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 = virt_to_dma32(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 void qeth_default_link_info(struct qeth_card *card)
768 struct qeth_link_info *link_info = &card->info.link_info;
770 QETH_CARD_TEXT(card, 2, "dftlinfo");
771 link_info->duplex = DUPLEX_FULL;
773 if (IS_IQD(card) || IS_VM_NIC(card)) {
774 link_info->speed = SPEED_10000;
775 link_info->port = PORT_FIBRE;
776 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
778 switch (card->info.link_type) {
779 case QETH_LINK_TYPE_FAST_ETH:
780 case QETH_LINK_TYPE_LANE_ETH100:
781 link_info->speed = SPEED_100;
782 link_info->port = PORT_TP;
784 case QETH_LINK_TYPE_GBIT_ETH:
785 case QETH_LINK_TYPE_LANE_ETH1000:
786 link_info->speed = SPEED_1000;
787 link_info->port = PORT_FIBRE;
789 case QETH_LINK_TYPE_10GBIT_ETH:
790 link_info->speed = SPEED_10000;
791 link_info->port = PORT_FIBRE;
793 case QETH_LINK_TYPE_25GBIT_ETH:
794 link_info->speed = SPEED_25000;
795 link_info->port = PORT_FIBRE;
798 dev_info(&card->gdev->dev,
799 "Unknown link type %x\n",
800 card->info.link_type);
801 link_info->speed = SPEED_UNKNOWN;
802 link_info->port = PORT_OTHER;
805 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
809 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
810 struct qeth_ipa_cmd *cmd)
812 QETH_CARD_TEXT(card, 5, "chkipad");
814 if (IS_IPA_REPLY(cmd)) {
815 if (cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
816 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
820 /* handle unsolicited event: */
821 switch (cmd->hdr.command) {
822 case IPA_CMD_STOPLAN:
823 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
824 dev_err(&card->gdev->dev,
825 "Adjacent port of interface %s is no longer in reflective relay mode, trigger recovery\n",
826 netdev_name(card->dev));
827 /* Set offline, then probably fail to set online: */
828 qeth_schedule_recovery(card);
830 /* stay online for subsequent STARTLAN */
831 dev_warn(&card->gdev->dev,
832 "The link for interface %s on CHPID 0x%X failed\n",
833 netdev_name(card->dev), card->info.chpid);
834 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
835 netif_carrier_off(card->dev);
836 qeth_default_link_info(card);
839 case IPA_CMD_STARTLAN:
840 dev_info(&card->gdev->dev,
841 "The link for %s on CHPID 0x%X has been restored\n",
842 netdev_name(card->dev), card->info.chpid);
843 if (card->info.hwtrap)
844 card->info.hwtrap = 2;
845 qeth_schedule_recovery(card);
847 case IPA_CMD_SETBRIDGEPORT_IQD:
848 case IPA_CMD_SETBRIDGEPORT_OSA:
849 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
850 if (card->discipline->control_event_handler(card, cmd))
853 case IPA_CMD_REGISTER_LOCAL_ADDR:
854 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
855 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
856 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
857 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
859 QETH_CARD_TEXT(card, 3, "irla");
861 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
862 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
863 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
864 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
865 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
867 QETH_CARD_TEXT(card, 3, "urla");
870 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
875 static void qeth_clear_ipacmd_list(struct qeth_card *card)
877 struct qeth_cmd_buffer *iob;
880 QETH_CARD_TEXT(card, 4, "clipalst");
882 spin_lock_irqsave(&card->lock, flags);
883 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
884 qeth_notify_cmd(iob, -ECANCELED);
885 spin_unlock_irqrestore(&card->lock, flags);
888 static int qeth_check_idx_response(struct qeth_card *card,
889 unsigned char *buffer)
891 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
892 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
893 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
895 QETH_CARD_TEXT(card, 2, "ckidxres");
896 QETH_CARD_TEXT(card, 2, " idxterm");
897 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
898 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
899 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
900 dev_err(&card->gdev->dev,
901 "The device does not support the configured transport mode\n");
902 return -EPROTONOSUPPORT;
909 static void qeth_release_buffer_cb(struct qeth_card *card,
910 struct qeth_cmd_buffer *iob,
911 unsigned int data_length)
916 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
918 qeth_notify_cmd(iob, rc);
922 static struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
924 unsigned int ccws, long timeout)
926 struct qeth_cmd_buffer *iob;
928 if (length > QETH_BUFSIZE)
931 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
935 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
936 GFP_KERNEL | GFP_DMA);
942 init_completion(&iob->done);
943 spin_lock_init(&iob->lock);
944 refcount_set(&iob->ref_count, 1);
945 iob->channel = channel;
946 iob->timeout = timeout;
947 iob->length = length;
951 static void qeth_issue_next_read_cb(struct qeth_card *card,
952 struct qeth_cmd_buffer *iob,
953 unsigned int data_length)
955 struct qeth_cmd_buffer *request = NULL;
956 struct qeth_ipa_cmd *cmd = NULL;
957 struct qeth_reply *reply = NULL;
958 struct qeth_cmd_buffer *tmp;
962 QETH_CARD_TEXT(card, 4, "sndctlcb");
963 rc = qeth_check_idx_response(card, iob->data);
968 qeth_schedule_recovery(card);
971 qeth_clear_ipacmd_list(card);
975 cmd = __ipa_reply(iob);
977 cmd = qeth_check_ipa_data(card, cmd);
982 /* match against pending cmd requests */
983 spin_lock_irqsave(&card->lock, flags);
984 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
985 if (tmp->match && tmp->match(tmp, iob)) {
987 /* take the object outside the lock */
988 qeth_get_cmd(request);
992 spin_unlock_irqrestore(&card->lock, flags);
997 reply = &request->reply;
998 if (!reply->callback) {
1003 spin_lock_irqsave(&request->lock, flags);
1005 /* Bail out when the requestor has already left: */
1008 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
1009 (unsigned long)iob);
1010 spin_unlock_irqrestore(&request->lock, flags);
1014 qeth_notify_cmd(request, rc);
1015 qeth_put_cmd(request);
1017 memcpy(&card->seqno.pdu_hdr_ack,
1018 QETH_PDU_HEADER_SEQ_NO(iob->data),
1019 QETH_SEQ_NO_LENGTH);
1020 __qeth_issue_next_read(card);
1025 static int qeth_set_thread_start_bit(struct qeth_card *card,
1026 unsigned long thread)
1028 unsigned long flags;
1031 spin_lock_irqsave(&card->thread_mask_lock, flags);
1032 if (!(card->thread_allowed_mask & thread))
1034 else if (card->thread_start_mask & thread)
1037 card->thread_start_mask |= thread;
1038 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1043 static void qeth_clear_thread_start_bit(struct qeth_card *card,
1044 unsigned long thread)
1046 unsigned long flags;
1048 spin_lock_irqsave(&card->thread_mask_lock, flags);
1049 card->thread_start_mask &= ~thread;
1050 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1051 wake_up(&card->wait_q);
1054 static void qeth_clear_thread_running_bit(struct qeth_card *card,
1055 unsigned long thread)
1057 unsigned long flags;
1059 spin_lock_irqsave(&card->thread_mask_lock, flags);
1060 card->thread_running_mask &= ~thread;
1061 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1062 wake_up_all(&card->wait_q);
1065 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1067 unsigned long flags;
1070 spin_lock_irqsave(&card->thread_mask_lock, flags);
1071 if (card->thread_start_mask & thread) {
1072 if ((card->thread_allowed_mask & thread) &&
1073 !(card->thread_running_mask & thread)) {
1075 card->thread_start_mask &= ~thread;
1076 card->thread_running_mask |= thread;
1080 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1084 static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1088 wait_event(card->wait_q,
1089 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1093 int qeth_schedule_recovery(struct qeth_card *card)
1097 QETH_CARD_TEXT(card, 2, "startrec");
1099 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1101 schedule_work(&card->kernel_thread_starter);
1106 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1112 sense = (char *) irb->ecw;
1113 cstat = irb->scsw.cmd.cstat;
1114 dstat = irb->scsw.cmd.dstat;
1116 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1117 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1118 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1119 QETH_CARD_TEXT(card, 2, "CGENCHK");
1120 dev_warn(&cdev->dev, "The qeth device driver "
1121 "failed to recover an error on the device\n");
1122 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1123 CCW_DEVID(cdev), dstat, cstat);
1124 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1129 if (dstat & DEV_STAT_UNIT_CHECK) {
1130 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1131 SENSE_RESETTING_EVENT_FLAG) {
1132 QETH_CARD_TEXT(card, 2, "REVIND");
1135 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1136 SENSE_COMMAND_REJECT_FLAG) {
1137 QETH_CARD_TEXT(card, 2, "CMDREJi");
1140 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1141 QETH_CARD_TEXT(card, 2, "AFFE");
1144 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1145 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1148 QETH_CARD_TEXT(card, 2, "DGENCHK");
1154 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
1160 switch (PTR_ERR(irb)) {
1162 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1164 QETH_CARD_TEXT(card, 2, "ckirberr");
1165 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1168 dev_warn(&cdev->dev, "A hardware operation timed out"
1169 " on the device\n");
1170 QETH_CARD_TEXT(card, 2, "ckirberr");
1171 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1174 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1175 PTR_ERR(irb), CCW_DEVID(cdev));
1176 QETH_CARD_TEXT(card, 2, "ckirberr");
1177 QETH_CARD_TEXT(card, 2, " rc???");
1178 return PTR_ERR(irb);
1182 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1187 struct qeth_cmd_buffer *iob = NULL;
1188 struct ccwgroup_device *gdev;
1189 struct qeth_channel *channel;
1190 struct qeth_card *card;
1192 /* while we hold the ccwdev lock, this stays valid: */
1193 gdev = dev_get_drvdata(&cdev->dev);
1194 card = dev_get_drvdata(&gdev->dev);
1196 QETH_CARD_TEXT(card, 5, "irq");
1198 if (card->read.ccwdev == cdev) {
1199 channel = &card->read;
1200 QETH_CARD_TEXT(card, 5, "read");
1201 } else if (card->write.ccwdev == cdev) {
1202 channel = &card->write;
1203 QETH_CARD_TEXT(card, 5, "write");
1205 channel = &card->data;
1206 QETH_CARD_TEXT(card, 5, "data");
1210 QETH_CARD_TEXT(card, 5, "irqunsol");
1211 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1212 QETH_CARD_TEXT(card, 5, "irqunexp");
1215 "Received IRQ with intparm %lx, expected %px\n",
1216 intparm, channel->active_cmd);
1217 if (channel->active_cmd)
1218 qeth_cancel_cmd(channel->active_cmd, -EIO);
1220 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1223 qeth_unlock_channel(card, channel);
1225 rc = qeth_check_irb_error(card, cdev, irb);
1227 /* IO was terminated, free its resources. */
1229 qeth_cancel_cmd(iob, rc);
1233 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
1234 channel->state = CH_STATE_STOPPED;
1235 wake_up(&card->wait_q);
1238 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
1239 channel->state = CH_STATE_HALTED;
1240 wake_up(&card->wait_q);
1243 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1244 SCSW_FCTL_HALT_FUNC))) {
1245 qeth_cancel_cmd(iob, -ECANCELED);
1249 cstat = irb->scsw.cmd.cstat;
1250 dstat = irb->scsw.cmd.dstat;
1252 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1253 (dstat & DEV_STAT_UNIT_CHECK) ||
1255 if (irb->esw.esw0.erw.cons) {
1256 dev_warn(&channel->ccwdev->dev,
1257 "The qeth device driver failed to recover "
1258 "an error on the device\n");
1259 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1260 CCW_DEVID(channel->ccwdev), cstat,
1262 print_hex_dump(KERN_WARNING, "qeth: irb ",
1263 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1264 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1265 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1268 rc = qeth_get_problem(card, cdev, irb);
1270 card->read_or_write_problem = 1;
1272 qeth_cancel_cmd(iob, rc);
1273 qeth_clear_ipacmd_list(card);
1274 qeth_schedule_recovery(card);
1281 if (irb->scsw.cmd.count > iob->length) {
1282 qeth_cancel_cmd(iob, -EIO);
1286 iob->callback(card, iob,
1287 iob->length - irb->scsw.cmd.count);
1291 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1292 struct qeth_qdio_out_buffer *buf,
1293 enum iucv_tx_notify notification)
1295 struct sk_buff *skb;
1297 skb_queue_walk(&buf->skb_list, skb) {
1298 struct sock *sk = skb->sk;
1300 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1301 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1302 if (sk && sk->sk_family == PF_IUCV)
1303 iucv_sk(sk)->sk_txnotify(sk, notification);
1307 static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1308 struct qeth_qdio_out_buffer *buf, bool error,
1311 struct sk_buff *skb;
1314 if (buf->next_element_to_fill == 0)
1317 QETH_TXQ_STAT_INC(queue, bufs);
1318 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1320 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1322 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1323 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1326 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1327 unsigned int bytes = qdisc_pkt_len(skb);
1328 bool is_tso = skb_is_gso(skb);
1329 unsigned int packets;
1331 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1333 if (skb->ip_summed == CHECKSUM_PARTIAL)
1334 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1335 if (skb_is_nonlinear(skb))
1336 QETH_TXQ_STAT_INC(queue, skbs_sg);
1338 QETH_TXQ_STAT_INC(queue, skbs_tso);
1339 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1343 napi_consume_skb(skb, budget);
1347 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1348 struct qeth_qdio_out_buffer *buf,
1349 bool error, int budget)
1353 /* is PCI flag set on buffer? */
1354 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
1355 atomic_dec(&queue->set_pci_flags_count);
1356 QETH_TXQ_STAT_INC(queue, completion_irq);
1359 qeth_tx_complete_buf(queue, buf, error, budget);
1361 for (i = 0; i < queue->max_elements; ++i) {
1362 void *data = dma64_to_virt(buf->buffer->element[i].addr);
1364 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
1365 kmem_cache_free(qeth_core_header_cache, data);
1368 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1369 buf->next_element_to_fill = 0;
1372 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1375 static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1378 kmem_cache_free(qeth_qaob_cache, buf->aob);
1379 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1382 static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1383 struct qeth_qdio_out_q *queue,
1384 bool drain, int budget)
1386 struct qeth_qdio_out_buffer *buf, *tmp;
1388 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
1389 struct qeth_qaob_priv1 *priv;
1390 struct qaob *aob = buf->aob;
1391 enum iucv_tx_notify notify;
1394 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1395 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
1396 QETH_CARD_TEXT(card, 5, "fp");
1397 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1399 notify = drain ? TX_NOTIFY_GENERALERROR :
1400 qeth_compute_cq_notification(aob->aorc, 1);
1401 qeth_notify_skbs(queue, buf, notify);
1402 qeth_tx_complete_buf(queue, buf, drain, budget);
1405 i < aob->sb_count && i < queue->max_elements;
1407 void *data = dma64_to_virt(aob->sba[i]);
1409 if (test_bit(i, buf->from_kmem_cache) && data)
1410 kmem_cache_free(qeth_core_header_cache,
1414 list_del(&buf->list_entry);
1415 qeth_free_out_buf(buf);
1420 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1424 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
1426 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1430 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1432 qeth_free_out_buf(q->bufs[j]);
1438 static void qeth_drain_output_queues(struct qeth_card *card)
1442 QETH_CARD_TEXT(card, 2, "clearqdbf");
1443 /* clear outbound buffers to free skbs */
1444 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1445 if (card->qdio.out_qs[i])
1446 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1450 static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1452 unsigned int max = single ? 1 : card->dev->num_tx_queues;
1454 if (card->qdio.no_out_queues == max)
1457 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1458 qeth_free_qdio_queues(card);
1460 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
1461 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1463 card->qdio.no_out_queues = max;
1466 static int qeth_update_from_chp_desc(struct qeth_card *card)
1468 struct ccw_device *ccwdev;
1469 struct channel_path_desc_fmt0 *chp_dsc;
1471 QETH_CARD_TEXT(card, 2, "chp_desc");
1473 ccwdev = card->data.ccwdev;
1474 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1478 card->info.func_level = 0x4100 + chp_dsc->desc;
1480 if (IS_OSD(card) || IS_OSX(card))
1481 /* CHPP field bit 6 == 1 -> single queue */
1482 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1485 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1486 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1490 static void qeth_init_qdio_info(struct qeth_card *card)
1492 QETH_CARD_TEXT(card, 4, "intqdinf");
1493 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1494 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1495 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1498 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1500 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1502 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1503 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1504 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1505 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1508 static void qeth_set_initial_options(struct qeth_card *card)
1510 card->options.route4.type = NO_ROUTER;
1511 card->options.route6.type = NO_ROUTER;
1512 card->options.isolation = ISOLATION_MODE_NONE;
1513 card->options.cq = QETH_CQ_DISABLED;
1514 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1517 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1519 unsigned long flags;
1522 spin_lock_irqsave(&card->thread_mask_lock, flags);
1523 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1524 (u8) card->thread_start_mask,
1525 (u8) card->thread_allowed_mask,
1526 (u8) card->thread_running_mask);
1527 rc = (card->thread_start_mask & thread);
1528 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1532 static int qeth_do_reset(void *data);
1533 static void qeth_start_kernel_thread(struct work_struct *work)
1535 struct task_struct *ts;
1536 struct qeth_card *card = container_of(work, struct qeth_card,
1537 kernel_thread_starter);
1538 QETH_CARD_TEXT(card, 2, "strthrd");
1540 if (card->read.state != CH_STATE_UP &&
1541 card->write.state != CH_STATE_UP)
1543 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1544 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
1546 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1547 qeth_clear_thread_running_bit(card,
1548 QETH_RECOVER_THREAD);
1553 static void qeth_buffer_reclaim_work(struct work_struct *);
1554 static void qeth_setup_card(struct qeth_card *card)
1556 QETH_CARD_TEXT(card, 2, "setupcrd");
1558 card->info.type = CARD_RDEV(card)->id.driver_info;
1559 card->state = CARD_STATE_DOWN;
1560 spin_lock_init(&card->lock);
1561 spin_lock_init(&card->thread_mask_lock);
1562 mutex_init(&card->conf_mutex);
1563 mutex_init(&card->discipline_mutex);
1564 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1565 INIT_LIST_HEAD(&card->cmd_waiter_list);
1566 init_waitqueue_head(&card->wait_q);
1567 qeth_set_initial_options(card);
1568 /* IP address takeover */
1569 INIT_LIST_HEAD(&card->ipato.entries);
1570 qeth_init_qdio_info(card);
1571 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1572 hash_init(card->rx_mode_addrs);
1573 hash_init(card->local_addrs4);
1574 hash_init(card->local_addrs6);
1575 spin_lock_init(&card->local_addrs4_lock);
1576 spin_lock_init(&card->local_addrs6_lock);
1579 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1581 struct qeth_card *card = container_of(slr, struct qeth_card,
1582 qeth_service_level);
1583 if (card->info.mcl_level[0])
1584 seq_printf(m, "qeth: %s firmware level %s\n",
1585 CARD_BUS_ID(card), card->info.mcl_level);
1588 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1590 struct qeth_card *card;
1592 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1593 card = kzalloc(sizeof(*card), GFP_KERNEL);
1596 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1599 dev_set_drvdata(&gdev->dev, card);
1600 CARD_RDEV(card) = gdev->cdev[0];
1601 CARD_WDEV(card) = gdev->cdev[1];
1602 CARD_DDEV(card) = gdev->cdev[2];
1604 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1605 dev_name(&gdev->dev));
1606 if (!card->event_wq)
1609 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1610 if (!card->read_cmd)
1613 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1615 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1616 &qeth_debugfs_local_addr_fops);
1618 card->qeth_service_level.seq_print = qeth_core_sl_print;
1619 register_service_level(&card->qeth_service_level);
1623 destroy_workqueue(card->event_wq);
1625 dev_set_drvdata(&gdev->dev, NULL);
1631 static int qeth_clear_channel(struct qeth_card *card,
1632 struct qeth_channel *channel)
1636 QETH_CARD_TEXT(card, 3, "clearch");
1637 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1638 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1639 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1643 rc = wait_event_interruptible_timeout(card->wait_q,
1644 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1645 if (rc == -ERESTARTSYS)
1647 if (channel->state != CH_STATE_STOPPED)
1649 channel->state = CH_STATE_DOWN;
1653 static int qeth_halt_channel(struct qeth_card *card,
1654 struct qeth_channel *channel)
1658 QETH_CARD_TEXT(card, 3, "haltch");
1659 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1660 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1661 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1665 rc = wait_event_interruptible_timeout(card->wait_q,
1666 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1667 if (rc == -ERESTARTSYS)
1669 if (channel->state != CH_STATE_HALTED)
1674 static int qeth_stop_channel(struct qeth_channel *channel)
1676 struct ccw_device *cdev = channel->ccwdev;
1679 rc = ccw_device_set_offline(cdev);
1681 spin_lock_irq(get_ccwdev_lock(cdev));
1682 if (channel->active_cmd)
1683 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1684 channel->active_cmd);
1686 cdev->handler = NULL;
1687 spin_unlock_irq(get_ccwdev_lock(cdev));
1692 static int qeth_start_channel(struct qeth_channel *channel)
1694 struct ccw_device *cdev = channel->ccwdev;
1697 channel->state = CH_STATE_DOWN;
1698 xchg(&channel->active_cmd, NULL);
1700 spin_lock_irq(get_ccwdev_lock(cdev));
1701 cdev->handler = qeth_irq;
1702 spin_unlock_irq(get_ccwdev_lock(cdev));
1704 rc = ccw_device_set_online(cdev);
1711 spin_lock_irq(get_ccwdev_lock(cdev));
1712 cdev->handler = NULL;
1713 spin_unlock_irq(get_ccwdev_lock(cdev));
1717 static int qeth_halt_channels(struct qeth_card *card)
1719 int rc1 = 0, rc2 = 0, rc3 = 0;
1721 QETH_CARD_TEXT(card, 3, "haltchs");
1722 rc1 = qeth_halt_channel(card, &card->read);
1723 rc2 = qeth_halt_channel(card, &card->write);
1724 rc3 = qeth_halt_channel(card, &card->data);
1732 static int qeth_clear_channels(struct qeth_card *card)
1734 int rc1 = 0, rc2 = 0, rc3 = 0;
1736 QETH_CARD_TEXT(card, 3, "clearchs");
1737 rc1 = qeth_clear_channel(card, &card->read);
1738 rc2 = qeth_clear_channel(card, &card->write);
1739 rc3 = qeth_clear_channel(card, &card->data);
1747 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1751 QETH_CARD_TEXT(card, 3, "clhacrd");
1754 rc = qeth_halt_channels(card);
1757 return qeth_clear_channels(card);
1760 static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1764 QETH_CARD_TEXT(card, 3, "qdioclr");
1765 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1766 QETH_QDIO_CLEANING)) {
1767 case QETH_QDIO_ESTABLISHED:
1769 rc = qdio_shutdown(CARD_DDEV(card),
1770 QDIO_FLAG_CLEANUP_USING_HALT);
1772 rc = qdio_shutdown(CARD_DDEV(card),
1773 QDIO_FLAG_CLEANUP_USING_CLEAR);
1775 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1776 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1778 case QETH_QDIO_CLEANING:
1783 rc = qeth_clear_halt_card(card, use_halt);
1785 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1789 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1791 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1792 struct diag26c_vnic_resp *response = NULL;
1793 struct diag26c_vnic_req *request = NULL;
1794 struct ccw_dev_id id;
1798 QETH_CARD_TEXT(card, 2, "vmlayer");
1800 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1804 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1805 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1806 if (!request || !response) {
1811 ccw_device_get_id(CARD_RDEV(card), &id);
1812 request->resp_buf_len = sizeof(*response);
1813 request->resp_version = DIAG26C_VERSION6_VM65918;
1814 request->req_format = DIAG26C_VNIC_INFO;
1816 memcpy(&request->sys_name, userid, 8);
1817 request->devno = id.devno;
1819 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1820 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1821 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1824 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1826 if (request->resp_buf_len < sizeof(*response) ||
1827 response->version != request->resp_version) {
1832 if (response->protocol == VNIC_INFO_PROT_L2)
1833 disc = QETH_DISCIPLINE_LAYER2;
1834 else if (response->protocol == VNIC_INFO_PROT_L3)
1835 disc = QETH_DISCIPLINE_LAYER3;
1841 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1845 /* Determine whether the device requires a specific layer discipline */
1846 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1848 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1851 disc = QETH_DISCIPLINE_LAYER2;
1852 else if (IS_VM_NIC(card))
1853 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1854 qeth_vm_detect_layer(card);
1857 case QETH_DISCIPLINE_LAYER2:
1858 QETH_CARD_TEXT(card, 3, "force l2");
1860 case QETH_DISCIPLINE_LAYER3:
1861 QETH_CARD_TEXT(card, 3, "force l3");
1864 QETH_CARD_TEXT(card, 3, "force no");
1870 static void qeth_set_blkt_defaults(struct qeth_card *card)
1872 QETH_CARD_TEXT(card, 2, "cfgblkt");
1874 if (card->info.use_v1_blkt) {
1875 card->info.blkt.time_total = 0;
1876 card->info.blkt.inter_packet = 0;
1877 card->info.blkt.inter_packet_jumbo = 0;
1879 card->info.blkt.time_total = 250;
1880 card->info.blkt.inter_packet = 5;
1881 card->info.blkt.inter_packet_jumbo = 15;
1885 static void qeth_idx_init(struct qeth_card *card)
1887 memset(&card->seqno, 0, sizeof(card->seqno));
1889 card->token.issuer_rm_w = 0x00010103UL;
1890 card->token.cm_filter_w = 0x00010108UL;
1891 card->token.cm_connection_w = 0x0001010aUL;
1892 card->token.ulp_filter_w = 0x0001010bUL;
1893 card->token.ulp_connection_w = 0x0001010dUL;
1895 switch (card->info.type) {
1896 case QETH_CARD_TYPE_IQD:
1897 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1899 case QETH_CARD_TYPE_OSD:
1900 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1907 static void qeth_idx_finalize_cmd(struct qeth_card *card,
1908 struct qeth_cmd_buffer *iob)
1910 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1911 QETH_SEQ_NO_LENGTH);
1912 if (iob->channel == &card->write)
1913 card->seqno.trans_hdr++;
1916 static int qeth_peer_func_level(int level)
1918 if ((level & 0xff) == 8)
1919 return (level & 0xff) + 0x400;
1920 if (((level >> 8) & 3) == 1)
1921 return (level & 0xff) + 0x200;
1925 static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1926 struct qeth_cmd_buffer *iob)
1928 qeth_idx_finalize_cmd(card, iob);
1930 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1931 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1932 card->seqno.pdu_hdr++;
1933 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1934 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1936 iob->callback = qeth_release_buffer_cb;
1939 static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1940 struct qeth_cmd_buffer *reply)
1942 /* MPC cmds are issued strictly in sequence. */
1943 return !IS_IPA(reply->data);
1946 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1948 unsigned int data_length)
1950 struct qeth_cmd_buffer *iob;
1952 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1956 memcpy(iob->data, data, data_length);
1957 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1959 iob->finalize = qeth_mpc_finalize_cmd;
1960 iob->match = qeth_mpc_match_reply;
1965 * qeth_send_control_data() - send control command to the card
1966 * @card: qeth_card structure pointer
1967 * @iob: qeth_cmd_buffer pointer
1968 * @reply_cb: callback function pointer
1969 * cb_card: pointer to the qeth_card structure
1970 * cb_reply: pointer to the qeth_reply structure
1971 * cb_cmd: pointer to the original iob for non-IPA
1972 * commands, or to the qeth_ipa_cmd structure
1973 * for the IPA commands.
1974 * @reply_param: private pointer passed to the callback
1976 * Callback function gets called one or more times, with cb_cmd
1977 * pointing to the response returned by the hardware. Callback
1978 * function must return
1979 * > 0 if more reply blocks are expected,
1980 * 0 if the last or only reply block is received, and
1982 * Callback function can get the value of the reply_param pointer from the
1983 * field 'param' of the structure qeth_reply.
1986 static int qeth_send_control_data(struct qeth_card *card,
1987 struct qeth_cmd_buffer *iob,
1988 int (*reply_cb)(struct qeth_card *cb_card,
1989 struct qeth_reply *cb_reply,
1990 unsigned long cb_cmd),
1993 struct qeth_channel *channel = iob->channel;
1994 struct qeth_reply *reply = &iob->reply;
1995 long timeout = iob->timeout;
1998 QETH_CARD_TEXT(card, 2, "sendctl");
2000 reply->callback = reply_cb;
2001 reply->param = reply_param;
2003 timeout = wait_event_interruptible_timeout(card->wait_q,
2004 qeth_trylock_channel(channel, iob),
2008 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2012 iob->finalize(card, iob);
2013 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
2015 qeth_enqueue_cmd(card, iob);
2017 /* This pairs with iob->callback, and keeps the iob alive after IO: */
2020 QETH_CARD_TEXT(card, 6, "noirqpnd");
2021 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
2022 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
2023 (addr_t) iob, 0, 0, timeout);
2024 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
2026 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
2027 CARD_DEVID(card), rc);
2028 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2029 qeth_dequeue_cmd(card, iob);
2031 qeth_unlock_channel(card, channel);
2035 timeout = wait_for_completion_interruptible_timeout(&iob->done,
2038 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2040 qeth_dequeue_cmd(card, iob);
2043 /* Wait until the callback for a late reply has completed: */
2044 spin_lock_irq(&iob->lock);
2046 /* Zap any callback that's still pending: */
2048 spin_unlock_irq(&iob->lock);
2059 struct qeth_node_desc {
2060 struct node_descriptor nd1;
2061 struct node_descriptor nd2;
2062 struct node_descriptor nd3;
2065 static void qeth_read_conf_data_cb(struct qeth_card *card,
2066 struct qeth_cmd_buffer *iob,
2067 unsigned int data_length)
2069 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
2073 QETH_CARD_TEXT(card, 2, "cfgunit");
2075 if (data_length < sizeof(*nd)) {
2080 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2081 nd->nd1.plant[1] == _ascebc['M'];
2082 tag = (u8 *)&nd->nd1.tag;
2083 card->info.chpid = tag[0];
2084 card->info.unit_addr2 = tag[1];
2086 tag = (u8 *)&nd->nd2.tag;
2087 card->info.cula = tag[1];
2089 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2090 nd->nd3.model[1] == 0xF0 &&
2091 nd->nd3.model[2] >= 0xF1 &&
2092 nd->nd3.model[2] <= 0xF4;
2095 qeth_notify_cmd(iob, rc);
2099 static int qeth_read_conf_data(struct qeth_card *card)
2101 struct qeth_channel *channel = &card->data;
2102 struct qeth_cmd_buffer *iob;
2105 /* scan for RCD command in extended SenseID data */
2106 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2107 if (!ciw || ciw->cmd == 0)
2109 if (ciw->count < sizeof(struct qeth_node_desc))
2112 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2116 iob->callback = qeth_read_conf_data_cb;
2117 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2120 return qeth_send_control_data(card, iob, NULL, NULL);
2123 static int qeth_idx_check_activate_response(struct qeth_card *card,
2124 struct qeth_channel *channel,
2125 struct qeth_cmd_buffer *iob)
2129 rc = qeth_check_idx_response(card, iob->data);
2133 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2136 /* negative reply: */
2137 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2138 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2140 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2141 case QETH_IDX_ACT_ERR_EXCL:
2142 dev_err(&channel->ccwdev->dev,
2143 "The adapter is used exclusively by another host\n");
2145 case QETH_IDX_ACT_ERR_AUTH:
2146 case QETH_IDX_ACT_ERR_AUTH_USER:
2147 dev_err(&channel->ccwdev->dev,
2148 "Setting the device online failed because of insufficient authorization\n");
2151 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2152 CCW_DEVID(channel->ccwdev));
2157 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
2158 struct qeth_cmd_buffer *iob,
2159 unsigned int data_length)
2161 struct qeth_channel *channel = iob->channel;
2165 QETH_CARD_TEXT(card, 2, "idxrdcb");
2167 rc = qeth_idx_check_activate_response(card, channel, iob);
2171 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2172 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2173 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2174 CCW_DEVID(channel->ccwdev),
2175 card->info.func_level, peer_level);
2180 memcpy(&card->token.issuer_rm_r,
2181 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2182 QETH_MPC_TOKEN_LENGTH);
2183 memcpy(&card->info.mcl_level[0],
2184 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2187 qeth_notify_cmd(iob, rc);
2191 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
2192 struct qeth_cmd_buffer *iob,
2193 unsigned int data_length)
2195 struct qeth_channel *channel = iob->channel;
2199 QETH_CARD_TEXT(card, 2, "idxwrcb");
2201 rc = qeth_idx_check_activate_response(card, channel, iob);
2205 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2206 if ((peer_level & ~0x0100) !=
2207 qeth_peer_func_level(card->info.func_level)) {
2208 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2209 CCW_DEVID(channel->ccwdev),
2210 card->info.func_level, peer_level);
2215 qeth_notify_cmd(iob, rc);
2219 static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2220 struct qeth_cmd_buffer *iob)
2222 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2223 u8 port = ((u8)card->dev->dev_port) | 0x80;
2224 struct ccw1 *ccw = __ccw_from_cmd(iob);
2226 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2228 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2229 iob->finalize = qeth_idx_finalize_cmd;
2231 port |= QETH_IDX_ACT_INVAL_FRAME;
2232 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2233 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2234 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2235 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2236 &card->info.func_level, 2);
2237 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2238 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2241 static int qeth_idx_activate_read_channel(struct qeth_card *card)
2243 struct qeth_channel *channel = &card->read;
2244 struct qeth_cmd_buffer *iob;
2247 QETH_CARD_TEXT(card, 2, "idxread");
2249 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2253 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2254 qeth_idx_setup_activate_cmd(card, iob);
2255 iob->callback = qeth_idx_activate_read_channel_cb;
2257 rc = qeth_send_control_data(card, iob, NULL, NULL);
2261 channel->state = CH_STATE_UP;
2265 static int qeth_idx_activate_write_channel(struct qeth_card *card)
2267 struct qeth_channel *channel = &card->write;
2268 struct qeth_cmd_buffer *iob;
2271 QETH_CARD_TEXT(card, 2, "idxwrite");
2273 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2277 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2278 qeth_idx_setup_activate_cmd(card, iob);
2279 iob->callback = qeth_idx_activate_write_channel_cb;
2281 rc = qeth_send_control_data(card, iob, NULL, NULL);
2285 channel->state = CH_STATE_UP;
2289 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2292 struct qeth_cmd_buffer *iob;
2294 QETH_CARD_TEXT(card, 2, "cmenblcb");
2296 iob = (struct qeth_cmd_buffer *) data;
2297 memcpy(&card->token.cm_filter_r,
2298 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2299 QETH_MPC_TOKEN_LENGTH);
2303 static int qeth_cm_enable(struct qeth_card *card)
2305 struct qeth_cmd_buffer *iob;
2307 QETH_CARD_TEXT(card, 2, "cmenable");
2309 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2313 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2314 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2315 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2316 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2318 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2321 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2324 struct qeth_cmd_buffer *iob;
2326 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2328 iob = (struct qeth_cmd_buffer *) data;
2329 memcpy(&card->token.cm_connection_r,
2330 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2331 QETH_MPC_TOKEN_LENGTH);
2335 static int qeth_cm_setup(struct qeth_card *card)
2337 struct qeth_cmd_buffer *iob;
2339 QETH_CARD_TEXT(card, 2, "cmsetup");
2341 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2345 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2346 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2347 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2348 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2349 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2350 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2351 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2354 static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2356 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2357 link_type == QETH_LINK_TYPE_HSTR) {
2358 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2365 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2367 struct net_device *dev = card->dev;
2368 unsigned int new_mtu;
2371 /* IQD needs accurate max MTU to set up its RX buffers: */
2374 /* tolerate quirky HW: */
2375 max_mtu = ETH_MAX_MTU;
2380 /* move any device with default MTU to new max MTU: */
2381 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2383 /* adjust RX buffer size to new max MTU: */
2384 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2385 if (dev->max_mtu && dev->max_mtu != max_mtu)
2386 qeth_free_qdio_queues(card);
2390 /* default MTUs for first setup: */
2391 else if (IS_LAYER2(card))
2392 new_mtu = ETH_DATA_LEN;
2394 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2397 dev->max_mtu = max_mtu;
2398 dev->mtu = min(new_mtu, max_mtu);
2403 static int qeth_get_mtu_outof_framesize(int framesize)
2405 switch (framesize) {
2419 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2422 __u16 mtu, framesize;
2424 struct qeth_cmd_buffer *iob;
2427 QETH_CARD_TEXT(card, 2, "ulpenacb");
2429 iob = (struct qeth_cmd_buffer *) data;
2430 memcpy(&card->token.ulp_filter_r,
2431 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2432 QETH_MPC_TOKEN_LENGTH);
2434 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2435 mtu = qeth_get_mtu_outof_framesize(framesize);
2437 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2439 *(u16 *)reply->param = mtu;
2441 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2442 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2444 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2445 if (!qeth_is_supported_link_type(card, link_type))
2446 return -EPROTONOSUPPORT;
2449 card->info.link_type = link_type;
2450 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2454 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2456 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
2459 static int qeth_ulp_enable(struct qeth_card *card)
2461 u8 prot_type = qeth_mpc_select_prot_type(card);
2462 struct qeth_cmd_buffer *iob;
2466 QETH_CARD_TEXT(card, 2, "ulpenabl");
2468 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2472 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2473 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2474 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2475 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2476 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2477 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2478 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2481 return qeth_update_max_mtu(card, max_mtu);
2484 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2487 struct qeth_cmd_buffer *iob;
2489 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2491 iob = (struct qeth_cmd_buffer *) data;
2492 memcpy(&card->token.ulp_connection_r,
2493 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2494 QETH_MPC_TOKEN_LENGTH);
2495 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2497 QETH_CARD_TEXT(card, 2, "olmlimit");
2498 dev_err(&card->gdev->dev, "A connection could not be "
2499 "established because of an OLM limit\n");
2505 static int qeth_ulp_setup(struct qeth_card *card)
2508 struct qeth_cmd_buffer *iob;
2510 QETH_CARD_TEXT(card, 2, "ulpsetup");
2512 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2516 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2517 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2518 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2519 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2520 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2521 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2523 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
2524 temp = (card->info.cula << 8) + card->info.unit_addr2;
2525 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2526 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2529 static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2532 struct qeth_qdio_out_buffer *newbuf;
2534 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
2538 newbuf->buffer = q->qdio_bufs[bidx];
2539 skb_queue_head_init(&newbuf->skb_list);
2540 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2541 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2542 q->bufs[bidx] = newbuf;
2546 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2551 qeth_drain_output_queue(q, true);
2552 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2556 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2558 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2564 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2567 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
2568 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
2576 qeth_free_out_buf(q->bufs[--i]);
2577 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2583 static void qeth_tx_completion_timer(struct timer_list *timer)
2585 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2587 napi_schedule(&queue->napi);
2588 QETH_TXQ_STAT_INC(queue, completion_timer);
2591 static int qeth_alloc_qdio_queues(struct qeth_card *card)
2595 QETH_CARD_TEXT(card, 2, "allcqdbf");
2597 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2598 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2601 /* inbound buffer pool */
2602 if (qeth_alloc_buffer_pool(card))
2603 goto out_buffer_pool;
2606 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2607 struct qeth_qdio_out_q *queue;
2609 queue = qeth_alloc_output_queue();
2612 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2613 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2614 card->qdio.out_qs[i] = queue;
2616 queue->queue_no = i;
2617 INIT_LIST_HEAD(&queue->pending_bufs);
2618 spin_lock_init(&queue->lock);
2619 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2621 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2622 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2623 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2625 queue->coalesce_usecs = USEC_PER_SEC;
2626 queue->max_coalesced_frames = 0;
2627 queue->rescan_usecs = 10 * USEC_PER_SEC;
2629 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
2633 if (qeth_alloc_cq(card))
2640 qeth_free_output_queue(card->qdio.out_qs[--i]);
2641 card->qdio.out_qs[i] = NULL;
2643 qeth_free_buffer_pool(card);
2645 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2649 static void qeth_free_qdio_queues(struct qeth_card *card)
2653 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2654 QETH_QDIO_UNINITIALIZED)
2658 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2659 if (card->qdio.in_q->bufs[j].rx_skb) {
2660 consume_skb(card->qdio.in_q->bufs[j].rx_skb);
2661 card->qdio.in_q->bufs[j].rx_skb = NULL;
2665 /* inbound buffer pool */
2666 qeth_free_buffer_pool(card);
2667 /* free outbound qdio_qs */
2668 for (i = 0; i < card->qdio.no_out_queues; i++) {
2669 qeth_free_output_queue(card->qdio.out_qs[i]);
2670 card->qdio.out_qs[i] = NULL;
2674 static void qeth_fill_qib_parms(struct qeth_card *card,
2675 struct qeth_qib_parms *parms)
2677 struct qeth_qdio_out_q *queue;
2680 parms->pcit_magic[0] = 'P';
2681 parms->pcit_magic[1] = 'C';
2682 parms->pcit_magic[2] = 'I';
2683 parms->pcit_magic[3] = 'T';
2684 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2685 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2686 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2687 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2689 parms->blkt_magic[0] = 'B';
2690 parms->blkt_magic[1] = 'L';
2691 parms->blkt_magic[2] = 'K';
2692 parms->blkt_magic[3] = 'T';
2693 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2694 parms->blkt_total = card->info.blkt.time_total;
2695 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2696 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
2698 /* Prio-queueing implicitly uses the default priorities: */
2699 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2702 parms->pque_magic[0] = 'P';
2703 parms->pque_magic[1] = 'Q';
2704 parms->pque_magic[2] = 'U';
2705 parms->pque_magic[3] = 'E';
2706 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2707 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2708 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2710 qeth_for_each_output_queue(card, queue, i)
2711 parms->pque_priority[i] = queue->priority;
2714 static int qeth_qdio_activate(struct qeth_card *card)
2716 QETH_CARD_TEXT(card, 3, "qdioact");
2717 return qdio_activate(CARD_DDEV(card));
2720 static int qeth_dm_act(struct qeth_card *card)
2722 struct qeth_cmd_buffer *iob;
2724 QETH_CARD_TEXT(card, 2, "dmact");
2726 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2730 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2731 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2732 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2733 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2734 return qeth_send_control_data(card, iob, NULL, NULL);
2737 static int qeth_mpc_initialize(struct qeth_card *card)
2741 QETH_CARD_TEXT(card, 2, "mpcinit");
2743 rc = qeth_issue_next_read(card);
2745 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2748 rc = qeth_cm_enable(card);
2750 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2753 rc = qeth_cm_setup(card);
2755 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2758 rc = qeth_ulp_enable(card);
2760 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2763 rc = qeth_ulp_setup(card);
2765 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2768 rc = qeth_alloc_qdio_queues(card);
2770 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2773 rc = qeth_qdio_establish(card);
2775 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2776 qeth_free_qdio_queues(card);
2779 rc = qeth_qdio_activate(card);
2781 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2784 rc = qeth_dm_act(card);
2786 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2793 static void qeth_print_status_message(struct qeth_card *card)
2795 switch (card->info.type) {
2796 case QETH_CARD_TYPE_OSD:
2797 case QETH_CARD_TYPE_OSM:
2798 case QETH_CARD_TYPE_OSX:
2799 /* VM will use a non-zero first character
2800 * to indicate a HiperSockets like reporting
2801 * of the level OSA sets the first character to zero
2803 if (!card->info.mcl_level[0]) {
2804 scnprintf(card->info.mcl_level,
2805 sizeof(card->info.mcl_level),
2807 card->info.mcl_level[2],
2808 card->info.mcl_level[3]);
2812 case QETH_CARD_TYPE_IQD:
2813 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2814 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2815 card->info.mcl_level[0]];
2816 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2817 card->info.mcl_level[1]];
2818 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2819 card->info.mcl_level[2]];
2820 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2821 card->info.mcl_level[3]];
2822 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2826 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2828 dev_info(&card->gdev->dev,
2829 "Device is a%s card%s%s%s\nwith link type %s.\n",
2830 qeth_get_cardname(card),
2831 (card->info.mcl_level[0]) ? " (level: " : "",
2832 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2833 (card->info.mcl_level[0]) ? ")" : "",
2834 qeth_get_cardname_short(card));
2837 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2839 struct qeth_buffer_pool_entry *entry;
2841 QETH_CARD_TEXT(card, 5, "inwrklst");
2843 list_for_each_entry(entry,
2844 &card->qdio.init_pool.entry_list, init_list) {
2845 qeth_put_buffer_pool_entry(card, entry);
2849 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2850 struct qeth_card *card)
2852 struct qeth_buffer_pool_entry *entry;
2855 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2858 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
2860 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2861 if (page_count(entry->elements[i]) > 1) {
2867 list_del_init(&entry->list);
2872 /* no free buffer in pool so take first one and swap pages */
2873 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2874 struct qeth_buffer_pool_entry, list);
2875 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2876 if (page_count(entry->elements[i]) > 1) {
2877 struct page *page = dev_alloc_page();
2882 __free_page(entry->elements[i]);
2883 entry->elements[i] = page;
2884 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2887 list_del_init(&entry->list);
2891 static int qeth_init_input_buffer(struct qeth_card *card,
2892 struct qeth_qdio_buffer *buf)
2894 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
2897 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2898 buf->rx_skb = netdev_alloc_skb(card->dev,
2900 sizeof(struct ipv6hdr));
2906 pool_entry = qeth_find_free_buffer_pool_entry(card);
2910 buf->pool_entry = pool_entry;
2914 * since the buffer is accessed only from the input_tasklet
2915 * there shouldn't be a need to synchronize; also, since we use
2916 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2919 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2920 buf->buffer->element[i].length = PAGE_SIZE;
2921 buf->buffer->element[i].addr = u64_to_dma64(
2922 page_to_phys(pool_entry->elements[i]));
2923 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2924 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2926 buf->buffer->element[i].eflags = 0;
2927 buf->buffer->element[i].sflags = 0;
2932 static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2933 struct qeth_qdio_out_q *queue)
2935 if (!IS_IQD(card) ||
2936 qeth_iqd_is_mcast_queue(card, queue) ||
2937 card->options.cq == QETH_CQ_ENABLED ||
2938 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2941 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2944 static int qeth_init_qdio_queues(struct qeth_card *card)
2946 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
2950 QETH_CARD_TEXT(card, 2, "initqdqs");
2953 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2954 memset(&card->rx, 0, sizeof(struct qeth_rx));
2956 qeth_initialize_working_pool_list(card);
2957 /*give only as many buffers to hardware as we have buffer pool entries*/
2958 for (i = 0; i < rx_bufs; i++) {
2959 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2964 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
2965 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 0, rx_bufs);
2967 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2972 rc = qeth_cq_init(card);
2977 /* outbound queue */
2978 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2979 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2981 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2982 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2983 queue->next_buf_to_fill = 0;
2985 queue->prev_hdr = NULL;
2986 queue->coalesced_frames = 0;
2987 queue->bulk_start = 0;
2988 queue->bulk_count = 0;
2989 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
2990 atomic_set(&queue->used_buffers, 0);
2991 atomic_set(&queue->set_pci_flags_count, 0);
2992 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
2997 static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2998 struct qeth_cmd_buffer *iob)
3000 qeth_mpc_finalize_cmd(card, iob);
3002 /* override with IPA-specific values: */
3003 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
3006 static void qeth_prepare_ipa_cmd(struct qeth_card *card,
3007 struct qeth_cmd_buffer *iob, u16 cmd_length)
3009 u8 prot_type = qeth_mpc_select_prot_type(card);
3010 u16 total_length = iob->length;
3012 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
3014 iob->finalize = qeth_ipa_finalize_cmd;
3016 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3017 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
3018 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
3019 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
3020 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
3021 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3022 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3023 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
3026 static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
3027 struct qeth_cmd_buffer *reply)
3029 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
3031 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
3034 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
3035 enum qeth_ipa_cmds cmd_code,
3036 enum qeth_prot_versions prot,
3037 unsigned int data_length)
3039 struct qeth_cmd_buffer *iob;
3040 struct qeth_ipacmd_hdr *hdr;
3042 data_length += offsetof(struct qeth_ipa_cmd, data);
3043 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3048 qeth_prepare_ipa_cmd(card, iob, data_length);
3049 iob->match = qeth_ipa_match_reply;
3051 hdr = &__ipa_cmd(iob)->hdr;
3052 hdr->command = cmd_code;
3053 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3054 /* hdr->seqno is set by qeth_send_control_data() */
3055 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
3056 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3057 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3058 hdr->param_count = 1;
3059 hdr->prot_version = prot;
3062 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3064 static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3065 struct qeth_reply *reply, unsigned long data)
3067 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3069 return (cmd->hdr.return_code) ? -EIO : 0;
3073 * qeth_send_ipa_cmd() - send an IPA command
3075 * See qeth_send_control_data() for explanation of the arguments.
3078 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3079 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3085 QETH_CARD_TEXT(card, 4, "sendipa");
3087 if (card->read_or_write_problem) {
3092 if (reply_cb == NULL)
3093 reply_cb = qeth_send_ipa_cmd_cb;
3094 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
3096 qeth_clear_ipacmd_list(card);
3097 qeth_schedule_recovery(card);
3101 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3103 static int qeth_send_startlan_cb(struct qeth_card *card,
3104 struct qeth_reply *reply, unsigned long data)
3106 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3108 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3111 return (cmd->hdr.return_code) ? -EIO : 0;
3114 static int qeth_send_startlan(struct qeth_card *card)
3116 struct qeth_cmd_buffer *iob;
3118 QETH_CARD_TEXT(card, 2, "strtlan");
3120 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
3123 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
3126 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3128 if (!cmd->hdr.return_code)
3129 cmd->hdr.return_code =
3130 cmd->data.setadapterparms.hdr.return_code;
3131 return cmd->hdr.return_code;
3134 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3135 struct qeth_reply *reply, unsigned long data)
3137 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3138 struct qeth_query_cmds_supp *query_cmd;
3140 QETH_CARD_TEXT(card, 3, "quyadpcb");
3141 if (qeth_setadpparms_inspect_rc(cmd))
3144 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3145 if (query_cmd->lan_type & 0x7f) {
3146 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3147 return -EPROTONOSUPPORT;
3149 card->info.link_type = query_cmd->lan_type;
3150 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
3153 card->options.adp.supported = query_cmd->supported_cmds;
3157 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3158 enum qeth_ipa_setadp_cmd adp_cmd,
3159 unsigned int data_length)
3161 struct qeth_ipacmd_setadpparms_hdr *hdr;
3162 struct qeth_cmd_buffer *iob;
3164 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3166 offsetof(struct qeth_ipacmd_setadpparms,
3171 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3172 hdr->cmdlength = sizeof(*hdr) + data_length;
3173 hdr->command_code = adp_cmd;
3174 hdr->used_total = 1;
3179 static int qeth_query_setadapterparms(struct qeth_card *card)
3182 struct qeth_cmd_buffer *iob;
3184 QETH_CARD_TEXT(card, 3, "queryadp");
3185 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3186 SETADP_DATA_SIZEOF(query_cmds_supp));
3189 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3193 static int qeth_query_ipassists_cb(struct qeth_card *card,
3194 struct qeth_reply *reply, unsigned long data)
3196 struct qeth_ipa_cmd *cmd;
3198 QETH_CARD_TEXT(card, 2, "qipasscb");
3200 cmd = (struct qeth_ipa_cmd *) data;
3202 switch (cmd->hdr.return_code) {
3203 case IPA_RC_SUCCESS:
3205 case IPA_RC_NOTSUPP:
3206 case IPA_RC_L2_UNSUPPORTED_CMD:
3207 QETH_CARD_TEXT(card, 2, "ipaunsup");
3208 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3209 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
3212 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3213 CARD_DEVID(card), cmd->hdr.return_code);
3217 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3218 card->options.ipa4 = cmd->hdr.assists;
3219 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3220 card->options.ipa6 = cmd->hdr.assists;
3222 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3227 static int qeth_query_ipassists(struct qeth_card *card,
3228 enum qeth_prot_versions prot)
3231 struct qeth_cmd_buffer *iob;
3233 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
3234 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
3237 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3241 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3242 struct qeth_reply *reply, unsigned long data)
3244 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3245 struct qeth_query_switch_attributes *attrs;
3246 struct qeth_switch_info *sw_info;
3248 QETH_CARD_TEXT(card, 2, "qswiatcb");
3249 if (qeth_setadpparms_inspect_rc(cmd))
3252 sw_info = (struct qeth_switch_info *)reply->param;
3253 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3254 sw_info->capabilities = attrs->capabilities;
3255 sw_info->settings = attrs->settings;
3256 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3261 int qeth_query_switch_attributes(struct qeth_card *card,
3262 struct qeth_switch_info *sw_info)
3264 struct qeth_cmd_buffer *iob;
3266 QETH_CARD_TEXT(card, 2, "qswiattr");
3267 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3269 if (!netif_carrier_ok(card->dev))
3271 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
3274 return qeth_send_ipa_cmd(card, iob,
3275 qeth_query_switch_attributes_cb, sw_info);
3278 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3279 enum qeth_diags_cmds sub_cmd,
3280 unsigned int data_length)
3282 struct qeth_ipacmd_diagass *cmd;
3283 struct qeth_cmd_buffer *iob;
3285 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3286 DIAG_HDR_LEN + data_length);
3290 cmd = &__ipa_cmd(iob)->data.diagass;
3291 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3292 cmd->subcmd = sub_cmd;
3295 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3297 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3298 struct qeth_reply *reply, unsigned long data)
3300 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3301 u16 rc = cmd->hdr.return_code;
3304 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3308 card->info.diagass_support = cmd->data.diagass.ext;
3312 static int qeth_query_setdiagass(struct qeth_card *card)
3314 struct qeth_cmd_buffer *iob;
3316 QETH_CARD_TEXT(card, 2, "qdiagass");
3317 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3320 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3323 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3325 unsigned long info = get_zeroed_page(GFP_KERNEL);
3326 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3327 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3328 struct ccw_dev_id ccwid;
3331 tid->chpid = card->info.chpid;
3332 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3333 tid->ssid = ccwid.ssid;
3334 tid->devno = ccwid.devno;
3337 level = stsi(NULL, 0, 0, 0);
3338 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3339 tid->lparnr = info222->lpar_number;
3340 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3341 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3342 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3347 static int qeth_hw_trap_cb(struct qeth_card *card,
3348 struct qeth_reply *reply, unsigned long data)
3350 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3351 u16 rc = cmd->hdr.return_code;
3354 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3360 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3362 struct qeth_cmd_buffer *iob;
3363 struct qeth_ipa_cmd *cmd;
3365 QETH_CARD_TEXT(card, 2, "diagtrap");
3366 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3369 cmd = __ipa_cmd(iob);
3370 cmd->data.diagass.type = 1;
3371 cmd->data.diagass.action = action;
3373 case QETH_DIAGS_TRAP_ARM:
3374 cmd->data.diagass.options = 0x0003;
3375 cmd->data.diagass.ext = 0x00010000 +
3376 sizeof(struct qeth_trap_id);
3377 qeth_get_trap_id(card,
3378 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3380 case QETH_DIAGS_TRAP_DISARM:
3381 cmd->data.diagass.options = 0x0001;
3383 case QETH_DIAGS_TRAP_CAPTURE:
3386 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3389 static int qeth_check_qdio_errors(struct qeth_card *card,
3390 struct qdio_buffer *buf,
3391 unsigned int qdio_error,
3392 const char *dbftext)
3395 QETH_CARD_TEXT(card, 2, dbftext);
3396 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3397 buf->element[15].sflags);
3398 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3399 buf->element[14].sflags);
3400 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3401 if ((buf->element[15].sflags) == 0x12) {
3402 QETH_CARD_STAT_INC(card, rx_fifo_errors);
3410 static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3413 struct qeth_qdio_q *queue = card->qdio.in_q;
3414 struct list_head *lh;
3419 /* only requeue at a certain threshold to avoid SIGAs */
3420 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3421 for (i = queue->next_buf_to_init;
3422 i < queue->next_buf_to_init + count; ++i) {
3423 if (qeth_init_input_buffer(card,
3424 &queue->bufs[QDIO_BUFNR(i)])) {
3431 if (newcount < count) {
3432 /* we are in memory shortage so we switch back to
3433 traditional skb allocation and drop packages */
3434 atomic_set(&card->force_alloc_skb, 3);
3437 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3442 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3444 if (i == card->qdio.in_buf_pool.buf_count) {
3445 QETH_CARD_TEXT(card, 2, "qsarbw");
3446 schedule_delayed_work(
3447 &card->buffer_reclaim_work,
3448 QETH_RECLAIM_WORK_TIME);
3453 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0,
3454 queue->next_buf_to_init,
3457 QETH_CARD_TEXT(card, 2, "qinberr");
3459 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3467 static void qeth_buffer_reclaim_work(struct work_struct *work)
3469 struct qeth_card *card = container_of(to_delayed_work(work),
3471 buffer_reclaim_work);
3474 napi_schedule(&card->napi);
3475 /* kick-start the NAPI softirq: */
3479 static void qeth_handle_send_error(struct qeth_card *card,
3480 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3482 int sbalf15 = buffer->buffer->element[15].sflags;
3484 QETH_CARD_TEXT(card, 6, "hdsnderr");
3485 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3490 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3493 QETH_CARD_TEXT(card, 1, "lnkfail");
3494 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3495 (u16)qdio_err, (u8)sbalf15);
3499 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3500 * @queue: queue to check for packing buffer
3502 * Returns number of buffers that were prepared for flush.
3504 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3506 struct qeth_qdio_out_buffer *buffer;
3508 buffer = queue->bufs[queue->next_buf_to_fill];
3509 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3510 (buffer->next_element_to_fill > 0)) {
3511 /* it's a packing buffer */
3512 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3513 queue->next_buf_to_fill =
3514 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3521 * Switched to packing state if the number of used buffers on a queue
3522 * reaches a certain limit.
3524 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3526 if (!queue->do_pack) {
3527 if (atomic_read(&queue->used_buffers)
3528 >= QETH_HIGH_WATERMARK_PACK){
3529 /* switch non-PACKING -> PACKING */
3530 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3531 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3538 * Switches from packing to non-packing mode. If there is a packing
3539 * buffer on the queue this buffer will be prepared to be flushed.
3540 * In that case 1 is returned to inform the caller. If no buffer
3541 * has to be flushed, zero is returned.
3543 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3545 if (queue->do_pack) {
3546 if (atomic_read(&queue->used_buffers)
3547 <= QETH_LOW_WATERMARK_PACK) {
3548 /* switch PACKING -> non-PACKING */
3549 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3550 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3552 return qeth_prep_flush_pack_buffer(queue);
3558 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3561 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
3562 struct qeth_card *card = queue->card;
3563 unsigned int frames, usecs;
3564 struct qaob *aob = NULL;
3568 for (i = index; i < index + count; ++i) {
3569 unsigned int bidx = QDIO_BUFNR(i);
3570 struct sk_buff *skb;
3572 buf = queue->bufs[bidx];
3573 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3574 SBAL_EFLAGS_LAST_ENTRY;
3575 queue->coalesced_frames += buf->frames;
3578 skb_queue_walk(&buf->skb_list, skb)
3579 skb_tx_timestamp(skb);
3584 if (card->options.cq == QETH_CQ_ENABLED &&
3585 !qeth_iqd_is_mcast_queue(card, queue) &&
3588 buf->aob = kmem_cache_zalloc(qeth_qaob_cache,
3591 struct qeth_qaob_priv1 *priv;
3594 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3595 priv->state = QETH_QAOB_ISSUED;
3596 priv->queue_no = queue->queue_no;
3600 if (!queue->do_pack) {
3601 if ((atomic_read(&queue->used_buffers) >=
3602 (QETH_HIGH_WATERMARK_PACK -
3603 QETH_WATERMARK_PACK_FUZZ)) &&
3604 !atomic_read(&queue->set_pci_flags_count)) {
3605 /* it's likely that we'll go to packing
3607 atomic_inc(&queue->set_pci_flags_count);
3608 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3611 if (!atomic_read(&queue->set_pci_flags_count)) {
3613 * there's no outstanding PCI any more, so we
3614 * have to request a PCI to be sure the PCI
3615 * will wake at some time in the future then we
3616 * can flush packed buffers that might still be
3617 * hanging around, which can happen if no
3618 * further send was requested by the stack
3620 atomic_inc(&queue->set_pci_flags_count);
3621 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3626 QETH_TXQ_STAT_INC(queue, doorbell);
3627 rc = qdio_add_bufs_to_output_queue(CARD_DDEV(card), queue->queue_no,
3633 /* ignore temporary SIGA errors without busy condition */
3635 /* Fake the TX completion interrupt: */
3636 frames = READ_ONCE(queue->max_coalesced_frames);
3637 usecs = READ_ONCE(queue->coalesce_usecs);
3639 if (frames && queue->coalesced_frames >= frames) {
3640 napi_schedule(&queue->napi);
3641 queue->coalesced_frames = 0;
3642 QETH_TXQ_STAT_INC(queue, coal_frames);
3643 } else if (qeth_use_tx_irqs(card) &&
3644 atomic_read(&queue->used_buffers) >= 32) {
3645 /* Old behaviour carried over from the qdio layer: */
3646 napi_schedule(&queue->napi);
3647 QETH_TXQ_STAT_INC(queue, coal_frames);
3649 qeth_tx_arm_timer(queue, usecs);
3654 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3655 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3656 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3657 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3658 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3660 /* this must not happen under normal circumstances. if it
3661 * happens something is really wrong -> recover */
3662 qeth_schedule_recovery(queue->card);
3666 static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3668 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
3670 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
3671 queue->prev_hdr = NULL;
3672 queue->bulk_count = 0;
3675 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3678 * check if we have to switch to non-packing mode or if
3679 * we have to get a pci flag out on the queue
3681 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3682 !atomic_read(&queue->set_pci_flags_count)) {
3683 unsigned int index, flush_cnt;
3685 spin_lock(&queue->lock);
3687 index = queue->next_buf_to_fill;
3689 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3690 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3691 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3694 qeth_flush_buffers(queue, index, flush_cnt);
3695 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3698 spin_unlock(&queue->lock);
3702 static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
3704 struct qeth_card *card = (struct qeth_card *)card_ptr;
3706 napi_schedule_irqoff(&card->napi);
3709 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3713 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3717 if (card->options.cq == cq) {
3722 qeth_free_qdio_queues(card);
3723 card->options.cq = cq;
3730 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3732 static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3734 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3735 unsigned int queue_no = priv->queue_no;
3737 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3739 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3740 queue_no < card->qdio.no_out_queues)
3741 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3744 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3745 unsigned int queue, int first_element,
3748 struct qeth_qdio_q *cq = card->qdio.c_q;
3752 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3753 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3754 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3757 netif_tx_stop_all_queues(card->dev);
3758 qeth_schedule_recovery(card);
3762 for (i = first_element; i < first_element + count; ++i) {
3763 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3766 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3767 buffer->element[e].addr) {
3768 dma64_t phys_aob_addr = buffer->element[e].addr;
3770 qeth_qdio_handle_aob(card, dma64_to_virt(phys_aob_addr));
3773 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3775 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), queue,
3776 cq->next_buf_to_init, count);
3778 dev_warn(&card->gdev->dev,
3779 "QDIO reported an error, rc=%i\n", rc);
3780 QETH_CARD_TEXT(card, 2, "qcqherr");
3783 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
3786 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3787 unsigned int qdio_err, int queue,
3788 int first_elem, int count,
3789 unsigned long card_ptr)
3791 struct qeth_card *card = (struct qeth_card *)card_ptr;
3793 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3794 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3797 qeth_schedule_recovery(card);
3800 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3801 unsigned int qdio_error, int __queue,
3802 int first_element, int count,
3803 unsigned long card_ptr)
3805 struct qeth_card *card = (struct qeth_card *) card_ptr;
3807 QETH_CARD_TEXT(card, 2, "achkcond");
3808 netif_tx_stop_all_queues(card->dev);
3809 qeth_schedule_recovery(card);
3813 * Note: Function assumes that we have 4 outbound queues.
3815 static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3817 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3820 switch (card->qdio.do_prio_queueing) {
3821 case QETH_PRIO_Q_ING_TOS:
3822 case QETH_PRIO_Q_ING_PREC:
3823 switch (vlan_get_protocol(skb)) {
3824 case htons(ETH_P_IP):
3825 tos = ipv4_get_dsfield(ip_hdr(skb));
3827 case htons(ETH_P_IPV6):
3828 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3831 return card->qdio.default_out_queue;
3833 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3834 return ~tos >> 6 & 3;
3835 if (tos & IPTOS_MINCOST)
3837 if (tos & IPTOS_RELIABILITY)
3839 if (tos & IPTOS_THROUGHPUT)
3841 if (tos & IPTOS_LOWDELAY)
3844 case QETH_PRIO_Q_ING_SKB:
3845 if (skb->priority > 5)
3847 return ~skb->priority >> 1 & 3;
3848 case QETH_PRIO_Q_ING_VLAN:
3849 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3850 return ~ntohs(veth->h_vlan_TCI) >>
3851 (VLAN_PRIO_SHIFT + 1) & 3;
3853 case QETH_PRIO_Q_ING_FIXED:
3854 return card->qdio.default_out_queue;
3858 return card->qdio.default_out_queue;
3862 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3865 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3866 * fragmented part of the SKB. Returns zero for linear SKB.
3868 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3870 int cnt, elements = 0;
3872 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3873 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3875 elements += qeth_get_elements_for_range(
3876 (addr_t)skb_frag_address(frag),
3877 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3883 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3884 * to transmit an skb.
3885 * @skb: the skb to operate on.
3886 * @data_offset: skip this part of the skb's linear data
3888 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3889 * skb's data (both its linear part and paged fragments).
3891 static unsigned int qeth_count_elements(struct sk_buff *skb,
3892 unsigned int data_offset)
3894 unsigned int elements = qeth_get_elements_for_frags(skb);
3895 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3896 addr_t start = (addr_t)skb->data + data_offset;
3899 elements += qeth_get_elements_for_range(start, end);
3903 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3907 * qeth_add_hw_header() - add a HW header to an skb.
3908 * @queue: TX queue that the skb will be placed on.
3909 * @skb: skb that the HW header should be added to.
3910 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3911 * it contains a valid pointer to a qeth_hdr.
3912 * @hdr_len: length of the HW header.
3913 * @proto_len: length of protocol headers that need to be in same page as the
3915 * @elements: returns the required number of buffer elements for this skb.
3917 * Returns the pushed length. If the header can't be pushed on
3918 * (eg. because it would cross a page boundary), it is allocated from
3919 * the cache instead and 0 is returned.
3920 * The number of needed buffer elements is returned in @elements.
3921 * Error to create the hdr is indicated by returning with < 0.
3923 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3924 struct sk_buff *skb, struct qeth_hdr **hdr,
3925 unsigned int hdr_len, unsigned int proto_len,
3926 unsigned int *elements)
3928 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
3929 const unsigned int contiguous = proto_len ? proto_len : 1;
3930 const unsigned int max_elements = queue->max_elements;
3931 unsigned int __elements;
3937 start = (addr_t)skb->data - hdr_len;
3938 end = (addr_t)skb->data;
3940 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3941 /* Push HW header into same page as first protocol header. */
3943 /* ... but TSO always needs a separate element for headers: */
3944 if (skb_is_gso(skb))
3945 __elements = 1 + qeth_count_elements(skb, proto_len);
3947 __elements = qeth_count_elements(skb, 0);
3948 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3949 /* Push HW header into preceding page, flush with skb->data. */
3951 __elements = 1 + qeth_count_elements(skb, 0);
3953 /* Use header cache, copy protocol headers up. */
3955 __elements = 1 + qeth_count_elements(skb, proto_len);
3958 /* Compress skb to fit into one IO buffer: */
3959 if (__elements > max_elements) {
3960 if (!skb_is_nonlinear(skb)) {
3961 /* Drop it, no easy way of shrinking it further. */
3962 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3963 max_elements, __elements, skb->len);
3967 rc = skb_linearize(skb);
3969 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3973 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3974 /* Linearization changed the layout, re-evaluate: */
3978 *elements = __elements;
3979 /* Add the header: */
3981 *hdr = skb_push(skb, hdr_len);
3985 /* Fall back to cache element with known-good alignment: */
3986 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3988 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
3991 /* Copy protocol headers behind HW header: */
3992 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3996 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
3997 struct sk_buff *curr_skb,
3998 struct qeth_hdr *curr_hdr)
4000 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
4001 struct qeth_hdr *prev_hdr = queue->prev_hdr;
4006 /* All packets must have the same target: */
4007 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
4008 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
4010 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
4011 eth_hdr(curr_skb)->h_dest) &&
4012 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
4015 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
4016 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
4020 * qeth_fill_buffer() - map skb into an output buffer
4021 * @buf: buffer to transport the skb
4022 * @skb: skb to map into the buffer
4023 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4024 * from qeth_core_header_cache.
4025 * @offset: when mapping the skb, start at skb->data + offset
4026 * @hd_len: if > 0, build a dedicated header element of this size
4028 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
4029 struct sk_buff *skb, struct qeth_hdr *hdr,
4030 unsigned int offset, unsigned int hd_len)
4032 struct qdio_buffer *buffer = buf->buffer;
4033 int element = buf->next_element_to_fill;
4034 int length = skb_headlen(skb) - offset;
4035 char *data = skb->data + offset;
4036 unsigned int elem_length, cnt;
4037 bool is_first_elem = true;
4039 __skb_queue_tail(&buf->skb_list, skb);
4041 /* build dedicated element for HW Header */
4043 is_first_elem = false;
4045 buffer->element[element].addr = virt_to_dma64(hdr);
4046 buffer->element[element].length = hd_len;
4047 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4049 /* HW header is allocated from cache: */
4050 if ((void *)hdr != skb->data)
4051 __set_bit(element, buf->from_kmem_cache);
4052 /* HW header was pushed and is contiguous with linear part: */
4053 else if (length > 0 && !PAGE_ALIGNED(data) &&
4054 (data == (char *)hdr + hd_len))
4055 buffer->element[element].eflags |=
4056 SBAL_EFLAGS_CONTIGUOUS;
4061 /* map linear part into buffer element(s) */
4062 while (length > 0) {
4063 elem_length = min_t(unsigned int, length,
4064 PAGE_SIZE - offset_in_page(data));
4066 buffer->element[element].addr = virt_to_dma64(data);
4067 buffer->element[element].length = elem_length;
4068 length -= elem_length;
4069 if (is_first_elem) {
4070 is_first_elem = false;
4071 if (length || skb_is_nonlinear(skb))
4072 /* skb needs additional elements */
4073 buffer->element[element].eflags =
4074 SBAL_EFLAGS_FIRST_FRAG;
4076 buffer->element[element].eflags = 0;
4078 buffer->element[element].eflags =
4079 SBAL_EFLAGS_MIDDLE_FRAG;
4082 data += elem_length;
4086 /* map page frags into buffer element(s) */
4087 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4088 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4090 data = skb_frag_address(frag);
4091 length = skb_frag_size(frag);
4092 while (length > 0) {
4093 elem_length = min_t(unsigned int, length,
4094 PAGE_SIZE - offset_in_page(data));
4096 buffer->element[element].addr = virt_to_dma64(data);
4097 buffer->element[element].length = elem_length;
4098 buffer->element[element].eflags =
4099 SBAL_EFLAGS_MIDDLE_FRAG;
4101 length -= elem_length;
4102 data += elem_length;
4107 if (buffer->element[element - 1].eflags)
4108 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4109 buf->next_element_to_fill = element;
4113 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4114 struct sk_buff *skb, unsigned int elements,
4115 struct qeth_hdr *hdr, unsigned int offset,
4116 unsigned int hd_len)
4118 unsigned int bytes = qdisc_pkt_len(skb);
4119 struct qeth_qdio_out_buffer *buffer;
4120 unsigned int next_element;
4121 struct netdev_queue *txq;
4122 bool stopped = false;
4125 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
4126 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4128 /* Just a sanity check, the wake/stop logic should ensure that we always
4129 * get a free buffer.
4131 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4134 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4137 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4138 if (buffer->next_element_to_fill > 0) {
4139 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4140 queue->bulk_count++;
4143 if (queue->bulk_count >= queue->bulk_max)
4147 qeth_flush_queue(queue);
4149 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4150 queue->bulk_count)];
4152 /* Sanity-check again: */
4153 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4157 if (buffer->next_element_to_fill == 0 &&
4158 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4159 /* If a TX completion happens right _here_ and misses to wake
4160 * the txq, then our re-check below will catch the race.
4162 QETH_TXQ_STAT_INC(queue, stopped);
4163 netif_tx_stop_queue(txq);
4167 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4168 buffer->bytes += bytes;
4169 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4170 queue->prev_hdr = hdr;
4172 flush = __netdev_tx_sent_queue(txq, bytes,
4173 !stopped && netdev_xmit_more());
4175 if (flush || next_element >= queue->max_elements) {
4176 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4177 queue->bulk_count++;
4179 if (queue->bulk_count >= queue->bulk_max)
4183 qeth_flush_queue(queue);
4186 if (stopped && !qeth_out_queue_is_full(queue))
4187 netif_tx_start_queue(txq);
4191 static int qeth_do_send_packet(struct qeth_card *card,
4192 struct qeth_qdio_out_q *queue,
4193 struct sk_buff *skb, struct qeth_hdr *hdr,
4194 unsigned int offset, unsigned int hd_len,
4195 unsigned int elements_needed)
4197 unsigned int start_index = queue->next_buf_to_fill;
4198 struct qeth_qdio_out_buffer *buffer;
4199 unsigned int next_element;
4200 struct netdev_queue *txq;
4201 bool stopped = false;
4202 int flush_count = 0;
4206 buffer = queue->bufs[queue->next_buf_to_fill];
4208 /* Just a sanity check, the wake/stop logic should ensure that we always
4209 * get a free buffer.
4211 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4214 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4216 /* check if we need to switch packing state of this queue */
4217 qeth_switch_to_packing_if_needed(queue);
4218 if (queue->do_pack) {
4220 /* does packet fit in current buffer? */
4221 if (buffer->next_element_to_fill + elements_needed >
4222 queue->max_elements) {
4223 /* ... no -> set state PRIMED */
4224 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4226 queue->next_buf_to_fill =
4227 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4228 buffer = queue->bufs[queue->next_buf_to_fill];
4230 /* We stepped forward, so sanity-check again: */
4231 if (atomic_read(&buffer->state) !=
4232 QETH_QDIO_BUF_EMPTY) {
4233 qeth_flush_buffers(queue, start_index,
4241 if (buffer->next_element_to_fill == 0 &&
4242 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4243 /* If a TX completion happens right _here_ and misses to wake
4244 * the txq, then our re-check below will catch the race.
4246 QETH_TXQ_STAT_INC(queue, stopped);
4247 netif_tx_stop_queue(txq);
4251 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4252 buffer->bytes += qdisc_pkt_len(skb);
4253 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4256 QETH_TXQ_STAT_INC(queue, skbs_pack);
4257 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4259 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4260 queue->next_buf_to_fill =
4261 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4265 qeth_flush_buffers(queue, start_index, flush_count);
4269 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4271 if (stopped && !qeth_out_queue_is_full(queue))
4272 netif_tx_start_queue(txq);
4276 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4277 unsigned int payload_len, struct sk_buff *skb,
4278 unsigned int proto_len)
4280 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4282 ext->hdr_tot_len = sizeof(*ext);
4283 ext->imb_hdr_no = 1;
4285 ext->hdr_version = 1;
4287 ext->payload_len = payload_len;
4288 ext->mss = skb_shinfo(skb)->gso_size;
4289 ext->dg_hdr_len = proto_len;
4292 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4293 struct qeth_qdio_out_q *queue, __be16 proto,
4294 void (*fill_header)(struct qeth_qdio_out_q *queue,
4295 struct qeth_hdr *hdr, struct sk_buff *skb,
4296 __be16 proto, unsigned int data_len))
4298 unsigned int proto_len, hw_hdr_len;
4299 unsigned int frame_len = skb->len;
4300 bool is_tso = skb_is_gso(skb);
4301 unsigned int data_offset = 0;
4302 struct qeth_hdr *hdr = NULL;
4303 unsigned int hd_len = 0;
4304 unsigned int elements;
4308 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4309 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4311 hw_hdr_len = sizeof(struct qeth_hdr);
4312 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4315 rc = skb_cow_head(skb, hw_hdr_len);
4319 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4323 if (is_tso || !push_len) {
4324 /* HW header needs its own buffer element. */
4325 hd_len = hw_hdr_len + proto_len;
4326 data_offset = push_len + proto_len;
4328 memset(hdr, 0, hw_hdr_len);
4329 fill_header(queue, hdr, skb, proto, frame_len);
4331 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4332 frame_len - proto_len, skb, proto_len);
4335 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4338 /* TODO: drop skb_orphan() once TX completion is fast enough */
4340 spin_lock(&queue->lock);
4341 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4343 spin_unlock(&queue->lock);
4346 if (rc && !push_len)
4347 kmem_cache_free(qeth_core_header_cache, hdr);
4351 EXPORT_SYMBOL_GPL(qeth_xmit);
4353 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4354 struct qeth_reply *reply, unsigned long data)
4356 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4357 struct qeth_ipacmd_setadpparms *setparms;
4359 QETH_CARD_TEXT(card, 4, "prmadpcb");
4361 setparms = &(cmd->data.setadapterparms);
4362 if (qeth_setadpparms_inspect_rc(cmd)) {
4363 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4364 setparms->data.mode = SET_PROMISC_MODE_OFF;
4366 card->info.promisc_mode = setparms->data.mode;
4367 return (cmd->hdr.return_code) ? -EIO : 0;
4370 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4372 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4373 SET_PROMISC_MODE_OFF;
4374 struct qeth_cmd_buffer *iob;
4375 struct qeth_ipa_cmd *cmd;
4377 QETH_CARD_TEXT(card, 4, "setprom");
4378 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4380 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4381 SETADP_DATA_SIZEOF(mode));
4384 cmd = __ipa_cmd(iob);
4385 cmd->data.setadapterparms.data.mode = mode;
4386 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4388 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4390 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4391 struct qeth_reply *reply, unsigned long data)
4393 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4394 struct qeth_ipacmd_setadpparms *adp_cmd;
4396 QETH_CARD_TEXT(card, 4, "chgmaccb");
4397 if (qeth_setadpparms_inspect_rc(cmd))
4400 adp_cmd = &cmd->data.setadapterparms;
4401 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4402 return -EADDRNOTAVAIL;
4404 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4405 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4406 return -EADDRNOTAVAIL;
4408 eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr);
4412 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4415 struct qeth_cmd_buffer *iob;
4416 struct qeth_ipa_cmd *cmd;
4418 QETH_CARD_TEXT(card, 4, "chgmac");
4420 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4421 SETADP_DATA_SIZEOF(change_addr));
4424 cmd = __ipa_cmd(iob);
4425 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4426 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4427 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4428 card->dev->dev_addr);
4429 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4433 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4435 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4436 struct qeth_reply *reply, unsigned long data)
4438 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4439 struct qeth_set_access_ctrl *access_ctrl_req;
4441 QETH_CARD_TEXT(card, 4, "setaccb");
4443 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4444 QETH_CARD_TEXT_(card, 2, "rc=%d",
4445 cmd->data.setadapterparms.hdr.return_code);
4446 if (cmd->data.setadapterparms.hdr.return_code !=
4447 SET_ACCESS_CTRL_RC_SUCCESS)
4448 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4449 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4450 cmd->data.setadapterparms.hdr.return_code);
4451 switch (qeth_setadpparms_inspect_rc(cmd)) {
4452 case SET_ACCESS_CTRL_RC_SUCCESS:
4453 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
4454 dev_info(&card->gdev->dev,
4455 "QDIO data connection isolation is deactivated\n");
4457 dev_info(&card->gdev->dev,
4458 "QDIO data connection isolation is activated\n");
4460 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4461 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4464 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4465 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4468 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4469 dev_err(&card->gdev->dev, "Adapter does not "
4470 "support QDIO data connection isolation\n");
4472 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4473 dev_err(&card->gdev->dev,
4474 "Adapter is dedicated. "
4475 "QDIO data connection isolation not supported\n");
4477 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4478 dev_err(&card->gdev->dev,
4479 "TSO does not permit QDIO data connection isolation\n");
4481 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4482 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4483 "support reflective relay mode\n");
4485 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4486 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4487 "enabled at the adjacent switch port");
4489 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4490 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4491 "at the adjacent switch failed\n");
4492 /* benign error while disabling ISOLATION_MODE_FWD */
4499 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4500 enum qeth_ipa_isolation_modes mode)
4503 struct qeth_cmd_buffer *iob;
4504 struct qeth_ipa_cmd *cmd;
4505 struct qeth_set_access_ctrl *access_ctrl_req;
4507 QETH_CARD_TEXT(card, 4, "setacctl");
4509 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4510 dev_err(&card->gdev->dev,
4511 "Adapter does not support QDIO data connection isolation\n");
4515 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4516 SETADP_DATA_SIZEOF(set_access_ctrl));
4519 cmd = __ipa_cmd(iob);
4520 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4521 access_ctrl_req->subcmd_code = mode;
4523 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4526 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4527 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4528 rc, CARD_DEVID(card));
4534 void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4536 struct qeth_card *card;
4538 card = dev->ml_priv;
4539 QETH_CARD_TEXT(card, 4, "txtimeo");
4540 qeth_schedule_recovery(card);
4542 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4544 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4546 struct qeth_card *card = dev->ml_priv;
4550 case MII_BMCR: /* Basic mode control register */
4552 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4553 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4554 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4555 rc |= BMCR_SPEED100;
4557 case MII_BMSR: /* Basic mode status register */
4558 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4559 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4562 case MII_PHYSID1: /* PHYS ID 1 */
4563 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4565 rc = (rc >> 5) & 0xFFFF;
4567 case MII_PHYSID2: /* PHYS ID 2 */
4568 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4570 case MII_ADVERTISE: /* Advertisement control reg */
4573 case MII_LPA: /* Link partner ability reg */
4574 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4575 LPA_100BASE4 | LPA_LPACK;
4577 case MII_EXPANSION: /* Expansion register */
4579 case MII_DCOUNTER: /* disconnect counter */
4581 case MII_FCSCOUNTER: /* false carrier counter */
4583 case MII_NWAYTEST: /* N-way auto-neg test register */
4585 case MII_RERRCOUNTER: /* rx error counter */
4586 rc = card->stats.rx_length_errors +
4587 card->stats.rx_frame_errors +
4588 card->stats.rx_fifo_errors;
4590 case MII_SREVISION: /* silicon revision */
4592 case MII_RESV1: /* reserved 1 */
4594 case MII_LBRERROR: /* loopback, rx, bypass error */
4596 case MII_PHYADDR: /* physical address */
4598 case MII_RESV2: /* reserved 2 */
4600 case MII_TPISTATUS: /* TPI status for 10mbps */
4602 case MII_NCONFIG: /* network interface config */
4610 static int qeth_snmp_command_cb(struct qeth_card *card,
4611 struct qeth_reply *reply, unsigned long data)
4613 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4614 struct qeth_arp_query_info *qinfo = reply->param;
4615 struct qeth_ipacmd_setadpparms *adp_cmd;
4616 unsigned int data_len;
4619 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4621 if (cmd->hdr.return_code) {
4622 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4625 if (cmd->data.setadapterparms.hdr.return_code) {
4626 cmd->hdr.return_code =
4627 cmd->data.setadapterparms.hdr.return_code;
4628 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4632 adp_cmd = &cmd->data.setadapterparms;
4633 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4634 if (adp_cmd->hdr.seq_no == 1) {
4635 snmp_data = &adp_cmd->data.snmp;
4637 snmp_data = &adp_cmd->data.snmp.request;
4638 data_len -= offsetof(struct qeth_snmp_cmd, request);
4641 /* check if there is enough room in userspace */
4642 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4643 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4646 QETH_CARD_TEXT_(card, 4, "snore%i",
4647 cmd->data.setadapterparms.hdr.used_total);
4648 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4649 cmd->data.setadapterparms.hdr.seq_no);
4650 /*copy entries to user buffer*/
4651 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4652 qinfo->udata_offset += data_len;
4654 if (cmd->data.setadapterparms.hdr.seq_no <
4655 cmd->data.setadapterparms.hdr.used_total)
4660 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4662 struct qeth_snmp_ureq __user *ureq;
4663 struct qeth_cmd_buffer *iob;
4664 unsigned int req_len;
4665 struct qeth_arp_query_info qinfo = {0, };
4668 QETH_CARD_TEXT(card, 3, "snmpcmd");
4670 if (IS_VM_NIC(card))
4673 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4677 ureq = (struct qeth_snmp_ureq __user *) udata;
4678 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4679 get_user(req_len, &ureq->hdr.req_len))
4682 /* Sanitize user input, to avoid overflows in iob size calculation: */
4683 if (req_len > QETH_BUFSIZE)
4686 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4690 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4691 &ureq->cmd, req_len)) {
4696 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4701 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4703 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4705 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4706 CARD_DEVID(card), rc);
4708 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4716 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4717 struct qeth_reply *reply,
4720 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4721 struct qeth_qoat_priv *priv = reply->param;
4724 QETH_CARD_TEXT(card, 3, "qoatcb");
4725 if (qeth_setadpparms_inspect_rc(cmd))
4728 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4730 if (resdatalen > (priv->buffer_len - priv->response_len))
4733 memcpy(priv->buffer + priv->response_len,
4734 &cmd->data.setadapterparms.hdr, resdatalen);
4735 priv->response_len += resdatalen;
4737 if (cmd->data.setadapterparms.hdr.seq_no <
4738 cmd->data.setadapterparms.hdr.used_total)
4743 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4746 struct qeth_cmd_buffer *iob;
4747 struct qeth_ipa_cmd *cmd;
4748 struct qeth_query_oat *oat_req;
4749 struct qeth_query_oat_data oat_data;
4750 struct qeth_qoat_priv priv;
4753 QETH_CARD_TEXT(card, 3, "qoatcmd");
4755 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4758 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4761 priv.buffer_len = oat_data.buffer_len;
4762 priv.response_len = 0;
4763 priv.buffer = vzalloc(oat_data.buffer_len);
4767 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4768 SETADP_DATA_SIZEOF(query_oat));
4773 cmd = __ipa_cmd(iob);
4774 oat_req = &cmd->data.setadapterparms.data.query_oat;
4775 oat_req->subcmd_code = oat_data.command;
4777 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
4779 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4780 u64_to_user_ptr(oat_data.ptr);
4781 oat_data.response_len = priv.response_len;
4783 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4784 copy_to_user(udata, &oat_data, sizeof(oat_data)))
4793 static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4794 struct qeth_reply *reply_priv,
4797 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4798 struct qeth_link_info *link_info = reply_priv->param;
4799 struct qeth_query_oat_physical_if *phys_if;
4800 struct qeth_query_oat_reply *reply;
4802 QETH_CARD_TEXT(card, 2, "qoatincb");
4803 if (qeth_setadpparms_inspect_rc(cmd))
4806 /* Multi-part reply is unexpected, don't bother: */
4807 if (cmd->data.setadapterparms.hdr.used_total > 1)
4810 /* Expect the reply to start with phys_if data: */
4811 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4812 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4813 reply->length < sizeof(*reply))
4816 phys_if = &reply->phys_if;
4818 switch (phys_if->speed_duplex) {
4819 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4820 link_info->speed = SPEED_10;
4821 link_info->duplex = DUPLEX_HALF;
4823 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4824 link_info->speed = SPEED_10;
4825 link_info->duplex = DUPLEX_FULL;
4827 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4828 link_info->speed = SPEED_100;
4829 link_info->duplex = DUPLEX_HALF;
4831 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4832 link_info->speed = SPEED_100;
4833 link_info->duplex = DUPLEX_FULL;
4835 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4836 link_info->speed = SPEED_1000;
4837 link_info->duplex = DUPLEX_HALF;
4839 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4840 link_info->speed = SPEED_1000;
4841 link_info->duplex = DUPLEX_FULL;
4843 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4844 link_info->speed = SPEED_10000;
4845 link_info->duplex = DUPLEX_FULL;
4847 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4848 link_info->speed = SPEED_25000;
4849 link_info->duplex = DUPLEX_FULL;
4851 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4853 link_info->speed = SPEED_UNKNOWN;
4854 link_info->duplex = DUPLEX_UNKNOWN;
4858 switch (phys_if->media_type) {
4859 case QETH_QOAT_PHYS_MEDIA_COPPER:
4860 link_info->port = PORT_TP;
4861 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4863 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
4864 link_info->port = PORT_FIBRE;
4865 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4867 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4868 link_info->port = PORT_FIBRE;
4869 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
4872 link_info->port = PORT_OTHER;
4873 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4880 static void qeth_init_link_info(struct qeth_card *card)
4882 qeth_default_link_info(card);
4884 /* Get more accurate data via QUERY OAT: */
4885 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4886 struct qeth_link_info link_info;
4887 struct qeth_cmd_buffer *iob;
4889 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4890 SETADP_DATA_SIZEOF(query_oat));
4892 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
4893 struct qeth_query_oat *oat_req;
4895 oat_req = &cmd->data.setadapterparms.data.query_oat;
4896 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
4898 if (!qeth_send_ipa_cmd(card, iob,
4899 qeth_init_link_info_oat_cb,
4901 if (link_info.speed != SPEED_UNKNOWN)
4902 card->info.link_info.speed = link_info.speed;
4903 if (link_info.duplex != DUPLEX_UNKNOWN)
4904 card->info.link_info.duplex = link_info.duplex;
4905 if (link_info.port != PORT_OTHER)
4906 card->info.link_info.port = link_info.port;
4907 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
4908 card->info.link_info.link_mode = link_info.link_mode;
4915 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4916 * @card: pointer to a qeth_card
4919 * 0, if a MAC address has been set for the card's netdevice
4920 * a return code, for various error conditions
4922 int qeth_vm_request_mac(struct qeth_card *card)
4924 struct diag26c_mac_resp *response;
4925 struct diag26c_mac_req *request;
4928 QETH_CARD_TEXT(card, 2, "vmreqmac");
4930 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4931 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4932 if (!request || !response) {
4937 request->resp_buf_len = sizeof(*response);
4938 request->resp_version = DIAG26C_VERSION2;
4939 request->op_code = DIAG26C_GET_MAC;
4940 request->devno = card->info.ddev_devno;
4942 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4943 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4944 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4947 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4949 if (request->resp_buf_len < sizeof(*response) ||
4950 response->version != request->resp_version) {
4952 QETH_CARD_TEXT(card, 2, "badresp");
4953 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4954 sizeof(request->resp_buf_len));
4955 } else if (!is_valid_ether_addr(response->mac)) {
4957 QETH_CARD_TEXT(card, 2, "badmac");
4958 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
4960 eth_hw_addr_set(card->dev, response->mac);
4968 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4970 static void qeth_determine_capabilities(struct qeth_card *card)
4972 struct qeth_channel *channel = &card->data;
4973 struct ccw_device *ddev = channel->ccwdev;
4975 int ddev_offline = 0;
4977 QETH_CARD_TEXT(card, 2, "detcapab");
4978 if (!ddev->online) {
4980 rc = qeth_start_channel(channel);
4982 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4987 rc = qeth_read_conf_data(card);
4989 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4990 CARD_DEVID(card), rc);
4991 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4995 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4997 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4999 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5000 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5001 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5002 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5003 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
5004 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5005 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5006 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5007 dev_info(&card->gdev->dev,
5008 "Completion Queueing supported\n");
5010 card->options.cq = QETH_CQ_NOTAVAILABLE;
5014 if (ddev_offline == 1)
5015 qeth_stop_channel(channel);
5020 static void qeth_read_ccw_conf_data(struct qeth_card *card)
5022 struct qeth_card_info *info = &card->info;
5023 struct ccw_device *cdev = CARD_DDEV(card);
5024 struct ccw_dev_id dev_id;
5026 QETH_CARD_TEXT(card, 2, "ccwconfd");
5027 ccw_device_get_id(cdev, &dev_id);
5029 info->ddev_devno = dev_id.devno;
5030 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5031 !ccw_device_get_iid(cdev, &info->iid) &&
5032 !ccw_device_get_chid(cdev, 0, &info->chid);
5033 info->ssid = dev_id.ssid;
5035 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5036 info->chid, info->chpid);
5038 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5039 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5040 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5041 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5042 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5043 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5044 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5047 static int qeth_qdio_establish(struct qeth_card *card)
5049 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5050 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
5051 struct qeth_qib_parms *qib_parms = NULL;
5052 struct qdio_initialize init_data;
5053 unsigned int no_input_qs = 1;
5057 QETH_CARD_TEXT(card, 2, "qdioest");
5059 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5060 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5064 qeth_fill_qib_parms(card, qib_parms);
5067 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
5068 if (card->options.cq == QETH_CQ_ENABLED) {
5069 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
5073 for (i = 0; i < card->qdio.no_out_queues; i++)
5074 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
5076 memset(&init_data, 0, sizeof(struct qdio_initialize));
5077 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5079 init_data.qib_param_field_format = 0;
5080 init_data.qib_param_field = (void *)qib_parms;
5081 init_data.no_input_qs = no_input_qs;
5082 init_data.no_output_qs = card->qdio.no_out_queues;
5083 init_data.input_handler = qeth_qdio_input_handler;
5084 init_data.output_handler = qeth_qdio_output_handler;
5085 init_data.irq_poll = qeth_qdio_poll;
5086 init_data.int_parm = (unsigned long) card;
5087 init_data.input_sbal_addr_array = in_sbal_ptrs;
5088 init_data.output_sbal_addr_array = out_sbal_ptrs;
5090 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5091 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5092 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5093 init_data.no_output_qs);
5095 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5098 rc = qdio_establish(CARD_DDEV(card), &init_data);
5100 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5101 qdio_free(CARD_DDEV(card));
5105 switch (card->options.cq) {
5106 case QETH_CQ_ENABLED:
5107 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5109 case QETH_CQ_DISABLED:
5110 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5121 static void qeth_core_free_card(struct qeth_card *card)
5123 QETH_CARD_TEXT(card, 2, "freecrd");
5125 unregister_service_level(&card->qeth_service_level);
5126 debugfs_remove_recursive(card->debugfs);
5127 qeth_put_cmd(card->read_cmd);
5128 destroy_workqueue(card->event_wq);
5129 dev_set_drvdata(&card->gdev->dev, NULL);
5133 static void qeth_trace_features(struct qeth_card *card)
5135 QETH_CARD_TEXT(card, 2, "features");
5136 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5137 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5138 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5139 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5140 sizeof(card->info.diagass_support));
5143 static struct ccw_device_id qeth_ids[] = {
5144 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5145 .driver_info = QETH_CARD_TYPE_OSD},
5146 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5147 .driver_info = QETH_CARD_TYPE_IQD},
5148 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5149 .driver_info = QETH_CARD_TYPE_OSM},
5150 #ifdef CONFIG_QETH_OSX
5151 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5152 .driver_info = QETH_CARD_TYPE_OSX},
5156 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5158 static struct ccw_driver qeth_ccw_driver = {
5160 .owner = THIS_MODULE,
5164 .probe = ccwgroup_probe_ccwdev,
5165 .remove = ccwgroup_remove_ccwdev,
5168 static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
5173 QETH_CARD_TEXT(card, 2, "hrdsetup");
5174 atomic_set(&card->force_alloc_skb, 0);
5175 rc = qeth_update_from_chp_desc(card);
5180 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5182 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
5183 qeth_stop_channel(&card->data);
5184 qeth_stop_channel(&card->write);
5185 qeth_stop_channel(&card->read);
5186 qdio_free(CARD_DDEV(card));
5188 rc = qeth_start_channel(&card->read);
5191 rc = qeth_start_channel(&card->write);
5194 rc = qeth_start_channel(&card->data);
5198 if (rc == -ERESTARTSYS) {
5199 QETH_CARD_TEXT(card, 2, "break1");
5202 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5209 qeth_determine_capabilities(card);
5210 qeth_read_ccw_conf_data(card);
5211 qeth_idx_init(card);
5213 rc = qeth_idx_activate_read_channel(card);
5215 QETH_CARD_TEXT(card, 2, "break2");
5218 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5225 rc = qeth_idx_activate_write_channel(card);
5227 QETH_CARD_TEXT(card, 2, "break3");
5230 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
5236 card->read_or_write_problem = 0;
5237 rc = qeth_mpc_initialize(card);
5239 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5243 rc = qeth_send_startlan(card);
5245 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5246 if (rc == -ENETDOWN) {
5247 dev_warn(&card->gdev->dev, "The LAN is offline\n");
5248 *carrier_ok = false;
5256 card->options.ipa4.supported = 0;
5257 card->options.ipa6.supported = 0;
5258 card->options.adp.supported = 0;
5259 card->options.sbp.supported_funcs = 0;
5260 card->info.diagass_support = 0;
5261 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5264 if (qeth_is_supported(card, IPA_IPV6)) {
5265 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5269 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5270 rc = qeth_query_setadapterparms(card);
5272 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
5276 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5277 rc = qeth_query_setdiagass(card);
5279 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5282 qeth_trace_features(card);
5284 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5285 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5286 card->info.hwtrap = 0;
5288 if (card->options.isolation != ISOLATION_MODE_NONE) {
5289 rc = qeth_setadpparms_set_access_ctrl(card,
5290 card->options.isolation);
5295 qeth_init_link_info(card);
5297 rc = qeth_init_qdio_queues(card);
5299 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5305 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5306 "an error on the device\n");
5307 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5308 CARD_DEVID(card), rc);
5312 static int qeth_set_online(struct qeth_card *card,
5313 const struct qeth_discipline *disc)
5318 mutex_lock(&card->conf_mutex);
5319 QETH_CARD_TEXT(card, 2, "setonlin");
5321 rc = qeth_hardsetup_card(card, &carrier_ok);
5323 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5328 qeth_print_status_message(card);
5330 if (card->dev->reg_state != NETREG_REGISTERED)
5331 /* no need for locking / error handling at this early stage: */
5332 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
5334 rc = disc->set_online(card, carrier_ok);
5338 /* let user_space know that device is online */
5339 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5341 mutex_unlock(&card->conf_mutex);
5346 qeth_qdio_clear_card(card, 0);
5347 qeth_clear_working_pool_list(card);
5348 qeth_flush_local_addrs(card);
5350 qeth_stop_channel(&card->data);
5351 qeth_stop_channel(&card->write);
5352 qeth_stop_channel(&card->read);
5353 qdio_free(CARD_DDEV(card));
5355 mutex_unlock(&card->conf_mutex);
5359 int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5364 mutex_lock(&card->conf_mutex);
5365 QETH_CARD_TEXT(card, 3, "setoffl");
5367 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5368 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5369 card->info.hwtrap = 1;
5372 /* cancel any stalled cmd that might block the rtnl: */
5373 qeth_clear_ipacmd_list(card);
5376 netif_device_detach(card->dev);
5377 netif_carrier_off(card->dev);
5380 cancel_work_sync(&card->rx_mode_work);
5382 disc->set_offline(card);
5384 qeth_qdio_clear_card(card, 0);
5385 qeth_drain_output_queues(card);
5386 qeth_clear_working_pool_list(card);
5387 qeth_flush_local_addrs(card);
5388 card->info.promisc_mode = 0;
5389 qeth_default_link_info(card);
5391 rc = qeth_stop_channel(&card->data);
5392 rc2 = qeth_stop_channel(&card->write);
5393 rc3 = qeth_stop_channel(&card->read);
5395 rc = (rc2) ? rc2 : rc3;
5397 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5398 qdio_free(CARD_DDEV(card));
5400 /* let user_space know that device is offline */
5401 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5403 mutex_unlock(&card->conf_mutex);
5406 EXPORT_SYMBOL_GPL(qeth_set_offline);
5408 static int qeth_do_reset(void *data)
5410 const struct qeth_discipline *disc;
5411 struct qeth_card *card = data;
5414 /* Lock-free, other users will block until we are done. */
5415 disc = card->discipline;
5417 QETH_CARD_TEXT(card, 2, "recover1");
5418 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5420 QETH_CARD_TEXT(card, 2, "recover2");
5421 dev_warn(&card->gdev->dev,
5422 "A recovery process has been started for the device\n");
5424 qeth_set_offline(card, disc, true);
5425 rc = qeth_set_online(card, disc);
5427 dev_info(&card->gdev->dev,
5428 "Device successfully recovered!\n");
5430 qeth_set_offline(card, disc, true);
5431 ccwgroup_set_offline(card->gdev, false);
5432 dev_warn(&card->gdev->dev,
5433 "The qeth device driver failed to recover an error on the device\n");
5435 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5436 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5440 #if IS_ENABLED(CONFIG_QETH_L3)
5441 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5442 struct qeth_hdr *hdr)
5444 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5445 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5446 struct net_device *dev = skb->dev;
5448 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5449 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5450 "FAKELL", skb->len);
5454 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5455 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5457 unsigned char tg_addr[ETH_ALEN];
5459 skb_reset_network_header(skb);
5460 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5461 case QETH_CAST_MULTICAST:
5462 if (prot == ETH_P_IP)
5463 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5465 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5466 QETH_CARD_STAT_INC(card, rx_multicast);
5468 case QETH_CAST_BROADCAST:
5469 ether_addr_copy(tg_addr, dev->broadcast);
5470 QETH_CARD_STAT_INC(card, rx_multicast);
5473 if (card->options.sniffer)
5474 skb->pkt_type = PACKET_OTHERHOST;
5475 ether_addr_copy(tg_addr, dev->dev_addr);
5478 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5479 dev_hard_header(skb, dev, prot, tg_addr,
5480 &l3_hdr->next_hop.rx.src_mac, skb->len);
5482 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5486 /* copy VLAN tag from hdr into skb */
5487 if (!card->options.sniffer &&
5488 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5489 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5490 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5492 l3_hdr->next_hop.rx.vlan_id;
5494 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5499 static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5500 bool uses_frags, bool is_cso)
5502 struct napi_struct *napi = &card->napi;
5504 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5505 skb->ip_summed = CHECKSUM_UNNECESSARY;
5506 QETH_CARD_STAT_INC(card, rx_skb_csum);
5508 skb->ip_summed = CHECKSUM_NONE;
5511 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5512 QETH_CARD_STAT_INC(card, rx_packets);
5513 if (skb_is_nonlinear(skb)) {
5514 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5515 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5516 skb_shinfo(skb)->nr_frags);
5520 napi_gro_frags(napi);
5522 skb->protocol = eth_type_trans(skb, skb->dev);
5523 napi_gro_receive(napi, skb);
5527 static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
5529 struct page *page = virt_to_page(data);
5530 unsigned int next_frag;
5532 next_frag = skb_shinfo(skb)->nr_frags;
5534 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5538 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5540 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5543 static int qeth_extract_skb(struct qeth_card *card,
5544 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
5547 struct qeth_priv *priv = netdev_priv(card->dev);
5548 struct qdio_buffer *buffer = qethbuffer->buffer;
5549 struct napi_struct *napi = &card->napi;
5550 struct qdio_buffer_element *element;
5551 unsigned int linear_len = 0;
5552 bool uses_frags = false;
5553 int offset = *__offset;
5554 bool use_rx_sg = false;
5555 unsigned int headroom;
5556 struct qeth_hdr *hdr;
5557 struct sk_buff *skb;
5561 element = &buffer->element[*element_no];
5564 /* qeth_hdr must not cross element boundaries */
5565 while (element->length < offset + sizeof(struct qeth_hdr)) {
5566 if (qeth_is_last_sbale(element))
5572 hdr = dma64_to_virt(element->addr) + offset;
5573 offset += sizeof(*hdr);
5576 switch (hdr->hdr.l2.id) {
5577 case QETH_HEADER_TYPE_LAYER2:
5578 skb_len = hdr->hdr.l2.pkt_length;
5579 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5581 linear_len = ETH_HLEN;
5584 case QETH_HEADER_TYPE_LAYER3:
5585 skb_len = hdr->hdr.l3.length;
5586 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5588 if (!IS_LAYER3(card)) {
5589 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5593 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5594 linear_len = ETH_HLEN;
5599 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5600 linear_len = sizeof(struct ipv6hdr);
5602 linear_len = sizeof(struct iphdr);
5603 headroom = ETH_HLEN;
5606 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5607 QETH_CARD_STAT_INC(card, rx_frame_errors);
5609 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5611 /* Can't determine packet length, drop the whole buffer. */
5612 return -EPROTONOSUPPORT;
5615 if (skb_len < linear_len) {
5616 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5620 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5621 (skb_len > READ_ONCE(priv->rx_copybreak) &&
5622 !atomic_read(&card->force_alloc_skb));
5625 /* QETH_CQ_ENABLED only: */
5626 if (qethbuffer->rx_skb &&
5627 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
5628 skb = qethbuffer->rx_skb;
5629 qethbuffer->rx_skb = NULL;
5633 skb = napi_get_frags(napi);
5635 /* -ENOMEM, no point in falling back further. */
5636 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5640 if (skb_tailroom(skb) >= linear_len + headroom) {
5645 netdev_info_once(card->dev,
5646 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5647 linear_len + headroom, skb_tailroom(skb));
5648 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
5651 linear_len = skb_len;
5652 skb = napi_alloc_skb(napi, linear_len + headroom);
5654 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5660 skb_reserve(skb, headroom);
5663 int data_len = min(skb_len, (int)(element->length - offset));
5664 char *data = dma64_to_virt(element->addr) + offset;
5666 skb_len -= data_len;
5669 /* Extract data from current element: */
5670 if (skb && data_len) {
5672 unsigned int copy_len;
5674 copy_len = min_t(unsigned int, linear_len,
5677 skb_put_data(skb, data, copy_len);
5678 linear_len -= copy_len;
5679 data_len -= copy_len;
5684 qeth_create_skb_frag(skb, data, data_len);
5687 /* Step forward to next element: */
5689 if (qeth_is_last_sbale(element)) {
5690 QETH_CARD_TEXT(card, 4, "unexeob");
5691 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5694 napi_free_frags(napi);
5697 QETH_CARD_STAT_INC(card,
5707 /* This packet was skipped, go get another one: */
5711 *element_no = element - &buffer->element[0];
5714 #if IS_ENABLED(CONFIG_QETH_L3)
5715 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3)
5716 qeth_l3_rebuild_skb(card, skb, hdr);
5719 qeth_receive_skb(card, skb, uses_frags, is_cso);
5723 static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5724 struct qeth_qdio_buffer *buf, bool *done)
5726 unsigned int work_done = 0;
5729 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
5730 &card->rx.e_offset)) {
5742 static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
5744 struct qeth_rx *ctx = &card->rx;
5745 unsigned int work_done = 0;
5747 while (budget > 0) {
5748 struct qeth_qdio_buffer *buffer;
5749 unsigned int skbs_done = 0;
5752 /* Fetch completed RX buffers: */
5753 if (!card->rx.b_count) {
5754 card->rx.qdio_err = 0;
5756 qdio_inspect_input_queue(CARD_DDEV(card), 0,
5758 &card->rx.qdio_err);
5759 if (card->rx.b_count <= 0) {
5760 card->rx.b_count = 0;
5765 /* Process one completed RX buffer: */
5766 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5767 if (!(card->rx.qdio_err &&
5768 qeth_check_qdio_errors(card, buffer->buffer,
5769 card->rx.qdio_err, "qinerr")))
5770 skbs_done = qeth_extract_skbs(card, budget, buffer,
5775 work_done += skbs_done;
5776 budget -= skbs_done;
5779 QETH_CARD_STAT_INC(card, rx_bufs);
5780 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
5781 buffer->pool_entry = NULL;
5784 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5787 /* Step forward to next buffer: */
5788 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5789 card->rx.buf_element = 0;
5790 card->rx.e_offset = 0;
5797 static void qeth_cq_poll(struct qeth_card *card)
5799 unsigned int work_done = 0;
5801 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5802 unsigned int start, error;
5805 completed = qdio_inspect_input_queue(CARD_DDEV(card), 1, &start,
5810 qeth_qdio_cq_handler(card, error, 1, start, completed);
5811 work_done += completed;
5815 int qeth_poll(struct napi_struct *napi, int budget)
5817 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5818 unsigned int work_done;
5820 work_done = qeth_rx_poll(card, budget);
5822 if (qeth_use_tx_irqs(card)) {
5823 struct qeth_qdio_out_q *queue;
5826 qeth_for_each_output_queue(card, queue, i) {
5827 if (!qeth_out_queue_is_empty(queue))
5828 napi_schedule(&queue->napi);
5832 if (card->options.cq == QETH_CQ_ENABLED)
5836 struct qeth_rx *ctx = &card->rx;
5838 /* Process any substantial refill backlog: */
5839 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5841 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
5842 if (work_done >= budget)
5846 if (napi_complete_done(napi, work_done) &&
5847 qdio_start_irq(CARD_DDEV(card)))
5848 napi_schedule(napi);
5852 EXPORT_SYMBOL_GPL(qeth_poll);
5854 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
5855 unsigned int bidx, unsigned int qdio_error,
5858 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5859 u8 sflags = buffer->buffer->element[15].sflags;
5860 struct qeth_card *card = queue->card;
5861 bool error = !!qdio_error;
5863 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
5864 struct qaob *aob = buffer->aob;
5865 struct qeth_qaob_priv1 *priv;
5866 enum iucv_tx_notify notify;
5869 netdev_WARN_ONCE(card->dev,
5870 "Pending TX buffer %#x without QAOB on TX queue %u\n",
5871 bidx, queue->queue_no);
5872 qeth_schedule_recovery(card);
5876 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5878 priv = (struct qeth_qaob_priv1 *)&aob->user1;
5879 /* QAOB hasn't completed yet: */
5880 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
5881 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5883 /* Prepare the queue slot for immediate re-use: */
5884 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5885 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
5886 QETH_CARD_TEXT(card, 2, "outofbuf");
5887 qeth_schedule_recovery(card);
5890 list_add(&buffer->list_entry, &queue->pending_bufs);
5891 /* Skip clearing the buffer: */
5895 /* QAOB already completed: */
5896 notify = qeth_compute_cq_notification(aob->aorc, 0);
5897 qeth_notify_skbs(queue, buffer, notify);
5898 error = !!aob->aorc;
5899 memset(aob, 0, sizeof(*aob));
5900 } else if (card->options.cq == QETH_CQ_ENABLED) {
5901 qeth_notify_skbs(queue, buffer,
5902 qeth_compute_cq_notification(sflags, 0));
5905 qeth_clear_output_buffer(queue, buffer, error, budget);
5908 static int qeth_tx_poll(struct napi_struct *napi, int budget)
5910 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5911 unsigned int queue_no = queue->queue_no;
5912 struct qeth_card *card = queue->card;
5913 struct net_device *dev = card->dev;
5914 unsigned int work_done = 0;
5915 struct netdev_queue *txq;
5918 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5920 txq = netdev_get_tx_queue(dev, queue_no);
5923 unsigned int start, error, i;
5924 unsigned int packets = 0;
5925 unsigned int bytes = 0;
5928 qeth_tx_complete_pending_bufs(card, queue, false, budget);
5930 if (qeth_out_queue_is_empty(queue)) {
5931 napi_complete(napi);
5935 /* Give the CPU a breather: */
5936 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5937 QETH_TXQ_STAT_INC(queue, completion_yield);
5938 if (napi_complete_done(napi, 0))
5939 napi_schedule(napi);
5943 completed = qdio_inspect_output_queue(CARD_DDEV(card), queue_no,
5945 if (completed <= 0) {
5946 /* Ensure we see TX completion for pending work: */
5947 if (napi_complete_done(napi, 0) &&
5948 !atomic_read(&queue->set_pci_flags_count))
5949 qeth_tx_arm_timer(queue, queue->rescan_usecs);
5953 for (i = start; i < start + completed; i++) {
5954 struct qeth_qdio_out_buffer *buffer;
5955 unsigned int bidx = QDIO_BUFNR(i);
5957 buffer = queue->bufs[bidx];
5958 packets += buffer->frames;
5959 bytes += buffer->bytes;
5961 qeth_handle_send_error(card, buffer, error);
5963 qeth_iqd_tx_complete(queue, bidx, error, budget);
5965 qeth_clear_output_buffer(queue, buffer, error,
5969 atomic_sub(completed, &queue->used_buffers);
5970 work_done += completed;
5972 netdev_tx_completed_queue(txq, packets, bytes);
5974 qeth_check_outbound_queue(queue);
5976 /* xmit may have observed the full-condition, but not yet
5977 * stopped the txq. In which case the code below won't trigger.
5978 * So before returning, xmit will re-check the txq's fill level
5979 * and wake it up if needed.
5981 if (netif_tx_queue_stopped(txq) &&
5982 !qeth_out_queue_is_full(queue))
5983 netif_tx_wake_queue(txq);
5987 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5989 if (!cmd->hdr.return_code)
5990 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5991 return cmd->hdr.return_code;
5994 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5995 struct qeth_reply *reply,
5998 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5999 struct qeth_ipa_caps *caps = reply->param;
6001 if (qeth_setassparms_inspect_rc(cmd))
6004 caps->supported = cmd->data.setassparms.data.caps.supported;
6005 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6009 int qeth_setassparms_cb(struct qeth_card *card,
6010 struct qeth_reply *reply, unsigned long data)
6012 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6014 QETH_CARD_TEXT(card, 4, "defadpcb");
6016 if (cmd->hdr.return_code)
6019 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6020 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
6021 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
6022 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
6023 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
6026 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
6028 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6029 enum qeth_ipa_funcs ipa_func,
6031 unsigned int data_length,
6032 enum qeth_prot_versions prot)
6034 struct qeth_ipacmd_setassparms *setassparms;
6035 struct qeth_ipacmd_setassparms_hdr *hdr;
6036 struct qeth_cmd_buffer *iob;
6038 QETH_CARD_TEXT(card, 4, "getasscm");
6039 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6041 offsetof(struct qeth_ipacmd_setassparms,
6046 setassparms = &__ipa_cmd(iob)->data.setassparms;
6047 setassparms->assist_no = ipa_func;
6049 hdr = &setassparms->hdr;
6050 hdr->length = sizeof(*hdr) + data_length;
6051 hdr->command_code = cmd_code;
6054 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
6056 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6057 enum qeth_ipa_funcs ipa_func,
6058 u16 cmd_code, u32 *data,
6059 enum qeth_prot_versions prot)
6061 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
6062 struct qeth_cmd_buffer *iob;
6064 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
6065 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
6070 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
6071 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
6073 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
6075 static void qeth_unregister_dbf_views(void)
6079 for (x = 0; x < QETH_DBF_INFOS; x++) {
6080 debug_unregister(qeth_dbf[x].id);
6081 qeth_dbf[x].id = NULL;
6085 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
6087 char dbf_txt_buf[32];
6090 if (!debug_level_enabled(id, level))
6092 va_start(args, fmt);
6093 vscnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6095 debug_text_event(id, level, dbf_txt_buf);
6097 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6099 static int qeth_register_dbf_views(void)
6104 for (x = 0; x < QETH_DBF_INFOS; x++) {
6105 /* register the areas */
6106 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6110 if (qeth_dbf[x].id == NULL) {
6111 qeth_unregister_dbf_views();
6115 /* register a view */
6116 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6118 qeth_unregister_dbf_views();
6122 /* set a passing level */
6123 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6129 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
6131 int qeth_setup_discipline(struct qeth_card *card,
6132 enum qeth_discipline_id discipline)
6136 mutex_lock(&qeth_mod_mutex);
6137 switch (discipline) {
6138 case QETH_DISCIPLINE_LAYER3:
6139 card->discipline = try_then_request_module(
6140 symbol_get(qeth_l3_discipline), "qeth_l3");
6142 case QETH_DISCIPLINE_LAYER2:
6143 card->discipline = try_then_request_module(
6144 symbol_get(qeth_l2_discipline), "qeth_l2");
6149 mutex_unlock(&qeth_mod_mutex);
6151 if (!card->discipline) {
6152 dev_err(&card->gdev->dev, "There is no kernel module to "
6153 "support discipline %d\n", discipline);
6157 rc = card->discipline->setup(card->gdev);
6159 if (discipline == QETH_DISCIPLINE_LAYER2)
6160 symbol_put(qeth_l2_discipline);
6162 symbol_put(qeth_l3_discipline);
6163 card->discipline = NULL;
6168 card->options.layer = discipline;
6172 void qeth_remove_discipline(struct qeth_card *card)
6174 card->discipline->remove(card->gdev);
6176 if (IS_LAYER2(card))
6177 symbol_put(qeth_l2_discipline);
6179 symbol_put(qeth_l3_discipline);
6180 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
6181 card->discipline = NULL;
6184 static const struct device_type qeth_generic_devtype = {
6185 .name = "qeth_generic",
6188 #define DBF_NAME_LEN 20
6190 struct qeth_dbf_entry {
6191 char dbf_name[DBF_NAME_LEN];
6192 debug_info_t *dbf_info;
6193 struct list_head dbf_list;
6196 static LIST_HEAD(qeth_dbf_list);
6197 static DEFINE_MUTEX(qeth_dbf_list_mutex);
6199 static debug_info_t *qeth_get_dbf_entry(char *name)
6201 struct qeth_dbf_entry *entry;
6202 debug_info_t *rc = NULL;
6204 mutex_lock(&qeth_dbf_list_mutex);
6205 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6206 if (strcmp(entry->dbf_name, name) == 0) {
6207 rc = entry->dbf_info;
6211 mutex_unlock(&qeth_dbf_list_mutex);
6215 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6217 struct qeth_dbf_entry *new_entry;
6219 card->debug = debug_register(name, 2, 1, 8);
6221 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6224 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6226 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6229 strscpy(new_entry->dbf_name, name, sizeof(new_entry->dbf_name));
6230 new_entry->dbf_info = card->debug;
6231 mutex_lock(&qeth_dbf_list_mutex);
6232 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6233 mutex_unlock(&qeth_dbf_list_mutex);
6238 debug_unregister(card->debug);
6243 static void qeth_clear_dbf_list(void)
6245 struct qeth_dbf_entry *entry, *tmp;
6247 mutex_lock(&qeth_dbf_list_mutex);
6248 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6249 list_del(&entry->dbf_list);
6250 debug_unregister(entry->dbf_info);
6253 mutex_unlock(&qeth_dbf_list_mutex);
6256 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6258 struct net_device *dev;
6259 struct qeth_priv *priv;
6261 switch (card->info.type) {
6262 case QETH_CARD_TYPE_IQD:
6263 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
6264 ether_setup, QETH_MAX_OUT_QUEUES, 1);
6266 case QETH_CARD_TYPE_OSM:
6267 dev = alloc_etherdev(sizeof(*priv));
6270 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
6276 priv = netdev_priv(dev);
6277 priv->rx_copybreak = QETH_RX_COPYBREAK;
6278 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
6280 dev->ml_priv = card;
6281 dev->watchdog_timeo = QETH_TX_TIMEOUT;
6283 /* initialized when device first goes online: */
6286 SET_NETDEV_DEV(dev, &card->gdev->dev);
6287 netif_carrier_off(dev);
6289 dev->ethtool_ops = &qeth_ethtool_ops;
6290 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6291 dev->hw_features |= NETIF_F_SG;
6292 dev->vlan_features |= NETIF_F_SG;
6294 dev->features |= NETIF_F_SG;
6299 struct net_device *qeth_clone_netdev(struct net_device *orig)
6301 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6306 clone->dev_port = orig->dev_port;
6310 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6312 struct qeth_card *card;
6315 enum qeth_discipline_id enforced_disc;
6316 char dbf_name[DBF_NAME_LEN];
6318 QETH_DBF_TEXT(SETUP, 2, "probedev");
6321 if (!get_device(dev))
6324 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
6326 card = qeth_alloc_card(gdev);
6328 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
6333 scnprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6334 dev_name(&gdev->dev));
6335 card->debug = qeth_get_dbf_entry(dbf_name);
6337 rc = qeth_add_dbf_entry(card, dbf_name);
6342 qeth_setup_card(card);
6343 card->dev = qeth_alloc_netdev(card);
6349 qeth_determine_capabilities(card);
6350 qeth_set_blkt_defaults(card);
6352 card->qdio.in_q = qeth_alloc_qdio_queue();
6353 if (!card->qdio.in_q) {
6358 card->qdio.no_out_queues = card->dev->num_tx_queues;
6359 rc = qeth_update_from_chp_desc(card);
6363 gdev->dev.groups = qeth_dev_groups;
6365 enforced_disc = qeth_enforce_discipline(card);
6366 switch (enforced_disc) {
6367 case QETH_DISCIPLINE_UNDETERMINED:
6368 gdev->dev.type = &qeth_generic_devtype;
6371 card->info.layer_enforced = true;
6372 /* It's so early that we don't need the discipline_mutex yet. */
6373 rc = qeth_setup_discipline(card, enforced_disc);
6375 goto err_setup_disc;
6384 qeth_free_qdio_queue(card->qdio.in_q);
6386 free_netdev(card->dev);
6388 qeth_core_free_card(card);
6394 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6396 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6398 QETH_CARD_TEXT(card, 2, "removedv");
6400 mutex_lock(&card->discipline_mutex);
6401 if (card->discipline)
6402 qeth_remove_discipline(card);
6403 mutex_unlock(&card->discipline_mutex);
6405 qeth_free_qdio_queues(card);
6407 qeth_free_qdio_queue(card->qdio.in_q);
6408 free_netdev(card->dev);
6409 qeth_core_free_card(card);
6410 put_device(&gdev->dev);
6413 static int qeth_core_set_online(struct ccwgroup_device *gdev)
6415 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6417 enum qeth_discipline_id def_discipline;
6419 mutex_lock(&card->discipline_mutex);
6420 if (!card->discipline) {
6421 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6422 QETH_DISCIPLINE_LAYER2;
6423 rc = qeth_setup_discipline(card, def_discipline);
6428 rc = qeth_set_online(card, card->discipline);
6431 mutex_unlock(&card->discipline_mutex);
6435 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6437 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6440 mutex_lock(&card->discipline_mutex);
6441 rc = qeth_set_offline(card, card->discipline, false);
6442 mutex_unlock(&card->discipline_mutex);
6447 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6449 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6451 qeth_set_allowed_threads(card, 0, 1);
6452 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6453 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6454 qeth_qdio_clear_card(card, 0);
6455 qeth_drain_output_queues(card);
6456 qdio_free(CARD_DDEV(card));
6459 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6464 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6467 return err ? err : count;
6469 static DRIVER_ATTR_WO(group);
6471 static struct attribute *qeth_drv_attrs[] = {
6472 &driver_attr_group.attr,
6475 static struct attribute_group qeth_drv_attr_group = {
6476 .attrs = qeth_drv_attrs,
6478 static const struct attribute_group *qeth_drv_attr_groups[] = {
6479 &qeth_drv_attr_group,
6483 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6485 .groups = qeth_drv_attr_groups,
6486 .owner = THIS_MODULE,
6489 .ccw_driver = &qeth_ccw_driver,
6490 .setup = qeth_core_probe_device,
6491 .remove = qeth_core_remove_device,
6492 .set_online = qeth_core_set_online,
6493 .set_offline = qeth_core_set_offline,
6494 .shutdown = qeth_core_shutdown,
6497 int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
6499 struct qeth_card *card = dev->ml_priv;
6503 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6504 rc = qeth_snmp_command(card, data);
6506 case SIOC_QETH_GET_CARD_TYPE:
6507 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6511 case SIOC_QETH_QUERY_OAT:
6512 rc = qeth_query_oat_command(card, data);
6518 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6521 EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
6523 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6525 struct qeth_card *card = dev->ml_priv;
6526 struct mii_ioctl_data *mii_data;
6531 mii_data = if_mii(rq);
6532 mii_data->phy_id = 0;
6535 mii_data = if_mii(rq);
6536 if (mii_data->phy_id != 0)
6539 mii_data->val_out = qeth_mdio_read(dev,
6540 mii_data->phy_id, mii_data->reg_num);
6546 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6549 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6551 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6554 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6555 u32 *features = reply->param;
6557 if (qeth_setassparms_inspect_rc(cmd))
6560 *features = cmd->data.setassparms.data.flags_32bit;
6564 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6565 enum qeth_prot_versions prot)
6567 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6571 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6572 enum qeth_prot_versions prot, u8 *lp2lp)
6574 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6575 struct qeth_cmd_buffer *iob;
6576 struct qeth_ipa_caps caps;
6580 /* some L3 HW requires combined L3+L4 csum offload: */
6581 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6582 cstype == IPA_OUTBOUND_CHECKSUM)
6583 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6585 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6590 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6594 if ((required_features & features) != required_features) {
6595 qeth_set_csum_off(card, cstype, prot);
6599 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6600 SETASS_DATA_SIZEOF(flags_32bit),
6603 qeth_set_csum_off(card, cstype, prot);
6607 if (features & QETH_IPA_CHECKSUM_LP2LP)
6608 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6609 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6610 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6612 qeth_set_csum_off(card, cstype, prot);
6616 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6617 !qeth_ipa_caps_enabled(&caps, required_features)) {
6618 qeth_set_csum_off(card, cstype, prot);
6622 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6623 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6626 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6631 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6632 enum qeth_prot_versions prot, u8 *lp2lp)
6634 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
6635 qeth_set_csum_off(card, cstype, prot);
6638 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6641 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6642 struct qeth_tso_start_data *tso_data = reply->param;
6644 if (qeth_setassparms_inspect_rc(cmd))
6647 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6648 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6652 static int qeth_set_tso_off(struct qeth_card *card,
6653 enum qeth_prot_versions prot)
6655 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6656 IPA_CMD_ASS_STOP, NULL, prot);
6659 static int qeth_set_tso_on(struct qeth_card *card,
6660 enum qeth_prot_versions prot)
6662 struct qeth_tso_start_data tso_data;
6663 struct qeth_cmd_buffer *iob;
6664 struct qeth_ipa_caps caps;
6667 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6668 IPA_CMD_ASS_START, 0, prot);
6672 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6676 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6677 qeth_set_tso_off(card, prot);
6681 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6683 SETASS_DATA_SIZEOF(caps), prot);
6685 qeth_set_tso_off(card, prot);
6689 /* enable TSO capability */
6690 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6691 QETH_IPA_LARGE_SEND_TCP;
6692 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6694 qeth_set_tso_off(card, prot);
6698 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6699 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6700 qeth_set_tso_off(card, prot);
6704 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6709 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6710 enum qeth_prot_versions prot)
6712 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6715 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6717 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6720 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6721 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6722 QETH_PROT_IPV4, NULL);
6723 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6724 /* no/one Offload Assist available, so the rc is trivial */
6727 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6728 QETH_PROT_IPV6, NULL);
6731 /* enable: success if any Assist is active */
6732 return (rc_ipv6) ? rc_ipv4 : 0;
6734 /* disable: failure if any Assist is still active */
6735 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6739 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6740 * @dev: a net_device
6742 void qeth_enable_hw_features(struct net_device *dev)
6744 struct qeth_card *card = dev->ml_priv;
6745 netdev_features_t features;
6747 features = dev->features;
6748 /* force-off any feature that might need an IPA sequence.
6749 * netdev_update_features() will restart them.
6751 dev->features &= ~dev->hw_features;
6752 /* toggle VLAN filter, so that VIDs are re-programmed: */
6753 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6754 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6755 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6757 netdev_update_features(dev);
6758 if (features != dev->features)
6759 dev_warn(&card->gdev->dev,
6760 "Device recovery failed to restore all offload features\n");
6762 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6764 static void qeth_check_restricted_features(struct qeth_card *card,
6765 netdev_features_t changed,
6766 netdev_features_t actual)
6768 netdev_features_t ipv6_features = NETIF_F_TSO6;
6769 netdev_features_t ipv4_features = NETIF_F_TSO;
6771 if (!card->info.has_lp2lp_cso_v6)
6772 ipv6_features |= NETIF_F_IPV6_CSUM;
6773 if (!card->info.has_lp2lp_cso_v4)
6774 ipv4_features |= NETIF_F_IP_CSUM;
6776 if ((changed & ipv6_features) && !(actual & ipv6_features))
6777 qeth_flush_local_addrs6(card);
6778 if ((changed & ipv4_features) && !(actual & ipv4_features))
6779 qeth_flush_local_addrs4(card);
6782 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6784 struct qeth_card *card = dev->ml_priv;
6785 netdev_features_t changed = dev->features ^ features;
6788 QETH_CARD_TEXT(card, 2, "setfeat");
6789 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6791 if ((changed & NETIF_F_IP_CSUM)) {
6792 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6793 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6794 &card->info.has_lp2lp_cso_v4);
6796 changed ^= NETIF_F_IP_CSUM;
6798 if (changed & NETIF_F_IPV6_CSUM) {
6799 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6800 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6801 &card->info.has_lp2lp_cso_v6);
6803 changed ^= NETIF_F_IPV6_CSUM;
6805 if (changed & NETIF_F_RXCSUM) {
6806 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6808 changed ^= NETIF_F_RXCSUM;
6810 if (changed & NETIF_F_TSO) {
6811 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6814 changed ^= NETIF_F_TSO;
6816 if (changed & NETIF_F_TSO6) {
6817 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6820 changed ^= NETIF_F_TSO6;
6823 qeth_check_restricted_features(card, dev->features ^ features,
6824 dev->features ^ changed);
6826 /* everything changed successfully? */
6827 if ((dev->features ^ features) == changed)
6829 /* something went wrong. save changed features and return error */
6830 dev->features ^= changed;
6833 EXPORT_SYMBOL_GPL(qeth_set_features);
6835 netdev_features_t qeth_fix_features(struct net_device *dev,
6836 netdev_features_t features)
6838 struct qeth_card *card = dev->ml_priv;
6840 QETH_CARD_TEXT(card, 2, "fixfeat");
6841 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6842 features &= ~NETIF_F_IP_CSUM;
6843 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6844 features &= ~NETIF_F_IPV6_CSUM;
6845 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6846 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6847 features &= ~NETIF_F_RXCSUM;
6848 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6849 features &= ~NETIF_F_TSO;
6850 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6851 features &= ~NETIF_F_TSO6;
6853 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6856 EXPORT_SYMBOL_GPL(qeth_fix_features);
6858 netdev_features_t qeth_features_check(struct sk_buff *skb,
6859 struct net_device *dev,
6860 netdev_features_t features)
6862 struct qeth_card *card = dev->ml_priv;
6864 /* Traffic with local next-hop is not eligible for some offloads: */
6865 if (skb->ip_summed == CHECKSUM_PARTIAL &&
6866 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
6867 netdev_features_t restricted = 0;
6869 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
6870 restricted |= NETIF_F_ALL_TSO;
6872 switch (vlan_get_protocol(skb)) {
6873 case htons(ETH_P_IP):
6874 if (!card->info.has_lp2lp_cso_v4)
6875 restricted |= NETIF_F_IP_CSUM;
6877 if (restricted && qeth_next_hop_is_local_v4(card, skb))
6878 features &= ~restricted;
6880 case htons(ETH_P_IPV6):
6881 if (!card->info.has_lp2lp_cso_v6)
6882 restricted |= NETIF_F_IPV6_CSUM;
6884 if (restricted && qeth_next_hop_is_local_v6(card, skb))
6885 features &= ~restricted;
6892 /* GSO segmentation builds skbs with
6893 * a (small) linear part for the headers, and
6894 * page frags for the data.
6895 * Compared to a linear skb, the header-only part consumes an
6896 * additional buffer element. This reduces buffer utilization, and
6897 * hurts throughput. So compress small segments into one element.
6899 if (netif_needs_gso(skb, features)) {
6900 /* match skb_segment(): */
6901 unsigned int doffset = skb->data - skb_mac_header(skb);
6902 unsigned int hsize = skb_shinfo(skb)->gso_size;
6903 unsigned int hroom = skb_headroom(skb);
6905 /* linearize only if resulting skb allocations are order-0: */
6906 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6907 features &= ~NETIF_F_SG;
6910 return vlan_features_check(skb, features);
6912 EXPORT_SYMBOL_GPL(qeth_features_check);
6914 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6916 struct qeth_card *card = dev->ml_priv;
6917 struct qeth_qdio_out_q *queue;
6920 QETH_CARD_TEXT(card, 5, "getstat");
6922 stats->rx_packets = card->stats.rx_packets;
6923 stats->rx_bytes = card->stats.rx_bytes;
6924 stats->rx_errors = card->stats.rx_length_errors +
6925 card->stats.rx_frame_errors +
6926 card->stats.rx_fifo_errors;
6927 stats->rx_dropped = card->stats.rx_dropped_nomem +
6928 card->stats.rx_dropped_notsupp +
6929 card->stats.rx_dropped_runt;
6930 stats->multicast = card->stats.rx_multicast;
6931 stats->rx_length_errors = card->stats.rx_length_errors;
6932 stats->rx_frame_errors = card->stats.rx_frame_errors;
6933 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
6935 for (i = 0; i < card->qdio.no_out_queues; i++) {
6936 queue = card->qdio.out_qs[i];
6938 stats->tx_packets += queue->stats.tx_packets;
6939 stats->tx_bytes += queue->stats.tx_bytes;
6940 stats->tx_errors += queue->stats.tx_errors;
6941 stats->tx_dropped += queue->stats.tx_dropped;
6944 EXPORT_SYMBOL_GPL(qeth_get_stats64);
6946 #define TC_IQD_UCAST 0
6947 static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
6948 unsigned int ucast_txqs)
6952 /* IQD requires mcast traffic to be placed on a dedicated queue, and
6953 * qeth_iqd_select_queue() deals with this.
6954 * For unicast traffic, we defer the queue selection to the stack.
6955 * By installing a trivial prio map that spans over only the unicast
6956 * queues, we can encourage the stack to spread the ucast traffic evenly
6957 * without selecting the mcast queue.
6960 /* One traffic class, spanning over all active ucast queues: */
6961 netdev_set_num_tc(dev, 1);
6962 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
6963 QETH_IQD_MIN_UCAST_TXQ);
6965 /* Map all priorities to this traffic class: */
6966 for (prio = 0; prio <= TC_BITMASK; prio++)
6967 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
6970 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
6972 struct net_device *dev = card->dev;
6975 /* Per netif_setup_tc(), adjust the mapping first: */
6977 qeth_iqd_set_prio_tc_map(dev, count - 1);
6979 rc = netif_set_real_num_tx_queues(dev, count);
6981 if (rc && IS_IQD(card))
6982 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
6986 EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
6988 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6989 u8 cast_type, struct net_device *sb_dev)
6993 if (cast_type != RTN_UNICAST)
6994 return QETH_IQD_MCAST_TXQ;
6995 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
6996 return QETH_IQD_MIN_UCAST_TXQ;
6998 txq = netdev_pick_tx(dev, skb, sb_dev);
6999 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
7001 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7003 u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
7004 struct net_device *sb_dev)
7006 struct qeth_card *card = dev->ml_priv;
7008 if (qeth_uses_tx_prio_queueing(card))
7009 return qeth_get_priority_queue(card, skb);
7011 return netdev_pick_tx(dev, skb, sb_dev);
7013 EXPORT_SYMBOL_GPL(qeth_osa_select_queue);
7015 int qeth_open(struct net_device *dev)
7017 struct qeth_card *card = dev->ml_priv;
7018 struct qeth_qdio_out_q *queue;
7021 QETH_CARD_TEXT(card, 4, "qethopen");
7023 card->data.state = CH_STATE_UP;
7024 netif_tx_start_all_queues(dev);
7027 qeth_for_each_output_queue(card, queue, i) {
7028 netif_napi_add_tx(dev, &queue->napi, qeth_tx_poll);
7029 napi_enable(&queue->napi);
7030 napi_schedule(&queue->napi);
7033 napi_enable(&card->napi);
7034 napi_schedule(&card->napi);
7035 /* kick-start the NAPI softirq: */
7040 EXPORT_SYMBOL_GPL(qeth_open);
7042 int qeth_stop(struct net_device *dev)
7044 struct qeth_card *card = dev->ml_priv;
7045 struct qeth_qdio_out_q *queue;
7048 QETH_CARD_TEXT(card, 4, "qethstop");
7050 napi_disable(&card->napi);
7051 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7052 qdio_stop_irq(CARD_DDEV(card));
7054 /* Quiesce the NAPI instances: */
7055 qeth_for_each_output_queue(card, queue, i)
7056 napi_disable(&queue->napi);
7058 /* Stop .ndo_start_xmit, might still access queue->napi. */
7059 netif_tx_disable(dev);
7061 qeth_for_each_output_queue(card, queue, i) {
7062 del_timer_sync(&queue->timer);
7063 /* Queues may get re-allocated, so remove the NAPIs. */
7064 netif_napi_del(&queue->napi);
7069 EXPORT_SYMBOL_GPL(qeth_stop);
7071 static int __init qeth_core_init(void)
7075 pr_info("loading core functions\n");
7077 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7079 rc = qeth_register_dbf_views();
7082 qeth_core_root_dev = root_device_register("qeth");
7083 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
7086 qeth_core_header_cache =
7087 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7088 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7090 if (!qeth_core_header_cache) {
7094 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7095 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7096 if (!qeth_qdio_outbuf_cache) {
7101 qeth_qaob_cache = kmem_cache_create("qeth_qaob",
7102 sizeof(struct qaob),
7103 sizeof(struct qaob),
7105 if (!qeth_qaob_cache) {
7110 rc = ccw_driver_register(&qeth_ccw_driver);
7113 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7120 ccw_driver_unregister(&qeth_ccw_driver);
7122 kmem_cache_destroy(qeth_qaob_cache);
7124 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7126 kmem_cache_destroy(qeth_core_header_cache);
7128 root_device_unregister(qeth_core_root_dev);
7130 qeth_unregister_dbf_views();
7132 debugfs_remove_recursive(qeth_debugfs_root);
7133 pr_err("Initializing the qeth device driver failed\n");
7137 static void __exit qeth_core_exit(void)
7139 qeth_clear_dbf_list();
7140 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7141 ccw_driver_unregister(&qeth_ccw_driver);
7142 kmem_cache_destroy(qeth_qaob_cache);
7143 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7144 kmem_cache_destroy(qeth_core_header_cache);
7145 root_device_unregister(qeth_core_root_dev);
7146 qeth_unregister_dbf_views();
7147 debugfs_remove_recursive(qeth_debugfs_root);
7148 pr_info("core functions removed\n");
7151 module_init(qeth_core_init);
7152 module_exit(qeth_core_exit);
7153 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7154 MODULE_DESCRIPTION("qeth core functions");
7155 MODULE_LICENSE("GPL");