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 static struct kmem_cache *qeth_core_header_cache;
61 static struct kmem_cache *qeth_qdio_outbuf_cache;
62 static struct kmem_cache *qeth_qaob_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);
74 static const char *qeth_get_cardname(struct qeth_card *card)
76 if (IS_VM_NIC(card)) {
77 switch (card->info.type) {
78 case QETH_CARD_TYPE_OSD:
79 return " Virtual NIC QDIO";
80 case QETH_CARD_TYPE_IQD:
81 return " Virtual NIC Hiper";
82 case QETH_CARD_TYPE_OSM:
83 return " Virtual NIC QDIO - OSM";
84 case QETH_CARD_TYPE_OSX:
85 return " Virtual NIC QDIO - OSX";
90 switch (card->info.type) {
91 case QETH_CARD_TYPE_OSD:
92 return " OSD Express";
93 case QETH_CARD_TYPE_IQD:
94 return " HiperSockets";
95 case QETH_CARD_TYPE_OSM:
97 case QETH_CARD_TYPE_OSX:
106 /* max length to be returned: 14 */
107 const char *qeth_get_cardname_short(struct qeth_card *card)
109 if (IS_VM_NIC(card)) {
110 switch (card->info.type) {
111 case QETH_CARD_TYPE_OSD:
112 return "Virt.NIC QDIO";
113 case QETH_CARD_TYPE_IQD:
114 return "Virt.NIC Hiper";
115 case QETH_CARD_TYPE_OSM:
116 return "Virt.NIC OSM";
117 case QETH_CARD_TYPE_OSX:
118 return "Virt.NIC OSX";
123 switch (card->info.type) {
124 case QETH_CARD_TYPE_OSD:
125 switch (card->info.link_type) {
126 case QETH_LINK_TYPE_FAST_ETH:
128 case QETH_LINK_TYPE_HSTR:
130 case QETH_LINK_TYPE_GBIT_ETH:
132 case QETH_LINK_TYPE_10GBIT_ETH:
134 case QETH_LINK_TYPE_25GBIT_ETH:
136 case QETH_LINK_TYPE_LANE_ETH100:
137 return "OSD_FE_LANE";
138 case QETH_LINK_TYPE_LANE_TR:
139 return "OSD_TR_LANE";
140 case QETH_LINK_TYPE_LANE_ETH1000:
141 return "OSD_GbE_LANE";
142 case QETH_LINK_TYPE_LANE:
143 return "OSD_ATM_LANE";
145 return "OSD_Express";
147 case QETH_CARD_TYPE_IQD:
148 return "HiperSockets";
149 case QETH_CARD_TYPE_OSM:
151 case QETH_CARD_TYPE_OSX:
160 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
161 int clear_start_mask)
165 spin_lock_irqsave(&card->thread_mask_lock, flags);
166 card->thread_allowed_mask = threads;
167 if (clear_start_mask)
168 card->thread_start_mask &= threads;
169 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
170 wake_up(&card->wait_q);
172 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
174 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
179 spin_lock_irqsave(&card->thread_mask_lock, flags);
180 rc = (card->thread_running_mask & threads);
181 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
184 EXPORT_SYMBOL_GPL(qeth_threads_running);
186 static void qeth_clear_working_pool_list(struct qeth_card *card)
188 struct qeth_buffer_pool_entry *pool_entry, *tmp;
189 struct qeth_qdio_q *queue = card->qdio.in_q;
192 QETH_CARD_TEXT(card, 5, "clwrklst");
193 list_for_each_entry_safe(pool_entry, tmp,
194 &card->qdio.in_buf_pool.entry_list, list)
195 list_del(&pool_entry->list);
197 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
198 queue->bufs[i].pool_entry = NULL;
201 static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
205 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
206 if (entry->elements[i])
207 __free_page(entry->elements[i]);
213 static void qeth_free_buffer_pool(struct qeth_card *card)
215 struct qeth_buffer_pool_entry *entry, *tmp;
217 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
219 list_del(&entry->init_list);
220 qeth_free_pool_entry(entry);
224 static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
226 struct qeth_buffer_pool_entry *entry;
229 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
233 for (i = 0; i < pages; i++) {
234 entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
236 if (!entry->elements[i]) {
237 qeth_free_pool_entry(entry);
245 static int qeth_alloc_buffer_pool(struct qeth_card *card)
247 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
250 QETH_CARD_TEXT(card, 5, "alocpool");
251 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
252 struct qeth_buffer_pool_entry *entry;
254 entry = qeth_alloc_pool_entry(buf_elements);
256 qeth_free_buffer_pool(card);
260 list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
265 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
267 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
268 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
269 struct qeth_buffer_pool_entry *entry, *tmp;
270 int delta = count - pool->buf_count;
273 QETH_CARD_TEXT(card, 2, "realcbp");
275 /* Defer until pool is allocated: */
276 if (list_empty(&pool->entry_list))
279 /* Remove entries from the pool: */
281 entry = list_first_entry(&pool->entry_list,
282 struct qeth_buffer_pool_entry,
284 list_del(&entry->init_list);
285 qeth_free_pool_entry(entry);
290 /* Allocate additional entries: */
292 entry = qeth_alloc_pool_entry(buf_elements);
294 list_for_each_entry_safe(entry, tmp, &entries,
296 list_del(&entry->init_list);
297 qeth_free_pool_entry(entry);
303 list_add(&entry->init_list, &entries);
308 list_splice(&entries, &pool->entry_list);
311 card->qdio.in_buf_pool.buf_count = count;
312 pool->buf_count = count;
315 EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
317 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
322 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
326 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
328 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
334 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
339 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
340 q->bufs[i].buffer = q->qdio_bufs[i];
342 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
346 static int qeth_cq_init(struct qeth_card *card)
350 if (card->options.cq == QETH_CQ_ENABLED) {
351 QETH_CARD_TEXT(card, 2, "cqinit");
352 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
353 QDIO_MAX_BUFFERS_PER_Q);
354 card->qdio.c_q->next_buf_to_init = 127;
356 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 1, 0, 127);
358 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
367 static int qeth_alloc_cq(struct qeth_card *card)
369 if (card->options.cq == QETH_CQ_ENABLED) {
370 QETH_CARD_TEXT(card, 2, "cqon");
371 card->qdio.c_q = qeth_alloc_qdio_queue();
372 if (!card->qdio.c_q) {
373 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
377 QETH_CARD_TEXT(card, 2, "nocq");
378 card->qdio.c_q = NULL;
383 static void qeth_free_cq(struct qeth_card *card)
385 if (card->qdio.c_q) {
386 qeth_free_qdio_queue(card->qdio.c_q);
387 card->qdio.c_q = NULL;
391 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
394 enum iucv_tx_notify n;
398 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
404 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
405 TX_NOTIFY_UNREACHABLE;
408 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
409 TX_NOTIFY_GENERALERROR;
416 static void qeth_put_cmd(struct qeth_cmd_buffer *iob)
418 if (refcount_dec_and_test(&iob->ref_count)) {
423 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
426 ccw->cmd_code = cmd_code;
427 ccw->flags = flags | CCW_FLAG_SLI;
429 ccw->cda = (__u32)virt_to_phys(data);
432 static int __qeth_issue_next_read(struct qeth_card *card)
434 struct qeth_cmd_buffer *iob = card->read_cmd;
435 struct qeth_channel *channel = iob->channel;
436 struct ccw1 *ccw = __ccw_from_cmd(iob);
439 QETH_CARD_TEXT(card, 5, "issnxrd");
440 if (channel->state != CH_STATE_UP)
443 memset(iob->data, 0, iob->length);
444 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
445 iob->callback = qeth_issue_next_read_cb;
446 /* keep the cmd alive after completion: */
449 QETH_CARD_TEXT(card, 6, "noirqpnd");
450 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
452 channel->active_cmd = iob;
454 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
455 rc, CARD_DEVID(card));
456 qeth_unlock_channel(card, channel);
458 card->read_or_write_problem = 1;
459 qeth_schedule_recovery(card);
464 static int qeth_issue_next_read(struct qeth_card *card)
468 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
469 ret = __qeth_issue_next_read(card);
470 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
475 static void qeth_enqueue_cmd(struct qeth_card *card,
476 struct qeth_cmd_buffer *iob)
478 spin_lock_irq(&card->lock);
479 list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
480 spin_unlock_irq(&card->lock);
483 static void qeth_dequeue_cmd(struct qeth_card *card,
484 struct qeth_cmd_buffer *iob)
486 spin_lock_irq(&card->lock);
487 list_del(&iob->list_entry);
488 spin_unlock_irq(&card->lock);
491 static void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
494 complete(&iob->done);
497 static void qeth_flush_local_addrs4(struct qeth_card *card)
499 struct qeth_local_addr *addr;
500 struct hlist_node *tmp;
503 spin_lock_irq(&card->local_addrs4_lock);
504 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
505 hash_del_rcu(&addr->hnode);
506 kfree_rcu(addr, rcu);
508 spin_unlock_irq(&card->local_addrs4_lock);
511 static void qeth_flush_local_addrs6(struct qeth_card *card)
513 struct qeth_local_addr *addr;
514 struct hlist_node *tmp;
517 spin_lock_irq(&card->local_addrs6_lock);
518 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
519 hash_del_rcu(&addr->hnode);
520 kfree_rcu(addr, rcu);
522 spin_unlock_irq(&card->local_addrs6_lock);
525 static void qeth_flush_local_addrs(struct qeth_card *card)
527 qeth_flush_local_addrs4(card);
528 qeth_flush_local_addrs6(card);
531 static void qeth_add_local_addrs4(struct qeth_card *card,
532 struct qeth_ipacmd_local_addrs4 *cmd)
536 if (cmd->addr_length !=
537 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
538 dev_err_ratelimited(&card->gdev->dev,
539 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
544 spin_lock(&card->local_addrs4_lock);
545 for (i = 0; i < cmd->count; i++) {
546 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
547 struct qeth_local_addr *addr;
548 bool duplicate = false;
550 hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
551 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
560 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
562 dev_err(&card->gdev->dev,
563 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
564 &cmd->addrs[i].addr);
568 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
569 hash_add_rcu(card->local_addrs4, &addr->hnode, key);
571 spin_unlock(&card->local_addrs4_lock);
574 static void qeth_add_local_addrs6(struct qeth_card *card,
575 struct qeth_ipacmd_local_addrs6 *cmd)
579 if (cmd->addr_length !=
580 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
581 dev_err_ratelimited(&card->gdev->dev,
582 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
587 spin_lock(&card->local_addrs6_lock);
588 for (i = 0; i < cmd->count; i++) {
589 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
590 struct qeth_local_addr *addr;
591 bool duplicate = false;
593 hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
594 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
603 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
605 dev_err(&card->gdev->dev,
606 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
607 &cmd->addrs[i].addr);
611 addr->addr = cmd->addrs[i].addr;
612 hash_add_rcu(card->local_addrs6, &addr->hnode, key);
614 spin_unlock(&card->local_addrs6_lock);
617 static void qeth_del_local_addrs4(struct qeth_card *card,
618 struct qeth_ipacmd_local_addrs4 *cmd)
622 if (cmd->addr_length !=
623 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
624 dev_err_ratelimited(&card->gdev->dev,
625 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
630 spin_lock(&card->local_addrs4_lock);
631 for (i = 0; i < cmd->count; i++) {
632 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
633 unsigned int key = ipv4_addr_hash(addr->addr);
634 struct qeth_local_addr *tmp;
636 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
637 if (tmp->addr.s6_addr32[3] == addr->addr) {
638 hash_del_rcu(&tmp->hnode);
644 spin_unlock(&card->local_addrs4_lock);
647 static void qeth_del_local_addrs6(struct qeth_card *card,
648 struct qeth_ipacmd_local_addrs6 *cmd)
652 if (cmd->addr_length !=
653 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
654 dev_err_ratelimited(&card->gdev->dev,
655 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
660 spin_lock(&card->local_addrs6_lock);
661 for (i = 0; i < cmd->count; i++) {
662 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
663 u32 key = ipv6_addr_hash(&addr->addr);
664 struct qeth_local_addr *tmp;
666 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
667 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
668 hash_del_rcu(&tmp->hnode);
674 spin_unlock(&card->local_addrs6_lock);
677 static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
680 struct qeth_local_addr *tmp;
681 bool is_local = false;
685 if (hash_empty(card->local_addrs4))
689 next_hop = qeth_next_hop_v4_rcu(skb,
690 qeth_dst_check_rcu(skb, htons(ETH_P_IP)));
691 key = ipv4_addr_hash(next_hop);
693 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
694 if (tmp->addr.s6_addr32[3] == next_hop) {
704 static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
707 struct qeth_local_addr *tmp;
708 struct in6_addr *next_hop;
709 bool is_local = false;
712 if (hash_empty(card->local_addrs6))
716 next_hop = qeth_next_hop_v6_rcu(skb,
717 qeth_dst_check_rcu(skb, htons(ETH_P_IPV6)));
718 key = ipv6_addr_hash(next_hop);
720 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
721 if (ipv6_addr_equal(&tmp->addr, next_hop)) {
731 static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
733 struct qeth_card *card = m->private;
734 struct qeth_local_addr *tmp;
738 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
739 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
740 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
741 seq_printf(m, "%pI6c\n", &tmp->addr);
747 DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
749 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
750 struct qeth_card *card)
752 const char *ipa_name;
753 int com = cmd->hdr.command;
755 ipa_name = qeth_get_ipa_cmd_name(com);
758 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
759 ipa_name, com, CARD_DEVID(card), rc,
760 qeth_get_ipa_msg(rc));
762 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
763 ipa_name, com, CARD_DEVID(card));
766 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
767 struct qeth_ipa_cmd *cmd)
769 QETH_CARD_TEXT(card, 5, "chkipad");
771 if (IS_IPA_REPLY(cmd)) {
772 if (cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
773 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
777 /* handle unsolicited event: */
778 switch (cmd->hdr.command) {
779 case IPA_CMD_STOPLAN:
780 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
781 dev_err(&card->gdev->dev,
782 "Adjacent port of interface %s is no longer in reflective relay mode, trigger recovery\n",
783 netdev_name(card->dev));
784 /* Set offline, then probably fail to set online: */
785 qeth_schedule_recovery(card);
787 /* stay online for subsequent STARTLAN */
788 dev_warn(&card->gdev->dev,
789 "The link for interface %s on CHPID 0x%X failed\n",
790 netdev_name(card->dev), card->info.chpid);
791 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
792 netif_carrier_off(card->dev);
795 case IPA_CMD_STARTLAN:
796 dev_info(&card->gdev->dev,
797 "The link for %s on CHPID 0x%X has been restored\n",
798 netdev_name(card->dev), card->info.chpid);
799 if (card->info.hwtrap)
800 card->info.hwtrap = 2;
801 qeth_schedule_recovery(card);
803 case IPA_CMD_SETBRIDGEPORT_IQD:
804 case IPA_CMD_SETBRIDGEPORT_OSA:
805 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
806 if (card->discipline->control_event_handler(card, cmd))
809 case IPA_CMD_REGISTER_LOCAL_ADDR:
810 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
811 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
812 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
813 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
815 QETH_CARD_TEXT(card, 3, "irla");
817 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
818 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
819 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
820 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
821 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
823 QETH_CARD_TEXT(card, 3, "urla");
826 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
831 static void qeth_clear_ipacmd_list(struct qeth_card *card)
833 struct qeth_cmd_buffer *iob;
836 QETH_CARD_TEXT(card, 4, "clipalst");
838 spin_lock_irqsave(&card->lock, flags);
839 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
840 qeth_notify_cmd(iob, -ECANCELED);
841 spin_unlock_irqrestore(&card->lock, flags);
844 static int qeth_check_idx_response(struct qeth_card *card,
845 unsigned char *buffer)
847 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
848 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
849 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
851 QETH_CARD_TEXT(card, 2, "ckidxres");
852 QETH_CARD_TEXT(card, 2, " idxterm");
853 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
854 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
855 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
856 dev_err(&card->gdev->dev,
857 "The device does not support the configured transport mode\n");
858 return -EPROTONOSUPPORT;
865 static void qeth_release_buffer_cb(struct qeth_card *card,
866 struct qeth_cmd_buffer *iob,
867 unsigned int data_length)
872 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
874 qeth_notify_cmd(iob, rc);
878 static struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
880 unsigned int ccws, long timeout)
882 struct qeth_cmd_buffer *iob;
884 if (length > QETH_BUFSIZE)
887 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
891 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
892 GFP_KERNEL | GFP_DMA);
898 init_completion(&iob->done);
899 spin_lock_init(&iob->lock);
900 refcount_set(&iob->ref_count, 1);
901 iob->channel = channel;
902 iob->timeout = timeout;
903 iob->length = length;
907 static void qeth_issue_next_read_cb(struct qeth_card *card,
908 struct qeth_cmd_buffer *iob,
909 unsigned int data_length)
911 struct qeth_cmd_buffer *request = NULL;
912 struct qeth_ipa_cmd *cmd = NULL;
913 struct qeth_reply *reply = NULL;
914 struct qeth_cmd_buffer *tmp;
918 QETH_CARD_TEXT(card, 4, "sndctlcb");
919 rc = qeth_check_idx_response(card, iob->data);
924 qeth_schedule_recovery(card);
927 qeth_clear_ipacmd_list(card);
931 cmd = __ipa_reply(iob);
933 cmd = qeth_check_ipa_data(card, cmd);
938 /* match against pending cmd requests */
939 spin_lock_irqsave(&card->lock, flags);
940 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
941 if (tmp->match && tmp->match(tmp, iob)) {
943 /* take the object outside the lock */
944 qeth_get_cmd(request);
948 spin_unlock_irqrestore(&card->lock, flags);
953 reply = &request->reply;
954 if (!reply->callback) {
959 spin_lock_irqsave(&request->lock, flags);
961 /* Bail out when the requestor has already left: */
964 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
966 spin_unlock_irqrestore(&request->lock, flags);
970 qeth_notify_cmd(request, rc);
971 qeth_put_cmd(request);
973 memcpy(&card->seqno.pdu_hdr_ack,
974 QETH_PDU_HEADER_SEQ_NO(iob->data),
976 __qeth_issue_next_read(card);
981 static int qeth_set_thread_start_bit(struct qeth_card *card,
982 unsigned long thread)
987 spin_lock_irqsave(&card->thread_mask_lock, flags);
988 if (!(card->thread_allowed_mask & thread))
990 else if (card->thread_start_mask & thread)
993 card->thread_start_mask |= thread;
994 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
999 static void qeth_clear_thread_start_bit(struct qeth_card *card,
1000 unsigned long thread)
1002 unsigned long flags;
1004 spin_lock_irqsave(&card->thread_mask_lock, flags);
1005 card->thread_start_mask &= ~thread;
1006 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1007 wake_up(&card->wait_q);
1010 static void qeth_clear_thread_running_bit(struct qeth_card *card,
1011 unsigned long thread)
1013 unsigned long flags;
1015 spin_lock_irqsave(&card->thread_mask_lock, flags);
1016 card->thread_running_mask &= ~thread;
1017 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1018 wake_up_all(&card->wait_q);
1021 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1023 unsigned long flags;
1026 spin_lock_irqsave(&card->thread_mask_lock, flags);
1027 if (card->thread_start_mask & thread) {
1028 if ((card->thread_allowed_mask & thread) &&
1029 !(card->thread_running_mask & thread)) {
1031 card->thread_start_mask &= ~thread;
1032 card->thread_running_mask |= thread;
1036 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1040 static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1044 wait_event(card->wait_q,
1045 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1049 int qeth_schedule_recovery(struct qeth_card *card)
1053 QETH_CARD_TEXT(card, 2, "startrec");
1055 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1057 schedule_work(&card->kernel_thread_starter);
1062 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1068 sense = (char *) irb->ecw;
1069 cstat = irb->scsw.cmd.cstat;
1070 dstat = irb->scsw.cmd.dstat;
1072 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1073 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1074 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1075 QETH_CARD_TEXT(card, 2, "CGENCHK");
1076 dev_warn(&cdev->dev, "The qeth device driver "
1077 "failed to recover an error on the device\n");
1078 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1079 CCW_DEVID(cdev), dstat, cstat);
1080 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1085 if (dstat & DEV_STAT_UNIT_CHECK) {
1086 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1087 SENSE_RESETTING_EVENT_FLAG) {
1088 QETH_CARD_TEXT(card, 2, "REVIND");
1091 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1092 SENSE_COMMAND_REJECT_FLAG) {
1093 QETH_CARD_TEXT(card, 2, "CMDREJi");
1096 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1097 QETH_CARD_TEXT(card, 2, "AFFE");
1100 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1101 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1104 QETH_CARD_TEXT(card, 2, "DGENCHK");
1110 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
1116 switch (PTR_ERR(irb)) {
1118 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1120 QETH_CARD_TEXT(card, 2, "ckirberr");
1121 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1124 dev_warn(&cdev->dev, "A hardware operation timed out"
1125 " on the device\n");
1126 QETH_CARD_TEXT(card, 2, "ckirberr");
1127 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1130 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1131 PTR_ERR(irb), CCW_DEVID(cdev));
1132 QETH_CARD_TEXT(card, 2, "ckirberr");
1133 QETH_CARD_TEXT(card, 2, " rc???");
1134 return PTR_ERR(irb);
1138 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1143 struct qeth_cmd_buffer *iob = NULL;
1144 struct ccwgroup_device *gdev;
1145 struct qeth_channel *channel;
1146 struct qeth_card *card;
1148 /* while we hold the ccwdev lock, this stays valid: */
1149 gdev = dev_get_drvdata(&cdev->dev);
1150 card = dev_get_drvdata(&gdev->dev);
1152 QETH_CARD_TEXT(card, 5, "irq");
1154 if (card->read.ccwdev == cdev) {
1155 channel = &card->read;
1156 QETH_CARD_TEXT(card, 5, "read");
1157 } else if (card->write.ccwdev == cdev) {
1158 channel = &card->write;
1159 QETH_CARD_TEXT(card, 5, "write");
1161 channel = &card->data;
1162 QETH_CARD_TEXT(card, 5, "data");
1166 QETH_CARD_TEXT(card, 5, "irqunsol");
1167 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1168 QETH_CARD_TEXT(card, 5, "irqunexp");
1171 "Received IRQ with intparm %lx, expected %px\n",
1172 intparm, channel->active_cmd);
1173 if (channel->active_cmd)
1174 qeth_cancel_cmd(channel->active_cmd, -EIO);
1176 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1179 qeth_unlock_channel(card, channel);
1181 rc = qeth_check_irb_error(card, cdev, irb);
1183 /* IO was terminated, free its resources. */
1185 qeth_cancel_cmd(iob, rc);
1189 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
1190 channel->state = CH_STATE_STOPPED;
1191 wake_up(&card->wait_q);
1194 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
1195 channel->state = CH_STATE_HALTED;
1196 wake_up(&card->wait_q);
1199 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1200 SCSW_FCTL_HALT_FUNC))) {
1201 qeth_cancel_cmd(iob, -ECANCELED);
1205 cstat = irb->scsw.cmd.cstat;
1206 dstat = irb->scsw.cmd.dstat;
1208 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1209 (dstat & DEV_STAT_UNIT_CHECK) ||
1211 if (irb->esw.esw0.erw.cons) {
1212 dev_warn(&channel->ccwdev->dev,
1213 "The qeth device driver failed to recover "
1214 "an error on the device\n");
1215 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1216 CCW_DEVID(channel->ccwdev), cstat,
1218 print_hex_dump(KERN_WARNING, "qeth: irb ",
1219 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1220 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1221 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1224 rc = qeth_get_problem(card, cdev, irb);
1226 card->read_or_write_problem = 1;
1228 qeth_cancel_cmd(iob, rc);
1229 qeth_clear_ipacmd_list(card);
1230 qeth_schedule_recovery(card);
1237 if (irb->scsw.cmd.count > iob->length) {
1238 qeth_cancel_cmd(iob, -EIO);
1242 iob->callback(card, iob,
1243 iob->length - irb->scsw.cmd.count);
1247 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1248 struct qeth_qdio_out_buffer *buf,
1249 enum iucv_tx_notify notification)
1251 struct sk_buff *skb;
1253 skb_queue_walk(&buf->skb_list, skb) {
1254 struct sock *sk = skb->sk;
1256 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1257 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1258 if (sk && sk->sk_family == PF_IUCV)
1259 iucv_sk(sk)->sk_txnotify(sk, notification);
1263 static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1264 struct qeth_qdio_out_buffer *buf, bool error,
1267 struct sk_buff *skb;
1270 if (buf->next_element_to_fill == 0)
1273 QETH_TXQ_STAT_INC(queue, bufs);
1274 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1276 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1278 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1279 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1282 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1283 unsigned int bytes = qdisc_pkt_len(skb);
1284 bool is_tso = skb_is_gso(skb);
1285 unsigned int packets;
1287 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1289 if (skb->ip_summed == CHECKSUM_PARTIAL)
1290 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1291 if (skb_is_nonlinear(skb))
1292 QETH_TXQ_STAT_INC(queue, skbs_sg);
1294 QETH_TXQ_STAT_INC(queue, skbs_tso);
1295 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1299 napi_consume_skb(skb, budget);
1303 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1304 struct qeth_qdio_out_buffer *buf,
1305 bool error, int budget)
1309 /* is PCI flag set on buffer? */
1310 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
1311 atomic_dec(&queue->set_pci_flags_count);
1312 QETH_TXQ_STAT_INC(queue, completion_irq);
1315 qeth_tx_complete_buf(queue, buf, error, budget);
1317 for (i = 0; i < queue->max_elements; ++i) {
1318 void *data = phys_to_virt(buf->buffer->element[i].addr);
1320 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
1321 kmem_cache_free(qeth_core_header_cache, data);
1324 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1325 buf->next_element_to_fill = 0;
1328 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1331 static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1334 kmem_cache_free(qeth_qaob_cache, buf->aob);
1335 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1338 static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1339 struct qeth_qdio_out_q *queue,
1340 bool drain, int budget)
1342 struct qeth_qdio_out_buffer *buf, *tmp;
1344 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
1345 struct qeth_qaob_priv1 *priv;
1346 struct qaob *aob = buf->aob;
1347 enum iucv_tx_notify notify;
1350 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1351 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
1352 QETH_CARD_TEXT(card, 5, "fp");
1353 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1355 notify = drain ? TX_NOTIFY_GENERALERROR :
1356 qeth_compute_cq_notification(aob->aorc, 1);
1357 qeth_notify_skbs(queue, buf, notify);
1358 qeth_tx_complete_buf(queue, buf, drain, budget);
1361 i < aob->sb_count && i < queue->max_elements;
1363 void *data = phys_to_virt(aob->sba[i]);
1365 if (test_bit(i, buf->from_kmem_cache) && data)
1366 kmem_cache_free(qeth_core_header_cache,
1370 list_del(&buf->list_entry);
1371 qeth_free_out_buf(buf);
1376 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1380 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
1382 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1386 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1388 qeth_free_out_buf(q->bufs[j]);
1394 static void qeth_drain_output_queues(struct qeth_card *card)
1398 QETH_CARD_TEXT(card, 2, "clearqdbf");
1399 /* clear outbound buffers to free skbs */
1400 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1401 if (card->qdio.out_qs[i])
1402 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1406 static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1408 unsigned int max = single ? 1 : card->dev->num_tx_queues;
1410 if (card->qdio.no_out_queues == max)
1413 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1414 qeth_free_qdio_queues(card);
1416 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
1417 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1419 card->qdio.no_out_queues = max;
1422 static int qeth_update_from_chp_desc(struct qeth_card *card)
1424 struct ccw_device *ccwdev;
1425 struct channel_path_desc_fmt0 *chp_dsc;
1427 QETH_CARD_TEXT(card, 2, "chp_desc");
1429 ccwdev = card->data.ccwdev;
1430 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1434 card->info.func_level = 0x4100 + chp_dsc->desc;
1436 if (IS_OSD(card) || IS_OSX(card))
1437 /* CHPP field bit 6 == 1 -> single queue */
1438 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1441 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1442 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1446 static void qeth_init_qdio_info(struct qeth_card *card)
1448 QETH_CARD_TEXT(card, 4, "intqdinf");
1449 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1450 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1451 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1454 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1456 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1458 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1459 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1460 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1461 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1464 static void qeth_set_initial_options(struct qeth_card *card)
1466 card->options.route4.type = NO_ROUTER;
1467 card->options.route6.type = NO_ROUTER;
1468 card->options.isolation = ISOLATION_MODE_NONE;
1469 card->options.cq = QETH_CQ_DISABLED;
1470 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1473 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1475 unsigned long flags;
1478 spin_lock_irqsave(&card->thread_mask_lock, flags);
1479 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1480 (u8) card->thread_start_mask,
1481 (u8) card->thread_allowed_mask,
1482 (u8) card->thread_running_mask);
1483 rc = (card->thread_start_mask & thread);
1484 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1488 static int qeth_do_reset(void *data);
1489 static void qeth_start_kernel_thread(struct work_struct *work)
1491 struct task_struct *ts;
1492 struct qeth_card *card = container_of(work, struct qeth_card,
1493 kernel_thread_starter);
1494 QETH_CARD_TEXT(card, 2, "strthrd");
1496 if (card->read.state != CH_STATE_UP &&
1497 card->write.state != CH_STATE_UP)
1499 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1500 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
1502 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1503 qeth_clear_thread_running_bit(card,
1504 QETH_RECOVER_THREAD);
1509 static void qeth_buffer_reclaim_work(struct work_struct *);
1510 static void qeth_setup_card(struct qeth_card *card)
1512 QETH_CARD_TEXT(card, 2, "setupcrd");
1514 card->info.type = CARD_RDEV(card)->id.driver_info;
1515 card->state = CARD_STATE_DOWN;
1516 spin_lock_init(&card->lock);
1517 spin_lock_init(&card->thread_mask_lock);
1518 mutex_init(&card->conf_mutex);
1519 mutex_init(&card->discipline_mutex);
1520 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1521 INIT_LIST_HEAD(&card->cmd_waiter_list);
1522 init_waitqueue_head(&card->wait_q);
1523 qeth_set_initial_options(card);
1524 /* IP address takeover */
1525 INIT_LIST_HEAD(&card->ipato.entries);
1526 qeth_init_qdio_info(card);
1527 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1528 hash_init(card->rx_mode_addrs);
1529 hash_init(card->local_addrs4);
1530 hash_init(card->local_addrs6);
1531 spin_lock_init(&card->local_addrs4_lock);
1532 spin_lock_init(&card->local_addrs6_lock);
1535 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1537 struct qeth_card *card = container_of(slr, struct qeth_card,
1538 qeth_service_level);
1539 if (card->info.mcl_level[0])
1540 seq_printf(m, "qeth: %s firmware level %s\n",
1541 CARD_BUS_ID(card), card->info.mcl_level);
1544 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1546 struct qeth_card *card;
1548 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1549 card = kzalloc(sizeof(*card), GFP_KERNEL);
1552 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1555 dev_set_drvdata(&gdev->dev, card);
1556 CARD_RDEV(card) = gdev->cdev[0];
1557 CARD_WDEV(card) = gdev->cdev[1];
1558 CARD_DDEV(card) = gdev->cdev[2];
1560 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1561 dev_name(&gdev->dev));
1562 if (!card->event_wq)
1565 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1566 if (!card->read_cmd)
1569 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1571 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1572 &qeth_debugfs_local_addr_fops);
1574 card->qeth_service_level.seq_print = qeth_core_sl_print;
1575 register_service_level(&card->qeth_service_level);
1579 destroy_workqueue(card->event_wq);
1581 dev_set_drvdata(&gdev->dev, NULL);
1587 static int qeth_clear_channel(struct qeth_card *card,
1588 struct qeth_channel *channel)
1592 QETH_CARD_TEXT(card, 3, "clearch");
1593 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1594 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1595 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1599 rc = wait_event_interruptible_timeout(card->wait_q,
1600 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1601 if (rc == -ERESTARTSYS)
1603 if (channel->state != CH_STATE_STOPPED)
1605 channel->state = CH_STATE_DOWN;
1609 static int qeth_halt_channel(struct qeth_card *card,
1610 struct qeth_channel *channel)
1614 QETH_CARD_TEXT(card, 3, "haltch");
1615 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1616 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1617 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1621 rc = wait_event_interruptible_timeout(card->wait_q,
1622 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1623 if (rc == -ERESTARTSYS)
1625 if (channel->state != CH_STATE_HALTED)
1630 static int qeth_stop_channel(struct qeth_channel *channel)
1632 struct ccw_device *cdev = channel->ccwdev;
1635 rc = ccw_device_set_offline(cdev);
1637 spin_lock_irq(get_ccwdev_lock(cdev));
1638 if (channel->active_cmd)
1639 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1640 channel->active_cmd);
1642 cdev->handler = NULL;
1643 spin_unlock_irq(get_ccwdev_lock(cdev));
1648 static int qeth_start_channel(struct qeth_channel *channel)
1650 struct ccw_device *cdev = channel->ccwdev;
1653 channel->state = CH_STATE_DOWN;
1654 xchg(&channel->active_cmd, NULL);
1656 spin_lock_irq(get_ccwdev_lock(cdev));
1657 cdev->handler = qeth_irq;
1658 spin_unlock_irq(get_ccwdev_lock(cdev));
1660 rc = ccw_device_set_online(cdev);
1667 spin_lock_irq(get_ccwdev_lock(cdev));
1668 cdev->handler = NULL;
1669 spin_unlock_irq(get_ccwdev_lock(cdev));
1673 static int qeth_halt_channels(struct qeth_card *card)
1675 int rc1 = 0, rc2 = 0, rc3 = 0;
1677 QETH_CARD_TEXT(card, 3, "haltchs");
1678 rc1 = qeth_halt_channel(card, &card->read);
1679 rc2 = qeth_halt_channel(card, &card->write);
1680 rc3 = qeth_halt_channel(card, &card->data);
1688 static int qeth_clear_channels(struct qeth_card *card)
1690 int rc1 = 0, rc2 = 0, rc3 = 0;
1692 QETH_CARD_TEXT(card, 3, "clearchs");
1693 rc1 = qeth_clear_channel(card, &card->read);
1694 rc2 = qeth_clear_channel(card, &card->write);
1695 rc3 = qeth_clear_channel(card, &card->data);
1703 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1707 QETH_CARD_TEXT(card, 3, "clhacrd");
1710 rc = qeth_halt_channels(card);
1713 return qeth_clear_channels(card);
1716 static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1720 QETH_CARD_TEXT(card, 3, "qdioclr");
1721 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1722 QETH_QDIO_CLEANING)) {
1723 case QETH_QDIO_ESTABLISHED:
1725 rc = qdio_shutdown(CARD_DDEV(card),
1726 QDIO_FLAG_CLEANUP_USING_HALT);
1728 rc = qdio_shutdown(CARD_DDEV(card),
1729 QDIO_FLAG_CLEANUP_USING_CLEAR);
1731 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1732 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1734 case QETH_QDIO_CLEANING:
1739 rc = qeth_clear_halt_card(card, use_halt);
1741 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1745 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1747 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1748 struct diag26c_vnic_resp *response = NULL;
1749 struct diag26c_vnic_req *request = NULL;
1750 struct ccw_dev_id id;
1754 QETH_CARD_TEXT(card, 2, "vmlayer");
1756 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1760 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1761 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1762 if (!request || !response) {
1767 ccw_device_get_id(CARD_RDEV(card), &id);
1768 request->resp_buf_len = sizeof(*response);
1769 request->resp_version = DIAG26C_VERSION6_VM65918;
1770 request->req_format = DIAG26C_VNIC_INFO;
1772 memcpy(&request->sys_name, userid, 8);
1773 request->devno = id.devno;
1775 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1776 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1777 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1780 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1782 if (request->resp_buf_len < sizeof(*response) ||
1783 response->version != request->resp_version) {
1788 if (response->protocol == VNIC_INFO_PROT_L2)
1789 disc = QETH_DISCIPLINE_LAYER2;
1790 else if (response->protocol == VNIC_INFO_PROT_L3)
1791 disc = QETH_DISCIPLINE_LAYER3;
1797 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1801 /* Determine whether the device requires a specific layer discipline */
1802 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1804 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1807 disc = QETH_DISCIPLINE_LAYER2;
1808 else if (IS_VM_NIC(card))
1809 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1810 qeth_vm_detect_layer(card);
1813 case QETH_DISCIPLINE_LAYER2:
1814 QETH_CARD_TEXT(card, 3, "force l2");
1816 case QETH_DISCIPLINE_LAYER3:
1817 QETH_CARD_TEXT(card, 3, "force l3");
1820 QETH_CARD_TEXT(card, 3, "force no");
1826 static void qeth_set_blkt_defaults(struct qeth_card *card)
1828 QETH_CARD_TEXT(card, 2, "cfgblkt");
1830 if (card->info.use_v1_blkt) {
1831 card->info.blkt.time_total = 0;
1832 card->info.blkt.inter_packet = 0;
1833 card->info.blkt.inter_packet_jumbo = 0;
1835 card->info.blkt.time_total = 250;
1836 card->info.blkt.inter_packet = 5;
1837 card->info.blkt.inter_packet_jumbo = 15;
1841 static void qeth_idx_init(struct qeth_card *card)
1843 memset(&card->seqno, 0, sizeof(card->seqno));
1845 card->token.issuer_rm_w = 0x00010103UL;
1846 card->token.cm_filter_w = 0x00010108UL;
1847 card->token.cm_connection_w = 0x0001010aUL;
1848 card->token.ulp_filter_w = 0x0001010bUL;
1849 card->token.ulp_connection_w = 0x0001010dUL;
1851 switch (card->info.type) {
1852 case QETH_CARD_TYPE_IQD:
1853 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1855 case QETH_CARD_TYPE_OSD:
1856 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1863 static void qeth_idx_finalize_cmd(struct qeth_card *card,
1864 struct qeth_cmd_buffer *iob)
1866 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1867 QETH_SEQ_NO_LENGTH);
1868 if (iob->channel == &card->write)
1869 card->seqno.trans_hdr++;
1872 static int qeth_peer_func_level(int level)
1874 if ((level & 0xff) == 8)
1875 return (level & 0xff) + 0x400;
1876 if (((level >> 8) & 3) == 1)
1877 return (level & 0xff) + 0x200;
1881 static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1882 struct qeth_cmd_buffer *iob)
1884 qeth_idx_finalize_cmd(card, iob);
1886 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1887 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1888 card->seqno.pdu_hdr++;
1889 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1890 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1892 iob->callback = qeth_release_buffer_cb;
1895 static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1896 struct qeth_cmd_buffer *reply)
1898 /* MPC cmds are issued strictly in sequence. */
1899 return !IS_IPA(reply->data);
1902 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1904 unsigned int data_length)
1906 struct qeth_cmd_buffer *iob;
1908 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1912 memcpy(iob->data, data, data_length);
1913 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1915 iob->finalize = qeth_mpc_finalize_cmd;
1916 iob->match = qeth_mpc_match_reply;
1921 * qeth_send_control_data() - send control command to the card
1922 * @card: qeth_card structure pointer
1923 * @iob: qeth_cmd_buffer pointer
1924 * @reply_cb: callback function pointer
1925 * cb_card: pointer to the qeth_card structure
1926 * cb_reply: pointer to the qeth_reply structure
1927 * cb_cmd: pointer to the original iob for non-IPA
1928 * commands, or to the qeth_ipa_cmd structure
1929 * for the IPA commands.
1930 * @reply_param: private pointer passed to the callback
1932 * Callback function gets called one or more times, with cb_cmd
1933 * pointing to the response returned by the hardware. Callback
1934 * function must return
1935 * > 0 if more reply blocks are expected,
1936 * 0 if the last or only reply block is received, and
1938 * Callback function can get the value of the reply_param pointer from the
1939 * field 'param' of the structure qeth_reply.
1942 static int qeth_send_control_data(struct qeth_card *card,
1943 struct qeth_cmd_buffer *iob,
1944 int (*reply_cb)(struct qeth_card *cb_card,
1945 struct qeth_reply *cb_reply,
1946 unsigned long cb_cmd),
1949 struct qeth_channel *channel = iob->channel;
1950 struct qeth_reply *reply = &iob->reply;
1951 long timeout = iob->timeout;
1954 QETH_CARD_TEXT(card, 2, "sendctl");
1956 reply->callback = reply_cb;
1957 reply->param = reply_param;
1959 timeout = wait_event_interruptible_timeout(card->wait_q,
1960 qeth_trylock_channel(channel, iob),
1964 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1968 iob->finalize(card, iob);
1969 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
1971 qeth_enqueue_cmd(card, iob);
1973 /* This pairs with iob->callback, and keeps the iob alive after IO: */
1976 QETH_CARD_TEXT(card, 6, "noirqpnd");
1977 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1978 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
1979 (addr_t) iob, 0, 0, timeout);
1980 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1982 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1983 CARD_DEVID(card), rc);
1984 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1985 qeth_dequeue_cmd(card, iob);
1987 qeth_unlock_channel(card, channel);
1991 timeout = wait_for_completion_interruptible_timeout(&iob->done,
1994 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1996 qeth_dequeue_cmd(card, iob);
1999 /* Wait until the callback for a late reply has completed: */
2000 spin_lock_irq(&iob->lock);
2002 /* Zap any callback that's still pending: */
2004 spin_unlock_irq(&iob->lock);
2015 struct qeth_node_desc {
2016 struct node_descriptor nd1;
2017 struct node_descriptor nd2;
2018 struct node_descriptor nd3;
2021 static void qeth_read_conf_data_cb(struct qeth_card *card,
2022 struct qeth_cmd_buffer *iob,
2023 unsigned int data_length)
2025 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
2029 QETH_CARD_TEXT(card, 2, "cfgunit");
2031 if (data_length < sizeof(*nd)) {
2036 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2037 nd->nd1.plant[1] == _ascebc['M'];
2038 tag = (u8 *)&nd->nd1.tag;
2039 card->info.chpid = tag[0];
2040 card->info.unit_addr2 = tag[1];
2042 tag = (u8 *)&nd->nd2.tag;
2043 card->info.cula = tag[1];
2045 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2046 nd->nd3.model[1] == 0xF0 &&
2047 nd->nd3.model[2] >= 0xF1 &&
2048 nd->nd3.model[2] <= 0xF4;
2051 qeth_notify_cmd(iob, rc);
2055 static int qeth_read_conf_data(struct qeth_card *card)
2057 struct qeth_channel *channel = &card->data;
2058 struct qeth_cmd_buffer *iob;
2061 /* scan for RCD command in extended SenseID data */
2062 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2063 if (!ciw || ciw->cmd == 0)
2065 if (ciw->count < sizeof(struct qeth_node_desc))
2068 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2072 iob->callback = qeth_read_conf_data_cb;
2073 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2076 return qeth_send_control_data(card, iob, NULL, NULL);
2079 static int qeth_idx_check_activate_response(struct qeth_card *card,
2080 struct qeth_channel *channel,
2081 struct qeth_cmd_buffer *iob)
2085 rc = qeth_check_idx_response(card, iob->data);
2089 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2092 /* negative reply: */
2093 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2094 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2096 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2097 case QETH_IDX_ACT_ERR_EXCL:
2098 dev_err(&channel->ccwdev->dev,
2099 "The adapter is used exclusively by another host\n");
2101 case QETH_IDX_ACT_ERR_AUTH:
2102 case QETH_IDX_ACT_ERR_AUTH_USER:
2103 dev_err(&channel->ccwdev->dev,
2104 "Setting the device online failed because of insufficient authorization\n");
2107 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2108 CCW_DEVID(channel->ccwdev));
2113 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
2114 struct qeth_cmd_buffer *iob,
2115 unsigned int data_length)
2117 struct qeth_channel *channel = iob->channel;
2121 QETH_CARD_TEXT(card, 2, "idxrdcb");
2123 rc = qeth_idx_check_activate_response(card, channel, iob);
2127 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2128 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2129 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2130 CCW_DEVID(channel->ccwdev),
2131 card->info.func_level, peer_level);
2136 memcpy(&card->token.issuer_rm_r,
2137 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2138 QETH_MPC_TOKEN_LENGTH);
2139 memcpy(&card->info.mcl_level[0],
2140 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2143 qeth_notify_cmd(iob, rc);
2147 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
2148 struct qeth_cmd_buffer *iob,
2149 unsigned int data_length)
2151 struct qeth_channel *channel = iob->channel;
2155 QETH_CARD_TEXT(card, 2, "idxwrcb");
2157 rc = qeth_idx_check_activate_response(card, channel, iob);
2161 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2162 if ((peer_level & ~0x0100) !=
2163 qeth_peer_func_level(card->info.func_level)) {
2164 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2165 CCW_DEVID(channel->ccwdev),
2166 card->info.func_level, peer_level);
2171 qeth_notify_cmd(iob, rc);
2175 static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2176 struct qeth_cmd_buffer *iob)
2178 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2179 u8 port = ((u8)card->dev->dev_port) | 0x80;
2180 struct ccw1 *ccw = __ccw_from_cmd(iob);
2182 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2184 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2185 iob->finalize = qeth_idx_finalize_cmd;
2187 port |= QETH_IDX_ACT_INVAL_FRAME;
2188 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2189 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2190 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2191 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2192 &card->info.func_level, 2);
2193 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2194 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2197 static int qeth_idx_activate_read_channel(struct qeth_card *card)
2199 struct qeth_channel *channel = &card->read;
2200 struct qeth_cmd_buffer *iob;
2203 QETH_CARD_TEXT(card, 2, "idxread");
2205 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2209 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2210 qeth_idx_setup_activate_cmd(card, iob);
2211 iob->callback = qeth_idx_activate_read_channel_cb;
2213 rc = qeth_send_control_data(card, iob, NULL, NULL);
2217 channel->state = CH_STATE_UP;
2221 static int qeth_idx_activate_write_channel(struct qeth_card *card)
2223 struct qeth_channel *channel = &card->write;
2224 struct qeth_cmd_buffer *iob;
2227 QETH_CARD_TEXT(card, 2, "idxwrite");
2229 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2233 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2234 qeth_idx_setup_activate_cmd(card, iob);
2235 iob->callback = qeth_idx_activate_write_channel_cb;
2237 rc = qeth_send_control_data(card, iob, NULL, NULL);
2241 channel->state = CH_STATE_UP;
2245 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2248 struct qeth_cmd_buffer *iob;
2250 QETH_CARD_TEXT(card, 2, "cmenblcb");
2252 iob = (struct qeth_cmd_buffer *) data;
2253 memcpy(&card->token.cm_filter_r,
2254 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2255 QETH_MPC_TOKEN_LENGTH);
2259 static int qeth_cm_enable(struct qeth_card *card)
2261 struct qeth_cmd_buffer *iob;
2263 QETH_CARD_TEXT(card, 2, "cmenable");
2265 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2269 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2270 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2271 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2272 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2274 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2277 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2280 struct qeth_cmd_buffer *iob;
2282 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2284 iob = (struct qeth_cmd_buffer *) data;
2285 memcpy(&card->token.cm_connection_r,
2286 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2287 QETH_MPC_TOKEN_LENGTH);
2291 static int qeth_cm_setup(struct qeth_card *card)
2293 struct qeth_cmd_buffer *iob;
2295 QETH_CARD_TEXT(card, 2, "cmsetup");
2297 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2301 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2302 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2303 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2304 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2305 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2306 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2307 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2310 static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2312 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2313 link_type == QETH_LINK_TYPE_HSTR) {
2314 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2321 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2323 struct net_device *dev = card->dev;
2324 unsigned int new_mtu;
2327 /* IQD needs accurate max MTU to set up its RX buffers: */
2330 /* tolerate quirky HW: */
2331 max_mtu = ETH_MAX_MTU;
2336 /* move any device with default MTU to new max MTU: */
2337 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2339 /* adjust RX buffer size to new max MTU: */
2340 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2341 if (dev->max_mtu && dev->max_mtu != max_mtu)
2342 qeth_free_qdio_queues(card);
2346 /* default MTUs for first setup: */
2347 else if (IS_LAYER2(card))
2348 new_mtu = ETH_DATA_LEN;
2350 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2353 dev->max_mtu = max_mtu;
2354 dev->mtu = min(new_mtu, max_mtu);
2359 static int qeth_get_mtu_outof_framesize(int framesize)
2361 switch (framesize) {
2375 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2378 __u16 mtu, framesize;
2380 struct qeth_cmd_buffer *iob;
2383 QETH_CARD_TEXT(card, 2, "ulpenacb");
2385 iob = (struct qeth_cmd_buffer *) data;
2386 memcpy(&card->token.ulp_filter_r,
2387 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2388 QETH_MPC_TOKEN_LENGTH);
2390 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2391 mtu = qeth_get_mtu_outof_framesize(framesize);
2393 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2395 *(u16 *)reply->param = mtu;
2397 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2398 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2400 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2401 if (!qeth_is_supported_link_type(card, link_type))
2402 return -EPROTONOSUPPORT;
2405 card->info.link_type = link_type;
2406 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2410 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2412 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
2415 static int qeth_ulp_enable(struct qeth_card *card)
2417 u8 prot_type = qeth_mpc_select_prot_type(card);
2418 struct qeth_cmd_buffer *iob;
2422 QETH_CARD_TEXT(card, 2, "ulpenabl");
2424 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2428 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2429 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2430 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2431 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2432 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2433 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2434 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2437 return qeth_update_max_mtu(card, max_mtu);
2440 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2443 struct qeth_cmd_buffer *iob;
2445 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2447 iob = (struct qeth_cmd_buffer *) data;
2448 memcpy(&card->token.ulp_connection_r,
2449 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2450 QETH_MPC_TOKEN_LENGTH);
2451 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2453 QETH_CARD_TEXT(card, 2, "olmlimit");
2454 dev_err(&card->gdev->dev, "A connection could not be "
2455 "established because of an OLM limit\n");
2461 static int qeth_ulp_setup(struct qeth_card *card)
2464 struct qeth_cmd_buffer *iob;
2466 QETH_CARD_TEXT(card, 2, "ulpsetup");
2468 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2472 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2473 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2474 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2475 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2476 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2477 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2479 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
2480 temp = (card->info.cula << 8) + card->info.unit_addr2;
2481 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2482 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2485 static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2488 struct qeth_qdio_out_buffer *newbuf;
2490 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
2494 newbuf->buffer = q->qdio_bufs[bidx];
2495 skb_queue_head_init(&newbuf->skb_list);
2496 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2497 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2498 q->bufs[bidx] = newbuf;
2502 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2507 qeth_drain_output_queue(q, true);
2508 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2512 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2514 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2520 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2523 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
2524 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
2532 qeth_free_out_buf(q->bufs[--i]);
2533 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2539 static void qeth_tx_completion_timer(struct timer_list *timer)
2541 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2543 napi_schedule(&queue->napi);
2544 QETH_TXQ_STAT_INC(queue, completion_timer);
2547 static int qeth_alloc_qdio_queues(struct qeth_card *card)
2551 QETH_CARD_TEXT(card, 2, "allcqdbf");
2553 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2554 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2557 /* inbound buffer pool */
2558 if (qeth_alloc_buffer_pool(card))
2559 goto out_buffer_pool;
2562 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2563 struct qeth_qdio_out_q *queue;
2565 queue = qeth_alloc_output_queue();
2568 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2569 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2570 card->qdio.out_qs[i] = queue;
2572 queue->queue_no = i;
2573 INIT_LIST_HEAD(&queue->pending_bufs);
2574 spin_lock_init(&queue->lock);
2575 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2577 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2578 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2579 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2581 queue->coalesce_usecs = USEC_PER_SEC;
2582 queue->max_coalesced_frames = 0;
2583 queue->rescan_usecs = 10 * USEC_PER_SEC;
2585 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
2589 if (qeth_alloc_cq(card))
2596 qeth_free_output_queue(card->qdio.out_qs[--i]);
2597 card->qdio.out_qs[i] = NULL;
2599 qeth_free_buffer_pool(card);
2601 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2605 static void qeth_free_qdio_queues(struct qeth_card *card)
2609 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2610 QETH_QDIO_UNINITIALIZED)
2614 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2615 if (card->qdio.in_q->bufs[j].rx_skb) {
2616 consume_skb(card->qdio.in_q->bufs[j].rx_skb);
2617 card->qdio.in_q->bufs[j].rx_skb = NULL;
2621 /* inbound buffer pool */
2622 qeth_free_buffer_pool(card);
2623 /* free outbound qdio_qs */
2624 for (i = 0; i < card->qdio.no_out_queues; i++) {
2625 qeth_free_output_queue(card->qdio.out_qs[i]);
2626 card->qdio.out_qs[i] = NULL;
2630 static void qeth_fill_qib_parms(struct qeth_card *card,
2631 struct qeth_qib_parms *parms)
2633 struct qeth_qdio_out_q *queue;
2636 parms->pcit_magic[0] = 'P';
2637 parms->pcit_magic[1] = 'C';
2638 parms->pcit_magic[2] = 'I';
2639 parms->pcit_magic[3] = 'T';
2640 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2641 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2642 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2643 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2645 parms->blkt_magic[0] = 'B';
2646 parms->blkt_magic[1] = 'L';
2647 parms->blkt_magic[2] = 'K';
2648 parms->blkt_magic[3] = 'T';
2649 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2650 parms->blkt_total = card->info.blkt.time_total;
2651 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2652 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
2654 /* Prio-queueing implicitly uses the default priorities: */
2655 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2658 parms->pque_magic[0] = 'P';
2659 parms->pque_magic[1] = 'Q';
2660 parms->pque_magic[2] = 'U';
2661 parms->pque_magic[3] = 'E';
2662 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2663 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2664 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2666 qeth_for_each_output_queue(card, queue, i)
2667 parms->pque_priority[i] = queue->priority;
2670 static int qeth_qdio_activate(struct qeth_card *card)
2672 QETH_CARD_TEXT(card, 3, "qdioact");
2673 return qdio_activate(CARD_DDEV(card));
2676 static int qeth_dm_act(struct qeth_card *card)
2678 struct qeth_cmd_buffer *iob;
2680 QETH_CARD_TEXT(card, 2, "dmact");
2682 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2686 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2687 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2688 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2689 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2690 return qeth_send_control_data(card, iob, NULL, NULL);
2693 static int qeth_mpc_initialize(struct qeth_card *card)
2697 QETH_CARD_TEXT(card, 2, "mpcinit");
2699 rc = qeth_issue_next_read(card);
2701 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2704 rc = qeth_cm_enable(card);
2706 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2709 rc = qeth_cm_setup(card);
2711 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2714 rc = qeth_ulp_enable(card);
2716 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2719 rc = qeth_ulp_setup(card);
2721 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2724 rc = qeth_alloc_qdio_queues(card);
2726 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2729 rc = qeth_qdio_establish(card);
2731 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2732 qeth_free_qdio_queues(card);
2735 rc = qeth_qdio_activate(card);
2737 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2740 rc = qeth_dm_act(card);
2742 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2749 static void qeth_print_status_message(struct qeth_card *card)
2751 switch (card->info.type) {
2752 case QETH_CARD_TYPE_OSD:
2753 case QETH_CARD_TYPE_OSM:
2754 case QETH_CARD_TYPE_OSX:
2755 /* VM will use a non-zero first character
2756 * to indicate a HiperSockets like reporting
2757 * of the level OSA sets the first character to zero
2759 if (!card->info.mcl_level[0]) {
2760 sprintf(card->info.mcl_level, "%02x%02x",
2761 card->info.mcl_level[2],
2762 card->info.mcl_level[3]);
2766 case QETH_CARD_TYPE_IQD:
2767 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2768 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2769 card->info.mcl_level[0]];
2770 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2771 card->info.mcl_level[1]];
2772 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2773 card->info.mcl_level[2]];
2774 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2775 card->info.mcl_level[3]];
2776 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2780 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2782 dev_info(&card->gdev->dev,
2783 "Device is a%s card%s%s%s\nwith link type %s.\n",
2784 qeth_get_cardname(card),
2785 (card->info.mcl_level[0]) ? " (level: " : "",
2786 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2787 (card->info.mcl_level[0]) ? ")" : "",
2788 qeth_get_cardname_short(card));
2791 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2793 struct qeth_buffer_pool_entry *entry;
2795 QETH_CARD_TEXT(card, 5, "inwrklst");
2797 list_for_each_entry(entry,
2798 &card->qdio.init_pool.entry_list, init_list) {
2799 qeth_put_buffer_pool_entry(card, entry);
2803 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2804 struct qeth_card *card)
2806 struct qeth_buffer_pool_entry *entry;
2809 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2812 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
2814 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2815 if (page_count(entry->elements[i]) > 1) {
2821 list_del_init(&entry->list);
2826 /* no free buffer in pool so take first one and swap pages */
2827 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2828 struct qeth_buffer_pool_entry, list);
2829 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2830 if (page_count(entry->elements[i]) > 1) {
2831 struct page *page = dev_alloc_page();
2836 __free_page(entry->elements[i]);
2837 entry->elements[i] = page;
2838 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2841 list_del_init(&entry->list);
2845 static int qeth_init_input_buffer(struct qeth_card *card,
2846 struct qeth_qdio_buffer *buf)
2848 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
2851 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2852 buf->rx_skb = netdev_alloc_skb(card->dev,
2854 sizeof(struct ipv6hdr));
2860 pool_entry = qeth_find_free_buffer_pool_entry(card);
2864 buf->pool_entry = pool_entry;
2868 * since the buffer is accessed only from the input_tasklet
2869 * there shouldn't be a need to synchronize; also, since we use
2870 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2873 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2874 buf->buffer->element[i].length = PAGE_SIZE;
2875 buf->buffer->element[i].addr =
2876 page_to_phys(pool_entry->elements[i]);
2877 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2878 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2880 buf->buffer->element[i].eflags = 0;
2881 buf->buffer->element[i].sflags = 0;
2886 static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2887 struct qeth_qdio_out_q *queue)
2889 if (!IS_IQD(card) ||
2890 qeth_iqd_is_mcast_queue(card, queue) ||
2891 card->options.cq == QETH_CQ_ENABLED ||
2892 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2895 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2898 static int qeth_init_qdio_queues(struct qeth_card *card)
2900 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
2904 QETH_CARD_TEXT(card, 2, "initqdqs");
2907 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2908 memset(&card->rx, 0, sizeof(struct qeth_rx));
2910 qeth_initialize_working_pool_list(card);
2911 /*give only as many buffers to hardware as we have buffer pool entries*/
2912 for (i = 0; i < rx_bufs; i++) {
2913 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2918 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
2919 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 0, rx_bufs);
2921 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2926 rc = qeth_cq_init(card);
2931 /* outbound queue */
2932 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2933 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2935 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2936 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2937 queue->next_buf_to_fill = 0;
2939 queue->prev_hdr = NULL;
2940 queue->coalesced_frames = 0;
2941 queue->bulk_start = 0;
2942 queue->bulk_count = 0;
2943 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
2944 atomic_set(&queue->used_buffers, 0);
2945 atomic_set(&queue->set_pci_flags_count, 0);
2946 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
2951 static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2952 struct qeth_cmd_buffer *iob)
2954 qeth_mpc_finalize_cmd(card, iob);
2956 /* override with IPA-specific values: */
2957 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
2960 static void qeth_prepare_ipa_cmd(struct qeth_card *card,
2961 struct qeth_cmd_buffer *iob, u16 cmd_length)
2963 u8 prot_type = qeth_mpc_select_prot_type(card);
2964 u16 total_length = iob->length;
2966 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2968 iob->finalize = qeth_ipa_finalize_cmd;
2970 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2971 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
2972 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2973 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2974 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
2975 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2976 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2977 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
2980 static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
2981 struct qeth_cmd_buffer *reply)
2983 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
2985 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
2988 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2989 enum qeth_ipa_cmds cmd_code,
2990 enum qeth_prot_versions prot,
2991 unsigned int data_length)
2993 struct qeth_cmd_buffer *iob;
2994 struct qeth_ipacmd_hdr *hdr;
2996 data_length += offsetof(struct qeth_ipa_cmd, data);
2997 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3002 qeth_prepare_ipa_cmd(card, iob, data_length);
3003 iob->match = qeth_ipa_match_reply;
3005 hdr = &__ipa_cmd(iob)->hdr;
3006 hdr->command = cmd_code;
3007 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3008 /* hdr->seqno is set by qeth_send_control_data() */
3009 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
3010 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3011 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3012 hdr->param_count = 1;
3013 hdr->prot_version = prot;
3016 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3018 static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3019 struct qeth_reply *reply, unsigned long data)
3021 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3023 return (cmd->hdr.return_code) ? -EIO : 0;
3027 * qeth_send_ipa_cmd() - send an IPA command
3029 * See qeth_send_control_data() for explanation of the arguments.
3032 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3033 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3039 QETH_CARD_TEXT(card, 4, "sendipa");
3041 if (card->read_or_write_problem) {
3046 if (reply_cb == NULL)
3047 reply_cb = qeth_send_ipa_cmd_cb;
3048 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
3050 qeth_clear_ipacmd_list(card);
3051 qeth_schedule_recovery(card);
3055 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3057 static int qeth_send_startlan_cb(struct qeth_card *card,
3058 struct qeth_reply *reply, unsigned long data)
3060 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3062 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3065 return (cmd->hdr.return_code) ? -EIO : 0;
3068 static int qeth_send_startlan(struct qeth_card *card)
3070 struct qeth_cmd_buffer *iob;
3072 QETH_CARD_TEXT(card, 2, "strtlan");
3074 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
3077 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
3080 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3082 if (!cmd->hdr.return_code)
3083 cmd->hdr.return_code =
3084 cmd->data.setadapterparms.hdr.return_code;
3085 return cmd->hdr.return_code;
3088 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3089 struct qeth_reply *reply, unsigned long data)
3091 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3092 struct qeth_query_cmds_supp *query_cmd;
3094 QETH_CARD_TEXT(card, 3, "quyadpcb");
3095 if (qeth_setadpparms_inspect_rc(cmd))
3098 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3099 if (query_cmd->lan_type & 0x7f) {
3100 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3101 return -EPROTONOSUPPORT;
3103 card->info.link_type = query_cmd->lan_type;
3104 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
3107 card->options.adp.supported = query_cmd->supported_cmds;
3111 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3112 enum qeth_ipa_setadp_cmd adp_cmd,
3113 unsigned int data_length)
3115 struct qeth_ipacmd_setadpparms_hdr *hdr;
3116 struct qeth_cmd_buffer *iob;
3118 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3120 offsetof(struct qeth_ipacmd_setadpparms,
3125 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3126 hdr->cmdlength = sizeof(*hdr) + data_length;
3127 hdr->command_code = adp_cmd;
3128 hdr->used_total = 1;
3133 static int qeth_query_setadapterparms(struct qeth_card *card)
3136 struct qeth_cmd_buffer *iob;
3138 QETH_CARD_TEXT(card, 3, "queryadp");
3139 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3140 SETADP_DATA_SIZEOF(query_cmds_supp));
3143 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3147 static int qeth_query_ipassists_cb(struct qeth_card *card,
3148 struct qeth_reply *reply, unsigned long data)
3150 struct qeth_ipa_cmd *cmd;
3152 QETH_CARD_TEXT(card, 2, "qipasscb");
3154 cmd = (struct qeth_ipa_cmd *) data;
3156 switch (cmd->hdr.return_code) {
3157 case IPA_RC_SUCCESS:
3159 case IPA_RC_NOTSUPP:
3160 case IPA_RC_L2_UNSUPPORTED_CMD:
3161 QETH_CARD_TEXT(card, 2, "ipaunsup");
3162 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3163 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
3166 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3167 CARD_DEVID(card), cmd->hdr.return_code);
3171 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3172 card->options.ipa4 = cmd->hdr.assists;
3173 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3174 card->options.ipa6 = cmd->hdr.assists;
3176 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3181 static int qeth_query_ipassists(struct qeth_card *card,
3182 enum qeth_prot_versions prot)
3185 struct qeth_cmd_buffer *iob;
3187 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
3188 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
3191 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3195 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3196 struct qeth_reply *reply, unsigned long data)
3198 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3199 struct qeth_query_switch_attributes *attrs;
3200 struct qeth_switch_info *sw_info;
3202 QETH_CARD_TEXT(card, 2, "qswiatcb");
3203 if (qeth_setadpparms_inspect_rc(cmd))
3206 sw_info = (struct qeth_switch_info *)reply->param;
3207 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3208 sw_info->capabilities = attrs->capabilities;
3209 sw_info->settings = attrs->settings;
3210 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3215 int qeth_query_switch_attributes(struct qeth_card *card,
3216 struct qeth_switch_info *sw_info)
3218 struct qeth_cmd_buffer *iob;
3220 QETH_CARD_TEXT(card, 2, "qswiattr");
3221 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3223 if (!netif_carrier_ok(card->dev))
3225 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
3228 return qeth_send_ipa_cmd(card, iob,
3229 qeth_query_switch_attributes_cb, sw_info);
3232 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3233 enum qeth_diags_cmds sub_cmd,
3234 unsigned int data_length)
3236 struct qeth_ipacmd_diagass *cmd;
3237 struct qeth_cmd_buffer *iob;
3239 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3240 DIAG_HDR_LEN + data_length);
3244 cmd = &__ipa_cmd(iob)->data.diagass;
3245 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3246 cmd->subcmd = sub_cmd;
3249 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3251 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3252 struct qeth_reply *reply, unsigned long data)
3254 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3255 u16 rc = cmd->hdr.return_code;
3258 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3262 card->info.diagass_support = cmd->data.diagass.ext;
3266 static int qeth_query_setdiagass(struct qeth_card *card)
3268 struct qeth_cmd_buffer *iob;
3270 QETH_CARD_TEXT(card, 2, "qdiagass");
3271 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3274 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3277 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3279 unsigned long info = get_zeroed_page(GFP_KERNEL);
3280 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3281 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3282 struct ccw_dev_id ccwid;
3285 tid->chpid = card->info.chpid;
3286 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3287 tid->ssid = ccwid.ssid;
3288 tid->devno = ccwid.devno;
3291 level = stsi(NULL, 0, 0, 0);
3292 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3293 tid->lparnr = info222->lpar_number;
3294 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3295 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3296 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3301 static int qeth_hw_trap_cb(struct qeth_card *card,
3302 struct qeth_reply *reply, unsigned long data)
3304 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3305 u16 rc = cmd->hdr.return_code;
3308 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3314 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3316 struct qeth_cmd_buffer *iob;
3317 struct qeth_ipa_cmd *cmd;
3319 QETH_CARD_TEXT(card, 2, "diagtrap");
3320 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3323 cmd = __ipa_cmd(iob);
3324 cmd->data.diagass.type = 1;
3325 cmd->data.diagass.action = action;
3327 case QETH_DIAGS_TRAP_ARM:
3328 cmd->data.diagass.options = 0x0003;
3329 cmd->data.diagass.ext = 0x00010000 +
3330 sizeof(struct qeth_trap_id);
3331 qeth_get_trap_id(card,
3332 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3334 case QETH_DIAGS_TRAP_DISARM:
3335 cmd->data.diagass.options = 0x0001;
3337 case QETH_DIAGS_TRAP_CAPTURE:
3340 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3343 static int qeth_check_qdio_errors(struct qeth_card *card,
3344 struct qdio_buffer *buf,
3345 unsigned int qdio_error,
3346 const char *dbftext)
3349 QETH_CARD_TEXT(card, 2, dbftext);
3350 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3351 buf->element[15].sflags);
3352 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3353 buf->element[14].sflags);
3354 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3355 if ((buf->element[15].sflags) == 0x12) {
3356 QETH_CARD_STAT_INC(card, rx_fifo_errors);
3364 static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3367 struct qeth_qdio_q *queue = card->qdio.in_q;
3368 struct list_head *lh;
3373 /* only requeue at a certain threshold to avoid SIGAs */
3374 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3375 for (i = queue->next_buf_to_init;
3376 i < queue->next_buf_to_init + count; ++i) {
3377 if (qeth_init_input_buffer(card,
3378 &queue->bufs[QDIO_BUFNR(i)])) {
3385 if (newcount < count) {
3386 /* we are in memory shortage so we switch back to
3387 traditional skb allocation and drop packages */
3388 atomic_set(&card->force_alloc_skb, 3);
3391 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3396 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3398 if (i == card->qdio.in_buf_pool.buf_count) {
3399 QETH_CARD_TEXT(card, 2, "qsarbw");
3400 schedule_delayed_work(
3401 &card->buffer_reclaim_work,
3402 QETH_RECLAIM_WORK_TIME);
3407 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0,
3408 queue->next_buf_to_init,
3411 QETH_CARD_TEXT(card, 2, "qinberr");
3413 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3421 static void qeth_buffer_reclaim_work(struct work_struct *work)
3423 struct qeth_card *card = container_of(to_delayed_work(work),
3425 buffer_reclaim_work);
3428 napi_schedule(&card->napi);
3429 /* kick-start the NAPI softirq: */
3433 static void qeth_handle_send_error(struct qeth_card *card,
3434 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3436 int sbalf15 = buffer->buffer->element[15].sflags;
3438 QETH_CARD_TEXT(card, 6, "hdsnderr");
3439 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3444 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3447 QETH_CARD_TEXT(card, 1, "lnkfail");
3448 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3449 (u16)qdio_err, (u8)sbalf15);
3453 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3454 * @queue: queue to check for packing buffer
3456 * Returns number of buffers that were prepared for flush.
3458 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3460 struct qeth_qdio_out_buffer *buffer;
3462 buffer = queue->bufs[queue->next_buf_to_fill];
3463 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3464 (buffer->next_element_to_fill > 0)) {
3465 /* it's a packing buffer */
3466 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3467 queue->next_buf_to_fill =
3468 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3475 * Switched to packing state if the number of used buffers on a queue
3476 * reaches a certain limit.
3478 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3480 if (!queue->do_pack) {
3481 if (atomic_read(&queue->used_buffers)
3482 >= QETH_HIGH_WATERMARK_PACK){
3483 /* switch non-PACKING -> PACKING */
3484 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3485 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3492 * Switches from packing to non-packing mode. If there is a packing
3493 * buffer on the queue this buffer will be prepared to be flushed.
3494 * In that case 1 is returned to inform the caller. If no buffer
3495 * has to be flushed, zero is returned.
3497 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3499 if (queue->do_pack) {
3500 if (atomic_read(&queue->used_buffers)
3501 <= QETH_LOW_WATERMARK_PACK) {
3502 /* switch PACKING -> non-PACKING */
3503 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3504 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3506 return qeth_prep_flush_pack_buffer(queue);
3512 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3515 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
3516 struct qeth_card *card = queue->card;
3517 unsigned int frames, usecs;
3518 struct qaob *aob = NULL;
3522 for (i = index; i < index + count; ++i) {
3523 unsigned int bidx = QDIO_BUFNR(i);
3524 struct sk_buff *skb;
3526 buf = queue->bufs[bidx];
3527 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3528 SBAL_EFLAGS_LAST_ENTRY;
3529 queue->coalesced_frames += buf->frames;
3532 skb_queue_walk(&buf->skb_list, skb)
3533 skb_tx_timestamp(skb);
3538 if (card->options.cq == QETH_CQ_ENABLED &&
3539 !qeth_iqd_is_mcast_queue(card, queue) &&
3542 buf->aob = kmem_cache_zalloc(qeth_qaob_cache,
3545 struct qeth_qaob_priv1 *priv;
3548 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3549 priv->state = QETH_QAOB_ISSUED;
3550 priv->queue_no = queue->queue_no;
3554 if (!queue->do_pack) {
3555 if ((atomic_read(&queue->used_buffers) >=
3556 (QETH_HIGH_WATERMARK_PACK -
3557 QETH_WATERMARK_PACK_FUZZ)) &&
3558 !atomic_read(&queue->set_pci_flags_count)) {
3559 /* it's likely that we'll go to packing
3561 atomic_inc(&queue->set_pci_flags_count);
3562 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3565 if (!atomic_read(&queue->set_pci_flags_count)) {
3567 * there's no outstanding PCI any more, so we
3568 * have to request a PCI to be sure the PCI
3569 * will wake at some time in the future then we
3570 * can flush packed buffers that might still be
3571 * hanging around, which can happen if no
3572 * further send was requested by the stack
3574 atomic_inc(&queue->set_pci_flags_count);
3575 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3580 QETH_TXQ_STAT_INC(queue, doorbell);
3581 rc = qdio_add_bufs_to_output_queue(CARD_DDEV(card), queue->queue_no,
3587 /* ignore temporary SIGA errors without busy condition */
3589 /* Fake the TX completion interrupt: */
3590 frames = READ_ONCE(queue->max_coalesced_frames);
3591 usecs = READ_ONCE(queue->coalesce_usecs);
3593 if (frames && queue->coalesced_frames >= frames) {
3594 napi_schedule(&queue->napi);
3595 queue->coalesced_frames = 0;
3596 QETH_TXQ_STAT_INC(queue, coal_frames);
3597 } else if (qeth_use_tx_irqs(card) &&
3598 atomic_read(&queue->used_buffers) >= 32) {
3599 /* Old behaviour carried over from the qdio layer: */
3600 napi_schedule(&queue->napi);
3601 QETH_TXQ_STAT_INC(queue, coal_frames);
3603 qeth_tx_arm_timer(queue, usecs);
3608 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3609 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3610 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3611 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3612 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3614 /* this must not happen under normal circumstances. if it
3615 * happens something is really wrong -> recover */
3616 qeth_schedule_recovery(queue->card);
3620 static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3622 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
3624 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
3625 queue->prev_hdr = NULL;
3626 queue->bulk_count = 0;
3629 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3632 * check if weed have to switch to non-packing mode or if
3633 * we have to get a pci flag out on the queue
3635 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3636 !atomic_read(&queue->set_pci_flags_count)) {
3637 unsigned int index, flush_cnt;
3639 spin_lock(&queue->lock);
3641 index = queue->next_buf_to_fill;
3643 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3644 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3645 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3648 qeth_flush_buffers(queue, index, flush_cnt);
3649 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3652 spin_unlock(&queue->lock);
3656 static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
3658 struct qeth_card *card = (struct qeth_card *)card_ptr;
3660 napi_schedule_irqoff(&card->napi);
3663 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3667 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3671 if (card->options.cq == cq) {
3676 qeth_free_qdio_queues(card);
3677 card->options.cq = cq;
3684 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3686 static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3688 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3689 unsigned int queue_no = priv->queue_no;
3691 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3693 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3694 queue_no < card->qdio.no_out_queues)
3695 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3698 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3699 unsigned int queue, int first_element,
3702 struct qeth_qdio_q *cq = card->qdio.c_q;
3706 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3707 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3708 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3711 netif_tx_stop_all_queues(card->dev);
3712 qeth_schedule_recovery(card);
3716 for (i = first_element; i < first_element + count; ++i) {
3717 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3720 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3721 buffer->element[e].addr) {
3722 unsigned long phys_aob_addr = buffer->element[e].addr;
3724 qeth_qdio_handle_aob(card, phys_to_virt(phys_aob_addr));
3727 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3729 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), queue,
3730 cq->next_buf_to_init, count);
3732 dev_warn(&card->gdev->dev,
3733 "QDIO reported an error, rc=%i\n", rc);
3734 QETH_CARD_TEXT(card, 2, "qcqherr");
3737 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
3740 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3741 unsigned int qdio_err, int queue,
3742 int first_elem, int count,
3743 unsigned long card_ptr)
3745 struct qeth_card *card = (struct qeth_card *)card_ptr;
3747 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3748 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3751 qeth_schedule_recovery(card);
3754 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3755 unsigned int qdio_error, int __queue,
3756 int first_element, int count,
3757 unsigned long card_ptr)
3759 struct qeth_card *card = (struct qeth_card *) card_ptr;
3761 QETH_CARD_TEXT(card, 2, "achkcond");
3762 netif_tx_stop_all_queues(card->dev);
3763 qeth_schedule_recovery(card);
3767 * Note: Function assumes that we have 4 outbound queues.
3769 static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3771 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3774 switch (card->qdio.do_prio_queueing) {
3775 case QETH_PRIO_Q_ING_TOS:
3776 case QETH_PRIO_Q_ING_PREC:
3777 switch (vlan_get_protocol(skb)) {
3778 case htons(ETH_P_IP):
3779 tos = ipv4_get_dsfield(ip_hdr(skb));
3781 case htons(ETH_P_IPV6):
3782 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3785 return card->qdio.default_out_queue;
3787 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3788 return ~tos >> 6 & 3;
3789 if (tos & IPTOS_MINCOST)
3791 if (tos & IPTOS_RELIABILITY)
3793 if (tos & IPTOS_THROUGHPUT)
3795 if (tos & IPTOS_LOWDELAY)
3798 case QETH_PRIO_Q_ING_SKB:
3799 if (skb->priority > 5)
3801 return ~skb->priority >> 1 & 3;
3802 case QETH_PRIO_Q_ING_VLAN:
3803 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3804 return ~ntohs(veth->h_vlan_TCI) >>
3805 (VLAN_PRIO_SHIFT + 1) & 3;
3807 case QETH_PRIO_Q_ING_FIXED:
3808 return card->qdio.default_out_queue;
3812 return card->qdio.default_out_queue;
3816 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3819 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3820 * fragmented part of the SKB. Returns zero for linear SKB.
3822 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3824 int cnt, elements = 0;
3826 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3827 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3829 elements += qeth_get_elements_for_range(
3830 (addr_t)skb_frag_address(frag),
3831 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3837 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3838 * to transmit an skb.
3839 * @skb: the skb to operate on.
3840 * @data_offset: skip this part of the skb's linear data
3842 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3843 * skb's data (both its linear part and paged fragments).
3845 static unsigned int qeth_count_elements(struct sk_buff *skb,
3846 unsigned int data_offset)
3848 unsigned int elements = qeth_get_elements_for_frags(skb);
3849 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3850 addr_t start = (addr_t)skb->data + data_offset;
3853 elements += qeth_get_elements_for_range(start, end);
3857 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3861 * qeth_add_hw_header() - add a HW header to an skb.
3862 * @queue: TX queue that the skb will be placed on.
3863 * @skb: skb that the HW header should be added to.
3864 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3865 * it contains a valid pointer to a qeth_hdr.
3866 * @hdr_len: length of the HW header.
3867 * @proto_len: length of protocol headers that need to be in same page as the
3869 * @elements: returns the required number of buffer elements for this skb.
3871 * Returns the pushed length. If the header can't be pushed on
3872 * (eg. because it would cross a page boundary), it is allocated from
3873 * the cache instead and 0 is returned.
3874 * The number of needed buffer elements is returned in @elements.
3875 * Error to create the hdr is indicated by returning with < 0.
3877 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3878 struct sk_buff *skb, struct qeth_hdr **hdr,
3879 unsigned int hdr_len, unsigned int proto_len,
3880 unsigned int *elements)
3882 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
3883 const unsigned int contiguous = proto_len ? proto_len : 1;
3884 const unsigned int max_elements = queue->max_elements;
3885 unsigned int __elements;
3891 start = (addr_t)skb->data - hdr_len;
3892 end = (addr_t)skb->data;
3894 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3895 /* Push HW header into same page as first protocol header. */
3897 /* ... but TSO always needs a separate element for headers: */
3898 if (skb_is_gso(skb))
3899 __elements = 1 + qeth_count_elements(skb, proto_len);
3901 __elements = qeth_count_elements(skb, 0);
3902 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3903 /* Push HW header into preceding page, flush with skb->data. */
3905 __elements = 1 + qeth_count_elements(skb, 0);
3907 /* Use header cache, copy protocol headers up. */
3909 __elements = 1 + qeth_count_elements(skb, proto_len);
3912 /* Compress skb to fit into one IO buffer: */
3913 if (__elements > max_elements) {
3914 if (!skb_is_nonlinear(skb)) {
3915 /* Drop it, no easy way of shrinking it further. */
3916 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3917 max_elements, __elements, skb->len);
3921 rc = skb_linearize(skb);
3923 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3927 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3928 /* Linearization changed the layout, re-evaluate: */
3932 *elements = __elements;
3933 /* Add the header: */
3935 *hdr = skb_push(skb, hdr_len);
3939 /* Fall back to cache element with known-good alignment: */
3940 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3942 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
3945 /* Copy protocol headers behind HW header: */
3946 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3950 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
3951 struct sk_buff *curr_skb,
3952 struct qeth_hdr *curr_hdr)
3954 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
3955 struct qeth_hdr *prev_hdr = queue->prev_hdr;
3960 /* All packets must have the same target: */
3961 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3962 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3964 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3965 eth_hdr(curr_skb)->h_dest) &&
3966 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3969 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3970 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3974 * qeth_fill_buffer() - map skb into an output buffer
3975 * @buf: buffer to transport the skb
3976 * @skb: skb to map into the buffer
3977 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3978 * from qeth_core_header_cache.
3979 * @offset: when mapping the skb, start at skb->data + offset
3980 * @hd_len: if > 0, build a dedicated header element of this size
3982 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3983 struct sk_buff *skb, struct qeth_hdr *hdr,
3984 unsigned int offset, unsigned int hd_len)
3986 struct qdio_buffer *buffer = buf->buffer;
3987 int element = buf->next_element_to_fill;
3988 int length = skb_headlen(skb) - offset;
3989 char *data = skb->data + offset;
3990 unsigned int elem_length, cnt;
3991 bool is_first_elem = true;
3993 __skb_queue_tail(&buf->skb_list, skb);
3995 /* build dedicated element for HW Header */
3997 is_first_elem = false;
3999 buffer->element[element].addr = virt_to_phys(hdr);
4000 buffer->element[element].length = hd_len;
4001 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4003 /* HW header is allocated from cache: */
4004 if ((void *)hdr != skb->data)
4005 __set_bit(element, buf->from_kmem_cache);
4006 /* HW header was pushed and is contiguous with linear part: */
4007 else if (length > 0 && !PAGE_ALIGNED(data) &&
4008 (data == (char *)hdr + hd_len))
4009 buffer->element[element].eflags |=
4010 SBAL_EFLAGS_CONTIGUOUS;
4015 /* map linear part into buffer element(s) */
4016 while (length > 0) {
4017 elem_length = min_t(unsigned int, length,
4018 PAGE_SIZE - offset_in_page(data));
4020 buffer->element[element].addr = virt_to_phys(data);
4021 buffer->element[element].length = elem_length;
4022 length -= elem_length;
4023 if (is_first_elem) {
4024 is_first_elem = false;
4025 if (length || skb_is_nonlinear(skb))
4026 /* skb needs additional elements */
4027 buffer->element[element].eflags =
4028 SBAL_EFLAGS_FIRST_FRAG;
4030 buffer->element[element].eflags = 0;
4032 buffer->element[element].eflags =
4033 SBAL_EFLAGS_MIDDLE_FRAG;
4036 data += elem_length;
4040 /* map page frags into buffer element(s) */
4041 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4042 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4044 data = skb_frag_address(frag);
4045 length = skb_frag_size(frag);
4046 while (length > 0) {
4047 elem_length = min_t(unsigned int, length,
4048 PAGE_SIZE - offset_in_page(data));
4050 buffer->element[element].addr = virt_to_phys(data);
4051 buffer->element[element].length = elem_length;
4052 buffer->element[element].eflags =
4053 SBAL_EFLAGS_MIDDLE_FRAG;
4055 length -= elem_length;
4056 data += elem_length;
4061 if (buffer->element[element - 1].eflags)
4062 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4063 buf->next_element_to_fill = element;
4067 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4068 struct sk_buff *skb, unsigned int elements,
4069 struct qeth_hdr *hdr, unsigned int offset,
4070 unsigned int hd_len)
4072 unsigned int bytes = qdisc_pkt_len(skb);
4073 struct qeth_qdio_out_buffer *buffer;
4074 unsigned int next_element;
4075 struct netdev_queue *txq;
4076 bool stopped = false;
4079 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
4080 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4082 /* Just a sanity check, the wake/stop logic should ensure that we always
4083 * get a free buffer.
4085 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4088 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4091 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4092 if (buffer->next_element_to_fill > 0) {
4093 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4094 queue->bulk_count++;
4097 if (queue->bulk_count >= queue->bulk_max)
4101 qeth_flush_queue(queue);
4103 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4104 queue->bulk_count)];
4106 /* Sanity-check again: */
4107 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4111 if (buffer->next_element_to_fill == 0 &&
4112 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4113 /* If a TX completion happens right _here_ and misses to wake
4114 * the txq, then our re-check below will catch the race.
4116 QETH_TXQ_STAT_INC(queue, stopped);
4117 netif_tx_stop_queue(txq);
4121 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4122 buffer->bytes += bytes;
4123 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4124 queue->prev_hdr = hdr;
4126 flush = __netdev_tx_sent_queue(txq, bytes,
4127 !stopped && netdev_xmit_more());
4129 if (flush || next_element >= queue->max_elements) {
4130 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4131 queue->bulk_count++;
4133 if (queue->bulk_count >= queue->bulk_max)
4137 qeth_flush_queue(queue);
4140 if (stopped && !qeth_out_queue_is_full(queue))
4141 netif_tx_start_queue(txq);
4145 static int qeth_do_send_packet(struct qeth_card *card,
4146 struct qeth_qdio_out_q *queue,
4147 struct sk_buff *skb, struct qeth_hdr *hdr,
4148 unsigned int offset, unsigned int hd_len,
4149 unsigned int elements_needed)
4151 unsigned int start_index = queue->next_buf_to_fill;
4152 struct qeth_qdio_out_buffer *buffer;
4153 unsigned int next_element;
4154 struct netdev_queue *txq;
4155 bool stopped = false;
4156 int flush_count = 0;
4160 buffer = queue->bufs[queue->next_buf_to_fill];
4162 /* Just a sanity check, the wake/stop logic should ensure that we always
4163 * get a free buffer.
4165 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4168 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4170 /* check if we need to switch packing state of this queue */
4171 qeth_switch_to_packing_if_needed(queue);
4172 if (queue->do_pack) {
4174 /* does packet fit in current buffer? */
4175 if (buffer->next_element_to_fill + elements_needed >
4176 queue->max_elements) {
4177 /* ... no -> set state PRIMED */
4178 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4180 queue->next_buf_to_fill =
4181 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4182 buffer = queue->bufs[queue->next_buf_to_fill];
4184 /* We stepped forward, so sanity-check again: */
4185 if (atomic_read(&buffer->state) !=
4186 QETH_QDIO_BUF_EMPTY) {
4187 qeth_flush_buffers(queue, start_index,
4195 if (buffer->next_element_to_fill == 0 &&
4196 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4197 /* If a TX completion happens right _here_ and misses to wake
4198 * the txq, then our re-check below will catch the race.
4200 QETH_TXQ_STAT_INC(queue, stopped);
4201 netif_tx_stop_queue(txq);
4205 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4206 buffer->bytes += qdisc_pkt_len(skb);
4207 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4210 QETH_TXQ_STAT_INC(queue, skbs_pack);
4211 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4213 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4214 queue->next_buf_to_fill =
4215 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4219 qeth_flush_buffers(queue, start_index, flush_count);
4223 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4225 if (stopped && !qeth_out_queue_is_full(queue))
4226 netif_tx_start_queue(txq);
4230 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4231 unsigned int payload_len, struct sk_buff *skb,
4232 unsigned int proto_len)
4234 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4236 ext->hdr_tot_len = sizeof(*ext);
4237 ext->imb_hdr_no = 1;
4239 ext->hdr_version = 1;
4241 ext->payload_len = payload_len;
4242 ext->mss = skb_shinfo(skb)->gso_size;
4243 ext->dg_hdr_len = proto_len;
4246 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4247 struct qeth_qdio_out_q *queue, __be16 proto,
4248 void (*fill_header)(struct qeth_qdio_out_q *queue,
4249 struct qeth_hdr *hdr, struct sk_buff *skb,
4250 __be16 proto, unsigned int data_len))
4252 unsigned int proto_len, hw_hdr_len;
4253 unsigned int frame_len = skb->len;
4254 bool is_tso = skb_is_gso(skb);
4255 unsigned int data_offset = 0;
4256 struct qeth_hdr *hdr = NULL;
4257 unsigned int hd_len = 0;
4258 unsigned int elements;
4262 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4263 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4265 hw_hdr_len = sizeof(struct qeth_hdr);
4266 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4269 rc = skb_cow_head(skb, hw_hdr_len);
4273 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4277 if (is_tso || !push_len) {
4278 /* HW header needs its own buffer element. */
4279 hd_len = hw_hdr_len + proto_len;
4280 data_offset = push_len + proto_len;
4282 memset(hdr, 0, hw_hdr_len);
4283 fill_header(queue, hdr, skb, proto, frame_len);
4285 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4286 frame_len - proto_len, skb, proto_len);
4289 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4292 /* TODO: drop skb_orphan() once TX completion is fast enough */
4294 spin_lock(&queue->lock);
4295 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4297 spin_unlock(&queue->lock);
4300 if (rc && !push_len)
4301 kmem_cache_free(qeth_core_header_cache, hdr);
4305 EXPORT_SYMBOL_GPL(qeth_xmit);
4307 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4308 struct qeth_reply *reply, unsigned long data)
4310 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4311 struct qeth_ipacmd_setadpparms *setparms;
4313 QETH_CARD_TEXT(card, 4, "prmadpcb");
4315 setparms = &(cmd->data.setadapterparms);
4316 if (qeth_setadpparms_inspect_rc(cmd)) {
4317 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4318 setparms->data.mode = SET_PROMISC_MODE_OFF;
4320 card->info.promisc_mode = setparms->data.mode;
4321 return (cmd->hdr.return_code) ? -EIO : 0;
4324 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4326 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4327 SET_PROMISC_MODE_OFF;
4328 struct qeth_cmd_buffer *iob;
4329 struct qeth_ipa_cmd *cmd;
4331 QETH_CARD_TEXT(card, 4, "setprom");
4332 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4334 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4335 SETADP_DATA_SIZEOF(mode));
4338 cmd = __ipa_cmd(iob);
4339 cmd->data.setadapterparms.data.mode = mode;
4340 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4342 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4344 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4345 struct qeth_reply *reply, unsigned long data)
4347 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4348 struct qeth_ipacmd_setadpparms *adp_cmd;
4350 QETH_CARD_TEXT(card, 4, "chgmaccb");
4351 if (qeth_setadpparms_inspect_rc(cmd))
4354 adp_cmd = &cmd->data.setadapterparms;
4355 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4356 return -EADDRNOTAVAIL;
4358 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4359 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4360 return -EADDRNOTAVAIL;
4362 eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr);
4366 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4369 struct qeth_cmd_buffer *iob;
4370 struct qeth_ipa_cmd *cmd;
4372 QETH_CARD_TEXT(card, 4, "chgmac");
4374 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4375 SETADP_DATA_SIZEOF(change_addr));
4378 cmd = __ipa_cmd(iob);
4379 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4380 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4381 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4382 card->dev->dev_addr);
4383 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4387 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4389 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4390 struct qeth_reply *reply, unsigned long data)
4392 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4393 struct qeth_set_access_ctrl *access_ctrl_req;
4395 QETH_CARD_TEXT(card, 4, "setaccb");
4397 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4398 QETH_CARD_TEXT_(card, 2, "rc=%d",
4399 cmd->data.setadapterparms.hdr.return_code);
4400 if (cmd->data.setadapterparms.hdr.return_code !=
4401 SET_ACCESS_CTRL_RC_SUCCESS)
4402 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4403 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4404 cmd->data.setadapterparms.hdr.return_code);
4405 switch (qeth_setadpparms_inspect_rc(cmd)) {
4406 case SET_ACCESS_CTRL_RC_SUCCESS:
4407 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
4408 dev_info(&card->gdev->dev,
4409 "QDIO data connection isolation is deactivated\n");
4411 dev_info(&card->gdev->dev,
4412 "QDIO data connection isolation is activated\n");
4414 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4415 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4418 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4419 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4422 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4423 dev_err(&card->gdev->dev, "Adapter does not "
4424 "support QDIO data connection isolation\n");
4426 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4427 dev_err(&card->gdev->dev,
4428 "Adapter is dedicated. "
4429 "QDIO data connection isolation not supported\n");
4431 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4432 dev_err(&card->gdev->dev,
4433 "TSO does not permit QDIO data connection isolation\n");
4435 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4436 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4437 "support reflective relay mode\n");
4439 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4440 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4441 "enabled at the adjacent switch port");
4443 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4444 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4445 "at the adjacent switch failed\n");
4446 /* benign error while disabling ISOLATION_MODE_FWD */
4453 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4454 enum qeth_ipa_isolation_modes mode)
4457 struct qeth_cmd_buffer *iob;
4458 struct qeth_ipa_cmd *cmd;
4459 struct qeth_set_access_ctrl *access_ctrl_req;
4461 QETH_CARD_TEXT(card, 4, "setacctl");
4463 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4464 dev_err(&card->gdev->dev,
4465 "Adapter does not support QDIO data connection isolation\n");
4469 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4470 SETADP_DATA_SIZEOF(set_access_ctrl));
4473 cmd = __ipa_cmd(iob);
4474 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4475 access_ctrl_req->subcmd_code = mode;
4477 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4480 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4481 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4482 rc, CARD_DEVID(card));
4488 void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4490 struct qeth_card *card;
4492 card = dev->ml_priv;
4493 QETH_CARD_TEXT(card, 4, "txtimeo");
4494 qeth_schedule_recovery(card);
4496 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4498 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4500 struct qeth_card *card = dev->ml_priv;
4504 case MII_BMCR: /* Basic mode control register */
4506 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4507 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4508 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4509 rc |= BMCR_SPEED100;
4511 case MII_BMSR: /* Basic mode status register */
4512 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4513 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4516 case MII_PHYSID1: /* PHYS ID 1 */
4517 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4519 rc = (rc >> 5) & 0xFFFF;
4521 case MII_PHYSID2: /* PHYS ID 2 */
4522 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4524 case MII_ADVERTISE: /* Advertisement control reg */
4527 case MII_LPA: /* Link partner ability reg */
4528 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4529 LPA_100BASE4 | LPA_LPACK;
4531 case MII_EXPANSION: /* Expansion register */
4533 case MII_DCOUNTER: /* disconnect counter */
4535 case MII_FCSCOUNTER: /* false carrier counter */
4537 case MII_NWAYTEST: /* N-way auto-neg test register */
4539 case MII_RERRCOUNTER: /* rx error counter */
4540 rc = card->stats.rx_length_errors +
4541 card->stats.rx_frame_errors +
4542 card->stats.rx_fifo_errors;
4544 case MII_SREVISION: /* silicon revision */
4546 case MII_RESV1: /* reserved 1 */
4548 case MII_LBRERROR: /* loopback, rx, bypass error */
4550 case MII_PHYADDR: /* physical address */
4552 case MII_RESV2: /* reserved 2 */
4554 case MII_TPISTATUS: /* TPI status for 10mbps */
4556 case MII_NCONFIG: /* network interface config */
4564 static int qeth_snmp_command_cb(struct qeth_card *card,
4565 struct qeth_reply *reply, unsigned long data)
4567 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4568 struct qeth_arp_query_info *qinfo = reply->param;
4569 struct qeth_ipacmd_setadpparms *adp_cmd;
4570 unsigned int data_len;
4573 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4575 if (cmd->hdr.return_code) {
4576 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4579 if (cmd->data.setadapterparms.hdr.return_code) {
4580 cmd->hdr.return_code =
4581 cmd->data.setadapterparms.hdr.return_code;
4582 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4586 adp_cmd = &cmd->data.setadapterparms;
4587 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4588 if (adp_cmd->hdr.seq_no == 1) {
4589 snmp_data = &adp_cmd->data.snmp;
4591 snmp_data = &adp_cmd->data.snmp.request;
4592 data_len -= offsetof(struct qeth_snmp_cmd, request);
4595 /* check if there is enough room in userspace */
4596 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4597 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4600 QETH_CARD_TEXT_(card, 4, "snore%i",
4601 cmd->data.setadapterparms.hdr.used_total);
4602 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4603 cmd->data.setadapterparms.hdr.seq_no);
4604 /*copy entries to user buffer*/
4605 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4606 qinfo->udata_offset += data_len;
4608 if (cmd->data.setadapterparms.hdr.seq_no <
4609 cmd->data.setadapterparms.hdr.used_total)
4614 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4616 struct qeth_snmp_ureq __user *ureq;
4617 struct qeth_cmd_buffer *iob;
4618 unsigned int req_len;
4619 struct qeth_arp_query_info qinfo = {0, };
4622 QETH_CARD_TEXT(card, 3, "snmpcmd");
4624 if (IS_VM_NIC(card))
4627 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4631 ureq = (struct qeth_snmp_ureq __user *) udata;
4632 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4633 get_user(req_len, &ureq->hdr.req_len))
4636 /* Sanitize user input, to avoid overflows in iob size calculation: */
4637 if (req_len > QETH_BUFSIZE)
4640 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4644 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4645 &ureq->cmd, req_len)) {
4650 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4655 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4657 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4659 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4660 CARD_DEVID(card), rc);
4662 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4670 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4671 struct qeth_reply *reply,
4674 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4675 struct qeth_qoat_priv *priv = reply->param;
4678 QETH_CARD_TEXT(card, 3, "qoatcb");
4679 if (qeth_setadpparms_inspect_rc(cmd))
4682 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4684 if (resdatalen > (priv->buffer_len - priv->response_len))
4687 memcpy(priv->buffer + priv->response_len,
4688 &cmd->data.setadapterparms.hdr, resdatalen);
4689 priv->response_len += resdatalen;
4691 if (cmd->data.setadapterparms.hdr.seq_no <
4692 cmd->data.setadapterparms.hdr.used_total)
4697 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4700 struct qeth_cmd_buffer *iob;
4701 struct qeth_ipa_cmd *cmd;
4702 struct qeth_query_oat *oat_req;
4703 struct qeth_query_oat_data oat_data;
4704 struct qeth_qoat_priv priv;
4707 QETH_CARD_TEXT(card, 3, "qoatcmd");
4709 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4712 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4715 priv.buffer_len = oat_data.buffer_len;
4716 priv.response_len = 0;
4717 priv.buffer = vzalloc(oat_data.buffer_len);
4721 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4722 SETADP_DATA_SIZEOF(query_oat));
4727 cmd = __ipa_cmd(iob);
4728 oat_req = &cmd->data.setadapterparms.data.query_oat;
4729 oat_req->subcmd_code = oat_data.command;
4731 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
4733 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4734 u64_to_user_ptr(oat_data.ptr);
4735 oat_data.response_len = priv.response_len;
4737 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4738 copy_to_user(udata, &oat_data, sizeof(oat_data)))
4747 static int qeth_query_card_info_cb(struct qeth_card *card,
4748 struct qeth_reply *reply, unsigned long data)
4750 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4751 struct qeth_link_info *link_info = reply->param;
4752 struct qeth_query_card_info *card_info;
4754 QETH_CARD_TEXT(card, 2, "qcrdincb");
4755 if (qeth_setadpparms_inspect_rc(cmd))
4758 card_info = &cmd->data.setadapterparms.data.card_info;
4759 netdev_dbg(card->dev,
4760 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
4761 card_info->card_type, card_info->port_mode,
4762 card_info->port_speed);
4764 switch (card_info->port_mode) {
4765 case CARD_INFO_PORTM_FULLDUPLEX:
4766 link_info->duplex = DUPLEX_FULL;
4768 case CARD_INFO_PORTM_HALFDUPLEX:
4769 link_info->duplex = DUPLEX_HALF;
4772 link_info->duplex = DUPLEX_UNKNOWN;
4775 switch (card_info->card_type) {
4776 case CARD_INFO_TYPE_1G_COPPER_A:
4777 case CARD_INFO_TYPE_1G_COPPER_B:
4778 link_info->speed = SPEED_1000;
4779 link_info->port = PORT_TP;
4781 case CARD_INFO_TYPE_1G_FIBRE_A:
4782 case CARD_INFO_TYPE_1G_FIBRE_B:
4783 link_info->speed = SPEED_1000;
4784 link_info->port = PORT_FIBRE;
4786 case CARD_INFO_TYPE_10G_FIBRE_A:
4787 case CARD_INFO_TYPE_10G_FIBRE_B:
4788 link_info->speed = SPEED_10000;
4789 link_info->port = PORT_FIBRE;
4792 switch (card_info->port_speed) {
4793 case CARD_INFO_PORTS_10M:
4794 link_info->speed = SPEED_10;
4796 case CARD_INFO_PORTS_100M:
4797 link_info->speed = SPEED_100;
4799 case CARD_INFO_PORTS_1G:
4800 link_info->speed = SPEED_1000;
4802 case CARD_INFO_PORTS_10G:
4803 link_info->speed = SPEED_10000;
4805 case CARD_INFO_PORTS_25G:
4806 link_info->speed = SPEED_25000;
4809 link_info->speed = SPEED_UNKNOWN;
4812 link_info->port = PORT_OTHER;
4818 int qeth_query_card_info(struct qeth_card *card,
4819 struct qeth_link_info *link_info)
4821 struct qeth_cmd_buffer *iob;
4823 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4824 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4826 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4830 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
4833 static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4834 struct qeth_reply *reply_priv,
4837 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4838 struct qeth_link_info *link_info = reply_priv->param;
4839 struct qeth_query_oat_physical_if *phys_if;
4840 struct qeth_query_oat_reply *reply;
4842 if (qeth_setadpparms_inspect_rc(cmd))
4845 /* Multi-part reply is unexpected, don't bother: */
4846 if (cmd->data.setadapterparms.hdr.used_total > 1)
4849 /* Expect the reply to start with phys_if data: */
4850 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4851 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4852 reply->length < sizeof(*reply))
4855 phys_if = &reply->phys_if;
4857 switch (phys_if->speed_duplex) {
4858 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4859 link_info->speed = SPEED_10;
4860 link_info->duplex = DUPLEX_HALF;
4862 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4863 link_info->speed = SPEED_10;
4864 link_info->duplex = DUPLEX_FULL;
4866 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4867 link_info->speed = SPEED_100;
4868 link_info->duplex = DUPLEX_HALF;
4870 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4871 link_info->speed = SPEED_100;
4872 link_info->duplex = DUPLEX_FULL;
4874 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4875 link_info->speed = SPEED_1000;
4876 link_info->duplex = DUPLEX_HALF;
4878 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4879 link_info->speed = SPEED_1000;
4880 link_info->duplex = DUPLEX_FULL;
4882 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4883 link_info->speed = SPEED_10000;
4884 link_info->duplex = DUPLEX_FULL;
4886 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4887 link_info->speed = SPEED_25000;
4888 link_info->duplex = DUPLEX_FULL;
4890 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4892 link_info->speed = SPEED_UNKNOWN;
4893 link_info->duplex = DUPLEX_UNKNOWN;
4897 switch (phys_if->media_type) {
4898 case QETH_QOAT_PHYS_MEDIA_COPPER:
4899 link_info->port = PORT_TP;
4900 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4902 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
4903 link_info->port = PORT_FIBRE;
4904 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4906 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4907 link_info->port = PORT_FIBRE;
4908 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
4911 link_info->port = PORT_OTHER;
4912 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4919 static void qeth_init_link_info(struct qeth_card *card)
4921 card->info.link_info.duplex = DUPLEX_FULL;
4923 if (IS_IQD(card) || IS_VM_NIC(card)) {
4924 card->info.link_info.speed = SPEED_10000;
4925 card->info.link_info.port = PORT_FIBRE;
4926 card->info.link_info.link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4928 switch (card->info.link_type) {
4929 case QETH_LINK_TYPE_FAST_ETH:
4930 case QETH_LINK_TYPE_LANE_ETH100:
4931 card->info.link_info.speed = SPEED_100;
4932 card->info.link_info.port = PORT_TP;
4934 case QETH_LINK_TYPE_GBIT_ETH:
4935 case QETH_LINK_TYPE_LANE_ETH1000:
4936 card->info.link_info.speed = SPEED_1000;
4937 card->info.link_info.port = PORT_FIBRE;
4939 case QETH_LINK_TYPE_10GBIT_ETH:
4940 card->info.link_info.speed = SPEED_10000;
4941 card->info.link_info.port = PORT_FIBRE;
4943 case QETH_LINK_TYPE_25GBIT_ETH:
4944 card->info.link_info.speed = SPEED_25000;
4945 card->info.link_info.port = PORT_FIBRE;
4948 dev_info(&card->gdev->dev, "Unknown link type %x\n",
4949 card->info.link_type);
4950 card->info.link_info.speed = SPEED_UNKNOWN;
4951 card->info.link_info.port = PORT_OTHER;
4954 card->info.link_info.link_mode = QETH_LINK_MODE_UNKNOWN;
4957 /* Get more accurate data via QUERY OAT: */
4958 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4959 struct qeth_link_info link_info;
4960 struct qeth_cmd_buffer *iob;
4962 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4963 SETADP_DATA_SIZEOF(query_oat));
4965 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
4966 struct qeth_query_oat *oat_req;
4968 oat_req = &cmd->data.setadapterparms.data.query_oat;
4969 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
4971 if (!qeth_send_ipa_cmd(card, iob,
4972 qeth_init_link_info_oat_cb,
4974 if (link_info.speed != SPEED_UNKNOWN)
4975 card->info.link_info.speed = link_info.speed;
4976 if (link_info.duplex != DUPLEX_UNKNOWN)
4977 card->info.link_info.duplex = link_info.duplex;
4978 if (link_info.port != PORT_OTHER)
4979 card->info.link_info.port = link_info.port;
4980 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
4981 card->info.link_info.link_mode = link_info.link_mode;
4988 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4989 * @card: pointer to a qeth_card
4992 * 0, if a MAC address has been set for the card's netdevice
4993 * a return code, for various error conditions
4995 int qeth_vm_request_mac(struct qeth_card *card)
4997 struct diag26c_mac_resp *response;
4998 struct diag26c_mac_req *request;
5001 QETH_CARD_TEXT(card, 2, "vmreqmac");
5003 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
5004 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
5005 if (!request || !response) {
5010 request->resp_buf_len = sizeof(*response);
5011 request->resp_version = DIAG26C_VERSION2;
5012 request->op_code = DIAG26C_GET_MAC;
5013 request->devno = card->info.ddev_devno;
5015 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5016 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
5017 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5020 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
5022 if (request->resp_buf_len < sizeof(*response) ||
5023 response->version != request->resp_version) {
5025 QETH_CARD_TEXT(card, 2, "badresp");
5026 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
5027 sizeof(request->resp_buf_len));
5028 } else if (!is_valid_ether_addr(response->mac)) {
5030 QETH_CARD_TEXT(card, 2, "badmac");
5031 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
5033 eth_hw_addr_set(card->dev, response->mac);
5041 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5043 static void qeth_determine_capabilities(struct qeth_card *card)
5045 struct qeth_channel *channel = &card->data;
5046 struct ccw_device *ddev = channel->ccwdev;
5048 int ddev_offline = 0;
5050 QETH_CARD_TEXT(card, 2, "detcapab");
5051 if (!ddev->online) {
5053 rc = qeth_start_channel(channel);
5055 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5060 rc = qeth_read_conf_data(card);
5062 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5063 CARD_DEVID(card), rc);
5064 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5068 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5070 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5072 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5073 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5074 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5075 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5076 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
5077 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5078 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5079 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5080 dev_info(&card->gdev->dev,
5081 "Completion Queueing supported\n");
5083 card->options.cq = QETH_CQ_NOTAVAILABLE;
5087 if (ddev_offline == 1)
5088 qeth_stop_channel(channel);
5093 static void qeth_read_ccw_conf_data(struct qeth_card *card)
5095 struct qeth_card_info *info = &card->info;
5096 struct ccw_device *cdev = CARD_DDEV(card);
5097 struct ccw_dev_id dev_id;
5099 QETH_CARD_TEXT(card, 2, "ccwconfd");
5100 ccw_device_get_id(cdev, &dev_id);
5102 info->ddev_devno = dev_id.devno;
5103 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5104 !ccw_device_get_iid(cdev, &info->iid) &&
5105 !ccw_device_get_chid(cdev, 0, &info->chid);
5106 info->ssid = dev_id.ssid;
5108 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5109 info->chid, info->chpid);
5111 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5112 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5113 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5114 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5115 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5116 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5117 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5120 static int qeth_qdio_establish(struct qeth_card *card)
5122 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5123 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
5124 struct qeth_qib_parms *qib_parms = NULL;
5125 struct qdio_initialize init_data;
5126 unsigned int no_input_qs = 1;
5130 QETH_CARD_TEXT(card, 2, "qdioest");
5132 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5133 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5137 qeth_fill_qib_parms(card, qib_parms);
5140 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
5141 if (card->options.cq == QETH_CQ_ENABLED) {
5142 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
5146 for (i = 0; i < card->qdio.no_out_queues; i++)
5147 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
5149 memset(&init_data, 0, sizeof(struct qdio_initialize));
5150 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5152 init_data.qib_param_field_format = 0;
5153 init_data.qib_param_field = (void *)qib_parms;
5154 init_data.no_input_qs = no_input_qs;
5155 init_data.no_output_qs = card->qdio.no_out_queues;
5156 init_data.input_handler = qeth_qdio_input_handler;
5157 init_data.output_handler = qeth_qdio_output_handler;
5158 init_data.irq_poll = qeth_qdio_poll;
5159 init_data.int_parm = (unsigned long) card;
5160 init_data.input_sbal_addr_array = in_sbal_ptrs;
5161 init_data.output_sbal_addr_array = out_sbal_ptrs;
5163 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5164 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5165 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5166 init_data.no_output_qs);
5168 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5171 rc = qdio_establish(CARD_DDEV(card), &init_data);
5173 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5174 qdio_free(CARD_DDEV(card));
5178 switch (card->options.cq) {
5179 case QETH_CQ_ENABLED:
5180 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5182 case QETH_CQ_DISABLED:
5183 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5194 static void qeth_core_free_card(struct qeth_card *card)
5196 QETH_CARD_TEXT(card, 2, "freecrd");
5198 unregister_service_level(&card->qeth_service_level);
5199 debugfs_remove_recursive(card->debugfs);
5200 qeth_put_cmd(card->read_cmd);
5201 destroy_workqueue(card->event_wq);
5202 dev_set_drvdata(&card->gdev->dev, NULL);
5206 static void qeth_trace_features(struct qeth_card *card)
5208 QETH_CARD_TEXT(card, 2, "features");
5209 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5210 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5211 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5212 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5213 sizeof(card->info.diagass_support));
5216 static struct ccw_device_id qeth_ids[] = {
5217 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5218 .driver_info = QETH_CARD_TYPE_OSD},
5219 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5220 .driver_info = QETH_CARD_TYPE_IQD},
5221 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5222 .driver_info = QETH_CARD_TYPE_OSM},
5223 #ifdef CONFIG_QETH_OSX
5224 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5225 .driver_info = QETH_CARD_TYPE_OSX},
5229 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5231 static struct ccw_driver qeth_ccw_driver = {
5233 .owner = THIS_MODULE,
5237 .probe = ccwgroup_probe_ccwdev,
5238 .remove = ccwgroup_remove_ccwdev,
5241 static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
5246 QETH_CARD_TEXT(card, 2, "hrdsetup");
5247 atomic_set(&card->force_alloc_skb, 0);
5248 rc = qeth_update_from_chp_desc(card);
5253 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5255 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
5256 qeth_stop_channel(&card->data);
5257 qeth_stop_channel(&card->write);
5258 qeth_stop_channel(&card->read);
5259 qdio_free(CARD_DDEV(card));
5261 rc = qeth_start_channel(&card->read);
5264 rc = qeth_start_channel(&card->write);
5267 rc = qeth_start_channel(&card->data);
5271 if (rc == -ERESTARTSYS) {
5272 QETH_CARD_TEXT(card, 2, "break1");
5275 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5282 qeth_determine_capabilities(card);
5283 qeth_read_ccw_conf_data(card);
5284 qeth_idx_init(card);
5286 rc = qeth_idx_activate_read_channel(card);
5288 QETH_CARD_TEXT(card, 2, "break2");
5291 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5298 rc = qeth_idx_activate_write_channel(card);
5300 QETH_CARD_TEXT(card, 2, "break3");
5303 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
5309 card->read_or_write_problem = 0;
5310 rc = qeth_mpc_initialize(card);
5312 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5316 rc = qeth_send_startlan(card);
5318 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5319 if (rc == -ENETDOWN) {
5320 dev_warn(&card->gdev->dev, "The LAN is offline\n");
5321 *carrier_ok = false;
5329 card->options.ipa4.supported = 0;
5330 card->options.ipa6.supported = 0;
5331 card->options.adp.supported = 0;
5332 card->options.sbp.supported_funcs = 0;
5333 card->info.diagass_support = 0;
5334 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5337 if (qeth_is_supported(card, IPA_IPV6)) {
5338 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5342 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5343 rc = qeth_query_setadapterparms(card);
5345 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
5349 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5350 rc = qeth_query_setdiagass(card);
5352 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5355 qeth_trace_features(card);
5357 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5358 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5359 card->info.hwtrap = 0;
5361 if (card->options.isolation != ISOLATION_MODE_NONE) {
5362 rc = qeth_setadpparms_set_access_ctrl(card,
5363 card->options.isolation);
5368 qeth_init_link_info(card);
5370 rc = qeth_init_qdio_queues(card);
5372 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5378 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5379 "an error on the device\n");
5380 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5381 CARD_DEVID(card), rc);
5385 static int qeth_set_online(struct qeth_card *card,
5386 const struct qeth_discipline *disc)
5391 mutex_lock(&card->conf_mutex);
5392 QETH_CARD_TEXT(card, 2, "setonlin");
5394 rc = qeth_hardsetup_card(card, &carrier_ok);
5396 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5401 qeth_print_status_message(card);
5403 if (card->dev->reg_state != NETREG_REGISTERED)
5404 /* no need for locking / error handling at this early stage: */
5405 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
5407 rc = disc->set_online(card, carrier_ok);
5411 /* let user_space know that device is online */
5412 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5414 mutex_unlock(&card->conf_mutex);
5419 qeth_qdio_clear_card(card, 0);
5420 qeth_clear_working_pool_list(card);
5421 qeth_flush_local_addrs(card);
5423 qeth_stop_channel(&card->data);
5424 qeth_stop_channel(&card->write);
5425 qeth_stop_channel(&card->read);
5426 qdio_free(CARD_DDEV(card));
5428 mutex_unlock(&card->conf_mutex);
5432 int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5437 mutex_lock(&card->conf_mutex);
5438 QETH_CARD_TEXT(card, 3, "setoffl");
5440 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5441 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5442 card->info.hwtrap = 1;
5445 /* cancel any stalled cmd that might block the rtnl: */
5446 qeth_clear_ipacmd_list(card);
5449 card->info.open_when_online = card->dev->flags & IFF_UP;
5450 dev_close(card->dev);
5451 netif_device_detach(card->dev);
5452 netif_carrier_off(card->dev);
5455 cancel_work_sync(&card->rx_mode_work);
5457 disc->set_offline(card);
5459 qeth_qdio_clear_card(card, 0);
5460 qeth_drain_output_queues(card);
5461 qeth_clear_working_pool_list(card);
5462 qeth_flush_local_addrs(card);
5463 card->info.promisc_mode = 0;
5465 rc = qeth_stop_channel(&card->data);
5466 rc2 = qeth_stop_channel(&card->write);
5467 rc3 = qeth_stop_channel(&card->read);
5469 rc = (rc2) ? rc2 : rc3;
5471 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5472 qdio_free(CARD_DDEV(card));
5474 /* let user_space know that device is offline */
5475 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5477 mutex_unlock(&card->conf_mutex);
5480 EXPORT_SYMBOL_GPL(qeth_set_offline);
5482 static int qeth_do_reset(void *data)
5484 const struct qeth_discipline *disc;
5485 struct qeth_card *card = data;
5488 /* Lock-free, other users will block until we are done. */
5489 disc = card->discipline;
5491 QETH_CARD_TEXT(card, 2, "recover1");
5492 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5494 QETH_CARD_TEXT(card, 2, "recover2");
5495 dev_warn(&card->gdev->dev,
5496 "A recovery process has been started for the device\n");
5498 qeth_set_offline(card, disc, true);
5499 rc = qeth_set_online(card, disc);
5501 dev_info(&card->gdev->dev,
5502 "Device successfully recovered!\n");
5504 qeth_set_offline(card, disc, true);
5505 ccwgroup_set_offline(card->gdev, false);
5506 dev_warn(&card->gdev->dev,
5507 "The qeth device driver failed to recover an error on the device\n");
5509 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5510 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5514 #if IS_ENABLED(CONFIG_QETH_L3)
5515 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5516 struct qeth_hdr *hdr)
5518 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5519 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5520 struct net_device *dev = skb->dev;
5522 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5523 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5524 "FAKELL", skb->len);
5528 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5529 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5531 unsigned char tg_addr[ETH_ALEN];
5533 skb_reset_network_header(skb);
5534 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5535 case QETH_CAST_MULTICAST:
5536 if (prot == ETH_P_IP)
5537 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5539 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5540 QETH_CARD_STAT_INC(card, rx_multicast);
5542 case QETH_CAST_BROADCAST:
5543 ether_addr_copy(tg_addr, dev->broadcast);
5544 QETH_CARD_STAT_INC(card, rx_multicast);
5547 if (card->options.sniffer)
5548 skb->pkt_type = PACKET_OTHERHOST;
5549 ether_addr_copy(tg_addr, dev->dev_addr);
5552 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5553 dev_hard_header(skb, dev, prot, tg_addr,
5554 &l3_hdr->next_hop.rx.src_mac, skb->len);
5556 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5560 /* copy VLAN tag from hdr into skb */
5561 if (!card->options.sniffer &&
5562 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5563 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5564 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5566 l3_hdr->next_hop.rx.vlan_id;
5568 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5573 static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5574 bool uses_frags, bool is_cso)
5576 struct napi_struct *napi = &card->napi;
5578 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5579 skb->ip_summed = CHECKSUM_UNNECESSARY;
5580 QETH_CARD_STAT_INC(card, rx_skb_csum);
5582 skb->ip_summed = CHECKSUM_NONE;
5585 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5586 QETH_CARD_STAT_INC(card, rx_packets);
5587 if (skb_is_nonlinear(skb)) {
5588 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5589 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5590 skb_shinfo(skb)->nr_frags);
5594 napi_gro_frags(napi);
5596 skb->protocol = eth_type_trans(skb, skb->dev);
5597 napi_gro_receive(napi, skb);
5601 static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
5603 struct page *page = virt_to_page(data);
5604 unsigned int next_frag;
5606 next_frag = skb_shinfo(skb)->nr_frags;
5608 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5612 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5614 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5617 static int qeth_extract_skb(struct qeth_card *card,
5618 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
5621 struct qeth_priv *priv = netdev_priv(card->dev);
5622 struct qdio_buffer *buffer = qethbuffer->buffer;
5623 struct napi_struct *napi = &card->napi;
5624 struct qdio_buffer_element *element;
5625 unsigned int linear_len = 0;
5626 bool uses_frags = false;
5627 int offset = *__offset;
5628 bool use_rx_sg = false;
5629 unsigned int headroom;
5630 struct qeth_hdr *hdr;
5631 struct sk_buff *skb;
5635 element = &buffer->element[*element_no];
5638 /* qeth_hdr must not cross element boundaries */
5639 while (element->length < offset + sizeof(struct qeth_hdr)) {
5640 if (qeth_is_last_sbale(element))
5646 hdr = phys_to_virt(element->addr) + offset;
5647 offset += sizeof(*hdr);
5650 switch (hdr->hdr.l2.id) {
5651 case QETH_HEADER_TYPE_LAYER2:
5652 skb_len = hdr->hdr.l2.pkt_length;
5653 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5655 linear_len = ETH_HLEN;
5658 case QETH_HEADER_TYPE_LAYER3:
5659 skb_len = hdr->hdr.l3.length;
5660 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5662 if (!IS_LAYER3(card)) {
5663 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5667 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5668 linear_len = ETH_HLEN;
5673 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5674 linear_len = sizeof(struct ipv6hdr);
5676 linear_len = sizeof(struct iphdr);
5677 headroom = ETH_HLEN;
5680 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5681 QETH_CARD_STAT_INC(card, rx_frame_errors);
5683 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5685 /* Can't determine packet length, drop the whole buffer. */
5686 return -EPROTONOSUPPORT;
5689 if (skb_len < linear_len) {
5690 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5694 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5695 (skb_len > READ_ONCE(priv->rx_copybreak) &&
5696 !atomic_read(&card->force_alloc_skb));
5699 /* QETH_CQ_ENABLED only: */
5700 if (qethbuffer->rx_skb &&
5701 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
5702 skb = qethbuffer->rx_skb;
5703 qethbuffer->rx_skb = NULL;
5707 skb = napi_get_frags(napi);
5709 /* -ENOMEM, no point in falling back further. */
5710 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5714 if (skb_tailroom(skb) >= linear_len + headroom) {
5719 netdev_info_once(card->dev,
5720 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5721 linear_len + headroom, skb_tailroom(skb));
5722 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
5725 linear_len = skb_len;
5726 skb = napi_alloc_skb(napi, linear_len + headroom);
5728 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5734 skb_reserve(skb, headroom);
5737 int data_len = min(skb_len, (int)(element->length - offset));
5738 char *data = phys_to_virt(element->addr) + offset;
5740 skb_len -= data_len;
5743 /* Extract data from current element: */
5744 if (skb && data_len) {
5746 unsigned int copy_len;
5748 copy_len = min_t(unsigned int, linear_len,
5751 skb_put_data(skb, data, copy_len);
5752 linear_len -= copy_len;
5753 data_len -= copy_len;
5758 qeth_create_skb_frag(skb, data, data_len);
5761 /* Step forward to next element: */
5763 if (qeth_is_last_sbale(element)) {
5764 QETH_CARD_TEXT(card, 4, "unexeob");
5765 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5768 napi_free_frags(napi);
5771 QETH_CARD_STAT_INC(card,
5781 /* This packet was skipped, go get another one: */
5785 *element_no = element - &buffer->element[0];
5788 #if IS_ENABLED(CONFIG_QETH_L3)
5789 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3)
5790 qeth_l3_rebuild_skb(card, skb, hdr);
5793 qeth_receive_skb(card, skb, uses_frags, is_cso);
5797 static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5798 struct qeth_qdio_buffer *buf, bool *done)
5800 unsigned int work_done = 0;
5803 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
5804 &card->rx.e_offset)) {
5816 static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
5818 struct qeth_rx *ctx = &card->rx;
5819 unsigned int work_done = 0;
5821 while (budget > 0) {
5822 struct qeth_qdio_buffer *buffer;
5823 unsigned int skbs_done = 0;
5826 /* Fetch completed RX buffers: */
5827 if (!card->rx.b_count) {
5828 card->rx.qdio_err = 0;
5830 qdio_inspect_input_queue(CARD_DDEV(card), 0,
5832 &card->rx.qdio_err);
5833 if (card->rx.b_count <= 0) {
5834 card->rx.b_count = 0;
5839 /* Process one completed RX buffer: */
5840 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5841 if (!(card->rx.qdio_err &&
5842 qeth_check_qdio_errors(card, buffer->buffer,
5843 card->rx.qdio_err, "qinerr")))
5844 skbs_done = qeth_extract_skbs(card, budget, buffer,
5849 work_done += skbs_done;
5850 budget -= skbs_done;
5853 QETH_CARD_STAT_INC(card, rx_bufs);
5854 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
5855 buffer->pool_entry = NULL;
5858 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5861 /* Step forward to next buffer: */
5862 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5863 card->rx.buf_element = 0;
5864 card->rx.e_offset = 0;
5871 static void qeth_cq_poll(struct qeth_card *card)
5873 unsigned int work_done = 0;
5875 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5876 unsigned int start, error;
5879 completed = qdio_inspect_input_queue(CARD_DDEV(card), 1, &start,
5884 qeth_qdio_cq_handler(card, error, 1, start, completed);
5885 work_done += completed;
5889 int qeth_poll(struct napi_struct *napi, int budget)
5891 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5892 unsigned int work_done;
5894 work_done = qeth_rx_poll(card, budget);
5896 if (qeth_use_tx_irqs(card)) {
5897 struct qeth_qdio_out_q *queue;
5900 qeth_for_each_output_queue(card, queue, i) {
5901 if (!qeth_out_queue_is_empty(queue))
5902 napi_schedule(&queue->napi);
5906 if (card->options.cq == QETH_CQ_ENABLED)
5910 struct qeth_rx *ctx = &card->rx;
5912 /* Process any substantial refill backlog: */
5913 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5915 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
5916 if (work_done >= budget)
5920 if (napi_complete_done(napi, work_done) &&
5921 qdio_start_irq(CARD_DDEV(card)))
5922 napi_schedule(napi);
5926 EXPORT_SYMBOL_GPL(qeth_poll);
5928 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
5929 unsigned int bidx, unsigned int qdio_error,
5932 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5933 u8 sflags = buffer->buffer->element[15].sflags;
5934 struct qeth_card *card = queue->card;
5935 bool error = !!qdio_error;
5937 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
5938 struct qaob *aob = buffer->aob;
5939 struct qeth_qaob_priv1 *priv;
5940 enum iucv_tx_notify notify;
5943 netdev_WARN_ONCE(card->dev,
5944 "Pending TX buffer %#x without QAOB on TX queue %u\n",
5945 bidx, queue->queue_no);
5946 qeth_schedule_recovery(card);
5950 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5952 priv = (struct qeth_qaob_priv1 *)&aob->user1;
5953 /* QAOB hasn't completed yet: */
5954 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
5955 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5957 /* Prepare the queue slot for immediate re-use: */
5958 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5959 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
5960 QETH_CARD_TEXT(card, 2, "outofbuf");
5961 qeth_schedule_recovery(card);
5964 list_add(&buffer->list_entry, &queue->pending_bufs);
5965 /* Skip clearing the buffer: */
5969 /* QAOB already completed: */
5970 notify = qeth_compute_cq_notification(aob->aorc, 0);
5971 qeth_notify_skbs(queue, buffer, notify);
5972 error = !!aob->aorc;
5973 memset(aob, 0, sizeof(*aob));
5974 } else if (card->options.cq == QETH_CQ_ENABLED) {
5975 qeth_notify_skbs(queue, buffer,
5976 qeth_compute_cq_notification(sflags, 0));
5979 qeth_clear_output_buffer(queue, buffer, error, budget);
5982 static int qeth_tx_poll(struct napi_struct *napi, int budget)
5984 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5985 unsigned int queue_no = queue->queue_no;
5986 struct qeth_card *card = queue->card;
5987 struct net_device *dev = card->dev;
5988 unsigned int work_done = 0;
5989 struct netdev_queue *txq;
5992 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5994 txq = netdev_get_tx_queue(dev, queue_no);
5997 unsigned int start, error, i;
5998 unsigned int packets = 0;
5999 unsigned int bytes = 0;
6002 qeth_tx_complete_pending_bufs(card, queue, false, budget);
6004 if (qeth_out_queue_is_empty(queue)) {
6005 napi_complete(napi);
6009 /* Give the CPU a breather: */
6010 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
6011 QETH_TXQ_STAT_INC(queue, completion_yield);
6012 if (napi_complete_done(napi, 0))
6013 napi_schedule(napi);
6017 completed = qdio_inspect_output_queue(CARD_DDEV(card), queue_no,
6019 if (completed <= 0) {
6020 /* Ensure we see TX completion for pending work: */
6021 if (napi_complete_done(napi, 0) &&
6022 !atomic_read(&queue->set_pci_flags_count))
6023 qeth_tx_arm_timer(queue, queue->rescan_usecs);
6027 for (i = start; i < start + completed; i++) {
6028 struct qeth_qdio_out_buffer *buffer;
6029 unsigned int bidx = QDIO_BUFNR(i);
6031 buffer = queue->bufs[bidx];
6032 packets += buffer->frames;
6033 bytes += buffer->bytes;
6035 qeth_handle_send_error(card, buffer, error);
6037 qeth_iqd_tx_complete(queue, bidx, error, budget);
6039 qeth_clear_output_buffer(queue, buffer, error,
6043 atomic_sub(completed, &queue->used_buffers);
6044 work_done += completed;
6046 netdev_tx_completed_queue(txq, packets, bytes);
6048 qeth_check_outbound_queue(queue);
6050 /* xmit may have observed the full-condition, but not yet
6051 * stopped the txq. In which case the code below won't trigger.
6052 * So before returning, xmit will re-check the txq's fill level
6053 * and wake it up if needed.
6055 if (netif_tx_queue_stopped(txq) &&
6056 !qeth_out_queue_is_full(queue))
6057 netif_tx_wake_queue(txq);
6061 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6063 if (!cmd->hdr.return_code)
6064 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6065 return cmd->hdr.return_code;
6068 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6069 struct qeth_reply *reply,
6072 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6073 struct qeth_ipa_caps *caps = reply->param;
6075 if (qeth_setassparms_inspect_rc(cmd))
6078 caps->supported = cmd->data.setassparms.data.caps.supported;
6079 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6083 int qeth_setassparms_cb(struct qeth_card *card,
6084 struct qeth_reply *reply, unsigned long data)
6086 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6088 QETH_CARD_TEXT(card, 4, "defadpcb");
6090 if (cmd->hdr.return_code)
6093 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6094 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
6095 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
6096 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
6097 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
6100 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
6102 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6103 enum qeth_ipa_funcs ipa_func,
6105 unsigned int data_length,
6106 enum qeth_prot_versions prot)
6108 struct qeth_ipacmd_setassparms *setassparms;
6109 struct qeth_ipacmd_setassparms_hdr *hdr;
6110 struct qeth_cmd_buffer *iob;
6112 QETH_CARD_TEXT(card, 4, "getasscm");
6113 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6115 offsetof(struct qeth_ipacmd_setassparms,
6120 setassparms = &__ipa_cmd(iob)->data.setassparms;
6121 setassparms->assist_no = ipa_func;
6123 hdr = &setassparms->hdr;
6124 hdr->length = sizeof(*hdr) + data_length;
6125 hdr->command_code = cmd_code;
6128 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
6130 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6131 enum qeth_ipa_funcs ipa_func,
6132 u16 cmd_code, u32 *data,
6133 enum qeth_prot_versions prot)
6135 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
6136 struct qeth_cmd_buffer *iob;
6138 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
6139 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
6144 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
6145 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
6147 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
6149 static void qeth_unregister_dbf_views(void)
6153 for (x = 0; x < QETH_DBF_INFOS; x++) {
6154 debug_unregister(qeth_dbf[x].id);
6155 qeth_dbf[x].id = NULL;
6159 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
6161 char dbf_txt_buf[32];
6164 if (!debug_level_enabled(id, level))
6166 va_start(args, fmt);
6167 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6169 debug_text_event(id, level, dbf_txt_buf);
6171 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6173 static int qeth_register_dbf_views(void)
6178 for (x = 0; x < QETH_DBF_INFOS; x++) {
6179 /* register the areas */
6180 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6184 if (qeth_dbf[x].id == NULL) {
6185 qeth_unregister_dbf_views();
6189 /* register a view */
6190 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6192 qeth_unregister_dbf_views();
6196 /* set a passing level */
6197 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6203 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
6205 int qeth_setup_discipline(struct qeth_card *card,
6206 enum qeth_discipline_id discipline)
6210 mutex_lock(&qeth_mod_mutex);
6211 switch (discipline) {
6212 case QETH_DISCIPLINE_LAYER3:
6213 card->discipline = try_then_request_module(
6214 symbol_get(qeth_l3_discipline), "qeth_l3");
6216 case QETH_DISCIPLINE_LAYER2:
6217 card->discipline = try_then_request_module(
6218 symbol_get(qeth_l2_discipline), "qeth_l2");
6223 mutex_unlock(&qeth_mod_mutex);
6225 if (!card->discipline) {
6226 dev_err(&card->gdev->dev, "There is no kernel module to "
6227 "support discipline %d\n", discipline);
6231 rc = card->discipline->setup(card->gdev);
6233 if (discipline == QETH_DISCIPLINE_LAYER2)
6234 symbol_put(qeth_l2_discipline);
6236 symbol_put(qeth_l3_discipline);
6237 card->discipline = NULL;
6242 card->options.layer = discipline;
6246 void qeth_remove_discipline(struct qeth_card *card)
6248 card->discipline->remove(card->gdev);
6250 if (IS_LAYER2(card))
6251 symbol_put(qeth_l2_discipline);
6253 symbol_put(qeth_l3_discipline);
6254 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
6255 card->discipline = NULL;
6258 static const struct device_type qeth_generic_devtype = {
6259 .name = "qeth_generic",
6262 #define DBF_NAME_LEN 20
6264 struct qeth_dbf_entry {
6265 char dbf_name[DBF_NAME_LEN];
6266 debug_info_t *dbf_info;
6267 struct list_head dbf_list;
6270 static LIST_HEAD(qeth_dbf_list);
6271 static DEFINE_MUTEX(qeth_dbf_list_mutex);
6273 static debug_info_t *qeth_get_dbf_entry(char *name)
6275 struct qeth_dbf_entry *entry;
6276 debug_info_t *rc = NULL;
6278 mutex_lock(&qeth_dbf_list_mutex);
6279 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6280 if (strcmp(entry->dbf_name, name) == 0) {
6281 rc = entry->dbf_info;
6285 mutex_unlock(&qeth_dbf_list_mutex);
6289 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6291 struct qeth_dbf_entry *new_entry;
6293 card->debug = debug_register(name, 2, 1, 8);
6295 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6298 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6300 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6303 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
6304 new_entry->dbf_info = card->debug;
6305 mutex_lock(&qeth_dbf_list_mutex);
6306 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6307 mutex_unlock(&qeth_dbf_list_mutex);
6312 debug_unregister(card->debug);
6317 static void qeth_clear_dbf_list(void)
6319 struct qeth_dbf_entry *entry, *tmp;
6321 mutex_lock(&qeth_dbf_list_mutex);
6322 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6323 list_del(&entry->dbf_list);
6324 debug_unregister(entry->dbf_info);
6327 mutex_unlock(&qeth_dbf_list_mutex);
6330 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6332 struct net_device *dev;
6333 struct qeth_priv *priv;
6335 switch (card->info.type) {
6336 case QETH_CARD_TYPE_IQD:
6337 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
6338 ether_setup, QETH_MAX_OUT_QUEUES, 1);
6340 case QETH_CARD_TYPE_OSM:
6341 dev = alloc_etherdev(sizeof(*priv));
6344 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
6350 priv = netdev_priv(dev);
6351 priv->rx_copybreak = QETH_RX_COPYBREAK;
6352 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
6354 dev->ml_priv = card;
6355 dev->watchdog_timeo = QETH_TX_TIMEOUT;
6357 /* initialized when device first goes online: */
6360 SET_NETDEV_DEV(dev, &card->gdev->dev);
6361 netif_carrier_off(dev);
6363 dev->ethtool_ops = &qeth_ethtool_ops;
6364 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6365 dev->hw_features |= NETIF_F_SG;
6366 dev->vlan_features |= NETIF_F_SG;
6368 dev->features |= NETIF_F_SG;
6373 struct net_device *qeth_clone_netdev(struct net_device *orig)
6375 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6380 clone->dev_port = orig->dev_port;
6384 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6386 struct qeth_card *card;
6389 enum qeth_discipline_id enforced_disc;
6390 char dbf_name[DBF_NAME_LEN];
6392 QETH_DBF_TEXT(SETUP, 2, "probedev");
6395 if (!get_device(dev))
6398 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
6400 card = qeth_alloc_card(gdev);
6402 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
6407 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6408 dev_name(&gdev->dev));
6409 card->debug = qeth_get_dbf_entry(dbf_name);
6411 rc = qeth_add_dbf_entry(card, dbf_name);
6416 qeth_setup_card(card);
6417 card->dev = qeth_alloc_netdev(card);
6423 qeth_determine_capabilities(card);
6424 qeth_set_blkt_defaults(card);
6426 card->qdio.in_q = qeth_alloc_qdio_queue();
6427 if (!card->qdio.in_q) {
6432 card->qdio.no_out_queues = card->dev->num_tx_queues;
6433 rc = qeth_update_from_chp_desc(card);
6437 gdev->dev.groups = qeth_dev_groups;
6439 enforced_disc = qeth_enforce_discipline(card);
6440 switch (enforced_disc) {
6441 case QETH_DISCIPLINE_UNDETERMINED:
6442 gdev->dev.type = &qeth_generic_devtype;
6445 card->info.layer_enforced = true;
6446 /* It's so early that we don't need the discipline_mutex yet. */
6447 rc = qeth_setup_discipline(card, enforced_disc);
6449 goto err_setup_disc;
6458 qeth_free_qdio_queue(card->qdio.in_q);
6460 free_netdev(card->dev);
6462 qeth_core_free_card(card);
6468 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6470 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6472 QETH_CARD_TEXT(card, 2, "removedv");
6474 mutex_lock(&card->discipline_mutex);
6475 if (card->discipline)
6476 qeth_remove_discipline(card);
6477 mutex_unlock(&card->discipline_mutex);
6479 qeth_free_qdio_queues(card);
6481 qeth_free_qdio_queue(card->qdio.in_q);
6482 free_netdev(card->dev);
6483 qeth_core_free_card(card);
6484 put_device(&gdev->dev);
6487 static int qeth_core_set_online(struct ccwgroup_device *gdev)
6489 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6491 enum qeth_discipline_id def_discipline;
6493 mutex_lock(&card->discipline_mutex);
6494 if (!card->discipline) {
6495 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6496 QETH_DISCIPLINE_LAYER2;
6497 rc = qeth_setup_discipline(card, def_discipline);
6502 rc = qeth_set_online(card, card->discipline);
6505 mutex_unlock(&card->discipline_mutex);
6509 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6511 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6514 mutex_lock(&card->discipline_mutex);
6515 rc = qeth_set_offline(card, card->discipline, false);
6516 mutex_unlock(&card->discipline_mutex);
6521 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6523 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6525 qeth_set_allowed_threads(card, 0, 1);
6526 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6527 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6528 qeth_qdio_clear_card(card, 0);
6529 qeth_drain_output_queues(card);
6530 qdio_free(CARD_DDEV(card));
6533 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6538 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6541 return err ? err : count;
6543 static DRIVER_ATTR_WO(group);
6545 static struct attribute *qeth_drv_attrs[] = {
6546 &driver_attr_group.attr,
6549 static struct attribute_group qeth_drv_attr_group = {
6550 .attrs = qeth_drv_attrs,
6552 static const struct attribute_group *qeth_drv_attr_groups[] = {
6553 &qeth_drv_attr_group,
6557 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6559 .groups = qeth_drv_attr_groups,
6560 .owner = THIS_MODULE,
6563 .ccw_driver = &qeth_ccw_driver,
6564 .setup = qeth_core_probe_device,
6565 .remove = qeth_core_remove_device,
6566 .set_online = qeth_core_set_online,
6567 .set_offline = qeth_core_set_offline,
6568 .shutdown = qeth_core_shutdown,
6571 int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
6573 struct qeth_card *card = dev->ml_priv;
6577 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6578 rc = qeth_snmp_command(card, data);
6580 case SIOC_QETH_GET_CARD_TYPE:
6581 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6585 case SIOC_QETH_QUERY_OAT:
6586 rc = qeth_query_oat_command(card, data);
6592 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6595 EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
6597 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6599 struct qeth_card *card = dev->ml_priv;
6600 struct mii_ioctl_data *mii_data;
6605 mii_data = if_mii(rq);
6606 mii_data->phy_id = 0;
6609 mii_data = if_mii(rq);
6610 if (mii_data->phy_id != 0)
6613 mii_data->val_out = qeth_mdio_read(dev,
6614 mii_data->phy_id, mii_data->reg_num);
6620 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6623 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6625 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6628 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6629 u32 *features = reply->param;
6631 if (qeth_setassparms_inspect_rc(cmd))
6634 *features = cmd->data.setassparms.data.flags_32bit;
6638 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6639 enum qeth_prot_versions prot)
6641 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6645 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6646 enum qeth_prot_versions prot, u8 *lp2lp)
6648 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6649 struct qeth_cmd_buffer *iob;
6650 struct qeth_ipa_caps caps;
6654 /* some L3 HW requires combined L3+L4 csum offload: */
6655 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6656 cstype == IPA_OUTBOUND_CHECKSUM)
6657 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6659 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6664 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6668 if ((required_features & features) != required_features) {
6669 qeth_set_csum_off(card, cstype, prot);
6673 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6674 SETASS_DATA_SIZEOF(flags_32bit),
6677 qeth_set_csum_off(card, cstype, prot);
6681 if (features & QETH_IPA_CHECKSUM_LP2LP)
6682 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6683 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6684 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6686 qeth_set_csum_off(card, cstype, prot);
6690 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6691 !qeth_ipa_caps_enabled(&caps, required_features)) {
6692 qeth_set_csum_off(card, cstype, prot);
6696 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6697 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6700 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6705 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6706 enum qeth_prot_versions prot, u8 *lp2lp)
6708 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
6709 qeth_set_csum_off(card, cstype, prot);
6712 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6715 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6716 struct qeth_tso_start_data *tso_data = reply->param;
6718 if (qeth_setassparms_inspect_rc(cmd))
6721 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6722 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6726 static int qeth_set_tso_off(struct qeth_card *card,
6727 enum qeth_prot_versions prot)
6729 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6730 IPA_CMD_ASS_STOP, NULL, prot);
6733 static int qeth_set_tso_on(struct qeth_card *card,
6734 enum qeth_prot_versions prot)
6736 struct qeth_tso_start_data tso_data;
6737 struct qeth_cmd_buffer *iob;
6738 struct qeth_ipa_caps caps;
6741 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6742 IPA_CMD_ASS_START, 0, prot);
6746 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6750 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6751 qeth_set_tso_off(card, prot);
6755 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6757 SETASS_DATA_SIZEOF(caps), prot);
6759 qeth_set_tso_off(card, prot);
6763 /* enable TSO capability */
6764 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6765 QETH_IPA_LARGE_SEND_TCP;
6766 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6768 qeth_set_tso_off(card, prot);
6772 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6773 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6774 qeth_set_tso_off(card, prot);
6778 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6783 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6784 enum qeth_prot_versions prot)
6786 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6789 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6791 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6794 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6795 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6796 QETH_PROT_IPV4, NULL);
6797 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6798 /* no/one Offload Assist available, so the rc is trivial */
6801 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6802 QETH_PROT_IPV6, NULL);
6805 /* enable: success if any Assist is active */
6806 return (rc_ipv6) ? rc_ipv4 : 0;
6808 /* disable: failure if any Assist is still active */
6809 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6813 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6814 * @dev: a net_device
6816 void qeth_enable_hw_features(struct net_device *dev)
6818 struct qeth_card *card = dev->ml_priv;
6819 netdev_features_t features;
6821 features = dev->features;
6822 /* force-off any feature that might need an IPA sequence.
6823 * netdev_update_features() will restart them.
6825 dev->features &= ~dev->hw_features;
6826 /* toggle VLAN filter, so that VIDs are re-programmed: */
6827 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6828 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6829 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6831 netdev_update_features(dev);
6832 if (features != dev->features)
6833 dev_warn(&card->gdev->dev,
6834 "Device recovery failed to restore all offload features\n");
6836 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6838 static void qeth_check_restricted_features(struct qeth_card *card,
6839 netdev_features_t changed,
6840 netdev_features_t actual)
6842 netdev_features_t ipv6_features = NETIF_F_TSO6;
6843 netdev_features_t ipv4_features = NETIF_F_TSO;
6845 if (!card->info.has_lp2lp_cso_v6)
6846 ipv6_features |= NETIF_F_IPV6_CSUM;
6847 if (!card->info.has_lp2lp_cso_v4)
6848 ipv4_features |= NETIF_F_IP_CSUM;
6850 if ((changed & ipv6_features) && !(actual & ipv6_features))
6851 qeth_flush_local_addrs6(card);
6852 if ((changed & ipv4_features) && !(actual & ipv4_features))
6853 qeth_flush_local_addrs4(card);
6856 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6858 struct qeth_card *card = dev->ml_priv;
6859 netdev_features_t changed = dev->features ^ features;
6862 QETH_CARD_TEXT(card, 2, "setfeat");
6863 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6865 if ((changed & NETIF_F_IP_CSUM)) {
6866 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6867 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6868 &card->info.has_lp2lp_cso_v4);
6870 changed ^= NETIF_F_IP_CSUM;
6872 if (changed & NETIF_F_IPV6_CSUM) {
6873 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6874 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6875 &card->info.has_lp2lp_cso_v6);
6877 changed ^= NETIF_F_IPV6_CSUM;
6879 if (changed & NETIF_F_RXCSUM) {
6880 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6882 changed ^= NETIF_F_RXCSUM;
6884 if (changed & NETIF_F_TSO) {
6885 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6888 changed ^= NETIF_F_TSO;
6890 if (changed & NETIF_F_TSO6) {
6891 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6894 changed ^= NETIF_F_TSO6;
6897 qeth_check_restricted_features(card, dev->features ^ features,
6898 dev->features ^ changed);
6900 /* everything changed successfully? */
6901 if ((dev->features ^ features) == changed)
6903 /* something went wrong. save changed features and return error */
6904 dev->features ^= changed;
6907 EXPORT_SYMBOL_GPL(qeth_set_features);
6909 netdev_features_t qeth_fix_features(struct net_device *dev,
6910 netdev_features_t features)
6912 struct qeth_card *card = dev->ml_priv;
6914 QETH_CARD_TEXT(card, 2, "fixfeat");
6915 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6916 features &= ~NETIF_F_IP_CSUM;
6917 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6918 features &= ~NETIF_F_IPV6_CSUM;
6919 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6920 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6921 features &= ~NETIF_F_RXCSUM;
6922 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6923 features &= ~NETIF_F_TSO;
6924 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6925 features &= ~NETIF_F_TSO6;
6927 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6930 EXPORT_SYMBOL_GPL(qeth_fix_features);
6932 netdev_features_t qeth_features_check(struct sk_buff *skb,
6933 struct net_device *dev,
6934 netdev_features_t features)
6936 struct qeth_card *card = dev->ml_priv;
6938 /* Traffic with local next-hop is not eligible for some offloads: */
6939 if (skb->ip_summed == CHECKSUM_PARTIAL &&
6940 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
6941 netdev_features_t restricted = 0;
6943 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
6944 restricted |= NETIF_F_ALL_TSO;
6946 switch (vlan_get_protocol(skb)) {
6947 case htons(ETH_P_IP):
6948 if (!card->info.has_lp2lp_cso_v4)
6949 restricted |= NETIF_F_IP_CSUM;
6951 if (restricted && qeth_next_hop_is_local_v4(card, skb))
6952 features &= ~restricted;
6954 case htons(ETH_P_IPV6):
6955 if (!card->info.has_lp2lp_cso_v6)
6956 restricted |= NETIF_F_IPV6_CSUM;
6958 if (restricted && qeth_next_hop_is_local_v6(card, skb))
6959 features &= ~restricted;
6966 /* GSO segmentation builds skbs with
6967 * a (small) linear part for the headers, and
6968 * page frags for the data.
6969 * Compared to a linear skb, the header-only part consumes an
6970 * additional buffer element. This reduces buffer utilization, and
6971 * hurts throughput. So compress small segments into one element.
6973 if (netif_needs_gso(skb, features)) {
6974 /* match skb_segment(): */
6975 unsigned int doffset = skb->data - skb_mac_header(skb);
6976 unsigned int hsize = skb_shinfo(skb)->gso_size;
6977 unsigned int hroom = skb_headroom(skb);
6979 /* linearize only if resulting skb allocations are order-0: */
6980 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6981 features &= ~NETIF_F_SG;
6984 return vlan_features_check(skb, features);
6986 EXPORT_SYMBOL_GPL(qeth_features_check);
6988 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6990 struct qeth_card *card = dev->ml_priv;
6991 struct qeth_qdio_out_q *queue;
6994 QETH_CARD_TEXT(card, 5, "getstat");
6996 stats->rx_packets = card->stats.rx_packets;
6997 stats->rx_bytes = card->stats.rx_bytes;
6998 stats->rx_errors = card->stats.rx_length_errors +
6999 card->stats.rx_frame_errors +
7000 card->stats.rx_fifo_errors;
7001 stats->rx_dropped = card->stats.rx_dropped_nomem +
7002 card->stats.rx_dropped_notsupp +
7003 card->stats.rx_dropped_runt;
7004 stats->multicast = card->stats.rx_multicast;
7005 stats->rx_length_errors = card->stats.rx_length_errors;
7006 stats->rx_frame_errors = card->stats.rx_frame_errors;
7007 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
7009 for (i = 0; i < card->qdio.no_out_queues; i++) {
7010 queue = card->qdio.out_qs[i];
7012 stats->tx_packets += queue->stats.tx_packets;
7013 stats->tx_bytes += queue->stats.tx_bytes;
7014 stats->tx_errors += queue->stats.tx_errors;
7015 stats->tx_dropped += queue->stats.tx_dropped;
7018 EXPORT_SYMBOL_GPL(qeth_get_stats64);
7020 #define TC_IQD_UCAST 0
7021 static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
7022 unsigned int ucast_txqs)
7026 /* IQD requires mcast traffic to be placed on a dedicated queue, and
7027 * qeth_iqd_select_queue() deals with this.
7028 * For unicast traffic, we defer the queue selection to the stack.
7029 * By installing a trivial prio map that spans over only the unicast
7030 * queues, we can encourage the stack to spread the ucast traffic evenly
7031 * without selecting the mcast queue.
7034 /* One traffic class, spanning over all active ucast queues: */
7035 netdev_set_num_tc(dev, 1);
7036 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
7037 QETH_IQD_MIN_UCAST_TXQ);
7039 /* Map all priorities to this traffic class: */
7040 for (prio = 0; prio <= TC_BITMASK; prio++)
7041 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7044 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7046 struct net_device *dev = card->dev;
7049 /* Per netif_setup_tc(), adjust the mapping first: */
7051 qeth_iqd_set_prio_tc_map(dev, count - 1);
7053 rc = netif_set_real_num_tx_queues(dev, count);
7055 if (rc && IS_IQD(card))
7056 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7060 EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
7062 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7063 u8 cast_type, struct net_device *sb_dev)
7067 if (cast_type != RTN_UNICAST)
7068 return QETH_IQD_MCAST_TXQ;
7069 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7070 return QETH_IQD_MIN_UCAST_TXQ;
7072 txq = netdev_pick_tx(dev, skb, sb_dev);
7073 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
7075 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7077 u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
7078 struct net_device *sb_dev)
7080 struct qeth_card *card = dev->ml_priv;
7082 if (qeth_uses_tx_prio_queueing(card))
7083 return qeth_get_priority_queue(card, skb);
7085 return netdev_pick_tx(dev, skb, sb_dev);
7087 EXPORT_SYMBOL_GPL(qeth_osa_select_queue);
7089 int qeth_open(struct net_device *dev)
7091 struct qeth_card *card = dev->ml_priv;
7092 struct qeth_qdio_out_q *queue;
7095 QETH_CARD_TEXT(card, 4, "qethopen");
7097 card->data.state = CH_STATE_UP;
7098 netif_tx_start_all_queues(dev);
7101 qeth_for_each_output_queue(card, queue, i) {
7102 netif_napi_add_tx(dev, &queue->napi, qeth_tx_poll);
7103 napi_enable(&queue->napi);
7104 napi_schedule(&queue->napi);
7107 napi_enable(&card->napi);
7108 napi_schedule(&card->napi);
7109 /* kick-start the NAPI softirq: */
7114 EXPORT_SYMBOL_GPL(qeth_open);
7116 int qeth_stop(struct net_device *dev)
7118 struct qeth_card *card = dev->ml_priv;
7119 struct qeth_qdio_out_q *queue;
7122 QETH_CARD_TEXT(card, 4, "qethstop");
7124 napi_disable(&card->napi);
7125 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7126 qdio_stop_irq(CARD_DDEV(card));
7128 /* Quiesce the NAPI instances: */
7129 qeth_for_each_output_queue(card, queue, i)
7130 napi_disable(&queue->napi);
7132 /* Stop .ndo_start_xmit, might still access queue->napi. */
7133 netif_tx_disable(dev);
7135 qeth_for_each_output_queue(card, queue, i) {
7136 del_timer_sync(&queue->timer);
7137 /* Queues may get re-allocated, so remove the NAPIs. */
7138 netif_napi_del(&queue->napi);
7143 EXPORT_SYMBOL_GPL(qeth_stop);
7145 static int __init qeth_core_init(void)
7149 pr_info("loading core functions\n");
7151 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7153 rc = qeth_register_dbf_views();
7156 qeth_core_root_dev = root_device_register("qeth");
7157 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
7160 qeth_core_header_cache =
7161 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7162 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7164 if (!qeth_core_header_cache) {
7168 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7169 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7170 if (!qeth_qdio_outbuf_cache) {
7175 qeth_qaob_cache = kmem_cache_create("qeth_qaob",
7176 sizeof(struct qaob),
7177 sizeof(struct qaob),
7179 if (!qeth_qaob_cache) {
7184 rc = ccw_driver_register(&qeth_ccw_driver);
7187 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7194 ccw_driver_unregister(&qeth_ccw_driver);
7196 kmem_cache_destroy(qeth_qaob_cache);
7198 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7200 kmem_cache_destroy(qeth_core_header_cache);
7202 root_device_unregister(qeth_core_root_dev);
7204 qeth_unregister_dbf_views();
7206 debugfs_remove_recursive(qeth_debugfs_root);
7207 pr_err("Initializing the qeth device driver failed\n");
7211 static void __exit qeth_core_exit(void)
7213 qeth_clear_dbf_list();
7214 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7215 ccw_driver_unregister(&qeth_ccw_driver);
7216 kmem_cache_destroy(qeth_qaob_cache);
7217 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7218 kmem_cache_destroy(qeth_core_header_cache);
7219 root_device_unregister(qeth_core_root_dev);
7220 qeth_unregister_dbf_views();
7221 debugfs_remove_recursive(qeth_debugfs_root);
7222 pr_info("core functions removed\n");
7225 module_init(qeth_core_init);
7226 module_exit(qeth_core_exit);
7227 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7228 MODULE_DESCRIPTION("qeth core functions");
7229 MODULE_LICENSE("GPL");