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 <linux/if_vlan.h>
23 #include <linux/netdevice.h>
24 #include <linux/netdev_features.h>
25 #include <linux/skbuff.h>
26 #include <linux/vmalloc.h>
27
28 #include <net/iucv/af_iucv.h>
29 #include <net/dsfield.h>
30
31 #include <asm/ebcdic.h>
32 #include <asm/chpid.h>
33 #include <asm/io.h>
34 #include <asm/sysinfo.h>
35 #include <asm/compat.h>
36 #include <asm/diag.h>
37 #include <asm/cio.h>
38 #include <asm/ccwdev.h>
39
40 #include "qeth_core.h"
41
42 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
43 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
44 /* N P A M L V H */
45 [QETH_DBF_SETUP] = {"qeth_setup",
46 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
47 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
48 &debug_sprintf_view, NULL},
49 [QETH_DBF_CTRL] = {"qeth_control",
50 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
51 };
52 EXPORT_SYMBOL_GPL(qeth_dbf);
53
54 struct qeth_card_list_struct qeth_core_card_list;
55 EXPORT_SYMBOL_GPL(qeth_core_card_list);
56 struct kmem_cache *qeth_core_header_cache;
57 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
58 static struct kmem_cache *qeth_qdio_outbuf_cache;
59
60 static struct device *qeth_core_root_dev;
61 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
62 static struct lock_class_key qdio_out_skb_queue_key;
63 static struct mutex qeth_mod_mutex;
64
65 static void qeth_send_control_data_cb(struct qeth_channel *,
66 struct qeth_cmd_buffer *);
67 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
68 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
69 static void qeth_free_buffer_pool(struct qeth_card *);
70 static int qeth_qdio_establish(struct qeth_card *);
71 static void qeth_free_qdio_buffers(struct qeth_card *);
72 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
73 struct qeth_qdio_out_buffer *buf,
74 enum iucv_tx_notify notification);
75 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
76 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
77 struct qeth_qdio_out_buffer *buf,
78 enum qeth_qdio_buffer_states newbufstate);
79 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
80
81 struct workqueue_struct *qeth_wq;
82 EXPORT_SYMBOL_GPL(qeth_wq);
83
qeth_card_hw_is_reachable(struct qeth_card * card)84 int qeth_card_hw_is_reachable(struct qeth_card *card)
85 {
86 return (card->state == CARD_STATE_SOFTSETUP) ||
87 (card->state == CARD_STATE_UP);
88 }
89 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
90
qeth_close_dev_handler(struct work_struct * work)91 static void qeth_close_dev_handler(struct work_struct *work)
92 {
93 struct qeth_card *card;
94
95 card = container_of(work, struct qeth_card, close_dev_work);
96 QETH_CARD_TEXT(card, 2, "cldevhdl");
97 rtnl_lock();
98 dev_close(card->dev);
99 rtnl_unlock();
100 ccwgroup_set_offline(card->gdev);
101 }
102
qeth_close_dev(struct qeth_card * card)103 void qeth_close_dev(struct qeth_card *card)
104 {
105 QETH_CARD_TEXT(card, 2, "cldevsubm");
106 queue_work(qeth_wq, &card->close_dev_work);
107 }
108 EXPORT_SYMBOL_GPL(qeth_close_dev);
109
qeth_get_cardname(struct qeth_card * card)110 static const char *qeth_get_cardname(struct qeth_card *card)
111 {
112 if (card->info.guestlan) {
113 switch (card->info.type) {
114 case QETH_CARD_TYPE_OSD:
115 return " Virtual NIC QDIO";
116 case QETH_CARD_TYPE_IQD:
117 return " Virtual NIC Hiper";
118 case QETH_CARD_TYPE_OSM:
119 return " Virtual NIC QDIO - OSM";
120 case QETH_CARD_TYPE_OSX:
121 return " Virtual NIC QDIO - OSX";
122 default:
123 return " unknown";
124 }
125 } else {
126 switch (card->info.type) {
127 case QETH_CARD_TYPE_OSD:
128 return " OSD Express";
129 case QETH_CARD_TYPE_IQD:
130 return " HiperSockets";
131 case QETH_CARD_TYPE_OSN:
132 return " OSN QDIO";
133 case QETH_CARD_TYPE_OSM:
134 return " OSM QDIO";
135 case QETH_CARD_TYPE_OSX:
136 return " OSX QDIO";
137 default:
138 return " unknown";
139 }
140 }
141 return " n/a";
142 }
143
144 /* max length to be returned: 14 */
qeth_get_cardname_short(struct qeth_card * card)145 const char *qeth_get_cardname_short(struct qeth_card *card)
146 {
147 if (card->info.guestlan) {
148 switch (card->info.type) {
149 case QETH_CARD_TYPE_OSD:
150 return "Virt.NIC QDIO";
151 case QETH_CARD_TYPE_IQD:
152 return "Virt.NIC Hiper";
153 case QETH_CARD_TYPE_OSM:
154 return "Virt.NIC OSM";
155 case QETH_CARD_TYPE_OSX:
156 return "Virt.NIC OSX";
157 default:
158 return "unknown";
159 }
160 } else {
161 switch (card->info.type) {
162 case QETH_CARD_TYPE_OSD:
163 switch (card->info.link_type) {
164 case QETH_LINK_TYPE_FAST_ETH:
165 return "OSD_100";
166 case QETH_LINK_TYPE_HSTR:
167 return "HSTR";
168 case QETH_LINK_TYPE_GBIT_ETH:
169 return "OSD_1000";
170 case QETH_LINK_TYPE_10GBIT_ETH:
171 return "OSD_10GIG";
172 case QETH_LINK_TYPE_LANE_ETH100:
173 return "OSD_FE_LANE";
174 case QETH_LINK_TYPE_LANE_TR:
175 return "OSD_TR_LANE";
176 case QETH_LINK_TYPE_LANE_ETH1000:
177 return "OSD_GbE_LANE";
178 case QETH_LINK_TYPE_LANE:
179 return "OSD_ATM_LANE";
180 default:
181 return "OSD_Express";
182 }
183 case QETH_CARD_TYPE_IQD:
184 return "HiperSockets";
185 case QETH_CARD_TYPE_OSN:
186 return "OSN";
187 case QETH_CARD_TYPE_OSM:
188 return "OSM_1000";
189 case QETH_CARD_TYPE_OSX:
190 return "OSX_10GIG";
191 default:
192 return "unknown";
193 }
194 }
195 return "n/a";
196 }
197
qeth_set_recovery_task(struct qeth_card * card)198 void qeth_set_recovery_task(struct qeth_card *card)
199 {
200 card->recovery_task = current;
201 }
202 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
203
qeth_clear_recovery_task(struct qeth_card * card)204 void qeth_clear_recovery_task(struct qeth_card *card)
205 {
206 card->recovery_task = NULL;
207 }
208 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
209
qeth_is_recovery_task(const struct qeth_card * card)210 static bool qeth_is_recovery_task(const struct qeth_card *card)
211 {
212 return card->recovery_task == current;
213 }
214
qeth_set_allowed_threads(struct qeth_card * card,unsigned long threads,int clear_start_mask)215 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
216 int clear_start_mask)
217 {
218 unsigned long flags;
219
220 spin_lock_irqsave(&card->thread_mask_lock, flags);
221 card->thread_allowed_mask = threads;
222 if (clear_start_mask)
223 card->thread_start_mask &= threads;
224 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
225 wake_up(&card->wait_q);
226 }
227 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
228
qeth_threads_running(struct qeth_card * card,unsigned long threads)229 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
230 {
231 unsigned long flags;
232 int rc = 0;
233
234 spin_lock_irqsave(&card->thread_mask_lock, flags);
235 rc = (card->thread_running_mask & threads);
236 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
237 return rc;
238 }
239 EXPORT_SYMBOL_GPL(qeth_threads_running);
240
qeth_wait_for_threads(struct qeth_card * card,unsigned long threads)241 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
242 {
243 if (qeth_is_recovery_task(card))
244 return 0;
245 return wait_event_interruptible(card->wait_q,
246 qeth_threads_running(card, threads) == 0);
247 }
248 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
249
qeth_clear_working_pool_list(struct qeth_card * card)250 void qeth_clear_working_pool_list(struct qeth_card *card)
251 {
252 struct qeth_buffer_pool_entry *pool_entry, *tmp;
253
254 QETH_CARD_TEXT(card, 5, "clwrklst");
255 list_for_each_entry_safe(pool_entry, tmp,
256 &card->qdio.in_buf_pool.entry_list, list){
257 list_del(&pool_entry->list);
258 }
259 }
260 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
261
qeth_alloc_buffer_pool(struct qeth_card * card)262 static int qeth_alloc_buffer_pool(struct qeth_card *card)
263 {
264 struct qeth_buffer_pool_entry *pool_entry;
265 void *ptr;
266 int i, j;
267
268 QETH_CARD_TEXT(card, 5, "alocpool");
269 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
270 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
271 if (!pool_entry) {
272 qeth_free_buffer_pool(card);
273 return -ENOMEM;
274 }
275 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
276 ptr = (void *) __get_free_page(GFP_KERNEL);
277 if (!ptr) {
278 while (j > 0)
279 free_page((unsigned long)
280 pool_entry->elements[--j]);
281 kfree(pool_entry);
282 qeth_free_buffer_pool(card);
283 return -ENOMEM;
284 }
285 pool_entry->elements[j] = ptr;
286 }
287 list_add(&pool_entry->init_list,
288 &card->qdio.init_pool.entry_list);
289 }
290 return 0;
291 }
292
qeth_realloc_buffer_pool(struct qeth_card * card,int bufcnt)293 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
294 {
295 QETH_CARD_TEXT(card, 2, "realcbp");
296
297 if ((card->state != CARD_STATE_DOWN) &&
298 (card->state != CARD_STATE_RECOVER))
299 return -EPERM;
300
301 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
302 qeth_clear_working_pool_list(card);
303 qeth_free_buffer_pool(card);
304 card->qdio.in_buf_pool.buf_count = bufcnt;
305 card->qdio.init_pool.buf_count = bufcnt;
306 return qeth_alloc_buffer_pool(card);
307 }
308 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
309
qeth_free_qdio_queue(struct qeth_qdio_q * q)310 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
311 {
312 if (!q)
313 return;
314
315 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
316 kfree(q);
317 }
318
qeth_alloc_qdio_queue(void)319 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
320 {
321 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
322 int i;
323
324 if (!q)
325 return NULL;
326
327 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
328 kfree(q);
329 return NULL;
330 }
331
332 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
333 q->bufs[i].buffer = q->qdio_bufs[i];
334
335 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
336 return q;
337 }
338
qeth_cq_init(struct qeth_card * card)339 static int qeth_cq_init(struct qeth_card *card)
340 {
341 int rc;
342
343 if (card->options.cq == QETH_CQ_ENABLED) {
344 QETH_DBF_TEXT(SETUP, 2, "cqinit");
345 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
346 QDIO_MAX_BUFFERS_PER_Q);
347 card->qdio.c_q->next_buf_to_init = 127;
348 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
349 card->qdio.no_in_queues - 1, 0,
350 127);
351 if (rc) {
352 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
353 goto out;
354 }
355 }
356 rc = 0;
357 out:
358 return rc;
359 }
360
qeth_alloc_cq(struct qeth_card * card)361 static int qeth_alloc_cq(struct qeth_card *card)
362 {
363 int rc;
364
365 if (card->options.cq == QETH_CQ_ENABLED) {
366 int i;
367 struct qdio_outbuf_state *outbuf_states;
368
369 QETH_DBF_TEXT(SETUP, 2, "cqon");
370 card->qdio.c_q = qeth_alloc_qdio_queue();
371 if (!card->qdio.c_q) {
372 rc = -1;
373 goto kmsg_out;
374 }
375 card->qdio.no_in_queues = 2;
376 card->qdio.out_bufstates =
377 kzalloc(card->qdio.no_out_queues *
378 QDIO_MAX_BUFFERS_PER_Q *
379 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
380 outbuf_states = card->qdio.out_bufstates;
381 if (outbuf_states == NULL) {
382 rc = -1;
383 goto free_cq_out;
384 }
385 for (i = 0; i < card->qdio.no_out_queues; ++i) {
386 card->qdio.out_qs[i]->bufstates = outbuf_states;
387 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
388 }
389 } else {
390 QETH_DBF_TEXT(SETUP, 2, "nocq");
391 card->qdio.c_q = NULL;
392 card->qdio.no_in_queues = 1;
393 }
394 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
395 rc = 0;
396 out:
397 return rc;
398 free_cq_out:
399 qeth_free_qdio_queue(card->qdio.c_q);
400 card->qdio.c_q = NULL;
401 kmsg_out:
402 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
403 goto out;
404 }
405
qeth_free_cq(struct qeth_card * card)406 static void qeth_free_cq(struct qeth_card *card)
407 {
408 if (card->qdio.c_q) {
409 --card->qdio.no_in_queues;
410 qeth_free_qdio_queue(card->qdio.c_q);
411 card->qdio.c_q = NULL;
412 }
413 kfree(card->qdio.out_bufstates);
414 card->qdio.out_bufstates = NULL;
415 }
416
qeth_compute_cq_notification(int sbalf15,int delayed)417 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
418 int delayed)
419 {
420 enum iucv_tx_notify n;
421
422 switch (sbalf15) {
423 case 0:
424 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
425 break;
426 case 4:
427 case 16:
428 case 17:
429 case 18:
430 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
431 TX_NOTIFY_UNREACHABLE;
432 break;
433 default:
434 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
435 TX_NOTIFY_GENERALERROR;
436 break;
437 }
438
439 return n;
440 }
441
qeth_cleanup_handled_pending(struct qeth_qdio_out_q * q,int bidx,int forced_cleanup)442 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
443 int forced_cleanup)
444 {
445 if (q->card->options.cq != QETH_CQ_ENABLED)
446 return;
447
448 if (q->bufs[bidx]->next_pending != NULL) {
449 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
450 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
451
452 while (c) {
453 if (forced_cleanup ||
454 atomic_read(&c->state) ==
455 QETH_QDIO_BUF_HANDLED_DELAYED) {
456 struct qeth_qdio_out_buffer *f = c;
457 QETH_CARD_TEXT(f->q->card, 5, "fp");
458 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
459 /* release here to avoid interleaving between
460 outbound tasklet and inbound tasklet
461 regarding notifications and lifecycle */
462 qeth_release_skbs(c);
463
464 c = f->next_pending;
465 WARN_ON_ONCE(head->next_pending != f);
466 head->next_pending = c;
467 kmem_cache_free(qeth_qdio_outbuf_cache, f);
468 } else {
469 head = c;
470 c = c->next_pending;
471 }
472
473 }
474 }
475 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
476 QETH_QDIO_BUF_HANDLED_DELAYED)) {
477 /* for recovery situations */
478 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
479 qeth_init_qdio_out_buf(q, bidx);
480 QETH_CARD_TEXT(q->card, 2, "clprecov");
481 }
482 }
483
484
qeth_qdio_handle_aob(struct qeth_card * card,unsigned long phys_aob_addr)485 static void qeth_qdio_handle_aob(struct qeth_card *card,
486 unsigned long phys_aob_addr)
487 {
488 struct qaob *aob;
489 struct qeth_qdio_out_buffer *buffer;
490 enum iucv_tx_notify notification;
491
492 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
493 QETH_CARD_TEXT(card, 5, "haob");
494 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
495 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
496 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
497
498 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
499 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
500 notification = TX_NOTIFY_OK;
501 } else {
502 WARN_ON_ONCE(atomic_read(&buffer->state) !=
503 QETH_QDIO_BUF_PENDING);
504 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
505 notification = TX_NOTIFY_DELAYED_OK;
506 }
507
508 if (aob->aorc != 0) {
509 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
510 notification = qeth_compute_cq_notification(aob->aorc, 1);
511 }
512 qeth_notify_skbs(buffer->q, buffer, notification);
513
514 buffer->aob = NULL;
515 qeth_clear_output_buffer(buffer->q, buffer,
516 QETH_QDIO_BUF_HANDLED_DELAYED);
517
518 /* from here on: do not touch buffer anymore */
519 qdio_release_aob(aob);
520 }
521
qeth_is_cq(struct qeth_card * card,unsigned int queue)522 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
523 {
524 return card->options.cq == QETH_CQ_ENABLED &&
525 card->qdio.c_q != NULL &&
526 queue != 0 &&
527 queue == card->qdio.no_in_queues - 1;
528 }
529
__qeth_issue_next_read(struct qeth_card * card)530 static int __qeth_issue_next_read(struct qeth_card *card)
531 {
532 int rc;
533 struct qeth_cmd_buffer *iob;
534
535 QETH_CARD_TEXT(card, 5, "issnxrd");
536 if (card->read.state != CH_STATE_UP)
537 return -EIO;
538 iob = qeth_get_buffer(&card->read);
539 if (!iob) {
540 dev_warn(&card->gdev->dev, "The qeth device driver "
541 "failed to recover an error on the device\n");
542 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
543 "available\n", dev_name(&card->gdev->dev));
544 return -ENOMEM;
545 }
546 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
547 QETH_CARD_TEXT(card, 6, "noirqpnd");
548 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
549 (addr_t) iob, 0, 0);
550 if (rc) {
551 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
552 "rc=%i\n", dev_name(&card->gdev->dev), rc);
553 atomic_set(&card->read.irq_pending, 0);
554 card->read_or_write_problem = 1;
555 qeth_schedule_recovery(card);
556 wake_up(&card->wait_q);
557 }
558 return rc;
559 }
560
qeth_issue_next_read(struct qeth_card * card)561 static int qeth_issue_next_read(struct qeth_card *card)
562 {
563 int ret;
564
565 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
566 ret = __qeth_issue_next_read(card);
567 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
568
569 return ret;
570 }
571
qeth_alloc_reply(struct qeth_card * card)572 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
573 {
574 struct qeth_reply *reply;
575
576 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
577 if (reply) {
578 atomic_set(&reply->refcnt, 1);
579 atomic_set(&reply->received, 0);
580 reply->card = card;
581 }
582 return reply;
583 }
584
qeth_get_reply(struct qeth_reply * reply)585 static void qeth_get_reply(struct qeth_reply *reply)
586 {
587 WARN_ON(atomic_read(&reply->refcnt) <= 0);
588 atomic_inc(&reply->refcnt);
589 }
590
qeth_put_reply(struct qeth_reply * reply)591 static void qeth_put_reply(struct qeth_reply *reply)
592 {
593 WARN_ON(atomic_read(&reply->refcnt) <= 0);
594 if (atomic_dec_and_test(&reply->refcnt))
595 kfree(reply);
596 }
597
qeth_issue_ipa_msg(struct qeth_ipa_cmd * cmd,int rc,struct qeth_card * card)598 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
599 struct qeth_card *card)
600 {
601 char *ipa_name;
602 int com = cmd->hdr.command;
603 ipa_name = qeth_get_ipa_cmd_name(com);
604 if (rc)
605 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
606 "x%X \"%s\"\n",
607 ipa_name, com, dev_name(&card->gdev->dev),
608 QETH_CARD_IFNAME(card), rc,
609 qeth_get_ipa_msg(rc));
610 else
611 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
612 ipa_name, com, dev_name(&card->gdev->dev),
613 QETH_CARD_IFNAME(card));
614 }
615
qeth_check_ipa_data(struct qeth_card * card,struct qeth_cmd_buffer * iob)616 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
617 struct qeth_cmd_buffer *iob)
618 {
619 struct qeth_ipa_cmd *cmd = NULL;
620
621 QETH_CARD_TEXT(card, 5, "chkipad");
622 if (IS_IPA(iob->data)) {
623 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
624 if (IS_IPA_REPLY(cmd)) {
625 if (cmd->hdr.command != IPA_CMD_SETCCID &&
626 cmd->hdr.command != IPA_CMD_DELCCID &&
627 cmd->hdr.command != IPA_CMD_MODCCID &&
628 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
629 qeth_issue_ipa_msg(cmd,
630 cmd->hdr.return_code, card);
631 return cmd;
632 } else {
633 switch (cmd->hdr.command) {
634 case IPA_CMD_STOPLAN:
635 if (cmd->hdr.return_code ==
636 IPA_RC_VEPA_TO_VEB_TRANSITION) {
637 dev_err(&card->gdev->dev,
638 "Interface %s is down because the "
639 "adjacent port is no longer in "
640 "reflective relay mode\n",
641 QETH_CARD_IFNAME(card));
642 qeth_close_dev(card);
643 } else {
644 dev_warn(&card->gdev->dev,
645 "The link for interface %s on CHPID"
646 " 0x%X failed\n",
647 QETH_CARD_IFNAME(card),
648 card->info.chpid);
649 qeth_issue_ipa_msg(cmd,
650 cmd->hdr.return_code, card);
651 }
652 card->lan_online = 0;
653 if (card->dev && netif_carrier_ok(card->dev))
654 netif_carrier_off(card->dev);
655 return NULL;
656 case IPA_CMD_STARTLAN:
657 dev_info(&card->gdev->dev,
658 "The link for %s on CHPID 0x%X has"
659 " been restored\n",
660 QETH_CARD_IFNAME(card),
661 card->info.chpid);
662 netif_carrier_on(card->dev);
663 card->lan_online = 1;
664 if (card->info.hwtrap)
665 card->info.hwtrap = 2;
666 qeth_schedule_recovery(card);
667 return NULL;
668 case IPA_CMD_SETBRIDGEPORT_IQD:
669 case IPA_CMD_SETBRIDGEPORT_OSA:
670 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
671 if (card->discipline->control_event_handler
672 (card, cmd))
673 return cmd;
674 else
675 return NULL;
676 case IPA_CMD_MODCCID:
677 return cmd;
678 case IPA_CMD_REGISTER_LOCAL_ADDR:
679 QETH_CARD_TEXT(card, 3, "irla");
680 break;
681 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
682 QETH_CARD_TEXT(card, 3, "urla");
683 break;
684 default:
685 QETH_DBF_MESSAGE(2, "Received data is IPA "
686 "but not a reply!\n");
687 break;
688 }
689 }
690 }
691 return cmd;
692 }
693
qeth_clear_ipacmd_list(struct qeth_card * card)694 void qeth_clear_ipacmd_list(struct qeth_card *card)
695 {
696 struct qeth_reply *reply, *r;
697 unsigned long flags;
698
699 QETH_CARD_TEXT(card, 4, "clipalst");
700
701 spin_lock_irqsave(&card->lock, flags);
702 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
703 qeth_get_reply(reply);
704 reply->rc = -EIO;
705 atomic_inc(&reply->received);
706 list_del_init(&reply->list);
707 wake_up(&reply->wait_q);
708 qeth_put_reply(reply);
709 }
710 spin_unlock_irqrestore(&card->lock, flags);
711 atomic_set(&card->write.irq_pending, 0);
712 }
713 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
714
qeth_check_idx_response(struct qeth_card * card,unsigned char * buffer)715 static int qeth_check_idx_response(struct qeth_card *card,
716 unsigned char *buffer)
717 {
718 if (!buffer)
719 return 0;
720
721 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
722 if ((buffer[2] & 0xc0) == 0xc0) {
723 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
724 "with cause code 0x%02x%s\n",
725 buffer[4],
726 ((buffer[4] == 0x22) ?
727 " -- try another portname" : ""));
728 QETH_CARD_TEXT(card, 2, "ckidxres");
729 QETH_CARD_TEXT(card, 2, " idxterm");
730 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
731 if (buffer[4] == 0xf6) {
732 dev_err(&card->gdev->dev,
733 "The qeth device is not configured "
734 "for the OSI layer required by z/VM\n");
735 return -EPERM;
736 }
737 return -EIO;
738 }
739 return 0;
740 }
741
CARD_FROM_CDEV(struct ccw_device * cdev)742 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
743 {
744 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
745 dev_get_drvdata(&cdev->dev))->dev);
746 return card;
747 }
748
qeth_setup_ccw(struct qeth_channel * channel,unsigned char * iob,__u32 len)749 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
750 __u32 len)
751 {
752 struct qeth_card *card;
753
754 card = CARD_FROM_CDEV(channel->ccwdev);
755 QETH_CARD_TEXT(card, 4, "setupccw");
756 if (channel == &card->read)
757 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
758 else
759 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
760 channel->ccw.count = len;
761 channel->ccw.cda = (__u32) __pa(iob);
762 }
763
__qeth_get_buffer(struct qeth_channel * channel)764 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
765 {
766 __u8 index;
767
768 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
769 index = channel->io_buf_no;
770 do {
771 if (channel->iob[index].state == BUF_STATE_FREE) {
772 channel->iob[index].state = BUF_STATE_LOCKED;
773 channel->io_buf_no = (channel->io_buf_no + 1) %
774 QETH_CMD_BUFFER_NO;
775 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
776 return channel->iob + index;
777 }
778 index = (index + 1) % QETH_CMD_BUFFER_NO;
779 } while (index != channel->io_buf_no);
780
781 return NULL;
782 }
783
qeth_release_buffer(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)784 void qeth_release_buffer(struct qeth_channel *channel,
785 struct qeth_cmd_buffer *iob)
786 {
787 unsigned long flags;
788
789 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
790 spin_lock_irqsave(&channel->iob_lock, flags);
791 memset(iob->data, 0, QETH_BUFSIZE);
792 iob->state = BUF_STATE_FREE;
793 iob->callback = qeth_send_control_data_cb;
794 iob->rc = 0;
795 spin_unlock_irqrestore(&channel->iob_lock, flags);
796 wake_up(&channel->wait_q);
797 }
798 EXPORT_SYMBOL_GPL(qeth_release_buffer);
799
qeth_get_buffer(struct qeth_channel * channel)800 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
801 {
802 struct qeth_cmd_buffer *buffer = NULL;
803 unsigned long flags;
804
805 spin_lock_irqsave(&channel->iob_lock, flags);
806 buffer = __qeth_get_buffer(channel);
807 spin_unlock_irqrestore(&channel->iob_lock, flags);
808 return buffer;
809 }
810
qeth_wait_for_buffer(struct qeth_channel * channel)811 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
812 {
813 struct qeth_cmd_buffer *buffer;
814 wait_event(channel->wait_q,
815 ((buffer = qeth_get_buffer(channel)) != NULL));
816 return buffer;
817 }
818 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
819
qeth_clear_cmd_buffers(struct qeth_channel * channel)820 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
821 {
822 int cnt;
823
824 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
825 qeth_release_buffer(channel, &channel->iob[cnt]);
826 channel->buf_no = 0;
827 channel->io_buf_no = 0;
828 }
829 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
830
qeth_send_control_data_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)831 static void qeth_send_control_data_cb(struct qeth_channel *channel,
832 struct qeth_cmd_buffer *iob)
833 {
834 struct qeth_card *card;
835 struct qeth_reply *reply, *r;
836 struct qeth_ipa_cmd *cmd;
837 unsigned long flags;
838 int keep_reply;
839 int rc = 0;
840
841 card = CARD_FROM_CDEV(channel->ccwdev);
842 QETH_CARD_TEXT(card, 4, "sndctlcb");
843 rc = qeth_check_idx_response(card, iob->data);
844 switch (rc) {
845 case 0:
846 break;
847 case -EIO:
848 qeth_clear_ipacmd_list(card);
849 qeth_schedule_recovery(card);
850 /* fall through */
851 default:
852 goto out;
853 }
854
855 cmd = qeth_check_ipa_data(card, iob);
856 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
857 goto out;
858 /*in case of OSN : check if cmd is set */
859 if (card->info.type == QETH_CARD_TYPE_OSN &&
860 cmd &&
861 cmd->hdr.command != IPA_CMD_STARTLAN &&
862 card->osn_info.assist_cb != NULL) {
863 card->osn_info.assist_cb(card->dev, cmd);
864 goto out;
865 }
866
867 spin_lock_irqsave(&card->lock, flags);
868 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
869 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
870 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
871 qeth_get_reply(reply);
872 list_del_init(&reply->list);
873 spin_unlock_irqrestore(&card->lock, flags);
874 keep_reply = 0;
875 if (reply->callback != NULL) {
876 if (cmd) {
877 reply->offset = (__u16)((char *)cmd -
878 (char *)iob->data);
879 keep_reply = reply->callback(card,
880 reply,
881 (unsigned long)cmd);
882 } else
883 keep_reply = reply->callback(card,
884 reply,
885 (unsigned long)iob);
886 }
887 if (cmd)
888 reply->rc = (u16) cmd->hdr.return_code;
889 else if (iob->rc)
890 reply->rc = iob->rc;
891 if (keep_reply) {
892 spin_lock_irqsave(&card->lock, flags);
893 list_add_tail(&reply->list,
894 &card->cmd_waiter_list);
895 spin_unlock_irqrestore(&card->lock, flags);
896 } else {
897 atomic_inc(&reply->received);
898 wake_up(&reply->wait_q);
899 }
900 qeth_put_reply(reply);
901 goto out;
902 }
903 }
904 spin_unlock_irqrestore(&card->lock, flags);
905 out:
906 memcpy(&card->seqno.pdu_hdr_ack,
907 QETH_PDU_HEADER_SEQ_NO(iob->data),
908 QETH_SEQ_NO_LENGTH);
909 qeth_release_buffer(channel, iob);
910 }
911
qeth_setup_channel(struct qeth_channel * channel)912 static int qeth_setup_channel(struct qeth_channel *channel)
913 {
914 int cnt;
915
916 QETH_DBF_TEXT(SETUP, 2, "setupch");
917 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
918 channel->iob[cnt].data =
919 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
920 if (channel->iob[cnt].data == NULL)
921 break;
922 channel->iob[cnt].state = BUF_STATE_FREE;
923 channel->iob[cnt].channel = channel;
924 channel->iob[cnt].callback = qeth_send_control_data_cb;
925 channel->iob[cnt].rc = 0;
926 }
927 if (cnt < QETH_CMD_BUFFER_NO) {
928 while (cnt-- > 0)
929 kfree(channel->iob[cnt].data);
930 return -ENOMEM;
931 }
932 channel->buf_no = 0;
933 channel->io_buf_no = 0;
934 atomic_set(&channel->irq_pending, 0);
935 spin_lock_init(&channel->iob_lock);
936
937 init_waitqueue_head(&channel->wait_q);
938 return 0;
939 }
940
qeth_set_thread_start_bit(struct qeth_card * card,unsigned long thread)941 static int qeth_set_thread_start_bit(struct qeth_card *card,
942 unsigned long thread)
943 {
944 unsigned long flags;
945
946 spin_lock_irqsave(&card->thread_mask_lock, flags);
947 if (!(card->thread_allowed_mask & thread) ||
948 (card->thread_start_mask & thread)) {
949 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
950 return -EPERM;
951 }
952 card->thread_start_mask |= thread;
953 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
954 return 0;
955 }
956
qeth_clear_thread_start_bit(struct qeth_card * card,unsigned long thread)957 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
958 {
959 unsigned long flags;
960
961 spin_lock_irqsave(&card->thread_mask_lock, flags);
962 card->thread_start_mask &= ~thread;
963 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
964 wake_up(&card->wait_q);
965 }
966 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
967
qeth_clear_thread_running_bit(struct qeth_card * card,unsigned long thread)968 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
969 {
970 unsigned long flags;
971
972 spin_lock_irqsave(&card->thread_mask_lock, flags);
973 card->thread_running_mask &= ~thread;
974 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
975 wake_up_all(&card->wait_q);
976 }
977 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
978
__qeth_do_run_thread(struct qeth_card * card,unsigned long thread)979 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
980 {
981 unsigned long flags;
982 int rc = 0;
983
984 spin_lock_irqsave(&card->thread_mask_lock, flags);
985 if (card->thread_start_mask & thread) {
986 if ((card->thread_allowed_mask & thread) &&
987 !(card->thread_running_mask & thread)) {
988 rc = 1;
989 card->thread_start_mask &= ~thread;
990 card->thread_running_mask |= thread;
991 } else
992 rc = -EPERM;
993 }
994 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
995 return rc;
996 }
997
qeth_do_run_thread(struct qeth_card * card,unsigned long thread)998 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
999 {
1000 int rc = 0;
1001
1002 wait_event(card->wait_q,
1003 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1004 return rc;
1005 }
1006 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
1007
qeth_schedule_recovery(struct qeth_card * card)1008 void qeth_schedule_recovery(struct qeth_card *card)
1009 {
1010 QETH_CARD_TEXT(card, 2, "startrec");
1011 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
1012 schedule_work(&card->kernel_thread_starter);
1013 }
1014 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
1015
qeth_get_problem(struct ccw_device * cdev,struct irb * irb)1016 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1017 {
1018 int dstat, cstat;
1019 char *sense;
1020 struct qeth_card *card;
1021
1022 sense = (char *) irb->ecw;
1023 cstat = irb->scsw.cmd.cstat;
1024 dstat = irb->scsw.cmd.dstat;
1025 card = CARD_FROM_CDEV(cdev);
1026
1027 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1028 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1029 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1030 QETH_CARD_TEXT(card, 2, "CGENCHK");
1031 dev_warn(&cdev->dev, "The qeth device driver "
1032 "failed to recover an error on the device\n");
1033 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1034 dev_name(&cdev->dev), dstat, cstat);
1035 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1036 16, 1, irb, 64, 1);
1037 return 1;
1038 }
1039
1040 if (dstat & DEV_STAT_UNIT_CHECK) {
1041 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1042 SENSE_RESETTING_EVENT_FLAG) {
1043 QETH_CARD_TEXT(card, 2, "REVIND");
1044 return 1;
1045 }
1046 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1047 SENSE_COMMAND_REJECT_FLAG) {
1048 QETH_CARD_TEXT(card, 2, "CMDREJi");
1049 return 1;
1050 }
1051 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1052 QETH_CARD_TEXT(card, 2, "AFFE");
1053 return 1;
1054 }
1055 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1056 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1057 return 0;
1058 }
1059 QETH_CARD_TEXT(card, 2, "DGENCHK");
1060 return 1;
1061 }
1062 return 0;
1063 }
1064
__qeth_check_irb_error(struct ccw_device * cdev,unsigned long intparm,struct irb * irb)1065 static long __qeth_check_irb_error(struct ccw_device *cdev,
1066 unsigned long intparm, struct irb *irb)
1067 {
1068 struct qeth_card *card;
1069
1070 card = CARD_FROM_CDEV(cdev);
1071
1072 if (!card || !IS_ERR(irb))
1073 return 0;
1074
1075 switch (PTR_ERR(irb)) {
1076 case -EIO:
1077 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1078 dev_name(&cdev->dev));
1079 QETH_CARD_TEXT(card, 2, "ckirberr");
1080 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1081 break;
1082 case -ETIMEDOUT:
1083 dev_warn(&cdev->dev, "A hardware operation timed out"
1084 " on the device\n");
1085 QETH_CARD_TEXT(card, 2, "ckirberr");
1086 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1087 if (intparm == QETH_RCD_PARM) {
1088 if (card->data.ccwdev == cdev) {
1089 card->data.state = CH_STATE_DOWN;
1090 wake_up(&card->wait_q);
1091 }
1092 }
1093 break;
1094 default:
1095 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1096 dev_name(&cdev->dev), PTR_ERR(irb));
1097 QETH_CARD_TEXT(card, 2, "ckirberr");
1098 QETH_CARD_TEXT(card, 2, " rc???");
1099 }
1100 return PTR_ERR(irb);
1101 }
1102
qeth_irq(struct ccw_device * cdev,unsigned long intparm,struct irb * irb)1103 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1104 struct irb *irb)
1105 {
1106 int rc;
1107 int cstat, dstat;
1108 struct qeth_cmd_buffer *buffer;
1109 struct qeth_channel *channel;
1110 struct qeth_card *card;
1111 struct qeth_cmd_buffer *iob;
1112 __u8 index;
1113
1114 if (__qeth_check_irb_error(cdev, intparm, irb))
1115 return;
1116 cstat = irb->scsw.cmd.cstat;
1117 dstat = irb->scsw.cmd.dstat;
1118
1119 card = CARD_FROM_CDEV(cdev);
1120 if (!card)
1121 return;
1122
1123 QETH_CARD_TEXT(card, 5, "irq");
1124
1125 if (card->read.ccwdev == cdev) {
1126 channel = &card->read;
1127 QETH_CARD_TEXT(card, 5, "read");
1128 } else if (card->write.ccwdev == cdev) {
1129 channel = &card->write;
1130 QETH_CARD_TEXT(card, 5, "write");
1131 } else {
1132 channel = &card->data;
1133 QETH_CARD_TEXT(card, 5, "data");
1134 }
1135 atomic_set(&channel->irq_pending, 0);
1136
1137 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1138 channel->state = CH_STATE_STOPPED;
1139
1140 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1141 channel->state = CH_STATE_HALTED;
1142
1143 /*let's wake up immediately on data channel*/
1144 if ((channel == &card->data) && (intparm != 0) &&
1145 (intparm != QETH_RCD_PARM))
1146 goto out;
1147
1148 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1149 QETH_CARD_TEXT(card, 6, "clrchpar");
1150 /* we don't have to handle this further */
1151 intparm = 0;
1152 }
1153 if (intparm == QETH_HALT_CHANNEL_PARM) {
1154 QETH_CARD_TEXT(card, 6, "hltchpar");
1155 /* we don't have to handle this further */
1156 intparm = 0;
1157 }
1158 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1159 (dstat & DEV_STAT_UNIT_CHECK) ||
1160 (cstat)) {
1161 if (irb->esw.esw0.erw.cons) {
1162 dev_warn(&channel->ccwdev->dev,
1163 "The qeth device driver failed to recover "
1164 "an error on the device\n");
1165 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1166 "0x%X dstat 0x%X\n",
1167 dev_name(&channel->ccwdev->dev), cstat, dstat);
1168 print_hex_dump(KERN_WARNING, "qeth: irb ",
1169 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1170 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1171 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1172 }
1173 if (intparm == QETH_RCD_PARM) {
1174 channel->state = CH_STATE_DOWN;
1175 goto out;
1176 }
1177 rc = qeth_get_problem(cdev, irb);
1178 if (rc) {
1179 card->read_or_write_problem = 1;
1180 qeth_clear_ipacmd_list(card);
1181 qeth_schedule_recovery(card);
1182 goto out;
1183 }
1184 }
1185
1186 if (intparm == QETH_RCD_PARM) {
1187 channel->state = CH_STATE_RCD_DONE;
1188 goto out;
1189 }
1190 if (intparm) {
1191 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1192 buffer->state = BUF_STATE_PROCESSED;
1193 }
1194 if (channel == &card->data)
1195 return;
1196 if (channel == &card->read &&
1197 channel->state == CH_STATE_UP)
1198 __qeth_issue_next_read(card);
1199
1200 iob = channel->iob;
1201 index = channel->buf_no;
1202 while (iob[index].state == BUF_STATE_PROCESSED) {
1203 if (iob[index].callback != NULL)
1204 iob[index].callback(channel, iob + index);
1205
1206 index = (index + 1) % QETH_CMD_BUFFER_NO;
1207 }
1208 channel->buf_no = index;
1209 out:
1210 wake_up(&card->wait_q);
1211 return;
1212 }
1213
qeth_notify_skbs(struct qeth_qdio_out_q * q,struct qeth_qdio_out_buffer * buf,enum iucv_tx_notify notification)1214 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1215 struct qeth_qdio_out_buffer *buf,
1216 enum iucv_tx_notify notification)
1217 {
1218 struct sk_buff *skb;
1219
1220 if (skb_queue_empty(&buf->skb_list))
1221 goto out;
1222 skb = skb_peek(&buf->skb_list);
1223 while (skb) {
1224 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1225 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1226 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1227 if (skb->sk) {
1228 struct iucv_sock *iucv = iucv_sk(skb->sk);
1229 iucv->sk_txnotify(skb, notification);
1230 }
1231 }
1232 if (skb_queue_is_last(&buf->skb_list, skb))
1233 skb = NULL;
1234 else
1235 skb = skb_queue_next(&buf->skb_list, skb);
1236 }
1237 out:
1238 return;
1239 }
1240
qeth_release_skbs(struct qeth_qdio_out_buffer * buf)1241 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1242 {
1243 struct sk_buff *skb;
1244 struct iucv_sock *iucv;
1245 int notify_general_error = 0;
1246
1247 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1248 notify_general_error = 1;
1249
1250 /* release may never happen from within CQ tasklet scope */
1251 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1252
1253 skb = skb_dequeue(&buf->skb_list);
1254 while (skb) {
1255 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1256 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1257 if (notify_general_error &&
1258 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1259 if (skb->sk) {
1260 iucv = iucv_sk(skb->sk);
1261 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1262 }
1263 }
1264 refcount_dec(&skb->users);
1265 dev_kfree_skb_any(skb);
1266 skb = skb_dequeue(&buf->skb_list);
1267 }
1268 }
1269
qeth_clear_output_buffer(struct qeth_qdio_out_q * queue,struct qeth_qdio_out_buffer * buf,enum qeth_qdio_buffer_states newbufstate)1270 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1271 struct qeth_qdio_out_buffer *buf,
1272 enum qeth_qdio_buffer_states newbufstate)
1273 {
1274 int i;
1275
1276 /* is PCI flag set on buffer? */
1277 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1278 atomic_dec(&queue->set_pci_flags_count);
1279
1280 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1281 qeth_release_skbs(buf);
1282 }
1283 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1284 if (buf->buffer->element[i].addr && buf->is_header[i])
1285 kmem_cache_free(qeth_core_header_cache,
1286 buf->buffer->element[i].addr);
1287 buf->is_header[i] = 0;
1288 buf->buffer->element[i].length = 0;
1289 buf->buffer->element[i].addr = NULL;
1290 buf->buffer->element[i].eflags = 0;
1291 buf->buffer->element[i].sflags = 0;
1292 }
1293 buf->buffer->element[15].eflags = 0;
1294 buf->buffer->element[15].sflags = 0;
1295 buf->next_element_to_fill = 0;
1296 atomic_set(&buf->state, newbufstate);
1297 }
1298
qeth_clear_outq_buffers(struct qeth_qdio_out_q * q,int free)1299 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1300 {
1301 int j;
1302
1303 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1304 if (!q->bufs[j])
1305 continue;
1306 qeth_cleanup_handled_pending(q, j, 1);
1307 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1308 if (free) {
1309 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1310 q->bufs[j] = NULL;
1311 }
1312 }
1313 }
1314
qeth_clear_qdio_buffers(struct qeth_card * card)1315 void qeth_clear_qdio_buffers(struct qeth_card *card)
1316 {
1317 int i;
1318
1319 QETH_CARD_TEXT(card, 2, "clearqdbf");
1320 /* clear outbound buffers to free skbs */
1321 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1322 if (card->qdio.out_qs[i]) {
1323 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1324 }
1325 }
1326 }
1327 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1328
qeth_free_buffer_pool(struct qeth_card * card)1329 static void qeth_free_buffer_pool(struct qeth_card *card)
1330 {
1331 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1332 int i = 0;
1333 list_for_each_entry_safe(pool_entry, tmp,
1334 &card->qdio.init_pool.entry_list, init_list){
1335 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1336 free_page((unsigned long)pool_entry->elements[i]);
1337 list_del(&pool_entry->init_list);
1338 kfree(pool_entry);
1339 }
1340 }
1341
qeth_clean_channel(struct qeth_channel * channel)1342 static void qeth_clean_channel(struct qeth_channel *channel)
1343 {
1344 int cnt;
1345
1346 QETH_DBF_TEXT(SETUP, 2, "freech");
1347 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1348 kfree(channel->iob[cnt].data);
1349 }
1350
qeth_set_single_write_queues(struct qeth_card * card)1351 static void qeth_set_single_write_queues(struct qeth_card *card)
1352 {
1353 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1354 (card->qdio.no_out_queues == 4))
1355 qeth_free_qdio_buffers(card);
1356
1357 card->qdio.no_out_queues = 1;
1358 if (card->qdio.default_out_queue != 0)
1359 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1360
1361 card->qdio.default_out_queue = 0;
1362 }
1363
qeth_set_multiple_write_queues(struct qeth_card * card)1364 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1365 {
1366 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1367 (card->qdio.no_out_queues == 1)) {
1368 qeth_free_qdio_buffers(card);
1369 card->qdio.default_out_queue = 2;
1370 }
1371 card->qdio.no_out_queues = 4;
1372 }
1373
qeth_update_from_chp_desc(struct qeth_card * card)1374 static void qeth_update_from_chp_desc(struct qeth_card *card)
1375 {
1376 struct ccw_device *ccwdev;
1377 struct channel_path_desc *chp_dsc;
1378
1379 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1380
1381 ccwdev = card->data.ccwdev;
1382 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1383 if (!chp_dsc)
1384 goto out;
1385
1386 card->info.func_level = 0x4100 + chp_dsc->desc;
1387 if (card->info.type == QETH_CARD_TYPE_IQD)
1388 goto out;
1389
1390 /* CHPP field bit 6 == 1 -> single queue */
1391 if ((chp_dsc->chpp & 0x02) == 0x02)
1392 qeth_set_single_write_queues(card);
1393 else
1394 qeth_set_multiple_write_queues(card);
1395 out:
1396 kfree(chp_dsc);
1397 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1398 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1399 }
1400
qeth_init_qdio_info(struct qeth_card * card)1401 static void qeth_init_qdio_info(struct qeth_card *card)
1402 {
1403 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1404 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1405 /* inbound */
1406 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1407 if (card->info.type == QETH_CARD_TYPE_IQD)
1408 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1409 else
1410 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1411 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1412 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1413 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1414 }
1415
qeth_set_intial_options(struct qeth_card * card)1416 static void qeth_set_intial_options(struct qeth_card *card)
1417 {
1418 card->options.route4.type = NO_ROUTER;
1419 card->options.route6.type = NO_ROUTER;
1420 card->options.fake_broadcast = 0;
1421 card->options.performance_stats = 0;
1422 card->options.rx_sg_cb = QETH_RX_SG_CB;
1423 card->options.isolation = ISOLATION_MODE_NONE;
1424 card->options.cq = QETH_CQ_DISABLED;
1425 }
1426
qeth_do_start_thread(struct qeth_card * card,unsigned long thread)1427 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1428 {
1429 unsigned long flags;
1430 int rc = 0;
1431
1432 spin_lock_irqsave(&card->thread_mask_lock, flags);
1433 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1434 (u8) card->thread_start_mask,
1435 (u8) card->thread_allowed_mask,
1436 (u8) card->thread_running_mask);
1437 rc = (card->thread_start_mask & thread);
1438 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1439 return rc;
1440 }
1441
qeth_start_kernel_thread(struct work_struct * work)1442 static void qeth_start_kernel_thread(struct work_struct *work)
1443 {
1444 struct task_struct *ts;
1445 struct qeth_card *card = container_of(work, struct qeth_card,
1446 kernel_thread_starter);
1447 QETH_CARD_TEXT(card , 2, "strthrd");
1448
1449 if (card->read.state != CH_STATE_UP &&
1450 card->write.state != CH_STATE_UP)
1451 return;
1452 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1453 ts = kthread_run(card->discipline->recover, (void *)card,
1454 "qeth_recover");
1455 if (IS_ERR(ts)) {
1456 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1457 qeth_clear_thread_running_bit(card,
1458 QETH_RECOVER_THREAD);
1459 }
1460 }
1461 }
1462
1463 static void qeth_buffer_reclaim_work(struct work_struct *);
qeth_setup_card(struct qeth_card * card)1464 static int qeth_setup_card(struct qeth_card *card)
1465 {
1466
1467 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1468 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1469
1470 card->read.state = CH_STATE_DOWN;
1471 card->write.state = CH_STATE_DOWN;
1472 card->data.state = CH_STATE_DOWN;
1473 card->state = CARD_STATE_DOWN;
1474 card->lan_online = 0;
1475 card->read_or_write_problem = 0;
1476 card->dev = NULL;
1477 spin_lock_init(&card->vlanlock);
1478 spin_lock_init(&card->mclock);
1479 spin_lock_init(&card->lock);
1480 spin_lock_init(&card->ip_lock);
1481 spin_lock_init(&card->thread_mask_lock);
1482 mutex_init(&card->conf_mutex);
1483 mutex_init(&card->discipline_mutex);
1484 card->thread_start_mask = 0;
1485 card->thread_allowed_mask = 0;
1486 card->thread_running_mask = 0;
1487 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1488 INIT_LIST_HEAD(&card->cmd_waiter_list);
1489 init_waitqueue_head(&card->wait_q);
1490 /* initial options */
1491 qeth_set_intial_options(card);
1492 /* IP address takeover */
1493 INIT_LIST_HEAD(&card->ipato.entries);
1494 card->ipato.enabled = false;
1495 card->ipato.invert4 = false;
1496 card->ipato.invert6 = false;
1497 /* init QDIO stuff */
1498 qeth_init_qdio_info(card);
1499 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1500 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1501 return 0;
1502 }
1503
qeth_core_sl_print(struct seq_file * m,struct service_level * slr)1504 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1505 {
1506 struct qeth_card *card = container_of(slr, struct qeth_card,
1507 qeth_service_level);
1508 if (card->info.mcl_level[0])
1509 seq_printf(m, "qeth: %s firmware level %s\n",
1510 CARD_BUS_ID(card), card->info.mcl_level);
1511 }
1512
qeth_alloc_card(void)1513 static struct qeth_card *qeth_alloc_card(void)
1514 {
1515 struct qeth_card *card;
1516
1517 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1518 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1519 if (!card)
1520 goto out;
1521 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1522 if (qeth_setup_channel(&card->read))
1523 goto out_ip;
1524 if (qeth_setup_channel(&card->write))
1525 goto out_channel;
1526 card->options.layer2 = -1;
1527 card->qeth_service_level.seq_print = qeth_core_sl_print;
1528 register_service_level(&card->qeth_service_level);
1529 return card;
1530
1531 out_channel:
1532 qeth_clean_channel(&card->read);
1533 out_ip:
1534 kfree(card);
1535 out:
1536 return NULL;
1537 }
1538
qeth_determine_card_type(struct qeth_card * card)1539 static int qeth_determine_card_type(struct qeth_card *card)
1540 {
1541 int i = 0;
1542
1543 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1544
1545 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1546 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1547 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1548 if ((CARD_RDEV(card)->id.dev_type ==
1549 known_devices[i][QETH_DEV_TYPE_IND]) &&
1550 (CARD_RDEV(card)->id.dev_model ==
1551 known_devices[i][QETH_DEV_MODEL_IND])) {
1552 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1553 card->qdio.no_out_queues =
1554 known_devices[i][QETH_QUEUE_NO_IND];
1555 card->qdio.no_in_queues = 1;
1556 card->info.is_multicast_different =
1557 known_devices[i][QETH_MULTICAST_IND];
1558 qeth_update_from_chp_desc(card);
1559 return 0;
1560 }
1561 i++;
1562 }
1563 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1564 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1565 "unknown type\n");
1566 return -ENOENT;
1567 }
1568
qeth_clear_channel(struct qeth_channel * channel)1569 static int qeth_clear_channel(struct qeth_channel *channel)
1570 {
1571 unsigned long flags;
1572 struct qeth_card *card;
1573 int rc;
1574
1575 card = CARD_FROM_CDEV(channel->ccwdev);
1576 QETH_CARD_TEXT(card, 3, "clearch");
1577 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1578 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1579 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1580
1581 if (rc)
1582 return rc;
1583 rc = wait_event_interruptible_timeout(card->wait_q,
1584 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1585 if (rc == -ERESTARTSYS)
1586 return rc;
1587 if (channel->state != CH_STATE_STOPPED)
1588 return -ETIME;
1589 channel->state = CH_STATE_DOWN;
1590 return 0;
1591 }
1592
qeth_halt_channel(struct qeth_channel * channel)1593 static int qeth_halt_channel(struct qeth_channel *channel)
1594 {
1595 unsigned long flags;
1596 struct qeth_card *card;
1597 int rc;
1598
1599 card = CARD_FROM_CDEV(channel->ccwdev);
1600 QETH_CARD_TEXT(card, 3, "haltch");
1601 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1602 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1603 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1604
1605 if (rc)
1606 return rc;
1607 rc = wait_event_interruptible_timeout(card->wait_q,
1608 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1609 if (rc == -ERESTARTSYS)
1610 return rc;
1611 if (channel->state != CH_STATE_HALTED)
1612 return -ETIME;
1613 return 0;
1614 }
1615
qeth_halt_channels(struct qeth_card * card)1616 static int qeth_halt_channels(struct qeth_card *card)
1617 {
1618 int rc1 = 0, rc2 = 0, rc3 = 0;
1619
1620 QETH_CARD_TEXT(card, 3, "haltchs");
1621 rc1 = qeth_halt_channel(&card->read);
1622 rc2 = qeth_halt_channel(&card->write);
1623 rc3 = qeth_halt_channel(&card->data);
1624 if (rc1)
1625 return rc1;
1626 if (rc2)
1627 return rc2;
1628 return rc3;
1629 }
1630
qeth_clear_channels(struct qeth_card * card)1631 static int qeth_clear_channels(struct qeth_card *card)
1632 {
1633 int rc1 = 0, rc2 = 0, rc3 = 0;
1634
1635 QETH_CARD_TEXT(card, 3, "clearchs");
1636 rc1 = qeth_clear_channel(&card->read);
1637 rc2 = qeth_clear_channel(&card->write);
1638 rc3 = qeth_clear_channel(&card->data);
1639 if (rc1)
1640 return rc1;
1641 if (rc2)
1642 return rc2;
1643 return rc3;
1644 }
1645
qeth_clear_halt_card(struct qeth_card * card,int halt)1646 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1647 {
1648 int rc = 0;
1649
1650 QETH_CARD_TEXT(card, 3, "clhacrd");
1651
1652 if (halt)
1653 rc = qeth_halt_channels(card);
1654 if (rc)
1655 return rc;
1656 return qeth_clear_channels(card);
1657 }
1658
qeth_qdio_clear_card(struct qeth_card * card,int use_halt)1659 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1660 {
1661 int rc = 0;
1662
1663 QETH_CARD_TEXT(card, 3, "qdioclr");
1664 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1665 QETH_QDIO_CLEANING)) {
1666 case QETH_QDIO_ESTABLISHED:
1667 if (card->info.type == QETH_CARD_TYPE_IQD)
1668 rc = qdio_shutdown(CARD_DDEV(card),
1669 QDIO_FLAG_CLEANUP_USING_HALT);
1670 else
1671 rc = qdio_shutdown(CARD_DDEV(card),
1672 QDIO_FLAG_CLEANUP_USING_CLEAR);
1673 if (rc)
1674 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1675 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1676 break;
1677 case QETH_QDIO_CLEANING:
1678 return rc;
1679 default:
1680 break;
1681 }
1682 rc = qeth_clear_halt_card(card, use_halt);
1683 if (rc)
1684 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1685 card->state = CARD_STATE_DOWN;
1686 return rc;
1687 }
1688 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1689
qeth_read_conf_data(struct qeth_card * card,void ** buffer,int * length)1690 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1691 int *length)
1692 {
1693 struct ciw *ciw;
1694 char *rcd_buf;
1695 int ret;
1696 struct qeth_channel *channel = &card->data;
1697 unsigned long flags;
1698
1699 /*
1700 * scan for RCD command in extended SenseID data
1701 */
1702 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1703 if (!ciw || ciw->cmd == 0)
1704 return -EOPNOTSUPP;
1705 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1706 if (!rcd_buf)
1707 return -ENOMEM;
1708
1709 channel->ccw.cmd_code = ciw->cmd;
1710 channel->ccw.cda = (__u32) __pa(rcd_buf);
1711 channel->ccw.count = ciw->count;
1712 channel->ccw.flags = CCW_FLAG_SLI;
1713 channel->state = CH_STATE_RCD;
1714 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1715 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1716 QETH_RCD_PARM, LPM_ANYPATH, 0,
1717 QETH_RCD_TIMEOUT);
1718 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1719 if (!ret)
1720 wait_event(card->wait_q,
1721 (channel->state == CH_STATE_RCD_DONE ||
1722 channel->state == CH_STATE_DOWN));
1723 if (channel->state == CH_STATE_DOWN)
1724 ret = -EIO;
1725 else
1726 channel->state = CH_STATE_DOWN;
1727 if (ret) {
1728 kfree(rcd_buf);
1729 *buffer = NULL;
1730 *length = 0;
1731 } else {
1732 *length = ciw->count;
1733 *buffer = rcd_buf;
1734 }
1735 return ret;
1736 }
1737
qeth_configure_unitaddr(struct qeth_card * card,char * prcd)1738 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1739 {
1740 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1741 card->info.chpid = prcd[30];
1742 card->info.unit_addr2 = prcd[31];
1743 card->info.cula = prcd[63];
1744 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1745 (prcd[0x11] == _ascebc['M']));
1746 }
1747
1748 /* Determine whether the device requires a specific layer discipline */
qeth_enforce_discipline(struct qeth_card * card)1749 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1750 {
1751 if (card->info.type == QETH_CARD_TYPE_OSM ||
1752 card->info.type == QETH_CARD_TYPE_OSN) {
1753 QETH_DBF_TEXT(SETUP, 3, "force l2");
1754 return QETH_DISCIPLINE_LAYER2;
1755 }
1756
1757 /* virtual HiperSocket is L3 only: */
1758 if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) {
1759 QETH_DBF_TEXT(SETUP, 3, "force l3");
1760 return QETH_DISCIPLINE_LAYER3;
1761 }
1762
1763 QETH_DBF_TEXT(SETUP, 3, "force no");
1764 return QETH_DISCIPLINE_UNDETERMINED;
1765 }
1766
qeth_configure_blkt_default(struct qeth_card * card,char * prcd)1767 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1768 {
1769 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1770
1771 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1772 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1773 card->info.blkt.time_total = 0;
1774 card->info.blkt.inter_packet = 0;
1775 card->info.blkt.inter_packet_jumbo = 0;
1776 } else {
1777 card->info.blkt.time_total = 250;
1778 card->info.blkt.inter_packet = 5;
1779 card->info.blkt.inter_packet_jumbo = 15;
1780 }
1781 }
1782
qeth_init_tokens(struct qeth_card * card)1783 static void qeth_init_tokens(struct qeth_card *card)
1784 {
1785 card->token.issuer_rm_w = 0x00010103UL;
1786 card->token.cm_filter_w = 0x00010108UL;
1787 card->token.cm_connection_w = 0x0001010aUL;
1788 card->token.ulp_filter_w = 0x0001010bUL;
1789 card->token.ulp_connection_w = 0x0001010dUL;
1790 }
1791
qeth_init_func_level(struct qeth_card * card)1792 static void qeth_init_func_level(struct qeth_card *card)
1793 {
1794 switch (card->info.type) {
1795 case QETH_CARD_TYPE_IQD:
1796 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1797 break;
1798 case QETH_CARD_TYPE_OSD:
1799 case QETH_CARD_TYPE_OSN:
1800 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1801 break;
1802 default:
1803 break;
1804 }
1805 }
1806
qeth_idx_activate_get_answer(struct qeth_channel * channel,void (* idx_reply_cb)(struct qeth_channel *,struct qeth_cmd_buffer *))1807 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1808 void (*idx_reply_cb)(struct qeth_channel *,
1809 struct qeth_cmd_buffer *))
1810 {
1811 struct qeth_cmd_buffer *iob;
1812 unsigned long flags;
1813 int rc;
1814 struct qeth_card *card;
1815
1816 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1817 card = CARD_FROM_CDEV(channel->ccwdev);
1818 iob = qeth_get_buffer(channel);
1819 if (!iob)
1820 return -ENOMEM;
1821 iob->callback = idx_reply_cb;
1822 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1823 channel->ccw.count = QETH_BUFSIZE;
1824 channel->ccw.cda = (__u32) __pa(iob->data);
1825
1826 wait_event(card->wait_q,
1827 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1828 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1829 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1830 rc = ccw_device_start(channel->ccwdev,
1831 &channel->ccw, (addr_t) iob, 0, 0);
1832 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1833
1834 if (rc) {
1835 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1836 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1837 atomic_set(&channel->irq_pending, 0);
1838 wake_up(&card->wait_q);
1839 return rc;
1840 }
1841 rc = wait_event_interruptible_timeout(card->wait_q,
1842 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1843 if (rc == -ERESTARTSYS)
1844 return rc;
1845 if (channel->state != CH_STATE_UP) {
1846 rc = -ETIME;
1847 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1848 qeth_clear_cmd_buffers(channel);
1849 } else
1850 rc = 0;
1851 return rc;
1852 }
1853
qeth_idx_activate_channel(struct qeth_channel * channel,void (* idx_reply_cb)(struct qeth_channel *,struct qeth_cmd_buffer *))1854 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1855 void (*idx_reply_cb)(struct qeth_channel *,
1856 struct qeth_cmd_buffer *))
1857 {
1858 struct qeth_card *card;
1859 struct qeth_cmd_buffer *iob;
1860 unsigned long flags;
1861 __u16 temp;
1862 __u8 tmp;
1863 int rc;
1864 struct ccw_dev_id temp_devid;
1865
1866 card = CARD_FROM_CDEV(channel->ccwdev);
1867
1868 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1869
1870 iob = qeth_get_buffer(channel);
1871 if (!iob)
1872 return -ENOMEM;
1873 iob->callback = idx_reply_cb;
1874 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1875 channel->ccw.count = IDX_ACTIVATE_SIZE;
1876 channel->ccw.cda = (__u32) __pa(iob->data);
1877 if (channel == &card->write) {
1878 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1879 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1880 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1881 card->seqno.trans_hdr++;
1882 } else {
1883 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1884 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1885 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1886 }
1887 tmp = ((__u8)card->info.portno) | 0x80;
1888 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1889 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1890 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1891 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1892 &card->info.func_level, sizeof(__u16));
1893 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1894 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1895 temp = (card->info.cula << 8) + card->info.unit_addr2;
1896 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1897
1898 wait_event(card->wait_q,
1899 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1900 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1901 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1902 rc = ccw_device_start(channel->ccwdev,
1903 &channel->ccw, (addr_t) iob, 0, 0);
1904 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1905
1906 if (rc) {
1907 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1908 rc);
1909 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1910 atomic_set(&channel->irq_pending, 0);
1911 wake_up(&card->wait_q);
1912 return rc;
1913 }
1914 rc = wait_event_interruptible_timeout(card->wait_q,
1915 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1916 if (rc == -ERESTARTSYS)
1917 return rc;
1918 if (channel->state != CH_STATE_ACTIVATING) {
1919 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1920 " failed to recover an error on the device\n");
1921 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1922 dev_name(&channel->ccwdev->dev));
1923 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1924 qeth_clear_cmd_buffers(channel);
1925 return -ETIME;
1926 }
1927 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1928 }
1929
qeth_peer_func_level(int level)1930 static int qeth_peer_func_level(int level)
1931 {
1932 if ((level & 0xff) == 8)
1933 return (level & 0xff) + 0x400;
1934 if (((level >> 8) & 3) == 1)
1935 return (level & 0xff) + 0x200;
1936 return level;
1937 }
1938
qeth_idx_write_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)1939 static void qeth_idx_write_cb(struct qeth_channel *channel,
1940 struct qeth_cmd_buffer *iob)
1941 {
1942 struct qeth_card *card;
1943 __u16 temp;
1944
1945 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1946
1947 if (channel->state == CH_STATE_DOWN) {
1948 channel->state = CH_STATE_ACTIVATING;
1949 goto out;
1950 }
1951 card = CARD_FROM_CDEV(channel->ccwdev);
1952
1953 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1954 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1955 dev_err(&card->write.ccwdev->dev,
1956 "The adapter is used exclusively by another "
1957 "host\n");
1958 else
1959 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1960 " negative reply\n",
1961 dev_name(&card->write.ccwdev->dev));
1962 goto out;
1963 }
1964 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1965 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1966 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1967 "function level mismatch (sent: 0x%x, received: "
1968 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1969 card->info.func_level, temp);
1970 goto out;
1971 }
1972 channel->state = CH_STATE_UP;
1973 out:
1974 qeth_release_buffer(channel, iob);
1975 }
1976
qeth_idx_read_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)1977 static void qeth_idx_read_cb(struct qeth_channel *channel,
1978 struct qeth_cmd_buffer *iob)
1979 {
1980 struct qeth_card *card;
1981 __u16 temp;
1982
1983 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1984 if (channel->state == CH_STATE_DOWN) {
1985 channel->state = CH_STATE_ACTIVATING;
1986 goto out;
1987 }
1988
1989 card = CARD_FROM_CDEV(channel->ccwdev);
1990 if (qeth_check_idx_response(card, iob->data))
1991 goto out;
1992
1993 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1994 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1995 case QETH_IDX_ACT_ERR_EXCL:
1996 dev_err(&card->write.ccwdev->dev,
1997 "The adapter is used exclusively by another "
1998 "host\n");
1999 break;
2000 case QETH_IDX_ACT_ERR_AUTH:
2001 case QETH_IDX_ACT_ERR_AUTH_USER:
2002 dev_err(&card->read.ccwdev->dev,
2003 "Setting the device online failed because of "
2004 "insufficient authorization\n");
2005 break;
2006 default:
2007 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
2008 " negative reply\n",
2009 dev_name(&card->read.ccwdev->dev));
2010 }
2011 QETH_CARD_TEXT_(card, 2, "idxread%c",
2012 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2013 goto out;
2014 }
2015
2016 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2017 if (temp != qeth_peer_func_level(card->info.func_level)) {
2018 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
2019 "level mismatch (sent: 0x%x, received: 0x%x)\n",
2020 dev_name(&card->read.ccwdev->dev),
2021 card->info.func_level, temp);
2022 goto out;
2023 }
2024 memcpy(&card->token.issuer_rm_r,
2025 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2026 QETH_MPC_TOKEN_LENGTH);
2027 memcpy(&card->info.mcl_level[0],
2028 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2029 channel->state = CH_STATE_UP;
2030 out:
2031 qeth_release_buffer(channel, iob);
2032 }
2033
qeth_prepare_control_data(struct qeth_card * card,int len,struct qeth_cmd_buffer * iob)2034 void qeth_prepare_control_data(struct qeth_card *card, int len,
2035 struct qeth_cmd_buffer *iob)
2036 {
2037 qeth_setup_ccw(&card->write, iob->data, len);
2038 iob->callback = qeth_release_buffer;
2039
2040 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2041 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2042 card->seqno.trans_hdr++;
2043 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2044 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2045 card->seqno.pdu_hdr++;
2046 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2047 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2048 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2049 }
2050 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2051
2052 /**
2053 * qeth_send_control_data() - send control command to the card
2054 * @card: qeth_card structure pointer
2055 * @len: size of the command buffer
2056 * @iob: qeth_cmd_buffer pointer
2057 * @reply_cb: callback function pointer
2058 * @cb_card: pointer to the qeth_card structure
2059 * @cb_reply: pointer to the qeth_reply structure
2060 * @cb_cmd: pointer to the original iob for non-IPA
2061 * commands, or to the qeth_ipa_cmd structure
2062 * for the IPA commands.
2063 * @reply_param: private pointer passed to the callback
2064 *
2065 * Returns the value of the `return_code' field of the response
2066 * block returned from the hardware, or other error indication.
2067 * Value of zero indicates successful execution of the command.
2068 *
2069 * Callback function gets called one or more times, with cb_cmd
2070 * pointing to the response returned by the hardware. Callback
2071 * function must return non-zero if more reply blocks are expected,
2072 * and zero if the last or only reply block is received. Callback
2073 * function can get the value of the reply_param pointer from the
2074 * field 'param' of the structure qeth_reply.
2075 */
2076
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)2077 int qeth_send_control_data(struct qeth_card *card, int len,
2078 struct qeth_cmd_buffer *iob,
2079 int (*reply_cb)(struct qeth_card *cb_card,
2080 struct qeth_reply *cb_reply,
2081 unsigned long cb_cmd),
2082 void *reply_param)
2083 {
2084 int rc;
2085 unsigned long flags;
2086 struct qeth_reply *reply = NULL;
2087 unsigned long timeout, event_timeout;
2088 struct qeth_ipa_cmd *cmd = NULL;
2089
2090 QETH_CARD_TEXT(card, 2, "sendctl");
2091
2092 if (card->read_or_write_problem) {
2093 qeth_release_buffer(iob->channel, iob);
2094 return -EIO;
2095 }
2096 reply = qeth_alloc_reply(card);
2097 if (!reply) {
2098 return -ENOMEM;
2099 }
2100 reply->callback = reply_cb;
2101 reply->param = reply_param;
2102
2103 init_waitqueue_head(&reply->wait_q);
2104 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2105
2106 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2107
2108 if (IS_IPA(iob->data)) {
2109 cmd = __ipa_cmd(iob);
2110 cmd->hdr.seqno = card->seqno.ipa++;
2111 reply->seqno = cmd->hdr.seqno;
2112 event_timeout = QETH_IPA_TIMEOUT;
2113 } else {
2114 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2115 event_timeout = QETH_TIMEOUT;
2116 }
2117 qeth_prepare_control_data(card, len, iob);
2118
2119 spin_lock_irqsave(&card->lock, flags);
2120 list_add_tail(&reply->list, &card->cmd_waiter_list);
2121 spin_unlock_irqrestore(&card->lock, flags);
2122
2123 timeout = jiffies + event_timeout;
2124
2125 QETH_CARD_TEXT(card, 6, "noirqpnd");
2126 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2127 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2128 (addr_t) iob, 0, 0);
2129 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2130 if (rc) {
2131 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2132 "ccw_device_start rc = %i\n",
2133 dev_name(&card->write.ccwdev->dev), rc);
2134 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2135 spin_lock_irqsave(&card->lock, flags);
2136 list_del_init(&reply->list);
2137 qeth_put_reply(reply);
2138 spin_unlock_irqrestore(&card->lock, flags);
2139 qeth_release_buffer(iob->channel, iob);
2140 atomic_set(&card->write.irq_pending, 0);
2141 wake_up(&card->wait_q);
2142 return rc;
2143 }
2144
2145 /* we have only one long running ipassist, since we can ensure
2146 process context of this command we can sleep */
2147 if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2148 cmd->hdr.prot_version == QETH_PROT_IPV4) {
2149 if (!wait_event_timeout(reply->wait_q,
2150 atomic_read(&reply->received), event_timeout))
2151 goto time_err;
2152 } else {
2153 while (!atomic_read(&reply->received)) {
2154 if (time_after(jiffies, timeout))
2155 goto time_err;
2156 cpu_relax();
2157 }
2158 }
2159
2160 if (reply->rc == -EIO)
2161 goto error;
2162 rc = reply->rc;
2163 qeth_put_reply(reply);
2164 return rc;
2165
2166 time_err:
2167 reply->rc = -ETIME;
2168 spin_lock_irqsave(&reply->card->lock, flags);
2169 list_del_init(&reply->list);
2170 spin_unlock_irqrestore(&reply->card->lock, flags);
2171 atomic_inc(&reply->received);
2172 error:
2173 atomic_set(&card->write.irq_pending, 0);
2174 qeth_release_buffer(iob->channel, iob);
2175 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2176 rc = reply->rc;
2177 qeth_put_reply(reply);
2178 return rc;
2179 }
2180 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2181
qeth_cm_enable_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2182 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2183 unsigned long data)
2184 {
2185 struct qeth_cmd_buffer *iob;
2186
2187 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2188
2189 iob = (struct qeth_cmd_buffer *) data;
2190 memcpy(&card->token.cm_filter_r,
2191 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2192 QETH_MPC_TOKEN_LENGTH);
2193 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2194 return 0;
2195 }
2196
qeth_cm_enable(struct qeth_card * card)2197 static int qeth_cm_enable(struct qeth_card *card)
2198 {
2199 int rc;
2200 struct qeth_cmd_buffer *iob;
2201
2202 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2203
2204 iob = qeth_wait_for_buffer(&card->write);
2205 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2206 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2207 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2208 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2209 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2210
2211 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2212 qeth_cm_enable_cb, NULL);
2213 return rc;
2214 }
2215
qeth_cm_setup_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2216 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2217 unsigned long data)
2218 {
2219
2220 struct qeth_cmd_buffer *iob;
2221
2222 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2223
2224 iob = (struct qeth_cmd_buffer *) data;
2225 memcpy(&card->token.cm_connection_r,
2226 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2227 QETH_MPC_TOKEN_LENGTH);
2228 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2229 return 0;
2230 }
2231
qeth_cm_setup(struct qeth_card * card)2232 static int qeth_cm_setup(struct qeth_card *card)
2233 {
2234 int rc;
2235 struct qeth_cmd_buffer *iob;
2236
2237 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2238
2239 iob = qeth_wait_for_buffer(&card->write);
2240 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2241 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2242 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2243 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2244 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2245 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2246 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2247 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2248 qeth_cm_setup_cb, NULL);
2249 return rc;
2250
2251 }
2252
qeth_get_initial_mtu_for_card(struct qeth_card * card)2253 static int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2254 {
2255 switch (card->info.type) {
2256 case QETH_CARD_TYPE_UNKNOWN:
2257 return 1500;
2258 case QETH_CARD_TYPE_IQD:
2259 return card->info.max_mtu;
2260 case QETH_CARD_TYPE_OSD:
2261 switch (card->info.link_type) {
2262 case QETH_LINK_TYPE_HSTR:
2263 case QETH_LINK_TYPE_LANE_TR:
2264 return 2000;
2265 default:
2266 return card->options.layer2 ? 1500 : 1492;
2267 }
2268 case QETH_CARD_TYPE_OSM:
2269 case QETH_CARD_TYPE_OSX:
2270 return card->options.layer2 ? 1500 : 1492;
2271 default:
2272 return 1500;
2273 }
2274 }
2275
qeth_get_mtu_outof_framesize(int framesize)2276 static int qeth_get_mtu_outof_framesize(int framesize)
2277 {
2278 switch (framesize) {
2279 case 0x4000:
2280 return 8192;
2281 case 0x6000:
2282 return 16384;
2283 case 0xa000:
2284 return 32768;
2285 case 0xffff:
2286 return 57344;
2287 default:
2288 return 0;
2289 }
2290 }
2291
qeth_mtu_is_valid(struct qeth_card * card,int mtu)2292 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2293 {
2294 switch (card->info.type) {
2295 case QETH_CARD_TYPE_OSD:
2296 case QETH_CARD_TYPE_OSM:
2297 case QETH_CARD_TYPE_OSX:
2298 case QETH_CARD_TYPE_IQD:
2299 return ((mtu >= 576) &&
2300 (mtu <= card->info.max_mtu));
2301 case QETH_CARD_TYPE_OSN:
2302 case QETH_CARD_TYPE_UNKNOWN:
2303 default:
2304 return 1;
2305 }
2306 }
2307
qeth_ulp_enable_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2308 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2309 unsigned long data)
2310 {
2311
2312 __u16 mtu, framesize;
2313 __u16 len;
2314 __u8 link_type;
2315 struct qeth_cmd_buffer *iob;
2316
2317 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2318
2319 iob = (struct qeth_cmd_buffer *) data;
2320 memcpy(&card->token.ulp_filter_r,
2321 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2322 QETH_MPC_TOKEN_LENGTH);
2323 if (card->info.type == QETH_CARD_TYPE_IQD) {
2324 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2325 mtu = qeth_get_mtu_outof_framesize(framesize);
2326 if (!mtu) {
2327 iob->rc = -EINVAL;
2328 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2329 return 0;
2330 }
2331 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2332 /* frame size has changed */
2333 if (card->dev &&
2334 ((card->dev->mtu == card->info.initial_mtu) ||
2335 (card->dev->mtu > mtu)))
2336 card->dev->mtu = mtu;
2337 qeth_free_qdio_buffers(card);
2338 }
2339 card->info.initial_mtu = mtu;
2340 card->info.max_mtu = mtu;
2341 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2342 } else {
2343 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2344 iob->data);
2345 card->info.initial_mtu = min(card->info.max_mtu,
2346 qeth_get_initial_mtu_for_card(card));
2347 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2348 }
2349
2350 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2351 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2352 memcpy(&link_type,
2353 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2354 card->info.link_type = link_type;
2355 } else
2356 card->info.link_type = 0;
2357 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2358 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2359 return 0;
2360 }
2361
qeth_ulp_enable(struct qeth_card * card)2362 static int qeth_ulp_enable(struct qeth_card *card)
2363 {
2364 int rc;
2365 char prot_type;
2366 struct qeth_cmd_buffer *iob;
2367
2368 /*FIXME: trace view callbacks*/
2369 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2370
2371 iob = qeth_wait_for_buffer(&card->write);
2372 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2373
2374 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2375 (__u8) card->info.portno;
2376 if (card->options.layer2)
2377 if (card->info.type == QETH_CARD_TYPE_OSN)
2378 prot_type = QETH_PROT_OSN2;
2379 else
2380 prot_type = QETH_PROT_LAYER2;
2381 else
2382 prot_type = QETH_PROT_TCPIP;
2383
2384 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2385 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2386 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2387 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2388 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2389 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2390 qeth_ulp_enable_cb, NULL);
2391 return rc;
2392
2393 }
2394
qeth_ulp_setup_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2395 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2396 unsigned long data)
2397 {
2398 struct qeth_cmd_buffer *iob;
2399
2400 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2401
2402 iob = (struct qeth_cmd_buffer *) data;
2403 memcpy(&card->token.ulp_connection_r,
2404 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2405 QETH_MPC_TOKEN_LENGTH);
2406 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2407 3)) {
2408 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2409 dev_err(&card->gdev->dev, "A connection could not be "
2410 "established because of an OLM limit\n");
2411 iob->rc = -EMLINK;
2412 }
2413 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2414 return 0;
2415 }
2416
qeth_ulp_setup(struct qeth_card * card)2417 static int qeth_ulp_setup(struct qeth_card *card)
2418 {
2419 int rc;
2420 __u16 temp;
2421 struct qeth_cmd_buffer *iob;
2422 struct ccw_dev_id dev_id;
2423
2424 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2425
2426 iob = qeth_wait_for_buffer(&card->write);
2427 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2428
2429 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2430 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2431 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2432 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2433 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2434 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2435
2436 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2437 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2438 temp = (card->info.cula << 8) + card->info.unit_addr2;
2439 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2440 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2441 qeth_ulp_setup_cb, NULL);
2442 return rc;
2443 }
2444
qeth_init_qdio_out_buf(struct qeth_qdio_out_q * q,int bidx)2445 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2446 {
2447 int rc;
2448 struct qeth_qdio_out_buffer *newbuf;
2449
2450 rc = 0;
2451 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2452 if (!newbuf) {
2453 rc = -ENOMEM;
2454 goto out;
2455 }
2456 newbuf->buffer = q->qdio_bufs[bidx];
2457 skb_queue_head_init(&newbuf->skb_list);
2458 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2459 newbuf->q = q;
2460 newbuf->aob = NULL;
2461 newbuf->next_pending = q->bufs[bidx];
2462 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2463 q->bufs[bidx] = newbuf;
2464 if (q->bufstates) {
2465 q->bufstates[bidx].user = newbuf;
2466 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2467 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2468 QETH_CARD_TEXT_(q->card, 2, "%lx",
2469 (long) newbuf->next_pending);
2470 }
2471 out:
2472 return rc;
2473 }
2474
qeth_free_output_queue(struct qeth_qdio_out_q * q)2475 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2476 {
2477 if (!q)
2478 return;
2479
2480 qeth_clear_outq_buffers(q, 1);
2481 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2482 kfree(q);
2483 }
2484
qeth_alloc_qdio_out_buf(void)2485 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2486 {
2487 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2488
2489 if (!q)
2490 return NULL;
2491
2492 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2493 kfree(q);
2494 return NULL;
2495 }
2496 return q;
2497 }
2498
qeth_alloc_qdio_buffers(struct qeth_card * card)2499 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2500 {
2501 int i, j;
2502
2503 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2504
2505 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2506 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2507 return 0;
2508
2509 QETH_DBF_TEXT(SETUP, 2, "inq");
2510 card->qdio.in_q = qeth_alloc_qdio_queue();
2511 if (!card->qdio.in_q)
2512 goto out_nomem;
2513
2514 /* inbound buffer pool */
2515 if (qeth_alloc_buffer_pool(card))
2516 goto out_freeinq;
2517
2518 /* outbound */
2519 card->qdio.out_qs =
2520 kzalloc(card->qdio.no_out_queues *
2521 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2522 if (!card->qdio.out_qs)
2523 goto out_freepool;
2524 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2525 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2526 if (!card->qdio.out_qs[i])
2527 goto out_freeoutq;
2528 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2529 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2530 card->qdio.out_qs[i]->queue_no = i;
2531 /* give outbound qeth_qdio_buffers their qdio_buffers */
2532 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2533 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2534 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2535 goto out_freeoutqbufs;
2536 }
2537 }
2538
2539 /* completion */
2540 if (qeth_alloc_cq(card))
2541 goto out_freeoutq;
2542
2543 return 0;
2544
2545 out_freeoutqbufs:
2546 while (j > 0) {
2547 --j;
2548 kmem_cache_free(qeth_qdio_outbuf_cache,
2549 card->qdio.out_qs[i]->bufs[j]);
2550 card->qdio.out_qs[i]->bufs[j] = NULL;
2551 }
2552 out_freeoutq:
2553 while (i > 0)
2554 qeth_free_output_queue(card->qdio.out_qs[--i]);
2555 kfree(card->qdio.out_qs);
2556 card->qdio.out_qs = NULL;
2557 out_freepool:
2558 qeth_free_buffer_pool(card);
2559 out_freeinq:
2560 qeth_free_qdio_queue(card->qdio.in_q);
2561 card->qdio.in_q = NULL;
2562 out_nomem:
2563 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2564 return -ENOMEM;
2565 }
2566
qeth_free_qdio_buffers(struct qeth_card * card)2567 static void qeth_free_qdio_buffers(struct qeth_card *card)
2568 {
2569 int i, j;
2570
2571 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2572 QETH_QDIO_UNINITIALIZED)
2573 return;
2574
2575 qeth_free_cq(card);
2576 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2577 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2578 if (card->qdio.in_q->bufs[j].rx_skb)
2579 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2580 }
2581 qeth_free_qdio_queue(card->qdio.in_q);
2582 card->qdio.in_q = NULL;
2583 /* inbound buffer pool */
2584 qeth_free_buffer_pool(card);
2585 /* free outbound qdio_qs */
2586 if (card->qdio.out_qs) {
2587 for (i = 0; i < card->qdio.no_out_queues; i++)
2588 qeth_free_output_queue(card->qdio.out_qs[i]);
2589 kfree(card->qdio.out_qs);
2590 card->qdio.out_qs = NULL;
2591 }
2592 }
2593
qeth_create_qib_param_field(struct qeth_card * card,char * param_field)2594 static void qeth_create_qib_param_field(struct qeth_card *card,
2595 char *param_field)
2596 {
2597
2598 param_field[0] = _ascebc['P'];
2599 param_field[1] = _ascebc['C'];
2600 param_field[2] = _ascebc['I'];
2601 param_field[3] = _ascebc['T'];
2602 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2603 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2604 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2605 }
2606
qeth_create_qib_param_field_blkt(struct qeth_card * card,char * param_field)2607 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2608 char *param_field)
2609 {
2610 param_field[16] = _ascebc['B'];
2611 param_field[17] = _ascebc['L'];
2612 param_field[18] = _ascebc['K'];
2613 param_field[19] = _ascebc['T'];
2614 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2615 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2616 *((unsigned int *) (¶m_field[28])) =
2617 card->info.blkt.inter_packet_jumbo;
2618 }
2619
qeth_qdio_activate(struct qeth_card * card)2620 static int qeth_qdio_activate(struct qeth_card *card)
2621 {
2622 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2623 return qdio_activate(CARD_DDEV(card));
2624 }
2625
qeth_dm_act(struct qeth_card * card)2626 static int qeth_dm_act(struct qeth_card *card)
2627 {
2628 int rc;
2629 struct qeth_cmd_buffer *iob;
2630
2631 QETH_DBF_TEXT(SETUP, 2, "dmact");
2632
2633 iob = qeth_wait_for_buffer(&card->write);
2634 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2635
2636 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2637 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2638 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2639 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2640 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2641 return rc;
2642 }
2643
qeth_mpc_initialize(struct qeth_card * card)2644 static int qeth_mpc_initialize(struct qeth_card *card)
2645 {
2646 int rc;
2647
2648 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2649
2650 rc = qeth_issue_next_read(card);
2651 if (rc) {
2652 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2653 return rc;
2654 }
2655 rc = qeth_cm_enable(card);
2656 if (rc) {
2657 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2658 goto out_qdio;
2659 }
2660 rc = qeth_cm_setup(card);
2661 if (rc) {
2662 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2663 goto out_qdio;
2664 }
2665 rc = qeth_ulp_enable(card);
2666 if (rc) {
2667 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2668 goto out_qdio;
2669 }
2670 rc = qeth_ulp_setup(card);
2671 if (rc) {
2672 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2673 goto out_qdio;
2674 }
2675 rc = qeth_alloc_qdio_buffers(card);
2676 if (rc) {
2677 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2678 goto out_qdio;
2679 }
2680 rc = qeth_qdio_establish(card);
2681 if (rc) {
2682 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2683 qeth_free_qdio_buffers(card);
2684 goto out_qdio;
2685 }
2686 rc = qeth_qdio_activate(card);
2687 if (rc) {
2688 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2689 goto out_qdio;
2690 }
2691 rc = qeth_dm_act(card);
2692 if (rc) {
2693 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2694 goto out_qdio;
2695 }
2696
2697 return 0;
2698 out_qdio:
2699 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2700 qdio_free(CARD_DDEV(card));
2701 return rc;
2702 }
2703
qeth_print_status_message(struct qeth_card * card)2704 void qeth_print_status_message(struct qeth_card *card)
2705 {
2706 switch (card->info.type) {
2707 case QETH_CARD_TYPE_OSD:
2708 case QETH_CARD_TYPE_OSM:
2709 case QETH_CARD_TYPE_OSX:
2710 /* VM will use a non-zero first character
2711 * to indicate a HiperSockets like reporting
2712 * of the level OSA sets the first character to zero
2713 * */
2714 if (!card->info.mcl_level[0]) {
2715 sprintf(card->info.mcl_level, "%02x%02x",
2716 card->info.mcl_level[2],
2717 card->info.mcl_level[3]);
2718 break;
2719 }
2720 /* fallthrough */
2721 case QETH_CARD_TYPE_IQD:
2722 if ((card->info.guestlan) ||
2723 (card->info.mcl_level[0] & 0x80)) {
2724 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2725 card->info.mcl_level[0]];
2726 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2727 card->info.mcl_level[1]];
2728 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2729 card->info.mcl_level[2]];
2730 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2731 card->info.mcl_level[3]];
2732 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2733 }
2734 break;
2735 default:
2736 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2737 }
2738 dev_info(&card->gdev->dev,
2739 "Device is a%s card%s%s%s\nwith link type %s.\n",
2740 qeth_get_cardname(card),
2741 (card->info.mcl_level[0]) ? " (level: " : "",
2742 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2743 (card->info.mcl_level[0]) ? ")" : "",
2744 qeth_get_cardname_short(card));
2745 }
2746 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2747
qeth_initialize_working_pool_list(struct qeth_card * card)2748 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2749 {
2750 struct qeth_buffer_pool_entry *entry;
2751
2752 QETH_CARD_TEXT(card, 5, "inwrklst");
2753
2754 list_for_each_entry(entry,
2755 &card->qdio.init_pool.entry_list, init_list) {
2756 qeth_put_buffer_pool_entry(card, entry);
2757 }
2758 }
2759
qeth_find_free_buffer_pool_entry(struct qeth_card * card)2760 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2761 struct qeth_card *card)
2762 {
2763 struct list_head *plh;
2764 struct qeth_buffer_pool_entry *entry;
2765 int i, free;
2766 struct page *page;
2767
2768 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2769 return NULL;
2770
2771 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2772 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2773 free = 1;
2774 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2775 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2776 free = 0;
2777 break;
2778 }
2779 }
2780 if (free) {
2781 list_del_init(&entry->list);
2782 return entry;
2783 }
2784 }
2785
2786 /* no free buffer in pool so take first one and swap pages */
2787 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2788 struct qeth_buffer_pool_entry, list);
2789 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2790 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2791 page = alloc_page(GFP_ATOMIC);
2792 if (!page) {
2793 return NULL;
2794 } else {
2795 free_page((unsigned long)entry->elements[i]);
2796 entry->elements[i] = page_address(page);
2797 if (card->options.performance_stats)
2798 card->perf_stats.sg_alloc_page_rx++;
2799 }
2800 }
2801 }
2802 list_del_init(&entry->list);
2803 return entry;
2804 }
2805
qeth_init_input_buffer(struct qeth_card * card,struct qeth_qdio_buffer * buf)2806 static int qeth_init_input_buffer(struct qeth_card *card,
2807 struct qeth_qdio_buffer *buf)
2808 {
2809 struct qeth_buffer_pool_entry *pool_entry;
2810 int i;
2811
2812 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2813 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2814 if (!buf->rx_skb)
2815 return 1;
2816 }
2817
2818 pool_entry = qeth_find_free_buffer_pool_entry(card);
2819 if (!pool_entry)
2820 return 1;
2821
2822 /*
2823 * since the buffer is accessed only from the input_tasklet
2824 * there shouldn't be a need to synchronize; also, since we use
2825 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2826 * buffers
2827 */
2828
2829 buf->pool_entry = pool_entry;
2830 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2831 buf->buffer->element[i].length = PAGE_SIZE;
2832 buf->buffer->element[i].addr = pool_entry->elements[i];
2833 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2834 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2835 else
2836 buf->buffer->element[i].eflags = 0;
2837 buf->buffer->element[i].sflags = 0;
2838 }
2839 return 0;
2840 }
2841
qeth_init_qdio_queues(struct qeth_card * card)2842 int qeth_init_qdio_queues(struct qeth_card *card)
2843 {
2844 int i, j;
2845 int rc;
2846
2847 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2848
2849 /* inbound queue */
2850 qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2851 QDIO_MAX_BUFFERS_PER_Q);
2852 qeth_initialize_working_pool_list(card);
2853 /*give only as many buffers to hardware as we have buffer pool entries*/
2854 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2855 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2856 card->qdio.in_q->next_buf_to_init =
2857 card->qdio.in_buf_pool.buf_count - 1;
2858 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2859 card->qdio.in_buf_pool.buf_count - 1);
2860 if (rc) {
2861 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2862 return rc;
2863 }
2864
2865 /* completion */
2866 rc = qeth_cq_init(card);
2867 if (rc) {
2868 return rc;
2869 }
2870
2871 /* outbound queue */
2872 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2873 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2874 QDIO_MAX_BUFFERS_PER_Q);
2875 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2876 qeth_clear_output_buffer(card->qdio.out_qs[i],
2877 card->qdio.out_qs[i]->bufs[j],
2878 QETH_QDIO_BUF_EMPTY);
2879 }
2880 card->qdio.out_qs[i]->card = card;
2881 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2882 card->qdio.out_qs[i]->do_pack = 0;
2883 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2884 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2885 atomic_set(&card->qdio.out_qs[i]->state,
2886 QETH_OUT_Q_UNLOCKED);
2887 }
2888 return 0;
2889 }
2890 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2891
qeth_get_ipa_adp_type(enum qeth_link_types link_type)2892 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2893 {
2894 switch (link_type) {
2895 case QETH_LINK_TYPE_HSTR:
2896 return 2;
2897 default:
2898 return 1;
2899 }
2900 }
2901
qeth_fill_ipacmd_header(struct qeth_card * card,struct qeth_ipa_cmd * cmd,__u8 command,enum qeth_prot_versions prot)2902 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2903 struct qeth_ipa_cmd *cmd, __u8 command,
2904 enum qeth_prot_versions prot)
2905 {
2906 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2907 cmd->hdr.command = command;
2908 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2909 /* cmd->hdr.seqno is set by qeth_send_control_data() */
2910 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2911 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2912 if (card->options.layer2)
2913 cmd->hdr.prim_version_no = 2;
2914 else
2915 cmd->hdr.prim_version_no = 1;
2916 cmd->hdr.param_count = 1;
2917 cmd->hdr.prot_version = prot;
2918 cmd->hdr.ipa_supported = 0;
2919 cmd->hdr.ipa_enabled = 0;
2920 }
2921
qeth_get_ipacmd_buffer(struct qeth_card * card,enum qeth_ipa_cmds ipacmd,enum qeth_prot_versions prot)2922 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2923 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2924 {
2925 struct qeth_cmd_buffer *iob;
2926 struct qeth_ipa_cmd *cmd;
2927
2928 iob = qeth_get_buffer(&card->write);
2929 if (iob) {
2930 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2931 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2932 } else {
2933 dev_warn(&card->gdev->dev,
2934 "The qeth driver ran out of channel command buffers\n");
2935 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2936 dev_name(&card->gdev->dev));
2937 }
2938
2939 return iob;
2940 }
2941 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2942
qeth_prepare_ipa_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob,char prot_type)2943 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2944 char prot_type)
2945 {
2946 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2947 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2948 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2949 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2950 }
2951 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2952
2953 /**
2954 * qeth_send_ipa_cmd() - send an IPA command
2955 *
2956 * See qeth_send_control_data() for explanation of the arguments.
2957 */
2958
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)2959 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2960 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2961 unsigned long),
2962 void *reply_param)
2963 {
2964 int rc;
2965 char prot_type;
2966
2967 QETH_CARD_TEXT(card, 4, "sendipa");
2968
2969 if (card->options.layer2)
2970 if (card->info.type == QETH_CARD_TYPE_OSN)
2971 prot_type = QETH_PROT_OSN2;
2972 else
2973 prot_type = QETH_PROT_LAYER2;
2974 else
2975 prot_type = QETH_PROT_TCPIP;
2976 qeth_prepare_ipa_cmd(card, iob, prot_type);
2977 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2978 iob, reply_cb, reply_param);
2979 if (rc == -ETIME) {
2980 qeth_clear_ipacmd_list(card);
2981 qeth_schedule_recovery(card);
2982 }
2983 return rc;
2984 }
2985 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2986
qeth_send_startlan(struct qeth_card * card)2987 static int qeth_send_startlan(struct qeth_card *card)
2988 {
2989 int rc;
2990 struct qeth_cmd_buffer *iob;
2991
2992 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2993
2994 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2995 if (!iob)
2996 return -ENOMEM;
2997 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2998 return rc;
2999 }
3000
qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd * cmd)3001 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3002 {
3003 if (!cmd->hdr.return_code)
3004 cmd->hdr.return_code =
3005 cmd->data.setadapterparms.hdr.return_code;
3006 return cmd->hdr.return_code;
3007 }
3008
qeth_query_setadapterparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3009 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3010 struct qeth_reply *reply, unsigned long data)
3011 {
3012 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3013
3014 QETH_CARD_TEXT(card, 3, "quyadpcb");
3015 if (qeth_setadpparms_inspect_rc(cmd))
3016 return 0;
3017
3018 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3019 card->info.link_type =
3020 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3021 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3022 }
3023 card->options.adp.supported_funcs =
3024 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3025 return 0;
3026 }
3027
qeth_get_adapter_cmd(struct qeth_card * card,__u32 command,__u32 cmdlen)3028 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3029 __u32 command, __u32 cmdlen)
3030 {
3031 struct qeth_cmd_buffer *iob;
3032 struct qeth_ipa_cmd *cmd;
3033
3034 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3035 QETH_PROT_IPV4);
3036 if (iob) {
3037 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3038 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3039 cmd->data.setadapterparms.hdr.command_code = command;
3040 cmd->data.setadapterparms.hdr.used_total = 1;
3041 cmd->data.setadapterparms.hdr.seq_no = 1;
3042 }
3043
3044 return iob;
3045 }
3046
qeth_query_setadapterparms(struct qeth_card * card)3047 int qeth_query_setadapterparms(struct qeth_card *card)
3048 {
3049 int rc;
3050 struct qeth_cmd_buffer *iob;
3051
3052 QETH_CARD_TEXT(card, 3, "queryadp");
3053 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3054 sizeof(struct qeth_ipacmd_setadpparms));
3055 if (!iob)
3056 return -ENOMEM;
3057 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3058 return rc;
3059 }
3060 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3061
qeth_query_ipassists_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3062 static int qeth_query_ipassists_cb(struct qeth_card *card,
3063 struct qeth_reply *reply, unsigned long data)
3064 {
3065 struct qeth_ipa_cmd *cmd;
3066
3067 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3068
3069 cmd = (struct qeth_ipa_cmd *) data;
3070
3071 switch (cmd->hdr.return_code) {
3072 case IPA_RC_NOTSUPP:
3073 case IPA_RC_L2_UNSUPPORTED_CMD:
3074 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3075 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3076 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3077 return -0;
3078 default:
3079 if (cmd->hdr.return_code) {
3080 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3081 "rc=%d\n",
3082 dev_name(&card->gdev->dev),
3083 cmd->hdr.return_code);
3084 return 0;
3085 }
3086 }
3087
3088 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3089 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3090 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3091 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3092 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3093 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3094 } else
3095 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3096 "\n", dev_name(&card->gdev->dev));
3097 return 0;
3098 }
3099
qeth_query_ipassists(struct qeth_card * card,enum qeth_prot_versions prot)3100 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3101 {
3102 int rc;
3103 struct qeth_cmd_buffer *iob;
3104
3105 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3106 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3107 if (!iob)
3108 return -ENOMEM;
3109 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3110 return rc;
3111 }
3112 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3113
qeth_query_switch_attributes_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3114 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3115 struct qeth_reply *reply, unsigned long data)
3116 {
3117 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3118 struct qeth_query_switch_attributes *attrs;
3119 struct qeth_switch_info *sw_info;
3120
3121 QETH_CARD_TEXT(card, 2, "qswiatcb");
3122 if (qeth_setadpparms_inspect_rc(cmd))
3123 return 0;
3124
3125 sw_info = (struct qeth_switch_info *)reply->param;
3126 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3127 sw_info->capabilities = attrs->capabilities;
3128 sw_info->settings = attrs->settings;
3129 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3130 sw_info->settings);
3131 return 0;
3132 }
3133
qeth_query_switch_attributes(struct qeth_card * card,struct qeth_switch_info * sw_info)3134 int qeth_query_switch_attributes(struct qeth_card *card,
3135 struct qeth_switch_info *sw_info)
3136 {
3137 struct qeth_cmd_buffer *iob;
3138
3139 QETH_CARD_TEXT(card, 2, "qswiattr");
3140 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3141 return -EOPNOTSUPP;
3142 if (!netif_carrier_ok(card->dev))
3143 return -ENOMEDIUM;
3144 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3145 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3146 if (!iob)
3147 return -ENOMEM;
3148 return qeth_send_ipa_cmd(card, iob,
3149 qeth_query_switch_attributes_cb, sw_info);
3150 }
3151 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3152
qeth_query_setdiagass_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3153 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3154 struct qeth_reply *reply, unsigned long data)
3155 {
3156 struct qeth_ipa_cmd *cmd;
3157 __u16 rc;
3158
3159 cmd = (struct qeth_ipa_cmd *)data;
3160 rc = cmd->hdr.return_code;
3161 if (rc)
3162 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3163 else
3164 card->info.diagass_support = cmd->data.diagass.ext;
3165 return 0;
3166 }
3167
qeth_query_setdiagass(struct qeth_card * card)3168 static int qeth_query_setdiagass(struct qeth_card *card)
3169 {
3170 struct qeth_cmd_buffer *iob;
3171 struct qeth_ipa_cmd *cmd;
3172
3173 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3174 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3175 if (!iob)
3176 return -ENOMEM;
3177 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3178 cmd->data.diagass.subcmd_len = 16;
3179 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3180 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3181 }
3182
qeth_get_trap_id(struct qeth_card * card,struct qeth_trap_id * tid)3183 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3184 {
3185 unsigned long info = get_zeroed_page(GFP_KERNEL);
3186 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3187 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3188 struct ccw_dev_id ccwid;
3189 int level;
3190
3191 tid->chpid = card->info.chpid;
3192 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3193 tid->ssid = ccwid.ssid;
3194 tid->devno = ccwid.devno;
3195 if (!info)
3196 return;
3197 level = stsi(NULL, 0, 0, 0);
3198 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3199 tid->lparnr = info222->lpar_number;
3200 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3201 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3202 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3203 }
3204 free_page(info);
3205 return;
3206 }
3207
qeth_hw_trap_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3208 static int qeth_hw_trap_cb(struct qeth_card *card,
3209 struct qeth_reply *reply, unsigned long data)
3210 {
3211 struct qeth_ipa_cmd *cmd;
3212 __u16 rc;
3213
3214 cmd = (struct qeth_ipa_cmd *)data;
3215 rc = cmd->hdr.return_code;
3216 if (rc)
3217 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3218 return 0;
3219 }
3220
qeth_hw_trap(struct qeth_card * card,enum qeth_diags_trap_action action)3221 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3222 {
3223 struct qeth_cmd_buffer *iob;
3224 struct qeth_ipa_cmd *cmd;
3225
3226 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3227 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3228 if (!iob)
3229 return -ENOMEM;
3230 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3231 cmd->data.diagass.subcmd_len = 80;
3232 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3233 cmd->data.diagass.type = 1;
3234 cmd->data.diagass.action = action;
3235 switch (action) {
3236 case QETH_DIAGS_TRAP_ARM:
3237 cmd->data.diagass.options = 0x0003;
3238 cmd->data.diagass.ext = 0x00010000 +
3239 sizeof(struct qeth_trap_id);
3240 qeth_get_trap_id(card,
3241 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3242 break;
3243 case QETH_DIAGS_TRAP_DISARM:
3244 cmd->data.diagass.options = 0x0001;
3245 break;
3246 case QETH_DIAGS_TRAP_CAPTURE:
3247 break;
3248 }
3249 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3250 }
3251 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3252
qeth_check_qdio_errors(struct qeth_card * card,struct qdio_buffer * buf,unsigned int qdio_error,const char * dbftext)3253 static int qeth_check_qdio_errors(struct qeth_card *card,
3254 struct qdio_buffer *buf,
3255 unsigned int qdio_error,
3256 const char *dbftext)
3257 {
3258 if (qdio_error) {
3259 QETH_CARD_TEXT(card, 2, dbftext);
3260 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3261 buf->element[15].sflags);
3262 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3263 buf->element[14].sflags);
3264 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3265 if ((buf->element[15].sflags) == 0x12) {
3266 card->stats.rx_dropped++;
3267 return 0;
3268 } else
3269 return 1;
3270 }
3271 return 0;
3272 }
3273
qeth_queue_input_buffer(struct qeth_card * card,int index)3274 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3275 {
3276 struct qeth_qdio_q *queue = card->qdio.in_q;
3277 struct list_head *lh;
3278 int count;
3279 int i;
3280 int rc;
3281 int newcount = 0;
3282
3283 count = (index < queue->next_buf_to_init)?
3284 card->qdio.in_buf_pool.buf_count -
3285 (queue->next_buf_to_init - index) :
3286 card->qdio.in_buf_pool.buf_count -
3287 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3288 /* only requeue at a certain threshold to avoid SIGAs */
3289 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3290 for (i = queue->next_buf_to_init;
3291 i < queue->next_buf_to_init + count; ++i) {
3292 if (qeth_init_input_buffer(card,
3293 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3294 break;
3295 } else {
3296 newcount++;
3297 }
3298 }
3299
3300 if (newcount < count) {
3301 /* we are in memory shortage so we switch back to
3302 traditional skb allocation and drop packages */
3303 atomic_set(&card->force_alloc_skb, 3);
3304 count = newcount;
3305 } else {
3306 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3307 }
3308
3309 if (!count) {
3310 i = 0;
3311 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3312 i++;
3313 if (i == card->qdio.in_buf_pool.buf_count) {
3314 QETH_CARD_TEXT(card, 2, "qsarbw");
3315 card->reclaim_index = index;
3316 schedule_delayed_work(
3317 &card->buffer_reclaim_work,
3318 QETH_RECLAIM_WORK_TIME);
3319 }
3320 return;
3321 }
3322
3323 /*
3324 * according to old code it should be avoided to requeue all
3325 * 128 buffers in order to benefit from PCI avoidance.
3326 * this function keeps at least one buffer (the buffer at
3327 * 'index') un-requeued -> this buffer is the first buffer that
3328 * will be requeued the next time
3329 */
3330 if (card->options.performance_stats) {
3331 card->perf_stats.inbound_do_qdio_cnt++;
3332 card->perf_stats.inbound_do_qdio_start_time =
3333 qeth_get_micros();
3334 }
3335 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3336 queue->next_buf_to_init, count);
3337 if (card->options.performance_stats)
3338 card->perf_stats.inbound_do_qdio_time +=
3339 qeth_get_micros() -
3340 card->perf_stats.inbound_do_qdio_start_time;
3341 if (rc) {
3342 QETH_CARD_TEXT(card, 2, "qinberr");
3343 }
3344 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3345 QDIO_MAX_BUFFERS_PER_Q;
3346 }
3347 }
3348
qeth_buffer_reclaim_work(struct work_struct * work)3349 static void qeth_buffer_reclaim_work(struct work_struct *work)
3350 {
3351 struct qeth_card *card = container_of(work, struct qeth_card,
3352 buffer_reclaim_work.work);
3353
3354 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3355 qeth_queue_input_buffer(card, card->reclaim_index);
3356 }
3357
qeth_handle_send_error(struct qeth_card * card,struct qeth_qdio_out_buffer * buffer,unsigned int qdio_err)3358 static void qeth_handle_send_error(struct qeth_card *card,
3359 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3360 {
3361 int sbalf15 = buffer->buffer->element[15].sflags;
3362
3363 QETH_CARD_TEXT(card, 6, "hdsnderr");
3364 if (card->info.type == QETH_CARD_TYPE_IQD) {
3365 if (sbalf15 == 0) {
3366 qdio_err = 0;
3367 } else {
3368 qdio_err = 1;
3369 }
3370 }
3371 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3372
3373 if (!qdio_err)
3374 return;
3375
3376 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3377 return;
3378
3379 QETH_CARD_TEXT(card, 1, "lnkfail");
3380 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3381 (u16)qdio_err, (u8)sbalf15);
3382 }
3383
3384 /**
3385 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3386 * @queue: queue to check for packing buffer
3387 *
3388 * Returns number of buffers that were prepared for flush.
3389 */
qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q * queue)3390 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3391 {
3392 struct qeth_qdio_out_buffer *buffer;
3393
3394 buffer = queue->bufs[queue->next_buf_to_fill];
3395 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3396 (buffer->next_element_to_fill > 0)) {
3397 /* it's a packing buffer */
3398 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3399 queue->next_buf_to_fill =
3400 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3401 return 1;
3402 }
3403 return 0;
3404 }
3405
3406 /*
3407 * Switched to packing state if the number of used buffers on a queue
3408 * reaches a certain limit.
3409 */
qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q * queue)3410 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3411 {
3412 if (!queue->do_pack) {
3413 if (atomic_read(&queue->used_buffers)
3414 >= QETH_HIGH_WATERMARK_PACK){
3415 /* switch non-PACKING -> PACKING */
3416 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3417 if (queue->card->options.performance_stats)
3418 queue->card->perf_stats.sc_dp_p++;
3419 queue->do_pack = 1;
3420 }
3421 }
3422 }
3423
3424 /*
3425 * Switches from packing to non-packing mode. If there is a packing
3426 * buffer on the queue this buffer will be prepared to be flushed.
3427 * In that case 1 is returned to inform the caller. If no buffer
3428 * has to be flushed, zero is returned.
3429 */
qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q * queue)3430 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3431 {
3432 if (queue->do_pack) {
3433 if (atomic_read(&queue->used_buffers)
3434 <= QETH_LOW_WATERMARK_PACK) {
3435 /* switch PACKING -> non-PACKING */
3436 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3437 if (queue->card->options.performance_stats)
3438 queue->card->perf_stats.sc_p_dp++;
3439 queue->do_pack = 0;
3440 return qeth_prep_flush_pack_buffer(queue);
3441 }
3442 }
3443 return 0;
3444 }
3445
qeth_flush_buffers(struct qeth_qdio_out_q * queue,int index,int count)3446 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3447 int count)
3448 {
3449 struct qeth_qdio_out_buffer *buf;
3450 int rc;
3451 int i;
3452 unsigned int qdio_flags;
3453
3454 for (i = index; i < index + count; ++i) {
3455 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3456 buf = queue->bufs[bidx];
3457 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3458 SBAL_EFLAGS_LAST_ENTRY;
3459
3460 if (queue->bufstates)
3461 queue->bufstates[bidx].user = buf;
3462
3463 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3464 continue;
3465
3466 if (!queue->do_pack) {
3467 if ((atomic_read(&queue->used_buffers) >=
3468 (QETH_HIGH_WATERMARK_PACK -
3469 QETH_WATERMARK_PACK_FUZZ)) &&
3470 !atomic_read(&queue->set_pci_flags_count)) {
3471 /* it's likely that we'll go to packing
3472 * mode soon */
3473 atomic_inc(&queue->set_pci_flags_count);
3474 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3475 }
3476 } else {
3477 if (!atomic_read(&queue->set_pci_flags_count)) {
3478 /*
3479 * there's no outstanding PCI any more, so we
3480 * have to request a PCI to be sure the the PCI
3481 * will wake at some time in the future then we
3482 * can flush packed buffers that might still be
3483 * hanging around, which can happen if no
3484 * further send was requested by the stack
3485 */
3486 atomic_inc(&queue->set_pci_flags_count);
3487 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3488 }
3489 }
3490 }
3491
3492 netif_trans_update(queue->card->dev);
3493 if (queue->card->options.performance_stats) {
3494 queue->card->perf_stats.outbound_do_qdio_cnt++;
3495 queue->card->perf_stats.outbound_do_qdio_start_time =
3496 qeth_get_micros();
3497 }
3498 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3499 if (atomic_read(&queue->set_pci_flags_count))
3500 qdio_flags |= QDIO_FLAG_PCI_OUT;
3501 atomic_add(count, &queue->used_buffers);
3502
3503 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3504 queue->queue_no, index, count);
3505 if (queue->card->options.performance_stats)
3506 queue->card->perf_stats.outbound_do_qdio_time +=
3507 qeth_get_micros() -
3508 queue->card->perf_stats.outbound_do_qdio_start_time;
3509 if (rc) {
3510 queue->card->stats.tx_errors += count;
3511 /* ignore temporary SIGA errors without busy condition */
3512 if (rc == -ENOBUFS)
3513 return;
3514 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3515 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3516 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3517 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3518 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3519
3520 /* this must not happen under normal circumstances. if it
3521 * happens something is really wrong -> recover */
3522 qeth_schedule_recovery(queue->card);
3523 return;
3524 }
3525 if (queue->card->options.performance_stats)
3526 queue->card->perf_stats.bufs_sent += count;
3527 }
3528
qeth_check_outbound_queue(struct qeth_qdio_out_q * queue)3529 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3530 {
3531 int index;
3532 int flush_cnt = 0;
3533 int q_was_packing = 0;
3534
3535 /*
3536 * check if weed have to switch to non-packing mode or if
3537 * we have to get a pci flag out on the queue
3538 */
3539 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3540 !atomic_read(&queue->set_pci_flags_count)) {
3541 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3542 QETH_OUT_Q_UNLOCKED) {
3543 /*
3544 * If we get in here, there was no action in
3545 * do_send_packet. So, we check if there is a
3546 * packing buffer to be flushed here.
3547 */
3548 netif_stop_queue(queue->card->dev);
3549 index = queue->next_buf_to_fill;
3550 q_was_packing = queue->do_pack;
3551 /* queue->do_pack may change */
3552 barrier();
3553 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3554 if (!flush_cnt &&
3555 !atomic_read(&queue->set_pci_flags_count))
3556 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3557 if (queue->card->options.performance_stats &&
3558 q_was_packing)
3559 queue->card->perf_stats.bufs_sent_pack +=
3560 flush_cnt;
3561 if (flush_cnt)
3562 qeth_flush_buffers(queue, index, flush_cnt);
3563 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3564 }
3565 }
3566 }
3567
qeth_qdio_start_poll(struct ccw_device * ccwdev,int queue,unsigned long card_ptr)3568 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3569 unsigned long card_ptr)
3570 {
3571 struct qeth_card *card = (struct qeth_card *)card_ptr;
3572
3573 if (card->dev && (card->dev->flags & IFF_UP))
3574 napi_schedule(&card->napi);
3575 }
3576 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3577
qeth_configure_cq(struct qeth_card * card,enum qeth_cq cq)3578 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3579 {
3580 int rc;
3581
3582 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3583 rc = -1;
3584 goto out;
3585 } else {
3586 if (card->options.cq == cq) {
3587 rc = 0;
3588 goto out;
3589 }
3590
3591 if (card->state != CARD_STATE_DOWN &&
3592 card->state != CARD_STATE_RECOVER) {
3593 rc = -1;
3594 goto out;
3595 }
3596
3597 qeth_free_qdio_buffers(card);
3598 card->options.cq = cq;
3599 rc = 0;
3600 }
3601 out:
3602 return rc;
3603
3604 }
3605 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3606
3607
qeth_qdio_cq_handler(struct qeth_card * card,unsigned int qdio_err,unsigned int queue,int first_element,int count)3608 static void qeth_qdio_cq_handler(struct qeth_card *card,
3609 unsigned int qdio_err,
3610 unsigned int queue, int first_element, int count) {
3611 struct qeth_qdio_q *cq = card->qdio.c_q;
3612 int i;
3613 int rc;
3614
3615 if (!qeth_is_cq(card, queue))
3616 goto out;
3617
3618 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3619 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3620 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3621
3622 if (qdio_err) {
3623 netif_stop_queue(card->dev);
3624 qeth_schedule_recovery(card);
3625 goto out;
3626 }
3627
3628 if (card->options.performance_stats) {
3629 card->perf_stats.cq_cnt++;
3630 card->perf_stats.cq_start_time = qeth_get_micros();
3631 }
3632
3633 for (i = first_element; i < first_element + count; ++i) {
3634 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3635 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3636 int e;
3637
3638 e = 0;
3639 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3640 buffer->element[e].addr) {
3641 unsigned long phys_aob_addr;
3642
3643 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3644 qeth_qdio_handle_aob(card, phys_aob_addr);
3645 buffer->element[e].addr = NULL;
3646 buffer->element[e].eflags = 0;
3647 buffer->element[e].sflags = 0;
3648 buffer->element[e].length = 0;
3649
3650 ++e;
3651 }
3652
3653 buffer->element[15].eflags = 0;
3654 buffer->element[15].sflags = 0;
3655 }
3656 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3657 card->qdio.c_q->next_buf_to_init,
3658 count);
3659 if (rc) {
3660 dev_warn(&card->gdev->dev,
3661 "QDIO reported an error, rc=%i\n", rc);
3662 QETH_CARD_TEXT(card, 2, "qcqherr");
3663 }
3664 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3665 + count) % QDIO_MAX_BUFFERS_PER_Q;
3666
3667 netif_wake_queue(card->dev);
3668
3669 if (card->options.performance_stats) {
3670 int delta_t = qeth_get_micros();
3671 delta_t -= card->perf_stats.cq_start_time;
3672 card->perf_stats.cq_time += delta_t;
3673 }
3674 out:
3675 return;
3676 }
3677
qeth_qdio_input_handler(struct ccw_device * ccwdev,unsigned int qdio_err,unsigned int queue,int first_elem,int count,unsigned long card_ptr)3678 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3679 unsigned int queue, int first_elem, int count,
3680 unsigned long card_ptr)
3681 {
3682 struct qeth_card *card = (struct qeth_card *)card_ptr;
3683
3684 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3685 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3686
3687 if (qeth_is_cq(card, queue))
3688 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3689 else if (qdio_err)
3690 qeth_schedule_recovery(card);
3691
3692
3693 }
3694 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3695
qeth_qdio_output_handler(struct ccw_device * ccwdev,unsigned int qdio_error,int __queue,int first_element,int count,unsigned long card_ptr)3696 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3697 unsigned int qdio_error, int __queue, int first_element,
3698 int count, unsigned long card_ptr)
3699 {
3700 struct qeth_card *card = (struct qeth_card *) card_ptr;
3701 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3702 struct qeth_qdio_out_buffer *buffer;
3703 int i;
3704
3705 QETH_CARD_TEXT(card, 6, "qdouhdl");
3706 if (qdio_error & QDIO_ERROR_FATAL) {
3707 QETH_CARD_TEXT(card, 2, "achkcond");
3708 netif_stop_queue(card->dev);
3709 qeth_schedule_recovery(card);
3710 return;
3711 }
3712 if (card->options.performance_stats) {
3713 card->perf_stats.outbound_handler_cnt++;
3714 card->perf_stats.outbound_handler_start_time =
3715 qeth_get_micros();
3716 }
3717 for (i = first_element; i < (first_element + count); ++i) {
3718 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3719 buffer = queue->bufs[bidx];
3720 qeth_handle_send_error(card, buffer, qdio_error);
3721
3722 if (queue->bufstates &&
3723 (queue->bufstates[bidx].flags &
3724 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3725 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3726
3727 if (atomic_cmpxchg(&buffer->state,
3728 QETH_QDIO_BUF_PRIMED,
3729 QETH_QDIO_BUF_PENDING) ==
3730 QETH_QDIO_BUF_PRIMED) {
3731 qeth_notify_skbs(queue, buffer,
3732 TX_NOTIFY_PENDING);
3733 }
3734 buffer->aob = queue->bufstates[bidx].aob;
3735 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3736 QETH_CARD_TEXT(queue->card, 5, "aob");
3737 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3738 virt_to_phys(buffer->aob));
3739 if (qeth_init_qdio_out_buf(queue, bidx)) {
3740 QETH_CARD_TEXT(card, 2, "outofbuf");
3741 qeth_schedule_recovery(card);
3742 }
3743 } else {
3744 if (card->options.cq == QETH_CQ_ENABLED) {
3745 enum iucv_tx_notify n;
3746
3747 n = qeth_compute_cq_notification(
3748 buffer->buffer->element[15].sflags, 0);
3749 qeth_notify_skbs(queue, buffer, n);
3750 }
3751
3752 qeth_clear_output_buffer(queue, buffer,
3753 QETH_QDIO_BUF_EMPTY);
3754 }
3755 qeth_cleanup_handled_pending(queue, bidx, 0);
3756 }
3757 atomic_sub(count, &queue->used_buffers);
3758 /* check if we need to do something on this outbound queue */
3759 if (card->info.type != QETH_CARD_TYPE_IQD)
3760 qeth_check_outbound_queue(queue);
3761
3762 netif_wake_queue(queue->card->dev);
3763 if (card->options.performance_stats)
3764 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3765 card->perf_stats.outbound_handler_start_time;
3766 }
3767 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3768
3769 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
qeth_cut_iqd_prio(struct qeth_card * card,int queue_num)3770 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3771 {
3772 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3773 return 2;
3774 return queue_num;
3775 }
3776
3777 /**
3778 * Note: Function assumes that we have 4 outbound queues.
3779 */
qeth_get_priority_queue(struct qeth_card * card,struct sk_buff * skb,int ipv,int cast_type)3780 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3781 int ipv, int cast_type)
3782 {
3783 __be16 *tci;
3784 u8 tos;
3785
3786 if (cast_type && card->info.is_multicast_different)
3787 return card->info.is_multicast_different &
3788 (card->qdio.no_out_queues - 1);
3789
3790 switch (card->qdio.do_prio_queueing) {
3791 case QETH_PRIO_Q_ING_TOS:
3792 case QETH_PRIO_Q_ING_PREC:
3793 switch (ipv) {
3794 case 4:
3795 tos = ipv4_get_dsfield(ip_hdr(skb));
3796 break;
3797 case 6:
3798 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3799 break;
3800 default:
3801 return card->qdio.default_out_queue;
3802 }
3803 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3804 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3805 if (tos & IPTOS_MINCOST)
3806 return qeth_cut_iqd_prio(card, 3);
3807 if (tos & IPTOS_RELIABILITY)
3808 return 2;
3809 if (tos & IPTOS_THROUGHPUT)
3810 return 1;
3811 if (tos & IPTOS_LOWDELAY)
3812 return 0;
3813 break;
3814 case QETH_PRIO_Q_ING_SKB:
3815 if (skb->priority > 5)
3816 return 0;
3817 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3818 case QETH_PRIO_Q_ING_VLAN:
3819 tci = &((struct ethhdr *)skb->data)->h_proto;
3820 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3821 return qeth_cut_iqd_prio(card,
3822 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3823 break;
3824 default:
3825 break;
3826 }
3827 return card->qdio.default_out_queue;
3828 }
3829 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3830
3831 /**
3832 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3833 * @skb: SKB address
3834 *
3835 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3836 * fragmented part of the SKB. Returns zero for linear SKB.
3837 */
qeth_get_elements_for_frags(struct sk_buff * skb)3838 int qeth_get_elements_for_frags(struct sk_buff *skb)
3839 {
3840 int cnt, elements = 0;
3841
3842 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3843 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3844
3845 elements += qeth_get_elements_for_range(
3846 (addr_t)skb_frag_address(frag),
3847 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3848 }
3849 return elements;
3850 }
3851 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3852
3853 /**
3854 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3855 * @card: qeth card structure, to check max. elems.
3856 * @skb: SKB address
3857 * @extra_elems: extra elems needed, to check against max.
3858 * @data_offset: range starts at skb->data + data_offset
3859 *
3860 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3861 * skb data, including linear part and fragments. Checks if the result plus
3862 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3863 * Note: extra_elems is not included in the returned result.
3864 */
qeth_get_elements_no(struct qeth_card * card,struct sk_buff * skb,int extra_elems,int data_offset)3865 int qeth_get_elements_no(struct qeth_card *card,
3866 struct sk_buff *skb, int extra_elems, int data_offset)
3867 {
3868 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3869 int elements = qeth_get_elements_for_frags(skb);
3870 addr_t start = (addr_t)skb->data + data_offset;
3871
3872 if (start != end)
3873 elements += qeth_get_elements_for_range(start, end);
3874
3875 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3876 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3877 "(Number=%d / Length=%d). Discarded.\n",
3878 elements + extra_elems, skb->len);
3879 return 0;
3880 }
3881 return elements;
3882 }
3883 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3884
qeth_hdr_chk_and_bounce(struct sk_buff * skb,struct qeth_hdr ** hdr,int len)3885 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3886 {
3887 int hroom, inpage, rest;
3888
3889 if (((unsigned long)skb->data & PAGE_MASK) !=
3890 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3891 hroom = skb_headroom(skb);
3892 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3893 rest = len - inpage;
3894 if (rest > hroom)
3895 return 1;
3896 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3897 skb->data -= rest;
3898 skb->tail -= rest;
3899 *hdr = (struct qeth_hdr *)skb->data;
3900 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3901 }
3902 return 0;
3903 }
3904 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3905
3906 /**
3907 * qeth_push_hdr() - push a qeth_hdr onto an skb.
3908 * @skb: skb that the qeth_hdr should be pushed onto.
3909 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3910 * it contains a valid pointer to a qeth_hdr.
3911 * @len: length of the hdr that needs to be pushed on.
3912 *
3913 * Returns the pushed length. If the header can't be pushed on
3914 * (eg. because it would cross a page boundary), it is allocated from
3915 * the cache instead and 0 is returned.
3916 * Error to create the hdr is indicated by returning with < 0.
3917 */
qeth_push_hdr(struct sk_buff * skb,struct qeth_hdr ** hdr,unsigned int len)3918 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len)
3919 {
3920 if (skb_headroom(skb) >= len &&
3921 qeth_get_elements_for_range((addr_t)skb->data - len,
3922 (addr_t)skb->data) == 1) {
3923 *hdr = skb_push(skb, len);
3924 return len;
3925 }
3926 /* fall back */
3927 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3928 if (!*hdr)
3929 return -ENOMEM;
3930 return 0;
3931 }
3932 EXPORT_SYMBOL_GPL(qeth_push_hdr);
3933
__qeth_fill_buffer(struct sk_buff * skb,struct qeth_qdio_out_buffer * buf,bool is_first_elem,unsigned int offset)3934 static void __qeth_fill_buffer(struct sk_buff *skb,
3935 struct qeth_qdio_out_buffer *buf,
3936 bool is_first_elem, unsigned int offset)
3937 {
3938 struct qdio_buffer *buffer = buf->buffer;
3939 int element = buf->next_element_to_fill;
3940 int length = skb_headlen(skb) - offset;
3941 char *data = skb->data + offset;
3942 int length_here, cnt;
3943
3944 /* map linear part into buffer element(s) */
3945 while (length > 0) {
3946 /* length_here is the remaining amount of data in this page */
3947 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3948 if (length < length_here)
3949 length_here = length;
3950
3951 buffer->element[element].addr = data;
3952 buffer->element[element].length = length_here;
3953 length -= length_here;
3954 if (is_first_elem) {
3955 is_first_elem = false;
3956 if (length || skb_is_nonlinear(skb))
3957 /* skb needs additional elements */
3958 buffer->element[element].eflags =
3959 SBAL_EFLAGS_FIRST_FRAG;
3960 else
3961 buffer->element[element].eflags = 0;
3962 } else {
3963 buffer->element[element].eflags =
3964 SBAL_EFLAGS_MIDDLE_FRAG;
3965 }
3966 data += length_here;
3967 element++;
3968 }
3969
3970 /* map page frags into buffer element(s) */
3971 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3972 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3973
3974 data = skb_frag_address(frag);
3975 length = skb_frag_size(frag);
3976 while (length > 0) {
3977 length_here = PAGE_SIZE -
3978 ((unsigned long) data % PAGE_SIZE);
3979 if (length < length_here)
3980 length_here = length;
3981
3982 buffer->element[element].addr = data;
3983 buffer->element[element].length = length_here;
3984 buffer->element[element].eflags =
3985 SBAL_EFLAGS_MIDDLE_FRAG;
3986 length -= length_here;
3987 data += length_here;
3988 element++;
3989 }
3990 }
3991
3992 if (buffer->element[element - 1].eflags)
3993 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3994 buf->next_element_to_fill = element;
3995 }
3996
3997 /**
3998 * qeth_fill_buffer() - map skb into an output buffer
3999 * @queue: QDIO queue to submit the buffer on
4000 * @buf: buffer to transport the skb
4001 * @skb: skb to map into the buffer
4002 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4003 * from qeth_core_header_cache.
4004 * @offset: when mapping the skb, start at skb->data + offset
4005 * @hd_len: if > 0, build a dedicated header element of this size
4006 */
qeth_fill_buffer(struct qeth_qdio_out_q * queue,struct qeth_qdio_out_buffer * buf,struct sk_buff * skb,struct qeth_hdr * hdr,unsigned int offset,unsigned int hd_len)4007 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4008 struct qeth_qdio_out_buffer *buf,
4009 struct sk_buff *skb, struct qeth_hdr *hdr,
4010 unsigned int offset, unsigned int hd_len)
4011 {
4012 struct qdio_buffer *buffer = buf->buffer;
4013 bool is_first_elem = true;
4014 int flush_cnt = 0;
4015
4016 refcount_inc(&skb->users);
4017 skb_queue_tail(&buf->skb_list, skb);
4018
4019 /* build dedicated header element */
4020 if (hd_len) {
4021 int element = buf->next_element_to_fill;
4022 is_first_elem = false;
4023
4024 buffer->element[element].addr = hdr;
4025 buffer->element[element].length = hd_len;
4026 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4027 /* remember to free cache-allocated qeth_hdr: */
4028 buf->is_header[element] = ((void *)hdr != skb->data);
4029 buf->next_element_to_fill++;
4030 }
4031
4032 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4033
4034 if (!queue->do_pack) {
4035 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4036 /* set state to PRIMED -> will be flushed */
4037 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4038 flush_cnt = 1;
4039 } else {
4040 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4041 if (queue->card->options.performance_stats)
4042 queue->card->perf_stats.skbs_sent_pack++;
4043 if (buf->next_element_to_fill >=
4044 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4045 /*
4046 * packed buffer if full -> set state PRIMED
4047 * -> will be flushed
4048 */
4049 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4050 flush_cnt = 1;
4051 }
4052 }
4053 return flush_cnt;
4054 }
4055
qeth_do_send_packet_fast(struct qeth_card * card,struct qeth_qdio_out_q * queue,struct sk_buff * skb,struct qeth_hdr * hdr,unsigned int offset,unsigned int hd_len)4056 int qeth_do_send_packet_fast(struct qeth_card *card,
4057 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4058 struct qeth_hdr *hdr, unsigned int offset,
4059 unsigned int hd_len)
4060 {
4061 struct qeth_qdio_out_buffer *buffer;
4062 int index;
4063
4064 /* spin until we get the queue ... */
4065 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4066 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4067 /* ... now we've got the queue */
4068 index = queue->next_buf_to_fill;
4069 buffer = queue->bufs[queue->next_buf_to_fill];
4070 /*
4071 * check if buffer is empty to make sure that we do not 'overtake'
4072 * ourselves and try to fill a buffer that is already primed
4073 */
4074 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4075 goto out;
4076 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4077 QDIO_MAX_BUFFERS_PER_Q;
4078 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4079 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4080 qeth_flush_buffers(queue, index, 1);
4081 return 0;
4082 out:
4083 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4084 return -EBUSY;
4085 }
4086 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4087
qeth_do_send_packet(struct qeth_card * card,struct qeth_qdio_out_q * queue,struct sk_buff * skb,struct qeth_hdr * hdr,unsigned int offset,unsigned int hd_len,int elements_needed)4088 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4089 struct sk_buff *skb, struct qeth_hdr *hdr,
4090 unsigned int offset, unsigned int hd_len,
4091 int elements_needed)
4092 {
4093 struct qeth_qdio_out_buffer *buffer;
4094 int start_index;
4095 int flush_count = 0;
4096 int do_pack = 0;
4097 int tmp;
4098 int rc = 0;
4099
4100 /* spin until we get the queue ... */
4101 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4102 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4103 start_index = queue->next_buf_to_fill;
4104 buffer = queue->bufs[queue->next_buf_to_fill];
4105 /*
4106 * check if buffer is empty to make sure that we do not 'overtake'
4107 * ourselves and try to fill a buffer that is already primed
4108 */
4109 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4110 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4111 return -EBUSY;
4112 }
4113 /* check if we need to switch packing state of this queue */
4114 qeth_switch_to_packing_if_needed(queue);
4115 if (queue->do_pack) {
4116 do_pack = 1;
4117 /* does packet fit in current buffer? */
4118 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4119 buffer->next_element_to_fill) < elements_needed) {
4120 /* ... no -> set state PRIMED */
4121 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4122 flush_count++;
4123 queue->next_buf_to_fill =
4124 (queue->next_buf_to_fill + 1) %
4125 QDIO_MAX_BUFFERS_PER_Q;
4126 buffer = queue->bufs[queue->next_buf_to_fill];
4127 /* we did a step forward, so check buffer state
4128 * again */
4129 if (atomic_read(&buffer->state) !=
4130 QETH_QDIO_BUF_EMPTY) {
4131 qeth_flush_buffers(queue, start_index,
4132 flush_count);
4133 atomic_set(&queue->state,
4134 QETH_OUT_Q_UNLOCKED);
4135 rc = -EBUSY;
4136 goto out;
4137 }
4138 }
4139 }
4140 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4141 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4142 QDIO_MAX_BUFFERS_PER_Q;
4143 flush_count += tmp;
4144 if (flush_count)
4145 qeth_flush_buffers(queue, start_index, flush_count);
4146 else if (!atomic_read(&queue->set_pci_flags_count))
4147 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4148 /*
4149 * queue->state will go from LOCKED -> UNLOCKED or from
4150 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4151 * (switch packing state or flush buffer to get another pci flag out).
4152 * In that case we will enter this loop
4153 */
4154 while (atomic_dec_return(&queue->state)) {
4155 start_index = queue->next_buf_to_fill;
4156 /* check if we can go back to non-packing state */
4157 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4158 /*
4159 * check if we need to flush a packing buffer to get a pci
4160 * flag out on the queue
4161 */
4162 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4163 tmp = qeth_prep_flush_pack_buffer(queue);
4164 if (tmp) {
4165 qeth_flush_buffers(queue, start_index, tmp);
4166 flush_count += tmp;
4167 }
4168 }
4169 out:
4170 /* at this point the queue is UNLOCKED again */
4171 if (queue->card->options.performance_stats && do_pack)
4172 queue->card->perf_stats.bufs_sent_pack += flush_count;
4173
4174 return rc;
4175 }
4176 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4177
qeth_setadp_promisc_mode_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4178 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4179 struct qeth_reply *reply, unsigned long data)
4180 {
4181 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4182 struct qeth_ipacmd_setadpparms *setparms;
4183
4184 QETH_CARD_TEXT(card, 4, "prmadpcb");
4185
4186 setparms = &(cmd->data.setadapterparms);
4187 if (qeth_setadpparms_inspect_rc(cmd)) {
4188 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4189 setparms->data.mode = SET_PROMISC_MODE_OFF;
4190 }
4191 card->info.promisc_mode = setparms->data.mode;
4192 return 0;
4193 }
4194
qeth_setadp_promisc_mode(struct qeth_card * card)4195 void qeth_setadp_promisc_mode(struct qeth_card *card)
4196 {
4197 enum qeth_ipa_promisc_modes mode;
4198 struct net_device *dev = card->dev;
4199 struct qeth_cmd_buffer *iob;
4200 struct qeth_ipa_cmd *cmd;
4201
4202 QETH_CARD_TEXT(card, 4, "setprom");
4203
4204 if (((dev->flags & IFF_PROMISC) &&
4205 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4206 (!(dev->flags & IFF_PROMISC) &&
4207 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4208 return;
4209 mode = SET_PROMISC_MODE_OFF;
4210 if (dev->flags & IFF_PROMISC)
4211 mode = SET_PROMISC_MODE_ON;
4212 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4213
4214 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4215 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4216 if (!iob)
4217 return;
4218 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4219 cmd->data.setadapterparms.data.mode = mode;
4220 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4221 }
4222 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4223
qeth_change_mtu(struct net_device * dev,int new_mtu)4224 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4225 {
4226 struct qeth_card *card;
4227 char dbf_text[15];
4228
4229 card = dev->ml_priv;
4230
4231 QETH_CARD_TEXT(card, 4, "chgmtu");
4232 sprintf(dbf_text, "%8x", new_mtu);
4233 QETH_CARD_TEXT(card, 4, dbf_text);
4234
4235 if (!qeth_mtu_is_valid(card, new_mtu))
4236 return -EINVAL;
4237 dev->mtu = new_mtu;
4238 return 0;
4239 }
4240 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4241
qeth_get_stats(struct net_device * dev)4242 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4243 {
4244 struct qeth_card *card;
4245
4246 card = dev->ml_priv;
4247
4248 QETH_CARD_TEXT(card, 5, "getstat");
4249
4250 return &card->stats;
4251 }
4252 EXPORT_SYMBOL_GPL(qeth_get_stats);
4253
qeth_setadpparms_change_macaddr_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4254 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4255 struct qeth_reply *reply, unsigned long data)
4256 {
4257 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4258
4259 QETH_CARD_TEXT(card, 4, "chgmaccb");
4260 if (qeth_setadpparms_inspect_rc(cmd))
4261 return 0;
4262
4263 if (!card->options.layer2 ||
4264 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4265 memcpy(card->dev->dev_addr,
4266 &cmd->data.setadapterparms.data.change_addr.addr,
4267 OSA_ADDR_LEN);
4268 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4269 }
4270 return 0;
4271 }
4272
qeth_setadpparms_change_macaddr(struct qeth_card * card)4273 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4274 {
4275 int rc;
4276 struct qeth_cmd_buffer *iob;
4277 struct qeth_ipa_cmd *cmd;
4278
4279 QETH_CARD_TEXT(card, 4, "chgmac");
4280
4281 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4282 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4283 sizeof(struct qeth_change_addr));
4284 if (!iob)
4285 return -ENOMEM;
4286 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4287 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4288 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4289 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4290 card->dev->dev_addr, OSA_ADDR_LEN);
4291 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4292 NULL);
4293 return rc;
4294 }
4295 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4296
qeth_setadpparms_set_access_ctrl_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4297 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4298 struct qeth_reply *reply, unsigned long data)
4299 {
4300 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4301 struct qeth_set_access_ctrl *access_ctrl_req;
4302 int fallback = *(int *)reply->param;
4303
4304 QETH_CARD_TEXT(card, 4, "setaccb");
4305 if (cmd->hdr.return_code)
4306 return 0;
4307 qeth_setadpparms_inspect_rc(cmd);
4308
4309 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4310 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4311 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4312 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4313 cmd->data.setadapterparms.hdr.return_code);
4314 if (cmd->data.setadapterparms.hdr.return_code !=
4315 SET_ACCESS_CTRL_RC_SUCCESS)
4316 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4317 card->gdev->dev.kobj.name,
4318 access_ctrl_req->subcmd_code,
4319 cmd->data.setadapterparms.hdr.return_code);
4320 switch (cmd->data.setadapterparms.hdr.return_code) {
4321 case SET_ACCESS_CTRL_RC_SUCCESS:
4322 if (card->options.isolation == ISOLATION_MODE_NONE) {
4323 dev_info(&card->gdev->dev,
4324 "QDIO data connection isolation is deactivated\n");
4325 } else {
4326 dev_info(&card->gdev->dev,
4327 "QDIO data connection isolation is activated\n");
4328 }
4329 break;
4330 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4331 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4332 "deactivated\n", dev_name(&card->gdev->dev));
4333 if (fallback)
4334 card->options.isolation = card->options.prev_isolation;
4335 break;
4336 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4337 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4338 " activated\n", dev_name(&card->gdev->dev));
4339 if (fallback)
4340 card->options.isolation = card->options.prev_isolation;
4341 break;
4342 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4343 dev_err(&card->gdev->dev, "Adapter does not "
4344 "support QDIO data connection isolation\n");
4345 break;
4346 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4347 dev_err(&card->gdev->dev,
4348 "Adapter is dedicated. "
4349 "QDIO data connection isolation not supported\n");
4350 if (fallback)
4351 card->options.isolation = card->options.prev_isolation;
4352 break;
4353 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4354 dev_err(&card->gdev->dev,
4355 "TSO does not permit QDIO data connection isolation\n");
4356 if (fallback)
4357 card->options.isolation = card->options.prev_isolation;
4358 break;
4359 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4360 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4361 "support reflective relay mode\n");
4362 if (fallback)
4363 card->options.isolation = card->options.prev_isolation;
4364 break;
4365 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4366 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4367 "enabled at the adjacent switch port");
4368 if (fallback)
4369 card->options.isolation = card->options.prev_isolation;
4370 break;
4371 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4372 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4373 "at the adjacent switch failed\n");
4374 break;
4375 default:
4376 /* this should never happen */
4377 if (fallback)
4378 card->options.isolation = card->options.prev_isolation;
4379 break;
4380 }
4381 return 0;
4382 }
4383
qeth_setadpparms_set_access_ctrl(struct qeth_card * card,enum qeth_ipa_isolation_modes isolation,int fallback)4384 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4385 enum qeth_ipa_isolation_modes isolation, int fallback)
4386 {
4387 int rc;
4388 struct qeth_cmd_buffer *iob;
4389 struct qeth_ipa_cmd *cmd;
4390 struct qeth_set_access_ctrl *access_ctrl_req;
4391
4392 QETH_CARD_TEXT(card, 4, "setacctl");
4393
4394 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4395 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4396
4397 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4398 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4399 sizeof(struct qeth_set_access_ctrl));
4400 if (!iob)
4401 return -ENOMEM;
4402 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4403 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4404 access_ctrl_req->subcmd_code = isolation;
4405
4406 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4407 &fallback);
4408 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4409 return rc;
4410 }
4411
qeth_set_access_ctrl_online(struct qeth_card * card,int fallback)4412 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4413 {
4414 int rc = 0;
4415
4416 QETH_CARD_TEXT(card, 4, "setactlo");
4417
4418 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4419 card->info.type == QETH_CARD_TYPE_OSX) &&
4420 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4421 rc = qeth_setadpparms_set_access_ctrl(card,
4422 card->options.isolation, fallback);
4423 if (rc) {
4424 QETH_DBF_MESSAGE(3,
4425 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4426 card->gdev->dev.kobj.name,
4427 rc);
4428 rc = -EOPNOTSUPP;
4429 }
4430 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4431 card->options.isolation = ISOLATION_MODE_NONE;
4432
4433 dev_err(&card->gdev->dev, "Adapter does not "
4434 "support QDIO data connection isolation\n");
4435 rc = -EOPNOTSUPP;
4436 }
4437 return rc;
4438 }
4439 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4440
qeth_tx_timeout(struct net_device * dev)4441 void qeth_tx_timeout(struct net_device *dev)
4442 {
4443 struct qeth_card *card;
4444
4445 card = dev->ml_priv;
4446 QETH_CARD_TEXT(card, 4, "txtimeo");
4447 card->stats.tx_errors++;
4448 qeth_schedule_recovery(card);
4449 }
4450 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4451
qeth_mdio_read(struct net_device * dev,int phy_id,int regnum)4452 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4453 {
4454 struct qeth_card *card = dev->ml_priv;
4455 int rc = 0;
4456
4457 switch (regnum) {
4458 case MII_BMCR: /* Basic mode control register */
4459 rc = BMCR_FULLDPLX;
4460 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4461 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4462 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4463 rc |= BMCR_SPEED100;
4464 break;
4465 case MII_BMSR: /* Basic mode status register */
4466 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4467 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4468 BMSR_100BASE4;
4469 break;
4470 case MII_PHYSID1: /* PHYS ID 1 */
4471 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4472 dev->dev_addr[2];
4473 rc = (rc >> 5) & 0xFFFF;
4474 break;
4475 case MII_PHYSID2: /* PHYS ID 2 */
4476 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4477 break;
4478 case MII_ADVERTISE: /* Advertisement control reg */
4479 rc = ADVERTISE_ALL;
4480 break;
4481 case MII_LPA: /* Link partner ability reg */
4482 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4483 LPA_100BASE4 | LPA_LPACK;
4484 break;
4485 case MII_EXPANSION: /* Expansion register */
4486 break;
4487 case MII_DCOUNTER: /* disconnect counter */
4488 break;
4489 case MII_FCSCOUNTER: /* false carrier counter */
4490 break;
4491 case MII_NWAYTEST: /* N-way auto-neg test register */
4492 break;
4493 case MII_RERRCOUNTER: /* rx error counter */
4494 rc = card->stats.rx_errors;
4495 break;
4496 case MII_SREVISION: /* silicon revision */
4497 break;
4498 case MII_RESV1: /* reserved 1 */
4499 break;
4500 case MII_LBRERROR: /* loopback, rx, bypass error */
4501 break;
4502 case MII_PHYADDR: /* physical address */
4503 break;
4504 case MII_RESV2: /* reserved 2 */
4505 break;
4506 case MII_TPISTATUS: /* TPI status for 10mbps */
4507 break;
4508 case MII_NCONFIG: /* network interface config */
4509 break;
4510 default:
4511 break;
4512 }
4513 return rc;
4514 }
4515
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)4516 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4517 struct qeth_cmd_buffer *iob, int len,
4518 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4519 unsigned long),
4520 void *reply_param)
4521 {
4522 u16 s1, s2;
4523
4524 QETH_CARD_TEXT(card, 4, "sendsnmp");
4525
4526 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4527 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4528 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4529 /* adjust PDU length fields in IPA_PDU_HEADER */
4530 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4531 s2 = (u32) len;
4532 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4533 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4534 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4535 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4536 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4537 reply_cb, reply_param);
4538 }
4539
qeth_snmp_command_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long sdata)4540 static int qeth_snmp_command_cb(struct qeth_card *card,
4541 struct qeth_reply *reply, unsigned long sdata)
4542 {
4543 struct qeth_ipa_cmd *cmd;
4544 struct qeth_arp_query_info *qinfo;
4545 unsigned char *data;
4546 void *snmp_data;
4547 __u16 data_len;
4548
4549 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4550
4551 cmd = (struct qeth_ipa_cmd *) sdata;
4552 data = (unsigned char *)((char *)cmd - reply->offset);
4553 qinfo = (struct qeth_arp_query_info *) reply->param;
4554
4555 if (cmd->hdr.return_code) {
4556 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4557 return 0;
4558 }
4559 if (cmd->data.setadapterparms.hdr.return_code) {
4560 cmd->hdr.return_code =
4561 cmd->data.setadapterparms.hdr.return_code;
4562 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4563 return 0;
4564 }
4565 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4566 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4567 snmp_data = &cmd->data.setadapterparms.data.snmp;
4568 data_len -= offsetof(struct qeth_ipa_cmd,
4569 data.setadapterparms.data.snmp);
4570 } else {
4571 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4572 data_len -= offsetof(struct qeth_ipa_cmd,
4573 data.setadapterparms.data.snmp.request);
4574 }
4575
4576 /* check if there is enough room in userspace */
4577 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4578 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4579 cmd->hdr.return_code = IPA_RC_ENOMEM;
4580 return 0;
4581 }
4582 QETH_CARD_TEXT_(card, 4, "snore%i",
4583 cmd->data.setadapterparms.hdr.used_total);
4584 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4585 cmd->data.setadapterparms.hdr.seq_no);
4586 /*copy entries to user buffer*/
4587 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4588 qinfo->udata_offset += data_len;
4589
4590 /* check if all replies received ... */
4591 QETH_CARD_TEXT_(card, 4, "srtot%i",
4592 cmd->data.setadapterparms.hdr.used_total);
4593 QETH_CARD_TEXT_(card, 4, "srseq%i",
4594 cmd->data.setadapterparms.hdr.seq_no);
4595 if (cmd->data.setadapterparms.hdr.seq_no <
4596 cmd->data.setadapterparms.hdr.used_total)
4597 return 1;
4598 return 0;
4599 }
4600
qeth_snmp_command(struct qeth_card * card,char __user * udata)4601 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4602 {
4603 struct qeth_cmd_buffer *iob;
4604 struct qeth_ipa_cmd *cmd;
4605 struct qeth_snmp_ureq *ureq;
4606 unsigned int req_len;
4607 struct qeth_arp_query_info qinfo = {0, };
4608 int rc = 0;
4609
4610 QETH_CARD_TEXT(card, 3, "snmpcmd");
4611
4612 if (card->info.guestlan)
4613 return -EOPNOTSUPP;
4614
4615 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4616 (!card->options.layer2)) {
4617 return -EOPNOTSUPP;
4618 }
4619 /* skip 4 bytes (data_len struct member) to get req_len */
4620 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4621 return -EFAULT;
4622 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4623 sizeof(struct qeth_ipacmd_hdr) -
4624 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4625 return -EINVAL;
4626 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4627 if (IS_ERR(ureq)) {
4628 QETH_CARD_TEXT(card, 2, "snmpnome");
4629 return PTR_ERR(ureq);
4630 }
4631 qinfo.udata_len = ureq->hdr.data_len;
4632 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4633 if (!qinfo.udata) {
4634 kfree(ureq);
4635 return -ENOMEM;
4636 }
4637 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4638
4639 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4640 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4641 if (!iob) {
4642 rc = -ENOMEM;
4643 goto out;
4644 }
4645 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4646 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4647 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4648 qeth_snmp_command_cb, (void *)&qinfo);
4649 if (rc)
4650 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4651 QETH_CARD_IFNAME(card), rc);
4652 else {
4653 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4654 rc = -EFAULT;
4655 }
4656 out:
4657 kfree(ureq);
4658 kfree(qinfo.udata);
4659 return rc;
4660 }
4661
qeth_setadpparms_query_oat_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4662 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4663 struct qeth_reply *reply, unsigned long data)
4664 {
4665 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4666 struct qeth_qoat_priv *priv;
4667 char *resdata;
4668 int resdatalen;
4669
4670 QETH_CARD_TEXT(card, 3, "qoatcb");
4671 if (qeth_setadpparms_inspect_rc(cmd))
4672 return 0;
4673
4674 priv = (struct qeth_qoat_priv *)reply->param;
4675 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4676 resdata = (char *)data + 28;
4677
4678 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4679 cmd->hdr.return_code = IPA_RC_FFFF;
4680 return 0;
4681 }
4682
4683 memcpy((priv->buffer + priv->response_len), resdata,
4684 resdatalen);
4685 priv->response_len += resdatalen;
4686
4687 if (cmd->data.setadapterparms.hdr.seq_no <
4688 cmd->data.setadapterparms.hdr.used_total)
4689 return 1;
4690 return 0;
4691 }
4692
qeth_query_oat_command(struct qeth_card * card,char __user * udata)4693 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4694 {
4695 int rc = 0;
4696 struct qeth_cmd_buffer *iob;
4697 struct qeth_ipa_cmd *cmd;
4698 struct qeth_query_oat *oat_req;
4699 struct qeth_query_oat_data oat_data;
4700 struct qeth_qoat_priv priv;
4701 void __user *tmp;
4702
4703 QETH_CARD_TEXT(card, 3, "qoatcmd");
4704
4705 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4706 rc = -EOPNOTSUPP;
4707 goto out;
4708 }
4709
4710 if (copy_from_user(&oat_data, udata,
4711 sizeof(struct qeth_query_oat_data))) {
4712 rc = -EFAULT;
4713 goto out;
4714 }
4715
4716 priv.buffer_len = oat_data.buffer_len;
4717 priv.response_len = 0;
4718 priv.buffer = vzalloc(oat_data.buffer_len);
4719 if (!priv.buffer) {
4720 rc = -ENOMEM;
4721 goto out;
4722 }
4723
4724 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4725 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4726 sizeof(struct qeth_query_oat));
4727 if (!iob) {
4728 rc = -ENOMEM;
4729 goto out_free;
4730 }
4731 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4732 oat_req = &cmd->data.setadapterparms.data.query_oat;
4733 oat_req->subcmd_code = oat_data.command;
4734
4735 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4736 &priv);
4737 if (!rc) {
4738 if (is_compat_task())
4739 tmp = compat_ptr(oat_data.ptr);
4740 else
4741 tmp = (void __user *)(unsigned long)oat_data.ptr;
4742
4743 if (copy_to_user(tmp, priv.buffer,
4744 priv.response_len)) {
4745 rc = -EFAULT;
4746 goto out_free;
4747 }
4748
4749 oat_data.response_len = priv.response_len;
4750
4751 if (copy_to_user(udata, &oat_data,
4752 sizeof(struct qeth_query_oat_data)))
4753 rc = -EFAULT;
4754 } else
4755 if (rc == IPA_RC_FFFF)
4756 rc = -EFAULT;
4757
4758 out_free:
4759 vfree(priv.buffer);
4760 out:
4761 return rc;
4762 }
4763
qeth_query_card_info_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4764 static int qeth_query_card_info_cb(struct qeth_card *card,
4765 struct qeth_reply *reply, unsigned long data)
4766 {
4767 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4768 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4769 struct qeth_query_card_info *card_info;
4770
4771 QETH_CARD_TEXT(card, 2, "qcrdincb");
4772 if (qeth_setadpparms_inspect_rc(cmd))
4773 return 0;
4774
4775 card_info = &cmd->data.setadapterparms.data.card_info;
4776 carrier_info->card_type = card_info->card_type;
4777 carrier_info->port_mode = card_info->port_mode;
4778 carrier_info->port_speed = card_info->port_speed;
4779 return 0;
4780 }
4781
qeth_query_card_info(struct qeth_card * card,struct carrier_info * carrier_info)4782 static int qeth_query_card_info(struct qeth_card *card,
4783 struct carrier_info *carrier_info)
4784 {
4785 struct qeth_cmd_buffer *iob;
4786
4787 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4788 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4789 return -EOPNOTSUPP;
4790 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4791 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4792 if (!iob)
4793 return -ENOMEM;
4794 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4795 (void *)carrier_info);
4796 }
4797
4798 /**
4799 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4800 * @card: pointer to a qeth_card
4801 *
4802 * Returns
4803 * 0, if a MAC address has been set for the card's netdevice
4804 * a return code, for various error conditions
4805 */
qeth_vm_request_mac(struct qeth_card * card)4806 int qeth_vm_request_mac(struct qeth_card *card)
4807 {
4808 struct diag26c_mac_resp *response;
4809 struct diag26c_mac_req *request;
4810 struct ccw_dev_id id;
4811 int rc;
4812
4813 QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4814
4815 if (!card->dev)
4816 return -ENODEV;
4817
4818 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4819 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4820 if (!request || !response) {
4821 rc = -ENOMEM;
4822 goto out;
4823 }
4824
4825 ccw_device_get_id(CARD_DDEV(card), &id);
4826 request->resp_buf_len = sizeof(*response);
4827 request->resp_version = DIAG26C_VERSION2;
4828 request->op_code = DIAG26C_GET_MAC;
4829 request->devno = id.devno;
4830
4831 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4832 if (rc)
4833 goto out;
4834
4835 if (request->resp_buf_len < sizeof(*response) ||
4836 response->version != request->resp_version) {
4837 rc = -EIO;
4838 QETH_DBF_TEXT(SETUP, 2, "badresp");
4839 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4840 sizeof(request->resp_buf_len));
4841 } else if (!is_valid_ether_addr(response->mac)) {
4842 rc = -EINVAL;
4843 QETH_DBF_TEXT(SETUP, 2, "badmac");
4844 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4845 } else {
4846 ether_addr_copy(card->dev->dev_addr, response->mac);
4847 }
4848
4849 out:
4850 kfree(response);
4851 kfree(request);
4852 return rc;
4853 }
4854 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4855
qeth_get_qdio_q_format(struct qeth_card * card)4856 static int qeth_get_qdio_q_format(struct qeth_card *card)
4857 {
4858 if (card->info.type == QETH_CARD_TYPE_IQD)
4859 return QDIO_IQDIO_QFMT;
4860 else
4861 return QDIO_QETH_QFMT;
4862 }
4863
qeth_determine_capabilities(struct qeth_card * card)4864 static void qeth_determine_capabilities(struct qeth_card *card)
4865 {
4866 int rc;
4867 int length;
4868 char *prcd;
4869 struct ccw_device *ddev;
4870 int ddev_offline = 0;
4871
4872 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4873 ddev = CARD_DDEV(card);
4874 if (!ddev->online) {
4875 ddev_offline = 1;
4876 rc = ccw_device_set_online(ddev);
4877 if (rc) {
4878 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4879 goto out;
4880 }
4881 }
4882
4883 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4884 if (rc) {
4885 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4886 dev_name(&card->gdev->dev), rc);
4887 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4888 goto out_offline;
4889 }
4890 qeth_configure_unitaddr(card, prcd);
4891 if (ddev_offline)
4892 qeth_configure_blkt_default(card, prcd);
4893 kfree(prcd);
4894
4895 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4896 if (rc)
4897 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4898
4899 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4900 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4901 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4902 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4903 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4904 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4905 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4906 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4907 dev_info(&card->gdev->dev,
4908 "Completion Queueing supported\n");
4909 } else {
4910 card->options.cq = QETH_CQ_NOTAVAILABLE;
4911 }
4912
4913
4914 out_offline:
4915 if (ddev_offline == 1)
4916 ccw_device_set_offline(ddev);
4917 out:
4918 return;
4919 }
4920
qeth_qdio_establish_cq(struct qeth_card * card,struct qdio_buffer ** in_sbal_ptrs,void (** queue_start_poll)(struct ccw_device *,int,unsigned long))4921 static void qeth_qdio_establish_cq(struct qeth_card *card,
4922 struct qdio_buffer **in_sbal_ptrs,
4923 void (**queue_start_poll)
4924 (struct ccw_device *, int,
4925 unsigned long))
4926 {
4927 int i;
4928
4929 if (card->options.cq == QETH_CQ_ENABLED) {
4930 int offset = QDIO_MAX_BUFFERS_PER_Q *
4931 (card->qdio.no_in_queues - 1);
4932 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4933 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4934 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4935 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4936 }
4937
4938 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4939 }
4940 }
4941
qeth_qdio_establish(struct qeth_card * card)4942 static int qeth_qdio_establish(struct qeth_card *card)
4943 {
4944 struct qdio_initialize init_data;
4945 char *qib_param_field;
4946 struct qdio_buffer **in_sbal_ptrs;
4947 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4948 struct qdio_buffer **out_sbal_ptrs;
4949 int i, j, k;
4950 int rc = 0;
4951
4952 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4953
4954 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4955 GFP_KERNEL);
4956 if (!qib_param_field) {
4957 rc = -ENOMEM;
4958 goto out_free_nothing;
4959 }
4960
4961 qeth_create_qib_param_field(card, qib_param_field);
4962 qeth_create_qib_param_field_blkt(card, qib_param_field);
4963
4964 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4965 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4966 GFP_KERNEL);
4967 if (!in_sbal_ptrs) {
4968 rc = -ENOMEM;
4969 goto out_free_qib_param;
4970 }
4971 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4972 in_sbal_ptrs[i] = (struct qdio_buffer *)
4973 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4974 }
4975
4976 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4977 GFP_KERNEL);
4978 if (!queue_start_poll) {
4979 rc = -ENOMEM;
4980 goto out_free_in_sbals;
4981 }
4982 for (i = 0; i < card->qdio.no_in_queues; ++i)
4983 queue_start_poll[i] = card->discipline->start_poll;
4984
4985 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4986
4987 out_sbal_ptrs =
4988 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4989 sizeof(void *), GFP_KERNEL);
4990 if (!out_sbal_ptrs) {
4991 rc = -ENOMEM;
4992 goto out_free_queue_start_poll;
4993 }
4994 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4995 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4996 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4997 card->qdio.out_qs[i]->bufs[j]->buffer);
4998 }
4999
5000 memset(&init_data, 0, sizeof(struct qdio_initialize));
5001 init_data.cdev = CARD_DDEV(card);
5002 init_data.q_format = qeth_get_qdio_q_format(card);
5003 init_data.qib_param_field_format = 0;
5004 init_data.qib_param_field = qib_param_field;
5005 init_data.no_input_qs = card->qdio.no_in_queues;
5006 init_data.no_output_qs = card->qdio.no_out_queues;
5007 init_data.input_handler = card->discipline->input_handler;
5008 init_data.output_handler = card->discipline->output_handler;
5009 init_data.queue_start_poll_array = queue_start_poll;
5010 init_data.int_parm = (unsigned long) card;
5011 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
5012 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
5013 init_data.output_sbal_state_array = card->qdio.out_bufstates;
5014 init_data.scan_threshold =
5015 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
5016
5017 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5018 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5019 rc = qdio_allocate(&init_data);
5020 if (rc) {
5021 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5022 goto out;
5023 }
5024 rc = qdio_establish(&init_data);
5025 if (rc) {
5026 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5027 qdio_free(CARD_DDEV(card));
5028 }
5029 }
5030
5031 switch (card->options.cq) {
5032 case QETH_CQ_ENABLED:
5033 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5034 break;
5035 case QETH_CQ_DISABLED:
5036 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5037 break;
5038 default:
5039 break;
5040 }
5041 out:
5042 kfree(out_sbal_ptrs);
5043 out_free_queue_start_poll:
5044 kfree(queue_start_poll);
5045 out_free_in_sbals:
5046 kfree(in_sbal_ptrs);
5047 out_free_qib_param:
5048 kfree(qib_param_field);
5049 out_free_nothing:
5050 return rc;
5051 }
5052
qeth_core_free_card(struct qeth_card * card)5053 static void qeth_core_free_card(struct qeth_card *card)
5054 {
5055
5056 QETH_DBF_TEXT(SETUP, 2, "freecrd");
5057 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5058 qeth_clean_channel(&card->read);
5059 qeth_clean_channel(&card->write);
5060 qeth_free_qdio_buffers(card);
5061 unregister_service_level(&card->qeth_service_level);
5062 kfree(card);
5063 }
5064
qeth_trace_features(struct qeth_card * card)5065 void qeth_trace_features(struct qeth_card *card)
5066 {
5067 QETH_CARD_TEXT(card, 2, "features");
5068 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5069 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5070 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5071 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5072 sizeof(card->info.diagass_support));
5073 }
5074 EXPORT_SYMBOL_GPL(qeth_trace_features);
5075
5076 static struct ccw_device_id qeth_ids[] = {
5077 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5078 .driver_info = QETH_CARD_TYPE_OSD},
5079 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5080 .driver_info = QETH_CARD_TYPE_IQD},
5081 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5082 .driver_info = QETH_CARD_TYPE_OSN},
5083 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5084 .driver_info = QETH_CARD_TYPE_OSM},
5085 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5086 .driver_info = QETH_CARD_TYPE_OSX},
5087 {},
5088 };
5089 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5090
5091 static struct ccw_driver qeth_ccw_driver = {
5092 .driver = {
5093 .owner = THIS_MODULE,
5094 .name = "qeth",
5095 },
5096 .ids = qeth_ids,
5097 .probe = ccwgroup_probe_ccwdev,
5098 .remove = ccwgroup_remove_ccwdev,
5099 };
5100
qeth_core_hardsetup_card(struct qeth_card * card)5101 int qeth_core_hardsetup_card(struct qeth_card *card)
5102 {
5103 int retries = 3;
5104 int rc;
5105
5106 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5107 atomic_set(&card->force_alloc_skb, 0);
5108 qeth_update_from_chp_desc(card);
5109 retry:
5110 if (retries < 3)
5111 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5112 dev_name(&card->gdev->dev));
5113 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5114 ccw_device_set_offline(CARD_DDEV(card));
5115 ccw_device_set_offline(CARD_WDEV(card));
5116 ccw_device_set_offline(CARD_RDEV(card));
5117 qdio_free(CARD_DDEV(card));
5118 rc = ccw_device_set_online(CARD_RDEV(card));
5119 if (rc)
5120 goto retriable;
5121 rc = ccw_device_set_online(CARD_WDEV(card));
5122 if (rc)
5123 goto retriable;
5124 rc = ccw_device_set_online(CARD_DDEV(card));
5125 if (rc)
5126 goto retriable;
5127 retriable:
5128 if (rc == -ERESTARTSYS) {
5129 QETH_DBF_TEXT(SETUP, 2, "break1");
5130 return rc;
5131 } else if (rc) {
5132 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5133 if (--retries < 0)
5134 goto out;
5135 else
5136 goto retry;
5137 }
5138 qeth_determine_capabilities(card);
5139 qeth_init_tokens(card);
5140 qeth_init_func_level(card);
5141 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5142 if (rc == -ERESTARTSYS) {
5143 QETH_DBF_TEXT(SETUP, 2, "break2");
5144 return rc;
5145 } else if (rc) {
5146 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5147 if (--retries < 0)
5148 goto out;
5149 else
5150 goto retry;
5151 }
5152 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5153 if (rc == -ERESTARTSYS) {
5154 QETH_DBF_TEXT(SETUP, 2, "break3");
5155 return rc;
5156 } else if (rc) {
5157 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5158 if (--retries < 0)
5159 goto out;
5160 else
5161 goto retry;
5162 }
5163 card->read_or_write_problem = 0;
5164 rc = qeth_mpc_initialize(card);
5165 if (rc) {
5166 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5167 goto out;
5168 }
5169
5170 rc = qeth_send_startlan(card);
5171 if (rc) {
5172 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5173 if (rc == IPA_RC_LAN_OFFLINE) {
5174 dev_warn(&card->gdev->dev,
5175 "The LAN is offline\n");
5176 card->lan_online = 0;
5177 } else {
5178 rc = -ENODEV;
5179 goto out;
5180 }
5181 } else
5182 card->lan_online = 1;
5183
5184 card->options.ipa4.supported_funcs = 0;
5185 card->options.ipa6.supported_funcs = 0;
5186 card->options.adp.supported_funcs = 0;
5187 card->options.sbp.supported_funcs = 0;
5188 card->info.diagass_support = 0;
5189 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5190 if (rc == -ENOMEM)
5191 goto out;
5192 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5193 rc = qeth_query_setadapterparms(card);
5194 if (rc < 0) {
5195 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5196 goto out;
5197 }
5198 }
5199 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5200 rc = qeth_query_setdiagass(card);
5201 if (rc < 0) {
5202 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5203 goto out;
5204 }
5205 }
5206 return 0;
5207 out:
5208 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5209 "an error on the device\n");
5210 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5211 dev_name(&card->gdev->dev), rc);
5212 return rc;
5213 }
5214 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5215
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)5216 static int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5217 struct qdio_buffer_element *element,
5218 struct sk_buff **pskb, int offset, int *pfrag,
5219 int data_len)
5220 {
5221 struct page *page = virt_to_page(element->addr);
5222 if (*pskb == NULL) {
5223 if (qethbuffer->rx_skb) {
5224 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5225 *pskb = qethbuffer->rx_skb;
5226 qethbuffer->rx_skb = NULL;
5227 } else {
5228 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5229 if (!(*pskb))
5230 return -ENOMEM;
5231 }
5232
5233 skb_reserve(*pskb, ETH_HLEN);
5234 if (data_len <= QETH_RX_PULL_LEN) {
5235 skb_put_data(*pskb, element->addr + offset, data_len);
5236 } else {
5237 get_page(page);
5238 skb_put_data(*pskb, element->addr + offset,
5239 QETH_RX_PULL_LEN);
5240 skb_fill_page_desc(*pskb, *pfrag, page,
5241 offset + QETH_RX_PULL_LEN,
5242 data_len - QETH_RX_PULL_LEN);
5243 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5244 (*pskb)->len += data_len - QETH_RX_PULL_LEN;
5245 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5246 (*pfrag)++;
5247 }
5248 } else {
5249 get_page(page);
5250 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5251 (*pskb)->data_len += data_len;
5252 (*pskb)->len += data_len;
5253 (*pskb)->truesize += data_len;
5254 (*pfrag)++;
5255 }
5256
5257
5258 return 0;
5259 }
5260
qeth_is_last_sbale(struct qdio_buffer_element * sbale)5261 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5262 {
5263 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5264 }
5265
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)5266 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5267 struct qeth_qdio_buffer *qethbuffer,
5268 struct qdio_buffer_element **__element, int *__offset,
5269 struct qeth_hdr **hdr)
5270 {
5271 struct qdio_buffer_element *element = *__element;
5272 struct qdio_buffer *buffer = qethbuffer->buffer;
5273 int offset = *__offset;
5274 struct sk_buff *skb = NULL;
5275 int skb_len = 0;
5276 void *data_ptr;
5277 int data_len;
5278 int headroom = 0;
5279 int use_rx_sg = 0;
5280 int frag = 0;
5281
5282 /* qeth_hdr must not cross element boundaries */
5283 if (element->length < offset + sizeof(struct qeth_hdr)) {
5284 if (qeth_is_last_sbale(element))
5285 return NULL;
5286 element++;
5287 offset = 0;
5288 if (element->length < sizeof(struct qeth_hdr))
5289 return NULL;
5290 }
5291 *hdr = element->addr + offset;
5292
5293 offset += sizeof(struct qeth_hdr);
5294 switch ((*hdr)->hdr.l2.id) {
5295 case QETH_HEADER_TYPE_LAYER2:
5296 skb_len = (*hdr)->hdr.l2.pkt_length;
5297 break;
5298 case QETH_HEADER_TYPE_LAYER3:
5299 skb_len = (*hdr)->hdr.l3.length;
5300 headroom = ETH_HLEN;
5301 break;
5302 case QETH_HEADER_TYPE_OSN:
5303 skb_len = (*hdr)->hdr.osn.pdu_length;
5304 headroom = sizeof(struct qeth_hdr);
5305 break;
5306 default:
5307 break;
5308 }
5309
5310 if (!skb_len)
5311 return NULL;
5312
5313 if (((skb_len >= card->options.rx_sg_cb) &&
5314 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5315 (!atomic_read(&card->force_alloc_skb))) ||
5316 (card->options.cq == QETH_CQ_ENABLED)) {
5317 use_rx_sg = 1;
5318 } else {
5319 skb = dev_alloc_skb(skb_len + headroom);
5320 if (!skb)
5321 goto no_mem;
5322 if (headroom)
5323 skb_reserve(skb, headroom);
5324 }
5325
5326 data_ptr = element->addr + offset;
5327 while (skb_len) {
5328 data_len = min(skb_len, (int)(element->length - offset));
5329 if (data_len) {
5330 if (use_rx_sg) {
5331 if (qeth_create_skb_frag(qethbuffer, element,
5332 &skb, offset, &frag, data_len))
5333 goto no_mem;
5334 } else {
5335 skb_put_data(skb, data_ptr, data_len);
5336 }
5337 }
5338 skb_len -= data_len;
5339 if (skb_len) {
5340 if (qeth_is_last_sbale(element)) {
5341 QETH_CARD_TEXT(card, 4, "unexeob");
5342 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5343 dev_kfree_skb_any(skb);
5344 card->stats.rx_errors++;
5345 return NULL;
5346 }
5347 element++;
5348 offset = 0;
5349 data_ptr = element->addr;
5350 } else {
5351 offset += data_len;
5352 }
5353 }
5354 *__element = element;
5355 *__offset = offset;
5356 if (use_rx_sg && card->options.performance_stats) {
5357 card->perf_stats.sg_skbs_rx++;
5358 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5359 }
5360 return skb;
5361 no_mem:
5362 if (net_ratelimit()) {
5363 QETH_CARD_TEXT(card, 2, "noskbmem");
5364 }
5365 card->stats.rx_dropped++;
5366 return NULL;
5367 }
5368 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5369
qeth_poll(struct napi_struct * napi,int budget)5370 int qeth_poll(struct napi_struct *napi, int budget)
5371 {
5372 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5373 int work_done = 0;
5374 struct qeth_qdio_buffer *buffer;
5375 int done;
5376 int new_budget = budget;
5377
5378 if (card->options.performance_stats) {
5379 card->perf_stats.inbound_cnt++;
5380 card->perf_stats.inbound_start_time = qeth_get_micros();
5381 }
5382
5383 while (1) {
5384 if (!card->rx.b_count) {
5385 card->rx.qdio_err = 0;
5386 card->rx.b_count = qdio_get_next_buffers(
5387 card->data.ccwdev, 0, &card->rx.b_index,
5388 &card->rx.qdio_err);
5389 if (card->rx.b_count <= 0) {
5390 card->rx.b_count = 0;
5391 break;
5392 }
5393 card->rx.b_element =
5394 &card->qdio.in_q->bufs[card->rx.b_index]
5395 .buffer->element[0];
5396 card->rx.e_offset = 0;
5397 }
5398
5399 while (card->rx.b_count) {
5400 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5401 if (!(card->rx.qdio_err &&
5402 qeth_check_qdio_errors(card, buffer->buffer,
5403 card->rx.qdio_err, "qinerr")))
5404 work_done +=
5405 card->discipline->process_rx_buffer(
5406 card, new_budget, &done);
5407 else
5408 done = 1;
5409
5410 if (done) {
5411 if (card->options.performance_stats)
5412 card->perf_stats.bufs_rec++;
5413 qeth_put_buffer_pool_entry(card,
5414 buffer->pool_entry);
5415 qeth_queue_input_buffer(card, card->rx.b_index);
5416 card->rx.b_count--;
5417 if (card->rx.b_count) {
5418 card->rx.b_index =
5419 (card->rx.b_index + 1) %
5420 QDIO_MAX_BUFFERS_PER_Q;
5421 card->rx.b_element =
5422 &card->qdio.in_q
5423 ->bufs[card->rx.b_index]
5424 .buffer->element[0];
5425 card->rx.e_offset = 0;
5426 }
5427 }
5428
5429 if (work_done >= budget)
5430 goto out;
5431 else
5432 new_budget = budget - work_done;
5433 }
5434 }
5435
5436 napi_complete(napi);
5437 if (qdio_start_irq(card->data.ccwdev, 0))
5438 napi_schedule(&card->napi);
5439 out:
5440 if (card->options.performance_stats)
5441 card->perf_stats.inbound_time += qeth_get_micros() -
5442 card->perf_stats.inbound_start_time;
5443 return work_done;
5444 }
5445 EXPORT_SYMBOL_GPL(qeth_poll);
5446
qeth_setassparms_inspect_rc(struct qeth_ipa_cmd * cmd)5447 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5448 {
5449 if (!cmd->hdr.return_code)
5450 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5451 return cmd->hdr.return_code;
5452 }
5453
qeth_setassparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)5454 int qeth_setassparms_cb(struct qeth_card *card,
5455 struct qeth_reply *reply, unsigned long data)
5456 {
5457 struct qeth_ipa_cmd *cmd;
5458
5459 QETH_CARD_TEXT(card, 4, "defadpcb");
5460
5461 cmd = (struct qeth_ipa_cmd *) data;
5462 if (cmd->hdr.return_code == 0) {
5463 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5464 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5465 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5466 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5467 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5468 }
5469 return 0;
5470 }
5471 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5472
qeth_get_setassparms_cmd(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code,__u16 len,enum qeth_prot_versions prot)5473 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5474 enum qeth_ipa_funcs ipa_func,
5475 __u16 cmd_code, __u16 len,
5476 enum qeth_prot_versions prot)
5477 {
5478 struct qeth_cmd_buffer *iob;
5479 struct qeth_ipa_cmd *cmd;
5480
5481 QETH_CARD_TEXT(card, 4, "getasscm");
5482 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5483
5484 if (iob) {
5485 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5486 cmd->data.setassparms.hdr.assist_no = ipa_func;
5487 cmd->data.setassparms.hdr.length = 8 + len;
5488 cmd->data.setassparms.hdr.command_code = cmd_code;
5489 cmd->data.setassparms.hdr.return_code = 0;
5490 cmd->data.setassparms.hdr.seq_no = 0;
5491 }
5492
5493 return iob;
5494 }
5495 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5496
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)5497 int qeth_send_setassparms(struct qeth_card *card,
5498 struct qeth_cmd_buffer *iob, __u16 len, long data,
5499 int (*reply_cb)(struct qeth_card *,
5500 struct qeth_reply *, unsigned long),
5501 void *reply_param)
5502 {
5503 int rc;
5504 struct qeth_ipa_cmd *cmd;
5505
5506 QETH_CARD_TEXT(card, 4, "sendassp");
5507
5508 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5509 if (len <= sizeof(__u32))
5510 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5511 else /* (len > sizeof(__u32)) */
5512 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5513
5514 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5515 return rc;
5516 }
5517 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5518
qeth_send_simple_setassparms(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code,long data)5519 int qeth_send_simple_setassparms(struct qeth_card *card,
5520 enum qeth_ipa_funcs ipa_func,
5521 __u16 cmd_code, long data)
5522 {
5523 int rc;
5524 int length = 0;
5525 struct qeth_cmd_buffer *iob;
5526
5527 QETH_CARD_TEXT(card, 4, "simassp4");
5528 if (data)
5529 length = sizeof(__u32);
5530 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5531 length, QETH_PROT_IPV4);
5532 if (!iob)
5533 return -ENOMEM;
5534 rc = qeth_send_setassparms(card, iob, length, data,
5535 qeth_setassparms_cb, NULL);
5536 return rc;
5537 }
5538 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5539
qeth_unregister_dbf_views(void)5540 static void qeth_unregister_dbf_views(void)
5541 {
5542 int x;
5543 for (x = 0; x < QETH_DBF_INFOS; x++) {
5544 debug_unregister(qeth_dbf[x].id);
5545 qeth_dbf[x].id = NULL;
5546 }
5547 }
5548
qeth_dbf_longtext(debug_info_t * id,int level,char * fmt,...)5549 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5550 {
5551 char dbf_txt_buf[32];
5552 va_list args;
5553
5554 if (!debug_level_enabled(id, level))
5555 return;
5556 va_start(args, fmt);
5557 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5558 va_end(args);
5559 debug_text_event(id, level, dbf_txt_buf);
5560 }
5561 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5562
qeth_register_dbf_views(void)5563 static int qeth_register_dbf_views(void)
5564 {
5565 int ret;
5566 int x;
5567
5568 for (x = 0; x < QETH_DBF_INFOS; x++) {
5569 /* register the areas */
5570 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5571 qeth_dbf[x].pages,
5572 qeth_dbf[x].areas,
5573 qeth_dbf[x].len);
5574 if (qeth_dbf[x].id == NULL) {
5575 qeth_unregister_dbf_views();
5576 return -ENOMEM;
5577 }
5578
5579 /* register a view */
5580 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5581 if (ret) {
5582 qeth_unregister_dbf_views();
5583 return ret;
5584 }
5585
5586 /* set a passing level */
5587 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5588 }
5589
5590 return 0;
5591 }
5592
qeth_core_load_discipline(struct qeth_card * card,enum qeth_discipline_id discipline)5593 int qeth_core_load_discipline(struct qeth_card *card,
5594 enum qeth_discipline_id discipline)
5595 {
5596 int rc = 0;
5597
5598 mutex_lock(&qeth_mod_mutex);
5599 switch (discipline) {
5600 case QETH_DISCIPLINE_LAYER3:
5601 card->discipline = try_then_request_module(
5602 symbol_get(qeth_l3_discipline), "qeth_l3");
5603 break;
5604 case QETH_DISCIPLINE_LAYER2:
5605 card->discipline = try_then_request_module(
5606 symbol_get(qeth_l2_discipline), "qeth_l2");
5607 break;
5608 default:
5609 break;
5610 }
5611
5612 if (!card->discipline) {
5613 dev_err(&card->gdev->dev, "There is no kernel module to "
5614 "support discipline %d\n", discipline);
5615 rc = -EINVAL;
5616 }
5617 mutex_unlock(&qeth_mod_mutex);
5618 return rc;
5619 }
5620
qeth_core_free_discipline(struct qeth_card * card)5621 void qeth_core_free_discipline(struct qeth_card *card)
5622 {
5623 if (card->options.layer2)
5624 symbol_put(qeth_l2_discipline);
5625 else
5626 symbol_put(qeth_l3_discipline);
5627 card->discipline = NULL;
5628 }
5629
5630 const struct device_type qeth_generic_devtype = {
5631 .name = "qeth_generic",
5632 .groups = qeth_generic_attr_groups,
5633 };
5634 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5635
5636 static const struct device_type qeth_osn_devtype = {
5637 .name = "qeth_osn",
5638 .groups = qeth_osn_attr_groups,
5639 };
5640
5641 #define DBF_NAME_LEN 20
5642
5643 struct qeth_dbf_entry {
5644 char dbf_name[DBF_NAME_LEN];
5645 debug_info_t *dbf_info;
5646 struct list_head dbf_list;
5647 };
5648
5649 static LIST_HEAD(qeth_dbf_list);
5650 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5651
qeth_get_dbf_entry(char * name)5652 static debug_info_t *qeth_get_dbf_entry(char *name)
5653 {
5654 struct qeth_dbf_entry *entry;
5655 debug_info_t *rc = NULL;
5656
5657 mutex_lock(&qeth_dbf_list_mutex);
5658 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5659 if (strcmp(entry->dbf_name, name) == 0) {
5660 rc = entry->dbf_info;
5661 break;
5662 }
5663 }
5664 mutex_unlock(&qeth_dbf_list_mutex);
5665 return rc;
5666 }
5667
qeth_add_dbf_entry(struct qeth_card * card,char * name)5668 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5669 {
5670 struct qeth_dbf_entry *new_entry;
5671
5672 card->debug = debug_register(name, 2, 1, 8);
5673 if (!card->debug) {
5674 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5675 goto err;
5676 }
5677 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5678 goto err_dbg;
5679 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5680 if (!new_entry)
5681 goto err_dbg;
5682 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5683 new_entry->dbf_info = card->debug;
5684 mutex_lock(&qeth_dbf_list_mutex);
5685 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5686 mutex_unlock(&qeth_dbf_list_mutex);
5687
5688 return 0;
5689
5690 err_dbg:
5691 debug_unregister(card->debug);
5692 err:
5693 return -ENOMEM;
5694 }
5695
qeth_clear_dbf_list(void)5696 static void qeth_clear_dbf_list(void)
5697 {
5698 struct qeth_dbf_entry *entry, *tmp;
5699
5700 mutex_lock(&qeth_dbf_list_mutex);
5701 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5702 list_del(&entry->dbf_list);
5703 debug_unregister(entry->dbf_info);
5704 kfree(entry);
5705 }
5706 mutex_unlock(&qeth_dbf_list_mutex);
5707 }
5708
qeth_core_probe_device(struct ccwgroup_device * gdev)5709 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5710 {
5711 struct qeth_card *card;
5712 struct device *dev;
5713 int rc;
5714 enum qeth_discipline_id enforced_disc;
5715 unsigned long flags;
5716 char dbf_name[DBF_NAME_LEN];
5717
5718 QETH_DBF_TEXT(SETUP, 2, "probedev");
5719
5720 dev = &gdev->dev;
5721 if (!get_device(dev))
5722 return -ENODEV;
5723
5724 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5725
5726 card = qeth_alloc_card();
5727 if (!card) {
5728 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5729 rc = -ENOMEM;
5730 goto err_dev;
5731 }
5732
5733 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5734 dev_name(&gdev->dev));
5735 card->debug = qeth_get_dbf_entry(dbf_name);
5736 if (!card->debug) {
5737 rc = qeth_add_dbf_entry(card, dbf_name);
5738 if (rc)
5739 goto err_card;
5740 }
5741
5742 card->read.ccwdev = gdev->cdev[0];
5743 card->write.ccwdev = gdev->cdev[1];
5744 card->data.ccwdev = gdev->cdev[2];
5745 dev_set_drvdata(&gdev->dev, card);
5746 card->gdev = gdev;
5747 gdev->cdev[0]->handler = qeth_irq;
5748 gdev->cdev[1]->handler = qeth_irq;
5749 gdev->cdev[2]->handler = qeth_irq;
5750
5751 rc = qeth_determine_card_type(card);
5752 if (rc) {
5753 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5754 goto err_card;
5755 }
5756 rc = qeth_setup_card(card);
5757 if (rc) {
5758 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5759 goto err_card;
5760 }
5761
5762 qeth_determine_capabilities(card);
5763 enforced_disc = qeth_enforce_discipline(card);
5764 switch (enforced_disc) {
5765 case QETH_DISCIPLINE_UNDETERMINED:
5766 gdev->dev.type = &qeth_generic_devtype;
5767 break;
5768 default:
5769 card->info.layer_enforced = true;
5770 rc = qeth_core_load_discipline(card, enforced_disc);
5771 if (rc)
5772 goto err_card;
5773
5774 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5775 ? card->discipline->devtype
5776 : &qeth_osn_devtype;
5777 rc = card->discipline->setup(card->gdev);
5778 if (rc)
5779 goto err_disc;
5780 break;
5781 }
5782
5783 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5784 list_add_tail(&card->list, &qeth_core_card_list.list);
5785 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5786 return 0;
5787
5788 err_disc:
5789 qeth_core_free_discipline(card);
5790 err_card:
5791 qeth_core_free_card(card);
5792 err_dev:
5793 put_device(dev);
5794 return rc;
5795 }
5796
qeth_core_remove_device(struct ccwgroup_device * gdev)5797 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5798 {
5799 unsigned long flags;
5800 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5801
5802 QETH_DBF_TEXT(SETUP, 2, "removedv");
5803
5804 if (card->discipline) {
5805 card->discipline->remove(gdev);
5806 qeth_core_free_discipline(card);
5807 }
5808
5809 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5810 list_del(&card->list);
5811 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5812 qeth_core_free_card(card);
5813 dev_set_drvdata(&gdev->dev, NULL);
5814 put_device(&gdev->dev);
5815 return;
5816 }
5817
qeth_core_set_online(struct ccwgroup_device * gdev)5818 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5819 {
5820 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5821 int rc = 0;
5822 enum qeth_discipline_id def_discipline;
5823
5824 if (!card->discipline) {
5825 if (card->info.type == QETH_CARD_TYPE_IQD)
5826 def_discipline = QETH_DISCIPLINE_LAYER3;
5827 else
5828 def_discipline = QETH_DISCIPLINE_LAYER2;
5829 rc = qeth_core_load_discipline(card, def_discipline);
5830 if (rc)
5831 goto err;
5832 rc = card->discipline->setup(card->gdev);
5833 if (rc) {
5834 qeth_core_free_discipline(card);
5835 goto err;
5836 }
5837 }
5838 rc = card->discipline->set_online(gdev);
5839 err:
5840 return rc;
5841 }
5842
qeth_core_set_offline(struct ccwgroup_device * gdev)5843 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5844 {
5845 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5846 return card->discipline->set_offline(gdev);
5847 }
5848
qeth_core_shutdown(struct ccwgroup_device * gdev)5849 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5850 {
5851 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5852 qeth_set_allowed_threads(card, 0, 1);
5853 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5854 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5855 qeth_qdio_clear_card(card, 0);
5856 qeth_clear_qdio_buffers(card);
5857 qdio_free(CARD_DDEV(card));
5858 }
5859
qeth_core_freeze(struct ccwgroup_device * gdev)5860 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5861 {
5862 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5863 if (card->discipline && card->discipline->freeze)
5864 return card->discipline->freeze(gdev);
5865 return 0;
5866 }
5867
qeth_core_thaw(struct ccwgroup_device * gdev)5868 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5869 {
5870 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5871 if (card->discipline && card->discipline->thaw)
5872 return card->discipline->thaw(gdev);
5873 return 0;
5874 }
5875
qeth_core_restore(struct ccwgroup_device * gdev)5876 static int qeth_core_restore(struct ccwgroup_device *gdev)
5877 {
5878 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5879 if (card->discipline && card->discipline->restore)
5880 return card->discipline->restore(gdev);
5881 return 0;
5882 }
5883
5884 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5885 .driver = {
5886 .owner = THIS_MODULE,
5887 .name = "qeth",
5888 },
5889 .setup = qeth_core_probe_device,
5890 .remove = qeth_core_remove_device,
5891 .set_online = qeth_core_set_online,
5892 .set_offline = qeth_core_set_offline,
5893 .shutdown = qeth_core_shutdown,
5894 .prepare = NULL,
5895 .complete = NULL,
5896 .freeze = qeth_core_freeze,
5897 .thaw = qeth_core_thaw,
5898 .restore = qeth_core_restore,
5899 };
5900
group_store(struct device_driver * ddrv,const char * buf,size_t count)5901 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5902 size_t count)
5903 {
5904 int err;
5905
5906 err = ccwgroup_create_dev(qeth_core_root_dev,
5907 &qeth_core_ccwgroup_driver, 3, buf);
5908
5909 return err ? err : count;
5910 }
5911 static DRIVER_ATTR_WO(group);
5912
5913 static struct attribute *qeth_drv_attrs[] = {
5914 &driver_attr_group.attr,
5915 NULL,
5916 };
5917 static struct attribute_group qeth_drv_attr_group = {
5918 .attrs = qeth_drv_attrs,
5919 };
5920 static const struct attribute_group *qeth_drv_attr_groups[] = {
5921 &qeth_drv_attr_group,
5922 NULL,
5923 };
5924
qeth_do_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)5925 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5926 {
5927 struct qeth_card *card = dev->ml_priv;
5928 struct mii_ioctl_data *mii_data;
5929 int rc = 0;
5930
5931 if (!card)
5932 return -ENODEV;
5933
5934 if (!qeth_card_hw_is_reachable(card))
5935 return -ENODEV;
5936
5937 if (card->info.type == QETH_CARD_TYPE_OSN)
5938 return -EPERM;
5939
5940 switch (cmd) {
5941 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5942 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5943 break;
5944 case SIOC_QETH_GET_CARD_TYPE:
5945 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5946 card->info.type == QETH_CARD_TYPE_OSM ||
5947 card->info.type == QETH_CARD_TYPE_OSX) &&
5948 !card->info.guestlan)
5949 return 1;
5950 else
5951 return 0;
5952 case SIOCGMIIPHY:
5953 mii_data = if_mii(rq);
5954 mii_data->phy_id = 0;
5955 break;
5956 case SIOCGMIIREG:
5957 mii_data = if_mii(rq);
5958 if (mii_data->phy_id != 0)
5959 rc = -EINVAL;
5960 else
5961 mii_data->val_out = qeth_mdio_read(dev,
5962 mii_data->phy_id, mii_data->reg_num);
5963 break;
5964 case SIOC_QETH_QUERY_OAT:
5965 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5966 break;
5967 default:
5968 if (card->discipline->do_ioctl)
5969 rc = card->discipline->do_ioctl(dev, rq, cmd);
5970 else
5971 rc = -EOPNOTSUPP;
5972 }
5973 if (rc)
5974 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5975 return rc;
5976 }
5977 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5978
5979 static struct {
5980 const char str[ETH_GSTRING_LEN];
5981 } qeth_ethtool_stats_keys[] = {
5982 /* 0 */{"rx skbs"},
5983 {"rx buffers"},
5984 {"tx skbs"},
5985 {"tx buffers"},
5986 {"tx skbs no packing"},
5987 {"tx buffers no packing"},
5988 {"tx skbs packing"},
5989 {"tx buffers packing"},
5990 {"tx sg skbs"},
5991 {"tx sg frags"},
5992 /* 10 */{"rx sg skbs"},
5993 {"rx sg frags"},
5994 {"rx sg page allocs"},
5995 {"tx large kbytes"},
5996 {"tx large count"},
5997 {"tx pk state ch n->p"},
5998 {"tx pk state ch p->n"},
5999 {"tx pk watermark low"},
6000 {"tx pk watermark high"},
6001 {"queue 0 buffer usage"},
6002 /* 20 */{"queue 1 buffer usage"},
6003 {"queue 2 buffer usage"},
6004 {"queue 3 buffer usage"},
6005 {"rx poll time"},
6006 {"rx poll count"},
6007 {"rx do_QDIO time"},
6008 {"rx do_QDIO count"},
6009 {"tx handler time"},
6010 {"tx handler count"},
6011 {"tx time"},
6012 /* 30 */{"tx count"},
6013 {"tx do_QDIO time"},
6014 {"tx do_QDIO count"},
6015 {"tx csum"},
6016 {"tx lin"},
6017 {"tx linfail"},
6018 {"cq handler count"},
6019 {"cq handler time"}
6020 };
6021
qeth_core_get_sset_count(struct net_device * dev,int stringset)6022 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6023 {
6024 switch (stringset) {
6025 case ETH_SS_STATS:
6026 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6027 default:
6028 return -EINVAL;
6029 }
6030 }
6031 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6032
qeth_core_get_ethtool_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)6033 void qeth_core_get_ethtool_stats(struct net_device *dev,
6034 struct ethtool_stats *stats, u64 *data)
6035 {
6036 struct qeth_card *card = dev->ml_priv;
6037 data[0] = card->stats.rx_packets -
6038 card->perf_stats.initial_rx_packets;
6039 data[1] = card->perf_stats.bufs_rec;
6040 data[2] = card->stats.tx_packets -
6041 card->perf_stats.initial_tx_packets;
6042 data[3] = card->perf_stats.bufs_sent;
6043 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6044 - card->perf_stats.skbs_sent_pack;
6045 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6046 data[6] = card->perf_stats.skbs_sent_pack;
6047 data[7] = card->perf_stats.bufs_sent_pack;
6048 data[8] = card->perf_stats.sg_skbs_sent;
6049 data[9] = card->perf_stats.sg_frags_sent;
6050 data[10] = card->perf_stats.sg_skbs_rx;
6051 data[11] = card->perf_stats.sg_frags_rx;
6052 data[12] = card->perf_stats.sg_alloc_page_rx;
6053 data[13] = (card->perf_stats.large_send_bytes >> 10);
6054 data[14] = card->perf_stats.large_send_cnt;
6055 data[15] = card->perf_stats.sc_dp_p;
6056 data[16] = card->perf_stats.sc_p_dp;
6057 data[17] = QETH_LOW_WATERMARK_PACK;
6058 data[18] = QETH_HIGH_WATERMARK_PACK;
6059 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6060 data[20] = (card->qdio.no_out_queues > 1) ?
6061 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6062 data[21] = (card->qdio.no_out_queues > 2) ?
6063 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6064 data[22] = (card->qdio.no_out_queues > 3) ?
6065 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6066 data[23] = card->perf_stats.inbound_time;
6067 data[24] = card->perf_stats.inbound_cnt;
6068 data[25] = card->perf_stats.inbound_do_qdio_time;
6069 data[26] = card->perf_stats.inbound_do_qdio_cnt;
6070 data[27] = card->perf_stats.outbound_handler_time;
6071 data[28] = card->perf_stats.outbound_handler_cnt;
6072 data[29] = card->perf_stats.outbound_time;
6073 data[30] = card->perf_stats.outbound_cnt;
6074 data[31] = card->perf_stats.outbound_do_qdio_time;
6075 data[32] = card->perf_stats.outbound_do_qdio_cnt;
6076 data[33] = card->perf_stats.tx_csum;
6077 data[34] = card->perf_stats.tx_lin;
6078 data[35] = card->perf_stats.tx_linfail;
6079 data[36] = card->perf_stats.cq_cnt;
6080 data[37] = card->perf_stats.cq_time;
6081 }
6082 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6083
qeth_core_get_strings(struct net_device * dev,u32 stringset,u8 * data)6084 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6085 {
6086 switch (stringset) {
6087 case ETH_SS_STATS:
6088 memcpy(data, &qeth_ethtool_stats_keys,
6089 sizeof(qeth_ethtool_stats_keys));
6090 break;
6091 default:
6092 WARN_ON(1);
6093 break;
6094 }
6095 }
6096 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6097
qeth_core_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)6098 void qeth_core_get_drvinfo(struct net_device *dev,
6099 struct ethtool_drvinfo *info)
6100 {
6101 struct qeth_card *card = dev->ml_priv;
6102
6103 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6104 sizeof(info->driver));
6105 strlcpy(info->version, "1.0", sizeof(info->version));
6106 strlcpy(info->fw_version, card->info.mcl_level,
6107 sizeof(info->fw_version));
6108 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6109 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6110 }
6111 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6112
6113 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6114 /* Autoneg and full-duplex are supported and advertised unconditionally. */
6115 /* Always advertise and support all speeds up to specified, and only one */
6116 /* specified port type. */
qeth_set_cmd_adv_sup(struct ethtool_link_ksettings * cmd,int maxspeed,int porttype)6117 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6118 int maxspeed, int porttype)
6119 {
6120 ethtool_link_ksettings_zero_link_mode(cmd, supported);
6121 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6122 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6123
6124 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6125 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6126
6127 switch (porttype) {
6128 case PORT_TP:
6129 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6130 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6131 break;
6132 case PORT_FIBRE:
6133 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6134 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6135 break;
6136 default:
6137 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6138 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6139 WARN_ON_ONCE(1);
6140 }
6141
6142 /* fallthrough from high to low, to select all legal speeds: */
6143 switch (maxspeed) {
6144 case SPEED_10000:
6145 ethtool_link_ksettings_add_link_mode(cmd, supported,
6146 10000baseT_Full);
6147 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6148 10000baseT_Full);
6149 case SPEED_1000:
6150 ethtool_link_ksettings_add_link_mode(cmd, supported,
6151 1000baseT_Full);
6152 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6153 1000baseT_Full);
6154 ethtool_link_ksettings_add_link_mode(cmd, supported,
6155 1000baseT_Half);
6156 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6157 1000baseT_Half);
6158 case SPEED_100:
6159 ethtool_link_ksettings_add_link_mode(cmd, supported,
6160 100baseT_Full);
6161 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6162 100baseT_Full);
6163 ethtool_link_ksettings_add_link_mode(cmd, supported,
6164 100baseT_Half);
6165 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6166 100baseT_Half);
6167 case SPEED_10:
6168 ethtool_link_ksettings_add_link_mode(cmd, supported,
6169 10baseT_Full);
6170 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6171 10baseT_Full);
6172 ethtool_link_ksettings_add_link_mode(cmd, supported,
6173 10baseT_Half);
6174 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6175 10baseT_Half);
6176 /* end fallthrough */
6177 break;
6178 default:
6179 ethtool_link_ksettings_add_link_mode(cmd, supported,
6180 10baseT_Full);
6181 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6182 10baseT_Full);
6183 ethtool_link_ksettings_add_link_mode(cmd, supported,
6184 10baseT_Half);
6185 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6186 10baseT_Half);
6187 WARN_ON_ONCE(1);
6188 }
6189 }
6190
qeth_core_ethtool_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)6191 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6192 struct ethtool_link_ksettings *cmd)
6193 {
6194 struct qeth_card *card = netdev->ml_priv;
6195 enum qeth_link_types link_type;
6196 struct carrier_info carrier_info;
6197 int rc;
6198
6199 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6200 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6201 else
6202 link_type = card->info.link_type;
6203
6204 cmd->base.duplex = DUPLEX_FULL;
6205 cmd->base.autoneg = AUTONEG_ENABLE;
6206 cmd->base.phy_address = 0;
6207 cmd->base.mdio_support = 0;
6208 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6209 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6210
6211 switch (link_type) {
6212 case QETH_LINK_TYPE_FAST_ETH:
6213 case QETH_LINK_TYPE_LANE_ETH100:
6214 cmd->base.speed = SPEED_100;
6215 cmd->base.port = PORT_TP;
6216 break;
6217 case QETH_LINK_TYPE_GBIT_ETH:
6218 case QETH_LINK_TYPE_LANE_ETH1000:
6219 cmd->base.speed = SPEED_1000;
6220 cmd->base.port = PORT_FIBRE;
6221 break;
6222 case QETH_LINK_TYPE_10GBIT_ETH:
6223 cmd->base.speed = SPEED_10000;
6224 cmd->base.port = PORT_FIBRE;
6225 break;
6226 default:
6227 cmd->base.speed = SPEED_10;
6228 cmd->base.port = PORT_TP;
6229 }
6230 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6231
6232 /* Check if we can obtain more accurate information. */
6233 /* If QUERY_CARD_INFO command is not supported or fails, */
6234 /* just return the heuristics that was filled above. */
6235 if (!qeth_card_hw_is_reachable(card))
6236 return -ENODEV;
6237 rc = qeth_query_card_info(card, &carrier_info);
6238 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6239 return 0;
6240 if (rc) /* report error from the hardware operation */
6241 return rc;
6242 /* on success, fill in the information got from the hardware */
6243
6244 netdev_dbg(netdev,
6245 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6246 carrier_info.card_type,
6247 carrier_info.port_mode,
6248 carrier_info.port_speed);
6249
6250 /* Update attributes for which we've obtained more authoritative */
6251 /* information, leave the rest the way they where filled above. */
6252 switch (carrier_info.card_type) {
6253 case CARD_INFO_TYPE_1G_COPPER_A:
6254 case CARD_INFO_TYPE_1G_COPPER_B:
6255 cmd->base.port = PORT_TP;
6256 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6257 break;
6258 case CARD_INFO_TYPE_1G_FIBRE_A:
6259 case CARD_INFO_TYPE_1G_FIBRE_B:
6260 cmd->base.port = PORT_FIBRE;
6261 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6262 break;
6263 case CARD_INFO_TYPE_10G_FIBRE_A:
6264 case CARD_INFO_TYPE_10G_FIBRE_B:
6265 cmd->base.port = PORT_FIBRE;
6266 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6267 break;
6268 }
6269
6270 switch (carrier_info.port_mode) {
6271 case CARD_INFO_PORTM_FULLDUPLEX:
6272 cmd->base.duplex = DUPLEX_FULL;
6273 break;
6274 case CARD_INFO_PORTM_HALFDUPLEX:
6275 cmd->base.duplex = DUPLEX_HALF;
6276 break;
6277 }
6278
6279 switch (carrier_info.port_speed) {
6280 case CARD_INFO_PORTS_10M:
6281 cmd->base.speed = SPEED_10;
6282 break;
6283 case CARD_INFO_PORTS_100M:
6284 cmd->base.speed = SPEED_100;
6285 break;
6286 case CARD_INFO_PORTS_1G:
6287 cmd->base.speed = SPEED_1000;
6288 break;
6289 case CARD_INFO_PORTS_10G:
6290 cmd->base.speed = SPEED_10000;
6291 break;
6292 }
6293
6294 return 0;
6295 }
6296 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6297
6298 /* Callback to handle checksum offload command reply from OSA card.
6299 * Verify that required features have been enabled on the card.
6300 * Return error in hdr->return_code as this value is checked by caller.
6301 *
6302 * Always returns zero to indicate no further messages from the OSA card.
6303 */
qeth_ipa_checksum_run_cmd_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)6304 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6305 struct qeth_reply *reply,
6306 unsigned long data)
6307 {
6308 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6309 struct qeth_checksum_cmd *chksum_cb =
6310 (struct qeth_checksum_cmd *)reply->param;
6311
6312 QETH_CARD_TEXT(card, 4, "chkdoccb");
6313 if (qeth_setassparms_inspect_rc(cmd))
6314 return 0;
6315
6316 memset(chksum_cb, 0, sizeof(*chksum_cb));
6317 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6318 chksum_cb->supported =
6319 cmd->data.setassparms.data.chksum.supported;
6320 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6321 }
6322 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6323 chksum_cb->supported =
6324 cmd->data.setassparms.data.chksum.supported;
6325 chksum_cb->enabled =
6326 cmd->data.setassparms.data.chksum.enabled;
6327 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6328 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6329 }
6330 return 0;
6331 }
6332
6333 /* Send command to OSA card and check results. */
qeth_ipa_checksum_run_cmd(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code,long data,struct qeth_checksum_cmd * chksum_cb)6334 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6335 enum qeth_ipa_funcs ipa_func,
6336 __u16 cmd_code, long data,
6337 struct qeth_checksum_cmd *chksum_cb)
6338 {
6339 struct qeth_cmd_buffer *iob;
6340 int rc = -ENOMEM;
6341
6342 QETH_CARD_TEXT(card, 4, "chkdocmd");
6343 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6344 sizeof(__u32), QETH_PROT_IPV4);
6345 if (iob)
6346 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6347 qeth_ipa_checksum_run_cmd_cb,
6348 chksum_cb);
6349 return rc;
6350 }
6351
qeth_send_checksum_on(struct qeth_card * card,int cstype)6352 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6353 {
6354 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6355 QETH_IPA_CHECKSUM_UDP |
6356 QETH_IPA_CHECKSUM_TCP;
6357 struct qeth_checksum_cmd chksum_cb;
6358 int rc;
6359
6360 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6361 &chksum_cb);
6362 if (!rc) {
6363 if ((required_features & chksum_cb.supported) !=
6364 required_features)
6365 rc = -EIO;
6366 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6367 cstype == IPA_INBOUND_CHECKSUM)
6368 dev_warn(&card->gdev->dev,
6369 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6370 QETH_CARD_IFNAME(card));
6371 }
6372 if (rc) {
6373 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6374 dev_warn(&card->gdev->dev,
6375 "Starting HW checksumming for %s failed, using SW checksumming\n",
6376 QETH_CARD_IFNAME(card));
6377 return rc;
6378 }
6379 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6380 chksum_cb.supported, &chksum_cb);
6381 if (!rc) {
6382 if ((required_features & chksum_cb.enabled) !=
6383 required_features)
6384 rc = -EIO;
6385 }
6386 if (rc) {
6387 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6388 dev_warn(&card->gdev->dev,
6389 "Enabling HW checksumming for %s failed, using SW checksumming\n",
6390 QETH_CARD_IFNAME(card));
6391 return rc;
6392 }
6393
6394 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6395 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6396 return 0;
6397 }
6398
qeth_set_ipa_csum(struct qeth_card * card,int on,int cstype)6399 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6400 {
6401 int rc = (on) ? qeth_send_checksum_on(card, cstype)
6402 : qeth_send_simple_setassparms(card, cstype,
6403 IPA_CMD_ASS_STOP, 0);
6404 return rc ? -EIO : 0;
6405 }
6406
qeth_set_ipa_tso(struct qeth_card * card,int on)6407 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6408 {
6409 int rc;
6410
6411 QETH_CARD_TEXT(card, 3, "sttso");
6412
6413 if (on) {
6414 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6415 IPA_CMD_ASS_START, 0);
6416 if (rc) {
6417 dev_warn(&card->gdev->dev,
6418 "Starting outbound TCP segmentation offload for %s failed\n",
6419 QETH_CARD_IFNAME(card));
6420 return -EIO;
6421 }
6422 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6423 } else {
6424 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6425 IPA_CMD_ASS_STOP, 0);
6426 }
6427 return rc;
6428 }
6429
6430 /* try to restore device features on a device after recovery */
qeth_recover_features(struct net_device * dev)6431 int qeth_recover_features(struct net_device *dev)
6432 {
6433 struct qeth_card *card = dev->ml_priv;
6434 netdev_features_t recover = dev->features;
6435
6436 if (recover & NETIF_F_IP_CSUM) {
6437 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM))
6438 recover ^= NETIF_F_IP_CSUM;
6439 }
6440 if (recover & NETIF_F_RXCSUM) {
6441 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM))
6442 recover ^= NETIF_F_RXCSUM;
6443 }
6444 if (recover & NETIF_F_TSO) {
6445 if (qeth_set_ipa_tso(card, 1))
6446 recover ^= NETIF_F_TSO;
6447 }
6448
6449 if (recover == dev->features)
6450 return 0;
6451
6452 dev_warn(&card->gdev->dev,
6453 "Device recovery failed to restore all offload features\n");
6454 dev->features = recover;
6455 return -EIO;
6456 }
6457 EXPORT_SYMBOL_GPL(qeth_recover_features);
6458
qeth_set_features(struct net_device * dev,netdev_features_t features)6459 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6460 {
6461 struct qeth_card *card = dev->ml_priv;
6462 netdev_features_t changed = dev->features ^ features;
6463 int rc = 0;
6464
6465 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6466 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6467
6468 if ((changed & NETIF_F_IP_CSUM)) {
6469 rc = qeth_set_ipa_csum(card,
6470 features & NETIF_F_IP_CSUM ? 1 : 0,
6471 IPA_OUTBOUND_CHECKSUM);
6472 if (rc)
6473 changed ^= NETIF_F_IP_CSUM;
6474 }
6475 if ((changed & NETIF_F_RXCSUM)) {
6476 rc = qeth_set_ipa_csum(card,
6477 features & NETIF_F_RXCSUM ? 1 : 0,
6478 IPA_INBOUND_CHECKSUM);
6479 if (rc)
6480 changed ^= NETIF_F_RXCSUM;
6481 }
6482 if ((changed & NETIF_F_TSO)) {
6483 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6484 if (rc)
6485 changed ^= NETIF_F_TSO;
6486 }
6487
6488 /* everything changed successfully? */
6489 if ((dev->features ^ features) == changed)
6490 return 0;
6491 /* something went wrong. save changed features and return error */
6492 dev->features ^= changed;
6493 return -EIO;
6494 }
6495 EXPORT_SYMBOL_GPL(qeth_set_features);
6496
qeth_fix_features(struct net_device * dev,netdev_features_t features)6497 netdev_features_t qeth_fix_features(struct net_device *dev,
6498 netdev_features_t features)
6499 {
6500 struct qeth_card *card = dev->ml_priv;
6501
6502 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6503 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6504 features &= ~NETIF_F_IP_CSUM;
6505 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6506 features &= ~NETIF_F_RXCSUM;
6507 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6508 features &= ~NETIF_F_TSO;
6509 /* if the card isn't up, remove features that require hw changes */
6510 if (card->state == CARD_STATE_DOWN ||
6511 card->state == CARD_STATE_RECOVER)
6512 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
6513 NETIF_F_TSO);
6514 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6515 return features;
6516 }
6517 EXPORT_SYMBOL_GPL(qeth_fix_features);
6518
qeth_features_check(struct sk_buff * skb,struct net_device * dev,netdev_features_t features)6519 netdev_features_t qeth_features_check(struct sk_buff *skb,
6520 struct net_device *dev,
6521 netdev_features_t features)
6522 {
6523 /* GSO segmentation builds skbs with
6524 * a (small) linear part for the headers, and
6525 * page frags for the data.
6526 * Compared to a linear skb, the header-only part consumes an
6527 * additional buffer element. This reduces buffer utilization, and
6528 * hurts throughput. So compress small segments into one element.
6529 */
6530 if (netif_needs_gso(skb, features)) {
6531 /* match skb_segment(): */
6532 unsigned int doffset = skb->data - skb_mac_header(skb);
6533 unsigned int hsize = skb_shinfo(skb)->gso_size;
6534 unsigned int hroom = skb_headroom(skb);
6535
6536 /* linearize only if resulting skb allocations are order-0: */
6537 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6538 features &= ~NETIF_F_SG;
6539 }
6540
6541 return vlan_features_check(skb, features);
6542 }
6543 EXPORT_SYMBOL_GPL(qeth_features_check);
6544
qeth_core_init(void)6545 static int __init qeth_core_init(void)
6546 {
6547 int rc;
6548
6549 pr_info("loading core functions\n");
6550 INIT_LIST_HEAD(&qeth_core_card_list.list);
6551 INIT_LIST_HEAD(&qeth_dbf_list);
6552 rwlock_init(&qeth_core_card_list.rwlock);
6553 mutex_init(&qeth_mod_mutex);
6554
6555 qeth_wq = create_singlethread_workqueue("qeth_wq");
6556
6557 rc = qeth_register_dbf_views();
6558 if (rc)
6559 goto out_err;
6560 qeth_core_root_dev = root_device_register("qeth");
6561 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6562 if (rc)
6563 goto register_err;
6564 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6565 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6566 if (!qeth_core_header_cache) {
6567 rc = -ENOMEM;
6568 goto slab_err;
6569 }
6570 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6571 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6572 if (!qeth_qdio_outbuf_cache) {
6573 rc = -ENOMEM;
6574 goto cqslab_err;
6575 }
6576 rc = ccw_driver_register(&qeth_ccw_driver);
6577 if (rc)
6578 goto ccw_err;
6579 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6580 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6581 if (rc)
6582 goto ccwgroup_err;
6583
6584 return 0;
6585
6586 ccwgroup_err:
6587 ccw_driver_unregister(&qeth_ccw_driver);
6588 ccw_err:
6589 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6590 cqslab_err:
6591 kmem_cache_destroy(qeth_core_header_cache);
6592 slab_err:
6593 root_device_unregister(qeth_core_root_dev);
6594 register_err:
6595 qeth_unregister_dbf_views();
6596 out_err:
6597 pr_err("Initializing the qeth device driver failed\n");
6598 return rc;
6599 }
6600
qeth_core_exit(void)6601 static void __exit qeth_core_exit(void)
6602 {
6603 qeth_clear_dbf_list();
6604 destroy_workqueue(qeth_wq);
6605 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6606 ccw_driver_unregister(&qeth_ccw_driver);
6607 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6608 kmem_cache_destroy(qeth_core_header_cache);
6609 root_device_unregister(qeth_core_root_dev);
6610 qeth_unregister_dbf_views();
6611 pr_info("core functions removed\n");
6612 }
6613
6614 module_init(qeth_core_init);
6615 module_exit(qeth_core_exit);
6616 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6617 MODULE_DESCRIPTION("qeth core functions");
6618 MODULE_LICENSE("GPL");
6619