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