1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/string.h> 16 #include <linux/errno.h> 17 #include <linux/kernel.h> 18 #include <linux/ip.h> 19 #include <linux/tcp.h> 20 #include <linux/mii.h> 21 #include <linux/kthread.h> 22 #include <linux/slab.h> 23 #include <linux/if_vlan.h> 24 #include <linux/netdevice.h> 25 #include <linux/netdev_features.h> 26 #include <linux/skbuff.h> 27 28 #include <net/iucv/af_iucv.h> 29 #include <net/dsfield.h> 30 31 #include <asm/ebcdic.h> 32 #include <asm/chpid.h> 33 #include <asm/io.h> 34 #include <asm/sysinfo.h> 35 #include <asm/compat.h> 36 #include <asm/diag.h> 37 #include <asm/cio.h> 38 #include <asm/ccwdev.h> 39 40 #include "qeth_core.h" 41 42 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 43 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 44 /* N P A M L V H */ 45 [QETH_DBF_SETUP] = {"qeth_setup", 46 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 47 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 48 &debug_sprintf_view, NULL}, 49 [QETH_DBF_CTRL] = {"qeth_control", 50 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 51 }; 52 EXPORT_SYMBOL_GPL(qeth_dbf); 53 54 struct qeth_card_list_struct qeth_core_card_list; 55 EXPORT_SYMBOL_GPL(qeth_core_card_list); 56 struct kmem_cache *qeth_core_header_cache; 57 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 58 static struct kmem_cache *qeth_qdio_outbuf_cache; 59 60 static struct device *qeth_core_root_dev; 61 static struct lock_class_key qdio_out_skb_queue_key; 62 static struct mutex qeth_mod_mutex; 63 64 static void qeth_send_control_data_cb(struct qeth_channel *, 65 struct qeth_cmd_buffer *); 66 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 67 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 68 static void qeth_free_buffer_pool(struct qeth_card *); 69 static int qeth_qdio_establish(struct qeth_card *); 70 static void qeth_free_qdio_buffers(struct qeth_card *); 71 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 72 struct qeth_qdio_out_buffer *buf, 73 enum iucv_tx_notify notification); 74 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 75 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 76 struct qeth_qdio_out_buffer *buf, 77 enum qeth_qdio_buffer_states newbufstate); 78 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 79 80 struct workqueue_struct *qeth_wq; 81 EXPORT_SYMBOL_GPL(qeth_wq); 82 83 int qeth_card_hw_is_reachable(struct qeth_card *card) 84 { 85 return (card->state == CARD_STATE_SOFTSETUP) || 86 (card->state == CARD_STATE_UP); 87 } 88 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 89 90 static void qeth_close_dev_handler(struct work_struct *work) 91 { 92 struct qeth_card *card; 93 94 card = container_of(work, struct qeth_card, close_dev_work); 95 QETH_CARD_TEXT(card, 2, "cldevhdl"); 96 rtnl_lock(); 97 dev_close(card->dev); 98 rtnl_unlock(); 99 ccwgroup_set_offline(card->gdev); 100 } 101 102 void qeth_close_dev(struct qeth_card *card) 103 { 104 QETH_CARD_TEXT(card, 2, "cldevsubm"); 105 queue_work(qeth_wq, &card->close_dev_work); 106 } 107 EXPORT_SYMBOL_GPL(qeth_close_dev); 108 109 static const char *qeth_get_cardname(struct qeth_card *card) 110 { 111 if (card->info.guestlan) { 112 switch (card->info.type) { 113 case QETH_CARD_TYPE_OSD: 114 return " Virtual NIC QDIO"; 115 case QETH_CARD_TYPE_IQD: 116 return " Virtual NIC Hiper"; 117 case QETH_CARD_TYPE_OSM: 118 return " Virtual NIC QDIO - OSM"; 119 case QETH_CARD_TYPE_OSX: 120 return " Virtual NIC QDIO - OSX"; 121 default: 122 return " unknown"; 123 } 124 } else { 125 switch (card->info.type) { 126 case QETH_CARD_TYPE_OSD: 127 return " OSD Express"; 128 case QETH_CARD_TYPE_IQD: 129 return " HiperSockets"; 130 case QETH_CARD_TYPE_OSN: 131 return " OSN QDIO"; 132 case QETH_CARD_TYPE_OSM: 133 return " OSM QDIO"; 134 case QETH_CARD_TYPE_OSX: 135 return " OSX QDIO"; 136 default: 137 return " unknown"; 138 } 139 } 140 return " n/a"; 141 } 142 143 /* max length to be returned: 14 */ 144 const char *qeth_get_cardname_short(struct qeth_card *card) 145 { 146 if (card->info.guestlan) { 147 switch (card->info.type) { 148 case QETH_CARD_TYPE_OSD: 149 return "Virt.NIC QDIO"; 150 case QETH_CARD_TYPE_IQD: 151 return "Virt.NIC Hiper"; 152 case QETH_CARD_TYPE_OSM: 153 return "Virt.NIC OSM"; 154 case QETH_CARD_TYPE_OSX: 155 return "Virt.NIC OSX"; 156 default: 157 return "unknown"; 158 } 159 } else { 160 switch (card->info.type) { 161 case QETH_CARD_TYPE_OSD: 162 switch (card->info.link_type) { 163 case QETH_LINK_TYPE_FAST_ETH: 164 return "OSD_100"; 165 case QETH_LINK_TYPE_HSTR: 166 return "HSTR"; 167 case QETH_LINK_TYPE_GBIT_ETH: 168 return "OSD_1000"; 169 case QETH_LINK_TYPE_10GBIT_ETH: 170 return "OSD_10GIG"; 171 case QETH_LINK_TYPE_LANE_ETH100: 172 return "OSD_FE_LANE"; 173 case QETH_LINK_TYPE_LANE_TR: 174 return "OSD_TR_LANE"; 175 case QETH_LINK_TYPE_LANE_ETH1000: 176 return "OSD_GbE_LANE"; 177 case QETH_LINK_TYPE_LANE: 178 return "OSD_ATM_LANE"; 179 default: 180 return "OSD_Express"; 181 } 182 case QETH_CARD_TYPE_IQD: 183 return "HiperSockets"; 184 case QETH_CARD_TYPE_OSN: 185 return "OSN"; 186 case QETH_CARD_TYPE_OSM: 187 return "OSM_1000"; 188 case QETH_CARD_TYPE_OSX: 189 return "OSX_10GIG"; 190 default: 191 return "unknown"; 192 } 193 } 194 return "n/a"; 195 } 196 197 void qeth_set_recovery_task(struct qeth_card *card) 198 { 199 card->recovery_task = current; 200 } 201 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 202 203 void qeth_clear_recovery_task(struct qeth_card *card) 204 { 205 card->recovery_task = NULL; 206 } 207 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 208 209 static bool qeth_is_recovery_task(const struct qeth_card *card) 210 { 211 return card->recovery_task == current; 212 } 213 214 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 215 int clear_start_mask) 216 { 217 unsigned long flags; 218 219 spin_lock_irqsave(&card->thread_mask_lock, flags); 220 card->thread_allowed_mask = threads; 221 if (clear_start_mask) 222 card->thread_start_mask &= threads; 223 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 224 wake_up(&card->wait_q); 225 } 226 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 227 228 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 229 { 230 unsigned long flags; 231 int rc = 0; 232 233 spin_lock_irqsave(&card->thread_mask_lock, flags); 234 rc = (card->thread_running_mask & threads); 235 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 236 return rc; 237 } 238 EXPORT_SYMBOL_GPL(qeth_threads_running); 239 240 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 241 { 242 if (qeth_is_recovery_task(card)) 243 return 0; 244 return wait_event_interruptible(card->wait_q, 245 qeth_threads_running(card, threads) == 0); 246 } 247 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 248 249 void qeth_clear_working_pool_list(struct qeth_card *card) 250 { 251 struct qeth_buffer_pool_entry *pool_entry, *tmp; 252 253 QETH_CARD_TEXT(card, 5, "clwrklst"); 254 list_for_each_entry_safe(pool_entry, tmp, 255 &card->qdio.in_buf_pool.entry_list, list){ 256 list_del(&pool_entry->list); 257 } 258 } 259 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 260 261 static int qeth_alloc_buffer_pool(struct qeth_card *card) 262 { 263 struct qeth_buffer_pool_entry *pool_entry; 264 void *ptr; 265 int i, j; 266 267 QETH_CARD_TEXT(card, 5, "alocpool"); 268 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 269 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 270 if (!pool_entry) { 271 qeth_free_buffer_pool(card); 272 return -ENOMEM; 273 } 274 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 275 ptr = (void *) __get_free_page(GFP_KERNEL); 276 if (!ptr) { 277 while (j > 0) 278 free_page((unsigned long) 279 pool_entry->elements[--j]); 280 kfree(pool_entry); 281 qeth_free_buffer_pool(card); 282 return -ENOMEM; 283 } 284 pool_entry->elements[j] = ptr; 285 } 286 list_add(&pool_entry->init_list, 287 &card->qdio.init_pool.entry_list); 288 } 289 return 0; 290 } 291 292 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 293 { 294 QETH_CARD_TEXT(card, 2, "realcbp"); 295 296 if ((card->state != CARD_STATE_DOWN) && 297 (card->state != CARD_STATE_RECOVER)) 298 return -EPERM; 299 300 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 301 qeth_clear_working_pool_list(card); 302 qeth_free_buffer_pool(card); 303 card->qdio.in_buf_pool.buf_count = bufcnt; 304 card->qdio.init_pool.buf_count = bufcnt; 305 return qeth_alloc_buffer_pool(card); 306 } 307 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 308 309 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 310 { 311 if (!q) 312 return; 313 314 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 315 kfree(q); 316 } 317 318 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 319 { 320 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 321 int i; 322 323 if (!q) 324 return NULL; 325 326 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 327 kfree(q); 328 return NULL; 329 } 330 331 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 332 q->bufs[i].buffer = q->qdio_bufs[i]; 333 334 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 335 return q; 336 } 337 338 static int qeth_cq_init(struct qeth_card *card) 339 { 340 int rc; 341 342 if (card->options.cq == QETH_CQ_ENABLED) { 343 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 344 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 345 QDIO_MAX_BUFFERS_PER_Q); 346 card->qdio.c_q->next_buf_to_init = 127; 347 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 348 card->qdio.no_in_queues - 1, 0, 349 127); 350 if (rc) { 351 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 352 goto out; 353 } 354 } 355 rc = 0; 356 out: 357 return rc; 358 } 359 360 static int qeth_alloc_cq(struct qeth_card *card) 361 { 362 int rc; 363 364 if (card->options.cq == QETH_CQ_ENABLED) { 365 int i; 366 struct qdio_outbuf_state *outbuf_states; 367 368 QETH_DBF_TEXT(SETUP, 2, "cqon"); 369 card->qdio.c_q = qeth_alloc_qdio_queue(); 370 if (!card->qdio.c_q) { 371 rc = -1; 372 goto kmsg_out; 373 } 374 card->qdio.no_in_queues = 2; 375 card->qdio.out_bufstates = 376 kzalloc(card->qdio.no_out_queues * 377 QDIO_MAX_BUFFERS_PER_Q * 378 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 379 outbuf_states = card->qdio.out_bufstates; 380 if (outbuf_states == NULL) { 381 rc = -1; 382 goto free_cq_out; 383 } 384 for (i = 0; i < card->qdio.no_out_queues; ++i) { 385 card->qdio.out_qs[i]->bufstates = outbuf_states; 386 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 387 } 388 } else { 389 QETH_DBF_TEXT(SETUP, 2, "nocq"); 390 card->qdio.c_q = NULL; 391 card->qdio.no_in_queues = 1; 392 } 393 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 394 rc = 0; 395 out: 396 return rc; 397 free_cq_out: 398 qeth_free_qdio_queue(card->qdio.c_q); 399 card->qdio.c_q = NULL; 400 kmsg_out: 401 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 402 goto out; 403 } 404 405 static void qeth_free_cq(struct qeth_card *card) 406 { 407 if (card->qdio.c_q) { 408 --card->qdio.no_in_queues; 409 qeth_free_qdio_queue(card->qdio.c_q); 410 card->qdio.c_q = NULL; 411 } 412 kfree(card->qdio.out_bufstates); 413 card->qdio.out_bufstates = NULL; 414 } 415 416 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 417 int delayed) 418 { 419 enum iucv_tx_notify n; 420 421 switch (sbalf15) { 422 case 0: 423 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 424 break; 425 case 4: 426 case 16: 427 case 17: 428 case 18: 429 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 430 TX_NOTIFY_UNREACHABLE; 431 break; 432 default: 433 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 434 TX_NOTIFY_GENERALERROR; 435 break; 436 } 437 438 return n; 439 } 440 441 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 442 int forced_cleanup) 443 { 444 if (q->card->options.cq != QETH_CQ_ENABLED) 445 return; 446 447 if (q->bufs[bidx]->next_pending != NULL) { 448 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 449 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 450 451 while (c) { 452 if (forced_cleanup || 453 atomic_read(&c->state) == 454 QETH_QDIO_BUF_HANDLED_DELAYED) { 455 struct qeth_qdio_out_buffer *f = c; 456 QETH_CARD_TEXT(f->q->card, 5, "fp"); 457 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 458 /* release here to avoid interleaving between 459 outbound tasklet and inbound tasklet 460 regarding notifications and lifecycle */ 461 qeth_release_skbs(c); 462 463 c = f->next_pending; 464 WARN_ON_ONCE(head->next_pending != f); 465 head->next_pending = c; 466 kmem_cache_free(qeth_qdio_outbuf_cache, f); 467 } else { 468 head = c; 469 c = c->next_pending; 470 } 471 472 } 473 } 474 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 475 QETH_QDIO_BUF_HANDLED_DELAYED)) { 476 /* for recovery situations */ 477 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 478 qeth_init_qdio_out_buf(q, bidx); 479 QETH_CARD_TEXT(q->card, 2, "clprecov"); 480 } 481 } 482 483 484 static void qeth_qdio_handle_aob(struct qeth_card *card, 485 unsigned long phys_aob_addr) 486 { 487 struct qaob *aob; 488 struct qeth_qdio_out_buffer *buffer; 489 enum iucv_tx_notify notification; 490 491 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 492 QETH_CARD_TEXT(card, 5, "haob"); 493 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 494 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 495 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 496 497 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 498 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 499 notification = TX_NOTIFY_OK; 500 } else { 501 WARN_ON_ONCE(atomic_read(&buffer->state) != 502 QETH_QDIO_BUF_PENDING); 503 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 504 notification = TX_NOTIFY_DELAYED_OK; 505 } 506 507 if (aob->aorc != 0) { 508 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 509 notification = qeth_compute_cq_notification(aob->aorc, 1); 510 } 511 qeth_notify_skbs(buffer->q, buffer, notification); 512 513 buffer->aob = NULL; 514 qeth_clear_output_buffer(buffer->q, buffer, 515 QETH_QDIO_BUF_HANDLED_DELAYED); 516 517 /* from here on: do not touch buffer anymore */ 518 qdio_release_aob(aob); 519 } 520 521 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 522 { 523 return card->options.cq == QETH_CQ_ENABLED && 524 card->qdio.c_q != NULL && 525 queue != 0 && 526 queue == card->qdio.no_in_queues - 1; 527 } 528 529 530 static int qeth_issue_next_read(struct qeth_card *card) 531 { 532 int rc; 533 struct qeth_cmd_buffer *iob; 534 535 QETH_CARD_TEXT(card, 5, "issnxrd"); 536 if (card->read.state != CH_STATE_UP) 537 return -EIO; 538 iob = qeth_get_buffer(&card->read); 539 if (!iob) { 540 dev_warn(&card->gdev->dev, "The qeth device driver " 541 "failed to recover an error on the device\n"); 542 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 543 "available\n", dev_name(&card->gdev->dev)); 544 return -ENOMEM; 545 } 546 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 547 QETH_CARD_TEXT(card, 6, "noirqpnd"); 548 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 549 (addr_t) iob, 0, 0); 550 if (rc) { 551 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 552 "rc=%i\n", dev_name(&card->gdev->dev), rc); 553 atomic_set(&card->read.irq_pending, 0); 554 card->read_or_write_problem = 1; 555 qeth_schedule_recovery(card); 556 wake_up(&card->wait_q); 557 } 558 return rc; 559 } 560 561 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 562 { 563 struct qeth_reply *reply; 564 565 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 566 if (reply) { 567 atomic_set(&reply->refcnt, 1); 568 atomic_set(&reply->received, 0); 569 reply->card = card; 570 } 571 return reply; 572 } 573 574 static void qeth_get_reply(struct qeth_reply *reply) 575 { 576 WARN_ON(atomic_read(&reply->refcnt) <= 0); 577 atomic_inc(&reply->refcnt); 578 } 579 580 static void qeth_put_reply(struct qeth_reply *reply) 581 { 582 WARN_ON(atomic_read(&reply->refcnt) <= 0); 583 if (atomic_dec_and_test(&reply->refcnt)) 584 kfree(reply); 585 } 586 587 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 588 struct qeth_card *card) 589 { 590 char *ipa_name; 591 int com = cmd->hdr.command; 592 ipa_name = qeth_get_ipa_cmd_name(com); 593 if (rc) 594 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 595 "x%X \"%s\"\n", 596 ipa_name, com, dev_name(&card->gdev->dev), 597 QETH_CARD_IFNAME(card), rc, 598 qeth_get_ipa_msg(rc)); 599 else 600 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 601 ipa_name, com, dev_name(&card->gdev->dev), 602 QETH_CARD_IFNAME(card)); 603 } 604 605 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 606 struct qeth_cmd_buffer *iob) 607 { 608 struct qeth_ipa_cmd *cmd = NULL; 609 610 QETH_CARD_TEXT(card, 5, "chkipad"); 611 if (IS_IPA(iob->data)) { 612 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 613 if (IS_IPA_REPLY(cmd)) { 614 if (cmd->hdr.command != IPA_CMD_SETCCID && 615 cmd->hdr.command != IPA_CMD_DELCCID && 616 cmd->hdr.command != IPA_CMD_MODCCID && 617 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 618 qeth_issue_ipa_msg(cmd, 619 cmd->hdr.return_code, card); 620 return cmd; 621 } else { 622 switch (cmd->hdr.command) { 623 case IPA_CMD_STOPLAN: 624 if (cmd->hdr.return_code == 625 IPA_RC_VEPA_TO_VEB_TRANSITION) { 626 dev_err(&card->gdev->dev, 627 "Interface %s is down because the " 628 "adjacent port is no longer in " 629 "reflective relay mode\n", 630 QETH_CARD_IFNAME(card)); 631 qeth_close_dev(card); 632 } else { 633 dev_warn(&card->gdev->dev, 634 "The link for interface %s on CHPID" 635 " 0x%X failed\n", 636 QETH_CARD_IFNAME(card), 637 card->info.chpid); 638 qeth_issue_ipa_msg(cmd, 639 cmd->hdr.return_code, card); 640 } 641 card->lan_online = 0; 642 if (card->dev && netif_carrier_ok(card->dev)) 643 netif_carrier_off(card->dev); 644 return NULL; 645 case IPA_CMD_STARTLAN: 646 dev_info(&card->gdev->dev, 647 "The link for %s on CHPID 0x%X has" 648 " been restored\n", 649 QETH_CARD_IFNAME(card), 650 card->info.chpid); 651 netif_carrier_on(card->dev); 652 card->lan_online = 1; 653 if (card->info.hwtrap) 654 card->info.hwtrap = 2; 655 qeth_schedule_recovery(card); 656 return NULL; 657 case IPA_CMD_SETBRIDGEPORT_IQD: 658 case IPA_CMD_SETBRIDGEPORT_OSA: 659 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 660 if (card->discipline->control_event_handler 661 (card, cmd)) 662 return cmd; 663 else 664 return NULL; 665 case IPA_CMD_MODCCID: 666 return cmd; 667 case IPA_CMD_REGISTER_LOCAL_ADDR: 668 QETH_CARD_TEXT(card, 3, "irla"); 669 break; 670 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 671 QETH_CARD_TEXT(card, 3, "urla"); 672 break; 673 default: 674 QETH_DBF_MESSAGE(2, "Received data is IPA " 675 "but not a reply!\n"); 676 break; 677 } 678 } 679 } 680 return cmd; 681 } 682 683 void qeth_clear_ipacmd_list(struct qeth_card *card) 684 { 685 struct qeth_reply *reply, *r; 686 unsigned long flags; 687 688 QETH_CARD_TEXT(card, 4, "clipalst"); 689 690 spin_lock_irqsave(&card->lock, flags); 691 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 692 qeth_get_reply(reply); 693 reply->rc = -EIO; 694 atomic_inc(&reply->received); 695 list_del_init(&reply->list); 696 wake_up(&reply->wait_q); 697 qeth_put_reply(reply); 698 } 699 spin_unlock_irqrestore(&card->lock, flags); 700 atomic_set(&card->write.irq_pending, 0); 701 } 702 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 703 704 static int qeth_check_idx_response(struct qeth_card *card, 705 unsigned char *buffer) 706 { 707 if (!buffer) 708 return 0; 709 710 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 711 if ((buffer[2] & 0xc0) == 0xc0) { 712 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 713 "with cause code 0x%02x%s\n", 714 buffer[4], 715 ((buffer[4] == 0x22) ? 716 " -- try another portname" : "")); 717 QETH_CARD_TEXT(card, 2, "ckidxres"); 718 QETH_CARD_TEXT(card, 2, " idxterm"); 719 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 720 if (buffer[4] == 0xf6) { 721 dev_err(&card->gdev->dev, 722 "The qeth device is not configured " 723 "for the OSI layer required by z/VM\n"); 724 return -EPERM; 725 } 726 return -EIO; 727 } 728 return 0; 729 } 730 731 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 732 { 733 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 734 dev_get_drvdata(&cdev->dev))->dev); 735 return card; 736 } 737 738 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 739 __u32 len) 740 { 741 struct qeth_card *card; 742 743 card = CARD_FROM_CDEV(channel->ccwdev); 744 QETH_CARD_TEXT(card, 4, "setupccw"); 745 if (channel == &card->read) 746 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 747 else 748 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 749 channel->ccw.count = len; 750 channel->ccw.cda = (__u32) __pa(iob); 751 } 752 753 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 754 { 755 __u8 index; 756 757 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 758 index = channel->io_buf_no; 759 do { 760 if (channel->iob[index].state == BUF_STATE_FREE) { 761 channel->iob[index].state = BUF_STATE_LOCKED; 762 channel->io_buf_no = (channel->io_buf_no + 1) % 763 QETH_CMD_BUFFER_NO; 764 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 765 return channel->iob + index; 766 } 767 index = (index + 1) % QETH_CMD_BUFFER_NO; 768 } while (index != channel->io_buf_no); 769 770 return NULL; 771 } 772 773 void qeth_release_buffer(struct qeth_channel *channel, 774 struct qeth_cmd_buffer *iob) 775 { 776 unsigned long flags; 777 778 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 779 spin_lock_irqsave(&channel->iob_lock, flags); 780 memset(iob->data, 0, QETH_BUFSIZE); 781 iob->state = BUF_STATE_FREE; 782 iob->callback = qeth_send_control_data_cb; 783 iob->rc = 0; 784 spin_unlock_irqrestore(&channel->iob_lock, flags); 785 wake_up(&channel->wait_q); 786 } 787 EXPORT_SYMBOL_GPL(qeth_release_buffer); 788 789 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 790 { 791 struct qeth_cmd_buffer *buffer = NULL; 792 unsigned long flags; 793 794 spin_lock_irqsave(&channel->iob_lock, flags); 795 buffer = __qeth_get_buffer(channel); 796 spin_unlock_irqrestore(&channel->iob_lock, flags); 797 return buffer; 798 } 799 800 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 801 { 802 struct qeth_cmd_buffer *buffer; 803 wait_event(channel->wait_q, 804 ((buffer = qeth_get_buffer(channel)) != NULL)); 805 return buffer; 806 } 807 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 808 809 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 810 { 811 int cnt; 812 813 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 814 qeth_release_buffer(channel, &channel->iob[cnt]); 815 channel->buf_no = 0; 816 channel->io_buf_no = 0; 817 } 818 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 819 820 static void qeth_send_control_data_cb(struct qeth_channel *channel, 821 struct qeth_cmd_buffer *iob) 822 { 823 struct qeth_card *card; 824 struct qeth_reply *reply, *r; 825 struct qeth_ipa_cmd *cmd; 826 unsigned long flags; 827 int keep_reply; 828 int rc = 0; 829 830 card = CARD_FROM_CDEV(channel->ccwdev); 831 QETH_CARD_TEXT(card, 4, "sndctlcb"); 832 rc = qeth_check_idx_response(card, iob->data); 833 switch (rc) { 834 case 0: 835 break; 836 case -EIO: 837 qeth_clear_ipacmd_list(card); 838 qeth_schedule_recovery(card); 839 /* fall through */ 840 default: 841 goto out; 842 } 843 844 cmd = qeth_check_ipa_data(card, iob); 845 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 846 goto out; 847 /*in case of OSN : check if cmd is set */ 848 if (card->info.type == QETH_CARD_TYPE_OSN && 849 cmd && 850 cmd->hdr.command != IPA_CMD_STARTLAN && 851 card->osn_info.assist_cb != NULL) { 852 card->osn_info.assist_cb(card->dev, cmd); 853 goto out; 854 } 855 856 spin_lock_irqsave(&card->lock, flags); 857 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 858 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 859 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 860 qeth_get_reply(reply); 861 list_del_init(&reply->list); 862 spin_unlock_irqrestore(&card->lock, flags); 863 keep_reply = 0; 864 if (reply->callback != NULL) { 865 if (cmd) { 866 reply->offset = (__u16)((char *)cmd - 867 (char *)iob->data); 868 keep_reply = reply->callback(card, 869 reply, 870 (unsigned long)cmd); 871 } else 872 keep_reply = reply->callback(card, 873 reply, 874 (unsigned long)iob); 875 } 876 if (cmd) 877 reply->rc = (u16) cmd->hdr.return_code; 878 else if (iob->rc) 879 reply->rc = iob->rc; 880 if (keep_reply) { 881 spin_lock_irqsave(&card->lock, flags); 882 list_add_tail(&reply->list, 883 &card->cmd_waiter_list); 884 spin_unlock_irqrestore(&card->lock, flags); 885 } else { 886 atomic_inc(&reply->received); 887 wake_up(&reply->wait_q); 888 } 889 qeth_put_reply(reply); 890 goto out; 891 } 892 } 893 spin_unlock_irqrestore(&card->lock, flags); 894 out: 895 memcpy(&card->seqno.pdu_hdr_ack, 896 QETH_PDU_HEADER_SEQ_NO(iob->data), 897 QETH_SEQ_NO_LENGTH); 898 qeth_release_buffer(channel, iob); 899 } 900 901 static int qeth_setup_channel(struct qeth_channel *channel) 902 { 903 int cnt; 904 905 QETH_DBF_TEXT(SETUP, 2, "setupch"); 906 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 907 channel->iob[cnt].data = 908 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 909 if (channel->iob[cnt].data == NULL) 910 break; 911 channel->iob[cnt].state = BUF_STATE_FREE; 912 channel->iob[cnt].channel = channel; 913 channel->iob[cnt].callback = qeth_send_control_data_cb; 914 channel->iob[cnt].rc = 0; 915 } 916 if (cnt < QETH_CMD_BUFFER_NO) { 917 while (cnt-- > 0) 918 kfree(channel->iob[cnt].data); 919 return -ENOMEM; 920 } 921 channel->buf_no = 0; 922 channel->io_buf_no = 0; 923 atomic_set(&channel->irq_pending, 0); 924 spin_lock_init(&channel->iob_lock); 925 926 init_waitqueue_head(&channel->wait_q); 927 return 0; 928 } 929 930 static int qeth_set_thread_start_bit(struct qeth_card *card, 931 unsigned long thread) 932 { 933 unsigned long flags; 934 935 spin_lock_irqsave(&card->thread_mask_lock, flags); 936 if (!(card->thread_allowed_mask & thread) || 937 (card->thread_start_mask & thread)) { 938 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 939 return -EPERM; 940 } 941 card->thread_start_mask |= thread; 942 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 943 return 0; 944 } 945 946 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 947 { 948 unsigned long flags; 949 950 spin_lock_irqsave(&card->thread_mask_lock, flags); 951 card->thread_start_mask &= ~thread; 952 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 953 wake_up(&card->wait_q); 954 } 955 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 956 957 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 958 { 959 unsigned long flags; 960 961 spin_lock_irqsave(&card->thread_mask_lock, flags); 962 card->thread_running_mask &= ~thread; 963 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 964 wake_up(&card->wait_q); 965 } 966 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 967 968 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 969 { 970 unsigned long flags; 971 int rc = 0; 972 973 spin_lock_irqsave(&card->thread_mask_lock, flags); 974 if (card->thread_start_mask & thread) { 975 if ((card->thread_allowed_mask & thread) && 976 !(card->thread_running_mask & thread)) { 977 rc = 1; 978 card->thread_start_mask &= ~thread; 979 card->thread_running_mask |= thread; 980 } else 981 rc = -EPERM; 982 } 983 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 984 return rc; 985 } 986 987 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 988 { 989 int rc = 0; 990 991 wait_event(card->wait_q, 992 (rc = __qeth_do_run_thread(card, thread)) >= 0); 993 return rc; 994 } 995 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 996 997 void qeth_schedule_recovery(struct qeth_card *card) 998 { 999 QETH_CARD_TEXT(card, 2, "startrec"); 1000 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 1001 schedule_work(&card->kernel_thread_starter); 1002 } 1003 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 1004 1005 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 1006 { 1007 int dstat, cstat; 1008 char *sense; 1009 struct qeth_card *card; 1010 1011 sense = (char *) irb->ecw; 1012 cstat = irb->scsw.cmd.cstat; 1013 dstat = irb->scsw.cmd.dstat; 1014 card = CARD_FROM_CDEV(cdev); 1015 1016 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1017 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1018 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1019 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1020 dev_warn(&cdev->dev, "The qeth device driver " 1021 "failed to recover an error on the device\n"); 1022 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1023 dev_name(&cdev->dev), dstat, cstat); 1024 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1025 16, 1, irb, 64, 1); 1026 return 1; 1027 } 1028 1029 if (dstat & DEV_STAT_UNIT_CHECK) { 1030 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1031 SENSE_RESETTING_EVENT_FLAG) { 1032 QETH_CARD_TEXT(card, 2, "REVIND"); 1033 return 1; 1034 } 1035 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1036 SENSE_COMMAND_REJECT_FLAG) { 1037 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1038 return 1; 1039 } 1040 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1041 QETH_CARD_TEXT(card, 2, "AFFE"); 1042 return 1; 1043 } 1044 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1045 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1046 return 0; 1047 } 1048 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1049 return 1; 1050 } 1051 return 0; 1052 } 1053 1054 static long __qeth_check_irb_error(struct ccw_device *cdev, 1055 unsigned long intparm, struct irb *irb) 1056 { 1057 struct qeth_card *card; 1058 1059 card = CARD_FROM_CDEV(cdev); 1060 1061 if (!card || !IS_ERR(irb)) 1062 return 0; 1063 1064 switch (PTR_ERR(irb)) { 1065 case -EIO: 1066 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1067 dev_name(&cdev->dev)); 1068 QETH_CARD_TEXT(card, 2, "ckirberr"); 1069 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1070 break; 1071 case -ETIMEDOUT: 1072 dev_warn(&cdev->dev, "A hardware operation timed out" 1073 " on the device\n"); 1074 QETH_CARD_TEXT(card, 2, "ckirberr"); 1075 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1076 if (intparm == QETH_RCD_PARM) { 1077 if (card->data.ccwdev == cdev) { 1078 card->data.state = CH_STATE_DOWN; 1079 wake_up(&card->wait_q); 1080 } 1081 } 1082 break; 1083 default: 1084 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1085 dev_name(&cdev->dev), PTR_ERR(irb)); 1086 QETH_CARD_TEXT(card, 2, "ckirberr"); 1087 QETH_CARD_TEXT(card, 2, " rc???"); 1088 } 1089 return PTR_ERR(irb); 1090 } 1091 1092 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1093 struct irb *irb) 1094 { 1095 int rc; 1096 int cstat, dstat; 1097 struct qeth_cmd_buffer *buffer; 1098 struct qeth_channel *channel; 1099 struct qeth_card *card; 1100 struct qeth_cmd_buffer *iob; 1101 __u8 index; 1102 1103 if (__qeth_check_irb_error(cdev, intparm, irb)) 1104 return; 1105 cstat = irb->scsw.cmd.cstat; 1106 dstat = irb->scsw.cmd.dstat; 1107 1108 card = CARD_FROM_CDEV(cdev); 1109 if (!card) 1110 return; 1111 1112 QETH_CARD_TEXT(card, 5, "irq"); 1113 1114 if (card->read.ccwdev == cdev) { 1115 channel = &card->read; 1116 QETH_CARD_TEXT(card, 5, "read"); 1117 } else if (card->write.ccwdev == cdev) { 1118 channel = &card->write; 1119 QETH_CARD_TEXT(card, 5, "write"); 1120 } else { 1121 channel = &card->data; 1122 QETH_CARD_TEXT(card, 5, "data"); 1123 } 1124 atomic_set(&channel->irq_pending, 0); 1125 1126 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1127 channel->state = CH_STATE_STOPPED; 1128 1129 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1130 channel->state = CH_STATE_HALTED; 1131 1132 /*let's wake up immediately on data channel*/ 1133 if ((channel == &card->data) && (intparm != 0) && 1134 (intparm != QETH_RCD_PARM)) 1135 goto out; 1136 1137 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1138 QETH_CARD_TEXT(card, 6, "clrchpar"); 1139 /* we don't have to handle this further */ 1140 intparm = 0; 1141 } 1142 if (intparm == QETH_HALT_CHANNEL_PARM) { 1143 QETH_CARD_TEXT(card, 6, "hltchpar"); 1144 /* we don't have to handle this further */ 1145 intparm = 0; 1146 } 1147 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1148 (dstat & DEV_STAT_UNIT_CHECK) || 1149 (cstat)) { 1150 if (irb->esw.esw0.erw.cons) { 1151 dev_warn(&channel->ccwdev->dev, 1152 "The qeth device driver failed to recover " 1153 "an error on the device\n"); 1154 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1155 "0x%X dstat 0x%X\n", 1156 dev_name(&channel->ccwdev->dev), cstat, dstat); 1157 print_hex_dump(KERN_WARNING, "qeth: irb ", 1158 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1159 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1160 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1161 } 1162 if (intparm == QETH_RCD_PARM) { 1163 channel->state = CH_STATE_DOWN; 1164 goto out; 1165 } 1166 rc = qeth_get_problem(cdev, irb); 1167 if (rc) { 1168 qeth_clear_ipacmd_list(card); 1169 qeth_schedule_recovery(card); 1170 goto out; 1171 } 1172 } 1173 1174 if (intparm == QETH_RCD_PARM) { 1175 channel->state = CH_STATE_RCD_DONE; 1176 goto out; 1177 } 1178 if (intparm) { 1179 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1180 buffer->state = BUF_STATE_PROCESSED; 1181 } 1182 if (channel == &card->data) 1183 return; 1184 if (channel == &card->read && 1185 channel->state == CH_STATE_UP) 1186 qeth_issue_next_read(card); 1187 1188 iob = channel->iob; 1189 index = channel->buf_no; 1190 while (iob[index].state == BUF_STATE_PROCESSED) { 1191 if (iob[index].callback != NULL) 1192 iob[index].callback(channel, iob + index); 1193 1194 index = (index + 1) % QETH_CMD_BUFFER_NO; 1195 } 1196 channel->buf_no = index; 1197 out: 1198 wake_up(&card->wait_q); 1199 return; 1200 } 1201 1202 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1203 struct qeth_qdio_out_buffer *buf, 1204 enum iucv_tx_notify notification) 1205 { 1206 struct sk_buff *skb; 1207 1208 if (skb_queue_empty(&buf->skb_list)) 1209 goto out; 1210 skb = skb_peek(&buf->skb_list); 1211 while (skb) { 1212 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1213 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1214 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1215 if (skb->sk) { 1216 struct iucv_sock *iucv = iucv_sk(skb->sk); 1217 iucv->sk_txnotify(skb, notification); 1218 } 1219 } 1220 if (skb_queue_is_last(&buf->skb_list, skb)) 1221 skb = NULL; 1222 else 1223 skb = skb_queue_next(&buf->skb_list, skb); 1224 } 1225 out: 1226 return; 1227 } 1228 1229 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1230 { 1231 struct sk_buff *skb; 1232 struct iucv_sock *iucv; 1233 int notify_general_error = 0; 1234 1235 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1236 notify_general_error = 1; 1237 1238 /* release may never happen from within CQ tasklet scope */ 1239 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1240 1241 skb = skb_dequeue(&buf->skb_list); 1242 while (skb) { 1243 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1244 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1245 if (notify_general_error && 1246 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1247 if (skb->sk) { 1248 iucv = iucv_sk(skb->sk); 1249 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1250 } 1251 } 1252 refcount_dec(&skb->users); 1253 dev_kfree_skb_any(skb); 1254 skb = skb_dequeue(&buf->skb_list); 1255 } 1256 } 1257 1258 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1259 struct qeth_qdio_out_buffer *buf, 1260 enum qeth_qdio_buffer_states newbufstate) 1261 { 1262 int i; 1263 1264 /* is PCI flag set on buffer? */ 1265 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1266 atomic_dec(&queue->set_pci_flags_count); 1267 1268 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1269 qeth_release_skbs(buf); 1270 } 1271 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1272 if (buf->buffer->element[i].addr && buf->is_header[i]) 1273 kmem_cache_free(qeth_core_header_cache, 1274 buf->buffer->element[i].addr); 1275 buf->is_header[i] = 0; 1276 buf->buffer->element[i].length = 0; 1277 buf->buffer->element[i].addr = NULL; 1278 buf->buffer->element[i].eflags = 0; 1279 buf->buffer->element[i].sflags = 0; 1280 } 1281 buf->buffer->element[15].eflags = 0; 1282 buf->buffer->element[15].sflags = 0; 1283 buf->next_element_to_fill = 0; 1284 atomic_set(&buf->state, newbufstate); 1285 } 1286 1287 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1288 { 1289 int j; 1290 1291 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1292 if (!q->bufs[j]) 1293 continue; 1294 qeth_cleanup_handled_pending(q, j, 1); 1295 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1296 if (free) { 1297 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1298 q->bufs[j] = NULL; 1299 } 1300 } 1301 } 1302 1303 void qeth_clear_qdio_buffers(struct qeth_card *card) 1304 { 1305 int i; 1306 1307 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1308 /* clear outbound buffers to free skbs */ 1309 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1310 if (card->qdio.out_qs[i]) { 1311 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1312 } 1313 } 1314 } 1315 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1316 1317 static void qeth_free_buffer_pool(struct qeth_card *card) 1318 { 1319 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1320 int i = 0; 1321 list_for_each_entry_safe(pool_entry, tmp, 1322 &card->qdio.init_pool.entry_list, init_list){ 1323 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1324 free_page((unsigned long)pool_entry->elements[i]); 1325 list_del(&pool_entry->init_list); 1326 kfree(pool_entry); 1327 } 1328 } 1329 1330 static void qeth_clean_channel(struct qeth_channel *channel) 1331 { 1332 int cnt; 1333 1334 QETH_DBF_TEXT(SETUP, 2, "freech"); 1335 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1336 kfree(channel->iob[cnt].data); 1337 } 1338 1339 static void qeth_set_single_write_queues(struct qeth_card *card) 1340 { 1341 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1342 (card->qdio.no_out_queues == 4)) 1343 qeth_free_qdio_buffers(card); 1344 1345 card->qdio.no_out_queues = 1; 1346 if (card->qdio.default_out_queue != 0) 1347 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1348 1349 card->qdio.default_out_queue = 0; 1350 } 1351 1352 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1353 { 1354 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1355 (card->qdio.no_out_queues == 1)) { 1356 qeth_free_qdio_buffers(card); 1357 card->qdio.default_out_queue = 2; 1358 } 1359 card->qdio.no_out_queues = 4; 1360 } 1361 1362 static void qeth_update_from_chp_desc(struct qeth_card *card) 1363 { 1364 struct ccw_device *ccwdev; 1365 struct channel_path_desc *chp_dsc; 1366 1367 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1368 1369 ccwdev = card->data.ccwdev; 1370 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1371 if (!chp_dsc) 1372 goto out; 1373 1374 card->info.func_level = 0x4100 + chp_dsc->desc; 1375 if (card->info.type == QETH_CARD_TYPE_IQD) 1376 goto out; 1377 1378 /* CHPP field bit 6 == 1 -> single queue */ 1379 if ((chp_dsc->chpp & 0x02) == 0x02) 1380 qeth_set_single_write_queues(card); 1381 else 1382 qeth_set_multiple_write_queues(card); 1383 out: 1384 kfree(chp_dsc); 1385 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1386 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1387 } 1388 1389 static void qeth_init_qdio_info(struct qeth_card *card) 1390 { 1391 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1392 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1393 /* inbound */ 1394 card->qdio.no_in_queues = 1; 1395 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1396 if (card->info.type == QETH_CARD_TYPE_IQD) 1397 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1398 else 1399 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1400 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1401 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1402 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1403 } 1404 1405 static void qeth_set_intial_options(struct qeth_card *card) 1406 { 1407 card->options.route4.type = NO_ROUTER; 1408 card->options.route6.type = NO_ROUTER; 1409 card->options.fake_broadcast = 0; 1410 card->options.performance_stats = 0; 1411 card->options.rx_sg_cb = QETH_RX_SG_CB; 1412 card->options.isolation = ISOLATION_MODE_NONE; 1413 card->options.cq = QETH_CQ_DISABLED; 1414 } 1415 1416 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1417 { 1418 unsigned long flags; 1419 int rc = 0; 1420 1421 spin_lock_irqsave(&card->thread_mask_lock, flags); 1422 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1423 (u8) card->thread_start_mask, 1424 (u8) card->thread_allowed_mask, 1425 (u8) card->thread_running_mask); 1426 rc = (card->thread_start_mask & thread); 1427 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1428 return rc; 1429 } 1430 1431 static void qeth_start_kernel_thread(struct work_struct *work) 1432 { 1433 struct task_struct *ts; 1434 struct qeth_card *card = container_of(work, struct qeth_card, 1435 kernel_thread_starter); 1436 QETH_CARD_TEXT(card , 2, "strthrd"); 1437 1438 if (card->read.state != CH_STATE_UP && 1439 card->write.state != CH_STATE_UP) 1440 return; 1441 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1442 ts = kthread_run(card->discipline->recover, (void *)card, 1443 "qeth_recover"); 1444 if (IS_ERR(ts)) { 1445 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1446 qeth_clear_thread_running_bit(card, 1447 QETH_RECOVER_THREAD); 1448 } 1449 } 1450 } 1451 1452 static void qeth_buffer_reclaim_work(struct work_struct *); 1453 static int qeth_setup_card(struct qeth_card *card) 1454 { 1455 1456 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1457 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1458 1459 card->read.state = CH_STATE_DOWN; 1460 card->write.state = CH_STATE_DOWN; 1461 card->data.state = CH_STATE_DOWN; 1462 card->state = CARD_STATE_DOWN; 1463 card->lan_online = 0; 1464 card->read_or_write_problem = 0; 1465 card->dev = NULL; 1466 spin_lock_init(&card->vlanlock); 1467 spin_lock_init(&card->mclock); 1468 spin_lock_init(&card->lock); 1469 spin_lock_init(&card->ip_lock); 1470 spin_lock_init(&card->thread_mask_lock); 1471 mutex_init(&card->conf_mutex); 1472 mutex_init(&card->discipline_mutex); 1473 card->thread_start_mask = 0; 1474 card->thread_allowed_mask = 0; 1475 card->thread_running_mask = 0; 1476 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1477 INIT_LIST_HEAD(&card->cmd_waiter_list); 1478 init_waitqueue_head(&card->wait_q); 1479 /* initial options */ 1480 qeth_set_intial_options(card); 1481 /* IP address takeover */ 1482 INIT_LIST_HEAD(&card->ipato.entries); 1483 card->ipato.enabled = 0; 1484 card->ipato.invert4 = 0; 1485 card->ipato.invert6 = 0; 1486 /* init QDIO stuff */ 1487 qeth_init_qdio_info(card); 1488 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1489 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1490 return 0; 1491 } 1492 1493 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1494 { 1495 struct qeth_card *card = container_of(slr, struct qeth_card, 1496 qeth_service_level); 1497 if (card->info.mcl_level[0]) 1498 seq_printf(m, "qeth: %s firmware level %s\n", 1499 CARD_BUS_ID(card), card->info.mcl_level); 1500 } 1501 1502 static struct qeth_card *qeth_alloc_card(void) 1503 { 1504 struct qeth_card *card; 1505 1506 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1507 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1508 if (!card) 1509 goto out; 1510 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1511 if (qeth_setup_channel(&card->read)) 1512 goto out_ip; 1513 if (qeth_setup_channel(&card->write)) 1514 goto out_channel; 1515 card->options.layer2 = -1; 1516 card->qeth_service_level.seq_print = qeth_core_sl_print; 1517 register_service_level(&card->qeth_service_level); 1518 return card; 1519 1520 out_channel: 1521 qeth_clean_channel(&card->read); 1522 out_ip: 1523 kfree(card); 1524 out: 1525 return NULL; 1526 } 1527 1528 static void qeth_determine_card_type(struct qeth_card *card) 1529 { 1530 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1531 1532 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1533 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1534 card->info.type = CARD_RDEV(card)->id.driver_info; 1535 card->qdio.no_out_queues = QETH_MAX_QUEUES; 1536 if (card->info.type == QETH_CARD_TYPE_IQD) 1537 card->info.is_multicast_different = 0x0103; 1538 qeth_update_from_chp_desc(card); 1539 } 1540 1541 static int qeth_clear_channel(struct qeth_channel *channel) 1542 { 1543 unsigned long flags; 1544 struct qeth_card *card; 1545 int rc; 1546 1547 card = CARD_FROM_CDEV(channel->ccwdev); 1548 QETH_CARD_TEXT(card, 3, "clearch"); 1549 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1550 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1551 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1552 1553 if (rc) 1554 return rc; 1555 rc = wait_event_interruptible_timeout(card->wait_q, 1556 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1557 if (rc == -ERESTARTSYS) 1558 return rc; 1559 if (channel->state != CH_STATE_STOPPED) 1560 return -ETIME; 1561 channel->state = CH_STATE_DOWN; 1562 return 0; 1563 } 1564 1565 static int qeth_halt_channel(struct qeth_channel *channel) 1566 { 1567 unsigned long flags; 1568 struct qeth_card *card; 1569 int rc; 1570 1571 card = CARD_FROM_CDEV(channel->ccwdev); 1572 QETH_CARD_TEXT(card, 3, "haltch"); 1573 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1574 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1575 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1576 1577 if (rc) 1578 return rc; 1579 rc = wait_event_interruptible_timeout(card->wait_q, 1580 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1581 if (rc == -ERESTARTSYS) 1582 return rc; 1583 if (channel->state != CH_STATE_HALTED) 1584 return -ETIME; 1585 return 0; 1586 } 1587 1588 static int qeth_halt_channels(struct qeth_card *card) 1589 { 1590 int rc1 = 0, rc2 = 0, rc3 = 0; 1591 1592 QETH_CARD_TEXT(card, 3, "haltchs"); 1593 rc1 = qeth_halt_channel(&card->read); 1594 rc2 = qeth_halt_channel(&card->write); 1595 rc3 = qeth_halt_channel(&card->data); 1596 if (rc1) 1597 return rc1; 1598 if (rc2) 1599 return rc2; 1600 return rc3; 1601 } 1602 1603 static int qeth_clear_channels(struct qeth_card *card) 1604 { 1605 int rc1 = 0, rc2 = 0, rc3 = 0; 1606 1607 QETH_CARD_TEXT(card, 3, "clearchs"); 1608 rc1 = qeth_clear_channel(&card->read); 1609 rc2 = qeth_clear_channel(&card->write); 1610 rc3 = qeth_clear_channel(&card->data); 1611 if (rc1) 1612 return rc1; 1613 if (rc2) 1614 return rc2; 1615 return rc3; 1616 } 1617 1618 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1619 { 1620 int rc = 0; 1621 1622 QETH_CARD_TEXT(card, 3, "clhacrd"); 1623 1624 if (halt) 1625 rc = qeth_halt_channels(card); 1626 if (rc) 1627 return rc; 1628 return qeth_clear_channels(card); 1629 } 1630 1631 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1632 { 1633 int rc = 0; 1634 1635 QETH_CARD_TEXT(card, 3, "qdioclr"); 1636 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1637 QETH_QDIO_CLEANING)) { 1638 case QETH_QDIO_ESTABLISHED: 1639 if (card->info.type == QETH_CARD_TYPE_IQD) 1640 rc = qdio_shutdown(CARD_DDEV(card), 1641 QDIO_FLAG_CLEANUP_USING_HALT); 1642 else 1643 rc = qdio_shutdown(CARD_DDEV(card), 1644 QDIO_FLAG_CLEANUP_USING_CLEAR); 1645 if (rc) 1646 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1647 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1648 break; 1649 case QETH_QDIO_CLEANING: 1650 return rc; 1651 default: 1652 break; 1653 } 1654 rc = qeth_clear_halt_card(card, use_halt); 1655 if (rc) 1656 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1657 card->state = CARD_STATE_DOWN; 1658 return rc; 1659 } 1660 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1661 1662 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1663 int *length) 1664 { 1665 struct ciw *ciw; 1666 char *rcd_buf; 1667 int ret; 1668 struct qeth_channel *channel = &card->data; 1669 unsigned long flags; 1670 1671 /* 1672 * scan for RCD command in extended SenseID data 1673 */ 1674 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1675 if (!ciw || ciw->cmd == 0) 1676 return -EOPNOTSUPP; 1677 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1678 if (!rcd_buf) 1679 return -ENOMEM; 1680 1681 channel->ccw.cmd_code = ciw->cmd; 1682 channel->ccw.cda = (__u32) __pa(rcd_buf); 1683 channel->ccw.count = ciw->count; 1684 channel->ccw.flags = CCW_FLAG_SLI; 1685 channel->state = CH_STATE_RCD; 1686 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1687 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1688 QETH_RCD_PARM, LPM_ANYPATH, 0, 1689 QETH_RCD_TIMEOUT); 1690 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1691 if (!ret) 1692 wait_event(card->wait_q, 1693 (channel->state == CH_STATE_RCD_DONE || 1694 channel->state == CH_STATE_DOWN)); 1695 if (channel->state == CH_STATE_DOWN) 1696 ret = -EIO; 1697 else 1698 channel->state = CH_STATE_DOWN; 1699 if (ret) { 1700 kfree(rcd_buf); 1701 *buffer = NULL; 1702 *length = 0; 1703 } else { 1704 *length = ciw->count; 1705 *buffer = rcd_buf; 1706 } 1707 return ret; 1708 } 1709 1710 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1711 { 1712 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1713 card->info.chpid = prcd[30]; 1714 card->info.unit_addr2 = prcd[31]; 1715 card->info.cula = prcd[63]; 1716 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1717 (prcd[0x11] == _ascebc['M'])); 1718 } 1719 1720 /* Determine whether the device requires a specific layer discipline */ 1721 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1722 { 1723 if (card->info.type == QETH_CARD_TYPE_OSM || 1724 card->info.type == QETH_CARD_TYPE_OSN) { 1725 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1726 return QETH_DISCIPLINE_LAYER2; 1727 } 1728 1729 /* virtual HiperSocket is L3 only: */ 1730 if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) { 1731 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1732 return QETH_DISCIPLINE_LAYER3; 1733 } 1734 1735 QETH_DBF_TEXT(SETUP, 3, "force no"); 1736 return QETH_DISCIPLINE_UNDETERMINED; 1737 } 1738 1739 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1740 { 1741 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1742 1743 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1744 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1745 card->info.blkt.time_total = 0; 1746 card->info.blkt.inter_packet = 0; 1747 card->info.blkt.inter_packet_jumbo = 0; 1748 } else { 1749 card->info.blkt.time_total = 250; 1750 card->info.blkt.inter_packet = 5; 1751 card->info.blkt.inter_packet_jumbo = 15; 1752 } 1753 } 1754 1755 static void qeth_init_tokens(struct qeth_card *card) 1756 { 1757 card->token.issuer_rm_w = 0x00010103UL; 1758 card->token.cm_filter_w = 0x00010108UL; 1759 card->token.cm_connection_w = 0x0001010aUL; 1760 card->token.ulp_filter_w = 0x0001010bUL; 1761 card->token.ulp_connection_w = 0x0001010dUL; 1762 } 1763 1764 static void qeth_init_func_level(struct qeth_card *card) 1765 { 1766 switch (card->info.type) { 1767 case QETH_CARD_TYPE_IQD: 1768 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1769 break; 1770 case QETH_CARD_TYPE_OSD: 1771 case QETH_CARD_TYPE_OSN: 1772 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1773 break; 1774 default: 1775 break; 1776 } 1777 } 1778 1779 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1780 void (*idx_reply_cb)(struct qeth_channel *, 1781 struct qeth_cmd_buffer *)) 1782 { 1783 struct qeth_cmd_buffer *iob; 1784 unsigned long flags; 1785 int rc; 1786 struct qeth_card *card; 1787 1788 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1789 card = CARD_FROM_CDEV(channel->ccwdev); 1790 iob = qeth_get_buffer(channel); 1791 if (!iob) 1792 return -ENOMEM; 1793 iob->callback = idx_reply_cb; 1794 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1795 channel->ccw.count = QETH_BUFSIZE; 1796 channel->ccw.cda = (__u32) __pa(iob->data); 1797 1798 wait_event(card->wait_q, 1799 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1800 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1801 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1802 rc = ccw_device_start(channel->ccwdev, 1803 &channel->ccw, (addr_t) iob, 0, 0); 1804 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1805 1806 if (rc) { 1807 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1808 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1809 atomic_set(&channel->irq_pending, 0); 1810 wake_up(&card->wait_q); 1811 return rc; 1812 } 1813 rc = wait_event_interruptible_timeout(card->wait_q, 1814 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1815 if (rc == -ERESTARTSYS) 1816 return rc; 1817 if (channel->state != CH_STATE_UP) { 1818 rc = -ETIME; 1819 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1820 qeth_clear_cmd_buffers(channel); 1821 } else 1822 rc = 0; 1823 return rc; 1824 } 1825 1826 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1827 void (*idx_reply_cb)(struct qeth_channel *, 1828 struct qeth_cmd_buffer *)) 1829 { 1830 struct qeth_card *card; 1831 struct qeth_cmd_buffer *iob; 1832 unsigned long flags; 1833 __u16 temp; 1834 __u8 tmp; 1835 int rc; 1836 struct ccw_dev_id temp_devid; 1837 1838 card = CARD_FROM_CDEV(channel->ccwdev); 1839 1840 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1841 1842 iob = qeth_get_buffer(channel); 1843 if (!iob) 1844 return -ENOMEM; 1845 iob->callback = idx_reply_cb; 1846 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1847 channel->ccw.count = IDX_ACTIVATE_SIZE; 1848 channel->ccw.cda = (__u32) __pa(iob->data); 1849 if (channel == &card->write) { 1850 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1851 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1852 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1853 card->seqno.trans_hdr++; 1854 } else { 1855 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1856 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1857 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1858 } 1859 tmp = ((__u8)card->info.portno) | 0x80; 1860 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1861 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1862 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1863 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1864 &card->info.func_level, sizeof(__u16)); 1865 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1866 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1867 temp = (card->info.cula << 8) + card->info.unit_addr2; 1868 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1869 1870 wait_event(card->wait_q, 1871 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1872 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1873 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1874 rc = ccw_device_start(channel->ccwdev, 1875 &channel->ccw, (addr_t) iob, 0, 0); 1876 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1877 1878 if (rc) { 1879 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1880 rc); 1881 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1882 atomic_set(&channel->irq_pending, 0); 1883 wake_up(&card->wait_q); 1884 return rc; 1885 } 1886 rc = wait_event_interruptible_timeout(card->wait_q, 1887 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1888 if (rc == -ERESTARTSYS) 1889 return rc; 1890 if (channel->state != CH_STATE_ACTIVATING) { 1891 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1892 " failed to recover an error on the device\n"); 1893 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1894 dev_name(&channel->ccwdev->dev)); 1895 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1896 qeth_clear_cmd_buffers(channel); 1897 return -ETIME; 1898 } 1899 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1900 } 1901 1902 static int qeth_peer_func_level(int level) 1903 { 1904 if ((level & 0xff) == 8) 1905 return (level & 0xff) + 0x400; 1906 if (((level >> 8) & 3) == 1) 1907 return (level & 0xff) + 0x200; 1908 return level; 1909 } 1910 1911 static void qeth_idx_write_cb(struct qeth_channel *channel, 1912 struct qeth_cmd_buffer *iob) 1913 { 1914 struct qeth_card *card; 1915 __u16 temp; 1916 1917 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1918 1919 if (channel->state == CH_STATE_DOWN) { 1920 channel->state = CH_STATE_ACTIVATING; 1921 goto out; 1922 } 1923 card = CARD_FROM_CDEV(channel->ccwdev); 1924 1925 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1926 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1927 dev_err(&card->write.ccwdev->dev, 1928 "The adapter is used exclusively by another " 1929 "host\n"); 1930 else 1931 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1932 " negative reply\n", 1933 dev_name(&card->write.ccwdev->dev)); 1934 goto out; 1935 } 1936 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1937 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1938 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1939 "function level mismatch (sent: 0x%x, received: " 1940 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 1941 card->info.func_level, temp); 1942 goto out; 1943 } 1944 channel->state = CH_STATE_UP; 1945 out: 1946 qeth_release_buffer(channel, iob); 1947 } 1948 1949 static void qeth_idx_read_cb(struct qeth_channel *channel, 1950 struct qeth_cmd_buffer *iob) 1951 { 1952 struct qeth_card *card; 1953 __u16 temp; 1954 1955 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1956 if (channel->state == CH_STATE_DOWN) { 1957 channel->state = CH_STATE_ACTIVATING; 1958 goto out; 1959 } 1960 1961 card = CARD_FROM_CDEV(channel->ccwdev); 1962 if (qeth_check_idx_response(card, iob->data)) 1963 goto out; 1964 1965 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1966 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1967 case QETH_IDX_ACT_ERR_EXCL: 1968 dev_err(&card->write.ccwdev->dev, 1969 "The adapter is used exclusively by another " 1970 "host\n"); 1971 break; 1972 case QETH_IDX_ACT_ERR_AUTH: 1973 case QETH_IDX_ACT_ERR_AUTH_USER: 1974 dev_err(&card->read.ccwdev->dev, 1975 "Setting the device online failed because of " 1976 "insufficient authorization\n"); 1977 break; 1978 default: 1979 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1980 " negative reply\n", 1981 dev_name(&card->read.ccwdev->dev)); 1982 } 1983 QETH_CARD_TEXT_(card, 2, "idxread%c", 1984 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1985 goto out; 1986 } 1987 1988 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1989 if (temp != qeth_peer_func_level(card->info.func_level)) { 1990 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 1991 "level mismatch (sent: 0x%x, received: 0x%x)\n", 1992 dev_name(&card->read.ccwdev->dev), 1993 card->info.func_level, temp); 1994 goto out; 1995 } 1996 memcpy(&card->token.issuer_rm_r, 1997 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1998 QETH_MPC_TOKEN_LENGTH); 1999 memcpy(&card->info.mcl_level[0], 2000 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2001 channel->state = CH_STATE_UP; 2002 out: 2003 qeth_release_buffer(channel, iob); 2004 } 2005 2006 void qeth_prepare_control_data(struct qeth_card *card, int len, 2007 struct qeth_cmd_buffer *iob) 2008 { 2009 qeth_setup_ccw(&card->write, iob->data, len); 2010 iob->callback = qeth_release_buffer; 2011 2012 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2013 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2014 card->seqno.trans_hdr++; 2015 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2016 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2017 card->seqno.pdu_hdr++; 2018 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2019 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2020 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2021 } 2022 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2023 2024 /** 2025 * qeth_send_control_data() - send control command to the card 2026 * @card: qeth_card structure pointer 2027 * @len: size of the command buffer 2028 * @iob: qeth_cmd_buffer pointer 2029 * @reply_cb: callback function pointer 2030 * @cb_card: pointer to the qeth_card structure 2031 * @cb_reply: pointer to the qeth_reply structure 2032 * @cb_cmd: pointer to the original iob for non-IPA 2033 * commands, or to the qeth_ipa_cmd structure 2034 * for the IPA commands. 2035 * @reply_param: private pointer passed to the callback 2036 * 2037 * Returns the value of the `return_code' field of the response 2038 * block returned from the hardware, or other error indication. 2039 * Value of zero indicates successful execution of the command. 2040 * 2041 * Callback function gets called one or more times, with cb_cmd 2042 * pointing to the response returned by the hardware. Callback 2043 * function must return non-zero if more reply blocks are expected, 2044 * and zero if the last or only reply block is received. Callback 2045 * function can get the value of the reply_param pointer from the 2046 * field 'param' of the structure qeth_reply. 2047 */ 2048 2049 int qeth_send_control_data(struct qeth_card *card, int len, 2050 struct qeth_cmd_buffer *iob, 2051 int (*reply_cb)(struct qeth_card *cb_card, 2052 struct qeth_reply *cb_reply, 2053 unsigned long cb_cmd), 2054 void *reply_param) 2055 { 2056 int rc; 2057 unsigned long flags; 2058 struct qeth_reply *reply = NULL; 2059 unsigned long timeout, event_timeout; 2060 struct qeth_ipa_cmd *cmd; 2061 2062 QETH_CARD_TEXT(card, 2, "sendctl"); 2063 2064 if (card->read_or_write_problem) { 2065 qeth_release_buffer(iob->channel, iob); 2066 return -EIO; 2067 } 2068 reply = qeth_alloc_reply(card); 2069 if (!reply) { 2070 return -ENOMEM; 2071 } 2072 reply->callback = reply_cb; 2073 reply->param = reply_param; 2074 if (card->state == CARD_STATE_DOWN) 2075 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2076 else 2077 reply->seqno = card->seqno.ipa++; 2078 init_waitqueue_head(&reply->wait_q); 2079 spin_lock_irqsave(&card->lock, flags); 2080 list_add_tail(&reply->list, &card->cmd_waiter_list); 2081 spin_unlock_irqrestore(&card->lock, flags); 2082 2083 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2084 qeth_prepare_control_data(card, len, iob); 2085 2086 if (IS_IPA(iob->data)) 2087 event_timeout = QETH_IPA_TIMEOUT; 2088 else 2089 event_timeout = QETH_TIMEOUT; 2090 timeout = jiffies + event_timeout; 2091 2092 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2093 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2094 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2095 (addr_t) iob, 0, 0); 2096 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2097 if (rc) { 2098 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2099 "ccw_device_start rc = %i\n", 2100 dev_name(&card->write.ccwdev->dev), rc); 2101 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2102 spin_lock_irqsave(&card->lock, flags); 2103 list_del_init(&reply->list); 2104 qeth_put_reply(reply); 2105 spin_unlock_irqrestore(&card->lock, flags); 2106 qeth_release_buffer(iob->channel, iob); 2107 atomic_set(&card->write.irq_pending, 0); 2108 wake_up(&card->wait_q); 2109 return rc; 2110 } 2111 2112 /* we have only one long running ipassist, since we can ensure 2113 process context of this command we can sleep */ 2114 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2115 if ((cmd->hdr.command == IPA_CMD_SETIP) && 2116 (cmd->hdr.prot_version == QETH_PROT_IPV4)) { 2117 if (!wait_event_timeout(reply->wait_q, 2118 atomic_read(&reply->received), event_timeout)) 2119 goto time_err; 2120 } else { 2121 while (!atomic_read(&reply->received)) { 2122 if (time_after(jiffies, timeout)) 2123 goto time_err; 2124 cpu_relax(); 2125 } 2126 } 2127 2128 if (reply->rc == -EIO) 2129 goto error; 2130 rc = reply->rc; 2131 qeth_put_reply(reply); 2132 return rc; 2133 2134 time_err: 2135 reply->rc = -ETIME; 2136 spin_lock_irqsave(&reply->card->lock, flags); 2137 list_del_init(&reply->list); 2138 spin_unlock_irqrestore(&reply->card->lock, flags); 2139 atomic_inc(&reply->received); 2140 error: 2141 atomic_set(&card->write.irq_pending, 0); 2142 qeth_release_buffer(iob->channel, iob); 2143 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2144 rc = reply->rc; 2145 qeth_put_reply(reply); 2146 return rc; 2147 } 2148 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2149 2150 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2151 unsigned long data) 2152 { 2153 struct qeth_cmd_buffer *iob; 2154 2155 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2156 2157 iob = (struct qeth_cmd_buffer *) data; 2158 memcpy(&card->token.cm_filter_r, 2159 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2160 QETH_MPC_TOKEN_LENGTH); 2161 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2162 return 0; 2163 } 2164 2165 static int qeth_cm_enable(struct qeth_card *card) 2166 { 2167 int rc; 2168 struct qeth_cmd_buffer *iob; 2169 2170 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2171 2172 iob = qeth_wait_for_buffer(&card->write); 2173 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2174 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2175 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2176 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2177 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2178 2179 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2180 qeth_cm_enable_cb, NULL); 2181 return rc; 2182 } 2183 2184 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2185 unsigned long data) 2186 { 2187 2188 struct qeth_cmd_buffer *iob; 2189 2190 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2191 2192 iob = (struct qeth_cmd_buffer *) data; 2193 memcpy(&card->token.cm_connection_r, 2194 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2195 QETH_MPC_TOKEN_LENGTH); 2196 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2197 return 0; 2198 } 2199 2200 static int qeth_cm_setup(struct qeth_card *card) 2201 { 2202 int rc; 2203 struct qeth_cmd_buffer *iob; 2204 2205 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2206 2207 iob = qeth_wait_for_buffer(&card->write); 2208 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2209 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2210 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2211 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2212 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2213 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2214 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2215 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2216 qeth_cm_setup_cb, NULL); 2217 return rc; 2218 2219 } 2220 2221 static int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2222 { 2223 switch (card->info.type) { 2224 case QETH_CARD_TYPE_IQD: 2225 return card->info.max_mtu; 2226 case QETH_CARD_TYPE_OSD: 2227 case QETH_CARD_TYPE_OSX: 2228 if (!card->options.layer2) 2229 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */ 2230 /* fall through */ 2231 default: 2232 return ETH_DATA_LEN; 2233 } 2234 } 2235 2236 static int qeth_get_mtu_outof_framesize(int framesize) 2237 { 2238 switch (framesize) { 2239 case 0x4000: 2240 return 8192; 2241 case 0x6000: 2242 return 16384; 2243 case 0xa000: 2244 return 32768; 2245 case 0xffff: 2246 return 57344; 2247 default: 2248 return 0; 2249 } 2250 } 2251 2252 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2253 { 2254 switch (card->info.type) { 2255 case QETH_CARD_TYPE_OSD: 2256 case QETH_CARD_TYPE_OSM: 2257 case QETH_CARD_TYPE_OSX: 2258 case QETH_CARD_TYPE_IQD: 2259 return ((mtu >= 576) && 2260 (mtu <= card->info.max_mtu)); 2261 case QETH_CARD_TYPE_OSN: 2262 default: 2263 return 1; 2264 } 2265 } 2266 2267 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2268 unsigned long data) 2269 { 2270 2271 __u16 mtu, framesize; 2272 __u16 len; 2273 __u8 link_type; 2274 struct qeth_cmd_buffer *iob; 2275 2276 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2277 2278 iob = (struct qeth_cmd_buffer *) data; 2279 memcpy(&card->token.ulp_filter_r, 2280 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2281 QETH_MPC_TOKEN_LENGTH); 2282 if (card->info.type == QETH_CARD_TYPE_IQD) { 2283 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2284 mtu = qeth_get_mtu_outof_framesize(framesize); 2285 if (!mtu) { 2286 iob->rc = -EINVAL; 2287 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2288 return 0; 2289 } 2290 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2291 /* frame size has changed */ 2292 if (card->dev && 2293 ((card->dev->mtu == card->info.initial_mtu) || 2294 (card->dev->mtu > mtu))) 2295 card->dev->mtu = mtu; 2296 qeth_free_qdio_buffers(card); 2297 } 2298 card->info.initial_mtu = mtu; 2299 card->info.max_mtu = mtu; 2300 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2301 } else { 2302 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2303 iob->data); 2304 card->info.initial_mtu = min(card->info.max_mtu, 2305 qeth_get_initial_mtu_for_card(card)); 2306 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2307 } 2308 2309 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2310 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2311 memcpy(&link_type, 2312 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2313 card->info.link_type = link_type; 2314 } else 2315 card->info.link_type = 0; 2316 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2317 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2318 return 0; 2319 } 2320 2321 static int qeth_ulp_enable(struct qeth_card *card) 2322 { 2323 int rc; 2324 char prot_type; 2325 struct qeth_cmd_buffer *iob; 2326 2327 /*FIXME: trace view callbacks*/ 2328 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2329 2330 iob = qeth_wait_for_buffer(&card->write); 2331 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2332 2333 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2334 (__u8) card->info.portno; 2335 if (card->options.layer2) 2336 if (card->info.type == QETH_CARD_TYPE_OSN) 2337 prot_type = QETH_PROT_OSN2; 2338 else 2339 prot_type = QETH_PROT_LAYER2; 2340 else 2341 prot_type = QETH_PROT_TCPIP; 2342 2343 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2344 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2345 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2346 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2347 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2348 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2349 qeth_ulp_enable_cb, NULL); 2350 return rc; 2351 2352 } 2353 2354 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2355 unsigned long data) 2356 { 2357 struct qeth_cmd_buffer *iob; 2358 2359 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2360 2361 iob = (struct qeth_cmd_buffer *) data; 2362 memcpy(&card->token.ulp_connection_r, 2363 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2364 QETH_MPC_TOKEN_LENGTH); 2365 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2366 3)) { 2367 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2368 dev_err(&card->gdev->dev, "A connection could not be " 2369 "established because of an OLM limit\n"); 2370 iob->rc = -EMLINK; 2371 } 2372 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2373 return 0; 2374 } 2375 2376 static int qeth_ulp_setup(struct qeth_card *card) 2377 { 2378 int rc; 2379 __u16 temp; 2380 struct qeth_cmd_buffer *iob; 2381 struct ccw_dev_id dev_id; 2382 2383 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2384 2385 iob = qeth_wait_for_buffer(&card->write); 2386 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2387 2388 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2389 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2390 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2391 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2392 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2393 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2394 2395 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2396 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2397 temp = (card->info.cula << 8) + card->info.unit_addr2; 2398 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2399 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2400 qeth_ulp_setup_cb, NULL); 2401 return rc; 2402 } 2403 2404 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2405 { 2406 int rc; 2407 struct qeth_qdio_out_buffer *newbuf; 2408 2409 rc = 0; 2410 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2411 if (!newbuf) { 2412 rc = -ENOMEM; 2413 goto out; 2414 } 2415 newbuf->buffer = q->qdio_bufs[bidx]; 2416 skb_queue_head_init(&newbuf->skb_list); 2417 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2418 newbuf->q = q; 2419 newbuf->aob = NULL; 2420 newbuf->next_pending = q->bufs[bidx]; 2421 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2422 q->bufs[bidx] = newbuf; 2423 if (q->bufstates) { 2424 q->bufstates[bidx].user = newbuf; 2425 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2426 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2427 QETH_CARD_TEXT_(q->card, 2, "%lx", 2428 (long) newbuf->next_pending); 2429 } 2430 out: 2431 return rc; 2432 } 2433 2434 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2435 { 2436 if (!q) 2437 return; 2438 2439 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2440 kfree(q); 2441 } 2442 2443 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2444 { 2445 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2446 2447 if (!q) 2448 return NULL; 2449 2450 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2451 kfree(q); 2452 return NULL; 2453 } 2454 return q; 2455 } 2456 2457 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2458 { 2459 int i, j; 2460 2461 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2462 2463 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2464 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2465 return 0; 2466 2467 QETH_DBF_TEXT(SETUP, 2, "inq"); 2468 card->qdio.in_q = qeth_alloc_qdio_queue(); 2469 if (!card->qdio.in_q) 2470 goto out_nomem; 2471 2472 /* inbound buffer pool */ 2473 if (qeth_alloc_buffer_pool(card)) 2474 goto out_freeinq; 2475 2476 /* outbound */ 2477 card->qdio.out_qs = 2478 kzalloc(card->qdio.no_out_queues * 2479 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2480 if (!card->qdio.out_qs) 2481 goto out_freepool; 2482 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2483 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2484 if (!card->qdio.out_qs[i]) 2485 goto out_freeoutq; 2486 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2487 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2488 card->qdio.out_qs[i]->queue_no = i; 2489 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2490 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2491 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2492 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2493 goto out_freeoutqbufs; 2494 } 2495 } 2496 2497 /* completion */ 2498 if (qeth_alloc_cq(card)) 2499 goto out_freeoutq; 2500 2501 return 0; 2502 2503 out_freeoutqbufs: 2504 while (j > 0) { 2505 --j; 2506 kmem_cache_free(qeth_qdio_outbuf_cache, 2507 card->qdio.out_qs[i]->bufs[j]); 2508 card->qdio.out_qs[i]->bufs[j] = NULL; 2509 } 2510 out_freeoutq: 2511 while (i > 0) { 2512 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2513 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2514 } 2515 kfree(card->qdio.out_qs); 2516 card->qdio.out_qs = NULL; 2517 out_freepool: 2518 qeth_free_buffer_pool(card); 2519 out_freeinq: 2520 qeth_free_qdio_queue(card->qdio.in_q); 2521 card->qdio.in_q = NULL; 2522 out_nomem: 2523 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2524 return -ENOMEM; 2525 } 2526 2527 static void qeth_free_qdio_buffers(struct qeth_card *card) 2528 { 2529 int i, j; 2530 2531 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2532 QETH_QDIO_UNINITIALIZED) 2533 return; 2534 2535 qeth_free_cq(card); 2536 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2537 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2538 if (card->qdio.in_q->bufs[j].rx_skb) 2539 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2540 } 2541 qeth_free_qdio_queue(card->qdio.in_q); 2542 card->qdio.in_q = NULL; 2543 /* inbound buffer pool */ 2544 qeth_free_buffer_pool(card); 2545 /* free outbound qdio_qs */ 2546 if (card->qdio.out_qs) { 2547 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2548 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2549 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2550 } 2551 kfree(card->qdio.out_qs); 2552 card->qdio.out_qs = NULL; 2553 } 2554 } 2555 2556 static void qeth_create_qib_param_field(struct qeth_card *card, 2557 char *param_field) 2558 { 2559 2560 param_field[0] = _ascebc['P']; 2561 param_field[1] = _ascebc['C']; 2562 param_field[2] = _ascebc['I']; 2563 param_field[3] = _ascebc['T']; 2564 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2565 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2566 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2567 } 2568 2569 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2570 char *param_field) 2571 { 2572 param_field[16] = _ascebc['B']; 2573 param_field[17] = _ascebc['L']; 2574 param_field[18] = _ascebc['K']; 2575 param_field[19] = _ascebc['T']; 2576 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2577 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2578 *((unsigned int *) (¶m_field[28])) = 2579 card->info.blkt.inter_packet_jumbo; 2580 } 2581 2582 static int qeth_qdio_activate(struct qeth_card *card) 2583 { 2584 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2585 return qdio_activate(CARD_DDEV(card)); 2586 } 2587 2588 static int qeth_dm_act(struct qeth_card *card) 2589 { 2590 int rc; 2591 struct qeth_cmd_buffer *iob; 2592 2593 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2594 2595 iob = qeth_wait_for_buffer(&card->write); 2596 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2597 2598 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2599 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2600 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2601 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2602 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2603 return rc; 2604 } 2605 2606 static int qeth_mpc_initialize(struct qeth_card *card) 2607 { 2608 int rc; 2609 2610 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2611 2612 rc = qeth_issue_next_read(card); 2613 if (rc) { 2614 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2615 return rc; 2616 } 2617 rc = qeth_cm_enable(card); 2618 if (rc) { 2619 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2620 goto out_qdio; 2621 } 2622 rc = qeth_cm_setup(card); 2623 if (rc) { 2624 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2625 goto out_qdio; 2626 } 2627 rc = qeth_ulp_enable(card); 2628 if (rc) { 2629 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2630 goto out_qdio; 2631 } 2632 rc = qeth_ulp_setup(card); 2633 if (rc) { 2634 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2635 goto out_qdio; 2636 } 2637 rc = qeth_alloc_qdio_buffers(card); 2638 if (rc) { 2639 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2640 goto out_qdio; 2641 } 2642 rc = qeth_qdio_establish(card); 2643 if (rc) { 2644 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2645 qeth_free_qdio_buffers(card); 2646 goto out_qdio; 2647 } 2648 rc = qeth_qdio_activate(card); 2649 if (rc) { 2650 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2651 goto out_qdio; 2652 } 2653 rc = qeth_dm_act(card); 2654 if (rc) { 2655 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2656 goto out_qdio; 2657 } 2658 2659 return 0; 2660 out_qdio: 2661 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2662 qdio_free(CARD_DDEV(card)); 2663 return rc; 2664 } 2665 2666 void qeth_print_status_message(struct qeth_card *card) 2667 { 2668 switch (card->info.type) { 2669 case QETH_CARD_TYPE_OSD: 2670 case QETH_CARD_TYPE_OSM: 2671 case QETH_CARD_TYPE_OSX: 2672 /* VM will use a non-zero first character 2673 * to indicate a HiperSockets like reporting 2674 * of the level OSA sets the first character to zero 2675 * */ 2676 if (!card->info.mcl_level[0]) { 2677 sprintf(card->info.mcl_level, "%02x%02x", 2678 card->info.mcl_level[2], 2679 card->info.mcl_level[3]); 2680 break; 2681 } 2682 /* fallthrough */ 2683 case QETH_CARD_TYPE_IQD: 2684 if ((card->info.guestlan) || 2685 (card->info.mcl_level[0] & 0x80)) { 2686 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2687 card->info.mcl_level[0]]; 2688 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2689 card->info.mcl_level[1]]; 2690 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2691 card->info.mcl_level[2]]; 2692 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2693 card->info.mcl_level[3]]; 2694 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2695 } 2696 break; 2697 default: 2698 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2699 } 2700 dev_info(&card->gdev->dev, 2701 "Device is a%s card%s%s%s\nwith link type %s.\n", 2702 qeth_get_cardname(card), 2703 (card->info.mcl_level[0]) ? " (level: " : "", 2704 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2705 (card->info.mcl_level[0]) ? ")" : "", 2706 qeth_get_cardname_short(card)); 2707 } 2708 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2709 2710 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2711 { 2712 struct qeth_buffer_pool_entry *entry; 2713 2714 QETH_CARD_TEXT(card, 5, "inwrklst"); 2715 2716 list_for_each_entry(entry, 2717 &card->qdio.init_pool.entry_list, init_list) { 2718 qeth_put_buffer_pool_entry(card, entry); 2719 } 2720 } 2721 2722 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2723 struct qeth_card *card) 2724 { 2725 struct list_head *plh; 2726 struct qeth_buffer_pool_entry *entry; 2727 int i, free; 2728 struct page *page; 2729 2730 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2731 return NULL; 2732 2733 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2734 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2735 free = 1; 2736 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2737 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2738 free = 0; 2739 break; 2740 } 2741 } 2742 if (free) { 2743 list_del_init(&entry->list); 2744 return entry; 2745 } 2746 } 2747 2748 /* no free buffer in pool so take first one and swap pages */ 2749 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2750 struct qeth_buffer_pool_entry, list); 2751 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2752 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2753 page = alloc_page(GFP_ATOMIC); 2754 if (!page) { 2755 return NULL; 2756 } else { 2757 free_page((unsigned long)entry->elements[i]); 2758 entry->elements[i] = page_address(page); 2759 if (card->options.performance_stats) 2760 card->perf_stats.sg_alloc_page_rx++; 2761 } 2762 } 2763 } 2764 list_del_init(&entry->list); 2765 return entry; 2766 } 2767 2768 static int qeth_init_input_buffer(struct qeth_card *card, 2769 struct qeth_qdio_buffer *buf) 2770 { 2771 struct qeth_buffer_pool_entry *pool_entry; 2772 int i; 2773 2774 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2775 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 2776 if (!buf->rx_skb) 2777 return 1; 2778 } 2779 2780 pool_entry = qeth_find_free_buffer_pool_entry(card); 2781 if (!pool_entry) 2782 return 1; 2783 2784 /* 2785 * since the buffer is accessed only from the input_tasklet 2786 * there shouldn't be a need to synchronize; also, since we use 2787 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2788 * buffers 2789 */ 2790 2791 buf->pool_entry = pool_entry; 2792 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2793 buf->buffer->element[i].length = PAGE_SIZE; 2794 buf->buffer->element[i].addr = pool_entry->elements[i]; 2795 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2796 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2797 else 2798 buf->buffer->element[i].eflags = 0; 2799 buf->buffer->element[i].sflags = 0; 2800 } 2801 return 0; 2802 } 2803 2804 int qeth_init_qdio_queues(struct qeth_card *card) 2805 { 2806 int i, j; 2807 int rc; 2808 2809 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2810 2811 /* inbound queue */ 2812 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, 2813 QDIO_MAX_BUFFERS_PER_Q); 2814 qeth_initialize_working_pool_list(card); 2815 /*give only as many buffers to hardware as we have buffer pool entries*/ 2816 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2817 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2818 card->qdio.in_q->next_buf_to_init = 2819 card->qdio.in_buf_pool.buf_count - 1; 2820 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2821 card->qdio.in_buf_pool.buf_count - 1); 2822 if (rc) { 2823 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2824 return rc; 2825 } 2826 2827 /* completion */ 2828 rc = qeth_cq_init(card); 2829 if (rc) { 2830 return rc; 2831 } 2832 2833 /* outbound queue */ 2834 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2835 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2836 QDIO_MAX_BUFFERS_PER_Q); 2837 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2838 qeth_clear_output_buffer(card->qdio.out_qs[i], 2839 card->qdio.out_qs[i]->bufs[j], 2840 QETH_QDIO_BUF_EMPTY); 2841 } 2842 card->qdio.out_qs[i]->card = card; 2843 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2844 card->qdio.out_qs[i]->do_pack = 0; 2845 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2846 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2847 atomic_set(&card->qdio.out_qs[i]->state, 2848 QETH_OUT_Q_UNLOCKED); 2849 } 2850 return 0; 2851 } 2852 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2853 2854 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2855 { 2856 switch (link_type) { 2857 case QETH_LINK_TYPE_HSTR: 2858 return 2; 2859 default: 2860 return 1; 2861 } 2862 } 2863 2864 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2865 struct qeth_ipa_cmd *cmd, __u8 command, 2866 enum qeth_prot_versions prot) 2867 { 2868 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2869 cmd->hdr.command = command; 2870 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2871 cmd->hdr.seqno = card->seqno.ipa; 2872 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2873 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2874 if (card->options.layer2) 2875 cmd->hdr.prim_version_no = 2; 2876 else 2877 cmd->hdr.prim_version_no = 1; 2878 cmd->hdr.param_count = 1; 2879 cmd->hdr.prot_version = prot; 2880 cmd->hdr.ipa_supported = 0; 2881 cmd->hdr.ipa_enabled = 0; 2882 } 2883 2884 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2885 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2886 { 2887 struct qeth_cmd_buffer *iob; 2888 struct qeth_ipa_cmd *cmd; 2889 2890 iob = qeth_get_buffer(&card->write); 2891 if (iob) { 2892 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2893 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2894 } else { 2895 dev_warn(&card->gdev->dev, 2896 "The qeth driver ran out of channel command buffers\n"); 2897 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2898 dev_name(&card->gdev->dev)); 2899 } 2900 2901 return iob; 2902 } 2903 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2904 2905 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2906 char prot_type) 2907 { 2908 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2909 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2910 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2911 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2912 } 2913 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2914 2915 /** 2916 * qeth_send_ipa_cmd() - send an IPA command 2917 * 2918 * See qeth_send_control_data() for explanation of the arguments. 2919 */ 2920 2921 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2922 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2923 unsigned long), 2924 void *reply_param) 2925 { 2926 int rc; 2927 char prot_type; 2928 2929 QETH_CARD_TEXT(card, 4, "sendipa"); 2930 2931 if (card->options.layer2) 2932 if (card->info.type == QETH_CARD_TYPE_OSN) 2933 prot_type = QETH_PROT_OSN2; 2934 else 2935 prot_type = QETH_PROT_LAYER2; 2936 else 2937 prot_type = QETH_PROT_TCPIP; 2938 qeth_prepare_ipa_cmd(card, iob, prot_type); 2939 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2940 iob, reply_cb, reply_param); 2941 if (rc == -ETIME) { 2942 qeth_clear_ipacmd_list(card); 2943 qeth_schedule_recovery(card); 2944 } 2945 return rc; 2946 } 2947 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2948 2949 static int qeth_send_startlan(struct qeth_card *card) 2950 { 2951 int rc; 2952 struct qeth_cmd_buffer *iob; 2953 2954 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2955 2956 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2957 if (!iob) 2958 return -ENOMEM; 2959 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2960 return rc; 2961 } 2962 2963 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 2964 struct qeth_reply *reply, unsigned long data) 2965 { 2966 struct qeth_ipa_cmd *cmd; 2967 2968 QETH_CARD_TEXT(card, 4, "defadpcb"); 2969 2970 cmd = (struct qeth_ipa_cmd *) data; 2971 if (cmd->hdr.return_code == 0) 2972 cmd->hdr.return_code = 2973 cmd->data.setadapterparms.hdr.return_code; 2974 return 0; 2975 } 2976 2977 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2978 struct qeth_reply *reply, unsigned long data) 2979 { 2980 struct qeth_ipa_cmd *cmd; 2981 2982 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2983 2984 cmd = (struct qeth_ipa_cmd *) data; 2985 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2986 card->info.link_type = 2987 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2988 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2989 } 2990 card->options.adp.supported_funcs = 2991 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2992 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 2993 } 2994 2995 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2996 __u32 command, __u32 cmdlen) 2997 { 2998 struct qeth_cmd_buffer *iob; 2999 struct qeth_ipa_cmd *cmd; 3000 3001 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3002 QETH_PROT_IPV4); 3003 if (iob) { 3004 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3005 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3006 cmd->data.setadapterparms.hdr.command_code = command; 3007 cmd->data.setadapterparms.hdr.used_total = 1; 3008 cmd->data.setadapterparms.hdr.seq_no = 1; 3009 } 3010 3011 return iob; 3012 } 3013 3014 int qeth_query_setadapterparms(struct qeth_card *card) 3015 { 3016 int rc; 3017 struct qeth_cmd_buffer *iob; 3018 3019 QETH_CARD_TEXT(card, 3, "queryadp"); 3020 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3021 sizeof(struct qeth_ipacmd_setadpparms)); 3022 if (!iob) 3023 return -ENOMEM; 3024 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3025 return rc; 3026 } 3027 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3028 3029 static int qeth_query_ipassists_cb(struct qeth_card *card, 3030 struct qeth_reply *reply, unsigned long data) 3031 { 3032 struct qeth_ipa_cmd *cmd; 3033 3034 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3035 3036 cmd = (struct qeth_ipa_cmd *) data; 3037 3038 switch (cmd->hdr.return_code) { 3039 case IPA_RC_NOTSUPP: 3040 case IPA_RC_L2_UNSUPPORTED_CMD: 3041 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3042 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3043 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3044 return -0; 3045 default: 3046 if (cmd->hdr.return_code) { 3047 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3048 "rc=%d\n", 3049 dev_name(&card->gdev->dev), 3050 cmd->hdr.return_code); 3051 return 0; 3052 } 3053 } 3054 3055 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3056 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3057 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3058 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3059 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3060 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3061 } else 3062 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3063 "\n", dev_name(&card->gdev->dev)); 3064 return 0; 3065 } 3066 3067 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3068 { 3069 int rc; 3070 struct qeth_cmd_buffer *iob; 3071 3072 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3073 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3074 if (!iob) 3075 return -ENOMEM; 3076 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3077 return rc; 3078 } 3079 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3080 3081 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3082 struct qeth_reply *reply, unsigned long data) 3083 { 3084 struct qeth_ipa_cmd *cmd; 3085 struct qeth_switch_info *sw_info; 3086 struct qeth_query_switch_attributes *attrs; 3087 3088 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3089 cmd = (struct qeth_ipa_cmd *) data; 3090 sw_info = (struct qeth_switch_info *)reply->param; 3091 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3092 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3093 sw_info->capabilities = attrs->capabilities; 3094 sw_info->settings = attrs->settings; 3095 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3096 sw_info->settings); 3097 } 3098 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3099 3100 return 0; 3101 } 3102 3103 int qeth_query_switch_attributes(struct qeth_card *card, 3104 struct qeth_switch_info *sw_info) 3105 { 3106 struct qeth_cmd_buffer *iob; 3107 3108 QETH_CARD_TEXT(card, 2, "qswiattr"); 3109 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3110 return -EOPNOTSUPP; 3111 if (!netif_carrier_ok(card->dev)) 3112 return -ENOMEDIUM; 3113 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3114 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3115 if (!iob) 3116 return -ENOMEM; 3117 return qeth_send_ipa_cmd(card, iob, 3118 qeth_query_switch_attributes_cb, sw_info); 3119 } 3120 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3121 3122 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3123 struct qeth_reply *reply, unsigned long data) 3124 { 3125 struct qeth_ipa_cmd *cmd; 3126 __u16 rc; 3127 3128 cmd = (struct qeth_ipa_cmd *)data; 3129 rc = cmd->hdr.return_code; 3130 if (rc) 3131 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3132 else 3133 card->info.diagass_support = cmd->data.diagass.ext; 3134 return 0; 3135 } 3136 3137 static int qeth_query_setdiagass(struct qeth_card *card) 3138 { 3139 struct qeth_cmd_buffer *iob; 3140 struct qeth_ipa_cmd *cmd; 3141 3142 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3143 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3144 if (!iob) 3145 return -ENOMEM; 3146 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3147 cmd->data.diagass.subcmd_len = 16; 3148 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3149 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3150 } 3151 3152 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3153 { 3154 unsigned long info = get_zeroed_page(GFP_KERNEL); 3155 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3156 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3157 struct ccw_dev_id ccwid; 3158 int level; 3159 3160 tid->chpid = card->info.chpid; 3161 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3162 tid->ssid = ccwid.ssid; 3163 tid->devno = ccwid.devno; 3164 if (!info) 3165 return; 3166 level = stsi(NULL, 0, 0, 0); 3167 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3168 tid->lparnr = info222->lpar_number; 3169 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3170 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3171 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3172 } 3173 free_page(info); 3174 return; 3175 } 3176 3177 static int qeth_hw_trap_cb(struct qeth_card *card, 3178 struct qeth_reply *reply, unsigned long data) 3179 { 3180 struct qeth_ipa_cmd *cmd; 3181 __u16 rc; 3182 3183 cmd = (struct qeth_ipa_cmd *)data; 3184 rc = cmd->hdr.return_code; 3185 if (rc) 3186 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3187 return 0; 3188 } 3189 3190 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3191 { 3192 struct qeth_cmd_buffer *iob; 3193 struct qeth_ipa_cmd *cmd; 3194 3195 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3196 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3197 if (!iob) 3198 return -ENOMEM; 3199 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3200 cmd->data.diagass.subcmd_len = 80; 3201 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3202 cmd->data.diagass.type = 1; 3203 cmd->data.diagass.action = action; 3204 switch (action) { 3205 case QETH_DIAGS_TRAP_ARM: 3206 cmd->data.diagass.options = 0x0003; 3207 cmd->data.diagass.ext = 0x00010000 + 3208 sizeof(struct qeth_trap_id); 3209 qeth_get_trap_id(card, 3210 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3211 break; 3212 case QETH_DIAGS_TRAP_DISARM: 3213 cmd->data.diagass.options = 0x0001; 3214 break; 3215 case QETH_DIAGS_TRAP_CAPTURE: 3216 break; 3217 } 3218 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3219 } 3220 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3221 3222 static int qeth_check_qdio_errors(struct qeth_card *card, 3223 struct qdio_buffer *buf, 3224 unsigned int qdio_error, 3225 const char *dbftext) 3226 { 3227 if (qdio_error) { 3228 QETH_CARD_TEXT(card, 2, dbftext); 3229 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3230 buf->element[15].sflags); 3231 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3232 buf->element[14].sflags); 3233 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3234 if ((buf->element[15].sflags) == 0x12) { 3235 card->stats.rx_dropped++; 3236 return 0; 3237 } else 3238 return 1; 3239 } 3240 return 0; 3241 } 3242 3243 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3244 { 3245 struct qeth_qdio_q *queue = card->qdio.in_q; 3246 struct list_head *lh; 3247 int count; 3248 int i; 3249 int rc; 3250 int newcount = 0; 3251 3252 count = (index < queue->next_buf_to_init)? 3253 card->qdio.in_buf_pool.buf_count - 3254 (queue->next_buf_to_init - index) : 3255 card->qdio.in_buf_pool.buf_count - 3256 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3257 /* only requeue at a certain threshold to avoid SIGAs */ 3258 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3259 for (i = queue->next_buf_to_init; 3260 i < queue->next_buf_to_init + count; ++i) { 3261 if (qeth_init_input_buffer(card, 3262 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3263 break; 3264 } else { 3265 newcount++; 3266 } 3267 } 3268 3269 if (newcount < count) { 3270 /* we are in memory shortage so we switch back to 3271 traditional skb allocation and drop packages */ 3272 atomic_set(&card->force_alloc_skb, 3); 3273 count = newcount; 3274 } else { 3275 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3276 } 3277 3278 if (!count) { 3279 i = 0; 3280 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3281 i++; 3282 if (i == card->qdio.in_buf_pool.buf_count) { 3283 QETH_CARD_TEXT(card, 2, "qsarbw"); 3284 card->reclaim_index = index; 3285 schedule_delayed_work( 3286 &card->buffer_reclaim_work, 3287 QETH_RECLAIM_WORK_TIME); 3288 } 3289 return; 3290 } 3291 3292 /* 3293 * according to old code it should be avoided to requeue all 3294 * 128 buffers in order to benefit from PCI avoidance. 3295 * this function keeps at least one buffer (the buffer at 3296 * 'index') un-requeued -> this buffer is the first buffer that 3297 * will be requeued the next time 3298 */ 3299 if (card->options.performance_stats) { 3300 card->perf_stats.inbound_do_qdio_cnt++; 3301 card->perf_stats.inbound_do_qdio_start_time = 3302 qeth_get_micros(); 3303 } 3304 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3305 queue->next_buf_to_init, count); 3306 if (card->options.performance_stats) 3307 card->perf_stats.inbound_do_qdio_time += 3308 qeth_get_micros() - 3309 card->perf_stats.inbound_do_qdio_start_time; 3310 if (rc) { 3311 QETH_CARD_TEXT(card, 2, "qinberr"); 3312 } 3313 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3314 QDIO_MAX_BUFFERS_PER_Q; 3315 } 3316 } 3317 3318 static void qeth_buffer_reclaim_work(struct work_struct *work) 3319 { 3320 struct qeth_card *card = container_of(work, struct qeth_card, 3321 buffer_reclaim_work.work); 3322 3323 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3324 qeth_queue_input_buffer(card, card->reclaim_index); 3325 } 3326 3327 static void qeth_handle_send_error(struct qeth_card *card, 3328 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3329 { 3330 int sbalf15 = buffer->buffer->element[15].sflags; 3331 3332 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3333 if (card->info.type == QETH_CARD_TYPE_IQD) { 3334 if (sbalf15 == 0) { 3335 qdio_err = 0; 3336 } else { 3337 qdio_err = 1; 3338 } 3339 } 3340 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3341 3342 if (!qdio_err) 3343 return; 3344 3345 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3346 return; 3347 3348 QETH_CARD_TEXT(card, 1, "lnkfail"); 3349 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3350 (u16)qdio_err, (u8)sbalf15); 3351 } 3352 3353 /** 3354 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3355 * @queue: queue to check for packing buffer 3356 * 3357 * Returns number of buffers that were prepared for flush. 3358 */ 3359 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3360 { 3361 struct qeth_qdio_out_buffer *buffer; 3362 3363 buffer = queue->bufs[queue->next_buf_to_fill]; 3364 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3365 (buffer->next_element_to_fill > 0)) { 3366 /* it's a packing buffer */ 3367 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3368 queue->next_buf_to_fill = 3369 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3370 return 1; 3371 } 3372 return 0; 3373 } 3374 3375 /* 3376 * Switched to packing state if the number of used buffers on a queue 3377 * reaches a certain limit. 3378 */ 3379 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3380 { 3381 if (!queue->do_pack) { 3382 if (atomic_read(&queue->used_buffers) 3383 >= QETH_HIGH_WATERMARK_PACK){ 3384 /* switch non-PACKING -> PACKING */ 3385 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3386 if (queue->card->options.performance_stats) 3387 queue->card->perf_stats.sc_dp_p++; 3388 queue->do_pack = 1; 3389 } 3390 } 3391 } 3392 3393 /* 3394 * Switches from packing to non-packing mode. If there is a packing 3395 * buffer on the queue this buffer will be prepared to be flushed. 3396 * In that case 1 is returned to inform the caller. If no buffer 3397 * has to be flushed, zero is returned. 3398 */ 3399 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3400 { 3401 if (queue->do_pack) { 3402 if (atomic_read(&queue->used_buffers) 3403 <= QETH_LOW_WATERMARK_PACK) { 3404 /* switch PACKING -> non-PACKING */ 3405 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3406 if (queue->card->options.performance_stats) 3407 queue->card->perf_stats.sc_p_dp++; 3408 queue->do_pack = 0; 3409 return qeth_prep_flush_pack_buffer(queue); 3410 } 3411 } 3412 return 0; 3413 } 3414 3415 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3416 int count) 3417 { 3418 struct qeth_qdio_out_buffer *buf; 3419 int rc; 3420 int i; 3421 unsigned int qdio_flags; 3422 3423 for (i = index; i < index + count; ++i) { 3424 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3425 buf = queue->bufs[bidx]; 3426 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3427 SBAL_EFLAGS_LAST_ENTRY; 3428 3429 if (queue->bufstates) 3430 queue->bufstates[bidx].user = buf; 3431 3432 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3433 continue; 3434 3435 if (!queue->do_pack) { 3436 if ((atomic_read(&queue->used_buffers) >= 3437 (QETH_HIGH_WATERMARK_PACK - 3438 QETH_WATERMARK_PACK_FUZZ)) && 3439 !atomic_read(&queue->set_pci_flags_count)) { 3440 /* it's likely that we'll go to packing 3441 * mode soon */ 3442 atomic_inc(&queue->set_pci_flags_count); 3443 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3444 } 3445 } else { 3446 if (!atomic_read(&queue->set_pci_flags_count)) { 3447 /* 3448 * there's no outstanding PCI any more, so we 3449 * have to request a PCI to be sure the the PCI 3450 * will wake at some time in the future then we 3451 * can flush packed buffers that might still be 3452 * hanging around, which can happen if no 3453 * further send was requested by the stack 3454 */ 3455 atomic_inc(&queue->set_pci_flags_count); 3456 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3457 } 3458 } 3459 } 3460 3461 netif_trans_update(queue->card->dev); 3462 if (queue->card->options.performance_stats) { 3463 queue->card->perf_stats.outbound_do_qdio_cnt++; 3464 queue->card->perf_stats.outbound_do_qdio_start_time = 3465 qeth_get_micros(); 3466 } 3467 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3468 if (atomic_read(&queue->set_pci_flags_count)) 3469 qdio_flags |= QDIO_FLAG_PCI_OUT; 3470 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3471 queue->queue_no, index, count); 3472 if (queue->card->options.performance_stats) 3473 queue->card->perf_stats.outbound_do_qdio_time += 3474 qeth_get_micros() - 3475 queue->card->perf_stats.outbound_do_qdio_start_time; 3476 atomic_add(count, &queue->used_buffers); 3477 if (rc) { 3478 queue->card->stats.tx_errors += count; 3479 /* ignore temporary SIGA errors without busy condition */ 3480 if (rc == -ENOBUFS) 3481 return; 3482 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3483 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3484 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3485 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3486 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3487 3488 /* this must not happen under normal circumstances. if it 3489 * happens something is really wrong -> recover */ 3490 qeth_schedule_recovery(queue->card); 3491 return; 3492 } 3493 if (queue->card->options.performance_stats) 3494 queue->card->perf_stats.bufs_sent += count; 3495 } 3496 3497 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3498 { 3499 int index; 3500 int flush_cnt = 0; 3501 int q_was_packing = 0; 3502 3503 /* 3504 * check if weed have to switch to non-packing mode or if 3505 * we have to get a pci flag out on the queue 3506 */ 3507 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3508 !atomic_read(&queue->set_pci_flags_count)) { 3509 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3510 QETH_OUT_Q_UNLOCKED) { 3511 /* 3512 * If we get in here, there was no action in 3513 * do_send_packet. So, we check if there is a 3514 * packing buffer to be flushed here. 3515 */ 3516 netif_stop_queue(queue->card->dev); 3517 index = queue->next_buf_to_fill; 3518 q_was_packing = queue->do_pack; 3519 /* queue->do_pack may change */ 3520 barrier(); 3521 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3522 if (!flush_cnt && 3523 !atomic_read(&queue->set_pci_flags_count)) 3524 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3525 if (queue->card->options.performance_stats && 3526 q_was_packing) 3527 queue->card->perf_stats.bufs_sent_pack += 3528 flush_cnt; 3529 if (flush_cnt) 3530 qeth_flush_buffers(queue, index, flush_cnt); 3531 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3532 } 3533 } 3534 } 3535 3536 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3537 unsigned long card_ptr) 3538 { 3539 struct qeth_card *card = (struct qeth_card *)card_ptr; 3540 3541 if (card->dev && (card->dev->flags & IFF_UP)) 3542 napi_schedule(&card->napi); 3543 } 3544 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3545 3546 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3547 { 3548 int rc; 3549 3550 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3551 rc = -1; 3552 goto out; 3553 } else { 3554 if (card->options.cq == cq) { 3555 rc = 0; 3556 goto out; 3557 } 3558 3559 if (card->state != CARD_STATE_DOWN && 3560 card->state != CARD_STATE_RECOVER) { 3561 rc = -1; 3562 goto out; 3563 } 3564 3565 qeth_free_qdio_buffers(card); 3566 card->options.cq = cq; 3567 rc = 0; 3568 } 3569 out: 3570 return rc; 3571 3572 } 3573 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3574 3575 3576 static void qeth_qdio_cq_handler(struct qeth_card *card, 3577 unsigned int qdio_err, 3578 unsigned int queue, int first_element, int count) { 3579 struct qeth_qdio_q *cq = card->qdio.c_q; 3580 int i; 3581 int rc; 3582 3583 if (!qeth_is_cq(card, queue)) 3584 goto out; 3585 3586 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3587 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3588 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3589 3590 if (qdio_err) { 3591 netif_stop_queue(card->dev); 3592 qeth_schedule_recovery(card); 3593 goto out; 3594 } 3595 3596 if (card->options.performance_stats) { 3597 card->perf_stats.cq_cnt++; 3598 card->perf_stats.cq_start_time = qeth_get_micros(); 3599 } 3600 3601 for (i = first_element; i < first_element + count; ++i) { 3602 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3603 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3604 int e; 3605 3606 e = 0; 3607 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3608 buffer->element[e].addr) { 3609 unsigned long phys_aob_addr; 3610 3611 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3612 qeth_qdio_handle_aob(card, phys_aob_addr); 3613 buffer->element[e].addr = NULL; 3614 buffer->element[e].eflags = 0; 3615 buffer->element[e].sflags = 0; 3616 buffer->element[e].length = 0; 3617 3618 ++e; 3619 } 3620 3621 buffer->element[15].eflags = 0; 3622 buffer->element[15].sflags = 0; 3623 } 3624 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3625 card->qdio.c_q->next_buf_to_init, 3626 count); 3627 if (rc) { 3628 dev_warn(&card->gdev->dev, 3629 "QDIO reported an error, rc=%i\n", rc); 3630 QETH_CARD_TEXT(card, 2, "qcqherr"); 3631 } 3632 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3633 + count) % QDIO_MAX_BUFFERS_PER_Q; 3634 3635 netif_wake_queue(card->dev); 3636 3637 if (card->options.performance_stats) { 3638 int delta_t = qeth_get_micros(); 3639 delta_t -= card->perf_stats.cq_start_time; 3640 card->perf_stats.cq_time += delta_t; 3641 } 3642 out: 3643 return; 3644 } 3645 3646 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3647 unsigned int queue, int first_elem, int count, 3648 unsigned long card_ptr) 3649 { 3650 struct qeth_card *card = (struct qeth_card *)card_ptr; 3651 3652 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3653 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3654 3655 if (qeth_is_cq(card, queue)) 3656 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3657 else if (qdio_err) 3658 qeth_schedule_recovery(card); 3659 3660 3661 } 3662 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3663 3664 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3665 unsigned int qdio_error, int __queue, int first_element, 3666 int count, unsigned long card_ptr) 3667 { 3668 struct qeth_card *card = (struct qeth_card *) card_ptr; 3669 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3670 struct qeth_qdio_out_buffer *buffer; 3671 int i; 3672 3673 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3674 if (qdio_error & QDIO_ERROR_FATAL) { 3675 QETH_CARD_TEXT(card, 2, "achkcond"); 3676 netif_stop_queue(card->dev); 3677 qeth_schedule_recovery(card); 3678 return; 3679 } 3680 if (card->options.performance_stats) { 3681 card->perf_stats.outbound_handler_cnt++; 3682 card->perf_stats.outbound_handler_start_time = 3683 qeth_get_micros(); 3684 } 3685 for (i = first_element; i < (first_element + count); ++i) { 3686 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3687 buffer = queue->bufs[bidx]; 3688 qeth_handle_send_error(card, buffer, qdio_error); 3689 3690 if (queue->bufstates && 3691 (queue->bufstates[bidx].flags & 3692 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3693 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3694 3695 if (atomic_cmpxchg(&buffer->state, 3696 QETH_QDIO_BUF_PRIMED, 3697 QETH_QDIO_BUF_PENDING) == 3698 QETH_QDIO_BUF_PRIMED) { 3699 qeth_notify_skbs(queue, buffer, 3700 TX_NOTIFY_PENDING); 3701 } 3702 buffer->aob = queue->bufstates[bidx].aob; 3703 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3704 QETH_CARD_TEXT(queue->card, 5, "aob"); 3705 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3706 virt_to_phys(buffer->aob)); 3707 if (qeth_init_qdio_out_buf(queue, bidx)) { 3708 QETH_CARD_TEXT(card, 2, "outofbuf"); 3709 qeth_schedule_recovery(card); 3710 } 3711 } else { 3712 if (card->options.cq == QETH_CQ_ENABLED) { 3713 enum iucv_tx_notify n; 3714 3715 n = qeth_compute_cq_notification( 3716 buffer->buffer->element[15].sflags, 0); 3717 qeth_notify_skbs(queue, buffer, n); 3718 } 3719 3720 qeth_clear_output_buffer(queue, buffer, 3721 QETH_QDIO_BUF_EMPTY); 3722 } 3723 qeth_cleanup_handled_pending(queue, bidx, 0); 3724 } 3725 atomic_sub(count, &queue->used_buffers); 3726 /* check if we need to do something on this outbound queue */ 3727 if (card->info.type != QETH_CARD_TYPE_IQD) 3728 qeth_check_outbound_queue(queue); 3729 3730 netif_wake_queue(queue->card->dev); 3731 if (card->options.performance_stats) 3732 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3733 card->perf_stats.outbound_handler_start_time; 3734 } 3735 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3736 3737 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3738 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3739 { 3740 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3741 return 2; 3742 return queue_num; 3743 } 3744 3745 /** 3746 * Note: Function assumes that we have 4 outbound queues. 3747 */ 3748 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3749 int ipv, int cast_type) 3750 { 3751 __be16 *tci; 3752 u8 tos; 3753 3754 if (cast_type && card->info.is_multicast_different) 3755 return card->info.is_multicast_different & 3756 (card->qdio.no_out_queues - 1); 3757 3758 switch (card->qdio.do_prio_queueing) { 3759 case QETH_PRIO_Q_ING_TOS: 3760 case QETH_PRIO_Q_ING_PREC: 3761 switch (ipv) { 3762 case 4: 3763 tos = ipv4_get_dsfield(ip_hdr(skb)); 3764 break; 3765 case 6: 3766 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3767 break; 3768 default: 3769 return card->qdio.default_out_queue; 3770 } 3771 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3772 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3773 if (tos & IPTOS_MINCOST) 3774 return qeth_cut_iqd_prio(card, 3); 3775 if (tos & IPTOS_RELIABILITY) 3776 return 2; 3777 if (tos & IPTOS_THROUGHPUT) 3778 return 1; 3779 if (tos & IPTOS_LOWDELAY) 3780 return 0; 3781 break; 3782 case QETH_PRIO_Q_ING_SKB: 3783 if (skb->priority > 5) 3784 return 0; 3785 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3786 case QETH_PRIO_Q_ING_VLAN: 3787 tci = &((struct ethhdr *)skb->data)->h_proto; 3788 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3789 return qeth_cut_iqd_prio(card, 3790 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3791 break; 3792 default: 3793 break; 3794 } 3795 return card->qdio.default_out_queue; 3796 } 3797 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3798 3799 /** 3800 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3801 * @skb: SKB address 3802 * 3803 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3804 * fragmented part of the SKB. Returns zero for linear SKB. 3805 */ 3806 int qeth_get_elements_for_frags(struct sk_buff *skb) 3807 { 3808 int cnt, elements = 0; 3809 3810 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3811 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3812 3813 elements += qeth_get_elements_for_range( 3814 (addr_t)skb_frag_address(frag), 3815 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3816 } 3817 return elements; 3818 } 3819 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3820 3821 /** 3822 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3823 * @card: qeth card structure, to check max. elems. 3824 * @skb: SKB address 3825 * @extra_elems: extra elems needed, to check against max. 3826 * @data_offset: range starts at skb->data + data_offset 3827 * 3828 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3829 * skb data, including linear part and fragments. Checks if the result plus 3830 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3831 * Note: extra_elems is not included in the returned result. 3832 */ 3833 int qeth_get_elements_no(struct qeth_card *card, 3834 struct sk_buff *skb, int extra_elems, int data_offset) 3835 { 3836 int elements = qeth_get_elements_for_range( 3837 (addr_t)skb->data + data_offset, 3838 (addr_t)skb->data + skb_headlen(skb)) + 3839 qeth_get_elements_for_frags(skb); 3840 3841 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3842 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3843 "(Number=%d / Length=%d). Discarded.\n", 3844 elements + extra_elems, skb->len); 3845 return 0; 3846 } 3847 return elements; 3848 } 3849 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3850 3851 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3852 { 3853 int hroom, inpage, rest; 3854 3855 if (((unsigned long)skb->data & PAGE_MASK) != 3856 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3857 hroom = skb_headroom(skb); 3858 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3859 rest = len - inpage; 3860 if (rest > hroom) 3861 return 1; 3862 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3863 skb->data -= rest; 3864 skb->tail -= rest; 3865 *hdr = (struct qeth_hdr *)skb->data; 3866 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3867 } 3868 return 0; 3869 } 3870 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3871 3872 /** 3873 * qeth_push_hdr() - push a qeth_hdr onto an skb. 3874 * @skb: skb that the qeth_hdr should be pushed onto. 3875 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3876 * it contains a valid pointer to a qeth_hdr. 3877 * @len: length of the hdr that needs to be pushed on. 3878 * 3879 * Returns the pushed length. If the header can't be pushed on 3880 * (eg. because it would cross a page boundary), it is allocated from 3881 * the cache instead and 0 is returned. 3882 * Error to create the hdr is indicated by returning with < 0. 3883 */ 3884 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len) 3885 { 3886 if (skb_headroom(skb) >= len && 3887 qeth_get_elements_for_range((addr_t)skb->data - len, 3888 (addr_t)skb->data) == 1) { 3889 *hdr = skb_push(skb, len); 3890 return len; 3891 } 3892 /* fall back */ 3893 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3894 if (!*hdr) 3895 return -ENOMEM; 3896 return 0; 3897 } 3898 EXPORT_SYMBOL_GPL(qeth_push_hdr); 3899 3900 static void __qeth_fill_buffer(struct sk_buff *skb, 3901 struct qeth_qdio_out_buffer *buf, 3902 bool is_first_elem, unsigned int offset) 3903 { 3904 struct qdio_buffer *buffer = buf->buffer; 3905 int element = buf->next_element_to_fill; 3906 int length = skb_headlen(skb) - offset; 3907 char *data = skb->data + offset; 3908 int length_here, cnt; 3909 3910 /* map linear part into buffer element(s) */ 3911 while (length > 0) { 3912 /* length_here is the remaining amount of data in this page */ 3913 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3914 if (length < length_here) 3915 length_here = length; 3916 3917 buffer->element[element].addr = data; 3918 buffer->element[element].length = length_here; 3919 length -= length_here; 3920 if (is_first_elem) { 3921 is_first_elem = false; 3922 if (length || skb_is_nonlinear(skb)) 3923 /* skb needs additional elements */ 3924 buffer->element[element].eflags = 3925 SBAL_EFLAGS_FIRST_FRAG; 3926 else 3927 buffer->element[element].eflags = 0; 3928 } else { 3929 buffer->element[element].eflags = 3930 SBAL_EFLAGS_MIDDLE_FRAG; 3931 } 3932 data += length_here; 3933 element++; 3934 } 3935 3936 /* map page frags into buffer element(s) */ 3937 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3938 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3939 3940 data = skb_frag_address(frag); 3941 length = skb_frag_size(frag); 3942 while (length > 0) { 3943 length_here = PAGE_SIZE - 3944 ((unsigned long) data % PAGE_SIZE); 3945 if (length < length_here) 3946 length_here = length; 3947 3948 buffer->element[element].addr = data; 3949 buffer->element[element].length = length_here; 3950 buffer->element[element].eflags = 3951 SBAL_EFLAGS_MIDDLE_FRAG; 3952 length -= length_here; 3953 data += length_here; 3954 element++; 3955 } 3956 } 3957 3958 if (buffer->element[element - 1].eflags) 3959 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3960 buf->next_element_to_fill = element; 3961 } 3962 3963 /** 3964 * qeth_fill_buffer() - map skb into an output buffer 3965 * @queue: QDIO queue to submit the buffer on 3966 * @buf: buffer to transport the skb 3967 * @skb: skb to map into the buffer 3968 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 3969 * from qeth_core_header_cache. 3970 * @offset: when mapping the skb, start at skb->data + offset 3971 * @hd_len: if > 0, build a dedicated header element of this size 3972 */ 3973 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 3974 struct qeth_qdio_out_buffer *buf, 3975 struct sk_buff *skb, struct qeth_hdr *hdr, 3976 unsigned int offset, unsigned int hd_len) 3977 { 3978 struct qdio_buffer *buffer = buf->buffer; 3979 bool is_first_elem = true; 3980 int flush_cnt = 0; 3981 3982 refcount_inc(&skb->users); 3983 skb_queue_tail(&buf->skb_list, skb); 3984 3985 /* build dedicated header element */ 3986 if (hd_len) { 3987 int element = buf->next_element_to_fill; 3988 is_first_elem = false; 3989 3990 buffer->element[element].addr = hdr; 3991 buffer->element[element].length = hd_len; 3992 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3993 /* remember to free cache-allocated qeth_hdr: */ 3994 buf->is_header[element] = ((void *)hdr != skb->data); 3995 buf->next_element_to_fill++; 3996 } 3997 3998 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 3999 4000 if (!queue->do_pack) { 4001 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4002 /* set state to PRIMED -> will be flushed */ 4003 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4004 flush_cnt = 1; 4005 } else { 4006 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4007 if (queue->card->options.performance_stats) 4008 queue->card->perf_stats.skbs_sent_pack++; 4009 if (buf->next_element_to_fill >= 4010 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4011 /* 4012 * packed buffer if full -> set state PRIMED 4013 * -> will be flushed 4014 */ 4015 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4016 flush_cnt = 1; 4017 } 4018 } 4019 return flush_cnt; 4020 } 4021 4022 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4023 struct qeth_hdr *hdr, unsigned int offset, 4024 unsigned int hd_len) 4025 { 4026 int index = queue->next_buf_to_fill; 4027 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 4028 4029 /* 4030 * check if buffer is empty to make sure that we do not 'overtake' 4031 * ourselves and try to fill a buffer that is already primed 4032 */ 4033 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4034 return -EBUSY; 4035 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 4036 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4037 qeth_flush_buffers(queue, index, 1); 4038 return 0; 4039 } 4040 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4041 4042 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4043 struct sk_buff *skb, struct qeth_hdr *hdr, 4044 unsigned int offset, unsigned int hd_len, 4045 int elements_needed) 4046 { 4047 struct qeth_qdio_out_buffer *buffer; 4048 int start_index; 4049 int flush_count = 0; 4050 int do_pack = 0; 4051 int tmp; 4052 int rc = 0; 4053 4054 /* spin until we get the queue ... */ 4055 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4056 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4057 start_index = queue->next_buf_to_fill; 4058 buffer = queue->bufs[queue->next_buf_to_fill]; 4059 /* 4060 * check if buffer is empty to make sure that we do not 'overtake' 4061 * ourselves and try to fill a buffer that is already primed 4062 */ 4063 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4064 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4065 return -EBUSY; 4066 } 4067 /* check if we need to switch packing state of this queue */ 4068 qeth_switch_to_packing_if_needed(queue); 4069 if (queue->do_pack) { 4070 do_pack = 1; 4071 /* does packet fit in current buffer? */ 4072 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4073 buffer->next_element_to_fill) < elements_needed) { 4074 /* ... no -> set state PRIMED */ 4075 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4076 flush_count++; 4077 queue->next_buf_to_fill = 4078 (queue->next_buf_to_fill + 1) % 4079 QDIO_MAX_BUFFERS_PER_Q; 4080 buffer = queue->bufs[queue->next_buf_to_fill]; 4081 /* we did a step forward, so check buffer state 4082 * again */ 4083 if (atomic_read(&buffer->state) != 4084 QETH_QDIO_BUF_EMPTY) { 4085 qeth_flush_buffers(queue, start_index, 4086 flush_count); 4087 atomic_set(&queue->state, 4088 QETH_OUT_Q_UNLOCKED); 4089 rc = -EBUSY; 4090 goto out; 4091 } 4092 } 4093 } 4094 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4095 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4096 QDIO_MAX_BUFFERS_PER_Q; 4097 flush_count += tmp; 4098 if (flush_count) 4099 qeth_flush_buffers(queue, start_index, flush_count); 4100 else if (!atomic_read(&queue->set_pci_flags_count)) 4101 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4102 /* 4103 * queue->state will go from LOCKED -> UNLOCKED or from 4104 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4105 * (switch packing state or flush buffer to get another pci flag out). 4106 * In that case we will enter this loop 4107 */ 4108 while (atomic_dec_return(&queue->state)) { 4109 start_index = queue->next_buf_to_fill; 4110 /* check if we can go back to non-packing state */ 4111 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4112 /* 4113 * check if we need to flush a packing buffer to get a pci 4114 * flag out on the queue 4115 */ 4116 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4117 tmp = qeth_prep_flush_pack_buffer(queue); 4118 if (tmp) { 4119 qeth_flush_buffers(queue, start_index, tmp); 4120 flush_count += tmp; 4121 } 4122 } 4123 out: 4124 /* at this point the queue is UNLOCKED again */ 4125 if (queue->card->options.performance_stats && do_pack) 4126 queue->card->perf_stats.bufs_sent_pack += flush_count; 4127 4128 return rc; 4129 } 4130 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4131 4132 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4133 struct qeth_reply *reply, unsigned long data) 4134 { 4135 struct qeth_ipa_cmd *cmd; 4136 struct qeth_ipacmd_setadpparms *setparms; 4137 4138 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4139 4140 cmd = (struct qeth_ipa_cmd *) data; 4141 setparms = &(cmd->data.setadapterparms); 4142 4143 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4144 if (cmd->hdr.return_code) { 4145 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4146 setparms->data.mode = SET_PROMISC_MODE_OFF; 4147 } 4148 card->info.promisc_mode = setparms->data.mode; 4149 return 0; 4150 } 4151 4152 void qeth_setadp_promisc_mode(struct qeth_card *card) 4153 { 4154 enum qeth_ipa_promisc_modes mode; 4155 struct net_device *dev = card->dev; 4156 struct qeth_cmd_buffer *iob; 4157 struct qeth_ipa_cmd *cmd; 4158 4159 QETH_CARD_TEXT(card, 4, "setprom"); 4160 4161 if (((dev->flags & IFF_PROMISC) && 4162 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4163 (!(dev->flags & IFF_PROMISC) && 4164 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4165 return; 4166 mode = SET_PROMISC_MODE_OFF; 4167 if (dev->flags & IFF_PROMISC) 4168 mode = SET_PROMISC_MODE_ON; 4169 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4170 4171 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4172 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4173 if (!iob) 4174 return; 4175 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4176 cmd->data.setadapterparms.data.mode = mode; 4177 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4178 } 4179 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4180 4181 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4182 { 4183 struct qeth_card *card; 4184 char dbf_text[15]; 4185 4186 card = dev->ml_priv; 4187 4188 QETH_CARD_TEXT(card, 4, "chgmtu"); 4189 sprintf(dbf_text, "%8x", new_mtu); 4190 QETH_CARD_TEXT(card, 4, dbf_text); 4191 4192 if (!qeth_mtu_is_valid(card, new_mtu)) 4193 return -EINVAL; 4194 dev->mtu = new_mtu; 4195 return 0; 4196 } 4197 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4198 4199 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4200 { 4201 struct qeth_card *card; 4202 4203 card = dev->ml_priv; 4204 4205 QETH_CARD_TEXT(card, 5, "getstat"); 4206 4207 return &card->stats; 4208 } 4209 EXPORT_SYMBOL_GPL(qeth_get_stats); 4210 4211 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4212 struct qeth_reply *reply, unsigned long data) 4213 { 4214 struct qeth_ipa_cmd *cmd; 4215 4216 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4217 4218 cmd = (struct qeth_ipa_cmd *) data; 4219 if (!card->options.layer2 || 4220 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4221 memcpy(card->dev->dev_addr, 4222 &cmd->data.setadapterparms.data.change_addr.addr, 4223 OSA_ADDR_LEN); 4224 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4225 } 4226 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4227 return 0; 4228 } 4229 4230 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4231 { 4232 int rc; 4233 struct qeth_cmd_buffer *iob; 4234 struct qeth_ipa_cmd *cmd; 4235 4236 QETH_CARD_TEXT(card, 4, "chgmac"); 4237 4238 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4239 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4240 sizeof(struct qeth_change_addr)); 4241 if (!iob) 4242 return -ENOMEM; 4243 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4244 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4245 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; 4246 memcpy(&cmd->data.setadapterparms.data.change_addr.addr, 4247 card->dev->dev_addr, OSA_ADDR_LEN); 4248 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4249 NULL); 4250 return rc; 4251 } 4252 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4253 4254 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4255 struct qeth_reply *reply, unsigned long data) 4256 { 4257 struct qeth_ipa_cmd *cmd; 4258 struct qeth_set_access_ctrl *access_ctrl_req; 4259 int fallback = *(int *)reply->param; 4260 4261 QETH_CARD_TEXT(card, 4, "setaccb"); 4262 4263 cmd = (struct qeth_ipa_cmd *) data; 4264 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4265 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4266 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4267 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4268 cmd->data.setadapterparms.hdr.return_code); 4269 if (cmd->data.setadapterparms.hdr.return_code != 4270 SET_ACCESS_CTRL_RC_SUCCESS) 4271 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4272 card->gdev->dev.kobj.name, 4273 access_ctrl_req->subcmd_code, 4274 cmd->data.setadapterparms.hdr.return_code); 4275 switch (cmd->data.setadapterparms.hdr.return_code) { 4276 case SET_ACCESS_CTRL_RC_SUCCESS: 4277 if (card->options.isolation == ISOLATION_MODE_NONE) { 4278 dev_info(&card->gdev->dev, 4279 "QDIO data connection isolation is deactivated\n"); 4280 } else { 4281 dev_info(&card->gdev->dev, 4282 "QDIO data connection isolation is activated\n"); 4283 } 4284 break; 4285 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4286 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4287 "deactivated\n", dev_name(&card->gdev->dev)); 4288 if (fallback) 4289 card->options.isolation = card->options.prev_isolation; 4290 break; 4291 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4292 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4293 " activated\n", dev_name(&card->gdev->dev)); 4294 if (fallback) 4295 card->options.isolation = card->options.prev_isolation; 4296 break; 4297 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4298 dev_err(&card->gdev->dev, "Adapter does not " 4299 "support QDIO data connection isolation\n"); 4300 break; 4301 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4302 dev_err(&card->gdev->dev, 4303 "Adapter is dedicated. " 4304 "QDIO data connection isolation not supported\n"); 4305 if (fallback) 4306 card->options.isolation = card->options.prev_isolation; 4307 break; 4308 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4309 dev_err(&card->gdev->dev, 4310 "TSO does not permit QDIO data connection isolation\n"); 4311 if (fallback) 4312 card->options.isolation = card->options.prev_isolation; 4313 break; 4314 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4315 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4316 "support reflective relay mode\n"); 4317 if (fallback) 4318 card->options.isolation = card->options.prev_isolation; 4319 break; 4320 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4321 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4322 "enabled at the adjacent switch port"); 4323 if (fallback) 4324 card->options.isolation = card->options.prev_isolation; 4325 break; 4326 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4327 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4328 "at the adjacent switch failed\n"); 4329 break; 4330 default: 4331 /* this should never happen */ 4332 if (fallback) 4333 card->options.isolation = card->options.prev_isolation; 4334 break; 4335 } 4336 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4337 return 0; 4338 } 4339 4340 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4341 enum qeth_ipa_isolation_modes isolation, int fallback) 4342 { 4343 int rc; 4344 struct qeth_cmd_buffer *iob; 4345 struct qeth_ipa_cmd *cmd; 4346 struct qeth_set_access_ctrl *access_ctrl_req; 4347 4348 QETH_CARD_TEXT(card, 4, "setacctl"); 4349 4350 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4351 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4352 4353 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4354 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4355 sizeof(struct qeth_set_access_ctrl)); 4356 if (!iob) 4357 return -ENOMEM; 4358 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4359 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4360 access_ctrl_req->subcmd_code = isolation; 4361 4362 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4363 &fallback); 4364 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4365 return rc; 4366 } 4367 4368 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4369 { 4370 int rc = 0; 4371 4372 QETH_CARD_TEXT(card, 4, "setactlo"); 4373 4374 if ((card->info.type == QETH_CARD_TYPE_OSD || 4375 card->info.type == QETH_CARD_TYPE_OSX) && 4376 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4377 rc = qeth_setadpparms_set_access_ctrl(card, 4378 card->options.isolation, fallback); 4379 if (rc) { 4380 QETH_DBF_MESSAGE(3, 4381 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4382 card->gdev->dev.kobj.name, 4383 rc); 4384 rc = -EOPNOTSUPP; 4385 } 4386 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4387 card->options.isolation = ISOLATION_MODE_NONE; 4388 4389 dev_err(&card->gdev->dev, "Adapter does not " 4390 "support QDIO data connection isolation\n"); 4391 rc = -EOPNOTSUPP; 4392 } 4393 return rc; 4394 } 4395 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4396 4397 void qeth_tx_timeout(struct net_device *dev) 4398 { 4399 struct qeth_card *card; 4400 4401 card = dev->ml_priv; 4402 QETH_CARD_TEXT(card, 4, "txtimeo"); 4403 card->stats.tx_errors++; 4404 qeth_schedule_recovery(card); 4405 } 4406 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4407 4408 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4409 { 4410 struct qeth_card *card = dev->ml_priv; 4411 int rc = 0; 4412 4413 switch (regnum) { 4414 case MII_BMCR: /* Basic mode control register */ 4415 rc = BMCR_FULLDPLX; 4416 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4417 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4418 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4419 rc |= BMCR_SPEED100; 4420 break; 4421 case MII_BMSR: /* Basic mode status register */ 4422 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4423 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4424 BMSR_100BASE4; 4425 break; 4426 case MII_PHYSID1: /* PHYS ID 1 */ 4427 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4428 dev->dev_addr[2]; 4429 rc = (rc >> 5) & 0xFFFF; 4430 break; 4431 case MII_PHYSID2: /* PHYS ID 2 */ 4432 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4433 break; 4434 case MII_ADVERTISE: /* Advertisement control reg */ 4435 rc = ADVERTISE_ALL; 4436 break; 4437 case MII_LPA: /* Link partner ability reg */ 4438 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4439 LPA_100BASE4 | LPA_LPACK; 4440 break; 4441 case MII_EXPANSION: /* Expansion register */ 4442 break; 4443 case MII_DCOUNTER: /* disconnect counter */ 4444 break; 4445 case MII_FCSCOUNTER: /* false carrier counter */ 4446 break; 4447 case MII_NWAYTEST: /* N-way auto-neg test register */ 4448 break; 4449 case MII_RERRCOUNTER: /* rx error counter */ 4450 rc = card->stats.rx_errors; 4451 break; 4452 case MII_SREVISION: /* silicon revision */ 4453 break; 4454 case MII_RESV1: /* reserved 1 */ 4455 break; 4456 case MII_LBRERROR: /* loopback, rx, bypass error */ 4457 break; 4458 case MII_PHYADDR: /* physical address */ 4459 break; 4460 case MII_RESV2: /* reserved 2 */ 4461 break; 4462 case MII_TPISTATUS: /* TPI status for 10mbps */ 4463 break; 4464 case MII_NCONFIG: /* network interface config */ 4465 break; 4466 default: 4467 break; 4468 } 4469 return rc; 4470 } 4471 4472 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4473 struct qeth_cmd_buffer *iob, int len, 4474 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4475 unsigned long), 4476 void *reply_param) 4477 { 4478 u16 s1, s2; 4479 4480 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4481 4482 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4483 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4484 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4485 /* adjust PDU length fields in IPA_PDU_HEADER */ 4486 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4487 s2 = (u32) len; 4488 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4489 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4490 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4491 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4492 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4493 reply_cb, reply_param); 4494 } 4495 4496 static int qeth_snmp_command_cb(struct qeth_card *card, 4497 struct qeth_reply *reply, unsigned long sdata) 4498 { 4499 struct qeth_ipa_cmd *cmd; 4500 struct qeth_arp_query_info *qinfo; 4501 struct qeth_snmp_cmd *snmp; 4502 unsigned char *data; 4503 __u16 data_len; 4504 4505 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4506 4507 cmd = (struct qeth_ipa_cmd *) sdata; 4508 data = (unsigned char *)((char *)cmd - reply->offset); 4509 qinfo = (struct qeth_arp_query_info *) reply->param; 4510 snmp = &cmd->data.setadapterparms.data.snmp; 4511 4512 if (cmd->hdr.return_code) { 4513 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4514 return 0; 4515 } 4516 if (cmd->data.setadapterparms.hdr.return_code) { 4517 cmd->hdr.return_code = 4518 cmd->data.setadapterparms.hdr.return_code; 4519 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4520 return 0; 4521 } 4522 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4523 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4524 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4525 else 4526 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4527 4528 /* check if there is enough room in userspace */ 4529 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4530 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4531 cmd->hdr.return_code = IPA_RC_ENOMEM; 4532 return 0; 4533 } 4534 QETH_CARD_TEXT_(card, 4, "snore%i", 4535 cmd->data.setadapterparms.hdr.used_total); 4536 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4537 cmd->data.setadapterparms.hdr.seq_no); 4538 /*copy entries to user buffer*/ 4539 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4540 memcpy(qinfo->udata + qinfo->udata_offset, 4541 (char *)snmp, 4542 data_len + offsetof(struct qeth_snmp_cmd, data)); 4543 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4544 } else { 4545 memcpy(qinfo->udata + qinfo->udata_offset, 4546 (char *)&snmp->request, data_len); 4547 } 4548 qinfo->udata_offset += data_len; 4549 /* check if all replies received ... */ 4550 QETH_CARD_TEXT_(card, 4, "srtot%i", 4551 cmd->data.setadapterparms.hdr.used_total); 4552 QETH_CARD_TEXT_(card, 4, "srseq%i", 4553 cmd->data.setadapterparms.hdr.seq_no); 4554 if (cmd->data.setadapterparms.hdr.seq_no < 4555 cmd->data.setadapterparms.hdr.used_total) 4556 return 1; 4557 return 0; 4558 } 4559 4560 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4561 { 4562 struct qeth_cmd_buffer *iob; 4563 struct qeth_ipa_cmd *cmd; 4564 struct qeth_snmp_ureq *ureq; 4565 unsigned int req_len; 4566 struct qeth_arp_query_info qinfo = {0, }; 4567 int rc = 0; 4568 4569 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4570 4571 if (card->info.guestlan) 4572 return -EOPNOTSUPP; 4573 4574 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4575 (!card->options.layer2)) { 4576 return -EOPNOTSUPP; 4577 } 4578 /* skip 4 bytes (data_len struct member) to get req_len */ 4579 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4580 return -EFAULT; 4581 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4582 sizeof(struct qeth_ipacmd_hdr) - 4583 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4584 return -EINVAL; 4585 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4586 if (IS_ERR(ureq)) { 4587 QETH_CARD_TEXT(card, 2, "snmpnome"); 4588 return PTR_ERR(ureq); 4589 } 4590 qinfo.udata_len = ureq->hdr.data_len; 4591 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4592 if (!qinfo.udata) { 4593 kfree(ureq); 4594 return -ENOMEM; 4595 } 4596 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4597 4598 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4599 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4600 if (!iob) { 4601 rc = -ENOMEM; 4602 goto out; 4603 } 4604 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4605 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4606 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4607 qeth_snmp_command_cb, (void *)&qinfo); 4608 if (rc) 4609 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4610 QETH_CARD_IFNAME(card), rc); 4611 else { 4612 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4613 rc = -EFAULT; 4614 } 4615 out: 4616 kfree(ureq); 4617 kfree(qinfo.udata); 4618 return rc; 4619 } 4620 4621 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4622 struct qeth_reply *reply, unsigned long data) 4623 { 4624 struct qeth_ipa_cmd *cmd; 4625 struct qeth_qoat_priv *priv; 4626 char *resdata; 4627 int resdatalen; 4628 4629 QETH_CARD_TEXT(card, 3, "qoatcb"); 4630 4631 cmd = (struct qeth_ipa_cmd *)data; 4632 priv = (struct qeth_qoat_priv *)reply->param; 4633 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4634 resdata = (char *)data + 28; 4635 4636 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4637 cmd->hdr.return_code = IPA_RC_FFFF; 4638 return 0; 4639 } 4640 4641 memcpy((priv->buffer + priv->response_len), resdata, 4642 resdatalen); 4643 priv->response_len += resdatalen; 4644 4645 if (cmd->data.setadapterparms.hdr.seq_no < 4646 cmd->data.setadapterparms.hdr.used_total) 4647 return 1; 4648 return 0; 4649 } 4650 4651 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4652 { 4653 int rc = 0; 4654 struct qeth_cmd_buffer *iob; 4655 struct qeth_ipa_cmd *cmd; 4656 struct qeth_query_oat *oat_req; 4657 struct qeth_query_oat_data oat_data; 4658 struct qeth_qoat_priv priv; 4659 void __user *tmp; 4660 4661 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4662 4663 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4664 rc = -EOPNOTSUPP; 4665 goto out; 4666 } 4667 4668 if (copy_from_user(&oat_data, udata, 4669 sizeof(struct qeth_query_oat_data))) { 4670 rc = -EFAULT; 4671 goto out; 4672 } 4673 4674 priv.buffer_len = oat_data.buffer_len; 4675 priv.response_len = 0; 4676 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4677 if (!priv.buffer) { 4678 rc = -ENOMEM; 4679 goto out; 4680 } 4681 4682 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4683 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4684 sizeof(struct qeth_query_oat)); 4685 if (!iob) { 4686 rc = -ENOMEM; 4687 goto out_free; 4688 } 4689 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4690 oat_req = &cmd->data.setadapterparms.data.query_oat; 4691 oat_req->subcmd_code = oat_data.command; 4692 4693 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4694 &priv); 4695 if (!rc) { 4696 if (is_compat_task()) 4697 tmp = compat_ptr(oat_data.ptr); 4698 else 4699 tmp = (void __user *)(unsigned long)oat_data.ptr; 4700 4701 if (copy_to_user(tmp, priv.buffer, 4702 priv.response_len)) { 4703 rc = -EFAULT; 4704 goto out_free; 4705 } 4706 4707 oat_data.response_len = priv.response_len; 4708 4709 if (copy_to_user(udata, &oat_data, 4710 sizeof(struct qeth_query_oat_data))) 4711 rc = -EFAULT; 4712 } else 4713 if (rc == IPA_RC_FFFF) 4714 rc = -EFAULT; 4715 4716 out_free: 4717 kfree(priv.buffer); 4718 out: 4719 return rc; 4720 } 4721 4722 static int qeth_query_card_info_cb(struct qeth_card *card, 4723 struct qeth_reply *reply, unsigned long data) 4724 { 4725 struct qeth_ipa_cmd *cmd; 4726 struct qeth_query_card_info *card_info; 4727 struct carrier_info *carrier_info; 4728 4729 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4730 carrier_info = (struct carrier_info *)reply->param; 4731 cmd = (struct qeth_ipa_cmd *)data; 4732 card_info = &cmd->data.setadapterparms.data.card_info; 4733 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4734 carrier_info->card_type = card_info->card_type; 4735 carrier_info->port_mode = card_info->port_mode; 4736 carrier_info->port_speed = card_info->port_speed; 4737 } 4738 4739 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4740 return 0; 4741 } 4742 4743 static int qeth_query_card_info(struct qeth_card *card, 4744 struct carrier_info *carrier_info) 4745 { 4746 struct qeth_cmd_buffer *iob; 4747 4748 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4749 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4750 return -EOPNOTSUPP; 4751 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4752 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4753 if (!iob) 4754 return -ENOMEM; 4755 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4756 (void *)carrier_info); 4757 } 4758 4759 /** 4760 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4761 * @card: pointer to a qeth_card 4762 * 4763 * Returns 4764 * 0, if a MAC address has been set for the card's netdevice 4765 * a return code, for various error conditions 4766 */ 4767 int qeth_vm_request_mac(struct qeth_card *card) 4768 { 4769 struct diag26c_mac_resp *response; 4770 struct diag26c_mac_req *request; 4771 struct ccw_dev_id id; 4772 int rc; 4773 4774 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4775 4776 if (!card->dev) 4777 return -ENODEV; 4778 4779 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4780 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4781 if (!request || !response) { 4782 rc = -ENOMEM; 4783 goto out; 4784 } 4785 4786 ccw_device_get_id(CARD_DDEV(card), &id); 4787 request->resp_buf_len = sizeof(*response); 4788 request->resp_version = DIAG26C_VERSION2; 4789 request->op_code = DIAG26C_GET_MAC; 4790 request->devno = id.devno; 4791 4792 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4793 if (rc) 4794 goto out; 4795 4796 if (request->resp_buf_len < sizeof(*response) || 4797 response->version != request->resp_version) { 4798 rc = -EIO; 4799 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4800 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4801 sizeof(request->resp_buf_len)); 4802 } else if (!is_valid_ether_addr(response->mac)) { 4803 rc = -EINVAL; 4804 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4805 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4806 } else { 4807 ether_addr_copy(card->dev->dev_addr, response->mac); 4808 } 4809 4810 out: 4811 kfree(response); 4812 kfree(request); 4813 return rc; 4814 } 4815 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4816 4817 static int qeth_get_qdio_q_format(struct qeth_card *card) 4818 { 4819 if (card->info.type == QETH_CARD_TYPE_IQD) 4820 return QDIO_IQDIO_QFMT; 4821 else 4822 return QDIO_QETH_QFMT; 4823 } 4824 4825 static void qeth_determine_capabilities(struct qeth_card *card) 4826 { 4827 int rc; 4828 int length; 4829 char *prcd; 4830 struct ccw_device *ddev; 4831 int ddev_offline = 0; 4832 4833 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4834 ddev = CARD_DDEV(card); 4835 if (!ddev->online) { 4836 ddev_offline = 1; 4837 rc = ccw_device_set_online(ddev); 4838 if (rc) { 4839 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4840 goto out; 4841 } 4842 } 4843 4844 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4845 if (rc) { 4846 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4847 dev_name(&card->gdev->dev), rc); 4848 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4849 goto out_offline; 4850 } 4851 qeth_configure_unitaddr(card, prcd); 4852 if (ddev_offline) 4853 qeth_configure_blkt_default(card, prcd); 4854 kfree(prcd); 4855 4856 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4857 if (rc) 4858 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4859 4860 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4861 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4862 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4863 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4864 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4865 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4866 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4867 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4868 dev_info(&card->gdev->dev, 4869 "Completion Queueing supported\n"); 4870 } else { 4871 card->options.cq = QETH_CQ_NOTAVAILABLE; 4872 } 4873 4874 4875 out_offline: 4876 if (ddev_offline == 1) 4877 ccw_device_set_offline(ddev); 4878 out: 4879 return; 4880 } 4881 4882 static void qeth_qdio_establish_cq(struct qeth_card *card, 4883 struct qdio_buffer **in_sbal_ptrs, 4884 void (**queue_start_poll) 4885 (struct ccw_device *, int, 4886 unsigned long)) 4887 { 4888 int i; 4889 4890 if (card->options.cq == QETH_CQ_ENABLED) { 4891 int offset = QDIO_MAX_BUFFERS_PER_Q * 4892 (card->qdio.no_in_queues - 1); 4893 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4894 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4895 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4896 } 4897 4898 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4899 } 4900 } 4901 4902 static int qeth_qdio_establish(struct qeth_card *card) 4903 { 4904 struct qdio_initialize init_data; 4905 char *qib_param_field; 4906 struct qdio_buffer **in_sbal_ptrs; 4907 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4908 struct qdio_buffer **out_sbal_ptrs; 4909 int i, j, k; 4910 int rc = 0; 4911 4912 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4913 4914 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4915 GFP_KERNEL); 4916 if (!qib_param_field) { 4917 rc = -ENOMEM; 4918 goto out_free_nothing; 4919 } 4920 4921 qeth_create_qib_param_field(card, qib_param_field); 4922 qeth_create_qib_param_field_blkt(card, qib_param_field); 4923 4924 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4925 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4926 GFP_KERNEL); 4927 if (!in_sbal_ptrs) { 4928 rc = -ENOMEM; 4929 goto out_free_qib_param; 4930 } 4931 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4932 in_sbal_ptrs[i] = (struct qdio_buffer *) 4933 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4934 } 4935 4936 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4937 GFP_KERNEL); 4938 if (!queue_start_poll) { 4939 rc = -ENOMEM; 4940 goto out_free_in_sbals; 4941 } 4942 for (i = 0; i < card->qdio.no_in_queues; ++i) 4943 queue_start_poll[i] = card->discipline->start_poll; 4944 4945 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4946 4947 out_sbal_ptrs = 4948 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 4949 sizeof(void *), GFP_KERNEL); 4950 if (!out_sbal_ptrs) { 4951 rc = -ENOMEM; 4952 goto out_free_queue_start_poll; 4953 } 4954 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4955 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4956 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4957 card->qdio.out_qs[i]->bufs[j]->buffer); 4958 } 4959 4960 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4961 init_data.cdev = CARD_DDEV(card); 4962 init_data.q_format = qeth_get_qdio_q_format(card); 4963 init_data.qib_param_field_format = 0; 4964 init_data.qib_param_field = qib_param_field; 4965 init_data.no_input_qs = card->qdio.no_in_queues; 4966 init_data.no_output_qs = card->qdio.no_out_queues; 4967 init_data.input_handler = card->discipline->input_handler; 4968 init_data.output_handler = card->discipline->output_handler; 4969 init_data.queue_start_poll_array = queue_start_poll; 4970 init_data.int_parm = (unsigned long) card; 4971 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4972 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4973 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4974 init_data.scan_threshold = 4975 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 4976 4977 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4978 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4979 rc = qdio_allocate(&init_data); 4980 if (rc) { 4981 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4982 goto out; 4983 } 4984 rc = qdio_establish(&init_data); 4985 if (rc) { 4986 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4987 qdio_free(CARD_DDEV(card)); 4988 } 4989 } 4990 4991 switch (card->options.cq) { 4992 case QETH_CQ_ENABLED: 4993 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4994 break; 4995 case QETH_CQ_DISABLED: 4996 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4997 break; 4998 default: 4999 break; 5000 } 5001 out: 5002 kfree(out_sbal_ptrs); 5003 out_free_queue_start_poll: 5004 kfree(queue_start_poll); 5005 out_free_in_sbals: 5006 kfree(in_sbal_ptrs); 5007 out_free_qib_param: 5008 kfree(qib_param_field); 5009 out_free_nothing: 5010 return rc; 5011 } 5012 5013 static void qeth_core_free_card(struct qeth_card *card) 5014 { 5015 5016 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5017 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5018 qeth_clean_channel(&card->read); 5019 qeth_clean_channel(&card->write); 5020 if (card->dev) 5021 free_netdev(card->dev); 5022 qeth_free_qdio_buffers(card); 5023 unregister_service_level(&card->qeth_service_level); 5024 kfree(card); 5025 } 5026 5027 void qeth_trace_features(struct qeth_card *card) 5028 { 5029 QETH_CARD_TEXT(card, 2, "features"); 5030 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5031 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5032 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5033 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5034 sizeof(card->info.diagass_support)); 5035 } 5036 EXPORT_SYMBOL_GPL(qeth_trace_features); 5037 5038 static struct ccw_device_id qeth_ids[] = { 5039 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5040 .driver_info = QETH_CARD_TYPE_OSD}, 5041 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5042 .driver_info = QETH_CARD_TYPE_IQD}, 5043 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5044 .driver_info = QETH_CARD_TYPE_OSN}, 5045 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5046 .driver_info = QETH_CARD_TYPE_OSM}, 5047 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5048 .driver_info = QETH_CARD_TYPE_OSX}, 5049 {}, 5050 }; 5051 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5052 5053 static struct ccw_driver qeth_ccw_driver = { 5054 .driver = { 5055 .owner = THIS_MODULE, 5056 .name = "qeth", 5057 }, 5058 .ids = qeth_ids, 5059 .probe = ccwgroup_probe_ccwdev, 5060 .remove = ccwgroup_remove_ccwdev, 5061 }; 5062 5063 int qeth_core_hardsetup_card(struct qeth_card *card) 5064 { 5065 int retries = 3; 5066 int rc; 5067 5068 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5069 atomic_set(&card->force_alloc_skb, 0); 5070 qeth_update_from_chp_desc(card); 5071 retry: 5072 if (retries < 3) 5073 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5074 dev_name(&card->gdev->dev)); 5075 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5076 ccw_device_set_offline(CARD_DDEV(card)); 5077 ccw_device_set_offline(CARD_WDEV(card)); 5078 ccw_device_set_offline(CARD_RDEV(card)); 5079 qdio_free(CARD_DDEV(card)); 5080 rc = ccw_device_set_online(CARD_RDEV(card)); 5081 if (rc) 5082 goto retriable; 5083 rc = ccw_device_set_online(CARD_WDEV(card)); 5084 if (rc) 5085 goto retriable; 5086 rc = ccw_device_set_online(CARD_DDEV(card)); 5087 if (rc) 5088 goto retriable; 5089 retriable: 5090 if (rc == -ERESTARTSYS) { 5091 QETH_DBF_TEXT(SETUP, 2, "break1"); 5092 return rc; 5093 } else if (rc) { 5094 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5095 if (--retries < 0) 5096 goto out; 5097 else 5098 goto retry; 5099 } 5100 qeth_determine_capabilities(card); 5101 qeth_init_tokens(card); 5102 qeth_init_func_level(card); 5103 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5104 if (rc == -ERESTARTSYS) { 5105 QETH_DBF_TEXT(SETUP, 2, "break2"); 5106 return rc; 5107 } else if (rc) { 5108 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5109 if (--retries < 0) 5110 goto out; 5111 else 5112 goto retry; 5113 } 5114 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5115 if (rc == -ERESTARTSYS) { 5116 QETH_DBF_TEXT(SETUP, 2, "break3"); 5117 return rc; 5118 } else if (rc) { 5119 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5120 if (--retries < 0) 5121 goto out; 5122 else 5123 goto retry; 5124 } 5125 card->read_or_write_problem = 0; 5126 rc = qeth_mpc_initialize(card); 5127 if (rc) { 5128 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5129 goto out; 5130 } 5131 5132 rc = qeth_send_startlan(card); 5133 if (rc) { 5134 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5135 if (rc == IPA_RC_LAN_OFFLINE) { 5136 dev_warn(&card->gdev->dev, 5137 "The LAN is offline\n"); 5138 card->lan_online = 0; 5139 } else { 5140 rc = -ENODEV; 5141 goto out; 5142 } 5143 } else 5144 card->lan_online = 1; 5145 5146 card->options.ipa4.supported_funcs = 0; 5147 card->options.ipa6.supported_funcs = 0; 5148 card->options.adp.supported_funcs = 0; 5149 card->options.sbp.supported_funcs = 0; 5150 card->info.diagass_support = 0; 5151 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5152 if (rc == -ENOMEM) 5153 goto out; 5154 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5155 rc = qeth_query_setadapterparms(card); 5156 if (rc < 0) { 5157 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5158 goto out; 5159 } 5160 } 5161 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5162 rc = qeth_query_setdiagass(card); 5163 if (rc < 0) { 5164 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5165 goto out; 5166 } 5167 } 5168 return 0; 5169 out: 5170 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5171 "an error on the device\n"); 5172 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5173 dev_name(&card->gdev->dev), rc); 5174 return rc; 5175 } 5176 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5177 5178 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5179 struct sk_buff *skb, int offset, int data_len) 5180 { 5181 struct page *page = virt_to_page(element->addr); 5182 unsigned int next_frag; 5183 5184 /* first fill the linear space */ 5185 if (!skb->len) { 5186 unsigned int linear = min(data_len, skb_tailroom(skb)); 5187 5188 skb_put_data(skb, element->addr + offset, linear); 5189 data_len -= linear; 5190 if (!data_len) 5191 return; 5192 offset += linear; 5193 /* fall through to add page frag for remaining data */ 5194 } 5195 5196 next_frag = skb_shinfo(skb)->nr_frags; 5197 get_page(page); 5198 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5199 } 5200 5201 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5202 { 5203 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5204 } 5205 5206 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5207 struct qeth_qdio_buffer *qethbuffer, 5208 struct qdio_buffer_element **__element, int *__offset, 5209 struct qeth_hdr **hdr) 5210 { 5211 struct qdio_buffer_element *element = *__element; 5212 struct qdio_buffer *buffer = qethbuffer->buffer; 5213 int offset = *__offset; 5214 struct sk_buff *skb; 5215 int skb_len = 0; 5216 void *data_ptr; 5217 int data_len; 5218 int headroom = 0; 5219 int use_rx_sg = 0; 5220 5221 /* qeth_hdr must not cross element boundaries */ 5222 while (element->length < offset + sizeof(struct qeth_hdr)) { 5223 if (qeth_is_last_sbale(element)) 5224 return NULL; 5225 element++; 5226 offset = 0; 5227 } 5228 *hdr = element->addr + offset; 5229 5230 offset += sizeof(struct qeth_hdr); 5231 switch ((*hdr)->hdr.l2.id) { 5232 case QETH_HEADER_TYPE_LAYER2: 5233 skb_len = (*hdr)->hdr.l2.pkt_length; 5234 break; 5235 case QETH_HEADER_TYPE_LAYER3: 5236 skb_len = (*hdr)->hdr.l3.length; 5237 headroom = ETH_HLEN; 5238 break; 5239 case QETH_HEADER_TYPE_OSN: 5240 skb_len = (*hdr)->hdr.osn.pdu_length; 5241 headroom = sizeof(struct qeth_hdr); 5242 break; 5243 default: 5244 break; 5245 } 5246 5247 if (!skb_len) 5248 return NULL; 5249 5250 if (((skb_len >= card->options.rx_sg_cb) && 5251 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5252 (!atomic_read(&card->force_alloc_skb))) || 5253 (card->options.cq == QETH_CQ_ENABLED)) 5254 use_rx_sg = 1; 5255 5256 if (use_rx_sg && qethbuffer->rx_skb) { 5257 /* QETH_CQ_ENABLED only: */ 5258 skb = qethbuffer->rx_skb; 5259 qethbuffer->rx_skb = NULL; 5260 } else { 5261 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5262 5263 skb = dev_alloc_skb(linear + headroom); 5264 } 5265 if (!skb) 5266 goto no_mem; 5267 if (headroom) 5268 skb_reserve(skb, headroom); 5269 5270 data_ptr = element->addr + offset; 5271 while (skb_len) { 5272 data_len = min(skb_len, (int)(element->length - offset)); 5273 if (data_len) { 5274 if (use_rx_sg) 5275 qeth_create_skb_frag(element, skb, offset, 5276 data_len); 5277 else 5278 skb_put_data(skb, data_ptr, data_len); 5279 } 5280 skb_len -= data_len; 5281 if (skb_len) { 5282 if (qeth_is_last_sbale(element)) { 5283 QETH_CARD_TEXT(card, 4, "unexeob"); 5284 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5285 dev_kfree_skb_any(skb); 5286 card->stats.rx_errors++; 5287 return NULL; 5288 } 5289 element++; 5290 offset = 0; 5291 data_ptr = element->addr; 5292 } else { 5293 offset += data_len; 5294 } 5295 } 5296 *__element = element; 5297 *__offset = offset; 5298 if (use_rx_sg && card->options.performance_stats) { 5299 card->perf_stats.sg_skbs_rx++; 5300 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5301 } 5302 return skb; 5303 no_mem: 5304 if (net_ratelimit()) { 5305 QETH_CARD_TEXT(card, 2, "noskbmem"); 5306 } 5307 card->stats.rx_dropped++; 5308 return NULL; 5309 } 5310 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5311 5312 int qeth_poll(struct napi_struct *napi, int budget) 5313 { 5314 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5315 int work_done = 0; 5316 struct qeth_qdio_buffer *buffer; 5317 int done; 5318 int new_budget = budget; 5319 5320 if (card->options.performance_stats) { 5321 card->perf_stats.inbound_cnt++; 5322 card->perf_stats.inbound_start_time = qeth_get_micros(); 5323 } 5324 5325 while (1) { 5326 if (!card->rx.b_count) { 5327 card->rx.qdio_err = 0; 5328 card->rx.b_count = qdio_get_next_buffers( 5329 card->data.ccwdev, 0, &card->rx.b_index, 5330 &card->rx.qdio_err); 5331 if (card->rx.b_count <= 0) { 5332 card->rx.b_count = 0; 5333 break; 5334 } 5335 card->rx.b_element = 5336 &card->qdio.in_q->bufs[card->rx.b_index] 5337 .buffer->element[0]; 5338 card->rx.e_offset = 0; 5339 } 5340 5341 while (card->rx.b_count) { 5342 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5343 if (!(card->rx.qdio_err && 5344 qeth_check_qdio_errors(card, buffer->buffer, 5345 card->rx.qdio_err, "qinerr"))) 5346 work_done += 5347 card->discipline->process_rx_buffer( 5348 card, new_budget, &done); 5349 else 5350 done = 1; 5351 5352 if (done) { 5353 if (card->options.performance_stats) 5354 card->perf_stats.bufs_rec++; 5355 qeth_put_buffer_pool_entry(card, 5356 buffer->pool_entry); 5357 qeth_queue_input_buffer(card, card->rx.b_index); 5358 card->rx.b_count--; 5359 if (card->rx.b_count) { 5360 card->rx.b_index = 5361 (card->rx.b_index + 1) % 5362 QDIO_MAX_BUFFERS_PER_Q; 5363 card->rx.b_element = 5364 &card->qdio.in_q 5365 ->bufs[card->rx.b_index] 5366 .buffer->element[0]; 5367 card->rx.e_offset = 0; 5368 } 5369 } 5370 5371 if (work_done >= budget) 5372 goto out; 5373 else 5374 new_budget = budget - work_done; 5375 } 5376 } 5377 5378 napi_complete_done(napi, work_done); 5379 if (qdio_start_irq(card->data.ccwdev, 0)) 5380 napi_schedule(&card->napi); 5381 out: 5382 if (card->options.performance_stats) 5383 card->perf_stats.inbound_time += qeth_get_micros() - 5384 card->perf_stats.inbound_start_time; 5385 return work_done; 5386 } 5387 EXPORT_SYMBOL_GPL(qeth_poll); 5388 5389 int qeth_setassparms_cb(struct qeth_card *card, 5390 struct qeth_reply *reply, unsigned long data) 5391 { 5392 struct qeth_ipa_cmd *cmd; 5393 5394 QETH_CARD_TEXT(card, 4, "defadpcb"); 5395 5396 cmd = (struct qeth_ipa_cmd *) data; 5397 if (cmd->hdr.return_code == 0) { 5398 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5399 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5400 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5401 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5402 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5403 } 5404 return 0; 5405 } 5406 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5407 5408 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5409 enum qeth_ipa_funcs ipa_func, 5410 __u16 cmd_code, __u16 len, 5411 enum qeth_prot_versions prot) 5412 { 5413 struct qeth_cmd_buffer *iob; 5414 struct qeth_ipa_cmd *cmd; 5415 5416 QETH_CARD_TEXT(card, 4, "getasscm"); 5417 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5418 5419 if (iob) { 5420 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5421 cmd->data.setassparms.hdr.assist_no = ipa_func; 5422 cmd->data.setassparms.hdr.length = 8 + len; 5423 cmd->data.setassparms.hdr.command_code = cmd_code; 5424 cmd->data.setassparms.hdr.return_code = 0; 5425 cmd->data.setassparms.hdr.seq_no = 0; 5426 } 5427 5428 return iob; 5429 } 5430 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5431 5432 int qeth_send_setassparms(struct qeth_card *card, 5433 struct qeth_cmd_buffer *iob, __u16 len, long data, 5434 int (*reply_cb)(struct qeth_card *, 5435 struct qeth_reply *, unsigned long), 5436 void *reply_param) 5437 { 5438 int rc; 5439 struct qeth_ipa_cmd *cmd; 5440 5441 QETH_CARD_TEXT(card, 4, "sendassp"); 5442 5443 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5444 if (len <= sizeof(__u32)) 5445 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5446 else /* (len > sizeof(__u32)) */ 5447 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5448 5449 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5450 return rc; 5451 } 5452 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5453 5454 int qeth_send_simple_setassparms(struct qeth_card *card, 5455 enum qeth_ipa_funcs ipa_func, 5456 __u16 cmd_code, long data) 5457 { 5458 int rc; 5459 int length = 0; 5460 struct qeth_cmd_buffer *iob; 5461 5462 QETH_CARD_TEXT(card, 4, "simassp4"); 5463 if (data) 5464 length = sizeof(__u32); 5465 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5466 length, QETH_PROT_IPV4); 5467 if (!iob) 5468 return -ENOMEM; 5469 rc = qeth_send_setassparms(card, iob, length, data, 5470 qeth_setassparms_cb, NULL); 5471 return rc; 5472 } 5473 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5474 5475 static void qeth_unregister_dbf_views(void) 5476 { 5477 int x; 5478 for (x = 0; x < QETH_DBF_INFOS; x++) { 5479 debug_unregister(qeth_dbf[x].id); 5480 qeth_dbf[x].id = NULL; 5481 } 5482 } 5483 5484 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5485 { 5486 char dbf_txt_buf[32]; 5487 va_list args; 5488 5489 if (!debug_level_enabled(id, level)) 5490 return; 5491 va_start(args, fmt); 5492 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5493 va_end(args); 5494 debug_text_event(id, level, dbf_txt_buf); 5495 } 5496 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5497 5498 static int qeth_register_dbf_views(void) 5499 { 5500 int ret; 5501 int x; 5502 5503 for (x = 0; x < QETH_DBF_INFOS; x++) { 5504 /* register the areas */ 5505 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5506 qeth_dbf[x].pages, 5507 qeth_dbf[x].areas, 5508 qeth_dbf[x].len); 5509 if (qeth_dbf[x].id == NULL) { 5510 qeth_unregister_dbf_views(); 5511 return -ENOMEM; 5512 } 5513 5514 /* register a view */ 5515 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5516 if (ret) { 5517 qeth_unregister_dbf_views(); 5518 return ret; 5519 } 5520 5521 /* set a passing level */ 5522 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5523 } 5524 5525 return 0; 5526 } 5527 5528 int qeth_core_load_discipline(struct qeth_card *card, 5529 enum qeth_discipline_id discipline) 5530 { 5531 int rc = 0; 5532 5533 mutex_lock(&qeth_mod_mutex); 5534 switch (discipline) { 5535 case QETH_DISCIPLINE_LAYER3: 5536 card->discipline = try_then_request_module( 5537 symbol_get(qeth_l3_discipline), "qeth_l3"); 5538 break; 5539 case QETH_DISCIPLINE_LAYER2: 5540 card->discipline = try_then_request_module( 5541 symbol_get(qeth_l2_discipline), "qeth_l2"); 5542 break; 5543 default: 5544 break; 5545 } 5546 5547 if (!card->discipline) { 5548 dev_err(&card->gdev->dev, "There is no kernel module to " 5549 "support discipline %d\n", discipline); 5550 rc = -EINVAL; 5551 } 5552 mutex_unlock(&qeth_mod_mutex); 5553 return rc; 5554 } 5555 5556 void qeth_core_free_discipline(struct qeth_card *card) 5557 { 5558 if (card->options.layer2) 5559 symbol_put(qeth_l2_discipline); 5560 else 5561 symbol_put(qeth_l3_discipline); 5562 card->discipline = NULL; 5563 } 5564 5565 const struct device_type qeth_generic_devtype = { 5566 .name = "qeth_generic", 5567 .groups = qeth_generic_attr_groups, 5568 }; 5569 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5570 5571 static const struct device_type qeth_osn_devtype = { 5572 .name = "qeth_osn", 5573 .groups = qeth_osn_attr_groups, 5574 }; 5575 5576 #define DBF_NAME_LEN 20 5577 5578 struct qeth_dbf_entry { 5579 char dbf_name[DBF_NAME_LEN]; 5580 debug_info_t *dbf_info; 5581 struct list_head dbf_list; 5582 }; 5583 5584 static LIST_HEAD(qeth_dbf_list); 5585 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5586 5587 static debug_info_t *qeth_get_dbf_entry(char *name) 5588 { 5589 struct qeth_dbf_entry *entry; 5590 debug_info_t *rc = NULL; 5591 5592 mutex_lock(&qeth_dbf_list_mutex); 5593 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5594 if (strcmp(entry->dbf_name, name) == 0) { 5595 rc = entry->dbf_info; 5596 break; 5597 } 5598 } 5599 mutex_unlock(&qeth_dbf_list_mutex); 5600 return rc; 5601 } 5602 5603 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5604 { 5605 struct qeth_dbf_entry *new_entry; 5606 5607 card->debug = debug_register(name, 2, 1, 8); 5608 if (!card->debug) { 5609 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5610 goto err; 5611 } 5612 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5613 goto err_dbg; 5614 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5615 if (!new_entry) 5616 goto err_dbg; 5617 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5618 new_entry->dbf_info = card->debug; 5619 mutex_lock(&qeth_dbf_list_mutex); 5620 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5621 mutex_unlock(&qeth_dbf_list_mutex); 5622 5623 return 0; 5624 5625 err_dbg: 5626 debug_unregister(card->debug); 5627 err: 5628 return -ENOMEM; 5629 } 5630 5631 static void qeth_clear_dbf_list(void) 5632 { 5633 struct qeth_dbf_entry *entry, *tmp; 5634 5635 mutex_lock(&qeth_dbf_list_mutex); 5636 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5637 list_del(&entry->dbf_list); 5638 debug_unregister(entry->dbf_info); 5639 kfree(entry); 5640 } 5641 mutex_unlock(&qeth_dbf_list_mutex); 5642 } 5643 5644 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5645 { 5646 struct qeth_card *card; 5647 struct device *dev; 5648 int rc; 5649 enum qeth_discipline_id enforced_disc; 5650 unsigned long flags; 5651 char dbf_name[DBF_NAME_LEN]; 5652 5653 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5654 5655 dev = &gdev->dev; 5656 if (!get_device(dev)) 5657 return -ENODEV; 5658 5659 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5660 5661 card = qeth_alloc_card(); 5662 if (!card) { 5663 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5664 rc = -ENOMEM; 5665 goto err_dev; 5666 } 5667 5668 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5669 dev_name(&gdev->dev)); 5670 card->debug = qeth_get_dbf_entry(dbf_name); 5671 if (!card->debug) { 5672 rc = qeth_add_dbf_entry(card, dbf_name); 5673 if (rc) 5674 goto err_card; 5675 } 5676 5677 card->read.ccwdev = gdev->cdev[0]; 5678 card->write.ccwdev = gdev->cdev[1]; 5679 card->data.ccwdev = gdev->cdev[2]; 5680 dev_set_drvdata(&gdev->dev, card); 5681 card->gdev = gdev; 5682 gdev->cdev[0]->handler = qeth_irq; 5683 gdev->cdev[1]->handler = qeth_irq; 5684 gdev->cdev[2]->handler = qeth_irq; 5685 5686 qeth_determine_card_type(card); 5687 rc = qeth_setup_card(card); 5688 if (rc) { 5689 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5690 goto err_card; 5691 } 5692 5693 qeth_determine_capabilities(card); 5694 enforced_disc = qeth_enforce_discipline(card); 5695 switch (enforced_disc) { 5696 case QETH_DISCIPLINE_UNDETERMINED: 5697 gdev->dev.type = &qeth_generic_devtype; 5698 break; 5699 default: 5700 card->info.layer_enforced = true; 5701 rc = qeth_core_load_discipline(card, enforced_disc); 5702 if (rc) 5703 goto err_card; 5704 5705 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5706 ? card->discipline->devtype 5707 : &qeth_osn_devtype; 5708 rc = card->discipline->setup(card->gdev); 5709 if (rc) 5710 goto err_disc; 5711 break; 5712 } 5713 5714 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5715 list_add_tail(&card->list, &qeth_core_card_list.list); 5716 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5717 return 0; 5718 5719 err_disc: 5720 qeth_core_free_discipline(card); 5721 err_card: 5722 qeth_core_free_card(card); 5723 err_dev: 5724 put_device(dev); 5725 return rc; 5726 } 5727 5728 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5729 { 5730 unsigned long flags; 5731 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5732 5733 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5734 5735 if (card->discipline) { 5736 card->discipline->remove(gdev); 5737 qeth_core_free_discipline(card); 5738 } 5739 5740 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5741 list_del(&card->list); 5742 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5743 qeth_core_free_card(card); 5744 dev_set_drvdata(&gdev->dev, NULL); 5745 put_device(&gdev->dev); 5746 return; 5747 } 5748 5749 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5750 { 5751 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5752 int rc = 0; 5753 enum qeth_discipline_id def_discipline; 5754 5755 if (!card->discipline) { 5756 if (card->info.type == QETH_CARD_TYPE_IQD) 5757 def_discipline = QETH_DISCIPLINE_LAYER3; 5758 else 5759 def_discipline = QETH_DISCIPLINE_LAYER2; 5760 rc = qeth_core_load_discipline(card, def_discipline); 5761 if (rc) 5762 goto err; 5763 rc = card->discipline->setup(card->gdev); 5764 if (rc) { 5765 qeth_core_free_discipline(card); 5766 goto err; 5767 } 5768 } 5769 rc = card->discipline->set_online(gdev); 5770 err: 5771 return rc; 5772 } 5773 5774 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5775 { 5776 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5777 return card->discipline->set_offline(gdev); 5778 } 5779 5780 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5781 { 5782 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5783 qeth_set_allowed_threads(card, 0, 1); 5784 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5785 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5786 qeth_qdio_clear_card(card, 0); 5787 qeth_clear_qdio_buffers(card); 5788 qdio_free(CARD_DDEV(card)); 5789 } 5790 5791 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5792 { 5793 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5794 if (card->discipline && card->discipline->freeze) 5795 return card->discipline->freeze(gdev); 5796 return 0; 5797 } 5798 5799 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5800 { 5801 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5802 if (card->discipline && card->discipline->thaw) 5803 return card->discipline->thaw(gdev); 5804 return 0; 5805 } 5806 5807 static int qeth_core_restore(struct ccwgroup_device *gdev) 5808 { 5809 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5810 if (card->discipline && card->discipline->restore) 5811 return card->discipline->restore(gdev); 5812 return 0; 5813 } 5814 5815 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5816 .driver = { 5817 .owner = THIS_MODULE, 5818 .name = "qeth", 5819 }, 5820 .ccw_driver = &qeth_ccw_driver, 5821 .setup = qeth_core_probe_device, 5822 .remove = qeth_core_remove_device, 5823 .set_online = qeth_core_set_online, 5824 .set_offline = qeth_core_set_offline, 5825 .shutdown = qeth_core_shutdown, 5826 .prepare = NULL, 5827 .complete = NULL, 5828 .freeze = qeth_core_freeze, 5829 .thaw = qeth_core_thaw, 5830 .restore = qeth_core_restore, 5831 }; 5832 5833 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5834 size_t count) 5835 { 5836 int err; 5837 5838 err = ccwgroup_create_dev(qeth_core_root_dev, 5839 &qeth_core_ccwgroup_driver, 3, buf); 5840 5841 return err ? err : count; 5842 } 5843 static DRIVER_ATTR_WO(group); 5844 5845 static struct attribute *qeth_drv_attrs[] = { 5846 &driver_attr_group.attr, 5847 NULL, 5848 }; 5849 static struct attribute_group qeth_drv_attr_group = { 5850 .attrs = qeth_drv_attrs, 5851 }; 5852 static const struct attribute_group *qeth_drv_attr_groups[] = { 5853 &qeth_drv_attr_group, 5854 NULL, 5855 }; 5856 5857 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5858 { 5859 struct qeth_card *card = dev->ml_priv; 5860 struct mii_ioctl_data *mii_data; 5861 int rc = 0; 5862 5863 if (!card) 5864 return -ENODEV; 5865 5866 if (!qeth_card_hw_is_reachable(card)) 5867 return -ENODEV; 5868 5869 if (card->info.type == QETH_CARD_TYPE_OSN) 5870 return -EPERM; 5871 5872 switch (cmd) { 5873 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5874 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5875 break; 5876 case SIOC_QETH_GET_CARD_TYPE: 5877 if ((card->info.type == QETH_CARD_TYPE_OSD || 5878 card->info.type == QETH_CARD_TYPE_OSM || 5879 card->info.type == QETH_CARD_TYPE_OSX) && 5880 !card->info.guestlan) 5881 return 1; 5882 else 5883 return 0; 5884 case SIOCGMIIPHY: 5885 mii_data = if_mii(rq); 5886 mii_data->phy_id = 0; 5887 break; 5888 case SIOCGMIIREG: 5889 mii_data = if_mii(rq); 5890 if (mii_data->phy_id != 0) 5891 rc = -EINVAL; 5892 else 5893 mii_data->val_out = qeth_mdio_read(dev, 5894 mii_data->phy_id, mii_data->reg_num); 5895 break; 5896 case SIOC_QETH_QUERY_OAT: 5897 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5898 break; 5899 default: 5900 if (card->discipline->do_ioctl) 5901 rc = card->discipline->do_ioctl(dev, rq, cmd); 5902 else 5903 rc = -EOPNOTSUPP; 5904 } 5905 if (rc) 5906 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5907 return rc; 5908 } 5909 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5910 5911 static struct { 5912 const char str[ETH_GSTRING_LEN]; 5913 } qeth_ethtool_stats_keys[] = { 5914 /* 0 */{"rx skbs"}, 5915 {"rx buffers"}, 5916 {"tx skbs"}, 5917 {"tx buffers"}, 5918 {"tx skbs no packing"}, 5919 {"tx buffers no packing"}, 5920 {"tx skbs packing"}, 5921 {"tx buffers packing"}, 5922 {"tx sg skbs"}, 5923 {"tx sg frags"}, 5924 /* 10 */{"rx sg skbs"}, 5925 {"rx sg frags"}, 5926 {"rx sg page allocs"}, 5927 {"tx large kbytes"}, 5928 {"tx large count"}, 5929 {"tx pk state ch n->p"}, 5930 {"tx pk state ch p->n"}, 5931 {"tx pk watermark low"}, 5932 {"tx pk watermark high"}, 5933 {"queue 0 buffer usage"}, 5934 /* 20 */{"queue 1 buffer usage"}, 5935 {"queue 2 buffer usage"}, 5936 {"queue 3 buffer usage"}, 5937 {"rx poll time"}, 5938 {"rx poll count"}, 5939 {"rx do_QDIO time"}, 5940 {"rx do_QDIO count"}, 5941 {"tx handler time"}, 5942 {"tx handler count"}, 5943 {"tx time"}, 5944 /* 30 */{"tx count"}, 5945 {"tx do_QDIO time"}, 5946 {"tx do_QDIO count"}, 5947 {"tx csum"}, 5948 {"tx lin"}, 5949 {"tx linfail"}, 5950 {"cq handler count"}, 5951 {"cq handler time"} 5952 }; 5953 5954 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 5955 { 5956 switch (stringset) { 5957 case ETH_SS_STATS: 5958 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 5959 default: 5960 return -EINVAL; 5961 } 5962 } 5963 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 5964 5965 void qeth_core_get_ethtool_stats(struct net_device *dev, 5966 struct ethtool_stats *stats, u64 *data) 5967 { 5968 struct qeth_card *card = dev->ml_priv; 5969 data[0] = card->stats.rx_packets - 5970 card->perf_stats.initial_rx_packets; 5971 data[1] = card->perf_stats.bufs_rec; 5972 data[2] = card->stats.tx_packets - 5973 card->perf_stats.initial_tx_packets; 5974 data[3] = card->perf_stats.bufs_sent; 5975 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 5976 - card->perf_stats.skbs_sent_pack; 5977 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 5978 data[6] = card->perf_stats.skbs_sent_pack; 5979 data[7] = card->perf_stats.bufs_sent_pack; 5980 data[8] = card->perf_stats.sg_skbs_sent; 5981 data[9] = card->perf_stats.sg_frags_sent; 5982 data[10] = card->perf_stats.sg_skbs_rx; 5983 data[11] = card->perf_stats.sg_frags_rx; 5984 data[12] = card->perf_stats.sg_alloc_page_rx; 5985 data[13] = (card->perf_stats.large_send_bytes >> 10); 5986 data[14] = card->perf_stats.large_send_cnt; 5987 data[15] = card->perf_stats.sc_dp_p; 5988 data[16] = card->perf_stats.sc_p_dp; 5989 data[17] = QETH_LOW_WATERMARK_PACK; 5990 data[18] = QETH_HIGH_WATERMARK_PACK; 5991 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 5992 data[20] = (card->qdio.no_out_queues > 1) ? 5993 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 5994 data[21] = (card->qdio.no_out_queues > 2) ? 5995 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 5996 data[22] = (card->qdio.no_out_queues > 3) ? 5997 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 5998 data[23] = card->perf_stats.inbound_time; 5999 data[24] = card->perf_stats.inbound_cnt; 6000 data[25] = card->perf_stats.inbound_do_qdio_time; 6001 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6002 data[27] = card->perf_stats.outbound_handler_time; 6003 data[28] = card->perf_stats.outbound_handler_cnt; 6004 data[29] = card->perf_stats.outbound_time; 6005 data[30] = card->perf_stats.outbound_cnt; 6006 data[31] = card->perf_stats.outbound_do_qdio_time; 6007 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6008 data[33] = card->perf_stats.tx_csum; 6009 data[34] = card->perf_stats.tx_lin; 6010 data[35] = card->perf_stats.tx_linfail; 6011 data[36] = card->perf_stats.cq_cnt; 6012 data[37] = card->perf_stats.cq_time; 6013 } 6014 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6015 6016 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6017 { 6018 switch (stringset) { 6019 case ETH_SS_STATS: 6020 memcpy(data, &qeth_ethtool_stats_keys, 6021 sizeof(qeth_ethtool_stats_keys)); 6022 break; 6023 default: 6024 WARN_ON(1); 6025 break; 6026 } 6027 } 6028 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6029 6030 void qeth_core_get_drvinfo(struct net_device *dev, 6031 struct ethtool_drvinfo *info) 6032 { 6033 struct qeth_card *card = dev->ml_priv; 6034 6035 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6036 sizeof(info->driver)); 6037 strlcpy(info->version, "1.0", sizeof(info->version)); 6038 strlcpy(info->fw_version, card->info.mcl_level, 6039 sizeof(info->fw_version)); 6040 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6041 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6042 } 6043 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6044 6045 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6046 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6047 /* Always advertise and support all speeds up to specified, and only one */ 6048 /* specified port type. */ 6049 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6050 int maxspeed, int porttype) 6051 { 6052 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6053 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6054 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6055 6056 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6057 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6058 6059 switch (porttype) { 6060 case PORT_TP: 6061 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6062 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6063 break; 6064 case PORT_FIBRE: 6065 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6066 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6067 break; 6068 default: 6069 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6070 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6071 WARN_ON_ONCE(1); 6072 } 6073 6074 /* fallthrough from high to low, to select all legal speeds: */ 6075 switch (maxspeed) { 6076 case SPEED_10000: 6077 ethtool_link_ksettings_add_link_mode(cmd, supported, 6078 10000baseT_Full); 6079 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6080 10000baseT_Full); 6081 case SPEED_1000: 6082 ethtool_link_ksettings_add_link_mode(cmd, supported, 6083 1000baseT_Full); 6084 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6085 1000baseT_Full); 6086 ethtool_link_ksettings_add_link_mode(cmd, supported, 6087 1000baseT_Half); 6088 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6089 1000baseT_Half); 6090 case SPEED_100: 6091 ethtool_link_ksettings_add_link_mode(cmd, supported, 6092 100baseT_Full); 6093 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6094 100baseT_Full); 6095 ethtool_link_ksettings_add_link_mode(cmd, supported, 6096 100baseT_Half); 6097 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6098 100baseT_Half); 6099 case SPEED_10: 6100 ethtool_link_ksettings_add_link_mode(cmd, supported, 6101 10baseT_Full); 6102 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6103 10baseT_Full); 6104 ethtool_link_ksettings_add_link_mode(cmd, supported, 6105 10baseT_Half); 6106 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6107 10baseT_Half); 6108 /* end fallthrough */ 6109 break; 6110 default: 6111 ethtool_link_ksettings_add_link_mode(cmd, supported, 6112 10baseT_Full); 6113 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6114 10baseT_Full); 6115 ethtool_link_ksettings_add_link_mode(cmd, supported, 6116 10baseT_Half); 6117 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6118 10baseT_Half); 6119 WARN_ON_ONCE(1); 6120 } 6121 } 6122 6123 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6124 struct ethtool_link_ksettings *cmd) 6125 { 6126 struct qeth_card *card = netdev->ml_priv; 6127 enum qeth_link_types link_type; 6128 struct carrier_info carrier_info; 6129 int rc; 6130 6131 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6132 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6133 else 6134 link_type = card->info.link_type; 6135 6136 cmd->base.duplex = DUPLEX_FULL; 6137 cmd->base.autoneg = AUTONEG_ENABLE; 6138 cmd->base.phy_address = 0; 6139 cmd->base.mdio_support = 0; 6140 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6141 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6142 6143 switch (link_type) { 6144 case QETH_LINK_TYPE_FAST_ETH: 6145 case QETH_LINK_TYPE_LANE_ETH100: 6146 cmd->base.speed = SPEED_100; 6147 cmd->base.port = PORT_TP; 6148 break; 6149 case QETH_LINK_TYPE_GBIT_ETH: 6150 case QETH_LINK_TYPE_LANE_ETH1000: 6151 cmd->base.speed = SPEED_1000; 6152 cmd->base.port = PORT_FIBRE; 6153 break; 6154 case QETH_LINK_TYPE_10GBIT_ETH: 6155 cmd->base.speed = SPEED_10000; 6156 cmd->base.port = PORT_FIBRE; 6157 break; 6158 default: 6159 cmd->base.speed = SPEED_10; 6160 cmd->base.port = PORT_TP; 6161 } 6162 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6163 6164 /* Check if we can obtain more accurate information. */ 6165 /* If QUERY_CARD_INFO command is not supported or fails, */ 6166 /* just return the heuristics that was filled above. */ 6167 if (!qeth_card_hw_is_reachable(card)) 6168 return -ENODEV; 6169 rc = qeth_query_card_info(card, &carrier_info); 6170 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6171 return 0; 6172 if (rc) /* report error from the hardware operation */ 6173 return rc; 6174 /* on success, fill in the information got from the hardware */ 6175 6176 netdev_dbg(netdev, 6177 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6178 carrier_info.card_type, 6179 carrier_info.port_mode, 6180 carrier_info.port_speed); 6181 6182 /* Update attributes for which we've obtained more authoritative */ 6183 /* information, leave the rest the way they where filled above. */ 6184 switch (carrier_info.card_type) { 6185 case CARD_INFO_TYPE_1G_COPPER_A: 6186 case CARD_INFO_TYPE_1G_COPPER_B: 6187 cmd->base.port = PORT_TP; 6188 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6189 break; 6190 case CARD_INFO_TYPE_1G_FIBRE_A: 6191 case CARD_INFO_TYPE_1G_FIBRE_B: 6192 cmd->base.port = PORT_FIBRE; 6193 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6194 break; 6195 case CARD_INFO_TYPE_10G_FIBRE_A: 6196 case CARD_INFO_TYPE_10G_FIBRE_B: 6197 cmd->base.port = PORT_FIBRE; 6198 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6199 break; 6200 } 6201 6202 switch (carrier_info.port_mode) { 6203 case CARD_INFO_PORTM_FULLDUPLEX: 6204 cmd->base.duplex = DUPLEX_FULL; 6205 break; 6206 case CARD_INFO_PORTM_HALFDUPLEX: 6207 cmd->base.duplex = DUPLEX_HALF; 6208 break; 6209 } 6210 6211 switch (carrier_info.port_speed) { 6212 case CARD_INFO_PORTS_10M: 6213 cmd->base.speed = SPEED_10; 6214 break; 6215 case CARD_INFO_PORTS_100M: 6216 cmd->base.speed = SPEED_100; 6217 break; 6218 case CARD_INFO_PORTS_1G: 6219 cmd->base.speed = SPEED_1000; 6220 break; 6221 case CARD_INFO_PORTS_10G: 6222 cmd->base.speed = SPEED_10000; 6223 break; 6224 } 6225 6226 return 0; 6227 } 6228 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6229 6230 /* Callback to handle checksum offload command reply from OSA card. 6231 * Verify that required features have been enabled on the card. 6232 * Return error in hdr->return_code as this value is checked by caller. 6233 * 6234 * Always returns zero to indicate no further messages from the OSA card. 6235 */ 6236 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6237 struct qeth_reply *reply, 6238 unsigned long data) 6239 { 6240 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6241 struct qeth_checksum_cmd *chksum_cb = 6242 (struct qeth_checksum_cmd *)reply->param; 6243 6244 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6245 if (cmd->hdr.return_code) 6246 return 0; 6247 6248 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6249 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6250 chksum_cb->supported = 6251 cmd->data.setassparms.data.chksum.supported; 6252 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6253 } 6254 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6255 chksum_cb->supported = 6256 cmd->data.setassparms.data.chksum.supported; 6257 chksum_cb->enabled = 6258 cmd->data.setassparms.data.chksum.enabled; 6259 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6260 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6261 } 6262 return 0; 6263 } 6264 6265 /* Send command to OSA card and check results. */ 6266 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6267 enum qeth_ipa_funcs ipa_func, 6268 __u16 cmd_code, long data, 6269 struct qeth_checksum_cmd *chksum_cb) 6270 { 6271 struct qeth_cmd_buffer *iob; 6272 int rc = -ENOMEM; 6273 6274 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6275 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6276 sizeof(__u32), QETH_PROT_IPV4); 6277 if (iob) 6278 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6279 qeth_ipa_checksum_run_cmd_cb, 6280 chksum_cb); 6281 return rc; 6282 } 6283 6284 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6285 { 6286 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR | 6287 QETH_IPA_CHECKSUM_UDP | 6288 QETH_IPA_CHECKSUM_TCP; 6289 struct qeth_checksum_cmd chksum_cb; 6290 int rc; 6291 6292 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6293 &chksum_cb); 6294 if (!rc) { 6295 if ((required_features & chksum_cb.supported) != 6296 required_features) 6297 rc = -EIO; 6298 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6299 cstype == IPA_INBOUND_CHECKSUM) 6300 dev_warn(&card->gdev->dev, 6301 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6302 QETH_CARD_IFNAME(card)); 6303 } 6304 if (rc) { 6305 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6306 dev_warn(&card->gdev->dev, 6307 "Starting HW checksumming for %s failed, using SW checksumming\n", 6308 QETH_CARD_IFNAME(card)); 6309 return rc; 6310 } 6311 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6312 chksum_cb.supported, &chksum_cb); 6313 if (!rc) { 6314 if ((required_features & chksum_cb.enabled) != 6315 required_features) 6316 rc = -EIO; 6317 } 6318 if (rc) { 6319 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6320 dev_warn(&card->gdev->dev, 6321 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6322 QETH_CARD_IFNAME(card)); 6323 return rc; 6324 } 6325 6326 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6327 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6328 return 0; 6329 } 6330 6331 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6332 { 6333 int rc = (on) ? qeth_send_checksum_on(card, cstype) 6334 : qeth_send_simple_setassparms(card, cstype, 6335 IPA_CMD_ASS_STOP, 0); 6336 return rc ? -EIO : 0; 6337 } 6338 6339 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6340 { 6341 int rc; 6342 6343 QETH_CARD_TEXT(card, 3, "sttso"); 6344 6345 if (on) { 6346 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6347 IPA_CMD_ASS_START, 0); 6348 if (rc) { 6349 dev_warn(&card->gdev->dev, 6350 "Starting outbound TCP segmentation offload for %s failed\n", 6351 QETH_CARD_IFNAME(card)); 6352 return -EIO; 6353 } 6354 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6355 } else { 6356 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6357 IPA_CMD_ASS_STOP, 0); 6358 } 6359 return rc; 6360 } 6361 6362 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO) 6363 6364 /** 6365 * qeth_recover_features() - Restore device features after recovery 6366 * @dev: the recovering net_device 6367 * 6368 * Caller must hold rtnl lock. 6369 */ 6370 void qeth_recover_features(struct net_device *dev) 6371 { 6372 netdev_features_t features = dev->features; 6373 struct qeth_card *card = dev->ml_priv; 6374 6375 /* force-off any feature that needs an IPA sequence. 6376 * netdev_update_features() will restart them. 6377 */ 6378 dev->features &= ~QETH_HW_FEATURES; 6379 netdev_update_features(dev); 6380 6381 if (features == dev->features) 6382 return; 6383 dev_warn(&card->gdev->dev, 6384 "Device recovery failed to restore all offload features\n"); 6385 } 6386 EXPORT_SYMBOL_GPL(qeth_recover_features); 6387 6388 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6389 { 6390 struct qeth_card *card = dev->ml_priv; 6391 netdev_features_t changed = dev->features ^ features; 6392 int rc = 0; 6393 6394 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6395 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6396 6397 if ((changed & NETIF_F_IP_CSUM)) { 6398 rc = qeth_set_ipa_csum(card, 6399 features & NETIF_F_IP_CSUM ? 1 : 0, 6400 IPA_OUTBOUND_CHECKSUM); 6401 if (rc) 6402 changed ^= NETIF_F_IP_CSUM; 6403 } 6404 if ((changed & NETIF_F_RXCSUM)) { 6405 rc = qeth_set_ipa_csum(card, 6406 features & NETIF_F_RXCSUM ? 1 : 0, 6407 IPA_INBOUND_CHECKSUM); 6408 if (rc) 6409 changed ^= NETIF_F_RXCSUM; 6410 } 6411 if ((changed & NETIF_F_TSO)) { 6412 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6413 if (rc) 6414 changed ^= NETIF_F_TSO; 6415 } 6416 6417 /* everything changed successfully? */ 6418 if ((dev->features ^ features) == changed) 6419 return 0; 6420 /* something went wrong. save changed features and return error */ 6421 dev->features ^= changed; 6422 return -EIO; 6423 } 6424 EXPORT_SYMBOL_GPL(qeth_set_features); 6425 6426 netdev_features_t qeth_fix_features(struct net_device *dev, 6427 netdev_features_t features) 6428 { 6429 struct qeth_card *card = dev->ml_priv; 6430 6431 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6432 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6433 features &= ~NETIF_F_IP_CSUM; 6434 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6435 features &= ~NETIF_F_RXCSUM; 6436 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6437 features &= ~NETIF_F_TSO; 6438 /* if the card isn't up, remove features that require hw changes */ 6439 if (card->state == CARD_STATE_DOWN || 6440 card->state == CARD_STATE_RECOVER) 6441 features &= ~QETH_HW_FEATURES; 6442 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6443 return features; 6444 } 6445 EXPORT_SYMBOL_GPL(qeth_fix_features); 6446 6447 netdev_features_t qeth_features_check(struct sk_buff *skb, 6448 struct net_device *dev, 6449 netdev_features_t features) 6450 { 6451 /* GSO segmentation builds skbs with 6452 * a (small) linear part for the headers, and 6453 * page frags for the data. 6454 * Compared to a linear skb, the header-only part consumes an 6455 * additional buffer element. This reduces buffer utilization, and 6456 * hurts throughput. So compress small segments into one element. 6457 */ 6458 if (netif_needs_gso(skb, features)) { 6459 /* match skb_segment(): */ 6460 unsigned int doffset = skb->data - skb_mac_header(skb); 6461 unsigned int hsize = skb_shinfo(skb)->gso_size; 6462 unsigned int hroom = skb_headroom(skb); 6463 6464 /* linearize only if resulting skb allocations are order-0: */ 6465 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6466 features &= ~NETIF_F_SG; 6467 } 6468 6469 return vlan_features_check(skb, features); 6470 } 6471 EXPORT_SYMBOL_GPL(qeth_features_check); 6472 6473 static int __init qeth_core_init(void) 6474 { 6475 int rc; 6476 6477 pr_info("loading core functions\n"); 6478 INIT_LIST_HEAD(&qeth_core_card_list.list); 6479 INIT_LIST_HEAD(&qeth_dbf_list); 6480 rwlock_init(&qeth_core_card_list.rwlock); 6481 mutex_init(&qeth_mod_mutex); 6482 6483 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6484 6485 rc = qeth_register_dbf_views(); 6486 if (rc) 6487 goto out_err; 6488 qeth_core_root_dev = root_device_register("qeth"); 6489 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6490 if (rc) 6491 goto register_err; 6492 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6493 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6494 if (!qeth_core_header_cache) { 6495 rc = -ENOMEM; 6496 goto slab_err; 6497 } 6498 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6499 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6500 if (!qeth_qdio_outbuf_cache) { 6501 rc = -ENOMEM; 6502 goto cqslab_err; 6503 } 6504 rc = ccw_driver_register(&qeth_ccw_driver); 6505 if (rc) 6506 goto ccw_err; 6507 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6508 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6509 if (rc) 6510 goto ccwgroup_err; 6511 6512 return 0; 6513 6514 ccwgroup_err: 6515 ccw_driver_unregister(&qeth_ccw_driver); 6516 ccw_err: 6517 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6518 cqslab_err: 6519 kmem_cache_destroy(qeth_core_header_cache); 6520 slab_err: 6521 root_device_unregister(qeth_core_root_dev); 6522 register_err: 6523 qeth_unregister_dbf_views(); 6524 out_err: 6525 pr_err("Initializing the qeth device driver failed\n"); 6526 return rc; 6527 } 6528 6529 static void __exit qeth_core_exit(void) 6530 { 6531 qeth_clear_dbf_list(); 6532 destroy_workqueue(qeth_wq); 6533 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6534 ccw_driver_unregister(&qeth_ccw_driver); 6535 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6536 kmem_cache_destroy(qeth_core_header_cache); 6537 root_device_unregister(qeth_core_root_dev); 6538 qeth_unregister_dbf_views(); 6539 pr_info("core functions removed\n"); 6540 } 6541 6542 module_init(qeth_core_init); 6543 module_exit(qeth_core_exit); 6544 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6545 MODULE_DESCRIPTION("qeth core functions"); 6546 MODULE_LICENSE("GPL"); 6547