projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-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,
12fc286f
JW		 66 struct qeth_cmd_buffer *iob,
67 unsigned int data_length);
4a71df50
FB		 68static void qeth_free_buffer_pool(struct qeth_card *);
69static int qeth_qdio_establish(struct qeth_card *);
41c47da3 70static void qeth_free_qdio_queues(struct qeth_card *card);
b3332930
FB		 71static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
72 struct qeth_qdio_out_buffer *buf,
73 enum iucv_tx_notify notification);
85e537d8
JW		 74static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
75 int budget);
72861ae7 76static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
4a71df50 77
0f54761d
SR		 78static void qeth_close_dev_handler(struct work_struct *work)
79{
80 struct qeth_card *card;
81
82 card = container_of(work, struct qeth_card, close_dev_work);
83 QETH_CARD_TEXT(card, 2, "cldevhdl");
0f54761d
SR		 84 ccwgroup_set_offline(card->gdev);
85}
86
cef6ff22 87static const char *qeth_get_cardname(struct qeth_card *card)
4a71df50 88{
379ac99e 89 if (IS_VM_NIC(card)) {
4a71df50 90 switch (card->info.type) {
5113fec0 91 case QETH_CARD_TYPE_OSD:
7096b187 92 return " Virtual NIC QDIO";
4a71df50 93 case QETH_CARD_TYPE_IQD:
7096b187 94 return " Virtual NIC Hiper";
5113fec0 95 case QETH_CARD_TYPE_OSM:
7096b187 96 return " Virtual NIC QDIO - OSM";
5113fec0 97 case QETH_CARD_TYPE_OSX:
7096b187 98 return " Virtual NIC QDIO - OSX";
4a71df50
FB		 99 default:
100 return " unknown";
101 }
102 } else {
103 switch (card->info.type) {
5113fec0 104 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 105 return " OSD Express";
106 case QETH_CARD_TYPE_IQD:
107 return " HiperSockets";
108 case QETH_CARD_TYPE_OSN:
109 return " OSN QDIO";
5113fec0
UB		 110 case QETH_CARD_TYPE_OSM:
111 return " OSM QDIO";
112 case QETH_CARD_TYPE_OSX:
113 return " OSX QDIO";
4a71df50
FB		 114 default:
115 return " unknown";
116 }
117 }
118 return " n/a";
119}
120
121/* max length to be returned: 14 */
122const char *qeth_get_cardname_short(struct qeth_card *card)
123{
379ac99e 124 if (IS_VM_NIC(card)) {
4a71df50 125 switch (card->info.type) {
5113fec0 126 case QETH_CARD_TYPE_OSD:
7096b187 127 return "Virt.NIC QDIO";
4a71df50 128 case QETH_CARD_TYPE_IQD:
7096b187 129 return "Virt.NIC Hiper";
5113fec0 130 case QETH_CARD_TYPE_OSM:
7096b187 131 return "Virt.NIC OSM";
5113fec0 132 case QETH_CARD_TYPE_OSX:
7096b187 133 return "Virt.NIC OSX";
4a71df50
FB		 134 default:
135 return "unknown";
136 }
137 } else {
138 switch (card->info.type) {
5113fec0 139 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 140 switch (card->info.link_type) {
141 case QETH_LINK_TYPE_FAST_ETH:
142 return "OSD_100";
143 case QETH_LINK_TYPE_HSTR:
144 return "HSTR";
145 case QETH_LINK_TYPE_GBIT_ETH:
146 return "OSD_1000";
147 case QETH_LINK_TYPE_10GBIT_ETH:
148 return "OSD_10GIG";
54e049c2
JW		 149 case QETH_LINK_TYPE_25GBIT_ETH:
150 return "OSD_25GIG";
4a71df50
FB		 151 case QETH_LINK_TYPE_LANE_ETH100:
152 return "OSD_FE_LANE";
153 case QETH_LINK_TYPE_LANE_TR:
154 return "OSD_TR_LANE";
155 case QETH_LINK_TYPE_LANE_ETH1000:
156 return "OSD_GbE_LANE";
157 case QETH_LINK_TYPE_LANE:
158 return "OSD_ATM_LANE";
159 default:
160 return "OSD_Express";
161 }
162 case QETH_CARD_TYPE_IQD:
163 return "HiperSockets";
164 case QETH_CARD_TYPE_OSN:
165 return "OSN";
5113fec0
UB		 166 case QETH_CARD_TYPE_OSM:
167 return "OSM_1000";
168 case QETH_CARD_TYPE_OSX:
169 return "OSX_10GIG";
4a71df50
FB		 170 default:
171 return "unknown";
172 }
173 }
174 return "n/a";
175}
176
177void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
178 int clear_start_mask)
179{
180 unsigned long flags;
181
182 spin_lock_irqsave(&card->thread_mask_lock, flags);
183 card->thread_allowed_mask = threads;
184 if (clear_start_mask)
185 card->thread_start_mask &= threads;
186 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
187 wake_up(&card->wait_q);
188}
189EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
190
191int qeth_threads_running(struct qeth_card *card, unsigned long threads)
192{
193 unsigned long flags;
194 int rc = 0;
195
196 spin_lock_irqsave(&card->thread_mask_lock, flags);
197 rc = (card->thread_running_mask & threads);
198 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
199 return rc;
200}
201EXPORT_SYMBOL_GPL(qeth_threads_running);
202
4a71df50
FB		 203void qeth_clear_working_pool_list(struct qeth_card *card)
204{
205 struct qeth_buffer_pool_entry *pool_entry, *tmp;
206
847a50fd 207 QETH_CARD_TEXT(card, 5, "clwrklst");
4a71df50
FB		 208 list_for_each_entry_safe(pool_entry, tmp,
209 &card->qdio.in_buf_pool.entry_list, list){
210 list_del(&pool_entry->list);
211 }
212}
213EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
214
215static int qeth_alloc_buffer_pool(struct qeth_card *card)
216{
217 struct qeth_buffer_pool_entry *pool_entry;
218 void *ptr;
219 int i, j;
220
847a50fd 221 QETH_CARD_TEXT(card, 5, "alocpool");
4a71df50 222 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
b3332930 223 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
4a71df50
FB		 224 if (!pool_entry) {
225 qeth_free_buffer_pool(card);
226 return -ENOMEM;
227 }
228 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
508b3c4f 229 ptr = (void *) __get_free_page(GFP_KERNEL);
4a71df50
FB		 230 if (!ptr) {
231 while (j > 0)
232 free_page((unsigned long)
233 pool_entry->elements[--j]);
234 kfree(pool_entry);
235 qeth_free_buffer_pool(card);
236 return -ENOMEM;
237 }
238 pool_entry->elements[j] = ptr;
239 }
240 list_add(&pool_entry->init_list,
241 &card->qdio.init_pool.entry_list);
242 }
243 return 0;
244}
245
246int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
247{
847a50fd 248 QETH_CARD_TEXT(card, 2, "realcbp");
4a71df50 249
d7d543f2 250 if (card->state != CARD_STATE_DOWN)
4a71df50
FB		 251 return -EPERM;
252
253 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
254 qeth_clear_working_pool_list(card);
255 qeth_free_buffer_pool(card);
256 card->qdio.in_buf_pool.buf_count = bufcnt;
257 card->qdio.init_pool.buf_count = bufcnt;
258 return qeth_alloc_buffer_pool(card);
259}
76b11f8e 260EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
4a71df50 261
4601ba6c
SO		 262static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
263{
6d284bde
SO		 264 if (!q)
265 return;
266
267 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
4601ba6c
SO		 268 kfree(q);
269}
270
271static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
272{
273 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
274 int i;
275
276 if (!q)
277 return NULL;
278
6d284bde
SO		 279 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
280 kfree(q);
281 return NULL;
282 }
283
4601ba6c 284 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
6d284bde 285 q->bufs[i].buffer = q->qdio_bufs[i];
4601ba6c
SO		 286
287 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
288 return q;
289}
290
cef6ff22 291static int qeth_cq_init(struct qeth_card *card)
0da9581d
EL		 292{
293 int rc;
294
295 if (card->options.cq == QETH_CQ_ENABLED) {
57a688aa 296 QETH_CARD_TEXT(card, 2, "cqinit");
6d284bde
SO		 297 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
298 QDIO_MAX_BUFFERS_PER_Q);
0da9581d
EL		 299 card->qdio.c_q->next_buf_to_init = 127;
300 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
301 card->qdio.no_in_queues - 1, 0,
302 127);
303 if (rc) {
57a688aa 304 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
0da9581d
EL		 305 goto out;
306 }
307 }
308 rc = 0;
309out:
310 return rc;
311}
312
cef6ff22 313static int qeth_alloc_cq(struct qeth_card *card)
0da9581d
EL		 314{
315 int rc;
316
317 if (card->options.cq == QETH_CQ_ENABLED) {
318 int i;
319 struct qdio_outbuf_state *outbuf_states;
320
57a688aa 321 QETH_CARD_TEXT(card, 2, "cqon");
4601ba6c 322 card->qdio.c_q = qeth_alloc_qdio_queue();
0da9581d
EL		 323 if (!card->qdio.c_q) {
324 rc = -1;
325 goto kmsg_out;
326 }
0da9581d 327 card->qdio.no_in_queues = 2;
4a912f98 328 card->qdio.out_bufstates =
6396bb22
KC		 329 kcalloc(card->qdio.no_out_queues *
330 QDIO_MAX_BUFFERS_PER_Q,
331 sizeof(struct qdio_outbuf_state),
332 GFP_KERNEL);
0da9581d
EL		 333 outbuf_states = card->qdio.out_bufstates;
334 if (outbuf_states == NULL) {
335 rc = -1;
336 goto free_cq_out;
337 }
338 for (i = 0; i < card->qdio.no_out_queues; ++i) {
339 card->qdio.out_qs[i]->bufstates = outbuf_states;
340 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
341 }
342 } else {
57a688aa 343 QETH_CARD_TEXT(card, 2, "nocq");
0da9581d
EL		 344 card->qdio.c_q = NULL;
345 card->qdio.no_in_queues = 1;
346 }
57a688aa 347 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
0da9581d
EL		 348 rc = 0;
349out:
350 return rc;
351free_cq_out:
4601ba6c 352 qeth_free_qdio_queue(card->qdio.c_q);
0da9581d
EL		 353 card->qdio.c_q = NULL;
354kmsg_out:
355 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
356 goto out;
357}
358
cef6ff22 359static void qeth_free_cq(struct qeth_card *card)
0da9581d
EL		 360{
361 if (card->qdio.c_q) {
362 --card->qdio.no_in_queues;
4601ba6c 363 qeth_free_qdio_queue(card->qdio.c_q);
0da9581d
EL		 364 card->qdio.c_q = NULL;
365 }
366 kfree(card->qdio.out_bufstates);
367 card->qdio.out_bufstates = NULL;
368}
369
cef6ff22
JW		 370static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
371 int delayed)
372{
b3332930
FB		 373 enum iucv_tx_notify n;
374
375 switch (sbalf15) {
376 case 0:
377 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
378 break;
379 case 4:
380 case 16:
381 case 17:
382 case 18:
383 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
384 TX_NOTIFY_UNREACHABLE;
385 break;
386 default:
387 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
388 TX_NOTIFY_GENERALERROR;
389 break;
390 }
391
392 return n;
393}
394
cef6ff22
JW		 395static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
396 int forced_cleanup)
0da9581d 397{
72861ae7
EL		 398 if (q->card->options.cq != QETH_CQ_ENABLED)
399 return;
400
0da9581d
EL		 401 if (q->bufs[bidx]->next_pending != NULL) {
402 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
403 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
404
405 while (c) {
406 if (forced_cleanup ||
407 atomic_read(&c->state) ==
408 QETH_QDIO_BUF_HANDLED_DELAYED) {
409 struct qeth_qdio_out_buffer *f = c;
410 QETH_CARD_TEXT(f->q->card, 5, "fp");
411 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
b3332930
FB		 412 /* release here to avoid interleaving between
413 outbound tasklet and inbound tasklet
414 regarding notifications and lifecycle */
85e537d8 415 qeth_tx_complete_buf(c, forced_cleanup, 0);
b3332930 416
0da9581d 417 c = f->next_pending;
18af5c17 418 WARN_ON_ONCE(head->next_pending != f);
0da9581d
EL		 419 head->next_pending = c;
420 kmem_cache_free(qeth_qdio_outbuf_cache, f);
421 } else {
422 head = c;
423 c = c->next_pending;
424 }
425
426 }
427 }
72861ae7
EL		 428 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
429 QETH_QDIO_BUF_HANDLED_DELAYED)) {
430 /* for recovery situations */
72861ae7
EL		 431 qeth_init_qdio_out_buf(q, bidx);
432 QETH_CARD_TEXT(q->card, 2, "clprecov");
433 }
0da9581d
EL		 434}
435
436
cef6ff22
JW		 437static void qeth_qdio_handle_aob(struct qeth_card *card,
438 unsigned long phys_aob_addr)
439{
0da9581d
EL		 440 struct qaob *aob;
441 struct qeth_qdio_out_buffer *buffer;
b3332930 442 enum iucv_tx_notify notification;
ce28867f 443 unsigned int i;
0da9581d
EL		 444
445 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
446 QETH_CARD_TEXT(card, 5, "haob");
447 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
448 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
449 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
450
b3332930
FB		 451 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
452 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
453 notification = TX_NOTIFY_OK;
454 } else {
18af5c17
SR		 455 WARN_ON_ONCE(atomic_read(&buffer->state) !=
456 QETH_QDIO_BUF_PENDING);
b3332930
FB		 457 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
458 notification = TX_NOTIFY_DELAYED_OK;
459 }
460
461 if (aob->aorc != 0) {
462 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
463 notification = qeth_compute_cq_notification(aob->aorc, 1);
464 }
465 qeth_notify_skbs(buffer->q, buffer, notification);
466
ce28867f
JW		 467 /* Free dangling allocations. The attached skbs are handled by
468 * qeth_cleanup_handled_pending().
469 */
470 for (i = 0;
471 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
472 i++) {
473 if (aob->sba[i] && buffer->is_header[i])
474 kmem_cache_free(qeth_core_header_cache,
475 (void *) aob->sba[i]);
476 }
477 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
72861ae7 478
0da9581d
EL		 479 qdio_release_aob(aob);
480}
481
482static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
483{
484 return card->options.cq == QETH_CQ_ENABLED &&
485 card->qdio.c_q != NULL &&
486 queue != 0 &&
487 queue == card->qdio.no_in_queues - 1;
488}
489
40554895
JW		 490static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
491 void *data)
45ca2fd6
JW		 492{
493 ccw->cmd_code = cmd_code;
40554895 494 ccw->flags = flags | CCW_FLAG_SLI;
45ca2fd6
JW		 495 ccw->count = len;
496 ccw->cda = (__u32) __pa(data);
497}
498
17bf8c9b 499static int __qeth_issue_next_read(struct qeth_card *card)
4a71df50 500{
d9b9f40b
JW		 501 struct qeth_cmd_buffer *iob = card->read_cmd;
502 struct qeth_channel *channel = iob->channel;
503 struct ccw1 *ccw = __ccw_from_cmd(iob);
750b1625 504 int rc;
4a71df50 505
847a50fd 506 QETH_CARD_TEXT(card, 5, "issnxrd");
750b1625 507 if (channel->state != CH_STATE_UP)
4a71df50 508 return -EIO;
988a747d 509
d9b9f40b
JW		 510 memset(iob->data, 0, iob->length);
511 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
988a747d 512 iob->callback = qeth_issue_next_read_cb;
d9b9f40b
JW		 513 /* keep the cmd alive after completion: */
514 qeth_get_cmd(iob);
515
847a50fd 516 QETH_CARD_TEXT(card, 6, "noirqpnd");
40554895 517 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
4a71df50 518 if (rc) {
e19e5be8
JW		 519 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
520 rc, CARD_DEVID(card));
750b1625 521 atomic_set(&channel->irq_pending, 0);
c3b2218d 522 qeth_put_cmd(iob);
908abbb5 523 card->read_or_write_problem = 1;
4a71df50
FB		 524 qeth_schedule_recovery(card);
525 wake_up(&card->wait_q);
526 }
527 return rc;
528}
529
17bf8c9b
JW		 530static int qeth_issue_next_read(struct qeth_card *card)
531{
532 int ret;
533
534 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
535 ret = __qeth_issue_next_read(card);
536 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
537
538 return ret;
539}
540
308946b0
JW		 541static void qeth_enqueue_cmd(struct qeth_card *card,
542 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 543{
544 spin_lock_irq(&card->lock);
308946b0 545 list_add_tail(&iob->list, &card->cmd_waiter_list);
0951c6ba
JW		 546 spin_unlock_irq(&card->lock);
547}
548
308946b0
JW		 549static void qeth_dequeue_cmd(struct qeth_card *card,
550 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 551{
552 spin_lock_irq(&card->lock);
308946b0 553 list_del(&iob->list);
0951c6ba
JW		 554 spin_unlock_irq(&card->lock);
555}
556
308946b0 557void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
0951c6ba 558{
308946b0
JW		 559 iob->rc = reason;
560 complete(&iob->done);
0951c6ba 561}
308946b0 562EXPORT_SYMBOL_GPL(qeth_notify_cmd);
0951c6ba 563
d11ba0c4 564static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
4a71df50
FB		 565 struct qeth_card *card)
566{
048a7f8b 567 const char *ipa_name;
d11ba0c4 568 int com = cmd->hdr.command;
4a71df50 569 ipa_name = qeth_get_ipa_cmd_name(com);
e19e5be8 570
d11ba0c4 571 if (rc)
e19e5be8
JW		 572 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
573 ipa_name, com, CARD_DEVID(card), rc,
574 qeth_get_ipa_msg(rc));
d11ba0c4 575 else
e19e5be8
JW		 576 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
577 ipa_name, com, CARD_DEVID(card));
4a71df50
FB		 578}
579
580static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
d19b93f4 581 struct qeth_ipa_cmd *cmd)
4a71df50 582{
847a50fd 583 QETH_CARD_TEXT(card, 5, "chkipad");
d19b93f4
JW		 584
585 if (IS_IPA_REPLY(cmd)) {
586 if (cmd->hdr.command != IPA_CMD_SETCCID &&
587 cmd->hdr.command != IPA_CMD_DELCCID &&
588 cmd->hdr.command != IPA_CMD_MODCCID &&
589 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
590 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
591 return cmd;
592 }
593
594 /* handle unsolicited event: */
595 switch (cmd->hdr.command) {
596 case IPA_CMD_STOPLAN:
597 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
598 dev_err(&card->gdev->dev,
599 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
600 QETH_CARD_IFNAME(card));
dcef5cad 601 schedule_work(&card->close_dev_work);
4a71df50 602 } else {
d19b93f4
JW		 603 dev_warn(&card->gdev->dev,
604 "The link for interface %s on CHPID 0x%X failed\n",
605 QETH_CARD_IFNAME(card), card->info.chpid);
606 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
91cc98f5 607 netif_carrier_off(card->dev);
4a71df50 608 }
d19b93f4
JW		 609 return NULL;
610 case IPA_CMD_STARTLAN:
611 dev_info(&card->gdev->dev,
612 "The link for %s on CHPID 0x%X has been restored\n",
613 QETH_CARD_IFNAME(card), card->info.chpid);
d19b93f4
JW		 614 if (card->info.hwtrap)
615 card->info.hwtrap = 2;
616 qeth_schedule_recovery(card);
617 return NULL;
618 case IPA_CMD_SETBRIDGEPORT_IQD:
619 case IPA_CMD_SETBRIDGEPORT_OSA:
620 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
621 if (card->discipline->control_event_handler(card, cmd))
622 return cmd;
623 return NULL;
624 case IPA_CMD_MODCCID:
625 return cmd;
626 case IPA_CMD_REGISTER_LOCAL_ADDR:
627 QETH_CARD_TEXT(card, 3, "irla");
628 return NULL;
629 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
630 QETH_CARD_TEXT(card, 3, "urla");
631 return NULL;
632 default:
633 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
634 return cmd;
4a71df50 635 }
4a71df50
FB		 636}
637
638void qeth_clear_ipacmd_list(struct qeth_card *card)
639{
308946b0 640 struct qeth_cmd_buffer *iob;
4a71df50
FB		 641 unsigned long flags;
642
847a50fd 643 QETH_CARD_TEXT(card, 4, "clipalst");
4a71df50
FB		 644
645 spin_lock_irqsave(&card->lock, flags);
308946b0
JW		 646 list_for_each_entry(iob, &card->cmd_waiter_list, list)
647 qeth_notify_cmd(iob, -EIO);
4a71df50
FB		 648 spin_unlock_irqrestore(&card->lock, flags);
649}
650EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
651
5113fec0
UB		 652static int qeth_check_idx_response(struct qeth_card *card,
653 unsigned char *buffer)
4a71df50 654{
d11ba0c4 655 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
4a71df50 656 if ((buffer[2] & 0xc0) == 0xc0) {
e19e5be8 657 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
d857e111 658 buffer[4]);
847a50fd
CO		 659 QETH_CARD_TEXT(card, 2, "ckidxres");
660 QETH_CARD_TEXT(card, 2, " idxterm");
661 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
5113fec0
UB		 662 if (buffer[4] == 0xf6) {
663 dev_err(&card->gdev->dev,
664 "The qeth device is not configured "
665 "for the OSI layer required by z/VM\n");
666 return -EPERM;
667 }
4a71df50
FB		 668 return -EIO;
669 }
670 return 0;
671}
672
c3b2218d 673void qeth_put_cmd(struct qeth_cmd_buffer *iob)
d9b9f40b
JW		 674{
675 if (refcount_dec_and_test(&iob->ref_count)) {
d9b9f40b
JW		 676 kfree(iob->data);
677 kfree(iob);
678 }
679}
c3b2218d 680EXPORT_SYMBOL_GPL(qeth_put_cmd);
4a71df50 681
8f6637b8 682static void qeth_release_buffer_cb(struct qeth_card *card,
12fc286f
JW		 683 struct qeth_cmd_buffer *iob,
684 unsigned int data_length)
8f6637b8 685{
c3b2218d 686 qeth_put_cmd(iob);
8f6637b8
JW		 687}
688
54daaca7
JW		 689static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
690{
308946b0 691 qeth_notify_cmd(iob, rc);
c3b2218d 692 qeth_put_cmd(iob);
4a71df50 693}
4a71df50 694
a59d121d
JW		 695struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
696 unsigned int length, unsigned int ccws,
697 long timeout)
40554895
JW		 698{
699 struct qeth_cmd_buffer *iob;
700
701 if (length > QETH_BUFSIZE)
702 return NULL;
703
704 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
705 if (!iob)
706 return NULL;
707
708 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
709 GFP_KERNEL | GFP_DMA);
710 if (!iob->data) {
711 kfree(iob);
712 return NULL;
713 }
714
308946b0
JW		 715 init_completion(&iob->done);
716 spin_lock_init(&iob->lock);
717 INIT_LIST_HEAD(&iob->list);
d9b9f40b 718 refcount_set(&iob->ref_count, 1);
40554895
JW		 719 iob->channel = channel;
720 iob->timeout = timeout;
721 iob->length = length;
722 return iob;
723}
a59d121d 724EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
40554895 725
988a747d 726static void qeth_issue_next_read_cb(struct qeth_card *card,
12fc286f
JW		 727 struct qeth_cmd_buffer *iob,
728 unsigned int data_length)
4a71df50 729{
308946b0 730 struct qeth_cmd_buffer *request = NULL;
d19b93f4 731 struct qeth_ipa_cmd *cmd = NULL;
0951c6ba 732 struct qeth_reply *reply = NULL;
308946b0 733 struct qeth_cmd_buffer *tmp;
4a71df50 734 unsigned long flags;
5113fec0 735 int rc = 0;
4a71df50 736
847a50fd 737 QETH_CARD_TEXT(card, 4, "sndctlcb");
5113fec0
UB		 738 rc = qeth_check_idx_response(card, iob->data);
739 switch (rc) {
740 case 0:
741 break;
742 case -EIO:
4a71df50 743 qeth_clear_ipacmd_list(card);
5113fec0 744 qeth_schedule_recovery(card);
01fc3e86 745 /* fall through */
5113fec0 746 default:
4a71df50
FB		 747 goto out;
748 }
749
d19b93f4
JW		 750 if (IS_IPA(iob->data)) {
751 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
752 cmd = qeth_check_ipa_data(card, cmd);
d782d80f
JW		 753 if (!cmd)
754 goto out;
755 if (IS_OSN(card) && card->osn_info.assist_cb &&
756 cmd->hdr.command != IPA_CMD_STARTLAN) {
757 card->osn_info.assist_cb(card->dev, cmd);
758 goto out;
759 }
760 } else {
761 /* non-IPA commands should only flow during initialization */
762 if (card->state != CARD_STATE_DOWN)
763 goto out;
4a71df50
FB		 764 }
765
0951c6ba 766 /* match against pending cmd requests */
4a71df50 767 spin_lock_irqsave(&card->lock, flags);
308946b0
JW		 768 list_for_each_entry(tmp, &card->cmd_waiter_list, list) {
769 if (!IS_IPA(tmp->data) ||
770 __ipa_cmd(tmp)->hdr.seqno == cmd->hdr.seqno) {
771 request = tmp;
0951c6ba 772 /* take the object outside the lock */
308946b0 773 qeth_get_cmd(request);
0951c6ba 774 break;
4a71df50
FB		 775 }
776 }
777 spin_unlock_irqrestore(&card->lock, flags);
0951c6ba 778
308946b0 779 if (!request)
0951c6ba
JW		 780 goto out;
781
308946b0 782 reply = &request->reply;
4b7ae122
JW		 783 if (!reply->callback) {
784 rc = 0;
072f7940
JW		 785 goto no_callback;
786 }
787
308946b0
JW		 788 spin_lock_irqsave(&request->lock, flags);
789 if (request->rc)
072f7940 790 /* Bail out when the requestor has already left: */
308946b0 791 rc = request->rc;
7c5f8ffb
JW		 792 else
793 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
794 (unsigned long)iob);
308946b0 795 spin_unlock_irqrestore(&request->lock, flags);
0951c6ba 796
072f7940 797no_callback:
61e04465 798 if (rc <= 0)
308946b0
JW		 799 qeth_notify_cmd(request, rc);
800 qeth_put_cmd(request);
4a71df50
FB		 801out:
802 memcpy(&card->seqno.pdu_hdr_ack,
803 QETH_PDU_HEADER_SEQ_NO(iob->data),
804 QETH_SEQ_NO_LENGTH);
c3b2218d 805 qeth_put_cmd(iob);
7cbc9e8f 806 __qeth_issue_next_read(card);
4a71df50
FB		 807}
808
4a71df50
FB		 809static int qeth_set_thread_start_bit(struct qeth_card *card,
810 unsigned long thread)
811{
812 unsigned long flags;
813
814 spin_lock_irqsave(&card->thread_mask_lock, flags);
815 if (!(card->thread_allowed_mask & thread) ||
816 (card->thread_start_mask & thread)) {
817 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
818 return -EPERM;
819 }
820 card->thread_start_mask |= thread;
821 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
822 return 0;
823}
824
825void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
826{
827 unsigned long flags;
828
829 spin_lock_irqsave(&card->thread_mask_lock, flags);
830 card->thread_start_mask &= ~thread;
831 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
832 wake_up(&card->wait_q);
833}
834EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
835
836void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
837{
838 unsigned long flags;
839
840 spin_lock_irqsave(&card->thread_mask_lock, flags);
841 card->thread_running_mask &= ~thread;
842 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1063e432 843 wake_up_all(&card->wait_q);
4a71df50
FB		 844}
845EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
846
847static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
848{
849 unsigned long flags;
850 int rc = 0;
851
852 spin_lock_irqsave(&card->thread_mask_lock, flags);
853 if (card->thread_start_mask & thread) {
854 if ((card->thread_allowed_mask & thread) &&
855 !(card->thread_running_mask & thread)) {
856 rc = 1;
857 card->thread_start_mask &= ~thread;
858 card->thread_running_mask |= thread;
859 } else
860 rc = -EPERM;
861 }
862 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
863 return rc;
864}
865
866int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
867{
868 int rc = 0;
869
870 wait_event(card->wait_q,
871 (rc = __qeth_do_run_thread(card, thread)) >= 0);
872 return rc;
873}
874EXPORT_SYMBOL_GPL(qeth_do_run_thread);
875
876void qeth_schedule_recovery(struct qeth_card *card)
877{
847a50fd 878 QETH_CARD_TEXT(card, 2, "startrec");
4a71df50
FB		 879 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
880 schedule_work(&card->kernel_thread_starter);
881}
882EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
883
8d908eb0
JW		 884static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
885 struct irb *irb)
4a71df50
FB		 886{
887 int dstat, cstat;
888 char *sense;
889
890 sense = (char *) irb->ecw;
23d805b6
PO		 891 cstat = irb->scsw.cmd.cstat;
892 dstat = irb->scsw.cmd.dstat;
4a71df50
FB		 893
894 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
895 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
896 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
847a50fd 897 QETH_CARD_TEXT(card, 2, "CGENCHK");
74eacdb9
FB		 898 dev_warn(&cdev->dev, "The qeth device driver "
899 "failed to recover an error on the device\n");
e19e5be8
JW		 900 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
901 CCW_DEVID(cdev), dstat, cstat);
4a71df50
FB		 902 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
903 16, 1, irb, 64, 1);
2f3c269d 904 return -EIO;
4a71df50
FB		 905 }
906
907 if (dstat & DEV_STAT_UNIT_CHECK) {
908 if (sense[SENSE_RESETTING_EVENT_BYTE] &
909 SENSE_RESETTING_EVENT_FLAG) {
847a50fd 910 QETH_CARD_TEXT(card, 2, "REVIND");
2f3c269d 911 return -EIO;
4a71df50
FB		 912 }
913 if (sense[SENSE_COMMAND_REJECT_BYTE] &
914 SENSE_COMMAND_REJECT_FLAG) {
847a50fd 915 QETH_CARD_TEXT(card, 2, "CMDREJi");
2f3c269d 916 return -EIO;
4a71df50
FB		 917 }
918 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
847a50fd 919 QETH_CARD_TEXT(card, 2, "AFFE");
2f3c269d 920 return -EIO;
4a71df50
FB		 921 }
922 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
847a50fd 923 QETH_CARD_TEXT(card, 2, "ZEROSEN");
4a71df50
FB		 924 return 0;
925 }
847a50fd 926 QETH_CARD_TEXT(card, 2, "DGENCHK");
2f3c269d 927 return -EIO;
4a71df50
FB		 928 }
929 return 0;
930}
931
54daaca7 932static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
2066e1db 933 struct irb *irb)
4a71df50 934{
8d908eb0 935 if (!IS_ERR(irb))
4a71df50
FB		 936 return 0;
937
938 switch (PTR_ERR(irb)) {
939 case -EIO:
e19e5be8
JW		 940 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
941 CCW_DEVID(cdev));
847a50fd
CO		 942 QETH_CARD_TEXT(card, 2, "ckirberr");
943 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
54daaca7 944 return -EIO;
4a71df50 945 case -ETIMEDOUT:
74eacdb9
FB		 946 dev_warn(&cdev->dev, "A hardware operation timed out"
947 " on the device\n");
847a50fd
CO		 948 QETH_CARD_TEXT(card, 2, "ckirberr");
949 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
54daaca7 950 return -ETIMEDOUT;
4a71df50 951 default:
e19e5be8
JW		 952 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
953 PTR_ERR(irb), CCW_DEVID(cdev));
847a50fd
CO		 954 QETH_CARD_TEXT(card, 2, "ckirberr");
955 QETH_CARD_TEXT(card, 2, " rc???");
54daaca7 956 return PTR_ERR(irb);
4a71df50 957 }
4a71df50
FB		 958}
959
960static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
961 struct irb *irb)
962{
963 int rc;
964 int cstat, dstat;
db71bbbd 965 struct qeth_cmd_buffer *iob = NULL;
8d908eb0 966 struct ccwgroup_device *gdev;
4a71df50
FB		 967 struct qeth_channel *channel;
968 struct qeth_card *card;
4a71df50 969
8d908eb0
JW		 970 /* while we hold the ccwdev lock, this stays valid: */
971 gdev = dev_get_drvdata(&cdev->dev);
972 card = dev_get_drvdata(&gdev->dev);
4a71df50
FB		 973 if (!card)
974 return;
975
847a50fd
CO		 976 QETH_CARD_TEXT(card, 5, "irq");
977
4a71df50
FB		 978 if (card->read.ccwdev == cdev) {
979 channel = &card->read;
847a50fd 980 QETH_CARD_TEXT(card, 5, "read");
4a71df50
FB		 981 } else if (card->write.ccwdev == cdev) {
982 channel = &card->write;
847a50fd 983 QETH_CARD_TEXT(card, 5, "write");
4a71df50
FB		 984 } else {
985 channel = &card->data;
847a50fd 986 QETH_CARD_TEXT(card, 5, "data");
4a71df50 987 }
db71bbbd
JW		 988
989 if (qeth_intparm_is_iob(intparm))
990 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
991
2066e1db 992 rc = qeth_check_irb_error(card, cdev, irb);
54daaca7 993 if (rc) {
db71bbbd
JW		 994 /* IO was terminated, free its resources. */
995 if (iob)
54daaca7 996 qeth_cancel_cmd(iob, rc);
db71bbbd
JW		 997 atomic_set(&channel->irq_pending, 0);
998 wake_up(&card->wait_q);
999 return;
1000 }
1001
4a71df50
FB		 1002 atomic_set(&channel->irq_pending, 0);
1003
23d805b6 1004 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
4a71df50
FB		 1005 channel->state = CH_STATE_STOPPED;
1006
23d805b6 1007 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
4a71df50
FB		 1008 channel->state = CH_STATE_HALTED;
1009
4a71df50 1010 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
847a50fd 1011 QETH_CARD_TEXT(card, 6, "clrchpar");
4a71df50
FB		 1012 /* we don't have to handle this further */
1013 intparm = 0;
1014 }
1015 if (intparm == QETH_HALT_CHANNEL_PARM) {
847a50fd 1016 QETH_CARD_TEXT(card, 6, "hltchpar");
4a71df50
FB		 1017 /* we don't have to handle this further */
1018 intparm = 0;
1019 }
db71bbbd
JW		 1020
1021 cstat = irb->scsw.cmd.cstat;
1022 dstat = irb->scsw.cmd.dstat;
1023
4a71df50
FB		 1024 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1025 (dstat & DEV_STAT_UNIT_CHECK) ||
1026 (cstat)) {
1027 if (irb->esw.esw0.erw.cons) {
74eacdb9
FB		 1028 dev_warn(&channel->ccwdev->dev,
1029 "The qeth device driver failed to recover "
1030 "an error on the device\n");
e19e5be8
JW		 1031 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1032 CCW_DEVID(channel->ccwdev), cstat,
1033 dstat);
4a71df50
FB		 1034 print_hex_dump(KERN_WARNING, "qeth: irb ",
1035 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1036 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1037 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1038 }
2066e1db 1039
8d908eb0 1040 rc = qeth_get_problem(card, cdev, irb);
4a71df50 1041 if (rc) {
a6c3d939 1042 card->read_or_write_problem = 1;
5065b2dd 1043 if (iob)
54daaca7 1044 qeth_cancel_cmd(iob, rc);
28a7e4c9 1045 qeth_clear_ipacmd_list(card);
4a71df50
FB		 1046 qeth_schedule_recovery(card);
1047 goto out;
1048 }
1049 }
1050
12fc286f
JW		 1051 if (iob) {
1052 /* sanity check: */
1053 if (irb->scsw.cmd.count > iob->length) {
1054 qeth_cancel_cmd(iob, -EIO);
1055 goto out;
1056 }
1057 if (iob->callback)
1058 iob->callback(card, iob,
1059 iob->length - irb->scsw.cmd.count);
1060 }
4a71df50 1061
4a71df50
FB		 1062out:
1063 wake_up(&card->wait_q);
1064 return;
1065}
1066
b3332930 1067static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
0da9581d 1068 struct qeth_qdio_out_buffer *buf,
b3332930 1069 enum iucv_tx_notify notification)
4a71df50 1070{
4a71df50
FB		 1071 struct sk_buff *skb;
1072
dc149e37 1073 skb_queue_walk(&buf->skb_list, skb) {
b3332930
FB		 1074 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1075 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
6a3123d0
JW		 1076 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1077 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
b3332930 1078 }
b3332930
FB		 1079}
1080
85e537d8
JW		 1081static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
1082 int budget)
b3332930 1083{
eeac0e20 1084 struct qeth_qdio_out_q *queue = buf->q;
104b4859
JW		 1085 struct sk_buff *skb;
1086
72861ae7 1087 /* release may never happen from within CQ tasklet scope */
18af5c17 1088 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
4a71df50 1089
6a3123d0 1090 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
eeac0e20
JW		 1091 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR);
1092
1093 /* Empty buffer? */
1094 if (buf->next_element_to_fill == 0)
1095 return;
1096
1097 QETH_TXQ_STAT_INC(queue, bufs);
1098 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1099 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1100 unsigned int bytes = qdisc_pkt_len(skb);
1101 bool is_tso = skb_is_gso(skb);
1102 unsigned int packets;
1103
1104 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1105 if (error) {
1106 QETH_TXQ_STAT_ADD(queue, tx_errors, packets);
1107 } else {
1108 QETH_TXQ_STAT_ADD(queue, tx_packets, packets);
1109 QETH_TXQ_STAT_ADD(queue, tx_bytes, bytes);
1110 if (skb->ip_summed == CHECKSUM_PARTIAL)
1111 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1112 if (skb_is_nonlinear(skb))
1113 QETH_TXQ_STAT_INC(queue, skbs_sg);
1114 if (is_tso) {
1115 QETH_TXQ_STAT_INC(queue, skbs_tso);
1116 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1117 }
1118 }
6a3123d0 1119
85e537d8 1120 napi_consume_skb(skb, budget);
eeac0e20 1121 }
b3332930
FB		 1122}
1123
1124static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
eeac0e20 1125 struct qeth_qdio_out_buffer *buf,
85e537d8 1126 bool error, int budget)
b3332930
FB		 1127{
1128 int i;
1129
1130 /* is PCI flag set on buffer? */
1131 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1132 atomic_dec(&queue->set_pci_flags_count);
1133
85e537d8 1134 qeth_tx_complete_buf(buf, error, budget);
3b346c18 1135
4e26c5fe 1136 for (i = 0; i < queue->max_elements; ++i) {
683d718a
FB		 1137 if (buf->buffer->element[i].addr && buf->is_header[i])
1138 kmem_cache_free(qeth_core_header_cache,
1139 buf->buffer->element[i].addr);
1140 buf->is_header[i] = 0;
4a71df50 1141 }
3b346c18 1142
4e26c5fe 1143 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
4a71df50 1144 buf->next_element_to_fill = 0;
96bd6c94 1145 buf->bytes = 0;
3b346c18 1146 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
0da9581d
EL		 1147}
1148
41c47da3 1149static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
0da9581d
EL		 1150{
1151 int j;
1152
1153 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1154 if (!q->bufs[j])
1155 continue;
72861ae7 1156 qeth_cleanup_handled_pending(q, j, 1);
85e537d8 1157 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
0da9581d
EL		 1158 if (free) {
1159 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1160 q->bufs[j] = NULL;
1161 }
1162 }
4a71df50
FB		 1163}
1164
41c47da3 1165void qeth_drain_output_queues(struct qeth_card *card)
4a71df50 1166{
0da9581d 1167 int i;
4a71df50 1168
847a50fd 1169 QETH_CARD_TEXT(card, 2, "clearqdbf");
4a71df50 1170 /* clear outbound buffers to free skbs */
0da9581d 1171 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3
JW		 1172 if (card->qdio.out_qs[i])
1173 qeth_drain_output_queue(card->qdio.out_qs[i], false);
0da9581d 1174 }
4a71df50 1175}
41c47da3 1176EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
4a71df50
FB		 1177
1178static void qeth_free_buffer_pool(struct qeth_card *card)
1179{
1180 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1181 int i = 0;
4a71df50
FB		 1182 list_for_each_entry_safe(pool_entry, tmp,
1183 &card->qdio.init_pool.entry_list, init_list){
1184 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1185 free_page((unsigned long)pool_entry->elements[i]);
1186 list_del(&pool_entry->init_list);
1187 kfree(pool_entry);
1188 }
1189}
1190
4a71df50
FB		 1191static void qeth_clean_channel(struct qeth_channel *channel)
1192{
121ca39a 1193 struct ccw_device *cdev = channel->ccwdev;
4a71df50 1194
d11ba0c4 1195 QETH_DBF_TEXT(SETUP, 2, "freech");
121ca39a
JW		 1196
1197 spin_lock_irq(get_ccwdev_lock(cdev));
1198 cdev->handler = NULL;
1199 spin_unlock_irq(get_ccwdev_lock(cdev));
4a71df50
FB		 1200}
1201
c3b2218d 1202static void qeth_setup_channel(struct qeth_channel *channel)
121ca39a
JW		 1203{
1204 struct ccw_device *cdev = channel->ccwdev;
121ca39a
JW		 1205
1206 QETH_DBF_TEXT(SETUP, 2, "setupch");
1207
121ca39a
JW		 1208 channel->state = CH_STATE_DOWN;
1209 atomic_set(&channel->irq_pending, 0);
121ca39a
JW		 1210
1211 spin_lock_irq(get_ccwdev_lock(cdev));
1212 cdev->handler = qeth_irq;
1213 spin_unlock_irq(get_ccwdev_lock(cdev));
121ca39a
JW		 1214}
1215
bd966839 1216static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
725b9c04 1217{
73dc2daf 1218 unsigned int count = single ? 1 : card->dev->num_tx_queues;
bd966839 1219 int rc;
725b9c04 1220
73dc2daf 1221 rtnl_lock();
bd966839 1222 rc = netif_set_real_num_tx_queues(card->dev, count);
73dc2daf 1223 rtnl_unlock();
725b9c04 1224
bd966839
JW		 1225 if (rc)
1226 return rc;
1227
73dc2daf 1228 if (card->qdio.no_out_queues == count)
bd966839 1229 return 0;
725b9c04 1230
73dc2daf 1231 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
41c47da3 1232 qeth_free_qdio_queues(card);
73dc2daf
JW		 1233
1234 if (count == 1)
1235 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1236
1237 card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE;
1238 card->qdio.no_out_queues = count;
bd966839 1239 return 0;
725b9c04
SO		 1240}
1241
a4cdc9ba 1242static int qeth_update_from_chp_desc(struct qeth_card *card)
4a71df50 1243{
4a71df50 1244 struct ccw_device *ccwdev;
ded27d8d 1245 struct channel_path_desc_fmt0 *chp_dsc;
bd966839 1246 int rc = 0;
4a71df50 1247
57a688aa 1248 QETH_CARD_TEXT(card, 2, "chp_desc");
4a71df50
FB		 1249
1250 ccwdev = card->data.ccwdev;
725b9c04
SO		 1251 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1252 if (!chp_dsc)
a4cdc9ba 1253 return -ENOMEM;
725b9c04
SO		 1254
1255 card->info.func_level = 0x4100 + chp_dsc->desc;
725b9c04 1256
73dc2daf
JW		 1257 if (IS_OSD(card) || IS_OSX(card))
1258 /* CHPP field bit 6 == 1 -> single queue */
bd966839 1259 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
73dc2daf 1260
725b9c04 1261 kfree(chp_dsc);
57a688aa
JW		 1262 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1263 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
bd966839 1264 return rc;
4a71df50
FB		 1265}
1266
1267static void qeth_init_qdio_info(struct qeth_card *card)
1268{
57a688aa 1269 QETH_CARD_TEXT(card, 4, "intqdinf");
4a71df50 1270 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
95f4d8b7
JW		 1271 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1272 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
95f4d8b7 1273
4a71df50 1274 /* inbound */
ed2e93ef 1275 card->qdio.no_in_queues = 1;
4a71df50 1276 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
379ac99e 1277 if (IS_IQD(card))
dcf4ae2d
FB		 1278 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1279 else
1280 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
4a71df50
FB		 1281 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1282 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1283 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1284}
1285
95f4d8b7 1286static void qeth_set_initial_options(struct qeth_card *card)
4a71df50
FB		 1287{
1288 card->options.route4.type = NO_ROUTER;
1289 card->options.route6.type = NO_ROUTER;
4a71df50 1290 card->options.rx_sg_cb = QETH_RX_SG_CB;
d64ecc22 1291 card->options.isolation = ISOLATION_MODE_NONE;
0da9581d 1292 card->options.cq = QETH_CQ_DISABLED;
4fda3354 1293 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
4a71df50
FB		 1294}
1295
1296static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1297{
1298 unsigned long flags;
1299 int rc = 0;
1300
1301 spin_lock_irqsave(&card->thread_mask_lock, flags);
847a50fd 1302 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
4a71df50
FB		 1303 (u8) card->thread_start_mask,
1304 (u8) card->thread_allowed_mask,
1305 (u8) card->thread_running_mask);
1306 rc = (card->thread_start_mask & thread);
1307 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1308 return rc;
1309}
1310
1311static void qeth_start_kernel_thread(struct work_struct *work)
1312{
3f36b890 1313 struct task_struct *ts;
4a71df50
FB		 1314 struct qeth_card *card = container_of(work, struct qeth_card,
1315 kernel_thread_starter);
847a50fd 1316 QETH_CARD_TEXT(card , 2, "strthrd");
4a71df50
FB		 1317
1318 if (card->read.state != CH_STATE_UP &&
1319 card->write.state != CH_STATE_UP)
1320 return;
3f36b890 1321 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
c041f2d4 1322 ts = kthread_run(card->discipline->recover, (void *)card,
4a71df50 1323 "qeth_recover");
3f36b890
FB		 1324 if (IS_ERR(ts)) {
1325 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1326 qeth_clear_thread_running_bit(card,
1327 QETH_RECOVER_THREAD);
1328 }
1329 }
4a71df50
FB		 1330}
1331
bca51650 1332static void qeth_buffer_reclaim_work(struct work_struct *);
95f4d8b7 1333static void qeth_setup_card(struct qeth_card *card)
4a71df50 1334{
57a688aa 1335 QETH_CARD_TEXT(card, 2, "setupcrd");
4a71df50 1336
95f4d8b7 1337 card->info.type = CARD_RDEV(card)->id.driver_info;
4a71df50 1338 card->state = CARD_STATE_DOWN;
4a71df50 1339 spin_lock_init(&card->lock);
4a71df50 1340 spin_lock_init(&card->thread_mask_lock);
c4949f07 1341 mutex_init(&card->conf_mutex);
9dc48ccc 1342 mutex_init(&card->discipline_mutex);
4a71df50 1343 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
4a71df50
FB		 1344 INIT_LIST_HEAD(&card->cmd_waiter_list);
1345 init_waitqueue_head(&card->wait_q);
95f4d8b7 1346 qeth_set_initial_options(card);
4a71df50
FB		 1347 /* IP address takeover */
1348 INIT_LIST_HEAD(&card->ipato.entries);
4a71df50 1349 qeth_init_qdio_info(card);
b3332930 1350 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
0f54761d 1351 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
4a71df50
FB		 1352}
1353
6bcac508
MS		 1354static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1355{
1356 struct qeth_card *card = container_of(slr, struct qeth_card,
1357 qeth_service_level);
0d788c7d
KDW		 1358 if (card->info.mcl_level[0])
1359 seq_printf(m, "qeth: %s firmware level %s\n",
1360 CARD_BUS_ID(card), card->info.mcl_level);
6bcac508
MS		 1361}
1362
121ca39a 1363static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
4a71df50
FB		 1364{
1365 struct qeth_card *card;
1366
d11ba0c4 1367 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
f15cdaf2 1368 card = kzalloc(sizeof(*card), GFP_KERNEL);
4a71df50 1369 if (!card)
76b11f8e 1370 goto out;
d11ba0c4 1371 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
121ca39a
JW		 1372
1373 card->gdev = gdev;
a2eb0ad5 1374 dev_set_drvdata(&gdev->dev, card);
121ca39a
JW		 1375 CARD_RDEV(card) = gdev->cdev[0];
1376 CARD_WDEV(card) = gdev->cdev[1];
1377 CARD_DDEV(card) = gdev->cdev[2];
c0a2e4d1 1378
7686e4b6
JW		 1379 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1380 dev_name(&gdev->dev));
c0a2e4d1
JW		 1381 if (!card->event_wq)
1382 goto out_wq;
d9b9f40b
JW		 1383
1384 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1385 if (!card->read_cmd)
1386 goto out_read_cmd;
c3b2218d
JW		 1387
1388 qeth_setup_channel(&card->read);
1389 qeth_setup_channel(&card->write);
1390 qeth_setup_channel(&card->data);
6bcac508
MS		 1391 card->qeth_service_level.seq_print = qeth_core_sl_print;
1392 register_service_level(&card->qeth_service_level);
4a71df50 1393 return card;
76b11f8e 1394
d9b9f40b 1395out_read_cmd:
c0a2e4d1
JW		 1396 destroy_workqueue(card->event_wq);
1397out_wq:
a2eb0ad5 1398 dev_set_drvdata(&gdev->dev, NULL);
76b11f8e
UB		 1399 kfree(card);
1400out:
1401 return NULL;
4a71df50
FB		 1402}
1403
8d908eb0
JW		 1404static int qeth_clear_channel(struct qeth_card *card,
1405 struct qeth_channel *channel)
4a71df50 1406{
4a71df50
FB		 1407 int rc;
1408
847a50fd 1409 QETH_CARD_TEXT(card, 3, "clearch");
ed47155b 1410 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1411 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
ed47155b 1412 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1413
1414 if (rc)
1415 return rc;
1416 rc = wait_event_interruptible_timeout(card->wait_q,
1417 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1418 if (rc == -ERESTARTSYS)
1419 return rc;
1420 if (channel->state != CH_STATE_STOPPED)
1421 return -ETIME;
1422 channel->state = CH_STATE_DOWN;
1423 return 0;
1424}
1425
8d908eb0
JW		 1426static int qeth_halt_channel(struct qeth_card *card,
1427 struct qeth_channel *channel)
4a71df50 1428{
4a71df50
FB		 1429 int rc;
1430
847a50fd 1431 QETH_CARD_TEXT(card, 3, "haltch");
ed47155b 1432 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1433 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
ed47155b 1434 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1435
1436 if (rc)
1437 return rc;
1438 rc = wait_event_interruptible_timeout(card->wait_q,
1439 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1440 if (rc == -ERESTARTSYS)
1441 return rc;
1442 if (channel->state != CH_STATE_HALTED)
1443 return -ETIME;
1444 return 0;
1445}
1446
1447static int qeth_halt_channels(struct qeth_card *card)
1448{
1449 int rc1 = 0, rc2 = 0, rc3 = 0;
1450
847a50fd 1451 QETH_CARD_TEXT(card, 3, "haltchs");
8d908eb0
JW		 1452 rc1 = qeth_halt_channel(card, &card->read);
1453 rc2 = qeth_halt_channel(card, &card->write);
1454 rc3 = qeth_halt_channel(card, &card->data);
4a71df50
FB		 1455 if (rc1)
1456 return rc1;
1457 if (rc2)
1458 return rc2;
1459 return rc3;
1460}
1461
1462static int qeth_clear_channels(struct qeth_card *card)
1463{
1464 int rc1 = 0, rc2 = 0, rc3 = 0;
1465
847a50fd 1466 QETH_CARD_TEXT(card, 3, "clearchs");
8d908eb0
JW		 1467 rc1 = qeth_clear_channel(card, &card->read);
1468 rc2 = qeth_clear_channel(card, &card->write);
1469 rc3 = qeth_clear_channel(card, &card->data);
4a71df50
FB		 1470 if (rc1)
1471 return rc1;
1472 if (rc2)
1473 return rc2;
1474 return rc3;
1475}
1476
1477static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1478{
1479 int rc = 0;
1480
847a50fd 1481 QETH_CARD_TEXT(card, 3, "clhacrd");
4a71df50
FB		 1482
1483 if (halt)
1484 rc = qeth_halt_channels(card);
1485 if (rc)
1486 return rc;
1487 return qeth_clear_channels(card);
1488}
1489
1490int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1491{
1492 int rc = 0;
1493
847a50fd 1494 QETH_CARD_TEXT(card, 3, "qdioclr");
4a71df50
FB		 1495 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1496 QETH_QDIO_CLEANING)) {
1497 case QETH_QDIO_ESTABLISHED:
379ac99e 1498 if (IS_IQD(card))
cc961d40 1499 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1500 QDIO_FLAG_CLEANUP_USING_HALT);
1501 else
cc961d40 1502 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1503 QDIO_FLAG_CLEANUP_USING_CLEAR);
1504 if (rc)
847a50fd 1505 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
4a71df50
FB		 1506 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1507 break;
1508 case QETH_QDIO_CLEANING:
1509 return rc;
1510 default:
1511 break;
1512 }
1513 rc = qeth_clear_halt_card(card, use_halt);
1514 if (rc)
847a50fd 1515 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
4a71df50
FB		 1516 return rc;
1517}
1518EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1519
615dff22
JW		 1520static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1521{
1522 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1523 struct diag26c_vnic_resp *response = NULL;
1524 struct diag26c_vnic_req *request = NULL;
1525 struct ccw_dev_id id;
1526 char userid[80];
1527 int rc = 0;
1528
57a688aa 1529 QETH_CARD_TEXT(card, 2, "vmlayer");
615dff22
JW		 1530
1531 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1532 if (rc)
1533 goto out;
1534
1535 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1536 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1537 if (!request || !response) {
1538 rc = -ENOMEM;
1539 goto out;
1540 }
1541
1542 ccw_device_get_id(CARD_RDEV(card), &id);
1543 request->resp_buf_len = sizeof(*response);
1544 request->resp_version = DIAG26C_VERSION6_VM65918;
1545 request->req_format = DIAG26C_VNIC_INFO;
1546 ASCEBC(userid, 8);
1547 memcpy(&request->sys_name, userid, 8);
1548 request->devno = id.devno;
1549
1550 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1551 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1552 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1553 if (rc)
1554 goto out;
1555 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1556
1557 if (request->resp_buf_len < sizeof(*response) ||
1558 response->version != request->resp_version) {
1559 rc = -EIO;
1560 goto out;
1561 }
1562
1563 if (response->protocol == VNIC_INFO_PROT_L2)
1564 disc = QETH_DISCIPLINE_LAYER2;
1565 else if (response->protocol == VNIC_INFO_PROT_L3)
1566 disc = QETH_DISCIPLINE_LAYER3;
1567
1568out:
1569 kfree(response);
1570 kfree(request);
1571 if (rc)
57a688aa 1572 QETH_CARD_TEXT_(card, 2, "err%x", rc);
615dff22
JW		 1573 return disc;
1574}
1575
c70eb09d
JW		 1576/* Determine whether the device requires a specific layer discipline */
1577static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1578{
615dff22
JW		 1579 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1580
379ac99e 1581 if (IS_OSM(card) || IS_OSN(card))
615dff22 1582 disc = QETH_DISCIPLINE_LAYER2;
379ac99e
JW		 1583 else if (IS_VM_NIC(card))
1584 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1585 qeth_vm_detect_layer(card);
615dff22
JW		 1586
1587 switch (disc) {
1588 case QETH_DISCIPLINE_LAYER2:
57a688aa 1589 QETH_CARD_TEXT(card, 3, "force l2");
615dff22
JW		 1590 break;
1591 case QETH_DISCIPLINE_LAYER3:
57a688aa 1592 QETH_CARD_TEXT(card, 3, "force l3");
615dff22
JW		 1593 break;
1594 default:
57a688aa 1595 QETH_CARD_TEXT(card, 3, "force no");
c70eb09d
JW		 1596 }
1597
615dff22 1598 return disc;
c70eb09d
JW		 1599}
1600
09ac887f 1601static void qeth_set_blkt_defaults(struct qeth_card *card)
a60389ab 1602{
57a688aa 1603 QETH_CARD_TEXT(card, 2, "cfgblkt");
a60389ab 1604
09ac887f 1605 if (card->info.use_v1_blkt) {
a60389ab
EL		 1606 card->info.blkt.time_total = 0;
1607 card->info.blkt.inter_packet = 0;
1608 card->info.blkt.inter_packet_jumbo = 0;
a0c98523
UB		 1609 } else {
1610 card->info.blkt.time_total = 250;
1611 card->info.blkt.inter_packet = 5;
1612 card->info.blkt.inter_packet_jumbo = 15;
a60389ab 1613 }
4a71df50
FB		 1614}
1615
1616static void qeth_init_tokens(struct qeth_card *card)
1617{
1618 card->token.issuer_rm_w = 0x00010103UL;
1619 card->token.cm_filter_w = 0x00010108UL;
1620 card->token.cm_connection_w = 0x0001010aUL;
1621 card->token.ulp_filter_w = 0x0001010bUL;
1622 card->token.ulp_connection_w = 0x0001010dUL;
1623}
1624
1625static void qeth_init_func_level(struct qeth_card *card)
1626{
5113fec0
UB		 1627 switch (card->info.type) {
1628 case QETH_CARD_TYPE_IQD:
6298263a 1629 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
5113fec0
UB		 1630 break;
1631 case QETH_CARD_TYPE_OSD:
0132951e 1632 case QETH_CARD_TYPE_OSN:
5113fec0
UB		 1633 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1634 break;
1635 default:
1636 break;
4a71df50
FB		 1637 }
1638}
1639
48ce6f89 1640static void qeth_idx_finalize_cmd(struct qeth_card *card,
c3b2218d 1641 struct qeth_cmd_buffer *iob)
48ce6f89 1642{
48ce6f89
JW		 1643 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1644 QETH_SEQ_NO_LENGTH);
1645 if (iob->channel == &card->write)
1646 card->seqno.trans_hdr++;
1647}
1648
4a71df50
FB		 1649static int qeth_peer_func_level(int level)
1650{
1651 if ((level & 0xff) == 8)
1652 return (level & 0xff) + 0x400;
1653 if (((level >> 8) & 3) == 1)
1654 return (level & 0xff) + 0x200;
1655 return level;
1656}
1657
48ce6f89 1658static void qeth_mpc_finalize_cmd(struct qeth_card *card,
c3b2218d 1659 struct qeth_cmd_buffer *iob)
4a71df50 1660{
c3b2218d 1661 qeth_idx_finalize_cmd(card, iob);
4a71df50 1662
4a71df50
FB		 1663 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1664 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1665 card->seqno.pdu_hdr++;
1666 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1667 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
48ce6f89 1668
48ce6f89 1669 iob->callback = qeth_release_buffer_cb;
4a71df50 1670}
4a71df50 1671
f19f8fd2
JW		 1672static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1673 void *data,
1674 unsigned int data_length)
1273a800
JW		 1675{
1676 struct qeth_cmd_buffer *iob;
1677
f19f8fd2
JW		 1678 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1679 if (!iob)
1680 return NULL;
1681
1682 memcpy(iob->data, data, data_length);
1683 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1684 iob->data);
1685 iob->finalize = qeth_mpc_finalize_cmd;
1273a800
JW		 1686 return iob;
1687}
1688
efbbc1d5
EC		 1689/**
1690 * qeth_send_control_data() - send control command to the card
1691 * @card: qeth_card structure pointer
efbbc1d5
EC		 1692 * @iob: qeth_cmd_buffer pointer
1693 * @reply_cb: callback function pointer
1694 * @cb_card: pointer to the qeth_card structure
1695 * @cb_reply: pointer to the qeth_reply structure
1696 * @cb_cmd: pointer to the original iob for non-IPA
1697 * commands, or to the qeth_ipa_cmd structure
1698 * for the IPA commands.
1699 * @reply_param: private pointer passed to the callback
1700 *
efbbc1d5
EC		 1701 * Callback function gets called one or more times, with cb_cmd
1702 * pointing to the response returned by the hardware. Callback
742d4d40
JW		 1703 * function must return
1704 * > 0 if more reply blocks are expected,
1705 * 0 if the last or only reply block is received, and
1706 * < 0 on error.
1707 * Callback function can get the value of the reply_param pointer from the
efbbc1d5
EC		 1708 * field 'param' of the structure qeth_reply.
1709 */
1710
c3b2218d 1711static int qeth_send_control_data(struct qeth_card *card,
84dbea46
JW		 1712 struct qeth_cmd_buffer *iob,
1713 int (*reply_cb)(struct qeth_card *cb_card,
1714 struct qeth_reply *cb_reply,
1715 unsigned long cb_cmd),
1716 void *reply_param)
4a71df50 1717{
750b1625 1718 struct qeth_channel *channel = iob->channel;
308946b0 1719 struct qeth_reply *reply = &iob->reply;
782e4a79 1720 long timeout = iob->timeout;
4a71df50 1721 int rc;
4a71df50 1722
847a50fd 1723 QETH_CARD_TEXT(card, 2, "sendctl");
4a71df50 1724
4a71df50
FB		 1725 reply->callback = reply_cb;
1726 reply->param = reply_param;
d22ffb5a 1727
782e4a79
JW		 1728 timeout = wait_event_interruptible_timeout(card->wait_q,
1729 qeth_trylock_channel(channel),
1730 timeout);
1731 if (timeout <= 0) {
c3b2218d 1732 qeth_put_cmd(iob);
782e4a79
JW		 1733 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1734 }
4a71df50 1735
2066e1db 1736 if (iob->finalize)
c3b2218d
JW		 1737 iob->finalize(card, iob);
1738 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
d22ffb5a 1739
308946b0 1740 qeth_enqueue_cmd(card, iob);
1c5b2216 1741
32e85a0d
JW		 1742 /* This pairs with iob->callback, and keeps the iob alive after IO: */
1743 qeth_get_cmd(iob);
1744
847a50fd 1745 QETH_CARD_TEXT(card, 6, "noirqpnd");
ed47155b 1746 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
40554895 1747 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
782e4a79 1748 (addr_t) iob, 0, 0, timeout);
ed47155b 1749 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1750 if (rc) {
e19e5be8
JW		 1751 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1752 CARD_DEVID(card), rc);
847a50fd 1753 QETH_CARD_TEXT_(card, 2, " err%d", rc);
308946b0 1754 qeth_dequeue_cmd(card, iob);
c3b2218d 1755 qeth_put_cmd(iob);
750b1625 1756 atomic_set(&channel->irq_pending, 0);
4a71df50 1757 wake_up(&card->wait_q);
32e85a0d 1758 goto out;
4a71df50 1759 }
5b54e16f 1760
308946b0 1761 timeout = wait_for_completion_interruptible_timeout(&iob->done,
782e4a79
JW		 1762 timeout);
1763 if (timeout <= 0)
1764 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
5b54e16f 1765
308946b0 1766 qeth_dequeue_cmd(card, iob);
072f7940
JW		 1767
1768 if (reply_cb) {
1769 /* Wait until the callback for a late reply has completed: */
308946b0 1770 spin_lock_irq(&iob->lock);
072f7940
JW		 1771 if (rc)
1772 /* Zap any callback that's still pending: */
308946b0
JW		 1773 iob->rc = rc;
1774 spin_unlock_irq(&iob->lock);
072f7940
JW		 1775 }
1776
782e4a79 1777 if (!rc)
308946b0 1778 rc = iob->rc;
32e85a0d
JW		 1779
1780out:
32e85a0d 1781 qeth_put_cmd(iob);
5b54e16f 1782 return rc;
4a71df50 1783}
4a71df50 1784
afc1f67b
JW		 1785struct qeth_node_desc {
1786 struct node_descriptor nd1;
1787 struct node_descriptor nd2;
1788 struct node_descriptor nd3;
1789};
1790
2066e1db 1791static void qeth_read_conf_data_cb(struct qeth_card *card,
12fc286f
JW		 1792 struct qeth_cmd_buffer *iob,
1793 unsigned int data_length)
2066e1db 1794{
afc1f67b 1795 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
12fc286f 1796 int rc = 0;
afc1f67b 1797 u8 *tag;
2066e1db
JW		 1798
1799 QETH_CARD_TEXT(card, 2, "cfgunit");
12fc286f
JW		 1800
1801 if (data_length < sizeof(*nd)) {
1802 rc = -EINVAL;
1803 goto out;
1804 }
1805
afc1f67b
JW		 1806 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
1807 nd->nd1.plant[1] == _ascebc['M'];
1808 tag = (u8 *)&nd->nd1.tag;
1809 card->info.chpid = tag[0];
1810 card->info.unit_addr2 = tag[1];
1811
1812 tag = (u8 *)&nd->nd2.tag;
1813 card->info.cula = tag[1];
1814
1815 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
1816 nd->nd3.model[1] == 0xF0 &&
1817 nd->nd3.model[2] >= 0xF1 &&
1818 nd->nd3.model[2] <= 0xF4;
2066e1db 1819
12fc286f 1820out:
308946b0 1821 qeth_notify_cmd(iob, rc);
c3b2218d 1822 qeth_put_cmd(iob);
2066e1db
JW		 1823}
1824
1825static int qeth_read_conf_data(struct qeth_card *card)
1826{
1827 struct qeth_channel *channel = &card->data;
1828 struct qeth_cmd_buffer *iob;
1829 struct ciw *ciw;
1830
1831 /* scan for RCD command in extended SenseID data */
1832 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1833 if (!ciw || ciw->cmd == 0)
1834 return -EOPNOTSUPP;
afc1f67b
JW		 1835 if (ciw->count < sizeof(struct qeth_node_desc))
1836 return -EINVAL;
2066e1db
JW		 1837
1838 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1839 if (!iob)
1840 return -ENOMEM;
1841
1842 iob->callback = qeth_read_conf_data_cb;
1843 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1844 iob->data);
1845
c3b2218d 1846 return qeth_send_control_data(card, iob, NULL, NULL);
2066e1db
JW		 1847}
1848
2e873d10
JW		 1849static int qeth_idx_check_activate_response(struct qeth_card *card,
1850 struct qeth_channel *channel,
1851 struct qeth_cmd_buffer *iob)
1852{
1853 int rc;
1854
1855 rc = qeth_check_idx_response(card, iob->data);
1856 if (rc)
1857 return rc;
1858
1859 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1860 return 0;
1861
1862 /* negative reply: */
57a688aa
JW		 1863 QETH_CARD_TEXT_(card, 2, "idxneg%c",
1864 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2e873d10
JW		 1865
1866 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1867 case QETH_IDX_ACT_ERR_EXCL:
1868 dev_err(&channel->ccwdev->dev,
1869 "The adapter is used exclusively by another host\n");
1870 return -EBUSY;
1871 case QETH_IDX_ACT_ERR_AUTH:
1872 case QETH_IDX_ACT_ERR_AUTH_USER:
1873 dev_err(&channel->ccwdev->dev,
1874 "Setting the device online failed because of insufficient authorization\n");
1875 return -EPERM;
1876 default:
1877 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1878 CCW_DEVID(channel->ccwdev));
1879 return -EIO;
1880 }
1881}
1882
f3b783b1 1883static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
12fc286f
JW		 1884 struct qeth_cmd_buffer *iob,
1885 unsigned int data_length)
2e873d10 1886{
fcda7f73 1887 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 1888 u16 peer_level;
1889 int rc;
1890
57a688aa 1891 QETH_CARD_TEXT(card, 2, "idxrdcb");
2e873d10
JW		 1892
1893 rc = qeth_idx_check_activate_response(card, channel, iob);
1894 if (rc)
1895 goto out;
1896
1897 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1898 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1899 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1900 CCW_DEVID(channel->ccwdev),
1901 card->info.func_level, peer_level);
1902 rc = -EINVAL;
1903 goto out;
1904 }
1905
1906 memcpy(&card->token.issuer_rm_r,
1907 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1908 QETH_MPC_TOKEN_LENGTH);
1909 memcpy(&card->info.mcl_level[0],
1910 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1911
1912out:
308946b0 1913 qeth_notify_cmd(iob, rc);
c3b2218d 1914 qeth_put_cmd(iob);
2e873d10
JW		 1915}
1916
f3b783b1 1917static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
12fc286f
JW		 1918 struct qeth_cmd_buffer *iob,
1919 unsigned int data_length)
2e873d10 1920{
fcda7f73 1921 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 1922 u16 peer_level;
1923 int rc;
1924
57a688aa 1925 QETH_CARD_TEXT(card, 2, "idxwrcb");
2e873d10
JW		 1926
1927 rc = qeth_idx_check_activate_response(card, channel, iob);
1928 if (rc)
1929 goto out;
1930
1931 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1932 if ((peer_level & ~0x0100) !=
1933 qeth_peer_func_level(card->info.func_level)) {
1934 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1935 CCW_DEVID(channel->ccwdev),
1936 card->info.func_level, peer_level);
1937 rc = -EINVAL;
1938 }
1939
1940out:
308946b0 1941 qeth_notify_cmd(iob, rc);
c3b2218d 1942 qeth_put_cmd(iob);
2e873d10
JW		 1943}
1944
2e873d10
JW		 1945static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
1946 struct qeth_cmd_buffer *iob)
1947{
1948 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
1949 u8 port = ((u8)card->dev->dev_port) | 0x80;
f3b783b1 1950 struct ccw1 *ccw = __ccw_from_cmd(iob);
2e873d10
JW		 1951 struct ccw_dev_id dev_id;
1952
f3b783b1
JW		 1953 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
1954 iob->data);
1955 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2e873d10
JW		 1956 ccw_device_get_id(CARD_DDEV(card), &dev_id);
1957 iob->finalize = qeth_idx_finalize_cmd;
2e873d10 1958
5fd3fcbb 1959 port |= QETH_IDX_ACT_INVAL_FRAME;
2e873d10
JW		 1960 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
1961 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1962 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1963 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1964 &card->info.func_level, 2);
1965 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
1966 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
1967}
1968
1969static int qeth_idx_activate_read_channel(struct qeth_card *card)
1970{
1971 struct qeth_channel *channel = &card->read;
1972 struct qeth_cmd_buffer *iob;
1973 int rc;
1974
57a688aa 1975 QETH_CARD_TEXT(card, 2, "idxread");
2e873d10 1976
f3b783b1 1977 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 1978 if (!iob)
1979 return -ENOMEM;
1980
1981 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1982 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 1983 iob->callback = qeth_idx_activate_read_channel_cb;
2e873d10 1984
c3b2218d 1985 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 1986 if (rc)
1987 return rc;
1988
2e873d10
JW		 1989 channel->state = CH_STATE_UP;
1990 return 0;
1991}
1992
1993static int qeth_idx_activate_write_channel(struct qeth_card *card)
1994{
1995 struct qeth_channel *channel = &card->write;
1996 struct qeth_cmd_buffer *iob;
1997 int rc;
1998
57a688aa 1999 QETH_CARD_TEXT(card, 2, "idxwrite");
2e873d10 2000
f3b783b1 2001 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2002 if (!iob)
2003 return -ENOMEM;
2004
2005 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2006 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2007 iob->callback = qeth_idx_activate_write_channel_cb;
2e873d10 2008
c3b2218d 2009 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2010 if (rc)
2011 return rc;
2012
2e873d10
JW		 2013 channel->state = CH_STATE_UP;
2014 return 0;
2015}
2016
4a71df50
FB		 2017static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2018 unsigned long data)
2019{
2020 struct qeth_cmd_buffer *iob;
2021
57a688aa 2022 QETH_CARD_TEXT(card, 2, "cmenblcb");
4a71df50
FB		 2023
2024 iob = (struct qeth_cmd_buffer *) data;
2025 memcpy(&card->token.cm_filter_r,
2026 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2027 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2028 return 0;
2029}
2030
2031static int qeth_cm_enable(struct qeth_card *card)
2032{
4a71df50
FB		 2033 struct qeth_cmd_buffer *iob;
2034
57a688aa 2035 QETH_CARD_TEXT(card, 2, "cmenable");
4a71df50 2036
f19f8fd2 2037 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
1273a800
JW		 2038 if (!iob)
2039 return -ENOMEM;
48ce6f89 2040
4a71df50
FB		 2041 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2042 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2043 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2044 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2045
c3b2218d 2046 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
4a71df50
FB		 2047}
2048
2049static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2050 unsigned long data)
2051{
4a71df50
FB		 2052 struct qeth_cmd_buffer *iob;
2053
57a688aa 2054 QETH_CARD_TEXT(card, 2, "cmsetpcb");
4a71df50
FB		 2055
2056 iob = (struct qeth_cmd_buffer *) data;
2057 memcpy(&card->token.cm_connection_r,
2058 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2059 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2060 return 0;
2061}
2062
2063static int qeth_cm_setup(struct qeth_card *card)
2064{
4a71df50
FB		 2065 struct qeth_cmd_buffer *iob;
2066
57a688aa 2067 QETH_CARD_TEXT(card, 2, "cmsetup");
4a71df50 2068
f19f8fd2 2069 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
1273a800
JW		 2070 if (!iob)
2071 return -ENOMEM;
48ce6f89 2072
4a71df50
FB		 2073 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2074 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2075 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2076 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2077 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2078 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2079 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
4a71df50
FB		 2080}
2081
8ce7a9e0 2082static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
4a71df50 2083{
8ce7a9e0
JW		 2084 struct net_device *dev = card->dev;
2085 unsigned int new_mtu;
2086
2087 if (!max_mtu) {
2088 /* IQD needs accurate max MTU to set up its RX buffers: */
2089 if (IS_IQD(card))
2090 return -EINVAL;
2091 /* tolerate quirky HW: */
2092 max_mtu = ETH_MAX_MTU;
2093 }
2094
2095 rtnl_lock();
2096 if (IS_IQD(card)) {
2097 /* move any device with default MTU to new max MTU: */
2098 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2099
2100 /* adjust RX buffer size to new max MTU: */
2101 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2102 if (dev->max_mtu && dev->max_mtu != max_mtu)
41c47da3 2103 qeth_free_qdio_queues(card);
8ce7a9e0
JW		 2104 } else {
2105 if (dev->mtu)
2106 new_mtu = dev->mtu;
2107 /* default MTUs for first setup: */
4fda3354 2108 else if (IS_LAYER2(card))
8ce7a9e0
JW		 2109 new_mtu = ETH_DATA_LEN;
2110 else
2111 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
4a71df50 2112 }
8ce7a9e0
JW		 2113
2114 dev->max_mtu = max_mtu;
2115 dev->mtu = min(new_mtu, max_mtu);
2116 rtnl_unlock();
2117 return 0;
4a71df50
FB		 2118}
2119
cef6ff22 2120static int qeth_get_mtu_outof_framesize(int framesize)
4a71df50
FB		 2121{
2122 switch (framesize) {
2123 case 0x4000:
2124 return 8192;
2125 case 0x6000:
2126 return 16384;
2127 case 0xa000:
2128 return 32768;
2129 case 0xffff:
2130 return 57344;
2131 default:
2132 return 0;
2133 }
2134}
2135
4a71df50
FB		 2136static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2137 unsigned long data)
2138{
4a71df50
FB		 2139 __u16 mtu, framesize;
2140 __u16 len;
2141 __u8 link_type;
2142 struct qeth_cmd_buffer *iob;
2143
57a688aa 2144 QETH_CARD_TEXT(card, 2, "ulpenacb");
4a71df50
FB		 2145
2146 iob = (struct qeth_cmd_buffer *) data;
2147 memcpy(&card->token.ulp_filter_r,
2148 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2149 QETH_MPC_TOKEN_LENGTH);
379ac99e 2150 if (IS_IQD(card)) {
4a71df50
FB		 2151 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2152 mtu = qeth_get_mtu_outof_framesize(framesize);
4a71df50 2153 } else {
8ce7a9e0 2154 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
4a71df50 2155 }
8ce7a9e0 2156 *(u16 *)reply->param = mtu;
4a71df50
FB		 2157
2158 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2159 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2160 memcpy(&link_type,
2161 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2162 card->info.link_type = link_type;
2163 } else
2164 card->info.link_type = 0;
57a688aa 2165 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
4a71df50
FB		 2166 return 0;
2167}
2168
73657a3e
JW		 2169static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2170{
2171 if (IS_OSN(card))
2172 return QETH_PROT_OSN2;
4fda3354 2173 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
73657a3e
JW		 2174}
2175
4a71df50
FB		 2176static int qeth_ulp_enable(struct qeth_card *card)
2177{
73657a3e 2178 u8 prot_type = qeth_mpc_select_prot_type(card);
4a71df50 2179 struct qeth_cmd_buffer *iob;
8ce7a9e0 2180 u16 max_mtu;
73657a3e 2181 int rc;
4a71df50 2182
57a688aa 2183 QETH_CARD_TEXT(card, 2, "ulpenabl");
4a71df50 2184
f19f8fd2 2185 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
1273a800
JW		 2186 if (!iob)
2187 return -ENOMEM;
4a71df50 2188
92d27209 2189 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
4a71df50
FB		 2190 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2191 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2192 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2193 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2194 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2195 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
8ce7a9e0
JW		 2196 if (rc)
2197 return rc;
2198 return qeth_update_max_mtu(card, max_mtu);
4a71df50
FB		 2199}
2200
2201static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2202 unsigned long data)
2203{
2204 struct qeth_cmd_buffer *iob;
2205
57a688aa 2206 QETH_CARD_TEXT(card, 2, "ulpstpcb");
4a71df50
FB		 2207
2208 iob = (struct qeth_cmd_buffer *) data;
2209 memcpy(&card->token.ulp_connection_r,
2210 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2211 QETH_MPC_TOKEN_LENGTH);
65a1f898
UB		 2212 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2213 3)) {
57a688aa 2214 QETH_CARD_TEXT(card, 2, "olmlimit");
65a1f898
UB		 2215 dev_err(&card->gdev->dev, "A connection could not be "
2216 "established because of an OLM limit\n");
4b7ae122 2217 return -EMLINK;
65a1f898 2218 }
7bf9bcff 2219 return 0;
4a71df50
FB		 2220}
2221
2222static int qeth_ulp_setup(struct qeth_card *card)
2223{
4a71df50
FB		 2224 __u16 temp;
2225 struct qeth_cmd_buffer *iob;
2226 struct ccw_dev_id dev_id;
2227
57a688aa 2228 QETH_CARD_TEXT(card, 2, "ulpsetup");
4a71df50 2229
f19f8fd2 2230 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
1273a800
JW		 2231 if (!iob)
2232 return -ENOMEM;
4a71df50
FB		 2233
2234 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2235 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2236 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2237 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2238 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2239 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2240
2241 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2242 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2243 temp = (card->info.cula << 8) + card->info.unit_addr2;
2244 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
c3b2218d 2245 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
4a71df50
FB		 2246}
2247
0da9581d
EL		 2248static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2249{
0da9581d
EL		 2250 struct qeth_qdio_out_buffer *newbuf;
2251
0da9581d 2252 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
3b346c18
JW		 2253 if (!newbuf)
2254 return -ENOMEM;
2255
d445a4e2 2256 newbuf->buffer = q->qdio_bufs[bidx];
0da9581d
EL		 2257 skb_queue_head_init(&newbuf->skb_list);
2258 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2259 newbuf->q = q;
0da9581d
EL		 2260 newbuf->next_pending = q->bufs[bidx];
2261 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2262 q->bufs[bidx] = newbuf;
3b346c18 2263 return 0;
0da9581d
EL		 2264}
2265
afa0c590 2266static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
d445a4e2
SO		 2267{
2268 if (!q)
2269 return;
2270
41c47da3 2271 qeth_drain_output_queue(q, true);
d445a4e2
SO		 2272 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2273 kfree(q);
2274}
2275
41c47da3 2276static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
d445a4e2
SO		 2277{
2278 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2279
2280 if (!q)
2281 return NULL;
2282
2283 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2284 kfree(q);
2285 return NULL;
2286 }
2287 return q;
2288}
0da9581d 2289
e53edf74
JW		 2290static void qeth_tx_completion_timer(struct timer_list *timer)
2291{
2292 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2293
2294 napi_schedule(&queue->napi);
2295 QETH_TXQ_STAT_INC(queue, completion_timer);
2296}
2297
41c47da3 2298static int qeth_alloc_qdio_queues(struct qeth_card *card)
4a71df50
FB		 2299{
2300 int i, j;
2301
57a688aa 2302 QETH_CARD_TEXT(card, 2, "allcqdbf");
4a71df50
FB		 2303
2304 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2305 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2306 return 0;
2307
57a688aa 2308 QETH_CARD_TEXT(card, 2, "inq");
4601ba6c 2309 card->qdio.in_q = qeth_alloc_qdio_queue();
4a71df50
FB		 2310 if (!card->qdio.in_q)
2311 goto out_nomem;
4601ba6c 2312
4a71df50
FB		 2313 /* inbound buffer pool */
2314 if (qeth_alloc_buffer_pool(card))
2315 goto out_freeinq;
0da9581d 2316
4a71df50 2317 /* outbound */
4a71df50 2318 for (i = 0; i < card->qdio.no_out_queues; ++i) {
e53edf74
JW		 2319 struct qeth_qdio_out_q *queue;
2320
2321 queue = qeth_alloc_output_queue();
2322 if (!queue)
4a71df50 2323 goto out_freeoutq;
57a688aa 2324 QETH_CARD_TEXT_(card, 2, "outq %i", i);
e53edf74
JW		 2325 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2326 card->qdio.out_qs[i] = queue;
2327 queue->card = card;
2328 queue->queue_no = i;
2329 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2330
4a71df50
FB		 2331 /* give outbound qeth_qdio_buffers their qdio_buffers */
2332 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
e53edf74
JW		 2333 WARN_ON(queue->bufs[j]);
2334 if (qeth_init_qdio_out_buf(queue, j))
0da9581d 2335 goto out_freeoutqbufs;
4a71df50
FB		 2336 }
2337 }
0da9581d
EL		 2338
2339 /* completion */
2340 if (qeth_alloc_cq(card))
2341 goto out_freeoutq;
2342
4a71df50
FB		 2343 return 0;
2344
0da9581d
EL		 2345out_freeoutqbufs:
2346 while (j > 0) {
2347 --j;
2348 kmem_cache_free(qeth_qdio_outbuf_cache,
2349 card->qdio.out_qs[i]->bufs[j]);
2350 card->qdio.out_qs[i]->bufs[j] = NULL;
2351 }
4a71df50 2352out_freeoutq:
bb92d3f8 2353 while (i > 0) {
afa0c590 2354 qeth_free_output_queue(card->qdio.out_qs[--i]);
bb92d3f8
JW		 2355 card->qdio.out_qs[i] = NULL;
2356 }
4a71df50
FB		 2357 qeth_free_buffer_pool(card);
2358out_freeinq:
4601ba6c 2359 qeth_free_qdio_queue(card->qdio.in_q);
4a71df50
FB		 2360 card->qdio.in_q = NULL;
2361out_nomem:
2362 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2363 return -ENOMEM;
2364}
2365
41c47da3 2366static void qeth_free_qdio_queues(struct qeth_card *card)
d445a4e2
SO		 2367{
2368 int i, j;
2369
2370 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2371 QETH_QDIO_UNINITIALIZED)
2372 return;
2373
2374 qeth_free_cq(card);
2375 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2376 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2377 if (card->qdio.in_q->bufs[j].rx_skb)
2378 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2379 }
2380 qeth_free_qdio_queue(card->qdio.in_q);
2381 card->qdio.in_q = NULL;
2382 /* inbound buffer pool */
2383 qeth_free_buffer_pool(card);
2384 /* free outbound qdio_qs */
bb92d3f8
JW		 2385 for (i = 0; i < card->qdio.no_out_queues; i++) {
2386 qeth_free_output_queue(card->qdio.out_qs[i]);
2387 card->qdio.out_qs[i] = NULL;
d445a4e2
SO		 2388 }
2389}
2390
4a71df50
FB		 2391static void qeth_create_qib_param_field(struct qeth_card *card,
2392 char *param_field)
2393{
2394
2395 param_field[0] = _ascebc['P'];
2396 param_field[1] = _ascebc['C'];
2397 param_field[2] = _ascebc['I'];
2398 param_field[3] = _ascebc['T'];
2399 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2400 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2401 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2402}
2403
2404static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2405 char *param_field)
2406{
2407 param_field[16] = _ascebc['B'];
2408 param_field[17] = _ascebc['L'];
2409 param_field[18] = _ascebc['K'];
2410 param_field[19] = _ascebc['T'];
2411 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2412 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2413 *((unsigned int *) (&param_field[28])) =
2414 card->info.blkt.inter_packet_jumbo;
2415}
2416
2417static int qeth_qdio_activate(struct qeth_card *card)
2418{
57a688aa 2419 QETH_CARD_TEXT(card, 3, "qdioact");
779e6e1c 2420 return qdio_activate(CARD_DDEV(card));
4a71df50
FB		 2421}
2422
2423static int qeth_dm_act(struct qeth_card *card)
2424{
4a71df50
FB		 2425 struct qeth_cmd_buffer *iob;
2426
57a688aa 2427 QETH_CARD_TEXT(card, 2, "dmact");
4a71df50 2428
f19f8fd2 2429 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
1273a800
JW		 2430 if (!iob)
2431 return -ENOMEM;
4a71df50
FB		 2432
2433 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2434 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2435 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2436 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2437 return qeth_send_control_data(card, iob, NULL, NULL);
4a71df50
FB		 2438}
2439
2440static int qeth_mpc_initialize(struct qeth_card *card)
2441{
2442 int rc;
2443
57a688aa 2444 QETH_CARD_TEXT(card, 2, "mpcinit");
4a71df50
FB		 2445
2446 rc = qeth_issue_next_read(card);
2447 if (rc) {
57a688aa 2448 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2449 return rc;
2450 }
2451 rc = qeth_cm_enable(card);
2452 if (rc) {
57a688aa 2453 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
4a71df50
FB		 2454 goto out_qdio;
2455 }
2456 rc = qeth_cm_setup(card);
2457 if (rc) {
57a688aa 2458 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 2459 goto out_qdio;
2460 }
2461 rc = qeth_ulp_enable(card);
2462 if (rc) {
57a688aa 2463 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 2464 goto out_qdio;
2465 }
2466 rc = qeth_ulp_setup(card);
2467 if (rc) {
57a688aa 2468 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 2469 goto out_qdio;
2470 }
41c47da3 2471 rc = qeth_alloc_qdio_queues(card);
4a71df50 2472 if (rc) {
57a688aa 2473 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 2474 goto out_qdio;
2475 }
2476 rc = qeth_qdio_establish(card);
2477 if (rc) {
57a688aa 2478 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
41c47da3 2479 qeth_free_qdio_queues(card);
4a71df50
FB		 2480 goto out_qdio;
2481 }
2482 rc = qeth_qdio_activate(card);
2483 if (rc) {
57a688aa 2484 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
4a71df50
FB		 2485 goto out_qdio;
2486 }
2487 rc = qeth_dm_act(card);
2488 if (rc) {
57a688aa 2489 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
4a71df50
FB		 2490 goto out_qdio;
2491 }
2492
2493 return 0;
2494out_qdio:
379ac99e 2495 qeth_qdio_clear_card(card, !IS_IQD(card));
22ae2790 2496 qdio_free(CARD_DDEV(card));
4a71df50
FB		 2497 return rc;
2498}
2499
4a71df50
FB		 2500void qeth_print_status_message(struct qeth_card *card)
2501{
2502 switch (card->info.type) {
5113fec0
UB		 2503 case QETH_CARD_TYPE_OSD:
2504 case QETH_CARD_TYPE_OSM:
2505 case QETH_CARD_TYPE_OSX:
4a71df50
FB		 2506 /* VM will use a non-zero first character
2507 * to indicate a HiperSockets like reporting
2508 * of the level OSA sets the first character to zero
2509 * */
2510 if (!card->info.mcl_level[0]) {
2511 sprintf(card->info.mcl_level, "%02x%02x",
2512 card->info.mcl_level[2],
2513 card->info.mcl_level[3]);
4a71df50
FB		 2514 break;
2515 }
2516 /* fallthrough */
2517 case QETH_CARD_TYPE_IQD:
379ac99e 2518 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
4a71df50
FB		 2519 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2520 card->info.mcl_level[0]];
2521 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2522 card->info.mcl_level[1]];
2523 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2524 card->info.mcl_level[2]];
2525 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2526 card->info.mcl_level[3]];
2527 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2528 }
2529 break;
2530 default:
2531 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2532 }
239ff408
UB		 2533 dev_info(&card->gdev->dev,
2534 "Device is a%s card%s%s%s\nwith link type %s.\n",
2535 qeth_get_cardname(card),
2536 (card->info.mcl_level[0]) ? " (level: " : "",
2537 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2538 (card->info.mcl_level[0]) ? ")" : "",
2539 qeth_get_cardname_short(card));
4a71df50
FB		 2540}
2541EXPORT_SYMBOL_GPL(qeth_print_status_message);
2542
4a71df50
FB		 2543static void qeth_initialize_working_pool_list(struct qeth_card *card)
2544{
2545 struct qeth_buffer_pool_entry *entry;
2546
847a50fd 2547 QETH_CARD_TEXT(card, 5, "inwrklst");
4a71df50
FB		 2548
2549 list_for_each_entry(entry,
2550 &card->qdio.init_pool.entry_list, init_list) {
2551 qeth_put_buffer_pool_entry(card, entry);
2552 }
2553}
2554
cef6ff22
JW		 2555static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2556 struct qeth_card *card)
4a71df50
FB		 2557{
2558 struct list_head *plh;
2559 struct qeth_buffer_pool_entry *entry;
2560 int i, free;
2561 struct page *page;
2562
2563 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2564 return NULL;
2565
2566 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2567 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2568 free = 1;
2569 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2570 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2571 free = 0;
2572 break;
2573 }
2574 }
2575 if (free) {
2576 list_del_init(&entry->list);
2577 return entry;
2578 }
2579 }
2580
2581 /* no free buffer in pool so take first one and swap pages */
2582 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2583 struct qeth_buffer_pool_entry, list);
2584 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2585 if (page_count(virt_to_page(entry->elements[i])) > 1) {
508b3c4f 2586 page = alloc_page(GFP_ATOMIC);
4a71df50
FB		 2587 if (!page) {
2588 return NULL;
2589 } else {
2590 free_page((unsigned long)entry->elements[i]);
2591 entry->elements[i] = page_address(page);
b0abc4f5 2592 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
4a71df50
FB		 2593 }
2594 }
2595 }
2596 list_del_init(&entry->list);
2597 return entry;
2598}
2599
2600static int qeth_init_input_buffer(struct qeth_card *card,
2601 struct qeth_qdio_buffer *buf)
2602{
2603 struct qeth_buffer_pool_entry *pool_entry;
2604 int i;
2605
b3332930 2606 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
37cf05d2
JW		 2607 buf->rx_skb = netdev_alloc_skb(card->dev,
2608 QETH_RX_PULL_LEN + ETH_HLEN);
b3332930
FB		 2609 if (!buf->rx_skb)
2610 return 1;
2611 }
2612
4a71df50
FB		 2613 pool_entry = qeth_find_free_buffer_pool_entry(card);
2614 if (!pool_entry)
2615 return 1;
2616
2617 /*
2618 * since the buffer is accessed only from the input_tasklet
2619 * there shouldn't be a need to synchronize; also, since we use
2620 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2621 * buffers
2622 */
4a71df50
FB		 2623
2624 buf->pool_entry = pool_entry;
2625 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2626 buf->buffer->element[i].length = PAGE_SIZE;
2627 buf->buffer->element[i].addr = pool_entry->elements[i];
2628 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
3ec90878 2629 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
4a71df50 2630 else
3ec90878
JG		 2631 buf->buffer->element[i].eflags = 0;
2632 buf->buffer->element[i].sflags = 0;
4a71df50
FB		 2633 }
2634 return 0;
2635}
2636
8b664cd1
JW		 2637static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2638 struct qeth_qdio_out_q *queue)
2639{
2640 if (!IS_IQD(card) ||
2641 qeth_iqd_is_mcast_queue(card, queue) ||
2642 card->options.cq == QETH_CQ_ENABLED ||
2643 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2644 return 1;
2645
2646 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2647}
2648
4a71df50
FB		 2649int qeth_init_qdio_queues(struct qeth_card *card)
2650{
7b579ce5 2651 unsigned int i;
4a71df50
FB		 2652 int rc;
2653
57a688aa 2654 QETH_CARD_TEXT(card, 2, "initqdqs");
4a71df50
FB		 2655
2656 /* inbound queue */
1b45c80b
JW		 2657 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2658 memset(&card->rx, 0, sizeof(struct qeth_rx));
4a71df50
FB		 2659 qeth_initialize_working_pool_list(card);
2660 /*give only as many buffers to hardware as we have buffer pool entries*/
2661 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2662 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2663 card->qdio.in_q->next_buf_to_init =
2664 card->qdio.in_buf_pool.buf_count - 1;
2665 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
779e6e1c 2666 card->qdio.in_buf_pool.buf_count - 1);
4a71df50 2667 if (rc) {
57a688aa 2668 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2669 return rc;
2670 }
0da9581d
EL		 2671
2672 /* completion */
2673 rc = qeth_cq_init(card);
2674 if (rc) {
2675 return rc;
2676 }
2677
4a71df50
FB		 2678 /* outbound queue */
2679 for (i = 0; i < card->qdio.no_out_queues; ++i) {
4e26c5fe
JW		 2680 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2681
2682 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2683 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2684 queue->next_buf_to_fill = 0;
2685 queue->do_pack = 0;
9549d70a
JW		 2686 queue->prev_hdr = NULL;
2687 queue->bulk_start = 0;
8b664cd1
JW		 2688 queue->bulk_count = 0;
2689 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
4e26c5fe
JW		 2690 atomic_set(&queue->used_buffers, 0);
2691 atomic_set(&queue->set_pci_flags_count, 0);
2692 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
96bd6c94 2693 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
4a71df50
FB		 2694 }
2695 return 0;
2696}
2697EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2698
48ce6f89 2699static void qeth_ipa_finalize_cmd(struct qeth_card *card,
c3b2218d 2700 struct qeth_cmd_buffer *iob)
48ce6f89 2701{
c3b2218d 2702 qeth_mpc_finalize_cmd(card, iob);
48ce6f89
JW		 2703
2704 /* override with IPA-specific values: */
308946b0 2705 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
48ce6f89
JW		 2706}
2707
c2153277
JW		 2708void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2709 u16 cmd_length)
605c9d5f
JW		 2710{
2711 u8 prot_type = qeth_mpc_select_prot_type(card);
c3b2218d 2712 u16 total_length = iob->length;
605c9d5f 2713
f19f8fd2
JW		 2714 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2715 iob->data);
48ce6f89 2716 iob->finalize = qeth_ipa_finalize_cmd;
782e4a79 2717
605c9d5f 2718 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
c2153277 2719 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
605c9d5f 2720 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
c2153277
JW		 2721 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2722 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
605c9d5f
JW		 2723 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2724 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c2153277 2725 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
605c9d5f
JW		 2726}
2727EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2728
a59d121d
JW		 2729struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2730 enum qeth_ipa_cmds cmd_code,
2731 enum qeth_prot_versions prot,
2732 unsigned int data_length)
2733{
c3b2218d 2734 enum qeth_link_types link_type = card->info.link_type;
a59d121d 2735 struct qeth_cmd_buffer *iob;
c3b2218d 2736 struct qeth_ipacmd_hdr *hdr;
a59d121d
JW		 2737
2738 data_length += offsetof(struct qeth_ipa_cmd, data);
2739 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2740 QETH_IPA_TIMEOUT);
2741 if (!iob)
2742 return NULL;
2743
2744 qeth_prepare_ipa_cmd(card, iob, data_length);
c3b2218d
JW		 2745
2746 hdr = &__ipa_cmd(iob)->hdr;
2747 hdr->command = cmd_code;
2748 hdr->initiator = IPA_CMD_INITIATOR_HOST;
2749 /* hdr->seqno is set by qeth_send_control_data() */
2750 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1;
2751 hdr->rel_adapter_no = (u8) card->dev->dev_port;
2752 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
2753 hdr->param_count = 1;
2754 hdr->prot_version = prot;
a59d121d
JW		 2755 return iob;
2756}
2757EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
2758
742d4d40
JW		 2759static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
2760 struct qeth_reply *reply, unsigned long data)
2761{
2762 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2763
2764 return (cmd->hdr.return_code) ? -EIO : 0;
2765}
2766
efbbc1d5
EC		 2767/**
2768 * qeth_send_ipa_cmd() - send an IPA command
2769 *
2770 * See qeth_send_control_data() for explanation of the arguments.
2771 */
2772
4a71df50
FB		 2773int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2774 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2775 unsigned long),
2776 void *reply_param)
2777{
2778 int rc;
4a71df50 2779
847a50fd 2780 QETH_CARD_TEXT(card, 4, "sendipa");
742d4d40 2781
2e873d10 2782 if (card->read_or_write_problem) {
c3b2218d 2783 qeth_put_cmd(iob);
2e873d10
JW		 2784 return -EIO;
2785 }
2786
742d4d40
JW		 2787 if (reply_cb == NULL)
2788 reply_cb = qeth_send_ipa_cmd_cb;
c3b2218d 2789 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
908abbb5
UB		 2790 if (rc == -ETIME) {
2791 qeth_clear_ipacmd_list(card);
2792 qeth_schedule_recovery(card);
2793 }
4a71df50
FB		 2794 return rc;
2795}
2796EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2797
4b7ae122
JW		 2798static int qeth_send_startlan_cb(struct qeth_card *card,
2799 struct qeth_reply *reply, unsigned long data)
2800{
2801 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2802
2803 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
2804 return -ENETDOWN;
2805
2806 return (cmd->hdr.return_code) ? -EIO : 0;
2807}
2808
10340510 2809static int qeth_send_startlan(struct qeth_card *card)
4a71df50 2810{
70919e23 2811 struct qeth_cmd_buffer *iob;
4a71df50 2812
57a688aa 2813 QETH_CARD_TEXT(card, 2, "strtlan");
4a71df50 2814
a59d121d 2815 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
1aec42bc
TR		 2816 if (!iob)
2817 return -ENOMEM;
4b7ae122 2818 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
4a71df50 2819}
4a71df50 2820
686c97ee 2821static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
4a71df50 2822{
686c97ee 2823 if (!cmd->hdr.return_code)
4a71df50
FB		 2824 cmd->hdr.return_code =
2825 cmd->data.setadapterparms.hdr.return_code;
686c97ee 2826 return cmd->hdr.return_code;
4a71df50 2827}
4a71df50
FB		 2828
2829static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2830 struct qeth_reply *reply, unsigned long data)
2831{
686c97ee 2832 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50 2833
847a50fd 2834 QETH_CARD_TEXT(card, 3, "quyadpcb");
686c97ee 2835 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 2836 return -EIO;
4a71df50 2837
5113fec0 2838 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
4a71df50
FB		 2839 card->info.link_type =
2840 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
57a688aa 2841 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
5113fec0 2842 }
4a71df50
FB		 2843 card->options.adp.supported_funcs =
2844 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
686c97ee 2845 return 0;
4a71df50
FB		 2846}
2847
eb3fb0ba 2848static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
b9150461
JW		 2849 enum qeth_ipa_setadp_cmd adp_cmd,
2850 unsigned int data_length)
4a71df50 2851{
b9150461 2852 struct qeth_ipacmd_setadpparms_hdr *hdr;
4a71df50 2853 struct qeth_cmd_buffer *iob;
4a71df50 2854
b9150461
JW		 2855 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
2856 data_length +
2857 offsetof(struct qeth_ipacmd_setadpparms,
2858 data));
2859 if (!iob)
2860 return NULL;
4a71df50 2861
b9150461
JW		 2862 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
2863 hdr->cmdlength = sizeof(*hdr) + data_length;
2864 hdr->command_code = adp_cmd;
2865 hdr->used_total = 1;
2866 hdr->seq_no = 1;
4a71df50
FB		 2867 return iob;
2868}
4a71df50 2869
09960b3a 2870static int qeth_query_setadapterparms(struct qeth_card *card)
4a71df50
FB		 2871{
2872 int rc;
2873 struct qeth_cmd_buffer *iob;
2874
847a50fd 2875 QETH_CARD_TEXT(card, 3, "queryadp");
4a71df50 2876 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
b9150461 2877 SETADP_DATA_SIZEOF(query_cmds_supp));
1aec42bc
TR		 2878 if (!iob)
2879 return -ENOMEM;
4a71df50
FB		 2880 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2881 return rc;
2882}
4a71df50 2883
1da74b1c
FB		 2884static int qeth_query_ipassists_cb(struct qeth_card *card,
2885 struct qeth_reply *reply, unsigned long data)
2886{
2887 struct qeth_ipa_cmd *cmd;
2888
57a688aa 2889 QETH_CARD_TEXT(card, 2, "qipasscb");
1da74b1c
FB		 2890
2891 cmd = (struct qeth_ipa_cmd *) data;
a134884a
SR		 2892
2893 switch (cmd->hdr.return_code) {
742d4d40
JW		 2894 case IPA_RC_SUCCESS:
2895 break;
a134884a
SR		 2896 case IPA_RC_NOTSUPP:
2897 case IPA_RC_L2_UNSUPPORTED_CMD:
57a688aa 2898 QETH_CARD_TEXT(card, 2, "ipaunsup");
a134884a
SR		 2899 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2900 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
742d4d40 2901 return -EOPNOTSUPP;
a134884a 2902 default:
742d4d40
JW		 2903 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2904 CARD_DEVID(card), cmd->hdr.return_code);
2905 return -EIO;
a134884a
SR		 2906 }
2907
1da74b1c
FB		 2908 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2909 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2910 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
a134884a 2911 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
1da74b1c
FB		 2912 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2913 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
a134884a 2914 } else
e19e5be8
JW		 2915 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
2916 CARD_DEVID(card));
1da74b1c
FB		 2917 return 0;
2918}
2919
09960b3a
JW		 2920static int qeth_query_ipassists(struct qeth_card *card,
2921 enum qeth_prot_versions prot)
1da74b1c
FB		 2922{
2923 int rc;
2924 struct qeth_cmd_buffer *iob;
2925
57a688aa 2926 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
a59d121d 2927 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
1aec42bc
TR		 2928 if (!iob)
2929 return -ENOMEM;
1da74b1c
FB		 2930 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2931 return rc;
2932}
1da74b1c 2933
45cbb2e4
SR		 2934static int qeth_query_switch_attributes_cb(struct qeth_card *card,
2935 struct qeth_reply *reply, unsigned long data)
2936{
686c97ee 2937 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
45cbb2e4 2938 struct qeth_query_switch_attributes *attrs;
686c97ee 2939 struct qeth_switch_info *sw_info;
45cbb2e4
SR		 2940
2941 QETH_CARD_TEXT(card, 2, "qswiatcb");
686c97ee 2942 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 2943 return -EIO;
45cbb2e4 2944
686c97ee
JW		 2945 sw_info = (struct qeth_switch_info *)reply->param;
2946 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
2947 sw_info->capabilities = attrs->capabilities;
2948 sw_info->settings = attrs->settings;
2949 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
2950 sw_info->settings);
45cbb2e4
SR		 2951 return 0;
2952}
2953
2954int qeth_query_switch_attributes(struct qeth_card *card,
2955 struct qeth_switch_info *sw_info)
2956{
2957 struct qeth_cmd_buffer *iob;
2958
2959 QETH_CARD_TEXT(card, 2, "qswiattr");
2960 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
2961 return -EOPNOTSUPP;
2962 if (!netif_carrier_ok(card->dev))
2963 return -ENOMEDIUM;
b9150461 2964 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
1aec42bc
TR		 2965 if (!iob)
2966 return -ENOMEM;
45cbb2e4
SR		 2967 return qeth_send_ipa_cmd(card, iob,
2968 qeth_query_switch_attributes_cb, sw_info);
2969}
45cbb2e4 2970
5cfbe10a
JW		 2971struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
2972 enum qeth_diags_cmds sub_cmd,
2973 unsigned int data_length)
2974{
2975 struct qeth_ipacmd_diagass *cmd;
2976 struct qeth_cmd_buffer *iob;
2977
2978 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
2979 DIAG_HDR_LEN + data_length);
2980 if (!iob)
2981 return NULL;
2982
2983 cmd = &__ipa_cmd(iob)->data.diagass;
2984 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
2985 cmd->subcmd = sub_cmd;
2986 return iob;
2987}
2988EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
2989
1da74b1c
FB		 2990static int qeth_query_setdiagass_cb(struct qeth_card *card,
2991 struct qeth_reply *reply, unsigned long data)
2992{
742d4d40
JW		 2993 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2994 u16 rc = cmd->hdr.return_code;
1da74b1c 2995
742d4d40 2996 if (rc) {
1da74b1c 2997 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
742d4d40
JW		 2998 return -EIO;
2999 }
3000
3001 card->info.diagass_support = cmd->data.diagass.ext;
1da74b1c
FB		 3002 return 0;
3003}
3004
3005static int qeth_query_setdiagass(struct qeth_card *card)
3006{
3007 struct qeth_cmd_buffer *iob;
1da74b1c 3008
57a688aa 3009 QETH_CARD_TEXT(card, 2, "qdiagass");
5cfbe10a 3010 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
1aec42bc
TR		 3011 if (!iob)
3012 return -ENOMEM;
1da74b1c
FB		 3013 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3014}
3015
3016static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3017{
3018 unsigned long info = get_zeroed_page(GFP_KERNEL);
3019 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3020 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3021 struct ccw_dev_id ccwid;
caf757c6 3022 int level;
1da74b1c
FB		 3023
3024 tid->chpid = card->info.chpid;
3025 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3026 tid->ssid = ccwid.ssid;
3027 tid->devno = ccwid.devno;
3028 if (!info)
3029 return;
caf757c6
HC		 3030 level = stsi(NULL, 0, 0, 0);
3031 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
1da74b1c 3032 tid->lparnr = info222->lpar_number;
caf757c6 3033 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
1da74b1c
FB		 3034 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3035 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3036 }
3037 free_page(info);
3038 return;
3039}
3040
3041static int qeth_hw_trap_cb(struct qeth_card *card,
3042 struct qeth_reply *reply, unsigned long data)
3043{
742d4d40
JW		 3044 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3045 u16 rc = cmd->hdr.return_code;
1da74b1c 3046
742d4d40 3047 if (rc) {
1da74b1c 3048 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
742d4d40
JW		 3049 return -EIO;
3050 }
1da74b1c
FB		 3051 return 0;
3052}
3053
3054int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3055{
3056 struct qeth_cmd_buffer *iob;
3057 struct qeth_ipa_cmd *cmd;
3058
57a688aa 3059 QETH_CARD_TEXT(card, 2, "diagtrap");
5cfbe10a 3060 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
1aec42bc
TR		 3061 if (!iob)
3062 return -ENOMEM;
ff5caa7a 3063 cmd = __ipa_cmd(iob);
1da74b1c
FB		 3064 cmd->data.diagass.type = 1;
3065 cmd->data.diagass.action = action;
3066 switch (action) {
3067 case QETH_DIAGS_TRAP_ARM:
3068 cmd->data.diagass.options = 0x0003;
3069 cmd->data.diagass.ext = 0x00010000 +
3070 sizeof(struct qeth_trap_id);
3071 qeth_get_trap_id(card,
3072 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3073 break;
3074 case QETH_DIAGS_TRAP_DISARM:
3075 cmd->data.diagass.options = 0x0001;
3076 break;
3077 case QETH_DIAGS_TRAP_CAPTURE:
3078 break;
3079 }
3080 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3081}
3082EXPORT_SYMBOL_GPL(qeth_hw_trap);
3083
d73ef324
JW		 3084static int qeth_check_qdio_errors(struct qeth_card *card,
3085 struct qdio_buffer *buf,
3086 unsigned int qdio_error,
3087 const char *dbftext)
4a71df50 3088{
779e6e1c 3089 if (qdio_error) {
847a50fd 3090 QETH_CARD_TEXT(card, 2, dbftext);
38593d01 3091 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3ec90878 3092 buf->element[15].sflags);
38593d01 3093 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3ec90878 3094 buf->element[14].sflags);
38593d01 3095 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3ec90878 3096 if ((buf->element[15].sflags) == 0x12) {
845ef904 3097 QETH_CARD_STAT_INC(card, rx_fifo_errors);
76b11f8e
UB		 3098 return 0;
3099 } else
3100 return 1;
4a71df50
FB		 3101 }
3102 return 0;
3103}
4a71df50 3104
d73ef324 3105static void qeth_queue_input_buffer(struct qeth_card *card, int index)
4a71df50
FB		 3106{
3107 struct qeth_qdio_q *queue = card->qdio.in_q;
b3332930 3108 struct list_head *lh;
4a71df50
FB		 3109 int count;
3110 int i;
3111 int rc;
3112 int newcount = 0;
3113
4a71df50
FB		 3114 count = (index < queue->next_buf_to_init)?
3115 card->qdio.in_buf_pool.buf_count -
3116 (queue->next_buf_to_init - index) :
3117 card->qdio.in_buf_pool.buf_count -
3118 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3119 /* only requeue at a certain threshold to avoid SIGAs */
3120 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3121 for (i = queue->next_buf_to_init;
3122 i < queue->next_buf_to_init + count; ++i) {
3123 if (qeth_init_input_buffer(card,
ec2b559d 3124 &queue->bufs[QDIO_BUFNR(i)])) {
4a71df50
FB		 3125 break;
3126 } else {
3127 newcount++;
3128 }
3129 }
3130
3131 if (newcount < count) {
3132 /* we are in memory shortage so we switch back to
3133 traditional skb allocation and drop packages */
4a71df50
FB		 3134 atomic_set(&card->force_alloc_skb, 3);
3135 count = newcount;
3136 } else {
4a71df50
FB		 3137 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3138 }
3139
b3332930
FB		 3140 if (!count) {
3141 i = 0;
3142 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3143 i++;
3144 if (i == card->qdio.in_buf_pool.buf_count) {
3145 QETH_CARD_TEXT(card, 2, "qsarbw");
3146 card->reclaim_index = index;
3147 schedule_delayed_work(
3148 &card->buffer_reclaim_work,
3149 QETH_RECLAIM_WORK_TIME);
3150 }
3151 return;
3152 }
3153
4a71df50
FB		 3154 /*
3155 * according to old code it should be avoided to requeue all
3156 * 128 buffers in order to benefit from PCI avoidance.
3157 * this function keeps at least one buffer (the buffer at
3158 * 'index') un-requeued -> this buffer is the first buffer that
3159 * will be requeued the next time
3160 */
779e6e1c
JG		 3161 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3162 queue->next_buf_to_init, count);
4a71df50 3163 if (rc) {
847a50fd 3164 QETH_CARD_TEXT(card, 2, "qinberr");
4a71df50 3165 }
ec2b559d
JW		 3166 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3167 count);
4a71df50
FB		 3168 }
3169}
d73ef324
JW		 3170
3171static void qeth_buffer_reclaim_work(struct work_struct *work)
3172{
3173 struct qeth_card *card = container_of(work, struct qeth_card,
3174 buffer_reclaim_work.work);
3175
3176 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3177 qeth_queue_input_buffer(card, card->reclaim_index);
3178}
4a71df50 3179
d7a39937 3180static void qeth_handle_send_error(struct qeth_card *card,
779e6e1c 3181 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
4a71df50 3182{
3ec90878 3183 int sbalf15 = buffer->buffer->element[15].sflags;
4a71df50 3184
847a50fd 3185 QETH_CARD_TEXT(card, 6, "hdsnderr");
76b11f8e 3186 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
d303b6fd
JG		 3187
3188 if (!qdio_err)
d7a39937 3189 return;
d303b6fd
JG		 3190
3191 if ((sbalf15 >= 15) && (sbalf15 <= 31))
d7a39937 3192 return;
d303b6fd 3193
847a50fd
CO		 3194 QETH_CARD_TEXT(card, 1, "lnkfail");
3195 QETH_CARD_TEXT_(card, 1, "%04x %02x",
d303b6fd 3196 (u16)qdio_err, (u8)sbalf15);
4a71df50
FB		 3197}
3198
664e42ac
JW		 3199/**
3200 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3201 * @queue: queue to check for packing buffer
3202 *
3203 * Returns number of buffers that were prepared for flush.
3204 */
3205static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3206{
3207 struct qeth_qdio_out_buffer *buffer;
3208
3209 buffer = queue->bufs[queue->next_buf_to_fill];
3210 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3211 (buffer->next_element_to_fill > 0)) {
3212 /* it's a packing buffer */
3213 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3214 queue->next_buf_to_fill =
ec2b559d 3215 QDIO_BUFNR(queue->next_buf_to_fill + 1);
664e42ac
JW		 3216 return 1;
3217 }
3218 return 0;
3219}
3220
4a71df50
FB		 3221/*
3222 * Switched to packing state if the number of used buffers on a queue
3223 * reaches a certain limit.
3224 */
3225static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3226{
3227 if (!queue->do_pack) {
3228 if (atomic_read(&queue->used_buffers)
3229 >= QETH_HIGH_WATERMARK_PACK){
3230 /* switch non-PACKING -> PACKING */
847a50fd 3231 QETH_CARD_TEXT(queue->card, 6, "np->pack");
b0abc4f5 3232 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50
FB		 3233 queue->do_pack = 1;
3234 }
3235 }
3236}
3237
3238/*
3239 * Switches from packing to non-packing mode. If there is a packing
3240 * buffer on the queue this buffer will be prepared to be flushed.
3241 * In that case 1 is returned to inform the caller. If no buffer
3242 * has to be flushed, zero is returned.
3243 */
3244static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3245{
4a71df50
FB		 3246 if (queue->do_pack) {
3247 if (atomic_read(&queue->used_buffers)
3248 <= QETH_LOW_WATERMARK_PACK) {
3249 /* switch PACKING -> non-PACKING */
847a50fd 3250 QETH_CARD_TEXT(queue->card, 6, "pack->np");
b0abc4f5 3251 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50 3252 queue->do_pack = 0;
664e42ac 3253 return qeth_prep_flush_pack_buffer(queue);
4a71df50
FB		 3254 }
3255 }
4a71df50
FB		 3256 return 0;
3257}
3258
779e6e1c
JG		 3259static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3260 int count)
4a71df50 3261{
e53edf74 3262 struct qeth_card *card = queue->card;
4a71df50
FB		 3263 struct qeth_qdio_out_buffer *buf;
3264 int rc;
3265 int i;
3266 unsigned int qdio_flags;
3267
4a71df50 3268 for (i = index; i < index + count; ++i) {
ec2b559d
JW		 3269 unsigned int bidx = QDIO_BUFNR(i);
3270
0da9581d 3271 buf = queue->bufs[bidx];
3ec90878
JG		 3272 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3273 SBAL_EFLAGS_LAST_ENTRY;
4a71df50 3274
0da9581d
EL		 3275 if (queue->bufstates)
3276 queue->bufstates[bidx].user = buf;
3277
379ac99e 3278 if (IS_IQD(queue->card))
4a71df50
FB		 3279 continue;
3280
3281 if (!queue->do_pack) {
3282 if ((atomic_read(&queue->used_buffers) >=
3283 (QETH_HIGH_WATERMARK_PACK -
3284 QETH_WATERMARK_PACK_FUZZ)) &&
3285 !atomic_read(&queue->set_pci_flags_count)) {
3286 /* it's likely that we'll go to packing
3287 * mode soon */
3288 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3289 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3290 }
3291 } else {
3292 if (!atomic_read(&queue->set_pci_flags_count)) {
3293 /*
3294 * there's no outstanding PCI any more, so we
3295 * have to request a PCI to be sure the the PCI
3296 * will wake at some time in the future then we
3297 * can flush packed buffers that might still be
3298 * hanging around, which can happen if no
3299 * further send was requested by the stack
3300 */
3301 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3302 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3303 }
3304 }
3305 }
3306
4a71df50 3307 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
4a71df50
FB		 3308 if (atomic_read(&queue->set_pci_flags_count))
3309 qdio_flags |= QDIO_FLAG_PCI_OUT;
3310 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
779e6e1c 3311 queue->queue_no, index, count);
e53edf74
JW		 3312
3313 /* Fake the TX completion interrupt: */
3314 if (IS_IQD(card))
3315 napi_schedule(&queue->napi);
3316
4a71df50 3317 if (rc) {
d303b6fd 3318 /* ignore temporary SIGA errors without busy condition */
1549d13f 3319 if (rc == -ENOBUFS)
d303b6fd 3320 return;
847a50fd 3321 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
0da9581d
EL		 3322 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3323 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3324 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
847a50fd 3325 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
d303b6fd 3326
4a71df50
FB		 3327 /* this must not happen under normal circumstances. if it
3328 * happens something is really wrong -> recover */
3329 qeth_schedule_recovery(queue->card);
3330 return;
3331 }
4a71df50
FB		 3332}
3333
9549d70a
JW		 3334static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3335{
8b664cd1 3336 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
9549d70a 3337
8b664cd1 3338 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
9549d70a 3339 queue->prev_hdr = NULL;
8b664cd1 3340 queue->bulk_count = 0;
9549d70a
JW		 3341}
3342
4a71df50
FB		 3343static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3344{
3345 int index;
3346 int flush_cnt = 0;
3347 int q_was_packing = 0;
3348
3349 /*
3350 * check if weed have to switch to non-packing mode or if
3351 * we have to get a pci flag out on the queue
3352 */
3353 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3354 !atomic_read(&queue->set_pci_flags_count)) {
3355 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3356 QETH_OUT_Q_UNLOCKED) {
3357 /*
3358 * If we get in here, there was no action in
3359 * do_send_packet. So, we check if there is a
3360 * packing buffer to be flushed here.
3361 */
4a71df50
FB		 3362 index = queue->next_buf_to_fill;
3363 q_was_packing = queue->do_pack;
3364 /* queue->do_pack may change */
3365 barrier();
3366 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3367 if (!flush_cnt &&
3368 !atomic_read(&queue->set_pci_flags_count))
664e42ac 3369 flush_cnt += qeth_prep_flush_pack_buffer(queue);
b0abc4f5
JW		 3370 if (q_was_packing)
3371 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
4a71df50 3372 if (flush_cnt)
779e6e1c 3373 qeth_flush_buffers(queue, index, flush_cnt);
4a71df50
FB		 3374 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3375 }
3376 }
3377}
3378
7bcd64eb
JW		 3379static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3380 unsigned long card_ptr)
a1c3ed4c
FB		 3381{
3382 struct qeth_card *card = (struct qeth_card *)card_ptr;
3383
d3d1b205 3384 if (card->dev->flags & IFF_UP)
a1c3ed4c
FB		 3385 napi_schedule(&card->napi);
3386}
a1c3ed4c 3387
0da9581d
EL		 3388int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3389{
3390 int rc;
3391
3392 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3393 rc = -1;
3394 goto out;
3395 } else {
3396 if (card->options.cq == cq) {
3397 rc = 0;
3398 goto out;
3399 }
3400
d7d543f2 3401 if (card->state != CARD_STATE_DOWN) {
0da9581d
EL		 3402 rc = -1;
3403 goto out;
3404 }
3405
41c47da3 3406 qeth_free_qdio_queues(card);
0da9581d
EL		 3407 card->options.cq = cq;
3408 rc = 0;
3409 }
3410out:
3411 return rc;
3412
3413}
3414EXPORT_SYMBOL_GPL(qeth_configure_cq);
3415
3b346c18
JW		 3416static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3417 unsigned int queue, int first_element,
3418 int count)
3419{
0da9581d
EL		 3420 struct qeth_qdio_q *cq = card->qdio.c_q;
3421 int i;
3422 int rc;
3423
3424 if (!qeth_is_cq(card, queue))
4326b5b4 3425 return;
0da9581d
EL		 3426
3427 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3428 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3429 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3430
3431 if (qdio_err) {
3a18d754 3432 netif_tx_stop_all_queues(card->dev);
0da9581d 3433 qeth_schedule_recovery(card);
4326b5b4 3434 return;
0da9581d
EL		 3435 }
3436
3437 for (i = first_element; i < first_element + count; ++i) {
ec2b559d 3438 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3b346c18 3439 int e = 0;
0da9581d 3440
903e4853
UB		 3441 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3442 buffer->element[e].addr) {
0da9581d
EL		 3443 unsigned long phys_aob_addr;
3444
3445 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3446 qeth_qdio_handle_aob(card, phys_aob_addr);
0da9581d
EL		 3447 ++e;
3448 }
3b346c18 3449 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
0da9581d
EL		 3450 }
3451 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3452 card->qdio.c_q->next_buf_to_init,
3453 count);
3454 if (rc) {
3455 dev_warn(&card->gdev->dev,
3456 "QDIO reported an error, rc=%i\n", rc);
3457 QETH_CARD_TEXT(card, 2, "qcqherr");
3458 }
ec2b559d
JW		 3459
3460 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
0da9581d
EL		 3461}
3462
7bcd64eb
JW		 3463static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3464 unsigned int qdio_err, int queue,
3465 int first_elem, int count,
3466 unsigned long card_ptr)
a1c3ed4c
FB		 3467{
3468 struct qeth_card *card = (struct qeth_card *)card_ptr;
3469
0da9581d
EL		 3470 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3471 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3472
3473 if (qeth_is_cq(card, queue))
3474 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3475 else if (qdio_err)
a1c3ed4c
FB		 3476 qeth_schedule_recovery(card);
3477}
a1c3ed4c 3478
7bcd64eb
JW		 3479static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3480 unsigned int qdio_error, int __queue,
3481 int first_element, int count,
3482 unsigned long card_ptr)
4a71df50
FB		 3483{
3484 struct qeth_card *card = (struct qeth_card *) card_ptr;
3485 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3a18d754 3486 struct net_device *dev = card->dev;
54a50941 3487 struct netdev_queue *txq;
4a71df50
FB		 3488 int i;
3489
847a50fd 3490 QETH_CARD_TEXT(card, 6, "qdouhdl");
1549d13f 3491 if (qdio_error & QDIO_ERROR_FATAL) {
847a50fd 3492 QETH_CARD_TEXT(card, 2, "achkcond");
3a18d754 3493 netif_tx_stop_all_queues(dev);
779e6e1c
JG		 3494 qeth_schedule_recovery(card);
3495 return;
4a71df50 3496 }
4326b5b4 3497
4a71df50 3498 for (i = first_element; i < (first_element + count); ++i) {
ec2b559d
JW		 3499 struct qeth_qdio_out_buffer *buf = queue->bufs[QDIO_BUFNR(i)];
3500
3501 qeth_handle_send_error(card, buf, qdio_error);
3502 qeth_clear_output_buffer(queue, buf, qdio_error, 0);
4a71df50 3503 }
e53edf74 3504
4a71df50 3505 atomic_sub(count, &queue->used_buffers);
e53edf74 3506 qeth_check_outbound_queue(queue);
4a71df50 3507
54a50941
JW		 3508 txq = netdev_get_tx_queue(dev, __queue);
3509 /* xmit may have observed the full-condition, but not yet stopped the
3510 * txq. In which case the code below won't trigger. So before returning,
3511 * xmit will re-check the txq's fill level and wake it up if needed.
3512 */
3513 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3514 netif_tx_wake_queue(txq);
4a71df50 3515}
4a71df50 3516
290b8348
SR		 3517/**
3518 * Note: Function assumes that we have 4 outbound queues.
3519 */
73dc2daf 3520int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
4a71df50 3521{
e6c15b5f 3522 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
290b8348
SR		 3523 u8 tos;
3524
290b8348
SR		 3525 switch (card->qdio.do_prio_queueing) {
3526 case QETH_PRIO_Q_ING_TOS:
3527 case QETH_PRIO_Q_ING_PREC:
73dc2daf 3528 switch (qeth_get_ip_version(skb)) {
290b8348
SR		 3529 case 4:
3530 tos = ipv4_get_dsfield(ip_hdr(skb));
3531 break;
3532 case 6:
3533 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3534 break;
3535 default:
3536 return card->qdio.default_out_queue;
4a71df50 3537 }
290b8348 3538 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
e6c15b5f 3539 return ~tos >> 6 & 3;
290b8348 3540 if (tos & IPTOS_MINCOST)
e6c15b5f 3541 return 3;
290b8348
SR		 3542 if (tos & IPTOS_RELIABILITY)
3543 return 2;
3544 if (tos & IPTOS_THROUGHPUT)
3545 return 1;
3546 if (tos & IPTOS_LOWDELAY)
3547 return 0;
d66cb37e
SR		 3548 break;
3549 case QETH_PRIO_Q_ING_SKB:
3550 if (skb->priority > 5)
3551 return 0;
e6c15b5f 3552 return ~skb->priority >> 1 & 3;
d66cb37e 3553 case QETH_PRIO_Q_ING_VLAN:
e6c15b5f
JW		 3554 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3555 return ~ntohs(veth->h_vlan_TCI) >>
3556 (VLAN_PRIO_SHIFT + 1) & 3;
d66cb37e 3557 break;
4a71df50 3558 default:
290b8348 3559 break;
4a71df50 3560 }
290b8348 3561 return card->qdio.default_out_queue;
4a71df50
FB		 3562}
3563EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3564
2863c613
EC		 3565/**
3566 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3567 * @skb: SKB address
3568 *
3569 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3570 * fragmented part of the SKB. Returns zero for linear SKB.
3571 */
356156b6 3572static int qeth_get_elements_for_frags(struct sk_buff *skb)
271648b4 3573{
2863c613 3574 int cnt, elements = 0;
271648b4
FB		 3575
3576 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
d7840976 3577 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
2863c613
EC		 3578
3579 elements += qeth_get_elements_for_range(
3580 (addr_t)skb_frag_address(frag),
3581 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
271648b4
FB		 3582 }
3583 return elements;
3584}
271648b4 3585
40e6a225
JW		 3586/**
3587 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3588 * to transmit an skb.
3589 * @skb: the skb to operate on.
3590 * @data_offset: skip this part of the skb's linear data
3591 *
3592 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3593 * skb's data (both its linear part and paged fragments).
3594 */
3595unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
ba86ceee
JW		 3596{
3597 unsigned int elements = qeth_get_elements_for_frags(skb);
3598 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3599 addr_t start = (addr_t)skb->data + data_offset;
3600
3601 if (start != end)
3602 elements += qeth_get_elements_for_range(start, end);
3603 return elements;
3604}
40e6a225 3605EXPORT_SYMBOL_GPL(qeth_count_elements);
4a71df50 3606
e517b649
JW		 3607#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3608 MAX_TCP_HEADER)
55494264 3609
0d6f02d3 3610/**
ba86ceee
JW		 3611 * qeth_add_hw_header() - add a HW header to an skb.
3612 * @skb: skb that the HW header should be added to.
0d6f02d3
JW		 3613 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3614 * it contains a valid pointer to a qeth_hdr.
a7c2f4a3
JW		 3615 * @hdr_len: length of the HW header.
3616 * @proto_len: length of protocol headers that need to be in same page as the
3617 * HW header.
0d6f02d3
JW		 3618 *
3619 * Returns the pushed length. If the header can't be pushed on
3620 * (eg. because it would cross a page boundary), it is allocated from
3621 * the cache instead and 0 is returned.
ba86ceee 3622 * The number of needed buffer elements is returned in @elements.
0d6f02d3
JW		 3623 * Error to create the hdr is indicated by returning with < 0.
3624 */
b0abc4f5
JW		 3625static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3626 struct sk_buff *skb, struct qeth_hdr **hdr,
3627 unsigned int hdr_len, unsigned int proto_len,
3628 unsigned int *elements)
ba86ceee 3629{
a7c2f4a3 3630 const unsigned int contiguous = proto_len ? proto_len : 1;
4e26c5fe 3631 const unsigned int max_elements = queue->max_elements;
ba86ceee
JW		 3632 unsigned int __elements;
3633 addr_t start, end;
3634 bool push_ok;
3635 int rc;
3636
3637check_layout:
a7c2f4a3 3638 start = (addr_t)skb->data - hdr_len;
ba86ceee
JW		 3639 end = (addr_t)skb->data;
3640
a7c2f4a3 3641 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
ba86ceee
JW		 3642 /* Push HW header into same page as first protocol header. */
3643 push_ok = true;
e517b649
JW		 3644 /* ... but TSO always needs a separate element for headers: */
3645 if (skb_is_gso(skb))
3646 __elements = 1 + qeth_count_elements(skb, proto_len);
3647 else
3648 __elements = qeth_count_elements(skb, 0);
4e2fe4ed
JW		 3649 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3650 /* Push HW header into preceding page, flush with skb->data. */
a7c2f4a3 3651 push_ok = true;
ba86ceee 3652 __elements = 1 + qeth_count_elements(skb, 0);
a7c2f4a3
JW		 3653 } else {
3654 /* Use header cache, copy protocol headers up. */
3655 push_ok = false;
3656 __elements = 1 + qeth_count_elements(skb, proto_len);
ba86ceee
JW		 3657 }
3658
3659 /* Compress skb to fit into one IO buffer: */
3660 if (__elements > max_elements) {
3661 if (!skb_is_nonlinear(skb)) {
3662 /* Drop it, no easy way of shrinking it further. */
3663 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3664 max_elements, __elements, skb->len);
3665 return -E2BIG;
3666 }
3667
3668 rc = skb_linearize(skb);
b0abc4f5
JW		 3669 if (rc) {
3670 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
ba86ceee 3671 return rc;
b0abc4f5 3672 }
ba86ceee 3673
b0abc4f5 3674 QETH_TXQ_STAT_INC(queue, skbs_linearized);
ba86ceee
JW		 3675 /* Linearization changed the layout, re-evaluate: */
3676 goto check_layout;
3677 }
3678
3679 *elements = __elements;
3680 /* Add the header: */
3681 if (push_ok) {
a7c2f4a3
JW		 3682 *hdr = skb_push(skb, hdr_len);
3683 return hdr_len;
0d6f02d3
JW		 3684 }
3685 /* fall back */
55494264
JW		 3686 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3687 return -E2BIG;
0d6f02d3
JW		 3688 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3689 if (!*hdr)
3690 return -ENOMEM;
a7c2f4a3
JW		 3691 /* Copy protocol headers behind HW header: */
3692 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
0d6f02d3
JW		 3693 return 0;
3694}
0d6f02d3 3695
9549d70a 3696static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
9549d70a
JW		 3697 struct sk_buff *curr_skb,
3698 struct qeth_hdr *curr_hdr)
3699{
8b664cd1 3700 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
9549d70a
JW		 3701 struct qeth_hdr *prev_hdr = queue->prev_hdr;
3702
3703 if (!prev_hdr)
3704 return true;
3705
3706 /* All packets must have the same target: */
3707 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3708 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3709
3710 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3711 eth_hdr(curr_skb)->h_dest) &&
3712 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3713 }
3714
3715 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3716 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3717}
3718
3719static unsigned int __qeth_fill_buffer(struct sk_buff *skb,
3720 struct qeth_qdio_out_buffer *buf,
3721 bool is_first_elem, unsigned int offset)
4a71df50 3722{
384d2ef1
JW		 3723 struct qdio_buffer *buffer = buf->buffer;
3724 int element = buf->next_element_to_fill;
cc309f83
JW		 3725 int length = skb_headlen(skb) - offset;
3726 char *data = skb->data + offset;
4e2fe4ed 3727 unsigned int elem_length, cnt;
4a71df50 3728
cc309f83 3729 /* map linear part into buffer element(s) */
4a71df50 3730 while (length > 0) {
4e2fe4ed
JW		 3731 elem_length = min_t(unsigned int, length,
3732 PAGE_SIZE - offset_in_page(data));
4a71df50
FB		 3733
3734 buffer->element[element].addr = data;
4e2fe4ed
JW		 3735 buffer->element[element].length = elem_length;
3736 length -= elem_length;
384d2ef1
JW		 3737 if (is_first_elem) {
3738 is_first_elem = false;
5258830b
JW		 3739 if (length || skb_is_nonlinear(skb))
3740 /* skb needs additional elements */
3ec90878 3741 buffer->element[element].eflags =
5258830b 3742 SBAL_EFLAGS_FIRST_FRAG;
4a71df50 3743 else
5258830b
JW		 3744 buffer->element[element].eflags = 0;
3745 } else {
3746 buffer->element[element].eflags =
3747 SBAL_EFLAGS_MIDDLE_FRAG;
4a71df50 3748 }
4e2fe4ed
JW		 3749
3750 data += elem_length;
4a71df50 3751 element++;
4a71df50 3752 }
51aa165c 3753
cc309f83 3754 /* map page frags into buffer element(s) */
51aa165c 3755 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
f8eb4930
JW		 3756 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3757
3758 data = skb_frag_address(frag);
3759 length = skb_frag_size(frag);
271648b4 3760 while (length > 0) {
4e2fe4ed
JW		 3761 elem_length = min_t(unsigned int, length,
3762 PAGE_SIZE - offset_in_page(data));
271648b4
FB		 3763
3764 buffer->element[element].addr = data;
4e2fe4ed 3765 buffer->element[element].length = elem_length;
271648b4
FB		 3766 buffer->element[element].eflags =
3767 SBAL_EFLAGS_MIDDLE_FRAG;
4e2fe4ed
JW		 3768
3769 length -= elem_length;
3770 data += elem_length;
271648b4
FB		 3771 element++;
3772 }
51aa165c
FB		 3773 }
3774
3ec90878
JG		 3775 if (buffer->element[element - 1].eflags)
3776 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
384d2ef1 3777 buf->next_element_to_fill = element;
9549d70a 3778 return element;
4a71df50
FB		 3779}
3780
eaf3cc08
JW		 3781/**
3782 * qeth_fill_buffer() - map skb into an output buffer
eaf3cc08
JW		 3783 * @buf: buffer to transport the skb
3784 * @skb: skb to map into the buffer
3785 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3786 * from qeth_core_header_cache.
3787 * @offset: when mapping the skb, start at skb->data + offset
3788 * @hd_len: if > 0, build a dedicated header element of this size
3789 */
9549d70a
JW		 3790static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3791 struct sk_buff *skb, struct qeth_hdr *hdr,
3792 unsigned int offset, unsigned int hd_len)
4a71df50 3793{
eaf3cc08 3794 struct qdio_buffer *buffer = buf->buffer;
384d2ef1 3795 bool is_first_elem = true;
4a71df50 3796
dc149e37 3797 __skb_queue_tail(&buf->skb_list, skb);
4a71df50 3798
eaf3cc08
JW		 3799 /* build dedicated header element */
3800 if (hd_len) {
683d718a 3801 int element = buf->next_element_to_fill;
384d2ef1
JW		 3802 is_first_elem = false;
3803
683d718a 3804 buffer->element[element].addr = hdr;
f1588177 3805 buffer->element[element].length = hd_len;
3ec90878 3806 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
eaf3cc08
JW		 3807 /* remember to free cache-allocated qeth_hdr: */
3808 buf->is_header[element] = ((void *)hdr != skb->data);
683d718a
FB		 3809 buf->next_element_to_fill++;
3810 }
3811
9549d70a 3812 return __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4a71df50
FB		 3813}
3814
9549d70a
JW		 3815static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3816 struct sk_buff *skb, unsigned int elements,
3817 struct qeth_hdr *hdr, unsigned int offset,
3818 unsigned int hd_len)
4a71df50 3819{
96bd6c94 3820 unsigned int bytes = qdisc_pkt_len(skb);
8b664cd1 3821 struct qeth_qdio_out_buffer *buffer;
9549d70a 3822 unsigned int next_element;
54a50941
JW		 3823 struct netdev_queue *txq;
3824 bool stopped = false;
9549d70a
JW		 3825 bool flush;
3826
8b664cd1 3827 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
9549d70a 3828 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4a71df50 3829
54a50941
JW		 3830 /* Just a sanity check, the wake/stop logic should ensure that we always
3831 * get a free buffer.
4a71df50
FB		 3832 */
3833 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
7c2e9ba3 3834 return -EBUSY;
54a50941 3835
8b664cd1
JW		 3836 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
3837
3838 if (flush ||
3839 (buffer->next_element_to_fill + elements > queue->max_elements)) {
3840 if (buffer->next_element_to_fill > 0) {
3841 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3842 queue->bulk_count++;
3843 }
3844
3845 if (queue->bulk_count >= queue->bulk_max)
3846 flush = true;
3847
3848 if (flush)
3849 qeth_flush_queue(queue);
3850
3851 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
3852 queue->bulk_count)];
54a50941 3853
9549d70a
JW		 3854 /* Sanity-check again: */
3855 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3856 return -EBUSY;
3857 }
3858
3859 if (buffer->next_element_to_fill == 0 &&
3860 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
54a50941
JW		 3861 /* If a TX completion happens right _here_ and misses to wake
3862 * the txq, then our re-check below will catch the race.
3863 */
3864 QETH_TXQ_STAT_INC(queue, stopped);
3865 netif_tx_stop_queue(txq);
3866 stopped = true;
3867 }
3868
9549d70a 3869 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
96bd6c94 3870 buffer->bytes += bytes;
9549d70a 3871 queue->prev_hdr = hdr;
96bd6c94 3872
9549d70a
JW		 3873 flush = __netdev_tx_sent_queue(txq, bytes,
3874 !stopped && netdev_xmit_more());
3875
3876 if (flush || next_element >= queue->max_elements) {
3877 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
8b664cd1
JW		 3878 queue->bulk_count++;
3879
3880 if (queue->bulk_count >= queue->bulk_max)
3881 flush = true;
3882
3883 if (flush)
3884 qeth_flush_queue(queue);
9549d70a 3885 }
54a50941
JW		 3886
3887 if (stopped && !qeth_out_queue_is_full(queue))
3888 netif_tx_start_queue(txq);
4a71df50 3889 return 0;
4a71df50 3890}
4a71df50
FB		 3891
3892int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
13ddacb5 3893 struct sk_buff *skb, struct qeth_hdr *hdr,
9c3bfda9
JW		 3894 unsigned int offset, unsigned int hd_len,
3895 int elements_needed)
4a71df50
FB		 3896{
3897 struct qeth_qdio_out_buffer *buffer;
9549d70a 3898 unsigned int next_element;
54a50941
JW		 3899 struct netdev_queue *txq;
3900 bool stopped = false;
4a71df50
FB		 3901 int start_index;
3902 int flush_count = 0;
3903 int do_pack = 0;
3904 int tmp;
3905 int rc = 0;
3906
4a71df50
FB		 3907 /* spin until we get the queue ... */
3908 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3909 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3910 start_index = queue->next_buf_to_fill;
0da9581d 3911 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 3912
3913 /* Just a sanity check, the wake/stop logic should ensure that we always
3914 * get a free buffer.
4a71df50
FB		 3915 */
3916 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3917 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3918 return -EBUSY;
3919 }
54a50941
JW		 3920
3921 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3922
4a71df50
FB		 3923 /* check if we need to switch packing state of this queue */
3924 qeth_switch_to_packing_if_needed(queue);
3925 if (queue->do_pack) {
3926 do_pack = 1;
64ef8957 3927 /* does packet fit in current buffer? */
4e26c5fe
JW		 3928 if (buffer->next_element_to_fill + elements_needed >
3929 queue->max_elements) {
64ef8957
FB		 3930 /* ... no -> set state PRIMED */
3931 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3932 flush_count++;
3933 queue->next_buf_to_fill =
ec2b559d 3934 QDIO_BUFNR(queue->next_buf_to_fill + 1);
0da9581d 3935 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 3936
3937 /* We stepped forward, so sanity-check again: */
64ef8957
FB		 3938 if (atomic_read(&buffer->state) !=
3939 QETH_QDIO_BUF_EMPTY) {
3940 qeth_flush_buffers(queue, start_index,
779e6e1c 3941 flush_count);
64ef8957 3942 atomic_set(&queue->state,
4a71df50 3943 QETH_OUT_Q_UNLOCKED);
3cdc8a25
JW		 3944 rc = -EBUSY;
3945 goto out;
4a71df50
FB		 3946 }
3947 }
3948 }
f72b4644 3949
54a50941
JW		 3950 if (buffer->next_element_to_fill == 0 &&
3951 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3952 /* If a TX completion happens right _here_ and misses to wake
3953 * the txq, then our re-check below will catch the race.
3954 */
3955 QETH_TXQ_STAT_INC(queue, stopped);
3956 netif_tx_stop_queue(txq);
3957 stopped = true;
3958 }
3959
9549d70a
JW		 3960 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
3961
3962 if (queue->do_pack)
3963 QETH_TXQ_STAT_INC(queue, skbs_pack);
3964 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
3965 flush_count++;
3966 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
ec2b559d
JW		 3967 queue->next_buf_to_fill =
3968 QDIO_BUFNR(queue->next_buf_to_fill + 1);
9549d70a
JW		 3969 }
3970
4a71df50 3971 if (flush_count)
779e6e1c 3972 qeth_flush_buffers(queue, start_index, flush_count);
4a71df50
FB		 3973 else if (!atomic_read(&queue->set_pci_flags_count))
3974 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3975 /*
3976 * queue->state will go from LOCKED -> UNLOCKED or from
3977 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3978 * (switch packing state or flush buffer to get another pci flag out).
3979 * In that case we will enter this loop
3980 */
3981 while (atomic_dec_return(&queue->state)) {
4a71df50
FB		 3982 start_index = queue->next_buf_to_fill;
3983 /* check if we can go back to non-packing state */
3cdc8a25 3984 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4a71df50
FB		 3985 /*
3986 * check if we need to flush a packing buffer to get a pci
3987 * flag out on the queue
3988 */
3cdc8a25
JW		 3989 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
3990 tmp = qeth_prep_flush_pack_buffer(queue);
3991 if (tmp) {
3992 qeth_flush_buffers(queue, start_index, tmp);
3993 flush_count += tmp;
3994 }
4a71df50 3995 }
3cdc8a25 3996out:
4a71df50 3997 /* at this point the queue is UNLOCKED again */
b0abc4f5
JW		 3998 if (do_pack)
3999 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4a71df50 4000
54a50941
JW		 4001 if (stopped && !qeth_out_queue_is_full(queue))
4002 netif_tx_start_queue(txq);
4a71df50
FB		 4003 return rc;
4004}
4005EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4006
81ec5439
JW		 4007static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4008 unsigned int payload_len, struct sk_buff *skb,
4009 unsigned int proto_len)
82bf5c08
JW		 4010{
4011 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4012
4013 ext->hdr_tot_len = sizeof(*ext);
4014 ext->imb_hdr_no = 1;
4015 ext->hdr_type = 1;
4016 ext->hdr_version = 1;
4017 ext->hdr_len = 28;
4018 ext->payload_len = payload_len;
4019 ext->mss = skb_shinfo(skb)->gso_size;
4020 ext->dg_hdr_len = proto_len;
4021}
82bf5c08 4022
fc69660b 4023int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
eca1d5c2 4024 struct qeth_qdio_out_q *queue, int ipv,
b0abc4f5
JW		 4025 void (*fill_header)(struct qeth_qdio_out_q *queue,
4026 struct qeth_hdr *hdr, struct sk_buff *skb,
eca1d5c2 4027 int ipv, unsigned int data_len))
fc69660b 4028{
82bf5c08 4029 unsigned int proto_len, hw_hdr_len;
fc69660b 4030 unsigned int frame_len = skb->len;
82bf5c08 4031 bool is_tso = skb_is_gso(skb);
fc69660b
JW		 4032 unsigned int data_offset = 0;
4033 struct qeth_hdr *hdr = NULL;
4034 unsigned int hd_len = 0;
4035 unsigned int elements;
4036 int push_len, rc;
fc69660b 4037
82bf5c08
JW		 4038 if (is_tso) {
4039 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4040 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4041 } else {
4042 hw_hdr_len = sizeof(struct qeth_hdr);
81ec5439 4043 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
82bf5c08
JW		 4044 }
4045
fc69660b
JW		 4046 rc = skb_cow_head(skb, hw_hdr_len);
4047 if (rc)
4048 return rc;
4049
b0abc4f5 4050 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
fc69660b
JW		 4051 &elements);
4052 if (push_len < 0)
4053 return push_len;
82bf5c08 4054 if (is_tso || !push_len) {
fc69660b
JW		 4055 /* HW header needs its own buffer element. */
4056 hd_len = hw_hdr_len + proto_len;
82bf5c08 4057 data_offset = push_len + proto_len;
fc69660b 4058 }
e517b649 4059 memset(hdr, 0, hw_hdr_len);
eca1d5c2 4060 fill_header(queue, hdr, skb, ipv, frame_len);
82bf5c08
JW		 4061 if (is_tso)
4062 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4063 frame_len - proto_len, skb, proto_len);
fc69660b 4064
fc69660b 4065 if (IS_IQD(card)) {
9549d70a
JW		 4066 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4067 hd_len);
fc69660b
JW		 4068 } else {
4069 /* TODO: drop skb_orphan() once TX completion is fast enough */
4070 skb_orphan(skb);
4071 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4072 hd_len, elements);
4073 }
4074
eeac0e20
JW		 4075 if (rc && !push_len)
4076 kmem_cache_free(qeth_core_header_cache, hdr);
4077
fc69660b
JW		 4078 return rc;
4079}
4080EXPORT_SYMBOL_GPL(qeth_xmit);
4081
4a71df50
FB		 4082static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4083 struct qeth_reply *reply, unsigned long data)
4084{
686c97ee 4085 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50
FB		 4086 struct qeth_ipacmd_setadpparms *setparms;
4087
847a50fd 4088 QETH_CARD_TEXT(card, 4, "prmadpcb");
4a71df50 4089
4a71df50 4090 setparms = &(cmd->data.setadapterparms);
686c97ee 4091 if (qeth_setadpparms_inspect_rc(cmd)) {
8a593148 4092 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4a71df50
FB		 4093 setparms->data.mode = SET_PROMISC_MODE_OFF;
4094 }
4095 card->info.promisc_mode = setparms->data.mode;
742d4d40 4096 return (cmd->hdr.return_code) ? -EIO : 0;
4a71df50
FB		 4097}
4098
59b757a9 4099void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4a71df50 4100{
59b757a9
JW		 4101 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4102 SET_PROMISC_MODE_OFF;
4a71df50
FB		 4103 struct qeth_cmd_buffer *iob;
4104 struct qeth_ipa_cmd *cmd;
4105
847a50fd 4106 QETH_CARD_TEXT(card, 4, "setprom");
847a50fd 4107 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4a71df50
FB		 4108
4109 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
b9150461 4110 SETADP_DATA_SIZEOF(mode));
1aec42bc
TR		 4111 if (!iob)
4112 return;
ff5caa7a 4113 cmd = __ipa_cmd(iob);
4a71df50
FB		 4114 cmd->data.setadapterparms.data.mode = mode;
4115 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4116}
4117EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4118
4a71df50
FB		 4119static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4120 struct qeth_reply *reply, unsigned long data)
4121{
686c97ee 4122 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b144b99f 4123 struct qeth_ipacmd_setadpparms *adp_cmd;
4a71df50 4124
847a50fd 4125 QETH_CARD_TEXT(card, 4, "chgmaccb");
686c97ee 4126 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4127 return -EIO;
4a71df50 4128
b144b99f 4129 adp_cmd = &cmd->data.setadapterparms;
4b7ae122
JW		 4130 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4131 return -EADDRNOTAVAIL;
4132
b144b99f
JW		 4133 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4134 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4b7ae122 4135 return -EADDRNOTAVAIL;
b144b99f
JW		 4136
4137 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4a71df50
FB		 4138 return 0;
4139}
4140
4141int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4142{
4143 int rc;
4144 struct qeth_cmd_buffer *iob;
4145 struct qeth_ipa_cmd *cmd;
4146
847a50fd 4147 QETH_CARD_TEXT(card, 4, "chgmac");
4a71df50
FB		 4148
4149 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
b9150461 4150 SETADP_DATA_SIZEOF(change_addr));
1aec42bc
TR		 4151 if (!iob)
4152 return -ENOMEM;
ff5caa7a 4153 cmd = __ipa_cmd(iob);
4a71df50 4154 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
99f0b85d
JW		 4155 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4156 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4157 card->dev->dev_addr);
4a71df50
FB		 4158 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4159 NULL);
4160 return rc;
4161}
4162EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4163
d64ecc22
EL		 4164static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4165 struct qeth_reply *reply, unsigned long data)
4166{
686c97ee 4167 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
d64ecc22 4168 struct qeth_set_access_ctrl *access_ctrl_req;
0f54761d 4169 int fallback = *(int *)reply->param;
d64ecc22 4170
847a50fd 4171 QETH_CARD_TEXT(card, 4, "setaccb");
686c97ee 4172 if (cmd->hdr.return_code)
742d4d40 4173 return -EIO;
686c97ee 4174 qeth_setadpparms_inspect_rc(cmd);
d64ecc22 4175
d64ecc22 4176 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
57a688aa
JW		 4177 QETH_CARD_TEXT_(card, 2, "rc=%d",
4178 cmd->data.setadapterparms.hdr.return_code);
0f54761d
SR		 4179 if (cmd->data.setadapterparms.hdr.return_code !=
4180 SET_ACCESS_CTRL_RC_SUCCESS)
e19e5be8
JW		 4181 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4182 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4183 cmd->data.setadapterparms.hdr.return_code);
d64ecc22
EL		 4184 switch (cmd->data.setadapterparms.hdr.return_code) {
4185 case SET_ACCESS_CTRL_RC_SUCCESS:
d64ecc22
EL		 4186 if (card->options.isolation == ISOLATION_MODE_NONE) {
4187 dev_info(&card->gdev->dev,
4188 "QDIO data connection isolation is deactivated\n");
4189 } else {
4190 dev_info(&card->gdev->dev,
4191 "QDIO data connection isolation is activated\n");
4192 }
d64ecc22 4193 break;
0f54761d 4194 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
e19e5be8
JW		 4195 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4196 CARD_DEVID(card));
0f54761d
SR		 4197 if (fallback)
4198 card->options.isolation = card->options.prev_isolation;
4199 break;
4200 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
e19e5be8
JW		 4201 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4202 CARD_DEVID(card));
0f54761d
SR		 4203 if (fallback)
4204 card->options.isolation = card->options.prev_isolation;
4205 break;
d64ecc22 4206 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
d64ecc22
EL		 4207 dev_err(&card->gdev->dev, "Adapter does not "
4208 "support QDIO data connection isolation\n");
d64ecc22 4209 break;
d64ecc22 4210 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
d64ecc22
EL		 4211 dev_err(&card->gdev->dev,
4212 "Adapter is dedicated. "
4213 "QDIO data connection isolation not supported\n");
0f54761d
SR		 4214 if (fallback)
4215 card->options.isolation = card->options.prev_isolation;
d64ecc22 4216 break;
d64ecc22 4217 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
d64ecc22
EL		 4218 dev_err(&card->gdev->dev,
4219 "TSO does not permit QDIO data connection isolation\n");
0f54761d
SR		 4220 if (fallback)
4221 card->options.isolation = card->options.prev_isolation;
4222 break;
4223 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4224 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4225 "support reflective relay mode\n");
4226 if (fallback)
4227 card->options.isolation = card->options.prev_isolation;
4228 break;
4229 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4230 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4231 "enabled at the adjacent switch port");
4232 if (fallback)
4233 card->options.isolation = card->options.prev_isolation;
4234 break;
4235 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4236 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4237 "at the adjacent switch failed\n");
d64ecc22 4238 break;
d64ecc22 4239 default:
d64ecc22 4240 /* this should never happen */
0f54761d
SR		 4241 if (fallback)
4242 card->options.isolation = card->options.prev_isolation;
d64ecc22
EL		 4243 break;
4244 }
742d4d40 4245 return (cmd->hdr.return_code) ? -EIO : 0;
d64ecc22
EL		 4246}
4247
4248static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
0f54761d 4249 enum qeth_ipa_isolation_modes isolation, int fallback)
d64ecc22
EL		 4250{
4251 int rc;
4252 struct qeth_cmd_buffer *iob;
4253 struct qeth_ipa_cmd *cmd;
4254 struct qeth_set_access_ctrl *access_ctrl_req;
4255
847a50fd 4256 QETH_CARD_TEXT(card, 4, "setacctl");
d64ecc22 4257
d64ecc22 4258 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
b9150461 4259 SETADP_DATA_SIZEOF(set_access_ctrl));
1aec42bc
TR		 4260 if (!iob)
4261 return -ENOMEM;
ff5caa7a 4262 cmd = __ipa_cmd(iob);
d64ecc22
EL		 4263 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4264 access_ctrl_req->subcmd_code = isolation;
4265
4266 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
0f54761d 4267 &fallback);
57a688aa 4268 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
d64ecc22
EL		 4269 return rc;
4270}
4271
0f54761d 4272int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
d64ecc22
EL		 4273{
4274 int rc = 0;
4275
847a50fd 4276 QETH_CARD_TEXT(card, 4, "setactlo");
d64ecc22 4277
379ac99e
JW		 4278 if ((IS_OSD(card) || IS_OSX(card)) &&
4279 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
d64ecc22 4280 rc = qeth_setadpparms_set_access_ctrl(card,
0f54761d 4281 card->options.isolation, fallback);
d64ecc22 4282 if (rc) {
e19e5be8
JW		 4283 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4284 rc, CARD_DEVID(card));
0f54761d 4285 rc = -EOPNOTSUPP;
d64ecc22
EL		 4286 }
4287 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4288 card->options.isolation = ISOLATION_MODE_NONE;
4289
4290 dev_err(&card->gdev->dev, "Adapter does not "
4291 "support QDIO data connection isolation\n");
4292 rc = -EOPNOTSUPP;
4293 }
4294 return rc;
4295}
d64ecc22 4296
4a71df50
FB		 4297void qeth_tx_timeout(struct net_device *dev)
4298{
4299 struct qeth_card *card;
4300
509e2562 4301 card = dev->ml_priv;
847a50fd 4302 QETH_CARD_TEXT(card, 4, "txtimeo");
4a71df50
FB		 4303 qeth_schedule_recovery(card);
4304}
4305EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4306
942d6984 4307static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4a71df50 4308{
509e2562 4309 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 4310 int rc = 0;
4311
4312 switch (regnum) {
4313 case MII_BMCR: /* Basic mode control register */
4314 rc = BMCR_FULLDPLX;
4315 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4316 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
54e049c2
JW		 4317 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4318 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4a71df50
FB		 4319 rc |= BMCR_SPEED100;
4320 break;
4321 case MII_BMSR: /* Basic mode status register */
4322 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4323 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4324 BMSR_100BASE4;
4325 break;
4326 case MII_PHYSID1: /* PHYS ID 1 */
4327 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4328 dev->dev_addr[2];
4329 rc = (rc >> 5) & 0xFFFF;
4330 break;
4331 case MII_PHYSID2: /* PHYS ID 2 */
4332 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4333 break;
4334 case MII_ADVERTISE: /* Advertisement control reg */
4335 rc = ADVERTISE_ALL;
4336 break;
4337 case MII_LPA: /* Link partner ability reg */
4338 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4339 LPA_100BASE4 | LPA_LPACK;
4340 break;
4341 case MII_EXPANSION: /* Expansion register */
4342 break;
4343 case MII_DCOUNTER: /* disconnect counter */
4344 break;
4345 case MII_FCSCOUNTER: /* false carrier counter */
4346 break;
4347 case MII_NWAYTEST: /* N-way auto-neg test register */
4348 break;
4349 case MII_RERRCOUNTER: /* rx error counter */
5fd3fcbb
JW		 4350 rc = card->stats.rx_length_errors +
4351 card->stats.rx_frame_errors +
4352 card->stats.rx_fifo_errors;
4a71df50
FB		 4353 break;
4354 case MII_SREVISION: /* silicon revision */
4355 break;
4356 case MII_RESV1: /* reserved 1 */
4357 break;
4358 case MII_LBRERROR: /* loopback, rx, bypass error */
4359 break;
4360 case MII_PHYADDR: /* physical address */
4361 break;
4362 case MII_RESV2: /* reserved 2 */
4363 break;
4364 case MII_TPISTATUS: /* TPI status for 10mbps */
4365 break;
4366 case MII_NCONFIG: /* network interface config */
4367 break;
4368 default:
4369 break;
4370 }
4371 return rc;
4372}
4a71df50 4373
4a71df50 4374static int qeth_snmp_command_cb(struct qeth_card *card,
7c5f8ffb 4375 struct qeth_reply *reply, unsigned long data)
4a71df50 4376{
7c5f8ffb
JW		 4377 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4378 struct qeth_arp_query_info *qinfo = reply->param;
4379 struct qeth_ipacmd_setadpparms *adp_cmd;
4380 unsigned int data_len;
9a764c1e 4381 void *snmp_data;
4a71df50 4382
847a50fd 4383 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4a71df50 4384
4a71df50 4385 if (cmd->hdr.return_code) {
8a593148 4386 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4b7ae122 4387 return -EIO;
4a71df50
FB		 4388 }
4389 if (cmd->data.setadapterparms.hdr.return_code) {
4390 cmd->hdr.return_code =
4391 cmd->data.setadapterparms.hdr.return_code;
8a593148 4392 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4b7ae122 4393 return -EIO;
4a71df50 4394 }
7c5f8ffb
JW		 4395
4396 adp_cmd = &cmd->data.setadapterparms;
4397 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4398 if (adp_cmd->hdr.seq_no == 1) {
4399 snmp_data = &adp_cmd->data.snmp;
9a764c1e 4400 } else {
7c5f8ffb
JW		 4401 snmp_data = &adp_cmd->data.snmp.request;
4402 data_len -= offsetof(struct qeth_snmp_cmd, request);
9a764c1e 4403 }
4a71df50
FB		 4404
4405 /* check if there is enough room in userspace */
4406 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4b7ae122
JW		 4407 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4408 return -ENOSPC;
4a71df50 4409 }
847a50fd 4410 QETH_CARD_TEXT_(card, 4, "snore%i",
d4c08afa 4411 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4412 QETH_CARD_TEXT_(card, 4, "sseqn%i",
d4c08afa 4413 cmd->data.setadapterparms.hdr.seq_no);
4a71df50 4414 /*copy entries to user buffer*/
9a764c1e 4415 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4a71df50 4416 qinfo->udata_offset += data_len;
9a764c1e 4417
4a71df50
FB		 4418 if (cmd->data.setadapterparms.hdr.seq_no <
4419 cmd->data.setadapterparms.hdr.used_total)
4420 return 1;
4421 return 0;
4422}
4423
942d6984 4424static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4a71df50 4425{
d4c08afa 4426 struct qeth_snmp_ureq __user *ureq;
4a71df50 4427 struct qeth_cmd_buffer *iob;
6fb392b1 4428 unsigned int req_len;
4a71df50
FB		 4429 struct qeth_arp_query_info qinfo = {0, };
4430 int rc = 0;
4431
847a50fd 4432 QETH_CARD_TEXT(card, 3, "snmpcmd");
4a71df50 4433
379ac99e 4434 if (IS_VM_NIC(card))
4a71df50
FB		 4435 return -EOPNOTSUPP;
4436
4437 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4fda3354 4438 IS_LAYER3(card))
4a71df50 4439 return -EOPNOTSUPP;
4fda3354 4440
d4c08afa
JW		 4441 ureq = (struct qeth_snmp_ureq __user *) udata;
4442 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4443 get_user(req_len, &ureq->hdr.req_len))
4444 return -EFAULT;
4445
292a50e3
JW		 4446 /* Sanitize user input, to avoid overflows in iob size calculation: */
4447 if (req_len > QETH_BUFSIZE)
4448 return -EINVAL;
4449
d4c08afa
JW		 4450 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4451 if (!iob)
4452 return -ENOMEM;
4453
4454 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4455 &ureq->cmd, req_len)) {
4456 qeth_put_cmd(iob);
4a71df50 4457 return -EFAULT;
d4c08afa
JW		 4458 }
4459
4a71df50
FB		 4460 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4461 if (!qinfo.udata) {
d4c08afa 4462 qeth_put_cmd(iob);
4a71df50
FB		 4463 return -ENOMEM;
4464 }
4465 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4466
c2153277 4467 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4a71df50 4468 if (rc)
e19e5be8
JW		 4469 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4470 CARD_DEVID(card), rc);
4a71df50
FB		 4471 else {
4472 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4473 rc = -EFAULT;
4474 }
d4c08afa 4475
4a71df50
FB		 4476 kfree(qinfo.udata);
4477 return rc;
4478}
4a71df50 4479
c3ab96f3
FB		 4480static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4481 struct qeth_reply *reply, unsigned long data)
4482{
686c97ee 4483 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
c3ab96f3
FB		 4484 struct qeth_qoat_priv *priv;
4485 char *resdata;
4486 int resdatalen;
4487
4488 QETH_CARD_TEXT(card, 3, "qoatcb");
686c97ee 4489 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4490 return -EIO;
c3ab96f3 4491
c3ab96f3
FB		 4492 priv = (struct qeth_qoat_priv *)reply->param;
4493 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4494 resdata = (char *)data + 28;
4495
4b7ae122
JW		 4496 if (resdatalen > (priv->buffer_len - priv->response_len))
4497 return -ENOSPC;
c3ab96f3
FB		 4498
4499 memcpy((priv->buffer + priv->response_len), resdata,
4500 resdatalen);
4501 priv->response_len += resdatalen;
4502
4503 if (cmd->data.setadapterparms.hdr.seq_no <
4504 cmd->data.setadapterparms.hdr.used_total)
4505 return 1;
4506 return 0;
4507}
4508
942d6984 4509static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
c3ab96f3
FB		 4510{
4511 int rc = 0;
4512 struct qeth_cmd_buffer *iob;
4513 struct qeth_ipa_cmd *cmd;
4514 struct qeth_query_oat *oat_req;
4515 struct qeth_query_oat_data oat_data;
4516 struct qeth_qoat_priv priv;
4517 void __user *tmp;
4518
4519 QETH_CARD_TEXT(card, 3, "qoatcmd");
4520
4521 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4522 rc = -EOPNOTSUPP;
4523 goto out;
4524 }
4525
4526 if (copy_from_user(&oat_data, udata,
4527 sizeof(struct qeth_query_oat_data))) {
4528 rc = -EFAULT;
4529 goto out;
4530 }
4531
4532 priv.buffer_len = oat_data.buffer_len;
4533 priv.response_len = 0;
aec45e85 4534 priv.buffer = vzalloc(oat_data.buffer_len);
c3ab96f3
FB		 4535 if (!priv.buffer) {
4536 rc = -ENOMEM;
4537 goto out;
4538 }
4539
4540 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
b9150461 4541 SETADP_DATA_SIZEOF(query_oat));
1aec42bc
TR		 4542 if (!iob) {
4543 rc = -ENOMEM;
4544 goto out_free;
4545 }
ff5caa7a 4546 cmd = __ipa_cmd(iob);
c3ab96f3
FB		 4547 oat_req = &cmd->data.setadapterparms.data.query_oat;
4548 oat_req->subcmd_code = oat_data.command;
4549
4550 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4551 &priv);
4552 if (!rc) {
4553 if (is_compat_task())
4554 tmp = compat_ptr(oat_data.ptr);
4555 else
4556 tmp = (void __user *)(unsigned long)oat_data.ptr;
4557
4558 if (copy_to_user(tmp, priv.buffer,
4559 priv.response_len)) {
4560 rc = -EFAULT;
4561 goto out_free;
4562 }
4563
4564 oat_data.response_len = priv.response_len;
4565
4566 if (copy_to_user(udata, &oat_data,
4567 sizeof(struct qeth_query_oat_data)))
4568 rc = -EFAULT;
4b7ae122 4569 }
c3ab96f3
FB		 4570
4571out_free:
aec45e85 4572 vfree(priv.buffer);
c3ab96f3
FB		 4573out:
4574 return rc;
4575}
c3ab96f3 4576
e71e4072
HC		 4577static int qeth_query_card_info_cb(struct qeth_card *card,
4578 struct qeth_reply *reply, unsigned long data)
02d5cb5b 4579{
686c97ee
JW		 4580 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4581 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
02d5cb5b 4582 struct qeth_query_card_info *card_info;
02d5cb5b
EC		 4583
4584 QETH_CARD_TEXT(card, 2, "qcrdincb");
686c97ee 4585 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 4586 return -EIO;
02d5cb5b 4587
686c97ee
JW		 4588 card_info = &cmd->data.setadapterparms.data.card_info;
4589 carrier_info->card_type = card_info->card_type;
4590 carrier_info->port_mode = card_info->port_mode;
4591 carrier_info->port_speed = card_info->port_speed;
02d5cb5b
EC		 4592 return 0;
4593}
4594
d896ac62
JW		 4595int qeth_query_card_info(struct qeth_card *card,
4596 struct carrier_info *carrier_info)
02d5cb5b
EC		 4597{
4598 struct qeth_cmd_buffer *iob;
4599
4600 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4601 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4602 return -EOPNOTSUPP;
b9150461 4603 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
1aec42bc
TR		 4604 if (!iob)
4605 return -ENOMEM;
02d5cb5b
EC		 4606 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4607 (void *)carrier_info);
4608}
02d5cb5b 4609
ec61bd2f
JW		 4610/**
4611 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4612 * @card: pointer to a qeth_card
4613 *
4614 * Returns
4615 * 0, if a MAC address has been set for the card's netdevice
4616 * a return code, for various error conditions
4617 */
4618int qeth_vm_request_mac(struct qeth_card *card)
4619{
4620 struct diag26c_mac_resp *response;
4621 struct diag26c_mac_req *request;
4622 struct ccw_dev_id id;
4623 int rc;
4624
57a688aa 4625 QETH_CARD_TEXT(card, 2, "vmreqmac");
ec61bd2f 4626
ec61bd2f
JW		 4627 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4628 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4629 if (!request || !response) {
4630 rc = -ENOMEM;
4631 goto out;
4632 }
4633
46646105 4634 ccw_device_get_id(CARD_DDEV(card), &id);
ec61bd2f
JW		 4635 request->resp_buf_len = sizeof(*response);
4636 request->resp_version = DIAG26C_VERSION2;
4637 request->op_code = DIAG26C_GET_MAC;
4638 request->devno = id.devno;
4639
615dff22 4640 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f 4641 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
615dff22 4642 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f
JW		 4643 if (rc)
4644 goto out;
615dff22 4645 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
ec61bd2f
JW		 4646
4647 if (request->resp_buf_len < sizeof(*response) ||
4648 response->version != request->resp_version) {
4649 rc = -EIO;
57a688aa
JW		 4650 QETH_CARD_TEXT(card, 2, "badresp");
4651 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4652 sizeof(request->resp_buf_len));
ec61bd2f
JW		 4653 } else if (!is_valid_ether_addr(response->mac)) {
4654 rc = -EINVAL;
57a688aa
JW		 4655 QETH_CARD_TEXT(card, 2, "badmac");
4656 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
ec61bd2f
JW		 4657 } else {
4658 ether_addr_copy(card->dev->dev_addr, response->mac);
4659 }
4660
4661out:
4662 kfree(response);
4663 kfree(request);
4664 return rc;
4665}
4666EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4667
d0ff1f52
UB		 4668static void qeth_determine_capabilities(struct qeth_card *card)
4669{
4670 int rc;
d0ff1f52
UB		 4671 struct ccw_device *ddev;
4672 int ddev_offline = 0;
4673
57a688aa 4674 QETH_CARD_TEXT(card, 2, "detcapab");
d0ff1f52
UB		 4675 ddev = CARD_DDEV(card);
4676 if (!ddev->online) {
4677 ddev_offline = 1;
4678 rc = ccw_device_set_online(ddev);
4679 if (rc) {
57a688aa 4680 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
d0ff1f52
UB		 4681 goto out;
4682 }
4683 }
4684
2066e1db 4685 rc = qeth_read_conf_data(card);
d0ff1f52 4686 if (rc) {
e19e5be8
JW		 4687 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4688 CARD_DEVID(card), rc);
57a688aa 4689 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
d0ff1f52
UB		 4690 goto out_offline;
4691 }
d0ff1f52
UB		 4692
4693 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4694 if (rc)
57a688aa 4695 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
d0ff1f52 4696
57a688aa
JW		 4697 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4698 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4699 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4700 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4701 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
0da9581d
EL		 4702 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4703 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4704 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4705 dev_info(&card->gdev->dev,
4706 "Completion Queueing supported\n");
4707 } else {
4708 card->options.cq = QETH_CQ_NOTAVAILABLE;
4709 }
4710
4711
d0ff1f52
UB		 4712out_offline:
4713 if (ddev_offline == 1)
4714 ccw_device_set_offline(ddev);
4715out:
4716 return;
4717}
4718
cef6ff22
JW		 4719static void qeth_qdio_establish_cq(struct qeth_card *card,
4720 struct qdio_buffer **in_sbal_ptrs,
4721 void (**queue_start_poll)
4722 (struct ccw_device *, int,
4723 unsigned long))
4724{
0da9581d
EL		 4725 int i;
4726
4727 if (card->options.cq == QETH_CQ_ENABLED) {
4728 int offset = QDIO_MAX_BUFFERS_PER_Q *
4729 (card->qdio.no_in_queues - 1);
0da9581d
EL		 4730 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4731 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4732 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4733 }
4734
4735 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4736 }
4737}
4738
4a71df50
FB		 4739static int qeth_qdio_establish(struct qeth_card *card)
4740{
4741 struct qdio_initialize init_data;
4742 char *qib_param_field;
4743 struct qdio_buffer **in_sbal_ptrs;
104ea556 4744 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4a71df50
FB		 4745 struct qdio_buffer **out_sbal_ptrs;
4746 int i, j, k;
4747 int rc = 0;
4748
57a688aa 4749 QETH_CARD_TEXT(card, 2, "qdioest");
4a71df50 4750
9f494438 4751 qib_param_field = kzalloc(FIELD_SIZEOF(struct qib, parm), GFP_KERNEL);
104ea556 4752 if (!qib_param_field) {
4753 rc = -ENOMEM;
4754 goto out_free_nothing;
4755 }
4a71df50
FB		 4756
4757 qeth_create_qib_param_field(card, qib_param_field);
4758 qeth_create_qib_param_field_blkt(card, qib_param_field);
4759
6396bb22
KC		 4760 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4761 sizeof(void *),
4a71df50
FB		 4762 GFP_KERNEL);
4763 if (!in_sbal_ptrs) {
104ea556 4764 rc = -ENOMEM;
4765 goto out_free_qib_param;
4a71df50 4766 }
0da9581d 4767 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4a71df50
FB		 4768 in_sbal_ptrs[i] = (struct qdio_buffer *)
4769 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
0da9581d 4770 }
4a71df50 4771
6396bb22 4772 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
0da9581d 4773 GFP_KERNEL);
104ea556 4774 if (!queue_start_poll) {
4775 rc = -ENOMEM;
4776 goto out_free_in_sbals;
4777 }
0da9581d 4778 for (i = 0; i < card->qdio.no_in_queues; ++i)
7bcd64eb 4779 queue_start_poll[i] = qeth_qdio_start_poll;
0da9581d
EL		 4780
4781 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
104ea556 4782
4a71df50 4783 out_sbal_ptrs =
6396bb22
KC		 4784 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4785 sizeof(void *),
4786 GFP_KERNEL);
4a71df50 4787 if (!out_sbal_ptrs) {
104ea556 4788 rc = -ENOMEM;
4789 goto out_free_queue_start_poll;
4a71df50
FB		 4790 }
4791 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4792 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4793 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
0da9581d 4794 card->qdio.out_qs[i]->bufs[j]->buffer);
4a71df50
FB		 4795 }
4796
4797 memset(&init_data, 0, sizeof(struct qdio_initialize));
4798 init_data.cdev = CARD_DDEV(card);
379ac99e
JW		 4799 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4800 QDIO_QETH_QFMT;
4a71df50
FB		 4801 init_data.qib_param_field_format = 0;
4802 init_data.qib_param_field = qib_param_field;
0da9581d 4803 init_data.no_input_qs = card->qdio.no_in_queues;
4a71df50 4804 init_data.no_output_qs = card->qdio.no_out_queues;
7bcd64eb
JW		 4805 init_data.input_handler = qeth_qdio_input_handler;
4806 init_data.output_handler = qeth_qdio_output_handler;
e58b0d90 4807 init_data.queue_start_poll_array = queue_start_poll;
4a71df50 4808 init_data.int_parm = (unsigned long) card;
bdf11767
JW		 4809 init_data.input_sbal_addr_array = in_sbal_ptrs;
4810 init_data.output_sbal_addr_array = out_sbal_ptrs;
0da9581d 4811 init_data.output_sbal_state_array = card->qdio.out_bufstates;
e53edf74 4812 init_data.scan_threshold = IS_IQD(card) ? 0 : 32;
4a71df50
FB		 4813
4814 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4815 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
cc961d40
JG		 4816 rc = qdio_allocate(&init_data);
4817 if (rc) {
4818 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4819 goto out;
4820 }
4821 rc = qdio_establish(&init_data);
4822 if (rc) {
4a71df50 4823 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
cc961d40
JG		 4824 qdio_free(CARD_DDEV(card));
4825 }
4a71df50 4826 }
0da9581d
EL		 4827
4828 switch (card->options.cq) {
4829 case QETH_CQ_ENABLED:
4830 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4831 break;
4832 case QETH_CQ_DISABLED:
4833 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4834 break;
4835 default:
4836 break;
4837 }
cc961d40 4838out:
4a71df50 4839 kfree(out_sbal_ptrs);
104ea556 4840out_free_queue_start_poll:
4841 kfree(queue_start_poll);
4842out_free_in_sbals:
4a71df50 4843 kfree(in_sbal_ptrs);
104ea556 4844out_free_qib_param:
4a71df50 4845 kfree(qib_param_field);
104ea556 4846out_free_nothing:
4a71df50
FB		 4847 return rc;
4848}
4849
4850static void qeth_core_free_card(struct qeth_card *card)
4851{
57a688aa 4852 QETH_CARD_TEXT(card, 2, "freecrd");
4a71df50
FB		 4853 qeth_clean_channel(&card->read);
4854 qeth_clean_channel(&card->write);
f15cdaf2 4855 qeth_clean_channel(&card->data);
c3b2218d 4856 qeth_put_cmd(card->read_cmd);
c0a2e4d1 4857 destroy_workqueue(card->event_wq);
6bcac508 4858 unregister_service_level(&card->qeth_service_level);
a2eb0ad5 4859 dev_set_drvdata(&card->gdev->dev, NULL);
4a71df50
FB		 4860 kfree(card);
4861}
4862
395672e0
SR		 4863void qeth_trace_features(struct qeth_card *card)
4864{
4865 QETH_CARD_TEXT(card, 2, "features");
4d7def2a
TR		 4866 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4867 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4868 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4869 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4870 sizeof(card->info.diagass_support));
395672e0
SR		 4871}
4872EXPORT_SYMBOL_GPL(qeth_trace_features);
4873
4a71df50 4874static struct ccw_device_id qeth_ids[] = {
5113fec0
UB		 4875 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4876 .driver_info = QETH_CARD_TYPE_OSD},
4877 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4878 .driver_info = QETH_CARD_TYPE_IQD},
4879 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4880 .driver_info = QETH_CARD_TYPE_OSN},
4881 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4882 .driver_info = QETH_CARD_TYPE_OSM},
4883 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4884 .driver_info = QETH_CARD_TYPE_OSX},
4a71df50
FB		 4885 {},
4886};
4887MODULE_DEVICE_TABLE(ccw, qeth_ids);
4888
4889static struct ccw_driver qeth_ccw_driver = {
3bda058b 4890 .driver = {
3e70b3b8 4891 .owner = THIS_MODULE,
3bda058b
SO		 4892 .name = "qeth",
4893 },
4a71df50
FB		 4894 .ids = qeth_ids,
4895 .probe = ccwgroup_probe_ccwdev,
4896 .remove = ccwgroup_remove_ccwdev,
4897};
4898
9fae5c3b 4899int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4a71df50 4900{
6ebb7f8d 4901 int retries = 3;
4a71df50
FB		 4902 int rc;
4903
57a688aa 4904 QETH_CARD_TEXT(card, 2, "hrdsetup");
4a71df50 4905 atomic_set(&card->force_alloc_skb, 0);
a4cdc9ba
JW		 4906 rc = qeth_update_from_chp_desc(card);
4907 if (rc)
4908 return rc;
4a71df50 4909retry:
6ebb7f8d 4910 if (retries < 3)
e19e5be8
JW		 4911 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4912 CARD_DEVID(card));
379ac99e 4913 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
aa909224
UB		 4914 ccw_device_set_offline(CARD_DDEV(card));
4915 ccw_device_set_offline(CARD_WDEV(card));
4916 ccw_device_set_offline(CARD_RDEV(card));
22ae2790 4917 qdio_free(CARD_DDEV(card));
aa909224
UB		 4918 rc = ccw_device_set_online(CARD_RDEV(card));
4919 if (rc)
4920 goto retriable;
4921 rc = ccw_device_set_online(CARD_WDEV(card));
4922 if (rc)
4923 goto retriable;
4924 rc = ccw_device_set_online(CARD_DDEV(card));
4925 if (rc)
4926 goto retriable;
aa909224 4927retriable:
4a71df50 4928 if (rc == -ERESTARTSYS) {
57a688aa 4929 QETH_CARD_TEXT(card, 2, "break1");
4a71df50
FB		 4930 return rc;
4931 } else if (rc) {
57a688aa 4932 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
6ebb7f8d 4933 if (--retries < 0)
4a71df50
FB		 4934 goto out;
4935 else
4936 goto retry;
4937 }
d0ff1f52 4938 qeth_determine_capabilities(card);
4a71df50
FB		 4939 qeth_init_tokens(card);
4940 qeth_init_func_level(card);
2e873d10
JW		 4941
4942 rc = qeth_idx_activate_read_channel(card);
4943 if (rc == -EINTR) {
57a688aa 4944 QETH_CARD_TEXT(card, 2, "break2");
4a71df50
FB		 4945 return rc;
4946 } else if (rc) {
57a688aa 4947 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 4948 if (--retries < 0)
4949 goto out;
4950 else
4951 goto retry;
4952 }
2e873d10
JW		 4953
4954 rc = qeth_idx_activate_write_channel(card);
4955 if (rc == -EINTR) {
57a688aa 4956 QETH_CARD_TEXT(card, 2, "break3");
4a71df50
FB		 4957 return rc;
4958 } else if (rc) {
57a688aa 4959 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 4960 if (--retries < 0)
4961 goto out;
4962 else
4963 goto retry;
4964 }
908abbb5 4965 card->read_or_write_problem = 0;
4a71df50
FB		 4966 rc = qeth_mpc_initialize(card);
4967 if (rc) {
57a688aa 4968 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 4969 goto out;
4970 }
1da74b1c 4971
10340510
JW		 4972 rc = qeth_send_startlan(card);
4973 if (rc) {
57a688aa 4974 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4b7ae122
JW		 4975 if (rc == -ENETDOWN) {
4976 dev_warn(&card->gdev->dev, "The LAN is offline\n");
9fae5c3b 4977 *carrier_ok = false;
10340510 4978 } else {
10340510
JW		 4979 goto out;
4980 }
91cc98f5 4981 } else {
9fae5c3b
JW		 4982 *carrier_ok = true;
4983 }
4984
1da74b1c 4985 card->options.ipa4.supported_funcs = 0;
4d7def2a 4986 card->options.ipa6.supported_funcs = 0;
1da74b1c 4987 card->options.adp.supported_funcs = 0;
b4d72c08 4988 card->options.sbp.supported_funcs = 0;
1da74b1c 4989 card->info.diagass_support = 0;
1aec42bc
TR		 4990 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
4991 if (rc == -ENOMEM)
4992 goto out;
ee75fb86
KM		 4993 if (qeth_is_supported(card, IPA_IPV6)) {
4994 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
4995 if (rc == -ENOMEM)
4996 goto out;
4997 }
1aec42bc
TR		 4998 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
4999 rc = qeth_query_setadapterparms(card);
5000 if (rc < 0) {
57a688aa 5001 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
1aec42bc
TR		 5002 goto out;
5003 }
5004 }
5005 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5006 rc = qeth_query_setdiagass(card);
5007 if (rc < 0) {
57a688aa 5008 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
1aec42bc
TR		 5009 goto out;
5010 }
5011 }
9897d583
JW		 5012
5013 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5014 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5015 card->info.hwtrap = 0;
5016
5017 rc = qeth_set_access_ctrl_online(card, 0);
5018 if (rc)
5019 goto out;
5020
4a71df50
FB		 5021 return 0;
5022out:
74eacdb9
FB		 5023 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5024 "an error on the device\n");
e19e5be8
JW		 5025 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5026 CARD_DEVID(card), rc);
4a71df50
FB		 5027 return rc;
5028}
5029EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5030
8d68af6a
JW		 5031static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5032 struct sk_buff *skb, int offset, int data_len)
4a71df50
FB		 5033{
5034 struct page *page = virt_to_page(element->addr);
b6f72f96 5035 unsigned int next_frag;
b3332930 5036
8d68af6a
JW		 5037 /* first fill the linear space */
5038 if (!skb->len) {
5039 unsigned int linear = min(data_len, skb_tailroom(skb));
0da9581d 5040
8d68af6a
JW		 5041 skb_put_data(skb, element->addr + offset, linear);
5042 data_len -= linear;
5043 if (!data_len)
5044 return;
5045 offset += linear;
5046 /* fall through to add page frag for remaining data */
4a71df50 5047 }
0da9581d 5048
8d68af6a 5049 next_frag = skb_shinfo(skb)->nr_frags;
b6f72f96 5050 get_page(page);
8d68af6a 5051 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
4a71df50
FB		 5052}
5053
bca51650
TR		 5054static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5055{
5056 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5057}
5058
4a71df50 5059struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
b3332930 5060 struct qeth_qdio_buffer *qethbuffer,
4a71df50
FB		 5061 struct qdio_buffer_element **__element, int *__offset,
5062 struct qeth_hdr **hdr)
5063{
5064 struct qdio_buffer_element *element = *__element;
b3332930 5065 struct qdio_buffer *buffer = qethbuffer->buffer;
4a71df50 5066 int offset = *__offset;
17caeaa4
JW		 5067 bool use_rx_sg = false;
5068 unsigned int headroom;
8d68af6a 5069 struct sk_buff *skb;
76b11f8e 5070 int skb_len = 0;
4a71df50
FB		 5071 void *data_ptr;
5072 int data_len;
4a71df50 5073
7d4faee7 5074next_packet:
4a71df50 5075 /* qeth_hdr must not cross element boundaries */
864c17c3 5076 while (element->length < offset + sizeof(struct qeth_hdr)) {
4a71df50
FB		 5077 if (qeth_is_last_sbale(element))
5078 return NULL;
5079 element++;
5080 offset = 0;
4a71df50
FB		 5081 }
5082 *hdr = element->addr + offset;
5083
5084 offset += sizeof(struct qeth_hdr);
76b11f8e
UB		 5085 switch ((*hdr)->hdr.l2.id) {
5086 case QETH_HEADER_TYPE_LAYER2:
5087 skb_len = (*hdr)->hdr.l2.pkt_length;
17caeaa4 5088 headroom = 0;
76b11f8e
UB		 5089 break;
5090 case QETH_HEADER_TYPE_LAYER3:
4a71df50 5091 skb_len = (*hdr)->hdr.l3.length;
7d4faee7
JW		 5092 if (!IS_LAYER3(card)) {
5093 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5094 skb = NULL;
5095 goto walk_packet;
5096 }
5097
1abd2296 5098 headroom = ETH_HLEN;
76b11f8e
UB		 5099 break;
5100 case QETH_HEADER_TYPE_OSN:
5101 skb_len = (*hdr)->hdr.osn.pdu_length;
7d4faee7
JW		 5102 if (!IS_OSN(card)) {
5103 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5104 skb = NULL;
5105 goto walk_packet;
5106 }
5107
76b11f8e
UB		 5108 headroom = sizeof(struct qeth_hdr);
5109 break;
5110 default:
5fd3fcbb
JW		 5111 if ((*hdr)->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5112 QETH_CARD_STAT_INC(card, rx_frame_errors);
5113 else
5114 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5115
7d4faee7
JW		 5116 /* Can't determine packet length, drop the whole buffer. */
5117 return NULL;
4a71df50
FB		 5118 }
5119
5120 if (!skb_len)
5121 return NULL;
5122
17caeaa4
JW		 5123 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5124 ((skb_len >= card->options.rx_sg_cb) &&
5125 !atomic_read(&card->force_alloc_skb) &&
5126 !IS_OSN(card));
8d68af6a
JW		 5127
5128 if (use_rx_sg && qethbuffer->rx_skb) {
5129 /* QETH_CQ_ENABLED only: */
5130 skb = qethbuffer->rx_skb;
5131 qethbuffer->rx_skb = NULL;
4a71df50 5132 } else {
8d68af6a
JW		 5133 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5134
37cf05d2 5135 skb = napi_alloc_skb(&card->napi, linear + headroom);
4a71df50 5136 }
17caeaa4 5137
8d68af6a 5138 if (!skb)
17caeaa4
JW		 5139 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5140 else if (headroom)
8d68af6a 5141 skb_reserve(skb, headroom);
4a71df50 5142
7d4faee7 5143walk_packet:
4a71df50
FB		 5144 data_ptr = element->addr + offset;
5145 while (skb_len) {
5146 data_len = min(skb_len, (int)(element->length - offset));
7d4faee7
JW		 5147
5148 if (skb && data_len) {
8d68af6a
JW		 5149 if (use_rx_sg)
5150 qeth_create_skb_frag(element, skb, offset,
5151 data_len);
5152 else
59ae1d12 5153 skb_put_data(skb, data_ptr, data_len);
4a71df50
FB		 5154 }
5155 skb_len -= data_len;
5156 if (skb_len) {
5157 if (qeth_is_last_sbale(element)) {
847a50fd 5158 QETH_CARD_TEXT(card, 4, "unexeob");
efd5d9a4 5159 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
7d4faee7
JW		 5160 if (skb) {
5161 dev_kfree_skb_any(skb);
5162 QETH_CARD_STAT_INC(card,
5163 rx_length_errors);
5164 }
4a71df50
FB		 5165 return NULL;
5166 }
5167 element++;
5168 offset = 0;
5169 data_ptr = element->addr;
5170 } else {
5171 offset += data_len;
5172 }
5173 }
7d4faee7
JW		 5174
5175 /* This packet was skipped, go get another one: */
5176 if (!skb)
5177 goto next_packet;
5178
4a71df50
FB		 5179 *__element = element;
5180 *__offset = offset;
b0abc4f5
JW		 5181 if (use_rx_sg) {
5182 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5183 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5184 skb_shinfo(skb)->nr_frags);
4a71df50
FB		 5185 }
5186 return skb;
4a71df50
FB		 5187}
5188EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5189
d73ef324
JW		 5190int qeth_poll(struct napi_struct *napi, int budget)
5191{
5192 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5193 int work_done = 0;
5194 struct qeth_qdio_buffer *buffer;
5195 int done;
5196 int new_budget = budget;
5197
d73ef324
JW		 5198 while (1) {
5199 if (!card->rx.b_count) {
5200 card->rx.qdio_err = 0;
5201 card->rx.b_count = qdio_get_next_buffers(
5202 card->data.ccwdev, 0, &card->rx.b_index,
5203 &card->rx.qdio_err);
5204 if (card->rx.b_count <= 0) {
5205 card->rx.b_count = 0;
5206 break;
5207 }
5208 card->rx.b_element =
5209 &card->qdio.in_q->bufs[card->rx.b_index]
5210 .buffer->element[0];
5211 card->rx.e_offset = 0;
5212 }
5213
5214 while (card->rx.b_count) {
5215 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5216 if (!(card->rx.qdio_err &&
5217 qeth_check_qdio_errors(card, buffer->buffer,
5218 card->rx.qdio_err, "qinerr")))
5219 work_done +=
5220 card->discipline->process_rx_buffer(
5221 card, new_budget, &done);
5222 else
5223 done = 1;
5224
5225 if (done) {
b0abc4f5 5226 QETH_CARD_STAT_INC(card, rx_bufs);
d73ef324
JW		 5227 qeth_put_buffer_pool_entry(card,
5228 buffer->pool_entry);
5229 qeth_queue_input_buffer(card, card->rx.b_index);
5230 card->rx.b_count--;
5231 if (card->rx.b_count) {
5232 card->rx.b_index =
ec2b559d 5233 QDIO_BUFNR(card->rx.b_index + 1);
d73ef324
JW		 5234 card->rx.b_element =
5235 &card->qdio.in_q
5236 ->bufs[card->rx.b_index]
5237 .buffer->element[0];
5238 card->rx.e_offset = 0;
5239 }
5240 }
5241
5242 if (work_done >= budget)
5243 goto out;
5244 else
5245 new_budget = budget - work_done;
5246 }
5247 }
5248
f9ce416a
JW		 5249 if (napi_complete_done(napi, work_done) &&
5250 qdio_start_irq(CARD_DDEV(card), 0))
5251 napi_schedule(napi);
d73ef324 5252out:
d73ef324
JW		 5253 return work_done;
5254}
5255EXPORT_SYMBOL_GPL(qeth_poll);
5256
e53edf74 5257static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
85e537d8 5258 unsigned int bidx, bool error, int budget)
e53edf74
JW		 5259{
5260 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5261 u8 sflags = buffer->buffer->element[15].sflags;
5262 struct qeth_card *card = queue->card;
5263
5264 if (queue->bufstates && (queue->bufstates[bidx].flags &
5265 QDIO_OUTBUF_STATE_FLAG_PENDING)) {
5266 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
5267
5268 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
5269 QETH_QDIO_BUF_PENDING) ==
5270 QETH_QDIO_BUF_PRIMED)
5271 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5272
5273 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5274
5275 /* prepare the queue slot for re-use: */
5276 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5277 if (qeth_init_qdio_out_buf(queue, bidx)) {
5278 QETH_CARD_TEXT(card, 2, "outofbuf");
5279 qeth_schedule_recovery(card);
5280 }
5281
5282 return;
5283 }
5284
5285 if (card->options.cq == QETH_CQ_ENABLED)
5286 qeth_notify_skbs(queue, buffer,
5287 qeth_compute_cq_notification(sflags, 0));
85e537d8 5288 qeth_clear_output_buffer(queue, buffer, error, budget);
e53edf74
JW		 5289}
5290
5291static int qeth_tx_poll(struct napi_struct *napi, int budget)
5292{
5293 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5294 unsigned int queue_no = queue->queue_no;
5295 struct qeth_card *card = queue->card;
5296 struct net_device *dev = card->dev;
5297 unsigned int work_done = 0;
5298 struct netdev_queue *txq;
5299
5300 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5301
5302 while (1) {
5303 unsigned int start, error, i;
96bd6c94
JW		 5304 unsigned int packets = 0;
5305 unsigned int bytes = 0;
e53edf74
JW		 5306 int completed;
5307
5308 if (qeth_out_queue_is_empty(queue)) {
5309 napi_complete(napi);
5310 return 0;
5311 }
5312
5313 /* Give the CPU a breather: */
5314 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5315 QETH_TXQ_STAT_INC(queue, completion_yield);
5316 if (napi_complete_done(napi, 0))
5317 napi_schedule(napi);
5318 return 0;
5319 }
5320
5321 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
5322 &start, &error);
5323 if (completed <= 0) {
5324 /* Ensure we see TX completion for pending work: */
5325 if (napi_complete_done(napi, 0))
5326 qeth_tx_arm_timer(queue);
5327 return 0;
5328 }
5329
5330 for (i = start; i < start + completed; i++) {
96bd6c94 5331 struct qeth_qdio_out_buffer *buffer;
e53edf74
JW		 5332 unsigned int bidx = QDIO_BUFNR(i);
5333
96bd6c94
JW		 5334 buffer = queue->bufs[bidx];
5335 packets += skb_queue_len(&buffer->skb_list);
5336 bytes += buffer->bytes;
5337
5338 qeth_handle_send_error(card, buffer, error);
85e537d8 5339 qeth_iqd_tx_complete(queue, bidx, error, budget);
e53edf74
JW		 5340 qeth_cleanup_handled_pending(queue, bidx, false);
5341 }
5342
96bd6c94 5343 netdev_tx_completed_queue(txq, packets, bytes);
e53edf74
JW		 5344 atomic_sub(completed, &queue->used_buffers);
5345 work_done += completed;
5346
5347 /* xmit may have observed the full-condition, but not yet
5348 * stopped the txq. In which case the code below won't trigger.
5349 * So before returning, xmit will re-check the txq's fill level
5350 * and wake it up if needed.
5351 */
5352 if (netif_tx_queue_stopped(txq) &&
5353 !qeth_out_queue_is_full(queue))
5354 netif_tx_wake_queue(txq);
5355 }
5356}
5357
ad3cbf61
JW		 5358static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5359{
5360 if (!cmd->hdr.return_code)
5361 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5362 return cmd->hdr.return_code;
5363}
5364
4666d7fb
JW		 5365static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5366 struct qeth_reply *reply,
5367 unsigned long data)
5368{
5369 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5370 struct qeth_ipa_caps *caps = reply->param;
5371
5372 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 5373 return -EIO;
4666d7fb
JW		 5374
5375 caps->supported = cmd->data.setassparms.data.caps.supported;
5376 caps->enabled = cmd->data.setassparms.data.caps.enabled;
5377 return 0;
5378}
5379
8f43fb00
TR		 5380int qeth_setassparms_cb(struct qeth_card *card,
5381 struct qeth_reply *reply, unsigned long data)
4d7def2a 5382{
742d4d40 5383 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4d7def2a
TR		 5384
5385 QETH_CARD_TEXT(card, 4, "defadpcb");
5386
742d4d40
JW		 5387 if (cmd->hdr.return_code)
5388 return -EIO;
5389
5390 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5391 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5392 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5393 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5394 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
4d7def2a
TR		 5395 return 0;
5396}
8f43fb00 5397EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
4d7def2a 5398
b475e316
TR		 5399struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5400 enum qeth_ipa_funcs ipa_func,
b9150461
JW		 5401 u16 cmd_code,
5402 unsigned int data_length,
b475e316 5403 enum qeth_prot_versions prot)
4d7def2a 5404{
b9150461
JW		 5405 struct qeth_ipacmd_setassparms *setassparms;
5406 struct qeth_ipacmd_setassparms_hdr *hdr;
4d7def2a 5407 struct qeth_cmd_buffer *iob;
4d7def2a
TR		 5408
5409 QETH_CARD_TEXT(card, 4, "getasscm");
b9150461
JW		 5410 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5411 data_length +
5412 offsetof(struct qeth_ipacmd_setassparms,
5413 data));
5414 if (!iob)
5415 return NULL;
4d7def2a 5416
b9150461
JW		 5417 setassparms = &__ipa_cmd(iob)->data.setassparms;
5418 setassparms->assist_no = ipa_func;
4d7def2a 5419
b9150461
JW		 5420 hdr = &setassparms->hdr;
5421 hdr->length = sizeof(*hdr) + data_length;
5422 hdr->command_code = cmd_code;
4d7def2a
TR		 5423 return iob;
5424}
b475e316 5425EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
4d7def2a 5426
a8155b00
KM		 5427int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5428 enum qeth_ipa_funcs ipa_func,
1c696c89 5429 u16 cmd_code, u32 *data,
a8155b00 5430 enum qeth_prot_versions prot)
4d7def2a 5431{
1c696c89 5432 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
4d7def2a
TR		 5433 struct qeth_cmd_buffer *iob;
5434
a8155b00 5435 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
a8155b00 5436 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
4d7def2a
TR		 5437 if (!iob)
5438 return -ENOMEM;
4fa55fa9 5439
1c696c89
JW		 5440 if (data)
5441 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
4fa55fa9 5442 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
4d7def2a 5443}
a8155b00 5444EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
4d7def2a 5445
4a71df50
FB		 5446static void qeth_unregister_dbf_views(void)
5447{
d11ba0c4
PT		 5448 int x;
5449 for (x = 0; x < QETH_DBF_INFOS; x++) {
5450 debug_unregister(qeth_dbf[x].id);
5451 qeth_dbf[x].id = NULL;
5452 }
4a71df50
FB		 5453}
5454
8e96c51c 5455void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
cd023216
PT		 5456{
5457 char dbf_txt_buf[32];
345aa66e 5458 va_list args;
cd023216 5459
8e6a8285 5460 if (!debug_level_enabled(id, level))
cd023216 5461 return;
345aa66e
PT		 5462 va_start(args, fmt);
5463 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5464 va_end(args);
8e96c51c 5465 debug_text_event(id, level, dbf_txt_buf);
cd023216
PT		 5466}
5467EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5468
4a71df50
FB		 5469static int qeth_register_dbf_views(void)
5470{
d11ba0c4
PT		 5471 int ret;
5472 int x;
5473
5474 for (x = 0; x < QETH_DBF_INFOS; x++) {
5475 /* register the areas */
5476 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5477 qeth_dbf[x].pages,
5478 qeth_dbf[x].areas,
5479 qeth_dbf[x].len);
5480 if (qeth_dbf[x].id == NULL) {
5481 qeth_unregister_dbf_views();
5482 return -ENOMEM;
5483 }
4a71df50 5484
d11ba0c4
PT		 5485 /* register a view */
5486 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5487 if (ret) {
5488 qeth_unregister_dbf_views();
5489 return ret;
5490 }
4a71df50 5491
d11ba0c4
PT		 5492 /* set a passing level */
5493 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5494 }
4a71df50
FB		 5495
5496 return 0;
5497}
5498
a70fee3b
JW		 5499static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
5500
4a71df50
FB		 5501int qeth_core_load_discipline(struct qeth_card *card,
5502 enum qeth_discipline_id discipline)
5503{
2022e00c 5504 mutex_lock(&qeth_mod_mutex);
4a71df50
FB		 5505 switch (discipline) {
5506 case QETH_DISCIPLINE_LAYER3:
c041f2d4
SO		 5507 card->discipline = try_then_request_module(
5508 symbol_get(qeth_l3_discipline), "qeth_l3");
4a71df50
FB		 5509 break;
5510 case QETH_DISCIPLINE_LAYER2:
c041f2d4
SO		 5511 card->discipline = try_then_request_module(
5512 symbol_get(qeth_l2_discipline), "qeth_l2");
4a71df50 5513 break;
c70eb09d
JW		 5514 default:
5515 break;
4a71df50 5516 }
a70fee3b 5517 mutex_unlock(&qeth_mod_mutex);
c70eb09d 5518
c041f2d4 5519 if (!card->discipline) {
74eacdb9
FB		 5520 dev_err(&card->gdev->dev, "There is no kernel module to "
5521 "support discipline %d\n", discipline);
a70fee3b 5522 return -EINVAL;
4a71df50 5523 }
a70fee3b 5524
c1a935f6 5525 card->options.layer = discipline;
a70fee3b 5526 return 0;
4a71df50
FB		 5527}
5528
5529void qeth_core_free_discipline(struct qeth_card *card)
5530{
4fda3354 5531 if (IS_LAYER2(card))
c041f2d4 5532 symbol_put(qeth_l2_discipline);
4a71df50 5533 else
c041f2d4 5534 symbol_put(qeth_l3_discipline);
c1a935f6 5535 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
c041f2d4 5536 card->discipline = NULL;
4a71df50
FB		 5537}
5538
2d2ebb3e 5539const struct device_type qeth_generic_devtype = {
b7169c51
SO		 5540 .name = "qeth_generic",
5541 .groups = qeth_generic_attr_groups,
5542};
2d2ebb3e
JW		 5543EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5544
b7169c51
SO		 5545static const struct device_type qeth_osn_devtype = {
5546 .name = "qeth_osn",
5547 .groups = qeth_osn_attr_groups,
5548};
5549
819dc537
SR		 5550#define DBF_NAME_LEN 20
5551
5552struct qeth_dbf_entry {
5553 char dbf_name[DBF_NAME_LEN];
5554 debug_info_t *dbf_info;
5555 struct list_head dbf_list;
5556};
5557
5558static LIST_HEAD(qeth_dbf_list);
5559static DEFINE_MUTEX(qeth_dbf_list_mutex);
5560
5561static debug_info_t *qeth_get_dbf_entry(char *name)
5562{
5563 struct qeth_dbf_entry *entry;
5564 debug_info_t *rc = NULL;
5565
5566 mutex_lock(&qeth_dbf_list_mutex);
5567 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5568 if (strcmp(entry->dbf_name, name) == 0) {
5569 rc = entry->dbf_info;
5570 break;
5571 }
5572 }
5573 mutex_unlock(&qeth_dbf_list_mutex);
5574 return rc;
5575}
5576
5577static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5578{
5579 struct qeth_dbf_entry *new_entry;
5580
5581 card->debug = debug_register(name, 2, 1, 8);
5582 if (!card->debug) {
5583 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5584 goto err;
5585 }
5586 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5587 goto err_dbg;
5588 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5589 if (!new_entry)
5590 goto err_dbg;
5591 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5592 new_entry->dbf_info = card->debug;
5593 mutex_lock(&qeth_dbf_list_mutex);
5594 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5595 mutex_unlock(&qeth_dbf_list_mutex);
5596
5597 return 0;
5598
5599err_dbg:
5600 debug_unregister(card->debug);
5601err:
5602 return -ENOMEM;
5603}
5604
5605static void qeth_clear_dbf_list(void)
5606{
5607 struct qeth_dbf_entry *entry, *tmp;
5608
5609 mutex_lock(&qeth_dbf_list_mutex);
5610 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5611 list_del(&entry->dbf_list);
5612 debug_unregister(entry->dbf_info);
5613 kfree(entry);
5614 }
5615 mutex_unlock(&qeth_dbf_list_mutex);
5616}
5617
d3d1b205
JW		 5618static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5619{
5620 struct net_device *dev;
5621
5622 switch (card->info.type) {
5623 case QETH_CARD_TYPE_IQD:
3a18d754
JW		 5624 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN,
5625 ether_setup, QETH_MAX_QUEUES, 1);
d3d1b205 5626 break;
73dc2daf
JW		 5627 case QETH_CARD_TYPE_OSM:
5628 dev = alloc_etherdev(0);
5629 break;
d3d1b205
JW		 5630 case QETH_CARD_TYPE_OSN:
5631 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5632 break;
5633 default:
73dc2daf 5634 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1);
d3d1b205
JW		 5635 }
5636
5637 if (!dev)
5638 return NULL;
5639
5640 dev->ml_priv = card;
5641 dev->watchdog_timeo = QETH_TX_TIMEOUT;
72f219da 5642 dev->min_mtu = IS_OSN(card) ? 64 : 576;
8ce7a9e0
JW		 5643 /* initialized when device first goes online: */
5644 dev->max_mtu = 0;
5645 dev->mtu = 0;
d3d1b205
JW		 5646 SET_NETDEV_DEV(dev, &card->gdev->dev);
5647 netif_carrier_off(dev);
5f89eca5 5648
d896ac62
JW		 5649 if (IS_OSN(card)) {
5650 dev->ethtool_ops = &qeth_osn_ethtool_ops;
5651 } else {
5652 dev->ethtool_ops = &qeth_ethtool_ops;
5f89eca5
JW		 5653 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5654 dev->hw_features |= NETIF_F_SG;
5655 dev->vlan_features |= NETIF_F_SG;
3a18d754 5656 if (IS_IQD(card)) {
04db741d 5657 dev->features |= NETIF_F_SG;
bd966839
JW		 5658 if (netif_set_real_num_tx_queues(dev,
5659 QETH_IQD_MIN_TXQ)) {
5660 free_netdev(dev);
5661 return NULL;
5662 }
3a18d754 5663 }
5f89eca5
JW		 5664 }
5665
d3d1b205
JW		 5666 return dev;
5667}
5668
5669struct net_device *qeth_clone_netdev(struct net_device *orig)
5670{
5671 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5672
5673 if (!clone)
5674 return NULL;
5675
5676 clone->dev_port = orig->dev_port;
5677 return clone;
5678}
5679
4a71df50
FB		 5680static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5681{
5682 struct qeth_card *card;
5683 struct device *dev;
5684 int rc;
c70eb09d 5685 enum qeth_discipline_id enforced_disc;
819dc537 5686 char dbf_name[DBF_NAME_LEN];
4a71df50 5687
d11ba0c4 5688 QETH_DBF_TEXT(SETUP, 2, "probedev");
4a71df50
FB		 5689
5690 dev = &gdev->dev;
5691 if (!get_device(dev))
5692 return -ENODEV;
5693
2a0217d5 5694 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4a71df50 5695
121ca39a 5696 card = qeth_alloc_card(gdev);
4a71df50 5697 if (!card) {
d11ba0c4 5698 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4a71df50
FB		 5699 rc = -ENOMEM;
5700 goto err_dev;
5701 }
af039068
CO		 5702
5703 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5704 dev_name(&gdev->dev));
819dc537 5705 card->debug = qeth_get_dbf_entry(dbf_name);
af039068 5706 if (!card->debug) {
819dc537
SR		 5707 rc = qeth_add_dbf_entry(card, dbf_name);
5708 if (rc)
5709 goto err_card;
af039068 5710 }
af039068 5711
95f4d8b7 5712 qeth_setup_card(card);
d3d1b205 5713 card->dev = qeth_alloc_netdev(card);
778b1ac7
JW		 5714 if (!card->dev) {
5715 rc = -ENOMEM;
d3d1b205 5716 goto err_card;
778b1ac7 5717 }
d3d1b205 5718
73dc2daf
JW		 5719 card->qdio.no_out_queues = card->dev->num_tx_queues;
5720 rc = qeth_update_from_chp_desc(card);
5721 if (rc)
5722 goto err_chp_desc;
c70eb09d 5723 qeth_determine_capabilities(card);
09ac887f
JW		 5724 qeth_set_blkt_defaults(card);
5725
c70eb09d
JW		 5726 enforced_disc = qeth_enforce_discipline(card);
5727 switch (enforced_disc) {
5728 case QETH_DISCIPLINE_UNDETERMINED:
5729 gdev->dev.type = &qeth_generic_devtype;
5730 break;
5731 default:
5732 card->info.layer_enforced = true;
5733 rc = qeth_core_load_discipline(card, enforced_disc);
5113fec0 5734 if (rc)
d3d1b205 5735 goto err_load;
2d2ebb3e 5736
379ac99e
JW		 5737 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
5738 card->discipline->devtype;
c041f2d4 5739 rc = card->discipline->setup(card->gdev);
4a71df50 5740 if (rc)
5113fec0 5741 goto err_disc;
2d2ebb3e 5742 break;
4a71df50
FB		 5743 }
5744
4a71df50
FB		 5745 return 0;
5746
5113fec0
UB		 5747err_disc:
5748 qeth_core_free_discipline(card);
d3d1b205 5749err_load:
a4cdc9ba 5750err_chp_desc:
73dc2daf 5751 free_netdev(card->dev);
4a71df50
FB		 5752err_card:
5753 qeth_core_free_card(card);
5754err_dev:
5755 put_device(dev);
5756 return rc;
5757}
5758
5759static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5760{
4a71df50
FB		 5761 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5762
57a688aa 5763 QETH_CARD_TEXT(card, 2, "removedv");
4a71df50 5764
c041f2d4
SO		 5765 if (card->discipline) {
5766 card->discipline->remove(gdev);
9dc48ccc
UB		 5767 qeth_core_free_discipline(card);
5768 }
5769
8311c7a2
JW		 5770 qeth_free_qdio_queues(card);
5771
d3d1b205 5772 free_netdev(card->dev);
4a71df50 5773 qeth_core_free_card(card);
4a71df50 5774 put_device(&gdev->dev);
4a71df50
FB		 5775}
5776
5777static int qeth_core_set_online(struct ccwgroup_device *gdev)
5778{
5779 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5780 int rc = 0;
c70eb09d 5781 enum qeth_discipline_id def_discipline;
4a71df50 5782
c041f2d4 5783 if (!card->discipline) {
379ac99e
JW		 5784 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
5785 QETH_DISCIPLINE_LAYER2;
4a71df50
FB		 5786 rc = qeth_core_load_discipline(card, def_discipline);
5787 if (rc)
5788 goto err;
c041f2d4 5789 rc = card->discipline->setup(card->gdev);
9111e788
UB		 5790 if (rc) {
5791 qeth_core_free_discipline(card);
4a71df50 5792 goto err;
9111e788 5793 }
4a71df50 5794 }
c041f2d4 5795 rc = card->discipline->set_online(gdev);
4a71df50
FB		 5796err:
5797 return rc;
5798}
5799
5800static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5801{
5802 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
c041f2d4 5803 return card->discipline->set_offline(gdev);
4a71df50
FB		 5804}
5805
5806static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5807{
5808 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
96d1bb53
JW		 5809 qeth_set_allowed_threads(card, 0, 1);
5810 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5811 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5812 qeth_qdio_clear_card(card, 0);
41c47da3 5813 qeth_drain_output_queues(card);
96d1bb53 5814 qdio_free(CARD_DDEV(card));
4a71df50
FB		 5815}
5816
c4733c32 5817static int qeth_suspend(struct ccwgroup_device *gdev)
bbcfcdc8
FB		 5818{
5819 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
bbcfcdc8 5820
c4733c32
JW		 5821 qeth_set_allowed_threads(card, 0, 1);
5822 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
5823 if (gdev->state == CCWGROUP_OFFLINE)
5824 return 0;
5825
5826 card->discipline->set_offline(gdev);
bbcfcdc8
FB		 5827 return 0;
5828}
5829
c4733c32 5830static int qeth_resume(struct ccwgroup_device *gdev)
bbcfcdc8
FB		 5831{
5832 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
c4733c32
JW		 5833 int rc;
5834
5835 rc = card->discipline->set_online(gdev);
5836
5837 qeth_set_allowed_threads(card, 0xffffffff, 0);
5838 if (rc)
5839 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n");
5840 return rc;
bbcfcdc8
FB		 5841}
5842
36369569
GKH		 5843static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5844 size_t count)
4a71df50
FB		 5845{
5846 int err;
4a71df50 5847
6d8769ab
JW		 5848 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5849 buf);
b7169c51
SO		 5850
5851 return err ? err : count;
5852}
36369569 5853static DRIVER_ATTR_WO(group);
4a71df50 5854
f47e2256
SO		 5855static struct attribute *qeth_drv_attrs[] = {
5856 &driver_attr_group.attr,
5857 NULL,
5858};
5859static struct attribute_group qeth_drv_attr_group = {
5860 .attrs = qeth_drv_attrs,
5861};
5862static const struct attribute_group *qeth_drv_attr_groups[] = {
5863 &qeth_drv_attr_group,
5864 NULL,
5865};
5866
6d8769ab
JW		 5867static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5868 .driver = {
5869 .groups = qeth_drv_attr_groups,
5870 .owner = THIS_MODULE,
5871 .name = "qeth",
5872 },
5873 .ccw_driver = &qeth_ccw_driver,
5874 .setup = qeth_core_probe_device,
5875 .remove = qeth_core_remove_device,
5876 .set_online = qeth_core_set_online,
5877 .set_offline = qeth_core_set_offline,
5878 .shutdown = qeth_core_shutdown,
5879 .prepare = NULL,
5880 .complete = NULL,
c4733c32
JW		 5881 .freeze = qeth_suspend,
5882 .thaw = qeth_resume,
5883 .restore = qeth_resume,
6d8769ab
JW		 5884};
5885
d7d18da1
JW		 5886struct qeth_card *qeth_get_card_by_busid(char *bus_id)
5887{
5888 struct ccwgroup_device *gdev;
5889 struct qeth_card *card;
5890
5891 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
5892 if (!gdev)
5893 return NULL;
5894
5895 card = dev_get_drvdata(&gdev->dev);
5896 put_device(&gdev->dev);
5897 return card;
5898}
5899EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
5900
942d6984
JW		 5901int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5902{
5903 struct qeth_card *card = dev->ml_priv;
5904 struct mii_ioctl_data *mii_data;
5905 int rc = 0;
5906
5907 if (!card)
5908 return -ENODEV;
5909
942d6984
JW		 5910 switch (cmd) {
5911 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5912 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5913 break;
5914 case SIOC_QETH_GET_CARD_TYPE:
379ac99e
JW		 5915 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
5916 !IS_VM_NIC(card))
942d6984 5917 return 1;
379ac99e 5918 return 0;
942d6984
JW		 5919 case SIOCGMIIPHY:
5920 mii_data = if_mii(rq);
5921 mii_data->phy_id = 0;
5922 break;
5923 case SIOCGMIIREG:
5924 mii_data = if_mii(rq);
5925 if (mii_data->phy_id != 0)
5926 rc = -EINVAL;
5927 else
5928 mii_data->val_out = qeth_mdio_read(dev,
5929 mii_data->phy_id, mii_data->reg_num);
5930 break;
5931 case SIOC_QETH_QUERY_OAT:
5932 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5933 break;
5934 default:
5935 if (card->discipline->do_ioctl)
5936 rc = card->discipline->do_ioctl(dev, rq, cmd);
5937 else
5938 rc = -EOPNOTSUPP;
5939 }
5940 if (rc)
5941 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5942 return rc;
5943}
5944EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5945
4386e34f
JW		 5946static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
5947 unsigned long data)
c9475369
TR		 5948{
5949 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4386e34f 5950 u32 *features = reply->param;
c9475369 5951
ad3cbf61 5952 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 5953 return -EIO;
c9475369 5954
4386e34f 5955 *features = cmd->data.setassparms.data.flags_32bit;
c9475369
TR		 5956 return 0;
5957}
5958
4386e34f
JW		 5959static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5960 enum qeth_prot_versions prot)
c9475369 5961{
1c696c89
JW		 5962 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
5963 NULL, prot);
c9475369
TR		 5964}
5965
4386e34f
JW		 5966static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5967 enum qeth_prot_versions prot)
4d7def2a 5968{
571f9dd8 5969 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
4386e34f
JW		 5970 struct qeth_cmd_buffer *iob;
5971 struct qeth_ipa_caps caps;
5972 u32 features;
4d7def2a
TR		 5973 int rc;
5974
7e83747d
JW		 5975 /* some L3 HW requires combined L3+L4 csum offload: */
5976 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
5977 cstype == IPA_OUTBOUND_CHECKSUM)
571f9dd8 5978 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
7e83747d 5979
4386e34f
JW		 5980 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
5981 prot);
5982 if (!iob)
5983 return -ENOMEM;
5984
5985 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
5986 if (rc)
4d7def2a 5987 return rc;
7e83747d 5988
4386e34f
JW		 5989 if ((required_features & features) != required_features) {
5990 qeth_set_csum_off(card, cstype, prot);
5991 return -EOPNOTSUPP;
5992 }
7e83747d 5993
b9150461
JW		 5994 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
5995 SETASS_DATA_SIZEOF(flags_32bit),
a8155b00 5996 prot);
4386e34f
JW		 5997 if (!iob) {
5998 qeth_set_csum_off(card, cstype, prot);
5999 return -ENOMEM;
f9d8e6dc 6000 }
4386e34f
JW		 6001
6002 if (features & QETH_IPA_CHECKSUM_LP2LP)
6003 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6004 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6005 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4d7def2a 6006 if (rc) {
4386e34f 6007 qeth_set_csum_off(card, cstype, prot);
4d7def2a
TR		 6008 return rc;
6009 }
8f43fb00 6010
4386e34f
JW		 6011 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6012 !qeth_ipa_caps_enabled(&caps, required_features)) {
6013 qeth_set_csum_off(card, cstype, prot);
6014 return -EOPNOTSUPP;
6015 }
6016
a8155b00
KM		 6017 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6018 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
4386e34f
JW		 6019 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
6020 cstype == IPA_OUTBOUND_CHECKSUM)
6021 dev_warn(&card->gdev->dev,
6022 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6023 QETH_CARD_IFNAME(card));
4d7def2a
TR		 6024 return 0;
6025}
6026
a8155b00
KM		 6027static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6028 enum qeth_prot_versions prot)
4d7def2a 6029{
742d4d40
JW		 6030 return on ? qeth_set_csum_on(card, cstype, prot) :
6031 qeth_set_csum_off(card, cstype, prot);
4d7def2a 6032}
4d7def2a 6033
4666d7fb
JW		 6034static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6035 unsigned long data)
6036{
6037 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6038 struct qeth_tso_start_data *tso_data = reply->param;
6039
6040 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6041 return -EIO;
4666d7fb
JW		 6042
6043 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6044 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6045 return 0;
6046}
6047
1f83b817
JW		 6048static int qeth_set_tso_off(struct qeth_card *card,
6049 enum qeth_prot_versions prot)
4d7def2a 6050{
1f83b817 6051 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
1c696c89 6052 IPA_CMD_ASS_STOP, NULL, prot);
1f83b817 6053}
4d7def2a 6054
1f83b817
JW		 6055static int qeth_set_tso_on(struct qeth_card *card,
6056 enum qeth_prot_versions prot)
6057{
4666d7fb
JW		 6058 struct qeth_tso_start_data tso_data;
6059 struct qeth_cmd_buffer *iob;
6060 struct qeth_ipa_caps caps;
6061 int rc;
6062
6063 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6064 IPA_CMD_ASS_START, 0, prot);
6065 if (!iob)
6066 return -ENOMEM;
6067
4fa55fa9 6068 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
4666d7fb
JW		 6069 if (rc)
6070 return rc;
6071
6072 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6073 qeth_set_tso_off(card, prot);
6074 return -EOPNOTSUPP;
6075 }
6076
6077 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
b9150461
JW		 6078 IPA_CMD_ASS_ENABLE,
6079 SETASS_DATA_SIZEOF(caps), prot);
4666d7fb
JW		 6080 if (!iob) {
6081 qeth_set_tso_off(card, prot);
6082 return -ENOMEM;
6083 }
6084
6085 /* enable TSO capability */
4fa55fa9
JW		 6086 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6087 QETH_IPA_LARGE_SEND_TCP;
6088 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4666d7fb
JW		 6089 if (rc) {
6090 qeth_set_tso_off(card, prot);
6091 return rc;
6092 }
6093
6094 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6095 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6096 qeth_set_tso_off(card, prot);
6097 return -EOPNOTSUPP;
6098 }
6099
6100 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6101 tso_data.mss);
6102 return 0;
1f83b817 6103}
4d7def2a 6104
1f83b817
JW		 6105static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6106 enum qeth_prot_versions prot)
6107{
742d4d40 6108 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
4d7def2a 6109}
8f43fb00 6110
d7e6ed97
KM		 6111static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6112{
6113 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6114 int rc_ipv6;
6115
6116 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6117 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6118 QETH_PROT_IPV4);
6119 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6120 /* no/one Offload Assist available, so the rc is trivial */
6121 return rc_ipv4;
ce344356 6122
d7e6ed97
KM		 6123 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6124 QETH_PROT_IPV6);
6125
6126 if (on)
6127 /* enable: success if any Assist is active */
6128 return (rc_ipv6) ? rc_ipv4 : 0;
6129
6130 /* disable: failure if any Assist is still active */
6131 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6132}
6133
ce344356 6134/**
d025da9e
JW		 6135 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6136 * @dev: a net_device
ce344356 6137 */
d025da9e 6138void qeth_enable_hw_features(struct net_device *dev)
e830baa9
HW		 6139{
6140 struct qeth_card *card = dev->ml_priv;
d025da9e 6141 netdev_features_t features;
e830baa9 6142
d025da9e 6143 features = dev->features;
5fc692a7 6144 /* force-off any feature that might need an IPA sequence.
ce344356
JW		 6145 * netdev_update_features() will restart them.
6146 */
5fc692a7
JW		 6147 dev->features &= ~dev->hw_features;
6148 /* toggle VLAN filter, so that VIDs are re-programmed: */
6149 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6150 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6151 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6152 }
ce344356 6153 netdev_update_features(dev);
d025da9e
JW		 6154 if (features != dev->features)
6155 dev_warn(&card->gdev->dev,
6156 "Device recovery failed to restore all offload features\n");
e830baa9 6157}
d025da9e 6158EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
e830baa9 6159
8f43fb00
TR		 6160int qeth_set_features(struct net_device *dev, netdev_features_t features)
6161{
6162 struct qeth_card *card = dev->ml_priv;
6c7cd712 6163 netdev_features_t changed = dev->features ^ features;
8f43fb00
TR		 6164 int rc = 0;
6165
57a688aa
JW		 6166 QETH_CARD_TEXT(card, 2, "setfeat");
6167 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00 6168
6c7cd712 6169 if ((changed & NETIF_F_IP_CSUM)) {
a8155b00
KM		 6170 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6171 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6c7cd712
HW		 6172 if (rc)
6173 changed ^= NETIF_F_IP_CSUM;
6174 }
571f9dd8
KM		 6175 if (changed & NETIF_F_IPV6_CSUM) {
6176 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6177 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6178 if (rc)
6179 changed ^= NETIF_F_IPV6_CSUM;
6180 }
d7e6ed97
KM		 6181 if (changed & NETIF_F_RXCSUM) {
6182 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6c7cd712
HW		 6183 if (rc)
6184 changed ^= NETIF_F_RXCSUM;
6185 }
1f83b817
JW		 6186 if (changed & NETIF_F_TSO) {
6187 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6188 QETH_PROT_IPV4);
6c7cd712
HW		 6189 if (rc)
6190 changed ^= NETIF_F_TSO;
6191 }
82bf5c08
JW		 6192 if (changed & NETIF_F_TSO6) {
6193 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6194 QETH_PROT_IPV6);
6195 if (rc)
6196 changed ^= NETIF_F_TSO6;
6197 }
6c7cd712
HW		 6198
6199 /* everything changed successfully? */
6200 if ((dev->features ^ features) == changed)
6201 return 0;
6202 /* something went wrong. save changed features and return error */
6203 dev->features ^= changed;
6204 return -EIO;
8f43fb00
TR		 6205}
6206EXPORT_SYMBOL_GPL(qeth_set_features);
6207
6208netdev_features_t qeth_fix_features(struct net_device *dev,
6209 netdev_features_t features)
6210{
6211 struct qeth_card *card = dev->ml_priv;
6212
57a688aa 6213 QETH_CARD_TEXT(card, 2, "fixfeat");
8f43fb00
TR		 6214 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6215 features &= ~NETIF_F_IP_CSUM;
571f9dd8
KM		 6216 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6217 features &= ~NETIF_F_IPV6_CSUM;
d7e6ed97
KM		 6218 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6219 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
8f43fb00 6220 features &= ~NETIF_F_RXCSUM;
cf536ffe 6221 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
8f43fb00 6222 features &= ~NETIF_F_TSO;
82bf5c08
JW		 6223 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6224 features &= ~NETIF_F_TSO6;
e6e771b3 6225
57a688aa 6226 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00
TR		 6227 return features;
6228}
6229EXPORT_SYMBOL_GPL(qeth_fix_features);
4d7def2a 6230
6d69b1f1
JW		 6231netdev_features_t qeth_features_check(struct sk_buff *skb,
6232 struct net_device *dev,
6233 netdev_features_t features)
6234{
6235 /* GSO segmentation builds skbs with
6236 * a (small) linear part for the headers, and
6237 * page frags for the data.
6238 * Compared to a linear skb, the header-only part consumes an
6239 * additional buffer element. This reduces buffer utilization, and
6240 * hurts throughput. So compress small segments into one element.
6241 */
6242 if (netif_needs_gso(skb, features)) {
6243 /* match skb_segment(): */
6244 unsigned int doffset = skb->data - skb_mac_header(skb);
6245 unsigned int hsize = skb_shinfo(skb)->gso_size;
6246 unsigned int hroom = skb_headroom(skb);
6247
6248 /* linearize only if resulting skb allocations are order-0: */
6249 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6250 features &= ~NETIF_F_SG;
6251 }
6252
6253 return vlan_features_check(skb, features);
6254}
6255EXPORT_SYMBOL_GPL(qeth_features_check);
6256
b0abc4f5
JW		 6257void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6258{
6259 struct qeth_card *card = dev->ml_priv;
6260 struct qeth_qdio_out_q *queue;
6261 unsigned int i;
6262
6263 QETH_CARD_TEXT(card, 5, "getstat");
6264
6265 stats->rx_packets = card->stats.rx_packets;
6266 stats->rx_bytes = card->stats.rx_bytes;
845ef904 6267 stats->rx_errors = card->stats.rx_length_errors +
5fd3fcbb 6268 card->stats.rx_frame_errors +
845ef904
JW		 6269 card->stats.rx_fifo_errors;
6270 stats->rx_dropped = card->stats.rx_dropped_nomem +
6271 card->stats.rx_dropped_notsupp;
b0abc4f5 6272 stats->multicast = card->stats.rx_multicast;
845ef904 6273 stats->rx_length_errors = card->stats.rx_length_errors;
5fd3fcbb 6274 stats->rx_frame_errors = card->stats.rx_frame_errors;
845ef904 6275 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
b0abc4f5
JW		 6276
6277 for (i = 0; i < card->qdio.no_out_queues; i++) {
6278 queue = card->qdio.out_qs[i];
6279
6280 stats->tx_packets += queue->stats.tx_packets;
6281 stats->tx_bytes += queue->stats.tx_bytes;
6282 stats->tx_errors += queue->stats.tx_errors;
6283 stats->tx_dropped += queue->stats.tx_dropped;
b0abc4f5
JW		 6284 }
6285}
6286EXPORT_SYMBOL_GPL(qeth_get_stats64);
6287
3a18d754
JW		 6288u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6289 u8 cast_type, struct net_device *sb_dev)
6290{
6291 if (cast_type != RTN_UNICAST)
6292 return QETH_IQD_MCAST_TXQ;
6293 return QETH_IQD_MIN_UCAST_TXQ;
6294}
6295EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6296
e6e771b3 6297int qeth_open(struct net_device *dev)
e22355ea
JW		 6298{
6299 struct qeth_card *card = dev->ml_priv;
6300
6301 QETH_CARD_TEXT(card, 4, "qethopen");
e22355ea
JW		 6302
6303 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0)
6304 return -EIO;
6305
6306 card->data.state = CH_STATE_UP;
3a18d754 6307 netif_tx_start_all_queues(dev);
e22355ea
JW		 6308
6309 napi_enable(&card->napi);
6310 local_bh_disable();
6311 napi_schedule(&card->napi);
e53edf74
JW		 6312 if (IS_IQD(card)) {
6313 struct qeth_qdio_out_q *queue;
6314 unsigned int i;
6315
6316 qeth_for_each_output_queue(card, queue, i) {
6317 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
6318 QETH_NAPI_WEIGHT);
6319 napi_enable(&queue->napi);
6320 napi_schedule(&queue->napi);
6321 }
6322 }
e22355ea
JW		 6323 /* kick-start the NAPI softirq: */
6324 local_bh_enable();
6325 return 0;
6326}
e22355ea
JW		 6327EXPORT_SYMBOL_GPL(qeth_open);
6328
6329int qeth_stop(struct net_device *dev)
6330{
6331 struct qeth_card *card = dev->ml_priv;
6332
6333 QETH_CARD_TEXT(card, 4, "qethstop");
e53edf74
JW		 6334 if (IS_IQD(card)) {
6335 struct qeth_qdio_out_q *queue;
6336 unsigned int i;
6337
6338 /* Quiesce the NAPI instances: */
6339 qeth_for_each_output_queue(card, queue, i) {
6340 napi_disable(&queue->napi);
6341 del_timer_sync(&queue->timer);
6342 }
6343
6344 /* Stop .ndo_start_xmit, might still access queue->napi. */
6345 netif_tx_disable(dev);
6346
6347 /* Queues may get re-allocated, so remove the NAPIs here. */
6348 qeth_for_each_output_queue(card, queue, i)
6349 netif_napi_del(&queue->napi);
6350 } else {
6351 netif_tx_disable(dev);
6352 }
6353
0f7aedbd 6354 napi_disable(&card->napi);
e22355ea
JW		 6355 return 0;
6356}
6357EXPORT_SYMBOL_GPL(qeth_stop);
6358
4a71df50
FB		 6359static int __init qeth_core_init(void)
6360{
6361 int rc;
6362
74eacdb9 6363 pr_info("loading core functions\n");
4a71df50
FB		 6364
6365 rc = qeth_register_dbf_views();
6366 if (rc)
a936b1ef 6367 goto dbf_err;
035da16f 6368 qeth_core_root_dev = root_device_register("qeth");
9262c6c2 6369 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
4a71df50
FB		 6370 if (rc)
6371 goto register_err;
55494264
JW		 6372 qeth_core_header_cache =
6373 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6374 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6375 0, NULL);
683d718a
FB		 6376 if (!qeth_core_header_cache) {
6377 rc = -ENOMEM;
6378 goto slab_err;
6379 }
0da9581d
EL		 6380 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6381 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6382 if (!qeth_qdio_outbuf_cache) {
6383 rc = -ENOMEM;
6384 goto cqslab_err;
6385 }
afb6ac59
SO		 6386 rc = ccw_driver_register(&qeth_ccw_driver);
6387 if (rc)
6388 goto ccw_err;
afb6ac59
SO		 6389 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6390 if (rc)
6391 goto ccwgroup_err;
0da9581d 6392
683d718a 6393 return 0;
afb6ac59
SO		 6394
6395ccwgroup_err:
6396 ccw_driver_unregister(&qeth_ccw_driver);
6397ccw_err:
6398 kmem_cache_destroy(qeth_qdio_outbuf_cache);
0da9581d
EL		 6399cqslab_err:
6400 kmem_cache_destroy(qeth_core_header_cache);
683d718a 6401slab_err:
035da16f 6402 root_device_unregister(qeth_core_root_dev);
4a71df50 6403register_err:
4a71df50 6404 qeth_unregister_dbf_views();
a936b1ef 6405dbf_err:
74eacdb9 6406 pr_err("Initializing the qeth device driver failed\n");
4a71df50
FB		 6407 return rc;
6408}
6409
6410static void __exit qeth_core_exit(void)
6411{
819dc537 6412 qeth_clear_dbf_list();
4a71df50
FB		 6413 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6414 ccw_driver_unregister(&qeth_ccw_driver);
0da9581d 6415 kmem_cache_destroy(qeth_qdio_outbuf_cache);
683d718a 6416 kmem_cache_destroy(qeth_core_header_cache);
afb6ac59 6417 root_device_unregister(qeth_core_root_dev);
4a71df50 6418 qeth_unregister_dbf_views();
74eacdb9 6419 pr_info("core functions removed\n");
4a71df50
FB		 6420}
6421
6422module_init(qeth_core_init);
6423module_exit(qeth_core_exit);
6424MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6425MODULE_DESCRIPTION("qeth core functions");
6426MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)