1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/compat.h> 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/string.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/ip.h> 20 #include <linux/tcp.h> 21 #include <linux/mii.h> 22 #include <linux/kthread.h> 23 #include <linux/slab.h> 24 #include <linux/if_vlan.h> 25 #include <linux/netdevice.h> 26 #include <linux/netdev_features.h> 27 #include <linux/skbuff.h> 28 29 #include <net/iucv/af_iucv.h> 30 #include <net/dsfield.h> 31 32 #include <asm/ebcdic.h> 33 #include <asm/chpid.h> 34 #include <asm/io.h> 35 #include <asm/sysinfo.h> 36 #include <asm/diag.h> 37 #include <asm/cio.h> 38 #include <asm/ccwdev.h> 39 #include <asm/cpcmd.h> 40 41 #include "qeth_core.h" 42 43 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 44 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 45 /* N P A M L V H */ 46 [QETH_DBF_SETUP] = {"qeth_setup", 47 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 48 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 49 &debug_sprintf_view, NULL}, 50 [QETH_DBF_CTRL] = {"qeth_control", 51 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 52 }; 53 EXPORT_SYMBOL_GPL(qeth_dbf); 54 55 struct qeth_card_list_struct qeth_core_card_list; 56 EXPORT_SYMBOL_GPL(qeth_core_card_list); 57 struct kmem_cache *qeth_core_header_cache; 58 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 59 static struct kmem_cache *qeth_qdio_outbuf_cache; 60 61 static struct device *qeth_core_root_dev; 62 static struct lock_class_key qdio_out_skb_queue_key; 63 static struct mutex qeth_mod_mutex; 64 65 static void qeth_send_control_data_cb(struct qeth_channel *, 66 struct qeth_cmd_buffer *); 67 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 68 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 69 static void qeth_free_buffer_pool(struct qeth_card *); 70 static int qeth_qdio_establish(struct qeth_card *); 71 static void qeth_free_qdio_buffers(struct qeth_card *); 72 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 73 struct qeth_qdio_out_buffer *buf, 74 enum iucv_tx_notify notification); 75 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 76 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 77 78 struct workqueue_struct *qeth_wq; 79 EXPORT_SYMBOL_GPL(qeth_wq); 80 81 int qeth_card_hw_is_reachable(struct qeth_card *card) 82 { 83 return (card->state == CARD_STATE_SOFTSETUP) || 84 (card->state == CARD_STATE_UP); 85 } 86 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 87 88 static void qeth_close_dev_handler(struct work_struct *work) 89 { 90 struct qeth_card *card; 91 92 card = container_of(work, struct qeth_card, close_dev_work); 93 QETH_CARD_TEXT(card, 2, "cldevhdl"); 94 rtnl_lock(); 95 dev_close(card->dev); 96 rtnl_unlock(); 97 ccwgroup_set_offline(card->gdev); 98 } 99 100 void qeth_close_dev(struct qeth_card *card) 101 { 102 QETH_CARD_TEXT(card, 2, "cldevsubm"); 103 queue_work(qeth_wq, &card->close_dev_work); 104 } 105 EXPORT_SYMBOL_GPL(qeth_close_dev); 106 107 static const char *qeth_get_cardname(struct qeth_card *card) 108 { 109 if (card->info.guestlan) { 110 switch (card->info.type) { 111 case QETH_CARD_TYPE_OSD: 112 return " Virtual NIC QDIO"; 113 case QETH_CARD_TYPE_IQD: 114 return " Virtual NIC Hiper"; 115 case QETH_CARD_TYPE_OSM: 116 return " Virtual NIC QDIO - OSM"; 117 case QETH_CARD_TYPE_OSX: 118 return " Virtual NIC QDIO - OSX"; 119 default: 120 return " unknown"; 121 } 122 } else { 123 switch (card->info.type) { 124 case QETH_CARD_TYPE_OSD: 125 return " OSD Express"; 126 case QETH_CARD_TYPE_IQD: 127 return " HiperSockets"; 128 case QETH_CARD_TYPE_OSN: 129 return " OSN QDIO"; 130 case QETH_CARD_TYPE_OSM: 131 return " OSM QDIO"; 132 case QETH_CARD_TYPE_OSX: 133 return " OSX QDIO"; 134 default: 135 return " unknown"; 136 } 137 } 138 return " n/a"; 139 } 140 141 /* max length to be returned: 14 */ 142 const char *qeth_get_cardname_short(struct qeth_card *card) 143 { 144 if (card->info.guestlan) { 145 switch (card->info.type) { 146 case QETH_CARD_TYPE_OSD: 147 return "Virt.NIC QDIO"; 148 case QETH_CARD_TYPE_IQD: 149 return "Virt.NIC Hiper"; 150 case QETH_CARD_TYPE_OSM: 151 return "Virt.NIC OSM"; 152 case QETH_CARD_TYPE_OSX: 153 return "Virt.NIC OSX"; 154 default: 155 return "unknown"; 156 } 157 } else { 158 switch (card->info.type) { 159 case QETH_CARD_TYPE_OSD: 160 switch (card->info.link_type) { 161 case QETH_LINK_TYPE_FAST_ETH: 162 return "OSD_100"; 163 case QETH_LINK_TYPE_HSTR: 164 return "HSTR"; 165 case QETH_LINK_TYPE_GBIT_ETH: 166 return "OSD_1000"; 167 case QETH_LINK_TYPE_10GBIT_ETH: 168 return "OSD_10GIG"; 169 case QETH_LINK_TYPE_LANE_ETH100: 170 return "OSD_FE_LANE"; 171 case QETH_LINK_TYPE_LANE_TR: 172 return "OSD_TR_LANE"; 173 case QETH_LINK_TYPE_LANE_ETH1000: 174 return "OSD_GbE_LANE"; 175 case QETH_LINK_TYPE_LANE: 176 return "OSD_ATM_LANE"; 177 default: 178 return "OSD_Express"; 179 } 180 case QETH_CARD_TYPE_IQD: 181 return "HiperSockets"; 182 case QETH_CARD_TYPE_OSN: 183 return "OSN"; 184 case QETH_CARD_TYPE_OSM: 185 return "OSM_1000"; 186 case QETH_CARD_TYPE_OSX: 187 return "OSX_10GIG"; 188 default: 189 return "unknown"; 190 } 191 } 192 return "n/a"; 193 } 194 195 void qeth_set_recovery_task(struct qeth_card *card) 196 { 197 card->recovery_task = current; 198 } 199 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 200 201 void qeth_clear_recovery_task(struct qeth_card *card) 202 { 203 card->recovery_task = NULL; 204 } 205 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 206 207 static bool qeth_is_recovery_task(const struct qeth_card *card) 208 { 209 return card->recovery_task == current; 210 } 211 212 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 213 int clear_start_mask) 214 { 215 unsigned long flags; 216 217 spin_lock_irqsave(&card->thread_mask_lock, flags); 218 card->thread_allowed_mask = threads; 219 if (clear_start_mask) 220 card->thread_start_mask &= threads; 221 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 222 wake_up(&card->wait_q); 223 } 224 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 225 226 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 227 { 228 unsigned long flags; 229 int rc = 0; 230 231 spin_lock_irqsave(&card->thread_mask_lock, flags); 232 rc = (card->thread_running_mask & threads); 233 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 234 return rc; 235 } 236 EXPORT_SYMBOL_GPL(qeth_threads_running); 237 238 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 239 { 240 if (qeth_is_recovery_task(card)) 241 return 0; 242 return wait_event_interruptible(card->wait_q, 243 qeth_threads_running(card, threads) == 0); 244 } 245 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 246 247 void qeth_clear_working_pool_list(struct qeth_card *card) 248 { 249 struct qeth_buffer_pool_entry *pool_entry, *tmp; 250 251 QETH_CARD_TEXT(card, 5, "clwrklst"); 252 list_for_each_entry_safe(pool_entry, tmp, 253 &card->qdio.in_buf_pool.entry_list, list){ 254 list_del(&pool_entry->list); 255 } 256 } 257 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 258 259 static int qeth_alloc_buffer_pool(struct qeth_card *card) 260 { 261 struct qeth_buffer_pool_entry *pool_entry; 262 void *ptr; 263 int i, j; 264 265 QETH_CARD_TEXT(card, 5, "alocpool"); 266 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 267 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 268 if (!pool_entry) { 269 qeth_free_buffer_pool(card); 270 return -ENOMEM; 271 } 272 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 273 ptr = (void *) __get_free_page(GFP_KERNEL); 274 if (!ptr) { 275 while (j > 0) 276 free_page((unsigned long) 277 pool_entry->elements[--j]); 278 kfree(pool_entry); 279 qeth_free_buffer_pool(card); 280 return -ENOMEM; 281 } 282 pool_entry->elements[j] = ptr; 283 } 284 list_add(&pool_entry->init_list, 285 &card->qdio.init_pool.entry_list); 286 } 287 return 0; 288 } 289 290 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 291 { 292 QETH_CARD_TEXT(card, 2, "realcbp"); 293 294 if ((card->state != CARD_STATE_DOWN) && 295 (card->state != CARD_STATE_RECOVER)) 296 return -EPERM; 297 298 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 299 qeth_clear_working_pool_list(card); 300 qeth_free_buffer_pool(card); 301 card->qdio.in_buf_pool.buf_count = bufcnt; 302 card->qdio.init_pool.buf_count = bufcnt; 303 return qeth_alloc_buffer_pool(card); 304 } 305 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 306 307 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 308 { 309 if (!q) 310 return; 311 312 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 313 kfree(q); 314 } 315 316 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 317 { 318 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 319 int i; 320 321 if (!q) 322 return NULL; 323 324 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 325 kfree(q); 326 return NULL; 327 } 328 329 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 330 q->bufs[i].buffer = q->qdio_bufs[i]; 331 332 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 333 return q; 334 } 335 336 static int qeth_cq_init(struct qeth_card *card) 337 { 338 int rc; 339 340 if (card->options.cq == QETH_CQ_ENABLED) { 341 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 342 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 343 QDIO_MAX_BUFFERS_PER_Q); 344 card->qdio.c_q->next_buf_to_init = 127; 345 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 346 card->qdio.no_in_queues - 1, 0, 347 127); 348 if (rc) { 349 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 350 goto out; 351 } 352 } 353 rc = 0; 354 out: 355 return rc; 356 } 357 358 static int qeth_alloc_cq(struct qeth_card *card) 359 { 360 int rc; 361 362 if (card->options.cq == QETH_CQ_ENABLED) { 363 int i; 364 struct qdio_outbuf_state *outbuf_states; 365 366 QETH_DBF_TEXT(SETUP, 2, "cqon"); 367 card->qdio.c_q = qeth_alloc_qdio_queue(); 368 if (!card->qdio.c_q) { 369 rc = -1; 370 goto kmsg_out; 371 } 372 card->qdio.no_in_queues = 2; 373 card->qdio.out_bufstates = 374 kcalloc(card->qdio.no_out_queues * 375 QDIO_MAX_BUFFERS_PER_Q, 376 sizeof(struct qdio_outbuf_state), 377 GFP_KERNEL); 378 outbuf_states = card->qdio.out_bufstates; 379 if (outbuf_states == NULL) { 380 rc = -1; 381 goto free_cq_out; 382 } 383 for (i = 0; i < card->qdio.no_out_queues; ++i) { 384 card->qdio.out_qs[i]->bufstates = outbuf_states; 385 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 386 } 387 } else { 388 QETH_DBF_TEXT(SETUP, 2, "nocq"); 389 card->qdio.c_q = NULL; 390 card->qdio.no_in_queues = 1; 391 } 392 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 393 rc = 0; 394 out: 395 return rc; 396 free_cq_out: 397 qeth_free_qdio_queue(card->qdio.c_q); 398 card->qdio.c_q = NULL; 399 kmsg_out: 400 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 401 goto out; 402 } 403 404 static void qeth_free_cq(struct qeth_card *card) 405 { 406 if (card->qdio.c_q) { 407 --card->qdio.no_in_queues; 408 qeth_free_qdio_queue(card->qdio.c_q); 409 card->qdio.c_q = NULL; 410 } 411 kfree(card->qdio.out_bufstates); 412 card->qdio.out_bufstates = NULL; 413 } 414 415 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 416 int delayed) 417 { 418 enum iucv_tx_notify n; 419 420 switch (sbalf15) { 421 case 0: 422 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 423 break; 424 case 4: 425 case 16: 426 case 17: 427 case 18: 428 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 429 TX_NOTIFY_UNREACHABLE; 430 break; 431 default: 432 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 433 TX_NOTIFY_GENERALERROR; 434 break; 435 } 436 437 return n; 438 } 439 440 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 441 int forced_cleanup) 442 { 443 if (q->card->options.cq != QETH_CQ_ENABLED) 444 return; 445 446 if (q->bufs[bidx]->next_pending != NULL) { 447 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 448 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 449 450 while (c) { 451 if (forced_cleanup || 452 atomic_read(&c->state) == 453 QETH_QDIO_BUF_HANDLED_DELAYED) { 454 struct qeth_qdio_out_buffer *f = c; 455 QETH_CARD_TEXT(f->q->card, 5, "fp"); 456 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 457 /* release here to avoid interleaving between 458 outbound tasklet and inbound tasklet 459 regarding notifications and lifecycle */ 460 qeth_release_skbs(c); 461 462 c = f->next_pending; 463 WARN_ON_ONCE(head->next_pending != f); 464 head->next_pending = c; 465 kmem_cache_free(qeth_qdio_outbuf_cache, f); 466 } else { 467 head = c; 468 c = c->next_pending; 469 } 470 471 } 472 } 473 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 474 QETH_QDIO_BUF_HANDLED_DELAYED)) { 475 /* for recovery situations */ 476 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 477 qeth_init_qdio_out_buf(q, bidx); 478 QETH_CARD_TEXT(q->card, 2, "clprecov"); 479 } 480 } 481 482 483 static void qeth_qdio_handle_aob(struct qeth_card *card, 484 unsigned long phys_aob_addr) 485 { 486 struct qaob *aob; 487 struct qeth_qdio_out_buffer *buffer; 488 enum iucv_tx_notify notification; 489 unsigned int i; 490 491 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 492 QETH_CARD_TEXT(card, 5, "haob"); 493 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 494 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 495 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 496 497 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 498 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 499 notification = TX_NOTIFY_OK; 500 } else { 501 WARN_ON_ONCE(atomic_read(&buffer->state) != 502 QETH_QDIO_BUF_PENDING); 503 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 504 notification = TX_NOTIFY_DELAYED_OK; 505 } 506 507 if (aob->aorc != 0) { 508 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 509 notification = qeth_compute_cq_notification(aob->aorc, 1); 510 } 511 qeth_notify_skbs(buffer->q, buffer, notification); 512 513 buffer->aob = NULL; 514 /* Free dangling allocations. The attached skbs are handled by 515 * qeth_cleanup_handled_pending(). 516 */ 517 for (i = 0; 518 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card); 519 i++) { 520 if (aob->sba[i] && buffer->is_header[i]) 521 kmem_cache_free(qeth_core_header_cache, 522 (void *) aob->sba[i]); 523 } 524 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED); 525 526 qdio_release_aob(aob); 527 } 528 529 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 530 { 531 return card->options.cq == QETH_CQ_ENABLED && 532 card->qdio.c_q != NULL && 533 queue != 0 && 534 queue == card->qdio.no_in_queues - 1; 535 } 536 537 static int __qeth_issue_next_read(struct qeth_card *card) 538 { 539 int rc; 540 struct qeth_cmd_buffer *iob; 541 542 QETH_CARD_TEXT(card, 5, "issnxrd"); 543 if (card->read.state != CH_STATE_UP) 544 return -EIO; 545 iob = qeth_get_buffer(&card->read); 546 if (!iob) { 547 dev_warn(&card->gdev->dev, "The qeth device driver " 548 "failed to recover an error on the device\n"); 549 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 550 "available\n", dev_name(&card->gdev->dev)); 551 return -ENOMEM; 552 } 553 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 554 QETH_CARD_TEXT(card, 6, "noirqpnd"); 555 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 556 (addr_t) iob, 0, 0); 557 if (rc) { 558 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 559 "rc=%i\n", dev_name(&card->gdev->dev), rc); 560 atomic_set(&card->read.irq_pending, 0); 561 card->read_or_write_problem = 1; 562 qeth_schedule_recovery(card); 563 wake_up(&card->wait_q); 564 } 565 return rc; 566 } 567 568 static int qeth_issue_next_read(struct qeth_card *card) 569 { 570 int ret; 571 572 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 573 ret = __qeth_issue_next_read(card); 574 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 575 576 return ret; 577 } 578 579 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 580 { 581 struct qeth_reply *reply; 582 583 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 584 if (reply) { 585 refcount_set(&reply->refcnt, 1); 586 atomic_set(&reply->received, 0); 587 reply->card = card; 588 } 589 return reply; 590 } 591 592 static void qeth_get_reply(struct qeth_reply *reply) 593 { 594 refcount_inc(&reply->refcnt); 595 } 596 597 static void qeth_put_reply(struct qeth_reply *reply) 598 { 599 if (refcount_dec_and_test(&reply->refcnt)) 600 kfree(reply); 601 } 602 603 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 604 struct qeth_card *card) 605 { 606 char *ipa_name; 607 int com = cmd->hdr.command; 608 ipa_name = qeth_get_ipa_cmd_name(com); 609 if (rc) 610 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 611 "x%X \"%s\"\n", 612 ipa_name, com, dev_name(&card->gdev->dev), 613 QETH_CARD_IFNAME(card), rc, 614 qeth_get_ipa_msg(rc)); 615 else 616 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 617 ipa_name, com, dev_name(&card->gdev->dev), 618 QETH_CARD_IFNAME(card)); 619 } 620 621 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 622 struct qeth_cmd_buffer *iob) 623 { 624 struct qeth_ipa_cmd *cmd = NULL; 625 626 QETH_CARD_TEXT(card, 5, "chkipad"); 627 if (IS_IPA(iob->data)) { 628 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 629 if (IS_IPA_REPLY(cmd)) { 630 if (cmd->hdr.command != IPA_CMD_SETCCID && 631 cmd->hdr.command != IPA_CMD_DELCCID && 632 cmd->hdr.command != IPA_CMD_MODCCID && 633 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 634 qeth_issue_ipa_msg(cmd, 635 cmd->hdr.return_code, card); 636 return cmd; 637 } else { 638 switch (cmd->hdr.command) { 639 case IPA_CMD_STOPLAN: 640 if (cmd->hdr.return_code == 641 IPA_RC_VEPA_TO_VEB_TRANSITION) { 642 dev_err(&card->gdev->dev, 643 "Interface %s is down because the " 644 "adjacent port is no longer in " 645 "reflective relay mode\n", 646 QETH_CARD_IFNAME(card)); 647 qeth_close_dev(card); 648 } else { 649 dev_warn(&card->gdev->dev, 650 "The link for interface %s on CHPID" 651 " 0x%X failed\n", 652 QETH_CARD_IFNAME(card), 653 card->info.chpid); 654 qeth_issue_ipa_msg(cmd, 655 cmd->hdr.return_code, card); 656 } 657 card->lan_online = 0; 658 if (card->dev && netif_carrier_ok(card->dev)) 659 netif_carrier_off(card->dev); 660 return NULL; 661 case IPA_CMD_STARTLAN: 662 dev_info(&card->gdev->dev, 663 "The link for %s on CHPID 0x%X has" 664 " been restored\n", 665 QETH_CARD_IFNAME(card), 666 card->info.chpid); 667 netif_carrier_on(card->dev); 668 card->lan_online = 1; 669 if (card->info.hwtrap) 670 card->info.hwtrap = 2; 671 qeth_schedule_recovery(card); 672 return NULL; 673 case IPA_CMD_SETBRIDGEPORT_IQD: 674 case IPA_CMD_SETBRIDGEPORT_OSA: 675 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 676 if (card->discipline->control_event_handler 677 (card, cmd)) 678 return cmd; 679 else 680 return NULL; 681 case IPA_CMD_MODCCID: 682 return cmd; 683 case IPA_CMD_REGISTER_LOCAL_ADDR: 684 QETH_CARD_TEXT(card, 3, "irla"); 685 break; 686 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 687 QETH_CARD_TEXT(card, 3, "urla"); 688 break; 689 default: 690 QETH_DBF_MESSAGE(2, "Received data is IPA " 691 "but not a reply!\n"); 692 break; 693 } 694 } 695 } 696 return cmd; 697 } 698 699 void qeth_clear_ipacmd_list(struct qeth_card *card) 700 { 701 struct qeth_reply *reply, *r; 702 unsigned long flags; 703 704 QETH_CARD_TEXT(card, 4, "clipalst"); 705 706 spin_lock_irqsave(&card->lock, flags); 707 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 708 qeth_get_reply(reply); 709 reply->rc = -EIO; 710 atomic_inc(&reply->received); 711 list_del_init(&reply->list); 712 wake_up(&reply->wait_q); 713 qeth_put_reply(reply); 714 } 715 spin_unlock_irqrestore(&card->lock, flags); 716 } 717 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 718 719 static int qeth_check_idx_response(struct qeth_card *card, 720 unsigned char *buffer) 721 { 722 if (!buffer) 723 return 0; 724 725 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 726 if ((buffer[2] & 0xc0) == 0xc0) { 727 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n", 728 buffer[4]); 729 QETH_CARD_TEXT(card, 2, "ckidxres"); 730 QETH_CARD_TEXT(card, 2, " idxterm"); 731 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 732 if (buffer[4] == 0xf6) { 733 dev_err(&card->gdev->dev, 734 "The qeth device is not configured " 735 "for the OSI layer required by z/VM\n"); 736 return -EPERM; 737 } 738 return -EIO; 739 } 740 return 0; 741 } 742 743 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 744 { 745 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 746 dev_get_drvdata(&cdev->dev))->dev); 747 return card; 748 } 749 750 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 751 __u32 len) 752 { 753 struct qeth_card *card; 754 755 card = CARD_FROM_CDEV(channel->ccwdev); 756 QETH_CARD_TEXT(card, 4, "setupccw"); 757 if (channel == &card->read) 758 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 759 else 760 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 761 channel->ccw.count = len; 762 channel->ccw.cda = (__u32) __pa(iob); 763 } 764 765 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 766 { 767 __u8 index; 768 769 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 770 index = channel->io_buf_no; 771 do { 772 if (channel->iob[index].state == BUF_STATE_FREE) { 773 channel->iob[index].state = BUF_STATE_LOCKED; 774 channel->io_buf_no = (channel->io_buf_no + 1) % 775 QETH_CMD_BUFFER_NO; 776 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 777 return channel->iob + index; 778 } 779 index = (index + 1) % QETH_CMD_BUFFER_NO; 780 } while (index != channel->io_buf_no); 781 782 return NULL; 783 } 784 785 void qeth_release_buffer(struct qeth_channel *channel, 786 struct qeth_cmd_buffer *iob) 787 { 788 unsigned long flags; 789 790 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 791 spin_lock_irqsave(&channel->iob_lock, flags); 792 memset(iob->data, 0, QETH_BUFSIZE); 793 iob->state = BUF_STATE_FREE; 794 iob->callback = qeth_send_control_data_cb; 795 iob->rc = 0; 796 spin_unlock_irqrestore(&channel->iob_lock, flags); 797 wake_up(&channel->wait_q); 798 } 799 EXPORT_SYMBOL_GPL(qeth_release_buffer); 800 801 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 802 { 803 struct qeth_cmd_buffer *buffer = NULL; 804 unsigned long flags; 805 806 spin_lock_irqsave(&channel->iob_lock, flags); 807 buffer = __qeth_get_buffer(channel); 808 spin_unlock_irqrestore(&channel->iob_lock, flags); 809 return buffer; 810 } 811 812 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 813 { 814 struct qeth_cmd_buffer *buffer; 815 wait_event(channel->wait_q, 816 ((buffer = qeth_get_buffer(channel)) != NULL)); 817 return buffer; 818 } 819 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 820 821 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 822 { 823 int cnt; 824 825 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 826 qeth_release_buffer(channel, &channel->iob[cnt]); 827 channel->io_buf_no = 0; 828 } 829 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 830 831 static void qeth_send_control_data_cb(struct qeth_channel *channel, 832 struct qeth_cmd_buffer *iob) 833 { 834 struct qeth_card *card; 835 struct qeth_reply *reply, *r; 836 struct qeth_ipa_cmd *cmd; 837 unsigned long flags; 838 int keep_reply; 839 int rc = 0; 840 841 card = CARD_FROM_CDEV(channel->ccwdev); 842 QETH_CARD_TEXT(card, 4, "sndctlcb"); 843 rc = qeth_check_idx_response(card, iob->data); 844 switch (rc) { 845 case 0: 846 break; 847 case -EIO: 848 qeth_clear_ipacmd_list(card); 849 qeth_schedule_recovery(card); 850 /* fall through */ 851 default: 852 goto out; 853 } 854 855 cmd = qeth_check_ipa_data(card, iob); 856 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 857 goto out; 858 /*in case of OSN : check if cmd is set */ 859 if (card->info.type == QETH_CARD_TYPE_OSN && 860 cmd && 861 cmd->hdr.command != IPA_CMD_STARTLAN && 862 card->osn_info.assist_cb != NULL) { 863 card->osn_info.assist_cb(card->dev, cmd); 864 goto out; 865 } 866 867 spin_lock_irqsave(&card->lock, flags); 868 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 869 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 870 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 871 qeth_get_reply(reply); 872 list_del_init(&reply->list); 873 spin_unlock_irqrestore(&card->lock, flags); 874 keep_reply = 0; 875 if (reply->callback != NULL) { 876 if (cmd) { 877 reply->offset = (__u16)((char *)cmd - 878 (char *)iob->data); 879 keep_reply = reply->callback(card, 880 reply, 881 (unsigned long)cmd); 882 } else 883 keep_reply = reply->callback(card, 884 reply, 885 (unsigned long)iob); 886 } 887 if (cmd) 888 reply->rc = (u16) cmd->hdr.return_code; 889 else if (iob->rc) 890 reply->rc = iob->rc; 891 if (keep_reply) { 892 spin_lock_irqsave(&card->lock, flags); 893 list_add_tail(&reply->list, 894 &card->cmd_waiter_list); 895 spin_unlock_irqrestore(&card->lock, flags); 896 } else { 897 atomic_inc(&reply->received); 898 wake_up(&reply->wait_q); 899 } 900 qeth_put_reply(reply); 901 goto out; 902 } 903 } 904 spin_unlock_irqrestore(&card->lock, flags); 905 out: 906 memcpy(&card->seqno.pdu_hdr_ack, 907 QETH_PDU_HEADER_SEQ_NO(iob->data), 908 QETH_SEQ_NO_LENGTH); 909 qeth_release_buffer(channel, iob); 910 } 911 912 static int qeth_setup_channel(struct qeth_channel *channel) 913 { 914 int cnt; 915 916 QETH_DBF_TEXT(SETUP, 2, "setupch"); 917 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 918 channel->iob[cnt].data = 919 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 920 if (channel->iob[cnt].data == NULL) 921 break; 922 channel->iob[cnt].state = BUF_STATE_FREE; 923 channel->iob[cnt].channel = channel; 924 channel->iob[cnt].callback = qeth_send_control_data_cb; 925 channel->iob[cnt].rc = 0; 926 } 927 if (cnt < QETH_CMD_BUFFER_NO) { 928 while (cnt-- > 0) 929 kfree(channel->iob[cnt].data); 930 return -ENOMEM; 931 } 932 channel->io_buf_no = 0; 933 atomic_set(&channel->irq_pending, 0); 934 spin_lock_init(&channel->iob_lock); 935 936 init_waitqueue_head(&channel->wait_q); 937 return 0; 938 } 939 940 static int qeth_set_thread_start_bit(struct qeth_card *card, 941 unsigned long thread) 942 { 943 unsigned long flags; 944 945 spin_lock_irqsave(&card->thread_mask_lock, flags); 946 if (!(card->thread_allowed_mask & thread) || 947 (card->thread_start_mask & thread)) { 948 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 949 return -EPERM; 950 } 951 card->thread_start_mask |= thread; 952 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 953 return 0; 954 } 955 956 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 957 { 958 unsigned long flags; 959 960 spin_lock_irqsave(&card->thread_mask_lock, flags); 961 card->thread_start_mask &= ~thread; 962 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 963 wake_up(&card->wait_q); 964 } 965 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 966 967 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 968 { 969 unsigned long flags; 970 971 spin_lock_irqsave(&card->thread_mask_lock, flags); 972 card->thread_running_mask &= ~thread; 973 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 974 wake_up_all(&card->wait_q); 975 } 976 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 977 978 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 979 { 980 unsigned long flags; 981 int rc = 0; 982 983 spin_lock_irqsave(&card->thread_mask_lock, flags); 984 if (card->thread_start_mask & thread) { 985 if ((card->thread_allowed_mask & thread) && 986 !(card->thread_running_mask & thread)) { 987 rc = 1; 988 card->thread_start_mask &= ~thread; 989 card->thread_running_mask |= thread; 990 } else 991 rc = -EPERM; 992 } 993 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 994 return rc; 995 } 996 997 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 998 { 999 int rc = 0; 1000 1001 wait_event(card->wait_q, 1002 (rc = __qeth_do_run_thread(card, thread)) >= 0); 1003 return rc; 1004 } 1005 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 1006 1007 void qeth_schedule_recovery(struct qeth_card *card) 1008 { 1009 QETH_CARD_TEXT(card, 2, "startrec"); 1010 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 1011 schedule_work(&card->kernel_thread_starter); 1012 } 1013 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 1014 1015 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 1016 { 1017 int dstat, cstat; 1018 char *sense; 1019 struct qeth_card *card; 1020 1021 sense = (char *) irb->ecw; 1022 cstat = irb->scsw.cmd.cstat; 1023 dstat = irb->scsw.cmd.dstat; 1024 card = CARD_FROM_CDEV(cdev); 1025 1026 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1027 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1028 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1029 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1030 dev_warn(&cdev->dev, "The qeth device driver " 1031 "failed to recover an error on the device\n"); 1032 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1033 dev_name(&cdev->dev), dstat, cstat); 1034 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1035 16, 1, irb, 64, 1); 1036 return 1; 1037 } 1038 1039 if (dstat & DEV_STAT_UNIT_CHECK) { 1040 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1041 SENSE_RESETTING_EVENT_FLAG) { 1042 QETH_CARD_TEXT(card, 2, "REVIND"); 1043 return 1; 1044 } 1045 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1046 SENSE_COMMAND_REJECT_FLAG) { 1047 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1048 return 1; 1049 } 1050 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1051 QETH_CARD_TEXT(card, 2, "AFFE"); 1052 return 1; 1053 } 1054 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1055 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1056 return 0; 1057 } 1058 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1059 return 1; 1060 } 1061 return 0; 1062 } 1063 1064 static long __qeth_check_irb_error(struct ccw_device *cdev, 1065 unsigned long intparm, struct irb *irb) 1066 { 1067 struct qeth_card *card; 1068 1069 card = CARD_FROM_CDEV(cdev); 1070 1071 if (!card || !IS_ERR(irb)) 1072 return 0; 1073 1074 switch (PTR_ERR(irb)) { 1075 case -EIO: 1076 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1077 dev_name(&cdev->dev)); 1078 QETH_CARD_TEXT(card, 2, "ckirberr"); 1079 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1080 break; 1081 case -ETIMEDOUT: 1082 dev_warn(&cdev->dev, "A hardware operation timed out" 1083 " on the device\n"); 1084 QETH_CARD_TEXT(card, 2, "ckirberr"); 1085 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1086 if (intparm == QETH_RCD_PARM) { 1087 if (card->data.ccwdev == cdev) { 1088 card->data.state = CH_STATE_DOWN; 1089 wake_up(&card->wait_q); 1090 } 1091 } 1092 break; 1093 default: 1094 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1095 dev_name(&cdev->dev), PTR_ERR(irb)); 1096 QETH_CARD_TEXT(card, 2, "ckirberr"); 1097 QETH_CARD_TEXT(card, 2, " rc???"); 1098 } 1099 return PTR_ERR(irb); 1100 } 1101 1102 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1103 struct irb *irb) 1104 { 1105 int rc; 1106 int cstat, dstat; 1107 struct qeth_cmd_buffer *iob = NULL; 1108 struct qeth_channel *channel; 1109 struct qeth_card *card; 1110 1111 card = CARD_FROM_CDEV(cdev); 1112 if (!card) 1113 return; 1114 1115 QETH_CARD_TEXT(card, 5, "irq"); 1116 1117 if (card->read.ccwdev == cdev) { 1118 channel = &card->read; 1119 QETH_CARD_TEXT(card, 5, "read"); 1120 } else if (card->write.ccwdev == cdev) { 1121 channel = &card->write; 1122 QETH_CARD_TEXT(card, 5, "write"); 1123 } else { 1124 channel = &card->data; 1125 QETH_CARD_TEXT(card, 5, "data"); 1126 } 1127 1128 if (qeth_intparm_is_iob(intparm)) 1129 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1130 1131 if (__qeth_check_irb_error(cdev, intparm, irb)) { 1132 /* IO was terminated, free its resources. */ 1133 if (iob) 1134 qeth_release_buffer(iob->channel, iob); 1135 atomic_set(&channel->irq_pending, 0); 1136 wake_up(&card->wait_q); 1137 return; 1138 } 1139 1140 atomic_set(&channel->irq_pending, 0); 1141 1142 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1143 channel->state = CH_STATE_STOPPED; 1144 1145 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1146 channel->state = CH_STATE_HALTED; 1147 1148 /*let's wake up immediately on data channel*/ 1149 if ((channel == &card->data) && (intparm != 0) && 1150 (intparm != QETH_RCD_PARM)) 1151 goto out; 1152 1153 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1154 QETH_CARD_TEXT(card, 6, "clrchpar"); 1155 /* we don't have to handle this further */ 1156 intparm = 0; 1157 } 1158 if (intparm == QETH_HALT_CHANNEL_PARM) { 1159 QETH_CARD_TEXT(card, 6, "hltchpar"); 1160 /* we don't have to handle this further */ 1161 intparm = 0; 1162 } 1163 1164 cstat = irb->scsw.cmd.cstat; 1165 dstat = irb->scsw.cmd.dstat; 1166 1167 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1168 (dstat & DEV_STAT_UNIT_CHECK) || 1169 (cstat)) { 1170 if (irb->esw.esw0.erw.cons) { 1171 dev_warn(&channel->ccwdev->dev, 1172 "The qeth device driver failed to recover " 1173 "an error on the device\n"); 1174 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1175 "0x%X dstat 0x%X\n", 1176 dev_name(&channel->ccwdev->dev), cstat, dstat); 1177 print_hex_dump(KERN_WARNING, "qeth: irb ", 1178 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1179 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1180 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1181 } 1182 if (intparm == QETH_RCD_PARM) { 1183 channel->state = CH_STATE_DOWN; 1184 goto out; 1185 } 1186 rc = qeth_get_problem(cdev, irb); 1187 if (rc) { 1188 card->read_or_write_problem = 1; 1189 qeth_clear_ipacmd_list(card); 1190 qeth_schedule_recovery(card); 1191 goto out; 1192 } 1193 } 1194 1195 if (intparm == QETH_RCD_PARM) { 1196 channel->state = CH_STATE_RCD_DONE; 1197 goto out; 1198 } 1199 if (channel == &card->data) 1200 return; 1201 if (channel == &card->read && 1202 channel->state == CH_STATE_UP) 1203 __qeth_issue_next_read(card); 1204 1205 if (iob && iob->callback) 1206 iob->callback(iob->channel, iob); 1207 1208 out: 1209 wake_up(&card->wait_q); 1210 return; 1211 } 1212 1213 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1214 struct qeth_qdio_out_buffer *buf, 1215 enum iucv_tx_notify notification) 1216 { 1217 struct sk_buff *skb; 1218 1219 if (skb_queue_empty(&buf->skb_list)) 1220 goto out; 1221 skb = skb_peek(&buf->skb_list); 1222 while (skb) { 1223 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1224 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1225 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1226 if (skb->sk) { 1227 struct iucv_sock *iucv = iucv_sk(skb->sk); 1228 iucv->sk_txnotify(skb, notification); 1229 } 1230 } 1231 if (skb_queue_is_last(&buf->skb_list, skb)) 1232 skb = NULL; 1233 else 1234 skb = skb_queue_next(&buf->skb_list, skb); 1235 } 1236 out: 1237 return; 1238 } 1239 1240 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1241 { 1242 struct sk_buff *skb; 1243 struct iucv_sock *iucv; 1244 int notify_general_error = 0; 1245 1246 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1247 notify_general_error = 1; 1248 1249 /* release may never happen from within CQ tasklet scope */ 1250 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1251 1252 skb = skb_dequeue(&buf->skb_list); 1253 while (skb) { 1254 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1255 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1256 if (notify_general_error && 1257 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1258 if (skb->sk) { 1259 iucv = iucv_sk(skb->sk); 1260 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1261 } 1262 } 1263 refcount_dec(&skb->users); 1264 dev_kfree_skb_any(skb); 1265 skb = skb_dequeue(&buf->skb_list); 1266 } 1267 } 1268 1269 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1270 struct qeth_qdio_out_buffer *buf, 1271 enum qeth_qdio_buffer_states newbufstate) 1272 { 1273 int i; 1274 1275 /* is PCI flag set on buffer? */ 1276 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1277 atomic_dec(&queue->set_pci_flags_count); 1278 1279 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1280 qeth_release_skbs(buf); 1281 } 1282 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1283 if (buf->buffer->element[i].addr && buf->is_header[i]) 1284 kmem_cache_free(qeth_core_header_cache, 1285 buf->buffer->element[i].addr); 1286 buf->is_header[i] = 0; 1287 buf->buffer->element[i].length = 0; 1288 buf->buffer->element[i].addr = NULL; 1289 buf->buffer->element[i].eflags = 0; 1290 buf->buffer->element[i].sflags = 0; 1291 } 1292 buf->buffer->element[15].eflags = 0; 1293 buf->buffer->element[15].sflags = 0; 1294 buf->next_element_to_fill = 0; 1295 atomic_set(&buf->state, newbufstate); 1296 } 1297 1298 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1299 { 1300 int j; 1301 1302 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1303 if (!q->bufs[j]) 1304 continue; 1305 qeth_cleanup_handled_pending(q, j, 1); 1306 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1307 if (free) { 1308 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1309 q->bufs[j] = NULL; 1310 } 1311 } 1312 } 1313 1314 void qeth_clear_qdio_buffers(struct qeth_card *card) 1315 { 1316 int i; 1317 1318 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1319 /* clear outbound buffers to free skbs */ 1320 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1321 if (card->qdio.out_qs[i]) { 1322 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1323 } 1324 } 1325 } 1326 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1327 1328 static void qeth_free_buffer_pool(struct qeth_card *card) 1329 { 1330 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1331 int i = 0; 1332 list_for_each_entry_safe(pool_entry, tmp, 1333 &card->qdio.init_pool.entry_list, init_list){ 1334 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1335 free_page((unsigned long)pool_entry->elements[i]); 1336 list_del(&pool_entry->init_list); 1337 kfree(pool_entry); 1338 } 1339 } 1340 1341 static void qeth_clean_channel(struct qeth_channel *channel) 1342 { 1343 int cnt; 1344 1345 QETH_DBF_TEXT(SETUP, 2, "freech"); 1346 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1347 kfree(channel->iob[cnt].data); 1348 } 1349 1350 static void qeth_set_single_write_queues(struct qeth_card *card) 1351 { 1352 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1353 (card->qdio.no_out_queues == 4)) 1354 qeth_free_qdio_buffers(card); 1355 1356 card->qdio.no_out_queues = 1; 1357 if (card->qdio.default_out_queue != 0) 1358 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1359 1360 card->qdio.default_out_queue = 0; 1361 } 1362 1363 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1364 { 1365 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1366 (card->qdio.no_out_queues == 1)) { 1367 qeth_free_qdio_buffers(card); 1368 card->qdio.default_out_queue = 2; 1369 } 1370 card->qdio.no_out_queues = 4; 1371 } 1372 1373 static void qeth_update_from_chp_desc(struct qeth_card *card) 1374 { 1375 struct ccw_device *ccwdev; 1376 struct channel_path_desc_fmt0 *chp_dsc; 1377 1378 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1379 1380 ccwdev = card->data.ccwdev; 1381 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1382 if (!chp_dsc) 1383 goto out; 1384 1385 card->info.func_level = 0x4100 + chp_dsc->desc; 1386 if (card->info.type == QETH_CARD_TYPE_IQD) 1387 goto out; 1388 1389 /* CHPP field bit 6 == 1 -> single queue */ 1390 if ((chp_dsc->chpp & 0x02) == 0x02) 1391 qeth_set_single_write_queues(card); 1392 else 1393 qeth_set_multiple_write_queues(card); 1394 out: 1395 kfree(chp_dsc); 1396 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1397 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1398 } 1399 1400 static void qeth_init_qdio_info(struct qeth_card *card) 1401 { 1402 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1403 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1404 /* inbound */ 1405 card->qdio.no_in_queues = 1; 1406 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1407 if (card->info.type == QETH_CARD_TYPE_IQD) 1408 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1409 else 1410 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1411 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1412 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1413 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1414 } 1415 1416 static void qeth_set_intial_options(struct qeth_card *card) 1417 { 1418 card->options.route4.type = NO_ROUTER; 1419 card->options.route6.type = NO_ROUTER; 1420 card->options.fake_broadcast = 0; 1421 card->options.performance_stats = 0; 1422 card->options.rx_sg_cb = QETH_RX_SG_CB; 1423 card->options.isolation = ISOLATION_MODE_NONE; 1424 card->options.cq = QETH_CQ_DISABLED; 1425 } 1426 1427 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1428 { 1429 unsigned long flags; 1430 int rc = 0; 1431 1432 spin_lock_irqsave(&card->thread_mask_lock, flags); 1433 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1434 (u8) card->thread_start_mask, 1435 (u8) card->thread_allowed_mask, 1436 (u8) card->thread_running_mask); 1437 rc = (card->thread_start_mask & thread); 1438 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1439 return rc; 1440 } 1441 1442 static void qeth_start_kernel_thread(struct work_struct *work) 1443 { 1444 struct task_struct *ts; 1445 struct qeth_card *card = container_of(work, struct qeth_card, 1446 kernel_thread_starter); 1447 QETH_CARD_TEXT(card , 2, "strthrd"); 1448 1449 if (card->read.state != CH_STATE_UP && 1450 card->write.state != CH_STATE_UP) 1451 return; 1452 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1453 ts = kthread_run(card->discipline->recover, (void *)card, 1454 "qeth_recover"); 1455 if (IS_ERR(ts)) { 1456 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1457 qeth_clear_thread_running_bit(card, 1458 QETH_RECOVER_THREAD); 1459 } 1460 } 1461 } 1462 1463 static void qeth_buffer_reclaim_work(struct work_struct *); 1464 static int qeth_setup_card(struct qeth_card *card) 1465 { 1466 1467 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1468 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1469 1470 card->read.state = CH_STATE_DOWN; 1471 card->write.state = CH_STATE_DOWN; 1472 card->data.state = CH_STATE_DOWN; 1473 card->state = CARD_STATE_DOWN; 1474 card->lan_online = 0; 1475 card->read_or_write_problem = 0; 1476 card->dev = NULL; 1477 spin_lock_init(&card->mclock); 1478 spin_lock_init(&card->lock); 1479 spin_lock_init(&card->ip_lock); 1480 spin_lock_init(&card->thread_mask_lock); 1481 mutex_init(&card->conf_mutex); 1482 mutex_init(&card->discipline_mutex); 1483 mutex_init(&card->vid_list_mutex); 1484 card->thread_start_mask = 0; 1485 card->thread_allowed_mask = 0; 1486 card->thread_running_mask = 0; 1487 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1488 INIT_LIST_HEAD(&card->cmd_waiter_list); 1489 init_waitqueue_head(&card->wait_q); 1490 /* initial options */ 1491 qeth_set_intial_options(card); 1492 /* IP address takeover */ 1493 INIT_LIST_HEAD(&card->ipato.entries); 1494 card->ipato.enabled = false; 1495 card->ipato.invert4 = false; 1496 card->ipato.invert6 = false; 1497 /* init QDIO stuff */ 1498 qeth_init_qdio_info(card); 1499 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1500 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1501 return 0; 1502 } 1503 1504 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1505 { 1506 struct qeth_card *card = container_of(slr, struct qeth_card, 1507 qeth_service_level); 1508 if (card->info.mcl_level[0]) 1509 seq_printf(m, "qeth: %s firmware level %s\n", 1510 CARD_BUS_ID(card), card->info.mcl_level); 1511 } 1512 1513 static struct qeth_card *qeth_alloc_card(void) 1514 { 1515 struct qeth_card *card; 1516 1517 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1518 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1519 if (!card) 1520 goto out; 1521 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1522 if (qeth_setup_channel(&card->read)) 1523 goto out_ip; 1524 if (qeth_setup_channel(&card->write)) 1525 goto out_channel; 1526 card->options.layer2 = -1; 1527 card->qeth_service_level.seq_print = qeth_core_sl_print; 1528 register_service_level(&card->qeth_service_level); 1529 return card; 1530 1531 out_channel: 1532 qeth_clean_channel(&card->read); 1533 out_ip: 1534 kfree(card); 1535 out: 1536 return NULL; 1537 } 1538 1539 static void qeth_determine_card_type(struct qeth_card *card) 1540 { 1541 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1542 1543 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1544 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1545 card->info.type = CARD_RDEV(card)->id.driver_info; 1546 card->qdio.no_out_queues = QETH_MAX_QUEUES; 1547 if (card->info.type == QETH_CARD_TYPE_IQD) 1548 card->info.is_multicast_different = 0x0103; 1549 qeth_update_from_chp_desc(card); 1550 } 1551 1552 static int qeth_clear_channel(struct qeth_channel *channel) 1553 { 1554 unsigned long flags; 1555 struct qeth_card *card; 1556 int rc; 1557 1558 card = CARD_FROM_CDEV(channel->ccwdev); 1559 QETH_CARD_TEXT(card, 3, "clearch"); 1560 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1561 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1562 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1563 1564 if (rc) 1565 return rc; 1566 rc = wait_event_interruptible_timeout(card->wait_q, 1567 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1568 if (rc == -ERESTARTSYS) 1569 return rc; 1570 if (channel->state != CH_STATE_STOPPED) 1571 return -ETIME; 1572 channel->state = CH_STATE_DOWN; 1573 return 0; 1574 } 1575 1576 static int qeth_halt_channel(struct qeth_channel *channel) 1577 { 1578 unsigned long flags; 1579 struct qeth_card *card; 1580 int rc; 1581 1582 card = CARD_FROM_CDEV(channel->ccwdev); 1583 QETH_CARD_TEXT(card, 3, "haltch"); 1584 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1585 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1586 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1587 1588 if (rc) 1589 return rc; 1590 rc = wait_event_interruptible_timeout(card->wait_q, 1591 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1592 if (rc == -ERESTARTSYS) 1593 return rc; 1594 if (channel->state != CH_STATE_HALTED) 1595 return -ETIME; 1596 return 0; 1597 } 1598 1599 static int qeth_halt_channels(struct qeth_card *card) 1600 { 1601 int rc1 = 0, rc2 = 0, rc3 = 0; 1602 1603 QETH_CARD_TEXT(card, 3, "haltchs"); 1604 rc1 = qeth_halt_channel(&card->read); 1605 rc2 = qeth_halt_channel(&card->write); 1606 rc3 = qeth_halt_channel(&card->data); 1607 if (rc1) 1608 return rc1; 1609 if (rc2) 1610 return rc2; 1611 return rc3; 1612 } 1613 1614 static int qeth_clear_channels(struct qeth_card *card) 1615 { 1616 int rc1 = 0, rc2 = 0, rc3 = 0; 1617 1618 QETH_CARD_TEXT(card, 3, "clearchs"); 1619 rc1 = qeth_clear_channel(&card->read); 1620 rc2 = qeth_clear_channel(&card->write); 1621 rc3 = qeth_clear_channel(&card->data); 1622 if (rc1) 1623 return rc1; 1624 if (rc2) 1625 return rc2; 1626 return rc3; 1627 } 1628 1629 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1630 { 1631 int rc = 0; 1632 1633 QETH_CARD_TEXT(card, 3, "clhacrd"); 1634 1635 if (halt) 1636 rc = qeth_halt_channels(card); 1637 if (rc) 1638 return rc; 1639 return qeth_clear_channels(card); 1640 } 1641 1642 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1643 { 1644 int rc = 0; 1645 1646 QETH_CARD_TEXT(card, 3, "qdioclr"); 1647 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1648 QETH_QDIO_CLEANING)) { 1649 case QETH_QDIO_ESTABLISHED: 1650 if (card->info.type == QETH_CARD_TYPE_IQD) 1651 rc = qdio_shutdown(CARD_DDEV(card), 1652 QDIO_FLAG_CLEANUP_USING_HALT); 1653 else 1654 rc = qdio_shutdown(CARD_DDEV(card), 1655 QDIO_FLAG_CLEANUP_USING_CLEAR); 1656 if (rc) 1657 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1658 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1659 break; 1660 case QETH_QDIO_CLEANING: 1661 return rc; 1662 default: 1663 break; 1664 } 1665 rc = qeth_clear_halt_card(card, use_halt); 1666 if (rc) 1667 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1668 card->state = CARD_STATE_DOWN; 1669 return rc; 1670 } 1671 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1672 1673 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1674 int *length) 1675 { 1676 struct ciw *ciw; 1677 char *rcd_buf; 1678 int ret; 1679 struct qeth_channel *channel = &card->data; 1680 unsigned long flags; 1681 1682 /* 1683 * scan for RCD command in extended SenseID data 1684 */ 1685 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1686 if (!ciw || ciw->cmd == 0) 1687 return -EOPNOTSUPP; 1688 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1689 if (!rcd_buf) 1690 return -ENOMEM; 1691 1692 channel->ccw.cmd_code = ciw->cmd; 1693 channel->ccw.cda = (__u32) __pa(rcd_buf); 1694 channel->ccw.count = ciw->count; 1695 channel->ccw.flags = CCW_FLAG_SLI; 1696 channel->state = CH_STATE_RCD; 1697 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1698 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1699 QETH_RCD_PARM, LPM_ANYPATH, 0, 1700 QETH_RCD_TIMEOUT); 1701 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1702 if (!ret) 1703 wait_event(card->wait_q, 1704 (channel->state == CH_STATE_RCD_DONE || 1705 channel->state == CH_STATE_DOWN)); 1706 if (channel->state == CH_STATE_DOWN) 1707 ret = -EIO; 1708 else 1709 channel->state = CH_STATE_DOWN; 1710 if (ret) { 1711 kfree(rcd_buf); 1712 *buffer = NULL; 1713 *length = 0; 1714 } else { 1715 *length = ciw->count; 1716 *buffer = rcd_buf; 1717 } 1718 return ret; 1719 } 1720 1721 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1722 { 1723 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1724 card->info.chpid = prcd[30]; 1725 card->info.unit_addr2 = prcd[31]; 1726 card->info.cula = prcd[63]; 1727 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1728 (prcd[0x11] == _ascebc['M'])); 1729 } 1730 1731 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1732 { 1733 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1734 struct diag26c_vnic_resp *response = NULL; 1735 struct diag26c_vnic_req *request = NULL; 1736 struct ccw_dev_id id; 1737 char userid[80]; 1738 int rc = 0; 1739 1740 QETH_DBF_TEXT(SETUP, 2, "vmlayer"); 1741 1742 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1743 if (rc) 1744 goto out; 1745 1746 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1747 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1748 if (!request || !response) { 1749 rc = -ENOMEM; 1750 goto out; 1751 } 1752 1753 ccw_device_get_id(CARD_RDEV(card), &id); 1754 request->resp_buf_len = sizeof(*response); 1755 request->resp_version = DIAG26C_VERSION6_VM65918; 1756 request->req_format = DIAG26C_VNIC_INFO; 1757 ASCEBC(userid, 8); 1758 memcpy(&request->sys_name, userid, 8); 1759 request->devno = id.devno; 1760 1761 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1762 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1763 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1764 if (rc) 1765 goto out; 1766 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1767 1768 if (request->resp_buf_len < sizeof(*response) || 1769 response->version != request->resp_version) { 1770 rc = -EIO; 1771 goto out; 1772 } 1773 1774 if (response->protocol == VNIC_INFO_PROT_L2) 1775 disc = QETH_DISCIPLINE_LAYER2; 1776 else if (response->protocol == VNIC_INFO_PROT_L3) 1777 disc = QETH_DISCIPLINE_LAYER3; 1778 1779 out: 1780 kfree(response); 1781 kfree(request); 1782 if (rc) 1783 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc); 1784 return disc; 1785 } 1786 1787 /* Determine whether the device requires a specific layer discipline */ 1788 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1789 { 1790 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1791 1792 if (card->info.type == QETH_CARD_TYPE_OSM || 1793 card->info.type == QETH_CARD_TYPE_OSN) 1794 disc = QETH_DISCIPLINE_LAYER2; 1795 else if (card->info.guestlan) 1796 disc = (card->info.type == QETH_CARD_TYPE_IQD) ? 1797 QETH_DISCIPLINE_LAYER3 : 1798 qeth_vm_detect_layer(card); 1799 1800 switch (disc) { 1801 case QETH_DISCIPLINE_LAYER2: 1802 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1803 break; 1804 case QETH_DISCIPLINE_LAYER3: 1805 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1806 break; 1807 default: 1808 QETH_DBF_TEXT(SETUP, 3, "force no"); 1809 } 1810 1811 return disc; 1812 } 1813 1814 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1815 { 1816 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1817 1818 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1819 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1820 card->info.blkt.time_total = 0; 1821 card->info.blkt.inter_packet = 0; 1822 card->info.blkt.inter_packet_jumbo = 0; 1823 } else { 1824 card->info.blkt.time_total = 250; 1825 card->info.blkt.inter_packet = 5; 1826 card->info.blkt.inter_packet_jumbo = 15; 1827 } 1828 } 1829 1830 static void qeth_init_tokens(struct qeth_card *card) 1831 { 1832 card->token.issuer_rm_w = 0x00010103UL; 1833 card->token.cm_filter_w = 0x00010108UL; 1834 card->token.cm_connection_w = 0x0001010aUL; 1835 card->token.ulp_filter_w = 0x0001010bUL; 1836 card->token.ulp_connection_w = 0x0001010dUL; 1837 } 1838 1839 static void qeth_init_func_level(struct qeth_card *card) 1840 { 1841 switch (card->info.type) { 1842 case QETH_CARD_TYPE_IQD: 1843 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1844 break; 1845 case QETH_CARD_TYPE_OSD: 1846 case QETH_CARD_TYPE_OSN: 1847 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1848 break; 1849 default: 1850 break; 1851 } 1852 } 1853 1854 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1855 void (*idx_reply_cb)(struct qeth_channel *, 1856 struct qeth_cmd_buffer *)) 1857 { 1858 struct qeth_cmd_buffer *iob; 1859 unsigned long flags; 1860 int rc; 1861 struct qeth_card *card; 1862 1863 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1864 card = CARD_FROM_CDEV(channel->ccwdev); 1865 iob = qeth_get_buffer(channel); 1866 if (!iob) 1867 return -ENOMEM; 1868 iob->callback = idx_reply_cb; 1869 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1870 channel->ccw.count = QETH_BUFSIZE; 1871 channel->ccw.cda = (__u32) __pa(iob->data); 1872 1873 wait_event(card->wait_q, 1874 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1875 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1876 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1877 rc = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1878 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1879 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1880 1881 if (rc) { 1882 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1883 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1884 atomic_set(&channel->irq_pending, 0); 1885 wake_up(&card->wait_q); 1886 return rc; 1887 } 1888 rc = wait_event_interruptible_timeout(card->wait_q, 1889 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1890 if (rc == -ERESTARTSYS) 1891 return rc; 1892 if (channel->state != CH_STATE_UP) { 1893 rc = -ETIME; 1894 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1895 } else 1896 rc = 0; 1897 return rc; 1898 } 1899 1900 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1901 void (*idx_reply_cb)(struct qeth_channel *, 1902 struct qeth_cmd_buffer *)) 1903 { 1904 struct qeth_card *card; 1905 struct qeth_cmd_buffer *iob; 1906 unsigned long flags; 1907 __u16 temp; 1908 __u8 tmp; 1909 int rc; 1910 struct ccw_dev_id temp_devid; 1911 1912 card = CARD_FROM_CDEV(channel->ccwdev); 1913 1914 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1915 1916 iob = qeth_get_buffer(channel); 1917 if (!iob) 1918 return -ENOMEM; 1919 iob->callback = idx_reply_cb; 1920 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1921 channel->ccw.count = IDX_ACTIVATE_SIZE; 1922 channel->ccw.cda = (__u32) __pa(iob->data); 1923 if (channel == &card->write) { 1924 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1925 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1926 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1927 card->seqno.trans_hdr++; 1928 } else { 1929 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1930 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1931 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1932 } 1933 tmp = ((__u8)card->info.portno) | 0x80; 1934 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1935 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1936 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1937 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1938 &card->info.func_level, sizeof(__u16)); 1939 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1940 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1941 temp = (card->info.cula << 8) + card->info.unit_addr2; 1942 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1943 1944 wait_event(card->wait_q, 1945 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1946 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1947 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1948 rc = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1949 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1950 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1951 1952 if (rc) { 1953 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1954 rc); 1955 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1956 atomic_set(&channel->irq_pending, 0); 1957 wake_up(&card->wait_q); 1958 return rc; 1959 } 1960 rc = wait_event_interruptible_timeout(card->wait_q, 1961 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1962 if (rc == -ERESTARTSYS) 1963 return rc; 1964 if (channel->state != CH_STATE_ACTIVATING) { 1965 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1966 " failed to recover an error on the device\n"); 1967 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1968 dev_name(&channel->ccwdev->dev)); 1969 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1970 return -ETIME; 1971 } 1972 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1973 } 1974 1975 static int qeth_peer_func_level(int level) 1976 { 1977 if ((level & 0xff) == 8) 1978 return (level & 0xff) + 0x400; 1979 if (((level >> 8) & 3) == 1) 1980 return (level & 0xff) + 0x200; 1981 return level; 1982 } 1983 1984 static void qeth_idx_write_cb(struct qeth_channel *channel, 1985 struct qeth_cmd_buffer *iob) 1986 { 1987 struct qeth_card *card; 1988 __u16 temp; 1989 1990 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1991 1992 if (channel->state == CH_STATE_DOWN) { 1993 channel->state = CH_STATE_ACTIVATING; 1994 goto out; 1995 } 1996 card = CARD_FROM_CDEV(channel->ccwdev); 1997 1998 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1999 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 2000 dev_err(&card->write.ccwdev->dev, 2001 "The adapter is used exclusively by another " 2002 "host\n"); 2003 else 2004 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 2005 " negative reply\n", 2006 dev_name(&card->write.ccwdev->dev)); 2007 goto out; 2008 } 2009 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2010 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 2011 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 2012 "function level mismatch (sent: 0x%x, received: " 2013 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 2014 card->info.func_level, temp); 2015 goto out; 2016 } 2017 channel->state = CH_STATE_UP; 2018 out: 2019 qeth_release_buffer(channel, iob); 2020 } 2021 2022 static void qeth_idx_read_cb(struct qeth_channel *channel, 2023 struct qeth_cmd_buffer *iob) 2024 { 2025 struct qeth_card *card; 2026 __u16 temp; 2027 2028 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 2029 if (channel->state == CH_STATE_DOWN) { 2030 channel->state = CH_STATE_ACTIVATING; 2031 goto out; 2032 } 2033 2034 card = CARD_FROM_CDEV(channel->ccwdev); 2035 if (qeth_check_idx_response(card, iob->data)) 2036 goto out; 2037 2038 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 2039 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 2040 case QETH_IDX_ACT_ERR_EXCL: 2041 dev_err(&card->write.ccwdev->dev, 2042 "The adapter is used exclusively by another " 2043 "host\n"); 2044 break; 2045 case QETH_IDX_ACT_ERR_AUTH: 2046 case QETH_IDX_ACT_ERR_AUTH_USER: 2047 dev_err(&card->read.ccwdev->dev, 2048 "Setting the device online failed because of " 2049 "insufficient authorization\n"); 2050 break; 2051 default: 2052 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 2053 " negative reply\n", 2054 dev_name(&card->read.ccwdev->dev)); 2055 } 2056 QETH_CARD_TEXT_(card, 2, "idxread%c", 2057 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 2058 goto out; 2059 } 2060 2061 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2062 if (temp != qeth_peer_func_level(card->info.func_level)) { 2063 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 2064 "level mismatch (sent: 0x%x, received: 0x%x)\n", 2065 dev_name(&card->read.ccwdev->dev), 2066 card->info.func_level, temp); 2067 goto out; 2068 } 2069 memcpy(&card->token.issuer_rm_r, 2070 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2071 QETH_MPC_TOKEN_LENGTH); 2072 memcpy(&card->info.mcl_level[0], 2073 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2074 channel->state = CH_STATE_UP; 2075 out: 2076 qeth_release_buffer(channel, iob); 2077 } 2078 2079 void qeth_prepare_control_data(struct qeth_card *card, int len, 2080 struct qeth_cmd_buffer *iob) 2081 { 2082 qeth_setup_ccw(&card->write, iob->data, len); 2083 iob->callback = qeth_release_buffer; 2084 2085 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2086 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2087 card->seqno.trans_hdr++; 2088 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2089 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2090 card->seqno.pdu_hdr++; 2091 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2092 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2093 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2094 } 2095 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2096 2097 /** 2098 * qeth_send_control_data() - send control command to the card 2099 * @card: qeth_card structure pointer 2100 * @len: size of the command buffer 2101 * @iob: qeth_cmd_buffer pointer 2102 * @reply_cb: callback function pointer 2103 * @cb_card: pointer to the qeth_card structure 2104 * @cb_reply: pointer to the qeth_reply structure 2105 * @cb_cmd: pointer to the original iob for non-IPA 2106 * commands, or to the qeth_ipa_cmd structure 2107 * for the IPA commands. 2108 * @reply_param: private pointer passed to the callback 2109 * 2110 * Returns the value of the `return_code' field of the response 2111 * block returned from the hardware, or other error indication. 2112 * Value of zero indicates successful execution of the command. 2113 * 2114 * Callback function gets called one or more times, with cb_cmd 2115 * pointing to the response returned by the hardware. Callback 2116 * function must return non-zero if more reply blocks are expected, 2117 * and zero if the last or only reply block is received. Callback 2118 * function can get the value of the reply_param pointer from the 2119 * field 'param' of the structure qeth_reply. 2120 */ 2121 2122 int qeth_send_control_data(struct qeth_card *card, int len, 2123 struct qeth_cmd_buffer *iob, 2124 int (*reply_cb)(struct qeth_card *cb_card, 2125 struct qeth_reply *cb_reply, 2126 unsigned long cb_cmd), 2127 void *reply_param) 2128 { 2129 int rc; 2130 unsigned long flags; 2131 struct qeth_reply *reply = NULL; 2132 unsigned long timeout, event_timeout; 2133 struct qeth_ipa_cmd *cmd = NULL; 2134 2135 QETH_CARD_TEXT(card, 2, "sendctl"); 2136 2137 if (card->read_or_write_problem) { 2138 qeth_release_buffer(iob->channel, iob); 2139 return -EIO; 2140 } 2141 reply = qeth_alloc_reply(card); 2142 if (!reply) { 2143 return -ENOMEM; 2144 } 2145 reply->callback = reply_cb; 2146 reply->param = reply_param; 2147 2148 init_waitqueue_head(&reply->wait_q); 2149 2150 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2151 2152 if (IS_IPA(iob->data)) { 2153 cmd = __ipa_cmd(iob); 2154 cmd->hdr.seqno = card->seqno.ipa++; 2155 reply->seqno = cmd->hdr.seqno; 2156 event_timeout = QETH_IPA_TIMEOUT; 2157 } else { 2158 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2159 event_timeout = QETH_TIMEOUT; 2160 } 2161 qeth_prepare_control_data(card, len, iob); 2162 2163 spin_lock_irqsave(&card->lock, flags); 2164 list_add_tail(&reply->list, &card->cmd_waiter_list); 2165 spin_unlock_irqrestore(&card->lock, flags); 2166 2167 timeout = jiffies + event_timeout; 2168 2169 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2170 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2171 rc = ccw_device_start_timeout(CARD_WDEV(card), &card->write.ccw, 2172 (addr_t) iob, 0, 0, event_timeout); 2173 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2174 if (rc) { 2175 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2176 "ccw_device_start rc = %i\n", 2177 dev_name(&card->write.ccwdev->dev), rc); 2178 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2179 spin_lock_irqsave(&card->lock, flags); 2180 list_del_init(&reply->list); 2181 qeth_put_reply(reply); 2182 spin_unlock_irqrestore(&card->lock, flags); 2183 qeth_release_buffer(iob->channel, iob); 2184 atomic_set(&card->write.irq_pending, 0); 2185 wake_up(&card->wait_q); 2186 return rc; 2187 } 2188 2189 /* we have only one long running ipassist, since we can ensure 2190 process context of this command we can sleep */ 2191 if (cmd && cmd->hdr.command == IPA_CMD_SETIP && 2192 cmd->hdr.prot_version == QETH_PROT_IPV4) { 2193 if (!wait_event_timeout(reply->wait_q, 2194 atomic_read(&reply->received), event_timeout)) 2195 goto time_err; 2196 } else { 2197 while (!atomic_read(&reply->received)) { 2198 if (time_after(jiffies, timeout)) 2199 goto time_err; 2200 cpu_relax(); 2201 } 2202 } 2203 2204 rc = reply->rc; 2205 qeth_put_reply(reply); 2206 return rc; 2207 2208 time_err: 2209 reply->rc = -ETIME; 2210 spin_lock_irqsave(&reply->card->lock, flags); 2211 list_del_init(&reply->list); 2212 spin_unlock_irqrestore(&reply->card->lock, flags); 2213 atomic_inc(&reply->received); 2214 rc = reply->rc; 2215 qeth_put_reply(reply); 2216 return rc; 2217 } 2218 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2219 2220 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2221 unsigned long data) 2222 { 2223 struct qeth_cmd_buffer *iob; 2224 2225 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2226 2227 iob = (struct qeth_cmd_buffer *) data; 2228 memcpy(&card->token.cm_filter_r, 2229 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2230 QETH_MPC_TOKEN_LENGTH); 2231 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2232 return 0; 2233 } 2234 2235 static int qeth_cm_enable(struct qeth_card *card) 2236 { 2237 int rc; 2238 struct qeth_cmd_buffer *iob; 2239 2240 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2241 2242 iob = qeth_wait_for_buffer(&card->write); 2243 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2244 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2245 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2246 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2247 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2248 2249 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2250 qeth_cm_enable_cb, NULL); 2251 return rc; 2252 } 2253 2254 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2255 unsigned long data) 2256 { 2257 2258 struct qeth_cmd_buffer *iob; 2259 2260 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2261 2262 iob = (struct qeth_cmd_buffer *) data; 2263 memcpy(&card->token.cm_connection_r, 2264 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2265 QETH_MPC_TOKEN_LENGTH); 2266 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2267 return 0; 2268 } 2269 2270 static int qeth_cm_setup(struct qeth_card *card) 2271 { 2272 int rc; 2273 struct qeth_cmd_buffer *iob; 2274 2275 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2276 2277 iob = qeth_wait_for_buffer(&card->write); 2278 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2279 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2280 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2281 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2282 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2283 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2284 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2285 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2286 qeth_cm_setup_cb, NULL); 2287 return rc; 2288 2289 } 2290 2291 static int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2292 { 2293 switch (card->info.type) { 2294 case QETH_CARD_TYPE_IQD: 2295 return card->info.max_mtu; 2296 case QETH_CARD_TYPE_OSD: 2297 case QETH_CARD_TYPE_OSX: 2298 if (!card->options.layer2) 2299 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */ 2300 /* fall through */ 2301 default: 2302 return ETH_DATA_LEN; 2303 } 2304 } 2305 2306 static int qeth_get_mtu_outof_framesize(int framesize) 2307 { 2308 switch (framesize) { 2309 case 0x4000: 2310 return 8192; 2311 case 0x6000: 2312 return 16384; 2313 case 0xa000: 2314 return 32768; 2315 case 0xffff: 2316 return 57344; 2317 default: 2318 return 0; 2319 } 2320 } 2321 2322 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2323 { 2324 switch (card->info.type) { 2325 case QETH_CARD_TYPE_OSD: 2326 case QETH_CARD_TYPE_OSM: 2327 case QETH_CARD_TYPE_OSX: 2328 case QETH_CARD_TYPE_IQD: 2329 return ((mtu >= 576) && 2330 (mtu <= card->info.max_mtu)); 2331 case QETH_CARD_TYPE_OSN: 2332 default: 2333 return 1; 2334 } 2335 } 2336 2337 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2338 unsigned long data) 2339 { 2340 2341 __u16 mtu, framesize; 2342 __u16 len; 2343 __u8 link_type; 2344 struct qeth_cmd_buffer *iob; 2345 2346 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2347 2348 iob = (struct qeth_cmd_buffer *) data; 2349 memcpy(&card->token.ulp_filter_r, 2350 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2351 QETH_MPC_TOKEN_LENGTH); 2352 if (card->info.type == QETH_CARD_TYPE_IQD) { 2353 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2354 mtu = qeth_get_mtu_outof_framesize(framesize); 2355 if (!mtu) { 2356 iob->rc = -EINVAL; 2357 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2358 return 0; 2359 } 2360 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2361 /* frame size has changed */ 2362 if (card->dev && 2363 ((card->dev->mtu == card->info.initial_mtu) || 2364 (card->dev->mtu > mtu))) 2365 card->dev->mtu = mtu; 2366 qeth_free_qdio_buffers(card); 2367 } 2368 card->info.initial_mtu = mtu; 2369 card->info.max_mtu = mtu; 2370 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2371 } else { 2372 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2373 iob->data); 2374 card->info.initial_mtu = min(card->info.max_mtu, 2375 qeth_get_initial_mtu_for_card(card)); 2376 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2377 } 2378 2379 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2380 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2381 memcpy(&link_type, 2382 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2383 card->info.link_type = link_type; 2384 } else 2385 card->info.link_type = 0; 2386 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2387 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2388 return 0; 2389 } 2390 2391 static int qeth_ulp_enable(struct qeth_card *card) 2392 { 2393 int rc; 2394 char prot_type; 2395 struct qeth_cmd_buffer *iob; 2396 2397 /*FIXME: trace view callbacks*/ 2398 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2399 2400 iob = qeth_wait_for_buffer(&card->write); 2401 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2402 2403 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2404 (__u8) card->info.portno; 2405 if (card->options.layer2) 2406 if (card->info.type == QETH_CARD_TYPE_OSN) 2407 prot_type = QETH_PROT_OSN2; 2408 else 2409 prot_type = QETH_PROT_LAYER2; 2410 else 2411 prot_type = QETH_PROT_TCPIP; 2412 2413 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2414 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2415 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2416 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2417 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2418 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2419 qeth_ulp_enable_cb, NULL); 2420 return rc; 2421 2422 } 2423 2424 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2425 unsigned long data) 2426 { 2427 struct qeth_cmd_buffer *iob; 2428 2429 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2430 2431 iob = (struct qeth_cmd_buffer *) data; 2432 memcpy(&card->token.ulp_connection_r, 2433 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2434 QETH_MPC_TOKEN_LENGTH); 2435 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2436 3)) { 2437 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2438 dev_err(&card->gdev->dev, "A connection could not be " 2439 "established because of an OLM limit\n"); 2440 iob->rc = -EMLINK; 2441 } 2442 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2443 return 0; 2444 } 2445 2446 static int qeth_ulp_setup(struct qeth_card *card) 2447 { 2448 int rc; 2449 __u16 temp; 2450 struct qeth_cmd_buffer *iob; 2451 struct ccw_dev_id dev_id; 2452 2453 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2454 2455 iob = qeth_wait_for_buffer(&card->write); 2456 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2457 2458 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2459 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2460 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2461 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2462 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2463 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2464 2465 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2466 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2467 temp = (card->info.cula << 8) + card->info.unit_addr2; 2468 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2469 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2470 qeth_ulp_setup_cb, NULL); 2471 return rc; 2472 } 2473 2474 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2475 { 2476 int rc; 2477 struct qeth_qdio_out_buffer *newbuf; 2478 2479 rc = 0; 2480 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2481 if (!newbuf) { 2482 rc = -ENOMEM; 2483 goto out; 2484 } 2485 newbuf->buffer = q->qdio_bufs[bidx]; 2486 skb_queue_head_init(&newbuf->skb_list); 2487 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2488 newbuf->q = q; 2489 newbuf->aob = NULL; 2490 newbuf->next_pending = q->bufs[bidx]; 2491 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2492 q->bufs[bidx] = newbuf; 2493 if (q->bufstates) { 2494 q->bufstates[bidx].user = newbuf; 2495 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2496 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2497 QETH_CARD_TEXT_(q->card, 2, "%lx", 2498 (long) newbuf->next_pending); 2499 } 2500 out: 2501 return rc; 2502 } 2503 2504 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2505 { 2506 if (!q) 2507 return; 2508 2509 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2510 kfree(q); 2511 } 2512 2513 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2514 { 2515 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2516 2517 if (!q) 2518 return NULL; 2519 2520 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2521 kfree(q); 2522 return NULL; 2523 } 2524 return q; 2525 } 2526 2527 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2528 { 2529 int i, j; 2530 2531 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2532 2533 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2534 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2535 return 0; 2536 2537 QETH_DBF_TEXT(SETUP, 2, "inq"); 2538 card->qdio.in_q = qeth_alloc_qdio_queue(); 2539 if (!card->qdio.in_q) 2540 goto out_nomem; 2541 2542 /* inbound buffer pool */ 2543 if (qeth_alloc_buffer_pool(card)) 2544 goto out_freeinq; 2545 2546 /* outbound */ 2547 card->qdio.out_qs = 2548 kcalloc(card->qdio.no_out_queues, 2549 sizeof(struct qeth_qdio_out_q *), 2550 GFP_KERNEL); 2551 if (!card->qdio.out_qs) 2552 goto out_freepool; 2553 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2554 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2555 if (!card->qdio.out_qs[i]) 2556 goto out_freeoutq; 2557 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2558 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2559 card->qdio.out_qs[i]->queue_no = i; 2560 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2561 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2562 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2563 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2564 goto out_freeoutqbufs; 2565 } 2566 } 2567 2568 /* completion */ 2569 if (qeth_alloc_cq(card)) 2570 goto out_freeoutq; 2571 2572 return 0; 2573 2574 out_freeoutqbufs: 2575 while (j > 0) { 2576 --j; 2577 kmem_cache_free(qeth_qdio_outbuf_cache, 2578 card->qdio.out_qs[i]->bufs[j]); 2579 card->qdio.out_qs[i]->bufs[j] = NULL; 2580 } 2581 out_freeoutq: 2582 while (i > 0) { 2583 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2584 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2585 } 2586 kfree(card->qdio.out_qs); 2587 card->qdio.out_qs = NULL; 2588 out_freepool: 2589 qeth_free_buffer_pool(card); 2590 out_freeinq: 2591 qeth_free_qdio_queue(card->qdio.in_q); 2592 card->qdio.in_q = NULL; 2593 out_nomem: 2594 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2595 return -ENOMEM; 2596 } 2597 2598 static void qeth_free_qdio_buffers(struct qeth_card *card) 2599 { 2600 int i, j; 2601 2602 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2603 QETH_QDIO_UNINITIALIZED) 2604 return; 2605 2606 qeth_free_cq(card); 2607 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2608 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2609 if (card->qdio.in_q->bufs[j].rx_skb) 2610 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2611 } 2612 qeth_free_qdio_queue(card->qdio.in_q); 2613 card->qdio.in_q = NULL; 2614 /* inbound buffer pool */ 2615 qeth_free_buffer_pool(card); 2616 /* free outbound qdio_qs */ 2617 if (card->qdio.out_qs) { 2618 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2619 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2620 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2621 } 2622 kfree(card->qdio.out_qs); 2623 card->qdio.out_qs = NULL; 2624 } 2625 } 2626 2627 static void qeth_create_qib_param_field(struct qeth_card *card, 2628 char *param_field) 2629 { 2630 2631 param_field[0] = _ascebc['P']; 2632 param_field[1] = _ascebc['C']; 2633 param_field[2] = _ascebc['I']; 2634 param_field[3] = _ascebc['T']; 2635 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2636 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2637 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2638 } 2639 2640 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2641 char *param_field) 2642 { 2643 param_field[16] = _ascebc['B']; 2644 param_field[17] = _ascebc['L']; 2645 param_field[18] = _ascebc['K']; 2646 param_field[19] = _ascebc['T']; 2647 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2648 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2649 *((unsigned int *) (¶m_field[28])) = 2650 card->info.blkt.inter_packet_jumbo; 2651 } 2652 2653 static int qeth_qdio_activate(struct qeth_card *card) 2654 { 2655 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2656 return qdio_activate(CARD_DDEV(card)); 2657 } 2658 2659 static int qeth_dm_act(struct qeth_card *card) 2660 { 2661 int rc; 2662 struct qeth_cmd_buffer *iob; 2663 2664 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2665 2666 iob = qeth_wait_for_buffer(&card->write); 2667 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2668 2669 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2670 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2671 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2672 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2673 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2674 return rc; 2675 } 2676 2677 static int qeth_mpc_initialize(struct qeth_card *card) 2678 { 2679 int rc; 2680 2681 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2682 2683 rc = qeth_issue_next_read(card); 2684 if (rc) { 2685 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2686 return rc; 2687 } 2688 rc = qeth_cm_enable(card); 2689 if (rc) { 2690 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2691 goto out_qdio; 2692 } 2693 rc = qeth_cm_setup(card); 2694 if (rc) { 2695 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2696 goto out_qdio; 2697 } 2698 rc = qeth_ulp_enable(card); 2699 if (rc) { 2700 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2701 goto out_qdio; 2702 } 2703 rc = qeth_ulp_setup(card); 2704 if (rc) { 2705 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2706 goto out_qdio; 2707 } 2708 rc = qeth_alloc_qdio_buffers(card); 2709 if (rc) { 2710 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2711 goto out_qdio; 2712 } 2713 rc = qeth_qdio_establish(card); 2714 if (rc) { 2715 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2716 qeth_free_qdio_buffers(card); 2717 goto out_qdio; 2718 } 2719 rc = qeth_qdio_activate(card); 2720 if (rc) { 2721 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2722 goto out_qdio; 2723 } 2724 rc = qeth_dm_act(card); 2725 if (rc) { 2726 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2727 goto out_qdio; 2728 } 2729 2730 return 0; 2731 out_qdio: 2732 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2733 qdio_free(CARD_DDEV(card)); 2734 return rc; 2735 } 2736 2737 void qeth_print_status_message(struct qeth_card *card) 2738 { 2739 switch (card->info.type) { 2740 case QETH_CARD_TYPE_OSD: 2741 case QETH_CARD_TYPE_OSM: 2742 case QETH_CARD_TYPE_OSX: 2743 /* VM will use a non-zero first character 2744 * to indicate a HiperSockets like reporting 2745 * of the level OSA sets the first character to zero 2746 * */ 2747 if (!card->info.mcl_level[0]) { 2748 sprintf(card->info.mcl_level, "%02x%02x", 2749 card->info.mcl_level[2], 2750 card->info.mcl_level[3]); 2751 break; 2752 } 2753 /* fallthrough */ 2754 case QETH_CARD_TYPE_IQD: 2755 if ((card->info.guestlan) || 2756 (card->info.mcl_level[0] & 0x80)) { 2757 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2758 card->info.mcl_level[0]]; 2759 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2760 card->info.mcl_level[1]]; 2761 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2762 card->info.mcl_level[2]]; 2763 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2764 card->info.mcl_level[3]]; 2765 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2766 } 2767 break; 2768 default: 2769 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2770 } 2771 dev_info(&card->gdev->dev, 2772 "Device is a%s card%s%s%s\nwith link type %s.\n", 2773 qeth_get_cardname(card), 2774 (card->info.mcl_level[0]) ? " (level: " : "", 2775 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2776 (card->info.mcl_level[0]) ? ")" : "", 2777 qeth_get_cardname_short(card)); 2778 } 2779 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2780 2781 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2782 { 2783 struct qeth_buffer_pool_entry *entry; 2784 2785 QETH_CARD_TEXT(card, 5, "inwrklst"); 2786 2787 list_for_each_entry(entry, 2788 &card->qdio.init_pool.entry_list, init_list) { 2789 qeth_put_buffer_pool_entry(card, entry); 2790 } 2791 } 2792 2793 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2794 struct qeth_card *card) 2795 { 2796 struct list_head *plh; 2797 struct qeth_buffer_pool_entry *entry; 2798 int i, free; 2799 struct page *page; 2800 2801 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2802 return NULL; 2803 2804 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2805 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2806 free = 1; 2807 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2808 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2809 free = 0; 2810 break; 2811 } 2812 } 2813 if (free) { 2814 list_del_init(&entry->list); 2815 return entry; 2816 } 2817 } 2818 2819 /* no free buffer in pool so take first one and swap pages */ 2820 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2821 struct qeth_buffer_pool_entry, list); 2822 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2823 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2824 page = alloc_page(GFP_ATOMIC); 2825 if (!page) { 2826 return NULL; 2827 } else { 2828 free_page((unsigned long)entry->elements[i]); 2829 entry->elements[i] = page_address(page); 2830 if (card->options.performance_stats) 2831 card->perf_stats.sg_alloc_page_rx++; 2832 } 2833 } 2834 } 2835 list_del_init(&entry->list); 2836 return entry; 2837 } 2838 2839 static int qeth_init_input_buffer(struct qeth_card *card, 2840 struct qeth_qdio_buffer *buf) 2841 { 2842 struct qeth_buffer_pool_entry *pool_entry; 2843 int i; 2844 2845 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2846 buf->rx_skb = netdev_alloc_skb(card->dev, 2847 QETH_RX_PULL_LEN + ETH_HLEN); 2848 if (!buf->rx_skb) 2849 return 1; 2850 } 2851 2852 pool_entry = qeth_find_free_buffer_pool_entry(card); 2853 if (!pool_entry) 2854 return 1; 2855 2856 /* 2857 * since the buffer is accessed only from the input_tasklet 2858 * there shouldn't be a need to synchronize; also, since we use 2859 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2860 * buffers 2861 */ 2862 2863 buf->pool_entry = pool_entry; 2864 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2865 buf->buffer->element[i].length = PAGE_SIZE; 2866 buf->buffer->element[i].addr = pool_entry->elements[i]; 2867 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2868 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2869 else 2870 buf->buffer->element[i].eflags = 0; 2871 buf->buffer->element[i].sflags = 0; 2872 } 2873 return 0; 2874 } 2875 2876 int qeth_init_qdio_queues(struct qeth_card *card) 2877 { 2878 int i, j; 2879 int rc; 2880 2881 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2882 2883 /* inbound queue */ 2884 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2885 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2886 qeth_initialize_working_pool_list(card); 2887 /*give only as many buffers to hardware as we have buffer pool entries*/ 2888 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2889 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2890 card->qdio.in_q->next_buf_to_init = 2891 card->qdio.in_buf_pool.buf_count - 1; 2892 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2893 card->qdio.in_buf_pool.buf_count - 1); 2894 if (rc) { 2895 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2896 return rc; 2897 } 2898 2899 /* completion */ 2900 rc = qeth_cq_init(card); 2901 if (rc) { 2902 return rc; 2903 } 2904 2905 /* outbound queue */ 2906 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2907 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2908 QDIO_MAX_BUFFERS_PER_Q); 2909 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2910 qeth_clear_output_buffer(card->qdio.out_qs[i], 2911 card->qdio.out_qs[i]->bufs[j], 2912 QETH_QDIO_BUF_EMPTY); 2913 } 2914 card->qdio.out_qs[i]->card = card; 2915 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2916 card->qdio.out_qs[i]->do_pack = 0; 2917 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2918 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2919 atomic_set(&card->qdio.out_qs[i]->state, 2920 QETH_OUT_Q_UNLOCKED); 2921 } 2922 return 0; 2923 } 2924 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2925 2926 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2927 { 2928 switch (link_type) { 2929 case QETH_LINK_TYPE_HSTR: 2930 return 2; 2931 default: 2932 return 1; 2933 } 2934 } 2935 2936 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2937 struct qeth_ipa_cmd *cmd, __u8 command, 2938 enum qeth_prot_versions prot) 2939 { 2940 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2941 cmd->hdr.command = command; 2942 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2943 /* cmd->hdr.seqno is set by qeth_send_control_data() */ 2944 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2945 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2946 if (card->options.layer2) 2947 cmd->hdr.prim_version_no = 2; 2948 else 2949 cmd->hdr.prim_version_no = 1; 2950 cmd->hdr.param_count = 1; 2951 cmd->hdr.prot_version = prot; 2952 cmd->hdr.ipa_supported = 0; 2953 cmd->hdr.ipa_enabled = 0; 2954 } 2955 2956 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2957 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2958 { 2959 struct qeth_cmd_buffer *iob; 2960 2961 iob = qeth_get_buffer(&card->write); 2962 if (iob) { 2963 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot); 2964 } else { 2965 dev_warn(&card->gdev->dev, 2966 "The qeth driver ran out of channel command buffers\n"); 2967 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2968 dev_name(&card->gdev->dev)); 2969 } 2970 2971 return iob; 2972 } 2973 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2974 2975 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2976 char prot_type) 2977 { 2978 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2979 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2980 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2981 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2982 } 2983 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2984 2985 /** 2986 * qeth_send_ipa_cmd() - send an IPA command 2987 * 2988 * See qeth_send_control_data() for explanation of the arguments. 2989 */ 2990 2991 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2992 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2993 unsigned long), 2994 void *reply_param) 2995 { 2996 int rc; 2997 char prot_type; 2998 2999 QETH_CARD_TEXT(card, 4, "sendipa"); 3000 3001 if (card->options.layer2) 3002 if (card->info.type == QETH_CARD_TYPE_OSN) 3003 prot_type = QETH_PROT_OSN2; 3004 else 3005 prot_type = QETH_PROT_LAYER2; 3006 else 3007 prot_type = QETH_PROT_TCPIP; 3008 qeth_prepare_ipa_cmd(card, iob, prot_type); 3009 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 3010 iob, reply_cb, reply_param); 3011 if (rc == -ETIME) { 3012 qeth_clear_ipacmd_list(card); 3013 qeth_schedule_recovery(card); 3014 } 3015 return rc; 3016 } 3017 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 3018 3019 static int qeth_send_startlan(struct qeth_card *card) 3020 { 3021 int rc; 3022 struct qeth_cmd_buffer *iob; 3023 3024 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 3025 3026 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 3027 if (!iob) 3028 return -ENOMEM; 3029 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 3030 return rc; 3031 } 3032 3033 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 3034 { 3035 if (!cmd->hdr.return_code) 3036 cmd->hdr.return_code = 3037 cmd->data.setadapterparms.hdr.return_code; 3038 return cmd->hdr.return_code; 3039 } 3040 3041 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 3042 struct qeth_reply *reply, unsigned long data) 3043 { 3044 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3045 3046 QETH_CARD_TEXT(card, 3, "quyadpcb"); 3047 if (qeth_setadpparms_inspect_rc(cmd)) 3048 return 0; 3049 3050 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 3051 card->info.link_type = 3052 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 3053 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 3054 } 3055 card->options.adp.supported_funcs = 3056 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 3057 return 0; 3058 } 3059 3060 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 3061 __u32 command, __u32 cmdlen) 3062 { 3063 struct qeth_cmd_buffer *iob; 3064 struct qeth_ipa_cmd *cmd; 3065 3066 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3067 QETH_PROT_IPV4); 3068 if (iob) { 3069 cmd = __ipa_cmd(iob); 3070 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3071 cmd->data.setadapterparms.hdr.command_code = command; 3072 cmd->data.setadapterparms.hdr.used_total = 1; 3073 cmd->data.setadapterparms.hdr.seq_no = 1; 3074 } 3075 3076 return iob; 3077 } 3078 3079 int qeth_query_setadapterparms(struct qeth_card *card) 3080 { 3081 int rc; 3082 struct qeth_cmd_buffer *iob; 3083 3084 QETH_CARD_TEXT(card, 3, "queryadp"); 3085 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3086 sizeof(struct qeth_ipacmd_setadpparms)); 3087 if (!iob) 3088 return -ENOMEM; 3089 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3090 return rc; 3091 } 3092 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3093 3094 static int qeth_query_ipassists_cb(struct qeth_card *card, 3095 struct qeth_reply *reply, unsigned long data) 3096 { 3097 struct qeth_ipa_cmd *cmd; 3098 3099 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3100 3101 cmd = (struct qeth_ipa_cmd *) data; 3102 3103 switch (cmd->hdr.return_code) { 3104 case IPA_RC_NOTSUPP: 3105 case IPA_RC_L2_UNSUPPORTED_CMD: 3106 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3107 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3108 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3109 return -0; 3110 default: 3111 if (cmd->hdr.return_code) { 3112 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3113 "rc=%d\n", 3114 dev_name(&card->gdev->dev), 3115 cmd->hdr.return_code); 3116 return 0; 3117 } 3118 } 3119 3120 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3121 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3122 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3123 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3124 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3125 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3126 } else 3127 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3128 "\n", dev_name(&card->gdev->dev)); 3129 return 0; 3130 } 3131 3132 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3133 { 3134 int rc; 3135 struct qeth_cmd_buffer *iob; 3136 3137 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3138 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3139 if (!iob) 3140 return -ENOMEM; 3141 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3142 return rc; 3143 } 3144 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3145 3146 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3147 struct qeth_reply *reply, unsigned long data) 3148 { 3149 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3150 struct qeth_query_switch_attributes *attrs; 3151 struct qeth_switch_info *sw_info; 3152 3153 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3154 if (qeth_setadpparms_inspect_rc(cmd)) 3155 return 0; 3156 3157 sw_info = (struct qeth_switch_info *)reply->param; 3158 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3159 sw_info->capabilities = attrs->capabilities; 3160 sw_info->settings = attrs->settings; 3161 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3162 sw_info->settings); 3163 return 0; 3164 } 3165 3166 int qeth_query_switch_attributes(struct qeth_card *card, 3167 struct qeth_switch_info *sw_info) 3168 { 3169 struct qeth_cmd_buffer *iob; 3170 3171 QETH_CARD_TEXT(card, 2, "qswiattr"); 3172 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3173 return -EOPNOTSUPP; 3174 if (!netif_carrier_ok(card->dev)) 3175 return -ENOMEDIUM; 3176 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3177 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3178 if (!iob) 3179 return -ENOMEM; 3180 return qeth_send_ipa_cmd(card, iob, 3181 qeth_query_switch_attributes_cb, sw_info); 3182 } 3183 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3184 3185 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3186 struct qeth_reply *reply, unsigned long data) 3187 { 3188 struct qeth_ipa_cmd *cmd; 3189 __u16 rc; 3190 3191 cmd = (struct qeth_ipa_cmd *)data; 3192 rc = cmd->hdr.return_code; 3193 if (rc) 3194 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3195 else 3196 card->info.diagass_support = cmd->data.diagass.ext; 3197 return 0; 3198 } 3199 3200 static int qeth_query_setdiagass(struct qeth_card *card) 3201 { 3202 struct qeth_cmd_buffer *iob; 3203 struct qeth_ipa_cmd *cmd; 3204 3205 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3206 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3207 if (!iob) 3208 return -ENOMEM; 3209 cmd = __ipa_cmd(iob); 3210 cmd->data.diagass.subcmd_len = 16; 3211 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3212 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3213 } 3214 3215 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3216 { 3217 unsigned long info = get_zeroed_page(GFP_KERNEL); 3218 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3219 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3220 struct ccw_dev_id ccwid; 3221 int level; 3222 3223 tid->chpid = card->info.chpid; 3224 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3225 tid->ssid = ccwid.ssid; 3226 tid->devno = ccwid.devno; 3227 if (!info) 3228 return; 3229 level = stsi(NULL, 0, 0, 0); 3230 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3231 tid->lparnr = info222->lpar_number; 3232 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3233 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3234 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3235 } 3236 free_page(info); 3237 return; 3238 } 3239 3240 static int qeth_hw_trap_cb(struct qeth_card *card, 3241 struct qeth_reply *reply, unsigned long data) 3242 { 3243 struct qeth_ipa_cmd *cmd; 3244 __u16 rc; 3245 3246 cmd = (struct qeth_ipa_cmd *)data; 3247 rc = cmd->hdr.return_code; 3248 if (rc) 3249 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3250 return 0; 3251 } 3252 3253 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3254 { 3255 struct qeth_cmd_buffer *iob; 3256 struct qeth_ipa_cmd *cmd; 3257 3258 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3259 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3260 if (!iob) 3261 return -ENOMEM; 3262 cmd = __ipa_cmd(iob); 3263 cmd->data.diagass.subcmd_len = 80; 3264 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3265 cmd->data.diagass.type = 1; 3266 cmd->data.diagass.action = action; 3267 switch (action) { 3268 case QETH_DIAGS_TRAP_ARM: 3269 cmd->data.diagass.options = 0x0003; 3270 cmd->data.diagass.ext = 0x00010000 + 3271 sizeof(struct qeth_trap_id); 3272 qeth_get_trap_id(card, 3273 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3274 break; 3275 case QETH_DIAGS_TRAP_DISARM: 3276 cmd->data.diagass.options = 0x0001; 3277 break; 3278 case QETH_DIAGS_TRAP_CAPTURE: 3279 break; 3280 } 3281 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3282 } 3283 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3284 3285 static int qeth_check_qdio_errors(struct qeth_card *card, 3286 struct qdio_buffer *buf, 3287 unsigned int qdio_error, 3288 const char *dbftext) 3289 { 3290 if (qdio_error) { 3291 QETH_CARD_TEXT(card, 2, dbftext); 3292 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3293 buf->element[15].sflags); 3294 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3295 buf->element[14].sflags); 3296 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3297 if ((buf->element[15].sflags) == 0x12) { 3298 card->stats.rx_dropped++; 3299 return 0; 3300 } else 3301 return 1; 3302 } 3303 return 0; 3304 } 3305 3306 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3307 { 3308 struct qeth_qdio_q *queue = card->qdio.in_q; 3309 struct list_head *lh; 3310 int count; 3311 int i; 3312 int rc; 3313 int newcount = 0; 3314 3315 count = (index < queue->next_buf_to_init)? 3316 card->qdio.in_buf_pool.buf_count - 3317 (queue->next_buf_to_init - index) : 3318 card->qdio.in_buf_pool.buf_count - 3319 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3320 /* only requeue at a certain threshold to avoid SIGAs */ 3321 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3322 for (i = queue->next_buf_to_init; 3323 i < queue->next_buf_to_init + count; ++i) { 3324 if (qeth_init_input_buffer(card, 3325 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3326 break; 3327 } else { 3328 newcount++; 3329 } 3330 } 3331 3332 if (newcount < count) { 3333 /* we are in memory shortage so we switch back to 3334 traditional skb allocation and drop packages */ 3335 atomic_set(&card->force_alloc_skb, 3); 3336 count = newcount; 3337 } else { 3338 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3339 } 3340 3341 if (!count) { 3342 i = 0; 3343 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3344 i++; 3345 if (i == card->qdio.in_buf_pool.buf_count) { 3346 QETH_CARD_TEXT(card, 2, "qsarbw"); 3347 card->reclaim_index = index; 3348 schedule_delayed_work( 3349 &card->buffer_reclaim_work, 3350 QETH_RECLAIM_WORK_TIME); 3351 } 3352 return; 3353 } 3354 3355 /* 3356 * according to old code it should be avoided to requeue all 3357 * 128 buffers in order to benefit from PCI avoidance. 3358 * this function keeps at least one buffer (the buffer at 3359 * 'index') un-requeued -> this buffer is the first buffer that 3360 * will be requeued the next time 3361 */ 3362 if (card->options.performance_stats) { 3363 card->perf_stats.inbound_do_qdio_cnt++; 3364 card->perf_stats.inbound_do_qdio_start_time = 3365 qeth_get_micros(); 3366 } 3367 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3368 queue->next_buf_to_init, count); 3369 if (card->options.performance_stats) 3370 card->perf_stats.inbound_do_qdio_time += 3371 qeth_get_micros() - 3372 card->perf_stats.inbound_do_qdio_start_time; 3373 if (rc) { 3374 QETH_CARD_TEXT(card, 2, "qinberr"); 3375 } 3376 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3377 QDIO_MAX_BUFFERS_PER_Q; 3378 } 3379 } 3380 3381 static void qeth_buffer_reclaim_work(struct work_struct *work) 3382 { 3383 struct qeth_card *card = container_of(work, struct qeth_card, 3384 buffer_reclaim_work.work); 3385 3386 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3387 qeth_queue_input_buffer(card, card->reclaim_index); 3388 } 3389 3390 static void qeth_handle_send_error(struct qeth_card *card, 3391 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3392 { 3393 int sbalf15 = buffer->buffer->element[15].sflags; 3394 3395 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3396 if (card->info.type == QETH_CARD_TYPE_IQD) { 3397 if (sbalf15 == 0) { 3398 qdio_err = 0; 3399 } else { 3400 qdio_err = 1; 3401 } 3402 } 3403 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3404 3405 if (!qdio_err) 3406 return; 3407 3408 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3409 return; 3410 3411 QETH_CARD_TEXT(card, 1, "lnkfail"); 3412 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3413 (u16)qdio_err, (u8)sbalf15); 3414 } 3415 3416 /** 3417 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3418 * @queue: queue to check for packing buffer 3419 * 3420 * Returns number of buffers that were prepared for flush. 3421 */ 3422 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3423 { 3424 struct qeth_qdio_out_buffer *buffer; 3425 3426 buffer = queue->bufs[queue->next_buf_to_fill]; 3427 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3428 (buffer->next_element_to_fill > 0)) { 3429 /* it's a packing buffer */ 3430 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3431 queue->next_buf_to_fill = 3432 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3433 return 1; 3434 } 3435 return 0; 3436 } 3437 3438 /* 3439 * Switched to packing state if the number of used buffers on a queue 3440 * reaches a certain limit. 3441 */ 3442 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3443 { 3444 if (!queue->do_pack) { 3445 if (atomic_read(&queue->used_buffers) 3446 >= QETH_HIGH_WATERMARK_PACK){ 3447 /* switch non-PACKING -> PACKING */ 3448 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3449 if (queue->card->options.performance_stats) 3450 queue->card->perf_stats.sc_dp_p++; 3451 queue->do_pack = 1; 3452 } 3453 } 3454 } 3455 3456 /* 3457 * Switches from packing to non-packing mode. If there is a packing 3458 * buffer on the queue this buffer will be prepared to be flushed. 3459 * In that case 1 is returned to inform the caller. If no buffer 3460 * has to be flushed, zero is returned. 3461 */ 3462 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3463 { 3464 if (queue->do_pack) { 3465 if (atomic_read(&queue->used_buffers) 3466 <= QETH_LOW_WATERMARK_PACK) { 3467 /* switch PACKING -> non-PACKING */ 3468 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3469 if (queue->card->options.performance_stats) 3470 queue->card->perf_stats.sc_p_dp++; 3471 queue->do_pack = 0; 3472 return qeth_prep_flush_pack_buffer(queue); 3473 } 3474 } 3475 return 0; 3476 } 3477 3478 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3479 int count) 3480 { 3481 struct qeth_qdio_out_buffer *buf; 3482 int rc; 3483 int i; 3484 unsigned int qdio_flags; 3485 3486 for (i = index; i < index + count; ++i) { 3487 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3488 buf = queue->bufs[bidx]; 3489 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3490 SBAL_EFLAGS_LAST_ENTRY; 3491 3492 if (queue->bufstates) 3493 queue->bufstates[bidx].user = buf; 3494 3495 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3496 continue; 3497 3498 if (!queue->do_pack) { 3499 if ((atomic_read(&queue->used_buffers) >= 3500 (QETH_HIGH_WATERMARK_PACK - 3501 QETH_WATERMARK_PACK_FUZZ)) && 3502 !atomic_read(&queue->set_pci_flags_count)) { 3503 /* it's likely that we'll go to packing 3504 * mode soon */ 3505 atomic_inc(&queue->set_pci_flags_count); 3506 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3507 } 3508 } else { 3509 if (!atomic_read(&queue->set_pci_flags_count)) { 3510 /* 3511 * there's no outstanding PCI any more, so we 3512 * have to request a PCI to be sure the the PCI 3513 * will wake at some time in the future then we 3514 * can flush packed buffers that might still be 3515 * hanging around, which can happen if no 3516 * further send was requested by the stack 3517 */ 3518 atomic_inc(&queue->set_pci_flags_count); 3519 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3520 } 3521 } 3522 } 3523 3524 netif_trans_update(queue->card->dev); 3525 if (queue->card->options.performance_stats) { 3526 queue->card->perf_stats.outbound_do_qdio_cnt++; 3527 queue->card->perf_stats.outbound_do_qdio_start_time = 3528 qeth_get_micros(); 3529 } 3530 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3531 if (atomic_read(&queue->set_pci_flags_count)) 3532 qdio_flags |= QDIO_FLAG_PCI_OUT; 3533 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3534 queue->queue_no, index, count); 3535 if (queue->card->options.performance_stats) 3536 queue->card->perf_stats.outbound_do_qdio_time += 3537 qeth_get_micros() - 3538 queue->card->perf_stats.outbound_do_qdio_start_time; 3539 atomic_add(count, &queue->used_buffers); 3540 if (rc) { 3541 queue->card->stats.tx_errors += count; 3542 /* ignore temporary SIGA errors without busy condition */ 3543 if (rc == -ENOBUFS) 3544 return; 3545 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3546 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3547 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3548 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3549 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3550 3551 /* this must not happen under normal circumstances. if it 3552 * happens something is really wrong -> recover */ 3553 qeth_schedule_recovery(queue->card); 3554 return; 3555 } 3556 if (queue->card->options.performance_stats) 3557 queue->card->perf_stats.bufs_sent += count; 3558 } 3559 3560 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3561 { 3562 int index; 3563 int flush_cnt = 0; 3564 int q_was_packing = 0; 3565 3566 /* 3567 * check if weed have to switch to non-packing mode or if 3568 * we have to get a pci flag out on the queue 3569 */ 3570 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3571 !atomic_read(&queue->set_pci_flags_count)) { 3572 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3573 QETH_OUT_Q_UNLOCKED) { 3574 /* 3575 * If we get in here, there was no action in 3576 * do_send_packet. So, we check if there is a 3577 * packing buffer to be flushed here. 3578 */ 3579 netif_stop_queue(queue->card->dev); 3580 index = queue->next_buf_to_fill; 3581 q_was_packing = queue->do_pack; 3582 /* queue->do_pack may change */ 3583 barrier(); 3584 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3585 if (!flush_cnt && 3586 !atomic_read(&queue->set_pci_flags_count)) 3587 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3588 if (queue->card->options.performance_stats && 3589 q_was_packing) 3590 queue->card->perf_stats.bufs_sent_pack += 3591 flush_cnt; 3592 if (flush_cnt) 3593 qeth_flush_buffers(queue, index, flush_cnt); 3594 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3595 } 3596 } 3597 } 3598 3599 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3600 unsigned long card_ptr) 3601 { 3602 struct qeth_card *card = (struct qeth_card *)card_ptr; 3603 3604 if (card->dev && (card->dev->flags & IFF_UP)) 3605 napi_schedule(&card->napi); 3606 } 3607 3608 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3609 { 3610 int rc; 3611 3612 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3613 rc = -1; 3614 goto out; 3615 } else { 3616 if (card->options.cq == cq) { 3617 rc = 0; 3618 goto out; 3619 } 3620 3621 if (card->state != CARD_STATE_DOWN && 3622 card->state != CARD_STATE_RECOVER) { 3623 rc = -1; 3624 goto out; 3625 } 3626 3627 qeth_free_qdio_buffers(card); 3628 card->options.cq = cq; 3629 rc = 0; 3630 } 3631 out: 3632 return rc; 3633 3634 } 3635 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3636 3637 3638 static void qeth_qdio_cq_handler(struct qeth_card *card, 3639 unsigned int qdio_err, 3640 unsigned int queue, int first_element, int count) { 3641 struct qeth_qdio_q *cq = card->qdio.c_q; 3642 int i; 3643 int rc; 3644 3645 if (!qeth_is_cq(card, queue)) 3646 goto out; 3647 3648 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3649 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3650 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3651 3652 if (qdio_err) { 3653 netif_stop_queue(card->dev); 3654 qeth_schedule_recovery(card); 3655 goto out; 3656 } 3657 3658 if (card->options.performance_stats) { 3659 card->perf_stats.cq_cnt++; 3660 card->perf_stats.cq_start_time = qeth_get_micros(); 3661 } 3662 3663 for (i = first_element; i < first_element + count; ++i) { 3664 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3665 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3666 int e; 3667 3668 e = 0; 3669 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3670 buffer->element[e].addr) { 3671 unsigned long phys_aob_addr; 3672 3673 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3674 qeth_qdio_handle_aob(card, phys_aob_addr); 3675 buffer->element[e].addr = NULL; 3676 buffer->element[e].eflags = 0; 3677 buffer->element[e].sflags = 0; 3678 buffer->element[e].length = 0; 3679 3680 ++e; 3681 } 3682 3683 buffer->element[15].eflags = 0; 3684 buffer->element[15].sflags = 0; 3685 } 3686 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3687 card->qdio.c_q->next_buf_to_init, 3688 count); 3689 if (rc) { 3690 dev_warn(&card->gdev->dev, 3691 "QDIO reported an error, rc=%i\n", rc); 3692 QETH_CARD_TEXT(card, 2, "qcqherr"); 3693 } 3694 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3695 + count) % QDIO_MAX_BUFFERS_PER_Q; 3696 3697 netif_wake_queue(card->dev); 3698 3699 if (card->options.performance_stats) { 3700 int delta_t = qeth_get_micros(); 3701 delta_t -= card->perf_stats.cq_start_time; 3702 card->perf_stats.cq_time += delta_t; 3703 } 3704 out: 3705 return; 3706 } 3707 3708 static void qeth_qdio_input_handler(struct ccw_device *ccwdev, 3709 unsigned int qdio_err, int queue, 3710 int first_elem, int count, 3711 unsigned long card_ptr) 3712 { 3713 struct qeth_card *card = (struct qeth_card *)card_ptr; 3714 3715 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3716 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3717 3718 if (qeth_is_cq(card, queue)) 3719 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3720 else if (qdio_err) 3721 qeth_schedule_recovery(card); 3722 } 3723 3724 static void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3725 unsigned int qdio_error, int __queue, 3726 int first_element, int count, 3727 unsigned long card_ptr) 3728 { 3729 struct qeth_card *card = (struct qeth_card *) card_ptr; 3730 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3731 struct qeth_qdio_out_buffer *buffer; 3732 int i; 3733 3734 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3735 if (qdio_error & QDIO_ERROR_FATAL) { 3736 QETH_CARD_TEXT(card, 2, "achkcond"); 3737 netif_stop_queue(card->dev); 3738 qeth_schedule_recovery(card); 3739 return; 3740 } 3741 if (card->options.performance_stats) { 3742 card->perf_stats.outbound_handler_cnt++; 3743 card->perf_stats.outbound_handler_start_time = 3744 qeth_get_micros(); 3745 } 3746 for (i = first_element; i < (first_element + count); ++i) { 3747 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3748 buffer = queue->bufs[bidx]; 3749 qeth_handle_send_error(card, buffer, qdio_error); 3750 3751 if (queue->bufstates && 3752 (queue->bufstates[bidx].flags & 3753 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3754 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3755 3756 if (atomic_cmpxchg(&buffer->state, 3757 QETH_QDIO_BUF_PRIMED, 3758 QETH_QDIO_BUF_PENDING) == 3759 QETH_QDIO_BUF_PRIMED) { 3760 qeth_notify_skbs(queue, buffer, 3761 TX_NOTIFY_PENDING); 3762 } 3763 buffer->aob = queue->bufstates[bidx].aob; 3764 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3765 QETH_CARD_TEXT(queue->card, 5, "aob"); 3766 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3767 virt_to_phys(buffer->aob)); 3768 3769 /* prepare the queue slot for re-use: */ 3770 qeth_scrub_qdio_buffer(buffer->buffer, 3771 QETH_MAX_BUFFER_ELEMENTS(card)); 3772 if (qeth_init_qdio_out_buf(queue, bidx)) { 3773 QETH_CARD_TEXT(card, 2, "outofbuf"); 3774 qeth_schedule_recovery(card); 3775 } 3776 } else { 3777 if (card->options.cq == QETH_CQ_ENABLED) { 3778 enum iucv_tx_notify n; 3779 3780 n = qeth_compute_cq_notification( 3781 buffer->buffer->element[15].sflags, 0); 3782 qeth_notify_skbs(queue, buffer, n); 3783 } 3784 3785 qeth_clear_output_buffer(queue, buffer, 3786 QETH_QDIO_BUF_EMPTY); 3787 } 3788 qeth_cleanup_handled_pending(queue, bidx, 0); 3789 } 3790 atomic_sub(count, &queue->used_buffers); 3791 /* check if we need to do something on this outbound queue */ 3792 if (card->info.type != QETH_CARD_TYPE_IQD) 3793 qeth_check_outbound_queue(queue); 3794 3795 netif_wake_queue(queue->card->dev); 3796 if (card->options.performance_stats) 3797 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3798 card->perf_stats.outbound_handler_start_time; 3799 } 3800 3801 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3802 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3803 { 3804 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3805 return 2; 3806 return queue_num; 3807 } 3808 3809 /** 3810 * Note: Function assumes that we have 4 outbound queues. 3811 */ 3812 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3813 int ipv, int cast_type) 3814 { 3815 __be16 *tci; 3816 u8 tos; 3817 3818 if (cast_type && card->info.is_multicast_different) 3819 return card->info.is_multicast_different & 3820 (card->qdio.no_out_queues - 1); 3821 3822 switch (card->qdio.do_prio_queueing) { 3823 case QETH_PRIO_Q_ING_TOS: 3824 case QETH_PRIO_Q_ING_PREC: 3825 switch (ipv) { 3826 case 4: 3827 tos = ipv4_get_dsfield(ip_hdr(skb)); 3828 break; 3829 case 6: 3830 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3831 break; 3832 default: 3833 return card->qdio.default_out_queue; 3834 } 3835 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3836 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3837 if (tos & IPTOS_MINCOST) 3838 return qeth_cut_iqd_prio(card, 3); 3839 if (tos & IPTOS_RELIABILITY) 3840 return 2; 3841 if (tos & IPTOS_THROUGHPUT) 3842 return 1; 3843 if (tos & IPTOS_LOWDELAY) 3844 return 0; 3845 break; 3846 case QETH_PRIO_Q_ING_SKB: 3847 if (skb->priority > 5) 3848 return 0; 3849 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3850 case QETH_PRIO_Q_ING_VLAN: 3851 tci = &((struct ethhdr *)skb->data)->h_proto; 3852 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3853 return qeth_cut_iqd_prio(card, 3854 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3855 break; 3856 default: 3857 break; 3858 } 3859 return card->qdio.default_out_queue; 3860 } 3861 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3862 3863 /** 3864 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3865 * @skb: SKB address 3866 * 3867 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3868 * fragmented part of the SKB. Returns zero for linear SKB. 3869 */ 3870 int qeth_get_elements_for_frags(struct sk_buff *skb) 3871 { 3872 int cnt, elements = 0; 3873 3874 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3875 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3876 3877 elements += qeth_get_elements_for_range( 3878 (addr_t)skb_frag_address(frag), 3879 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3880 } 3881 return elements; 3882 } 3883 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3884 3885 /** 3886 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3887 * @card: qeth card structure, to check max. elems. 3888 * @skb: SKB address 3889 * @extra_elems: extra elems needed, to check against max. 3890 * @data_offset: range starts at skb->data + data_offset 3891 * 3892 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3893 * skb data, including linear part and fragments. Checks if the result plus 3894 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3895 * Note: extra_elems is not included in the returned result. 3896 */ 3897 int qeth_get_elements_no(struct qeth_card *card, 3898 struct sk_buff *skb, int extra_elems, int data_offset) 3899 { 3900 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3901 int elements = qeth_get_elements_for_frags(skb); 3902 addr_t start = (addr_t)skb->data + data_offset; 3903 3904 if (start != end) 3905 elements += qeth_get_elements_for_range(start, end); 3906 3907 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3908 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3909 "(Number=%d / Length=%d). Discarded.\n", 3910 elements + extra_elems, skb->len); 3911 return 0; 3912 } 3913 return elements; 3914 } 3915 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3916 3917 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3918 { 3919 int hroom, inpage, rest; 3920 3921 if (((unsigned long)skb->data & PAGE_MASK) != 3922 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3923 hroom = skb_headroom(skb); 3924 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3925 rest = len - inpage; 3926 if (rest > hroom) 3927 return 1; 3928 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3929 skb->data -= rest; 3930 skb->tail -= rest; 3931 *hdr = (struct qeth_hdr *)skb->data; 3932 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3933 } 3934 return 0; 3935 } 3936 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3937 3938 /** 3939 * qeth_push_hdr() - push a qeth_hdr onto an skb. 3940 * @skb: skb that the qeth_hdr should be pushed onto. 3941 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3942 * it contains a valid pointer to a qeth_hdr. 3943 * @len: length of the hdr that needs to be pushed on. 3944 * 3945 * Returns the pushed length. If the header can't be pushed on 3946 * (eg. because it would cross a page boundary), it is allocated from 3947 * the cache instead and 0 is returned. 3948 * Error to create the hdr is indicated by returning with < 0. 3949 */ 3950 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len) 3951 { 3952 if (skb_headroom(skb) >= len && 3953 qeth_get_elements_for_range((addr_t)skb->data - len, 3954 (addr_t)skb->data) == 1) { 3955 *hdr = skb_push(skb, len); 3956 return len; 3957 } 3958 /* fall back */ 3959 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3960 if (!*hdr) 3961 return -ENOMEM; 3962 return 0; 3963 } 3964 EXPORT_SYMBOL_GPL(qeth_push_hdr); 3965 3966 static void __qeth_fill_buffer(struct sk_buff *skb, 3967 struct qeth_qdio_out_buffer *buf, 3968 bool is_first_elem, unsigned int offset) 3969 { 3970 struct qdio_buffer *buffer = buf->buffer; 3971 int element = buf->next_element_to_fill; 3972 int length = skb_headlen(skb) - offset; 3973 char *data = skb->data + offset; 3974 int length_here, cnt; 3975 3976 /* map linear part into buffer element(s) */ 3977 while (length > 0) { 3978 /* length_here is the remaining amount of data in this page */ 3979 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3980 if (length < length_here) 3981 length_here = length; 3982 3983 buffer->element[element].addr = data; 3984 buffer->element[element].length = length_here; 3985 length -= length_here; 3986 if (is_first_elem) { 3987 is_first_elem = false; 3988 if (length || skb_is_nonlinear(skb)) 3989 /* skb needs additional elements */ 3990 buffer->element[element].eflags = 3991 SBAL_EFLAGS_FIRST_FRAG; 3992 else 3993 buffer->element[element].eflags = 0; 3994 } else { 3995 buffer->element[element].eflags = 3996 SBAL_EFLAGS_MIDDLE_FRAG; 3997 } 3998 data += length_here; 3999 element++; 4000 } 4001 4002 /* map page frags into buffer element(s) */ 4003 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 4004 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 4005 4006 data = skb_frag_address(frag); 4007 length = skb_frag_size(frag); 4008 while (length > 0) { 4009 length_here = PAGE_SIZE - 4010 ((unsigned long) data % PAGE_SIZE); 4011 if (length < length_here) 4012 length_here = length; 4013 4014 buffer->element[element].addr = data; 4015 buffer->element[element].length = length_here; 4016 buffer->element[element].eflags = 4017 SBAL_EFLAGS_MIDDLE_FRAG; 4018 length -= length_here; 4019 data += length_here; 4020 element++; 4021 } 4022 } 4023 4024 if (buffer->element[element - 1].eflags) 4025 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 4026 buf->next_element_to_fill = element; 4027 } 4028 4029 /** 4030 * qeth_fill_buffer() - map skb into an output buffer 4031 * @queue: QDIO queue to submit the buffer on 4032 * @buf: buffer to transport the skb 4033 * @skb: skb to map into the buffer 4034 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 4035 * from qeth_core_header_cache. 4036 * @offset: when mapping the skb, start at skb->data + offset 4037 * @hd_len: if > 0, build a dedicated header element of this size 4038 */ 4039 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 4040 struct qeth_qdio_out_buffer *buf, 4041 struct sk_buff *skb, struct qeth_hdr *hdr, 4042 unsigned int offset, unsigned int hd_len) 4043 { 4044 struct qdio_buffer *buffer = buf->buffer; 4045 bool is_first_elem = true; 4046 int flush_cnt = 0; 4047 4048 refcount_inc(&skb->users); 4049 skb_queue_tail(&buf->skb_list, skb); 4050 4051 /* build dedicated header element */ 4052 if (hd_len) { 4053 int element = buf->next_element_to_fill; 4054 is_first_elem = false; 4055 4056 buffer->element[element].addr = hdr; 4057 buffer->element[element].length = hd_len; 4058 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4059 /* remember to free cache-allocated qeth_hdr: */ 4060 buf->is_header[element] = ((void *)hdr != skb->data); 4061 buf->next_element_to_fill++; 4062 } 4063 4064 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 4065 4066 if (!queue->do_pack) { 4067 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4068 /* set state to PRIMED -> will be flushed */ 4069 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4070 flush_cnt = 1; 4071 } else { 4072 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4073 if (queue->card->options.performance_stats) 4074 queue->card->perf_stats.skbs_sent_pack++; 4075 if (buf->next_element_to_fill >= 4076 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4077 /* 4078 * packed buffer if full -> set state PRIMED 4079 * -> will be flushed 4080 */ 4081 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4082 flush_cnt = 1; 4083 } 4084 } 4085 return flush_cnt; 4086 } 4087 4088 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4089 struct qeth_hdr *hdr, unsigned int offset, 4090 unsigned int hd_len) 4091 { 4092 int index = queue->next_buf_to_fill; 4093 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 4094 4095 /* 4096 * check if buffer is empty to make sure that we do not 'overtake' 4097 * ourselves and try to fill a buffer that is already primed 4098 */ 4099 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4100 return -EBUSY; 4101 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 4102 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4103 qeth_flush_buffers(queue, index, 1); 4104 return 0; 4105 } 4106 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4107 4108 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4109 struct sk_buff *skb, struct qeth_hdr *hdr, 4110 unsigned int offset, unsigned int hd_len, 4111 int elements_needed) 4112 { 4113 struct qeth_qdio_out_buffer *buffer; 4114 int start_index; 4115 int flush_count = 0; 4116 int do_pack = 0; 4117 int tmp; 4118 int rc = 0; 4119 4120 /* spin until we get the queue ... */ 4121 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4122 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4123 start_index = queue->next_buf_to_fill; 4124 buffer = queue->bufs[queue->next_buf_to_fill]; 4125 /* 4126 * check if buffer is empty to make sure that we do not 'overtake' 4127 * ourselves and try to fill a buffer that is already primed 4128 */ 4129 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4130 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4131 return -EBUSY; 4132 } 4133 /* check if we need to switch packing state of this queue */ 4134 qeth_switch_to_packing_if_needed(queue); 4135 if (queue->do_pack) { 4136 do_pack = 1; 4137 /* does packet fit in current buffer? */ 4138 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4139 buffer->next_element_to_fill) < elements_needed) { 4140 /* ... no -> set state PRIMED */ 4141 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4142 flush_count++; 4143 queue->next_buf_to_fill = 4144 (queue->next_buf_to_fill + 1) % 4145 QDIO_MAX_BUFFERS_PER_Q; 4146 buffer = queue->bufs[queue->next_buf_to_fill]; 4147 /* we did a step forward, so check buffer state 4148 * again */ 4149 if (atomic_read(&buffer->state) != 4150 QETH_QDIO_BUF_EMPTY) { 4151 qeth_flush_buffers(queue, start_index, 4152 flush_count); 4153 atomic_set(&queue->state, 4154 QETH_OUT_Q_UNLOCKED); 4155 rc = -EBUSY; 4156 goto out; 4157 } 4158 } 4159 } 4160 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4161 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4162 QDIO_MAX_BUFFERS_PER_Q; 4163 flush_count += tmp; 4164 if (flush_count) 4165 qeth_flush_buffers(queue, start_index, flush_count); 4166 else if (!atomic_read(&queue->set_pci_flags_count)) 4167 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4168 /* 4169 * queue->state will go from LOCKED -> UNLOCKED or from 4170 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4171 * (switch packing state or flush buffer to get another pci flag out). 4172 * In that case we will enter this loop 4173 */ 4174 while (atomic_dec_return(&queue->state)) { 4175 start_index = queue->next_buf_to_fill; 4176 /* check if we can go back to non-packing state */ 4177 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4178 /* 4179 * check if we need to flush a packing buffer to get a pci 4180 * flag out on the queue 4181 */ 4182 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4183 tmp = qeth_prep_flush_pack_buffer(queue); 4184 if (tmp) { 4185 qeth_flush_buffers(queue, start_index, tmp); 4186 flush_count += tmp; 4187 } 4188 } 4189 out: 4190 /* at this point the queue is UNLOCKED again */ 4191 if (queue->card->options.performance_stats && do_pack) 4192 queue->card->perf_stats.bufs_sent_pack += flush_count; 4193 4194 return rc; 4195 } 4196 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4197 4198 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4199 struct qeth_reply *reply, unsigned long data) 4200 { 4201 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4202 struct qeth_ipacmd_setadpparms *setparms; 4203 4204 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4205 4206 setparms = &(cmd->data.setadapterparms); 4207 if (qeth_setadpparms_inspect_rc(cmd)) { 4208 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4209 setparms->data.mode = SET_PROMISC_MODE_OFF; 4210 } 4211 card->info.promisc_mode = setparms->data.mode; 4212 return 0; 4213 } 4214 4215 void qeth_setadp_promisc_mode(struct qeth_card *card) 4216 { 4217 enum qeth_ipa_promisc_modes mode; 4218 struct net_device *dev = card->dev; 4219 struct qeth_cmd_buffer *iob; 4220 struct qeth_ipa_cmd *cmd; 4221 4222 QETH_CARD_TEXT(card, 4, "setprom"); 4223 4224 if (((dev->flags & IFF_PROMISC) && 4225 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4226 (!(dev->flags & IFF_PROMISC) && 4227 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4228 return; 4229 mode = SET_PROMISC_MODE_OFF; 4230 if (dev->flags & IFF_PROMISC) 4231 mode = SET_PROMISC_MODE_ON; 4232 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4233 4234 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4235 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4236 if (!iob) 4237 return; 4238 cmd = __ipa_cmd(iob); 4239 cmd->data.setadapterparms.data.mode = mode; 4240 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4241 } 4242 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4243 4244 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4245 { 4246 struct qeth_card *card; 4247 char dbf_text[15]; 4248 4249 card = dev->ml_priv; 4250 4251 QETH_CARD_TEXT(card, 4, "chgmtu"); 4252 sprintf(dbf_text, "%8x", new_mtu); 4253 QETH_CARD_TEXT(card, 4, dbf_text); 4254 4255 if (!qeth_mtu_is_valid(card, new_mtu)) 4256 return -EINVAL; 4257 dev->mtu = new_mtu; 4258 return 0; 4259 } 4260 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4261 4262 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4263 { 4264 struct qeth_card *card; 4265 4266 card = dev->ml_priv; 4267 4268 QETH_CARD_TEXT(card, 5, "getstat"); 4269 4270 return &card->stats; 4271 } 4272 EXPORT_SYMBOL_GPL(qeth_get_stats); 4273 4274 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4275 struct qeth_reply *reply, unsigned long data) 4276 { 4277 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4278 4279 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4280 if (qeth_setadpparms_inspect_rc(cmd)) 4281 return 0; 4282 4283 if (!card->options.layer2 || 4284 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4285 ether_addr_copy(card->dev->dev_addr, 4286 cmd->data.setadapterparms.data.change_addr.addr); 4287 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4288 } 4289 return 0; 4290 } 4291 4292 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4293 { 4294 int rc; 4295 struct qeth_cmd_buffer *iob; 4296 struct qeth_ipa_cmd *cmd; 4297 4298 QETH_CARD_TEXT(card, 4, "chgmac"); 4299 4300 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4301 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4302 sizeof(struct qeth_change_addr)); 4303 if (!iob) 4304 return -ENOMEM; 4305 cmd = __ipa_cmd(iob); 4306 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4307 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4308 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4309 card->dev->dev_addr); 4310 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4311 NULL); 4312 return rc; 4313 } 4314 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4315 4316 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4317 struct qeth_reply *reply, unsigned long data) 4318 { 4319 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4320 struct qeth_set_access_ctrl *access_ctrl_req; 4321 int fallback = *(int *)reply->param; 4322 4323 QETH_CARD_TEXT(card, 4, "setaccb"); 4324 if (cmd->hdr.return_code) 4325 return 0; 4326 qeth_setadpparms_inspect_rc(cmd); 4327 4328 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4329 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4330 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4331 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4332 cmd->data.setadapterparms.hdr.return_code); 4333 if (cmd->data.setadapterparms.hdr.return_code != 4334 SET_ACCESS_CTRL_RC_SUCCESS) 4335 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4336 card->gdev->dev.kobj.name, 4337 access_ctrl_req->subcmd_code, 4338 cmd->data.setadapterparms.hdr.return_code); 4339 switch (cmd->data.setadapterparms.hdr.return_code) { 4340 case SET_ACCESS_CTRL_RC_SUCCESS: 4341 if (card->options.isolation == ISOLATION_MODE_NONE) { 4342 dev_info(&card->gdev->dev, 4343 "QDIO data connection isolation is deactivated\n"); 4344 } else { 4345 dev_info(&card->gdev->dev, 4346 "QDIO data connection isolation is activated\n"); 4347 } 4348 break; 4349 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4350 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4351 "deactivated\n", dev_name(&card->gdev->dev)); 4352 if (fallback) 4353 card->options.isolation = card->options.prev_isolation; 4354 break; 4355 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4356 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4357 " activated\n", dev_name(&card->gdev->dev)); 4358 if (fallback) 4359 card->options.isolation = card->options.prev_isolation; 4360 break; 4361 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4362 dev_err(&card->gdev->dev, "Adapter does not " 4363 "support QDIO data connection isolation\n"); 4364 break; 4365 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4366 dev_err(&card->gdev->dev, 4367 "Adapter is dedicated. " 4368 "QDIO data connection isolation not supported\n"); 4369 if (fallback) 4370 card->options.isolation = card->options.prev_isolation; 4371 break; 4372 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4373 dev_err(&card->gdev->dev, 4374 "TSO does not permit QDIO data connection isolation\n"); 4375 if (fallback) 4376 card->options.isolation = card->options.prev_isolation; 4377 break; 4378 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4379 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4380 "support reflective relay mode\n"); 4381 if (fallback) 4382 card->options.isolation = card->options.prev_isolation; 4383 break; 4384 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4385 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4386 "enabled at the adjacent switch port"); 4387 if (fallback) 4388 card->options.isolation = card->options.prev_isolation; 4389 break; 4390 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4391 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4392 "at the adjacent switch failed\n"); 4393 break; 4394 default: 4395 /* this should never happen */ 4396 if (fallback) 4397 card->options.isolation = card->options.prev_isolation; 4398 break; 4399 } 4400 return 0; 4401 } 4402 4403 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4404 enum qeth_ipa_isolation_modes isolation, int fallback) 4405 { 4406 int rc; 4407 struct qeth_cmd_buffer *iob; 4408 struct qeth_ipa_cmd *cmd; 4409 struct qeth_set_access_ctrl *access_ctrl_req; 4410 4411 QETH_CARD_TEXT(card, 4, "setacctl"); 4412 4413 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4414 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4415 4416 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4417 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4418 sizeof(struct qeth_set_access_ctrl)); 4419 if (!iob) 4420 return -ENOMEM; 4421 cmd = __ipa_cmd(iob); 4422 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4423 access_ctrl_req->subcmd_code = isolation; 4424 4425 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4426 &fallback); 4427 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4428 return rc; 4429 } 4430 4431 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4432 { 4433 int rc = 0; 4434 4435 QETH_CARD_TEXT(card, 4, "setactlo"); 4436 4437 if ((card->info.type == QETH_CARD_TYPE_OSD || 4438 card->info.type == QETH_CARD_TYPE_OSX) && 4439 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4440 rc = qeth_setadpparms_set_access_ctrl(card, 4441 card->options.isolation, fallback); 4442 if (rc) { 4443 QETH_DBF_MESSAGE(3, 4444 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4445 card->gdev->dev.kobj.name, 4446 rc); 4447 rc = -EOPNOTSUPP; 4448 } 4449 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4450 card->options.isolation = ISOLATION_MODE_NONE; 4451 4452 dev_err(&card->gdev->dev, "Adapter does not " 4453 "support QDIO data connection isolation\n"); 4454 rc = -EOPNOTSUPP; 4455 } 4456 return rc; 4457 } 4458 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4459 4460 void qeth_tx_timeout(struct net_device *dev) 4461 { 4462 struct qeth_card *card; 4463 4464 card = dev->ml_priv; 4465 QETH_CARD_TEXT(card, 4, "txtimeo"); 4466 card->stats.tx_errors++; 4467 qeth_schedule_recovery(card); 4468 } 4469 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4470 4471 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4472 { 4473 struct qeth_card *card = dev->ml_priv; 4474 int rc = 0; 4475 4476 switch (regnum) { 4477 case MII_BMCR: /* Basic mode control register */ 4478 rc = BMCR_FULLDPLX; 4479 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4480 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4481 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4482 rc |= BMCR_SPEED100; 4483 break; 4484 case MII_BMSR: /* Basic mode status register */ 4485 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4486 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4487 BMSR_100BASE4; 4488 break; 4489 case MII_PHYSID1: /* PHYS ID 1 */ 4490 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4491 dev->dev_addr[2]; 4492 rc = (rc >> 5) & 0xFFFF; 4493 break; 4494 case MII_PHYSID2: /* PHYS ID 2 */ 4495 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4496 break; 4497 case MII_ADVERTISE: /* Advertisement control reg */ 4498 rc = ADVERTISE_ALL; 4499 break; 4500 case MII_LPA: /* Link partner ability reg */ 4501 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4502 LPA_100BASE4 | LPA_LPACK; 4503 break; 4504 case MII_EXPANSION: /* Expansion register */ 4505 break; 4506 case MII_DCOUNTER: /* disconnect counter */ 4507 break; 4508 case MII_FCSCOUNTER: /* false carrier counter */ 4509 break; 4510 case MII_NWAYTEST: /* N-way auto-neg test register */ 4511 break; 4512 case MII_RERRCOUNTER: /* rx error counter */ 4513 rc = card->stats.rx_errors; 4514 break; 4515 case MII_SREVISION: /* silicon revision */ 4516 break; 4517 case MII_RESV1: /* reserved 1 */ 4518 break; 4519 case MII_LBRERROR: /* loopback, rx, bypass error */ 4520 break; 4521 case MII_PHYADDR: /* physical address */ 4522 break; 4523 case MII_RESV2: /* reserved 2 */ 4524 break; 4525 case MII_TPISTATUS: /* TPI status for 10mbps */ 4526 break; 4527 case MII_NCONFIG: /* network interface config */ 4528 break; 4529 default: 4530 break; 4531 } 4532 return rc; 4533 } 4534 4535 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4536 struct qeth_cmd_buffer *iob, int len, 4537 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4538 unsigned long), 4539 void *reply_param) 4540 { 4541 u16 s1, s2; 4542 4543 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4544 4545 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4546 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4547 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4548 /* adjust PDU length fields in IPA_PDU_HEADER */ 4549 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4550 s2 = (u32) len; 4551 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4552 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4553 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4554 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4555 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4556 reply_cb, reply_param); 4557 } 4558 4559 static int qeth_snmp_command_cb(struct qeth_card *card, 4560 struct qeth_reply *reply, unsigned long sdata) 4561 { 4562 struct qeth_ipa_cmd *cmd; 4563 struct qeth_arp_query_info *qinfo; 4564 struct qeth_snmp_cmd *snmp; 4565 unsigned char *data; 4566 __u16 data_len; 4567 4568 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4569 4570 cmd = (struct qeth_ipa_cmd *) sdata; 4571 data = (unsigned char *)((char *)cmd - reply->offset); 4572 qinfo = (struct qeth_arp_query_info *) reply->param; 4573 snmp = &cmd->data.setadapterparms.data.snmp; 4574 4575 if (cmd->hdr.return_code) { 4576 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4577 return 0; 4578 } 4579 if (cmd->data.setadapterparms.hdr.return_code) { 4580 cmd->hdr.return_code = 4581 cmd->data.setadapterparms.hdr.return_code; 4582 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4583 return 0; 4584 } 4585 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4586 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4587 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4588 else 4589 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4590 4591 /* check if there is enough room in userspace */ 4592 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4593 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4594 cmd->hdr.return_code = IPA_RC_ENOMEM; 4595 return 0; 4596 } 4597 QETH_CARD_TEXT_(card, 4, "snore%i", 4598 cmd->data.setadapterparms.hdr.used_total); 4599 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4600 cmd->data.setadapterparms.hdr.seq_no); 4601 /*copy entries to user buffer*/ 4602 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4603 memcpy(qinfo->udata + qinfo->udata_offset, 4604 (char *)snmp, 4605 data_len + offsetof(struct qeth_snmp_cmd, data)); 4606 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4607 } else { 4608 memcpy(qinfo->udata + qinfo->udata_offset, 4609 (char *)&snmp->request, data_len); 4610 } 4611 qinfo->udata_offset += data_len; 4612 /* check if all replies received ... */ 4613 QETH_CARD_TEXT_(card, 4, "srtot%i", 4614 cmd->data.setadapterparms.hdr.used_total); 4615 QETH_CARD_TEXT_(card, 4, "srseq%i", 4616 cmd->data.setadapterparms.hdr.seq_no); 4617 if (cmd->data.setadapterparms.hdr.seq_no < 4618 cmd->data.setadapterparms.hdr.used_total) 4619 return 1; 4620 return 0; 4621 } 4622 4623 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4624 { 4625 struct qeth_cmd_buffer *iob; 4626 struct qeth_ipa_cmd *cmd; 4627 struct qeth_snmp_ureq *ureq; 4628 unsigned int req_len; 4629 struct qeth_arp_query_info qinfo = {0, }; 4630 int rc = 0; 4631 4632 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4633 4634 if (card->info.guestlan) 4635 return -EOPNOTSUPP; 4636 4637 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4638 (!card->options.layer2)) { 4639 return -EOPNOTSUPP; 4640 } 4641 /* skip 4 bytes (data_len struct member) to get req_len */ 4642 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4643 return -EFAULT; 4644 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4645 sizeof(struct qeth_ipacmd_hdr) - 4646 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4647 return -EINVAL; 4648 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4649 if (IS_ERR(ureq)) { 4650 QETH_CARD_TEXT(card, 2, "snmpnome"); 4651 return PTR_ERR(ureq); 4652 } 4653 qinfo.udata_len = ureq->hdr.data_len; 4654 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4655 if (!qinfo.udata) { 4656 kfree(ureq); 4657 return -ENOMEM; 4658 } 4659 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4660 4661 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4662 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4663 if (!iob) { 4664 rc = -ENOMEM; 4665 goto out; 4666 } 4667 cmd = __ipa_cmd(iob); 4668 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4669 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4670 qeth_snmp_command_cb, (void *)&qinfo); 4671 if (rc) 4672 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4673 QETH_CARD_IFNAME(card), rc); 4674 else { 4675 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4676 rc = -EFAULT; 4677 } 4678 out: 4679 kfree(ureq); 4680 kfree(qinfo.udata); 4681 return rc; 4682 } 4683 4684 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4685 struct qeth_reply *reply, unsigned long data) 4686 { 4687 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4688 struct qeth_qoat_priv *priv; 4689 char *resdata; 4690 int resdatalen; 4691 4692 QETH_CARD_TEXT(card, 3, "qoatcb"); 4693 if (qeth_setadpparms_inspect_rc(cmd)) 4694 return 0; 4695 4696 priv = (struct qeth_qoat_priv *)reply->param; 4697 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4698 resdata = (char *)data + 28; 4699 4700 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4701 cmd->hdr.return_code = IPA_RC_FFFF; 4702 return 0; 4703 } 4704 4705 memcpy((priv->buffer + priv->response_len), resdata, 4706 resdatalen); 4707 priv->response_len += resdatalen; 4708 4709 if (cmd->data.setadapterparms.hdr.seq_no < 4710 cmd->data.setadapterparms.hdr.used_total) 4711 return 1; 4712 return 0; 4713 } 4714 4715 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4716 { 4717 int rc = 0; 4718 struct qeth_cmd_buffer *iob; 4719 struct qeth_ipa_cmd *cmd; 4720 struct qeth_query_oat *oat_req; 4721 struct qeth_query_oat_data oat_data; 4722 struct qeth_qoat_priv priv; 4723 void __user *tmp; 4724 4725 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4726 4727 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4728 rc = -EOPNOTSUPP; 4729 goto out; 4730 } 4731 4732 if (copy_from_user(&oat_data, udata, 4733 sizeof(struct qeth_query_oat_data))) { 4734 rc = -EFAULT; 4735 goto out; 4736 } 4737 4738 priv.buffer_len = oat_data.buffer_len; 4739 priv.response_len = 0; 4740 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4741 if (!priv.buffer) { 4742 rc = -ENOMEM; 4743 goto out; 4744 } 4745 4746 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4747 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4748 sizeof(struct qeth_query_oat)); 4749 if (!iob) { 4750 rc = -ENOMEM; 4751 goto out_free; 4752 } 4753 cmd = __ipa_cmd(iob); 4754 oat_req = &cmd->data.setadapterparms.data.query_oat; 4755 oat_req->subcmd_code = oat_data.command; 4756 4757 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4758 &priv); 4759 if (!rc) { 4760 if (is_compat_task()) 4761 tmp = compat_ptr(oat_data.ptr); 4762 else 4763 tmp = (void __user *)(unsigned long)oat_data.ptr; 4764 4765 if (copy_to_user(tmp, priv.buffer, 4766 priv.response_len)) { 4767 rc = -EFAULT; 4768 goto out_free; 4769 } 4770 4771 oat_data.response_len = priv.response_len; 4772 4773 if (copy_to_user(udata, &oat_data, 4774 sizeof(struct qeth_query_oat_data))) 4775 rc = -EFAULT; 4776 } else 4777 if (rc == IPA_RC_FFFF) 4778 rc = -EFAULT; 4779 4780 out_free: 4781 kfree(priv.buffer); 4782 out: 4783 return rc; 4784 } 4785 4786 static int qeth_query_card_info_cb(struct qeth_card *card, 4787 struct qeth_reply *reply, unsigned long data) 4788 { 4789 struct carrier_info *carrier_info = (struct carrier_info *)reply->param; 4790 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4791 struct qeth_query_card_info *card_info; 4792 4793 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4794 if (qeth_setadpparms_inspect_rc(cmd)) 4795 return 0; 4796 4797 card_info = &cmd->data.setadapterparms.data.card_info; 4798 carrier_info->card_type = card_info->card_type; 4799 carrier_info->port_mode = card_info->port_mode; 4800 carrier_info->port_speed = card_info->port_speed; 4801 return 0; 4802 } 4803 4804 static int qeth_query_card_info(struct qeth_card *card, 4805 struct carrier_info *carrier_info) 4806 { 4807 struct qeth_cmd_buffer *iob; 4808 4809 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4810 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4811 return -EOPNOTSUPP; 4812 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4813 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4814 if (!iob) 4815 return -ENOMEM; 4816 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4817 (void *)carrier_info); 4818 } 4819 4820 /** 4821 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4822 * @card: pointer to a qeth_card 4823 * 4824 * Returns 4825 * 0, if a MAC address has been set for the card's netdevice 4826 * a return code, for various error conditions 4827 */ 4828 int qeth_vm_request_mac(struct qeth_card *card) 4829 { 4830 struct diag26c_mac_resp *response; 4831 struct diag26c_mac_req *request; 4832 struct ccw_dev_id id; 4833 int rc; 4834 4835 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4836 4837 if (!card->dev) 4838 return -ENODEV; 4839 4840 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4841 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4842 if (!request || !response) { 4843 rc = -ENOMEM; 4844 goto out; 4845 } 4846 4847 ccw_device_get_id(CARD_DDEV(card), &id); 4848 request->resp_buf_len = sizeof(*response); 4849 request->resp_version = DIAG26C_VERSION2; 4850 request->op_code = DIAG26C_GET_MAC; 4851 request->devno = id.devno; 4852 4853 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4854 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4855 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4856 if (rc) 4857 goto out; 4858 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4859 4860 if (request->resp_buf_len < sizeof(*response) || 4861 response->version != request->resp_version) { 4862 rc = -EIO; 4863 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4864 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4865 sizeof(request->resp_buf_len)); 4866 } else if (!is_valid_ether_addr(response->mac)) { 4867 rc = -EINVAL; 4868 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4869 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4870 } else { 4871 ether_addr_copy(card->dev->dev_addr, response->mac); 4872 } 4873 4874 out: 4875 kfree(response); 4876 kfree(request); 4877 return rc; 4878 } 4879 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4880 4881 static int qeth_get_qdio_q_format(struct qeth_card *card) 4882 { 4883 if (card->info.type == QETH_CARD_TYPE_IQD) 4884 return QDIO_IQDIO_QFMT; 4885 else 4886 return QDIO_QETH_QFMT; 4887 } 4888 4889 static void qeth_determine_capabilities(struct qeth_card *card) 4890 { 4891 int rc; 4892 int length; 4893 char *prcd; 4894 struct ccw_device *ddev; 4895 int ddev_offline = 0; 4896 4897 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4898 ddev = CARD_DDEV(card); 4899 if (!ddev->online) { 4900 ddev_offline = 1; 4901 rc = ccw_device_set_online(ddev); 4902 if (rc) { 4903 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4904 goto out; 4905 } 4906 } 4907 4908 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4909 if (rc) { 4910 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4911 dev_name(&card->gdev->dev), rc); 4912 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4913 goto out_offline; 4914 } 4915 qeth_configure_unitaddr(card, prcd); 4916 if (ddev_offline) 4917 qeth_configure_blkt_default(card, prcd); 4918 kfree(prcd); 4919 4920 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4921 if (rc) 4922 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4923 4924 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4925 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4926 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4927 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4928 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4929 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4930 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4931 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4932 dev_info(&card->gdev->dev, 4933 "Completion Queueing supported\n"); 4934 } else { 4935 card->options.cq = QETH_CQ_NOTAVAILABLE; 4936 } 4937 4938 4939 out_offline: 4940 if (ddev_offline == 1) 4941 ccw_device_set_offline(ddev); 4942 out: 4943 return; 4944 } 4945 4946 static void qeth_qdio_establish_cq(struct qeth_card *card, 4947 struct qdio_buffer **in_sbal_ptrs, 4948 void (**queue_start_poll) 4949 (struct ccw_device *, int, 4950 unsigned long)) 4951 { 4952 int i; 4953 4954 if (card->options.cq == QETH_CQ_ENABLED) { 4955 int offset = QDIO_MAX_BUFFERS_PER_Q * 4956 (card->qdio.no_in_queues - 1); 4957 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4958 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4959 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4960 } 4961 4962 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4963 } 4964 } 4965 4966 static int qeth_qdio_establish(struct qeth_card *card) 4967 { 4968 struct qdio_initialize init_data; 4969 char *qib_param_field; 4970 struct qdio_buffer **in_sbal_ptrs; 4971 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4972 struct qdio_buffer **out_sbal_ptrs; 4973 int i, j, k; 4974 int rc = 0; 4975 4976 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4977 4978 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q, 4979 GFP_KERNEL); 4980 if (!qib_param_field) { 4981 rc = -ENOMEM; 4982 goto out_free_nothing; 4983 } 4984 4985 qeth_create_qib_param_field(card, qib_param_field); 4986 qeth_create_qib_param_field_blkt(card, qib_param_field); 4987 4988 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q, 4989 sizeof(void *), 4990 GFP_KERNEL); 4991 if (!in_sbal_ptrs) { 4992 rc = -ENOMEM; 4993 goto out_free_qib_param; 4994 } 4995 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4996 in_sbal_ptrs[i] = (struct qdio_buffer *) 4997 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4998 } 4999 5000 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), 5001 GFP_KERNEL); 5002 if (!queue_start_poll) { 5003 rc = -ENOMEM; 5004 goto out_free_in_sbals; 5005 } 5006 for (i = 0; i < card->qdio.no_in_queues; ++i) 5007 queue_start_poll[i] = qeth_qdio_start_poll; 5008 5009 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 5010 5011 out_sbal_ptrs = 5012 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q, 5013 sizeof(void *), 5014 GFP_KERNEL); 5015 if (!out_sbal_ptrs) { 5016 rc = -ENOMEM; 5017 goto out_free_queue_start_poll; 5018 } 5019 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 5020 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 5021 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 5022 card->qdio.out_qs[i]->bufs[j]->buffer); 5023 } 5024 5025 memset(&init_data, 0, sizeof(struct qdio_initialize)); 5026 init_data.cdev = CARD_DDEV(card); 5027 init_data.q_format = qeth_get_qdio_q_format(card); 5028 init_data.qib_param_field_format = 0; 5029 init_data.qib_param_field = qib_param_field; 5030 init_data.no_input_qs = card->qdio.no_in_queues; 5031 init_data.no_output_qs = card->qdio.no_out_queues; 5032 init_data.input_handler = qeth_qdio_input_handler; 5033 init_data.output_handler = qeth_qdio_output_handler; 5034 init_data.queue_start_poll_array = queue_start_poll; 5035 init_data.int_parm = (unsigned long) card; 5036 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 5037 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 5038 init_data.output_sbal_state_array = card->qdio.out_bufstates; 5039 init_data.scan_threshold = 5040 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 5041 5042 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 5043 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 5044 rc = qdio_allocate(&init_data); 5045 if (rc) { 5046 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5047 goto out; 5048 } 5049 rc = qdio_establish(&init_data); 5050 if (rc) { 5051 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5052 qdio_free(CARD_DDEV(card)); 5053 } 5054 } 5055 5056 switch (card->options.cq) { 5057 case QETH_CQ_ENABLED: 5058 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5059 break; 5060 case QETH_CQ_DISABLED: 5061 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5062 break; 5063 default: 5064 break; 5065 } 5066 out: 5067 kfree(out_sbal_ptrs); 5068 out_free_queue_start_poll: 5069 kfree(queue_start_poll); 5070 out_free_in_sbals: 5071 kfree(in_sbal_ptrs); 5072 out_free_qib_param: 5073 kfree(qib_param_field); 5074 out_free_nothing: 5075 return rc; 5076 } 5077 5078 static void qeth_core_free_card(struct qeth_card *card) 5079 { 5080 5081 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5082 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5083 qeth_clean_channel(&card->read); 5084 qeth_clean_channel(&card->write); 5085 qeth_free_qdio_buffers(card); 5086 unregister_service_level(&card->qeth_service_level); 5087 kfree(card); 5088 } 5089 5090 void qeth_trace_features(struct qeth_card *card) 5091 { 5092 QETH_CARD_TEXT(card, 2, "features"); 5093 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5094 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5095 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5096 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5097 sizeof(card->info.diagass_support)); 5098 } 5099 EXPORT_SYMBOL_GPL(qeth_trace_features); 5100 5101 static struct ccw_device_id qeth_ids[] = { 5102 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5103 .driver_info = QETH_CARD_TYPE_OSD}, 5104 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5105 .driver_info = QETH_CARD_TYPE_IQD}, 5106 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5107 .driver_info = QETH_CARD_TYPE_OSN}, 5108 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5109 .driver_info = QETH_CARD_TYPE_OSM}, 5110 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5111 .driver_info = QETH_CARD_TYPE_OSX}, 5112 {}, 5113 }; 5114 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5115 5116 static struct ccw_driver qeth_ccw_driver = { 5117 .driver = { 5118 .owner = THIS_MODULE, 5119 .name = "qeth", 5120 }, 5121 .ids = qeth_ids, 5122 .probe = ccwgroup_probe_ccwdev, 5123 .remove = ccwgroup_remove_ccwdev, 5124 }; 5125 5126 int qeth_core_hardsetup_card(struct qeth_card *card) 5127 { 5128 int retries = 3; 5129 int rc; 5130 5131 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5132 atomic_set(&card->force_alloc_skb, 0); 5133 qeth_update_from_chp_desc(card); 5134 retry: 5135 if (retries < 3) 5136 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5137 dev_name(&card->gdev->dev)); 5138 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5139 ccw_device_set_offline(CARD_DDEV(card)); 5140 ccw_device_set_offline(CARD_WDEV(card)); 5141 ccw_device_set_offline(CARD_RDEV(card)); 5142 qdio_free(CARD_DDEV(card)); 5143 rc = ccw_device_set_online(CARD_RDEV(card)); 5144 if (rc) 5145 goto retriable; 5146 rc = ccw_device_set_online(CARD_WDEV(card)); 5147 if (rc) 5148 goto retriable; 5149 rc = ccw_device_set_online(CARD_DDEV(card)); 5150 if (rc) 5151 goto retriable; 5152 retriable: 5153 if (rc == -ERESTARTSYS) { 5154 QETH_DBF_TEXT(SETUP, 2, "break1"); 5155 return rc; 5156 } else if (rc) { 5157 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5158 if (--retries < 0) 5159 goto out; 5160 else 5161 goto retry; 5162 } 5163 qeth_determine_capabilities(card); 5164 qeth_init_tokens(card); 5165 qeth_init_func_level(card); 5166 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5167 if (rc == -ERESTARTSYS) { 5168 QETH_DBF_TEXT(SETUP, 2, "break2"); 5169 return rc; 5170 } else if (rc) { 5171 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5172 if (--retries < 0) 5173 goto out; 5174 else 5175 goto retry; 5176 } 5177 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5178 if (rc == -ERESTARTSYS) { 5179 QETH_DBF_TEXT(SETUP, 2, "break3"); 5180 return rc; 5181 } else if (rc) { 5182 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5183 if (--retries < 0) 5184 goto out; 5185 else 5186 goto retry; 5187 } 5188 card->read_or_write_problem = 0; 5189 rc = qeth_mpc_initialize(card); 5190 if (rc) { 5191 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5192 goto out; 5193 } 5194 5195 rc = qeth_send_startlan(card); 5196 if (rc) { 5197 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5198 if (rc == IPA_RC_LAN_OFFLINE) { 5199 dev_warn(&card->gdev->dev, 5200 "The LAN is offline\n"); 5201 card->lan_online = 0; 5202 } else { 5203 rc = -ENODEV; 5204 goto out; 5205 } 5206 } else 5207 card->lan_online = 1; 5208 5209 card->options.ipa4.supported_funcs = 0; 5210 card->options.ipa6.supported_funcs = 0; 5211 card->options.adp.supported_funcs = 0; 5212 card->options.sbp.supported_funcs = 0; 5213 card->info.diagass_support = 0; 5214 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5215 if (rc == -ENOMEM) 5216 goto out; 5217 if (qeth_is_supported(card, IPA_IPV6)) { 5218 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 5219 if (rc == -ENOMEM) 5220 goto out; 5221 } 5222 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5223 rc = qeth_query_setadapterparms(card); 5224 if (rc < 0) { 5225 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5226 goto out; 5227 } 5228 } 5229 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5230 rc = qeth_query_setdiagass(card); 5231 if (rc < 0) { 5232 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5233 goto out; 5234 } 5235 } 5236 return 0; 5237 out: 5238 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5239 "an error on the device\n"); 5240 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5241 dev_name(&card->gdev->dev), rc); 5242 return rc; 5243 } 5244 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5245 5246 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5247 struct sk_buff *skb, int offset, int data_len) 5248 { 5249 struct page *page = virt_to_page(element->addr); 5250 unsigned int next_frag; 5251 5252 /* first fill the linear space */ 5253 if (!skb->len) { 5254 unsigned int linear = min(data_len, skb_tailroom(skb)); 5255 5256 skb_put_data(skb, element->addr + offset, linear); 5257 data_len -= linear; 5258 if (!data_len) 5259 return; 5260 offset += linear; 5261 /* fall through to add page frag for remaining data */ 5262 } 5263 5264 next_frag = skb_shinfo(skb)->nr_frags; 5265 get_page(page); 5266 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5267 } 5268 5269 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5270 { 5271 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5272 } 5273 5274 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5275 struct qeth_qdio_buffer *qethbuffer, 5276 struct qdio_buffer_element **__element, int *__offset, 5277 struct qeth_hdr **hdr) 5278 { 5279 struct qdio_buffer_element *element = *__element; 5280 struct qdio_buffer *buffer = qethbuffer->buffer; 5281 int offset = *__offset; 5282 struct sk_buff *skb; 5283 int skb_len = 0; 5284 void *data_ptr; 5285 int data_len; 5286 int headroom = 0; 5287 int use_rx_sg = 0; 5288 5289 /* qeth_hdr must not cross element boundaries */ 5290 while (element->length < offset + sizeof(struct qeth_hdr)) { 5291 if (qeth_is_last_sbale(element)) 5292 return NULL; 5293 element++; 5294 offset = 0; 5295 } 5296 *hdr = element->addr + offset; 5297 5298 offset += sizeof(struct qeth_hdr); 5299 switch ((*hdr)->hdr.l2.id) { 5300 case QETH_HEADER_TYPE_LAYER2: 5301 skb_len = (*hdr)->hdr.l2.pkt_length; 5302 break; 5303 case QETH_HEADER_TYPE_LAYER3: 5304 skb_len = (*hdr)->hdr.l3.length; 5305 headroom = ETH_HLEN; 5306 break; 5307 case QETH_HEADER_TYPE_OSN: 5308 skb_len = (*hdr)->hdr.osn.pdu_length; 5309 headroom = sizeof(struct qeth_hdr); 5310 break; 5311 default: 5312 break; 5313 } 5314 5315 if (!skb_len) 5316 return NULL; 5317 5318 if (((skb_len >= card->options.rx_sg_cb) && 5319 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5320 (!atomic_read(&card->force_alloc_skb))) || 5321 (card->options.cq == QETH_CQ_ENABLED)) 5322 use_rx_sg = 1; 5323 5324 if (use_rx_sg && qethbuffer->rx_skb) { 5325 /* QETH_CQ_ENABLED only: */ 5326 skb = qethbuffer->rx_skb; 5327 qethbuffer->rx_skb = NULL; 5328 } else { 5329 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5330 5331 skb = napi_alloc_skb(&card->napi, linear + headroom); 5332 } 5333 if (!skb) 5334 goto no_mem; 5335 if (headroom) 5336 skb_reserve(skb, headroom); 5337 5338 data_ptr = element->addr + offset; 5339 while (skb_len) { 5340 data_len = min(skb_len, (int)(element->length - offset)); 5341 if (data_len) { 5342 if (use_rx_sg) 5343 qeth_create_skb_frag(element, skb, offset, 5344 data_len); 5345 else 5346 skb_put_data(skb, data_ptr, data_len); 5347 } 5348 skb_len -= data_len; 5349 if (skb_len) { 5350 if (qeth_is_last_sbale(element)) { 5351 QETH_CARD_TEXT(card, 4, "unexeob"); 5352 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5353 dev_kfree_skb_any(skb); 5354 card->stats.rx_errors++; 5355 return NULL; 5356 } 5357 element++; 5358 offset = 0; 5359 data_ptr = element->addr; 5360 } else { 5361 offset += data_len; 5362 } 5363 } 5364 *__element = element; 5365 *__offset = offset; 5366 if (use_rx_sg && card->options.performance_stats) { 5367 card->perf_stats.sg_skbs_rx++; 5368 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5369 } 5370 return skb; 5371 no_mem: 5372 if (net_ratelimit()) { 5373 QETH_CARD_TEXT(card, 2, "noskbmem"); 5374 } 5375 card->stats.rx_dropped++; 5376 return NULL; 5377 } 5378 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5379 5380 int qeth_poll(struct napi_struct *napi, int budget) 5381 { 5382 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5383 int work_done = 0; 5384 struct qeth_qdio_buffer *buffer; 5385 int done; 5386 int new_budget = budget; 5387 5388 if (card->options.performance_stats) { 5389 card->perf_stats.inbound_cnt++; 5390 card->perf_stats.inbound_start_time = qeth_get_micros(); 5391 } 5392 5393 while (1) { 5394 if (!card->rx.b_count) { 5395 card->rx.qdio_err = 0; 5396 card->rx.b_count = qdio_get_next_buffers( 5397 card->data.ccwdev, 0, &card->rx.b_index, 5398 &card->rx.qdio_err); 5399 if (card->rx.b_count <= 0) { 5400 card->rx.b_count = 0; 5401 break; 5402 } 5403 card->rx.b_element = 5404 &card->qdio.in_q->bufs[card->rx.b_index] 5405 .buffer->element[0]; 5406 card->rx.e_offset = 0; 5407 } 5408 5409 while (card->rx.b_count) { 5410 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5411 if (!(card->rx.qdio_err && 5412 qeth_check_qdio_errors(card, buffer->buffer, 5413 card->rx.qdio_err, "qinerr"))) 5414 work_done += 5415 card->discipline->process_rx_buffer( 5416 card, new_budget, &done); 5417 else 5418 done = 1; 5419 5420 if (done) { 5421 if (card->options.performance_stats) 5422 card->perf_stats.bufs_rec++; 5423 qeth_put_buffer_pool_entry(card, 5424 buffer->pool_entry); 5425 qeth_queue_input_buffer(card, card->rx.b_index); 5426 card->rx.b_count--; 5427 if (card->rx.b_count) { 5428 card->rx.b_index = 5429 (card->rx.b_index + 1) % 5430 QDIO_MAX_BUFFERS_PER_Q; 5431 card->rx.b_element = 5432 &card->qdio.in_q 5433 ->bufs[card->rx.b_index] 5434 .buffer->element[0]; 5435 card->rx.e_offset = 0; 5436 } 5437 } 5438 5439 if (work_done >= budget) 5440 goto out; 5441 else 5442 new_budget = budget - work_done; 5443 } 5444 } 5445 5446 napi_complete_done(napi, work_done); 5447 if (qdio_start_irq(card->data.ccwdev, 0)) 5448 napi_schedule(&card->napi); 5449 out: 5450 if (card->options.performance_stats) 5451 card->perf_stats.inbound_time += qeth_get_micros() - 5452 card->perf_stats.inbound_start_time; 5453 return work_done; 5454 } 5455 EXPORT_SYMBOL_GPL(qeth_poll); 5456 5457 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5458 { 5459 if (!cmd->hdr.return_code) 5460 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5461 return cmd->hdr.return_code; 5462 } 5463 5464 int qeth_setassparms_cb(struct qeth_card *card, 5465 struct qeth_reply *reply, unsigned long data) 5466 { 5467 struct qeth_ipa_cmd *cmd; 5468 5469 QETH_CARD_TEXT(card, 4, "defadpcb"); 5470 5471 cmd = (struct qeth_ipa_cmd *) data; 5472 if (cmd->hdr.return_code == 0) { 5473 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5474 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5475 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5476 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5477 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5478 } 5479 return 0; 5480 } 5481 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5482 5483 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5484 enum qeth_ipa_funcs ipa_func, 5485 __u16 cmd_code, __u16 len, 5486 enum qeth_prot_versions prot) 5487 { 5488 struct qeth_cmd_buffer *iob; 5489 struct qeth_ipa_cmd *cmd; 5490 5491 QETH_CARD_TEXT(card, 4, "getasscm"); 5492 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5493 5494 if (iob) { 5495 cmd = __ipa_cmd(iob); 5496 cmd->data.setassparms.hdr.assist_no = ipa_func; 5497 cmd->data.setassparms.hdr.length = 8 + len; 5498 cmd->data.setassparms.hdr.command_code = cmd_code; 5499 cmd->data.setassparms.hdr.return_code = 0; 5500 cmd->data.setassparms.hdr.seq_no = 0; 5501 } 5502 5503 return iob; 5504 } 5505 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5506 5507 int qeth_send_setassparms(struct qeth_card *card, 5508 struct qeth_cmd_buffer *iob, __u16 len, long data, 5509 int (*reply_cb)(struct qeth_card *, 5510 struct qeth_reply *, unsigned long), 5511 void *reply_param) 5512 { 5513 int rc; 5514 struct qeth_ipa_cmd *cmd; 5515 5516 QETH_CARD_TEXT(card, 4, "sendassp"); 5517 5518 cmd = __ipa_cmd(iob); 5519 if (len <= sizeof(__u32)) 5520 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5521 else /* (len > sizeof(__u32)) */ 5522 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5523 5524 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5525 return rc; 5526 } 5527 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5528 5529 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 5530 enum qeth_ipa_funcs ipa_func, 5531 u16 cmd_code, long data, 5532 enum qeth_prot_versions prot) 5533 { 5534 int rc; 5535 int length = 0; 5536 struct qeth_cmd_buffer *iob; 5537 5538 QETH_CARD_TEXT_(card, 4, "simassp%i", prot); 5539 if (data) 5540 length = sizeof(__u32); 5541 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); 5542 if (!iob) 5543 return -ENOMEM; 5544 rc = qeth_send_setassparms(card, iob, length, data, 5545 qeth_setassparms_cb, NULL); 5546 return rc; 5547 } 5548 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 5549 5550 static void qeth_unregister_dbf_views(void) 5551 { 5552 int x; 5553 for (x = 0; x < QETH_DBF_INFOS; x++) { 5554 debug_unregister(qeth_dbf[x].id); 5555 qeth_dbf[x].id = NULL; 5556 } 5557 } 5558 5559 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5560 { 5561 char dbf_txt_buf[32]; 5562 va_list args; 5563 5564 if (!debug_level_enabled(id, level)) 5565 return; 5566 va_start(args, fmt); 5567 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5568 va_end(args); 5569 debug_text_event(id, level, dbf_txt_buf); 5570 } 5571 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5572 5573 static int qeth_register_dbf_views(void) 5574 { 5575 int ret; 5576 int x; 5577 5578 for (x = 0; x < QETH_DBF_INFOS; x++) { 5579 /* register the areas */ 5580 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5581 qeth_dbf[x].pages, 5582 qeth_dbf[x].areas, 5583 qeth_dbf[x].len); 5584 if (qeth_dbf[x].id == NULL) { 5585 qeth_unregister_dbf_views(); 5586 return -ENOMEM; 5587 } 5588 5589 /* register a view */ 5590 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5591 if (ret) { 5592 qeth_unregister_dbf_views(); 5593 return ret; 5594 } 5595 5596 /* set a passing level */ 5597 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5598 } 5599 5600 return 0; 5601 } 5602 5603 int qeth_core_load_discipline(struct qeth_card *card, 5604 enum qeth_discipline_id discipline) 5605 { 5606 int rc = 0; 5607 5608 mutex_lock(&qeth_mod_mutex); 5609 switch (discipline) { 5610 case QETH_DISCIPLINE_LAYER3: 5611 card->discipline = try_then_request_module( 5612 symbol_get(qeth_l3_discipline), "qeth_l3"); 5613 break; 5614 case QETH_DISCIPLINE_LAYER2: 5615 card->discipline = try_then_request_module( 5616 symbol_get(qeth_l2_discipline), "qeth_l2"); 5617 break; 5618 default: 5619 break; 5620 } 5621 5622 if (!card->discipline) { 5623 dev_err(&card->gdev->dev, "There is no kernel module to " 5624 "support discipline %d\n", discipline); 5625 rc = -EINVAL; 5626 } 5627 mutex_unlock(&qeth_mod_mutex); 5628 return rc; 5629 } 5630 5631 void qeth_core_free_discipline(struct qeth_card *card) 5632 { 5633 if (card->options.layer2) 5634 symbol_put(qeth_l2_discipline); 5635 else 5636 symbol_put(qeth_l3_discipline); 5637 card->discipline = NULL; 5638 } 5639 5640 const struct device_type qeth_generic_devtype = { 5641 .name = "qeth_generic", 5642 .groups = qeth_generic_attr_groups, 5643 }; 5644 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5645 5646 static const struct device_type qeth_osn_devtype = { 5647 .name = "qeth_osn", 5648 .groups = qeth_osn_attr_groups, 5649 }; 5650 5651 #define DBF_NAME_LEN 20 5652 5653 struct qeth_dbf_entry { 5654 char dbf_name[DBF_NAME_LEN]; 5655 debug_info_t *dbf_info; 5656 struct list_head dbf_list; 5657 }; 5658 5659 static LIST_HEAD(qeth_dbf_list); 5660 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5661 5662 static debug_info_t *qeth_get_dbf_entry(char *name) 5663 { 5664 struct qeth_dbf_entry *entry; 5665 debug_info_t *rc = NULL; 5666 5667 mutex_lock(&qeth_dbf_list_mutex); 5668 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5669 if (strcmp(entry->dbf_name, name) == 0) { 5670 rc = entry->dbf_info; 5671 break; 5672 } 5673 } 5674 mutex_unlock(&qeth_dbf_list_mutex); 5675 return rc; 5676 } 5677 5678 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5679 { 5680 struct qeth_dbf_entry *new_entry; 5681 5682 card->debug = debug_register(name, 2, 1, 8); 5683 if (!card->debug) { 5684 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5685 goto err; 5686 } 5687 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5688 goto err_dbg; 5689 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5690 if (!new_entry) 5691 goto err_dbg; 5692 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5693 new_entry->dbf_info = card->debug; 5694 mutex_lock(&qeth_dbf_list_mutex); 5695 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5696 mutex_unlock(&qeth_dbf_list_mutex); 5697 5698 return 0; 5699 5700 err_dbg: 5701 debug_unregister(card->debug); 5702 err: 5703 return -ENOMEM; 5704 } 5705 5706 static void qeth_clear_dbf_list(void) 5707 { 5708 struct qeth_dbf_entry *entry, *tmp; 5709 5710 mutex_lock(&qeth_dbf_list_mutex); 5711 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5712 list_del(&entry->dbf_list); 5713 debug_unregister(entry->dbf_info); 5714 kfree(entry); 5715 } 5716 mutex_unlock(&qeth_dbf_list_mutex); 5717 } 5718 5719 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5720 { 5721 struct qeth_card *card; 5722 struct device *dev; 5723 int rc; 5724 enum qeth_discipline_id enforced_disc; 5725 unsigned long flags; 5726 char dbf_name[DBF_NAME_LEN]; 5727 5728 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5729 5730 dev = &gdev->dev; 5731 if (!get_device(dev)) 5732 return -ENODEV; 5733 5734 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5735 5736 card = qeth_alloc_card(); 5737 if (!card) { 5738 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5739 rc = -ENOMEM; 5740 goto err_dev; 5741 } 5742 5743 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5744 dev_name(&gdev->dev)); 5745 card->debug = qeth_get_dbf_entry(dbf_name); 5746 if (!card->debug) { 5747 rc = qeth_add_dbf_entry(card, dbf_name); 5748 if (rc) 5749 goto err_card; 5750 } 5751 5752 card->read.ccwdev = gdev->cdev[0]; 5753 card->write.ccwdev = gdev->cdev[1]; 5754 card->data.ccwdev = gdev->cdev[2]; 5755 dev_set_drvdata(&gdev->dev, card); 5756 card->gdev = gdev; 5757 gdev->cdev[0]->handler = qeth_irq; 5758 gdev->cdev[1]->handler = qeth_irq; 5759 gdev->cdev[2]->handler = qeth_irq; 5760 5761 qeth_determine_card_type(card); 5762 rc = qeth_setup_card(card); 5763 if (rc) { 5764 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5765 goto err_card; 5766 } 5767 5768 qeth_determine_capabilities(card); 5769 enforced_disc = qeth_enforce_discipline(card); 5770 switch (enforced_disc) { 5771 case QETH_DISCIPLINE_UNDETERMINED: 5772 gdev->dev.type = &qeth_generic_devtype; 5773 break; 5774 default: 5775 card->info.layer_enforced = true; 5776 rc = qeth_core_load_discipline(card, enforced_disc); 5777 if (rc) 5778 goto err_card; 5779 5780 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5781 ? card->discipline->devtype 5782 : &qeth_osn_devtype; 5783 rc = card->discipline->setup(card->gdev); 5784 if (rc) 5785 goto err_disc; 5786 break; 5787 } 5788 5789 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5790 list_add_tail(&card->list, &qeth_core_card_list.list); 5791 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5792 return 0; 5793 5794 err_disc: 5795 qeth_core_free_discipline(card); 5796 err_card: 5797 qeth_core_free_card(card); 5798 err_dev: 5799 put_device(dev); 5800 return rc; 5801 } 5802 5803 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5804 { 5805 unsigned long flags; 5806 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5807 5808 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5809 5810 if (card->discipline) { 5811 card->discipline->remove(gdev); 5812 qeth_core_free_discipline(card); 5813 } 5814 5815 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5816 list_del(&card->list); 5817 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5818 qeth_core_free_card(card); 5819 dev_set_drvdata(&gdev->dev, NULL); 5820 put_device(&gdev->dev); 5821 return; 5822 } 5823 5824 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5825 { 5826 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5827 int rc = 0; 5828 enum qeth_discipline_id def_discipline; 5829 5830 if (!card->discipline) { 5831 if (card->info.type == QETH_CARD_TYPE_IQD) 5832 def_discipline = QETH_DISCIPLINE_LAYER3; 5833 else 5834 def_discipline = QETH_DISCIPLINE_LAYER2; 5835 rc = qeth_core_load_discipline(card, def_discipline); 5836 if (rc) 5837 goto err; 5838 rc = card->discipline->setup(card->gdev); 5839 if (rc) { 5840 qeth_core_free_discipline(card); 5841 goto err; 5842 } 5843 } 5844 rc = card->discipline->set_online(gdev); 5845 err: 5846 return rc; 5847 } 5848 5849 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5850 { 5851 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5852 return card->discipline->set_offline(gdev); 5853 } 5854 5855 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5856 { 5857 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5858 qeth_set_allowed_threads(card, 0, 1); 5859 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5860 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5861 qeth_qdio_clear_card(card, 0); 5862 qeth_clear_qdio_buffers(card); 5863 qdio_free(CARD_DDEV(card)); 5864 } 5865 5866 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5867 { 5868 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5869 if (card->discipline && card->discipline->freeze) 5870 return card->discipline->freeze(gdev); 5871 return 0; 5872 } 5873 5874 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5875 { 5876 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5877 if (card->discipline && card->discipline->thaw) 5878 return card->discipline->thaw(gdev); 5879 return 0; 5880 } 5881 5882 static int qeth_core_restore(struct ccwgroup_device *gdev) 5883 { 5884 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5885 if (card->discipline && card->discipline->restore) 5886 return card->discipline->restore(gdev); 5887 return 0; 5888 } 5889 5890 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5891 .driver = { 5892 .owner = THIS_MODULE, 5893 .name = "qeth", 5894 }, 5895 .ccw_driver = &qeth_ccw_driver, 5896 .setup = qeth_core_probe_device, 5897 .remove = qeth_core_remove_device, 5898 .set_online = qeth_core_set_online, 5899 .set_offline = qeth_core_set_offline, 5900 .shutdown = qeth_core_shutdown, 5901 .prepare = NULL, 5902 .complete = NULL, 5903 .freeze = qeth_core_freeze, 5904 .thaw = qeth_core_thaw, 5905 .restore = qeth_core_restore, 5906 }; 5907 5908 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5909 size_t count) 5910 { 5911 int err; 5912 5913 err = ccwgroup_create_dev(qeth_core_root_dev, 5914 &qeth_core_ccwgroup_driver, 3, buf); 5915 5916 return err ? err : count; 5917 } 5918 static DRIVER_ATTR_WO(group); 5919 5920 static struct attribute *qeth_drv_attrs[] = { 5921 &driver_attr_group.attr, 5922 NULL, 5923 }; 5924 static struct attribute_group qeth_drv_attr_group = { 5925 .attrs = qeth_drv_attrs, 5926 }; 5927 static const struct attribute_group *qeth_drv_attr_groups[] = { 5928 &qeth_drv_attr_group, 5929 NULL, 5930 }; 5931 5932 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5933 { 5934 struct qeth_card *card = dev->ml_priv; 5935 struct mii_ioctl_data *mii_data; 5936 int rc = 0; 5937 5938 if (!card) 5939 return -ENODEV; 5940 5941 if (!qeth_card_hw_is_reachable(card)) 5942 return -ENODEV; 5943 5944 if (card->info.type == QETH_CARD_TYPE_OSN) 5945 return -EPERM; 5946 5947 switch (cmd) { 5948 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5949 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5950 break; 5951 case SIOC_QETH_GET_CARD_TYPE: 5952 if ((card->info.type == QETH_CARD_TYPE_OSD || 5953 card->info.type == QETH_CARD_TYPE_OSM || 5954 card->info.type == QETH_CARD_TYPE_OSX) && 5955 !card->info.guestlan) 5956 return 1; 5957 else 5958 return 0; 5959 case SIOCGMIIPHY: 5960 mii_data = if_mii(rq); 5961 mii_data->phy_id = 0; 5962 break; 5963 case SIOCGMIIREG: 5964 mii_data = if_mii(rq); 5965 if (mii_data->phy_id != 0) 5966 rc = -EINVAL; 5967 else 5968 mii_data->val_out = qeth_mdio_read(dev, 5969 mii_data->phy_id, mii_data->reg_num); 5970 break; 5971 case SIOC_QETH_QUERY_OAT: 5972 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5973 break; 5974 default: 5975 if (card->discipline->do_ioctl) 5976 rc = card->discipline->do_ioctl(dev, rq, cmd); 5977 else 5978 rc = -EOPNOTSUPP; 5979 } 5980 if (rc) 5981 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5982 return rc; 5983 } 5984 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5985 5986 static struct { 5987 const char str[ETH_GSTRING_LEN]; 5988 } qeth_ethtool_stats_keys[] = { 5989 /* 0 */{"rx skbs"}, 5990 {"rx buffers"}, 5991 {"tx skbs"}, 5992 {"tx buffers"}, 5993 {"tx skbs no packing"}, 5994 {"tx buffers no packing"}, 5995 {"tx skbs packing"}, 5996 {"tx buffers packing"}, 5997 {"tx sg skbs"}, 5998 {"tx sg frags"}, 5999 /* 10 */{"rx sg skbs"}, 6000 {"rx sg frags"}, 6001 {"rx sg page allocs"}, 6002 {"tx large kbytes"}, 6003 {"tx large count"}, 6004 {"tx pk state ch n->p"}, 6005 {"tx pk state ch p->n"}, 6006 {"tx pk watermark low"}, 6007 {"tx pk watermark high"}, 6008 {"queue 0 buffer usage"}, 6009 /* 20 */{"queue 1 buffer usage"}, 6010 {"queue 2 buffer usage"}, 6011 {"queue 3 buffer usage"}, 6012 {"rx poll time"}, 6013 {"rx poll count"}, 6014 {"rx do_QDIO time"}, 6015 {"rx do_QDIO count"}, 6016 {"tx handler time"}, 6017 {"tx handler count"}, 6018 {"tx time"}, 6019 /* 30 */{"tx count"}, 6020 {"tx do_QDIO time"}, 6021 {"tx do_QDIO count"}, 6022 {"tx csum"}, 6023 {"tx lin"}, 6024 {"tx linfail"}, 6025 {"cq handler count"}, 6026 {"cq handler time"}, 6027 {"rx csum"} 6028 }; 6029 6030 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 6031 { 6032 switch (stringset) { 6033 case ETH_SS_STATS: 6034 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 6035 default: 6036 return -EINVAL; 6037 } 6038 } 6039 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 6040 6041 void qeth_core_get_ethtool_stats(struct net_device *dev, 6042 struct ethtool_stats *stats, u64 *data) 6043 { 6044 struct qeth_card *card = dev->ml_priv; 6045 data[0] = card->stats.rx_packets - 6046 card->perf_stats.initial_rx_packets; 6047 data[1] = card->perf_stats.bufs_rec; 6048 data[2] = card->stats.tx_packets - 6049 card->perf_stats.initial_tx_packets; 6050 data[3] = card->perf_stats.bufs_sent; 6051 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 6052 - card->perf_stats.skbs_sent_pack; 6053 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 6054 data[6] = card->perf_stats.skbs_sent_pack; 6055 data[7] = card->perf_stats.bufs_sent_pack; 6056 data[8] = card->perf_stats.sg_skbs_sent; 6057 data[9] = card->perf_stats.sg_frags_sent; 6058 data[10] = card->perf_stats.sg_skbs_rx; 6059 data[11] = card->perf_stats.sg_frags_rx; 6060 data[12] = card->perf_stats.sg_alloc_page_rx; 6061 data[13] = (card->perf_stats.large_send_bytes >> 10); 6062 data[14] = card->perf_stats.large_send_cnt; 6063 data[15] = card->perf_stats.sc_dp_p; 6064 data[16] = card->perf_stats.sc_p_dp; 6065 data[17] = QETH_LOW_WATERMARK_PACK; 6066 data[18] = QETH_HIGH_WATERMARK_PACK; 6067 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 6068 data[20] = (card->qdio.no_out_queues > 1) ? 6069 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 6070 data[21] = (card->qdio.no_out_queues > 2) ? 6071 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6072 data[22] = (card->qdio.no_out_queues > 3) ? 6073 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6074 data[23] = card->perf_stats.inbound_time; 6075 data[24] = card->perf_stats.inbound_cnt; 6076 data[25] = card->perf_stats.inbound_do_qdio_time; 6077 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6078 data[27] = card->perf_stats.outbound_handler_time; 6079 data[28] = card->perf_stats.outbound_handler_cnt; 6080 data[29] = card->perf_stats.outbound_time; 6081 data[30] = card->perf_stats.outbound_cnt; 6082 data[31] = card->perf_stats.outbound_do_qdio_time; 6083 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6084 data[33] = card->perf_stats.tx_csum; 6085 data[34] = card->perf_stats.tx_lin; 6086 data[35] = card->perf_stats.tx_linfail; 6087 data[36] = card->perf_stats.cq_cnt; 6088 data[37] = card->perf_stats.cq_time; 6089 data[38] = card->perf_stats.rx_csum; 6090 } 6091 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6092 6093 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6094 { 6095 switch (stringset) { 6096 case ETH_SS_STATS: 6097 memcpy(data, &qeth_ethtool_stats_keys, 6098 sizeof(qeth_ethtool_stats_keys)); 6099 break; 6100 default: 6101 WARN_ON(1); 6102 break; 6103 } 6104 } 6105 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6106 6107 void qeth_core_get_drvinfo(struct net_device *dev, 6108 struct ethtool_drvinfo *info) 6109 { 6110 struct qeth_card *card = dev->ml_priv; 6111 6112 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6113 sizeof(info->driver)); 6114 strlcpy(info->version, "1.0", sizeof(info->version)); 6115 strlcpy(info->fw_version, card->info.mcl_level, 6116 sizeof(info->fw_version)); 6117 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6118 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6119 } 6120 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6121 6122 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6123 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6124 /* Always advertise and support all speeds up to specified, and only one */ 6125 /* specified port type. */ 6126 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6127 int maxspeed, int porttype) 6128 { 6129 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6130 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6131 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6132 6133 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6134 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6135 6136 switch (porttype) { 6137 case PORT_TP: 6138 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6139 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6140 break; 6141 case PORT_FIBRE: 6142 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6143 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6144 break; 6145 default: 6146 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6147 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6148 WARN_ON_ONCE(1); 6149 } 6150 6151 /* fallthrough from high to low, to select all legal speeds: */ 6152 switch (maxspeed) { 6153 case SPEED_10000: 6154 ethtool_link_ksettings_add_link_mode(cmd, supported, 6155 10000baseT_Full); 6156 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6157 10000baseT_Full); 6158 case SPEED_1000: 6159 ethtool_link_ksettings_add_link_mode(cmd, supported, 6160 1000baseT_Full); 6161 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6162 1000baseT_Full); 6163 ethtool_link_ksettings_add_link_mode(cmd, supported, 6164 1000baseT_Half); 6165 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6166 1000baseT_Half); 6167 case SPEED_100: 6168 ethtool_link_ksettings_add_link_mode(cmd, supported, 6169 100baseT_Full); 6170 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6171 100baseT_Full); 6172 ethtool_link_ksettings_add_link_mode(cmd, supported, 6173 100baseT_Half); 6174 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6175 100baseT_Half); 6176 case SPEED_10: 6177 ethtool_link_ksettings_add_link_mode(cmd, supported, 6178 10baseT_Full); 6179 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6180 10baseT_Full); 6181 ethtool_link_ksettings_add_link_mode(cmd, supported, 6182 10baseT_Half); 6183 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6184 10baseT_Half); 6185 /* end fallthrough */ 6186 break; 6187 default: 6188 ethtool_link_ksettings_add_link_mode(cmd, supported, 6189 10baseT_Full); 6190 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6191 10baseT_Full); 6192 ethtool_link_ksettings_add_link_mode(cmd, supported, 6193 10baseT_Half); 6194 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6195 10baseT_Half); 6196 WARN_ON_ONCE(1); 6197 } 6198 } 6199 6200 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6201 struct ethtool_link_ksettings *cmd) 6202 { 6203 struct qeth_card *card = netdev->ml_priv; 6204 enum qeth_link_types link_type; 6205 struct carrier_info carrier_info; 6206 int rc; 6207 6208 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6209 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6210 else 6211 link_type = card->info.link_type; 6212 6213 cmd->base.duplex = DUPLEX_FULL; 6214 cmd->base.autoneg = AUTONEG_ENABLE; 6215 cmd->base.phy_address = 0; 6216 cmd->base.mdio_support = 0; 6217 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6218 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6219 6220 switch (link_type) { 6221 case QETH_LINK_TYPE_FAST_ETH: 6222 case QETH_LINK_TYPE_LANE_ETH100: 6223 cmd->base.speed = SPEED_100; 6224 cmd->base.port = PORT_TP; 6225 break; 6226 case QETH_LINK_TYPE_GBIT_ETH: 6227 case QETH_LINK_TYPE_LANE_ETH1000: 6228 cmd->base.speed = SPEED_1000; 6229 cmd->base.port = PORT_FIBRE; 6230 break; 6231 case QETH_LINK_TYPE_10GBIT_ETH: 6232 cmd->base.speed = SPEED_10000; 6233 cmd->base.port = PORT_FIBRE; 6234 break; 6235 default: 6236 cmd->base.speed = SPEED_10; 6237 cmd->base.port = PORT_TP; 6238 } 6239 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6240 6241 /* Check if we can obtain more accurate information. */ 6242 /* If QUERY_CARD_INFO command is not supported or fails, */ 6243 /* just return the heuristics that was filled above. */ 6244 if (!qeth_card_hw_is_reachable(card)) 6245 return -ENODEV; 6246 rc = qeth_query_card_info(card, &carrier_info); 6247 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6248 return 0; 6249 if (rc) /* report error from the hardware operation */ 6250 return rc; 6251 /* on success, fill in the information got from the hardware */ 6252 6253 netdev_dbg(netdev, 6254 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6255 carrier_info.card_type, 6256 carrier_info.port_mode, 6257 carrier_info.port_speed); 6258 6259 /* Update attributes for which we've obtained more authoritative */ 6260 /* information, leave the rest the way they where filled above. */ 6261 switch (carrier_info.card_type) { 6262 case CARD_INFO_TYPE_1G_COPPER_A: 6263 case CARD_INFO_TYPE_1G_COPPER_B: 6264 cmd->base.port = PORT_TP; 6265 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6266 break; 6267 case CARD_INFO_TYPE_1G_FIBRE_A: 6268 case CARD_INFO_TYPE_1G_FIBRE_B: 6269 cmd->base.port = PORT_FIBRE; 6270 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6271 break; 6272 case CARD_INFO_TYPE_10G_FIBRE_A: 6273 case CARD_INFO_TYPE_10G_FIBRE_B: 6274 cmd->base.port = PORT_FIBRE; 6275 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6276 break; 6277 } 6278 6279 switch (carrier_info.port_mode) { 6280 case CARD_INFO_PORTM_FULLDUPLEX: 6281 cmd->base.duplex = DUPLEX_FULL; 6282 break; 6283 case CARD_INFO_PORTM_HALFDUPLEX: 6284 cmd->base.duplex = DUPLEX_HALF; 6285 break; 6286 } 6287 6288 switch (carrier_info.port_speed) { 6289 case CARD_INFO_PORTS_10M: 6290 cmd->base.speed = SPEED_10; 6291 break; 6292 case CARD_INFO_PORTS_100M: 6293 cmd->base.speed = SPEED_100; 6294 break; 6295 case CARD_INFO_PORTS_1G: 6296 cmd->base.speed = SPEED_1000; 6297 break; 6298 case CARD_INFO_PORTS_10G: 6299 cmd->base.speed = SPEED_10000; 6300 break; 6301 } 6302 6303 return 0; 6304 } 6305 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6306 6307 /* Callback to handle checksum offload command reply from OSA card. 6308 * Verify that required features have been enabled on the card. 6309 * Return error in hdr->return_code as this value is checked by caller. 6310 * 6311 * Always returns zero to indicate no further messages from the OSA card. 6312 */ 6313 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6314 struct qeth_reply *reply, 6315 unsigned long data) 6316 { 6317 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6318 struct qeth_checksum_cmd *chksum_cb = 6319 (struct qeth_checksum_cmd *)reply->param; 6320 6321 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6322 if (qeth_setassparms_inspect_rc(cmd)) 6323 return 0; 6324 6325 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6326 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6327 chksum_cb->supported = 6328 cmd->data.setassparms.data.chksum.supported; 6329 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6330 } 6331 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6332 chksum_cb->supported = 6333 cmd->data.setassparms.data.chksum.supported; 6334 chksum_cb->enabled = 6335 cmd->data.setassparms.data.chksum.enabled; 6336 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6337 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6338 } 6339 return 0; 6340 } 6341 6342 /* Send command to OSA card and check results. */ 6343 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6344 enum qeth_ipa_funcs ipa_func, 6345 __u16 cmd_code, long data, 6346 struct qeth_checksum_cmd *chksum_cb, 6347 enum qeth_prot_versions prot) 6348 { 6349 struct qeth_cmd_buffer *iob; 6350 int rc = -ENOMEM; 6351 6352 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6353 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6354 sizeof(__u32), prot); 6355 if (iob) 6356 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6357 qeth_ipa_checksum_run_cmd_cb, 6358 chksum_cb); 6359 return rc; 6360 } 6361 6362 static int qeth_send_checksum_on(struct qeth_card *card, int cstype, 6363 enum qeth_prot_versions prot) 6364 { 6365 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; 6366 struct qeth_checksum_cmd chksum_cb; 6367 int rc; 6368 6369 if (prot == QETH_PROT_IPV4) 6370 required_features |= QETH_IPA_CHECKSUM_IP_HDR; 6371 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6372 &chksum_cb, prot); 6373 if (!rc) { 6374 if ((required_features & chksum_cb.supported) != 6375 required_features) 6376 rc = -EIO; 6377 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6378 cstype == IPA_INBOUND_CHECKSUM) 6379 dev_warn(&card->gdev->dev, 6380 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6381 QETH_CARD_IFNAME(card)); 6382 } 6383 if (rc) { 6384 qeth_send_simple_setassparms_prot(card, cstype, 6385 IPA_CMD_ASS_STOP, 0, prot); 6386 dev_warn(&card->gdev->dev, 6387 "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n", 6388 prot, QETH_CARD_IFNAME(card)); 6389 return rc; 6390 } 6391 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6392 chksum_cb.supported, &chksum_cb, 6393 prot); 6394 if (!rc) { 6395 if ((required_features & chksum_cb.enabled) != 6396 required_features) 6397 rc = -EIO; 6398 } 6399 if (rc) { 6400 qeth_send_simple_setassparms_prot(card, cstype, 6401 IPA_CMD_ASS_STOP, 0, prot); 6402 dev_warn(&card->gdev->dev, 6403 "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n", 6404 prot, QETH_CARD_IFNAME(card)); 6405 return rc; 6406 } 6407 6408 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", 6409 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); 6410 return 0; 6411 } 6412 6413 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, 6414 enum qeth_prot_versions prot) 6415 { 6416 int rc = (on) ? qeth_send_checksum_on(card, cstype, prot) 6417 : qeth_send_simple_setassparms_prot(card, cstype, 6418 IPA_CMD_ASS_STOP, 0, 6419 prot); 6420 return rc ? -EIO : 0; 6421 } 6422 6423 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6424 { 6425 int rc; 6426 6427 QETH_CARD_TEXT(card, 3, "sttso"); 6428 6429 if (on) { 6430 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6431 IPA_CMD_ASS_START, 0); 6432 if (rc) { 6433 dev_warn(&card->gdev->dev, 6434 "Starting outbound TCP segmentation offload for %s failed\n", 6435 QETH_CARD_IFNAME(card)); 6436 return -EIO; 6437 } 6438 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6439 } else { 6440 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6441 IPA_CMD_ASS_STOP, 0); 6442 } 6443 return rc; 6444 } 6445 6446 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) 6447 { 6448 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; 6449 int rc_ipv6; 6450 6451 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6452 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6453 QETH_PROT_IPV4); 6454 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6455 /* no/one Offload Assist available, so the rc is trivial */ 6456 return rc_ipv4; 6457 6458 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6459 QETH_PROT_IPV6); 6460 6461 if (on) 6462 /* enable: success if any Assist is active */ 6463 return (rc_ipv6) ? rc_ipv4 : 0; 6464 6465 /* disable: failure if any Assist is still active */ 6466 return (rc_ipv6) ? rc_ipv6 : rc_ipv4; 6467 } 6468 6469 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \ 6470 NETIF_F_IPV6_CSUM) 6471 /** 6472 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features 6473 * @dev: a net_device 6474 */ 6475 void qeth_enable_hw_features(struct net_device *dev) 6476 { 6477 struct qeth_card *card = dev->ml_priv; 6478 netdev_features_t features; 6479 6480 rtnl_lock(); 6481 features = dev->features; 6482 /* force-off any feature that needs an IPA sequence. 6483 * netdev_update_features() will restart them. 6484 */ 6485 dev->features &= ~QETH_HW_FEATURES; 6486 netdev_update_features(dev); 6487 if (features != dev->features) 6488 dev_warn(&card->gdev->dev, 6489 "Device recovery failed to restore all offload features\n"); 6490 rtnl_unlock(); 6491 } 6492 EXPORT_SYMBOL_GPL(qeth_enable_hw_features); 6493 6494 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6495 { 6496 struct qeth_card *card = dev->ml_priv; 6497 netdev_features_t changed = dev->features ^ features; 6498 int rc = 0; 6499 6500 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6501 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6502 6503 if ((changed & NETIF_F_IP_CSUM)) { 6504 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, 6505 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); 6506 if (rc) 6507 changed ^= NETIF_F_IP_CSUM; 6508 } 6509 if (changed & NETIF_F_IPV6_CSUM) { 6510 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, 6511 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); 6512 if (rc) 6513 changed ^= NETIF_F_IPV6_CSUM; 6514 } 6515 if (changed & NETIF_F_RXCSUM) { 6516 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); 6517 if (rc) 6518 changed ^= NETIF_F_RXCSUM; 6519 } 6520 if ((changed & NETIF_F_TSO)) { 6521 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6522 if (rc) 6523 changed ^= NETIF_F_TSO; 6524 } 6525 6526 /* everything changed successfully? */ 6527 if ((dev->features ^ features) == changed) 6528 return 0; 6529 /* something went wrong. save changed features and return error */ 6530 dev->features ^= changed; 6531 return -EIO; 6532 } 6533 EXPORT_SYMBOL_GPL(qeth_set_features); 6534 6535 netdev_features_t qeth_fix_features(struct net_device *dev, 6536 netdev_features_t features) 6537 { 6538 struct qeth_card *card = dev->ml_priv; 6539 6540 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6541 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6542 features &= ~NETIF_F_IP_CSUM; 6543 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) 6544 features &= ~NETIF_F_IPV6_CSUM; 6545 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && 6546 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6547 features &= ~NETIF_F_RXCSUM; 6548 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6549 features &= ~NETIF_F_TSO; 6550 /* if the card isn't up, remove features that require hw changes */ 6551 if (card->state == CARD_STATE_DOWN || 6552 card->state == CARD_STATE_RECOVER) 6553 features &= ~QETH_HW_FEATURES; 6554 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6555 return features; 6556 } 6557 EXPORT_SYMBOL_GPL(qeth_fix_features); 6558 6559 netdev_features_t qeth_features_check(struct sk_buff *skb, 6560 struct net_device *dev, 6561 netdev_features_t features) 6562 { 6563 /* GSO segmentation builds skbs with 6564 * a (small) linear part for the headers, and 6565 * page frags for the data. 6566 * Compared to a linear skb, the header-only part consumes an 6567 * additional buffer element. This reduces buffer utilization, and 6568 * hurts throughput. So compress small segments into one element. 6569 */ 6570 if (netif_needs_gso(skb, features)) { 6571 /* match skb_segment(): */ 6572 unsigned int doffset = skb->data - skb_mac_header(skb); 6573 unsigned int hsize = skb_shinfo(skb)->gso_size; 6574 unsigned int hroom = skb_headroom(skb); 6575 6576 /* linearize only if resulting skb allocations are order-0: */ 6577 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6578 features &= ~NETIF_F_SG; 6579 } 6580 6581 return vlan_features_check(skb, features); 6582 } 6583 EXPORT_SYMBOL_GPL(qeth_features_check); 6584 6585 static int __init qeth_core_init(void) 6586 { 6587 int rc; 6588 6589 pr_info("loading core functions\n"); 6590 INIT_LIST_HEAD(&qeth_core_card_list.list); 6591 INIT_LIST_HEAD(&qeth_dbf_list); 6592 rwlock_init(&qeth_core_card_list.rwlock); 6593 mutex_init(&qeth_mod_mutex); 6594 6595 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6596 if (!qeth_wq) { 6597 rc = -ENOMEM; 6598 goto out_err; 6599 } 6600 6601 rc = qeth_register_dbf_views(); 6602 if (rc) 6603 goto dbf_err; 6604 qeth_core_root_dev = root_device_register("qeth"); 6605 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6606 if (rc) 6607 goto register_err; 6608 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6609 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6610 if (!qeth_core_header_cache) { 6611 rc = -ENOMEM; 6612 goto slab_err; 6613 } 6614 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6615 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6616 if (!qeth_qdio_outbuf_cache) { 6617 rc = -ENOMEM; 6618 goto cqslab_err; 6619 } 6620 rc = ccw_driver_register(&qeth_ccw_driver); 6621 if (rc) 6622 goto ccw_err; 6623 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6624 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6625 if (rc) 6626 goto ccwgroup_err; 6627 6628 return 0; 6629 6630 ccwgroup_err: 6631 ccw_driver_unregister(&qeth_ccw_driver); 6632 ccw_err: 6633 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6634 cqslab_err: 6635 kmem_cache_destroy(qeth_core_header_cache); 6636 slab_err: 6637 root_device_unregister(qeth_core_root_dev); 6638 register_err: 6639 qeth_unregister_dbf_views(); 6640 dbf_err: 6641 destroy_workqueue(qeth_wq); 6642 out_err: 6643 pr_err("Initializing the qeth device driver failed\n"); 6644 return rc; 6645 } 6646 6647 static void __exit qeth_core_exit(void) 6648 { 6649 qeth_clear_dbf_list(); 6650 destroy_workqueue(qeth_wq); 6651 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6652 ccw_driver_unregister(&qeth_ccw_driver); 6653 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6654 kmem_cache_destroy(qeth_core_header_cache); 6655 root_device_unregister(qeth_core_root_dev); 6656 qeth_unregister_dbf_views(); 6657 pr_info("core functions removed\n"); 6658 } 6659 6660 module_init(qeth_core_init); 6661 module_exit(qeth_core_exit); 6662 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6663 MODULE_DESCRIPTION("qeth core functions"); 6664 MODULE_LICENSE("GPL"); 6665