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>
22 #include <linux/tcp.h>
23 #include <linux/mii.h>
25 #include <linux/kthread.h>
26 #include <linux/slab.h>
27 #include <linux/if_vlan.h>
28 #include <linux/netdevice.h>
29 #include <linux/netdev_features.h>
30 #include <linux/rcutree.h>
31 #include <linux/skbuff.h>
32 #include <linux/vmalloc.h>
34 #include <net/iucv/af_iucv.h>
35 #include <net/dsfield.h>
38 #include <asm/ebcdic.h>
39 #include <asm/chpid.h>
40 #include <asm/sysinfo.h>
43 #include <asm/ccwdev.h>
44 #include <asm/cpcmd.h>
46 #include "qeth_core.h"
48 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
49 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
51 [QETH_DBF_SETUP] = {"qeth_setup",
52 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
53 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
54 &debug_sprintf_view, NULL},
55 [QETH_DBF_CTRL] = {"qeth_control",
56 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
58 EXPORT_SYMBOL_GPL(qeth_dbf);
60 struct kmem_cache *qeth_core_header_cache;
61 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
62 static struct kmem_cache *qeth_qdio_outbuf_cache;
64 static struct device *qeth_core_root_dev;
65 static struct dentry *qeth_debugfs_root;
66 static struct lock_class_key qdio_out_skb_queue_key;
68 static void qeth_issue_next_read_cb(struct qeth_card *card,
69 struct qeth_cmd_buffer *iob,
70 unsigned int data_length);
71 static int qeth_qdio_establish(struct qeth_card *);
72 static void qeth_free_qdio_queues(struct qeth_card *card);
73 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
74 struct qeth_qdio_out_buffer *buf,
75 enum iucv_tx_notify notification);
76 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
79 static void qeth_close_dev_handler(struct work_struct *work)
81 struct qeth_card *card;
83 card = container_of(work, struct qeth_card, close_dev_work);
84 QETH_CARD_TEXT(card, 2, "cldevhdl");
85 ccwgroup_set_offline(card->gdev);
88 static const char *qeth_get_cardname(struct qeth_card *card)
90 if (IS_VM_NIC(card)) {
91 switch (card->info.type) {
92 case QETH_CARD_TYPE_OSD:
93 return " Virtual NIC QDIO";
94 case QETH_CARD_TYPE_IQD:
95 return " Virtual NIC Hiper";
96 case QETH_CARD_TYPE_OSM:
97 return " Virtual NIC QDIO - OSM";
98 case QETH_CARD_TYPE_OSX:
99 return " Virtual NIC QDIO - OSX";
104 switch (card->info.type) {
105 case QETH_CARD_TYPE_OSD:
106 return " OSD Express";
107 case QETH_CARD_TYPE_IQD:
108 return " HiperSockets";
109 case QETH_CARD_TYPE_OSN:
111 case QETH_CARD_TYPE_OSM:
113 case QETH_CARD_TYPE_OSX:
122 /* max length to be returned: 14 */
123 const char *qeth_get_cardname_short(struct qeth_card *card)
125 if (IS_VM_NIC(card)) {
126 switch (card->info.type) {
127 case QETH_CARD_TYPE_OSD:
128 return "Virt.NIC QDIO";
129 case QETH_CARD_TYPE_IQD:
130 return "Virt.NIC Hiper";
131 case QETH_CARD_TYPE_OSM:
132 return "Virt.NIC OSM";
133 case QETH_CARD_TYPE_OSX:
134 return "Virt.NIC OSX";
139 switch (card->info.type) {
140 case QETH_CARD_TYPE_OSD:
141 switch (card->info.link_type) {
142 case QETH_LINK_TYPE_FAST_ETH:
144 case QETH_LINK_TYPE_HSTR:
146 case QETH_LINK_TYPE_GBIT_ETH:
148 case QETH_LINK_TYPE_10GBIT_ETH:
150 case QETH_LINK_TYPE_25GBIT_ETH:
152 case QETH_LINK_TYPE_LANE_ETH100:
153 return "OSD_FE_LANE";
154 case QETH_LINK_TYPE_LANE_TR:
155 return "OSD_TR_LANE";
156 case QETH_LINK_TYPE_LANE_ETH1000:
157 return "OSD_GbE_LANE";
158 case QETH_LINK_TYPE_LANE:
159 return "OSD_ATM_LANE";
161 return "OSD_Express";
163 case QETH_CARD_TYPE_IQD:
164 return "HiperSockets";
165 case QETH_CARD_TYPE_OSN:
167 case QETH_CARD_TYPE_OSM:
169 case QETH_CARD_TYPE_OSX:
178 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
179 int clear_start_mask)
183 spin_lock_irqsave(&card->thread_mask_lock, flags);
184 card->thread_allowed_mask = threads;
185 if (clear_start_mask)
186 card->thread_start_mask &= threads;
187 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
188 wake_up(&card->wait_q);
190 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
192 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
197 spin_lock_irqsave(&card->thread_mask_lock, flags);
198 rc = (card->thread_running_mask & threads);
199 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
202 EXPORT_SYMBOL_GPL(qeth_threads_running);
204 static void qeth_clear_working_pool_list(struct qeth_card *card)
206 struct qeth_buffer_pool_entry *pool_entry, *tmp;
207 struct qeth_qdio_q *queue = card->qdio.in_q;
210 QETH_CARD_TEXT(card, 5, "clwrklst");
211 list_for_each_entry_safe(pool_entry, tmp,
212 &card->qdio.in_buf_pool.entry_list, list)
213 list_del(&pool_entry->list);
215 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
216 queue->bufs[i].pool_entry = NULL;
219 static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
223 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
224 if (entry->elements[i])
225 __free_page(entry->elements[i]);
231 static void qeth_free_buffer_pool(struct qeth_card *card)
233 struct qeth_buffer_pool_entry *entry, *tmp;
235 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
237 list_del(&entry->init_list);
238 qeth_free_pool_entry(entry);
242 static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
244 struct qeth_buffer_pool_entry *entry;
247 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
251 for (i = 0; i < pages; i++) {
252 entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
254 if (!entry->elements[i]) {
255 qeth_free_pool_entry(entry);
263 static int qeth_alloc_buffer_pool(struct qeth_card *card)
265 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
268 QETH_CARD_TEXT(card, 5, "alocpool");
269 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
270 struct qeth_buffer_pool_entry *entry;
272 entry = qeth_alloc_pool_entry(buf_elements);
274 qeth_free_buffer_pool(card);
278 list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
283 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
285 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
286 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
287 struct qeth_buffer_pool_entry *entry, *tmp;
288 int delta = count - pool->buf_count;
291 QETH_CARD_TEXT(card, 2, "realcbp");
293 /* Defer until queue is allocated: */
294 if (!card->qdio.in_q)
297 /* Remove entries from the pool: */
299 entry = list_first_entry(&pool->entry_list,
300 struct qeth_buffer_pool_entry,
302 list_del(&entry->init_list);
303 qeth_free_pool_entry(entry);
308 /* Allocate additional entries: */
310 entry = qeth_alloc_pool_entry(buf_elements);
312 list_for_each_entry_safe(entry, tmp, &entries,
314 list_del(&entry->init_list);
315 qeth_free_pool_entry(entry);
321 list_add(&entry->init_list, &entries);
326 list_splice(&entries, &pool->entry_list);
329 card->qdio.in_buf_pool.buf_count = count;
330 pool->buf_count = count;
333 EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
335 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
340 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
344 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
346 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
352 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
357 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
358 q->bufs[i].buffer = q->qdio_bufs[i];
360 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
364 static int qeth_cq_init(struct qeth_card *card)
368 if (card->options.cq == QETH_CQ_ENABLED) {
369 QETH_CARD_TEXT(card, 2, "cqinit");
370 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
371 QDIO_MAX_BUFFERS_PER_Q);
372 card->qdio.c_q->next_buf_to_init = 127;
373 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
374 card->qdio.no_in_queues - 1, 0,
377 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
386 static int qeth_alloc_cq(struct qeth_card *card)
390 if (card->options.cq == QETH_CQ_ENABLED) {
392 struct qdio_outbuf_state *outbuf_states;
394 QETH_CARD_TEXT(card, 2, "cqon");
395 card->qdio.c_q = qeth_alloc_qdio_queue();
396 if (!card->qdio.c_q) {
400 card->qdio.no_in_queues = 2;
401 card->qdio.out_bufstates =
402 kcalloc(card->qdio.no_out_queues *
403 QDIO_MAX_BUFFERS_PER_Q,
404 sizeof(struct qdio_outbuf_state),
406 outbuf_states = card->qdio.out_bufstates;
407 if (outbuf_states == NULL) {
411 for (i = 0; i < card->qdio.no_out_queues; ++i) {
412 card->qdio.out_qs[i]->bufstates = outbuf_states;
413 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
416 QETH_CARD_TEXT(card, 2, "nocq");
417 card->qdio.c_q = NULL;
418 card->qdio.no_in_queues = 1;
420 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
425 qeth_free_qdio_queue(card->qdio.c_q);
426 card->qdio.c_q = NULL;
428 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
432 static void qeth_free_cq(struct qeth_card *card)
434 if (card->qdio.c_q) {
435 --card->qdio.no_in_queues;
436 qeth_free_qdio_queue(card->qdio.c_q);
437 card->qdio.c_q = NULL;
439 kfree(card->qdio.out_bufstates);
440 card->qdio.out_bufstates = NULL;
443 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
446 enum iucv_tx_notify n;
450 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
456 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
457 TX_NOTIFY_UNREACHABLE;
460 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
461 TX_NOTIFY_GENERALERROR;
468 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
471 if (q->card->options.cq != QETH_CQ_ENABLED)
474 if (q->bufs[bidx]->next_pending != NULL) {
475 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
476 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
479 if (forced_cleanup ||
480 atomic_read(&c->state) == QETH_QDIO_BUF_EMPTY) {
481 struct qeth_qdio_out_buffer *f = c;
483 QETH_CARD_TEXT(f->q->card, 5, "fp");
484 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
485 /* release here to avoid interleaving between
486 outbound tasklet and inbound tasklet
487 regarding notifications and lifecycle */
488 qeth_tx_complete_buf(c, forced_cleanup, 0);
491 WARN_ON_ONCE(head->next_pending != f);
492 head->next_pending = c;
493 kmem_cache_free(qeth_qdio_outbuf_cache, f);
503 static void qeth_qdio_handle_aob(struct qeth_card *card,
504 unsigned long phys_aob_addr)
506 enum qeth_qdio_out_buffer_state new_state = QETH_QDIO_BUF_QAOB_OK;
508 struct qeth_qdio_out_buffer *buffer;
509 enum iucv_tx_notify notification;
512 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
513 QETH_CARD_TEXT(card, 5, "haob");
514 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
515 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
516 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
519 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
520 new_state = QETH_QDIO_BUF_QAOB_ERROR;
523 switch (atomic_xchg(&buffer->state, new_state)) {
524 case QETH_QDIO_BUF_PRIMED:
525 /* Faster than TX completion code, let it handle the async
529 case QETH_QDIO_BUF_PENDING:
530 /* TX completion code is active and will handle the async
534 case QETH_QDIO_BUF_NEED_QAOB:
535 /* TX completion code is already finished. */
536 notification = qeth_compute_cq_notification(aob->aorc, 1);
537 qeth_notify_skbs(buffer->q, buffer, notification);
539 /* Free dangling allocations. The attached skbs are handled by
540 * qeth_cleanup_handled_pending().
543 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
545 void *data = phys_to_virt(aob->sba[i]);
547 if (data && buffer->is_header[i])
548 kmem_cache_free(qeth_core_header_cache, data);
549 buffer->is_header[i] = 0;
552 atomic_set(&buffer->state, QETH_QDIO_BUF_EMPTY);
558 qdio_release_aob(aob);
561 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
564 ccw->cmd_code = cmd_code;
565 ccw->flags = flags | CCW_FLAG_SLI;
567 ccw->cda = (__u32) __pa(data);
570 static int __qeth_issue_next_read(struct qeth_card *card)
572 struct qeth_cmd_buffer *iob = card->read_cmd;
573 struct qeth_channel *channel = iob->channel;
574 struct ccw1 *ccw = __ccw_from_cmd(iob);
577 QETH_CARD_TEXT(card, 5, "issnxrd");
578 if (channel->state != CH_STATE_UP)
581 memset(iob->data, 0, iob->length);
582 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
583 iob->callback = qeth_issue_next_read_cb;
584 /* keep the cmd alive after completion: */
587 QETH_CARD_TEXT(card, 6, "noirqpnd");
588 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
590 channel->active_cmd = iob;
592 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
593 rc, CARD_DEVID(card));
594 qeth_unlock_channel(card, channel);
596 card->read_or_write_problem = 1;
597 qeth_schedule_recovery(card);
602 static int qeth_issue_next_read(struct qeth_card *card)
606 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
607 ret = __qeth_issue_next_read(card);
608 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
613 static void qeth_enqueue_cmd(struct qeth_card *card,
614 struct qeth_cmd_buffer *iob)
616 spin_lock_irq(&card->lock);
617 list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
618 spin_unlock_irq(&card->lock);
621 static void qeth_dequeue_cmd(struct qeth_card *card,
622 struct qeth_cmd_buffer *iob)
624 spin_lock_irq(&card->lock);
625 list_del(&iob->list_entry);
626 spin_unlock_irq(&card->lock);
629 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
632 complete(&iob->done);
634 EXPORT_SYMBOL_GPL(qeth_notify_cmd);
636 static void qeth_flush_local_addrs4(struct qeth_card *card)
638 struct qeth_local_addr *addr;
639 struct hlist_node *tmp;
642 spin_lock_irq(&card->local_addrs4_lock);
643 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
644 hash_del_rcu(&addr->hnode);
645 kfree_rcu(addr, rcu);
647 spin_unlock_irq(&card->local_addrs4_lock);
650 static void qeth_flush_local_addrs6(struct qeth_card *card)
652 struct qeth_local_addr *addr;
653 struct hlist_node *tmp;
656 spin_lock_irq(&card->local_addrs6_lock);
657 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
658 hash_del_rcu(&addr->hnode);
659 kfree_rcu(addr, rcu);
661 spin_unlock_irq(&card->local_addrs6_lock);
664 static void qeth_flush_local_addrs(struct qeth_card *card)
666 qeth_flush_local_addrs4(card);
667 qeth_flush_local_addrs6(card);
670 static void qeth_add_local_addrs4(struct qeth_card *card,
671 struct qeth_ipacmd_local_addrs4 *cmd)
675 if (cmd->addr_length !=
676 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
677 dev_err_ratelimited(&card->gdev->dev,
678 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
683 spin_lock(&card->local_addrs4_lock);
684 for (i = 0; i < cmd->count; i++) {
685 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
686 struct qeth_local_addr *addr;
687 bool duplicate = false;
689 hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
690 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
699 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
701 dev_err(&card->gdev->dev,
702 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
703 &cmd->addrs[i].addr);
707 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
708 hash_add_rcu(card->local_addrs4, &addr->hnode, key);
710 spin_unlock(&card->local_addrs4_lock);
713 static void qeth_add_local_addrs6(struct qeth_card *card,
714 struct qeth_ipacmd_local_addrs6 *cmd)
718 if (cmd->addr_length !=
719 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
720 dev_err_ratelimited(&card->gdev->dev,
721 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
726 spin_lock(&card->local_addrs6_lock);
727 for (i = 0; i < cmd->count; i++) {
728 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
729 struct qeth_local_addr *addr;
730 bool duplicate = false;
732 hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
733 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
742 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
744 dev_err(&card->gdev->dev,
745 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
746 &cmd->addrs[i].addr);
750 addr->addr = cmd->addrs[i].addr;
751 hash_add_rcu(card->local_addrs6, &addr->hnode, key);
753 spin_unlock(&card->local_addrs6_lock);
756 static void qeth_del_local_addrs4(struct qeth_card *card,
757 struct qeth_ipacmd_local_addrs4 *cmd)
761 if (cmd->addr_length !=
762 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
763 dev_err_ratelimited(&card->gdev->dev,
764 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
769 spin_lock(&card->local_addrs4_lock);
770 for (i = 0; i < cmd->count; i++) {
771 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
772 unsigned int key = ipv4_addr_hash(addr->addr);
773 struct qeth_local_addr *tmp;
775 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
776 if (tmp->addr.s6_addr32[3] == addr->addr) {
777 hash_del_rcu(&tmp->hnode);
783 spin_unlock(&card->local_addrs4_lock);
786 static void qeth_del_local_addrs6(struct qeth_card *card,
787 struct qeth_ipacmd_local_addrs6 *cmd)
791 if (cmd->addr_length !=
792 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
793 dev_err_ratelimited(&card->gdev->dev,
794 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
799 spin_lock(&card->local_addrs6_lock);
800 for (i = 0; i < cmd->count; i++) {
801 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
802 u32 key = ipv6_addr_hash(&addr->addr);
803 struct qeth_local_addr *tmp;
805 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
806 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
807 hash_del_rcu(&tmp->hnode);
813 spin_unlock(&card->local_addrs6_lock);
816 static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
819 struct qeth_local_addr *tmp;
820 bool is_local = false;
824 if (hash_empty(card->local_addrs4))
828 next_hop = qeth_next_hop_v4_rcu(skb, qeth_dst_check_rcu(skb, 4));
829 key = ipv4_addr_hash(next_hop);
831 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
832 if (tmp->addr.s6_addr32[3] == next_hop) {
842 static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
845 struct qeth_local_addr *tmp;
846 struct in6_addr *next_hop;
847 bool is_local = false;
850 if (hash_empty(card->local_addrs6))
854 next_hop = qeth_next_hop_v6_rcu(skb, qeth_dst_check_rcu(skb, 6));
855 key = ipv6_addr_hash(next_hop);
857 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
858 if (ipv6_addr_equal(&tmp->addr, next_hop)) {
868 static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
870 struct qeth_card *card = m->private;
871 struct qeth_local_addr *tmp;
875 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
876 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
877 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
878 seq_printf(m, "%pI6c\n", &tmp->addr);
884 DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
886 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
887 struct qeth_card *card)
889 const char *ipa_name;
890 int com = cmd->hdr.command;
892 ipa_name = qeth_get_ipa_cmd_name(com);
895 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
896 ipa_name, com, CARD_DEVID(card), rc,
897 qeth_get_ipa_msg(rc));
899 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
900 ipa_name, com, CARD_DEVID(card));
903 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
904 struct qeth_ipa_cmd *cmd)
906 QETH_CARD_TEXT(card, 5, "chkipad");
908 if (IS_IPA_REPLY(cmd)) {
909 if (cmd->hdr.command != IPA_CMD_SETCCID &&
910 cmd->hdr.command != IPA_CMD_DELCCID &&
911 cmd->hdr.command != IPA_CMD_MODCCID &&
912 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
913 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
917 /* handle unsolicited event: */
918 switch (cmd->hdr.command) {
919 case IPA_CMD_STOPLAN:
920 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
921 dev_err(&card->gdev->dev,
922 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
923 netdev_name(card->dev));
924 schedule_work(&card->close_dev_work);
926 dev_warn(&card->gdev->dev,
927 "The link for interface %s on CHPID 0x%X failed\n",
928 netdev_name(card->dev), card->info.chpid);
929 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
930 netif_carrier_off(card->dev);
933 case IPA_CMD_STARTLAN:
934 dev_info(&card->gdev->dev,
935 "The link for %s on CHPID 0x%X has been restored\n",
936 netdev_name(card->dev), card->info.chpid);
937 if (card->info.hwtrap)
938 card->info.hwtrap = 2;
939 qeth_schedule_recovery(card);
941 case IPA_CMD_SETBRIDGEPORT_IQD:
942 case IPA_CMD_SETBRIDGEPORT_OSA:
943 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
944 if (card->discipline->control_event_handler(card, cmd))
947 case IPA_CMD_MODCCID:
949 case IPA_CMD_REGISTER_LOCAL_ADDR:
950 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
951 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
952 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
953 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
955 QETH_CARD_TEXT(card, 3, "irla");
957 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
958 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
959 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
960 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
961 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
963 QETH_CARD_TEXT(card, 3, "urla");
966 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
971 static void qeth_clear_ipacmd_list(struct qeth_card *card)
973 struct qeth_cmd_buffer *iob;
976 QETH_CARD_TEXT(card, 4, "clipalst");
978 spin_lock_irqsave(&card->lock, flags);
979 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
980 qeth_notify_cmd(iob, -ECANCELED);
981 spin_unlock_irqrestore(&card->lock, flags);
984 static int qeth_check_idx_response(struct qeth_card *card,
985 unsigned char *buffer)
987 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
988 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
989 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
991 QETH_CARD_TEXT(card, 2, "ckidxres");
992 QETH_CARD_TEXT(card, 2, " idxterm");
993 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
994 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
995 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
996 dev_err(&card->gdev->dev,
997 "The device does not support the configured transport mode\n");
998 return -EPROTONOSUPPORT;
1005 void qeth_put_cmd(struct qeth_cmd_buffer *iob)
1007 if (refcount_dec_and_test(&iob->ref_count)) {
1012 EXPORT_SYMBOL_GPL(qeth_put_cmd);
1014 static void qeth_release_buffer_cb(struct qeth_card *card,
1015 struct qeth_cmd_buffer *iob,
1016 unsigned int data_length)
1021 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
1023 qeth_notify_cmd(iob, rc);
1027 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
1028 unsigned int length, unsigned int ccws,
1031 struct qeth_cmd_buffer *iob;
1033 if (length > QETH_BUFSIZE)
1036 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
1040 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
1041 GFP_KERNEL | GFP_DMA);
1047 init_completion(&iob->done);
1048 spin_lock_init(&iob->lock);
1049 refcount_set(&iob->ref_count, 1);
1050 iob->channel = channel;
1051 iob->timeout = timeout;
1052 iob->length = length;
1055 EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
1057 static void qeth_issue_next_read_cb(struct qeth_card *card,
1058 struct qeth_cmd_buffer *iob,
1059 unsigned int data_length)
1061 struct qeth_cmd_buffer *request = NULL;
1062 struct qeth_ipa_cmd *cmd = NULL;
1063 struct qeth_reply *reply = NULL;
1064 struct qeth_cmd_buffer *tmp;
1065 unsigned long flags;
1068 QETH_CARD_TEXT(card, 4, "sndctlcb");
1069 rc = qeth_check_idx_response(card, iob->data);
1074 qeth_schedule_recovery(card);
1077 qeth_clear_ipacmd_list(card);
1081 cmd = __ipa_reply(iob);
1083 cmd = qeth_check_ipa_data(card, cmd);
1086 if (IS_OSN(card) && card->osn_info.assist_cb &&
1087 cmd->hdr.command != IPA_CMD_STARTLAN) {
1088 card->osn_info.assist_cb(card->dev, cmd);
1093 /* match against pending cmd requests */
1094 spin_lock_irqsave(&card->lock, flags);
1095 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
1096 if (tmp->match && tmp->match(tmp, iob)) {
1098 /* take the object outside the lock */
1099 qeth_get_cmd(request);
1103 spin_unlock_irqrestore(&card->lock, flags);
1108 reply = &request->reply;
1109 if (!reply->callback) {
1114 spin_lock_irqsave(&request->lock, flags);
1116 /* Bail out when the requestor has already left: */
1119 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
1120 (unsigned long)iob);
1121 spin_unlock_irqrestore(&request->lock, flags);
1125 qeth_notify_cmd(request, rc);
1126 qeth_put_cmd(request);
1128 memcpy(&card->seqno.pdu_hdr_ack,
1129 QETH_PDU_HEADER_SEQ_NO(iob->data),
1130 QETH_SEQ_NO_LENGTH);
1131 __qeth_issue_next_read(card);
1136 static int qeth_set_thread_start_bit(struct qeth_card *card,
1137 unsigned long thread)
1139 unsigned long flags;
1142 spin_lock_irqsave(&card->thread_mask_lock, flags);
1143 if (!(card->thread_allowed_mask & thread))
1145 else if (card->thread_start_mask & thread)
1148 card->thread_start_mask |= thread;
1149 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1154 static void qeth_clear_thread_start_bit(struct qeth_card *card,
1155 unsigned long thread)
1157 unsigned long flags;
1159 spin_lock_irqsave(&card->thread_mask_lock, flags);
1160 card->thread_start_mask &= ~thread;
1161 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1162 wake_up(&card->wait_q);
1165 static void qeth_clear_thread_running_bit(struct qeth_card *card,
1166 unsigned long thread)
1168 unsigned long flags;
1170 spin_lock_irqsave(&card->thread_mask_lock, flags);
1171 card->thread_running_mask &= ~thread;
1172 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1173 wake_up_all(&card->wait_q);
1176 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1178 unsigned long flags;
1181 spin_lock_irqsave(&card->thread_mask_lock, flags);
1182 if (card->thread_start_mask & thread) {
1183 if ((card->thread_allowed_mask & thread) &&
1184 !(card->thread_running_mask & thread)) {
1186 card->thread_start_mask &= ~thread;
1187 card->thread_running_mask |= thread;
1191 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1195 static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1199 wait_event(card->wait_q,
1200 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1204 int qeth_schedule_recovery(struct qeth_card *card)
1208 QETH_CARD_TEXT(card, 2, "startrec");
1210 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1212 schedule_work(&card->kernel_thread_starter);
1217 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1223 sense = (char *) irb->ecw;
1224 cstat = irb->scsw.cmd.cstat;
1225 dstat = irb->scsw.cmd.dstat;
1227 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1228 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1229 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1230 QETH_CARD_TEXT(card, 2, "CGENCHK");
1231 dev_warn(&cdev->dev, "The qeth device driver "
1232 "failed to recover an error on the device\n");
1233 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1234 CCW_DEVID(cdev), dstat, cstat);
1235 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1240 if (dstat & DEV_STAT_UNIT_CHECK) {
1241 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1242 SENSE_RESETTING_EVENT_FLAG) {
1243 QETH_CARD_TEXT(card, 2, "REVIND");
1246 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1247 SENSE_COMMAND_REJECT_FLAG) {
1248 QETH_CARD_TEXT(card, 2, "CMDREJi");
1251 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1252 QETH_CARD_TEXT(card, 2, "AFFE");
1255 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1256 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1259 QETH_CARD_TEXT(card, 2, "DGENCHK");
1265 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
1271 switch (PTR_ERR(irb)) {
1273 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1275 QETH_CARD_TEXT(card, 2, "ckirberr");
1276 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1279 dev_warn(&cdev->dev, "A hardware operation timed out"
1280 " on the device\n");
1281 QETH_CARD_TEXT(card, 2, "ckirberr");
1282 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1285 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1286 PTR_ERR(irb), CCW_DEVID(cdev));
1287 QETH_CARD_TEXT(card, 2, "ckirberr");
1288 QETH_CARD_TEXT(card, 2, " rc???");
1289 return PTR_ERR(irb);
1293 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1298 struct qeth_cmd_buffer *iob = NULL;
1299 struct ccwgroup_device *gdev;
1300 struct qeth_channel *channel;
1301 struct qeth_card *card;
1303 /* while we hold the ccwdev lock, this stays valid: */
1304 gdev = dev_get_drvdata(&cdev->dev);
1305 card = dev_get_drvdata(&gdev->dev);
1307 QETH_CARD_TEXT(card, 5, "irq");
1309 if (card->read.ccwdev == cdev) {
1310 channel = &card->read;
1311 QETH_CARD_TEXT(card, 5, "read");
1312 } else if (card->write.ccwdev == cdev) {
1313 channel = &card->write;
1314 QETH_CARD_TEXT(card, 5, "write");
1316 channel = &card->data;
1317 QETH_CARD_TEXT(card, 5, "data");
1321 QETH_CARD_TEXT(card, 5, "irqunsol");
1322 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1323 QETH_CARD_TEXT(card, 5, "irqunexp");
1326 "Received IRQ with intparm %lx, expected %px\n",
1327 intparm, channel->active_cmd);
1328 if (channel->active_cmd)
1329 qeth_cancel_cmd(channel->active_cmd, -EIO);
1331 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1334 channel->active_cmd = NULL;
1335 qeth_unlock_channel(card, channel);
1337 rc = qeth_check_irb_error(card, cdev, irb);
1339 /* IO was terminated, free its resources. */
1341 qeth_cancel_cmd(iob, rc);
1345 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
1346 channel->state = CH_STATE_STOPPED;
1347 wake_up(&card->wait_q);
1350 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
1351 channel->state = CH_STATE_HALTED;
1352 wake_up(&card->wait_q);
1355 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1356 SCSW_FCTL_HALT_FUNC))) {
1357 qeth_cancel_cmd(iob, -ECANCELED);
1361 cstat = irb->scsw.cmd.cstat;
1362 dstat = irb->scsw.cmd.dstat;
1364 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1365 (dstat & DEV_STAT_UNIT_CHECK) ||
1367 if (irb->esw.esw0.erw.cons) {
1368 dev_warn(&channel->ccwdev->dev,
1369 "The qeth device driver failed to recover "
1370 "an error on the device\n");
1371 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1372 CCW_DEVID(channel->ccwdev), cstat,
1374 print_hex_dump(KERN_WARNING, "qeth: irb ",
1375 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1376 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1377 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1380 rc = qeth_get_problem(card, cdev, irb);
1382 card->read_or_write_problem = 1;
1384 qeth_cancel_cmd(iob, rc);
1385 qeth_clear_ipacmd_list(card);
1386 qeth_schedule_recovery(card);
1393 if (irb->scsw.cmd.count > iob->length) {
1394 qeth_cancel_cmd(iob, -EIO);
1398 iob->callback(card, iob,
1399 iob->length - irb->scsw.cmd.count);
1403 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1404 struct qeth_qdio_out_buffer *buf,
1405 enum iucv_tx_notify notification)
1407 struct sk_buff *skb;
1409 skb_queue_walk(&buf->skb_list, skb) {
1410 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1411 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1412 if (skb->sk && skb->sk->sk_family == PF_IUCV)
1413 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
1417 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
1420 struct qeth_qdio_out_q *queue = buf->q;
1421 struct sk_buff *skb;
1423 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1424 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR);
1427 if (buf->next_element_to_fill == 0)
1430 QETH_TXQ_STAT_INC(queue, bufs);
1431 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1433 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1435 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1436 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1439 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1440 unsigned int bytes = qdisc_pkt_len(skb);
1441 bool is_tso = skb_is_gso(skb);
1442 unsigned int packets;
1444 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1446 if (skb->ip_summed == CHECKSUM_PARTIAL)
1447 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1448 if (skb_is_nonlinear(skb))
1449 QETH_TXQ_STAT_INC(queue, skbs_sg);
1451 QETH_TXQ_STAT_INC(queue, skbs_tso);
1452 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1456 napi_consume_skb(skb, budget);
1460 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1461 struct qeth_qdio_out_buffer *buf,
1462 bool error, int budget)
1466 /* is PCI flag set on buffer? */
1467 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1468 atomic_dec(&queue->set_pci_flags_count);
1470 qeth_tx_complete_buf(buf, error, budget);
1472 for (i = 0; i < queue->max_elements; ++i) {
1473 void *data = phys_to_virt(buf->buffer->element[i].addr);
1475 if (data && buf->is_header[i])
1476 kmem_cache_free(qeth_core_header_cache, data);
1477 buf->is_header[i] = 0;
1480 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1481 buf->next_element_to_fill = 0;
1484 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1487 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1491 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1494 qeth_cleanup_handled_pending(q, j, 1);
1495 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1497 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1503 static void qeth_drain_output_queues(struct qeth_card *card)
1507 QETH_CARD_TEXT(card, 2, "clearqdbf");
1508 /* clear outbound buffers to free skbs */
1509 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1510 if (card->qdio.out_qs[i])
1511 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1515 static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1517 unsigned int max = single ? 1 : card->dev->num_tx_queues;
1519 if (card->qdio.no_out_queues == max)
1522 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1523 qeth_free_qdio_queues(card);
1525 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
1526 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1528 card->qdio.no_out_queues = max;
1531 static int qeth_update_from_chp_desc(struct qeth_card *card)
1533 struct ccw_device *ccwdev;
1534 struct channel_path_desc_fmt0 *chp_dsc;
1536 QETH_CARD_TEXT(card, 2, "chp_desc");
1538 ccwdev = card->data.ccwdev;
1539 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1543 card->info.func_level = 0x4100 + chp_dsc->desc;
1545 if (IS_OSD(card) || IS_OSX(card))
1546 /* CHPP field bit 6 == 1 -> single queue */
1547 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1550 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1551 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1555 static void qeth_init_qdio_info(struct qeth_card *card)
1557 QETH_CARD_TEXT(card, 4, "intqdinf");
1558 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1559 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1560 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1563 card->qdio.no_in_queues = 1;
1564 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1566 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1568 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1569 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1570 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1571 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1574 static void qeth_set_initial_options(struct qeth_card *card)
1576 card->options.route4.type = NO_ROUTER;
1577 card->options.route6.type = NO_ROUTER;
1578 card->options.isolation = ISOLATION_MODE_NONE;
1579 card->options.cq = QETH_CQ_DISABLED;
1580 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1583 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1585 unsigned long flags;
1588 spin_lock_irqsave(&card->thread_mask_lock, flags);
1589 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1590 (u8) card->thread_start_mask,
1591 (u8) card->thread_allowed_mask,
1592 (u8) card->thread_running_mask);
1593 rc = (card->thread_start_mask & thread);
1594 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1598 static int qeth_do_reset(void *data);
1599 static void qeth_start_kernel_thread(struct work_struct *work)
1601 struct task_struct *ts;
1602 struct qeth_card *card = container_of(work, struct qeth_card,
1603 kernel_thread_starter);
1604 QETH_CARD_TEXT(card, 2, "strthrd");
1606 if (card->read.state != CH_STATE_UP &&
1607 card->write.state != CH_STATE_UP)
1609 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1610 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
1612 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1613 qeth_clear_thread_running_bit(card,
1614 QETH_RECOVER_THREAD);
1619 static void qeth_buffer_reclaim_work(struct work_struct *);
1620 static void qeth_setup_card(struct qeth_card *card)
1622 QETH_CARD_TEXT(card, 2, "setupcrd");
1624 card->info.type = CARD_RDEV(card)->id.driver_info;
1625 card->state = CARD_STATE_DOWN;
1626 spin_lock_init(&card->lock);
1627 spin_lock_init(&card->thread_mask_lock);
1628 mutex_init(&card->conf_mutex);
1629 mutex_init(&card->discipline_mutex);
1630 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1631 INIT_LIST_HEAD(&card->cmd_waiter_list);
1632 init_waitqueue_head(&card->wait_q);
1633 qeth_set_initial_options(card);
1634 /* IP address takeover */
1635 INIT_LIST_HEAD(&card->ipato.entries);
1636 qeth_init_qdio_info(card);
1637 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1638 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1639 hash_init(card->rx_mode_addrs);
1640 hash_init(card->local_addrs4);
1641 hash_init(card->local_addrs6);
1642 spin_lock_init(&card->local_addrs4_lock);
1643 spin_lock_init(&card->local_addrs6_lock);
1646 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1648 struct qeth_card *card = container_of(slr, struct qeth_card,
1649 qeth_service_level);
1650 if (card->info.mcl_level[0])
1651 seq_printf(m, "qeth: %s firmware level %s\n",
1652 CARD_BUS_ID(card), card->info.mcl_level);
1655 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1657 struct qeth_card *card;
1659 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1660 card = kzalloc(sizeof(*card), GFP_KERNEL);
1663 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1666 dev_set_drvdata(&gdev->dev, card);
1667 CARD_RDEV(card) = gdev->cdev[0];
1668 CARD_WDEV(card) = gdev->cdev[1];
1669 CARD_DDEV(card) = gdev->cdev[2];
1671 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1672 dev_name(&gdev->dev));
1673 if (!card->event_wq)
1676 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1677 if (!card->read_cmd)
1680 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1682 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1683 &qeth_debugfs_local_addr_fops);
1685 card->qeth_service_level.seq_print = qeth_core_sl_print;
1686 register_service_level(&card->qeth_service_level);
1690 destroy_workqueue(card->event_wq);
1692 dev_set_drvdata(&gdev->dev, NULL);
1698 static int qeth_clear_channel(struct qeth_card *card,
1699 struct qeth_channel *channel)
1703 QETH_CARD_TEXT(card, 3, "clearch");
1704 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1705 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1706 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1710 rc = wait_event_interruptible_timeout(card->wait_q,
1711 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1712 if (rc == -ERESTARTSYS)
1714 if (channel->state != CH_STATE_STOPPED)
1716 channel->state = CH_STATE_DOWN;
1720 static int qeth_halt_channel(struct qeth_card *card,
1721 struct qeth_channel *channel)
1725 QETH_CARD_TEXT(card, 3, "haltch");
1726 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1727 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1728 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1732 rc = wait_event_interruptible_timeout(card->wait_q,
1733 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1734 if (rc == -ERESTARTSYS)
1736 if (channel->state != CH_STATE_HALTED)
1741 static int qeth_stop_channel(struct qeth_channel *channel)
1743 struct ccw_device *cdev = channel->ccwdev;
1746 rc = ccw_device_set_offline(cdev);
1748 spin_lock_irq(get_ccwdev_lock(cdev));
1749 if (channel->active_cmd) {
1750 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1751 channel->active_cmd);
1752 channel->active_cmd = NULL;
1754 cdev->handler = NULL;
1755 spin_unlock_irq(get_ccwdev_lock(cdev));
1760 static int qeth_start_channel(struct qeth_channel *channel)
1762 struct ccw_device *cdev = channel->ccwdev;
1765 channel->state = CH_STATE_DOWN;
1766 atomic_set(&channel->irq_pending, 0);
1768 spin_lock_irq(get_ccwdev_lock(cdev));
1769 cdev->handler = qeth_irq;
1770 spin_unlock_irq(get_ccwdev_lock(cdev));
1772 rc = ccw_device_set_online(cdev);
1779 spin_lock_irq(get_ccwdev_lock(cdev));
1780 cdev->handler = NULL;
1781 spin_unlock_irq(get_ccwdev_lock(cdev));
1785 static int qeth_halt_channels(struct qeth_card *card)
1787 int rc1 = 0, rc2 = 0, rc3 = 0;
1789 QETH_CARD_TEXT(card, 3, "haltchs");
1790 rc1 = qeth_halt_channel(card, &card->read);
1791 rc2 = qeth_halt_channel(card, &card->write);
1792 rc3 = qeth_halt_channel(card, &card->data);
1800 static int qeth_clear_channels(struct qeth_card *card)
1802 int rc1 = 0, rc2 = 0, rc3 = 0;
1804 QETH_CARD_TEXT(card, 3, "clearchs");
1805 rc1 = qeth_clear_channel(card, &card->read);
1806 rc2 = qeth_clear_channel(card, &card->write);
1807 rc3 = qeth_clear_channel(card, &card->data);
1815 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1819 QETH_CARD_TEXT(card, 3, "clhacrd");
1822 rc = qeth_halt_channels(card);
1825 return qeth_clear_channels(card);
1828 static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1832 QETH_CARD_TEXT(card, 3, "qdioclr");
1833 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1834 QETH_QDIO_CLEANING)) {
1835 case QETH_QDIO_ESTABLISHED:
1837 rc = qdio_shutdown(CARD_DDEV(card),
1838 QDIO_FLAG_CLEANUP_USING_HALT);
1840 rc = qdio_shutdown(CARD_DDEV(card),
1841 QDIO_FLAG_CLEANUP_USING_CLEAR);
1843 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1844 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1846 case QETH_QDIO_CLEANING:
1851 rc = qeth_clear_halt_card(card, use_halt);
1853 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1857 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1859 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1860 struct diag26c_vnic_resp *response = NULL;
1861 struct diag26c_vnic_req *request = NULL;
1862 struct ccw_dev_id id;
1866 QETH_CARD_TEXT(card, 2, "vmlayer");
1868 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1872 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1873 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1874 if (!request || !response) {
1879 ccw_device_get_id(CARD_RDEV(card), &id);
1880 request->resp_buf_len = sizeof(*response);
1881 request->resp_version = DIAG26C_VERSION6_VM65918;
1882 request->req_format = DIAG26C_VNIC_INFO;
1884 memcpy(&request->sys_name, userid, 8);
1885 request->devno = id.devno;
1887 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1888 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1889 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1892 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1894 if (request->resp_buf_len < sizeof(*response) ||
1895 response->version != request->resp_version) {
1900 if (response->protocol == VNIC_INFO_PROT_L2)
1901 disc = QETH_DISCIPLINE_LAYER2;
1902 else if (response->protocol == VNIC_INFO_PROT_L3)
1903 disc = QETH_DISCIPLINE_LAYER3;
1909 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1913 /* Determine whether the device requires a specific layer discipline */
1914 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1916 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1918 if (IS_OSM(card) || IS_OSN(card))
1919 disc = QETH_DISCIPLINE_LAYER2;
1920 else if (IS_VM_NIC(card))
1921 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1922 qeth_vm_detect_layer(card);
1925 case QETH_DISCIPLINE_LAYER2:
1926 QETH_CARD_TEXT(card, 3, "force l2");
1928 case QETH_DISCIPLINE_LAYER3:
1929 QETH_CARD_TEXT(card, 3, "force l3");
1932 QETH_CARD_TEXT(card, 3, "force no");
1938 static void qeth_set_blkt_defaults(struct qeth_card *card)
1940 QETH_CARD_TEXT(card, 2, "cfgblkt");
1942 if (card->info.use_v1_blkt) {
1943 card->info.blkt.time_total = 0;
1944 card->info.blkt.inter_packet = 0;
1945 card->info.blkt.inter_packet_jumbo = 0;
1947 card->info.blkt.time_total = 250;
1948 card->info.blkt.inter_packet = 5;
1949 card->info.blkt.inter_packet_jumbo = 15;
1953 static void qeth_idx_init(struct qeth_card *card)
1955 memset(&card->seqno, 0, sizeof(card->seqno));
1957 card->token.issuer_rm_w = 0x00010103UL;
1958 card->token.cm_filter_w = 0x00010108UL;
1959 card->token.cm_connection_w = 0x0001010aUL;
1960 card->token.ulp_filter_w = 0x0001010bUL;
1961 card->token.ulp_connection_w = 0x0001010dUL;
1963 switch (card->info.type) {
1964 case QETH_CARD_TYPE_IQD:
1965 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1967 case QETH_CARD_TYPE_OSD:
1968 case QETH_CARD_TYPE_OSN:
1969 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1976 static void qeth_idx_finalize_cmd(struct qeth_card *card,
1977 struct qeth_cmd_buffer *iob)
1979 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1980 QETH_SEQ_NO_LENGTH);
1981 if (iob->channel == &card->write)
1982 card->seqno.trans_hdr++;
1985 static int qeth_peer_func_level(int level)
1987 if ((level & 0xff) == 8)
1988 return (level & 0xff) + 0x400;
1989 if (((level >> 8) & 3) == 1)
1990 return (level & 0xff) + 0x200;
1994 static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1995 struct qeth_cmd_buffer *iob)
1997 qeth_idx_finalize_cmd(card, iob);
1999 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2000 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2001 card->seqno.pdu_hdr++;
2002 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2003 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2005 iob->callback = qeth_release_buffer_cb;
2008 static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
2009 struct qeth_cmd_buffer *reply)
2011 /* MPC cmds are issued strictly in sequence. */
2012 return !IS_IPA(reply->data);
2015 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
2017 unsigned int data_length)
2019 struct qeth_cmd_buffer *iob;
2021 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
2025 memcpy(iob->data, data, data_length);
2026 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
2028 iob->finalize = qeth_mpc_finalize_cmd;
2029 iob->match = qeth_mpc_match_reply;
2034 * qeth_send_control_data() - send control command to the card
2035 * @card: qeth_card structure pointer
2036 * @iob: qeth_cmd_buffer pointer
2037 * @reply_cb: callback function pointer
2038 * @cb_card: pointer to the qeth_card structure
2039 * @cb_reply: pointer to the qeth_reply structure
2040 * @cb_cmd: pointer to the original iob for non-IPA
2041 * commands, or to the qeth_ipa_cmd structure
2042 * for the IPA commands.
2043 * @reply_param: private pointer passed to the callback
2045 * Callback function gets called one or more times, with cb_cmd
2046 * pointing to the response returned by the hardware. Callback
2047 * function must return
2048 * > 0 if more reply blocks are expected,
2049 * 0 if the last or only reply block is received, and
2051 * Callback function can get the value of the reply_param pointer from the
2052 * field 'param' of the structure qeth_reply.
2055 static int qeth_send_control_data(struct qeth_card *card,
2056 struct qeth_cmd_buffer *iob,
2057 int (*reply_cb)(struct qeth_card *cb_card,
2058 struct qeth_reply *cb_reply,
2059 unsigned long cb_cmd),
2062 struct qeth_channel *channel = iob->channel;
2063 struct qeth_reply *reply = &iob->reply;
2064 long timeout = iob->timeout;
2067 QETH_CARD_TEXT(card, 2, "sendctl");
2069 reply->callback = reply_cb;
2070 reply->param = reply_param;
2072 timeout = wait_event_interruptible_timeout(card->wait_q,
2073 qeth_trylock_channel(channel),
2077 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2081 iob->finalize(card, iob);
2082 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
2084 qeth_enqueue_cmd(card, iob);
2086 /* This pairs with iob->callback, and keeps the iob alive after IO: */
2089 QETH_CARD_TEXT(card, 6, "noirqpnd");
2090 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
2091 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
2092 (addr_t) iob, 0, 0, timeout);
2094 channel->active_cmd = iob;
2095 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
2097 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
2098 CARD_DEVID(card), rc);
2099 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2100 qeth_dequeue_cmd(card, iob);
2102 qeth_unlock_channel(card, channel);
2106 timeout = wait_for_completion_interruptible_timeout(&iob->done,
2109 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2111 qeth_dequeue_cmd(card, iob);
2114 /* Wait until the callback for a late reply has completed: */
2115 spin_lock_irq(&iob->lock);
2117 /* Zap any callback that's still pending: */
2119 spin_unlock_irq(&iob->lock);
2130 struct qeth_node_desc {
2131 struct node_descriptor nd1;
2132 struct node_descriptor nd2;
2133 struct node_descriptor nd3;
2136 static void qeth_read_conf_data_cb(struct qeth_card *card,
2137 struct qeth_cmd_buffer *iob,
2138 unsigned int data_length)
2140 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
2144 QETH_CARD_TEXT(card, 2, "cfgunit");
2146 if (data_length < sizeof(*nd)) {
2151 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2152 nd->nd1.plant[1] == _ascebc['M'];
2153 tag = (u8 *)&nd->nd1.tag;
2154 card->info.chpid = tag[0];
2155 card->info.unit_addr2 = tag[1];
2157 tag = (u8 *)&nd->nd2.tag;
2158 card->info.cula = tag[1];
2160 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2161 nd->nd3.model[1] == 0xF0 &&
2162 nd->nd3.model[2] >= 0xF1 &&
2163 nd->nd3.model[2] <= 0xF4;
2166 qeth_notify_cmd(iob, rc);
2170 static int qeth_read_conf_data(struct qeth_card *card)
2172 struct qeth_channel *channel = &card->data;
2173 struct qeth_cmd_buffer *iob;
2176 /* scan for RCD command in extended SenseID data */
2177 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2178 if (!ciw || ciw->cmd == 0)
2180 if (ciw->count < sizeof(struct qeth_node_desc))
2183 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2187 iob->callback = qeth_read_conf_data_cb;
2188 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2191 return qeth_send_control_data(card, iob, NULL, NULL);
2194 static int qeth_idx_check_activate_response(struct qeth_card *card,
2195 struct qeth_channel *channel,
2196 struct qeth_cmd_buffer *iob)
2200 rc = qeth_check_idx_response(card, iob->data);
2204 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2207 /* negative reply: */
2208 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2209 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2211 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2212 case QETH_IDX_ACT_ERR_EXCL:
2213 dev_err(&channel->ccwdev->dev,
2214 "The adapter is used exclusively by another host\n");
2216 case QETH_IDX_ACT_ERR_AUTH:
2217 case QETH_IDX_ACT_ERR_AUTH_USER:
2218 dev_err(&channel->ccwdev->dev,
2219 "Setting the device online failed because of insufficient authorization\n");
2222 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2223 CCW_DEVID(channel->ccwdev));
2228 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
2229 struct qeth_cmd_buffer *iob,
2230 unsigned int data_length)
2232 struct qeth_channel *channel = iob->channel;
2236 QETH_CARD_TEXT(card, 2, "idxrdcb");
2238 rc = qeth_idx_check_activate_response(card, channel, iob);
2242 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2243 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2244 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2245 CCW_DEVID(channel->ccwdev),
2246 card->info.func_level, peer_level);
2251 memcpy(&card->token.issuer_rm_r,
2252 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2253 QETH_MPC_TOKEN_LENGTH);
2254 memcpy(&card->info.mcl_level[0],
2255 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2258 qeth_notify_cmd(iob, rc);
2262 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
2263 struct qeth_cmd_buffer *iob,
2264 unsigned int data_length)
2266 struct qeth_channel *channel = iob->channel;
2270 QETH_CARD_TEXT(card, 2, "idxwrcb");
2272 rc = qeth_idx_check_activate_response(card, channel, iob);
2276 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2277 if ((peer_level & ~0x0100) !=
2278 qeth_peer_func_level(card->info.func_level)) {
2279 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2280 CCW_DEVID(channel->ccwdev),
2281 card->info.func_level, peer_level);
2286 qeth_notify_cmd(iob, rc);
2290 static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2291 struct qeth_cmd_buffer *iob)
2293 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2294 u8 port = ((u8)card->dev->dev_port) | 0x80;
2295 struct ccw1 *ccw = __ccw_from_cmd(iob);
2297 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2299 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2300 iob->finalize = qeth_idx_finalize_cmd;
2302 port |= QETH_IDX_ACT_INVAL_FRAME;
2303 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2304 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2305 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2306 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2307 &card->info.func_level, 2);
2308 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2309 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2312 static int qeth_idx_activate_read_channel(struct qeth_card *card)
2314 struct qeth_channel *channel = &card->read;
2315 struct qeth_cmd_buffer *iob;
2318 QETH_CARD_TEXT(card, 2, "idxread");
2320 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2324 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2325 qeth_idx_setup_activate_cmd(card, iob);
2326 iob->callback = qeth_idx_activate_read_channel_cb;
2328 rc = qeth_send_control_data(card, iob, NULL, NULL);
2332 channel->state = CH_STATE_UP;
2336 static int qeth_idx_activate_write_channel(struct qeth_card *card)
2338 struct qeth_channel *channel = &card->write;
2339 struct qeth_cmd_buffer *iob;
2342 QETH_CARD_TEXT(card, 2, "idxwrite");
2344 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2348 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2349 qeth_idx_setup_activate_cmd(card, iob);
2350 iob->callback = qeth_idx_activate_write_channel_cb;
2352 rc = qeth_send_control_data(card, iob, NULL, NULL);
2356 channel->state = CH_STATE_UP;
2360 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2363 struct qeth_cmd_buffer *iob;
2365 QETH_CARD_TEXT(card, 2, "cmenblcb");
2367 iob = (struct qeth_cmd_buffer *) data;
2368 memcpy(&card->token.cm_filter_r,
2369 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2370 QETH_MPC_TOKEN_LENGTH);
2374 static int qeth_cm_enable(struct qeth_card *card)
2376 struct qeth_cmd_buffer *iob;
2378 QETH_CARD_TEXT(card, 2, "cmenable");
2380 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2384 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2385 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2386 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2387 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2389 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2392 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2395 struct qeth_cmd_buffer *iob;
2397 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2399 iob = (struct qeth_cmd_buffer *) data;
2400 memcpy(&card->token.cm_connection_r,
2401 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2402 QETH_MPC_TOKEN_LENGTH);
2406 static int qeth_cm_setup(struct qeth_card *card)
2408 struct qeth_cmd_buffer *iob;
2410 QETH_CARD_TEXT(card, 2, "cmsetup");
2412 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2416 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2417 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2418 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2419 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2420 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2421 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2422 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2425 static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2427 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2428 link_type == QETH_LINK_TYPE_HSTR) {
2429 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2436 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2438 struct net_device *dev = card->dev;
2439 unsigned int new_mtu;
2442 /* IQD needs accurate max MTU to set up its RX buffers: */
2445 /* tolerate quirky HW: */
2446 max_mtu = ETH_MAX_MTU;
2451 /* move any device with default MTU to new max MTU: */
2452 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2454 /* adjust RX buffer size to new max MTU: */
2455 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2456 if (dev->max_mtu && dev->max_mtu != max_mtu)
2457 qeth_free_qdio_queues(card);
2461 /* default MTUs for first setup: */
2462 else if (IS_LAYER2(card))
2463 new_mtu = ETH_DATA_LEN;
2465 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2468 dev->max_mtu = max_mtu;
2469 dev->mtu = min(new_mtu, max_mtu);
2474 static int qeth_get_mtu_outof_framesize(int framesize)
2476 switch (framesize) {
2490 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2493 __u16 mtu, framesize;
2495 struct qeth_cmd_buffer *iob;
2498 QETH_CARD_TEXT(card, 2, "ulpenacb");
2500 iob = (struct qeth_cmd_buffer *) data;
2501 memcpy(&card->token.ulp_filter_r,
2502 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2503 QETH_MPC_TOKEN_LENGTH);
2505 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2506 mtu = qeth_get_mtu_outof_framesize(framesize);
2508 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2510 *(u16 *)reply->param = mtu;
2512 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2513 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2515 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2516 if (!qeth_is_supported_link_type(card, link_type))
2517 return -EPROTONOSUPPORT;
2520 card->info.link_type = link_type;
2521 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2525 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2528 return QETH_PROT_OSN2;
2529 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2532 static int qeth_ulp_enable(struct qeth_card *card)
2534 u8 prot_type = qeth_mpc_select_prot_type(card);
2535 struct qeth_cmd_buffer *iob;
2539 QETH_CARD_TEXT(card, 2, "ulpenabl");
2541 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2545 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2546 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2547 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2548 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2549 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2550 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2551 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2554 return qeth_update_max_mtu(card, max_mtu);
2557 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2560 struct qeth_cmd_buffer *iob;
2562 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2564 iob = (struct qeth_cmd_buffer *) data;
2565 memcpy(&card->token.ulp_connection_r,
2566 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2567 QETH_MPC_TOKEN_LENGTH);
2568 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2570 QETH_CARD_TEXT(card, 2, "olmlimit");
2571 dev_err(&card->gdev->dev, "A connection could not be "
2572 "established because of an OLM limit\n");
2578 static int qeth_ulp_setup(struct qeth_card *card)
2581 struct qeth_cmd_buffer *iob;
2583 QETH_CARD_TEXT(card, 2, "ulpsetup");
2585 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2589 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2590 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2591 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2592 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2593 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2594 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2596 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
2597 temp = (card->info.cula << 8) + card->info.unit_addr2;
2598 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2599 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2602 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2604 struct qeth_qdio_out_buffer *newbuf;
2606 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2610 newbuf->buffer = q->qdio_bufs[bidx];
2611 skb_queue_head_init(&newbuf->skb_list);
2612 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2614 newbuf->next_pending = q->bufs[bidx];
2615 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2616 q->bufs[bidx] = newbuf;
2620 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2625 qeth_drain_output_queue(q, true);
2626 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2630 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2632 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2637 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2644 static void qeth_tx_completion_timer(struct timer_list *timer)
2646 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2648 napi_schedule(&queue->napi);
2649 QETH_TXQ_STAT_INC(queue, completion_timer);
2652 static int qeth_alloc_qdio_queues(struct qeth_card *card)
2656 QETH_CARD_TEXT(card, 2, "allcqdbf");
2658 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2659 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2662 QETH_CARD_TEXT(card, 2, "inq");
2663 card->qdio.in_q = qeth_alloc_qdio_queue();
2664 if (!card->qdio.in_q)
2667 /* inbound buffer pool */
2668 if (qeth_alloc_buffer_pool(card))
2672 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2673 struct qeth_qdio_out_q *queue;
2675 queue = qeth_alloc_output_queue();
2678 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2679 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2680 card->qdio.out_qs[i] = queue;
2682 queue->queue_no = i;
2683 spin_lock_init(&queue->lock);
2684 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2685 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2686 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2687 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
2689 /* give outbound qeth_qdio_buffers their qdio_buffers */
2690 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2691 WARN_ON(queue->bufs[j]);
2692 if (qeth_init_qdio_out_buf(queue, j))
2693 goto out_freeoutqbufs;
2698 if (qeth_alloc_cq(card))
2706 kmem_cache_free(qeth_qdio_outbuf_cache,
2707 card->qdio.out_qs[i]->bufs[j]);
2708 card->qdio.out_qs[i]->bufs[j] = NULL;
2712 qeth_free_output_queue(card->qdio.out_qs[--i]);
2713 card->qdio.out_qs[i] = NULL;
2715 qeth_free_buffer_pool(card);
2717 qeth_free_qdio_queue(card->qdio.in_q);
2718 card->qdio.in_q = NULL;
2720 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2724 static void qeth_free_qdio_queues(struct qeth_card *card)
2728 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2729 QETH_QDIO_UNINITIALIZED)
2733 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2734 if (card->qdio.in_q->bufs[j].rx_skb)
2735 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2737 qeth_free_qdio_queue(card->qdio.in_q);
2738 card->qdio.in_q = NULL;
2739 /* inbound buffer pool */
2740 qeth_free_buffer_pool(card);
2741 /* free outbound qdio_qs */
2742 for (i = 0; i < card->qdio.no_out_queues; i++) {
2743 qeth_free_output_queue(card->qdio.out_qs[i]);
2744 card->qdio.out_qs[i] = NULL;
2748 static void qeth_fill_qib_parms(struct qeth_card *card,
2749 struct qeth_qib_parms *parms)
2751 struct qeth_qdio_out_q *queue;
2754 parms->pcit_magic[0] = 'P';
2755 parms->pcit_magic[1] = 'C';
2756 parms->pcit_magic[2] = 'I';
2757 parms->pcit_magic[3] = 'T';
2758 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2759 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2760 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2761 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2763 parms->blkt_magic[0] = 'B';
2764 parms->blkt_magic[1] = 'L';
2765 parms->blkt_magic[2] = 'K';
2766 parms->blkt_magic[3] = 'T';
2767 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2768 parms->blkt_total = card->info.blkt.time_total;
2769 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2770 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
2772 /* Prio-queueing implicitly uses the default priorities: */
2773 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2776 parms->pque_magic[0] = 'P';
2777 parms->pque_magic[1] = 'Q';
2778 parms->pque_magic[2] = 'U';
2779 parms->pque_magic[3] = 'E';
2780 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2781 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2782 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2784 qeth_for_each_output_queue(card, queue, i)
2785 parms->pque_priority[i] = queue->priority;
2788 static int qeth_qdio_activate(struct qeth_card *card)
2790 QETH_CARD_TEXT(card, 3, "qdioact");
2791 return qdio_activate(CARD_DDEV(card));
2794 static int qeth_dm_act(struct qeth_card *card)
2796 struct qeth_cmd_buffer *iob;
2798 QETH_CARD_TEXT(card, 2, "dmact");
2800 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2804 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2805 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2806 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2807 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2808 return qeth_send_control_data(card, iob, NULL, NULL);
2811 static int qeth_mpc_initialize(struct qeth_card *card)
2815 QETH_CARD_TEXT(card, 2, "mpcinit");
2817 rc = qeth_issue_next_read(card);
2819 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2822 rc = qeth_cm_enable(card);
2824 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2827 rc = qeth_cm_setup(card);
2829 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2832 rc = qeth_ulp_enable(card);
2834 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2837 rc = qeth_ulp_setup(card);
2839 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2842 rc = qeth_alloc_qdio_queues(card);
2844 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2847 rc = qeth_qdio_establish(card);
2849 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2850 qeth_free_qdio_queues(card);
2853 rc = qeth_qdio_activate(card);
2855 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2858 rc = qeth_dm_act(card);
2860 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2867 static void qeth_print_status_message(struct qeth_card *card)
2869 switch (card->info.type) {
2870 case QETH_CARD_TYPE_OSD:
2871 case QETH_CARD_TYPE_OSM:
2872 case QETH_CARD_TYPE_OSX:
2873 /* VM will use a non-zero first character
2874 * to indicate a HiperSockets like reporting
2875 * of the level OSA sets the first character to zero
2877 if (!card->info.mcl_level[0]) {
2878 sprintf(card->info.mcl_level, "%02x%02x",
2879 card->info.mcl_level[2],
2880 card->info.mcl_level[3]);
2884 case QETH_CARD_TYPE_IQD:
2885 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2886 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2887 card->info.mcl_level[0]];
2888 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2889 card->info.mcl_level[1]];
2890 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2891 card->info.mcl_level[2]];
2892 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2893 card->info.mcl_level[3]];
2894 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2898 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2900 dev_info(&card->gdev->dev,
2901 "Device is a%s card%s%s%s\nwith link type %s.\n",
2902 qeth_get_cardname(card),
2903 (card->info.mcl_level[0]) ? " (level: " : "",
2904 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2905 (card->info.mcl_level[0]) ? ")" : "",
2906 qeth_get_cardname_short(card));
2909 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2911 struct qeth_buffer_pool_entry *entry;
2913 QETH_CARD_TEXT(card, 5, "inwrklst");
2915 list_for_each_entry(entry,
2916 &card->qdio.init_pool.entry_list, init_list) {
2917 qeth_put_buffer_pool_entry(card, entry);
2921 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2922 struct qeth_card *card)
2924 struct qeth_buffer_pool_entry *entry;
2927 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2930 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
2932 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2933 if (page_count(entry->elements[i]) > 1) {
2939 list_del_init(&entry->list);
2944 /* no free buffer in pool so take first one and swap pages */
2945 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2946 struct qeth_buffer_pool_entry, list);
2947 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2948 if (page_count(entry->elements[i]) > 1) {
2949 struct page *page = dev_alloc_page();
2954 __free_page(entry->elements[i]);
2955 entry->elements[i] = page;
2956 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2959 list_del_init(&entry->list);
2963 static int qeth_init_input_buffer(struct qeth_card *card,
2964 struct qeth_qdio_buffer *buf)
2966 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
2969 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2970 buf->rx_skb = netdev_alloc_skb(card->dev,
2972 sizeof(struct ipv6hdr));
2978 pool_entry = qeth_find_free_buffer_pool_entry(card);
2982 buf->pool_entry = pool_entry;
2986 * since the buffer is accessed only from the input_tasklet
2987 * there shouldn't be a need to synchronize; also, since we use
2988 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2991 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2992 buf->buffer->element[i].length = PAGE_SIZE;
2993 buf->buffer->element[i].addr =
2994 page_to_phys(pool_entry->elements[i]);
2995 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2996 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2998 buf->buffer->element[i].eflags = 0;
2999 buf->buffer->element[i].sflags = 0;
3004 static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
3005 struct qeth_qdio_out_q *queue)
3007 if (!IS_IQD(card) ||
3008 qeth_iqd_is_mcast_queue(card, queue) ||
3009 card->options.cq == QETH_CQ_ENABLED ||
3010 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
3013 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
3016 static int qeth_init_qdio_queues(struct qeth_card *card)
3018 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
3022 QETH_CARD_TEXT(card, 2, "initqdqs");
3025 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
3026 memset(&card->rx, 0, sizeof(struct qeth_rx));
3028 qeth_initialize_working_pool_list(card);
3029 /*give only as many buffers to hardware as we have buffer pool entries*/
3030 for (i = 0; i < rx_bufs; i++) {
3031 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
3036 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
3037 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, rx_bufs);
3039 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
3044 rc = qeth_cq_init(card);
3049 /* outbound queue */
3050 for (i = 0; i < card->qdio.no_out_queues; ++i) {
3051 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
3053 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
3054 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3055 queue->next_buf_to_fill = 0;
3057 queue->prev_hdr = NULL;
3058 queue->coalesced_frames = 0;
3059 queue->bulk_start = 0;
3060 queue->bulk_count = 0;
3061 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
3062 atomic_set(&queue->used_buffers, 0);
3063 atomic_set(&queue->set_pci_flags_count, 0);
3064 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
3069 static void qeth_ipa_finalize_cmd(struct qeth_card *card,
3070 struct qeth_cmd_buffer *iob)
3072 qeth_mpc_finalize_cmd(card, iob);
3074 /* override with IPA-specific values: */
3075 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
3078 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3080 bool (*match)(struct qeth_cmd_buffer *iob,
3081 struct qeth_cmd_buffer *reply))
3083 u8 prot_type = qeth_mpc_select_prot_type(card);
3084 u16 total_length = iob->length;
3086 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
3088 iob->finalize = qeth_ipa_finalize_cmd;
3091 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3092 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
3093 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
3094 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
3095 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
3096 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3097 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3098 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
3100 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
3102 static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
3103 struct qeth_cmd_buffer *reply)
3105 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
3107 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
3110 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
3111 enum qeth_ipa_cmds cmd_code,
3112 enum qeth_prot_versions prot,
3113 unsigned int data_length)
3115 struct qeth_cmd_buffer *iob;
3116 struct qeth_ipacmd_hdr *hdr;
3118 data_length += offsetof(struct qeth_ipa_cmd, data);
3119 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3124 qeth_prepare_ipa_cmd(card, iob, data_length, qeth_ipa_match_reply);
3126 hdr = &__ipa_cmd(iob)->hdr;
3127 hdr->command = cmd_code;
3128 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3129 /* hdr->seqno is set by qeth_send_control_data() */
3130 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
3131 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3132 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3133 hdr->param_count = 1;
3134 hdr->prot_version = prot;
3137 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3139 static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3140 struct qeth_reply *reply, unsigned long data)
3142 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3144 return (cmd->hdr.return_code) ? -EIO : 0;
3148 * qeth_send_ipa_cmd() - send an IPA command
3150 * See qeth_send_control_data() for explanation of the arguments.
3153 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3154 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3160 QETH_CARD_TEXT(card, 4, "sendipa");
3162 if (card->read_or_write_problem) {
3167 if (reply_cb == NULL)
3168 reply_cb = qeth_send_ipa_cmd_cb;
3169 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
3171 qeth_clear_ipacmd_list(card);
3172 qeth_schedule_recovery(card);
3176 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3178 static int qeth_send_startlan_cb(struct qeth_card *card,
3179 struct qeth_reply *reply, unsigned long data)
3181 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3183 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3186 return (cmd->hdr.return_code) ? -EIO : 0;
3189 static int qeth_send_startlan(struct qeth_card *card)
3191 struct qeth_cmd_buffer *iob;
3193 QETH_CARD_TEXT(card, 2, "strtlan");
3195 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
3198 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
3201 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3203 if (!cmd->hdr.return_code)
3204 cmd->hdr.return_code =
3205 cmd->data.setadapterparms.hdr.return_code;
3206 return cmd->hdr.return_code;
3209 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3210 struct qeth_reply *reply, unsigned long data)
3212 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3213 struct qeth_query_cmds_supp *query_cmd;
3215 QETH_CARD_TEXT(card, 3, "quyadpcb");
3216 if (qeth_setadpparms_inspect_rc(cmd))
3219 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3220 if (query_cmd->lan_type & 0x7f) {
3221 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3222 return -EPROTONOSUPPORT;
3224 card->info.link_type = query_cmd->lan_type;
3225 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
3228 card->options.adp.supported = query_cmd->supported_cmds;
3232 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3233 enum qeth_ipa_setadp_cmd adp_cmd,
3234 unsigned int data_length)
3236 struct qeth_ipacmd_setadpparms_hdr *hdr;
3237 struct qeth_cmd_buffer *iob;
3239 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3241 offsetof(struct qeth_ipacmd_setadpparms,
3246 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3247 hdr->cmdlength = sizeof(*hdr) + data_length;
3248 hdr->command_code = adp_cmd;
3249 hdr->used_total = 1;
3254 static int qeth_query_setadapterparms(struct qeth_card *card)
3257 struct qeth_cmd_buffer *iob;
3259 QETH_CARD_TEXT(card, 3, "queryadp");
3260 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3261 SETADP_DATA_SIZEOF(query_cmds_supp));
3264 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3268 static int qeth_query_ipassists_cb(struct qeth_card *card,
3269 struct qeth_reply *reply, unsigned long data)
3271 struct qeth_ipa_cmd *cmd;
3273 QETH_CARD_TEXT(card, 2, "qipasscb");
3275 cmd = (struct qeth_ipa_cmd *) data;
3277 switch (cmd->hdr.return_code) {
3278 case IPA_RC_SUCCESS:
3280 case IPA_RC_NOTSUPP:
3281 case IPA_RC_L2_UNSUPPORTED_CMD:
3282 QETH_CARD_TEXT(card, 2, "ipaunsup");
3283 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3284 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
3287 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3288 CARD_DEVID(card), cmd->hdr.return_code);
3292 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3293 card->options.ipa4 = cmd->hdr.assists;
3294 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3295 card->options.ipa6 = cmd->hdr.assists;
3297 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3302 static int qeth_query_ipassists(struct qeth_card *card,
3303 enum qeth_prot_versions prot)
3306 struct qeth_cmd_buffer *iob;
3308 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
3309 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
3312 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3316 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3317 struct qeth_reply *reply, unsigned long data)
3319 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3320 struct qeth_query_switch_attributes *attrs;
3321 struct qeth_switch_info *sw_info;
3323 QETH_CARD_TEXT(card, 2, "qswiatcb");
3324 if (qeth_setadpparms_inspect_rc(cmd))
3327 sw_info = (struct qeth_switch_info *)reply->param;
3328 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3329 sw_info->capabilities = attrs->capabilities;
3330 sw_info->settings = attrs->settings;
3331 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3336 int qeth_query_switch_attributes(struct qeth_card *card,
3337 struct qeth_switch_info *sw_info)
3339 struct qeth_cmd_buffer *iob;
3341 QETH_CARD_TEXT(card, 2, "qswiattr");
3342 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3344 if (!netif_carrier_ok(card->dev))
3346 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
3349 return qeth_send_ipa_cmd(card, iob,
3350 qeth_query_switch_attributes_cb, sw_info);
3353 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3354 enum qeth_diags_cmds sub_cmd,
3355 unsigned int data_length)
3357 struct qeth_ipacmd_diagass *cmd;
3358 struct qeth_cmd_buffer *iob;
3360 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3361 DIAG_HDR_LEN + data_length);
3365 cmd = &__ipa_cmd(iob)->data.diagass;
3366 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3367 cmd->subcmd = sub_cmd;
3370 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3372 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3373 struct qeth_reply *reply, unsigned long data)
3375 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3376 u16 rc = cmd->hdr.return_code;
3379 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3383 card->info.diagass_support = cmd->data.diagass.ext;
3387 static int qeth_query_setdiagass(struct qeth_card *card)
3389 struct qeth_cmd_buffer *iob;
3391 QETH_CARD_TEXT(card, 2, "qdiagass");
3392 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3395 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3398 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3400 unsigned long info = get_zeroed_page(GFP_KERNEL);
3401 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3402 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3403 struct ccw_dev_id ccwid;
3406 tid->chpid = card->info.chpid;
3407 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3408 tid->ssid = ccwid.ssid;
3409 tid->devno = ccwid.devno;
3412 level = stsi(NULL, 0, 0, 0);
3413 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3414 tid->lparnr = info222->lpar_number;
3415 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3416 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3417 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3422 static int qeth_hw_trap_cb(struct qeth_card *card,
3423 struct qeth_reply *reply, unsigned long data)
3425 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3426 u16 rc = cmd->hdr.return_code;
3429 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3435 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3437 struct qeth_cmd_buffer *iob;
3438 struct qeth_ipa_cmd *cmd;
3440 QETH_CARD_TEXT(card, 2, "diagtrap");
3441 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3444 cmd = __ipa_cmd(iob);
3445 cmd->data.diagass.type = 1;
3446 cmd->data.diagass.action = action;
3448 case QETH_DIAGS_TRAP_ARM:
3449 cmd->data.diagass.options = 0x0003;
3450 cmd->data.diagass.ext = 0x00010000 +
3451 sizeof(struct qeth_trap_id);
3452 qeth_get_trap_id(card,
3453 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3455 case QETH_DIAGS_TRAP_DISARM:
3456 cmd->data.diagass.options = 0x0001;
3458 case QETH_DIAGS_TRAP_CAPTURE:
3461 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3464 static int qeth_check_qdio_errors(struct qeth_card *card,
3465 struct qdio_buffer *buf,
3466 unsigned int qdio_error,
3467 const char *dbftext)
3470 QETH_CARD_TEXT(card, 2, dbftext);
3471 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3472 buf->element[15].sflags);
3473 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3474 buf->element[14].sflags);
3475 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3476 if ((buf->element[15].sflags) == 0x12) {
3477 QETH_CARD_STAT_INC(card, rx_fifo_errors);
3485 static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3488 struct qeth_qdio_q *queue = card->qdio.in_q;
3489 struct list_head *lh;
3494 /* only requeue at a certain threshold to avoid SIGAs */
3495 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3496 for (i = queue->next_buf_to_init;
3497 i < queue->next_buf_to_init + count; ++i) {
3498 if (qeth_init_input_buffer(card,
3499 &queue->bufs[QDIO_BUFNR(i)])) {
3506 if (newcount < count) {
3507 /* we are in memory shortage so we switch back to
3508 traditional skb allocation and drop packages */
3509 atomic_set(&card->force_alloc_skb, 3);
3512 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3517 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3519 if (i == card->qdio.in_buf_pool.buf_count) {
3520 QETH_CARD_TEXT(card, 2, "qsarbw");
3521 schedule_delayed_work(
3522 &card->buffer_reclaim_work,
3523 QETH_RECLAIM_WORK_TIME);
3528 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3529 queue->next_buf_to_init, count);
3531 QETH_CARD_TEXT(card, 2, "qinberr");
3533 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3541 static void qeth_buffer_reclaim_work(struct work_struct *work)
3543 struct qeth_card *card = container_of(to_delayed_work(work),
3545 buffer_reclaim_work);
3548 napi_schedule(&card->napi);
3549 /* kick-start the NAPI softirq: */
3553 static void qeth_handle_send_error(struct qeth_card *card,
3554 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3556 int sbalf15 = buffer->buffer->element[15].sflags;
3558 QETH_CARD_TEXT(card, 6, "hdsnderr");
3559 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3564 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3567 QETH_CARD_TEXT(card, 1, "lnkfail");
3568 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3569 (u16)qdio_err, (u8)sbalf15);
3573 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3574 * @queue: queue to check for packing buffer
3576 * Returns number of buffers that were prepared for flush.
3578 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3580 struct qeth_qdio_out_buffer *buffer;
3582 buffer = queue->bufs[queue->next_buf_to_fill];
3583 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3584 (buffer->next_element_to_fill > 0)) {
3585 /* it's a packing buffer */
3586 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3587 queue->next_buf_to_fill =
3588 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3595 * Switched to packing state if the number of used buffers on a queue
3596 * reaches a certain limit.
3598 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3600 if (!queue->do_pack) {
3601 if (atomic_read(&queue->used_buffers)
3602 >= QETH_HIGH_WATERMARK_PACK){
3603 /* switch non-PACKING -> PACKING */
3604 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3605 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3612 * Switches from packing to non-packing mode. If there is a packing
3613 * buffer on the queue this buffer will be prepared to be flushed.
3614 * In that case 1 is returned to inform the caller. If no buffer
3615 * has to be flushed, zero is returned.
3617 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3619 if (queue->do_pack) {
3620 if (atomic_read(&queue->used_buffers)
3621 <= QETH_LOW_WATERMARK_PACK) {
3622 /* switch PACKING -> non-PACKING */
3623 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3624 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3626 return qeth_prep_flush_pack_buffer(queue);
3632 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3635 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
3636 unsigned int qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3637 struct qeth_card *card = queue->card;
3641 for (i = index; i < index + count; ++i) {
3642 unsigned int bidx = QDIO_BUFNR(i);
3643 struct sk_buff *skb;
3645 buf = queue->bufs[bidx];
3646 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3647 SBAL_EFLAGS_LAST_ENTRY;
3648 queue->coalesced_frames += buf->frames;
3650 if (queue->bufstates)
3651 queue->bufstates[bidx].user = buf;
3654 skb_queue_walk(&buf->skb_list, skb)
3655 skb_tx_timestamp(skb);
3659 if (!IS_IQD(card)) {
3660 if (!queue->do_pack) {
3661 if ((atomic_read(&queue->used_buffers) >=
3662 (QETH_HIGH_WATERMARK_PACK -
3663 QETH_WATERMARK_PACK_FUZZ)) &&
3664 !atomic_read(&queue->set_pci_flags_count)) {
3665 /* it's likely that we'll go to packing
3667 atomic_inc(&queue->set_pci_flags_count);
3668 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3671 if (!atomic_read(&queue->set_pci_flags_count)) {
3673 * there's no outstanding PCI any more, so we
3674 * have to request a PCI to be sure the the PCI
3675 * will wake at some time in the future then we
3676 * can flush packed buffers that might still be
3677 * hanging around, which can happen if no
3678 * further send was requested by the stack
3680 atomic_inc(&queue->set_pci_flags_count);
3681 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3685 if (atomic_read(&queue->set_pci_flags_count))
3686 qdio_flags |= QDIO_FLAG_PCI_OUT;
3689 QETH_TXQ_STAT_INC(queue, doorbell);
3690 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3691 queue->queue_no, index, count);
3693 /* Fake the TX completion interrupt: */
3695 unsigned int frames = READ_ONCE(queue->max_coalesced_frames);
3696 unsigned int usecs = READ_ONCE(queue->coalesce_usecs);
3698 if (frames && queue->coalesced_frames >= frames) {
3699 napi_schedule(&queue->napi);
3700 queue->coalesced_frames = 0;
3701 QETH_TXQ_STAT_INC(queue, coal_frames);
3703 qeth_tx_arm_timer(queue, usecs);
3708 /* ignore temporary SIGA errors without busy condition */
3711 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3712 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3713 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3714 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3715 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3717 /* this must not happen under normal circumstances. if it
3718 * happens something is really wrong -> recover */
3719 qeth_schedule_recovery(queue->card);
3724 static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3726 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
3728 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
3729 queue->prev_hdr = NULL;
3730 queue->bulk_count = 0;
3733 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3736 * check if weed have to switch to non-packing mode or if
3737 * we have to get a pci flag out on the queue
3739 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3740 !atomic_read(&queue->set_pci_flags_count)) {
3741 unsigned int index, flush_cnt;
3744 spin_lock(&queue->lock);
3746 index = queue->next_buf_to_fill;
3747 q_was_packing = queue->do_pack;
3749 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3750 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3751 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3754 qeth_flush_buffers(queue, index, flush_cnt);
3756 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3759 spin_unlock(&queue->lock);
3763 static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
3765 struct qeth_card *card = (struct qeth_card *)card_ptr;
3767 napi_schedule_irqoff(&card->napi);
3770 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3774 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3778 if (card->options.cq == cq) {
3783 qeth_free_qdio_queues(card);
3784 card->options.cq = cq;
3791 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3793 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3794 unsigned int queue, int first_element,
3797 struct qeth_qdio_q *cq = card->qdio.c_q;
3801 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3802 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3803 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3806 netif_tx_stop_all_queues(card->dev);
3807 qeth_schedule_recovery(card);
3811 for (i = first_element; i < first_element + count; ++i) {
3812 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3815 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3816 buffer->element[e].addr) {
3817 unsigned long phys_aob_addr = buffer->element[e].addr;
3819 qeth_qdio_handle_aob(card, phys_aob_addr);
3822 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3824 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3825 card->qdio.c_q->next_buf_to_init,
3828 dev_warn(&card->gdev->dev,
3829 "QDIO reported an error, rc=%i\n", rc);
3830 QETH_CARD_TEXT(card, 2, "qcqherr");
3833 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
3836 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3837 unsigned int qdio_err, int queue,
3838 int first_elem, int count,
3839 unsigned long card_ptr)
3841 struct qeth_card *card = (struct qeth_card *)card_ptr;
3843 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3844 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3847 qeth_schedule_recovery(card);
3850 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3851 unsigned int qdio_error, int __queue,
3852 int first_element, int count,
3853 unsigned long card_ptr)
3855 struct qeth_card *card = (struct qeth_card *) card_ptr;
3856 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3857 struct net_device *dev = card->dev;
3858 struct netdev_queue *txq;
3861 QETH_CARD_TEXT(card, 6, "qdouhdl");
3862 if (qdio_error & QDIO_ERROR_FATAL) {
3863 QETH_CARD_TEXT(card, 2, "achkcond");
3864 netif_tx_stop_all_queues(dev);
3865 qeth_schedule_recovery(card);
3869 for (i = first_element; i < (first_element + count); ++i) {
3870 struct qeth_qdio_out_buffer *buf = queue->bufs[QDIO_BUFNR(i)];
3872 qeth_handle_send_error(card, buf, qdio_error);
3873 qeth_clear_output_buffer(queue, buf, qdio_error, 0);
3876 atomic_sub(count, &queue->used_buffers);
3877 qeth_check_outbound_queue(queue);
3879 txq = netdev_get_tx_queue(dev, __queue);
3880 /* xmit may have observed the full-condition, but not yet stopped the
3881 * txq. In which case the code below won't trigger. So before returning,
3882 * xmit will re-check the txq's fill level and wake it up if needed.
3884 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3885 netif_tx_wake_queue(txq);
3889 * Note: Function assumes that we have 4 outbound queues.
3891 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3893 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3896 switch (card->qdio.do_prio_queueing) {
3897 case QETH_PRIO_Q_ING_TOS:
3898 case QETH_PRIO_Q_ING_PREC:
3899 switch (qeth_get_ip_version(skb)) {
3901 tos = ipv4_get_dsfield(ip_hdr(skb));
3904 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3907 return card->qdio.default_out_queue;
3909 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3910 return ~tos >> 6 & 3;
3911 if (tos & IPTOS_MINCOST)
3913 if (tos & IPTOS_RELIABILITY)
3915 if (tos & IPTOS_THROUGHPUT)
3917 if (tos & IPTOS_LOWDELAY)
3920 case QETH_PRIO_Q_ING_SKB:
3921 if (skb->priority > 5)
3923 return ~skb->priority >> 1 & 3;
3924 case QETH_PRIO_Q_ING_VLAN:
3925 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3926 return ~ntohs(veth->h_vlan_TCI) >>
3927 (VLAN_PRIO_SHIFT + 1) & 3;
3929 case QETH_PRIO_Q_ING_FIXED:
3930 return card->qdio.default_out_queue;
3934 return card->qdio.default_out_queue;
3936 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3939 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3942 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3943 * fragmented part of the SKB. Returns zero for linear SKB.
3945 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3947 int cnt, elements = 0;
3949 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3950 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3952 elements += qeth_get_elements_for_range(
3953 (addr_t)skb_frag_address(frag),
3954 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3960 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3961 * to transmit an skb.
3962 * @skb: the skb to operate on.
3963 * @data_offset: skip this part of the skb's linear data
3965 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3966 * skb's data (both its linear part and paged fragments).
3968 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3970 unsigned int elements = qeth_get_elements_for_frags(skb);
3971 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3972 addr_t start = (addr_t)skb->data + data_offset;
3975 elements += qeth_get_elements_for_range(start, end);
3978 EXPORT_SYMBOL_GPL(qeth_count_elements);
3980 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3984 * qeth_add_hw_header() - add a HW header to an skb.
3985 * @skb: skb that the HW header should be added to.
3986 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3987 * it contains a valid pointer to a qeth_hdr.
3988 * @hdr_len: length of the HW header.
3989 * @proto_len: length of protocol headers that need to be in same page as the
3992 * Returns the pushed length. If the header can't be pushed on
3993 * (eg. because it would cross a page boundary), it is allocated from
3994 * the cache instead and 0 is returned.
3995 * The number of needed buffer elements is returned in @elements.
3996 * Error to create the hdr is indicated by returning with < 0.
3998 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3999 struct sk_buff *skb, struct qeth_hdr **hdr,
4000 unsigned int hdr_len, unsigned int proto_len,
4001 unsigned int *elements)
4003 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
4004 const unsigned int contiguous = proto_len ? proto_len : 1;
4005 const unsigned int max_elements = queue->max_elements;
4006 unsigned int __elements;
4012 start = (addr_t)skb->data - hdr_len;
4013 end = (addr_t)skb->data;
4015 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
4016 /* Push HW header into same page as first protocol header. */
4018 /* ... but TSO always needs a separate element for headers: */
4019 if (skb_is_gso(skb))
4020 __elements = 1 + qeth_count_elements(skb, proto_len);
4022 __elements = qeth_count_elements(skb, 0);
4023 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
4024 /* Push HW header into preceding page, flush with skb->data. */
4026 __elements = 1 + qeth_count_elements(skb, 0);
4028 /* Use header cache, copy protocol headers up. */
4030 __elements = 1 + qeth_count_elements(skb, proto_len);
4033 /* Compress skb to fit into one IO buffer: */
4034 if (__elements > max_elements) {
4035 if (!skb_is_nonlinear(skb)) {
4036 /* Drop it, no easy way of shrinking it further. */
4037 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
4038 max_elements, __elements, skb->len);
4042 rc = skb_linearize(skb);
4044 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
4048 QETH_TXQ_STAT_INC(queue, skbs_linearized);
4049 /* Linearization changed the layout, re-evaluate: */
4053 *elements = __elements;
4054 /* Add the header: */
4056 *hdr = skb_push(skb, hdr_len);
4060 /* Fall back to cache element with known-good alignment: */
4061 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
4063 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
4066 /* Copy protocol headers behind HW header: */
4067 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
4071 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
4072 struct sk_buff *curr_skb,
4073 struct qeth_hdr *curr_hdr)
4075 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
4076 struct qeth_hdr *prev_hdr = queue->prev_hdr;
4081 /* All packets must have the same target: */
4082 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
4083 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
4085 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
4086 eth_hdr(curr_skb)->h_dest) &&
4087 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
4090 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
4091 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
4095 * qeth_fill_buffer() - map skb into an output buffer
4096 * @buf: buffer to transport the skb
4097 * @skb: skb to map into the buffer
4098 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4099 * from qeth_core_header_cache.
4100 * @offset: when mapping the skb, start at skb->data + offset
4101 * @hd_len: if > 0, build a dedicated header element of this size
4103 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
4104 struct sk_buff *skb, struct qeth_hdr *hdr,
4105 unsigned int offset, unsigned int hd_len)
4107 struct qdio_buffer *buffer = buf->buffer;
4108 int element = buf->next_element_to_fill;
4109 int length = skb_headlen(skb) - offset;
4110 char *data = skb->data + offset;
4111 unsigned int elem_length, cnt;
4112 bool is_first_elem = true;
4114 __skb_queue_tail(&buf->skb_list, skb);
4116 /* build dedicated element for HW Header */
4118 is_first_elem = false;
4120 buffer->element[element].addr = virt_to_phys(hdr);
4121 buffer->element[element].length = hd_len;
4122 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4124 /* HW header is allocated from cache: */
4125 if ((void *)hdr != skb->data)
4126 buf->is_header[element] = 1;
4127 /* HW header was pushed and is contiguous with linear part: */
4128 else if (length > 0 && !PAGE_ALIGNED(data) &&
4129 (data == (char *)hdr + hd_len))
4130 buffer->element[element].eflags |=
4131 SBAL_EFLAGS_CONTIGUOUS;
4136 /* map linear part into buffer element(s) */
4137 while (length > 0) {
4138 elem_length = min_t(unsigned int, length,
4139 PAGE_SIZE - offset_in_page(data));
4141 buffer->element[element].addr = virt_to_phys(data);
4142 buffer->element[element].length = elem_length;
4143 length -= elem_length;
4144 if (is_first_elem) {
4145 is_first_elem = false;
4146 if (length || skb_is_nonlinear(skb))
4147 /* skb needs additional elements */
4148 buffer->element[element].eflags =
4149 SBAL_EFLAGS_FIRST_FRAG;
4151 buffer->element[element].eflags = 0;
4153 buffer->element[element].eflags =
4154 SBAL_EFLAGS_MIDDLE_FRAG;
4157 data += elem_length;
4161 /* map page frags into buffer element(s) */
4162 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4163 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4165 data = skb_frag_address(frag);
4166 length = skb_frag_size(frag);
4167 while (length > 0) {
4168 elem_length = min_t(unsigned int, length,
4169 PAGE_SIZE - offset_in_page(data));
4171 buffer->element[element].addr = virt_to_phys(data);
4172 buffer->element[element].length = elem_length;
4173 buffer->element[element].eflags =
4174 SBAL_EFLAGS_MIDDLE_FRAG;
4176 length -= elem_length;
4177 data += elem_length;
4182 if (buffer->element[element - 1].eflags)
4183 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4184 buf->next_element_to_fill = element;
4188 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4189 struct sk_buff *skb, unsigned int elements,
4190 struct qeth_hdr *hdr, unsigned int offset,
4191 unsigned int hd_len)
4193 unsigned int bytes = qdisc_pkt_len(skb);
4194 struct qeth_qdio_out_buffer *buffer;
4195 unsigned int next_element;
4196 struct netdev_queue *txq;
4197 bool stopped = false;
4200 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
4201 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4203 /* Just a sanity check, the wake/stop logic should ensure that we always
4204 * get a free buffer.
4206 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4209 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4212 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4213 if (buffer->next_element_to_fill > 0) {
4214 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4215 queue->bulk_count++;
4218 if (queue->bulk_count >= queue->bulk_max)
4222 qeth_flush_queue(queue);
4224 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4225 queue->bulk_count)];
4227 /* Sanity-check again: */
4228 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4232 if (buffer->next_element_to_fill == 0 &&
4233 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4234 /* If a TX completion happens right _here_ and misses to wake
4235 * the txq, then our re-check below will catch the race.
4237 QETH_TXQ_STAT_INC(queue, stopped);
4238 netif_tx_stop_queue(txq);
4242 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4243 buffer->bytes += bytes;
4244 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4245 queue->prev_hdr = hdr;
4247 flush = __netdev_tx_sent_queue(txq, bytes,
4248 !stopped && netdev_xmit_more());
4250 if (flush || next_element >= queue->max_elements) {
4251 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4252 queue->bulk_count++;
4254 if (queue->bulk_count >= queue->bulk_max)
4258 qeth_flush_queue(queue);
4261 if (stopped && !qeth_out_queue_is_full(queue))
4262 netif_tx_start_queue(txq);
4266 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4267 struct sk_buff *skb, struct qeth_hdr *hdr,
4268 unsigned int offset, unsigned int hd_len,
4269 int elements_needed)
4271 unsigned int start_index = queue->next_buf_to_fill;
4272 struct qeth_qdio_out_buffer *buffer;
4273 unsigned int next_element;
4274 struct netdev_queue *txq;
4275 bool stopped = false;
4276 int flush_count = 0;
4280 buffer = queue->bufs[queue->next_buf_to_fill];
4282 /* Just a sanity check, the wake/stop logic should ensure that we always
4283 * get a free buffer.
4285 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4288 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4290 /* check if we need to switch packing state of this queue */
4291 qeth_switch_to_packing_if_needed(queue);
4292 if (queue->do_pack) {
4294 /* does packet fit in current buffer? */
4295 if (buffer->next_element_to_fill + elements_needed >
4296 queue->max_elements) {
4297 /* ... no -> set state PRIMED */
4298 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4300 queue->next_buf_to_fill =
4301 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4302 buffer = queue->bufs[queue->next_buf_to_fill];
4304 /* We stepped forward, so sanity-check again: */
4305 if (atomic_read(&buffer->state) !=
4306 QETH_QDIO_BUF_EMPTY) {
4307 qeth_flush_buffers(queue, start_index,
4315 if (buffer->next_element_to_fill == 0 &&
4316 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4317 /* If a TX completion happens right _here_ and misses to wake
4318 * the txq, then our re-check below will catch the race.
4320 QETH_TXQ_STAT_INC(queue, stopped);
4321 netif_tx_stop_queue(txq);
4325 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4326 buffer->bytes += qdisc_pkt_len(skb);
4327 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4330 QETH_TXQ_STAT_INC(queue, skbs_pack);
4331 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4333 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4334 queue->next_buf_to_fill =
4335 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4339 qeth_flush_buffers(queue, start_index, flush_count);
4343 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4345 if (stopped && !qeth_out_queue_is_full(queue))
4346 netif_tx_start_queue(txq);
4349 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4351 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4352 unsigned int payload_len, struct sk_buff *skb,
4353 unsigned int proto_len)
4355 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4357 ext->hdr_tot_len = sizeof(*ext);
4358 ext->imb_hdr_no = 1;
4360 ext->hdr_version = 1;
4362 ext->payload_len = payload_len;
4363 ext->mss = skb_shinfo(skb)->gso_size;
4364 ext->dg_hdr_len = proto_len;
4367 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4368 struct qeth_qdio_out_q *queue, int ipv,
4369 void (*fill_header)(struct qeth_qdio_out_q *queue,
4370 struct qeth_hdr *hdr, struct sk_buff *skb,
4371 int ipv, unsigned int data_len))
4373 unsigned int proto_len, hw_hdr_len;
4374 unsigned int frame_len = skb->len;
4375 bool is_tso = skb_is_gso(skb);
4376 unsigned int data_offset = 0;
4377 struct qeth_hdr *hdr = NULL;
4378 unsigned int hd_len = 0;
4379 unsigned int elements;
4383 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4384 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4386 hw_hdr_len = sizeof(struct qeth_hdr);
4387 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4390 rc = skb_cow_head(skb, hw_hdr_len);
4394 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4398 if (is_tso || !push_len) {
4399 /* HW header needs its own buffer element. */
4400 hd_len = hw_hdr_len + proto_len;
4401 data_offset = push_len + proto_len;
4403 memset(hdr, 0, hw_hdr_len);
4404 fill_header(queue, hdr, skb, ipv, frame_len);
4406 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4407 frame_len - proto_len, skb, proto_len);
4410 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4413 /* TODO: drop skb_orphan() once TX completion is fast enough */
4415 spin_lock(&queue->lock);
4416 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4418 spin_unlock(&queue->lock);
4421 if (rc && !push_len)
4422 kmem_cache_free(qeth_core_header_cache, hdr);
4426 EXPORT_SYMBOL_GPL(qeth_xmit);
4428 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4429 struct qeth_reply *reply, unsigned long data)
4431 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4432 struct qeth_ipacmd_setadpparms *setparms;
4434 QETH_CARD_TEXT(card, 4, "prmadpcb");
4436 setparms = &(cmd->data.setadapterparms);
4437 if (qeth_setadpparms_inspect_rc(cmd)) {
4438 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4439 setparms->data.mode = SET_PROMISC_MODE_OFF;
4441 card->info.promisc_mode = setparms->data.mode;
4442 return (cmd->hdr.return_code) ? -EIO : 0;
4445 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4447 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4448 SET_PROMISC_MODE_OFF;
4449 struct qeth_cmd_buffer *iob;
4450 struct qeth_ipa_cmd *cmd;
4452 QETH_CARD_TEXT(card, 4, "setprom");
4453 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4455 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4456 SETADP_DATA_SIZEOF(mode));
4459 cmd = __ipa_cmd(iob);
4460 cmd->data.setadapterparms.data.mode = mode;
4461 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4463 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4465 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4466 struct qeth_reply *reply, unsigned long data)
4468 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4469 struct qeth_ipacmd_setadpparms *adp_cmd;
4471 QETH_CARD_TEXT(card, 4, "chgmaccb");
4472 if (qeth_setadpparms_inspect_rc(cmd))
4475 adp_cmd = &cmd->data.setadapterparms;
4476 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4477 return -EADDRNOTAVAIL;
4479 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4480 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4481 return -EADDRNOTAVAIL;
4483 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4487 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4490 struct qeth_cmd_buffer *iob;
4491 struct qeth_ipa_cmd *cmd;
4493 QETH_CARD_TEXT(card, 4, "chgmac");
4495 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4496 SETADP_DATA_SIZEOF(change_addr));
4499 cmd = __ipa_cmd(iob);
4500 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4501 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4502 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4503 card->dev->dev_addr);
4504 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4508 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4510 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4511 struct qeth_reply *reply, unsigned long data)
4513 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4514 struct qeth_set_access_ctrl *access_ctrl_req;
4516 QETH_CARD_TEXT(card, 4, "setaccb");
4518 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4519 QETH_CARD_TEXT_(card, 2, "rc=%d",
4520 cmd->data.setadapterparms.hdr.return_code);
4521 if (cmd->data.setadapterparms.hdr.return_code !=
4522 SET_ACCESS_CTRL_RC_SUCCESS)
4523 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4524 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4525 cmd->data.setadapterparms.hdr.return_code);
4526 switch (qeth_setadpparms_inspect_rc(cmd)) {
4527 case SET_ACCESS_CTRL_RC_SUCCESS:
4528 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
4529 dev_info(&card->gdev->dev,
4530 "QDIO data connection isolation is deactivated\n");
4532 dev_info(&card->gdev->dev,
4533 "QDIO data connection isolation is activated\n");
4535 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4536 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4539 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4540 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4543 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4544 dev_err(&card->gdev->dev, "Adapter does not "
4545 "support QDIO data connection isolation\n");
4547 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4548 dev_err(&card->gdev->dev,
4549 "Adapter is dedicated. "
4550 "QDIO data connection isolation not supported\n");
4552 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4553 dev_err(&card->gdev->dev,
4554 "TSO does not permit QDIO data connection isolation\n");
4556 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4557 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4558 "support reflective relay mode\n");
4560 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4561 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4562 "enabled at the adjacent switch port");
4564 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4565 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4566 "at the adjacent switch failed\n");
4567 /* benign error while disabling ISOLATION_MODE_FWD */
4574 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4575 enum qeth_ipa_isolation_modes mode)
4578 struct qeth_cmd_buffer *iob;
4579 struct qeth_ipa_cmd *cmd;
4580 struct qeth_set_access_ctrl *access_ctrl_req;
4582 QETH_CARD_TEXT(card, 4, "setacctl");
4584 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4585 dev_err(&card->gdev->dev,
4586 "Adapter does not support QDIO data connection isolation\n");
4590 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4591 SETADP_DATA_SIZEOF(set_access_ctrl));
4594 cmd = __ipa_cmd(iob);
4595 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4596 access_ctrl_req->subcmd_code = mode;
4598 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4601 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4602 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4603 rc, CARD_DEVID(card));
4609 void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4611 struct qeth_card *card;
4613 card = dev->ml_priv;
4614 QETH_CARD_TEXT(card, 4, "txtimeo");
4615 qeth_schedule_recovery(card);
4617 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4619 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4621 struct qeth_card *card = dev->ml_priv;
4625 case MII_BMCR: /* Basic mode control register */
4627 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4628 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4629 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4630 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4631 rc |= BMCR_SPEED100;
4633 case MII_BMSR: /* Basic mode status register */
4634 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4635 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4638 case MII_PHYSID1: /* PHYS ID 1 */
4639 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4641 rc = (rc >> 5) & 0xFFFF;
4643 case MII_PHYSID2: /* PHYS ID 2 */
4644 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4646 case MII_ADVERTISE: /* Advertisement control reg */
4649 case MII_LPA: /* Link partner ability reg */
4650 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4651 LPA_100BASE4 | LPA_LPACK;
4653 case MII_EXPANSION: /* Expansion register */
4655 case MII_DCOUNTER: /* disconnect counter */
4657 case MII_FCSCOUNTER: /* false carrier counter */
4659 case MII_NWAYTEST: /* N-way auto-neg test register */
4661 case MII_RERRCOUNTER: /* rx error counter */
4662 rc = card->stats.rx_length_errors +
4663 card->stats.rx_frame_errors +
4664 card->stats.rx_fifo_errors;
4666 case MII_SREVISION: /* silicon revision */
4668 case MII_RESV1: /* reserved 1 */
4670 case MII_LBRERROR: /* loopback, rx, bypass error */
4672 case MII_PHYADDR: /* physical address */
4674 case MII_RESV2: /* reserved 2 */
4676 case MII_TPISTATUS: /* TPI status for 10mbps */
4678 case MII_NCONFIG: /* network interface config */
4686 static int qeth_snmp_command_cb(struct qeth_card *card,
4687 struct qeth_reply *reply, unsigned long data)
4689 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4690 struct qeth_arp_query_info *qinfo = reply->param;
4691 struct qeth_ipacmd_setadpparms *adp_cmd;
4692 unsigned int data_len;
4695 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4697 if (cmd->hdr.return_code) {
4698 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4701 if (cmd->data.setadapterparms.hdr.return_code) {
4702 cmd->hdr.return_code =
4703 cmd->data.setadapterparms.hdr.return_code;
4704 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4708 adp_cmd = &cmd->data.setadapterparms;
4709 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4710 if (adp_cmd->hdr.seq_no == 1) {
4711 snmp_data = &adp_cmd->data.snmp;
4713 snmp_data = &adp_cmd->data.snmp.request;
4714 data_len -= offsetof(struct qeth_snmp_cmd, request);
4717 /* check if there is enough room in userspace */
4718 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4719 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4722 QETH_CARD_TEXT_(card, 4, "snore%i",
4723 cmd->data.setadapterparms.hdr.used_total);
4724 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4725 cmd->data.setadapterparms.hdr.seq_no);
4726 /*copy entries to user buffer*/
4727 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4728 qinfo->udata_offset += data_len;
4730 if (cmd->data.setadapterparms.hdr.seq_no <
4731 cmd->data.setadapterparms.hdr.used_total)
4736 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4738 struct qeth_snmp_ureq __user *ureq;
4739 struct qeth_cmd_buffer *iob;
4740 unsigned int req_len;
4741 struct qeth_arp_query_info qinfo = {0, };
4744 QETH_CARD_TEXT(card, 3, "snmpcmd");
4746 if (IS_VM_NIC(card))
4749 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4753 ureq = (struct qeth_snmp_ureq __user *) udata;
4754 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4755 get_user(req_len, &ureq->hdr.req_len))
4758 /* Sanitize user input, to avoid overflows in iob size calculation: */
4759 if (req_len > QETH_BUFSIZE)
4762 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4766 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4767 &ureq->cmd, req_len)) {
4772 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4777 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4779 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4781 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4782 CARD_DEVID(card), rc);
4784 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4792 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4793 struct qeth_reply *reply,
4796 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4797 struct qeth_qoat_priv *priv = reply->param;
4800 QETH_CARD_TEXT(card, 3, "qoatcb");
4801 if (qeth_setadpparms_inspect_rc(cmd))
4804 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4806 if (resdatalen > (priv->buffer_len - priv->response_len))
4809 memcpy(priv->buffer + priv->response_len,
4810 &cmd->data.setadapterparms.hdr, resdatalen);
4811 priv->response_len += resdatalen;
4813 if (cmd->data.setadapterparms.hdr.seq_no <
4814 cmd->data.setadapterparms.hdr.used_total)
4819 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4822 struct qeth_cmd_buffer *iob;
4823 struct qeth_ipa_cmd *cmd;
4824 struct qeth_query_oat *oat_req;
4825 struct qeth_query_oat_data oat_data;
4826 struct qeth_qoat_priv priv;
4829 QETH_CARD_TEXT(card, 3, "qoatcmd");
4831 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4834 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4837 priv.buffer_len = oat_data.buffer_len;
4838 priv.response_len = 0;
4839 priv.buffer = vzalloc(oat_data.buffer_len);
4843 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4844 SETADP_DATA_SIZEOF(query_oat));
4849 cmd = __ipa_cmd(iob);
4850 oat_req = &cmd->data.setadapterparms.data.query_oat;
4851 oat_req->subcmd_code = oat_data.command;
4853 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
4855 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4856 u64_to_user_ptr(oat_data.ptr);
4857 oat_data.response_len = priv.response_len;
4859 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4860 copy_to_user(udata, &oat_data, sizeof(oat_data)))
4869 static int qeth_query_card_info_cb(struct qeth_card *card,
4870 struct qeth_reply *reply, unsigned long data)
4872 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4873 struct qeth_link_info *link_info = reply->param;
4874 struct qeth_query_card_info *card_info;
4876 QETH_CARD_TEXT(card, 2, "qcrdincb");
4877 if (qeth_setadpparms_inspect_rc(cmd))
4880 card_info = &cmd->data.setadapterparms.data.card_info;
4881 netdev_dbg(card->dev,
4882 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
4883 card_info->card_type, card_info->port_mode,
4884 card_info->port_speed);
4886 switch (card_info->port_mode) {
4887 case CARD_INFO_PORTM_FULLDUPLEX:
4888 link_info->duplex = DUPLEX_FULL;
4890 case CARD_INFO_PORTM_HALFDUPLEX:
4891 link_info->duplex = DUPLEX_HALF;
4894 link_info->duplex = DUPLEX_UNKNOWN;
4897 switch (card_info->card_type) {
4898 case CARD_INFO_TYPE_1G_COPPER_A:
4899 case CARD_INFO_TYPE_1G_COPPER_B:
4900 link_info->speed = SPEED_1000;
4901 link_info->port = PORT_TP;
4903 case CARD_INFO_TYPE_1G_FIBRE_A:
4904 case CARD_INFO_TYPE_1G_FIBRE_B:
4905 link_info->speed = SPEED_1000;
4906 link_info->port = PORT_FIBRE;
4908 case CARD_INFO_TYPE_10G_FIBRE_A:
4909 case CARD_INFO_TYPE_10G_FIBRE_B:
4910 link_info->speed = SPEED_10000;
4911 link_info->port = PORT_FIBRE;
4914 switch (card_info->port_speed) {
4915 case CARD_INFO_PORTS_10M:
4916 link_info->speed = SPEED_10;
4918 case CARD_INFO_PORTS_100M:
4919 link_info->speed = SPEED_100;
4921 case CARD_INFO_PORTS_1G:
4922 link_info->speed = SPEED_1000;
4924 case CARD_INFO_PORTS_10G:
4925 link_info->speed = SPEED_10000;
4927 case CARD_INFO_PORTS_25G:
4928 link_info->speed = SPEED_25000;
4931 link_info->speed = SPEED_UNKNOWN;
4934 link_info->port = PORT_OTHER;
4940 int qeth_query_card_info(struct qeth_card *card,
4941 struct qeth_link_info *link_info)
4943 struct qeth_cmd_buffer *iob;
4945 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4946 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4948 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4952 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
4955 static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4956 struct qeth_reply *reply_priv,
4959 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4960 struct qeth_link_info *link_info = reply_priv->param;
4961 struct qeth_query_oat_physical_if *phys_if;
4962 struct qeth_query_oat_reply *reply;
4964 if (qeth_setadpparms_inspect_rc(cmd))
4967 /* Multi-part reply is unexpected, don't bother: */
4968 if (cmd->data.setadapterparms.hdr.used_total > 1)
4971 /* Expect the reply to start with phys_if data: */
4972 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4973 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4974 reply->length < sizeof(*reply))
4977 phys_if = &reply->phys_if;
4979 switch (phys_if->speed_duplex) {
4980 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4981 link_info->speed = SPEED_10;
4982 link_info->duplex = DUPLEX_HALF;
4984 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4985 link_info->speed = SPEED_10;
4986 link_info->duplex = DUPLEX_FULL;
4988 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4989 link_info->speed = SPEED_100;
4990 link_info->duplex = DUPLEX_HALF;
4992 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4993 link_info->speed = SPEED_100;
4994 link_info->duplex = DUPLEX_FULL;
4996 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4997 link_info->speed = SPEED_1000;
4998 link_info->duplex = DUPLEX_HALF;
5000 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
5001 link_info->speed = SPEED_1000;
5002 link_info->duplex = DUPLEX_FULL;
5004 case QETH_QOAT_PHYS_SPEED_10G_FULL:
5005 link_info->speed = SPEED_10000;
5006 link_info->duplex = DUPLEX_FULL;
5008 case QETH_QOAT_PHYS_SPEED_25G_FULL:
5009 link_info->speed = SPEED_25000;
5010 link_info->duplex = DUPLEX_FULL;
5012 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
5014 link_info->speed = SPEED_UNKNOWN;
5015 link_info->duplex = DUPLEX_UNKNOWN;
5019 switch (phys_if->media_type) {
5020 case QETH_QOAT_PHYS_MEDIA_COPPER:
5021 link_info->port = PORT_TP;
5022 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
5024 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
5025 link_info->port = PORT_FIBRE;
5026 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
5028 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
5029 link_info->port = PORT_FIBRE;
5030 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
5033 link_info->port = PORT_OTHER;
5034 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
5041 static void qeth_init_link_info(struct qeth_card *card)
5043 card->info.link_info.duplex = DUPLEX_FULL;
5045 if (IS_IQD(card) || IS_VM_NIC(card)) {
5046 card->info.link_info.speed = SPEED_10000;
5047 card->info.link_info.port = PORT_FIBRE;
5048 card->info.link_info.link_mode = QETH_LINK_MODE_FIBRE_SHORT;
5050 switch (card->info.link_type) {
5051 case QETH_LINK_TYPE_FAST_ETH:
5052 case QETH_LINK_TYPE_LANE_ETH100:
5053 card->info.link_info.speed = SPEED_100;
5054 card->info.link_info.port = PORT_TP;
5056 case QETH_LINK_TYPE_GBIT_ETH:
5057 case QETH_LINK_TYPE_LANE_ETH1000:
5058 card->info.link_info.speed = SPEED_1000;
5059 card->info.link_info.port = PORT_FIBRE;
5061 case QETH_LINK_TYPE_10GBIT_ETH:
5062 card->info.link_info.speed = SPEED_10000;
5063 card->info.link_info.port = PORT_FIBRE;
5065 case QETH_LINK_TYPE_25GBIT_ETH:
5066 card->info.link_info.speed = SPEED_25000;
5067 card->info.link_info.port = PORT_FIBRE;
5070 dev_info(&card->gdev->dev, "Unknown link type %x\n",
5071 card->info.link_type);
5072 card->info.link_info.speed = SPEED_UNKNOWN;
5073 card->info.link_info.port = PORT_OTHER;
5076 card->info.link_info.link_mode = QETH_LINK_MODE_UNKNOWN;
5079 /* Get more accurate data via QUERY OAT: */
5080 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
5081 struct qeth_link_info link_info;
5082 struct qeth_cmd_buffer *iob;
5084 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
5085 SETADP_DATA_SIZEOF(query_oat));
5087 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
5088 struct qeth_query_oat *oat_req;
5090 oat_req = &cmd->data.setadapterparms.data.query_oat;
5091 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
5093 if (!qeth_send_ipa_cmd(card, iob,
5094 qeth_init_link_info_oat_cb,
5096 if (link_info.speed != SPEED_UNKNOWN)
5097 card->info.link_info.speed = link_info.speed;
5098 if (link_info.duplex != DUPLEX_UNKNOWN)
5099 card->info.link_info.duplex = link_info.duplex;
5100 if (link_info.port != PORT_OTHER)
5101 card->info.link_info.port = link_info.port;
5102 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
5103 card->info.link_info.link_mode = link_info.link_mode;
5110 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
5111 * @card: pointer to a qeth_card
5114 * 0, if a MAC address has been set for the card's netdevice
5115 * a return code, for various error conditions
5117 int qeth_vm_request_mac(struct qeth_card *card)
5119 struct diag26c_mac_resp *response;
5120 struct diag26c_mac_req *request;
5123 QETH_CARD_TEXT(card, 2, "vmreqmac");
5125 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
5126 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
5127 if (!request || !response) {
5132 request->resp_buf_len = sizeof(*response);
5133 request->resp_version = DIAG26C_VERSION2;
5134 request->op_code = DIAG26C_GET_MAC;
5135 request->devno = card->info.ddev_devno;
5137 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5138 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
5139 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5142 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
5144 if (request->resp_buf_len < sizeof(*response) ||
5145 response->version != request->resp_version) {
5147 QETH_CARD_TEXT(card, 2, "badresp");
5148 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
5149 sizeof(request->resp_buf_len));
5150 } else if (!is_valid_ether_addr(response->mac)) {
5152 QETH_CARD_TEXT(card, 2, "badmac");
5153 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
5155 ether_addr_copy(card->dev->dev_addr, response->mac);
5163 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5165 static void qeth_determine_capabilities(struct qeth_card *card)
5167 struct qeth_channel *channel = &card->data;
5168 struct ccw_device *ddev = channel->ccwdev;
5170 int ddev_offline = 0;
5172 QETH_CARD_TEXT(card, 2, "detcapab");
5173 if (!ddev->online) {
5175 rc = qeth_start_channel(channel);
5177 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5182 rc = qeth_read_conf_data(card);
5184 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5185 CARD_DEVID(card), rc);
5186 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5190 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5192 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5194 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5195 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5196 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5197 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5198 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
5199 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5200 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5201 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5202 dev_info(&card->gdev->dev,
5203 "Completion Queueing supported\n");
5205 card->options.cq = QETH_CQ_NOTAVAILABLE;
5209 if (ddev_offline == 1)
5210 qeth_stop_channel(channel);
5215 static void qeth_read_ccw_conf_data(struct qeth_card *card)
5217 struct qeth_card_info *info = &card->info;
5218 struct ccw_device *cdev = CARD_DDEV(card);
5219 struct ccw_dev_id dev_id;
5221 QETH_CARD_TEXT(card, 2, "ccwconfd");
5222 ccw_device_get_id(cdev, &dev_id);
5224 info->ddev_devno = dev_id.devno;
5225 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5226 !ccw_device_get_iid(cdev, &info->iid) &&
5227 !ccw_device_get_chid(cdev, 0, &info->chid);
5228 info->ssid = dev_id.ssid;
5230 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5231 info->chid, info->chpid);
5233 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5234 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5235 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5236 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5237 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5238 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5239 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5242 static int qeth_qdio_establish(struct qeth_card *card)
5244 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5245 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
5246 struct qeth_qib_parms *qib_parms = NULL;
5247 struct qdio_initialize init_data;
5251 QETH_CARD_TEXT(card, 2, "qdioest");
5253 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5254 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5258 qeth_fill_qib_parms(card, qib_parms);
5261 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
5262 if (card->options.cq == QETH_CQ_ENABLED)
5263 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
5265 for (i = 0; i < card->qdio.no_out_queues; i++)
5266 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
5268 memset(&init_data, 0, sizeof(struct qdio_initialize));
5269 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5271 init_data.qib_param_field_format = 0;
5272 init_data.qib_param_field = (void *)qib_parms;
5273 init_data.no_input_qs = card->qdio.no_in_queues;
5274 init_data.no_output_qs = card->qdio.no_out_queues;
5275 init_data.input_handler = qeth_qdio_input_handler;
5276 init_data.output_handler = qeth_qdio_output_handler;
5277 init_data.irq_poll = qeth_qdio_poll;
5278 init_data.int_parm = (unsigned long) card;
5279 init_data.input_sbal_addr_array = in_sbal_ptrs;
5280 init_data.output_sbal_addr_array = out_sbal_ptrs;
5281 init_data.output_sbal_state_array = card->qdio.out_bufstates;
5282 init_data.scan_threshold = IS_IQD(card) ? 0 : 32;
5284 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5285 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5286 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5287 init_data.no_output_qs);
5289 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5292 rc = qdio_establish(CARD_DDEV(card), &init_data);
5294 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5295 qdio_free(CARD_DDEV(card));
5299 switch (card->options.cq) {
5300 case QETH_CQ_ENABLED:
5301 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5303 case QETH_CQ_DISABLED:
5304 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5315 static void qeth_core_free_card(struct qeth_card *card)
5317 QETH_CARD_TEXT(card, 2, "freecrd");
5319 unregister_service_level(&card->qeth_service_level);
5320 debugfs_remove_recursive(card->debugfs);
5321 qeth_put_cmd(card->read_cmd);
5322 destroy_workqueue(card->event_wq);
5323 dev_set_drvdata(&card->gdev->dev, NULL);
5327 static void qeth_trace_features(struct qeth_card *card)
5329 QETH_CARD_TEXT(card, 2, "features");
5330 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5331 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5332 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5333 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5334 sizeof(card->info.diagass_support));
5337 static struct ccw_device_id qeth_ids[] = {
5338 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5339 .driver_info = QETH_CARD_TYPE_OSD},
5340 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5341 .driver_info = QETH_CARD_TYPE_IQD},
5342 #ifdef CONFIG_QETH_OSN
5343 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5344 .driver_info = QETH_CARD_TYPE_OSN},
5346 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5347 .driver_info = QETH_CARD_TYPE_OSM},
5348 #ifdef CONFIG_QETH_OSX
5349 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5350 .driver_info = QETH_CARD_TYPE_OSX},
5354 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5356 static struct ccw_driver qeth_ccw_driver = {
5358 .owner = THIS_MODULE,
5362 .probe = ccwgroup_probe_ccwdev,
5363 .remove = ccwgroup_remove_ccwdev,
5366 static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
5371 QETH_CARD_TEXT(card, 2, "hrdsetup");
5372 atomic_set(&card->force_alloc_skb, 0);
5373 rc = qeth_update_from_chp_desc(card);
5378 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5380 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
5381 qeth_stop_channel(&card->data);
5382 qeth_stop_channel(&card->write);
5383 qeth_stop_channel(&card->read);
5384 qdio_free(CARD_DDEV(card));
5386 rc = qeth_start_channel(&card->read);
5389 rc = qeth_start_channel(&card->write);
5392 rc = qeth_start_channel(&card->data);
5396 if (rc == -ERESTARTSYS) {
5397 QETH_CARD_TEXT(card, 2, "break1");
5400 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5407 qeth_determine_capabilities(card);
5408 qeth_read_ccw_conf_data(card);
5409 qeth_idx_init(card);
5411 rc = qeth_idx_activate_read_channel(card);
5413 QETH_CARD_TEXT(card, 2, "break2");
5416 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5423 rc = qeth_idx_activate_write_channel(card);
5425 QETH_CARD_TEXT(card, 2, "break3");
5428 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
5434 card->read_or_write_problem = 0;
5435 rc = qeth_mpc_initialize(card);
5437 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5441 rc = qeth_send_startlan(card);
5443 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5444 if (rc == -ENETDOWN) {
5445 dev_warn(&card->gdev->dev, "The LAN is offline\n");
5446 *carrier_ok = false;
5454 card->options.ipa4.supported = 0;
5455 card->options.ipa6.supported = 0;
5456 card->options.adp.supported = 0;
5457 card->options.sbp.supported_funcs = 0;
5458 card->info.diagass_support = 0;
5459 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5462 if (qeth_is_supported(card, IPA_IPV6)) {
5463 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5467 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5468 rc = qeth_query_setadapterparms(card);
5470 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
5474 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5475 rc = qeth_query_setdiagass(card);
5477 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5480 qeth_trace_features(card);
5482 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5483 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5484 card->info.hwtrap = 0;
5486 if (card->options.isolation != ISOLATION_MODE_NONE) {
5487 rc = qeth_setadpparms_set_access_ctrl(card,
5488 card->options.isolation);
5493 qeth_init_link_info(card);
5495 rc = qeth_init_qdio_queues(card);
5497 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5503 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5504 "an error on the device\n");
5505 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5506 CARD_DEVID(card), rc);
5510 static int qeth_set_online(struct qeth_card *card)
5515 mutex_lock(&card->discipline_mutex);
5516 mutex_lock(&card->conf_mutex);
5517 QETH_CARD_TEXT(card, 2, "setonlin");
5519 rc = qeth_hardsetup_card(card, &carrier_ok);
5521 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5526 qeth_print_status_message(card);
5528 if (card->dev->reg_state != NETREG_REGISTERED)
5529 /* no need for locking / error handling at this early stage: */
5530 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
5532 rc = card->discipline->set_online(card, carrier_ok);
5536 /* let user_space know that device is online */
5537 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5539 mutex_unlock(&card->conf_mutex);
5540 mutex_unlock(&card->discipline_mutex);
5545 qeth_qdio_clear_card(card, 0);
5546 qeth_clear_working_pool_list(card);
5547 qeth_flush_local_addrs(card);
5549 qeth_stop_channel(&card->data);
5550 qeth_stop_channel(&card->write);
5551 qeth_stop_channel(&card->read);
5552 qdio_free(CARD_DDEV(card));
5554 mutex_unlock(&card->conf_mutex);
5555 mutex_unlock(&card->discipline_mutex);
5559 int qeth_set_offline(struct qeth_card *card, bool resetting)
5563 mutex_lock(&card->discipline_mutex);
5564 mutex_lock(&card->conf_mutex);
5565 QETH_CARD_TEXT(card, 3, "setoffl");
5567 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5568 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5569 card->info.hwtrap = 1;
5572 /* cancel any stalled cmd that might block the rtnl: */
5573 qeth_clear_ipacmd_list(card);
5576 card->info.open_when_online = card->dev->flags & IFF_UP;
5577 dev_close(card->dev);
5578 netif_device_detach(card->dev);
5579 netif_carrier_off(card->dev);
5582 cancel_work_sync(&card->rx_mode_work);
5584 card->discipline->set_offline(card);
5586 qeth_qdio_clear_card(card, 0);
5587 qeth_drain_output_queues(card);
5588 qeth_clear_working_pool_list(card);
5589 qeth_flush_local_addrs(card);
5590 card->info.promisc_mode = 0;
5592 rc = qeth_stop_channel(&card->data);
5593 rc2 = qeth_stop_channel(&card->write);
5594 rc3 = qeth_stop_channel(&card->read);
5596 rc = (rc2) ? rc2 : rc3;
5598 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5599 qdio_free(CARD_DDEV(card));
5601 /* let user_space know that device is offline */
5602 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5604 mutex_unlock(&card->conf_mutex);
5605 mutex_unlock(&card->discipline_mutex);
5608 EXPORT_SYMBOL_GPL(qeth_set_offline);
5610 static int qeth_do_reset(void *data)
5612 struct qeth_card *card = data;
5615 QETH_CARD_TEXT(card, 2, "recover1");
5616 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5618 QETH_CARD_TEXT(card, 2, "recover2");
5619 dev_warn(&card->gdev->dev,
5620 "A recovery process has been started for the device\n");
5622 qeth_set_offline(card, true);
5623 rc = qeth_set_online(card);
5625 dev_info(&card->gdev->dev,
5626 "Device successfully recovered!\n");
5628 ccwgroup_set_offline(card->gdev);
5629 dev_warn(&card->gdev->dev,
5630 "The qeth device driver failed to recover an error on the device\n");
5632 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5633 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5637 #if IS_ENABLED(CONFIG_QETH_L3)
5638 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5639 struct qeth_hdr *hdr)
5641 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5642 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5643 struct net_device *dev = skb->dev;
5645 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5646 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5647 "FAKELL", skb->len);
5651 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5652 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5654 unsigned char tg_addr[ETH_ALEN];
5656 skb_reset_network_header(skb);
5657 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5658 case QETH_CAST_MULTICAST:
5659 if (prot == ETH_P_IP)
5660 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5662 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5663 QETH_CARD_STAT_INC(card, rx_multicast);
5665 case QETH_CAST_BROADCAST:
5666 ether_addr_copy(tg_addr, dev->broadcast);
5667 QETH_CARD_STAT_INC(card, rx_multicast);
5670 if (card->options.sniffer)
5671 skb->pkt_type = PACKET_OTHERHOST;
5672 ether_addr_copy(tg_addr, dev->dev_addr);
5675 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5676 dev_hard_header(skb, dev, prot, tg_addr,
5677 &l3_hdr->next_hop.rx.src_mac, skb->len);
5679 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5683 /* copy VLAN tag from hdr into skb */
5684 if (!card->options.sniffer &&
5685 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5686 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5687 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5689 l3_hdr->next_hop.rx.vlan_id;
5691 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5696 static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5697 struct qeth_hdr *hdr, bool uses_frags)
5699 struct napi_struct *napi = &card->napi;
5702 switch (hdr->hdr.l2.id) {
5703 case QETH_HEADER_TYPE_OSN:
5704 skb_push(skb, sizeof(*hdr));
5705 skb_copy_to_linear_data(skb, hdr, sizeof(*hdr));
5706 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5707 QETH_CARD_STAT_INC(card, rx_packets);
5709 card->osn_info.data_cb(skb);
5711 #if IS_ENABLED(CONFIG_QETH_L3)
5712 case QETH_HEADER_TYPE_LAYER3:
5713 qeth_l3_rebuild_skb(card, skb, hdr);
5714 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5717 case QETH_HEADER_TYPE_LAYER2:
5718 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5723 napi_free_frags(napi);
5725 dev_kfree_skb_any(skb);
5729 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5730 skb->ip_summed = CHECKSUM_UNNECESSARY;
5731 QETH_CARD_STAT_INC(card, rx_skb_csum);
5733 skb->ip_summed = CHECKSUM_NONE;
5736 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5737 QETH_CARD_STAT_INC(card, rx_packets);
5738 if (skb_is_nonlinear(skb)) {
5739 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5740 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5741 skb_shinfo(skb)->nr_frags);
5745 napi_gro_frags(napi);
5747 skb->protocol = eth_type_trans(skb, skb->dev);
5748 napi_gro_receive(napi, skb);
5752 static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
5754 struct page *page = virt_to_page(data);
5755 unsigned int next_frag;
5757 next_frag = skb_shinfo(skb)->nr_frags;
5759 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5763 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5765 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5768 static int qeth_extract_skb(struct qeth_card *card,
5769 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
5772 struct qeth_priv *priv = netdev_priv(card->dev);
5773 struct qdio_buffer *buffer = qethbuffer->buffer;
5774 struct napi_struct *napi = &card->napi;
5775 struct qdio_buffer_element *element;
5776 unsigned int linear_len = 0;
5777 bool uses_frags = false;
5778 int offset = *__offset;
5779 bool use_rx_sg = false;
5780 unsigned int headroom;
5781 struct qeth_hdr *hdr;
5782 struct sk_buff *skb;
5785 element = &buffer->element[*element_no];
5788 /* qeth_hdr must not cross element boundaries */
5789 while (element->length < offset + sizeof(struct qeth_hdr)) {
5790 if (qeth_is_last_sbale(element))
5796 hdr = phys_to_virt(element->addr) + offset;
5797 offset += sizeof(*hdr);
5800 switch (hdr->hdr.l2.id) {
5801 case QETH_HEADER_TYPE_LAYER2:
5802 skb_len = hdr->hdr.l2.pkt_length;
5803 linear_len = ETH_HLEN;
5806 case QETH_HEADER_TYPE_LAYER3:
5807 skb_len = hdr->hdr.l3.length;
5808 if (!IS_LAYER3(card)) {
5809 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5813 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5814 linear_len = ETH_HLEN;
5819 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5820 linear_len = sizeof(struct ipv6hdr);
5822 linear_len = sizeof(struct iphdr);
5823 headroom = ETH_HLEN;
5825 case QETH_HEADER_TYPE_OSN:
5826 skb_len = hdr->hdr.osn.pdu_length;
5827 if (!IS_OSN(card)) {
5828 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5832 linear_len = skb_len;
5833 headroom = sizeof(struct qeth_hdr);
5836 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5837 QETH_CARD_STAT_INC(card, rx_frame_errors);
5839 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5841 /* Can't determine packet length, drop the whole buffer. */
5842 return -EPROTONOSUPPORT;
5845 if (skb_len < linear_len) {
5846 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5850 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5851 (skb_len > READ_ONCE(priv->rx_copybreak) &&
5852 !atomic_read(&card->force_alloc_skb) &&
5856 /* QETH_CQ_ENABLED only: */
5857 if (qethbuffer->rx_skb &&
5858 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
5859 skb = qethbuffer->rx_skb;
5860 qethbuffer->rx_skb = NULL;
5864 skb = napi_get_frags(napi);
5866 /* -ENOMEM, no point in falling back further. */
5867 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5871 if (skb_tailroom(skb) >= linear_len + headroom) {
5876 netdev_info_once(card->dev,
5877 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5878 linear_len + headroom, skb_tailroom(skb));
5879 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
5882 linear_len = skb_len;
5883 skb = napi_alloc_skb(napi, linear_len + headroom);
5885 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5891 skb_reserve(skb, headroom);
5894 int data_len = min(skb_len, (int)(element->length - offset));
5895 char *data = phys_to_virt(element->addr) + offset;
5897 skb_len -= data_len;
5900 /* Extract data from current element: */
5901 if (skb && data_len) {
5903 unsigned int copy_len;
5905 copy_len = min_t(unsigned int, linear_len,
5908 skb_put_data(skb, data, copy_len);
5909 linear_len -= copy_len;
5910 data_len -= copy_len;
5915 qeth_create_skb_frag(skb, data, data_len);
5918 /* Step forward to next element: */
5920 if (qeth_is_last_sbale(element)) {
5921 QETH_CARD_TEXT(card, 4, "unexeob");
5922 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5925 napi_free_frags(napi);
5927 dev_kfree_skb_any(skb);
5928 QETH_CARD_STAT_INC(card,
5938 /* This packet was skipped, go get another one: */
5942 *element_no = element - &buffer->element[0];
5945 qeth_receive_skb(card, skb, hdr, uses_frags);
5949 static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5950 struct qeth_qdio_buffer *buf, bool *done)
5952 unsigned int work_done = 0;
5955 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
5956 &card->rx.e_offset)) {
5968 static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
5970 struct qeth_rx *ctx = &card->rx;
5971 unsigned int work_done = 0;
5973 while (budget > 0) {
5974 struct qeth_qdio_buffer *buffer;
5975 unsigned int skbs_done = 0;
5978 /* Fetch completed RX buffers: */
5979 if (!card->rx.b_count) {
5980 card->rx.qdio_err = 0;
5981 card->rx.b_count = qdio_get_next_buffers(
5982 card->data.ccwdev, 0, &card->rx.b_index,
5983 &card->rx.qdio_err);
5984 if (card->rx.b_count <= 0) {
5985 card->rx.b_count = 0;
5990 /* Process one completed RX buffer: */
5991 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5992 if (!(card->rx.qdio_err &&
5993 qeth_check_qdio_errors(card, buffer->buffer,
5994 card->rx.qdio_err, "qinerr")))
5995 skbs_done = qeth_extract_skbs(card, budget, buffer,
6000 work_done += skbs_done;
6001 budget -= skbs_done;
6004 QETH_CARD_STAT_INC(card, rx_bufs);
6005 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
6006 buffer->pool_entry = NULL;
6009 ctx->bufs_refill -= qeth_rx_refill_queue(card,
6012 /* Step forward to next buffer: */
6013 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
6014 card->rx.buf_element = 0;
6015 card->rx.e_offset = 0;
6022 static void qeth_cq_poll(struct qeth_card *card)
6024 unsigned int work_done = 0;
6026 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
6027 unsigned int start, error;
6030 completed = qdio_inspect_queue(CARD_DDEV(card), 1, true, &start,
6035 qeth_qdio_cq_handler(card, error, 1, start, completed);
6036 work_done += completed;
6040 int qeth_poll(struct napi_struct *napi, int budget)
6042 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
6043 unsigned int work_done;
6045 work_done = qeth_rx_poll(card, budget);
6047 if (card->options.cq == QETH_CQ_ENABLED)
6051 struct qeth_rx *ctx = &card->rx;
6053 /* Process any substantial refill backlog: */
6054 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
6056 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
6057 if (work_done >= budget)
6061 if (napi_complete_done(napi, work_done) &&
6062 qdio_start_irq(CARD_DDEV(card)))
6063 napi_schedule(napi);
6067 EXPORT_SYMBOL_GPL(qeth_poll);
6069 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
6070 unsigned int bidx, bool error, int budget)
6072 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
6073 u8 sflags = buffer->buffer->element[15].sflags;
6074 struct qeth_card *card = queue->card;
6076 if (queue->bufstates && (queue->bufstates[bidx].flags &
6077 QDIO_OUTBUF_STATE_FLAG_PENDING)) {
6078 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
6080 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
6082 switch (atomic_cmpxchg(&buffer->state,
6083 QETH_QDIO_BUF_PRIMED,
6084 QETH_QDIO_BUF_PENDING)) {
6085 case QETH_QDIO_BUF_PRIMED:
6086 /* We have initial ownership, no QAOB (yet): */
6087 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
6089 /* Handle race with qeth_qdio_handle_aob(): */
6090 switch (atomic_xchg(&buffer->state,
6091 QETH_QDIO_BUF_NEED_QAOB)) {
6092 case QETH_QDIO_BUF_PENDING:
6093 /* No concurrent QAOB notification. */
6095 /* Prepare the queue slot for immediate re-use: */
6096 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
6097 if (qeth_init_qdio_out_buf(queue, bidx)) {
6098 QETH_CARD_TEXT(card, 2, "outofbuf");
6099 qeth_schedule_recovery(card);
6102 /* Skip clearing the buffer: */
6104 case QETH_QDIO_BUF_QAOB_OK:
6105 qeth_notify_skbs(queue, buffer,
6106 TX_NOTIFY_DELAYED_OK);
6109 case QETH_QDIO_BUF_QAOB_ERROR:
6110 qeth_notify_skbs(queue, buffer,
6111 TX_NOTIFY_DELAYED_GENERALERROR);
6119 case QETH_QDIO_BUF_QAOB_OK:
6120 /* qeth_qdio_handle_aob() already received a QAOB: */
6121 qeth_notify_skbs(queue, buffer, TX_NOTIFY_OK);
6124 case QETH_QDIO_BUF_QAOB_ERROR:
6125 /* qeth_qdio_handle_aob() already received a QAOB: */
6126 qeth_notify_skbs(queue, buffer, TX_NOTIFY_GENERALERROR);
6132 } else if (card->options.cq == QETH_CQ_ENABLED) {
6133 qeth_notify_skbs(queue, buffer,
6134 qeth_compute_cq_notification(sflags, 0));
6137 qeth_clear_output_buffer(queue, buffer, error, budget);
6140 static int qeth_tx_poll(struct napi_struct *napi, int budget)
6142 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
6143 unsigned int queue_no = queue->queue_no;
6144 struct qeth_card *card = queue->card;
6145 struct net_device *dev = card->dev;
6146 unsigned int work_done = 0;
6147 struct netdev_queue *txq;
6149 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
6152 unsigned int start, error, i;
6153 unsigned int packets = 0;
6154 unsigned int bytes = 0;
6157 if (qeth_out_queue_is_empty(queue)) {
6158 napi_complete(napi);
6162 /* Give the CPU a breather: */
6163 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
6164 QETH_TXQ_STAT_INC(queue, completion_yield);
6165 if (napi_complete_done(napi, 0))
6166 napi_schedule(napi);
6170 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
6172 if (completed <= 0) {
6173 /* Ensure we see TX completion for pending work: */
6174 if (napi_complete_done(napi, 0))
6175 qeth_tx_arm_timer(queue, QETH_TX_TIMER_USECS);
6179 for (i = start; i < start + completed; i++) {
6180 struct qeth_qdio_out_buffer *buffer;
6181 unsigned int bidx = QDIO_BUFNR(i);
6183 buffer = queue->bufs[bidx];
6184 packets += buffer->frames;
6185 bytes += buffer->bytes;
6187 qeth_handle_send_error(card, buffer, error);
6188 qeth_iqd_tx_complete(queue, bidx, error, budget);
6189 qeth_cleanup_handled_pending(queue, bidx, false);
6192 netdev_tx_completed_queue(txq, packets, bytes);
6193 atomic_sub(completed, &queue->used_buffers);
6194 work_done += completed;
6196 /* xmit may have observed the full-condition, but not yet
6197 * stopped the txq. In which case the code below won't trigger.
6198 * So before returning, xmit will re-check the txq's fill level
6199 * and wake it up if needed.
6201 if (netif_tx_queue_stopped(txq) &&
6202 !qeth_out_queue_is_full(queue))
6203 netif_tx_wake_queue(txq);
6207 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6209 if (!cmd->hdr.return_code)
6210 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6211 return cmd->hdr.return_code;
6214 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6215 struct qeth_reply *reply,
6218 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6219 struct qeth_ipa_caps *caps = reply->param;
6221 if (qeth_setassparms_inspect_rc(cmd))
6224 caps->supported = cmd->data.setassparms.data.caps.supported;
6225 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6229 int qeth_setassparms_cb(struct qeth_card *card,
6230 struct qeth_reply *reply, unsigned long data)
6232 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6234 QETH_CARD_TEXT(card, 4, "defadpcb");
6236 if (cmd->hdr.return_code)
6239 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6240 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
6241 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
6242 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
6243 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
6246 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
6248 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6249 enum qeth_ipa_funcs ipa_func,
6251 unsigned int data_length,
6252 enum qeth_prot_versions prot)
6254 struct qeth_ipacmd_setassparms *setassparms;
6255 struct qeth_ipacmd_setassparms_hdr *hdr;
6256 struct qeth_cmd_buffer *iob;
6258 QETH_CARD_TEXT(card, 4, "getasscm");
6259 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6261 offsetof(struct qeth_ipacmd_setassparms,
6266 setassparms = &__ipa_cmd(iob)->data.setassparms;
6267 setassparms->assist_no = ipa_func;
6269 hdr = &setassparms->hdr;
6270 hdr->length = sizeof(*hdr) + data_length;
6271 hdr->command_code = cmd_code;
6274 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
6276 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6277 enum qeth_ipa_funcs ipa_func,
6278 u16 cmd_code, u32 *data,
6279 enum qeth_prot_versions prot)
6281 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
6282 struct qeth_cmd_buffer *iob;
6284 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
6285 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
6290 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
6291 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
6293 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
6295 static void qeth_unregister_dbf_views(void)
6299 for (x = 0; x < QETH_DBF_INFOS; x++) {
6300 debug_unregister(qeth_dbf[x].id);
6301 qeth_dbf[x].id = NULL;
6305 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
6307 char dbf_txt_buf[32];
6310 if (!debug_level_enabled(id, level))
6312 va_start(args, fmt);
6313 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6315 debug_text_event(id, level, dbf_txt_buf);
6317 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6319 static int qeth_register_dbf_views(void)
6324 for (x = 0; x < QETH_DBF_INFOS; x++) {
6325 /* register the areas */
6326 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6330 if (qeth_dbf[x].id == NULL) {
6331 qeth_unregister_dbf_views();
6335 /* register a view */
6336 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6338 qeth_unregister_dbf_views();
6342 /* set a passing level */
6343 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6349 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
6351 int qeth_core_load_discipline(struct qeth_card *card,
6352 enum qeth_discipline_id discipline)
6354 mutex_lock(&qeth_mod_mutex);
6355 switch (discipline) {
6356 case QETH_DISCIPLINE_LAYER3:
6357 card->discipline = try_then_request_module(
6358 symbol_get(qeth_l3_discipline), "qeth_l3");
6360 case QETH_DISCIPLINE_LAYER2:
6361 card->discipline = try_then_request_module(
6362 symbol_get(qeth_l2_discipline), "qeth_l2");
6367 mutex_unlock(&qeth_mod_mutex);
6369 if (!card->discipline) {
6370 dev_err(&card->gdev->dev, "There is no kernel module to "
6371 "support discipline %d\n", discipline);
6375 card->options.layer = discipline;
6379 void qeth_core_free_discipline(struct qeth_card *card)
6381 if (IS_LAYER2(card))
6382 symbol_put(qeth_l2_discipline);
6384 symbol_put(qeth_l3_discipline);
6385 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
6386 card->discipline = NULL;
6389 const struct device_type qeth_generic_devtype = {
6390 .name = "qeth_generic",
6392 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
6394 static const struct device_type qeth_osn_devtype = {
6398 #define DBF_NAME_LEN 20
6400 struct qeth_dbf_entry {
6401 char dbf_name[DBF_NAME_LEN];
6402 debug_info_t *dbf_info;
6403 struct list_head dbf_list;
6406 static LIST_HEAD(qeth_dbf_list);
6407 static DEFINE_MUTEX(qeth_dbf_list_mutex);
6409 static debug_info_t *qeth_get_dbf_entry(char *name)
6411 struct qeth_dbf_entry *entry;
6412 debug_info_t *rc = NULL;
6414 mutex_lock(&qeth_dbf_list_mutex);
6415 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6416 if (strcmp(entry->dbf_name, name) == 0) {
6417 rc = entry->dbf_info;
6421 mutex_unlock(&qeth_dbf_list_mutex);
6425 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6427 struct qeth_dbf_entry *new_entry;
6429 card->debug = debug_register(name, 2, 1, 8);
6431 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6434 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6436 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6439 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
6440 new_entry->dbf_info = card->debug;
6441 mutex_lock(&qeth_dbf_list_mutex);
6442 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6443 mutex_unlock(&qeth_dbf_list_mutex);
6448 debug_unregister(card->debug);
6453 static void qeth_clear_dbf_list(void)
6455 struct qeth_dbf_entry *entry, *tmp;
6457 mutex_lock(&qeth_dbf_list_mutex);
6458 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6459 list_del(&entry->dbf_list);
6460 debug_unregister(entry->dbf_info);
6463 mutex_unlock(&qeth_dbf_list_mutex);
6466 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6468 struct net_device *dev;
6469 struct qeth_priv *priv;
6471 switch (card->info.type) {
6472 case QETH_CARD_TYPE_IQD:
6473 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
6474 ether_setup, QETH_MAX_OUT_QUEUES, 1);
6476 case QETH_CARD_TYPE_OSM:
6477 dev = alloc_etherdev(sizeof(*priv));
6479 case QETH_CARD_TYPE_OSN:
6480 dev = alloc_netdev(sizeof(*priv), "osn%d", NET_NAME_UNKNOWN,
6484 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
6490 priv = netdev_priv(dev);
6491 priv->rx_copybreak = QETH_RX_COPYBREAK;
6492 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
6494 dev->ml_priv = card;
6495 dev->watchdog_timeo = QETH_TX_TIMEOUT;
6496 dev->min_mtu = IS_OSN(card) ? 64 : 576;
6497 /* initialized when device first goes online: */
6500 SET_NETDEV_DEV(dev, &card->gdev->dev);
6501 netif_carrier_off(dev);
6504 dev->ethtool_ops = &qeth_osn_ethtool_ops;
6506 dev->ethtool_ops = &qeth_ethtool_ops;
6507 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6508 dev->hw_features |= NETIF_F_SG;
6509 dev->vlan_features |= NETIF_F_SG;
6511 dev->features |= NETIF_F_SG;
6517 struct net_device *qeth_clone_netdev(struct net_device *orig)
6519 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6524 clone->dev_port = orig->dev_port;
6528 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6530 struct qeth_card *card;
6533 enum qeth_discipline_id enforced_disc;
6534 char dbf_name[DBF_NAME_LEN];
6536 QETH_DBF_TEXT(SETUP, 2, "probedev");
6539 if (!get_device(dev))
6542 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
6544 card = qeth_alloc_card(gdev);
6546 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
6551 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6552 dev_name(&gdev->dev));
6553 card->debug = qeth_get_dbf_entry(dbf_name);
6555 rc = qeth_add_dbf_entry(card, dbf_name);
6560 qeth_setup_card(card);
6561 card->dev = qeth_alloc_netdev(card);
6567 qeth_determine_capabilities(card);
6568 qeth_set_blkt_defaults(card);
6570 card->qdio.no_out_queues = card->dev->num_tx_queues;
6571 rc = qeth_update_from_chp_desc(card);
6576 gdev->dev.groups = qeth_osn_dev_groups;
6578 gdev->dev.groups = qeth_dev_groups;
6580 enforced_disc = qeth_enforce_discipline(card);
6581 switch (enforced_disc) {
6582 case QETH_DISCIPLINE_UNDETERMINED:
6583 gdev->dev.type = &qeth_generic_devtype;
6586 card->info.layer_enforced = true;
6587 rc = qeth_core_load_discipline(card, enforced_disc);
6591 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
6592 card->discipline->devtype;
6593 rc = card->discipline->setup(card->gdev);
6602 qeth_core_free_discipline(card);
6605 free_netdev(card->dev);
6607 qeth_core_free_card(card);
6613 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6615 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6617 QETH_CARD_TEXT(card, 2, "removedv");
6619 if (card->discipline) {
6620 card->discipline->remove(gdev);
6621 qeth_core_free_discipline(card);
6624 qeth_free_qdio_queues(card);
6626 free_netdev(card->dev);
6627 qeth_core_free_card(card);
6628 put_device(&gdev->dev);
6631 static int qeth_core_set_online(struct ccwgroup_device *gdev)
6633 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6635 enum qeth_discipline_id def_discipline;
6637 if (!card->discipline) {
6638 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6639 QETH_DISCIPLINE_LAYER2;
6640 rc = qeth_core_load_discipline(card, def_discipline);
6643 rc = card->discipline->setup(card->gdev);
6645 qeth_core_free_discipline(card);
6650 rc = qeth_set_online(card);
6655 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6657 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6659 return qeth_set_offline(card, false);
6662 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6664 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6666 qeth_set_allowed_threads(card, 0, 1);
6667 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6668 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6669 qeth_qdio_clear_card(card, 0);
6670 qeth_drain_output_queues(card);
6671 qdio_free(CARD_DDEV(card));
6674 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6679 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6682 return err ? err : count;
6684 static DRIVER_ATTR_WO(group);
6686 static struct attribute *qeth_drv_attrs[] = {
6687 &driver_attr_group.attr,
6690 static struct attribute_group qeth_drv_attr_group = {
6691 .attrs = qeth_drv_attrs,
6693 static const struct attribute_group *qeth_drv_attr_groups[] = {
6694 &qeth_drv_attr_group,
6698 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6700 .groups = qeth_drv_attr_groups,
6701 .owner = THIS_MODULE,
6704 .ccw_driver = &qeth_ccw_driver,
6705 .setup = qeth_core_probe_device,
6706 .remove = qeth_core_remove_device,
6707 .set_online = qeth_core_set_online,
6708 .set_offline = qeth_core_set_offline,
6709 .shutdown = qeth_core_shutdown,
6712 struct qeth_card *qeth_get_card_by_busid(char *bus_id)
6714 struct ccwgroup_device *gdev;
6715 struct qeth_card *card;
6717 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
6721 card = dev_get_drvdata(&gdev->dev);
6722 put_device(&gdev->dev);
6725 EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
6727 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6729 struct qeth_card *card = dev->ml_priv;
6730 struct mii_ioctl_data *mii_data;
6734 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6735 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
6737 case SIOC_QETH_GET_CARD_TYPE:
6738 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6743 mii_data = if_mii(rq);
6744 mii_data->phy_id = 0;
6747 mii_data = if_mii(rq);
6748 if (mii_data->phy_id != 0)
6751 mii_data->val_out = qeth_mdio_read(dev,
6752 mii_data->phy_id, mii_data->reg_num);
6754 case SIOC_QETH_QUERY_OAT:
6755 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
6758 if (card->discipline->do_ioctl)
6759 rc = card->discipline->do_ioctl(dev, rq, cmd);
6764 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6767 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6769 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6772 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6773 u32 *features = reply->param;
6775 if (qeth_setassparms_inspect_rc(cmd))
6778 *features = cmd->data.setassparms.data.flags_32bit;
6782 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6783 enum qeth_prot_versions prot)
6785 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6789 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6790 enum qeth_prot_versions prot, u8 *lp2lp)
6792 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6793 struct qeth_cmd_buffer *iob;
6794 struct qeth_ipa_caps caps;
6798 /* some L3 HW requires combined L3+L4 csum offload: */
6799 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6800 cstype == IPA_OUTBOUND_CHECKSUM)
6801 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6803 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6808 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6812 if ((required_features & features) != required_features) {
6813 qeth_set_csum_off(card, cstype, prot);
6817 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6818 SETASS_DATA_SIZEOF(flags_32bit),
6821 qeth_set_csum_off(card, cstype, prot);
6825 if (features & QETH_IPA_CHECKSUM_LP2LP)
6826 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6827 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6828 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6830 qeth_set_csum_off(card, cstype, prot);
6834 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6835 !qeth_ipa_caps_enabled(&caps, required_features)) {
6836 qeth_set_csum_off(card, cstype, prot);
6840 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6841 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6844 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6849 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6850 enum qeth_prot_versions prot, u8 *lp2lp)
6852 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
6853 qeth_set_csum_off(card, cstype, prot);
6856 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6859 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6860 struct qeth_tso_start_data *tso_data = reply->param;
6862 if (qeth_setassparms_inspect_rc(cmd))
6865 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6866 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6870 static int qeth_set_tso_off(struct qeth_card *card,
6871 enum qeth_prot_versions prot)
6873 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6874 IPA_CMD_ASS_STOP, NULL, prot);
6877 static int qeth_set_tso_on(struct qeth_card *card,
6878 enum qeth_prot_versions prot)
6880 struct qeth_tso_start_data tso_data;
6881 struct qeth_cmd_buffer *iob;
6882 struct qeth_ipa_caps caps;
6885 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6886 IPA_CMD_ASS_START, 0, prot);
6890 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6894 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6895 qeth_set_tso_off(card, prot);
6899 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6901 SETASS_DATA_SIZEOF(caps), prot);
6903 qeth_set_tso_off(card, prot);
6907 /* enable TSO capability */
6908 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6909 QETH_IPA_LARGE_SEND_TCP;
6910 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6912 qeth_set_tso_off(card, prot);
6916 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6917 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6918 qeth_set_tso_off(card, prot);
6922 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6927 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6928 enum qeth_prot_versions prot)
6930 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6933 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6935 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6938 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6939 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6940 QETH_PROT_IPV4, NULL);
6941 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6942 /* no/one Offload Assist available, so the rc is trivial */
6945 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6946 QETH_PROT_IPV6, NULL);
6949 /* enable: success if any Assist is active */
6950 return (rc_ipv6) ? rc_ipv4 : 0;
6952 /* disable: failure if any Assist is still active */
6953 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6957 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6958 * @dev: a net_device
6960 void qeth_enable_hw_features(struct net_device *dev)
6962 struct qeth_card *card = dev->ml_priv;
6963 netdev_features_t features;
6965 features = dev->features;
6966 /* force-off any feature that might need an IPA sequence.
6967 * netdev_update_features() will restart them.
6969 dev->features &= ~dev->hw_features;
6970 /* toggle VLAN filter, so that VIDs are re-programmed: */
6971 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6972 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6973 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6975 netdev_update_features(dev);
6976 if (features != dev->features)
6977 dev_warn(&card->gdev->dev,
6978 "Device recovery failed to restore all offload features\n");
6980 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6982 static void qeth_check_restricted_features(struct qeth_card *card,
6983 netdev_features_t changed,
6984 netdev_features_t actual)
6986 netdev_features_t ipv6_features = NETIF_F_TSO6;
6987 netdev_features_t ipv4_features = NETIF_F_TSO;
6989 if (!card->info.has_lp2lp_cso_v6)
6990 ipv6_features |= NETIF_F_IPV6_CSUM;
6991 if (!card->info.has_lp2lp_cso_v4)
6992 ipv4_features |= NETIF_F_IP_CSUM;
6994 if ((changed & ipv6_features) && !(actual & ipv6_features))
6995 qeth_flush_local_addrs6(card);
6996 if ((changed & ipv4_features) && !(actual & ipv4_features))
6997 qeth_flush_local_addrs4(card);
7000 int qeth_set_features(struct net_device *dev, netdev_features_t features)
7002 struct qeth_card *card = dev->ml_priv;
7003 netdev_features_t changed = dev->features ^ features;
7006 QETH_CARD_TEXT(card, 2, "setfeat");
7007 QETH_CARD_HEX(card, 2, &features, sizeof(features));
7009 if ((changed & NETIF_F_IP_CSUM)) {
7010 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
7011 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
7012 &card->info.has_lp2lp_cso_v4);
7014 changed ^= NETIF_F_IP_CSUM;
7016 if (changed & NETIF_F_IPV6_CSUM) {
7017 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
7018 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
7019 &card->info.has_lp2lp_cso_v6);
7021 changed ^= NETIF_F_IPV6_CSUM;
7023 if (changed & NETIF_F_RXCSUM) {
7024 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
7026 changed ^= NETIF_F_RXCSUM;
7028 if (changed & NETIF_F_TSO) {
7029 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
7032 changed ^= NETIF_F_TSO;
7034 if (changed & NETIF_F_TSO6) {
7035 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
7038 changed ^= NETIF_F_TSO6;
7041 qeth_check_restricted_features(card, dev->features ^ features,
7042 dev->features ^ changed);
7044 /* everything changed successfully? */
7045 if ((dev->features ^ features) == changed)
7047 /* something went wrong. save changed features and return error */
7048 dev->features ^= changed;
7051 EXPORT_SYMBOL_GPL(qeth_set_features);
7053 netdev_features_t qeth_fix_features(struct net_device *dev,
7054 netdev_features_t features)
7056 struct qeth_card *card = dev->ml_priv;
7058 QETH_CARD_TEXT(card, 2, "fixfeat");
7059 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
7060 features &= ~NETIF_F_IP_CSUM;
7061 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
7062 features &= ~NETIF_F_IPV6_CSUM;
7063 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
7064 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
7065 features &= ~NETIF_F_RXCSUM;
7066 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
7067 features &= ~NETIF_F_TSO;
7068 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
7069 features &= ~NETIF_F_TSO6;
7071 QETH_CARD_HEX(card, 2, &features, sizeof(features));
7074 EXPORT_SYMBOL_GPL(qeth_fix_features);
7076 netdev_features_t qeth_features_check(struct sk_buff *skb,
7077 struct net_device *dev,
7078 netdev_features_t features)
7080 struct qeth_card *card = dev->ml_priv;
7082 /* Traffic with local next-hop is not eligible for some offloads: */
7083 if (skb->ip_summed == CHECKSUM_PARTIAL &&
7084 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
7085 netdev_features_t restricted = 0;
7087 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
7088 restricted |= NETIF_F_ALL_TSO;
7090 switch (vlan_get_protocol(skb)) {
7091 case htons(ETH_P_IP):
7092 if (!card->info.has_lp2lp_cso_v4)
7093 restricted |= NETIF_F_IP_CSUM;
7095 if (restricted && qeth_next_hop_is_local_v4(card, skb))
7096 features &= ~restricted;
7098 case htons(ETH_P_IPV6):
7099 if (!card->info.has_lp2lp_cso_v6)
7100 restricted |= NETIF_F_IPV6_CSUM;
7102 if (restricted && qeth_next_hop_is_local_v6(card, skb))
7103 features &= ~restricted;
7110 /* GSO segmentation builds skbs with
7111 * a (small) linear part for the headers, and
7112 * page frags for the data.
7113 * Compared to a linear skb, the header-only part consumes an
7114 * additional buffer element. This reduces buffer utilization, and
7115 * hurts throughput. So compress small segments into one element.
7117 if (netif_needs_gso(skb, features)) {
7118 /* match skb_segment(): */
7119 unsigned int doffset = skb->data - skb_mac_header(skb);
7120 unsigned int hsize = skb_shinfo(skb)->gso_size;
7121 unsigned int hroom = skb_headroom(skb);
7123 /* linearize only if resulting skb allocations are order-0: */
7124 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
7125 features &= ~NETIF_F_SG;
7128 return vlan_features_check(skb, features);
7130 EXPORT_SYMBOL_GPL(qeth_features_check);
7132 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
7134 struct qeth_card *card = dev->ml_priv;
7135 struct qeth_qdio_out_q *queue;
7138 QETH_CARD_TEXT(card, 5, "getstat");
7140 stats->rx_packets = card->stats.rx_packets;
7141 stats->rx_bytes = card->stats.rx_bytes;
7142 stats->rx_errors = card->stats.rx_length_errors +
7143 card->stats.rx_frame_errors +
7144 card->stats.rx_fifo_errors;
7145 stats->rx_dropped = card->stats.rx_dropped_nomem +
7146 card->stats.rx_dropped_notsupp +
7147 card->stats.rx_dropped_runt;
7148 stats->multicast = card->stats.rx_multicast;
7149 stats->rx_length_errors = card->stats.rx_length_errors;
7150 stats->rx_frame_errors = card->stats.rx_frame_errors;
7151 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
7153 for (i = 0; i < card->qdio.no_out_queues; i++) {
7154 queue = card->qdio.out_qs[i];
7156 stats->tx_packets += queue->stats.tx_packets;
7157 stats->tx_bytes += queue->stats.tx_bytes;
7158 stats->tx_errors += queue->stats.tx_errors;
7159 stats->tx_dropped += queue->stats.tx_dropped;
7162 EXPORT_SYMBOL_GPL(qeth_get_stats64);
7164 #define TC_IQD_UCAST 0
7165 static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
7166 unsigned int ucast_txqs)
7170 /* IQD requires mcast traffic to be placed on a dedicated queue, and
7171 * qeth_iqd_select_queue() deals with this.
7172 * For unicast traffic, we defer the queue selection to the stack.
7173 * By installing a trivial prio map that spans over only the unicast
7174 * queues, we can encourage the stack to spread the ucast traffic evenly
7175 * without selecting the mcast queue.
7178 /* One traffic class, spanning over all active ucast queues: */
7179 netdev_set_num_tc(dev, 1);
7180 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
7181 QETH_IQD_MIN_UCAST_TXQ);
7183 /* Map all priorities to this traffic class: */
7184 for (prio = 0; prio <= TC_BITMASK; prio++)
7185 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7188 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7190 struct net_device *dev = card->dev;
7193 /* Per netif_setup_tc(), adjust the mapping first: */
7195 qeth_iqd_set_prio_tc_map(dev, count - 1);
7197 rc = netif_set_real_num_tx_queues(dev, count);
7199 if (rc && IS_IQD(card))
7200 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7204 EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
7206 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7207 u8 cast_type, struct net_device *sb_dev)
7211 if (cast_type != RTN_UNICAST)
7212 return QETH_IQD_MCAST_TXQ;
7213 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7214 return QETH_IQD_MIN_UCAST_TXQ;
7216 txq = netdev_pick_tx(dev, skb, sb_dev);
7217 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
7219 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7221 int qeth_open(struct net_device *dev)
7223 struct qeth_card *card = dev->ml_priv;
7225 QETH_CARD_TEXT(card, 4, "qethopen");
7227 card->data.state = CH_STATE_UP;
7228 netif_tx_start_all_queues(dev);
7230 napi_enable(&card->napi);
7232 napi_schedule(&card->napi);
7234 struct qeth_qdio_out_q *queue;
7237 qeth_for_each_output_queue(card, queue, i) {
7238 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
7240 napi_enable(&queue->napi);
7241 napi_schedule(&queue->napi);
7244 /* kick-start the NAPI softirq: */
7248 EXPORT_SYMBOL_GPL(qeth_open);
7250 int qeth_stop(struct net_device *dev)
7252 struct qeth_card *card = dev->ml_priv;
7254 QETH_CARD_TEXT(card, 4, "qethstop");
7256 struct qeth_qdio_out_q *queue;
7259 /* Quiesce the NAPI instances: */
7260 qeth_for_each_output_queue(card, queue, i)
7261 napi_disable(&queue->napi);
7263 /* Stop .ndo_start_xmit, might still access queue->napi. */
7264 netif_tx_disable(dev);
7266 qeth_for_each_output_queue(card, queue, i) {
7267 del_timer_sync(&queue->timer);
7268 /* Queues may get re-allocated, so remove the NAPIs. */
7269 netif_napi_del(&queue->napi);
7272 netif_tx_disable(dev);
7275 napi_disable(&card->napi);
7276 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7277 qdio_stop_irq(CARD_DDEV(card));
7281 EXPORT_SYMBOL_GPL(qeth_stop);
7283 static int __init qeth_core_init(void)
7287 pr_info("loading core functions\n");
7289 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7291 rc = qeth_register_dbf_views();
7294 qeth_core_root_dev = root_device_register("qeth");
7295 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
7298 qeth_core_header_cache =
7299 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7300 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7302 if (!qeth_core_header_cache) {
7306 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7307 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7308 if (!qeth_qdio_outbuf_cache) {
7312 rc = ccw_driver_register(&qeth_ccw_driver);
7315 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7322 ccw_driver_unregister(&qeth_ccw_driver);
7324 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7326 kmem_cache_destroy(qeth_core_header_cache);
7328 root_device_unregister(qeth_core_root_dev);
7330 qeth_unregister_dbf_views();
7332 debugfs_remove_recursive(qeth_debugfs_root);
7333 pr_err("Initializing the qeth device driver failed\n");
7337 static void __exit qeth_core_exit(void)
7339 qeth_clear_dbf_list();
7340 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7341 ccw_driver_unregister(&qeth_ccw_driver);
7342 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7343 kmem_cache_destroy(qeth_core_header_cache);
7344 root_device_unregister(qeth_core_root_dev);
7345 qeth_unregister_dbf_views();
7346 debugfs_remove_recursive(qeth_debugfs_root);
7347 pr_info("core functions removed\n");
7350 module_init(qeth_core_init);
7351 module_exit(qeth_core_exit);
7352 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7353 MODULE_DESCRIPTION("qeth core functions");
7354 MODULE_LICENSE("GPL");