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s390/qeth: dynamically allocate vnicc cmds
[linux-block.git] / drivers / s390 / net / qeth_core_main.c
CommitLineData
ab9953ff 1// SPDX-License-Identifier: GPL-2.0
4a71df50 2/*
bbcfcdc8 3 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 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
74eacdb9
FB		 10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
0d55303c 13#include <linux/compat.h>
4a71df50
FB		 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>
55494264 19#include <linux/log2.h>
4a71df50 20#include <linux/ip.h>
4a71df50
FB		 21#include <linux/tcp.h>
22#include <linux/mii.h>
4e2fe4ed 23#include <linux/mm.h>
4a71df50 24#include <linux/kthread.h>
5a0e3ad6 25#include <linux/slab.h>
6d69b1f1
JW		 26#include <linux/if_vlan.h>
27#include <linux/netdevice.h>
28#include <linux/netdev_features.h>
29#include <linux/skbuff.h>
aec45e85 30#include <linux/vmalloc.h>
6d69b1f1 31
b3332930 32#include <net/iucv/af_iucv.h>
290b8348 33#include <net/dsfield.h>
4a71df50 34
ab4227cb 35#include <asm/ebcdic.h>
2bf29df7 36#include <asm/chpid.h>
ab4227cb 37#include <asm/io.h>
1da74b1c 38#include <asm/sysinfo.h>
ec61bd2f
JW		 39#include <asm/diag.h>
40#include <asm/cio.h>
41#include <asm/ccwdev.h>
615dff22 42#include <asm/cpcmd.h>
4a71df50
FB		 43
44#include "qeth_core.h"
4a71df50 45
d11ba0c4
PT		 46struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
47 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
48 /* N P A M L V H */
49 [QETH_DBF_SETUP] = {"qeth_setup",
50 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
f7e1e65d
SO		 51 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
52 &debug_sprintf_view, NULL},
d11ba0c4
PT		 53 [QETH_DBF_CTRL] = {"qeth_control",
54 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
55};
56EXPORT_SYMBOL_GPL(qeth_dbf);
4a71df50 57
683d718a
FB		 58struct kmem_cache *qeth_core_header_cache;
59EXPORT_SYMBOL_GPL(qeth_core_header_cache);
0da9581d 60static struct kmem_cache *qeth_qdio_outbuf_cache;
4a71df50
FB		 61
62static struct device *qeth_core_root_dev;
4a71df50 63static struct lock_class_key qdio_out_skb_queue_key;
4a71df50 64
988a747d 65static void qeth_issue_next_read_cb(struct qeth_card *card,
988a747d 66 struct qeth_cmd_buffer *iob);
4a71df50
FB		 67static void qeth_free_buffer_pool(struct qeth_card *);
68static int qeth_qdio_establish(struct qeth_card *);
41c47da3 69static void qeth_free_qdio_queues(struct qeth_card *card);
b3332930
FB		 70static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
71 struct qeth_qdio_out_buffer *buf,
72 enum iucv_tx_notify notification);
73static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
72861ae7 74static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
4a71df50 75
0f54761d
SR		 76static void qeth_close_dev_handler(struct work_struct *work)
77{
78 struct qeth_card *card;
79
80 card = container_of(work, struct qeth_card, close_dev_work);
81 QETH_CARD_TEXT(card, 2, "cldevhdl");
0f54761d
SR		 82 ccwgroup_set_offline(card->gdev);
83}
84
cef6ff22 85static const char *qeth_get_cardname(struct qeth_card *card)
4a71df50 86{
379ac99e 87 if (IS_VM_NIC(card)) {
4a71df50 88 switch (card->info.type) {
5113fec0 89 case QETH_CARD_TYPE_OSD:
7096b187 90 return " Virtual NIC QDIO";
4a71df50 91 case QETH_CARD_TYPE_IQD:
7096b187 92 return " Virtual NIC Hiper";
5113fec0 93 case QETH_CARD_TYPE_OSM:
7096b187 94 return " Virtual NIC QDIO - OSM";
5113fec0 95 case QETH_CARD_TYPE_OSX:
7096b187 96 return " Virtual NIC QDIO - OSX";
4a71df50
FB		 97 default:
98 return " unknown";
99 }
100 } else {
101 switch (card->info.type) {
5113fec0 102 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 103 return " OSD Express";
104 case QETH_CARD_TYPE_IQD:
105 return " HiperSockets";
106 case QETH_CARD_TYPE_OSN:
107 return " OSN QDIO";
5113fec0
UB		 108 case QETH_CARD_TYPE_OSM:
109 return " OSM QDIO";
110 case QETH_CARD_TYPE_OSX:
111 return " OSX QDIO";
4a71df50
FB		 112 default:
113 return " unknown";
114 }
115 }
116 return " n/a";
117}
118
119/* max length to be returned: 14 */
120const char *qeth_get_cardname_short(struct qeth_card *card)
121{
379ac99e 122 if (IS_VM_NIC(card)) {
4a71df50 123 switch (card->info.type) {
5113fec0 124 case QETH_CARD_TYPE_OSD:
7096b187 125 return "Virt.NIC QDIO";
4a71df50 126 case QETH_CARD_TYPE_IQD:
7096b187 127 return "Virt.NIC Hiper";
5113fec0 128 case QETH_CARD_TYPE_OSM:
7096b187 129 return "Virt.NIC OSM";
5113fec0 130 case QETH_CARD_TYPE_OSX:
7096b187 131 return "Virt.NIC OSX";
4a71df50
FB		 132 default:
133 return "unknown";
134 }
135 } else {
136 switch (card->info.type) {
5113fec0 137 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 138 switch (card->info.link_type) {
139 case QETH_LINK_TYPE_FAST_ETH:
140 return "OSD_100";
141 case QETH_LINK_TYPE_HSTR:
142 return "HSTR";
143 case QETH_LINK_TYPE_GBIT_ETH:
144 return "OSD_1000";
145 case QETH_LINK_TYPE_10GBIT_ETH:
146 return "OSD_10GIG";
54e049c2
JW		 147 case QETH_LINK_TYPE_25GBIT_ETH:
148 return "OSD_25GIG";
4a71df50
FB		 149 case QETH_LINK_TYPE_LANE_ETH100:
150 return "OSD_FE_LANE";
151 case QETH_LINK_TYPE_LANE_TR:
152 return "OSD_TR_LANE";
153 case QETH_LINK_TYPE_LANE_ETH1000:
154 return "OSD_GbE_LANE";
155 case QETH_LINK_TYPE_LANE:
156 return "OSD_ATM_LANE";
157 default:
158 return "OSD_Express";
159 }
160 case QETH_CARD_TYPE_IQD:
161 return "HiperSockets";
162 case QETH_CARD_TYPE_OSN:
163 return "OSN";
5113fec0
UB		 164 case QETH_CARD_TYPE_OSM:
165 return "OSM_1000";
166 case QETH_CARD_TYPE_OSX:
167 return "OSX_10GIG";
4a71df50
FB		 168 default:
169 return "unknown";
170 }
171 }
172 return "n/a";
173}
174
175void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
176 int clear_start_mask)
177{
178 unsigned long flags;
179
180 spin_lock_irqsave(&card->thread_mask_lock, flags);
181 card->thread_allowed_mask = threads;
182 if (clear_start_mask)
183 card->thread_start_mask &= threads;
184 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
185 wake_up(&card->wait_q);
186}
187EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
188
189int qeth_threads_running(struct qeth_card *card, unsigned long threads)
190{
191 unsigned long flags;
192 int rc = 0;
193
194 spin_lock_irqsave(&card->thread_mask_lock, flags);
195 rc = (card->thread_running_mask & threads);
196 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
197 return rc;
198}
199EXPORT_SYMBOL_GPL(qeth_threads_running);
200
4a71df50
FB		 201void qeth_clear_working_pool_list(struct qeth_card *card)
202{
203 struct qeth_buffer_pool_entry *pool_entry, *tmp;
204
847a50fd 205 QETH_CARD_TEXT(card, 5, "clwrklst");
4a71df50
FB		 206 list_for_each_entry_safe(pool_entry, tmp,
207 &card->qdio.in_buf_pool.entry_list, list){
208 list_del(&pool_entry->list);
209 }
210}
211EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
212
213static int qeth_alloc_buffer_pool(struct qeth_card *card)
214{
215 struct qeth_buffer_pool_entry *pool_entry;
216 void *ptr;
217 int i, j;
218
847a50fd 219 QETH_CARD_TEXT(card, 5, "alocpool");
4a71df50 220 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
b3332930 221 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
4a71df50
FB		 222 if (!pool_entry) {
223 qeth_free_buffer_pool(card);
224 return -ENOMEM;
225 }
226 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
508b3c4f 227 ptr = (void *) __get_free_page(GFP_KERNEL);
4a71df50
FB		 228 if (!ptr) {
229 while (j > 0)
230 free_page((unsigned long)
231 pool_entry->elements[--j]);
232 kfree(pool_entry);
233 qeth_free_buffer_pool(card);
234 return -ENOMEM;
235 }
236 pool_entry->elements[j] = ptr;
237 }
238 list_add(&pool_entry->init_list,
239 &card->qdio.init_pool.entry_list);
240 }
241 return 0;
242}
243
244int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
245{
847a50fd 246 QETH_CARD_TEXT(card, 2, "realcbp");
4a71df50 247
d7d543f2 248 if (card->state != CARD_STATE_DOWN)
4a71df50
FB		 249 return -EPERM;
250
251 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
252 qeth_clear_working_pool_list(card);
253 qeth_free_buffer_pool(card);
254 card->qdio.in_buf_pool.buf_count = bufcnt;
255 card->qdio.init_pool.buf_count = bufcnt;
256 return qeth_alloc_buffer_pool(card);
257}
76b11f8e 258EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
4a71df50 259
4601ba6c
SO		 260static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
261{
6d284bde
SO		 262 if (!q)
263 return;
264
265 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
4601ba6c
SO		 266 kfree(q);
267}
268
269static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
270{
271 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
272 int i;
273
274 if (!q)
275 return NULL;
276
6d284bde
SO		 277 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
278 kfree(q);
279 return NULL;
280 }
281
4601ba6c 282 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
6d284bde 283 q->bufs[i].buffer = q->qdio_bufs[i];
4601ba6c
SO		 284
285 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
286 return q;
287}
288
cef6ff22 289static int qeth_cq_init(struct qeth_card *card)
0da9581d
EL		 290{
291 int rc;
292
293 if (card->options.cq == QETH_CQ_ENABLED) {
57a688aa 294 QETH_CARD_TEXT(card, 2, "cqinit");
6d284bde
SO		 295 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
296 QDIO_MAX_BUFFERS_PER_Q);
0da9581d
EL		 297 card->qdio.c_q->next_buf_to_init = 127;
298 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
299 card->qdio.no_in_queues - 1, 0,
300 127);
301 if (rc) {
57a688aa 302 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
0da9581d
EL		 303 goto out;
304 }
305 }
306 rc = 0;
307out:
308 return rc;
309}
310
cef6ff22 311static int qeth_alloc_cq(struct qeth_card *card)
0da9581d
EL		 312{
313 int rc;
314
315 if (card->options.cq == QETH_CQ_ENABLED) {
316 int i;
317 struct qdio_outbuf_state *outbuf_states;
318
57a688aa 319 QETH_CARD_TEXT(card, 2, "cqon");
4601ba6c 320 card->qdio.c_q = qeth_alloc_qdio_queue();
0da9581d
EL		 321 if (!card->qdio.c_q) {
322 rc = -1;
323 goto kmsg_out;
324 }
0da9581d 325 card->qdio.no_in_queues = 2;
4a912f98 326 card->qdio.out_bufstates =
6396bb22
KC		 327 kcalloc(card->qdio.no_out_queues *
328 QDIO_MAX_BUFFERS_PER_Q,
329 sizeof(struct qdio_outbuf_state),
330 GFP_KERNEL);
0da9581d
EL		 331 outbuf_states = card->qdio.out_bufstates;
332 if (outbuf_states == NULL) {
333 rc = -1;
334 goto free_cq_out;
335 }
336 for (i = 0; i < card->qdio.no_out_queues; ++i) {
337 card->qdio.out_qs[i]->bufstates = outbuf_states;
338 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
339 }
340 } else {
57a688aa 341 QETH_CARD_TEXT(card, 2, "nocq");
0da9581d
EL		 342 card->qdio.c_q = NULL;
343 card->qdio.no_in_queues = 1;
344 }
57a688aa 345 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
0da9581d
EL		 346 rc = 0;
347out:
348 return rc;
349free_cq_out:
4601ba6c 350 qeth_free_qdio_queue(card->qdio.c_q);
0da9581d
EL		 351 card->qdio.c_q = NULL;
352kmsg_out:
353 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
354 goto out;
355}
356
cef6ff22 357static void qeth_free_cq(struct qeth_card *card)
0da9581d
EL		 358{
359 if (card->qdio.c_q) {
360 --card->qdio.no_in_queues;
4601ba6c 361 qeth_free_qdio_queue(card->qdio.c_q);
0da9581d
EL		 362 card->qdio.c_q = NULL;
363 }
364 kfree(card->qdio.out_bufstates);
365 card->qdio.out_bufstates = NULL;
366}
367
cef6ff22
JW		 368static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
369 int delayed)
370{
b3332930
FB		 371 enum iucv_tx_notify n;
372
373 switch (sbalf15) {
374 case 0:
375 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
376 break;
377 case 4:
378 case 16:
379 case 17:
380 case 18:
381 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
382 TX_NOTIFY_UNREACHABLE;
383 break;
384 default:
385 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
386 TX_NOTIFY_GENERALERROR;
387 break;
388 }
389
390 return n;
391}
392
cef6ff22
JW		 393static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
394 int forced_cleanup)
0da9581d 395{
72861ae7
EL		 396 if (q->card->options.cq != QETH_CQ_ENABLED)
397 return;
398
0da9581d
EL		 399 if (q->bufs[bidx]->next_pending != NULL) {
400 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
401 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
402
403 while (c) {
404 if (forced_cleanup ||
405 atomic_read(&c->state) ==
406 QETH_QDIO_BUF_HANDLED_DELAYED) {
407 struct qeth_qdio_out_buffer *f = c;
408 QETH_CARD_TEXT(f->q->card, 5, "fp");
409 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
b3332930
FB		 410 /* release here to avoid interleaving between
411 outbound tasklet and inbound tasklet
412 regarding notifications and lifecycle */
413 qeth_release_skbs(c);
414
0da9581d 415 c = f->next_pending;
18af5c17 416 WARN_ON_ONCE(head->next_pending != f);
0da9581d
EL		 417 head->next_pending = c;
418 kmem_cache_free(qeth_qdio_outbuf_cache, f);
419 } else {
420 head = c;
421 c = c->next_pending;
422 }
423
424 }
425 }
72861ae7
EL		 426 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
427 QETH_QDIO_BUF_HANDLED_DELAYED)) {
428 /* for recovery situations */
72861ae7
EL		 429 qeth_init_qdio_out_buf(q, bidx);
430 QETH_CARD_TEXT(q->card, 2, "clprecov");
431 }
0da9581d
EL		 432}
433
434
cef6ff22
JW		 435static void qeth_qdio_handle_aob(struct qeth_card *card,
436 unsigned long phys_aob_addr)
437{
0da9581d
EL		 438 struct qaob *aob;
439 struct qeth_qdio_out_buffer *buffer;
b3332930 440 enum iucv_tx_notify notification;
ce28867f 441 unsigned int i;
0da9581d
EL		 442
443 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
444 QETH_CARD_TEXT(card, 5, "haob");
445 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
446 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
447 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
448
b3332930
FB		 449 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
450 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
451 notification = TX_NOTIFY_OK;
452 } else {
18af5c17
SR		 453 WARN_ON_ONCE(atomic_read(&buffer->state) !=
454 QETH_QDIO_BUF_PENDING);
b3332930
FB		 455 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
456 notification = TX_NOTIFY_DELAYED_OK;
457 }
458
459 if (aob->aorc != 0) {
460 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
461 notification = qeth_compute_cq_notification(aob->aorc, 1);
462 }
463 qeth_notify_skbs(buffer->q, buffer, notification);
464
ce28867f
JW		 465 /* Free dangling allocations. The attached skbs are handled by
466 * qeth_cleanup_handled_pending().
467 */
468 for (i = 0;
469 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
470 i++) {
471 if (aob->sba[i] && buffer->is_header[i])
472 kmem_cache_free(qeth_core_header_cache,
473 (void *) aob->sba[i]);
474 }
475 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
72861ae7 476
0da9581d
EL		 477 qdio_release_aob(aob);
478}
479
480static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
481{
482 return card->options.cq == QETH_CQ_ENABLED &&
483 card->qdio.c_q != NULL &&
484 queue != 0 &&
485 queue == card->qdio.no_in_queues - 1;
486}
487
40554895
JW		 488static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
489 void *data)
45ca2fd6
JW		 490{
491 ccw->cmd_code = cmd_code;
40554895 492 ccw->flags = flags | CCW_FLAG_SLI;
45ca2fd6
JW		 493 ccw->count = len;
494 ccw->cda = (__u32) __pa(data);
495}
496
17bf8c9b 497static int __qeth_issue_next_read(struct qeth_card *card)
4a71df50 498{
d9b9f40b
JW		 499 struct qeth_cmd_buffer *iob = card->read_cmd;
500 struct qeth_channel *channel = iob->channel;
501 struct ccw1 *ccw = __ccw_from_cmd(iob);
750b1625 502 int rc;
4a71df50 503
847a50fd 504 QETH_CARD_TEXT(card, 5, "issnxrd");
750b1625 505 if (channel->state != CH_STATE_UP)
4a71df50 506 return -EIO;
988a747d 507
d9b9f40b
JW		 508 memset(iob->data, 0, iob->length);
509 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
988a747d 510 iob->callback = qeth_issue_next_read_cb;
d9b9f40b
JW		 511 /* keep the cmd alive after completion: */
512 qeth_get_cmd(iob);
513
847a50fd 514 QETH_CARD_TEXT(card, 6, "noirqpnd");
40554895 515 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
4a71df50 516 if (rc) {
e19e5be8
JW		 517 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
518 rc, CARD_DEVID(card));
750b1625 519 atomic_set(&channel->irq_pending, 0);
fcda7f73 520 qeth_release_buffer(iob);
908abbb5 521 card->read_or_write_problem = 1;
4a71df50
FB		 522 qeth_schedule_recovery(card);
523 wake_up(&card->wait_q);
524 }
525 return rc;
526}
527
17bf8c9b
JW		 528static int qeth_issue_next_read(struct qeth_card *card)
529{
530 int ret;
531
532 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
533 ret = __qeth_issue_next_read(card);
534 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
535
536 return ret;
537}
538
4a71df50
FB		 539static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
540{
541 struct qeth_reply *reply;
542
782e4a79 543 reply = kzalloc(sizeof(*reply), GFP_KERNEL);
4a71df50 544 if (reply) {
ae695927 545 refcount_set(&reply->refcnt, 1);
782e4a79 546 init_completion(&reply->received);
6531084c 547 }
4a71df50
FB		 548 return reply;
549}
550
551static void qeth_get_reply(struct qeth_reply *reply)
552{
ae695927 553 refcount_inc(&reply->refcnt);
4a71df50
FB		 554}
555
556static void qeth_put_reply(struct qeth_reply *reply)
557{
ae695927 558 if (refcount_dec_and_test(&reply->refcnt))
4a71df50
FB		 559 kfree(reply);
560}
561
0951c6ba
JW		 562static void qeth_enqueue_reply(struct qeth_card *card, struct qeth_reply *reply)
563{
564 spin_lock_irq(&card->lock);
565 list_add_tail(&reply->list, &card->cmd_waiter_list);
566 spin_unlock_irq(&card->lock);
567}
568
569static void qeth_dequeue_reply(struct qeth_card *card, struct qeth_reply *reply)
570{
571 spin_lock_irq(&card->lock);
572 list_del(&reply->list);
573 spin_unlock_irq(&card->lock);
574}
575
0ce37ec2 576void qeth_notify_reply(struct qeth_reply *reply, int reason)
0951c6ba 577{
61e04465 578 reply->rc = reason;
782e4a79 579 complete(&reply->received);
0951c6ba 580}
0ce37ec2 581EXPORT_SYMBOL_GPL(qeth_notify_reply);
0951c6ba 582
d11ba0c4 583static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
4a71df50
FB		 584 struct qeth_card *card)
585{
048a7f8b 586 const char *ipa_name;
d11ba0c4 587 int com = cmd->hdr.command;
4a71df50 588 ipa_name = qeth_get_ipa_cmd_name(com);
e19e5be8 589
d11ba0c4 590 if (rc)
e19e5be8
JW		 591 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
592 ipa_name, com, CARD_DEVID(card), rc,
593 qeth_get_ipa_msg(rc));
d11ba0c4 594 else
e19e5be8
JW		 595 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
596 ipa_name, com, CARD_DEVID(card));
4a71df50
FB		 597}
598
599static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
d19b93f4 600 struct qeth_ipa_cmd *cmd)
4a71df50 601{
847a50fd 602 QETH_CARD_TEXT(card, 5, "chkipad");
d19b93f4
JW		 603
604 if (IS_IPA_REPLY(cmd)) {
605 if (cmd->hdr.command != IPA_CMD_SETCCID &&
606 cmd->hdr.command != IPA_CMD_DELCCID &&
607 cmd->hdr.command != IPA_CMD_MODCCID &&
608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
609 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
610 return cmd;
611 }
612
613 /* handle unsolicited event: */
614 switch (cmd->hdr.command) {
615 case IPA_CMD_STOPLAN:
616 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
617 dev_err(&card->gdev->dev,
618 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
619 QETH_CARD_IFNAME(card));
dcef5cad 620 schedule_work(&card->close_dev_work);
4a71df50 621 } else {
d19b93f4
JW		 622 dev_warn(&card->gdev->dev,
623 "The link for interface %s on CHPID 0x%X failed\n",
624 QETH_CARD_IFNAME(card), card->info.chpid);
625 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
91cc98f5 626 netif_carrier_off(card->dev);
4a71df50 627 }
d19b93f4
JW		 628 return NULL;
629 case IPA_CMD_STARTLAN:
630 dev_info(&card->gdev->dev,
631 "The link for %s on CHPID 0x%X has been restored\n",
632 QETH_CARD_IFNAME(card), card->info.chpid);
d19b93f4
JW		 633 if (card->info.hwtrap)
634 card->info.hwtrap = 2;
635 qeth_schedule_recovery(card);
636 return NULL;
637 case IPA_CMD_SETBRIDGEPORT_IQD:
638 case IPA_CMD_SETBRIDGEPORT_OSA:
639 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
640 if (card->discipline->control_event_handler(card, cmd))
641 return cmd;
642 return NULL;
643 case IPA_CMD_MODCCID:
644 return cmd;
645 case IPA_CMD_REGISTER_LOCAL_ADDR:
646 QETH_CARD_TEXT(card, 3, "irla");
647 return NULL;
648 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
649 QETH_CARD_TEXT(card, 3, "urla");
650 return NULL;
651 default:
652 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
653 return cmd;
4a71df50 654 }
4a71df50
FB		 655}
656
657void qeth_clear_ipacmd_list(struct qeth_card *card)
658{
0951c6ba 659 struct qeth_reply *reply;
4a71df50
FB		 660 unsigned long flags;
661
847a50fd 662 QETH_CARD_TEXT(card, 4, "clipalst");
4a71df50
FB		 663
664 spin_lock_irqsave(&card->lock, flags);
61e04465
JW		 665 list_for_each_entry(reply, &card->cmd_waiter_list, list)
666 qeth_notify_reply(reply, -EIO);
4a71df50
FB		 667 spin_unlock_irqrestore(&card->lock, flags);
668}
669EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
670
5113fec0
UB		 671static int qeth_check_idx_response(struct qeth_card *card,
672 unsigned char *buffer)
4a71df50 673{
d11ba0c4 674 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
4a71df50 675 if ((buffer[2] & 0xc0) == 0xc0) {
e19e5be8 676 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
d857e111 677 buffer[4]);
847a50fd
CO		 678 QETH_CARD_TEXT(card, 2, "ckidxres");
679 QETH_CARD_TEXT(card, 2, " idxterm");
680 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
5113fec0
UB		 681 if (buffer[4] == 0xf6) {
682 dev_err(&card->gdev->dev,
683 "The qeth device is not configured "
684 "for the OSI layer required by z/VM\n");
685 return -EPERM;
686 }
4a71df50
FB		 687 return -EIO;
688 }
689 return 0;
690}
691
d9b9f40b
JW		 692static void qeth_put_cmd(struct qeth_cmd_buffer *iob)
693{
694 if (refcount_dec_and_test(&iob->ref_count)) {
695 if (iob->reply)
696 qeth_put_reply(iob->reply);
697 kfree(iob->data);
698 kfree(iob);
699 }
700}
701
4a71df50
FB		 702static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
703{
704 __u8 index;
705
4a71df50
FB		 706 index = channel->io_buf_no;
707 do {
708 if (channel->iob[index].state == BUF_STATE_FREE) {
709 channel->iob[index].state = BUF_STATE_LOCKED;
782e4a79 710 channel->iob[index].timeout = QETH_TIMEOUT;
4a71df50
FB		 711 channel->io_buf_no = (channel->io_buf_no + 1) %
712 QETH_CMD_BUFFER_NO;
713 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
714 return channel->iob + index;
715 }
716 index = (index + 1) % QETH_CMD_BUFFER_NO;
717 } while (index != channel->io_buf_no);
718
719 return NULL;
720}
721
fcda7f73 722void qeth_release_buffer(struct qeth_cmd_buffer *iob)
4a71df50 723{
fcda7f73 724 struct qeth_channel *channel = iob->channel;
4a71df50
FB		 725 unsigned long flags;
726
40554895 727 if (iob->state == BUF_STATE_MALLOC) {
d9b9f40b 728 qeth_put_cmd(iob);
40554895
JW		 729 return;
730 }
731
4a71df50 732 spin_lock_irqsave(&channel->iob_lock, flags);
4a71df50 733 iob->state = BUF_STATE_FREE;
988a747d 734 iob->callback = NULL;
54daaca7
JW		 735 if (iob->reply) {
736 qeth_put_reply(iob->reply);
737 iob->reply = NULL;
738 }
4a71df50 739 spin_unlock_irqrestore(&channel->iob_lock, flags);
039055b9 740 wake_up(&channel->wait_q);
4a71df50
FB		 741}
742EXPORT_SYMBOL_GPL(qeth_release_buffer);
743
8f6637b8 744static void qeth_release_buffer_cb(struct qeth_card *card,
8f6637b8
JW		 745 struct qeth_cmd_buffer *iob)
746{
fcda7f73 747 qeth_release_buffer(iob);
8f6637b8
JW		 748}
749
54daaca7
JW		 750static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
751{
752 struct qeth_reply *reply = iob->reply;
753
61e04465
JW		 754 if (reply)
755 qeth_notify_reply(reply, rc);
fcda7f73 756 qeth_release_buffer(iob);
54daaca7
JW		 757}
758
a59d121d 759static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
4a71df50
FB		 760{
761 struct qeth_cmd_buffer *buffer = NULL;
762 unsigned long flags;
763
764 spin_lock_irqsave(&channel->iob_lock, flags);
765 buffer = __qeth_get_buffer(channel);
766 spin_unlock_irqrestore(&channel->iob_lock, flags);
767 return buffer;
768}
4a71df50 769
a59d121d
JW		 770struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
771 unsigned int length, unsigned int ccws,
772 long timeout)
40554895
JW		 773{
774 struct qeth_cmd_buffer *iob;
775
776 if (length > QETH_BUFSIZE)
777 return NULL;
778
779 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
780 if (!iob)
781 return NULL;
782
783 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
784 GFP_KERNEL | GFP_DMA);
785 if (!iob->data) {
786 kfree(iob);
787 return NULL;
788 }
789
790 iob->state = BUF_STATE_MALLOC;
d9b9f40b 791 refcount_set(&iob->ref_count, 1);
40554895
JW		 792 iob->channel = channel;
793 iob->timeout = timeout;
794 iob->length = length;
795 return iob;
796}
a59d121d 797EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
40554895 798
4a71df50
FB		 799void qeth_clear_cmd_buffers(struct qeth_channel *channel)
800{
801 int cnt;
802
803 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
fcda7f73 804 qeth_release_buffer(&channel->iob[cnt]);
4a71df50
FB		 805 channel->io_buf_no = 0;
806}
807EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
808
988a747d 809static void qeth_issue_next_read_cb(struct qeth_card *card,
988a747d 810 struct qeth_cmd_buffer *iob)
4a71df50 811{
d19b93f4 812 struct qeth_ipa_cmd *cmd = NULL;
0951c6ba
JW		 813 struct qeth_reply *reply = NULL;
814 struct qeth_reply *r;
4a71df50 815 unsigned long flags;
5113fec0 816 int rc = 0;
4a71df50 817
847a50fd 818 QETH_CARD_TEXT(card, 4, "sndctlcb");
5113fec0
UB		 819 rc = qeth_check_idx_response(card, iob->data);
820 switch (rc) {
821 case 0:
822 break;
823 case -EIO:
4a71df50 824 qeth_clear_ipacmd_list(card);
5113fec0 825 qeth_schedule_recovery(card);
01fc3e86 826 /* fall through */
5113fec0 827 default:
4a71df50
FB		 828 goto out;
829 }
830
d19b93f4
JW		 831 if (IS_IPA(iob->data)) {
832 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
833 cmd = qeth_check_ipa_data(card, cmd);
d782d80f
JW		 834 if (!cmd)
835 goto out;
836 if (IS_OSN(card) && card->osn_info.assist_cb &&
837 cmd->hdr.command != IPA_CMD_STARTLAN) {
838 card->osn_info.assist_cb(card->dev, cmd);
839 goto out;
840 }
841 } else {
842 /* non-IPA commands should only flow during initialization */
843 if (card->state != CARD_STATE_DOWN)
844 goto out;
4a71df50
FB		 845 }
846
0951c6ba 847 /* match against pending cmd requests */
4a71df50 848 spin_lock_irqsave(&card->lock, flags);
0951c6ba
JW		 849 list_for_each_entry(r, &card->cmd_waiter_list, list) {
850 if ((r->seqno == QETH_IDX_COMMAND_SEQNO) ||
851 (cmd && (r->seqno == cmd->hdr.seqno))) {
852 reply = r;
853 /* take the object outside the lock */
4a71df50 854 qeth_get_reply(reply);
0951c6ba 855 break;
4a71df50
FB		 856 }
857 }
858 spin_unlock_irqrestore(&card->lock, flags);
0951c6ba
JW		 859
860 if (!reply)
861 goto out;
862
4b7ae122
JW		 863 if (!reply->callback) {
864 rc = 0;
865 } else {
0951c6ba
JW		 866 if (cmd) {
867 reply->offset = (u16)((char *)cmd - (char *)iob->data);
4b7ae122
JW		 868 rc = reply->callback(card, reply, (unsigned long)cmd);
869 } else {
870 rc = reply->callback(card, reply, (unsigned long)iob);
871 }
0951c6ba 872 }
0951c6ba 873
61e04465
JW		 874 if (rc <= 0)
875 qeth_notify_reply(reply, rc);
0951c6ba
JW		 876 qeth_put_reply(reply);
877
4a71df50
FB		 878out:
879 memcpy(&card->seqno.pdu_hdr_ack,
880 QETH_PDU_HEADER_SEQ_NO(iob->data),
881 QETH_SEQ_NO_LENGTH);
fcda7f73 882 qeth_release_buffer(iob);
7cbc9e8f 883 __qeth_issue_next_read(card);
4a71df50
FB		 884}
885
4a71df50
FB		 886static int qeth_set_thread_start_bit(struct qeth_card *card,
887 unsigned long thread)
888{
889 unsigned long flags;
890
891 spin_lock_irqsave(&card->thread_mask_lock, flags);
892 if (!(card->thread_allowed_mask & thread) ||
893 (card->thread_start_mask & thread)) {
894 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
895 return -EPERM;
896 }
897 card->thread_start_mask |= thread;
898 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
899 return 0;
900}
901
902void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
903{
904 unsigned long flags;
905
906 spin_lock_irqsave(&card->thread_mask_lock, flags);
907 card->thread_start_mask &= ~thread;
908 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
909 wake_up(&card->wait_q);
910}
911EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
912
913void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
914{
915 unsigned long flags;
916
917 spin_lock_irqsave(&card->thread_mask_lock, flags);
918 card->thread_running_mask &= ~thread;
919 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1063e432 920 wake_up_all(&card->wait_q);
4a71df50
FB		 921}
922EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
923
924static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
925{
926 unsigned long flags;
927 int rc = 0;
928
929 spin_lock_irqsave(&card->thread_mask_lock, flags);
930 if (card->thread_start_mask & thread) {
931 if ((card->thread_allowed_mask & thread) &&
932 !(card->thread_running_mask & thread)) {
933 rc = 1;
934 card->thread_start_mask &= ~thread;
935 card->thread_running_mask |= thread;
936 } else
937 rc = -EPERM;
938 }
939 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
940 return rc;
941}
942
943int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
944{
945 int rc = 0;
946
947 wait_event(card->wait_q,
948 (rc = __qeth_do_run_thread(card, thread)) >= 0);
949 return rc;
950}
951EXPORT_SYMBOL_GPL(qeth_do_run_thread);
952
953void qeth_schedule_recovery(struct qeth_card *card)
954{
847a50fd 955 QETH_CARD_TEXT(card, 2, "startrec");
4a71df50
FB		 956 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
957 schedule_work(&card->kernel_thread_starter);
958}
959EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
960
8d908eb0
JW		 961static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
962 struct irb *irb)
4a71df50
FB		 963{
964 int dstat, cstat;
965 char *sense;
966
967 sense = (char *) irb->ecw;
23d805b6
PO		 968 cstat = irb->scsw.cmd.cstat;
969 dstat = irb->scsw.cmd.dstat;
4a71df50
FB		 970
971 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
972 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
973 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
847a50fd 974 QETH_CARD_TEXT(card, 2, "CGENCHK");
74eacdb9
FB		 975 dev_warn(&cdev->dev, "The qeth device driver "
976 "failed to recover an error on the device\n");
e19e5be8
JW		 977 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
978 CCW_DEVID(cdev), dstat, cstat);
4a71df50
FB		 979 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
980 16, 1, irb, 64, 1);
981 return 1;
982 }
983
984 if (dstat & DEV_STAT_UNIT_CHECK) {
985 if (sense[SENSE_RESETTING_EVENT_BYTE] &
986 SENSE_RESETTING_EVENT_FLAG) {
847a50fd 987 QETH_CARD_TEXT(card, 2, "REVIND");
4a71df50
FB		 988 return 1;
989 }
990 if (sense[SENSE_COMMAND_REJECT_BYTE] &
991 SENSE_COMMAND_REJECT_FLAG) {
847a50fd 992 QETH_CARD_TEXT(card, 2, "CMDREJi");
28a7e4c9 993 return 1;
4a71df50
FB		 994 }
995 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
847a50fd 996 QETH_CARD_TEXT(card, 2, "AFFE");
4a71df50
FB		 997 return 1;
998 }
999 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
847a50fd 1000 QETH_CARD_TEXT(card, 2, "ZEROSEN");
4a71df50
FB		 1001 return 0;
1002 }
847a50fd 1003 QETH_CARD_TEXT(card, 2, "DGENCHK");
4a71df50
FB		 1004 return 1;
1005 }
1006 return 0;
1007}
1008
54daaca7 1009static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
2066e1db 1010 struct irb *irb)
4a71df50 1011{
8d908eb0 1012 if (!IS_ERR(irb))
4a71df50
FB		 1013 return 0;
1014
1015 switch (PTR_ERR(irb)) {
1016 case -EIO:
e19e5be8
JW		 1017 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1018 CCW_DEVID(cdev));
847a50fd
CO		 1019 QETH_CARD_TEXT(card, 2, "ckirberr");
1020 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
54daaca7 1021 return -EIO;
4a71df50 1022 case -ETIMEDOUT:
74eacdb9
FB		 1023 dev_warn(&cdev->dev, "A hardware operation timed out"
1024 " on the device\n");
847a50fd
CO		 1025 QETH_CARD_TEXT(card, 2, "ckirberr");
1026 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
54daaca7 1027 return -ETIMEDOUT;
4a71df50 1028 default:
e19e5be8
JW		 1029 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1030 PTR_ERR(irb), CCW_DEVID(cdev));
847a50fd
CO		 1031 QETH_CARD_TEXT(card, 2, "ckirberr");
1032 QETH_CARD_TEXT(card, 2, " rc???");
54daaca7 1033 return PTR_ERR(irb);
4a71df50 1034 }
4a71df50
FB		 1035}
1036
1037static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1038 struct irb *irb)
1039{
1040 int rc;
1041 int cstat, dstat;
db71bbbd 1042 struct qeth_cmd_buffer *iob = NULL;
8d908eb0 1043 struct ccwgroup_device *gdev;
4a71df50
FB		 1044 struct qeth_channel *channel;
1045 struct qeth_card *card;
4a71df50 1046
8d908eb0
JW		 1047 /* while we hold the ccwdev lock, this stays valid: */
1048 gdev = dev_get_drvdata(&cdev->dev);
1049 card = dev_get_drvdata(&gdev->dev);
4a71df50
FB		 1050 if (!card)
1051 return;
1052
847a50fd
CO		 1053 QETH_CARD_TEXT(card, 5, "irq");
1054
4a71df50
FB		 1055 if (card->read.ccwdev == cdev) {
1056 channel = &card->read;
847a50fd 1057 QETH_CARD_TEXT(card, 5, "read");
4a71df50
FB		 1058 } else if (card->write.ccwdev == cdev) {
1059 channel = &card->write;
847a50fd 1060 QETH_CARD_TEXT(card, 5, "write");
4a71df50
FB		 1061 } else {
1062 channel = &card->data;
847a50fd 1063 QETH_CARD_TEXT(card, 5, "data");
4a71df50 1064 }
db71bbbd
JW		 1065
1066 if (qeth_intparm_is_iob(intparm))
1067 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1068
2066e1db 1069 rc = qeth_check_irb_error(card, cdev, irb);
54daaca7 1070 if (rc) {
db71bbbd
JW		 1071 /* IO was terminated, free its resources. */
1072 if (iob)
54daaca7 1073 qeth_cancel_cmd(iob, rc);
db71bbbd
JW		 1074 atomic_set(&channel->irq_pending, 0);
1075 wake_up(&card->wait_q);
1076 return;
1077 }
1078
4a71df50
FB		 1079 atomic_set(&channel->irq_pending, 0);
1080
23d805b6 1081 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
4a71df50
FB		 1082 channel->state = CH_STATE_STOPPED;
1083
23d805b6 1084 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
4a71df50
FB		 1085 channel->state = CH_STATE_HALTED;
1086
4a71df50 1087 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
847a50fd 1088 QETH_CARD_TEXT(card, 6, "clrchpar");
4a71df50
FB		 1089 /* we don't have to handle this further */
1090 intparm = 0;
1091 }
1092 if (intparm == QETH_HALT_CHANNEL_PARM) {
847a50fd 1093 QETH_CARD_TEXT(card, 6, "hltchpar");
4a71df50
FB		 1094 /* we don't have to handle this further */
1095 intparm = 0;
1096 }
db71bbbd
JW		 1097
1098 cstat = irb->scsw.cmd.cstat;
1099 dstat = irb->scsw.cmd.dstat;
1100
4a71df50
FB		 1101 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1102 (dstat & DEV_STAT_UNIT_CHECK) ||
1103 (cstat)) {
1104 if (irb->esw.esw0.erw.cons) {
74eacdb9
FB		 1105 dev_warn(&channel->ccwdev->dev,
1106 "The qeth device driver failed to recover "
1107 "an error on the device\n");
e19e5be8
JW		 1108 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1109 CCW_DEVID(channel->ccwdev), cstat,
1110 dstat);
4a71df50
FB		 1111 print_hex_dump(KERN_WARNING, "qeth: irb ",
1112 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1113 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1114 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1115 }
2066e1db 1116
8d908eb0 1117 rc = qeth_get_problem(card, cdev, irb);
4a71df50 1118 if (rc) {
a6c3d939 1119 card->read_or_write_problem = 1;
5065b2dd 1120 if (iob)
54daaca7 1121 qeth_cancel_cmd(iob, rc);
28a7e4c9 1122 qeth_clear_ipacmd_list(card);
4a71df50
FB		 1123 qeth_schedule_recovery(card);
1124 goto out;
1125 }
1126 }
1127
db71bbbd 1128 if (iob && iob->callback)
fcda7f73 1129 iob->callback(card, iob);
4a71df50 1130
4a71df50
FB		 1131out:
1132 wake_up(&card->wait_q);
1133 return;
1134}
1135
b3332930 1136static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
0da9581d 1137 struct qeth_qdio_out_buffer *buf,
b3332930 1138 enum iucv_tx_notify notification)
4a71df50 1139{
4a71df50
FB		 1140 struct sk_buff *skb;
1141
dc149e37 1142 skb_queue_walk(&buf->skb_list, skb) {
b3332930
FB		 1143 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1144 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
6a3123d0
JW		 1145 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1146 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
b3332930 1147 }
b3332930
FB		 1148}
1149
1150static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1151{
104b4859
JW		 1152 struct sk_buff *skb;
1153
72861ae7 1154 /* release may never happen from within CQ tasklet scope */
18af5c17 1155 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
4a71df50 1156
6a3123d0
JW		 1157 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1158 qeth_notify_skbs(buf->q, buf, TX_NOTIFY_GENERALERROR);
1159
104b4859
JW		 1160 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL)
1161 consume_skb(skb);
b3332930
FB		 1162}
1163
1164static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
3b346c18 1165 struct qeth_qdio_out_buffer *buf)
b3332930
FB		 1166{
1167 int i;
1168
1169 /* is PCI flag set on buffer? */
1170 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1171 atomic_dec(&queue->set_pci_flags_count);
1172
3b346c18
JW		 1173 qeth_release_skbs(buf);
1174
4e26c5fe 1175 for (i = 0; i < queue->max_elements; ++i) {
683d718a
FB		 1176 if (buf->buffer->element[i].addr && buf->is_header[i])
1177 kmem_cache_free(qeth_core_header_cache,
1178 buf->buffer->element[i].addr);
1179 buf->is_header[i] = 0;
4a71df50 1180 }
3b346c18 1181
4e26c5fe 1182 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
4a71df50 1183 buf->next_element_to_fill = 0;
3b346c18 1184 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
0da9581d
EL		 1185}
1186
41c47da3 1187static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
0da9581d
EL		 1188{
1189 int j;
1190
1191 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1192 if (!q->bufs[j])
1193 continue;
72861ae7 1194 qeth_cleanup_handled_pending(q, j, 1);
3b346c18 1195 qeth_clear_output_buffer(q, q->bufs[j]);
0da9581d
EL		 1196 if (free) {
1197 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1198 q->bufs[j] = NULL;
1199 }
1200 }
4a71df50
FB		 1201}
1202
41c47da3 1203void qeth_drain_output_queues(struct qeth_card *card)
4a71df50 1204{
0da9581d 1205 int i;
4a71df50 1206
847a50fd 1207 QETH_CARD_TEXT(card, 2, "clearqdbf");
4a71df50 1208 /* clear outbound buffers to free skbs */
0da9581d 1209 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3
JW		 1210 if (card->qdio.out_qs[i])
1211 qeth_drain_output_queue(card->qdio.out_qs[i], false);
0da9581d 1212 }
4a71df50 1213}
41c47da3 1214EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
4a71df50
FB		 1215
1216static void qeth_free_buffer_pool(struct qeth_card *card)
1217{
1218 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1219 int i = 0;
4a71df50
FB		 1220 list_for_each_entry_safe(pool_entry, tmp,
1221 &card->qdio.init_pool.entry_list, init_list){
1222 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1223 free_page((unsigned long)pool_entry->elements[i]);
1224 list_del(&pool_entry->init_list);
1225 kfree(pool_entry);
1226 }
1227}
1228
4a71df50
FB		 1229static void qeth_clean_channel(struct qeth_channel *channel)
1230{
121ca39a 1231 struct ccw_device *cdev = channel->ccwdev;
4a71df50
FB		 1232 int cnt;
1233
d11ba0c4 1234 QETH_DBF_TEXT(SETUP, 2, "freech");
121ca39a
JW		 1235
1236 spin_lock_irq(get_ccwdev_lock(cdev));
1237 cdev->handler = NULL;
1238 spin_unlock_irq(get_ccwdev_lock(cdev));
1239
4a71df50
FB		 1240 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1241 kfree(channel->iob[cnt].data);
f15cdaf2 1242 kfree(channel->ccw);
4a71df50
FB		 1243}
1244
121ca39a
JW		 1245static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers)
1246{
1247 struct ccw_device *cdev = channel->ccwdev;
1248 int cnt;
1249
1250 QETH_DBF_TEXT(SETUP, 2, "setupch");
1251
1252 channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
1253 if (!channel->ccw)
1254 return -ENOMEM;
1255 channel->state = CH_STATE_DOWN;
1256 atomic_set(&channel->irq_pending, 0);
1257 init_waitqueue_head(&channel->wait_q);
1258
1259 spin_lock_irq(get_ccwdev_lock(cdev));
1260 cdev->handler = qeth_irq;
1261 spin_unlock_irq(get_ccwdev_lock(cdev));
1262
1263 if (!alloc_buffers)
1264 return 0;
1265
1266 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
500abbf0
JW		 1267 channel->iob[cnt].data = kmalloc(QETH_BUFSIZE,
1268 GFP_KERNEL | GFP_DMA);
121ca39a
JW		 1269 if (channel->iob[cnt].data == NULL)
1270 break;
1271 channel->iob[cnt].state = BUF_STATE_FREE;
1272 channel->iob[cnt].channel = channel;
121ca39a
JW		 1273 }
1274 if (cnt < QETH_CMD_BUFFER_NO) {
1275 qeth_clean_channel(channel);
1276 return -ENOMEM;
1277 }
1278 channel->io_buf_no = 0;
1279 spin_lock_init(&channel->iob_lock);
1280
1281 return 0;
1282}
1283
bd966839 1284static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
725b9c04 1285{
73dc2daf 1286 unsigned int count = single ? 1 : card->dev->num_tx_queues;
bd966839 1287 int rc;
725b9c04 1288
73dc2daf 1289 rtnl_lock();
bd966839 1290 rc = netif_set_real_num_tx_queues(card->dev, count);
73dc2daf 1291 rtnl_unlock();
725b9c04 1292
bd966839
JW		 1293 if (rc)
1294 return rc;
1295
73dc2daf 1296 if (card->qdio.no_out_queues == count)
bd966839 1297 return 0;
725b9c04 1298
73dc2daf 1299 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
41c47da3 1300 qeth_free_qdio_queues(card);
73dc2daf
JW		 1301
1302 if (count == 1)
1303 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1304
1305 card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE;
1306 card->qdio.no_out_queues = count;
bd966839 1307 return 0;
725b9c04
SO		 1308}
1309
a4cdc9ba 1310static int qeth_update_from_chp_desc(struct qeth_card *card)
4a71df50 1311{
4a71df50 1312 struct ccw_device *ccwdev;
ded27d8d 1313 struct channel_path_desc_fmt0 *chp_dsc;
bd966839 1314 int rc = 0;
4a71df50 1315
57a688aa 1316 QETH_CARD_TEXT(card, 2, "chp_desc");
4a71df50
FB		 1317
1318 ccwdev = card->data.ccwdev;
725b9c04
SO		 1319 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1320 if (!chp_dsc)
a4cdc9ba 1321 return -ENOMEM;
725b9c04
SO		 1322
1323 card->info.func_level = 0x4100 + chp_dsc->desc;
725b9c04 1324
73dc2daf
JW		 1325 if (IS_OSD(card) || IS_OSX(card))
1326 /* CHPP field bit 6 == 1 -> single queue */
bd966839 1327 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
73dc2daf 1328
725b9c04 1329 kfree(chp_dsc);
57a688aa
JW		 1330 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1331 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
bd966839 1332 return rc;
4a71df50
FB		 1333}
1334
1335static void qeth_init_qdio_info(struct qeth_card *card)
1336{
57a688aa 1337 QETH_CARD_TEXT(card, 4, "intqdinf");
4a71df50 1338 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
95f4d8b7
JW		 1339 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1340 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
95f4d8b7 1341
4a71df50 1342 /* inbound */
ed2e93ef 1343 card->qdio.no_in_queues = 1;
4a71df50 1344 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
379ac99e 1345 if (IS_IQD(card))
dcf4ae2d
FB		 1346 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1347 else
1348 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
4a71df50
FB		 1349 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1350 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1351 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1352}
1353
95f4d8b7 1354static void qeth_set_initial_options(struct qeth_card *card)
4a71df50
FB		 1355{
1356 card->options.route4.type = NO_ROUTER;
1357 card->options.route6.type = NO_ROUTER;
4a71df50 1358 card->options.rx_sg_cb = QETH_RX_SG_CB;
d64ecc22 1359 card->options.isolation = ISOLATION_MODE_NONE;
0da9581d 1360 card->options.cq = QETH_CQ_DISABLED;
4fda3354 1361 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
4a71df50
FB		 1362}
1363
1364static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1365{
1366 unsigned long flags;
1367 int rc = 0;
1368
1369 spin_lock_irqsave(&card->thread_mask_lock, flags);
847a50fd 1370 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
4a71df50
FB		 1371 (u8) card->thread_start_mask,
1372 (u8) card->thread_allowed_mask,
1373 (u8) card->thread_running_mask);
1374 rc = (card->thread_start_mask & thread);
1375 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1376 return rc;
1377}
1378
1379static void qeth_start_kernel_thread(struct work_struct *work)
1380{
3f36b890 1381 struct task_struct *ts;
4a71df50
FB		 1382 struct qeth_card *card = container_of(work, struct qeth_card,
1383 kernel_thread_starter);
847a50fd 1384 QETH_CARD_TEXT(card , 2, "strthrd");
4a71df50
FB		 1385
1386 if (card->read.state != CH_STATE_UP &&
1387 card->write.state != CH_STATE_UP)
1388 return;
3f36b890 1389 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
c041f2d4 1390 ts = kthread_run(card->discipline->recover, (void *)card,
4a71df50 1391 "qeth_recover");
3f36b890
FB		 1392 if (IS_ERR(ts)) {
1393 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1394 qeth_clear_thread_running_bit(card,
1395 QETH_RECOVER_THREAD);
1396 }
1397 }
4a71df50
FB		 1398}
1399
bca51650 1400static void qeth_buffer_reclaim_work(struct work_struct *);
95f4d8b7 1401static void qeth_setup_card(struct qeth_card *card)
4a71df50 1402{
57a688aa 1403 QETH_CARD_TEXT(card, 2, "setupcrd");
4a71df50 1404
95f4d8b7 1405 card->info.type = CARD_RDEV(card)->id.driver_info;
4a71df50 1406 card->state = CARD_STATE_DOWN;
4a71df50 1407 spin_lock_init(&card->lock);
4a71df50 1408 spin_lock_init(&card->thread_mask_lock);
c4949f07 1409 mutex_init(&card->conf_mutex);
9dc48ccc 1410 mutex_init(&card->discipline_mutex);
4a71df50 1411 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
4a71df50
FB		 1412 INIT_LIST_HEAD(&card->cmd_waiter_list);
1413 init_waitqueue_head(&card->wait_q);
95f4d8b7 1414 qeth_set_initial_options(card);
4a71df50
FB		 1415 /* IP address takeover */
1416 INIT_LIST_HEAD(&card->ipato.entries);
4a71df50 1417 qeth_init_qdio_info(card);
b3332930 1418 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
0f54761d 1419 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
4a71df50
FB		 1420}
1421
6bcac508
MS		 1422static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1423{
1424 struct qeth_card *card = container_of(slr, struct qeth_card,
1425 qeth_service_level);
0d788c7d
KDW		 1426 if (card->info.mcl_level[0])
1427 seq_printf(m, "qeth: %s firmware level %s\n",
1428 CARD_BUS_ID(card), card->info.mcl_level);
6bcac508
MS		 1429}
1430
121ca39a 1431static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
4a71df50
FB		 1432{
1433 struct qeth_card *card;
1434
d11ba0c4 1435 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
f15cdaf2 1436 card = kzalloc(sizeof(*card), GFP_KERNEL);
4a71df50 1437 if (!card)
76b11f8e 1438 goto out;
d11ba0c4 1439 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
121ca39a
JW		 1440
1441 card->gdev = gdev;
a2eb0ad5 1442 dev_set_drvdata(&gdev->dev, card);
121ca39a
JW		 1443 CARD_RDEV(card) = gdev->cdev[0];
1444 CARD_WDEV(card) = gdev->cdev[1];
1445 CARD_DDEV(card) = gdev->cdev[2];
c0a2e4d1 1446
7686e4b6
JW		 1447 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1448 dev_name(&gdev->dev));
c0a2e4d1
JW		 1449 if (!card->event_wq)
1450 goto out_wq;
d9b9f40b
JW		 1451
1452 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1453 if (!card->read_cmd)
1454 goto out_read_cmd;
1455 if (qeth_setup_channel(&card->read, false))
1456 goto out_read;
24142fd8 1457 if (qeth_setup_channel(&card->write, true))
d9b9f40b 1458 goto out_write;
24142fd8
JW		 1459 if (qeth_setup_channel(&card->data, false))
1460 goto out_data;
6bcac508
MS		 1461 card->qeth_service_level.seq_print = qeth_core_sl_print;
1462 register_service_level(&card->qeth_service_level);
4a71df50 1463 return card;
76b11f8e 1464
24142fd8
JW		 1465out_data:
1466 qeth_clean_channel(&card->write);
d9b9f40b 1467out_write:
76b11f8e 1468 qeth_clean_channel(&card->read);
d9b9f40b
JW		 1469out_read:
1470 qeth_release_buffer(card->read_cmd);
1471out_read_cmd:
c0a2e4d1
JW		 1472 destroy_workqueue(card->event_wq);
1473out_wq:
a2eb0ad5 1474 dev_set_drvdata(&gdev->dev, NULL);
76b11f8e
UB		 1475 kfree(card);
1476out:
1477 return NULL;
4a71df50
FB		 1478}
1479
8d908eb0
JW		 1480static int qeth_clear_channel(struct qeth_card *card,
1481 struct qeth_channel *channel)
4a71df50 1482{
4a71df50
FB		 1483 int rc;
1484
847a50fd 1485 QETH_CARD_TEXT(card, 3, "clearch");
ed47155b 1486 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1487 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
ed47155b 1488 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1489
1490 if (rc)
1491 return rc;
1492 rc = wait_event_interruptible_timeout(card->wait_q,
1493 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1494 if (rc == -ERESTARTSYS)
1495 return rc;
1496 if (channel->state != CH_STATE_STOPPED)
1497 return -ETIME;
1498 channel->state = CH_STATE_DOWN;
1499 return 0;
1500}
1501
8d908eb0
JW		 1502static int qeth_halt_channel(struct qeth_card *card,
1503 struct qeth_channel *channel)
4a71df50 1504{
4a71df50
FB		 1505 int rc;
1506
847a50fd 1507 QETH_CARD_TEXT(card, 3, "haltch");
ed47155b 1508 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1509 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
ed47155b 1510 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1511
1512 if (rc)
1513 return rc;
1514 rc = wait_event_interruptible_timeout(card->wait_q,
1515 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1516 if (rc == -ERESTARTSYS)
1517 return rc;
1518 if (channel->state != CH_STATE_HALTED)
1519 return -ETIME;
1520 return 0;
1521}
1522
1523static int qeth_halt_channels(struct qeth_card *card)
1524{
1525 int rc1 = 0, rc2 = 0, rc3 = 0;
1526
847a50fd 1527 QETH_CARD_TEXT(card, 3, "haltchs");
8d908eb0
JW		 1528 rc1 = qeth_halt_channel(card, &card->read);
1529 rc2 = qeth_halt_channel(card, &card->write);
1530 rc3 = qeth_halt_channel(card, &card->data);
4a71df50
FB		 1531 if (rc1)
1532 return rc1;
1533 if (rc2)
1534 return rc2;
1535 return rc3;
1536}
1537
1538static int qeth_clear_channels(struct qeth_card *card)
1539{
1540 int rc1 = 0, rc2 = 0, rc3 = 0;
1541
847a50fd 1542 QETH_CARD_TEXT(card, 3, "clearchs");
8d908eb0
JW		 1543 rc1 = qeth_clear_channel(card, &card->read);
1544 rc2 = qeth_clear_channel(card, &card->write);
1545 rc3 = qeth_clear_channel(card, &card->data);
4a71df50
FB		 1546 if (rc1)
1547 return rc1;
1548 if (rc2)
1549 return rc2;
1550 return rc3;
1551}
1552
1553static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1554{
1555 int rc = 0;
1556
847a50fd 1557 QETH_CARD_TEXT(card, 3, "clhacrd");
4a71df50
FB		 1558
1559 if (halt)
1560 rc = qeth_halt_channels(card);
1561 if (rc)
1562 return rc;
1563 return qeth_clear_channels(card);
1564}
1565
1566int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1567{
1568 int rc = 0;
1569
847a50fd 1570 QETH_CARD_TEXT(card, 3, "qdioclr");
4a71df50
FB		 1571 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1572 QETH_QDIO_CLEANING)) {
1573 case QETH_QDIO_ESTABLISHED:
379ac99e 1574 if (IS_IQD(card))
cc961d40 1575 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1576 QDIO_FLAG_CLEANUP_USING_HALT);
1577 else
cc961d40 1578 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1579 QDIO_FLAG_CLEANUP_USING_CLEAR);
1580 if (rc)
847a50fd 1581 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
4a71df50
FB		 1582 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1583 break;
1584 case QETH_QDIO_CLEANING:
1585 return rc;
1586 default:
1587 break;
1588 }
1589 rc = qeth_clear_halt_card(card, use_halt);
1590 if (rc)
847a50fd 1591 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
4a71df50
FB		 1592 card->state = CARD_STATE_DOWN;
1593 return rc;
1594}
1595EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1596
615dff22
JW		 1597static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1598{
1599 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1600 struct diag26c_vnic_resp *response = NULL;
1601 struct diag26c_vnic_req *request = NULL;
1602 struct ccw_dev_id id;
1603 char userid[80];
1604 int rc = 0;
1605
57a688aa 1606 QETH_CARD_TEXT(card, 2, "vmlayer");
615dff22
JW		 1607
1608 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1609 if (rc)
1610 goto out;
1611
1612 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1613 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1614 if (!request || !response) {
1615 rc = -ENOMEM;
1616 goto out;
1617 }
1618
1619 ccw_device_get_id(CARD_RDEV(card), &id);
1620 request->resp_buf_len = sizeof(*response);
1621 request->resp_version = DIAG26C_VERSION6_VM65918;
1622 request->req_format = DIAG26C_VNIC_INFO;
1623 ASCEBC(userid, 8);
1624 memcpy(&request->sys_name, userid, 8);
1625 request->devno = id.devno;
1626
1627 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1628 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1629 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1630 if (rc)
1631 goto out;
1632 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1633
1634 if (request->resp_buf_len < sizeof(*response) ||
1635 response->version != request->resp_version) {
1636 rc = -EIO;
1637 goto out;
1638 }
1639
1640 if (response->protocol == VNIC_INFO_PROT_L2)
1641 disc = QETH_DISCIPLINE_LAYER2;
1642 else if (response->protocol == VNIC_INFO_PROT_L3)
1643 disc = QETH_DISCIPLINE_LAYER3;
1644
1645out:
1646 kfree(response);
1647 kfree(request);
1648 if (rc)
57a688aa 1649 QETH_CARD_TEXT_(card, 2, "err%x", rc);
615dff22
JW		 1650 return disc;
1651}
1652
c70eb09d
JW		 1653/* Determine whether the device requires a specific layer discipline */
1654static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1655{
615dff22
JW		 1656 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1657
379ac99e 1658 if (IS_OSM(card) || IS_OSN(card))
615dff22 1659 disc = QETH_DISCIPLINE_LAYER2;
379ac99e
JW		 1660 else if (IS_VM_NIC(card))
1661 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1662 qeth_vm_detect_layer(card);
615dff22
JW		 1663
1664 switch (disc) {
1665 case QETH_DISCIPLINE_LAYER2:
57a688aa 1666 QETH_CARD_TEXT(card, 3, "force l2");
615dff22
JW		 1667 break;
1668 case QETH_DISCIPLINE_LAYER3:
57a688aa 1669 QETH_CARD_TEXT(card, 3, "force l3");
615dff22
JW		 1670 break;
1671 default:
57a688aa 1672 QETH_CARD_TEXT(card, 3, "force no");
c70eb09d
JW		 1673 }
1674
615dff22 1675 return disc;
c70eb09d
JW		 1676}
1677
09ac887f 1678static void qeth_set_blkt_defaults(struct qeth_card *card)
a60389ab 1679{
57a688aa 1680 QETH_CARD_TEXT(card, 2, "cfgblkt");
a60389ab 1681
09ac887f 1682 if (card->info.use_v1_blkt) {
a60389ab
EL		 1683 card->info.blkt.time_total = 0;
1684 card->info.blkt.inter_packet = 0;
1685 card->info.blkt.inter_packet_jumbo = 0;
a0c98523
UB		 1686 } else {
1687 card->info.blkt.time_total = 250;
1688 card->info.blkt.inter_packet = 5;
1689 card->info.blkt.inter_packet_jumbo = 15;
a60389ab 1690 }
4a71df50
FB		 1691}
1692
1693static void qeth_init_tokens(struct qeth_card *card)
1694{
1695 card->token.issuer_rm_w = 0x00010103UL;
1696 card->token.cm_filter_w = 0x00010108UL;
1697 card->token.cm_connection_w = 0x0001010aUL;
1698 card->token.ulp_filter_w = 0x0001010bUL;
1699 card->token.ulp_connection_w = 0x0001010dUL;
1700}
1701
1702static void qeth_init_func_level(struct qeth_card *card)
1703{
5113fec0
UB		 1704 switch (card->info.type) {
1705 case QETH_CARD_TYPE_IQD:
6298263a 1706 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
5113fec0
UB		 1707 break;
1708 case QETH_CARD_TYPE_OSD:
0132951e 1709 case QETH_CARD_TYPE_OSN:
5113fec0
UB		 1710 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1711 break;
1712 default:
1713 break;
4a71df50
FB		 1714 }
1715}
1716
48ce6f89
JW		 1717static void qeth_idx_finalize_cmd(struct qeth_card *card,
1718 struct qeth_cmd_buffer *iob,
1719 unsigned int length)
1720{
48ce6f89
JW		 1721 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1722 QETH_SEQ_NO_LENGTH);
1723 if (iob->channel == &card->write)
1724 card->seqno.trans_hdr++;
1725}
1726
4a71df50
FB		 1727static int qeth_peer_func_level(int level)
1728{
1729 if ((level & 0xff) == 8)
1730 return (level & 0xff) + 0x400;
1731 if (((level >> 8) & 3) == 1)
1732 return (level & 0xff) + 0x200;
1733 return level;
1734}
1735
48ce6f89
JW		 1736static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1737 struct qeth_cmd_buffer *iob,
1738 unsigned int length)
4a71df50 1739{
f3b783b1
JW		 1740 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, length,
1741 iob->data);
48ce6f89 1742 qeth_idx_finalize_cmd(card, iob, length);
4a71df50 1743
4a71df50
FB		 1744 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1745 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1746 card->seqno.pdu_hdr++;
1747 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1748 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
48ce6f89
JW		 1749
1750 iob->reply->seqno = QETH_IDX_COMMAND_SEQNO;
1751 iob->callback = qeth_release_buffer_cb;
4a71df50 1752}
4a71df50 1753
1273a800
JW		 1754static struct qeth_cmd_buffer *qeth_mpc_get_cmd_buffer(struct qeth_card *card)
1755{
1756 struct qeth_cmd_buffer *iob;
1757
1758 iob = qeth_get_buffer(&card->write);
1759 if (iob)
1760 iob->finalize = qeth_mpc_finalize_cmd;
1761 return iob;
1762}
1763
efbbc1d5
EC		 1764/**
1765 * qeth_send_control_data() - send control command to the card
1766 * @card: qeth_card structure pointer
1767 * @len: size of the command buffer
1768 * @iob: qeth_cmd_buffer pointer
1769 * @reply_cb: callback function pointer
1770 * @cb_card: pointer to the qeth_card structure
1771 * @cb_reply: pointer to the qeth_reply structure
1772 * @cb_cmd: pointer to the original iob for non-IPA
1773 * commands, or to the qeth_ipa_cmd structure
1774 * for the IPA commands.
1775 * @reply_param: private pointer passed to the callback
1776 *
efbbc1d5
EC		 1777 * Callback function gets called one or more times, with cb_cmd
1778 * pointing to the response returned by the hardware. Callback
742d4d40
JW		 1779 * function must return
1780 * > 0 if more reply blocks are expected,
1781 * 0 if the last or only reply block is received, and
1782 * < 0 on error.
1783 * Callback function can get the value of the reply_param pointer from the
efbbc1d5
EC		 1784 * field 'param' of the structure qeth_reply.
1785 */
1786
84dbea46
JW		 1787static int qeth_send_control_data(struct qeth_card *card, int len,
1788 struct qeth_cmd_buffer *iob,
1789 int (*reply_cb)(struct qeth_card *cb_card,
1790 struct qeth_reply *cb_reply,
1791 unsigned long cb_cmd),
1792 void *reply_param)
4a71df50 1793{
750b1625 1794 struct qeth_channel *channel = iob->channel;
782e4a79 1795 long timeout = iob->timeout;
4a71df50 1796 int rc;
4a71df50 1797 struct qeth_reply *reply = NULL;
4a71df50 1798
847a50fd 1799 QETH_CARD_TEXT(card, 2, "sendctl");
4a71df50
FB		 1800
1801 reply = qeth_alloc_reply(card);
1802 if (!reply) {
fcda7f73 1803 qeth_release_buffer(iob);
4a71df50
FB		 1804 return -ENOMEM;
1805 }
1806 reply->callback = reply_cb;
1807 reply->param = reply_param;
d22ffb5a 1808
54daaca7
JW		 1809 /* pairs with qeth_release_buffer(): */
1810 qeth_get_reply(reply);
1811 iob->reply = reply;
1812
782e4a79
JW		 1813 timeout = wait_event_interruptible_timeout(card->wait_q,
1814 qeth_trylock_channel(channel),
1815 timeout);
1816 if (timeout <= 0) {
1817 qeth_put_reply(reply);
fcda7f73 1818 qeth_release_buffer(iob);
782e4a79
JW		 1819 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1820 }
4a71df50 1821
2066e1db
JW		 1822 if (iob->finalize)
1823 iob->finalize(card, iob, len);
48ce6f89 1824 QETH_DBF_HEX(CTRL, 2, iob->data, min(len, QETH_DBF_CTRL_LEN));
d22ffb5a 1825
0951c6ba 1826 qeth_enqueue_reply(card, reply);
1c5b2216 1827
847a50fd 1828 QETH_CARD_TEXT(card, 6, "noirqpnd");
ed47155b 1829 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
40554895 1830 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
782e4a79 1831 (addr_t) iob, 0, 0, timeout);
ed47155b 1832 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1833 if (rc) {
e19e5be8
JW		 1834 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1835 CARD_DEVID(card), rc);
847a50fd 1836 QETH_CARD_TEXT_(card, 2, " err%d", rc);
0951c6ba 1837 qeth_dequeue_reply(card, reply);
4a71df50 1838 qeth_put_reply(reply);
fcda7f73 1839 qeth_release_buffer(iob);
750b1625 1840 atomic_set(&channel->irq_pending, 0);
4a71df50
FB		 1841 wake_up(&card->wait_q);
1842 return rc;
1843 }
5b54e16f 1844
782e4a79
JW		 1845 timeout = wait_for_completion_interruptible_timeout(&reply->received,
1846 timeout);
1847 if (timeout <= 0)
1848 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
5b54e16f 1849
0951c6ba 1850 qeth_dequeue_reply(card, reply);
782e4a79
JW		 1851 if (!rc)
1852 rc = reply->rc;
5b54e16f
FB		 1853 qeth_put_reply(reply);
1854 return rc;
4a71df50 1855}
4a71df50 1856
2066e1db
JW		 1857static void qeth_read_conf_data_cb(struct qeth_card *card,
1858 struct qeth_cmd_buffer *iob)
1859{
1860 unsigned char *prcd = iob->data;
1861
1862 QETH_CARD_TEXT(card, 2, "cfgunit");
1863 card->info.chpid = prcd[30];
1864 card->info.unit_addr2 = prcd[31];
1865 card->info.cula = prcd[63];
1866 card->info.is_vm_nic = ((prcd[0x10] == _ascebc['V']) &&
1867 (prcd[0x11] == _ascebc['M']));
1868 card->info.use_v1_blkt = prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1869 prcd[76] >= 0xF1 && prcd[76] <= 0xF4;
1870
1871 qeth_notify_reply(iob->reply, 0);
1872 qeth_release_buffer(iob);
1873}
1874
1875static int qeth_read_conf_data(struct qeth_card *card)
1876{
1877 struct qeth_channel *channel = &card->data;
1878 struct qeth_cmd_buffer *iob;
1879 struct ciw *ciw;
1880
1881 /* scan for RCD command in extended SenseID data */
1882 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1883 if (!ciw || ciw->cmd == 0)
1884 return -EOPNOTSUPP;
1885
1886 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1887 if (!iob)
1888 return -ENOMEM;
1889
1890 iob->callback = qeth_read_conf_data_cb;
1891 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1892 iob->data);
1893
1894 return qeth_send_control_data(card, iob->length, iob, NULL, NULL);
1895}
1896
2e873d10
JW		 1897static int qeth_idx_check_activate_response(struct qeth_card *card,
1898 struct qeth_channel *channel,
1899 struct qeth_cmd_buffer *iob)
1900{
1901 int rc;
1902
1903 rc = qeth_check_idx_response(card, iob->data);
1904 if (rc)
1905 return rc;
1906
1907 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1908 return 0;
1909
1910 /* negative reply: */
57a688aa
JW		 1911 QETH_CARD_TEXT_(card, 2, "idxneg%c",
1912 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2e873d10
JW		 1913
1914 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1915 case QETH_IDX_ACT_ERR_EXCL:
1916 dev_err(&channel->ccwdev->dev,
1917 "The adapter is used exclusively by another host\n");
1918 return -EBUSY;
1919 case QETH_IDX_ACT_ERR_AUTH:
1920 case QETH_IDX_ACT_ERR_AUTH_USER:
1921 dev_err(&channel->ccwdev->dev,
1922 "Setting the device online failed because of insufficient authorization\n");
1923 return -EPERM;
1924 default:
1925 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1926 CCW_DEVID(channel->ccwdev));
1927 return -EIO;
1928 }
1929}
1930
f3b783b1
JW		 1931static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
1932 struct qeth_cmd_buffer *iob)
2e873d10 1933{
fcda7f73 1934 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 1935 u16 peer_level;
1936 int rc;
1937
57a688aa 1938 QETH_CARD_TEXT(card, 2, "idxrdcb");
2e873d10
JW		 1939
1940 rc = qeth_idx_check_activate_response(card, channel, iob);
1941 if (rc)
1942 goto out;
1943
1944 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1945 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1946 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1947 CCW_DEVID(channel->ccwdev),
1948 card->info.func_level, peer_level);
1949 rc = -EINVAL;
1950 goto out;
1951 }
1952
1953 memcpy(&card->token.issuer_rm_r,
1954 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1955 QETH_MPC_TOKEN_LENGTH);
1956 memcpy(&card->info.mcl_level[0],
1957 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1958
1959out:
1960 qeth_notify_reply(iob->reply, rc);
fcda7f73 1961 qeth_release_buffer(iob);
2e873d10
JW		 1962}
1963
f3b783b1
JW		 1964static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
1965 struct qeth_cmd_buffer *iob)
2e873d10 1966{
fcda7f73 1967 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 1968 u16 peer_level;
1969 int rc;
1970
57a688aa 1971 QETH_CARD_TEXT(card, 2, "idxwrcb");
2e873d10
JW		 1972
1973 rc = qeth_idx_check_activate_response(card, channel, iob);
1974 if (rc)
1975 goto out;
1976
1977 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1978 if ((peer_level & ~0x0100) !=
1979 qeth_peer_func_level(card->info.func_level)) {
1980 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1981 CCW_DEVID(channel->ccwdev),
1982 card->info.func_level, peer_level);
1983 rc = -EINVAL;
1984 }
1985
1986out:
1987 qeth_notify_reply(iob->reply, rc);
fcda7f73 1988 qeth_release_buffer(iob);
2e873d10
JW		 1989}
1990
2e873d10
JW		 1991static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
1992 struct qeth_cmd_buffer *iob)
1993{
1994 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
1995 u8 port = ((u8)card->dev->dev_port) | 0x80;
f3b783b1 1996 struct ccw1 *ccw = __ccw_from_cmd(iob);
2e873d10
JW		 1997 struct ccw_dev_id dev_id;
1998
f3b783b1
JW		 1999 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2000 iob->data);
2001 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2e873d10
JW		 2002 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2003 iob->finalize = qeth_idx_finalize_cmd;
2e873d10
JW		 2004
2005 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2006 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2007 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2008 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2009 &card->info.func_level, 2);
2010 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
2011 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2012}
2013
2014static int qeth_idx_activate_read_channel(struct qeth_card *card)
2015{
2016 struct qeth_channel *channel = &card->read;
2017 struct qeth_cmd_buffer *iob;
2018 int rc;
2019
57a688aa 2020 QETH_CARD_TEXT(card, 2, "idxread");
2e873d10 2021
f3b783b1 2022 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2023 if (!iob)
2024 return -ENOMEM;
2025
2026 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2027 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2028 iob->callback = qeth_idx_activate_read_channel_cb;
2e873d10
JW		 2029
2030 rc = qeth_send_control_data(card, IDX_ACTIVATE_SIZE, iob, NULL, NULL);
2031 if (rc)
2032 return rc;
2033
2e873d10
JW		 2034 channel->state = CH_STATE_UP;
2035 return 0;
2036}
2037
2038static int qeth_idx_activate_write_channel(struct qeth_card *card)
2039{
2040 struct qeth_channel *channel = &card->write;
2041 struct qeth_cmd_buffer *iob;
2042 int rc;
2043
57a688aa 2044 QETH_CARD_TEXT(card, 2, "idxwrite");
2e873d10 2045
f3b783b1 2046 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2047 if (!iob)
2048 return -ENOMEM;
2049
2050 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2051 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2052 iob->callback = qeth_idx_activate_write_channel_cb;
2e873d10
JW		 2053
2054 rc = qeth_send_control_data(card, IDX_ACTIVATE_SIZE, iob, NULL, NULL);
2055 if (rc)
2056 return rc;
2057
2e873d10
JW		 2058 channel->state = CH_STATE_UP;
2059 return 0;
2060}
2061
4a71df50
FB		 2062static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2063 unsigned long data)
2064{
2065 struct qeth_cmd_buffer *iob;
2066
57a688aa 2067 QETH_CARD_TEXT(card, 2, "cmenblcb");
4a71df50
FB		 2068
2069 iob = (struct qeth_cmd_buffer *) data;
2070 memcpy(&card->token.cm_filter_r,
2071 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2072 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2073 return 0;
2074}
2075
2076static int qeth_cm_enable(struct qeth_card *card)
2077{
2078 int rc;
2079 struct qeth_cmd_buffer *iob;
2080
57a688aa 2081 QETH_CARD_TEXT(card, 2, "cmenable");
4a71df50 2082
1273a800
JW		 2083 iob = qeth_mpc_get_cmd_buffer(card);
2084 if (!iob)
2085 return -ENOMEM;
48ce6f89 2086
1273a800 2087 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
4a71df50
FB		 2088 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2089 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2090 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2091 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2092
2093 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2094 qeth_cm_enable_cb, NULL);
2095 return rc;
2096}
2097
2098static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2099 unsigned long data)
2100{
4a71df50
FB		 2101 struct qeth_cmd_buffer *iob;
2102
57a688aa 2103 QETH_CARD_TEXT(card, 2, "cmsetpcb");
4a71df50
FB		 2104
2105 iob = (struct qeth_cmd_buffer *) data;
2106 memcpy(&card->token.cm_connection_r,
2107 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2108 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2109 return 0;
2110}
2111
2112static int qeth_cm_setup(struct qeth_card *card)
2113{
2114 int rc;
2115 struct qeth_cmd_buffer *iob;
2116
57a688aa 2117 QETH_CARD_TEXT(card, 2, "cmsetup");
4a71df50 2118
1273a800
JW		 2119 iob = qeth_mpc_get_cmd_buffer(card);
2120 if (!iob)
2121 return -ENOMEM;
48ce6f89 2122
1273a800 2123 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
4a71df50
FB		 2124 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2125 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2126 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2127 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2128 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2129 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2130 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2131 qeth_cm_setup_cb, NULL);
2132 return rc;
4a71df50
FB		 2133}
2134
8ce7a9e0 2135static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
4a71df50 2136{
8ce7a9e0
JW		 2137 struct net_device *dev = card->dev;
2138 unsigned int new_mtu;
2139
2140 if (!max_mtu) {
2141 /* IQD needs accurate max MTU to set up its RX buffers: */
2142 if (IS_IQD(card))
2143 return -EINVAL;
2144 /* tolerate quirky HW: */
2145 max_mtu = ETH_MAX_MTU;
2146 }
2147
2148 rtnl_lock();
2149 if (IS_IQD(card)) {
2150 /* move any device with default MTU to new max MTU: */
2151 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2152
2153 /* adjust RX buffer size to new max MTU: */
2154 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2155 if (dev->max_mtu && dev->max_mtu != max_mtu)
41c47da3 2156 qeth_free_qdio_queues(card);
8ce7a9e0
JW		 2157 } else {
2158 if (dev->mtu)
2159 new_mtu = dev->mtu;
2160 /* default MTUs for first setup: */
4fda3354 2161 else if (IS_LAYER2(card))
8ce7a9e0
JW		 2162 new_mtu = ETH_DATA_LEN;
2163 else
2164 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
4a71df50 2165 }
8ce7a9e0
JW		 2166
2167 dev->max_mtu = max_mtu;
2168 dev->mtu = min(new_mtu, max_mtu);
2169 rtnl_unlock();
2170 return 0;
4a71df50
FB		 2171}
2172
cef6ff22 2173static int qeth_get_mtu_outof_framesize(int framesize)
4a71df50
FB		 2174{
2175 switch (framesize) {
2176 case 0x4000:
2177 return 8192;
2178 case 0x6000:
2179 return 16384;
2180 case 0xa000:
2181 return 32768;
2182 case 0xffff:
2183 return 57344;
2184 default:
2185 return 0;
2186 }
2187}
2188
4a71df50
FB		 2189static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2190 unsigned long data)
2191{
4a71df50
FB		 2192 __u16 mtu, framesize;
2193 __u16 len;
2194 __u8 link_type;
2195 struct qeth_cmd_buffer *iob;
2196
57a688aa 2197 QETH_CARD_TEXT(card, 2, "ulpenacb");
4a71df50
FB		 2198
2199 iob = (struct qeth_cmd_buffer *) data;
2200 memcpy(&card->token.ulp_filter_r,
2201 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2202 QETH_MPC_TOKEN_LENGTH);
379ac99e 2203 if (IS_IQD(card)) {
4a71df50
FB		 2204 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2205 mtu = qeth_get_mtu_outof_framesize(framesize);
4a71df50 2206 } else {
8ce7a9e0 2207 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
4a71df50 2208 }
8ce7a9e0 2209 *(u16 *)reply->param = mtu;
4a71df50
FB		 2210
2211 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2212 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2213 memcpy(&link_type,
2214 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2215 card->info.link_type = link_type;
2216 } else
2217 card->info.link_type = 0;
57a688aa 2218 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
4a71df50
FB		 2219 return 0;
2220}
2221
73657a3e
JW		 2222static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2223{
2224 if (IS_OSN(card))
2225 return QETH_PROT_OSN2;
4fda3354 2226 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
73657a3e
JW		 2227}
2228
4a71df50
FB		 2229static int qeth_ulp_enable(struct qeth_card *card)
2230{
73657a3e 2231 u8 prot_type = qeth_mpc_select_prot_type(card);
4a71df50 2232 struct qeth_cmd_buffer *iob;
8ce7a9e0 2233 u16 max_mtu;
73657a3e 2234 int rc;
4a71df50 2235
57a688aa 2236 QETH_CARD_TEXT(card, 2, "ulpenabl");
4a71df50 2237
1273a800
JW		 2238 iob = qeth_mpc_get_cmd_buffer(card);
2239 if (!iob)
2240 return -ENOMEM;
4a71df50 2241
1273a800 2242 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
92d27209 2243 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
4a71df50
FB		 2244 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2245 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2246 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2247 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2248 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
4a71df50 2249 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
8ce7a9e0
JW		 2250 qeth_ulp_enable_cb, &max_mtu);
2251 if (rc)
2252 return rc;
2253 return qeth_update_max_mtu(card, max_mtu);
4a71df50
FB		 2254}
2255
2256static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2257 unsigned long data)
2258{
2259 struct qeth_cmd_buffer *iob;
2260
57a688aa 2261 QETH_CARD_TEXT(card, 2, "ulpstpcb");
4a71df50
FB		 2262
2263 iob = (struct qeth_cmd_buffer *) data;
2264 memcpy(&card->token.ulp_connection_r,
2265 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2266 QETH_MPC_TOKEN_LENGTH);
65a1f898
UB		 2267 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2268 3)) {
57a688aa 2269 QETH_CARD_TEXT(card, 2, "olmlimit");
65a1f898
UB		 2270 dev_err(&card->gdev->dev, "A connection could not be "
2271 "established because of an OLM limit\n");
4b7ae122 2272 return -EMLINK;
65a1f898 2273 }
7bf9bcff 2274 return 0;
4a71df50
FB		 2275}
2276
2277static int qeth_ulp_setup(struct qeth_card *card)
2278{
2279 int rc;
2280 __u16 temp;
2281 struct qeth_cmd_buffer *iob;
2282 struct ccw_dev_id dev_id;
2283
57a688aa 2284 QETH_CARD_TEXT(card, 2, "ulpsetup");
4a71df50 2285
1273a800
JW		 2286 iob = qeth_mpc_get_cmd_buffer(card);
2287 if (!iob)
2288 return -ENOMEM;
4a71df50 2289
1273a800 2290 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
4a71df50
FB		 2291 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2292 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2293 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2294 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2295 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2296 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2297
2298 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2299 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2300 temp = (card->info.cula << 8) + card->info.unit_addr2;
2301 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2302 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2303 qeth_ulp_setup_cb, NULL);
2304 return rc;
2305}
2306
0da9581d
EL		 2307static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2308{
0da9581d
EL		 2309 struct qeth_qdio_out_buffer *newbuf;
2310
0da9581d 2311 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
3b346c18
JW		 2312 if (!newbuf)
2313 return -ENOMEM;
2314
d445a4e2 2315 newbuf->buffer = q->qdio_bufs[bidx];
0da9581d
EL		 2316 skb_queue_head_init(&newbuf->skb_list);
2317 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2318 newbuf->q = q;
0da9581d
EL		 2319 newbuf->next_pending = q->bufs[bidx];
2320 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2321 q->bufs[bidx] = newbuf;
3b346c18 2322 return 0;
0da9581d
EL		 2323}
2324
afa0c590 2325static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
d445a4e2
SO		 2326{
2327 if (!q)
2328 return;
2329
41c47da3 2330 qeth_drain_output_queue(q, true);
d445a4e2
SO		 2331 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2332 kfree(q);
2333}
2334
41c47da3 2335static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
d445a4e2
SO		 2336{
2337 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2338
2339 if (!q)
2340 return NULL;
2341
2342 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2343 kfree(q);
2344 return NULL;
2345 }
2346 return q;
2347}
0da9581d 2348
41c47da3 2349static int qeth_alloc_qdio_queues(struct qeth_card *card)
4a71df50
FB		 2350{
2351 int i, j;
2352
57a688aa 2353 QETH_CARD_TEXT(card, 2, "allcqdbf");
4a71df50
FB		 2354
2355 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2356 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2357 return 0;
2358
57a688aa 2359 QETH_CARD_TEXT(card, 2, "inq");
4601ba6c 2360 card->qdio.in_q = qeth_alloc_qdio_queue();
4a71df50
FB		 2361 if (!card->qdio.in_q)
2362 goto out_nomem;
4601ba6c 2363
4a71df50
FB		 2364 /* inbound buffer pool */
2365 if (qeth_alloc_buffer_pool(card))
2366 goto out_freeinq;
0da9581d 2367
4a71df50 2368 /* outbound */
4a71df50 2369 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3 2370 card->qdio.out_qs[i] = qeth_alloc_output_queue();
4a71df50
FB		 2371 if (!card->qdio.out_qs[i])
2372 goto out_freeoutq;
57a688aa
JW		 2373 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2374 QETH_CARD_HEX(card, 2, &card->qdio.out_qs[i], sizeof(void *));
7b579ce5 2375 card->qdio.out_qs[i]->card = card;
4a71df50
FB		 2376 card->qdio.out_qs[i]->queue_no = i;
2377 /* give outbound qeth_qdio_buffers their qdio_buffers */
2378 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
18af5c17 2379 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
0da9581d
EL		 2380 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2381 goto out_freeoutqbufs;
4a71df50
FB		 2382 }
2383 }
0da9581d
EL		 2384
2385 /* completion */
2386 if (qeth_alloc_cq(card))
2387 goto out_freeoutq;
2388
4a71df50
FB		 2389 return 0;
2390
0da9581d
EL		 2391out_freeoutqbufs:
2392 while (j > 0) {
2393 --j;
2394 kmem_cache_free(qeth_qdio_outbuf_cache,
2395 card->qdio.out_qs[i]->bufs[j]);
2396 card->qdio.out_qs[i]->bufs[j] = NULL;
2397 }
4a71df50 2398out_freeoutq:
bb92d3f8 2399 while (i > 0) {
afa0c590 2400 qeth_free_output_queue(card->qdio.out_qs[--i]);
bb92d3f8
JW		 2401 card->qdio.out_qs[i] = NULL;
2402 }
4a71df50
FB		 2403 qeth_free_buffer_pool(card);
2404out_freeinq:
4601ba6c 2405 qeth_free_qdio_queue(card->qdio.in_q);
4a71df50
FB		 2406 card->qdio.in_q = NULL;
2407out_nomem:
2408 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2409 return -ENOMEM;
2410}
2411
41c47da3 2412static void qeth_free_qdio_queues(struct qeth_card *card)
d445a4e2
SO		 2413{
2414 int i, j;
2415
2416 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2417 QETH_QDIO_UNINITIALIZED)
2418 return;
2419
2420 qeth_free_cq(card);
2421 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2422 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2423 if (card->qdio.in_q->bufs[j].rx_skb)
2424 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2425 }
2426 qeth_free_qdio_queue(card->qdio.in_q);
2427 card->qdio.in_q = NULL;
2428 /* inbound buffer pool */
2429 qeth_free_buffer_pool(card);
2430 /* free outbound qdio_qs */
bb92d3f8
JW		 2431 for (i = 0; i < card->qdio.no_out_queues; i++) {
2432 qeth_free_output_queue(card->qdio.out_qs[i]);
2433 card->qdio.out_qs[i] = NULL;
d445a4e2
SO		 2434 }
2435}
2436
4a71df50
FB		 2437static void qeth_create_qib_param_field(struct qeth_card *card,
2438 char *param_field)
2439{
2440
2441 param_field[0] = _ascebc['P'];
2442 param_field[1] = _ascebc['C'];
2443 param_field[2] = _ascebc['I'];
2444 param_field[3] = _ascebc['T'];
2445 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2446 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2447 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2448}
2449
2450static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2451 char *param_field)
2452{
2453 param_field[16] = _ascebc['B'];
2454 param_field[17] = _ascebc['L'];
2455 param_field[18] = _ascebc['K'];
2456 param_field[19] = _ascebc['T'];
2457 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2458 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2459 *((unsigned int *) (&param_field[28])) =
2460 card->info.blkt.inter_packet_jumbo;
2461}
2462
2463static int qeth_qdio_activate(struct qeth_card *card)
2464{
57a688aa 2465 QETH_CARD_TEXT(card, 3, "qdioact");
779e6e1c 2466 return qdio_activate(CARD_DDEV(card));
4a71df50
FB		 2467}
2468
2469static int qeth_dm_act(struct qeth_card *card)
2470{
2471 int rc;
2472 struct qeth_cmd_buffer *iob;
2473
57a688aa 2474 QETH_CARD_TEXT(card, 2, "dmact");
4a71df50 2475
1273a800
JW		 2476 iob = qeth_mpc_get_cmd_buffer(card);
2477 if (!iob)
2478 return -ENOMEM;
4a71df50 2479
1273a800 2480 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
4a71df50
FB		 2481 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2482 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2483 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2484 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2485 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2486 return rc;
2487}
2488
2489static int qeth_mpc_initialize(struct qeth_card *card)
2490{
2491 int rc;
2492
57a688aa 2493 QETH_CARD_TEXT(card, 2, "mpcinit");
4a71df50
FB		 2494
2495 rc = qeth_issue_next_read(card);
2496 if (rc) {
57a688aa 2497 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2498 return rc;
2499 }
2500 rc = qeth_cm_enable(card);
2501 if (rc) {
57a688aa 2502 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
4a71df50
FB		 2503 goto out_qdio;
2504 }
2505 rc = qeth_cm_setup(card);
2506 if (rc) {
57a688aa 2507 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 2508 goto out_qdio;
2509 }
2510 rc = qeth_ulp_enable(card);
2511 if (rc) {
57a688aa 2512 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 2513 goto out_qdio;
2514 }
2515 rc = qeth_ulp_setup(card);
2516 if (rc) {
57a688aa 2517 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 2518 goto out_qdio;
2519 }
41c47da3 2520 rc = qeth_alloc_qdio_queues(card);
4a71df50 2521 if (rc) {
57a688aa 2522 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 2523 goto out_qdio;
2524 }
2525 rc = qeth_qdio_establish(card);
2526 if (rc) {
57a688aa 2527 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
41c47da3 2528 qeth_free_qdio_queues(card);
4a71df50
FB		 2529 goto out_qdio;
2530 }
2531 rc = qeth_qdio_activate(card);
2532 if (rc) {
57a688aa 2533 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
4a71df50
FB		 2534 goto out_qdio;
2535 }
2536 rc = qeth_dm_act(card);
2537 if (rc) {
57a688aa 2538 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
4a71df50
FB		 2539 goto out_qdio;
2540 }
2541
2542 return 0;
2543out_qdio:
379ac99e 2544 qeth_qdio_clear_card(card, !IS_IQD(card));
22ae2790 2545 qdio_free(CARD_DDEV(card));
4a71df50
FB		 2546 return rc;
2547}
2548
4a71df50
FB		 2549void qeth_print_status_message(struct qeth_card *card)
2550{
2551 switch (card->info.type) {
5113fec0
UB		 2552 case QETH_CARD_TYPE_OSD:
2553 case QETH_CARD_TYPE_OSM:
2554 case QETH_CARD_TYPE_OSX:
4a71df50
FB		 2555 /* VM will use a non-zero first character
2556 * to indicate a HiperSockets like reporting
2557 * of the level OSA sets the first character to zero
2558 * */
2559 if (!card->info.mcl_level[0]) {
2560 sprintf(card->info.mcl_level, "%02x%02x",
2561 card->info.mcl_level[2],
2562 card->info.mcl_level[3]);
4a71df50
FB		 2563 break;
2564 }
2565 /* fallthrough */
2566 case QETH_CARD_TYPE_IQD:
379ac99e 2567 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
4a71df50
FB		 2568 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2569 card->info.mcl_level[0]];
2570 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2571 card->info.mcl_level[1]];
2572 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2573 card->info.mcl_level[2]];
2574 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2575 card->info.mcl_level[3]];
2576 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2577 }
2578 break;
2579 default:
2580 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2581 }
239ff408
UB		 2582 dev_info(&card->gdev->dev,
2583 "Device is a%s card%s%s%s\nwith link type %s.\n",
2584 qeth_get_cardname(card),
2585 (card->info.mcl_level[0]) ? " (level: " : "",
2586 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2587 (card->info.mcl_level[0]) ? ")" : "",
2588 qeth_get_cardname_short(card));
4a71df50
FB		 2589}
2590EXPORT_SYMBOL_GPL(qeth_print_status_message);
2591
4a71df50
FB		 2592static void qeth_initialize_working_pool_list(struct qeth_card *card)
2593{
2594 struct qeth_buffer_pool_entry *entry;
2595
847a50fd 2596 QETH_CARD_TEXT(card, 5, "inwrklst");
4a71df50
FB		 2597
2598 list_for_each_entry(entry,
2599 &card->qdio.init_pool.entry_list, init_list) {
2600 qeth_put_buffer_pool_entry(card, entry);
2601 }
2602}
2603
cef6ff22
JW		 2604static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2605 struct qeth_card *card)
4a71df50
FB		 2606{
2607 struct list_head *plh;
2608 struct qeth_buffer_pool_entry *entry;
2609 int i, free;
2610 struct page *page;
2611
2612 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2613 return NULL;
2614
2615 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2616 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2617 free = 1;
2618 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2619 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2620 free = 0;
2621 break;
2622 }
2623 }
2624 if (free) {
2625 list_del_init(&entry->list);
2626 return entry;
2627 }
2628 }
2629
2630 /* no free buffer in pool so take first one and swap pages */
2631 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2632 struct qeth_buffer_pool_entry, list);
2633 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2634 if (page_count(virt_to_page(entry->elements[i])) > 1) {
508b3c4f 2635 page = alloc_page(GFP_ATOMIC);
4a71df50
FB		 2636 if (!page) {
2637 return NULL;
2638 } else {
2639 free_page((unsigned long)entry->elements[i]);
2640 entry->elements[i] = page_address(page);
b0abc4f5 2641 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
4a71df50
FB		 2642 }
2643 }
2644 }
2645 list_del_init(&entry->list);
2646 return entry;
2647}
2648
2649static int qeth_init_input_buffer(struct qeth_card *card,
2650 struct qeth_qdio_buffer *buf)
2651{
2652 struct qeth_buffer_pool_entry *pool_entry;
2653 int i;
2654
b3332930 2655 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
37cf05d2
JW		 2656 buf->rx_skb = netdev_alloc_skb(card->dev,
2657 QETH_RX_PULL_LEN + ETH_HLEN);
b3332930
FB		 2658 if (!buf->rx_skb)
2659 return 1;
2660 }
2661
4a71df50
FB		 2662 pool_entry = qeth_find_free_buffer_pool_entry(card);
2663 if (!pool_entry)
2664 return 1;
2665
2666 /*
2667 * since the buffer is accessed only from the input_tasklet
2668 * there shouldn't be a need to synchronize; also, since we use
2669 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2670 * buffers
2671 */
4a71df50
FB		 2672
2673 buf->pool_entry = pool_entry;
2674 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2675 buf->buffer->element[i].length = PAGE_SIZE;
2676 buf->buffer->element[i].addr = pool_entry->elements[i];
2677 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
3ec90878 2678 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
4a71df50 2679 else
3ec90878
JG		 2680 buf->buffer->element[i].eflags = 0;
2681 buf->buffer->element[i].sflags = 0;
4a71df50
FB		 2682 }
2683 return 0;
2684}
2685
2686int qeth_init_qdio_queues(struct qeth_card *card)
2687{
7b579ce5 2688 unsigned int i;
4a71df50
FB		 2689 int rc;
2690
57a688aa 2691 QETH_CARD_TEXT(card, 2, "initqdqs");
4a71df50
FB		 2692
2693 /* inbound queue */
1b45c80b
JW		 2694 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2695 memset(&card->rx, 0, sizeof(struct qeth_rx));
4a71df50
FB		 2696 qeth_initialize_working_pool_list(card);
2697 /*give only as many buffers to hardware as we have buffer pool entries*/
2698 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2699 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2700 card->qdio.in_q->next_buf_to_init =
2701 card->qdio.in_buf_pool.buf_count - 1;
2702 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
779e6e1c 2703 card->qdio.in_buf_pool.buf_count - 1);
4a71df50 2704 if (rc) {
57a688aa 2705 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2706 return rc;
2707 }
0da9581d
EL		 2708
2709 /* completion */
2710 rc = qeth_cq_init(card);
2711 if (rc) {
2712 return rc;
2713 }
2714
4a71df50
FB		 2715 /* outbound queue */
2716 for (i = 0; i < card->qdio.no_out_queues; ++i) {
4e26c5fe
JW		 2717 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2718
2719 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2720 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2721 queue->next_buf_to_fill = 0;
2722 queue->do_pack = 0;
2723 atomic_set(&queue->used_buffers, 0);
2724 atomic_set(&queue->set_pci_flags_count, 0);
2725 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4a71df50
FB		 2726 }
2727 return 0;
2728}
2729EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2730
cef6ff22 2731static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
4a71df50
FB		 2732{
2733 switch (link_type) {
2734 case QETH_LINK_TYPE_HSTR:
2735 return 2;
2736 default:
2737 return 1;
2738 }
2739}
2740
2741static void qeth_fill_ipacmd_header(struct qeth_card *card,
500abbf0
JW		 2742 struct qeth_ipa_cmd *cmd,
2743 enum qeth_ipa_cmds command,
2744 enum qeth_prot_versions prot)
4a71df50 2745{
4a71df50
FB		 2746 cmd->hdr.command = command;
2747 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
d22ffb5a 2748 /* cmd->hdr.seqno is set by qeth_send_control_data() */
4a71df50 2749 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
92d27209 2750 cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port;
4fda3354 2751 cmd->hdr.prim_version_no = IS_LAYER2(card) ? 2 : 1;
4a71df50
FB		 2752 cmd->hdr.param_count = 1;
2753 cmd->hdr.prot_version = prot;
4a71df50
FB		 2754}
2755
48ce6f89
JW		 2756static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2757 struct qeth_cmd_buffer *iob,
2758 unsigned int length)
2759{
2760 qeth_mpc_finalize_cmd(card, iob, length);
2761
2762 /* override with IPA-specific values: */
2763 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa;
2764 iob->reply->seqno = card->seqno.ipa++;
2765}
2766
c2153277
JW		 2767void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2768 u16 cmd_length)
605c9d5f 2769{
c2153277 2770 u16 total_length = IPA_PDU_HEADER_SIZE + cmd_length;
605c9d5f
JW		 2771 u8 prot_type = qeth_mpc_select_prot_type(card);
2772
48ce6f89 2773 iob->finalize = qeth_ipa_finalize_cmd;
782e4a79
JW		 2774 iob->timeout = QETH_IPA_TIMEOUT;
2775
605c9d5f 2776 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
c2153277 2777 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
605c9d5f 2778 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
c2153277
JW		 2779 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2780 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
605c9d5f
JW		 2781 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2782 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c2153277 2783 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
605c9d5f
JW		 2784}
2785EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2786
4a71df50
FB		 2787struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2788 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2789{
2790 struct qeth_cmd_buffer *iob;
4a71df50 2791
1aec42bc
TR		 2792 iob = qeth_get_buffer(&card->write);
2793 if (iob) {
c2153277 2794 qeth_prepare_ipa_cmd(card, iob, sizeof(struct qeth_ipa_cmd));
ff5caa7a 2795 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot);
1aec42bc
TR		 2796 } else {
2797 dev_warn(&card->gdev->dev,
2798 "The qeth driver ran out of channel command buffers\n");
e19e5be8
JW		 2799 QETH_DBF_MESSAGE(1, "device %x ran out of channel command buffers",
2800 CARD_DEVID(card));
1aec42bc 2801 }
4a71df50
FB		 2802
2803 return iob;
2804}
2805EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2806
a59d121d
JW		 2807struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2808 enum qeth_ipa_cmds cmd_code,
2809 enum qeth_prot_versions prot,
2810 unsigned int data_length)
2811{
2812 struct qeth_cmd_buffer *iob;
2813
2814 data_length += offsetof(struct qeth_ipa_cmd, data);
2815 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2816 QETH_IPA_TIMEOUT);
2817 if (!iob)
2818 return NULL;
2819
2820 qeth_prepare_ipa_cmd(card, iob, data_length);
2821 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), cmd_code, prot);
2822 return iob;
2823}
2824EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
2825
742d4d40
JW		 2826static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
2827 struct qeth_reply *reply, unsigned long data)
2828{
2829 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2830
2831 return (cmd->hdr.return_code) ? -EIO : 0;
2832}
2833
efbbc1d5
EC		 2834/**
2835 * qeth_send_ipa_cmd() - send an IPA command
2836 *
2837 * See qeth_send_control_data() for explanation of the arguments.
2838 */
2839
4a71df50
FB		 2840int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2841 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2842 unsigned long),
2843 void *reply_param)
2844{
c2153277 2845 u16 length;
4a71df50 2846 int rc;
4a71df50 2847
847a50fd 2848 QETH_CARD_TEXT(card, 4, "sendipa");
742d4d40 2849
2e873d10 2850 if (card->read_or_write_problem) {
fcda7f73 2851 qeth_release_buffer(iob);
2e873d10
JW		 2852 return -EIO;
2853 }
2854
742d4d40
JW		 2855 if (reply_cb == NULL)
2856 reply_cb = qeth_send_ipa_cmd_cb;
c2153277
JW		 2857 memcpy(&length, QETH_IPA_PDU_LEN_TOTAL(iob->data), 2);
2858 rc = qeth_send_control_data(card, length, iob, reply_cb, reply_param);
908abbb5
UB		 2859 if (rc == -ETIME) {
2860 qeth_clear_ipacmd_list(card);
2861 qeth_schedule_recovery(card);
2862 }
4a71df50
FB		 2863 return rc;
2864}
2865EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2866
4b7ae122
JW		 2867static int qeth_send_startlan_cb(struct qeth_card *card,
2868 struct qeth_reply *reply, unsigned long data)
2869{
2870 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2871
2872 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
2873 return -ENETDOWN;
2874
2875 return (cmd->hdr.return_code) ? -EIO : 0;
2876}
2877
10340510 2878static int qeth_send_startlan(struct qeth_card *card)
4a71df50 2879{
70919e23 2880 struct qeth_cmd_buffer *iob;
4a71df50 2881
57a688aa 2882 QETH_CARD_TEXT(card, 2, "strtlan");
4a71df50 2883
a59d121d 2884 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
1aec42bc
TR		 2885 if (!iob)
2886 return -ENOMEM;
4b7ae122 2887 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
4a71df50 2888}
4a71df50 2889
686c97ee 2890static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
4a71df50 2891{
686c97ee 2892 if (!cmd->hdr.return_code)
4a71df50
FB		 2893 cmd->hdr.return_code =
2894 cmd->data.setadapterparms.hdr.return_code;
686c97ee 2895 return cmd->hdr.return_code;
4a71df50 2896}
4a71df50
FB		 2897
2898static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2899 struct qeth_reply *reply, unsigned long data)
2900{
686c97ee 2901 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50 2902
847a50fd 2903 QETH_CARD_TEXT(card, 3, "quyadpcb");
686c97ee 2904 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 2905 return -EIO;
4a71df50 2906
5113fec0 2907 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
4a71df50
FB		 2908 card->info.link_type =
2909 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
57a688aa 2910 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
5113fec0 2911 }
4a71df50
FB		 2912 card->options.adp.supported_funcs =
2913 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
686c97ee 2914 return 0;
4a71df50
FB		 2915}
2916
eb3fb0ba 2917static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
b9150461
JW		 2918 enum qeth_ipa_setadp_cmd adp_cmd,
2919 unsigned int data_length)
4a71df50 2920{
b9150461 2921 struct qeth_ipacmd_setadpparms_hdr *hdr;
4a71df50 2922 struct qeth_cmd_buffer *iob;
4a71df50 2923
b9150461
JW		 2924 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
2925 data_length +
2926 offsetof(struct qeth_ipacmd_setadpparms,
2927 data));
2928 if (!iob)
2929 return NULL;
4a71df50 2930
b9150461
JW		 2931 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
2932 hdr->cmdlength = sizeof(*hdr) + data_length;
2933 hdr->command_code = adp_cmd;
2934 hdr->used_total = 1;
2935 hdr->seq_no = 1;
4a71df50
FB		 2936 return iob;
2937}
4a71df50 2938
09960b3a 2939static int qeth_query_setadapterparms(struct qeth_card *card)
4a71df50
FB		 2940{
2941 int rc;
2942 struct qeth_cmd_buffer *iob;
2943
847a50fd 2944 QETH_CARD_TEXT(card, 3, "queryadp");
4a71df50 2945 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
b9150461 2946 SETADP_DATA_SIZEOF(query_cmds_supp));
1aec42bc
TR		 2947 if (!iob)
2948 return -ENOMEM;
4a71df50
FB		 2949 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2950 return rc;
2951}
4a71df50 2952
1da74b1c
FB		 2953static int qeth_query_ipassists_cb(struct qeth_card *card,
2954 struct qeth_reply *reply, unsigned long data)
2955{
2956 struct qeth_ipa_cmd *cmd;
2957
57a688aa 2958 QETH_CARD_TEXT(card, 2, "qipasscb");
1da74b1c
FB		 2959
2960 cmd = (struct qeth_ipa_cmd *) data;
a134884a
SR		 2961
2962 switch (cmd->hdr.return_code) {
742d4d40
JW		 2963 case IPA_RC_SUCCESS:
2964 break;
a134884a
SR		 2965 case IPA_RC_NOTSUPP:
2966 case IPA_RC_L2_UNSUPPORTED_CMD:
57a688aa 2967 QETH_CARD_TEXT(card, 2, "ipaunsup");
a134884a
SR		 2968 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2969 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
742d4d40 2970 return -EOPNOTSUPP;
a134884a 2971 default:
742d4d40
JW		 2972 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2973 CARD_DEVID(card), cmd->hdr.return_code);
2974 return -EIO;
a134884a
SR		 2975 }
2976
1da74b1c
FB		 2977 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2978 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2979 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
a134884a 2980 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
1da74b1c
FB		 2981 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2982 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
a134884a 2983 } else
e19e5be8
JW		 2984 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
2985 CARD_DEVID(card));
1da74b1c
FB		 2986 return 0;
2987}
2988
09960b3a
JW		 2989static int qeth_query_ipassists(struct qeth_card *card,
2990 enum qeth_prot_versions prot)
1da74b1c
FB		 2991{
2992 int rc;
2993 struct qeth_cmd_buffer *iob;
2994
57a688aa 2995 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
a59d121d 2996 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
1aec42bc
TR		 2997 if (!iob)
2998 return -ENOMEM;
1da74b1c
FB		 2999 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3000 return rc;
3001}
1da74b1c 3002
45cbb2e4
SR		 3003static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3004 struct qeth_reply *reply, unsigned long data)
3005{
686c97ee 3006 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
45cbb2e4 3007 struct qeth_query_switch_attributes *attrs;
686c97ee 3008 struct qeth_switch_info *sw_info;
45cbb2e4
SR		 3009
3010 QETH_CARD_TEXT(card, 2, "qswiatcb");
686c97ee 3011 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3012 return -EIO;
45cbb2e4 3013
686c97ee
JW		 3014 sw_info = (struct qeth_switch_info *)reply->param;
3015 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3016 sw_info->capabilities = attrs->capabilities;
3017 sw_info->settings = attrs->settings;
3018 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3019 sw_info->settings);
45cbb2e4
SR		 3020 return 0;
3021}
3022
3023int qeth_query_switch_attributes(struct qeth_card *card,
3024 struct qeth_switch_info *sw_info)
3025{
3026 struct qeth_cmd_buffer *iob;
3027
3028 QETH_CARD_TEXT(card, 2, "qswiattr");
3029 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3030 return -EOPNOTSUPP;
3031 if (!netif_carrier_ok(card->dev))
3032 return -ENOMEDIUM;
b9150461 3033 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
1aec42bc
TR		 3034 if (!iob)
3035 return -ENOMEM;
45cbb2e4
SR		 3036 return qeth_send_ipa_cmd(card, iob,
3037 qeth_query_switch_attributes_cb, sw_info);
3038}
45cbb2e4 3039
5cfbe10a
JW		 3040struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3041 enum qeth_diags_cmds sub_cmd,
3042 unsigned int data_length)
3043{
3044 struct qeth_ipacmd_diagass *cmd;
3045 struct qeth_cmd_buffer *iob;
3046
3047 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3048 DIAG_HDR_LEN + data_length);
3049 if (!iob)
3050 return NULL;
3051
3052 cmd = &__ipa_cmd(iob)->data.diagass;
3053 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3054 cmd->subcmd = sub_cmd;
3055 return iob;
3056}
3057EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3058
1da74b1c
FB		 3059static int qeth_query_setdiagass_cb(struct qeth_card *card,
3060 struct qeth_reply *reply, unsigned long data)
3061{
742d4d40
JW		 3062 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3063 u16 rc = cmd->hdr.return_code;
1da74b1c 3064
742d4d40 3065 if (rc) {
1da74b1c 3066 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
742d4d40
JW		 3067 return -EIO;
3068 }
3069
3070 card->info.diagass_support = cmd->data.diagass.ext;
1da74b1c
FB		 3071 return 0;
3072}
3073
3074static int qeth_query_setdiagass(struct qeth_card *card)
3075{
3076 struct qeth_cmd_buffer *iob;
1da74b1c 3077
57a688aa 3078 QETH_CARD_TEXT(card, 2, "qdiagass");
5cfbe10a 3079 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
1aec42bc
TR		 3080 if (!iob)
3081 return -ENOMEM;
1da74b1c
FB		 3082 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3083}
3084
3085static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3086{
3087 unsigned long info = get_zeroed_page(GFP_KERNEL);
3088 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3089 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3090 struct ccw_dev_id ccwid;
caf757c6 3091 int level;
1da74b1c
FB		 3092
3093 tid->chpid = card->info.chpid;
3094 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3095 tid->ssid = ccwid.ssid;
3096 tid->devno = ccwid.devno;
3097 if (!info)
3098 return;
caf757c6
HC		 3099 level = stsi(NULL, 0, 0, 0);
3100 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
1da74b1c 3101 tid->lparnr = info222->lpar_number;
caf757c6 3102 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
1da74b1c
FB		 3103 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3104 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3105 }
3106 free_page(info);
3107 return;
3108}
3109
3110static int qeth_hw_trap_cb(struct qeth_card *card,
3111 struct qeth_reply *reply, unsigned long data)
3112{
742d4d40
JW		 3113 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3114 u16 rc = cmd->hdr.return_code;
1da74b1c 3115
742d4d40 3116 if (rc) {
1da74b1c 3117 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
742d4d40
JW		 3118 return -EIO;
3119 }
1da74b1c
FB		 3120 return 0;
3121}
3122
3123int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3124{
3125 struct qeth_cmd_buffer *iob;
3126 struct qeth_ipa_cmd *cmd;
3127
57a688aa 3128 QETH_CARD_TEXT(card, 2, "diagtrap");
5cfbe10a 3129 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
1aec42bc
TR		 3130 if (!iob)
3131 return -ENOMEM;
ff5caa7a 3132 cmd = __ipa_cmd(iob);
1da74b1c
FB		 3133 cmd->data.diagass.type = 1;
3134 cmd->data.diagass.action = action;
3135 switch (action) {
3136 case QETH_DIAGS_TRAP_ARM:
3137 cmd->data.diagass.options = 0x0003;
3138 cmd->data.diagass.ext = 0x00010000 +
3139 sizeof(struct qeth_trap_id);
3140 qeth_get_trap_id(card,
3141 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3142 break;
3143 case QETH_DIAGS_TRAP_DISARM:
3144 cmd->data.diagass.options = 0x0001;
3145 break;
3146 case QETH_DIAGS_TRAP_CAPTURE:
3147 break;
3148 }
3149 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3150}
3151EXPORT_SYMBOL_GPL(qeth_hw_trap);
3152
d73ef324
JW		 3153static int qeth_check_qdio_errors(struct qeth_card *card,
3154 struct qdio_buffer *buf,
3155 unsigned int qdio_error,
3156 const char *dbftext)
4a71df50 3157{
779e6e1c 3158 if (qdio_error) {
847a50fd 3159 QETH_CARD_TEXT(card, 2, dbftext);
38593d01 3160 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3ec90878 3161 buf->element[15].sflags);
38593d01 3162 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3ec90878 3163 buf->element[14].sflags);
38593d01 3164 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3ec90878 3165 if ((buf->element[15].sflags) == 0x12) {
b0abc4f5 3166 QETH_CARD_STAT_INC(card, rx_dropped);
76b11f8e
UB		 3167 return 0;
3168 } else
3169 return 1;
4a71df50
FB		 3170 }
3171 return 0;
3172}
4a71df50 3173
d73ef324 3174static void qeth_queue_input_buffer(struct qeth_card *card, int index)
4a71df50
FB		 3175{
3176 struct qeth_qdio_q *queue = card->qdio.in_q;
b3332930 3177 struct list_head *lh;
4a71df50
FB		 3178 int count;
3179 int i;
3180 int rc;
3181 int newcount = 0;
3182
4a71df50
FB		 3183 count = (index < queue->next_buf_to_init)?
3184 card->qdio.in_buf_pool.buf_count -
3185 (queue->next_buf_to_init - index) :
3186 card->qdio.in_buf_pool.buf_count -
3187 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3188 /* only requeue at a certain threshold to avoid SIGAs */
3189 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3190 for (i = queue->next_buf_to_init;
3191 i < queue->next_buf_to_init + count; ++i) {
3192 if (qeth_init_input_buffer(card,
3193 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3194 break;
3195 } else {
3196 newcount++;
3197 }
3198 }
3199
3200 if (newcount < count) {
3201 /* we are in memory shortage so we switch back to
3202 traditional skb allocation and drop packages */
4a71df50
FB		 3203 atomic_set(&card->force_alloc_skb, 3);
3204 count = newcount;
3205 } else {
4a71df50
FB		 3206 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3207 }
3208
b3332930
FB		 3209 if (!count) {
3210 i = 0;
3211 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3212 i++;
3213 if (i == card->qdio.in_buf_pool.buf_count) {
3214 QETH_CARD_TEXT(card, 2, "qsarbw");
3215 card->reclaim_index = index;
3216 schedule_delayed_work(
3217 &card->buffer_reclaim_work,
3218 QETH_RECLAIM_WORK_TIME);
3219 }
3220 return;
3221 }
3222
4a71df50
FB		 3223 /*
3224 * according to old code it should be avoided to requeue all
3225 * 128 buffers in order to benefit from PCI avoidance.
3226 * this function keeps at least one buffer (the buffer at
3227 * 'index') un-requeued -> this buffer is the first buffer that
3228 * will be requeued the next time
3229 */
779e6e1c
JG		 3230 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3231 queue->next_buf_to_init, count);
4a71df50 3232 if (rc) {
847a50fd 3233 QETH_CARD_TEXT(card, 2, "qinberr");
4a71df50
FB		 3234 }
3235 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3236 QDIO_MAX_BUFFERS_PER_Q;
3237 }
3238}
d73ef324
JW		 3239
3240static void qeth_buffer_reclaim_work(struct work_struct *work)
3241{
3242 struct qeth_card *card = container_of(work, struct qeth_card,
3243 buffer_reclaim_work.work);
3244
3245 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3246 qeth_queue_input_buffer(card, card->reclaim_index);
3247}
4a71df50 3248
d7a39937 3249static void qeth_handle_send_error(struct qeth_card *card,
779e6e1c 3250 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
4a71df50 3251{
3ec90878 3252 int sbalf15 = buffer->buffer->element[15].sflags;
4a71df50 3253
847a50fd 3254 QETH_CARD_TEXT(card, 6, "hdsnderr");
76b11f8e 3255 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
d303b6fd
JG		 3256
3257 if (!qdio_err)
d7a39937 3258 return;
d303b6fd
JG		 3259
3260 if ((sbalf15 >= 15) && (sbalf15 <= 31))
d7a39937 3261 return;
d303b6fd 3262
847a50fd
CO		 3263 QETH_CARD_TEXT(card, 1, "lnkfail");
3264 QETH_CARD_TEXT_(card, 1, "%04x %02x",
d303b6fd 3265 (u16)qdio_err, (u8)sbalf15);
4a71df50
FB		 3266}
3267
664e42ac
JW		 3268/**
3269 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3270 * @queue: queue to check for packing buffer
3271 *
3272 * Returns number of buffers that were prepared for flush.
3273 */
3274static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3275{
3276 struct qeth_qdio_out_buffer *buffer;
3277
3278 buffer = queue->bufs[queue->next_buf_to_fill];
3279 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3280 (buffer->next_element_to_fill > 0)) {
3281 /* it's a packing buffer */
3282 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3283 queue->next_buf_to_fill =
3284 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3285 return 1;
3286 }
3287 return 0;
3288}
3289
4a71df50
FB		 3290/*
3291 * Switched to packing state if the number of used buffers on a queue
3292 * reaches a certain limit.
3293 */
3294static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3295{
3296 if (!queue->do_pack) {
3297 if (atomic_read(&queue->used_buffers)
3298 >= QETH_HIGH_WATERMARK_PACK){
3299 /* switch non-PACKING -> PACKING */
847a50fd 3300 QETH_CARD_TEXT(queue->card, 6, "np->pack");
b0abc4f5 3301 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50
FB		 3302 queue->do_pack = 1;
3303 }
3304 }
3305}
3306
3307/*
3308 * Switches from packing to non-packing mode. If there is a packing
3309 * buffer on the queue this buffer will be prepared to be flushed.
3310 * In that case 1 is returned to inform the caller. If no buffer
3311 * has to be flushed, zero is returned.
3312 */
3313static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3314{
4a71df50
FB		 3315 if (queue->do_pack) {
3316 if (atomic_read(&queue->used_buffers)
3317 <= QETH_LOW_WATERMARK_PACK) {
3318 /* switch PACKING -> non-PACKING */
847a50fd 3319 QETH_CARD_TEXT(queue->card, 6, "pack->np");
b0abc4f5 3320 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50 3321 queue->do_pack = 0;
664e42ac 3322 return qeth_prep_flush_pack_buffer(queue);
4a71df50
FB		 3323 }
3324 }
4a71df50
FB		 3325 return 0;
3326}
3327
779e6e1c
JG		 3328static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3329 int count)
4a71df50
FB		 3330{
3331 struct qeth_qdio_out_buffer *buf;
3332 int rc;
3333 int i;
3334 unsigned int qdio_flags;
3335
4a71df50 3336 for (i = index; i < index + count; ++i) {
0da9581d
EL		 3337 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3338 buf = queue->bufs[bidx];
3ec90878
JG		 3339 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3340 SBAL_EFLAGS_LAST_ENTRY;
4a71df50 3341
0da9581d
EL		 3342 if (queue->bufstates)
3343 queue->bufstates[bidx].user = buf;
3344
379ac99e 3345 if (IS_IQD(queue->card))
4a71df50
FB		 3346 continue;
3347
3348 if (!queue->do_pack) {
3349 if ((atomic_read(&queue->used_buffers) >=
3350 (QETH_HIGH_WATERMARK_PACK -
3351 QETH_WATERMARK_PACK_FUZZ)) &&
3352 !atomic_read(&queue->set_pci_flags_count)) {
3353 /* it's likely that we'll go to packing
3354 * mode soon */
3355 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3356 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3357 }
3358 } else {
3359 if (!atomic_read(&queue->set_pci_flags_count)) {
3360 /*
3361 * there's no outstanding PCI any more, so we
3362 * have to request a PCI to be sure the the PCI
3363 * will wake at some time in the future then we
3364 * can flush packed buffers that might still be
3365 * hanging around, which can happen if no
3366 * further send was requested by the stack
3367 */
3368 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3369 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3370 }
3371 }
3372 }
3373
b0abc4f5 3374 QETH_TXQ_STAT_ADD(queue, bufs, count);
4a71df50 3375 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
4a71df50
FB		 3376 if (atomic_read(&queue->set_pci_flags_count))
3377 qdio_flags |= QDIO_FLAG_PCI_OUT;
3378 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
779e6e1c 3379 queue->queue_no, index, count);
4a71df50 3380 if (rc) {
b0abc4f5 3381 QETH_TXQ_STAT_ADD(queue, tx_errors, count);
d303b6fd 3382 /* ignore temporary SIGA errors without busy condition */
1549d13f 3383 if (rc == -ENOBUFS)
d303b6fd 3384 return;
847a50fd 3385 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
0da9581d
EL		 3386 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3387 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3388 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
847a50fd 3389 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
d303b6fd 3390
4a71df50
FB		 3391 /* this must not happen under normal circumstances. if it
3392 * happens something is really wrong -> recover */
3393 qeth_schedule_recovery(queue->card);
3394 return;
3395 }
4a71df50
FB		 3396}
3397
3398static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3399{
3400 int index;
3401 int flush_cnt = 0;
3402 int q_was_packing = 0;
3403
3404 /*
3405 * check if weed have to switch to non-packing mode or if
3406 * we have to get a pci flag out on the queue
3407 */
3408 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3409 !atomic_read(&queue->set_pci_flags_count)) {
3410 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3411 QETH_OUT_Q_UNLOCKED) {
3412 /*
3413 * If we get in here, there was no action in
3414 * do_send_packet. So, we check if there is a
3415 * packing buffer to be flushed here.
3416 */
4a71df50
FB		 3417 index = queue->next_buf_to_fill;
3418 q_was_packing = queue->do_pack;
3419 /* queue->do_pack may change */
3420 barrier();
3421 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3422 if (!flush_cnt &&
3423 !atomic_read(&queue->set_pci_flags_count))
664e42ac 3424 flush_cnt += qeth_prep_flush_pack_buffer(queue);
b0abc4f5
JW		 3425 if (q_was_packing)
3426 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
4a71df50 3427 if (flush_cnt)
779e6e1c 3428 qeth_flush_buffers(queue, index, flush_cnt);
4a71df50
FB		 3429 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3430 }
3431 }
3432}
3433
7bcd64eb
JW		 3434static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3435 unsigned long card_ptr)
a1c3ed4c
FB		 3436{
3437 struct qeth_card *card = (struct qeth_card *)card_ptr;
3438
d3d1b205 3439 if (card->dev->flags & IFF_UP)
a1c3ed4c
FB		 3440 napi_schedule(&card->napi);
3441}
a1c3ed4c 3442
0da9581d
EL		 3443int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3444{
3445 int rc;
3446
3447 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3448 rc = -1;
3449 goto out;
3450 } else {
3451 if (card->options.cq == cq) {
3452 rc = 0;
3453 goto out;
3454 }
3455
d7d543f2 3456 if (card->state != CARD_STATE_DOWN) {
0da9581d
EL		 3457 rc = -1;
3458 goto out;
3459 }
3460
41c47da3 3461 qeth_free_qdio_queues(card);
0da9581d
EL		 3462 card->options.cq = cq;
3463 rc = 0;
3464 }
3465out:
3466 return rc;
3467
3468}
3469EXPORT_SYMBOL_GPL(qeth_configure_cq);
3470
3b346c18
JW		 3471static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3472 unsigned int queue, int first_element,
3473 int count)
3474{
0da9581d
EL		 3475 struct qeth_qdio_q *cq = card->qdio.c_q;
3476 int i;
3477 int rc;
3478
3479 if (!qeth_is_cq(card, queue))
4326b5b4 3480 return;
0da9581d
EL		 3481
3482 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3483 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3484 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3485
3486 if (qdio_err) {
3a18d754 3487 netif_tx_stop_all_queues(card->dev);
0da9581d 3488 qeth_schedule_recovery(card);
4326b5b4 3489 return;
0da9581d
EL		 3490 }
3491
3492 for (i = first_element; i < first_element + count; ++i) {
3493 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
6d284bde 3494 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3b346c18 3495 int e = 0;
0da9581d 3496
903e4853
UB		 3497 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3498 buffer->element[e].addr) {
0da9581d
EL		 3499 unsigned long phys_aob_addr;
3500
3501 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3502 qeth_qdio_handle_aob(card, phys_aob_addr);
0da9581d
EL		 3503 ++e;
3504 }
3b346c18 3505 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
0da9581d
EL		 3506 }
3507 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3508 card->qdio.c_q->next_buf_to_init,
3509 count);
3510 if (rc) {
3511 dev_warn(&card->gdev->dev,
3512 "QDIO reported an error, rc=%i\n", rc);
3513 QETH_CARD_TEXT(card, 2, "qcqherr");
3514 }
3515 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3516 + count) % QDIO_MAX_BUFFERS_PER_Q;
0da9581d
EL		 3517}
3518
7bcd64eb
JW		 3519static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3520 unsigned int qdio_err, int queue,
3521 int first_elem, int count,
3522 unsigned long card_ptr)
a1c3ed4c
FB		 3523{
3524 struct qeth_card *card = (struct qeth_card *)card_ptr;
3525
0da9581d
EL		 3526 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3527 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3528
3529 if (qeth_is_cq(card, queue))
3530 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3531 else if (qdio_err)
a1c3ed4c
FB		 3532 qeth_schedule_recovery(card);
3533}
a1c3ed4c 3534
7bcd64eb
JW		 3535static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3536 unsigned int qdio_error, int __queue,
3537 int first_element, int count,
3538 unsigned long card_ptr)
4a71df50
FB		 3539{
3540 struct qeth_card *card = (struct qeth_card *) card_ptr;
3541 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3542 struct qeth_qdio_out_buffer *buffer;
3a18d754 3543 struct net_device *dev = card->dev;
54a50941 3544 struct netdev_queue *txq;
4a71df50
FB		 3545 int i;
3546
847a50fd 3547 QETH_CARD_TEXT(card, 6, "qdouhdl");
1549d13f 3548 if (qdio_error & QDIO_ERROR_FATAL) {
847a50fd 3549 QETH_CARD_TEXT(card, 2, "achkcond");
3a18d754 3550 netif_tx_stop_all_queues(dev);
779e6e1c
JG		 3551 qeth_schedule_recovery(card);
3552 return;
4a71df50 3553 }
4326b5b4 3554
4a71df50 3555 for (i = first_element; i < (first_element + count); ++i) {
0da9581d
EL		 3556 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3557 buffer = queue->bufs[bidx];
b67d801f 3558 qeth_handle_send_error(card, buffer, qdio_error);
0da9581d
EL		 3559
3560 if (queue->bufstates &&
3561 (queue->bufstates[bidx].flags &
3562 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
18af5c17 3563 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
b3332930
FB		 3564
3565 if (atomic_cmpxchg(&buffer->state,
3566 QETH_QDIO_BUF_PRIMED,
3567 QETH_QDIO_BUF_PENDING) ==
3568 QETH_QDIO_BUF_PRIMED) {
3569 qeth_notify_skbs(queue, buffer,
3570 TX_NOTIFY_PENDING);
3571 }
0da9581d 3572 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
ce28867f
JW		 3573
3574 /* prepare the queue slot for re-use: */
3575 qeth_scrub_qdio_buffer(buffer->buffer,
4e26c5fe 3576 queue->max_elements);
b3332930
FB		 3577 if (qeth_init_qdio_out_buf(queue, bidx)) {
3578 QETH_CARD_TEXT(card, 2, "outofbuf");
0da9581d 3579 qeth_schedule_recovery(card);
b3332930 3580 }
0da9581d 3581 } else {
b3332930
FB		 3582 if (card->options.cq == QETH_CQ_ENABLED) {
3583 enum iucv_tx_notify n;
3584
3585 n = qeth_compute_cq_notification(
3586 buffer->buffer->element[15].sflags, 0);
3587 qeth_notify_skbs(queue, buffer, n);
3588 }
3589
3b346c18 3590 qeth_clear_output_buffer(queue, buffer);
0da9581d
EL		 3591 }
3592 qeth_cleanup_handled_pending(queue, bidx, 0);
4a71df50
FB		 3593 }
3594 atomic_sub(count, &queue->used_buffers);
3595 /* check if we need to do something on this outbound queue */
379ac99e 3596 if (!IS_IQD(card))
4a71df50
FB		 3597 qeth_check_outbound_queue(queue);
3598
54a50941
JW		 3599 if (IS_IQD(card))
3600 __queue = qeth_iqd_translate_txq(dev, __queue);
3601 txq = netdev_get_tx_queue(dev, __queue);
3602 /* xmit may have observed the full-condition, but not yet stopped the
3603 * txq. In which case the code below won't trigger. So before returning,
3604 * xmit will re-check the txq's fill level and wake it up if needed.
3605 */
3606 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3607 netif_tx_wake_queue(txq);
4a71df50 3608}
4a71df50 3609
290b8348
SR		 3610/**
3611 * Note: Function assumes that we have 4 outbound queues.
3612 */
73dc2daf 3613int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
4a71df50 3614{
e6c15b5f 3615 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
290b8348
SR		 3616 u8 tos;
3617
290b8348
SR		 3618 switch (card->qdio.do_prio_queueing) {
3619 case QETH_PRIO_Q_ING_TOS:
3620 case QETH_PRIO_Q_ING_PREC:
73dc2daf 3621 switch (qeth_get_ip_version(skb)) {
290b8348
SR		 3622 case 4:
3623 tos = ipv4_get_dsfield(ip_hdr(skb));
3624 break;
3625 case 6:
3626 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3627 break;
3628 default:
3629 return card->qdio.default_out_queue;
4a71df50 3630 }
290b8348 3631 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
e6c15b5f 3632 return ~tos >> 6 & 3;
290b8348 3633 if (tos & IPTOS_MINCOST)
e6c15b5f 3634 return 3;
290b8348
SR		 3635 if (tos & IPTOS_RELIABILITY)
3636 return 2;
3637 if (tos & IPTOS_THROUGHPUT)
3638 return 1;
3639 if (tos & IPTOS_LOWDELAY)
3640 return 0;
d66cb37e
SR		 3641 break;
3642 case QETH_PRIO_Q_ING_SKB:
3643 if (skb->priority > 5)
3644 return 0;
e6c15b5f 3645 return ~skb->priority >> 1 & 3;
d66cb37e 3646 case QETH_PRIO_Q_ING_VLAN:
e6c15b5f
JW		 3647 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3648 return ~ntohs(veth->h_vlan_TCI) >>
3649 (VLAN_PRIO_SHIFT + 1) & 3;
d66cb37e 3650 break;
4a71df50 3651 default:
290b8348 3652 break;
4a71df50 3653 }
290b8348 3654 return card->qdio.default_out_queue;
4a71df50
FB		 3655}
3656EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3657
2863c613
EC		 3658/**
3659 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3660 * @skb: SKB address
3661 *
3662 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3663 * fragmented part of the SKB. Returns zero for linear SKB.
3664 */
356156b6 3665static int qeth_get_elements_for_frags(struct sk_buff *skb)
271648b4 3666{
2863c613 3667 int cnt, elements = 0;
271648b4
FB		 3668
3669 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
2863c613
EC		 3670 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3671
3672 elements += qeth_get_elements_for_range(
3673 (addr_t)skb_frag_address(frag),
3674 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
271648b4
FB		 3675 }
3676 return elements;
3677}
271648b4 3678
40e6a225
JW		 3679/**
3680 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3681 * to transmit an skb.
3682 * @skb: the skb to operate on.
3683 * @data_offset: skip this part of the skb's linear data
3684 *
3685 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3686 * skb's data (both its linear part and paged fragments).
3687 */
3688unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
ba86ceee
JW		 3689{
3690 unsigned int elements = qeth_get_elements_for_frags(skb);
3691 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3692 addr_t start = (addr_t)skb->data + data_offset;
3693
3694 if (start != end)
3695 elements += qeth_get_elements_for_range(start, end);
3696 return elements;
3697}
40e6a225 3698EXPORT_SYMBOL_GPL(qeth_count_elements);
4a71df50 3699
e517b649
JW		 3700#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3701 MAX_TCP_HEADER)
55494264 3702
0d6f02d3 3703/**
ba86ceee
JW		 3704 * qeth_add_hw_header() - add a HW header to an skb.
3705 * @skb: skb that the HW header should be added to.
0d6f02d3
JW		 3706 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3707 * it contains a valid pointer to a qeth_hdr.
a7c2f4a3
JW		 3708 * @hdr_len: length of the HW header.
3709 * @proto_len: length of protocol headers that need to be in same page as the
3710 * HW header.
0d6f02d3
JW		 3711 *
3712 * Returns the pushed length. If the header can't be pushed on
3713 * (eg. because it would cross a page boundary), it is allocated from
3714 * the cache instead and 0 is returned.
ba86ceee 3715 * The number of needed buffer elements is returned in @elements.
0d6f02d3
JW		 3716 * Error to create the hdr is indicated by returning with < 0.
3717 */
b0abc4f5
JW		 3718static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3719 struct sk_buff *skb, struct qeth_hdr **hdr,
3720 unsigned int hdr_len, unsigned int proto_len,
3721 unsigned int *elements)
ba86ceee 3722{
a7c2f4a3 3723 const unsigned int contiguous = proto_len ? proto_len : 1;
4e26c5fe 3724 const unsigned int max_elements = queue->max_elements;
ba86ceee
JW		 3725 unsigned int __elements;
3726 addr_t start, end;
3727 bool push_ok;
3728 int rc;
3729
3730check_layout:
a7c2f4a3 3731 start = (addr_t)skb->data - hdr_len;
ba86ceee
JW		 3732 end = (addr_t)skb->data;
3733
a7c2f4a3 3734 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
ba86ceee
JW		 3735 /* Push HW header into same page as first protocol header. */
3736 push_ok = true;
e517b649
JW		 3737 /* ... but TSO always needs a separate element for headers: */
3738 if (skb_is_gso(skb))
3739 __elements = 1 + qeth_count_elements(skb, proto_len);
3740 else
3741 __elements = qeth_count_elements(skb, 0);
4e2fe4ed
JW		 3742 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3743 /* Push HW header into preceding page, flush with skb->data. */
a7c2f4a3 3744 push_ok = true;
ba86ceee 3745 __elements = 1 + qeth_count_elements(skb, 0);
a7c2f4a3
JW		 3746 } else {
3747 /* Use header cache, copy protocol headers up. */
3748 push_ok = false;
3749 __elements = 1 + qeth_count_elements(skb, proto_len);
ba86ceee
JW		 3750 }
3751
3752 /* Compress skb to fit into one IO buffer: */
3753 if (__elements > max_elements) {
3754 if (!skb_is_nonlinear(skb)) {
3755 /* Drop it, no easy way of shrinking it further. */
3756 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3757 max_elements, __elements, skb->len);
3758 return -E2BIG;
3759 }
3760
3761 rc = skb_linearize(skb);
b0abc4f5
JW		 3762 if (rc) {
3763 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
ba86ceee 3764 return rc;
b0abc4f5 3765 }
ba86ceee 3766
b0abc4f5 3767 QETH_TXQ_STAT_INC(queue, skbs_linearized);
ba86ceee
JW		 3768 /* Linearization changed the layout, re-evaluate: */
3769 goto check_layout;
3770 }
3771
3772 *elements = __elements;
3773 /* Add the header: */
3774 if (push_ok) {
a7c2f4a3
JW		 3775 *hdr = skb_push(skb, hdr_len);
3776 return hdr_len;
0d6f02d3
JW		 3777 }
3778 /* fall back */
55494264
JW		 3779 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3780 return -E2BIG;
0d6f02d3
JW		 3781 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3782 if (!*hdr)
3783 return -ENOMEM;
a7c2f4a3
JW		 3784 /* Copy protocol headers behind HW header: */
3785 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
0d6f02d3
JW		 3786 return 0;
3787}
0d6f02d3 3788
cef6ff22
JW		 3789static void __qeth_fill_buffer(struct sk_buff *skb,
3790 struct qeth_qdio_out_buffer *buf,
3791 bool is_first_elem, unsigned int offset)
4a71df50 3792{
384d2ef1
JW		 3793 struct qdio_buffer *buffer = buf->buffer;
3794 int element = buf->next_element_to_fill;
cc309f83
JW		 3795 int length = skb_headlen(skb) - offset;
3796 char *data = skb->data + offset;
4e2fe4ed 3797 unsigned int elem_length, cnt;
4a71df50 3798
cc309f83 3799 /* map linear part into buffer element(s) */
4a71df50 3800 while (length > 0) {
4e2fe4ed
JW		 3801 elem_length = min_t(unsigned int, length,
3802 PAGE_SIZE - offset_in_page(data));
4a71df50
FB		 3803
3804 buffer->element[element].addr = data;
4e2fe4ed
JW		 3805 buffer->element[element].length = elem_length;
3806 length -= elem_length;
384d2ef1
JW		 3807 if (is_first_elem) {
3808 is_first_elem = false;
5258830b
JW		 3809 if (length || skb_is_nonlinear(skb))
3810 /* skb needs additional elements */
3ec90878 3811 buffer->element[element].eflags =
5258830b 3812 SBAL_EFLAGS_FIRST_FRAG;
4a71df50 3813 else
5258830b
JW		 3814 buffer->element[element].eflags = 0;
3815 } else {
3816 buffer->element[element].eflags =
3817 SBAL_EFLAGS_MIDDLE_FRAG;
4a71df50 3818 }
4e2fe4ed
JW		 3819
3820 data += elem_length;
4a71df50 3821 element++;
4a71df50 3822 }
51aa165c 3823
cc309f83 3824 /* map page frags into buffer element(s) */
51aa165c 3825 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
f8eb4930
JW		 3826 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3827
3828 data = skb_frag_address(frag);
3829 length = skb_frag_size(frag);
271648b4 3830 while (length > 0) {
4e2fe4ed
JW		 3831 elem_length = min_t(unsigned int, length,
3832 PAGE_SIZE - offset_in_page(data));
271648b4
FB		 3833
3834 buffer->element[element].addr = data;
4e2fe4ed 3835 buffer->element[element].length = elem_length;
271648b4
FB		 3836 buffer->element[element].eflags =
3837 SBAL_EFLAGS_MIDDLE_FRAG;
4e2fe4ed
JW		 3838
3839 length -= elem_length;
3840 data += elem_length;
271648b4
FB		 3841 element++;
3842 }
51aa165c
FB		 3843 }
3844
3ec90878
JG		 3845 if (buffer->element[element - 1].eflags)
3846 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
384d2ef1 3847 buf->next_element_to_fill = element;
4a71df50
FB		 3848}
3849
eaf3cc08
JW		 3850/**
3851 * qeth_fill_buffer() - map skb into an output buffer
3852 * @queue: QDIO queue to submit the buffer on
3853 * @buf: buffer to transport the skb
3854 * @skb: skb to map into the buffer
3855 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3856 * from qeth_core_header_cache.
3857 * @offset: when mapping the skb, start at skb->data + offset
3858 * @hd_len: if > 0, build a dedicated header element of this size
54a50941 3859 * flush: Prepare the buffer to be flushed, regardless of its fill level.
eaf3cc08 3860 */
cef6ff22
JW		 3861static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3862 struct qeth_qdio_out_buffer *buf,
3863 struct sk_buff *skb, struct qeth_hdr *hdr,
54a50941
JW		 3864 unsigned int offset, unsigned int hd_len,
3865 bool flush)
4a71df50 3866{
eaf3cc08 3867 struct qdio_buffer *buffer = buf->buffer;
384d2ef1 3868 bool is_first_elem = true;
4a71df50 3869
dc149e37 3870 __skb_queue_tail(&buf->skb_list, skb);
4a71df50 3871
eaf3cc08
JW		 3872 /* build dedicated header element */
3873 if (hd_len) {
683d718a 3874 int element = buf->next_element_to_fill;
384d2ef1
JW		 3875 is_first_elem = false;
3876
683d718a 3877 buffer->element[element].addr = hdr;
f1588177 3878 buffer->element[element].length = hd_len;
3ec90878 3879 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
eaf3cc08
JW		 3880 /* remember to free cache-allocated qeth_hdr: */
3881 buf->is_header[element] = ((void *)hdr != skb->data);
683d718a
FB		 3882 buf->next_element_to_fill++;
3883 }
3884
384d2ef1 3885 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4a71df50
FB		 3886
3887 if (!queue->do_pack) {
847a50fd 3888 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4a71df50 3889 } else {
847a50fd 3890 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
f72b4644 3891
b0abc4f5 3892 QETH_TXQ_STAT_INC(queue, skbs_pack);
f72b4644 3893 /* If the buffer still has free elements, keep using it. */
4e26c5fe
JW		 3894 if (!flush &&
3895 buf->next_element_to_fill < queue->max_elements)
f72b4644 3896 return 0;
4a71df50 3897 }
f72b4644
JW		 3898
3899 /* flush out the buffer */
3900 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3901 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3902 QDIO_MAX_BUFFERS_PER_Q;
3903 return 1;
4a71df50
FB		 3904}
3905
81ec5439
JW		 3906static int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue,
3907 struct sk_buff *skb, struct qeth_hdr *hdr,
3908 unsigned int offset, unsigned int hd_len)
4a71df50 3909{
7c2e9ba3
JW		 3910 int index = queue->next_buf_to_fill;
3911 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
54a50941
JW		 3912 struct netdev_queue *txq;
3913 bool stopped = false;
4a71df50 3914
54a50941
JW		 3915 /* Just a sanity check, the wake/stop logic should ensure that we always
3916 * get a free buffer.
4a71df50
FB		 3917 */
3918 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
7c2e9ba3 3919 return -EBUSY;
54a50941
JW		 3920
3921 txq = netdev_get_tx_queue(queue->card->dev, skb_get_queue_mapping(skb));
3922
3923 if (atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3924 /* If a TX completion happens right _here_ and misses to wake
3925 * the txq, then our re-check below will catch the race.
3926 */
3927 QETH_TXQ_STAT_INC(queue, stopped);
3928 netif_tx_stop_queue(txq);
3929 stopped = true;
3930 }
3931
3932 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len, stopped);
64ef8957 3933 qeth_flush_buffers(queue, index, 1);
54a50941
JW		 3934
3935 if (stopped && !qeth_out_queue_is_full(queue))
3936 netif_tx_start_queue(txq);
4a71df50 3937 return 0;
4a71df50 3938}
4a71df50
FB		 3939
3940int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
13ddacb5 3941 struct sk_buff *skb, struct qeth_hdr *hdr,
9c3bfda9
JW		 3942 unsigned int offset, unsigned int hd_len,
3943 int elements_needed)
4a71df50
FB		 3944{
3945 struct qeth_qdio_out_buffer *buffer;
54a50941
JW		 3946 struct netdev_queue *txq;
3947 bool stopped = false;
4a71df50
FB		 3948 int start_index;
3949 int flush_count = 0;
3950 int do_pack = 0;
3951 int tmp;
3952 int rc = 0;
3953
4a71df50
FB		 3954 /* spin until we get the queue ... */
3955 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3956 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3957 start_index = queue->next_buf_to_fill;
0da9581d 3958 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 3959
3960 /* Just a sanity check, the wake/stop logic should ensure that we always
3961 * get a free buffer.
4a71df50
FB		 3962 */
3963 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3964 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3965 return -EBUSY;
3966 }
54a50941
JW		 3967
3968 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3969
4a71df50
FB		 3970 /* check if we need to switch packing state of this queue */
3971 qeth_switch_to_packing_if_needed(queue);
3972 if (queue->do_pack) {
3973 do_pack = 1;
64ef8957 3974 /* does packet fit in current buffer? */
4e26c5fe
JW		 3975 if (buffer->next_element_to_fill + elements_needed >
3976 queue->max_elements) {
64ef8957
FB		 3977 /* ... no -> set state PRIMED */
3978 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3979 flush_count++;
3980 queue->next_buf_to_fill =
3981 (queue->next_buf_to_fill + 1) %
3982 QDIO_MAX_BUFFERS_PER_Q;
0da9581d 3983 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 3984
3985 /* We stepped forward, so sanity-check again: */
64ef8957
FB		 3986 if (atomic_read(&buffer->state) !=
3987 QETH_QDIO_BUF_EMPTY) {
3988 qeth_flush_buffers(queue, start_index,
779e6e1c 3989 flush_count);
64ef8957 3990 atomic_set(&queue->state,
4a71df50 3991 QETH_OUT_Q_UNLOCKED);
3cdc8a25
JW		 3992 rc = -EBUSY;
3993 goto out;
4a71df50
FB		 3994 }
3995 }
3996 }
f72b4644 3997
54a50941
JW		 3998 if (buffer->next_element_to_fill == 0 &&
3999 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4000 /* If a TX completion happens right _here_ and misses to wake
4001 * the txq, then our re-check below will catch the race.
4002 */
4003 QETH_TXQ_STAT_INC(queue, stopped);
4004 netif_tx_stop_queue(txq);
4005 stopped = true;
4006 }
4007
4008 flush_count += qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len,
4009 stopped);
4a71df50 4010 if (flush_count)
779e6e1c 4011 qeth_flush_buffers(queue, start_index, flush_count);
4a71df50
FB		 4012 else if (!atomic_read(&queue->set_pci_flags_count))
4013 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4014 /*
4015 * queue->state will go from LOCKED -> UNLOCKED or from
4016 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4017 * (switch packing state or flush buffer to get another pci flag out).
4018 * In that case we will enter this loop
4019 */
4020 while (atomic_dec_return(&queue->state)) {
4a71df50
FB		 4021 start_index = queue->next_buf_to_fill;
4022 /* check if we can go back to non-packing state */
3cdc8a25 4023 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4a71df50
FB		 4024 /*
4025 * check if we need to flush a packing buffer to get a pci
4026 * flag out on the queue
4027 */
3cdc8a25
JW		 4028 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4029 tmp = qeth_prep_flush_pack_buffer(queue);
4030 if (tmp) {
4031 qeth_flush_buffers(queue, start_index, tmp);
4032 flush_count += tmp;
4033 }
4a71df50 4034 }
3cdc8a25 4035out:
4a71df50 4036 /* at this point the queue is UNLOCKED again */
b0abc4f5
JW		 4037 if (do_pack)
4038 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4a71df50 4039
54a50941
JW		 4040 if (stopped && !qeth_out_queue_is_full(queue))
4041 netif_tx_start_queue(txq);
4a71df50
FB		 4042 return rc;
4043}
4044EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4045
81ec5439
JW		 4046static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4047 unsigned int payload_len, struct sk_buff *skb,
4048 unsigned int proto_len)
82bf5c08
JW		 4049{
4050 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4051
4052 ext->hdr_tot_len = sizeof(*ext);
4053 ext->imb_hdr_no = 1;
4054 ext->hdr_type = 1;
4055 ext->hdr_version = 1;
4056 ext->hdr_len = 28;
4057 ext->payload_len = payload_len;
4058 ext->mss = skb_shinfo(skb)->gso_size;
4059 ext->dg_hdr_len = proto_len;
4060}
82bf5c08 4061
fc69660b
JW		 4062int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4063 struct qeth_qdio_out_q *queue, int ipv, int cast_type,
b0abc4f5
JW		 4064 void (*fill_header)(struct qeth_qdio_out_q *queue,
4065 struct qeth_hdr *hdr, struct sk_buff *skb,
4066 int ipv, int cast_type,
fc69660b
JW		 4067 unsigned int data_len))
4068{
82bf5c08 4069 unsigned int proto_len, hw_hdr_len;
fc69660b 4070 unsigned int frame_len = skb->len;
82bf5c08 4071 bool is_tso = skb_is_gso(skb);
fc69660b
JW		 4072 unsigned int data_offset = 0;
4073 struct qeth_hdr *hdr = NULL;
4074 unsigned int hd_len = 0;
4075 unsigned int elements;
4076 int push_len, rc;
4077 bool is_sg;
4078
82bf5c08
JW		 4079 if (is_tso) {
4080 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4081 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4082 } else {
4083 hw_hdr_len = sizeof(struct qeth_hdr);
81ec5439 4084 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
82bf5c08
JW		 4085 }
4086
fc69660b
JW		 4087 rc = skb_cow_head(skb, hw_hdr_len);
4088 if (rc)
4089 return rc;
4090
b0abc4f5 4091 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
fc69660b
JW		 4092 &elements);
4093 if (push_len < 0)
4094 return push_len;
82bf5c08 4095 if (is_tso || !push_len) {
fc69660b
JW		 4096 /* HW header needs its own buffer element. */
4097 hd_len = hw_hdr_len + proto_len;
82bf5c08 4098 data_offset = push_len + proto_len;
fc69660b 4099 }
e517b649 4100 memset(hdr, 0, hw_hdr_len);
b0abc4f5 4101 fill_header(queue, hdr, skb, ipv, cast_type, frame_len);
82bf5c08
JW		 4102 if (is_tso)
4103 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4104 frame_len - proto_len, skb, proto_len);
fc69660b
JW		 4105
4106 is_sg = skb_is_nonlinear(skb);
4107 if (IS_IQD(card)) {
4108 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
4109 hd_len);
4110 } else {
4111 /* TODO: drop skb_orphan() once TX completion is fast enough */
4112 skb_orphan(skb);
4113 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4114 hd_len, elements);
4115 }
4116
4117 if (!rc) {
b0abc4f5
JW		 4118 QETH_TXQ_STAT_ADD(queue, buf_elements, elements);
4119 if (is_sg)
4120 QETH_TXQ_STAT_INC(queue, skbs_sg);
4121 if (is_tso) {
4122 QETH_TXQ_STAT_INC(queue, skbs_tso);
4123 QETH_TXQ_STAT_ADD(queue, tso_bytes, frame_len);
fc69660b
JW		 4124 }
4125 } else {
4126 if (!push_len)
4127 kmem_cache_free(qeth_core_header_cache, hdr);
fc69660b
JW		 4128 }
4129 return rc;
4130}
4131EXPORT_SYMBOL_GPL(qeth_xmit);
4132
4a71df50
FB		 4133static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4134 struct qeth_reply *reply, unsigned long data)
4135{
686c97ee 4136 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50
FB		 4137 struct qeth_ipacmd_setadpparms *setparms;
4138
847a50fd 4139 QETH_CARD_TEXT(card, 4, "prmadpcb");
4a71df50 4140
4a71df50 4141 setparms = &(cmd->data.setadapterparms);
686c97ee 4142 if (qeth_setadpparms_inspect_rc(cmd)) {
8a593148 4143 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4a71df50
FB		 4144 setparms->data.mode = SET_PROMISC_MODE_OFF;
4145 }
4146 card->info.promisc_mode = setparms->data.mode;
742d4d40 4147 return (cmd->hdr.return_code) ? -EIO : 0;
4a71df50
FB		 4148}
4149
4150void qeth_setadp_promisc_mode(struct qeth_card *card)
4151{
4152 enum qeth_ipa_promisc_modes mode;
4153 struct net_device *dev = card->dev;
4154 struct qeth_cmd_buffer *iob;
4155 struct qeth_ipa_cmd *cmd;
4156
847a50fd 4157 QETH_CARD_TEXT(card, 4, "setprom");
4a71df50
FB		 4158
4159 if (((dev->flags & IFF_PROMISC) &&
4160 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4161 (!(dev->flags & IFF_PROMISC) &&
4162 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4163 return;
4164 mode = SET_PROMISC_MODE_OFF;
4165 if (dev->flags & IFF_PROMISC)
4166 mode = SET_PROMISC_MODE_ON;
847a50fd 4167 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4a71df50
FB		 4168
4169 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
b9150461 4170 SETADP_DATA_SIZEOF(mode));
1aec42bc
TR		 4171 if (!iob)
4172 return;
ff5caa7a 4173 cmd = __ipa_cmd(iob);
4a71df50
FB		 4174 cmd->data.setadapterparms.data.mode = mode;
4175 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4176}
4177EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4178
4a71df50
FB		 4179static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4180 struct qeth_reply *reply, unsigned long data)
4181{
686c97ee 4182 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b144b99f 4183 struct qeth_ipacmd_setadpparms *adp_cmd;
4a71df50 4184
847a50fd 4185 QETH_CARD_TEXT(card, 4, "chgmaccb");
686c97ee 4186 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4187 return -EIO;
4a71df50 4188
b144b99f 4189 adp_cmd = &cmd->data.setadapterparms;
4b7ae122
JW		 4190 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4191 return -EADDRNOTAVAIL;
4192
b144b99f
JW		 4193 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4194 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4b7ae122 4195 return -EADDRNOTAVAIL;
b144b99f
JW		 4196
4197 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4a71df50
FB		 4198 return 0;
4199}
4200
4201int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4202{
4203 int rc;
4204 struct qeth_cmd_buffer *iob;
4205 struct qeth_ipa_cmd *cmd;
4206
847a50fd 4207 QETH_CARD_TEXT(card, 4, "chgmac");
4a71df50
FB		 4208
4209 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
b9150461 4210 SETADP_DATA_SIZEOF(change_addr));
1aec42bc
TR		 4211 if (!iob)
4212 return -ENOMEM;
ff5caa7a 4213 cmd = __ipa_cmd(iob);
4a71df50 4214 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
99f0b85d
JW		 4215 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4216 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4217 card->dev->dev_addr);
4a71df50
FB		 4218 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4219 NULL);
4220 return rc;
4221}
4222EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4223
d64ecc22
EL		 4224static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4225 struct qeth_reply *reply, unsigned long data)
4226{
686c97ee 4227 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
d64ecc22 4228 struct qeth_set_access_ctrl *access_ctrl_req;
0f54761d 4229 int fallback = *(int *)reply->param;
d64ecc22 4230
847a50fd 4231 QETH_CARD_TEXT(card, 4, "setaccb");
686c97ee 4232 if (cmd->hdr.return_code)
742d4d40 4233 return -EIO;
686c97ee 4234 qeth_setadpparms_inspect_rc(cmd);
d64ecc22 4235
d64ecc22 4236 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
57a688aa
JW		 4237 QETH_CARD_TEXT_(card, 2, "rc=%d",
4238 cmd->data.setadapterparms.hdr.return_code);
0f54761d
SR		 4239 if (cmd->data.setadapterparms.hdr.return_code !=
4240 SET_ACCESS_CTRL_RC_SUCCESS)
e19e5be8
JW		 4241 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4242 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4243 cmd->data.setadapterparms.hdr.return_code);
d64ecc22
EL		 4244 switch (cmd->data.setadapterparms.hdr.return_code) {
4245 case SET_ACCESS_CTRL_RC_SUCCESS:
d64ecc22
EL		 4246 if (card->options.isolation == ISOLATION_MODE_NONE) {
4247 dev_info(&card->gdev->dev,
4248 "QDIO data connection isolation is deactivated\n");
4249 } else {
4250 dev_info(&card->gdev->dev,
4251 "QDIO data connection isolation is activated\n");
4252 }
d64ecc22 4253 break;
0f54761d 4254 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
e19e5be8
JW		 4255 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4256 CARD_DEVID(card));
0f54761d
SR		 4257 if (fallback)
4258 card->options.isolation = card->options.prev_isolation;
4259 break;
4260 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
e19e5be8
JW		 4261 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4262 CARD_DEVID(card));
0f54761d
SR		 4263 if (fallback)
4264 card->options.isolation = card->options.prev_isolation;
4265 break;
d64ecc22 4266 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
d64ecc22
EL		 4267 dev_err(&card->gdev->dev, "Adapter does not "
4268 "support QDIO data connection isolation\n");
d64ecc22 4269 break;
d64ecc22 4270 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
d64ecc22
EL		 4271 dev_err(&card->gdev->dev,
4272 "Adapter is dedicated. "
4273 "QDIO data connection isolation not supported\n");
0f54761d
SR		 4274 if (fallback)
4275 card->options.isolation = card->options.prev_isolation;
d64ecc22 4276 break;
d64ecc22 4277 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
d64ecc22
EL		 4278 dev_err(&card->gdev->dev,
4279 "TSO does not permit QDIO data connection isolation\n");
0f54761d
SR		 4280 if (fallback)
4281 card->options.isolation = card->options.prev_isolation;
4282 break;
4283 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4284 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4285 "support reflective relay mode\n");
4286 if (fallback)
4287 card->options.isolation = card->options.prev_isolation;
4288 break;
4289 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4290 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4291 "enabled at the adjacent switch port");
4292 if (fallback)
4293 card->options.isolation = card->options.prev_isolation;
4294 break;
4295 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4296 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4297 "at the adjacent switch failed\n");
d64ecc22 4298 break;
d64ecc22 4299 default:
d64ecc22 4300 /* this should never happen */
0f54761d
SR		 4301 if (fallback)
4302 card->options.isolation = card->options.prev_isolation;
d64ecc22
EL		 4303 break;
4304 }
742d4d40 4305 return (cmd->hdr.return_code) ? -EIO : 0;
d64ecc22
EL		 4306}
4307
4308static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
0f54761d 4309 enum qeth_ipa_isolation_modes isolation, int fallback)
d64ecc22
EL		 4310{
4311 int rc;
4312 struct qeth_cmd_buffer *iob;
4313 struct qeth_ipa_cmd *cmd;
4314 struct qeth_set_access_ctrl *access_ctrl_req;
4315
847a50fd 4316 QETH_CARD_TEXT(card, 4, "setacctl");
d64ecc22 4317
d64ecc22 4318 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
b9150461 4319 SETADP_DATA_SIZEOF(set_access_ctrl));
1aec42bc
TR		 4320 if (!iob)
4321 return -ENOMEM;
ff5caa7a 4322 cmd = __ipa_cmd(iob);
d64ecc22
EL		 4323 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4324 access_ctrl_req->subcmd_code = isolation;
4325
4326 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
0f54761d 4327 &fallback);
57a688aa 4328 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
d64ecc22
EL		 4329 return rc;
4330}
4331
0f54761d 4332int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
d64ecc22
EL		 4333{
4334 int rc = 0;
4335
847a50fd 4336 QETH_CARD_TEXT(card, 4, "setactlo");
d64ecc22 4337
379ac99e
JW		 4338 if ((IS_OSD(card) || IS_OSX(card)) &&
4339 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
d64ecc22 4340 rc = qeth_setadpparms_set_access_ctrl(card,
0f54761d 4341 card->options.isolation, fallback);
d64ecc22 4342 if (rc) {
e19e5be8
JW		 4343 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4344 rc, CARD_DEVID(card));
0f54761d 4345 rc = -EOPNOTSUPP;
d64ecc22
EL		 4346 }
4347 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4348 card->options.isolation = ISOLATION_MODE_NONE;
4349
4350 dev_err(&card->gdev->dev, "Adapter does not "
4351 "support QDIO data connection isolation\n");
4352 rc = -EOPNOTSUPP;
4353 }
4354 return rc;
4355}
4356EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4357
4a71df50
FB		 4358void qeth_tx_timeout(struct net_device *dev)
4359{
4360 struct qeth_card *card;
4361
509e2562 4362 card = dev->ml_priv;
847a50fd 4363 QETH_CARD_TEXT(card, 4, "txtimeo");
4a71df50
FB		 4364 qeth_schedule_recovery(card);
4365}
4366EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4367
942d6984 4368static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4a71df50 4369{
509e2562 4370 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 4371 int rc = 0;
4372
4373 switch (regnum) {
4374 case MII_BMCR: /* Basic mode control register */
4375 rc = BMCR_FULLDPLX;
4376 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4377 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
54e049c2
JW		 4378 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4379 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4a71df50
FB		 4380 rc |= BMCR_SPEED100;
4381 break;
4382 case MII_BMSR: /* Basic mode status register */
4383 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4384 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4385 BMSR_100BASE4;
4386 break;
4387 case MII_PHYSID1: /* PHYS ID 1 */
4388 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4389 dev->dev_addr[2];
4390 rc = (rc >> 5) & 0xFFFF;
4391 break;
4392 case MII_PHYSID2: /* PHYS ID 2 */
4393 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4394 break;
4395 case MII_ADVERTISE: /* Advertisement control reg */
4396 rc = ADVERTISE_ALL;
4397 break;
4398 case MII_LPA: /* Link partner ability reg */
4399 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4400 LPA_100BASE4 | LPA_LPACK;
4401 break;
4402 case MII_EXPANSION: /* Expansion register */
4403 break;
4404 case MII_DCOUNTER: /* disconnect counter */
4405 break;
4406 case MII_FCSCOUNTER: /* false carrier counter */
4407 break;
4408 case MII_NWAYTEST: /* N-way auto-neg test register */
4409 break;
4410 case MII_RERRCOUNTER: /* rx error counter */
4411 rc = card->stats.rx_errors;
4412 break;
4413 case MII_SREVISION: /* silicon revision */
4414 break;
4415 case MII_RESV1: /* reserved 1 */
4416 break;
4417 case MII_LBRERROR: /* loopback, rx, bypass error */
4418 break;
4419 case MII_PHYADDR: /* physical address */
4420 break;
4421 case MII_RESV2: /* reserved 2 */
4422 break;
4423 case MII_TPISTATUS: /* TPI status for 10mbps */
4424 break;
4425 case MII_NCONFIG: /* network interface config */
4426 break;
4427 default:
4428 break;
4429 }
4430 return rc;
4431}
4a71df50 4432
4a71df50
FB		 4433static int qeth_snmp_command_cb(struct qeth_card *card,
4434 struct qeth_reply *reply, unsigned long sdata)
4435{
4436 struct qeth_ipa_cmd *cmd;
4437 struct qeth_arp_query_info *qinfo;
4a71df50 4438 unsigned char *data;
9a764c1e 4439 void *snmp_data;
4a71df50
FB		 4440 __u16 data_len;
4441
847a50fd 4442 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4a71df50
FB		 4443
4444 cmd = (struct qeth_ipa_cmd *) sdata;
4445 data = (unsigned char *)((char *)cmd - reply->offset);
4446 qinfo = (struct qeth_arp_query_info *) reply->param;
4a71df50
FB		 4447
4448 if (cmd->hdr.return_code) {
8a593148 4449 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4b7ae122 4450 return -EIO;
4a71df50
FB		 4451 }
4452 if (cmd->data.setadapterparms.hdr.return_code) {
4453 cmd->hdr.return_code =
4454 cmd->data.setadapterparms.hdr.return_code;
8a593148 4455 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4b7ae122 4456 return -EIO;
4a71df50
FB		 4457 }
4458 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
9a764c1e
JW		 4459 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4460 snmp_data = &cmd->data.setadapterparms.data.snmp;
4461 data_len -= offsetof(struct qeth_ipa_cmd,
4462 data.setadapterparms.data.snmp);
4463 } else {
4464 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4465 data_len -= offsetof(struct qeth_ipa_cmd,
4466 data.setadapterparms.data.snmp.request);
4467 }
4a71df50
FB		 4468
4469 /* check if there is enough room in userspace */
4470 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4b7ae122
JW		 4471 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4472 return -ENOSPC;
4a71df50 4473 }
847a50fd 4474 QETH_CARD_TEXT_(card, 4, "snore%i",
4a71df50 4475 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4476 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4a71df50
FB		 4477 cmd->data.setadapterparms.hdr.seq_no);
4478 /*copy entries to user buffer*/
9a764c1e 4479 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4a71df50 4480 qinfo->udata_offset += data_len;
9a764c1e 4481
4a71df50 4482 /* check if all replies received ... */
847a50fd 4483 QETH_CARD_TEXT_(card, 4, "srtot%i",
4a71df50 4484 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4485 QETH_CARD_TEXT_(card, 4, "srseq%i",
4a71df50
FB		 4486 cmd->data.setadapterparms.hdr.seq_no);
4487 if (cmd->data.setadapterparms.hdr.seq_no <
4488 cmd->data.setadapterparms.hdr.used_total)
4489 return 1;
4490 return 0;
4491}
4492
942d6984 4493static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4a71df50
FB		 4494{
4495 struct qeth_cmd_buffer *iob;
4496 struct qeth_ipa_cmd *cmd;
4497 struct qeth_snmp_ureq *ureq;
6fb392b1 4498 unsigned int req_len;
4a71df50
FB		 4499 struct qeth_arp_query_info qinfo = {0, };
4500 int rc = 0;
4501
847a50fd 4502 QETH_CARD_TEXT(card, 3, "snmpcmd");
4a71df50 4503
379ac99e 4504 if (IS_VM_NIC(card))
4a71df50
FB		 4505 return -EOPNOTSUPP;
4506
4507 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4fda3354 4508 IS_LAYER3(card))
4a71df50 4509 return -EOPNOTSUPP;
4fda3354 4510
4a71df50
FB		 4511 /* skip 4 bytes (data_len struct member) to get req_len */
4512 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4513 return -EFAULT;
b9150461
JW		 4514 if (req_len + offsetof(struct qeth_ipacmd_setadpparms, data) +
4515 offsetof(struct qeth_ipa_cmd, data) + IPA_PDU_HEADER_SIZE >
4516 QETH_BUFSIZE)
6fb392b1 4517 return -EINVAL;
4986f3f0
JL		 4518 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4519 if (IS_ERR(ureq)) {
847a50fd 4520 QETH_CARD_TEXT(card, 2, "snmpnome");
4986f3f0 4521 return PTR_ERR(ureq);
4a71df50
FB		 4522 }
4523 qinfo.udata_len = ureq->hdr.data_len;
4524 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4525 if (!qinfo.udata) {
4526 kfree(ureq);
4527 return -ENOMEM;
4528 }
4529 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4530
b9150461 4531 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
1aec42bc
TR		 4532 if (!iob) {
4533 rc = -ENOMEM;
4534 goto out;
4535 }
c2153277 4536
ff5caa7a 4537 cmd = __ipa_cmd(iob);
4a71df50 4538 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
c2153277 4539 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4a71df50 4540 if (rc)
e19e5be8
JW		 4541 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4542 CARD_DEVID(card), rc);
4a71df50
FB		 4543 else {
4544 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4545 rc = -EFAULT;
4546 }
1aec42bc 4547out:
4a71df50
FB		 4548 kfree(ureq);
4549 kfree(qinfo.udata);
4550 return rc;
4551}
4a71df50 4552
c3ab96f3
FB		 4553static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4554 struct qeth_reply *reply, unsigned long data)
4555{
686c97ee 4556 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
c3ab96f3
FB		 4557 struct qeth_qoat_priv *priv;
4558 char *resdata;
4559 int resdatalen;
4560
4561 QETH_CARD_TEXT(card, 3, "qoatcb");
686c97ee 4562 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4563 return -EIO;
c3ab96f3 4564
c3ab96f3
FB		 4565 priv = (struct qeth_qoat_priv *)reply->param;
4566 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4567 resdata = (char *)data + 28;
4568
4b7ae122
JW		 4569 if (resdatalen > (priv->buffer_len - priv->response_len))
4570 return -ENOSPC;
c3ab96f3
FB		 4571
4572 memcpy((priv->buffer + priv->response_len), resdata,
4573 resdatalen);
4574 priv->response_len += resdatalen;
4575
4576 if (cmd->data.setadapterparms.hdr.seq_no <
4577 cmd->data.setadapterparms.hdr.used_total)
4578 return 1;
4579 return 0;
4580}
4581
942d6984 4582static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
c3ab96f3
FB		 4583{
4584 int rc = 0;
4585 struct qeth_cmd_buffer *iob;
4586 struct qeth_ipa_cmd *cmd;
4587 struct qeth_query_oat *oat_req;
4588 struct qeth_query_oat_data oat_data;
4589 struct qeth_qoat_priv priv;
4590 void __user *tmp;
4591
4592 QETH_CARD_TEXT(card, 3, "qoatcmd");
4593
4594 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4595 rc = -EOPNOTSUPP;
4596 goto out;
4597 }
4598
4599 if (copy_from_user(&oat_data, udata,
4600 sizeof(struct qeth_query_oat_data))) {
4601 rc = -EFAULT;
4602 goto out;
4603 }
4604
4605 priv.buffer_len = oat_data.buffer_len;
4606 priv.response_len = 0;
aec45e85 4607 priv.buffer = vzalloc(oat_data.buffer_len);
c3ab96f3
FB		 4608 if (!priv.buffer) {
4609 rc = -ENOMEM;
4610 goto out;
4611 }
4612
4613 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
b9150461 4614 SETADP_DATA_SIZEOF(query_oat));
1aec42bc
TR		 4615 if (!iob) {
4616 rc = -ENOMEM;
4617 goto out_free;
4618 }
ff5caa7a 4619 cmd = __ipa_cmd(iob);
c3ab96f3
FB		 4620 oat_req = &cmd->data.setadapterparms.data.query_oat;
4621 oat_req->subcmd_code = oat_data.command;
4622
4623 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4624 &priv);
4625 if (!rc) {
4626 if (is_compat_task())
4627 tmp = compat_ptr(oat_data.ptr);
4628 else
4629 tmp = (void __user *)(unsigned long)oat_data.ptr;
4630
4631 if (copy_to_user(tmp, priv.buffer,
4632 priv.response_len)) {
4633 rc = -EFAULT;
4634 goto out_free;
4635 }
4636
4637 oat_data.response_len = priv.response_len;
4638
4639 if (copy_to_user(udata, &oat_data,
4640 sizeof(struct qeth_query_oat_data)))
4641 rc = -EFAULT;
4b7ae122 4642 }
c3ab96f3
FB		 4643
4644out_free:
aec45e85 4645 vfree(priv.buffer);
c3ab96f3
FB		 4646out:
4647 return rc;
4648}
c3ab96f3 4649
e71e4072
HC		 4650static int qeth_query_card_info_cb(struct qeth_card *card,
4651 struct qeth_reply *reply, unsigned long data)
02d5cb5b 4652{
686c97ee
JW		 4653 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4654 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
02d5cb5b 4655 struct qeth_query_card_info *card_info;
02d5cb5b
EC		 4656
4657 QETH_CARD_TEXT(card, 2, "qcrdincb");
686c97ee 4658 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 4659 return -EIO;
02d5cb5b 4660
686c97ee
JW		 4661 card_info = &cmd->data.setadapterparms.data.card_info;
4662 carrier_info->card_type = card_info->card_type;
4663 carrier_info->port_mode = card_info->port_mode;
4664 carrier_info->port_speed = card_info->port_speed;
02d5cb5b
EC		 4665 return 0;
4666}
4667
d896ac62
JW		 4668int qeth_query_card_info(struct qeth_card *card,
4669 struct carrier_info *carrier_info)
02d5cb5b
EC		 4670{
4671 struct qeth_cmd_buffer *iob;
4672
4673 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4674 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4675 return -EOPNOTSUPP;
b9150461 4676 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
1aec42bc
TR		 4677 if (!iob)
4678 return -ENOMEM;
02d5cb5b
EC		 4679 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4680 (void *)carrier_info);
4681}
02d5cb5b 4682
ec61bd2f
JW		 4683/**
4684 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4685 * @card: pointer to a qeth_card
4686 *
4687 * Returns
4688 * 0, if a MAC address has been set for the card's netdevice
4689 * a return code, for various error conditions
4690 */
4691int qeth_vm_request_mac(struct qeth_card *card)
4692{
4693 struct diag26c_mac_resp *response;
4694 struct diag26c_mac_req *request;
4695 struct ccw_dev_id id;
4696 int rc;
4697
57a688aa 4698 QETH_CARD_TEXT(card, 2, "vmreqmac");
ec61bd2f 4699
ec61bd2f
JW		 4700 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4701 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4702 if (!request || !response) {
4703 rc = -ENOMEM;
4704 goto out;
4705 }
4706
46646105 4707 ccw_device_get_id(CARD_DDEV(card), &id);
ec61bd2f
JW		 4708 request->resp_buf_len = sizeof(*response);
4709 request->resp_version = DIAG26C_VERSION2;
4710 request->op_code = DIAG26C_GET_MAC;
4711 request->devno = id.devno;
4712
615dff22 4713 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f 4714 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
615dff22 4715 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f
JW		 4716 if (rc)
4717 goto out;
615dff22 4718 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
ec61bd2f
JW		 4719
4720 if (request->resp_buf_len < sizeof(*response) ||
4721 response->version != request->resp_version) {
4722 rc = -EIO;
57a688aa
JW		 4723 QETH_CARD_TEXT(card, 2, "badresp");
4724 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4725 sizeof(request->resp_buf_len));
ec61bd2f
JW		 4726 } else if (!is_valid_ether_addr(response->mac)) {
4727 rc = -EINVAL;
57a688aa
JW		 4728 QETH_CARD_TEXT(card, 2, "badmac");
4729 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
ec61bd2f
JW		 4730 } else {
4731 ether_addr_copy(card->dev->dev_addr, response->mac);
4732 }
4733
4734out:
4735 kfree(response);
4736 kfree(request);
4737 return rc;
4738}
4739EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4740
d0ff1f52
UB		 4741static void qeth_determine_capabilities(struct qeth_card *card)
4742{
4743 int rc;
d0ff1f52
UB		 4744 struct ccw_device *ddev;
4745 int ddev_offline = 0;
4746
57a688aa 4747 QETH_CARD_TEXT(card, 2, "detcapab");
d0ff1f52
UB		 4748 ddev = CARD_DDEV(card);
4749 if (!ddev->online) {
4750 ddev_offline = 1;
4751 rc = ccw_device_set_online(ddev);
4752 if (rc) {
57a688aa 4753 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
d0ff1f52
UB		 4754 goto out;
4755 }
4756 }
4757
2066e1db 4758 rc = qeth_read_conf_data(card);
d0ff1f52 4759 if (rc) {
e19e5be8
JW		 4760 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4761 CARD_DEVID(card), rc);
57a688aa 4762 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
d0ff1f52
UB		 4763 goto out_offline;
4764 }
d0ff1f52
UB		 4765
4766 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4767 if (rc)
57a688aa 4768 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
d0ff1f52 4769
57a688aa
JW		 4770 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4771 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4772 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4773 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4774 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
0da9581d
EL		 4775 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4776 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4777 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4778 dev_info(&card->gdev->dev,
4779 "Completion Queueing supported\n");
4780 } else {
4781 card->options.cq = QETH_CQ_NOTAVAILABLE;
4782 }
4783
4784
d0ff1f52
UB		 4785out_offline:
4786 if (ddev_offline == 1)
4787 ccw_device_set_offline(ddev);
4788out:
4789 return;
4790}
4791
cef6ff22
JW		 4792static void qeth_qdio_establish_cq(struct qeth_card *card,
4793 struct qdio_buffer **in_sbal_ptrs,
4794 void (**queue_start_poll)
4795 (struct ccw_device *, int,
4796 unsigned long))
4797{
0da9581d
EL		 4798 int i;
4799
4800 if (card->options.cq == QETH_CQ_ENABLED) {
4801 int offset = QDIO_MAX_BUFFERS_PER_Q *
4802 (card->qdio.no_in_queues - 1);
0da9581d
EL		 4803 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4804 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4805 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4806 }
4807
4808 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4809 }
4810}
4811
4a71df50
FB		 4812static int qeth_qdio_establish(struct qeth_card *card)
4813{
4814 struct qdio_initialize init_data;
4815 char *qib_param_field;
4816 struct qdio_buffer **in_sbal_ptrs;
104ea556 4817 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4a71df50
FB		 4818 struct qdio_buffer **out_sbal_ptrs;
4819 int i, j, k;
4820 int rc = 0;
4821
57a688aa 4822 QETH_CARD_TEXT(card, 2, "qdioest");
4a71df50 4823
6396bb22
KC		 4824 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4825 GFP_KERNEL);
104ea556 4826 if (!qib_param_field) {
4827 rc = -ENOMEM;
4828 goto out_free_nothing;
4829 }
4a71df50
FB		 4830
4831 qeth_create_qib_param_field(card, qib_param_field);
4832 qeth_create_qib_param_field_blkt(card, qib_param_field);
4833
6396bb22
KC		 4834 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4835 sizeof(void *),
4a71df50
FB		 4836 GFP_KERNEL);
4837 if (!in_sbal_ptrs) {
104ea556 4838 rc = -ENOMEM;
4839 goto out_free_qib_param;
4a71df50 4840 }
0da9581d 4841 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4a71df50
FB		 4842 in_sbal_ptrs[i] = (struct qdio_buffer *)
4843 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
0da9581d 4844 }
4a71df50 4845
6396bb22 4846 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
0da9581d 4847 GFP_KERNEL);
104ea556 4848 if (!queue_start_poll) {
4849 rc = -ENOMEM;
4850 goto out_free_in_sbals;
4851 }
0da9581d 4852 for (i = 0; i < card->qdio.no_in_queues; ++i)
7bcd64eb 4853 queue_start_poll[i] = qeth_qdio_start_poll;
0da9581d
EL		 4854
4855 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
104ea556 4856
4a71df50 4857 out_sbal_ptrs =
6396bb22
KC		 4858 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4859 sizeof(void *),
4860 GFP_KERNEL);
4a71df50 4861 if (!out_sbal_ptrs) {
104ea556 4862 rc = -ENOMEM;
4863 goto out_free_queue_start_poll;
4a71df50
FB		 4864 }
4865 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4866 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4867 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
0da9581d 4868 card->qdio.out_qs[i]->bufs[j]->buffer);
4a71df50
FB		 4869 }
4870
4871 memset(&init_data, 0, sizeof(struct qdio_initialize));
4872 init_data.cdev = CARD_DDEV(card);
379ac99e
JW		 4873 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4874 QDIO_QETH_QFMT;
4a71df50
FB		 4875 init_data.qib_param_field_format = 0;
4876 init_data.qib_param_field = qib_param_field;
0da9581d 4877 init_data.no_input_qs = card->qdio.no_in_queues;
4a71df50 4878 init_data.no_output_qs = card->qdio.no_out_queues;
7bcd64eb
JW		 4879 init_data.input_handler = qeth_qdio_input_handler;
4880 init_data.output_handler = qeth_qdio_output_handler;
e58b0d90 4881 init_data.queue_start_poll_array = queue_start_poll;
4a71df50 4882 init_data.int_parm = (unsigned long) card;
bdf11767
JW		 4883 init_data.input_sbal_addr_array = in_sbal_ptrs;
4884 init_data.output_sbal_addr_array = out_sbal_ptrs;
0da9581d 4885 init_data.output_sbal_state_array = card->qdio.out_bufstates;
379ac99e 4886 init_data.scan_threshold = IS_IQD(card) ? 1 : 32;
4a71df50
FB		 4887
4888 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4889 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
cc961d40
JG		 4890 rc = qdio_allocate(&init_data);
4891 if (rc) {
4892 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4893 goto out;
4894 }
4895 rc = qdio_establish(&init_data);
4896 if (rc) {
4a71df50 4897 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
cc961d40
JG		 4898 qdio_free(CARD_DDEV(card));
4899 }
4a71df50 4900 }
0da9581d
EL		 4901
4902 switch (card->options.cq) {
4903 case QETH_CQ_ENABLED:
4904 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4905 break;
4906 case QETH_CQ_DISABLED:
4907 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4908 break;
4909 default:
4910 break;
4911 }
cc961d40 4912out:
4a71df50 4913 kfree(out_sbal_ptrs);
104ea556 4914out_free_queue_start_poll:
4915 kfree(queue_start_poll);
4916out_free_in_sbals:
4a71df50 4917 kfree(in_sbal_ptrs);
104ea556 4918out_free_qib_param:
4a71df50 4919 kfree(qib_param_field);
104ea556 4920out_free_nothing:
4a71df50
FB		 4921 return rc;
4922}
4923
4924static void qeth_core_free_card(struct qeth_card *card)
4925{
57a688aa 4926 QETH_CARD_TEXT(card, 2, "freecrd");
4a71df50
FB		 4927 qeth_clean_channel(&card->read);
4928 qeth_clean_channel(&card->write);
f15cdaf2 4929 qeth_clean_channel(&card->data);
d9b9f40b 4930 qeth_release_buffer(card->read_cmd);
c0a2e4d1 4931 destroy_workqueue(card->event_wq);
41c47da3 4932 qeth_free_qdio_queues(card);
6bcac508 4933 unregister_service_level(&card->qeth_service_level);
a2eb0ad5 4934 dev_set_drvdata(&card->gdev->dev, NULL);
4a71df50
FB		 4935 kfree(card);
4936}
4937
395672e0
SR		 4938void qeth_trace_features(struct qeth_card *card)
4939{
4940 QETH_CARD_TEXT(card, 2, "features");
4d7def2a
TR		 4941 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4942 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4943 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4944 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4945 sizeof(card->info.diagass_support));
395672e0
SR		 4946}
4947EXPORT_SYMBOL_GPL(qeth_trace_features);
4948
4a71df50 4949static struct ccw_device_id qeth_ids[] = {
5113fec0
UB		 4950 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4951 .driver_info = QETH_CARD_TYPE_OSD},
4952 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4953 .driver_info = QETH_CARD_TYPE_IQD},
4954 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4955 .driver_info = QETH_CARD_TYPE_OSN},
4956 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4957 .driver_info = QETH_CARD_TYPE_OSM},
4958 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4959 .driver_info = QETH_CARD_TYPE_OSX},
4a71df50
FB		 4960 {},
4961};
4962MODULE_DEVICE_TABLE(ccw, qeth_ids);
4963
4964static struct ccw_driver qeth_ccw_driver = {
3bda058b 4965 .driver = {
3e70b3b8 4966 .owner = THIS_MODULE,
3bda058b
SO		 4967 .name = "qeth",
4968 },
4a71df50
FB		 4969 .ids = qeth_ids,
4970 .probe = ccwgroup_probe_ccwdev,
4971 .remove = ccwgroup_remove_ccwdev,
4972};
4973
9fae5c3b 4974int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4a71df50 4975{
6ebb7f8d 4976 int retries = 3;
4a71df50
FB		 4977 int rc;
4978
57a688aa 4979 QETH_CARD_TEXT(card, 2, "hrdsetup");
4a71df50 4980 atomic_set(&card->force_alloc_skb, 0);
a4cdc9ba
JW		 4981 rc = qeth_update_from_chp_desc(card);
4982 if (rc)
4983 return rc;
4a71df50 4984retry:
6ebb7f8d 4985 if (retries < 3)
e19e5be8
JW		 4986 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4987 CARD_DEVID(card));
379ac99e 4988 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
aa909224
UB		 4989 ccw_device_set_offline(CARD_DDEV(card));
4990 ccw_device_set_offline(CARD_WDEV(card));
4991 ccw_device_set_offline(CARD_RDEV(card));
22ae2790 4992 qdio_free(CARD_DDEV(card));
aa909224
UB		 4993 rc = ccw_device_set_online(CARD_RDEV(card));
4994 if (rc)
4995 goto retriable;
4996 rc = ccw_device_set_online(CARD_WDEV(card));
4997 if (rc)
4998 goto retriable;
4999 rc = ccw_device_set_online(CARD_DDEV(card));
5000 if (rc)
5001 goto retriable;
aa909224 5002retriable:
4a71df50 5003 if (rc == -ERESTARTSYS) {
57a688aa 5004 QETH_CARD_TEXT(card, 2, "break1");
4a71df50
FB		 5005 return rc;
5006 } else if (rc) {
57a688aa 5007 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
6ebb7f8d 5008 if (--retries < 0)
4a71df50
FB		 5009 goto out;
5010 else
5011 goto retry;
5012 }
d0ff1f52 5013 qeth_determine_capabilities(card);
4a71df50
FB		 5014 qeth_init_tokens(card);
5015 qeth_init_func_level(card);
2e873d10
JW		 5016
5017 rc = qeth_idx_activate_read_channel(card);
5018 if (rc == -EINTR) {
57a688aa 5019 QETH_CARD_TEXT(card, 2, "break2");
4a71df50
FB		 5020 return rc;
5021 } else if (rc) {
57a688aa 5022 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 5023 if (--retries < 0)
5024 goto out;
5025 else
5026 goto retry;
5027 }
2e873d10
JW		 5028
5029 rc = qeth_idx_activate_write_channel(card);
5030 if (rc == -EINTR) {
57a688aa 5031 QETH_CARD_TEXT(card, 2, "break3");
4a71df50
FB		 5032 return rc;
5033 } else if (rc) {
57a688aa 5034 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 5035 if (--retries < 0)
5036 goto out;
5037 else
5038 goto retry;
5039 }
908abbb5 5040 card->read_or_write_problem = 0;
4a71df50
FB		 5041 rc = qeth_mpc_initialize(card);
5042 if (rc) {
57a688aa 5043 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 5044 goto out;
5045 }
1da74b1c 5046
10340510
JW		 5047 rc = qeth_send_startlan(card);
5048 if (rc) {
57a688aa 5049 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4b7ae122
JW		 5050 if (rc == -ENETDOWN) {
5051 dev_warn(&card->gdev->dev, "The LAN is offline\n");
9fae5c3b 5052 *carrier_ok = false;
10340510 5053 } else {
10340510
JW		 5054 goto out;
5055 }
91cc98f5 5056 } else {
9fae5c3b
JW		 5057 *carrier_ok = true;
5058 }
5059
1da74b1c 5060 card->options.ipa4.supported_funcs = 0;
4d7def2a 5061 card->options.ipa6.supported_funcs = 0;
1da74b1c 5062 card->options.adp.supported_funcs = 0;
b4d72c08 5063 card->options.sbp.supported_funcs = 0;
1da74b1c 5064 card->info.diagass_support = 0;
1aec42bc
TR		 5065 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5066 if (rc == -ENOMEM)
5067 goto out;
ee75fb86
KM		 5068 if (qeth_is_supported(card, IPA_IPV6)) {
5069 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5070 if (rc == -ENOMEM)
5071 goto out;
5072 }
1aec42bc
TR		 5073 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5074 rc = qeth_query_setadapterparms(card);
5075 if (rc < 0) {
57a688aa 5076 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
1aec42bc
TR		 5077 goto out;
5078 }
5079 }
5080 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5081 rc = qeth_query_setdiagass(card);
5082 if (rc < 0) {
57a688aa 5083 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
1aec42bc
TR		 5084 goto out;
5085 }
5086 }
4a71df50
FB		 5087 return 0;
5088out:
74eacdb9
FB		 5089 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5090 "an error on the device\n");
e19e5be8
JW		 5091 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5092 CARD_DEVID(card), rc);
4a71df50
FB		 5093 return rc;
5094}
5095EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5096
8d68af6a
JW		 5097static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5098 struct sk_buff *skb, int offset, int data_len)
4a71df50
FB		 5099{
5100 struct page *page = virt_to_page(element->addr);
b6f72f96 5101 unsigned int next_frag;
b3332930 5102
8d68af6a
JW		 5103 /* first fill the linear space */
5104 if (!skb->len) {
5105 unsigned int linear = min(data_len, skb_tailroom(skb));
0da9581d 5106
8d68af6a
JW		 5107 skb_put_data(skb, element->addr + offset, linear);
5108 data_len -= linear;
5109 if (!data_len)
5110 return;
5111 offset += linear;
5112 /* fall through to add page frag for remaining data */
4a71df50 5113 }
0da9581d 5114
8d68af6a 5115 next_frag = skb_shinfo(skb)->nr_frags;
b6f72f96 5116 get_page(page);
8d68af6a 5117 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
4a71df50
FB		 5118}
5119
bca51650
TR		 5120static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5121{
5122 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5123}
5124
4a71df50 5125struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
b3332930 5126 struct qeth_qdio_buffer *qethbuffer,
4a71df50
FB		 5127 struct qdio_buffer_element **__element, int *__offset,
5128 struct qeth_hdr **hdr)
5129{
5130 struct qdio_buffer_element *element = *__element;
b3332930 5131 struct qdio_buffer *buffer = qethbuffer->buffer;
4a71df50 5132 int offset = *__offset;
8d68af6a 5133 struct sk_buff *skb;
76b11f8e 5134 int skb_len = 0;
4a71df50
FB		 5135 void *data_ptr;
5136 int data_len;
5137 int headroom = 0;
5138 int use_rx_sg = 0;
4a71df50 5139
4a71df50 5140 /* qeth_hdr must not cross element boundaries */
864c17c3 5141 while (element->length < offset + sizeof(struct qeth_hdr)) {
4a71df50
FB		 5142 if (qeth_is_last_sbale(element))
5143 return NULL;
5144 element++;
5145 offset = 0;
4a71df50
FB		 5146 }
5147 *hdr = element->addr + offset;
5148
5149 offset += sizeof(struct qeth_hdr);
76b11f8e
UB		 5150 switch ((*hdr)->hdr.l2.id) {
5151 case QETH_HEADER_TYPE_LAYER2:
5152 skb_len = (*hdr)->hdr.l2.pkt_length;
5153 break;
5154 case QETH_HEADER_TYPE_LAYER3:
4a71df50 5155 skb_len = (*hdr)->hdr.l3.length;
1abd2296 5156 headroom = ETH_HLEN;
76b11f8e
UB		 5157 break;
5158 case QETH_HEADER_TYPE_OSN:
5159 skb_len = (*hdr)->hdr.osn.pdu_length;
5160 headroom = sizeof(struct qeth_hdr);
5161 break;
5162 default:
5163 break;
4a71df50
FB		 5164 }
5165
5166 if (!skb_len)
5167 return NULL;
5168
b3332930 5169 if (((skb_len >= card->options.rx_sg_cb) &&
379ac99e 5170 !IS_OSN(card) &&
b3332930 5171 (!atomic_read(&card->force_alloc_skb))) ||
8d68af6a 5172 (card->options.cq == QETH_CQ_ENABLED))
4a71df50 5173 use_rx_sg = 1;
8d68af6a
JW		 5174
5175 if (use_rx_sg && qethbuffer->rx_skb) {
5176 /* QETH_CQ_ENABLED only: */
5177 skb = qethbuffer->rx_skb;
5178 qethbuffer->rx_skb = NULL;
4a71df50 5179 } else {
8d68af6a
JW		 5180 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5181
37cf05d2 5182 skb = napi_alloc_skb(&card->napi, linear + headroom);
4a71df50 5183 }
8d68af6a
JW		 5184 if (!skb)
5185 goto no_mem;
5186 if (headroom)
5187 skb_reserve(skb, headroom);
4a71df50
FB		 5188
5189 data_ptr = element->addr + offset;
5190 while (skb_len) {
5191 data_len = min(skb_len, (int)(element->length - offset));
5192 if (data_len) {
8d68af6a
JW		 5193 if (use_rx_sg)
5194 qeth_create_skb_frag(element, skb, offset,
5195 data_len);
5196 else
59ae1d12 5197 skb_put_data(skb, data_ptr, data_len);
4a71df50
FB		 5198 }
5199 skb_len -= data_len;
5200 if (skb_len) {
5201 if (qeth_is_last_sbale(element)) {
847a50fd 5202 QETH_CARD_TEXT(card, 4, "unexeob");
efd5d9a4 5203 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4a71df50 5204 dev_kfree_skb_any(skb);
b0abc4f5 5205 QETH_CARD_STAT_INC(card, rx_errors);
4a71df50
FB		 5206 return NULL;
5207 }
5208 element++;
5209 offset = 0;
5210 data_ptr = element->addr;
5211 } else {
5212 offset += data_len;
5213 }
5214 }
5215 *__element = element;
5216 *__offset = offset;
b0abc4f5
JW		 5217 if (use_rx_sg) {
5218 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5219 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5220 skb_shinfo(skb)->nr_frags);
4a71df50
FB		 5221 }
5222 return skb;
5223no_mem:
5224 if (net_ratelimit()) {
847a50fd 5225 QETH_CARD_TEXT(card, 2, "noskbmem");
4a71df50 5226 }
b0abc4f5 5227 QETH_CARD_STAT_INC(card, rx_dropped);
4a71df50
FB		 5228 return NULL;
5229}
5230EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5231
d73ef324
JW		 5232int qeth_poll(struct napi_struct *napi, int budget)
5233{
5234 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5235 int work_done = 0;
5236 struct qeth_qdio_buffer *buffer;
5237 int done;
5238 int new_budget = budget;
5239
d73ef324
JW		 5240 while (1) {
5241 if (!card->rx.b_count) {
5242 card->rx.qdio_err = 0;
5243 card->rx.b_count = qdio_get_next_buffers(
5244 card->data.ccwdev, 0, &card->rx.b_index,
5245 &card->rx.qdio_err);
5246 if (card->rx.b_count <= 0) {
5247 card->rx.b_count = 0;
5248 break;
5249 }
5250 card->rx.b_element =
5251 &card->qdio.in_q->bufs[card->rx.b_index]
5252 .buffer->element[0];
5253 card->rx.e_offset = 0;
5254 }
5255
5256 while (card->rx.b_count) {
5257 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5258 if (!(card->rx.qdio_err &&
5259 qeth_check_qdio_errors(card, buffer->buffer,
5260 card->rx.qdio_err, "qinerr")))
5261 work_done +=
5262 card->discipline->process_rx_buffer(
5263 card, new_budget, &done);
5264 else
5265 done = 1;
5266
5267 if (done) {
b0abc4f5 5268 QETH_CARD_STAT_INC(card, rx_bufs);
d73ef324
JW		 5269 qeth_put_buffer_pool_entry(card,
5270 buffer->pool_entry);
5271 qeth_queue_input_buffer(card, card->rx.b_index);
5272 card->rx.b_count--;
5273 if (card->rx.b_count) {
5274 card->rx.b_index =
5275 (card->rx.b_index + 1) %
5276 QDIO_MAX_BUFFERS_PER_Q;
5277 card->rx.b_element =
5278 &card->qdio.in_q
5279 ->bufs[card->rx.b_index]
5280 .buffer->element[0];
5281 card->rx.e_offset = 0;
5282 }
5283 }
5284
5285 if (work_done >= budget)
5286 goto out;
5287 else
5288 new_budget = budget - work_done;
5289 }
5290 }
5291
978759e8 5292 napi_complete_done(napi, work_done);
d73ef324
JW		 5293 if (qdio_start_irq(card->data.ccwdev, 0))
5294 napi_schedule(&card->napi);
5295out:
d73ef324
JW		 5296 return work_done;
5297}
5298EXPORT_SYMBOL_GPL(qeth_poll);
5299
ad3cbf61
JW		 5300static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5301{
5302 if (!cmd->hdr.return_code)
5303 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5304 return cmd->hdr.return_code;
5305}
5306
4666d7fb
JW		 5307static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5308 struct qeth_reply *reply,
5309 unsigned long data)
5310{
5311 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5312 struct qeth_ipa_caps *caps = reply->param;
5313
5314 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 5315 return -EIO;
4666d7fb
JW		 5316
5317 caps->supported = cmd->data.setassparms.data.caps.supported;
5318 caps->enabled = cmd->data.setassparms.data.caps.enabled;
5319 return 0;
5320}
5321
8f43fb00
TR		 5322int qeth_setassparms_cb(struct qeth_card *card,
5323 struct qeth_reply *reply, unsigned long data)
4d7def2a 5324{
742d4d40 5325 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4d7def2a
TR		 5326
5327 QETH_CARD_TEXT(card, 4, "defadpcb");
5328
742d4d40
JW		 5329 if (cmd->hdr.return_code)
5330 return -EIO;
5331
5332 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5333 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5334 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5335 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5336 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
4d7def2a
TR		 5337 return 0;
5338}
8f43fb00 5339EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
4d7def2a 5340
b475e316
TR		 5341struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5342 enum qeth_ipa_funcs ipa_func,
b9150461
JW		 5343 u16 cmd_code,
5344 unsigned int data_length,
b475e316 5345 enum qeth_prot_versions prot)
4d7def2a 5346{
b9150461
JW		 5347 struct qeth_ipacmd_setassparms *setassparms;
5348 struct qeth_ipacmd_setassparms_hdr *hdr;
4d7def2a 5349 struct qeth_cmd_buffer *iob;
4d7def2a
TR		 5350
5351 QETH_CARD_TEXT(card, 4, "getasscm");
b9150461
JW		 5352 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5353 data_length +
5354 offsetof(struct qeth_ipacmd_setassparms,
5355 data));
5356 if (!iob)
5357 return NULL;
4d7def2a 5358
b9150461
JW		 5359 setassparms = &__ipa_cmd(iob)->data.setassparms;
5360 setassparms->assist_no = ipa_func;
4d7def2a 5361
b9150461
JW		 5362 hdr = &setassparms->hdr;
5363 hdr->length = sizeof(*hdr) + data_length;
5364 hdr->command_code = cmd_code;
4d7def2a
TR		 5365 return iob;
5366}
b475e316 5367EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
4d7def2a 5368
a8155b00
KM		 5369int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5370 enum qeth_ipa_funcs ipa_func,
1c696c89 5371 u16 cmd_code, u32 *data,
a8155b00 5372 enum qeth_prot_versions prot)
4d7def2a 5373{
1c696c89 5374 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
4d7def2a
TR		 5375 struct qeth_cmd_buffer *iob;
5376
a8155b00 5377 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
a8155b00 5378 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
4d7def2a
TR		 5379 if (!iob)
5380 return -ENOMEM;
4fa55fa9 5381
1c696c89
JW		 5382 if (data)
5383 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
4fa55fa9 5384 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
4d7def2a 5385}
a8155b00 5386EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
4d7def2a 5387
4a71df50
FB		 5388static void qeth_unregister_dbf_views(void)
5389{
d11ba0c4
PT		 5390 int x;
5391 for (x = 0; x < QETH_DBF_INFOS; x++) {
5392 debug_unregister(qeth_dbf[x].id);
5393 qeth_dbf[x].id = NULL;
5394 }
4a71df50
FB		 5395}
5396
8e96c51c 5397void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
cd023216
PT		 5398{
5399 char dbf_txt_buf[32];
345aa66e 5400 va_list args;
cd023216 5401
8e6a8285 5402 if (!debug_level_enabled(id, level))
cd023216 5403 return;
345aa66e
PT		 5404 va_start(args, fmt);
5405 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5406 va_end(args);
8e96c51c 5407 debug_text_event(id, level, dbf_txt_buf);
cd023216
PT		 5408}
5409EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5410
4a71df50
FB		 5411static int qeth_register_dbf_views(void)
5412{
d11ba0c4
PT		 5413 int ret;
5414 int x;
5415
5416 for (x = 0; x < QETH_DBF_INFOS; x++) {
5417 /* register the areas */
5418 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5419 qeth_dbf[x].pages,
5420 qeth_dbf[x].areas,
5421 qeth_dbf[x].len);
5422 if (qeth_dbf[x].id == NULL) {
5423 qeth_unregister_dbf_views();
5424 return -ENOMEM;
5425 }
4a71df50 5426
d11ba0c4
PT		 5427 /* register a view */
5428 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5429 if (ret) {
5430 qeth_unregister_dbf_views();
5431 return ret;
5432 }
4a71df50 5433
d11ba0c4
PT		 5434 /* set a passing level */
5435 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5436 }
4a71df50
FB		 5437
5438 return 0;
5439}
5440
a70fee3b
JW		 5441static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
5442
4a71df50
FB		 5443int qeth_core_load_discipline(struct qeth_card *card,
5444 enum qeth_discipline_id discipline)
5445{
2022e00c 5446 mutex_lock(&qeth_mod_mutex);
4a71df50
FB		 5447 switch (discipline) {
5448 case QETH_DISCIPLINE_LAYER3:
c041f2d4
SO		 5449 card->discipline = try_then_request_module(
5450 symbol_get(qeth_l3_discipline), "qeth_l3");
4a71df50
FB		 5451 break;
5452 case QETH_DISCIPLINE_LAYER2:
c041f2d4
SO		 5453 card->discipline = try_then_request_module(
5454 symbol_get(qeth_l2_discipline), "qeth_l2");
4a71df50 5455 break;
c70eb09d
JW		 5456 default:
5457 break;
4a71df50 5458 }
a70fee3b 5459 mutex_unlock(&qeth_mod_mutex);
c70eb09d 5460
c041f2d4 5461 if (!card->discipline) {
74eacdb9
FB		 5462 dev_err(&card->gdev->dev, "There is no kernel module to "
5463 "support discipline %d\n", discipline);
a70fee3b 5464 return -EINVAL;
4a71df50 5465 }
a70fee3b 5466
c1a935f6 5467 card->options.layer = discipline;
a70fee3b 5468 return 0;
4a71df50
FB		 5469}
5470
5471void qeth_core_free_discipline(struct qeth_card *card)
5472{
4fda3354 5473 if (IS_LAYER2(card))
c041f2d4 5474 symbol_put(qeth_l2_discipline);
4a71df50 5475 else
c041f2d4 5476 symbol_put(qeth_l3_discipline);
c1a935f6 5477 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
c041f2d4 5478 card->discipline = NULL;
4a71df50
FB		 5479}
5480
2d2ebb3e 5481const struct device_type qeth_generic_devtype = {
b7169c51
SO		 5482 .name = "qeth_generic",
5483 .groups = qeth_generic_attr_groups,
5484};
2d2ebb3e
JW		 5485EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5486
b7169c51
SO		 5487static const struct device_type qeth_osn_devtype = {
5488 .name = "qeth_osn",
5489 .groups = qeth_osn_attr_groups,
5490};
5491
819dc537
SR		 5492#define DBF_NAME_LEN 20
5493
5494struct qeth_dbf_entry {
5495 char dbf_name[DBF_NAME_LEN];
5496 debug_info_t *dbf_info;
5497 struct list_head dbf_list;
5498};
5499
5500static LIST_HEAD(qeth_dbf_list);
5501static DEFINE_MUTEX(qeth_dbf_list_mutex);
5502
5503static debug_info_t *qeth_get_dbf_entry(char *name)
5504{
5505 struct qeth_dbf_entry *entry;
5506 debug_info_t *rc = NULL;
5507
5508 mutex_lock(&qeth_dbf_list_mutex);
5509 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5510 if (strcmp(entry->dbf_name, name) == 0) {
5511 rc = entry->dbf_info;
5512 break;
5513 }
5514 }
5515 mutex_unlock(&qeth_dbf_list_mutex);
5516 return rc;
5517}
5518
5519static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5520{
5521 struct qeth_dbf_entry *new_entry;
5522
5523 card->debug = debug_register(name, 2, 1, 8);
5524 if (!card->debug) {
5525 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5526 goto err;
5527 }
5528 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5529 goto err_dbg;
5530 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5531 if (!new_entry)
5532 goto err_dbg;
5533 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5534 new_entry->dbf_info = card->debug;
5535 mutex_lock(&qeth_dbf_list_mutex);
5536 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5537 mutex_unlock(&qeth_dbf_list_mutex);
5538
5539 return 0;
5540
5541err_dbg:
5542 debug_unregister(card->debug);
5543err:
5544 return -ENOMEM;
5545}
5546
5547static void qeth_clear_dbf_list(void)
5548{
5549 struct qeth_dbf_entry *entry, *tmp;
5550
5551 mutex_lock(&qeth_dbf_list_mutex);
5552 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5553 list_del(&entry->dbf_list);
5554 debug_unregister(entry->dbf_info);
5555 kfree(entry);
5556 }
5557 mutex_unlock(&qeth_dbf_list_mutex);
5558}
5559
d3d1b205
JW		 5560static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5561{
5562 struct net_device *dev;
5563
5564 switch (card->info.type) {
5565 case QETH_CARD_TYPE_IQD:
3a18d754
JW		 5566 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN,
5567 ether_setup, QETH_MAX_QUEUES, 1);
d3d1b205 5568 break;
73dc2daf
JW		 5569 case QETH_CARD_TYPE_OSM:
5570 dev = alloc_etherdev(0);
5571 break;
d3d1b205
JW		 5572 case QETH_CARD_TYPE_OSN:
5573 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5574 break;
5575 default:
73dc2daf 5576 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1);
d3d1b205
JW		 5577 }
5578
5579 if (!dev)
5580 return NULL;
5581
5582 dev->ml_priv = card;
5583 dev->watchdog_timeo = QETH_TX_TIMEOUT;
72f219da 5584 dev->min_mtu = IS_OSN(card) ? 64 : 576;
8ce7a9e0
JW		 5585 /* initialized when device first goes online: */
5586 dev->max_mtu = 0;
5587 dev->mtu = 0;
d3d1b205
JW		 5588 SET_NETDEV_DEV(dev, &card->gdev->dev);
5589 netif_carrier_off(dev);
5f89eca5 5590
d896ac62
JW		 5591 if (IS_OSN(card)) {
5592 dev->ethtool_ops = &qeth_osn_ethtool_ops;
5593 } else {
5594 dev->ethtool_ops = &qeth_ethtool_ops;
5f89eca5
JW		 5595 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5596 dev->hw_features |= NETIF_F_SG;
5597 dev->vlan_features |= NETIF_F_SG;
3a18d754 5598 if (IS_IQD(card)) {
04db741d 5599 dev->features |= NETIF_F_SG;
bd966839
JW		 5600 if (netif_set_real_num_tx_queues(dev,
5601 QETH_IQD_MIN_TXQ)) {
5602 free_netdev(dev);
5603 return NULL;
5604 }
3a18d754 5605 }
5f89eca5
JW		 5606 }
5607
d3d1b205
JW		 5608 return dev;
5609}
5610
5611struct net_device *qeth_clone_netdev(struct net_device *orig)
5612{
5613 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5614
5615 if (!clone)
5616 return NULL;
5617
5618 clone->dev_port = orig->dev_port;
5619 return clone;
5620}
5621
4a71df50
FB		 5622static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5623{
5624 struct qeth_card *card;
5625 struct device *dev;
5626 int rc;
c70eb09d 5627 enum qeth_discipline_id enforced_disc;
819dc537 5628 char dbf_name[DBF_NAME_LEN];
4a71df50 5629
d11ba0c4 5630 QETH_DBF_TEXT(SETUP, 2, "probedev");
4a71df50
FB		 5631
5632 dev = &gdev->dev;
5633 if (!get_device(dev))
5634 return -ENODEV;
5635
2a0217d5 5636 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4a71df50 5637
121ca39a 5638 card = qeth_alloc_card(gdev);
4a71df50 5639 if (!card) {
d11ba0c4 5640 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4a71df50
FB		 5641 rc = -ENOMEM;
5642 goto err_dev;
5643 }
af039068
CO		 5644
5645 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5646 dev_name(&gdev->dev));
819dc537 5647 card->debug = qeth_get_dbf_entry(dbf_name);
af039068 5648 if (!card->debug) {
819dc537
SR		 5649 rc = qeth_add_dbf_entry(card, dbf_name);
5650 if (rc)
5651 goto err_card;
af039068 5652 }
af039068 5653
95f4d8b7 5654 qeth_setup_card(card);
d3d1b205 5655 card->dev = qeth_alloc_netdev(card);
778b1ac7
JW		 5656 if (!card->dev) {
5657 rc = -ENOMEM;
d3d1b205 5658 goto err_card;
778b1ac7 5659 }
d3d1b205 5660
73dc2daf
JW		 5661 card->qdio.no_out_queues = card->dev->num_tx_queues;
5662 rc = qeth_update_from_chp_desc(card);
5663 if (rc)
5664 goto err_chp_desc;
c70eb09d 5665 qeth_determine_capabilities(card);
09ac887f
JW		 5666 qeth_set_blkt_defaults(card);
5667
c70eb09d
JW		 5668 enforced_disc = qeth_enforce_discipline(card);
5669 switch (enforced_disc) {
5670 case QETH_DISCIPLINE_UNDETERMINED:
5671 gdev->dev.type = &qeth_generic_devtype;
5672 break;
5673 default:
5674 card->info.layer_enforced = true;
5675 rc = qeth_core_load_discipline(card, enforced_disc);
5113fec0 5676 if (rc)
d3d1b205 5677 goto err_load;
2d2ebb3e 5678
379ac99e
JW		 5679 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
5680 card->discipline->devtype;
c041f2d4 5681 rc = card->discipline->setup(card->gdev);
4a71df50 5682 if (rc)
5113fec0 5683 goto err_disc;
2d2ebb3e 5684 break;
4a71df50
FB		 5685 }
5686
4a71df50
FB		 5687 return 0;
5688
5113fec0
UB		 5689err_disc:
5690 qeth_core_free_discipline(card);
d3d1b205 5691err_load:
a4cdc9ba 5692err_chp_desc:
73dc2daf 5693 free_netdev(card->dev);
4a71df50
FB		 5694err_card:
5695 qeth_core_free_card(card);
5696err_dev:
5697 put_device(dev);
5698 return rc;
5699}
5700
5701static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5702{
4a71df50
FB		 5703 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5704
57a688aa 5705 QETH_CARD_TEXT(card, 2, "removedv");
4a71df50 5706
c041f2d4
SO		 5707 if (card->discipline) {
5708 card->discipline->remove(gdev);
9dc48ccc
UB		 5709 qeth_core_free_discipline(card);
5710 }
5711
d3d1b205 5712 free_netdev(card->dev);
4a71df50 5713 qeth_core_free_card(card);
4a71df50 5714 put_device(&gdev->dev);
4a71df50
FB		 5715}
5716
5717static int qeth_core_set_online(struct ccwgroup_device *gdev)
5718{
5719 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5720 int rc = 0;
c70eb09d 5721 enum qeth_discipline_id def_discipline;
4a71df50 5722
c041f2d4 5723 if (!card->discipline) {
379ac99e
JW		 5724 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
5725 QETH_DISCIPLINE_LAYER2;
4a71df50
FB		 5726 rc = qeth_core_load_discipline(card, def_discipline);
5727 if (rc)
5728 goto err;
c041f2d4 5729 rc = card->discipline->setup(card->gdev);
9111e788
UB		 5730 if (rc) {
5731 qeth_core_free_discipline(card);
4a71df50 5732 goto err;
9111e788 5733 }
4a71df50 5734 }
c041f2d4 5735 rc = card->discipline->set_online(gdev);
4a71df50
FB		 5736err:
5737 return rc;
5738}
5739
5740static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5741{
5742 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
c041f2d4 5743 return card->discipline->set_offline(gdev);
4a71df50
FB		 5744}
5745
5746static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5747{
5748 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
96d1bb53
JW		 5749 qeth_set_allowed_threads(card, 0, 1);
5750 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5751 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5752 qeth_qdio_clear_card(card, 0);
41c47da3 5753 qeth_drain_output_queues(card);
96d1bb53 5754 qdio_free(CARD_DDEV(card));
4a71df50
FB		 5755}
5756
bbcfcdc8
FB		 5757static int qeth_core_freeze(struct ccwgroup_device *gdev)
5758{
5759 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
c041f2d4
SO		 5760 if (card->discipline && card->discipline->freeze)
5761 return card->discipline->freeze(gdev);
bbcfcdc8
FB		 5762 return 0;
5763}
5764
5765static int qeth_core_thaw(struct ccwgroup_device *gdev)
5766{
5767 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
c041f2d4
SO		 5768 if (card->discipline && card->discipline->thaw)
5769 return card->discipline->thaw(gdev);
bbcfcdc8
FB		 5770 return 0;
5771}
5772
5773static int qeth_core_restore(struct ccwgroup_device *gdev)
5774{
5775 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
c041f2d4
SO		 5776 if (card->discipline && card->discipline->restore)
5777 return card->discipline->restore(gdev);
bbcfcdc8
FB		 5778 return 0;
5779}
5780
36369569
GKH		 5781static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5782 size_t count)
4a71df50
FB		 5783{
5784 int err;
4a71df50 5785
6d8769ab
JW		 5786 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5787 buf);
b7169c51
SO		 5788
5789 return err ? err : count;
5790}
36369569 5791static DRIVER_ATTR_WO(group);
4a71df50 5792
f47e2256
SO		 5793static struct attribute *qeth_drv_attrs[] = {
5794 &driver_attr_group.attr,
5795 NULL,
5796};
5797static struct attribute_group qeth_drv_attr_group = {
5798 .attrs = qeth_drv_attrs,
5799};
5800static const struct attribute_group *qeth_drv_attr_groups[] = {
5801 &qeth_drv_attr_group,
5802 NULL,
5803};
5804
6d8769ab
JW		 5805static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5806 .driver = {
5807 .groups = qeth_drv_attr_groups,
5808 .owner = THIS_MODULE,
5809 .name = "qeth",
5810 },
5811 .ccw_driver = &qeth_ccw_driver,
5812 .setup = qeth_core_probe_device,
5813 .remove = qeth_core_remove_device,
5814 .set_online = qeth_core_set_online,
5815 .set_offline = qeth_core_set_offline,
5816 .shutdown = qeth_core_shutdown,
5817 .prepare = NULL,
5818 .complete = NULL,
5819 .freeze = qeth_core_freeze,
5820 .thaw = qeth_core_thaw,
5821 .restore = qeth_core_restore,
5822};
5823
d7d18da1
JW		 5824struct qeth_card *qeth_get_card_by_busid(char *bus_id)
5825{
5826 struct ccwgroup_device *gdev;
5827 struct qeth_card *card;
5828
5829 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
5830 if (!gdev)
5831 return NULL;
5832
5833 card = dev_get_drvdata(&gdev->dev);
5834 put_device(&gdev->dev);
5835 return card;
5836}
5837EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
5838
942d6984
JW		 5839int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5840{
5841 struct qeth_card *card = dev->ml_priv;
5842 struct mii_ioctl_data *mii_data;
5843 int rc = 0;
5844
5845 if (!card)
5846 return -ENODEV;
5847
942d6984
JW		 5848 switch (cmd) {
5849 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5850 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5851 break;
5852 case SIOC_QETH_GET_CARD_TYPE:
379ac99e
JW		 5853 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
5854 !IS_VM_NIC(card))
942d6984 5855 return 1;
379ac99e 5856 return 0;
942d6984
JW		 5857 case SIOCGMIIPHY:
5858 mii_data = if_mii(rq);
5859 mii_data->phy_id = 0;
5860 break;
5861 case SIOCGMIIREG:
5862 mii_data = if_mii(rq);
5863 if (mii_data->phy_id != 0)
5864 rc = -EINVAL;
5865 else
5866 mii_data->val_out = qeth_mdio_read(dev,
5867 mii_data->phy_id, mii_data->reg_num);
5868 break;
5869 case SIOC_QETH_QUERY_OAT:
5870 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5871 break;
5872 default:
5873 if (card->discipline->do_ioctl)
5874 rc = card->discipline->do_ioctl(dev, rq, cmd);
5875 else
5876 rc = -EOPNOTSUPP;
5877 }
5878 if (rc)
5879 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5880 return rc;
5881}
5882EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5883
4386e34f
JW		 5884static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
5885 unsigned long data)
c9475369
TR		 5886{
5887 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4386e34f 5888 u32 *features = reply->param;
c9475369 5889
ad3cbf61 5890 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 5891 return -EIO;
c9475369 5892
4386e34f 5893 *features = cmd->data.setassparms.data.flags_32bit;
c9475369
TR		 5894 return 0;
5895}
5896
4386e34f
JW		 5897static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5898 enum qeth_prot_versions prot)
c9475369 5899{
1c696c89
JW		 5900 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
5901 NULL, prot);
c9475369
TR		 5902}
5903
4386e34f
JW		 5904static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5905 enum qeth_prot_versions prot)
4d7def2a 5906{
571f9dd8 5907 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
4386e34f
JW		 5908 struct qeth_cmd_buffer *iob;
5909 struct qeth_ipa_caps caps;
5910 u32 features;
4d7def2a
TR		 5911 int rc;
5912
7e83747d
JW		 5913 /* some L3 HW requires combined L3+L4 csum offload: */
5914 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
5915 cstype == IPA_OUTBOUND_CHECKSUM)
571f9dd8 5916 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
7e83747d 5917
4386e34f
JW		 5918 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
5919 prot);
5920 if (!iob)
5921 return -ENOMEM;
5922
5923 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
5924 if (rc)
4d7def2a 5925 return rc;
7e83747d 5926
4386e34f
JW		 5927 if ((required_features & features) != required_features) {
5928 qeth_set_csum_off(card, cstype, prot);
5929 return -EOPNOTSUPP;
5930 }
7e83747d 5931
b9150461
JW		 5932 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
5933 SETASS_DATA_SIZEOF(flags_32bit),
a8155b00 5934 prot);
4386e34f
JW		 5935 if (!iob) {
5936 qeth_set_csum_off(card, cstype, prot);
5937 return -ENOMEM;
f9d8e6dc 5938 }
4386e34f
JW		 5939
5940 if (features & QETH_IPA_CHECKSUM_LP2LP)
5941 required_features |= QETH_IPA_CHECKSUM_LP2LP;
5942 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
5943 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4d7def2a 5944 if (rc) {
4386e34f 5945 qeth_set_csum_off(card, cstype, prot);
4d7def2a
TR		 5946 return rc;
5947 }
8f43fb00 5948
4386e34f
JW		 5949 if (!qeth_ipa_caps_supported(&caps, required_features) ||
5950 !qeth_ipa_caps_enabled(&caps, required_features)) {
5951 qeth_set_csum_off(card, cstype, prot);
5952 return -EOPNOTSUPP;
5953 }
5954
a8155b00
KM		 5955 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
5956 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
4386e34f
JW		 5957 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
5958 cstype == IPA_OUTBOUND_CHECKSUM)
5959 dev_warn(&card->gdev->dev,
5960 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
5961 QETH_CARD_IFNAME(card));
4d7def2a
TR		 5962 return 0;
5963}
5964
a8155b00
KM		 5965static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
5966 enum qeth_prot_versions prot)
4d7def2a 5967{
742d4d40
JW		 5968 return on ? qeth_set_csum_on(card, cstype, prot) :
5969 qeth_set_csum_off(card, cstype, prot);
4d7def2a 5970}
4d7def2a 5971
4666d7fb
JW		 5972static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
5973 unsigned long data)
5974{
5975 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5976 struct qeth_tso_start_data *tso_data = reply->param;
5977
5978 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 5979 return -EIO;
4666d7fb
JW		 5980
5981 tso_data->mss = cmd->data.setassparms.data.tso.mss;
5982 tso_data->supported = cmd->data.setassparms.data.tso.supported;
5983 return 0;
5984}
5985
1f83b817
JW		 5986static int qeth_set_tso_off(struct qeth_card *card,
5987 enum qeth_prot_versions prot)
4d7def2a 5988{
1f83b817 5989 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
1c696c89 5990 IPA_CMD_ASS_STOP, NULL, prot);
1f83b817 5991}
4d7def2a 5992
1f83b817
JW		 5993static int qeth_set_tso_on(struct qeth_card *card,
5994 enum qeth_prot_versions prot)
5995{
4666d7fb
JW		 5996 struct qeth_tso_start_data tso_data;
5997 struct qeth_cmd_buffer *iob;
5998 struct qeth_ipa_caps caps;
5999 int rc;
6000
6001 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6002 IPA_CMD_ASS_START, 0, prot);
6003 if (!iob)
6004 return -ENOMEM;
6005
4fa55fa9 6006 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
4666d7fb
JW		 6007 if (rc)
6008 return rc;
6009
6010 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6011 qeth_set_tso_off(card, prot);
6012 return -EOPNOTSUPP;
6013 }
6014
6015 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
b9150461
JW		 6016 IPA_CMD_ASS_ENABLE,
6017 SETASS_DATA_SIZEOF(caps), prot);
4666d7fb
JW		 6018 if (!iob) {
6019 qeth_set_tso_off(card, prot);
6020 return -ENOMEM;
6021 }
6022
6023 /* enable TSO capability */
4fa55fa9
JW		 6024 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6025 QETH_IPA_LARGE_SEND_TCP;
6026 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4666d7fb
JW		 6027 if (rc) {
6028 qeth_set_tso_off(card, prot);
6029 return rc;
6030 }
6031
6032 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6033 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6034 qeth_set_tso_off(card, prot);
6035 return -EOPNOTSUPP;
6036 }
6037
6038 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6039 tso_data.mss);
6040 return 0;
1f83b817 6041}
4d7def2a 6042
1f83b817
JW		 6043static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6044 enum qeth_prot_versions prot)
6045{
742d4d40 6046 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
4d7def2a 6047}
8f43fb00 6048
d7e6ed97
KM		 6049static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6050{
6051 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6052 int rc_ipv6;
6053
6054 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6055 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6056 QETH_PROT_IPV4);
6057 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6058 /* no/one Offload Assist available, so the rc is trivial */
6059 return rc_ipv4;
ce344356 6060
d7e6ed97
KM		 6061 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6062 QETH_PROT_IPV6);
6063
6064 if (on)
6065 /* enable: success if any Assist is active */
6066 return (rc_ipv6) ? rc_ipv4 : 0;
6067
6068 /* disable: failure if any Assist is still active */
6069 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6070}
6071
ce344356 6072/**
d025da9e
JW		 6073 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6074 * @dev: a net_device
ce344356 6075 */
d025da9e 6076void qeth_enable_hw_features(struct net_device *dev)
e830baa9
HW		 6077{
6078 struct qeth_card *card = dev->ml_priv;
d025da9e 6079 netdev_features_t features;
e830baa9 6080
d025da9e 6081 features = dev->features;
5fc692a7 6082 /* force-off any feature that might need an IPA sequence.
ce344356
JW		 6083 * netdev_update_features() will restart them.
6084 */
5fc692a7
JW		 6085 dev->features &= ~dev->hw_features;
6086 /* toggle VLAN filter, so that VIDs are re-programmed: */
6087 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6088 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6089 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6090 }
ce344356 6091 netdev_update_features(dev);
d025da9e
JW		 6092 if (features != dev->features)
6093 dev_warn(&card->gdev->dev,
6094 "Device recovery failed to restore all offload features\n");
e830baa9 6095}
d025da9e 6096EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
e830baa9 6097
8f43fb00
TR		 6098int qeth_set_features(struct net_device *dev, netdev_features_t features)
6099{
6100 struct qeth_card *card = dev->ml_priv;
6c7cd712 6101 netdev_features_t changed = dev->features ^ features;
8f43fb00
TR		 6102 int rc = 0;
6103
57a688aa
JW		 6104 QETH_CARD_TEXT(card, 2, "setfeat");
6105 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00 6106
6c7cd712 6107 if ((changed & NETIF_F_IP_CSUM)) {
a8155b00
KM		 6108 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6109 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6c7cd712
HW		 6110 if (rc)
6111 changed ^= NETIF_F_IP_CSUM;
6112 }
571f9dd8
KM		 6113 if (changed & NETIF_F_IPV6_CSUM) {
6114 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6115 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6116 if (rc)
6117 changed ^= NETIF_F_IPV6_CSUM;
6118 }
d7e6ed97
KM		 6119 if (changed & NETIF_F_RXCSUM) {
6120 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6c7cd712
HW		 6121 if (rc)
6122 changed ^= NETIF_F_RXCSUM;
6123 }
1f83b817
JW		 6124 if (changed & NETIF_F_TSO) {
6125 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6126 QETH_PROT_IPV4);
6c7cd712
HW		 6127 if (rc)
6128 changed ^= NETIF_F_TSO;
6129 }
82bf5c08
JW		 6130 if (changed & NETIF_F_TSO6) {
6131 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6132 QETH_PROT_IPV6);
6133 if (rc)
6134 changed ^= NETIF_F_TSO6;
6135 }
6c7cd712
HW		 6136
6137 /* everything changed successfully? */
6138 if ((dev->features ^ features) == changed)
6139 return 0;
6140 /* something went wrong. save changed features and return error */
6141 dev->features ^= changed;
6142 return -EIO;
8f43fb00
TR		 6143}
6144EXPORT_SYMBOL_GPL(qeth_set_features);
6145
6146netdev_features_t qeth_fix_features(struct net_device *dev,
6147 netdev_features_t features)
6148{
6149 struct qeth_card *card = dev->ml_priv;
6150
57a688aa 6151 QETH_CARD_TEXT(card, 2, "fixfeat");
8f43fb00
TR		 6152 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6153 features &= ~NETIF_F_IP_CSUM;
571f9dd8
KM		 6154 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6155 features &= ~NETIF_F_IPV6_CSUM;
d7e6ed97
KM		 6156 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6157 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
8f43fb00 6158 features &= ~NETIF_F_RXCSUM;
cf536ffe 6159 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
8f43fb00 6160 features &= ~NETIF_F_TSO;
82bf5c08
JW		 6161 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6162 features &= ~NETIF_F_TSO6;
e6e771b3 6163
57a688aa 6164 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00
TR		 6165 return features;
6166}
6167EXPORT_SYMBOL_GPL(qeth_fix_features);
4d7def2a 6168
6d69b1f1
JW		 6169netdev_features_t qeth_features_check(struct sk_buff *skb,
6170 struct net_device *dev,
6171 netdev_features_t features)
6172{
6173 /* GSO segmentation builds skbs with
6174 * a (small) linear part for the headers, and
6175 * page frags for the data.
6176 * Compared to a linear skb, the header-only part consumes an
6177 * additional buffer element. This reduces buffer utilization, and
6178 * hurts throughput. So compress small segments into one element.
6179 */
6180 if (netif_needs_gso(skb, features)) {
6181 /* match skb_segment(): */
6182 unsigned int doffset = skb->data - skb_mac_header(skb);
6183 unsigned int hsize = skb_shinfo(skb)->gso_size;
6184 unsigned int hroom = skb_headroom(skb);
6185
6186 /* linearize only if resulting skb allocations are order-0: */
6187 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6188 features &= ~NETIF_F_SG;
6189 }
6190
6191 return vlan_features_check(skb, features);
6192}
6193EXPORT_SYMBOL_GPL(qeth_features_check);
6194
b0abc4f5
JW		 6195void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6196{
6197 struct qeth_card *card = dev->ml_priv;
6198 struct qeth_qdio_out_q *queue;
6199 unsigned int i;
6200
6201 QETH_CARD_TEXT(card, 5, "getstat");
6202
6203 stats->rx_packets = card->stats.rx_packets;
6204 stats->rx_bytes = card->stats.rx_bytes;
6205 stats->rx_errors = card->stats.rx_errors;
6206 stats->rx_dropped = card->stats.rx_dropped;
6207 stats->multicast = card->stats.rx_multicast;
b0abc4f5
JW		 6208
6209 for (i = 0; i < card->qdio.no_out_queues; i++) {
6210 queue = card->qdio.out_qs[i];
6211
6212 stats->tx_packets += queue->stats.tx_packets;
6213 stats->tx_bytes += queue->stats.tx_bytes;
6214 stats->tx_errors += queue->stats.tx_errors;
6215 stats->tx_dropped += queue->stats.tx_dropped;
b0abc4f5
JW		 6216 }
6217}
6218EXPORT_SYMBOL_GPL(qeth_get_stats64);
6219
3a18d754
JW		 6220u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6221 u8 cast_type, struct net_device *sb_dev)
6222{
6223 if (cast_type != RTN_UNICAST)
6224 return QETH_IQD_MCAST_TXQ;
6225 return QETH_IQD_MIN_UCAST_TXQ;
6226}
6227EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6228
e6e771b3 6229int qeth_open(struct net_device *dev)
e22355ea
JW		 6230{
6231 struct qeth_card *card = dev->ml_priv;
6232
6233 QETH_CARD_TEXT(card, 4, "qethopen");
e22355ea
JW		 6234
6235 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0)
6236 return -EIO;
6237
6238 card->data.state = CH_STATE_UP;
3a18d754 6239 netif_tx_start_all_queues(dev);
e22355ea
JW		 6240
6241 napi_enable(&card->napi);
6242 local_bh_disable();
6243 napi_schedule(&card->napi);
6244 /* kick-start the NAPI softirq: */
6245 local_bh_enable();
6246 return 0;
6247}
e22355ea
JW		 6248EXPORT_SYMBOL_GPL(qeth_open);
6249
6250int qeth_stop(struct net_device *dev)
6251{
6252 struct qeth_card *card = dev->ml_priv;
6253
6254 QETH_CARD_TEXT(card, 4, "qethstop");
6255 netif_tx_disable(dev);
0f7aedbd 6256 napi_disable(&card->napi);
e22355ea
JW		 6257 return 0;
6258}
6259EXPORT_SYMBOL_GPL(qeth_stop);
6260
4a71df50
FB		 6261static int __init qeth_core_init(void)
6262{
6263 int rc;
6264
74eacdb9 6265 pr_info("loading core functions\n");
4a71df50
FB		 6266
6267 rc = qeth_register_dbf_views();
6268 if (rc)
a936b1ef 6269 goto dbf_err;
035da16f 6270 qeth_core_root_dev = root_device_register("qeth");
9262c6c2 6271 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
4a71df50
FB		 6272 if (rc)
6273 goto register_err;
55494264
JW		 6274 qeth_core_header_cache =
6275 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6276 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6277 0, NULL);
683d718a
FB		 6278 if (!qeth_core_header_cache) {
6279 rc = -ENOMEM;
6280 goto slab_err;
6281 }
0da9581d
EL		 6282 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6283 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6284 if (!qeth_qdio_outbuf_cache) {
6285 rc = -ENOMEM;
6286 goto cqslab_err;
6287 }
afb6ac59
SO		 6288 rc = ccw_driver_register(&qeth_ccw_driver);
6289 if (rc)
6290 goto ccw_err;
afb6ac59
SO		 6291 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6292 if (rc)
6293 goto ccwgroup_err;
0da9581d 6294
683d718a 6295 return 0;
afb6ac59
SO		 6296
6297ccwgroup_err:
6298 ccw_driver_unregister(&qeth_ccw_driver);
6299ccw_err:
6300 kmem_cache_destroy(qeth_qdio_outbuf_cache);
0da9581d
EL		 6301cqslab_err:
6302 kmem_cache_destroy(qeth_core_header_cache);
683d718a 6303slab_err:
035da16f 6304 root_device_unregister(qeth_core_root_dev);
4a71df50 6305register_err:
4a71df50 6306 qeth_unregister_dbf_views();
a936b1ef 6307dbf_err:
74eacdb9 6308 pr_err("Initializing the qeth device driver failed\n");
4a71df50
FB		 6309 return rc;
6310}
6311
6312static void __exit qeth_core_exit(void)
6313{
819dc537 6314 qeth_clear_dbf_list();
4a71df50
FB		 6315 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6316 ccw_driver_unregister(&qeth_ccw_driver);
0da9581d 6317 kmem_cache_destroy(qeth_qdio_outbuf_cache);
683d718a 6318 kmem_cache_destroy(qeth_core_header_cache);
afb6ac59 6319 root_device_unregister(qeth_core_root_dev);
4a71df50 6320 qeth_unregister_dbf_views();
74eacdb9 6321 pr_info("core functions removed\n");
4a71df50
FB		 6322}
6323
6324module_init(qeth_core_init);
6325module_exit(qeth_core_exit);
6326MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6327MODULE_DESCRIPTION("qeth core functions");
6328MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)