1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/ip.h>
18 #include <linux/tcp.h>
19 #include <linux/mii.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <net/iucv/af_iucv.h>
23 #include <net/dsfield.h>
24
25 #include <asm/ebcdic.h>
26 #include <asm/chpid.h>
27 #include <asm/io.h>
28 #include <asm/sysinfo.h>
29 #include <asm/compat.h>
30
31 #include "qeth_core.h"
32
33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
34 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
35 /* N P A M L V H */
36 [QETH_DBF_SETUP] = {"qeth_setup",
37 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
38 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
39 &debug_sprintf_view, NULL},
40 [QETH_DBF_CTRL] = {"qeth_control",
41 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
42 };
43 EXPORT_SYMBOL_GPL(qeth_dbf);
44
45 struct qeth_card_list_struct qeth_core_card_list;
46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
47 struct kmem_cache *qeth_core_header_cache;
48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
49 static struct kmem_cache *qeth_qdio_outbuf_cache;
50
51 static struct device *qeth_core_root_dev;
52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
53 static struct lock_class_key qdio_out_skb_queue_key;
54 static struct mutex qeth_mod_mutex;
55
56 static void qeth_send_control_data_cb(struct qeth_channel *,
57 struct qeth_cmd_buffer *);
58 static int qeth_issue_next_read(struct qeth_card *);
59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
61 static void qeth_free_buffer_pool(struct qeth_card *);
62 static int qeth_qdio_establish(struct qeth_card *);
63 static void qeth_free_qdio_buffers(struct qeth_card *);
64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
65 struct qeth_qdio_out_buffer *buf,
66 enum iucv_tx_notify notification);
67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
69 struct qeth_qdio_out_buffer *buf,
70 enum qeth_qdio_buffer_states newbufstate);
71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
72
73 struct workqueue_struct *qeth_wq;
74 EXPORT_SYMBOL_GPL(qeth_wq);
75
qeth_card_hw_is_reachable(struct qeth_card * card)76 int qeth_card_hw_is_reachable(struct qeth_card *card)
77 {
78 return (card->state == CARD_STATE_SOFTSETUP) ||
79 (card->state == CARD_STATE_UP);
80 }
81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
82
qeth_close_dev_handler(struct work_struct * work)83 static void qeth_close_dev_handler(struct work_struct *work)
84 {
85 struct qeth_card *card;
86
87 card = container_of(work, struct qeth_card, close_dev_work);
88 QETH_CARD_TEXT(card, 2, "cldevhdl");
89 rtnl_lock();
90 dev_close(card->dev);
91 rtnl_unlock();
92 ccwgroup_set_offline(card->gdev);
93 }
94
qeth_close_dev(struct qeth_card * card)95 void qeth_close_dev(struct qeth_card *card)
96 {
97 QETH_CARD_TEXT(card, 2, "cldevsubm");
98 queue_work(qeth_wq, &card->close_dev_work);
99 }
100 EXPORT_SYMBOL_GPL(qeth_close_dev);
101
qeth_get_cardname(struct qeth_card * card)102 static inline const char *qeth_get_cardname(struct qeth_card *card)
103 {
104 if (card->info.guestlan) {
105 switch (card->info.type) {
106 case QETH_CARD_TYPE_OSD:
107 return " Virtual NIC QDIO";
108 case QETH_CARD_TYPE_IQD:
109 return " Virtual NIC Hiper";
110 case QETH_CARD_TYPE_OSM:
111 return " Virtual NIC QDIO - OSM";
112 case QETH_CARD_TYPE_OSX:
113 return " Virtual NIC QDIO - OSX";
114 default:
115 return " unknown";
116 }
117 } else {
118 switch (card->info.type) {
119 case QETH_CARD_TYPE_OSD:
120 return " OSD Express";
121 case QETH_CARD_TYPE_IQD:
122 return " HiperSockets";
123 case QETH_CARD_TYPE_OSN:
124 return " OSN QDIO";
125 case QETH_CARD_TYPE_OSM:
126 return " OSM QDIO";
127 case QETH_CARD_TYPE_OSX:
128 return " OSX QDIO";
129 default:
130 return " unknown";
131 }
132 }
133 return " n/a";
134 }
135
136 /* max length to be returned: 14 */
qeth_get_cardname_short(struct qeth_card * card)137 const char *qeth_get_cardname_short(struct qeth_card *card)
138 {
139 if (card->info.guestlan) {
140 switch (card->info.type) {
141 case QETH_CARD_TYPE_OSD:
142 return "Virt.NIC QDIO";
143 case QETH_CARD_TYPE_IQD:
144 return "Virt.NIC Hiper";
145 case QETH_CARD_TYPE_OSM:
146 return "Virt.NIC OSM";
147 case QETH_CARD_TYPE_OSX:
148 return "Virt.NIC OSX";
149 default:
150 return "unknown";
151 }
152 } else {
153 switch (card->info.type) {
154 case QETH_CARD_TYPE_OSD:
155 switch (card->info.link_type) {
156 case QETH_LINK_TYPE_FAST_ETH:
157 return "OSD_100";
158 case QETH_LINK_TYPE_HSTR:
159 return "HSTR";
160 case QETH_LINK_TYPE_GBIT_ETH:
161 return "OSD_1000";
162 case QETH_LINK_TYPE_10GBIT_ETH:
163 return "OSD_10GIG";
164 case QETH_LINK_TYPE_LANE_ETH100:
165 return "OSD_FE_LANE";
166 case QETH_LINK_TYPE_LANE_TR:
167 return "OSD_TR_LANE";
168 case QETH_LINK_TYPE_LANE_ETH1000:
169 return "OSD_GbE_LANE";
170 case QETH_LINK_TYPE_LANE:
171 return "OSD_ATM_LANE";
172 default:
173 return "OSD_Express";
174 }
175 case QETH_CARD_TYPE_IQD:
176 return "HiperSockets";
177 case QETH_CARD_TYPE_OSN:
178 return "OSN";
179 case QETH_CARD_TYPE_OSM:
180 return "OSM_1000";
181 case QETH_CARD_TYPE_OSX:
182 return "OSX_10GIG";
183 default:
184 return "unknown";
185 }
186 }
187 return "n/a";
188 }
189
qeth_set_recovery_task(struct qeth_card * card)190 void qeth_set_recovery_task(struct qeth_card *card)
191 {
192 card->recovery_task = current;
193 }
194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
195
qeth_clear_recovery_task(struct qeth_card * card)196 void qeth_clear_recovery_task(struct qeth_card *card)
197 {
198 card->recovery_task = NULL;
199 }
200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
201
qeth_is_recovery_task(const struct qeth_card * card)202 static bool qeth_is_recovery_task(const struct qeth_card *card)
203 {
204 return card->recovery_task == current;
205 }
206
qeth_set_allowed_threads(struct qeth_card * card,unsigned long threads,int clear_start_mask)207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
208 int clear_start_mask)
209 {
210 unsigned long flags;
211
212 spin_lock_irqsave(&card->thread_mask_lock, flags);
213 card->thread_allowed_mask = threads;
214 if (clear_start_mask)
215 card->thread_start_mask &= threads;
216 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
217 wake_up(&card->wait_q);
218 }
219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
220
qeth_threads_running(struct qeth_card * card,unsigned long threads)221 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
222 {
223 unsigned long flags;
224 int rc = 0;
225
226 spin_lock_irqsave(&card->thread_mask_lock, flags);
227 rc = (card->thread_running_mask & threads);
228 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
229 return rc;
230 }
231 EXPORT_SYMBOL_GPL(qeth_threads_running);
232
qeth_wait_for_threads(struct qeth_card * card,unsigned long threads)233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
234 {
235 if (qeth_is_recovery_task(card))
236 return 0;
237 return wait_event_interruptible(card->wait_q,
238 qeth_threads_running(card, threads) == 0);
239 }
240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
241
qeth_clear_working_pool_list(struct qeth_card * card)242 void qeth_clear_working_pool_list(struct qeth_card *card)
243 {
244 struct qeth_buffer_pool_entry *pool_entry, *tmp;
245
246 QETH_CARD_TEXT(card, 5, "clwrklst");
247 list_for_each_entry_safe(pool_entry, tmp,
248 &card->qdio.in_buf_pool.entry_list, list){
249 list_del(&pool_entry->list);
250 }
251 }
252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
253
qeth_alloc_buffer_pool(struct qeth_card * card)254 static int qeth_alloc_buffer_pool(struct qeth_card *card)
255 {
256 struct qeth_buffer_pool_entry *pool_entry;
257 void *ptr;
258 int i, j;
259
260 QETH_CARD_TEXT(card, 5, "alocpool");
261 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
262 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
263 if (!pool_entry) {
264 qeth_free_buffer_pool(card);
265 return -ENOMEM;
266 }
267 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
268 ptr = (void *) __get_free_page(GFP_KERNEL);
269 if (!ptr) {
270 while (j > 0)
271 free_page((unsigned long)
272 pool_entry->elements[--j]);
273 kfree(pool_entry);
274 qeth_free_buffer_pool(card);
275 return -ENOMEM;
276 }
277 pool_entry->elements[j] = ptr;
278 }
279 list_add(&pool_entry->init_list,
280 &card->qdio.init_pool.entry_list);
281 }
282 return 0;
283 }
284
qeth_realloc_buffer_pool(struct qeth_card * card,int bufcnt)285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
286 {
287 QETH_CARD_TEXT(card, 2, "realcbp");
288
289 if ((card->state != CARD_STATE_DOWN) &&
290 (card->state != CARD_STATE_RECOVER))
291 return -EPERM;
292
293 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
294 qeth_clear_working_pool_list(card);
295 qeth_free_buffer_pool(card);
296 card->qdio.in_buf_pool.buf_count = bufcnt;
297 card->qdio.init_pool.buf_count = bufcnt;
298 return qeth_alloc_buffer_pool(card);
299 }
300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
301
qeth_free_qdio_queue(struct qeth_qdio_q * q)302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
303 {
304 if (!q)
305 return;
306
307 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
308 kfree(q);
309 }
310
qeth_alloc_qdio_queue(void)311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
312 {
313 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
314 int i;
315
316 if (!q)
317 return NULL;
318
319 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
320 kfree(q);
321 return NULL;
322 }
323
324 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
325 q->bufs[i].buffer = q->qdio_bufs[i];
326
327 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
328 return q;
329 }
330
qeth_cq_init(struct qeth_card * card)331 static inline int qeth_cq_init(struct qeth_card *card)
332 {
333 int rc;
334
335 if (card->options.cq == QETH_CQ_ENABLED) {
336 QETH_DBF_TEXT(SETUP, 2, "cqinit");
337 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
338 QDIO_MAX_BUFFERS_PER_Q);
339 card->qdio.c_q->next_buf_to_init = 127;
340 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
341 card->qdio.no_in_queues - 1, 0,
342 127);
343 if (rc) {
344 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
345 goto out;
346 }
347 }
348 rc = 0;
349 out:
350 return rc;
351 }
352
qeth_alloc_cq(struct qeth_card * card)353 static inline int qeth_alloc_cq(struct qeth_card *card)
354 {
355 int rc;
356
357 if (card->options.cq == QETH_CQ_ENABLED) {
358 int i;
359 struct qdio_outbuf_state *outbuf_states;
360
361 QETH_DBF_TEXT(SETUP, 2, "cqon");
362 card->qdio.c_q = qeth_alloc_qdio_queue();
363 if (!card->qdio.c_q) {
364 rc = -1;
365 goto kmsg_out;
366 }
367 card->qdio.no_in_queues = 2;
368 card->qdio.out_bufstates =
369 kzalloc(card->qdio.no_out_queues *
370 QDIO_MAX_BUFFERS_PER_Q *
371 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
372 outbuf_states = card->qdio.out_bufstates;
373 if (outbuf_states == NULL) {
374 rc = -1;
375 goto free_cq_out;
376 }
377 for (i = 0; i < card->qdio.no_out_queues; ++i) {
378 card->qdio.out_qs[i]->bufstates = outbuf_states;
379 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
380 }
381 } else {
382 QETH_DBF_TEXT(SETUP, 2, "nocq");
383 card->qdio.c_q = NULL;
384 card->qdio.no_in_queues = 1;
385 }
386 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
387 rc = 0;
388 out:
389 return rc;
390 free_cq_out:
391 qeth_free_qdio_queue(card->qdio.c_q);
392 card->qdio.c_q = NULL;
393 kmsg_out:
394 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
395 goto out;
396 }
397
qeth_free_cq(struct qeth_card * card)398 static inline void qeth_free_cq(struct qeth_card *card)
399 {
400 if (card->qdio.c_q) {
401 --card->qdio.no_in_queues;
402 qeth_free_qdio_queue(card->qdio.c_q);
403 card->qdio.c_q = NULL;
404 }
405 kfree(card->qdio.out_bufstates);
406 card->qdio.out_bufstates = NULL;
407 }
408
qeth_compute_cq_notification(int sbalf15,int delayed)409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
410 int delayed) {
411 enum iucv_tx_notify n;
412
413 switch (sbalf15) {
414 case 0:
415 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
416 break;
417 case 4:
418 case 16:
419 case 17:
420 case 18:
421 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
422 TX_NOTIFY_UNREACHABLE;
423 break;
424 default:
425 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
426 TX_NOTIFY_GENERALERROR;
427 break;
428 }
429
430 return n;
431 }
432
qeth_cleanup_handled_pending(struct qeth_qdio_out_q * q,int bidx,int forced_cleanup)433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
434 int bidx, int forced_cleanup)
435 {
436 if (q->card->options.cq != QETH_CQ_ENABLED)
437 return;
438
439 if (q->bufs[bidx]->next_pending != NULL) {
440 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
441 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
442
443 while (c) {
444 if (forced_cleanup ||
445 atomic_read(&c->state) ==
446 QETH_QDIO_BUF_HANDLED_DELAYED) {
447 struct qeth_qdio_out_buffer *f = c;
448 QETH_CARD_TEXT(f->q->card, 5, "fp");
449 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
450 /* release here to avoid interleaving between
451 outbound tasklet and inbound tasklet
452 regarding notifications and lifecycle */
453 qeth_release_skbs(c);
454
455 c = f->next_pending;
456 WARN_ON_ONCE(head->next_pending != f);
457 head->next_pending = c;
458 kmem_cache_free(qeth_qdio_outbuf_cache, f);
459 } else {
460 head = c;
461 c = c->next_pending;
462 }
463
464 }
465 }
466 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
467 QETH_QDIO_BUF_HANDLED_DELAYED)) {
468 /* for recovery situations */
469 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
470 qeth_init_qdio_out_buf(q, bidx);
471 QETH_CARD_TEXT(q->card, 2, "clprecov");
472 }
473 }
474
475
qeth_qdio_handle_aob(struct qeth_card * card,unsigned long phys_aob_addr)476 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
477 unsigned long phys_aob_addr) {
478 struct qaob *aob;
479 struct qeth_qdio_out_buffer *buffer;
480 enum iucv_tx_notify notification;
481
482 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
483 QETH_CARD_TEXT(card, 5, "haob");
484 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
485 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
486 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
487
488 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
489 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
490 notification = TX_NOTIFY_OK;
491 } else {
492 WARN_ON_ONCE(atomic_read(&buffer->state) !=
493 QETH_QDIO_BUF_PENDING);
494 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
495 notification = TX_NOTIFY_DELAYED_OK;
496 }
497
498 if (aob->aorc != 0) {
499 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
500 notification = qeth_compute_cq_notification(aob->aorc, 1);
501 }
502 qeth_notify_skbs(buffer->q, buffer, notification);
503
504 buffer->aob = NULL;
505 qeth_clear_output_buffer(buffer->q, buffer,
506 QETH_QDIO_BUF_HANDLED_DELAYED);
507
508 /* from here on: do not touch buffer anymore */
509 qdio_release_aob(aob);
510 }
511
qeth_is_cq(struct qeth_card * card,unsigned int queue)512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
513 {
514 return card->options.cq == QETH_CQ_ENABLED &&
515 card->qdio.c_q != NULL &&
516 queue != 0 &&
517 queue == card->qdio.no_in_queues - 1;
518 }
519
520
qeth_issue_next_read(struct qeth_card * card)521 static int qeth_issue_next_read(struct qeth_card *card)
522 {
523 int rc;
524 struct qeth_cmd_buffer *iob;
525
526 QETH_CARD_TEXT(card, 5, "issnxrd");
527 if (card->read.state != CH_STATE_UP)
528 return -EIO;
529 iob = qeth_get_buffer(&card->read);
530 if (!iob) {
531 dev_warn(&card->gdev->dev, "The qeth device driver "
532 "failed to recover an error on the device\n");
533 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
534 "available\n", dev_name(&card->gdev->dev));
535 return -ENOMEM;
536 }
537 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
538 QETH_CARD_TEXT(card, 6, "noirqpnd");
539 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
540 (addr_t) iob, 0, 0);
541 if (rc) {
542 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
543 "rc=%i\n", dev_name(&card->gdev->dev), rc);
544 atomic_set(&card->read.irq_pending, 0);
545 card->read_or_write_problem = 1;
546 qeth_schedule_recovery(card);
547 wake_up(&card->wait_q);
548 }
549 return rc;
550 }
551
qeth_alloc_reply(struct qeth_card * card)552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
553 {
554 struct qeth_reply *reply;
555
556 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
557 if (reply) {
558 atomic_set(&reply->refcnt, 1);
559 atomic_set(&reply->received, 0);
560 reply->card = card;
561 }
562 return reply;
563 }
564
qeth_get_reply(struct qeth_reply * reply)565 static void qeth_get_reply(struct qeth_reply *reply)
566 {
567 WARN_ON(atomic_read(&reply->refcnt) <= 0);
568 atomic_inc(&reply->refcnt);
569 }
570
qeth_put_reply(struct qeth_reply * reply)571 static void qeth_put_reply(struct qeth_reply *reply)
572 {
573 WARN_ON(atomic_read(&reply->refcnt) <= 0);
574 if (atomic_dec_and_test(&reply->refcnt))
575 kfree(reply);
576 }
577
qeth_issue_ipa_msg(struct qeth_ipa_cmd * cmd,int rc,struct qeth_card * card)578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
579 struct qeth_card *card)
580 {
581 char *ipa_name;
582 int com = cmd->hdr.command;
583 ipa_name = qeth_get_ipa_cmd_name(com);
584 if (rc)
585 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
586 "x%X \"%s\"\n",
587 ipa_name, com, dev_name(&card->gdev->dev),
588 QETH_CARD_IFNAME(card), rc,
589 qeth_get_ipa_msg(rc));
590 else
591 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
592 ipa_name, com, dev_name(&card->gdev->dev),
593 QETH_CARD_IFNAME(card));
594 }
595
qeth_check_ipa_data(struct qeth_card * card,struct qeth_cmd_buffer * iob)596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
597 struct qeth_cmd_buffer *iob)
598 {
599 struct qeth_ipa_cmd *cmd = NULL;
600
601 QETH_CARD_TEXT(card, 5, "chkipad");
602 if (IS_IPA(iob->data)) {
603 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
604 if (IS_IPA_REPLY(cmd)) {
605 if (cmd->hdr.command != IPA_CMD_SETCCID &&
606 cmd->hdr.command != IPA_CMD_DELCCID &&
607 cmd->hdr.command != IPA_CMD_MODCCID &&
608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
609 qeth_issue_ipa_msg(cmd,
610 cmd->hdr.return_code, card);
611 return cmd;
612 } else {
613 switch (cmd->hdr.command) {
614 case IPA_CMD_STOPLAN:
615 if (cmd->hdr.return_code ==
616 IPA_RC_VEPA_TO_VEB_TRANSITION) {
617 dev_err(&card->gdev->dev,
618 "Interface %s is down because the "
619 "adjacent port is no longer in "
620 "reflective relay mode\n",
621 QETH_CARD_IFNAME(card));
622 qeth_close_dev(card);
623 } else {
624 dev_warn(&card->gdev->dev,
625 "The link for interface %s on CHPID"
626 " 0x%X failed\n",
627 QETH_CARD_IFNAME(card),
628 card->info.chpid);
629 qeth_issue_ipa_msg(cmd,
630 cmd->hdr.return_code, card);
631 }
632 card->lan_online = 0;
633 if (card->dev && netif_carrier_ok(card->dev))
634 netif_carrier_off(card->dev);
635 return NULL;
636 case IPA_CMD_STARTLAN:
637 dev_info(&card->gdev->dev,
638 "The link for %s on CHPID 0x%X has"
639 " been restored\n",
640 QETH_CARD_IFNAME(card),
641 card->info.chpid);
642 netif_carrier_on(card->dev);
643 card->lan_online = 1;
644 if (card->info.hwtrap)
645 card->info.hwtrap = 2;
646 qeth_schedule_recovery(card);
647 return NULL;
648 case IPA_CMD_SETBRIDGEPORT_IQD:
649 case IPA_CMD_SETBRIDGEPORT_OSA:
650 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
651 if (card->discipline->control_event_handler
652 (card, cmd))
653 return cmd;
654 else
655 return NULL;
656 case IPA_CMD_MODCCID:
657 return cmd;
658 case IPA_CMD_REGISTER_LOCAL_ADDR:
659 QETH_CARD_TEXT(card, 3, "irla");
660 break;
661 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
662 QETH_CARD_TEXT(card, 3, "urla");
663 break;
664 default:
665 QETH_DBF_MESSAGE(2, "Received data is IPA "
666 "but not a reply!\n");
667 break;
668 }
669 }
670 }
671 return cmd;
672 }
673
qeth_clear_ipacmd_list(struct qeth_card * card)674 void qeth_clear_ipacmd_list(struct qeth_card *card)
675 {
676 struct qeth_reply *reply, *r;
677 unsigned long flags;
678
679 QETH_CARD_TEXT(card, 4, "clipalst");
680
681 spin_lock_irqsave(&card->lock, flags);
682 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
683 qeth_get_reply(reply);
684 reply->rc = -EIO;
685 atomic_inc(&reply->received);
686 list_del_init(&reply->list);
687 wake_up(&reply->wait_q);
688 qeth_put_reply(reply);
689 }
690 spin_unlock_irqrestore(&card->lock, flags);
691 atomic_set(&card->write.irq_pending, 0);
692 }
693 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
694
qeth_check_idx_response(struct qeth_card * card,unsigned char * buffer)695 static int qeth_check_idx_response(struct qeth_card *card,
696 unsigned char *buffer)
697 {
698 if (!buffer)
699 return 0;
700
701 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
702 if ((buffer[2] & 0xc0) == 0xc0) {
703 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
704 "with cause code 0x%02x%s\n",
705 buffer[4],
706 ((buffer[4] == 0x22) ?
707 " -- try another portname" : ""));
708 QETH_CARD_TEXT(card, 2, "ckidxres");
709 QETH_CARD_TEXT(card, 2, " idxterm");
710 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
711 if (buffer[4] == 0xf6) {
712 dev_err(&card->gdev->dev,
713 "The qeth device is not configured "
714 "for the OSI layer required by z/VM\n");
715 return -EPERM;
716 }
717 return -EIO;
718 }
719 return 0;
720 }
721
CARD_FROM_CDEV(struct ccw_device * cdev)722 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
723 {
724 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
725 dev_get_drvdata(&cdev->dev))->dev);
726 return card;
727 }
728
qeth_setup_ccw(struct qeth_channel * channel,unsigned char * iob,__u32 len)729 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
730 __u32 len)
731 {
732 struct qeth_card *card;
733
734 card = CARD_FROM_CDEV(channel->ccwdev);
735 QETH_CARD_TEXT(card, 4, "setupccw");
736 if (channel == &card->read)
737 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
738 else
739 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
740 channel->ccw.count = len;
741 channel->ccw.cda = (__u32) __pa(iob);
742 }
743
__qeth_get_buffer(struct qeth_channel * channel)744 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
745 {
746 __u8 index;
747
748 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
749 index = channel->io_buf_no;
750 do {
751 if (channel->iob[index].state == BUF_STATE_FREE) {
752 channel->iob[index].state = BUF_STATE_LOCKED;
753 channel->io_buf_no = (channel->io_buf_no + 1) %
754 QETH_CMD_BUFFER_NO;
755 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
756 return channel->iob + index;
757 }
758 index = (index + 1) % QETH_CMD_BUFFER_NO;
759 } while (index != channel->io_buf_no);
760
761 return NULL;
762 }
763
qeth_release_buffer(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)764 void qeth_release_buffer(struct qeth_channel *channel,
765 struct qeth_cmd_buffer *iob)
766 {
767 unsigned long flags;
768
769 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
770 spin_lock_irqsave(&channel->iob_lock, flags);
771 memset(iob->data, 0, QETH_BUFSIZE);
772 iob->state = BUF_STATE_FREE;
773 iob->callback = qeth_send_control_data_cb;
774 iob->rc = 0;
775 spin_unlock_irqrestore(&channel->iob_lock, flags);
776 wake_up(&channel->wait_q);
777 }
778 EXPORT_SYMBOL_GPL(qeth_release_buffer);
779
qeth_get_buffer(struct qeth_channel * channel)780 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
781 {
782 struct qeth_cmd_buffer *buffer = NULL;
783 unsigned long flags;
784
785 spin_lock_irqsave(&channel->iob_lock, flags);
786 buffer = __qeth_get_buffer(channel);
787 spin_unlock_irqrestore(&channel->iob_lock, flags);
788 return buffer;
789 }
790
qeth_wait_for_buffer(struct qeth_channel * channel)791 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
792 {
793 struct qeth_cmd_buffer *buffer;
794 wait_event(channel->wait_q,
795 ((buffer = qeth_get_buffer(channel)) != NULL));
796 return buffer;
797 }
798 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
799
qeth_clear_cmd_buffers(struct qeth_channel * channel)800 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
801 {
802 int cnt;
803
804 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
805 qeth_release_buffer(channel, &channel->iob[cnt]);
806 channel->buf_no = 0;
807 channel->io_buf_no = 0;
808 }
809 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
810
qeth_send_control_data_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)811 static void qeth_send_control_data_cb(struct qeth_channel *channel,
812 struct qeth_cmd_buffer *iob)
813 {
814 struct qeth_card *card;
815 struct qeth_reply *reply, *r;
816 struct qeth_ipa_cmd *cmd;
817 unsigned long flags;
818 int keep_reply;
819 int rc = 0;
820
821 card = CARD_FROM_CDEV(channel->ccwdev);
822 QETH_CARD_TEXT(card, 4, "sndctlcb");
823 rc = qeth_check_idx_response(card, iob->data);
824 switch (rc) {
825 case 0:
826 break;
827 case -EIO:
828 qeth_clear_ipacmd_list(card);
829 qeth_schedule_recovery(card);
830 /* fall through */
831 default:
832 goto out;
833 }
834
835 cmd = qeth_check_ipa_data(card, iob);
836 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
837 goto out;
838 /*in case of OSN : check if cmd is set */
839 if (card->info.type == QETH_CARD_TYPE_OSN &&
840 cmd &&
841 cmd->hdr.command != IPA_CMD_STARTLAN &&
842 card->osn_info.assist_cb != NULL) {
843 card->osn_info.assist_cb(card->dev, cmd);
844 goto out;
845 }
846
847 spin_lock_irqsave(&card->lock, flags);
848 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
849 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
850 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
851 qeth_get_reply(reply);
852 list_del_init(&reply->list);
853 spin_unlock_irqrestore(&card->lock, flags);
854 keep_reply = 0;
855 if (reply->callback != NULL) {
856 if (cmd) {
857 reply->offset = (__u16)((char *)cmd -
858 (char *)iob->data);
859 keep_reply = reply->callback(card,
860 reply,
861 (unsigned long)cmd);
862 } else
863 keep_reply = reply->callback(card,
864 reply,
865 (unsigned long)iob);
866 }
867 if (cmd)
868 reply->rc = (u16) cmd->hdr.return_code;
869 else if (iob->rc)
870 reply->rc = iob->rc;
871 if (keep_reply) {
872 spin_lock_irqsave(&card->lock, flags);
873 list_add_tail(&reply->list,
874 &card->cmd_waiter_list);
875 spin_unlock_irqrestore(&card->lock, flags);
876 } else {
877 atomic_inc(&reply->received);
878 wake_up(&reply->wait_q);
879 }
880 qeth_put_reply(reply);
881 goto out;
882 }
883 }
884 spin_unlock_irqrestore(&card->lock, flags);
885 out:
886 memcpy(&card->seqno.pdu_hdr_ack,
887 QETH_PDU_HEADER_SEQ_NO(iob->data),
888 QETH_SEQ_NO_LENGTH);
889 qeth_release_buffer(channel, iob);
890 }
891
qeth_setup_channel(struct qeth_channel * channel)892 static int qeth_setup_channel(struct qeth_channel *channel)
893 {
894 int cnt;
895
896 QETH_DBF_TEXT(SETUP, 2, "setupch");
897 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
898 channel->iob[cnt].data =
899 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
900 if (channel->iob[cnt].data == NULL)
901 break;
902 channel->iob[cnt].state = BUF_STATE_FREE;
903 channel->iob[cnt].channel = channel;
904 channel->iob[cnt].callback = qeth_send_control_data_cb;
905 channel->iob[cnt].rc = 0;
906 }
907 if (cnt < QETH_CMD_BUFFER_NO) {
908 while (cnt-- > 0)
909 kfree(channel->iob[cnt].data);
910 return -ENOMEM;
911 }
912 channel->buf_no = 0;
913 channel->io_buf_no = 0;
914 atomic_set(&channel->irq_pending, 0);
915 spin_lock_init(&channel->iob_lock);
916
917 init_waitqueue_head(&channel->wait_q);
918 return 0;
919 }
920
qeth_set_thread_start_bit(struct qeth_card * card,unsigned long thread)921 static int qeth_set_thread_start_bit(struct qeth_card *card,
922 unsigned long thread)
923 {
924 unsigned long flags;
925
926 spin_lock_irqsave(&card->thread_mask_lock, flags);
927 if (!(card->thread_allowed_mask & thread) ||
928 (card->thread_start_mask & thread)) {
929 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
930 return -EPERM;
931 }
932 card->thread_start_mask |= thread;
933 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
934 return 0;
935 }
936
qeth_clear_thread_start_bit(struct qeth_card * card,unsigned long thread)937 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
938 {
939 unsigned long flags;
940
941 spin_lock_irqsave(&card->thread_mask_lock, flags);
942 card->thread_start_mask &= ~thread;
943 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
944 wake_up(&card->wait_q);
945 }
946 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
947
qeth_clear_thread_running_bit(struct qeth_card * card,unsigned long thread)948 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
949 {
950 unsigned long flags;
951
952 spin_lock_irqsave(&card->thread_mask_lock, flags);
953 card->thread_running_mask &= ~thread;
954 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
955 wake_up(&card->wait_q);
956 }
957 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
958
__qeth_do_run_thread(struct qeth_card * card,unsigned long thread)959 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
960 {
961 unsigned long flags;
962 int rc = 0;
963
964 spin_lock_irqsave(&card->thread_mask_lock, flags);
965 if (card->thread_start_mask & thread) {
966 if ((card->thread_allowed_mask & thread) &&
967 !(card->thread_running_mask & thread)) {
968 rc = 1;
969 card->thread_start_mask &= ~thread;
970 card->thread_running_mask |= thread;
971 } else
972 rc = -EPERM;
973 }
974 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
975 return rc;
976 }
977
qeth_do_run_thread(struct qeth_card * card,unsigned long thread)978 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
979 {
980 int rc = 0;
981
982 wait_event(card->wait_q,
983 (rc = __qeth_do_run_thread(card, thread)) >= 0);
984 return rc;
985 }
986 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
987
qeth_schedule_recovery(struct qeth_card * card)988 void qeth_schedule_recovery(struct qeth_card *card)
989 {
990 QETH_CARD_TEXT(card, 2, "startrec");
991 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
992 schedule_work(&card->kernel_thread_starter);
993 }
994 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
995
qeth_get_problem(struct ccw_device * cdev,struct irb * irb)996 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
997 {
998 int dstat, cstat;
999 char *sense;
1000 struct qeth_card *card;
1001
1002 sense = (char *) irb->ecw;
1003 cstat = irb->scsw.cmd.cstat;
1004 dstat = irb->scsw.cmd.dstat;
1005 card = CARD_FROM_CDEV(cdev);
1006
1007 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1008 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1009 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1010 QETH_CARD_TEXT(card, 2, "CGENCHK");
1011 dev_warn(&cdev->dev, "The qeth device driver "
1012 "failed to recover an error on the device\n");
1013 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1014 dev_name(&cdev->dev), dstat, cstat);
1015 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1016 16, 1, irb, 64, 1);
1017 return 1;
1018 }
1019
1020 if (dstat & DEV_STAT_UNIT_CHECK) {
1021 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1022 SENSE_RESETTING_EVENT_FLAG) {
1023 QETH_CARD_TEXT(card, 2, "REVIND");
1024 return 1;
1025 }
1026 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1027 SENSE_COMMAND_REJECT_FLAG) {
1028 QETH_CARD_TEXT(card, 2, "CMDREJi");
1029 return 1;
1030 }
1031 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1032 QETH_CARD_TEXT(card, 2, "AFFE");
1033 return 1;
1034 }
1035 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1036 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1037 return 0;
1038 }
1039 QETH_CARD_TEXT(card, 2, "DGENCHK");
1040 return 1;
1041 }
1042 return 0;
1043 }
1044
__qeth_check_irb_error(struct ccw_device * cdev,unsigned long intparm,struct irb * irb)1045 static long __qeth_check_irb_error(struct ccw_device *cdev,
1046 unsigned long intparm, struct irb *irb)
1047 {
1048 struct qeth_card *card;
1049
1050 card = CARD_FROM_CDEV(cdev);
1051
1052 if (!card || !IS_ERR(irb))
1053 return 0;
1054
1055 switch (PTR_ERR(irb)) {
1056 case -EIO:
1057 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1058 dev_name(&cdev->dev));
1059 QETH_CARD_TEXT(card, 2, "ckirberr");
1060 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1061 break;
1062 case -ETIMEDOUT:
1063 dev_warn(&cdev->dev, "A hardware operation timed out"
1064 " on the device\n");
1065 QETH_CARD_TEXT(card, 2, "ckirberr");
1066 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1067 if (intparm == QETH_RCD_PARM) {
1068 if (card->data.ccwdev == cdev) {
1069 card->data.state = CH_STATE_DOWN;
1070 wake_up(&card->wait_q);
1071 }
1072 }
1073 break;
1074 default:
1075 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1076 dev_name(&cdev->dev), PTR_ERR(irb));
1077 QETH_CARD_TEXT(card, 2, "ckirberr");
1078 QETH_CARD_TEXT(card, 2, " rc???");
1079 }
1080 return PTR_ERR(irb);
1081 }
1082
qeth_irq(struct ccw_device * cdev,unsigned long intparm,struct irb * irb)1083 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1084 struct irb *irb)
1085 {
1086 int rc;
1087 int cstat, dstat;
1088 struct qeth_cmd_buffer *buffer;
1089 struct qeth_channel *channel;
1090 struct qeth_card *card;
1091 struct qeth_cmd_buffer *iob;
1092 __u8 index;
1093
1094 if (__qeth_check_irb_error(cdev, intparm, irb))
1095 return;
1096 cstat = irb->scsw.cmd.cstat;
1097 dstat = irb->scsw.cmd.dstat;
1098
1099 card = CARD_FROM_CDEV(cdev);
1100 if (!card)
1101 return;
1102
1103 QETH_CARD_TEXT(card, 5, "irq");
1104
1105 if (card->read.ccwdev == cdev) {
1106 channel = &card->read;
1107 QETH_CARD_TEXT(card, 5, "read");
1108 } else if (card->write.ccwdev == cdev) {
1109 channel = &card->write;
1110 QETH_CARD_TEXT(card, 5, "write");
1111 } else {
1112 channel = &card->data;
1113 QETH_CARD_TEXT(card, 5, "data");
1114 }
1115 atomic_set(&channel->irq_pending, 0);
1116
1117 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1118 channel->state = CH_STATE_STOPPED;
1119
1120 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1121 channel->state = CH_STATE_HALTED;
1122
1123 /*let's wake up immediately on data channel*/
1124 if ((channel == &card->data) && (intparm != 0) &&
1125 (intparm != QETH_RCD_PARM))
1126 goto out;
1127
1128 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1129 QETH_CARD_TEXT(card, 6, "clrchpar");
1130 /* we don't have to handle this further */
1131 intparm = 0;
1132 }
1133 if (intparm == QETH_HALT_CHANNEL_PARM) {
1134 QETH_CARD_TEXT(card, 6, "hltchpar");
1135 /* we don't have to handle this further */
1136 intparm = 0;
1137 }
1138 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1139 (dstat & DEV_STAT_UNIT_CHECK) ||
1140 (cstat)) {
1141 if (irb->esw.esw0.erw.cons) {
1142 dev_warn(&channel->ccwdev->dev,
1143 "The qeth device driver failed to recover "
1144 "an error on the device\n");
1145 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1146 "0x%X dstat 0x%X\n",
1147 dev_name(&channel->ccwdev->dev), cstat, dstat);
1148 print_hex_dump(KERN_WARNING, "qeth: irb ",
1149 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1150 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1151 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1152 }
1153 if (intparm == QETH_RCD_PARM) {
1154 channel->state = CH_STATE_DOWN;
1155 goto out;
1156 }
1157 rc = qeth_get_problem(cdev, irb);
1158 if (rc) {
1159 qeth_clear_ipacmd_list(card);
1160 qeth_schedule_recovery(card);
1161 goto out;
1162 }
1163 }
1164
1165 if (intparm == QETH_RCD_PARM) {
1166 channel->state = CH_STATE_RCD_DONE;
1167 goto out;
1168 }
1169 if (intparm) {
1170 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1171 buffer->state = BUF_STATE_PROCESSED;
1172 }
1173 if (channel == &card->data)
1174 return;
1175 if (channel == &card->read &&
1176 channel->state == CH_STATE_UP)
1177 qeth_issue_next_read(card);
1178
1179 iob = channel->iob;
1180 index = channel->buf_no;
1181 while (iob[index].state == BUF_STATE_PROCESSED) {
1182 if (iob[index].callback != NULL)
1183 iob[index].callback(channel, iob + index);
1184
1185 index = (index + 1) % QETH_CMD_BUFFER_NO;
1186 }
1187 channel->buf_no = index;
1188 out:
1189 wake_up(&card->wait_q);
1190 return;
1191 }
1192
qeth_notify_skbs(struct qeth_qdio_out_q * q,struct qeth_qdio_out_buffer * buf,enum iucv_tx_notify notification)1193 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1194 struct qeth_qdio_out_buffer *buf,
1195 enum iucv_tx_notify notification)
1196 {
1197 struct sk_buff *skb;
1198
1199 if (skb_queue_empty(&buf->skb_list))
1200 goto out;
1201 skb = skb_peek(&buf->skb_list);
1202 while (skb) {
1203 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1204 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1205 if (skb->protocol == ETH_P_AF_IUCV) {
1206 if (skb->sk) {
1207 struct iucv_sock *iucv = iucv_sk(skb->sk);
1208 iucv->sk_txnotify(skb, notification);
1209 }
1210 }
1211 if (skb_queue_is_last(&buf->skb_list, skb))
1212 skb = NULL;
1213 else
1214 skb = skb_queue_next(&buf->skb_list, skb);
1215 }
1216 out:
1217 return;
1218 }
1219
qeth_release_skbs(struct qeth_qdio_out_buffer * buf)1220 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1221 {
1222 struct sk_buff *skb;
1223 struct iucv_sock *iucv;
1224 int notify_general_error = 0;
1225
1226 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1227 notify_general_error = 1;
1228
1229 /* release may never happen from within CQ tasklet scope */
1230 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1231
1232 skb = skb_dequeue(&buf->skb_list);
1233 while (skb) {
1234 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1235 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1236 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1237 if (skb->sk) {
1238 iucv = iucv_sk(skb->sk);
1239 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1240 }
1241 }
1242 atomic_dec(&skb->users);
1243 dev_kfree_skb_any(skb);
1244 skb = skb_dequeue(&buf->skb_list);
1245 }
1246 }
1247
qeth_clear_output_buffer(struct qeth_qdio_out_q * queue,struct qeth_qdio_out_buffer * buf,enum qeth_qdio_buffer_states newbufstate)1248 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1249 struct qeth_qdio_out_buffer *buf,
1250 enum qeth_qdio_buffer_states newbufstate)
1251 {
1252 int i;
1253
1254 /* is PCI flag set on buffer? */
1255 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1256 atomic_dec(&queue->set_pci_flags_count);
1257
1258 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1259 qeth_release_skbs(buf);
1260 }
1261 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1262 if (buf->buffer->element[i].addr && buf->is_header[i])
1263 kmem_cache_free(qeth_core_header_cache,
1264 buf->buffer->element[i].addr);
1265 buf->is_header[i] = 0;
1266 buf->buffer->element[i].length = 0;
1267 buf->buffer->element[i].addr = NULL;
1268 buf->buffer->element[i].eflags = 0;
1269 buf->buffer->element[i].sflags = 0;
1270 }
1271 buf->buffer->element[15].eflags = 0;
1272 buf->buffer->element[15].sflags = 0;
1273 buf->next_element_to_fill = 0;
1274 atomic_set(&buf->state, newbufstate);
1275 }
1276
qeth_clear_outq_buffers(struct qeth_qdio_out_q * q,int free)1277 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1278 {
1279 int j;
1280
1281 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1282 if (!q->bufs[j])
1283 continue;
1284 qeth_cleanup_handled_pending(q, j, 1);
1285 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1286 if (free) {
1287 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1288 q->bufs[j] = NULL;
1289 }
1290 }
1291 }
1292
qeth_clear_qdio_buffers(struct qeth_card * card)1293 void qeth_clear_qdio_buffers(struct qeth_card *card)
1294 {
1295 int i;
1296
1297 QETH_CARD_TEXT(card, 2, "clearqdbf");
1298 /* clear outbound buffers to free skbs */
1299 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1300 if (card->qdio.out_qs[i]) {
1301 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1302 }
1303 }
1304 }
1305 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1306
qeth_free_buffer_pool(struct qeth_card * card)1307 static void qeth_free_buffer_pool(struct qeth_card *card)
1308 {
1309 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1310 int i = 0;
1311 list_for_each_entry_safe(pool_entry, tmp,
1312 &card->qdio.init_pool.entry_list, init_list){
1313 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1314 free_page((unsigned long)pool_entry->elements[i]);
1315 list_del(&pool_entry->init_list);
1316 kfree(pool_entry);
1317 }
1318 }
1319
qeth_clean_channel(struct qeth_channel * channel)1320 static void qeth_clean_channel(struct qeth_channel *channel)
1321 {
1322 int cnt;
1323
1324 QETH_DBF_TEXT(SETUP, 2, "freech");
1325 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1326 kfree(channel->iob[cnt].data);
1327 }
1328
qeth_set_single_write_queues(struct qeth_card * card)1329 static void qeth_set_single_write_queues(struct qeth_card *card)
1330 {
1331 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1332 (card->qdio.no_out_queues == 4))
1333 qeth_free_qdio_buffers(card);
1334
1335 card->qdio.no_out_queues = 1;
1336 if (card->qdio.default_out_queue != 0)
1337 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1338
1339 card->qdio.default_out_queue = 0;
1340 }
1341
qeth_set_multiple_write_queues(struct qeth_card * card)1342 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1343 {
1344 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1345 (card->qdio.no_out_queues == 1)) {
1346 qeth_free_qdio_buffers(card);
1347 card->qdio.default_out_queue = 2;
1348 }
1349 card->qdio.no_out_queues = 4;
1350 }
1351
qeth_update_from_chp_desc(struct qeth_card * card)1352 static void qeth_update_from_chp_desc(struct qeth_card *card)
1353 {
1354 struct ccw_device *ccwdev;
1355 struct channel_path_desc *chp_dsc;
1356
1357 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1358
1359 ccwdev = card->data.ccwdev;
1360 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1361 if (!chp_dsc)
1362 goto out;
1363
1364 card->info.func_level = 0x4100 + chp_dsc->desc;
1365 if (card->info.type == QETH_CARD_TYPE_IQD)
1366 goto out;
1367
1368 /* CHPP field bit 6 == 1 -> single queue */
1369 if ((chp_dsc->chpp & 0x02) == 0x02)
1370 qeth_set_single_write_queues(card);
1371 else
1372 qeth_set_multiple_write_queues(card);
1373 out:
1374 kfree(chp_dsc);
1375 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1376 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1377 }
1378
qeth_init_qdio_info(struct qeth_card * card)1379 static void qeth_init_qdio_info(struct qeth_card *card)
1380 {
1381 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1382 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1383 /* inbound */
1384 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1385 if (card->info.type == QETH_CARD_TYPE_IQD)
1386 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1387 else
1388 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1389 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1390 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1391 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1392 }
1393
qeth_set_intial_options(struct qeth_card * card)1394 static void qeth_set_intial_options(struct qeth_card *card)
1395 {
1396 card->options.route4.type = NO_ROUTER;
1397 card->options.route6.type = NO_ROUTER;
1398 card->options.fake_broadcast = 0;
1399 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1400 card->options.performance_stats = 0;
1401 card->options.rx_sg_cb = QETH_RX_SG_CB;
1402 card->options.isolation = ISOLATION_MODE_NONE;
1403 card->options.cq = QETH_CQ_DISABLED;
1404 }
1405
qeth_do_start_thread(struct qeth_card * card,unsigned long thread)1406 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1407 {
1408 unsigned long flags;
1409 int rc = 0;
1410
1411 spin_lock_irqsave(&card->thread_mask_lock, flags);
1412 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1413 (u8) card->thread_start_mask,
1414 (u8) card->thread_allowed_mask,
1415 (u8) card->thread_running_mask);
1416 rc = (card->thread_start_mask & thread);
1417 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1418 return rc;
1419 }
1420
qeth_start_kernel_thread(struct work_struct * work)1421 static void qeth_start_kernel_thread(struct work_struct *work)
1422 {
1423 struct task_struct *ts;
1424 struct qeth_card *card = container_of(work, struct qeth_card,
1425 kernel_thread_starter);
1426 QETH_CARD_TEXT(card , 2, "strthrd");
1427
1428 if (card->read.state != CH_STATE_UP &&
1429 card->write.state != CH_STATE_UP)
1430 return;
1431 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1432 ts = kthread_run(card->discipline->recover, (void *)card,
1433 "qeth_recover");
1434 if (IS_ERR(ts)) {
1435 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1436 qeth_clear_thread_running_bit(card,
1437 QETH_RECOVER_THREAD);
1438 }
1439 }
1440 }
1441
1442 static void qeth_buffer_reclaim_work(struct work_struct *);
qeth_setup_card(struct qeth_card * card)1443 static int qeth_setup_card(struct qeth_card *card)
1444 {
1445
1446 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1447 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1448
1449 card->read.state = CH_STATE_DOWN;
1450 card->write.state = CH_STATE_DOWN;
1451 card->data.state = CH_STATE_DOWN;
1452 card->state = CARD_STATE_DOWN;
1453 card->lan_online = 0;
1454 card->read_or_write_problem = 0;
1455 card->dev = NULL;
1456 spin_lock_init(&card->vlanlock);
1457 spin_lock_init(&card->mclock);
1458 spin_lock_init(&card->lock);
1459 spin_lock_init(&card->ip_lock);
1460 spin_lock_init(&card->thread_mask_lock);
1461 mutex_init(&card->conf_mutex);
1462 mutex_init(&card->discipline_mutex);
1463 card->thread_start_mask = 0;
1464 card->thread_allowed_mask = 0;
1465 card->thread_running_mask = 0;
1466 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1467 INIT_LIST_HEAD(&card->ip_list);
1468 INIT_LIST_HEAD(card->ip_tbd_list);
1469 INIT_LIST_HEAD(&card->cmd_waiter_list);
1470 init_waitqueue_head(&card->wait_q);
1471 /* initial options */
1472 qeth_set_intial_options(card);
1473 /* IP address takeover */
1474 INIT_LIST_HEAD(&card->ipato.entries);
1475 card->ipato.enabled = 0;
1476 card->ipato.invert4 = 0;
1477 card->ipato.invert6 = 0;
1478 /* init QDIO stuff */
1479 qeth_init_qdio_info(card);
1480 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1481 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1482 return 0;
1483 }
1484
qeth_core_sl_print(struct seq_file * m,struct service_level * slr)1485 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1486 {
1487 struct qeth_card *card = container_of(slr, struct qeth_card,
1488 qeth_service_level);
1489 if (card->info.mcl_level[0])
1490 seq_printf(m, "qeth: %s firmware level %s\n",
1491 CARD_BUS_ID(card), card->info.mcl_level);
1492 }
1493
qeth_alloc_card(void)1494 static struct qeth_card *qeth_alloc_card(void)
1495 {
1496 struct qeth_card *card;
1497
1498 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1499 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1500 if (!card)
1501 goto out;
1502 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1503 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1504 if (!card->ip_tbd_list) {
1505 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1506 goto out_card;
1507 }
1508 if (qeth_setup_channel(&card->read))
1509 goto out_ip;
1510 if (qeth_setup_channel(&card->write))
1511 goto out_channel;
1512 card->options.layer2 = -1;
1513 card->qeth_service_level.seq_print = qeth_core_sl_print;
1514 register_service_level(&card->qeth_service_level);
1515 return card;
1516
1517 out_channel:
1518 qeth_clean_channel(&card->read);
1519 out_ip:
1520 kfree(card->ip_tbd_list);
1521 out_card:
1522 kfree(card);
1523 out:
1524 return NULL;
1525 }
1526
qeth_determine_card_type(struct qeth_card * card)1527 static int qeth_determine_card_type(struct qeth_card *card)
1528 {
1529 int i = 0;
1530
1531 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1532
1533 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1534 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1535 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1536 if ((CARD_RDEV(card)->id.dev_type ==
1537 known_devices[i][QETH_DEV_TYPE_IND]) &&
1538 (CARD_RDEV(card)->id.dev_model ==
1539 known_devices[i][QETH_DEV_MODEL_IND])) {
1540 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1541 card->qdio.no_out_queues =
1542 known_devices[i][QETH_QUEUE_NO_IND];
1543 card->qdio.no_in_queues = 1;
1544 card->info.is_multicast_different =
1545 known_devices[i][QETH_MULTICAST_IND];
1546 qeth_update_from_chp_desc(card);
1547 return 0;
1548 }
1549 i++;
1550 }
1551 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1552 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1553 "unknown type\n");
1554 return -ENOENT;
1555 }
1556
qeth_clear_channel(struct qeth_channel * channel)1557 static int qeth_clear_channel(struct qeth_channel *channel)
1558 {
1559 unsigned long flags;
1560 struct qeth_card *card;
1561 int rc;
1562
1563 card = CARD_FROM_CDEV(channel->ccwdev);
1564 QETH_CARD_TEXT(card, 3, "clearch");
1565 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1566 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1567 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1568
1569 if (rc)
1570 return rc;
1571 rc = wait_event_interruptible_timeout(card->wait_q,
1572 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1573 if (rc == -ERESTARTSYS)
1574 return rc;
1575 if (channel->state != CH_STATE_STOPPED)
1576 return -ETIME;
1577 channel->state = CH_STATE_DOWN;
1578 return 0;
1579 }
1580
qeth_halt_channel(struct qeth_channel * channel)1581 static int qeth_halt_channel(struct qeth_channel *channel)
1582 {
1583 unsigned long flags;
1584 struct qeth_card *card;
1585 int rc;
1586
1587 card = CARD_FROM_CDEV(channel->ccwdev);
1588 QETH_CARD_TEXT(card, 3, "haltch");
1589 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1590 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1591 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1592
1593 if (rc)
1594 return rc;
1595 rc = wait_event_interruptible_timeout(card->wait_q,
1596 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1597 if (rc == -ERESTARTSYS)
1598 return rc;
1599 if (channel->state != CH_STATE_HALTED)
1600 return -ETIME;
1601 return 0;
1602 }
1603
qeth_halt_channels(struct qeth_card * card)1604 static int qeth_halt_channels(struct qeth_card *card)
1605 {
1606 int rc1 = 0, rc2 = 0, rc3 = 0;
1607
1608 QETH_CARD_TEXT(card, 3, "haltchs");
1609 rc1 = qeth_halt_channel(&card->read);
1610 rc2 = qeth_halt_channel(&card->write);
1611 rc3 = qeth_halt_channel(&card->data);
1612 if (rc1)
1613 return rc1;
1614 if (rc2)
1615 return rc2;
1616 return rc3;
1617 }
1618
qeth_clear_channels(struct qeth_card * card)1619 static int qeth_clear_channels(struct qeth_card *card)
1620 {
1621 int rc1 = 0, rc2 = 0, rc3 = 0;
1622
1623 QETH_CARD_TEXT(card, 3, "clearchs");
1624 rc1 = qeth_clear_channel(&card->read);
1625 rc2 = qeth_clear_channel(&card->write);
1626 rc3 = qeth_clear_channel(&card->data);
1627 if (rc1)
1628 return rc1;
1629 if (rc2)
1630 return rc2;
1631 return rc3;
1632 }
1633
qeth_clear_halt_card(struct qeth_card * card,int halt)1634 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1635 {
1636 int rc = 0;
1637
1638 QETH_CARD_TEXT(card, 3, "clhacrd");
1639
1640 if (halt)
1641 rc = qeth_halt_channels(card);
1642 if (rc)
1643 return rc;
1644 return qeth_clear_channels(card);
1645 }
1646
qeth_qdio_clear_card(struct qeth_card * card,int use_halt)1647 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1648 {
1649 int rc = 0;
1650
1651 QETH_CARD_TEXT(card, 3, "qdioclr");
1652 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1653 QETH_QDIO_CLEANING)) {
1654 case QETH_QDIO_ESTABLISHED:
1655 if (card->info.type == QETH_CARD_TYPE_IQD)
1656 rc = qdio_shutdown(CARD_DDEV(card),
1657 QDIO_FLAG_CLEANUP_USING_HALT);
1658 else
1659 rc = qdio_shutdown(CARD_DDEV(card),
1660 QDIO_FLAG_CLEANUP_USING_CLEAR);
1661 if (rc)
1662 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1663 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1664 break;
1665 case QETH_QDIO_CLEANING:
1666 return rc;
1667 default:
1668 break;
1669 }
1670 rc = qeth_clear_halt_card(card, use_halt);
1671 if (rc)
1672 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1673 card->state = CARD_STATE_DOWN;
1674 return rc;
1675 }
1676 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1677
qeth_read_conf_data(struct qeth_card * card,void ** buffer,int * length)1678 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1679 int *length)
1680 {
1681 struct ciw *ciw;
1682 char *rcd_buf;
1683 int ret;
1684 struct qeth_channel *channel = &card->data;
1685 unsigned long flags;
1686
1687 /*
1688 * scan for RCD command in extended SenseID data
1689 */
1690 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1691 if (!ciw || ciw->cmd == 0)
1692 return -EOPNOTSUPP;
1693 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1694 if (!rcd_buf)
1695 return -ENOMEM;
1696
1697 channel->ccw.cmd_code = ciw->cmd;
1698 channel->ccw.cda = (__u32) __pa(rcd_buf);
1699 channel->ccw.count = ciw->count;
1700 channel->ccw.flags = CCW_FLAG_SLI;
1701 channel->state = CH_STATE_RCD;
1702 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1703 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1704 QETH_RCD_PARM, LPM_ANYPATH, 0,
1705 QETH_RCD_TIMEOUT);
1706 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1707 if (!ret)
1708 wait_event(card->wait_q,
1709 (channel->state == CH_STATE_RCD_DONE ||
1710 channel->state == CH_STATE_DOWN));
1711 if (channel->state == CH_STATE_DOWN)
1712 ret = -EIO;
1713 else
1714 channel->state = CH_STATE_DOWN;
1715 if (ret) {
1716 kfree(rcd_buf);
1717 *buffer = NULL;
1718 *length = 0;
1719 } else {
1720 *length = ciw->count;
1721 *buffer = rcd_buf;
1722 }
1723 return ret;
1724 }
1725
qeth_configure_unitaddr(struct qeth_card * card,char * prcd)1726 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1727 {
1728 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1729 card->info.chpid = prcd[30];
1730 card->info.unit_addr2 = prcd[31];
1731 card->info.cula = prcd[63];
1732 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1733 (prcd[0x11] == _ascebc['M']));
1734 }
1735
qeth_configure_blkt_default(struct qeth_card * card,char * prcd)1736 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1737 {
1738 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1739
1740 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1741 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1742 card->info.blkt.time_total = 0;
1743 card->info.blkt.inter_packet = 0;
1744 card->info.blkt.inter_packet_jumbo = 0;
1745 } else {
1746 card->info.blkt.time_total = 250;
1747 card->info.blkt.inter_packet = 5;
1748 card->info.blkt.inter_packet_jumbo = 15;
1749 }
1750 }
1751
qeth_init_tokens(struct qeth_card * card)1752 static void qeth_init_tokens(struct qeth_card *card)
1753 {
1754 card->token.issuer_rm_w = 0x00010103UL;
1755 card->token.cm_filter_w = 0x00010108UL;
1756 card->token.cm_connection_w = 0x0001010aUL;
1757 card->token.ulp_filter_w = 0x0001010bUL;
1758 card->token.ulp_connection_w = 0x0001010dUL;
1759 }
1760
qeth_init_func_level(struct qeth_card * card)1761 static void qeth_init_func_level(struct qeth_card *card)
1762 {
1763 switch (card->info.type) {
1764 case QETH_CARD_TYPE_IQD:
1765 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1766 break;
1767 case QETH_CARD_TYPE_OSD:
1768 case QETH_CARD_TYPE_OSN:
1769 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1770 break;
1771 default:
1772 break;
1773 }
1774 }
1775
qeth_idx_activate_get_answer(struct qeth_channel * channel,void (* idx_reply_cb)(struct qeth_channel *,struct qeth_cmd_buffer *))1776 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1777 void (*idx_reply_cb)(struct qeth_channel *,
1778 struct qeth_cmd_buffer *))
1779 {
1780 struct qeth_cmd_buffer *iob;
1781 unsigned long flags;
1782 int rc;
1783 struct qeth_card *card;
1784
1785 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1786 card = CARD_FROM_CDEV(channel->ccwdev);
1787 iob = qeth_get_buffer(channel);
1788 if (!iob)
1789 return -ENOMEM;
1790 iob->callback = idx_reply_cb;
1791 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1792 channel->ccw.count = QETH_BUFSIZE;
1793 channel->ccw.cda = (__u32) __pa(iob->data);
1794
1795 wait_event(card->wait_q,
1796 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1797 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1798 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1799 rc = ccw_device_start(channel->ccwdev,
1800 &channel->ccw, (addr_t) iob, 0, 0);
1801 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1802
1803 if (rc) {
1804 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1805 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1806 atomic_set(&channel->irq_pending, 0);
1807 wake_up(&card->wait_q);
1808 return rc;
1809 }
1810 rc = wait_event_interruptible_timeout(card->wait_q,
1811 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1812 if (rc == -ERESTARTSYS)
1813 return rc;
1814 if (channel->state != CH_STATE_UP) {
1815 rc = -ETIME;
1816 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1817 qeth_clear_cmd_buffers(channel);
1818 } else
1819 rc = 0;
1820 return rc;
1821 }
1822
qeth_idx_activate_channel(struct qeth_channel * channel,void (* idx_reply_cb)(struct qeth_channel *,struct qeth_cmd_buffer *))1823 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1824 void (*idx_reply_cb)(struct qeth_channel *,
1825 struct qeth_cmd_buffer *))
1826 {
1827 struct qeth_card *card;
1828 struct qeth_cmd_buffer *iob;
1829 unsigned long flags;
1830 __u16 temp;
1831 __u8 tmp;
1832 int rc;
1833 struct ccw_dev_id temp_devid;
1834
1835 card = CARD_FROM_CDEV(channel->ccwdev);
1836
1837 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1838
1839 iob = qeth_get_buffer(channel);
1840 if (!iob)
1841 return -ENOMEM;
1842 iob->callback = idx_reply_cb;
1843 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1844 channel->ccw.count = IDX_ACTIVATE_SIZE;
1845 channel->ccw.cda = (__u32) __pa(iob->data);
1846 if (channel == &card->write) {
1847 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1848 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1849 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1850 card->seqno.trans_hdr++;
1851 } else {
1852 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1853 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1854 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1855 }
1856 tmp = ((__u8)card->info.portno) | 0x80;
1857 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1858 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1859 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1860 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1861 &card->info.func_level, sizeof(__u16));
1862 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1863 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1864 temp = (card->info.cula << 8) + card->info.unit_addr2;
1865 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1866
1867 wait_event(card->wait_q,
1868 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1869 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1870 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1871 rc = ccw_device_start(channel->ccwdev,
1872 &channel->ccw, (addr_t) iob, 0, 0);
1873 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1874
1875 if (rc) {
1876 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1877 rc);
1878 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1879 atomic_set(&channel->irq_pending, 0);
1880 wake_up(&card->wait_q);
1881 return rc;
1882 }
1883 rc = wait_event_interruptible_timeout(card->wait_q,
1884 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1885 if (rc == -ERESTARTSYS)
1886 return rc;
1887 if (channel->state != CH_STATE_ACTIVATING) {
1888 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1889 " failed to recover an error on the device\n");
1890 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1891 dev_name(&channel->ccwdev->dev));
1892 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1893 qeth_clear_cmd_buffers(channel);
1894 return -ETIME;
1895 }
1896 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1897 }
1898
qeth_peer_func_level(int level)1899 static int qeth_peer_func_level(int level)
1900 {
1901 if ((level & 0xff) == 8)
1902 return (level & 0xff) + 0x400;
1903 if (((level >> 8) & 3) == 1)
1904 return (level & 0xff) + 0x200;
1905 return level;
1906 }
1907
qeth_idx_write_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)1908 static void qeth_idx_write_cb(struct qeth_channel *channel,
1909 struct qeth_cmd_buffer *iob)
1910 {
1911 struct qeth_card *card;
1912 __u16 temp;
1913
1914 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1915
1916 if (channel->state == CH_STATE_DOWN) {
1917 channel->state = CH_STATE_ACTIVATING;
1918 goto out;
1919 }
1920 card = CARD_FROM_CDEV(channel->ccwdev);
1921
1922 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1923 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1924 dev_err(&card->write.ccwdev->dev,
1925 "The adapter is used exclusively by another "
1926 "host\n");
1927 else
1928 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1929 " negative reply\n",
1930 dev_name(&card->write.ccwdev->dev));
1931 goto out;
1932 }
1933 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1934 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1935 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1936 "function level mismatch (sent: 0x%x, received: "
1937 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1938 card->info.func_level, temp);
1939 goto out;
1940 }
1941 channel->state = CH_STATE_UP;
1942 out:
1943 qeth_release_buffer(channel, iob);
1944 }
1945
qeth_idx_read_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)1946 static void qeth_idx_read_cb(struct qeth_channel *channel,
1947 struct qeth_cmd_buffer *iob)
1948 {
1949 struct qeth_card *card;
1950 __u16 temp;
1951
1952 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1953 if (channel->state == CH_STATE_DOWN) {
1954 channel->state = CH_STATE_ACTIVATING;
1955 goto out;
1956 }
1957
1958 card = CARD_FROM_CDEV(channel->ccwdev);
1959 if (qeth_check_idx_response(card, iob->data))
1960 goto out;
1961
1962 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1963 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1964 case QETH_IDX_ACT_ERR_EXCL:
1965 dev_err(&card->write.ccwdev->dev,
1966 "The adapter is used exclusively by another "
1967 "host\n");
1968 break;
1969 case QETH_IDX_ACT_ERR_AUTH:
1970 case QETH_IDX_ACT_ERR_AUTH_USER:
1971 dev_err(&card->read.ccwdev->dev,
1972 "Setting the device online failed because of "
1973 "insufficient authorization\n");
1974 break;
1975 default:
1976 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1977 " negative reply\n",
1978 dev_name(&card->read.ccwdev->dev));
1979 }
1980 QETH_CARD_TEXT_(card, 2, "idxread%c",
1981 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1982 goto out;
1983 }
1984
1985 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1986 if (temp != qeth_peer_func_level(card->info.func_level)) {
1987 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1988 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1989 dev_name(&card->read.ccwdev->dev),
1990 card->info.func_level, temp);
1991 goto out;
1992 }
1993 memcpy(&card->token.issuer_rm_r,
1994 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1995 QETH_MPC_TOKEN_LENGTH);
1996 memcpy(&card->info.mcl_level[0],
1997 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1998 channel->state = CH_STATE_UP;
1999 out:
2000 qeth_release_buffer(channel, iob);
2001 }
2002
qeth_prepare_control_data(struct qeth_card * card,int len,struct qeth_cmd_buffer * iob)2003 void qeth_prepare_control_data(struct qeth_card *card, int len,
2004 struct qeth_cmd_buffer *iob)
2005 {
2006 qeth_setup_ccw(&card->write, iob->data, len);
2007 iob->callback = qeth_release_buffer;
2008
2009 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2010 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2011 card->seqno.trans_hdr++;
2012 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2013 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2014 card->seqno.pdu_hdr++;
2015 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2016 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2017 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2018 }
2019 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2020
2021 /**
2022 * qeth_send_control_data() - send control command to the card
2023 * @card: qeth_card structure pointer
2024 * @len: size of the command buffer
2025 * @iob: qeth_cmd_buffer pointer
2026 * @reply_cb: callback function pointer
2027 * @cb_card: pointer to the qeth_card structure
2028 * @cb_reply: pointer to the qeth_reply structure
2029 * @cb_cmd: pointer to the original iob for non-IPA
2030 * commands, or to the qeth_ipa_cmd structure
2031 * for the IPA commands.
2032 * @reply_param: private pointer passed to the callback
2033 *
2034 * Returns the value of the `return_code' field of the response
2035 * block returned from the hardware, or other error indication.
2036 * Value of zero indicates successful execution of the command.
2037 *
2038 * Callback function gets called one or more times, with cb_cmd
2039 * pointing to the response returned by the hardware. Callback
2040 * function must return non-zero if more reply blocks are expected,
2041 * and zero if the last or only reply block is received. Callback
2042 * function can get the value of the reply_param pointer from the
2043 * field 'param' of the structure qeth_reply.
2044 */
2045
qeth_send_control_data(struct qeth_card * card,int len,struct qeth_cmd_buffer * iob,int (* reply_cb)(struct qeth_card * cb_card,struct qeth_reply * cb_reply,unsigned long cb_cmd),void * reply_param)2046 int qeth_send_control_data(struct qeth_card *card, int len,
2047 struct qeth_cmd_buffer *iob,
2048 int (*reply_cb)(struct qeth_card *cb_card,
2049 struct qeth_reply *cb_reply,
2050 unsigned long cb_cmd),
2051 void *reply_param)
2052 {
2053 int rc;
2054 unsigned long flags;
2055 struct qeth_reply *reply = NULL;
2056 unsigned long timeout, event_timeout;
2057 struct qeth_ipa_cmd *cmd;
2058
2059 QETH_CARD_TEXT(card, 2, "sendctl");
2060
2061 if (card->read_or_write_problem) {
2062 qeth_release_buffer(iob->channel, iob);
2063 return -EIO;
2064 }
2065 reply = qeth_alloc_reply(card);
2066 if (!reply) {
2067 return -ENOMEM;
2068 }
2069 reply->callback = reply_cb;
2070 reply->param = reply_param;
2071 if (card->state == CARD_STATE_DOWN)
2072 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2073 else
2074 reply->seqno = card->seqno.ipa++;
2075 init_waitqueue_head(&reply->wait_q);
2076 spin_lock_irqsave(&card->lock, flags);
2077 list_add_tail(&reply->list, &card->cmd_waiter_list);
2078 spin_unlock_irqrestore(&card->lock, flags);
2079 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2080
2081 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2082 qeth_prepare_control_data(card, len, iob);
2083
2084 if (IS_IPA(iob->data))
2085 event_timeout = QETH_IPA_TIMEOUT;
2086 else
2087 event_timeout = QETH_TIMEOUT;
2088 timeout = jiffies + event_timeout;
2089
2090 QETH_CARD_TEXT(card, 6, "noirqpnd");
2091 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2092 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2093 (addr_t) iob, 0, 0);
2094 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2095 if (rc) {
2096 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2097 "ccw_device_start rc = %i\n",
2098 dev_name(&card->write.ccwdev->dev), rc);
2099 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2100 spin_lock_irqsave(&card->lock, flags);
2101 list_del_init(&reply->list);
2102 qeth_put_reply(reply);
2103 spin_unlock_irqrestore(&card->lock, flags);
2104 qeth_release_buffer(iob->channel, iob);
2105 atomic_set(&card->write.irq_pending, 0);
2106 wake_up(&card->wait_q);
2107 return rc;
2108 }
2109
2110 /* we have only one long running ipassist, since we can ensure
2111 process context of this command we can sleep */
2112 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2113 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2114 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2115 if (!wait_event_timeout(reply->wait_q,
2116 atomic_read(&reply->received), event_timeout))
2117 goto time_err;
2118 } else {
2119 while (!atomic_read(&reply->received)) {
2120 if (time_after(jiffies, timeout))
2121 goto time_err;
2122 cpu_relax();
2123 }
2124 }
2125
2126 if (reply->rc == -EIO)
2127 goto error;
2128 rc = reply->rc;
2129 qeth_put_reply(reply);
2130 return rc;
2131
2132 time_err:
2133 reply->rc = -ETIME;
2134 spin_lock_irqsave(&reply->card->lock, flags);
2135 list_del_init(&reply->list);
2136 spin_unlock_irqrestore(&reply->card->lock, flags);
2137 atomic_inc(&reply->received);
2138 error:
2139 atomic_set(&card->write.irq_pending, 0);
2140 qeth_release_buffer(iob->channel, iob);
2141 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2142 rc = reply->rc;
2143 qeth_put_reply(reply);
2144 return rc;
2145 }
2146 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2147
qeth_cm_enable_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2148 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2149 unsigned long data)
2150 {
2151 struct qeth_cmd_buffer *iob;
2152
2153 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2154
2155 iob = (struct qeth_cmd_buffer *) data;
2156 memcpy(&card->token.cm_filter_r,
2157 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2158 QETH_MPC_TOKEN_LENGTH);
2159 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2160 return 0;
2161 }
2162
qeth_cm_enable(struct qeth_card * card)2163 static int qeth_cm_enable(struct qeth_card *card)
2164 {
2165 int rc;
2166 struct qeth_cmd_buffer *iob;
2167
2168 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2169
2170 iob = qeth_wait_for_buffer(&card->write);
2171 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2172 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2173 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2174 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2175 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2176
2177 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2178 qeth_cm_enable_cb, NULL);
2179 return rc;
2180 }
2181
qeth_cm_setup_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2182 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2183 unsigned long data)
2184 {
2185
2186 struct qeth_cmd_buffer *iob;
2187
2188 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2189
2190 iob = (struct qeth_cmd_buffer *) data;
2191 memcpy(&card->token.cm_connection_r,
2192 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2193 QETH_MPC_TOKEN_LENGTH);
2194 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2195 return 0;
2196 }
2197
qeth_cm_setup(struct qeth_card * card)2198 static int qeth_cm_setup(struct qeth_card *card)
2199 {
2200 int rc;
2201 struct qeth_cmd_buffer *iob;
2202
2203 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2204
2205 iob = qeth_wait_for_buffer(&card->write);
2206 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2207 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2208 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2209 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2210 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2211 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2212 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2213 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2214 qeth_cm_setup_cb, NULL);
2215 return rc;
2216
2217 }
2218
qeth_get_initial_mtu_for_card(struct qeth_card * card)2219 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2220 {
2221 switch (card->info.type) {
2222 case QETH_CARD_TYPE_UNKNOWN:
2223 return 1500;
2224 case QETH_CARD_TYPE_IQD:
2225 return card->info.max_mtu;
2226 case QETH_CARD_TYPE_OSD:
2227 switch (card->info.link_type) {
2228 case QETH_LINK_TYPE_HSTR:
2229 case QETH_LINK_TYPE_LANE_TR:
2230 return 2000;
2231 default:
2232 return card->options.layer2 ? 1500 : 1492;
2233 }
2234 case QETH_CARD_TYPE_OSM:
2235 case QETH_CARD_TYPE_OSX:
2236 return card->options.layer2 ? 1500 : 1492;
2237 default:
2238 return 1500;
2239 }
2240 }
2241
qeth_get_mtu_outof_framesize(int framesize)2242 static inline int qeth_get_mtu_outof_framesize(int framesize)
2243 {
2244 switch (framesize) {
2245 case 0x4000:
2246 return 8192;
2247 case 0x6000:
2248 return 16384;
2249 case 0xa000:
2250 return 32768;
2251 case 0xffff:
2252 return 57344;
2253 default:
2254 return 0;
2255 }
2256 }
2257
qeth_mtu_is_valid(struct qeth_card * card,int mtu)2258 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2259 {
2260 switch (card->info.type) {
2261 case QETH_CARD_TYPE_OSD:
2262 case QETH_CARD_TYPE_OSM:
2263 case QETH_CARD_TYPE_OSX:
2264 case QETH_CARD_TYPE_IQD:
2265 return ((mtu >= 576) &&
2266 (mtu <= card->info.max_mtu));
2267 case QETH_CARD_TYPE_OSN:
2268 case QETH_CARD_TYPE_UNKNOWN:
2269 default:
2270 return 1;
2271 }
2272 }
2273
qeth_ulp_enable_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2274 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2275 unsigned long data)
2276 {
2277
2278 __u16 mtu, framesize;
2279 __u16 len;
2280 __u8 link_type;
2281 struct qeth_cmd_buffer *iob;
2282
2283 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2284
2285 iob = (struct qeth_cmd_buffer *) data;
2286 memcpy(&card->token.ulp_filter_r,
2287 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2288 QETH_MPC_TOKEN_LENGTH);
2289 if (card->info.type == QETH_CARD_TYPE_IQD) {
2290 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2291 mtu = qeth_get_mtu_outof_framesize(framesize);
2292 if (!mtu) {
2293 iob->rc = -EINVAL;
2294 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2295 return 0;
2296 }
2297 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2298 /* frame size has changed */
2299 if (card->dev &&
2300 ((card->dev->mtu == card->info.initial_mtu) ||
2301 (card->dev->mtu > mtu)))
2302 card->dev->mtu = mtu;
2303 qeth_free_qdio_buffers(card);
2304 }
2305 card->info.initial_mtu = mtu;
2306 card->info.max_mtu = mtu;
2307 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2308 } else {
2309 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2310 iob->data);
2311 card->info.initial_mtu = min(card->info.max_mtu,
2312 qeth_get_initial_mtu_for_card(card));
2313 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2314 }
2315
2316 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2317 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2318 memcpy(&link_type,
2319 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2320 card->info.link_type = link_type;
2321 } else
2322 card->info.link_type = 0;
2323 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2324 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2325 return 0;
2326 }
2327
qeth_ulp_enable(struct qeth_card * card)2328 static int qeth_ulp_enable(struct qeth_card *card)
2329 {
2330 int rc;
2331 char prot_type;
2332 struct qeth_cmd_buffer *iob;
2333
2334 /*FIXME: trace view callbacks*/
2335 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2336
2337 iob = qeth_wait_for_buffer(&card->write);
2338 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2339
2340 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2341 (__u8) card->info.portno;
2342 if (card->options.layer2)
2343 if (card->info.type == QETH_CARD_TYPE_OSN)
2344 prot_type = QETH_PROT_OSN2;
2345 else
2346 prot_type = QETH_PROT_LAYER2;
2347 else
2348 prot_type = QETH_PROT_TCPIP;
2349
2350 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2351 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2352 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2353 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2354 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2355 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2356 qeth_ulp_enable_cb, NULL);
2357 return rc;
2358
2359 }
2360
qeth_ulp_setup_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2361 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2362 unsigned long data)
2363 {
2364 struct qeth_cmd_buffer *iob;
2365
2366 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2367
2368 iob = (struct qeth_cmd_buffer *) data;
2369 memcpy(&card->token.ulp_connection_r,
2370 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2371 QETH_MPC_TOKEN_LENGTH);
2372 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2373 3)) {
2374 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2375 dev_err(&card->gdev->dev, "A connection could not be "
2376 "established because of an OLM limit\n");
2377 iob->rc = -EMLINK;
2378 }
2379 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2380 return 0;
2381 }
2382
qeth_ulp_setup(struct qeth_card * card)2383 static int qeth_ulp_setup(struct qeth_card *card)
2384 {
2385 int rc;
2386 __u16 temp;
2387 struct qeth_cmd_buffer *iob;
2388 struct ccw_dev_id dev_id;
2389
2390 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2391
2392 iob = qeth_wait_for_buffer(&card->write);
2393 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2394
2395 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2396 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2397 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2398 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2399 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2400 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2401
2402 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2403 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2404 temp = (card->info.cula << 8) + card->info.unit_addr2;
2405 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2406 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2407 qeth_ulp_setup_cb, NULL);
2408 return rc;
2409 }
2410
qeth_init_qdio_out_buf(struct qeth_qdio_out_q * q,int bidx)2411 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2412 {
2413 int rc;
2414 struct qeth_qdio_out_buffer *newbuf;
2415
2416 rc = 0;
2417 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2418 if (!newbuf) {
2419 rc = -ENOMEM;
2420 goto out;
2421 }
2422 newbuf->buffer = q->qdio_bufs[bidx];
2423 skb_queue_head_init(&newbuf->skb_list);
2424 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2425 newbuf->q = q;
2426 newbuf->aob = NULL;
2427 newbuf->next_pending = q->bufs[bidx];
2428 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2429 q->bufs[bidx] = newbuf;
2430 if (q->bufstates) {
2431 q->bufstates[bidx].user = newbuf;
2432 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2433 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2434 QETH_CARD_TEXT_(q->card, 2, "%lx",
2435 (long) newbuf->next_pending);
2436 }
2437 out:
2438 return rc;
2439 }
2440
qeth_free_qdio_out_buf(struct qeth_qdio_out_q * q)2441 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2442 {
2443 if (!q)
2444 return;
2445
2446 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2447 kfree(q);
2448 }
2449
qeth_alloc_qdio_out_buf(void)2450 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2451 {
2452 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2453
2454 if (!q)
2455 return NULL;
2456
2457 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2458 kfree(q);
2459 return NULL;
2460 }
2461 return q;
2462 }
2463
qeth_alloc_qdio_buffers(struct qeth_card * card)2464 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2465 {
2466 int i, j;
2467
2468 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2469
2470 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2471 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2472 return 0;
2473
2474 QETH_DBF_TEXT(SETUP, 2, "inq");
2475 card->qdio.in_q = qeth_alloc_qdio_queue();
2476 if (!card->qdio.in_q)
2477 goto out_nomem;
2478
2479 /* inbound buffer pool */
2480 if (qeth_alloc_buffer_pool(card))
2481 goto out_freeinq;
2482
2483 /* outbound */
2484 card->qdio.out_qs =
2485 kzalloc(card->qdio.no_out_queues *
2486 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2487 if (!card->qdio.out_qs)
2488 goto out_freepool;
2489 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2490 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2491 if (!card->qdio.out_qs[i])
2492 goto out_freeoutq;
2493 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2494 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2495 card->qdio.out_qs[i]->queue_no = i;
2496 /* give outbound qeth_qdio_buffers their qdio_buffers */
2497 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2498 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2499 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2500 goto out_freeoutqbufs;
2501 }
2502 }
2503
2504 /* completion */
2505 if (qeth_alloc_cq(card))
2506 goto out_freeoutq;
2507
2508 return 0;
2509
2510 out_freeoutqbufs:
2511 while (j > 0) {
2512 --j;
2513 kmem_cache_free(qeth_qdio_outbuf_cache,
2514 card->qdio.out_qs[i]->bufs[j]);
2515 card->qdio.out_qs[i]->bufs[j] = NULL;
2516 }
2517 out_freeoutq:
2518 while (i > 0) {
2519 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2520 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2521 }
2522 kfree(card->qdio.out_qs);
2523 card->qdio.out_qs = NULL;
2524 out_freepool:
2525 qeth_free_buffer_pool(card);
2526 out_freeinq:
2527 qeth_free_qdio_queue(card->qdio.in_q);
2528 card->qdio.in_q = NULL;
2529 out_nomem:
2530 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2531 return -ENOMEM;
2532 }
2533
qeth_free_qdio_buffers(struct qeth_card * card)2534 static void qeth_free_qdio_buffers(struct qeth_card *card)
2535 {
2536 int i, j;
2537
2538 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2539 QETH_QDIO_UNINITIALIZED)
2540 return;
2541
2542 qeth_free_cq(card);
2543 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2544 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2545 if (card->qdio.in_q->bufs[j].rx_skb)
2546 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2547 }
2548 qeth_free_qdio_queue(card->qdio.in_q);
2549 card->qdio.in_q = NULL;
2550 /* inbound buffer pool */
2551 qeth_free_buffer_pool(card);
2552 /* free outbound qdio_qs */
2553 if (card->qdio.out_qs) {
2554 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2555 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2556 qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2557 }
2558 kfree(card->qdio.out_qs);
2559 card->qdio.out_qs = NULL;
2560 }
2561 }
2562
qeth_create_qib_param_field(struct qeth_card * card,char * param_field)2563 static void qeth_create_qib_param_field(struct qeth_card *card,
2564 char *param_field)
2565 {
2566
2567 param_field[0] = _ascebc['P'];
2568 param_field[1] = _ascebc['C'];
2569 param_field[2] = _ascebc['I'];
2570 param_field[3] = _ascebc['T'];
2571 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2572 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2573 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2574 }
2575
qeth_create_qib_param_field_blkt(struct qeth_card * card,char * param_field)2576 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2577 char *param_field)
2578 {
2579 param_field[16] = _ascebc['B'];
2580 param_field[17] = _ascebc['L'];
2581 param_field[18] = _ascebc['K'];
2582 param_field[19] = _ascebc['T'];
2583 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2584 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2585 *((unsigned int *) (¶m_field[28])) =
2586 card->info.blkt.inter_packet_jumbo;
2587 }
2588
qeth_qdio_activate(struct qeth_card * card)2589 static int qeth_qdio_activate(struct qeth_card *card)
2590 {
2591 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2592 return qdio_activate(CARD_DDEV(card));
2593 }
2594
qeth_dm_act(struct qeth_card * card)2595 static int qeth_dm_act(struct qeth_card *card)
2596 {
2597 int rc;
2598 struct qeth_cmd_buffer *iob;
2599
2600 QETH_DBF_TEXT(SETUP, 2, "dmact");
2601
2602 iob = qeth_wait_for_buffer(&card->write);
2603 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2604
2605 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2606 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2607 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2608 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2609 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2610 return rc;
2611 }
2612
qeth_mpc_initialize(struct qeth_card * card)2613 static int qeth_mpc_initialize(struct qeth_card *card)
2614 {
2615 int rc;
2616
2617 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2618
2619 rc = qeth_issue_next_read(card);
2620 if (rc) {
2621 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2622 return rc;
2623 }
2624 rc = qeth_cm_enable(card);
2625 if (rc) {
2626 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2627 goto out_qdio;
2628 }
2629 rc = qeth_cm_setup(card);
2630 if (rc) {
2631 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2632 goto out_qdio;
2633 }
2634 rc = qeth_ulp_enable(card);
2635 if (rc) {
2636 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2637 goto out_qdio;
2638 }
2639 rc = qeth_ulp_setup(card);
2640 if (rc) {
2641 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2642 goto out_qdio;
2643 }
2644 rc = qeth_alloc_qdio_buffers(card);
2645 if (rc) {
2646 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2647 goto out_qdio;
2648 }
2649 rc = qeth_qdio_establish(card);
2650 if (rc) {
2651 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2652 qeth_free_qdio_buffers(card);
2653 goto out_qdio;
2654 }
2655 rc = qeth_qdio_activate(card);
2656 if (rc) {
2657 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2658 goto out_qdio;
2659 }
2660 rc = qeth_dm_act(card);
2661 if (rc) {
2662 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2663 goto out_qdio;
2664 }
2665
2666 return 0;
2667 out_qdio:
2668 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2669 qdio_free(CARD_DDEV(card));
2670 return rc;
2671 }
2672
qeth_print_status_message(struct qeth_card * card)2673 void qeth_print_status_message(struct qeth_card *card)
2674 {
2675 switch (card->info.type) {
2676 case QETH_CARD_TYPE_OSD:
2677 case QETH_CARD_TYPE_OSM:
2678 case QETH_CARD_TYPE_OSX:
2679 /* VM will use a non-zero first character
2680 * to indicate a HiperSockets like reporting
2681 * of the level OSA sets the first character to zero
2682 * */
2683 if (!card->info.mcl_level[0]) {
2684 sprintf(card->info.mcl_level, "%02x%02x",
2685 card->info.mcl_level[2],
2686 card->info.mcl_level[3]);
2687
2688 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2689 break;
2690 }
2691 /* fallthrough */
2692 case QETH_CARD_TYPE_IQD:
2693 if ((card->info.guestlan) ||
2694 (card->info.mcl_level[0] & 0x80)) {
2695 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2696 card->info.mcl_level[0]];
2697 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2698 card->info.mcl_level[1]];
2699 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2700 card->info.mcl_level[2]];
2701 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2702 card->info.mcl_level[3]];
2703 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2704 }
2705 break;
2706 default:
2707 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2708 }
2709 dev_info(&card->gdev->dev,
2710 "Device is a%s card%s%s%s\nwith link type %s.\n",
2711 qeth_get_cardname(card),
2712 (card->info.mcl_level[0]) ? " (level: " : "",
2713 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2714 (card->info.mcl_level[0]) ? ")" : "",
2715 qeth_get_cardname_short(card));
2716 }
2717 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2718
qeth_initialize_working_pool_list(struct qeth_card * card)2719 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2720 {
2721 struct qeth_buffer_pool_entry *entry;
2722
2723 QETH_CARD_TEXT(card, 5, "inwrklst");
2724
2725 list_for_each_entry(entry,
2726 &card->qdio.init_pool.entry_list, init_list) {
2727 qeth_put_buffer_pool_entry(card, entry);
2728 }
2729 }
2730
qeth_find_free_buffer_pool_entry(struct qeth_card * card)2731 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2732 struct qeth_card *card)
2733 {
2734 struct list_head *plh;
2735 struct qeth_buffer_pool_entry *entry;
2736 int i, free;
2737 struct page *page;
2738
2739 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2740 return NULL;
2741
2742 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2743 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2744 free = 1;
2745 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2746 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2747 free = 0;
2748 break;
2749 }
2750 }
2751 if (free) {
2752 list_del_init(&entry->list);
2753 return entry;
2754 }
2755 }
2756
2757 /* no free buffer in pool so take first one and swap pages */
2758 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2759 struct qeth_buffer_pool_entry, list);
2760 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2761 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2762 page = alloc_page(GFP_ATOMIC);
2763 if (!page) {
2764 return NULL;
2765 } else {
2766 free_page((unsigned long)entry->elements[i]);
2767 entry->elements[i] = page_address(page);
2768 if (card->options.performance_stats)
2769 card->perf_stats.sg_alloc_page_rx++;
2770 }
2771 }
2772 }
2773 list_del_init(&entry->list);
2774 return entry;
2775 }
2776
qeth_init_input_buffer(struct qeth_card * card,struct qeth_qdio_buffer * buf)2777 static int qeth_init_input_buffer(struct qeth_card *card,
2778 struct qeth_qdio_buffer *buf)
2779 {
2780 struct qeth_buffer_pool_entry *pool_entry;
2781 int i;
2782
2783 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2784 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2785 if (!buf->rx_skb)
2786 return 1;
2787 }
2788
2789 pool_entry = qeth_find_free_buffer_pool_entry(card);
2790 if (!pool_entry)
2791 return 1;
2792
2793 /*
2794 * since the buffer is accessed only from the input_tasklet
2795 * there shouldn't be a need to synchronize; also, since we use
2796 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2797 * buffers
2798 */
2799
2800 buf->pool_entry = pool_entry;
2801 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2802 buf->buffer->element[i].length = PAGE_SIZE;
2803 buf->buffer->element[i].addr = pool_entry->elements[i];
2804 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2805 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2806 else
2807 buf->buffer->element[i].eflags = 0;
2808 buf->buffer->element[i].sflags = 0;
2809 }
2810 return 0;
2811 }
2812
qeth_init_qdio_queues(struct qeth_card * card)2813 int qeth_init_qdio_queues(struct qeth_card *card)
2814 {
2815 int i, j;
2816 int rc;
2817
2818 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2819
2820 /* inbound queue */
2821 qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2822 QDIO_MAX_BUFFERS_PER_Q);
2823 qeth_initialize_working_pool_list(card);
2824 /*give only as many buffers to hardware as we have buffer pool entries*/
2825 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2826 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2827 card->qdio.in_q->next_buf_to_init =
2828 card->qdio.in_buf_pool.buf_count - 1;
2829 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2830 card->qdio.in_buf_pool.buf_count - 1);
2831 if (rc) {
2832 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2833 return rc;
2834 }
2835
2836 /* completion */
2837 rc = qeth_cq_init(card);
2838 if (rc) {
2839 return rc;
2840 }
2841
2842 /* outbound queue */
2843 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2844 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2845 QDIO_MAX_BUFFERS_PER_Q);
2846 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2847 qeth_clear_output_buffer(card->qdio.out_qs[i],
2848 card->qdio.out_qs[i]->bufs[j],
2849 QETH_QDIO_BUF_EMPTY);
2850 }
2851 card->qdio.out_qs[i]->card = card;
2852 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2853 card->qdio.out_qs[i]->do_pack = 0;
2854 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2855 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2856 atomic_set(&card->qdio.out_qs[i]->state,
2857 QETH_OUT_Q_UNLOCKED);
2858 }
2859 return 0;
2860 }
2861 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2862
qeth_get_ipa_adp_type(enum qeth_link_types link_type)2863 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2864 {
2865 switch (link_type) {
2866 case QETH_LINK_TYPE_HSTR:
2867 return 2;
2868 default:
2869 return 1;
2870 }
2871 }
2872
qeth_fill_ipacmd_header(struct qeth_card * card,struct qeth_ipa_cmd * cmd,__u8 command,enum qeth_prot_versions prot)2873 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2874 struct qeth_ipa_cmd *cmd, __u8 command,
2875 enum qeth_prot_versions prot)
2876 {
2877 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2878 cmd->hdr.command = command;
2879 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2880 cmd->hdr.seqno = card->seqno.ipa;
2881 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2882 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2883 if (card->options.layer2)
2884 cmd->hdr.prim_version_no = 2;
2885 else
2886 cmd->hdr.prim_version_no = 1;
2887 cmd->hdr.param_count = 1;
2888 cmd->hdr.prot_version = prot;
2889 cmd->hdr.ipa_supported = 0;
2890 cmd->hdr.ipa_enabled = 0;
2891 }
2892
qeth_get_ipacmd_buffer(struct qeth_card * card,enum qeth_ipa_cmds ipacmd,enum qeth_prot_versions prot)2893 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2894 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2895 {
2896 struct qeth_cmd_buffer *iob;
2897 struct qeth_ipa_cmd *cmd;
2898
2899 iob = qeth_get_buffer(&card->write);
2900 if (iob) {
2901 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2902 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2903 } else {
2904 dev_warn(&card->gdev->dev,
2905 "The qeth driver ran out of channel command buffers\n");
2906 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2907 dev_name(&card->gdev->dev));
2908 }
2909
2910 return iob;
2911 }
2912 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2913
qeth_prepare_ipa_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob,char prot_type)2914 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2915 char prot_type)
2916 {
2917 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2918 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2919 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2920 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2921 }
2922 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2923
2924 /**
2925 * qeth_send_ipa_cmd() - send an IPA command
2926 *
2927 * See qeth_send_control_data() for explanation of the arguments.
2928 */
2929
qeth_send_ipa_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob,int (* reply_cb)(struct qeth_card *,struct qeth_reply *,unsigned long),void * reply_param)2930 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2931 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2932 unsigned long),
2933 void *reply_param)
2934 {
2935 int rc;
2936 char prot_type;
2937
2938 QETH_CARD_TEXT(card, 4, "sendipa");
2939
2940 if (card->options.layer2)
2941 if (card->info.type == QETH_CARD_TYPE_OSN)
2942 prot_type = QETH_PROT_OSN2;
2943 else
2944 prot_type = QETH_PROT_LAYER2;
2945 else
2946 prot_type = QETH_PROT_TCPIP;
2947 qeth_prepare_ipa_cmd(card, iob, prot_type);
2948 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2949 iob, reply_cb, reply_param);
2950 if (rc == -ETIME) {
2951 qeth_clear_ipacmd_list(card);
2952 qeth_schedule_recovery(card);
2953 }
2954 return rc;
2955 }
2956 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2957
qeth_send_startlan(struct qeth_card * card)2958 int qeth_send_startlan(struct qeth_card *card)
2959 {
2960 int rc;
2961 struct qeth_cmd_buffer *iob;
2962
2963 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2964
2965 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2966 if (!iob)
2967 return -ENOMEM;
2968 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2969 return rc;
2970 }
2971 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2972
qeth_default_setadapterparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2973 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2974 struct qeth_reply *reply, unsigned long data)
2975 {
2976 struct qeth_ipa_cmd *cmd;
2977
2978 QETH_CARD_TEXT(card, 4, "defadpcb");
2979
2980 cmd = (struct qeth_ipa_cmd *) data;
2981 if (cmd->hdr.return_code == 0)
2982 cmd->hdr.return_code =
2983 cmd->data.setadapterparms.hdr.return_code;
2984 return 0;
2985 }
2986
qeth_query_setadapterparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2987 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2988 struct qeth_reply *reply, unsigned long data)
2989 {
2990 struct qeth_ipa_cmd *cmd;
2991
2992 QETH_CARD_TEXT(card, 3, "quyadpcb");
2993
2994 cmd = (struct qeth_ipa_cmd *) data;
2995 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2996 card->info.link_type =
2997 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2998 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2999 }
3000 card->options.adp.supported_funcs =
3001 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3002 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3003 }
3004
qeth_get_adapter_cmd(struct qeth_card * card,__u32 command,__u32 cmdlen)3005 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3006 __u32 command, __u32 cmdlen)
3007 {
3008 struct qeth_cmd_buffer *iob;
3009 struct qeth_ipa_cmd *cmd;
3010
3011 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3012 QETH_PROT_IPV4);
3013 if (iob) {
3014 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3015 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3016 cmd->data.setadapterparms.hdr.command_code = command;
3017 cmd->data.setadapterparms.hdr.used_total = 1;
3018 cmd->data.setadapterparms.hdr.seq_no = 1;
3019 }
3020
3021 return iob;
3022 }
3023
qeth_query_setadapterparms(struct qeth_card * card)3024 int qeth_query_setadapterparms(struct qeth_card *card)
3025 {
3026 int rc;
3027 struct qeth_cmd_buffer *iob;
3028
3029 QETH_CARD_TEXT(card, 3, "queryadp");
3030 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3031 sizeof(struct qeth_ipacmd_setadpparms));
3032 if (!iob)
3033 return -ENOMEM;
3034 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3035 return rc;
3036 }
3037 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3038
qeth_query_ipassists_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3039 static int qeth_query_ipassists_cb(struct qeth_card *card,
3040 struct qeth_reply *reply, unsigned long data)
3041 {
3042 struct qeth_ipa_cmd *cmd;
3043
3044 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3045
3046 cmd = (struct qeth_ipa_cmd *) data;
3047
3048 switch (cmd->hdr.return_code) {
3049 case IPA_RC_NOTSUPP:
3050 case IPA_RC_L2_UNSUPPORTED_CMD:
3051 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3052 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3053 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3054 return -0;
3055 default:
3056 if (cmd->hdr.return_code) {
3057 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3058 "rc=%d\n",
3059 dev_name(&card->gdev->dev),
3060 cmd->hdr.return_code);
3061 return 0;
3062 }
3063 }
3064
3065 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3066 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3067 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3068 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3069 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3070 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3071 } else
3072 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3073 "\n", dev_name(&card->gdev->dev));
3074 return 0;
3075 }
3076
qeth_query_ipassists(struct qeth_card * card,enum qeth_prot_versions prot)3077 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3078 {
3079 int rc;
3080 struct qeth_cmd_buffer *iob;
3081
3082 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3083 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3084 if (!iob)
3085 return -ENOMEM;
3086 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3087 return rc;
3088 }
3089 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3090
qeth_query_switch_attributes_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3091 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3092 struct qeth_reply *reply, unsigned long data)
3093 {
3094 struct qeth_ipa_cmd *cmd;
3095 struct qeth_switch_info *sw_info;
3096 struct qeth_query_switch_attributes *attrs;
3097
3098 QETH_CARD_TEXT(card, 2, "qswiatcb");
3099 cmd = (struct qeth_ipa_cmd *) data;
3100 sw_info = (struct qeth_switch_info *)reply->param;
3101 if (cmd->data.setadapterparms.hdr.return_code == 0) {
3102 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3103 sw_info->capabilities = attrs->capabilities;
3104 sw_info->settings = attrs->settings;
3105 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3106 sw_info->settings);
3107 }
3108 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3109
3110 return 0;
3111 }
3112
qeth_query_switch_attributes(struct qeth_card * card,struct qeth_switch_info * sw_info)3113 int qeth_query_switch_attributes(struct qeth_card *card,
3114 struct qeth_switch_info *sw_info)
3115 {
3116 struct qeth_cmd_buffer *iob;
3117
3118 QETH_CARD_TEXT(card, 2, "qswiattr");
3119 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3120 return -EOPNOTSUPP;
3121 if (!netif_carrier_ok(card->dev))
3122 return -ENOMEDIUM;
3123 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3124 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3125 if (!iob)
3126 return -ENOMEM;
3127 return qeth_send_ipa_cmd(card, iob,
3128 qeth_query_switch_attributes_cb, sw_info);
3129 }
3130 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3131
qeth_query_setdiagass_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3132 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3133 struct qeth_reply *reply, unsigned long data)
3134 {
3135 struct qeth_ipa_cmd *cmd;
3136 __u16 rc;
3137
3138 cmd = (struct qeth_ipa_cmd *)data;
3139 rc = cmd->hdr.return_code;
3140 if (rc)
3141 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3142 else
3143 card->info.diagass_support = cmd->data.diagass.ext;
3144 return 0;
3145 }
3146
qeth_query_setdiagass(struct qeth_card * card)3147 static int qeth_query_setdiagass(struct qeth_card *card)
3148 {
3149 struct qeth_cmd_buffer *iob;
3150 struct qeth_ipa_cmd *cmd;
3151
3152 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3153 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3154 if (!iob)
3155 return -ENOMEM;
3156 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3157 cmd->data.diagass.subcmd_len = 16;
3158 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3159 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3160 }
3161
qeth_get_trap_id(struct qeth_card * card,struct qeth_trap_id * tid)3162 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3163 {
3164 unsigned long info = get_zeroed_page(GFP_KERNEL);
3165 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3166 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3167 struct ccw_dev_id ccwid;
3168 int level;
3169
3170 tid->chpid = card->info.chpid;
3171 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3172 tid->ssid = ccwid.ssid;
3173 tid->devno = ccwid.devno;
3174 if (!info)
3175 return;
3176 level = stsi(NULL, 0, 0, 0);
3177 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3178 tid->lparnr = info222->lpar_number;
3179 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3180 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3181 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3182 }
3183 free_page(info);
3184 return;
3185 }
3186
qeth_hw_trap_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3187 static int qeth_hw_trap_cb(struct qeth_card *card,
3188 struct qeth_reply *reply, unsigned long data)
3189 {
3190 struct qeth_ipa_cmd *cmd;
3191 __u16 rc;
3192
3193 cmd = (struct qeth_ipa_cmd *)data;
3194 rc = cmd->hdr.return_code;
3195 if (rc)
3196 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3197 return 0;
3198 }
3199
qeth_hw_trap(struct qeth_card * card,enum qeth_diags_trap_action action)3200 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3201 {
3202 struct qeth_cmd_buffer *iob;
3203 struct qeth_ipa_cmd *cmd;
3204
3205 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3206 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3207 if (!iob)
3208 return -ENOMEM;
3209 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3210 cmd->data.diagass.subcmd_len = 80;
3211 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3212 cmd->data.diagass.type = 1;
3213 cmd->data.diagass.action = action;
3214 switch (action) {
3215 case QETH_DIAGS_TRAP_ARM:
3216 cmd->data.diagass.options = 0x0003;
3217 cmd->data.diagass.ext = 0x00010000 +
3218 sizeof(struct qeth_trap_id);
3219 qeth_get_trap_id(card,
3220 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3221 break;
3222 case QETH_DIAGS_TRAP_DISARM:
3223 cmd->data.diagass.options = 0x0001;
3224 break;
3225 case QETH_DIAGS_TRAP_CAPTURE:
3226 break;
3227 }
3228 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3229 }
3230 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3231
qeth_check_qdio_errors(struct qeth_card * card,struct qdio_buffer * buf,unsigned int qdio_error,const char * dbftext)3232 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3233 unsigned int qdio_error, const char *dbftext)
3234 {
3235 if (qdio_error) {
3236 QETH_CARD_TEXT(card, 2, dbftext);
3237 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3238 buf->element[15].sflags);
3239 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3240 buf->element[14].sflags);
3241 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3242 if ((buf->element[15].sflags) == 0x12) {
3243 card->stats.rx_dropped++;
3244 return 0;
3245 } else
3246 return 1;
3247 }
3248 return 0;
3249 }
3250 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3251
qeth_buffer_reclaim_work(struct work_struct * work)3252 static void qeth_buffer_reclaim_work(struct work_struct *work)
3253 {
3254 struct qeth_card *card = container_of(work, struct qeth_card,
3255 buffer_reclaim_work.work);
3256
3257 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3258 qeth_queue_input_buffer(card, card->reclaim_index);
3259 }
3260
qeth_queue_input_buffer(struct qeth_card * card,int index)3261 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3262 {
3263 struct qeth_qdio_q *queue = card->qdio.in_q;
3264 struct list_head *lh;
3265 int count;
3266 int i;
3267 int rc;
3268 int newcount = 0;
3269
3270 count = (index < queue->next_buf_to_init)?
3271 card->qdio.in_buf_pool.buf_count -
3272 (queue->next_buf_to_init - index) :
3273 card->qdio.in_buf_pool.buf_count -
3274 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3275 /* only requeue at a certain threshold to avoid SIGAs */
3276 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3277 for (i = queue->next_buf_to_init;
3278 i < queue->next_buf_to_init + count; ++i) {
3279 if (qeth_init_input_buffer(card,
3280 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3281 break;
3282 } else {
3283 newcount++;
3284 }
3285 }
3286
3287 if (newcount < count) {
3288 /* we are in memory shortage so we switch back to
3289 traditional skb allocation and drop packages */
3290 atomic_set(&card->force_alloc_skb, 3);
3291 count = newcount;
3292 } else {
3293 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3294 }
3295
3296 if (!count) {
3297 i = 0;
3298 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3299 i++;
3300 if (i == card->qdio.in_buf_pool.buf_count) {
3301 QETH_CARD_TEXT(card, 2, "qsarbw");
3302 card->reclaim_index = index;
3303 schedule_delayed_work(
3304 &card->buffer_reclaim_work,
3305 QETH_RECLAIM_WORK_TIME);
3306 }
3307 return;
3308 }
3309
3310 /*
3311 * according to old code it should be avoided to requeue all
3312 * 128 buffers in order to benefit from PCI avoidance.
3313 * this function keeps at least one buffer (the buffer at
3314 * 'index') un-requeued -> this buffer is the first buffer that
3315 * will be requeued the next time
3316 */
3317 if (card->options.performance_stats) {
3318 card->perf_stats.inbound_do_qdio_cnt++;
3319 card->perf_stats.inbound_do_qdio_start_time =
3320 qeth_get_micros();
3321 }
3322 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3323 queue->next_buf_to_init, count);
3324 if (card->options.performance_stats)
3325 card->perf_stats.inbound_do_qdio_time +=
3326 qeth_get_micros() -
3327 card->perf_stats.inbound_do_qdio_start_time;
3328 if (rc) {
3329 QETH_CARD_TEXT(card, 2, "qinberr");
3330 }
3331 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3332 QDIO_MAX_BUFFERS_PER_Q;
3333 }
3334 }
3335 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3336
qeth_handle_send_error(struct qeth_card * card,struct qeth_qdio_out_buffer * buffer,unsigned int qdio_err)3337 static int qeth_handle_send_error(struct qeth_card *card,
3338 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3339 {
3340 int sbalf15 = buffer->buffer->element[15].sflags;
3341
3342 QETH_CARD_TEXT(card, 6, "hdsnderr");
3343 if (card->info.type == QETH_CARD_TYPE_IQD) {
3344 if (sbalf15 == 0) {
3345 qdio_err = 0;
3346 } else {
3347 qdio_err = 1;
3348 }
3349 }
3350 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3351
3352 if (!qdio_err)
3353 return QETH_SEND_ERROR_NONE;
3354
3355 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3356 return QETH_SEND_ERROR_RETRY;
3357
3358 QETH_CARD_TEXT(card, 1, "lnkfail");
3359 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3360 (u16)qdio_err, (u8)sbalf15);
3361 return QETH_SEND_ERROR_LINK_FAILURE;
3362 }
3363
3364 /*
3365 * Switched to packing state if the number of used buffers on a queue
3366 * reaches a certain limit.
3367 */
qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q * queue)3368 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3369 {
3370 if (!queue->do_pack) {
3371 if (atomic_read(&queue->used_buffers)
3372 >= QETH_HIGH_WATERMARK_PACK){
3373 /* switch non-PACKING -> PACKING */
3374 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3375 if (queue->card->options.performance_stats)
3376 queue->card->perf_stats.sc_dp_p++;
3377 queue->do_pack = 1;
3378 }
3379 }
3380 }
3381
3382 /*
3383 * Switches from packing to non-packing mode. If there is a packing
3384 * buffer on the queue this buffer will be prepared to be flushed.
3385 * In that case 1 is returned to inform the caller. If no buffer
3386 * has to be flushed, zero is returned.
3387 */
qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q * queue)3388 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3389 {
3390 struct qeth_qdio_out_buffer *buffer;
3391 int flush_count = 0;
3392
3393 if (queue->do_pack) {
3394 if (atomic_read(&queue->used_buffers)
3395 <= QETH_LOW_WATERMARK_PACK) {
3396 /* switch PACKING -> non-PACKING */
3397 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3398 if (queue->card->options.performance_stats)
3399 queue->card->perf_stats.sc_p_dp++;
3400 queue->do_pack = 0;
3401 /* flush packing buffers */
3402 buffer = queue->bufs[queue->next_buf_to_fill];
3403 if ((atomic_read(&buffer->state) ==
3404 QETH_QDIO_BUF_EMPTY) &&
3405 (buffer->next_element_to_fill > 0)) {
3406 atomic_set(&buffer->state,
3407 QETH_QDIO_BUF_PRIMED);
3408 flush_count++;
3409 queue->next_buf_to_fill =
3410 (queue->next_buf_to_fill + 1) %
3411 QDIO_MAX_BUFFERS_PER_Q;
3412 }
3413 }
3414 }
3415 return flush_count;
3416 }
3417
3418
3419 /*
3420 * Called to flush a packing buffer if no more pci flags are on the queue.
3421 * Checks if there is a packing buffer and prepares it to be flushed.
3422 * In that case returns 1, otherwise zero.
3423 */
qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q * queue)3424 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3425 {
3426 struct qeth_qdio_out_buffer *buffer;
3427
3428 buffer = queue->bufs[queue->next_buf_to_fill];
3429 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3430 (buffer->next_element_to_fill > 0)) {
3431 /* it's a packing buffer */
3432 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3433 queue->next_buf_to_fill =
3434 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3435 return 1;
3436 }
3437 return 0;
3438 }
3439
qeth_flush_buffers(struct qeth_qdio_out_q * queue,int index,int count)3440 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3441 int count)
3442 {
3443 struct qeth_qdio_out_buffer *buf;
3444 int rc;
3445 int i;
3446 unsigned int qdio_flags;
3447
3448 for (i = index; i < index + count; ++i) {
3449 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3450 buf = queue->bufs[bidx];
3451 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3452 SBAL_EFLAGS_LAST_ENTRY;
3453
3454 if (queue->bufstates)
3455 queue->bufstates[bidx].user = buf;
3456
3457 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3458 continue;
3459
3460 if (!queue->do_pack) {
3461 if ((atomic_read(&queue->used_buffers) >=
3462 (QETH_HIGH_WATERMARK_PACK -
3463 QETH_WATERMARK_PACK_FUZZ)) &&
3464 !atomic_read(&queue->set_pci_flags_count)) {
3465 /* it's likely that we'll go to packing
3466 * mode soon */
3467 atomic_inc(&queue->set_pci_flags_count);
3468 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3469 }
3470 } else {
3471 if (!atomic_read(&queue->set_pci_flags_count)) {
3472 /*
3473 * there's no outstanding PCI any more, so we
3474 * have to request a PCI to be sure the the PCI
3475 * will wake at some time in the future then we
3476 * can flush packed buffers that might still be
3477 * hanging around, which can happen if no
3478 * further send was requested by the stack
3479 */
3480 atomic_inc(&queue->set_pci_flags_count);
3481 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3482 }
3483 }
3484 }
3485
3486 queue->card->dev->trans_start = jiffies;
3487 if (queue->card->options.performance_stats) {
3488 queue->card->perf_stats.outbound_do_qdio_cnt++;
3489 queue->card->perf_stats.outbound_do_qdio_start_time =
3490 qeth_get_micros();
3491 }
3492 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3493 if (atomic_read(&queue->set_pci_flags_count))
3494 qdio_flags |= QDIO_FLAG_PCI_OUT;
3495 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3496 queue->queue_no, index, count);
3497 if (queue->card->options.performance_stats)
3498 queue->card->perf_stats.outbound_do_qdio_time +=
3499 qeth_get_micros() -
3500 queue->card->perf_stats.outbound_do_qdio_start_time;
3501 atomic_add(count, &queue->used_buffers);
3502 if (rc) {
3503 queue->card->stats.tx_errors += count;
3504 /* ignore temporary SIGA errors without busy condition */
3505 if (rc == -ENOBUFS)
3506 return;
3507 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3508 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3509 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3510 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3511 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3512
3513 /* this must not happen under normal circumstances. if it
3514 * happens something is really wrong -> recover */
3515 qeth_schedule_recovery(queue->card);
3516 return;
3517 }
3518 if (queue->card->options.performance_stats)
3519 queue->card->perf_stats.bufs_sent += count;
3520 }
3521
qeth_check_outbound_queue(struct qeth_qdio_out_q * queue)3522 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3523 {
3524 int index;
3525 int flush_cnt = 0;
3526 int q_was_packing = 0;
3527
3528 /*
3529 * check if weed have to switch to non-packing mode or if
3530 * we have to get a pci flag out on the queue
3531 */
3532 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3533 !atomic_read(&queue->set_pci_flags_count)) {
3534 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3535 QETH_OUT_Q_UNLOCKED) {
3536 /*
3537 * If we get in here, there was no action in
3538 * do_send_packet. So, we check if there is a
3539 * packing buffer to be flushed here.
3540 */
3541 netif_stop_queue(queue->card->dev);
3542 index = queue->next_buf_to_fill;
3543 q_was_packing = queue->do_pack;
3544 /* queue->do_pack may change */
3545 barrier();
3546 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3547 if (!flush_cnt &&
3548 !atomic_read(&queue->set_pci_flags_count))
3549 flush_cnt +=
3550 qeth_flush_buffers_on_no_pci(queue);
3551 if (queue->card->options.performance_stats &&
3552 q_was_packing)
3553 queue->card->perf_stats.bufs_sent_pack +=
3554 flush_cnt;
3555 if (flush_cnt)
3556 qeth_flush_buffers(queue, index, flush_cnt);
3557 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3558 }
3559 }
3560 }
3561
qeth_qdio_start_poll(struct ccw_device * ccwdev,int queue,unsigned long card_ptr)3562 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3563 unsigned long card_ptr)
3564 {
3565 struct qeth_card *card = (struct qeth_card *)card_ptr;
3566
3567 if (card->dev && (card->dev->flags & IFF_UP))
3568 napi_schedule(&card->napi);
3569 }
3570 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3571
qeth_configure_cq(struct qeth_card * card,enum qeth_cq cq)3572 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3573 {
3574 int rc;
3575
3576 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3577 rc = -1;
3578 goto out;
3579 } else {
3580 if (card->options.cq == cq) {
3581 rc = 0;
3582 goto out;
3583 }
3584
3585 if (card->state != CARD_STATE_DOWN &&
3586 card->state != CARD_STATE_RECOVER) {
3587 rc = -1;
3588 goto out;
3589 }
3590
3591 qeth_free_qdio_buffers(card);
3592 card->options.cq = cq;
3593 rc = 0;
3594 }
3595 out:
3596 return rc;
3597
3598 }
3599 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3600
3601
qeth_qdio_cq_handler(struct qeth_card * card,unsigned int qdio_err,unsigned int queue,int first_element,int count)3602 static void qeth_qdio_cq_handler(struct qeth_card *card,
3603 unsigned int qdio_err,
3604 unsigned int queue, int first_element, int count) {
3605 struct qeth_qdio_q *cq = card->qdio.c_q;
3606 int i;
3607 int rc;
3608
3609 if (!qeth_is_cq(card, queue))
3610 goto out;
3611
3612 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3613 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3614 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3615
3616 if (qdio_err) {
3617 netif_stop_queue(card->dev);
3618 qeth_schedule_recovery(card);
3619 goto out;
3620 }
3621
3622 if (card->options.performance_stats) {
3623 card->perf_stats.cq_cnt++;
3624 card->perf_stats.cq_start_time = qeth_get_micros();
3625 }
3626
3627 for (i = first_element; i < first_element + count; ++i) {
3628 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3629 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3630 int e;
3631
3632 e = 0;
3633 while (buffer->element[e].addr) {
3634 unsigned long phys_aob_addr;
3635
3636 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3637 qeth_qdio_handle_aob(card, phys_aob_addr);
3638 buffer->element[e].addr = NULL;
3639 buffer->element[e].eflags = 0;
3640 buffer->element[e].sflags = 0;
3641 buffer->element[e].length = 0;
3642
3643 ++e;
3644 }
3645
3646 buffer->element[15].eflags = 0;
3647 buffer->element[15].sflags = 0;
3648 }
3649 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3650 card->qdio.c_q->next_buf_to_init,
3651 count);
3652 if (rc) {
3653 dev_warn(&card->gdev->dev,
3654 "QDIO reported an error, rc=%i\n", rc);
3655 QETH_CARD_TEXT(card, 2, "qcqherr");
3656 }
3657 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3658 + count) % QDIO_MAX_BUFFERS_PER_Q;
3659
3660 netif_wake_queue(card->dev);
3661
3662 if (card->options.performance_stats) {
3663 int delta_t = qeth_get_micros();
3664 delta_t -= card->perf_stats.cq_start_time;
3665 card->perf_stats.cq_time += delta_t;
3666 }
3667 out:
3668 return;
3669 }
3670
qeth_qdio_input_handler(struct ccw_device * ccwdev,unsigned int qdio_err,unsigned int queue,int first_elem,int count,unsigned long card_ptr)3671 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3672 unsigned int queue, int first_elem, int count,
3673 unsigned long card_ptr)
3674 {
3675 struct qeth_card *card = (struct qeth_card *)card_ptr;
3676
3677 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3678 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3679
3680 if (qeth_is_cq(card, queue))
3681 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3682 else if (qdio_err)
3683 qeth_schedule_recovery(card);
3684
3685
3686 }
3687 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3688
qeth_qdio_output_handler(struct ccw_device * ccwdev,unsigned int qdio_error,int __queue,int first_element,int count,unsigned long card_ptr)3689 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3690 unsigned int qdio_error, int __queue, int first_element,
3691 int count, unsigned long card_ptr)
3692 {
3693 struct qeth_card *card = (struct qeth_card *) card_ptr;
3694 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3695 struct qeth_qdio_out_buffer *buffer;
3696 int i;
3697
3698 QETH_CARD_TEXT(card, 6, "qdouhdl");
3699 if (qdio_error & QDIO_ERROR_FATAL) {
3700 QETH_CARD_TEXT(card, 2, "achkcond");
3701 netif_stop_queue(card->dev);
3702 qeth_schedule_recovery(card);
3703 return;
3704 }
3705 if (card->options.performance_stats) {
3706 card->perf_stats.outbound_handler_cnt++;
3707 card->perf_stats.outbound_handler_start_time =
3708 qeth_get_micros();
3709 }
3710 for (i = first_element; i < (first_element + count); ++i) {
3711 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3712 buffer = queue->bufs[bidx];
3713 qeth_handle_send_error(card, buffer, qdio_error);
3714
3715 if (queue->bufstates &&
3716 (queue->bufstates[bidx].flags &
3717 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3718 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3719
3720 if (atomic_cmpxchg(&buffer->state,
3721 QETH_QDIO_BUF_PRIMED,
3722 QETH_QDIO_BUF_PENDING) ==
3723 QETH_QDIO_BUF_PRIMED) {
3724 qeth_notify_skbs(queue, buffer,
3725 TX_NOTIFY_PENDING);
3726 }
3727 buffer->aob = queue->bufstates[bidx].aob;
3728 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3729 QETH_CARD_TEXT(queue->card, 5, "aob");
3730 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3731 virt_to_phys(buffer->aob));
3732 if (qeth_init_qdio_out_buf(queue, bidx)) {
3733 QETH_CARD_TEXT(card, 2, "outofbuf");
3734 qeth_schedule_recovery(card);
3735 }
3736 } else {
3737 if (card->options.cq == QETH_CQ_ENABLED) {
3738 enum iucv_tx_notify n;
3739
3740 n = qeth_compute_cq_notification(
3741 buffer->buffer->element[15].sflags, 0);
3742 qeth_notify_skbs(queue, buffer, n);
3743 }
3744
3745 qeth_clear_output_buffer(queue, buffer,
3746 QETH_QDIO_BUF_EMPTY);
3747 }
3748 qeth_cleanup_handled_pending(queue, bidx, 0);
3749 }
3750 atomic_sub(count, &queue->used_buffers);
3751 /* check if we need to do something on this outbound queue */
3752 if (card->info.type != QETH_CARD_TYPE_IQD)
3753 qeth_check_outbound_queue(queue);
3754
3755 netif_wake_queue(queue->card->dev);
3756 if (card->options.performance_stats)
3757 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3758 card->perf_stats.outbound_handler_start_time;
3759 }
3760 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3761
3762 /**
3763 * Note: Function assumes that we have 4 outbound queues.
3764 */
qeth_get_priority_queue(struct qeth_card * card,struct sk_buff * skb,int ipv,int cast_type)3765 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3766 int ipv, int cast_type)
3767 {
3768 __be16 *tci;
3769 u8 tos;
3770
3771 if (cast_type && card->info.is_multicast_different)
3772 return card->info.is_multicast_different &
3773 (card->qdio.no_out_queues - 1);
3774
3775 switch (card->qdio.do_prio_queueing) {
3776 case QETH_PRIO_Q_ING_TOS:
3777 case QETH_PRIO_Q_ING_PREC:
3778 switch (ipv) {
3779 case 4:
3780 tos = ipv4_get_dsfield(ip_hdr(skb));
3781 break;
3782 case 6:
3783 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3784 break;
3785 default:
3786 return card->qdio.default_out_queue;
3787 }
3788 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3789 return ~tos >> 6 & 3;
3790 if (tos & IPTOS_MINCOST)
3791 return 3;
3792 if (tos & IPTOS_RELIABILITY)
3793 return 2;
3794 if (tos & IPTOS_THROUGHPUT)
3795 return 1;
3796 if (tos & IPTOS_LOWDELAY)
3797 return 0;
3798 break;
3799 case QETH_PRIO_Q_ING_SKB:
3800 if (skb->priority > 5)
3801 return 0;
3802 return ~skb->priority >> 1 & 3;
3803 case QETH_PRIO_Q_ING_VLAN:
3804 tci = &((struct ethhdr *)skb->data)->h_proto;
3805 if (*tci == ETH_P_8021Q)
3806 return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3807 break;
3808 default:
3809 break;
3810 }
3811 return card->qdio.default_out_queue;
3812 }
3813 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3814
qeth_get_elements_for_frags(struct sk_buff * skb)3815 int qeth_get_elements_for_frags(struct sk_buff *skb)
3816 {
3817 int cnt, length, e, elements = 0;
3818 struct skb_frag_struct *frag;
3819 char *data;
3820
3821 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3822 frag = &skb_shinfo(skb)->frags[cnt];
3823 data = (char *)page_to_phys(skb_frag_page(frag)) +
3824 frag->page_offset;
3825 length = frag->size;
3826 e = PFN_UP((unsigned long)data + length - 1) -
3827 PFN_DOWN((unsigned long)data);
3828 elements += e;
3829 }
3830 return elements;
3831 }
3832 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3833
qeth_get_elements_no(struct qeth_card * card,struct sk_buff * skb,int elems)3834 int qeth_get_elements_no(struct qeth_card *card,
3835 struct sk_buff *skb, int elems)
3836 {
3837 int dlen = skb->len - skb->data_len;
3838 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3839 PFN_DOWN((unsigned long)skb->data);
3840
3841 elements_needed += qeth_get_elements_for_frags(skb);
3842
3843 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3844 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3845 "(Number=%d / Length=%d). Discarded.\n",
3846 (elements_needed+elems), skb->len);
3847 return 0;
3848 }
3849 return elements_needed;
3850 }
3851 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3852
qeth_hdr_chk_and_bounce(struct sk_buff * skb,struct qeth_hdr ** hdr,int len)3853 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3854 {
3855 int hroom, inpage, rest;
3856
3857 if (((unsigned long)skb->data & PAGE_MASK) !=
3858 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3859 hroom = skb_headroom(skb);
3860 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3861 rest = len - inpage;
3862 if (rest > hroom)
3863 return 1;
3864 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3865 skb->data -= rest;
3866 skb->tail -= rest;
3867 *hdr = (struct qeth_hdr *)skb->data;
3868 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3869 }
3870 return 0;
3871 }
3872 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3873
__qeth_fill_buffer(struct sk_buff * skb,struct qdio_buffer * buffer,int is_tso,int * next_element_to_fill,int offset)3874 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3875 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3876 int offset)
3877 {
3878 int length = skb->len - skb->data_len;
3879 int length_here;
3880 int element;
3881 char *data;
3882 int first_lap, cnt;
3883 struct skb_frag_struct *frag;
3884
3885 element = *next_element_to_fill;
3886 data = skb->data;
3887 first_lap = (is_tso == 0 ? 1 : 0);
3888
3889 if (offset >= 0) {
3890 data = skb->data + offset;
3891 length -= offset;
3892 first_lap = 0;
3893 }
3894
3895 while (length > 0) {
3896 /* length_here is the remaining amount of data in this page */
3897 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3898 if (length < length_here)
3899 length_here = length;
3900
3901 buffer->element[element].addr = data;
3902 buffer->element[element].length = length_here;
3903 length -= length_here;
3904 if (!length) {
3905 if (first_lap)
3906 if (skb_shinfo(skb)->nr_frags)
3907 buffer->element[element].eflags =
3908 SBAL_EFLAGS_FIRST_FRAG;
3909 else
3910 buffer->element[element].eflags = 0;
3911 else
3912 buffer->element[element].eflags =
3913 SBAL_EFLAGS_MIDDLE_FRAG;
3914 } else {
3915 if (first_lap)
3916 buffer->element[element].eflags =
3917 SBAL_EFLAGS_FIRST_FRAG;
3918 else
3919 buffer->element[element].eflags =
3920 SBAL_EFLAGS_MIDDLE_FRAG;
3921 }
3922 data += length_here;
3923 element++;
3924 first_lap = 0;
3925 }
3926
3927 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3928 frag = &skb_shinfo(skb)->frags[cnt];
3929 data = (char *)page_to_phys(skb_frag_page(frag)) +
3930 frag->page_offset;
3931 length = frag->size;
3932 while (length > 0) {
3933 length_here = PAGE_SIZE -
3934 ((unsigned long) data % PAGE_SIZE);
3935 if (length < length_here)
3936 length_here = length;
3937
3938 buffer->element[element].addr = data;
3939 buffer->element[element].length = length_here;
3940 buffer->element[element].eflags =
3941 SBAL_EFLAGS_MIDDLE_FRAG;
3942 length -= length_here;
3943 data += length_here;
3944 element++;
3945 }
3946 }
3947
3948 if (buffer->element[element - 1].eflags)
3949 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3950 *next_element_to_fill = element;
3951 }
3952
qeth_fill_buffer(struct qeth_qdio_out_q * queue,struct qeth_qdio_out_buffer * buf,struct sk_buff * skb,struct qeth_hdr * hdr,int offset,int hd_len)3953 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3954 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3955 struct qeth_hdr *hdr, int offset, int hd_len)
3956 {
3957 struct qdio_buffer *buffer;
3958 int flush_cnt = 0, hdr_len, large_send = 0;
3959
3960 buffer = buf->buffer;
3961 atomic_inc(&skb->users);
3962 skb_queue_tail(&buf->skb_list, skb);
3963
3964 /*check first on TSO ....*/
3965 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3966 int element = buf->next_element_to_fill;
3967
3968 hdr_len = sizeof(struct qeth_hdr_tso) +
3969 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3970 /*fill first buffer entry only with header information */
3971 buffer->element[element].addr = skb->data;
3972 buffer->element[element].length = hdr_len;
3973 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3974 buf->next_element_to_fill++;
3975 skb->data += hdr_len;
3976 skb->len -= hdr_len;
3977 large_send = 1;
3978 }
3979
3980 if (offset >= 0) {
3981 int element = buf->next_element_to_fill;
3982 buffer->element[element].addr = hdr;
3983 buffer->element[element].length = sizeof(struct qeth_hdr) +
3984 hd_len;
3985 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3986 buf->is_header[element] = 1;
3987 buf->next_element_to_fill++;
3988 }
3989
3990 __qeth_fill_buffer(skb, buffer, large_send,
3991 (int *)&buf->next_element_to_fill, offset);
3992
3993 if (!queue->do_pack) {
3994 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3995 /* set state to PRIMED -> will be flushed */
3996 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3997 flush_cnt = 1;
3998 } else {
3999 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4000 if (queue->card->options.performance_stats)
4001 queue->card->perf_stats.skbs_sent_pack++;
4002 if (buf->next_element_to_fill >=
4003 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4004 /*
4005 * packed buffer if full -> set state PRIMED
4006 * -> will be flushed
4007 */
4008 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4009 flush_cnt = 1;
4010 }
4011 }
4012 return flush_cnt;
4013 }
4014
qeth_do_send_packet_fast(struct qeth_card * card,struct qeth_qdio_out_q * queue,struct sk_buff * skb,struct qeth_hdr * hdr,int elements_needed,int offset,int hd_len)4015 int qeth_do_send_packet_fast(struct qeth_card *card,
4016 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4017 struct qeth_hdr *hdr, int elements_needed,
4018 int offset, int hd_len)
4019 {
4020 struct qeth_qdio_out_buffer *buffer;
4021 int index;
4022
4023 /* spin until we get the queue ... */
4024 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4025 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4026 /* ... now we've got the queue */
4027 index = queue->next_buf_to_fill;
4028 buffer = queue->bufs[queue->next_buf_to_fill];
4029 /*
4030 * check if buffer is empty to make sure that we do not 'overtake'
4031 * ourselves and try to fill a buffer that is already primed
4032 */
4033 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4034 goto out;
4035 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4036 QDIO_MAX_BUFFERS_PER_Q;
4037 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4038 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4039 qeth_flush_buffers(queue, index, 1);
4040 return 0;
4041 out:
4042 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4043 return -EBUSY;
4044 }
4045 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4046
qeth_do_send_packet(struct qeth_card * card,struct qeth_qdio_out_q * queue,struct sk_buff * skb,struct qeth_hdr * hdr,int elements_needed)4047 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4048 struct sk_buff *skb, struct qeth_hdr *hdr,
4049 int elements_needed)
4050 {
4051 struct qeth_qdio_out_buffer *buffer;
4052 int start_index;
4053 int flush_count = 0;
4054 int do_pack = 0;
4055 int tmp;
4056 int rc = 0;
4057
4058 /* spin until we get the queue ... */
4059 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4060 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4061 start_index = queue->next_buf_to_fill;
4062 buffer = queue->bufs[queue->next_buf_to_fill];
4063 /*
4064 * check if buffer is empty to make sure that we do not 'overtake'
4065 * ourselves and try to fill a buffer that is already primed
4066 */
4067 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4068 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4069 return -EBUSY;
4070 }
4071 /* check if we need to switch packing state of this queue */
4072 qeth_switch_to_packing_if_needed(queue);
4073 if (queue->do_pack) {
4074 do_pack = 1;
4075 /* does packet fit in current buffer? */
4076 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4077 buffer->next_element_to_fill) < elements_needed) {
4078 /* ... no -> set state PRIMED */
4079 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4080 flush_count++;
4081 queue->next_buf_to_fill =
4082 (queue->next_buf_to_fill + 1) %
4083 QDIO_MAX_BUFFERS_PER_Q;
4084 buffer = queue->bufs[queue->next_buf_to_fill];
4085 /* we did a step forward, so check buffer state
4086 * again */
4087 if (atomic_read(&buffer->state) !=
4088 QETH_QDIO_BUF_EMPTY) {
4089 qeth_flush_buffers(queue, start_index,
4090 flush_count);
4091 atomic_set(&queue->state,
4092 QETH_OUT_Q_UNLOCKED);
4093 return -EBUSY;
4094 }
4095 }
4096 }
4097 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4098 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4099 QDIO_MAX_BUFFERS_PER_Q;
4100 flush_count += tmp;
4101 if (flush_count)
4102 qeth_flush_buffers(queue, start_index, flush_count);
4103 else if (!atomic_read(&queue->set_pci_flags_count))
4104 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4105 /*
4106 * queue->state will go from LOCKED -> UNLOCKED or from
4107 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4108 * (switch packing state or flush buffer to get another pci flag out).
4109 * In that case we will enter this loop
4110 */
4111 while (atomic_dec_return(&queue->state)) {
4112 flush_count = 0;
4113 start_index = queue->next_buf_to_fill;
4114 /* check if we can go back to non-packing state */
4115 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4116 /*
4117 * check if we need to flush a packing buffer to get a pci
4118 * flag out on the queue
4119 */
4120 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4121 flush_count += qeth_flush_buffers_on_no_pci(queue);
4122 if (flush_count)
4123 qeth_flush_buffers(queue, start_index, flush_count);
4124 }
4125 /* at this point the queue is UNLOCKED again */
4126 if (queue->card->options.performance_stats && do_pack)
4127 queue->card->perf_stats.bufs_sent_pack += flush_count;
4128
4129 return rc;
4130 }
4131 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4132
qeth_setadp_promisc_mode_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4133 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4134 struct qeth_reply *reply, unsigned long data)
4135 {
4136 struct qeth_ipa_cmd *cmd;
4137 struct qeth_ipacmd_setadpparms *setparms;
4138
4139 QETH_CARD_TEXT(card, 4, "prmadpcb");
4140
4141 cmd = (struct qeth_ipa_cmd *) data;
4142 setparms = &(cmd->data.setadapterparms);
4143
4144 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4145 if (cmd->hdr.return_code) {
4146 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4147 setparms->data.mode = SET_PROMISC_MODE_OFF;
4148 }
4149 card->info.promisc_mode = setparms->data.mode;
4150 return 0;
4151 }
4152
qeth_setadp_promisc_mode(struct qeth_card * card)4153 void qeth_setadp_promisc_mode(struct qeth_card *card)
4154 {
4155 enum qeth_ipa_promisc_modes mode;
4156 struct net_device *dev = card->dev;
4157 struct qeth_cmd_buffer *iob;
4158 struct qeth_ipa_cmd *cmd;
4159
4160 QETH_CARD_TEXT(card, 4, "setprom");
4161
4162 if (((dev->flags & IFF_PROMISC) &&
4163 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4164 (!(dev->flags & IFF_PROMISC) &&
4165 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4166 return;
4167 mode = SET_PROMISC_MODE_OFF;
4168 if (dev->flags & IFF_PROMISC)
4169 mode = SET_PROMISC_MODE_ON;
4170 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4171
4172 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4173 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4174 if (!iob)
4175 return;
4176 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4177 cmd->data.setadapterparms.data.mode = mode;
4178 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4179 }
4180 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4181
qeth_change_mtu(struct net_device * dev,int new_mtu)4182 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4183 {
4184 struct qeth_card *card;
4185 char dbf_text[15];
4186
4187 card = dev->ml_priv;
4188
4189 QETH_CARD_TEXT(card, 4, "chgmtu");
4190 sprintf(dbf_text, "%8x", new_mtu);
4191 QETH_CARD_TEXT(card, 4, dbf_text);
4192
4193 if (new_mtu < 64)
4194 return -EINVAL;
4195 if (new_mtu > 65535)
4196 return -EINVAL;
4197 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4198 (!qeth_mtu_is_valid(card, new_mtu)))
4199 return -EINVAL;
4200 dev->mtu = new_mtu;
4201 return 0;
4202 }
4203 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4204
qeth_get_stats(struct net_device * dev)4205 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4206 {
4207 struct qeth_card *card;
4208
4209 card = dev->ml_priv;
4210
4211 QETH_CARD_TEXT(card, 5, "getstat");
4212
4213 return &card->stats;
4214 }
4215 EXPORT_SYMBOL_GPL(qeth_get_stats);
4216
qeth_setadpparms_change_macaddr_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4217 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4218 struct qeth_reply *reply, unsigned long data)
4219 {
4220 struct qeth_ipa_cmd *cmd;
4221
4222 QETH_CARD_TEXT(card, 4, "chgmaccb");
4223
4224 cmd = (struct qeth_ipa_cmd *) data;
4225 if (!card->options.layer2 ||
4226 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4227 memcpy(card->dev->dev_addr,
4228 &cmd->data.setadapterparms.data.change_addr.addr,
4229 OSA_ADDR_LEN);
4230 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4231 }
4232 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4233 return 0;
4234 }
4235
qeth_setadpparms_change_macaddr(struct qeth_card * card)4236 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4237 {
4238 int rc;
4239 struct qeth_cmd_buffer *iob;
4240 struct qeth_ipa_cmd *cmd;
4241
4242 QETH_CARD_TEXT(card, 4, "chgmac");
4243
4244 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4245 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4246 sizeof(struct qeth_change_addr));
4247 if (!iob)
4248 return -ENOMEM;
4249 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4250 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4251 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4252 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4253 card->dev->dev_addr, OSA_ADDR_LEN);
4254 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4255 NULL);
4256 return rc;
4257 }
4258 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4259
qeth_setadpparms_set_access_ctrl_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4260 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4261 struct qeth_reply *reply, unsigned long data)
4262 {
4263 struct qeth_ipa_cmd *cmd;
4264 struct qeth_set_access_ctrl *access_ctrl_req;
4265 int fallback = *(int *)reply->param;
4266
4267 QETH_CARD_TEXT(card, 4, "setaccb");
4268
4269 cmd = (struct qeth_ipa_cmd *) data;
4270 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4271 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4272 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4273 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4274 cmd->data.setadapterparms.hdr.return_code);
4275 if (cmd->data.setadapterparms.hdr.return_code !=
4276 SET_ACCESS_CTRL_RC_SUCCESS)
4277 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4278 card->gdev->dev.kobj.name,
4279 access_ctrl_req->subcmd_code,
4280 cmd->data.setadapterparms.hdr.return_code);
4281 switch (cmd->data.setadapterparms.hdr.return_code) {
4282 case SET_ACCESS_CTRL_RC_SUCCESS:
4283 if (card->options.isolation == ISOLATION_MODE_NONE) {
4284 dev_info(&card->gdev->dev,
4285 "QDIO data connection isolation is deactivated\n");
4286 } else {
4287 dev_info(&card->gdev->dev,
4288 "QDIO data connection isolation is activated\n");
4289 }
4290 break;
4291 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4292 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4293 "deactivated\n", dev_name(&card->gdev->dev));
4294 if (fallback)
4295 card->options.isolation = card->options.prev_isolation;
4296 break;
4297 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4298 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4299 " activated\n", dev_name(&card->gdev->dev));
4300 if (fallback)
4301 card->options.isolation = card->options.prev_isolation;
4302 break;
4303 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4304 dev_err(&card->gdev->dev, "Adapter does not "
4305 "support QDIO data connection isolation\n");
4306 break;
4307 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4308 dev_err(&card->gdev->dev,
4309 "Adapter is dedicated. "
4310 "QDIO data connection isolation not supported\n");
4311 if (fallback)
4312 card->options.isolation = card->options.prev_isolation;
4313 break;
4314 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4315 dev_err(&card->gdev->dev,
4316 "TSO does not permit QDIO data connection isolation\n");
4317 if (fallback)
4318 card->options.isolation = card->options.prev_isolation;
4319 break;
4320 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4321 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4322 "support reflective relay mode\n");
4323 if (fallback)
4324 card->options.isolation = card->options.prev_isolation;
4325 break;
4326 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4327 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4328 "enabled at the adjacent switch port");
4329 if (fallback)
4330 card->options.isolation = card->options.prev_isolation;
4331 break;
4332 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4333 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4334 "at the adjacent switch failed\n");
4335 break;
4336 default:
4337 /* this should never happen */
4338 if (fallback)
4339 card->options.isolation = card->options.prev_isolation;
4340 break;
4341 }
4342 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4343 return 0;
4344 }
4345
qeth_setadpparms_set_access_ctrl(struct qeth_card * card,enum qeth_ipa_isolation_modes isolation,int fallback)4346 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4347 enum qeth_ipa_isolation_modes isolation, int fallback)
4348 {
4349 int rc;
4350 struct qeth_cmd_buffer *iob;
4351 struct qeth_ipa_cmd *cmd;
4352 struct qeth_set_access_ctrl *access_ctrl_req;
4353
4354 QETH_CARD_TEXT(card, 4, "setacctl");
4355
4356 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4357 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4358
4359 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4360 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4361 sizeof(struct qeth_set_access_ctrl));
4362 if (!iob)
4363 return -ENOMEM;
4364 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4365 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4366 access_ctrl_req->subcmd_code = isolation;
4367
4368 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4369 &fallback);
4370 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4371 return rc;
4372 }
4373
qeth_set_access_ctrl_online(struct qeth_card * card,int fallback)4374 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4375 {
4376 int rc = 0;
4377
4378 QETH_CARD_TEXT(card, 4, "setactlo");
4379
4380 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4381 card->info.type == QETH_CARD_TYPE_OSX) &&
4382 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4383 rc = qeth_setadpparms_set_access_ctrl(card,
4384 card->options.isolation, fallback);
4385 if (rc) {
4386 QETH_DBF_MESSAGE(3,
4387 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4388 card->gdev->dev.kobj.name,
4389 rc);
4390 rc = -EOPNOTSUPP;
4391 }
4392 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4393 card->options.isolation = ISOLATION_MODE_NONE;
4394
4395 dev_err(&card->gdev->dev, "Adapter does not "
4396 "support QDIO data connection isolation\n");
4397 rc = -EOPNOTSUPP;
4398 }
4399 return rc;
4400 }
4401 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4402
qeth_tx_timeout(struct net_device * dev)4403 void qeth_tx_timeout(struct net_device *dev)
4404 {
4405 struct qeth_card *card;
4406
4407 card = dev->ml_priv;
4408 QETH_CARD_TEXT(card, 4, "txtimeo");
4409 card->stats.tx_errors++;
4410 qeth_schedule_recovery(card);
4411 }
4412 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4413
qeth_mdio_read(struct net_device * dev,int phy_id,int regnum)4414 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4415 {
4416 struct qeth_card *card = dev->ml_priv;
4417 int rc = 0;
4418
4419 switch (regnum) {
4420 case MII_BMCR: /* Basic mode control register */
4421 rc = BMCR_FULLDPLX;
4422 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4423 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4424 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4425 rc |= BMCR_SPEED100;
4426 break;
4427 case MII_BMSR: /* Basic mode status register */
4428 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4429 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4430 BMSR_100BASE4;
4431 break;
4432 case MII_PHYSID1: /* PHYS ID 1 */
4433 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4434 dev->dev_addr[2];
4435 rc = (rc >> 5) & 0xFFFF;
4436 break;
4437 case MII_PHYSID2: /* PHYS ID 2 */
4438 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4439 break;
4440 case MII_ADVERTISE: /* Advertisement control reg */
4441 rc = ADVERTISE_ALL;
4442 break;
4443 case MII_LPA: /* Link partner ability reg */
4444 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4445 LPA_100BASE4 | LPA_LPACK;
4446 break;
4447 case MII_EXPANSION: /* Expansion register */
4448 break;
4449 case MII_DCOUNTER: /* disconnect counter */
4450 break;
4451 case MII_FCSCOUNTER: /* false carrier counter */
4452 break;
4453 case MII_NWAYTEST: /* N-way auto-neg test register */
4454 break;
4455 case MII_RERRCOUNTER: /* rx error counter */
4456 rc = card->stats.rx_errors;
4457 break;
4458 case MII_SREVISION: /* silicon revision */
4459 break;
4460 case MII_RESV1: /* reserved 1 */
4461 break;
4462 case MII_LBRERROR: /* loopback, rx, bypass error */
4463 break;
4464 case MII_PHYADDR: /* physical address */
4465 break;
4466 case MII_RESV2: /* reserved 2 */
4467 break;
4468 case MII_TPISTATUS: /* TPI status for 10mbps */
4469 break;
4470 case MII_NCONFIG: /* network interface config */
4471 break;
4472 default:
4473 break;
4474 }
4475 return rc;
4476 }
4477 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4478
qeth_send_ipa_snmp_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob,int len,int (* reply_cb)(struct qeth_card *,struct qeth_reply *,unsigned long),void * reply_param)4479 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4480 struct qeth_cmd_buffer *iob, int len,
4481 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4482 unsigned long),
4483 void *reply_param)
4484 {
4485 u16 s1, s2;
4486
4487 QETH_CARD_TEXT(card, 4, "sendsnmp");
4488
4489 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4490 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4491 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4492 /* adjust PDU length fields in IPA_PDU_HEADER */
4493 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4494 s2 = (u32) len;
4495 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4496 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4497 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4498 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4499 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4500 reply_cb, reply_param);
4501 }
4502
qeth_snmp_command_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long sdata)4503 static int qeth_snmp_command_cb(struct qeth_card *card,
4504 struct qeth_reply *reply, unsigned long sdata)
4505 {
4506 struct qeth_ipa_cmd *cmd;
4507 struct qeth_arp_query_info *qinfo;
4508 struct qeth_snmp_cmd *snmp;
4509 unsigned char *data;
4510 __u16 data_len;
4511
4512 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4513
4514 cmd = (struct qeth_ipa_cmd *) sdata;
4515 data = (unsigned char *)((char *)cmd - reply->offset);
4516 qinfo = (struct qeth_arp_query_info *) reply->param;
4517 snmp = &cmd->data.setadapterparms.data.snmp;
4518
4519 if (cmd->hdr.return_code) {
4520 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4521 return 0;
4522 }
4523 if (cmd->data.setadapterparms.hdr.return_code) {
4524 cmd->hdr.return_code =
4525 cmd->data.setadapterparms.hdr.return_code;
4526 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4527 return 0;
4528 }
4529 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4530 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4531 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4532 else
4533 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4534
4535 /* check if there is enough room in userspace */
4536 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4537 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4538 cmd->hdr.return_code = IPA_RC_ENOMEM;
4539 return 0;
4540 }
4541 QETH_CARD_TEXT_(card, 4, "snore%i",
4542 cmd->data.setadapterparms.hdr.used_total);
4543 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4544 cmd->data.setadapterparms.hdr.seq_no);
4545 /*copy entries to user buffer*/
4546 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4547 memcpy(qinfo->udata + qinfo->udata_offset,
4548 (char *)snmp,
4549 data_len + offsetof(struct qeth_snmp_cmd, data));
4550 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4551 } else {
4552 memcpy(qinfo->udata + qinfo->udata_offset,
4553 (char *)&snmp->request, data_len);
4554 }
4555 qinfo->udata_offset += data_len;
4556 /* check if all replies received ... */
4557 QETH_CARD_TEXT_(card, 4, "srtot%i",
4558 cmd->data.setadapterparms.hdr.used_total);
4559 QETH_CARD_TEXT_(card, 4, "srseq%i",
4560 cmd->data.setadapterparms.hdr.seq_no);
4561 if (cmd->data.setadapterparms.hdr.seq_no <
4562 cmd->data.setadapterparms.hdr.used_total)
4563 return 1;
4564 return 0;
4565 }
4566
qeth_snmp_command(struct qeth_card * card,char __user * udata)4567 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4568 {
4569 struct qeth_cmd_buffer *iob;
4570 struct qeth_ipa_cmd *cmd;
4571 struct qeth_snmp_ureq *ureq;
4572 unsigned int req_len;
4573 struct qeth_arp_query_info qinfo = {0, };
4574 int rc = 0;
4575
4576 QETH_CARD_TEXT(card, 3, "snmpcmd");
4577
4578 if (card->info.guestlan)
4579 return -EOPNOTSUPP;
4580
4581 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4582 (!card->options.layer2)) {
4583 return -EOPNOTSUPP;
4584 }
4585 /* skip 4 bytes (data_len struct member) to get req_len */
4586 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4587 return -EFAULT;
4588 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4589 sizeof(struct qeth_ipacmd_hdr) -
4590 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4591 return -EINVAL;
4592 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4593 if (IS_ERR(ureq)) {
4594 QETH_CARD_TEXT(card, 2, "snmpnome");
4595 return PTR_ERR(ureq);
4596 }
4597 qinfo.udata_len = ureq->hdr.data_len;
4598 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4599 if (!qinfo.udata) {
4600 kfree(ureq);
4601 return -ENOMEM;
4602 }
4603 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4604
4605 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4606 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4607 if (!iob) {
4608 rc = -ENOMEM;
4609 goto out;
4610 }
4611 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4612 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4613 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4614 qeth_snmp_command_cb, (void *)&qinfo);
4615 if (rc)
4616 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4617 QETH_CARD_IFNAME(card), rc);
4618 else {
4619 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4620 rc = -EFAULT;
4621 }
4622 out:
4623 kfree(ureq);
4624 kfree(qinfo.udata);
4625 return rc;
4626 }
4627 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4628
qeth_setadpparms_query_oat_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4629 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4630 struct qeth_reply *reply, unsigned long data)
4631 {
4632 struct qeth_ipa_cmd *cmd;
4633 struct qeth_qoat_priv *priv;
4634 char *resdata;
4635 int resdatalen;
4636
4637 QETH_CARD_TEXT(card, 3, "qoatcb");
4638
4639 cmd = (struct qeth_ipa_cmd *)data;
4640 priv = (struct qeth_qoat_priv *)reply->param;
4641 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4642 resdata = (char *)data + 28;
4643
4644 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4645 cmd->hdr.return_code = IPA_RC_FFFF;
4646 return 0;
4647 }
4648
4649 memcpy((priv->buffer + priv->response_len), resdata,
4650 resdatalen);
4651 priv->response_len += resdatalen;
4652
4653 if (cmd->data.setadapterparms.hdr.seq_no <
4654 cmd->data.setadapterparms.hdr.used_total)
4655 return 1;
4656 return 0;
4657 }
4658
qeth_query_oat_command(struct qeth_card * card,char __user * udata)4659 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4660 {
4661 int rc = 0;
4662 struct qeth_cmd_buffer *iob;
4663 struct qeth_ipa_cmd *cmd;
4664 struct qeth_query_oat *oat_req;
4665 struct qeth_query_oat_data oat_data;
4666 struct qeth_qoat_priv priv;
4667 void __user *tmp;
4668
4669 QETH_CARD_TEXT(card, 3, "qoatcmd");
4670
4671 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4672 rc = -EOPNOTSUPP;
4673 goto out;
4674 }
4675
4676 if (copy_from_user(&oat_data, udata,
4677 sizeof(struct qeth_query_oat_data))) {
4678 rc = -EFAULT;
4679 goto out;
4680 }
4681
4682 priv.buffer_len = oat_data.buffer_len;
4683 priv.response_len = 0;
4684 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4685 if (!priv.buffer) {
4686 rc = -ENOMEM;
4687 goto out;
4688 }
4689
4690 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4691 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4692 sizeof(struct qeth_query_oat));
4693 if (!iob) {
4694 rc = -ENOMEM;
4695 goto out_free;
4696 }
4697 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4698 oat_req = &cmd->data.setadapterparms.data.query_oat;
4699 oat_req->subcmd_code = oat_data.command;
4700
4701 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4702 &priv);
4703 if (!rc) {
4704 if (is_compat_task())
4705 tmp = compat_ptr(oat_data.ptr);
4706 else
4707 tmp = (void __user *)(unsigned long)oat_data.ptr;
4708
4709 if (copy_to_user(tmp, priv.buffer,
4710 priv.response_len)) {
4711 rc = -EFAULT;
4712 goto out_free;
4713 }
4714
4715 oat_data.response_len = priv.response_len;
4716
4717 if (copy_to_user(udata, &oat_data,
4718 sizeof(struct qeth_query_oat_data)))
4719 rc = -EFAULT;
4720 } else
4721 if (rc == IPA_RC_FFFF)
4722 rc = -EFAULT;
4723
4724 out_free:
4725 kfree(priv.buffer);
4726 out:
4727 return rc;
4728 }
4729 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4730
qeth_query_card_info_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4731 static int qeth_query_card_info_cb(struct qeth_card *card,
4732 struct qeth_reply *reply, unsigned long data)
4733 {
4734 struct qeth_ipa_cmd *cmd;
4735 struct qeth_query_card_info *card_info;
4736 struct carrier_info *carrier_info;
4737
4738 QETH_CARD_TEXT(card, 2, "qcrdincb");
4739 carrier_info = (struct carrier_info *)reply->param;
4740 cmd = (struct qeth_ipa_cmd *)data;
4741 card_info = &cmd->data.setadapterparms.data.card_info;
4742 if (cmd->data.setadapterparms.hdr.return_code == 0) {
4743 carrier_info->card_type = card_info->card_type;
4744 carrier_info->port_mode = card_info->port_mode;
4745 carrier_info->port_speed = card_info->port_speed;
4746 }
4747
4748 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4749 return 0;
4750 }
4751
qeth_query_card_info(struct qeth_card * card,struct carrier_info * carrier_info)4752 static int qeth_query_card_info(struct qeth_card *card,
4753 struct carrier_info *carrier_info)
4754 {
4755 struct qeth_cmd_buffer *iob;
4756
4757 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4758 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4759 return -EOPNOTSUPP;
4760 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4761 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4762 if (!iob)
4763 return -ENOMEM;
4764 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4765 (void *)carrier_info);
4766 }
4767
qeth_get_qdio_q_format(struct qeth_card * card)4768 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4769 {
4770 switch (card->info.type) {
4771 case QETH_CARD_TYPE_IQD:
4772 return 2;
4773 default:
4774 return 0;
4775 }
4776 }
4777
qeth_determine_capabilities(struct qeth_card * card)4778 static void qeth_determine_capabilities(struct qeth_card *card)
4779 {
4780 int rc;
4781 int length;
4782 char *prcd;
4783 struct ccw_device *ddev;
4784 int ddev_offline = 0;
4785
4786 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4787 ddev = CARD_DDEV(card);
4788 if (!ddev->online) {
4789 ddev_offline = 1;
4790 rc = ccw_device_set_online(ddev);
4791 if (rc) {
4792 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4793 goto out;
4794 }
4795 }
4796
4797 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4798 if (rc) {
4799 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4800 dev_name(&card->gdev->dev), rc);
4801 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4802 goto out_offline;
4803 }
4804 qeth_configure_unitaddr(card, prcd);
4805 if (ddev_offline)
4806 qeth_configure_blkt_default(card, prcd);
4807 kfree(prcd);
4808
4809 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4810 if (rc)
4811 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4812
4813 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4814 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4815 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4816 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4817 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4818 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4819 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4820 dev_info(&card->gdev->dev,
4821 "Completion Queueing supported\n");
4822 } else {
4823 card->options.cq = QETH_CQ_NOTAVAILABLE;
4824 }
4825
4826
4827 out_offline:
4828 if (ddev_offline == 1)
4829 ccw_device_set_offline(ddev);
4830 out:
4831 return;
4832 }
4833
qeth_qdio_establish_cq(struct qeth_card * card,struct qdio_buffer ** in_sbal_ptrs,void (** queue_start_poll)(struct ccw_device *,int,unsigned long))4834 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4835 struct qdio_buffer **in_sbal_ptrs,
4836 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4837 int i;
4838
4839 if (card->options.cq == QETH_CQ_ENABLED) {
4840 int offset = QDIO_MAX_BUFFERS_PER_Q *
4841 (card->qdio.no_in_queues - 1);
4842 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4843 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4844 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4845 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4846 }
4847
4848 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4849 }
4850 }
4851
qeth_qdio_establish(struct qeth_card * card)4852 static int qeth_qdio_establish(struct qeth_card *card)
4853 {
4854 struct qdio_initialize init_data;
4855 char *qib_param_field;
4856 struct qdio_buffer **in_sbal_ptrs;
4857 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4858 struct qdio_buffer **out_sbal_ptrs;
4859 int i, j, k;
4860 int rc = 0;
4861
4862 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4863
4864 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4865 GFP_KERNEL);
4866 if (!qib_param_field) {
4867 rc = -ENOMEM;
4868 goto out_free_nothing;
4869 }
4870
4871 qeth_create_qib_param_field(card, qib_param_field);
4872 qeth_create_qib_param_field_blkt(card, qib_param_field);
4873
4874 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4875 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4876 GFP_KERNEL);
4877 if (!in_sbal_ptrs) {
4878 rc = -ENOMEM;
4879 goto out_free_qib_param;
4880 }
4881 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4882 in_sbal_ptrs[i] = (struct qdio_buffer *)
4883 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4884 }
4885
4886 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4887 GFP_KERNEL);
4888 if (!queue_start_poll) {
4889 rc = -ENOMEM;
4890 goto out_free_in_sbals;
4891 }
4892 for (i = 0; i < card->qdio.no_in_queues; ++i)
4893 queue_start_poll[i] = card->discipline->start_poll;
4894
4895 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4896
4897 out_sbal_ptrs =
4898 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4899 sizeof(void *), GFP_KERNEL);
4900 if (!out_sbal_ptrs) {
4901 rc = -ENOMEM;
4902 goto out_free_queue_start_poll;
4903 }
4904 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4905 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4906 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4907 card->qdio.out_qs[i]->bufs[j]->buffer);
4908 }
4909
4910 memset(&init_data, 0, sizeof(struct qdio_initialize));
4911 init_data.cdev = CARD_DDEV(card);
4912 init_data.q_format = qeth_get_qdio_q_format(card);
4913 init_data.qib_param_field_format = 0;
4914 init_data.qib_param_field = qib_param_field;
4915 init_data.no_input_qs = card->qdio.no_in_queues;
4916 init_data.no_output_qs = card->qdio.no_out_queues;
4917 init_data.input_handler = card->discipline->input_handler;
4918 init_data.output_handler = card->discipline->output_handler;
4919 init_data.queue_start_poll_array = queue_start_poll;
4920 init_data.int_parm = (unsigned long) card;
4921 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4922 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4923 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4924 init_data.scan_threshold =
4925 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4926
4927 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4928 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4929 rc = qdio_allocate(&init_data);
4930 if (rc) {
4931 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4932 goto out;
4933 }
4934 rc = qdio_establish(&init_data);
4935 if (rc) {
4936 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4937 qdio_free(CARD_DDEV(card));
4938 }
4939 }
4940
4941 switch (card->options.cq) {
4942 case QETH_CQ_ENABLED:
4943 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4944 break;
4945 case QETH_CQ_DISABLED:
4946 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4947 break;
4948 default:
4949 break;
4950 }
4951 out:
4952 kfree(out_sbal_ptrs);
4953 out_free_queue_start_poll:
4954 kfree(queue_start_poll);
4955 out_free_in_sbals:
4956 kfree(in_sbal_ptrs);
4957 out_free_qib_param:
4958 kfree(qib_param_field);
4959 out_free_nothing:
4960 return rc;
4961 }
4962
qeth_core_free_card(struct qeth_card * card)4963 static void qeth_core_free_card(struct qeth_card *card)
4964 {
4965
4966 QETH_DBF_TEXT(SETUP, 2, "freecrd");
4967 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4968 qeth_clean_channel(&card->read);
4969 qeth_clean_channel(&card->write);
4970 if (card->dev)
4971 free_netdev(card->dev);
4972 kfree(card->ip_tbd_list);
4973 qeth_free_qdio_buffers(card);
4974 unregister_service_level(&card->qeth_service_level);
4975 kfree(card);
4976 }
4977
qeth_trace_features(struct qeth_card * card)4978 void qeth_trace_features(struct qeth_card *card)
4979 {
4980 QETH_CARD_TEXT(card, 2, "features");
4981 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4982 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4983 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4984 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4985 sizeof(card->info.diagass_support));
4986 }
4987 EXPORT_SYMBOL_GPL(qeth_trace_features);
4988
4989 static struct ccw_device_id qeth_ids[] = {
4990 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4991 .driver_info = QETH_CARD_TYPE_OSD},
4992 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4993 .driver_info = QETH_CARD_TYPE_IQD},
4994 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4995 .driver_info = QETH_CARD_TYPE_OSN},
4996 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4997 .driver_info = QETH_CARD_TYPE_OSM},
4998 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4999 .driver_info = QETH_CARD_TYPE_OSX},
5000 {},
5001 };
5002 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5003
5004 static struct ccw_driver qeth_ccw_driver = {
5005 .driver = {
5006 .owner = THIS_MODULE,
5007 .name = "qeth",
5008 },
5009 .ids = qeth_ids,
5010 .probe = ccwgroup_probe_ccwdev,
5011 .remove = ccwgroup_remove_ccwdev,
5012 };
5013
qeth_core_hardsetup_card(struct qeth_card * card)5014 int qeth_core_hardsetup_card(struct qeth_card *card)
5015 {
5016 int retries = 3;
5017 int rc;
5018
5019 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5020 atomic_set(&card->force_alloc_skb, 0);
5021 qeth_update_from_chp_desc(card);
5022 retry:
5023 if (retries < 3)
5024 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5025 dev_name(&card->gdev->dev));
5026 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5027 ccw_device_set_offline(CARD_DDEV(card));
5028 ccw_device_set_offline(CARD_WDEV(card));
5029 ccw_device_set_offline(CARD_RDEV(card));
5030 qdio_free(CARD_DDEV(card));
5031 rc = ccw_device_set_online(CARD_RDEV(card));
5032 if (rc)
5033 goto retriable;
5034 rc = ccw_device_set_online(CARD_WDEV(card));
5035 if (rc)
5036 goto retriable;
5037 rc = ccw_device_set_online(CARD_DDEV(card));
5038 if (rc)
5039 goto retriable;
5040 retriable:
5041 if (rc == -ERESTARTSYS) {
5042 QETH_DBF_TEXT(SETUP, 2, "break1");
5043 return rc;
5044 } else if (rc) {
5045 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5046 if (--retries < 0)
5047 goto out;
5048 else
5049 goto retry;
5050 }
5051 qeth_determine_capabilities(card);
5052 qeth_init_tokens(card);
5053 qeth_init_func_level(card);
5054 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5055 if (rc == -ERESTARTSYS) {
5056 QETH_DBF_TEXT(SETUP, 2, "break2");
5057 return rc;
5058 } else if (rc) {
5059 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5060 if (--retries < 0)
5061 goto out;
5062 else
5063 goto retry;
5064 }
5065 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5066 if (rc == -ERESTARTSYS) {
5067 QETH_DBF_TEXT(SETUP, 2, "break3");
5068 return rc;
5069 } else if (rc) {
5070 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5071 if (--retries < 0)
5072 goto out;
5073 else
5074 goto retry;
5075 }
5076 card->read_or_write_problem = 0;
5077 rc = qeth_mpc_initialize(card);
5078 if (rc) {
5079 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5080 goto out;
5081 }
5082
5083 card->options.ipa4.supported_funcs = 0;
5084 card->options.ipa6.supported_funcs = 0;
5085 card->options.adp.supported_funcs = 0;
5086 card->options.sbp.supported_funcs = 0;
5087 card->info.diagass_support = 0;
5088 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5089 if (rc == -ENOMEM)
5090 goto out;
5091 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5092 rc = qeth_query_setadapterparms(card);
5093 if (rc < 0) {
5094 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5095 goto out;
5096 }
5097 }
5098 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5099 rc = qeth_query_setdiagass(card);
5100 if (rc < 0) {
5101 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5102 goto out;
5103 }
5104 }
5105 return 0;
5106 out:
5107 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5108 "an error on the device\n");
5109 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5110 dev_name(&card->gdev->dev), rc);
5111 return rc;
5112 }
5113 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5114
qeth_create_skb_frag(struct qeth_qdio_buffer * qethbuffer,struct qdio_buffer_element * element,struct sk_buff ** pskb,int offset,int * pfrag,int data_len)5115 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5116 struct qdio_buffer_element *element,
5117 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5118 {
5119 struct page *page = virt_to_page(element->addr);
5120 if (*pskb == NULL) {
5121 if (qethbuffer->rx_skb) {
5122 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5123 *pskb = qethbuffer->rx_skb;
5124 qethbuffer->rx_skb = NULL;
5125 } else {
5126 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5127 if (!(*pskb))
5128 return -ENOMEM;
5129 }
5130
5131 skb_reserve(*pskb, ETH_HLEN);
5132 if (data_len <= QETH_RX_PULL_LEN) {
5133 memcpy(skb_put(*pskb, data_len), element->addr + offset,
5134 data_len);
5135 } else {
5136 get_page(page);
5137 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5138 element->addr + offset, QETH_RX_PULL_LEN);
5139 skb_fill_page_desc(*pskb, *pfrag, page,
5140 offset + QETH_RX_PULL_LEN,
5141 data_len - QETH_RX_PULL_LEN);
5142 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5143 (*pskb)->len += data_len - QETH_RX_PULL_LEN;
5144 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5145 (*pfrag)++;
5146 }
5147 } else {
5148 get_page(page);
5149 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5150 (*pskb)->data_len += data_len;
5151 (*pskb)->len += data_len;
5152 (*pskb)->truesize += data_len;
5153 (*pfrag)++;
5154 }
5155
5156
5157 return 0;
5158 }
5159
qeth_is_last_sbale(struct qdio_buffer_element * sbale)5160 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5161 {
5162 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5163 }
5164
qeth_core_get_next_skb(struct qeth_card * card,struct qeth_qdio_buffer * qethbuffer,struct qdio_buffer_element ** __element,int * __offset,struct qeth_hdr ** hdr)5165 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5166 struct qeth_qdio_buffer *qethbuffer,
5167 struct qdio_buffer_element **__element, int *__offset,
5168 struct qeth_hdr **hdr)
5169 {
5170 struct qdio_buffer_element *element = *__element;
5171 struct qdio_buffer *buffer = qethbuffer->buffer;
5172 int offset = *__offset;
5173 struct sk_buff *skb = NULL;
5174 int skb_len = 0;
5175 void *data_ptr;
5176 int data_len;
5177 int headroom = 0;
5178 int use_rx_sg = 0;
5179 int frag = 0;
5180
5181 /* qeth_hdr must not cross element boundaries */
5182 if (element->length < offset + sizeof(struct qeth_hdr)) {
5183 if (qeth_is_last_sbale(element))
5184 return NULL;
5185 element++;
5186 offset = 0;
5187 if (element->length < sizeof(struct qeth_hdr))
5188 return NULL;
5189 }
5190 *hdr = element->addr + offset;
5191
5192 offset += sizeof(struct qeth_hdr);
5193 switch ((*hdr)->hdr.l2.id) {
5194 case QETH_HEADER_TYPE_LAYER2:
5195 skb_len = (*hdr)->hdr.l2.pkt_length;
5196 break;
5197 case QETH_HEADER_TYPE_LAYER3:
5198 skb_len = (*hdr)->hdr.l3.length;
5199 headroom = ETH_HLEN;
5200 break;
5201 case QETH_HEADER_TYPE_OSN:
5202 skb_len = (*hdr)->hdr.osn.pdu_length;
5203 headroom = sizeof(struct qeth_hdr);
5204 break;
5205 default:
5206 break;
5207 }
5208
5209 if (!skb_len)
5210 return NULL;
5211
5212 if (((skb_len >= card->options.rx_sg_cb) &&
5213 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5214 (!atomic_read(&card->force_alloc_skb))) ||
5215 (card->options.cq == QETH_CQ_ENABLED)) {
5216 use_rx_sg = 1;
5217 } else {
5218 skb = dev_alloc_skb(skb_len + headroom);
5219 if (!skb)
5220 goto no_mem;
5221 if (headroom)
5222 skb_reserve(skb, headroom);
5223 }
5224
5225 data_ptr = element->addr + offset;
5226 while (skb_len) {
5227 data_len = min(skb_len, (int)(element->length - offset));
5228 if (data_len) {
5229 if (use_rx_sg) {
5230 if (qeth_create_skb_frag(qethbuffer, element,
5231 &skb, offset, &frag, data_len))
5232 goto no_mem;
5233 } else {
5234 memcpy(skb_put(skb, data_len), data_ptr,
5235 data_len);
5236 }
5237 }
5238 skb_len -= data_len;
5239 if (skb_len) {
5240 if (qeth_is_last_sbale(element)) {
5241 QETH_CARD_TEXT(card, 4, "unexeob");
5242 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5243 dev_kfree_skb_any(skb);
5244 card->stats.rx_errors++;
5245 return NULL;
5246 }
5247 element++;
5248 offset = 0;
5249 data_ptr = element->addr;
5250 } else {
5251 offset += data_len;
5252 }
5253 }
5254 *__element = element;
5255 *__offset = offset;
5256 if (use_rx_sg && card->options.performance_stats) {
5257 card->perf_stats.sg_skbs_rx++;
5258 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5259 }
5260 return skb;
5261 no_mem:
5262 if (net_ratelimit()) {
5263 QETH_CARD_TEXT(card, 2, "noskbmem");
5264 }
5265 card->stats.rx_dropped++;
5266 return NULL;
5267 }
5268 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5269
qeth_setassparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)5270 static int qeth_setassparms_cb(struct qeth_card *card,
5271 struct qeth_reply *reply, unsigned long data)
5272 {
5273 struct qeth_ipa_cmd *cmd;
5274
5275 QETH_CARD_TEXT(card, 4, "defadpcb");
5276
5277 cmd = (struct qeth_ipa_cmd *) data;
5278 if (cmd->hdr.return_code == 0) {
5279 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5280 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5281 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5282 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5283 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5284 }
5285 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
5286 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5287 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
5288 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
5289 }
5290 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
5291 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5292 card->info.tx_csum_mask =
5293 cmd->data.setassparms.data.flags_32bit;
5294 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
5295 }
5296
5297 return 0;
5298 }
5299
qeth_get_setassparms_cmd(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code,__u16 len,enum qeth_prot_versions prot)5300 static struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5301 enum qeth_ipa_funcs ipa_func,
5302 __u16 cmd_code, __u16 len,
5303 enum qeth_prot_versions prot)
5304 {
5305 struct qeth_cmd_buffer *iob;
5306 struct qeth_ipa_cmd *cmd;
5307
5308 QETH_CARD_TEXT(card, 4, "getasscm");
5309 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5310
5311 if (iob) {
5312 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5313 cmd->data.setassparms.hdr.assist_no = ipa_func;
5314 cmd->data.setassparms.hdr.length = 8 + len;
5315 cmd->data.setassparms.hdr.command_code = cmd_code;
5316 cmd->data.setassparms.hdr.return_code = 0;
5317 cmd->data.setassparms.hdr.seq_no = 0;
5318 }
5319
5320 return iob;
5321 }
5322
qeth_send_setassparms(struct qeth_card * card,struct qeth_cmd_buffer * iob,__u16 len,long data,int (* reply_cb)(struct qeth_card *,struct qeth_reply *,unsigned long),void * reply_param)5323 int qeth_send_setassparms(struct qeth_card *card,
5324 struct qeth_cmd_buffer *iob, __u16 len, long data,
5325 int (*reply_cb)(struct qeth_card *,
5326 struct qeth_reply *, unsigned long),
5327 void *reply_param)
5328 {
5329 int rc;
5330 struct qeth_ipa_cmd *cmd;
5331
5332 QETH_CARD_TEXT(card, 4, "sendassp");
5333
5334 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5335 if (len <= sizeof(__u32))
5336 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5337 else /* (len > sizeof(__u32)) */
5338 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5339
5340 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5341 return rc;
5342 }
5343 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5344
qeth_send_simple_setassparms(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code,long data)5345 int qeth_send_simple_setassparms(struct qeth_card *card,
5346 enum qeth_ipa_funcs ipa_func,
5347 __u16 cmd_code, long data)
5348 {
5349 int rc;
5350 int length = 0;
5351 struct qeth_cmd_buffer *iob;
5352
5353 QETH_CARD_TEXT(card, 4, "simassp4");
5354 if (data)
5355 length = sizeof(__u32);
5356 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5357 length, QETH_PROT_IPV4);
5358 if (!iob)
5359 return -ENOMEM;
5360 rc = qeth_send_setassparms(card, iob, length, data,
5361 qeth_setassparms_cb, NULL);
5362 return rc;
5363 }
5364 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5365
qeth_unregister_dbf_views(void)5366 static void qeth_unregister_dbf_views(void)
5367 {
5368 int x;
5369 for (x = 0; x < QETH_DBF_INFOS; x++) {
5370 debug_unregister(qeth_dbf[x].id);
5371 qeth_dbf[x].id = NULL;
5372 }
5373 }
5374
qeth_dbf_longtext(debug_info_t * id,int level,char * fmt,...)5375 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5376 {
5377 char dbf_txt_buf[32];
5378 va_list args;
5379
5380 if (!debug_level_enabled(id, level))
5381 return;
5382 va_start(args, fmt);
5383 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5384 va_end(args);
5385 debug_text_event(id, level, dbf_txt_buf);
5386 }
5387 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5388
qeth_register_dbf_views(void)5389 static int qeth_register_dbf_views(void)
5390 {
5391 int ret;
5392 int x;
5393
5394 for (x = 0; x < QETH_DBF_INFOS; x++) {
5395 /* register the areas */
5396 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5397 qeth_dbf[x].pages,
5398 qeth_dbf[x].areas,
5399 qeth_dbf[x].len);
5400 if (qeth_dbf[x].id == NULL) {
5401 qeth_unregister_dbf_views();
5402 return -ENOMEM;
5403 }
5404
5405 /* register a view */
5406 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5407 if (ret) {
5408 qeth_unregister_dbf_views();
5409 return ret;
5410 }
5411
5412 /* set a passing level */
5413 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5414 }
5415
5416 return 0;
5417 }
5418
qeth_core_load_discipline(struct qeth_card * card,enum qeth_discipline_id discipline)5419 int qeth_core_load_discipline(struct qeth_card *card,
5420 enum qeth_discipline_id discipline)
5421 {
5422 int rc = 0;
5423 mutex_lock(&qeth_mod_mutex);
5424 switch (discipline) {
5425 case QETH_DISCIPLINE_LAYER3:
5426 card->discipline = try_then_request_module(
5427 symbol_get(qeth_l3_discipline), "qeth_l3");
5428 break;
5429 case QETH_DISCIPLINE_LAYER2:
5430 card->discipline = try_then_request_module(
5431 symbol_get(qeth_l2_discipline), "qeth_l2");
5432 break;
5433 }
5434 if (!card->discipline) {
5435 dev_err(&card->gdev->dev, "There is no kernel module to "
5436 "support discipline %d\n", discipline);
5437 rc = -EINVAL;
5438 }
5439 mutex_unlock(&qeth_mod_mutex);
5440 return rc;
5441 }
5442
qeth_core_free_discipline(struct qeth_card * card)5443 void qeth_core_free_discipline(struct qeth_card *card)
5444 {
5445 if (card->options.layer2)
5446 symbol_put(qeth_l2_discipline);
5447 else
5448 symbol_put(qeth_l3_discipline);
5449 card->discipline = NULL;
5450 }
5451
5452 static const struct device_type qeth_generic_devtype = {
5453 .name = "qeth_generic",
5454 .groups = qeth_generic_attr_groups,
5455 };
5456 static const struct device_type qeth_osn_devtype = {
5457 .name = "qeth_osn",
5458 .groups = qeth_osn_attr_groups,
5459 };
5460
5461 #define DBF_NAME_LEN 20
5462
5463 struct qeth_dbf_entry {
5464 char dbf_name[DBF_NAME_LEN];
5465 debug_info_t *dbf_info;
5466 struct list_head dbf_list;
5467 };
5468
5469 static LIST_HEAD(qeth_dbf_list);
5470 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5471
qeth_get_dbf_entry(char * name)5472 static debug_info_t *qeth_get_dbf_entry(char *name)
5473 {
5474 struct qeth_dbf_entry *entry;
5475 debug_info_t *rc = NULL;
5476
5477 mutex_lock(&qeth_dbf_list_mutex);
5478 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5479 if (strcmp(entry->dbf_name, name) == 0) {
5480 rc = entry->dbf_info;
5481 break;
5482 }
5483 }
5484 mutex_unlock(&qeth_dbf_list_mutex);
5485 return rc;
5486 }
5487
qeth_add_dbf_entry(struct qeth_card * card,char * name)5488 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5489 {
5490 struct qeth_dbf_entry *new_entry;
5491
5492 card->debug = debug_register(name, 2, 1, 8);
5493 if (!card->debug) {
5494 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5495 goto err;
5496 }
5497 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5498 goto err_dbg;
5499 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5500 if (!new_entry)
5501 goto err_dbg;
5502 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5503 new_entry->dbf_info = card->debug;
5504 mutex_lock(&qeth_dbf_list_mutex);
5505 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5506 mutex_unlock(&qeth_dbf_list_mutex);
5507
5508 return 0;
5509
5510 err_dbg:
5511 debug_unregister(card->debug);
5512 err:
5513 return -ENOMEM;
5514 }
5515
qeth_clear_dbf_list(void)5516 static void qeth_clear_dbf_list(void)
5517 {
5518 struct qeth_dbf_entry *entry, *tmp;
5519
5520 mutex_lock(&qeth_dbf_list_mutex);
5521 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5522 list_del(&entry->dbf_list);
5523 debug_unregister(entry->dbf_info);
5524 kfree(entry);
5525 }
5526 mutex_unlock(&qeth_dbf_list_mutex);
5527 }
5528
qeth_core_probe_device(struct ccwgroup_device * gdev)5529 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5530 {
5531 struct qeth_card *card;
5532 struct device *dev;
5533 int rc;
5534 unsigned long flags;
5535 char dbf_name[DBF_NAME_LEN];
5536
5537 QETH_DBF_TEXT(SETUP, 2, "probedev");
5538
5539 dev = &gdev->dev;
5540 if (!get_device(dev))
5541 return -ENODEV;
5542
5543 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5544
5545 card = qeth_alloc_card();
5546 if (!card) {
5547 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5548 rc = -ENOMEM;
5549 goto err_dev;
5550 }
5551
5552 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5553 dev_name(&gdev->dev));
5554 card->debug = qeth_get_dbf_entry(dbf_name);
5555 if (!card->debug) {
5556 rc = qeth_add_dbf_entry(card, dbf_name);
5557 if (rc)
5558 goto err_card;
5559 }
5560
5561 card->read.ccwdev = gdev->cdev[0];
5562 card->write.ccwdev = gdev->cdev[1];
5563 card->data.ccwdev = gdev->cdev[2];
5564 dev_set_drvdata(&gdev->dev, card);
5565 card->gdev = gdev;
5566 gdev->cdev[0]->handler = qeth_irq;
5567 gdev->cdev[1]->handler = qeth_irq;
5568 gdev->cdev[2]->handler = qeth_irq;
5569
5570 rc = qeth_determine_card_type(card);
5571 if (rc) {
5572 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5573 goto err_card;
5574 }
5575 rc = qeth_setup_card(card);
5576 if (rc) {
5577 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5578 goto err_card;
5579 }
5580
5581 if (card->info.type == QETH_CARD_TYPE_OSN)
5582 gdev->dev.type = &qeth_osn_devtype;
5583 else
5584 gdev->dev.type = &qeth_generic_devtype;
5585
5586 switch (card->info.type) {
5587 case QETH_CARD_TYPE_OSN:
5588 case QETH_CARD_TYPE_OSM:
5589 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5590 if (rc)
5591 goto err_card;
5592 rc = card->discipline->setup(card->gdev);
5593 if (rc)
5594 goto err_disc;
5595 case QETH_CARD_TYPE_OSD:
5596 case QETH_CARD_TYPE_OSX:
5597 default:
5598 break;
5599 }
5600
5601 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5602 list_add_tail(&card->list, &qeth_core_card_list.list);
5603 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5604
5605 qeth_determine_capabilities(card);
5606 return 0;
5607
5608 err_disc:
5609 qeth_core_free_discipline(card);
5610 err_card:
5611 qeth_core_free_card(card);
5612 err_dev:
5613 put_device(dev);
5614 return rc;
5615 }
5616
qeth_core_remove_device(struct ccwgroup_device * gdev)5617 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5618 {
5619 unsigned long flags;
5620 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5621
5622 QETH_DBF_TEXT(SETUP, 2, "removedv");
5623
5624 if (card->discipline) {
5625 card->discipline->remove(gdev);
5626 qeth_core_free_discipline(card);
5627 }
5628
5629 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5630 list_del(&card->list);
5631 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5632 qeth_core_free_card(card);
5633 dev_set_drvdata(&gdev->dev, NULL);
5634 put_device(&gdev->dev);
5635 return;
5636 }
5637
qeth_core_set_online(struct ccwgroup_device * gdev)5638 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5639 {
5640 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5641 int rc = 0;
5642 int def_discipline;
5643
5644 if (!card->discipline) {
5645 if (card->info.type == QETH_CARD_TYPE_IQD)
5646 def_discipline = QETH_DISCIPLINE_LAYER3;
5647 else
5648 def_discipline = QETH_DISCIPLINE_LAYER2;
5649 rc = qeth_core_load_discipline(card, def_discipline);
5650 if (rc)
5651 goto err;
5652 rc = card->discipline->setup(card->gdev);
5653 if (rc)
5654 goto err;
5655 }
5656 rc = card->discipline->set_online(gdev);
5657 err:
5658 return rc;
5659 }
5660
qeth_core_set_offline(struct ccwgroup_device * gdev)5661 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5662 {
5663 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5664 return card->discipline->set_offline(gdev);
5665 }
5666
qeth_core_shutdown(struct ccwgroup_device * gdev)5667 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5668 {
5669 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5670 if (card->discipline && card->discipline->shutdown)
5671 card->discipline->shutdown(gdev);
5672 }
5673
qeth_core_prepare(struct ccwgroup_device * gdev)5674 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5675 {
5676 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5677 if (card->discipline && card->discipline->prepare)
5678 return card->discipline->prepare(gdev);
5679 return 0;
5680 }
5681
qeth_core_complete(struct ccwgroup_device * gdev)5682 static void qeth_core_complete(struct ccwgroup_device *gdev)
5683 {
5684 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5685 if (card->discipline && card->discipline->complete)
5686 card->discipline->complete(gdev);
5687 }
5688
qeth_core_freeze(struct ccwgroup_device * gdev)5689 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5690 {
5691 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5692 if (card->discipline && card->discipline->freeze)
5693 return card->discipline->freeze(gdev);
5694 return 0;
5695 }
5696
qeth_core_thaw(struct ccwgroup_device * gdev)5697 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5698 {
5699 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5700 if (card->discipline && card->discipline->thaw)
5701 return card->discipline->thaw(gdev);
5702 return 0;
5703 }
5704
qeth_core_restore(struct ccwgroup_device * gdev)5705 static int qeth_core_restore(struct ccwgroup_device *gdev)
5706 {
5707 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5708 if (card->discipline && card->discipline->restore)
5709 return card->discipline->restore(gdev);
5710 return 0;
5711 }
5712
5713 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5714 .driver = {
5715 .owner = THIS_MODULE,
5716 .name = "qeth",
5717 },
5718 .setup = qeth_core_probe_device,
5719 .remove = qeth_core_remove_device,
5720 .set_online = qeth_core_set_online,
5721 .set_offline = qeth_core_set_offline,
5722 .shutdown = qeth_core_shutdown,
5723 .prepare = qeth_core_prepare,
5724 .complete = qeth_core_complete,
5725 .freeze = qeth_core_freeze,
5726 .thaw = qeth_core_thaw,
5727 .restore = qeth_core_restore,
5728 };
5729
qeth_core_driver_group_store(struct device_driver * ddrv,const char * buf,size_t count)5730 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5731 const char *buf, size_t count)
5732 {
5733 int err;
5734
5735 err = ccwgroup_create_dev(qeth_core_root_dev,
5736 &qeth_core_ccwgroup_driver, 3, buf);
5737
5738 return err ? err : count;
5739 }
5740 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5741
5742 static struct attribute *qeth_drv_attrs[] = {
5743 &driver_attr_group.attr,
5744 NULL,
5745 };
5746 static struct attribute_group qeth_drv_attr_group = {
5747 .attrs = qeth_drv_attrs,
5748 };
5749 static const struct attribute_group *qeth_drv_attr_groups[] = {
5750 &qeth_drv_attr_group,
5751 NULL,
5752 };
5753
5754 static struct {
5755 const char str[ETH_GSTRING_LEN];
5756 } qeth_ethtool_stats_keys[] = {
5757 /* 0 */{"rx skbs"},
5758 {"rx buffers"},
5759 {"tx skbs"},
5760 {"tx buffers"},
5761 {"tx skbs no packing"},
5762 {"tx buffers no packing"},
5763 {"tx skbs packing"},
5764 {"tx buffers packing"},
5765 {"tx sg skbs"},
5766 {"tx sg frags"},
5767 /* 10 */{"rx sg skbs"},
5768 {"rx sg frags"},
5769 {"rx sg page allocs"},
5770 {"tx large kbytes"},
5771 {"tx large count"},
5772 {"tx pk state ch n->p"},
5773 {"tx pk state ch p->n"},
5774 {"tx pk watermark low"},
5775 {"tx pk watermark high"},
5776 {"queue 0 buffer usage"},
5777 /* 20 */{"queue 1 buffer usage"},
5778 {"queue 2 buffer usage"},
5779 {"queue 3 buffer usage"},
5780 {"rx poll time"},
5781 {"rx poll count"},
5782 {"rx do_QDIO time"},
5783 {"rx do_QDIO count"},
5784 {"tx handler time"},
5785 {"tx handler count"},
5786 {"tx time"},
5787 /* 30 */{"tx count"},
5788 {"tx do_QDIO time"},
5789 {"tx do_QDIO count"},
5790 {"tx csum"},
5791 {"tx lin"},
5792 {"cq handler count"},
5793 {"cq handler time"}
5794 };
5795
qeth_core_get_sset_count(struct net_device * dev,int stringset)5796 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5797 {
5798 switch (stringset) {
5799 case ETH_SS_STATS:
5800 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5801 default:
5802 return -EINVAL;
5803 }
5804 }
5805 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5806
qeth_core_get_ethtool_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)5807 void qeth_core_get_ethtool_stats(struct net_device *dev,
5808 struct ethtool_stats *stats, u64 *data)
5809 {
5810 struct qeth_card *card = dev->ml_priv;
5811 data[0] = card->stats.rx_packets -
5812 card->perf_stats.initial_rx_packets;
5813 data[1] = card->perf_stats.bufs_rec;
5814 data[2] = card->stats.tx_packets -
5815 card->perf_stats.initial_tx_packets;
5816 data[3] = card->perf_stats.bufs_sent;
5817 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5818 - card->perf_stats.skbs_sent_pack;
5819 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5820 data[6] = card->perf_stats.skbs_sent_pack;
5821 data[7] = card->perf_stats.bufs_sent_pack;
5822 data[8] = card->perf_stats.sg_skbs_sent;
5823 data[9] = card->perf_stats.sg_frags_sent;
5824 data[10] = card->perf_stats.sg_skbs_rx;
5825 data[11] = card->perf_stats.sg_frags_rx;
5826 data[12] = card->perf_stats.sg_alloc_page_rx;
5827 data[13] = (card->perf_stats.large_send_bytes >> 10);
5828 data[14] = card->perf_stats.large_send_cnt;
5829 data[15] = card->perf_stats.sc_dp_p;
5830 data[16] = card->perf_stats.sc_p_dp;
5831 data[17] = QETH_LOW_WATERMARK_PACK;
5832 data[18] = QETH_HIGH_WATERMARK_PACK;
5833 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5834 data[20] = (card->qdio.no_out_queues > 1) ?
5835 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5836 data[21] = (card->qdio.no_out_queues > 2) ?
5837 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5838 data[22] = (card->qdio.no_out_queues > 3) ?
5839 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5840 data[23] = card->perf_stats.inbound_time;
5841 data[24] = card->perf_stats.inbound_cnt;
5842 data[25] = card->perf_stats.inbound_do_qdio_time;
5843 data[26] = card->perf_stats.inbound_do_qdio_cnt;
5844 data[27] = card->perf_stats.outbound_handler_time;
5845 data[28] = card->perf_stats.outbound_handler_cnt;
5846 data[29] = card->perf_stats.outbound_time;
5847 data[30] = card->perf_stats.outbound_cnt;
5848 data[31] = card->perf_stats.outbound_do_qdio_time;
5849 data[32] = card->perf_stats.outbound_do_qdio_cnt;
5850 data[33] = card->perf_stats.tx_csum;
5851 data[34] = card->perf_stats.tx_lin;
5852 data[35] = card->perf_stats.cq_cnt;
5853 data[36] = card->perf_stats.cq_time;
5854 }
5855 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5856
qeth_core_get_strings(struct net_device * dev,u32 stringset,u8 * data)5857 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5858 {
5859 switch (stringset) {
5860 case ETH_SS_STATS:
5861 memcpy(data, &qeth_ethtool_stats_keys,
5862 sizeof(qeth_ethtool_stats_keys));
5863 break;
5864 default:
5865 WARN_ON(1);
5866 break;
5867 }
5868 }
5869 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5870
qeth_core_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)5871 void qeth_core_get_drvinfo(struct net_device *dev,
5872 struct ethtool_drvinfo *info)
5873 {
5874 struct qeth_card *card = dev->ml_priv;
5875
5876 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5877 sizeof(info->driver));
5878 strlcpy(info->version, "1.0", sizeof(info->version));
5879 strlcpy(info->fw_version, card->info.mcl_level,
5880 sizeof(info->fw_version));
5881 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5882 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5883 }
5884 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5885
5886 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5887 /* Autoneg and full-duplex are supported and advertized uncondionally. */
5888 /* Always advertize and support all speeds up to specified, and only one */
5889 /* specified port type. */
qeth_set_ecmd_adv_sup(struct ethtool_cmd * ecmd,int maxspeed,int porttype)5890 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5891 int maxspeed, int porttype)
5892 {
5893 int port_sup, port_adv, spd_sup, spd_adv;
5894
5895 switch (porttype) {
5896 case PORT_TP:
5897 port_sup = SUPPORTED_TP;
5898 port_adv = ADVERTISED_TP;
5899 break;
5900 case PORT_FIBRE:
5901 port_sup = SUPPORTED_FIBRE;
5902 port_adv = ADVERTISED_FIBRE;
5903 break;
5904 default:
5905 port_sup = SUPPORTED_TP;
5906 port_adv = ADVERTISED_TP;
5907 WARN_ON_ONCE(1);
5908 }
5909
5910 /* "Fallthrough" case'es ordered from high to low result in setting */
5911 /* flags cumulatively, starting from the specified speed and down to */
5912 /* the lowest possible. */
5913 spd_sup = 0;
5914 spd_adv = 0;
5915 switch (maxspeed) {
5916 case SPEED_10000:
5917 spd_sup |= SUPPORTED_10000baseT_Full;
5918 spd_adv |= ADVERTISED_10000baseT_Full;
5919 case SPEED_1000:
5920 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5921 spd_adv |= ADVERTISED_1000baseT_Half |
5922 ADVERTISED_1000baseT_Full;
5923 case SPEED_100:
5924 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5925 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5926 case SPEED_10:
5927 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5928 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5929 break;
5930 default:
5931 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5932 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5933 WARN_ON_ONCE(1);
5934 }
5935 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5936 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5937 }
5938
qeth_core_ethtool_get_settings(struct net_device * netdev,struct ethtool_cmd * ecmd)5939 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5940 struct ethtool_cmd *ecmd)
5941 {
5942 struct qeth_card *card = netdev->ml_priv;
5943 enum qeth_link_types link_type;
5944 struct carrier_info carrier_info;
5945 int rc;
5946 u32 speed;
5947
5948 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5949 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5950 else
5951 link_type = card->info.link_type;
5952
5953 ecmd->transceiver = XCVR_INTERNAL;
5954 ecmd->duplex = DUPLEX_FULL;
5955 ecmd->autoneg = AUTONEG_ENABLE;
5956
5957 switch (link_type) {
5958 case QETH_LINK_TYPE_FAST_ETH:
5959 case QETH_LINK_TYPE_LANE_ETH100:
5960 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5961 speed = SPEED_100;
5962 ecmd->port = PORT_TP;
5963 break;
5964
5965 case QETH_LINK_TYPE_GBIT_ETH:
5966 case QETH_LINK_TYPE_LANE_ETH1000:
5967 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5968 speed = SPEED_1000;
5969 ecmd->port = PORT_FIBRE;
5970 break;
5971
5972 case QETH_LINK_TYPE_10GBIT_ETH:
5973 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5974 speed = SPEED_10000;
5975 ecmd->port = PORT_FIBRE;
5976 break;
5977
5978 default:
5979 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5980 speed = SPEED_10;
5981 ecmd->port = PORT_TP;
5982 }
5983 ethtool_cmd_speed_set(ecmd, speed);
5984
5985 /* Check if we can obtain more accurate information. */
5986 /* If QUERY_CARD_INFO command is not supported or fails, */
5987 /* just return the heuristics that was filled above. */
5988 if (!qeth_card_hw_is_reachable(card))
5989 return -ENODEV;
5990 rc = qeth_query_card_info(card, &carrier_info);
5991 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
5992 return 0;
5993 if (rc) /* report error from the hardware operation */
5994 return rc;
5995 /* on success, fill in the information got from the hardware */
5996
5997 netdev_dbg(netdev,
5998 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5999 carrier_info.card_type,
6000 carrier_info.port_mode,
6001 carrier_info.port_speed);
6002
6003 /* Update attributes for which we've obtained more authoritative */
6004 /* information, leave the rest the way they where filled above. */
6005 switch (carrier_info.card_type) {
6006 case CARD_INFO_TYPE_1G_COPPER_A:
6007 case CARD_INFO_TYPE_1G_COPPER_B:
6008 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
6009 ecmd->port = PORT_TP;
6010 break;
6011 case CARD_INFO_TYPE_1G_FIBRE_A:
6012 case CARD_INFO_TYPE_1G_FIBRE_B:
6013 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6014 ecmd->port = PORT_FIBRE;
6015 break;
6016 case CARD_INFO_TYPE_10G_FIBRE_A:
6017 case CARD_INFO_TYPE_10G_FIBRE_B:
6018 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6019 ecmd->port = PORT_FIBRE;
6020 break;
6021 }
6022
6023 switch (carrier_info.port_mode) {
6024 case CARD_INFO_PORTM_FULLDUPLEX:
6025 ecmd->duplex = DUPLEX_FULL;
6026 break;
6027 case CARD_INFO_PORTM_HALFDUPLEX:
6028 ecmd->duplex = DUPLEX_HALF;
6029 break;
6030 }
6031
6032 switch (carrier_info.port_speed) {
6033 case CARD_INFO_PORTS_10M:
6034 speed = SPEED_10;
6035 break;
6036 case CARD_INFO_PORTS_100M:
6037 speed = SPEED_100;
6038 break;
6039 case CARD_INFO_PORTS_1G:
6040 speed = SPEED_1000;
6041 break;
6042 case CARD_INFO_PORTS_10G:
6043 speed = SPEED_10000;
6044 break;
6045 }
6046 ethtool_cmd_speed_set(ecmd, speed);
6047
6048 return 0;
6049 }
6050 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6051
qeth_send_checksum_command(struct qeth_card * card)6052 static int qeth_send_checksum_command(struct qeth_card *card)
6053 {
6054 int rc;
6055
6056 rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
6057 IPA_CMD_ASS_START, 0);
6058 if (rc) {
6059 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
6060 "failed, using SW checksumming\n",
6061 QETH_CARD_IFNAME(card));
6062 return rc;
6063 }
6064 rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
6065 IPA_CMD_ASS_ENABLE,
6066 card->info.csum_mask);
6067 if (rc) {
6068 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
6069 "failed, using SW checksumming\n",
6070 QETH_CARD_IFNAME(card));
6071 return rc;
6072 }
6073 return 0;
6074 }
6075
qeth_set_rx_csum(struct qeth_card * card,int on)6076 int qeth_set_rx_csum(struct qeth_card *card, int on)
6077 {
6078 int rc;
6079
6080 if (on) {
6081 rc = qeth_send_checksum_command(card);
6082 if (rc)
6083 return -EIO;
6084 dev_info(&card->gdev->dev,
6085 "HW Checksumming (inbound) enabled\n");
6086 } else {
6087 rc = qeth_send_simple_setassparms(card,
6088 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
6089 if (rc)
6090 return -EIO;
6091 }
6092 return 0;
6093 }
6094 EXPORT_SYMBOL_GPL(qeth_set_rx_csum);
6095
qeth_start_ipa_tx_checksum(struct qeth_card * card)6096 int qeth_start_ipa_tx_checksum(struct qeth_card *card)
6097 {
6098 int rc = 0;
6099
6100 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6101 return rc;
6102 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
6103 IPA_CMD_ASS_START, 0);
6104 if (rc)
6105 goto err_out;
6106 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
6107 IPA_CMD_ASS_ENABLE,
6108 card->info.tx_csum_mask);
6109 if (rc)
6110 goto err_out;
6111
6112 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
6113 return rc;
6114 err_out:
6115 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
6116 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
6117 return rc;
6118 }
6119 EXPORT_SYMBOL_GPL(qeth_start_ipa_tx_checksum);
6120
qeth_core_init(void)6121 static int __init qeth_core_init(void)
6122 {
6123 int rc;
6124
6125 pr_info("loading core functions\n");
6126 INIT_LIST_HEAD(&qeth_core_card_list.list);
6127 INIT_LIST_HEAD(&qeth_dbf_list);
6128 rwlock_init(&qeth_core_card_list.rwlock);
6129 mutex_init(&qeth_mod_mutex);
6130
6131 qeth_wq = create_singlethread_workqueue("qeth_wq");
6132
6133 rc = qeth_register_dbf_views();
6134 if (rc)
6135 goto out_err;
6136 qeth_core_root_dev = root_device_register("qeth");
6137 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6138 if (rc)
6139 goto register_err;
6140 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6141 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6142 if (!qeth_core_header_cache) {
6143 rc = -ENOMEM;
6144 goto slab_err;
6145 }
6146 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6147 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6148 if (!qeth_qdio_outbuf_cache) {
6149 rc = -ENOMEM;
6150 goto cqslab_err;
6151 }
6152 rc = ccw_driver_register(&qeth_ccw_driver);
6153 if (rc)
6154 goto ccw_err;
6155 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6156 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6157 if (rc)
6158 goto ccwgroup_err;
6159
6160 return 0;
6161
6162 ccwgroup_err:
6163 ccw_driver_unregister(&qeth_ccw_driver);
6164 ccw_err:
6165 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6166 cqslab_err:
6167 kmem_cache_destroy(qeth_core_header_cache);
6168 slab_err:
6169 root_device_unregister(qeth_core_root_dev);
6170 register_err:
6171 qeth_unregister_dbf_views();
6172 out_err:
6173 pr_err("Initializing the qeth device driver failed\n");
6174 return rc;
6175 }
6176
qeth_core_exit(void)6177 static void __exit qeth_core_exit(void)
6178 {
6179 qeth_clear_dbf_list();
6180 destroy_workqueue(qeth_wq);
6181 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6182 ccw_driver_unregister(&qeth_ccw_driver);
6183 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6184 kmem_cache_destroy(qeth_core_header_cache);
6185 root_device_unregister(qeth_core_root_dev);
6186 qeth_unregister_dbf_views();
6187 pr_info("core functions removed\n");
6188 }
6189
6190 module_init(qeth_core_init);
6191 module_exit(qeth_core_exit);
6192 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6193 MODULE_DESCRIPTION("qeth core functions");
6194 MODULE_LICENSE("GPL");
6195