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[CPUFREQ] checkpatch cleanups for e_powersaver
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / s390 / net / qeth_l2_main.c
blob07ab8a5c1c46c5c5df51fc5d0d74d8a0ea3626ec
1 /*
2 * drivers/s390/net/qeth_l2_main.c
3 *
4 * Copyright IBM Corp. 2007
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
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/etherdevice.h>
20 #include <linux/mii.h>
21 #include <linux/ip.h>
22
23 #include "qeth_core.h"
24 #include "qeth_core_offl.h"
25
26 static int qeth_l2_set_offline(struct ccwgroup_device *);
27 static int qeth_l2_stop(struct net_device *);
28 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
29 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
30 enum qeth_ipa_cmds,
31 int (*reply_cb) (struct qeth_card *,
32 struct qeth_reply*,
33 unsigned long));
34 static void qeth_l2_set_multicast_list(struct net_device *);
35 static int qeth_l2_recover(void *);
36
37 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
38 {
39 struct qeth_card *card = dev->ml_priv;
40 struct mii_ioctl_data *mii_data;
41 int rc = 0;
42
43 if (!card)
44 return -ENODEV;
45
46 if ((card->state != CARD_STATE_UP) &&
47 (card->state != CARD_STATE_SOFTSETUP))
48 return -ENODEV;
49
50 if (card->info.type == QETH_CARD_TYPE_OSN)
51 return -EPERM;
52
53 switch (cmd) {
54 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
55 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
56 break;
57 case SIOC_QETH_GET_CARD_TYPE:
58 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
59 !card->info.guestlan)
60 return 1;
61 return 0;
62 break;
63 case SIOCGMIIPHY:
64 mii_data = if_mii(rq);
65 mii_data->phy_id = 0;
66 break;
67 case SIOCGMIIREG:
68 mii_data = if_mii(rq);
69 if (mii_data->phy_id != 0)
70 rc = -EINVAL;
71 else
72 mii_data->val_out = qeth_mdio_read(dev,
73 mii_data->phy_id, mii_data->reg_num);
74 break;
75 default:
76 rc = -EOPNOTSUPP;
77 }
78 if (rc)
79 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
80 return rc;
81 }
82
83 static int qeth_l2_verify_dev(struct net_device *dev)
84 {
85 struct qeth_card *card;
86 unsigned long flags;
87 int rc = 0;
88
89 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
90 list_for_each_entry(card, &qeth_core_card_list.list, list) {
91 if (card->dev == dev) {
92 rc = QETH_REAL_CARD;
93 break;
94 }
95 }
96 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
97
98 return rc;
99 }
100
101 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
102 {
103 struct qeth_card *card;
104 struct net_device *ndev;
105 __u16 temp_dev_no;
106 unsigned long flags;
107 struct ccw_dev_id read_devid;
108
109 ndev = NULL;
110 memcpy(&temp_dev_no, read_dev_no, 2);
111 read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
112 list_for_each_entry(card, &qeth_core_card_list.list, list) {
113 ccw_device_get_id(CARD_RDEV(card), &read_devid);
114 if (read_devid.devno == temp_dev_no) {
115 ndev = card->dev;
116 break;
117 }
118 }
119 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
120 return ndev;
121 }
122
123 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
124 struct qeth_reply *reply,
125 unsigned long data)
126 {
127 struct qeth_ipa_cmd *cmd;
128 __u8 *mac;
129
130 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
131 cmd = (struct qeth_ipa_cmd *) data;
132 mac = &cmd->data.setdelmac.mac[0];
133 /* MAC already registered, needed in couple/uncouple case */
134 if (cmd->hdr.return_code == 0x2005) {
135 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
136 mac, QETH_CARD_IFNAME(card));
137 cmd->hdr.return_code = 0;
138 }
139 if (cmd->hdr.return_code)
140 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
141 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
142 return 0;
143 }
144
145 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
146 {
147 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
148 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
149 qeth_l2_send_setgroupmac_cb);
150 }
151
152 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
153 struct qeth_reply *reply,
154 unsigned long data)
155 {
156 struct qeth_ipa_cmd *cmd;
157 __u8 *mac;
158
159 QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
160 cmd = (struct qeth_ipa_cmd *) data;
161 mac = &cmd->data.setdelmac.mac[0];
162 if (cmd->hdr.return_code)
163 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
164 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
165 return 0;
166 }
167
168 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
169 {
170 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
171 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
172 qeth_l2_send_delgroupmac_cb);
173 }
174
175 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
176 {
177 struct qeth_mc_mac *mc;
178 int rc;
179
180 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
181
182 if (!mc)
183 return;
184
185 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
186 mc->mc_addrlen = OSA_ADDR_LEN;
187 mc->is_vmac = vmac;
188
189 if (vmac) {
190 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
191 NULL);
192 } else {
193 rc = qeth_l2_send_setgroupmac(card, mac);
194 }
195
196 if (!rc)
197 list_add_tail(&mc->list, &card->mc_list);
198 else
199 kfree(mc);
200 }
201
202 static void qeth_l2_del_all_mc(struct qeth_card *card)
203 {
204 struct qeth_mc_mac *mc, *tmp;
205
206 spin_lock_bh(&card->mclock);
207 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
208 if (mc->is_vmac)
209 qeth_l2_send_setdelmac(card, mc->mc_addr,
210 IPA_CMD_DELVMAC, NULL);
211 else
212 qeth_l2_send_delgroupmac(card, mc->mc_addr);
213 list_del(&mc->list);
214 kfree(mc);
215 }
216 spin_unlock_bh(&card->mclock);
217 }
218
219 static void qeth_l2_get_packet_type(struct qeth_card *card,
220 struct qeth_hdr *hdr, struct sk_buff *skb)
221 {
222 __u16 hdr_mac;
223
224 if (!memcmp(skb->data + QETH_HEADER_SIZE,
225 skb->dev->broadcast, 6)) {
226 /* broadcast? */
227 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
228 return;
229 }
230 hdr_mac = *((__u16 *)skb->data);
231 /* tr multicast? */
232 switch (card->info.link_type) {
233 case QETH_LINK_TYPE_HSTR:
234 case QETH_LINK_TYPE_LANE_TR:
235 if ((hdr_mac == QETH_TR_MAC_NC) ||
236 (hdr_mac == QETH_TR_MAC_C))
237 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
238 else
239 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
240 break;
241 /* eth or so multicast? */
242 default:
243 if ((hdr_mac == QETH_ETH_MAC_V4) ||
244 (hdr_mac == QETH_ETH_MAC_V6))
245 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
246 else
247 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
248 }
249 }
250
251 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
252 struct sk_buff *skb, int ipv, int cast_type)
253 {
254 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
255
256 memset(hdr, 0, sizeof(struct qeth_hdr));
257 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
258
259 /* set byte byte 3 to casting flags */
260 if (cast_type == RTN_MULTICAST)
261 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
262 else if (cast_type == RTN_BROADCAST)
263 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
264 else
265 qeth_l2_get_packet_type(card, hdr, skb);
266
267 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
268 /* VSWITCH relies on the VLAN
269 * information to be present in
270 * the QDIO header */
271 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
272 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
273 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
274 }
275 }
276
277 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
278 struct qeth_reply *reply, unsigned long data)
279 {
280 struct qeth_ipa_cmd *cmd;
281
282 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
283 cmd = (struct qeth_ipa_cmd *) data;
284 if (cmd->hdr.return_code) {
285 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
286 "Continuing\n", cmd->data.setdelvlan.vlan_id,
287 QETH_CARD_IFNAME(card), cmd->hdr.return_code);
288 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
289 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
290 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
291 }
292 return 0;
293 }
294
295 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
296 enum qeth_ipa_cmds ipacmd)
297 {
298 struct qeth_ipa_cmd *cmd;
299 struct qeth_cmd_buffer *iob;
300
301 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
302 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
303 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
304 cmd->data.setdelvlan.vlan_id = i;
305 return qeth_send_ipa_cmd(card, iob,
306 qeth_l2_send_setdelvlan_cb, NULL);
307 }
308
309 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
310 {
311 struct qeth_vlan_vid *id;
312 QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
313 spin_lock_bh(&card->vlanlock);
314 list_for_each_entry(id, &card->vid_list, list) {
315 if (clear)
316 qeth_l2_send_setdelvlan(card, id->vid,
317 IPA_CMD_DELVLAN);
318 else
319 qeth_l2_send_setdelvlan(card, id->vid,
320 IPA_CMD_SETVLAN);
321 }
322 spin_unlock_bh(&card->vlanlock);
323 }
324
325 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
326 {
327 struct qeth_card *card = dev->ml_priv;
328 struct qeth_vlan_vid *id;
329
330 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
331 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
332 if (id) {
333 id->vid = vid;
334 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
335 spin_lock_bh(&card->vlanlock);
336 list_add_tail(&id->list, &card->vid_list);
337 spin_unlock_bh(&card->vlanlock);
338 }
339 }
340
341 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
342 {
343 struct qeth_vlan_vid *id, *tmpid = NULL;
344 struct qeth_card *card = dev->ml_priv;
345
346 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
347 spin_lock_bh(&card->vlanlock);
348 list_for_each_entry(id, &card->vid_list, list) {
349 if (id->vid == vid) {
350 list_del(&id->list);
351 tmpid = id;
352 break;
353 }
354 }
355 spin_unlock_bh(&card->vlanlock);
356 if (tmpid) {
357 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
358 kfree(tmpid);
359 }
360 qeth_l2_set_multicast_list(card->dev);
361 }
362
363 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
364 {
365 int rc = 0;
366
367 QETH_DBF_TEXT(SETUP , 2, "stopcard");
368 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
369
370 qeth_set_allowed_threads(card, 0, 1);
371 if (card->read.state == CH_STATE_UP &&
372 card->write.state == CH_STATE_UP &&
373 (card->state == CARD_STATE_UP)) {
374 if (recovery_mode &&
375 card->info.type != QETH_CARD_TYPE_OSN) {
376 qeth_l2_stop(card->dev);
377 } else {
378 rtnl_lock();
379 dev_close(card->dev);
380 rtnl_unlock();
381 }
382 if (!card->use_hard_stop) {
383 __u8 *mac = &card->dev->dev_addr[0];
384 rc = qeth_l2_send_delmac(card, mac);
385 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
386 }
387 card->state = CARD_STATE_SOFTSETUP;
388 }
389 if (card->state == CARD_STATE_SOFTSETUP) {
390 qeth_l2_process_vlans(card, 1);
391 if (!card->use_hard_stop)
392 qeth_l2_del_all_mc(card);
393 qeth_clear_ipacmd_list(card);
394 card->state = CARD_STATE_HARDSETUP;
395 }
396 if (card->state == CARD_STATE_HARDSETUP) {
397 qeth_qdio_clear_card(card, 0);
398 qeth_clear_qdio_buffers(card);
399 qeth_clear_working_pool_list(card);
400 card->state = CARD_STATE_DOWN;
401 }
402 if (card->state == CARD_STATE_DOWN) {
403 qeth_clear_cmd_buffers(&card->read);
404 qeth_clear_cmd_buffers(&card->write);
405 }
406 card->use_hard_stop = 0;
407 return rc;
408 }
409
410 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
411 struct qeth_qdio_buffer *buf, int index)
412 {
413 struct qdio_buffer_element *element;
414 struct sk_buff *skb;
415 struct qeth_hdr *hdr;
416 int offset;
417 unsigned int len;
418
419 /* get first element of current buffer */
420 element = (struct qdio_buffer_element *)&buf->buffer->element[0];
421 offset = 0;
422 if (card->options.performance_stats)
423 card->perf_stats.bufs_rec++;
424 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
425 &offset, &hdr))) {
426 skb->dev = card->dev;
427 /* is device UP ? */
428 if (!(card->dev->flags & IFF_UP)) {
429 dev_kfree_skb_any(skb);
430 continue;
431 }
432
433 switch (hdr->hdr.l2.id) {
434 case QETH_HEADER_TYPE_LAYER2:
435 skb->pkt_type = PACKET_HOST;
436 skb->protocol = eth_type_trans(skb, skb->dev);
437 if (card->options.checksum_type == NO_CHECKSUMMING)
438 skb->ip_summed = CHECKSUM_UNNECESSARY;
439 else
440 skb->ip_summed = CHECKSUM_NONE;
441 if (skb->protocol == htons(ETH_P_802_2))
442 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
443 len = skb->len;
444 netif_rx(skb);
445 break;
446 case QETH_HEADER_TYPE_OSN:
447 if (card->info.type == QETH_CARD_TYPE_OSN) {
448 skb_push(skb, sizeof(struct qeth_hdr));
449 skb_copy_to_linear_data(skb, hdr,
450 sizeof(struct qeth_hdr));
451 len = skb->len;
452 card->osn_info.data_cb(skb);
453 break;
454 }
455 /* else unknown */
456 default:
457 dev_kfree_skb_any(skb);
458 QETH_DBF_TEXT(TRACE, 3, "inbunkno");
459 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
460 continue;
461 }
462 card->dev->last_rx = jiffies;
463 card->stats.rx_packets++;
464 card->stats.rx_bytes += len;
465 }
466 }
467
468 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
469 enum qeth_ipa_cmds ipacmd,
470 int (*reply_cb) (struct qeth_card *,
471 struct qeth_reply*,
472 unsigned long))
473 {
474 struct qeth_ipa_cmd *cmd;
475 struct qeth_cmd_buffer *iob;
476
477 QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
478 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
479 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
480 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
481 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
482 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
483 }
484
485 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
486 struct qeth_reply *reply,
487 unsigned long data)
488 {
489 struct qeth_ipa_cmd *cmd;
490
491 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
492 cmd = (struct qeth_ipa_cmd *) data;
493 if (cmd->hdr.return_code) {
494 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
495 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
496 cmd->hdr.return_code = -EIO;
497 } else {
498 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
499 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
500 OSA_ADDR_LEN);
501 dev_info(&card->gdev->dev,
502 "MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
503 "successfully registered on device %s\n",
504 card->dev->dev_addr[0], card->dev->dev_addr[1],
505 card->dev->dev_addr[2], card->dev->dev_addr[3],
506 card->dev->dev_addr[4], card->dev->dev_addr[5],
507 card->dev->name);
508 }
509 return 0;
510 }
511
512 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
513 {
514 QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
515 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
516 qeth_l2_send_setmac_cb);
517 }
518
519 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
520 struct qeth_reply *reply,
521 unsigned long data)
522 {
523 struct qeth_ipa_cmd *cmd;
524
525 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
526 cmd = (struct qeth_ipa_cmd *) data;
527 if (cmd->hdr.return_code) {
528 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
529 cmd->hdr.return_code = -EIO;
530 return 0;
531 }
532 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
533
534 return 0;
535 }
536
537 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
538 {
539 QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
540 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
541 return 0;
542 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
543 qeth_l2_send_delmac_cb);
544 }
545
546 static int qeth_l2_request_initial_mac(struct qeth_card *card)
547 {
548 int rc = 0;
549 char vendor_pre[] = {0x02, 0x00, 0x00};
550
551 QETH_DBF_TEXT(SETUP, 2, "doL2init");
552 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
553
554 rc = qeth_query_setadapterparms(card);
555 if (rc) {
556 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
557 "device %s: x%x\n", CARD_BUS_ID(card), rc);
558 }
559
560 if ((card->info.type == QETH_CARD_TYPE_IQD) ||
561 (card->info.guestlan)) {
562 rc = qeth_setadpparms_change_macaddr(card);
563 if (rc) {
564 QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
565 "device %s: x%x\n", CARD_BUS_ID(card), rc);
566 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
567 return rc;
568 }
569 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
570 } else {
571 random_ether_addr(card->dev->dev_addr);
572 memcpy(card->dev->dev_addr, vendor_pre, 3);
573 }
574 return 0;
575 }
576
577 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
578 {
579 struct sockaddr *addr = p;
580 struct qeth_card *card = dev->ml_priv;
581 int rc = 0;
582
583 QETH_DBF_TEXT(TRACE, 3, "setmac");
584
585 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
586 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
587 return -EOPNOTSUPP;
588 }
589
590 if (card->info.type == QETH_CARD_TYPE_OSN) {
591 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
592 return -EOPNOTSUPP;
593 }
594 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
595 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
596 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
597 if (!rc)
598 rc = qeth_l2_send_setmac(card, addr->sa_data);
599 return rc;
600 }
601
602 static void qeth_l2_set_multicast_list(struct net_device *dev)
603 {
604 struct qeth_card *card = dev->ml_priv;
605 struct dev_addr_list *dm;
606
607 if (card->info.type == QETH_CARD_TYPE_OSN)
608 return ;
609
610 QETH_DBF_TEXT(TRACE, 3, "setmulti");
611 qeth_l2_del_all_mc(card);
612 spin_lock_bh(&card->mclock);
613 for (dm = dev->mc_list; dm; dm = dm->next)
614 qeth_l2_add_mc(card, dm->da_addr, 0);
615
616 for (dm = dev->uc_list; dm; dm = dm->next)
617 qeth_l2_add_mc(card, dm->da_addr, 1);
618
619 spin_unlock_bh(&card->mclock);
620 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
621 return;
622 qeth_setadp_promisc_mode(card);
623 }
624
625 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
626 {
627 int rc;
628 struct qeth_hdr *hdr = NULL;
629 int elements = 0;
630 struct qeth_card *card = dev->ml_priv;
631 struct sk_buff *new_skb = skb;
632 int ipv = qeth_get_ip_version(skb);
633 int cast_type = qeth_get_cast_type(card, skb);
634 struct qeth_qdio_out_q *queue = card->qdio.out_qs
635 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
636 int tx_bytes = skb->len;
637 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
638 struct qeth_eddp_context *ctx = NULL;
639 int data_offset = -1;
640 int elements_needed = 0;
641 int hd_len = 0;
642
643 if ((card->state != CARD_STATE_UP) || !card->lan_online) {
644 card->stats.tx_carrier_errors++;
645 goto tx_drop;
646 }
647
648 if ((card->info.type == QETH_CARD_TYPE_OSN) &&
649 (skb->protocol == htons(ETH_P_IPV6)))
650 goto tx_drop;
651
652 if (card->options.performance_stats) {
653 card->perf_stats.outbound_cnt++;
654 card->perf_stats.outbound_start_time = qeth_get_micros();
655 }
656 netif_stop_queue(dev);
657
658 if (skb_is_gso(skb))
659 large_send = QETH_LARGE_SEND_EDDP;
660
661 if (card->info.type == QETH_CARD_TYPE_OSN)
662 hdr = (struct qeth_hdr *)skb->data;
663 else {
664 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
665 (skb_shinfo(skb)->nr_frags == 0)) {
666 new_skb = skb;
667 data_offset = ETH_HLEN;
668 hd_len = ETH_HLEN;
669 hdr = kmem_cache_alloc(qeth_core_header_cache,
670 GFP_ATOMIC);
671 if (!hdr)
672 goto tx_drop;
673 elements_needed++;
674 skb_reset_mac_header(new_skb);
675 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
676 hdr->hdr.l2.pkt_length = new_skb->len;
677 memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
678 skb_mac_header(new_skb), ETH_HLEN);
679 } else {
680 /* create a clone with writeable headroom */
681 new_skb = skb_realloc_headroom(skb,
682 sizeof(struct qeth_hdr));
683 if (!new_skb)
684 goto tx_drop;
685 hdr = (struct qeth_hdr *)skb_push(new_skb,
686 sizeof(struct qeth_hdr));
687 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
688 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
689 }
690 }
691
692 if (large_send == QETH_LARGE_SEND_EDDP) {
693 ctx = qeth_eddp_create_context(card, new_skb, hdr,
694 skb->sk->sk_protocol);
695 if (ctx == NULL) {
696 QETH_DBF_MESSAGE(2, "could not create eddp context\n");
697 goto tx_drop;
698 }
699 } else {
700 elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
701 elements_needed);
702 if (!elements) {
703 if (data_offset >= 0)
704 kmem_cache_free(qeth_core_header_cache, hdr);
705 goto tx_drop;
706 }
707 }
708
709 if ((large_send == QETH_LARGE_SEND_NO) &&
710 (skb->ip_summed == CHECKSUM_PARTIAL))
711 qeth_tx_csum(new_skb);
712
713 if (card->info.type != QETH_CARD_TYPE_IQD)
714 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
715 elements, ctx);
716 else
717 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
718 elements, ctx, data_offset, hd_len);
719 if (!rc) {
720 card->stats.tx_packets++;
721 card->stats.tx_bytes += tx_bytes;
722 if (new_skb != skb)
723 dev_kfree_skb_any(skb);
724 if (card->options.performance_stats) {
725 if (large_send != QETH_LARGE_SEND_NO) {
726 card->perf_stats.large_send_bytes += tx_bytes;
727 card->perf_stats.large_send_cnt++;
728 }
729 if (skb_shinfo(new_skb)->nr_frags > 0) {
730 card->perf_stats.sg_skbs_sent++;
731 /* nr_frags + skb->data */
732 card->perf_stats.sg_frags_sent +=
733 skb_shinfo(new_skb)->nr_frags + 1;
734 }
735 }
736
737 if (ctx != NULL) {
738 qeth_eddp_put_context(ctx);
739 dev_kfree_skb_any(new_skb);
740 }
741 } else {
742 if (ctx != NULL)
743 qeth_eddp_put_context(ctx);
744
745 if (data_offset >= 0)
746 kmem_cache_free(qeth_core_header_cache, hdr);
747
748 if (rc == -EBUSY) {
749 if (new_skb != skb)
750 dev_kfree_skb_any(new_skb);
751 return NETDEV_TX_BUSY;
752 } else
753 goto tx_drop;
754 }
755
756 netif_wake_queue(dev);
757 if (card->options.performance_stats)
758 card->perf_stats.outbound_time += qeth_get_micros() -
759 card->perf_stats.outbound_start_time;
760 return rc;
761
762 tx_drop:
763 card->stats.tx_dropped++;
764 card->stats.tx_errors++;
765 if ((new_skb != skb) && new_skb)
766 dev_kfree_skb_any(new_skb);
767 dev_kfree_skb_any(skb);
768 netif_wake_queue(dev);
769 return NETDEV_TX_OK;
770 }
771
772 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
773 unsigned int qdio_err, unsigned int queue,
774 int first_element, int count, unsigned long card_ptr)
775 {
776 struct net_device *net_dev;
777 struct qeth_card *card;
778 struct qeth_qdio_buffer *buffer;
779 int index;
780 int i;
781
782 card = (struct qeth_card *) card_ptr;
783 net_dev = card->dev;
784 if (card->options.performance_stats) {
785 card->perf_stats.inbound_cnt++;
786 card->perf_stats.inbound_start_time = qeth_get_micros();
787 }
788 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
789 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
790 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
791 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
792 count);
793 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
794 qeth_schedule_recovery(card);
795 return;
796 }
797 for (i = first_element; i < (first_element + count); ++i) {
798 index = i % QDIO_MAX_BUFFERS_PER_Q;
799 buffer = &card->qdio.in_q->bufs[index];
800 if (!(qdio_err &&
801 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
802 qeth_l2_process_inbound_buffer(card, buffer, index);
803 /* clear buffer and give back to hardware */
804 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
805 qeth_queue_input_buffer(card, index);
806 }
807 if (card->options.performance_stats)
808 card->perf_stats.inbound_time += qeth_get_micros() -
809 card->perf_stats.inbound_start_time;
810 }
811
812 static int qeth_l2_open(struct net_device *dev)
813 {
814 struct qeth_card *card = dev->ml_priv;
815
816 QETH_DBF_TEXT(TRACE, 4, "qethopen");
817 if (card->state != CARD_STATE_SOFTSETUP)
818 return -ENODEV;
819
820 if ((card->info.type != QETH_CARD_TYPE_OSN) &&
821 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
822 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
823 return -EPERM;
824 }
825 card->data.state = CH_STATE_UP;
826 card->state = CARD_STATE_UP;
827 netif_start_queue(dev);
828
829 if (!card->lan_online && netif_carrier_ok(dev))
830 netif_carrier_off(dev);
831 return 0;
832 }
833
834
835 static int qeth_l2_stop(struct net_device *dev)
836 {
837 struct qeth_card *card = dev->ml_priv;
838
839 QETH_DBF_TEXT(TRACE, 4, "qethstop");
840 netif_tx_disable(dev);
841 if (card->state == CARD_STATE_UP)
842 card->state = CARD_STATE_SOFTSETUP;
843 return 0;
844 }
845
846 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
847 {
848 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
849
850 INIT_LIST_HEAD(&card->vid_list);
851 INIT_LIST_HEAD(&card->mc_list);
852 card->options.layer2 = 1;
853 card->discipline.input_handler = (qdio_handler_t *)
854 qeth_l2_qdio_input_handler;
855 card->discipline.output_handler = (qdio_handler_t *)
856 qeth_qdio_output_handler;
857 card->discipline.recover = qeth_l2_recover;
858 return 0;
859 }
860
861 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
862 {
863 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
864
865 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
866
867 if (cgdev->state == CCWGROUP_ONLINE) {
868 card->use_hard_stop = 1;
869 qeth_l2_set_offline(cgdev);
870 }
871
872 if (card->dev) {
873 unregister_netdev(card->dev);
874 card->dev = NULL;
875 }
876
877 qeth_l2_del_all_mc(card);
878 return;
879 }
880
881 static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data)
882 {
883 struct qeth_card *card = dev->ml_priv;
884
885 if (data) {
886 if (card->options.large_send == QETH_LARGE_SEND_NO) {
887 card->options.large_send = QETH_LARGE_SEND_EDDP;
888 dev->features |= NETIF_F_TSO;
889 }
890 } else {
891 dev->features &= ~NETIF_F_TSO;
892 card->options.large_send = QETH_LARGE_SEND_NO;
893 }
894 return 0;
895 }
896
897 static struct ethtool_ops qeth_l2_ethtool_ops = {
898 .get_link = ethtool_op_get_link,
899 .get_tx_csum = ethtool_op_get_tx_csum,
900 .set_tx_csum = ethtool_op_set_tx_hw_csum,
901 .get_sg = ethtool_op_get_sg,
902 .set_sg = ethtool_op_set_sg,
903 .get_tso = ethtool_op_get_tso,
904 .set_tso = qeth_l2_ethtool_set_tso,
905 .get_strings = qeth_core_get_strings,
906 .get_ethtool_stats = qeth_core_get_ethtool_stats,
907 .get_stats_count = qeth_core_get_stats_count,
908 .get_drvinfo = qeth_core_get_drvinfo,
909 .get_settings = qeth_core_ethtool_get_settings,
910 };
911
912 static struct ethtool_ops qeth_l2_osn_ops = {
913 .get_strings = qeth_core_get_strings,
914 .get_ethtool_stats = qeth_core_get_ethtool_stats,
915 .get_stats_count = qeth_core_get_stats_count,
916 .get_drvinfo = qeth_core_get_drvinfo,
917 };
918
919 static const struct net_device_ops qeth_l2_netdev_ops = {
920 .ndo_open = qeth_l2_open,
921 .ndo_stop = qeth_l2_stop,
922 .ndo_get_stats = qeth_get_stats,
923 .ndo_start_xmit = qeth_l2_hard_start_xmit,
924 .ndo_validate_addr = eth_validate_addr,
925 .ndo_set_multicast_list = qeth_l2_set_multicast_list,
926 .ndo_do_ioctl = qeth_l2_do_ioctl,
927 .ndo_set_mac_address = qeth_l2_set_mac_address,
928 .ndo_change_mtu = qeth_change_mtu,
929 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
930 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
931 .ndo_tx_timeout = qeth_tx_timeout,
932 };
933
934 static int qeth_l2_setup_netdev(struct qeth_card *card)
935 {
936 switch (card->info.type) {
937 case QETH_CARD_TYPE_OSAE:
938 card->dev = alloc_etherdev(0);
939 break;
940 case QETH_CARD_TYPE_IQD:
941 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
942 break;
943 case QETH_CARD_TYPE_OSN:
944 card->dev = alloc_netdev(0, "osn%d", ether_setup);
945 card->dev->flags |= IFF_NOARP;
946 break;
947 default:
948 card->dev = alloc_etherdev(0);
949 }
950
951 if (!card->dev)
952 return -ENODEV;
953
954 card->dev->ml_priv = card;
955 card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
956 card->dev->mtu = card->info.initial_mtu;
957 card->dev->netdev_ops = &qeth_l2_netdev_ops;
958 if (card->info.type != QETH_CARD_TYPE_OSN)
959 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
960 else
961 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
962 card->dev->features |= NETIF_F_HW_VLAN_FILTER;
963 card->info.broadcast_capable = 1;
964 qeth_l2_request_initial_mac(card);
965 SET_NETDEV_DEV(card->dev, &card->gdev->dev);
966 return register_netdev(card->dev);
967 }
968
969 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
970 {
971 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
972 int rc = 0;
973 enum qeth_card_states recover_flag;
974
975 BUG_ON(!card);
976 QETH_DBF_TEXT(SETUP, 2, "setonlin");
977 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
978
979 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
980 recover_flag = card->state;
981 rc = ccw_device_set_online(CARD_RDEV(card));
982 if (rc) {
983 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
984 return -EIO;
985 }
986 rc = ccw_device_set_online(CARD_WDEV(card));
987 if (rc) {
988 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
989 return -EIO;
990 }
991 rc = ccw_device_set_online(CARD_DDEV(card));
992 if (rc) {
993 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
994 return -EIO;
995 }
996
997 rc = qeth_core_hardsetup_card(card);
998 if (rc) {
999 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1000 goto out_remove;
1001 }
1002
1003 if (!card->dev && qeth_l2_setup_netdev(card))
1004 goto out_remove;
1005
1006 if (card->info.type != QETH_CARD_TYPE_OSN)
1007 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1008
1009 card->state = CARD_STATE_HARDSETUP;
1010 qeth_print_status_message(card);
1011
1012 /* softsetup */
1013 QETH_DBF_TEXT(SETUP, 2, "softsetp");
1014
1015 rc = qeth_send_startlan(card);
1016 if (rc) {
1017 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1018 if (rc == 0xe080) {
1019 dev_warn(&card->gdev->dev,
1020 "The LAN is offline\n");
1021 card->lan_online = 0;
1022 }
1023 return rc;
1024 } else
1025 card->lan_online = 1;
1026
1027 if (card->info.type != QETH_CARD_TYPE_OSN) {
1028 qeth_set_large_send(card, card->options.large_send);
1029 qeth_l2_process_vlans(card, 0);
1030 }
1031
1032 netif_tx_disable(card->dev);
1033
1034 rc = qeth_init_qdio_queues(card);
1035 if (rc) {
1036 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1037 goto out_remove;
1038 }
1039 card->state = CARD_STATE_SOFTSETUP;
1040 netif_carrier_on(card->dev);
1041
1042 qeth_set_allowed_threads(card, 0xffffffff, 0);
1043 if (recover_flag == CARD_STATE_RECOVER) {
1044 if (recovery_mode &&
1045 card->info.type != QETH_CARD_TYPE_OSN) {
1046 qeth_l2_open(card->dev);
1047 } else {
1048 rtnl_lock();
1049 dev_open(card->dev);
1050 rtnl_unlock();
1051 }
1052 /* this also sets saved unicast addresses */
1053 qeth_l2_set_multicast_list(card->dev);
1054 }
1055 /* let user_space know that device is online */
1056 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1057 return 0;
1058 out_remove:
1059 card->use_hard_stop = 1;
1060 qeth_l2_stop_card(card, 0);
1061 ccw_device_set_offline(CARD_DDEV(card));
1062 ccw_device_set_offline(CARD_WDEV(card));
1063 ccw_device_set_offline(CARD_RDEV(card));
1064 if (recover_flag == CARD_STATE_RECOVER)
1065 card->state = CARD_STATE_RECOVER;
1066 else
1067 card->state = CARD_STATE_DOWN;
1068 return -ENODEV;
1069 }
1070
1071 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1072 {
1073 return __qeth_l2_set_online(gdev, 0);
1074 }
1075
1076 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1077 int recovery_mode)
1078 {
1079 struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1080 int rc = 0, rc2 = 0, rc3 = 0;
1081 enum qeth_card_states recover_flag;
1082
1083 QETH_DBF_TEXT(SETUP, 3, "setoffl");
1084 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1085
1086 if (card->dev && netif_carrier_ok(card->dev))
1087 netif_carrier_off(card->dev);
1088 recover_flag = card->state;
1089 qeth_l2_stop_card(card, recovery_mode);
1090 rc = ccw_device_set_offline(CARD_DDEV(card));
1091 rc2 = ccw_device_set_offline(CARD_WDEV(card));
1092 rc3 = ccw_device_set_offline(CARD_RDEV(card));
1093 if (!rc)
1094 rc = (rc2) ? rc2 : rc3;
1095 if (rc)
1096 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1097 if (recover_flag == CARD_STATE_UP)
1098 card->state = CARD_STATE_RECOVER;
1099 /* let user_space know that device is offline */
1100 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1101 return 0;
1102 }
1103
1104 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1105 {
1106 return __qeth_l2_set_offline(cgdev, 0);
1107 }
1108
1109 static int qeth_l2_recover(void *ptr)
1110 {
1111 struct qeth_card *card;
1112 int rc = 0;
1113
1114 card = (struct qeth_card *) ptr;
1115 QETH_DBF_TEXT(TRACE, 2, "recover1");
1116 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1117 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1118 return 0;
1119 QETH_DBF_TEXT(TRACE, 2, "recover2");
1120 dev_warn(&card->gdev->dev,
1121 "A recovery process has been started for the device\n");
1122 card->use_hard_stop = 1;
1123 __qeth_l2_set_offline(card->gdev, 1);
1124 rc = __qeth_l2_set_online(card->gdev, 1);
1125 /* don't run another scheduled recovery */
1126 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1127 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1128 if (!rc)
1129 dev_info(&card->gdev->dev,
1130 "Device successfully recovered!\n");
1131 else {
1132 if (card->dev) {
1133 rtnl_lock();
1134 dev_close(card->dev);
1135 rtnl_unlock();
1136 }
1137 dev_warn(&card->gdev->dev, "The qeth device driver "
1138 "failed to recover an error on the device\n");
1139 }
1140 return 0;
1141 }
1142
1143 static int __init qeth_l2_init(void)
1144 {
1145 pr_info("register layer 2 discipline\n");
1146 return 0;
1147 }
1148
1149 static void __exit qeth_l2_exit(void)
1150 {
1151 pr_info("unregister layer 2 discipline\n");
1152 }
1153
1154 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1155 {
1156 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1157 qeth_qdio_clear_card(card, 0);
1158 qeth_clear_qdio_buffers(card);
1159 }
1160
1161 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1162 .probe = qeth_l2_probe_device,
1163 .remove = qeth_l2_remove_device,
1164 .set_online = qeth_l2_set_online,
1165 .set_offline = qeth_l2_set_offline,
1166 .shutdown = qeth_l2_shutdown,
1167 };
1168 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1169
1170 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1171 struct qeth_cmd_buffer *iob)
1172 {
1173 unsigned long flags;
1174 int rc = 0;
1175
1176 QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1177
1178 wait_event(card->wait_q,
1179 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1180 qeth_prepare_control_data(card, len, iob);
1181 QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1182 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1183 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1184 (addr_t) iob, 0, 0);
1185 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1186 if (rc) {
1187 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1188 "ccw_device_start rc = %i\n", rc);
1189 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1190 qeth_release_buffer(iob->channel, iob);
1191 atomic_set(&card->write.irq_pending, 0);
1192 wake_up(&card->wait_q);
1193 }
1194 return rc;
1195 }
1196
1197 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1198 struct qeth_cmd_buffer *iob, int data_len)
1199 {
1200 u16 s1, s2;
1201
1202 QETH_DBF_TEXT(TRACE, 4, "osndipa");
1203
1204 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1205 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1206 s2 = (u16)data_len;
1207 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1208 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1209 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1210 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1211 return qeth_osn_send_control_data(card, s1, iob);
1212 }
1213
1214 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1215 {
1216 struct qeth_cmd_buffer *iob;
1217 struct qeth_card *card;
1218 int rc;
1219
1220 QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1221 if (!dev)
1222 return -ENODEV;
1223 card = dev->ml_priv;
1224 if (!card)
1225 return -ENODEV;
1226 if ((card->state != CARD_STATE_UP) &&
1227 (card->state != CARD_STATE_SOFTSETUP))
1228 return -ENODEV;
1229 iob = qeth_wait_for_buffer(&card->write);
1230 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1231 rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1232 return rc;
1233 }
1234 EXPORT_SYMBOL(qeth_osn_assist);
1235
1236 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1237 int (*assist_cb)(struct net_device *, void *),
1238 int (*data_cb)(struct sk_buff *))
1239 {
1240 struct qeth_card *card;
1241
1242 QETH_DBF_TEXT(TRACE, 2, "osnreg");
1243 *dev = qeth_l2_netdev_by_devno(read_dev_no);
1244 if (*dev == NULL)
1245 return -ENODEV;
1246 card = (*dev)->ml_priv;
1247 if (!card)
1248 return -ENODEV;
1249 if ((assist_cb == NULL) || (data_cb == NULL))
1250 return -EINVAL;
1251 card->osn_info.assist_cb = assist_cb;
1252 card->osn_info.data_cb = data_cb;
1253 return 0;
1254 }
1255 EXPORT_SYMBOL(qeth_osn_register);
1256
1257 void qeth_osn_deregister(struct net_device *dev)
1258 {
1259 struct qeth_card *card;
1260
1261 QETH_DBF_TEXT(TRACE, 2, "osndereg");
1262 if (!dev)
1263 return;
1264 card = dev->ml_priv;
1265 if (!card)
1266 return;
1267 card->osn_info.assist_cb = NULL;
1268 card->osn_info.data_cb = NULL;
1269 return;
1270 }
1271 EXPORT_SYMBOL(qeth_osn_deregister);
1272
1273 module_init(qeth_l2_init);
1274 module_exit(qeth_l2_exit);
1275 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1276 MODULE_DESCRIPTION("qeth layer 2 discipline");
1277 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree