1 /* 2 * Copyright IBM Corp. 2007, 2009 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 4 * Frank Pavlic <fpavlic@de.ibm.com>, 5 * Thomas Spatzier <tspat@de.ibm.com>, 6 * Frank Blaschka <frank.blaschka@de.ibm.com> 7 */ 8 9 #define KMSG_COMPONENT "qeth" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/string.h> 15 #include <linux/errno.h> 16 #include <linux/kernel.h> 17 #include <linux/ip.h> 18 #include <linux/tcp.h> 19 #include <linux/mii.h> 20 #include <linux/kthread.h> 21 #include <linux/slab.h> 22 #include <net/iucv/af_iucv.h> 23 #include <net/dsfield.h> 24 25 #include <asm/ebcdic.h> 26 #include <asm/chpid.h> 27 #include <asm/io.h> 28 #include <asm/sysinfo.h> 29 #include <asm/compat.h> 30 31 #include "qeth_core.h" 32 33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 34 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 35 /* N P A M L V H */ 36 [QETH_DBF_SETUP] = {"qeth_setup", 37 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 38 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 39 &debug_sprintf_view, NULL}, 40 [QETH_DBF_CTRL] = {"qeth_control", 41 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 42 }; 43 EXPORT_SYMBOL_GPL(qeth_dbf); 44 45 struct qeth_card_list_struct qeth_core_card_list; 46 EXPORT_SYMBOL_GPL(qeth_core_card_list); 47 struct kmem_cache *qeth_core_header_cache; 48 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 49 static struct kmem_cache *qeth_qdio_outbuf_cache; 50 51 static struct device *qeth_core_root_dev; 52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY; 53 static struct lock_class_key qdio_out_skb_queue_key; 54 static struct mutex qeth_mod_mutex; 55 56 static void qeth_send_control_data_cb(struct qeth_channel *, 57 struct qeth_cmd_buffer *); 58 static int qeth_issue_next_read(struct qeth_card *); 59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 61 static void qeth_free_buffer_pool(struct qeth_card *); 62 static int qeth_qdio_establish(struct qeth_card *); 63 static void qeth_free_qdio_buffers(struct qeth_card *); 64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 65 struct qeth_qdio_out_buffer *buf, 66 enum iucv_tx_notify notification); 67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 69 struct qeth_qdio_out_buffer *buf, 70 enum qeth_qdio_buffer_states newbufstate); 71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 72 73 struct workqueue_struct *qeth_wq; 74 EXPORT_SYMBOL_GPL(qeth_wq); 75 76 int qeth_card_hw_is_reachable(struct qeth_card *card) 77 { 78 return (card->state == CARD_STATE_SOFTSETUP) || 79 (card->state == CARD_STATE_UP); 80 } 81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 82 83 static void qeth_close_dev_handler(struct work_struct *work) 84 { 85 struct qeth_card *card; 86 87 card = container_of(work, struct qeth_card, close_dev_work); 88 QETH_CARD_TEXT(card, 2, "cldevhdl"); 89 rtnl_lock(); 90 dev_close(card->dev); 91 rtnl_unlock(); 92 ccwgroup_set_offline(card->gdev); 93 } 94 95 void qeth_close_dev(struct qeth_card *card) 96 { 97 QETH_CARD_TEXT(card, 2, "cldevsubm"); 98 queue_work(qeth_wq, &card->close_dev_work); 99 } 100 EXPORT_SYMBOL_GPL(qeth_close_dev); 101 102 static inline const char *qeth_get_cardname(struct qeth_card *card) 103 { 104 if (card->info.guestlan) { 105 switch (card->info.type) { 106 case QETH_CARD_TYPE_OSD: 107 return " Virtual NIC QDIO"; 108 case QETH_CARD_TYPE_IQD: 109 return " Virtual NIC Hiper"; 110 case QETH_CARD_TYPE_OSM: 111 return " Virtual NIC QDIO - OSM"; 112 case QETH_CARD_TYPE_OSX: 113 return " Virtual NIC QDIO - OSX"; 114 default: 115 return " unknown"; 116 } 117 } else { 118 switch (card->info.type) { 119 case QETH_CARD_TYPE_OSD: 120 return " OSD Express"; 121 case QETH_CARD_TYPE_IQD: 122 return " HiperSockets"; 123 case QETH_CARD_TYPE_OSN: 124 return " OSN QDIO"; 125 case QETH_CARD_TYPE_OSM: 126 return " OSM QDIO"; 127 case QETH_CARD_TYPE_OSX: 128 return " OSX QDIO"; 129 default: 130 return " unknown"; 131 } 132 } 133 return " n/a"; 134 } 135 136 /* max length to be returned: 14 */ 137 const char *qeth_get_cardname_short(struct qeth_card *card) 138 { 139 if (card->info.guestlan) { 140 switch (card->info.type) { 141 case QETH_CARD_TYPE_OSD: 142 return "Virt.NIC QDIO"; 143 case QETH_CARD_TYPE_IQD: 144 return "Virt.NIC Hiper"; 145 case QETH_CARD_TYPE_OSM: 146 return "Virt.NIC OSM"; 147 case QETH_CARD_TYPE_OSX: 148 return "Virt.NIC OSX"; 149 default: 150 return "unknown"; 151 } 152 } else { 153 switch (card->info.type) { 154 case QETH_CARD_TYPE_OSD: 155 switch (card->info.link_type) { 156 case QETH_LINK_TYPE_FAST_ETH: 157 return "OSD_100"; 158 case QETH_LINK_TYPE_HSTR: 159 return "HSTR"; 160 case QETH_LINK_TYPE_GBIT_ETH: 161 return "OSD_1000"; 162 case QETH_LINK_TYPE_10GBIT_ETH: 163 return "OSD_10GIG"; 164 case QETH_LINK_TYPE_LANE_ETH100: 165 return "OSD_FE_LANE"; 166 case QETH_LINK_TYPE_LANE_TR: 167 return "OSD_TR_LANE"; 168 case QETH_LINK_TYPE_LANE_ETH1000: 169 return "OSD_GbE_LANE"; 170 case QETH_LINK_TYPE_LANE: 171 return "OSD_ATM_LANE"; 172 default: 173 return "OSD_Express"; 174 } 175 case QETH_CARD_TYPE_IQD: 176 return "HiperSockets"; 177 case QETH_CARD_TYPE_OSN: 178 return "OSN"; 179 case QETH_CARD_TYPE_OSM: 180 return "OSM_1000"; 181 case QETH_CARD_TYPE_OSX: 182 return "OSX_10GIG"; 183 default: 184 return "unknown"; 185 } 186 } 187 return "n/a"; 188 } 189 190 void qeth_set_recovery_task(struct qeth_card *card) 191 { 192 card->recovery_task = current; 193 } 194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 195 196 void qeth_clear_recovery_task(struct qeth_card *card) 197 { 198 card->recovery_task = NULL; 199 } 200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 201 202 static bool qeth_is_recovery_task(const struct qeth_card *card) 203 { 204 return card->recovery_task == current; 205 } 206 207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 208 int clear_start_mask) 209 { 210 unsigned long flags; 211 212 spin_lock_irqsave(&card->thread_mask_lock, flags); 213 card->thread_allowed_mask = threads; 214 if (clear_start_mask) 215 card->thread_start_mask &= threads; 216 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 217 wake_up(&card->wait_q); 218 } 219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 220 221 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 222 { 223 unsigned long flags; 224 int rc = 0; 225 226 spin_lock_irqsave(&card->thread_mask_lock, flags); 227 rc = (card->thread_running_mask & threads); 228 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 229 return rc; 230 } 231 EXPORT_SYMBOL_GPL(qeth_threads_running); 232 233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 234 { 235 if (qeth_is_recovery_task(card)) 236 return 0; 237 return wait_event_interruptible(card->wait_q, 238 qeth_threads_running(card, threads) == 0); 239 } 240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 241 242 void qeth_clear_working_pool_list(struct qeth_card *card) 243 { 244 struct qeth_buffer_pool_entry *pool_entry, *tmp; 245 246 QETH_CARD_TEXT(card, 5, "clwrklst"); 247 list_for_each_entry_safe(pool_entry, tmp, 248 &card->qdio.in_buf_pool.entry_list, list){ 249 list_del(&pool_entry->list); 250 } 251 } 252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 253 254 static int qeth_alloc_buffer_pool(struct qeth_card *card) 255 { 256 struct qeth_buffer_pool_entry *pool_entry; 257 void *ptr; 258 int i, j; 259 260 QETH_CARD_TEXT(card, 5, "alocpool"); 261 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 262 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 263 if (!pool_entry) { 264 qeth_free_buffer_pool(card); 265 return -ENOMEM; 266 } 267 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 268 ptr = (void *) __get_free_page(GFP_KERNEL); 269 if (!ptr) { 270 while (j > 0) 271 free_page((unsigned long) 272 pool_entry->elements[--j]); 273 kfree(pool_entry); 274 qeth_free_buffer_pool(card); 275 return -ENOMEM; 276 } 277 pool_entry->elements[j] = ptr; 278 } 279 list_add(&pool_entry->init_list, 280 &card->qdio.init_pool.entry_list); 281 } 282 return 0; 283 } 284 285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 286 { 287 QETH_CARD_TEXT(card, 2, "realcbp"); 288 289 if ((card->state != CARD_STATE_DOWN) && 290 (card->state != CARD_STATE_RECOVER)) 291 return -EPERM; 292 293 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 294 qeth_clear_working_pool_list(card); 295 qeth_free_buffer_pool(card); 296 card->qdio.in_buf_pool.buf_count = bufcnt; 297 card->qdio.init_pool.buf_count = bufcnt; 298 return qeth_alloc_buffer_pool(card); 299 } 300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 301 302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 303 { 304 if (!q) 305 return; 306 307 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 308 kfree(q); 309 } 310 311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 312 { 313 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 314 int i; 315 316 if (!q) 317 return NULL; 318 319 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 320 kfree(q); 321 return NULL; 322 } 323 324 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 325 q->bufs[i].buffer = q->qdio_bufs[i]; 326 327 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 328 return q; 329 } 330 331 static inline int qeth_cq_init(struct qeth_card *card) 332 { 333 int rc; 334 335 if (card->options.cq == QETH_CQ_ENABLED) { 336 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 337 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 338 QDIO_MAX_BUFFERS_PER_Q); 339 card->qdio.c_q->next_buf_to_init = 127; 340 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 341 card->qdio.no_in_queues - 1, 0, 342 127); 343 if (rc) { 344 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 345 goto out; 346 } 347 } 348 rc = 0; 349 out: 350 return rc; 351 } 352 353 static inline int qeth_alloc_cq(struct qeth_card *card) 354 { 355 int rc; 356 357 if (card->options.cq == QETH_CQ_ENABLED) { 358 int i; 359 struct qdio_outbuf_state *outbuf_states; 360 361 QETH_DBF_TEXT(SETUP, 2, "cqon"); 362 card->qdio.c_q = qeth_alloc_qdio_queue(); 363 if (!card->qdio.c_q) { 364 rc = -1; 365 goto kmsg_out; 366 } 367 card->qdio.no_in_queues = 2; 368 card->qdio.out_bufstates = 369 kzalloc(card->qdio.no_out_queues * 370 QDIO_MAX_BUFFERS_PER_Q * 371 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 372 outbuf_states = card->qdio.out_bufstates; 373 if (outbuf_states == NULL) { 374 rc = -1; 375 goto free_cq_out; 376 } 377 for (i = 0; i < card->qdio.no_out_queues; ++i) { 378 card->qdio.out_qs[i]->bufstates = outbuf_states; 379 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 380 } 381 } else { 382 QETH_DBF_TEXT(SETUP, 2, "nocq"); 383 card->qdio.c_q = NULL; 384 card->qdio.no_in_queues = 1; 385 } 386 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 387 rc = 0; 388 out: 389 return rc; 390 free_cq_out: 391 qeth_free_qdio_queue(card->qdio.c_q); 392 card->qdio.c_q = NULL; 393 kmsg_out: 394 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 395 goto out; 396 } 397 398 static inline void qeth_free_cq(struct qeth_card *card) 399 { 400 if (card->qdio.c_q) { 401 --card->qdio.no_in_queues; 402 qeth_free_qdio_queue(card->qdio.c_q); 403 card->qdio.c_q = NULL; 404 } 405 kfree(card->qdio.out_bufstates); 406 card->qdio.out_bufstates = NULL; 407 } 408 409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 410 int delayed) { 411 enum iucv_tx_notify n; 412 413 switch (sbalf15) { 414 case 0: 415 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 416 break; 417 case 4: 418 case 16: 419 case 17: 420 case 18: 421 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 422 TX_NOTIFY_UNREACHABLE; 423 break; 424 default: 425 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 426 TX_NOTIFY_GENERALERROR; 427 break; 428 } 429 430 return n; 431 } 432 433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, 434 int bidx, int forced_cleanup) 435 { 436 if (q->card->options.cq != QETH_CQ_ENABLED) 437 return; 438 439 if (q->bufs[bidx]->next_pending != NULL) { 440 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 441 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 442 443 while (c) { 444 if (forced_cleanup || 445 atomic_read(&c->state) == 446 QETH_QDIO_BUF_HANDLED_DELAYED) { 447 struct qeth_qdio_out_buffer *f = c; 448 QETH_CARD_TEXT(f->q->card, 5, "fp"); 449 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 450 /* release here to avoid interleaving between 451 outbound tasklet and inbound tasklet 452 regarding notifications and lifecycle */ 453 qeth_release_skbs(c); 454 455 c = f->next_pending; 456 WARN_ON_ONCE(head->next_pending != f); 457 head->next_pending = c; 458 kmem_cache_free(qeth_qdio_outbuf_cache, f); 459 } else { 460 head = c; 461 c = c->next_pending; 462 } 463 464 } 465 } 466 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 467 QETH_QDIO_BUF_HANDLED_DELAYED)) { 468 /* for recovery situations */ 469 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 470 qeth_init_qdio_out_buf(q, bidx); 471 QETH_CARD_TEXT(q->card, 2, "clprecov"); 472 } 473 } 474 475 476 static inline void qeth_qdio_handle_aob(struct qeth_card *card, 477 unsigned long phys_aob_addr) { 478 struct qaob *aob; 479 struct qeth_qdio_out_buffer *buffer; 480 enum iucv_tx_notify notification; 481 482 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 483 QETH_CARD_TEXT(card, 5, "haob"); 484 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 485 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 486 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 487 488 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 489 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 490 notification = TX_NOTIFY_OK; 491 } else { 492 WARN_ON_ONCE(atomic_read(&buffer->state) != 493 QETH_QDIO_BUF_PENDING); 494 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 495 notification = TX_NOTIFY_DELAYED_OK; 496 } 497 498 if (aob->aorc != 0) { 499 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 500 notification = qeth_compute_cq_notification(aob->aorc, 1); 501 } 502 qeth_notify_skbs(buffer->q, buffer, notification); 503 504 buffer->aob = NULL; 505 qeth_clear_output_buffer(buffer->q, buffer, 506 QETH_QDIO_BUF_HANDLED_DELAYED); 507 508 /* from here on: do not touch buffer anymore */ 509 qdio_release_aob(aob); 510 } 511 512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 513 { 514 return card->options.cq == QETH_CQ_ENABLED && 515 card->qdio.c_q != NULL && 516 queue != 0 && 517 queue == card->qdio.no_in_queues - 1; 518 } 519 520 521 static int qeth_issue_next_read(struct qeth_card *card) 522 { 523 int rc; 524 struct qeth_cmd_buffer *iob; 525 526 QETH_CARD_TEXT(card, 5, "issnxrd"); 527 if (card->read.state != CH_STATE_UP) 528 return -EIO; 529 iob = qeth_get_buffer(&card->read); 530 if (!iob) { 531 dev_warn(&card->gdev->dev, "The qeth device driver " 532 "failed to recover an error on the device\n"); 533 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 534 "available\n", dev_name(&card->gdev->dev)); 535 return -ENOMEM; 536 } 537 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 538 QETH_CARD_TEXT(card, 6, "noirqpnd"); 539 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 540 (addr_t) iob, 0, 0); 541 if (rc) { 542 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 543 "rc=%i\n", dev_name(&card->gdev->dev), rc); 544 atomic_set(&card->read.irq_pending, 0); 545 card->read_or_write_problem = 1; 546 qeth_schedule_recovery(card); 547 wake_up(&card->wait_q); 548 } 549 return rc; 550 } 551 552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 553 { 554 struct qeth_reply *reply; 555 556 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 557 if (reply) { 558 atomic_set(&reply->refcnt, 1); 559 atomic_set(&reply->received, 0); 560 reply->card = card; 561 } 562 return reply; 563 } 564 565 static void qeth_get_reply(struct qeth_reply *reply) 566 { 567 WARN_ON(atomic_read(&reply->refcnt) <= 0); 568 atomic_inc(&reply->refcnt); 569 } 570 571 static void qeth_put_reply(struct qeth_reply *reply) 572 { 573 WARN_ON(atomic_read(&reply->refcnt) <= 0); 574 if (atomic_dec_and_test(&reply->refcnt)) 575 kfree(reply); 576 } 577 578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 579 struct qeth_card *card) 580 { 581 char *ipa_name; 582 int com = cmd->hdr.command; 583 ipa_name = qeth_get_ipa_cmd_name(com); 584 if (rc) 585 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 586 "x%X \"%s\"\n", 587 ipa_name, com, dev_name(&card->gdev->dev), 588 QETH_CARD_IFNAME(card), rc, 589 qeth_get_ipa_msg(rc)); 590 else 591 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 592 ipa_name, com, dev_name(&card->gdev->dev), 593 QETH_CARD_IFNAME(card)); 594 } 595 596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 597 struct qeth_cmd_buffer *iob) 598 { 599 struct qeth_ipa_cmd *cmd = NULL; 600 601 QETH_CARD_TEXT(card, 5, "chkipad"); 602 if (IS_IPA(iob->data)) { 603 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 604 if (IS_IPA_REPLY(cmd)) { 605 if (cmd->hdr.command != IPA_CMD_SETCCID && 606 cmd->hdr.command != IPA_CMD_DELCCID && 607 cmd->hdr.command != IPA_CMD_MODCCID && 608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 609 qeth_issue_ipa_msg(cmd, 610 cmd->hdr.return_code, card); 611 return cmd; 612 } else { 613 switch (cmd->hdr.command) { 614 case IPA_CMD_STOPLAN: 615 if (cmd->hdr.return_code == 616 IPA_RC_VEPA_TO_VEB_TRANSITION) { 617 dev_err(&card->gdev->dev, 618 "Interface %s is down because the " 619 "adjacent port is no longer in " 620 "reflective relay mode\n", 621 QETH_CARD_IFNAME(card)); 622 qeth_close_dev(card); 623 } else { 624 dev_warn(&card->gdev->dev, 625 "The link for interface %s on CHPID" 626 " 0x%X failed\n", 627 QETH_CARD_IFNAME(card), 628 card->info.chpid); 629 qeth_issue_ipa_msg(cmd, 630 cmd->hdr.return_code, card); 631 } 632 card->lan_online = 0; 633 if (card->dev && netif_carrier_ok(card->dev)) 634 netif_carrier_off(card->dev); 635 return NULL; 636 case IPA_CMD_STARTLAN: 637 dev_info(&card->gdev->dev, 638 "The link for %s on CHPID 0x%X has" 639 " been restored\n", 640 QETH_CARD_IFNAME(card), 641 card->info.chpid); 642 netif_carrier_on(card->dev); 643 card->lan_online = 1; 644 if (card->info.hwtrap) 645 card->info.hwtrap = 2; 646 qeth_schedule_recovery(card); 647 return NULL; 648 case IPA_CMD_SETBRIDGEPORT_IQD: 649 case IPA_CMD_SETBRIDGEPORT_OSA: 650 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 651 if (card->discipline->control_event_handler 652 (card, cmd)) 653 return cmd; 654 else 655 return NULL; 656 case IPA_CMD_MODCCID: 657 return cmd; 658 case IPA_CMD_REGISTER_LOCAL_ADDR: 659 QETH_CARD_TEXT(card, 3, "irla"); 660 break; 661 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 662 QETH_CARD_TEXT(card, 3, "urla"); 663 break; 664 default: 665 QETH_DBF_MESSAGE(2, "Received data is IPA " 666 "but not a reply!\n"); 667 break; 668 } 669 } 670 } 671 return cmd; 672 } 673 674 void qeth_clear_ipacmd_list(struct qeth_card *card) 675 { 676 struct qeth_reply *reply, *r; 677 unsigned long flags; 678 679 QETH_CARD_TEXT(card, 4, "clipalst"); 680 681 spin_lock_irqsave(&card->lock, flags); 682 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 683 qeth_get_reply(reply); 684 reply->rc = -EIO; 685 atomic_inc(&reply->received); 686 list_del_init(&reply->list); 687 wake_up(&reply->wait_q); 688 qeth_put_reply(reply); 689 } 690 spin_unlock_irqrestore(&card->lock, flags); 691 atomic_set(&card->write.irq_pending, 0); 692 } 693 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 694 695 static int qeth_check_idx_response(struct qeth_card *card, 696 unsigned char *buffer) 697 { 698 if (!buffer) 699 return 0; 700 701 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 702 if ((buffer[2] & 0xc0) == 0xc0) { 703 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 704 "with cause code 0x%02x%s\n", 705 buffer[4], 706 ((buffer[4] == 0x22) ? 707 " -- try another portname" : "")); 708 QETH_CARD_TEXT(card, 2, "ckidxres"); 709 QETH_CARD_TEXT(card, 2, " idxterm"); 710 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 711 if (buffer[4] == 0xf6) { 712 dev_err(&card->gdev->dev, 713 "The qeth device is not configured " 714 "for the OSI layer required by z/VM\n"); 715 return -EPERM; 716 } 717 return -EIO; 718 } 719 return 0; 720 } 721 722 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 723 { 724 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 725 dev_get_drvdata(&cdev->dev))->dev); 726 return card; 727 } 728 729 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 730 __u32 len) 731 { 732 struct qeth_card *card; 733 734 card = CARD_FROM_CDEV(channel->ccwdev); 735 QETH_CARD_TEXT(card, 4, "setupccw"); 736 if (channel == &card->read) 737 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 738 else 739 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 740 channel->ccw.count = len; 741 channel->ccw.cda = (__u32) __pa(iob); 742 } 743 744 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 745 { 746 __u8 index; 747 748 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 749 index = channel->io_buf_no; 750 do { 751 if (channel->iob[index].state == BUF_STATE_FREE) { 752 channel->iob[index].state = BUF_STATE_LOCKED; 753 channel->io_buf_no = (channel->io_buf_no + 1) % 754 QETH_CMD_BUFFER_NO; 755 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 756 return channel->iob + index; 757 } 758 index = (index + 1) % QETH_CMD_BUFFER_NO; 759 } while (index != channel->io_buf_no); 760 761 return NULL; 762 } 763 764 void qeth_release_buffer(struct qeth_channel *channel, 765 struct qeth_cmd_buffer *iob) 766 { 767 unsigned long flags; 768 769 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 770 spin_lock_irqsave(&channel->iob_lock, flags); 771 memset(iob->data, 0, QETH_BUFSIZE); 772 iob->state = BUF_STATE_FREE; 773 iob->callback = qeth_send_control_data_cb; 774 iob->rc = 0; 775 spin_unlock_irqrestore(&channel->iob_lock, flags); 776 wake_up(&channel->wait_q); 777 } 778 EXPORT_SYMBOL_GPL(qeth_release_buffer); 779 780 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 781 { 782 struct qeth_cmd_buffer *buffer = NULL; 783 unsigned long flags; 784 785 spin_lock_irqsave(&channel->iob_lock, flags); 786 buffer = __qeth_get_buffer(channel); 787 spin_unlock_irqrestore(&channel->iob_lock, flags); 788 return buffer; 789 } 790 791 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 792 { 793 struct qeth_cmd_buffer *buffer; 794 wait_event(channel->wait_q, 795 ((buffer = qeth_get_buffer(channel)) != NULL)); 796 return buffer; 797 } 798 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 799 800 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 801 { 802 int cnt; 803 804 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 805 qeth_release_buffer(channel, &channel->iob[cnt]); 806 channel->buf_no = 0; 807 channel->io_buf_no = 0; 808 } 809 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 810 811 static void qeth_send_control_data_cb(struct qeth_channel *channel, 812 struct qeth_cmd_buffer *iob) 813 { 814 struct qeth_card *card; 815 struct qeth_reply *reply, *r; 816 struct qeth_ipa_cmd *cmd; 817 unsigned long flags; 818 int keep_reply; 819 int rc = 0; 820 821 card = CARD_FROM_CDEV(channel->ccwdev); 822 QETH_CARD_TEXT(card, 4, "sndctlcb"); 823 rc = qeth_check_idx_response(card, iob->data); 824 switch (rc) { 825 case 0: 826 break; 827 case -EIO: 828 qeth_clear_ipacmd_list(card); 829 qeth_schedule_recovery(card); 830 /* fall through */ 831 default: 832 goto out; 833 } 834 835 cmd = qeth_check_ipa_data(card, iob); 836 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 837 goto out; 838 /*in case of OSN : check if cmd is set */ 839 if (card->info.type == QETH_CARD_TYPE_OSN && 840 cmd && 841 cmd->hdr.command != IPA_CMD_STARTLAN && 842 card->osn_info.assist_cb != NULL) { 843 card->osn_info.assist_cb(card->dev, cmd); 844 goto out; 845 } 846 847 spin_lock_irqsave(&card->lock, flags); 848 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 849 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 850 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 851 qeth_get_reply(reply); 852 list_del_init(&reply->list); 853 spin_unlock_irqrestore(&card->lock, flags); 854 keep_reply = 0; 855 if (reply->callback != NULL) { 856 if (cmd) { 857 reply->offset = (__u16)((char *)cmd - 858 (char *)iob->data); 859 keep_reply = reply->callback(card, 860 reply, 861 (unsigned long)cmd); 862 } else 863 keep_reply = reply->callback(card, 864 reply, 865 (unsigned long)iob); 866 } 867 if (cmd) 868 reply->rc = (u16) cmd->hdr.return_code; 869 else if (iob->rc) 870 reply->rc = iob->rc; 871 if (keep_reply) { 872 spin_lock_irqsave(&card->lock, flags); 873 list_add_tail(&reply->list, 874 &card->cmd_waiter_list); 875 spin_unlock_irqrestore(&card->lock, flags); 876 } else { 877 atomic_inc(&reply->received); 878 wake_up(&reply->wait_q); 879 } 880 qeth_put_reply(reply); 881 goto out; 882 } 883 } 884 spin_unlock_irqrestore(&card->lock, flags); 885 out: 886 memcpy(&card->seqno.pdu_hdr_ack, 887 QETH_PDU_HEADER_SEQ_NO(iob->data), 888 QETH_SEQ_NO_LENGTH); 889 qeth_release_buffer(channel, iob); 890 } 891 892 static int qeth_setup_channel(struct qeth_channel *channel) 893 { 894 int cnt; 895 896 QETH_DBF_TEXT(SETUP, 2, "setupch"); 897 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 898 channel->iob[cnt].data = 899 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 900 if (channel->iob[cnt].data == NULL) 901 break; 902 channel->iob[cnt].state = BUF_STATE_FREE; 903 channel->iob[cnt].channel = channel; 904 channel->iob[cnt].callback = qeth_send_control_data_cb; 905 channel->iob[cnt].rc = 0; 906 } 907 if (cnt < QETH_CMD_BUFFER_NO) { 908 while (cnt-- > 0) 909 kfree(channel->iob[cnt].data); 910 return -ENOMEM; 911 } 912 channel->buf_no = 0; 913 channel->io_buf_no = 0; 914 atomic_set(&channel->irq_pending, 0); 915 spin_lock_init(&channel->iob_lock); 916 917 init_waitqueue_head(&channel->wait_q); 918 return 0; 919 } 920 921 static int qeth_set_thread_start_bit(struct qeth_card *card, 922 unsigned long thread) 923 { 924 unsigned long flags; 925 926 spin_lock_irqsave(&card->thread_mask_lock, flags); 927 if (!(card->thread_allowed_mask & thread) || 928 (card->thread_start_mask & thread)) { 929 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 930 return -EPERM; 931 } 932 card->thread_start_mask |= thread; 933 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 934 return 0; 935 } 936 937 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 938 { 939 unsigned long flags; 940 941 spin_lock_irqsave(&card->thread_mask_lock, flags); 942 card->thread_start_mask &= ~thread; 943 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 944 wake_up(&card->wait_q); 945 } 946 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 947 948 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 949 { 950 unsigned long flags; 951 952 spin_lock_irqsave(&card->thread_mask_lock, flags); 953 card->thread_running_mask &= ~thread; 954 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 955 wake_up(&card->wait_q); 956 } 957 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 958 959 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 960 { 961 unsigned long flags; 962 int rc = 0; 963 964 spin_lock_irqsave(&card->thread_mask_lock, flags); 965 if (card->thread_start_mask & thread) { 966 if ((card->thread_allowed_mask & thread) && 967 !(card->thread_running_mask & thread)) { 968 rc = 1; 969 card->thread_start_mask &= ~thread; 970 card->thread_running_mask |= thread; 971 } else 972 rc = -EPERM; 973 } 974 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 975 return rc; 976 } 977 978 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 979 { 980 int rc = 0; 981 982 wait_event(card->wait_q, 983 (rc = __qeth_do_run_thread(card, thread)) >= 0); 984 return rc; 985 } 986 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 987 988 void qeth_schedule_recovery(struct qeth_card *card) 989 { 990 QETH_CARD_TEXT(card, 2, "startrec"); 991 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 992 schedule_work(&card->kernel_thread_starter); 993 } 994 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 995 996 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 997 { 998 int dstat, cstat; 999 char *sense; 1000 struct qeth_card *card; 1001 1002 sense = (char *) irb->ecw; 1003 cstat = irb->scsw.cmd.cstat; 1004 dstat = irb->scsw.cmd.dstat; 1005 card = CARD_FROM_CDEV(cdev); 1006 1007 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1008 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1009 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1010 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1011 dev_warn(&cdev->dev, "The qeth device driver " 1012 "failed to recover an error on the device\n"); 1013 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1014 dev_name(&cdev->dev), dstat, cstat); 1015 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1016 16, 1, irb, 64, 1); 1017 return 1; 1018 } 1019 1020 if (dstat & DEV_STAT_UNIT_CHECK) { 1021 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1022 SENSE_RESETTING_EVENT_FLAG) { 1023 QETH_CARD_TEXT(card, 2, "REVIND"); 1024 return 1; 1025 } 1026 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1027 SENSE_COMMAND_REJECT_FLAG) { 1028 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1029 return 1; 1030 } 1031 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1032 QETH_CARD_TEXT(card, 2, "AFFE"); 1033 return 1; 1034 } 1035 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1036 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1037 return 0; 1038 } 1039 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1040 return 1; 1041 } 1042 return 0; 1043 } 1044 1045 static long __qeth_check_irb_error(struct ccw_device *cdev, 1046 unsigned long intparm, struct irb *irb) 1047 { 1048 struct qeth_card *card; 1049 1050 card = CARD_FROM_CDEV(cdev); 1051 1052 if (!card || !IS_ERR(irb)) 1053 return 0; 1054 1055 switch (PTR_ERR(irb)) { 1056 case -EIO: 1057 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1058 dev_name(&cdev->dev)); 1059 QETH_CARD_TEXT(card, 2, "ckirberr"); 1060 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1061 break; 1062 case -ETIMEDOUT: 1063 dev_warn(&cdev->dev, "A hardware operation timed out" 1064 " on the device\n"); 1065 QETH_CARD_TEXT(card, 2, "ckirberr"); 1066 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1067 if (intparm == QETH_RCD_PARM) { 1068 if (card->data.ccwdev == cdev) { 1069 card->data.state = CH_STATE_DOWN; 1070 wake_up(&card->wait_q); 1071 } 1072 } 1073 break; 1074 default: 1075 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1076 dev_name(&cdev->dev), PTR_ERR(irb)); 1077 QETH_CARD_TEXT(card, 2, "ckirberr"); 1078 QETH_CARD_TEXT(card, 2, " rc???"); 1079 } 1080 return PTR_ERR(irb); 1081 } 1082 1083 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1084 struct irb *irb) 1085 { 1086 int rc; 1087 int cstat, dstat; 1088 struct qeth_cmd_buffer *buffer; 1089 struct qeth_channel *channel; 1090 struct qeth_card *card; 1091 struct qeth_cmd_buffer *iob; 1092 __u8 index; 1093 1094 if (__qeth_check_irb_error(cdev, intparm, irb)) 1095 return; 1096 cstat = irb->scsw.cmd.cstat; 1097 dstat = irb->scsw.cmd.dstat; 1098 1099 card = CARD_FROM_CDEV(cdev); 1100 if (!card) 1101 return; 1102 1103 QETH_CARD_TEXT(card, 5, "irq"); 1104 1105 if (card->read.ccwdev == cdev) { 1106 channel = &card->read; 1107 QETH_CARD_TEXT(card, 5, "read"); 1108 } else if (card->write.ccwdev == cdev) { 1109 channel = &card->write; 1110 QETH_CARD_TEXT(card, 5, "write"); 1111 } else { 1112 channel = &card->data; 1113 QETH_CARD_TEXT(card, 5, "data"); 1114 } 1115 atomic_set(&channel->irq_pending, 0); 1116 1117 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1118 channel->state = CH_STATE_STOPPED; 1119 1120 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1121 channel->state = CH_STATE_HALTED; 1122 1123 /*let's wake up immediately on data channel*/ 1124 if ((channel == &card->data) && (intparm != 0) && 1125 (intparm != QETH_RCD_PARM)) 1126 goto out; 1127 1128 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1129 QETH_CARD_TEXT(card, 6, "clrchpar"); 1130 /* we don't have to handle this further */ 1131 intparm = 0; 1132 } 1133 if (intparm == QETH_HALT_CHANNEL_PARM) { 1134 QETH_CARD_TEXT(card, 6, "hltchpar"); 1135 /* we don't have to handle this further */ 1136 intparm = 0; 1137 } 1138 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1139 (dstat & DEV_STAT_UNIT_CHECK) || 1140 (cstat)) { 1141 if (irb->esw.esw0.erw.cons) { 1142 dev_warn(&channel->ccwdev->dev, 1143 "The qeth device driver failed to recover " 1144 "an error on the device\n"); 1145 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1146 "0x%X dstat 0x%X\n", 1147 dev_name(&channel->ccwdev->dev), cstat, dstat); 1148 print_hex_dump(KERN_WARNING, "qeth: irb ", 1149 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1150 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1151 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1152 } 1153 if (intparm == QETH_RCD_PARM) { 1154 channel->state = CH_STATE_DOWN; 1155 goto out; 1156 } 1157 rc = qeth_get_problem(cdev, irb); 1158 if (rc) { 1159 qeth_clear_ipacmd_list(card); 1160 qeth_schedule_recovery(card); 1161 goto out; 1162 } 1163 } 1164 1165 if (intparm == QETH_RCD_PARM) { 1166 channel->state = CH_STATE_RCD_DONE; 1167 goto out; 1168 } 1169 if (intparm) { 1170 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1171 buffer->state = BUF_STATE_PROCESSED; 1172 } 1173 if (channel == &card->data) 1174 return; 1175 if (channel == &card->read && 1176 channel->state == CH_STATE_UP) 1177 qeth_issue_next_read(card); 1178 1179 iob = channel->iob; 1180 index = channel->buf_no; 1181 while (iob[index].state == BUF_STATE_PROCESSED) { 1182 if (iob[index].callback != NULL) 1183 iob[index].callback(channel, iob + index); 1184 1185 index = (index + 1) % QETH_CMD_BUFFER_NO; 1186 } 1187 channel->buf_no = index; 1188 out: 1189 wake_up(&card->wait_q); 1190 return; 1191 } 1192 1193 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1194 struct qeth_qdio_out_buffer *buf, 1195 enum iucv_tx_notify notification) 1196 { 1197 struct sk_buff *skb; 1198 1199 if (skb_queue_empty(&buf->skb_list)) 1200 goto out; 1201 skb = skb_peek(&buf->skb_list); 1202 while (skb) { 1203 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1204 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1205 if (skb->protocol == ETH_P_AF_IUCV) { 1206 if (skb->sk) { 1207 struct iucv_sock *iucv = iucv_sk(skb->sk); 1208 iucv->sk_txnotify(skb, notification); 1209 } 1210 } 1211 if (skb_queue_is_last(&buf->skb_list, skb)) 1212 skb = NULL; 1213 else 1214 skb = skb_queue_next(&buf->skb_list, skb); 1215 } 1216 out: 1217 return; 1218 } 1219 1220 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1221 { 1222 struct sk_buff *skb; 1223 struct iucv_sock *iucv; 1224 int notify_general_error = 0; 1225 1226 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1227 notify_general_error = 1; 1228 1229 /* release may never happen from within CQ tasklet scope */ 1230 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1231 1232 skb = skb_dequeue(&buf->skb_list); 1233 while (skb) { 1234 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1235 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1236 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) { 1237 if (skb->sk) { 1238 iucv = iucv_sk(skb->sk); 1239 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1240 } 1241 } 1242 atomic_dec(&skb->users); 1243 dev_kfree_skb_any(skb); 1244 skb = skb_dequeue(&buf->skb_list); 1245 } 1246 } 1247 1248 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1249 struct qeth_qdio_out_buffer *buf, 1250 enum qeth_qdio_buffer_states newbufstate) 1251 { 1252 int i; 1253 1254 /* is PCI flag set on buffer? */ 1255 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1256 atomic_dec(&queue->set_pci_flags_count); 1257 1258 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1259 qeth_release_skbs(buf); 1260 } 1261 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1262 if (buf->buffer->element[i].addr && buf->is_header[i]) 1263 kmem_cache_free(qeth_core_header_cache, 1264 buf->buffer->element[i].addr); 1265 buf->is_header[i] = 0; 1266 buf->buffer->element[i].length = 0; 1267 buf->buffer->element[i].addr = NULL; 1268 buf->buffer->element[i].eflags = 0; 1269 buf->buffer->element[i].sflags = 0; 1270 } 1271 buf->buffer->element[15].eflags = 0; 1272 buf->buffer->element[15].sflags = 0; 1273 buf->next_element_to_fill = 0; 1274 atomic_set(&buf->state, newbufstate); 1275 } 1276 1277 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1278 { 1279 int j; 1280 1281 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1282 if (!q->bufs[j]) 1283 continue; 1284 qeth_cleanup_handled_pending(q, j, 1); 1285 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1286 if (free) { 1287 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1288 q->bufs[j] = NULL; 1289 } 1290 } 1291 } 1292 1293 void qeth_clear_qdio_buffers(struct qeth_card *card) 1294 { 1295 int i; 1296 1297 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1298 /* clear outbound buffers to free skbs */ 1299 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1300 if (card->qdio.out_qs[i]) { 1301 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1302 } 1303 } 1304 } 1305 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1306 1307 static void qeth_free_buffer_pool(struct qeth_card *card) 1308 { 1309 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1310 int i = 0; 1311 list_for_each_entry_safe(pool_entry, tmp, 1312 &card->qdio.init_pool.entry_list, init_list){ 1313 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1314 free_page((unsigned long)pool_entry->elements[i]); 1315 list_del(&pool_entry->init_list); 1316 kfree(pool_entry); 1317 } 1318 } 1319 1320 static void qeth_clean_channel(struct qeth_channel *channel) 1321 { 1322 int cnt; 1323 1324 QETH_DBF_TEXT(SETUP, 2, "freech"); 1325 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1326 kfree(channel->iob[cnt].data); 1327 } 1328 1329 static void qeth_set_single_write_queues(struct qeth_card *card) 1330 { 1331 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1332 (card->qdio.no_out_queues == 4)) 1333 qeth_free_qdio_buffers(card); 1334 1335 card->qdio.no_out_queues = 1; 1336 if (card->qdio.default_out_queue != 0) 1337 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1338 1339 card->qdio.default_out_queue = 0; 1340 } 1341 1342 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1343 { 1344 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1345 (card->qdio.no_out_queues == 1)) { 1346 qeth_free_qdio_buffers(card); 1347 card->qdio.default_out_queue = 2; 1348 } 1349 card->qdio.no_out_queues = 4; 1350 } 1351 1352 static void qeth_update_from_chp_desc(struct qeth_card *card) 1353 { 1354 struct ccw_device *ccwdev; 1355 struct channel_path_desc *chp_dsc; 1356 1357 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1358 1359 ccwdev = card->data.ccwdev; 1360 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1361 if (!chp_dsc) 1362 goto out; 1363 1364 card->info.func_level = 0x4100 + chp_dsc->desc; 1365 if (card->info.type == QETH_CARD_TYPE_IQD) 1366 goto out; 1367 1368 /* CHPP field bit 6 == 1 -> single queue */ 1369 if ((chp_dsc->chpp & 0x02) == 0x02) 1370 qeth_set_single_write_queues(card); 1371 else 1372 qeth_set_multiple_write_queues(card); 1373 out: 1374 kfree(chp_dsc); 1375 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1376 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1377 } 1378 1379 static void qeth_init_qdio_info(struct qeth_card *card) 1380 { 1381 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1382 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1383 /* inbound */ 1384 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1385 if (card->info.type == QETH_CARD_TYPE_IQD) 1386 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1387 else 1388 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1389 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1390 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1391 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1392 } 1393 1394 static void qeth_set_intial_options(struct qeth_card *card) 1395 { 1396 card->options.route4.type = NO_ROUTER; 1397 card->options.route6.type = NO_ROUTER; 1398 card->options.fake_broadcast = 0; 1399 card->options.add_hhlen = DEFAULT_ADD_HHLEN; 1400 card->options.performance_stats = 0; 1401 card->options.rx_sg_cb = QETH_RX_SG_CB; 1402 card->options.isolation = ISOLATION_MODE_NONE; 1403 card->options.cq = QETH_CQ_DISABLED; 1404 } 1405 1406 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1407 { 1408 unsigned long flags; 1409 int rc = 0; 1410 1411 spin_lock_irqsave(&card->thread_mask_lock, flags); 1412 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1413 (u8) card->thread_start_mask, 1414 (u8) card->thread_allowed_mask, 1415 (u8) card->thread_running_mask); 1416 rc = (card->thread_start_mask & thread); 1417 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1418 return rc; 1419 } 1420 1421 static void qeth_start_kernel_thread(struct work_struct *work) 1422 { 1423 struct task_struct *ts; 1424 struct qeth_card *card = container_of(work, struct qeth_card, 1425 kernel_thread_starter); 1426 QETH_CARD_TEXT(card , 2, "strthrd"); 1427 1428 if (card->read.state != CH_STATE_UP && 1429 card->write.state != CH_STATE_UP) 1430 return; 1431 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1432 ts = kthread_run(card->discipline->recover, (void *)card, 1433 "qeth_recover"); 1434 if (IS_ERR(ts)) { 1435 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1436 qeth_clear_thread_running_bit(card, 1437 QETH_RECOVER_THREAD); 1438 } 1439 } 1440 } 1441 1442 static void qeth_buffer_reclaim_work(struct work_struct *); 1443 static int qeth_setup_card(struct qeth_card *card) 1444 { 1445 1446 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1447 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1448 1449 card->read.state = CH_STATE_DOWN; 1450 card->write.state = CH_STATE_DOWN; 1451 card->data.state = CH_STATE_DOWN; 1452 card->state = CARD_STATE_DOWN; 1453 card->lan_online = 0; 1454 card->read_or_write_problem = 0; 1455 card->dev = NULL; 1456 spin_lock_init(&card->vlanlock); 1457 spin_lock_init(&card->mclock); 1458 spin_lock_init(&card->lock); 1459 spin_lock_init(&card->ip_lock); 1460 spin_lock_init(&card->thread_mask_lock); 1461 mutex_init(&card->conf_mutex); 1462 mutex_init(&card->discipline_mutex); 1463 card->thread_start_mask = 0; 1464 card->thread_allowed_mask = 0; 1465 card->thread_running_mask = 0; 1466 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1467 INIT_LIST_HEAD(&card->cmd_waiter_list); 1468 init_waitqueue_head(&card->wait_q); 1469 /* initial options */ 1470 qeth_set_intial_options(card); 1471 /* IP address takeover */ 1472 INIT_LIST_HEAD(&card->ipato.entries); 1473 card->ipato.enabled = 0; 1474 card->ipato.invert4 = 0; 1475 card->ipato.invert6 = 0; 1476 /* init QDIO stuff */ 1477 qeth_init_qdio_info(card); 1478 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1479 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1480 return 0; 1481 } 1482 1483 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1484 { 1485 struct qeth_card *card = container_of(slr, struct qeth_card, 1486 qeth_service_level); 1487 if (card->info.mcl_level[0]) 1488 seq_printf(m, "qeth: %s firmware level %s\n", 1489 CARD_BUS_ID(card), card->info.mcl_level); 1490 } 1491 1492 static struct qeth_card *qeth_alloc_card(void) 1493 { 1494 struct qeth_card *card; 1495 1496 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1497 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1498 if (!card) 1499 goto out; 1500 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1501 if (qeth_setup_channel(&card->read)) 1502 goto out_ip; 1503 if (qeth_setup_channel(&card->write)) 1504 goto out_channel; 1505 card->options.layer2 = -1; 1506 card->qeth_service_level.seq_print = qeth_core_sl_print; 1507 register_service_level(&card->qeth_service_level); 1508 return card; 1509 1510 out_channel: 1511 qeth_clean_channel(&card->read); 1512 out_ip: 1513 kfree(card); 1514 out: 1515 return NULL; 1516 } 1517 1518 static int qeth_determine_card_type(struct qeth_card *card) 1519 { 1520 int i = 0; 1521 1522 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1523 1524 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1525 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1526 while (known_devices[i][QETH_DEV_MODEL_IND]) { 1527 if ((CARD_RDEV(card)->id.dev_type == 1528 known_devices[i][QETH_DEV_TYPE_IND]) && 1529 (CARD_RDEV(card)->id.dev_model == 1530 known_devices[i][QETH_DEV_MODEL_IND])) { 1531 card->info.type = known_devices[i][QETH_DEV_MODEL_IND]; 1532 card->qdio.no_out_queues = 1533 known_devices[i][QETH_QUEUE_NO_IND]; 1534 card->qdio.no_in_queues = 1; 1535 card->info.is_multicast_different = 1536 known_devices[i][QETH_MULTICAST_IND]; 1537 qeth_update_from_chp_desc(card); 1538 return 0; 1539 } 1540 i++; 1541 } 1542 card->info.type = QETH_CARD_TYPE_UNKNOWN; 1543 dev_err(&card->gdev->dev, "The adapter hardware is of an " 1544 "unknown type\n"); 1545 return -ENOENT; 1546 } 1547 1548 static int qeth_clear_channel(struct qeth_channel *channel) 1549 { 1550 unsigned long flags; 1551 struct qeth_card *card; 1552 int rc; 1553 1554 card = CARD_FROM_CDEV(channel->ccwdev); 1555 QETH_CARD_TEXT(card, 3, "clearch"); 1556 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1557 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1558 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1559 1560 if (rc) 1561 return rc; 1562 rc = wait_event_interruptible_timeout(card->wait_q, 1563 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1564 if (rc == -ERESTARTSYS) 1565 return rc; 1566 if (channel->state != CH_STATE_STOPPED) 1567 return -ETIME; 1568 channel->state = CH_STATE_DOWN; 1569 return 0; 1570 } 1571 1572 static int qeth_halt_channel(struct qeth_channel *channel) 1573 { 1574 unsigned long flags; 1575 struct qeth_card *card; 1576 int rc; 1577 1578 card = CARD_FROM_CDEV(channel->ccwdev); 1579 QETH_CARD_TEXT(card, 3, "haltch"); 1580 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1581 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1582 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1583 1584 if (rc) 1585 return rc; 1586 rc = wait_event_interruptible_timeout(card->wait_q, 1587 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1588 if (rc == -ERESTARTSYS) 1589 return rc; 1590 if (channel->state != CH_STATE_HALTED) 1591 return -ETIME; 1592 return 0; 1593 } 1594 1595 static int qeth_halt_channels(struct qeth_card *card) 1596 { 1597 int rc1 = 0, rc2 = 0, rc3 = 0; 1598 1599 QETH_CARD_TEXT(card, 3, "haltchs"); 1600 rc1 = qeth_halt_channel(&card->read); 1601 rc2 = qeth_halt_channel(&card->write); 1602 rc3 = qeth_halt_channel(&card->data); 1603 if (rc1) 1604 return rc1; 1605 if (rc2) 1606 return rc2; 1607 return rc3; 1608 } 1609 1610 static int qeth_clear_channels(struct qeth_card *card) 1611 { 1612 int rc1 = 0, rc2 = 0, rc3 = 0; 1613 1614 QETH_CARD_TEXT(card, 3, "clearchs"); 1615 rc1 = qeth_clear_channel(&card->read); 1616 rc2 = qeth_clear_channel(&card->write); 1617 rc3 = qeth_clear_channel(&card->data); 1618 if (rc1) 1619 return rc1; 1620 if (rc2) 1621 return rc2; 1622 return rc3; 1623 } 1624 1625 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1626 { 1627 int rc = 0; 1628 1629 QETH_CARD_TEXT(card, 3, "clhacrd"); 1630 1631 if (halt) 1632 rc = qeth_halt_channels(card); 1633 if (rc) 1634 return rc; 1635 return qeth_clear_channels(card); 1636 } 1637 1638 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1639 { 1640 int rc = 0; 1641 1642 QETH_CARD_TEXT(card, 3, "qdioclr"); 1643 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1644 QETH_QDIO_CLEANING)) { 1645 case QETH_QDIO_ESTABLISHED: 1646 if (card->info.type == QETH_CARD_TYPE_IQD) 1647 rc = qdio_shutdown(CARD_DDEV(card), 1648 QDIO_FLAG_CLEANUP_USING_HALT); 1649 else 1650 rc = qdio_shutdown(CARD_DDEV(card), 1651 QDIO_FLAG_CLEANUP_USING_CLEAR); 1652 if (rc) 1653 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1654 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1655 break; 1656 case QETH_QDIO_CLEANING: 1657 return rc; 1658 default: 1659 break; 1660 } 1661 rc = qeth_clear_halt_card(card, use_halt); 1662 if (rc) 1663 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1664 card->state = CARD_STATE_DOWN; 1665 return rc; 1666 } 1667 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1668 1669 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1670 int *length) 1671 { 1672 struct ciw *ciw; 1673 char *rcd_buf; 1674 int ret; 1675 struct qeth_channel *channel = &card->data; 1676 unsigned long flags; 1677 1678 /* 1679 * scan for RCD command in extended SenseID data 1680 */ 1681 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1682 if (!ciw || ciw->cmd == 0) 1683 return -EOPNOTSUPP; 1684 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1685 if (!rcd_buf) 1686 return -ENOMEM; 1687 1688 channel->ccw.cmd_code = ciw->cmd; 1689 channel->ccw.cda = (__u32) __pa(rcd_buf); 1690 channel->ccw.count = ciw->count; 1691 channel->ccw.flags = CCW_FLAG_SLI; 1692 channel->state = CH_STATE_RCD; 1693 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1694 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1695 QETH_RCD_PARM, LPM_ANYPATH, 0, 1696 QETH_RCD_TIMEOUT); 1697 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1698 if (!ret) 1699 wait_event(card->wait_q, 1700 (channel->state == CH_STATE_RCD_DONE || 1701 channel->state == CH_STATE_DOWN)); 1702 if (channel->state == CH_STATE_DOWN) 1703 ret = -EIO; 1704 else 1705 channel->state = CH_STATE_DOWN; 1706 if (ret) { 1707 kfree(rcd_buf); 1708 *buffer = NULL; 1709 *length = 0; 1710 } else { 1711 *length = ciw->count; 1712 *buffer = rcd_buf; 1713 } 1714 return ret; 1715 } 1716 1717 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1718 { 1719 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1720 card->info.chpid = prcd[30]; 1721 card->info.unit_addr2 = prcd[31]; 1722 card->info.cula = prcd[63]; 1723 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1724 (prcd[0x11] == _ascebc['M'])); 1725 } 1726 1727 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1728 { 1729 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1730 1731 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1732 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1733 card->info.blkt.time_total = 0; 1734 card->info.blkt.inter_packet = 0; 1735 card->info.blkt.inter_packet_jumbo = 0; 1736 } else { 1737 card->info.blkt.time_total = 250; 1738 card->info.blkt.inter_packet = 5; 1739 card->info.blkt.inter_packet_jumbo = 15; 1740 } 1741 } 1742 1743 static void qeth_init_tokens(struct qeth_card *card) 1744 { 1745 card->token.issuer_rm_w = 0x00010103UL; 1746 card->token.cm_filter_w = 0x00010108UL; 1747 card->token.cm_connection_w = 0x0001010aUL; 1748 card->token.ulp_filter_w = 0x0001010bUL; 1749 card->token.ulp_connection_w = 0x0001010dUL; 1750 } 1751 1752 static void qeth_init_func_level(struct qeth_card *card) 1753 { 1754 switch (card->info.type) { 1755 case QETH_CARD_TYPE_IQD: 1756 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1757 break; 1758 case QETH_CARD_TYPE_OSD: 1759 case QETH_CARD_TYPE_OSN: 1760 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1761 break; 1762 default: 1763 break; 1764 } 1765 } 1766 1767 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1768 void (*idx_reply_cb)(struct qeth_channel *, 1769 struct qeth_cmd_buffer *)) 1770 { 1771 struct qeth_cmd_buffer *iob; 1772 unsigned long flags; 1773 int rc; 1774 struct qeth_card *card; 1775 1776 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1777 card = CARD_FROM_CDEV(channel->ccwdev); 1778 iob = qeth_get_buffer(channel); 1779 if (!iob) 1780 return -ENOMEM; 1781 iob->callback = idx_reply_cb; 1782 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1783 channel->ccw.count = QETH_BUFSIZE; 1784 channel->ccw.cda = (__u32) __pa(iob->data); 1785 1786 wait_event(card->wait_q, 1787 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1788 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1789 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1790 rc = ccw_device_start(channel->ccwdev, 1791 &channel->ccw, (addr_t) iob, 0, 0); 1792 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1793 1794 if (rc) { 1795 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1796 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1797 atomic_set(&channel->irq_pending, 0); 1798 wake_up(&card->wait_q); 1799 return rc; 1800 } 1801 rc = wait_event_interruptible_timeout(card->wait_q, 1802 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1803 if (rc == -ERESTARTSYS) 1804 return rc; 1805 if (channel->state != CH_STATE_UP) { 1806 rc = -ETIME; 1807 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1808 qeth_clear_cmd_buffers(channel); 1809 } else 1810 rc = 0; 1811 return rc; 1812 } 1813 1814 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1815 void (*idx_reply_cb)(struct qeth_channel *, 1816 struct qeth_cmd_buffer *)) 1817 { 1818 struct qeth_card *card; 1819 struct qeth_cmd_buffer *iob; 1820 unsigned long flags; 1821 __u16 temp; 1822 __u8 tmp; 1823 int rc; 1824 struct ccw_dev_id temp_devid; 1825 1826 card = CARD_FROM_CDEV(channel->ccwdev); 1827 1828 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1829 1830 iob = qeth_get_buffer(channel); 1831 if (!iob) 1832 return -ENOMEM; 1833 iob->callback = idx_reply_cb; 1834 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1835 channel->ccw.count = IDX_ACTIVATE_SIZE; 1836 channel->ccw.cda = (__u32) __pa(iob->data); 1837 if (channel == &card->write) { 1838 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1839 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1840 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1841 card->seqno.trans_hdr++; 1842 } else { 1843 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1844 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1845 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1846 } 1847 tmp = ((__u8)card->info.portno) | 0x80; 1848 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1849 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1850 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1851 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1852 &card->info.func_level, sizeof(__u16)); 1853 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1854 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1855 temp = (card->info.cula << 8) + card->info.unit_addr2; 1856 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1857 1858 wait_event(card->wait_q, 1859 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1860 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1861 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1862 rc = ccw_device_start(channel->ccwdev, 1863 &channel->ccw, (addr_t) iob, 0, 0); 1864 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1865 1866 if (rc) { 1867 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1868 rc); 1869 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1870 atomic_set(&channel->irq_pending, 0); 1871 wake_up(&card->wait_q); 1872 return rc; 1873 } 1874 rc = wait_event_interruptible_timeout(card->wait_q, 1875 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1876 if (rc == -ERESTARTSYS) 1877 return rc; 1878 if (channel->state != CH_STATE_ACTIVATING) { 1879 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1880 " failed to recover an error on the device\n"); 1881 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1882 dev_name(&channel->ccwdev->dev)); 1883 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1884 qeth_clear_cmd_buffers(channel); 1885 return -ETIME; 1886 } 1887 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1888 } 1889 1890 static int qeth_peer_func_level(int level) 1891 { 1892 if ((level & 0xff) == 8) 1893 return (level & 0xff) + 0x400; 1894 if (((level >> 8) & 3) == 1) 1895 return (level & 0xff) + 0x200; 1896 return level; 1897 } 1898 1899 static void qeth_idx_write_cb(struct qeth_channel *channel, 1900 struct qeth_cmd_buffer *iob) 1901 { 1902 struct qeth_card *card; 1903 __u16 temp; 1904 1905 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1906 1907 if (channel->state == CH_STATE_DOWN) { 1908 channel->state = CH_STATE_ACTIVATING; 1909 goto out; 1910 } 1911 card = CARD_FROM_CDEV(channel->ccwdev); 1912 1913 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1914 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1915 dev_err(&card->write.ccwdev->dev, 1916 "The adapter is used exclusively by another " 1917 "host\n"); 1918 else 1919 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1920 " negative reply\n", 1921 dev_name(&card->write.ccwdev->dev)); 1922 goto out; 1923 } 1924 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1925 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1926 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1927 "function level mismatch (sent: 0x%x, received: " 1928 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 1929 card->info.func_level, temp); 1930 goto out; 1931 } 1932 channel->state = CH_STATE_UP; 1933 out: 1934 qeth_release_buffer(channel, iob); 1935 } 1936 1937 static void qeth_idx_read_cb(struct qeth_channel *channel, 1938 struct qeth_cmd_buffer *iob) 1939 { 1940 struct qeth_card *card; 1941 __u16 temp; 1942 1943 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1944 if (channel->state == CH_STATE_DOWN) { 1945 channel->state = CH_STATE_ACTIVATING; 1946 goto out; 1947 } 1948 1949 card = CARD_FROM_CDEV(channel->ccwdev); 1950 if (qeth_check_idx_response(card, iob->data)) 1951 goto out; 1952 1953 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1954 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1955 case QETH_IDX_ACT_ERR_EXCL: 1956 dev_err(&card->write.ccwdev->dev, 1957 "The adapter is used exclusively by another " 1958 "host\n"); 1959 break; 1960 case QETH_IDX_ACT_ERR_AUTH: 1961 case QETH_IDX_ACT_ERR_AUTH_USER: 1962 dev_err(&card->read.ccwdev->dev, 1963 "Setting the device online failed because of " 1964 "insufficient authorization\n"); 1965 break; 1966 default: 1967 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1968 " negative reply\n", 1969 dev_name(&card->read.ccwdev->dev)); 1970 } 1971 QETH_CARD_TEXT_(card, 2, "idxread%c", 1972 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1973 goto out; 1974 } 1975 1976 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1977 if (temp != qeth_peer_func_level(card->info.func_level)) { 1978 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 1979 "level mismatch (sent: 0x%x, received: 0x%x)\n", 1980 dev_name(&card->read.ccwdev->dev), 1981 card->info.func_level, temp); 1982 goto out; 1983 } 1984 memcpy(&card->token.issuer_rm_r, 1985 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1986 QETH_MPC_TOKEN_LENGTH); 1987 memcpy(&card->info.mcl_level[0], 1988 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1989 channel->state = CH_STATE_UP; 1990 out: 1991 qeth_release_buffer(channel, iob); 1992 } 1993 1994 void qeth_prepare_control_data(struct qeth_card *card, int len, 1995 struct qeth_cmd_buffer *iob) 1996 { 1997 qeth_setup_ccw(&card->write, iob->data, len); 1998 iob->callback = qeth_release_buffer; 1999 2000 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2001 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2002 card->seqno.trans_hdr++; 2003 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2004 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2005 card->seqno.pdu_hdr++; 2006 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2007 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2008 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2009 } 2010 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2011 2012 /** 2013 * qeth_send_control_data() - send control command to the card 2014 * @card: qeth_card structure pointer 2015 * @len: size of the command buffer 2016 * @iob: qeth_cmd_buffer pointer 2017 * @reply_cb: callback function pointer 2018 * @cb_card: pointer to the qeth_card structure 2019 * @cb_reply: pointer to the qeth_reply structure 2020 * @cb_cmd: pointer to the original iob for non-IPA 2021 * commands, or to the qeth_ipa_cmd structure 2022 * for the IPA commands. 2023 * @reply_param: private pointer passed to the callback 2024 * 2025 * Returns the value of the `return_code' field of the response 2026 * block returned from the hardware, or other error indication. 2027 * Value of zero indicates successful execution of the command. 2028 * 2029 * Callback function gets called one or more times, with cb_cmd 2030 * pointing to the response returned by the hardware. Callback 2031 * function must return non-zero if more reply blocks are expected, 2032 * and zero if the last or only reply block is received. Callback 2033 * function can get the value of the reply_param pointer from the 2034 * field 'param' of the structure qeth_reply. 2035 */ 2036 2037 int qeth_send_control_data(struct qeth_card *card, int len, 2038 struct qeth_cmd_buffer *iob, 2039 int (*reply_cb)(struct qeth_card *cb_card, 2040 struct qeth_reply *cb_reply, 2041 unsigned long cb_cmd), 2042 void *reply_param) 2043 { 2044 int rc; 2045 unsigned long flags; 2046 struct qeth_reply *reply = NULL; 2047 unsigned long timeout, event_timeout; 2048 struct qeth_ipa_cmd *cmd; 2049 2050 QETH_CARD_TEXT(card, 2, "sendctl"); 2051 2052 if (card->read_or_write_problem) { 2053 qeth_release_buffer(iob->channel, iob); 2054 return -EIO; 2055 } 2056 reply = qeth_alloc_reply(card); 2057 if (!reply) { 2058 return -ENOMEM; 2059 } 2060 reply->callback = reply_cb; 2061 reply->param = reply_param; 2062 if (card->state == CARD_STATE_DOWN) 2063 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2064 else 2065 reply->seqno = card->seqno.ipa++; 2066 init_waitqueue_head(&reply->wait_q); 2067 spin_lock_irqsave(&card->lock, flags); 2068 list_add_tail(&reply->list, &card->cmd_waiter_list); 2069 spin_unlock_irqrestore(&card->lock, flags); 2070 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2071 2072 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2073 qeth_prepare_control_data(card, len, iob); 2074 2075 if (IS_IPA(iob->data)) 2076 event_timeout = QETH_IPA_TIMEOUT; 2077 else 2078 event_timeout = QETH_TIMEOUT; 2079 timeout = jiffies + event_timeout; 2080 2081 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2082 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2083 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2084 (addr_t) iob, 0, 0); 2085 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2086 if (rc) { 2087 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2088 "ccw_device_start rc = %i\n", 2089 dev_name(&card->write.ccwdev->dev), rc); 2090 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2091 spin_lock_irqsave(&card->lock, flags); 2092 list_del_init(&reply->list); 2093 qeth_put_reply(reply); 2094 spin_unlock_irqrestore(&card->lock, flags); 2095 qeth_release_buffer(iob->channel, iob); 2096 atomic_set(&card->write.irq_pending, 0); 2097 wake_up(&card->wait_q); 2098 return rc; 2099 } 2100 2101 /* we have only one long running ipassist, since we can ensure 2102 process context of this command we can sleep */ 2103 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2104 if ((cmd->hdr.command == IPA_CMD_SETIP) && 2105 (cmd->hdr.prot_version == QETH_PROT_IPV4)) { 2106 if (!wait_event_timeout(reply->wait_q, 2107 atomic_read(&reply->received), event_timeout)) 2108 goto time_err; 2109 } else { 2110 while (!atomic_read(&reply->received)) { 2111 if (time_after(jiffies, timeout)) 2112 goto time_err; 2113 cpu_relax(); 2114 } 2115 } 2116 2117 if (reply->rc == -EIO) 2118 goto error; 2119 rc = reply->rc; 2120 qeth_put_reply(reply); 2121 return rc; 2122 2123 time_err: 2124 reply->rc = -ETIME; 2125 spin_lock_irqsave(&reply->card->lock, flags); 2126 list_del_init(&reply->list); 2127 spin_unlock_irqrestore(&reply->card->lock, flags); 2128 atomic_inc(&reply->received); 2129 error: 2130 atomic_set(&card->write.irq_pending, 0); 2131 qeth_release_buffer(iob->channel, iob); 2132 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2133 rc = reply->rc; 2134 qeth_put_reply(reply); 2135 return rc; 2136 } 2137 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2138 2139 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2140 unsigned long data) 2141 { 2142 struct qeth_cmd_buffer *iob; 2143 2144 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2145 2146 iob = (struct qeth_cmd_buffer *) data; 2147 memcpy(&card->token.cm_filter_r, 2148 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2149 QETH_MPC_TOKEN_LENGTH); 2150 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2151 return 0; 2152 } 2153 2154 static int qeth_cm_enable(struct qeth_card *card) 2155 { 2156 int rc; 2157 struct qeth_cmd_buffer *iob; 2158 2159 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2160 2161 iob = qeth_wait_for_buffer(&card->write); 2162 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2163 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2164 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2165 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2166 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2167 2168 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2169 qeth_cm_enable_cb, NULL); 2170 return rc; 2171 } 2172 2173 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2174 unsigned long data) 2175 { 2176 2177 struct qeth_cmd_buffer *iob; 2178 2179 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2180 2181 iob = (struct qeth_cmd_buffer *) data; 2182 memcpy(&card->token.cm_connection_r, 2183 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2184 QETH_MPC_TOKEN_LENGTH); 2185 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2186 return 0; 2187 } 2188 2189 static int qeth_cm_setup(struct qeth_card *card) 2190 { 2191 int rc; 2192 struct qeth_cmd_buffer *iob; 2193 2194 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2195 2196 iob = qeth_wait_for_buffer(&card->write); 2197 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2198 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2199 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2200 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2201 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2202 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2203 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2204 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2205 qeth_cm_setup_cb, NULL); 2206 return rc; 2207 2208 } 2209 2210 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2211 { 2212 switch (card->info.type) { 2213 case QETH_CARD_TYPE_UNKNOWN: 2214 return 1500; 2215 case QETH_CARD_TYPE_IQD: 2216 return card->info.max_mtu; 2217 case QETH_CARD_TYPE_OSD: 2218 switch (card->info.link_type) { 2219 case QETH_LINK_TYPE_HSTR: 2220 case QETH_LINK_TYPE_LANE_TR: 2221 return 2000; 2222 default: 2223 return card->options.layer2 ? 1500 : 1492; 2224 } 2225 case QETH_CARD_TYPE_OSM: 2226 case QETH_CARD_TYPE_OSX: 2227 return card->options.layer2 ? 1500 : 1492; 2228 default: 2229 return 1500; 2230 } 2231 } 2232 2233 static inline int qeth_get_mtu_outof_framesize(int framesize) 2234 { 2235 switch (framesize) { 2236 case 0x4000: 2237 return 8192; 2238 case 0x6000: 2239 return 16384; 2240 case 0xa000: 2241 return 32768; 2242 case 0xffff: 2243 return 57344; 2244 default: 2245 return 0; 2246 } 2247 } 2248 2249 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2250 { 2251 switch (card->info.type) { 2252 case QETH_CARD_TYPE_OSD: 2253 case QETH_CARD_TYPE_OSM: 2254 case QETH_CARD_TYPE_OSX: 2255 case QETH_CARD_TYPE_IQD: 2256 return ((mtu >= 576) && 2257 (mtu <= card->info.max_mtu)); 2258 case QETH_CARD_TYPE_OSN: 2259 case QETH_CARD_TYPE_UNKNOWN: 2260 default: 2261 return 1; 2262 } 2263 } 2264 2265 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2266 unsigned long data) 2267 { 2268 2269 __u16 mtu, framesize; 2270 __u16 len; 2271 __u8 link_type; 2272 struct qeth_cmd_buffer *iob; 2273 2274 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2275 2276 iob = (struct qeth_cmd_buffer *) data; 2277 memcpy(&card->token.ulp_filter_r, 2278 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2279 QETH_MPC_TOKEN_LENGTH); 2280 if (card->info.type == QETH_CARD_TYPE_IQD) { 2281 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2282 mtu = qeth_get_mtu_outof_framesize(framesize); 2283 if (!mtu) { 2284 iob->rc = -EINVAL; 2285 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2286 return 0; 2287 } 2288 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2289 /* frame size has changed */ 2290 if (card->dev && 2291 ((card->dev->mtu == card->info.initial_mtu) || 2292 (card->dev->mtu > mtu))) 2293 card->dev->mtu = mtu; 2294 qeth_free_qdio_buffers(card); 2295 } 2296 card->info.initial_mtu = mtu; 2297 card->info.max_mtu = mtu; 2298 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2299 } else { 2300 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2301 iob->data); 2302 card->info.initial_mtu = min(card->info.max_mtu, 2303 qeth_get_initial_mtu_for_card(card)); 2304 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2305 } 2306 2307 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2308 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2309 memcpy(&link_type, 2310 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2311 card->info.link_type = link_type; 2312 } else 2313 card->info.link_type = 0; 2314 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2315 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2316 return 0; 2317 } 2318 2319 static int qeth_ulp_enable(struct qeth_card *card) 2320 { 2321 int rc; 2322 char prot_type; 2323 struct qeth_cmd_buffer *iob; 2324 2325 /*FIXME: trace view callbacks*/ 2326 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2327 2328 iob = qeth_wait_for_buffer(&card->write); 2329 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2330 2331 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2332 (__u8) card->info.portno; 2333 if (card->options.layer2) 2334 if (card->info.type == QETH_CARD_TYPE_OSN) 2335 prot_type = QETH_PROT_OSN2; 2336 else 2337 prot_type = QETH_PROT_LAYER2; 2338 else 2339 prot_type = QETH_PROT_TCPIP; 2340 2341 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2342 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2343 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2344 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2345 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2346 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2347 qeth_ulp_enable_cb, NULL); 2348 return rc; 2349 2350 } 2351 2352 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2353 unsigned long data) 2354 { 2355 struct qeth_cmd_buffer *iob; 2356 2357 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2358 2359 iob = (struct qeth_cmd_buffer *) data; 2360 memcpy(&card->token.ulp_connection_r, 2361 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2362 QETH_MPC_TOKEN_LENGTH); 2363 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2364 3)) { 2365 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2366 dev_err(&card->gdev->dev, "A connection could not be " 2367 "established because of an OLM limit\n"); 2368 iob->rc = -EMLINK; 2369 } 2370 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2371 return 0; 2372 } 2373 2374 static int qeth_ulp_setup(struct qeth_card *card) 2375 { 2376 int rc; 2377 __u16 temp; 2378 struct qeth_cmd_buffer *iob; 2379 struct ccw_dev_id dev_id; 2380 2381 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2382 2383 iob = qeth_wait_for_buffer(&card->write); 2384 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2385 2386 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2387 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2388 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2389 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2390 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2391 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2392 2393 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2394 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2395 temp = (card->info.cula << 8) + card->info.unit_addr2; 2396 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2397 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2398 qeth_ulp_setup_cb, NULL); 2399 return rc; 2400 } 2401 2402 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2403 { 2404 int rc; 2405 struct qeth_qdio_out_buffer *newbuf; 2406 2407 rc = 0; 2408 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2409 if (!newbuf) { 2410 rc = -ENOMEM; 2411 goto out; 2412 } 2413 newbuf->buffer = q->qdio_bufs[bidx]; 2414 skb_queue_head_init(&newbuf->skb_list); 2415 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2416 newbuf->q = q; 2417 newbuf->aob = NULL; 2418 newbuf->next_pending = q->bufs[bidx]; 2419 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2420 q->bufs[bidx] = newbuf; 2421 if (q->bufstates) { 2422 q->bufstates[bidx].user = newbuf; 2423 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2424 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2425 QETH_CARD_TEXT_(q->card, 2, "%lx", 2426 (long) newbuf->next_pending); 2427 } 2428 out: 2429 return rc; 2430 } 2431 2432 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2433 { 2434 if (!q) 2435 return; 2436 2437 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2438 kfree(q); 2439 } 2440 2441 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2442 { 2443 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2444 2445 if (!q) 2446 return NULL; 2447 2448 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2449 kfree(q); 2450 return NULL; 2451 } 2452 return q; 2453 } 2454 2455 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2456 { 2457 int i, j; 2458 2459 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2460 2461 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2462 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2463 return 0; 2464 2465 QETH_DBF_TEXT(SETUP, 2, "inq"); 2466 card->qdio.in_q = qeth_alloc_qdio_queue(); 2467 if (!card->qdio.in_q) 2468 goto out_nomem; 2469 2470 /* inbound buffer pool */ 2471 if (qeth_alloc_buffer_pool(card)) 2472 goto out_freeinq; 2473 2474 /* outbound */ 2475 card->qdio.out_qs = 2476 kzalloc(card->qdio.no_out_queues * 2477 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2478 if (!card->qdio.out_qs) 2479 goto out_freepool; 2480 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2481 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2482 if (!card->qdio.out_qs[i]) 2483 goto out_freeoutq; 2484 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2485 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2486 card->qdio.out_qs[i]->queue_no = i; 2487 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2488 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2489 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2490 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2491 goto out_freeoutqbufs; 2492 } 2493 } 2494 2495 /* completion */ 2496 if (qeth_alloc_cq(card)) 2497 goto out_freeoutq; 2498 2499 return 0; 2500 2501 out_freeoutqbufs: 2502 while (j > 0) { 2503 --j; 2504 kmem_cache_free(qeth_qdio_outbuf_cache, 2505 card->qdio.out_qs[i]->bufs[j]); 2506 card->qdio.out_qs[i]->bufs[j] = NULL; 2507 } 2508 out_freeoutq: 2509 while (i > 0) { 2510 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2511 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2512 } 2513 kfree(card->qdio.out_qs); 2514 card->qdio.out_qs = NULL; 2515 out_freepool: 2516 qeth_free_buffer_pool(card); 2517 out_freeinq: 2518 qeth_free_qdio_queue(card->qdio.in_q); 2519 card->qdio.in_q = NULL; 2520 out_nomem: 2521 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2522 return -ENOMEM; 2523 } 2524 2525 static void qeth_free_qdio_buffers(struct qeth_card *card) 2526 { 2527 int i, j; 2528 2529 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2530 QETH_QDIO_UNINITIALIZED) 2531 return; 2532 2533 qeth_free_cq(card); 2534 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2535 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2536 if (card->qdio.in_q->bufs[j].rx_skb) 2537 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2538 } 2539 qeth_free_qdio_queue(card->qdio.in_q); 2540 card->qdio.in_q = NULL; 2541 /* inbound buffer pool */ 2542 qeth_free_buffer_pool(card); 2543 /* free outbound qdio_qs */ 2544 if (card->qdio.out_qs) { 2545 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2546 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2547 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2548 } 2549 kfree(card->qdio.out_qs); 2550 card->qdio.out_qs = NULL; 2551 } 2552 } 2553 2554 static void qeth_create_qib_param_field(struct qeth_card *card, 2555 char *param_field) 2556 { 2557 2558 param_field[0] = _ascebc['P']; 2559 param_field[1] = _ascebc['C']; 2560 param_field[2] = _ascebc['I']; 2561 param_field[3] = _ascebc['T']; 2562 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2563 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2564 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2565 } 2566 2567 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2568 char *param_field) 2569 { 2570 param_field[16] = _ascebc['B']; 2571 param_field[17] = _ascebc['L']; 2572 param_field[18] = _ascebc['K']; 2573 param_field[19] = _ascebc['T']; 2574 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2575 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2576 *((unsigned int *) (¶m_field[28])) = 2577 card->info.blkt.inter_packet_jumbo; 2578 } 2579 2580 static int qeth_qdio_activate(struct qeth_card *card) 2581 { 2582 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2583 return qdio_activate(CARD_DDEV(card)); 2584 } 2585 2586 static int qeth_dm_act(struct qeth_card *card) 2587 { 2588 int rc; 2589 struct qeth_cmd_buffer *iob; 2590 2591 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2592 2593 iob = qeth_wait_for_buffer(&card->write); 2594 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2595 2596 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2597 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2598 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2599 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2600 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2601 return rc; 2602 } 2603 2604 static int qeth_mpc_initialize(struct qeth_card *card) 2605 { 2606 int rc; 2607 2608 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2609 2610 rc = qeth_issue_next_read(card); 2611 if (rc) { 2612 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2613 return rc; 2614 } 2615 rc = qeth_cm_enable(card); 2616 if (rc) { 2617 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2618 goto out_qdio; 2619 } 2620 rc = qeth_cm_setup(card); 2621 if (rc) { 2622 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2623 goto out_qdio; 2624 } 2625 rc = qeth_ulp_enable(card); 2626 if (rc) { 2627 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2628 goto out_qdio; 2629 } 2630 rc = qeth_ulp_setup(card); 2631 if (rc) { 2632 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2633 goto out_qdio; 2634 } 2635 rc = qeth_alloc_qdio_buffers(card); 2636 if (rc) { 2637 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2638 goto out_qdio; 2639 } 2640 rc = qeth_qdio_establish(card); 2641 if (rc) { 2642 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2643 qeth_free_qdio_buffers(card); 2644 goto out_qdio; 2645 } 2646 rc = qeth_qdio_activate(card); 2647 if (rc) { 2648 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2649 goto out_qdio; 2650 } 2651 rc = qeth_dm_act(card); 2652 if (rc) { 2653 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2654 goto out_qdio; 2655 } 2656 2657 return 0; 2658 out_qdio: 2659 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2660 qdio_free(CARD_DDEV(card)); 2661 return rc; 2662 } 2663 2664 void qeth_print_status_message(struct qeth_card *card) 2665 { 2666 switch (card->info.type) { 2667 case QETH_CARD_TYPE_OSD: 2668 case QETH_CARD_TYPE_OSM: 2669 case QETH_CARD_TYPE_OSX: 2670 /* VM will use a non-zero first character 2671 * to indicate a HiperSockets like reporting 2672 * of the level OSA sets the first character to zero 2673 * */ 2674 if (!card->info.mcl_level[0]) { 2675 sprintf(card->info.mcl_level, "%02x%02x", 2676 card->info.mcl_level[2], 2677 card->info.mcl_level[3]); 2678 break; 2679 } 2680 /* fallthrough */ 2681 case QETH_CARD_TYPE_IQD: 2682 if ((card->info.guestlan) || 2683 (card->info.mcl_level[0] & 0x80)) { 2684 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2685 card->info.mcl_level[0]]; 2686 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2687 card->info.mcl_level[1]]; 2688 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2689 card->info.mcl_level[2]]; 2690 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2691 card->info.mcl_level[3]]; 2692 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2693 } 2694 break; 2695 default: 2696 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2697 } 2698 dev_info(&card->gdev->dev, 2699 "Device is a%s card%s%s%s\nwith link type %s.\n", 2700 qeth_get_cardname(card), 2701 (card->info.mcl_level[0]) ? " (level: " : "", 2702 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2703 (card->info.mcl_level[0]) ? ")" : "", 2704 qeth_get_cardname_short(card)); 2705 } 2706 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2707 2708 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2709 { 2710 struct qeth_buffer_pool_entry *entry; 2711 2712 QETH_CARD_TEXT(card, 5, "inwrklst"); 2713 2714 list_for_each_entry(entry, 2715 &card->qdio.init_pool.entry_list, init_list) { 2716 qeth_put_buffer_pool_entry(card, entry); 2717 } 2718 } 2719 2720 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2721 struct qeth_card *card) 2722 { 2723 struct list_head *plh; 2724 struct qeth_buffer_pool_entry *entry; 2725 int i, free; 2726 struct page *page; 2727 2728 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2729 return NULL; 2730 2731 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2732 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2733 free = 1; 2734 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2735 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2736 free = 0; 2737 break; 2738 } 2739 } 2740 if (free) { 2741 list_del_init(&entry->list); 2742 return entry; 2743 } 2744 } 2745 2746 /* no free buffer in pool so take first one and swap pages */ 2747 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2748 struct qeth_buffer_pool_entry, list); 2749 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2750 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2751 page = alloc_page(GFP_ATOMIC); 2752 if (!page) { 2753 return NULL; 2754 } else { 2755 free_page((unsigned long)entry->elements[i]); 2756 entry->elements[i] = page_address(page); 2757 if (card->options.performance_stats) 2758 card->perf_stats.sg_alloc_page_rx++; 2759 } 2760 } 2761 } 2762 list_del_init(&entry->list); 2763 return entry; 2764 } 2765 2766 static int qeth_init_input_buffer(struct qeth_card *card, 2767 struct qeth_qdio_buffer *buf) 2768 { 2769 struct qeth_buffer_pool_entry *pool_entry; 2770 int i; 2771 2772 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2773 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 2774 if (!buf->rx_skb) 2775 return 1; 2776 } 2777 2778 pool_entry = qeth_find_free_buffer_pool_entry(card); 2779 if (!pool_entry) 2780 return 1; 2781 2782 /* 2783 * since the buffer is accessed only from the input_tasklet 2784 * there shouldn't be a need to synchronize; also, since we use 2785 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2786 * buffers 2787 */ 2788 2789 buf->pool_entry = pool_entry; 2790 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2791 buf->buffer->element[i].length = PAGE_SIZE; 2792 buf->buffer->element[i].addr = pool_entry->elements[i]; 2793 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2794 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2795 else 2796 buf->buffer->element[i].eflags = 0; 2797 buf->buffer->element[i].sflags = 0; 2798 } 2799 return 0; 2800 } 2801 2802 int qeth_init_qdio_queues(struct qeth_card *card) 2803 { 2804 int i, j; 2805 int rc; 2806 2807 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2808 2809 /* inbound queue */ 2810 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, 2811 QDIO_MAX_BUFFERS_PER_Q); 2812 qeth_initialize_working_pool_list(card); 2813 /*give only as many buffers to hardware as we have buffer pool entries*/ 2814 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2815 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2816 card->qdio.in_q->next_buf_to_init = 2817 card->qdio.in_buf_pool.buf_count - 1; 2818 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2819 card->qdio.in_buf_pool.buf_count - 1); 2820 if (rc) { 2821 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2822 return rc; 2823 } 2824 2825 /* completion */ 2826 rc = qeth_cq_init(card); 2827 if (rc) { 2828 return rc; 2829 } 2830 2831 /* outbound queue */ 2832 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2833 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2834 QDIO_MAX_BUFFERS_PER_Q); 2835 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2836 qeth_clear_output_buffer(card->qdio.out_qs[i], 2837 card->qdio.out_qs[i]->bufs[j], 2838 QETH_QDIO_BUF_EMPTY); 2839 } 2840 card->qdio.out_qs[i]->card = card; 2841 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2842 card->qdio.out_qs[i]->do_pack = 0; 2843 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2844 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2845 atomic_set(&card->qdio.out_qs[i]->state, 2846 QETH_OUT_Q_UNLOCKED); 2847 } 2848 return 0; 2849 } 2850 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2851 2852 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2853 { 2854 switch (link_type) { 2855 case QETH_LINK_TYPE_HSTR: 2856 return 2; 2857 default: 2858 return 1; 2859 } 2860 } 2861 2862 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2863 struct qeth_ipa_cmd *cmd, __u8 command, 2864 enum qeth_prot_versions prot) 2865 { 2866 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2867 cmd->hdr.command = command; 2868 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2869 cmd->hdr.seqno = card->seqno.ipa; 2870 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2871 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2872 if (card->options.layer2) 2873 cmd->hdr.prim_version_no = 2; 2874 else 2875 cmd->hdr.prim_version_no = 1; 2876 cmd->hdr.param_count = 1; 2877 cmd->hdr.prot_version = prot; 2878 cmd->hdr.ipa_supported = 0; 2879 cmd->hdr.ipa_enabled = 0; 2880 } 2881 2882 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2883 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2884 { 2885 struct qeth_cmd_buffer *iob; 2886 struct qeth_ipa_cmd *cmd; 2887 2888 iob = qeth_get_buffer(&card->write); 2889 if (iob) { 2890 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2891 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2892 } else { 2893 dev_warn(&card->gdev->dev, 2894 "The qeth driver ran out of channel command buffers\n"); 2895 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2896 dev_name(&card->gdev->dev)); 2897 } 2898 2899 return iob; 2900 } 2901 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2902 2903 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2904 char prot_type) 2905 { 2906 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2907 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2908 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2909 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2910 } 2911 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2912 2913 /** 2914 * qeth_send_ipa_cmd() - send an IPA command 2915 * 2916 * See qeth_send_control_data() for explanation of the arguments. 2917 */ 2918 2919 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2920 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2921 unsigned long), 2922 void *reply_param) 2923 { 2924 int rc; 2925 char prot_type; 2926 2927 QETH_CARD_TEXT(card, 4, "sendipa"); 2928 2929 if (card->options.layer2) 2930 if (card->info.type == QETH_CARD_TYPE_OSN) 2931 prot_type = QETH_PROT_OSN2; 2932 else 2933 prot_type = QETH_PROT_LAYER2; 2934 else 2935 prot_type = QETH_PROT_TCPIP; 2936 qeth_prepare_ipa_cmd(card, iob, prot_type); 2937 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2938 iob, reply_cb, reply_param); 2939 if (rc == -ETIME) { 2940 qeth_clear_ipacmd_list(card); 2941 qeth_schedule_recovery(card); 2942 } 2943 return rc; 2944 } 2945 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2946 2947 int qeth_send_startlan(struct qeth_card *card) 2948 { 2949 int rc; 2950 struct qeth_cmd_buffer *iob; 2951 2952 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2953 2954 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2955 if (!iob) 2956 return -ENOMEM; 2957 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2958 return rc; 2959 } 2960 EXPORT_SYMBOL_GPL(qeth_send_startlan); 2961 2962 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 2963 struct qeth_reply *reply, unsigned long data) 2964 { 2965 struct qeth_ipa_cmd *cmd; 2966 2967 QETH_CARD_TEXT(card, 4, "defadpcb"); 2968 2969 cmd = (struct qeth_ipa_cmd *) data; 2970 if (cmd->hdr.return_code == 0) 2971 cmd->hdr.return_code = 2972 cmd->data.setadapterparms.hdr.return_code; 2973 return 0; 2974 } 2975 2976 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2977 struct qeth_reply *reply, unsigned long data) 2978 { 2979 struct qeth_ipa_cmd *cmd; 2980 2981 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2982 2983 cmd = (struct qeth_ipa_cmd *) data; 2984 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2985 card->info.link_type = 2986 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2987 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2988 } 2989 card->options.adp.supported_funcs = 2990 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2991 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 2992 } 2993 2994 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2995 __u32 command, __u32 cmdlen) 2996 { 2997 struct qeth_cmd_buffer *iob; 2998 struct qeth_ipa_cmd *cmd; 2999 3000 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3001 QETH_PROT_IPV4); 3002 if (iob) { 3003 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3004 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3005 cmd->data.setadapterparms.hdr.command_code = command; 3006 cmd->data.setadapterparms.hdr.used_total = 1; 3007 cmd->data.setadapterparms.hdr.seq_no = 1; 3008 } 3009 3010 return iob; 3011 } 3012 3013 int qeth_query_setadapterparms(struct qeth_card *card) 3014 { 3015 int rc; 3016 struct qeth_cmd_buffer *iob; 3017 3018 QETH_CARD_TEXT(card, 3, "queryadp"); 3019 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3020 sizeof(struct qeth_ipacmd_setadpparms)); 3021 if (!iob) 3022 return -ENOMEM; 3023 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3024 return rc; 3025 } 3026 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3027 3028 static int qeth_query_ipassists_cb(struct qeth_card *card, 3029 struct qeth_reply *reply, unsigned long data) 3030 { 3031 struct qeth_ipa_cmd *cmd; 3032 3033 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3034 3035 cmd = (struct qeth_ipa_cmd *) data; 3036 3037 switch (cmd->hdr.return_code) { 3038 case IPA_RC_NOTSUPP: 3039 case IPA_RC_L2_UNSUPPORTED_CMD: 3040 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3041 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3042 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3043 return -0; 3044 default: 3045 if (cmd->hdr.return_code) { 3046 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3047 "rc=%d\n", 3048 dev_name(&card->gdev->dev), 3049 cmd->hdr.return_code); 3050 return 0; 3051 } 3052 } 3053 3054 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3055 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3056 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3057 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3058 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3059 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3060 } else 3061 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3062 "\n", dev_name(&card->gdev->dev)); 3063 return 0; 3064 } 3065 3066 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3067 { 3068 int rc; 3069 struct qeth_cmd_buffer *iob; 3070 3071 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3072 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3073 if (!iob) 3074 return -ENOMEM; 3075 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3076 return rc; 3077 } 3078 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3079 3080 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3081 struct qeth_reply *reply, unsigned long data) 3082 { 3083 struct qeth_ipa_cmd *cmd; 3084 struct qeth_switch_info *sw_info; 3085 struct qeth_query_switch_attributes *attrs; 3086 3087 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3088 cmd = (struct qeth_ipa_cmd *) data; 3089 sw_info = (struct qeth_switch_info *)reply->param; 3090 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3091 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3092 sw_info->capabilities = attrs->capabilities; 3093 sw_info->settings = attrs->settings; 3094 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3095 sw_info->settings); 3096 } 3097 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3098 3099 return 0; 3100 } 3101 3102 int qeth_query_switch_attributes(struct qeth_card *card, 3103 struct qeth_switch_info *sw_info) 3104 { 3105 struct qeth_cmd_buffer *iob; 3106 3107 QETH_CARD_TEXT(card, 2, "qswiattr"); 3108 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3109 return -EOPNOTSUPP; 3110 if (!netif_carrier_ok(card->dev)) 3111 return -ENOMEDIUM; 3112 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3113 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3114 if (!iob) 3115 return -ENOMEM; 3116 return qeth_send_ipa_cmd(card, iob, 3117 qeth_query_switch_attributes_cb, sw_info); 3118 } 3119 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3120 3121 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3122 struct qeth_reply *reply, unsigned long data) 3123 { 3124 struct qeth_ipa_cmd *cmd; 3125 __u16 rc; 3126 3127 cmd = (struct qeth_ipa_cmd *)data; 3128 rc = cmd->hdr.return_code; 3129 if (rc) 3130 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3131 else 3132 card->info.diagass_support = cmd->data.diagass.ext; 3133 return 0; 3134 } 3135 3136 static int qeth_query_setdiagass(struct qeth_card *card) 3137 { 3138 struct qeth_cmd_buffer *iob; 3139 struct qeth_ipa_cmd *cmd; 3140 3141 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3142 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3143 if (!iob) 3144 return -ENOMEM; 3145 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3146 cmd->data.diagass.subcmd_len = 16; 3147 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3148 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3149 } 3150 3151 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3152 { 3153 unsigned long info = get_zeroed_page(GFP_KERNEL); 3154 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3155 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3156 struct ccw_dev_id ccwid; 3157 int level; 3158 3159 tid->chpid = card->info.chpid; 3160 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3161 tid->ssid = ccwid.ssid; 3162 tid->devno = ccwid.devno; 3163 if (!info) 3164 return; 3165 level = stsi(NULL, 0, 0, 0); 3166 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3167 tid->lparnr = info222->lpar_number; 3168 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3169 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3170 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3171 } 3172 free_page(info); 3173 return; 3174 } 3175 3176 static int qeth_hw_trap_cb(struct qeth_card *card, 3177 struct qeth_reply *reply, unsigned long data) 3178 { 3179 struct qeth_ipa_cmd *cmd; 3180 __u16 rc; 3181 3182 cmd = (struct qeth_ipa_cmd *)data; 3183 rc = cmd->hdr.return_code; 3184 if (rc) 3185 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3186 return 0; 3187 } 3188 3189 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3190 { 3191 struct qeth_cmd_buffer *iob; 3192 struct qeth_ipa_cmd *cmd; 3193 3194 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3195 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3196 if (!iob) 3197 return -ENOMEM; 3198 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3199 cmd->data.diagass.subcmd_len = 80; 3200 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3201 cmd->data.diagass.type = 1; 3202 cmd->data.diagass.action = action; 3203 switch (action) { 3204 case QETH_DIAGS_TRAP_ARM: 3205 cmd->data.diagass.options = 0x0003; 3206 cmd->data.diagass.ext = 0x00010000 + 3207 sizeof(struct qeth_trap_id); 3208 qeth_get_trap_id(card, 3209 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3210 break; 3211 case QETH_DIAGS_TRAP_DISARM: 3212 cmd->data.diagass.options = 0x0001; 3213 break; 3214 case QETH_DIAGS_TRAP_CAPTURE: 3215 break; 3216 } 3217 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3218 } 3219 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3220 3221 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf, 3222 unsigned int qdio_error, const char *dbftext) 3223 { 3224 if (qdio_error) { 3225 QETH_CARD_TEXT(card, 2, dbftext); 3226 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3227 buf->element[15].sflags); 3228 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3229 buf->element[14].sflags); 3230 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3231 if ((buf->element[15].sflags) == 0x12) { 3232 card->stats.rx_dropped++; 3233 return 0; 3234 } else 3235 return 1; 3236 } 3237 return 0; 3238 } 3239 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors); 3240 3241 static void qeth_buffer_reclaim_work(struct work_struct *work) 3242 { 3243 struct qeth_card *card = container_of(work, struct qeth_card, 3244 buffer_reclaim_work.work); 3245 3246 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3247 qeth_queue_input_buffer(card, card->reclaim_index); 3248 } 3249 3250 void qeth_queue_input_buffer(struct qeth_card *card, int index) 3251 { 3252 struct qeth_qdio_q *queue = card->qdio.in_q; 3253 struct list_head *lh; 3254 int count; 3255 int i; 3256 int rc; 3257 int newcount = 0; 3258 3259 count = (index < queue->next_buf_to_init)? 3260 card->qdio.in_buf_pool.buf_count - 3261 (queue->next_buf_to_init - index) : 3262 card->qdio.in_buf_pool.buf_count - 3263 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3264 /* only requeue at a certain threshold to avoid SIGAs */ 3265 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3266 for (i = queue->next_buf_to_init; 3267 i < queue->next_buf_to_init + count; ++i) { 3268 if (qeth_init_input_buffer(card, 3269 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3270 break; 3271 } else { 3272 newcount++; 3273 } 3274 } 3275 3276 if (newcount < count) { 3277 /* we are in memory shortage so we switch back to 3278 traditional skb allocation and drop packages */ 3279 atomic_set(&card->force_alloc_skb, 3); 3280 count = newcount; 3281 } else { 3282 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3283 } 3284 3285 if (!count) { 3286 i = 0; 3287 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3288 i++; 3289 if (i == card->qdio.in_buf_pool.buf_count) { 3290 QETH_CARD_TEXT(card, 2, "qsarbw"); 3291 card->reclaim_index = index; 3292 schedule_delayed_work( 3293 &card->buffer_reclaim_work, 3294 QETH_RECLAIM_WORK_TIME); 3295 } 3296 return; 3297 } 3298 3299 /* 3300 * according to old code it should be avoided to requeue all 3301 * 128 buffers in order to benefit from PCI avoidance. 3302 * this function keeps at least one buffer (the buffer at 3303 * 'index') un-requeued -> this buffer is the first buffer that 3304 * will be requeued the next time 3305 */ 3306 if (card->options.performance_stats) { 3307 card->perf_stats.inbound_do_qdio_cnt++; 3308 card->perf_stats.inbound_do_qdio_start_time = 3309 qeth_get_micros(); 3310 } 3311 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3312 queue->next_buf_to_init, count); 3313 if (card->options.performance_stats) 3314 card->perf_stats.inbound_do_qdio_time += 3315 qeth_get_micros() - 3316 card->perf_stats.inbound_do_qdio_start_time; 3317 if (rc) { 3318 QETH_CARD_TEXT(card, 2, "qinberr"); 3319 } 3320 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3321 QDIO_MAX_BUFFERS_PER_Q; 3322 } 3323 } 3324 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer); 3325 3326 static int qeth_handle_send_error(struct qeth_card *card, 3327 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3328 { 3329 int sbalf15 = buffer->buffer->element[15].sflags; 3330 3331 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3332 if (card->info.type == QETH_CARD_TYPE_IQD) { 3333 if (sbalf15 == 0) { 3334 qdio_err = 0; 3335 } else { 3336 qdio_err = 1; 3337 } 3338 } 3339 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3340 3341 if (!qdio_err) 3342 return QETH_SEND_ERROR_NONE; 3343 3344 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3345 return QETH_SEND_ERROR_RETRY; 3346 3347 QETH_CARD_TEXT(card, 1, "lnkfail"); 3348 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3349 (u16)qdio_err, (u8)sbalf15); 3350 return QETH_SEND_ERROR_LINK_FAILURE; 3351 } 3352 3353 /* 3354 * Switched to packing state if the number of used buffers on a queue 3355 * reaches a certain limit. 3356 */ 3357 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3358 { 3359 if (!queue->do_pack) { 3360 if (atomic_read(&queue->used_buffers) 3361 >= QETH_HIGH_WATERMARK_PACK){ 3362 /* switch non-PACKING -> PACKING */ 3363 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3364 if (queue->card->options.performance_stats) 3365 queue->card->perf_stats.sc_dp_p++; 3366 queue->do_pack = 1; 3367 } 3368 } 3369 } 3370 3371 /* 3372 * Switches from packing to non-packing mode. If there is a packing 3373 * buffer on the queue this buffer will be prepared to be flushed. 3374 * In that case 1 is returned to inform the caller. If no buffer 3375 * has to be flushed, zero is returned. 3376 */ 3377 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3378 { 3379 struct qeth_qdio_out_buffer *buffer; 3380 int flush_count = 0; 3381 3382 if (queue->do_pack) { 3383 if (atomic_read(&queue->used_buffers) 3384 <= QETH_LOW_WATERMARK_PACK) { 3385 /* switch PACKING -> non-PACKING */ 3386 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3387 if (queue->card->options.performance_stats) 3388 queue->card->perf_stats.sc_p_dp++; 3389 queue->do_pack = 0; 3390 /* flush packing buffers */ 3391 buffer = queue->bufs[queue->next_buf_to_fill]; 3392 if ((atomic_read(&buffer->state) == 3393 QETH_QDIO_BUF_EMPTY) && 3394 (buffer->next_element_to_fill > 0)) { 3395 atomic_set(&buffer->state, 3396 QETH_QDIO_BUF_PRIMED); 3397 flush_count++; 3398 queue->next_buf_to_fill = 3399 (queue->next_buf_to_fill + 1) % 3400 QDIO_MAX_BUFFERS_PER_Q; 3401 } 3402 } 3403 } 3404 return flush_count; 3405 } 3406 3407 3408 /* 3409 * Called to flush a packing buffer if no more pci flags are on the queue. 3410 * Checks if there is a packing buffer and prepares it to be flushed. 3411 * In that case returns 1, otherwise zero. 3412 */ 3413 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue) 3414 { 3415 struct qeth_qdio_out_buffer *buffer; 3416 3417 buffer = queue->bufs[queue->next_buf_to_fill]; 3418 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3419 (buffer->next_element_to_fill > 0)) { 3420 /* it's a packing buffer */ 3421 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3422 queue->next_buf_to_fill = 3423 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3424 return 1; 3425 } 3426 return 0; 3427 } 3428 3429 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3430 int count) 3431 { 3432 struct qeth_qdio_out_buffer *buf; 3433 int rc; 3434 int i; 3435 unsigned int qdio_flags; 3436 3437 for (i = index; i < index + count; ++i) { 3438 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3439 buf = queue->bufs[bidx]; 3440 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3441 SBAL_EFLAGS_LAST_ENTRY; 3442 3443 if (queue->bufstates) 3444 queue->bufstates[bidx].user = buf; 3445 3446 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3447 continue; 3448 3449 if (!queue->do_pack) { 3450 if ((atomic_read(&queue->used_buffers) >= 3451 (QETH_HIGH_WATERMARK_PACK - 3452 QETH_WATERMARK_PACK_FUZZ)) && 3453 !atomic_read(&queue->set_pci_flags_count)) { 3454 /* it's likely that we'll go to packing 3455 * mode soon */ 3456 atomic_inc(&queue->set_pci_flags_count); 3457 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3458 } 3459 } else { 3460 if (!atomic_read(&queue->set_pci_flags_count)) { 3461 /* 3462 * there's no outstanding PCI any more, so we 3463 * have to request a PCI to be sure the the PCI 3464 * will wake at some time in the future then we 3465 * can flush packed buffers that might still be 3466 * hanging around, which can happen if no 3467 * further send was requested by the stack 3468 */ 3469 atomic_inc(&queue->set_pci_flags_count); 3470 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3471 } 3472 } 3473 } 3474 3475 netif_trans_update(queue->card->dev); 3476 if (queue->card->options.performance_stats) { 3477 queue->card->perf_stats.outbound_do_qdio_cnt++; 3478 queue->card->perf_stats.outbound_do_qdio_start_time = 3479 qeth_get_micros(); 3480 } 3481 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3482 if (atomic_read(&queue->set_pci_flags_count)) 3483 qdio_flags |= QDIO_FLAG_PCI_OUT; 3484 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3485 queue->queue_no, index, count); 3486 if (queue->card->options.performance_stats) 3487 queue->card->perf_stats.outbound_do_qdio_time += 3488 qeth_get_micros() - 3489 queue->card->perf_stats.outbound_do_qdio_start_time; 3490 atomic_add(count, &queue->used_buffers); 3491 if (rc) { 3492 queue->card->stats.tx_errors += count; 3493 /* ignore temporary SIGA errors without busy condition */ 3494 if (rc == -ENOBUFS) 3495 return; 3496 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3497 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3498 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3499 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3500 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3501 3502 /* this must not happen under normal circumstances. if it 3503 * happens something is really wrong -> recover */ 3504 qeth_schedule_recovery(queue->card); 3505 return; 3506 } 3507 if (queue->card->options.performance_stats) 3508 queue->card->perf_stats.bufs_sent += count; 3509 } 3510 3511 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3512 { 3513 int index; 3514 int flush_cnt = 0; 3515 int q_was_packing = 0; 3516 3517 /* 3518 * check if weed have to switch to non-packing mode or if 3519 * we have to get a pci flag out on the queue 3520 */ 3521 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3522 !atomic_read(&queue->set_pci_flags_count)) { 3523 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3524 QETH_OUT_Q_UNLOCKED) { 3525 /* 3526 * If we get in here, there was no action in 3527 * do_send_packet. So, we check if there is a 3528 * packing buffer to be flushed here. 3529 */ 3530 netif_stop_queue(queue->card->dev); 3531 index = queue->next_buf_to_fill; 3532 q_was_packing = queue->do_pack; 3533 /* queue->do_pack may change */ 3534 barrier(); 3535 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3536 if (!flush_cnt && 3537 !atomic_read(&queue->set_pci_flags_count)) 3538 flush_cnt += 3539 qeth_flush_buffers_on_no_pci(queue); 3540 if (queue->card->options.performance_stats && 3541 q_was_packing) 3542 queue->card->perf_stats.bufs_sent_pack += 3543 flush_cnt; 3544 if (flush_cnt) 3545 qeth_flush_buffers(queue, index, flush_cnt); 3546 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3547 } 3548 } 3549 } 3550 3551 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3552 unsigned long card_ptr) 3553 { 3554 struct qeth_card *card = (struct qeth_card *)card_ptr; 3555 3556 if (card->dev && (card->dev->flags & IFF_UP)) 3557 napi_schedule(&card->napi); 3558 } 3559 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3560 3561 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3562 { 3563 int rc; 3564 3565 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3566 rc = -1; 3567 goto out; 3568 } else { 3569 if (card->options.cq == cq) { 3570 rc = 0; 3571 goto out; 3572 } 3573 3574 if (card->state != CARD_STATE_DOWN && 3575 card->state != CARD_STATE_RECOVER) { 3576 rc = -1; 3577 goto out; 3578 } 3579 3580 qeth_free_qdio_buffers(card); 3581 card->options.cq = cq; 3582 rc = 0; 3583 } 3584 out: 3585 return rc; 3586 3587 } 3588 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3589 3590 3591 static void qeth_qdio_cq_handler(struct qeth_card *card, 3592 unsigned int qdio_err, 3593 unsigned int queue, int first_element, int count) { 3594 struct qeth_qdio_q *cq = card->qdio.c_q; 3595 int i; 3596 int rc; 3597 3598 if (!qeth_is_cq(card, queue)) 3599 goto out; 3600 3601 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3602 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3603 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3604 3605 if (qdio_err) { 3606 netif_stop_queue(card->dev); 3607 qeth_schedule_recovery(card); 3608 goto out; 3609 } 3610 3611 if (card->options.performance_stats) { 3612 card->perf_stats.cq_cnt++; 3613 card->perf_stats.cq_start_time = qeth_get_micros(); 3614 } 3615 3616 for (i = first_element; i < first_element + count; ++i) { 3617 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3618 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3619 int e; 3620 3621 e = 0; 3622 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3623 buffer->element[e].addr) { 3624 unsigned long phys_aob_addr; 3625 3626 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3627 qeth_qdio_handle_aob(card, phys_aob_addr); 3628 buffer->element[e].addr = NULL; 3629 buffer->element[e].eflags = 0; 3630 buffer->element[e].sflags = 0; 3631 buffer->element[e].length = 0; 3632 3633 ++e; 3634 } 3635 3636 buffer->element[15].eflags = 0; 3637 buffer->element[15].sflags = 0; 3638 } 3639 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3640 card->qdio.c_q->next_buf_to_init, 3641 count); 3642 if (rc) { 3643 dev_warn(&card->gdev->dev, 3644 "QDIO reported an error, rc=%i\n", rc); 3645 QETH_CARD_TEXT(card, 2, "qcqherr"); 3646 } 3647 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3648 + count) % QDIO_MAX_BUFFERS_PER_Q; 3649 3650 netif_wake_queue(card->dev); 3651 3652 if (card->options.performance_stats) { 3653 int delta_t = qeth_get_micros(); 3654 delta_t -= card->perf_stats.cq_start_time; 3655 card->perf_stats.cq_time += delta_t; 3656 } 3657 out: 3658 return; 3659 } 3660 3661 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3662 unsigned int queue, int first_elem, int count, 3663 unsigned long card_ptr) 3664 { 3665 struct qeth_card *card = (struct qeth_card *)card_ptr; 3666 3667 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3668 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3669 3670 if (qeth_is_cq(card, queue)) 3671 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3672 else if (qdio_err) 3673 qeth_schedule_recovery(card); 3674 3675 3676 } 3677 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3678 3679 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3680 unsigned int qdio_error, int __queue, int first_element, 3681 int count, unsigned long card_ptr) 3682 { 3683 struct qeth_card *card = (struct qeth_card *) card_ptr; 3684 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3685 struct qeth_qdio_out_buffer *buffer; 3686 int i; 3687 3688 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3689 if (qdio_error & QDIO_ERROR_FATAL) { 3690 QETH_CARD_TEXT(card, 2, "achkcond"); 3691 netif_stop_queue(card->dev); 3692 qeth_schedule_recovery(card); 3693 return; 3694 } 3695 if (card->options.performance_stats) { 3696 card->perf_stats.outbound_handler_cnt++; 3697 card->perf_stats.outbound_handler_start_time = 3698 qeth_get_micros(); 3699 } 3700 for (i = first_element; i < (first_element + count); ++i) { 3701 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3702 buffer = queue->bufs[bidx]; 3703 qeth_handle_send_error(card, buffer, qdio_error); 3704 3705 if (queue->bufstates && 3706 (queue->bufstates[bidx].flags & 3707 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3708 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3709 3710 if (atomic_cmpxchg(&buffer->state, 3711 QETH_QDIO_BUF_PRIMED, 3712 QETH_QDIO_BUF_PENDING) == 3713 QETH_QDIO_BUF_PRIMED) { 3714 qeth_notify_skbs(queue, buffer, 3715 TX_NOTIFY_PENDING); 3716 } 3717 buffer->aob = queue->bufstates[bidx].aob; 3718 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3719 QETH_CARD_TEXT(queue->card, 5, "aob"); 3720 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3721 virt_to_phys(buffer->aob)); 3722 if (qeth_init_qdio_out_buf(queue, bidx)) { 3723 QETH_CARD_TEXT(card, 2, "outofbuf"); 3724 qeth_schedule_recovery(card); 3725 } 3726 } else { 3727 if (card->options.cq == QETH_CQ_ENABLED) { 3728 enum iucv_tx_notify n; 3729 3730 n = qeth_compute_cq_notification( 3731 buffer->buffer->element[15].sflags, 0); 3732 qeth_notify_skbs(queue, buffer, n); 3733 } 3734 3735 qeth_clear_output_buffer(queue, buffer, 3736 QETH_QDIO_BUF_EMPTY); 3737 } 3738 qeth_cleanup_handled_pending(queue, bidx, 0); 3739 } 3740 atomic_sub(count, &queue->used_buffers); 3741 /* check if we need to do something on this outbound queue */ 3742 if (card->info.type != QETH_CARD_TYPE_IQD) 3743 qeth_check_outbound_queue(queue); 3744 3745 netif_wake_queue(queue->card->dev); 3746 if (card->options.performance_stats) 3747 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3748 card->perf_stats.outbound_handler_start_time; 3749 } 3750 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3751 3752 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3753 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3754 { 3755 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3756 return 2; 3757 return queue_num; 3758 } 3759 3760 /** 3761 * Note: Function assumes that we have 4 outbound queues. 3762 */ 3763 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3764 int ipv, int cast_type) 3765 { 3766 __be16 *tci; 3767 u8 tos; 3768 3769 if (cast_type && card->info.is_multicast_different) 3770 return card->info.is_multicast_different & 3771 (card->qdio.no_out_queues - 1); 3772 3773 switch (card->qdio.do_prio_queueing) { 3774 case QETH_PRIO_Q_ING_TOS: 3775 case QETH_PRIO_Q_ING_PREC: 3776 switch (ipv) { 3777 case 4: 3778 tos = ipv4_get_dsfield(ip_hdr(skb)); 3779 break; 3780 case 6: 3781 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3782 break; 3783 default: 3784 return card->qdio.default_out_queue; 3785 } 3786 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3787 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3788 if (tos & IPTOS_MINCOST) 3789 return qeth_cut_iqd_prio(card, 3); 3790 if (tos & IPTOS_RELIABILITY) 3791 return 2; 3792 if (tos & IPTOS_THROUGHPUT) 3793 return 1; 3794 if (tos & IPTOS_LOWDELAY) 3795 return 0; 3796 break; 3797 case QETH_PRIO_Q_ING_SKB: 3798 if (skb->priority > 5) 3799 return 0; 3800 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3801 case QETH_PRIO_Q_ING_VLAN: 3802 tci = &((struct ethhdr *)skb->data)->h_proto; 3803 if (*tci == ETH_P_8021Q) 3804 return qeth_cut_iqd_prio(card, ~*(tci + 1) >> 3805 (VLAN_PRIO_SHIFT + 1) & 3); 3806 break; 3807 default: 3808 break; 3809 } 3810 return card->qdio.default_out_queue; 3811 } 3812 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3813 3814 /** 3815 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3816 * @skb: SKB address 3817 * 3818 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3819 * fragmented part of the SKB. Returns zero for linear SKB. 3820 */ 3821 int qeth_get_elements_for_frags(struct sk_buff *skb) 3822 { 3823 int cnt, elements = 0; 3824 3825 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3826 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3827 3828 elements += qeth_get_elements_for_range( 3829 (addr_t)skb_frag_address(frag), 3830 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3831 } 3832 return elements; 3833 } 3834 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3835 3836 /** 3837 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3838 * @card: qeth card structure, to check max. elems. 3839 * @skb: SKB address 3840 * @extra_elems: extra elems needed, to check against max. 3841 * 3842 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3843 * skb data, including linear part and fragments. Checks if the result plus 3844 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3845 * Note: extra_elems is not included in the returned result. 3846 */ 3847 int qeth_get_elements_no(struct qeth_card *card, 3848 struct sk_buff *skb, int extra_elems) 3849 { 3850 int elements = qeth_get_elements_for_range( 3851 (addr_t)skb->data, 3852 (addr_t)skb->data + skb_headlen(skb)) + 3853 qeth_get_elements_for_frags(skb); 3854 3855 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3856 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3857 "(Number=%d / Length=%d). Discarded.\n", 3858 elements + extra_elems, skb->len); 3859 return 0; 3860 } 3861 return elements; 3862 } 3863 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3864 3865 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3866 { 3867 int hroom, inpage, rest; 3868 3869 if (((unsigned long)skb->data & PAGE_MASK) != 3870 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3871 hroom = skb_headroom(skb); 3872 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3873 rest = len - inpage; 3874 if (rest > hroom) 3875 return 1; 3876 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3877 skb->data -= rest; 3878 skb->tail -= rest; 3879 *hdr = (struct qeth_hdr *)skb->data; 3880 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3881 } 3882 return 0; 3883 } 3884 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3885 3886 static inline void __qeth_fill_buffer(struct sk_buff *skb, 3887 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, 3888 int offset) 3889 { 3890 int length = skb_headlen(skb); 3891 int length_here; 3892 int element; 3893 char *data; 3894 int first_lap, cnt; 3895 struct skb_frag_struct *frag; 3896 3897 element = *next_element_to_fill; 3898 data = skb->data; 3899 first_lap = (is_tso == 0 ? 1 : 0); 3900 3901 if (offset >= 0) { 3902 data = skb->data + offset; 3903 length -= offset; 3904 first_lap = 0; 3905 } 3906 3907 while (length > 0) { 3908 /* length_here is the remaining amount of data in this page */ 3909 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3910 if (length < length_here) 3911 length_here = length; 3912 3913 buffer->element[element].addr = data; 3914 buffer->element[element].length = length_here; 3915 length -= length_here; 3916 if (!length) { 3917 if (first_lap) 3918 if (skb_shinfo(skb)->nr_frags) 3919 buffer->element[element].eflags = 3920 SBAL_EFLAGS_FIRST_FRAG; 3921 else 3922 buffer->element[element].eflags = 0; 3923 else 3924 buffer->element[element].eflags = 3925 SBAL_EFLAGS_MIDDLE_FRAG; 3926 } else { 3927 if (first_lap) 3928 buffer->element[element].eflags = 3929 SBAL_EFLAGS_FIRST_FRAG; 3930 else 3931 buffer->element[element].eflags = 3932 SBAL_EFLAGS_MIDDLE_FRAG; 3933 } 3934 data += length_here; 3935 element++; 3936 first_lap = 0; 3937 } 3938 3939 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3940 frag = &skb_shinfo(skb)->frags[cnt]; 3941 data = (char *)page_to_phys(skb_frag_page(frag)) + 3942 frag->page_offset; 3943 length = frag->size; 3944 while (length > 0) { 3945 length_here = PAGE_SIZE - 3946 ((unsigned long) data % PAGE_SIZE); 3947 if (length < length_here) 3948 length_here = length; 3949 3950 buffer->element[element].addr = data; 3951 buffer->element[element].length = length_here; 3952 buffer->element[element].eflags = 3953 SBAL_EFLAGS_MIDDLE_FRAG; 3954 length -= length_here; 3955 data += length_here; 3956 element++; 3957 } 3958 } 3959 3960 if (buffer->element[element - 1].eflags) 3961 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3962 *next_element_to_fill = element; 3963 } 3964 3965 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 3966 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, 3967 struct qeth_hdr *hdr, int offset, int hd_len) 3968 { 3969 struct qdio_buffer *buffer; 3970 int flush_cnt = 0, hdr_len, large_send = 0; 3971 3972 buffer = buf->buffer; 3973 atomic_inc(&skb->users); 3974 skb_queue_tail(&buf->skb_list, skb); 3975 3976 /*check first on TSO ....*/ 3977 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) { 3978 int element = buf->next_element_to_fill; 3979 3980 hdr_len = sizeof(struct qeth_hdr_tso) + 3981 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len; 3982 /*fill first buffer entry only with header information */ 3983 buffer->element[element].addr = skb->data; 3984 buffer->element[element].length = hdr_len; 3985 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3986 buf->next_element_to_fill++; 3987 skb->data += hdr_len; 3988 skb->len -= hdr_len; 3989 large_send = 1; 3990 } 3991 3992 if (offset >= 0) { 3993 int element = buf->next_element_to_fill; 3994 buffer->element[element].addr = hdr; 3995 buffer->element[element].length = sizeof(struct qeth_hdr) + 3996 hd_len; 3997 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3998 buf->is_header[element] = 1; 3999 buf->next_element_to_fill++; 4000 } 4001 4002 __qeth_fill_buffer(skb, buffer, large_send, 4003 (int *)&buf->next_element_to_fill, offset); 4004 4005 if (!queue->do_pack) { 4006 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4007 /* set state to PRIMED -> will be flushed */ 4008 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4009 flush_cnt = 1; 4010 } else { 4011 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4012 if (queue->card->options.performance_stats) 4013 queue->card->perf_stats.skbs_sent_pack++; 4014 if (buf->next_element_to_fill >= 4015 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4016 /* 4017 * packed buffer if full -> set state PRIMED 4018 * -> will be flushed 4019 */ 4020 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4021 flush_cnt = 1; 4022 } 4023 } 4024 return flush_cnt; 4025 } 4026 4027 int qeth_do_send_packet_fast(struct qeth_card *card, 4028 struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4029 struct qeth_hdr *hdr, int elements_needed, 4030 int offset, int hd_len) 4031 { 4032 struct qeth_qdio_out_buffer *buffer; 4033 int index; 4034 4035 /* spin until we get the queue ... */ 4036 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4037 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4038 /* ... now we've got the queue */ 4039 index = queue->next_buf_to_fill; 4040 buffer = queue->bufs[queue->next_buf_to_fill]; 4041 /* 4042 * check if buffer is empty to make sure that we do not 'overtake' 4043 * ourselves and try to fill a buffer that is already primed 4044 */ 4045 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4046 goto out; 4047 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % 4048 QDIO_MAX_BUFFERS_PER_Q; 4049 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4050 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4051 qeth_flush_buffers(queue, index, 1); 4052 return 0; 4053 out: 4054 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4055 return -EBUSY; 4056 } 4057 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4058 4059 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4060 struct sk_buff *skb, struct qeth_hdr *hdr, 4061 int elements_needed) 4062 { 4063 struct qeth_qdio_out_buffer *buffer; 4064 int start_index; 4065 int flush_count = 0; 4066 int do_pack = 0; 4067 int tmp; 4068 int rc = 0; 4069 4070 /* spin until we get the queue ... */ 4071 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4072 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4073 start_index = queue->next_buf_to_fill; 4074 buffer = queue->bufs[queue->next_buf_to_fill]; 4075 /* 4076 * check if buffer is empty to make sure that we do not 'overtake' 4077 * ourselves and try to fill a buffer that is already primed 4078 */ 4079 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4080 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4081 return -EBUSY; 4082 } 4083 /* check if we need to switch packing state of this queue */ 4084 qeth_switch_to_packing_if_needed(queue); 4085 if (queue->do_pack) { 4086 do_pack = 1; 4087 /* does packet fit in current buffer? */ 4088 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4089 buffer->next_element_to_fill) < elements_needed) { 4090 /* ... no -> set state PRIMED */ 4091 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4092 flush_count++; 4093 queue->next_buf_to_fill = 4094 (queue->next_buf_to_fill + 1) % 4095 QDIO_MAX_BUFFERS_PER_Q; 4096 buffer = queue->bufs[queue->next_buf_to_fill]; 4097 /* we did a step forward, so check buffer state 4098 * again */ 4099 if (atomic_read(&buffer->state) != 4100 QETH_QDIO_BUF_EMPTY) { 4101 qeth_flush_buffers(queue, start_index, 4102 flush_count); 4103 atomic_set(&queue->state, 4104 QETH_OUT_Q_UNLOCKED); 4105 return -EBUSY; 4106 } 4107 } 4108 } 4109 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0); 4110 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4111 QDIO_MAX_BUFFERS_PER_Q; 4112 flush_count += tmp; 4113 if (flush_count) 4114 qeth_flush_buffers(queue, start_index, flush_count); 4115 else if (!atomic_read(&queue->set_pci_flags_count)) 4116 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4117 /* 4118 * queue->state will go from LOCKED -> UNLOCKED or from 4119 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4120 * (switch packing state or flush buffer to get another pci flag out). 4121 * In that case we will enter this loop 4122 */ 4123 while (atomic_dec_return(&queue->state)) { 4124 flush_count = 0; 4125 start_index = queue->next_buf_to_fill; 4126 /* check if we can go back to non-packing state */ 4127 flush_count += qeth_switch_to_nonpacking_if_needed(queue); 4128 /* 4129 * check if we need to flush a packing buffer to get a pci 4130 * flag out on the queue 4131 */ 4132 if (!flush_count && !atomic_read(&queue->set_pci_flags_count)) 4133 flush_count += qeth_flush_buffers_on_no_pci(queue); 4134 if (flush_count) 4135 qeth_flush_buffers(queue, start_index, flush_count); 4136 } 4137 /* at this point the queue is UNLOCKED again */ 4138 if (queue->card->options.performance_stats && do_pack) 4139 queue->card->perf_stats.bufs_sent_pack += flush_count; 4140 4141 return rc; 4142 } 4143 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4144 4145 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4146 struct qeth_reply *reply, unsigned long data) 4147 { 4148 struct qeth_ipa_cmd *cmd; 4149 struct qeth_ipacmd_setadpparms *setparms; 4150 4151 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4152 4153 cmd = (struct qeth_ipa_cmd *) data; 4154 setparms = &(cmd->data.setadapterparms); 4155 4156 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4157 if (cmd->hdr.return_code) { 4158 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4159 setparms->data.mode = SET_PROMISC_MODE_OFF; 4160 } 4161 card->info.promisc_mode = setparms->data.mode; 4162 return 0; 4163 } 4164 4165 void qeth_setadp_promisc_mode(struct qeth_card *card) 4166 { 4167 enum qeth_ipa_promisc_modes mode; 4168 struct net_device *dev = card->dev; 4169 struct qeth_cmd_buffer *iob; 4170 struct qeth_ipa_cmd *cmd; 4171 4172 QETH_CARD_TEXT(card, 4, "setprom"); 4173 4174 if (((dev->flags & IFF_PROMISC) && 4175 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4176 (!(dev->flags & IFF_PROMISC) && 4177 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4178 return; 4179 mode = SET_PROMISC_MODE_OFF; 4180 if (dev->flags & IFF_PROMISC) 4181 mode = SET_PROMISC_MODE_ON; 4182 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4183 4184 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4185 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4186 if (!iob) 4187 return; 4188 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4189 cmd->data.setadapterparms.data.mode = mode; 4190 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4191 } 4192 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4193 4194 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4195 { 4196 struct qeth_card *card; 4197 char dbf_text[15]; 4198 4199 card = dev->ml_priv; 4200 4201 QETH_CARD_TEXT(card, 4, "chgmtu"); 4202 sprintf(dbf_text, "%8x", new_mtu); 4203 QETH_CARD_TEXT(card, 4, dbf_text); 4204 4205 if (new_mtu < 64) 4206 return -EINVAL; 4207 if (new_mtu > 65535) 4208 return -EINVAL; 4209 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) && 4210 (!qeth_mtu_is_valid(card, new_mtu))) 4211 return -EINVAL; 4212 dev->mtu = new_mtu; 4213 return 0; 4214 } 4215 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4216 4217 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4218 { 4219 struct qeth_card *card; 4220 4221 card = dev->ml_priv; 4222 4223 QETH_CARD_TEXT(card, 5, "getstat"); 4224 4225 return &card->stats; 4226 } 4227 EXPORT_SYMBOL_GPL(qeth_get_stats); 4228 4229 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4230 struct qeth_reply *reply, unsigned long data) 4231 { 4232 struct qeth_ipa_cmd *cmd; 4233 4234 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4235 4236 cmd = (struct qeth_ipa_cmd *) data; 4237 if (!card->options.layer2 || 4238 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4239 memcpy(card->dev->dev_addr, 4240 &cmd->data.setadapterparms.data.change_addr.addr, 4241 OSA_ADDR_LEN); 4242 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4243 } 4244 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4245 return 0; 4246 } 4247 4248 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4249 { 4250 int rc; 4251 struct qeth_cmd_buffer *iob; 4252 struct qeth_ipa_cmd *cmd; 4253 4254 QETH_CARD_TEXT(card, 4, "chgmac"); 4255 4256 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4257 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4258 sizeof(struct qeth_change_addr)); 4259 if (!iob) 4260 return -ENOMEM; 4261 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4262 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4263 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; 4264 memcpy(&cmd->data.setadapterparms.data.change_addr.addr, 4265 card->dev->dev_addr, OSA_ADDR_LEN); 4266 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4267 NULL); 4268 return rc; 4269 } 4270 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4271 4272 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4273 struct qeth_reply *reply, unsigned long data) 4274 { 4275 struct qeth_ipa_cmd *cmd; 4276 struct qeth_set_access_ctrl *access_ctrl_req; 4277 int fallback = *(int *)reply->param; 4278 4279 QETH_CARD_TEXT(card, 4, "setaccb"); 4280 4281 cmd = (struct qeth_ipa_cmd *) data; 4282 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4283 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4284 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4285 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4286 cmd->data.setadapterparms.hdr.return_code); 4287 if (cmd->data.setadapterparms.hdr.return_code != 4288 SET_ACCESS_CTRL_RC_SUCCESS) 4289 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4290 card->gdev->dev.kobj.name, 4291 access_ctrl_req->subcmd_code, 4292 cmd->data.setadapterparms.hdr.return_code); 4293 switch (cmd->data.setadapterparms.hdr.return_code) { 4294 case SET_ACCESS_CTRL_RC_SUCCESS: 4295 if (card->options.isolation == ISOLATION_MODE_NONE) { 4296 dev_info(&card->gdev->dev, 4297 "QDIO data connection isolation is deactivated\n"); 4298 } else { 4299 dev_info(&card->gdev->dev, 4300 "QDIO data connection isolation is activated\n"); 4301 } 4302 break; 4303 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4304 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4305 "deactivated\n", dev_name(&card->gdev->dev)); 4306 if (fallback) 4307 card->options.isolation = card->options.prev_isolation; 4308 break; 4309 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4310 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4311 " activated\n", dev_name(&card->gdev->dev)); 4312 if (fallback) 4313 card->options.isolation = card->options.prev_isolation; 4314 break; 4315 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4316 dev_err(&card->gdev->dev, "Adapter does not " 4317 "support QDIO data connection isolation\n"); 4318 break; 4319 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4320 dev_err(&card->gdev->dev, 4321 "Adapter is dedicated. " 4322 "QDIO data connection isolation not supported\n"); 4323 if (fallback) 4324 card->options.isolation = card->options.prev_isolation; 4325 break; 4326 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4327 dev_err(&card->gdev->dev, 4328 "TSO does not permit QDIO data connection isolation\n"); 4329 if (fallback) 4330 card->options.isolation = card->options.prev_isolation; 4331 break; 4332 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4333 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4334 "support reflective relay mode\n"); 4335 if (fallback) 4336 card->options.isolation = card->options.prev_isolation; 4337 break; 4338 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4339 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4340 "enabled at the adjacent switch port"); 4341 if (fallback) 4342 card->options.isolation = card->options.prev_isolation; 4343 break; 4344 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4345 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4346 "at the adjacent switch failed\n"); 4347 break; 4348 default: 4349 /* this should never happen */ 4350 if (fallback) 4351 card->options.isolation = card->options.prev_isolation; 4352 break; 4353 } 4354 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4355 return 0; 4356 } 4357 4358 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4359 enum qeth_ipa_isolation_modes isolation, int fallback) 4360 { 4361 int rc; 4362 struct qeth_cmd_buffer *iob; 4363 struct qeth_ipa_cmd *cmd; 4364 struct qeth_set_access_ctrl *access_ctrl_req; 4365 4366 QETH_CARD_TEXT(card, 4, "setacctl"); 4367 4368 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4369 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4370 4371 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4372 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4373 sizeof(struct qeth_set_access_ctrl)); 4374 if (!iob) 4375 return -ENOMEM; 4376 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4377 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4378 access_ctrl_req->subcmd_code = isolation; 4379 4380 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4381 &fallback); 4382 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4383 return rc; 4384 } 4385 4386 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4387 { 4388 int rc = 0; 4389 4390 QETH_CARD_TEXT(card, 4, "setactlo"); 4391 4392 if ((card->info.type == QETH_CARD_TYPE_OSD || 4393 card->info.type == QETH_CARD_TYPE_OSX) && 4394 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4395 rc = qeth_setadpparms_set_access_ctrl(card, 4396 card->options.isolation, fallback); 4397 if (rc) { 4398 QETH_DBF_MESSAGE(3, 4399 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4400 card->gdev->dev.kobj.name, 4401 rc); 4402 rc = -EOPNOTSUPP; 4403 } 4404 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4405 card->options.isolation = ISOLATION_MODE_NONE; 4406 4407 dev_err(&card->gdev->dev, "Adapter does not " 4408 "support QDIO data connection isolation\n"); 4409 rc = -EOPNOTSUPP; 4410 } 4411 return rc; 4412 } 4413 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4414 4415 void qeth_tx_timeout(struct net_device *dev) 4416 { 4417 struct qeth_card *card; 4418 4419 card = dev->ml_priv; 4420 QETH_CARD_TEXT(card, 4, "txtimeo"); 4421 card->stats.tx_errors++; 4422 qeth_schedule_recovery(card); 4423 } 4424 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4425 4426 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4427 { 4428 struct qeth_card *card = dev->ml_priv; 4429 int rc = 0; 4430 4431 switch (regnum) { 4432 case MII_BMCR: /* Basic mode control register */ 4433 rc = BMCR_FULLDPLX; 4434 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4435 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4436 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4437 rc |= BMCR_SPEED100; 4438 break; 4439 case MII_BMSR: /* Basic mode status register */ 4440 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4441 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4442 BMSR_100BASE4; 4443 break; 4444 case MII_PHYSID1: /* PHYS ID 1 */ 4445 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4446 dev->dev_addr[2]; 4447 rc = (rc >> 5) & 0xFFFF; 4448 break; 4449 case MII_PHYSID2: /* PHYS ID 2 */ 4450 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4451 break; 4452 case MII_ADVERTISE: /* Advertisement control reg */ 4453 rc = ADVERTISE_ALL; 4454 break; 4455 case MII_LPA: /* Link partner ability reg */ 4456 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4457 LPA_100BASE4 | LPA_LPACK; 4458 break; 4459 case MII_EXPANSION: /* Expansion register */ 4460 break; 4461 case MII_DCOUNTER: /* disconnect counter */ 4462 break; 4463 case MII_FCSCOUNTER: /* false carrier counter */ 4464 break; 4465 case MII_NWAYTEST: /* N-way auto-neg test register */ 4466 break; 4467 case MII_RERRCOUNTER: /* rx error counter */ 4468 rc = card->stats.rx_errors; 4469 break; 4470 case MII_SREVISION: /* silicon revision */ 4471 break; 4472 case MII_RESV1: /* reserved 1 */ 4473 break; 4474 case MII_LBRERROR: /* loopback, rx, bypass error */ 4475 break; 4476 case MII_PHYADDR: /* physical address */ 4477 break; 4478 case MII_RESV2: /* reserved 2 */ 4479 break; 4480 case MII_TPISTATUS: /* TPI status for 10mbps */ 4481 break; 4482 case MII_NCONFIG: /* network interface config */ 4483 break; 4484 default: 4485 break; 4486 } 4487 return rc; 4488 } 4489 EXPORT_SYMBOL_GPL(qeth_mdio_read); 4490 4491 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4492 struct qeth_cmd_buffer *iob, int len, 4493 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4494 unsigned long), 4495 void *reply_param) 4496 { 4497 u16 s1, s2; 4498 4499 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4500 4501 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4502 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4503 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4504 /* adjust PDU length fields in IPA_PDU_HEADER */ 4505 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4506 s2 = (u32) len; 4507 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4508 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4509 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4510 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4511 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4512 reply_cb, reply_param); 4513 } 4514 4515 static int qeth_snmp_command_cb(struct qeth_card *card, 4516 struct qeth_reply *reply, unsigned long sdata) 4517 { 4518 struct qeth_ipa_cmd *cmd; 4519 struct qeth_arp_query_info *qinfo; 4520 struct qeth_snmp_cmd *snmp; 4521 unsigned char *data; 4522 __u16 data_len; 4523 4524 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4525 4526 cmd = (struct qeth_ipa_cmd *) sdata; 4527 data = (unsigned char *)((char *)cmd - reply->offset); 4528 qinfo = (struct qeth_arp_query_info *) reply->param; 4529 snmp = &cmd->data.setadapterparms.data.snmp; 4530 4531 if (cmd->hdr.return_code) { 4532 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4533 return 0; 4534 } 4535 if (cmd->data.setadapterparms.hdr.return_code) { 4536 cmd->hdr.return_code = 4537 cmd->data.setadapterparms.hdr.return_code; 4538 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4539 return 0; 4540 } 4541 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4542 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4543 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4544 else 4545 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4546 4547 /* check if there is enough room in userspace */ 4548 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4549 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4550 cmd->hdr.return_code = IPA_RC_ENOMEM; 4551 return 0; 4552 } 4553 QETH_CARD_TEXT_(card, 4, "snore%i", 4554 cmd->data.setadapterparms.hdr.used_total); 4555 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4556 cmd->data.setadapterparms.hdr.seq_no); 4557 /*copy entries to user buffer*/ 4558 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4559 memcpy(qinfo->udata + qinfo->udata_offset, 4560 (char *)snmp, 4561 data_len + offsetof(struct qeth_snmp_cmd, data)); 4562 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4563 } else { 4564 memcpy(qinfo->udata + qinfo->udata_offset, 4565 (char *)&snmp->request, data_len); 4566 } 4567 qinfo->udata_offset += data_len; 4568 /* check if all replies received ... */ 4569 QETH_CARD_TEXT_(card, 4, "srtot%i", 4570 cmd->data.setadapterparms.hdr.used_total); 4571 QETH_CARD_TEXT_(card, 4, "srseq%i", 4572 cmd->data.setadapterparms.hdr.seq_no); 4573 if (cmd->data.setadapterparms.hdr.seq_no < 4574 cmd->data.setadapterparms.hdr.used_total) 4575 return 1; 4576 return 0; 4577 } 4578 4579 int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4580 { 4581 struct qeth_cmd_buffer *iob; 4582 struct qeth_ipa_cmd *cmd; 4583 struct qeth_snmp_ureq *ureq; 4584 unsigned int req_len; 4585 struct qeth_arp_query_info qinfo = {0, }; 4586 int rc = 0; 4587 4588 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4589 4590 if (card->info.guestlan) 4591 return -EOPNOTSUPP; 4592 4593 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4594 (!card->options.layer2)) { 4595 return -EOPNOTSUPP; 4596 } 4597 /* skip 4 bytes (data_len struct member) to get req_len */ 4598 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4599 return -EFAULT; 4600 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4601 sizeof(struct qeth_ipacmd_hdr) - 4602 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4603 return -EINVAL; 4604 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4605 if (IS_ERR(ureq)) { 4606 QETH_CARD_TEXT(card, 2, "snmpnome"); 4607 return PTR_ERR(ureq); 4608 } 4609 qinfo.udata_len = ureq->hdr.data_len; 4610 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4611 if (!qinfo.udata) { 4612 kfree(ureq); 4613 return -ENOMEM; 4614 } 4615 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4616 4617 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4618 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4619 if (!iob) { 4620 rc = -ENOMEM; 4621 goto out; 4622 } 4623 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4624 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4625 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4626 qeth_snmp_command_cb, (void *)&qinfo); 4627 if (rc) 4628 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4629 QETH_CARD_IFNAME(card), rc); 4630 else { 4631 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4632 rc = -EFAULT; 4633 } 4634 out: 4635 kfree(ureq); 4636 kfree(qinfo.udata); 4637 return rc; 4638 } 4639 EXPORT_SYMBOL_GPL(qeth_snmp_command); 4640 4641 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4642 struct qeth_reply *reply, unsigned long data) 4643 { 4644 struct qeth_ipa_cmd *cmd; 4645 struct qeth_qoat_priv *priv; 4646 char *resdata; 4647 int resdatalen; 4648 4649 QETH_CARD_TEXT(card, 3, "qoatcb"); 4650 4651 cmd = (struct qeth_ipa_cmd *)data; 4652 priv = (struct qeth_qoat_priv *)reply->param; 4653 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4654 resdata = (char *)data + 28; 4655 4656 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4657 cmd->hdr.return_code = IPA_RC_FFFF; 4658 return 0; 4659 } 4660 4661 memcpy((priv->buffer + priv->response_len), resdata, 4662 resdatalen); 4663 priv->response_len += resdatalen; 4664 4665 if (cmd->data.setadapterparms.hdr.seq_no < 4666 cmd->data.setadapterparms.hdr.used_total) 4667 return 1; 4668 return 0; 4669 } 4670 4671 int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4672 { 4673 int rc = 0; 4674 struct qeth_cmd_buffer *iob; 4675 struct qeth_ipa_cmd *cmd; 4676 struct qeth_query_oat *oat_req; 4677 struct qeth_query_oat_data oat_data; 4678 struct qeth_qoat_priv priv; 4679 void __user *tmp; 4680 4681 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4682 4683 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4684 rc = -EOPNOTSUPP; 4685 goto out; 4686 } 4687 4688 if (copy_from_user(&oat_data, udata, 4689 sizeof(struct qeth_query_oat_data))) { 4690 rc = -EFAULT; 4691 goto out; 4692 } 4693 4694 priv.buffer_len = oat_data.buffer_len; 4695 priv.response_len = 0; 4696 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4697 if (!priv.buffer) { 4698 rc = -ENOMEM; 4699 goto out; 4700 } 4701 4702 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4703 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4704 sizeof(struct qeth_query_oat)); 4705 if (!iob) { 4706 rc = -ENOMEM; 4707 goto out_free; 4708 } 4709 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4710 oat_req = &cmd->data.setadapterparms.data.query_oat; 4711 oat_req->subcmd_code = oat_data.command; 4712 4713 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4714 &priv); 4715 if (!rc) { 4716 if (is_compat_task()) 4717 tmp = compat_ptr(oat_data.ptr); 4718 else 4719 tmp = (void __user *)(unsigned long)oat_data.ptr; 4720 4721 if (copy_to_user(tmp, priv.buffer, 4722 priv.response_len)) { 4723 rc = -EFAULT; 4724 goto out_free; 4725 } 4726 4727 oat_data.response_len = priv.response_len; 4728 4729 if (copy_to_user(udata, &oat_data, 4730 sizeof(struct qeth_query_oat_data))) 4731 rc = -EFAULT; 4732 } else 4733 if (rc == IPA_RC_FFFF) 4734 rc = -EFAULT; 4735 4736 out_free: 4737 kfree(priv.buffer); 4738 out: 4739 return rc; 4740 } 4741 EXPORT_SYMBOL_GPL(qeth_query_oat_command); 4742 4743 static int qeth_query_card_info_cb(struct qeth_card *card, 4744 struct qeth_reply *reply, unsigned long data) 4745 { 4746 struct qeth_ipa_cmd *cmd; 4747 struct qeth_query_card_info *card_info; 4748 struct carrier_info *carrier_info; 4749 4750 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4751 carrier_info = (struct carrier_info *)reply->param; 4752 cmd = (struct qeth_ipa_cmd *)data; 4753 card_info = &cmd->data.setadapterparms.data.card_info; 4754 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4755 carrier_info->card_type = card_info->card_type; 4756 carrier_info->port_mode = card_info->port_mode; 4757 carrier_info->port_speed = card_info->port_speed; 4758 } 4759 4760 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4761 return 0; 4762 } 4763 4764 static int qeth_query_card_info(struct qeth_card *card, 4765 struct carrier_info *carrier_info) 4766 { 4767 struct qeth_cmd_buffer *iob; 4768 4769 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4770 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4771 return -EOPNOTSUPP; 4772 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4773 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4774 if (!iob) 4775 return -ENOMEM; 4776 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4777 (void *)carrier_info); 4778 } 4779 4780 static inline int qeth_get_qdio_q_format(struct qeth_card *card) 4781 { 4782 switch (card->info.type) { 4783 case QETH_CARD_TYPE_IQD: 4784 return 2; 4785 default: 4786 return 0; 4787 } 4788 } 4789 4790 static void qeth_determine_capabilities(struct qeth_card *card) 4791 { 4792 int rc; 4793 int length; 4794 char *prcd; 4795 struct ccw_device *ddev; 4796 int ddev_offline = 0; 4797 4798 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4799 ddev = CARD_DDEV(card); 4800 if (!ddev->online) { 4801 ddev_offline = 1; 4802 rc = ccw_device_set_online(ddev); 4803 if (rc) { 4804 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4805 goto out; 4806 } 4807 } 4808 4809 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4810 if (rc) { 4811 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4812 dev_name(&card->gdev->dev), rc); 4813 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4814 goto out_offline; 4815 } 4816 qeth_configure_unitaddr(card, prcd); 4817 if (ddev_offline) 4818 qeth_configure_blkt_default(card, prcd); 4819 kfree(prcd); 4820 4821 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4822 if (rc) 4823 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4824 4825 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4826 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1); 4827 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3); 4828 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4829 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4830 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4831 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4832 dev_info(&card->gdev->dev, 4833 "Completion Queueing supported\n"); 4834 } else { 4835 card->options.cq = QETH_CQ_NOTAVAILABLE; 4836 } 4837 4838 4839 out_offline: 4840 if (ddev_offline == 1) 4841 ccw_device_set_offline(ddev); 4842 out: 4843 return; 4844 } 4845 4846 static inline void qeth_qdio_establish_cq(struct qeth_card *card, 4847 struct qdio_buffer **in_sbal_ptrs, 4848 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) { 4849 int i; 4850 4851 if (card->options.cq == QETH_CQ_ENABLED) { 4852 int offset = QDIO_MAX_BUFFERS_PER_Q * 4853 (card->qdio.no_in_queues - 1); 4854 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1); 4855 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4856 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4857 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4858 } 4859 4860 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4861 } 4862 } 4863 4864 static int qeth_qdio_establish(struct qeth_card *card) 4865 { 4866 struct qdio_initialize init_data; 4867 char *qib_param_field; 4868 struct qdio_buffer **in_sbal_ptrs; 4869 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4870 struct qdio_buffer **out_sbal_ptrs; 4871 int i, j, k; 4872 int rc = 0; 4873 4874 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4875 4876 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4877 GFP_KERNEL); 4878 if (!qib_param_field) { 4879 rc = -ENOMEM; 4880 goto out_free_nothing; 4881 } 4882 4883 qeth_create_qib_param_field(card, qib_param_field); 4884 qeth_create_qib_param_field_blkt(card, qib_param_field); 4885 4886 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4887 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4888 GFP_KERNEL); 4889 if (!in_sbal_ptrs) { 4890 rc = -ENOMEM; 4891 goto out_free_qib_param; 4892 } 4893 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4894 in_sbal_ptrs[i] = (struct qdio_buffer *) 4895 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4896 } 4897 4898 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4899 GFP_KERNEL); 4900 if (!queue_start_poll) { 4901 rc = -ENOMEM; 4902 goto out_free_in_sbals; 4903 } 4904 for (i = 0; i < card->qdio.no_in_queues; ++i) 4905 queue_start_poll[i] = card->discipline->start_poll; 4906 4907 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4908 4909 out_sbal_ptrs = 4910 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 4911 sizeof(void *), GFP_KERNEL); 4912 if (!out_sbal_ptrs) { 4913 rc = -ENOMEM; 4914 goto out_free_queue_start_poll; 4915 } 4916 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4917 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4918 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4919 card->qdio.out_qs[i]->bufs[j]->buffer); 4920 } 4921 4922 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4923 init_data.cdev = CARD_DDEV(card); 4924 init_data.q_format = qeth_get_qdio_q_format(card); 4925 init_data.qib_param_field_format = 0; 4926 init_data.qib_param_field = qib_param_field; 4927 init_data.no_input_qs = card->qdio.no_in_queues; 4928 init_data.no_output_qs = card->qdio.no_out_queues; 4929 init_data.input_handler = card->discipline->input_handler; 4930 init_data.output_handler = card->discipline->output_handler; 4931 init_data.queue_start_poll_array = queue_start_poll; 4932 init_data.int_parm = (unsigned long) card; 4933 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4934 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4935 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4936 init_data.scan_threshold = 4937 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 4938 4939 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4940 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4941 rc = qdio_allocate(&init_data); 4942 if (rc) { 4943 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4944 goto out; 4945 } 4946 rc = qdio_establish(&init_data); 4947 if (rc) { 4948 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4949 qdio_free(CARD_DDEV(card)); 4950 } 4951 } 4952 4953 switch (card->options.cq) { 4954 case QETH_CQ_ENABLED: 4955 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4956 break; 4957 case QETH_CQ_DISABLED: 4958 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4959 break; 4960 default: 4961 break; 4962 } 4963 out: 4964 kfree(out_sbal_ptrs); 4965 out_free_queue_start_poll: 4966 kfree(queue_start_poll); 4967 out_free_in_sbals: 4968 kfree(in_sbal_ptrs); 4969 out_free_qib_param: 4970 kfree(qib_param_field); 4971 out_free_nothing: 4972 return rc; 4973 } 4974 4975 static void qeth_core_free_card(struct qeth_card *card) 4976 { 4977 4978 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 4979 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 4980 qeth_clean_channel(&card->read); 4981 qeth_clean_channel(&card->write); 4982 if (card->dev) 4983 free_netdev(card->dev); 4984 qeth_free_qdio_buffers(card); 4985 unregister_service_level(&card->qeth_service_level); 4986 kfree(card); 4987 } 4988 4989 void qeth_trace_features(struct qeth_card *card) 4990 { 4991 QETH_CARD_TEXT(card, 2, "features"); 4992 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 4993 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 4994 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 4995 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 4996 sizeof(card->info.diagass_support)); 4997 } 4998 EXPORT_SYMBOL_GPL(qeth_trace_features); 4999 5000 static struct ccw_device_id qeth_ids[] = { 5001 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5002 .driver_info = QETH_CARD_TYPE_OSD}, 5003 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5004 .driver_info = QETH_CARD_TYPE_IQD}, 5005 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5006 .driver_info = QETH_CARD_TYPE_OSN}, 5007 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5008 .driver_info = QETH_CARD_TYPE_OSM}, 5009 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5010 .driver_info = QETH_CARD_TYPE_OSX}, 5011 {}, 5012 }; 5013 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5014 5015 static struct ccw_driver qeth_ccw_driver = { 5016 .driver = { 5017 .owner = THIS_MODULE, 5018 .name = "qeth", 5019 }, 5020 .ids = qeth_ids, 5021 .probe = ccwgroup_probe_ccwdev, 5022 .remove = ccwgroup_remove_ccwdev, 5023 }; 5024 5025 int qeth_core_hardsetup_card(struct qeth_card *card) 5026 { 5027 int retries = 3; 5028 int rc; 5029 5030 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5031 atomic_set(&card->force_alloc_skb, 0); 5032 qeth_update_from_chp_desc(card); 5033 retry: 5034 if (retries < 3) 5035 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5036 dev_name(&card->gdev->dev)); 5037 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5038 ccw_device_set_offline(CARD_DDEV(card)); 5039 ccw_device_set_offline(CARD_WDEV(card)); 5040 ccw_device_set_offline(CARD_RDEV(card)); 5041 qdio_free(CARD_DDEV(card)); 5042 rc = ccw_device_set_online(CARD_RDEV(card)); 5043 if (rc) 5044 goto retriable; 5045 rc = ccw_device_set_online(CARD_WDEV(card)); 5046 if (rc) 5047 goto retriable; 5048 rc = ccw_device_set_online(CARD_DDEV(card)); 5049 if (rc) 5050 goto retriable; 5051 retriable: 5052 if (rc == -ERESTARTSYS) { 5053 QETH_DBF_TEXT(SETUP, 2, "break1"); 5054 return rc; 5055 } else if (rc) { 5056 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5057 if (--retries < 0) 5058 goto out; 5059 else 5060 goto retry; 5061 } 5062 qeth_determine_capabilities(card); 5063 qeth_init_tokens(card); 5064 qeth_init_func_level(card); 5065 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5066 if (rc == -ERESTARTSYS) { 5067 QETH_DBF_TEXT(SETUP, 2, "break2"); 5068 return rc; 5069 } else if (rc) { 5070 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5071 if (--retries < 0) 5072 goto out; 5073 else 5074 goto retry; 5075 } 5076 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5077 if (rc == -ERESTARTSYS) { 5078 QETH_DBF_TEXT(SETUP, 2, "break3"); 5079 return rc; 5080 } else if (rc) { 5081 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5082 if (--retries < 0) 5083 goto out; 5084 else 5085 goto retry; 5086 } 5087 card->read_or_write_problem = 0; 5088 rc = qeth_mpc_initialize(card); 5089 if (rc) { 5090 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5091 goto out; 5092 } 5093 5094 card->options.ipa4.supported_funcs = 0; 5095 card->options.ipa6.supported_funcs = 0; 5096 card->options.adp.supported_funcs = 0; 5097 card->options.sbp.supported_funcs = 0; 5098 card->info.diagass_support = 0; 5099 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5100 if (rc == -ENOMEM) 5101 goto out; 5102 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5103 rc = qeth_query_setadapterparms(card); 5104 if (rc < 0) { 5105 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5106 goto out; 5107 } 5108 } 5109 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5110 rc = qeth_query_setdiagass(card); 5111 if (rc < 0) { 5112 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5113 goto out; 5114 } 5115 } 5116 return 0; 5117 out: 5118 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5119 "an error on the device\n"); 5120 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5121 dev_name(&card->gdev->dev), rc); 5122 return rc; 5123 } 5124 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5125 5126 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer, 5127 struct qdio_buffer_element *element, 5128 struct sk_buff **pskb, int offset, int *pfrag, int data_len) 5129 { 5130 struct page *page = virt_to_page(element->addr); 5131 if (*pskb == NULL) { 5132 if (qethbuffer->rx_skb) { 5133 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */ 5134 *pskb = qethbuffer->rx_skb; 5135 qethbuffer->rx_skb = NULL; 5136 } else { 5137 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 5138 if (!(*pskb)) 5139 return -ENOMEM; 5140 } 5141 5142 skb_reserve(*pskb, ETH_HLEN); 5143 if (data_len <= QETH_RX_PULL_LEN) { 5144 memcpy(skb_put(*pskb, data_len), element->addr + offset, 5145 data_len); 5146 } else { 5147 get_page(page); 5148 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN), 5149 element->addr + offset, QETH_RX_PULL_LEN); 5150 skb_fill_page_desc(*pskb, *pfrag, page, 5151 offset + QETH_RX_PULL_LEN, 5152 data_len - QETH_RX_PULL_LEN); 5153 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN; 5154 (*pskb)->len += data_len - QETH_RX_PULL_LEN; 5155 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN; 5156 (*pfrag)++; 5157 } 5158 } else { 5159 get_page(page); 5160 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len); 5161 (*pskb)->data_len += data_len; 5162 (*pskb)->len += data_len; 5163 (*pskb)->truesize += data_len; 5164 (*pfrag)++; 5165 } 5166 5167 5168 return 0; 5169 } 5170 5171 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5172 { 5173 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5174 } 5175 5176 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5177 struct qeth_qdio_buffer *qethbuffer, 5178 struct qdio_buffer_element **__element, int *__offset, 5179 struct qeth_hdr **hdr) 5180 { 5181 struct qdio_buffer_element *element = *__element; 5182 struct qdio_buffer *buffer = qethbuffer->buffer; 5183 int offset = *__offset; 5184 struct sk_buff *skb = NULL; 5185 int skb_len = 0; 5186 void *data_ptr; 5187 int data_len; 5188 int headroom = 0; 5189 int use_rx_sg = 0; 5190 int frag = 0; 5191 5192 /* qeth_hdr must not cross element boundaries */ 5193 if (element->length < offset + sizeof(struct qeth_hdr)) { 5194 if (qeth_is_last_sbale(element)) 5195 return NULL; 5196 element++; 5197 offset = 0; 5198 if (element->length < sizeof(struct qeth_hdr)) 5199 return NULL; 5200 } 5201 *hdr = element->addr + offset; 5202 5203 offset += sizeof(struct qeth_hdr); 5204 switch ((*hdr)->hdr.l2.id) { 5205 case QETH_HEADER_TYPE_LAYER2: 5206 skb_len = (*hdr)->hdr.l2.pkt_length; 5207 break; 5208 case QETH_HEADER_TYPE_LAYER3: 5209 skb_len = (*hdr)->hdr.l3.length; 5210 headroom = ETH_HLEN; 5211 break; 5212 case QETH_HEADER_TYPE_OSN: 5213 skb_len = (*hdr)->hdr.osn.pdu_length; 5214 headroom = sizeof(struct qeth_hdr); 5215 break; 5216 default: 5217 break; 5218 } 5219 5220 if (!skb_len) 5221 return NULL; 5222 5223 if (((skb_len >= card->options.rx_sg_cb) && 5224 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5225 (!atomic_read(&card->force_alloc_skb))) || 5226 (card->options.cq == QETH_CQ_ENABLED)) { 5227 use_rx_sg = 1; 5228 } else { 5229 skb = dev_alloc_skb(skb_len + headroom); 5230 if (!skb) 5231 goto no_mem; 5232 if (headroom) 5233 skb_reserve(skb, headroom); 5234 } 5235 5236 data_ptr = element->addr + offset; 5237 while (skb_len) { 5238 data_len = min(skb_len, (int)(element->length - offset)); 5239 if (data_len) { 5240 if (use_rx_sg) { 5241 if (qeth_create_skb_frag(qethbuffer, element, 5242 &skb, offset, &frag, data_len)) 5243 goto no_mem; 5244 } else { 5245 memcpy(skb_put(skb, data_len), data_ptr, 5246 data_len); 5247 } 5248 } 5249 skb_len -= data_len; 5250 if (skb_len) { 5251 if (qeth_is_last_sbale(element)) { 5252 QETH_CARD_TEXT(card, 4, "unexeob"); 5253 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5254 dev_kfree_skb_any(skb); 5255 card->stats.rx_errors++; 5256 return NULL; 5257 } 5258 element++; 5259 offset = 0; 5260 data_ptr = element->addr; 5261 } else { 5262 offset += data_len; 5263 } 5264 } 5265 *__element = element; 5266 *__offset = offset; 5267 if (use_rx_sg && card->options.performance_stats) { 5268 card->perf_stats.sg_skbs_rx++; 5269 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5270 } 5271 return skb; 5272 no_mem: 5273 if (net_ratelimit()) { 5274 QETH_CARD_TEXT(card, 2, "noskbmem"); 5275 } 5276 card->stats.rx_dropped++; 5277 return NULL; 5278 } 5279 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5280 5281 int qeth_setassparms_cb(struct qeth_card *card, 5282 struct qeth_reply *reply, unsigned long data) 5283 { 5284 struct qeth_ipa_cmd *cmd; 5285 5286 QETH_CARD_TEXT(card, 4, "defadpcb"); 5287 5288 cmd = (struct qeth_ipa_cmd *) data; 5289 if (cmd->hdr.return_code == 0) { 5290 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5291 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5292 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5293 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5294 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5295 } 5296 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM && 5297 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 5298 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit; 5299 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask); 5300 } 5301 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM && 5302 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 5303 card->info.tx_csum_mask = 5304 cmd->data.setassparms.data.flags_32bit; 5305 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask); 5306 } 5307 5308 return 0; 5309 } 5310 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5311 5312 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5313 enum qeth_ipa_funcs ipa_func, 5314 __u16 cmd_code, __u16 len, 5315 enum qeth_prot_versions prot) 5316 { 5317 struct qeth_cmd_buffer *iob; 5318 struct qeth_ipa_cmd *cmd; 5319 5320 QETH_CARD_TEXT(card, 4, "getasscm"); 5321 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5322 5323 if (iob) { 5324 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5325 cmd->data.setassparms.hdr.assist_no = ipa_func; 5326 cmd->data.setassparms.hdr.length = 8 + len; 5327 cmd->data.setassparms.hdr.command_code = cmd_code; 5328 cmd->data.setassparms.hdr.return_code = 0; 5329 cmd->data.setassparms.hdr.seq_no = 0; 5330 } 5331 5332 return iob; 5333 } 5334 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5335 5336 int qeth_send_setassparms(struct qeth_card *card, 5337 struct qeth_cmd_buffer *iob, __u16 len, long data, 5338 int (*reply_cb)(struct qeth_card *, 5339 struct qeth_reply *, unsigned long), 5340 void *reply_param) 5341 { 5342 int rc; 5343 struct qeth_ipa_cmd *cmd; 5344 5345 QETH_CARD_TEXT(card, 4, "sendassp"); 5346 5347 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5348 if (len <= sizeof(__u32)) 5349 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5350 else /* (len > sizeof(__u32)) */ 5351 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5352 5353 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5354 return rc; 5355 } 5356 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5357 5358 int qeth_send_simple_setassparms(struct qeth_card *card, 5359 enum qeth_ipa_funcs ipa_func, 5360 __u16 cmd_code, long data) 5361 { 5362 int rc; 5363 int length = 0; 5364 struct qeth_cmd_buffer *iob; 5365 5366 QETH_CARD_TEXT(card, 4, "simassp4"); 5367 if (data) 5368 length = sizeof(__u32); 5369 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5370 length, QETH_PROT_IPV4); 5371 if (!iob) 5372 return -ENOMEM; 5373 rc = qeth_send_setassparms(card, iob, length, data, 5374 qeth_setassparms_cb, NULL); 5375 return rc; 5376 } 5377 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5378 5379 static void qeth_unregister_dbf_views(void) 5380 { 5381 int x; 5382 for (x = 0; x < QETH_DBF_INFOS; x++) { 5383 debug_unregister(qeth_dbf[x].id); 5384 qeth_dbf[x].id = NULL; 5385 } 5386 } 5387 5388 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5389 { 5390 char dbf_txt_buf[32]; 5391 va_list args; 5392 5393 if (!debug_level_enabled(id, level)) 5394 return; 5395 va_start(args, fmt); 5396 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5397 va_end(args); 5398 debug_text_event(id, level, dbf_txt_buf); 5399 } 5400 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5401 5402 static int qeth_register_dbf_views(void) 5403 { 5404 int ret; 5405 int x; 5406 5407 for (x = 0; x < QETH_DBF_INFOS; x++) { 5408 /* register the areas */ 5409 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5410 qeth_dbf[x].pages, 5411 qeth_dbf[x].areas, 5412 qeth_dbf[x].len); 5413 if (qeth_dbf[x].id == NULL) { 5414 qeth_unregister_dbf_views(); 5415 return -ENOMEM; 5416 } 5417 5418 /* register a view */ 5419 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5420 if (ret) { 5421 qeth_unregister_dbf_views(); 5422 return ret; 5423 } 5424 5425 /* set a passing level */ 5426 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5427 } 5428 5429 return 0; 5430 } 5431 5432 int qeth_core_load_discipline(struct qeth_card *card, 5433 enum qeth_discipline_id discipline) 5434 { 5435 int rc = 0; 5436 mutex_lock(&qeth_mod_mutex); 5437 switch (discipline) { 5438 case QETH_DISCIPLINE_LAYER3: 5439 card->discipline = try_then_request_module( 5440 symbol_get(qeth_l3_discipline), "qeth_l3"); 5441 break; 5442 case QETH_DISCIPLINE_LAYER2: 5443 card->discipline = try_then_request_module( 5444 symbol_get(qeth_l2_discipline), "qeth_l2"); 5445 break; 5446 } 5447 if (!card->discipline) { 5448 dev_err(&card->gdev->dev, "There is no kernel module to " 5449 "support discipline %d\n", discipline); 5450 rc = -EINVAL; 5451 } 5452 mutex_unlock(&qeth_mod_mutex); 5453 return rc; 5454 } 5455 5456 void qeth_core_free_discipline(struct qeth_card *card) 5457 { 5458 if (card->options.layer2) 5459 symbol_put(qeth_l2_discipline); 5460 else 5461 symbol_put(qeth_l3_discipline); 5462 card->discipline = NULL; 5463 } 5464 5465 static const struct device_type qeth_generic_devtype = { 5466 .name = "qeth_generic", 5467 .groups = qeth_generic_attr_groups, 5468 }; 5469 static const struct device_type qeth_osn_devtype = { 5470 .name = "qeth_osn", 5471 .groups = qeth_osn_attr_groups, 5472 }; 5473 5474 #define DBF_NAME_LEN 20 5475 5476 struct qeth_dbf_entry { 5477 char dbf_name[DBF_NAME_LEN]; 5478 debug_info_t *dbf_info; 5479 struct list_head dbf_list; 5480 }; 5481 5482 static LIST_HEAD(qeth_dbf_list); 5483 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5484 5485 static debug_info_t *qeth_get_dbf_entry(char *name) 5486 { 5487 struct qeth_dbf_entry *entry; 5488 debug_info_t *rc = NULL; 5489 5490 mutex_lock(&qeth_dbf_list_mutex); 5491 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5492 if (strcmp(entry->dbf_name, name) == 0) { 5493 rc = entry->dbf_info; 5494 break; 5495 } 5496 } 5497 mutex_unlock(&qeth_dbf_list_mutex); 5498 return rc; 5499 } 5500 5501 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5502 { 5503 struct qeth_dbf_entry *new_entry; 5504 5505 card->debug = debug_register(name, 2, 1, 8); 5506 if (!card->debug) { 5507 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5508 goto err; 5509 } 5510 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5511 goto err_dbg; 5512 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5513 if (!new_entry) 5514 goto err_dbg; 5515 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5516 new_entry->dbf_info = card->debug; 5517 mutex_lock(&qeth_dbf_list_mutex); 5518 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5519 mutex_unlock(&qeth_dbf_list_mutex); 5520 5521 return 0; 5522 5523 err_dbg: 5524 debug_unregister(card->debug); 5525 err: 5526 return -ENOMEM; 5527 } 5528 5529 static void qeth_clear_dbf_list(void) 5530 { 5531 struct qeth_dbf_entry *entry, *tmp; 5532 5533 mutex_lock(&qeth_dbf_list_mutex); 5534 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5535 list_del(&entry->dbf_list); 5536 debug_unregister(entry->dbf_info); 5537 kfree(entry); 5538 } 5539 mutex_unlock(&qeth_dbf_list_mutex); 5540 } 5541 5542 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5543 { 5544 struct qeth_card *card; 5545 struct device *dev; 5546 int rc; 5547 unsigned long flags; 5548 char dbf_name[DBF_NAME_LEN]; 5549 5550 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5551 5552 dev = &gdev->dev; 5553 if (!get_device(dev)) 5554 return -ENODEV; 5555 5556 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5557 5558 card = qeth_alloc_card(); 5559 if (!card) { 5560 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5561 rc = -ENOMEM; 5562 goto err_dev; 5563 } 5564 5565 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5566 dev_name(&gdev->dev)); 5567 card->debug = qeth_get_dbf_entry(dbf_name); 5568 if (!card->debug) { 5569 rc = qeth_add_dbf_entry(card, dbf_name); 5570 if (rc) 5571 goto err_card; 5572 } 5573 5574 card->read.ccwdev = gdev->cdev[0]; 5575 card->write.ccwdev = gdev->cdev[1]; 5576 card->data.ccwdev = gdev->cdev[2]; 5577 dev_set_drvdata(&gdev->dev, card); 5578 card->gdev = gdev; 5579 gdev->cdev[0]->handler = qeth_irq; 5580 gdev->cdev[1]->handler = qeth_irq; 5581 gdev->cdev[2]->handler = qeth_irq; 5582 5583 rc = qeth_determine_card_type(card); 5584 if (rc) { 5585 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5586 goto err_card; 5587 } 5588 rc = qeth_setup_card(card); 5589 if (rc) { 5590 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5591 goto err_card; 5592 } 5593 5594 if (card->info.type == QETH_CARD_TYPE_OSN) 5595 gdev->dev.type = &qeth_osn_devtype; 5596 else 5597 gdev->dev.type = &qeth_generic_devtype; 5598 5599 switch (card->info.type) { 5600 case QETH_CARD_TYPE_OSN: 5601 case QETH_CARD_TYPE_OSM: 5602 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2); 5603 if (rc) 5604 goto err_card; 5605 rc = card->discipline->setup(card->gdev); 5606 if (rc) 5607 goto err_disc; 5608 case QETH_CARD_TYPE_OSD: 5609 case QETH_CARD_TYPE_OSX: 5610 default: 5611 break; 5612 } 5613 5614 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5615 list_add_tail(&card->list, &qeth_core_card_list.list); 5616 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5617 5618 qeth_determine_capabilities(card); 5619 return 0; 5620 5621 err_disc: 5622 qeth_core_free_discipline(card); 5623 err_card: 5624 qeth_core_free_card(card); 5625 err_dev: 5626 put_device(dev); 5627 return rc; 5628 } 5629 5630 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5631 { 5632 unsigned long flags; 5633 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5634 5635 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5636 5637 if (card->discipline) { 5638 card->discipline->remove(gdev); 5639 qeth_core_free_discipline(card); 5640 } 5641 5642 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5643 list_del(&card->list); 5644 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5645 qeth_core_free_card(card); 5646 dev_set_drvdata(&gdev->dev, NULL); 5647 put_device(&gdev->dev); 5648 return; 5649 } 5650 5651 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5652 { 5653 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5654 int rc = 0; 5655 int def_discipline; 5656 5657 if (!card->discipline) { 5658 if (card->info.type == QETH_CARD_TYPE_IQD) 5659 def_discipline = QETH_DISCIPLINE_LAYER3; 5660 else 5661 def_discipline = QETH_DISCIPLINE_LAYER2; 5662 rc = qeth_core_load_discipline(card, def_discipline); 5663 if (rc) 5664 goto err; 5665 rc = card->discipline->setup(card->gdev); 5666 if (rc) 5667 goto err; 5668 } 5669 rc = card->discipline->set_online(gdev); 5670 err: 5671 return rc; 5672 } 5673 5674 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5675 { 5676 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5677 return card->discipline->set_offline(gdev); 5678 } 5679 5680 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5681 { 5682 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5683 if (card->discipline && card->discipline->shutdown) 5684 card->discipline->shutdown(gdev); 5685 } 5686 5687 static int qeth_core_prepare(struct ccwgroup_device *gdev) 5688 { 5689 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5690 if (card->discipline && card->discipline->prepare) 5691 return card->discipline->prepare(gdev); 5692 return 0; 5693 } 5694 5695 static void qeth_core_complete(struct ccwgroup_device *gdev) 5696 { 5697 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5698 if (card->discipline && card->discipline->complete) 5699 card->discipline->complete(gdev); 5700 } 5701 5702 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5703 { 5704 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5705 if (card->discipline && card->discipline->freeze) 5706 return card->discipline->freeze(gdev); 5707 return 0; 5708 } 5709 5710 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5711 { 5712 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5713 if (card->discipline && card->discipline->thaw) 5714 return card->discipline->thaw(gdev); 5715 return 0; 5716 } 5717 5718 static int qeth_core_restore(struct ccwgroup_device *gdev) 5719 { 5720 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5721 if (card->discipline && card->discipline->restore) 5722 return card->discipline->restore(gdev); 5723 return 0; 5724 } 5725 5726 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5727 .driver = { 5728 .owner = THIS_MODULE, 5729 .name = "qeth", 5730 }, 5731 .setup = qeth_core_probe_device, 5732 .remove = qeth_core_remove_device, 5733 .set_online = qeth_core_set_online, 5734 .set_offline = qeth_core_set_offline, 5735 .shutdown = qeth_core_shutdown, 5736 .prepare = qeth_core_prepare, 5737 .complete = qeth_core_complete, 5738 .freeze = qeth_core_freeze, 5739 .thaw = qeth_core_thaw, 5740 .restore = qeth_core_restore, 5741 }; 5742 5743 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv, 5744 const char *buf, size_t count) 5745 { 5746 int err; 5747 5748 err = ccwgroup_create_dev(qeth_core_root_dev, 5749 &qeth_core_ccwgroup_driver, 3, buf); 5750 5751 return err ? err : count; 5752 } 5753 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store); 5754 5755 static struct attribute *qeth_drv_attrs[] = { 5756 &driver_attr_group.attr, 5757 NULL, 5758 }; 5759 static struct attribute_group qeth_drv_attr_group = { 5760 .attrs = qeth_drv_attrs, 5761 }; 5762 static const struct attribute_group *qeth_drv_attr_groups[] = { 5763 &qeth_drv_attr_group, 5764 NULL, 5765 }; 5766 5767 static struct { 5768 const char str[ETH_GSTRING_LEN]; 5769 } qeth_ethtool_stats_keys[] = { 5770 /* 0 */{"rx skbs"}, 5771 {"rx buffers"}, 5772 {"tx skbs"}, 5773 {"tx buffers"}, 5774 {"tx skbs no packing"}, 5775 {"tx buffers no packing"}, 5776 {"tx skbs packing"}, 5777 {"tx buffers packing"}, 5778 {"tx sg skbs"}, 5779 {"tx sg frags"}, 5780 /* 10 */{"rx sg skbs"}, 5781 {"rx sg frags"}, 5782 {"rx sg page allocs"}, 5783 {"tx large kbytes"}, 5784 {"tx large count"}, 5785 {"tx pk state ch n->p"}, 5786 {"tx pk state ch p->n"}, 5787 {"tx pk watermark low"}, 5788 {"tx pk watermark high"}, 5789 {"queue 0 buffer usage"}, 5790 /* 20 */{"queue 1 buffer usage"}, 5791 {"queue 2 buffer usage"}, 5792 {"queue 3 buffer usage"}, 5793 {"rx poll time"}, 5794 {"rx poll count"}, 5795 {"rx do_QDIO time"}, 5796 {"rx do_QDIO count"}, 5797 {"tx handler time"}, 5798 {"tx handler count"}, 5799 {"tx time"}, 5800 /* 30 */{"tx count"}, 5801 {"tx do_QDIO time"}, 5802 {"tx do_QDIO count"}, 5803 {"tx csum"}, 5804 {"tx lin"}, 5805 {"tx linfail"}, 5806 {"cq handler count"}, 5807 {"cq handler time"} 5808 }; 5809 5810 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 5811 { 5812 switch (stringset) { 5813 case ETH_SS_STATS: 5814 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 5815 default: 5816 return -EINVAL; 5817 } 5818 } 5819 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 5820 5821 void qeth_core_get_ethtool_stats(struct net_device *dev, 5822 struct ethtool_stats *stats, u64 *data) 5823 { 5824 struct qeth_card *card = dev->ml_priv; 5825 data[0] = card->stats.rx_packets - 5826 card->perf_stats.initial_rx_packets; 5827 data[1] = card->perf_stats.bufs_rec; 5828 data[2] = card->stats.tx_packets - 5829 card->perf_stats.initial_tx_packets; 5830 data[3] = card->perf_stats.bufs_sent; 5831 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 5832 - card->perf_stats.skbs_sent_pack; 5833 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 5834 data[6] = card->perf_stats.skbs_sent_pack; 5835 data[7] = card->perf_stats.bufs_sent_pack; 5836 data[8] = card->perf_stats.sg_skbs_sent; 5837 data[9] = card->perf_stats.sg_frags_sent; 5838 data[10] = card->perf_stats.sg_skbs_rx; 5839 data[11] = card->perf_stats.sg_frags_rx; 5840 data[12] = card->perf_stats.sg_alloc_page_rx; 5841 data[13] = (card->perf_stats.large_send_bytes >> 10); 5842 data[14] = card->perf_stats.large_send_cnt; 5843 data[15] = card->perf_stats.sc_dp_p; 5844 data[16] = card->perf_stats.sc_p_dp; 5845 data[17] = QETH_LOW_WATERMARK_PACK; 5846 data[18] = QETH_HIGH_WATERMARK_PACK; 5847 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 5848 data[20] = (card->qdio.no_out_queues > 1) ? 5849 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 5850 data[21] = (card->qdio.no_out_queues > 2) ? 5851 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 5852 data[22] = (card->qdio.no_out_queues > 3) ? 5853 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 5854 data[23] = card->perf_stats.inbound_time; 5855 data[24] = card->perf_stats.inbound_cnt; 5856 data[25] = card->perf_stats.inbound_do_qdio_time; 5857 data[26] = card->perf_stats.inbound_do_qdio_cnt; 5858 data[27] = card->perf_stats.outbound_handler_time; 5859 data[28] = card->perf_stats.outbound_handler_cnt; 5860 data[29] = card->perf_stats.outbound_time; 5861 data[30] = card->perf_stats.outbound_cnt; 5862 data[31] = card->perf_stats.outbound_do_qdio_time; 5863 data[32] = card->perf_stats.outbound_do_qdio_cnt; 5864 data[33] = card->perf_stats.tx_csum; 5865 data[34] = card->perf_stats.tx_lin; 5866 data[35] = card->perf_stats.tx_linfail; 5867 data[36] = card->perf_stats.cq_cnt; 5868 data[37] = card->perf_stats.cq_time; 5869 } 5870 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 5871 5872 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 5873 { 5874 switch (stringset) { 5875 case ETH_SS_STATS: 5876 memcpy(data, &qeth_ethtool_stats_keys, 5877 sizeof(qeth_ethtool_stats_keys)); 5878 break; 5879 default: 5880 WARN_ON(1); 5881 break; 5882 } 5883 } 5884 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 5885 5886 void qeth_core_get_drvinfo(struct net_device *dev, 5887 struct ethtool_drvinfo *info) 5888 { 5889 struct qeth_card *card = dev->ml_priv; 5890 5891 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 5892 sizeof(info->driver)); 5893 strlcpy(info->version, "1.0", sizeof(info->version)); 5894 strlcpy(info->fw_version, card->info.mcl_level, 5895 sizeof(info->fw_version)); 5896 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 5897 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 5898 } 5899 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 5900 5901 /* Helper function to fill 'advertizing' and 'supported' which are the same. */ 5902 /* Autoneg and full-duplex are supported and advertized uncondionally. */ 5903 /* Always advertize and support all speeds up to specified, and only one */ 5904 /* specified port type. */ 5905 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd, 5906 int maxspeed, int porttype) 5907 { 5908 int port_sup, port_adv, spd_sup, spd_adv; 5909 5910 switch (porttype) { 5911 case PORT_TP: 5912 port_sup = SUPPORTED_TP; 5913 port_adv = ADVERTISED_TP; 5914 break; 5915 case PORT_FIBRE: 5916 port_sup = SUPPORTED_FIBRE; 5917 port_adv = ADVERTISED_FIBRE; 5918 break; 5919 default: 5920 port_sup = SUPPORTED_TP; 5921 port_adv = ADVERTISED_TP; 5922 WARN_ON_ONCE(1); 5923 } 5924 5925 /* "Fallthrough" case'es ordered from high to low result in setting */ 5926 /* flags cumulatively, starting from the specified speed and down to */ 5927 /* the lowest possible. */ 5928 spd_sup = 0; 5929 spd_adv = 0; 5930 switch (maxspeed) { 5931 case SPEED_10000: 5932 spd_sup |= SUPPORTED_10000baseT_Full; 5933 spd_adv |= ADVERTISED_10000baseT_Full; 5934 case SPEED_1000: 5935 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; 5936 spd_adv |= ADVERTISED_1000baseT_Half | 5937 ADVERTISED_1000baseT_Full; 5938 case SPEED_100: 5939 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; 5940 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; 5941 case SPEED_10: 5942 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 5943 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; 5944 break; 5945 default: 5946 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 5947 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; 5948 WARN_ON_ONCE(1); 5949 } 5950 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv; 5951 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup; 5952 } 5953 5954 int qeth_core_ethtool_get_settings(struct net_device *netdev, 5955 struct ethtool_cmd *ecmd) 5956 { 5957 struct qeth_card *card = netdev->ml_priv; 5958 enum qeth_link_types link_type; 5959 struct carrier_info carrier_info; 5960 int rc; 5961 u32 speed; 5962 5963 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 5964 link_type = QETH_LINK_TYPE_10GBIT_ETH; 5965 else 5966 link_type = card->info.link_type; 5967 5968 ecmd->transceiver = XCVR_INTERNAL; 5969 ecmd->duplex = DUPLEX_FULL; 5970 ecmd->autoneg = AUTONEG_ENABLE; 5971 5972 switch (link_type) { 5973 case QETH_LINK_TYPE_FAST_ETH: 5974 case QETH_LINK_TYPE_LANE_ETH100: 5975 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP); 5976 speed = SPEED_100; 5977 ecmd->port = PORT_TP; 5978 break; 5979 5980 case QETH_LINK_TYPE_GBIT_ETH: 5981 case QETH_LINK_TYPE_LANE_ETH1000: 5982 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE); 5983 speed = SPEED_1000; 5984 ecmd->port = PORT_FIBRE; 5985 break; 5986 5987 case QETH_LINK_TYPE_10GBIT_ETH: 5988 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE); 5989 speed = SPEED_10000; 5990 ecmd->port = PORT_FIBRE; 5991 break; 5992 5993 default: 5994 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP); 5995 speed = SPEED_10; 5996 ecmd->port = PORT_TP; 5997 } 5998 ethtool_cmd_speed_set(ecmd, speed); 5999 6000 /* Check if we can obtain more accurate information. */ 6001 /* If QUERY_CARD_INFO command is not supported or fails, */ 6002 /* just return the heuristics that was filled above. */ 6003 if (!qeth_card_hw_is_reachable(card)) 6004 return -ENODEV; 6005 rc = qeth_query_card_info(card, &carrier_info); 6006 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6007 return 0; 6008 if (rc) /* report error from the hardware operation */ 6009 return rc; 6010 /* on success, fill in the information got from the hardware */ 6011 6012 netdev_dbg(netdev, 6013 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6014 carrier_info.card_type, 6015 carrier_info.port_mode, 6016 carrier_info.port_speed); 6017 6018 /* Update attributes for which we've obtained more authoritative */ 6019 /* information, leave the rest the way they where filled above. */ 6020 switch (carrier_info.card_type) { 6021 case CARD_INFO_TYPE_1G_COPPER_A: 6022 case CARD_INFO_TYPE_1G_COPPER_B: 6023 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP); 6024 ecmd->port = PORT_TP; 6025 break; 6026 case CARD_INFO_TYPE_1G_FIBRE_A: 6027 case CARD_INFO_TYPE_1G_FIBRE_B: 6028 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE); 6029 ecmd->port = PORT_FIBRE; 6030 break; 6031 case CARD_INFO_TYPE_10G_FIBRE_A: 6032 case CARD_INFO_TYPE_10G_FIBRE_B: 6033 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE); 6034 ecmd->port = PORT_FIBRE; 6035 break; 6036 } 6037 6038 switch (carrier_info.port_mode) { 6039 case CARD_INFO_PORTM_FULLDUPLEX: 6040 ecmd->duplex = DUPLEX_FULL; 6041 break; 6042 case CARD_INFO_PORTM_HALFDUPLEX: 6043 ecmd->duplex = DUPLEX_HALF; 6044 break; 6045 } 6046 6047 switch (carrier_info.port_speed) { 6048 case CARD_INFO_PORTS_10M: 6049 speed = SPEED_10; 6050 break; 6051 case CARD_INFO_PORTS_100M: 6052 speed = SPEED_100; 6053 break; 6054 case CARD_INFO_PORTS_1G: 6055 speed = SPEED_1000; 6056 break; 6057 case CARD_INFO_PORTS_10G: 6058 speed = SPEED_10000; 6059 break; 6060 } 6061 ethtool_cmd_speed_set(ecmd, speed); 6062 6063 return 0; 6064 } 6065 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings); 6066 6067 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6068 { 6069 long rxtx_arg; 6070 int rc; 6071 6072 rc = qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_START, 0); 6073 if (rc) { 6074 dev_warn(&card->gdev->dev, 6075 "Starting HW checksumming for %s failed, using SW checksumming\n", 6076 QETH_CARD_IFNAME(card)); 6077 return rc; 6078 } 6079 rxtx_arg = (cstype == IPA_OUTBOUND_CHECKSUM) ? card->info.tx_csum_mask 6080 : card->info.csum_mask; 6081 rc = qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_ENABLE, 6082 rxtx_arg); 6083 if (rc) { 6084 dev_warn(&card->gdev->dev, 6085 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6086 QETH_CARD_IFNAME(card)); 6087 return rc; 6088 } 6089 6090 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6091 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6092 return 0; 6093 } 6094 6095 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6096 { 6097 int rc; 6098 6099 if (on) { 6100 rc = qeth_send_checksum_on(card, cstype); 6101 if (rc) 6102 return -EIO; 6103 } else { 6104 rc = qeth_send_simple_setassparms(card, cstype, 6105 IPA_CMD_ASS_STOP, 0); 6106 if (rc) 6107 return -EIO; 6108 } 6109 return 0; 6110 } 6111 6112 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6113 { 6114 int rc; 6115 6116 QETH_CARD_TEXT(card, 3, "sttso"); 6117 6118 if (on) { 6119 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6120 IPA_CMD_ASS_START, 0); 6121 if (rc) { 6122 dev_warn(&card->gdev->dev, 6123 "Starting outbound TCP segmentation offload for %s failed\n", 6124 QETH_CARD_IFNAME(card)); 6125 return -EIO; 6126 } 6127 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6128 } else { 6129 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6130 IPA_CMD_ASS_STOP, 0); 6131 } 6132 return rc; 6133 } 6134 6135 /* try to restore device features on a device after recovery */ 6136 int qeth_recover_features(struct net_device *dev) 6137 { 6138 struct qeth_card *card = dev->ml_priv; 6139 netdev_features_t recover = dev->features; 6140 6141 if (recover & NETIF_F_IP_CSUM) { 6142 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM)) 6143 recover ^= NETIF_F_IP_CSUM; 6144 } 6145 if (recover & NETIF_F_RXCSUM) { 6146 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM)) 6147 recover ^= NETIF_F_RXCSUM; 6148 } 6149 if (recover & NETIF_F_TSO) { 6150 if (qeth_set_ipa_tso(card, 1)) 6151 recover ^= NETIF_F_TSO; 6152 } 6153 6154 if (recover == dev->features) 6155 return 0; 6156 6157 dev_warn(&card->gdev->dev, 6158 "Device recovery failed to restore all offload features\n"); 6159 dev->features = recover; 6160 return -EIO; 6161 } 6162 EXPORT_SYMBOL_GPL(qeth_recover_features); 6163 6164 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6165 { 6166 struct qeth_card *card = dev->ml_priv; 6167 netdev_features_t changed = dev->features ^ features; 6168 int rc = 0; 6169 6170 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6171 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6172 6173 if ((changed & NETIF_F_IP_CSUM)) { 6174 rc = qeth_set_ipa_csum(card, 6175 features & NETIF_F_IP_CSUM ? 1 : 0, 6176 IPA_OUTBOUND_CHECKSUM); 6177 if (rc) 6178 changed ^= NETIF_F_IP_CSUM; 6179 } 6180 if ((changed & NETIF_F_RXCSUM)) { 6181 rc = qeth_set_ipa_csum(card, 6182 features & NETIF_F_RXCSUM ? 1 : 0, 6183 IPA_INBOUND_CHECKSUM); 6184 if (rc) 6185 changed ^= NETIF_F_RXCSUM; 6186 } 6187 if ((changed & NETIF_F_TSO)) { 6188 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6189 if (rc) 6190 changed ^= NETIF_F_TSO; 6191 } 6192 6193 /* everything changed successfully? */ 6194 if ((dev->features ^ features) == changed) 6195 return 0; 6196 /* something went wrong. save changed features and return error */ 6197 dev->features ^= changed; 6198 return -EIO; 6199 } 6200 EXPORT_SYMBOL_GPL(qeth_set_features); 6201 6202 netdev_features_t qeth_fix_features(struct net_device *dev, 6203 netdev_features_t features) 6204 { 6205 struct qeth_card *card = dev->ml_priv; 6206 6207 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6208 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6209 features &= ~NETIF_F_IP_CSUM; 6210 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6211 features &= ~NETIF_F_RXCSUM; 6212 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 6213 features &= ~NETIF_F_TSO; 6214 dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n", 6215 QETH_CARD_IFNAME(card)); 6216 } 6217 /* if the card isn't up, remove features that require hw changes */ 6218 if (card->state == CARD_STATE_DOWN || 6219 card->state == CARD_STATE_RECOVER) 6220 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 6221 NETIF_F_TSO); 6222 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6223 return features; 6224 } 6225 EXPORT_SYMBOL_GPL(qeth_fix_features); 6226 6227 static int __init qeth_core_init(void) 6228 { 6229 int rc; 6230 6231 pr_info("loading core functions\n"); 6232 INIT_LIST_HEAD(&qeth_core_card_list.list); 6233 INIT_LIST_HEAD(&qeth_dbf_list); 6234 rwlock_init(&qeth_core_card_list.rwlock); 6235 mutex_init(&qeth_mod_mutex); 6236 6237 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6238 6239 rc = qeth_register_dbf_views(); 6240 if (rc) 6241 goto out_err; 6242 qeth_core_root_dev = root_device_register("qeth"); 6243 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6244 if (rc) 6245 goto register_err; 6246 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6247 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6248 if (!qeth_core_header_cache) { 6249 rc = -ENOMEM; 6250 goto slab_err; 6251 } 6252 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6253 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6254 if (!qeth_qdio_outbuf_cache) { 6255 rc = -ENOMEM; 6256 goto cqslab_err; 6257 } 6258 rc = ccw_driver_register(&qeth_ccw_driver); 6259 if (rc) 6260 goto ccw_err; 6261 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6262 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6263 if (rc) 6264 goto ccwgroup_err; 6265 6266 return 0; 6267 6268 ccwgroup_err: 6269 ccw_driver_unregister(&qeth_ccw_driver); 6270 ccw_err: 6271 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6272 cqslab_err: 6273 kmem_cache_destroy(qeth_core_header_cache); 6274 slab_err: 6275 root_device_unregister(qeth_core_root_dev); 6276 register_err: 6277 qeth_unregister_dbf_views(); 6278 out_err: 6279 pr_err("Initializing the qeth device driver failed\n"); 6280 return rc; 6281 } 6282 6283 static void __exit qeth_core_exit(void) 6284 { 6285 qeth_clear_dbf_list(); 6286 destroy_workqueue(qeth_wq); 6287 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6288 ccw_driver_unregister(&qeth_ccw_driver); 6289 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6290 kmem_cache_destroy(qeth_core_header_cache); 6291 root_device_unregister(qeth_core_root_dev); 6292 qeth_unregister_dbf_views(); 6293 pr_info("core functions removed\n"); 6294 } 6295 6296 module_init(qeth_core_init); 6297 module_exit(qeth_core_exit); 6298 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6299 MODULE_DESCRIPTION("qeth core functions"); 6300 MODULE_LICENSE("GPL"); 6301