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