1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13 #include <linux/compat.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/log2.h>
22 #include <linux/tcp.h>
23 #include <linux/mii.h>
25 #include <linux/kthread.h>
26 #include <linux/slab.h>
27 #include <linux/if_vlan.h>
28 #include <linux/netdevice.h>
29 #include <linux/netdev_features.h>
30 #include <linux/rcutree.h>
31 #include <linux/skbuff.h>
32 #include <linux/vmalloc.h>
34 #include <net/iucv/af_iucv.h>
35 #include <net/dsfield.h>
38 #include <asm/ebcdic.h>
39 #include <asm/chpid.h>
40 #include <asm/sysinfo.h>
43 #include <asm/ccwdev.h>
44 #include <asm/cpcmd.h>
46 #include "qeth_core.h"
48 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
49 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
51 [QETH_DBF_SETUP] = {"qeth_setup",
52 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
53 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
54 &debug_sprintf_view, NULL},
55 [QETH_DBF_CTRL] = {"qeth_control",
56 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
58 EXPORT_SYMBOL_GPL(qeth_dbf);
60 static struct kmem_cache *qeth_core_header_cache;
61 static struct kmem_cache *qeth_qdio_outbuf_cache;
62 static struct kmem_cache *qeth_qaob_cache;
64 static struct device *qeth_core_root_dev;
65 static struct dentry *qeth_debugfs_root;
66 static struct lock_class_key qdio_out_skb_queue_key;
68 static void qeth_issue_next_read_cb(struct qeth_card *card,
69 struct qeth_cmd_buffer *iob,
70 unsigned int data_length);
71 static int qeth_qdio_establish(struct qeth_card *);
72 static void qeth_free_qdio_queues(struct qeth_card *card);
74 static const char *qeth_get_cardname(struct qeth_card *card)
76 if (IS_VM_NIC(card)) {
77 switch (card->info.type) {
78 case QETH_CARD_TYPE_OSD:
79 return " Virtual NIC QDIO";
80 case QETH_CARD_TYPE_IQD:
81 return " Virtual NIC Hiper";
82 case QETH_CARD_TYPE_OSM:
83 return " Virtual NIC QDIO - OSM";
84 case QETH_CARD_TYPE_OSX:
85 return " Virtual NIC QDIO - OSX";
90 switch (card->info.type) {
91 case QETH_CARD_TYPE_OSD:
92 return " OSD Express";
93 case QETH_CARD_TYPE_IQD:
94 return " HiperSockets";
95 case QETH_CARD_TYPE_OSM:
97 case QETH_CARD_TYPE_OSX:
106 /* max length to be returned: 14 */
107 const char *qeth_get_cardname_short(struct qeth_card *card)
109 if (IS_VM_NIC(card)) {
110 switch (card->info.type) {
111 case QETH_CARD_TYPE_OSD:
112 return "Virt.NIC QDIO";
113 case QETH_CARD_TYPE_IQD:
114 return "Virt.NIC Hiper";
115 case QETH_CARD_TYPE_OSM:
116 return "Virt.NIC OSM";
117 case QETH_CARD_TYPE_OSX:
118 return "Virt.NIC OSX";
123 switch (card->info.type) {
124 case QETH_CARD_TYPE_OSD:
125 switch (card->info.link_type) {
126 case QETH_LINK_TYPE_FAST_ETH:
128 case QETH_LINK_TYPE_HSTR:
130 case QETH_LINK_TYPE_GBIT_ETH:
132 case QETH_LINK_TYPE_10GBIT_ETH:
134 case QETH_LINK_TYPE_25GBIT_ETH:
136 case QETH_LINK_TYPE_LANE_ETH100:
137 return "OSD_FE_LANE";
138 case QETH_LINK_TYPE_LANE_TR:
139 return "OSD_TR_LANE";
140 case QETH_LINK_TYPE_LANE_ETH1000:
141 return "OSD_GbE_LANE";
142 case QETH_LINK_TYPE_LANE:
143 return "OSD_ATM_LANE";
145 return "OSD_Express";
147 case QETH_CARD_TYPE_IQD:
148 return "HiperSockets";
149 case QETH_CARD_TYPE_OSM:
151 case QETH_CARD_TYPE_OSX:
160 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
161 int clear_start_mask)
165 spin_lock_irqsave(&card->thread_mask_lock, flags);
166 card->thread_allowed_mask = threads;
167 if (clear_start_mask)
168 card->thread_start_mask &= threads;
169 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
170 wake_up(&card->wait_q);
172 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
174 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
179 spin_lock_irqsave(&card->thread_mask_lock, flags);
180 rc = (card->thread_running_mask & threads);
181 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
184 EXPORT_SYMBOL_GPL(qeth_threads_running);
186 static void qeth_clear_working_pool_list(struct qeth_card *card)
188 struct qeth_buffer_pool_entry *pool_entry, *tmp;
189 struct qeth_qdio_q *queue = card->qdio.in_q;
192 QETH_CARD_TEXT(card, 5, "clwrklst");
193 list_for_each_entry_safe(pool_entry, tmp,
194 &card->qdio.in_buf_pool.entry_list, list)
195 list_del(&pool_entry->list);
197 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
198 queue->bufs[i].pool_entry = NULL;
201 static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
205 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
206 if (entry->elements[i])
207 __free_page(entry->elements[i]);
213 static void qeth_free_buffer_pool(struct qeth_card *card)
215 struct qeth_buffer_pool_entry *entry, *tmp;
217 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
219 list_del(&entry->init_list);
220 qeth_free_pool_entry(entry);
224 static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
226 struct qeth_buffer_pool_entry *entry;
229 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
233 for (i = 0; i < pages; i++) {
234 entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
236 if (!entry->elements[i]) {
237 qeth_free_pool_entry(entry);
245 static int qeth_alloc_buffer_pool(struct qeth_card *card)
247 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
250 QETH_CARD_TEXT(card, 5, "alocpool");
251 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
252 struct qeth_buffer_pool_entry *entry;
254 entry = qeth_alloc_pool_entry(buf_elements);
256 qeth_free_buffer_pool(card);
260 list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
265 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
267 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
268 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
269 struct qeth_buffer_pool_entry *entry, *tmp;
270 int delta = count - pool->buf_count;
273 QETH_CARD_TEXT(card, 2, "realcbp");
275 /* Defer until pool is allocated: */
276 if (list_empty(&pool->entry_list))
279 /* Remove entries from the pool: */
281 entry = list_first_entry(&pool->entry_list,
282 struct qeth_buffer_pool_entry,
284 list_del(&entry->init_list);
285 qeth_free_pool_entry(entry);
290 /* Allocate additional entries: */
292 entry = qeth_alloc_pool_entry(buf_elements);
294 list_for_each_entry_safe(entry, tmp, &entries,
296 list_del(&entry->init_list);
297 qeth_free_pool_entry(entry);
303 list_add(&entry->init_list, &entries);
308 list_splice(&entries, &pool->entry_list);
311 card->qdio.in_buf_pool.buf_count = count;
312 pool->buf_count = count;
315 EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
317 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
322 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
326 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
328 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
334 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
339 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
340 q->bufs[i].buffer = q->qdio_bufs[i];
342 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
346 static int qeth_cq_init(struct qeth_card *card)
350 if (card->options.cq == QETH_CQ_ENABLED) {
351 QETH_CARD_TEXT(card, 2, "cqinit");
352 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
353 QDIO_MAX_BUFFERS_PER_Q);
354 card->qdio.c_q->next_buf_to_init = 127;
356 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 1, 0, 127);
358 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
367 static int qeth_alloc_cq(struct qeth_card *card)
369 if (card->options.cq == QETH_CQ_ENABLED) {
370 QETH_CARD_TEXT(card, 2, "cqon");
371 card->qdio.c_q = qeth_alloc_qdio_queue();
372 if (!card->qdio.c_q) {
373 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
377 QETH_CARD_TEXT(card, 2, "nocq");
378 card->qdio.c_q = NULL;
383 static void qeth_free_cq(struct qeth_card *card)
385 if (card->qdio.c_q) {
386 qeth_free_qdio_queue(card->qdio.c_q);
387 card->qdio.c_q = NULL;
391 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
394 enum iucv_tx_notify n;
398 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
404 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
405 TX_NOTIFY_UNREACHABLE;
408 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
409 TX_NOTIFY_GENERALERROR;
416 static void qeth_put_cmd(struct qeth_cmd_buffer *iob)
418 if (refcount_dec_and_test(&iob->ref_count)) {
423 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
426 ccw->cmd_code = cmd_code;
427 ccw->flags = flags | CCW_FLAG_SLI;
429 ccw->cda = (__u32)virt_to_phys(data);
432 static int __qeth_issue_next_read(struct qeth_card *card)
434 struct qeth_cmd_buffer *iob = card->read_cmd;
435 struct qeth_channel *channel = iob->channel;
436 struct ccw1 *ccw = __ccw_from_cmd(iob);
439 QETH_CARD_TEXT(card, 5, "issnxrd");
440 if (channel->state != CH_STATE_UP)
443 memset(iob->data, 0, iob->length);
444 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
445 iob->callback = qeth_issue_next_read_cb;
446 /* keep the cmd alive after completion: */
449 QETH_CARD_TEXT(card, 6, "noirqpnd");
450 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
452 channel->active_cmd = iob;
454 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
455 rc, CARD_DEVID(card));
456 qeth_unlock_channel(card, channel);
458 card->read_or_write_problem = 1;
459 qeth_schedule_recovery(card);
464 static int qeth_issue_next_read(struct qeth_card *card)
468 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
469 ret = __qeth_issue_next_read(card);
470 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
475 static void qeth_enqueue_cmd(struct qeth_card *card,
476 struct qeth_cmd_buffer *iob)
478 spin_lock_irq(&card->lock);
479 list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
480 spin_unlock_irq(&card->lock);
483 static void qeth_dequeue_cmd(struct qeth_card *card,
484 struct qeth_cmd_buffer *iob)
486 spin_lock_irq(&card->lock);
487 list_del(&iob->list_entry);
488 spin_unlock_irq(&card->lock);
491 static void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
494 complete(&iob->done);
497 static void qeth_flush_local_addrs4(struct qeth_card *card)
499 struct qeth_local_addr *addr;
500 struct hlist_node *tmp;
503 spin_lock_irq(&card->local_addrs4_lock);
504 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
505 hash_del_rcu(&addr->hnode);
506 kfree_rcu(addr, rcu);
508 spin_unlock_irq(&card->local_addrs4_lock);
511 static void qeth_flush_local_addrs6(struct qeth_card *card)
513 struct qeth_local_addr *addr;
514 struct hlist_node *tmp;
517 spin_lock_irq(&card->local_addrs6_lock);
518 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
519 hash_del_rcu(&addr->hnode);
520 kfree_rcu(addr, rcu);
522 spin_unlock_irq(&card->local_addrs6_lock);
525 static void qeth_flush_local_addrs(struct qeth_card *card)
527 qeth_flush_local_addrs4(card);
528 qeth_flush_local_addrs6(card);
531 static void qeth_add_local_addrs4(struct qeth_card *card,
532 struct qeth_ipacmd_local_addrs4 *cmd)
536 if (cmd->addr_length !=
537 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
538 dev_err_ratelimited(&card->gdev->dev,
539 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
544 spin_lock(&card->local_addrs4_lock);
545 for (i = 0; i < cmd->count; i++) {
546 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
547 struct qeth_local_addr *addr;
548 bool duplicate = false;
550 hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
551 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
560 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
562 dev_err(&card->gdev->dev,
563 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
564 &cmd->addrs[i].addr);
568 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
569 hash_add_rcu(card->local_addrs4, &addr->hnode, key);
571 spin_unlock(&card->local_addrs4_lock);
574 static void qeth_add_local_addrs6(struct qeth_card *card,
575 struct qeth_ipacmd_local_addrs6 *cmd)
579 if (cmd->addr_length !=
580 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
581 dev_err_ratelimited(&card->gdev->dev,
582 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
587 spin_lock(&card->local_addrs6_lock);
588 for (i = 0; i < cmd->count; i++) {
589 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
590 struct qeth_local_addr *addr;
591 bool duplicate = false;
593 hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
594 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
603 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
605 dev_err(&card->gdev->dev,
606 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
607 &cmd->addrs[i].addr);
611 addr->addr = cmd->addrs[i].addr;
612 hash_add_rcu(card->local_addrs6, &addr->hnode, key);
614 spin_unlock(&card->local_addrs6_lock);
617 static void qeth_del_local_addrs4(struct qeth_card *card,
618 struct qeth_ipacmd_local_addrs4 *cmd)
622 if (cmd->addr_length !=
623 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
624 dev_err_ratelimited(&card->gdev->dev,
625 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
630 spin_lock(&card->local_addrs4_lock);
631 for (i = 0; i < cmd->count; i++) {
632 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
633 unsigned int key = ipv4_addr_hash(addr->addr);
634 struct qeth_local_addr *tmp;
636 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
637 if (tmp->addr.s6_addr32[3] == addr->addr) {
638 hash_del_rcu(&tmp->hnode);
644 spin_unlock(&card->local_addrs4_lock);
647 static void qeth_del_local_addrs6(struct qeth_card *card,
648 struct qeth_ipacmd_local_addrs6 *cmd)
652 if (cmd->addr_length !=
653 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
654 dev_err_ratelimited(&card->gdev->dev,
655 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
660 spin_lock(&card->local_addrs6_lock);
661 for (i = 0; i < cmd->count; i++) {
662 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
663 u32 key = ipv6_addr_hash(&addr->addr);
664 struct qeth_local_addr *tmp;
666 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
667 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
668 hash_del_rcu(&tmp->hnode);
674 spin_unlock(&card->local_addrs6_lock);
677 static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
680 struct qeth_local_addr *tmp;
681 bool is_local = false;
685 if (hash_empty(card->local_addrs4))
689 next_hop = qeth_next_hop_v4_rcu(skb,
690 qeth_dst_check_rcu(skb, htons(ETH_P_IP)));
691 key = ipv4_addr_hash(next_hop);
693 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
694 if (tmp->addr.s6_addr32[3] == next_hop) {
704 static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
707 struct qeth_local_addr *tmp;
708 struct in6_addr *next_hop;
709 bool is_local = false;
712 if (hash_empty(card->local_addrs6))
716 next_hop = qeth_next_hop_v6_rcu(skb,
717 qeth_dst_check_rcu(skb, htons(ETH_P_IPV6)));
718 key = ipv6_addr_hash(next_hop);
720 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
721 if (ipv6_addr_equal(&tmp->addr, next_hop)) {
731 static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
733 struct qeth_card *card = m->private;
734 struct qeth_local_addr *tmp;
738 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
739 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
740 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
741 seq_printf(m, "%pI6c\n", &tmp->addr);
747 DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
749 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
750 struct qeth_card *card)
752 const char *ipa_name;
753 int com = cmd->hdr.command;
755 ipa_name = qeth_get_ipa_cmd_name(com);
758 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
759 ipa_name, com, CARD_DEVID(card), rc,
760 qeth_get_ipa_msg(rc));
762 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
763 ipa_name, com, CARD_DEVID(card));
766 static 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);
1183 * qeth_irq() - qeth interrupt handler
1185 * @intparm: expect pointer to iob
1186 * @irb: Interruption Response Block
1189 * corresponding qeth channel is locked with last used iob as active_cmd.
1190 * But this function is also called for error interrupts.
1192 * Caller ensures that:
1193 * Interrupts are disabled; ccw device lock is held;
1196 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1201 struct qeth_cmd_buffer *iob = NULL;
1202 struct ccwgroup_device *gdev;
1203 struct qeth_channel *channel;
1204 struct qeth_card *card;
1206 /* while we hold the ccwdev lock, this stays valid: */
1207 gdev = dev_get_drvdata(&cdev->dev);
1208 card = dev_get_drvdata(&gdev->dev);
1210 QETH_CARD_TEXT(card, 5, "irq");
1212 if (card->read.ccwdev == cdev) {
1213 channel = &card->read;
1214 QETH_CARD_TEXT(card, 5, "read");
1215 } else if (card->write.ccwdev == cdev) {
1216 channel = &card->write;
1217 QETH_CARD_TEXT(card, 5, "write");
1219 channel = &card->data;
1220 QETH_CARD_TEXT(card, 5, "data");
1224 QETH_CARD_TEXT(card, 5, "irqunsol");
1225 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1226 QETH_CARD_TEXT(card, 5, "irqunexp");
1229 "Received IRQ with intparm %lx, expected %px\n",
1230 intparm, channel->active_cmd);
1231 if (channel->active_cmd)
1232 qeth_cancel_cmd(channel->active_cmd, -EIO);
1234 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1237 rc = qeth_check_irb_error(card, cdev, irb);
1239 /* IO was terminated, free its resources. */
1240 qeth_unlock_channel(card, channel);
1242 qeth_cancel_cmd(iob, rc);
1246 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
1247 channel->state = CH_STATE_STOPPED;
1248 wake_up(&card->wait_q);
1251 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
1252 channel->state = CH_STATE_HALTED;
1253 wake_up(&card->wait_q);
1256 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1257 SCSW_FCTL_HALT_FUNC))) {
1258 qeth_cancel_cmd(iob, -ECANCELED);
1262 cstat = irb->scsw.cmd.cstat;
1263 dstat = irb->scsw.cmd.dstat;
1265 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1266 (dstat & DEV_STAT_UNIT_CHECK) ||
1268 if (irb->esw.esw0.erw.cons) {
1269 dev_warn(&channel->ccwdev->dev,
1270 "The qeth device driver failed to recover "
1271 "an error on the device\n");
1272 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1273 CCW_DEVID(channel->ccwdev), cstat,
1275 print_hex_dump(KERN_WARNING, "qeth: irb ",
1276 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1277 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1278 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1281 rc = qeth_get_problem(card, cdev, irb);
1283 card->read_or_write_problem = 1;
1284 qeth_unlock_channel(card, channel);
1286 qeth_cancel_cmd(iob, rc);
1287 qeth_clear_ipacmd_list(card);
1288 qeth_schedule_recovery(card);
1293 if (scsw_cmd_is_valid_cc(&irb->scsw) && irb->scsw.cmd.cc == 1 && iob) {
1294 /* channel command hasn't started: retry.
1295 * active_cmd is still set to last iob
1297 QETH_CARD_TEXT(card, 2, "irqcc1");
1298 rc = ccw_device_start_timeout(cdev, __ccw_from_cmd(iob),
1299 (addr_t)iob, 0, 0, iob->timeout);
1302 "ccw retry on %x failed, rc = %i\n",
1303 CARD_DEVID(card), rc);
1304 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1305 qeth_unlock_channel(card, channel);
1306 qeth_cancel_cmd(iob, rc);
1311 qeth_unlock_channel(card, channel);
1315 if (irb->scsw.cmd.count > iob->length) {
1316 qeth_cancel_cmd(iob, -EIO);
1320 iob->callback(card, iob,
1321 iob->length - irb->scsw.cmd.count);
1325 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1326 struct qeth_qdio_out_buffer *buf,
1327 enum iucv_tx_notify notification)
1329 struct sk_buff *skb;
1331 skb_queue_walk(&buf->skb_list, skb) {
1332 struct sock *sk = skb->sk;
1334 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1335 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1336 if (sk && sk->sk_family == PF_IUCV)
1337 iucv_sk(sk)->sk_txnotify(sk, notification);
1341 static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1342 struct qeth_qdio_out_buffer *buf, bool error,
1345 struct sk_buff *skb;
1348 if (buf->next_element_to_fill == 0)
1351 QETH_TXQ_STAT_INC(queue, bufs);
1352 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1354 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1356 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1357 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1360 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1361 unsigned int bytes = qdisc_pkt_len(skb);
1362 bool is_tso = skb_is_gso(skb);
1363 unsigned int packets;
1365 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1367 if (skb->ip_summed == CHECKSUM_PARTIAL)
1368 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1369 if (skb_is_nonlinear(skb))
1370 QETH_TXQ_STAT_INC(queue, skbs_sg);
1372 QETH_TXQ_STAT_INC(queue, skbs_tso);
1373 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1377 napi_consume_skb(skb, budget);
1381 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1382 struct qeth_qdio_out_buffer *buf,
1383 bool error, int budget)
1387 /* is PCI flag set on buffer? */
1388 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
1389 atomic_dec(&queue->set_pci_flags_count);
1390 QETH_TXQ_STAT_INC(queue, completion_irq);
1393 qeth_tx_complete_buf(queue, buf, error, budget);
1395 for (i = 0; i < queue->max_elements; ++i) {
1396 void *data = phys_to_virt(buf->buffer->element[i].addr);
1398 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
1399 kmem_cache_free(qeth_core_header_cache, data);
1402 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1403 buf->next_element_to_fill = 0;
1406 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1409 static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1412 kmem_cache_free(qeth_qaob_cache, buf->aob);
1413 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1416 static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1417 struct qeth_qdio_out_q *queue,
1418 bool drain, int budget)
1420 struct qeth_qdio_out_buffer *buf, *tmp;
1422 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
1423 struct qeth_qaob_priv1 *priv;
1424 struct qaob *aob = buf->aob;
1425 enum iucv_tx_notify notify;
1428 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1429 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
1430 QETH_CARD_TEXT(card, 5, "fp");
1431 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1433 notify = drain ? TX_NOTIFY_GENERALERROR :
1434 qeth_compute_cq_notification(aob->aorc, 1);
1435 qeth_notify_skbs(queue, buf, notify);
1436 qeth_tx_complete_buf(queue, buf, drain, budget);
1439 i < aob->sb_count && i < queue->max_elements;
1441 void *data = phys_to_virt(aob->sba[i]);
1443 if (test_bit(i, buf->from_kmem_cache) && data)
1444 kmem_cache_free(qeth_core_header_cache,
1448 list_del(&buf->list_entry);
1449 qeth_free_out_buf(buf);
1454 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1458 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
1460 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1464 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1466 qeth_free_out_buf(q->bufs[j]);
1472 static void qeth_drain_output_queues(struct qeth_card *card)
1476 QETH_CARD_TEXT(card, 2, "clearqdbf");
1477 /* clear outbound buffers to free skbs */
1478 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1479 if (card->qdio.out_qs[i])
1480 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1484 static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1486 unsigned int max = single ? 1 : card->dev->num_tx_queues;
1488 if (card->qdio.no_out_queues == max)
1491 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1492 qeth_free_qdio_queues(card);
1494 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
1495 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1497 card->qdio.no_out_queues = max;
1500 static int qeth_update_from_chp_desc(struct qeth_card *card)
1502 struct ccw_device *ccwdev;
1503 struct channel_path_desc_fmt0 *chp_dsc;
1505 QETH_CARD_TEXT(card, 2, "chp_desc");
1507 ccwdev = card->data.ccwdev;
1508 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1512 card->info.func_level = 0x4100 + chp_dsc->desc;
1514 if (IS_OSD(card) || IS_OSX(card))
1515 /* CHPP field bit 6 == 1 -> single queue */
1516 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1519 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1520 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1524 static void qeth_init_qdio_info(struct qeth_card *card)
1526 QETH_CARD_TEXT(card, 4, "intqdinf");
1527 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1528 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1529 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1532 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1534 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1536 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1537 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1538 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1539 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1542 static void qeth_set_initial_options(struct qeth_card *card)
1544 card->options.route4.type = NO_ROUTER;
1545 card->options.route6.type = NO_ROUTER;
1546 card->options.isolation = ISOLATION_MODE_NONE;
1547 card->options.cq = QETH_CQ_DISABLED;
1548 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1551 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1553 unsigned long flags;
1556 spin_lock_irqsave(&card->thread_mask_lock, flags);
1557 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1558 (u8) card->thread_start_mask,
1559 (u8) card->thread_allowed_mask,
1560 (u8) card->thread_running_mask);
1561 rc = (card->thread_start_mask & thread);
1562 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1566 static int qeth_do_reset(void *data);
1567 static void qeth_start_kernel_thread(struct work_struct *work)
1569 struct task_struct *ts;
1570 struct qeth_card *card = container_of(work, struct qeth_card,
1571 kernel_thread_starter);
1572 QETH_CARD_TEXT(card, 2, "strthrd");
1574 if (card->read.state != CH_STATE_UP &&
1575 card->write.state != CH_STATE_UP)
1577 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1578 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
1580 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1581 qeth_clear_thread_running_bit(card,
1582 QETH_RECOVER_THREAD);
1587 static void qeth_buffer_reclaim_work(struct work_struct *);
1588 static void qeth_setup_card(struct qeth_card *card)
1590 QETH_CARD_TEXT(card, 2, "setupcrd");
1592 card->info.type = CARD_RDEV(card)->id.driver_info;
1593 card->state = CARD_STATE_DOWN;
1594 spin_lock_init(&card->lock);
1595 spin_lock_init(&card->thread_mask_lock);
1596 mutex_init(&card->conf_mutex);
1597 mutex_init(&card->discipline_mutex);
1598 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1599 INIT_LIST_HEAD(&card->cmd_waiter_list);
1600 init_waitqueue_head(&card->wait_q);
1601 qeth_set_initial_options(card);
1602 /* IP address takeover */
1603 INIT_LIST_HEAD(&card->ipato.entries);
1604 qeth_init_qdio_info(card);
1605 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1606 hash_init(card->rx_mode_addrs);
1607 hash_init(card->local_addrs4);
1608 hash_init(card->local_addrs6);
1609 spin_lock_init(&card->local_addrs4_lock);
1610 spin_lock_init(&card->local_addrs6_lock);
1613 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1615 struct qeth_card *card = container_of(slr, struct qeth_card,
1616 qeth_service_level);
1617 if (card->info.mcl_level[0])
1618 seq_printf(m, "qeth: %s firmware level %s\n",
1619 CARD_BUS_ID(card), card->info.mcl_level);
1622 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1624 struct qeth_card *card;
1626 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1627 card = kzalloc(sizeof(*card), GFP_KERNEL);
1630 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1633 dev_set_drvdata(&gdev->dev, card);
1634 CARD_RDEV(card) = gdev->cdev[0];
1635 CARD_WDEV(card) = gdev->cdev[1];
1636 CARD_DDEV(card) = gdev->cdev[2];
1638 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1639 dev_name(&gdev->dev));
1640 if (!card->event_wq)
1643 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1644 if (!card->read_cmd)
1647 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1649 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1650 &qeth_debugfs_local_addr_fops);
1652 card->qeth_service_level.seq_print = qeth_core_sl_print;
1653 register_service_level(&card->qeth_service_level);
1657 destroy_workqueue(card->event_wq);
1659 dev_set_drvdata(&gdev->dev, NULL);
1665 static int qeth_clear_channel(struct qeth_card *card,
1666 struct qeth_channel *channel)
1670 QETH_CARD_TEXT(card, 3, "clearch");
1671 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1672 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1673 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1677 rc = wait_event_interruptible_timeout(card->wait_q,
1678 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1679 if (rc == -ERESTARTSYS)
1681 if (channel->state != CH_STATE_STOPPED)
1683 channel->state = CH_STATE_DOWN;
1687 static int qeth_halt_channel(struct qeth_card *card,
1688 struct qeth_channel *channel)
1692 QETH_CARD_TEXT(card, 3, "haltch");
1693 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1694 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1695 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1699 rc = wait_event_interruptible_timeout(card->wait_q,
1700 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1701 if (rc == -ERESTARTSYS)
1703 if (channel->state != CH_STATE_HALTED)
1708 static int qeth_stop_channel(struct qeth_channel *channel)
1710 struct ccw_device *cdev = channel->ccwdev;
1713 rc = ccw_device_set_offline(cdev);
1715 spin_lock_irq(get_ccwdev_lock(cdev));
1716 if (channel->active_cmd)
1717 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1718 channel->active_cmd);
1720 cdev->handler = NULL;
1721 spin_unlock_irq(get_ccwdev_lock(cdev));
1726 static int qeth_start_channel(struct qeth_channel *channel)
1728 struct ccw_device *cdev = channel->ccwdev;
1731 channel->state = CH_STATE_DOWN;
1732 xchg(&channel->active_cmd, NULL);
1734 spin_lock_irq(get_ccwdev_lock(cdev));
1735 cdev->handler = qeth_irq;
1736 spin_unlock_irq(get_ccwdev_lock(cdev));
1738 rc = ccw_device_set_online(cdev);
1745 spin_lock_irq(get_ccwdev_lock(cdev));
1746 cdev->handler = NULL;
1747 spin_unlock_irq(get_ccwdev_lock(cdev));
1751 static int qeth_halt_channels(struct qeth_card *card)
1753 int rc1 = 0, rc2 = 0, rc3 = 0;
1755 QETH_CARD_TEXT(card, 3, "haltchs");
1756 rc1 = qeth_halt_channel(card, &card->read);
1757 rc2 = qeth_halt_channel(card, &card->write);
1758 rc3 = qeth_halt_channel(card, &card->data);
1766 static int qeth_clear_channels(struct qeth_card *card)
1768 int rc1 = 0, rc2 = 0, rc3 = 0;
1770 QETH_CARD_TEXT(card, 3, "clearchs");
1771 rc1 = qeth_clear_channel(card, &card->read);
1772 rc2 = qeth_clear_channel(card, &card->write);
1773 rc3 = qeth_clear_channel(card, &card->data);
1781 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1785 QETH_CARD_TEXT(card, 3, "clhacrd");
1788 rc = qeth_halt_channels(card);
1791 return qeth_clear_channels(card);
1794 static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1798 QETH_CARD_TEXT(card, 3, "qdioclr");
1799 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1800 QETH_QDIO_CLEANING)) {
1801 case QETH_QDIO_ESTABLISHED:
1803 rc = qdio_shutdown(CARD_DDEV(card),
1804 QDIO_FLAG_CLEANUP_USING_HALT);
1806 rc = qdio_shutdown(CARD_DDEV(card),
1807 QDIO_FLAG_CLEANUP_USING_CLEAR);
1809 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1810 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1812 case QETH_QDIO_CLEANING:
1817 rc = qeth_clear_halt_card(card, use_halt);
1819 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1823 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1825 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1826 struct diag26c_vnic_resp *response = NULL;
1827 struct diag26c_vnic_req *request = NULL;
1828 struct ccw_dev_id id;
1832 QETH_CARD_TEXT(card, 2, "vmlayer");
1834 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1838 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1839 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1840 if (!request || !response) {
1845 ccw_device_get_id(CARD_RDEV(card), &id);
1846 request->resp_buf_len = sizeof(*response);
1847 request->resp_version = DIAG26C_VERSION6_VM65918;
1848 request->req_format = DIAG26C_VNIC_INFO;
1850 memcpy(&request->sys_name, userid, 8);
1851 request->devno = id.devno;
1853 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1854 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1855 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1858 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1860 if (request->resp_buf_len < sizeof(*response) ||
1861 response->version != request->resp_version) {
1866 if (response->protocol == VNIC_INFO_PROT_L2)
1867 disc = QETH_DISCIPLINE_LAYER2;
1868 else if (response->protocol == VNIC_INFO_PROT_L3)
1869 disc = QETH_DISCIPLINE_LAYER3;
1875 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1879 /* Determine whether the device requires a specific layer discipline */
1880 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1882 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1885 disc = QETH_DISCIPLINE_LAYER2;
1886 else if (IS_VM_NIC(card))
1887 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1888 qeth_vm_detect_layer(card);
1891 case QETH_DISCIPLINE_LAYER2:
1892 QETH_CARD_TEXT(card, 3, "force l2");
1894 case QETH_DISCIPLINE_LAYER3:
1895 QETH_CARD_TEXT(card, 3, "force l3");
1898 QETH_CARD_TEXT(card, 3, "force no");
1904 static void qeth_set_blkt_defaults(struct qeth_card *card)
1906 QETH_CARD_TEXT(card, 2, "cfgblkt");
1908 if (card->info.use_v1_blkt) {
1909 card->info.blkt.time_total = 0;
1910 card->info.blkt.inter_packet = 0;
1911 card->info.blkt.inter_packet_jumbo = 0;
1913 card->info.blkt.time_total = 250;
1914 card->info.blkt.inter_packet = 5;
1915 card->info.blkt.inter_packet_jumbo = 15;
1919 static void qeth_idx_init(struct qeth_card *card)
1921 memset(&card->seqno, 0, sizeof(card->seqno));
1923 card->token.issuer_rm_w = 0x00010103UL;
1924 card->token.cm_filter_w = 0x00010108UL;
1925 card->token.cm_connection_w = 0x0001010aUL;
1926 card->token.ulp_filter_w = 0x0001010bUL;
1927 card->token.ulp_connection_w = 0x0001010dUL;
1929 switch (card->info.type) {
1930 case QETH_CARD_TYPE_IQD:
1931 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1933 case QETH_CARD_TYPE_OSD:
1934 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1941 static void qeth_idx_finalize_cmd(struct qeth_card *card,
1942 struct qeth_cmd_buffer *iob)
1944 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1945 QETH_SEQ_NO_LENGTH);
1946 if (iob->channel == &card->write)
1947 card->seqno.trans_hdr++;
1950 static int qeth_peer_func_level(int level)
1952 if ((level & 0xff) == 8)
1953 return (level & 0xff) + 0x400;
1954 if (((level >> 8) & 3) == 1)
1955 return (level & 0xff) + 0x200;
1959 static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1960 struct qeth_cmd_buffer *iob)
1962 qeth_idx_finalize_cmd(card, iob);
1964 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1965 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1966 card->seqno.pdu_hdr++;
1967 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1968 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1970 iob->callback = qeth_release_buffer_cb;
1973 static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1974 struct qeth_cmd_buffer *reply)
1976 /* MPC cmds are issued strictly in sequence. */
1977 return !IS_IPA(reply->data);
1980 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1982 unsigned int data_length)
1984 struct qeth_cmd_buffer *iob;
1986 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1990 memcpy(iob->data, data, data_length);
1991 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1993 iob->finalize = qeth_mpc_finalize_cmd;
1994 iob->match = qeth_mpc_match_reply;
1999 * qeth_send_control_data() - send control command to the card
2000 * @card: qeth_card structure pointer
2001 * @iob: qeth_cmd_buffer pointer
2002 * @reply_cb: callback function pointer
2003 * cb_card: pointer to the qeth_card structure
2004 * cb_reply: pointer to the qeth_reply structure
2005 * cb_cmd: pointer to the original iob for non-IPA
2006 * commands, or to the qeth_ipa_cmd structure
2007 * for the IPA commands.
2008 * @reply_param: private pointer passed to the callback
2010 * Callback function gets called one or more times, with cb_cmd
2011 * pointing to the response returned by the hardware. Callback
2012 * function must return
2013 * > 0 if more reply blocks are expected,
2014 * 0 if the last or only reply block is received, and
2016 * Callback function can get the value of the reply_param pointer from the
2017 * field 'param' of the structure qeth_reply.
2020 static int qeth_send_control_data(struct qeth_card *card,
2021 struct qeth_cmd_buffer *iob,
2022 int (*reply_cb)(struct qeth_card *cb_card,
2023 struct qeth_reply *cb_reply,
2024 unsigned long cb_cmd),
2027 struct qeth_channel *channel = iob->channel;
2028 struct qeth_reply *reply = &iob->reply;
2029 long timeout = iob->timeout;
2032 QETH_CARD_TEXT(card, 2, "sendctl");
2034 reply->callback = reply_cb;
2035 reply->param = reply_param;
2037 timeout = wait_event_interruptible_timeout(card->wait_q,
2038 qeth_trylock_channel(channel, iob),
2042 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2046 iob->finalize(card, iob);
2047 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
2049 qeth_enqueue_cmd(card, iob);
2051 /* This pairs with iob->callback, and keeps the iob alive after IO: */
2054 QETH_CARD_TEXT(card, 6, "noirqpnd");
2055 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
2056 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
2057 (addr_t) iob, 0, 0, timeout);
2058 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
2060 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
2061 CARD_DEVID(card), rc);
2062 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2063 qeth_dequeue_cmd(card, iob);
2065 qeth_unlock_channel(card, channel);
2069 timeout = wait_for_completion_interruptible_timeout(&iob->done,
2072 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2074 qeth_dequeue_cmd(card, iob);
2077 /* Wait until the callback for a late reply has completed: */
2078 spin_lock_irq(&iob->lock);
2080 /* Zap any callback that's still pending: */
2082 spin_unlock_irq(&iob->lock);
2093 struct qeth_node_desc {
2094 struct node_descriptor nd1;
2095 struct node_descriptor nd2;
2096 struct node_descriptor nd3;
2099 static void qeth_read_conf_data_cb(struct qeth_card *card,
2100 struct qeth_cmd_buffer *iob,
2101 unsigned int data_length)
2103 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
2107 QETH_CARD_TEXT(card, 2, "cfgunit");
2109 if (data_length < sizeof(*nd)) {
2114 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2115 nd->nd1.plant[1] == _ascebc['M'];
2116 tag = (u8 *)&nd->nd1.tag;
2117 card->info.chpid = tag[0];
2118 card->info.unit_addr2 = tag[1];
2120 tag = (u8 *)&nd->nd2.tag;
2121 card->info.cula = tag[1];
2123 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2124 nd->nd3.model[1] == 0xF0 &&
2125 nd->nd3.model[2] >= 0xF1 &&
2126 nd->nd3.model[2] <= 0xF4;
2129 qeth_notify_cmd(iob, rc);
2133 static int qeth_read_conf_data(struct qeth_card *card)
2135 struct qeth_channel *channel = &card->data;
2136 struct qeth_cmd_buffer *iob;
2139 /* scan for RCD command in extended SenseID data */
2140 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2141 if (!ciw || ciw->cmd == 0)
2143 if (ciw->count < sizeof(struct qeth_node_desc))
2146 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2150 iob->callback = qeth_read_conf_data_cb;
2151 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2154 return qeth_send_control_data(card, iob, NULL, NULL);
2157 static int qeth_idx_check_activate_response(struct qeth_card *card,
2158 struct qeth_channel *channel,
2159 struct qeth_cmd_buffer *iob)
2163 rc = qeth_check_idx_response(card, iob->data);
2167 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2170 /* negative reply: */
2171 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2172 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2174 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2175 case QETH_IDX_ACT_ERR_EXCL:
2176 dev_err(&channel->ccwdev->dev,
2177 "The adapter is used exclusively by another host\n");
2179 case QETH_IDX_ACT_ERR_AUTH:
2180 case QETH_IDX_ACT_ERR_AUTH_USER:
2181 dev_err(&channel->ccwdev->dev,
2182 "Setting the device online failed because of insufficient authorization\n");
2185 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2186 CCW_DEVID(channel->ccwdev));
2191 static void qeth_idx_activate_read_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, "idxrdcb");
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 != qeth_peer_func_level(card->info.func_level)) {
2207 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2208 CCW_DEVID(channel->ccwdev),
2209 card->info.func_level, peer_level);
2214 memcpy(&card->token.issuer_rm_r,
2215 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2216 QETH_MPC_TOKEN_LENGTH);
2217 memcpy(&card->info.mcl_level[0],
2218 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2221 qeth_notify_cmd(iob, rc);
2225 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
2226 struct qeth_cmd_buffer *iob,
2227 unsigned int data_length)
2229 struct qeth_channel *channel = iob->channel;
2233 QETH_CARD_TEXT(card, 2, "idxwrcb");
2235 rc = qeth_idx_check_activate_response(card, channel, iob);
2239 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2240 if ((peer_level & ~0x0100) !=
2241 qeth_peer_func_level(card->info.func_level)) {
2242 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2243 CCW_DEVID(channel->ccwdev),
2244 card->info.func_level, peer_level);
2249 qeth_notify_cmd(iob, rc);
2253 static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2254 struct qeth_cmd_buffer *iob)
2256 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2257 u8 port = ((u8)card->dev->dev_port) | 0x80;
2258 struct ccw1 *ccw = __ccw_from_cmd(iob);
2260 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2262 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2263 iob->finalize = qeth_idx_finalize_cmd;
2265 port |= QETH_IDX_ACT_INVAL_FRAME;
2266 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2267 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2268 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2269 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2270 &card->info.func_level, 2);
2271 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2272 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2275 static int qeth_idx_activate_read_channel(struct qeth_card *card)
2277 struct qeth_channel *channel = &card->read;
2278 struct qeth_cmd_buffer *iob;
2281 QETH_CARD_TEXT(card, 2, "idxread");
2283 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2287 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2288 qeth_idx_setup_activate_cmd(card, iob);
2289 iob->callback = qeth_idx_activate_read_channel_cb;
2291 rc = qeth_send_control_data(card, iob, NULL, NULL);
2295 channel->state = CH_STATE_UP;
2299 static int qeth_idx_activate_write_channel(struct qeth_card *card)
2301 struct qeth_channel *channel = &card->write;
2302 struct qeth_cmd_buffer *iob;
2305 QETH_CARD_TEXT(card, 2, "idxwrite");
2307 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2311 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2312 qeth_idx_setup_activate_cmd(card, iob);
2313 iob->callback = qeth_idx_activate_write_channel_cb;
2315 rc = qeth_send_control_data(card, iob, NULL, NULL);
2319 channel->state = CH_STATE_UP;
2323 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2326 struct qeth_cmd_buffer *iob;
2328 QETH_CARD_TEXT(card, 2, "cmenblcb");
2330 iob = (struct qeth_cmd_buffer *) data;
2331 memcpy(&card->token.cm_filter_r,
2332 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2333 QETH_MPC_TOKEN_LENGTH);
2337 static int qeth_cm_enable(struct qeth_card *card)
2339 struct qeth_cmd_buffer *iob;
2341 QETH_CARD_TEXT(card, 2, "cmenable");
2343 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2347 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2348 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2349 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2350 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2352 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2355 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2358 struct qeth_cmd_buffer *iob;
2360 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2362 iob = (struct qeth_cmd_buffer *) data;
2363 memcpy(&card->token.cm_connection_r,
2364 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2365 QETH_MPC_TOKEN_LENGTH);
2369 static int qeth_cm_setup(struct qeth_card *card)
2371 struct qeth_cmd_buffer *iob;
2373 QETH_CARD_TEXT(card, 2, "cmsetup");
2375 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2379 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2380 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2381 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2382 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2383 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2384 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2385 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2388 static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2390 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2391 link_type == QETH_LINK_TYPE_HSTR) {
2392 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2399 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2401 struct net_device *dev = card->dev;
2402 unsigned int new_mtu;
2405 /* IQD needs accurate max MTU to set up its RX buffers: */
2408 /* tolerate quirky HW: */
2409 max_mtu = ETH_MAX_MTU;
2414 /* move any device with default MTU to new max MTU: */
2415 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2417 /* adjust RX buffer size to new max MTU: */
2418 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2419 if (dev->max_mtu && dev->max_mtu != max_mtu)
2420 qeth_free_qdio_queues(card);
2424 /* default MTUs for first setup: */
2425 else if (IS_LAYER2(card))
2426 new_mtu = ETH_DATA_LEN;
2428 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2431 dev->max_mtu = max_mtu;
2432 dev->mtu = min(new_mtu, max_mtu);
2437 static int qeth_get_mtu_outof_framesize(int framesize)
2439 switch (framesize) {
2453 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2456 __u16 mtu, framesize;
2458 struct qeth_cmd_buffer *iob;
2461 QETH_CARD_TEXT(card, 2, "ulpenacb");
2463 iob = (struct qeth_cmd_buffer *) data;
2464 memcpy(&card->token.ulp_filter_r,
2465 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2466 QETH_MPC_TOKEN_LENGTH);
2468 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2469 mtu = qeth_get_mtu_outof_framesize(framesize);
2471 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2473 *(u16 *)reply->param = mtu;
2475 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2476 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2478 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2479 if (!qeth_is_supported_link_type(card, link_type))
2480 return -EPROTONOSUPPORT;
2483 card->info.link_type = link_type;
2484 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2488 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2490 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
2493 static int qeth_ulp_enable(struct qeth_card *card)
2495 u8 prot_type = qeth_mpc_select_prot_type(card);
2496 struct qeth_cmd_buffer *iob;
2500 QETH_CARD_TEXT(card, 2, "ulpenabl");
2502 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2506 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2507 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2508 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2509 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2510 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2511 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2512 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2515 return qeth_update_max_mtu(card, max_mtu);
2518 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2521 struct qeth_cmd_buffer *iob;
2523 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2525 iob = (struct qeth_cmd_buffer *) data;
2526 memcpy(&card->token.ulp_connection_r,
2527 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2528 QETH_MPC_TOKEN_LENGTH);
2529 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2531 QETH_CARD_TEXT(card, 2, "olmlimit");
2532 dev_err(&card->gdev->dev, "A connection could not be "
2533 "established because of an OLM limit\n");
2539 static int qeth_ulp_setup(struct qeth_card *card)
2542 struct qeth_cmd_buffer *iob;
2544 QETH_CARD_TEXT(card, 2, "ulpsetup");
2546 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2550 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2551 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2552 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2553 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2554 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2555 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2557 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
2558 temp = (card->info.cula << 8) + card->info.unit_addr2;
2559 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2560 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2563 static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2566 struct qeth_qdio_out_buffer *newbuf;
2568 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
2572 newbuf->buffer = q->qdio_bufs[bidx];
2573 skb_queue_head_init(&newbuf->skb_list);
2574 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2575 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2576 q->bufs[bidx] = newbuf;
2580 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2585 qeth_drain_output_queue(q, true);
2586 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2590 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2592 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2598 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2601 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
2602 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
2610 qeth_free_out_buf(q->bufs[--i]);
2611 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2617 static void qeth_tx_completion_timer(struct timer_list *timer)
2619 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2621 napi_schedule(&queue->napi);
2622 QETH_TXQ_STAT_INC(queue, completion_timer);
2625 static int qeth_alloc_qdio_queues(struct qeth_card *card)
2629 QETH_CARD_TEXT(card, 2, "allcqdbf");
2631 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2632 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2635 /* inbound buffer pool */
2636 if (qeth_alloc_buffer_pool(card))
2637 goto out_buffer_pool;
2640 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2641 struct qeth_qdio_out_q *queue;
2643 queue = qeth_alloc_output_queue();
2646 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2647 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2648 card->qdio.out_qs[i] = queue;
2650 queue->queue_no = i;
2651 INIT_LIST_HEAD(&queue->pending_bufs);
2652 spin_lock_init(&queue->lock);
2653 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2655 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2656 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2657 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2659 queue->coalesce_usecs = USEC_PER_SEC;
2660 queue->max_coalesced_frames = 0;
2661 queue->rescan_usecs = 10 * USEC_PER_SEC;
2663 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
2667 if (qeth_alloc_cq(card))
2674 qeth_free_output_queue(card->qdio.out_qs[--i]);
2675 card->qdio.out_qs[i] = NULL;
2677 qeth_free_buffer_pool(card);
2679 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2683 static void qeth_free_qdio_queues(struct qeth_card *card)
2687 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2688 QETH_QDIO_UNINITIALIZED)
2692 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2693 if (card->qdio.in_q->bufs[j].rx_skb) {
2694 consume_skb(card->qdio.in_q->bufs[j].rx_skb);
2695 card->qdio.in_q->bufs[j].rx_skb = NULL;
2699 /* inbound buffer pool */
2700 qeth_free_buffer_pool(card);
2701 /* free outbound qdio_qs */
2702 for (i = 0; i < card->qdio.no_out_queues; i++) {
2703 qeth_free_output_queue(card->qdio.out_qs[i]);
2704 card->qdio.out_qs[i] = NULL;
2708 static void qeth_fill_qib_parms(struct qeth_card *card,
2709 struct qeth_qib_parms *parms)
2711 struct qeth_qdio_out_q *queue;
2714 parms->pcit_magic[0] = 'P';
2715 parms->pcit_magic[1] = 'C';
2716 parms->pcit_magic[2] = 'I';
2717 parms->pcit_magic[3] = 'T';
2718 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2719 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2720 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2721 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2723 parms->blkt_magic[0] = 'B';
2724 parms->blkt_magic[1] = 'L';
2725 parms->blkt_magic[2] = 'K';
2726 parms->blkt_magic[3] = 'T';
2727 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2728 parms->blkt_total = card->info.blkt.time_total;
2729 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2730 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
2732 /* Prio-queueing implicitly uses the default priorities: */
2733 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2736 parms->pque_magic[0] = 'P';
2737 parms->pque_magic[1] = 'Q';
2738 parms->pque_magic[2] = 'U';
2739 parms->pque_magic[3] = 'E';
2740 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2741 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2742 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2744 qeth_for_each_output_queue(card, queue, i)
2745 parms->pque_priority[i] = queue->priority;
2748 static int qeth_qdio_activate(struct qeth_card *card)
2750 QETH_CARD_TEXT(card, 3, "qdioact");
2751 return qdio_activate(CARD_DDEV(card));
2754 static int qeth_dm_act(struct qeth_card *card)
2756 struct qeth_cmd_buffer *iob;
2758 QETH_CARD_TEXT(card, 2, "dmact");
2760 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2764 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2765 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2766 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2767 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2768 return qeth_send_control_data(card, iob, NULL, NULL);
2771 static int qeth_mpc_initialize(struct qeth_card *card)
2775 QETH_CARD_TEXT(card, 2, "mpcinit");
2777 rc = qeth_issue_next_read(card);
2779 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2782 rc = qeth_cm_enable(card);
2784 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2787 rc = qeth_cm_setup(card);
2789 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2792 rc = qeth_ulp_enable(card);
2794 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2797 rc = qeth_ulp_setup(card);
2799 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2802 rc = qeth_alloc_qdio_queues(card);
2804 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2807 rc = qeth_qdio_establish(card);
2809 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2810 qeth_free_qdio_queues(card);
2813 rc = qeth_qdio_activate(card);
2815 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2818 rc = qeth_dm_act(card);
2820 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2827 static void qeth_print_status_message(struct qeth_card *card)
2829 switch (card->info.type) {
2830 case QETH_CARD_TYPE_OSD:
2831 case QETH_CARD_TYPE_OSM:
2832 case QETH_CARD_TYPE_OSX:
2833 /* VM will use a non-zero first character
2834 * to indicate a HiperSockets like reporting
2835 * of the level OSA sets the first character to zero
2837 if (!card->info.mcl_level[0]) {
2838 scnprintf(card->info.mcl_level,
2839 sizeof(card->info.mcl_level),
2841 card->info.mcl_level[2],
2842 card->info.mcl_level[3]);
2846 case QETH_CARD_TYPE_IQD:
2847 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2848 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2849 card->info.mcl_level[0]];
2850 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2851 card->info.mcl_level[1]];
2852 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2853 card->info.mcl_level[2]];
2854 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2855 card->info.mcl_level[3]];
2856 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2860 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2862 dev_info(&card->gdev->dev,
2863 "Device is a%s card%s%s%s\nwith link type %s.\n",
2864 qeth_get_cardname(card),
2865 (card->info.mcl_level[0]) ? " (level: " : "",
2866 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2867 (card->info.mcl_level[0]) ? ")" : "",
2868 qeth_get_cardname_short(card));
2871 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2873 struct qeth_buffer_pool_entry *entry;
2875 QETH_CARD_TEXT(card, 5, "inwrklst");
2877 list_for_each_entry(entry,
2878 &card->qdio.init_pool.entry_list, init_list) {
2879 qeth_put_buffer_pool_entry(card, entry);
2883 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2884 struct qeth_card *card)
2886 struct qeth_buffer_pool_entry *entry;
2889 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2892 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
2894 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2895 if (page_count(entry->elements[i]) > 1) {
2901 list_del_init(&entry->list);
2906 /* no free buffer in pool so take first one and swap pages */
2907 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2908 struct qeth_buffer_pool_entry, list);
2909 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2910 if (page_count(entry->elements[i]) > 1) {
2911 struct page *page = dev_alloc_page();
2916 __free_page(entry->elements[i]);
2917 entry->elements[i] = page;
2918 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2921 list_del_init(&entry->list);
2925 static int qeth_init_input_buffer(struct qeth_card *card,
2926 struct qeth_qdio_buffer *buf)
2928 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
2931 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2932 buf->rx_skb = netdev_alloc_skb(card->dev,
2934 sizeof(struct ipv6hdr));
2940 pool_entry = qeth_find_free_buffer_pool_entry(card);
2944 buf->pool_entry = pool_entry;
2948 * since the buffer is accessed only from the input_tasklet
2949 * there shouldn't be a need to synchronize; also, since we use
2950 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2953 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2954 buf->buffer->element[i].length = PAGE_SIZE;
2955 buf->buffer->element[i].addr =
2956 page_to_phys(pool_entry->elements[i]);
2957 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2958 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2960 buf->buffer->element[i].eflags = 0;
2961 buf->buffer->element[i].sflags = 0;
2966 static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2967 struct qeth_qdio_out_q *queue)
2969 if (!IS_IQD(card) ||
2970 qeth_iqd_is_mcast_queue(card, queue) ||
2971 card->options.cq == QETH_CQ_ENABLED ||
2972 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2975 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2978 static int qeth_init_qdio_queues(struct qeth_card *card)
2980 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
2984 QETH_CARD_TEXT(card, 2, "initqdqs");
2987 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2988 memset(&card->rx, 0, sizeof(struct qeth_rx));
2990 qeth_initialize_working_pool_list(card);
2991 /*give only as many buffers to hardware as we have buffer pool entries*/
2992 for (i = 0; i < rx_bufs; i++) {
2993 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2998 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
2999 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 0, rx_bufs);
3001 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
3006 rc = qeth_cq_init(card);
3011 /* outbound queue */
3012 for (i = 0; i < card->qdio.no_out_queues; ++i) {
3013 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
3015 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
3016 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3017 queue->next_buf_to_fill = 0;
3019 queue->prev_hdr = NULL;
3020 queue->coalesced_frames = 0;
3021 queue->bulk_start = 0;
3022 queue->bulk_count = 0;
3023 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
3024 atomic_set(&queue->used_buffers, 0);
3025 atomic_set(&queue->set_pci_flags_count, 0);
3026 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
3031 static void qeth_ipa_finalize_cmd(struct qeth_card *card,
3032 struct qeth_cmd_buffer *iob)
3034 qeth_mpc_finalize_cmd(card, iob);
3036 /* override with IPA-specific values: */
3037 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
3040 static void qeth_prepare_ipa_cmd(struct qeth_card *card,
3041 struct qeth_cmd_buffer *iob, u16 cmd_length)
3043 u8 prot_type = qeth_mpc_select_prot_type(card);
3044 u16 total_length = iob->length;
3046 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
3048 iob->finalize = qeth_ipa_finalize_cmd;
3050 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3051 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
3052 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
3053 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
3054 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
3055 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3056 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3057 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
3060 static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
3061 struct qeth_cmd_buffer *reply)
3063 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
3065 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
3068 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
3069 enum qeth_ipa_cmds cmd_code,
3070 enum qeth_prot_versions prot,
3071 unsigned int data_length)
3073 struct qeth_cmd_buffer *iob;
3074 struct qeth_ipacmd_hdr *hdr;
3076 data_length += offsetof(struct qeth_ipa_cmd, data);
3077 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3082 qeth_prepare_ipa_cmd(card, iob, data_length);
3083 iob->match = qeth_ipa_match_reply;
3085 hdr = &__ipa_cmd(iob)->hdr;
3086 hdr->command = cmd_code;
3087 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3088 /* hdr->seqno is set by qeth_send_control_data() */
3089 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
3090 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3091 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3092 hdr->param_count = 1;
3093 hdr->prot_version = prot;
3096 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3098 static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3099 struct qeth_reply *reply, unsigned long data)
3101 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3103 return (cmd->hdr.return_code) ? -EIO : 0;
3107 * qeth_send_ipa_cmd() - send an IPA command
3109 * See qeth_send_control_data() for explanation of the arguments.
3112 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3113 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3119 QETH_CARD_TEXT(card, 4, "sendipa");
3121 if (card->read_or_write_problem) {
3126 if (reply_cb == NULL)
3127 reply_cb = qeth_send_ipa_cmd_cb;
3128 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
3130 qeth_clear_ipacmd_list(card);
3131 qeth_schedule_recovery(card);
3135 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3137 static int qeth_send_startlan_cb(struct qeth_card *card,
3138 struct qeth_reply *reply, unsigned long data)
3140 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3142 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3145 return (cmd->hdr.return_code) ? -EIO : 0;
3148 static int qeth_send_startlan(struct qeth_card *card)
3150 struct qeth_cmd_buffer *iob;
3152 QETH_CARD_TEXT(card, 2, "strtlan");
3154 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
3157 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
3160 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3162 if (!cmd->hdr.return_code)
3163 cmd->hdr.return_code =
3164 cmd->data.setadapterparms.hdr.return_code;
3165 return cmd->hdr.return_code;
3168 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3169 struct qeth_reply *reply, unsigned long data)
3171 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3172 struct qeth_query_cmds_supp *query_cmd;
3174 QETH_CARD_TEXT(card, 3, "quyadpcb");
3175 if (qeth_setadpparms_inspect_rc(cmd))
3178 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3179 if (query_cmd->lan_type & 0x7f) {
3180 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3181 return -EPROTONOSUPPORT;
3183 card->info.link_type = query_cmd->lan_type;
3184 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
3187 card->options.adp.supported = query_cmd->supported_cmds;
3191 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3192 enum qeth_ipa_setadp_cmd adp_cmd,
3193 unsigned int data_length)
3195 struct qeth_ipacmd_setadpparms_hdr *hdr;
3196 struct qeth_cmd_buffer *iob;
3198 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3200 offsetof(struct qeth_ipacmd_setadpparms,
3205 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3206 hdr->cmdlength = sizeof(*hdr) + data_length;
3207 hdr->command_code = adp_cmd;
3208 hdr->used_total = 1;
3213 static int qeth_query_setadapterparms(struct qeth_card *card)
3216 struct qeth_cmd_buffer *iob;
3218 QETH_CARD_TEXT(card, 3, "queryadp");
3219 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3220 SETADP_DATA_SIZEOF(query_cmds_supp));
3223 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3227 static int qeth_query_ipassists_cb(struct qeth_card *card,
3228 struct qeth_reply *reply, unsigned long data)
3230 struct qeth_ipa_cmd *cmd;
3232 QETH_CARD_TEXT(card, 2, "qipasscb");
3234 cmd = (struct qeth_ipa_cmd *) data;
3236 switch (cmd->hdr.return_code) {
3237 case IPA_RC_SUCCESS:
3239 case IPA_RC_NOTSUPP:
3240 case IPA_RC_L2_UNSUPPORTED_CMD:
3241 QETH_CARD_TEXT(card, 2, "ipaunsup");
3242 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3243 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
3246 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3247 CARD_DEVID(card), cmd->hdr.return_code);
3251 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3252 card->options.ipa4 = cmd->hdr.assists;
3253 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3254 card->options.ipa6 = cmd->hdr.assists;
3256 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3261 static int qeth_query_ipassists(struct qeth_card *card,
3262 enum qeth_prot_versions prot)
3265 struct qeth_cmd_buffer *iob;
3267 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
3268 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
3271 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3275 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3276 struct qeth_reply *reply, unsigned long data)
3278 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3279 struct qeth_query_switch_attributes *attrs;
3280 struct qeth_switch_info *sw_info;
3282 QETH_CARD_TEXT(card, 2, "qswiatcb");
3283 if (qeth_setadpparms_inspect_rc(cmd))
3286 sw_info = (struct qeth_switch_info *)reply->param;
3287 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3288 sw_info->capabilities = attrs->capabilities;
3289 sw_info->settings = attrs->settings;
3290 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3295 int qeth_query_switch_attributes(struct qeth_card *card,
3296 struct qeth_switch_info *sw_info)
3298 struct qeth_cmd_buffer *iob;
3300 QETH_CARD_TEXT(card, 2, "qswiattr");
3301 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3303 if (!netif_carrier_ok(card->dev))
3305 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
3308 return qeth_send_ipa_cmd(card, iob,
3309 qeth_query_switch_attributes_cb, sw_info);
3312 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3313 enum qeth_diags_cmds sub_cmd,
3314 unsigned int data_length)
3316 struct qeth_ipacmd_diagass *cmd;
3317 struct qeth_cmd_buffer *iob;
3319 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3320 DIAG_HDR_LEN + data_length);
3324 cmd = &__ipa_cmd(iob)->data.diagass;
3325 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3326 cmd->subcmd = sub_cmd;
3329 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3331 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3332 struct qeth_reply *reply, unsigned long data)
3334 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3335 u16 rc = cmd->hdr.return_code;
3338 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3342 card->info.diagass_support = cmd->data.diagass.ext;
3346 static int qeth_query_setdiagass(struct qeth_card *card)
3348 struct qeth_cmd_buffer *iob;
3350 QETH_CARD_TEXT(card, 2, "qdiagass");
3351 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3354 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3357 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3359 unsigned long info = get_zeroed_page(GFP_KERNEL);
3360 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3361 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3362 struct ccw_dev_id ccwid;
3365 tid->chpid = card->info.chpid;
3366 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3367 tid->ssid = ccwid.ssid;
3368 tid->devno = ccwid.devno;
3371 level = stsi(NULL, 0, 0, 0);
3372 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3373 tid->lparnr = info222->lpar_number;
3374 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3375 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3376 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3381 static int qeth_hw_trap_cb(struct qeth_card *card,
3382 struct qeth_reply *reply, unsigned long data)
3384 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3385 u16 rc = cmd->hdr.return_code;
3388 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3394 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3396 struct qeth_cmd_buffer *iob;
3397 struct qeth_ipa_cmd *cmd;
3399 QETH_CARD_TEXT(card, 2, "diagtrap");
3400 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3403 cmd = __ipa_cmd(iob);
3404 cmd->data.diagass.type = 1;
3405 cmd->data.diagass.action = action;
3407 case QETH_DIAGS_TRAP_ARM:
3408 cmd->data.diagass.options = 0x0003;
3409 cmd->data.diagass.ext = 0x00010000 +
3410 sizeof(struct qeth_trap_id);
3411 qeth_get_trap_id(card,
3412 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3414 case QETH_DIAGS_TRAP_DISARM:
3415 cmd->data.diagass.options = 0x0001;
3417 case QETH_DIAGS_TRAP_CAPTURE:
3420 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3423 static int qeth_check_qdio_errors(struct qeth_card *card,
3424 struct qdio_buffer *buf,
3425 unsigned int qdio_error,
3426 const char *dbftext)
3429 QETH_CARD_TEXT(card, 2, dbftext);
3430 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3431 buf->element[15].sflags);
3432 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3433 buf->element[14].sflags);
3434 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3435 if ((buf->element[15].sflags) == 0x12) {
3436 QETH_CARD_STAT_INC(card, rx_fifo_errors);
3444 static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3447 struct qeth_qdio_q *queue = card->qdio.in_q;
3448 struct list_head *lh;
3453 /* only requeue at a certain threshold to avoid SIGAs */
3454 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3455 for (i = queue->next_buf_to_init;
3456 i < queue->next_buf_to_init + count; ++i) {
3457 if (qeth_init_input_buffer(card,
3458 &queue->bufs[QDIO_BUFNR(i)])) {
3465 if (newcount < count) {
3466 /* we are in memory shortage so we switch back to
3467 traditional skb allocation and drop packages */
3468 atomic_set(&card->force_alloc_skb, 3);
3471 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3476 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3478 if (i == card->qdio.in_buf_pool.buf_count) {
3479 QETH_CARD_TEXT(card, 2, "qsarbw");
3480 schedule_delayed_work(
3481 &card->buffer_reclaim_work,
3482 QETH_RECLAIM_WORK_TIME);
3487 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0,
3488 queue->next_buf_to_init,
3491 QETH_CARD_TEXT(card, 2, "qinberr");
3493 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3501 static void qeth_buffer_reclaim_work(struct work_struct *work)
3503 struct qeth_card *card = container_of(to_delayed_work(work),
3505 buffer_reclaim_work);
3508 napi_schedule(&card->napi);
3509 /* kick-start the NAPI softirq: */
3513 static void qeth_handle_send_error(struct qeth_card *card,
3514 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3516 int sbalf15 = buffer->buffer->element[15].sflags;
3518 QETH_CARD_TEXT(card, 6, "hdsnderr");
3519 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3524 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3527 QETH_CARD_TEXT(card, 1, "lnkfail");
3528 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3529 (u16)qdio_err, (u8)sbalf15);
3533 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3534 * @queue: queue to check for packing buffer
3536 * Returns number of buffers that were prepared for flush.
3538 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3540 struct qeth_qdio_out_buffer *buffer;
3542 buffer = queue->bufs[queue->next_buf_to_fill];
3543 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3544 (buffer->next_element_to_fill > 0)) {
3545 /* it's a packing buffer */
3546 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3547 queue->next_buf_to_fill =
3548 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3555 * Switched to packing state if the number of used buffers on a queue
3556 * reaches a certain limit.
3558 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3560 if (!queue->do_pack) {
3561 if (atomic_read(&queue->used_buffers)
3562 >= QETH_HIGH_WATERMARK_PACK){
3563 /* switch non-PACKING -> PACKING */
3564 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3565 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3572 * Switches from packing to non-packing mode. If there is a packing
3573 * buffer on the queue this buffer will be prepared to be flushed.
3574 * In that case 1 is returned to inform the caller. If no buffer
3575 * has to be flushed, zero is returned.
3577 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3579 if (queue->do_pack) {
3580 if (atomic_read(&queue->used_buffers)
3581 <= QETH_LOW_WATERMARK_PACK) {
3582 /* switch PACKING -> non-PACKING */
3583 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3584 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3586 return qeth_prep_flush_pack_buffer(queue);
3592 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3595 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
3596 struct qeth_card *card = queue->card;
3597 unsigned int frames, usecs;
3598 struct qaob *aob = NULL;
3602 for (i = index; i < index + count; ++i) {
3603 unsigned int bidx = QDIO_BUFNR(i);
3604 struct sk_buff *skb;
3606 buf = queue->bufs[bidx];
3607 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3608 SBAL_EFLAGS_LAST_ENTRY;
3609 queue->coalesced_frames += buf->frames;
3612 skb_queue_walk(&buf->skb_list, skb)
3613 skb_tx_timestamp(skb);
3618 if (card->options.cq == QETH_CQ_ENABLED &&
3619 !qeth_iqd_is_mcast_queue(card, queue) &&
3622 buf->aob = kmem_cache_zalloc(qeth_qaob_cache,
3625 struct qeth_qaob_priv1 *priv;
3628 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3629 priv->state = QETH_QAOB_ISSUED;
3630 priv->queue_no = queue->queue_no;
3634 if (!queue->do_pack) {
3635 if ((atomic_read(&queue->used_buffers) >=
3636 (QETH_HIGH_WATERMARK_PACK -
3637 QETH_WATERMARK_PACK_FUZZ)) &&
3638 !atomic_read(&queue->set_pci_flags_count)) {
3639 /* it's likely that we'll go to packing
3641 atomic_inc(&queue->set_pci_flags_count);
3642 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3645 if (!atomic_read(&queue->set_pci_flags_count)) {
3647 * there's no outstanding PCI any more, so we
3648 * have to request a PCI to be sure the PCI
3649 * will wake at some time in the future then we
3650 * can flush packed buffers that might still be
3651 * hanging around, which can happen if no
3652 * further send was requested by the stack
3654 atomic_inc(&queue->set_pci_flags_count);
3655 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3660 QETH_TXQ_STAT_INC(queue, doorbell);
3661 rc = qdio_add_bufs_to_output_queue(CARD_DDEV(card), queue->queue_no,
3667 /* ignore temporary SIGA errors without busy condition */
3669 /* Fake the TX completion interrupt: */
3670 frames = READ_ONCE(queue->max_coalesced_frames);
3671 usecs = READ_ONCE(queue->coalesce_usecs);
3673 if (frames && queue->coalesced_frames >= frames) {
3674 napi_schedule(&queue->napi);
3675 queue->coalesced_frames = 0;
3676 QETH_TXQ_STAT_INC(queue, coal_frames);
3677 } else if (qeth_use_tx_irqs(card) &&
3678 atomic_read(&queue->used_buffers) >= 32) {
3679 /* Old behaviour carried over from the qdio layer: */
3680 napi_schedule(&queue->napi);
3681 QETH_TXQ_STAT_INC(queue, coal_frames);
3683 qeth_tx_arm_timer(queue, usecs);
3688 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3689 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3690 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3691 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3692 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3694 /* this must not happen under normal circumstances. if it
3695 * happens something is really wrong -> recover */
3696 qeth_schedule_recovery(queue->card);
3700 static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3702 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
3704 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
3705 queue->prev_hdr = NULL;
3706 queue->bulk_count = 0;
3709 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3712 * check if we have to switch to non-packing mode or if
3713 * we have to get a pci flag out on the queue
3715 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3716 !atomic_read(&queue->set_pci_flags_count)) {
3717 unsigned int index, flush_cnt;
3719 spin_lock(&queue->lock);
3721 index = queue->next_buf_to_fill;
3723 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3724 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3725 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3728 qeth_flush_buffers(queue, index, flush_cnt);
3729 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3732 spin_unlock(&queue->lock);
3736 static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
3738 struct qeth_card *card = (struct qeth_card *)card_ptr;
3740 napi_schedule_irqoff(&card->napi);
3743 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3747 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3751 if (card->options.cq == cq) {
3756 qeth_free_qdio_queues(card);
3757 card->options.cq = cq;
3764 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3766 static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3768 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3769 unsigned int queue_no = priv->queue_no;
3771 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3773 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3774 queue_no < card->qdio.no_out_queues)
3775 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3778 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3779 unsigned int queue, int first_element,
3782 struct qeth_qdio_q *cq = card->qdio.c_q;
3786 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3787 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3788 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3791 netif_tx_stop_all_queues(card->dev);
3792 qeth_schedule_recovery(card);
3796 for (i = first_element; i < first_element + count; ++i) {
3797 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3800 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3801 buffer->element[e].addr) {
3802 unsigned long phys_aob_addr = buffer->element[e].addr;
3804 qeth_qdio_handle_aob(card, phys_to_virt(phys_aob_addr));
3807 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3809 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), queue,
3810 cq->next_buf_to_init, count);
3812 dev_warn(&card->gdev->dev,
3813 "QDIO reported an error, rc=%i\n", rc);
3814 QETH_CARD_TEXT(card, 2, "qcqherr");
3817 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
3820 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3821 unsigned int qdio_err, int queue,
3822 int first_elem, int count,
3823 unsigned long card_ptr)
3825 struct qeth_card *card = (struct qeth_card *)card_ptr;
3827 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3828 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3831 qeth_schedule_recovery(card);
3834 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3835 unsigned int qdio_error, int __queue,
3836 int first_element, int count,
3837 unsigned long card_ptr)
3839 struct qeth_card *card = (struct qeth_card *) card_ptr;
3841 QETH_CARD_TEXT(card, 2, "achkcond");
3842 netif_tx_stop_all_queues(card->dev);
3843 qeth_schedule_recovery(card);
3847 * Note: Function assumes that we have 4 outbound queues.
3849 static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3851 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3854 switch (card->qdio.do_prio_queueing) {
3855 case QETH_PRIO_Q_ING_TOS:
3856 case QETH_PRIO_Q_ING_PREC:
3857 switch (vlan_get_protocol(skb)) {
3858 case htons(ETH_P_IP):
3859 tos = ipv4_get_dsfield(ip_hdr(skb));
3861 case htons(ETH_P_IPV6):
3862 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3865 return card->qdio.default_out_queue;
3867 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3868 return ~tos >> 6 & 3;
3869 if (tos & IPTOS_MINCOST)
3871 if (tos & IPTOS_RELIABILITY)
3873 if (tos & IPTOS_THROUGHPUT)
3875 if (tos & IPTOS_LOWDELAY)
3878 case QETH_PRIO_Q_ING_SKB:
3879 if (skb->priority > 5)
3881 return ~skb->priority >> 1 & 3;
3882 case QETH_PRIO_Q_ING_VLAN:
3883 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3884 return ~ntohs(veth->h_vlan_TCI) >>
3885 (VLAN_PRIO_SHIFT + 1) & 3;
3887 case QETH_PRIO_Q_ING_FIXED:
3888 return card->qdio.default_out_queue;
3892 return card->qdio.default_out_queue;
3896 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3899 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3900 * fragmented part of the SKB. Returns zero for linear SKB.
3902 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3904 int cnt, elements = 0;
3906 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3907 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3909 elements += qeth_get_elements_for_range(
3910 (addr_t)skb_frag_address(frag),
3911 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3917 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3918 * to transmit an skb.
3919 * @skb: the skb to operate on.
3920 * @data_offset: skip this part of the skb's linear data
3922 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3923 * skb's data (both its linear part and paged fragments).
3925 static unsigned int qeth_count_elements(struct sk_buff *skb,
3926 unsigned int data_offset)
3928 unsigned int elements = qeth_get_elements_for_frags(skb);
3929 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3930 addr_t start = (addr_t)skb->data + data_offset;
3933 elements += qeth_get_elements_for_range(start, end);
3937 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3941 * qeth_add_hw_header() - add a HW header to an skb.
3942 * @queue: TX queue that the skb will be placed on.
3943 * @skb: skb that the HW header should be added to.
3944 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3945 * it contains a valid pointer to a qeth_hdr.
3946 * @hdr_len: length of the HW header.
3947 * @proto_len: length of protocol headers that need to be in same page as the
3949 * @elements: returns the required number of buffer elements for this skb.
3951 * Returns the pushed length. If the header can't be pushed on
3952 * (eg. because it would cross a page boundary), it is allocated from
3953 * the cache instead and 0 is returned.
3954 * The number of needed buffer elements is returned in @elements.
3955 * Error to create the hdr is indicated by returning with < 0.
3957 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3958 struct sk_buff *skb, struct qeth_hdr **hdr,
3959 unsigned int hdr_len, unsigned int proto_len,
3960 unsigned int *elements)
3962 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
3963 const unsigned int contiguous = proto_len ? proto_len : 1;
3964 const unsigned int max_elements = queue->max_elements;
3965 unsigned int __elements;
3971 start = (addr_t)skb->data - hdr_len;
3972 end = (addr_t)skb->data;
3974 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3975 /* Push HW header into same page as first protocol header. */
3977 /* ... but TSO always needs a separate element for headers: */
3978 if (skb_is_gso(skb))
3979 __elements = 1 + qeth_count_elements(skb, proto_len);
3981 __elements = qeth_count_elements(skb, 0);
3982 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3983 /* Push HW header into preceding page, flush with skb->data. */
3985 __elements = 1 + qeth_count_elements(skb, 0);
3987 /* Use header cache, copy protocol headers up. */
3989 __elements = 1 + qeth_count_elements(skb, proto_len);
3992 /* Compress skb to fit into one IO buffer: */
3993 if (__elements > max_elements) {
3994 if (!skb_is_nonlinear(skb)) {
3995 /* Drop it, no easy way of shrinking it further. */
3996 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3997 max_elements, __elements, skb->len);
4001 rc = skb_linearize(skb);
4003 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
4007 QETH_TXQ_STAT_INC(queue, skbs_linearized);
4008 /* Linearization changed the layout, re-evaluate: */
4012 *elements = __elements;
4013 /* Add the header: */
4015 *hdr = skb_push(skb, hdr_len);
4019 /* Fall back to cache element with known-good alignment: */
4020 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
4022 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
4025 /* Copy protocol headers behind HW header: */
4026 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
4030 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
4031 struct sk_buff *curr_skb,
4032 struct qeth_hdr *curr_hdr)
4034 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
4035 struct qeth_hdr *prev_hdr = queue->prev_hdr;
4040 /* All packets must have the same target: */
4041 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
4042 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
4044 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
4045 eth_hdr(curr_skb)->h_dest) &&
4046 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
4049 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
4050 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
4054 * qeth_fill_buffer() - map skb into an output buffer
4055 * @buf: buffer to transport the skb
4056 * @skb: skb to map into the buffer
4057 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4058 * from qeth_core_header_cache.
4059 * @offset: when mapping the skb, start at skb->data + offset
4060 * @hd_len: if > 0, build a dedicated header element of this size
4062 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
4063 struct sk_buff *skb, struct qeth_hdr *hdr,
4064 unsigned int offset, unsigned int hd_len)
4066 struct qdio_buffer *buffer = buf->buffer;
4067 int element = buf->next_element_to_fill;
4068 int length = skb_headlen(skb) - offset;
4069 char *data = skb->data + offset;
4070 unsigned int elem_length, cnt;
4071 bool is_first_elem = true;
4073 __skb_queue_tail(&buf->skb_list, skb);
4075 /* build dedicated element for HW Header */
4077 is_first_elem = false;
4079 buffer->element[element].addr = virt_to_phys(hdr);
4080 buffer->element[element].length = hd_len;
4081 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4083 /* HW header is allocated from cache: */
4084 if ((void *)hdr != skb->data)
4085 __set_bit(element, buf->from_kmem_cache);
4086 /* HW header was pushed and is contiguous with linear part: */
4087 else if (length > 0 && !PAGE_ALIGNED(data) &&
4088 (data == (char *)hdr + hd_len))
4089 buffer->element[element].eflags |=
4090 SBAL_EFLAGS_CONTIGUOUS;
4095 /* map linear part into buffer element(s) */
4096 while (length > 0) {
4097 elem_length = min_t(unsigned int, length,
4098 PAGE_SIZE - offset_in_page(data));
4100 buffer->element[element].addr = virt_to_phys(data);
4101 buffer->element[element].length = elem_length;
4102 length -= elem_length;
4103 if (is_first_elem) {
4104 is_first_elem = false;
4105 if (length || skb_is_nonlinear(skb))
4106 /* skb needs additional elements */
4107 buffer->element[element].eflags =
4108 SBAL_EFLAGS_FIRST_FRAG;
4110 buffer->element[element].eflags = 0;
4112 buffer->element[element].eflags =
4113 SBAL_EFLAGS_MIDDLE_FRAG;
4116 data += elem_length;
4120 /* map page frags into buffer element(s) */
4121 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4122 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4124 data = skb_frag_address(frag);
4125 length = skb_frag_size(frag);
4126 while (length > 0) {
4127 elem_length = min_t(unsigned int, length,
4128 PAGE_SIZE - offset_in_page(data));
4130 buffer->element[element].addr = virt_to_phys(data);
4131 buffer->element[element].length = elem_length;
4132 buffer->element[element].eflags =
4133 SBAL_EFLAGS_MIDDLE_FRAG;
4135 length -= elem_length;
4136 data += elem_length;
4141 if (buffer->element[element - 1].eflags)
4142 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4143 buf->next_element_to_fill = element;
4147 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4148 struct sk_buff *skb, unsigned int elements,
4149 struct qeth_hdr *hdr, unsigned int offset,
4150 unsigned int hd_len)
4152 unsigned int bytes = qdisc_pkt_len(skb);
4153 struct qeth_qdio_out_buffer *buffer;
4154 unsigned int next_element;
4155 struct netdev_queue *txq;
4156 bool stopped = false;
4159 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
4160 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4162 /* Just a sanity check, the wake/stop logic should ensure that we always
4163 * get a free buffer.
4165 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4168 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4171 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4172 if (buffer->next_element_to_fill > 0) {
4173 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4174 queue->bulk_count++;
4177 if (queue->bulk_count >= queue->bulk_max)
4181 qeth_flush_queue(queue);
4183 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4184 queue->bulk_count)];
4186 /* Sanity-check again: */
4187 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4191 if (buffer->next_element_to_fill == 0 &&
4192 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4193 /* If a TX completion happens right _here_ and misses to wake
4194 * the txq, then our re-check below will catch the race.
4196 QETH_TXQ_STAT_INC(queue, stopped);
4197 netif_tx_stop_queue(txq);
4201 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4202 buffer->bytes += bytes;
4203 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4204 queue->prev_hdr = hdr;
4206 flush = __netdev_tx_sent_queue(txq, bytes,
4207 !stopped && netdev_xmit_more());
4209 if (flush || next_element >= queue->max_elements) {
4210 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4211 queue->bulk_count++;
4213 if (queue->bulk_count >= queue->bulk_max)
4217 qeth_flush_queue(queue);
4220 if (stopped && !qeth_out_queue_is_full(queue))
4221 netif_tx_start_queue(txq);
4225 static int qeth_do_send_packet(struct qeth_card *card,
4226 struct qeth_qdio_out_q *queue,
4227 struct sk_buff *skb, struct qeth_hdr *hdr,
4228 unsigned int offset, unsigned int hd_len,
4229 unsigned int elements_needed)
4231 unsigned int start_index = queue->next_buf_to_fill;
4232 struct qeth_qdio_out_buffer *buffer;
4233 unsigned int next_element;
4234 struct netdev_queue *txq;
4235 bool stopped = false;
4236 int flush_count = 0;
4240 buffer = queue->bufs[queue->next_buf_to_fill];
4242 /* Just a sanity check, the wake/stop logic should ensure that we always
4243 * get a free buffer.
4245 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4248 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4250 /* check if we need to switch packing state of this queue */
4251 qeth_switch_to_packing_if_needed(queue);
4252 if (queue->do_pack) {
4254 /* does packet fit in current buffer? */
4255 if (buffer->next_element_to_fill + elements_needed >
4256 queue->max_elements) {
4257 /* ... no -> set state PRIMED */
4258 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4260 queue->next_buf_to_fill =
4261 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4262 buffer = queue->bufs[queue->next_buf_to_fill];
4264 /* We stepped forward, so sanity-check again: */
4265 if (atomic_read(&buffer->state) !=
4266 QETH_QDIO_BUF_EMPTY) {
4267 qeth_flush_buffers(queue, start_index,
4275 if (buffer->next_element_to_fill == 0 &&
4276 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4277 /* If a TX completion happens right _here_ and misses to wake
4278 * the txq, then our re-check below will catch the race.
4280 QETH_TXQ_STAT_INC(queue, stopped);
4281 netif_tx_stop_queue(txq);
4285 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4286 buffer->bytes += qdisc_pkt_len(skb);
4287 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4290 QETH_TXQ_STAT_INC(queue, skbs_pack);
4291 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4293 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4294 queue->next_buf_to_fill =
4295 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4299 qeth_flush_buffers(queue, start_index, flush_count);
4303 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4305 if (stopped && !qeth_out_queue_is_full(queue))
4306 netif_tx_start_queue(txq);
4310 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4311 unsigned int payload_len, struct sk_buff *skb,
4312 unsigned int proto_len)
4314 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4316 ext->hdr_tot_len = sizeof(*ext);
4317 ext->imb_hdr_no = 1;
4319 ext->hdr_version = 1;
4321 ext->payload_len = payload_len;
4322 ext->mss = skb_shinfo(skb)->gso_size;
4323 ext->dg_hdr_len = proto_len;
4326 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4327 struct qeth_qdio_out_q *queue, __be16 proto,
4328 void (*fill_header)(struct qeth_qdio_out_q *queue,
4329 struct qeth_hdr *hdr, struct sk_buff *skb,
4330 __be16 proto, unsigned int data_len))
4332 unsigned int proto_len, hw_hdr_len;
4333 unsigned int frame_len = skb->len;
4334 bool is_tso = skb_is_gso(skb);
4335 unsigned int data_offset = 0;
4336 struct qeth_hdr *hdr = NULL;
4337 unsigned int hd_len = 0;
4338 unsigned int elements;
4342 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4343 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4345 hw_hdr_len = sizeof(struct qeth_hdr);
4346 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4349 rc = skb_cow_head(skb, hw_hdr_len);
4353 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4357 if (is_tso || !push_len) {
4358 /* HW header needs its own buffer element. */
4359 hd_len = hw_hdr_len + proto_len;
4360 data_offset = push_len + proto_len;
4362 memset(hdr, 0, hw_hdr_len);
4363 fill_header(queue, hdr, skb, proto, frame_len);
4365 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4366 frame_len - proto_len, skb, proto_len);
4369 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4372 /* TODO: drop skb_orphan() once TX completion is fast enough */
4374 spin_lock(&queue->lock);
4375 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4377 spin_unlock(&queue->lock);
4380 if (rc && !push_len)
4381 kmem_cache_free(qeth_core_header_cache, hdr);
4385 EXPORT_SYMBOL_GPL(qeth_xmit);
4387 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4388 struct qeth_reply *reply, unsigned long data)
4390 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4391 struct qeth_ipacmd_setadpparms *setparms;
4393 QETH_CARD_TEXT(card, 4, "prmadpcb");
4395 setparms = &(cmd->data.setadapterparms);
4396 if (qeth_setadpparms_inspect_rc(cmd)) {
4397 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4398 setparms->data.mode = SET_PROMISC_MODE_OFF;
4400 card->info.promisc_mode = setparms->data.mode;
4401 return (cmd->hdr.return_code) ? -EIO : 0;
4404 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4406 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4407 SET_PROMISC_MODE_OFF;
4408 struct qeth_cmd_buffer *iob;
4409 struct qeth_ipa_cmd *cmd;
4411 QETH_CARD_TEXT(card, 4, "setprom");
4412 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4414 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4415 SETADP_DATA_SIZEOF(mode));
4418 cmd = __ipa_cmd(iob);
4419 cmd->data.setadapterparms.data.mode = mode;
4420 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4422 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4424 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4425 struct qeth_reply *reply, unsigned long data)
4427 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4428 struct qeth_ipacmd_setadpparms *adp_cmd;
4430 QETH_CARD_TEXT(card, 4, "chgmaccb");
4431 if (qeth_setadpparms_inspect_rc(cmd))
4434 adp_cmd = &cmd->data.setadapterparms;
4435 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4436 return -EADDRNOTAVAIL;
4438 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4439 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4440 return -EADDRNOTAVAIL;
4442 eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr);
4446 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4449 struct qeth_cmd_buffer *iob;
4450 struct qeth_ipa_cmd *cmd;
4452 QETH_CARD_TEXT(card, 4, "chgmac");
4454 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4455 SETADP_DATA_SIZEOF(change_addr));
4458 cmd = __ipa_cmd(iob);
4459 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4460 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4461 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4462 card->dev->dev_addr);
4463 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4467 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4469 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4470 struct qeth_reply *reply, unsigned long data)
4472 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4473 struct qeth_set_access_ctrl *access_ctrl_req;
4475 QETH_CARD_TEXT(card, 4, "setaccb");
4477 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4478 QETH_CARD_TEXT_(card, 2, "rc=%d",
4479 cmd->data.setadapterparms.hdr.return_code);
4480 if (cmd->data.setadapterparms.hdr.return_code !=
4481 SET_ACCESS_CTRL_RC_SUCCESS)
4482 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4483 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4484 cmd->data.setadapterparms.hdr.return_code);
4485 switch (qeth_setadpparms_inspect_rc(cmd)) {
4486 case SET_ACCESS_CTRL_RC_SUCCESS:
4487 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
4488 dev_info(&card->gdev->dev,
4489 "QDIO data connection isolation is deactivated\n");
4491 dev_info(&card->gdev->dev,
4492 "QDIO data connection isolation is activated\n");
4494 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4495 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4498 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4499 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4502 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4503 dev_err(&card->gdev->dev, "Adapter does not "
4504 "support QDIO data connection isolation\n");
4506 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4507 dev_err(&card->gdev->dev,
4508 "Adapter is dedicated. "
4509 "QDIO data connection isolation not supported\n");
4511 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4512 dev_err(&card->gdev->dev,
4513 "TSO does not permit QDIO data connection isolation\n");
4515 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4516 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4517 "support reflective relay mode\n");
4519 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4520 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4521 "enabled at the adjacent switch port");
4523 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4524 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4525 "at the adjacent switch failed\n");
4526 /* benign error while disabling ISOLATION_MODE_FWD */
4533 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4534 enum qeth_ipa_isolation_modes mode)
4537 struct qeth_cmd_buffer *iob;
4538 struct qeth_ipa_cmd *cmd;
4539 struct qeth_set_access_ctrl *access_ctrl_req;
4541 QETH_CARD_TEXT(card, 4, "setacctl");
4543 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4544 dev_err(&card->gdev->dev,
4545 "Adapter does not support QDIO data connection isolation\n");
4549 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4550 SETADP_DATA_SIZEOF(set_access_ctrl));
4553 cmd = __ipa_cmd(iob);
4554 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4555 access_ctrl_req->subcmd_code = mode;
4557 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4560 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4561 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4562 rc, CARD_DEVID(card));
4568 void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4570 struct qeth_card *card;
4572 card = dev->ml_priv;
4573 QETH_CARD_TEXT(card, 4, "txtimeo");
4574 qeth_schedule_recovery(card);
4576 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4578 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4580 struct qeth_card *card = dev->ml_priv;
4584 case MII_BMCR: /* Basic mode control register */
4586 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4587 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4588 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4589 rc |= BMCR_SPEED100;
4591 case MII_BMSR: /* Basic mode status register */
4592 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4593 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4596 case MII_PHYSID1: /* PHYS ID 1 */
4597 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4599 rc = (rc >> 5) & 0xFFFF;
4601 case MII_PHYSID2: /* PHYS ID 2 */
4602 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4604 case MII_ADVERTISE: /* Advertisement control reg */
4607 case MII_LPA: /* Link partner ability reg */
4608 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4609 LPA_100BASE4 | LPA_LPACK;
4611 case MII_EXPANSION: /* Expansion register */
4613 case MII_DCOUNTER: /* disconnect counter */
4615 case MII_FCSCOUNTER: /* false carrier counter */
4617 case MII_NWAYTEST: /* N-way auto-neg test register */
4619 case MII_RERRCOUNTER: /* rx error counter */
4620 rc = card->stats.rx_length_errors +
4621 card->stats.rx_frame_errors +
4622 card->stats.rx_fifo_errors;
4624 case MII_SREVISION: /* silicon revision */
4626 case MII_RESV1: /* reserved 1 */
4628 case MII_LBRERROR: /* loopback, rx, bypass error */
4630 case MII_PHYADDR: /* physical address */
4632 case MII_RESV2: /* reserved 2 */
4634 case MII_TPISTATUS: /* TPI status for 10mbps */
4636 case MII_NCONFIG: /* network interface config */
4644 static int qeth_snmp_command_cb(struct qeth_card *card,
4645 struct qeth_reply *reply, unsigned long data)
4647 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4648 struct qeth_arp_query_info *qinfo = reply->param;
4649 struct qeth_ipacmd_setadpparms *adp_cmd;
4650 unsigned int data_len;
4653 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4655 if (cmd->hdr.return_code) {
4656 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4659 if (cmd->data.setadapterparms.hdr.return_code) {
4660 cmd->hdr.return_code =
4661 cmd->data.setadapterparms.hdr.return_code;
4662 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4666 adp_cmd = &cmd->data.setadapterparms;
4667 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4668 if (adp_cmd->hdr.seq_no == 1) {
4669 snmp_data = &adp_cmd->data.snmp;
4671 snmp_data = &adp_cmd->data.snmp.request;
4672 data_len -= offsetof(struct qeth_snmp_cmd, request);
4675 /* check if there is enough room in userspace */
4676 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4677 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4680 QETH_CARD_TEXT_(card, 4, "snore%i",
4681 cmd->data.setadapterparms.hdr.used_total);
4682 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4683 cmd->data.setadapterparms.hdr.seq_no);
4684 /*copy entries to user buffer*/
4685 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4686 qinfo->udata_offset += data_len;
4688 if (cmd->data.setadapterparms.hdr.seq_no <
4689 cmd->data.setadapterparms.hdr.used_total)
4694 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4696 struct qeth_snmp_ureq __user *ureq;
4697 struct qeth_cmd_buffer *iob;
4698 unsigned int req_len;
4699 struct qeth_arp_query_info qinfo = {0, };
4702 QETH_CARD_TEXT(card, 3, "snmpcmd");
4704 if (IS_VM_NIC(card))
4707 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4711 ureq = (struct qeth_snmp_ureq __user *) udata;
4712 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4713 get_user(req_len, &ureq->hdr.req_len))
4716 /* Sanitize user input, to avoid overflows in iob size calculation: */
4717 if (req_len > QETH_BUFSIZE)
4720 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4724 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4725 &ureq->cmd, req_len)) {
4730 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4735 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4737 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4739 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4740 CARD_DEVID(card), rc);
4742 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4750 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4751 struct qeth_reply *reply,
4754 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4755 struct qeth_qoat_priv *priv = reply->param;
4758 QETH_CARD_TEXT(card, 3, "qoatcb");
4759 if (qeth_setadpparms_inspect_rc(cmd))
4762 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4764 if (resdatalen > (priv->buffer_len - priv->response_len))
4767 memcpy(priv->buffer + priv->response_len,
4768 &cmd->data.setadapterparms.hdr, resdatalen);
4769 priv->response_len += resdatalen;
4771 if (cmd->data.setadapterparms.hdr.seq_no <
4772 cmd->data.setadapterparms.hdr.used_total)
4777 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4780 struct qeth_cmd_buffer *iob;
4781 struct qeth_ipa_cmd *cmd;
4782 struct qeth_query_oat *oat_req;
4783 struct qeth_query_oat_data oat_data;
4784 struct qeth_qoat_priv priv;
4787 QETH_CARD_TEXT(card, 3, "qoatcmd");
4789 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4792 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4795 priv.buffer_len = oat_data.buffer_len;
4796 priv.response_len = 0;
4797 priv.buffer = vzalloc(oat_data.buffer_len);
4801 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4802 SETADP_DATA_SIZEOF(query_oat));
4807 cmd = __ipa_cmd(iob);
4808 oat_req = &cmd->data.setadapterparms.data.query_oat;
4809 oat_req->subcmd_code = oat_data.command;
4811 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
4813 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4814 u64_to_user_ptr(oat_data.ptr);
4815 oat_data.response_len = priv.response_len;
4817 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4818 copy_to_user(udata, &oat_data, sizeof(oat_data)))
4827 static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4828 struct qeth_reply *reply_priv,
4831 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4832 struct qeth_link_info *link_info = reply_priv->param;
4833 struct qeth_query_oat_physical_if *phys_if;
4834 struct qeth_query_oat_reply *reply;
4836 QETH_CARD_TEXT(card, 2, "qoatincb");
4837 if (qeth_setadpparms_inspect_rc(cmd))
4840 /* Multi-part reply is unexpected, don't bother: */
4841 if (cmd->data.setadapterparms.hdr.used_total > 1)
4844 /* Expect the reply to start with phys_if data: */
4845 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4846 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4847 reply->length < sizeof(*reply))
4850 phys_if = &reply->phys_if;
4852 switch (phys_if->speed_duplex) {
4853 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4854 link_info->speed = SPEED_10;
4855 link_info->duplex = DUPLEX_HALF;
4857 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4858 link_info->speed = SPEED_10;
4859 link_info->duplex = DUPLEX_FULL;
4861 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4862 link_info->speed = SPEED_100;
4863 link_info->duplex = DUPLEX_HALF;
4865 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4866 link_info->speed = SPEED_100;
4867 link_info->duplex = DUPLEX_FULL;
4869 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4870 link_info->speed = SPEED_1000;
4871 link_info->duplex = DUPLEX_HALF;
4873 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4874 link_info->speed = SPEED_1000;
4875 link_info->duplex = DUPLEX_FULL;
4877 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4878 link_info->speed = SPEED_10000;
4879 link_info->duplex = DUPLEX_FULL;
4881 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4882 link_info->speed = SPEED_25000;
4883 link_info->duplex = DUPLEX_FULL;
4885 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4887 link_info->speed = SPEED_UNKNOWN;
4888 link_info->duplex = DUPLEX_UNKNOWN;
4892 switch (phys_if->media_type) {
4893 case QETH_QOAT_PHYS_MEDIA_COPPER:
4894 link_info->port = PORT_TP;
4895 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4897 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
4898 link_info->port = PORT_FIBRE;
4899 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4901 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4902 link_info->port = PORT_FIBRE;
4903 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
4906 link_info->port = PORT_OTHER;
4907 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4914 static void qeth_init_link_info(struct qeth_card *card)
4916 qeth_default_link_info(card);
4918 /* Get more accurate data via QUERY OAT: */
4919 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4920 struct qeth_link_info link_info;
4921 struct qeth_cmd_buffer *iob;
4923 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4924 SETADP_DATA_SIZEOF(query_oat));
4926 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
4927 struct qeth_query_oat *oat_req;
4929 oat_req = &cmd->data.setadapterparms.data.query_oat;
4930 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
4932 if (!qeth_send_ipa_cmd(card, iob,
4933 qeth_init_link_info_oat_cb,
4935 if (link_info.speed != SPEED_UNKNOWN)
4936 card->info.link_info.speed = link_info.speed;
4937 if (link_info.duplex != DUPLEX_UNKNOWN)
4938 card->info.link_info.duplex = link_info.duplex;
4939 if (link_info.port != PORT_OTHER)
4940 card->info.link_info.port = link_info.port;
4941 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
4942 card->info.link_info.link_mode = link_info.link_mode;
4949 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4950 * @card: pointer to a qeth_card
4953 * 0, if a MAC address has been set for the card's netdevice
4954 * a return code, for various error conditions
4956 int qeth_vm_request_mac(struct qeth_card *card)
4958 struct diag26c_mac_resp *response;
4959 struct diag26c_mac_req *request;
4962 QETH_CARD_TEXT(card, 2, "vmreqmac");
4964 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4965 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4966 if (!request || !response) {
4971 request->resp_buf_len = sizeof(*response);
4972 request->resp_version = DIAG26C_VERSION2;
4973 request->op_code = DIAG26C_GET_MAC;
4974 request->devno = card->info.ddev_devno;
4976 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4977 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4978 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4981 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4983 if (request->resp_buf_len < sizeof(*response) ||
4984 response->version != request->resp_version) {
4986 QETH_CARD_TEXT(card, 2, "badresp");
4987 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4988 sizeof(request->resp_buf_len));
4989 } else if (!is_valid_ether_addr(response->mac)) {
4991 QETH_CARD_TEXT(card, 2, "badmac");
4992 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
4994 eth_hw_addr_set(card->dev, response->mac);
5002 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5004 static void qeth_determine_capabilities(struct qeth_card *card)
5006 struct qeth_channel *channel = &card->data;
5007 struct ccw_device *ddev = channel->ccwdev;
5009 int ddev_offline = 0;
5011 QETH_CARD_TEXT(card, 2, "detcapab");
5012 if (!ddev->online) {
5014 rc = qeth_start_channel(channel);
5016 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5021 rc = qeth_read_conf_data(card);
5023 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5024 CARD_DEVID(card), rc);
5025 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5029 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5031 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5033 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5034 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5035 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5036 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5037 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
5038 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5039 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5040 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5041 dev_info(&card->gdev->dev,
5042 "Completion Queueing supported\n");
5044 card->options.cq = QETH_CQ_NOTAVAILABLE;
5048 if (ddev_offline == 1)
5049 qeth_stop_channel(channel);
5054 static void qeth_read_ccw_conf_data(struct qeth_card *card)
5056 struct qeth_card_info *info = &card->info;
5057 struct ccw_device *cdev = CARD_DDEV(card);
5058 struct ccw_dev_id dev_id;
5060 QETH_CARD_TEXT(card, 2, "ccwconfd");
5061 ccw_device_get_id(cdev, &dev_id);
5063 info->ddev_devno = dev_id.devno;
5064 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5065 !ccw_device_get_iid(cdev, &info->iid) &&
5066 !ccw_device_get_chid(cdev, 0, &info->chid);
5067 info->ssid = dev_id.ssid;
5069 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5070 info->chid, info->chpid);
5072 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5073 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5074 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5075 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5076 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5077 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5078 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5081 static int qeth_qdio_establish(struct qeth_card *card)
5083 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5084 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
5085 struct qeth_qib_parms *qib_parms = NULL;
5086 struct qdio_initialize init_data;
5087 unsigned int no_input_qs = 1;
5091 QETH_CARD_TEXT(card, 2, "qdioest");
5093 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5094 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5098 qeth_fill_qib_parms(card, qib_parms);
5101 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
5102 if (card->options.cq == QETH_CQ_ENABLED) {
5103 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
5107 for (i = 0; i < card->qdio.no_out_queues; i++)
5108 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
5110 memset(&init_data, 0, sizeof(struct qdio_initialize));
5111 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5113 init_data.qib_param_field_format = 0;
5114 init_data.qib_param_field = (void *)qib_parms;
5115 init_data.no_input_qs = no_input_qs;
5116 init_data.no_output_qs = card->qdio.no_out_queues;
5117 init_data.input_handler = qeth_qdio_input_handler;
5118 init_data.output_handler = qeth_qdio_output_handler;
5119 init_data.irq_poll = qeth_qdio_poll;
5120 init_data.int_parm = (unsigned long) card;
5121 init_data.input_sbal_addr_array = in_sbal_ptrs;
5122 init_data.output_sbal_addr_array = out_sbal_ptrs;
5124 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5125 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5126 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5127 init_data.no_output_qs);
5129 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5132 rc = qdio_establish(CARD_DDEV(card), &init_data);
5134 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5135 qdio_free(CARD_DDEV(card));
5139 switch (card->options.cq) {
5140 case QETH_CQ_ENABLED:
5141 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5143 case QETH_CQ_DISABLED:
5144 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5155 static void qeth_core_free_card(struct qeth_card *card)
5157 QETH_CARD_TEXT(card, 2, "freecrd");
5159 unregister_service_level(&card->qeth_service_level);
5160 debugfs_remove_recursive(card->debugfs);
5161 qeth_put_cmd(card->read_cmd);
5162 destroy_workqueue(card->event_wq);
5163 dev_set_drvdata(&card->gdev->dev, NULL);
5167 static void qeth_trace_features(struct qeth_card *card)
5169 QETH_CARD_TEXT(card, 2, "features");
5170 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5171 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5172 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5173 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5174 sizeof(card->info.diagass_support));
5177 static struct ccw_device_id qeth_ids[] = {
5178 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5179 .driver_info = QETH_CARD_TYPE_OSD},
5180 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5181 .driver_info = QETH_CARD_TYPE_IQD},
5182 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5183 .driver_info = QETH_CARD_TYPE_OSM},
5184 #ifdef CONFIG_QETH_OSX
5185 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5186 .driver_info = QETH_CARD_TYPE_OSX},
5190 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5192 static struct ccw_driver qeth_ccw_driver = {
5194 .owner = THIS_MODULE,
5198 .probe = ccwgroup_probe_ccwdev,
5199 .remove = ccwgroup_remove_ccwdev,
5202 static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
5207 QETH_CARD_TEXT(card, 2, "hrdsetup");
5208 atomic_set(&card->force_alloc_skb, 0);
5209 rc = qeth_update_from_chp_desc(card);
5214 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5216 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
5217 qeth_stop_channel(&card->data);
5218 qeth_stop_channel(&card->write);
5219 qeth_stop_channel(&card->read);
5220 qdio_free(CARD_DDEV(card));
5222 rc = qeth_start_channel(&card->read);
5225 rc = qeth_start_channel(&card->write);
5228 rc = qeth_start_channel(&card->data);
5232 if (rc == -ERESTARTSYS) {
5233 QETH_CARD_TEXT(card, 2, "break1");
5236 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5243 qeth_determine_capabilities(card);
5244 qeth_read_ccw_conf_data(card);
5245 qeth_idx_init(card);
5247 rc = qeth_idx_activate_read_channel(card);
5249 QETH_CARD_TEXT(card, 2, "break2");
5252 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5259 rc = qeth_idx_activate_write_channel(card);
5261 QETH_CARD_TEXT(card, 2, "break3");
5264 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
5270 card->read_or_write_problem = 0;
5271 rc = qeth_mpc_initialize(card);
5273 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5277 rc = qeth_send_startlan(card);
5279 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5280 if (rc == -ENETDOWN) {
5281 dev_warn(&card->gdev->dev, "The LAN is offline\n");
5282 *carrier_ok = false;
5290 card->options.ipa4.supported = 0;
5291 card->options.ipa6.supported = 0;
5292 card->options.adp.supported = 0;
5293 card->options.sbp.supported_funcs = 0;
5294 card->info.diagass_support = 0;
5295 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5298 if (qeth_is_supported(card, IPA_IPV6)) {
5299 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5303 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5304 rc = qeth_query_setadapterparms(card);
5306 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
5310 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5311 rc = qeth_query_setdiagass(card);
5313 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5316 qeth_trace_features(card);
5318 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5319 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5320 card->info.hwtrap = 0;
5322 if (card->options.isolation != ISOLATION_MODE_NONE) {
5323 rc = qeth_setadpparms_set_access_ctrl(card,
5324 card->options.isolation);
5329 qeth_init_link_info(card);
5331 rc = qeth_init_qdio_queues(card);
5333 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5339 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5340 "an error on the device\n");
5341 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5342 CARD_DEVID(card), rc);
5346 static int qeth_set_online(struct qeth_card *card,
5347 const struct qeth_discipline *disc)
5352 mutex_lock(&card->conf_mutex);
5353 QETH_CARD_TEXT(card, 2, "setonlin");
5355 rc = qeth_hardsetup_card(card, &carrier_ok);
5357 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5362 qeth_print_status_message(card);
5364 if (card->dev->reg_state != NETREG_REGISTERED)
5365 /* no need for locking / error handling at this early stage: */
5366 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
5368 rc = disc->set_online(card, carrier_ok);
5372 /* let user_space know that device is online */
5373 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5375 mutex_unlock(&card->conf_mutex);
5380 qeth_qdio_clear_card(card, 0);
5381 qeth_clear_working_pool_list(card);
5382 qeth_flush_local_addrs(card);
5384 qeth_stop_channel(&card->data);
5385 qeth_stop_channel(&card->write);
5386 qeth_stop_channel(&card->read);
5387 qdio_free(CARD_DDEV(card));
5389 mutex_unlock(&card->conf_mutex);
5393 int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5398 mutex_lock(&card->conf_mutex);
5399 QETH_CARD_TEXT(card, 3, "setoffl");
5401 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5402 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5403 card->info.hwtrap = 1;
5406 /* cancel any stalled cmd that might block the rtnl: */
5407 qeth_clear_ipacmd_list(card);
5410 netif_device_detach(card->dev);
5411 netif_carrier_off(card->dev);
5414 cancel_work_sync(&card->rx_mode_work);
5416 disc->set_offline(card);
5418 qeth_qdio_clear_card(card, 0);
5419 qeth_drain_output_queues(card);
5420 qeth_clear_working_pool_list(card);
5421 qeth_flush_local_addrs(card);
5422 card->info.promisc_mode = 0;
5423 qeth_default_link_info(card);
5425 rc = qeth_stop_channel(&card->data);
5426 rc2 = qeth_stop_channel(&card->write);
5427 rc3 = qeth_stop_channel(&card->read);
5429 rc = (rc2) ? rc2 : rc3;
5431 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5432 qdio_free(CARD_DDEV(card));
5434 /* let user_space know that device is offline */
5435 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5437 mutex_unlock(&card->conf_mutex);
5440 EXPORT_SYMBOL_GPL(qeth_set_offline);
5442 static int qeth_do_reset(void *data)
5444 const struct qeth_discipline *disc;
5445 struct qeth_card *card = data;
5448 /* Lock-free, other users will block until we are done. */
5449 disc = card->discipline;
5451 QETH_CARD_TEXT(card, 2, "recover1");
5452 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5454 QETH_CARD_TEXT(card, 2, "recover2");
5455 dev_warn(&card->gdev->dev,
5456 "A recovery process has been started for the device\n");
5458 qeth_set_offline(card, disc, true);
5459 rc = qeth_set_online(card, disc);
5461 dev_info(&card->gdev->dev,
5462 "Device successfully recovered!\n");
5464 qeth_set_offline(card, disc, true);
5465 ccwgroup_set_offline(card->gdev, false);
5466 dev_warn(&card->gdev->dev,
5467 "The qeth device driver failed to recover an error on the device\n");
5469 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5470 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5474 #if IS_ENABLED(CONFIG_QETH_L3)
5475 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5476 struct qeth_hdr *hdr)
5478 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5479 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5480 struct net_device *dev = skb->dev;
5482 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5483 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5484 "FAKELL", skb->len);
5488 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5489 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5491 unsigned char tg_addr[ETH_ALEN];
5493 skb_reset_network_header(skb);
5494 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5495 case QETH_CAST_MULTICAST:
5496 if (prot == ETH_P_IP)
5497 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5499 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5500 QETH_CARD_STAT_INC(card, rx_multicast);
5502 case QETH_CAST_BROADCAST:
5503 ether_addr_copy(tg_addr, dev->broadcast);
5504 QETH_CARD_STAT_INC(card, rx_multicast);
5507 if (card->options.sniffer)
5508 skb->pkt_type = PACKET_OTHERHOST;
5509 ether_addr_copy(tg_addr, dev->dev_addr);
5512 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5513 dev_hard_header(skb, dev, prot, tg_addr,
5514 &l3_hdr->next_hop.rx.src_mac, skb->len);
5516 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5520 /* copy VLAN tag from hdr into skb */
5521 if (!card->options.sniffer &&
5522 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5523 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5524 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5526 l3_hdr->next_hop.rx.vlan_id;
5528 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5533 static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5534 bool uses_frags, bool is_cso)
5536 struct napi_struct *napi = &card->napi;
5538 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5539 skb->ip_summed = CHECKSUM_UNNECESSARY;
5540 QETH_CARD_STAT_INC(card, rx_skb_csum);
5542 skb->ip_summed = CHECKSUM_NONE;
5545 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5546 QETH_CARD_STAT_INC(card, rx_packets);
5547 if (skb_is_nonlinear(skb)) {
5548 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5549 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5550 skb_shinfo(skb)->nr_frags);
5554 napi_gro_frags(napi);
5556 skb->protocol = eth_type_trans(skb, skb->dev);
5557 napi_gro_receive(napi, skb);
5561 static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
5563 struct page *page = virt_to_page(data);
5564 unsigned int next_frag;
5566 next_frag = skb_shinfo(skb)->nr_frags;
5568 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5572 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5574 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5577 static int qeth_extract_skb(struct qeth_card *card,
5578 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
5581 struct qeth_priv *priv = netdev_priv(card->dev);
5582 struct qdio_buffer *buffer = qethbuffer->buffer;
5583 struct napi_struct *napi = &card->napi;
5584 struct qdio_buffer_element *element;
5585 unsigned int linear_len = 0;
5586 bool uses_frags = false;
5587 int offset = *__offset;
5588 bool use_rx_sg = false;
5589 unsigned int headroom;
5590 struct qeth_hdr *hdr;
5591 struct sk_buff *skb;
5595 element = &buffer->element[*element_no];
5598 /* qeth_hdr must not cross element boundaries */
5599 while (element->length < offset + sizeof(struct qeth_hdr)) {
5600 if (qeth_is_last_sbale(element))
5606 hdr = phys_to_virt(element->addr) + offset;
5607 offset += sizeof(*hdr);
5610 switch (hdr->hdr.l2.id) {
5611 case QETH_HEADER_TYPE_LAYER2:
5612 skb_len = hdr->hdr.l2.pkt_length;
5613 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5615 linear_len = ETH_HLEN;
5618 case QETH_HEADER_TYPE_LAYER3:
5619 skb_len = hdr->hdr.l3.length;
5620 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5622 if (!IS_LAYER3(card)) {
5623 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5627 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5628 linear_len = ETH_HLEN;
5633 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5634 linear_len = sizeof(struct ipv6hdr);
5636 linear_len = sizeof(struct iphdr);
5637 headroom = ETH_HLEN;
5640 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5641 QETH_CARD_STAT_INC(card, rx_frame_errors);
5643 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5645 /* Can't determine packet length, drop the whole buffer. */
5646 return -EPROTONOSUPPORT;
5649 if (skb_len < linear_len) {
5650 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5654 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5655 (skb_len > READ_ONCE(priv->rx_copybreak) &&
5656 !atomic_read(&card->force_alloc_skb));
5659 /* QETH_CQ_ENABLED only: */
5660 if (qethbuffer->rx_skb &&
5661 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
5662 skb = qethbuffer->rx_skb;
5663 qethbuffer->rx_skb = NULL;
5667 skb = napi_get_frags(napi);
5669 /* -ENOMEM, no point in falling back further. */
5670 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5674 if (skb_tailroom(skb) >= linear_len + headroom) {
5679 netdev_info_once(card->dev,
5680 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5681 linear_len + headroom, skb_tailroom(skb));
5682 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
5685 linear_len = skb_len;
5686 skb = napi_alloc_skb(napi, linear_len + headroom);
5688 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5694 skb_reserve(skb, headroom);
5697 int data_len = min(skb_len, (int)(element->length - offset));
5698 char *data = phys_to_virt(element->addr) + offset;
5700 skb_len -= data_len;
5703 /* Extract data from current element: */
5704 if (skb && data_len) {
5706 unsigned int copy_len;
5708 copy_len = min_t(unsigned int, linear_len,
5711 skb_put_data(skb, data, copy_len);
5712 linear_len -= copy_len;
5713 data_len -= copy_len;
5718 qeth_create_skb_frag(skb, data, data_len);
5721 /* Step forward to next element: */
5723 if (qeth_is_last_sbale(element)) {
5724 QETH_CARD_TEXT(card, 4, "unexeob");
5725 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5728 napi_free_frags(napi);
5731 QETH_CARD_STAT_INC(card,
5741 /* This packet was skipped, go get another one: */
5745 *element_no = element - &buffer->element[0];
5748 #if IS_ENABLED(CONFIG_QETH_L3)
5749 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3)
5750 qeth_l3_rebuild_skb(card, skb, hdr);
5753 qeth_receive_skb(card, skb, uses_frags, is_cso);
5757 static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5758 struct qeth_qdio_buffer *buf, bool *done)
5760 unsigned int work_done = 0;
5763 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
5764 &card->rx.e_offset)) {
5776 static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
5778 struct qeth_rx *ctx = &card->rx;
5779 unsigned int work_done = 0;
5781 while (budget > 0) {
5782 struct qeth_qdio_buffer *buffer;
5783 unsigned int skbs_done = 0;
5786 /* Fetch completed RX buffers: */
5787 if (!card->rx.b_count) {
5788 card->rx.qdio_err = 0;
5790 qdio_inspect_input_queue(CARD_DDEV(card), 0,
5792 &card->rx.qdio_err);
5793 if (card->rx.b_count <= 0) {
5794 card->rx.b_count = 0;
5799 /* Process one completed RX buffer: */
5800 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5801 if (!(card->rx.qdio_err &&
5802 qeth_check_qdio_errors(card, buffer->buffer,
5803 card->rx.qdio_err, "qinerr")))
5804 skbs_done = qeth_extract_skbs(card, budget, buffer,
5809 work_done += skbs_done;
5810 budget -= skbs_done;
5813 QETH_CARD_STAT_INC(card, rx_bufs);
5814 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
5815 buffer->pool_entry = NULL;
5818 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5821 /* Step forward to next buffer: */
5822 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5823 card->rx.buf_element = 0;
5824 card->rx.e_offset = 0;
5831 static void qeth_cq_poll(struct qeth_card *card)
5833 unsigned int work_done = 0;
5835 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5836 unsigned int start, error;
5839 completed = qdio_inspect_input_queue(CARD_DDEV(card), 1, &start,
5844 qeth_qdio_cq_handler(card, error, 1, start, completed);
5845 work_done += completed;
5849 int qeth_poll(struct napi_struct *napi, int budget)
5851 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5852 unsigned int work_done;
5854 work_done = qeth_rx_poll(card, budget);
5856 if (qeth_use_tx_irqs(card)) {
5857 struct qeth_qdio_out_q *queue;
5860 qeth_for_each_output_queue(card, queue, i) {
5861 if (!qeth_out_queue_is_empty(queue))
5862 napi_schedule(&queue->napi);
5866 if (card->options.cq == QETH_CQ_ENABLED)
5870 struct qeth_rx *ctx = &card->rx;
5872 /* Process any substantial refill backlog: */
5873 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5875 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
5876 if (work_done >= budget)
5880 if (napi_complete_done(napi, work_done) &&
5881 qdio_start_irq(CARD_DDEV(card)))
5882 napi_schedule(napi);
5886 EXPORT_SYMBOL_GPL(qeth_poll);
5888 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
5889 unsigned int bidx, unsigned int qdio_error,
5892 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5893 u8 sflags = buffer->buffer->element[15].sflags;
5894 struct qeth_card *card = queue->card;
5895 bool error = !!qdio_error;
5897 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
5898 struct qaob *aob = buffer->aob;
5899 struct qeth_qaob_priv1 *priv;
5900 enum iucv_tx_notify notify;
5903 netdev_WARN_ONCE(card->dev,
5904 "Pending TX buffer %#x without QAOB on TX queue %u\n",
5905 bidx, queue->queue_no);
5906 qeth_schedule_recovery(card);
5910 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5912 priv = (struct qeth_qaob_priv1 *)&aob->user1;
5913 /* QAOB hasn't completed yet: */
5914 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
5915 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5917 /* Prepare the queue slot for immediate re-use: */
5918 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5919 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
5920 QETH_CARD_TEXT(card, 2, "outofbuf");
5921 qeth_schedule_recovery(card);
5924 list_add(&buffer->list_entry, &queue->pending_bufs);
5925 /* Skip clearing the buffer: */
5929 /* QAOB already completed: */
5930 notify = qeth_compute_cq_notification(aob->aorc, 0);
5931 qeth_notify_skbs(queue, buffer, notify);
5932 error = !!aob->aorc;
5933 memset(aob, 0, sizeof(*aob));
5934 } else if (card->options.cq == QETH_CQ_ENABLED) {
5935 qeth_notify_skbs(queue, buffer,
5936 qeth_compute_cq_notification(sflags, 0));
5939 qeth_clear_output_buffer(queue, buffer, error, budget);
5942 static int qeth_tx_poll(struct napi_struct *napi, int budget)
5944 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5945 unsigned int queue_no = queue->queue_no;
5946 struct qeth_card *card = queue->card;
5947 struct net_device *dev = card->dev;
5948 unsigned int work_done = 0;
5949 struct netdev_queue *txq;
5952 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5954 txq = netdev_get_tx_queue(dev, queue_no);
5957 unsigned int start, error, i;
5958 unsigned int packets = 0;
5959 unsigned int bytes = 0;
5962 qeth_tx_complete_pending_bufs(card, queue, false, budget);
5964 if (qeth_out_queue_is_empty(queue)) {
5965 napi_complete(napi);
5969 /* Give the CPU a breather: */
5970 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5971 QETH_TXQ_STAT_INC(queue, completion_yield);
5972 if (napi_complete_done(napi, 0))
5973 napi_schedule(napi);
5977 completed = qdio_inspect_output_queue(CARD_DDEV(card), queue_no,
5979 if (completed <= 0) {
5980 /* Ensure we see TX completion for pending work: */
5981 if (napi_complete_done(napi, 0) &&
5982 !atomic_read(&queue->set_pci_flags_count))
5983 qeth_tx_arm_timer(queue, queue->rescan_usecs);
5987 for (i = start; i < start + completed; i++) {
5988 struct qeth_qdio_out_buffer *buffer;
5989 unsigned int bidx = QDIO_BUFNR(i);
5991 buffer = queue->bufs[bidx];
5992 packets += buffer->frames;
5993 bytes += buffer->bytes;
5995 qeth_handle_send_error(card, buffer, error);
5997 qeth_iqd_tx_complete(queue, bidx, error, budget);
5999 qeth_clear_output_buffer(queue, buffer, error,
6003 atomic_sub(completed, &queue->used_buffers);
6004 work_done += completed;
6006 netdev_tx_completed_queue(txq, packets, bytes);
6008 qeth_check_outbound_queue(queue);
6010 /* xmit may have observed the full-condition, but not yet
6011 * stopped the txq. In which case the code below won't trigger.
6012 * So before returning, xmit will re-check the txq's fill level
6013 * and wake it up if needed.
6015 if (netif_tx_queue_stopped(txq) &&
6016 !qeth_out_queue_is_full(queue))
6017 netif_tx_wake_queue(txq);
6021 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6023 if (!cmd->hdr.return_code)
6024 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6025 return cmd->hdr.return_code;
6028 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6029 struct qeth_reply *reply,
6032 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6033 struct qeth_ipa_caps *caps = reply->param;
6035 if (qeth_setassparms_inspect_rc(cmd))
6038 caps->supported = cmd->data.setassparms.data.caps.supported;
6039 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6043 int qeth_setassparms_cb(struct qeth_card *card,
6044 struct qeth_reply *reply, unsigned long data)
6046 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6048 QETH_CARD_TEXT(card, 4, "defadpcb");
6050 if (cmd->hdr.return_code)
6053 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6054 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
6055 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
6056 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
6057 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
6060 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
6062 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6063 enum qeth_ipa_funcs ipa_func,
6065 unsigned int data_length,
6066 enum qeth_prot_versions prot)
6068 struct qeth_ipacmd_setassparms *setassparms;
6069 struct qeth_ipacmd_setassparms_hdr *hdr;
6070 struct qeth_cmd_buffer *iob;
6072 QETH_CARD_TEXT(card, 4, "getasscm");
6073 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6075 offsetof(struct qeth_ipacmd_setassparms,
6080 setassparms = &__ipa_cmd(iob)->data.setassparms;
6081 setassparms->assist_no = ipa_func;
6083 hdr = &setassparms->hdr;
6084 hdr->length = sizeof(*hdr) + data_length;
6085 hdr->command_code = cmd_code;
6088 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
6090 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6091 enum qeth_ipa_funcs ipa_func,
6092 u16 cmd_code, u32 *data,
6093 enum qeth_prot_versions prot)
6095 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
6096 struct qeth_cmd_buffer *iob;
6098 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
6099 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
6104 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
6105 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
6107 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
6109 static void qeth_unregister_dbf_views(void)
6113 for (x = 0; x < QETH_DBF_INFOS; x++) {
6114 debug_unregister(qeth_dbf[x].id);
6115 qeth_dbf[x].id = NULL;
6119 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
6121 char dbf_txt_buf[32];
6124 if (!debug_level_enabled(id, level))
6126 va_start(args, fmt);
6127 vscnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6129 debug_text_event(id, level, dbf_txt_buf);
6131 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6133 static int qeth_register_dbf_views(void)
6138 for (x = 0; x < QETH_DBF_INFOS; x++) {
6139 /* register the areas */
6140 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6144 if (qeth_dbf[x].id == NULL) {
6145 qeth_unregister_dbf_views();
6149 /* register a view */
6150 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6152 qeth_unregister_dbf_views();
6156 /* set a passing level */
6157 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6163 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
6165 int qeth_setup_discipline(struct qeth_card *card,
6166 enum qeth_discipline_id discipline)
6170 mutex_lock(&qeth_mod_mutex);
6171 switch (discipline) {
6172 case QETH_DISCIPLINE_LAYER3:
6173 card->discipline = try_then_request_module(
6174 symbol_get(qeth_l3_discipline), "qeth_l3");
6176 case QETH_DISCIPLINE_LAYER2:
6177 card->discipline = try_then_request_module(
6178 symbol_get(qeth_l2_discipline), "qeth_l2");
6183 mutex_unlock(&qeth_mod_mutex);
6185 if (!card->discipline) {
6186 dev_err(&card->gdev->dev, "There is no kernel module to "
6187 "support discipline %d\n", discipline);
6191 rc = card->discipline->setup(card->gdev);
6193 if (discipline == QETH_DISCIPLINE_LAYER2)
6194 symbol_put(qeth_l2_discipline);
6196 symbol_put(qeth_l3_discipline);
6197 card->discipline = NULL;
6202 card->options.layer = discipline;
6206 void qeth_remove_discipline(struct qeth_card *card)
6208 card->discipline->remove(card->gdev);
6210 if (IS_LAYER2(card))
6211 symbol_put(qeth_l2_discipline);
6213 symbol_put(qeth_l3_discipline);
6214 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
6215 card->discipline = NULL;
6218 static const struct device_type qeth_generic_devtype = {
6219 .name = "qeth_generic",
6222 #define DBF_NAME_LEN 20
6224 struct qeth_dbf_entry {
6225 char dbf_name[DBF_NAME_LEN];
6226 debug_info_t *dbf_info;
6227 struct list_head dbf_list;
6230 static LIST_HEAD(qeth_dbf_list);
6231 static DEFINE_MUTEX(qeth_dbf_list_mutex);
6233 static debug_info_t *qeth_get_dbf_entry(char *name)
6235 struct qeth_dbf_entry *entry;
6236 debug_info_t *rc = NULL;
6238 mutex_lock(&qeth_dbf_list_mutex);
6239 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6240 if (strcmp(entry->dbf_name, name) == 0) {
6241 rc = entry->dbf_info;
6245 mutex_unlock(&qeth_dbf_list_mutex);
6249 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6251 struct qeth_dbf_entry *new_entry;
6253 card->debug = debug_register(name, 2, 1, 8);
6255 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6258 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6260 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6263 strscpy(new_entry->dbf_name, name, sizeof(new_entry->dbf_name));
6264 new_entry->dbf_info = card->debug;
6265 mutex_lock(&qeth_dbf_list_mutex);
6266 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6267 mutex_unlock(&qeth_dbf_list_mutex);
6272 debug_unregister(card->debug);
6277 static void qeth_clear_dbf_list(void)
6279 struct qeth_dbf_entry *entry, *tmp;
6281 mutex_lock(&qeth_dbf_list_mutex);
6282 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6283 list_del(&entry->dbf_list);
6284 debug_unregister(entry->dbf_info);
6287 mutex_unlock(&qeth_dbf_list_mutex);
6290 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6292 struct net_device *dev;
6293 struct qeth_priv *priv;
6295 switch (card->info.type) {
6296 case QETH_CARD_TYPE_IQD:
6297 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
6298 ether_setup, QETH_MAX_OUT_QUEUES, 1);
6300 case QETH_CARD_TYPE_OSM:
6301 dev = alloc_etherdev(sizeof(*priv));
6304 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
6310 priv = netdev_priv(dev);
6311 priv->rx_copybreak = QETH_RX_COPYBREAK;
6312 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
6314 dev->ml_priv = card;
6315 dev->watchdog_timeo = QETH_TX_TIMEOUT;
6317 /* initialized when device first goes online: */
6320 SET_NETDEV_DEV(dev, &card->gdev->dev);
6321 netif_carrier_off(dev);
6323 dev->ethtool_ops = &qeth_ethtool_ops;
6324 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6325 dev->hw_features |= NETIF_F_SG;
6326 dev->vlan_features |= NETIF_F_SG;
6328 dev->features |= NETIF_F_SG;
6333 struct net_device *qeth_clone_netdev(struct net_device *orig)
6335 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6340 clone->dev_port = orig->dev_port;
6344 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6346 struct qeth_card *card;
6349 enum qeth_discipline_id enforced_disc;
6350 char dbf_name[DBF_NAME_LEN];
6352 QETH_DBF_TEXT(SETUP, 2, "probedev");
6355 if (!get_device(dev))
6358 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
6360 card = qeth_alloc_card(gdev);
6362 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
6367 scnprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6368 dev_name(&gdev->dev));
6369 card->debug = qeth_get_dbf_entry(dbf_name);
6371 rc = qeth_add_dbf_entry(card, dbf_name);
6376 qeth_setup_card(card);
6377 card->dev = qeth_alloc_netdev(card);
6383 qeth_determine_capabilities(card);
6384 qeth_set_blkt_defaults(card);
6386 card->qdio.in_q = qeth_alloc_qdio_queue();
6387 if (!card->qdio.in_q) {
6392 card->qdio.no_out_queues = card->dev->num_tx_queues;
6393 rc = qeth_update_from_chp_desc(card);
6397 gdev->dev.groups = qeth_dev_groups;
6399 enforced_disc = qeth_enforce_discipline(card);
6400 switch (enforced_disc) {
6401 case QETH_DISCIPLINE_UNDETERMINED:
6402 gdev->dev.type = &qeth_generic_devtype;
6405 card->info.layer_enforced = true;
6406 /* It's so early that we don't need the discipline_mutex yet. */
6407 rc = qeth_setup_discipline(card, enforced_disc);
6409 goto err_setup_disc;
6418 qeth_free_qdio_queue(card->qdio.in_q);
6420 free_netdev(card->dev);
6422 qeth_core_free_card(card);
6428 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6430 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6432 QETH_CARD_TEXT(card, 2, "removedv");
6434 mutex_lock(&card->discipline_mutex);
6435 if (card->discipline)
6436 qeth_remove_discipline(card);
6437 mutex_unlock(&card->discipline_mutex);
6439 qeth_free_qdio_queues(card);
6441 qeth_free_qdio_queue(card->qdio.in_q);
6442 free_netdev(card->dev);
6443 qeth_core_free_card(card);
6444 put_device(&gdev->dev);
6447 static int qeth_core_set_online(struct ccwgroup_device *gdev)
6449 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6451 enum qeth_discipline_id def_discipline;
6453 mutex_lock(&card->discipline_mutex);
6454 if (!card->discipline) {
6455 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6456 QETH_DISCIPLINE_LAYER2;
6457 rc = qeth_setup_discipline(card, def_discipline);
6462 rc = qeth_set_online(card, card->discipline);
6465 mutex_unlock(&card->discipline_mutex);
6469 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6471 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6474 mutex_lock(&card->discipline_mutex);
6475 rc = qeth_set_offline(card, card->discipline, false);
6476 mutex_unlock(&card->discipline_mutex);
6481 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6483 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6485 qeth_set_allowed_threads(card, 0, 1);
6486 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6487 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6488 qeth_qdio_clear_card(card, 0);
6489 qeth_drain_output_queues(card);
6490 qdio_free(CARD_DDEV(card));
6493 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6498 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6501 return err ? err : count;
6503 static DRIVER_ATTR_WO(group);
6505 static struct attribute *qeth_drv_attrs[] = {
6506 &driver_attr_group.attr,
6509 static struct attribute_group qeth_drv_attr_group = {
6510 .attrs = qeth_drv_attrs,
6512 static const struct attribute_group *qeth_drv_attr_groups[] = {
6513 &qeth_drv_attr_group,
6517 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6519 .groups = qeth_drv_attr_groups,
6520 .owner = THIS_MODULE,
6523 .ccw_driver = &qeth_ccw_driver,
6524 .setup = qeth_core_probe_device,
6525 .remove = qeth_core_remove_device,
6526 .set_online = qeth_core_set_online,
6527 .set_offline = qeth_core_set_offline,
6528 .shutdown = qeth_core_shutdown,
6531 int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
6533 struct qeth_card *card = dev->ml_priv;
6537 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6538 rc = qeth_snmp_command(card, data);
6540 case SIOC_QETH_GET_CARD_TYPE:
6541 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6545 case SIOC_QETH_QUERY_OAT:
6546 rc = qeth_query_oat_command(card, data);
6552 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6555 EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
6557 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6559 struct qeth_card *card = dev->ml_priv;
6560 struct mii_ioctl_data *mii_data;
6565 mii_data = if_mii(rq);
6566 mii_data->phy_id = 0;
6569 mii_data = if_mii(rq);
6570 if (mii_data->phy_id != 0)
6573 mii_data->val_out = qeth_mdio_read(dev,
6574 mii_data->phy_id, mii_data->reg_num);
6580 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6583 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6585 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6588 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6589 u32 *features = reply->param;
6591 if (qeth_setassparms_inspect_rc(cmd))
6594 *features = cmd->data.setassparms.data.flags_32bit;
6598 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6599 enum qeth_prot_versions prot)
6601 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6605 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6606 enum qeth_prot_versions prot, u8 *lp2lp)
6608 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6609 struct qeth_cmd_buffer *iob;
6610 struct qeth_ipa_caps caps;
6614 /* some L3 HW requires combined L3+L4 csum offload: */
6615 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6616 cstype == IPA_OUTBOUND_CHECKSUM)
6617 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6619 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6624 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6628 if ((required_features & features) != required_features) {
6629 qeth_set_csum_off(card, cstype, prot);
6633 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6634 SETASS_DATA_SIZEOF(flags_32bit),
6637 qeth_set_csum_off(card, cstype, prot);
6641 if (features & QETH_IPA_CHECKSUM_LP2LP)
6642 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6643 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6644 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6646 qeth_set_csum_off(card, cstype, prot);
6650 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6651 !qeth_ipa_caps_enabled(&caps, required_features)) {
6652 qeth_set_csum_off(card, cstype, prot);
6656 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6657 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6660 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6665 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6666 enum qeth_prot_versions prot, u8 *lp2lp)
6668 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
6669 qeth_set_csum_off(card, cstype, prot);
6672 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6675 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6676 struct qeth_tso_start_data *tso_data = reply->param;
6678 if (qeth_setassparms_inspect_rc(cmd))
6681 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6682 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6686 static int qeth_set_tso_off(struct qeth_card *card,
6687 enum qeth_prot_versions prot)
6689 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6690 IPA_CMD_ASS_STOP, NULL, prot);
6693 static int qeth_set_tso_on(struct qeth_card *card,
6694 enum qeth_prot_versions prot)
6696 struct qeth_tso_start_data tso_data;
6697 struct qeth_cmd_buffer *iob;
6698 struct qeth_ipa_caps caps;
6701 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6702 IPA_CMD_ASS_START, 0, prot);
6706 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6710 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6711 qeth_set_tso_off(card, prot);
6715 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6717 SETASS_DATA_SIZEOF(caps), prot);
6719 qeth_set_tso_off(card, prot);
6723 /* enable TSO capability */
6724 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6725 QETH_IPA_LARGE_SEND_TCP;
6726 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6728 qeth_set_tso_off(card, prot);
6732 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6733 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6734 qeth_set_tso_off(card, prot);
6738 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6743 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6744 enum qeth_prot_versions prot)
6746 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6749 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6751 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6754 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6755 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6756 QETH_PROT_IPV4, NULL);
6757 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6758 /* no/one Offload Assist available, so the rc is trivial */
6761 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6762 QETH_PROT_IPV6, NULL);
6765 /* enable: success if any Assist is active */
6766 return (rc_ipv6) ? rc_ipv4 : 0;
6768 /* disable: failure if any Assist is still active */
6769 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6773 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6774 * @dev: a net_device
6776 void qeth_enable_hw_features(struct net_device *dev)
6778 struct qeth_card *card = dev->ml_priv;
6779 netdev_features_t features;
6781 features = dev->features;
6782 /* force-off any feature that might need an IPA sequence.
6783 * netdev_update_features() will restart them.
6785 dev->features &= ~dev->hw_features;
6786 /* toggle VLAN filter, so that VIDs are re-programmed: */
6787 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6788 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6789 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6791 netdev_update_features(dev);
6792 if (features != dev->features)
6793 dev_warn(&card->gdev->dev,
6794 "Device recovery failed to restore all offload features\n");
6796 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6798 static void qeth_check_restricted_features(struct qeth_card *card,
6799 netdev_features_t changed,
6800 netdev_features_t actual)
6802 netdev_features_t ipv6_features = NETIF_F_TSO6;
6803 netdev_features_t ipv4_features = NETIF_F_TSO;
6805 if (!card->info.has_lp2lp_cso_v6)
6806 ipv6_features |= NETIF_F_IPV6_CSUM;
6807 if (!card->info.has_lp2lp_cso_v4)
6808 ipv4_features |= NETIF_F_IP_CSUM;
6810 if ((changed & ipv6_features) && !(actual & ipv6_features))
6811 qeth_flush_local_addrs6(card);
6812 if ((changed & ipv4_features) && !(actual & ipv4_features))
6813 qeth_flush_local_addrs4(card);
6816 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6818 struct qeth_card *card = dev->ml_priv;
6819 netdev_features_t changed = dev->features ^ features;
6822 QETH_CARD_TEXT(card, 2, "setfeat");
6823 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6825 if ((changed & NETIF_F_IP_CSUM)) {
6826 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6827 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6828 &card->info.has_lp2lp_cso_v4);
6830 changed ^= NETIF_F_IP_CSUM;
6832 if (changed & NETIF_F_IPV6_CSUM) {
6833 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6834 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6835 &card->info.has_lp2lp_cso_v6);
6837 changed ^= NETIF_F_IPV6_CSUM;
6839 if (changed & NETIF_F_RXCSUM) {
6840 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6842 changed ^= NETIF_F_RXCSUM;
6844 if (changed & NETIF_F_TSO) {
6845 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6848 changed ^= NETIF_F_TSO;
6850 if (changed & NETIF_F_TSO6) {
6851 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6854 changed ^= NETIF_F_TSO6;
6857 qeth_check_restricted_features(card, dev->features ^ features,
6858 dev->features ^ changed);
6860 /* everything changed successfully? */
6861 if ((dev->features ^ features) == changed)
6863 /* something went wrong. save changed features and return error */
6864 dev->features ^= changed;
6867 EXPORT_SYMBOL_GPL(qeth_set_features);
6869 netdev_features_t qeth_fix_features(struct net_device *dev,
6870 netdev_features_t features)
6872 struct qeth_card *card = dev->ml_priv;
6874 QETH_CARD_TEXT(card, 2, "fixfeat");
6875 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6876 features &= ~NETIF_F_IP_CSUM;
6877 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6878 features &= ~NETIF_F_IPV6_CSUM;
6879 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6880 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6881 features &= ~NETIF_F_RXCSUM;
6882 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6883 features &= ~NETIF_F_TSO;
6884 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6885 features &= ~NETIF_F_TSO6;
6887 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6890 EXPORT_SYMBOL_GPL(qeth_fix_features);
6892 netdev_features_t qeth_features_check(struct sk_buff *skb,
6893 struct net_device *dev,
6894 netdev_features_t features)
6896 struct qeth_card *card = dev->ml_priv;
6898 /* Traffic with local next-hop is not eligible for some offloads: */
6899 if (skb->ip_summed == CHECKSUM_PARTIAL &&
6900 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
6901 netdev_features_t restricted = 0;
6903 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
6904 restricted |= NETIF_F_ALL_TSO;
6906 switch (vlan_get_protocol(skb)) {
6907 case htons(ETH_P_IP):
6908 if (!card->info.has_lp2lp_cso_v4)
6909 restricted |= NETIF_F_IP_CSUM;
6911 if (restricted && qeth_next_hop_is_local_v4(card, skb))
6912 features &= ~restricted;
6914 case htons(ETH_P_IPV6):
6915 if (!card->info.has_lp2lp_cso_v6)
6916 restricted |= NETIF_F_IPV6_CSUM;
6918 if (restricted && qeth_next_hop_is_local_v6(card, skb))
6919 features &= ~restricted;
6926 /* GSO segmentation builds skbs with
6927 * a (small) linear part for the headers, and
6928 * page frags for the data.
6929 * Compared to a linear skb, the header-only part consumes an
6930 * additional buffer element. This reduces buffer utilization, and
6931 * hurts throughput. So compress small segments into one element.
6933 if (netif_needs_gso(skb, features)) {
6934 /* match skb_segment(): */
6935 unsigned int doffset = skb->data - skb_mac_header(skb);
6936 unsigned int hsize = skb_shinfo(skb)->gso_size;
6937 unsigned int hroom = skb_headroom(skb);
6939 /* linearize only if resulting skb allocations are order-0: */
6940 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6941 features &= ~NETIF_F_SG;
6944 return vlan_features_check(skb, features);
6946 EXPORT_SYMBOL_GPL(qeth_features_check);
6948 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6950 struct qeth_card *card = dev->ml_priv;
6951 struct qeth_qdio_out_q *queue;
6954 QETH_CARD_TEXT(card, 5, "getstat");
6956 stats->rx_packets = card->stats.rx_packets;
6957 stats->rx_bytes = card->stats.rx_bytes;
6958 stats->rx_errors = card->stats.rx_length_errors +
6959 card->stats.rx_frame_errors +
6960 card->stats.rx_fifo_errors;
6961 stats->rx_dropped = card->stats.rx_dropped_nomem +
6962 card->stats.rx_dropped_notsupp +
6963 card->stats.rx_dropped_runt;
6964 stats->multicast = card->stats.rx_multicast;
6965 stats->rx_length_errors = card->stats.rx_length_errors;
6966 stats->rx_frame_errors = card->stats.rx_frame_errors;
6967 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
6969 for (i = 0; i < card->qdio.no_out_queues; i++) {
6970 queue = card->qdio.out_qs[i];
6972 stats->tx_packets += queue->stats.tx_packets;
6973 stats->tx_bytes += queue->stats.tx_bytes;
6974 stats->tx_errors += queue->stats.tx_errors;
6975 stats->tx_dropped += queue->stats.tx_dropped;
6978 EXPORT_SYMBOL_GPL(qeth_get_stats64);
6980 #define TC_IQD_UCAST 0
6981 static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
6982 unsigned int ucast_txqs)
6986 /* IQD requires mcast traffic to be placed on a dedicated queue, and
6987 * qeth_iqd_select_queue() deals with this.
6988 * For unicast traffic, we defer the queue selection to the stack.
6989 * By installing a trivial prio map that spans over only the unicast
6990 * queues, we can encourage the stack to spread the ucast traffic evenly
6991 * without selecting the mcast queue.
6994 /* One traffic class, spanning over all active ucast queues: */
6995 netdev_set_num_tc(dev, 1);
6996 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
6997 QETH_IQD_MIN_UCAST_TXQ);
6999 /* Map all priorities to this traffic class: */
7000 for (prio = 0; prio <= TC_BITMASK; prio++)
7001 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7004 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7006 struct net_device *dev = card->dev;
7009 /* Per netif_setup_tc(), adjust the mapping first: */
7011 qeth_iqd_set_prio_tc_map(dev, count - 1);
7013 rc = netif_set_real_num_tx_queues(dev, count);
7015 if (rc && IS_IQD(card))
7016 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7020 EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
7022 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7023 u8 cast_type, struct net_device *sb_dev)
7027 if (cast_type != RTN_UNICAST)
7028 return QETH_IQD_MCAST_TXQ;
7029 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7030 return QETH_IQD_MIN_UCAST_TXQ;
7032 txq = netdev_pick_tx(dev, skb, sb_dev);
7033 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
7035 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7037 u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
7038 struct net_device *sb_dev)
7040 struct qeth_card *card = dev->ml_priv;
7042 if (qeth_uses_tx_prio_queueing(card))
7043 return qeth_get_priority_queue(card, skb);
7045 return netdev_pick_tx(dev, skb, sb_dev);
7047 EXPORT_SYMBOL_GPL(qeth_osa_select_queue);
7049 int qeth_open(struct net_device *dev)
7051 struct qeth_card *card = dev->ml_priv;
7052 struct qeth_qdio_out_q *queue;
7055 QETH_CARD_TEXT(card, 4, "qethopen");
7057 card->data.state = CH_STATE_UP;
7058 netif_tx_start_all_queues(dev);
7061 qeth_for_each_output_queue(card, queue, i) {
7062 netif_napi_add_tx(dev, &queue->napi, qeth_tx_poll);
7063 napi_enable(&queue->napi);
7064 napi_schedule(&queue->napi);
7067 napi_enable(&card->napi);
7068 napi_schedule(&card->napi);
7069 /* kick-start the NAPI softirq: */
7074 EXPORT_SYMBOL_GPL(qeth_open);
7076 int qeth_stop(struct net_device *dev)
7078 struct qeth_card *card = dev->ml_priv;
7079 struct qeth_qdio_out_q *queue;
7082 QETH_CARD_TEXT(card, 4, "qethstop");
7084 napi_disable(&card->napi);
7085 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7086 qdio_stop_irq(CARD_DDEV(card));
7088 /* Quiesce the NAPI instances: */
7089 qeth_for_each_output_queue(card, queue, i)
7090 napi_disable(&queue->napi);
7092 /* Stop .ndo_start_xmit, might still access queue->napi. */
7093 netif_tx_disable(dev);
7095 qeth_for_each_output_queue(card, queue, i) {
7096 del_timer_sync(&queue->timer);
7097 /* Queues may get re-allocated, so remove the NAPIs. */
7098 netif_napi_del(&queue->napi);
7103 EXPORT_SYMBOL_GPL(qeth_stop);
7105 static int __init qeth_core_init(void)
7109 pr_info("loading core functions\n");
7111 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7113 rc = qeth_register_dbf_views();
7116 qeth_core_root_dev = root_device_register("qeth");
7117 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
7120 qeth_core_header_cache =
7121 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7122 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7124 if (!qeth_core_header_cache) {
7128 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7129 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7130 if (!qeth_qdio_outbuf_cache) {
7135 qeth_qaob_cache = kmem_cache_create("qeth_qaob",
7136 sizeof(struct qaob),
7137 sizeof(struct qaob),
7139 if (!qeth_qaob_cache) {
7144 rc = ccw_driver_register(&qeth_ccw_driver);
7147 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7154 ccw_driver_unregister(&qeth_ccw_driver);
7156 kmem_cache_destroy(qeth_qaob_cache);
7158 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7160 kmem_cache_destroy(qeth_core_header_cache);
7162 root_device_unregister(qeth_core_root_dev);
7164 qeth_unregister_dbf_views();
7166 debugfs_remove_recursive(qeth_debugfs_root);
7167 pr_err("Initializing the qeth device driver failed\n");
7171 static void __exit qeth_core_exit(void)
7173 qeth_clear_dbf_list();
7174 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7175 ccw_driver_unregister(&qeth_ccw_driver);
7176 kmem_cache_destroy(qeth_qaob_cache);
7177 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7178 kmem_cache_destroy(qeth_core_header_cache);
7179 root_device_unregister(qeth_core_root_dev);
7180 qeth_unregister_dbf_views();
7181 debugfs_remove_recursive(qeth_debugfs_root);
7182 pr_info("core functions removed\n");
7185 module_init(qeth_core_init);
7186 module_exit(qeth_core_exit);
7187 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7188 MODULE_DESCRIPTION("qeth core functions");
7189 MODULE_LICENSE("GPL");