1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/compat.h> 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/string.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/ip.h> 20 #include <linux/tcp.h> 21 #include <linux/mii.h> 22 #include <linux/kthread.h> 23 #include <linux/slab.h> 24 #include <linux/if_vlan.h> 25 #include <linux/netdevice.h> 26 #include <linux/netdev_features.h> 27 #include <linux/skbuff.h> 28 #include <linux/vmalloc.h> 29 30 #include <net/iucv/af_iucv.h> 31 #include <net/dsfield.h> 32 33 #include <asm/ebcdic.h> 34 #include <asm/chpid.h> 35 #include <asm/io.h> 36 #include <asm/sysinfo.h> 37 #include <asm/diag.h> 38 #include <asm/cio.h> 39 #include <asm/ccwdev.h> 40 #include <asm/cpcmd.h> 41 42 #include "qeth_core.h" 43 44 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 45 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 46 /* N P A M L V H */ 47 [QETH_DBF_SETUP] = {"qeth_setup", 48 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 49 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 50 &debug_sprintf_view, NULL}, 51 [QETH_DBF_CTRL] = {"qeth_control", 52 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 53 }; 54 EXPORT_SYMBOL_GPL(qeth_dbf); 55 56 struct qeth_card_list_struct qeth_core_card_list; 57 EXPORT_SYMBOL_GPL(qeth_core_card_list); 58 struct kmem_cache *qeth_core_header_cache; 59 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 60 static struct kmem_cache *qeth_qdio_outbuf_cache; 61 62 static struct device *qeth_core_root_dev; 63 static struct lock_class_key qdio_out_skb_queue_key; 64 static struct mutex qeth_mod_mutex; 65 66 static void qeth_send_control_data_cb(struct qeth_channel *, 67 struct qeth_cmd_buffer *); 68 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 69 static void qeth_free_buffer_pool(struct qeth_card *); 70 static int qeth_qdio_establish(struct qeth_card *); 71 static void qeth_free_qdio_buffers(struct qeth_card *); 72 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 73 struct qeth_qdio_out_buffer *buf, 74 enum iucv_tx_notify notification); 75 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 76 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 77 78 struct workqueue_struct *qeth_wq; 79 EXPORT_SYMBOL_GPL(qeth_wq); 80 81 int qeth_card_hw_is_reachable(struct qeth_card *card) 82 { 83 return (card->state == CARD_STATE_SOFTSETUP) || 84 (card->state == CARD_STATE_UP); 85 } 86 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 87 88 static void qeth_close_dev_handler(struct work_struct *work) 89 { 90 struct qeth_card *card; 91 92 card = container_of(work, struct qeth_card, close_dev_work); 93 QETH_CARD_TEXT(card, 2, "cldevhdl"); 94 rtnl_lock(); 95 dev_close(card->dev); 96 rtnl_unlock(); 97 ccwgroup_set_offline(card->gdev); 98 } 99 100 void qeth_close_dev(struct qeth_card *card) 101 { 102 QETH_CARD_TEXT(card, 2, "cldevsubm"); 103 queue_work(qeth_wq, &card->close_dev_work); 104 } 105 EXPORT_SYMBOL_GPL(qeth_close_dev); 106 107 static const char *qeth_get_cardname(struct qeth_card *card) 108 { 109 if (card->info.guestlan) { 110 switch (card->info.type) { 111 case QETH_CARD_TYPE_OSD: 112 return " Virtual NIC QDIO"; 113 case QETH_CARD_TYPE_IQD: 114 return " Virtual NIC Hiper"; 115 case QETH_CARD_TYPE_OSM: 116 return " Virtual NIC QDIO - OSM"; 117 case QETH_CARD_TYPE_OSX: 118 return " Virtual NIC QDIO - OSX"; 119 default: 120 return " unknown"; 121 } 122 } else { 123 switch (card->info.type) { 124 case QETH_CARD_TYPE_OSD: 125 return " OSD Express"; 126 case QETH_CARD_TYPE_IQD: 127 return " HiperSockets"; 128 case QETH_CARD_TYPE_OSN: 129 return " OSN QDIO"; 130 case QETH_CARD_TYPE_OSM: 131 return " OSM QDIO"; 132 case QETH_CARD_TYPE_OSX: 133 return " OSX QDIO"; 134 default: 135 return " unknown"; 136 } 137 } 138 return " n/a"; 139 } 140 141 /* max length to be returned: 14 */ 142 const char *qeth_get_cardname_short(struct qeth_card *card) 143 { 144 if (card->info.guestlan) { 145 switch (card->info.type) { 146 case QETH_CARD_TYPE_OSD: 147 return "Virt.NIC QDIO"; 148 case QETH_CARD_TYPE_IQD: 149 return "Virt.NIC Hiper"; 150 case QETH_CARD_TYPE_OSM: 151 return "Virt.NIC OSM"; 152 case QETH_CARD_TYPE_OSX: 153 return "Virt.NIC OSX"; 154 default: 155 return "unknown"; 156 } 157 } else { 158 switch (card->info.type) { 159 case QETH_CARD_TYPE_OSD: 160 switch (card->info.link_type) { 161 case QETH_LINK_TYPE_FAST_ETH: 162 return "OSD_100"; 163 case QETH_LINK_TYPE_HSTR: 164 return "HSTR"; 165 case QETH_LINK_TYPE_GBIT_ETH: 166 return "OSD_1000"; 167 case QETH_LINK_TYPE_10GBIT_ETH: 168 return "OSD_10GIG"; 169 case QETH_LINK_TYPE_LANE_ETH100: 170 return "OSD_FE_LANE"; 171 case QETH_LINK_TYPE_LANE_TR: 172 return "OSD_TR_LANE"; 173 case QETH_LINK_TYPE_LANE_ETH1000: 174 return "OSD_GbE_LANE"; 175 case QETH_LINK_TYPE_LANE: 176 return "OSD_ATM_LANE"; 177 default: 178 return "OSD_Express"; 179 } 180 case QETH_CARD_TYPE_IQD: 181 return "HiperSockets"; 182 case QETH_CARD_TYPE_OSN: 183 return "OSN"; 184 case QETH_CARD_TYPE_OSM: 185 return "OSM_1000"; 186 case QETH_CARD_TYPE_OSX: 187 return "OSX_10GIG"; 188 default: 189 return "unknown"; 190 } 191 } 192 return "n/a"; 193 } 194 195 void qeth_set_recovery_task(struct qeth_card *card) 196 { 197 card->recovery_task = current; 198 } 199 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 200 201 void qeth_clear_recovery_task(struct qeth_card *card) 202 { 203 card->recovery_task = NULL; 204 } 205 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 206 207 static bool qeth_is_recovery_task(const struct qeth_card *card) 208 { 209 return card->recovery_task == current; 210 } 211 212 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 213 int clear_start_mask) 214 { 215 unsigned long flags; 216 217 spin_lock_irqsave(&card->thread_mask_lock, flags); 218 card->thread_allowed_mask = threads; 219 if (clear_start_mask) 220 card->thread_start_mask &= threads; 221 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 222 wake_up(&card->wait_q); 223 } 224 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 225 226 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 227 { 228 unsigned long flags; 229 int rc = 0; 230 231 spin_lock_irqsave(&card->thread_mask_lock, flags); 232 rc = (card->thread_running_mask & threads); 233 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 234 return rc; 235 } 236 EXPORT_SYMBOL_GPL(qeth_threads_running); 237 238 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 239 { 240 if (qeth_is_recovery_task(card)) 241 return 0; 242 return wait_event_interruptible(card->wait_q, 243 qeth_threads_running(card, threads) == 0); 244 } 245 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 246 247 void qeth_clear_working_pool_list(struct qeth_card *card) 248 { 249 struct qeth_buffer_pool_entry *pool_entry, *tmp; 250 251 QETH_CARD_TEXT(card, 5, "clwrklst"); 252 list_for_each_entry_safe(pool_entry, tmp, 253 &card->qdio.in_buf_pool.entry_list, list){ 254 list_del(&pool_entry->list); 255 } 256 } 257 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 258 259 static int qeth_alloc_buffer_pool(struct qeth_card *card) 260 { 261 struct qeth_buffer_pool_entry *pool_entry; 262 void *ptr; 263 int i, j; 264 265 QETH_CARD_TEXT(card, 5, "alocpool"); 266 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 267 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 268 if (!pool_entry) { 269 qeth_free_buffer_pool(card); 270 return -ENOMEM; 271 } 272 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 273 ptr = (void *) __get_free_page(GFP_KERNEL); 274 if (!ptr) { 275 while (j > 0) 276 free_page((unsigned long) 277 pool_entry->elements[--j]); 278 kfree(pool_entry); 279 qeth_free_buffer_pool(card); 280 return -ENOMEM; 281 } 282 pool_entry->elements[j] = ptr; 283 } 284 list_add(&pool_entry->init_list, 285 &card->qdio.init_pool.entry_list); 286 } 287 return 0; 288 } 289 290 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 291 { 292 QETH_CARD_TEXT(card, 2, "realcbp"); 293 294 if ((card->state != CARD_STATE_DOWN) && 295 (card->state != CARD_STATE_RECOVER)) 296 return -EPERM; 297 298 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 299 qeth_clear_working_pool_list(card); 300 qeth_free_buffer_pool(card); 301 card->qdio.in_buf_pool.buf_count = bufcnt; 302 card->qdio.init_pool.buf_count = bufcnt; 303 return qeth_alloc_buffer_pool(card); 304 } 305 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 306 307 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 308 { 309 if (!q) 310 return; 311 312 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 313 kfree(q); 314 } 315 316 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 317 { 318 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 319 int i; 320 321 if (!q) 322 return NULL; 323 324 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 325 kfree(q); 326 return NULL; 327 } 328 329 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 330 q->bufs[i].buffer = q->qdio_bufs[i]; 331 332 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 333 return q; 334 } 335 336 static int qeth_cq_init(struct qeth_card *card) 337 { 338 int rc; 339 340 if (card->options.cq == QETH_CQ_ENABLED) { 341 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 342 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 343 QDIO_MAX_BUFFERS_PER_Q); 344 card->qdio.c_q->next_buf_to_init = 127; 345 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 346 card->qdio.no_in_queues - 1, 0, 347 127); 348 if (rc) { 349 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 350 goto out; 351 } 352 } 353 rc = 0; 354 out: 355 return rc; 356 } 357 358 static int qeth_alloc_cq(struct qeth_card *card) 359 { 360 int rc; 361 362 if (card->options.cq == QETH_CQ_ENABLED) { 363 int i; 364 struct qdio_outbuf_state *outbuf_states; 365 366 QETH_DBF_TEXT(SETUP, 2, "cqon"); 367 card->qdio.c_q = qeth_alloc_qdio_queue(); 368 if (!card->qdio.c_q) { 369 rc = -1; 370 goto kmsg_out; 371 } 372 card->qdio.no_in_queues = 2; 373 card->qdio.out_bufstates = 374 kcalloc(card->qdio.no_out_queues * 375 QDIO_MAX_BUFFERS_PER_Q, 376 sizeof(struct qdio_outbuf_state), 377 GFP_KERNEL); 378 outbuf_states = card->qdio.out_bufstates; 379 if (outbuf_states == NULL) { 380 rc = -1; 381 goto free_cq_out; 382 } 383 for (i = 0; i < card->qdio.no_out_queues; ++i) { 384 card->qdio.out_qs[i]->bufstates = outbuf_states; 385 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 386 } 387 } else { 388 QETH_DBF_TEXT(SETUP, 2, "nocq"); 389 card->qdio.c_q = NULL; 390 card->qdio.no_in_queues = 1; 391 } 392 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 393 rc = 0; 394 out: 395 return rc; 396 free_cq_out: 397 qeth_free_qdio_queue(card->qdio.c_q); 398 card->qdio.c_q = NULL; 399 kmsg_out: 400 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 401 goto out; 402 } 403 404 static void qeth_free_cq(struct qeth_card *card) 405 { 406 if (card->qdio.c_q) { 407 --card->qdio.no_in_queues; 408 qeth_free_qdio_queue(card->qdio.c_q); 409 card->qdio.c_q = NULL; 410 } 411 kfree(card->qdio.out_bufstates); 412 card->qdio.out_bufstates = NULL; 413 } 414 415 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 416 int delayed) 417 { 418 enum iucv_tx_notify n; 419 420 switch (sbalf15) { 421 case 0: 422 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 423 break; 424 case 4: 425 case 16: 426 case 17: 427 case 18: 428 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 429 TX_NOTIFY_UNREACHABLE; 430 break; 431 default: 432 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 433 TX_NOTIFY_GENERALERROR; 434 break; 435 } 436 437 return n; 438 } 439 440 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 441 int forced_cleanup) 442 { 443 if (q->card->options.cq != QETH_CQ_ENABLED) 444 return; 445 446 if (q->bufs[bidx]->next_pending != NULL) { 447 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 448 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 449 450 while (c) { 451 if (forced_cleanup || 452 atomic_read(&c->state) == 453 QETH_QDIO_BUF_HANDLED_DELAYED) { 454 struct qeth_qdio_out_buffer *f = c; 455 QETH_CARD_TEXT(f->q->card, 5, "fp"); 456 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 457 /* release here to avoid interleaving between 458 outbound tasklet and inbound tasklet 459 regarding notifications and lifecycle */ 460 qeth_release_skbs(c); 461 462 c = f->next_pending; 463 WARN_ON_ONCE(head->next_pending != f); 464 head->next_pending = c; 465 kmem_cache_free(qeth_qdio_outbuf_cache, f); 466 } else { 467 head = c; 468 c = c->next_pending; 469 } 470 471 } 472 } 473 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 474 QETH_QDIO_BUF_HANDLED_DELAYED)) { 475 /* for recovery situations */ 476 qeth_init_qdio_out_buf(q, bidx); 477 QETH_CARD_TEXT(q->card, 2, "clprecov"); 478 } 479 } 480 481 482 static void qeth_qdio_handle_aob(struct qeth_card *card, 483 unsigned long phys_aob_addr) 484 { 485 struct qaob *aob; 486 struct qeth_qdio_out_buffer *buffer; 487 enum iucv_tx_notify notification; 488 unsigned int i; 489 490 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 491 QETH_CARD_TEXT(card, 5, "haob"); 492 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 493 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 494 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 495 496 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 497 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 498 notification = TX_NOTIFY_OK; 499 } else { 500 WARN_ON_ONCE(atomic_read(&buffer->state) != 501 QETH_QDIO_BUF_PENDING); 502 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 503 notification = TX_NOTIFY_DELAYED_OK; 504 } 505 506 if (aob->aorc != 0) { 507 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 508 notification = qeth_compute_cq_notification(aob->aorc, 1); 509 } 510 qeth_notify_skbs(buffer->q, buffer, notification); 511 512 /* Free dangling allocations. The attached skbs are handled by 513 * qeth_cleanup_handled_pending(). 514 */ 515 for (i = 0; 516 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card); 517 i++) { 518 if (aob->sba[i] && buffer->is_header[i]) 519 kmem_cache_free(qeth_core_header_cache, 520 (void *) aob->sba[i]); 521 } 522 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED); 523 524 qdio_release_aob(aob); 525 } 526 527 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 528 { 529 return card->options.cq == QETH_CQ_ENABLED && 530 card->qdio.c_q != NULL && 531 queue != 0 && 532 queue == card->qdio.no_in_queues - 1; 533 } 534 535 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data) 536 { 537 ccw->cmd_code = cmd_code; 538 ccw->flags = CCW_FLAG_SLI; 539 ccw->count = len; 540 ccw->cda = (__u32) __pa(data); 541 } 542 543 static int __qeth_issue_next_read(struct qeth_card *card) 544 { 545 struct qeth_channel *channel = &card->read; 546 struct qeth_cmd_buffer *iob; 547 int rc; 548 549 QETH_CARD_TEXT(card, 5, "issnxrd"); 550 if (channel->state != CH_STATE_UP) 551 return -EIO; 552 iob = qeth_get_buffer(channel); 553 if (!iob) { 554 dev_warn(&card->gdev->dev, "The qeth device driver " 555 "failed to recover an error on the device\n"); 556 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 557 "available\n", dev_name(&card->gdev->dev)); 558 return -ENOMEM; 559 } 560 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data); 561 QETH_CARD_TEXT(card, 6, "noirqpnd"); 562 rc = ccw_device_start(channel->ccwdev, channel->ccw, 563 (addr_t) iob, 0, 0); 564 if (rc) { 565 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 566 "rc=%i\n", dev_name(&card->gdev->dev), rc); 567 atomic_set(&channel->irq_pending, 0); 568 card->read_or_write_problem = 1; 569 qeth_schedule_recovery(card); 570 wake_up(&card->wait_q); 571 } 572 return rc; 573 } 574 575 static int qeth_issue_next_read(struct qeth_card *card) 576 { 577 int ret; 578 579 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 580 ret = __qeth_issue_next_read(card); 581 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 582 583 return ret; 584 } 585 586 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 587 { 588 struct qeth_reply *reply; 589 590 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 591 if (reply) { 592 refcount_set(&reply->refcnt, 1); 593 atomic_set(&reply->received, 0); 594 reply->card = card; 595 } 596 return reply; 597 } 598 599 static void qeth_get_reply(struct qeth_reply *reply) 600 { 601 refcount_inc(&reply->refcnt); 602 } 603 604 static void qeth_put_reply(struct qeth_reply *reply) 605 { 606 if (refcount_dec_and_test(&reply->refcnt)) 607 kfree(reply); 608 } 609 610 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 611 struct qeth_card *card) 612 { 613 const char *ipa_name; 614 int com = cmd->hdr.command; 615 ipa_name = qeth_get_ipa_cmd_name(com); 616 if (rc) 617 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 618 "x%X \"%s\"\n", 619 ipa_name, com, dev_name(&card->gdev->dev), 620 QETH_CARD_IFNAME(card), rc, 621 qeth_get_ipa_msg(rc)); 622 else 623 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 624 ipa_name, com, dev_name(&card->gdev->dev), 625 QETH_CARD_IFNAME(card)); 626 } 627 628 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 629 struct qeth_cmd_buffer *iob) 630 { 631 struct qeth_ipa_cmd *cmd = NULL; 632 633 QETH_CARD_TEXT(card, 5, "chkipad"); 634 if (IS_IPA(iob->data)) { 635 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 636 if (IS_IPA_REPLY(cmd)) { 637 if (cmd->hdr.command != IPA_CMD_SETCCID && 638 cmd->hdr.command != IPA_CMD_DELCCID && 639 cmd->hdr.command != IPA_CMD_MODCCID && 640 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 641 qeth_issue_ipa_msg(cmd, 642 cmd->hdr.return_code, card); 643 return cmd; 644 } else { 645 switch (cmd->hdr.command) { 646 case IPA_CMD_STOPLAN: 647 if (cmd->hdr.return_code == 648 IPA_RC_VEPA_TO_VEB_TRANSITION) { 649 dev_err(&card->gdev->dev, 650 "Interface %s is down because the " 651 "adjacent port is no longer in " 652 "reflective relay mode\n", 653 QETH_CARD_IFNAME(card)); 654 qeth_close_dev(card); 655 } else { 656 dev_warn(&card->gdev->dev, 657 "The link for interface %s on CHPID" 658 " 0x%X failed\n", 659 QETH_CARD_IFNAME(card), 660 card->info.chpid); 661 qeth_issue_ipa_msg(cmd, 662 cmd->hdr.return_code, card); 663 } 664 card->lan_online = 0; 665 netif_carrier_off(card->dev); 666 return NULL; 667 case IPA_CMD_STARTLAN: 668 dev_info(&card->gdev->dev, 669 "The link for %s on CHPID 0x%X has" 670 " been restored\n", 671 QETH_CARD_IFNAME(card), 672 card->info.chpid); 673 netif_carrier_on(card->dev); 674 card->lan_online = 1; 675 if (card->info.hwtrap) 676 card->info.hwtrap = 2; 677 qeth_schedule_recovery(card); 678 return NULL; 679 case IPA_CMD_SETBRIDGEPORT_IQD: 680 case IPA_CMD_SETBRIDGEPORT_OSA: 681 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 682 if (card->discipline->control_event_handler 683 (card, cmd)) 684 return cmd; 685 else 686 return NULL; 687 case IPA_CMD_MODCCID: 688 return cmd; 689 case IPA_CMD_REGISTER_LOCAL_ADDR: 690 QETH_CARD_TEXT(card, 3, "irla"); 691 break; 692 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 693 QETH_CARD_TEXT(card, 3, "urla"); 694 break; 695 default: 696 QETH_DBF_MESSAGE(2, "Received data is IPA " 697 "but not a reply!\n"); 698 break; 699 } 700 } 701 } 702 return cmd; 703 } 704 705 void qeth_clear_ipacmd_list(struct qeth_card *card) 706 { 707 struct qeth_reply *reply, *r; 708 unsigned long flags; 709 710 QETH_CARD_TEXT(card, 4, "clipalst"); 711 712 spin_lock_irqsave(&card->lock, flags); 713 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 714 qeth_get_reply(reply); 715 reply->rc = -EIO; 716 atomic_inc(&reply->received); 717 list_del_init(&reply->list); 718 wake_up(&reply->wait_q); 719 qeth_put_reply(reply); 720 } 721 spin_unlock_irqrestore(&card->lock, flags); 722 } 723 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 724 725 static int qeth_check_idx_response(struct qeth_card *card, 726 unsigned char *buffer) 727 { 728 if (!buffer) 729 return 0; 730 731 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 732 if ((buffer[2] & 0xc0) == 0xc0) { 733 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n", 734 buffer[4]); 735 QETH_CARD_TEXT(card, 2, "ckidxres"); 736 QETH_CARD_TEXT(card, 2, " idxterm"); 737 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 738 if (buffer[4] == 0xf6) { 739 dev_err(&card->gdev->dev, 740 "The qeth device is not configured " 741 "for the OSI layer required by z/VM\n"); 742 return -EPERM; 743 } 744 return -EIO; 745 } 746 return 0; 747 } 748 749 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 750 { 751 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 752 dev_get_drvdata(&cdev->dev))->dev); 753 return card; 754 } 755 756 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 757 { 758 __u8 index; 759 760 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 761 index = channel->io_buf_no; 762 do { 763 if (channel->iob[index].state == BUF_STATE_FREE) { 764 channel->iob[index].state = BUF_STATE_LOCKED; 765 channel->io_buf_no = (channel->io_buf_no + 1) % 766 QETH_CMD_BUFFER_NO; 767 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 768 return channel->iob + index; 769 } 770 index = (index + 1) % QETH_CMD_BUFFER_NO; 771 } while (index != channel->io_buf_no); 772 773 return NULL; 774 } 775 776 void qeth_release_buffer(struct qeth_channel *channel, 777 struct qeth_cmd_buffer *iob) 778 { 779 unsigned long flags; 780 781 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 782 spin_lock_irqsave(&channel->iob_lock, flags); 783 memset(iob->data, 0, QETH_BUFSIZE); 784 iob->state = BUF_STATE_FREE; 785 iob->callback = qeth_send_control_data_cb; 786 iob->rc = 0; 787 spin_unlock_irqrestore(&channel->iob_lock, flags); 788 wake_up(&channel->wait_q); 789 } 790 EXPORT_SYMBOL_GPL(qeth_release_buffer); 791 792 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 793 { 794 struct qeth_cmd_buffer *buffer = NULL; 795 unsigned long flags; 796 797 spin_lock_irqsave(&channel->iob_lock, flags); 798 buffer = __qeth_get_buffer(channel); 799 spin_unlock_irqrestore(&channel->iob_lock, flags); 800 return buffer; 801 } 802 803 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 804 { 805 struct qeth_cmd_buffer *buffer; 806 wait_event(channel->wait_q, 807 ((buffer = qeth_get_buffer(channel)) != NULL)); 808 return buffer; 809 } 810 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 811 812 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 813 { 814 int cnt; 815 816 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 817 qeth_release_buffer(channel, &channel->iob[cnt]); 818 channel->io_buf_no = 0; 819 } 820 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 821 822 static void qeth_send_control_data_cb(struct qeth_channel *channel, 823 struct qeth_cmd_buffer *iob) 824 { 825 struct qeth_card *card; 826 struct qeth_reply *reply, *r; 827 struct qeth_ipa_cmd *cmd; 828 unsigned long flags; 829 int keep_reply; 830 int rc = 0; 831 832 card = CARD_FROM_CDEV(channel->ccwdev); 833 QETH_CARD_TEXT(card, 4, "sndctlcb"); 834 rc = qeth_check_idx_response(card, iob->data); 835 switch (rc) { 836 case 0: 837 break; 838 case -EIO: 839 qeth_clear_ipacmd_list(card); 840 qeth_schedule_recovery(card); 841 /* fall through */ 842 default: 843 goto out; 844 } 845 846 cmd = qeth_check_ipa_data(card, iob); 847 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 848 goto out; 849 /*in case of OSN : check if cmd is set */ 850 if (card->info.type == QETH_CARD_TYPE_OSN && 851 cmd && 852 cmd->hdr.command != IPA_CMD_STARTLAN && 853 card->osn_info.assist_cb != NULL) { 854 card->osn_info.assist_cb(card->dev, cmd); 855 goto out; 856 } 857 858 spin_lock_irqsave(&card->lock, flags); 859 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 860 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 861 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 862 qeth_get_reply(reply); 863 list_del_init(&reply->list); 864 spin_unlock_irqrestore(&card->lock, flags); 865 keep_reply = 0; 866 if (reply->callback != NULL) { 867 if (cmd) { 868 reply->offset = (__u16)((char *)cmd - 869 (char *)iob->data); 870 keep_reply = reply->callback(card, 871 reply, 872 (unsigned long)cmd); 873 } else 874 keep_reply = reply->callback(card, 875 reply, 876 (unsigned long)iob); 877 } 878 if (cmd) 879 reply->rc = (u16) cmd->hdr.return_code; 880 else if (iob->rc) 881 reply->rc = iob->rc; 882 if (keep_reply) { 883 spin_lock_irqsave(&card->lock, flags); 884 list_add_tail(&reply->list, 885 &card->cmd_waiter_list); 886 spin_unlock_irqrestore(&card->lock, flags); 887 } else { 888 atomic_inc(&reply->received); 889 wake_up(&reply->wait_q); 890 } 891 qeth_put_reply(reply); 892 goto out; 893 } 894 } 895 spin_unlock_irqrestore(&card->lock, flags); 896 out: 897 memcpy(&card->seqno.pdu_hdr_ack, 898 QETH_PDU_HEADER_SEQ_NO(iob->data), 899 QETH_SEQ_NO_LENGTH); 900 qeth_release_buffer(channel, iob); 901 } 902 903 static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers) 904 { 905 int cnt; 906 907 QETH_DBF_TEXT(SETUP, 2, "setupch"); 908 909 channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA); 910 if (!channel->ccw) 911 return -ENOMEM; 912 channel->state = CH_STATE_DOWN; 913 atomic_set(&channel->irq_pending, 0); 914 init_waitqueue_head(&channel->wait_q); 915 916 if (!alloc_buffers) 917 return 0; 918 919 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 920 channel->iob[cnt].data = 921 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 922 if (channel->iob[cnt].data == NULL) 923 break; 924 channel->iob[cnt].state = BUF_STATE_FREE; 925 channel->iob[cnt].channel = channel; 926 channel->iob[cnt].callback = qeth_send_control_data_cb; 927 channel->iob[cnt].rc = 0; 928 } 929 if (cnt < QETH_CMD_BUFFER_NO) { 930 kfree(channel->ccw); 931 while (cnt-- > 0) 932 kfree(channel->iob[cnt].data); 933 return -ENOMEM; 934 } 935 channel->io_buf_no = 0; 936 spin_lock_init(&channel->iob_lock); 937 938 return 0; 939 } 940 941 static int qeth_set_thread_start_bit(struct qeth_card *card, 942 unsigned long thread) 943 { 944 unsigned long flags; 945 946 spin_lock_irqsave(&card->thread_mask_lock, flags); 947 if (!(card->thread_allowed_mask & thread) || 948 (card->thread_start_mask & thread)) { 949 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 950 return -EPERM; 951 } 952 card->thread_start_mask |= thread; 953 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 954 return 0; 955 } 956 957 void qeth_clear_thread_start_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_start_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_start_bit); 967 968 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 969 { 970 unsigned long flags; 971 972 spin_lock_irqsave(&card->thread_mask_lock, flags); 973 card->thread_running_mask &= ~thread; 974 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 975 wake_up_all(&card->wait_q); 976 } 977 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 978 979 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 980 { 981 unsigned long flags; 982 int rc = 0; 983 984 spin_lock_irqsave(&card->thread_mask_lock, flags); 985 if (card->thread_start_mask & thread) { 986 if ((card->thread_allowed_mask & thread) && 987 !(card->thread_running_mask & thread)) { 988 rc = 1; 989 card->thread_start_mask &= ~thread; 990 card->thread_running_mask |= thread; 991 } else 992 rc = -EPERM; 993 } 994 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 995 return rc; 996 } 997 998 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 999 { 1000 int rc = 0; 1001 1002 wait_event(card->wait_q, 1003 (rc = __qeth_do_run_thread(card, thread)) >= 0); 1004 return rc; 1005 } 1006 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 1007 1008 void qeth_schedule_recovery(struct qeth_card *card) 1009 { 1010 QETH_CARD_TEXT(card, 2, "startrec"); 1011 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 1012 schedule_work(&card->kernel_thread_starter); 1013 } 1014 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 1015 1016 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 1017 { 1018 int dstat, cstat; 1019 char *sense; 1020 struct qeth_card *card; 1021 1022 sense = (char *) irb->ecw; 1023 cstat = irb->scsw.cmd.cstat; 1024 dstat = irb->scsw.cmd.dstat; 1025 card = CARD_FROM_CDEV(cdev); 1026 1027 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1028 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1029 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1030 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1031 dev_warn(&cdev->dev, "The qeth device driver " 1032 "failed to recover an error on the device\n"); 1033 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1034 dev_name(&cdev->dev), dstat, cstat); 1035 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1036 16, 1, irb, 64, 1); 1037 return 1; 1038 } 1039 1040 if (dstat & DEV_STAT_UNIT_CHECK) { 1041 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1042 SENSE_RESETTING_EVENT_FLAG) { 1043 QETH_CARD_TEXT(card, 2, "REVIND"); 1044 return 1; 1045 } 1046 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1047 SENSE_COMMAND_REJECT_FLAG) { 1048 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1049 return 1; 1050 } 1051 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1052 QETH_CARD_TEXT(card, 2, "AFFE"); 1053 return 1; 1054 } 1055 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1056 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1057 return 0; 1058 } 1059 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1060 return 1; 1061 } 1062 return 0; 1063 } 1064 1065 static long __qeth_check_irb_error(struct ccw_device *cdev, 1066 unsigned long intparm, struct irb *irb) 1067 { 1068 struct qeth_card *card; 1069 1070 card = CARD_FROM_CDEV(cdev); 1071 1072 if (!card || !IS_ERR(irb)) 1073 return 0; 1074 1075 switch (PTR_ERR(irb)) { 1076 case -EIO: 1077 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1078 dev_name(&cdev->dev)); 1079 QETH_CARD_TEXT(card, 2, "ckirberr"); 1080 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1081 break; 1082 case -ETIMEDOUT: 1083 dev_warn(&cdev->dev, "A hardware operation timed out" 1084 " on the device\n"); 1085 QETH_CARD_TEXT(card, 2, "ckirberr"); 1086 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1087 if (intparm == QETH_RCD_PARM) { 1088 if (card->data.ccwdev == cdev) { 1089 card->data.state = CH_STATE_DOWN; 1090 wake_up(&card->wait_q); 1091 } 1092 } 1093 break; 1094 default: 1095 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1096 dev_name(&cdev->dev), PTR_ERR(irb)); 1097 QETH_CARD_TEXT(card, 2, "ckirberr"); 1098 QETH_CARD_TEXT(card, 2, " rc???"); 1099 } 1100 return PTR_ERR(irb); 1101 } 1102 1103 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1104 struct irb *irb) 1105 { 1106 int rc; 1107 int cstat, dstat; 1108 struct qeth_cmd_buffer *iob = NULL; 1109 struct qeth_channel *channel; 1110 struct qeth_card *card; 1111 1112 card = CARD_FROM_CDEV(cdev); 1113 if (!card) 1114 return; 1115 1116 QETH_CARD_TEXT(card, 5, "irq"); 1117 1118 if (card->read.ccwdev == cdev) { 1119 channel = &card->read; 1120 QETH_CARD_TEXT(card, 5, "read"); 1121 } else if (card->write.ccwdev == cdev) { 1122 channel = &card->write; 1123 QETH_CARD_TEXT(card, 5, "write"); 1124 } else { 1125 channel = &card->data; 1126 QETH_CARD_TEXT(card, 5, "data"); 1127 } 1128 1129 if (qeth_intparm_is_iob(intparm)) 1130 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1131 1132 if (__qeth_check_irb_error(cdev, intparm, irb)) { 1133 /* IO was terminated, free its resources. */ 1134 if (iob) 1135 qeth_release_buffer(iob->channel, iob); 1136 atomic_set(&channel->irq_pending, 0); 1137 wake_up(&card->wait_q); 1138 return; 1139 } 1140 1141 atomic_set(&channel->irq_pending, 0); 1142 1143 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1144 channel->state = CH_STATE_STOPPED; 1145 1146 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1147 channel->state = CH_STATE_HALTED; 1148 1149 /*let's wake up immediately on data channel*/ 1150 if ((channel == &card->data) && (intparm != 0) && 1151 (intparm != QETH_RCD_PARM)) 1152 goto out; 1153 1154 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1155 QETH_CARD_TEXT(card, 6, "clrchpar"); 1156 /* we don't have to handle this further */ 1157 intparm = 0; 1158 } 1159 if (intparm == QETH_HALT_CHANNEL_PARM) { 1160 QETH_CARD_TEXT(card, 6, "hltchpar"); 1161 /* we don't have to handle this further */ 1162 intparm = 0; 1163 } 1164 1165 cstat = irb->scsw.cmd.cstat; 1166 dstat = irb->scsw.cmd.dstat; 1167 1168 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1169 (dstat & DEV_STAT_UNIT_CHECK) || 1170 (cstat)) { 1171 if (irb->esw.esw0.erw.cons) { 1172 dev_warn(&channel->ccwdev->dev, 1173 "The qeth device driver failed to recover " 1174 "an error on the device\n"); 1175 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1176 "0x%X dstat 0x%X\n", 1177 dev_name(&channel->ccwdev->dev), cstat, dstat); 1178 print_hex_dump(KERN_WARNING, "qeth: irb ", 1179 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1180 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1181 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1182 } 1183 if (intparm == QETH_RCD_PARM) { 1184 channel->state = CH_STATE_DOWN; 1185 goto out; 1186 } 1187 rc = qeth_get_problem(cdev, irb); 1188 if (rc) { 1189 card->read_or_write_problem = 1; 1190 qeth_clear_ipacmd_list(card); 1191 qeth_schedule_recovery(card); 1192 goto out; 1193 } 1194 } 1195 1196 if (intparm == QETH_RCD_PARM) { 1197 channel->state = CH_STATE_RCD_DONE; 1198 goto out; 1199 } 1200 if (channel == &card->data) 1201 return; 1202 if (channel == &card->read && 1203 channel->state == CH_STATE_UP) 1204 __qeth_issue_next_read(card); 1205 1206 if (iob && iob->callback) 1207 iob->callback(iob->channel, iob); 1208 1209 out: 1210 wake_up(&card->wait_q); 1211 return; 1212 } 1213 1214 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1215 struct qeth_qdio_out_buffer *buf, 1216 enum iucv_tx_notify notification) 1217 { 1218 struct sk_buff *skb; 1219 1220 if (skb_queue_empty(&buf->skb_list)) 1221 goto out; 1222 skb = skb_peek(&buf->skb_list); 1223 while (skb) { 1224 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1225 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1226 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1227 if (skb->sk) { 1228 struct iucv_sock *iucv = iucv_sk(skb->sk); 1229 iucv->sk_txnotify(skb, notification); 1230 } 1231 } 1232 if (skb_queue_is_last(&buf->skb_list, skb)) 1233 skb = NULL; 1234 else 1235 skb = skb_queue_next(&buf->skb_list, skb); 1236 } 1237 out: 1238 return; 1239 } 1240 1241 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1242 { 1243 struct sk_buff *skb; 1244 struct iucv_sock *iucv; 1245 int notify_general_error = 0; 1246 1247 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1248 notify_general_error = 1; 1249 1250 /* release may never happen from within CQ tasklet scope */ 1251 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1252 1253 skb = skb_dequeue(&buf->skb_list); 1254 while (skb) { 1255 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1256 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1257 if (notify_general_error && 1258 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1259 if (skb->sk) { 1260 iucv = iucv_sk(skb->sk); 1261 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1262 } 1263 } 1264 refcount_dec(&skb->users); 1265 dev_kfree_skb_any(skb); 1266 skb = skb_dequeue(&buf->skb_list); 1267 } 1268 } 1269 1270 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1271 struct qeth_qdio_out_buffer *buf) 1272 { 1273 int i; 1274 1275 /* is PCI flag set on buffer? */ 1276 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1277 atomic_dec(&queue->set_pci_flags_count); 1278 1279 qeth_release_skbs(buf); 1280 1281 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1282 if (buf->buffer->element[i].addr && buf->is_header[i]) 1283 kmem_cache_free(qeth_core_header_cache, 1284 buf->buffer->element[i].addr); 1285 buf->is_header[i] = 0; 1286 } 1287 1288 qeth_scrub_qdio_buffer(buf->buffer, 1289 QETH_MAX_BUFFER_ELEMENTS(queue->card)); 1290 buf->next_element_to_fill = 0; 1291 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); 1292 } 1293 1294 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1295 { 1296 int j; 1297 1298 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1299 if (!q->bufs[j]) 1300 continue; 1301 qeth_cleanup_handled_pending(q, j, 1); 1302 qeth_clear_output_buffer(q, q->bufs[j]); 1303 if (free) { 1304 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1305 q->bufs[j] = NULL; 1306 } 1307 } 1308 } 1309 1310 void qeth_clear_qdio_buffers(struct qeth_card *card) 1311 { 1312 int i; 1313 1314 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1315 /* clear outbound buffers to free skbs */ 1316 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1317 if (card->qdio.out_qs[i]) { 1318 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1319 } 1320 } 1321 } 1322 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1323 1324 static void qeth_free_buffer_pool(struct qeth_card *card) 1325 { 1326 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1327 int i = 0; 1328 list_for_each_entry_safe(pool_entry, tmp, 1329 &card->qdio.init_pool.entry_list, init_list){ 1330 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1331 free_page((unsigned long)pool_entry->elements[i]); 1332 list_del(&pool_entry->init_list); 1333 kfree(pool_entry); 1334 } 1335 } 1336 1337 static void qeth_clean_channel(struct qeth_channel *channel) 1338 { 1339 int cnt; 1340 1341 QETH_DBF_TEXT(SETUP, 2, "freech"); 1342 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1343 kfree(channel->iob[cnt].data); 1344 kfree(channel->ccw); 1345 } 1346 1347 static void qeth_set_single_write_queues(struct qeth_card *card) 1348 { 1349 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1350 (card->qdio.no_out_queues == 4)) 1351 qeth_free_qdio_buffers(card); 1352 1353 card->qdio.no_out_queues = 1; 1354 if (card->qdio.default_out_queue != 0) 1355 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1356 1357 card->qdio.default_out_queue = 0; 1358 } 1359 1360 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1361 { 1362 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1363 (card->qdio.no_out_queues == 1)) { 1364 qeth_free_qdio_buffers(card); 1365 card->qdio.default_out_queue = 2; 1366 } 1367 card->qdio.no_out_queues = 4; 1368 } 1369 1370 static void qeth_update_from_chp_desc(struct qeth_card *card) 1371 { 1372 struct ccw_device *ccwdev; 1373 struct channel_path_desc_fmt0 *chp_dsc; 1374 1375 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1376 1377 ccwdev = card->data.ccwdev; 1378 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1379 if (!chp_dsc) 1380 goto out; 1381 1382 card->info.func_level = 0x4100 + chp_dsc->desc; 1383 if (card->info.type == QETH_CARD_TYPE_IQD) 1384 goto out; 1385 1386 /* CHPP field bit 6 == 1 -> single queue */ 1387 if ((chp_dsc->chpp & 0x02) == 0x02) 1388 qeth_set_single_write_queues(card); 1389 else 1390 qeth_set_multiple_write_queues(card); 1391 out: 1392 kfree(chp_dsc); 1393 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1394 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1395 } 1396 1397 static void qeth_init_qdio_info(struct qeth_card *card) 1398 { 1399 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1400 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1401 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1402 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1403 card->qdio.no_out_queues = QETH_MAX_QUEUES; 1404 1405 /* inbound */ 1406 card->qdio.no_in_queues = 1; 1407 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1408 if (card->info.type == QETH_CARD_TYPE_IQD) 1409 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1410 else 1411 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1412 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1413 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1414 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1415 } 1416 1417 static void qeth_set_initial_options(struct qeth_card *card) 1418 { 1419 card->options.route4.type = NO_ROUTER; 1420 card->options.route6.type = NO_ROUTER; 1421 card->options.rx_sg_cb = QETH_RX_SG_CB; 1422 card->options.isolation = ISOLATION_MODE_NONE; 1423 card->options.cq = QETH_CQ_DISABLED; 1424 } 1425 1426 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1427 { 1428 unsigned long flags; 1429 int rc = 0; 1430 1431 spin_lock_irqsave(&card->thread_mask_lock, flags); 1432 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1433 (u8) card->thread_start_mask, 1434 (u8) card->thread_allowed_mask, 1435 (u8) card->thread_running_mask); 1436 rc = (card->thread_start_mask & thread); 1437 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1438 return rc; 1439 } 1440 1441 static void qeth_start_kernel_thread(struct work_struct *work) 1442 { 1443 struct task_struct *ts; 1444 struct qeth_card *card = container_of(work, struct qeth_card, 1445 kernel_thread_starter); 1446 QETH_CARD_TEXT(card , 2, "strthrd"); 1447 1448 if (card->read.state != CH_STATE_UP && 1449 card->write.state != CH_STATE_UP) 1450 return; 1451 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1452 ts = kthread_run(card->discipline->recover, (void *)card, 1453 "qeth_recover"); 1454 if (IS_ERR(ts)) { 1455 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1456 qeth_clear_thread_running_bit(card, 1457 QETH_RECOVER_THREAD); 1458 } 1459 } 1460 } 1461 1462 static void qeth_buffer_reclaim_work(struct work_struct *); 1463 static void qeth_setup_card(struct qeth_card *card) 1464 { 1465 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1466 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1467 1468 card->info.type = CARD_RDEV(card)->id.driver_info; 1469 card->state = CARD_STATE_DOWN; 1470 spin_lock_init(&card->mclock); 1471 spin_lock_init(&card->lock); 1472 spin_lock_init(&card->ip_lock); 1473 spin_lock_init(&card->thread_mask_lock); 1474 mutex_init(&card->conf_mutex); 1475 mutex_init(&card->discipline_mutex); 1476 mutex_init(&card->vid_list_mutex); 1477 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1478 INIT_LIST_HEAD(&card->cmd_waiter_list); 1479 init_waitqueue_head(&card->wait_q); 1480 qeth_set_initial_options(card); 1481 /* IP address takeover */ 1482 INIT_LIST_HEAD(&card->ipato.entries); 1483 qeth_init_qdio_info(card); 1484 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1485 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1486 } 1487 1488 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1489 { 1490 struct qeth_card *card = container_of(slr, struct qeth_card, 1491 qeth_service_level); 1492 if (card->info.mcl_level[0]) 1493 seq_printf(m, "qeth: %s firmware level %s\n", 1494 CARD_BUS_ID(card), card->info.mcl_level); 1495 } 1496 1497 static struct qeth_card *qeth_alloc_card(void) 1498 { 1499 struct qeth_card *card; 1500 1501 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1502 card = kzalloc(sizeof(*card), GFP_KERNEL); 1503 if (!card) 1504 goto out; 1505 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1506 if (qeth_setup_channel(&card->read, true)) 1507 goto out_ip; 1508 if (qeth_setup_channel(&card->write, true)) 1509 goto out_channel; 1510 if (qeth_setup_channel(&card->data, false)) 1511 goto out_data; 1512 card->options.layer2 = -1; 1513 card->qeth_service_level.seq_print = qeth_core_sl_print; 1514 register_service_level(&card->qeth_service_level); 1515 return card; 1516 1517 out_data: 1518 qeth_clean_channel(&card->write); 1519 out_channel: 1520 qeth_clean_channel(&card->read); 1521 out_ip: 1522 kfree(card); 1523 out: 1524 return NULL; 1525 } 1526 1527 static int qeth_clear_channel(struct qeth_channel *channel) 1528 { 1529 unsigned long flags; 1530 struct qeth_card *card; 1531 int rc; 1532 1533 card = CARD_FROM_CDEV(channel->ccwdev); 1534 QETH_CARD_TEXT(card, 3, "clearch"); 1535 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1536 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1537 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1538 1539 if (rc) 1540 return rc; 1541 rc = wait_event_interruptible_timeout(card->wait_q, 1542 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1543 if (rc == -ERESTARTSYS) 1544 return rc; 1545 if (channel->state != CH_STATE_STOPPED) 1546 return -ETIME; 1547 channel->state = CH_STATE_DOWN; 1548 return 0; 1549 } 1550 1551 static int qeth_halt_channel(struct qeth_channel *channel) 1552 { 1553 unsigned long flags; 1554 struct qeth_card *card; 1555 int rc; 1556 1557 card = CARD_FROM_CDEV(channel->ccwdev); 1558 QETH_CARD_TEXT(card, 3, "haltch"); 1559 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1560 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1561 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1562 1563 if (rc) 1564 return rc; 1565 rc = wait_event_interruptible_timeout(card->wait_q, 1566 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1567 if (rc == -ERESTARTSYS) 1568 return rc; 1569 if (channel->state != CH_STATE_HALTED) 1570 return -ETIME; 1571 return 0; 1572 } 1573 1574 static int qeth_halt_channels(struct qeth_card *card) 1575 { 1576 int rc1 = 0, rc2 = 0, rc3 = 0; 1577 1578 QETH_CARD_TEXT(card, 3, "haltchs"); 1579 rc1 = qeth_halt_channel(&card->read); 1580 rc2 = qeth_halt_channel(&card->write); 1581 rc3 = qeth_halt_channel(&card->data); 1582 if (rc1) 1583 return rc1; 1584 if (rc2) 1585 return rc2; 1586 return rc3; 1587 } 1588 1589 static int qeth_clear_channels(struct qeth_card *card) 1590 { 1591 int rc1 = 0, rc2 = 0, rc3 = 0; 1592 1593 QETH_CARD_TEXT(card, 3, "clearchs"); 1594 rc1 = qeth_clear_channel(&card->read); 1595 rc2 = qeth_clear_channel(&card->write); 1596 rc3 = qeth_clear_channel(&card->data); 1597 if (rc1) 1598 return rc1; 1599 if (rc2) 1600 return rc2; 1601 return rc3; 1602 } 1603 1604 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1605 { 1606 int rc = 0; 1607 1608 QETH_CARD_TEXT(card, 3, "clhacrd"); 1609 1610 if (halt) 1611 rc = qeth_halt_channels(card); 1612 if (rc) 1613 return rc; 1614 return qeth_clear_channels(card); 1615 } 1616 1617 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1618 { 1619 int rc = 0; 1620 1621 QETH_CARD_TEXT(card, 3, "qdioclr"); 1622 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1623 QETH_QDIO_CLEANING)) { 1624 case QETH_QDIO_ESTABLISHED: 1625 if (card->info.type == QETH_CARD_TYPE_IQD) 1626 rc = qdio_shutdown(CARD_DDEV(card), 1627 QDIO_FLAG_CLEANUP_USING_HALT); 1628 else 1629 rc = qdio_shutdown(CARD_DDEV(card), 1630 QDIO_FLAG_CLEANUP_USING_CLEAR); 1631 if (rc) 1632 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1633 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1634 break; 1635 case QETH_QDIO_CLEANING: 1636 return rc; 1637 default: 1638 break; 1639 } 1640 rc = qeth_clear_halt_card(card, use_halt); 1641 if (rc) 1642 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1643 card->state = CARD_STATE_DOWN; 1644 return rc; 1645 } 1646 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1647 1648 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1649 int *length) 1650 { 1651 struct ciw *ciw; 1652 char *rcd_buf; 1653 int ret; 1654 struct qeth_channel *channel = &card->data; 1655 unsigned long flags; 1656 1657 /* 1658 * scan for RCD command in extended SenseID data 1659 */ 1660 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1661 if (!ciw || ciw->cmd == 0) 1662 return -EOPNOTSUPP; 1663 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1664 if (!rcd_buf) 1665 return -ENOMEM; 1666 1667 qeth_setup_ccw(channel->ccw, ciw->cmd, ciw->count, rcd_buf); 1668 channel->state = CH_STATE_RCD; 1669 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1670 ret = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1671 QETH_RCD_PARM, LPM_ANYPATH, 0, 1672 QETH_RCD_TIMEOUT); 1673 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1674 if (!ret) 1675 wait_event(card->wait_q, 1676 (channel->state == CH_STATE_RCD_DONE || 1677 channel->state == CH_STATE_DOWN)); 1678 if (channel->state == CH_STATE_DOWN) 1679 ret = -EIO; 1680 else 1681 channel->state = CH_STATE_DOWN; 1682 if (ret) { 1683 kfree(rcd_buf); 1684 *buffer = NULL; 1685 *length = 0; 1686 } else { 1687 *length = ciw->count; 1688 *buffer = rcd_buf; 1689 } 1690 return ret; 1691 } 1692 1693 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1694 { 1695 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1696 card->info.chpid = prcd[30]; 1697 card->info.unit_addr2 = prcd[31]; 1698 card->info.cula = prcd[63]; 1699 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1700 (prcd[0x11] == _ascebc['M'])); 1701 } 1702 1703 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1704 { 1705 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1706 struct diag26c_vnic_resp *response = NULL; 1707 struct diag26c_vnic_req *request = NULL; 1708 struct ccw_dev_id id; 1709 char userid[80]; 1710 int rc = 0; 1711 1712 QETH_DBF_TEXT(SETUP, 2, "vmlayer"); 1713 1714 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1715 if (rc) 1716 goto out; 1717 1718 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1719 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1720 if (!request || !response) { 1721 rc = -ENOMEM; 1722 goto out; 1723 } 1724 1725 ccw_device_get_id(CARD_RDEV(card), &id); 1726 request->resp_buf_len = sizeof(*response); 1727 request->resp_version = DIAG26C_VERSION6_VM65918; 1728 request->req_format = DIAG26C_VNIC_INFO; 1729 ASCEBC(userid, 8); 1730 memcpy(&request->sys_name, userid, 8); 1731 request->devno = id.devno; 1732 1733 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1734 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1735 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1736 if (rc) 1737 goto out; 1738 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1739 1740 if (request->resp_buf_len < sizeof(*response) || 1741 response->version != request->resp_version) { 1742 rc = -EIO; 1743 goto out; 1744 } 1745 1746 if (response->protocol == VNIC_INFO_PROT_L2) 1747 disc = QETH_DISCIPLINE_LAYER2; 1748 else if (response->protocol == VNIC_INFO_PROT_L3) 1749 disc = QETH_DISCIPLINE_LAYER3; 1750 1751 out: 1752 kfree(response); 1753 kfree(request); 1754 if (rc) 1755 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc); 1756 return disc; 1757 } 1758 1759 /* Determine whether the device requires a specific layer discipline */ 1760 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1761 { 1762 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1763 1764 if (card->info.type == QETH_CARD_TYPE_OSM || 1765 card->info.type == QETH_CARD_TYPE_OSN) 1766 disc = QETH_DISCIPLINE_LAYER2; 1767 else if (card->info.guestlan) 1768 disc = (card->info.type == QETH_CARD_TYPE_IQD) ? 1769 QETH_DISCIPLINE_LAYER3 : 1770 qeth_vm_detect_layer(card); 1771 1772 switch (disc) { 1773 case QETH_DISCIPLINE_LAYER2: 1774 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1775 break; 1776 case QETH_DISCIPLINE_LAYER3: 1777 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1778 break; 1779 default: 1780 QETH_DBF_TEXT(SETUP, 3, "force no"); 1781 } 1782 1783 return disc; 1784 } 1785 1786 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1787 { 1788 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1789 1790 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1791 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1792 card->info.blkt.time_total = 0; 1793 card->info.blkt.inter_packet = 0; 1794 card->info.blkt.inter_packet_jumbo = 0; 1795 } else { 1796 card->info.blkt.time_total = 250; 1797 card->info.blkt.inter_packet = 5; 1798 card->info.blkt.inter_packet_jumbo = 15; 1799 } 1800 } 1801 1802 static void qeth_init_tokens(struct qeth_card *card) 1803 { 1804 card->token.issuer_rm_w = 0x00010103UL; 1805 card->token.cm_filter_w = 0x00010108UL; 1806 card->token.cm_connection_w = 0x0001010aUL; 1807 card->token.ulp_filter_w = 0x0001010bUL; 1808 card->token.ulp_connection_w = 0x0001010dUL; 1809 } 1810 1811 static void qeth_init_func_level(struct qeth_card *card) 1812 { 1813 switch (card->info.type) { 1814 case QETH_CARD_TYPE_IQD: 1815 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1816 break; 1817 case QETH_CARD_TYPE_OSD: 1818 case QETH_CARD_TYPE_OSN: 1819 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1820 break; 1821 default: 1822 break; 1823 } 1824 } 1825 1826 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1827 void (*idx_reply_cb)(struct qeth_channel *, 1828 struct qeth_cmd_buffer *)) 1829 { 1830 struct qeth_cmd_buffer *iob; 1831 unsigned long flags; 1832 int rc; 1833 struct qeth_card *card; 1834 1835 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1836 card = CARD_FROM_CDEV(channel->ccwdev); 1837 iob = qeth_get_buffer(channel); 1838 if (!iob) 1839 return -ENOMEM; 1840 iob->callback = idx_reply_cb; 1841 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data); 1842 1843 wait_event(card->wait_q, 1844 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1845 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1846 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1847 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1848 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1849 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1850 1851 if (rc) { 1852 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1853 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1854 atomic_set(&channel->irq_pending, 0); 1855 wake_up(&card->wait_q); 1856 return rc; 1857 } 1858 rc = wait_event_interruptible_timeout(card->wait_q, 1859 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1860 if (rc == -ERESTARTSYS) 1861 return rc; 1862 if (channel->state != CH_STATE_UP) { 1863 rc = -ETIME; 1864 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1865 } else 1866 rc = 0; 1867 return rc; 1868 } 1869 1870 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1871 void (*idx_reply_cb)(struct qeth_channel *, 1872 struct qeth_cmd_buffer *)) 1873 { 1874 struct qeth_card *card; 1875 struct qeth_cmd_buffer *iob; 1876 unsigned long flags; 1877 __u16 temp; 1878 __u8 tmp; 1879 int rc; 1880 struct ccw_dev_id temp_devid; 1881 1882 card = CARD_FROM_CDEV(channel->ccwdev); 1883 1884 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1885 1886 iob = qeth_get_buffer(channel); 1887 if (!iob) 1888 return -ENOMEM; 1889 iob->callback = idx_reply_cb; 1890 qeth_setup_ccw(channel->ccw, CCW_CMD_WRITE, IDX_ACTIVATE_SIZE, 1891 iob->data); 1892 if (channel == &card->write) { 1893 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1894 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1895 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1896 card->seqno.trans_hdr++; 1897 } else { 1898 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1899 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1900 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1901 } 1902 tmp = ((u8)card->dev->dev_port) | 0x80; 1903 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1904 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1905 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1906 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1907 &card->info.func_level, sizeof(__u16)); 1908 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1909 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1910 temp = (card->info.cula << 8) + card->info.unit_addr2; 1911 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1912 1913 wait_event(card->wait_q, 1914 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1915 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1916 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1917 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1918 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1919 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1920 1921 if (rc) { 1922 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1923 rc); 1924 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1925 atomic_set(&channel->irq_pending, 0); 1926 wake_up(&card->wait_q); 1927 return rc; 1928 } 1929 rc = wait_event_interruptible_timeout(card->wait_q, 1930 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1931 if (rc == -ERESTARTSYS) 1932 return rc; 1933 if (channel->state != CH_STATE_ACTIVATING) { 1934 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1935 " failed to recover an error on the device\n"); 1936 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1937 dev_name(&channel->ccwdev->dev)); 1938 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1939 return -ETIME; 1940 } 1941 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1942 } 1943 1944 static int qeth_peer_func_level(int level) 1945 { 1946 if ((level & 0xff) == 8) 1947 return (level & 0xff) + 0x400; 1948 if (((level >> 8) & 3) == 1) 1949 return (level & 0xff) + 0x200; 1950 return level; 1951 } 1952 1953 static void qeth_idx_write_cb(struct qeth_channel *channel, 1954 struct qeth_cmd_buffer *iob) 1955 { 1956 struct qeth_card *card; 1957 __u16 temp; 1958 1959 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1960 1961 if (channel->state == CH_STATE_DOWN) { 1962 channel->state = CH_STATE_ACTIVATING; 1963 goto out; 1964 } 1965 card = CARD_FROM_CDEV(channel->ccwdev); 1966 1967 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1968 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1969 dev_err(&channel->ccwdev->dev, 1970 "The adapter is used exclusively by another " 1971 "host\n"); 1972 else 1973 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1974 " negative reply\n", 1975 dev_name(&channel->ccwdev->dev)); 1976 goto out; 1977 } 1978 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1979 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1980 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1981 "function level mismatch (sent: 0x%x, received: " 1982 "0x%x)\n", dev_name(&channel->ccwdev->dev), 1983 card->info.func_level, temp); 1984 goto out; 1985 } 1986 channel->state = CH_STATE_UP; 1987 out: 1988 qeth_release_buffer(channel, iob); 1989 } 1990 1991 static void qeth_idx_read_cb(struct qeth_channel *channel, 1992 struct qeth_cmd_buffer *iob) 1993 { 1994 struct qeth_card *card; 1995 __u16 temp; 1996 1997 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1998 if (channel->state == CH_STATE_DOWN) { 1999 channel->state = CH_STATE_ACTIVATING; 2000 goto out; 2001 } 2002 2003 card = CARD_FROM_CDEV(channel->ccwdev); 2004 if (qeth_check_idx_response(card, iob->data)) 2005 goto out; 2006 2007 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 2008 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 2009 case QETH_IDX_ACT_ERR_EXCL: 2010 dev_err(&channel->ccwdev->dev, 2011 "The adapter is used exclusively by another " 2012 "host\n"); 2013 break; 2014 case QETH_IDX_ACT_ERR_AUTH: 2015 case QETH_IDX_ACT_ERR_AUTH_USER: 2016 dev_err(&channel->ccwdev->dev, 2017 "Setting the device online failed because of " 2018 "insufficient authorization\n"); 2019 break; 2020 default: 2021 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 2022 " negative reply\n", 2023 dev_name(&channel->ccwdev->dev)); 2024 } 2025 QETH_CARD_TEXT_(card, 2, "idxread%c", 2026 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 2027 goto out; 2028 } 2029 2030 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2031 if (temp != qeth_peer_func_level(card->info.func_level)) { 2032 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 2033 "level mismatch (sent: 0x%x, received: 0x%x)\n", 2034 dev_name(&channel->ccwdev->dev), 2035 card->info.func_level, temp); 2036 goto out; 2037 } 2038 memcpy(&card->token.issuer_rm_r, 2039 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2040 QETH_MPC_TOKEN_LENGTH); 2041 memcpy(&card->info.mcl_level[0], 2042 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2043 channel->state = CH_STATE_UP; 2044 out: 2045 qeth_release_buffer(channel, iob); 2046 } 2047 2048 void qeth_prepare_control_data(struct qeth_card *card, int len, 2049 struct qeth_cmd_buffer *iob) 2050 { 2051 qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, len, iob->data); 2052 iob->callback = qeth_release_buffer; 2053 2054 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2055 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2056 card->seqno.trans_hdr++; 2057 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2058 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2059 card->seqno.pdu_hdr++; 2060 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2061 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2062 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2063 } 2064 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2065 2066 /** 2067 * qeth_send_control_data() - send control command to the card 2068 * @card: qeth_card structure pointer 2069 * @len: size of the command buffer 2070 * @iob: qeth_cmd_buffer pointer 2071 * @reply_cb: callback function pointer 2072 * @cb_card: pointer to the qeth_card structure 2073 * @cb_reply: pointer to the qeth_reply structure 2074 * @cb_cmd: pointer to the original iob for non-IPA 2075 * commands, or to the qeth_ipa_cmd structure 2076 * for the IPA commands. 2077 * @reply_param: private pointer passed to the callback 2078 * 2079 * Returns the value of the `return_code' field of the response 2080 * block returned from the hardware, or other error indication. 2081 * Value of zero indicates successful execution of the command. 2082 * 2083 * Callback function gets called one or more times, with cb_cmd 2084 * pointing to the response returned by the hardware. Callback 2085 * function must return non-zero if more reply blocks are expected, 2086 * and zero if the last or only reply block is received. Callback 2087 * function can get the value of the reply_param pointer from the 2088 * field 'param' of the structure qeth_reply. 2089 */ 2090 2091 int qeth_send_control_data(struct qeth_card *card, int len, 2092 struct qeth_cmd_buffer *iob, 2093 int (*reply_cb)(struct qeth_card *cb_card, 2094 struct qeth_reply *cb_reply, 2095 unsigned long cb_cmd), 2096 void *reply_param) 2097 { 2098 struct qeth_channel *channel = iob->channel; 2099 int rc; 2100 unsigned long flags; 2101 struct qeth_reply *reply = NULL; 2102 unsigned long timeout, event_timeout; 2103 struct qeth_ipa_cmd *cmd = NULL; 2104 2105 QETH_CARD_TEXT(card, 2, "sendctl"); 2106 2107 if (card->read_or_write_problem) { 2108 qeth_release_buffer(channel, iob); 2109 return -EIO; 2110 } 2111 reply = qeth_alloc_reply(card); 2112 if (!reply) { 2113 return -ENOMEM; 2114 } 2115 reply->callback = reply_cb; 2116 reply->param = reply_param; 2117 2118 init_waitqueue_head(&reply->wait_q); 2119 2120 while (atomic_cmpxchg(&channel->irq_pending, 0, 1)) ; 2121 2122 if (IS_IPA(iob->data)) { 2123 cmd = __ipa_cmd(iob); 2124 cmd->hdr.seqno = card->seqno.ipa++; 2125 reply->seqno = cmd->hdr.seqno; 2126 event_timeout = QETH_IPA_TIMEOUT; 2127 } else { 2128 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2129 event_timeout = QETH_TIMEOUT; 2130 } 2131 qeth_prepare_control_data(card, len, iob); 2132 2133 spin_lock_irqsave(&card->lock, flags); 2134 list_add_tail(&reply->list, &card->cmd_waiter_list); 2135 spin_unlock_irqrestore(&card->lock, flags); 2136 2137 timeout = jiffies + event_timeout; 2138 2139 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2140 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 2141 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 2142 (addr_t) iob, 0, 0, event_timeout); 2143 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 2144 if (rc) { 2145 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2146 "ccw_device_start rc = %i\n", 2147 dev_name(&channel->ccwdev->dev), rc); 2148 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2149 spin_lock_irqsave(&card->lock, flags); 2150 list_del_init(&reply->list); 2151 qeth_put_reply(reply); 2152 spin_unlock_irqrestore(&card->lock, flags); 2153 qeth_release_buffer(channel, iob); 2154 atomic_set(&channel->irq_pending, 0); 2155 wake_up(&card->wait_q); 2156 return rc; 2157 } 2158 2159 /* we have only one long running ipassist, since we can ensure 2160 process context of this command we can sleep */ 2161 if (cmd && cmd->hdr.command == IPA_CMD_SETIP && 2162 cmd->hdr.prot_version == QETH_PROT_IPV4) { 2163 if (!wait_event_timeout(reply->wait_q, 2164 atomic_read(&reply->received), event_timeout)) 2165 goto time_err; 2166 } else { 2167 while (!atomic_read(&reply->received)) { 2168 if (time_after(jiffies, timeout)) 2169 goto time_err; 2170 cpu_relax(); 2171 } 2172 } 2173 2174 rc = reply->rc; 2175 qeth_put_reply(reply); 2176 return rc; 2177 2178 time_err: 2179 reply->rc = -ETIME; 2180 spin_lock_irqsave(&reply->card->lock, flags); 2181 list_del_init(&reply->list); 2182 spin_unlock_irqrestore(&reply->card->lock, flags); 2183 atomic_inc(&reply->received); 2184 rc = reply->rc; 2185 qeth_put_reply(reply); 2186 return rc; 2187 } 2188 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2189 2190 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2191 unsigned long data) 2192 { 2193 struct qeth_cmd_buffer *iob; 2194 2195 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2196 2197 iob = (struct qeth_cmd_buffer *) data; 2198 memcpy(&card->token.cm_filter_r, 2199 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2200 QETH_MPC_TOKEN_LENGTH); 2201 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2202 return 0; 2203 } 2204 2205 static int qeth_cm_enable(struct qeth_card *card) 2206 { 2207 int rc; 2208 struct qeth_cmd_buffer *iob; 2209 2210 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2211 2212 iob = qeth_wait_for_buffer(&card->write); 2213 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2214 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2215 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2216 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2217 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2218 2219 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2220 qeth_cm_enable_cb, NULL); 2221 return rc; 2222 } 2223 2224 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2225 unsigned long data) 2226 { 2227 2228 struct qeth_cmd_buffer *iob; 2229 2230 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2231 2232 iob = (struct qeth_cmd_buffer *) data; 2233 memcpy(&card->token.cm_connection_r, 2234 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2235 QETH_MPC_TOKEN_LENGTH); 2236 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2237 return 0; 2238 } 2239 2240 static int qeth_cm_setup(struct qeth_card *card) 2241 { 2242 int rc; 2243 struct qeth_cmd_buffer *iob; 2244 2245 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2246 2247 iob = qeth_wait_for_buffer(&card->write); 2248 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2249 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2250 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2251 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2252 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2253 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2254 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2255 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2256 qeth_cm_setup_cb, NULL); 2257 return rc; 2258 2259 } 2260 2261 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu) 2262 { 2263 struct net_device *dev = card->dev; 2264 unsigned int new_mtu; 2265 2266 if (!max_mtu) { 2267 /* IQD needs accurate max MTU to set up its RX buffers: */ 2268 if (IS_IQD(card)) 2269 return -EINVAL; 2270 /* tolerate quirky HW: */ 2271 max_mtu = ETH_MAX_MTU; 2272 } 2273 2274 rtnl_lock(); 2275 if (IS_IQD(card)) { 2276 /* move any device with default MTU to new max MTU: */ 2277 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu; 2278 2279 /* adjust RX buffer size to new max MTU: */ 2280 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE; 2281 if (dev->max_mtu && dev->max_mtu != max_mtu) 2282 qeth_free_qdio_buffers(card); 2283 } else { 2284 if (dev->mtu) 2285 new_mtu = dev->mtu; 2286 /* default MTUs for first setup: */ 2287 else if (card->options.layer2) 2288 new_mtu = ETH_DATA_LEN; 2289 else 2290 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */ 2291 } 2292 2293 dev->max_mtu = max_mtu; 2294 dev->mtu = min(new_mtu, max_mtu); 2295 rtnl_unlock(); 2296 return 0; 2297 } 2298 2299 static int qeth_get_mtu_outof_framesize(int framesize) 2300 { 2301 switch (framesize) { 2302 case 0x4000: 2303 return 8192; 2304 case 0x6000: 2305 return 16384; 2306 case 0xa000: 2307 return 32768; 2308 case 0xffff: 2309 return 57344; 2310 default: 2311 return 0; 2312 } 2313 } 2314 2315 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2316 unsigned long data) 2317 { 2318 2319 __u16 mtu, framesize; 2320 __u16 len; 2321 __u8 link_type; 2322 struct qeth_cmd_buffer *iob; 2323 2324 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2325 2326 iob = (struct qeth_cmd_buffer *) data; 2327 memcpy(&card->token.ulp_filter_r, 2328 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2329 QETH_MPC_TOKEN_LENGTH); 2330 if (card->info.type == QETH_CARD_TYPE_IQD) { 2331 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2332 mtu = qeth_get_mtu_outof_framesize(framesize); 2333 } else { 2334 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data); 2335 } 2336 *(u16 *)reply->param = mtu; 2337 2338 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2339 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2340 memcpy(&link_type, 2341 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2342 card->info.link_type = link_type; 2343 } else 2344 card->info.link_type = 0; 2345 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2346 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2347 return 0; 2348 } 2349 2350 static u8 qeth_mpc_select_prot_type(struct qeth_card *card) 2351 { 2352 if (IS_OSN(card)) 2353 return QETH_PROT_OSN2; 2354 return (card->options.layer2 == 1) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP; 2355 } 2356 2357 static int qeth_ulp_enable(struct qeth_card *card) 2358 { 2359 u8 prot_type = qeth_mpc_select_prot_type(card); 2360 struct qeth_cmd_buffer *iob; 2361 u16 max_mtu; 2362 int rc; 2363 2364 /*FIXME: trace view callbacks*/ 2365 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2366 2367 iob = qeth_wait_for_buffer(&card->write); 2368 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2369 2370 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port; 2371 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2372 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2373 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2374 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2375 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2376 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2377 qeth_ulp_enable_cb, &max_mtu); 2378 if (rc) 2379 return rc; 2380 return qeth_update_max_mtu(card, max_mtu); 2381 } 2382 2383 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2384 unsigned long data) 2385 { 2386 struct qeth_cmd_buffer *iob; 2387 2388 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2389 2390 iob = (struct qeth_cmd_buffer *) data; 2391 memcpy(&card->token.ulp_connection_r, 2392 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2393 QETH_MPC_TOKEN_LENGTH); 2394 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2395 3)) { 2396 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2397 dev_err(&card->gdev->dev, "A connection could not be " 2398 "established because of an OLM limit\n"); 2399 iob->rc = -EMLINK; 2400 } 2401 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2402 return 0; 2403 } 2404 2405 static int qeth_ulp_setup(struct qeth_card *card) 2406 { 2407 int rc; 2408 __u16 temp; 2409 struct qeth_cmd_buffer *iob; 2410 struct ccw_dev_id dev_id; 2411 2412 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2413 2414 iob = qeth_wait_for_buffer(&card->write); 2415 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2416 2417 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2418 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2419 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2420 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2421 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2422 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2423 2424 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2425 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2426 temp = (card->info.cula << 8) + card->info.unit_addr2; 2427 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2428 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2429 qeth_ulp_setup_cb, NULL); 2430 return rc; 2431 } 2432 2433 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2434 { 2435 struct qeth_qdio_out_buffer *newbuf; 2436 2437 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2438 if (!newbuf) 2439 return -ENOMEM; 2440 2441 newbuf->buffer = q->qdio_bufs[bidx]; 2442 skb_queue_head_init(&newbuf->skb_list); 2443 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2444 newbuf->q = q; 2445 newbuf->next_pending = q->bufs[bidx]; 2446 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2447 q->bufs[bidx] = newbuf; 2448 return 0; 2449 } 2450 2451 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2452 { 2453 if (!q) 2454 return; 2455 2456 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2457 kfree(q); 2458 } 2459 2460 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2461 { 2462 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2463 2464 if (!q) 2465 return NULL; 2466 2467 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2468 kfree(q); 2469 return NULL; 2470 } 2471 return q; 2472 } 2473 2474 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2475 { 2476 int i, j; 2477 2478 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2479 2480 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2481 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2482 return 0; 2483 2484 QETH_DBF_TEXT(SETUP, 2, "inq"); 2485 card->qdio.in_q = qeth_alloc_qdio_queue(); 2486 if (!card->qdio.in_q) 2487 goto out_nomem; 2488 2489 /* inbound buffer pool */ 2490 if (qeth_alloc_buffer_pool(card)) 2491 goto out_freeinq; 2492 2493 /* outbound */ 2494 card->qdio.out_qs = 2495 kcalloc(card->qdio.no_out_queues, 2496 sizeof(struct qeth_qdio_out_q *), 2497 GFP_KERNEL); 2498 if (!card->qdio.out_qs) 2499 goto out_freepool; 2500 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2501 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2502 if (!card->qdio.out_qs[i]) 2503 goto out_freeoutq; 2504 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2505 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2506 card->qdio.out_qs[i]->queue_no = i; 2507 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2508 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2509 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2510 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2511 goto out_freeoutqbufs; 2512 } 2513 } 2514 2515 /* completion */ 2516 if (qeth_alloc_cq(card)) 2517 goto out_freeoutq; 2518 2519 return 0; 2520 2521 out_freeoutqbufs: 2522 while (j > 0) { 2523 --j; 2524 kmem_cache_free(qeth_qdio_outbuf_cache, 2525 card->qdio.out_qs[i]->bufs[j]); 2526 card->qdio.out_qs[i]->bufs[j] = NULL; 2527 } 2528 out_freeoutq: 2529 while (i > 0) { 2530 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2531 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2532 } 2533 kfree(card->qdio.out_qs); 2534 card->qdio.out_qs = NULL; 2535 out_freepool: 2536 qeth_free_buffer_pool(card); 2537 out_freeinq: 2538 qeth_free_qdio_queue(card->qdio.in_q); 2539 card->qdio.in_q = NULL; 2540 out_nomem: 2541 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2542 return -ENOMEM; 2543 } 2544 2545 static void qeth_free_qdio_buffers(struct qeth_card *card) 2546 { 2547 int i, j; 2548 2549 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2550 QETH_QDIO_UNINITIALIZED) 2551 return; 2552 2553 qeth_free_cq(card); 2554 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2555 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2556 if (card->qdio.in_q->bufs[j].rx_skb) 2557 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2558 } 2559 qeth_free_qdio_queue(card->qdio.in_q); 2560 card->qdio.in_q = NULL; 2561 /* inbound buffer pool */ 2562 qeth_free_buffer_pool(card); 2563 /* free outbound qdio_qs */ 2564 if (card->qdio.out_qs) { 2565 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2566 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2567 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2568 } 2569 kfree(card->qdio.out_qs); 2570 card->qdio.out_qs = NULL; 2571 } 2572 } 2573 2574 static void qeth_create_qib_param_field(struct qeth_card *card, 2575 char *param_field) 2576 { 2577 2578 param_field[0] = _ascebc['P']; 2579 param_field[1] = _ascebc['C']; 2580 param_field[2] = _ascebc['I']; 2581 param_field[3] = _ascebc['T']; 2582 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2583 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2584 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2585 } 2586 2587 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2588 char *param_field) 2589 { 2590 param_field[16] = _ascebc['B']; 2591 param_field[17] = _ascebc['L']; 2592 param_field[18] = _ascebc['K']; 2593 param_field[19] = _ascebc['T']; 2594 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2595 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2596 *((unsigned int *) (¶m_field[28])) = 2597 card->info.blkt.inter_packet_jumbo; 2598 } 2599 2600 static int qeth_qdio_activate(struct qeth_card *card) 2601 { 2602 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2603 return qdio_activate(CARD_DDEV(card)); 2604 } 2605 2606 static int qeth_dm_act(struct qeth_card *card) 2607 { 2608 int rc; 2609 struct qeth_cmd_buffer *iob; 2610 2611 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2612 2613 iob = qeth_wait_for_buffer(&card->write); 2614 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2615 2616 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2617 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2618 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2619 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2620 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2621 return rc; 2622 } 2623 2624 static int qeth_mpc_initialize(struct qeth_card *card) 2625 { 2626 int rc; 2627 2628 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2629 2630 rc = qeth_issue_next_read(card); 2631 if (rc) { 2632 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2633 return rc; 2634 } 2635 rc = qeth_cm_enable(card); 2636 if (rc) { 2637 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2638 goto out_qdio; 2639 } 2640 rc = qeth_cm_setup(card); 2641 if (rc) { 2642 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2643 goto out_qdio; 2644 } 2645 rc = qeth_ulp_enable(card); 2646 if (rc) { 2647 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2648 goto out_qdio; 2649 } 2650 rc = qeth_ulp_setup(card); 2651 if (rc) { 2652 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2653 goto out_qdio; 2654 } 2655 rc = qeth_alloc_qdio_buffers(card); 2656 if (rc) { 2657 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2658 goto out_qdio; 2659 } 2660 rc = qeth_qdio_establish(card); 2661 if (rc) { 2662 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2663 qeth_free_qdio_buffers(card); 2664 goto out_qdio; 2665 } 2666 rc = qeth_qdio_activate(card); 2667 if (rc) { 2668 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2669 goto out_qdio; 2670 } 2671 rc = qeth_dm_act(card); 2672 if (rc) { 2673 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2674 goto out_qdio; 2675 } 2676 2677 return 0; 2678 out_qdio: 2679 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2680 qdio_free(CARD_DDEV(card)); 2681 return rc; 2682 } 2683 2684 void qeth_print_status_message(struct qeth_card *card) 2685 { 2686 switch (card->info.type) { 2687 case QETH_CARD_TYPE_OSD: 2688 case QETH_CARD_TYPE_OSM: 2689 case QETH_CARD_TYPE_OSX: 2690 /* VM will use a non-zero first character 2691 * to indicate a HiperSockets like reporting 2692 * of the level OSA sets the first character to zero 2693 * */ 2694 if (!card->info.mcl_level[0]) { 2695 sprintf(card->info.mcl_level, "%02x%02x", 2696 card->info.mcl_level[2], 2697 card->info.mcl_level[3]); 2698 break; 2699 } 2700 /* fallthrough */ 2701 case QETH_CARD_TYPE_IQD: 2702 if ((card->info.guestlan) || 2703 (card->info.mcl_level[0] & 0x80)) { 2704 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2705 card->info.mcl_level[0]]; 2706 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2707 card->info.mcl_level[1]]; 2708 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2709 card->info.mcl_level[2]]; 2710 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2711 card->info.mcl_level[3]]; 2712 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2713 } 2714 break; 2715 default: 2716 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2717 } 2718 dev_info(&card->gdev->dev, 2719 "Device is a%s card%s%s%s\nwith link type %s.\n", 2720 qeth_get_cardname(card), 2721 (card->info.mcl_level[0]) ? " (level: " : "", 2722 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2723 (card->info.mcl_level[0]) ? ")" : "", 2724 qeth_get_cardname_short(card)); 2725 } 2726 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2727 2728 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2729 { 2730 struct qeth_buffer_pool_entry *entry; 2731 2732 QETH_CARD_TEXT(card, 5, "inwrklst"); 2733 2734 list_for_each_entry(entry, 2735 &card->qdio.init_pool.entry_list, init_list) { 2736 qeth_put_buffer_pool_entry(card, entry); 2737 } 2738 } 2739 2740 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2741 struct qeth_card *card) 2742 { 2743 struct list_head *plh; 2744 struct qeth_buffer_pool_entry *entry; 2745 int i, free; 2746 struct page *page; 2747 2748 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2749 return NULL; 2750 2751 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2752 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2753 free = 1; 2754 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2755 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2756 free = 0; 2757 break; 2758 } 2759 } 2760 if (free) { 2761 list_del_init(&entry->list); 2762 return entry; 2763 } 2764 } 2765 2766 /* no free buffer in pool so take first one and swap pages */ 2767 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2768 struct qeth_buffer_pool_entry, list); 2769 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2770 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2771 page = alloc_page(GFP_ATOMIC); 2772 if (!page) { 2773 return NULL; 2774 } else { 2775 free_page((unsigned long)entry->elements[i]); 2776 entry->elements[i] = page_address(page); 2777 if (card->options.performance_stats) 2778 card->perf_stats.sg_alloc_page_rx++; 2779 } 2780 } 2781 } 2782 list_del_init(&entry->list); 2783 return entry; 2784 } 2785 2786 static int qeth_init_input_buffer(struct qeth_card *card, 2787 struct qeth_qdio_buffer *buf) 2788 { 2789 struct qeth_buffer_pool_entry *pool_entry; 2790 int i; 2791 2792 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2793 buf->rx_skb = netdev_alloc_skb(card->dev, 2794 QETH_RX_PULL_LEN + ETH_HLEN); 2795 if (!buf->rx_skb) 2796 return 1; 2797 } 2798 2799 pool_entry = qeth_find_free_buffer_pool_entry(card); 2800 if (!pool_entry) 2801 return 1; 2802 2803 /* 2804 * since the buffer is accessed only from the input_tasklet 2805 * there shouldn't be a need to synchronize; also, since we use 2806 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2807 * buffers 2808 */ 2809 2810 buf->pool_entry = pool_entry; 2811 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2812 buf->buffer->element[i].length = PAGE_SIZE; 2813 buf->buffer->element[i].addr = pool_entry->elements[i]; 2814 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2815 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2816 else 2817 buf->buffer->element[i].eflags = 0; 2818 buf->buffer->element[i].sflags = 0; 2819 } 2820 return 0; 2821 } 2822 2823 int qeth_init_qdio_queues(struct qeth_card *card) 2824 { 2825 int i, j; 2826 int rc; 2827 2828 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2829 2830 /* inbound queue */ 2831 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2832 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2833 qeth_initialize_working_pool_list(card); 2834 /*give only as many buffers to hardware as we have buffer pool entries*/ 2835 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2836 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2837 card->qdio.in_q->next_buf_to_init = 2838 card->qdio.in_buf_pool.buf_count - 1; 2839 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2840 card->qdio.in_buf_pool.buf_count - 1); 2841 if (rc) { 2842 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2843 return rc; 2844 } 2845 2846 /* completion */ 2847 rc = qeth_cq_init(card); 2848 if (rc) { 2849 return rc; 2850 } 2851 2852 /* outbound queue */ 2853 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2854 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2855 QDIO_MAX_BUFFERS_PER_Q); 2856 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2857 qeth_clear_output_buffer(card->qdio.out_qs[i], 2858 card->qdio.out_qs[i]->bufs[j]); 2859 } 2860 card->qdio.out_qs[i]->card = card; 2861 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2862 card->qdio.out_qs[i]->do_pack = 0; 2863 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2864 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2865 atomic_set(&card->qdio.out_qs[i]->state, 2866 QETH_OUT_Q_UNLOCKED); 2867 } 2868 return 0; 2869 } 2870 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2871 2872 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2873 { 2874 switch (link_type) { 2875 case QETH_LINK_TYPE_HSTR: 2876 return 2; 2877 default: 2878 return 1; 2879 } 2880 } 2881 2882 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2883 struct qeth_ipa_cmd *cmd, __u8 command, 2884 enum qeth_prot_versions prot) 2885 { 2886 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2887 cmd->hdr.command = command; 2888 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2889 /* cmd->hdr.seqno is set by qeth_send_control_data() */ 2890 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2891 cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port; 2892 if (card->options.layer2) 2893 cmd->hdr.prim_version_no = 2; 2894 else 2895 cmd->hdr.prim_version_no = 1; 2896 cmd->hdr.param_count = 1; 2897 cmd->hdr.prot_version = prot; 2898 cmd->hdr.ipa_supported = 0; 2899 cmd->hdr.ipa_enabled = 0; 2900 } 2901 2902 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2903 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2904 { 2905 struct qeth_cmd_buffer *iob; 2906 2907 iob = qeth_get_buffer(&card->write); 2908 if (iob) { 2909 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot); 2910 } else { 2911 dev_warn(&card->gdev->dev, 2912 "The qeth driver ran out of channel command buffers\n"); 2913 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2914 dev_name(&card->gdev->dev)); 2915 } 2916 2917 return iob; 2918 } 2919 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2920 2921 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob) 2922 { 2923 u8 prot_type = qeth_mpc_select_prot_type(card); 2924 2925 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2926 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2927 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2928 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2929 } 2930 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2931 2932 /** 2933 * qeth_send_ipa_cmd() - send an IPA command 2934 * 2935 * See qeth_send_control_data() for explanation of the arguments. 2936 */ 2937 2938 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2939 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2940 unsigned long), 2941 void *reply_param) 2942 { 2943 int rc; 2944 2945 QETH_CARD_TEXT(card, 4, "sendipa"); 2946 qeth_prepare_ipa_cmd(card, iob); 2947 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2948 iob, reply_cb, reply_param); 2949 if (rc == -ETIME) { 2950 qeth_clear_ipacmd_list(card); 2951 qeth_schedule_recovery(card); 2952 } 2953 return rc; 2954 } 2955 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2956 2957 static int qeth_send_startlan(struct qeth_card *card) 2958 { 2959 int rc; 2960 struct qeth_cmd_buffer *iob; 2961 2962 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2963 2964 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2965 if (!iob) 2966 return -ENOMEM; 2967 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2968 return rc; 2969 } 2970 2971 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 2972 { 2973 if (!cmd->hdr.return_code) 2974 cmd->hdr.return_code = 2975 cmd->data.setadapterparms.hdr.return_code; 2976 return cmd->hdr.return_code; 2977 } 2978 2979 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2980 struct qeth_reply *reply, unsigned long data) 2981 { 2982 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2983 2984 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2985 if (qeth_setadpparms_inspect_rc(cmd)) 2986 return 0; 2987 2988 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2989 card->info.link_type = 2990 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2991 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2992 } 2993 card->options.adp.supported_funcs = 2994 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2995 return 0; 2996 } 2997 2998 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2999 __u32 command, __u32 cmdlen) 3000 { 3001 struct qeth_cmd_buffer *iob; 3002 struct qeth_ipa_cmd *cmd; 3003 3004 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3005 QETH_PROT_IPV4); 3006 if (iob) { 3007 cmd = __ipa_cmd(iob); 3008 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3009 cmd->data.setadapterparms.hdr.command_code = command; 3010 cmd->data.setadapterparms.hdr.used_total = 1; 3011 cmd->data.setadapterparms.hdr.seq_no = 1; 3012 } 3013 3014 return iob; 3015 } 3016 3017 static int qeth_query_setadapterparms(struct qeth_card *card) 3018 { 3019 int rc; 3020 struct qeth_cmd_buffer *iob; 3021 3022 QETH_CARD_TEXT(card, 3, "queryadp"); 3023 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3024 sizeof(struct qeth_ipacmd_setadpparms)); 3025 if (!iob) 3026 return -ENOMEM; 3027 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3028 return rc; 3029 } 3030 3031 static int qeth_query_ipassists_cb(struct qeth_card *card, 3032 struct qeth_reply *reply, unsigned long data) 3033 { 3034 struct qeth_ipa_cmd *cmd; 3035 3036 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3037 3038 cmd = (struct qeth_ipa_cmd *) data; 3039 3040 switch (cmd->hdr.return_code) { 3041 case IPA_RC_NOTSUPP: 3042 case IPA_RC_L2_UNSUPPORTED_CMD: 3043 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3044 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3045 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3046 return -0; 3047 default: 3048 if (cmd->hdr.return_code) { 3049 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3050 "rc=%d\n", 3051 dev_name(&card->gdev->dev), 3052 cmd->hdr.return_code); 3053 return 0; 3054 } 3055 } 3056 3057 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3058 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3059 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3060 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3061 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3062 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3063 } else 3064 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3065 "\n", dev_name(&card->gdev->dev)); 3066 return 0; 3067 } 3068 3069 static int qeth_query_ipassists(struct qeth_card *card, 3070 enum qeth_prot_versions prot) 3071 { 3072 int rc; 3073 struct qeth_cmd_buffer *iob; 3074 3075 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3076 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3077 if (!iob) 3078 return -ENOMEM; 3079 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3080 return rc; 3081 } 3082 3083 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3084 struct qeth_reply *reply, unsigned long data) 3085 { 3086 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3087 struct qeth_query_switch_attributes *attrs; 3088 struct qeth_switch_info *sw_info; 3089 3090 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3091 if (qeth_setadpparms_inspect_rc(cmd)) 3092 return 0; 3093 3094 sw_info = (struct qeth_switch_info *)reply->param; 3095 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3096 sw_info->capabilities = attrs->capabilities; 3097 sw_info->settings = attrs->settings; 3098 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3099 sw_info->settings); 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 3121 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3122 struct qeth_reply *reply, unsigned long data) 3123 { 3124 struct qeth_ipa_cmd *cmd; 3125 __u16 rc; 3126 3127 cmd = (struct qeth_ipa_cmd *)data; 3128 rc = cmd->hdr.return_code; 3129 if (rc) 3130 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3131 else 3132 card->info.diagass_support = cmd->data.diagass.ext; 3133 return 0; 3134 } 3135 3136 static int qeth_query_setdiagass(struct qeth_card *card) 3137 { 3138 struct qeth_cmd_buffer *iob; 3139 struct qeth_ipa_cmd *cmd; 3140 3141 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3142 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3143 if (!iob) 3144 return -ENOMEM; 3145 cmd = __ipa_cmd(iob); 3146 cmd->data.diagass.subcmd_len = 16; 3147 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3148 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3149 } 3150 3151 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3152 { 3153 unsigned long info = get_zeroed_page(GFP_KERNEL); 3154 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3155 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3156 struct ccw_dev_id ccwid; 3157 int level; 3158 3159 tid->chpid = card->info.chpid; 3160 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3161 tid->ssid = ccwid.ssid; 3162 tid->devno = ccwid.devno; 3163 if (!info) 3164 return; 3165 level = stsi(NULL, 0, 0, 0); 3166 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3167 tid->lparnr = info222->lpar_number; 3168 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3169 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3170 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3171 } 3172 free_page(info); 3173 return; 3174 } 3175 3176 static int qeth_hw_trap_cb(struct qeth_card *card, 3177 struct qeth_reply *reply, unsigned long data) 3178 { 3179 struct qeth_ipa_cmd *cmd; 3180 __u16 rc; 3181 3182 cmd = (struct qeth_ipa_cmd *)data; 3183 rc = cmd->hdr.return_code; 3184 if (rc) 3185 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3186 return 0; 3187 } 3188 3189 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3190 { 3191 struct qeth_cmd_buffer *iob; 3192 struct qeth_ipa_cmd *cmd; 3193 3194 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3195 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3196 if (!iob) 3197 return -ENOMEM; 3198 cmd = __ipa_cmd(iob); 3199 cmd->data.diagass.subcmd_len = 80; 3200 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3201 cmd->data.diagass.type = 1; 3202 cmd->data.diagass.action = action; 3203 switch (action) { 3204 case QETH_DIAGS_TRAP_ARM: 3205 cmd->data.diagass.options = 0x0003; 3206 cmd->data.diagass.ext = 0x00010000 + 3207 sizeof(struct qeth_trap_id); 3208 qeth_get_trap_id(card, 3209 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3210 break; 3211 case QETH_DIAGS_TRAP_DISARM: 3212 cmd->data.diagass.options = 0x0001; 3213 break; 3214 case QETH_DIAGS_TRAP_CAPTURE: 3215 break; 3216 } 3217 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3218 } 3219 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3220 3221 static int qeth_check_qdio_errors(struct qeth_card *card, 3222 struct qdio_buffer *buf, 3223 unsigned int qdio_error, 3224 const char *dbftext) 3225 { 3226 if (qdio_error) { 3227 QETH_CARD_TEXT(card, 2, dbftext); 3228 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3229 buf->element[15].sflags); 3230 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3231 buf->element[14].sflags); 3232 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3233 if ((buf->element[15].sflags) == 0x12) { 3234 card->stats.rx_dropped++; 3235 return 0; 3236 } else 3237 return 1; 3238 } 3239 return 0; 3240 } 3241 3242 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3243 { 3244 struct qeth_qdio_q *queue = card->qdio.in_q; 3245 struct list_head *lh; 3246 int count; 3247 int i; 3248 int rc; 3249 int newcount = 0; 3250 3251 count = (index < queue->next_buf_to_init)? 3252 card->qdio.in_buf_pool.buf_count - 3253 (queue->next_buf_to_init - index) : 3254 card->qdio.in_buf_pool.buf_count - 3255 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3256 /* only requeue at a certain threshold to avoid SIGAs */ 3257 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3258 for (i = queue->next_buf_to_init; 3259 i < queue->next_buf_to_init + count; ++i) { 3260 if (qeth_init_input_buffer(card, 3261 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3262 break; 3263 } else { 3264 newcount++; 3265 } 3266 } 3267 3268 if (newcount < count) { 3269 /* we are in memory shortage so we switch back to 3270 traditional skb allocation and drop packages */ 3271 atomic_set(&card->force_alloc_skb, 3); 3272 count = newcount; 3273 } else { 3274 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3275 } 3276 3277 if (!count) { 3278 i = 0; 3279 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3280 i++; 3281 if (i == card->qdio.in_buf_pool.buf_count) { 3282 QETH_CARD_TEXT(card, 2, "qsarbw"); 3283 card->reclaim_index = index; 3284 schedule_delayed_work( 3285 &card->buffer_reclaim_work, 3286 QETH_RECLAIM_WORK_TIME); 3287 } 3288 return; 3289 } 3290 3291 /* 3292 * according to old code it should be avoided to requeue all 3293 * 128 buffers in order to benefit from PCI avoidance. 3294 * this function keeps at least one buffer (the buffer at 3295 * 'index') un-requeued -> this buffer is the first buffer that 3296 * will be requeued the next time 3297 */ 3298 if (card->options.performance_stats) { 3299 card->perf_stats.inbound_do_qdio_cnt++; 3300 card->perf_stats.inbound_do_qdio_start_time = 3301 qeth_get_micros(); 3302 } 3303 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3304 queue->next_buf_to_init, count); 3305 if (card->options.performance_stats) 3306 card->perf_stats.inbound_do_qdio_time += 3307 qeth_get_micros() - 3308 card->perf_stats.inbound_do_qdio_start_time; 3309 if (rc) { 3310 QETH_CARD_TEXT(card, 2, "qinberr"); 3311 } 3312 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3313 QDIO_MAX_BUFFERS_PER_Q; 3314 } 3315 } 3316 3317 static void qeth_buffer_reclaim_work(struct work_struct *work) 3318 { 3319 struct qeth_card *card = container_of(work, struct qeth_card, 3320 buffer_reclaim_work.work); 3321 3322 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3323 qeth_queue_input_buffer(card, card->reclaim_index); 3324 } 3325 3326 static void qeth_handle_send_error(struct qeth_card *card, 3327 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3328 { 3329 int sbalf15 = buffer->buffer->element[15].sflags; 3330 3331 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3332 if (card->info.type == QETH_CARD_TYPE_IQD) { 3333 if (sbalf15 == 0) { 3334 qdio_err = 0; 3335 } else { 3336 qdio_err = 1; 3337 } 3338 } 3339 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3340 3341 if (!qdio_err) 3342 return; 3343 3344 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3345 return; 3346 3347 QETH_CARD_TEXT(card, 1, "lnkfail"); 3348 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3349 (u16)qdio_err, (u8)sbalf15); 3350 } 3351 3352 /** 3353 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3354 * @queue: queue to check for packing buffer 3355 * 3356 * Returns number of buffers that were prepared for flush. 3357 */ 3358 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3359 { 3360 struct qeth_qdio_out_buffer *buffer; 3361 3362 buffer = queue->bufs[queue->next_buf_to_fill]; 3363 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3364 (buffer->next_element_to_fill > 0)) { 3365 /* it's a packing buffer */ 3366 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3367 queue->next_buf_to_fill = 3368 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3369 return 1; 3370 } 3371 return 0; 3372 } 3373 3374 /* 3375 * Switched to packing state if the number of used buffers on a queue 3376 * reaches a certain limit. 3377 */ 3378 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3379 { 3380 if (!queue->do_pack) { 3381 if (atomic_read(&queue->used_buffers) 3382 >= QETH_HIGH_WATERMARK_PACK){ 3383 /* switch non-PACKING -> PACKING */ 3384 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3385 if (queue->card->options.performance_stats) 3386 queue->card->perf_stats.sc_dp_p++; 3387 queue->do_pack = 1; 3388 } 3389 } 3390 } 3391 3392 /* 3393 * Switches from packing to non-packing mode. If there is a packing 3394 * buffer on the queue this buffer will be prepared to be flushed. 3395 * In that case 1 is returned to inform the caller. If no buffer 3396 * has to be flushed, zero is returned. 3397 */ 3398 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3399 { 3400 if (queue->do_pack) { 3401 if (atomic_read(&queue->used_buffers) 3402 <= QETH_LOW_WATERMARK_PACK) { 3403 /* switch PACKING -> non-PACKING */ 3404 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3405 if (queue->card->options.performance_stats) 3406 queue->card->perf_stats.sc_p_dp++; 3407 queue->do_pack = 0; 3408 return qeth_prep_flush_pack_buffer(queue); 3409 } 3410 } 3411 return 0; 3412 } 3413 3414 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3415 int count) 3416 { 3417 struct qeth_qdio_out_buffer *buf; 3418 int rc; 3419 int i; 3420 unsigned int qdio_flags; 3421 3422 for (i = index; i < index + count; ++i) { 3423 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3424 buf = queue->bufs[bidx]; 3425 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3426 SBAL_EFLAGS_LAST_ENTRY; 3427 3428 if (queue->bufstates) 3429 queue->bufstates[bidx].user = buf; 3430 3431 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3432 continue; 3433 3434 if (!queue->do_pack) { 3435 if ((atomic_read(&queue->used_buffers) >= 3436 (QETH_HIGH_WATERMARK_PACK - 3437 QETH_WATERMARK_PACK_FUZZ)) && 3438 !atomic_read(&queue->set_pci_flags_count)) { 3439 /* it's likely that we'll go to packing 3440 * mode soon */ 3441 atomic_inc(&queue->set_pci_flags_count); 3442 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3443 } 3444 } else { 3445 if (!atomic_read(&queue->set_pci_flags_count)) { 3446 /* 3447 * there's no outstanding PCI any more, so we 3448 * have to request a PCI to be sure the the PCI 3449 * will wake at some time in the future then we 3450 * can flush packed buffers that might still be 3451 * hanging around, which can happen if no 3452 * further send was requested by the stack 3453 */ 3454 atomic_inc(&queue->set_pci_flags_count); 3455 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3456 } 3457 } 3458 } 3459 3460 netif_trans_update(queue->card->dev); 3461 if (queue->card->options.performance_stats) { 3462 queue->card->perf_stats.outbound_do_qdio_cnt++; 3463 queue->card->perf_stats.outbound_do_qdio_start_time = 3464 qeth_get_micros(); 3465 } 3466 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3467 if (atomic_read(&queue->set_pci_flags_count)) 3468 qdio_flags |= QDIO_FLAG_PCI_OUT; 3469 atomic_add(count, &queue->used_buffers); 3470 3471 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3472 queue->queue_no, index, count); 3473 if (queue->card->options.performance_stats) 3474 queue->card->perf_stats.outbound_do_qdio_time += 3475 qeth_get_micros() - 3476 queue->card->perf_stats.outbound_do_qdio_start_time; 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 static 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->flags & IFF_UP) 3542 napi_schedule(&card->napi); 3543 } 3544 3545 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3546 { 3547 int rc; 3548 3549 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3550 rc = -1; 3551 goto out; 3552 } else { 3553 if (card->options.cq == cq) { 3554 rc = 0; 3555 goto out; 3556 } 3557 3558 if (card->state != CARD_STATE_DOWN && 3559 card->state != CARD_STATE_RECOVER) { 3560 rc = -1; 3561 goto out; 3562 } 3563 3564 qeth_free_qdio_buffers(card); 3565 card->options.cq = cq; 3566 rc = 0; 3567 } 3568 out: 3569 return rc; 3570 3571 } 3572 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3573 3574 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err, 3575 unsigned int queue, int first_element, 3576 int count) 3577 { 3578 struct qeth_qdio_q *cq = card->qdio.c_q; 3579 int i; 3580 int rc; 3581 3582 if (!qeth_is_cq(card, queue)) 3583 goto out; 3584 3585 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3586 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3587 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3588 3589 if (qdio_err) { 3590 netif_stop_queue(card->dev); 3591 qeth_schedule_recovery(card); 3592 goto out; 3593 } 3594 3595 if (card->options.performance_stats) { 3596 card->perf_stats.cq_cnt++; 3597 card->perf_stats.cq_start_time = qeth_get_micros(); 3598 } 3599 3600 for (i = first_element; i < first_element + count; ++i) { 3601 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3602 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3603 int e = 0; 3604 3605 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3606 buffer->element[e].addr) { 3607 unsigned long phys_aob_addr; 3608 3609 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3610 qeth_qdio_handle_aob(card, phys_aob_addr); 3611 ++e; 3612 } 3613 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER); 3614 } 3615 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3616 card->qdio.c_q->next_buf_to_init, 3617 count); 3618 if (rc) { 3619 dev_warn(&card->gdev->dev, 3620 "QDIO reported an error, rc=%i\n", rc); 3621 QETH_CARD_TEXT(card, 2, "qcqherr"); 3622 } 3623 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3624 + count) % QDIO_MAX_BUFFERS_PER_Q; 3625 3626 netif_wake_queue(card->dev); 3627 3628 if (card->options.performance_stats) { 3629 int delta_t = qeth_get_micros(); 3630 delta_t -= card->perf_stats.cq_start_time; 3631 card->perf_stats.cq_time += delta_t; 3632 } 3633 out: 3634 return; 3635 } 3636 3637 static void qeth_qdio_input_handler(struct ccw_device *ccwdev, 3638 unsigned int qdio_err, int queue, 3639 int first_elem, int count, 3640 unsigned long card_ptr) 3641 { 3642 struct qeth_card *card = (struct qeth_card *)card_ptr; 3643 3644 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3645 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3646 3647 if (qeth_is_cq(card, queue)) 3648 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3649 else if (qdio_err) 3650 qeth_schedule_recovery(card); 3651 } 3652 3653 static void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3654 unsigned int qdio_error, int __queue, 3655 int first_element, int count, 3656 unsigned long card_ptr) 3657 { 3658 struct qeth_card *card = (struct qeth_card *) card_ptr; 3659 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3660 struct qeth_qdio_out_buffer *buffer; 3661 int i; 3662 3663 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3664 if (qdio_error & QDIO_ERROR_FATAL) { 3665 QETH_CARD_TEXT(card, 2, "achkcond"); 3666 netif_stop_queue(card->dev); 3667 qeth_schedule_recovery(card); 3668 return; 3669 } 3670 if (card->options.performance_stats) { 3671 card->perf_stats.outbound_handler_cnt++; 3672 card->perf_stats.outbound_handler_start_time = 3673 qeth_get_micros(); 3674 } 3675 for (i = first_element; i < (first_element + count); ++i) { 3676 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3677 buffer = queue->bufs[bidx]; 3678 qeth_handle_send_error(card, buffer, qdio_error); 3679 3680 if (queue->bufstates && 3681 (queue->bufstates[bidx].flags & 3682 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3683 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3684 3685 if (atomic_cmpxchg(&buffer->state, 3686 QETH_QDIO_BUF_PRIMED, 3687 QETH_QDIO_BUF_PENDING) == 3688 QETH_QDIO_BUF_PRIMED) { 3689 qeth_notify_skbs(queue, buffer, 3690 TX_NOTIFY_PENDING); 3691 } 3692 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3693 3694 /* prepare the queue slot for re-use: */ 3695 qeth_scrub_qdio_buffer(buffer->buffer, 3696 QETH_MAX_BUFFER_ELEMENTS(card)); 3697 if (qeth_init_qdio_out_buf(queue, bidx)) { 3698 QETH_CARD_TEXT(card, 2, "outofbuf"); 3699 qeth_schedule_recovery(card); 3700 } 3701 } else { 3702 if (card->options.cq == QETH_CQ_ENABLED) { 3703 enum iucv_tx_notify n; 3704 3705 n = qeth_compute_cq_notification( 3706 buffer->buffer->element[15].sflags, 0); 3707 qeth_notify_skbs(queue, buffer, n); 3708 } 3709 3710 qeth_clear_output_buffer(queue, buffer); 3711 } 3712 qeth_cleanup_handled_pending(queue, bidx, 0); 3713 } 3714 atomic_sub(count, &queue->used_buffers); 3715 /* check if we need to do something on this outbound queue */ 3716 if (card->info.type != QETH_CARD_TYPE_IQD) 3717 qeth_check_outbound_queue(queue); 3718 3719 netif_wake_queue(queue->card->dev); 3720 if (card->options.performance_stats) 3721 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3722 card->perf_stats.outbound_handler_start_time; 3723 } 3724 3725 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3726 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3727 { 3728 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3729 return 2; 3730 return queue_num; 3731 } 3732 3733 /** 3734 * Note: Function assumes that we have 4 outbound queues. 3735 */ 3736 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3737 int ipv) 3738 { 3739 __be16 *tci; 3740 u8 tos; 3741 3742 switch (card->qdio.do_prio_queueing) { 3743 case QETH_PRIO_Q_ING_TOS: 3744 case QETH_PRIO_Q_ING_PREC: 3745 switch (ipv) { 3746 case 4: 3747 tos = ipv4_get_dsfield(ip_hdr(skb)); 3748 break; 3749 case 6: 3750 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3751 break; 3752 default: 3753 return card->qdio.default_out_queue; 3754 } 3755 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3756 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3757 if (tos & IPTOS_MINCOST) 3758 return qeth_cut_iqd_prio(card, 3); 3759 if (tos & IPTOS_RELIABILITY) 3760 return 2; 3761 if (tos & IPTOS_THROUGHPUT) 3762 return 1; 3763 if (tos & IPTOS_LOWDELAY) 3764 return 0; 3765 break; 3766 case QETH_PRIO_Q_ING_SKB: 3767 if (skb->priority > 5) 3768 return 0; 3769 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3770 case QETH_PRIO_Q_ING_VLAN: 3771 tci = &((struct ethhdr *)skb->data)->h_proto; 3772 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3773 return qeth_cut_iqd_prio(card, 3774 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3775 break; 3776 default: 3777 break; 3778 } 3779 return card->qdio.default_out_queue; 3780 } 3781 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3782 3783 /** 3784 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3785 * @skb: SKB address 3786 * 3787 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3788 * fragmented part of the SKB. Returns zero for linear SKB. 3789 */ 3790 int qeth_get_elements_for_frags(struct sk_buff *skb) 3791 { 3792 int cnt, elements = 0; 3793 3794 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3795 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3796 3797 elements += qeth_get_elements_for_range( 3798 (addr_t)skb_frag_address(frag), 3799 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3800 } 3801 return elements; 3802 } 3803 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3804 3805 static unsigned int qeth_count_elements(struct sk_buff *skb, int data_offset) 3806 { 3807 unsigned int elements = qeth_get_elements_for_frags(skb); 3808 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3809 addr_t start = (addr_t)skb->data + data_offset; 3810 3811 if (start != end) 3812 elements += qeth_get_elements_for_range(start, end); 3813 return elements; 3814 } 3815 3816 /** 3817 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3818 * @card: qeth card structure, to check max. elems. 3819 * @skb: SKB address 3820 * @extra_elems: extra elems needed, to check against max. 3821 * @data_offset: range starts at skb->data + data_offset 3822 * 3823 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3824 * skb data, including linear part and fragments. Checks if the result plus 3825 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3826 * Note: extra_elems is not included in the returned result. 3827 */ 3828 int qeth_get_elements_no(struct qeth_card *card, 3829 struct sk_buff *skb, int extra_elems, int data_offset) 3830 { 3831 int elements = qeth_count_elements(skb, data_offset); 3832 3833 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3834 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3835 "(Number=%d / Length=%d). Discarded.\n", 3836 elements + extra_elems, skb->len); 3837 return 0; 3838 } 3839 return elements; 3840 } 3841 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3842 3843 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3844 { 3845 int hroom, inpage, rest; 3846 3847 if (((unsigned long)skb->data & PAGE_MASK) != 3848 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3849 hroom = skb_headroom(skb); 3850 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3851 rest = len - inpage; 3852 if (rest > hroom) 3853 return 1; 3854 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3855 skb->data -= rest; 3856 skb->tail -= rest; 3857 *hdr = (struct qeth_hdr *)skb->data; 3858 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3859 } 3860 return 0; 3861 } 3862 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3863 3864 /** 3865 * qeth_add_hw_header() - add a HW header to an skb. 3866 * @skb: skb that the HW header should be added to. 3867 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3868 * it contains a valid pointer to a qeth_hdr. 3869 * @hdr_len: length of the HW header. 3870 * @proto_len: length of protocol headers that need to be in same page as the 3871 * HW header. 3872 * 3873 * Returns the pushed length. If the header can't be pushed on 3874 * (eg. because it would cross a page boundary), it is allocated from 3875 * the cache instead and 0 is returned. 3876 * The number of needed buffer elements is returned in @elements. 3877 * Error to create the hdr is indicated by returning with < 0. 3878 */ 3879 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb, 3880 struct qeth_hdr **hdr, unsigned int hdr_len, 3881 unsigned int proto_len, unsigned int *elements) 3882 { 3883 const unsigned int max_elements = QETH_MAX_BUFFER_ELEMENTS(card); 3884 const unsigned int contiguous = proto_len ? proto_len : 1; 3885 unsigned int __elements; 3886 addr_t start, end; 3887 bool push_ok; 3888 int rc; 3889 3890 check_layout: 3891 start = (addr_t)skb->data - hdr_len; 3892 end = (addr_t)skb->data; 3893 3894 if (qeth_get_elements_for_range(start, end + contiguous) == 1) { 3895 /* Push HW header into same page as first protocol header. */ 3896 push_ok = true; 3897 __elements = qeth_count_elements(skb, 0); 3898 } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) { 3899 /* Push HW header into a new page. */ 3900 push_ok = true; 3901 __elements = 1 + qeth_count_elements(skb, 0); 3902 } else { 3903 /* Use header cache, copy protocol headers up. */ 3904 push_ok = false; 3905 __elements = 1 + qeth_count_elements(skb, proto_len); 3906 } 3907 3908 /* Compress skb to fit into one IO buffer: */ 3909 if (__elements > max_elements) { 3910 if (!skb_is_nonlinear(skb)) { 3911 /* Drop it, no easy way of shrinking it further. */ 3912 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n", 3913 max_elements, __elements, skb->len); 3914 return -E2BIG; 3915 } 3916 3917 rc = skb_linearize(skb); 3918 if (card->options.performance_stats) { 3919 if (rc) 3920 card->perf_stats.tx_linfail++; 3921 else 3922 card->perf_stats.tx_lin++; 3923 } 3924 if (rc) 3925 return rc; 3926 3927 /* Linearization changed the layout, re-evaluate: */ 3928 goto check_layout; 3929 } 3930 3931 *elements = __elements; 3932 /* Add the header: */ 3933 if (push_ok) { 3934 *hdr = skb_push(skb, hdr_len); 3935 return hdr_len; 3936 } 3937 /* fall back */ 3938 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3939 if (!*hdr) 3940 return -ENOMEM; 3941 /* Copy protocol headers behind HW header: */ 3942 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len); 3943 return 0; 3944 } 3945 EXPORT_SYMBOL_GPL(qeth_add_hw_header); 3946 3947 static void __qeth_fill_buffer(struct sk_buff *skb, 3948 struct qeth_qdio_out_buffer *buf, 3949 bool is_first_elem, unsigned int offset) 3950 { 3951 struct qdio_buffer *buffer = buf->buffer; 3952 int element = buf->next_element_to_fill; 3953 int length = skb_headlen(skb) - offset; 3954 char *data = skb->data + offset; 3955 int length_here, cnt; 3956 3957 /* map linear part into buffer element(s) */ 3958 while (length > 0) { 3959 /* length_here is the remaining amount of data in this page */ 3960 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3961 if (length < length_here) 3962 length_here = length; 3963 3964 buffer->element[element].addr = data; 3965 buffer->element[element].length = length_here; 3966 length -= length_here; 3967 if (is_first_elem) { 3968 is_first_elem = false; 3969 if (length || skb_is_nonlinear(skb)) 3970 /* skb needs additional elements */ 3971 buffer->element[element].eflags = 3972 SBAL_EFLAGS_FIRST_FRAG; 3973 else 3974 buffer->element[element].eflags = 0; 3975 } else { 3976 buffer->element[element].eflags = 3977 SBAL_EFLAGS_MIDDLE_FRAG; 3978 } 3979 data += length_here; 3980 element++; 3981 } 3982 3983 /* map page frags into buffer element(s) */ 3984 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3985 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3986 3987 data = skb_frag_address(frag); 3988 length = skb_frag_size(frag); 3989 while (length > 0) { 3990 length_here = PAGE_SIZE - 3991 ((unsigned long) data % PAGE_SIZE); 3992 if (length < length_here) 3993 length_here = length; 3994 3995 buffer->element[element].addr = data; 3996 buffer->element[element].length = length_here; 3997 buffer->element[element].eflags = 3998 SBAL_EFLAGS_MIDDLE_FRAG; 3999 length -= length_here; 4000 data += length_here; 4001 element++; 4002 } 4003 } 4004 4005 if (buffer->element[element - 1].eflags) 4006 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 4007 buf->next_element_to_fill = element; 4008 } 4009 4010 /** 4011 * qeth_fill_buffer() - map skb into an output buffer 4012 * @queue: QDIO queue to submit the buffer on 4013 * @buf: buffer to transport the skb 4014 * @skb: skb to map into the buffer 4015 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 4016 * from qeth_core_header_cache. 4017 * @offset: when mapping the skb, start at skb->data + offset 4018 * @hd_len: if > 0, build a dedicated header element of this size 4019 */ 4020 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 4021 struct qeth_qdio_out_buffer *buf, 4022 struct sk_buff *skb, struct qeth_hdr *hdr, 4023 unsigned int offset, unsigned int hd_len) 4024 { 4025 struct qdio_buffer *buffer = buf->buffer; 4026 bool is_first_elem = true; 4027 int flush_cnt = 0; 4028 4029 refcount_inc(&skb->users); 4030 skb_queue_tail(&buf->skb_list, skb); 4031 4032 /* build dedicated header element */ 4033 if (hd_len) { 4034 int element = buf->next_element_to_fill; 4035 is_first_elem = false; 4036 4037 buffer->element[element].addr = hdr; 4038 buffer->element[element].length = hd_len; 4039 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4040 /* remember to free cache-allocated qeth_hdr: */ 4041 buf->is_header[element] = ((void *)hdr != skb->data); 4042 buf->next_element_to_fill++; 4043 } 4044 4045 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 4046 4047 if (!queue->do_pack) { 4048 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4049 /* set state to PRIMED -> will be flushed */ 4050 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4051 flush_cnt = 1; 4052 } else { 4053 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4054 if (queue->card->options.performance_stats) 4055 queue->card->perf_stats.skbs_sent_pack++; 4056 if (buf->next_element_to_fill >= 4057 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4058 /* 4059 * packed buffer if full -> set state PRIMED 4060 * -> will be flushed 4061 */ 4062 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4063 flush_cnt = 1; 4064 } 4065 } 4066 return flush_cnt; 4067 } 4068 4069 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4070 struct qeth_hdr *hdr, unsigned int offset, 4071 unsigned int hd_len) 4072 { 4073 int index = queue->next_buf_to_fill; 4074 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 4075 4076 /* 4077 * check if buffer is empty to make sure that we do not 'overtake' 4078 * ourselves and try to fill a buffer that is already primed 4079 */ 4080 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4081 return -EBUSY; 4082 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 4083 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4084 qeth_flush_buffers(queue, index, 1); 4085 return 0; 4086 } 4087 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4088 4089 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4090 struct sk_buff *skb, struct qeth_hdr *hdr, 4091 unsigned int offset, unsigned int hd_len, 4092 int elements_needed) 4093 { 4094 struct qeth_qdio_out_buffer *buffer; 4095 int start_index; 4096 int flush_count = 0; 4097 int do_pack = 0; 4098 int tmp; 4099 int rc = 0; 4100 4101 /* spin until we get the queue ... */ 4102 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4103 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4104 start_index = queue->next_buf_to_fill; 4105 buffer = queue->bufs[queue->next_buf_to_fill]; 4106 /* 4107 * check if buffer is empty to make sure that we do not 'overtake' 4108 * ourselves and try to fill a buffer that is already primed 4109 */ 4110 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4111 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4112 return -EBUSY; 4113 } 4114 /* check if we need to switch packing state of this queue */ 4115 qeth_switch_to_packing_if_needed(queue); 4116 if (queue->do_pack) { 4117 do_pack = 1; 4118 /* does packet fit in current buffer? */ 4119 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4120 buffer->next_element_to_fill) < elements_needed) { 4121 /* ... no -> set state PRIMED */ 4122 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4123 flush_count++; 4124 queue->next_buf_to_fill = 4125 (queue->next_buf_to_fill + 1) % 4126 QDIO_MAX_BUFFERS_PER_Q; 4127 buffer = queue->bufs[queue->next_buf_to_fill]; 4128 /* we did a step forward, so check buffer state 4129 * again */ 4130 if (atomic_read(&buffer->state) != 4131 QETH_QDIO_BUF_EMPTY) { 4132 qeth_flush_buffers(queue, start_index, 4133 flush_count); 4134 atomic_set(&queue->state, 4135 QETH_OUT_Q_UNLOCKED); 4136 rc = -EBUSY; 4137 goto out; 4138 } 4139 } 4140 } 4141 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4142 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4143 QDIO_MAX_BUFFERS_PER_Q; 4144 flush_count += tmp; 4145 if (flush_count) 4146 qeth_flush_buffers(queue, start_index, flush_count); 4147 else if (!atomic_read(&queue->set_pci_flags_count)) 4148 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4149 /* 4150 * queue->state will go from LOCKED -> UNLOCKED or from 4151 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4152 * (switch packing state or flush buffer to get another pci flag out). 4153 * In that case we will enter this loop 4154 */ 4155 while (atomic_dec_return(&queue->state)) { 4156 start_index = queue->next_buf_to_fill; 4157 /* check if we can go back to non-packing state */ 4158 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4159 /* 4160 * check if we need to flush a packing buffer to get a pci 4161 * flag out on the queue 4162 */ 4163 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4164 tmp = qeth_prep_flush_pack_buffer(queue); 4165 if (tmp) { 4166 qeth_flush_buffers(queue, start_index, tmp); 4167 flush_count += tmp; 4168 } 4169 } 4170 out: 4171 /* at this point the queue is UNLOCKED again */ 4172 if (queue->card->options.performance_stats && do_pack) 4173 queue->card->perf_stats.bufs_sent_pack += flush_count; 4174 4175 return rc; 4176 } 4177 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4178 4179 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4180 struct qeth_reply *reply, unsigned long data) 4181 { 4182 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4183 struct qeth_ipacmd_setadpparms *setparms; 4184 4185 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4186 4187 setparms = &(cmd->data.setadapterparms); 4188 if (qeth_setadpparms_inspect_rc(cmd)) { 4189 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4190 setparms->data.mode = SET_PROMISC_MODE_OFF; 4191 } 4192 card->info.promisc_mode = setparms->data.mode; 4193 return 0; 4194 } 4195 4196 void qeth_setadp_promisc_mode(struct qeth_card *card) 4197 { 4198 enum qeth_ipa_promisc_modes mode; 4199 struct net_device *dev = card->dev; 4200 struct qeth_cmd_buffer *iob; 4201 struct qeth_ipa_cmd *cmd; 4202 4203 QETH_CARD_TEXT(card, 4, "setprom"); 4204 4205 if (((dev->flags & IFF_PROMISC) && 4206 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4207 (!(dev->flags & IFF_PROMISC) && 4208 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4209 return; 4210 mode = SET_PROMISC_MODE_OFF; 4211 if (dev->flags & IFF_PROMISC) 4212 mode = SET_PROMISC_MODE_ON; 4213 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4214 4215 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4216 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4217 if (!iob) 4218 return; 4219 cmd = __ipa_cmd(iob); 4220 cmd->data.setadapterparms.data.mode = mode; 4221 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4222 } 4223 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4224 4225 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4226 { 4227 struct qeth_card *card; 4228 4229 card = dev->ml_priv; 4230 4231 QETH_CARD_TEXT(card, 5, "getstat"); 4232 4233 return &card->stats; 4234 } 4235 EXPORT_SYMBOL_GPL(qeth_get_stats); 4236 4237 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4238 struct qeth_reply *reply, unsigned long data) 4239 { 4240 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4241 4242 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4243 if (qeth_setadpparms_inspect_rc(cmd)) 4244 return 0; 4245 4246 if (!card->options.layer2 || 4247 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4248 ether_addr_copy(card->dev->dev_addr, 4249 cmd->data.setadapterparms.data.change_addr.addr); 4250 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4251 } 4252 return 0; 4253 } 4254 4255 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4256 { 4257 int rc; 4258 struct qeth_cmd_buffer *iob; 4259 struct qeth_ipa_cmd *cmd; 4260 4261 QETH_CARD_TEXT(card, 4, "chgmac"); 4262 4263 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4264 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4265 sizeof(struct qeth_change_addr)); 4266 if (!iob) 4267 return -ENOMEM; 4268 cmd = __ipa_cmd(iob); 4269 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4270 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4271 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4272 card->dev->dev_addr); 4273 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4274 NULL); 4275 return rc; 4276 } 4277 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4278 4279 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4280 struct qeth_reply *reply, unsigned long data) 4281 { 4282 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4283 struct qeth_set_access_ctrl *access_ctrl_req; 4284 int fallback = *(int *)reply->param; 4285 4286 QETH_CARD_TEXT(card, 4, "setaccb"); 4287 if (cmd->hdr.return_code) 4288 return 0; 4289 qeth_setadpparms_inspect_rc(cmd); 4290 4291 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4292 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4293 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4294 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4295 cmd->data.setadapterparms.hdr.return_code); 4296 if (cmd->data.setadapterparms.hdr.return_code != 4297 SET_ACCESS_CTRL_RC_SUCCESS) 4298 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4299 card->gdev->dev.kobj.name, 4300 access_ctrl_req->subcmd_code, 4301 cmd->data.setadapterparms.hdr.return_code); 4302 switch (cmd->data.setadapterparms.hdr.return_code) { 4303 case SET_ACCESS_CTRL_RC_SUCCESS: 4304 if (card->options.isolation == ISOLATION_MODE_NONE) { 4305 dev_info(&card->gdev->dev, 4306 "QDIO data connection isolation is deactivated\n"); 4307 } else { 4308 dev_info(&card->gdev->dev, 4309 "QDIO data connection isolation is activated\n"); 4310 } 4311 break; 4312 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4313 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4314 "deactivated\n", dev_name(&card->gdev->dev)); 4315 if (fallback) 4316 card->options.isolation = card->options.prev_isolation; 4317 break; 4318 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4319 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4320 " activated\n", dev_name(&card->gdev->dev)); 4321 if (fallback) 4322 card->options.isolation = card->options.prev_isolation; 4323 break; 4324 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4325 dev_err(&card->gdev->dev, "Adapter does not " 4326 "support QDIO data connection isolation\n"); 4327 break; 4328 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4329 dev_err(&card->gdev->dev, 4330 "Adapter is dedicated. " 4331 "QDIO data connection isolation not supported\n"); 4332 if (fallback) 4333 card->options.isolation = card->options.prev_isolation; 4334 break; 4335 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4336 dev_err(&card->gdev->dev, 4337 "TSO does not permit QDIO data connection isolation\n"); 4338 if (fallback) 4339 card->options.isolation = card->options.prev_isolation; 4340 break; 4341 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4342 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4343 "support reflective relay mode\n"); 4344 if (fallback) 4345 card->options.isolation = card->options.prev_isolation; 4346 break; 4347 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4348 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4349 "enabled at the adjacent switch port"); 4350 if (fallback) 4351 card->options.isolation = card->options.prev_isolation; 4352 break; 4353 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4354 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4355 "at the adjacent switch failed\n"); 4356 break; 4357 default: 4358 /* this should never happen */ 4359 if (fallback) 4360 card->options.isolation = card->options.prev_isolation; 4361 break; 4362 } 4363 return 0; 4364 } 4365 4366 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4367 enum qeth_ipa_isolation_modes isolation, int fallback) 4368 { 4369 int rc; 4370 struct qeth_cmd_buffer *iob; 4371 struct qeth_ipa_cmd *cmd; 4372 struct qeth_set_access_ctrl *access_ctrl_req; 4373 4374 QETH_CARD_TEXT(card, 4, "setacctl"); 4375 4376 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4377 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4378 4379 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4380 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4381 sizeof(struct qeth_set_access_ctrl)); 4382 if (!iob) 4383 return -ENOMEM; 4384 cmd = __ipa_cmd(iob); 4385 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4386 access_ctrl_req->subcmd_code = isolation; 4387 4388 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4389 &fallback); 4390 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4391 return rc; 4392 } 4393 4394 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4395 { 4396 int rc = 0; 4397 4398 QETH_CARD_TEXT(card, 4, "setactlo"); 4399 4400 if ((card->info.type == QETH_CARD_TYPE_OSD || 4401 card->info.type == QETH_CARD_TYPE_OSX) && 4402 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4403 rc = qeth_setadpparms_set_access_ctrl(card, 4404 card->options.isolation, fallback); 4405 if (rc) { 4406 QETH_DBF_MESSAGE(3, 4407 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4408 card->gdev->dev.kobj.name, 4409 rc); 4410 rc = -EOPNOTSUPP; 4411 } 4412 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4413 card->options.isolation = ISOLATION_MODE_NONE; 4414 4415 dev_err(&card->gdev->dev, "Adapter does not " 4416 "support QDIO data connection isolation\n"); 4417 rc = -EOPNOTSUPP; 4418 } 4419 return rc; 4420 } 4421 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4422 4423 void qeth_tx_timeout(struct net_device *dev) 4424 { 4425 struct qeth_card *card; 4426 4427 card = dev->ml_priv; 4428 QETH_CARD_TEXT(card, 4, "txtimeo"); 4429 card->stats.tx_errors++; 4430 qeth_schedule_recovery(card); 4431 } 4432 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4433 4434 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4435 { 4436 struct qeth_card *card = dev->ml_priv; 4437 int rc = 0; 4438 4439 switch (regnum) { 4440 case MII_BMCR: /* Basic mode control register */ 4441 rc = BMCR_FULLDPLX; 4442 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4443 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4444 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4445 rc |= BMCR_SPEED100; 4446 break; 4447 case MII_BMSR: /* Basic mode status register */ 4448 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4449 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4450 BMSR_100BASE4; 4451 break; 4452 case MII_PHYSID1: /* PHYS ID 1 */ 4453 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4454 dev->dev_addr[2]; 4455 rc = (rc >> 5) & 0xFFFF; 4456 break; 4457 case MII_PHYSID2: /* PHYS ID 2 */ 4458 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4459 break; 4460 case MII_ADVERTISE: /* Advertisement control reg */ 4461 rc = ADVERTISE_ALL; 4462 break; 4463 case MII_LPA: /* Link partner ability reg */ 4464 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4465 LPA_100BASE4 | LPA_LPACK; 4466 break; 4467 case MII_EXPANSION: /* Expansion register */ 4468 break; 4469 case MII_DCOUNTER: /* disconnect counter */ 4470 break; 4471 case MII_FCSCOUNTER: /* false carrier counter */ 4472 break; 4473 case MII_NWAYTEST: /* N-way auto-neg test register */ 4474 break; 4475 case MII_RERRCOUNTER: /* rx error counter */ 4476 rc = card->stats.rx_errors; 4477 break; 4478 case MII_SREVISION: /* silicon revision */ 4479 break; 4480 case MII_RESV1: /* reserved 1 */ 4481 break; 4482 case MII_LBRERROR: /* loopback, rx, bypass error */ 4483 break; 4484 case MII_PHYADDR: /* physical address */ 4485 break; 4486 case MII_RESV2: /* reserved 2 */ 4487 break; 4488 case MII_TPISTATUS: /* TPI status for 10mbps */ 4489 break; 4490 case MII_NCONFIG: /* network interface config */ 4491 break; 4492 default: 4493 break; 4494 } 4495 return rc; 4496 } 4497 4498 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4499 struct qeth_cmd_buffer *iob, int len, 4500 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4501 unsigned long), 4502 void *reply_param) 4503 { 4504 u16 s1, s2; 4505 4506 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4507 4508 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4509 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4510 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4511 /* adjust PDU length fields in IPA_PDU_HEADER */ 4512 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4513 s2 = (u32) len; 4514 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4515 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4516 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4517 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4518 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4519 reply_cb, reply_param); 4520 } 4521 4522 static int qeth_snmp_command_cb(struct qeth_card *card, 4523 struct qeth_reply *reply, unsigned long sdata) 4524 { 4525 struct qeth_ipa_cmd *cmd; 4526 struct qeth_arp_query_info *qinfo; 4527 struct qeth_snmp_cmd *snmp; 4528 unsigned char *data; 4529 __u16 data_len; 4530 4531 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4532 4533 cmd = (struct qeth_ipa_cmd *) sdata; 4534 data = (unsigned char *)((char *)cmd - reply->offset); 4535 qinfo = (struct qeth_arp_query_info *) reply->param; 4536 snmp = &cmd->data.setadapterparms.data.snmp; 4537 4538 if (cmd->hdr.return_code) { 4539 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4540 return 0; 4541 } 4542 if (cmd->data.setadapterparms.hdr.return_code) { 4543 cmd->hdr.return_code = 4544 cmd->data.setadapterparms.hdr.return_code; 4545 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4546 return 0; 4547 } 4548 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4549 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4550 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4551 else 4552 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4553 4554 /* check if there is enough room in userspace */ 4555 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4556 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4557 cmd->hdr.return_code = IPA_RC_ENOMEM; 4558 return 0; 4559 } 4560 QETH_CARD_TEXT_(card, 4, "snore%i", 4561 cmd->data.setadapterparms.hdr.used_total); 4562 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4563 cmd->data.setadapterparms.hdr.seq_no); 4564 /*copy entries to user buffer*/ 4565 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4566 memcpy(qinfo->udata + qinfo->udata_offset, 4567 (char *)snmp, 4568 data_len + offsetof(struct qeth_snmp_cmd, data)); 4569 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4570 } else { 4571 memcpy(qinfo->udata + qinfo->udata_offset, 4572 (char *)&snmp->request, data_len); 4573 } 4574 qinfo->udata_offset += data_len; 4575 /* check if all replies received ... */ 4576 QETH_CARD_TEXT_(card, 4, "srtot%i", 4577 cmd->data.setadapterparms.hdr.used_total); 4578 QETH_CARD_TEXT_(card, 4, "srseq%i", 4579 cmd->data.setadapterparms.hdr.seq_no); 4580 if (cmd->data.setadapterparms.hdr.seq_no < 4581 cmd->data.setadapterparms.hdr.used_total) 4582 return 1; 4583 return 0; 4584 } 4585 4586 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4587 { 4588 struct qeth_cmd_buffer *iob; 4589 struct qeth_ipa_cmd *cmd; 4590 struct qeth_snmp_ureq *ureq; 4591 unsigned int req_len; 4592 struct qeth_arp_query_info qinfo = {0, }; 4593 int rc = 0; 4594 4595 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4596 4597 if (card->info.guestlan) 4598 return -EOPNOTSUPP; 4599 4600 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4601 (!card->options.layer2)) { 4602 return -EOPNOTSUPP; 4603 } 4604 /* skip 4 bytes (data_len struct member) to get req_len */ 4605 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4606 return -EFAULT; 4607 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4608 sizeof(struct qeth_ipacmd_hdr) - 4609 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4610 return -EINVAL; 4611 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4612 if (IS_ERR(ureq)) { 4613 QETH_CARD_TEXT(card, 2, "snmpnome"); 4614 return PTR_ERR(ureq); 4615 } 4616 qinfo.udata_len = ureq->hdr.data_len; 4617 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4618 if (!qinfo.udata) { 4619 kfree(ureq); 4620 return -ENOMEM; 4621 } 4622 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4623 4624 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4625 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4626 if (!iob) { 4627 rc = -ENOMEM; 4628 goto out; 4629 } 4630 cmd = __ipa_cmd(iob); 4631 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4632 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4633 qeth_snmp_command_cb, (void *)&qinfo); 4634 if (rc) 4635 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4636 QETH_CARD_IFNAME(card), rc); 4637 else { 4638 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4639 rc = -EFAULT; 4640 } 4641 out: 4642 kfree(ureq); 4643 kfree(qinfo.udata); 4644 return rc; 4645 } 4646 4647 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4648 struct qeth_reply *reply, unsigned long data) 4649 { 4650 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4651 struct qeth_qoat_priv *priv; 4652 char *resdata; 4653 int resdatalen; 4654 4655 QETH_CARD_TEXT(card, 3, "qoatcb"); 4656 if (qeth_setadpparms_inspect_rc(cmd)) 4657 return 0; 4658 4659 priv = (struct qeth_qoat_priv *)reply->param; 4660 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4661 resdata = (char *)data + 28; 4662 4663 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4664 cmd->hdr.return_code = IPA_RC_FFFF; 4665 return 0; 4666 } 4667 4668 memcpy((priv->buffer + priv->response_len), resdata, 4669 resdatalen); 4670 priv->response_len += resdatalen; 4671 4672 if (cmd->data.setadapterparms.hdr.seq_no < 4673 cmd->data.setadapterparms.hdr.used_total) 4674 return 1; 4675 return 0; 4676 } 4677 4678 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4679 { 4680 int rc = 0; 4681 struct qeth_cmd_buffer *iob; 4682 struct qeth_ipa_cmd *cmd; 4683 struct qeth_query_oat *oat_req; 4684 struct qeth_query_oat_data oat_data; 4685 struct qeth_qoat_priv priv; 4686 void __user *tmp; 4687 4688 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4689 4690 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4691 rc = -EOPNOTSUPP; 4692 goto out; 4693 } 4694 4695 if (copy_from_user(&oat_data, udata, 4696 sizeof(struct qeth_query_oat_data))) { 4697 rc = -EFAULT; 4698 goto out; 4699 } 4700 4701 priv.buffer_len = oat_data.buffer_len; 4702 priv.response_len = 0; 4703 priv.buffer = vzalloc(oat_data.buffer_len); 4704 if (!priv.buffer) { 4705 rc = -ENOMEM; 4706 goto out; 4707 } 4708 4709 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4710 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4711 sizeof(struct qeth_query_oat)); 4712 if (!iob) { 4713 rc = -ENOMEM; 4714 goto out_free; 4715 } 4716 cmd = __ipa_cmd(iob); 4717 oat_req = &cmd->data.setadapterparms.data.query_oat; 4718 oat_req->subcmd_code = oat_data.command; 4719 4720 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4721 &priv); 4722 if (!rc) { 4723 if (is_compat_task()) 4724 tmp = compat_ptr(oat_data.ptr); 4725 else 4726 tmp = (void __user *)(unsigned long)oat_data.ptr; 4727 4728 if (copy_to_user(tmp, priv.buffer, 4729 priv.response_len)) { 4730 rc = -EFAULT; 4731 goto out_free; 4732 } 4733 4734 oat_data.response_len = priv.response_len; 4735 4736 if (copy_to_user(udata, &oat_data, 4737 sizeof(struct qeth_query_oat_data))) 4738 rc = -EFAULT; 4739 } else 4740 if (rc == IPA_RC_FFFF) 4741 rc = -EFAULT; 4742 4743 out_free: 4744 vfree(priv.buffer); 4745 out: 4746 return rc; 4747 } 4748 4749 static int qeth_query_card_info_cb(struct qeth_card *card, 4750 struct qeth_reply *reply, unsigned long data) 4751 { 4752 struct carrier_info *carrier_info = (struct carrier_info *)reply->param; 4753 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4754 struct qeth_query_card_info *card_info; 4755 4756 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4757 if (qeth_setadpparms_inspect_rc(cmd)) 4758 return 0; 4759 4760 card_info = &cmd->data.setadapterparms.data.card_info; 4761 carrier_info->card_type = card_info->card_type; 4762 carrier_info->port_mode = card_info->port_mode; 4763 carrier_info->port_speed = card_info->port_speed; 4764 return 0; 4765 } 4766 4767 static int qeth_query_card_info(struct qeth_card *card, 4768 struct carrier_info *carrier_info) 4769 { 4770 struct qeth_cmd_buffer *iob; 4771 4772 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4773 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4774 return -EOPNOTSUPP; 4775 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4776 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4777 if (!iob) 4778 return -ENOMEM; 4779 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4780 (void *)carrier_info); 4781 } 4782 4783 /** 4784 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4785 * @card: pointer to a qeth_card 4786 * 4787 * Returns 4788 * 0, if a MAC address has been set for the card's netdevice 4789 * a return code, for various error conditions 4790 */ 4791 int qeth_vm_request_mac(struct qeth_card *card) 4792 { 4793 struct diag26c_mac_resp *response; 4794 struct diag26c_mac_req *request; 4795 struct ccw_dev_id id; 4796 int rc; 4797 4798 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4799 4800 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4801 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4802 if (!request || !response) { 4803 rc = -ENOMEM; 4804 goto out; 4805 } 4806 4807 ccw_device_get_id(CARD_DDEV(card), &id); 4808 request->resp_buf_len = sizeof(*response); 4809 request->resp_version = DIAG26C_VERSION2; 4810 request->op_code = DIAG26C_GET_MAC; 4811 request->devno = id.devno; 4812 4813 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4814 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4815 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4816 if (rc) 4817 goto out; 4818 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4819 4820 if (request->resp_buf_len < sizeof(*response) || 4821 response->version != request->resp_version) { 4822 rc = -EIO; 4823 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4824 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4825 sizeof(request->resp_buf_len)); 4826 } else if (!is_valid_ether_addr(response->mac)) { 4827 rc = -EINVAL; 4828 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4829 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4830 } else { 4831 ether_addr_copy(card->dev->dev_addr, response->mac); 4832 } 4833 4834 out: 4835 kfree(response); 4836 kfree(request); 4837 return rc; 4838 } 4839 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4840 4841 static int qeth_get_qdio_q_format(struct qeth_card *card) 4842 { 4843 if (card->info.type == QETH_CARD_TYPE_IQD) 4844 return QDIO_IQDIO_QFMT; 4845 else 4846 return QDIO_QETH_QFMT; 4847 } 4848 4849 static void qeth_determine_capabilities(struct qeth_card *card) 4850 { 4851 int rc; 4852 int length; 4853 char *prcd; 4854 struct ccw_device *ddev; 4855 int ddev_offline = 0; 4856 4857 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4858 ddev = CARD_DDEV(card); 4859 if (!ddev->online) { 4860 ddev_offline = 1; 4861 rc = ccw_device_set_online(ddev); 4862 if (rc) { 4863 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4864 goto out; 4865 } 4866 } 4867 4868 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4869 if (rc) { 4870 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4871 dev_name(&card->gdev->dev), rc); 4872 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4873 goto out_offline; 4874 } 4875 qeth_configure_unitaddr(card, prcd); 4876 if (ddev_offline) 4877 qeth_configure_blkt_default(card, prcd); 4878 kfree(prcd); 4879 4880 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4881 if (rc) 4882 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4883 4884 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4885 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4886 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4887 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4888 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4889 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4890 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4891 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4892 dev_info(&card->gdev->dev, 4893 "Completion Queueing supported\n"); 4894 } else { 4895 card->options.cq = QETH_CQ_NOTAVAILABLE; 4896 } 4897 4898 4899 out_offline: 4900 if (ddev_offline == 1) 4901 ccw_device_set_offline(ddev); 4902 out: 4903 return; 4904 } 4905 4906 static void qeth_qdio_establish_cq(struct qeth_card *card, 4907 struct qdio_buffer **in_sbal_ptrs, 4908 void (**queue_start_poll) 4909 (struct ccw_device *, int, 4910 unsigned long)) 4911 { 4912 int i; 4913 4914 if (card->options.cq == QETH_CQ_ENABLED) { 4915 int offset = QDIO_MAX_BUFFERS_PER_Q * 4916 (card->qdio.no_in_queues - 1); 4917 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4918 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4919 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4920 } 4921 4922 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4923 } 4924 } 4925 4926 static int qeth_qdio_establish(struct qeth_card *card) 4927 { 4928 struct qdio_initialize init_data; 4929 char *qib_param_field; 4930 struct qdio_buffer **in_sbal_ptrs; 4931 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4932 struct qdio_buffer **out_sbal_ptrs; 4933 int i, j, k; 4934 int rc = 0; 4935 4936 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4937 4938 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q, 4939 GFP_KERNEL); 4940 if (!qib_param_field) { 4941 rc = -ENOMEM; 4942 goto out_free_nothing; 4943 } 4944 4945 qeth_create_qib_param_field(card, qib_param_field); 4946 qeth_create_qib_param_field_blkt(card, qib_param_field); 4947 4948 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q, 4949 sizeof(void *), 4950 GFP_KERNEL); 4951 if (!in_sbal_ptrs) { 4952 rc = -ENOMEM; 4953 goto out_free_qib_param; 4954 } 4955 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4956 in_sbal_ptrs[i] = (struct qdio_buffer *) 4957 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4958 } 4959 4960 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), 4961 GFP_KERNEL); 4962 if (!queue_start_poll) { 4963 rc = -ENOMEM; 4964 goto out_free_in_sbals; 4965 } 4966 for (i = 0; i < card->qdio.no_in_queues; ++i) 4967 queue_start_poll[i] = qeth_qdio_start_poll; 4968 4969 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4970 4971 out_sbal_ptrs = 4972 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q, 4973 sizeof(void *), 4974 GFP_KERNEL); 4975 if (!out_sbal_ptrs) { 4976 rc = -ENOMEM; 4977 goto out_free_queue_start_poll; 4978 } 4979 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4980 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4981 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4982 card->qdio.out_qs[i]->bufs[j]->buffer); 4983 } 4984 4985 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4986 init_data.cdev = CARD_DDEV(card); 4987 init_data.q_format = qeth_get_qdio_q_format(card); 4988 init_data.qib_param_field_format = 0; 4989 init_data.qib_param_field = qib_param_field; 4990 init_data.no_input_qs = card->qdio.no_in_queues; 4991 init_data.no_output_qs = card->qdio.no_out_queues; 4992 init_data.input_handler = qeth_qdio_input_handler; 4993 init_data.output_handler = qeth_qdio_output_handler; 4994 init_data.queue_start_poll_array = queue_start_poll; 4995 init_data.int_parm = (unsigned long) card; 4996 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4997 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4998 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4999 init_data.scan_threshold = 5000 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 5001 5002 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 5003 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 5004 rc = qdio_allocate(&init_data); 5005 if (rc) { 5006 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5007 goto out; 5008 } 5009 rc = qdio_establish(&init_data); 5010 if (rc) { 5011 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5012 qdio_free(CARD_DDEV(card)); 5013 } 5014 } 5015 5016 switch (card->options.cq) { 5017 case QETH_CQ_ENABLED: 5018 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5019 break; 5020 case QETH_CQ_DISABLED: 5021 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5022 break; 5023 default: 5024 break; 5025 } 5026 out: 5027 kfree(out_sbal_ptrs); 5028 out_free_queue_start_poll: 5029 kfree(queue_start_poll); 5030 out_free_in_sbals: 5031 kfree(in_sbal_ptrs); 5032 out_free_qib_param: 5033 kfree(qib_param_field); 5034 out_free_nothing: 5035 return rc; 5036 } 5037 5038 static void qeth_core_free_card(struct qeth_card *card) 5039 { 5040 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5041 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5042 qeth_clean_channel(&card->read); 5043 qeth_clean_channel(&card->write); 5044 qeth_clean_channel(&card->data); 5045 qeth_free_qdio_buffers(card); 5046 unregister_service_level(&card->qeth_service_level); 5047 kfree(card); 5048 } 5049 5050 void qeth_trace_features(struct qeth_card *card) 5051 { 5052 QETH_CARD_TEXT(card, 2, "features"); 5053 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5054 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5055 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5056 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5057 sizeof(card->info.diagass_support)); 5058 } 5059 EXPORT_SYMBOL_GPL(qeth_trace_features); 5060 5061 static struct ccw_device_id qeth_ids[] = { 5062 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5063 .driver_info = QETH_CARD_TYPE_OSD}, 5064 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5065 .driver_info = QETH_CARD_TYPE_IQD}, 5066 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5067 .driver_info = QETH_CARD_TYPE_OSN}, 5068 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5069 .driver_info = QETH_CARD_TYPE_OSM}, 5070 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5071 .driver_info = QETH_CARD_TYPE_OSX}, 5072 {}, 5073 }; 5074 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5075 5076 static struct ccw_driver qeth_ccw_driver = { 5077 .driver = { 5078 .owner = THIS_MODULE, 5079 .name = "qeth", 5080 }, 5081 .ids = qeth_ids, 5082 .probe = ccwgroup_probe_ccwdev, 5083 .remove = ccwgroup_remove_ccwdev, 5084 }; 5085 5086 int qeth_core_hardsetup_card(struct qeth_card *card) 5087 { 5088 int retries = 3; 5089 int rc; 5090 5091 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5092 atomic_set(&card->force_alloc_skb, 0); 5093 qeth_update_from_chp_desc(card); 5094 retry: 5095 if (retries < 3) 5096 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5097 dev_name(&card->gdev->dev)); 5098 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5099 ccw_device_set_offline(CARD_DDEV(card)); 5100 ccw_device_set_offline(CARD_WDEV(card)); 5101 ccw_device_set_offline(CARD_RDEV(card)); 5102 qdio_free(CARD_DDEV(card)); 5103 rc = ccw_device_set_online(CARD_RDEV(card)); 5104 if (rc) 5105 goto retriable; 5106 rc = ccw_device_set_online(CARD_WDEV(card)); 5107 if (rc) 5108 goto retriable; 5109 rc = ccw_device_set_online(CARD_DDEV(card)); 5110 if (rc) 5111 goto retriable; 5112 retriable: 5113 if (rc == -ERESTARTSYS) { 5114 QETH_DBF_TEXT(SETUP, 2, "break1"); 5115 return rc; 5116 } else if (rc) { 5117 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5118 if (--retries < 0) 5119 goto out; 5120 else 5121 goto retry; 5122 } 5123 qeth_determine_capabilities(card); 5124 qeth_init_tokens(card); 5125 qeth_init_func_level(card); 5126 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5127 if (rc == -ERESTARTSYS) { 5128 QETH_DBF_TEXT(SETUP, 2, "break2"); 5129 return rc; 5130 } else if (rc) { 5131 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5132 if (--retries < 0) 5133 goto out; 5134 else 5135 goto retry; 5136 } 5137 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5138 if (rc == -ERESTARTSYS) { 5139 QETH_DBF_TEXT(SETUP, 2, "break3"); 5140 return rc; 5141 } else if (rc) { 5142 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5143 if (--retries < 0) 5144 goto out; 5145 else 5146 goto retry; 5147 } 5148 card->read_or_write_problem = 0; 5149 rc = qeth_mpc_initialize(card); 5150 if (rc) { 5151 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5152 goto out; 5153 } 5154 5155 rc = qeth_send_startlan(card); 5156 if (rc) { 5157 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5158 if (rc == IPA_RC_LAN_OFFLINE) { 5159 dev_warn(&card->gdev->dev, 5160 "The LAN is offline\n"); 5161 card->lan_online = 0; 5162 } else { 5163 rc = -ENODEV; 5164 goto out; 5165 } 5166 } else 5167 card->lan_online = 1; 5168 5169 card->options.ipa4.supported_funcs = 0; 5170 card->options.ipa6.supported_funcs = 0; 5171 card->options.adp.supported_funcs = 0; 5172 card->options.sbp.supported_funcs = 0; 5173 card->info.diagass_support = 0; 5174 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5175 if (rc == -ENOMEM) 5176 goto out; 5177 if (qeth_is_supported(card, IPA_IPV6)) { 5178 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 5179 if (rc == -ENOMEM) 5180 goto out; 5181 } 5182 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5183 rc = qeth_query_setadapterparms(card); 5184 if (rc < 0) { 5185 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5186 goto out; 5187 } 5188 } 5189 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5190 rc = qeth_query_setdiagass(card); 5191 if (rc < 0) { 5192 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5193 goto out; 5194 } 5195 } 5196 return 0; 5197 out: 5198 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5199 "an error on the device\n"); 5200 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5201 dev_name(&card->gdev->dev), rc); 5202 return rc; 5203 } 5204 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5205 5206 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5207 struct sk_buff *skb, int offset, int data_len) 5208 { 5209 struct page *page = virt_to_page(element->addr); 5210 unsigned int next_frag; 5211 5212 /* first fill the linear space */ 5213 if (!skb->len) { 5214 unsigned int linear = min(data_len, skb_tailroom(skb)); 5215 5216 skb_put_data(skb, element->addr + offset, linear); 5217 data_len -= linear; 5218 if (!data_len) 5219 return; 5220 offset += linear; 5221 /* fall through to add page frag for remaining data */ 5222 } 5223 5224 next_frag = skb_shinfo(skb)->nr_frags; 5225 get_page(page); 5226 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5227 } 5228 5229 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5230 { 5231 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5232 } 5233 5234 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5235 struct qeth_qdio_buffer *qethbuffer, 5236 struct qdio_buffer_element **__element, int *__offset, 5237 struct qeth_hdr **hdr) 5238 { 5239 struct qdio_buffer_element *element = *__element; 5240 struct qdio_buffer *buffer = qethbuffer->buffer; 5241 int offset = *__offset; 5242 struct sk_buff *skb; 5243 int skb_len = 0; 5244 void *data_ptr; 5245 int data_len; 5246 int headroom = 0; 5247 int use_rx_sg = 0; 5248 5249 /* qeth_hdr must not cross element boundaries */ 5250 while (element->length < offset + sizeof(struct qeth_hdr)) { 5251 if (qeth_is_last_sbale(element)) 5252 return NULL; 5253 element++; 5254 offset = 0; 5255 } 5256 *hdr = element->addr + offset; 5257 5258 offset += sizeof(struct qeth_hdr); 5259 switch ((*hdr)->hdr.l2.id) { 5260 case QETH_HEADER_TYPE_LAYER2: 5261 skb_len = (*hdr)->hdr.l2.pkt_length; 5262 break; 5263 case QETH_HEADER_TYPE_LAYER3: 5264 skb_len = (*hdr)->hdr.l3.length; 5265 headroom = ETH_HLEN; 5266 break; 5267 case QETH_HEADER_TYPE_OSN: 5268 skb_len = (*hdr)->hdr.osn.pdu_length; 5269 headroom = sizeof(struct qeth_hdr); 5270 break; 5271 default: 5272 break; 5273 } 5274 5275 if (!skb_len) 5276 return NULL; 5277 5278 if (((skb_len >= card->options.rx_sg_cb) && 5279 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5280 (!atomic_read(&card->force_alloc_skb))) || 5281 (card->options.cq == QETH_CQ_ENABLED)) 5282 use_rx_sg = 1; 5283 5284 if (use_rx_sg && qethbuffer->rx_skb) { 5285 /* QETH_CQ_ENABLED only: */ 5286 skb = qethbuffer->rx_skb; 5287 qethbuffer->rx_skb = NULL; 5288 } else { 5289 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5290 5291 skb = napi_alloc_skb(&card->napi, linear + headroom); 5292 } 5293 if (!skb) 5294 goto no_mem; 5295 if (headroom) 5296 skb_reserve(skb, headroom); 5297 5298 data_ptr = element->addr + offset; 5299 while (skb_len) { 5300 data_len = min(skb_len, (int)(element->length - offset)); 5301 if (data_len) { 5302 if (use_rx_sg) 5303 qeth_create_skb_frag(element, skb, offset, 5304 data_len); 5305 else 5306 skb_put_data(skb, data_ptr, data_len); 5307 } 5308 skb_len -= data_len; 5309 if (skb_len) { 5310 if (qeth_is_last_sbale(element)) { 5311 QETH_CARD_TEXT(card, 4, "unexeob"); 5312 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5313 dev_kfree_skb_any(skb); 5314 card->stats.rx_errors++; 5315 return NULL; 5316 } 5317 element++; 5318 offset = 0; 5319 data_ptr = element->addr; 5320 } else { 5321 offset += data_len; 5322 } 5323 } 5324 *__element = element; 5325 *__offset = offset; 5326 if (use_rx_sg && card->options.performance_stats) { 5327 card->perf_stats.sg_skbs_rx++; 5328 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5329 } 5330 return skb; 5331 no_mem: 5332 if (net_ratelimit()) { 5333 QETH_CARD_TEXT(card, 2, "noskbmem"); 5334 } 5335 card->stats.rx_dropped++; 5336 return NULL; 5337 } 5338 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5339 5340 int qeth_poll(struct napi_struct *napi, int budget) 5341 { 5342 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5343 int work_done = 0; 5344 struct qeth_qdio_buffer *buffer; 5345 int done; 5346 int new_budget = budget; 5347 5348 if (card->options.performance_stats) { 5349 card->perf_stats.inbound_cnt++; 5350 card->perf_stats.inbound_start_time = qeth_get_micros(); 5351 } 5352 5353 while (1) { 5354 if (!card->rx.b_count) { 5355 card->rx.qdio_err = 0; 5356 card->rx.b_count = qdio_get_next_buffers( 5357 card->data.ccwdev, 0, &card->rx.b_index, 5358 &card->rx.qdio_err); 5359 if (card->rx.b_count <= 0) { 5360 card->rx.b_count = 0; 5361 break; 5362 } 5363 card->rx.b_element = 5364 &card->qdio.in_q->bufs[card->rx.b_index] 5365 .buffer->element[0]; 5366 card->rx.e_offset = 0; 5367 } 5368 5369 while (card->rx.b_count) { 5370 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5371 if (!(card->rx.qdio_err && 5372 qeth_check_qdio_errors(card, buffer->buffer, 5373 card->rx.qdio_err, "qinerr"))) 5374 work_done += 5375 card->discipline->process_rx_buffer( 5376 card, new_budget, &done); 5377 else 5378 done = 1; 5379 5380 if (done) { 5381 if (card->options.performance_stats) 5382 card->perf_stats.bufs_rec++; 5383 qeth_put_buffer_pool_entry(card, 5384 buffer->pool_entry); 5385 qeth_queue_input_buffer(card, card->rx.b_index); 5386 card->rx.b_count--; 5387 if (card->rx.b_count) { 5388 card->rx.b_index = 5389 (card->rx.b_index + 1) % 5390 QDIO_MAX_BUFFERS_PER_Q; 5391 card->rx.b_element = 5392 &card->qdio.in_q 5393 ->bufs[card->rx.b_index] 5394 .buffer->element[0]; 5395 card->rx.e_offset = 0; 5396 } 5397 } 5398 5399 if (work_done >= budget) 5400 goto out; 5401 else 5402 new_budget = budget - work_done; 5403 } 5404 } 5405 5406 napi_complete_done(napi, work_done); 5407 if (qdio_start_irq(card->data.ccwdev, 0)) 5408 napi_schedule(&card->napi); 5409 out: 5410 if (card->options.performance_stats) 5411 card->perf_stats.inbound_time += qeth_get_micros() - 5412 card->perf_stats.inbound_start_time; 5413 return work_done; 5414 } 5415 EXPORT_SYMBOL_GPL(qeth_poll); 5416 5417 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5418 { 5419 if (!cmd->hdr.return_code) 5420 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5421 return cmd->hdr.return_code; 5422 } 5423 5424 int qeth_setassparms_cb(struct qeth_card *card, 5425 struct qeth_reply *reply, unsigned long data) 5426 { 5427 struct qeth_ipa_cmd *cmd; 5428 5429 QETH_CARD_TEXT(card, 4, "defadpcb"); 5430 5431 cmd = (struct qeth_ipa_cmd *) data; 5432 if (cmd->hdr.return_code == 0) { 5433 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5434 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5435 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5436 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5437 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5438 } 5439 return 0; 5440 } 5441 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5442 5443 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5444 enum qeth_ipa_funcs ipa_func, 5445 __u16 cmd_code, __u16 len, 5446 enum qeth_prot_versions prot) 5447 { 5448 struct qeth_cmd_buffer *iob; 5449 struct qeth_ipa_cmd *cmd; 5450 5451 QETH_CARD_TEXT(card, 4, "getasscm"); 5452 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5453 5454 if (iob) { 5455 cmd = __ipa_cmd(iob); 5456 cmd->data.setassparms.hdr.assist_no = ipa_func; 5457 cmd->data.setassparms.hdr.length = 8 + len; 5458 cmd->data.setassparms.hdr.command_code = cmd_code; 5459 cmd->data.setassparms.hdr.return_code = 0; 5460 cmd->data.setassparms.hdr.seq_no = 0; 5461 } 5462 5463 return iob; 5464 } 5465 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5466 5467 int qeth_send_setassparms(struct qeth_card *card, 5468 struct qeth_cmd_buffer *iob, __u16 len, long data, 5469 int (*reply_cb)(struct qeth_card *, 5470 struct qeth_reply *, unsigned long), 5471 void *reply_param) 5472 { 5473 int rc; 5474 struct qeth_ipa_cmd *cmd; 5475 5476 QETH_CARD_TEXT(card, 4, "sendassp"); 5477 5478 cmd = __ipa_cmd(iob); 5479 if (len <= sizeof(__u32)) 5480 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5481 else /* (len > sizeof(__u32)) */ 5482 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5483 5484 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5485 return rc; 5486 } 5487 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5488 5489 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 5490 enum qeth_ipa_funcs ipa_func, 5491 u16 cmd_code, long data, 5492 enum qeth_prot_versions prot) 5493 { 5494 int rc; 5495 int length = 0; 5496 struct qeth_cmd_buffer *iob; 5497 5498 QETH_CARD_TEXT_(card, 4, "simassp%i", prot); 5499 if (data) 5500 length = sizeof(__u32); 5501 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); 5502 if (!iob) 5503 return -ENOMEM; 5504 rc = qeth_send_setassparms(card, iob, length, data, 5505 qeth_setassparms_cb, NULL); 5506 return rc; 5507 } 5508 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 5509 5510 static void qeth_unregister_dbf_views(void) 5511 { 5512 int x; 5513 for (x = 0; x < QETH_DBF_INFOS; x++) { 5514 debug_unregister(qeth_dbf[x].id); 5515 qeth_dbf[x].id = NULL; 5516 } 5517 } 5518 5519 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5520 { 5521 char dbf_txt_buf[32]; 5522 va_list args; 5523 5524 if (!debug_level_enabled(id, level)) 5525 return; 5526 va_start(args, fmt); 5527 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5528 va_end(args); 5529 debug_text_event(id, level, dbf_txt_buf); 5530 } 5531 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5532 5533 static int qeth_register_dbf_views(void) 5534 { 5535 int ret; 5536 int x; 5537 5538 for (x = 0; x < QETH_DBF_INFOS; x++) { 5539 /* register the areas */ 5540 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5541 qeth_dbf[x].pages, 5542 qeth_dbf[x].areas, 5543 qeth_dbf[x].len); 5544 if (qeth_dbf[x].id == NULL) { 5545 qeth_unregister_dbf_views(); 5546 return -ENOMEM; 5547 } 5548 5549 /* register a view */ 5550 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5551 if (ret) { 5552 qeth_unregister_dbf_views(); 5553 return ret; 5554 } 5555 5556 /* set a passing level */ 5557 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5558 } 5559 5560 return 0; 5561 } 5562 5563 int qeth_core_load_discipline(struct qeth_card *card, 5564 enum qeth_discipline_id discipline) 5565 { 5566 int rc = 0; 5567 5568 mutex_lock(&qeth_mod_mutex); 5569 switch (discipline) { 5570 case QETH_DISCIPLINE_LAYER3: 5571 card->discipline = try_then_request_module( 5572 symbol_get(qeth_l3_discipline), "qeth_l3"); 5573 break; 5574 case QETH_DISCIPLINE_LAYER2: 5575 card->discipline = try_then_request_module( 5576 symbol_get(qeth_l2_discipline), "qeth_l2"); 5577 break; 5578 default: 5579 break; 5580 } 5581 5582 if (!card->discipline) { 5583 dev_err(&card->gdev->dev, "There is no kernel module to " 5584 "support discipline %d\n", discipline); 5585 rc = -EINVAL; 5586 } 5587 mutex_unlock(&qeth_mod_mutex); 5588 return rc; 5589 } 5590 5591 void qeth_core_free_discipline(struct qeth_card *card) 5592 { 5593 if (card->options.layer2) 5594 symbol_put(qeth_l2_discipline); 5595 else 5596 symbol_put(qeth_l3_discipline); 5597 card->discipline = NULL; 5598 } 5599 5600 const struct device_type qeth_generic_devtype = { 5601 .name = "qeth_generic", 5602 .groups = qeth_generic_attr_groups, 5603 }; 5604 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5605 5606 static const struct device_type qeth_osn_devtype = { 5607 .name = "qeth_osn", 5608 .groups = qeth_osn_attr_groups, 5609 }; 5610 5611 #define DBF_NAME_LEN 20 5612 5613 struct qeth_dbf_entry { 5614 char dbf_name[DBF_NAME_LEN]; 5615 debug_info_t *dbf_info; 5616 struct list_head dbf_list; 5617 }; 5618 5619 static LIST_HEAD(qeth_dbf_list); 5620 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5621 5622 static debug_info_t *qeth_get_dbf_entry(char *name) 5623 { 5624 struct qeth_dbf_entry *entry; 5625 debug_info_t *rc = NULL; 5626 5627 mutex_lock(&qeth_dbf_list_mutex); 5628 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5629 if (strcmp(entry->dbf_name, name) == 0) { 5630 rc = entry->dbf_info; 5631 break; 5632 } 5633 } 5634 mutex_unlock(&qeth_dbf_list_mutex); 5635 return rc; 5636 } 5637 5638 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5639 { 5640 struct qeth_dbf_entry *new_entry; 5641 5642 card->debug = debug_register(name, 2, 1, 8); 5643 if (!card->debug) { 5644 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5645 goto err; 5646 } 5647 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5648 goto err_dbg; 5649 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5650 if (!new_entry) 5651 goto err_dbg; 5652 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5653 new_entry->dbf_info = card->debug; 5654 mutex_lock(&qeth_dbf_list_mutex); 5655 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5656 mutex_unlock(&qeth_dbf_list_mutex); 5657 5658 return 0; 5659 5660 err_dbg: 5661 debug_unregister(card->debug); 5662 err: 5663 return -ENOMEM; 5664 } 5665 5666 static void qeth_clear_dbf_list(void) 5667 { 5668 struct qeth_dbf_entry *entry, *tmp; 5669 5670 mutex_lock(&qeth_dbf_list_mutex); 5671 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5672 list_del(&entry->dbf_list); 5673 debug_unregister(entry->dbf_info); 5674 kfree(entry); 5675 } 5676 mutex_unlock(&qeth_dbf_list_mutex); 5677 } 5678 5679 static struct net_device *qeth_alloc_netdev(struct qeth_card *card) 5680 { 5681 struct net_device *dev; 5682 5683 switch (card->info.type) { 5684 case QETH_CARD_TYPE_IQD: 5685 dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup); 5686 break; 5687 case QETH_CARD_TYPE_OSN: 5688 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); 5689 break; 5690 default: 5691 dev = alloc_etherdev(0); 5692 } 5693 5694 if (!dev) 5695 return NULL; 5696 5697 dev->ml_priv = card; 5698 dev->watchdog_timeo = QETH_TX_TIMEOUT; 5699 dev->min_mtu = IS_OSN(card) ? 64 : 576; 5700 /* initialized when device first goes online: */ 5701 dev->max_mtu = 0; 5702 dev->mtu = 0; 5703 SET_NETDEV_DEV(dev, &card->gdev->dev); 5704 netif_carrier_off(dev); 5705 5706 if (!IS_OSN(card)) { 5707 dev->priv_flags &= ~IFF_TX_SKB_SHARING; 5708 dev->hw_features |= NETIF_F_SG; 5709 dev->vlan_features |= NETIF_F_SG; 5710 if (IS_IQD(card)) 5711 dev->features |= NETIF_F_SG; 5712 } 5713 5714 return dev; 5715 } 5716 5717 struct net_device *qeth_clone_netdev(struct net_device *orig) 5718 { 5719 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv); 5720 5721 if (!clone) 5722 return NULL; 5723 5724 clone->dev_port = orig->dev_port; 5725 return clone; 5726 } 5727 5728 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5729 { 5730 struct qeth_card *card; 5731 struct device *dev; 5732 int rc; 5733 enum qeth_discipline_id enforced_disc; 5734 unsigned long flags; 5735 char dbf_name[DBF_NAME_LEN]; 5736 5737 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5738 5739 dev = &gdev->dev; 5740 if (!get_device(dev)) 5741 return -ENODEV; 5742 5743 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5744 5745 card = qeth_alloc_card(); 5746 if (!card) { 5747 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5748 rc = -ENOMEM; 5749 goto err_dev; 5750 } 5751 5752 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5753 dev_name(&gdev->dev)); 5754 card->debug = qeth_get_dbf_entry(dbf_name); 5755 if (!card->debug) { 5756 rc = qeth_add_dbf_entry(card, dbf_name); 5757 if (rc) 5758 goto err_card; 5759 } 5760 5761 card->read.ccwdev = gdev->cdev[0]; 5762 card->write.ccwdev = gdev->cdev[1]; 5763 card->data.ccwdev = gdev->cdev[2]; 5764 dev_set_drvdata(&gdev->dev, card); 5765 card->gdev = gdev; 5766 gdev->cdev[0]->handler = qeth_irq; 5767 gdev->cdev[1]->handler = qeth_irq; 5768 gdev->cdev[2]->handler = qeth_irq; 5769 5770 qeth_setup_card(card); 5771 qeth_update_from_chp_desc(card); 5772 5773 card->dev = qeth_alloc_netdev(card); 5774 if (!card->dev) { 5775 rc = -ENOMEM; 5776 goto err_card; 5777 } 5778 5779 qeth_determine_capabilities(card); 5780 enforced_disc = qeth_enforce_discipline(card); 5781 switch (enforced_disc) { 5782 case QETH_DISCIPLINE_UNDETERMINED: 5783 gdev->dev.type = &qeth_generic_devtype; 5784 break; 5785 default: 5786 card->info.layer_enforced = true; 5787 rc = qeth_core_load_discipline(card, enforced_disc); 5788 if (rc) 5789 goto err_load; 5790 5791 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5792 ? card->discipline->devtype 5793 : &qeth_osn_devtype; 5794 rc = card->discipline->setup(card->gdev); 5795 if (rc) 5796 goto err_disc; 5797 break; 5798 } 5799 5800 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5801 list_add_tail(&card->list, &qeth_core_card_list.list); 5802 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5803 return 0; 5804 5805 err_disc: 5806 qeth_core_free_discipline(card); 5807 err_load: 5808 free_netdev(card->dev); 5809 err_card: 5810 qeth_core_free_card(card); 5811 err_dev: 5812 put_device(dev); 5813 return rc; 5814 } 5815 5816 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5817 { 5818 unsigned long flags; 5819 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5820 5821 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5822 5823 if (card->discipline) { 5824 card->discipline->remove(gdev); 5825 qeth_core_free_discipline(card); 5826 } 5827 5828 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5829 list_del(&card->list); 5830 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5831 free_netdev(card->dev); 5832 qeth_core_free_card(card); 5833 dev_set_drvdata(&gdev->dev, NULL); 5834 put_device(&gdev->dev); 5835 } 5836 5837 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5838 { 5839 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5840 int rc = 0; 5841 enum qeth_discipline_id def_discipline; 5842 5843 if (!card->discipline) { 5844 if (card->info.type == QETH_CARD_TYPE_IQD) 5845 def_discipline = QETH_DISCIPLINE_LAYER3; 5846 else 5847 def_discipline = QETH_DISCIPLINE_LAYER2; 5848 rc = qeth_core_load_discipline(card, def_discipline); 5849 if (rc) 5850 goto err; 5851 rc = card->discipline->setup(card->gdev); 5852 if (rc) { 5853 qeth_core_free_discipline(card); 5854 goto err; 5855 } 5856 } 5857 rc = card->discipline->set_online(gdev); 5858 err: 5859 return rc; 5860 } 5861 5862 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5863 { 5864 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5865 return card->discipline->set_offline(gdev); 5866 } 5867 5868 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5869 { 5870 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5871 qeth_set_allowed_threads(card, 0, 1); 5872 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5873 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5874 qeth_qdio_clear_card(card, 0); 5875 qeth_clear_qdio_buffers(card); 5876 qdio_free(CARD_DDEV(card)); 5877 } 5878 5879 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5880 { 5881 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5882 if (card->discipline && card->discipline->freeze) 5883 return card->discipline->freeze(gdev); 5884 return 0; 5885 } 5886 5887 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5888 { 5889 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5890 if (card->discipline && card->discipline->thaw) 5891 return card->discipline->thaw(gdev); 5892 return 0; 5893 } 5894 5895 static int qeth_core_restore(struct ccwgroup_device *gdev) 5896 { 5897 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5898 if (card->discipline && card->discipline->restore) 5899 return card->discipline->restore(gdev); 5900 return 0; 5901 } 5902 5903 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5904 size_t count) 5905 { 5906 int err; 5907 5908 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3, 5909 buf); 5910 5911 return err ? err : count; 5912 } 5913 static DRIVER_ATTR_WO(group); 5914 5915 static struct attribute *qeth_drv_attrs[] = { 5916 &driver_attr_group.attr, 5917 NULL, 5918 }; 5919 static struct attribute_group qeth_drv_attr_group = { 5920 .attrs = qeth_drv_attrs, 5921 }; 5922 static const struct attribute_group *qeth_drv_attr_groups[] = { 5923 &qeth_drv_attr_group, 5924 NULL, 5925 }; 5926 5927 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5928 .driver = { 5929 .groups = qeth_drv_attr_groups, 5930 .owner = THIS_MODULE, 5931 .name = "qeth", 5932 }, 5933 .ccw_driver = &qeth_ccw_driver, 5934 .setup = qeth_core_probe_device, 5935 .remove = qeth_core_remove_device, 5936 .set_online = qeth_core_set_online, 5937 .set_offline = qeth_core_set_offline, 5938 .shutdown = qeth_core_shutdown, 5939 .prepare = NULL, 5940 .complete = NULL, 5941 .freeze = qeth_core_freeze, 5942 .thaw = qeth_core_thaw, 5943 .restore = qeth_core_restore, 5944 }; 5945 5946 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5947 { 5948 struct qeth_card *card = dev->ml_priv; 5949 struct mii_ioctl_data *mii_data; 5950 int rc = 0; 5951 5952 if (!card) 5953 return -ENODEV; 5954 5955 if (!qeth_card_hw_is_reachable(card)) 5956 return -ENODEV; 5957 5958 if (card->info.type == QETH_CARD_TYPE_OSN) 5959 return -EPERM; 5960 5961 switch (cmd) { 5962 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5963 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5964 break; 5965 case SIOC_QETH_GET_CARD_TYPE: 5966 if ((card->info.type == QETH_CARD_TYPE_OSD || 5967 card->info.type == QETH_CARD_TYPE_OSM || 5968 card->info.type == QETH_CARD_TYPE_OSX) && 5969 !card->info.guestlan) 5970 return 1; 5971 else 5972 return 0; 5973 case SIOCGMIIPHY: 5974 mii_data = if_mii(rq); 5975 mii_data->phy_id = 0; 5976 break; 5977 case SIOCGMIIREG: 5978 mii_data = if_mii(rq); 5979 if (mii_data->phy_id != 0) 5980 rc = -EINVAL; 5981 else 5982 mii_data->val_out = qeth_mdio_read(dev, 5983 mii_data->phy_id, mii_data->reg_num); 5984 break; 5985 case SIOC_QETH_QUERY_OAT: 5986 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5987 break; 5988 default: 5989 if (card->discipline->do_ioctl) 5990 rc = card->discipline->do_ioctl(dev, rq, cmd); 5991 else 5992 rc = -EOPNOTSUPP; 5993 } 5994 if (rc) 5995 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5996 return rc; 5997 } 5998 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5999 6000 static struct { 6001 const char str[ETH_GSTRING_LEN]; 6002 } qeth_ethtool_stats_keys[] = { 6003 /* 0 */{"rx skbs"}, 6004 {"rx buffers"}, 6005 {"tx skbs"}, 6006 {"tx buffers"}, 6007 {"tx skbs no packing"}, 6008 {"tx buffers no packing"}, 6009 {"tx skbs packing"}, 6010 {"tx buffers packing"}, 6011 {"tx sg skbs"}, 6012 {"tx buffer elements"}, 6013 /* 10 */{"rx sg skbs"}, 6014 {"rx sg frags"}, 6015 {"rx sg page allocs"}, 6016 {"tx large kbytes"}, 6017 {"tx large count"}, 6018 {"tx pk state ch n->p"}, 6019 {"tx pk state ch p->n"}, 6020 {"tx pk watermark low"}, 6021 {"tx pk watermark high"}, 6022 {"queue 0 buffer usage"}, 6023 /* 20 */{"queue 1 buffer usage"}, 6024 {"queue 2 buffer usage"}, 6025 {"queue 3 buffer usage"}, 6026 {"rx poll time"}, 6027 {"rx poll count"}, 6028 {"rx do_QDIO time"}, 6029 {"rx do_QDIO count"}, 6030 {"tx handler time"}, 6031 {"tx handler count"}, 6032 {"tx time"}, 6033 /* 30 */{"tx count"}, 6034 {"tx do_QDIO time"}, 6035 {"tx do_QDIO count"}, 6036 {"tx csum"}, 6037 {"tx lin"}, 6038 {"tx linfail"}, 6039 {"cq handler count"}, 6040 {"cq handler time"}, 6041 {"rx csum"} 6042 }; 6043 6044 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 6045 { 6046 switch (stringset) { 6047 case ETH_SS_STATS: 6048 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 6049 default: 6050 return -EINVAL; 6051 } 6052 } 6053 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 6054 6055 void qeth_core_get_ethtool_stats(struct net_device *dev, 6056 struct ethtool_stats *stats, u64 *data) 6057 { 6058 struct qeth_card *card = dev->ml_priv; 6059 data[0] = card->stats.rx_packets - 6060 card->perf_stats.initial_rx_packets; 6061 data[1] = card->perf_stats.bufs_rec; 6062 data[2] = card->stats.tx_packets - 6063 card->perf_stats.initial_tx_packets; 6064 data[3] = card->perf_stats.bufs_sent; 6065 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 6066 - card->perf_stats.skbs_sent_pack; 6067 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 6068 data[6] = card->perf_stats.skbs_sent_pack; 6069 data[7] = card->perf_stats.bufs_sent_pack; 6070 data[8] = card->perf_stats.sg_skbs_sent; 6071 data[9] = card->perf_stats.buf_elements_sent; 6072 data[10] = card->perf_stats.sg_skbs_rx; 6073 data[11] = card->perf_stats.sg_frags_rx; 6074 data[12] = card->perf_stats.sg_alloc_page_rx; 6075 data[13] = (card->perf_stats.large_send_bytes >> 10); 6076 data[14] = card->perf_stats.large_send_cnt; 6077 data[15] = card->perf_stats.sc_dp_p; 6078 data[16] = card->perf_stats.sc_p_dp; 6079 data[17] = QETH_LOW_WATERMARK_PACK; 6080 data[18] = QETH_HIGH_WATERMARK_PACK; 6081 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 6082 data[20] = (card->qdio.no_out_queues > 1) ? 6083 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 6084 data[21] = (card->qdio.no_out_queues > 2) ? 6085 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6086 data[22] = (card->qdio.no_out_queues > 3) ? 6087 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6088 data[23] = card->perf_stats.inbound_time; 6089 data[24] = card->perf_stats.inbound_cnt; 6090 data[25] = card->perf_stats.inbound_do_qdio_time; 6091 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6092 data[27] = card->perf_stats.outbound_handler_time; 6093 data[28] = card->perf_stats.outbound_handler_cnt; 6094 data[29] = card->perf_stats.outbound_time; 6095 data[30] = card->perf_stats.outbound_cnt; 6096 data[31] = card->perf_stats.outbound_do_qdio_time; 6097 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6098 data[33] = card->perf_stats.tx_csum; 6099 data[34] = card->perf_stats.tx_lin; 6100 data[35] = card->perf_stats.tx_linfail; 6101 data[36] = card->perf_stats.cq_cnt; 6102 data[37] = card->perf_stats.cq_time; 6103 data[38] = card->perf_stats.rx_csum; 6104 } 6105 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6106 6107 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6108 { 6109 switch (stringset) { 6110 case ETH_SS_STATS: 6111 memcpy(data, &qeth_ethtool_stats_keys, 6112 sizeof(qeth_ethtool_stats_keys)); 6113 break; 6114 default: 6115 WARN_ON(1); 6116 break; 6117 } 6118 } 6119 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6120 6121 void qeth_core_get_drvinfo(struct net_device *dev, 6122 struct ethtool_drvinfo *info) 6123 { 6124 struct qeth_card *card = dev->ml_priv; 6125 6126 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6127 sizeof(info->driver)); 6128 strlcpy(info->version, "1.0", sizeof(info->version)); 6129 strlcpy(info->fw_version, card->info.mcl_level, 6130 sizeof(info->fw_version)); 6131 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6132 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6133 } 6134 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6135 6136 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6137 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6138 /* Always advertise and support all speeds up to specified, and only one */ 6139 /* specified port type. */ 6140 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6141 int maxspeed, int porttype) 6142 { 6143 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6144 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6145 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6146 6147 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6148 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6149 6150 switch (porttype) { 6151 case PORT_TP: 6152 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6153 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6154 break; 6155 case PORT_FIBRE: 6156 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6157 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6158 break; 6159 default: 6160 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6161 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6162 WARN_ON_ONCE(1); 6163 } 6164 6165 /* fallthrough from high to low, to select all legal speeds: */ 6166 switch (maxspeed) { 6167 case SPEED_10000: 6168 ethtool_link_ksettings_add_link_mode(cmd, supported, 6169 10000baseT_Full); 6170 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6171 10000baseT_Full); 6172 case SPEED_1000: 6173 ethtool_link_ksettings_add_link_mode(cmd, supported, 6174 1000baseT_Full); 6175 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6176 1000baseT_Full); 6177 ethtool_link_ksettings_add_link_mode(cmd, supported, 6178 1000baseT_Half); 6179 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6180 1000baseT_Half); 6181 case SPEED_100: 6182 ethtool_link_ksettings_add_link_mode(cmd, supported, 6183 100baseT_Full); 6184 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6185 100baseT_Full); 6186 ethtool_link_ksettings_add_link_mode(cmd, supported, 6187 100baseT_Half); 6188 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6189 100baseT_Half); 6190 case SPEED_10: 6191 ethtool_link_ksettings_add_link_mode(cmd, supported, 6192 10baseT_Full); 6193 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6194 10baseT_Full); 6195 ethtool_link_ksettings_add_link_mode(cmd, supported, 6196 10baseT_Half); 6197 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6198 10baseT_Half); 6199 /* end fallthrough */ 6200 break; 6201 default: 6202 ethtool_link_ksettings_add_link_mode(cmd, supported, 6203 10baseT_Full); 6204 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6205 10baseT_Full); 6206 ethtool_link_ksettings_add_link_mode(cmd, supported, 6207 10baseT_Half); 6208 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6209 10baseT_Half); 6210 WARN_ON_ONCE(1); 6211 } 6212 } 6213 6214 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6215 struct ethtool_link_ksettings *cmd) 6216 { 6217 struct qeth_card *card = netdev->ml_priv; 6218 enum qeth_link_types link_type; 6219 struct carrier_info carrier_info; 6220 int rc; 6221 6222 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6223 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6224 else 6225 link_type = card->info.link_type; 6226 6227 cmd->base.duplex = DUPLEX_FULL; 6228 cmd->base.autoneg = AUTONEG_ENABLE; 6229 cmd->base.phy_address = 0; 6230 cmd->base.mdio_support = 0; 6231 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6232 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6233 6234 switch (link_type) { 6235 case QETH_LINK_TYPE_FAST_ETH: 6236 case QETH_LINK_TYPE_LANE_ETH100: 6237 cmd->base.speed = SPEED_100; 6238 cmd->base.port = PORT_TP; 6239 break; 6240 case QETH_LINK_TYPE_GBIT_ETH: 6241 case QETH_LINK_TYPE_LANE_ETH1000: 6242 cmd->base.speed = SPEED_1000; 6243 cmd->base.port = PORT_FIBRE; 6244 break; 6245 case QETH_LINK_TYPE_10GBIT_ETH: 6246 cmd->base.speed = SPEED_10000; 6247 cmd->base.port = PORT_FIBRE; 6248 break; 6249 default: 6250 cmd->base.speed = SPEED_10; 6251 cmd->base.port = PORT_TP; 6252 } 6253 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6254 6255 /* Check if we can obtain more accurate information. */ 6256 /* If QUERY_CARD_INFO command is not supported or fails, */ 6257 /* just return the heuristics that was filled above. */ 6258 if (!qeth_card_hw_is_reachable(card)) 6259 return -ENODEV; 6260 rc = qeth_query_card_info(card, &carrier_info); 6261 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6262 return 0; 6263 if (rc) /* report error from the hardware operation */ 6264 return rc; 6265 /* on success, fill in the information got from the hardware */ 6266 6267 netdev_dbg(netdev, 6268 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6269 carrier_info.card_type, 6270 carrier_info.port_mode, 6271 carrier_info.port_speed); 6272 6273 /* Update attributes for which we've obtained more authoritative */ 6274 /* information, leave the rest the way they where filled above. */ 6275 switch (carrier_info.card_type) { 6276 case CARD_INFO_TYPE_1G_COPPER_A: 6277 case CARD_INFO_TYPE_1G_COPPER_B: 6278 cmd->base.port = PORT_TP; 6279 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6280 break; 6281 case CARD_INFO_TYPE_1G_FIBRE_A: 6282 case CARD_INFO_TYPE_1G_FIBRE_B: 6283 cmd->base.port = PORT_FIBRE; 6284 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6285 break; 6286 case CARD_INFO_TYPE_10G_FIBRE_A: 6287 case CARD_INFO_TYPE_10G_FIBRE_B: 6288 cmd->base.port = PORT_FIBRE; 6289 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6290 break; 6291 } 6292 6293 switch (carrier_info.port_mode) { 6294 case CARD_INFO_PORTM_FULLDUPLEX: 6295 cmd->base.duplex = DUPLEX_FULL; 6296 break; 6297 case CARD_INFO_PORTM_HALFDUPLEX: 6298 cmd->base.duplex = DUPLEX_HALF; 6299 break; 6300 } 6301 6302 switch (carrier_info.port_speed) { 6303 case CARD_INFO_PORTS_10M: 6304 cmd->base.speed = SPEED_10; 6305 break; 6306 case CARD_INFO_PORTS_100M: 6307 cmd->base.speed = SPEED_100; 6308 break; 6309 case CARD_INFO_PORTS_1G: 6310 cmd->base.speed = SPEED_1000; 6311 break; 6312 case CARD_INFO_PORTS_10G: 6313 cmd->base.speed = SPEED_10000; 6314 break; 6315 } 6316 6317 return 0; 6318 } 6319 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6320 6321 /* Callback to handle checksum offload command reply from OSA card. 6322 * Verify that required features have been enabled on the card. 6323 * Return error in hdr->return_code as this value is checked by caller. 6324 * 6325 * Always returns zero to indicate no further messages from the OSA card. 6326 */ 6327 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6328 struct qeth_reply *reply, 6329 unsigned long data) 6330 { 6331 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6332 struct qeth_checksum_cmd *chksum_cb = 6333 (struct qeth_checksum_cmd *)reply->param; 6334 6335 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6336 if (qeth_setassparms_inspect_rc(cmd)) 6337 return 0; 6338 6339 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6340 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6341 chksum_cb->supported = 6342 cmd->data.setassparms.data.chksum.supported; 6343 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6344 } 6345 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6346 chksum_cb->supported = 6347 cmd->data.setassparms.data.chksum.supported; 6348 chksum_cb->enabled = 6349 cmd->data.setassparms.data.chksum.enabled; 6350 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6351 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6352 } 6353 return 0; 6354 } 6355 6356 /* Send command to OSA card and check results. */ 6357 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6358 enum qeth_ipa_funcs ipa_func, 6359 __u16 cmd_code, long data, 6360 struct qeth_checksum_cmd *chksum_cb, 6361 enum qeth_prot_versions prot) 6362 { 6363 struct qeth_cmd_buffer *iob; 6364 int rc = -ENOMEM; 6365 6366 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6367 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6368 sizeof(__u32), prot); 6369 if (iob) 6370 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6371 qeth_ipa_checksum_run_cmd_cb, 6372 chksum_cb); 6373 return rc; 6374 } 6375 6376 static int qeth_send_checksum_on(struct qeth_card *card, int cstype, 6377 enum qeth_prot_versions prot) 6378 { 6379 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; 6380 struct qeth_checksum_cmd chksum_cb; 6381 int rc; 6382 6383 if (prot == QETH_PROT_IPV4) 6384 required_features |= QETH_IPA_CHECKSUM_IP_HDR; 6385 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6386 &chksum_cb, prot); 6387 if (!rc) { 6388 if ((required_features & chksum_cb.supported) != 6389 required_features) 6390 rc = -EIO; 6391 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6392 cstype == IPA_INBOUND_CHECKSUM) 6393 dev_warn(&card->gdev->dev, 6394 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6395 QETH_CARD_IFNAME(card)); 6396 } 6397 if (rc) { 6398 qeth_send_simple_setassparms_prot(card, cstype, 6399 IPA_CMD_ASS_STOP, 0, prot); 6400 dev_warn(&card->gdev->dev, 6401 "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n", 6402 prot, QETH_CARD_IFNAME(card)); 6403 return rc; 6404 } 6405 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6406 chksum_cb.supported, &chksum_cb, 6407 prot); 6408 if (!rc) { 6409 if ((required_features & chksum_cb.enabled) != 6410 required_features) 6411 rc = -EIO; 6412 } 6413 if (rc) { 6414 qeth_send_simple_setassparms_prot(card, cstype, 6415 IPA_CMD_ASS_STOP, 0, prot); 6416 dev_warn(&card->gdev->dev, 6417 "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n", 6418 prot, QETH_CARD_IFNAME(card)); 6419 return rc; 6420 } 6421 6422 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", 6423 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); 6424 return 0; 6425 } 6426 6427 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, 6428 enum qeth_prot_versions prot) 6429 { 6430 int rc = (on) ? qeth_send_checksum_on(card, cstype, prot) 6431 : qeth_send_simple_setassparms_prot(card, cstype, 6432 IPA_CMD_ASS_STOP, 0, 6433 prot); 6434 return rc ? -EIO : 0; 6435 } 6436 6437 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6438 { 6439 int rc; 6440 6441 QETH_CARD_TEXT(card, 3, "sttso"); 6442 6443 if (on) { 6444 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6445 IPA_CMD_ASS_START, 0); 6446 if (rc) { 6447 dev_warn(&card->gdev->dev, 6448 "Starting outbound TCP segmentation offload for %s failed\n", 6449 QETH_CARD_IFNAME(card)); 6450 return -EIO; 6451 } 6452 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6453 } else { 6454 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6455 IPA_CMD_ASS_STOP, 0); 6456 } 6457 return rc; 6458 } 6459 6460 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) 6461 { 6462 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; 6463 int rc_ipv6; 6464 6465 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6466 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6467 QETH_PROT_IPV4); 6468 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6469 /* no/one Offload Assist available, so the rc is trivial */ 6470 return rc_ipv4; 6471 6472 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6473 QETH_PROT_IPV6); 6474 6475 if (on) 6476 /* enable: success if any Assist is active */ 6477 return (rc_ipv6) ? rc_ipv4 : 0; 6478 6479 /* disable: failure if any Assist is still active */ 6480 return (rc_ipv6) ? rc_ipv6 : rc_ipv4; 6481 } 6482 6483 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \ 6484 NETIF_F_IPV6_CSUM) 6485 /** 6486 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features 6487 * @dev: a net_device 6488 */ 6489 void qeth_enable_hw_features(struct net_device *dev) 6490 { 6491 struct qeth_card *card = dev->ml_priv; 6492 netdev_features_t features; 6493 6494 rtnl_lock(); 6495 features = dev->features; 6496 /* force-off any feature that needs an IPA sequence. 6497 * netdev_update_features() will restart them. 6498 */ 6499 dev->features &= ~QETH_HW_FEATURES; 6500 netdev_update_features(dev); 6501 if (features != dev->features) 6502 dev_warn(&card->gdev->dev, 6503 "Device recovery failed to restore all offload features\n"); 6504 rtnl_unlock(); 6505 } 6506 EXPORT_SYMBOL_GPL(qeth_enable_hw_features); 6507 6508 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6509 { 6510 struct qeth_card *card = dev->ml_priv; 6511 netdev_features_t changed = dev->features ^ features; 6512 int rc = 0; 6513 6514 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6515 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6516 6517 if ((changed & NETIF_F_IP_CSUM)) { 6518 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, 6519 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); 6520 if (rc) 6521 changed ^= NETIF_F_IP_CSUM; 6522 } 6523 if (changed & NETIF_F_IPV6_CSUM) { 6524 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, 6525 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); 6526 if (rc) 6527 changed ^= NETIF_F_IPV6_CSUM; 6528 } 6529 if (changed & NETIF_F_RXCSUM) { 6530 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); 6531 if (rc) 6532 changed ^= NETIF_F_RXCSUM; 6533 } 6534 if ((changed & NETIF_F_TSO)) { 6535 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6536 if (rc) 6537 changed ^= NETIF_F_TSO; 6538 } 6539 6540 /* everything changed successfully? */ 6541 if ((dev->features ^ features) == changed) 6542 return 0; 6543 /* something went wrong. save changed features and return error */ 6544 dev->features ^= changed; 6545 return -EIO; 6546 } 6547 EXPORT_SYMBOL_GPL(qeth_set_features); 6548 6549 netdev_features_t qeth_fix_features(struct net_device *dev, 6550 netdev_features_t features) 6551 { 6552 struct qeth_card *card = dev->ml_priv; 6553 6554 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6555 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6556 features &= ~NETIF_F_IP_CSUM; 6557 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) 6558 features &= ~NETIF_F_IPV6_CSUM; 6559 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && 6560 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6561 features &= ~NETIF_F_RXCSUM; 6562 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6563 features &= ~NETIF_F_TSO; 6564 /* if the card isn't up, remove features that require hw changes */ 6565 if (card->state == CARD_STATE_DOWN || 6566 card->state == CARD_STATE_RECOVER) 6567 features &= ~QETH_HW_FEATURES; 6568 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6569 return features; 6570 } 6571 EXPORT_SYMBOL_GPL(qeth_fix_features); 6572 6573 netdev_features_t qeth_features_check(struct sk_buff *skb, 6574 struct net_device *dev, 6575 netdev_features_t features) 6576 { 6577 /* GSO segmentation builds skbs with 6578 * a (small) linear part for the headers, and 6579 * page frags for the data. 6580 * Compared to a linear skb, the header-only part consumes an 6581 * additional buffer element. This reduces buffer utilization, and 6582 * hurts throughput. So compress small segments into one element. 6583 */ 6584 if (netif_needs_gso(skb, features)) { 6585 /* match skb_segment(): */ 6586 unsigned int doffset = skb->data - skb_mac_header(skb); 6587 unsigned int hsize = skb_shinfo(skb)->gso_size; 6588 unsigned int hroom = skb_headroom(skb); 6589 6590 /* linearize only if resulting skb allocations are order-0: */ 6591 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6592 features &= ~NETIF_F_SG; 6593 } 6594 6595 return vlan_features_check(skb, features); 6596 } 6597 EXPORT_SYMBOL_GPL(qeth_features_check); 6598 6599 static int __init qeth_core_init(void) 6600 { 6601 int rc; 6602 6603 pr_info("loading core functions\n"); 6604 INIT_LIST_HEAD(&qeth_core_card_list.list); 6605 INIT_LIST_HEAD(&qeth_dbf_list); 6606 rwlock_init(&qeth_core_card_list.rwlock); 6607 mutex_init(&qeth_mod_mutex); 6608 6609 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6610 if (!qeth_wq) { 6611 rc = -ENOMEM; 6612 goto out_err; 6613 } 6614 6615 rc = qeth_register_dbf_views(); 6616 if (rc) 6617 goto dbf_err; 6618 qeth_core_root_dev = root_device_register("qeth"); 6619 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6620 if (rc) 6621 goto register_err; 6622 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6623 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6624 if (!qeth_core_header_cache) { 6625 rc = -ENOMEM; 6626 goto slab_err; 6627 } 6628 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6629 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6630 if (!qeth_qdio_outbuf_cache) { 6631 rc = -ENOMEM; 6632 goto cqslab_err; 6633 } 6634 rc = ccw_driver_register(&qeth_ccw_driver); 6635 if (rc) 6636 goto ccw_err; 6637 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6638 if (rc) 6639 goto ccwgroup_err; 6640 6641 return 0; 6642 6643 ccwgroup_err: 6644 ccw_driver_unregister(&qeth_ccw_driver); 6645 ccw_err: 6646 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6647 cqslab_err: 6648 kmem_cache_destroy(qeth_core_header_cache); 6649 slab_err: 6650 root_device_unregister(qeth_core_root_dev); 6651 register_err: 6652 qeth_unregister_dbf_views(); 6653 dbf_err: 6654 destroy_workqueue(qeth_wq); 6655 out_err: 6656 pr_err("Initializing the qeth device driver failed\n"); 6657 return rc; 6658 } 6659 6660 static void __exit qeth_core_exit(void) 6661 { 6662 qeth_clear_dbf_list(); 6663 destroy_workqueue(qeth_wq); 6664 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6665 ccw_driver_unregister(&qeth_ccw_driver); 6666 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6667 kmem_cache_destroy(qeth_core_header_cache); 6668 root_device_unregister(qeth_core_root_dev); 6669 qeth_unregister_dbf_views(); 6670 pr_info("core functions removed\n"); 6671 } 6672 6673 module_init(qeth_core_init); 6674 module_exit(qeth_core_exit); 6675 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6676 MODULE_DESCRIPTION("qeth core functions"); 6677 MODULE_LICENSE("GPL"); 6678