1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/compat.h> 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/string.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/ip.h> 20 #include <linux/tcp.h> 21 #include <linux/mii.h> 22 #include <linux/kthread.h> 23 #include <linux/slab.h> 24 #include <linux/if_vlan.h> 25 #include <linux/netdevice.h> 26 #include <linux/netdev_features.h> 27 #include <linux/skbuff.h> 28 29 #include <net/iucv/af_iucv.h> 30 #include <net/dsfield.h> 31 32 #include <asm/ebcdic.h> 33 #include <asm/chpid.h> 34 #include <asm/io.h> 35 #include <asm/sysinfo.h> 36 #include <asm/diag.h> 37 #include <asm/cio.h> 38 #include <asm/ccwdev.h> 39 #include <asm/cpcmd.h> 40 41 #include "qeth_core.h" 42 43 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 44 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 45 /* N P A M L V H */ 46 [QETH_DBF_SETUP] = {"qeth_setup", 47 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 48 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 49 &debug_sprintf_view, NULL}, 50 [QETH_DBF_CTRL] = {"qeth_control", 51 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 52 }; 53 EXPORT_SYMBOL_GPL(qeth_dbf); 54 55 struct qeth_card_list_struct qeth_core_card_list; 56 EXPORT_SYMBOL_GPL(qeth_core_card_list); 57 struct kmem_cache *qeth_core_header_cache; 58 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 59 static struct kmem_cache *qeth_qdio_outbuf_cache; 60 61 static struct device *qeth_core_root_dev; 62 static struct lock_class_key qdio_out_skb_queue_key; 63 static struct mutex qeth_mod_mutex; 64 65 static void qeth_send_control_data_cb(struct qeth_channel *, 66 struct qeth_cmd_buffer *); 67 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 68 static void qeth_free_buffer_pool(struct qeth_card *); 69 static int qeth_qdio_establish(struct qeth_card *); 70 static void qeth_free_qdio_buffers(struct qeth_card *); 71 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 72 struct qeth_qdio_out_buffer *buf, 73 enum iucv_tx_notify notification); 74 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 75 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 76 77 struct workqueue_struct *qeth_wq; 78 EXPORT_SYMBOL_GPL(qeth_wq); 79 80 int qeth_card_hw_is_reachable(struct qeth_card *card) 81 { 82 return (card->state == CARD_STATE_SOFTSETUP) || 83 (card->state == CARD_STATE_UP); 84 } 85 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 86 87 static void qeth_close_dev_handler(struct work_struct *work) 88 { 89 struct qeth_card *card; 90 91 card = container_of(work, struct qeth_card, close_dev_work); 92 QETH_CARD_TEXT(card, 2, "cldevhdl"); 93 rtnl_lock(); 94 dev_close(card->dev); 95 rtnl_unlock(); 96 ccwgroup_set_offline(card->gdev); 97 } 98 99 void qeth_close_dev(struct qeth_card *card) 100 { 101 QETH_CARD_TEXT(card, 2, "cldevsubm"); 102 queue_work(qeth_wq, &card->close_dev_work); 103 } 104 EXPORT_SYMBOL_GPL(qeth_close_dev); 105 106 static const char *qeth_get_cardname(struct qeth_card *card) 107 { 108 if (card->info.guestlan) { 109 switch (card->info.type) { 110 case QETH_CARD_TYPE_OSD: 111 return " Virtual NIC QDIO"; 112 case QETH_CARD_TYPE_IQD: 113 return " Virtual NIC Hiper"; 114 case QETH_CARD_TYPE_OSM: 115 return " Virtual NIC QDIO - OSM"; 116 case QETH_CARD_TYPE_OSX: 117 return " Virtual NIC QDIO - OSX"; 118 default: 119 return " unknown"; 120 } 121 } else { 122 switch (card->info.type) { 123 case QETH_CARD_TYPE_OSD: 124 return " OSD Express"; 125 case QETH_CARD_TYPE_IQD: 126 return " HiperSockets"; 127 case QETH_CARD_TYPE_OSN: 128 return " OSN QDIO"; 129 case QETH_CARD_TYPE_OSM: 130 return " OSM QDIO"; 131 case QETH_CARD_TYPE_OSX: 132 return " OSX QDIO"; 133 default: 134 return " unknown"; 135 } 136 } 137 return " n/a"; 138 } 139 140 /* max length to be returned: 14 */ 141 const char *qeth_get_cardname_short(struct qeth_card *card) 142 { 143 if (card->info.guestlan) { 144 switch (card->info.type) { 145 case QETH_CARD_TYPE_OSD: 146 return "Virt.NIC QDIO"; 147 case QETH_CARD_TYPE_IQD: 148 return "Virt.NIC Hiper"; 149 case QETH_CARD_TYPE_OSM: 150 return "Virt.NIC OSM"; 151 case QETH_CARD_TYPE_OSX: 152 return "Virt.NIC OSX"; 153 default: 154 return "unknown"; 155 } 156 } else { 157 switch (card->info.type) { 158 case QETH_CARD_TYPE_OSD: 159 switch (card->info.link_type) { 160 case QETH_LINK_TYPE_FAST_ETH: 161 return "OSD_100"; 162 case QETH_LINK_TYPE_HSTR: 163 return "HSTR"; 164 case QETH_LINK_TYPE_GBIT_ETH: 165 return "OSD_1000"; 166 case QETH_LINK_TYPE_10GBIT_ETH: 167 return "OSD_10GIG"; 168 case QETH_LINK_TYPE_LANE_ETH100: 169 return "OSD_FE_LANE"; 170 case QETH_LINK_TYPE_LANE_TR: 171 return "OSD_TR_LANE"; 172 case QETH_LINK_TYPE_LANE_ETH1000: 173 return "OSD_GbE_LANE"; 174 case QETH_LINK_TYPE_LANE: 175 return "OSD_ATM_LANE"; 176 default: 177 return "OSD_Express"; 178 } 179 case QETH_CARD_TYPE_IQD: 180 return "HiperSockets"; 181 case QETH_CARD_TYPE_OSN: 182 return "OSN"; 183 case QETH_CARD_TYPE_OSM: 184 return "OSM_1000"; 185 case QETH_CARD_TYPE_OSX: 186 return "OSX_10GIG"; 187 default: 188 return "unknown"; 189 } 190 } 191 return "n/a"; 192 } 193 194 void qeth_set_recovery_task(struct qeth_card *card) 195 { 196 card->recovery_task = current; 197 } 198 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 199 200 void qeth_clear_recovery_task(struct qeth_card *card) 201 { 202 card->recovery_task = NULL; 203 } 204 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 205 206 static bool qeth_is_recovery_task(const struct qeth_card *card) 207 { 208 return card->recovery_task == current; 209 } 210 211 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 212 int clear_start_mask) 213 { 214 unsigned long flags; 215 216 spin_lock_irqsave(&card->thread_mask_lock, flags); 217 card->thread_allowed_mask = threads; 218 if (clear_start_mask) 219 card->thread_start_mask &= threads; 220 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 221 wake_up(&card->wait_q); 222 } 223 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 224 225 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 226 { 227 unsigned long flags; 228 int rc = 0; 229 230 spin_lock_irqsave(&card->thread_mask_lock, flags); 231 rc = (card->thread_running_mask & threads); 232 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 233 return rc; 234 } 235 EXPORT_SYMBOL_GPL(qeth_threads_running); 236 237 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 238 { 239 if (qeth_is_recovery_task(card)) 240 return 0; 241 return wait_event_interruptible(card->wait_q, 242 qeth_threads_running(card, threads) == 0); 243 } 244 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 245 246 void qeth_clear_working_pool_list(struct qeth_card *card) 247 { 248 struct qeth_buffer_pool_entry *pool_entry, *tmp; 249 250 QETH_CARD_TEXT(card, 5, "clwrklst"); 251 list_for_each_entry_safe(pool_entry, tmp, 252 &card->qdio.in_buf_pool.entry_list, list){ 253 list_del(&pool_entry->list); 254 } 255 } 256 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 257 258 static int qeth_alloc_buffer_pool(struct qeth_card *card) 259 { 260 struct qeth_buffer_pool_entry *pool_entry; 261 void *ptr; 262 int i, j; 263 264 QETH_CARD_TEXT(card, 5, "alocpool"); 265 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 266 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 267 if (!pool_entry) { 268 qeth_free_buffer_pool(card); 269 return -ENOMEM; 270 } 271 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 272 ptr = (void *) __get_free_page(GFP_KERNEL); 273 if (!ptr) { 274 while (j > 0) 275 free_page((unsigned long) 276 pool_entry->elements[--j]); 277 kfree(pool_entry); 278 qeth_free_buffer_pool(card); 279 return -ENOMEM; 280 } 281 pool_entry->elements[j] = ptr; 282 } 283 list_add(&pool_entry->init_list, 284 &card->qdio.init_pool.entry_list); 285 } 286 return 0; 287 } 288 289 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 290 { 291 QETH_CARD_TEXT(card, 2, "realcbp"); 292 293 if ((card->state != CARD_STATE_DOWN) && 294 (card->state != CARD_STATE_RECOVER)) 295 return -EPERM; 296 297 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 298 qeth_clear_working_pool_list(card); 299 qeth_free_buffer_pool(card); 300 card->qdio.in_buf_pool.buf_count = bufcnt; 301 card->qdio.init_pool.buf_count = bufcnt; 302 return qeth_alloc_buffer_pool(card); 303 } 304 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 305 306 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 307 { 308 if (!q) 309 return; 310 311 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 312 kfree(q); 313 } 314 315 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 316 { 317 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 318 int i; 319 320 if (!q) 321 return NULL; 322 323 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 324 kfree(q); 325 return NULL; 326 } 327 328 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 329 q->bufs[i].buffer = q->qdio_bufs[i]; 330 331 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 332 return q; 333 } 334 335 static int qeth_cq_init(struct qeth_card *card) 336 { 337 int rc; 338 339 if (card->options.cq == QETH_CQ_ENABLED) { 340 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 341 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 342 QDIO_MAX_BUFFERS_PER_Q); 343 card->qdio.c_q->next_buf_to_init = 127; 344 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 345 card->qdio.no_in_queues - 1, 0, 346 127); 347 if (rc) { 348 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 349 goto out; 350 } 351 } 352 rc = 0; 353 out: 354 return rc; 355 } 356 357 static int qeth_alloc_cq(struct qeth_card *card) 358 { 359 int rc; 360 361 if (card->options.cq == QETH_CQ_ENABLED) { 362 int i; 363 struct qdio_outbuf_state *outbuf_states; 364 365 QETH_DBF_TEXT(SETUP, 2, "cqon"); 366 card->qdio.c_q = qeth_alloc_qdio_queue(); 367 if (!card->qdio.c_q) { 368 rc = -1; 369 goto kmsg_out; 370 } 371 card->qdio.no_in_queues = 2; 372 card->qdio.out_bufstates = 373 kcalloc(card->qdio.no_out_queues * 374 QDIO_MAX_BUFFERS_PER_Q, 375 sizeof(struct qdio_outbuf_state), 376 GFP_KERNEL); 377 outbuf_states = card->qdio.out_bufstates; 378 if (outbuf_states == NULL) { 379 rc = -1; 380 goto free_cq_out; 381 } 382 for (i = 0; i < card->qdio.no_out_queues; ++i) { 383 card->qdio.out_qs[i]->bufstates = outbuf_states; 384 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 385 } 386 } else { 387 QETH_DBF_TEXT(SETUP, 2, "nocq"); 388 card->qdio.c_q = NULL; 389 card->qdio.no_in_queues = 1; 390 } 391 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 392 rc = 0; 393 out: 394 return rc; 395 free_cq_out: 396 qeth_free_qdio_queue(card->qdio.c_q); 397 card->qdio.c_q = NULL; 398 kmsg_out: 399 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 400 goto out; 401 } 402 403 static void qeth_free_cq(struct qeth_card *card) 404 { 405 if (card->qdio.c_q) { 406 --card->qdio.no_in_queues; 407 qeth_free_qdio_queue(card->qdio.c_q); 408 card->qdio.c_q = NULL; 409 } 410 kfree(card->qdio.out_bufstates); 411 card->qdio.out_bufstates = NULL; 412 } 413 414 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 415 int delayed) 416 { 417 enum iucv_tx_notify n; 418 419 switch (sbalf15) { 420 case 0: 421 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 422 break; 423 case 4: 424 case 16: 425 case 17: 426 case 18: 427 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 428 TX_NOTIFY_UNREACHABLE; 429 break; 430 default: 431 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 432 TX_NOTIFY_GENERALERROR; 433 break; 434 } 435 436 return n; 437 } 438 439 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 440 int forced_cleanup) 441 { 442 if (q->card->options.cq != QETH_CQ_ENABLED) 443 return; 444 445 if (q->bufs[bidx]->next_pending != NULL) { 446 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 447 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 448 449 while (c) { 450 if (forced_cleanup || 451 atomic_read(&c->state) == 452 QETH_QDIO_BUF_HANDLED_DELAYED) { 453 struct qeth_qdio_out_buffer *f = c; 454 QETH_CARD_TEXT(f->q->card, 5, "fp"); 455 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 456 /* release here to avoid interleaving between 457 outbound tasklet and inbound tasklet 458 regarding notifications and lifecycle */ 459 qeth_release_skbs(c); 460 461 c = f->next_pending; 462 WARN_ON_ONCE(head->next_pending != f); 463 head->next_pending = c; 464 kmem_cache_free(qeth_qdio_outbuf_cache, f); 465 } else { 466 head = c; 467 c = c->next_pending; 468 } 469 470 } 471 } 472 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 473 QETH_QDIO_BUF_HANDLED_DELAYED)) { 474 /* for recovery situations */ 475 qeth_init_qdio_out_buf(q, bidx); 476 QETH_CARD_TEXT(q->card, 2, "clprecov"); 477 } 478 } 479 480 481 static void qeth_qdio_handle_aob(struct qeth_card *card, 482 unsigned long phys_aob_addr) 483 { 484 struct qaob *aob; 485 struct qeth_qdio_out_buffer *buffer; 486 enum iucv_tx_notify notification; 487 unsigned int i; 488 489 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 490 QETH_CARD_TEXT(card, 5, "haob"); 491 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 492 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 493 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 494 495 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 496 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 497 notification = TX_NOTIFY_OK; 498 } else { 499 WARN_ON_ONCE(atomic_read(&buffer->state) != 500 QETH_QDIO_BUF_PENDING); 501 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 502 notification = TX_NOTIFY_DELAYED_OK; 503 } 504 505 if (aob->aorc != 0) { 506 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 507 notification = qeth_compute_cq_notification(aob->aorc, 1); 508 } 509 qeth_notify_skbs(buffer->q, buffer, notification); 510 511 /* Free dangling allocations. The attached skbs are handled by 512 * qeth_cleanup_handled_pending(). 513 */ 514 for (i = 0; 515 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card); 516 i++) { 517 if (aob->sba[i] && buffer->is_header[i]) 518 kmem_cache_free(qeth_core_header_cache, 519 (void *) aob->sba[i]); 520 } 521 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED); 522 523 qdio_release_aob(aob); 524 } 525 526 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 527 { 528 return card->options.cq == QETH_CQ_ENABLED && 529 card->qdio.c_q != NULL && 530 queue != 0 && 531 queue == card->qdio.no_in_queues - 1; 532 } 533 534 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data) 535 { 536 ccw->cmd_code = cmd_code; 537 ccw->flags = CCW_FLAG_SLI; 538 ccw->count = len; 539 ccw->cda = (__u32) __pa(data); 540 } 541 542 static int __qeth_issue_next_read(struct qeth_card *card) 543 { 544 struct qeth_channel *channel = &card->read; 545 struct qeth_cmd_buffer *iob; 546 int rc; 547 548 QETH_CARD_TEXT(card, 5, "issnxrd"); 549 if (channel->state != CH_STATE_UP) 550 return -EIO; 551 iob = qeth_get_buffer(channel); 552 if (!iob) { 553 dev_warn(&card->gdev->dev, "The qeth device driver " 554 "failed to recover an error on the device\n"); 555 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 556 "available\n", dev_name(&card->gdev->dev)); 557 return -ENOMEM; 558 } 559 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data); 560 QETH_CARD_TEXT(card, 6, "noirqpnd"); 561 rc = ccw_device_start(channel->ccwdev, channel->ccw, 562 (addr_t) iob, 0, 0); 563 if (rc) { 564 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 565 "rc=%i\n", dev_name(&card->gdev->dev), rc); 566 atomic_set(&channel->irq_pending, 0); 567 card->read_or_write_problem = 1; 568 qeth_schedule_recovery(card); 569 wake_up(&card->wait_q); 570 } 571 return rc; 572 } 573 574 static int qeth_issue_next_read(struct qeth_card *card) 575 { 576 int ret; 577 578 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 579 ret = __qeth_issue_next_read(card); 580 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 581 582 return ret; 583 } 584 585 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 586 { 587 struct qeth_reply *reply; 588 589 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 590 if (reply) { 591 refcount_set(&reply->refcnt, 1); 592 atomic_set(&reply->received, 0); 593 reply->card = card; 594 } 595 return reply; 596 } 597 598 static void qeth_get_reply(struct qeth_reply *reply) 599 { 600 refcount_inc(&reply->refcnt); 601 } 602 603 static void qeth_put_reply(struct qeth_reply *reply) 604 { 605 if (refcount_dec_and_test(&reply->refcnt)) 606 kfree(reply); 607 } 608 609 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 610 struct qeth_card *card) 611 { 612 char *ipa_name; 613 int com = cmd->hdr.command; 614 ipa_name = qeth_get_ipa_cmd_name(com); 615 if (rc) 616 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 617 "x%X \"%s\"\n", 618 ipa_name, com, dev_name(&card->gdev->dev), 619 QETH_CARD_IFNAME(card), rc, 620 qeth_get_ipa_msg(rc)); 621 else 622 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 623 ipa_name, com, dev_name(&card->gdev->dev), 624 QETH_CARD_IFNAME(card)); 625 } 626 627 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 628 struct qeth_cmd_buffer *iob) 629 { 630 struct qeth_ipa_cmd *cmd = NULL; 631 632 QETH_CARD_TEXT(card, 5, "chkipad"); 633 if (IS_IPA(iob->data)) { 634 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 635 if (IS_IPA_REPLY(cmd)) { 636 if (cmd->hdr.command != IPA_CMD_SETCCID && 637 cmd->hdr.command != IPA_CMD_DELCCID && 638 cmd->hdr.command != IPA_CMD_MODCCID && 639 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 640 qeth_issue_ipa_msg(cmd, 641 cmd->hdr.return_code, card); 642 return cmd; 643 } else { 644 switch (cmd->hdr.command) { 645 case IPA_CMD_STOPLAN: 646 if (cmd->hdr.return_code == 647 IPA_RC_VEPA_TO_VEB_TRANSITION) { 648 dev_err(&card->gdev->dev, 649 "Interface %s is down because the " 650 "adjacent port is no longer in " 651 "reflective relay mode\n", 652 QETH_CARD_IFNAME(card)); 653 qeth_close_dev(card); 654 } else { 655 dev_warn(&card->gdev->dev, 656 "The link for interface %s on CHPID" 657 " 0x%X failed\n", 658 QETH_CARD_IFNAME(card), 659 card->info.chpid); 660 qeth_issue_ipa_msg(cmd, 661 cmd->hdr.return_code, card); 662 } 663 card->lan_online = 0; 664 netif_carrier_off(card->dev); 665 return NULL; 666 case IPA_CMD_STARTLAN: 667 dev_info(&card->gdev->dev, 668 "The link for %s on CHPID 0x%X has" 669 " been restored\n", 670 QETH_CARD_IFNAME(card), 671 card->info.chpid); 672 netif_carrier_on(card->dev); 673 card->lan_online = 1; 674 if (card->info.hwtrap) 675 card->info.hwtrap = 2; 676 qeth_schedule_recovery(card); 677 return NULL; 678 case IPA_CMD_SETBRIDGEPORT_IQD: 679 case IPA_CMD_SETBRIDGEPORT_OSA: 680 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 681 if (card->discipline->control_event_handler 682 (card, cmd)) 683 return cmd; 684 else 685 return NULL; 686 case IPA_CMD_MODCCID: 687 return cmd; 688 case IPA_CMD_REGISTER_LOCAL_ADDR: 689 QETH_CARD_TEXT(card, 3, "irla"); 690 break; 691 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 692 QETH_CARD_TEXT(card, 3, "urla"); 693 break; 694 default: 695 QETH_DBF_MESSAGE(2, "Received data is IPA " 696 "but not a reply!\n"); 697 break; 698 } 699 } 700 } 701 return cmd; 702 } 703 704 void qeth_clear_ipacmd_list(struct qeth_card *card) 705 { 706 struct qeth_reply *reply, *r; 707 unsigned long flags; 708 709 QETH_CARD_TEXT(card, 4, "clipalst"); 710 711 spin_lock_irqsave(&card->lock, flags); 712 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 713 qeth_get_reply(reply); 714 reply->rc = -EIO; 715 atomic_inc(&reply->received); 716 list_del_init(&reply->list); 717 wake_up(&reply->wait_q); 718 qeth_put_reply(reply); 719 } 720 spin_unlock_irqrestore(&card->lock, flags); 721 } 722 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 723 724 static int qeth_check_idx_response(struct qeth_card *card, 725 unsigned char *buffer) 726 { 727 if (!buffer) 728 return 0; 729 730 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 731 if ((buffer[2] & 0xc0) == 0xc0) { 732 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n", 733 buffer[4]); 734 QETH_CARD_TEXT(card, 2, "ckidxres"); 735 QETH_CARD_TEXT(card, 2, " idxterm"); 736 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 737 if (buffer[4] == 0xf6) { 738 dev_err(&card->gdev->dev, 739 "The qeth device is not configured " 740 "for the OSI layer required by z/VM\n"); 741 return -EPERM; 742 } 743 return -EIO; 744 } 745 return 0; 746 } 747 748 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 749 { 750 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 751 dev_get_drvdata(&cdev->dev))->dev); 752 return card; 753 } 754 755 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 756 { 757 __u8 index; 758 759 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 760 index = channel->io_buf_no; 761 do { 762 if (channel->iob[index].state == BUF_STATE_FREE) { 763 channel->iob[index].state = BUF_STATE_LOCKED; 764 channel->io_buf_no = (channel->io_buf_no + 1) % 765 QETH_CMD_BUFFER_NO; 766 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 767 return channel->iob + index; 768 } 769 index = (index + 1) % QETH_CMD_BUFFER_NO; 770 } while (index != channel->io_buf_no); 771 772 return NULL; 773 } 774 775 void qeth_release_buffer(struct qeth_channel *channel, 776 struct qeth_cmd_buffer *iob) 777 { 778 unsigned long flags; 779 780 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 781 spin_lock_irqsave(&channel->iob_lock, flags); 782 memset(iob->data, 0, QETH_BUFSIZE); 783 iob->state = BUF_STATE_FREE; 784 iob->callback = qeth_send_control_data_cb; 785 iob->rc = 0; 786 spin_unlock_irqrestore(&channel->iob_lock, flags); 787 wake_up(&channel->wait_q); 788 } 789 EXPORT_SYMBOL_GPL(qeth_release_buffer); 790 791 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 792 { 793 struct qeth_cmd_buffer *buffer = NULL; 794 unsigned long flags; 795 796 spin_lock_irqsave(&channel->iob_lock, flags); 797 buffer = __qeth_get_buffer(channel); 798 spin_unlock_irqrestore(&channel->iob_lock, flags); 799 return buffer; 800 } 801 802 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 803 { 804 struct qeth_cmd_buffer *buffer; 805 wait_event(channel->wait_q, 806 ((buffer = qeth_get_buffer(channel)) != NULL)); 807 return buffer; 808 } 809 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 810 811 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 812 { 813 int cnt; 814 815 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 816 qeth_release_buffer(channel, &channel->iob[cnt]); 817 channel->io_buf_no = 0; 818 } 819 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 820 821 static void qeth_send_control_data_cb(struct qeth_channel *channel, 822 struct qeth_cmd_buffer *iob) 823 { 824 struct qeth_card *card; 825 struct qeth_reply *reply, *r; 826 struct qeth_ipa_cmd *cmd; 827 unsigned long flags; 828 int keep_reply; 829 int rc = 0; 830 831 card = CARD_FROM_CDEV(channel->ccwdev); 832 QETH_CARD_TEXT(card, 4, "sndctlcb"); 833 rc = qeth_check_idx_response(card, iob->data); 834 switch (rc) { 835 case 0: 836 break; 837 case -EIO: 838 qeth_clear_ipacmd_list(card); 839 qeth_schedule_recovery(card); 840 /* fall through */ 841 default: 842 goto out; 843 } 844 845 cmd = qeth_check_ipa_data(card, iob); 846 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 847 goto out; 848 /*in case of OSN : check if cmd is set */ 849 if (card->info.type == QETH_CARD_TYPE_OSN && 850 cmd && 851 cmd->hdr.command != IPA_CMD_STARTLAN && 852 card->osn_info.assist_cb != NULL) { 853 card->osn_info.assist_cb(card->dev, cmd); 854 goto out; 855 } 856 857 spin_lock_irqsave(&card->lock, flags); 858 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 859 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 860 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 861 qeth_get_reply(reply); 862 list_del_init(&reply->list); 863 spin_unlock_irqrestore(&card->lock, flags); 864 keep_reply = 0; 865 if (reply->callback != NULL) { 866 if (cmd) { 867 reply->offset = (__u16)((char *)cmd - 868 (char *)iob->data); 869 keep_reply = reply->callback(card, 870 reply, 871 (unsigned long)cmd); 872 } else 873 keep_reply = reply->callback(card, 874 reply, 875 (unsigned long)iob); 876 } 877 if (cmd) 878 reply->rc = (u16) cmd->hdr.return_code; 879 else if (iob->rc) 880 reply->rc = iob->rc; 881 if (keep_reply) { 882 spin_lock_irqsave(&card->lock, flags); 883 list_add_tail(&reply->list, 884 &card->cmd_waiter_list); 885 spin_unlock_irqrestore(&card->lock, flags); 886 } else { 887 atomic_inc(&reply->received); 888 wake_up(&reply->wait_q); 889 } 890 qeth_put_reply(reply); 891 goto out; 892 } 893 } 894 spin_unlock_irqrestore(&card->lock, flags); 895 out: 896 memcpy(&card->seqno.pdu_hdr_ack, 897 QETH_PDU_HEADER_SEQ_NO(iob->data), 898 QETH_SEQ_NO_LENGTH); 899 qeth_release_buffer(channel, iob); 900 } 901 902 static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers) 903 { 904 int cnt; 905 906 QETH_DBF_TEXT(SETUP, 2, "setupch"); 907 908 channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA); 909 if (!channel->ccw) 910 return -ENOMEM; 911 channel->state = CH_STATE_DOWN; 912 atomic_set(&channel->irq_pending, 0); 913 init_waitqueue_head(&channel->wait_q); 914 915 if (!alloc_buffers) 916 return 0; 917 918 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 919 channel->iob[cnt].data = 920 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 921 if (channel->iob[cnt].data == NULL) 922 break; 923 channel->iob[cnt].state = BUF_STATE_FREE; 924 channel->iob[cnt].channel = channel; 925 channel->iob[cnt].callback = qeth_send_control_data_cb; 926 channel->iob[cnt].rc = 0; 927 } 928 if (cnt < QETH_CMD_BUFFER_NO) { 929 kfree(channel->ccw); 930 while (cnt-- > 0) 931 kfree(channel->iob[cnt].data); 932 return -ENOMEM; 933 } 934 channel->io_buf_no = 0; 935 spin_lock_init(&channel->iob_lock); 936 937 return 0; 938 } 939 940 static int qeth_set_thread_start_bit(struct qeth_card *card, 941 unsigned long thread) 942 { 943 unsigned long flags; 944 945 spin_lock_irqsave(&card->thread_mask_lock, flags); 946 if (!(card->thread_allowed_mask & thread) || 947 (card->thread_start_mask & thread)) { 948 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 949 return -EPERM; 950 } 951 card->thread_start_mask |= thread; 952 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 953 return 0; 954 } 955 956 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 957 { 958 unsigned long flags; 959 960 spin_lock_irqsave(&card->thread_mask_lock, flags); 961 card->thread_start_mask &= ~thread; 962 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 963 wake_up(&card->wait_q); 964 } 965 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 966 967 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 968 { 969 unsigned long flags; 970 971 spin_lock_irqsave(&card->thread_mask_lock, flags); 972 card->thread_running_mask &= ~thread; 973 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 974 wake_up_all(&card->wait_q); 975 } 976 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 977 978 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 979 { 980 unsigned long flags; 981 int rc = 0; 982 983 spin_lock_irqsave(&card->thread_mask_lock, flags); 984 if (card->thread_start_mask & thread) { 985 if ((card->thread_allowed_mask & thread) && 986 !(card->thread_running_mask & thread)) { 987 rc = 1; 988 card->thread_start_mask &= ~thread; 989 card->thread_running_mask |= thread; 990 } else 991 rc = -EPERM; 992 } 993 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 994 return rc; 995 } 996 997 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 998 { 999 int rc = 0; 1000 1001 wait_event(card->wait_q, 1002 (rc = __qeth_do_run_thread(card, thread)) >= 0); 1003 return rc; 1004 } 1005 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 1006 1007 void qeth_schedule_recovery(struct qeth_card *card) 1008 { 1009 QETH_CARD_TEXT(card, 2, "startrec"); 1010 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 1011 schedule_work(&card->kernel_thread_starter); 1012 } 1013 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 1014 1015 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 1016 { 1017 int dstat, cstat; 1018 char *sense; 1019 struct qeth_card *card; 1020 1021 sense = (char *) irb->ecw; 1022 cstat = irb->scsw.cmd.cstat; 1023 dstat = irb->scsw.cmd.dstat; 1024 card = CARD_FROM_CDEV(cdev); 1025 1026 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1027 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1028 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1029 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1030 dev_warn(&cdev->dev, "The qeth device driver " 1031 "failed to recover an error on the device\n"); 1032 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1033 dev_name(&cdev->dev), dstat, cstat); 1034 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1035 16, 1, irb, 64, 1); 1036 return 1; 1037 } 1038 1039 if (dstat & DEV_STAT_UNIT_CHECK) { 1040 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1041 SENSE_RESETTING_EVENT_FLAG) { 1042 QETH_CARD_TEXT(card, 2, "REVIND"); 1043 return 1; 1044 } 1045 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1046 SENSE_COMMAND_REJECT_FLAG) { 1047 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1048 return 1; 1049 } 1050 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1051 QETH_CARD_TEXT(card, 2, "AFFE"); 1052 return 1; 1053 } 1054 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1055 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1056 return 0; 1057 } 1058 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1059 return 1; 1060 } 1061 return 0; 1062 } 1063 1064 static long __qeth_check_irb_error(struct ccw_device *cdev, 1065 unsigned long intparm, struct irb *irb) 1066 { 1067 struct qeth_card *card; 1068 1069 card = CARD_FROM_CDEV(cdev); 1070 1071 if (!card || !IS_ERR(irb)) 1072 return 0; 1073 1074 switch (PTR_ERR(irb)) { 1075 case -EIO: 1076 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1077 dev_name(&cdev->dev)); 1078 QETH_CARD_TEXT(card, 2, "ckirberr"); 1079 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1080 break; 1081 case -ETIMEDOUT: 1082 dev_warn(&cdev->dev, "A hardware operation timed out" 1083 " on the device\n"); 1084 QETH_CARD_TEXT(card, 2, "ckirberr"); 1085 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1086 if (intparm == QETH_RCD_PARM) { 1087 if (card->data.ccwdev == cdev) { 1088 card->data.state = CH_STATE_DOWN; 1089 wake_up(&card->wait_q); 1090 } 1091 } 1092 break; 1093 default: 1094 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1095 dev_name(&cdev->dev), PTR_ERR(irb)); 1096 QETH_CARD_TEXT(card, 2, "ckirberr"); 1097 QETH_CARD_TEXT(card, 2, " rc???"); 1098 } 1099 return PTR_ERR(irb); 1100 } 1101 1102 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1103 struct irb *irb) 1104 { 1105 int rc; 1106 int cstat, dstat; 1107 struct qeth_cmd_buffer *iob = NULL; 1108 struct qeth_channel *channel; 1109 struct qeth_card *card; 1110 1111 card = CARD_FROM_CDEV(cdev); 1112 if (!card) 1113 return; 1114 1115 QETH_CARD_TEXT(card, 5, "irq"); 1116 1117 if (card->read.ccwdev == cdev) { 1118 channel = &card->read; 1119 QETH_CARD_TEXT(card, 5, "read"); 1120 } else if (card->write.ccwdev == cdev) { 1121 channel = &card->write; 1122 QETH_CARD_TEXT(card, 5, "write"); 1123 } else { 1124 channel = &card->data; 1125 QETH_CARD_TEXT(card, 5, "data"); 1126 } 1127 1128 if (qeth_intparm_is_iob(intparm)) 1129 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1130 1131 if (__qeth_check_irb_error(cdev, intparm, irb)) { 1132 /* IO was terminated, free its resources. */ 1133 if (iob) 1134 qeth_release_buffer(iob->channel, iob); 1135 atomic_set(&channel->irq_pending, 0); 1136 wake_up(&card->wait_q); 1137 return; 1138 } 1139 1140 atomic_set(&channel->irq_pending, 0); 1141 1142 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1143 channel->state = CH_STATE_STOPPED; 1144 1145 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1146 channel->state = CH_STATE_HALTED; 1147 1148 /*let's wake up immediately on data channel*/ 1149 if ((channel == &card->data) && (intparm != 0) && 1150 (intparm != QETH_RCD_PARM)) 1151 goto out; 1152 1153 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1154 QETH_CARD_TEXT(card, 6, "clrchpar"); 1155 /* we don't have to handle this further */ 1156 intparm = 0; 1157 } 1158 if (intparm == QETH_HALT_CHANNEL_PARM) { 1159 QETH_CARD_TEXT(card, 6, "hltchpar"); 1160 /* we don't have to handle this further */ 1161 intparm = 0; 1162 } 1163 1164 cstat = irb->scsw.cmd.cstat; 1165 dstat = irb->scsw.cmd.dstat; 1166 1167 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1168 (dstat & DEV_STAT_UNIT_CHECK) || 1169 (cstat)) { 1170 if (irb->esw.esw0.erw.cons) { 1171 dev_warn(&channel->ccwdev->dev, 1172 "The qeth device driver failed to recover " 1173 "an error on the device\n"); 1174 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1175 "0x%X dstat 0x%X\n", 1176 dev_name(&channel->ccwdev->dev), cstat, dstat); 1177 print_hex_dump(KERN_WARNING, "qeth: irb ", 1178 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1179 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1180 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1181 } 1182 if (intparm == QETH_RCD_PARM) { 1183 channel->state = CH_STATE_DOWN; 1184 goto out; 1185 } 1186 rc = qeth_get_problem(cdev, irb); 1187 if (rc) { 1188 card->read_or_write_problem = 1; 1189 qeth_clear_ipacmd_list(card); 1190 qeth_schedule_recovery(card); 1191 goto out; 1192 } 1193 } 1194 1195 if (intparm == QETH_RCD_PARM) { 1196 channel->state = CH_STATE_RCD_DONE; 1197 goto out; 1198 } 1199 if (channel == &card->data) 1200 return; 1201 if (channel == &card->read && 1202 channel->state == CH_STATE_UP) 1203 __qeth_issue_next_read(card); 1204 1205 if (iob && iob->callback) 1206 iob->callback(iob->channel, iob); 1207 1208 out: 1209 wake_up(&card->wait_q); 1210 return; 1211 } 1212 1213 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1214 struct qeth_qdio_out_buffer *buf, 1215 enum iucv_tx_notify notification) 1216 { 1217 struct sk_buff *skb; 1218 1219 if (skb_queue_empty(&buf->skb_list)) 1220 goto out; 1221 skb = skb_peek(&buf->skb_list); 1222 while (skb) { 1223 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1224 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1225 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1226 if (skb->sk) { 1227 struct iucv_sock *iucv = iucv_sk(skb->sk); 1228 iucv->sk_txnotify(skb, notification); 1229 } 1230 } 1231 if (skb_queue_is_last(&buf->skb_list, skb)) 1232 skb = NULL; 1233 else 1234 skb = skb_queue_next(&buf->skb_list, skb); 1235 } 1236 out: 1237 return; 1238 } 1239 1240 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1241 { 1242 struct sk_buff *skb; 1243 struct iucv_sock *iucv; 1244 int notify_general_error = 0; 1245 1246 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1247 notify_general_error = 1; 1248 1249 /* release may never happen from within CQ tasklet scope */ 1250 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1251 1252 skb = skb_dequeue(&buf->skb_list); 1253 while (skb) { 1254 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1255 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1256 if (notify_general_error && 1257 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1258 if (skb->sk) { 1259 iucv = iucv_sk(skb->sk); 1260 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1261 } 1262 } 1263 refcount_dec(&skb->users); 1264 dev_kfree_skb_any(skb); 1265 skb = skb_dequeue(&buf->skb_list); 1266 } 1267 } 1268 1269 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1270 struct qeth_qdio_out_buffer *buf) 1271 { 1272 int i; 1273 1274 /* is PCI flag set on buffer? */ 1275 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1276 atomic_dec(&queue->set_pci_flags_count); 1277 1278 qeth_release_skbs(buf); 1279 1280 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1281 if (buf->buffer->element[i].addr && buf->is_header[i]) 1282 kmem_cache_free(qeth_core_header_cache, 1283 buf->buffer->element[i].addr); 1284 buf->is_header[i] = 0; 1285 } 1286 1287 qeth_scrub_qdio_buffer(buf->buffer, 1288 QETH_MAX_BUFFER_ELEMENTS(queue->card)); 1289 buf->next_element_to_fill = 0; 1290 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); 1291 } 1292 1293 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1294 { 1295 int j; 1296 1297 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1298 if (!q->bufs[j]) 1299 continue; 1300 qeth_cleanup_handled_pending(q, j, 1); 1301 qeth_clear_output_buffer(q, q->bufs[j]); 1302 if (free) { 1303 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1304 q->bufs[j] = NULL; 1305 } 1306 } 1307 } 1308 1309 void qeth_clear_qdio_buffers(struct qeth_card *card) 1310 { 1311 int i; 1312 1313 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1314 /* clear outbound buffers to free skbs */ 1315 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1316 if (card->qdio.out_qs[i]) { 1317 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1318 } 1319 } 1320 } 1321 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1322 1323 static void qeth_free_buffer_pool(struct qeth_card *card) 1324 { 1325 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1326 int i = 0; 1327 list_for_each_entry_safe(pool_entry, tmp, 1328 &card->qdio.init_pool.entry_list, init_list){ 1329 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1330 free_page((unsigned long)pool_entry->elements[i]); 1331 list_del(&pool_entry->init_list); 1332 kfree(pool_entry); 1333 } 1334 } 1335 1336 static void qeth_clean_channel(struct qeth_channel *channel) 1337 { 1338 int cnt; 1339 1340 QETH_DBF_TEXT(SETUP, 2, "freech"); 1341 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1342 kfree(channel->iob[cnt].data); 1343 kfree(channel->ccw); 1344 } 1345 1346 static void qeth_set_single_write_queues(struct qeth_card *card) 1347 { 1348 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1349 (card->qdio.no_out_queues == 4)) 1350 qeth_free_qdio_buffers(card); 1351 1352 card->qdio.no_out_queues = 1; 1353 if (card->qdio.default_out_queue != 0) 1354 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1355 1356 card->qdio.default_out_queue = 0; 1357 } 1358 1359 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1360 { 1361 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1362 (card->qdio.no_out_queues == 1)) { 1363 qeth_free_qdio_buffers(card); 1364 card->qdio.default_out_queue = 2; 1365 } 1366 card->qdio.no_out_queues = 4; 1367 } 1368 1369 static void qeth_update_from_chp_desc(struct qeth_card *card) 1370 { 1371 struct ccw_device *ccwdev; 1372 struct channel_path_desc_fmt0 *chp_dsc; 1373 1374 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1375 1376 ccwdev = card->data.ccwdev; 1377 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1378 if (!chp_dsc) 1379 goto out; 1380 1381 card->info.func_level = 0x4100 + chp_dsc->desc; 1382 if (card->info.type == QETH_CARD_TYPE_IQD) 1383 goto out; 1384 1385 /* CHPP field bit 6 == 1 -> single queue */ 1386 if ((chp_dsc->chpp & 0x02) == 0x02) 1387 qeth_set_single_write_queues(card); 1388 else 1389 qeth_set_multiple_write_queues(card); 1390 out: 1391 kfree(chp_dsc); 1392 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1393 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1394 } 1395 1396 static void qeth_init_qdio_info(struct qeth_card *card) 1397 { 1398 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1399 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1400 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1401 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1402 card->qdio.no_out_queues = QETH_MAX_QUEUES; 1403 1404 /* inbound */ 1405 card->qdio.no_in_queues = 1; 1406 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1407 if (card->info.type == QETH_CARD_TYPE_IQD) 1408 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1409 else 1410 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1411 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1412 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1413 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1414 } 1415 1416 static void qeth_set_initial_options(struct qeth_card *card) 1417 { 1418 card->options.route4.type = NO_ROUTER; 1419 card->options.route6.type = NO_ROUTER; 1420 card->options.rx_sg_cb = QETH_RX_SG_CB; 1421 card->options.isolation = ISOLATION_MODE_NONE; 1422 card->options.cq = QETH_CQ_DISABLED; 1423 } 1424 1425 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1426 { 1427 unsigned long flags; 1428 int rc = 0; 1429 1430 spin_lock_irqsave(&card->thread_mask_lock, flags); 1431 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1432 (u8) card->thread_start_mask, 1433 (u8) card->thread_allowed_mask, 1434 (u8) card->thread_running_mask); 1435 rc = (card->thread_start_mask & thread); 1436 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1437 return rc; 1438 } 1439 1440 static void qeth_start_kernel_thread(struct work_struct *work) 1441 { 1442 struct task_struct *ts; 1443 struct qeth_card *card = container_of(work, struct qeth_card, 1444 kernel_thread_starter); 1445 QETH_CARD_TEXT(card , 2, "strthrd"); 1446 1447 if (card->read.state != CH_STATE_UP && 1448 card->write.state != CH_STATE_UP) 1449 return; 1450 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1451 ts = kthread_run(card->discipline->recover, (void *)card, 1452 "qeth_recover"); 1453 if (IS_ERR(ts)) { 1454 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1455 qeth_clear_thread_running_bit(card, 1456 QETH_RECOVER_THREAD); 1457 } 1458 } 1459 } 1460 1461 static void qeth_buffer_reclaim_work(struct work_struct *); 1462 static void qeth_setup_card(struct qeth_card *card) 1463 { 1464 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1465 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1466 1467 card->info.type = CARD_RDEV(card)->id.driver_info; 1468 card->state = CARD_STATE_DOWN; 1469 spin_lock_init(&card->mclock); 1470 spin_lock_init(&card->lock); 1471 spin_lock_init(&card->ip_lock); 1472 spin_lock_init(&card->thread_mask_lock); 1473 mutex_init(&card->conf_mutex); 1474 mutex_init(&card->discipline_mutex); 1475 mutex_init(&card->vid_list_mutex); 1476 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1477 INIT_LIST_HEAD(&card->cmd_waiter_list); 1478 init_waitqueue_head(&card->wait_q); 1479 qeth_set_initial_options(card); 1480 /* IP address takeover */ 1481 INIT_LIST_HEAD(&card->ipato.entries); 1482 qeth_init_qdio_info(card); 1483 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1484 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1485 } 1486 1487 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1488 { 1489 struct qeth_card *card = container_of(slr, struct qeth_card, 1490 qeth_service_level); 1491 if (card->info.mcl_level[0]) 1492 seq_printf(m, "qeth: %s firmware level %s\n", 1493 CARD_BUS_ID(card), card->info.mcl_level); 1494 } 1495 1496 static struct qeth_card *qeth_alloc_card(void) 1497 { 1498 struct qeth_card *card; 1499 1500 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1501 card = kzalloc(sizeof(*card), GFP_KERNEL); 1502 if (!card) 1503 goto out; 1504 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1505 if (qeth_setup_channel(&card->read, true)) 1506 goto out_ip; 1507 if (qeth_setup_channel(&card->write, true)) 1508 goto out_channel; 1509 if (qeth_setup_channel(&card->data, false)) 1510 goto out_data; 1511 card->options.layer2 = -1; 1512 card->qeth_service_level.seq_print = qeth_core_sl_print; 1513 register_service_level(&card->qeth_service_level); 1514 return card; 1515 1516 out_data: 1517 qeth_clean_channel(&card->write); 1518 out_channel: 1519 qeth_clean_channel(&card->read); 1520 out_ip: 1521 kfree(card); 1522 out: 1523 return NULL; 1524 } 1525 1526 static int qeth_clear_channel(struct qeth_channel *channel) 1527 { 1528 unsigned long flags; 1529 struct qeth_card *card; 1530 int rc; 1531 1532 card = CARD_FROM_CDEV(channel->ccwdev); 1533 QETH_CARD_TEXT(card, 3, "clearch"); 1534 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1535 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1536 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1537 1538 if (rc) 1539 return rc; 1540 rc = wait_event_interruptible_timeout(card->wait_q, 1541 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1542 if (rc == -ERESTARTSYS) 1543 return rc; 1544 if (channel->state != CH_STATE_STOPPED) 1545 return -ETIME; 1546 channel->state = CH_STATE_DOWN; 1547 return 0; 1548 } 1549 1550 static int qeth_halt_channel(struct qeth_channel *channel) 1551 { 1552 unsigned long flags; 1553 struct qeth_card *card; 1554 int rc; 1555 1556 card = CARD_FROM_CDEV(channel->ccwdev); 1557 QETH_CARD_TEXT(card, 3, "haltch"); 1558 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1559 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1560 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1561 1562 if (rc) 1563 return rc; 1564 rc = wait_event_interruptible_timeout(card->wait_q, 1565 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1566 if (rc == -ERESTARTSYS) 1567 return rc; 1568 if (channel->state != CH_STATE_HALTED) 1569 return -ETIME; 1570 return 0; 1571 } 1572 1573 static int qeth_halt_channels(struct qeth_card *card) 1574 { 1575 int rc1 = 0, rc2 = 0, rc3 = 0; 1576 1577 QETH_CARD_TEXT(card, 3, "haltchs"); 1578 rc1 = qeth_halt_channel(&card->read); 1579 rc2 = qeth_halt_channel(&card->write); 1580 rc3 = qeth_halt_channel(&card->data); 1581 if (rc1) 1582 return rc1; 1583 if (rc2) 1584 return rc2; 1585 return rc3; 1586 } 1587 1588 static int qeth_clear_channels(struct qeth_card *card) 1589 { 1590 int rc1 = 0, rc2 = 0, rc3 = 0; 1591 1592 QETH_CARD_TEXT(card, 3, "clearchs"); 1593 rc1 = qeth_clear_channel(&card->read); 1594 rc2 = qeth_clear_channel(&card->write); 1595 rc3 = qeth_clear_channel(&card->data); 1596 if (rc1) 1597 return rc1; 1598 if (rc2) 1599 return rc2; 1600 return rc3; 1601 } 1602 1603 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1604 { 1605 int rc = 0; 1606 1607 QETH_CARD_TEXT(card, 3, "clhacrd"); 1608 1609 if (halt) 1610 rc = qeth_halt_channels(card); 1611 if (rc) 1612 return rc; 1613 return qeth_clear_channels(card); 1614 } 1615 1616 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1617 { 1618 int rc = 0; 1619 1620 QETH_CARD_TEXT(card, 3, "qdioclr"); 1621 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1622 QETH_QDIO_CLEANING)) { 1623 case QETH_QDIO_ESTABLISHED: 1624 if (card->info.type == QETH_CARD_TYPE_IQD) 1625 rc = qdio_shutdown(CARD_DDEV(card), 1626 QDIO_FLAG_CLEANUP_USING_HALT); 1627 else 1628 rc = qdio_shutdown(CARD_DDEV(card), 1629 QDIO_FLAG_CLEANUP_USING_CLEAR); 1630 if (rc) 1631 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1632 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1633 break; 1634 case QETH_QDIO_CLEANING: 1635 return rc; 1636 default: 1637 break; 1638 } 1639 rc = qeth_clear_halt_card(card, use_halt); 1640 if (rc) 1641 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1642 card->state = CARD_STATE_DOWN; 1643 return rc; 1644 } 1645 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1646 1647 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1648 int *length) 1649 { 1650 struct ciw *ciw; 1651 char *rcd_buf; 1652 int ret; 1653 struct qeth_channel *channel = &card->data; 1654 unsigned long flags; 1655 1656 /* 1657 * scan for RCD command in extended SenseID data 1658 */ 1659 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1660 if (!ciw || ciw->cmd == 0) 1661 return -EOPNOTSUPP; 1662 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1663 if (!rcd_buf) 1664 return -ENOMEM; 1665 1666 qeth_setup_ccw(channel->ccw, ciw->cmd, ciw->count, rcd_buf); 1667 channel->state = CH_STATE_RCD; 1668 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1669 ret = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1670 QETH_RCD_PARM, LPM_ANYPATH, 0, 1671 QETH_RCD_TIMEOUT); 1672 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1673 if (!ret) 1674 wait_event(card->wait_q, 1675 (channel->state == CH_STATE_RCD_DONE || 1676 channel->state == CH_STATE_DOWN)); 1677 if (channel->state == CH_STATE_DOWN) 1678 ret = -EIO; 1679 else 1680 channel->state = CH_STATE_DOWN; 1681 if (ret) { 1682 kfree(rcd_buf); 1683 *buffer = NULL; 1684 *length = 0; 1685 } else { 1686 *length = ciw->count; 1687 *buffer = rcd_buf; 1688 } 1689 return ret; 1690 } 1691 1692 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1693 { 1694 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1695 card->info.chpid = prcd[30]; 1696 card->info.unit_addr2 = prcd[31]; 1697 card->info.cula = prcd[63]; 1698 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1699 (prcd[0x11] == _ascebc['M'])); 1700 } 1701 1702 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1703 { 1704 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1705 struct diag26c_vnic_resp *response = NULL; 1706 struct diag26c_vnic_req *request = NULL; 1707 struct ccw_dev_id id; 1708 char userid[80]; 1709 int rc = 0; 1710 1711 QETH_DBF_TEXT(SETUP, 2, "vmlayer"); 1712 1713 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1714 if (rc) 1715 goto out; 1716 1717 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1718 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1719 if (!request || !response) { 1720 rc = -ENOMEM; 1721 goto out; 1722 } 1723 1724 ccw_device_get_id(CARD_RDEV(card), &id); 1725 request->resp_buf_len = sizeof(*response); 1726 request->resp_version = DIAG26C_VERSION6_VM65918; 1727 request->req_format = DIAG26C_VNIC_INFO; 1728 ASCEBC(userid, 8); 1729 memcpy(&request->sys_name, userid, 8); 1730 request->devno = id.devno; 1731 1732 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1733 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1734 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1735 if (rc) 1736 goto out; 1737 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1738 1739 if (request->resp_buf_len < sizeof(*response) || 1740 response->version != request->resp_version) { 1741 rc = -EIO; 1742 goto out; 1743 } 1744 1745 if (response->protocol == VNIC_INFO_PROT_L2) 1746 disc = QETH_DISCIPLINE_LAYER2; 1747 else if (response->protocol == VNIC_INFO_PROT_L3) 1748 disc = QETH_DISCIPLINE_LAYER3; 1749 1750 out: 1751 kfree(response); 1752 kfree(request); 1753 if (rc) 1754 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc); 1755 return disc; 1756 } 1757 1758 /* Determine whether the device requires a specific layer discipline */ 1759 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1760 { 1761 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1762 1763 if (card->info.type == QETH_CARD_TYPE_OSM || 1764 card->info.type == QETH_CARD_TYPE_OSN) 1765 disc = QETH_DISCIPLINE_LAYER2; 1766 else if (card->info.guestlan) 1767 disc = (card->info.type == QETH_CARD_TYPE_IQD) ? 1768 QETH_DISCIPLINE_LAYER3 : 1769 qeth_vm_detect_layer(card); 1770 1771 switch (disc) { 1772 case QETH_DISCIPLINE_LAYER2: 1773 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1774 break; 1775 case QETH_DISCIPLINE_LAYER3: 1776 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1777 break; 1778 default: 1779 QETH_DBF_TEXT(SETUP, 3, "force no"); 1780 } 1781 1782 return disc; 1783 } 1784 1785 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1786 { 1787 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1788 1789 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1790 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1791 card->info.blkt.time_total = 0; 1792 card->info.blkt.inter_packet = 0; 1793 card->info.blkt.inter_packet_jumbo = 0; 1794 } else { 1795 card->info.blkt.time_total = 250; 1796 card->info.blkt.inter_packet = 5; 1797 card->info.blkt.inter_packet_jumbo = 15; 1798 } 1799 } 1800 1801 static void qeth_init_tokens(struct qeth_card *card) 1802 { 1803 card->token.issuer_rm_w = 0x00010103UL; 1804 card->token.cm_filter_w = 0x00010108UL; 1805 card->token.cm_connection_w = 0x0001010aUL; 1806 card->token.ulp_filter_w = 0x0001010bUL; 1807 card->token.ulp_connection_w = 0x0001010dUL; 1808 } 1809 1810 static void qeth_init_func_level(struct qeth_card *card) 1811 { 1812 switch (card->info.type) { 1813 case QETH_CARD_TYPE_IQD: 1814 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1815 break; 1816 case QETH_CARD_TYPE_OSD: 1817 case QETH_CARD_TYPE_OSN: 1818 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1819 break; 1820 default: 1821 break; 1822 } 1823 } 1824 1825 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1826 void (*idx_reply_cb)(struct qeth_channel *, 1827 struct qeth_cmd_buffer *)) 1828 { 1829 struct qeth_cmd_buffer *iob; 1830 unsigned long flags; 1831 int rc; 1832 struct qeth_card *card; 1833 1834 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1835 card = CARD_FROM_CDEV(channel->ccwdev); 1836 iob = qeth_get_buffer(channel); 1837 if (!iob) 1838 return -ENOMEM; 1839 iob->callback = idx_reply_cb; 1840 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data); 1841 1842 wait_event(card->wait_q, 1843 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1844 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1845 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1846 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1847 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1848 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1849 1850 if (rc) { 1851 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1852 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1853 atomic_set(&channel->irq_pending, 0); 1854 wake_up(&card->wait_q); 1855 return rc; 1856 } 1857 rc = wait_event_interruptible_timeout(card->wait_q, 1858 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1859 if (rc == -ERESTARTSYS) 1860 return rc; 1861 if (channel->state != CH_STATE_UP) { 1862 rc = -ETIME; 1863 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1864 } else 1865 rc = 0; 1866 return rc; 1867 } 1868 1869 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1870 void (*idx_reply_cb)(struct qeth_channel *, 1871 struct qeth_cmd_buffer *)) 1872 { 1873 struct qeth_card *card; 1874 struct qeth_cmd_buffer *iob; 1875 unsigned long flags; 1876 __u16 temp; 1877 __u8 tmp; 1878 int rc; 1879 struct ccw_dev_id temp_devid; 1880 1881 card = CARD_FROM_CDEV(channel->ccwdev); 1882 1883 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1884 1885 iob = qeth_get_buffer(channel); 1886 if (!iob) 1887 return -ENOMEM; 1888 iob->callback = idx_reply_cb; 1889 qeth_setup_ccw(channel->ccw, CCW_CMD_WRITE, IDX_ACTIVATE_SIZE, 1890 iob->data); 1891 if (channel == &card->write) { 1892 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1893 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1894 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1895 card->seqno.trans_hdr++; 1896 } else { 1897 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1898 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1899 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1900 } 1901 tmp = ((u8)card->dev->dev_port) | 0x80; 1902 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1903 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1904 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1905 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1906 &card->info.func_level, sizeof(__u16)); 1907 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1908 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1909 temp = (card->info.cula << 8) + card->info.unit_addr2; 1910 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1911 1912 wait_event(card->wait_q, 1913 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1914 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1915 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1916 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1917 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1918 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1919 1920 if (rc) { 1921 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1922 rc); 1923 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1924 atomic_set(&channel->irq_pending, 0); 1925 wake_up(&card->wait_q); 1926 return rc; 1927 } 1928 rc = wait_event_interruptible_timeout(card->wait_q, 1929 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1930 if (rc == -ERESTARTSYS) 1931 return rc; 1932 if (channel->state != CH_STATE_ACTIVATING) { 1933 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1934 " failed to recover an error on the device\n"); 1935 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1936 dev_name(&channel->ccwdev->dev)); 1937 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1938 return -ETIME; 1939 } 1940 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1941 } 1942 1943 static int qeth_peer_func_level(int level) 1944 { 1945 if ((level & 0xff) == 8) 1946 return (level & 0xff) + 0x400; 1947 if (((level >> 8) & 3) == 1) 1948 return (level & 0xff) + 0x200; 1949 return level; 1950 } 1951 1952 static void qeth_idx_write_cb(struct qeth_channel *channel, 1953 struct qeth_cmd_buffer *iob) 1954 { 1955 struct qeth_card *card; 1956 __u16 temp; 1957 1958 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1959 1960 if (channel->state == CH_STATE_DOWN) { 1961 channel->state = CH_STATE_ACTIVATING; 1962 goto out; 1963 } 1964 card = CARD_FROM_CDEV(channel->ccwdev); 1965 1966 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1967 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1968 dev_err(&channel->ccwdev->dev, 1969 "The adapter is used exclusively by another " 1970 "host\n"); 1971 else 1972 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1973 " negative reply\n", 1974 dev_name(&channel->ccwdev->dev)); 1975 goto out; 1976 } 1977 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1978 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1979 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1980 "function level mismatch (sent: 0x%x, received: " 1981 "0x%x)\n", dev_name(&channel->ccwdev->dev), 1982 card->info.func_level, temp); 1983 goto out; 1984 } 1985 channel->state = CH_STATE_UP; 1986 out: 1987 qeth_release_buffer(channel, iob); 1988 } 1989 1990 static void qeth_idx_read_cb(struct qeth_channel *channel, 1991 struct qeth_cmd_buffer *iob) 1992 { 1993 struct qeth_card *card; 1994 __u16 temp; 1995 1996 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1997 if (channel->state == CH_STATE_DOWN) { 1998 channel->state = CH_STATE_ACTIVATING; 1999 goto out; 2000 } 2001 2002 card = CARD_FROM_CDEV(channel->ccwdev); 2003 if (qeth_check_idx_response(card, iob->data)) 2004 goto out; 2005 2006 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 2007 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 2008 case QETH_IDX_ACT_ERR_EXCL: 2009 dev_err(&channel->ccwdev->dev, 2010 "The adapter is used exclusively by another " 2011 "host\n"); 2012 break; 2013 case QETH_IDX_ACT_ERR_AUTH: 2014 case QETH_IDX_ACT_ERR_AUTH_USER: 2015 dev_err(&channel->ccwdev->dev, 2016 "Setting the device online failed because of " 2017 "insufficient authorization\n"); 2018 break; 2019 default: 2020 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 2021 " negative reply\n", 2022 dev_name(&channel->ccwdev->dev)); 2023 } 2024 QETH_CARD_TEXT_(card, 2, "idxread%c", 2025 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 2026 goto out; 2027 } 2028 2029 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2030 if (temp != qeth_peer_func_level(card->info.func_level)) { 2031 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 2032 "level mismatch (sent: 0x%x, received: 0x%x)\n", 2033 dev_name(&channel->ccwdev->dev), 2034 card->info.func_level, temp); 2035 goto out; 2036 } 2037 memcpy(&card->token.issuer_rm_r, 2038 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2039 QETH_MPC_TOKEN_LENGTH); 2040 memcpy(&card->info.mcl_level[0], 2041 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2042 channel->state = CH_STATE_UP; 2043 out: 2044 qeth_release_buffer(channel, iob); 2045 } 2046 2047 void qeth_prepare_control_data(struct qeth_card *card, int len, 2048 struct qeth_cmd_buffer *iob) 2049 { 2050 qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, len, iob->data); 2051 iob->callback = qeth_release_buffer; 2052 2053 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2054 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2055 card->seqno.trans_hdr++; 2056 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2057 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2058 card->seqno.pdu_hdr++; 2059 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2060 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2061 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2062 } 2063 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2064 2065 /** 2066 * qeth_send_control_data() - send control command to the card 2067 * @card: qeth_card structure pointer 2068 * @len: size of the command buffer 2069 * @iob: qeth_cmd_buffer pointer 2070 * @reply_cb: callback function pointer 2071 * @cb_card: pointer to the qeth_card structure 2072 * @cb_reply: pointer to the qeth_reply structure 2073 * @cb_cmd: pointer to the original iob for non-IPA 2074 * commands, or to the qeth_ipa_cmd structure 2075 * for the IPA commands. 2076 * @reply_param: private pointer passed to the callback 2077 * 2078 * Returns the value of the `return_code' field of the response 2079 * block returned from the hardware, or other error indication. 2080 * Value of zero indicates successful execution of the command. 2081 * 2082 * Callback function gets called one or more times, with cb_cmd 2083 * pointing to the response returned by the hardware. Callback 2084 * function must return non-zero if more reply blocks are expected, 2085 * and zero if the last or only reply block is received. Callback 2086 * function can get the value of the reply_param pointer from the 2087 * field 'param' of the structure qeth_reply. 2088 */ 2089 2090 int qeth_send_control_data(struct qeth_card *card, int len, 2091 struct qeth_cmd_buffer *iob, 2092 int (*reply_cb)(struct qeth_card *cb_card, 2093 struct qeth_reply *cb_reply, 2094 unsigned long cb_cmd), 2095 void *reply_param) 2096 { 2097 struct qeth_channel *channel = iob->channel; 2098 int rc; 2099 unsigned long flags; 2100 struct qeth_reply *reply = NULL; 2101 unsigned long timeout, event_timeout; 2102 struct qeth_ipa_cmd *cmd = NULL; 2103 2104 QETH_CARD_TEXT(card, 2, "sendctl"); 2105 2106 if (card->read_or_write_problem) { 2107 qeth_release_buffer(channel, iob); 2108 return -EIO; 2109 } 2110 reply = qeth_alloc_reply(card); 2111 if (!reply) { 2112 return -ENOMEM; 2113 } 2114 reply->callback = reply_cb; 2115 reply->param = reply_param; 2116 2117 init_waitqueue_head(&reply->wait_q); 2118 2119 while (atomic_cmpxchg(&channel->irq_pending, 0, 1)) ; 2120 2121 if (IS_IPA(iob->data)) { 2122 cmd = __ipa_cmd(iob); 2123 cmd->hdr.seqno = card->seqno.ipa++; 2124 reply->seqno = cmd->hdr.seqno; 2125 event_timeout = QETH_IPA_TIMEOUT; 2126 } else { 2127 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2128 event_timeout = QETH_TIMEOUT; 2129 } 2130 qeth_prepare_control_data(card, len, iob); 2131 2132 spin_lock_irqsave(&card->lock, flags); 2133 list_add_tail(&reply->list, &card->cmd_waiter_list); 2134 spin_unlock_irqrestore(&card->lock, flags); 2135 2136 timeout = jiffies + event_timeout; 2137 2138 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2139 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 2140 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 2141 (addr_t) iob, 0, 0, event_timeout); 2142 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 2143 if (rc) { 2144 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2145 "ccw_device_start rc = %i\n", 2146 dev_name(&channel->ccwdev->dev), rc); 2147 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2148 spin_lock_irqsave(&card->lock, flags); 2149 list_del_init(&reply->list); 2150 qeth_put_reply(reply); 2151 spin_unlock_irqrestore(&card->lock, flags); 2152 qeth_release_buffer(channel, iob); 2153 atomic_set(&channel->irq_pending, 0); 2154 wake_up(&card->wait_q); 2155 return rc; 2156 } 2157 2158 /* we have only one long running ipassist, since we can ensure 2159 process context of this command we can sleep */ 2160 if (cmd && cmd->hdr.command == IPA_CMD_SETIP && 2161 cmd->hdr.prot_version == QETH_PROT_IPV4) { 2162 if (!wait_event_timeout(reply->wait_q, 2163 atomic_read(&reply->received), event_timeout)) 2164 goto time_err; 2165 } else { 2166 while (!atomic_read(&reply->received)) { 2167 if (time_after(jiffies, timeout)) 2168 goto time_err; 2169 cpu_relax(); 2170 } 2171 } 2172 2173 rc = reply->rc; 2174 qeth_put_reply(reply); 2175 return rc; 2176 2177 time_err: 2178 reply->rc = -ETIME; 2179 spin_lock_irqsave(&reply->card->lock, flags); 2180 list_del_init(&reply->list); 2181 spin_unlock_irqrestore(&reply->card->lock, flags); 2182 atomic_inc(&reply->received); 2183 rc = reply->rc; 2184 qeth_put_reply(reply); 2185 return rc; 2186 } 2187 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2188 2189 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2190 unsigned long data) 2191 { 2192 struct qeth_cmd_buffer *iob; 2193 2194 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2195 2196 iob = (struct qeth_cmd_buffer *) data; 2197 memcpy(&card->token.cm_filter_r, 2198 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2199 QETH_MPC_TOKEN_LENGTH); 2200 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2201 return 0; 2202 } 2203 2204 static int qeth_cm_enable(struct qeth_card *card) 2205 { 2206 int rc; 2207 struct qeth_cmd_buffer *iob; 2208 2209 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2210 2211 iob = qeth_wait_for_buffer(&card->write); 2212 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2213 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2214 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2215 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2216 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2217 2218 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2219 qeth_cm_enable_cb, NULL); 2220 return rc; 2221 } 2222 2223 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2224 unsigned long data) 2225 { 2226 2227 struct qeth_cmd_buffer *iob; 2228 2229 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2230 2231 iob = (struct qeth_cmd_buffer *) data; 2232 memcpy(&card->token.cm_connection_r, 2233 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2234 QETH_MPC_TOKEN_LENGTH); 2235 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2236 return 0; 2237 } 2238 2239 static int qeth_cm_setup(struct qeth_card *card) 2240 { 2241 int rc; 2242 struct qeth_cmd_buffer *iob; 2243 2244 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2245 2246 iob = qeth_wait_for_buffer(&card->write); 2247 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2248 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2249 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2250 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2251 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2252 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2253 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2254 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2255 qeth_cm_setup_cb, NULL); 2256 return rc; 2257 2258 } 2259 2260 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu) 2261 { 2262 struct net_device *dev = card->dev; 2263 unsigned int new_mtu; 2264 2265 if (!max_mtu) { 2266 /* IQD needs accurate max MTU to set up its RX buffers: */ 2267 if (IS_IQD(card)) 2268 return -EINVAL; 2269 /* tolerate quirky HW: */ 2270 max_mtu = ETH_MAX_MTU; 2271 } 2272 2273 rtnl_lock(); 2274 if (IS_IQD(card)) { 2275 /* move any device with default MTU to new max MTU: */ 2276 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu; 2277 2278 /* adjust RX buffer size to new max MTU: */ 2279 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE; 2280 if (dev->max_mtu && dev->max_mtu != max_mtu) 2281 qeth_free_qdio_buffers(card); 2282 } else { 2283 if (dev->mtu) 2284 new_mtu = dev->mtu; 2285 /* default MTUs for first setup: */ 2286 else if (card->options.layer2) 2287 new_mtu = ETH_DATA_LEN; 2288 else 2289 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */ 2290 } 2291 2292 dev->max_mtu = max_mtu; 2293 dev->mtu = min(new_mtu, max_mtu); 2294 rtnl_unlock(); 2295 return 0; 2296 } 2297 2298 static int qeth_get_mtu_outof_framesize(int framesize) 2299 { 2300 switch (framesize) { 2301 case 0x4000: 2302 return 8192; 2303 case 0x6000: 2304 return 16384; 2305 case 0xa000: 2306 return 32768; 2307 case 0xffff: 2308 return 57344; 2309 default: 2310 return 0; 2311 } 2312 } 2313 2314 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2315 unsigned long data) 2316 { 2317 2318 __u16 mtu, framesize; 2319 __u16 len; 2320 __u8 link_type; 2321 struct qeth_cmd_buffer *iob; 2322 2323 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2324 2325 iob = (struct qeth_cmd_buffer *) data; 2326 memcpy(&card->token.ulp_filter_r, 2327 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2328 QETH_MPC_TOKEN_LENGTH); 2329 if (card->info.type == QETH_CARD_TYPE_IQD) { 2330 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2331 mtu = qeth_get_mtu_outof_framesize(framesize); 2332 } else { 2333 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data); 2334 } 2335 *(u16 *)reply->param = mtu; 2336 2337 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2338 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2339 memcpy(&link_type, 2340 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2341 card->info.link_type = link_type; 2342 } else 2343 card->info.link_type = 0; 2344 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2345 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2346 return 0; 2347 } 2348 2349 static u8 qeth_mpc_select_prot_type(struct qeth_card *card) 2350 { 2351 if (IS_OSN(card)) 2352 return QETH_PROT_OSN2; 2353 return (card->options.layer2 == 1) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP; 2354 } 2355 2356 static int qeth_ulp_enable(struct qeth_card *card) 2357 { 2358 u8 prot_type = qeth_mpc_select_prot_type(card); 2359 struct qeth_cmd_buffer *iob; 2360 u16 max_mtu; 2361 int rc; 2362 2363 /*FIXME: trace view callbacks*/ 2364 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2365 2366 iob = qeth_wait_for_buffer(&card->write); 2367 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2368 2369 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port; 2370 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2371 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2372 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2373 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2374 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2375 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2376 qeth_ulp_enable_cb, &max_mtu); 2377 if (rc) 2378 return rc; 2379 return qeth_update_max_mtu(card, max_mtu); 2380 } 2381 2382 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2383 unsigned long data) 2384 { 2385 struct qeth_cmd_buffer *iob; 2386 2387 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2388 2389 iob = (struct qeth_cmd_buffer *) data; 2390 memcpy(&card->token.ulp_connection_r, 2391 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2392 QETH_MPC_TOKEN_LENGTH); 2393 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2394 3)) { 2395 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2396 dev_err(&card->gdev->dev, "A connection could not be " 2397 "established because of an OLM limit\n"); 2398 iob->rc = -EMLINK; 2399 } 2400 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2401 return 0; 2402 } 2403 2404 static int qeth_ulp_setup(struct qeth_card *card) 2405 { 2406 int rc; 2407 __u16 temp; 2408 struct qeth_cmd_buffer *iob; 2409 struct ccw_dev_id dev_id; 2410 2411 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2412 2413 iob = qeth_wait_for_buffer(&card->write); 2414 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2415 2416 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2417 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2418 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2419 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2420 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2421 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2422 2423 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2424 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2425 temp = (card->info.cula << 8) + card->info.unit_addr2; 2426 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2427 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2428 qeth_ulp_setup_cb, NULL); 2429 return rc; 2430 } 2431 2432 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2433 { 2434 struct qeth_qdio_out_buffer *newbuf; 2435 2436 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2437 if (!newbuf) 2438 return -ENOMEM; 2439 2440 newbuf->buffer = q->qdio_bufs[bidx]; 2441 skb_queue_head_init(&newbuf->skb_list); 2442 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2443 newbuf->q = q; 2444 newbuf->next_pending = q->bufs[bidx]; 2445 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2446 q->bufs[bidx] = newbuf; 2447 return 0; 2448 } 2449 2450 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2451 { 2452 if (!q) 2453 return; 2454 2455 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2456 kfree(q); 2457 } 2458 2459 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2460 { 2461 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2462 2463 if (!q) 2464 return NULL; 2465 2466 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2467 kfree(q); 2468 return NULL; 2469 } 2470 return q; 2471 } 2472 2473 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2474 { 2475 int i, j; 2476 2477 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2478 2479 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2480 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2481 return 0; 2482 2483 QETH_DBF_TEXT(SETUP, 2, "inq"); 2484 card->qdio.in_q = qeth_alloc_qdio_queue(); 2485 if (!card->qdio.in_q) 2486 goto out_nomem; 2487 2488 /* inbound buffer pool */ 2489 if (qeth_alloc_buffer_pool(card)) 2490 goto out_freeinq; 2491 2492 /* outbound */ 2493 card->qdio.out_qs = 2494 kcalloc(card->qdio.no_out_queues, 2495 sizeof(struct qeth_qdio_out_q *), 2496 GFP_KERNEL); 2497 if (!card->qdio.out_qs) 2498 goto out_freepool; 2499 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2500 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2501 if (!card->qdio.out_qs[i]) 2502 goto out_freeoutq; 2503 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2504 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2505 card->qdio.out_qs[i]->queue_no = i; 2506 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2507 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2508 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2509 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2510 goto out_freeoutqbufs; 2511 } 2512 } 2513 2514 /* completion */ 2515 if (qeth_alloc_cq(card)) 2516 goto out_freeoutq; 2517 2518 return 0; 2519 2520 out_freeoutqbufs: 2521 while (j > 0) { 2522 --j; 2523 kmem_cache_free(qeth_qdio_outbuf_cache, 2524 card->qdio.out_qs[i]->bufs[j]); 2525 card->qdio.out_qs[i]->bufs[j] = NULL; 2526 } 2527 out_freeoutq: 2528 while (i > 0) { 2529 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2530 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2531 } 2532 kfree(card->qdio.out_qs); 2533 card->qdio.out_qs = NULL; 2534 out_freepool: 2535 qeth_free_buffer_pool(card); 2536 out_freeinq: 2537 qeth_free_qdio_queue(card->qdio.in_q); 2538 card->qdio.in_q = NULL; 2539 out_nomem: 2540 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2541 return -ENOMEM; 2542 } 2543 2544 static void qeth_free_qdio_buffers(struct qeth_card *card) 2545 { 2546 int i, j; 2547 2548 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2549 QETH_QDIO_UNINITIALIZED) 2550 return; 2551 2552 qeth_free_cq(card); 2553 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2554 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2555 if (card->qdio.in_q->bufs[j].rx_skb) 2556 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2557 } 2558 qeth_free_qdio_queue(card->qdio.in_q); 2559 card->qdio.in_q = NULL; 2560 /* inbound buffer pool */ 2561 qeth_free_buffer_pool(card); 2562 /* free outbound qdio_qs */ 2563 if (card->qdio.out_qs) { 2564 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2565 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2566 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2567 } 2568 kfree(card->qdio.out_qs); 2569 card->qdio.out_qs = NULL; 2570 } 2571 } 2572 2573 static void qeth_create_qib_param_field(struct qeth_card *card, 2574 char *param_field) 2575 { 2576 2577 param_field[0] = _ascebc['P']; 2578 param_field[1] = _ascebc['C']; 2579 param_field[2] = _ascebc['I']; 2580 param_field[3] = _ascebc['T']; 2581 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2582 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2583 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2584 } 2585 2586 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2587 char *param_field) 2588 { 2589 param_field[16] = _ascebc['B']; 2590 param_field[17] = _ascebc['L']; 2591 param_field[18] = _ascebc['K']; 2592 param_field[19] = _ascebc['T']; 2593 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2594 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2595 *((unsigned int *) (¶m_field[28])) = 2596 card->info.blkt.inter_packet_jumbo; 2597 } 2598 2599 static int qeth_qdio_activate(struct qeth_card *card) 2600 { 2601 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2602 return qdio_activate(CARD_DDEV(card)); 2603 } 2604 2605 static int qeth_dm_act(struct qeth_card *card) 2606 { 2607 int rc; 2608 struct qeth_cmd_buffer *iob; 2609 2610 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2611 2612 iob = qeth_wait_for_buffer(&card->write); 2613 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2614 2615 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2616 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2617 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2618 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2619 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2620 return rc; 2621 } 2622 2623 static int qeth_mpc_initialize(struct qeth_card *card) 2624 { 2625 int rc; 2626 2627 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2628 2629 rc = qeth_issue_next_read(card); 2630 if (rc) { 2631 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2632 return rc; 2633 } 2634 rc = qeth_cm_enable(card); 2635 if (rc) { 2636 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2637 goto out_qdio; 2638 } 2639 rc = qeth_cm_setup(card); 2640 if (rc) { 2641 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2642 goto out_qdio; 2643 } 2644 rc = qeth_ulp_enable(card); 2645 if (rc) { 2646 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2647 goto out_qdio; 2648 } 2649 rc = qeth_ulp_setup(card); 2650 if (rc) { 2651 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2652 goto out_qdio; 2653 } 2654 rc = qeth_alloc_qdio_buffers(card); 2655 if (rc) { 2656 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2657 goto out_qdio; 2658 } 2659 rc = qeth_qdio_establish(card); 2660 if (rc) { 2661 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2662 qeth_free_qdio_buffers(card); 2663 goto out_qdio; 2664 } 2665 rc = qeth_qdio_activate(card); 2666 if (rc) { 2667 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2668 goto out_qdio; 2669 } 2670 rc = qeth_dm_act(card); 2671 if (rc) { 2672 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2673 goto out_qdio; 2674 } 2675 2676 return 0; 2677 out_qdio: 2678 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2679 qdio_free(CARD_DDEV(card)); 2680 return rc; 2681 } 2682 2683 void qeth_print_status_message(struct qeth_card *card) 2684 { 2685 switch (card->info.type) { 2686 case QETH_CARD_TYPE_OSD: 2687 case QETH_CARD_TYPE_OSM: 2688 case QETH_CARD_TYPE_OSX: 2689 /* VM will use a non-zero first character 2690 * to indicate a HiperSockets like reporting 2691 * of the level OSA sets the first character to zero 2692 * */ 2693 if (!card->info.mcl_level[0]) { 2694 sprintf(card->info.mcl_level, "%02x%02x", 2695 card->info.mcl_level[2], 2696 card->info.mcl_level[3]); 2697 break; 2698 } 2699 /* fallthrough */ 2700 case QETH_CARD_TYPE_IQD: 2701 if ((card->info.guestlan) || 2702 (card->info.mcl_level[0] & 0x80)) { 2703 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2704 card->info.mcl_level[0]]; 2705 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2706 card->info.mcl_level[1]]; 2707 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2708 card->info.mcl_level[2]]; 2709 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2710 card->info.mcl_level[3]]; 2711 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2712 } 2713 break; 2714 default: 2715 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2716 } 2717 dev_info(&card->gdev->dev, 2718 "Device is a%s card%s%s%s\nwith link type %s.\n", 2719 qeth_get_cardname(card), 2720 (card->info.mcl_level[0]) ? " (level: " : "", 2721 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2722 (card->info.mcl_level[0]) ? ")" : "", 2723 qeth_get_cardname_short(card)); 2724 } 2725 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2726 2727 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2728 { 2729 struct qeth_buffer_pool_entry *entry; 2730 2731 QETH_CARD_TEXT(card, 5, "inwrklst"); 2732 2733 list_for_each_entry(entry, 2734 &card->qdio.init_pool.entry_list, init_list) { 2735 qeth_put_buffer_pool_entry(card, entry); 2736 } 2737 } 2738 2739 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2740 struct qeth_card *card) 2741 { 2742 struct list_head *plh; 2743 struct qeth_buffer_pool_entry *entry; 2744 int i, free; 2745 struct page *page; 2746 2747 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2748 return NULL; 2749 2750 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2751 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2752 free = 1; 2753 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2754 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2755 free = 0; 2756 break; 2757 } 2758 } 2759 if (free) { 2760 list_del_init(&entry->list); 2761 return entry; 2762 } 2763 } 2764 2765 /* no free buffer in pool so take first one and swap pages */ 2766 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2767 struct qeth_buffer_pool_entry, list); 2768 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2769 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2770 page = alloc_page(GFP_ATOMIC); 2771 if (!page) { 2772 return NULL; 2773 } else { 2774 free_page((unsigned long)entry->elements[i]); 2775 entry->elements[i] = page_address(page); 2776 if (card->options.performance_stats) 2777 card->perf_stats.sg_alloc_page_rx++; 2778 } 2779 } 2780 } 2781 list_del_init(&entry->list); 2782 return entry; 2783 } 2784 2785 static int qeth_init_input_buffer(struct qeth_card *card, 2786 struct qeth_qdio_buffer *buf) 2787 { 2788 struct qeth_buffer_pool_entry *pool_entry; 2789 int i; 2790 2791 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2792 buf->rx_skb = netdev_alloc_skb(card->dev, 2793 QETH_RX_PULL_LEN + ETH_HLEN); 2794 if (!buf->rx_skb) 2795 return 1; 2796 } 2797 2798 pool_entry = qeth_find_free_buffer_pool_entry(card); 2799 if (!pool_entry) 2800 return 1; 2801 2802 /* 2803 * since the buffer is accessed only from the input_tasklet 2804 * there shouldn't be a need to synchronize; also, since we use 2805 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2806 * buffers 2807 */ 2808 2809 buf->pool_entry = pool_entry; 2810 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2811 buf->buffer->element[i].length = PAGE_SIZE; 2812 buf->buffer->element[i].addr = pool_entry->elements[i]; 2813 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2814 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2815 else 2816 buf->buffer->element[i].eflags = 0; 2817 buf->buffer->element[i].sflags = 0; 2818 } 2819 return 0; 2820 } 2821 2822 int qeth_init_qdio_queues(struct qeth_card *card) 2823 { 2824 int i, j; 2825 int rc; 2826 2827 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2828 2829 /* inbound queue */ 2830 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2831 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2832 qeth_initialize_working_pool_list(card); 2833 /*give only as many buffers to hardware as we have buffer pool entries*/ 2834 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2835 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2836 card->qdio.in_q->next_buf_to_init = 2837 card->qdio.in_buf_pool.buf_count - 1; 2838 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2839 card->qdio.in_buf_pool.buf_count - 1); 2840 if (rc) { 2841 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2842 return rc; 2843 } 2844 2845 /* completion */ 2846 rc = qeth_cq_init(card); 2847 if (rc) { 2848 return rc; 2849 } 2850 2851 /* outbound queue */ 2852 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2853 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2854 QDIO_MAX_BUFFERS_PER_Q); 2855 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2856 qeth_clear_output_buffer(card->qdio.out_qs[i], 2857 card->qdio.out_qs[i]->bufs[j]); 2858 } 2859 card->qdio.out_qs[i]->card = card; 2860 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2861 card->qdio.out_qs[i]->do_pack = 0; 2862 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2863 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2864 atomic_set(&card->qdio.out_qs[i]->state, 2865 QETH_OUT_Q_UNLOCKED); 2866 } 2867 return 0; 2868 } 2869 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2870 2871 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2872 { 2873 switch (link_type) { 2874 case QETH_LINK_TYPE_HSTR: 2875 return 2; 2876 default: 2877 return 1; 2878 } 2879 } 2880 2881 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2882 struct qeth_ipa_cmd *cmd, __u8 command, 2883 enum qeth_prot_versions prot) 2884 { 2885 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2886 cmd->hdr.command = command; 2887 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2888 /* cmd->hdr.seqno is set by qeth_send_control_data() */ 2889 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2890 cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port; 2891 if (card->options.layer2) 2892 cmd->hdr.prim_version_no = 2; 2893 else 2894 cmd->hdr.prim_version_no = 1; 2895 cmd->hdr.param_count = 1; 2896 cmd->hdr.prot_version = prot; 2897 cmd->hdr.ipa_supported = 0; 2898 cmd->hdr.ipa_enabled = 0; 2899 } 2900 2901 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2902 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2903 { 2904 struct qeth_cmd_buffer *iob; 2905 2906 iob = qeth_get_buffer(&card->write); 2907 if (iob) { 2908 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot); 2909 } else { 2910 dev_warn(&card->gdev->dev, 2911 "The qeth driver ran out of channel command buffers\n"); 2912 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2913 dev_name(&card->gdev->dev)); 2914 } 2915 2916 return iob; 2917 } 2918 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2919 2920 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob) 2921 { 2922 u8 prot_type = qeth_mpc_select_prot_type(card); 2923 2924 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2925 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2926 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2927 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2928 } 2929 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2930 2931 /** 2932 * qeth_send_ipa_cmd() - send an IPA command 2933 * 2934 * See qeth_send_control_data() for explanation of the arguments. 2935 */ 2936 2937 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2938 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2939 unsigned long), 2940 void *reply_param) 2941 { 2942 int rc; 2943 2944 QETH_CARD_TEXT(card, 4, "sendipa"); 2945 qeth_prepare_ipa_cmd(card, iob); 2946 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2947 iob, reply_cb, reply_param); 2948 if (rc == -ETIME) { 2949 qeth_clear_ipacmd_list(card); 2950 qeth_schedule_recovery(card); 2951 } 2952 return rc; 2953 } 2954 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2955 2956 static int qeth_send_startlan(struct qeth_card *card) 2957 { 2958 int rc; 2959 struct qeth_cmd_buffer *iob; 2960 2961 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2962 2963 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2964 if (!iob) 2965 return -ENOMEM; 2966 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2967 return rc; 2968 } 2969 2970 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 2971 { 2972 if (!cmd->hdr.return_code) 2973 cmd->hdr.return_code = 2974 cmd->data.setadapterparms.hdr.return_code; 2975 return cmd->hdr.return_code; 2976 } 2977 2978 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2979 struct qeth_reply *reply, unsigned long data) 2980 { 2981 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2982 2983 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2984 if (qeth_setadpparms_inspect_rc(cmd)) 2985 return 0; 2986 2987 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2988 card->info.link_type = 2989 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2990 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2991 } 2992 card->options.adp.supported_funcs = 2993 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2994 return 0; 2995 } 2996 2997 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2998 __u32 command, __u32 cmdlen) 2999 { 3000 struct qeth_cmd_buffer *iob; 3001 struct qeth_ipa_cmd *cmd; 3002 3003 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3004 QETH_PROT_IPV4); 3005 if (iob) { 3006 cmd = __ipa_cmd(iob); 3007 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3008 cmd->data.setadapterparms.hdr.command_code = command; 3009 cmd->data.setadapterparms.hdr.used_total = 1; 3010 cmd->data.setadapterparms.hdr.seq_no = 1; 3011 } 3012 3013 return iob; 3014 } 3015 3016 static int qeth_query_setadapterparms(struct qeth_card *card) 3017 { 3018 int rc; 3019 struct qeth_cmd_buffer *iob; 3020 3021 QETH_CARD_TEXT(card, 3, "queryadp"); 3022 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3023 sizeof(struct qeth_ipacmd_setadpparms)); 3024 if (!iob) 3025 return -ENOMEM; 3026 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3027 return rc; 3028 } 3029 3030 static int qeth_query_ipassists_cb(struct qeth_card *card, 3031 struct qeth_reply *reply, unsigned long data) 3032 { 3033 struct qeth_ipa_cmd *cmd; 3034 3035 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3036 3037 cmd = (struct qeth_ipa_cmd *) data; 3038 3039 switch (cmd->hdr.return_code) { 3040 case IPA_RC_NOTSUPP: 3041 case IPA_RC_L2_UNSUPPORTED_CMD: 3042 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3043 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3044 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3045 return -0; 3046 default: 3047 if (cmd->hdr.return_code) { 3048 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3049 "rc=%d\n", 3050 dev_name(&card->gdev->dev), 3051 cmd->hdr.return_code); 3052 return 0; 3053 } 3054 } 3055 3056 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3057 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3058 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3059 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3060 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3061 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3062 } else 3063 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3064 "\n", dev_name(&card->gdev->dev)); 3065 return 0; 3066 } 3067 3068 static int qeth_query_ipassists(struct qeth_card *card, 3069 enum qeth_prot_versions prot) 3070 { 3071 int rc; 3072 struct qeth_cmd_buffer *iob; 3073 3074 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3075 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3076 if (!iob) 3077 return -ENOMEM; 3078 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3079 return rc; 3080 } 3081 3082 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3083 struct qeth_reply *reply, unsigned long data) 3084 { 3085 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3086 struct qeth_query_switch_attributes *attrs; 3087 struct qeth_switch_info *sw_info; 3088 3089 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3090 if (qeth_setadpparms_inspect_rc(cmd)) 3091 return 0; 3092 3093 sw_info = (struct qeth_switch_info *)reply->param; 3094 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3095 sw_info->capabilities = attrs->capabilities; 3096 sw_info->settings = attrs->settings; 3097 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3098 sw_info->settings); 3099 return 0; 3100 } 3101 3102 int qeth_query_switch_attributes(struct qeth_card *card, 3103 struct qeth_switch_info *sw_info) 3104 { 3105 struct qeth_cmd_buffer *iob; 3106 3107 QETH_CARD_TEXT(card, 2, "qswiattr"); 3108 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3109 return -EOPNOTSUPP; 3110 if (!netif_carrier_ok(card->dev)) 3111 return -ENOMEDIUM; 3112 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3113 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3114 if (!iob) 3115 return -ENOMEM; 3116 return qeth_send_ipa_cmd(card, iob, 3117 qeth_query_switch_attributes_cb, sw_info); 3118 } 3119 3120 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3121 struct qeth_reply *reply, unsigned long data) 3122 { 3123 struct qeth_ipa_cmd *cmd; 3124 __u16 rc; 3125 3126 cmd = (struct qeth_ipa_cmd *)data; 3127 rc = cmd->hdr.return_code; 3128 if (rc) 3129 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3130 else 3131 card->info.diagass_support = cmd->data.diagass.ext; 3132 return 0; 3133 } 3134 3135 static int qeth_query_setdiagass(struct qeth_card *card) 3136 { 3137 struct qeth_cmd_buffer *iob; 3138 struct qeth_ipa_cmd *cmd; 3139 3140 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3141 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3142 if (!iob) 3143 return -ENOMEM; 3144 cmd = __ipa_cmd(iob); 3145 cmd->data.diagass.subcmd_len = 16; 3146 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3147 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3148 } 3149 3150 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3151 { 3152 unsigned long info = get_zeroed_page(GFP_KERNEL); 3153 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3154 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3155 struct ccw_dev_id ccwid; 3156 int level; 3157 3158 tid->chpid = card->info.chpid; 3159 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3160 tid->ssid = ccwid.ssid; 3161 tid->devno = ccwid.devno; 3162 if (!info) 3163 return; 3164 level = stsi(NULL, 0, 0, 0); 3165 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3166 tid->lparnr = info222->lpar_number; 3167 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3168 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3169 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3170 } 3171 free_page(info); 3172 return; 3173 } 3174 3175 static int qeth_hw_trap_cb(struct qeth_card *card, 3176 struct qeth_reply *reply, unsigned long data) 3177 { 3178 struct qeth_ipa_cmd *cmd; 3179 __u16 rc; 3180 3181 cmd = (struct qeth_ipa_cmd *)data; 3182 rc = cmd->hdr.return_code; 3183 if (rc) 3184 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3185 return 0; 3186 } 3187 3188 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3189 { 3190 struct qeth_cmd_buffer *iob; 3191 struct qeth_ipa_cmd *cmd; 3192 3193 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3194 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3195 if (!iob) 3196 return -ENOMEM; 3197 cmd = __ipa_cmd(iob); 3198 cmd->data.diagass.subcmd_len = 80; 3199 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3200 cmd->data.diagass.type = 1; 3201 cmd->data.diagass.action = action; 3202 switch (action) { 3203 case QETH_DIAGS_TRAP_ARM: 3204 cmd->data.diagass.options = 0x0003; 3205 cmd->data.diagass.ext = 0x00010000 + 3206 sizeof(struct qeth_trap_id); 3207 qeth_get_trap_id(card, 3208 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3209 break; 3210 case QETH_DIAGS_TRAP_DISARM: 3211 cmd->data.diagass.options = 0x0001; 3212 break; 3213 case QETH_DIAGS_TRAP_CAPTURE: 3214 break; 3215 } 3216 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3217 } 3218 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3219 3220 static int qeth_check_qdio_errors(struct qeth_card *card, 3221 struct qdio_buffer *buf, 3222 unsigned int qdio_error, 3223 const char *dbftext) 3224 { 3225 if (qdio_error) { 3226 QETH_CARD_TEXT(card, 2, dbftext); 3227 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3228 buf->element[15].sflags); 3229 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3230 buf->element[14].sflags); 3231 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3232 if ((buf->element[15].sflags) == 0x12) { 3233 card->stats.rx_dropped++; 3234 return 0; 3235 } else 3236 return 1; 3237 } 3238 return 0; 3239 } 3240 3241 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3242 { 3243 struct qeth_qdio_q *queue = card->qdio.in_q; 3244 struct list_head *lh; 3245 int count; 3246 int i; 3247 int rc; 3248 int newcount = 0; 3249 3250 count = (index < queue->next_buf_to_init)? 3251 card->qdio.in_buf_pool.buf_count - 3252 (queue->next_buf_to_init - index) : 3253 card->qdio.in_buf_pool.buf_count - 3254 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3255 /* only requeue at a certain threshold to avoid SIGAs */ 3256 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3257 for (i = queue->next_buf_to_init; 3258 i < queue->next_buf_to_init + count; ++i) { 3259 if (qeth_init_input_buffer(card, 3260 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3261 break; 3262 } else { 3263 newcount++; 3264 } 3265 } 3266 3267 if (newcount < count) { 3268 /* we are in memory shortage so we switch back to 3269 traditional skb allocation and drop packages */ 3270 atomic_set(&card->force_alloc_skb, 3); 3271 count = newcount; 3272 } else { 3273 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3274 } 3275 3276 if (!count) { 3277 i = 0; 3278 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3279 i++; 3280 if (i == card->qdio.in_buf_pool.buf_count) { 3281 QETH_CARD_TEXT(card, 2, "qsarbw"); 3282 card->reclaim_index = index; 3283 schedule_delayed_work( 3284 &card->buffer_reclaim_work, 3285 QETH_RECLAIM_WORK_TIME); 3286 } 3287 return; 3288 } 3289 3290 /* 3291 * according to old code it should be avoided to requeue all 3292 * 128 buffers in order to benefit from PCI avoidance. 3293 * this function keeps at least one buffer (the buffer at 3294 * 'index') un-requeued -> this buffer is the first buffer that 3295 * will be requeued the next time 3296 */ 3297 if (card->options.performance_stats) { 3298 card->perf_stats.inbound_do_qdio_cnt++; 3299 card->perf_stats.inbound_do_qdio_start_time = 3300 qeth_get_micros(); 3301 } 3302 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3303 queue->next_buf_to_init, count); 3304 if (card->options.performance_stats) 3305 card->perf_stats.inbound_do_qdio_time += 3306 qeth_get_micros() - 3307 card->perf_stats.inbound_do_qdio_start_time; 3308 if (rc) { 3309 QETH_CARD_TEXT(card, 2, "qinberr"); 3310 } 3311 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3312 QDIO_MAX_BUFFERS_PER_Q; 3313 } 3314 } 3315 3316 static void qeth_buffer_reclaim_work(struct work_struct *work) 3317 { 3318 struct qeth_card *card = container_of(work, struct qeth_card, 3319 buffer_reclaim_work.work); 3320 3321 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3322 qeth_queue_input_buffer(card, card->reclaim_index); 3323 } 3324 3325 static void qeth_handle_send_error(struct qeth_card *card, 3326 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3327 { 3328 int sbalf15 = buffer->buffer->element[15].sflags; 3329 3330 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3331 if (card->info.type == QETH_CARD_TYPE_IQD) { 3332 if (sbalf15 == 0) { 3333 qdio_err = 0; 3334 } else { 3335 qdio_err = 1; 3336 } 3337 } 3338 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3339 3340 if (!qdio_err) 3341 return; 3342 3343 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3344 return; 3345 3346 QETH_CARD_TEXT(card, 1, "lnkfail"); 3347 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3348 (u16)qdio_err, (u8)sbalf15); 3349 } 3350 3351 /** 3352 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3353 * @queue: queue to check for packing buffer 3354 * 3355 * Returns number of buffers that were prepared for flush. 3356 */ 3357 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3358 { 3359 struct qeth_qdio_out_buffer *buffer; 3360 3361 buffer = queue->bufs[queue->next_buf_to_fill]; 3362 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3363 (buffer->next_element_to_fill > 0)) { 3364 /* it's a packing buffer */ 3365 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3366 queue->next_buf_to_fill = 3367 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3368 return 1; 3369 } 3370 return 0; 3371 } 3372 3373 /* 3374 * Switched to packing state if the number of used buffers on a queue 3375 * reaches a certain limit. 3376 */ 3377 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3378 { 3379 if (!queue->do_pack) { 3380 if (atomic_read(&queue->used_buffers) 3381 >= QETH_HIGH_WATERMARK_PACK){ 3382 /* switch non-PACKING -> PACKING */ 3383 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3384 if (queue->card->options.performance_stats) 3385 queue->card->perf_stats.sc_dp_p++; 3386 queue->do_pack = 1; 3387 } 3388 } 3389 } 3390 3391 /* 3392 * Switches from packing to non-packing mode. If there is a packing 3393 * buffer on the queue this buffer will be prepared to be flushed. 3394 * In that case 1 is returned to inform the caller. If no buffer 3395 * has to be flushed, zero is returned. 3396 */ 3397 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3398 { 3399 if (queue->do_pack) { 3400 if (atomic_read(&queue->used_buffers) 3401 <= QETH_LOW_WATERMARK_PACK) { 3402 /* switch PACKING -> non-PACKING */ 3403 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3404 if (queue->card->options.performance_stats) 3405 queue->card->perf_stats.sc_p_dp++; 3406 queue->do_pack = 0; 3407 return qeth_prep_flush_pack_buffer(queue); 3408 } 3409 } 3410 return 0; 3411 } 3412 3413 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3414 int count) 3415 { 3416 struct qeth_qdio_out_buffer *buf; 3417 int rc; 3418 int i; 3419 unsigned int qdio_flags; 3420 3421 for (i = index; i < index + count; ++i) { 3422 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3423 buf = queue->bufs[bidx]; 3424 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3425 SBAL_EFLAGS_LAST_ENTRY; 3426 3427 if (queue->bufstates) 3428 queue->bufstates[bidx].user = buf; 3429 3430 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3431 continue; 3432 3433 if (!queue->do_pack) { 3434 if ((atomic_read(&queue->used_buffers) >= 3435 (QETH_HIGH_WATERMARK_PACK - 3436 QETH_WATERMARK_PACK_FUZZ)) && 3437 !atomic_read(&queue->set_pci_flags_count)) { 3438 /* it's likely that we'll go to packing 3439 * mode soon */ 3440 atomic_inc(&queue->set_pci_flags_count); 3441 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3442 } 3443 } else { 3444 if (!atomic_read(&queue->set_pci_flags_count)) { 3445 /* 3446 * there's no outstanding PCI any more, so we 3447 * have to request a PCI to be sure the the PCI 3448 * will wake at some time in the future then we 3449 * can flush packed buffers that might still be 3450 * hanging around, which can happen if no 3451 * further send was requested by the stack 3452 */ 3453 atomic_inc(&queue->set_pci_flags_count); 3454 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3455 } 3456 } 3457 } 3458 3459 netif_trans_update(queue->card->dev); 3460 if (queue->card->options.performance_stats) { 3461 queue->card->perf_stats.outbound_do_qdio_cnt++; 3462 queue->card->perf_stats.outbound_do_qdio_start_time = 3463 qeth_get_micros(); 3464 } 3465 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3466 if (atomic_read(&queue->set_pci_flags_count)) 3467 qdio_flags |= QDIO_FLAG_PCI_OUT; 3468 atomic_add(count, &queue->used_buffers); 3469 3470 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3471 queue->queue_no, index, count); 3472 if (queue->card->options.performance_stats) 3473 queue->card->perf_stats.outbound_do_qdio_time += 3474 qeth_get_micros() - 3475 queue->card->perf_stats.outbound_do_qdio_start_time; 3476 if (rc) { 3477 queue->card->stats.tx_errors += count; 3478 /* ignore temporary SIGA errors without busy condition */ 3479 if (rc == -ENOBUFS) 3480 return; 3481 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3482 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3483 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3484 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3485 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3486 3487 /* this must not happen under normal circumstances. if it 3488 * happens something is really wrong -> recover */ 3489 qeth_schedule_recovery(queue->card); 3490 return; 3491 } 3492 if (queue->card->options.performance_stats) 3493 queue->card->perf_stats.bufs_sent += count; 3494 } 3495 3496 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3497 { 3498 int index; 3499 int flush_cnt = 0; 3500 int q_was_packing = 0; 3501 3502 /* 3503 * check if weed have to switch to non-packing mode or if 3504 * we have to get a pci flag out on the queue 3505 */ 3506 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3507 !atomic_read(&queue->set_pci_flags_count)) { 3508 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3509 QETH_OUT_Q_UNLOCKED) { 3510 /* 3511 * If we get in here, there was no action in 3512 * do_send_packet. So, we check if there is a 3513 * packing buffer to be flushed here. 3514 */ 3515 netif_stop_queue(queue->card->dev); 3516 index = queue->next_buf_to_fill; 3517 q_was_packing = queue->do_pack; 3518 /* queue->do_pack may change */ 3519 barrier(); 3520 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3521 if (!flush_cnt && 3522 !atomic_read(&queue->set_pci_flags_count)) 3523 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3524 if (queue->card->options.performance_stats && 3525 q_was_packing) 3526 queue->card->perf_stats.bufs_sent_pack += 3527 flush_cnt; 3528 if (flush_cnt) 3529 qeth_flush_buffers(queue, index, flush_cnt); 3530 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3531 } 3532 } 3533 } 3534 3535 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3536 unsigned long card_ptr) 3537 { 3538 struct qeth_card *card = (struct qeth_card *)card_ptr; 3539 3540 if (card->dev->flags & IFF_UP) 3541 napi_schedule(&card->napi); 3542 } 3543 3544 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3545 { 3546 int rc; 3547 3548 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3549 rc = -1; 3550 goto out; 3551 } else { 3552 if (card->options.cq == cq) { 3553 rc = 0; 3554 goto out; 3555 } 3556 3557 if (card->state != CARD_STATE_DOWN && 3558 card->state != CARD_STATE_RECOVER) { 3559 rc = -1; 3560 goto out; 3561 } 3562 3563 qeth_free_qdio_buffers(card); 3564 card->options.cq = cq; 3565 rc = 0; 3566 } 3567 out: 3568 return rc; 3569 3570 } 3571 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3572 3573 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err, 3574 unsigned int queue, int first_element, 3575 int count) 3576 { 3577 struct qeth_qdio_q *cq = card->qdio.c_q; 3578 int i; 3579 int rc; 3580 3581 if (!qeth_is_cq(card, queue)) 3582 goto out; 3583 3584 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3585 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3586 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3587 3588 if (qdio_err) { 3589 netif_stop_queue(card->dev); 3590 qeth_schedule_recovery(card); 3591 goto out; 3592 } 3593 3594 if (card->options.performance_stats) { 3595 card->perf_stats.cq_cnt++; 3596 card->perf_stats.cq_start_time = qeth_get_micros(); 3597 } 3598 3599 for (i = first_element; i < first_element + count; ++i) { 3600 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3601 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3602 int e = 0; 3603 3604 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3605 buffer->element[e].addr) { 3606 unsigned long phys_aob_addr; 3607 3608 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3609 qeth_qdio_handle_aob(card, phys_aob_addr); 3610 ++e; 3611 } 3612 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER); 3613 } 3614 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3615 card->qdio.c_q->next_buf_to_init, 3616 count); 3617 if (rc) { 3618 dev_warn(&card->gdev->dev, 3619 "QDIO reported an error, rc=%i\n", rc); 3620 QETH_CARD_TEXT(card, 2, "qcqherr"); 3621 } 3622 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3623 + count) % QDIO_MAX_BUFFERS_PER_Q; 3624 3625 netif_wake_queue(card->dev); 3626 3627 if (card->options.performance_stats) { 3628 int delta_t = qeth_get_micros(); 3629 delta_t -= card->perf_stats.cq_start_time; 3630 card->perf_stats.cq_time += delta_t; 3631 } 3632 out: 3633 return; 3634 } 3635 3636 static void qeth_qdio_input_handler(struct ccw_device *ccwdev, 3637 unsigned int qdio_err, int queue, 3638 int first_elem, int count, 3639 unsigned long card_ptr) 3640 { 3641 struct qeth_card *card = (struct qeth_card *)card_ptr; 3642 3643 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3644 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3645 3646 if (qeth_is_cq(card, queue)) 3647 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3648 else if (qdio_err) 3649 qeth_schedule_recovery(card); 3650 } 3651 3652 static void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3653 unsigned int qdio_error, int __queue, 3654 int first_element, int count, 3655 unsigned long card_ptr) 3656 { 3657 struct qeth_card *card = (struct qeth_card *) card_ptr; 3658 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3659 struct qeth_qdio_out_buffer *buffer; 3660 int i; 3661 3662 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3663 if (qdio_error & QDIO_ERROR_FATAL) { 3664 QETH_CARD_TEXT(card, 2, "achkcond"); 3665 netif_stop_queue(card->dev); 3666 qeth_schedule_recovery(card); 3667 return; 3668 } 3669 if (card->options.performance_stats) { 3670 card->perf_stats.outbound_handler_cnt++; 3671 card->perf_stats.outbound_handler_start_time = 3672 qeth_get_micros(); 3673 } 3674 for (i = first_element; i < (first_element + count); ++i) { 3675 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3676 buffer = queue->bufs[bidx]; 3677 qeth_handle_send_error(card, buffer, qdio_error); 3678 3679 if (queue->bufstates && 3680 (queue->bufstates[bidx].flags & 3681 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3682 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3683 3684 if (atomic_cmpxchg(&buffer->state, 3685 QETH_QDIO_BUF_PRIMED, 3686 QETH_QDIO_BUF_PENDING) == 3687 QETH_QDIO_BUF_PRIMED) { 3688 qeth_notify_skbs(queue, buffer, 3689 TX_NOTIFY_PENDING); 3690 } 3691 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3692 3693 /* prepare the queue slot for re-use: */ 3694 qeth_scrub_qdio_buffer(buffer->buffer, 3695 QETH_MAX_BUFFER_ELEMENTS(card)); 3696 if (qeth_init_qdio_out_buf(queue, bidx)) { 3697 QETH_CARD_TEXT(card, 2, "outofbuf"); 3698 qeth_schedule_recovery(card); 3699 } 3700 } else { 3701 if (card->options.cq == QETH_CQ_ENABLED) { 3702 enum iucv_tx_notify n; 3703 3704 n = qeth_compute_cq_notification( 3705 buffer->buffer->element[15].sflags, 0); 3706 qeth_notify_skbs(queue, buffer, n); 3707 } 3708 3709 qeth_clear_output_buffer(queue, buffer); 3710 } 3711 qeth_cleanup_handled_pending(queue, bidx, 0); 3712 } 3713 atomic_sub(count, &queue->used_buffers); 3714 /* check if we need to do something on this outbound queue */ 3715 if (card->info.type != QETH_CARD_TYPE_IQD) 3716 qeth_check_outbound_queue(queue); 3717 3718 netif_wake_queue(queue->card->dev); 3719 if (card->options.performance_stats) 3720 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3721 card->perf_stats.outbound_handler_start_time; 3722 } 3723 3724 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3725 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3726 { 3727 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3728 return 2; 3729 return queue_num; 3730 } 3731 3732 /** 3733 * Note: Function assumes that we have 4 outbound queues. 3734 */ 3735 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3736 int ipv) 3737 { 3738 __be16 *tci; 3739 u8 tos; 3740 3741 switch (card->qdio.do_prio_queueing) { 3742 case QETH_PRIO_Q_ING_TOS: 3743 case QETH_PRIO_Q_ING_PREC: 3744 switch (ipv) { 3745 case 4: 3746 tos = ipv4_get_dsfield(ip_hdr(skb)); 3747 break; 3748 case 6: 3749 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3750 break; 3751 default: 3752 return card->qdio.default_out_queue; 3753 } 3754 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3755 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3756 if (tos & IPTOS_MINCOST) 3757 return qeth_cut_iqd_prio(card, 3); 3758 if (tos & IPTOS_RELIABILITY) 3759 return 2; 3760 if (tos & IPTOS_THROUGHPUT) 3761 return 1; 3762 if (tos & IPTOS_LOWDELAY) 3763 return 0; 3764 break; 3765 case QETH_PRIO_Q_ING_SKB: 3766 if (skb->priority > 5) 3767 return 0; 3768 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3769 case QETH_PRIO_Q_ING_VLAN: 3770 tci = &((struct ethhdr *)skb->data)->h_proto; 3771 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3772 return qeth_cut_iqd_prio(card, 3773 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3774 break; 3775 default: 3776 break; 3777 } 3778 return card->qdio.default_out_queue; 3779 } 3780 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3781 3782 /** 3783 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3784 * @skb: SKB address 3785 * 3786 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3787 * fragmented part of the SKB. Returns zero for linear SKB. 3788 */ 3789 int qeth_get_elements_for_frags(struct sk_buff *skb) 3790 { 3791 int cnt, elements = 0; 3792 3793 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3794 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3795 3796 elements += qeth_get_elements_for_range( 3797 (addr_t)skb_frag_address(frag), 3798 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3799 } 3800 return elements; 3801 } 3802 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3803 3804 static unsigned int qeth_count_elements(struct sk_buff *skb, int data_offset) 3805 { 3806 unsigned int elements = qeth_get_elements_for_frags(skb); 3807 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3808 addr_t start = (addr_t)skb->data + data_offset; 3809 3810 if (start != end) 3811 elements += qeth_get_elements_for_range(start, end); 3812 return elements; 3813 } 3814 3815 /** 3816 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3817 * @card: qeth card structure, to check max. elems. 3818 * @skb: SKB address 3819 * @extra_elems: extra elems needed, to check against max. 3820 * @data_offset: range starts at skb->data + data_offset 3821 * 3822 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3823 * skb data, including linear part and fragments. Checks if the result plus 3824 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3825 * Note: extra_elems is not included in the returned result. 3826 */ 3827 int qeth_get_elements_no(struct qeth_card *card, 3828 struct sk_buff *skb, int extra_elems, int data_offset) 3829 { 3830 int elements = qeth_count_elements(skb, data_offset); 3831 3832 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3833 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3834 "(Number=%d / Length=%d). Discarded.\n", 3835 elements + extra_elems, skb->len); 3836 return 0; 3837 } 3838 return elements; 3839 } 3840 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3841 3842 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3843 { 3844 int hroom, inpage, rest; 3845 3846 if (((unsigned long)skb->data & PAGE_MASK) != 3847 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3848 hroom = skb_headroom(skb); 3849 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3850 rest = len - inpage; 3851 if (rest > hroom) 3852 return 1; 3853 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3854 skb->data -= rest; 3855 skb->tail -= rest; 3856 *hdr = (struct qeth_hdr *)skb->data; 3857 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3858 } 3859 return 0; 3860 } 3861 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3862 3863 /** 3864 * qeth_add_hw_header() - add a HW header to an skb. 3865 * @skb: skb that the HW header should be added to. 3866 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3867 * it contains a valid pointer to a qeth_hdr. 3868 * @hdr_len: length of the HW header. 3869 * @proto_len: length of protocol headers that need to be in same page as the 3870 * HW header. 3871 * 3872 * Returns the pushed length. If the header can't be pushed on 3873 * (eg. because it would cross a page boundary), it is allocated from 3874 * the cache instead and 0 is returned. 3875 * The number of needed buffer elements is returned in @elements. 3876 * Error to create the hdr is indicated by returning with < 0. 3877 */ 3878 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb, 3879 struct qeth_hdr **hdr, unsigned int hdr_len, 3880 unsigned int proto_len, unsigned int *elements) 3881 { 3882 const unsigned int max_elements = QETH_MAX_BUFFER_ELEMENTS(card); 3883 const unsigned int contiguous = proto_len ? proto_len : 1; 3884 unsigned int __elements; 3885 addr_t start, end; 3886 bool push_ok; 3887 int rc; 3888 3889 check_layout: 3890 start = (addr_t)skb->data - hdr_len; 3891 end = (addr_t)skb->data; 3892 3893 if (qeth_get_elements_for_range(start, end + contiguous) == 1) { 3894 /* Push HW header into same page as first protocol header. */ 3895 push_ok = true; 3896 __elements = qeth_count_elements(skb, 0); 3897 } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) { 3898 /* Push HW header into a new page. */ 3899 push_ok = true; 3900 __elements = 1 + qeth_count_elements(skb, 0); 3901 } else { 3902 /* Use header cache, copy protocol headers up. */ 3903 push_ok = false; 3904 __elements = 1 + qeth_count_elements(skb, proto_len); 3905 } 3906 3907 /* Compress skb to fit into one IO buffer: */ 3908 if (__elements > max_elements) { 3909 if (!skb_is_nonlinear(skb)) { 3910 /* Drop it, no easy way of shrinking it further. */ 3911 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n", 3912 max_elements, __elements, skb->len); 3913 return -E2BIG; 3914 } 3915 3916 rc = skb_linearize(skb); 3917 if (card->options.performance_stats) { 3918 if (rc) 3919 card->perf_stats.tx_linfail++; 3920 else 3921 card->perf_stats.tx_lin++; 3922 } 3923 if (rc) 3924 return rc; 3925 3926 /* Linearization changed the layout, re-evaluate: */ 3927 goto check_layout; 3928 } 3929 3930 *elements = __elements; 3931 /* Add the header: */ 3932 if (push_ok) { 3933 *hdr = skb_push(skb, hdr_len); 3934 return hdr_len; 3935 } 3936 /* fall back */ 3937 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3938 if (!*hdr) 3939 return -ENOMEM; 3940 /* Copy protocol headers behind HW header: */ 3941 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len); 3942 return 0; 3943 } 3944 EXPORT_SYMBOL_GPL(qeth_add_hw_header); 3945 3946 static void __qeth_fill_buffer(struct sk_buff *skb, 3947 struct qeth_qdio_out_buffer *buf, 3948 bool is_first_elem, unsigned int offset) 3949 { 3950 struct qdio_buffer *buffer = buf->buffer; 3951 int element = buf->next_element_to_fill; 3952 int length = skb_headlen(skb) - offset; 3953 char *data = skb->data + offset; 3954 int length_here, cnt; 3955 3956 /* map linear part into buffer element(s) */ 3957 while (length > 0) { 3958 /* length_here is the remaining amount of data in this page */ 3959 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3960 if (length < length_here) 3961 length_here = length; 3962 3963 buffer->element[element].addr = data; 3964 buffer->element[element].length = length_here; 3965 length -= length_here; 3966 if (is_first_elem) { 3967 is_first_elem = false; 3968 if (length || skb_is_nonlinear(skb)) 3969 /* skb needs additional elements */ 3970 buffer->element[element].eflags = 3971 SBAL_EFLAGS_FIRST_FRAG; 3972 else 3973 buffer->element[element].eflags = 0; 3974 } else { 3975 buffer->element[element].eflags = 3976 SBAL_EFLAGS_MIDDLE_FRAG; 3977 } 3978 data += length_here; 3979 element++; 3980 } 3981 3982 /* map page frags into buffer element(s) */ 3983 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3984 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3985 3986 data = skb_frag_address(frag); 3987 length = skb_frag_size(frag); 3988 while (length > 0) { 3989 length_here = PAGE_SIZE - 3990 ((unsigned long) data % PAGE_SIZE); 3991 if (length < length_here) 3992 length_here = length; 3993 3994 buffer->element[element].addr = data; 3995 buffer->element[element].length = length_here; 3996 buffer->element[element].eflags = 3997 SBAL_EFLAGS_MIDDLE_FRAG; 3998 length -= length_here; 3999 data += length_here; 4000 element++; 4001 } 4002 } 4003 4004 if (buffer->element[element - 1].eflags) 4005 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 4006 buf->next_element_to_fill = element; 4007 } 4008 4009 /** 4010 * qeth_fill_buffer() - map skb into an output buffer 4011 * @queue: QDIO queue to submit the buffer on 4012 * @buf: buffer to transport the skb 4013 * @skb: skb to map into the buffer 4014 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 4015 * from qeth_core_header_cache. 4016 * @offset: when mapping the skb, start at skb->data + offset 4017 * @hd_len: if > 0, build a dedicated header element of this size 4018 */ 4019 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 4020 struct qeth_qdio_out_buffer *buf, 4021 struct sk_buff *skb, struct qeth_hdr *hdr, 4022 unsigned int offset, unsigned int hd_len) 4023 { 4024 struct qdio_buffer *buffer = buf->buffer; 4025 bool is_first_elem = true; 4026 int flush_cnt = 0; 4027 4028 refcount_inc(&skb->users); 4029 skb_queue_tail(&buf->skb_list, skb); 4030 4031 /* build dedicated header element */ 4032 if (hd_len) { 4033 int element = buf->next_element_to_fill; 4034 is_first_elem = false; 4035 4036 buffer->element[element].addr = hdr; 4037 buffer->element[element].length = hd_len; 4038 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4039 /* remember to free cache-allocated qeth_hdr: */ 4040 buf->is_header[element] = ((void *)hdr != skb->data); 4041 buf->next_element_to_fill++; 4042 } 4043 4044 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 4045 4046 if (!queue->do_pack) { 4047 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4048 /* set state to PRIMED -> will be flushed */ 4049 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4050 flush_cnt = 1; 4051 } else { 4052 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4053 if (queue->card->options.performance_stats) 4054 queue->card->perf_stats.skbs_sent_pack++; 4055 if (buf->next_element_to_fill >= 4056 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4057 /* 4058 * packed buffer if full -> set state PRIMED 4059 * -> will be flushed 4060 */ 4061 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4062 flush_cnt = 1; 4063 } 4064 } 4065 return flush_cnt; 4066 } 4067 4068 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4069 struct qeth_hdr *hdr, unsigned int offset, 4070 unsigned int hd_len) 4071 { 4072 int index = queue->next_buf_to_fill; 4073 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 4074 4075 /* 4076 * check if buffer is empty to make sure that we do not 'overtake' 4077 * ourselves and try to fill a buffer that is already primed 4078 */ 4079 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4080 return -EBUSY; 4081 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 4082 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4083 qeth_flush_buffers(queue, index, 1); 4084 return 0; 4085 } 4086 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4087 4088 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4089 struct sk_buff *skb, struct qeth_hdr *hdr, 4090 unsigned int offset, unsigned int hd_len, 4091 int elements_needed) 4092 { 4093 struct qeth_qdio_out_buffer *buffer; 4094 int start_index; 4095 int flush_count = 0; 4096 int do_pack = 0; 4097 int tmp; 4098 int rc = 0; 4099 4100 /* spin until we get the queue ... */ 4101 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4102 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4103 start_index = queue->next_buf_to_fill; 4104 buffer = queue->bufs[queue->next_buf_to_fill]; 4105 /* 4106 * check if buffer is empty to make sure that we do not 'overtake' 4107 * ourselves and try to fill a buffer that is already primed 4108 */ 4109 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4110 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4111 return -EBUSY; 4112 } 4113 /* check if we need to switch packing state of this queue */ 4114 qeth_switch_to_packing_if_needed(queue); 4115 if (queue->do_pack) { 4116 do_pack = 1; 4117 /* does packet fit in current buffer? */ 4118 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4119 buffer->next_element_to_fill) < elements_needed) { 4120 /* ... no -> set state PRIMED */ 4121 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4122 flush_count++; 4123 queue->next_buf_to_fill = 4124 (queue->next_buf_to_fill + 1) % 4125 QDIO_MAX_BUFFERS_PER_Q; 4126 buffer = queue->bufs[queue->next_buf_to_fill]; 4127 /* we did a step forward, so check buffer state 4128 * again */ 4129 if (atomic_read(&buffer->state) != 4130 QETH_QDIO_BUF_EMPTY) { 4131 qeth_flush_buffers(queue, start_index, 4132 flush_count); 4133 atomic_set(&queue->state, 4134 QETH_OUT_Q_UNLOCKED); 4135 rc = -EBUSY; 4136 goto out; 4137 } 4138 } 4139 } 4140 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4141 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4142 QDIO_MAX_BUFFERS_PER_Q; 4143 flush_count += tmp; 4144 if (flush_count) 4145 qeth_flush_buffers(queue, start_index, flush_count); 4146 else if (!atomic_read(&queue->set_pci_flags_count)) 4147 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4148 /* 4149 * queue->state will go from LOCKED -> UNLOCKED or from 4150 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4151 * (switch packing state or flush buffer to get another pci flag out). 4152 * In that case we will enter this loop 4153 */ 4154 while (atomic_dec_return(&queue->state)) { 4155 start_index = queue->next_buf_to_fill; 4156 /* check if we can go back to non-packing state */ 4157 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4158 /* 4159 * check if we need to flush a packing buffer to get a pci 4160 * flag out on the queue 4161 */ 4162 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4163 tmp = qeth_prep_flush_pack_buffer(queue); 4164 if (tmp) { 4165 qeth_flush_buffers(queue, start_index, tmp); 4166 flush_count += tmp; 4167 } 4168 } 4169 out: 4170 /* at this point the queue is UNLOCKED again */ 4171 if (queue->card->options.performance_stats && do_pack) 4172 queue->card->perf_stats.bufs_sent_pack += flush_count; 4173 4174 return rc; 4175 } 4176 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4177 4178 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4179 struct qeth_reply *reply, unsigned long data) 4180 { 4181 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4182 struct qeth_ipacmd_setadpparms *setparms; 4183 4184 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4185 4186 setparms = &(cmd->data.setadapterparms); 4187 if (qeth_setadpparms_inspect_rc(cmd)) { 4188 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4189 setparms->data.mode = SET_PROMISC_MODE_OFF; 4190 } 4191 card->info.promisc_mode = setparms->data.mode; 4192 return 0; 4193 } 4194 4195 void qeth_setadp_promisc_mode(struct qeth_card *card) 4196 { 4197 enum qeth_ipa_promisc_modes mode; 4198 struct net_device *dev = card->dev; 4199 struct qeth_cmd_buffer *iob; 4200 struct qeth_ipa_cmd *cmd; 4201 4202 QETH_CARD_TEXT(card, 4, "setprom"); 4203 4204 if (((dev->flags & IFF_PROMISC) && 4205 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4206 (!(dev->flags & IFF_PROMISC) && 4207 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4208 return; 4209 mode = SET_PROMISC_MODE_OFF; 4210 if (dev->flags & IFF_PROMISC) 4211 mode = SET_PROMISC_MODE_ON; 4212 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4213 4214 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4215 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4216 if (!iob) 4217 return; 4218 cmd = __ipa_cmd(iob); 4219 cmd->data.setadapterparms.data.mode = mode; 4220 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4221 } 4222 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4223 4224 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4225 { 4226 struct qeth_card *card; 4227 4228 card = dev->ml_priv; 4229 4230 QETH_CARD_TEXT(card, 5, "getstat"); 4231 4232 return &card->stats; 4233 } 4234 EXPORT_SYMBOL_GPL(qeth_get_stats); 4235 4236 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4237 struct qeth_reply *reply, unsigned long data) 4238 { 4239 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4240 4241 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4242 if (qeth_setadpparms_inspect_rc(cmd)) 4243 return 0; 4244 4245 if (!card->options.layer2 || 4246 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4247 ether_addr_copy(card->dev->dev_addr, 4248 cmd->data.setadapterparms.data.change_addr.addr); 4249 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4250 } 4251 return 0; 4252 } 4253 4254 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4255 { 4256 int rc; 4257 struct qeth_cmd_buffer *iob; 4258 struct qeth_ipa_cmd *cmd; 4259 4260 QETH_CARD_TEXT(card, 4, "chgmac"); 4261 4262 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4263 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4264 sizeof(struct qeth_change_addr)); 4265 if (!iob) 4266 return -ENOMEM; 4267 cmd = __ipa_cmd(iob); 4268 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4269 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4270 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4271 card->dev->dev_addr); 4272 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4273 NULL); 4274 return rc; 4275 } 4276 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4277 4278 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4279 struct qeth_reply *reply, unsigned long data) 4280 { 4281 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4282 struct qeth_set_access_ctrl *access_ctrl_req; 4283 int fallback = *(int *)reply->param; 4284 4285 QETH_CARD_TEXT(card, 4, "setaccb"); 4286 if (cmd->hdr.return_code) 4287 return 0; 4288 qeth_setadpparms_inspect_rc(cmd); 4289 4290 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4291 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4292 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4293 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4294 cmd->data.setadapterparms.hdr.return_code); 4295 if (cmd->data.setadapterparms.hdr.return_code != 4296 SET_ACCESS_CTRL_RC_SUCCESS) 4297 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4298 card->gdev->dev.kobj.name, 4299 access_ctrl_req->subcmd_code, 4300 cmd->data.setadapterparms.hdr.return_code); 4301 switch (cmd->data.setadapterparms.hdr.return_code) { 4302 case SET_ACCESS_CTRL_RC_SUCCESS: 4303 if (card->options.isolation == ISOLATION_MODE_NONE) { 4304 dev_info(&card->gdev->dev, 4305 "QDIO data connection isolation is deactivated\n"); 4306 } else { 4307 dev_info(&card->gdev->dev, 4308 "QDIO data connection isolation is activated\n"); 4309 } 4310 break; 4311 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4312 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4313 "deactivated\n", dev_name(&card->gdev->dev)); 4314 if (fallback) 4315 card->options.isolation = card->options.prev_isolation; 4316 break; 4317 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4318 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4319 " activated\n", dev_name(&card->gdev->dev)); 4320 if (fallback) 4321 card->options.isolation = card->options.prev_isolation; 4322 break; 4323 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4324 dev_err(&card->gdev->dev, "Adapter does not " 4325 "support QDIO data connection isolation\n"); 4326 break; 4327 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4328 dev_err(&card->gdev->dev, 4329 "Adapter is dedicated. " 4330 "QDIO data connection isolation not supported\n"); 4331 if (fallback) 4332 card->options.isolation = card->options.prev_isolation; 4333 break; 4334 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4335 dev_err(&card->gdev->dev, 4336 "TSO does not permit QDIO data connection isolation\n"); 4337 if (fallback) 4338 card->options.isolation = card->options.prev_isolation; 4339 break; 4340 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4341 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4342 "support reflective relay mode\n"); 4343 if (fallback) 4344 card->options.isolation = card->options.prev_isolation; 4345 break; 4346 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4347 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4348 "enabled at the adjacent switch port"); 4349 if (fallback) 4350 card->options.isolation = card->options.prev_isolation; 4351 break; 4352 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4353 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4354 "at the adjacent switch failed\n"); 4355 break; 4356 default: 4357 /* this should never happen */ 4358 if (fallback) 4359 card->options.isolation = card->options.prev_isolation; 4360 break; 4361 } 4362 return 0; 4363 } 4364 4365 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4366 enum qeth_ipa_isolation_modes isolation, int fallback) 4367 { 4368 int rc; 4369 struct qeth_cmd_buffer *iob; 4370 struct qeth_ipa_cmd *cmd; 4371 struct qeth_set_access_ctrl *access_ctrl_req; 4372 4373 QETH_CARD_TEXT(card, 4, "setacctl"); 4374 4375 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4376 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4377 4378 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4379 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4380 sizeof(struct qeth_set_access_ctrl)); 4381 if (!iob) 4382 return -ENOMEM; 4383 cmd = __ipa_cmd(iob); 4384 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4385 access_ctrl_req->subcmd_code = isolation; 4386 4387 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4388 &fallback); 4389 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4390 return rc; 4391 } 4392 4393 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4394 { 4395 int rc = 0; 4396 4397 QETH_CARD_TEXT(card, 4, "setactlo"); 4398 4399 if ((card->info.type == QETH_CARD_TYPE_OSD || 4400 card->info.type == QETH_CARD_TYPE_OSX) && 4401 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4402 rc = qeth_setadpparms_set_access_ctrl(card, 4403 card->options.isolation, fallback); 4404 if (rc) { 4405 QETH_DBF_MESSAGE(3, 4406 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4407 card->gdev->dev.kobj.name, 4408 rc); 4409 rc = -EOPNOTSUPP; 4410 } 4411 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4412 card->options.isolation = ISOLATION_MODE_NONE; 4413 4414 dev_err(&card->gdev->dev, "Adapter does not " 4415 "support QDIO data connection isolation\n"); 4416 rc = -EOPNOTSUPP; 4417 } 4418 return rc; 4419 } 4420 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4421 4422 void qeth_tx_timeout(struct net_device *dev) 4423 { 4424 struct qeth_card *card; 4425 4426 card = dev->ml_priv; 4427 QETH_CARD_TEXT(card, 4, "txtimeo"); 4428 card->stats.tx_errors++; 4429 qeth_schedule_recovery(card); 4430 } 4431 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4432 4433 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4434 { 4435 struct qeth_card *card = dev->ml_priv; 4436 int rc = 0; 4437 4438 switch (regnum) { 4439 case MII_BMCR: /* Basic mode control register */ 4440 rc = BMCR_FULLDPLX; 4441 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4442 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4443 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4444 rc |= BMCR_SPEED100; 4445 break; 4446 case MII_BMSR: /* Basic mode status register */ 4447 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4448 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4449 BMSR_100BASE4; 4450 break; 4451 case MII_PHYSID1: /* PHYS ID 1 */ 4452 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4453 dev->dev_addr[2]; 4454 rc = (rc >> 5) & 0xFFFF; 4455 break; 4456 case MII_PHYSID2: /* PHYS ID 2 */ 4457 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4458 break; 4459 case MII_ADVERTISE: /* Advertisement control reg */ 4460 rc = ADVERTISE_ALL; 4461 break; 4462 case MII_LPA: /* Link partner ability reg */ 4463 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4464 LPA_100BASE4 | LPA_LPACK; 4465 break; 4466 case MII_EXPANSION: /* Expansion register */ 4467 break; 4468 case MII_DCOUNTER: /* disconnect counter */ 4469 break; 4470 case MII_FCSCOUNTER: /* false carrier counter */ 4471 break; 4472 case MII_NWAYTEST: /* N-way auto-neg test register */ 4473 break; 4474 case MII_RERRCOUNTER: /* rx error counter */ 4475 rc = card->stats.rx_errors; 4476 break; 4477 case MII_SREVISION: /* silicon revision */ 4478 break; 4479 case MII_RESV1: /* reserved 1 */ 4480 break; 4481 case MII_LBRERROR: /* loopback, rx, bypass error */ 4482 break; 4483 case MII_PHYADDR: /* physical address */ 4484 break; 4485 case MII_RESV2: /* reserved 2 */ 4486 break; 4487 case MII_TPISTATUS: /* TPI status for 10mbps */ 4488 break; 4489 case MII_NCONFIG: /* network interface config */ 4490 break; 4491 default: 4492 break; 4493 } 4494 return rc; 4495 } 4496 4497 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4498 struct qeth_cmd_buffer *iob, int len, 4499 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4500 unsigned long), 4501 void *reply_param) 4502 { 4503 u16 s1, s2; 4504 4505 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4506 4507 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4508 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4509 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4510 /* adjust PDU length fields in IPA_PDU_HEADER */ 4511 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4512 s2 = (u32) len; 4513 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4514 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4515 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4516 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4517 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4518 reply_cb, reply_param); 4519 } 4520 4521 static int qeth_snmp_command_cb(struct qeth_card *card, 4522 struct qeth_reply *reply, unsigned long sdata) 4523 { 4524 struct qeth_ipa_cmd *cmd; 4525 struct qeth_arp_query_info *qinfo; 4526 struct qeth_snmp_cmd *snmp; 4527 unsigned char *data; 4528 __u16 data_len; 4529 4530 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4531 4532 cmd = (struct qeth_ipa_cmd *) sdata; 4533 data = (unsigned char *)((char *)cmd - reply->offset); 4534 qinfo = (struct qeth_arp_query_info *) reply->param; 4535 snmp = &cmd->data.setadapterparms.data.snmp; 4536 4537 if (cmd->hdr.return_code) { 4538 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4539 return 0; 4540 } 4541 if (cmd->data.setadapterparms.hdr.return_code) { 4542 cmd->hdr.return_code = 4543 cmd->data.setadapterparms.hdr.return_code; 4544 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4545 return 0; 4546 } 4547 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4548 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4549 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4550 else 4551 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4552 4553 /* check if there is enough room in userspace */ 4554 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4555 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4556 cmd->hdr.return_code = IPA_RC_ENOMEM; 4557 return 0; 4558 } 4559 QETH_CARD_TEXT_(card, 4, "snore%i", 4560 cmd->data.setadapterparms.hdr.used_total); 4561 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4562 cmd->data.setadapterparms.hdr.seq_no); 4563 /*copy entries to user buffer*/ 4564 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4565 memcpy(qinfo->udata + qinfo->udata_offset, 4566 (char *)snmp, 4567 data_len + offsetof(struct qeth_snmp_cmd, data)); 4568 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4569 } else { 4570 memcpy(qinfo->udata + qinfo->udata_offset, 4571 (char *)&snmp->request, data_len); 4572 } 4573 qinfo->udata_offset += data_len; 4574 /* check if all replies received ... */ 4575 QETH_CARD_TEXT_(card, 4, "srtot%i", 4576 cmd->data.setadapterparms.hdr.used_total); 4577 QETH_CARD_TEXT_(card, 4, "srseq%i", 4578 cmd->data.setadapterparms.hdr.seq_no); 4579 if (cmd->data.setadapterparms.hdr.seq_no < 4580 cmd->data.setadapterparms.hdr.used_total) 4581 return 1; 4582 return 0; 4583 } 4584 4585 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4586 { 4587 struct qeth_cmd_buffer *iob; 4588 struct qeth_ipa_cmd *cmd; 4589 struct qeth_snmp_ureq *ureq; 4590 unsigned int req_len; 4591 struct qeth_arp_query_info qinfo = {0, }; 4592 int rc = 0; 4593 4594 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4595 4596 if (card->info.guestlan) 4597 return -EOPNOTSUPP; 4598 4599 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4600 (!card->options.layer2)) { 4601 return -EOPNOTSUPP; 4602 } 4603 /* skip 4 bytes (data_len struct member) to get req_len */ 4604 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4605 return -EFAULT; 4606 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4607 sizeof(struct qeth_ipacmd_hdr) - 4608 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4609 return -EINVAL; 4610 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4611 if (IS_ERR(ureq)) { 4612 QETH_CARD_TEXT(card, 2, "snmpnome"); 4613 return PTR_ERR(ureq); 4614 } 4615 qinfo.udata_len = ureq->hdr.data_len; 4616 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4617 if (!qinfo.udata) { 4618 kfree(ureq); 4619 return -ENOMEM; 4620 } 4621 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4622 4623 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4624 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4625 if (!iob) { 4626 rc = -ENOMEM; 4627 goto out; 4628 } 4629 cmd = __ipa_cmd(iob); 4630 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4631 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4632 qeth_snmp_command_cb, (void *)&qinfo); 4633 if (rc) 4634 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4635 QETH_CARD_IFNAME(card), rc); 4636 else { 4637 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4638 rc = -EFAULT; 4639 } 4640 out: 4641 kfree(ureq); 4642 kfree(qinfo.udata); 4643 return rc; 4644 } 4645 4646 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4647 struct qeth_reply *reply, unsigned long data) 4648 { 4649 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4650 struct qeth_qoat_priv *priv; 4651 char *resdata; 4652 int resdatalen; 4653 4654 QETH_CARD_TEXT(card, 3, "qoatcb"); 4655 if (qeth_setadpparms_inspect_rc(cmd)) 4656 return 0; 4657 4658 priv = (struct qeth_qoat_priv *)reply->param; 4659 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4660 resdata = (char *)data + 28; 4661 4662 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4663 cmd->hdr.return_code = IPA_RC_FFFF; 4664 return 0; 4665 } 4666 4667 memcpy((priv->buffer + priv->response_len), resdata, 4668 resdatalen); 4669 priv->response_len += resdatalen; 4670 4671 if (cmd->data.setadapterparms.hdr.seq_no < 4672 cmd->data.setadapterparms.hdr.used_total) 4673 return 1; 4674 return 0; 4675 } 4676 4677 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4678 { 4679 int rc = 0; 4680 struct qeth_cmd_buffer *iob; 4681 struct qeth_ipa_cmd *cmd; 4682 struct qeth_query_oat *oat_req; 4683 struct qeth_query_oat_data oat_data; 4684 struct qeth_qoat_priv priv; 4685 void __user *tmp; 4686 4687 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4688 4689 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4690 rc = -EOPNOTSUPP; 4691 goto out; 4692 } 4693 4694 if (copy_from_user(&oat_data, udata, 4695 sizeof(struct qeth_query_oat_data))) { 4696 rc = -EFAULT; 4697 goto out; 4698 } 4699 4700 priv.buffer_len = oat_data.buffer_len; 4701 priv.response_len = 0; 4702 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4703 if (!priv.buffer) { 4704 rc = -ENOMEM; 4705 goto out; 4706 } 4707 4708 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4709 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4710 sizeof(struct qeth_query_oat)); 4711 if (!iob) { 4712 rc = -ENOMEM; 4713 goto out_free; 4714 } 4715 cmd = __ipa_cmd(iob); 4716 oat_req = &cmd->data.setadapterparms.data.query_oat; 4717 oat_req->subcmd_code = oat_data.command; 4718 4719 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4720 &priv); 4721 if (!rc) { 4722 if (is_compat_task()) 4723 tmp = compat_ptr(oat_data.ptr); 4724 else 4725 tmp = (void __user *)(unsigned long)oat_data.ptr; 4726 4727 if (copy_to_user(tmp, priv.buffer, 4728 priv.response_len)) { 4729 rc = -EFAULT; 4730 goto out_free; 4731 } 4732 4733 oat_data.response_len = priv.response_len; 4734 4735 if (copy_to_user(udata, &oat_data, 4736 sizeof(struct qeth_query_oat_data))) 4737 rc = -EFAULT; 4738 } else 4739 if (rc == IPA_RC_FFFF) 4740 rc = -EFAULT; 4741 4742 out_free: 4743 kfree(priv.buffer); 4744 out: 4745 return rc; 4746 } 4747 4748 static int qeth_query_card_info_cb(struct qeth_card *card, 4749 struct qeth_reply *reply, unsigned long data) 4750 { 4751 struct carrier_info *carrier_info = (struct carrier_info *)reply->param; 4752 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4753 struct qeth_query_card_info *card_info; 4754 4755 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4756 if (qeth_setadpparms_inspect_rc(cmd)) 4757 return 0; 4758 4759 card_info = &cmd->data.setadapterparms.data.card_info; 4760 carrier_info->card_type = card_info->card_type; 4761 carrier_info->port_mode = card_info->port_mode; 4762 carrier_info->port_speed = card_info->port_speed; 4763 return 0; 4764 } 4765 4766 static int qeth_query_card_info(struct qeth_card *card, 4767 struct carrier_info *carrier_info) 4768 { 4769 struct qeth_cmd_buffer *iob; 4770 4771 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4772 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4773 return -EOPNOTSUPP; 4774 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4775 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4776 if (!iob) 4777 return -ENOMEM; 4778 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4779 (void *)carrier_info); 4780 } 4781 4782 /** 4783 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4784 * @card: pointer to a qeth_card 4785 * 4786 * Returns 4787 * 0, if a MAC address has been set for the card's netdevice 4788 * a return code, for various error conditions 4789 */ 4790 int qeth_vm_request_mac(struct qeth_card *card) 4791 { 4792 struct diag26c_mac_resp *response; 4793 struct diag26c_mac_req *request; 4794 struct ccw_dev_id id; 4795 int rc; 4796 4797 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4798 4799 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4800 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4801 if (!request || !response) { 4802 rc = -ENOMEM; 4803 goto out; 4804 } 4805 4806 ccw_device_get_id(CARD_DDEV(card), &id); 4807 request->resp_buf_len = sizeof(*response); 4808 request->resp_version = DIAG26C_VERSION2; 4809 request->op_code = DIAG26C_GET_MAC; 4810 request->devno = id.devno; 4811 4812 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4813 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4814 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4815 if (rc) 4816 goto out; 4817 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4818 4819 if (request->resp_buf_len < sizeof(*response) || 4820 response->version != request->resp_version) { 4821 rc = -EIO; 4822 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4823 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4824 sizeof(request->resp_buf_len)); 4825 } else if (!is_valid_ether_addr(response->mac)) { 4826 rc = -EINVAL; 4827 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4828 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4829 } else { 4830 ether_addr_copy(card->dev->dev_addr, response->mac); 4831 } 4832 4833 out: 4834 kfree(response); 4835 kfree(request); 4836 return rc; 4837 } 4838 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4839 4840 static int qeth_get_qdio_q_format(struct qeth_card *card) 4841 { 4842 if (card->info.type == QETH_CARD_TYPE_IQD) 4843 return QDIO_IQDIO_QFMT; 4844 else 4845 return QDIO_QETH_QFMT; 4846 } 4847 4848 static void qeth_determine_capabilities(struct qeth_card *card) 4849 { 4850 int rc; 4851 int length; 4852 char *prcd; 4853 struct ccw_device *ddev; 4854 int ddev_offline = 0; 4855 4856 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4857 ddev = CARD_DDEV(card); 4858 if (!ddev->online) { 4859 ddev_offline = 1; 4860 rc = ccw_device_set_online(ddev); 4861 if (rc) { 4862 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4863 goto out; 4864 } 4865 } 4866 4867 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4868 if (rc) { 4869 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4870 dev_name(&card->gdev->dev), rc); 4871 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4872 goto out_offline; 4873 } 4874 qeth_configure_unitaddr(card, prcd); 4875 if (ddev_offline) 4876 qeth_configure_blkt_default(card, prcd); 4877 kfree(prcd); 4878 4879 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4880 if (rc) 4881 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4882 4883 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4884 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4885 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4886 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4887 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4888 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4889 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4890 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4891 dev_info(&card->gdev->dev, 4892 "Completion Queueing supported\n"); 4893 } else { 4894 card->options.cq = QETH_CQ_NOTAVAILABLE; 4895 } 4896 4897 4898 out_offline: 4899 if (ddev_offline == 1) 4900 ccw_device_set_offline(ddev); 4901 out: 4902 return; 4903 } 4904 4905 static void qeth_qdio_establish_cq(struct qeth_card *card, 4906 struct qdio_buffer **in_sbal_ptrs, 4907 void (**queue_start_poll) 4908 (struct ccw_device *, int, 4909 unsigned long)) 4910 { 4911 int i; 4912 4913 if (card->options.cq == QETH_CQ_ENABLED) { 4914 int offset = QDIO_MAX_BUFFERS_PER_Q * 4915 (card->qdio.no_in_queues - 1); 4916 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4917 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4918 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4919 } 4920 4921 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4922 } 4923 } 4924 4925 static int qeth_qdio_establish(struct qeth_card *card) 4926 { 4927 struct qdio_initialize init_data; 4928 char *qib_param_field; 4929 struct qdio_buffer **in_sbal_ptrs; 4930 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4931 struct qdio_buffer **out_sbal_ptrs; 4932 int i, j, k; 4933 int rc = 0; 4934 4935 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4936 4937 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q, 4938 GFP_KERNEL); 4939 if (!qib_param_field) { 4940 rc = -ENOMEM; 4941 goto out_free_nothing; 4942 } 4943 4944 qeth_create_qib_param_field(card, qib_param_field); 4945 qeth_create_qib_param_field_blkt(card, qib_param_field); 4946 4947 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q, 4948 sizeof(void *), 4949 GFP_KERNEL); 4950 if (!in_sbal_ptrs) { 4951 rc = -ENOMEM; 4952 goto out_free_qib_param; 4953 } 4954 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4955 in_sbal_ptrs[i] = (struct qdio_buffer *) 4956 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4957 } 4958 4959 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), 4960 GFP_KERNEL); 4961 if (!queue_start_poll) { 4962 rc = -ENOMEM; 4963 goto out_free_in_sbals; 4964 } 4965 for (i = 0; i < card->qdio.no_in_queues; ++i) 4966 queue_start_poll[i] = qeth_qdio_start_poll; 4967 4968 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4969 4970 out_sbal_ptrs = 4971 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q, 4972 sizeof(void *), 4973 GFP_KERNEL); 4974 if (!out_sbal_ptrs) { 4975 rc = -ENOMEM; 4976 goto out_free_queue_start_poll; 4977 } 4978 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4979 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4980 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4981 card->qdio.out_qs[i]->bufs[j]->buffer); 4982 } 4983 4984 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4985 init_data.cdev = CARD_DDEV(card); 4986 init_data.q_format = qeth_get_qdio_q_format(card); 4987 init_data.qib_param_field_format = 0; 4988 init_data.qib_param_field = qib_param_field; 4989 init_data.no_input_qs = card->qdio.no_in_queues; 4990 init_data.no_output_qs = card->qdio.no_out_queues; 4991 init_data.input_handler = qeth_qdio_input_handler; 4992 init_data.output_handler = qeth_qdio_output_handler; 4993 init_data.queue_start_poll_array = queue_start_poll; 4994 init_data.int_parm = (unsigned long) card; 4995 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4996 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4997 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4998 init_data.scan_threshold = 4999 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 5000 5001 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 5002 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 5003 rc = qdio_allocate(&init_data); 5004 if (rc) { 5005 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5006 goto out; 5007 } 5008 rc = qdio_establish(&init_data); 5009 if (rc) { 5010 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5011 qdio_free(CARD_DDEV(card)); 5012 } 5013 } 5014 5015 switch (card->options.cq) { 5016 case QETH_CQ_ENABLED: 5017 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5018 break; 5019 case QETH_CQ_DISABLED: 5020 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5021 break; 5022 default: 5023 break; 5024 } 5025 out: 5026 kfree(out_sbal_ptrs); 5027 out_free_queue_start_poll: 5028 kfree(queue_start_poll); 5029 out_free_in_sbals: 5030 kfree(in_sbal_ptrs); 5031 out_free_qib_param: 5032 kfree(qib_param_field); 5033 out_free_nothing: 5034 return rc; 5035 } 5036 5037 static void qeth_core_free_card(struct qeth_card *card) 5038 { 5039 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5040 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5041 qeth_clean_channel(&card->read); 5042 qeth_clean_channel(&card->write); 5043 qeth_clean_channel(&card->data); 5044 qeth_free_qdio_buffers(card); 5045 unregister_service_level(&card->qeth_service_level); 5046 kfree(card); 5047 } 5048 5049 void qeth_trace_features(struct qeth_card *card) 5050 { 5051 QETH_CARD_TEXT(card, 2, "features"); 5052 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5053 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5054 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5055 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5056 sizeof(card->info.diagass_support)); 5057 } 5058 EXPORT_SYMBOL_GPL(qeth_trace_features); 5059 5060 static struct ccw_device_id qeth_ids[] = { 5061 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5062 .driver_info = QETH_CARD_TYPE_OSD}, 5063 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5064 .driver_info = QETH_CARD_TYPE_IQD}, 5065 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5066 .driver_info = QETH_CARD_TYPE_OSN}, 5067 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5068 .driver_info = QETH_CARD_TYPE_OSM}, 5069 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5070 .driver_info = QETH_CARD_TYPE_OSX}, 5071 {}, 5072 }; 5073 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5074 5075 static struct ccw_driver qeth_ccw_driver = { 5076 .driver = { 5077 .owner = THIS_MODULE, 5078 .name = "qeth", 5079 }, 5080 .ids = qeth_ids, 5081 .probe = ccwgroup_probe_ccwdev, 5082 .remove = ccwgroup_remove_ccwdev, 5083 }; 5084 5085 int qeth_core_hardsetup_card(struct qeth_card *card) 5086 { 5087 int retries = 3; 5088 int rc; 5089 5090 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5091 atomic_set(&card->force_alloc_skb, 0); 5092 qeth_update_from_chp_desc(card); 5093 retry: 5094 if (retries < 3) 5095 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5096 dev_name(&card->gdev->dev)); 5097 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5098 ccw_device_set_offline(CARD_DDEV(card)); 5099 ccw_device_set_offline(CARD_WDEV(card)); 5100 ccw_device_set_offline(CARD_RDEV(card)); 5101 qdio_free(CARD_DDEV(card)); 5102 rc = ccw_device_set_online(CARD_RDEV(card)); 5103 if (rc) 5104 goto retriable; 5105 rc = ccw_device_set_online(CARD_WDEV(card)); 5106 if (rc) 5107 goto retriable; 5108 rc = ccw_device_set_online(CARD_DDEV(card)); 5109 if (rc) 5110 goto retriable; 5111 retriable: 5112 if (rc == -ERESTARTSYS) { 5113 QETH_DBF_TEXT(SETUP, 2, "break1"); 5114 return rc; 5115 } else if (rc) { 5116 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5117 if (--retries < 0) 5118 goto out; 5119 else 5120 goto retry; 5121 } 5122 qeth_determine_capabilities(card); 5123 qeth_init_tokens(card); 5124 qeth_init_func_level(card); 5125 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5126 if (rc == -ERESTARTSYS) { 5127 QETH_DBF_TEXT(SETUP, 2, "break2"); 5128 return rc; 5129 } else if (rc) { 5130 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5131 if (--retries < 0) 5132 goto out; 5133 else 5134 goto retry; 5135 } 5136 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5137 if (rc == -ERESTARTSYS) { 5138 QETH_DBF_TEXT(SETUP, 2, "break3"); 5139 return rc; 5140 } else if (rc) { 5141 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5142 if (--retries < 0) 5143 goto out; 5144 else 5145 goto retry; 5146 } 5147 card->read_or_write_problem = 0; 5148 rc = qeth_mpc_initialize(card); 5149 if (rc) { 5150 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5151 goto out; 5152 } 5153 5154 rc = qeth_send_startlan(card); 5155 if (rc) { 5156 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5157 if (rc == IPA_RC_LAN_OFFLINE) { 5158 dev_warn(&card->gdev->dev, 5159 "The LAN is offline\n"); 5160 card->lan_online = 0; 5161 } else { 5162 rc = -ENODEV; 5163 goto out; 5164 } 5165 } else 5166 card->lan_online = 1; 5167 5168 card->options.ipa4.supported_funcs = 0; 5169 card->options.ipa6.supported_funcs = 0; 5170 card->options.adp.supported_funcs = 0; 5171 card->options.sbp.supported_funcs = 0; 5172 card->info.diagass_support = 0; 5173 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5174 if (rc == -ENOMEM) 5175 goto out; 5176 if (qeth_is_supported(card, IPA_IPV6)) { 5177 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 5178 if (rc == -ENOMEM) 5179 goto out; 5180 } 5181 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5182 rc = qeth_query_setadapterparms(card); 5183 if (rc < 0) { 5184 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5185 goto out; 5186 } 5187 } 5188 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5189 rc = qeth_query_setdiagass(card); 5190 if (rc < 0) { 5191 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5192 goto out; 5193 } 5194 } 5195 return 0; 5196 out: 5197 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5198 "an error on the device\n"); 5199 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5200 dev_name(&card->gdev->dev), rc); 5201 return rc; 5202 } 5203 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5204 5205 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5206 struct sk_buff *skb, int offset, int data_len) 5207 { 5208 struct page *page = virt_to_page(element->addr); 5209 unsigned int next_frag; 5210 5211 /* first fill the linear space */ 5212 if (!skb->len) { 5213 unsigned int linear = min(data_len, skb_tailroom(skb)); 5214 5215 skb_put_data(skb, element->addr + offset, linear); 5216 data_len -= linear; 5217 if (!data_len) 5218 return; 5219 offset += linear; 5220 /* fall through to add page frag for remaining data */ 5221 } 5222 5223 next_frag = skb_shinfo(skb)->nr_frags; 5224 get_page(page); 5225 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5226 } 5227 5228 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5229 { 5230 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5231 } 5232 5233 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5234 struct qeth_qdio_buffer *qethbuffer, 5235 struct qdio_buffer_element **__element, int *__offset, 5236 struct qeth_hdr **hdr) 5237 { 5238 struct qdio_buffer_element *element = *__element; 5239 struct qdio_buffer *buffer = qethbuffer->buffer; 5240 int offset = *__offset; 5241 struct sk_buff *skb; 5242 int skb_len = 0; 5243 void *data_ptr; 5244 int data_len; 5245 int headroom = 0; 5246 int use_rx_sg = 0; 5247 5248 /* qeth_hdr must not cross element boundaries */ 5249 while (element->length < offset + sizeof(struct qeth_hdr)) { 5250 if (qeth_is_last_sbale(element)) 5251 return NULL; 5252 element++; 5253 offset = 0; 5254 } 5255 *hdr = element->addr + offset; 5256 5257 offset += sizeof(struct qeth_hdr); 5258 switch ((*hdr)->hdr.l2.id) { 5259 case QETH_HEADER_TYPE_LAYER2: 5260 skb_len = (*hdr)->hdr.l2.pkt_length; 5261 break; 5262 case QETH_HEADER_TYPE_LAYER3: 5263 skb_len = (*hdr)->hdr.l3.length; 5264 headroom = ETH_HLEN; 5265 break; 5266 case QETH_HEADER_TYPE_OSN: 5267 skb_len = (*hdr)->hdr.osn.pdu_length; 5268 headroom = sizeof(struct qeth_hdr); 5269 break; 5270 default: 5271 break; 5272 } 5273 5274 if (!skb_len) 5275 return NULL; 5276 5277 if (((skb_len >= card->options.rx_sg_cb) && 5278 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5279 (!atomic_read(&card->force_alloc_skb))) || 5280 (card->options.cq == QETH_CQ_ENABLED)) 5281 use_rx_sg = 1; 5282 5283 if (use_rx_sg && qethbuffer->rx_skb) { 5284 /* QETH_CQ_ENABLED only: */ 5285 skb = qethbuffer->rx_skb; 5286 qethbuffer->rx_skb = NULL; 5287 } else { 5288 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5289 5290 skb = napi_alloc_skb(&card->napi, linear + headroom); 5291 } 5292 if (!skb) 5293 goto no_mem; 5294 if (headroom) 5295 skb_reserve(skb, headroom); 5296 5297 data_ptr = element->addr + offset; 5298 while (skb_len) { 5299 data_len = min(skb_len, (int)(element->length - offset)); 5300 if (data_len) { 5301 if (use_rx_sg) 5302 qeth_create_skb_frag(element, skb, offset, 5303 data_len); 5304 else 5305 skb_put_data(skb, data_ptr, data_len); 5306 } 5307 skb_len -= data_len; 5308 if (skb_len) { 5309 if (qeth_is_last_sbale(element)) { 5310 QETH_CARD_TEXT(card, 4, "unexeob"); 5311 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5312 dev_kfree_skb_any(skb); 5313 card->stats.rx_errors++; 5314 return NULL; 5315 } 5316 element++; 5317 offset = 0; 5318 data_ptr = element->addr; 5319 } else { 5320 offset += data_len; 5321 } 5322 } 5323 *__element = element; 5324 *__offset = offset; 5325 if (use_rx_sg && card->options.performance_stats) { 5326 card->perf_stats.sg_skbs_rx++; 5327 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5328 } 5329 return skb; 5330 no_mem: 5331 if (net_ratelimit()) { 5332 QETH_CARD_TEXT(card, 2, "noskbmem"); 5333 } 5334 card->stats.rx_dropped++; 5335 return NULL; 5336 } 5337 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5338 5339 int qeth_poll(struct napi_struct *napi, int budget) 5340 { 5341 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5342 int work_done = 0; 5343 struct qeth_qdio_buffer *buffer; 5344 int done; 5345 int new_budget = budget; 5346 5347 if (card->options.performance_stats) { 5348 card->perf_stats.inbound_cnt++; 5349 card->perf_stats.inbound_start_time = qeth_get_micros(); 5350 } 5351 5352 while (1) { 5353 if (!card->rx.b_count) { 5354 card->rx.qdio_err = 0; 5355 card->rx.b_count = qdio_get_next_buffers( 5356 card->data.ccwdev, 0, &card->rx.b_index, 5357 &card->rx.qdio_err); 5358 if (card->rx.b_count <= 0) { 5359 card->rx.b_count = 0; 5360 break; 5361 } 5362 card->rx.b_element = 5363 &card->qdio.in_q->bufs[card->rx.b_index] 5364 .buffer->element[0]; 5365 card->rx.e_offset = 0; 5366 } 5367 5368 while (card->rx.b_count) { 5369 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5370 if (!(card->rx.qdio_err && 5371 qeth_check_qdio_errors(card, buffer->buffer, 5372 card->rx.qdio_err, "qinerr"))) 5373 work_done += 5374 card->discipline->process_rx_buffer( 5375 card, new_budget, &done); 5376 else 5377 done = 1; 5378 5379 if (done) { 5380 if (card->options.performance_stats) 5381 card->perf_stats.bufs_rec++; 5382 qeth_put_buffer_pool_entry(card, 5383 buffer->pool_entry); 5384 qeth_queue_input_buffer(card, card->rx.b_index); 5385 card->rx.b_count--; 5386 if (card->rx.b_count) { 5387 card->rx.b_index = 5388 (card->rx.b_index + 1) % 5389 QDIO_MAX_BUFFERS_PER_Q; 5390 card->rx.b_element = 5391 &card->qdio.in_q 5392 ->bufs[card->rx.b_index] 5393 .buffer->element[0]; 5394 card->rx.e_offset = 0; 5395 } 5396 } 5397 5398 if (work_done >= budget) 5399 goto out; 5400 else 5401 new_budget = budget - work_done; 5402 } 5403 } 5404 5405 napi_complete_done(napi, work_done); 5406 if (qdio_start_irq(card->data.ccwdev, 0)) 5407 napi_schedule(&card->napi); 5408 out: 5409 if (card->options.performance_stats) 5410 card->perf_stats.inbound_time += qeth_get_micros() - 5411 card->perf_stats.inbound_start_time; 5412 return work_done; 5413 } 5414 EXPORT_SYMBOL_GPL(qeth_poll); 5415 5416 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5417 { 5418 if (!cmd->hdr.return_code) 5419 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5420 return cmd->hdr.return_code; 5421 } 5422 5423 int qeth_setassparms_cb(struct qeth_card *card, 5424 struct qeth_reply *reply, unsigned long data) 5425 { 5426 struct qeth_ipa_cmd *cmd; 5427 5428 QETH_CARD_TEXT(card, 4, "defadpcb"); 5429 5430 cmd = (struct qeth_ipa_cmd *) data; 5431 if (cmd->hdr.return_code == 0) { 5432 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5433 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5434 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5435 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5436 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5437 } 5438 return 0; 5439 } 5440 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5441 5442 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5443 enum qeth_ipa_funcs ipa_func, 5444 __u16 cmd_code, __u16 len, 5445 enum qeth_prot_versions prot) 5446 { 5447 struct qeth_cmd_buffer *iob; 5448 struct qeth_ipa_cmd *cmd; 5449 5450 QETH_CARD_TEXT(card, 4, "getasscm"); 5451 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5452 5453 if (iob) { 5454 cmd = __ipa_cmd(iob); 5455 cmd->data.setassparms.hdr.assist_no = ipa_func; 5456 cmd->data.setassparms.hdr.length = 8 + len; 5457 cmd->data.setassparms.hdr.command_code = cmd_code; 5458 cmd->data.setassparms.hdr.return_code = 0; 5459 cmd->data.setassparms.hdr.seq_no = 0; 5460 } 5461 5462 return iob; 5463 } 5464 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5465 5466 int qeth_send_setassparms(struct qeth_card *card, 5467 struct qeth_cmd_buffer *iob, __u16 len, long data, 5468 int (*reply_cb)(struct qeth_card *, 5469 struct qeth_reply *, unsigned long), 5470 void *reply_param) 5471 { 5472 int rc; 5473 struct qeth_ipa_cmd *cmd; 5474 5475 QETH_CARD_TEXT(card, 4, "sendassp"); 5476 5477 cmd = __ipa_cmd(iob); 5478 if (len <= sizeof(__u32)) 5479 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5480 else /* (len > sizeof(__u32)) */ 5481 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5482 5483 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5484 return rc; 5485 } 5486 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5487 5488 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 5489 enum qeth_ipa_funcs ipa_func, 5490 u16 cmd_code, long data, 5491 enum qeth_prot_versions prot) 5492 { 5493 int rc; 5494 int length = 0; 5495 struct qeth_cmd_buffer *iob; 5496 5497 QETH_CARD_TEXT_(card, 4, "simassp%i", prot); 5498 if (data) 5499 length = sizeof(__u32); 5500 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); 5501 if (!iob) 5502 return -ENOMEM; 5503 rc = qeth_send_setassparms(card, iob, length, data, 5504 qeth_setassparms_cb, NULL); 5505 return rc; 5506 } 5507 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 5508 5509 static void qeth_unregister_dbf_views(void) 5510 { 5511 int x; 5512 for (x = 0; x < QETH_DBF_INFOS; x++) { 5513 debug_unregister(qeth_dbf[x].id); 5514 qeth_dbf[x].id = NULL; 5515 } 5516 } 5517 5518 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5519 { 5520 char dbf_txt_buf[32]; 5521 va_list args; 5522 5523 if (!debug_level_enabled(id, level)) 5524 return; 5525 va_start(args, fmt); 5526 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5527 va_end(args); 5528 debug_text_event(id, level, dbf_txt_buf); 5529 } 5530 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5531 5532 static int qeth_register_dbf_views(void) 5533 { 5534 int ret; 5535 int x; 5536 5537 for (x = 0; x < QETH_DBF_INFOS; x++) { 5538 /* register the areas */ 5539 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5540 qeth_dbf[x].pages, 5541 qeth_dbf[x].areas, 5542 qeth_dbf[x].len); 5543 if (qeth_dbf[x].id == NULL) { 5544 qeth_unregister_dbf_views(); 5545 return -ENOMEM; 5546 } 5547 5548 /* register a view */ 5549 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5550 if (ret) { 5551 qeth_unregister_dbf_views(); 5552 return ret; 5553 } 5554 5555 /* set a passing level */ 5556 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5557 } 5558 5559 return 0; 5560 } 5561 5562 int qeth_core_load_discipline(struct qeth_card *card, 5563 enum qeth_discipline_id discipline) 5564 { 5565 int rc = 0; 5566 5567 mutex_lock(&qeth_mod_mutex); 5568 switch (discipline) { 5569 case QETH_DISCIPLINE_LAYER3: 5570 card->discipline = try_then_request_module( 5571 symbol_get(qeth_l3_discipline), "qeth_l3"); 5572 break; 5573 case QETH_DISCIPLINE_LAYER2: 5574 card->discipline = try_then_request_module( 5575 symbol_get(qeth_l2_discipline), "qeth_l2"); 5576 break; 5577 default: 5578 break; 5579 } 5580 5581 if (!card->discipline) { 5582 dev_err(&card->gdev->dev, "There is no kernel module to " 5583 "support discipline %d\n", discipline); 5584 rc = -EINVAL; 5585 } 5586 mutex_unlock(&qeth_mod_mutex); 5587 return rc; 5588 } 5589 5590 void qeth_core_free_discipline(struct qeth_card *card) 5591 { 5592 if (card->options.layer2) 5593 symbol_put(qeth_l2_discipline); 5594 else 5595 symbol_put(qeth_l3_discipline); 5596 card->discipline = NULL; 5597 } 5598 5599 const struct device_type qeth_generic_devtype = { 5600 .name = "qeth_generic", 5601 .groups = qeth_generic_attr_groups, 5602 }; 5603 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5604 5605 static const struct device_type qeth_osn_devtype = { 5606 .name = "qeth_osn", 5607 .groups = qeth_osn_attr_groups, 5608 }; 5609 5610 #define DBF_NAME_LEN 20 5611 5612 struct qeth_dbf_entry { 5613 char dbf_name[DBF_NAME_LEN]; 5614 debug_info_t *dbf_info; 5615 struct list_head dbf_list; 5616 }; 5617 5618 static LIST_HEAD(qeth_dbf_list); 5619 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5620 5621 static debug_info_t *qeth_get_dbf_entry(char *name) 5622 { 5623 struct qeth_dbf_entry *entry; 5624 debug_info_t *rc = NULL; 5625 5626 mutex_lock(&qeth_dbf_list_mutex); 5627 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5628 if (strcmp(entry->dbf_name, name) == 0) { 5629 rc = entry->dbf_info; 5630 break; 5631 } 5632 } 5633 mutex_unlock(&qeth_dbf_list_mutex); 5634 return rc; 5635 } 5636 5637 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5638 { 5639 struct qeth_dbf_entry *new_entry; 5640 5641 card->debug = debug_register(name, 2, 1, 8); 5642 if (!card->debug) { 5643 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5644 goto err; 5645 } 5646 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5647 goto err_dbg; 5648 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5649 if (!new_entry) 5650 goto err_dbg; 5651 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5652 new_entry->dbf_info = card->debug; 5653 mutex_lock(&qeth_dbf_list_mutex); 5654 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5655 mutex_unlock(&qeth_dbf_list_mutex); 5656 5657 return 0; 5658 5659 err_dbg: 5660 debug_unregister(card->debug); 5661 err: 5662 return -ENOMEM; 5663 } 5664 5665 static void qeth_clear_dbf_list(void) 5666 { 5667 struct qeth_dbf_entry *entry, *tmp; 5668 5669 mutex_lock(&qeth_dbf_list_mutex); 5670 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5671 list_del(&entry->dbf_list); 5672 debug_unregister(entry->dbf_info); 5673 kfree(entry); 5674 } 5675 mutex_unlock(&qeth_dbf_list_mutex); 5676 } 5677 5678 static struct net_device *qeth_alloc_netdev(struct qeth_card *card) 5679 { 5680 struct net_device *dev; 5681 5682 switch (card->info.type) { 5683 case QETH_CARD_TYPE_IQD: 5684 dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup); 5685 break; 5686 case QETH_CARD_TYPE_OSN: 5687 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); 5688 break; 5689 default: 5690 dev = alloc_etherdev(0); 5691 } 5692 5693 if (!dev) 5694 return NULL; 5695 5696 dev->ml_priv = card; 5697 dev->watchdog_timeo = QETH_TX_TIMEOUT; 5698 dev->min_mtu = IS_OSN(card) ? 64 : 576; 5699 /* initialized when device first goes online: */ 5700 dev->max_mtu = 0; 5701 dev->mtu = 0; 5702 SET_NETDEV_DEV(dev, &card->gdev->dev); 5703 netif_carrier_off(dev); 5704 5705 if (!IS_OSN(card)) { 5706 dev->priv_flags &= ~IFF_TX_SKB_SHARING; 5707 dev->hw_features |= NETIF_F_SG; 5708 dev->vlan_features |= NETIF_F_SG; 5709 } 5710 5711 return dev; 5712 } 5713 5714 struct net_device *qeth_clone_netdev(struct net_device *orig) 5715 { 5716 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv); 5717 5718 if (!clone) 5719 return NULL; 5720 5721 clone->dev_port = orig->dev_port; 5722 return clone; 5723 } 5724 5725 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5726 { 5727 struct qeth_card *card; 5728 struct device *dev; 5729 int rc; 5730 enum qeth_discipline_id enforced_disc; 5731 unsigned long flags; 5732 char dbf_name[DBF_NAME_LEN]; 5733 5734 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5735 5736 dev = &gdev->dev; 5737 if (!get_device(dev)) 5738 return -ENODEV; 5739 5740 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5741 5742 card = qeth_alloc_card(); 5743 if (!card) { 5744 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5745 rc = -ENOMEM; 5746 goto err_dev; 5747 } 5748 5749 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5750 dev_name(&gdev->dev)); 5751 card->debug = qeth_get_dbf_entry(dbf_name); 5752 if (!card->debug) { 5753 rc = qeth_add_dbf_entry(card, dbf_name); 5754 if (rc) 5755 goto err_card; 5756 } 5757 5758 card->read.ccwdev = gdev->cdev[0]; 5759 card->write.ccwdev = gdev->cdev[1]; 5760 card->data.ccwdev = gdev->cdev[2]; 5761 dev_set_drvdata(&gdev->dev, card); 5762 card->gdev = gdev; 5763 gdev->cdev[0]->handler = qeth_irq; 5764 gdev->cdev[1]->handler = qeth_irq; 5765 gdev->cdev[2]->handler = qeth_irq; 5766 5767 qeth_setup_card(card); 5768 qeth_update_from_chp_desc(card); 5769 5770 card->dev = qeth_alloc_netdev(card); 5771 if (!card->dev) 5772 goto err_card; 5773 5774 qeth_determine_capabilities(card); 5775 enforced_disc = qeth_enforce_discipline(card); 5776 switch (enforced_disc) { 5777 case QETH_DISCIPLINE_UNDETERMINED: 5778 gdev->dev.type = &qeth_generic_devtype; 5779 break; 5780 default: 5781 card->info.layer_enforced = true; 5782 rc = qeth_core_load_discipline(card, enforced_disc); 5783 if (rc) 5784 goto err_load; 5785 5786 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5787 ? card->discipline->devtype 5788 : &qeth_osn_devtype; 5789 rc = card->discipline->setup(card->gdev); 5790 if (rc) 5791 goto err_disc; 5792 break; 5793 } 5794 5795 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5796 list_add_tail(&card->list, &qeth_core_card_list.list); 5797 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5798 return 0; 5799 5800 err_disc: 5801 qeth_core_free_discipline(card); 5802 err_load: 5803 free_netdev(card->dev); 5804 err_card: 5805 qeth_core_free_card(card); 5806 err_dev: 5807 put_device(dev); 5808 return rc; 5809 } 5810 5811 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5812 { 5813 unsigned long flags; 5814 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5815 5816 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5817 5818 if (card->discipline) { 5819 card->discipline->remove(gdev); 5820 qeth_core_free_discipline(card); 5821 } 5822 5823 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5824 list_del(&card->list); 5825 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5826 free_netdev(card->dev); 5827 qeth_core_free_card(card); 5828 dev_set_drvdata(&gdev->dev, NULL); 5829 put_device(&gdev->dev); 5830 } 5831 5832 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5833 { 5834 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5835 int rc = 0; 5836 enum qeth_discipline_id def_discipline; 5837 5838 if (!card->discipline) { 5839 if (card->info.type == QETH_CARD_TYPE_IQD) 5840 def_discipline = QETH_DISCIPLINE_LAYER3; 5841 else 5842 def_discipline = QETH_DISCIPLINE_LAYER2; 5843 rc = qeth_core_load_discipline(card, def_discipline); 5844 if (rc) 5845 goto err; 5846 rc = card->discipline->setup(card->gdev); 5847 if (rc) { 5848 qeth_core_free_discipline(card); 5849 goto err; 5850 } 5851 } 5852 rc = card->discipline->set_online(gdev); 5853 err: 5854 return rc; 5855 } 5856 5857 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5858 { 5859 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5860 return card->discipline->set_offline(gdev); 5861 } 5862 5863 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5864 { 5865 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5866 qeth_set_allowed_threads(card, 0, 1); 5867 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5868 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5869 qeth_qdio_clear_card(card, 0); 5870 qeth_clear_qdio_buffers(card); 5871 qdio_free(CARD_DDEV(card)); 5872 } 5873 5874 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5875 { 5876 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5877 if (card->discipline && card->discipline->freeze) 5878 return card->discipline->freeze(gdev); 5879 return 0; 5880 } 5881 5882 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5883 { 5884 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5885 if (card->discipline && card->discipline->thaw) 5886 return card->discipline->thaw(gdev); 5887 return 0; 5888 } 5889 5890 static int qeth_core_restore(struct ccwgroup_device *gdev) 5891 { 5892 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5893 if (card->discipline && card->discipline->restore) 5894 return card->discipline->restore(gdev); 5895 return 0; 5896 } 5897 5898 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5899 size_t count) 5900 { 5901 int err; 5902 5903 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3, 5904 buf); 5905 5906 return err ? err : count; 5907 } 5908 static DRIVER_ATTR_WO(group); 5909 5910 static struct attribute *qeth_drv_attrs[] = { 5911 &driver_attr_group.attr, 5912 NULL, 5913 }; 5914 static struct attribute_group qeth_drv_attr_group = { 5915 .attrs = qeth_drv_attrs, 5916 }; 5917 static const struct attribute_group *qeth_drv_attr_groups[] = { 5918 &qeth_drv_attr_group, 5919 NULL, 5920 }; 5921 5922 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5923 .driver = { 5924 .groups = qeth_drv_attr_groups, 5925 .owner = THIS_MODULE, 5926 .name = "qeth", 5927 }, 5928 .ccw_driver = &qeth_ccw_driver, 5929 .setup = qeth_core_probe_device, 5930 .remove = qeth_core_remove_device, 5931 .set_online = qeth_core_set_online, 5932 .set_offline = qeth_core_set_offline, 5933 .shutdown = qeth_core_shutdown, 5934 .prepare = NULL, 5935 .complete = NULL, 5936 .freeze = qeth_core_freeze, 5937 .thaw = qeth_core_thaw, 5938 .restore = qeth_core_restore, 5939 }; 5940 5941 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5942 { 5943 struct qeth_card *card = dev->ml_priv; 5944 struct mii_ioctl_data *mii_data; 5945 int rc = 0; 5946 5947 if (!card) 5948 return -ENODEV; 5949 5950 if (!qeth_card_hw_is_reachable(card)) 5951 return -ENODEV; 5952 5953 if (card->info.type == QETH_CARD_TYPE_OSN) 5954 return -EPERM; 5955 5956 switch (cmd) { 5957 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5958 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5959 break; 5960 case SIOC_QETH_GET_CARD_TYPE: 5961 if ((card->info.type == QETH_CARD_TYPE_OSD || 5962 card->info.type == QETH_CARD_TYPE_OSM || 5963 card->info.type == QETH_CARD_TYPE_OSX) && 5964 !card->info.guestlan) 5965 return 1; 5966 else 5967 return 0; 5968 case SIOCGMIIPHY: 5969 mii_data = if_mii(rq); 5970 mii_data->phy_id = 0; 5971 break; 5972 case SIOCGMIIREG: 5973 mii_data = if_mii(rq); 5974 if (mii_data->phy_id != 0) 5975 rc = -EINVAL; 5976 else 5977 mii_data->val_out = qeth_mdio_read(dev, 5978 mii_data->phy_id, mii_data->reg_num); 5979 break; 5980 case SIOC_QETH_QUERY_OAT: 5981 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5982 break; 5983 default: 5984 if (card->discipline->do_ioctl) 5985 rc = card->discipline->do_ioctl(dev, rq, cmd); 5986 else 5987 rc = -EOPNOTSUPP; 5988 } 5989 if (rc) 5990 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5991 return rc; 5992 } 5993 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5994 5995 static struct { 5996 const char str[ETH_GSTRING_LEN]; 5997 } qeth_ethtool_stats_keys[] = { 5998 /* 0 */{"rx skbs"}, 5999 {"rx buffers"}, 6000 {"tx skbs"}, 6001 {"tx buffers"}, 6002 {"tx skbs no packing"}, 6003 {"tx buffers no packing"}, 6004 {"tx skbs packing"}, 6005 {"tx buffers packing"}, 6006 {"tx sg skbs"}, 6007 {"tx buffer elements"}, 6008 /* 10 */{"rx sg skbs"}, 6009 {"rx sg frags"}, 6010 {"rx sg page allocs"}, 6011 {"tx large kbytes"}, 6012 {"tx large count"}, 6013 {"tx pk state ch n->p"}, 6014 {"tx pk state ch p->n"}, 6015 {"tx pk watermark low"}, 6016 {"tx pk watermark high"}, 6017 {"queue 0 buffer usage"}, 6018 /* 20 */{"queue 1 buffer usage"}, 6019 {"queue 2 buffer usage"}, 6020 {"queue 3 buffer usage"}, 6021 {"rx poll time"}, 6022 {"rx poll count"}, 6023 {"rx do_QDIO time"}, 6024 {"rx do_QDIO count"}, 6025 {"tx handler time"}, 6026 {"tx handler count"}, 6027 {"tx time"}, 6028 /* 30 */{"tx count"}, 6029 {"tx do_QDIO time"}, 6030 {"tx do_QDIO count"}, 6031 {"tx csum"}, 6032 {"tx lin"}, 6033 {"tx linfail"}, 6034 {"cq handler count"}, 6035 {"cq handler time"}, 6036 {"rx csum"} 6037 }; 6038 6039 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 6040 { 6041 switch (stringset) { 6042 case ETH_SS_STATS: 6043 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 6044 default: 6045 return -EINVAL; 6046 } 6047 } 6048 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 6049 6050 void qeth_core_get_ethtool_stats(struct net_device *dev, 6051 struct ethtool_stats *stats, u64 *data) 6052 { 6053 struct qeth_card *card = dev->ml_priv; 6054 data[0] = card->stats.rx_packets - 6055 card->perf_stats.initial_rx_packets; 6056 data[1] = card->perf_stats.bufs_rec; 6057 data[2] = card->stats.tx_packets - 6058 card->perf_stats.initial_tx_packets; 6059 data[3] = card->perf_stats.bufs_sent; 6060 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 6061 - card->perf_stats.skbs_sent_pack; 6062 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 6063 data[6] = card->perf_stats.skbs_sent_pack; 6064 data[7] = card->perf_stats.bufs_sent_pack; 6065 data[8] = card->perf_stats.sg_skbs_sent; 6066 data[9] = card->perf_stats.buf_elements_sent; 6067 data[10] = card->perf_stats.sg_skbs_rx; 6068 data[11] = card->perf_stats.sg_frags_rx; 6069 data[12] = card->perf_stats.sg_alloc_page_rx; 6070 data[13] = (card->perf_stats.large_send_bytes >> 10); 6071 data[14] = card->perf_stats.large_send_cnt; 6072 data[15] = card->perf_stats.sc_dp_p; 6073 data[16] = card->perf_stats.sc_p_dp; 6074 data[17] = QETH_LOW_WATERMARK_PACK; 6075 data[18] = QETH_HIGH_WATERMARK_PACK; 6076 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 6077 data[20] = (card->qdio.no_out_queues > 1) ? 6078 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 6079 data[21] = (card->qdio.no_out_queues > 2) ? 6080 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6081 data[22] = (card->qdio.no_out_queues > 3) ? 6082 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6083 data[23] = card->perf_stats.inbound_time; 6084 data[24] = card->perf_stats.inbound_cnt; 6085 data[25] = card->perf_stats.inbound_do_qdio_time; 6086 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6087 data[27] = card->perf_stats.outbound_handler_time; 6088 data[28] = card->perf_stats.outbound_handler_cnt; 6089 data[29] = card->perf_stats.outbound_time; 6090 data[30] = card->perf_stats.outbound_cnt; 6091 data[31] = card->perf_stats.outbound_do_qdio_time; 6092 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6093 data[33] = card->perf_stats.tx_csum; 6094 data[34] = card->perf_stats.tx_lin; 6095 data[35] = card->perf_stats.tx_linfail; 6096 data[36] = card->perf_stats.cq_cnt; 6097 data[37] = card->perf_stats.cq_time; 6098 data[38] = card->perf_stats.rx_csum; 6099 } 6100 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6101 6102 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6103 { 6104 switch (stringset) { 6105 case ETH_SS_STATS: 6106 memcpy(data, &qeth_ethtool_stats_keys, 6107 sizeof(qeth_ethtool_stats_keys)); 6108 break; 6109 default: 6110 WARN_ON(1); 6111 break; 6112 } 6113 } 6114 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6115 6116 void qeth_core_get_drvinfo(struct net_device *dev, 6117 struct ethtool_drvinfo *info) 6118 { 6119 struct qeth_card *card = dev->ml_priv; 6120 6121 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6122 sizeof(info->driver)); 6123 strlcpy(info->version, "1.0", sizeof(info->version)); 6124 strlcpy(info->fw_version, card->info.mcl_level, 6125 sizeof(info->fw_version)); 6126 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6127 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6128 } 6129 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6130 6131 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6132 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6133 /* Always advertise and support all speeds up to specified, and only one */ 6134 /* specified port type. */ 6135 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6136 int maxspeed, int porttype) 6137 { 6138 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6139 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6140 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6141 6142 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6143 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6144 6145 switch (porttype) { 6146 case PORT_TP: 6147 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6148 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6149 break; 6150 case PORT_FIBRE: 6151 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6152 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6153 break; 6154 default: 6155 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6156 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6157 WARN_ON_ONCE(1); 6158 } 6159 6160 /* fallthrough from high to low, to select all legal speeds: */ 6161 switch (maxspeed) { 6162 case SPEED_10000: 6163 ethtool_link_ksettings_add_link_mode(cmd, supported, 6164 10000baseT_Full); 6165 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6166 10000baseT_Full); 6167 case SPEED_1000: 6168 ethtool_link_ksettings_add_link_mode(cmd, supported, 6169 1000baseT_Full); 6170 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6171 1000baseT_Full); 6172 ethtool_link_ksettings_add_link_mode(cmd, supported, 6173 1000baseT_Half); 6174 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6175 1000baseT_Half); 6176 case SPEED_100: 6177 ethtool_link_ksettings_add_link_mode(cmd, supported, 6178 100baseT_Full); 6179 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6180 100baseT_Full); 6181 ethtool_link_ksettings_add_link_mode(cmd, supported, 6182 100baseT_Half); 6183 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6184 100baseT_Half); 6185 case SPEED_10: 6186 ethtool_link_ksettings_add_link_mode(cmd, supported, 6187 10baseT_Full); 6188 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6189 10baseT_Full); 6190 ethtool_link_ksettings_add_link_mode(cmd, supported, 6191 10baseT_Half); 6192 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6193 10baseT_Half); 6194 /* end fallthrough */ 6195 break; 6196 default: 6197 ethtool_link_ksettings_add_link_mode(cmd, supported, 6198 10baseT_Full); 6199 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6200 10baseT_Full); 6201 ethtool_link_ksettings_add_link_mode(cmd, supported, 6202 10baseT_Half); 6203 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6204 10baseT_Half); 6205 WARN_ON_ONCE(1); 6206 } 6207 } 6208 6209 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6210 struct ethtool_link_ksettings *cmd) 6211 { 6212 struct qeth_card *card = netdev->ml_priv; 6213 enum qeth_link_types link_type; 6214 struct carrier_info carrier_info; 6215 int rc; 6216 6217 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6218 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6219 else 6220 link_type = card->info.link_type; 6221 6222 cmd->base.duplex = DUPLEX_FULL; 6223 cmd->base.autoneg = AUTONEG_ENABLE; 6224 cmd->base.phy_address = 0; 6225 cmd->base.mdio_support = 0; 6226 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6227 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6228 6229 switch (link_type) { 6230 case QETH_LINK_TYPE_FAST_ETH: 6231 case QETH_LINK_TYPE_LANE_ETH100: 6232 cmd->base.speed = SPEED_100; 6233 cmd->base.port = PORT_TP; 6234 break; 6235 case QETH_LINK_TYPE_GBIT_ETH: 6236 case QETH_LINK_TYPE_LANE_ETH1000: 6237 cmd->base.speed = SPEED_1000; 6238 cmd->base.port = PORT_FIBRE; 6239 break; 6240 case QETH_LINK_TYPE_10GBIT_ETH: 6241 cmd->base.speed = SPEED_10000; 6242 cmd->base.port = PORT_FIBRE; 6243 break; 6244 default: 6245 cmd->base.speed = SPEED_10; 6246 cmd->base.port = PORT_TP; 6247 } 6248 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6249 6250 /* Check if we can obtain more accurate information. */ 6251 /* If QUERY_CARD_INFO command is not supported or fails, */ 6252 /* just return the heuristics that was filled above. */ 6253 if (!qeth_card_hw_is_reachable(card)) 6254 return -ENODEV; 6255 rc = qeth_query_card_info(card, &carrier_info); 6256 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6257 return 0; 6258 if (rc) /* report error from the hardware operation */ 6259 return rc; 6260 /* on success, fill in the information got from the hardware */ 6261 6262 netdev_dbg(netdev, 6263 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6264 carrier_info.card_type, 6265 carrier_info.port_mode, 6266 carrier_info.port_speed); 6267 6268 /* Update attributes for which we've obtained more authoritative */ 6269 /* information, leave the rest the way they where filled above. */ 6270 switch (carrier_info.card_type) { 6271 case CARD_INFO_TYPE_1G_COPPER_A: 6272 case CARD_INFO_TYPE_1G_COPPER_B: 6273 cmd->base.port = PORT_TP; 6274 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6275 break; 6276 case CARD_INFO_TYPE_1G_FIBRE_A: 6277 case CARD_INFO_TYPE_1G_FIBRE_B: 6278 cmd->base.port = PORT_FIBRE; 6279 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6280 break; 6281 case CARD_INFO_TYPE_10G_FIBRE_A: 6282 case CARD_INFO_TYPE_10G_FIBRE_B: 6283 cmd->base.port = PORT_FIBRE; 6284 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6285 break; 6286 } 6287 6288 switch (carrier_info.port_mode) { 6289 case CARD_INFO_PORTM_FULLDUPLEX: 6290 cmd->base.duplex = DUPLEX_FULL; 6291 break; 6292 case CARD_INFO_PORTM_HALFDUPLEX: 6293 cmd->base.duplex = DUPLEX_HALF; 6294 break; 6295 } 6296 6297 switch (carrier_info.port_speed) { 6298 case CARD_INFO_PORTS_10M: 6299 cmd->base.speed = SPEED_10; 6300 break; 6301 case CARD_INFO_PORTS_100M: 6302 cmd->base.speed = SPEED_100; 6303 break; 6304 case CARD_INFO_PORTS_1G: 6305 cmd->base.speed = SPEED_1000; 6306 break; 6307 case CARD_INFO_PORTS_10G: 6308 cmd->base.speed = SPEED_10000; 6309 break; 6310 } 6311 6312 return 0; 6313 } 6314 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6315 6316 /* Callback to handle checksum offload command reply from OSA card. 6317 * Verify that required features have been enabled on the card. 6318 * Return error in hdr->return_code as this value is checked by caller. 6319 * 6320 * Always returns zero to indicate no further messages from the OSA card. 6321 */ 6322 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6323 struct qeth_reply *reply, 6324 unsigned long data) 6325 { 6326 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6327 struct qeth_checksum_cmd *chksum_cb = 6328 (struct qeth_checksum_cmd *)reply->param; 6329 6330 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6331 if (qeth_setassparms_inspect_rc(cmd)) 6332 return 0; 6333 6334 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6335 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6336 chksum_cb->supported = 6337 cmd->data.setassparms.data.chksum.supported; 6338 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6339 } 6340 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6341 chksum_cb->supported = 6342 cmd->data.setassparms.data.chksum.supported; 6343 chksum_cb->enabled = 6344 cmd->data.setassparms.data.chksum.enabled; 6345 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6346 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6347 } 6348 return 0; 6349 } 6350 6351 /* Send command to OSA card and check results. */ 6352 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6353 enum qeth_ipa_funcs ipa_func, 6354 __u16 cmd_code, long data, 6355 struct qeth_checksum_cmd *chksum_cb, 6356 enum qeth_prot_versions prot) 6357 { 6358 struct qeth_cmd_buffer *iob; 6359 int rc = -ENOMEM; 6360 6361 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6362 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6363 sizeof(__u32), prot); 6364 if (iob) 6365 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6366 qeth_ipa_checksum_run_cmd_cb, 6367 chksum_cb); 6368 return rc; 6369 } 6370 6371 static int qeth_send_checksum_on(struct qeth_card *card, int cstype, 6372 enum qeth_prot_versions prot) 6373 { 6374 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; 6375 struct qeth_checksum_cmd chksum_cb; 6376 int rc; 6377 6378 if (prot == QETH_PROT_IPV4) 6379 required_features |= QETH_IPA_CHECKSUM_IP_HDR; 6380 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6381 &chksum_cb, prot); 6382 if (!rc) { 6383 if ((required_features & chksum_cb.supported) != 6384 required_features) 6385 rc = -EIO; 6386 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6387 cstype == IPA_INBOUND_CHECKSUM) 6388 dev_warn(&card->gdev->dev, 6389 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6390 QETH_CARD_IFNAME(card)); 6391 } 6392 if (rc) { 6393 qeth_send_simple_setassparms_prot(card, cstype, 6394 IPA_CMD_ASS_STOP, 0, prot); 6395 dev_warn(&card->gdev->dev, 6396 "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n", 6397 prot, QETH_CARD_IFNAME(card)); 6398 return rc; 6399 } 6400 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6401 chksum_cb.supported, &chksum_cb, 6402 prot); 6403 if (!rc) { 6404 if ((required_features & chksum_cb.enabled) != 6405 required_features) 6406 rc = -EIO; 6407 } 6408 if (rc) { 6409 qeth_send_simple_setassparms_prot(card, cstype, 6410 IPA_CMD_ASS_STOP, 0, prot); 6411 dev_warn(&card->gdev->dev, 6412 "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n", 6413 prot, QETH_CARD_IFNAME(card)); 6414 return rc; 6415 } 6416 6417 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", 6418 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); 6419 return 0; 6420 } 6421 6422 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, 6423 enum qeth_prot_versions prot) 6424 { 6425 int rc = (on) ? qeth_send_checksum_on(card, cstype, prot) 6426 : qeth_send_simple_setassparms_prot(card, cstype, 6427 IPA_CMD_ASS_STOP, 0, 6428 prot); 6429 return rc ? -EIO : 0; 6430 } 6431 6432 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6433 { 6434 int rc; 6435 6436 QETH_CARD_TEXT(card, 3, "sttso"); 6437 6438 if (on) { 6439 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6440 IPA_CMD_ASS_START, 0); 6441 if (rc) { 6442 dev_warn(&card->gdev->dev, 6443 "Starting outbound TCP segmentation offload for %s failed\n", 6444 QETH_CARD_IFNAME(card)); 6445 return -EIO; 6446 } 6447 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6448 } else { 6449 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6450 IPA_CMD_ASS_STOP, 0); 6451 } 6452 return rc; 6453 } 6454 6455 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) 6456 { 6457 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; 6458 int rc_ipv6; 6459 6460 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6461 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6462 QETH_PROT_IPV4); 6463 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6464 /* no/one Offload Assist available, so the rc is trivial */ 6465 return rc_ipv4; 6466 6467 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6468 QETH_PROT_IPV6); 6469 6470 if (on) 6471 /* enable: success if any Assist is active */ 6472 return (rc_ipv6) ? rc_ipv4 : 0; 6473 6474 /* disable: failure if any Assist is still active */ 6475 return (rc_ipv6) ? rc_ipv6 : rc_ipv4; 6476 } 6477 6478 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \ 6479 NETIF_F_IPV6_CSUM) 6480 /** 6481 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features 6482 * @dev: a net_device 6483 */ 6484 void qeth_enable_hw_features(struct net_device *dev) 6485 { 6486 struct qeth_card *card = dev->ml_priv; 6487 netdev_features_t features; 6488 6489 rtnl_lock(); 6490 features = dev->features; 6491 /* force-off any feature that needs an IPA sequence. 6492 * netdev_update_features() will restart them. 6493 */ 6494 dev->features &= ~QETH_HW_FEATURES; 6495 netdev_update_features(dev); 6496 if (features != dev->features) 6497 dev_warn(&card->gdev->dev, 6498 "Device recovery failed to restore all offload features\n"); 6499 rtnl_unlock(); 6500 } 6501 EXPORT_SYMBOL_GPL(qeth_enable_hw_features); 6502 6503 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6504 { 6505 struct qeth_card *card = dev->ml_priv; 6506 netdev_features_t changed = dev->features ^ features; 6507 int rc = 0; 6508 6509 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6510 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6511 6512 if ((changed & NETIF_F_IP_CSUM)) { 6513 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, 6514 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); 6515 if (rc) 6516 changed ^= NETIF_F_IP_CSUM; 6517 } 6518 if (changed & NETIF_F_IPV6_CSUM) { 6519 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, 6520 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); 6521 if (rc) 6522 changed ^= NETIF_F_IPV6_CSUM; 6523 } 6524 if (changed & NETIF_F_RXCSUM) { 6525 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); 6526 if (rc) 6527 changed ^= NETIF_F_RXCSUM; 6528 } 6529 if ((changed & NETIF_F_TSO)) { 6530 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6531 if (rc) 6532 changed ^= NETIF_F_TSO; 6533 } 6534 6535 /* everything changed successfully? */ 6536 if ((dev->features ^ features) == changed) 6537 return 0; 6538 /* something went wrong. save changed features and return error */ 6539 dev->features ^= changed; 6540 return -EIO; 6541 } 6542 EXPORT_SYMBOL_GPL(qeth_set_features); 6543 6544 netdev_features_t qeth_fix_features(struct net_device *dev, 6545 netdev_features_t features) 6546 { 6547 struct qeth_card *card = dev->ml_priv; 6548 6549 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6550 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6551 features &= ~NETIF_F_IP_CSUM; 6552 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) 6553 features &= ~NETIF_F_IPV6_CSUM; 6554 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && 6555 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6556 features &= ~NETIF_F_RXCSUM; 6557 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6558 features &= ~NETIF_F_TSO; 6559 /* if the card isn't up, remove features that require hw changes */ 6560 if (card->state == CARD_STATE_DOWN || 6561 card->state == CARD_STATE_RECOVER) 6562 features &= ~QETH_HW_FEATURES; 6563 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6564 return features; 6565 } 6566 EXPORT_SYMBOL_GPL(qeth_fix_features); 6567 6568 netdev_features_t qeth_features_check(struct sk_buff *skb, 6569 struct net_device *dev, 6570 netdev_features_t features) 6571 { 6572 /* GSO segmentation builds skbs with 6573 * a (small) linear part for the headers, and 6574 * page frags for the data. 6575 * Compared to a linear skb, the header-only part consumes an 6576 * additional buffer element. This reduces buffer utilization, and 6577 * hurts throughput. So compress small segments into one element. 6578 */ 6579 if (netif_needs_gso(skb, features)) { 6580 /* match skb_segment(): */ 6581 unsigned int doffset = skb->data - skb_mac_header(skb); 6582 unsigned int hsize = skb_shinfo(skb)->gso_size; 6583 unsigned int hroom = skb_headroom(skb); 6584 6585 /* linearize only if resulting skb allocations are order-0: */ 6586 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6587 features &= ~NETIF_F_SG; 6588 } 6589 6590 return vlan_features_check(skb, features); 6591 } 6592 EXPORT_SYMBOL_GPL(qeth_features_check); 6593 6594 static int __init qeth_core_init(void) 6595 { 6596 int rc; 6597 6598 pr_info("loading core functions\n"); 6599 INIT_LIST_HEAD(&qeth_core_card_list.list); 6600 INIT_LIST_HEAD(&qeth_dbf_list); 6601 rwlock_init(&qeth_core_card_list.rwlock); 6602 mutex_init(&qeth_mod_mutex); 6603 6604 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6605 if (!qeth_wq) { 6606 rc = -ENOMEM; 6607 goto out_err; 6608 } 6609 6610 rc = qeth_register_dbf_views(); 6611 if (rc) 6612 goto dbf_err; 6613 qeth_core_root_dev = root_device_register("qeth"); 6614 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6615 if (rc) 6616 goto register_err; 6617 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6618 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6619 if (!qeth_core_header_cache) { 6620 rc = -ENOMEM; 6621 goto slab_err; 6622 } 6623 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6624 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6625 if (!qeth_qdio_outbuf_cache) { 6626 rc = -ENOMEM; 6627 goto cqslab_err; 6628 } 6629 rc = ccw_driver_register(&qeth_ccw_driver); 6630 if (rc) 6631 goto ccw_err; 6632 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6633 if (rc) 6634 goto ccwgroup_err; 6635 6636 return 0; 6637 6638 ccwgroup_err: 6639 ccw_driver_unregister(&qeth_ccw_driver); 6640 ccw_err: 6641 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6642 cqslab_err: 6643 kmem_cache_destroy(qeth_core_header_cache); 6644 slab_err: 6645 root_device_unregister(qeth_core_root_dev); 6646 register_err: 6647 qeth_unregister_dbf_views(); 6648 dbf_err: 6649 destroy_workqueue(qeth_wq); 6650 out_err: 6651 pr_err("Initializing the qeth device driver failed\n"); 6652 return rc; 6653 } 6654 6655 static void __exit qeth_core_exit(void) 6656 { 6657 qeth_clear_dbf_list(); 6658 destroy_workqueue(qeth_wq); 6659 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6660 ccw_driver_unregister(&qeth_ccw_driver); 6661 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6662 kmem_cache_destroy(qeth_core_header_cache); 6663 root_device_unregister(qeth_core_root_dev); 6664 qeth_unregister_dbf_views(); 6665 pr_info("core functions removed\n"); 6666 } 6667 6668 module_init(qeth_core_init); 6669 module_exit(qeth_core_exit); 6670 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6671 MODULE_DESCRIPTION("qeth core functions"); 6672 MODULE_LICENSE("GPL"); 6673