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/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/string.h> 16 #include <linux/errno.h> 17 #include <linux/kernel.h> 18 #include <linux/ip.h> 19 #include <linux/tcp.h> 20 #include <linux/mii.h> 21 #include <linux/kthread.h> 22 #include <linux/slab.h> 23 #include <linux/if_vlan.h> 24 #include <linux/netdevice.h> 25 #include <linux/netdev_features.h> 26 #include <linux/skbuff.h> 27 28 #include <net/iucv/af_iucv.h> 29 #include <net/dsfield.h> 30 31 #include <asm/ebcdic.h> 32 #include <asm/chpid.h> 33 #include <asm/io.h> 34 #include <asm/sysinfo.h> 35 #include <asm/compat.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 void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 77 struct qeth_qdio_out_buffer *buf, 78 enum qeth_qdio_buffer_states newbufstate); 79 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 80 81 struct workqueue_struct *qeth_wq; 82 EXPORT_SYMBOL_GPL(qeth_wq); 83 84 int qeth_card_hw_is_reachable(struct qeth_card *card) 85 { 86 return (card->state == CARD_STATE_SOFTSETUP) || 87 (card->state == CARD_STATE_UP); 88 } 89 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 90 91 static void qeth_close_dev_handler(struct work_struct *work) 92 { 93 struct qeth_card *card; 94 95 card = container_of(work, struct qeth_card, close_dev_work); 96 QETH_CARD_TEXT(card, 2, "cldevhdl"); 97 rtnl_lock(); 98 dev_close(card->dev); 99 rtnl_unlock(); 100 ccwgroup_set_offline(card->gdev); 101 } 102 103 void qeth_close_dev(struct qeth_card *card) 104 { 105 QETH_CARD_TEXT(card, 2, "cldevsubm"); 106 queue_work(qeth_wq, &card->close_dev_work); 107 } 108 EXPORT_SYMBOL_GPL(qeth_close_dev); 109 110 static const char *qeth_get_cardname(struct qeth_card *card) 111 { 112 if (card->info.guestlan) { 113 switch (card->info.type) { 114 case QETH_CARD_TYPE_OSD: 115 return " Virtual NIC QDIO"; 116 case QETH_CARD_TYPE_IQD: 117 return " Virtual NIC Hiper"; 118 case QETH_CARD_TYPE_OSM: 119 return " Virtual NIC QDIO - OSM"; 120 case QETH_CARD_TYPE_OSX: 121 return " Virtual NIC QDIO - OSX"; 122 default: 123 return " unknown"; 124 } 125 } else { 126 switch (card->info.type) { 127 case QETH_CARD_TYPE_OSD: 128 return " OSD Express"; 129 case QETH_CARD_TYPE_IQD: 130 return " HiperSockets"; 131 case QETH_CARD_TYPE_OSN: 132 return " OSN QDIO"; 133 case QETH_CARD_TYPE_OSM: 134 return " OSM QDIO"; 135 case QETH_CARD_TYPE_OSX: 136 return " OSX QDIO"; 137 default: 138 return " unknown"; 139 } 140 } 141 return " n/a"; 142 } 143 144 /* max length to be returned: 14 */ 145 const char *qeth_get_cardname_short(struct qeth_card *card) 146 { 147 if (card->info.guestlan) { 148 switch (card->info.type) { 149 case QETH_CARD_TYPE_OSD: 150 return "Virt.NIC QDIO"; 151 case QETH_CARD_TYPE_IQD: 152 return "Virt.NIC Hiper"; 153 case QETH_CARD_TYPE_OSM: 154 return "Virt.NIC OSM"; 155 case QETH_CARD_TYPE_OSX: 156 return "Virt.NIC OSX"; 157 default: 158 return "unknown"; 159 } 160 } else { 161 switch (card->info.type) { 162 case QETH_CARD_TYPE_OSD: 163 switch (card->info.link_type) { 164 case QETH_LINK_TYPE_FAST_ETH: 165 return "OSD_100"; 166 case QETH_LINK_TYPE_HSTR: 167 return "HSTR"; 168 case QETH_LINK_TYPE_GBIT_ETH: 169 return "OSD_1000"; 170 case QETH_LINK_TYPE_10GBIT_ETH: 171 return "OSD_10GIG"; 172 case QETH_LINK_TYPE_LANE_ETH100: 173 return "OSD_FE_LANE"; 174 case QETH_LINK_TYPE_LANE_TR: 175 return "OSD_TR_LANE"; 176 case QETH_LINK_TYPE_LANE_ETH1000: 177 return "OSD_GbE_LANE"; 178 case QETH_LINK_TYPE_LANE: 179 return "OSD_ATM_LANE"; 180 default: 181 return "OSD_Express"; 182 } 183 case QETH_CARD_TYPE_IQD: 184 return "HiperSockets"; 185 case QETH_CARD_TYPE_OSN: 186 return "OSN"; 187 case QETH_CARD_TYPE_OSM: 188 return "OSM_1000"; 189 case QETH_CARD_TYPE_OSX: 190 return "OSX_10GIG"; 191 default: 192 return "unknown"; 193 } 194 } 195 return "n/a"; 196 } 197 198 void qeth_set_recovery_task(struct qeth_card *card) 199 { 200 card->recovery_task = current; 201 } 202 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 203 204 void qeth_clear_recovery_task(struct qeth_card *card) 205 { 206 card->recovery_task = NULL; 207 } 208 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 209 210 static bool qeth_is_recovery_task(const struct qeth_card *card) 211 { 212 return card->recovery_task == current; 213 } 214 215 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 216 int clear_start_mask) 217 { 218 unsigned long flags; 219 220 spin_lock_irqsave(&card->thread_mask_lock, flags); 221 card->thread_allowed_mask = threads; 222 if (clear_start_mask) 223 card->thread_start_mask &= threads; 224 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 225 wake_up(&card->wait_q); 226 } 227 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 228 229 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 230 { 231 unsigned long flags; 232 int rc = 0; 233 234 spin_lock_irqsave(&card->thread_mask_lock, flags); 235 rc = (card->thread_running_mask & threads); 236 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 237 return rc; 238 } 239 EXPORT_SYMBOL_GPL(qeth_threads_running); 240 241 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 242 { 243 if (qeth_is_recovery_task(card)) 244 return 0; 245 return wait_event_interruptible(card->wait_q, 246 qeth_threads_running(card, threads) == 0); 247 } 248 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 249 250 void qeth_clear_working_pool_list(struct qeth_card *card) 251 { 252 struct qeth_buffer_pool_entry *pool_entry, *tmp; 253 254 QETH_CARD_TEXT(card, 5, "clwrklst"); 255 list_for_each_entry_safe(pool_entry, tmp, 256 &card->qdio.in_buf_pool.entry_list, list){ 257 list_del(&pool_entry->list); 258 } 259 } 260 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 261 262 static int qeth_alloc_buffer_pool(struct qeth_card *card) 263 { 264 struct qeth_buffer_pool_entry *pool_entry; 265 void *ptr; 266 int i, j; 267 268 QETH_CARD_TEXT(card, 5, "alocpool"); 269 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 270 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 271 if (!pool_entry) { 272 qeth_free_buffer_pool(card); 273 return -ENOMEM; 274 } 275 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 276 ptr = (void *) __get_free_page(GFP_KERNEL); 277 if (!ptr) { 278 while (j > 0) 279 free_page((unsigned long) 280 pool_entry->elements[--j]); 281 kfree(pool_entry); 282 qeth_free_buffer_pool(card); 283 return -ENOMEM; 284 } 285 pool_entry->elements[j] = ptr; 286 } 287 list_add(&pool_entry->init_list, 288 &card->qdio.init_pool.entry_list); 289 } 290 return 0; 291 } 292 293 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 294 { 295 QETH_CARD_TEXT(card, 2, "realcbp"); 296 297 if ((card->state != CARD_STATE_DOWN) && 298 (card->state != CARD_STATE_RECOVER)) 299 return -EPERM; 300 301 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 302 qeth_clear_working_pool_list(card); 303 qeth_free_buffer_pool(card); 304 card->qdio.in_buf_pool.buf_count = bufcnt; 305 card->qdio.init_pool.buf_count = bufcnt; 306 return qeth_alloc_buffer_pool(card); 307 } 308 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 309 310 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 311 { 312 if (!q) 313 return; 314 315 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 316 kfree(q); 317 } 318 319 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 320 { 321 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 322 int i; 323 324 if (!q) 325 return NULL; 326 327 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 328 kfree(q); 329 return NULL; 330 } 331 332 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 333 q->bufs[i].buffer = q->qdio_bufs[i]; 334 335 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 336 return q; 337 } 338 339 static int qeth_cq_init(struct qeth_card *card) 340 { 341 int rc; 342 343 if (card->options.cq == QETH_CQ_ENABLED) { 344 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 345 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 346 QDIO_MAX_BUFFERS_PER_Q); 347 card->qdio.c_q->next_buf_to_init = 127; 348 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 349 card->qdio.no_in_queues - 1, 0, 350 127); 351 if (rc) { 352 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 353 goto out; 354 } 355 } 356 rc = 0; 357 out: 358 return rc; 359 } 360 361 static int qeth_alloc_cq(struct qeth_card *card) 362 { 363 int rc; 364 365 if (card->options.cq == QETH_CQ_ENABLED) { 366 int i; 367 struct qdio_outbuf_state *outbuf_states; 368 369 QETH_DBF_TEXT(SETUP, 2, "cqon"); 370 card->qdio.c_q = qeth_alloc_qdio_queue(); 371 if (!card->qdio.c_q) { 372 rc = -1; 373 goto kmsg_out; 374 } 375 card->qdio.no_in_queues = 2; 376 card->qdio.out_bufstates = 377 kzalloc(card->qdio.no_out_queues * 378 QDIO_MAX_BUFFERS_PER_Q * 379 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 380 outbuf_states = card->qdio.out_bufstates; 381 if (outbuf_states == NULL) { 382 rc = -1; 383 goto free_cq_out; 384 } 385 for (i = 0; i < card->qdio.no_out_queues; ++i) { 386 card->qdio.out_qs[i]->bufstates = outbuf_states; 387 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 388 } 389 } else { 390 QETH_DBF_TEXT(SETUP, 2, "nocq"); 391 card->qdio.c_q = NULL; 392 card->qdio.no_in_queues = 1; 393 } 394 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 395 rc = 0; 396 out: 397 return rc; 398 free_cq_out: 399 qeth_free_qdio_queue(card->qdio.c_q); 400 card->qdio.c_q = NULL; 401 kmsg_out: 402 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 403 goto out; 404 } 405 406 static void qeth_free_cq(struct qeth_card *card) 407 { 408 if (card->qdio.c_q) { 409 --card->qdio.no_in_queues; 410 qeth_free_qdio_queue(card->qdio.c_q); 411 card->qdio.c_q = NULL; 412 } 413 kfree(card->qdio.out_bufstates); 414 card->qdio.out_bufstates = NULL; 415 } 416 417 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 418 int delayed) 419 { 420 enum iucv_tx_notify n; 421 422 switch (sbalf15) { 423 case 0: 424 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 425 break; 426 case 4: 427 case 16: 428 case 17: 429 case 18: 430 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 431 TX_NOTIFY_UNREACHABLE; 432 break; 433 default: 434 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 435 TX_NOTIFY_GENERALERROR; 436 break; 437 } 438 439 return n; 440 } 441 442 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 443 int forced_cleanup) 444 { 445 if (q->card->options.cq != QETH_CQ_ENABLED) 446 return; 447 448 if (q->bufs[bidx]->next_pending != NULL) { 449 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 450 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 451 452 while (c) { 453 if (forced_cleanup || 454 atomic_read(&c->state) == 455 QETH_QDIO_BUF_HANDLED_DELAYED) { 456 struct qeth_qdio_out_buffer *f = c; 457 QETH_CARD_TEXT(f->q->card, 5, "fp"); 458 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 459 /* release here to avoid interleaving between 460 outbound tasklet and inbound tasklet 461 regarding notifications and lifecycle */ 462 qeth_release_skbs(c); 463 464 c = f->next_pending; 465 WARN_ON_ONCE(head->next_pending != f); 466 head->next_pending = c; 467 kmem_cache_free(qeth_qdio_outbuf_cache, f); 468 } else { 469 head = c; 470 c = c->next_pending; 471 } 472 473 } 474 } 475 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 476 QETH_QDIO_BUF_HANDLED_DELAYED)) { 477 /* for recovery situations */ 478 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 479 qeth_init_qdio_out_buf(q, bidx); 480 QETH_CARD_TEXT(q->card, 2, "clprecov"); 481 } 482 } 483 484 485 static void qeth_qdio_handle_aob(struct qeth_card *card, 486 unsigned long phys_aob_addr) 487 { 488 struct qaob *aob; 489 struct qeth_qdio_out_buffer *buffer; 490 enum iucv_tx_notify notification; 491 492 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 493 QETH_CARD_TEXT(card, 5, "haob"); 494 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 495 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 496 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 497 498 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 499 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 500 notification = TX_NOTIFY_OK; 501 } else { 502 WARN_ON_ONCE(atomic_read(&buffer->state) != 503 QETH_QDIO_BUF_PENDING); 504 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 505 notification = TX_NOTIFY_DELAYED_OK; 506 } 507 508 if (aob->aorc != 0) { 509 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 510 notification = qeth_compute_cq_notification(aob->aorc, 1); 511 } 512 qeth_notify_skbs(buffer->q, buffer, notification); 513 514 buffer->aob = NULL; 515 qeth_clear_output_buffer(buffer->q, buffer, 516 QETH_QDIO_BUF_HANDLED_DELAYED); 517 518 /* from here on: do not touch buffer anymore */ 519 qdio_release_aob(aob); 520 } 521 522 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 523 { 524 return card->options.cq == QETH_CQ_ENABLED && 525 card->qdio.c_q != NULL && 526 queue != 0 && 527 queue == card->qdio.no_in_queues - 1; 528 } 529 530 static int __qeth_issue_next_read(struct qeth_card *card) 531 { 532 int rc; 533 struct qeth_cmd_buffer *iob; 534 535 QETH_CARD_TEXT(card, 5, "issnxrd"); 536 if (card->read.state != CH_STATE_UP) 537 return -EIO; 538 iob = qeth_get_buffer(&card->read); 539 if (!iob) { 540 dev_warn(&card->gdev->dev, "The qeth device driver " 541 "failed to recover an error on the device\n"); 542 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 543 "available\n", dev_name(&card->gdev->dev)); 544 return -ENOMEM; 545 } 546 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 547 QETH_CARD_TEXT(card, 6, "noirqpnd"); 548 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 549 (addr_t) iob, 0, 0); 550 if (rc) { 551 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 552 "rc=%i\n", dev_name(&card->gdev->dev), rc); 553 atomic_set(&card->read.irq_pending, 0); 554 card->read_or_write_problem = 1; 555 qeth_schedule_recovery(card); 556 wake_up(&card->wait_q); 557 } 558 return rc; 559 } 560 561 static int qeth_issue_next_read(struct qeth_card *card) 562 { 563 int ret; 564 565 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 566 ret = __qeth_issue_next_read(card); 567 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 568 569 return ret; 570 } 571 572 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 573 { 574 struct qeth_reply *reply; 575 576 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 577 if (reply) { 578 refcount_set(&reply->refcnt, 1); 579 atomic_set(&reply->received, 0); 580 reply->card = card; 581 } 582 return reply; 583 } 584 585 static void qeth_get_reply(struct qeth_reply *reply) 586 { 587 refcount_inc(&reply->refcnt); 588 } 589 590 static void qeth_put_reply(struct qeth_reply *reply) 591 { 592 if (refcount_dec_and_test(&reply->refcnt)) 593 kfree(reply); 594 } 595 596 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 597 struct qeth_card *card) 598 { 599 char *ipa_name; 600 int com = cmd->hdr.command; 601 ipa_name = qeth_get_ipa_cmd_name(com); 602 if (rc) 603 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 604 "x%X \"%s\"\n", 605 ipa_name, com, dev_name(&card->gdev->dev), 606 QETH_CARD_IFNAME(card), rc, 607 qeth_get_ipa_msg(rc)); 608 else 609 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 610 ipa_name, com, dev_name(&card->gdev->dev), 611 QETH_CARD_IFNAME(card)); 612 } 613 614 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 615 struct qeth_cmd_buffer *iob) 616 { 617 struct qeth_ipa_cmd *cmd = NULL; 618 619 QETH_CARD_TEXT(card, 5, "chkipad"); 620 if (IS_IPA(iob->data)) { 621 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 622 if (IS_IPA_REPLY(cmd)) { 623 if (cmd->hdr.command != IPA_CMD_SETCCID && 624 cmd->hdr.command != IPA_CMD_DELCCID && 625 cmd->hdr.command != IPA_CMD_MODCCID && 626 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 627 qeth_issue_ipa_msg(cmd, 628 cmd->hdr.return_code, card); 629 return cmd; 630 } else { 631 switch (cmd->hdr.command) { 632 case IPA_CMD_STOPLAN: 633 if (cmd->hdr.return_code == 634 IPA_RC_VEPA_TO_VEB_TRANSITION) { 635 dev_err(&card->gdev->dev, 636 "Interface %s is down because the " 637 "adjacent port is no longer in " 638 "reflective relay mode\n", 639 QETH_CARD_IFNAME(card)); 640 qeth_close_dev(card); 641 } else { 642 dev_warn(&card->gdev->dev, 643 "The link for interface %s on CHPID" 644 " 0x%X failed\n", 645 QETH_CARD_IFNAME(card), 646 card->info.chpid); 647 qeth_issue_ipa_msg(cmd, 648 cmd->hdr.return_code, card); 649 } 650 card->lan_online = 0; 651 if (card->dev && netif_carrier_ok(card->dev)) 652 netif_carrier_off(card->dev); 653 return NULL; 654 case IPA_CMD_STARTLAN: 655 dev_info(&card->gdev->dev, 656 "The link for %s on CHPID 0x%X has" 657 " been restored\n", 658 QETH_CARD_IFNAME(card), 659 card->info.chpid); 660 netif_carrier_on(card->dev); 661 card->lan_online = 1; 662 if (card->info.hwtrap) 663 card->info.hwtrap = 2; 664 qeth_schedule_recovery(card); 665 return NULL; 666 case IPA_CMD_SETBRIDGEPORT_IQD: 667 case IPA_CMD_SETBRIDGEPORT_OSA: 668 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 669 if (card->discipline->control_event_handler 670 (card, cmd)) 671 return cmd; 672 else 673 return NULL; 674 case IPA_CMD_MODCCID: 675 return cmd; 676 case IPA_CMD_REGISTER_LOCAL_ADDR: 677 QETH_CARD_TEXT(card, 3, "irla"); 678 break; 679 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 680 QETH_CARD_TEXT(card, 3, "urla"); 681 break; 682 default: 683 QETH_DBF_MESSAGE(2, "Received data is IPA " 684 "but not a reply!\n"); 685 break; 686 } 687 } 688 } 689 return cmd; 690 } 691 692 void qeth_clear_ipacmd_list(struct qeth_card *card) 693 { 694 struct qeth_reply *reply, *r; 695 unsigned long flags; 696 697 QETH_CARD_TEXT(card, 4, "clipalst"); 698 699 spin_lock_irqsave(&card->lock, flags); 700 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 701 qeth_get_reply(reply); 702 reply->rc = -EIO; 703 atomic_inc(&reply->received); 704 list_del_init(&reply->list); 705 wake_up(&reply->wait_q); 706 qeth_put_reply(reply); 707 } 708 spin_unlock_irqrestore(&card->lock, flags); 709 } 710 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 711 712 static int qeth_check_idx_response(struct qeth_card *card, 713 unsigned char *buffer) 714 { 715 if (!buffer) 716 return 0; 717 718 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 719 if ((buffer[2] & 0xc0) == 0xc0) { 720 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n", 721 buffer[4]); 722 QETH_CARD_TEXT(card, 2, "ckidxres"); 723 QETH_CARD_TEXT(card, 2, " idxterm"); 724 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 725 if (buffer[4] == 0xf6) { 726 dev_err(&card->gdev->dev, 727 "The qeth device is not configured " 728 "for the OSI layer required by z/VM\n"); 729 return -EPERM; 730 } 731 return -EIO; 732 } 733 return 0; 734 } 735 736 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 737 { 738 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 739 dev_get_drvdata(&cdev->dev))->dev); 740 return card; 741 } 742 743 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 744 __u32 len) 745 { 746 struct qeth_card *card; 747 748 card = CARD_FROM_CDEV(channel->ccwdev); 749 QETH_CARD_TEXT(card, 4, "setupccw"); 750 if (channel == &card->read) 751 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 752 else 753 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 754 channel->ccw.count = len; 755 channel->ccw.cda = (__u32) __pa(iob); 756 } 757 758 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 759 { 760 __u8 index; 761 762 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 763 index = channel->io_buf_no; 764 do { 765 if (channel->iob[index].state == BUF_STATE_FREE) { 766 channel->iob[index].state = BUF_STATE_LOCKED; 767 channel->io_buf_no = (channel->io_buf_no + 1) % 768 QETH_CMD_BUFFER_NO; 769 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 770 return channel->iob + index; 771 } 772 index = (index + 1) % QETH_CMD_BUFFER_NO; 773 } while (index != channel->io_buf_no); 774 775 return NULL; 776 } 777 778 void qeth_release_buffer(struct qeth_channel *channel, 779 struct qeth_cmd_buffer *iob) 780 { 781 unsigned long flags; 782 783 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 784 spin_lock_irqsave(&channel->iob_lock, flags); 785 memset(iob->data, 0, QETH_BUFSIZE); 786 iob->state = BUF_STATE_FREE; 787 iob->callback = qeth_send_control_data_cb; 788 iob->rc = 0; 789 spin_unlock_irqrestore(&channel->iob_lock, flags); 790 wake_up(&channel->wait_q); 791 } 792 EXPORT_SYMBOL_GPL(qeth_release_buffer); 793 794 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 795 { 796 struct qeth_cmd_buffer *buffer = NULL; 797 unsigned long flags; 798 799 spin_lock_irqsave(&channel->iob_lock, flags); 800 buffer = __qeth_get_buffer(channel); 801 spin_unlock_irqrestore(&channel->iob_lock, flags); 802 return buffer; 803 } 804 805 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 806 { 807 struct qeth_cmd_buffer *buffer; 808 wait_event(channel->wait_q, 809 ((buffer = qeth_get_buffer(channel)) != NULL)); 810 return buffer; 811 } 812 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 813 814 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 815 { 816 int cnt; 817 818 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 819 qeth_release_buffer(channel, &channel->iob[cnt]); 820 channel->io_buf_no = 0; 821 } 822 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 823 824 static void qeth_send_control_data_cb(struct qeth_channel *channel, 825 struct qeth_cmd_buffer *iob) 826 { 827 struct qeth_card *card; 828 struct qeth_reply *reply, *r; 829 struct qeth_ipa_cmd *cmd; 830 unsigned long flags; 831 int keep_reply; 832 int rc = 0; 833 834 card = CARD_FROM_CDEV(channel->ccwdev); 835 QETH_CARD_TEXT(card, 4, "sndctlcb"); 836 rc = qeth_check_idx_response(card, iob->data); 837 switch (rc) { 838 case 0: 839 break; 840 case -EIO: 841 qeth_clear_ipacmd_list(card); 842 qeth_schedule_recovery(card); 843 /* fall through */ 844 default: 845 goto out; 846 } 847 848 cmd = qeth_check_ipa_data(card, iob); 849 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 850 goto out; 851 /*in case of OSN : check if cmd is set */ 852 if (card->info.type == QETH_CARD_TYPE_OSN && 853 cmd && 854 cmd->hdr.command != IPA_CMD_STARTLAN && 855 card->osn_info.assist_cb != NULL) { 856 card->osn_info.assist_cb(card->dev, cmd); 857 goto out; 858 } 859 860 spin_lock_irqsave(&card->lock, flags); 861 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 862 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 863 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 864 qeth_get_reply(reply); 865 list_del_init(&reply->list); 866 spin_unlock_irqrestore(&card->lock, flags); 867 keep_reply = 0; 868 if (reply->callback != NULL) { 869 if (cmd) { 870 reply->offset = (__u16)((char *)cmd - 871 (char *)iob->data); 872 keep_reply = reply->callback(card, 873 reply, 874 (unsigned long)cmd); 875 } else 876 keep_reply = reply->callback(card, 877 reply, 878 (unsigned long)iob); 879 } 880 if (cmd) 881 reply->rc = (u16) cmd->hdr.return_code; 882 else if (iob->rc) 883 reply->rc = iob->rc; 884 if (keep_reply) { 885 spin_lock_irqsave(&card->lock, flags); 886 list_add_tail(&reply->list, 887 &card->cmd_waiter_list); 888 spin_unlock_irqrestore(&card->lock, flags); 889 } else { 890 atomic_inc(&reply->received); 891 wake_up(&reply->wait_q); 892 } 893 qeth_put_reply(reply); 894 goto out; 895 } 896 } 897 spin_unlock_irqrestore(&card->lock, flags); 898 out: 899 memcpy(&card->seqno.pdu_hdr_ack, 900 QETH_PDU_HEADER_SEQ_NO(iob->data), 901 QETH_SEQ_NO_LENGTH); 902 qeth_release_buffer(channel, iob); 903 } 904 905 static int qeth_setup_channel(struct qeth_channel *channel) 906 { 907 int cnt; 908 909 QETH_DBF_TEXT(SETUP, 2, "setupch"); 910 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 911 channel->iob[cnt].data = 912 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 913 if (channel->iob[cnt].data == NULL) 914 break; 915 channel->iob[cnt].state = BUF_STATE_FREE; 916 channel->iob[cnt].channel = channel; 917 channel->iob[cnt].callback = qeth_send_control_data_cb; 918 channel->iob[cnt].rc = 0; 919 } 920 if (cnt < QETH_CMD_BUFFER_NO) { 921 while (cnt-- > 0) 922 kfree(channel->iob[cnt].data); 923 return -ENOMEM; 924 } 925 channel->io_buf_no = 0; 926 atomic_set(&channel->irq_pending, 0); 927 spin_lock_init(&channel->iob_lock); 928 929 init_waitqueue_head(&channel->wait_q); 930 return 0; 931 } 932 933 static int qeth_set_thread_start_bit(struct qeth_card *card, 934 unsigned long thread) 935 { 936 unsigned long flags; 937 938 spin_lock_irqsave(&card->thread_mask_lock, flags); 939 if (!(card->thread_allowed_mask & thread) || 940 (card->thread_start_mask & thread)) { 941 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 942 return -EPERM; 943 } 944 card->thread_start_mask |= thread; 945 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 946 return 0; 947 } 948 949 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 950 { 951 unsigned long flags; 952 953 spin_lock_irqsave(&card->thread_mask_lock, flags); 954 card->thread_start_mask &= ~thread; 955 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 956 wake_up(&card->wait_q); 957 } 958 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 959 960 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 961 { 962 unsigned long flags; 963 964 spin_lock_irqsave(&card->thread_mask_lock, flags); 965 card->thread_running_mask &= ~thread; 966 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 967 wake_up_all(&card->wait_q); 968 } 969 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 970 971 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 972 { 973 unsigned long flags; 974 int rc = 0; 975 976 spin_lock_irqsave(&card->thread_mask_lock, flags); 977 if (card->thread_start_mask & thread) { 978 if ((card->thread_allowed_mask & thread) && 979 !(card->thread_running_mask & thread)) { 980 rc = 1; 981 card->thread_start_mask &= ~thread; 982 card->thread_running_mask |= thread; 983 } else 984 rc = -EPERM; 985 } 986 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 987 return rc; 988 } 989 990 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 991 { 992 int rc = 0; 993 994 wait_event(card->wait_q, 995 (rc = __qeth_do_run_thread(card, thread)) >= 0); 996 return rc; 997 } 998 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 999 1000 void qeth_schedule_recovery(struct qeth_card *card) 1001 { 1002 QETH_CARD_TEXT(card, 2, "startrec"); 1003 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 1004 schedule_work(&card->kernel_thread_starter); 1005 } 1006 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 1007 1008 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 1009 { 1010 int dstat, cstat; 1011 char *sense; 1012 struct qeth_card *card; 1013 1014 sense = (char *) irb->ecw; 1015 cstat = irb->scsw.cmd.cstat; 1016 dstat = irb->scsw.cmd.dstat; 1017 card = CARD_FROM_CDEV(cdev); 1018 1019 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1020 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1021 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1022 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1023 dev_warn(&cdev->dev, "The qeth device driver " 1024 "failed to recover an error on the device\n"); 1025 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1026 dev_name(&cdev->dev), dstat, cstat); 1027 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1028 16, 1, irb, 64, 1); 1029 return 1; 1030 } 1031 1032 if (dstat & DEV_STAT_UNIT_CHECK) { 1033 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1034 SENSE_RESETTING_EVENT_FLAG) { 1035 QETH_CARD_TEXT(card, 2, "REVIND"); 1036 return 1; 1037 } 1038 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1039 SENSE_COMMAND_REJECT_FLAG) { 1040 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1041 return 1; 1042 } 1043 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1044 QETH_CARD_TEXT(card, 2, "AFFE"); 1045 return 1; 1046 } 1047 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1048 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1049 return 0; 1050 } 1051 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1052 return 1; 1053 } 1054 return 0; 1055 } 1056 1057 static long __qeth_check_irb_error(struct ccw_device *cdev, 1058 unsigned long intparm, struct irb *irb) 1059 { 1060 struct qeth_card *card; 1061 1062 card = CARD_FROM_CDEV(cdev); 1063 1064 if (!card || !IS_ERR(irb)) 1065 return 0; 1066 1067 switch (PTR_ERR(irb)) { 1068 case -EIO: 1069 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1070 dev_name(&cdev->dev)); 1071 QETH_CARD_TEXT(card, 2, "ckirberr"); 1072 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1073 break; 1074 case -ETIMEDOUT: 1075 dev_warn(&cdev->dev, "A hardware operation timed out" 1076 " on the device\n"); 1077 QETH_CARD_TEXT(card, 2, "ckirberr"); 1078 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1079 if (intparm == QETH_RCD_PARM) { 1080 if (card->data.ccwdev == cdev) { 1081 card->data.state = CH_STATE_DOWN; 1082 wake_up(&card->wait_q); 1083 } 1084 } 1085 break; 1086 default: 1087 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1088 dev_name(&cdev->dev), PTR_ERR(irb)); 1089 QETH_CARD_TEXT(card, 2, "ckirberr"); 1090 QETH_CARD_TEXT(card, 2, " rc???"); 1091 } 1092 return PTR_ERR(irb); 1093 } 1094 1095 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1096 struct irb *irb) 1097 { 1098 int rc; 1099 int cstat, dstat; 1100 struct qeth_cmd_buffer *iob = NULL; 1101 struct qeth_channel *channel; 1102 struct qeth_card *card; 1103 1104 card = CARD_FROM_CDEV(cdev); 1105 if (!card) 1106 return; 1107 1108 QETH_CARD_TEXT(card, 5, "irq"); 1109 1110 if (card->read.ccwdev == cdev) { 1111 channel = &card->read; 1112 QETH_CARD_TEXT(card, 5, "read"); 1113 } else if (card->write.ccwdev == cdev) { 1114 channel = &card->write; 1115 QETH_CARD_TEXT(card, 5, "write"); 1116 } else { 1117 channel = &card->data; 1118 QETH_CARD_TEXT(card, 5, "data"); 1119 } 1120 1121 if (qeth_intparm_is_iob(intparm)) 1122 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1123 1124 if (__qeth_check_irb_error(cdev, intparm, irb)) { 1125 /* IO was terminated, free its resources. */ 1126 if (iob) 1127 qeth_release_buffer(iob->channel, iob); 1128 atomic_set(&channel->irq_pending, 0); 1129 wake_up(&card->wait_q); 1130 return; 1131 } 1132 1133 atomic_set(&channel->irq_pending, 0); 1134 1135 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1136 channel->state = CH_STATE_STOPPED; 1137 1138 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1139 channel->state = CH_STATE_HALTED; 1140 1141 /*let's wake up immediately on data channel*/ 1142 if ((channel == &card->data) && (intparm != 0) && 1143 (intparm != QETH_RCD_PARM)) 1144 goto out; 1145 1146 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1147 QETH_CARD_TEXT(card, 6, "clrchpar"); 1148 /* we don't have to handle this further */ 1149 intparm = 0; 1150 } 1151 if (intparm == QETH_HALT_CHANNEL_PARM) { 1152 QETH_CARD_TEXT(card, 6, "hltchpar"); 1153 /* we don't have to handle this further */ 1154 intparm = 0; 1155 } 1156 1157 cstat = irb->scsw.cmd.cstat; 1158 dstat = irb->scsw.cmd.dstat; 1159 1160 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1161 (dstat & DEV_STAT_UNIT_CHECK) || 1162 (cstat)) { 1163 if (irb->esw.esw0.erw.cons) { 1164 dev_warn(&channel->ccwdev->dev, 1165 "The qeth device driver failed to recover " 1166 "an error on the device\n"); 1167 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1168 "0x%X dstat 0x%X\n", 1169 dev_name(&channel->ccwdev->dev), cstat, dstat); 1170 print_hex_dump(KERN_WARNING, "qeth: irb ", 1171 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1172 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1173 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1174 } 1175 if (intparm == QETH_RCD_PARM) { 1176 channel->state = CH_STATE_DOWN; 1177 goto out; 1178 } 1179 rc = qeth_get_problem(cdev, irb); 1180 if (rc) { 1181 card->read_or_write_problem = 1; 1182 qeth_clear_ipacmd_list(card); 1183 qeth_schedule_recovery(card); 1184 goto out; 1185 } 1186 } 1187 1188 if (intparm == QETH_RCD_PARM) { 1189 channel->state = CH_STATE_RCD_DONE; 1190 goto out; 1191 } 1192 if (channel == &card->data) 1193 return; 1194 if (channel == &card->read && 1195 channel->state == CH_STATE_UP) 1196 __qeth_issue_next_read(card); 1197 1198 if (iob && iob->callback) 1199 iob->callback(iob->channel, iob); 1200 1201 out: 1202 wake_up(&card->wait_q); 1203 return; 1204 } 1205 1206 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1207 struct qeth_qdio_out_buffer *buf, 1208 enum iucv_tx_notify notification) 1209 { 1210 struct sk_buff *skb; 1211 1212 if (skb_queue_empty(&buf->skb_list)) 1213 goto out; 1214 skb = skb_peek(&buf->skb_list); 1215 while (skb) { 1216 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1217 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1218 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1219 if (skb->sk) { 1220 struct iucv_sock *iucv = iucv_sk(skb->sk); 1221 iucv->sk_txnotify(skb, notification); 1222 } 1223 } 1224 if (skb_queue_is_last(&buf->skb_list, skb)) 1225 skb = NULL; 1226 else 1227 skb = skb_queue_next(&buf->skb_list, skb); 1228 } 1229 out: 1230 return; 1231 } 1232 1233 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1234 { 1235 struct sk_buff *skb; 1236 struct iucv_sock *iucv; 1237 int notify_general_error = 0; 1238 1239 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1240 notify_general_error = 1; 1241 1242 /* release may never happen from within CQ tasklet scope */ 1243 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1244 1245 skb = skb_dequeue(&buf->skb_list); 1246 while (skb) { 1247 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1248 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1249 if (notify_general_error && 1250 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1251 if (skb->sk) { 1252 iucv = iucv_sk(skb->sk); 1253 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1254 } 1255 } 1256 refcount_dec(&skb->users); 1257 dev_kfree_skb_any(skb); 1258 skb = skb_dequeue(&buf->skb_list); 1259 } 1260 } 1261 1262 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1263 struct qeth_qdio_out_buffer *buf, 1264 enum qeth_qdio_buffer_states newbufstate) 1265 { 1266 int i; 1267 1268 /* is PCI flag set on buffer? */ 1269 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1270 atomic_dec(&queue->set_pci_flags_count); 1271 1272 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1273 qeth_release_skbs(buf); 1274 } 1275 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1276 if (buf->buffer->element[i].addr && buf->is_header[i]) 1277 kmem_cache_free(qeth_core_header_cache, 1278 buf->buffer->element[i].addr); 1279 buf->is_header[i] = 0; 1280 buf->buffer->element[i].length = 0; 1281 buf->buffer->element[i].addr = NULL; 1282 buf->buffer->element[i].eflags = 0; 1283 buf->buffer->element[i].sflags = 0; 1284 } 1285 buf->buffer->element[15].eflags = 0; 1286 buf->buffer->element[15].sflags = 0; 1287 buf->next_element_to_fill = 0; 1288 atomic_set(&buf->state, newbufstate); 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], QETH_QDIO_BUF_EMPTY); 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->vlanlock); 1471 spin_lock_init(&card->mclock); 1472 spin_lock_init(&card->lock); 1473 spin_lock_init(&card->ip_lock); 1474 spin_lock_init(&card->thread_mask_lock); 1475 mutex_init(&card->conf_mutex); 1476 mutex_init(&card->discipline_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 if (card->info.type == QETH_CARD_TYPE_IQD) 1541 card->info.is_multicast_different = 0x0103; 1542 qeth_update_from_chp_desc(card); 1543 } 1544 1545 static int qeth_clear_channel(struct qeth_channel *channel) 1546 { 1547 unsigned long flags; 1548 struct qeth_card *card; 1549 int rc; 1550 1551 card = CARD_FROM_CDEV(channel->ccwdev); 1552 QETH_CARD_TEXT(card, 3, "clearch"); 1553 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1554 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1555 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1556 1557 if (rc) 1558 return rc; 1559 rc = wait_event_interruptible_timeout(card->wait_q, 1560 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1561 if (rc == -ERESTARTSYS) 1562 return rc; 1563 if (channel->state != CH_STATE_STOPPED) 1564 return -ETIME; 1565 channel->state = CH_STATE_DOWN; 1566 return 0; 1567 } 1568 1569 static int qeth_halt_channel(struct qeth_channel *channel) 1570 { 1571 unsigned long flags; 1572 struct qeth_card *card; 1573 int rc; 1574 1575 card = CARD_FROM_CDEV(channel->ccwdev); 1576 QETH_CARD_TEXT(card, 3, "haltch"); 1577 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1578 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1579 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1580 1581 if (rc) 1582 return rc; 1583 rc = wait_event_interruptible_timeout(card->wait_q, 1584 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1585 if (rc == -ERESTARTSYS) 1586 return rc; 1587 if (channel->state != CH_STATE_HALTED) 1588 return -ETIME; 1589 return 0; 1590 } 1591 1592 static int qeth_halt_channels(struct qeth_card *card) 1593 { 1594 int rc1 = 0, rc2 = 0, rc3 = 0; 1595 1596 QETH_CARD_TEXT(card, 3, "haltchs"); 1597 rc1 = qeth_halt_channel(&card->read); 1598 rc2 = qeth_halt_channel(&card->write); 1599 rc3 = qeth_halt_channel(&card->data); 1600 if (rc1) 1601 return rc1; 1602 if (rc2) 1603 return rc2; 1604 return rc3; 1605 } 1606 1607 static int qeth_clear_channels(struct qeth_card *card) 1608 { 1609 int rc1 = 0, rc2 = 0, rc3 = 0; 1610 1611 QETH_CARD_TEXT(card, 3, "clearchs"); 1612 rc1 = qeth_clear_channel(&card->read); 1613 rc2 = qeth_clear_channel(&card->write); 1614 rc3 = qeth_clear_channel(&card->data); 1615 if (rc1) 1616 return rc1; 1617 if (rc2) 1618 return rc2; 1619 return rc3; 1620 } 1621 1622 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1623 { 1624 int rc = 0; 1625 1626 QETH_CARD_TEXT(card, 3, "clhacrd"); 1627 1628 if (halt) 1629 rc = qeth_halt_channels(card); 1630 if (rc) 1631 return rc; 1632 return qeth_clear_channels(card); 1633 } 1634 1635 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1636 { 1637 int rc = 0; 1638 1639 QETH_CARD_TEXT(card, 3, "qdioclr"); 1640 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1641 QETH_QDIO_CLEANING)) { 1642 case QETH_QDIO_ESTABLISHED: 1643 if (card->info.type == QETH_CARD_TYPE_IQD) 1644 rc = qdio_shutdown(CARD_DDEV(card), 1645 QDIO_FLAG_CLEANUP_USING_HALT); 1646 else 1647 rc = qdio_shutdown(CARD_DDEV(card), 1648 QDIO_FLAG_CLEANUP_USING_CLEAR); 1649 if (rc) 1650 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1651 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1652 break; 1653 case QETH_QDIO_CLEANING: 1654 return rc; 1655 default: 1656 break; 1657 } 1658 rc = qeth_clear_halt_card(card, use_halt); 1659 if (rc) 1660 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1661 card->state = CARD_STATE_DOWN; 1662 return rc; 1663 } 1664 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1665 1666 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1667 int *length) 1668 { 1669 struct ciw *ciw; 1670 char *rcd_buf; 1671 int ret; 1672 struct qeth_channel *channel = &card->data; 1673 unsigned long flags; 1674 1675 /* 1676 * scan for RCD command in extended SenseID data 1677 */ 1678 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1679 if (!ciw || ciw->cmd == 0) 1680 return -EOPNOTSUPP; 1681 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1682 if (!rcd_buf) 1683 return -ENOMEM; 1684 1685 channel->ccw.cmd_code = ciw->cmd; 1686 channel->ccw.cda = (__u32) __pa(rcd_buf); 1687 channel->ccw.count = ciw->count; 1688 channel->ccw.flags = CCW_FLAG_SLI; 1689 channel->state = CH_STATE_RCD; 1690 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1691 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1692 QETH_RCD_PARM, LPM_ANYPATH, 0, 1693 QETH_RCD_TIMEOUT); 1694 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1695 if (!ret) 1696 wait_event(card->wait_q, 1697 (channel->state == CH_STATE_RCD_DONE || 1698 channel->state == CH_STATE_DOWN)); 1699 if (channel->state == CH_STATE_DOWN) 1700 ret = -EIO; 1701 else 1702 channel->state = CH_STATE_DOWN; 1703 if (ret) { 1704 kfree(rcd_buf); 1705 *buffer = NULL; 1706 *length = 0; 1707 } else { 1708 *length = ciw->count; 1709 *buffer = rcd_buf; 1710 } 1711 return ret; 1712 } 1713 1714 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1715 { 1716 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1717 card->info.chpid = prcd[30]; 1718 card->info.unit_addr2 = prcd[31]; 1719 card->info.cula = prcd[63]; 1720 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1721 (prcd[0x11] == _ascebc['M'])); 1722 } 1723 1724 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1725 { 1726 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1727 struct diag26c_vnic_resp *response = NULL; 1728 struct diag26c_vnic_req *request = NULL; 1729 struct ccw_dev_id id; 1730 char userid[80]; 1731 int rc = 0; 1732 1733 QETH_DBF_TEXT(SETUP, 2, "vmlayer"); 1734 1735 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1736 if (rc) 1737 goto out; 1738 1739 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1740 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1741 if (!request || !response) { 1742 rc = -ENOMEM; 1743 goto out; 1744 } 1745 1746 ccw_device_get_id(CARD_RDEV(card), &id); 1747 request->resp_buf_len = sizeof(*response); 1748 request->resp_version = DIAG26C_VERSION6_VM65918; 1749 request->req_format = DIAG26C_VNIC_INFO; 1750 ASCEBC(userid, 8); 1751 memcpy(&request->sys_name, userid, 8); 1752 request->devno = id.devno; 1753 1754 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1755 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1756 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1757 if (rc) 1758 goto out; 1759 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1760 1761 if (request->resp_buf_len < sizeof(*response) || 1762 response->version != request->resp_version) { 1763 rc = -EIO; 1764 goto out; 1765 } 1766 1767 if (response->protocol == VNIC_INFO_PROT_L2) 1768 disc = QETH_DISCIPLINE_LAYER2; 1769 else if (response->protocol == VNIC_INFO_PROT_L3) 1770 disc = QETH_DISCIPLINE_LAYER3; 1771 1772 out: 1773 kfree(response); 1774 kfree(request); 1775 if (rc) 1776 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc); 1777 return disc; 1778 } 1779 1780 /* Determine whether the device requires a specific layer discipline */ 1781 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1782 { 1783 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1784 1785 if (card->info.type == QETH_CARD_TYPE_OSM || 1786 card->info.type == QETH_CARD_TYPE_OSN) 1787 disc = QETH_DISCIPLINE_LAYER2; 1788 else if (card->info.guestlan) 1789 disc = (card->info.type == QETH_CARD_TYPE_IQD) ? 1790 QETH_DISCIPLINE_LAYER3 : 1791 qeth_vm_detect_layer(card); 1792 1793 switch (disc) { 1794 case QETH_DISCIPLINE_LAYER2: 1795 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1796 break; 1797 case QETH_DISCIPLINE_LAYER3: 1798 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1799 break; 1800 default: 1801 QETH_DBF_TEXT(SETUP, 3, "force no"); 1802 } 1803 1804 return disc; 1805 } 1806 1807 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1808 { 1809 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1810 1811 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1812 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1813 card->info.blkt.time_total = 0; 1814 card->info.blkt.inter_packet = 0; 1815 card->info.blkt.inter_packet_jumbo = 0; 1816 } else { 1817 card->info.blkt.time_total = 250; 1818 card->info.blkt.inter_packet = 5; 1819 card->info.blkt.inter_packet_jumbo = 15; 1820 } 1821 } 1822 1823 static void qeth_init_tokens(struct qeth_card *card) 1824 { 1825 card->token.issuer_rm_w = 0x00010103UL; 1826 card->token.cm_filter_w = 0x00010108UL; 1827 card->token.cm_connection_w = 0x0001010aUL; 1828 card->token.ulp_filter_w = 0x0001010bUL; 1829 card->token.ulp_connection_w = 0x0001010dUL; 1830 } 1831 1832 static void qeth_init_func_level(struct qeth_card *card) 1833 { 1834 switch (card->info.type) { 1835 case QETH_CARD_TYPE_IQD: 1836 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1837 break; 1838 case QETH_CARD_TYPE_OSD: 1839 case QETH_CARD_TYPE_OSN: 1840 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1841 break; 1842 default: 1843 break; 1844 } 1845 } 1846 1847 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1848 void (*idx_reply_cb)(struct qeth_channel *, 1849 struct qeth_cmd_buffer *)) 1850 { 1851 struct qeth_cmd_buffer *iob; 1852 unsigned long flags; 1853 int rc; 1854 struct qeth_card *card; 1855 1856 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1857 card = CARD_FROM_CDEV(channel->ccwdev); 1858 iob = qeth_get_buffer(channel); 1859 if (!iob) 1860 return -ENOMEM; 1861 iob->callback = idx_reply_cb; 1862 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1863 channel->ccw.count = QETH_BUFSIZE; 1864 channel->ccw.cda = (__u32) __pa(iob->data); 1865 1866 wait_event(card->wait_q, 1867 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1868 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1869 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1870 rc = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1871 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1872 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1873 1874 if (rc) { 1875 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1876 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1877 atomic_set(&channel->irq_pending, 0); 1878 wake_up(&card->wait_q); 1879 return rc; 1880 } 1881 rc = wait_event_interruptible_timeout(card->wait_q, 1882 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1883 if (rc == -ERESTARTSYS) 1884 return rc; 1885 if (channel->state != CH_STATE_UP) { 1886 rc = -ETIME; 1887 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1888 } else 1889 rc = 0; 1890 return rc; 1891 } 1892 1893 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1894 void (*idx_reply_cb)(struct qeth_channel *, 1895 struct qeth_cmd_buffer *)) 1896 { 1897 struct qeth_card *card; 1898 struct qeth_cmd_buffer *iob; 1899 unsigned long flags; 1900 __u16 temp; 1901 __u8 tmp; 1902 int rc; 1903 struct ccw_dev_id temp_devid; 1904 1905 card = CARD_FROM_CDEV(channel->ccwdev); 1906 1907 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1908 1909 iob = qeth_get_buffer(channel); 1910 if (!iob) 1911 return -ENOMEM; 1912 iob->callback = idx_reply_cb; 1913 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1914 channel->ccw.count = IDX_ACTIVATE_SIZE; 1915 channel->ccw.cda = (__u32) __pa(iob->data); 1916 if (channel == &card->write) { 1917 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1918 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1919 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1920 card->seqno.trans_hdr++; 1921 } else { 1922 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1923 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1924 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1925 } 1926 tmp = ((__u8)card->info.portno) | 0x80; 1927 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1928 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1929 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1930 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1931 &card->info.func_level, sizeof(__u16)); 1932 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1933 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1934 temp = (card->info.cula << 8) + card->info.unit_addr2; 1935 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1936 1937 wait_event(card->wait_q, 1938 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1939 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1940 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1941 rc = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1942 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1943 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1944 1945 if (rc) { 1946 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1947 rc); 1948 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1949 atomic_set(&channel->irq_pending, 0); 1950 wake_up(&card->wait_q); 1951 return rc; 1952 } 1953 rc = wait_event_interruptible_timeout(card->wait_q, 1954 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1955 if (rc == -ERESTARTSYS) 1956 return rc; 1957 if (channel->state != CH_STATE_ACTIVATING) { 1958 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1959 " failed to recover an error on the device\n"); 1960 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1961 dev_name(&channel->ccwdev->dev)); 1962 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1963 return -ETIME; 1964 } 1965 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1966 } 1967 1968 static int qeth_peer_func_level(int level) 1969 { 1970 if ((level & 0xff) == 8) 1971 return (level & 0xff) + 0x400; 1972 if (((level >> 8) & 3) == 1) 1973 return (level & 0xff) + 0x200; 1974 return level; 1975 } 1976 1977 static void qeth_idx_write_cb(struct qeth_channel *channel, 1978 struct qeth_cmd_buffer *iob) 1979 { 1980 struct qeth_card *card; 1981 __u16 temp; 1982 1983 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1984 1985 if (channel->state == CH_STATE_DOWN) { 1986 channel->state = CH_STATE_ACTIVATING; 1987 goto out; 1988 } 1989 card = CARD_FROM_CDEV(channel->ccwdev); 1990 1991 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1992 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1993 dev_err(&card->write.ccwdev->dev, 1994 "The adapter is used exclusively by another " 1995 "host\n"); 1996 else 1997 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1998 " negative reply\n", 1999 dev_name(&card->write.ccwdev->dev)); 2000 goto out; 2001 } 2002 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2003 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 2004 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 2005 "function level mismatch (sent: 0x%x, received: " 2006 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 2007 card->info.func_level, temp); 2008 goto out; 2009 } 2010 channel->state = CH_STATE_UP; 2011 out: 2012 qeth_release_buffer(channel, iob); 2013 } 2014 2015 static void qeth_idx_read_cb(struct qeth_channel *channel, 2016 struct qeth_cmd_buffer *iob) 2017 { 2018 struct qeth_card *card; 2019 __u16 temp; 2020 2021 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 2022 if (channel->state == CH_STATE_DOWN) { 2023 channel->state = CH_STATE_ACTIVATING; 2024 goto out; 2025 } 2026 2027 card = CARD_FROM_CDEV(channel->ccwdev); 2028 if (qeth_check_idx_response(card, iob->data)) 2029 goto out; 2030 2031 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 2032 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 2033 case QETH_IDX_ACT_ERR_EXCL: 2034 dev_err(&card->write.ccwdev->dev, 2035 "The adapter is used exclusively by another " 2036 "host\n"); 2037 break; 2038 case QETH_IDX_ACT_ERR_AUTH: 2039 case QETH_IDX_ACT_ERR_AUTH_USER: 2040 dev_err(&card->read.ccwdev->dev, 2041 "Setting the device online failed because of " 2042 "insufficient authorization\n"); 2043 break; 2044 default: 2045 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 2046 " negative reply\n", 2047 dev_name(&card->read.ccwdev->dev)); 2048 } 2049 QETH_CARD_TEXT_(card, 2, "idxread%c", 2050 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 2051 goto out; 2052 } 2053 2054 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2055 if (temp != qeth_peer_func_level(card->info.func_level)) { 2056 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 2057 "level mismatch (sent: 0x%x, received: 0x%x)\n", 2058 dev_name(&card->read.ccwdev->dev), 2059 card->info.func_level, temp); 2060 goto out; 2061 } 2062 memcpy(&card->token.issuer_rm_r, 2063 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2064 QETH_MPC_TOKEN_LENGTH); 2065 memcpy(&card->info.mcl_level[0], 2066 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2067 channel->state = CH_STATE_UP; 2068 out: 2069 qeth_release_buffer(channel, iob); 2070 } 2071 2072 void qeth_prepare_control_data(struct qeth_card *card, int len, 2073 struct qeth_cmd_buffer *iob) 2074 { 2075 qeth_setup_ccw(&card->write, iob->data, len); 2076 iob->callback = qeth_release_buffer; 2077 2078 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2079 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2080 card->seqno.trans_hdr++; 2081 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2082 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2083 card->seqno.pdu_hdr++; 2084 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2085 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2086 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2087 } 2088 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2089 2090 /** 2091 * qeth_send_control_data() - send control command to the card 2092 * @card: qeth_card structure pointer 2093 * @len: size of the command buffer 2094 * @iob: qeth_cmd_buffer pointer 2095 * @reply_cb: callback function pointer 2096 * @cb_card: pointer to the qeth_card structure 2097 * @cb_reply: pointer to the qeth_reply structure 2098 * @cb_cmd: pointer to the original iob for non-IPA 2099 * commands, or to the qeth_ipa_cmd structure 2100 * for the IPA commands. 2101 * @reply_param: private pointer passed to the callback 2102 * 2103 * Returns the value of the `return_code' field of the response 2104 * block returned from the hardware, or other error indication. 2105 * Value of zero indicates successful execution of the command. 2106 * 2107 * Callback function gets called one or more times, with cb_cmd 2108 * pointing to the response returned by the hardware. Callback 2109 * function must return non-zero if more reply blocks are expected, 2110 * and zero if the last or only reply block is received. Callback 2111 * function can get the value of the reply_param pointer from the 2112 * field 'param' of the structure qeth_reply. 2113 */ 2114 2115 int qeth_send_control_data(struct qeth_card *card, int len, 2116 struct qeth_cmd_buffer *iob, 2117 int (*reply_cb)(struct qeth_card *cb_card, 2118 struct qeth_reply *cb_reply, 2119 unsigned long cb_cmd), 2120 void *reply_param) 2121 { 2122 int rc; 2123 unsigned long flags; 2124 struct qeth_reply *reply = NULL; 2125 unsigned long timeout, event_timeout; 2126 struct qeth_ipa_cmd *cmd = NULL; 2127 2128 QETH_CARD_TEXT(card, 2, "sendctl"); 2129 2130 if (card->read_or_write_problem) { 2131 qeth_release_buffer(iob->channel, iob); 2132 return -EIO; 2133 } 2134 reply = qeth_alloc_reply(card); 2135 if (!reply) { 2136 return -ENOMEM; 2137 } 2138 reply->callback = reply_cb; 2139 reply->param = reply_param; 2140 2141 init_waitqueue_head(&reply->wait_q); 2142 2143 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2144 2145 if (IS_IPA(iob->data)) { 2146 cmd = __ipa_cmd(iob); 2147 cmd->hdr.seqno = card->seqno.ipa++; 2148 reply->seqno = cmd->hdr.seqno; 2149 event_timeout = QETH_IPA_TIMEOUT; 2150 } else { 2151 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2152 event_timeout = QETH_TIMEOUT; 2153 } 2154 qeth_prepare_control_data(card, len, iob); 2155 2156 spin_lock_irqsave(&card->lock, flags); 2157 list_add_tail(&reply->list, &card->cmd_waiter_list); 2158 spin_unlock_irqrestore(&card->lock, flags); 2159 2160 timeout = jiffies + event_timeout; 2161 2162 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2163 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2164 rc = ccw_device_start_timeout(CARD_WDEV(card), &card->write.ccw, 2165 (addr_t) iob, 0, 0, event_timeout); 2166 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2167 if (rc) { 2168 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2169 "ccw_device_start rc = %i\n", 2170 dev_name(&card->write.ccwdev->dev), rc); 2171 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2172 spin_lock_irqsave(&card->lock, flags); 2173 list_del_init(&reply->list); 2174 qeth_put_reply(reply); 2175 spin_unlock_irqrestore(&card->lock, flags); 2176 qeth_release_buffer(iob->channel, iob); 2177 atomic_set(&card->write.irq_pending, 0); 2178 wake_up(&card->wait_q); 2179 return rc; 2180 } 2181 2182 /* we have only one long running ipassist, since we can ensure 2183 process context of this command we can sleep */ 2184 if (cmd && cmd->hdr.command == IPA_CMD_SETIP && 2185 cmd->hdr.prot_version == QETH_PROT_IPV4) { 2186 if (!wait_event_timeout(reply->wait_q, 2187 atomic_read(&reply->received), event_timeout)) 2188 goto time_err; 2189 } else { 2190 while (!atomic_read(&reply->received)) { 2191 if (time_after(jiffies, timeout)) 2192 goto time_err; 2193 cpu_relax(); 2194 } 2195 } 2196 2197 rc = reply->rc; 2198 qeth_put_reply(reply); 2199 return rc; 2200 2201 time_err: 2202 reply->rc = -ETIME; 2203 spin_lock_irqsave(&reply->card->lock, flags); 2204 list_del_init(&reply->list); 2205 spin_unlock_irqrestore(&reply->card->lock, flags); 2206 atomic_inc(&reply->received); 2207 rc = reply->rc; 2208 qeth_put_reply(reply); 2209 return rc; 2210 } 2211 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2212 2213 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2214 unsigned long data) 2215 { 2216 struct qeth_cmd_buffer *iob; 2217 2218 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2219 2220 iob = (struct qeth_cmd_buffer *) data; 2221 memcpy(&card->token.cm_filter_r, 2222 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2223 QETH_MPC_TOKEN_LENGTH); 2224 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2225 return 0; 2226 } 2227 2228 static int qeth_cm_enable(struct qeth_card *card) 2229 { 2230 int rc; 2231 struct qeth_cmd_buffer *iob; 2232 2233 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2234 2235 iob = qeth_wait_for_buffer(&card->write); 2236 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2237 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2238 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2239 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2240 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2241 2242 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2243 qeth_cm_enable_cb, NULL); 2244 return rc; 2245 } 2246 2247 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2248 unsigned long data) 2249 { 2250 2251 struct qeth_cmd_buffer *iob; 2252 2253 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2254 2255 iob = (struct qeth_cmd_buffer *) data; 2256 memcpy(&card->token.cm_connection_r, 2257 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2258 QETH_MPC_TOKEN_LENGTH); 2259 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2260 return 0; 2261 } 2262 2263 static int qeth_cm_setup(struct qeth_card *card) 2264 { 2265 int rc; 2266 struct qeth_cmd_buffer *iob; 2267 2268 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2269 2270 iob = qeth_wait_for_buffer(&card->write); 2271 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2272 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2273 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2274 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2275 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2276 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2277 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2278 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2279 qeth_cm_setup_cb, NULL); 2280 return rc; 2281 2282 } 2283 2284 static int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2285 { 2286 switch (card->info.type) { 2287 case QETH_CARD_TYPE_IQD: 2288 return card->info.max_mtu; 2289 case QETH_CARD_TYPE_OSD: 2290 case QETH_CARD_TYPE_OSX: 2291 if (!card->options.layer2) 2292 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */ 2293 /* fall through */ 2294 default: 2295 return ETH_DATA_LEN; 2296 } 2297 } 2298 2299 static int qeth_get_mtu_outof_framesize(int framesize) 2300 { 2301 switch (framesize) { 2302 case 0x4000: 2303 return 8192; 2304 case 0x6000: 2305 return 16384; 2306 case 0xa000: 2307 return 32768; 2308 case 0xffff: 2309 return 57344; 2310 default: 2311 return 0; 2312 } 2313 } 2314 2315 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2316 { 2317 switch (card->info.type) { 2318 case QETH_CARD_TYPE_OSD: 2319 case QETH_CARD_TYPE_OSM: 2320 case QETH_CARD_TYPE_OSX: 2321 case QETH_CARD_TYPE_IQD: 2322 return ((mtu >= 576) && 2323 (mtu <= card->info.max_mtu)); 2324 case QETH_CARD_TYPE_OSN: 2325 default: 2326 return 1; 2327 } 2328 } 2329 2330 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2331 unsigned long data) 2332 { 2333 2334 __u16 mtu, framesize; 2335 __u16 len; 2336 __u8 link_type; 2337 struct qeth_cmd_buffer *iob; 2338 2339 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2340 2341 iob = (struct qeth_cmd_buffer *) data; 2342 memcpy(&card->token.ulp_filter_r, 2343 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2344 QETH_MPC_TOKEN_LENGTH); 2345 if (card->info.type == QETH_CARD_TYPE_IQD) { 2346 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2347 mtu = qeth_get_mtu_outof_framesize(framesize); 2348 if (!mtu) { 2349 iob->rc = -EINVAL; 2350 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2351 return 0; 2352 } 2353 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2354 /* frame size has changed */ 2355 if (card->dev && 2356 ((card->dev->mtu == card->info.initial_mtu) || 2357 (card->dev->mtu > mtu))) 2358 card->dev->mtu = mtu; 2359 qeth_free_qdio_buffers(card); 2360 } 2361 card->info.initial_mtu = mtu; 2362 card->info.max_mtu = mtu; 2363 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2364 } else { 2365 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2366 iob->data); 2367 card->info.initial_mtu = min(card->info.max_mtu, 2368 qeth_get_initial_mtu_for_card(card)); 2369 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2370 } 2371 2372 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2373 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2374 memcpy(&link_type, 2375 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2376 card->info.link_type = link_type; 2377 } else 2378 card->info.link_type = 0; 2379 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2380 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2381 return 0; 2382 } 2383 2384 static int qeth_ulp_enable(struct qeth_card *card) 2385 { 2386 int rc; 2387 char prot_type; 2388 struct qeth_cmd_buffer *iob; 2389 2390 /*FIXME: trace view callbacks*/ 2391 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2392 2393 iob = qeth_wait_for_buffer(&card->write); 2394 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2395 2396 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2397 (__u8) card->info.portno; 2398 if (card->options.layer2) 2399 if (card->info.type == QETH_CARD_TYPE_OSN) 2400 prot_type = QETH_PROT_OSN2; 2401 else 2402 prot_type = QETH_PROT_LAYER2; 2403 else 2404 prot_type = QETH_PROT_TCPIP; 2405 2406 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2407 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2408 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2409 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2410 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2411 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2412 qeth_ulp_enable_cb, NULL); 2413 return rc; 2414 2415 } 2416 2417 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2418 unsigned long data) 2419 { 2420 struct qeth_cmd_buffer *iob; 2421 2422 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2423 2424 iob = (struct qeth_cmd_buffer *) data; 2425 memcpy(&card->token.ulp_connection_r, 2426 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2427 QETH_MPC_TOKEN_LENGTH); 2428 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2429 3)) { 2430 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2431 dev_err(&card->gdev->dev, "A connection could not be " 2432 "established because of an OLM limit\n"); 2433 iob->rc = -EMLINK; 2434 } 2435 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2436 return 0; 2437 } 2438 2439 static int qeth_ulp_setup(struct qeth_card *card) 2440 { 2441 int rc; 2442 __u16 temp; 2443 struct qeth_cmd_buffer *iob; 2444 struct ccw_dev_id dev_id; 2445 2446 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2447 2448 iob = qeth_wait_for_buffer(&card->write); 2449 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2450 2451 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2452 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2453 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2454 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2455 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2456 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2457 2458 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2459 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2460 temp = (card->info.cula << 8) + card->info.unit_addr2; 2461 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2462 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2463 qeth_ulp_setup_cb, NULL); 2464 return rc; 2465 } 2466 2467 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2468 { 2469 int rc; 2470 struct qeth_qdio_out_buffer *newbuf; 2471 2472 rc = 0; 2473 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2474 if (!newbuf) { 2475 rc = -ENOMEM; 2476 goto out; 2477 } 2478 newbuf->buffer = q->qdio_bufs[bidx]; 2479 skb_queue_head_init(&newbuf->skb_list); 2480 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2481 newbuf->q = q; 2482 newbuf->aob = NULL; 2483 newbuf->next_pending = q->bufs[bidx]; 2484 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2485 q->bufs[bidx] = newbuf; 2486 if (q->bufstates) { 2487 q->bufstates[bidx].user = newbuf; 2488 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2489 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2490 QETH_CARD_TEXT_(q->card, 2, "%lx", 2491 (long) newbuf->next_pending); 2492 } 2493 out: 2494 return rc; 2495 } 2496 2497 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2498 { 2499 if (!q) 2500 return; 2501 2502 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2503 kfree(q); 2504 } 2505 2506 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2507 { 2508 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2509 2510 if (!q) 2511 return NULL; 2512 2513 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2514 kfree(q); 2515 return NULL; 2516 } 2517 return q; 2518 } 2519 2520 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2521 { 2522 int i, j; 2523 2524 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2525 2526 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2527 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2528 return 0; 2529 2530 QETH_DBF_TEXT(SETUP, 2, "inq"); 2531 card->qdio.in_q = qeth_alloc_qdio_queue(); 2532 if (!card->qdio.in_q) 2533 goto out_nomem; 2534 2535 /* inbound buffer pool */ 2536 if (qeth_alloc_buffer_pool(card)) 2537 goto out_freeinq; 2538 2539 /* outbound */ 2540 card->qdio.out_qs = 2541 kzalloc(card->qdio.no_out_queues * 2542 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2543 if (!card->qdio.out_qs) 2544 goto out_freepool; 2545 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2546 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2547 if (!card->qdio.out_qs[i]) 2548 goto out_freeoutq; 2549 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2550 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2551 card->qdio.out_qs[i]->queue_no = i; 2552 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2553 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2554 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2555 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2556 goto out_freeoutqbufs; 2557 } 2558 } 2559 2560 /* completion */ 2561 if (qeth_alloc_cq(card)) 2562 goto out_freeoutq; 2563 2564 return 0; 2565 2566 out_freeoutqbufs: 2567 while (j > 0) { 2568 --j; 2569 kmem_cache_free(qeth_qdio_outbuf_cache, 2570 card->qdio.out_qs[i]->bufs[j]); 2571 card->qdio.out_qs[i]->bufs[j] = NULL; 2572 } 2573 out_freeoutq: 2574 while (i > 0) { 2575 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2576 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2577 } 2578 kfree(card->qdio.out_qs); 2579 card->qdio.out_qs = NULL; 2580 out_freepool: 2581 qeth_free_buffer_pool(card); 2582 out_freeinq: 2583 qeth_free_qdio_queue(card->qdio.in_q); 2584 card->qdio.in_q = NULL; 2585 out_nomem: 2586 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2587 return -ENOMEM; 2588 } 2589 2590 static void qeth_free_qdio_buffers(struct qeth_card *card) 2591 { 2592 int i, j; 2593 2594 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2595 QETH_QDIO_UNINITIALIZED) 2596 return; 2597 2598 qeth_free_cq(card); 2599 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2600 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2601 if (card->qdio.in_q->bufs[j].rx_skb) 2602 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2603 } 2604 qeth_free_qdio_queue(card->qdio.in_q); 2605 card->qdio.in_q = NULL; 2606 /* inbound buffer pool */ 2607 qeth_free_buffer_pool(card); 2608 /* free outbound qdio_qs */ 2609 if (card->qdio.out_qs) { 2610 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2611 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2612 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2613 } 2614 kfree(card->qdio.out_qs); 2615 card->qdio.out_qs = NULL; 2616 } 2617 } 2618 2619 static void qeth_create_qib_param_field(struct qeth_card *card, 2620 char *param_field) 2621 { 2622 2623 param_field[0] = _ascebc['P']; 2624 param_field[1] = _ascebc['C']; 2625 param_field[2] = _ascebc['I']; 2626 param_field[3] = _ascebc['T']; 2627 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2628 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2629 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2630 } 2631 2632 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2633 char *param_field) 2634 { 2635 param_field[16] = _ascebc['B']; 2636 param_field[17] = _ascebc['L']; 2637 param_field[18] = _ascebc['K']; 2638 param_field[19] = _ascebc['T']; 2639 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2640 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2641 *((unsigned int *) (¶m_field[28])) = 2642 card->info.blkt.inter_packet_jumbo; 2643 } 2644 2645 static int qeth_qdio_activate(struct qeth_card *card) 2646 { 2647 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2648 return qdio_activate(CARD_DDEV(card)); 2649 } 2650 2651 static int qeth_dm_act(struct qeth_card *card) 2652 { 2653 int rc; 2654 struct qeth_cmd_buffer *iob; 2655 2656 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2657 2658 iob = qeth_wait_for_buffer(&card->write); 2659 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2660 2661 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2662 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2663 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2664 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2665 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2666 return rc; 2667 } 2668 2669 static int qeth_mpc_initialize(struct qeth_card *card) 2670 { 2671 int rc; 2672 2673 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2674 2675 rc = qeth_issue_next_read(card); 2676 if (rc) { 2677 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2678 return rc; 2679 } 2680 rc = qeth_cm_enable(card); 2681 if (rc) { 2682 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2683 goto out_qdio; 2684 } 2685 rc = qeth_cm_setup(card); 2686 if (rc) { 2687 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2688 goto out_qdio; 2689 } 2690 rc = qeth_ulp_enable(card); 2691 if (rc) { 2692 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2693 goto out_qdio; 2694 } 2695 rc = qeth_ulp_setup(card); 2696 if (rc) { 2697 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2698 goto out_qdio; 2699 } 2700 rc = qeth_alloc_qdio_buffers(card); 2701 if (rc) { 2702 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2703 goto out_qdio; 2704 } 2705 rc = qeth_qdio_establish(card); 2706 if (rc) { 2707 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2708 qeth_free_qdio_buffers(card); 2709 goto out_qdio; 2710 } 2711 rc = qeth_qdio_activate(card); 2712 if (rc) { 2713 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2714 goto out_qdio; 2715 } 2716 rc = qeth_dm_act(card); 2717 if (rc) { 2718 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2719 goto out_qdio; 2720 } 2721 2722 return 0; 2723 out_qdio: 2724 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2725 qdio_free(CARD_DDEV(card)); 2726 return rc; 2727 } 2728 2729 void qeth_print_status_message(struct qeth_card *card) 2730 { 2731 switch (card->info.type) { 2732 case QETH_CARD_TYPE_OSD: 2733 case QETH_CARD_TYPE_OSM: 2734 case QETH_CARD_TYPE_OSX: 2735 /* VM will use a non-zero first character 2736 * to indicate a HiperSockets like reporting 2737 * of the level OSA sets the first character to zero 2738 * */ 2739 if (!card->info.mcl_level[0]) { 2740 sprintf(card->info.mcl_level, "%02x%02x", 2741 card->info.mcl_level[2], 2742 card->info.mcl_level[3]); 2743 break; 2744 } 2745 /* fallthrough */ 2746 case QETH_CARD_TYPE_IQD: 2747 if ((card->info.guestlan) || 2748 (card->info.mcl_level[0] & 0x80)) { 2749 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2750 card->info.mcl_level[0]]; 2751 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2752 card->info.mcl_level[1]]; 2753 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2754 card->info.mcl_level[2]]; 2755 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2756 card->info.mcl_level[3]]; 2757 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2758 } 2759 break; 2760 default: 2761 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2762 } 2763 dev_info(&card->gdev->dev, 2764 "Device is a%s card%s%s%s\nwith link type %s.\n", 2765 qeth_get_cardname(card), 2766 (card->info.mcl_level[0]) ? " (level: " : "", 2767 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2768 (card->info.mcl_level[0]) ? ")" : "", 2769 qeth_get_cardname_short(card)); 2770 } 2771 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2772 2773 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2774 { 2775 struct qeth_buffer_pool_entry *entry; 2776 2777 QETH_CARD_TEXT(card, 5, "inwrklst"); 2778 2779 list_for_each_entry(entry, 2780 &card->qdio.init_pool.entry_list, init_list) { 2781 qeth_put_buffer_pool_entry(card, entry); 2782 } 2783 } 2784 2785 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2786 struct qeth_card *card) 2787 { 2788 struct list_head *plh; 2789 struct qeth_buffer_pool_entry *entry; 2790 int i, free; 2791 struct page *page; 2792 2793 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2794 return NULL; 2795 2796 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2797 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2798 free = 1; 2799 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2800 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2801 free = 0; 2802 break; 2803 } 2804 } 2805 if (free) { 2806 list_del_init(&entry->list); 2807 return entry; 2808 } 2809 } 2810 2811 /* no free buffer in pool so take first one and swap pages */ 2812 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2813 struct qeth_buffer_pool_entry, list); 2814 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2815 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2816 page = alloc_page(GFP_ATOMIC); 2817 if (!page) { 2818 return NULL; 2819 } else { 2820 free_page((unsigned long)entry->elements[i]); 2821 entry->elements[i] = page_address(page); 2822 if (card->options.performance_stats) 2823 card->perf_stats.sg_alloc_page_rx++; 2824 } 2825 } 2826 } 2827 list_del_init(&entry->list); 2828 return entry; 2829 } 2830 2831 static int qeth_init_input_buffer(struct qeth_card *card, 2832 struct qeth_qdio_buffer *buf) 2833 { 2834 struct qeth_buffer_pool_entry *pool_entry; 2835 int i; 2836 2837 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2838 buf->rx_skb = netdev_alloc_skb(card->dev, 2839 QETH_RX_PULL_LEN + ETH_HLEN); 2840 if (!buf->rx_skb) 2841 return 1; 2842 } 2843 2844 pool_entry = qeth_find_free_buffer_pool_entry(card); 2845 if (!pool_entry) 2846 return 1; 2847 2848 /* 2849 * since the buffer is accessed only from the input_tasklet 2850 * there shouldn't be a need to synchronize; also, since we use 2851 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2852 * buffers 2853 */ 2854 2855 buf->pool_entry = pool_entry; 2856 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2857 buf->buffer->element[i].length = PAGE_SIZE; 2858 buf->buffer->element[i].addr = pool_entry->elements[i]; 2859 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2860 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2861 else 2862 buf->buffer->element[i].eflags = 0; 2863 buf->buffer->element[i].sflags = 0; 2864 } 2865 return 0; 2866 } 2867 2868 int qeth_init_qdio_queues(struct qeth_card *card) 2869 { 2870 int i, j; 2871 int rc; 2872 2873 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2874 2875 /* inbound queue */ 2876 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2877 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2878 qeth_initialize_working_pool_list(card); 2879 /*give only as many buffers to hardware as we have buffer pool entries*/ 2880 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2881 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2882 card->qdio.in_q->next_buf_to_init = 2883 card->qdio.in_buf_pool.buf_count - 1; 2884 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2885 card->qdio.in_buf_pool.buf_count - 1); 2886 if (rc) { 2887 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2888 return rc; 2889 } 2890 2891 /* completion */ 2892 rc = qeth_cq_init(card); 2893 if (rc) { 2894 return rc; 2895 } 2896 2897 /* outbound queue */ 2898 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2899 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2900 QDIO_MAX_BUFFERS_PER_Q); 2901 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2902 qeth_clear_output_buffer(card->qdio.out_qs[i], 2903 card->qdio.out_qs[i]->bufs[j], 2904 QETH_QDIO_BUF_EMPTY); 2905 } 2906 card->qdio.out_qs[i]->card = card; 2907 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2908 card->qdio.out_qs[i]->do_pack = 0; 2909 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2910 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2911 atomic_set(&card->qdio.out_qs[i]->state, 2912 QETH_OUT_Q_UNLOCKED); 2913 } 2914 return 0; 2915 } 2916 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2917 2918 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2919 { 2920 switch (link_type) { 2921 case QETH_LINK_TYPE_HSTR: 2922 return 2; 2923 default: 2924 return 1; 2925 } 2926 } 2927 2928 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2929 struct qeth_ipa_cmd *cmd, __u8 command, 2930 enum qeth_prot_versions prot) 2931 { 2932 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2933 cmd->hdr.command = command; 2934 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2935 /* cmd->hdr.seqno is set by qeth_send_control_data() */ 2936 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2937 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2938 if (card->options.layer2) 2939 cmd->hdr.prim_version_no = 2; 2940 else 2941 cmd->hdr.prim_version_no = 1; 2942 cmd->hdr.param_count = 1; 2943 cmd->hdr.prot_version = prot; 2944 cmd->hdr.ipa_supported = 0; 2945 cmd->hdr.ipa_enabled = 0; 2946 } 2947 2948 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2949 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2950 { 2951 struct qeth_cmd_buffer *iob; 2952 2953 iob = qeth_get_buffer(&card->write); 2954 if (iob) { 2955 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot); 2956 } else { 2957 dev_warn(&card->gdev->dev, 2958 "The qeth driver ran out of channel command buffers\n"); 2959 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2960 dev_name(&card->gdev->dev)); 2961 } 2962 2963 return iob; 2964 } 2965 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2966 2967 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2968 char prot_type) 2969 { 2970 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2971 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2972 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2973 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2974 } 2975 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2976 2977 /** 2978 * qeth_send_ipa_cmd() - send an IPA command 2979 * 2980 * See qeth_send_control_data() for explanation of the arguments. 2981 */ 2982 2983 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2984 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2985 unsigned long), 2986 void *reply_param) 2987 { 2988 int rc; 2989 char prot_type; 2990 2991 QETH_CARD_TEXT(card, 4, "sendipa"); 2992 2993 if (card->options.layer2) 2994 if (card->info.type == QETH_CARD_TYPE_OSN) 2995 prot_type = QETH_PROT_OSN2; 2996 else 2997 prot_type = QETH_PROT_LAYER2; 2998 else 2999 prot_type = QETH_PROT_TCPIP; 3000 qeth_prepare_ipa_cmd(card, iob, prot_type); 3001 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 3002 iob, reply_cb, reply_param); 3003 if (rc == -ETIME) { 3004 qeth_clear_ipacmd_list(card); 3005 qeth_schedule_recovery(card); 3006 } 3007 return rc; 3008 } 3009 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 3010 3011 static int qeth_send_startlan(struct qeth_card *card) 3012 { 3013 int rc; 3014 struct qeth_cmd_buffer *iob; 3015 3016 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 3017 3018 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 3019 if (!iob) 3020 return -ENOMEM; 3021 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 3022 return rc; 3023 } 3024 3025 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 3026 { 3027 if (!cmd->hdr.return_code) 3028 cmd->hdr.return_code = 3029 cmd->data.setadapterparms.hdr.return_code; 3030 return cmd->hdr.return_code; 3031 } 3032 3033 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 3034 struct qeth_reply *reply, unsigned long data) 3035 { 3036 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3037 3038 QETH_CARD_TEXT(card, 3, "quyadpcb"); 3039 if (qeth_setadpparms_inspect_rc(cmd)) 3040 return 0; 3041 3042 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 3043 card->info.link_type = 3044 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 3045 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 3046 } 3047 card->options.adp.supported_funcs = 3048 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 3049 return 0; 3050 } 3051 3052 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 3053 __u32 command, __u32 cmdlen) 3054 { 3055 struct qeth_cmd_buffer *iob; 3056 struct qeth_ipa_cmd *cmd; 3057 3058 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3059 QETH_PROT_IPV4); 3060 if (iob) { 3061 cmd = __ipa_cmd(iob); 3062 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3063 cmd->data.setadapterparms.hdr.command_code = command; 3064 cmd->data.setadapterparms.hdr.used_total = 1; 3065 cmd->data.setadapterparms.hdr.seq_no = 1; 3066 } 3067 3068 return iob; 3069 } 3070 3071 int qeth_query_setadapterparms(struct qeth_card *card) 3072 { 3073 int rc; 3074 struct qeth_cmd_buffer *iob; 3075 3076 QETH_CARD_TEXT(card, 3, "queryadp"); 3077 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3078 sizeof(struct qeth_ipacmd_setadpparms)); 3079 if (!iob) 3080 return -ENOMEM; 3081 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3082 return rc; 3083 } 3084 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3085 3086 static int qeth_query_ipassists_cb(struct qeth_card *card, 3087 struct qeth_reply *reply, unsigned long data) 3088 { 3089 struct qeth_ipa_cmd *cmd; 3090 3091 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3092 3093 cmd = (struct qeth_ipa_cmd *) data; 3094 3095 switch (cmd->hdr.return_code) { 3096 case IPA_RC_NOTSUPP: 3097 case IPA_RC_L2_UNSUPPORTED_CMD: 3098 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3099 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3100 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3101 return -0; 3102 default: 3103 if (cmd->hdr.return_code) { 3104 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3105 "rc=%d\n", 3106 dev_name(&card->gdev->dev), 3107 cmd->hdr.return_code); 3108 return 0; 3109 } 3110 } 3111 3112 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3113 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3114 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3115 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3116 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3117 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3118 } else 3119 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3120 "\n", dev_name(&card->gdev->dev)); 3121 return 0; 3122 } 3123 3124 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3125 { 3126 int rc; 3127 struct qeth_cmd_buffer *iob; 3128 3129 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3130 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3131 if (!iob) 3132 return -ENOMEM; 3133 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3134 return rc; 3135 } 3136 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3137 3138 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3139 struct qeth_reply *reply, unsigned long data) 3140 { 3141 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3142 struct qeth_query_switch_attributes *attrs; 3143 struct qeth_switch_info *sw_info; 3144 3145 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3146 if (qeth_setadpparms_inspect_rc(cmd)) 3147 return 0; 3148 3149 sw_info = (struct qeth_switch_info *)reply->param; 3150 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3151 sw_info->capabilities = attrs->capabilities; 3152 sw_info->settings = attrs->settings; 3153 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3154 sw_info->settings); 3155 return 0; 3156 } 3157 3158 int qeth_query_switch_attributes(struct qeth_card *card, 3159 struct qeth_switch_info *sw_info) 3160 { 3161 struct qeth_cmd_buffer *iob; 3162 3163 QETH_CARD_TEXT(card, 2, "qswiattr"); 3164 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3165 return -EOPNOTSUPP; 3166 if (!netif_carrier_ok(card->dev)) 3167 return -ENOMEDIUM; 3168 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3169 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3170 if (!iob) 3171 return -ENOMEM; 3172 return qeth_send_ipa_cmd(card, iob, 3173 qeth_query_switch_attributes_cb, sw_info); 3174 } 3175 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3176 3177 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3178 struct qeth_reply *reply, unsigned long data) 3179 { 3180 struct qeth_ipa_cmd *cmd; 3181 __u16 rc; 3182 3183 cmd = (struct qeth_ipa_cmd *)data; 3184 rc = cmd->hdr.return_code; 3185 if (rc) 3186 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3187 else 3188 card->info.diagass_support = cmd->data.diagass.ext; 3189 return 0; 3190 } 3191 3192 static int qeth_query_setdiagass(struct qeth_card *card) 3193 { 3194 struct qeth_cmd_buffer *iob; 3195 struct qeth_ipa_cmd *cmd; 3196 3197 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3198 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3199 if (!iob) 3200 return -ENOMEM; 3201 cmd = __ipa_cmd(iob); 3202 cmd->data.diagass.subcmd_len = 16; 3203 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3204 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3205 } 3206 3207 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3208 { 3209 unsigned long info = get_zeroed_page(GFP_KERNEL); 3210 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3211 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3212 struct ccw_dev_id ccwid; 3213 int level; 3214 3215 tid->chpid = card->info.chpid; 3216 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3217 tid->ssid = ccwid.ssid; 3218 tid->devno = ccwid.devno; 3219 if (!info) 3220 return; 3221 level = stsi(NULL, 0, 0, 0); 3222 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3223 tid->lparnr = info222->lpar_number; 3224 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3225 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3226 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3227 } 3228 free_page(info); 3229 return; 3230 } 3231 3232 static int qeth_hw_trap_cb(struct qeth_card *card, 3233 struct qeth_reply *reply, unsigned long data) 3234 { 3235 struct qeth_ipa_cmd *cmd; 3236 __u16 rc; 3237 3238 cmd = (struct qeth_ipa_cmd *)data; 3239 rc = cmd->hdr.return_code; 3240 if (rc) 3241 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3242 return 0; 3243 } 3244 3245 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3246 { 3247 struct qeth_cmd_buffer *iob; 3248 struct qeth_ipa_cmd *cmd; 3249 3250 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3251 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3252 if (!iob) 3253 return -ENOMEM; 3254 cmd = __ipa_cmd(iob); 3255 cmd->data.diagass.subcmd_len = 80; 3256 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3257 cmd->data.diagass.type = 1; 3258 cmd->data.diagass.action = action; 3259 switch (action) { 3260 case QETH_DIAGS_TRAP_ARM: 3261 cmd->data.diagass.options = 0x0003; 3262 cmd->data.diagass.ext = 0x00010000 + 3263 sizeof(struct qeth_trap_id); 3264 qeth_get_trap_id(card, 3265 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3266 break; 3267 case QETH_DIAGS_TRAP_DISARM: 3268 cmd->data.diagass.options = 0x0001; 3269 break; 3270 case QETH_DIAGS_TRAP_CAPTURE: 3271 break; 3272 } 3273 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3274 } 3275 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3276 3277 static int qeth_check_qdio_errors(struct qeth_card *card, 3278 struct qdio_buffer *buf, 3279 unsigned int qdio_error, 3280 const char *dbftext) 3281 { 3282 if (qdio_error) { 3283 QETH_CARD_TEXT(card, 2, dbftext); 3284 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3285 buf->element[15].sflags); 3286 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3287 buf->element[14].sflags); 3288 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3289 if ((buf->element[15].sflags) == 0x12) { 3290 card->stats.rx_dropped++; 3291 return 0; 3292 } else 3293 return 1; 3294 } 3295 return 0; 3296 } 3297 3298 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3299 { 3300 struct qeth_qdio_q *queue = card->qdio.in_q; 3301 struct list_head *lh; 3302 int count; 3303 int i; 3304 int rc; 3305 int newcount = 0; 3306 3307 count = (index < queue->next_buf_to_init)? 3308 card->qdio.in_buf_pool.buf_count - 3309 (queue->next_buf_to_init - index) : 3310 card->qdio.in_buf_pool.buf_count - 3311 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3312 /* only requeue at a certain threshold to avoid SIGAs */ 3313 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3314 for (i = queue->next_buf_to_init; 3315 i < queue->next_buf_to_init + count; ++i) { 3316 if (qeth_init_input_buffer(card, 3317 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3318 break; 3319 } else { 3320 newcount++; 3321 } 3322 } 3323 3324 if (newcount < count) { 3325 /* we are in memory shortage so we switch back to 3326 traditional skb allocation and drop packages */ 3327 atomic_set(&card->force_alloc_skb, 3); 3328 count = newcount; 3329 } else { 3330 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3331 } 3332 3333 if (!count) { 3334 i = 0; 3335 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3336 i++; 3337 if (i == card->qdio.in_buf_pool.buf_count) { 3338 QETH_CARD_TEXT(card, 2, "qsarbw"); 3339 card->reclaim_index = index; 3340 schedule_delayed_work( 3341 &card->buffer_reclaim_work, 3342 QETH_RECLAIM_WORK_TIME); 3343 } 3344 return; 3345 } 3346 3347 /* 3348 * according to old code it should be avoided to requeue all 3349 * 128 buffers in order to benefit from PCI avoidance. 3350 * this function keeps at least one buffer (the buffer at 3351 * 'index') un-requeued -> this buffer is the first buffer that 3352 * will be requeued the next time 3353 */ 3354 if (card->options.performance_stats) { 3355 card->perf_stats.inbound_do_qdio_cnt++; 3356 card->perf_stats.inbound_do_qdio_start_time = 3357 qeth_get_micros(); 3358 } 3359 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3360 queue->next_buf_to_init, count); 3361 if (card->options.performance_stats) 3362 card->perf_stats.inbound_do_qdio_time += 3363 qeth_get_micros() - 3364 card->perf_stats.inbound_do_qdio_start_time; 3365 if (rc) { 3366 QETH_CARD_TEXT(card, 2, "qinberr"); 3367 } 3368 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3369 QDIO_MAX_BUFFERS_PER_Q; 3370 } 3371 } 3372 3373 static void qeth_buffer_reclaim_work(struct work_struct *work) 3374 { 3375 struct qeth_card *card = container_of(work, struct qeth_card, 3376 buffer_reclaim_work.work); 3377 3378 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3379 qeth_queue_input_buffer(card, card->reclaim_index); 3380 } 3381 3382 static void qeth_handle_send_error(struct qeth_card *card, 3383 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3384 { 3385 int sbalf15 = buffer->buffer->element[15].sflags; 3386 3387 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3388 if (card->info.type == QETH_CARD_TYPE_IQD) { 3389 if (sbalf15 == 0) { 3390 qdio_err = 0; 3391 } else { 3392 qdio_err = 1; 3393 } 3394 } 3395 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3396 3397 if (!qdio_err) 3398 return; 3399 3400 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3401 return; 3402 3403 QETH_CARD_TEXT(card, 1, "lnkfail"); 3404 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3405 (u16)qdio_err, (u8)sbalf15); 3406 } 3407 3408 /** 3409 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3410 * @queue: queue to check for packing buffer 3411 * 3412 * Returns number of buffers that were prepared for flush. 3413 */ 3414 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3415 { 3416 struct qeth_qdio_out_buffer *buffer; 3417 3418 buffer = queue->bufs[queue->next_buf_to_fill]; 3419 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3420 (buffer->next_element_to_fill > 0)) { 3421 /* it's a packing buffer */ 3422 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3423 queue->next_buf_to_fill = 3424 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3425 return 1; 3426 } 3427 return 0; 3428 } 3429 3430 /* 3431 * Switched to packing state if the number of used buffers on a queue 3432 * reaches a certain limit. 3433 */ 3434 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3435 { 3436 if (!queue->do_pack) { 3437 if (atomic_read(&queue->used_buffers) 3438 >= QETH_HIGH_WATERMARK_PACK){ 3439 /* switch non-PACKING -> PACKING */ 3440 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3441 if (queue->card->options.performance_stats) 3442 queue->card->perf_stats.sc_dp_p++; 3443 queue->do_pack = 1; 3444 } 3445 } 3446 } 3447 3448 /* 3449 * Switches from packing to non-packing mode. If there is a packing 3450 * buffer on the queue this buffer will be prepared to be flushed. 3451 * In that case 1 is returned to inform the caller. If no buffer 3452 * has to be flushed, zero is returned. 3453 */ 3454 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3455 { 3456 if (queue->do_pack) { 3457 if (atomic_read(&queue->used_buffers) 3458 <= QETH_LOW_WATERMARK_PACK) { 3459 /* switch PACKING -> non-PACKING */ 3460 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3461 if (queue->card->options.performance_stats) 3462 queue->card->perf_stats.sc_p_dp++; 3463 queue->do_pack = 0; 3464 return qeth_prep_flush_pack_buffer(queue); 3465 } 3466 } 3467 return 0; 3468 } 3469 3470 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3471 int count) 3472 { 3473 struct qeth_qdio_out_buffer *buf; 3474 int rc; 3475 int i; 3476 unsigned int qdio_flags; 3477 3478 for (i = index; i < index + count; ++i) { 3479 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3480 buf = queue->bufs[bidx]; 3481 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3482 SBAL_EFLAGS_LAST_ENTRY; 3483 3484 if (queue->bufstates) 3485 queue->bufstates[bidx].user = buf; 3486 3487 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3488 continue; 3489 3490 if (!queue->do_pack) { 3491 if ((atomic_read(&queue->used_buffers) >= 3492 (QETH_HIGH_WATERMARK_PACK - 3493 QETH_WATERMARK_PACK_FUZZ)) && 3494 !atomic_read(&queue->set_pci_flags_count)) { 3495 /* it's likely that we'll go to packing 3496 * mode soon */ 3497 atomic_inc(&queue->set_pci_flags_count); 3498 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3499 } 3500 } else { 3501 if (!atomic_read(&queue->set_pci_flags_count)) { 3502 /* 3503 * there's no outstanding PCI any more, so we 3504 * have to request a PCI to be sure the the PCI 3505 * will wake at some time in the future then we 3506 * can flush packed buffers that might still be 3507 * hanging around, which can happen if no 3508 * further send was requested by the stack 3509 */ 3510 atomic_inc(&queue->set_pci_flags_count); 3511 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3512 } 3513 } 3514 } 3515 3516 netif_trans_update(queue->card->dev); 3517 if (queue->card->options.performance_stats) { 3518 queue->card->perf_stats.outbound_do_qdio_cnt++; 3519 queue->card->perf_stats.outbound_do_qdio_start_time = 3520 qeth_get_micros(); 3521 } 3522 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3523 if (atomic_read(&queue->set_pci_flags_count)) 3524 qdio_flags |= QDIO_FLAG_PCI_OUT; 3525 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3526 queue->queue_no, index, count); 3527 if (queue->card->options.performance_stats) 3528 queue->card->perf_stats.outbound_do_qdio_time += 3529 qeth_get_micros() - 3530 queue->card->perf_stats.outbound_do_qdio_start_time; 3531 atomic_add(count, &queue->used_buffers); 3532 if (rc) { 3533 queue->card->stats.tx_errors += count; 3534 /* ignore temporary SIGA errors without busy condition */ 3535 if (rc == -ENOBUFS) 3536 return; 3537 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3538 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3539 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3540 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3541 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3542 3543 /* this must not happen under normal circumstances. if it 3544 * happens something is really wrong -> recover */ 3545 qeth_schedule_recovery(queue->card); 3546 return; 3547 } 3548 if (queue->card->options.performance_stats) 3549 queue->card->perf_stats.bufs_sent += count; 3550 } 3551 3552 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3553 { 3554 int index; 3555 int flush_cnt = 0; 3556 int q_was_packing = 0; 3557 3558 /* 3559 * check if weed have to switch to non-packing mode or if 3560 * we have to get a pci flag out on the queue 3561 */ 3562 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3563 !atomic_read(&queue->set_pci_flags_count)) { 3564 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3565 QETH_OUT_Q_UNLOCKED) { 3566 /* 3567 * If we get in here, there was no action in 3568 * do_send_packet. So, we check if there is a 3569 * packing buffer to be flushed here. 3570 */ 3571 netif_stop_queue(queue->card->dev); 3572 index = queue->next_buf_to_fill; 3573 q_was_packing = queue->do_pack; 3574 /* queue->do_pack may change */ 3575 barrier(); 3576 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3577 if (!flush_cnt && 3578 !atomic_read(&queue->set_pci_flags_count)) 3579 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3580 if (queue->card->options.performance_stats && 3581 q_was_packing) 3582 queue->card->perf_stats.bufs_sent_pack += 3583 flush_cnt; 3584 if (flush_cnt) 3585 qeth_flush_buffers(queue, index, flush_cnt); 3586 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3587 } 3588 } 3589 } 3590 3591 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3592 unsigned long card_ptr) 3593 { 3594 struct qeth_card *card = (struct qeth_card *)card_ptr; 3595 3596 if (card->dev && (card->dev->flags & IFF_UP)) 3597 napi_schedule(&card->napi); 3598 } 3599 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3600 3601 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3602 { 3603 int rc; 3604 3605 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3606 rc = -1; 3607 goto out; 3608 } else { 3609 if (card->options.cq == cq) { 3610 rc = 0; 3611 goto out; 3612 } 3613 3614 if (card->state != CARD_STATE_DOWN && 3615 card->state != CARD_STATE_RECOVER) { 3616 rc = -1; 3617 goto out; 3618 } 3619 3620 qeth_free_qdio_buffers(card); 3621 card->options.cq = cq; 3622 rc = 0; 3623 } 3624 out: 3625 return rc; 3626 3627 } 3628 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3629 3630 3631 static void qeth_qdio_cq_handler(struct qeth_card *card, 3632 unsigned int qdio_err, 3633 unsigned int queue, int first_element, int count) { 3634 struct qeth_qdio_q *cq = card->qdio.c_q; 3635 int i; 3636 int rc; 3637 3638 if (!qeth_is_cq(card, queue)) 3639 goto out; 3640 3641 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3642 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3643 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3644 3645 if (qdio_err) { 3646 netif_stop_queue(card->dev); 3647 qeth_schedule_recovery(card); 3648 goto out; 3649 } 3650 3651 if (card->options.performance_stats) { 3652 card->perf_stats.cq_cnt++; 3653 card->perf_stats.cq_start_time = qeth_get_micros(); 3654 } 3655 3656 for (i = first_element; i < first_element + count; ++i) { 3657 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3658 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3659 int e; 3660 3661 e = 0; 3662 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3663 buffer->element[e].addr) { 3664 unsigned long phys_aob_addr; 3665 3666 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3667 qeth_qdio_handle_aob(card, phys_aob_addr); 3668 buffer->element[e].addr = NULL; 3669 buffer->element[e].eflags = 0; 3670 buffer->element[e].sflags = 0; 3671 buffer->element[e].length = 0; 3672 3673 ++e; 3674 } 3675 3676 buffer->element[15].eflags = 0; 3677 buffer->element[15].sflags = 0; 3678 } 3679 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3680 card->qdio.c_q->next_buf_to_init, 3681 count); 3682 if (rc) { 3683 dev_warn(&card->gdev->dev, 3684 "QDIO reported an error, rc=%i\n", rc); 3685 QETH_CARD_TEXT(card, 2, "qcqherr"); 3686 } 3687 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3688 + count) % QDIO_MAX_BUFFERS_PER_Q; 3689 3690 netif_wake_queue(card->dev); 3691 3692 if (card->options.performance_stats) { 3693 int delta_t = qeth_get_micros(); 3694 delta_t -= card->perf_stats.cq_start_time; 3695 card->perf_stats.cq_time += delta_t; 3696 } 3697 out: 3698 return; 3699 } 3700 3701 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3702 unsigned int queue, int first_elem, int count, 3703 unsigned long card_ptr) 3704 { 3705 struct qeth_card *card = (struct qeth_card *)card_ptr; 3706 3707 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3708 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3709 3710 if (qeth_is_cq(card, queue)) 3711 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3712 else if (qdio_err) 3713 qeth_schedule_recovery(card); 3714 3715 3716 } 3717 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3718 3719 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3720 unsigned int qdio_error, int __queue, int first_element, 3721 int count, unsigned long card_ptr) 3722 { 3723 struct qeth_card *card = (struct qeth_card *) card_ptr; 3724 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3725 struct qeth_qdio_out_buffer *buffer; 3726 int i; 3727 3728 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3729 if (qdio_error & QDIO_ERROR_FATAL) { 3730 QETH_CARD_TEXT(card, 2, "achkcond"); 3731 netif_stop_queue(card->dev); 3732 qeth_schedule_recovery(card); 3733 return; 3734 } 3735 if (card->options.performance_stats) { 3736 card->perf_stats.outbound_handler_cnt++; 3737 card->perf_stats.outbound_handler_start_time = 3738 qeth_get_micros(); 3739 } 3740 for (i = first_element; i < (first_element + count); ++i) { 3741 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3742 buffer = queue->bufs[bidx]; 3743 qeth_handle_send_error(card, buffer, qdio_error); 3744 3745 if (queue->bufstates && 3746 (queue->bufstates[bidx].flags & 3747 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3748 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3749 3750 if (atomic_cmpxchg(&buffer->state, 3751 QETH_QDIO_BUF_PRIMED, 3752 QETH_QDIO_BUF_PENDING) == 3753 QETH_QDIO_BUF_PRIMED) { 3754 qeth_notify_skbs(queue, buffer, 3755 TX_NOTIFY_PENDING); 3756 } 3757 buffer->aob = queue->bufstates[bidx].aob; 3758 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3759 QETH_CARD_TEXT(queue->card, 5, "aob"); 3760 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3761 virt_to_phys(buffer->aob)); 3762 if (qeth_init_qdio_out_buf(queue, bidx)) { 3763 QETH_CARD_TEXT(card, 2, "outofbuf"); 3764 qeth_schedule_recovery(card); 3765 } 3766 } else { 3767 if (card->options.cq == QETH_CQ_ENABLED) { 3768 enum iucv_tx_notify n; 3769 3770 n = qeth_compute_cq_notification( 3771 buffer->buffer->element[15].sflags, 0); 3772 qeth_notify_skbs(queue, buffer, n); 3773 } 3774 3775 qeth_clear_output_buffer(queue, buffer, 3776 QETH_QDIO_BUF_EMPTY); 3777 } 3778 qeth_cleanup_handled_pending(queue, bidx, 0); 3779 } 3780 atomic_sub(count, &queue->used_buffers); 3781 /* check if we need to do something on this outbound queue */ 3782 if (card->info.type != QETH_CARD_TYPE_IQD) 3783 qeth_check_outbound_queue(queue); 3784 3785 netif_wake_queue(queue->card->dev); 3786 if (card->options.performance_stats) 3787 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3788 card->perf_stats.outbound_handler_start_time; 3789 } 3790 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3791 3792 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3793 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3794 { 3795 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3796 return 2; 3797 return queue_num; 3798 } 3799 3800 /** 3801 * Note: Function assumes that we have 4 outbound queues. 3802 */ 3803 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3804 int ipv, int cast_type) 3805 { 3806 __be16 *tci; 3807 u8 tos; 3808 3809 if (cast_type && card->info.is_multicast_different) 3810 return card->info.is_multicast_different & 3811 (card->qdio.no_out_queues - 1); 3812 3813 switch (card->qdio.do_prio_queueing) { 3814 case QETH_PRIO_Q_ING_TOS: 3815 case QETH_PRIO_Q_ING_PREC: 3816 switch (ipv) { 3817 case 4: 3818 tos = ipv4_get_dsfield(ip_hdr(skb)); 3819 break; 3820 case 6: 3821 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3822 break; 3823 default: 3824 return card->qdio.default_out_queue; 3825 } 3826 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3827 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3828 if (tos & IPTOS_MINCOST) 3829 return qeth_cut_iqd_prio(card, 3); 3830 if (tos & IPTOS_RELIABILITY) 3831 return 2; 3832 if (tos & IPTOS_THROUGHPUT) 3833 return 1; 3834 if (tos & IPTOS_LOWDELAY) 3835 return 0; 3836 break; 3837 case QETH_PRIO_Q_ING_SKB: 3838 if (skb->priority > 5) 3839 return 0; 3840 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3841 case QETH_PRIO_Q_ING_VLAN: 3842 tci = &((struct ethhdr *)skb->data)->h_proto; 3843 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3844 return qeth_cut_iqd_prio(card, 3845 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3846 break; 3847 default: 3848 break; 3849 } 3850 return card->qdio.default_out_queue; 3851 } 3852 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3853 3854 /** 3855 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3856 * @skb: SKB address 3857 * 3858 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3859 * fragmented part of the SKB. Returns zero for linear SKB. 3860 */ 3861 int qeth_get_elements_for_frags(struct sk_buff *skb) 3862 { 3863 int cnt, elements = 0; 3864 3865 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3866 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3867 3868 elements += qeth_get_elements_for_range( 3869 (addr_t)skb_frag_address(frag), 3870 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3871 } 3872 return elements; 3873 } 3874 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3875 3876 /** 3877 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3878 * @card: qeth card structure, to check max. elems. 3879 * @skb: SKB address 3880 * @extra_elems: extra elems needed, to check against max. 3881 * @data_offset: range starts at skb->data + data_offset 3882 * 3883 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3884 * skb data, including linear part and fragments. Checks if the result plus 3885 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3886 * Note: extra_elems is not included in the returned result. 3887 */ 3888 int qeth_get_elements_no(struct qeth_card *card, 3889 struct sk_buff *skb, int extra_elems, int data_offset) 3890 { 3891 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3892 int elements = qeth_get_elements_for_frags(skb); 3893 addr_t start = (addr_t)skb->data + data_offset; 3894 3895 if (start != end) 3896 elements += qeth_get_elements_for_range(start, end); 3897 3898 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3899 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3900 "(Number=%d / Length=%d). Discarded.\n", 3901 elements + extra_elems, skb->len); 3902 return 0; 3903 } 3904 return elements; 3905 } 3906 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3907 3908 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3909 { 3910 int hroom, inpage, rest; 3911 3912 if (((unsigned long)skb->data & PAGE_MASK) != 3913 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3914 hroom = skb_headroom(skb); 3915 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3916 rest = len - inpage; 3917 if (rest > hroom) 3918 return 1; 3919 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3920 skb->data -= rest; 3921 skb->tail -= rest; 3922 *hdr = (struct qeth_hdr *)skb->data; 3923 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3924 } 3925 return 0; 3926 } 3927 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3928 3929 /** 3930 * qeth_push_hdr() - push a qeth_hdr onto an skb. 3931 * @skb: skb that the qeth_hdr should be pushed onto. 3932 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3933 * it contains a valid pointer to a qeth_hdr. 3934 * @len: length of the hdr that needs to be pushed on. 3935 * 3936 * Returns the pushed length. If the header can't be pushed on 3937 * (eg. because it would cross a page boundary), it is allocated from 3938 * the cache instead and 0 is returned. 3939 * Error to create the hdr is indicated by returning with < 0. 3940 */ 3941 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len) 3942 { 3943 if (skb_headroom(skb) >= len && 3944 qeth_get_elements_for_range((addr_t)skb->data - len, 3945 (addr_t)skb->data) == 1) { 3946 *hdr = skb_push(skb, len); 3947 return len; 3948 } 3949 /* fall back */ 3950 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3951 if (!*hdr) 3952 return -ENOMEM; 3953 return 0; 3954 } 3955 EXPORT_SYMBOL_GPL(qeth_push_hdr); 3956 3957 static void __qeth_fill_buffer(struct sk_buff *skb, 3958 struct qeth_qdio_out_buffer *buf, 3959 bool is_first_elem, unsigned int offset) 3960 { 3961 struct qdio_buffer *buffer = buf->buffer; 3962 int element = buf->next_element_to_fill; 3963 int length = skb_headlen(skb) - offset; 3964 char *data = skb->data + offset; 3965 int length_here, cnt; 3966 3967 /* map linear part into buffer element(s) */ 3968 while (length > 0) { 3969 /* length_here is the remaining amount of data in this page */ 3970 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3971 if (length < length_here) 3972 length_here = length; 3973 3974 buffer->element[element].addr = data; 3975 buffer->element[element].length = length_here; 3976 length -= length_here; 3977 if (is_first_elem) { 3978 is_first_elem = false; 3979 if (length || skb_is_nonlinear(skb)) 3980 /* skb needs additional elements */ 3981 buffer->element[element].eflags = 3982 SBAL_EFLAGS_FIRST_FRAG; 3983 else 3984 buffer->element[element].eflags = 0; 3985 } else { 3986 buffer->element[element].eflags = 3987 SBAL_EFLAGS_MIDDLE_FRAG; 3988 } 3989 data += length_here; 3990 element++; 3991 } 3992 3993 /* map page frags into buffer element(s) */ 3994 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3995 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3996 3997 data = skb_frag_address(frag); 3998 length = skb_frag_size(frag); 3999 while (length > 0) { 4000 length_here = PAGE_SIZE - 4001 ((unsigned long) data % PAGE_SIZE); 4002 if (length < length_here) 4003 length_here = length; 4004 4005 buffer->element[element].addr = data; 4006 buffer->element[element].length = length_here; 4007 buffer->element[element].eflags = 4008 SBAL_EFLAGS_MIDDLE_FRAG; 4009 length -= length_here; 4010 data += length_here; 4011 element++; 4012 } 4013 } 4014 4015 if (buffer->element[element - 1].eflags) 4016 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 4017 buf->next_element_to_fill = element; 4018 } 4019 4020 /** 4021 * qeth_fill_buffer() - map skb into an output buffer 4022 * @queue: QDIO queue to submit the buffer on 4023 * @buf: buffer to transport the skb 4024 * @skb: skb to map into the buffer 4025 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 4026 * from qeth_core_header_cache. 4027 * @offset: when mapping the skb, start at skb->data + offset 4028 * @hd_len: if > 0, build a dedicated header element of this size 4029 */ 4030 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 4031 struct qeth_qdio_out_buffer *buf, 4032 struct sk_buff *skb, struct qeth_hdr *hdr, 4033 unsigned int offset, unsigned int hd_len) 4034 { 4035 struct qdio_buffer *buffer = buf->buffer; 4036 bool is_first_elem = true; 4037 int flush_cnt = 0; 4038 4039 refcount_inc(&skb->users); 4040 skb_queue_tail(&buf->skb_list, skb); 4041 4042 /* build dedicated header element */ 4043 if (hd_len) { 4044 int element = buf->next_element_to_fill; 4045 is_first_elem = false; 4046 4047 buffer->element[element].addr = hdr; 4048 buffer->element[element].length = hd_len; 4049 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4050 /* remember to free cache-allocated qeth_hdr: */ 4051 buf->is_header[element] = ((void *)hdr != skb->data); 4052 buf->next_element_to_fill++; 4053 } 4054 4055 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 4056 4057 if (!queue->do_pack) { 4058 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4059 /* set state to PRIMED -> will be flushed */ 4060 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4061 flush_cnt = 1; 4062 } else { 4063 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4064 if (queue->card->options.performance_stats) 4065 queue->card->perf_stats.skbs_sent_pack++; 4066 if (buf->next_element_to_fill >= 4067 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4068 /* 4069 * packed buffer if full -> set state PRIMED 4070 * -> will be flushed 4071 */ 4072 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4073 flush_cnt = 1; 4074 } 4075 } 4076 return flush_cnt; 4077 } 4078 4079 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4080 struct qeth_hdr *hdr, unsigned int offset, 4081 unsigned int hd_len) 4082 { 4083 int index = queue->next_buf_to_fill; 4084 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 4085 4086 /* 4087 * check if buffer is empty to make sure that we do not 'overtake' 4088 * ourselves and try to fill a buffer that is already primed 4089 */ 4090 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4091 return -EBUSY; 4092 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 4093 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4094 qeth_flush_buffers(queue, index, 1); 4095 return 0; 4096 } 4097 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4098 4099 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4100 struct sk_buff *skb, struct qeth_hdr *hdr, 4101 unsigned int offset, unsigned int hd_len, 4102 int elements_needed) 4103 { 4104 struct qeth_qdio_out_buffer *buffer; 4105 int start_index; 4106 int flush_count = 0; 4107 int do_pack = 0; 4108 int tmp; 4109 int rc = 0; 4110 4111 /* spin until we get the queue ... */ 4112 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4113 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4114 start_index = queue->next_buf_to_fill; 4115 buffer = queue->bufs[queue->next_buf_to_fill]; 4116 /* 4117 * check if buffer is empty to make sure that we do not 'overtake' 4118 * ourselves and try to fill a buffer that is already primed 4119 */ 4120 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4121 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4122 return -EBUSY; 4123 } 4124 /* check if we need to switch packing state of this queue */ 4125 qeth_switch_to_packing_if_needed(queue); 4126 if (queue->do_pack) { 4127 do_pack = 1; 4128 /* does packet fit in current buffer? */ 4129 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4130 buffer->next_element_to_fill) < elements_needed) { 4131 /* ... no -> set state PRIMED */ 4132 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4133 flush_count++; 4134 queue->next_buf_to_fill = 4135 (queue->next_buf_to_fill + 1) % 4136 QDIO_MAX_BUFFERS_PER_Q; 4137 buffer = queue->bufs[queue->next_buf_to_fill]; 4138 /* we did a step forward, so check buffer state 4139 * again */ 4140 if (atomic_read(&buffer->state) != 4141 QETH_QDIO_BUF_EMPTY) { 4142 qeth_flush_buffers(queue, start_index, 4143 flush_count); 4144 atomic_set(&queue->state, 4145 QETH_OUT_Q_UNLOCKED); 4146 rc = -EBUSY; 4147 goto out; 4148 } 4149 } 4150 } 4151 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4152 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4153 QDIO_MAX_BUFFERS_PER_Q; 4154 flush_count += tmp; 4155 if (flush_count) 4156 qeth_flush_buffers(queue, start_index, flush_count); 4157 else if (!atomic_read(&queue->set_pci_flags_count)) 4158 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4159 /* 4160 * queue->state will go from LOCKED -> UNLOCKED or from 4161 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4162 * (switch packing state or flush buffer to get another pci flag out). 4163 * In that case we will enter this loop 4164 */ 4165 while (atomic_dec_return(&queue->state)) { 4166 start_index = queue->next_buf_to_fill; 4167 /* check if we can go back to non-packing state */ 4168 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4169 /* 4170 * check if we need to flush a packing buffer to get a pci 4171 * flag out on the queue 4172 */ 4173 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4174 tmp = qeth_prep_flush_pack_buffer(queue); 4175 if (tmp) { 4176 qeth_flush_buffers(queue, start_index, tmp); 4177 flush_count += tmp; 4178 } 4179 } 4180 out: 4181 /* at this point the queue is UNLOCKED again */ 4182 if (queue->card->options.performance_stats && do_pack) 4183 queue->card->perf_stats.bufs_sent_pack += flush_count; 4184 4185 return rc; 4186 } 4187 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4188 4189 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4190 struct qeth_reply *reply, unsigned long data) 4191 { 4192 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4193 struct qeth_ipacmd_setadpparms *setparms; 4194 4195 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4196 4197 setparms = &(cmd->data.setadapterparms); 4198 if (qeth_setadpparms_inspect_rc(cmd)) { 4199 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4200 setparms->data.mode = SET_PROMISC_MODE_OFF; 4201 } 4202 card->info.promisc_mode = setparms->data.mode; 4203 return 0; 4204 } 4205 4206 void qeth_setadp_promisc_mode(struct qeth_card *card) 4207 { 4208 enum qeth_ipa_promisc_modes mode; 4209 struct net_device *dev = card->dev; 4210 struct qeth_cmd_buffer *iob; 4211 struct qeth_ipa_cmd *cmd; 4212 4213 QETH_CARD_TEXT(card, 4, "setprom"); 4214 4215 if (((dev->flags & IFF_PROMISC) && 4216 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4217 (!(dev->flags & IFF_PROMISC) && 4218 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4219 return; 4220 mode = SET_PROMISC_MODE_OFF; 4221 if (dev->flags & IFF_PROMISC) 4222 mode = SET_PROMISC_MODE_ON; 4223 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4224 4225 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4226 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4227 if (!iob) 4228 return; 4229 cmd = __ipa_cmd(iob); 4230 cmd->data.setadapterparms.data.mode = mode; 4231 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4232 } 4233 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4234 4235 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4236 { 4237 struct qeth_card *card; 4238 char dbf_text[15]; 4239 4240 card = dev->ml_priv; 4241 4242 QETH_CARD_TEXT(card, 4, "chgmtu"); 4243 sprintf(dbf_text, "%8x", new_mtu); 4244 QETH_CARD_TEXT(card, 4, dbf_text); 4245 4246 if (!qeth_mtu_is_valid(card, new_mtu)) 4247 return -EINVAL; 4248 dev->mtu = new_mtu; 4249 return 0; 4250 } 4251 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4252 4253 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4254 { 4255 struct qeth_card *card; 4256 4257 card = dev->ml_priv; 4258 4259 QETH_CARD_TEXT(card, 5, "getstat"); 4260 4261 return &card->stats; 4262 } 4263 EXPORT_SYMBOL_GPL(qeth_get_stats); 4264 4265 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4266 struct qeth_reply *reply, unsigned long data) 4267 { 4268 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4269 4270 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4271 if (qeth_setadpparms_inspect_rc(cmd)) 4272 return 0; 4273 4274 if (!card->options.layer2 || 4275 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4276 ether_addr_copy(card->dev->dev_addr, 4277 cmd->data.setadapterparms.data.change_addr.addr); 4278 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4279 } 4280 return 0; 4281 } 4282 4283 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4284 { 4285 int rc; 4286 struct qeth_cmd_buffer *iob; 4287 struct qeth_ipa_cmd *cmd; 4288 4289 QETH_CARD_TEXT(card, 4, "chgmac"); 4290 4291 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4292 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4293 sizeof(struct qeth_change_addr)); 4294 if (!iob) 4295 return -ENOMEM; 4296 cmd = __ipa_cmd(iob); 4297 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4298 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4299 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4300 card->dev->dev_addr); 4301 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4302 NULL); 4303 return rc; 4304 } 4305 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4306 4307 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4308 struct qeth_reply *reply, unsigned long data) 4309 { 4310 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4311 struct qeth_set_access_ctrl *access_ctrl_req; 4312 int fallback = *(int *)reply->param; 4313 4314 QETH_CARD_TEXT(card, 4, "setaccb"); 4315 if (cmd->hdr.return_code) 4316 return 0; 4317 qeth_setadpparms_inspect_rc(cmd); 4318 4319 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4320 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4321 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4322 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4323 cmd->data.setadapterparms.hdr.return_code); 4324 if (cmd->data.setadapterparms.hdr.return_code != 4325 SET_ACCESS_CTRL_RC_SUCCESS) 4326 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4327 card->gdev->dev.kobj.name, 4328 access_ctrl_req->subcmd_code, 4329 cmd->data.setadapterparms.hdr.return_code); 4330 switch (cmd->data.setadapterparms.hdr.return_code) { 4331 case SET_ACCESS_CTRL_RC_SUCCESS: 4332 if (card->options.isolation == ISOLATION_MODE_NONE) { 4333 dev_info(&card->gdev->dev, 4334 "QDIO data connection isolation is deactivated\n"); 4335 } else { 4336 dev_info(&card->gdev->dev, 4337 "QDIO data connection isolation is activated\n"); 4338 } 4339 break; 4340 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4341 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4342 "deactivated\n", dev_name(&card->gdev->dev)); 4343 if (fallback) 4344 card->options.isolation = card->options.prev_isolation; 4345 break; 4346 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4347 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4348 " activated\n", dev_name(&card->gdev->dev)); 4349 if (fallback) 4350 card->options.isolation = card->options.prev_isolation; 4351 break; 4352 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4353 dev_err(&card->gdev->dev, "Adapter does not " 4354 "support QDIO data connection isolation\n"); 4355 break; 4356 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4357 dev_err(&card->gdev->dev, 4358 "Adapter is dedicated. " 4359 "QDIO data connection isolation not supported\n"); 4360 if (fallback) 4361 card->options.isolation = card->options.prev_isolation; 4362 break; 4363 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4364 dev_err(&card->gdev->dev, 4365 "TSO does not permit QDIO data connection isolation\n"); 4366 if (fallback) 4367 card->options.isolation = card->options.prev_isolation; 4368 break; 4369 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4370 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4371 "support reflective relay mode\n"); 4372 if (fallback) 4373 card->options.isolation = card->options.prev_isolation; 4374 break; 4375 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4376 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4377 "enabled at the adjacent switch port"); 4378 if (fallback) 4379 card->options.isolation = card->options.prev_isolation; 4380 break; 4381 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4382 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4383 "at the adjacent switch failed\n"); 4384 break; 4385 default: 4386 /* this should never happen */ 4387 if (fallback) 4388 card->options.isolation = card->options.prev_isolation; 4389 break; 4390 } 4391 return 0; 4392 } 4393 4394 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4395 enum qeth_ipa_isolation_modes isolation, int fallback) 4396 { 4397 int rc; 4398 struct qeth_cmd_buffer *iob; 4399 struct qeth_ipa_cmd *cmd; 4400 struct qeth_set_access_ctrl *access_ctrl_req; 4401 4402 QETH_CARD_TEXT(card, 4, "setacctl"); 4403 4404 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4405 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4406 4407 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4408 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4409 sizeof(struct qeth_set_access_ctrl)); 4410 if (!iob) 4411 return -ENOMEM; 4412 cmd = __ipa_cmd(iob); 4413 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4414 access_ctrl_req->subcmd_code = isolation; 4415 4416 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4417 &fallback); 4418 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4419 return rc; 4420 } 4421 4422 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4423 { 4424 int rc = 0; 4425 4426 QETH_CARD_TEXT(card, 4, "setactlo"); 4427 4428 if ((card->info.type == QETH_CARD_TYPE_OSD || 4429 card->info.type == QETH_CARD_TYPE_OSX) && 4430 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4431 rc = qeth_setadpparms_set_access_ctrl(card, 4432 card->options.isolation, fallback); 4433 if (rc) { 4434 QETH_DBF_MESSAGE(3, 4435 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4436 card->gdev->dev.kobj.name, 4437 rc); 4438 rc = -EOPNOTSUPP; 4439 } 4440 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4441 card->options.isolation = ISOLATION_MODE_NONE; 4442 4443 dev_err(&card->gdev->dev, "Adapter does not " 4444 "support QDIO data connection isolation\n"); 4445 rc = -EOPNOTSUPP; 4446 } 4447 return rc; 4448 } 4449 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4450 4451 void qeth_tx_timeout(struct net_device *dev) 4452 { 4453 struct qeth_card *card; 4454 4455 card = dev->ml_priv; 4456 QETH_CARD_TEXT(card, 4, "txtimeo"); 4457 card->stats.tx_errors++; 4458 qeth_schedule_recovery(card); 4459 } 4460 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4461 4462 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4463 { 4464 struct qeth_card *card = dev->ml_priv; 4465 int rc = 0; 4466 4467 switch (regnum) { 4468 case MII_BMCR: /* Basic mode control register */ 4469 rc = BMCR_FULLDPLX; 4470 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4471 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4472 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4473 rc |= BMCR_SPEED100; 4474 break; 4475 case MII_BMSR: /* Basic mode status register */ 4476 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4477 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4478 BMSR_100BASE4; 4479 break; 4480 case MII_PHYSID1: /* PHYS ID 1 */ 4481 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4482 dev->dev_addr[2]; 4483 rc = (rc >> 5) & 0xFFFF; 4484 break; 4485 case MII_PHYSID2: /* PHYS ID 2 */ 4486 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4487 break; 4488 case MII_ADVERTISE: /* Advertisement control reg */ 4489 rc = ADVERTISE_ALL; 4490 break; 4491 case MII_LPA: /* Link partner ability reg */ 4492 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4493 LPA_100BASE4 | LPA_LPACK; 4494 break; 4495 case MII_EXPANSION: /* Expansion register */ 4496 break; 4497 case MII_DCOUNTER: /* disconnect counter */ 4498 break; 4499 case MII_FCSCOUNTER: /* false carrier counter */ 4500 break; 4501 case MII_NWAYTEST: /* N-way auto-neg test register */ 4502 break; 4503 case MII_RERRCOUNTER: /* rx error counter */ 4504 rc = card->stats.rx_errors; 4505 break; 4506 case MII_SREVISION: /* silicon revision */ 4507 break; 4508 case MII_RESV1: /* reserved 1 */ 4509 break; 4510 case MII_LBRERROR: /* loopback, rx, bypass error */ 4511 break; 4512 case MII_PHYADDR: /* physical address */ 4513 break; 4514 case MII_RESV2: /* reserved 2 */ 4515 break; 4516 case MII_TPISTATUS: /* TPI status for 10mbps */ 4517 break; 4518 case MII_NCONFIG: /* network interface config */ 4519 break; 4520 default: 4521 break; 4522 } 4523 return rc; 4524 } 4525 4526 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4527 struct qeth_cmd_buffer *iob, int len, 4528 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4529 unsigned long), 4530 void *reply_param) 4531 { 4532 u16 s1, s2; 4533 4534 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4535 4536 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4537 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4538 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4539 /* adjust PDU length fields in IPA_PDU_HEADER */ 4540 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4541 s2 = (u32) len; 4542 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4543 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4544 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4545 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4546 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4547 reply_cb, reply_param); 4548 } 4549 4550 static int qeth_snmp_command_cb(struct qeth_card *card, 4551 struct qeth_reply *reply, unsigned long sdata) 4552 { 4553 struct qeth_ipa_cmd *cmd; 4554 struct qeth_arp_query_info *qinfo; 4555 struct qeth_snmp_cmd *snmp; 4556 unsigned char *data; 4557 __u16 data_len; 4558 4559 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4560 4561 cmd = (struct qeth_ipa_cmd *) sdata; 4562 data = (unsigned char *)((char *)cmd - reply->offset); 4563 qinfo = (struct qeth_arp_query_info *) reply->param; 4564 snmp = &cmd->data.setadapterparms.data.snmp; 4565 4566 if (cmd->hdr.return_code) { 4567 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4568 return 0; 4569 } 4570 if (cmd->data.setadapterparms.hdr.return_code) { 4571 cmd->hdr.return_code = 4572 cmd->data.setadapterparms.hdr.return_code; 4573 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4574 return 0; 4575 } 4576 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4577 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4578 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4579 else 4580 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4581 4582 /* check if there is enough room in userspace */ 4583 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4584 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4585 cmd->hdr.return_code = IPA_RC_ENOMEM; 4586 return 0; 4587 } 4588 QETH_CARD_TEXT_(card, 4, "snore%i", 4589 cmd->data.setadapterparms.hdr.used_total); 4590 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4591 cmd->data.setadapterparms.hdr.seq_no); 4592 /*copy entries to user buffer*/ 4593 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4594 memcpy(qinfo->udata + qinfo->udata_offset, 4595 (char *)snmp, 4596 data_len + offsetof(struct qeth_snmp_cmd, data)); 4597 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4598 } else { 4599 memcpy(qinfo->udata + qinfo->udata_offset, 4600 (char *)&snmp->request, data_len); 4601 } 4602 qinfo->udata_offset += data_len; 4603 /* check if all replies received ... */ 4604 QETH_CARD_TEXT_(card, 4, "srtot%i", 4605 cmd->data.setadapterparms.hdr.used_total); 4606 QETH_CARD_TEXT_(card, 4, "srseq%i", 4607 cmd->data.setadapterparms.hdr.seq_no); 4608 if (cmd->data.setadapterparms.hdr.seq_no < 4609 cmd->data.setadapterparms.hdr.used_total) 4610 return 1; 4611 return 0; 4612 } 4613 4614 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4615 { 4616 struct qeth_cmd_buffer *iob; 4617 struct qeth_ipa_cmd *cmd; 4618 struct qeth_snmp_ureq *ureq; 4619 unsigned int req_len; 4620 struct qeth_arp_query_info qinfo = {0, }; 4621 int rc = 0; 4622 4623 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4624 4625 if (card->info.guestlan) 4626 return -EOPNOTSUPP; 4627 4628 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4629 (!card->options.layer2)) { 4630 return -EOPNOTSUPP; 4631 } 4632 /* skip 4 bytes (data_len struct member) to get req_len */ 4633 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4634 return -EFAULT; 4635 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4636 sizeof(struct qeth_ipacmd_hdr) - 4637 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4638 return -EINVAL; 4639 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4640 if (IS_ERR(ureq)) { 4641 QETH_CARD_TEXT(card, 2, "snmpnome"); 4642 return PTR_ERR(ureq); 4643 } 4644 qinfo.udata_len = ureq->hdr.data_len; 4645 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4646 if (!qinfo.udata) { 4647 kfree(ureq); 4648 return -ENOMEM; 4649 } 4650 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4651 4652 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4653 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4654 if (!iob) { 4655 rc = -ENOMEM; 4656 goto out; 4657 } 4658 cmd = __ipa_cmd(iob); 4659 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4660 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4661 qeth_snmp_command_cb, (void *)&qinfo); 4662 if (rc) 4663 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4664 QETH_CARD_IFNAME(card), rc); 4665 else { 4666 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4667 rc = -EFAULT; 4668 } 4669 out: 4670 kfree(ureq); 4671 kfree(qinfo.udata); 4672 return rc; 4673 } 4674 4675 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4676 struct qeth_reply *reply, unsigned long data) 4677 { 4678 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4679 struct qeth_qoat_priv *priv; 4680 char *resdata; 4681 int resdatalen; 4682 4683 QETH_CARD_TEXT(card, 3, "qoatcb"); 4684 if (qeth_setadpparms_inspect_rc(cmd)) 4685 return 0; 4686 4687 priv = (struct qeth_qoat_priv *)reply->param; 4688 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4689 resdata = (char *)data + 28; 4690 4691 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4692 cmd->hdr.return_code = IPA_RC_FFFF; 4693 return 0; 4694 } 4695 4696 memcpy((priv->buffer + priv->response_len), resdata, 4697 resdatalen); 4698 priv->response_len += resdatalen; 4699 4700 if (cmd->data.setadapterparms.hdr.seq_no < 4701 cmd->data.setadapterparms.hdr.used_total) 4702 return 1; 4703 return 0; 4704 } 4705 4706 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4707 { 4708 int rc = 0; 4709 struct qeth_cmd_buffer *iob; 4710 struct qeth_ipa_cmd *cmd; 4711 struct qeth_query_oat *oat_req; 4712 struct qeth_query_oat_data oat_data; 4713 struct qeth_qoat_priv priv; 4714 void __user *tmp; 4715 4716 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4717 4718 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4719 rc = -EOPNOTSUPP; 4720 goto out; 4721 } 4722 4723 if (copy_from_user(&oat_data, udata, 4724 sizeof(struct qeth_query_oat_data))) { 4725 rc = -EFAULT; 4726 goto out; 4727 } 4728 4729 priv.buffer_len = oat_data.buffer_len; 4730 priv.response_len = 0; 4731 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4732 if (!priv.buffer) { 4733 rc = -ENOMEM; 4734 goto out; 4735 } 4736 4737 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4738 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4739 sizeof(struct qeth_query_oat)); 4740 if (!iob) { 4741 rc = -ENOMEM; 4742 goto out_free; 4743 } 4744 cmd = __ipa_cmd(iob); 4745 oat_req = &cmd->data.setadapterparms.data.query_oat; 4746 oat_req->subcmd_code = oat_data.command; 4747 4748 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4749 &priv); 4750 if (!rc) { 4751 if (is_compat_task()) 4752 tmp = compat_ptr(oat_data.ptr); 4753 else 4754 tmp = (void __user *)(unsigned long)oat_data.ptr; 4755 4756 if (copy_to_user(tmp, priv.buffer, 4757 priv.response_len)) { 4758 rc = -EFAULT; 4759 goto out_free; 4760 } 4761 4762 oat_data.response_len = priv.response_len; 4763 4764 if (copy_to_user(udata, &oat_data, 4765 sizeof(struct qeth_query_oat_data))) 4766 rc = -EFAULT; 4767 } else 4768 if (rc == IPA_RC_FFFF) 4769 rc = -EFAULT; 4770 4771 out_free: 4772 kfree(priv.buffer); 4773 out: 4774 return rc; 4775 } 4776 4777 static int qeth_query_card_info_cb(struct qeth_card *card, 4778 struct qeth_reply *reply, unsigned long data) 4779 { 4780 struct carrier_info *carrier_info = (struct carrier_info *)reply->param; 4781 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4782 struct qeth_query_card_info *card_info; 4783 4784 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4785 if (qeth_setadpparms_inspect_rc(cmd)) 4786 return 0; 4787 4788 card_info = &cmd->data.setadapterparms.data.card_info; 4789 carrier_info->card_type = card_info->card_type; 4790 carrier_info->port_mode = card_info->port_mode; 4791 carrier_info->port_speed = card_info->port_speed; 4792 return 0; 4793 } 4794 4795 static int qeth_query_card_info(struct qeth_card *card, 4796 struct carrier_info *carrier_info) 4797 { 4798 struct qeth_cmd_buffer *iob; 4799 4800 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4801 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4802 return -EOPNOTSUPP; 4803 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4804 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4805 if (!iob) 4806 return -ENOMEM; 4807 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4808 (void *)carrier_info); 4809 } 4810 4811 /** 4812 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4813 * @card: pointer to a qeth_card 4814 * 4815 * Returns 4816 * 0, if a MAC address has been set for the card's netdevice 4817 * a return code, for various error conditions 4818 */ 4819 int qeth_vm_request_mac(struct qeth_card *card) 4820 { 4821 struct diag26c_mac_resp *response; 4822 struct diag26c_mac_req *request; 4823 struct ccw_dev_id id; 4824 int rc; 4825 4826 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4827 4828 if (!card->dev) 4829 return -ENODEV; 4830 4831 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4832 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4833 if (!request || !response) { 4834 rc = -ENOMEM; 4835 goto out; 4836 } 4837 4838 ccw_device_get_id(CARD_RDEV(card), &id); 4839 request->resp_buf_len = sizeof(*response); 4840 request->resp_version = DIAG26C_VERSION2; 4841 request->op_code = DIAG26C_GET_MAC; 4842 request->devno = id.devno; 4843 4844 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4845 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4846 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4847 if (rc) 4848 goto out; 4849 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4850 4851 if (request->resp_buf_len < sizeof(*response) || 4852 response->version != request->resp_version) { 4853 rc = -EIO; 4854 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4855 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4856 sizeof(request->resp_buf_len)); 4857 } else if (!is_valid_ether_addr(response->mac)) { 4858 rc = -EINVAL; 4859 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4860 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4861 } else { 4862 ether_addr_copy(card->dev->dev_addr, response->mac); 4863 } 4864 4865 out: 4866 kfree(response); 4867 kfree(request); 4868 return rc; 4869 } 4870 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4871 4872 static int qeth_get_qdio_q_format(struct qeth_card *card) 4873 { 4874 if (card->info.type == QETH_CARD_TYPE_IQD) 4875 return QDIO_IQDIO_QFMT; 4876 else 4877 return QDIO_QETH_QFMT; 4878 } 4879 4880 static void qeth_determine_capabilities(struct qeth_card *card) 4881 { 4882 int rc; 4883 int length; 4884 char *prcd; 4885 struct ccw_device *ddev; 4886 int ddev_offline = 0; 4887 4888 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4889 ddev = CARD_DDEV(card); 4890 if (!ddev->online) { 4891 ddev_offline = 1; 4892 rc = ccw_device_set_online(ddev); 4893 if (rc) { 4894 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4895 goto out; 4896 } 4897 } 4898 4899 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4900 if (rc) { 4901 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4902 dev_name(&card->gdev->dev), rc); 4903 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4904 goto out_offline; 4905 } 4906 qeth_configure_unitaddr(card, prcd); 4907 if (ddev_offline) 4908 qeth_configure_blkt_default(card, prcd); 4909 kfree(prcd); 4910 4911 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4912 if (rc) 4913 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4914 4915 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4916 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4917 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4918 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4919 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4920 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4921 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4922 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4923 dev_info(&card->gdev->dev, 4924 "Completion Queueing supported\n"); 4925 } else { 4926 card->options.cq = QETH_CQ_NOTAVAILABLE; 4927 } 4928 4929 4930 out_offline: 4931 if (ddev_offline == 1) 4932 ccw_device_set_offline(ddev); 4933 out: 4934 return; 4935 } 4936 4937 static void qeth_qdio_establish_cq(struct qeth_card *card, 4938 struct qdio_buffer **in_sbal_ptrs, 4939 void (**queue_start_poll) 4940 (struct ccw_device *, int, 4941 unsigned long)) 4942 { 4943 int i; 4944 4945 if (card->options.cq == QETH_CQ_ENABLED) { 4946 int offset = QDIO_MAX_BUFFERS_PER_Q * 4947 (card->qdio.no_in_queues - 1); 4948 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4949 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4950 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4951 } 4952 4953 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4954 } 4955 } 4956 4957 static int qeth_qdio_establish(struct qeth_card *card) 4958 { 4959 struct qdio_initialize init_data; 4960 char *qib_param_field; 4961 struct qdio_buffer **in_sbal_ptrs; 4962 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4963 struct qdio_buffer **out_sbal_ptrs; 4964 int i, j, k; 4965 int rc = 0; 4966 4967 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4968 4969 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4970 GFP_KERNEL); 4971 if (!qib_param_field) { 4972 rc = -ENOMEM; 4973 goto out_free_nothing; 4974 } 4975 4976 qeth_create_qib_param_field(card, qib_param_field); 4977 qeth_create_qib_param_field_blkt(card, qib_param_field); 4978 4979 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4980 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4981 GFP_KERNEL); 4982 if (!in_sbal_ptrs) { 4983 rc = -ENOMEM; 4984 goto out_free_qib_param; 4985 } 4986 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4987 in_sbal_ptrs[i] = (struct qdio_buffer *) 4988 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4989 } 4990 4991 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4992 GFP_KERNEL); 4993 if (!queue_start_poll) { 4994 rc = -ENOMEM; 4995 goto out_free_in_sbals; 4996 } 4997 for (i = 0; i < card->qdio.no_in_queues; ++i) 4998 queue_start_poll[i] = card->discipline->start_poll; 4999 5000 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 5001 5002 out_sbal_ptrs = 5003 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 5004 sizeof(void *), GFP_KERNEL); 5005 if (!out_sbal_ptrs) { 5006 rc = -ENOMEM; 5007 goto out_free_queue_start_poll; 5008 } 5009 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 5010 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 5011 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 5012 card->qdio.out_qs[i]->bufs[j]->buffer); 5013 } 5014 5015 memset(&init_data, 0, sizeof(struct qdio_initialize)); 5016 init_data.cdev = CARD_DDEV(card); 5017 init_data.q_format = qeth_get_qdio_q_format(card); 5018 init_data.qib_param_field_format = 0; 5019 init_data.qib_param_field = qib_param_field; 5020 init_data.no_input_qs = card->qdio.no_in_queues; 5021 init_data.no_output_qs = card->qdio.no_out_queues; 5022 init_data.input_handler = card->discipline->input_handler; 5023 init_data.output_handler = card->discipline->output_handler; 5024 init_data.queue_start_poll_array = queue_start_poll; 5025 init_data.int_parm = (unsigned long) card; 5026 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 5027 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 5028 init_data.output_sbal_state_array = card->qdio.out_bufstates; 5029 init_data.scan_threshold = 5030 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 5031 5032 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 5033 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 5034 rc = qdio_allocate(&init_data); 5035 if (rc) { 5036 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5037 goto out; 5038 } 5039 rc = qdio_establish(&init_data); 5040 if (rc) { 5041 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5042 qdio_free(CARD_DDEV(card)); 5043 } 5044 } 5045 5046 switch (card->options.cq) { 5047 case QETH_CQ_ENABLED: 5048 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5049 break; 5050 case QETH_CQ_DISABLED: 5051 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5052 break; 5053 default: 5054 break; 5055 } 5056 out: 5057 kfree(out_sbal_ptrs); 5058 out_free_queue_start_poll: 5059 kfree(queue_start_poll); 5060 out_free_in_sbals: 5061 kfree(in_sbal_ptrs); 5062 out_free_qib_param: 5063 kfree(qib_param_field); 5064 out_free_nothing: 5065 return rc; 5066 } 5067 5068 static void qeth_core_free_card(struct qeth_card *card) 5069 { 5070 5071 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5072 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5073 qeth_clean_channel(&card->read); 5074 qeth_clean_channel(&card->write); 5075 qeth_free_qdio_buffers(card); 5076 unregister_service_level(&card->qeth_service_level); 5077 kfree(card); 5078 } 5079 5080 void qeth_trace_features(struct qeth_card *card) 5081 { 5082 QETH_CARD_TEXT(card, 2, "features"); 5083 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5084 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5085 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5086 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5087 sizeof(card->info.diagass_support)); 5088 } 5089 EXPORT_SYMBOL_GPL(qeth_trace_features); 5090 5091 static struct ccw_device_id qeth_ids[] = { 5092 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5093 .driver_info = QETH_CARD_TYPE_OSD}, 5094 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5095 .driver_info = QETH_CARD_TYPE_IQD}, 5096 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5097 .driver_info = QETH_CARD_TYPE_OSN}, 5098 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5099 .driver_info = QETH_CARD_TYPE_OSM}, 5100 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5101 .driver_info = QETH_CARD_TYPE_OSX}, 5102 {}, 5103 }; 5104 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5105 5106 static struct ccw_driver qeth_ccw_driver = { 5107 .driver = { 5108 .owner = THIS_MODULE, 5109 .name = "qeth", 5110 }, 5111 .ids = qeth_ids, 5112 .probe = ccwgroup_probe_ccwdev, 5113 .remove = ccwgroup_remove_ccwdev, 5114 }; 5115 5116 int qeth_core_hardsetup_card(struct qeth_card *card) 5117 { 5118 int retries = 3; 5119 int rc; 5120 5121 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5122 atomic_set(&card->force_alloc_skb, 0); 5123 qeth_update_from_chp_desc(card); 5124 retry: 5125 if (retries < 3) 5126 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5127 dev_name(&card->gdev->dev)); 5128 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5129 ccw_device_set_offline(CARD_DDEV(card)); 5130 ccw_device_set_offline(CARD_WDEV(card)); 5131 ccw_device_set_offline(CARD_RDEV(card)); 5132 qdio_free(CARD_DDEV(card)); 5133 rc = ccw_device_set_online(CARD_RDEV(card)); 5134 if (rc) 5135 goto retriable; 5136 rc = ccw_device_set_online(CARD_WDEV(card)); 5137 if (rc) 5138 goto retriable; 5139 rc = ccw_device_set_online(CARD_DDEV(card)); 5140 if (rc) 5141 goto retriable; 5142 retriable: 5143 if (rc == -ERESTARTSYS) { 5144 QETH_DBF_TEXT(SETUP, 2, "break1"); 5145 return rc; 5146 } else if (rc) { 5147 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5148 if (--retries < 0) 5149 goto out; 5150 else 5151 goto retry; 5152 } 5153 qeth_determine_capabilities(card); 5154 qeth_init_tokens(card); 5155 qeth_init_func_level(card); 5156 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5157 if (rc == -ERESTARTSYS) { 5158 QETH_DBF_TEXT(SETUP, 2, "break2"); 5159 return rc; 5160 } else if (rc) { 5161 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5162 if (--retries < 0) 5163 goto out; 5164 else 5165 goto retry; 5166 } 5167 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5168 if (rc == -ERESTARTSYS) { 5169 QETH_DBF_TEXT(SETUP, 2, "break3"); 5170 return rc; 5171 } else if (rc) { 5172 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5173 if (--retries < 0) 5174 goto out; 5175 else 5176 goto retry; 5177 } 5178 card->read_or_write_problem = 0; 5179 rc = qeth_mpc_initialize(card); 5180 if (rc) { 5181 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5182 goto out; 5183 } 5184 5185 rc = qeth_send_startlan(card); 5186 if (rc) { 5187 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5188 if (rc == IPA_RC_LAN_OFFLINE) { 5189 dev_warn(&card->gdev->dev, 5190 "The LAN is offline\n"); 5191 card->lan_online = 0; 5192 } else { 5193 rc = -ENODEV; 5194 goto out; 5195 } 5196 } else 5197 card->lan_online = 1; 5198 5199 card->options.ipa4.supported_funcs = 0; 5200 card->options.ipa6.supported_funcs = 0; 5201 card->options.adp.supported_funcs = 0; 5202 card->options.sbp.supported_funcs = 0; 5203 card->info.diagass_support = 0; 5204 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5205 if (rc == -ENOMEM) 5206 goto out; 5207 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5208 rc = qeth_query_setadapterparms(card); 5209 if (rc < 0) { 5210 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5211 goto out; 5212 } 5213 } 5214 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5215 rc = qeth_query_setdiagass(card); 5216 if (rc < 0) { 5217 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5218 goto out; 5219 } 5220 } 5221 return 0; 5222 out: 5223 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5224 "an error on the device\n"); 5225 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5226 dev_name(&card->gdev->dev), rc); 5227 return rc; 5228 } 5229 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5230 5231 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5232 struct sk_buff *skb, int offset, int data_len) 5233 { 5234 struct page *page = virt_to_page(element->addr); 5235 unsigned int next_frag; 5236 5237 /* first fill the linear space */ 5238 if (!skb->len) { 5239 unsigned int linear = min(data_len, skb_tailroom(skb)); 5240 5241 skb_put_data(skb, element->addr + offset, linear); 5242 data_len -= linear; 5243 if (!data_len) 5244 return; 5245 offset += linear; 5246 /* fall through to add page frag for remaining data */ 5247 } 5248 5249 next_frag = skb_shinfo(skb)->nr_frags; 5250 get_page(page); 5251 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5252 } 5253 5254 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5255 { 5256 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5257 } 5258 5259 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5260 struct qeth_qdio_buffer *qethbuffer, 5261 struct qdio_buffer_element **__element, int *__offset, 5262 struct qeth_hdr **hdr) 5263 { 5264 struct qdio_buffer_element *element = *__element; 5265 struct qdio_buffer *buffer = qethbuffer->buffer; 5266 int offset = *__offset; 5267 struct sk_buff *skb; 5268 int skb_len = 0; 5269 void *data_ptr; 5270 int data_len; 5271 int headroom = 0; 5272 int use_rx_sg = 0; 5273 5274 /* qeth_hdr must not cross element boundaries */ 5275 while (element->length < offset + sizeof(struct qeth_hdr)) { 5276 if (qeth_is_last_sbale(element)) 5277 return NULL; 5278 element++; 5279 offset = 0; 5280 } 5281 *hdr = element->addr + offset; 5282 5283 offset += sizeof(struct qeth_hdr); 5284 switch ((*hdr)->hdr.l2.id) { 5285 case QETH_HEADER_TYPE_LAYER2: 5286 skb_len = (*hdr)->hdr.l2.pkt_length; 5287 break; 5288 case QETH_HEADER_TYPE_LAYER3: 5289 skb_len = (*hdr)->hdr.l3.length; 5290 headroom = ETH_HLEN; 5291 break; 5292 case QETH_HEADER_TYPE_OSN: 5293 skb_len = (*hdr)->hdr.osn.pdu_length; 5294 headroom = sizeof(struct qeth_hdr); 5295 break; 5296 default: 5297 break; 5298 } 5299 5300 if (!skb_len) 5301 return NULL; 5302 5303 if (((skb_len >= card->options.rx_sg_cb) && 5304 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5305 (!atomic_read(&card->force_alloc_skb))) || 5306 (card->options.cq == QETH_CQ_ENABLED)) 5307 use_rx_sg = 1; 5308 5309 if (use_rx_sg && qethbuffer->rx_skb) { 5310 /* QETH_CQ_ENABLED only: */ 5311 skb = qethbuffer->rx_skb; 5312 qethbuffer->rx_skb = NULL; 5313 } else { 5314 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5315 5316 skb = napi_alloc_skb(&card->napi, linear + headroom); 5317 } 5318 if (!skb) 5319 goto no_mem; 5320 if (headroom) 5321 skb_reserve(skb, headroom); 5322 5323 data_ptr = element->addr + offset; 5324 while (skb_len) { 5325 data_len = min(skb_len, (int)(element->length - offset)); 5326 if (data_len) { 5327 if (use_rx_sg) 5328 qeth_create_skb_frag(element, skb, offset, 5329 data_len); 5330 else 5331 skb_put_data(skb, data_ptr, data_len); 5332 } 5333 skb_len -= data_len; 5334 if (skb_len) { 5335 if (qeth_is_last_sbale(element)) { 5336 QETH_CARD_TEXT(card, 4, "unexeob"); 5337 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5338 dev_kfree_skb_any(skb); 5339 card->stats.rx_errors++; 5340 return NULL; 5341 } 5342 element++; 5343 offset = 0; 5344 data_ptr = element->addr; 5345 } else { 5346 offset += data_len; 5347 } 5348 } 5349 *__element = element; 5350 *__offset = offset; 5351 if (use_rx_sg && card->options.performance_stats) { 5352 card->perf_stats.sg_skbs_rx++; 5353 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5354 } 5355 return skb; 5356 no_mem: 5357 if (net_ratelimit()) { 5358 QETH_CARD_TEXT(card, 2, "noskbmem"); 5359 } 5360 card->stats.rx_dropped++; 5361 return NULL; 5362 } 5363 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5364 5365 int qeth_poll(struct napi_struct *napi, int budget) 5366 { 5367 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5368 int work_done = 0; 5369 struct qeth_qdio_buffer *buffer; 5370 int done; 5371 int new_budget = budget; 5372 5373 if (card->options.performance_stats) { 5374 card->perf_stats.inbound_cnt++; 5375 card->perf_stats.inbound_start_time = qeth_get_micros(); 5376 } 5377 5378 while (1) { 5379 if (!card->rx.b_count) { 5380 card->rx.qdio_err = 0; 5381 card->rx.b_count = qdio_get_next_buffers( 5382 card->data.ccwdev, 0, &card->rx.b_index, 5383 &card->rx.qdio_err); 5384 if (card->rx.b_count <= 0) { 5385 card->rx.b_count = 0; 5386 break; 5387 } 5388 card->rx.b_element = 5389 &card->qdio.in_q->bufs[card->rx.b_index] 5390 .buffer->element[0]; 5391 card->rx.e_offset = 0; 5392 } 5393 5394 while (card->rx.b_count) { 5395 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5396 if (!(card->rx.qdio_err && 5397 qeth_check_qdio_errors(card, buffer->buffer, 5398 card->rx.qdio_err, "qinerr"))) 5399 work_done += 5400 card->discipline->process_rx_buffer( 5401 card, new_budget, &done); 5402 else 5403 done = 1; 5404 5405 if (done) { 5406 if (card->options.performance_stats) 5407 card->perf_stats.bufs_rec++; 5408 qeth_put_buffer_pool_entry(card, 5409 buffer->pool_entry); 5410 qeth_queue_input_buffer(card, card->rx.b_index); 5411 card->rx.b_count--; 5412 if (card->rx.b_count) { 5413 card->rx.b_index = 5414 (card->rx.b_index + 1) % 5415 QDIO_MAX_BUFFERS_PER_Q; 5416 card->rx.b_element = 5417 &card->qdio.in_q 5418 ->bufs[card->rx.b_index] 5419 .buffer->element[0]; 5420 card->rx.e_offset = 0; 5421 } 5422 } 5423 5424 if (work_done >= budget) 5425 goto out; 5426 else 5427 new_budget = budget - work_done; 5428 } 5429 } 5430 5431 napi_complete_done(napi, work_done); 5432 if (qdio_start_irq(card->data.ccwdev, 0)) 5433 napi_schedule(&card->napi); 5434 out: 5435 if (card->options.performance_stats) 5436 card->perf_stats.inbound_time += qeth_get_micros() - 5437 card->perf_stats.inbound_start_time; 5438 return work_done; 5439 } 5440 EXPORT_SYMBOL_GPL(qeth_poll); 5441 5442 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5443 { 5444 if (!cmd->hdr.return_code) 5445 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5446 return cmd->hdr.return_code; 5447 } 5448 5449 int qeth_setassparms_cb(struct qeth_card *card, 5450 struct qeth_reply *reply, unsigned long data) 5451 { 5452 struct qeth_ipa_cmd *cmd; 5453 5454 QETH_CARD_TEXT(card, 4, "defadpcb"); 5455 5456 cmd = (struct qeth_ipa_cmd *) data; 5457 if (cmd->hdr.return_code == 0) { 5458 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5459 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5460 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5461 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5462 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5463 } 5464 return 0; 5465 } 5466 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5467 5468 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5469 enum qeth_ipa_funcs ipa_func, 5470 __u16 cmd_code, __u16 len, 5471 enum qeth_prot_versions prot) 5472 { 5473 struct qeth_cmd_buffer *iob; 5474 struct qeth_ipa_cmd *cmd; 5475 5476 QETH_CARD_TEXT(card, 4, "getasscm"); 5477 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5478 5479 if (iob) { 5480 cmd = __ipa_cmd(iob); 5481 cmd->data.setassparms.hdr.assist_no = ipa_func; 5482 cmd->data.setassparms.hdr.length = 8 + len; 5483 cmd->data.setassparms.hdr.command_code = cmd_code; 5484 cmd->data.setassparms.hdr.return_code = 0; 5485 cmd->data.setassparms.hdr.seq_no = 0; 5486 } 5487 5488 return iob; 5489 } 5490 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5491 5492 int qeth_send_setassparms(struct qeth_card *card, 5493 struct qeth_cmd_buffer *iob, __u16 len, long data, 5494 int (*reply_cb)(struct qeth_card *, 5495 struct qeth_reply *, unsigned long), 5496 void *reply_param) 5497 { 5498 int rc; 5499 struct qeth_ipa_cmd *cmd; 5500 5501 QETH_CARD_TEXT(card, 4, "sendassp"); 5502 5503 cmd = __ipa_cmd(iob); 5504 if (len <= sizeof(__u32)) 5505 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5506 else /* (len > sizeof(__u32)) */ 5507 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5508 5509 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5510 return rc; 5511 } 5512 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5513 5514 int qeth_send_simple_setassparms(struct qeth_card *card, 5515 enum qeth_ipa_funcs ipa_func, 5516 __u16 cmd_code, long data) 5517 { 5518 int rc; 5519 int length = 0; 5520 struct qeth_cmd_buffer *iob; 5521 5522 QETH_CARD_TEXT(card, 4, "simassp4"); 5523 if (data) 5524 length = sizeof(__u32); 5525 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5526 length, QETH_PROT_IPV4); 5527 if (!iob) 5528 return -ENOMEM; 5529 rc = qeth_send_setassparms(card, iob, length, data, 5530 qeth_setassparms_cb, NULL); 5531 return rc; 5532 } 5533 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5534 5535 static void qeth_unregister_dbf_views(void) 5536 { 5537 int x; 5538 for (x = 0; x < QETH_DBF_INFOS; x++) { 5539 debug_unregister(qeth_dbf[x].id); 5540 qeth_dbf[x].id = NULL; 5541 } 5542 } 5543 5544 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5545 { 5546 char dbf_txt_buf[32]; 5547 va_list args; 5548 5549 if (!debug_level_enabled(id, level)) 5550 return; 5551 va_start(args, fmt); 5552 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5553 va_end(args); 5554 debug_text_event(id, level, dbf_txt_buf); 5555 } 5556 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5557 5558 static int qeth_register_dbf_views(void) 5559 { 5560 int ret; 5561 int x; 5562 5563 for (x = 0; x < QETH_DBF_INFOS; x++) { 5564 /* register the areas */ 5565 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5566 qeth_dbf[x].pages, 5567 qeth_dbf[x].areas, 5568 qeth_dbf[x].len); 5569 if (qeth_dbf[x].id == NULL) { 5570 qeth_unregister_dbf_views(); 5571 return -ENOMEM; 5572 } 5573 5574 /* register a view */ 5575 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5576 if (ret) { 5577 qeth_unregister_dbf_views(); 5578 return ret; 5579 } 5580 5581 /* set a passing level */ 5582 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5583 } 5584 5585 return 0; 5586 } 5587 5588 int qeth_core_load_discipline(struct qeth_card *card, 5589 enum qeth_discipline_id discipline) 5590 { 5591 int rc = 0; 5592 5593 mutex_lock(&qeth_mod_mutex); 5594 switch (discipline) { 5595 case QETH_DISCIPLINE_LAYER3: 5596 card->discipline = try_then_request_module( 5597 symbol_get(qeth_l3_discipline), "qeth_l3"); 5598 break; 5599 case QETH_DISCIPLINE_LAYER2: 5600 card->discipline = try_then_request_module( 5601 symbol_get(qeth_l2_discipline), "qeth_l2"); 5602 break; 5603 default: 5604 break; 5605 } 5606 5607 if (!card->discipline) { 5608 dev_err(&card->gdev->dev, "There is no kernel module to " 5609 "support discipline %d\n", discipline); 5610 rc = -EINVAL; 5611 } 5612 mutex_unlock(&qeth_mod_mutex); 5613 return rc; 5614 } 5615 5616 void qeth_core_free_discipline(struct qeth_card *card) 5617 { 5618 if (card->options.layer2) 5619 symbol_put(qeth_l2_discipline); 5620 else 5621 symbol_put(qeth_l3_discipline); 5622 card->discipline = NULL; 5623 } 5624 5625 const struct device_type qeth_generic_devtype = { 5626 .name = "qeth_generic", 5627 .groups = qeth_generic_attr_groups, 5628 }; 5629 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5630 5631 static const struct device_type qeth_osn_devtype = { 5632 .name = "qeth_osn", 5633 .groups = qeth_osn_attr_groups, 5634 }; 5635 5636 #define DBF_NAME_LEN 20 5637 5638 struct qeth_dbf_entry { 5639 char dbf_name[DBF_NAME_LEN]; 5640 debug_info_t *dbf_info; 5641 struct list_head dbf_list; 5642 }; 5643 5644 static LIST_HEAD(qeth_dbf_list); 5645 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5646 5647 static debug_info_t *qeth_get_dbf_entry(char *name) 5648 { 5649 struct qeth_dbf_entry *entry; 5650 debug_info_t *rc = NULL; 5651 5652 mutex_lock(&qeth_dbf_list_mutex); 5653 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5654 if (strcmp(entry->dbf_name, name) == 0) { 5655 rc = entry->dbf_info; 5656 break; 5657 } 5658 } 5659 mutex_unlock(&qeth_dbf_list_mutex); 5660 return rc; 5661 } 5662 5663 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5664 { 5665 struct qeth_dbf_entry *new_entry; 5666 5667 card->debug = debug_register(name, 2, 1, 8); 5668 if (!card->debug) { 5669 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5670 goto err; 5671 } 5672 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5673 goto err_dbg; 5674 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5675 if (!new_entry) 5676 goto err_dbg; 5677 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5678 new_entry->dbf_info = card->debug; 5679 mutex_lock(&qeth_dbf_list_mutex); 5680 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5681 mutex_unlock(&qeth_dbf_list_mutex); 5682 5683 return 0; 5684 5685 err_dbg: 5686 debug_unregister(card->debug); 5687 err: 5688 return -ENOMEM; 5689 } 5690 5691 static void qeth_clear_dbf_list(void) 5692 { 5693 struct qeth_dbf_entry *entry, *tmp; 5694 5695 mutex_lock(&qeth_dbf_list_mutex); 5696 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5697 list_del(&entry->dbf_list); 5698 debug_unregister(entry->dbf_info); 5699 kfree(entry); 5700 } 5701 mutex_unlock(&qeth_dbf_list_mutex); 5702 } 5703 5704 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5705 { 5706 struct qeth_card *card; 5707 struct device *dev; 5708 int rc; 5709 enum qeth_discipline_id enforced_disc; 5710 unsigned long flags; 5711 char dbf_name[DBF_NAME_LEN]; 5712 5713 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5714 5715 dev = &gdev->dev; 5716 if (!get_device(dev)) 5717 return -ENODEV; 5718 5719 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5720 5721 card = qeth_alloc_card(); 5722 if (!card) { 5723 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5724 rc = -ENOMEM; 5725 goto err_dev; 5726 } 5727 5728 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5729 dev_name(&gdev->dev)); 5730 card->debug = qeth_get_dbf_entry(dbf_name); 5731 if (!card->debug) { 5732 rc = qeth_add_dbf_entry(card, dbf_name); 5733 if (rc) 5734 goto err_card; 5735 } 5736 5737 card->read.ccwdev = gdev->cdev[0]; 5738 card->write.ccwdev = gdev->cdev[1]; 5739 card->data.ccwdev = gdev->cdev[2]; 5740 dev_set_drvdata(&gdev->dev, card); 5741 card->gdev = gdev; 5742 gdev->cdev[0]->handler = qeth_irq; 5743 gdev->cdev[1]->handler = qeth_irq; 5744 gdev->cdev[2]->handler = qeth_irq; 5745 5746 qeth_determine_card_type(card); 5747 rc = qeth_setup_card(card); 5748 if (rc) { 5749 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5750 goto err_card; 5751 } 5752 5753 qeth_determine_capabilities(card); 5754 enforced_disc = qeth_enforce_discipline(card); 5755 switch (enforced_disc) { 5756 case QETH_DISCIPLINE_UNDETERMINED: 5757 gdev->dev.type = &qeth_generic_devtype; 5758 break; 5759 default: 5760 card->info.layer_enforced = true; 5761 rc = qeth_core_load_discipline(card, enforced_disc); 5762 if (rc) 5763 goto err_card; 5764 5765 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5766 ? card->discipline->devtype 5767 : &qeth_osn_devtype; 5768 rc = card->discipline->setup(card->gdev); 5769 if (rc) 5770 goto err_disc; 5771 break; 5772 } 5773 5774 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5775 list_add_tail(&card->list, &qeth_core_card_list.list); 5776 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5777 return 0; 5778 5779 err_disc: 5780 qeth_core_free_discipline(card); 5781 err_card: 5782 qeth_core_free_card(card); 5783 err_dev: 5784 put_device(dev); 5785 return rc; 5786 } 5787 5788 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5789 { 5790 unsigned long flags; 5791 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5792 5793 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5794 5795 if (card->discipline) { 5796 card->discipline->remove(gdev); 5797 qeth_core_free_discipline(card); 5798 } 5799 5800 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5801 list_del(&card->list); 5802 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5803 qeth_core_free_card(card); 5804 dev_set_drvdata(&gdev->dev, NULL); 5805 put_device(&gdev->dev); 5806 return; 5807 } 5808 5809 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5810 { 5811 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5812 int rc = 0; 5813 enum qeth_discipline_id def_discipline; 5814 5815 if (!card->discipline) { 5816 if (card->info.type == QETH_CARD_TYPE_IQD) 5817 def_discipline = QETH_DISCIPLINE_LAYER3; 5818 else 5819 def_discipline = QETH_DISCIPLINE_LAYER2; 5820 rc = qeth_core_load_discipline(card, def_discipline); 5821 if (rc) 5822 goto err; 5823 rc = card->discipline->setup(card->gdev); 5824 if (rc) { 5825 qeth_core_free_discipline(card); 5826 goto err; 5827 } 5828 } 5829 rc = card->discipline->set_online(gdev); 5830 err: 5831 return rc; 5832 } 5833 5834 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5835 { 5836 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5837 return card->discipline->set_offline(gdev); 5838 } 5839 5840 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5841 { 5842 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5843 qeth_set_allowed_threads(card, 0, 1); 5844 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5845 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5846 qeth_qdio_clear_card(card, 0); 5847 qeth_clear_qdio_buffers(card); 5848 qdio_free(CARD_DDEV(card)); 5849 } 5850 5851 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5852 { 5853 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5854 if (card->discipline && card->discipline->freeze) 5855 return card->discipline->freeze(gdev); 5856 return 0; 5857 } 5858 5859 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5860 { 5861 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5862 if (card->discipline && card->discipline->thaw) 5863 return card->discipline->thaw(gdev); 5864 return 0; 5865 } 5866 5867 static int qeth_core_restore(struct ccwgroup_device *gdev) 5868 { 5869 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5870 if (card->discipline && card->discipline->restore) 5871 return card->discipline->restore(gdev); 5872 return 0; 5873 } 5874 5875 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5876 .driver = { 5877 .owner = THIS_MODULE, 5878 .name = "qeth", 5879 }, 5880 .ccw_driver = &qeth_ccw_driver, 5881 .setup = qeth_core_probe_device, 5882 .remove = qeth_core_remove_device, 5883 .set_online = qeth_core_set_online, 5884 .set_offline = qeth_core_set_offline, 5885 .shutdown = qeth_core_shutdown, 5886 .prepare = NULL, 5887 .complete = NULL, 5888 .freeze = qeth_core_freeze, 5889 .thaw = qeth_core_thaw, 5890 .restore = qeth_core_restore, 5891 }; 5892 5893 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5894 size_t count) 5895 { 5896 int err; 5897 5898 err = ccwgroup_create_dev(qeth_core_root_dev, 5899 &qeth_core_ccwgroup_driver, 3, buf); 5900 5901 return err ? err : count; 5902 } 5903 static DRIVER_ATTR_WO(group); 5904 5905 static struct attribute *qeth_drv_attrs[] = { 5906 &driver_attr_group.attr, 5907 NULL, 5908 }; 5909 static struct attribute_group qeth_drv_attr_group = { 5910 .attrs = qeth_drv_attrs, 5911 }; 5912 static const struct attribute_group *qeth_drv_attr_groups[] = { 5913 &qeth_drv_attr_group, 5914 NULL, 5915 }; 5916 5917 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5918 { 5919 struct qeth_card *card = dev->ml_priv; 5920 struct mii_ioctl_data *mii_data; 5921 int rc = 0; 5922 5923 if (!card) 5924 return -ENODEV; 5925 5926 if (!qeth_card_hw_is_reachable(card)) 5927 return -ENODEV; 5928 5929 if (card->info.type == QETH_CARD_TYPE_OSN) 5930 return -EPERM; 5931 5932 switch (cmd) { 5933 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5934 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5935 break; 5936 case SIOC_QETH_GET_CARD_TYPE: 5937 if ((card->info.type == QETH_CARD_TYPE_OSD || 5938 card->info.type == QETH_CARD_TYPE_OSM || 5939 card->info.type == QETH_CARD_TYPE_OSX) && 5940 !card->info.guestlan) 5941 return 1; 5942 else 5943 return 0; 5944 case SIOCGMIIPHY: 5945 mii_data = if_mii(rq); 5946 mii_data->phy_id = 0; 5947 break; 5948 case SIOCGMIIREG: 5949 mii_data = if_mii(rq); 5950 if (mii_data->phy_id != 0) 5951 rc = -EINVAL; 5952 else 5953 mii_data->val_out = qeth_mdio_read(dev, 5954 mii_data->phy_id, mii_data->reg_num); 5955 break; 5956 case SIOC_QETH_QUERY_OAT: 5957 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5958 break; 5959 default: 5960 if (card->discipline->do_ioctl) 5961 rc = card->discipline->do_ioctl(dev, rq, cmd); 5962 else 5963 rc = -EOPNOTSUPP; 5964 } 5965 if (rc) 5966 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5967 return rc; 5968 } 5969 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5970 5971 static struct { 5972 const char str[ETH_GSTRING_LEN]; 5973 } qeth_ethtool_stats_keys[] = { 5974 /* 0 */{"rx skbs"}, 5975 {"rx buffers"}, 5976 {"tx skbs"}, 5977 {"tx buffers"}, 5978 {"tx skbs no packing"}, 5979 {"tx buffers no packing"}, 5980 {"tx skbs packing"}, 5981 {"tx buffers packing"}, 5982 {"tx sg skbs"}, 5983 {"tx sg frags"}, 5984 /* 10 */{"rx sg skbs"}, 5985 {"rx sg frags"}, 5986 {"rx sg page allocs"}, 5987 {"tx large kbytes"}, 5988 {"tx large count"}, 5989 {"tx pk state ch n->p"}, 5990 {"tx pk state ch p->n"}, 5991 {"tx pk watermark low"}, 5992 {"tx pk watermark high"}, 5993 {"queue 0 buffer usage"}, 5994 /* 20 */{"queue 1 buffer usage"}, 5995 {"queue 2 buffer usage"}, 5996 {"queue 3 buffer usage"}, 5997 {"rx poll time"}, 5998 {"rx poll count"}, 5999 {"rx do_QDIO time"}, 6000 {"rx do_QDIO count"}, 6001 {"tx handler time"}, 6002 {"tx handler count"}, 6003 {"tx time"}, 6004 /* 30 */{"tx count"}, 6005 {"tx do_QDIO time"}, 6006 {"tx do_QDIO count"}, 6007 {"tx csum"}, 6008 {"tx lin"}, 6009 {"tx linfail"}, 6010 {"cq handler count"}, 6011 {"cq handler time"} 6012 }; 6013 6014 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 6015 { 6016 switch (stringset) { 6017 case ETH_SS_STATS: 6018 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 6019 default: 6020 return -EINVAL; 6021 } 6022 } 6023 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 6024 6025 void qeth_core_get_ethtool_stats(struct net_device *dev, 6026 struct ethtool_stats *stats, u64 *data) 6027 { 6028 struct qeth_card *card = dev->ml_priv; 6029 data[0] = card->stats.rx_packets - 6030 card->perf_stats.initial_rx_packets; 6031 data[1] = card->perf_stats.bufs_rec; 6032 data[2] = card->stats.tx_packets - 6033 card->perf_stats.initial_tx_packets; 6034 data[3] = card->perf_stats.bufs_sent; 6035 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 6036 - card->perf_stats.skbs_sent_pack; 6037 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 6038 data[6] = card->perf_stats.skbs_sent_pack; 6039 data[7] = card->perf_stats.bufs_sent_pack; 6040 data[8] = card->perf_stats.sg_skbs_sent; 6041 data[9] = card->perf_stats.sg_frags_sent; 6042 data[10] = card->perf_stats.sg_skbs_rx; 6043 data[11] = card->perf_stats.sg_frags_rx; 6044 data[12] = card->perf_stats.sg_alloc_page_rx; 6045 data[13] = (card->perf_stats.large_send_bytes >> 10); 6046 data[14] = card->perf_stats.large_send_cnt; 6047 data[15] = card->perf_stats.sc_dp_p; 6048 data[16] = card->perf_stats.sc_p_dp; 6049 data[17] = QETH_LOW_WATERMARK_PACK; 6050 data[18] = QETH_HIGH_WATERMARK_PACK; 6051 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 6052 data[20] = (card->qdio.no_out_queues > 1) ? 6053 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 6054 data[21] = (card->qdio.no_out_queues > 2) ? 6055 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6056 data[22] = (card->qdio.no_out_queues > 3) ? 6057 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6058 data[23] = card->perf_stats.inbound_time; 6059 data[24] = card->perf_stats.inbound_cnt; 6060 data[25] = card->perf_stats.inbound_do_qdio_time; 6061 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6062 data[27] = card->perf_stats.outbound_handler_time; 6063 data[28] = card->perf_stats.outbound_handler_cnt; 6064 data[29] = card->perf_stats.outbound_time; 6065 data[30] = card->perf_stats.outbound_cnt; 6066 data[31] = card->perf_stats.outbound_do_qdio_time; 6067 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6068 data[33] = card->perf_stats.tx_csum; 6069 data[34] = card->perf_stats.tx_lin; 6070 data[35] = card->perf_stats.tx_linfail; 6071 data[36] = card->perf_stats.cq_cnt; 6072 data[37] = card->perf_stats.cq_time; 6073 } 6074 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6075 6076 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6077 { 6078 switch (stringset) { 6079 case ETH_SS_STATS: 6080 memcpy(data, &qeth_ethtool_stats_keys, 6081 sizeof(qeth_ethtool_stats_keys)); 6082 break; 6083 default: 6084 WARN_ON(1); 6085 break; 6086 } 6087 } 6088 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6089 6090 void qeth_core_get_drvinfo(struct net_device *dev, 6091 struct ethtool_drvinfo *info) 6092 { 6093 struct qeth_card *card = dev->ml_priv; 6094 6095 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6096 sizeof(info->driver)); 6097 strlcpy(info->version, "1.0", sizeof(info->version)); 6098 strlcpy(info->fw_version, card->info.mcl_level, 6099 sizeof(info->fw_version)); 6100 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6101 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6102 } 6103 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6104 6105 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6106 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6107 /* Always advertise and support all speeds up to specified, and only one */ 6108 /* specified port type. */ 6109 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6110 int maxspeed, int porttype) 6111 { 6112 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6113 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6114 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6115 6116 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6117 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6118 6119 switch (porttype) { 6120 case PORT_TP: 6121 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6122 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6123 break; 6124 case PORT_FIBRE: 6125 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6126 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6127 break; 6128 default: 6129 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6130 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6131 WARN_ON_ONCE(1); 6132 } 6133 6134 /* fallthrough from high to low, to select all legal speeds: */ 6135 switch (maxspeed) { 6136 case SPEED_10000: 6137 ethtool_link_ksettings_add_link_mode(cmd, supported, 6138 10000baseT_Full); 6139 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6140 10000baseT_Full); 6141 case SPEED_1000: 6142 ethtool_link_ksettings_add_link_mode(cmd, supported, 6143 1000baseT_Full); 6144 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6145 1000baseT_Full); 6146 ethtool_link_ksettings_add_link_mode(cmd, supported, 6147 1000baseT_Half); 6148 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6149 1000baseT_Half); 6150 case SPEED_100: 6151 ethtool_link_ksettings_add_link_mode(cmd, supported, 6152 100baseT_Full); 6153 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6154 100baseT_Full); 6155 ethtool_link_ksettings_add_link_mode(cmd, supported, 6156 100baseT_Half); 6157 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6158 100baseT_Half); 6159 case SPEED_10: 6160 ethtool_link_ksettings_add_link_mode(cmd, supported, 6161 10baseT_Full); 6162 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6163 10baseT_Full); 6164 ethtool_link_ksettings_add_link_mode(cmd, supported, 6165 10baseT_Half); 6166 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6167 10baseT_Half); 6168 /* end fallthrough */ 6169 break; 6170 default: 6171 ethtool_link_ksettings_add_link_mode(cmd, supported, 6172 10baseT_Full); 6173 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6174 10baseT_Full); 6175 ethtool_link_ksettings_add_link_mode(cmd, supported, 6176 10baseT_Half); 6177 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6178 10baseT_Half); 6179 WARN_ON_ONCE(1); 6180 } 6181 } 6182 6183 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6184 struct ethtool_link_ksettings *cmd) 6185 { 6186 struct qeth_card *card = netdev->ml_priv; 6187 enum qeth_link_types link_type; 6188 struct carrier_info carrier_info; 6189 int rc; 6190 6191 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6192 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6193 else 6194 link_type = card->info.link_type; 6195 6196 cmd->base.duplex = DUPLEX_FULL; 6197 cmd->base.autoneg = AUTONEG_ENABLE; 6198 cmd->base.phy_address = 0; 6199 cmd->base.mdio_support = 0; 6200 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6201 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6202 6203 switch (link_type) { 6204 case QETH_LINK_TYPE_FAST_ETH: 6205 case QETH_LINK_TYPE_LANE_ETH100: 6206 cmd->base.speed = SPEED_100; 6207 cmd->base.port = PORT_TP; 6208 break; 6209 case QETH_LINK_TYPE_GBIT_ETH: 6210 case QETH_LINK_TYPE_LANE_ETH1000: 6211 cmd->base.speed = SPEED_1000; 6212 cmd->base.port = PORT_FIBRE; 6213 break; 6214 case QETH_LINK_TYPE_10GBIT_ETH: 6215 cmd->base.speed = SPEED_10000; 6216 cmd->base.port = PORT_FIBRE; 6217 break; 6218 default: 6219 cmd->base.speed = SPEED_10; 6220 cmd->base.port = PORT_TP; 6221 } 6222 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6223 6224 /* Check if we can obtain more accurate information. */ 6225 /* If QUERY_CARD_INFO command is not supported or fails, */ 6226 /* just return the heuristics that was filled above. */ 6227 if (!qeth_card_hw_is_reachable(card)) 6228 return -ENODEV; 6229 rc = qeth_query_card_info(card, &carrier_info); 6230 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6231 return 0; 6232 if (rc) /* report error from the hardware operation */ 6233 return rc; 6234 /* on success, fill in the information got from the hardware */ 6235 6236 netdev_dbg(netdev, 6237 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6238 carrier_info.card_type, 6239 carrier_info.port_mode, 6240 carrier_info.port_speed); 6241 6242 /* Update attributes for which we've obtained more authoritative */ 6243 /* information, leave the rest the way they where filled above. */ 6244 switch (carrier_info.card_type) { 6245 case CARD_INFO_TYPE_1G_COPPER_A: 6246 case CARD_INFO_TYPE_1G_COPPER_B: 6247 cmd->base.port = PORT_TP; 6248 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6249 break; 6250 case CARD_INFO_TYPE_1G_FIBRE_A: 6251 case CARD_INFO_TYPE_1G_FIBRE_B: 6252 cmd->base.port = PORT_FIBRE; 6253 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6254 break; 6255 case CARD_INFO_TYPE_10G_FIBRE_A: 6256 case CARD_INFO_TYPE_10G_FIBRE_B: 6257 cmd->base.port = PORT_FIBRE; 6258 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6259 break; 6260 } 6261 6262 switch (carrier_info.port_mode) { 6263 case CARD_INFO_PORTM_FULLDUPLEX: 6264 cmd->base.duplex = DUPLEX_FULL; 6265 break; 6266 case CARD_INFO_PORTM_HALFDUPLEX: 6267 cmd->base.duplex = DUPLEX_HALF; 6268 break; 6269 } 6270 6271 switch (carrier_info.port_speed) { 6272 case CARD_INFO_PORTS_10M: 6273 cmd->base.speed = SPEED_10; 6274 break; 6275 case CARD_INFO_PORTS_100M: 6276 cmd->base.speed = SPEED_100; 6277 break; 6278 case CARD_INFO_PORTS_1G: 6279 cmd->base.speed = SPEED_1000; 6280 break; 6281 case CARD_INFO_PORTS_10G: 6282 cmd->base.speed = SPEED_10000; 6283 break; 6284 } 6285 6286 return 0; 6287 } 6288 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6289 6290 /* Callback to handle checksum offload command reply from OSA card. 6291 * Verify that required features have been enabled on the card. 6292 * Return error in hdr->return_code as this value is checked by caller. 6293 * 6294 * Always returns zero to indicate no further messages from the OSA card. 6295 */ 6296 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6297 struct qeth_reply *reply, 6298 unsigned long data) 6299 { 6300 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6301 struct qeth_checksum_cmd *chksum_cb = 6302 (struct qeth_checksum_cmd *)reply->param; 6303 6304 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6305 if (qeth_setassparms_inspect_rc(cmd)) 6306 return 0; 6307 6308 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6309 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6310 chksum_cb->supported = 6311 cmd->data.setassparms.data.chksum.supported; 6312 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6313 } 6314 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6315 chksum_cb->supported = 6316 cmd->data.setassparms.data.chksum.supported; 6317 chksum_cb->enabled = 6318 cmd->data.setassparms.data.chksum.enabled; 6319 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6320 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6321 } 6322 return 0; 6323 } 6324 6325 /* Send command to OSA card and check results. */ 6326 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6327 enum qeth_ipa_funcs ipa_func, 6328 __u16 cmd_code, long data, 6329 struct qeth_checksum_cmd *chksum_cb) 6330 { 6331 struct qeth_cmd_buffer *iob; 6332 int rc = -ENOMEM; 6333 6334 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6335 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6336 sizeof(__u32), QETH_PROT_IPV4); 6337 if (iob) 6338 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6339 qeth_ipa_checksum_run_cmd_cb, 6340 chksum_cb); 6341 return rc; 6342 } 6343 6344 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6345 { 6346 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR | 6347 QETH_IPA_CHECKSUM_UDP | 6348 QETH_IPA_CHECKSUM_TCP; 6349 struct qeth_checksum_cmd chksum_cb; 6350 int rc; 6351 6352 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6353 &chksum_cb); 6354 if (!rc) { 6355 if ((required_features & chksum_cb.supported) != 6356 required_features) 6357 rc = -EIO; 6358 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6359 cstype == IPA_INBOUND_CHECKSUM) 6360 dev_warn(&card->gdev->dev, 6361 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6362 QETH_CARD_IFNAME(card)); 6363 } 6364 if (rc) { 6365 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6366 dev_warn(&card->gdev->dev, 6367 "Starting HW checksumming for %s failed, using SW checksumming\n", 6368 QETH_CARD_IFNAME(card)); 6369 return rc; 6370 } 6371 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6372 chksum_cb.supported, &chksum_cb); 6373 if (!rc) { 6374 if ((required_features & chksum_cb.enabled) != 6375 required_features) 6376 rc = -EIO; 6377 } 6378 if (rc) { 6379 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6380 dev_warn(&card->gdev->dev, 6381 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6382 QETH_CARD_IFNAME(card)); 6383 return rc; 6384 } 6385 6386 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6387 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6388 return 0; 6389 } 6390 6391 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6392 { 6393 int rc = (on) ? qeth_send_checksum_on(card, cstype) 6394 : qeth_send_simple_setassparms(card, cstype, 6395 IPA_CMD_ASS_STOP, 0); 6396 return rc ? -EIO : 0; 6397 } 6398 6399 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6400 { 6401 int rc; 6402 6403 QETH_CARD_TEXT(card, 3, "sttso"); 6404 6405 if (on) { 6406 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6407 IPA_CMD_ASS_START, 0); 6408 if (rc) { 6409 dev_warn(&card->gdev->dev, 6410 "Starting outbound TCP segmentation offload for %s failed\n", 6411 QETH_CARD_IFNAME(card)); 6412 return -EIO; 6413 } 6414 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6415 } else { 6416 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6417 IPA_CMD_ASS_STOP, 0); 6418 } 6419 return rc; 6420 } 6421 6422 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO) 6423 6424 /** 6425 * qeth_recover_features() - Restore device features after recovery 6426 * @dev: the recovering net_device 6427 * 6428 * Caller must hold rtnl lock. 6429 */ 6430 void qeth_recover_features(struct net_device *dev) 6431 { 6432 netdev_features_t features = dev->features; 6433 struct qeth_card *card = dev->ml_priv; 6434 6435 /* force-off any feature that needs an IPA sequence. 6436 * netdev_update_features() will restart them. 6437 */ 6438 dev->features &= ~QETH_HW_FEATURES; 6439 netdev_update_features(dev); 6440 6441 if (features == dev->features) 6442 return; 6443 dev_warn(&card->gdev->dev, 6444 "Device recovery failed to restore all offload features\n"); 6445 } 6446 EXPORT_SYMBOL_GPL(qeth_recover_features); 6447 6448 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6449 { 6450 struct qeth_card *card = dev->ml_priv; 6451 netdev_features_t changed = dev->features ^ features; 6452 int rc = 0; 6453 6454 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6455 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6456 6457 if ((changed & NETIF_F_IP_CSUM)) { 6458 rc = qeth_set_ipa_csum(card, 6459 features & NETIF_F_IP_CSUM ? 1 : 0, 6460 IPA_OUTBOUND_CHECKSUM); 6461 if (rc) 6462 changed ^= NETIF_F_IP_CSUM; 6463 } 6464 if ((changed & NETIF_F_RXCSUM)) { 6465 rc = qeth_set_ipa_csum(card, 6466 features & NETIF_F_RXCSUM ? 1 : 0, 6467 IPA_INBOUND_CHECKSUM); 6468 if (rc) 6469 changed ^= NETIF_F_RXCSUM; 6470 } 6471 if ((changed & NETIF_F_TSO)) { 6472 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6473 if (rc) 6474 changed ^= NETIF_F_TSO; 6475 } 6476 6477 /* everything changed successfully? */ 6478 if ((dev->features ^ features) == changed) 6479 return 0; 6480 /* something went wrong. save changed features and return error */ 6481 dev->features ^= changed; 6482 return -EIO; 6483 } 6484 EXPORT_SYMBOL_GPL(qeth_set_features); 6485 6486 netdev_features_t qeth_fix_features(struct net_device *dev, 6487 netdev_features_t features) 6488 { 6489 struct qeth_card *card = dev->ml_priv; 6490 6491 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6492 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6493 features &= ~NETIF_F_IP_CSUM; 6494 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6495 features &= ~NETIF_F_RXCSUM; 6496 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6497 features &= ~NETIF_F_TSO; 6498 /* if the card isn't up, remove features that require hw changes */ 6499 if (card->state == CARD_STATE_DOWN || 6500 card->state == CARD_STATE_RECOVER) 6501 features &= ~QETH_HW_FEATURES; 6502 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6503 return features; 6504 } 6505 EXPORT_SYMBOL_GPL(qeth_fix_features); 6506 6507 netdev_features_t qeth_features_check(struct sk_buff *skb, 6508 struct net_device *dev, 6509 netdev_features_t features) 6510 { 6511 /* GSO segmentation builds skbs with 6512 * a (small) linear part for the headers, and 6513 * page frags for the data. 6514 * Compared to a linear skb, the header-only part consumes an 6515 * additional buffer element. This reduces buffer utilization, and 6516 * hurts throughput. So compress small segments into one element. 6517 */ 6518 if (netif_needs_gso(skb, features)) { 6519 /* match skb_segment(): */ 6520 unsigned int doffset = skb->data - skb_mac_header(skb); 6521 unsigned int hsize = skb_shinfo(skb)->gso_size; 6522 unsigned int hroom = skb_headroom(skb); 6523 6524 /* linearize only if resulting skb allocations are order-0: */ 6525 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6526 features &= ~NETIF_F_SG; 6527 } 6528 6529 return vlan_features_check(skb, features); 6530 } 6531 EXPORT_SYMBOL_GPL(qeth_features_check); 6532 6533 static int __init qeth_core_init(void) 6534 { 6535 int rc; 6536 6537 pr_info("loading core functions\n"); 6538 INIT_LIST_HEAD(&qeth_core_card_list.list); 6539 INIT_LIST_HEAD(&qeth_dbf_list); 6540 rwlock_init(&qeth_core_card_list.rwlock); 6541 mutex_init(&qeth_mod_mutex); 6542 6543 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6544 if (!qeth_wq) { 6545 rc = -ENOMEM; 6546 goto out_err; 6547 } 6548 6549 rc = qeth_register_dbf_views(); 6550 if (rc) 6551 goto dbf_err; 6552 qeth_core_root_dev = root_device_register("qeth"); 6553 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6554 if (rc) 6555 goto register_err; 6556 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6557 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6558 if (!qeth_core_header_cache) { 6559 rc = -ENOMEM; 6560 goto slab_err; 6561 } 6562 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6563 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6564 if (!qeth_qdio_outbuf_cache) { 6565 rc = -ENOMEM; 6566 goto cqslab_err; 6567 } 6568 rc = ccw_driver_register(&qeth_ccw_driver); 6569 if (rc) 6570 goto ccw_err; 6571 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6572 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6573 if (rc) 6574 goto ccwgroup_err; 6575 6576 return 0; 6577 6578 ccwgroup_err: 6579 ccw_driver_unregister(&qeth_ccw_driver); 6580 ccw_err: 6581 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6582 cqslab_err: 6583 kmem_cache_destroy(qeth_core_header_cache); 6584 slab_err: 6585 root_device_unregister(qeth_core_root_dev); 6586 register_err: 6587 qeth_unregister_dbf_views(); 6588 dbf_err: 6589 destroy_workqueue(qeth_wq); 6590 out_err: 6591 pr_err("Initializing the qeth device driver failed\n"); 6592 return rc; 6593 } 6594 6595 static void __exit qeth_core_exit(void) 6596 { 6597 qeth_clear_dbf_list(); 6598 destroy_workqueue(qeth_wq); 6599 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6600 ccw_driver_unregister(&qeth_ccw_driver); 6601 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6602 kmem_cache_destroy(qeth_core_header_cache); 6603 root_device_unregister(qeth_core_root_dev); 6604 qeth_unregister_dbf_views(); 6605 pr_info("core functions removed\n"); 6606 } 6607 6608 module_init(qeth_core_init); 6609 module_exit(qeth_core_exit); 6610 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6611 MODULE_DESCRIPTION("qeth core functions"); 6612 MODULE_LICENSE("GPL"); 6613