1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13 #include <linux/compat.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/ip.h>
20 #include <linux/tcp.h>
21 #include <linux/mii.h>
22 #include <linux/kthread.h>
23 #include <linux/slab.h>
24 #include <linux/if_vlan.h>
25 #include <linux/netdevice.h>
26 #include <linux/netdev_features.h>
27 #include <linux/skbuff.h>
28 #include <linux/vmalloc.h>
29
30 #include <net/iucv/af_iucv.h>
31 #include <net/dsfield.h>
32
33 #include <asm/ebcdic.h>
34 #include <asm/chpid.h>
35 #include <asm/io.h>
36 #include <asm/sysinfo.h>
37 #include <asm/diag.h>
38 #include <asm/cio.h>
39 #include <asm/ccwdev.h>
40 #include <asm/cpcmd.h>
41
42 #include "qeth_core.h"
43
44 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
45 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
46 /* N P A M L V H */
47 [QETH_DBF_SETUP] = {"qeth_setup",
48 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
49 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
50 &debug_sprintf_view, NULL},
51 [QETH_DBF_CTRL] = {"qeth_control",
52 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
53 };
54 EXPORT_SYMBOL_GPL(qeth_dbf);
55
56 struct qeth_card_list_struct qeth_core_card_list;
57 EXPORT_SYMBOL_GPL(qeth_core_card_list);
58 struct kmem_cache *qeth_core_header_cache;
59 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
60 static struct kmem_cache *qeth_qdio_outbuf_cache;
61
62 static struct device *qeth_core_root_dev;
63 static struct lock_class_key qdio_out_skb_queue_key;
64 static struct mutex qeth_mod_mutex;
65
66 static void qeth_send_control_data_cb(struct qeth_channel *,
67 struct qeth_cmd_buffer *);
68 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
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 int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
77
78 struct workqueue_struct *qeth_wq;
79 EXPORT_SYMBOL_GPL(qeth_wq);
80
qeth_card_hw_is_reachable(struct qeth_card * card)81 int qeth_card_hw_is_reachable(struct qeth_card *card)
82 {
83 return (card->state == CARD_STATE_SOFTSETUP) ||
84 (card->state == CARD_STATE_UP);
85 }
86 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
87
qeth_close_dev_handler(struct work_struct * work)88 static void qeth_close_dev_handler(struct work_struct *work)
89 {
90 struct qeth_card *card;
91
92 card = container_of(work, struct qeth_card, close_dev_work);
93 QETH_CARD_TEXT(card, 2, "cldevhdl");
94 rtnl_lock();
95 dev_close(card->dev);
96 rtnl_unlock();
97 ccwgroup_set_offline(card->gdev);
98 }
99
qeth_close_dev(struct qeth_card * card)100 void qeth_close_dev(struct qeth_card *card)
101 {
102 QETH_CARD_TEXT(card, 2, "cldevsubm");
103 queue_work(qeth_wq, &card->close_dev_work);
104 }
105 EXPORT_SYMBOL_GPL(qeth_close_dev);
106
qeth_get_cardname(struct qeth_card * card)107 static const char *qeth_get_cardname(struct qeth_card *card)
108 {
109 if (card->info.guestlan) {
110 switch (card->info.type) {
111 case QETH_CARD_TYPE_OSD:
112 return " Virtual NIC QDIO";
113 case QETH_CARD_TYPE_IQD:
114 return " Virtual NIC Hiper";
115 case QETH_CARD_TYPE_OSM:
116 return " Virtual NIC QDIO - OSM";
117 case QETH_CARD_TYPE_OSX:
118 return " Virtual NIC QDIO - OSX";
119 default:
120 return " unknown";
121 }
122 } else {
123 switch (card->info.type) {
124 case QETH_CARD_TYPE_OSD:
125 return " OSD Express";
126 case QETH_CARD_TYPE_IQD:
127 return " HiperSockets";
128 case QETH_CARD_TYPE_OSN:
129 return " OSN QDIO";
130 case QETH_CARD_TYPE_OSM:
131 return " OSM QDIO";
132 case QETH_CARD_TYPE_OSX:
133 return " OSX QDIO";
134 default:
135 return " unknown";
136 }
137 }
138 return " n/a";
139 }
140
141 /* max length to be returned: 14 */
qeth_get_cardname_short(struct qeth_card * card)142 const char *qeth_get_cardname_short(struct qeth_card *card)
143 {
144 if (card->info.guestlan) {
145 switch (card->info.type) {
146 case QETH_CARD_TYPE_OSD:
147 return "Virt.NIC QDIO";
148 case QETH_CARD_TYPE_IQD:
149 return "Virt.NIC Hiper";
150 case QETH_CARD_TYPE_OSM:
151 return "Virt.NIC OSM";
152 case QETH_CARD_TYPE_OSX:
153 return "Virt.NIC OSX";
154 default:
155 return "unknown";
156 }
157 } else {
158 switch (card->info.type) {
159 case QETH_CARD_TYPE_OSD:
160 switch (card->info.link_type) {
161 case QETH_LINK_TYPE_FAST_ETH:
162 return "OSD_100";
163 case QETH_LINK_TYPE_HSTR:
164 return "HSTR";
165 case QETH_LINK_TYPE_GBIT_ETH:
166 return "OSD_1000";
167 case QETH_LINK_TYPE_10GBIT_ETH:
168 return "OSD_10GIG";
169 case QETH_LINK_TYPE_LANE_ETH100:
170 return "OSD_FE_LANE";
171 case QETH_LINK_TYPE_LANE_TR:
172 return "OSD_TR_LANE";
173 case QETH_LINK_TYPE_LANE_ETH1000:
174 return "OSD_GbE_LANE";
175 case QETH_LINK_TYPE_LANE:
176 return "OSD_ATM_LANE";
177 default:
178 return "OSD_Express";
179 }
180 case QETH_CARD_TYPE_IQD:
181 return "HiperSockets";
182 case QETH_CARD_TYPE_OSN:
183 return "OSN";
184 case QETH_CARD_TYPE_OSM:
185 return "OSM_1000";
186 case QETH_CARD_TYPE_OSX:
187 return "OSX_10GIG";
188 default:
189 return "unknown";
190 }
191 }
192 return "n/a";
193 }
194
qeth_set_recovery_task(struct qeth_card * card)195 void qeth_set_recovery_task(struct qeth_card *card)
196 {
197 card->recovery_task = current;
198 }
199 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
200
qeth_clear_recovery_task(struct qeth_card * card)201 void qeth_clear_recovery_task(struct qeth_card *card)
202 {
203 card->recovery_task = NULL;
204 }
205 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
206
qeth_is_recovery_task(const struct qeth_card * card)207 static bool qeth_is_recovery_task(const struct qeth_card *card)
208 {
209 return card->recovery_task == current;
210 }
211
qeth_set_allowed_threads(struct qeth_card * card,unsigned long threads,int clear_start_mask)212 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
213 int clear_start_mask)
214 {
215 unsigned long flags;
216
217 spin_lock_irqsave(&card->thread_mask_lock, flags);
218 card->thread_allowed_mask = threads;
219 if (clear_start_mask)
220 card->thread_start_mask &= threads;
221 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
222 wake_up(&card->wait_q);
223 }
224 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
225
qeth_threads_running(struct qeth_card * card,unsigned long threads)226 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
227 {
228 unsigned long flags;
229 int rc = 0;
230
231 spin_lock_irqsave(&card->thread_mask_lock, flags);
232 rc = (card->thread_running_mask & threads);
233 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
234 return rc;
235 }
236 EXPORT_SYMBOL_GPL(qeth_threads_running);
237
qeth_wait_for_threads(struct qeth_card * card,unsigned long threads)238 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
239 {
240 if (qeth_is_recovery_task(card))
241 return 0;
242 return wait_event_interruptible(card->wait_q,
243 qeth_threads_running(card, threads) == 0);
244 }
245 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
246
qeth_clear_working_pool_list(struct qeth_card * card)247 void qeth_clear_working_pool_list(struct qeth_card *card)
248 {
249 struct qeth_buffer_pool_entry *pool_entry, *tmp;
250
251 QETH_CARD_TEXT(card, 5, "clwrklst");
252 list_for_each_entry_safe(pool_entry, tmp,
253 &card->qdio.in_buf_pool.entry_list, list){
254 list_del(&pool_entry->list);
255 }
256 }
257 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
258
qeth_alloc_buffer_pool(struct qeth_card * card)259 static int qeth_alloc_buffer_pool(struct qeth_card *card)
260 {
261 struct qeth_buffer_pool_entry *pool_entry;
262 void *ptr;
263 int i, j;
264
265 QETH_CARD_TEXT(card, 5, "alocpool");
266 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
267 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
268 if (!pool_entry) {
269 qeth_free_buffer_pool(card);
270 return -ENOMEM;
271 }
272 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
273 ptr = (void *) __get_free_page(GFP_KERNEL);
274 if (!ptr) {
275 while (j > 0)
276 free_page((unsigned long)
277 pool_entry->elements[--j]);
278 kfree(pool_entry);
279 qeth_free_buffer_pool(card);
280 return -ENOMEM;
281 }
282 pool_entry->elements[j] = ptr;
283 }
284 list_add(&pool_entry->init_list,
285 &card->qdio.init_pool.entry_list);
286 }
287 return 0;
288 }
289
qeth_realloc_buffer_pool(struct qeth_card * card,int bufcnt)290 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
291 {
292 QETH_CARD_TEXT(card, 2, "realcbp");
293
294 if ((card->state != CARD_STATE_DOWN) &&
295 (card->state != CARD_STATE_RECOVER))
296 return -EPERM;
297
298 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
299 qeth_clear_working_pool_list(card);
300 qeth_free_buffer_pool(card);
301 card->qdio.in_buf_pool.buf_count = bufcnt;
302 card->qdio.init_pool.buf_count = bufcnt;
303 return qeth_alloc_buffer_pool(card);
304 }
305 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
306
qeth_free_qdio_queue(struct qeth_qdio_q * q)307 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
308 {
309 if (!q)
310 return;
311
312 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
313 kfree(q);
314 }
315
qeth_alloc_qdio_queue(void)316 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
317 {
318 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
319 int i;
320
321 if (!q)
322 return NULL;
323
324 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
325 kfree(q);
326 return NULL;
327 }
328
329 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
330 q->bufs[i].buffer = q->qdio_bufs[i];
331
332 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
333 return q;
334 }
335
qeth_cq_init(struct qeth_card * card)336 static int qeth_cq_init(struct qeth_card *card)
337 {
338 int rc;
339
340 if (card->options.cq == QETH_CQ_ENABLED) {
341 QETH_DBF_TEXT(SETUP, 2, "cqinit");
342 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
343 QDIO_MAX_BUFFERS_PER_Q);
344 card->qdio.c_q->next_buf_to_init = 127;
345 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
346 card->qdio.no_in_queues - 1, 0,
347 127);
348 if (rc) {
349 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
350 goto out;
351 }
352 }
353 rc = 0;
354 out:
355 return rc;
356 }
357
qeth_alloc_cq(struct qeth_card * card)358 static int qeth_alloc_cq(struct qeth_card *card)
359 {
360 int rc;
361
362 if (card->options.cq == QETH_CQ_ENABLED) {
363 int i;
364 struct qdio_outbuf_state *outbuf_states;
365
366 QETH_DBF_TEXT(SETUP, 2, "cqon");
367 card->qdio.c_q = qeth_alloc_qdio_queue();
368 if (!card->qdio.c_q) {
369 rc = -1;
370 goto kmsg_out;
371 }
372 card->qdio.no_in_queues = 2;
373 card->qdio.out_bufstates =
374 kcalloc(card->qdio.no_out_queues *
375 QDIO_MAX_BUFFERS_PER_Q,
376 sizeof(struct qdio_outbuf_state),
377 GFP_KERNEL);
378 outbuf_states = card->qdio.out_bufstates;
379 if (outbuf_states == NULL) {
380 rc = -1;
381 goto free_cq_out;
382 }
383 for (i = 0; i < card->qdio.no_out_queues; ++i) {
384 card->qdio.out_qs[i]->bufstates = outbuf_states;
385 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
386 }
387 } else {
388 QETH_DBF_TEXT(SETUP, 2, "nocq");
389 card->qdio.c_q = NULL;
390 card->qdio.no_in_queues = 1;
391 }
392 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
393 rc = 0;
394 out:
395 return rc;
396 free_cq_out:
397 qeth_free_qdio_queue(card->qdio.c_q);
398 card->qdio.c_q = NULL;
399 kmsg_out:
400 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
401 goto out;
402 }
403
qeth_free_cq(struct qeth_card * card)404 static void qeth_free_cq(struct qeth_card *card)
405 {
406 if (card->qdio.c_q) {
407 --card->qdio.no_in_queues;
408 qeth_free_qdio_queue(card->qdio.c_q);
409 card->qdio.c_q = NULL;
410 }
411 kfree(card->qdio.out_bufstates);
412 card->qdio.out_bufstates = NULL;
413 }
414
qeth_compute_cq_notification(int sbalf15,int delayed)415 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
416 int delayed)
417 {
418 enum iucv_tx_notify n;
419
420 switch (sbalf15) {
421 case 0:
422 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
423 break;
424 case 4:
425 case 16:
426 case 17:
427 case 18:
428 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
429 TX_NOTIFY_UNREACHABLE;
430 break;
431 default:
432 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
433 TX_NOTIFY_GENERALERROR;
434 break;
435 }
436
437 return n;
438 }
439
qeth_cleanup_handled_pending(struct qeth_qdio_out_q * q,int bidx,int forced_cleanup)440 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
441 int forced_cleanup)
442 {
443 if (q->card->options.cq != QETH_CQ_ENABLED)
444 return;
445
446 if (q->bufs[bidx]->next_pending != NULL) {
447 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
448 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
449
450 while (c) {
451 if (forced_cleanup ||
452 atomic_read(&c->state) ==
453 QETH_QDIO_BUF_HANDLED_DELAYED) {
454 struct qeth_qdio_out_buffer *f = c;
455 QETH_CARD_TEXT(f->q->card, 5, "fp");
456 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
457 /* release here to avoid interleaving between
458 outbound tasklet and inbound tasklet
459 regarding notifications and lifecycle */
460 qeth_release_skbs(c);
461
462 c = f->next_pending;
463 WARN_ON_ONCE(head->next_pending != f);
464 head->next_pending = c;
465 kmem_cache_free(qeth_qdio_outbuf_cache, f);
466 } else {
467 head = c;
468 c = c->next_pending;
469 }
470
471 }
472 }
473 }
474
475
qeth_qdio_handle_aob(struct qeth_card * card,unsigned long phys_aob_addr)476 static void qeth_qdio_handle_aob(struct qeth_card *card,
477 unsigned long phys_aob_addr)
478 {
479 struct qaob *aob;
480 struct qeth_qdio_out_buffer *buffer;
481 enum iucv_tx_notify notification;
482 unsigned int i;
483
484 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
485 QETH_CARD_TEXT(card, 5, "haob");
486 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
487 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
488 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
489
490 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
491 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
492 notification = TX_NOTIFY_OK;
493 } else {
494 WARN_ON_ONCE(atomic_read(&buffer->state) !=
495 QETH_QDIO_BUF_PENDING);
496 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
497 notification = TX_NOTIFY_DELAYED_OK;
498 }
499
500 if (aob->aorc != 0) {
501 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
502 notification = qeth_compute_cq_notification(aob->aorc, 1);
503 }
504 qeth_notify_skbs(buffer->q, buffer, notification);
505
506 /* Free dangling allocations. The attached skbs are handled by
507 * qeth_cleanup_handled_pending().
508 */
509 for (i = 0;
510 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
511 i++) {
512 if (aob->sba[i] && buffer->is_header[i])
513 kmem_cache_free(qeth_core_header_cache,
514 (void *) aob->sba[i]);
515 }
516 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
517
518 qdio_release_aob(aob);
519 }
520
qeth_is_cq(struct qeth_card * card,unsigned int queue)521 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
522 {
523 return card->options.cq == QETH_CQ_ENABLED &&
524 card->qdio.c_q != NULL &&
525 queue != 0 &&
526 queue == card->qdio.no_in_queues - 1;
527 }
528
qeth_setup_ccw(struct ccw1 * ccw,u8 cmd_code,u32 len,void * data)529 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data)
530 {
531 ccw->cmd_code = cmd_code;
532 ccw->flags = CCW_FLAG_SLI;
533 ccw->count = len;
534 ccw->cda = (__u32) __pa(data);
535 }
536
__qeth_issue_next_read(struct qeth_card * card)537 static int __qeth_issue_next_read(struct qeth_card *card)
538 {
539 struct qeth_channel *channel = &card->read;
540 struct qeth_cmd_buffer *iob;
541 int rc;
542
543 QETH_CARD_TEXT(card, 5, "issnxrd");
544 if (channel->state != CH_STATE_UP)
545 return -EIO;
546 iob = qeth_get_buffer(channel);
547 if (!iob) {
548 dev_warn(&card->gdev->dev, "The qeth device driver "
549 "failed to recover an error on the device\n");
550 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
551 "available\n", dev_name(&card->gdev->dev));
552 return -ENOMEM;
553 }
554 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
555 QETH_CARD_TEXT(card, 6, "noirqpnd");
556 rc = ccw_device_start(channel->ccwdev, channel->ccw,
557 (addr_t) iob, 0, 0);
558 if (rc) {
559 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
560 "rc=%i\n", dev_name(&card->gdev->dev), rc);
561 atomic_set(&channel->irq_pending, 0);
562 qeth_release_buffer(channel, iob);
563 card->read_or_write_problem = 1;
564 qeth_schedule_recovery(card);
565 wake_up(&card->wait_q);
566 }
567 return rc;
568 }
569
qeth_issue_next_read(struct qeth_card * card)570 static int qeth_issue_next_read(struct qeth_card *card)
571 {
572 int ret;
573
574 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
575 ret = __qeth_issue_next_read(card);
576 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
577
578 return ret;
579 }
580
qeth_alloc_reply(struct qeth_card * card)581 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
582 {
583 struct qeth_reply *reply;
584
585 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
586 if (reply) {
587 refcount_set(&reply->refcnt, 1);
588 atomic_set(&reply->received, 0);
589 reply->card = card;
590 }
591 return reply;
592 }
593
qeth_get_reply(struct qeth_reply * reply)594 static void qeth_get_reply(struct qeth_reply *reply)
595 {
596 refcount_inc(&reply->refcnt);
597 }
598
qeth_put_reply(struct qeth_reply * reply)599 static void qeth_put_reply(struct qeth_reply *reply)
600 {
601 if (refcount_dec_and_test(&reply->refcnt))
602 kfree(reply);
603 }
604
qeth_issue_ipa_msg(struct qeth_ipa_cmd * cmd,int rc,struct qeth_card * card)605 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
606 struct qeth_card *card)
607 {
608 const char *ipa_name;
609 int com = cmd->hdr.command;
610 ipa_name = qeth_get_ipa_cmd_name(com);
611 if (rc)
612 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
613 "x%X \"%s\"\n",
614 ipa_name, com, dev_name(&card->gdev->dev),
615 QETH_CARD_IFNAME(card), rc,
616 qeth_get_ipa_msg(rc));
617 else
618 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
619 ipa_name, com, dev_name(&card->gdev->dev),
620 QETH_CARD_IFNAME(card));
621 }
622
qeth_check_ipa_data(struct qeth_card * card,struct qeth_cmd_buffer * iob)623 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
624 struct qeth_cmd_buffer *iob)
625 {
626 struct qeth_ipa_cmd *cmd = NULL;
627
628 QETH_CARD_TEXT(card, 5, "chkipad");
629 if (IS_IPA(iob->data)) {
630 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
631 if (IS_IPA_REPLY(cmd)) {
632 if (cmd->hdr.command != IPA_CMD_SETCCID &&
633 cmd->hdr.command != IPA_CMD_DELCCID &&
634 cmd->hdr.command != IPA_CMD_MODCCID &&
635 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
636 qeth_issue_ipa_msg(cmd,
637 cmd->hdr.return_code, card);
638 return cmd;
639 } else {
640 switch (cmd->hdr.command) {
641 case IPA_CMD_STOPLAN:
642 if (cmd->hdr.return_code ==
643 IPA_RC_VEPA_TO_VEB_TRANSITION) {
644 dev_err(&card->gdev->dev,
645 "Interface %s is down because the "
646 "adjacent port is no longer in "
647 "reflective relay mode\n",
648 QETH_CARD_IFNAME(card));
649 qeth_close_dev(card);
650 } else {
651 dev_warn(&card->gdev->dev,
652 "The link for interface %s on CHPID"
653 " 0x%X failed\n",
654 QETH_CARD_IFNAME(card),
655 card->info.chpid);
656 qeth_issue_ipa_msg(cmd,
657 cmd->hdr.return_code, card);
658 }
659 card->lan_online = 0;
660 netif_carrier_off(card->dev);
661 return NULL;
662 case IPA_CMD_STARTLAN:
663 dev_info(&card->gdev->dev,
664 "The link for %s on CHPID 0x%X has"
665 " been restored\n",
666 QETH_CARD_IFNAME(card),
667 card->info.chpid);
668 netif_carrier_on(card->dev);
669 card->lan_online = 1;
670 if (card->info.hwtrap)
671 card->info.hwtrap = 2;
672 qeth_schedule_recovery(card);
673 return NULL;
674 case IPA_CMD_SETBRIDGEPORT_IQD:
675 case IPA_CMD_SETBRIDGEPORT_OSA:
676 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
677 if (card->discipline->control_event_handler
678 (card, cmd))
679 return cmd;
680 else
681 return NULL;
682 case IPA_CMD_MODCCID:
683 return cmd;
684 case IPA_CMD_REGISTER_LOCAL_ADDR:
685 QETH_CARD_TEXT(card, 3, "irla");
686 break;
687 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
688 QETH_CARD_TEXT(card, 3, "urla");
689 break;
690 default:
691 QETH_DBF_MESSAGE(2, "Received data is IPA "
692 "but not a reply!\n");
693 break;
694 }
695 }
696 }
697 return cmd;
698 }
699
qeth_clear_ipacmd_list(struct qeth_card * card)700 void qeth_clear_ipacmd_list(struct qeth_card *card)
701 {
702 struct qeth_reply *reply, *r;
703 unsigned long flags;
704
705 QETH_CARD_TEXT(card, 4, "clipalst");
706
707 spin_lock_irqsave(&card->lock, flags);
708 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
709 qeth_get_reply(reply);
710 reply->rc = -EIO;
711 atomic_inc(&reply->received);
712 list_del_init(&reply->list);
713 wake_up(&reply->wait_q);
714 qeth_put_reply(reply);
715 }
716 spin_unlock_irqrestore(&card->lock, flags);
717 }
718 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
719
qeth_check_idx_response(struct qeth_card * card,unsigned char * buffer)720 static int qeth_check_idx_response(struct qeth_card *card,
721 unsigned char *buffer)
722 {
723 if (!buffer)
724 return 0;
725
726 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
727 if ((buffer[2] & 0xc0) == 0xc0) {
728 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n",
729 buffer[4]);
730 QETH_CARD_TEXT(card, 2, "ckidxres");
731 QETH_CARD_TEXT(card, 2, " idxterm");
732 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
733 if (buffer[4] == 0xf6) {
734 dev_err(&card->gdev->dev,
735 "The qeth device is not configured "
736 "for the OSI layer required by z/VM\n");
737 return -EPERM;
738 }
739 return -EIO;
740 }
741 return 0;
742 }
743
CARD_FROM_CDEV(struct ccw_device * cdev)744 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
745 {
746 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
747 dev_get_drvdata(&cdev->dev))->dev);
748 return card;
749 }
750
__qeth_get_buffer(struct qeth_channel * channel)751 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
752 {
753 __u8 index;
754
755 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
756 index = channel->io_buf_no;
757 do {
758 if (channel->iob[index].state == BUF_STATE_FREE) {
759 channel->iob[index].state = BUF_STATE_LOCKED;
760 channel->io_buf_no = (channel->io_buf_no + 1) %
761 QETH_CMD_BUFFER_NO;
762 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
763 return channel->iob + index;
764 }
765 index = (index + 1) % QETH_CMD_BUFFER_NO;
766 } while (index != channel->io_buf_no);
767
768 return NULL;
769 }
770
qeth_release_buffer(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)771 void qeth_release_buffer(struct qeth_channel *channel,
772 struct qeth_cmd_buffer *iob)
773 {
774 unsigned long flags;
775
776 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
777 spin_lock_irqsave(&channel->iob_lock, flags);
778 memset(iob->data, 0, QETH_BUFSIZE);
779 iob->state = BUF_STATE_FREE;
780 iob->callback = qeth_send_control_data_cb;
781 iob->rc = 0;
782 spin_unlock_irqrestore(&channel->iob_lock, flags);
783 wake_up(&channel->wait_q);
784 }
785 EXPORT_SYMBOL_GPL(qeth_release_buffer);
786
qeth_get_buffer(struct qeth_channel * channel)787 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
788 {
789 struct qeth_cmd_buffer *buffer = NULL;
790 unsigned long flags;
791
792 spin_lock_irqsave(&channel->iob_lock, flags);
793 buffer = __qeth_get_buffer(channel);
794 spin_unlock_irqrestore(&channel->iob_lock, flags);
795 return buffer;
796 }
797
qeth_wait_for_buffer(struct qeth_channel * channel)798 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
799 {
800 struct qeth_cmd_buffer *buffer;
801 wait_event(channel->wait_q,
802 ((buffer = qeth_get_buffer(channel)) != NULL));
803 return buffer;
804 }
805 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
806
qeth_clear_cmd_buffers(struct qeth_channel * channel)807 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
808 {
809 int cnt;
810
811 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
812 qeth_release_buffer(channel, &channel->iob[cnt]);
813 channel->io_buf_no = 0;
814 }
815 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
816
qeth_send_control_data_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)817 static void qeth_send_control_data_cb(struct qeth_channel *channel,
818 struct qeth_cmd_buffer *iob)
819 {
820 struct qeth_card *card;
821 struct qeth_reply *reply, *r;
822 struct qeth_ipa_cmd *cmd;
823 unsigned long flags;
824 int keep_reply;
825 int rc = 0;
826
827 card = CARD_FROM_CDEV(channel->ccwdev);
828 QETH_CARD_TEXT(card, 4, "sndctlcb");
829 rc = qeth_check_idx_response(card, iob->data);
830 switch (rc) {
831 case 0:
832 break;
833 case -EIO:
834 qeth_clear_ipacmd_list(card);
835 qeth_schedule_recovery(card);
836 /* fall through */
837 default:
838 goto out;
839 }
840
841 cmd = qeth_check_ipa_data(card, iob);
842 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
843 goto out;
844 /*in case of OSN : check if cmd is set */
845 if (card->info.type == QETH_CARD_TYPE_OSN &&
846 cmd &&
847 cmd->hdr.command != IPA_CMD_STARTLAN &&
848 card->osn_info.assist_cb != NULL) {
849 card->osn_info.assist_cb(card->dev, cmd);
850 goto out;
851 }
852
853 spin_lock_irqsave(&card->lock, flags);
854 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
855 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
856 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
857 qeth_get_reply(reply);
858 list_del_init(&reply->list);
859 spin_unlock_irqrestore(&card->lock, flags);
860 keep_reply = 0;
861 if (reply->callback != NULL) {
862 if (cmd) {
863 reply->offset = (__u16)((char *)cmd -
864 (char *)iob->data);
865 keep_reply = reply->callback(card,
866 reply,
867 (unsigned long)cmd);
868 } else
869 keep_reply = reply->callback(card,
870 reply,
871 (unsigned long)iob);
872 }
873 if (cmd)
874 reply->rc = (u16) cmd->hdr.return_code;
875 else if (iob->rc)
876 reply->rc = iob->rc;
877 if (keep_reply) {
878 spin_lock_irqsave(&card->lock, flags);
879 list_add_tail(&reply->list,
880 &card->cmd_waiter_list);
881 spin_unlock_irqrestore(&card->lock, flags);
882 } else {
883 atomic_inc(&reply->received);
884 wake_up(&reply->wait_q);
885 }
886 qeth_put_reply(reply);
887 goto out;
888 }
889 }
890 spin_unlock_irqrestore(&card->lock, flags);
891 out:
892 memcpy(&card->seqno.pdu_hdr_ack,
893 QETH_PDU_HEADER_SEQ_NO(iob->data),
894 QETH_SEQ_NO_LENGTH);
895 qeth_release_buffer(channel, iob);
896 }
897
qeth_set_thread_start_bit(struct qeth_card * card,unsigned long thread)898 static int qeth_set_thread_start_bit(struct qeth_card *card,
899 unsigned long thread)
900 {
901 unsigned long flags;
902
903 spin_lock_irqsave(&card->thread_mask_lock, flags);
904 if (!(card->thread_allowed_mask & thread) ||
905 (card->thread_start_mask & thread)) {
906 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
907 return -EPERM;
908 }
909 card->thread_start_mask |= thread;
910 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
911 return 0;
912 }
913
qeth_clear_thread_start_bit(struct qeth_card * card,unsigned long thread)914 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
915 {
916 unsigned long flags;
917
918 spin_lock_irqsave(&card->thread_mask_lock, flags);
919 card->thread_start_mask &= ~thread;
920 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
921 wake_up(&card->wait_q);
922 }
923 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
924
qeth_clear_thread_running_bit(struct qeth_card * card,unsigned long thread)925 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
926 {
927 unsigned long flags;
928
929 spin_lock_irqsave(&card->thread_mask_lock, flags);
930 card->thread_running_mask &= ~thread;
931 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
932 wake_up_all(&card->wait_q);
933 }
934 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
935
__qeth_do_run_thread(struct qeth_card * card,unsigned long thread)936 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
937 {
938 unsigned long flags;
939 int rc = 0;
940
941 spin_lock_irqsave(&card->thread_mask_lock, flags);
942 if (card->thread_start_mask & thread) {
943 if ((card->thread_allowed_mask & thread) &&
944 !(card->thread_running_mask & thread)) {
945 rc = 1;
946 card->thread_start_mask &= ~thread;
947 card->thread_running_mask |= thread;
948 } else
949 rc = -EPERM;
950 }
951 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
952 return rc;
953 }
954
qeth_do_run_thread(struct qeth_card * card,unsigned long thread)955 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
956 {
957 int rc = 0;
958
959 wait_event(card->wait_q,
960 (rc = __qeth_do_run_thread(card, thread)) >= 0);
961 return rc;
962 }
963 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
964
qeth_schedule_recovery(struct qeth_card * card)965 void qeth_schedule_recovery(struct qeth_card *card)
966 {
967 QETH_CARD_TEXT(card, 2, "startrec");
968 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
969 schedule_work(&card->kernel_thread_starter);
970 }
971 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
972
qeth_get_problem(struct ccw_device * cdev,struct irb * irb)973 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
974 {
975 int dstat, cstat;
976 char *sense;
977 struct qeth_card *card;
978
979 sense = (char *) irb->ecw;
980 cstat = irb->scsw.cmd.cstat;
981 dstat = irb->scsw.cmd.dstat;
982 card = CARD_FROM_CDEV(cdev);
983
984 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
985 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
986 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
987 QETH_CARD_TEXT(card, 2, "CGENCHK");
988 dev_warn(&cdev->dev, "The qeth device driver "
989 "failed to recover an error on the device\n");
990 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
991 dev_name(&cdev->dev), dstat, cstat);
992 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
993 16, 1, irb, 64, 1);
994 return 1;
995 }
996
997 if (dstat & DEV_STAT_UNIT_CHECK) {
998 if (sense[SENSE_RESETTING_EVENT_BYTE] &
999 SENSE_RESETTING_EVENT_FLAG) {
1000 QETH_CARD_TEXT(card, 2, "REVIND");
1001 return 1;
1002 }
1003 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1004 SENSE_COMMAND_REJECT_FLAG) {
1005 QETH_CARD_TEXT(card, 2, "CMDREJi");
1006 return 1;
1007 }
1008 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1009 QETH_CARD_TEXT(card, 2, "AFFE");
1010 return 1;
1011 }
1012 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1013 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1014 return 0;
1015 }
1016 QETH_CARD_TEXT(card, 2, "DGENCHK");
1017 return 1;
1018 }
1019 return 0;
1020 }
1021
__qeth_check_irb_error(struct ccw_device * cdev,unsigned long intparm,struct irb * irb)1022 static long __qeth_check_irb_error(struct ccw_device *cdev,
1023 unsigned long intparm, struct irb *irb)
1024 {
1025 struct qeth_card *card;
1026
1027 card = CARD_FROM_CDEV(cdev);
1028
1029 if (!card || !IS_ERR(irb))
1030 return 0;
1031
1032 switch (PTR_ERR(irb)) {
1033 case -EIO:
1034 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1035 dev_name(&cdev->dev));
1036 QETH_CARD_TEXT(card, 2, "ckirberr");
1037 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1038 break;
1039 case -ETIMEDOUT:
1040 dev_warn(&cdev->dev, "A hardware operation timed out"
1041 " on the device\n");
1042 QETH_CARD_TEXT(card, 2, "ckirberr");
1043 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1044 if (intparm == QETH_RCD_PARM) {
1045 if (card->data.ccwdev == cdev) {
1046 card->data.state = CH_STATE_DOWN;
1047 wake_up(&card->wait_q);
1048 }
1049 }
1050 break;
1051 default:
1052 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1053 dev_name(&cdev->dev), PTR_ERR(irb));
1054 QETH_CARD_TEXT(card, 2, "ckirberr");
1055 QETH_CARD_TEXT(card, 2, " rc???");
1056 }
1057 return PTR_ERR(irb);
1058 }
1059
qeth_irq(struct ccw_device * cdev,unsigned long intparm,struct irb * irb)1060 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1061 struct irb *irb)
1062 {
1063 int rc;
1064 int cstat, dstat;
1065 struct qeth_cmd_buffer *iob = NULL;
1066 struct qeth_channel *channel;
1067 struct qeth_card *card;
1068
1069 card = CARD_FROM_CDEV(cdev);
1070 if (!card)
1071 return;
1072
1073 QETH_CARD_TEXT(card, 5, "irq");
1074
1075 if (card->read.ccwdev == cdev) {
1076 channel = &card->read;
1077 QETH_CARD_TEXT(card, 5, "read");
1078 } else if (card->write.ccwdev == cdev) {
1079 channel = &card->write;
1080 QETH_CARD_TEXT(card, 5, "write");
1081 } else {
1082 channel = &card->data;
1083 QETH_CARD_TEXT(card, 5, "data");
1084 }
1085
1086 if (qeth_intparm_is_iob(intparm))
1087 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1088
1089 if (__qeth_check_irb_error(cdev, intparm, irb)) {
1090 /* IO was terminated, free its resources. */
1091 if (iob)
1092 qeth_release_buffer(iob->channel, iob);
1093 atomic_set(&channel->irq_pending, 0);
1094 wake_up(&card->wait_q);
1095 return;
1096 }
1097
1098 atomic_set(&channel->irq_pending, 0);
1099
1100 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1101 channel->state = CH_STATE_STOPPED;
1102
1103 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1104 channel->state = CH_STATE_HALTED;
1105
1106 /*let's wake up immediately on data channel*/
1107 if ((channel == &card->data) && (intparm != 0) &&
1108 (intparm != QETH_RCD_PARM))
1109 goto out;
1110
1111 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1112 QETH_CARD_TEXT(card, 6, "clrchpar");
1113 /* we don't have to handle this further */
1114 intparm = 0;
1115 }
1116 if (intparm == QETH_HALT_CHANNEL_PARM) {
1117 QETH_CARD_TEXT(card, 6, "hltchpar");
1118 /* we don't have to handle this further */
1119 intparm = 0;
1120 }
1121
1122 cstat = irb->scsw.cmd.cstat;
1123 dstat = irb->scsw.cmd.dstat;
1124
1125 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1126 (dstat & DEV_STAT_UNIT_CHECK) ||
1127 (cstat)) {
1128 if (irb->esw.esw0.erw.cons) {
1129 dev_warn(&channel->ccwdev->dev,
1130 "The qeth device driver failed to recover "
1131 "an error on the device\n");
1132 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1133 "0x%X dstat 0x%X\n",
1134 dev_name(&channel->ccwdev->dev), cstat, dstat);
1135 print_hex_dump(KERN_WARNING, "qeth: irb ",
1136 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1137 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1138 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1139 }
1140 if (intparm == QETH_RCD_PARM) {
1141 channel->state = CH_STATE_DOWN;
1142 goto out;
1143 }
1144 rc = qeth_get_problem(cdev, irb);
1145 if (rc) {
1146 card->read_or_write_problem = 1;
1147 if (iob)
1148 qeth_release_buffer(iob->channel, iob);
1149 qeth_clear_ipacmd_list(card);
1150 qeth_schedule_recovery(card);
1151 goto out;
1152 }
1153 }
1154
1155 if (intparm == QETH_RCD_PARM) {
1156 channel->state = CH_STATE_RCD_DONE;
1157 goto out;
1158 }
1159 if (channel == &card->data)
1160 return;
1161 if (channel == &card->read &&
1162 channel->state == CH_STATE_UP)
1163 __qeth_issue_next_read(card);
1164
1165 if (iob && iob->callback)
1166 iob->callback(iob->channel, iob);
1167
1168 out:
1169 wake_up(&card->wait_q);
1170 return;
1171 }
1172
qeth_notify_skbs(struct qeth_qdio_out_q * q,struct qeth_qdio_out_buffer * buf,enum iucv_tx_notify notification)1173 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1174 struct qeth_qdio_out_buffer *buf,
1175 enum iucv_tx_notify notification)
1176 {
1177 struct sk_buff *skb;
1178
1179 if (skb_queue_empty(&buf->skb_list))
1180 goto out;
1181 skb = skb_peek(&buf->skb_list);
1182 while (skb) {
1183 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1184 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1185 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1186 if (skb->sk) {
1187 struct iucv_sock *iucv = iucv_sk(skb->sk);
1188 iucv->sk_txnotify(skb, notification);
1189 }
1190 }
1191 if (skb_queue_is_last(&buf->skb_list, skb))
1192 skb = NULL;
1193 else
1194 skb = skb_queue_next(&buf->skb_list, skb);
1195 }
1196 out:
1197 return;
1198 }
1199
qeth_release_skbs(struct qeth_qdio_out_buffer * buf)1200 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1201 {
1202 struct sk_buff *skb;
1203 struct iucv_sock *iucv;
1204 int notify_general_error = 0;
1205
1206 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1207 notify_general_error = 1;
1208
1209 /* release may never happen from within CQ tasklet scope */
1210 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1211
1212 skb = skb_dequeue(&buf->skb_list);
1213 while (skb) {
1214 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1215 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1216 if (notify_general_error &&
1217 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1218 if (skb->sk) {
1219 iucv = iucv_sk(skb->sk);
1220 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1221 }
1222 }
1223 refcount_dec(&skb->users);
1224 dev_kfree_skb_any(skb);
1225 skb = skb_dequeue(&buf->skb_list);
1226 }
1227 }
1228
qeth_clear_output_buffer(struct qeth_qdio_out_q * queue,struct qeth_qdio_out_buffer * buf)1229 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1230 struct qeth_qdio_out_buffer *buf)
1231 {
1232 int i;
1233
1234 /* is PCI flag set on buffer? */
1235 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1236 atomic_dec(&queue->set_pci_flags_count);
1237
1238 qeth_release_skbs(buf);
1239
1240 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1241 if (buf->buffer->element[i].addr && buf->is_header[i])
1242 kmem_cache_free(qeth_core_header_cache,
1243 buf->buffer->element[i].addr);
1244 buf->is_header[i] = 0;
1245 }
1246
1247 qeth_scrub_qdio_buffer(buf->buffer,
1248 QETH_MAX_BUFFER_ELEMENTS(queue->card));
1249 buf->next_element_to_fill = 0;
1250 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1251 }
1252
qeth_clear_outq_buffers(struct qeth_qdio_out_q * q,int free)1253 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1254 {
1255 int j;
1256
1257 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1258 if (!q->bufs[j])
1259 continue;
1260 qeth_cleanup_handled_pending(q, j, 1);
1261 qeth_clear_output_buffer(q, q->bufs[j]);
1262 if (free) {
1263 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1264 q->bufs[j] = NULL;
1265 }
1266 }
1267 }
1268
qeth_clear_qdio_buffers(struct qeth_card * card)1269 void qeth_clear_qdio_buffers(struct qeth_card *card)
1270 {
1271 int i;
1272
1273 QETH_CARD_TEXT(card, 2, "clearqdbf");
1274 /* clear outbound buffers to free skbs */
1275 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1276 if (card->qdio.out_qs[i]) {
1277 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1278 }
1279 }
1280 }
1281 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1282
qeth_free_buffer_pool(struct qeth_card * card)1283 static void qeth_free_buffer_pool(struct qeth_card *card)
1284 {
1285 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1286 int i = 0;
1287 list_for_each_entry_safe(pool_entry, tmp,
1288 &card->qdio.init_pool.entry_list, init_list){
1289 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1290 free_page((unsigned long)pool_entry->elements[i]);
1291 list_del(&pool_entry->init_list);
1292 kfree(pool_entry);
1293 }
1294 }
1295
qeth_clean_channel(struct qeth_channel * channel)1296 static void qeth_clean_channel(struct qeth_channel *channel)
1297 {
1298 struct ccw_device *cdev = channel->ccwdev;
1299 int cnt;
1300
1301 QETH_DBF_TEXT(SETUP, 2, "freech");
1302
1303 spin_lock_irq(get_ccwdev_lock(cdev));
1304 cdev->handler = NULL;
1305 spin_unlock_irq(get_ccwdev_lock(cdev));
1306
1307 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1308 kfree(channel->iob[cnt].data);
1309 kfree(channel->ccw);
1310 }
1311
qeth_setup_channel(struct qeth_channel * channel,bool alloc_buffers)1312 static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers)
1313 {
1314 struct ccw_device *cdev = channel->ccwdev;
1315 int cnt;
1316
1317 QETH_DBF_TEXT(SETUP, 2, "setupch");
1318
1319 channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
1320 if (!channel->ccw)
1321 return -ENOMEM;
1322 channel->state = CH_STATE_DOWN;
1323 atomic_set(&channel->irq_pending, 0);
1324 init_waitqueue_head(&channel->wait_q);
1325
1326 spin_lock_irq(get_ccwdev_lock(cdev));
1327 cdev->handler = qeth_irq;
1328 spin_unlock_irq(get_ccwdev_lock(cdev));
1329
1330 if (!alloc_buffers)
1331 return 0;
1332
1333 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
1334 channel->iob[cnt].data =
1335 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
1336 if (channel->iob[cnt].data == NULL)
1337 break;
1338 channel->iob[cnt].state = BUF_STATE_FREE;
1339 channel->iob[cnt].channel = channel;
1340 channel->iob[cnt].callback = qeth_send_control_data_cb;
1341 channel->iob[cnt].rc = 0;
1342 }
1343 if (cnt < QETH_CMD_BUFFER_NO) {
1344 qeth_clean_channel(channel);
1345 return -ENOMEM;
1346 }
1347 channel->io_buf_no = 0;
1348 spin_lock_init(&channel->iob_lock);
1349
1350 return 0;
1351 }
1352
qeth_set_single_write_queues(struct qeth_card * card)1353 static void qeth_set_single_write_queues(struct qeth_card *card)
1354 {
1355 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1356 (card->qdio.no_out_queues == 4))
1357 qeth_free_qdio_buffers(card);
1358
1359 card->qdio.no_out_queues = 1;
1360 if (card->qdio.default_out_queue != 0)
1361 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1362
1363 card->qdio.default_out_queue = 0;
1364 }
1365
qeth_set_multiple_write_queues(struct qeth_card * card)1366 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1367 {
1368 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1369 (card->qdio.no_out_queues == 1)) {
1370 qeth_free_qdio_buffers(card);
1371 card->qdio.default_out_queue = 2;
1372 }
1373 card->qdio.no_out_queues = 4;
1374 }
1375
qeth_update_from_chp_desc(struct qeth_card * card)1376 static int qeth_update_from_chp_desc(struct qeth_card *card)
1377 {
1378 struct ccw_device *ccwdev;
1379 struct channel_path_desc_fmt0 *chp_dsc;
1380
1381 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1382
1383 ccwdev = card->data.ccwdev;
1384 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1385 if (!chp_dsc)
1386 return -ENOMEM;
1387
1388 card->info.func_level = 0x4100 + chp_dsc->desc;
1389 if (card->info.type == QETH_CARD_TYPE_IQD)
1390 goto out;
1391
1392 /* CHPP field bit 6 == 1 -> single queue */
1393 if ((chp_dsc->chpp & 0x02) == 0x02)
1394 qeth_set_single_write_queues(card);
1395 else
1396 qeth_set_multiple_write_queues(card);
1397 out:
1398 kfree(chp_dsc);
1399 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1400 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1401 return 0;
1402 }
1403
qeth_init_qdio_info(struct qeth_card * card)1404 static void qeth_init_qdio_info(struct qeth_card *card)
1405 {
1406 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1407 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1408 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1409 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1410 card->qdio.no_out_queues = QETH_MAX_QUEUES;
1411
1412 /* inbound */
1413 card->qdio.no_in_queues = 1;
1414 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1415 if (card->info.type == QETH_CARD_TYPE_IQD)
1416 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1417 else
1418 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1419 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1420 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1421 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1422 }
1423
qeth_set_initial_options(struct qeth_card * card)1424 static void qeth_set_initial_options(struct qeth_card *card)
1425 {
1426 card->options.route4.type = NO_ROUTER;
1427 card->options.route6.type = NO_ROUTER;
1428 card->options.rx_sg_cb = QETH_RX_SG_CB;
1429 card->options.isolation = ISOLATION_MODE_NONE;
1430 card->options.cq = QETH_CQ_DISABLED;
1431 }
1432
qeth_do_start_thread(struct qeth_card * card,unsigned long thread)1433 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1434 {
1435 unsigned long flags;
1436 int rc = 0;
1437
1438 spin_lock_irqsave(&card->thread_mask_lock, flags);
1439 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1440 (u8) card->thread_start_mask,
1441 (u8) card->thread_allowed_mask,
1442 (u8) card->thread_running_mask);
1443 rc = (card->thread_start_mask & thread);
1444 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1445 return rc;
1446 }
1447
qeth_start_kernel_thread(struct work_struct * work)1448 static void qeth_start_kernel_thread(struct work_struct *work)
1449 {
1450 struct task_struct *ts;
1451 struct qeth_card *card = container_of(work, struct qeth_card,
1452 kernel_thread_starter);
1453 QETH_CARD_TEXT(card , 2, "strthrd");
1454
1455 if (card->read.state != CH_STATE_UP &&
1456 card->write.state != CH_STATE_UP)
1457 return;
1458 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1459 ts = kthread_run(card->discipline->recover, (void *)card,
1460 "qeth_recover");
1461 if (IS_ERR(ts)) {
1462 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1463 qeth_clear_thread_running_bit(card,
1464 QETH_RECOVER_THREAD);
1465 }
1466 }
1467 }
1468
1469 static void qeth_buffer_reclaim_work(struct work_struct *);
qeth_setup_card(struct qeth_card * card)1470 static void qeth_setup_card(struct qeth_card *card)
1471 {
1472 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1473 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1474
1475 card->info.type = CARD_RDEV(card)->id.driver_info;
1476 card->state = CARD_STATE_DOWN;
1477 spin_lock_init(&card->mclock);
1478 spin_lock_init(&card->lock);
1479 spin_lock_init(&card->ip_lock);
1480 spin_lock_init(&card->thread_mask_lock);
1481 mutex_init(&card->conf_mutex);
1482 mutex_init(&card->discipline_mutex);
1483 mutex_init(&card->vid_list_mutex);
1484 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1485 INIT_LIST_HEAD(&card->cmd_waiter_list);
1486 init_waitqueue_head(&card->wait_q);
1487 qeth_set_initial_options(card);
1488 /* IP address takeover */
1489 INIT_LIST_HEAD(&card->ipato.entries);
1490 qeth_init_qdio_info(card);
1491 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1492 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1493 }
1494
qeth_core_sl_print(struct seq_file * m,struct service_level * slr)1495 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1496 {
1497 struct qeth_card *card = container_of(slr, struct qeth_card,
1498 qeth_service_level);
1499 if (card->info.mcl_level[0])
1500 seq_printf(m, "qeth: %s firmware level %s\n",
1501 CARD_BUS_ID(card), card->info.mcl_level);
1502 }
1503
qeth_alloc_card(struct ccwgroup_device * gdev)1504 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1505 {
1506 struct qeth_card *card;
1507
1508 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1509 card = kzalloc(sizeof(*card), GFP_KERNEL);
1510 if (!card)
1511 goto out;
1512 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1513
1514 card->gdev = gdev;
1515 CARD_RDEV(card) = gdev->cdev[0];
1516 CARD_WDEV(card) = gdev->cdev[1];
1517 CARD_DDEV(card) = gdev->cdev[2];
1518 if (qeth_setup_channel(&card->read, true))
1519 goto out_ip;
1520 if (qeth_setup_channel(&card->write, true))
1521 goto out_channel;
1522 if (qeth_setup_channel(&card->data, false))
1523 goto out_data;
1524 card->options.layer2 = -1;
1525 card->qeth_service_level.seq_print = qeth_core_sl_print;
1526 register_service_level(&card->qeth_service_level);
1527 return card;
1528
1529 out_data:
1530 qeth_clean_channel(&card->write);
1531 out_channel:
1532 qeth_clean_channel(&card->read);
1533 out_ip:
1534 kfree(card);
1535 out:
1536 return NULL;
1537 }
1538
qeth_clear_channel(struct qeth_channel * channel)1539 static int qeth_clear_channel(struct qeth_channel *channel)
1540 {
1541 unsigned long flags;
1542 struct qeth_card *card;
1543 int rc;
1544
1545 card = CARD_FROM_CDEV(channel->ccwdev);
1546 QETH_CARD_TEXT(card, 3, "clearch");
1547 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1548 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1549 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1550
1551 if (rc)
1552 return rc;
1553 rc = wait_event_interruptible_timeout(card->wait_q,
1554 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1555 if (rc == -ERESTARTSYS)
1556 return rc;
1557 if (channel->state != CH_STATE_STOPPED)
1558 return -ETIME;
1559 channel->state = CH_STATE_DOWN;
1560 return 0;
1561 }
1562
qeth_halt_channel(struct qeth_channel * channel)1563 static int qeth_halt_channel(struct qeth_channel *channel)
1564 {
1565 unsigned long flags;
1566 struct qeth_card *card;
1567 int rc;
1568
1569 card = CARD_FROM_CDEV(channel->ccwdev);
1570 QETH_CARD_TEXT(card, 3, "haltch");
1571 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1572 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1573 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1574
1575 if (rc)
1576 return rc;
1577 rc = wait_event_interruptible_timeout(card->wait_q,
1578 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1579 if (rc == -ERESTARTSYS)
1580 return rc;
1581 if (channel->state != CH_STATE_HALTED)
1582 return -ETIME;
1583 return 0;
1584 }
1585
qeth_halt_channels(struct qeth_card * card)1586 static int qeth_halt_channels(struct qeth_card *card)
1587 {
1588 int rc1 = 0, rc2 = 0, rc3 = 0;
1589
1590 QETH_CARD_TEXT(card, 3, "haltchs");
1591 rc1 = qeth_halt_channel(&card->read);
1592 rc2 = qeth_halt_channel(&card->write);
1593 rc3 = qeth_halt_channel(&card->data);
1594 if (rc1)
1595 return rc1;
1596 if (rc2)
1597 return rc2;
1598 return rc3;
1599 }
1600
qeth_clear_channels(struct qeth_card * card)1601 static int qeth_clear_channels(struct qeth_card *card)
1602 {
1603 int rc1 = 0, rc2 = 0, rc3 = 0;
1604
1605 QETH_CARD_TEXT(card, 3, "clearchs");
1606 rc1 = qeth_clear_channel(&card->read);
1607 rc2 = qeth_clear_channel(&card->write);
1608 rc3 = qeth_clear_channel(&card->data);
1609 if (rc1)
1610 return rc1;
1611 if (rc2)
1612 return rc2;
1613 return rc3;
1614 }
1615
qeth_clear_halt_card(struct qeth_card * card,int halt)1616 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1617 {
1618 int rc = 0;
1619
1620 QETH_CARD_TEXT(card, 3, "clhacrd");
1621
1622 if (halt)
1623 rc = qeth_halt_channels(card);
1624 if (rc)
1625 return rc;
1626 return qeth_clear_channels(card);
1627 }
1628
qeth_qdio_clear_card(struct qeth_card * card,int use_halt)1629 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1630 {
1631 int rc = 0;
1632
1633 QETH_CARD_TEXT(card, 3, "qdioclr");
1634 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1635 QETH_QDIO_CLEANING)) {
1636 case QETH_QDIO_ESTABLISHED:
1637 if (card->info.type == QETH_CARD_TYPE_IQD)
1638 rc = qdio_shutdown(CARD_DDEV(card),
1639 QDIO_FLAG_CLEANUP_USING_HALT);
1640 else
1641 rc = qdio_shutdown(CARD_DDEV(card),
1642 QDIO_FLAG_CLEANUP_USING_CLEAR);
1643 if (rc)
1644 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1645 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1646 break;
1647 case QETH_QDIO_CLEANING:
1648 return rc;
1649 default:
1650 break;
1651 }
1652 rc = qeth_clear_halt_card(card, use_halt);
1653 if (rc)
1654 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1655 card->state = CARD_STATE_DOWN;
1656 return rc;
1657 }
1658 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1659
qeth_read_conf_data(struct qeth_card * card,void ** buffer,int * length)1660 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1661 int *length)
1662 {
1663 struct ciw *ciw;
1664 char *rcd_buf;
1665 int ret;
1666 struct qeth_channel *channel = &card->data;
1667 unsigned long flags;
1668
1669 /*
1670 * scan for RCD command in extended SenseID data
1671 */
1672 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1673 if (!ciw || ciw->cmd == 0)
1674 return -EOPNOTSUPP;
1675 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1676 if (!rcd_buf)
1677 return -ENOMEM;
1678
1679 qeth_setup_ccw(channel->ccw, ciw->cmd, ciw->count, rcd_buf);
1680 channel->state = CH_STATE_RCD;
1681 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1682 ret = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1683 QETH_RCD_PARM, LPM_ANYPATH, 0,
1684 QETH_RCD_TIMEOUT);
1685 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1686 if (!ret)
1687 wait_event(card->wait_q,
1688 (channel->state == CH_STATE_RCD_DONE ||
1689 channel->state == CH_STATE_DOWN));
1690 if (channel->state == CH_STATE_DOWN)
1691 ret = -EIO;
1692 else
1693 channel->state = CH_STATE_DOWN;
1694 if (ret) {
1695 kfree(rcd_buf);
1696 *buffer = NULL;
1697 *length = 0;
1698 } else {
1699 *length = ciw->count;
1700 *buffer = rcd_buf;
1701 }
1702 return ret;
1703 }
1704
qeth_configure_unitaddr(struct qeth_card * card,char * prcd)1705 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1706 {
1707 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1708 card->info.chpid = prcd[30];
1709 card->info.unit_addr2 = prcd[31];
1710 card->info.cula = prcd[63];
1711 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1712 (prcd[0x11] == _ascebc['M']));
1713 }
1714
qeth_vm_detect_layer(struct qeth_card * card)1715 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1716 {
1717 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1718 struct diag26c_vnic_resp *response = NULL;
1719 struct diag26c_vnic_req *request = NULL;
1720 struct ccw_dev_id id;
1721 char userid[80];
1722 int rc = 0;
1723
1724 QETH_DBF_TEXT(SETUP, 2, "vmlayer");
1725
1726 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1727 if (rc)
1728 goto out;
1729
1730 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1731 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1732 if (!request || !response) {
1733 rc = -ENOMEM;
1734 goto out;
1735 }
1736
1737 ccw_device_get_id(CARD_RDEV(card), &id);
1738 request->resp_buf_len = sizeof(*response);
1739 request->resp_version = DIAG26C_VERSION6_VM65918;
1740 request->req_format = DIAG26C_VNIC_INFO;
1741 ASCEBC(userid, 8);
1742 memcpy(&request->sys_name, userid, 8);
1743 request->devno = id.devno;
1744
1745 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1746 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1747 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1748 if (rc)
1749 goto out;
1750 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1751
1752 if (request->resp_buf_len < sizeof(*response) ||
1753 response->version != request->resp_version) {
1754 rc = -EIO;
1755 goto out;
1756 }
1757
1758 if (response->protocol == VNIC_INFO_PROT_L2)
1759 disc = QETH_DISCIPLINE_LAYER2;
1760 else if (response->protocol == VNIC_INFO_PROT_L3)
1761 disc = QETH_DISCIPLINE_LAYER3;
1762
1763 out:
1764 kfree(response);
1765 kfree(request);
1766 if (rc)
1767 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc);
1768 return disc;
1769 }
1770
1771 /* Determine whether the device requires a specific layer discipline */
qeth_enforce_discipline(struct qeth_card * card)1772 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1773 {
1774 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1775
1776 if (card->info.type == QETH_CARD_TYPE_OSM ||
1777 card->info.type == QETH_CARD_TYPE_OSN)
1778 disc = QETH_DISCIPLINE_LAYER2;
1779 else if (card->info.guestlan)
1780 disc = (card->info.type == QETH_CARD_TYPE_IQD) ?
1781 QETH_DISCIPLINE_LAYER3 :
1782 qeth_vm_detect_layer(card);
1783
1784 switch (disc) {
1785 case QETH_DISCIPLINE_LAYER2:
1786 QETH_DBF_TEXT(SETUP, 3, "force l2");
1787 break;
1788 case QETH_DISCIPLINE_LAYER3:
1789 QETH_DBF_TEXT(SETUP, 3, "force l3");
1790 break;
1791 default:
1792 QETH_DBF_TEXT(SETUP, 3, "force no");
1793 }
1794
1795 return disc;
1796 }
1797
qeth_configure_blkt_default(struct qeth_card * card,char * prcd)1798 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1799 {
1800 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1801
1802 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1803 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1804 card->info.blkt.time_total = 0;
1805 card->info.blkt.inter_packet = 0;
1806 card->info.blkt.inter_packet_jumbo = 0;
1807 } else {
1808 card->info.blkt.time_total = 250;
1809 card->info.blkt.inter_packet = 5;
1810 card->info.blkt.inter_packet_jumbo = 15;
1811 }
1812 }
1813
qeth_init_tokens(struct qeth_card * card)1814 static void qeth_init_tokens(struct qeth_card *card)
1815 {
1816 card->token.issuer_rm_w = 0x00010103UL;
1817 card->token.cm_filter_w = 0x00010108UL;
1818 card->token.cm_connection_w = 0x0001010aUL;
1819 card->token.ulp_filter_w = 0x0001010bUL;
1820 card->token.ulp_connection_w = 0x0001010dUL;
1821 }
1822
qeth_init_func_level(struct qeth_card * card)1823 static void qeth_init_func_level(struct qeth_card *card)
1824 {
1825 switch (card->info.type) {
1826 case QETH_CARD_TYPE_IQD:
1827 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1828 break;
1829 case QETH_CARD_TYPE_OSD:
1830 case QETH_CARD_TYPE_OSN:
1831 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1832 break;
1833 default:
1834 break;
1835 }
1836 }
1837
qeth_idx_activate_get_answer(struct qeth_channel * channel,void (* idx_reply_cb)(struct qeth_channel *,struct qeth_cmd_buffer *))1838 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1839 void (*idx_reply_cb)(struct qeth_channel *,
1840 struct qeth_cmd_buffer *))
1841 {
1842 struct qeth_cmd_buffer *iob;
1843 unsigned long flags;
1844 int rc;
1845 struct qeth_card *card;
1846
1847 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1848 card = CARD_FROM_CDEV(channel->ccwdev);
1849 iob = qeth_get_buffer(channel);
1850 if (!iob)
1851 return -ENOMEM;
1852 iob->callback = idx_reply_cb;
1853 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
1854
1855 wait_event(card->wait_q,
1856 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1857 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1858 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1859 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1860 (addr_t) iob, 0, 0, QETH_TIMEOUT);
1861 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1862
1863 if (rc) {
1864 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1865 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1866 atomic_set(&channel->irq_pending, 0);
1867 qeth_release_buffer(channel, iob);
1868 wake_up(&card->wait_q);
1869 return rc;
1870 }
1871 rc = wait_event_interruptible_timeout(card->wait_q,
1872 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1873 if (rc == -ERESTARTSYS)
1874 return rc;
1875 if (channel->state != CH_STATE_UP) {
1876 rc = -ETIME;
1877 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1878 } else
1879 rc = 0;
1880 return rc;
1881 }
1882
qeth_idx_activate_channel(struct qeth_channel * channel,void (* idx_reply_cb)(struct qeth_channel *,struct qeth_cmd_buffer *))1883 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1884 void (*idx_reply_cb)(struct qeth_channel *,
1885 struct qeth_cmd_buffer *))
1886 {
1887 struct qeth_card *card;
1888 struct qeth_cmd_buffer *iob;
1889 unsigned long flags;
1890 __u16 temp;
1891 __u8 tmp;
1892 int rc;
1893 struct ccw_dev_id temp_devid;
1894
1895 card = CARD_FROM_CDEV(channel->ccwdev);
1896
1897 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1898
1899 iob = qeth_get_buffer(channel);
1900 if (!iob)
1901 return -ENOMEM;
1902 iob->callback = idx_reply_cb;
1903 qeth_setup_ccw(channel->ccw, CCW_CMD_WRITE, IDX_ACTIVATE_SIZE,
1904 iob->data);
1905 if (channel == &card->write) {
1906 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1907 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1908 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1909 card->seqno.trans_hdr++;
1910 } else {
1911 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1912 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1913 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1914 }
1915 tmp = ((u8)card->dev->dev_port) | 0x80;
1916 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1917 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1918 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1919 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1920 &card->info.func_level, sizeof(__u16));
1921 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1922 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1923 temp = (card->info.cula << 8) + card->info.unit_addr2;
1924 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1925
1926 wait_event(card->wait_q,
1927 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1928 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1929 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1930 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1931 (addr_t) iob, 0, 0, QETH_TIMEOUT);
1932 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1933
1934 if (rc) {
1935 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1936 rc);
1937 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1938 atomic_set(&channel->irq_pending, 0);
1939 qeth_release_buffer(channel, iob);
1940 wake_up(&card->wait_q);
1941 return rc;
1942 }
1943 rc = wait_event_interruptible_timeout(card->wait_q,
1944 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1945 if (rc == -ERESTARTSYS)
1946 return rc;
1947 if (channel->state != CH_STATE_ACTIVATING) {
1948 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1949 " failed to recover an error on the device\n");
1950 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1951 dev_name(&channel->ccwdev->dev));
1952 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1953 return -ETIME;
1954 }
1955 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1956 }
1957
qeth_peer_func_level(int level)1958 static int qeth_peer_func_level(int level)
1959 {
1960 if ((level & 0xff) == 8)
1961 return (level & 0xff) + 0x400;
1962 if (((level >> 8) & 3) == 1)
1963 return (level & 0xff) + 0x200;
1964 return level;
1965 }
1966
qeth_idx_write_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)1967 static void qeth_idx_write_cb(struct qeth_channel *channel,
1968 struct qeth_cmd_buffer *iob)
1969 {
1970 struct qeth_card *card;
1971 __u16 temp;
1972
1973 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1974
1975 if (channel->state == CH_STATE_DOWN) {
1976 channel->state = CH_STATE_ACTIVATING;
1977 goto out;
1978 }
1979 card = CARD_FROM_CDEV(channel->ccwdev);
1980
1981 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1982 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1983 dev_err(&channel->ccwdev->dev,
1984 "The adapter is used exclusively by another "
1985 "host\n");
1986 else
1987 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1988 " negative reply\n",
1989 dev_name(&channel->ccwdev->dev));
1990 goto out;
1991 }
1992 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1993 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1994 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1995 "function level mismatch (sent: 0x%x, received: "
1996 "0x%x)\n", dev_name(&channel->ccwdev->dev),
1997 card->info.func_level, temp);
1998 goto out;
1999 }
2000 channel->state = CH_STATE_UP;
2001 out:
2002 qeth_release_buffer(channel, iob);
2003 }
2004
qeth_idx_read_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)2005 static void qeth_idx_read_cb(struct qeth_channel *channel,
2006 struct qeth_cmd_buffer *iob)
2007 {
2008 struct qeth_card *card;
2009 __u16 temp;
2010
2011 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
2012 if (channel->state == CH_STATE_DOWN) {
2013 channel->state = CH_STATE_ACTIVATING;
2014 goto out;
2015 }
2016
2017 card = CARD_FROM_CDEV(channel->ccwdev);
2018 if (qeth_check_idx_response(card, iob->data))
2019 goto out;
2020
2021 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
2022 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2023 case QETH_IDX_ACT_ERR_EXCL:
2024 dev_err(&channel->ccwdev->dev,
2025 "The adapter is used exclusively by another "
2026 "host\n");
2027 break;
2028 case QETH_IDX_ACT_ERR_AUTH:
2029 case QETH_IDX_ACT_ERR_AUTH_USER:
2030 dev_err(&channel->ccwdev->dev,
2031 "Setting the device online failed because of "
2032 "insufficient authorization\n");
2033 break;
2034 default:
2035 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
2036 " negative reply\n",
2037 dev_name(&channel->ccwdev->dev));
2038 }
2039 QETH_CARD_TEXT_(card, 2, "idxread%c",
2040 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2041 goto out;
2042 }
2043
2044 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2045 if (temp != qeth_peer_func_level(card->info.func_level)) {
2046 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
2047 "level mismatch (sent: 0x%x, received: 0x%x)\n",
2048 dev_name(&channel->ccwdev->dev),
2049 card->info.func_level, temp);
2050 goto out;
2051 }
2052 memcpy(&card->token.issuer_rm_r,
2053 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2054 QETH_MPC_TOKEN_LENGTH);
2055 memcpy(&card->info.mcl_level[0],
2056 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2057 channel->state = CH_STATE_UP;
2058 out:
2059 qeth_release_buffer(channel, iob);
2060 }
2061
qeth_prepare_control_data(struct qeth_card * card,int len,struct qeth_cmd_buffer * iob)2062 void qeth_prepare_control_data(struct qeth_card *card, int len,
2063 struct qeth_cmd_buffer *iob)
2064 {
2065 qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, len, iob->data);
2066 iob->callback = qeth_release_buffer;
2067
2068 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2069 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2070 card->seqno.trans_hdr++;
2071 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2072 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2073 card->seqno.pdu_hdr++;
2074 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2075 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2076 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2077 }
2078 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2079
2080 /**
2081 * qeth_send_control_data() - send control command to the card
2082 * @card: qeth_card structure pointer
2083 * @len: size of the command buffer
2084 * @iob: qeth_cmd_buffer pointer
2085 * @reply_cb: callback function pointer
2086 * @cb_card: pointer to the qeth_card structure
2087 * @cb_reply: pointer to the qeth_reply structure
2088 * @cb_cmd: pointer to the original iob for non-IPA
2089 * commands, or to the qeth_ipa_cmd structure
2090 * for the IPA commands.
2091 * @reply_param: private pointer passed to the callback
2092 *
2093 * Returns the value of the `return_code' field of the response
2094 * block returned from the hardware, or other error indication.
2095 * Value of zero indicates successful execution of the command.
2096 *
2097 * Callback function gets called one or more times, with cb_cmd
2098 * pointing to the response returned by the hardware. Callback
2099 * function must return non-zero if more reply blocks are expected,
2100 * and zero if the last or only reply block is received. Callback
2101 * function can get the value of the reply_param pointer from the
2102 * field 'param' of the structure qeth_reply.
2103 */
2104
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)2105 int qeth_send_control_data(struct qeth_card *card, int len,
2106 struct qeth_cmd_buffer *iob,
2107 int (*reply_cb)(struct qeth_card *cb_card,
2108 struct qeth_reply *cb_reply,
2109 unsigned long cb_cmd),
2110 void *reply_param)
2111 {
2112 struct qeth_channel *channel = iob->channel;
2113 int rc;
2114 unsigned long flags;
2115 struct qeth_reply *reply = NULL;
2116 unsigned long timeout, event_timeout;
2117 struct qeth_ipa_cmd *cmd = NULL;
2118
2119 QETH_CARD_TEXT(card, 2, "sendctl");
2120
2121 if (card->read_or_write_problem) {
2122 qeth_release_buffer(channel, iob);
2123 return -EIO;
2124 }
2125 reply = qeth_alloc_reply(card);
2126 if (!reply) {
2127 qeth_release_buffer(channel, iob);
2128 return -ENOMEM;
2129 }
2130 reply->callback = reply_cb;
2131 reply->param = reply_param;
2132
2133 init_waitqueue_head(&reply->wait_q);
2134
2135 while (atomic_cmpxchg(&channel->irq_pending, 0, 1)) ;
2136
2137 if (IS_IPA(iob->data)) {
2138 cmd = __ipa_cmd(iob);
2139 cmd->hdr.seqno = card->seqno.ipa++;
2140 reply->seqno = cmd->hdr.seqno;
2141 event_timeout = QETH_IPA_TIMEOUT;
2142 } else {
2143 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2144 event_timeout = QETH_TIMEOUT;
2145 }
2146 qeth_prepare_control_data(card, len, iob);
2147
2148 spin_lock_irqsave(&card->lock, flags);
2149 list_add_tail(&reply->list, &card->cmd_waiter_list);
2150 spin_unlock_irqrestore(&card->lock, flags);
2151
2152 timeout = jiffies + event_timeout;
2153
2154 QETH_CARD_TEXT(card, 6, "noirqpnd");
2155 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
2156 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
2157 (addr_t) iob, 0, 0, event_timeout);
2158 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
2159 if (rc) {
2160 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2161 "ccw_device_start rc = %i\n",
2162 dev_name(&channel->ccwdev->dev), rc);
2163 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2164 spin_lock_irqsave(&card->lock, flags);
2165 list_del_init(&reply->list);
2166 qeth_put_reply(reply);
2167 spin_unlock_irqrestore(&card->lock, flags);
2168 qeth_release_buffer(channel, iob);
2169 atomic_set(&channel->irq_pending, 0);
2170 wake_up(&card->wait_q);
2171 return rc;
2172 }
2173
2174 /* we have only one long running ipassist, since we can ensure
2175 process context of this command we can sleep */
2176 if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2177 cmd->hdr.prot_version == QETH_PROT_IPV4) {
2178 if (!wait_event_timeout(reply->wait_q,
2179 atomic_read(&reply->received), event_timeout))
2180 goto time_err;
2181 } else {
2182 while (!atomic_read(&reply->received)) {
2183 if (time_after(jiffies, timeout))
2184 goto time_err;
2185 cpu_relax();
2186 }
2187 }
2188
2189 rc = reply->rc;
2190 qeth_put_reply(reply);
2191 return rc;
2192
2193 time_err:
2194 reply->rc = -ETIME;
2195 spin_lock_irqsave(&reply->card->lock, flags);
2196 list_del_init(&reply->list);
2197 spin_unlock_irqrestore(&reply->card->lock, flags);
2198 atomic_inc(&reply->received);
2199 rc = reply->rc;
2200 qeth_put_reply(reply);
2201 return rc;
2202 }
2203 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2204
qeth_cm_enable_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2205 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2206 unsigned long data)
2207 {
2208 struct qeth_cmd_buffer *iob;
2209
2210 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2211
2212 iob = (struct qeth_cmd_buffer *) data;
2213 memcpy(&card->token.cm_filter_r,
2214 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2215 QETH_MPC_TOKEN_LENGTH);
2216 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2217 return 0;
2218 }
2219
qeth_cm_enable(struct qeth_card * card)2220 static int qeth_cm_enable(struct qeth_card *card)
2221 {
2222 int rc;
2223 struct qeth_cmd_buffer *iob;
2224
2225 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2226
2227 iob = qeth_wait_for_buffer(&card->write);
2228 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2229 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2230 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2231 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2232 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2233
2234 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2235 qeth_cm_enable_cb, NULL);
2236 return rc;
2237 }
2238
qeth_cm_setup_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2239 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2240 unsigned long data)
2241 {
2242
2243 struct qeth_cmd_buffer *iob;
2244
2245 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2246
2247 iob = (struct qeth_cmd_buffer *) data;
2248 memcpy(&card->token.cm_connection_r,
2249 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2250 QETH_MPC_TOKEN_LENGTH);
2251 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2252 return 0;
2253 }
2254
qeth_cm_setup(struct qeth_card * card)2255 static int qeth_cm_setup(struct qeth_card *card)
2256 {
2257 int rc;
2258 struct qeth_cmd_buffer *iob;
2259
2260 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2261
2262 iob = qeth_wait_for_buffer(&card->write);
2263 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2264 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2265 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2266 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2267 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2268 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2269 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2270 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2271 qeth_cm_setup_cb, NULL);
2272 return rc;
2273
2274 }
2275
qeth_update_max_mtu(struct qeth_card * card,unsigned int max_mtu)2276 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2277 {
2278 struct net_device *dev = card->dev;
2279 unsigned int new_mtu;
2280
2281 if (!max_mtu) {
2282 /* IQD needs accurate max MTU to set up its RX buffers: */
2283 if (IS_IQD(card))
2284 return -EINVAL;
2285 /* tolerate quirky HW: */
2286 max_mtu = ETH_MAX_MTU;
2287 }
2288
2289 rtnl_lock();
2290 if (IS_IQD(card)) {
2291 /* move any device with default MTU to new max MTU: */
2292 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2293
2294 /* adjust RX buffer size to new max MTU: */
2295 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2296 if (dev->max_mtu && dev->max_mtu != max_mtu)
2297 qeth_free_qdio_buffers(card);
2298 } else {
2299 if (dev->mtu)
2300 new_mtu = dev->mtu;
2301 /* default MTUs for first setup: */
2302 else if (card->options.layer2)
2303 new_mtu = ETH_DATA_LEN;
2304 else
2305 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2306 }
2307
2308 dev->max_mtu = max_mtu;
2309 dev->mtu = min(new_mtu, max_mtu);
2310 rtnl_unlock();
2311 return 0;
2312 }
2313
qeth_get_mtu_outof_framesize(int framesize)2314 static int qeth_get_mtu_outof_framesize(int framesize)
2315 {
2316 switch (framesize) {
2317 case 0x4000:
2318 return 8192;
2319 case 0x6000:
2320 return 16384;
2321 case 0xa000:
2322 return 32768;
2323 case 0xffff:
2324 return 57344;
2325 default:
2326 return 0;
2327 }
2328 }
2329
qeth_ulp_enable_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2330 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2331 unsigned long data)
2332 {
2333
2334 __u16 mtu, framesize;
2335 __u16 len;
2336 __u8 link_type;
2337 struct qeth_cmd_buffer *iob;
2338
2339 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2340
2341 iob = (struct qeth_cmd_buffer *) data;
2342 memcpy(&card->token.ulp_filter_r,
2343 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2344 QETH_MPC_TOKEN_LENGTH);
2345 if (card->info.type == QETH_CARD_TYPE_IQD) {
2346 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2347 mtu = qeth_get_mtu_outof_framesize(framesize);
2348 } else {
2349 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2350 }
2351 *(u16 *)reply->param = mtu;
2352
2353 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2354 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2355 memcpy(&link_type,
2356 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2357 card->info.link_type = link_type;
2358 } else
2359 card->info.link_type = 0;
2360 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2361 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2362 return 0;
2363 }
2364
qeth_mpc_select_prot_type(struct qeth_card * card)2365 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2366 {
2367 if (IS_OSN(card))
2368 return QETH_PROT_OSN2;
2369 return (card->options.layer2 == 1) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2370 }
2371
qeth_ulp_enable(struct qeth_card * card)2372 static int qeth_ulp_enable(struct qeth_card *card)
2373 {
2374 u8 prot_type = qeth_mpc_select_prot_type(card);
2375 struct qeth_cmd_buffer *iob;
2376 u16 max_mtu;
2377 int rc;
2378
2379 /*FIXME: trace view callbacks*/
2380 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2381
2382 iob = qeth_wait_for_buffer(&card->write);
2383 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2384
2385 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2386 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2387 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2388 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2389 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2390 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2391 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2392 qeth_ulp_enable_cb, &max_mtu);
2393 if (rc)
2394 return rc;
2395 return qeth_update_max_mtu(card, max_mtu);
2396 }
2397
qeth_ulp_setup_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2398 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2399 unsigned long data)
2400 {
2401 struct qeth_cmd_buffer *iob;
2402
2403 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2404
2405 iob = (struct qeth_cmd_buffer *) data;
2406 memcpy(&card->token.ulp_connection_r,
2407 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2408 QETH_MPC_TOKEN_LENGTH);
2409 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2410 3)) {
2411 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2412 dev_err(&card->gdev->dev, "A connection could not be "
2413 "established because of an OLM limit\n");
2414 iob->rc = -EMLINK;
2415 }
2416 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2417 return 0;
2418 }
2419
qeth_ulp_setup(struct qeth_card * card)2420 static int qeth_ulp_setup(struct qeth_card *card)
2421 {
2422 int rc;
2423 __u16 temp;
2424 struct qeth_cmd_buffer *iob;
2425 struct ccw_dev_id dev_id;
2426
2427 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2428
2429 iob = qeth_wait_for_buffer(&card->write);
2430 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2431
2432 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2433 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2434 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2435 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2436 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2437 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2438
2439 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2440 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2441 temp = (card->info.cula << 8) + card->info.unit_addr2;
2442 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2443 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2444 qeth_ulp_setup_cb, NULL);
2445 return rc;
2446 }
2447
qeth_init_qdio_out_buf(struct qeth_qdio_out_q * q,int bidx)2448 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2449 {
2450 struct qeth_qdio_out_buffer *newbuf;
2451
2452 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2453 if (!newbuf)
2454 return -ENOMEM;
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->next_pending = q->bufs[bidx];
2461 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2462 q->bufs[bidx] = newbuf;
2463 return 0;
2464 }
2465
qeth_free_output_queue(struct qeth_qdio_out_q * q)2466 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2467 {
2468 if (!q)
2469 return;
2470
2471 qeth_clear_outq_buffers(q, 1);
2472 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2473 kfree(q);
2474 }
2475
qeth_alloc_qdio_out_buf(void)2476 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2477 {
2478 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2479
2480 if (!q)
2481 return NULL;
2482
2483 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2484 kfree(q);
2485 return NULL;
2486 }
2487 return q;
2488 }
2489
qeth_alloc_qdio_buffers(struct qeth_card * card)2490 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2491 {
2492 int i, j;
2493
2494 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2495
2496 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2497 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2498 return 0;
2499
2500 QETH_DBF_TEXT(SETUP, 2, "inq");
2501 card->qdio.in_q = qeth_alloc_qdio_queue();
2502 if (!card->qdio.in_q)
2503 goto out_nomem;
2504
2505 /* inbound buffer pool */
2506 if (qeth_alloc_buffer_pool(card))
2507 goto out_freeinq;
2508
2509 /* outbound */
2510 card->qdio.out_qs =
2511 kcalloc(card->qdio.no_out_queues,
2512 sizeof(struct qeth_qdio_out_q *),
2513 GFP_KERNEL);
2514 if (!card->qdio.out_qs)
2515 goto out_freepool;
2516 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2517 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2518 if (!card->qdio.out_qs[i])
2519 goto out_freeoutq;
2520 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2521 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2522 card->qdio.out_qs[i]->queue_no = i;
2523 /* give outbound qeth_qdio_buffers their qdio_buffers */
2524 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2525 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2526 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2527 goto out_freeoutqbufs;
2528 }
2529 }
2530
2531 /* completion */
2532 if (qeth_alloc_cq(card))
2533 goto out_freeoutq;
2534
2535 return 0;
2536
2537 out_freeoutqbufs:
2538 while (j > 0) {
2539 --j;
2540 kmem_cache_free(qeth_qdio_outbuf_cache,
2541 card->qdio.out_qs[i]->bufs[j]);
2542 card->qdio.out_qs[i]->bufs[j] = NULL;
2543 }
2544 out_freeoutq:
2545 while (i > 0)
2546 qeth_free_output_queue(card->qdio.out_qs[--i]);
2547 kfree(card->qdio.out_qs);
2548 card->qdio.out_qs = NULL;
2549 out_freepool:
2550 qeth_free_buffer_pool(card);
2551 out_freeinq:
2552 qeth_free_qdio_queue(card->qdio.in_q);
2553 card->qdio.in_q = NULL;
2554 out_nomem:
2555 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2556 return -ENOMEM;
2557 }
2558
qeth_free_qdio_buffers(struct qeth_card * card)2559 static void qeth_free_qdio_buffers(struct qeth_card *card)
2560 {
2561 int i, j;
2562
2563 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2564 QETH_QDIO_UNINITIALIZED)
2565 return;
2566
2567 qeth_free_cq(card);
2568 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2569 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2570 if (card->qdio.in_q->bufs[j].rx_skb)
2571 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2572 }
2573 qeth_free_qdio_queue(card->qdio.in_q);
2574 card->qdio.in_q = NULL;
2575 /* inbound buffer pool */
2576 qeth_free_buffer_pool(card);
2577 /* free outbound qdio_qs */
2578 if (card->qdio.out_qs) {
2579 for (i = 0; i < card->qdio.no_out_queues; i++)
2580 qeth_free_output_queue(card->qdio.out_qs[i]);
2581 kfree(card->qdio.out_qs);
2582 card->qdio.out_qs = NULL;
2583 }
2584 }
2585
qeth_create_qib_param_field(struct qeth_card * card,char * param_field)2586 static void qeth_create_qib_param_field(struct qeth_card *card,
2587 char *param_field)
2588 {
2589
2590 param_field[0] = _ascebc['P'];
2591 param_field[1] = _ascebc['C'];
2592 param_field[2] = _ascebc['I'];
2593 param_field[3] = _ascebc['T'];
2594 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2595 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2596 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2597 }
2598
qeth_create_qib_param_field_blkt(struct qeth_card * card,char * param_field)2599 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2600 char *param_field)
2601 {
2602 param_field[16] = _ascebc['B'];
2603 param_field[17] = _ascebc['L'];
2604 param_field[18] = _ascebc['K'];
2605 param_field[19] = _ascebc['T'];
2606 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2607 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2608 *((unsigned int *) (¶m_field[28])) =
2609 card->info.blkt.inter_packet_jumbo;
2610 }
2611
qeth_qdio_activate(struct qeth_card * card)2612 static int qeth_qdio_activate(struct qeth_card *card)
2613 {
2614 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2615 return qdio_activate(CARD_DDEV(card));
2616 }
2617
qeth_dm_act(struct qeth_card * card)2618 static int qeth_dm_act(struct qeth_card *card)
2619 {
2620 int rc;
2621 struct qeth_cmd_buffer *iob;
2622
2623 QETH_DBF_TEXT(SETUP, 2, "dmact");
2624
2625 iob = qeth_wait_for_buffer(&card->write);
2626 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2627
2628 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2629 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2630 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2631 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2632 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2633 return rc;
2634 }
2635
qeth_mpc_initialize(struct qeth_card * card)2636 static int qeth_mpc_initialize(struct qeth_card *card)
2637 {
2638 int rc;
2639
2640 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2641
2642 rc = qeth_issue_next_read(card);
2643 if (rc) {
2644 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2645 return rc;
2646 }
2647 rc = qeth_cm_enable(card);
2648 if (rc) {
2649 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2650 goto out_qdio;
2651 }
2652 rc = qeth_cm_setup(card);
2653 if (rc) {
2654 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2655 goto out_qdio;
2656 }
2657 rc = qeth_ulp_enable(card);
2658 if (rc) {
2659 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2660 goto out_qdio;
2661 }
2662 rc = qeth_ulp_setup(card);
2663 if (rc) {
2664 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2665 goto out_qdio;
2666 }
2667 rc = qeth_alloc_qdio_buffers(card);
2668 if (rc) {
2669 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2670 goto out_qdio;
2671 }
2672 rc = qeth_qdio_establish(card);
2673 if (rc) {
2674 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2675 qeth_free_qdio_buffers(card);
2676 goto out_qdio;
2677 }
2678 rc = qeth_qdio_activate(card);
2679 if (rc) {
2680 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2681 goto out_qdio;
2682 }
2683 rc = qeth_dm_act(card);
2684 if (rc) {
2685 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2686 goto out_qdio;
2687 }
2688
2689 return 0;
2690 out_qdio:
2691 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2692 qdio_free(CARD_DDEV(card));
2693 return rc;
2694 }
2695
qeth_print_status_message(struct qeth_card * card)2696 void qeth_print_status_message(struct qeth_card *card)
2697 {
2698 switch (card->info.type) {
2699 case QETH_CARD_TYPE_OSD:
2700 case QETH_CARD_TYPE_OSM:
2701 case QETH_CARD_TYPE_OSX:
2702 /* VM will use a non-zero first character
2703 * to indicate a HiperSockets like reporting
2704 * of the level OSA sets the first character to zero
2705 * */
2706 if (!card->info.mcl_level[0]) {
2707 sprintf(card->info.mcl_level, "%02x%02x",
2708 card->info.mcl_level[2],
2709 card->info.mcl_level[3]);
2710 break;
2711 }
2712 /* fallthrough */
2713 case QETH_CARD_TYPE_IQD:
2714 if ((card->info.guestlan) ||
2715 (card->info.mcl_level[0] & 0x80)) {
2716 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2717 card->info.mcl_level[0]];
2718 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2719 card->info.mcl_level[1]];
2720 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2721 card->info.mcl_level[2]];
2722 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2723 card->info.mcl_level[3]];
2724 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2725 }
2726 break;
2727 default:
2728 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2729 }
2730 dev_info(&card->gdev->dev,
2731 "Device is a%s card%s%s%s\nwith link type %s.\n",
2732 qeth_get_cardname(card),
2733 (card->info.mcl_level[0]) ? " (level: " : "",
2734 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2735 (card->info.mcl_level[0]) ? ")" : "",
2736 qeth_get_cardname_short(card));
2737 }
2738 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2739
qeth_initialize_working_pool_list(struct qeth_card * card)2740 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2741 {
2742 struct qeth_buffer_pool_entry *entry;
2743
2744 QETH_CARD_TEXT(card, 5, "inwrklst");
2745
2746 list_for_each_entry(entry,
2747 &card->qdio.init_pool.entry_list, init_list) {
2748 qeth_put_buffer_pool_entry(card, entry);
2749 }
2750 }
2751
qeth_find_free_buffer_pool_entry(struct qeth_card * card)2752 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2753 struct qeth_card *card)
2754 {
2755 struct list_head *plh;
2756 struct qeth_buffer_pool_entry *entry;
2757 int i, free;
2758 struct page *page;
2759
2760 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2761 return NULL;
2762
2763 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2764 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2765 free = 1;
2766 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2767 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2768 free = 0;
2769 break;
2770 }
2771 }
2772 if (free) {
2773 list_del_init(&entry->list);
2774 return entry;
2775 }
2776 }
2777
2778 /* no free buffer in pool so take first one and swap pages */
2779 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2780 struct qeth_buffer_pool_entry, list);
2781 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2782 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2783 page = alloc_page(GFP_ATOMIC);
2784 if (!page) {
2785 return NULL;
2786 } else {
2787 free_page((unsigned long)entry->elements[i]);
2788 entry->elements[i] = page_address(page);
2789 if (card->options.performance_stats)
2790 card->perf_stats.sg_alloc_page_rx++;
2791 }
2792 }
2793 }
2794 list_del_init(&entry->list);
2795 return entry;
2796 }
2797
qeth_init_input_buffer(struct qeth_card * card,struct qeth_qdio_buffer * buf)2798 static int qeth_init_input_buffer(struct qeth_card *card,
2799 struct qeth_qdio_buffer *buf)
2800 {
2801 struct qeth_buffer_pool_entry *pool_entry;
2802 int i;
2803
2804 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2805 buf->rx_skb = netdev_alloc_skb(card->dev,
2806 QETH_RX_PULL_LEN + ETH_HLEN);
2807 if (!buf->rx_skb)
2808 return -ENOMEM;
2809 }
2810
2811 pool_entry = qeth_find_free_buffer_pool_entry(card);
2812 if (!pool_entry)
2813 return -ENOBUFS;
2814
2815 /*
2816 * since the buffer is accessed only from the input_tasklet
2817 * there shouldn't be a need to synchronize; also, since we use
2818 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2819 * buffers
2820 */
2821
2822 buf->pool_entry = pool_entry;
2823 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2824 buf->buffer->element[i].length = PAGE_SIZE;
2825 buf->buffer->element[i].addr = pool_entry->elements[i];
2826 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2827 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2828 else
2829 buf->buffer->element[i].eflags = 0;
2830 buf->buffer->element[i].sflags = 0;
2831 }
2832 return 0;
2833 }
2834
qeth_init_qdio_queues(struct qeth_card * card)2835 int qeth_init_qdio_queues(struct qeth_card *card)
2836 {
2837 int i, j;
2838 int rc;
2839
2840 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2841
2842 /* inbound queue */
2843 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2844 memset(&card->rx, 0, sizeof(struct qeth_rx));
2845
2846 qeth_initialize_working_pool_list(card);
2847 /*give only as many buffers to hardware as we have buffer pool entries*/
2848 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; i++) {
2849 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2850 if (rc)
2851 return rc;
2852 }
2853
2854 card->qdio.in_q->next_buf_to_init =
2855 card->qdio.in_buf_pool.buf_count - 1;
2856 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2857 card->qdio.in_buf_pool.buf_count - 1);
2858 if (rc) {
2859 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2860 return rc;
2861 }
2862
2863 /* completion */
2864 rc = qeth_cq_init(card);
2865 if (rc) {
2866 return rc;
2867 }
2868
2869 /* outbound queue */
2870 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2871 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2872 QDIO_MAX_BUFFERS_PER_Q);
2873 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2874 qeth_clear_output_buffer(card->qdio.out_qs[i],
2875 card->qdio.out_qs[i]->bufs[j]);
2876 }
2877 card->qdio.out_qs[i]->card = card;
2878 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2879 card->qdio.out_qs[i]->do_pack = 0;
2880 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2881 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2882 atomic_set(&card->qdio.out_qs[i]->state,
2883 QETH_OUT_Q_UNLOCKED);
2884 }
2885 return 0;
2886 }
2887 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2888
qeth_get_ipa_adp_type(enum qeth_link_types link_type)2889 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2890 {
2891 switch (link_type) {
2892 case QETH_LINK_TYPE_HSTR:
2893 return 2;
2894 default:
2895 return 1;
2896 }
2897 }
2898
qeth_fill_ipacmd_header(struct qeth_card * card,struct qeth_ipa_cmd * cmd,__u8 command,enum qeth_prot_versions prot)2899 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2900 struct qeth_ipa_cmd *cmd, __u8 command,
2901 enum qeth_prot_versions prot)
2902 {
2903 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2904 cmd->hdr.command = command;
2905 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2906 /* cmd->hdr.seqno is set by qeth_send_control_data() */
2907 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2908 cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port;
2909 if (card->options.layer2)
2910 cmd->hdr.prim_version_no = 2;
2911 else
2912 cmd->hdr.prim_version_no = 1;
2913 cmd->hdr.param_count = 1;
2914 cmd->hdr.prot_version = prot;
2915 cmd->hdr.ipa_supported = 0;
2916 cmd->hdr.ipa_enabled = 0;
2917 }
2918
qeth_get_ipacmd_buffer(struct qeth_card * card,enum qeth_ipa_cmds ipacmd,enum qeth_prot_versions prot)2919 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2920 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2921 {
2922 struct qeth_cmd_buffer *iob;
2923
2924 iob = qeth_get_buffer(&card->write);
2925 if (iob) {
2926 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot);
2927 } else {
2928 dev_warn(&card->gdev->dev,
2929 "The qeth driver ran out of channel command buffers\n");
2930 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2931 dev_name(&card->gdev->dev));
2932 }
2933
2934 return iob;
2935 }
2936 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2937
qeth_prepare_ipa_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob)2938 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob)
2939 {
2940 u8 prot_type = qeth_mpc_select_prot_type(card);
2941
2942 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2943 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2944 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2945 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2946 }
2947 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2948
2949 /**
2950 * qeth_send_ipa_cmd() - send an IPA command
2951 *
2952 * See qeth_send_control_data() for explanation of the arguments.
2953 */
2954
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)2955 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2956 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2957 unsigned long),
2958 void *reply_param)
2959 {
2960 int rc;
2961
2962 QETH_CARD_TEXT(card, 4, "sendipa");
2963 qeth_prepare_ipa_cmd(card, iob);
2964 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2965 iob, reply_cb, reply_param);
2966 if (rc == -ETIME) {
2967 qeth_clear_ipacmd_list(card);
2968 qeth_schedule_recovery(card);
2969 }
2970 return rc;
2971 }
2972 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2973
qeth_send_startlan(struct qeth_card * card)2974 static int qeth_send_startlan(struct qeth_card *card)
2975 {
2976 int rc;
2977 struct qeth_cmd_buffer *iob;
2978
2979 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2980
2981 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2982 if (!iob)
2983 return -ENOMEM;
2984 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2985 return rc;
2986 }
2987
qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd * cmd)2988 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2989 {
2990 if (!cmd->hdr.return_code)
2991 cmd->hdr.return_code =
2992 cmd->data.setadapterparms.hdr.return_code;
2993 return cmd->hdr.return_code;
2994 }
2995
qeth_query_setadapterparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2996 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2997 struct qeth_reply *reply, unsigned long data)
2998 {
2999 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3000
3001 QETH_CARD_TEXT(card, 3, "quyadpcb");
3002 if (qeth_setadpparms_inspect_rc(cmd))
3003 return 0;
3004
3005 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3006 card->info.link_type =
3007 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3008 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3009 }
3010 card->options.adp.supported_funcs =
3011 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3012 return 0;
3013 }
3014
qeth_get_adapter_cmd(struct qeth_card * card,__u32 command,__u32 cmdlen)3015 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3016 __u32 command, __u32 cmdlen)
3017 {
3018 struct qeth_cmd_buffer *iob;
3019 struct qeth_ipa_cmd *cmd;
3020
3021 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3022 QETH_PROT_IPV4);
3023 if (iob) {
3024 cmd = __ipa_cmd(iob);
3025 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3026 cmd->data.setadapterparms.hdr.command_code = command;
3027 cmd->data.setadapterparms.hdr.used_total = 1;
3028 cmd->data.setadapterparms.hdr.seq_no = 1;
3029 }
3030
3031 return iob;
3032 }
3033
qeth_query_setadapterparms(struct qeth_card * card)3034 static int qeth_query_setadapterparms(struct qeth_card *card)
3035 {
3036 int rc;
3037 struct qeth_cmd_buffer *iob;
3038
3039 QETH_CARD_TEXT(card, 3, "queryadp");
3040 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3041 sizeof(struct qeth_ipacmd_setadpparms));
3042 if (!iob)
3043 return -ENOMEM;
3044 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3045 return rc;
3046 }
3047
qeth_query_ipassists_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3048 static int qeth_query_ipassists_cb(struct qeth_card *card,
3049 struct qeth_reply *reply, unsigned long data)
3050 {
3051 struct qeth_ipa_cmd *cmd;
3052
3053 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3054
3055 cmd = (struct qeth_ipa_cmd *) data;
3056
3057 switch (cmd->hdr.return_code) {
3058 case IPA_RC_NOTSUPP:
3059 case IPA_RC_L2_UNSUPPORTED_CMD:
3060 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3061 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3062 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3063 return -0;
3064 default:
3065 if (cmd->hdr.return_code) {
3066 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3067 "rc=%d\n",
3068 dev_name(&card->gdev->dev),
3069 cmd->hdr.return_code);
3070 return 0;
3071 }
3072 }
3073
3074 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3075 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3076 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3077 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3078 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3079 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3080 } else
3081 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3082 "\n", dev_name(&card->gdev->dev));
3083 return 0;
3084 }
3085
qeth_query_ipassists(struct qeth_card * card,enum qeth_prot_versions prot)3086 static int qeth_query_ipassists(struct qeth_card *card,
3087 enum qeth_prot_versions prot)
3088 {
3089 int rc;
3090 struct qeth_cmd_buffer *iob;
3091
3092 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3093 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3094 if (!iob)
3095 return -ENOMEM;
3096 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3097 return rc;
3098 }
3099
qeth_query_switch_attributes_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3100 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3101 struct qeth_reply *reply, unsigned long data)
3102 {
3103 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3104 struct qeth_query_switch_attributes *attrs;
3105 struct qeth_switch_info *sw_info;
3106
3107 QETH_CARD_TEXT(card, 2, "qswiatcb");
3108 if (qeth_setadpparms_inspect_rc(cmd))
3109 return 0;
3110
3111 sw_info = (struct qeth_switch_info *)reply->param;
3112 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3113 sw_info->capabilities = attrs->capabilities;
3114 sw_info->settings = attrs->settings;
3115 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3116 sw_info->settings);
3117 return 0;
3118 }
3119
qeth_query_switch_attributes(struct qeth_card * card,struct qeth_switch_info * sw_info)3120 int qeth_query_switch_attributes(struct qeth_card *card,
3121 struct qeth_switch_info *sw_info)
3122 {
3123 struct qeth_cmd_buffer *iob;
3124
3125 QETH_CARD_TEXT(card, 2, "qswiattr");
3126 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3127 return -EOPNOTSUPP;
3128 if (!netif_carrier_ok(card->dev))
3129 return -ENOMEDIUM;
3130 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3131 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3132 if (!iob)
3133 return -ENOMEM;
3134 return qeth_send_ipa_cmd(card, iob,
3135 qeth_query_switch_attributes_cb, sw_info);
3136 }
3137
qeth_query_setdiagass_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3138 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3139 struct qeth_reply *reply, unsigned long data)
3140 {
3141 struct qeth_ipa_cmd *cmd;
3142 __u16 rc;
3143
3144 cmd = (struct qeth_ipa_cmd *)data;
3145 rc = cmd->hdr.return_code;
3146 if (rc)
3147 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3148 else
3149 card->info.diagass_support = cmd->data.diagass.ext;
3150 return 0;
3151 }
3152
qeth_query_setdiagass(struct qeth_card * card)3153 static int qeth_query_setdiagass(struct qeth_card *card)
3154 {
3155 struct qeth_cmd_buffer *iob;
3156 struct qeth_ipa_cmd *cmd;
3157
3158 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3159 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3160 if (!iob)
3161 return -ENOMEM;
3162 cmd = __ipa_cmd(iob);
3163 cmd->data.diagass.subcmd_len = 16;
3164 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3165 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3166 }
3167
qeth_get_trap_id(struct qeth_card * card,struct qeth_trap_id * tid)3168 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3169 {
3170 unsigned long info = get_zeroed_page(GFP_KERNEL);
3171 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3172 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3173 struct ccw_dev_id ccwid;
3174 int level;
3175
3176 tid->chpid = card->info.chpid;
3177 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3178 tid->ssid = ccwid.ssid;
3179 tid->devno = ccwid.devno;
3180 if (!info)
3181 return;
3182 level = stsi(NULL, 0, 0, 0);
3183 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3184 tid->lparnr = info222->lpar_number;
3185 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3186 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3187 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3188 }
3189 free_page(info);
3190 return;
3191 }
3192
qeth_hw_trap_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3193 static int qeth_hw_trap_cb(struct qeth_card *card,
3194 struct qeth_reply *reply, unsigned long data)
3195 {
3196 struct qeth_ipa_cmd *cmd;
3197 __u16 rc;
3198
3199 cmd = (struct qeth_ipa_cmd *)data;
3200 rc = cmd->hdr.return_code;
3201 if (rc)
3202 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3203 return 0;
3204 }
3205
qeth_hw_trap(struct qeth_card * card,enum qeth_diags_trap_action action)3206 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3207 {
3208 struct qeth_cmd_buffer *iob;
3209 struct qeth_ipa_cmd *cmd;
3210
3211 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3212 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3213 if (!iob)
3214 return -ENOMEM;
3215 cmd = __ipa_cmd(iob);
3216 cmd->data.diagass.subcmd_len = 80;
3217 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3218 cmd->data.diagass.type = 1;
3219 cmd->data.diagass.action = action;
3220 switch (action) {
3221 case QETH_DIAGS_TRAP_ARM:
3222 cmd->data.diagass.options = 0x0003;
3223 cmd->data.diagass.ext = 0x00010000 +
3224 sizeof(struct qeth_trap_id);
3225 qeth_get_trap_id(card,
3226 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3227 break;
3228 case QETH_DIAGS_TRAP_DISARM:
3229 cmd->data.diagass.options = 0x0001;
3230 break;
3231 case QETH_DIAGS_TRAP_CAPTURE:
3232 break;
3233 }
3234 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3235 }
3236 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3237
qeth_check_qdio_errors(struct qeth_card * card,struct qdio_buffer * buf,unsigned int qdio_error,const char * dbftext)3238 static int qeth_check_qdio_errors(struct qeth_card *card,
3239 struct qdio_buffer *buf,
3240 unsigned int qdio_error,
3241 const char *dbftext)
3242 {
3243 if (qdio_error) {
3244 QETH_CARD_TEXT(card, 2, dbftext);
3245 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3246 buf->element[15].sflags);
3247 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3248 buf->element[14].sflags);
3249 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3250 if ((buf->element[15].sflags) == 0x12) {
3251 card->stats.rx_dropped++;
3252 return 0;
3253 } else
3254 return 1;
3255 }
3256 return 0;
3257 }
3258
qeth_queue_input_buffer(struct qeth_card * card,int index)3259 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3260 {
3261 struct qeth_qdio_q *queue = card->qdio.in_q;
3262 struct list_head *lh;
3263 int count;
3264 int i;
3265 int rc;
3266 int newcount = 0;
3267
3268 count = (index < queue->next_buf_to_init)?
3269 card->qdio.in_buf_pool.buf_count -
3270 (queue->next_buf_to_init - index) :
3271 card->qdio.in_buf_pool.buf_count -
3272 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3273 /* only requeue at a certain threshold to avoid SIGAs */
3274 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3275 for (i = queue->next_buf_to_init;
3276 i < queue->next_buf_to_init + count; ++i) {
3277 if (qeth_init_input_buffer(card,
3278 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3279 break;
3280 } else {
3281 newcount++;
3282 }
3283 }
3284
3285 if (newcount < count) {
3286 /* we are in memory shortage so we switch back to
3287 traditional skb allocation and drop packages */
3288 atomic_set(&card->force_alloc_skb, 3);
3289 count = newcount;
3290 } else {
3291 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3292 }
3293
3294 if (!count) {
3295 i = 0;
3296 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3297 i++;
3298 if (i == card->qdio.in_buf_pool.buf_count) {
3299 QETH_CARD_TEXT(card, 2, "qsarbw");
3300 card->reclaim_index = index;
3301 schedule_delayed_work(
3302 &card->buffer_reclaim_work,
3303 QETH_RECLAIM_WORK_TIME);
3304 }
3305 return;
3306 }
3307
3308 /*
3309 * according to old code it should be avoided to requeue all
3310 * 128 buffers in order to benefit from PCI avoidance.
3311 * this function keeps at least one buffer (the buffer at
3312 * 'index') un-requeued -> this buffer is the first buffer that
3313 * will be requeued the next time
3314 */
3315 if (card->options.performance_stats) {
3316 card->perf_stats.inbound_do_qdio_cnt++;
3317 card->perf_stats.inbound_do_qdio_start_time =
3318 qeth_get_micros();
3319 }
3320 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3321 queue->next_buf_to_init, count);
3322 if (card->options.performance_stats)
3323 card->perf_stats.inbound_do_qdio_time +=
3324 qeth_get_micros() -
3325 card->perf_stats.inbound_do_qdio_start_time;
3326 if (rc) {
3327 QETH_CARD_TEXT(card, 2, "qinberr");
3328 }
3329 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3330 QDIO_MAX_BUFFERS_PER_Q;
3331 }
3332 }
3333
qeth_buffer_reclaim_work(struct work_struct * work)3334 static void qeth_buffer_reclaim_work(struct work_struct *work)
3335 {
3336 struct qeth_card *card = container_of(work, struct qeth_card,
3337 buffer_reclaim_work.work);
3338
3339 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3340 qeth_queue_input_buffer(card, card->reclaim_index);
3341 }
3342
qeth_handle_send_error(struct qeth_card * card,struct qeth_qdio_out_buffer * buffer,unsigned int qdio_err)3343 static void qeth_handle_send_error(struct qeth_card *card,
3344 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3345 {
3346 int sbalf15 = buffer->buffer->element[15].sflags;
3347
3348 QETH_CARD_TEXT(card, 6, "hdsnderr");
3349 if (card->info.type == QETH_CARD_TYPE_IQD) {
3350 if (sbalf15 == 0) {
3351 qdio_err = 0;
3352 } else {
3353 qdio_err = 1;
3354 }
3355 }
3356 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3357
3358 if (!qdio_err)
3359 return;
3360
3361 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3362 return;
3363
3364 QETH_CARD_TEXT(card, 1, "lnkfail");
3365 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3366 (u16)qdio_err, (u8)sbalf15);
3367 }
3368
3369 /**
3370 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3371 * @queue: queue to check for packing buffer
3372 *
3373 * Returns number of buffers that were prepared for flush.
3374 */
qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q * queue)3375 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3376 {
3377 struct qeth_qdio_out_buffer *buffer;
3378
3379 buffer = queue->bufs[queue->next_buf_to_fill];
3380 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3381 (buffer->next_element_to_fill > 0)) {
3382 /* it's a packing buffer */
3383 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3384 queue->next_buf_to_fill =
3385 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3386 return 1;
3387 }
3388 return 0;
3389 }
3390
3391 /*
3392 * Switched to packing state if the number of used buffers on a queue
3393 * reaches a certain limit.
3394 */
qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q * queue)3395 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3396 {
3397 if (!queue->do_pack) {
3398 if (atomic_read(&queue->used_buffers)
3399 >= QETH_HIGH_WATERMARK_PACK){
3400 /* switch non-PACKING -> PACKING */
3401 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3402 if (queue->card->options.performance_stats)
3403 queue->card->perf_stats.sc_dp_p++;
3404 queue->do_pack = 1;
3405 }
3406 }
3407 }
3408
3409 /*
3410 * Switches from packing to non-packing mode. If there is a packing
3411 * buffer on the queue this buffer will be prepared to be flushed.
3412 * In that case 1 is returned to inform the caller. If no buffer
3413 * has to be flushed, zero is returned.
3414 */
qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q * queue)3415 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3416 {
3417 if (queue->do_pack) {
3418 if (atomic_read(&queue->used_buffers)
3419 <= QETH_LOW_WATERMARK_PACK) {
3420 /* switch PACKING -> non-PACKING */
3421 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3422 if (queue->card->options.performance_stats)
3423 queue->card->perf_stats.sc_p_dp++;
3424 queue->do_pack = 0;
3425 return qeth_prep_flush_pack_buffer(queue);
3426 }
3427 }
3428 return 0;
3429 }
3430
qeth_flush_buffers(struct qeth_qdio_out_q * queue,int index,int count)3431 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3432 int count)
3433 {
3434 struct qeth_qdio_out_buffer *buf;
3435 int rc;
3436 int i;
3437 unsigned int qdio_flags;
3438
3439 for (i = index; i < index + count; ++i) {
3440 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3441 buf = queue->bufs[bidx];
3442 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3443 SBAL_EFLAGS_LAST_ENTRY;
3444
3445 if (queue->bufstates)
3446 queue->bufstates[bidx].user = buf;
3447
3448 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3449 continue;
3450
3451 if (!queue->do_pack) {
3452 if ((atomic_read(&queue->used_buffers) >=
3453 (QETH_HIGH_WATERMARK_PACK -
3454 QETH_WATERMARK_PACK_FUZZ)) &&
3455 !atomic_read(&queue->set_pci_flags_count)) {
3456 /* it's likely that we'll go to packing
3457 * mode soon */
3458 atomic_inc(&queue->set_pci_flags_count);
3459 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3460 }
3461 } else {
3462 if (!atomic_read(&queue->set_pci_flags_count)) {
3463 /*
3464 * there's no outstanding PCI any more, so we
3465 * have to request a PCI to be sure the the PCI
3466 * will wake at some time in the future then we
3467 * can flush packed buffers that might still be
3468 * hanging around, which can happen if no
3469 * further send was requested by the stack
3470 */
3471 atomic_inc(&queue->set_pci_flags_count);
3472 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3473 }
3474 }
3475 }
3476
3477 netif_trans_update(queue->card->dev);
3478 if (queue->card->options.performance_stats) {
3479 queue->card->perf_stats.outbound_do_qdio_cnt++;
3480 queue->card->perf_stats.outbound_do_qdio_start_time =
3481 qeth_get_micros();
3482 }
3483 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3484 if (atomic_read(&queue->set_pci_flags_count))
3485 qdio_flags |= QDIO_FLAG_PCI_OUT;
3486 atomic_add(count, &queue->used_buffers);
3487
3488 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3489 queue->queue_no, index, count);
3490 if (queue->card->options.performance_stats)
3491 queue->card->perf_stats.outbound_do_qdio_time +=
3492 qeth_get_micros() -
3493 queue->card->perf_stats.outbound_do_qdio_start_time;
3494 if (rc) {
3495 queue->card->stats.tx_errors += count;
3496 /* ignore temporary SIGA errors without busy condition */
3497 if (rc == -ENOBUFS)
3498 return;
3499 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3500 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3501 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3502 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3503 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3504
3505 /* this must not happen under normal circumstances. if it
3506 * happens something is really wrong -> recover */
3507 qeth_schedule_recovery(queue->card);
3508 return;
3509 }
3510 if (queue->card->options.performance_stats)
3511 queue->card->perf_stats.bufs_sent += count;
3512 }
3513
qeth_check_outbound_queue(struct qeth_qdio_out_q * queue)3514 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3515 {
3516 int index;
3517 int flush_cnt = 0;
3518 int q_was_packing = 0;
3519
3520 /*
3521 * check if weed have to switch to non-packing mode or if
3522 * we have to get a pci flag out on the queue
3523 */
3524 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3525 !atomic_read(&queue->set_pci_flags_count)) {
3526 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3527 QETH_OUT_Q_UNLOCKED) {
3528 /*
3529 * If we get in here, there was no action in
3530 * do_send_packet. So, we check if there is a
3531 * packing buffer to be flushed here.
3532 */
3533 netif_stop_queue(queue->card->dev);
3534 index = queue->next_buf_to_fill;
3535 q_was_packing = queue->do_pack;
3536 /* queue->do_pack may change */
3537 barrier();
3538 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3539 if (!flush_cnt &&
3540 !atomic_read(&queue->set_pci_flags_count))
3541 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3542 if (queue->card->options.performance_stats &&
3543 q_was_packing)
3544 queue->card->perf_stats.bufs_sent_pack +=
3545 flush_cnt;
3546 if (flush_cnt)
3547 qeth_flush_buffers(queue, index, flush_cnt);
3548 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3549 }
3550 }
3551 }
3552
qeth_qdio_start_poll(struct ccw_device * ccwdev,int queue,unsigned long card_ptr)3553 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3554 unsigned long card_ptr)
3555 {
3556 struct qeth_card *card = (struct qeth_card *)card_ptr;
3557
3558 if (card->dev->flags & IFF_UP)
3559 napi_schedule(&card->napi);
3560 }
3561
qeth_configure_cq(struct qeth_card * card,enum qeth_cq cq)3562 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3563 {
3564 int rc;
3565
3566 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3567 rc = -1;
3568 goto out;
3569 } else {
3570 if (card->options.cq == cq) {
3571 rc = 0;
3572 goto out;
3573 }
3574
3575 if (card->state != CARD_STATE_DOWN &&
3576 card->state != CARD_STATE_RECOVER) {
3577 rc = -1;
3578 goto out;
3579 }
3580
3581 qeth_free_qdio_buffers(card);
3582 card->options.cq = cq;
3583 rc = 0;
3584 }
3585 out:
3586 return rc;
3587
3588 }
3589 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3590
qeth_qdio_cq_handler(struct qeth_card * card,unsigned int qdio_err,unsigned int queue,int first_element,int count)3591 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3592 unsigned int queue, int first_element,
3593 int count)
3594 {
3595 struct qeth_qdio_q *cq = card->qdio.c_q;
3596 int i;
3597 int rc;
3598
3599 if (!qeth_is_cq(card, queue))
3600 goto out;
3601
3602 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3603 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3604 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3605
3606 if (qdio_err) {
3607 netif_stop_queue(card->dev);
3608 qeth_schedule_recovery(card);
3609 goto out;
3610 }
3611
3612 if (card->options.performance_stats) {
3613 card->perf_stats.cq_cnt++;
3614 card->perf_stats.cq_start_time = qeth_get_micros();
3615 }
3616
3617 for (i = first_element; i < first_element + count; ++i) {
3618 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3619 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3620 int e = 0;
3621
3622 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3623 buffer->element[e].addr) {
3624 unsigned long phys_aob_addr;
3625
3626 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3627 qeth_qdio_handle_aob(card, phys_aob_addr);
3628 ++e;
3629 }
3630 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3631 }
3632 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3633 card->qdio.c_q->next_buf_to_init,
3634 count);
3635 if (rc) {
3636 dev_warn(&card->gdev->dev,
3637 "QDIO reported an error, rc=%i\n", rc);
3638 QETH_CARD_TEXT(card, 2, "qcqherr");
3639 }
3640 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3641 + count) % QDIO_MAX_BUFFERS_PER_Q;
3642
3643 netif_wake_queue(card->dev);
3644
3645 if (card->options.performance_stats) {
3646 int delta_t = qeth_get_micros();
3647 delta_t -= card->perf_stats.cq_start_time;
3648 card->perf_stats.cq_time += delta_t;
3649 }
3650 out:
3651 return;
3652 }
3653
qeth_qdio_input_handler(struct ccw_device * ccwdev,unsigned int qdio_err,int queue,int first_elem,int count,unsigned long card_ptr)3654 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3655 unsigned int qdio_err, int queue,
3656 int first_elem, int count,
3657 unsigned long card_ptr)
3658 {
3659 struct qeth_card *card = (struct qeth_card *)card_ptr;
3660
3661 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3662 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3663
3664 if (qeth_is_cq(card, queue))
3665 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3666 else if (qdio_err)
3667 qeth_schedule_recovery(card);
3668 }
3669
qeth_qdio_output_handler(struct ccw_device * ccwdev,unsigned int qdio_error,int __queue,int first_element,int count,unsigned long card_ptr)3670 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3671 unsigned int qdio_error, int __queue,
3672 int first_element, int count,
3673 unsigned long card_ptr)
3674 {
3675 struct qeth_card *card = (struct qeth_card *) card_ptr;
3676 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3677 struct qeth_qdio_out_buffer *buffer;
3678 int i;
3679
3680 QETH_CARD_TEXT(card, 6, "qdouhdl");
3681 if (qdio_error & QDIO_ERROR_FATAL) {
3682 QETH_CARD_TEXT(card, 2, "achkcond");
3683 netif_stop_queue(card->dev);
3684 qeth_schedule_recovery(card);
3685 return;
3686 }
3687 if (card->options.performance_stats) {
3688 card->perf_stats.outbound_handler_cnt++;
3689 card->perf_stats.outbound_handler_start_time =
3690 qeth_get_micros();
3691 }
3692 for (i = first_element; i < (first_element + count); ++i) {
3693 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3694 buffer = queue->bufs[bidx];
3695 qeth_handle_send_error(card, buffer, qdio_error);
3696
3697 if (queue->bufstates &&
3698 (queue->bufstates[bidx].flags &
3699 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3700 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3701
3702 if (atomic_cmpxchg(&buffer->state,
3703 QETH_QDIO_BUF_PRIMED,
3704 QETH_QDIO_BUF_PENDING) ==
3705 QETH_QDIO_BUF_PRIMED) {
3706 qeth_notify_skbs(queue, buffer,
3707 TX_NOTIFY_PENDING);
3708 }
3709 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3710
3711 /* prepare the queue slot for re-use: */
3712 qeth_scrub_qdio_buffer(buffer->buffer,
3713 QETH_MAX_BUFFER_ELEMENTS(card));
3714 if (qeth_init_qdio_out_buf(queue, bidx)) {
3715 QETH_CARD_TEXT(card, 2, "outofbuf");
3716 qeth_schedule_recovery(card);
3717 }
3718 } else {
3719 if (card->options.cq == QETH_CQ_ENABLED) {
3720 enum iucv_tx_notify n;
3721
3722 n = qeth_compute_cq_notification(
3723 buffer->buffer->element[15].sflags, 0);
3724 qeth_notify_skbs(queue, buffer, n);
3725 }
3726
3727 qeth_clear_output_buffer(queue, buffer);
3728 }
3729 qeth_cleanup_handled_pending(queue, bidx, 0);
3730 }
3731 atomic_sub(count, &queue->used_buffers);
3732 /* check if we need to do something on this outbound queue */
3733 if (card->info.type != QETH_CARD_TYPE_IQD)
3734 qeth_check_outbound_queue(queue);
3735
3736 netif_wake_queue(queue->card->dev);
3737 if (card->options.performance_stats)
3738 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3739 card->perf_stats.outbound_handler_start_time;
3740 }
3741
3742 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
qeth_cut_iqd_prio(struct qeth_card * card,int queue_num)3743 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3744 {
3745 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3746 return 2;
3747 return queue_num;
3748 }
3749
3750 /**
3751 * Note: Function assumes that we have 4 outbound queues.
3752 */
qeth_get_priority_queue(struct qeth_card * card,struct sk_buff * skb,int ipv)3753 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3754 int ipv)
3755 {
3756 __be16 *tci;
3757 u8 tos;
3758
3759 switch (card->qdio.do_prio_queueing) {
3760 case QETH_PRIO_Q_ING_TOS:
3761 case QETH_PRIO_Q_ING_PREC:
3762 switch (ipv) {
3763 case 4:
3764 tos = ipv4_get_dsfield(ip_hdr(skb));
3765 break;
3766 case 6:
3767 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3768 break;
3769 default:
3770 return card->qdio.default_out_queue;
3771 }
3772 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3773 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3774 if (tos & IPTOS_MINCOST)
3775 return qeth_cut_iqd_prio(card, 3);
3776 if (tos & IPTOS_RELIABILITY)
3777 return 2;
3778 if (tos & IPTOS_THROUGHPUT)
3779 return 1;
3780 if (tos & IPTOS_LOWDELAY)
3781 return 0;
3782 break;
3783 case QETH_PRIO_Q_ING_SKB:
3784 if (skb->priority > 5)
3785 return 0;
3786 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3787 case QETH_PRIO_Q_ING_VLAN:
3788 tci = &((struct ethhdr *)skb->data)->h_proto;
3789 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3790 return qeth_cut_iqd_prio(card,
3791 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3792 break;
3793 default:
3794 break;
3795 }
3796 return card->qdio.default_out_queue;
3797 }
3798 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3799
3800 /**
3801 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3802 * @skb: SKB address
3803 *
3804 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3805 * fragmented part of the SKB. Returns zero for linear SKB.
3806 */
qeth_get_elements_for_frags(struct sk_buff * skb)3807 int qeth_get_elements_for_frags(struct sk_buff *skb)
3808 {
3809 int cnt, elements = 0;
3810
3811 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3812 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3813
3814 elements += qeth_get_elements_for_range(
3815 (addr_t)skb_frag_address(frag),
3816 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3817 }
3818 return elements;
3819 }
3820 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3821
qeth_count_elements(struct sk_buff * skb,int data_offset)3822 static unsigned int qeth_count_elements(struct sk_buff *skb, int data_offset)
3823 {
3824 unsigned int elements = qeth_get_elements_for_frags(skb);
3825 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3826 addr_t start = (addr_t)skb->data + data_offset;
3827
3828 if (start != end)
3829 elements += qeth_get_elements_for_range(start, end);
3830 return elements;
3831 }
3832
3833 /**
3834 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3835 * @card: qeth card structure, to check max. elems.
3836 * @skb: SKB address
3837 * @extra_elems: extra elems needed, to check against max.
3838 * @data_offset: range starts at skb->data + data_offset
3839 *
3840 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3841 * skb data, including linear part and fragments. Checks if the result plus
3842 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3843 * Note: extra_elems is not included in the returned result.
3844 */
qeth_get_elements_no(struct qeth_card * card,struct sk_buff * skb,int extra_elems,int data_offset)3845 int qeth_get_elements_no(struct qeth_card *card,
3846 struct sk_buff *skb, int extra_elems, int data_offset)
3847 {
3848 int elements = qeth_count_elements(skb, data_offset);
3849
3850 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3851 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3852 "(Number=%d / Length=%d). Discarded.\n",
3853 elements + extra_elems, skb->len);
3854 return 0;
3855 }
3856 return elements;
3857 }
3858 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3859
qeth_hdr_chk_and_bounce(struct sk_buff * skb,struct qeth_hdr ** hdr,int len)3860 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3861 {
3862 int hroom, inpage, rest;
3863
3864 if (((unsigned long)skb->data & PAGE_MASK) !=
3865 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3866 hroom = skb_headroom(skb);
3867 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3868 rest = len - inpage;
3869 if (rest > hroom)
3870 return 1;
3871 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3872 skb->data -= rest;
3873 skb->tail -= rest;
3874 *hdr = (struct qeth_hdr *)skb->data;
3875 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3876 }
3877 return 0;
3878 }
3879 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3880
3881 /**
3882 * qeth_add_hw_header() - add a HW header to an skb.
3883 * @skb: skb that the HW header should be added to.
3884 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3885 * it contains a valid pointer to a qeth_hdr.
3886 * @hdr_len: length of the HW header.
3887 * @proto_len: length of protocol headers that need to be in same page as the
3888 * HW header.
3889 *
3890 * Returns the pushed length. If the header can't be pushed on
3891 * (eg. because it would cross a page boundary), it is allocated from
3892 * the cache instead and 0 is returned.
3893 * The number of needed buffer elements is returned in @elements.
3894 * Error to create the hdr is indicated by returning with < 0.
3895 */
qeth_add_hw_header(struct qeth_card * card,struct sk_buff * skb,struct qeth_hdr ** hdr,unsigned int hdr_len,unsigned int proto_len,unsigned int * elements)3896 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb,
3897 struct qeth_hdr **hdr, unsigned int hdr_len,
3898 unsigned int proto_len, unsigned int *elements)
3899 {
3900 const unsigned int max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3901 const unsigned int contiguous = proto_len ? proto_len : 1;
3902 unsigned int __elements;
3903 addr_t start, end;
3904 bool push_ok;
3905 int rc;
3906
3907 check_layout:
3908 start = (addr_t)skb->data - hdr_len;
3909 end = (addr_t)skb->data;
3910
3911 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3912 /* Push HW header into same page as first protocol header. */
3913 push_ok = true;
3914 __elements = qeth_count_elements(skb, 0);
3915 } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) {
3916 /* Push HW header into a new page. */
3917 push_ok = true;
3918 __elements = 1 + qeth_count_elements(skb, 0);
3919 } else {
3920 /* Use header cache, copy protocol headers up. */
3921 push_ok = false;
3922 __elements = 1 + qeth_count_elements(skb, proto_len);
3923 }
3924
3925 /* Compress skb to fit into one IO buffer: */
3926 if (__elements > max_elements) {
3927 if (!skb_is_nonlinear(skb)) {
3928 /* Drop it, no easy way of shrinking it further. */
3929 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3930 max_elements, __elements, skb->len);
3931 return -E2BIG;
3932 }
3933
3934 rc = skb_linearize(skb);
3935 if (card->options.performance_stats) {
3936 if (rc)
3937 card->perf_stats.tx_linfail++;
3938 else
3939 card->perf_stats.tx_lin++;
3940 }
3941 if (rc)
3942 return rc;
3943
3944 /* Linearization changed the layout, re-evaluate: */
3945 goto check_layout;
3946 }
3947
3948 *elements = __elements;
3949 /* Add the header: */
3950 if (push_ok) {
3951 *hdr = skb_push(skb, hdr_len);
3952 return hdr_len;
3953 }
3954 /* fall back */
3955 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3956 if (!*hdr)
3957 return -ENOMEM;
3958 /* Copy protocol headers behind HW header: */
3959 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3960 return 0;
3961 }
3962 EXPORT_SYMBOL_GPL(qeth_add_hw_header);
3963
__qeth_fill_buffer(struct sk_buff * skb,struct qeth_qdio_out_buffer * buf,bool is_first_elem,unsigned int offset)3964 static void __qeth_fill_buffer(struct sk_buff *skb,
3965 struct qeth_qdio_out_buffer *buf,
3966 bool is_first_elem, unsigned int offset)
3967 {
3968 struct qdio_buffer *buffer = buf->buffer;
3969 int element = buf->next_element_to_fill;
3970 int length = skb_headlen(skb) - offset;
3971 char *data = skb->data + offset;
3972 int length_here, cnt;
3973
3974 /* map linear part into buffer element(s) */
3975 while (length > 0) {
3976 /* length_here is the remaining amount of data in this page */
3977 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3978 if (length < length_here)
3979 length_here = length;
3980
3981 buffer->element[element].addr = data;
3982 buffer->element[element].length = length_here;
3983 length -= length_here;
3984 if (is_first_elem) {
3985 is_first_elem = false;
3986 if (length || skb_is_nonlinear(skb))
3987 /* skb needs additional elements */
3988 buffer->element[element].eflags =
3989 SBAL_EFLAGS_FIRST_FRAG;
3990 else
3991 buffer->element[element].eflags = 0;
3992 } else {
3993 buffer->element[element].eflags =
3994 SBAL_EFLAGS_MIDDLE_FRAG;
3995 }
3996 data += length_here;
3997 element++;
3998 }
3999
4000 /* map page frags into buffer element(s) */
4001 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4002 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4003
4004 data = skb_frag_address(frag);
4005 length = skb_frag_size(frag);
4006 while (length > 0) {
4007 length_here = PAGE_SIZE -
4008 ((unsigned long) data % PAGE_SIZE);
4009 if (length < length_here)
4010 length_here = length;
4011
4012 buffer->element[element].addr = data;
4013 buffer->element[element].length = length_here;
4014 buffer->element[element].eflags =
4015 SBAL_EFLAGS_MIDDLE_FRAG;
4016 length -= length_here;
4017 data += length_here;
4018 element++;
4019 }
4020 }
4021
4022 if (buffer->element[element - 1].eflags)
4023 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4024 buf->next_element_to_fill = element;
4025 }
4026
4027 /**
4028 * qeth_fill_buffer() - map skb into an output buffer
4029 * @queue: QDIO queue to submit the buffer on
4030 * @buf: buffer to transport the skb
4031 * @skb: skb to map into the buffer
4032 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4033 * from qeth_core_header_cache.
4034 * @offset: when mapping the skb, start at skb->data + offset
4035 * @hd_len: if > 0, build a dedicated header element of this size
4036 */
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)4037 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4038 struct qeth_qdio_out_buffer *buf,
4039 struct sk_buff *skb, struct qeth_hdr *hdr,
4040 unsigned int offset, unsigned int hd_len)
4041 {
4042 struct qdio_buffer *buffer = buf->buffer;
4043 bool is_first_elem = true;
4044 int flush_cnt = 0;
4045
4046 refcount_inc(&skb->users);
4047 skb_queue_tail(&buf->skb_list, skb);
4048
4049 /* build dedicated header element */
4050 if (hd_len) {
4051 int element = buf->next_element_to_fill;
4052 is_first_elem = false;
4053
4054 buffer->element[element].addr = hdr;
4055 buffer->element[element].length = hd_len;
4056 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4057 /* remember to free cache-allocated qeth_hdr: */
4058 buf->is_header[element] = ((void *)hdr != skb->data);
4059 buf->next_element_to_fill++;
4060 }
4061
4062 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4063
4064 if (!queue->do_pack) {
4065 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4066 /* set state to PRIMED -> will be flushed */
4067 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4068 flush_cnt = 1;
4069 } else {
4070 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4071 if (queue->card->options.performance_stats)
4072 queue->card->perf_stats.skbs_sent_pack++;
4073 if (buf->next_element_to_fill >=
4074 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4075 /*
4076 * packed buffer if full -> set state PRIMED
4077 * -> will be flushed
4078 */
4079 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4080 flush_cnt = 1;
4081 }
4082 }
4083 return flush_cnt;
4084 }
4085
qeth_do_send_packet_fast(struct qeth_qdio_out_q * queue,struct sk_buff * skb,struct qeth_hdr * hdr,unsigned int offset,unsigned int hd_len)4086 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4087 struct qeth_hdr *hdr, unsigned int offset,
4088 unsigned int hd_len)
4089 {
4090 int index = queue->next_buf_to_fill;
4091 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4092
4093 /*
4094 * check if buffer is empty to make sure that we do not 'overtake'
4095 * ourselves and try to fill a buffer that is already primed
4096 */
4097 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4098 return -EBUSY;
4099 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4100 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4101 qeth_flush_buffers(queue, index, 1);
4102 return 0;
4103 }
4104 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4105
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)4106 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4107 struct sk_buff *skb, struct qeth_hdr *hdr,
4108 unsigned int offset, unsigned int hd_len,
4109 int elements_needed)
4110 {
4111 struct qeth_qdio_out_buffer *buffer;
4112 int start_index;
4113 int flush_count = 0;
4114 int do_pack = 0;
4115 int tmp;
4116 int rc = 0;
4117
4118 /* spin until we get the queue ... */
4119 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4120 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4121 start_index = queue->next_buf_to_fill;
4122 buffer = queue->bufs[queue->next_buf_to_fill];
4123 /*
4124 * check if buffer is empty to make sure that we do not 'overtake'
4125 * ourselves and try to fill a buffer that is already primed
4126 */
4127 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4128 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4129 return -EBUSY;
4130 }
4131 /* check if we need to switch packing state of this queue */
4132 qeth_switch_to_packing_if_needed(queue);
4133 if (queue->do_pack) {
4134 do_pack = 1;
4135 /* does packet fit in current buffer? */
4136 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4137 buffer->next_element_to_fill) < elements_needed) {
4138 /* ... no -> set state PRIMED */
4139 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4140 flush_count++;
4141 queue->next_buf_to_fill =
4142 (queue->next_buf_to_fill + 1) %
4143 QDIO_MAX_BUFFERS_PER_Q;
4144 buffer = queue->bufs[queue->next_buf_to_fill];
4145 /* we did a step forward, so check buffer state
4146 * again */
4147 if (atomic_read(&buffer->state) !=
4148 QETH_QDIO_BUF_EMPTY) {
4149 qeth_flush_buffers(queue, start_index,
4150 flush_count);
4151 atomic_set(&queue->state,
4152 QETH_OUT_Q_UNLOCKED);
4153 rc = -EBUSY;
4154 goto out;
4155 }
4156 }
4157 }
4158 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4159 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4160 QDIO_MAX_BUFFERS_PER_Q;
4161 flush_count += tmp;
4162 if (flush_count)
4163 qeth_flush_buffers(queue, start_index, flush_count);
4164 else if (!atomic_read(&queue->set_pci_flags_count))
4165 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4166 /*
4167 * queue->state will go from LOCKED -> UNLOCKED or from
4168 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4169 * (switch packing state or flush buffer to get another pci flag out).
4170 * In that case we will enter this loop
4171 */
4172 while (atomic_dec_return(&queue->state)) {
4173 start_index = queue->next_buf_to_fill;
4174 /* check if we can go back to non-packing state */
4175 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4176 /*
4177 * check if we need to flush a packing buffer to get a pci
4178 * flag out on the queue
4179 */
4180 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4181 tmp = qeth_prep_flush_pack_buffer(queue);
4182 if (tmp) {
4183 qeth_flush_buffers(queue, start_index, tmp);
4184 flush_count += tmp;
4185 }
4186 }
4187 out:
4188 /* at this point the queue is UNLOCKED again */
4189 if (queue->card->options.performance_stats && do_pack)
4190 queue->card->perf_stats.bufs_sent_pack += flush_count;
4191
4192 return rc;
4193 }
4194 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4195
qeth_setadp_promisc_mode_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4196 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4197 struct qeth_reply *reply, unsigned long data)
4198 {
4199 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4200 struct qeth_ipacmd_setadpparms *setparms;
4201
4202 QETH_CARD_TEXT(card, 4, "prmadpcb");
4203
4204 setparms = &(cmd->data.setadapterparms);
4205 if (qeth_setadpparms_inspect_rc(cmd)) {
4206 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4207 setparms->data.mode = SET_PROMISC_MODE_OFF;
4208 }
4209 card->info.promisc_mode = setparms->data.mode;
4210 return 0;
4211 }
4212
qeth_setadp_promisc_mode(struct qeth_card * card)4213 void qeth_setadp_promisc_mode(struct qeth_card *card)
4214 {
4215 enum qeth_ipa_promisc_modes mode;
4216 struct net_device *dev = card->dev;
4217 struct qeth_cmd_buffer *iob;
4218 struct qeth_ipa_cmd *cmd;
4219
4220 QETH_CARD_TEXT(card, 4, "setprom");
4221
4222 if (((dev->flags & IFF_PROMISC) &&
4223 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4224 (!(dev->flags & IFF_PROMISC) &&
4225 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4226 return;
4227 mode = SET_PROMISC_MODE_OFF;
4228 if (dev->flags & IFF_PROMISC)
4229 mode = SET_PROMISC_MODE_ON;
4230 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4231
4232 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4233 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4234 if (!iob)
4235 return;
4236 cmd = __ipa_cmd(iob);
4237 cmd->data.setadapterparms.data.mode = mode;
4238 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4239 }
4240 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
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 ether_addr_copy(card->dev->dev_addr,
4266 cmd->data.setadapterparms.data.change_addr.addr);
4267 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4268 }
4269 return 0;
4270 }
4271
qeth_setadpparms_change_macaddr(struct qeth_card * card)4272 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4273 {
4274 int rc;
4275 struct qeth_cmd_buffer *iob;
4276 struct qeth_ipa_cmd *cmd;
4277
4278 QETH_CARD_TEXT(card, 4, "chgmac");
4279
4280 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4281 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4282 sizeof(struct qeth_change_addr));
4283 if (!iob)
4284 return -ENOMEM;
4285 cmd = __ipa_cmd(iob);
4286 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4287 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4288 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4289 card->dev->dev_addr);
4290 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4291 NULL);
4292 return rc;
4293 }
4294 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4295
qeth_setadpparms_set_access_ctrl_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4296 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4297 struct qeth_reply *reply, unsigned long data)
4298 {
4299 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4300 struct qeth_set_access_ctrl *access_ctrl_req;
4301 int fallback = *(int *)reply->param;
4302
4303 QETH_CARD_TEXT(card, 4, "setaccb");
4304 if (cmd->hdr.return_code)
4305 return 0;
4306 qeth_setadpparms_inspect_rc(cmd);
4307
4308 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4309 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4310 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4311 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4312 cmd->data.setadapterparms.hdr.return_code);
4313 if (cmd->data.setadapterparms.hdr.return_code !=
4314 SET_ACCESS_CTRL_RC_SUCCESS)
4315 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4316 card->gdev->dev.kobj.name,
4317 access_ctrl_req->subcmd_code,
4318 cmd->data.setadapterparms.hdr.return_code);
4319 switch (cmd->data.setadapterparms.hdr.return_code) {
4320 case SET_ACCESS_CTRL_RC_SUCCESS:
4321 if (card->options.isolation == ISOLATION_MODE_NONE) {
4322 dev_info(&card->gdev->dev,
4323 "QDIO data connection isolation is deactivated\n");
4324 } else {
4325 dev_info(&card->gdev->dev,
4326 "QDIO data connection isolation is activated\n");
4327 }
4328 break;
4329 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4330 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4331 "deactivated\n", dev_name(&card->gdev->dev));
4332 if (fallback)
4333 card->options.isolation = card->options.prev_isolation;
4334 break;
4335 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4336 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4337 " activated\n", dev_name(&card->gdev->dev));
4338 if (fallback)
4339 card->options.isolation = card->options.prev_isolation;
4340 break;
4341 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4342 dev_err(&card->gdev->dev, "Adapter does not "
4343 "support QDIO data connection isolation\n");
4344 break;
4345 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4346 dev_err(&card->gdev->dev,
4347 "Adapter is dedicated. "
4348 "QDIO data connection isolation not supported\n");
4349 if (fallback)
4350 card->options.isolation = card->options.prev_isolation;
4351 break;
4352 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4353 dev_err(&card->gdev->dev,
4354 "TSO does not permit QDIO data connection isolation\n");
4355 if (fallback)
4356 card->options.isolation = card->options.prev_isolation;
4357 break;
4358 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4359 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4360 "support reflective relay mode\n");
4361 if (fallback)
4362 card->options.isolation = card->options.prev_isolation;
4363 break;
4364 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4365 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4366 "enabled at the adjacent switch port");
4367 if (fallback)
4368 card->options.isolation = card->options.prev_isolation;
4369 break;
4370 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4371 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4372 "at the adjacent switch failed\n");
4373 break;
4374 default:
4375 /* this should never happen */
4376 if (fallback)
4377 card->options.isolation = card->options.prev_isolation;
4378 break;
4379 }
4380 return 0;
4381 }
4382
qeth_setadpparms_set_access_ctrl(struct qeth_card * card,enum qeth_ipa_isolation_modes isolation,int fallback)4383 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4384 enum qeth_ipa_isolation_modes isolation, int fallback)
4385 {
4386 int rc;
4387 struct qeth_cmd_buffer *iob;
4388 struct qeth_ipa_cmd *cmd;
4389 struct qeth_set_access_ctrl *access_ctrl_req;
4390
4391 QETH_CARD_TEXT(card, 4, "setacctl");
4392
4393 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4394 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4395
4396 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4397 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4398 sizeof(struct qeth_set_access_ctrl));
4399 if (!iob)
4400 return -ENOMEM;
4401 cmd = __ipa_cmd(iob);
4402 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4403 access_ctrl_req->subcmd_code = isolation;
4404
4405 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4406 &fallback);
4407 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4408 return rc;
4409 }
4410
qeth_set_access_ctrl_online(struct qeth_card * card,int fallback)4411 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4412 {
4413 int rc = 0;
4414
4415 QETH_CARD_TEXT(card, 4, "setactlo");
4416
4417 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4418 card->info.type == QETH_CARD_TYPE_OSX) &&
4419 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4420 rc = qeth_setadpparms_set_access_ctrl(card,
4421 card->options.isolation, fallback);
4422 if (rc) {
4423 QETH_DBF_MESSAGE(3,
4424 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4425 card->gdev->dev.kobj.name,
4426 rc);
4427 rc = -EOPNOTSUPP;
4428 }
4429 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4430 card->options.isolation = ISOLATION_MODE_NONE;
4431
4432 dev_err(&card->gdev->dev, "Adapter does not "
4433 "support QDIO data connection isolation\n");
4434 rc = -EOPNOTSUPP;
4435 }
4436 return rc;
4437 }
4438 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4439
qeth_tx_timeout(struct net_device * dev)4440 void qeth_tx_timeout(struct net_device *dev)
4441 {
4442 struct qeth_card *card;
4443
4444 card = dev->ml_priv;
4445 QETH_CARD_TEXT(card, 4, "txtimeo");
4446 card->stats.tx_errors++;
4447 qeth_schedule_recovery(card);
4448 }
4449 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4450
qeth_mdio_read(struct net_device * dev,int phy_id,int regnum)4451 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4452 {
4453 struct qeth_card *card = dev->ml_priv;
4454 int rc = 0;
4455
4456 switch (regnum) {
4457 case MII_BMCR: /* Basic mode control register */
4458 rc = BMCR_FULLDPLX;
4459 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4460 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4461 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4462 rc |= BMCR_SPEED100;
4463 break;
4464 case MII_BMSR: /* Basic mode status register */
4465 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4466 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4467 BMSR_100BASE4;
4468 break;
4469 case MII_PHYSID1: /* PHYS ID 1 */
4470 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4471 dev->dev_addr[2];
4472 rc = (rc >> 5) & 0xFFFF;
4473 break;
4474 case MII_PHYSID2: /* PHYS ID 2 */
4475 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4476 break;
4477 case MII_ADVERTISE: /* Advertisement control reg */
4478 rc = ADVERTISE_ALL;
4479 break;
4480 case MII_LPA: /* Link partner ability reg */
4481 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4482 LPA_100BASE4 | LPA_LPACK;
4483 break;
4484 case MII_EXPANSION: /* Expansion register */
4485 break;
4486 case MII_DCOUNTER: /* disconnect counter */
4487 break;
4488 case MII_FCSCOUNTER: /* false carrier counter */
4489 break;
4490 case MII_NWAYTEST: /* N-way auto-neg test register */
4491 break;
4492 case MII_RERRCOUNTER: /* rx error counter */
4493 rc = card->stats.rx_errors;
4494 break;
4495 case MII_SREVISION: /* silicon revision */
4496 break;
4497 case MII_RESV1: /* reserved 1 */
4498 break;
4499 case MII_LBRERROR: /* loopback, rx, bypass error */
4500 break;
4501 case MII_PHYADDR: /* physical address */
4502 break;
4503 case MII_RESV2: /* reserved 2 */
4504 break;
4505 case MII_TPISTATUS: /* TPI status for 10mbps */
4506 break;
4507 case MII_NCONFIG: /* network interface config */
4508 break;
4509 default:
4510 break;
4511 }
4512 return rc;
4513 }
4514
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)4515 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4516 struct qeth_cmd_buffer *iob, int len,
4517 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4518 unsigned long),
4519 void *reply_param)
4520 {
4521 u16 s1, s2;
4522
4523 QETH_CARD_TEXT(card, 4, "sendsnmp");
4524
4525 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4526 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4527 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4528 /* adjust PDU length fields in IPA_PDU_HEADER */
4529 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4530 s2 = (u32) len;
4531 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4532 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4533 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4534 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4535 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4536 reply_cb, reply_param);
4537 }
4538
qeth_snmp_command_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long sdata)4539 static int qeth_snmp_command_cb(struct qeth_card *card,
4540 struct qeth_reply *reply, unsigned long sdata)
4541 {
4542 struct qeth_ipa_cmd *cmd;
4543 struct qeth_arp_query_info *qinfo;
4544 unsigned char *data;
4545 void *snmp_data;
4546 __u16 data_len;
4547
4548 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4549
4550 cmd = (struct qeth_ipa_cmd *) sdata;
4551 data = (unsigned char *)((char *)cmd - reply->offset);
4552 qinfo = (struct qeth_arp_query_info *) reply->param;
4553
4554 if (cmd->hdr.return_code) {
4555 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4556 return 0;
4557 }
4558 if (cmd->data.setadapterparms.hdr.return_code) {
4559 cmd->hdr.return_code =
4560 cmd->data.setadapterparms.hdr.return_code;
4561 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4562 return 0;
4563 }
4564 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4565 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4566 snmp_data = &cmd->data.setadapterparms.data.snmp;
4567 data_len -= offsetof(struct qeth_ipa_cmd,
4568 data.setadapterparms.data.snmp);
4569 } else {
4570 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4571 data_len -= offsetof(struct qeth_ipa_cmd,
4572 data.setadapterparms.data.snmp.request);
4573 }
4574
4575 /* check if there is enough room in userspace */
4576 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4577 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4578 cmd->hdr.return_code = IPA_RC_ENOMEM;
4579 return 0;
4580 }
4581 QETH_CARD_TEXT_(card, 4, "snore%i",
4582 cmd->data.setadapterparms.hdr.used_total);
4583 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4584 cmd->data.setadapterparms.hdr.seq_no);
4585 /*copy entries to user buffer*/
4586 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4587 qinfo->udata_offset += data_len;
4588
4589 /* check if all replies received ... */
4590 QETH_CARD_TEXT_(card, 4, "srtot%i",
4591 cmd->data.setadapterparms.hdr.used_total);
4592 QETH_CARD_TEXT_(card, 4, "srseq%i",
4593 cmd->data.setadapterparms.hdr.seq_no);
4594 if (cmd->data.setadapterparms.hdr.seq_no <
4595 cmd->data.setadapterparms.hdr.used_total)
4596 return 1;
4597 return 0;
4598 }
4599
qeth_snmp_command(struct qeth_card * card,char __user * udata)4600 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4601 {
4602 struct qeth_cmd_buffer *iob;
4603 struct qeth_ipa_cmd *cmd;
4604 struct qeth_snmp_ureq *ureq;
4605 unsigned int req_len;
4606 struct qeth_arp_query_info qinfo = {0, };
4607 int rc = 0;
4608
4609 QETH_CARD_TEXT(card, 3, "snmpcmd");
4610
4611 if (card->info.guestlan)
4612 return -EOPNOTSUPP;
4613
4614 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4615 (!card->options.layer2)) {
4616 return -EOPNOTSUPP;
4617 }
4618 /* skip 4 bytes (data_len struct member) to get req_len */
4619 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4620 return -EFAULT;
4621 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4622 sizeof(struct qeth_ipacmd_hdr) -
4623 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4624 return -EINVAL;
4625 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4626 if (IS_ERR(ureq)) {
4627 QETH_CARD_TEXT(card, 2, "snmpnome");
4628 return PTR_ERR(ureq);
4629 }
4630 qinfo.udata_len = ureq->hdr.data_len;
4631 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4632 if (!qinfo.udata) {
4633 kfree(ureq);
4634 return -ENOMEM;
4635 }
4636 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4637
4638 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4639 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4640 if (!iob) {
4641 rc = -ENOMEM;
4642 goto out;
4643 }
4644 cmd = __ipa_cmd(iob);
4645 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4646 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4647 qeth_snmp_command_cb, (void *)&qinfo);
4648 if (rc)
4649 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4650 QETH_CARD_IFNAME(card), rc);
4651 else {
4652 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4653 rc = -EFAULT;
4654 }
4655 out:
4656 kfree(ureq);
4657 kfree(qinfo.udata);
4658 return rc;
4659 }
4660
qeth_setadpparms_query_oat_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4661 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4662 struct qeth_reply *reply, unsigned long data)
4663 {
4664 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4665 struct qeth_qoat_priv *priv;
4666 char *resdata;
4667 int resdatalen;
4668
4669 QETH_CARD_TEXT(card, 3, "qoatcb");
4670 if (qeth_setadpparms_inspect_rc(cmd))
4671 return 0;
4672
4673 priv = (struct qeth_qoat_priv *)reply->param;
4674 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4675 resdata = (char *)data + 28;
4676
4677 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4678 cmd->hdr.return_code = IPA_RC_FFFF;
4679 return 0;
4680 }
4681
4682 memcpy((priv->buffer + priv->response_len), resdata,
4683 resdatalen);
4684 priv->response_len += resdatalen;
4685
4686 if (cmd->data.setadapterparms.hdr.seq_no <
4687 cmd->data.setadapterparms.hdr.used_total)
4688 return 1;
4689 return 0;
4690 }
4691
qeth_query_oat_command(struct qeth_card * card,char __user * udata)4692 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4693 {
4694 int rc = 0;
4695 struct qeth_cmd_buffer *iob;
4696 struct qeth_ipa_cmd *cmd;
4697 struct qeth_query_oat *oat_req;
4698 struct qeth_query_oat_data oat_data;
4699 struct qeth_qoat_priv priv;
4700 void __user *tmp;
4701
4702 QETH_CARD_TEXT(card, 3, "qoatcmd");
4703
4704 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4705 rc = -EOPNOTSUPP;
4706 goto out;
4707 }
4708
4709 if (copy_from_user(&oat_data, udata,
4710 sizeof(struct qeth_query_oat_data))) {
4711 rc = -EFAULT;
4712 goto out;
4713 }
4714
4715 priv.buffer_len = oat_data.buffer_len;
4716 priv.response_len = 0;
4717 priv.buffer = vzalloc(oat_data.buffer_len);
4718 if (!priv.buffer) {
4719 rc = -ENOMEM;
4720 goto out;
4721 }
4722
4723 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4724 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4725 sizeof(struct qeth_query_oat));
4726 if (!iob) {
4727 rc = -ENOMEM;
4728 goto out_free;
4729 }
4730 cmd = __ipa_cmd(iob);
4731 oat_req = &cmd->data.setadapterparms.data.query_oat;
4732 oat_req->subcmd_code = oat_data.command;
4733
4734 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4735 &priv);
4736 if (!rc) {
4737 if (is_compat_task())
4738 tmp = compat_ptr(oat_data.ptr);
4739 else
4740 tmp = (void __user *)(unsigned long)oat_data.ptr;
4741
4742 if (copy_to_user(tmp, priv.buffer,
4743 priv.response_len)) {
4744 rc = -EFAULT;
4745 goto out_free;
4746 }
4747
4748 oat_data.response_len = priv.response_len;
4749
4750 if (copy_to_user(udata, &oat_data,
4751 sizeof(struct qeth_query_oat_data)))
4752 rc = -EFAULT;
4753 } else
4754 if (rc == IPA_RC_FFFF)
4755 rc = -EFAULT;
4756
4757 out_free:
4758 vfree(priv.buffer);
4759 out:
4760 return rc;
4761 }
4762
qeth_query_card_info_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4763 static int qeth_query_card_info_cb(struct qeth_card *card,
4764 struct qeth_reply *reply, unsigned long data)
4765 {
4766 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4767 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4768 struct qeth_query_card_info *card_info;
4769
4770 QETH_CARD_TEXT(card, 2, "qcrdincb");
4771 if (qeth_setadpparms_inspect_rc(cmd))
4772 return 0;
4773
4774 card_info = &cmd->data.setadapterparms.data.card_info;
4775 carrier_info->card_type = card_info->card_type;
4776 carrier_info->port_mode = card_info->port_mode;
4777 carrier_info->port_speed = card_info->port_speed;
4778 return 0;
4779 }
4780
qeth_query_card_info(struct qeth_card * card,struct carrier_info * carrier_info)4781 static int qeth_query_card_info(struct qeth_card *card,
4782 struct carrier_info *carrier_info)
4783 {
4784 struct qeth_cmd_buffer *iob;
4785
4786 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4787 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4788 return -EOPNOTSUPP;
4789 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4790 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4791 if (!iob)
4792 return -ENOMEM;
4793 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4794 (void *)carrier_info);
4795 }
4796
4797 /**
4798 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4799 * @card: pointer to a qeth_card
4800 *
4801 * Returns
4802 * 0, if a MAC address has been set for the card's netdevice
4803 * a return code, for various error conditions
4804 */
qeth_vm_request_mac(struct qeth_card * card)4805 int qeth_vm_request_mac(struct qeth_card *card)
4806 {
4807 struct diag26c_mac_resp *response;
4808 struct diag26c_mac_req *request;
4809 struct ccw_dev_id id;
4810 int rc;
4811
4812 QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4813
4814 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4815 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4816 if (!request || !response) {
4817 rc = -ENOMEM;
4818 goto out;
4819 }
4820
4821 ccw_device_get_id(CARD_DDEV(card), &id);
4822 request->resp_buf_len = sizeof(*response);
4823 request->resp_version = DIAG26C_VERSION2;
4824 request->op_code = DIAG26C_GET_MAC;
4825 request->devno = id.devno;
4826
4827 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4828 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4829 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4830 if (rc)
4831 goto out;
4832 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4833
4834 if (request->resp_buf_len < sizeof(*response) ||
4835 response->version != request->resp_version) {
4836 rc = -EIO;
4837 QETH_DBF_TEXT(SETUP, 2, "badresp");
4838 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4839 sizeof(request->resp_buf_len));
4840 } else if (!is_valid_ether_addr(response->mac)) {
4841 rc = -EINVAL;
4842 QETH_DBF_TEXT(SETUP, 2, "badmac");
4843 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4844 } else {
4845 ether_addr_copy(card->dev->dev_addr, response->mac);
4846 }
4847
4848 out:
4849 kfree(response);
4850 kfree(request);
4851 return rc;
4852 }
4853 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4854
qeth_get_qdio_q_format(struct qeth_card * card)4855 static int qeth_get_qdio_q_format(struct qeth_card *card)
4856 {
4857 if (card->info.type == QETH_CARD_TYPE_IQD)
4858 return QDIO_IQDIO_QFMT;
4859 else
4860 return QDIO_QETH_QFMT;
4861 }
4862
qeth_determine_capabilities(struct qeth_card * card)4863 static void qeth_determine_capabilities(struct qeth_card *card)
4864 {
4865 int rc;
4866 int length;
4867 char *prcd;
4868 struct ccw_device *ddev;
4869 int ddev_offline = 0;
4870
4871 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4872 ddev = CARD_DDEV(card);
4873 if (!ddev->online) {
4874 ddev_offline = 1;
4875 rc = ccw_device_set_online(ddev);
4876 if (rc) {
4877 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4878 goto out;
4879 }
4880 }
4881
4882 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4883 if (rc) {
4884 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4885 dev_name(&card->gdev->dev), rc);
4886 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4887 goto out_offline;
4888 }
4889 qeth_configure_unitaddr(card, prcd);
4890 if (ddev_offline)
4891 qeth_configure_blkt_default(card, prcd);
4892 kfree(prcd);
4893
4894 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4895 if (rc)
4896 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4897
4898 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4899 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4900 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4901 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4902 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4903 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4904 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4905 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4906 dev_info(&card->gdev->dev,
4907 "Completion Queueing supported\n");
4908 } else {
4909 card->options.cq = QETH_CQ_NOTAVAILABLE;
4910 }
4911
4912
4913 out_offline:
4914 if (ddev_offline == 1)
4915 ccw_device_set_offline(ddev);
4916 out:
4917 return;
4918 }
4919
qeth_qdio_establish_cq(struct qeth_card * card,struct qdio_buffer ** in_sbal_ptrs,void (** queue_start_poll)(struct ccw_device *,int,unsigned long))4920 static void qeth_qdio_establish_cq(struct qeth_card *card,
4921 struct qdio_buffer **in_sbal_ptrs,
4922 void (**queue_start_poll)
4923 (struct ccw_device *, int,
4924 unsigned long))
4925 {
4926 int i;
4927
4928 if (card->options.cq == QETH_CQ_ENABLED) {
4929 int offset = QDIO_MAX_BUFFERS_PER_Q *
4930 (card->qdio.no_in_queues - 1);
4931
4932 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++)
4933 in_sbal_ptrs[offset + i] =
4934 card->qdio.c_q->bufs[i].buffer;
4935
4936 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4937 }
4938 }
4939
qeth_qdio_establish(struct qeth_card * card)4940 static int qeth_qdio_establish(struct qeth_card *card)
4941 {
4942 struct qdio_initialize init_data;
4943 char *qib_param_field;
4944 struct qdio_buffer **in_sbal_ptrs;
4945 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4946 struct qdio_buffer **out_sbal_ptrs;
4947 int i, j, k;
4948 int rc = 0;
4949
4950 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4951
4952 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4953 GFP_KERNEL);
4954 if (!qib_param_field) {
4955 rc = -ENOMEM;
4956 goto out_free_nothing;
4957 }
4958
4959 qeth_create_qib_param_field(card, qib_param_field);
4960 qeth_create_qib_param_field_blkt(card, qib_param_field);
4961
4962 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4963 sizeof(void *),
4964 GFP_KERNEL);
4965 if (!in_sbal_ptrs) {
4966 rc = -ENOMEM;
4967 goto out_free_qib_param;
4968 }
4969
4970 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++)
4971 in_sbal_ptrs[i] = card->qdio.in_q->bufs[i].buffer;
4972
4973 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4974 GFP_KERNEL);
4975 if (!queue_start_poll) {
4976 rc = -ENOMEM;
4977 goto out_free_in_sbals;
4978 }
4979 for (i = 0; i < card->qdio.no_in_queues; ++i)
4980 queue_start_poll[i] = qeth_qdio_start_poll;
4981
4982 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4983
4984 out_sbal_ptrs =
4985 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4986 sizeof(void *),
4987 GFP_KERNEL);
4988 if (!out_sbal_ptrs) {
4989 rc = -ENOMEM;
4990 goto out_free_queue_start_poll;
4991 }
4992
4993 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4994 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++, k++)
4995 out_sbal_ptrs[k] =
4996 card->qdio.out_qs[i]->bufs[j]->buffer;
4997
4998 memset(&init_data, 0, sizeof(struct qdio_initialize));
4999 init_data.cdev = CARD_DDEV(card);
5000 init_data.q_format = qeth_get_qdio_q_format(card);
5001 init_data.qib_param_field_format = 0;
5002 init_data.qib_param_field = qib_param_field;
5003 init_data.no_input_qs = card->qdio.no_in_queues;
5004 init_data.no_output_qs = card->qdio.no_out_queues;
5005 init_data.input_handler = qeth_qdio_input_handler;
5006 init_data.output_handler = qeth_qdio_output_handler;
5007 init_data.queue_start_poll_array = queue_start_poll;
5008 init_data.int_parm = (unsigned long) card;
5009 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
5010 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
5011 init_data.output_sbal_state_array = card->qdio.out_bufstates;
5012 init_data.scan_threshold =
5013 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
5014
5015 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5016 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5017 rc = qdio_allocate(&init_data);
5018 if (rc) {
5019 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5020 goto out;
5021 }
5022 rc = qdio_establish(&init_data);
5023 if (rc) {
5024 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5025 qdio_free(CARD_DDEV(card));
5026 }
5027 }
5028
5029 switch (card->options.cq) {
5030 case QETH_CQ_ENABLED:
5031 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5032 break;
5033 case QETH_CQ_DISABLED:
5034 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5035 break;
5036 default:
5037 break;
5038 }
5039 out:
5040 kfree(out_sbal_ptrs);
5041 out_free_queue_start_poll:
5042 kfree(queue_start_poll);
5043 out_free_in_sbals:
5044 kfree(in_sbal_ptrs);
5045 out_free_qib_param:
5046 kfree(qib_param_field);
5047 out_free_nothing:
5048 return rc;
5049 }
5050
qeth_core_free_card(struct qeth_card * card)5051 static void qeth_core_free_card(struct qeth_card *card)
5052 {
5053 QETH_DBF_TEXT(SETUP, 2, "freecrd");
5054 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5055 qeth_clean_channel(&card->read);
5056 qeth_clean_channel(&card->write);
5057 qeth_clean_channel(&card->data);
5058 qeth_free_qdio_buffers(card);
5059 unregister_service_level(&card->qeth_service_level);
5060 kfree(card);
5061 }
5062
qeth_trace_features(struct qeth_card * card)5063 void qeth_trace_features(struct qeth_card *card)
5064 {
5065 QETH_CARD_TEXT(card, 2, "features");
5066 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5067 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5068 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5069 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5070 sizeof(card->info.diagass_support));
5071 }
5072 EXPORT_SYMBOL_GPL(qeth_trace_features);
5073
5074 static struct ccw_device_id qeth_ids[] = {
5075 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5076 .driver_info = QETH_CARD_TYPE_OSD},
5077 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5078 .driver_info = QETH_CARD_TYPE_IQD},
5079 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5080 .driver_info = QETH_CARD_TYPE_OSN},
5081 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5082 .driver_info = QETH_CARD_TYPE_OSM},
5083 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5084 .driver_info = QETH_CARD_TYPE_OSX},
5085 {},
5086 };
5087 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5088
5089 static struct ccw_driver qeth_ccw_driver = {
5090 .driver = {
5091 .owner = THIS_MODULE,
5092 .name = "qeth",
5093 },
5094 .ids = qeth_ids,
5095 .probe = ccwgroup_probe_ccwdev,
5096 .remove = ccwgroup_remove_ccwdev,
5097 };
5098
qeth_core_hardsetup_card(struct qeth_card * card)5099 int qeth_core_hardsetup_card(struct qeth_card *card)
5100 {
5101 int retries = 3;
5102 int rc;
5103
5104 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5105 atomic_set(&card->force_alloc_skb, 0);
5106 rc = qeth_update_from_chp_desc(card);
5107 if (rc)
5108 return rc;
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_IPV6)) {
5193 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5194 if (rc == -ENOMEM)
5195 goto out;
5196 }
5197 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5198 rc = qeth_query_setadapterparms(card);
5199 if (rc < 0) {
5200 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5201 goto out;
5202 }
5203 }
5204 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5205 rc = qeth_query_setdiagass(card);
5206 if (rc < 0) {
5207 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5208 goto out;
5209 }
5210 }
5211 return 0;
5212 out:
5213 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5214 "an error on the device\n");
5215 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5216 dev_name(&card->gdev->dev), rc);
5217 return rc;
5218 }
5219 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5220
qeth_create_skb_frag(struct qdio_buffer_element * element,struct sk_buff * skb,int offset,int data_len)5221 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5222 struct sk_buff *skb, int offset, int data_len)
5223 {
5224 struct page *page = virt_to_page(element->addr);
5225 unsigned int next_frag;
5226
5227 /* first fill the linear space */
5228 if (!skb->len) {
5229 unsigned int linear = min(data_len, skb_tailroom(skb));
5230
5231 skb_put_data(skb, element->addr + offset, linear);
5232 data_len -= linear;
5233 if (!data_len)
5234 return;
5235 offset += linear;
5236 /* fall through to add page frag for remaining data */
5237 }
5238
5239 next_frag = skb_shinfo(skb)->nr_frags;
5240 get_page(page);
5241 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5242 }
5243
qeth_is_last_sbale(struct qdio_buffer_element * sbale)5244 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5245 {
5246 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5247 }
5248
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)5249 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5250 struct qeth_qdio_buffer *qethbuffer,
5251 struct qdio_buffer_element **__element, int *__offset,
5252 struct qeth_hdr **hdr)
5253 {
5254 struct qdio_buffer_element *element = *__element;
5255 struct qdio_buffer *buffer = qethbuffer->buffer;
5256 int offset = *__offset;
5257 struct sk_buff *skb;
5258 int skb_len = 0;
5259 void *data_ptr;
5260 int data_len;
5261 int headroom = 0;
5262 int use_rx_sg = 0;
5263
5264 /* qeth_hdr must not cross element boundaries */
5265 while (element->length < offset + sizeof(struct qeth_hdr)) {
5266 if (qeth_is_last_sbale(element))
5267 return NULL;
5268 element++;
5269 offset = 0;
5270 }
5271 *hdr = element->addr + offset;
5272
5273 offset += sizeof(struct qeth_hdr);
5274 switch ((*hdr)->hdr.l2.id) {
5275 case QETH_HEADER_TYPE_LAYER2:
5276 skb_len = (*hdr)->hdr.l2.pkt_length;
5277 break;
5278 case QETH_HEADER_TYPE_LAYER3:
5279 skb_len = (*hdr)->hdr.l3.length;
5280 headroom = ETH_HLEN;
5281 break;
5282 case QETH_HEADER_TYPE_OSN:
5283 skb_len = (*hdr)->hdr.osn.pdu_length;
5284 headroom = sizeof(struct qeth_hdr);
5285 break;
5286 default:
5287 break;
5288 }
5289
5290 if (!skb_len)
5291 return NULL;
5292
5293 if (((skb_len >= card->options.rx_sg_cb) &&
5294 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5295 (!atomic_read(&card->force_alloc_skb))) ||
5296 (card->options.cq == QETH_CQ_ENABLED))
5297 use_rx_sg = 1;
5298
5299 if (use_rx_sg && qethbuffer->rx_skb) {
5300 /* QETH_CQ_ENABLED only: */
5301 skb = qethbuffer->rx_skb;
5302 qethbuffer->rx_skb = NULL;
5303 } else {
5304 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5305
5306 skb = napi_alloc_skb(&card->napi, linear + headroom);
5307 }
5308 if (!skb)
5309 goto no_mem;
5310 if (headroom)
5311 skb_reserve(skb, headroom);
5312
5313 data_ptr = element->addr + offset;
5314 while (skb_len) {
5315 data_len = min(skb_len, (int)(element->length - offset));
5316 if (data_len) {
5317 if (use_rx_sg)
5318 qeth_create_skb_frag(element, skb, offset,
5319 data_len);
5320 else
5321 skb_put_data(skb, data_ptr, data_len);
5322 }
5323 skb_len -= data_len;
5324 if (skb_len) {
5325 if (qeth_is_last_sbale(element)) {
5326 QETH_CARD_TEXT(card, 4, "unexeob");
5327 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5328 dev_kfree_skb_any(skb);
5329 card->stats.rx_errors++;
5330 return NULL;
5331 }
5332 element++;
5333 offset = 0;
5334 data_ptr = element->addr;
5335 } else {
5336 offset += data_len;
5337 }
5338 }
5339 *__element = element;
5340 *__offset = offset;
5341 if (use_rx_sg && card->options.performance_stats) {
5342 card->perf_stats.sg_skbs_rx++;
5343 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5344 }
5345 return skb;
5346 no_mem:
5347 if (net_ratelimit()) {
5348 QETH_CARD_TEXT(card, 2, "noskbmem");
5349 }
5350 card->stats.rx_dropped++;
5351 return NULL;
5352 }
5353 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5354
qeth_poll(struct napi_struct * napi,int budget)5355 int qeth_poll(struct napi_struct *napi, int budget)
5356 {
5357 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5358 int work_done = 0;
5359 struct qeth_qdio_buffer *buffer;
5360 int done;
5361 int new_budget = budget;
5362
5363 if (card->options.performance_stats) {
5364 card->perf_stats.inbound_cnt++;
5365 card->perf_stats.inbound_start_time = qeth_get_micros();
5366 }
5367
5368 while (1) {
5369 if (!card->rx.b_count) {
5370 card->rx.qdio_err = 0;
5371 card->rx.b_count = qdio_get_next_buffers(
5372 card->data.ccwdev, 0, &card->rx.b_index,
5373 &card->rx.qdio_err);
5374 if (card->rx.b_count <= 0) {
5375 card->rx.b_count = 0;
5376 break;
5377 }
5378 card->rx.b_element =
5379 &card->qdio.in_q->bufs[card->rx.b_index]
5380 .buffer->element[0];
5381 card->rx.e_offset = 0;
5382 }
5383
5384 while (card->rx.b_count) {
5385 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5386 if (!(card->rx.qdio_err &&
5387 qeth_check_qdio_errors(card, buffer->buffer,
5388 card->rx.qdio_err, "qinerr")))
5389 work_done +=
5390 card->discipline->process_rx_buffer(
5391 card, new_budget, &done);
5392 else
5393 done = 1;
5394
5395 if (done) {
5396 if (card->options.performance_stats)
5397 card->perf_stats.bufs_rec++;
5398 qeth_put_buffer_pool_entry(card,
5399 buffer->pool_entry);
5400 qeth_queue_input_buffer(card, card->rx.b_index);
5401 card->rx.b_count--;
5402 if (card->rx.b_count) {
5403 card->rx.b_index =
5404 (card->rx.b_index + 1) %
5405 QDIO_MAX_BUFFERS_PER_Q;
5406 card->rx.b_element =
5407 &card->qdio.in_q
5408 ->bufs[card->rx.b_index]
5409 .buffer->element[0];
5410 card->rx.e_offset = 0;
5411 }
5412 }
5413
5414 if (work_done >= budget)
5415 goto out;
5416 else
5417 new_budget = budget - work_done;
5418 }
5419 }
5420
5421 napi_complete_done(napi, work_done);
5422 if (qdio_start_irq(card->data.ccwdev, 0))
5423 napi_schedule(&card->napi);
5424 out:
5425 if (card->options.performance_stats)
5426 card->perf_stats.inbound_time += qeth_get_micros() -
5427 card->perf_stats.inbound_start_time;
5428 return work_done;
5429 }
5430 EXPORT_SYMBOL_GPL(qeth_poll);
5431
qeth_setassparms_inspect_rc(struct qeth_ipa_cmd * cmd)5432 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5433 {
5434 if (!cmd->hdr.return_code)
5435 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5436 return cmd->hdr.return_code;
5437 }
5438
qeth_setassparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)5439 int qeth_setassparms_cb(struct qeth_card *card,
5440 struct qeth_reply *reply, unsigned long data)
5441 {
5442 struct qeth_ipa_cmd *cmd;
5443
5444 QETH_CARD_TEXT(card, 4, "defadpcb");
5445
5446 cmd = (struct qeth_ipa_cmd *) data;
5447 if (cmd->hdr.return_code == 0) {
5448 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5449 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5450 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5451 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5452 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5453 }
5454 return 0;
5455 }
5456 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5457
qeth_get_setassparms_cmd(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,__u16 cmd_code,__u16 len,enum qeth_prot_versions prot)5458 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5459 enum qeth_ipa_funcs ipa_func,
5460 __u16 cmd_code, __u16 len,
5461 enum qeth_prot_versions prot)
5462 {
5463 struct qeth_cmd_buffer *iob;
5464 struct qeth_ipa_cmd *cmd;
5465
5466 QETH_CARD_TEXT(card, 4, "getasscm");
5467 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5468
5469 if (iob) {
5470 cmd = __ipa_cmd(iob);
5471 cmd->data.setassparms.hdr.assist_no = ipa_func;
5472 cmd->data.setassparms.hdr.length = 8 + len;
5473 cmd->data.setassparms.hdr.command_code = cmd_code;
5474 cmd->data.setassparms.hdr.return_code = 0;
5475 cmd->data.setassparms.hdr.seq_no = 0;
5476 }
5477
5478 return iob;
5479 }
5480 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5481
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)5482 int qeth_send_setassparms(struct qeth_card *card,
5483 struct qeth_cmd_buffer *iob, __u16 len, long data,
5484 int (*reply_cb)(struct qeth_card *,
5485 struct qeth_reply *, unsigned long),
5486 void *reply_param)
5487 {
5488 int rc;
5489 struct qeth_ipa_cmd *cmd;
5490
5491 QETH_CARD_TEXT(card, 4, "sendassp");
5492
5493 cmd = __ipa_cmd(iob);
5494 if (len <= sizeof(__u32))
5495 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5496 else /* (len > sizeof(__u32)) */
5497 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5498
5499 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5500 return rc;
5501 }
5502 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5503
qeth_send_simple_setassparms_prot(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,long data,enum qeth_prot_versions prot)5504 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5505 enum qeth_ipa_funcs ipa_func,
5506 u16 cmd_code, long data,
5507 enum qeth_prot_versions prot)
5508 {
5509 int rc;
5510 int length = 0;
5511 struct qeth_cmd_buffer *iob;
5512
5513 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5514 if (data)
5515 length = sizeof(__u32);
5516 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5517 if (!iob)
5518 return -ENOMEM;
5519 rc = qeth_send_setassparms(card, iob, length, data,
5520 qeth_setassparms_cb, NULL);
5521 return rc;
5522 }
5523 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5524
qeth_unregister_dbf_views(void)5525 static void qeth_unregister_dbf_views(void)
5526 {
5527 int x;
5528 for (x = 0; x < QETH_DBF_INFOS; x++) {
5529 debug_unregister(qeth_dbf[x].id);
5530 qeth_dbf[x].id = NULL;
5531 }
5532 }
5533
qeth_dbf_longtext(debug_info_t * id,int level,char * fmt,...)5534 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5535 {
5536 char dbf_txt_buf[32];
5537 va_list args;
5538
5539 if (!debug_level_enabled(id, level))
5540 return;
5541 va_start(args, fmt);
5542 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5543 va_end(args);
5544 debug_text_event(id, level, dbf_txt_buf);
5545 }
5546 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5547
qeth_register_dbf_views(void)5548 static int qeth_register_dbf_views(void)
5549 {
5550 int ret;
5551 int x;
5552
5553 for (x = 0; x < QETH_DBF_INFOS; x++) {
5554 /* register the areas */
5555 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5556 qeth_dbf[x].pages,
5557 qeth_dbf[x].areas,
5558 qeth_dbf[x].len);
5559 if (qeth_dbf[x].id == NULL) {
5560 qeth_unregister_dbf_views();
5561 return -ENOMEM;
5562 }
5563
5564 /* register a view */
5565 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5566 if (ret) {
5567 qeth_unregister_dbf_views();
5568 return ret;
5569 }
5570
5571 /* set a passing level */
5572 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5573 }
5574
5575 return 0;
5576 }
5577
qeth_core_load_discipline(struct qeth_card * card,enum qeth_discipline_id discipline)5578 int qeth_core_load_discipline(struct qeth_card *card,
5579 enum qeth_discipline_id discipline)
5580 {
5581 int rc = 0;
5582
5583 mutex_lock(&qeth_mod_mutex);
5584 switch (discipline) {
5585 case QETH_DISCIPLINE_LAYER3:
5586 card->discipline = try_then_request_module(
5587 symbol_get(qeth_l3_discipline), "qeth_l3");
5588 break;
5589 case QETH_DISCIPLINE_LAYER2:
5590 card->discipline = try_then_request_module(
5591 symbol_get(qeth_l2_discipline), "qeth_l2");
5592 break;
5593 default:
5594 break;
5595 }
5596
5597 if (!card->discipline) {
5598 dev_err(&card->gdev->dev, "There is no kernel module to "
5599 "support discipline %d\n", discipline);
5600 rc = -EINVAL;
5601 }
5602 mutex_unlock(&qeth_mod_mutex);
5603 return rc;
5604 }
5605
qeth_core_free_discipline(struct qeth_card * card)5606 void qeth_core_free_discipline(struct qeth_card *card)
5607 {
5608 if (card->options.layer2)
5609 symbol_put(qeth_l2_discipline);
5610 else
5611 symbol_put(qeth_l3_discipline);
5612 card->discipline = NULL;
5613 }
5614
5615 const struct device_type qeth_generic_devtype = {
5616 .name = "qeth_generic",
5617 .groups = qeth_generic_attr_groups,
5618 };
5619 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5620
5621 static const struct device_type qeth_osn_devtype = {
5622 .name = "qeth_osn",
5623 .groups = qeth_osn_attr_groups,
5624 };
5625
5626 #define DBF_NAME_LEN 20
5627
5628 struct qeth_dbf_entry {
5629 char dbf_name[DBF_NAME_LEN];
5630 debug_info_t *dbf_info;
5631 struct list_head dbf_list;
5632 };
5633
5634 static LIST_HEAD(qeth_dbf_list);
5635 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5636
qeth_get_dbf_entry(char * name)5637 static debug_info_t *qeth_get_dbf_entry(char *name)
5638 {
5639 struct qeth_dbf_entry *entry;
5640 debug_info_t *rc = NULL;
5641
5642 mutex_lock(&qeth_dbf_list_mutex);
5643 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5644 if (strcmp(entry->dbf_name, name) == 0) {
5645 rc = entry->dbf_info;
5646 break;
5647 }
5648 }
5649 mutex_unlock(&qeth_dbf_list_mutex);
5650 return rc;
5651 }
5652
qeth_add_dbf_entry(struct qeth_card * card,char * name)5653 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5654 {
5655 struct qeth_dbf_entry *new_entry;
5656
5657 card->debug = debug_register(name, 2, 1, 8);
5658 if (!card->debug) {
5659 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5660 goto err;
5661 }
5662 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5663 goto err_dbg;
5664 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5665 if (!new_entry)
5666 goto err_dbg;
5667 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5668 new_entry->dbf_info = card->debug;
5669 mutex_lock(&qeth_dbf_list_mutex);
5670 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5671 mutex_unlock(&qeth_dbf_list_mutex);
5672
5673 return 0;
5674
5675 err_dbg:
5676 debug_unregister(card->debug);
5677 err:
5678 return -ENOMEM;
5679 }
5680
qeth_clear_dbf_list(void)5681 static void qeth_clear_dbf_list(void)
5682 {
5683 struct qeth_dbf_entry *entry, *tmp;
5684
5685 mutex_lock(&qeth_dbf_list_mutex);
5686 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5687 list_del(&entry->dbf_list);
5688 debug_unregister(entry->dbf_info);
5689 kfree(entry);
5690 }
5691 mutex_unlock(&qeth_dbf_list_mutex);
5692 }
5693
qeth_alloc_netdev(struct qeth_card * card)5694 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5695 {
5696 struct net_device *dev;
5697
5698 switch (card->info.type) {
5699 case QETH_CARD_TYPE_IQD:
5700 dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup);
5701 break;
5702 case QETH_CARD_TYPE_OSN:
5703 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5704 break;
5705 default:
5706 dev = alloc_etherdev(0);
5707 }
5708
5709 if (!dev)
5710 return NULL;
5711
5712 dev->ml_priv = card;
5713 dev->watchdog_timeo = QETH_TX_TIMEOUT;
5714 dev->min_mtu = IS_OSN(card) ? 64 : 576;
5715 /* initialized when device first goes online: */
5716 dev->max_mtu = 0;
5717 dev->mtu = 0;
5718 SET_NETDEV_DEV(dev, &card->gdev->dev);
5719 netif_carrier_off(dev);
5720
5721 if (!IS_OSN(card)) {
5722 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5723 dev->hw_features |= NETIF_F_SG;
5724 dev->vlan_features |= NETIF_F_SG;
5725 if (IS_IQD(card))
5726 dev->features |= NETIF_F_SG;
5727 }
5728
5729 return dev;
5730 }
5731
qeth_clone_netdev(struct net_device * orig)5732 struct net_device *qeth_clone_netdev(struct net_device *orig)
5733 {
5734 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5735
5736 if (!clone)
5737 return NULL;
5738
5739 clone->dev_port = orig->dev_port;
5740 return clone;
5741 }
5742
qeth_core_probe_device(struct ccwgroup_device * gdev)5743 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5744 {
5745 struct qeth_card *card;
5746 struct device *dev;
5747 int rc;
5748 enum qeth_discipline_id enforced_disc;
5749 unsigned long flags;
5750 char dbf_name[DBF_NAME_LEN];
5751
5752 QETH_DBF_TEXT(SETUP, 2, "probedev");
5753
5754 dev = &gdev->dev;
5755 if (!get_device(dev))
5756 return -ENODEV;
5757
5758 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5759
5760 card = qeth_alloc_card(gdev);
5761 if (!card) {
5762 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5763 rc = -ENOMEM;
5764 goto err_dev;
5765 }
5766
5767 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5768 dev_name(&gdev->dev));
5769 card->debug = qeth_get_dbf_entry(dbf_name);
5770 if (!card->debug) {
5771 rc = qeth_add_dbf_entry(card, dbf_name);
5772 if (rc)
5773 goto err_card;
5774 }
5775
5776 dev_set_drvdata(&gdev->dev, card);
5777 qeth_setup_card(card);
5778 rc = qeth_update_from_chp_desc(card);
5779 if (rc)
5780 goto err_chp_desc;
5781
5782 card->dev = qeth_alloc_netdev(card);
5783 if (!card->dev) {
5784 rc = -ENOMEM;
5785 goto err_card;
5786 }
5787
5788 qeth_determine_capabilities(card);
5789 enforced_disc = qeth_enforce_discipline(card);
5790 switch (enforced_disc) {
5791 case QETH_DISCIPLINE_UNDETERMINED:
5792 gdev->dev.type = &qeth_generic_devtype;
5793 break;
5794 default:
5795 card->info.layer_enforced = true;
5796 rc = qeth_core_load_discipline(card, enforced_disc);
5797 if (rc)
5798 goto err_load;
5799
5800 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5801 ? card->discipline->devtype
5802 : &qeth_osn_devtype;
5803 rc = card->discipline->setup(card->gdev);
5804 if (rc)
5805 goto err_disc;
5806 break;
5807 }
5808
5809 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5810 list_add_tail(&card->list, &qeth_core_card_list.list);
5811 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5812 return 0;
5813
5814 err_disc:
5815 qeth_core_free_discipline(card);
5816 err_load:
5817 free_netdev(card->dev);
5818 err_chp_desc:
5819 err_card:
5820 qeth_core_free_card(card);
5821 err_dev:
5822 put_device(dev);
5823 return rc;
5824 }
5825
qeth_core_remove_device(struct ccwgroup_device * gdev)5826 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5827 {
5828 unsigned long flags;
5829 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5830
5831 QETH_DBF_TEXT(SETUP, 2, "removedv");
5832
5833 if (card->discipline) {
5834 card->discipline->remove(gdev);
5835 qeth_core_free_discipline(card);
5836 }
5837
5838 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5839 list_del(&card->list);
5840 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5841 free_netdev(card->dev);
5842 qeth_core_free_card(card);
5843 dev_set_drvdata(&gdev->dev, NULL);
5844 put_device(&gdev->dev);
5845 }
5846
qeth_core_set_online(struct ccwgroup_device * gdev)5847 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5848 {
5849 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5850 int rc = 0;
5851 enum qeth_discipline_id def_discipline;
5852
5853 if (!card->discipline) {
5854 if (card->info.type == QETH_CARD_TYPE_IQD)
5855 def_discipline = QETH_DISCIPLINE_LAYER3;
5856 else
5857 def_discipline = QETH_DISCIPLINE_LAYER2;
5858 rc = qeth_core_load_discipline(card, def_discipline);
5859 if (rc)
5860 goto err;
5861 rc = card->discipline->setup(card->gdev);
5862 if (rc) {
5863 qeth_core_free_discipline(card);
5864 goto err;
5865 }
5866 }
5867 rc = card->discipline->set_online(gdev);
5868 err:
5869 return rc;
5870 }
5871
qeth_core_set_offline(struct ccwgroup_device * gdev)5872 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5873 {
5874 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5875 return card->discipline->set_offline(gdev);
5876 }
5877
qeth_core_shutdown(struct ccwgroup_device * gdev)5878 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5879 {
5880 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5881 qeth_set_allowed_threads(card, 0, 1);
5882 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5883 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5884 qeth_qdio_clear_card(card, 0);
5885 qeth_clear_qdio_buffers(card);
5886 qdio_free(CARD_DDEV(card));
5887 }
5888
qeth_core_freeze(struct ccwgroup_device * gdev)5889 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5890 {
5891 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5892 if (card->discipline && card->discipline->freeze)
5893 return card->discipline->freeze(gdev);
5894 return 0;
5895 }
5896
qeth_core_thaw(struct ccwgroup_device * gdev)5897 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5898 {
5899 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5900 if (card->discipline && card->discipline->thaw)
5901 return card->discipline->thaw(gdev);
5902 return 0;
5903 }
5904
qeth_core_restore(struct ccwgroup_device * gdev)5905 static int qeth_core_restore(struct ccwgroup_device *gdev)
5906 {
5907 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5908 if (card->discipline && card->discipline->restore)
5909 return card->discipline->restore(gdev);
5910 return 0;
5911 }
5912
group_store(struct device_driver * ddrv,const char * buf,size_t count)5913 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5914 size_t count)
5915 {
5916 int err;
5917
5918 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5919 buf);
5920
5921 return err ? err : count;
5922 }
5923 static DRIVER_ATTR_WO(group);
5924
5925 static struct attribute *qeth_drv_attrs[] = {
5926 &driver_attr_group.attr,
5927 NULL,
5928 };
5929 static struct attribute_group qeth_drv_attr_group = {
5930 .attrs = qeth_drv_attrs,
5931 };
5932 static const struct attribute_group *qeth_drv_attr_groups[] = {
5933 &qeth_drv_attr_group,
5934 NULL,
5935 };
5936
5937 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5938 .driver = {
5939 .groups = qeth_drv_attr_groups,
5940 .owner = THIS_MODULE,
5941 .name = "qeth",
5942 },
5943 .ccw_driver = &qeth_ccw_driver,
5944 .setup = qeth_core_probe_device,
5945 .remove = qeth_core_remove_device,
5946 .set_online = qeth_core_set_online,
5947 .set_offline = qeth_core_set_offline,
5948 .shutdown = qeth_core_shutdown,
5949 .prepare = NULL,
5950 .complete = NULL,
5951 .freeze = qeth_core_freeze,
5952 .thaw = qeth_core_thaw,
5953 .restore = qeth_core_restore,
5954 };
5955
qeth_do_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)5956 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5957 {
5958 struct qeth_card *card = dev->ml_priv;
5959 struct mii_ioctl_data *mii_data;
5960 int rc = 0;
5961
5962 if (!card)
5963 return -ENODEV;
5964
5965 if (!qeth_card_hw_is_reachable(card))
5966 return -ENODEV;
5967
5968 if (card->info.type == QETH_CARD_TYPE_OSN)
5969 return -EPERM;
5970
5971 switch (cmd) {
5972 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5973 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5974 break;
5975 case SIOC_QETH_GET_CARD_TYPE:
5976 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5977 card->info.type == QETH_CARD_TYPE_OSM ||
5978 card->info.type == QETH_CARD_TYPE_OSX) &&
5979 !card->info.guestlan)
5980 return 1;
5981 else
5982 return 0;
5983 case SIOCGMIIPHY:
5984 mii_data = if_mii(rq);
5985 mii_data->phy_id = 0;
5986 break;
5987 case SIOCGMIIREG:
5988 mii_data = if_mii(rq);
5989 if (mii_data->phy_id != 0)
5990 rc = -EINVAL;
5991 else
5992 mii_data->val_out = qeth_mdio_read(dev,
5993 mii_data->phy_id, mii_data->reg_num);
5994 break;
5995 case SIOC_QETH_QUERY_OAT:
5996 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5997 break;
5998 default:
5999 if (card->discipline->do_ioctl)
6000 rc = card->discipline->do_ioctl(dev, rq, cmd);
6001 else
6002 rc = -EOPNOTSUPP;
6003 }
6004 if (rc)
6005 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6006 return rc;
6007 }
6008 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6009
6010 static struct {
6011 const char str[ETH_GSTRING_LEN];
6012 } qeth_ethtool_stats_keys[] = {
6013 /* 0 */{"rx skbs"},
6014 {"rx buffers"},
6015 {"tx skbs"},
6016 {"tx buffers"},
6017 {"tx skbs no packing"},
6018 {"tx buffers no packing"},
6019 {"tx skbs packing"},
6020 {"tx buffers packing"},
6021 {"tx sg skbs"},
6022 {"tx buffer elements"},
6023 /* 10 */{"rx sg skbs"},
6024 {"rx sg frags"},
6025 {"rx sg page allocs"},
6026 {"tx large kbytes"},
6027 {"tx large count"},
6028 {"tx pk state ch n->p"},
6029 {"tx pk state ch p->n"},
6030 {"tx pk watermark low"},
6031 {"tx pk watermark high"},
6032 {"queue 0 buffer usage"},
6033 /* 20 */{"queue 1 buffer usage"},
6034 {"queue 2 buffer usage"},
6035 {"queue 3 buffer usage"},
6036 {"rx poll time"},
6037 {"rx poll count"},
6038 {"rx do_QDIO time"},
6039 {"rx do_QDIO count"},
6040 {"tx handler time"},
6041 {"tx handler count"},
6042 {"tx time"},
6043 /* 30 */{"tx count"},
6044 {"tx do_QDIO time"},
6045 {"tx do_QDIO count"},
6046 {"tx csum"},
6047 {"tx lin"},
6048 {"tx linfail"},
6049 {"cq handler count"},
6050 {"cq handler time"},
6051 {"rx csum"}
6052 };
6053
qeth_core_get_sset_count(struct net_device * dev,int stringset)6054 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6055 {
6056 switch (stringset) {
6057 case ETH_SS_STATS:
6058 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6059 default:
6060 return -EINVAL;
6061 }
6062 }
6063 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6064
qeth_core_get_ethtool_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)6065 void qeth_core_get_ethtool_stats(struct net_device *dev,
6066 struct ethtool_stats *stats, u64 *data)
6067 {
6068 struct qeth_card *card = dev->ml_priv;
6069 data[0] = card->stats.rx_packets -
6070 card->perf_stats.initial_rx_packets;
6071 data[1] = card->perf_stats.bufs_rec;
6072 data[2] = card->stats.tx_packets -
6073 card->perf_stats.initial_tx_packets;
6074 data[3] = card->perf_stats.bufs_sent;
6075 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6076 - card->perf_stats.skbs_sent_pack;
6077 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6078 data[6] = card->perf_stats.skbs_sent_pack;
6079 data[7] = card->perf_stats.bufs_sent_pack;
6080 data[8] = card->perf_stats.sg_skbs_sent;
6081 data[9] = card->perf_stats.buf_elements_sent;
6082 data[10] = card->perf_stats.sg_skbs_rx;
6083 data[11] = card->perf_stats.sg_frags_rx;
6084 data[12] = card->perf_stats.sg_alloc_page_rx;
6085 data[13] = (card->perf_stats.large_send_bytes >> 10);
6086 data[14] = card->perf_stats.large_send_cnt;
6087 data[15] = card->perf_stats.sc_dp_p;
6088 data[16] = card->perf_stats.sc_p_dp;
6089 data[17] = QETH_LOW_WATERMARK_PACK;
6090 data[18] = QETH_HIGH_WATERMARK_PACK;
6091 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6092 data[20] = (card->qdio.no_out_queues > 1) ?
6093 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6094 data[21] = (card->qdio.no_out_queues > 2) ?
6095 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6096 data[22] = (card->qdio.no_out_queues > 3) ?
6097 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6098 data[23] = card->perf_stats.inbound_time;
6099 data[24] = card->perf_stats.inbound_cnt;
6100 data[25] = card->perf_stats.inbound_do_qdio_time;
6101 data[26] = card->perf_stats.inbound_do_qdio_cnt;
6102 data[27] = card->perf_stats.outbound_handler_time;
6103 data[28] = card->perf_stats.outbound_handler_cnt;
6104 data[29] = card->perf_stats.outbound_time;
6105 data[30] = card->perf_stats.outbound_cnt;
6106 data[31] = card->perf_stats.outbound_do_qdio_time;
6107 data[32] = card->perf_stats.outbound_do_qdio_cnt;
6108 data[33] = card->perf_stats.tx_csum;
6109 data[34] = card->perf_stats.tx_lin;
6110 data[35] = card->perf_stats.tx_linfail;
6111 data[36] = card->perf_stats.cq_cnt;
6112 data[37] = card->perf_stats.cq_time;
6113 data[38] = card->perf_stats.rx_csum;
6114 }
6115 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6116
qeth_core_get_strings(struct net_device * dev,u32 stringset,u8 * data)6117 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6118 {
6119 switch (stringset) {
6120 case ETH_SS_STATS:
6121 memcpy(data, &qeth_ethtool_stats_keys,
6122 sizeof(qeth_ethtool_stats_keys));
6123 break;
6124 default:
6125 WARN_ON(1);
6126 break;
6127 }
6128 }
6129 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6130
qeth_core_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)6131 void qeth_core_get_drvinfo(struct net_device *dev,
6132 struct ethtool_drvinfo *info)
6133 {
6134 struct qeth_card *card = dev->ml_priv;
6135
6136 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6137 sizeof(info->driver));
6138 strlcpy(info->version, "1.0", sizeof(info->version));
6139 strlcpy(info->fw_version, card->info.mcl_level,
6140 sizeof(info->fw_version));
6141 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6142 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6143 }
6144 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6145
6146 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6147 /* Autoneg and full-duplex are supported and advertised unconditionally. */
6148 /* Always advertise and support all speeds up to specified, and only one */
6149 /* specified port type. */
qeth_set_cmd_adv_sup(struct ethtool_link_ksettings * cmd,int maxspeed,int porttype)6150 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6151 int maxspeed, int porttype)
6152 {
6153 ethtool_link_ksettings_zero_link_mode(cmd, supported);
6154 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6155 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6156
6157 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6158 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6159
6160 switch (porttype) {
6161 case PORT_TP:
6162 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6163 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6164 break;
6165 case PORT_FIBRE:
6166 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6167 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6168 break;
6169 default:
6170 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6171 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6172 WARN_ON_ONCE(1);
6173 }
6174
6175 /* fallthrough from high to low, to select all legal speeds: */
6176 switch (maxspeed) {
6177 case SPEED_10000:
6178 ethtool_link_ksettings_add_link_mode(cmd, supported,
6179 10000baseT_Full);
6180 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6181 10000baseT_Full);
6182 case SPEED_1000:
6183 ethtool_link_ksettings_add_link_mode(cmd, supported,
6184 1000baseT_Full);
6185 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6186 1000baseT_Full);
6187 ethtool_link_ksettings_add_link_mode(cmd, supported,
6188 1000baseT_Half);
6189 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6190 1000baseT_Half);
6191 case SPEED_100:
6192 ethtool_link_ksettings_add_link_mode(cmd, supported,
6193 100baseT_Full);
6194 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6195 100baseT_Full);
6196 ethtool_link_ksettings_add_link_mode(cmd, supported,
6197 100baseT_Half);
6198 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6199 100baseT_Half);
6200 case SPEED_10:
6201 ethtool_link_ksettings_add_link_mode(cmd, supported,
6202 10baseT_Full);
6203 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6204 10baseT_Full);
6205 ethtool_link_ksettings_add_link_mode(cmd, supported,
6206 10baseT_Half);
6207 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6208 10baseT_Half);
6209 /* end fallthrough */
6210 break;
6211 default:
6212 ethtool_link_ksettings_add_link_mode(cmd, supported,
6213 10baseT_Full);
6214 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6215 10baseT_Full);
6216 ethtool_link_ksettings_add_link_mode(cmd, supported,
6217 10baseT_Half);
6218 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6219 10baseT_Half);
6220 WARN_ON_ONCE(1);
6221 }
6222 }
6223
qeth_core_ethtool_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)6224 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6225 struct ethtool_link_ksettings *cmd)
6226 {
6227 struct qeth_card *card = netdev->ml_priv;
6228 enum qeth_link_types link_type;
6229 struct carrier_info carrier_info;
6230 int rc;
6231
6232 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6233 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6234 else
6235 link_type = card->info.link_type;
6236
6237 cmd->base.duplex = DUPLEX_FULL;
6238 cmd->base.autoneg = AUTONEG_ENABLE;
6239 cmd->base.phy_address = 0;
6240 cmd->base.mdio_support = 0;
6241 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6242 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6243
6244 switch (link_type) {
6245 case QETH_LINK_TYPE_FAST_ETH:
6246 case QETH_LINK_TYPE_LANE_ETH100:
6247 cmd->base.speed = SPEED_100;
6248 cmd->base.port = PORT_TP;
6249 break;
6250 case QETH_LINK_TYPE_GBIT_ETH:
6251 case QETH_LINK_TYPE_LANE_ETH1000:
6252 cmd->base.speed = SPEED_1000;
6253 cmd->base.port = PORT_FIBRE;
6254 break;
6255 case QETH_LINK_TYPE_10GBIT_ETH:
6256 cmd->base.speed = SPEED_10000;
6257 cmd->base.port = PORT_FIBRE;
6258 break;
6259 default:
6260 cmd->base.speed = SPEED_10;
6261 cmd->base.port = PORT_TP;
6262 }
6263 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6264
6265 /* Check if we can obtain more accurate information. */
6266 /* If QUERY_CARD_INFO command is not supported or fails, */
6267 /* just return the heuristics that was filled above. */
6268 if (!qeth_card_hw_is_reachable(card))
6269 return -ENODEV;
6270 rc = qeth_query_card_info(card, &carrier_info);
6271 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6272 return 0;
6273 if (rc) /* report error from the hardware operation */
6274 return rc;
6275 /* on success, fill in the information got from the hardware */
6276
6277 netdev_dbg(netdev,
6278 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6279 carrier_info.card_type,
6280 carrier_info.port_mode,
6281 carrier_info.port_speed);
6282
6283 /* Update attributes for which we've obtained more authoritative */
6284 /* information, leave the rest the way they where filled above. */
6285 switch (carrier_info.card_type) {
6286 case CARD_INFO_TYPE_1G_COPPER_A:
6287 case CARD_INFO_TYPE_1G_COPPER_B:
6288 cmd->base.port = PORT_TP;
6289 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6290 break;
6291 case CARD_INFO_TYPE_1G_FIBRE_A:
6292 case CARD_INFO_TYPE_1G_FIBRE_B:
6293 cmd->base.port = PORT_FIBRE;
6294 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6295 break;
6296 case CARD_INFO_TYPE_10G_FIBRE_A:
6297 case CARD_INFO_TYPE_10G_FIBRE_B:
6298 cmd->base.port = PORT_FIBRE;
6299 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6300 break;
6301 }
6302
6303 switch (carrier_info.port_mode) {
6304 case CARD_INFO_PORTM_FULLDUPLEX:
6305 cmd->base.duplex = DUPLEX_FULL;
6306 break;
6307 case CARD_INFO_PORTM_HALFDUPLEX:
6308 cmd->base.duplex = DUPLEX_HALF;
6309 break;
6310 }
6311
6312 switch (carrier_info.port_speed) {
6313 case CARD_INFO_PORTS_10M:
6314 cmd->base.speed = SPEED_10;
6315 break;
6316 case CARD_INFO_PORTS_100M:
6317 cmd->base.speed = SPEED_100;
6318 break;
6319 case CARD_INFO_PORTS_1G:
6320 cmd->base.speed = SPEED_1000;
6321 break;
6322 case CARD_INFO_PORTS_10G:
6323 cmd->base.speed = SPEED_10000;
6324 break;
6325 }
6326
6327 return 0;
6328 }
6329 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6330
6331 /* Callback to handle checksum offload command reply from OSA card.
6332 * Verify that required features have been enabled on the card.
6333 * Return error in hdr->return_code as this value is checked by caller.
6334 *
6335 * Always returns zero to indicate no further messages from the OSA card.
6336 */
qeth_ipa_checksum_run_cmd_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)6337 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6338 struct qeth_reply *reply,
6339 unsigned long data)
6340 {
6341 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6342 struct qeth_checksum_cmd *chksum_cb =
6343 (struct qeth_checksum_cmd *)reply->param;
6344
6345 QETH_CARD_TEXT(card, 4, "chkdoccb");
6346 if (qeth_setassparms_inspect_rc(cmd))
6347 return 0;
6348
6349 memset(chksum_cb, 0, sizeof(*chksum_cb));
6350 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6351 chksum_cb->supported =
6352 cmd->data.setassparms.data.chksum.supported;
6353 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6354 }
6355 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6356 chksum_cb->supported =
6357 cmd->data.setassparms.data.chksum.supported;
6358 chksum_cb->enabled =
6359 cmd->data.setassparms.data.chksum.enabled;
6360 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6361 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6362 }
6363 return 0;
6364 }
6365
6366 /* 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,enum qeth_prot_versions prot)6367 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6368 enum qeth_ipa_funcs ipa_func,
6369 __u16 cmd_code, long data,
6370 struct qeth_checksum_cmd *chksum_cb,
6371 enum qeth_prot_versions prot)
6372 {
6373 struct qeth_cmd_buffer *iob;
6374 int rc = -ENOMEM;
6375
6376 QETH_CARD_TEXT(card, 4, "chkdocmd");
6377 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6378 sizeof(__u32), prot);
6379 if (iob)
6380 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6381 qeth_ipa_checksum_run_cmd_cb,
6382 chksum_cb);
6383 return rc;
6384 }
6385
qeth_send_checksum_on(struct qeth_card * card,int cstype,enum qeth_prot_versions prot)6386 static int qeth_send_checksum_on(struct qeth_card *card, int cstype,
6387 enum qeth_prot_versions prot)
6388 {
6389 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6390 struct qeth_checksum_cmd chksum_cb;
6391 int rc;
6392
6393 if (prot == QETH_PROT_IPV4)
6394 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6395 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6396 &chksum_cb, prot);
6397 if (!rc) {
6398 if ((required_features & chksum_cb.supported) !=
6399 required_features)
6400 rc = -EIO;
6401 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6402 cstype == IPA_INBOUND_CHECKSUM)
6403 dev_warn(&card->gdev->dev,
6404 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6405 QETH_CARD_IFNAME(card));
6406 }
6407 if (rc) {
6408 qeth_send_simple_setassparms_prot(card, cstype,
6409 IPA_CMD_ASS_STOP, 0, prot);
6410 dev_warn(&card->gdev->dev,
6411 "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n",
6412 prot, QETH_CARD_IFNAME(card));
6413 return rc;
6414 }
6415 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6416 chksum_cb.supported, &chksum_cb,
6417 prot);
6418 if (!rc) {
6419 if ((required_features & chksum_cb.enabled) !=
6420 required_features)
6421 rc = -EIO;
6422 }
6423 if (rc) {
6424 qeth_send_simple_setassparms_prot(card, cstype,
6425 IPA_CMD_ASS_STOP, 0, prot);
6426 dev_warn(&card->gdev->dev,
6427 "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n",
6428 prot, QETH_CARD_IFNAME(card));
6429 return rc;
6430 }
6431
6432 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6433 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6434 return 0;
6435 }
6436
qeth_set_ipa_csum(struct qeth_card * card,bool on,int cstype,enum qeth_prot_versions prot)6437 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6438 enum qeth_prot_versions prot)
6439 {
6440 int rc = (on) ? qeth_send_checksum_on(card, cstype, prot)
6441 : qeth_send_simple_setassparms_prot(card, cstype,
6442 IPA_CMD_ASS_STOP, 0,
6443 prot);
6444 return rc ? -EIO : 0;
6445 }
6446
qeth_set_ipa_tso(struct qeth_card * card,int on)6447 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6448 {
6449 int rc;
6450
6451 QETH_CARD_TEXT(card, 3, "sttso");
6452
6453 if (on) {
6454 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6455 IPA_CMD_ASS_START, 0);
6456 if (rc) {
6457 dev_warn(&card->gdev->dev,
6458 "Starting outbound TCP segmentation offload for %s failed\n",
6459 QETH_CARD_IFNAME(card));
6460 return -EIO;
6461 }
6462 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6463 } else {
6464 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6465 IPA_CMD_ASS_STOP, 0);
6466 }
6467 return rc;
6468 }
6469
qeth_set_ipa_rx_csum(struct qeth_card * card,bool on)6470 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6471 {
6472 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6473 int rc_ipv6;
6474
6475 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6476 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6477 QETH_PROT_IPV4);
6478 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6479 /* no/one Offload Assist available, so the rc is trivial */
6480 return rc_ipv4;
6481
6482 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6483 QETH_PROT_IPV6);
6484
6485 if (on)
6486 /* enable: success if any Assist is active */
6487 return (rc_ipv6) ? rc_ipv4 : 0;
6488
6489 /* disable: failure if any Assist is still active */
6490 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6491 }
6492
6493 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \
6494 NETIF_F_IPV6_CSUM)
6495 /**
6496 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6497 * @dev: a net_device
6498 */
qeth_enable_hw_features(struct net_device * dev)6499 void qeth_enable_hw_features(struct net_device *dev)
6500 {
6501 struct qeth_card *card = dev->ml_priv;
6502 netdev_features_t features;
6503
6504 rtnl_lock();
6505 features = dev->features;
6506 /* force-off any feature that needs an IPA sequence.
6507 * netdev_update_features() will restart them.
6508 */
6509 dev->features &= ~QETH_HW_FEATURES;
6510 netdev_update_features(dev);
6511 if (features != dev->features)
6512 dev_warn(&card->gdev->dev,
6513 "Device recovery failed to restore all offload features\n");
6514 rtnl_unlock();
6515 }
6516 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6517
qeth_set_features(struct net_device * dev,netdev_features_t features)6518 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6519 {
6520 struct qeth_card *card = dev->ml_priv;
6521 netdev_features_t changed = dev->features ^ features;
6522 int rc = 0;
6523
6524 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6525 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6526
6527 if ((changed & NETIF_F_IP_CSUM)) {
6528 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6529 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6530 if (rc)
6531 changed ^= NETIF_F_IP_CSUM;
6532 }
6533 if (changed & NETIF_F_IPV6_CSUM) {
6534 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6535 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6536 if (rc)
6537 changed ^= NETIF_F_IPV6_CSUM;
6538 }
6539 if (changed & NETIF_F_RXCSUM) {
6540 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6541 if (rc)
6542 changed ^= NETIF_F_RXCSUM;
6543 }
6544 if ((changed & NETIF_F_TSO)) {
6545 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6546 if (rc)
6547 changed ^= NETIF_F_TSO;
6548 }
6549
6550 /* everything changed successfully? */
6551 if ((dev->features ^ features) == changed)
6552 return 0;
6553 /* something went wrong. save changed features and return error */
6554 dev->features ^= changed;
6555 return -EIO;
6556 }
6557 EXPORT_SYMBOL_GPL(qeth_set_features);
6558
qeth_fix_features(struct net_device * dev,netdev_features_t features)6559 netdev_features_t qeth_fix_features(struct net_device *dev,
6560 netdev_features_t features)
6561 {
6562 struct qeth_card *card = dev->ml_priv;
6563
6564 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6565 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6566 features &= ~NETIF_F_IP_CSUM;
6567 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6568 features &= ~NETIF_F_IPV6_CSUM;
6569 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6570 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6571 features &= ~NETIF_F_RXCSUM;
6572 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6573 features &= ~NETIF_F_TSO;
6574 /* if the card isn't up, remove features that require hw changes */
6575 if (card->state == CARD_STATE_DOWN ||
6576 card->state == CARD_STATE_RECOVER)
6577 features &= ~QETH_HW_FEATURES;
6578 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6579 return features;
6580 }
6581 EXPORT_SYMBOL_GPL(qeth_fix_features);
6582
qeth_features_check(struct sk_buff * skb,struct net_device * dev,netdev_features_t features)6583 netdev_features_t qeth_features_check(struct sk_buff *skb,
6584 struct net_device *dev,
6585 netdev_features_t features)
6586 {
6587 /* GSO segmentation builds skbs with
6588 * a (small) linear part for the headers, and
6589 * page frags for the data.
6590 * Compared to a linear skb, the header-only part consumes an
6591 * additional buffer element. This reduces buffer utilization, and
6592 * hurts throughput. So compress small segments into one element.
6593 */
6594 if (netif_needs_gso(skb, features)) {
6595 /* match skb_segment(): */
6596 unsigned int doffset = skb->data - skb_mac_header(skb);
6597 unsigned int hsize = skb_shinfo(skb)->gso_size;
6598 unsigned int hroom = skb_headroom(skb);
6599
6600 /* linearize only if resulting skb allocations are order-0: */
6601 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6602 features &= ~NETIF_F_SG;
6603 }
6604
6605 return vlan_features_check(skb, features);
6606 }
6607 EXPORT_SYMBOL_GPL(qeth_features_check);
6608
qeth_core_init(void)6609 static int __init qeth_core_init(void)
6610 {
6611 int rc;
6612
6613 pr_info("loading core functions\n");
6614 INIT_LIST_HEAD(&qeth_core_card_list.list);
6615 INIT_LIST_HEAD(&qeth_dbf_list);
6616 rwlock_init(&qeth_core_card_list.rwlock);
6617 mutex_init(&qeth_mod_mutex);
6618
6619 qeth_wq = create_singlethread_workqueue("qeth_wq");
6620 if (!qeth_wq) {
6621 rc = -ENOMEM;
6622 goto out_err;
6623 }
6624
6625 rc = qeth_register_dbf_views();
6626 if (rc)
6627 goto dbf_err;
6628 qeth_core_root_dev = root_device_register("qeth");
6629 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6630 if (rc)
6631 goto register_err;
6632 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6633 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6634 if (!qeth_core_header_cache) {
6635 rc = -ENOMEM;
6636 goto slab_err;
6637 }
6638 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6639 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6640 if (!qeth_qdio_outbuf_cache) {
6641 rc = -ENOMEM;
6642 goto cqslab_err;
6643 }
6644 rc = ccw_driver_register(&qeth_ccw_driver);
6645 if (rc)
6646 goto ccw_err;
6647 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6648 if (rc)
6649 goto ccwgroup_err;
6650
6651 return 0;
6652
6653 ccwgroup_err:
6654 ccw_driver_unregister(&qeth_ccw_driver);
6655 ccw_err:
6656 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6657 cqslab_err:
6658 kmem_cache_destroy(qeth_core_header_cache);
6659 slab_err:
6660 root_device_unregister(qeth_core_root_dev);
6661 register_err:
6662 qeth_unregister_dbf_views();
6663 dbf_err:
6664 destroy_workqueue(qeth_wq);
6665 out_err:
6666 pr_err("Initializing the qeth device driver failed\n");
6667 return rc;
6668 }
6669
qeth_core_exit(void)6670 static void __exit qeth_core_exit(void)
6671 {
6672 qeth_clear_dbf_list();
6673 destroy_workqueue(qeth_wq);
6674 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6675 ccw_driver_unregister(&qeth_ccw_driver);
6676 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6677 kmem_cache_destroy(qeth_core_header_cache);
6678 root_device_unregister(qeth_core_root_dev);
6679 qeth_unregister_dbf_views();
6680 pr_info("core functions removed\n");
6681 }
6682
6683 module_init(qeth_core_init);
6684 module_exit(qeth_core_exit);
6685 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6686 MODULE_DESCRIPTION("qeth core functions");
6687 MODULE_LICENSE("GPL");
6688