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 atomic_set(&card->write.irq_pending, 0); 710 } 711 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 712 713 static int qeth_check_idx_response(struct qeth_card *card, 714 unsigned char *buffer) 715 { 716 if (!buffer) 717 return 0; 718 719 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 720 if ((buffer[2] & 0xc0) == 0xc0) { 721 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n", 722 buffer[4]); 723 QETH_CARD_TEXT(card, 2, "ckidxres"); 724 QETH_CARD_TEXT(card, 2, " idxterm"); 725 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 726 if (buffer[4] == 0xf6) { 727 dev_err(&card->gdev->dev, 728 "The qeth device is not configured " 729 "for the OSI layer required by z/VM\n"); 730 return -EPERM; 731 } 732 return -EIO; 733 } 734 return 0; 735 } 736 737 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 738 { 739 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 740 dev_get_drvdata(&cdev->dev))->dev); 741 return card; 742 } 743 744 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 745 __u32 len) 746 { 747 struct qeth_card *card; 748 749 card = CARD_FROM_CDEV(channel->ccwdev); 750 QETH_CARD_TEXT(card, 4, "setupccw"); 751 if (channel == &card->read) 752 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 753 else 754 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 755 channel->ccw.count = len; 756 channel->ccw.cda = (__u32) __pa(iob); 757 } 758 759 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 760 { 761 __u8 index; 762 763 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 764 index = channel->io_buf_no; 765 do { 766 if (channel->iob[index].state == BUF_STATE_FREE) { 767 channel->iob[index].state = BUF_STATE_LOCKED; 768 channel->io_buf_no = (channel->io_buf_no + 1) % 769 QETH_CMD_BUFFER_NO; 770 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 771 return channel->iob + index; 772 } 773 index = (index + 1) % QETH_CMD_BUFFER_NO; 774 } while (index != channel->io_buf_no); 775 776 return NULL; 777 } 778 779 void qeth_release_buffer(struct qeth_channel *channel, 780 struct qeth_cmd_buffer *iob) 781 { 782 unsigned long flags; 783 784 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 785 spin_lock_irqsave(&channel->iob_lock, flags); 786 memset(iob->data, 0, QETH_BUFSIZE); 787 iob->state = BUF_STATE_FREE; 788 iob->callback = qeth_send_control_data_cb; 789 iob->rc = 0; 790 spin_unlock_irqrestore(&channel->iob_lock, flags); 791 wake_up(&channel->wait_q); 792 } 793 EXPORT_SYMBOL_GPL(qeth_release_buffer); 794 795 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 796 { 797 struct qeth_cmd_buffer *buffer = NULL; 798 unsigned long flags; 799 800 spin_lock_irqsave(&channel->iob_lock, flags); 801 buffer = __qeth_get_buffer(channel); 802 spin_unlock_irqrestore(&channel->iob_lock, flags); 803 return buffer; 804 } 805 806 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 807 { 808 struct qeth_cmd_buffer *buffer; 809 wait_event(channel->wait_q, 810 ((buffer = qeth_get_buffer(channel)) != NULL)); 811 return buffer; 812 } 813 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 814 815 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 816 { 817 int cnt; 818 819 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 820 qeth_release_buffer(channel, &channel->iob[cnt]); 821 channel->buf_no = 0; 822 channel->io_buf_no = 0; 823 } 824 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 825 826 static void qeth_send_control_data_cb(struct qeth_channel *channel, 827 struct qeth_cmd_buffer *iob) 828 { 829 struct qeth_card *card; 830 struct qeth_reply *reply, *r; 831 struct qeth_ipa_cmd *cmd; 832 unsigned long flags; 833 int keep_reply; 834 int rc = 0; 835 836 card = CARD_FROM_CDEV(channel->ccwdev); 837 QETH_CARD_TEXT(card, 4, "sndctlcb"); 838 rc = qeth_check_idx_response(card, iob->data); 839 switch (rc) { 840 case 0: 841 break; 842 case -EIO: 843 qeth_clear_ipacmd_list(card); 844 qeth_schedule_recovery(card); 845 /* fall through */ 846 default: 847 goto out; 848 } 849 850 cmd = qeth_check_ipa_data(card, iob); 851 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 852 goto out; 853 /*in case of OSN : check if cmd is set */ 854 if (card->info.type == QETH_CARD_TYPE_OSN && 855 cmd && 856 cmd->hdr.command != IPA_CMD_STARTLAN && 857 card->osn_info.assist_cb != NULL) { 858 card->osn_info.assist_cb(card->dev, cmd); 859 goto out; 860 } 861 862 spin_lock_irqsave(&card->lock, flags); 863 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 864 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 865 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 866 qeth_get_reply(reply); 867 list_del_init(&reply->list); 868 spin_unlock_irqrestore(&card->lock, flags); 869 keep_reply = 0; 870 if (reply->callback != NULL) { 871 if (cmd) { 872 reply->offset = (__u16)((char *)cmd - 873 (char *)iob->data); 874 keep_reply = reply->callback(card, 875 reply, 876 (unsigned long)cmd); 877 } else 878 keep_reply = reply->callback(card, 879 reply, 880 (unsigned long)iob); 881 } 882 if (cmd) 883 reply->rc = (u16) cmd->hdr.return_code; 884 else if (iob->rc) 885 reply->rc = iob->rc; 886 if (keep_reply) { 887 spin_lock_irqsave(&card->lock, flags); 888 list_add_tail(&reply->list, 889 &card->cmd_waiter_list); 890 spin_unlock_irqrestore(&card->lock, flags); 891 } else { 892 atomic_inc(&reply->received); 893 wake_up(&reply->wait_q); 894 } 895 qeth_put_reply(reply); 896 goto out; 897 } 898 } 899 spin_unlock_irqrestore(&card->lock, flags); 900 out: 901 memcpy(&card->seqno.pdu_hdr_ack, 902 QETH_PDU_HEADER_SEQ_NO(iob->data), 903 QETH_SEQ_NO_LENGTH); 904 qeth_release_buffer(channel, iob); 905 } 906 907 static int qeth_setup_channel(struct qeth_channel *channel) 908 { 909 int cnt; 910 911 QETH_DBF_TEXT(SETUP, 2, "setupch"); 912 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 913 channel->iob[cnt].data = 914 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 915 if (channel->iob[cnt].data == NULL) 916 break; 917 channel->iob[cnt].state = BUF_STATE_FREE; 918 channel->iob[cnt].channel = channel; 919 channel->iob[cnt].callback = qeth_send_control_data_cb; 920 channel->iob[cnt].rc = 0; 921 } 922 if (cnt < QETH_CMD_BUFFER_NO) { 923 while (cnt-- > 0) 924 kfree(channel->iob[cnt].data); 925 return -ENOMEM; 926 } 927 channel->buf_no = 0; 928 channel->io_buf_no = 0; 929 atomic_set(&channel->irq_pending, 0); 930 spin_lock_init(&channel->iob_lock); 931 932 init_waitqueue_head(&channel->wait_q); 933 return 0; 934 } 935 936 static int qeth_set_thread_start_bit(struct qeth_card *card, 937 unsigned long thread) 938 { 939 unsigned long flags; 940 941 spin_lock_irqsave(&card->thread_mask_lock, flags); 942 if (!(card->thread_allowed_mask & thread) || 943 (card->thread_start_mask & thread)) { 944 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 945 return -EPERM; 946 } 947 card->thread_start_mask |= thread; 948 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 949 return 0; 950 } 951 952 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 953 { 954 unsigned long flags; 955 956 spin_lock_irqsave(&card->thread_mask_lock, flags); 957 card->thread_start_mask &= ~thread; 958 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 959 wake_up(&card->wait_q); 960 } 961 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 962 963 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 964 { 965 unsigned long flags; 966 967 spin_lock_irqsave(&card->thread_mask_lock, flags); 968 card->thread_running_mask &= ~thread; 969 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 970 wake_up_all(&card->wait_q); 971 } 972 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 973 974 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 975 { 976 unsigned long flags; 977 int rc = 0; 978 979 spin_lock_irqsave(&card->thread_mask_lock, flags); 980 if (card->thread_start_mask & thread) { 981 if ((card->thread_allowed_mask & thread) && 982 !(card->thread_running_mask & thread)) { 983 rc = 1; 984 card->thread_start_mask &= ~thread; 985 card->thread_running_mask |= thread; 986 } else 987 rc = -EPERM; 988 } 989 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 990 return rc; 991 } 992 993 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 994 { 995 int rc = 0; 996 997 wait_event(card->wait_q, 998 (rc = __qeth_do_run_thread(card, thread)) >= 0); 999 return rc; 1000 } 1001 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 1002 1003 void qeth_schedule_recovery(struct qeth_card *card) 1004 { 1005 QETH_CARD_TEXT(card, 2, "startrec"); 1006 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 1007 schedule_work(&card->kernel_thread_starter); 1008 } 1009 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 1010 1011 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 1012 { 1013 int dstat, cstat; 1014 char *sense; 1015 struct qeth_card *card; 1016 1017 sense = (char *) irb->ecw; 1018 cstat = irb->scsw.cmd.cstat; 1019 dstat = irb->scsw.cmd.dstat; 1020 card = CARD_FROM_CDEV(cdev); 1021 1022 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1023 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1024 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1025 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1026 dev_warn(&cdev->dev, "The qeth device driver " 1027 "failed to recover an error on the device\n"); 1028 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1029 dev_name(&cdev->dev), dstat, cstat); 1030 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1031 16, 1, irb, 64, 1); 1032 return 1; 1033 } 1034 1035 if (dstat & DEV_STAT_UNIT_CHECK) { 1036 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1037 SENSE_RESETTING_EVENT_FLAG) { 1038 QETH_CARD_TEXT(card, 2, "REVIND"); 1039 return 1; 1040 } 1041 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1042 SENSE_COMMAND_REJECT_FLAG) { 1043 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1044 return 1; 1045 } 1046 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1047 QETH_CARD_TEXT(card, 2, "AFFE"); 1048 return 1; 1049 } 1050 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1051 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1052 return 0; 1053 } 1054 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1055 return 1; 1056 } 1057 return 0; 1058 } 1059 1060 static long __qeth_check_irb_error(struct ccw_device *cdev, 1061 unsigned long intparm, struct irb *irb) 1062 { 1063 struct qeth_card *card; 1064 1065 card = CARD_FROM_CDEV(cdev); 1066 1067 if (!card || !IS_ERR(irb)) 1068 return 0; 1069 1070 switch (PTR_ERR(irb)) { 1071 case -EIO: 1072 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1073 dev_name(&cdev->dev)); 1074 QETH_CARD_TEXT(card, 2, "ckirberr"); 1075 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1076 break; 1077 case -ETIMEDOUT: 1078 dev_warn(&cdev->dev, "A hardware operation timed out" 1079 " on the device\n"); 1080 QETH_CARD_TEXT(card, 2, "ckirberr"); 1081 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1082 if (intparm == QETH_RCD_PARM) { 1083 if (card->data.ccwdev == cdev) { 1084 card->data.state = CH_STATE_DOWN; 1085 wake_up(&card->wait_q); 1086 } 1087 } 1088 break; 1089 default: 1090 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1091 dev_name(&cdev->dev), PTR_ERR(irb)); 1092 QETH_CARD_TEXT(card, 2, "ckirberr"); 1093 QETH_CARD_TEXT(card, 2, " rc???"); 1094 } 1095 return PTR_ERR(irb); 1096 } 1097 1098 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1099 struct irb *irb) 1100 { 1101 int rc; 1102 int cstat, dstat; 1103 struct qeth_cmd_buffer *buffer; 1104 struct qeth_channel *channel; 1105 struct qeth_card *card; 1106 struct qeth_cmd_buffer *iob; 1107 __u8 index; 1108 1109 if (__qeth_check_irb_error(cdev, intparm, irb)) 1110 return; 1111 cstat = irb->scsw.cmd.cstat; 1112 dstat = irb->scsw.cmd.dstat; 1113 1114 card = CARD_FROM_CDEV(cdev); 1115 if (!card) 1116 return; 1117 1118 QETH_CARD_TEXT(card, 5, "irq"); 1119 1120 if (card->read.ccwdev == cdev) { 1121 channel = &card->read; 1122 QETH_CARD_TEXT(card, 5, "read"); 1123 } else if (card->write.ccwdev == cdev) { 1124 channel = &card->write; 1125 QETH_CARD_TEXT(card, 5, "write"); 1126 } else { 1127 channel = &card->data; 1128 QETH_CARD_TEXT(card, 5, "data"); 1129 } 1130 atomic_set(&channel->irq_pending, 0); 1131 1132 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1133 channel->state = CH_STATE_STOPPED; 1134 1135 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1136 channel->state = CH_STATE_HALTED; 1137 1138 /*let's wake up immediately on data channel*/ 1139 if ((channel == &card->data) && (intparm != 0) && 1140 (intparm != QETH_RCD_PARM)) 1141 goto out; 1142 1143 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1144 QETH_CARD_TEXT(card, 6, "clrchpar"); 1145 /* we don't have to handle this further */ 1146 intparm = 0; 1147 } 1148 if (intparm == QETH_HALT_CHANNEL_PARM) { 1149 QETH_CARD_TEXT(card, 6, "hltchpar"); 1150 /* we don't have to handle this further */ 1151 intparm = 0; 1152 } 1153 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1154 (dstat & DEV_STAT_UNIT_CHECK) || 1155 (cstat)) { 1156 if (irb->esw.esw0.erw.cons) { 1157 dev_warn(&channel->ccwdev->dev, 1158 "The qeth device driver failed to recover " 1159 "an error on the device\n"); 1160 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1161 "0x%X dstat 0x%X\n", 1162 dev_name(&channel->ccwdev->dev), cstat, dstat); 1163 print_hex_dump(KERN_WARNING, "qeth: irb ", 1164 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1165 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1166 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1167 } 1168 if (intparm == QETH_RCD_PARM) { 1169 channel->state = CH_STATE_DOWN; 1170 goto out; 1171 } 1172 rc = qeth_get_problem(cdev, irb); 1173 if (rc) { 1174 card->read_or_write_problem = 1; 1175 qeth_clear_ipacmd_list(card); 1176 qeth_schedule_recovery(card); 1177 goto out; 1178 } 1179 } 1180 1181 if (intparm == QETH_RCD_PARM) { 1182 channel->state = CH_STATE_RCD_DONE; 1183 goto out; 1184 } 1185 if (intparm) { 1186 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1187 buffer->state = BUF_STATE_PROCESSED; 1188 } 1189 if (channel == &card->data) 1190 return; 1191 if (channel == &card->read && 1192 channel->state == CH_STATE_UP) 1193 __qeth_issue_next_read(card); 1194 1195 iob = channel->iob; 1196 index = channel->buf_no; 1197 while (iob[index].state == BUF_STATE_PROCESSED) { 1198 if (iob[index].callback != NULL) 1199 iob[index].callback(channel, iob + index); 1200 1201 index = (index + 1) % QETH_CMD_BUFFER_NO; 1202 } 1203 channel->buf_no = index; 1204 out: 1205 wake_up(&card->wait_q); 1206 return; 1207 } 1208 1209 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1210 struct qeth_qdio_out_buffer *buf, 1211 enum iucv_tx_notify notification) 1212 { 1213 struct sk_buff *skb; 1214 1215 if (skb_queue_empty(&buf->skb_list)) 1216 goto out; 1217 skb = skb_peek(&buf->skb_list); 1218 while (skb) { 1219 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1220 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1221 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1222 if (skb->sk) { 1223 struct iucv_sock *iucv = iucv_sk(skb->sk); 1224 iucv->sk_txnotify(skb, notification); 1225 } 1226 } 1227 if (skb_queue_is_last(&buf->skb_list, skb)) 1228 skb = NULL; 1229 else 1230 skb = skb_queue_next(&buf->skb_list, skb); 1231 } 1232 out: 1233 return; 1234 } 1235 1236 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1237 { 1238 struct sk_buff *skb; 1239 struct iucv_sock *iucv; 1240 int notify_general_error = 0; 1241 1242 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1243 notify_general_error = 1; 1244 1245 /* release may never happen from within CQ tasklet scope */ 1246 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1247 1248 skb = skb_dequeue(&buf->skb_list); 1249 while (skb) { 1250 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1251 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1252 if (notify_general_error && 1253 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1254 if (skb->sk) { 1255 iucv = iucv_sk(skb->sk); 1256 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1257 } 1258 } 1259 refcount_dec(&skb->users); 1260 dev_kfree_skb_any(skb); 1261 skb = skb_dequeue(&buf->skb_list); 1262 } 1263 } 1264 1265 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1266 struct qeth_qdio_out_buffer *buf, 1267 enum qeth_qdio_buffer_states newbufstate) 1268 { 1269 int i; 1270 1271 /* is PCI flag set on buffer? */ 1272 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1273 atomic_dec(&queue->set_pci_flags_count); 1274 1275 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1276 qeth_release_skbs(buf); 1277 } 1278 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1279 if (buf->buffer->element[i].addr && buf->is_header[i]) 1280 kmem_cache_free(qeth_core_header_cache, 1281 buf->buffer->element[i].addr); 1282 buf->is_header[i] = 0; 1283 buf->buffer->element[i].length = 0; 1284 buf->buffer->element[i].addr = NULL; 1285 buf->buffer->element[i].eflags = 0; 1286 buf->buffer->element[i].sflags = 0; 1287 } 1288 buf->buffer->element[15].eflags = 0; 1289 buf->buffer->element[15].sflags = 0; 1290 buf->next_element_to_fill = 0; 1291 atomic_set(&buf->state, newbufstate); 1292 } 1293 1294 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1295 { 1296 int j; 1297 1298 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1299 if (!q->bufs[j]) 1300 continue; 1301 qeth_cleanup_handled_pending(q, j, 1); 1302 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1303 if (free) { 1304 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1305 q->bufs[j] = NULL; 1306 } 1307 } 1308 } 1309 1310 void qeth_clear_qdio_buffers(struct qeth_card *card) 1311 { 1312 int i; 1313 1314 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1315 /* clear outbound buffers to free skbs */ 1316 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1317 if (card->qdio.out_qs[i]) { 1318 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1319 } 1320 } 1321 } 1322 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1323 1324 static void qeth_free_buffer_pool(struct qeth_card *card) 1325 { 1326 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1327 int i = 0; 1328 list_for_each_entry_safe(pool_entry, tmp, 1329 &card->qdio.init_pool.entry_list, init_list){ 1330 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1331 free_page((unsigned long)pool_entry->elements[i]); 1332 list_del(&pool_entry->init_list); 1333 kfree(pool_entry); 1334 } 1335 } 1336 1337 static void qeth_clean_channel(struct qeth_channel *channel) 1338 { 1339 int cnt; 1340 1341 QETH_DBF_TEXT(SETUP, 2, "freech"); 1342 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1343 kfree(channel->iob[cnt].data); 1344 } 1345 1346 static void qeth_set_single_write_queues(struct qeth_card *card) 1347 { 1348 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1349 (card->qdio.no_out_queues == 4)) 1350 qeth_free_qdio_buffers(card); 1351 1352 card->qdio.no_out_queues = 1; 1353 if (card->qdio.default_out_queue != 0) 1354 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1355 1356 card->qdio.default_out_queue = 0; 1357 } 1358 1359 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1360 { 1361 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1362 (card->qdio.no_out_queues == 1)) { 1363 qeth_free_qdio_buffers(card); 1364 card->qdio.default_out_queue = 2; 1365 } 1366 card->qdio.no_out_queues = 4; 1367 } 1368 1369 static void qeth_update_from_chp_desc(struct qeth_card *card) 1370 { 1371 struct ccw_device *ccwdev; 1372 struct channel_path_desc_fmt0 *chp_dsc; 1373 1374 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1375 1376 ccwdev = card->data.ccwdev; 1377 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1378 if (!chp_dsc) 1379 goto out; 1380 1381 card->info.func_level = 0x4100 + chp_dsc->desc; 1382 if (card->info.type == QETH_CARD_TYPE_IQD) 1383 goto out; 1384 1385 /* CHPP field bit 6 == 1 -> single queue */ 1386 if ((chp_dsc->chpp & 0x02) == 0x02) 1387 qeth_set_single_write_queues(card); 1388 else 1389 qeth_set_multiple_write_queues(card); 1390 out: 1391 kfree(chp_dsc); 1392 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1393 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1394 } 1395 1396 static void qeth_init_qdio_info(struct qeth_card *card) 1397 { 1398 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1399 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1400 /* inbound */ 1401 card->qdio.no_in_queues = 1; 1402 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1403 if (card->info.type == QETH_CARD_TYPE_IQD) 1404 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1405 else 1406 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1407 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1408 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1409 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1410 } 1411 1412 static void qeth_set_intial_options(struct qeth_card *card) 1413 { 1414 card->options.route4.type = NO_ROUTER; 1415 card->options.route6.type = NO_ROUTER; 1416 card->options.fake_broadcast = 0; 1417 card->options.performance_stats = 0; 1418 card->options.rx_sg_cb = QETH_RX_SG_CB; 1419 card->options.isolation = ISOLATION_MODE_NONE; 1420 card->options.cq = QETH_CQ_DISABLED; 1421 } 1422 1423 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1424 { 1425 unsigned long flags; 1426 int rc = 0; 1427 1428 spin_lock_irqsave(&card->thread_mask_lock, flags); 1429 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1430 (u8) card->thread_start_mask, 1431 (u8) card->thread_allowed_mask, 1432 (u8) card->thread_running_mask); 1433 rc = (card->thread_start_mask & thread); 1434 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1435 return rc; 1436 } 1437 1438 static void qeth_start_kernel_thread(struct work_struct *work) 1439 { 1440 struct task_struct *ts; 1441 struct qeth_card *card = container_of(work, struct qeth_card, 1442 kernel_thread_starter); 1443 QETH_CARD_TEXT(card , 2, "strthrd"); 1444 1445 if (card->read.state != CH_STATE_UP && 1446 card->write.state != CH_STATE_UP) 1447 return; 1448 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1449 ts = kthread_run(card->discipline->recover, (void *)card, 1450 "qeth_recover"); 1451 if (IS_ERR(ts)) { 1452 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1453 qeth_clear_thread_running_bit(card, 1454 QETH_RECOVER_THREAD); 1455 } 1456 } 1457 } 1458 1459 static void qeth_buffer_reclaim_work(struct work_struct *); 1460 static int qeth_setup_card(struct qeth_card *card) 1461 { 1462 1463 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1464 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1465 1466 card->read.state = CH_STATE_DOWN; 1467 card->write.state = CH_STATE_DOWN; 1468 card->data.state = CH_STATE_DOWN; 1469 card->state = CARD_STATE_DOWN; 1470 card->lan_online = 0; 1471 card->read_or_write_problem = 0; 1472 card->dev = NULL; 1473 spin_lock_init(&card->vlanlock); 1474 spin_lock_init(&card->mclock); 1475 spin_lock_init(&card->lock); 1476 spin_lock_init(&card->ip_lock); 1477 spin_lock_init(&card->thread_mask_lock); 1478 mutex_init(&card->conf_mutex); 1479 mutex_init(&card->discipline_mutex); 1480 card->thread_start_mask = 0; 1481 card->thread_allowed_mask = 0; 1482 card->thread_running_mask = 0; 1483 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1484 INIT_LIST_HEAD(&card->cmd_waiter_list); 1485 init_waitqueue_head(&card->wait_q); 1486 /* initial options */ 1487 qeth_set_intial_options(card); 1488 /* IP address takeover */ 1489 INIT_LIST_HEAD(&card->ipato.entries); 1490 card->ipato.enabled = false; 1491 card->ipato.invert4 = false; 1492 card->ipato.invert6 = false; 1493 /* init QDIO stuff */ 1494 qeth_init_qdio_info(card); 1495 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1496 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1497 return 0; 1498 } 1499 1500 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1501 { 1502 struct qeth_card *card = container_of(slr, struct qeth_card, 1503 qeth_service_level); 1504 if (card->info.mcl_level[0]) 1505 seq_printf(m, "qeth: %s firmware level %s\n", 1506 CARD_BUS_ID(card), card->info.mcl_level); 1507 } 1508 1509 static struct qeth_card *qeth_alloc_card(void) 1510 { 1511 struct qeth_card *card; 1512 1513 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1514 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1515 if (!card) 1516 goto out; 1517 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1518 if (qeth_setup_channel(&card->read)) 1519 goto out_ip; 1520 if (qeth_setup_channel(&card->write)) 1521 goto out_channel; 1522 card->options.layer2 = -1; 1523 card->qeth_service_level.seq_print = qeth_core_sl_print; 1524 register_service_level(&card->qeth_service_level); 1525 return card; 1526 1527 out_channel: 1528 qeth_clean_channel(&card->read); 1529 out_ip: 1530 kfree(card); 1531 out: 1532 return NULL; 1533 } 1534 1535 static void qeth_determine_card_type(struct qeth_card *card) 1536 { 1537 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1538 1539 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1540 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1541 card->info.type = CARD_RDEV(card)->id.driver_info; 1542 card->qdio.no_out_queues = QETH_MAX_QUEUES; 1543 if (card->info.type == QETH_CARD_TYPE_IQD) 1544 card->info.is_multicast_different = 0x0103; 1545 qeth_update_from_chp_desc(card); 1546 } 1547 1548 static int qeth_clear_channel(struct qeth_channel *channel) 1549 { 1550 unsigned long flags; 1551 struct qeth_card *card; 1552 int rc; 1553 1554 card = CARD_FROM_CDEV(channel->ccwdev); 1555 QETH_CARD_TEXT(card, 3, "clearch"); 1556 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1557 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1558 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1559 1560 if (rc) 1561 return rc; 1562 rc = wait_event_interruptible_timeout(card->wait_q, 1563 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1564 if (rc == -ERESTARTSYS) 1565 return rc; 1566 if (channel->state != CH_STATE_STOPPED) 1567 return -ETIME; 1568 channel->state = CH_STATE_DOWN; 1569 return 0; 1570 } 1571 1572 static int qeth_halt_channel(struct qeth_channel *channel) 1573 { 1574 unsigned long flags; 1575 struct qeth_card *card; 1576 int rc; 1577 1578 card = CARD_FROM_CDEV(channel->ccwdev); 1579 QETH_CARD_TEXT(card, 3, "haltch"); 1580 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1581 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1582 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1583 1584 if (rc) 1585 return rc; 1586 rc = wait_event_interruptible_timeout(card->wait_q, 1587 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1588 if (rc == -ERESTARTSYS) 1589 return rc; 1590 if (channel->state != CH_STATE_HALTED) 1591 return -ETIME; 1592 return 0; 1593 } 1594 1595 static int qeth_halt_channels(struct qeth_card *card) 1596 { 1597 int rc1 = 0, rc2 = 0, rc3 = 0; 1598 1599 QETH_CARD_TEXT(card, 3, "haltchs"); 1600 rc1 = qeth_halt_channel(&card->read); 1601 rc2 = qeth_halt_channel(&card->write); 1602 rc3 = qeth_halt_channel(&card->data); 1603 if (rc1) 1604 return rc1; 1605 if (rc2) 1606 return rc2; 1607 return rc3; 1608 } 1609 1610 static int qeth_clear_channels(struct qeth_card *card) 1611 { 1612 int rc1 = 0, rc2 = 0, rc3 = 0; 1613 1614 QETH_CARD_TEXT(card, 3, "clearchs"); 1615 rc1 = qeth_clear_channel(&card->read); 1616 rc2 = qeth_clear_channel(&card->write); 1617 rc3 = qeth_clear_channel(&card->data); 1618 if (rc1) 1619 return rc1; 1620 if (rc2) 1621 return rc2; 1622 return rc3; 1623 } 1624 1625 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1626 { 1627 int rc = 0; 1628 1629 QETH_CARD_TEXT(card, 3, "clhacrd"); 1630 1631 if (halt) 1632 rc = qeth_halt_channels(card); 1633 if (rc) 1634 return rc; 1635 return qeth_clear_channels(card); 1636 } 1637 1638 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1639 { 1640 int rc = 0; 1641 1642 QETH_CARD_TEXT(card, 3, "qdioclr"); 1643 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1644 QETH_QDIO_CLEANING)) { 1645 case QETH_QDIO_ESTABLISHED: 1646 if (card->info.type == QETH_CARD_TYPE_IQD) 1647 rc = qdio_shutdown(CARD_DDEV(card), 1648 QDIO_FLAG_CLEANUP_USING_HALT); 1649 else 1650 rc = qdio_shutdown(CARD_DDEV(card), 1651 QDIO_FLAG_CLEANUP_USING_CLEAR); 1652 if (rc) 1653 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1654 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1655 break; 1656 case QETH_QDIO_CLEANING: 1657 return rc; 1658 default: 1659 break; 1660 } 1661 rc = qeth_clear_halt_card(card, use_halt); 1662 if (rc) 1663 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1664 card->state = CARD_STATE_DOWN; 1665 return rc; 1666 } 1667 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1668 1669 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1670 int *length) 1671 { 1672 struct ciw *ciw; 1673 char *rcd_buf; 1674 int ret; 1675 struct qeth_channel *channel = &card->data; 1676 unsigned long flags; 1677 1678 /* 1679 * scan for RCD command in extended SenseID data 1680 */ 1681 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1682 if (!ciw || ciw->cmd == 0) 1683 return -EOPNOTSUPP; 1684 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1685 if (!rcd_buf) 1686 return -ENOMEM; 1687 1688 channel->ccw.cmd_code = ciw->cmd; 1689 channel->ccw.cda = (__u32) __pa(rcd_buf); 1690 channel->ccw.count = ciw->count; 1691 channel->ccw.flags = CCW_FLAG_SLI; 1692 channel->state = CH_STATE_RCD; 1693 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1694 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1695 QETH_RCD_PARM, LPM_ANYPATH, 0, 1696 QETH_RCD_TIMEOUT); 1697 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1698 if (!ret) 1699 wait_event(card->wait_q, 1700 (channel->state == CH_STATE_RCD_DONE || 1701 channel->state == CH_STATE_DOWN)); 1702 if (channel->state == CH_STATE_DOWN) 1703 ret = -EIO; 1704 else 1705 channel->state = CH_STATE_DOWN; 1706 if (ret) { 1707 kfree(rcd_buf); 1708 *buffer = NULL; 1709 *length = 0; 1710 } else { 1711 *length = ciw->count; 1712 *buffer = rcd_buf; 1713 } 1714 return ret; 1715 } 1716 1717 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1718 { 1719 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1720 card->info.chpid = prcd[30]; 1721 card->info.unit_addr2 = prcd[31]; 1722 card->info.cula = prcd[63]; 1723 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1724 (prcd[0x11] == _ascebc['M'])); 1725 } 1726 1727 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1728 { 1729 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1730 struct diag26c_vnic_resp *response = NULL; 1731 struct diag26c_vnic_req *request = NULL; 1732 struct ccw_dev_id id; 1733 char userid[80]; 1734 int rc = 0; 1735 1736 QETH_DBF_TEXT(SETUP, 2, "vmlayer"); 1737 1738 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1739 if (rc) 1740 goto out; 1741 1742 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1743 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1744 if (!request || !response) { 1745 rc = -ENOMEM; 1746 goto out; 1747 } 1748 1749 ccw_device_get_id(CARD_RDEV(card), &id); 1750 request->resp_buf_len = sizeof(*response); 1751 request->resp_version = DIAG26C_VERSION6_VM65918; 1752 request->req_format = DIAG26C_VNIC_INFO; 1753 ASCEBC(userid, 8); 1754 memcpy(&request->sys_name, userid, 8); 1755 request->devno = id.devno; 1756 1757 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1758 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1759 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1760 if (rc) 1761 goto out; 1762 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1763 1764 if (request->resp_buf_len < sizeof(*response) || 1765 response->version != request->resp_version) { 1766 rc = -EIO; 1767 goto out; 1768 } 1769 1770 if (response->protocol == VNIC_INFO_PROT_L2) 1771 disc = QETH_DISCIPLINE_LAYER2; 1772 else if (response->protocol == VNIC_INFO_PROT_L3) 1773 disc = QETH_DISCIPLINE_LAYER3; 1774 1775 out: 1776 kfree(response); 1777 kfree(request); 1778 if (rc) 1779 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc); 1780 return disc; 1781 } 1782 1783 /* Determine whether the device requires a specific layer discipline */ 1784 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1785 { 1786 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1787 1788 if (card->info.type == QETH_CARD_TYPE_OSM || 1789 card->info.type == QETH_CARD_TYPE_OSN) 1790 disc = QETH_DISCIPLINE_LAYER2; 1791 else if (card->info.guestlan) 1792 disc = (card->info.type == QETH_CARD_TYPE_IQD) ? 1793 QETH_DISCIPLINE_LAYER3 : 1794 qeth_vm_detect_layer(card); 1795 1796 switch (disc) { 1797 case QETH_DISCIPLINE_LAYER2: 1798 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1799 break; 1800 case QETH_DISCIPLINE_LAYER3: 1801 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1802 break; 1803 default: 1804 QETH_DBF_TEXT(SETUP, 3, "force no"); 1805 } 1806 1807 return disc; 1808 } 1809 1810 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1811 { 1812 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1813 1814 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1815 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1816 card->info.blkt.time_total = 0; 1817 card->info.blkt.inter_packet = 0; 1818 card->info.blkt.inter_packet_jumbo = 0; 1819 } else { 1820 card->info.blkt.time_total = 250; 1821 card->info.blkt.inter_packet = 5; 1822 card->info.blkt.inter_packet_jumbo = 15; 1823 } 1824 } 1825 1826 static void qeth_init_tokens(struct qeth_card *card) 1827 { 1828 card->token.issuer_rm_w = 0x00010103UL; 1829 card->token.cm_filter_w = 0x00010108UL; 1830 card->token.cm_connection_w = 0x0001010aUL; 1831 card->token.ulp_filter_w = 0x0001010bUL; 1832 card->token.ulp_connection_w = 0x0001010dUL; 1833 } 1834 1835 static void qeth_init_func_level(struct qeth_card *card) 1836 { 1837 switch (card->info.type) { 1838 case QETH_CARD_TYPE_IQD: 1839 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1840 break; 1841 case QETH_CARD_TYPE_OSD: 1842 case QETH_CARD_TYPE_OSN: 1843 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1844 break; 1845 default: 1846 break; 1847 } 1848 } 1849 1850 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1851 void (*idx_reply_cb)(struct qeth_channel *, 1852 struct qeth_cmd_buffer *)) 1853 { 1854 struct qeth_cmd_buffer *iob; 1855 unsigned long flags; 1856 int rc; 1857 struct qeth_card *card; 1858 1859 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1860 card = CARD_FROM_CDEV(channel->ccwdev); 1861 iob = qeth_get_buffer(channel); 1862 if (!iob) 1863 return -ENOMEM; 1864 iob->callback = idx_reply_cb; 1865 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1866 channel->ccw.count = QETH_BUFSIZE; 1867 channel->ccw.cda = (__u32) __pa(iob->data); 1868 1869 wait_event(card->wait_q, 1870 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1871 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1872 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1873 rc = ccw_device_start(channel->ccwdev, 1874 &channel->ccw, (addr_t) iob, 0, 0); 1875 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1876 1877 if (rc) { 1878 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1879 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1880 atomic_set(&channel->irq_pending, 0); 1881 wake_up(&card->wait_q); 1882 return rc; 1883 } 1884 rc = wait_event_interruptible_timeout(card->wait_q, 1885 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1886 if (rc == -ERESTARTSYS) 1887 return rc; 1888 if (channel->state != CH_STATE_UP) { 1889 rc = -ETIME; 1890 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1891 qeth_clear_cmd_buffers(channel); 1892 } else 1893 rc = 0; 1894 return rc; 1895 } 1896 1897 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1898 void (*idx_reply_cb)(struct qeth_channel *, 1899 struct qeth_cmd_buffer *)) 1900 { 1901 struct qeth_card *card; 1902 struct qeth_cmd_buffer *iob; 1903 unsigned long flags; 1904 __u16 temp; 1905 __u8 tmp; 1906 int rc; 1907 struct ccw_dev_id temp_devid; 1908 1909 card = CARD_FROM_CDEV(channel->ccwdev); 1910 1911 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1912 1913 iob = qeth_get_buffer(channel); 1914 if (!iob) 1915 return -ENOMEM; 1916 iob->callback = idx_reply_cb; 1917 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1918 channel->ccw.count = IDX_ACTIVATE_SIZE; 1919 channel->ccw.cda = (__u32) __pa(iob->data); 1920 if (channel == &card->write) { 1921 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1922 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1923 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1924 card->seqno.trans_hdr++; 1925 } else { 1926 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1927 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1928 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1929 } 1930 tmp = ((__u8)card->info.portno) | 0x80; 1931 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1932 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1933 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1934 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1935 &card->info.func_level, sizeof(__u16)); 1936 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1937 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1938 temp = (card->info.cula << 8) + card->info.unit_addr2; 1939 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1940 1941 wait_event(card->wait_q, 1942 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1943 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1944 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1945 rc = ccw_device_start(channel->ccwdev, 1946 &channel->ccw, (addr_t) iob, 0, 0); 1947 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1948 1949 if (rc) { 1950 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1951 rc); 1952 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1953 atomic_set(&channel->irq_pending, 0); 1954 wake_up(&card->wait_q); 1955 return rc; 1956 } 1957 rc = wait_event_interruptible_timeout(card->wait_q, 1958 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1959 if (rc == -ERESTARTSYS) 1960 return rc; 1961 if (channel->state != CH_STATE_ACTIVATING) { 1962 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1963 " failed to recover an error on the device\n"); 1964 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1965 dev_name(&channel->ccwdev->dev)); 1966 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1967 qeth_clear_cmd_buffers(channel); 1968 return -ETIME; 1969 } 1970 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1971 } 1972 1973 static int qeth_peer_func_level(int level) 1974 { 1975 if ((level & 0xff) == 8) 1976 return (level & 0xff) + 0x400; 1977 if (((level >> 8) & 3) == 1) 1978 return (level & 0xff) + 0x200; 1979 return level; 1980 } 1981 1982 static void qeth_idx_write_cb(struct qeth_channel *channel, 1983 struct qeth_cmd_buffer *iob) 1984 { 1985 struct qeth_card *card; 1986 __u16 temp; 1987 1988 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1989 1990 if (channel->state == CH_STATE_DOWN) { 1991 channel->state = CH_STATE_ACTIVATING; 1992 goto out; 1993 } 1994 card = CARD_FROM_CDEV(channel->ccwdev); 1995 1996 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1997 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1998 dev_err(&card->write.ccwdev->dev, 1999 "The adapter is used exclusively by another " 2000 "host\n"); 2001 else 2002 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 2003 " negative reply\n", 2004 dev_name(&card->write.ccwdev->dev)); 2005 goto out; 2006 } 2007 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2008 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 2009 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 2010 "function level mismatch (sent: 0x%x, received: " 2011 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 2012 card->info.func_level, temp); 2013 goto out; 2014 } 2015 channel->state = CH_STATE_UP; 2016 out: 2017 qeth_release_buffer(channel, iob); 2018 } 2019 2020 static void qeth_idx_read_cb(struct qeth_channel *channel, 2021 struct qeth_cmd_buffer *iob) 2022 { 2023 struct qeth_card *card; 2024 __u16 temp; 2025 2026 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 2027 if (channel->state == CH_STATE_DOWN) { 2028 channel->state = CH_STATE_ACTIVATING; 2029 goto out; 2030 } 2031 2032 card = CARD_FROM_CDEV(channel->ccwdev); 2033 if (qeth_check_idx_response(card, iob->data)) 2034 goto out; 2035 2036 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 2037 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 2038 case QETH_IDX_ACT_ERR_EXCL: 2039 dev_err(&card->write.ccwdev->dev, 2040 "The adapter is used exclusively by another " 2041 "host\n"); 2042 break; 2043 case QETH_IDX_ACT_ERR_AUTH: 2044 case QETH_IDX_ACT_ERR_AUTH_USER: 2045 dev_err(&card->read.ccwdev->dev, 2046 "Setting the device online failed because of " 2047 "insufficient authorization\n"); 2048 break; 2049 default: 2050 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 2051 " negative reply\n", 2052 dev_name(&card->read.ccwdev->dev)); 2053 } 2054 QETH_CARD_TEXT_(card, 2, "idxread%c", 2055 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 2056 goto out; 2057 } 2058 2059 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2060 if (temp != qeth_peer_func_level(card->info.func_level)) { 2061 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 2062 "level mismatch (sent: 0x%x, received: 0x%x)\n", 2063 dev_name(&card->read.ccwdev->dev), 2064 card->info.func_level, temp); 2065 goto out; 2066 } 2067 memcpy(&card->token.issuer_rm_r, 2068 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2069 QETH_MPC_TOKEN_LENGTH); 2070 memcpy(&card->info.mcl_level[0], 2071 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2072 channel->state = CH_STATE_UP; 2073 out: 2074 qeth_release_buffer(channel, iob); 2075 } 2076 2077 void qeth_prepare_control_data(struct qeth_card *card, int len, 2078 struct qeth_cmd_buffer *iob) 2079 { 2080 qeth_setup_ccw(&card->write, iob->data, len); 2081 iob->callback = qeth_release_buffer; 2082 2083 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2084 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2085 card->seqno.trans_hdr++; 2086 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2087 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2088 card->seqno.pdu_hdr++; 2089 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2090 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2091 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2092 } 2093 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2094 2095 /** 2096 * qeth_send_control_data() - send control command to the card 2097 * @card: qeth_card structure pointer 2098 * @len: size of the command buffer 2099 * @iob: qeth_cmd_buffer pointer 2100 * @reply_cb: callback function pointer 2101 * @cb_card: pointer to the qeth_card structure 2102 * @cb_reply: pointer to the qeth_reply structure 2103 * @cb_cmd: pointer to the original iob for non-IPA 2104 * commands, or to the qeth_ipa_cmd structure 2105 * for the IPA commands. 2106 * @reply_param: private pointer passed to the callback 2107 * 2108 * Returns the value of the `return_code' field of the response 2109 * block returned from the hardware, or other error indication. 2110 * Value of zero indicates successful execution of the command. 2111 * 2112 * Callback function gets called one or more times, with cb_cmd 2113 * pointing to the response returned by the hardware. Callback 2114 * function must return non-zero if more reply blocks are expected, 2115 * and zero if the last or only reply block is received. Callback 2116 * function can get the value of the reply_param pointer from the 2117 * field 'param' of the structure qeth_reply. 2118 */ 2119 2120 int qeth_send_control_data(struct qeth_card *card, int len, 2121 struct qeth_cmd_buffer *iob, 2122 int (*reply_cb)(struct qeth_card *cb_card, 2123 struct qeth_reply *cb_reply, 2124 unsigned long cb_cmd), 2125 void *reply_param) 2126 { 2127 int rc; 2128 unsigned long flags; 2129 struct qeth_reply *reply = NULL; 2130 unsigned long timeout, event_timeout; 2131 struct qeth_ipa_cmd *cmd = NULL; 2132 2133 QETH_CARD_TEXT(card, 2, "sendctl"); 2134 2135 if (card->read_or_write_problem) { 2136 qeth_release_buffer(iob->channel, iob); 2137 return -EIO; 2138 } 2139 reply = qeth_alloc_reply(card); 2140 if (!reply) { 2141 return -ENOMEM; 2142 } 2143 reply->callback = reply_cb; 2144 reply->param = reply_param; 2145 2146 init_waitqueue_head(&reply->wait_q); 2147 2148 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2149 2150 if (IS_IPA(iob->data)) { 2151 cmd = __ipa_cmd(iob); 2152 cmd->hdr.seqno = card->seqno.ipa++; 2153 reply->seqno = cmd->hdr.seqno; 2154 event_timeout = QETH_IPA_TIMEOUT; 2155 } else { 2156 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2157 event_timeout = QETH_TIMEOUT; 2158 } 2159 qeth_prepare_control_data(card, len, iob); 2160 2161 spin_lock_irqsave(&card->lock, flags); 2162 list_add_tail(&reply->list, &card->cmd_waiter_list); 2163 spin_unlock_irqrestore(&card->lock, flags); 2164 2165 timeout = jiffies + event_timeout; 2166 2167 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2168 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2169 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2170 (addr_t) iob, 0, 0); 2171 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2172 if (rc) { 2173 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2174 "ccw_device_start rc = %i\n", 2175 dev_name(&card->write.ccwdev->dev), rc); 2176 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2177 spin_lock_irqsave(&card->lock, flags); 2178 list_del_init(&reply->list); 2179 qeth_put_reply(reply); 2180 spin_unlock_irqrestore(&card->lock, flags); 2181 qeth_release_buffer(iob->channel, iob); 2182 atomic_set(&card->write.irq_pending, 0); 2183 wake_up(&card->wait_q); 2184 return rc; 2185 } 2186 2187 /* we have only one long running ipassist, since we can ensure 2188 process context of this command we can sleep */ 2189 if (cmd && cmd->hdr.command == IPA_CMD_SETIP && 2190 cmd->hdr.prot_version == QETH_PROT_IPV4) { 2191 if (!wait_event_timeout(reply->wait_q, 2192 atomic_read(&reply->received), event_timeout)) 2193 goto time_err; 2194 } else { 2195 while (!atomic_read(&reply->received)) { 2196 if (time_after(jiffies, timeout)) 2197 goto time_err; 2198 cpu_relax(); 2199 } 2200 } 2201 2202 if (reply->rc == -EIO) 2203 goto error; 2204 rc = reply->rc; 2205 qeth_put_reply(reply); 2206 return rc; 2207 2208 time_err: 2209 reply->rc = -ETIME; 2210 spin_lock_irqsave(&reply->card->lock, flags); 2211 list_del_init(&reply->list); 2212 spin_unlock_irqrestore(&reply->card->lock, flags); 2213 atomic_inc(&reply->received); 2214 error: 2215 atomic_set(&card->write.irq_pending, 0); 2216 qeth_release_buffer(iob->channel, iob); 2217 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2218 rc = reply->rc; 2219 qeth_put_reply(reply); 2220 return rc; 2221 } 2222 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2223 2224 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2225 unsigned long data) 2226 { 2227 struct qeth_cmd_buffer *iob; 2228 2229 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2230 2231 iob = (struct qeth_cmd_buffer *) data; 2232 memcpy(&card->token.cm_filter_r, 2233 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2234 QETH_MPC_TOKEN_LENGTH); 2235 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2236 return 0; 2237 } 2238 2239 static int qeth_cm_enable(struct qeth_card *card) 2240 { 2241 int rc; 2242 struct qeth_cmd_buffer *iob; 2243 2244 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2245 2246 iob = qeth_wait_for_buffer(&card->write); 2247 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2248 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2249 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2250 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2251 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2252 2253 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2254 qeth_cm_enable_cb, NULL); 2255 return rc; 2256 } 2257 2258 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2259 unsigned long data) 2260 { 2261 2262 struct qeth_cmd_buffer *iob; 2263 2264 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2265 2266 iob = (struct qeth_cmd_buffer *) data; 2267 memcpy(&card->token.cm_connection_r, 2268 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2269 QETH_MPC_TOKEN_LENGTH); 2270 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2271 return 0; 2272 } 2273 2274 static int qeth_cm_setup(struct qeth_card *card) 2275 { 2276 int rc; 2277 struct qeth_cmd_buffer *iob; 2278 2279 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2280 2281 iob = qeth_wait_for_buffer(&card->write); 2282 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2283 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2284 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2285 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2286 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2287 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2288 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2289 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2290 qeth_cm_setup_cb, NULL); 2291 return rc; 2292 2293 } 2294 2295 static int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2296 { 2297 switch (card->info.type) { 2298 case QETH_CARD_TYPE_IQD: 2299 return card->info.max_mtu; 2300 case QETH_CARD_TYPE_OSD: 2301 case QETH_CARD_TYPE_OSX: 2302 if (!card->options.layer2) 2303 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */ 2304 /* fall through */ 2305 default: 2306 return ETH_DATA_LEN; 2307 } 2308 } 2309 2310 static int qeth_get_mtu_outof_framesize(int framesize) 2311 { 2312 switch (framesize) { 2313 case 0x4000: 2314 return 8192; 2315 case 0x6000: 2316 return 16384; 2317 case 0xa000: 2318 return 32768; 2319 case 0xffff: 2320 return 57344; 2321 default: 2322 return 0; 2323 } 2324 } 2325 2326 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2327 { 2328 switch (card->info.type) { 2329 case QETH_CARD_TYPE_OSD: 2330 case QETH_CARD_TYPE_OSM: 2331 case QETH_CARD_TYPE_OSX: 2332 case QETH_CARD_TYPE_IQD: 2333 return ((mtu >= 576) && 2334 (mtu <= card->info.max_mtu)); 2335 case QETH_CARD_TYPE_OSN: 2336 default: 2337 return 1; 2338 } 2339 } 2340 2341 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2342 unsigned long data) 2343 { 2344 2345 __u16 mtu, framesize; 2346 __u16 len; 2347 __u8 link_type; 2348 struct qeth_cmd_buffer *iob; 2349 2350 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2351 2352 iob = (struct qeth_cmd_buffer *) data; 2353 memcpy(&card->token.ulp_filter_r, 2354 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2355 QETH_MPC_TOKEN_LENGTH); 2356 if (card->info.type == QETH_CARD_TYPE_IQD) { 2357 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2358 mtu = qeth_get_mtu_outof_framesize(framesize); 2359 if (!mtu) { 2360 iob->rc = -EINVAL; 2361 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2362 return 0; 2363 } 2364 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2365 /* frame size has changed */ 2366 if (card->dev && 2367 ((card->dev->mtu == card->info.initial_mtu) || 2368 (card->dev->mtu > mtu))) 2369 card->dev->mtu = mtu; 2370 qeth_free_qdio_buffers(card); 2371 } 2372 card->info.initial_mtu = mtu; 2373 card->info.max_mtu = mtu; 2374 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2375 } else { 2376 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2377 iob->data); 2378 card->info.initial_mtu = min(card->info.max_mtu, 2379 qeth_get_initial_mtu_for_card(card)); 2380 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2381 } 2382 2383 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2384 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2385 memcpy(&link_type, 2386 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2387 card->info.link_type = link_type; 2388 } else 2389 card->info.link_type = 0; 2390 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2391 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2392 return 0; 2393 } 2394 2395 static int qeth_ulp_enable(struct qeth_card *card) 2396 { 2397 int rc; 2398 char prot_type; 2399 struct qeth_cmd_buffer *iob; 2400 2401 /*FIXME: trace view callbacks*/ 2402 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2403 2404 iob = qeth_wait_for_buffer(&card->write); 2405 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2406 2407 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2408 (__u8) card->info.portno; 2409 if (card->options.layer2) 2410 if (card->info.type == QETH_CARD_TYPE_OSN) 2411 prot_type = QETH_PROT_OSN2; 2412 else 2413 prot_type = QETH_PROT_LAYER2; 2414 else 2415 prot_type = QETH_PROT_TCPIP; 2416 2417 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2418 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2419 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2420 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2421 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2422 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2423 qeth_ulp_enable_cb, NULL); 2424 return rc; 2425 2426 } 2427 2428 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2429 unsigned long data) 2430 { 2431 struct qeth_cmd_buffer *iob; 2432 2433 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2434 2435 iob = (struct qeth_cmd_buffer *) data; 2436 memcpy(&card->token.ulp_connection_r, 2437 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2438 QETH_MPC_TOKEN_LENGTH); 2439 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2440 3)) { 2441 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2442 dev_err(&card->gdev->dev, "A connection could not be " 2443 "established because of an OLM limit\n"); 2444 iob->rc = -EMLINK; 2445 } 2446 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2447 return 0; 2448 } 2449 2450 static int qeth_ulp_setup(struct qeth_card *card) 2451 { 2452 int rc; 2453 __u16 temp; 2454 struct qeth_cmd_buffer *iob; 2455 struct ccw_dev_id dev_id; 2456 2457 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2458 2459 iob = qeth_wait_for_buffer(&card->write); 2460 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2461 2462 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2463 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2464 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2465 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2466 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2467 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2468 2469 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2470 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2471 temp = (card->info.cula << 8) + card->info.unit_addr2; 2472 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2473 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2474 qeth_ulp_setup_cb, NULL); 2475 return rc; 2476 } 2477 2478 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2479 { 2480 int rc; 2481 struct qeth_qdio_out_buffer *newbuf; 2482 2483 rc = 0; 2484 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2485 if (!newbuf) { 2486 rc = -ENOMEM; 2487 goto out; 2488 } 2489 newbuf->buffer = q->qdio_bufs[bidx]; 2490 skb_queue_head_init(&newbuf->skb_list); 2491 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2492 newbuf->q = q; 2493 newbuf->aob = NULL; 2494 newbuf->next_pending = q->bufs[bidx]; 2495 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2496 q->bufs[bidx] = newbuf; 2497 if (q->bufstates) { 2498 q->bufstates[bidx].user = newbuf; 2499 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2500 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2501 QETH_CARD_TEXT_(q->card, 2, "%lx", 2502 (long) newbuf->next_pending); 2503 } 2504 out: 2505 return rc; 2506 } 2507 2508 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2509 { 2510 if (!q) 2511 return; 2512 2513 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2514 kfree(q); 2515 } 2516 2517 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2518 { 2519 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2520 2521 if (!q) 2522 return NULL; 2523 2524 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2525 kfree(q); 2526 return NULL; 2527 } 2528 return q; 2529 } 2530 2531 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2532 { 2533 int i, j; 2534 2535 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2536 2537 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2538 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2539 return 0; 2540 2541 QETH_DBF_TEXT(SETUP, 2, "inq"); 2542 card->qdio.in_q = qeth_alloc_qdio_queue(); 2543 if (!card->qdio.in_q) 2544 goto out_nomem; 2545 2546 /* inbound buffer pool */ 2547 if (qeth_alloc_buffer_pool(card)) 2548 goto out_freeinq; 2549 2550 /* outbound */ 2551 card->qdio.out_qs = 2552 kzalloc(card->qdio.no_out_queues * 2553 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2554 if (!card->qdio.out_qs) 2555 goto out_freepool; 2556 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2557 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2558 if (!card->qdio.out_qs[i]) 2559 goto out_freeoutq; 2560 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2561 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2562 card->qdio.out_qs[i]->queue_no = i; 2563 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2564 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2565 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2566 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2567 goto out_freeoutqbufs; 2568 } 2569 } 2570 2571 /* completion */ 2572 if (qeth_alloc_cq(card)) 2573 goto out_freeoutq; 2574 2575 return 0; 2576 2577 out_freeoutqbufs: 2578 while (j > 0) { 2579 --j; 2580 kmem_cache_free(qeth_qdio_outbuf_cache, 2581 card->qdio.out_qs[i]->bufs[j]); 2582 card->qdio.out_qs[i]->bufs[j] = NULL; 2583 } 2584 out_freeoutq: 2585 while (i > 0) { 2586 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2587 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2588 } 2589 kfree(card->qdio.out_qs); 2590 card->qdio.out_qs = NULL; 2591 out_freepool: 2592 qeth_free_buffer_pool(card); 2593 out_freeinq: 2594 qeth_free_qdio_queue(card->qdio.in_q); 2595 card->qdio.in_q = NULL; 2596 out_nomem: 2597 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2598 return -ENOMEM; 2599 } 2600 2601 static void qeth_free_qdio_buffers(struct qeth_card *card) 2602 { 2603 int i, j; 2604 2605 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2606 QETH_QDIO_UNINITIALIZED) 2607 return; 2608 2609 qeth_free_cq(card); 2610 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2611 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2612 if (card->qdio.in_q->bufs[j].rx_skb) 2613 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2614 } 2615 qeth_free_qdio_queue(card->qdio.in_q); 2616 card->qdio.in_q = NULL; 2617 /* inbound buffer pool */ 2618 qeth_free_buffer_pool(card); 2619 /* free outbound qdio_qs */ 2620 if (card->qdio.out_qs) { 2621 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2622 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2623 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2624 } 2625 kfree(card->qdio.out_qs); 2626 card->qdio.out_qs = NULL; 2627 } 2628 } 2629 2630 static void qeth_create_qib_param_field(struct qeth_card *card, 2631 char *param_field) 2632 { 2633 2634 param_field[0] = _ascebc['P']; 2635 param_field[1] = _ascebc['C']; 2636 param_field[2] = _ascebc['I']; 2637 param_field[3] = _ascebc['T']; 2638 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2639 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2640 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2641 } 2642 2643 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2644 char *param_field) 2645 { 2646 param_field[16] = _ascebc['B']; 2647 param_field[17] = _ascebc['L']; 2648 param_field[18] = _ascebc['K']; 2649 param_field[19] = _ascebc['T']; 2650 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2651 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2652 *((unsigned int *) (¶m_field[28])) = 2653 card->info.blkt.inter_packet_jumbo; 2654 } 2655 2656 static int qeth_qdio_activate(struct qeth_card *card) 2657 { 2658 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2659 return qdio_activate(CARD_DDEV(card)); 2660 } 2661 2662 static int qeth_dm_act(struct qeth_card *card) 2663 { 2664 int rc; 2665 struct qeth_cmd_buffer *iob; 2666 2667 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2668 2669 iob = qeth_wait_for_buffer(&card->write); 2670 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2671 2672 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2673 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2674 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2675 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2676 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2677 return rc; 2678 } 2679 2680 static int qeth_mpc_initialize(struct qeth_card *card) 2681 { 2682 int rc; 2683 2684 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2685 2686 rc = qeth_issue_next_read(card); 2687 if (rc) { 2688 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2689 return rc; 2690 } 2691 rc = qeth_cm_enable(card); 2692 if (rc) { 2693 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2694 goto out_qdio; 2695 } 2696 rc = qeth_cm_setup(card); 2697 if (rc) { 2698 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2699 goto out_qdio; 2700 } 2701 rc = qeth_ulp_enable(card); 2702 if (rc) { 2703 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2704 goto out_qdio; 2705 } 2706 rc = qeth_ulp_setup(card); 2707 if (rc) { 2708 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2709 goto out_qdio; 2710 } 2711 rc = qeth_alloc_qdio_buffers(card); 2712 if (rc) { 2713 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2714 goto out_qdio; 2715 } 2716 rc = qeth_qdio_establish(card); 2717 if (rc) { 2718 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2719 qeth_free_qdio_buffers(card); 2720 goto out_qdio; 2721 } 2722 rc = qeth_qdio_activate(card); 2723 if (rc) { 2724 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2725 goto out_qdio; 2726 } 2727 rc = qeth_dm_act(card); 2728 if (rc) { 2729 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2730 goto out_qdio; 2731 } 2732 2733 return 0; 2734 out_qdio: 2735 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2736 qdio_free(CARD_DDEV(card)); 2737 return rc; 2738 } 2739 2740 void qeth_print_status_message(struct qeth_card *card) 2741 { 2742 switch (card->info.type) { 2743 case QETH_CARD_TYPE_OSD: 2744 case QETH_CARD_TYPE_OSM: 2745 case QETH_CARD_TYPE_OSX: 2746 /* VM will use a non-zero first character 2747 * to indicate a HiperSockets like reporting 2748 * of the level OSA sets the first character to zero 2749 * */ 2750 if (!card->info.mcl_level[0]) { 2751 sprintf(card->info.mcl_level, "%02x%02x", 2752 card->info.mcl_level[2], 2753 card->info.mcl_level[3]); 2754 break; 2755 } 2756 /* fallthrough */ 2757 case QETH_CARD_TYPE_IQD: 2758 if ((card->info.guestlan) || 2759 (card->info.mcl_level[0] & 0x80)) { 2760 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2761 card->info.mcl_level[0]]; 2762 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2763 card->info.mcl_level[1]]; 2764 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2765 card->info.mcl_level[2]]; 2766 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2767 card->info.mcl_level[3]]; 2768 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2769 } 2770 break; 2771 default: 2772 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2773 } 2774 dev_info(&card->gdev->dev, 2775 "Device is a%s card%s%s%s\nwith link type %s.\n", 2776 qeth_get_cardname(card), 2777 (card->info.mcl_level[0]) ? " (level: " : "", 2778 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2779 (card->info.mcl_level[0]) ? ")" : "", 2780 qeth_get_cardname_short(card)); 2781 } 2782 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2783 2784 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2785 { 2786 struct qeth_buffer_pool_entry *entry; 2787 2788 QETH_CARD_TEXT(card, 5, "inwrklst"); 2789 2790 list_for_each_entry(entry, 2791 &card->qdio.init_pool.entry_list, init_list) { 2792 qeth_put_buffer_pool_entry(card, entry); 2793 } 2794 } 2795 2796 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2797 struct qeth_card *card) 2798 { 2799 struct list_head *plh; 2800 struct qeth_buffer_pool_entry *entry; 2801 int i, free; 2802 struct page *page; 2803 2804 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2805 return NULL; 2806 2807 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2808 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2809 free = 1; 2810 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2811 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2812 free = 0; 2813 break; 2814 } 2815 } 2816 if (free) { 2817 list_del_init(&entry->list); 2818 return entry; 2819 } 2820 } 2821 2822 /* no free buffer in pool so take first one and swap pages */ 2823 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2824 struct qeth_buffer_pool_entry, list); 2825 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2826 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2827 page = alloc_page(GFP_ATOMIC); 2828 if (!page) { 2829 return NULL; 2830 } else { 2831 free_page((unsigned long)entry->elements[i]); 2832 entry->elements[i] = page_address(page); 2833 if (card->options.performance_stats) 2834 card->perf_stats.sg_alloc_page_rx++; 2835 } 2836 } 2837 } 2838 list_del_init(&entry->list); 2839 return entry; 2840 } 2841 2842 static int qeth_init_input_buffer(struct qeth_card *card, 2843 struct qeth_qdio_buffer *buf) 2844 { 2845 struct qeth_buffer_pool_entry *pool_entry; 2846 int i; 2847 2848 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2849 buf->rx_skb = netdev_alloc_skb(card->dev, 2850 QETH_RX_PULL_LEN + ETH_HLEN); 2851 if (!buf->rx_skb) 2852 return 1; 2853 } 2854 2855 pool_entry = qeth_find_free_buffer_pool_entry(card); 2856 if (!pool_entry) 2857 return 1; 2858 2859 /* 2860 * since the buffer is accessed only from the input_tasklet 2861 * there shouldn't be a need to synchronize; also, since we use 2862 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2863 * buffers 2864 */ 2865 2866 buf->pool_entry = pool_entry; 2867 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2868 buf->buffer->element[i].length = PAGE_SIZE; 2869 buf->buffer->element[i].addr = pool_entry->elements[i]; 2870 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2871 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2872 else 2873 buf->buffer->element[i].eflags = 0; 2874 buf->buffer->element[i].sflags = 0; 2875 } 2876 return 0; 2877 } 2878 2879 int qeth_init_qdio_queues(struct qeth_card *card) 2880 { 2881 int i, j; 2882 int rc; 2883 2884 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2885 2886 /* inbound queue */ 2887 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2888 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2889 qeth_initialize_working_pool_list(card); 2890 /*give only as many buffers to hardware as we have buffer pool entries*/ 2891 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2892 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2893 card->qdio.in_q->next_buf_to_init = 2894 card->qdio.in_buf_pool.buf_count - 1; 2895 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2896 card->qdio.in_buf_pool.buf_count - 1); 2897 if (rc) { 2898 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2899 return rc; 2900 } 2901 2902 /* completion */ 2903 rc = qeth_cq_init(card); 2904 if (rc) { 2905 return rc; 2906 } 2907 2908 /* outbound queue */ 2909 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2910 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2911 QDIO_MAX_BUFFERS_PER_Q); 2912 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2913 qeth_clear_output_buffer(card->qdio.out_qs[i], 2914 card->qdio.out_qs[i]->bufs[j], 2915 QETH_QDIO_BUF_EMPTY); 2916 } 2917 card->qdio.out_qs[i]->card = card; 2918 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2919 card->qdio.out_qs[i]->do_pack = 0; 2920 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2921 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2922 atomic_set(&card->qdio.out_qs[i]->state, 2923 QETH_OUT_Q_UNLOCKED); 2924 } 2925 return 0; 2926 } 2927 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2928 2929 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2930 { 2931 switch (link_type) { 2932 case QETH_LINK_TYPE_HSTR: 2933 return 2; 2934 default: 2935 return 1; 2936 } 2937 } 2938 2939 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2940 struct qeth_ipa_cmd *cmd, __u8 command, 2941 enum qeth_prot_versions prot) 2942 { 2943 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2944 cmd->hdr.command = command; 2945 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2946 /* cmd->hdr.seqno is set by qeth_send_control_data() */ 2947 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2948 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2949 if (card->options.layer2) 2950 cmd->hdr.prim_version_no = 2; 2951 else 2952 cmd->hdr.prim_version_no = 1; 2953 cmd->hdr.param_count = 1; 2954 cmd->hdr.prot_version = prot; 2955 cmd->hdr.ipa_supported = 0; 2956 cmd->hdr.ipa_enabled = 0; 2957 } 2958 2959 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2960 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2961 { 2962 struct qeth_cmd_buffer *iob; 2963 2964 iob = qeth_get_buffer(&card->write); 2965 if (iob) { 2966 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot); 2967 } else { 2968 dev_warn(&card->gdev->dev, 2969 "The qeth driver ran out of channel command buffers\n"); 2970 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2971 dev_name(&card->gdev->dev)); 2972 } 2973 2974 return iob; 2975 } 2976 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2977 2978 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2979 char prot_type) 2980 { 2981 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2982 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2983 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2984 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2985 } 2986 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2987 2988 /** 2989 * qeth_send_ipa_cmd() - send an IPA command 2990 * 2991 * See qeth_send_control_data() for explanation of the arguments. 2992 */ 2993 2994 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2995 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2996 unsigned long), 2997 void *reply_param) 2998 { 2999 int rc; 3000 char prot_type; 3001 3002 QETH_CARD_TEXT(card, 4, "sendipa"); 3003 3004 if (card->options.layer2) 3005 if (card->info.type == QETH_CARD_TYPE_OSN) 3006 prot_type = QETH_PROT_OSN2; 3007 else 3008 prot_type = QETH_PROT_LAYER2; 3009 else 3010 prot_type = QETH_PROT_TCPIP; 3011 qeth_prepare_ipa_cmd(card, iob, prot_type); 3012 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 3013 iob, reply_cb, reply_param); 3014 if (rc == -ETIME) { 3015 qeth_clear_ipacmd_list(card); 3016 qeth_schedule_recovery(card); 3017 } 3018 return rc; 3019 } 3020 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 3021 3022 static int qeth_send_startlan(struct qeth_card *card) 3023 { 3024 int rc; 3025 struct qeth_cmd_buffer *iob; 3026 3027 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 3028 3029 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 3030 if (!iob) 3031 return -ENOMEM; 3032 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 3033 return rc; 3034 } 3035 3036 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 3037 struct qeth_reply *reply, unsigned long data) 3038 { 3039 struct qeth_ipa_cmd *cmd; 3040 3041 QETH_CARD_TEXT(card, 4, "defadpcb"); 3042 3043 cmd = (struct qeth_ipa_cmd *) data; 3044 if (cmd->hdr.return_code == 0) 3045 cmd->hdr.return_code = 3046 cmd->data.setadapterparms.hdr.return_code; 3047 return 0; 3048 } 3049 3050 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 3051 struct qeth_reply *reply, unsigned long data) 3052 { 3053 struct qeth_ipa_cmd *cmd; 3054 3055 QETH_CARD_TEXT(card, 3, "quyadpcb"); 3056 3057 cmd = (struct qeth_ipa_cmd *) data; 3058 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 3059 card->info.link_type = 3060 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 3061 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 3062 } 3063 card->options.adp.supported_funcs = 3064 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 3065 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 3066 } 3067 3068 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 3069 __u32 command, __u32 cmdlen) 3070 { 3071 struct qeth_cmd_buffer *iob; 3072 struct qeth_ipa_cmd *cmd; 3073 3074 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3075 QETH_PROT_IPV4); 3076 if (iob) { 3077 cmd = __ipa_cmd(iob); 3078 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3079 cmd->data.setadapterparms.hdr.command_code = command; 3080 cmd->data.setadapterparms.hdr.used_total = 1; 3081 cmd->data.setadapterparms.hdr.seq_no = 1; 3082 } 3083 3084 return iob; 3085 } 3086 3087 int qeth_query_setadapterparms(struct qeth_card *card) 3088 { 3089 int rc; 3090 struct qeth_cmd_buffer *iob; 3091 3092 QETH_CARD_TEXT(card, 3, "queryadp"); 3093 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3094 sizeof(struct qeth_ipacmd_setadpparms)); 3095 if (!iob) 3096 return -ENOMEM; 3097 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3098 return rc; 3099 } 3100 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3101 3102 static int qeth_query_ipassists_cb(struct qeth_card *card, 3103 struct qeth_reply *reply, unsigned long data) 3104 { 3105 struct qeth_ipa_cmd *cmd; 3106 3107 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3108 3109 cmd = (struct qeth_ipa_cmd *) data; 3110 3111 switch (cmd->hdr.return_code) { 3112 case IPA_RC_NOTSUPP: 3113 case IPA_RC_L2_UNSUPPORTED_CMD: 3114 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3115 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3116 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3117 return -0; 3118 default: 3119 if (cmd->hdr.return_code) { 3120 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3121 "rc=%d\n", 3122 dev_name(&card->gdev->dev), 3123 cmd->hdr.return_code); 3124 return 0; 3125 } 3126 } 3127 3128 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3129 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3130 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3131 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3132 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3133 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3134 } else 3135 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3136 "\n", dev_name(&card->gdev->dev)); 3137 return 0; 3138 } 3139 3140 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3141 { 3142 int rc; 3143 struct qeth_cmd_buffer *iob; 3144 3145 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3146 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3147 if (!iob) 3148 return -ENOMEM; 3149 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3150 return rc; 3151 } 3152 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3153 3154 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3155 struct qeth_reply *reply, unsigned long data) 3156 { 3157 struct qeth_ipa_cmd *cmd; 3158 struct qeth_switch_info *sw_info; 3159 struct qeth_query_switch_attributes *attrs; 3160 3161 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3162 cmd = (struct qeth_ipa_cmd *) data; 3163 sw_info = (struct qeth_switch_info *)reply->param; 3164 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3165 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3166 sw_info->capabilities = attrs->capabilities; 3167 sw_info->settings = attrs->settings; 3168 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3169 sw_info->settings); 3170 } 3171 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3172 3173 return 0; 3174 } 3175 3176 int qeth_query_switch_attributes(struct qeth_card *card, 3177 struct qeth_switch_info *sw_info) 3178 { 3179 struct qeth_cmd_buffer *iob; 3180 3181 QETH_CARD_TEXT(card, 2, "qswiattr"); 3182 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3183 return -EOPNOTSUPP; 3184 if (!netif_carrier_ok(card->dev)) 3185 return -ENOMEDIUM; 3186 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3187 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3188 if (!iob) 3189 return -ENOMEM; 3190 return qeth_send_ipa_cmd(card, iob, 3191 qeth_query_switch_attributes_cb, sw_info); 3192 } 3193 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3194 3195 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3196 struct qeth_reply *reply, unsigned long data) 3197 { 3198 struct qeth_ipa_cmd *cmd; 3199 __u16 rc; 3200 3201 cmd = (struct qeth_ipa_cmd *)data; 3202 rc = cmd->hdr.return_code; 3203 if (rc) 3204 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3205 else 3206 card->info.diagass_support = cmd->data.diagass.ext; 3207 return 0; 3208 } 3209 3210 static int qeth_query_setdiagass(struct qeth_card *card) 3211 { 3212 struct qeth_cmd_buffer *iob; 3213 struct qeth_ipa_cmd *cmd; 3214 3215 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3216 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3217 if (!iob) 3218 return -ENOMEM; 3219 cmd = __ipa_cmd(iob); 3220 cmd->data.diagass.subcmd_len = 16; 3221 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3222 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3223 } 3224 3225 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3226 { 3227 unsigned long info = get_zeroed_page(GFP_KERNEL); 3228 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3229 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3230 struct ccw_dev_id ccwid; 3231 int level; 3232 3233 tid->chpid = card->info.chpid; 3234 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3235 tid->ssid = ccwid.ssid; 3236 tid->devno = ccwid.devno; 3237 if (!info) 3238 return; 3239 level = stsi(NULL, 0, 0, 0); 3240 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3241 tid->lparnr = info222->lpar_number; 3242 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3243 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3244 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3245 } 3246 free_page(info); 3247 return; 3248 } 3249 3250 static int qeth_hw_trap_cb(struct qeth_card *card, 3251 struct qeth_reply *reply, unsigned long data) 3252 { 3253 struct qeth_ipa_cmd *cmd; 3254 __u16 rc; 3255 3256 cmd = (struct qeth_ipa_cmd *)data; 3257 rc = cmd->hdr.return_code; 3258 if (rc) 3259 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3260 return 0; 3261 } 3262 3263 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3264 { 3265 struct qeth_cmd_buffer *iob; 3266 struct qeth_ipa_cmd *cmd; 3267 3268 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3269 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3270 if (!iob) 3271 return -ENOMEM; 3272 cmd = __ipa_cmd(iob); 3273 cmd->data.diagass.subcmd_len = 80; 3274 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3275 cmd->data.diagass.type = 1; 3276 cmd->data.diagass.action = action; 3277 switch (action) { 3278 case QETH_DIAGS_TRAP_ARM: 3279 cmd->data.diagass.options = 0x0003; 3280 cmd->data.diagass.ext = 0x00010000 + 3281 sizeof(struct qeth_trap_id); 3282 qeth_get_trap_id(card, 3283 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3284 break; 3285 case QETH_DIAGS_TRAP_DISARM: 3286 cmd->data.diagass.options = 0x0001; 3287 break; 3288 case QETH_DIAGS_TRAP_CAPTURE: 3289 break; 3290 } 3291 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3292 } 3293 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3294 3295 static int qeth_check_qdio_errors(struct qeth_card *card, 3296 struct qdio_buffer *buf, 3297 unsigned int qdio_error, 3298 const char *dbftext) 3299 { 3300 if (qdio_error) { 3301 QETH_CARD_TEXT(card, 2, dbftext); 3302 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3303 buf->element[15].sflags); 3304 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3305 buf->element[14].sflags); 3306 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3307 if ((buf->element[15].sflags) == 0x12) { 3308 card->stats.rx_dropped++; 3309 return 0; 3310 } else 3311 return 1; 3312 } 3313 return 0; 3314 } 3315 3316 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3317 { 3318 struct qeth_qdio_q *queue = card->qdio.in_q; 3319 struct list_head *lh; 3320 int count; 3321 int i; 3322 int rc; 3323 int newcount = 0; 3324 3325 count = (index < queue->next_buf_to_init)? 3326 card->qdio.in_buf_pool.buf_count - 3327 (queue->next_buf_to_init - index) : 3328 card->qdio.in_buf_pool.buf_count - 3329 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3330 /* only requeue at a certain threshold to avoid SIGAs */ 3331 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3332 for (i = queue->next_buf_to_init; 3333 i < queue->next_buf_to_init + count; ++i) { 3334 if (qeth_init_input_buffer(card, 3335 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3336 break; 3337 } else { 3338 newcount++; 3339 } 3340 } 3341 3342 if (newcount < count) { 3343 /* we are in memory shortage so we switch back to 3344 traditional skb allocation and drop packages */ 3345 atomic_set(&card->force_alloc_skb, 3); 3346 count = newcount; 3347 } else { 3348 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3349 } 3350 3351 if (!count) { 3352 i = 0; 3353 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3354 i++; 3355 if (i == card->qdio.in_buf_pool.buf_count) { 3356 QETH_CARD_TEXT(card, 2, "qsarbw"); 3357 card->reclaim_index = index; 3358 schedule_delayed_work( 3359 &card->buffer_reclaim_work, 3360 QETH_RECLAIM_WORK_TIME); 3361 } 3362 return; 3363 } 3364 3365 /* 3366 * according to old code it should be avoided to requeue all 3367 * 128 buffers in order to benefit from PCI avoidance. 3368 * this function keeps at least one buffer (the buffer at 3369 * 'index') un-requeued -> this buffer is the first buffer that 3370 * will be requeued the next time 3371 */ 3372 if (card->options.performance_stats) { 3373 card->perf_stats.inbound_do_qdio_cnt++; 3374 card->perf_stats.inbound_do_qdio_start_time = 3375 qeth_get_micros(); 3376 } 3377 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3378 queue->next_buf_to_init, count); 3379 if (card->options.performance_stats) 3380 card->perf_stats.inbound_do_qdio_time += 3381 qeth_get_micros() - 3382 card->perf_stats.inbound_do_qdio_start_time; 3383 if (rc) { 3384 QETH_CARD_TEXT(card, 2, "qinberr"); 3385 } 3386 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3387 QDIO_MAX_BUFFERS_PER_Q; 3388 } 3389 } 3390 3391 static void qeth_buffer_reclaim_work(struct work_struct *work) 3392 { 3393 struct qeth_card *card = container_of(work, struct qeth_card, 3394 buffer_reclaim_work.work); 3395 3396 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3397 qeth_queue_input_buffer(card, card->reclaim_index); 3398 } 3399 3400 static void qeth_handle_send_error(struct qeth_card *card, 3401 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3402 { 3403 int sbalf15 = buffer->buffer->element[15].sflags; 3404 3405 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3406 if (card->info.type == QETH_CARD_TYPE_IQD) { 3407 if (sbalf15 == 0) { 3408 qdio_err = 0; 3409 } else { 3410 qdio_err = 1; 3411 } 3412 } 3413 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3414 3415 if (!qdio_err) 3416 return; 3417 3418 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3419 return; 3420 3421 QETH_CARD_TEXT(card, 1, "lnkfail"); 3422 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3423 (u16)qdio_err, (u8)sbalf15); 3424 } 3425 3426 /** 3427 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3428 * @queue: queue to check for packing buffer 3429 * 3430 * Returns number of buffers that were prepared for flush. 3431 */ 3432 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3433 { 3434 struct qeth_qdio_out_buffer *buffer; 3435 3436 buffer = queue->bufs[queue->next_buf_to_fill]; 3437 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3438 (buffer->next_element_to_fill > 0)) { 3439 /* it's a packing buffer */ 3440 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3441 queue->next_buf_to_fill = 3442 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3443 return 1; 3444 } 3445 return 0; 3446 } 3447 3448 /* 3449 * Switched to packing state if the number of used buffers on a queue 3450 * reaches a certain limit. 3451 */ 3452 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3453 { 3454 if (!queue->do_pack) { 3455 if (atomic_read(&queue->used_buffers) 3456 >= QETH_HIGH_WATERMARK_PACK){ 3457 /* switch non-PACKING -> PACKING */ 3458 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3459 if (queue->card->options.performance_stats) 3460 queue->card->perf_stats.sc_dp_p++; 3461 queue->do_pack = 1; 3462 } 3463 } 3464 } 3465 3466 /* 3467 * Switches from packing to non-packing mode. If there is a packing 3468 * buffer on the queue this buffer will be prepared to be flushed. 3469 * In that case 1 is returned to inform the caller. If no buffer 3470 * has to be flushed, zero is returned. 3471 */ 3472 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3473 { 3474 if (queue->do_pack) { 3475 if (atomic_read(&queue->used_buffers) 3476 <= QETH_LOW_WATERMARK_PACK) { 3477 /* switch PACKING -> non-PACKING */ 3478 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3479 if (queue->card->options.performance_stats) 3480 queue->card->perf_stats.sc_p_dp++; 3481 queue->do_pack = 0; 3482 return qeth_prep_flush_pack_buffer(queue); 3483 } 3484 } 3485 return 0; 3486 } 3487 3488 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3489 int count) 3490 { 3491 struct qeth_qdio_out_buffer *buf; 3492 int rc; 3493 int i; 3494 unsigned int qdio_flags; 3495 3496 for (i = index; i < index + count; ++i) { 3497 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3498 buf = queue->bufs[bidx]; 3499 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3500 SBAL_EFLAGS_LAST_ENTRY; 3501 3502 if (queue->bufstates) 3503 queue->bufstates[bidx].user = buf; 3504 3505 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3506 continue; 3507 3508 if (!queue->do_pack) { 3509 if ((atomic_read(&queue->used_buffers) >= 3510 (QETH_HIGH_WATERMARK_PACK - 3511 QETH_WATERMARK_PACK_FUZZ)) && 3512 !atomic_read(&queue->set_pci_flags_count)) { 3513 /* it's likely that we'll go to packing 3514 * mode soon */ 3515 atomic_inc(&queue->set_pci_flags_count); 3516 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3517 } 3518 } else { 3519 if (!atomic_read(&queue->set_pci_flags_count)) { 3520 /* 3521 * there's no outstanding PCI any more, so we 3522 * have to request a PCI to be sure the the PCI 3523 * will wake at some time in the future then we 3524 * can flush packed buffers that might still be 3525 * hanging around, which can happen if no 3526 * further send was requested by the stack 3527 */ 3528 atomic_inc(&queue->set_pci_flags_count); 3529 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3530 } 3531 } 3532 } 3533 3534 netif_trans_update(queue->card->dev); 3535 if (queue->card->options.performance_stats) { 3536 queue->card->perf_stats.outbound_do_qdio_cnt++; 3537 queue->card->perf_stats.outbound_do_qdio_start_time = 3538 qeth_get_micros(); 3539 } 3540 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3541 if (atomic_read(&queue->set_pci_flags_count)) 3542 qdio_flags |= QDIO_FLAG_PCI_OUT; 3543 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3544 queue->queue_no, index, count); 3545 if (queue->card->options.performance_stats) 3546 queue->card->perf_stats.outbound_do_qdio_time += 3547 qeth_get_micros() - 3548 queue->card->perf_stats.outbound_do_qdio_start_time; 3549 atomic_add(count, &queue->used_buffers); 3550 if (rc) { 3551 queue->card->stats.tx_errors += count; 3552 /* ignore temporary SIGA errors without busy condition */ 3553 if (rc == -ENOBUFS) 3554 return; 3555 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3556 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3557 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3558 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3559 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3560 3561 /* this must not happen under normal circumstances. if it 3562 * happens something is really wrong -> recover */ 3563 qeth_schedule_recovery(queue->card); 3564 return; 3565 } 3566 if (queue->card->options.performance_stats) 3567 queue->card->perf_stats.bufs_sent += count; 3568 } 3569 3570 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3571 { 3572 int index; 3573 int flush_cnt = 0; 3574 int q_was_packing = 0; 3575 3576 /* 3577 * check if weed have to switch to non-packing mode or if 3578 * we have to get a pci flag out on the queue 3579 */ 3580 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3581 !atomic_read(&queue->set_pci_flags_count)) { 3582 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3583 QETH_OUT_Q_UNLOCKED) { 3584 /* 3585 * If we get in here, there was no action in 3586 * do_send_packet. So, we check if there is a 3587 * packing buffer to be flushed here. 3588 */ 3589 netif_stop_queue(queue->card->dev); 3590 index = queue->next_buf_to_fill; 3591 q_was_packing = queue->do_pack; 3592 /* queue->do_pack may change */ 3593 barrier(); 3594 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3595 if (!flush_cnt && 3596 !atomic_read(&queue->set_pci_flags_count)) 3597 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3598 if (queue->card->options.performance_stats && 3599 q_was_packing) 3600 queue->card->perf_stats.bufs_sent_pack += 3601 flush_cnt; 3602 if (flush_cnt) 3603 qeth_flush_buffers(queue, index, flush_cnt); 3604 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3605 } 3606 } 3607 } 3608 3609 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3610 unsigned long card_ptr) 3611 { 3612 struct qeth_card *card = (struct qeth_card *)card_ptr; 3613 3614 if (card->dev && (card->dev->flags & IFF_UP)) 3615 napi_schedule(&card->napi); 3616 } 3617 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3618 3619 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3620 { 3621 int rc; 3622 3623 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3624 rc = -1; 3625 goto out; 3626 } else { 3627 if (card->options.cq == cq) { 3628 rc = 0; 3629 goto out; 3630 } 3631 3632 if (card->state != CARD_STATE_DOWN && 3633 card->state != CARD_STATE_RECOVER) { 3634 rc = -1; 3635 goto out; 3636 } 3637 3638 qeth_free_qdio_buffers(card); 3639 card->options.cq = cq; 3640 rc = 0; 3641 } 3642 out: 3643 return rc; 3644 3645 } 3646 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3647 3648 3649 static void qeth_qdio_cq_handler(struct qeth_card *card, 3650 unsigned int qdio_err, 3651 unsigned int queue, int first_element, int count) { 3652 struct qeth_qdio_q *cq = card->qdio.c_q; 3653 int i; 3654 int rc; 3655 3656 if (!qeth_is_cq(card, queue)) 3657 goto out; 3658 3659 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3660 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3661 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3662 3663 if (qdio_err) { 3664 netif_stop_queue(card->dev); 3665 qeth_schedule_recovery(card); 3666 goto out; 3667 } 3668 3669 if (card->options.performance_stats) { 3670 card->perf_stats.cq_cnt++; 3671 card->perf_stats.cq_start_time = qeth_get_micros(); 3672 } 3673 3674 for (i = first_element; i < first_element + count; ++i) { 3675 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3676 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3677 int e; 3678 3679 e = 0; 3680 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3681 buffer->element[e].addr) { 3682 unsigned long phys_aob_addr; 3683 3684 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3685 qeth_qdio_handle_aob(card, phys_aob_addr); 3686 buffer->element[e].addr = NULL; 3687 buffer->element[e].eflags = 0; 3688 buffer->element[e].sflags = 0; 3689 buffer->element[e].length = 0; 3690 3691 ++e; 3692 } 3693 3694 buffer->element[15].eflags = 0; 3695 buffer->element[15].sflags = 0; 3696 } 3697 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3698 card->qdio.c_q->next_buf_to_init, 3699 count); 3700 if (rc) { 3701 dev_warn(&card->gdev->dev, 3702 "QDIO reported an error, rc=%i\n", rc); 3703 QETH_CARD_TEXT(card, 2, "qcqherr"); 3704 } 3705 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3706 + count) % QDIO_MAX_BUFFERS_PER_Q; 3707 3708 netif_wake_queue(card->dev); 3709 3710 if (card->options.performance_stats) { 3711 int delta_t = qeth_get_micros(); 3712 delta_t -= card->perf_stats.cq_start_time; 3713 card->perf_stats.cq_time += delta_t; 3714 } 3715 out: 3716 return; 3717 } 3718 3719 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3720 unsigned int queue, int first_elem, int count, 3721 unsigned long card_ptr) 3722 { 3723 struct qeth_card *card = (struct qeth_card *)card_ptr; 3724 3725 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3726 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3727 3728 if (qeth_is_cq(card, queue)) 3729 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3730 else if (qdio_err) 3731 qeth_schedule_recovery(card); 3732 3733 3734 } 3735 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3736 3737 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3738 unsigned int qdio_error, int __queue, int first_element, 3739 int count, unsigned long card_ptr) 3740 { 3741 struct qeth_card *card = (struct qeth_card *) card_ptr; 3742 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3743 struct qeth_qdio_out_buffer *buffer; 3744 int i; 3745 3746 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3747 if (qdio_error & QDIO_ERROR_FATAL) { 3748 QETH_CARD_TEXT(card, 2, "achkcond"); 3749 netif_stop_queue(card->dev); 3750 qeth_schedule_recovery(card); 3751 return; 3752 } 3753 if (card->options.performance_stats) { 3754 card->perf_stats.outbound_handler_cnt++; 3755 card->perf_stats.outbound_handler_start_time = 3756 qeth_get_micros(); 3757 } 3758 for (i = first_element; i < (first_element + count); ++i) { 3759 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3760 buffer = queue->bufs[bidx]; 3761 qeth_handle_send_error(card, buffer, qdio_error); 3762 3763 if (queue->bufstates && 3764 (queue->bufstates[bidx].flags & 3765 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3766 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3767 3768 if (atomic_cmpxchg(&buffer->state, 3769 QETH_QDIO_BUF_PRIMED, 3770 QETH_QDIO_BUF_PENDING) == 3771 QETH_QDIO_BUF_PRIMED) { 3772 qeth_notify_skbs(queue, buffer, 3773 TX_NOTIFY_PENDING); 3774 } 3775 buffer->aob = queue->bufstates[bidx].aob; 3776 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3777 QETH_CARD_TEXT(queue->card, 5, "aob"); 3778 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3779 virt_to_phys(buffer->aob)); 3780 if (qeth_init_qdio_out_buf(queue, bidx)) { 3781 QETH_CARD_TEXT(card, 2, "outofbuf"); 3782 qeth_schedule_recovery(card); 3783 } 3784 } else { 3785 if (card->options.cq == QETH_CQ_ENABLED) { 3786 enum iucv_tx_notify n; 3787 3788 n = qeth_compute_cq_notification( 3789 buffer->buffer->element[15].sflags, 0); 3790 qeth_notify_skbs(queue, buffer, n); 3791 } 3792 3793 qeth_clear_output_buffer(queue, buffer, 3794 QETH_QDIO_BUF_EMPTY); 3795 } 3796 qeth_cleanup_handled_pending(queue, bidx, 0); 3797 } 3798 atomic_sub(count, &queue->used_buffers); 3799 /* check if we need to do something on this outbound queue */ 3800 if (card->info.type != QETH_CARD_TYPE_IQD) 3801 qeth_check_outbound_queue(queue); 3802 3803 netif_wake_queue(queue->card->dev); 3804 if (card->options.performance_stats) 3805 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3806 card->perf_stats.outbound_handler_start_time; 3807 } 3808 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3809 3810 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3811 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3812 { 3813 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3814 return 2; 3815 return queue_num; 3816 } 3817 3818 /** 3819 * Note: Function assumes that we have 4 outbound queues. 3820 */ 3821 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3822 int ipv, int cast_type) 3823 { 3824 __be16 *tci; 3825 u8 tos; 3826 3827 if (cast_type && card->info.is_multicast_different) 3828 return card->info.is_multicast_different & 3829 (card->qdio.no_out_queues - 1); 3830 3831 switch (card->qdio.do_prio_queueing) { 3832 case QETH_PRIO_Q_ING_TOS: 3833 case QETH_PRIO_Q_ING_PREC: 3834 switch (ipv) { 3835 case 4: 3836 tos = ipv4_get_dsfield(ip_hdr(skb)); 3837 break; 3838 case 6: 3839 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3840 break; 3841 default: 3842 return card->qdio.default_out_queue; 3843 } 3844 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3845 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3846 if (tos & IPTOS_MINCOST) 3847 return qeth_cut_iqd_prio(card, 3); 3848 if (tos & IPTOS_RELIABILITY) 3849 return 2; 3850 if (tos & IPTOS_THROUGHPUT) 3851 return 1; 3852 if (tos & IPTOS_LOWDELAY) 3853 return 0; 3854 break; 3855 case QETH_PRIO_Q_ING_SKB: 3856 if (skb->priority > 5) 3857 return 0; 3858 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3859 case QETH_PRIO_Q_ING_VLAN: 3860 tci = &((struct ethhdr *)skb->data)->h_proto; 3861 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3862 return qeth_cut_iqd_prio(card, 3863 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3864 break; 3865 default: 3866 break; 3867 } 3868 return card->qdio.default_out_queue; 3869 } 3870 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3871 3872 /** 3873 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3874 * @skb: SKB address 3875 * 3876 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3877 * fragmented part of the SKB. Returns zero for linear SKB. 3878 */ 3879 int qeth_get_elements_for_frags(struct sk_buff *skb) 3880 { 3881 int cnt, elements = 0; 3882 3883 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3884 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3885 3886 elements += qeth_get_elements_for_range( 3887 (addr_t)skb_frag_address(frag), 3888 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3889 } 3890 return elements; 3891 } 3892 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3893 3894 /** 3895 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3896 * @card: qeth card structure, to check max. elems. 3897 * @skb: SKB address 3898 * @extra_elems: extra elems needed, to check against max. 3899 * @data_offset: range starts at skb->data + data_offset 3900 * 3901 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3902 * skb data, including linear part and fragments. Checks if the result plus 3903 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3904 * Note: extra_elems is not included in the returned result. 3905 */ 3906 int qeth_get_elements_no(struct qeth_card *card, 3907 struct sk_buff *skb, int extra_elems, int data_offset) 3908 { 3909 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3910 int elements = qeth_get_elements_for_frags(skb); 3911 addr_t start = (addr_t)skb->data + data_offset; 3912 3913 if (start != end) 3914 elements += qeth_get_elements_for_range(start, end); 3915 3916 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3917 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3918 "(Number=%d / Length=%d). Discarded.\n", 3919 elements + extra_elems, skb->len); 3920 return 0; 3921 } 3922 return elements; 3923 } 3924 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3925 3926 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3927 { 3928 int hroom, inpage, rest; 3929 3930 if (((unsigned long)skb->data & PAGE_MASK) != 3931 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3932 hroom = skb_headroom(skb); 3933 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3934 rest = len - inpage; 3935 if (rest > hroom) 3936 return 1; 3937 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3938 skb->data -= rest; 3939 skb->tail -= rest; 3940 *hdr = (struct qeth_hdr *)skb->data; 3941 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3942 } 3943 return 0; 3944 } 3945 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3946 3947 /** 3948 * qeth_push_hdr() - push a qeth_hdr onto an skb. 3949 * @skb: skb that the qeth_hdr should be pushed onto. 3950 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3951 * it contains a valid pointer to a qeth_hdr. 3952 * @len: length of the hdr that needs to be pushed on. 3953 * 3954 * Returns the pushed length. If the header can't be pushed on 3955 * (eg. because it would cross a page boundary), it is allocated from 3956 * the cache instead and 0 is returned. 3957 * Error to create the hdr is indicated by returning with < 0. 3958 */ 3959 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len) 3960 { 3961 if (skb_headroom(skb) >= len && 3962 qeth_get_elements_for_range((addr_t)skb->data - len, 3963 (addr_t)skb->data) == 1) { 3964 *hdr = skb_push(skb, len); 3965 return len; 3966 } 3967 /* fall back */ 3968 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3969 if (!*hdr) 3970 return -ENOMEM; 3971 return 0; 3972 } 3973 EXPORT_SYMBOL_GPL(qeth_push_hdr); 3974 3975 static void __qeth_fill_buffer(struct sk_buff *skb, 3976 struct qeth_qdio_out_buffer *buf, 3977 bool is_first_elem, unsigned int offset) 3978 { 3979 struct qdio_buffer *buffer = buf->buffer; 3980 int element = buf->next_element_to_fill; 3981 int length = skb_headlen(skb) - offset; 3982 char *data = skb->data + offset; 3983 int length_here, cnt; 3984 3985 /* map linear part into buffer element(s) */ 3986 while (length > 0) { 3987 /* length_here is the remaining amount of data in this page */ 3988 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3989 if (length < length_here) 3990 length_here = length; 3991 3992 buffer->element[element].addr = data; 3993 buffer->element[element].length = length_here; 3994 length -= length_here; 3995 if (is_first_elem) { 3996 is_first_elem = false; 3997 if (length || skb_is_nonlinear(skb)) 3998 /* skb needs additional elements */ 3999 buffer->element[element].eflags = 4000 SBAL_EFLAGS_FIRST_FRAG; 4001 else 4002 buffer->element[element].eflags = 0; 4003 } else { 4004 buffer->element[element].eflags = 4005 SBAL_EFLAGS_MIDDLE_FRAG; 4006 } 4007 data += length_here; 4008 element++; 4009 } 4010 4011 /* map page frags into buffer element(s) */ 4012 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 4013 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 4014 4015 data = skb_frag_address(frag); 4016 length = skb_frag_size(frag); 4017 while (length > 0) { 4018 length_here = PAGE_SIZE - 4019 ((unsigned long) data % PAGE_SIZE); 4020 if (length < length_here) 4021 length_here = length; 4022 4023 buffer->element[element].addr = data; 4024 buffer->element[element].length = length_here; 4025 buffer->element[element].eflags = 4026 SBAL_EFLAGS_MIDDLE_FRAG; 4027 length -= length_here; 4028 data += length_here; 4029 element++; 4030 } 4031 } 4032 4033 if (buffer->element[element - 1].eflags) 4034 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 4035 buf->next_element_to_fill = element; 4036 } 4037 4038 /** 4039 * qeth_fill_buffer() - map skb into an output buffer 4040 * @queue: QDIO queue to submit the buffer on 4041 * @buf: buffer to transport the skb 4042 * @skb: skb to map into the buffer 4043 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 4044 * from qeth_core_header_cache. 4045 * @offset: when mapping the skb, start at skb->data + offset 4046 * @hd_len: if > 0, build a dedicated header element of this size 4047 */ 4048 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 4049 struct qeth_qdio_out_buffer *buf, 4050 struct sk_buff *skb, struct qeth_hdr *hdr, 4051 unsigned int offset, unsigned int hd_len) 4052 { 4053 struct qdio_buffer *buffer = buf->buffer; 4054 bool is_first_elem = true; 4055 int flush_cnt = 0; 4056 4057 refcount_inc(&skb->users); 4058 skb_queue_tail(&buf->skb_list, skb); 4059 4060 /* build dedicated header element */ 4061 if (hd_len) { 4062 int element = buf->next_element_to_fill; 4063 is_first_elem = false; 4064 4065 buffer->element[element].addr = hdr; 4066 buffer->element[element].length = hd_len; 4067 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4068 /* remember to free cache-allocated qeth_hdr: */ 4069 buf->is_header[element] = ((void *)hdr != skb->data); 4070 buf->next_element_to_fill++; 4071 } 4072 4073 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 4074 4075 if (!queue->do_pack) { 4076 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4077 /* set state to PRIMED -> will be flushed */ 4078 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4079 flush_cnt = 1; 4080 } else { 4081 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4082 if (queue->card->options.performance_stats) 4083 queue->card->perf_stats.skbs_sent_pack++; 4084 if (buf->next_element_to_fill >= 4085 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4086 /* 4087 * packed buffer if full -> set state PRIMED 4088 * -> will be flushed 4089 */ 4090 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4091 flush_cnt = 1; 4092 } 4093 } 4094 return flush_cnt; 4095 } 4096 4097 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4098 struct qeth_hdr *hdr, unsigned int offset, 4099 unsigned int hd_len) 4100 { 4101 int index = queue->next_buf_to_fill; 4102 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 4103 4104 /* 4105 * check if buffer is empty to make sure that we do not 'overtake' 4106 * ourselves and try to fill a buffer that is already primed 4107 */ 4108 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4109 return -EBUSY; 4110 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 4111 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4112 qeth_flush_buffers(queue, index, 1); 4113 return 0; 4114 } 4115 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4116 4117 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4118 struct sk_buff *skb, struct qeth_hdr *hdr, 4119 unsigned int offset, unsigned int hd_len, 4120 int elements_needed) 4121 { 4122 struct qeth_qdio_out_buffer *buffer; 4123 int start_index; 4124 int flush_count = 0; 4125 int do_pack = 0; 4126 int tmp; 4127 int rc = 0; 4128 4129 /* spin until we get the queue ... */ 4130 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4131 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4132 start_index = queue->next_buf_to_fill; 4133 buffer = queue->bufs[queue->next_buf_to_fill]; 4134 /* 4135 * check if buffer is empty to make sure that we do not 'overtake' 4136 * ourselves and try to fill a buffer that is already primed 4137 */ 4138 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4139 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4140 return -EBUSY; 4141 } 4142 /* check if we need to switch packing state of this queue */ 4143 qeth_switch_to_packing_if_needed(queue); 4144 if (queue->do_pack) { 4145 do_pack = 1; 4146 /* does packet fit in current buffer? */ 4147 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4148 buffer->next_element_to_fill) < elements_needed) { 4149 /* ... no -> set state PRIMED */ 4150 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4151 flush_count++; 4152 queue->next_buf_to_fill = 4153 (queue->next_buf_to_fill + 1) % 4154 QDIO_MAX_BUFFERS_PER_Q; 4155 buffer = queue->bufs[queue->next_buf_to_fill]; 4156 /* we did a step forward, so check buffer state 4157 * again */ 4158 if (atomic_read(&buffer->state) != 4159 QETH_QDIO_BUF_EMPTY) { 4160 qeth_flush_buffers(queue, start_index, 4161 flush_count); 4162 atomic_set(&queue->state, 4163 QETH_OUT_Q_UNLOCKED); 4164 rc = -EBUSY; 4165 goto out; 4166 } 4167 } 4168 } 4169 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4170 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4171 QDIO_MAX_BUFFERS_PER_Q; 4172 flush_count += tmp; 4173 if (flush_count) 4174 qeth_flush_buffers(queue, start_index, flush_count); 4175 else if (!atomic_read(&queue->set_pci_flags_count)) 4176 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4177 /* 4178 * queue->state will go from LOCKED -> UNLOCKED or from 4179 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4180 * (switch packing state or flush buffer to get another pci flag out). 4181 * In that case we will enter this loop 4182 */ 4183 while (atomic_dec_return(&queue->state)) { 4184 start_index = queue->next_buf_to_fill; 4185 /* check if we can go back to non-packing state */ 4186 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4187 /* 4188 * check if we need to flush a packing buffer to get a pci 4189 * flag out on the queue 4190 */ 4191 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4192 tmp = qeth_prep_flush_pack_buffer(queue); 4193 if (tmp) { 4194 qeth_flush_buffers(queue, start_index, tmp); 4195 flush_count += tmp; 4196 } 4197 } 4198 out: 4199 /* at this point the queue is UNLOCKED again */ 4200 if (queue->card->options.performance_stats && do_pack) 4201 queue->card->perf_stats.bufs_sent_pack += flush_count; 4202 4203 return rc; 4204 } 4205 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4206 4207 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4208 struct qeth_reply *reply, unsigned long data) 4209 { 4210 struct qeth_ipa_cmd *cmd; 4211 struct qeth_ipacmd_setadpparms *setparms; 4212 4213 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4214 4215 cmd = (struct qeth_ipa_cmd *) data; 4216 setparms = &(cmd->data.setadapterparms); 4217 4218 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4219 if (cmd->hdr.return_code) { 4220 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4221 setparms->data.mode = SET_PROMISC_MODE_OFF; 4222 } 4223 card->info.promisc_mode = setparms->data.mode; 4224 return 0; 4225 } 4226 4227 void qeth_setadp_promisc_mode(struct qeth_card *card) 4228 { 4229 enum qeth_ipa_promisc_modes mode; 4230 struct net_device *dev = card->dev; 4231 struct qeth_cmd_buffer *iob; 4232 struct qeth_ipa_cmd *cmd; 4233 4234 QETH_CARD_TEXT(card, 4, "setprom"); 4235 4236 if (((dev->flags & IFF_PROMISC) && 4237 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4238 (!(dev->flags & IFF_PROMISC) && 4239 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4240 return; 4241 mode = SET_PROMISC_MODE_OFF; 4242 if (dev->flags & IFF_PROMISC) 4243 mode = SET_PROMISC_MODE_ON; 4244 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4245 4246 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4247 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4248 if (!iob) 4249 return; 4250 cmd = __ipa_cmd(iob); 4251 cmd->data.setadapterparms.data.mode = mode; 4252 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4253 } 4254 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4255 4256 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4257 { 4258 struct qeth_card *card; 4259 char dbf_text[15]; 4260 4261 card = dev->ml_priv; 4262 4263 QETH_CARD_TEXT(card, 4, "chgmtu"); 4264 sprintf(dbf_text, "%8x", new_mtu); 4265 QETH_CARD_TEXT(card, 4, dbf_text); 4266 4267 if (!qeth_mtu_is_valid(card, new_mtu)) 4268 return -EINVAL; 4269 dev->mtu = new_mtu; 4270 return 0; 4271 } 4272 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4273 4274 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4275 { 4276 struct qeth_card *card; 4277 4278 card = dev->ml_priv; 4279 4280 QETH_CARD_TEXT(card, 5, "getstat"); 4281 4282 return &card->stats; 4283 } 4284 EXPORT_SYMBOL_GPL(qeth_get_stats); 4285 4286 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4287 struct qeth_reply *reply, unsigned long data) 4288 { 4289 struct qeth_ipa_cmd *cmd; 4290 4291 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4292 4293 cmd = (struct qeth_ipa_cmd *) data; 4294 if (!card->options.layer2 || 4295 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4296 ether_addr_copy(card->dev->dev_addr, 4297 cmd->data.setadapterparms.data.change_addr.addr); 4298 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4299 } 4300 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4301 return 0; 4302 } 4303 4304 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4305 { 4306 int rc; 4307 struct qeth_cmd_buffer *iob; 4308 struct qeth_ipa_cmd *cmd; 4309 4310 QETH_CARD_TEXT(card, 4, "chgmac"); 4311 4312 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4313 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4314 sizeof(struct qeth_change_addr)); 4315 if (!iob) 4316 return -ENOMEM; 4317 cmd = __ipa_cmd(iob); 4318 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4319 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4320 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4321 card->dev->dev_addr); 4322 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4323 NULL); 4324 return rc; 4325 } 4326 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4327 4328 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4329 struct qeth_reply *reply, unsigned long data) 4330 { 4331 struct qeth_ipa_cmd *cmd; 4332 struct qeth_set_access_ctrl *access_ctrl_req; 4333 int fallback = *(int *)reply->param; 4334 4335 QETH_CARD_TEXT(card, 4, "setaccb"); 4336 4337 cmd = (struct qeth_ipa_cmd *) data; 4338 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4339 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4340 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4341 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4342 cmd->data.setadapterparms.hdr.return_code); 4343 if (cmd->data.setadapterparms.hdr.return_code != 4344 SET_ACCESS_CTRL_RC_SUCCESS) 4345 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4346 card->gdev->dev.kobj.name, 4347 access_ctrl_req->subcmd_code, 4348 cmd->data.setadapterparms.hdr.return_code); 4349 switch (cmd->data.setadapterparms.hdr.return_code) { 4350 case SET_ACCESS_CTRL_RC_SUCCESS: 4351 if (card->options.isolation == ISOLATION_MODE_NONE) { 4352 dev_info(&card->gdev->dev, 4353 "QDIO data connection isolation is deactivated\n"); 4354 } else { 4355 dev_info(&card->gdev->dev, 4356 "QDIO data connection isolation is activated\n"); 4357 } 4358 break; 4359 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4360 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4361 "deactivated\n", dev_name(&card->gdev->dev)); 4362 if (fallback) 4363 card->options.isolation = card->options.prev_isolation; 4364 break; 4365 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4366 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4367 " activated\n", dev_name(&card->gdev->dev)); 4368 if (fallback) 4369 card->options.isolation = card->options.prev_isolation; 4370 break; 4371 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4372 dev_err(&card->gdev->dev, "Adapter does not " 4373 "support QDIO data connection isolation\n"); 4374 break; 4375 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4376 dev_err(&card->gdev->dev, 4377 "Adapter is dedicated. " 4378 "QDIO data connection isolation not supported\n"); 4379 if (fallback) 4380 card->options.isolation = card->options.prev_isolation; 4381 break; 4382 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4383 dev_err(&card->gdev->dev, 4384 "TSO does not permit QDIO data connection isolation\n"); 4385 if (fallback) 4386 card->options.isolation = card->options.prev_isolation; 4387 break; 4388 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4389 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4390 "support reflective relay mode\n"); 4391 if (fallback) 4392 card->options.isolation = card->options.prev_isolation; 4393 break; 4394 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4395 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4396 "enabled at the adjacent switch port"); 4397 if (fallback) 4398 card->options.isolation = card->options.prev_isolation; 4399 break; 4400 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4401 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4402 "at the adjacent switch failed\n"); 4403 break; 4404 default: 4405 /* this should never happen */ 4406 if (fallback) 4407 card->options.isolation = card->options.prev_isolation; 4408 break; 4409 } 4410 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4411 return 0; 4412 } 4413 4414 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4415 enum qeth_ipa_isolation_modes isolation, int fallback) 4416 { 4417 int rc; 4418 struct qeth_cmd_buffer *iob; 4419 struct qeth_ipa_cmd *cmd; 4420 struct qeth_set_access_ctrl *access_ctrl_req; 4421 4422 QETH_CARD_TEXT(card, 4, "setacctl"); 4423 4424 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4425 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4426 4427 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4428 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4429 sizeof(struct qeth_set_access_ctrl)); 4430 if (!iob) 4431 return -ENOMEM; 4432 cmd = __ipa_cmd(iob); 4433 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4434 access_ctrl_req->subcmd_code = isolation; 4435 4436 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4437 &fallback); 4438 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4439 return rc; 4440 } 4441 4442 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4443 { 4444 int rc = 0; 4445 4446 QETH_CARD_TEXT(card, 4, "setactlo"); 4447 4448 if ((card->info.type == QETH_CARD_TYPE_OSD || 4449 card->info.type == QETH_CARD_TYPE_OSX) && 4450 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4451 rc = qeth_setadpparms_set_access_ctrl(card, 4452 card->options.isolation, fallback); 4453 if (rc) { 4454 QETH_DBF_MESSAGE(3, 4455 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4456 card->gdev->dev.kobj.name, 4457 rc); 4458 rc = -EOPNOTSUPP; 4459 } 4460 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4461 card->options.isolation = ISOLATION_MODE_NONE; 4462 4463 dev_err(&card->gdev->dev, "Adapter does not " 4464 "support QDIO data connection isolation\n"); 4465 rc = -EOPNOTSUPP; 4466 } 4467 return rc; 4468 } 4469 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4470 4471 void qeth_tx_timeout(struct net_device *dev) 4472 { 4473 struct qeth_card *card; 4474 4475 card = dev->ml_priv; 4476 QETH_CARD_TEXT(card, 4, "txtimeo"); 4477 card->stats.tx_errors++; 4478 qeth_schedule_recovery(card); 4479 } 4480 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4481 4482 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4483 { 4484 struct qeth_card *card = dev->ml_priv; 4485 int rc = 0; 4486 4487 switch (regnum) { 4488 case MII_BMCR: /* Basic mode control register */ 4489 rc = BMCR_FULLDPLX; 4490 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4491 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4492 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4493 rc |= BMCR_SPEED100; 4494 break; 4495 case MII_BMSR: /* Basic mode status register */ 4496 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4497 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4498 BMSR_100BASE4; 4499 break; 4500 case MII_PHYSID1: /* PHYS ID 1 */ 4501 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4502 dev->dev_addr[2]; 4503 rc = (rc >> 5) & 0xFFFF; 4504 break; 4505 case MII_PHYSID2: /* PHYS ID 2 */ 4506 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4507 break; 4508 case MII_ADVERTISE: /* Advertisement control reg */ 4509 rc = ADVERTISE_ALL; 4510 break; 4511 case MII_LPA: /* Link partner ability reg */ 4512 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4513 LPA_100BASE4 | LPA_LPACK; 4514 break; 4515 case MII_EXPANSION: /* Expansion register */ 4516 break; 4517 case MII_DCOUNTER: /* disconnect counter */ 4518 break; 4519 case MII_FCSCOUNTER: /* false carrier counter */ 4520 break; 4521 case MII_NWAYTEST: /* N-way auto-neg test register */ 4522 break; 4523 case MII_RERRCOUNTER: /* rx error counter */ 4524 rc = card->stats.rx_errors; 4525 break; 4526 case MII_SREVISION: /* silicon revision */ 4527 break; 4528 case MII_RESV1: /* reserved 1 */ 4529 break; 4530 case MII_LBRERROR: /* loopback, rx, bypass error */ 4531 break; 4532 case MII_PHYADDR: /* physical address */ 4533 break; 4534 case MII_RESV2: /* reserved 2 */ 4535 break; 4536 case MII_TPISTATUS: /* TPI status for 10mbps */ 4537 break; 4538 case MII_NCONFIG: /* network interface config */ 4539 break; 4540 default: 4541 break; 4542 } 4543 return rc; 4544 } 4545 4546 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4547 struct qeth_cmd_buffer *iob, int len, 4548 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4549 unsigned long), 4550 void *reply_param) 4551 { 4552 u16 s1, s2; 4553 4554 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4555 4556 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4557 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4558 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4559 /* adjust PDU length fields in IPA_PDU_HEADER */ 4560 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4561 s2 = (u32) len; 4562 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4563 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4564 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4565 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4566 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4567 reply_cb, reply_param); 4568 } 4569 4570 static int qeth_snmp_command_cb(struct qeth_card *card, 4571 struct qeth_reply *reply, unsigned long sdata) 4572 { 4573 struct qeth_ipa_cmd *cmd; 4574 struct qeth_arp_query_info *qinfo; 4575 struct qeth_snmp_cmd *snmp; 4576 unsigned char *data; 4577 __u16 data_len; 4578 4579 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4580 4581 cmd = (struct qeth_ipa_cmd *) sdata; 4582 data = (unsigned char *)((char *)cmd - reply->offset); 4583 qinfo = (struct qeth_arp_query_info *) reply->param; 4584 snmp = &cmd->data.setadapterparms.data.snmp; 4585 4586 if (cmd->hdr.return_code) { 4587 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4588 return 0; 4589 } 4590 if (cmd->data.setadapterparms.hdr.return_code) { 4591 cmd->hdr.return_code = 4592 cmd->data.setadapterparms.hdr.return_code; 4593 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4594 return 0; 4595 } 4596 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4597 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4598 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4599 else 4600 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4601 4602 /* check if there is enough room in userspace */ 4603 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4604 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4605 cmd->hdr.return_code = IPA_RC_ENOMEM; 4606 return 0; 4607 } 4608 QETH_CARD_TEXT_(card, 4, "snore%i", 4609 cmd->data.setadapterparms.hdr.used_total); 4610 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4611 cmd->data.setadapterparms.hdr.seq_no); 4612 /*copy entries to user buffer*/ 4613 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4614 memcpy(qinfo->udata + qinfo->udata_offset, 4615 (char *)snmp, 4616 data_len + offsetof(struct qeth_snmp_cmd, data)); 4617 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4618 } else { 4619 memcpy(qinfo->udata + qinfo->udata_offset, 4620 (char *)&snmp->request, data_len); 4621 } 4622 qinfo->udata_offset += data_len; 4623 /* check if all replies received ... */ 4624 QETH_CARD_TEXT_(card, 4, "srtot%i", 4625 cmd->data.setadapterparms.hdr.used_total); 4626 QETH_CARD_TEXT_(card, 4, "srseq%i", 4627 cmd->data.setadapterparms.hdr.seq_no); 4628 if (cmd->data.setadapterparms.hdr.seq_no < 4629 cmd->data.setadapterparms.hdr.used_total) 4630 return 1; 4631 return 0; 4632 } 4633 4634 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4635 { 4636 struct qeth_cmd_buffer *iob; 4637 struct qeth_ipa_cmd *cmd; 4638 struct qeth_snmp_ureq *ureq; 4639 unsigned int req_len; 4640 struct qeth_arp_query_info qinfo = {0, }; 4641 int rc = 0; 4642 4643 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4644 4645 if (card->info.guestlan) 4646 return -EOPNOTSUPP; 4647 4648 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4649 (!card->options.layer2)) { 4650 return -EOPNOTSUPP; 4651 } 4652 /* skip 4 bytes (data_len struct member) to get req_len */ 4653 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4654 return -EFAULT; 4655 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4656 sizeof(struct qeth_ipacmd_hdr) - 4657 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4658 return -EINVAL; 4659 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4660 if (IS_ERR(ureq)) { 4661 QETH_CARD_TEXT(card, 2, "snmpnome"); 4662 return PTR_ERR(ureq); 4663 } 4664 qinfo.udata_len = ureq->hdr.data_len; 4665 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4666 if (!qinfo.udata) { 4667 kfree(ureq); 4668 return -ENOMEM; 4669 } 4670 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4671 4672 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4673 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4674 if (!iob) { 4675 rc = -ENOMEM; 4676 goto out; 4677 } 4678 cmd = __ipa_cmd(iob); 4679 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4680 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4681 qeth_snmp_command_cb, (void *)&qinfo); 4682 if (rc) 4683 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4684 QETH_CARD_IFNAME(card), rc); 4685 else { 4686 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4687 rc = -EFAULT; 4688 } 4689 out: 4690 kfree(ureq); 4691 kfree(qinfo.udata); 4692 return rc; 4693 } 4694 4695 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4696 struct qeth_reply *reply, unsigned long data) 4697 { 4698 struct qeth_ipa_cmd *cmd; 4699 struct qeth_qoat_priv *priv; 4700 char *resdata; 4701 int resdatalen; 4702 4703 QETH_CARD_TEXT(card, 3, "qoatcb"); 4704 4705 cmd = (struct qeth_ipa_cmd *)data; 4706 priv = (struct qeth_qoat_priv *)reply->param; 4707 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4708 resdata = (char *)data + 28; 4709 4710 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4711 cmd->hdr.return_code = IPA_RC_FFFF; 4712 return 0; 4713 } 4714 4715 memcpy((priv->buffer + priv->response_len), resdata, 4716 resdatalen); 4717 priv->response_len += resdatalen; 4718 4719 if (cmd->data.setadapterparms.hdr.seq_no < 4720 cmd->data.setadapterparms.hdr.used_total) 4721 return 1; 4722 return 0; 4723 } 4724 4725 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4726 { 4727 int rc = 0; 4728 struct qeth_cmd_buffer *iob; 4729 struct qeth_ipa_cmd *cmd; 4730 struct qeth_query_oat *oat_req; 4731 struct qeth_query_oat_data oat_data; 4732 struct qeth_qoat_priv priv; 4733 void __user *tmp; 4734 4735 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4736 4737 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4738 rc = -EOPNOTSUPP; 4739 goto out; 4740 } 4741 4742 if (copy_from_user(&oat_data, udata, 4743 sizeof(struct qeth_query_oat_data))) { 4744 rc = -EFAULT; 4745 goto out; 4746 } 4747 4748 priv.buffer_len = oat_data.buffer_len; 4749 priv.response_len = 0; 4750 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4751 if (!priv.buffer) { 4752 rc = -ENOMEM; 4753 goto out; 4754 } 4755 4756 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4757 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4758 sizeof(struct qeth_query_oat)); 4759 if (!iob) { 4760 rc = -ENOMEM; 4761 goto out_free; 4762 } 4763 cmd = __ipa_cmd(iob); 4764 oat_req = &cmd->data.setadapterparms.data.query_oat; 4765 oat_req->subcmd_code = oat_data.command; 4766 4767 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4768 &priv); 4769 if (!rc) { 4770 if (is_compat_task()) 4771 tmp = compat_ptr(oat_data.ptr); 4772 else 4773 tmp = (void __user *)(unsigned long)oat_data.ptr; 4774 4775 if (copy_to_user(tmp, priv.buffer, 4776 priv.response_len)) { 4777 rc = -EFAULT; 4778 goto out_free; 4779 } 4780 4781 oat_data.response_len = priv.response_len; 4782 4783 if (copy_to_user(udata, &oat_data, 4784 sizeof(struct qeth_query_oat_data))) 4785 rc = -EFAULT; 4786 } else 4787 if (rc == IPA_RC_FFFF) 4788 rc = -EFAULT; 4789 4790 out_free: 4791 kfree(priv.buffer); 4792 out: 4793 return rc; 4794 } 4795 4796 static int qeth_query_card_info_cb(struct qeth_card *card, 4797 struct qeth_reply *reply, unsigned long data) 4798 { 4799 struct qeth_ipa_cmd *cmd; 4800 struct qeth_query_card_info *card_info; 4801 struct carrier_info *carrier_info; 4802 4803 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4804 carrier_info = (struct carrier_info *)reply->param; 4805 cmd = (struct qeth_ipa_cmd *)data; 4806 card_info = &cmd->data.setadapterparms.data.card_info; 4807 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4808 carrier_info->card_type = card_info->card_type; 4809 carrier_info->port_mode = card_info->port_mode; 4810 carrier_info->port_speed = card_info->port_speed; 4811 } 4812 4813 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4814 return 0; 4815 } 4816 4817 static int qeth_query_card_info(struct qeth_card *card, 4818 struct carrier_info *carrier_info) 4819 { 4820 struct qeth_cmd_buffer *iob; 4821 4822 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4823 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4824 return -EOPNOTSUPP; 4825 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4826 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4827 if (!iob) 4828 return -ENOMEM; 4829 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4830 (void *)carrier_info); 4831 } 4832 4833 /** 4834 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4835 * @card: pointer to a qeth_card 4836 * 4837 * Returns 4838 * 0, if a MAC address has been set for the card's netdevice 4839 * a return code, for various error conditions 4840 */ 4841 int qeth_vm_request_mac(struct qeth_card *card) 4842 { 4843 struct diag26c_mac_resp *response; 4844 struct diag26c_mac_req *request; 4845 struct ccw_dev_id id; 4846 int rc; 4847 4848 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4849 4850 if (!card->dev) 4851 return -ENODEV; 4852 4853 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4854 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4855 if (!request || !response) { 4856 rc = -ENOMEM; 4857 goto out; 4858 } 4859 4860 ccw_device_get_id(CARD_DDEV(card), &id); 4861 request->resp_buf_len = sizeof(*response); 4862 request->resp_version = DIAG26C_VERSION2; 4863 request->op_code = DIAG26C_GET_MAC; 4864 request->devno = id.devno; 4865 4866 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4867 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4868 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4869 if (rc) 4870 goto out; 4871 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4872 4873 if (request->resp_buf_len < sizeof(*response) || 4874 response->version != request->resp_version) { 4875 rc = -EIO; 4876 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4877 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4878 sizeof(request->resp_buf_len)); 4879 } else if (!is_valid_ether_addr(response->mac)) { 4880 rc = -EINVAL; 4881 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4882 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4883 } else { 4884 ether_addr_copy(card->dev->dev_addr, response->mac); 4885 } 4886 4887 out: 4888 kfree(response); 4889 kfree(request); 4890 return rc; 4891 } 4892 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4893 4894 static int qeth_get_qdio_q_format(struct qeth_card *card) 4895 { 4896 if (card->info.type == QETH_CARD_TYPE_IQD) 4897 return QDIO_IQDIO_QFMT; 4898 else 4899 return QDIO_QETH_QFMT; 4900 } 4901 4902 static void qeth_determine_capabilities(struct qeth_card *card) 4903 { 4904 int rc; 4905 int length; 4906 char *prcd; 4907 struct ccw_device *ddev; 4908 int ddev_offline = 0; 4909 4910 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4911 ddev = CARD_DDEV(card); 4912 if (!ddev->online) { 4913 ddev_offline = 1; 4914 rc = ccw_device_set_online(ddev); 4915 if (rc) { 4916 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4917 goto out; 4918 } 4919 } 4920 4921 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4922 if (rc) { 4923 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4924 dev_name(&card->gdev->dev), rc); 4925 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4926 goto out_offline; 4927 } 4928 qeth_configure_unitaddr(card, prcd); 4929 if (ddev_offline) 4930 qeth_configure_blkt_default(card, prcd); 4931 kfree(prcd); 4932 4933 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4934 if (rc) 4935 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4936 4937 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4938 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4939 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4940 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4941 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4942 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4943 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4944 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4945 dev_info(&card->gdev->dev, 4946 "Completion Queueing supported\n"); 4947 } else { 4948 card->options.cq = QETH_CQ_NOTAVAILABLE; 4949 } 4950 4951 4952 out_offline: 4953 if (ddev_offline == 1) 4954 ccw_device_set_offline(ddev); 4955 out: 4956 return; 4957 } 4958 4959 static void qeth_qdio_establish_cq(struct qeth_card *card, 4960 struct qdio_buffer **in_sbal_ptrs, 4961 void (**queue_start_poll) 4962 (struct ccw_device *, int, 4963 unsigned long)) 4964 { 4965 int i; 4966 4967 if (card->options.cq == QETH_CQ_ENABLED) { 4968 int offset = QDIO_MAX_BUFFERS_PER_Q * 4969 (card->qdio.no_in_queues - 1); 4970 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4971 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4972 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4973 } 4974 4975 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4976 } 4977 } 4978 4979 static int qeth_qdio_establish(struct qeth_card *card) 4980 { 4981 struct qdio_initialize init_data; 4982 char *qib_param_field; 4983 struct qdio_buffer **in_sbal_ptrs; 4984 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4985 struct qdio_buffer **out_sbal_ptrs; 4986 int i, j, k; 4987 int rc = 0; 4988 4989 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4990 4991 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4992 GFP_KERNEL); 4993 if (!qib_param_field) { 4994 rc = -ENOMEM; 4995 goto out_free_nothing; 4996 } 4997 4998 qeth_create_qib_param_field(card, qib_param_field); 4999 qeth_create_qib_param_field_blkt(card, qib_param_field); 5000 5001 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 5002 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 5003 GFP_KERNEL); 5004 if (!in_sbal_ptrs) { 5005 rc = -ENOMEM; 5006 goto out_free_qib_param; 5007 } 5008 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 5009 in_sbal_ptrs[i] = (struct qdio_buffer *) 5010 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 5011 } 5012 5013 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 5014 GFP_KERNEL); 5015 if (!queue_start_poll) { 5016 rc = -ENOMEM; 5017 goto out_free_in_sbals; 5018 } 5019 for (i = 0; i < card->qdio.no_in_queues; ++i) 5020 queue_start_poll[i] = card->discipline->start_poll; 5021 5022 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 5023 5024 out_sbal_ptrs = 5025 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 5026 sizeof(void *), GFP_KERNEL); 5027 if (!out_sbal_ptrs) { 5028 rc = -ENOMEM; 5029 goto out_free_queue_start_poll; 5030 } 5031 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 5032 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 5033 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 5034 card->qdio.out_qs[i]->bufs[j]->buffer); 5035 } 5036 5037 memset(&init_data, 0, sizeof(struct qdio_initialize)); 5038 init_data.cdev = CARD_DDEV(card); 5039 init_data.q_format = qeth_get_qdio_q_format(card); 5040 init_data.qib_param_field_format = 0; 5041 init_data.qib_param_field = qib_param_field; 5042 init_data.no_input_qs = card->qdio.no_in_queues; 5043 init_data.no_output_qs = card->qdio.no_out_queues; 5044 init_data.input_handler = card->discipline->input_handler; 5045 init_data.output_handler = card->discipline->output_handler; 5046 init_data.queue_start_poll_array = queue_start_poll; 5047 init_data.int_parm = (unsigned long) card; 5048 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 5049 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 5050 init_data.output_sbal_state_array = card->qdio.out_bufstates; 5051 init_data.scan_threshold = 5052 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 5053 5054 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 5055 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 5056 rc = qdio_allocate(&init_data); 5057 if (rc) { 5058 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5059 goto out; 5060 } 5061 rc = qdio_establish(&init_data); 5062 if (rc) { 5063 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5064 qdio_free(CARD_DDEV(card)); 5065 } 5066 } 5067 5068 switch (card->options.cq) { 5069 case QETH_CQ_ENABLED: 5070 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5071 break; 5072 case QETH_CQ_DISABLED: 5073 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5074 break; 5075 default: 5076 break; 5077 } 5078 out: 5079 kfree(out_sbal_ptrs); 5080 out_free_queue_start_poll: 5081 kfree(queue_start_poll); 5082 out_free_in_sbals: 5083 kfree(in_sbal_ptrs); 5084 out_free_qib_param: 5085 kfree(qib_param_field); 5086 out_free_nothing: 5087 return rc; 5088 } 5089 5090 static void qeth_core_free_card(struct qeth_card *card) 5091 { 5092 5093 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5094 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5095 qeth_clean_channel(&card->read); 5096 qeth_clean_channel(&card->write); 5097 qeth_free_qdio_buffers(card); 5098 unregister_service_level(&card->qeth_service_level); 5099 kfree(card); 5100 } 5101 5102 void qeth_trace_features(struct qeth_card *card) 5103 { 5104 QETH_CARD_TEXT(card, 2, "features"); 5105 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5106 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5107 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5108 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5109 sizeof(card->info.diagass_support)); 5110 } 5111 EXPORT_SYMBOL_GPL(qeth_trace_features); 5112 5113 static struct ccw_device_id qeth_ids[] = { 5114 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5115 .driver_info = QETH_CARD_TYPE_OSD}, 5116 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5117 .driver_info = QETH_CARD_TYPE_IQD}, 5118 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5119 .driver_info = QETH_CARD_TYPE_OSN}, 5120 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5121 .driver_info = QETH_CARD_TYPE_OSM}, 5122 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5123 .driver_info = QETH_CARD_TYPE_OSX}, 5124 {}, 5125 }; 5126 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5127 5128 static struct ccw_driver qeth_ccw_driver = { 5129 .driver = { 5130 .owner = THIS_MODULE, 5131 .name = "qeth", 5132 }, 5133 .ids = qeth_ids, 5134 .probe = ccwgroup_probe_ccwdev, 5135 .remove = ccwgroup_remove_ccwdev, 5136 }; 5137 5138 int qeth_core_hardsetup_card(struct qeth_card *card) 5139 { 5140 int retries = 3; 5141 int rc; 5142 5143 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5144 atomic_set(&card->force_alloc_skb, 0); 5145 qeth_update_from_chp_desc(card); 5146 retry: 5147 if (retries < 3) 5148 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5149 dev_name(&card->gdev->dev)); 5150 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5151 ccw_device_set_offline(CARD_DDEV(card)); 5152 ccw_device_set_offline(CARD_WDEV(card)); 5153 ccw_device_set_offline(CARD_RDEV(card)); 5154 qdio_free(CARD_DDEV(card)); 5155 rc = ccw_device_set_online(CARD_RDEV(card)); 5156 if (rc) 5157 goto retriable; 5158 rc = ccw_device_set_online(CARD_WDEV(card)); 5159 if (rc) 5160 goto retriable; 5161 rc = ccw_device_set_online(CARD_DDEV(card)); 5162 if (rc) 5163 goto retriable; 5164 retriable: 5165 if (rc == -ERESTARTSYS) { 5166 QETH_DBF_TEXT(SETUP, 2, "break1"); 5167 return rc; 5168 } else if (rc) { 5169 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5170 if (--retries < 0) 5171 goto out; 5172 else 5173 goto retry; 5174 } 5175 qeth_determine_capabilities(card); 5176 qeth_init_tokens(card); 5177 qeth_init_func_level(card); 5178 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5179 if (rc == -ERESTARTSYS) { 5180 QETH_DBF_TEXT(SETUP, 2, "break2"); 5181 return rc; 5182 } else if (rc) { 5183 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5184 if (--retries < 0) 5185 goto out; 5186 else 5187 goto retry; 5188 } 5189 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5190 if (rc == -ERESTARTSYS) { 5191 QETH_DBF_TEXT(SETUP, 2, "break3"); 5192 return rc; 5193 } else if (rc) { 5194 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5195 if (--retries < 0) 5196 goto out; 5197 else 5198 goto retry; 5199 } 5200 card->read_or_write_problem = 0; 5201 rc = qeth_mpc_initialize(card); 5202 if (rc) { 5203 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5204 goto out; 5205 } 5206 5207 rc = qeth_send_startlan(card); 5208 if (rc) { 5209 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5210 if (rc == IPA_RC_LAN_OFFLINE) { 5211 dev_warn(&card->gdev->dev, 5212 "The LAN is offline\n"); 5213 card->lan_online = 0; 5214 } else { 5215 rc = -ENODEV; 5216 goto out; 5217 } 5218 } else 5219 card->lan_online = 1; 5220 5221 card->options.ipa4.supported_funcs = 0; 5222 card->options.ipa6.supported_funcs = 0; 5223 card->options.adp.supported_funcs = 0; 5224 card->options.sbp.supported_funcs = 0; 5225 card->info.diagass_support = 0; 5226 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5227 if (rc == -ENOMEM) 5228 goto out; 5229 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5230 rc = qeth_query_setadapterparms(card); 5231 if (rc < 0) { 5232 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5233 goto out; 5234 } 5235 } 5236 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5237 rc = qeth_query_setdiagass(card); 5238 if (rc < 0) { 5239 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5240 goto out; 5241 } 5242 } 5243 return 0; 5244 out: 5245 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5246 "an error on the device\n"); 5247 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5248 dev_name(&card->gdev->dev), rc); 5249 return rc; 5250 } 5251 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5252 5253 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5254 struct sk_buff *skb, int offset, int data_len) 5255 { 5256 struct page *page = virt_to_page(element->addr); 5257 unsigned int next_frag; 5258 5259 /* first fill the linear space */ 5260 if (!skb->len) { 5261 unsigned int linear = min(data_len, skb_tailroom(skb)); 5262 5263 skb_put_data(skb, element->addr + offset, linear); 5264 data_len -= linear; 5265 if (!data_len) 5266 return; 5267 offset += linear; 5268 /* fall through to add page frag for remaining data */ 5269 } 5270 5271 next_frag = skb_shinfo(skb)->nr_frags; 5272 get_page(page); 5273 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5274 } 5275 5276 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5277 { 5278 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5279 } 5280 5281 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5282 struct qeth_qdio_buffer *qethbuffer, 5283 struct qdio_buffer_element **__element, int *__offset, 5284 struct qeth_hdr **hdr) 5285 { 5286 struct qdio_buffer_element *element = *__element; 5287 struct qdio_buffer *buffer = qethbuffer->buffer; 5288 int offset = *__offset; 5289 struct sk_buff *skb; 5290 int skb_len = 0; 5291 void *data_ptr; 5292 int data_len; 5293 int headroom = 0; 5294 int use_rx_sg = 0; 5295 5296 /* qeth_hdr must not cross element boundaries */ 5297 while (element->length < offset + sizeof(struct qeth_hdr)) { 5298 if (qeth_is_last_sbale(element)) 5299 return NULL; 5300 element++; 5301 offset = 0; 5302 } 5303 *hdr = element->addr + offset; 5304 5305 offset += sizeof(struct qeth_hdr); 5306 switch ((*hdr)->hdr.l2.id) { 5307 case QETH_HEADER_TYPE_LAYER2: 5308 skb_len = (*hdr)->hdr.l2.pkt_length; 5309 break; 5310 case QETH_HEADER_TYPE_LAYER3: 5311 skb_len = (*hdr)->hdr.l3.length; 5312 headroom = ETH_HLEN; 5313 break; 5314 case QETH_HEADER_TYPE_OSN: 5315 skb_len = (*hdr)->hdr.osn.pdu_length; 5316 headroom = sizeof(struct qeth_hdr); 5317 break; 5318 default: 5319 break; 5320 } 5321 5322 if (!skb_len) 5323 return NULL; 5324 5325 if (((skb_len >= card->options.rx_sg_cb) && 5326 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5327 (!atomic_read(&card->force_alloc_skb))) || 5328 (card->options.cq == QETH_CQ_ENABLED)) 5329 use_rx_sg = 1; 5330 5331 if (use_rx_sg && qethbuffer->rx_skb) { 5332 /* QETH_CQ_ENABLED only: */ 5333 skb = qethbuffer->rx_skb; 5334 qethbuffer->rx_skb = NULL; 5335 } else { 5336 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5337 5338 skb = napi_alloc_skb(&card->napi, linear + headroom); 5339 } 5340 if (!skb) 5341 goto no_mem; 5342 if (headroom) 5343 skb_reserve(skb, headroom); 5344 5345 data_ptr = element->addr + offset; 5346 while (skb_len) { 5347 data_len = min(skb_len, (int)(element->length - offset)); 5348 if (data_len) { 5349 if (use_rx_sg) 5350 qeth_create_skb_frag(element, skb, offset, 5351 data_len); 5352 else 5353 skb_put_data(skb, data_ptr, data_len); 5354 } 5355 skb_len -= data_len; 5356 if (skb_len) { 5357 if (qeth_is_last_sbale(element)) { 5358 QETH_CARD_TEXT(card, 4, "unexeob"); 5359 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5360 dev_kfree_skb_any(skb); 5361 card->stats.rx_errors++; 5362 return NULL; 5363 } 5364 element++; 5365 offset = 0; 5366 data_ptr = element->addr; 5367 } else { 5368 offset += data_len; 5369 } 5370 } 5371 *__element = element; 5372 *__offset = offset; 5373 if (use_rx_sg && card->options.performance_stats) { 5374 card->perf_stats.sg_skbs_rx++; 5375 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5376 } 5377 return skb; 5378 no_mem: 5379 if (net_ratelimit()) { 5380 QETH_CARD_TEXT(card, 2, "noskbmem"); 5381 } 5382 card->stats.rx_dropped++; 5383 return NULL; 5384 } 5385 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5386 5387 int qeth_poll(struct napi_struct *napi, int budget) 5388 { 5389 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5390 int work_done = 0; 5391 struct qeth_qdio_buffer *buffer; 5392 int done; 5393 int new_budget = budget; 5394 5395 if (card->options.performance_stats) { 5396 card->perf_stats.inbound_cnt++; 5397 card->perf_stats.inbound_start_time = qeth_get_micros(); 5398 } 5399 5400 while (1) { 5401 if (!card->rx.b_count) { 5402 card->rx.qdio_err = 0; 5403 card->rx.b_count = qdio_get_next_buffers( 5404 card->data.ccwdev, 0, &card->rx.b_index, 5405 &card->rx.qdio_err); 5406 if (card->rx.b_count <= 0) { 5407 card->rx.b_count = 0; 5408 break; 5409 } 5410 card->rx.b_element = 5411 &card->qdio.in_q->bufs[card->rx.b_index] 5412 .buffer->element[0]; 5413 card->rx.e_offset = 0; 5414 } 5415 5416 while (card->rx.b_count) { 5417 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5418 if (!(card->rx.qdio_err && 5419 qeth_check_qdio_errors(card, buffer->buffer, 5420 card->rx.qdio_err, "qinerr"))) 5421 work_done += 5422 card->discipline->process_rx_buffer( 5423 card, new_budget, &done); 5424 else 5425 done = 1; 5426 5427 if (done) { 5428 if (card->options.performance_stats) 5429 card->perf_stats.bufs_rec++; 5430 qeth_put_buffer_pool_entry(card, 5431 buffer->pool_entry); 5432 qeth_queue_input_buffer(card, card->rx.b_index); 5433 card->rx.b_count--; 5434 if (card->rx.b_count) { 5435 card->rx.b_index = 5436 (card->rx.b_index + 1) % 5437 QDIO_MAX_BUFFERS_PER_Q; 5438 card->rx.b_element = 5439 &card->qdio.in_q 5440 ->bufs[card->rx.b_index] 5441 .buffer->element[0]; 5442 card->rx.e_offset = 0; 5443 } 5444 } 5445 5446 if (work_done >= budget) 5447 goto out; 5448 else 5449 new_budget = budget - work_done; 5450 } 5451 } 5452 5453 napi_complete_done(napi, work_done); 5454 if (qdio_start_irq(card->data.ccwdev, 0)) 5455 napi_schedule(&card->napi); 5456 out: 5457 if (card->options.performance_stats) 5458 card->perf_stats.inbound_time += qeth_get_micros() - 5459 card->perf_stats.inbound_start_time; 5460 return work_done; 5461 } 5462 EXPORT_SYMBOL_GPL(qeth_poll); 5463 5464 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5465 { 5466 if (!cmd->hdr.return_code) 5467 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5468 return cmd->hdr.return_code; 5469 } 5470 5471 int qeth_setassparms_cb(struct qeth_card *card, 5472 struct qeth_reply *reply, unsigned long data) 5473 { 5474 struct qeth_ipa_cmd *cmd; 5475 5476 QETH_CARD_TEXT(card, 4, "defadpcb"); 5477 5478 cmd = (struct qeth_ipa_cmd *) data; 5479 if (cmd->hdr.return_code == 0) { 5480 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5481 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5482 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5483 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5484 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5485 } 5486 return 0; 5487 } 5488 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5489 5490 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5491 enum qeth_ipa_funcs ipa_func, 5492 __u16 cmd_code, __u16 len, 5493 enum qeth_prot_versions prot) 5494 { 5495 struct qeth_cmd_buffer *iob; 5496 struct qeth_ipa_cmd *cmd; 5497 5498 QETH_CARD_TEXT(card, 4, "getasscm"); 5499 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5500 5501 if (iob) { 5502 cmd = __ipa_cmd(iob); 5503 cmd->data.setassparms.hdr.assist_no = ipa_func; 5504 cmd->data.setassparms.hdr.length = 8 + len; 5505 cmd->data.setassparms.hdr.command_code = cmd_code; 5506 cmd->data.setassparms.hdr.return_code = 0; 5507 cmd->data.setassparms.hdr.seq_no = 0; 5508 } 5509 5510 return iob; 5511 } 5512 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5513 5514 int qeth_send_setassparms(struct qeth_card *card, 5515 struct qeth_cmd_buffer *iob, __u16 len, long data, 5516 int (*reply_cb)(struct qeth_card *, 5517 struct qeth_reply *, unsigned long), 5518 void *reply_param) 5519 { 5520 int rc; 5521 struct qeth_ipa_cmd *cmd; 5522 5523 QETH_CARD_TEXT(card, 4, "sendassp"); 5524 5525 cmd = __ipa_cmd(iob); 5526 if (len <= sizeof(__u32)) 5527 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5528 else /* (len > sizeof(__u32)) */ 5529 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5530 5531 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5532 return rc; 5533 } 5534 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5535 5536 int qeth_send_simple_setassparms(struct qeth_card *card, 5537 enum qeth_ipa_funcs ipa_func, 5538 __u16 cmd_code, long data) 5539 { 5540 int rc; 5541 int length = 0; 5542 struct qeth_cmd_buffer *iob; 5543 5544 QETH_CARD_TEXT(card, 4, "simassp4"); 5545 if (data) 5546 length = sizeof(__u32); 5547 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5548 length, QETH_PROT_IPV4); 5549 if (!iob) 5550 return -ENOMEM; 5551 rc = qeth_send_setassparms(card, iob, length, data, 5552 qeth_setassparms_cb, NULL); 5553 return rc; 5554 } 5555 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5556 5557 static void qeth_unregister_dbf_views(void) 5558 { 5559 int x; 5560 for (x = 0; x < QETH_DBF_INFOS; x++) { 5561 debug_unregister(qeth_dbf[x].id); 5562 qeth_dbf[x].id = NULL; 5563 } 5564 } 5565 5566 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5567 { 5568 char dbf_txt_buf[32]; 5569 va_list args; 5570 5571 if (!debug_level_enabled(id, level)) 5572 return; 5573 va_start(args, fmt); 5574 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5575 va_end(args); 5576 debug_text_event(id, level, dbf_txt_buf); 5577 } 5578 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5579 5580 static int qeth_register_dbf_views(void) 5581 { 5582 int ret; 5583 int x; 5584 5585 for (x = 0; x < QETH_DBF_INFOS; x++) { 5586 /* register the areas */ 5587 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5588 qeth_dbf[x].pages, 5589 qeth_dbf[x].areas, 5590 qeth_dbf[x].len); 5591 if (qeth_dbf[x].id == NULL) { 5592 qeth_unregister_dbf_views(); 5593 return -ENOMEM; 5594 } 5595 5596 /* register a view */ 5597 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5598 if (ret) { 5599 qeth_unregister_dbf_views(); 5600 return ret; 5601 } 5602 5603 /* set a passing level */ 5604 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5605 } 5606 5607 return 0; 5608 } 5609 5610 int qeth_core_load_discipline(struct qeth_card *card, 5611 enum qeth_discipline_id discipline) 5612 { 5613 int rc = 0; 5614 5615 mutex_lock(&qeth_mod_mutex); 5616 switch (discipline) { 5617 case QETH_DISCIPLINE_LAYER3: 5618 card->discipline = try_then_request_module( 5619 symbol_get(qeth_l3_discipline), "qeth_l3"); 5620 break; 5621 case QETH_DISCIPLINE_LAYER2: 5622 card->discipline = try_then_request_module( 5623 symbol_get(qeth_l2_discipline), "qeth_l2"); 5624 break; 5625 default: 5626 break; 5627 } 5628 5629 if (!card->discipline) { 5630 dev_err(&card->gdev->dev, "There is no kernel module to " 5631 "support discipline %d\n", discipline); 5632 rc = -EINVAL; 5633 } 5634 mutex_unlock(&qeth_mod_mutex); 5635 return rc; 5636 } 5637 5638 void qeth_core_free_discipline(struct qeth_card *card) 5639 { 5640 if (card->options.layer2) 5641 symbol_put(qeth_l2_discipline); 5642 else 5643 symbol_put(qeth_l3_discipline); 5644 card->discipline = NULL; 5645 } 5646 5647 const struct device_type qeth_generic_devtype = { 5648 .name = "qeth_generic", 5649 .groups = qeth_generic_attr_groups, 5650 }; 5651 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5652 5653 static const struct device_type qeth_osn_devtype = { 5654 .name = "qeth_osn", 5655 .groups = qeth_osn_attr_groups, 5656 }; 5657 5658 #define DBF_NAME_LEN 20 5659 5660 struct qeth_dbf_entry { 5661 char dbf_name[DBF_NAME_LEN]; 5662 debug_info_t *dbf_info; 5663 struct list_head dbf_list; 5664 }; 5665 5666 static LIST_HEAD(qeth_dbf_list); 5667 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5668 5669 static debug_info_t *qeth_get_dbf_entry(char *name) 5670 { 5671 struct qeth_dbf_entry *entry; 5672 debug_info_t *rc = NULL; 5673 5674 mutex_lock(&qeth_dbf_list_mutex); 5675 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5676 if (strcmp(entry->dbf_name, name) == 0) { 5677 rc = entry->dbf_info; 5678 break; 5679 } 5680 } 5681 mutex_unlock(&qeth_dbf_list_mutex); 5682 return rc; 5683 } 5684 5685 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5686 { 5687 struct qeth_dbf_entry *new_entry; 5688 5689 card->debug = debug_register(name, 2, 1, 8); 5690 if (!card->debug) { 5691 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5692 goto err; 5693 } 5694 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5695 goto err_dbg; 5696 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5697 if (!new_entry) 5698 goto err_dbg; 5699 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5700 new_entry->dbf_info = card->debug; 5701 mutex_lock(&qeth_dbf_list_mutex); 5702 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5703 mutex_unlock(&qeth_dbf_list_mutex); 5704 5705 return 0; 5706 5707 err_dbg: 5708 debug_unregister(card->debug); 5709 err: 5710 return -ENOMEM; 5711 } 5712 5713 static void qeth_clear_dbf_list(void) 5714 { 5715 struct qeth_dbf_entry *entry, *tmp; 5716 5717 mutex_lock(&qeth_dbf_list_mutex); 5718 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5719 list_del(&entry->dbf_list); 5720 debug_unregister(entry->dbf_info); 5721 kfree(entry); 5722 } 5723 mutex_unlock(&qeth_dbf_list_mutex); 5724 } 5725 5726 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5727 { 5728 struct qeth_card *card; 5729 struct device *dev; 5730 int rc; 5731 enum qeth_discipline_id enforced_disc; 5732 unsigned long flags; 5733 char dbf_name[DBF_NAME_LEN]; 5734 5735 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5736 5737 dev = &gdev->dev; 5738 if (!get_device(dev)) 5739 return -ENODEV; 5740 5741 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5742 5743 card = qeth_alloc_card(); 5744 if (!card) { 5745 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5746 rc = -ENOMEM; 5747 goto err_dev; 5748 } 5749 5750 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5751 dev_name(&gdev->dev)); 5752 card->debug = qeth_get_dbf_entry(dbf_name); 5753 if (!card->debug) { 5754 rc = qeth_add_dbf_entry(card, dbf_name); 5755 if (rc) 5756 goto err_card; 5757 } 5758 5759 card->read.ccwdev = gdev->cdev[0]; 5760 card->write.ccwdev = gdev->cdev[1]; 5761 card->data.ccwdev = gdev->cdev[2]; 5762 dev_set_drvdata(&gdev->dev, card); 5763 card->gdev = gdev; 5764 gdev->cdev[0]->handler = qeth_irq; 5765 gdev->cdev[1]->handler = qeth_irq; 5766 gdev->cdev[2]->handler = qeth_irq; 5767 5768 qeth_determine_card_type(card); 5769 rc = qeth_setup_card(card); 5770 if (rc) { 5771 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5772 goto err_card; 5773 } 5774 5775 qeth_determine_capabilities(card); 5776 enforced_disc = qeth_enforce_discipline(card); 5777 switch (enforced_disc) { 5778 case QETH_DISCIPLINE_UNDETERMINED: 5779 gdev->dev.type = &qeth_generic_devtype; 5780 break; 5781 default: 5782 card->info.layer_enforced = true; 5783 rc = qeth_core_load_discipline(card, enforced_disc); 5784 if (rc) 5785 goto err_card; 5786 5787 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5788 ? card->discipline->devtype 5789 : &qeth_osn_devtype; 5790 rc = card->discipline->setup(card->gdev); 5791 if (rc) 5792 goto err_disc; 5793 break; 5794 } 5795 5796 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5797 list_add_tail(&card->list, &qeth_core_card_list.list); 5798 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5799 return 0; 5800 5801 err_disc: 5802 qeth_core_free_discipline(card); 5803 err_card: 5804 qeth_core_free_card(card); 5805 err_dev: 5806 put_device(dev); 5807 return rc; 5808 } 5809 5810 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5811 { 5812 unsigned long flags; 5813 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5814 5815 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5816 5817 if (card->discipline) { 5818 card->discipline->remove(gdev); 5819 qeth_core_free_discipline(card); 5820 } 5821 5822 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5823 list_del(&card->list); 5824 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5825 qeth_core_free_card(card); 5826 dev_set_drvdata(&gdev->dev, NULL); 5827 put_device(&gdev->dev); 5828 return; 5829 } 5830 5831 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5832 { 5833 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5834 int rc = 0; 5835 enum qeth_discipline_id def_discipline; 5836 5837 if (!card->discipline) { 5838 if (card->info.type == QETH_CARD_TYPE_IQD) 5839 def_discipline = QETH_DISCIPLINE_LAYER3; 5840 else 5841 def_discipline = QETH_DISCIPLINE_LAYER2; 5842 rc = qeth_core_load_discipline(card, def_discipline); 5843 if (rc) 5844 goto err; 5845 rc = card->discipline->setup(card->gdev); 5846 if (rc) { 5847 qeth_core_free_discipline(card); 5848 goto err; 5849 } 5850 } 5851 rc = card->discipline->set_online(gdev); 5852 err: 5853 return rc; 5854 } 5855 5856 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5857 { 5858 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5859 return card->discipline->set_offline(gdev); 5860 } 5861 5862 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5863 { 5864 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5865 qeth_set_allowed_threads(card, 0, 1); 5866 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5867 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5868 qeth_qdio_clear_card(card, 0); 5869 qeth_clear_qdio_buffers(card); 5870 qdio_free(CARD_DDEV(card)); 5871 } 5872 5873 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5874 { 5875 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5876 if (card->discipline && card->discipline->freeze) 5877 return card->discipline->freeze(gdev); 5878 return 0; 5879 } 5880 5881 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5882 { 5883 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5884 if (card->discipline && card->discipline->thaw) 5885 return card->discipline->thaw(gdev); 5886 return 0; 5887 } 5888 5889 static int qeth_core_restore(struct ccwgroup_device *gdev) 5890 { 5891 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5892 if (card->discipline && card->discipline->restore) 5893 return card->discipline->restore(gdev); 5894 return 0; 5895 } 5896 5897 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5898 .driver = { 5899 .owner = THIS_MODULE, 5900 .name = "qeth", 5901 }, 5902 .ccw_driver = &qeth_ccw_driver, 5903 .setup = qeth_core_probe_device, 5904 .remove = qeth_core_remove_device, 5905 .set_online = qeth_core_set_online, 5906 .set_offline = qeth_core_set_offline, 5907 .shutdown = qeth_core_shutdown, 5908 .prepare = NULL, 5909 .complete = NULL, 5910 .freeze = qeth_core_freeze, 5911 .thaw = qeth_core_thaw, 5912 .restore = qeth_core_restore, 5913 }; 5914 5915 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5916 size_t count) 5917 { 5918 int err; 5919 5920 err = ccwgroup_create_dev(qeth_core_root_dev, 5921 &qeth_core_ccwgroup_driver, 3, buf); 5922 5923 return err ? err : count; 5924 } 5925 static DRIVER_ATTR_WO(group); 5926 5927 static struct attribute *qeth_drv_attrs[] = { 5928 &driver_attr_group.attr, 5929 NULL, 5930 }; 5931 static struct attribute_group qeth_drv_attr_group = { 5932 .attrs = qeth_drv_attrs, 5933 }; 5934 static const struct attribute_group *qeth_drv_attr_groups[] = { 5935 &qeth_drv_attr_group, 5936 NULL, 5937 }; 5938 5939 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5940 { 5941 struct qeth_card *card = dev->ml_priv; 5942 struct mii_ioctl_data *mii_data; 5943 int rc = 0; 5944 5945 if (!card) 5946 return -ENODEV; 5947 5948 if (!qeth_card_hw_is_reachable(card)) 5949 return -ENODEV; 5950 5951 if (card->info.type == QETH_CARD_TYPE_OSN) 5952 return -EPERM; 5953 5954 switch (cmd) { 5955 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5956 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5957 break; 5958 case SIOC_QETH_GET_CARD_TYPE: 5959 if ((card->info.type == QETH_CARD_TYPE_OSD || 5960 card->info.type == QETH_CARD_TYPE_OSM || 5961 card->info.type == QETH_CARD_TYPE_OSX) && 5962 !card->info.guestlan) 5963 return 1; 5964 else 5965 return 0; 5966 case SIOCGMIIPHY: 5967 mii_data = if_mii(rq); 5968 mii_data->phy_id = 0; 5969 break; 5970 case SIOCGMIIREG: 5971 mii_data = if_mii(rq); 5972 if (mii_data->phy_id != 0) 5973 rc = -EINVAL; 5974 else 5975 mii_data->val_out = qeth_mdio_read(dev, 5976 mii_data->phy_id, mii_data->reg_num); 5977 break; 5978 case SIOC_QETH_QUERY_OAT: 5979 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5980 break; 5981 default: 5982 if (card->discipline->do_ioctl) 5983 rc = card->discipline->do_ioctl(dev, rq, cmd); 5984 else 5985 rc = -EOPNOTSUPP; 5986 } 5987 if (rc) 5988 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5989 return rc; 5990 } 5991 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5992 5993 static struct { 5994 const char str[ETH_GSTRING_LEN]; 5995 } qeth_ethtool_stats_keys[] = { 5996 /* 0 */{"rx skbs"}, 5997 {"rx buffers"}, 5998 {"tx skbs"}, 5999 {"tx buffers"}, 6000 {"tx skbs no packing"}, 6001 {"tx buffers no packing"}, 6002 {"tx skbs packing"}, 6003 {"tx buffers packing"}, 6004 {"tx sg skbs"}, 6005 {"tx sg frags"}, 6006 /* 10 */{"rx sg skbs"}, 6007 {"rx sg frags"}, 6008 {"rx sg page allocs"}, 6009 {"tx large kbytes"}, 6010 {"tx large count"}, 6011 {"tx pk state ch n->p"}, 6012 {"tx pk state ch p->n"}, 6013 {"tx pk watermark low"}, 6014 {"tx pk watermark high"}, 6015 {"queue 0 buffer usage"}, 6016 /* 20 */{"queue 1 buffer usage"}, 6017 {"queue 2 buffer usage"}, 6018 {"queue 3 buffer usage"}, 6019 {"rx poll time"}, 6020 {"rx poll count"}, 6021 {"rx do_QDIO time"}, 6022 {"rx do_QDIO count"}, 6023 {"tx handler time"}, 6024 {"tx handler count"}, 6025 {"tx time"}, 6026 /* 30 */{"tx count"}, 6027 {"tx do_QDIO time"}, 6028 {"tx do_QDIO count"}, 6029 {"tx csum"}, 6030 {"tx lin"}, 6031 {"tx linfail"}, 6032 {"cq handler count"}, 6033 {"cq handler time"} 6034 }; 6035 6036 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 6037 { 6038 switch (stringset) { 6039 case ETH_SS_STATS: 6040 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 6041 default: 6042 return -EINVAL; 6043 } 6044 } 6045 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 6046 6047 void qeth_core_get_ethtool_stats(struct net_device *dev, 6048 struct ethtool_stats *stats, u64 *data) 6049 { 6050 struct qeth_card *card = dev->ml_priv; 6051 data[0] = card->stats.rx_packets - 6052 card->perf_stats.initial_rx_packets; 6053 data[1] = card->perf_stats.bufs_rec; 6054 data[2] = card->stats.tx_packets - 6055 card->perf_stats.initial_tx_packets; 6056 data[3] = card->perf_stats.bufs_sent; 6057 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 6058 - card->perf_stats.skbs_sent_pack; 6059 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 6060 data[6] = card->perf_stats.skbs_sent_pack; 6061 data[7] = card->perf_stats.bufs_sent_pack; 6062 data[8] = card->perf_stats.sg_skbs_sent; 6063 data[9] = card->perf_stats.sg_frags_sent; 6064 data[10] = card->perf_stats.sg_skbs_rx; 6065 data[11] = card->perf_stats.sg_frags_rx; 6066 data[12] = card->perf_stats.sg_alloc_page_rx; 6067 data[13] = (card->perf_stats.large_send_bytes >> 10); 6068 data[14] = card->perf_stats.large_send_cnt; 6069 data[15] = card->perf_stats.sc_dp_p; 6070 data[16] = card->perf_stats.sc_p_dp; 6071 data[17] = QETH_LOW_WATERMARK_PACK; 6072 data[18] = QETH_HIGH_WATERMARK_PACK; 6073 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 6074 data[20] = (card->qdio.no_out_queues > 1) ? 6075 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 6076 data[21] = (card->qdio.no_out_queues > 2) ? 6077 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6078 data[22] = (card->qdio.no_out_queues > 3) ? 6079 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6080 data[23] = card->perf_stats.inbound_time; 6081 data[24] = card->perf_stats.inbound_cnt; 6082 data[25] = card->perf_stats.inbound_do_qdio_time; 6083 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6084 data[27] = card->perf_stats.outbound_handler_time; 6085 data[28] = card->perf_stats.outbound_handler_cnt; 6086 data[29] = card->perf_stats.outbound_time; 6087 data[30] = card->perf_stats.outbound_cnt; 6088 data[31] = card->perf_stats.outbound_do_qdio_time; 6089 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6090 data[33] = card->perf_stats.tx_csum; 6091 data[34] = card->perf_stats.tx_lin; 6092 data[35] = card->perf_stats.tx_linfail; 6093 data[36] = card->perf_stats.cq_cnt; 6094 data[37] = card->perf_stats.cq_time; 6095 } 6096 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6097 6098 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6099 { 6100 switch (stringset) { 6101 case ETH_SS_STATS: 6102 memcpy(data, &qeth_ethtool_stats_keys, 6103 sizeof(qeth_ethtool_stats_keys)); 6104 break; 6105 default: 6106 WARN_ON(1); 6107 break; 6108 } 6109 } 6110 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6111 6112 void qeth_core_get_drvinfo(struct net_device *dev, 6113 struct ethtool_drvinfo *info) 6114 { 6115 struct qeth_card *card = dev->ml_priv; 6116 6117 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6118 sizeof(info->driver)); 6119 strlcpy(info->version, "1.0", sizeof(info->version)); 6120 strlcpy(info->fw_version, card->info.mcl_level, 6121 sizeof(info->fw_version)); 6122 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6123 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6124 } 6125 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6126 6127 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6128 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6129 /* Always advertise and support all speeds up to specified, and only one */ 6130 /* specified port type. */ 6131 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6132 int maxspeed, int porttype) 6133 { 6134 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6135 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6136 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6137 6138 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6139 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6140 6141 switch (porttype) { 6142 case PORT_TP: 6143 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6144 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6145 break; 6146 case PORT_FIBRE: 6147 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6148 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6149 break; 6150 default: 6151 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6152 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6153 WARN_ON_ONCE(1); 6154 } 6155 6156 /* fallthrough from high to low, to select all legal speeds: */ 6157 switch (maxspeed) { 6158 case SPEED_10000: 6159 ethtool_link_ksettings_add_link_mode(cmd, supported, 6160 10000baseT_Full); 6161 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6162 10000baseT_Full); 6163 case SPEED_1000: 6164 ethtool_link_ksettings_add_link_mode(cmd, supported, 6165 1000baseT_Full); 6166 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6167 1000baseT_Full); 6168 ethtool_link_ksettings_add_link_mode(cmd, supported, 6169 1000baseT_Half); 6170 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6171 1000baseT_Half); 6172 case SPEED_100: 6173 ethtool_link_ksettings_add_link_mode(cmd, supported, 6174 100baseT_Full); 6175 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6176 100baseT_Full); 6177 ethtool_link_ksettings_add_link_mode(cmd, supported, 6178 100baseT_Half); 6179 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6180 100baseT_Half); 6181 case SPEED_10: 6182 ethtool_link_ksettings_add_link_mode(cmd, supported, 6183 10baseT_Full); 6184 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6185 10baseT_Full); 6186 ethtool_link_ksettings_add_link_mode(cmd, supported, 6187 10baseT_Half); 6188 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6189 10baseT_Half); 6190 /* end fallthrough */ 6191 break; 6192 default: 6193 ethtool_link_ksettings_add_link_mode(cmd, supported, 6194 10baseT_Full); 6195 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6196 10baseT_Full); 6197 ethtool_link_ksettings_add_link_mode(cmd, supported, 6198 10baseT_Half); 6199 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6200 10baseT_Half); 6201 WARN_ON_ONCE(1); 6202 } 6203 } 6204 6205 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6206 struct ethtool_link_ksettings *cmd) 6207 { 6208 struct qeth_card *card = netdev->ml_priv; 6209 enum qeth_link_types link_type; 6210 struct carrier_info carrier_info; 6211 int rc; 6212 6213 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6214 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6215 else 6216 link_type = card->info.link_type; 6217 6218 cmd->base.duplex = DUPLEX_FULL; 6219 cmd->base.autoneg = AUTONEG_ENABLE; 6220 cmd->base.phy_address = 0; 6221 cmd->base.mdio_support = 0; 6222 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6223 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6224 6225 switch (link_type) { 6226 case QETH_LINK_TYPE_FAST_ETH: 6227 case QETH_LINK_TYPE_LANE_ETH100: 6228 cmd->base.speed = SPEED_100; 6229 cmd->base.port = PORT_TP; 6230 break; 6231 case QETH_LINK_TYPE_GBIT_ETH: 6232 case QETH_LINK_TYPE_LANE_ETH1000: 6233 cmd->base.speed = SPEED_1000; 6234 cmd->base.port = PORT_FIBRE; 6235 break; 6236 case QETH_LINK_TYPE_10GBIT_ETH: 6237 cmd->base.speed = SPEED_10000; 6238 cmd->base.port = PORT_FIBRE; 6239 break; 6240 default: 6241 cmd->base.speed = SPEED_10; 6242 cmd->base.port = PORT_TP; 6243 } 6244 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6245 6246 /* Check if we can obtain more accurate information. */ 6247 /* If QUERY_CARD_INFO command is not supported or fails, */ 6248 /* just return the heuristics that was filled above. */ 6249 if (!qeth_card_hw_is_reachable(card)) 6250 return -ENODEV; 6251 rc = qeth_query_card_info(card, &carrier_info); 6252 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6253 return 0; 6254 if (rc) /* report error from the hardware operation */ 6255 return rc; 6256 /* on success, fill in the information got from the hardware */ 6257 6258 netdev_dbg(netdev, 6259 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6260 carrier_info.card_type, 6261 carrier_info.port_mode, 6262 carrier_info.port_speed); 6263 6264 /* Update attributes for which we've obtained more authoritative */ 6265 /* information, leave the rest the way they where filled above. */ 6266 switch (carrier_info.card_type) { 6267 case CARD_INFO_TYPE_1G_COPPER_A: 6268 case CARD_INFO_TYPE_1G_COPPER_B: 6269 cmd->base.port = PORT_TP; 6270 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6271 break; 6272 case CARD_INFO_TYPE_1G_FIBRE_A: 6273 case CARD_INFO_TYPE_1G_FIBRE_B: 6274 cmd->base.port = PORT_FIBRE; 6275 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6276 break; 6277 case CARD_INFO_TYPE_10G_FIBRE_A: 6278 case CARD_INFO_TYPE_10G_FIBRE_B: 6279 cmd->base.port = PORT_FIBRE; 6280 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6281 break; 6282 } 6283 6284 switch (carrier_info.port_mode) { 6285 case CARD_INFO_PORTM_FULLDUPLEX: 6286 cmd->base.duplex = DUPLEX_FULL; 6287 break; 6288 case CARD_INFO_PORTM_HALFDUPLEX: 6289 cmd->base.duplex = DUPLEX_HALF; 6290 break; 6291 } 6292 6293 switch (carrier_info.port_speed) { 6294 case CARD_INFO_PORTS_10M: 6295 cmd->base.speed = SPEED_10; 6296 break; 6297 case CARD_INFO_PORTS_100M: 6298 cmd->base.speed = SPEED_100; 6299 break; 6300 case CARD_INFO_PORTS_1G: 6301 cmd->base.speed = SPEED_1000; 6302 break; 6303 case CARD_INFO_PORTS_10G: 6304 cmd->base.speed = SPEED_10000; 6305 break; 6306 } 6307 6308 return 0; 6309 } 6310 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6311 6312 /* Callback to handle checksum offload command reply from OSA card. 6313 * Verify that required features have been enabled on the card. 6314 * Return error in hdr->return_code as this value is checked by caller. 6315 * 6316 * Always returns zero to indicate no further messages from the OSA card. 6317 */ 6318 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6319 struct qeth_reply *reply, 6320 unsigned long data) 6321 { 6322 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6323 struct qeth_checksum_cmd *chksum_cb = 6324 (struct qeth_checksum_cmd *)reply->param; 6325 6326 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6327 if (qeth_setassparms_inspect_rc(cmd)) 6328 return 0; 6329 6330 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6331 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6332 chksum_cb->supported = 6333 cmd->data.setassparms.data.chksum.supported; 6334 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6335 } 6336 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6337 chksum_cb->supported = 6338 cmd->data.setassparms.data.chksum.supported; 6339 chksum_cb->enabled = 6340 cmd->data.setassparms.data.chksum.enabled; 6341 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6342 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6343 } 6344 return 0; 6345 } 6346 6347 /* Send command to OSA card and check results. */ 6348 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6349 enum qeth_ipa_funcs ipa_func, 6350 __u16 cmd_code, long data, 6351 struct qeth_checksum_cmd *chksum_cb) 6352 { 6353 struct qeth_cmd_buffer *iob; 6354 int rc = -ENOMEM; 6355 6356 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6357 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6358 sizeof(__u32), QETH_PROT_IPV4); 6359 if (iob) 6360 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6361 qeth_ipa_checksum_run_cmd_cb, 6362 chksum_cb); 6363 return rc; 6364 } 6365 6366 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6367 { 6368 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR | 6369 QETH_IPA_CHECKSUM_UDP | 6370 QETH_IPA_CHECKSUM_TCP; 6371 struct qeth_checksum_cmd chksum_cb; 6372 int rc; 6373 6374 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6375 &chksum_cb); 6376 if (!rc) { 6377 if ((required_features & chksum_cb.supported) != 6378 required_features) 6379 rc = -EIO; 6380 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6381 cstype == IPA_INBOUND_CHECKSUM) 6382 dev_warn(&card->gdev->dev, 6383 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6384 QETH_CARD_IFNAME(card)); 6385 } 6386 if (rc) { 6387 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6388 dev_warn(&card->gdev->dev, 6389 "Starting HW checksumming for %s failed, using SW checksumming\n", 6390 QETH_CARD_IFNAME(card)); 6391 return rc; 6392 } 6393 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6394 chksum_cb.supported, &chksum_cb); 6395 if (!rc) { 6396 if ((required_features & chksum_cb.enabled) != 6397 required_features) 6398 rc = -EIO; 6399 } 6400 if (rc) { 6401 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6402 dev_warn(&card->gdev->dev, 6403 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6404 QETH_CARD_IFNAME(card)); 6405 return rc; 6406 } 6407 6408 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6409 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6410 return 0; 6411 } 6412 6413 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6414 { 6415 int rc = (on) ? qeth_send_checksum_on(card, cstype) 6416 : qeth_send_simple_setassparms(card, cstype, 6417 IPA_CMD_ASS_STOP, 0); 6418 return rc ? -EIO : 0; 6419 } 6420 6421 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6422 { 6423 int rc; 6424 6425 QETH_CARD_TEXT(card, 3, "sttso"); 6426 6427 if (on) { 6428 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6429 IPA_CMD_ASS_START, 0); 6430 if (rc) { 6431 dev_warn(&card->gdev->dev, 6432 "Starting outbound TCP segmentation offload for %s failed\n", 6433 QETH_CARD_IFNAME(card)); 6434 return -EIO; 6435 } 6436 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6437 } else { 6438 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6439 IPA_CMD_ASS_STOP, 0); 6440 } 6441 return rc; 6442 } 6443 6444 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO) 6445 6446 /** 6447 * qeth_recover_features() - Restore device features after recovery 6448 * @dev: the recovering net_device 6449 * 6450 * Caller must hold rtnl lock. 6451 */ 6452 void qeth_recover_features(struct net_device *dev) 6453 { 6454 netdev_features_t features = dev->features; 6455 struct qeth_card *card = dev->ml_priv; 6456 6457 /* force-off any feature that needs an IPA sequence. 6458 * netdev_update_features() will restart them. 6459 */ 6460 dev->features &= ~QETH_HW_FEATURES; 6461 netdev_update_features(dev); 6462 6463 if (features == dev->features) 6464 return; 6465 dev_warn(&card->gdev->dev, 6466 "Device recovery failed to restore all offload features\n"); 6467 } 6468 EXPORT_SYMBOL_GPL(qeth_recover_features); 6469 6470 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6471 { 6472 struct qeth_card *card = dev->ml_priv; 6473 netdev_features_t changed = dev->features ^ features; 6474 int rc = 0; 6475 6476 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6477 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6478 6479 if ((changed & NETIF_F_IP_CSUM)) { 6480 rc = qeth_set_ipa_csum(card, 6481 features & NETIF_F_IP_CSUM ? 1 : 0, 6482 IPA_OUTBOUND_CHECKSUM); 6483 if (rc) 6484 changed ^= NETIF_F_IP_CSUM; 6485 } 6486 if ((changed & NETIF_F_RXCSUM)) { 6487 rc = qeth_set_ipa_csum(card, 6488 features & NETIF_F_RXCSUM ? 1 : 0, 6489 IPA_INBOUND_CHECKSUM); 6490 if (rc) 6491 changed ^= NETIF_F_RXCSUM; 6492 } 6493 if ((changed & NETIF_F_TSO)) { 6494 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6495 if (rc) 6496 changed ^= NETIF_F_TSO; 6497 } 6498 6499 /* everything changed successfully? */ 6500 if ((dev->features ^ features) == changed) 6501 return 0; 6502 /* something went wrong. save changed features and return error */ 6503 dev->features ^= changed; 6504 return -EIO; 6505 } 6506 EXPORT_SYMBOL_GPL(qeth_set_features); 6507 6508 netdev_features_t qeth_fix_features(struct net_device *dev, 6509 netdev_features_t features) 6510 { 6511 struct qeth_card *card = dev->ml_priv; 6512 6513 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6514 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6515 features &= ~NETIF_F_IP_CSUM; 6516 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6517 features &= ~NETIF_F_RXCSUM; 6518 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6519 features &= ~NETIF_F_TSO; 6520 /* if the card isn't up, remove features that require hw changes */ 6521 if (card->state == CARD_STATE_DOWN || 6522 card->state == CARD_STATE_RECOVER) 6523 features &= ~QETH_HW_FEATURES; 6524 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6525 return features; 6526 } 6527 EXPORT_SYMBOL_GPL(qeth_fix_features); 6528 6529 netdev_features_t qeth_features_check(struct sk_buff *skb, 6530 struct net_device *dev, 6531 netdev_features_t features) 6532 { 6533 /* GSO segmentation builds skbs with 6534 * a (small) linear part for the headers, and 6535 * page frags for the data. 6536 * Compared to a linear skb, the header-only part consumes an 6537 * additional buffer element. This reduces buffer utilization, and 6538 * hurts throughput. So compress small segments into one element. 6539 */ 6540 if (netif_needs_gso(skb, features)) { 6541 /* match skb_segment(): */ 6542 unsigned int doffset = skb->data - skb_mac_header(skb); 6543 unsigned int hsize = skb_shinfo(skb)->gso_size; 6544 unsigned int hroom = skb_headroom(skb); 6545 6546 /* linearize only if resulting skb allocations are order-0: */ 6547 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6548 features &= ~NETIF_F_SG; 6549 } 6550 6551 return vlan_features_check(skb, features); 6552 } 6553 EXPORT_SYMBOL_GPL(qeth_features_check); 6554 6555 static int __init qeth_core_init(void) 6556 { 6557 int rc; 6558 6559 pr_info("loading core functions\n"); 6560 INIT_LIST_HEAD(&qeth_core_card_list.list); 6561 INIT_LIST_HEAD(&qeth_dbf_list); 6562 rwlock_init(&qeth_core_card_list.rwlock); 6563 mutex_init(&qeth_mod_mutex); 6564 6565 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6566 6567 rc = qeth_register_dbf_views(); 6568 if (rc) 6569 goto out_err; 6570 qeth_core_root_dev = root_device_register("qeth"); 6571 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6572 if (rc) 6573 goto register_err; 6574 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6575 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6576 if (!qeth_core_header_cache) { 6577 rc = -ENOMEM; 6578 goto slab_err; 6579 } 6580 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6581 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6582 if (!qeth_qdio_outbuf_cache) { 6583 rc = -ENOMEM; 6584 goto cqslab_err; 6585 } 6586 rc = ccw_driver_register(&qeth_ccw_driver); 6587 if (rc) 6588 goto ccw_err; 6589 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6590 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6591 if (rc) 6592 goto ccwgroup_err; 6593 6594 return 0; 6595 6596 ccwgroup_err: 6597 ccw_driver_unregister(&qeth_ccw_driver); 6598 ccw_err: 6599 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6600 cqslab_err: 6601 kmem_cache_destroy(qeth_core_header_cache); 6602 slab_err: 6603 root_device_unregister(qeth_core_root_dev); 6604 register_err: 6605 qeth_unregister_dbf_views(); 6606 out_err: 6607 pr_err("Initializing the qeth device driver failed\n"); 6608 return rc; 6609 } 6610 6611 static void __exit qeth_core_exit(void) 6612 { 6613 qeth_clear_dbf_list(); 6614 destroy_workqueue(qeth_wq); 6615 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6616 ccw_driver_unregister(&qeth_ccw_driver); 6617 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6618 kmem_cache_destroy(qeth_core_header_cache); 6619 root_device_unregister(qeth_core_root_dev); 6620 qeth_unregister_dbf_views(); 6621 pr_info("core functions removed\n"); 6622 } 6623 6624 module_init(qeth_core_init); 6625 module_exit(qeth_core_exit); 6626 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6627 MODULE_DESCRIPTION("qeth core functions"); 6628 MODULE_LICENSE("GPL"); 6629