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/log2.h> 20 #include <linux/ip.h> 21 #include <linux/tcp.h> 22 #include <linux/mii.h> 23 #include <linux/kthread.h> 24 #include <linux/slab.h> 25 #include <linux/if_vlan.h> 26 #include <linux/netdevice.h> 27 #include <linux/netdev_features.h> 28 #include <linux/skbuff.h> 29 #include <linux/vmalloc.h> 30 31 #include <net/iucv/af_iucv.h> 32 #include <net/dsfield.h> 33 34 #include <asm/ebcdic.h> 35 #include <asm/chpid.h> 36 #include <asm/io.h> 37 #include <asm/sysinfo.h> 38 #include <asm/diag.h> 39 #include <asm/cio.h> 40 #include <asm/ccwdev.h> 41 #include <asm/cpcmd.h> 42 43 #include "qeth_core.h" 44 45 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 46 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 47 /* N P A M L V H */ 48 [QETH_DBF_SETUP] = {"qeth_setup", 49 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 50 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 51 &debug_sprintf_view, NULL}, 52 [QETH_DBF_CTRL] = {"qeth_control", 53 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 54 }; 55 EXPORT_SYMBOL_GPL(qeth_dbf); 56 57 struct qeth_card_list_struct qeth_core_card_list; 58 EXPORT_SYMBOL_GPL(qeth_core_card_list); 59 struct kmem_cache *qeth_core_header_cache; 60 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 61 static struct kmem_cache *qeth_qdio_outbuf_cache; 62 63 static struct device *qeth_core_root_dev; 64 static struct lock_class_key qdio_out_skb_queue_key; 65 66 static void qeth_send_control_data_cb(struct qeth_card *card, 67 struct qeth_channel *channel, 68 struct qeth_cmd_buffer *iob); 69 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 70 static void qeth_free_buffer_pool(struct qeth_card *); 71 static int qeth_qdio_establish(struct qeth_card *); 72 static void qeth_free_qdio_buffers(struct qeth_card *); 73 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 74 struct qeth_qdio_out_buffer *buf, 75 enum iucv_tx_notify notification); 76 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 77 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 78 79 struct workqueue_struct *qeth_wq; 80 EXPORT_SYMBOL_GPL(qeth_wq); 81 82 int qeth_card_hw_is_reachable(struct qeth_card *card) 83 { 84 return (card->state == CARD_STATE_SOFTSETUP) || 85 (card->state == CARD_STATE_UP); 86 } 87 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 88 89 static void qeth_close_dev_handler(struct work_struct *work) 90 { 91 struct qeth_card *card; 92 93 card = container_of(work, struct qeth_card, close_dev_work); 94 QETH_CARD_TEXT(card, 2, "cldevhdl"); 95 rtnl_lock(); 96 dev_close(card->dev); 97 rtnl_unlock(); 98 ccwgroup_set_offline(card->gdev); 99 } 100 101 void qeth_close_dev(struct qeth_card *card) 102 { 103 QETH_CARD_TEXT(card, 2, "cldevsubm"); 104 queue_work(qeth_wq, &card->close_dev_work); 105 } 106 EXPORT_SYMBOL_GPL(qeth_close_dev); 107 108 static const char *qeth_get_cardname(struct qeth_card *card) 109 { 110 if (card->info.guestlan) { 111 switch (card->info.type) { 112 case QETH_CARD_TYPE_OSD: 113 return " Virtual NIC QDIO"; 114 case QETH_CARD_TYPE_IQD: 115 return " Virtual NIC Hiper"; 116 case QETH_CARD_TYPE_OSM: 117 return " Virtual NIC QDIO - OSM"; 118 case QETH_CARD_TYPE_OSX: 119 return " Virtual NIC QDIO - OSX"; 120 default: 121 return " unknown"; 122 } 123 } else { 124 switch (card->info.type) { 125 case QETH_CARD_TYPE_OSD: 126 return " OSD Express"; 127 case QETH_CARD_TYPE_IQD: 128 return " HiperSockets"; 129 case QETH_CARD_TYPE_OSN: 130 return " OSN QDIO"; 131 case QETH_CARD_TYPE_OSM: 132 return " OSM QDIO"; 133 case QETH_CARD_TYPE_OSX: 134 return " OSX QDIO"; 135 default: 136 return " unknown"; 137 } 138 } 139 return " n/a"; 140 } 141 142 /* max length to be returned: 14 */ 143 const char *qeth_get_cardname_short(struct qeth_card *card) 144 { 145 if (card->info.guestlan) { 146 switch (card->info.type) { 147 case QETH_CARD_TYPE_OSD: 148 return "Virt.NIC QDIO"; 149 case QETH_CARD_TYPE_IQD: 150 return "Virt.NIC Hiper"; 151 case QETH_CARD_TYPE_OSM: 152 return "Virt.NIC OSM"; 153 case QETH_CARD_TYPE_OSX: 154 return "Virt.NIC OSX"; 155 default: 156 return "unknown"; 157 } 158 } else { 159 switch (card->info.type) { 160 case QETH_CARD_TYPE_OSD: 161 switch (card->info.link_type) { 162 case QETH_LINK_TYPE_FAST_ETH: 163 return "OSD_100"; 164 case QETH_LINK_TYPE_HSTR: 165 return "HSTR"; 166 case QETH_LINK_TYPE_GBIT_ETH: 167 return "OSD_1000"; 168 case QETH_LINK_TYPE_10GBIT_ETH: 169 return "OSD_10GIG"; 170 case QETH_LINK_TYPE_LANE_ETH100: 171 return "OSD_FE_LANE"; 172 case QETH_LINK_TYPE_LANE_TR: 173 return "OSD_TR_LANE"; 174 case QETH_LINK_TYPE_LANE_ETH1000: 175 return "OSD_GbE_LANE"; 176 case QETH_LINK_TYPE_LANE: 177 return "OSD_ATM_LANE"; 178 default: 179 return "OSD_Express"; 180 } 181 case QETH_CARD_TYPE_IQD: 182 return "HiperSockets"; 183 case QETH_CARD_TYPE_OSN: 184 return "OSN"; 185 case QETH_CARD_TYPE_OSM: 186 return "OSM_1000"; 187 case QETH_CARD_TYPE_OSX: 188 return "OSX_10GIG"; 189 default: 190 return "unknown"; 191 } 192 } 193 return "n/a"; 194 } 195 196 void qeth_set_recovery_task(struct qeth_card *card) 197 { 198 card->recovery_task = current; 199 } 200 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 201 202 void qeth_clear_recovery_task(struct qeth_card *card) 203 { 204 card->recovery_task = NULL; 205 } 206 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 207 208 static bool qeth_is_recovery_task(const struct qeth_card *card) 209 { 210 return card->recovery_task == current; 211 } 212 213 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 214 int clear_start_mask) 215 { 216 unsigned long flags; 217 218 spin_lock_irqsave(&card->thread_mask_lock, flags); 219 card->thread_allowed_mask = threads; 220 if (clear_start_mask) 221 card->thread_start_mask &= threads; 222 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 223 wake_up(&card->wait_q); 224 } 225 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 226 227 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 228 { 229 unsigned long flags; 230 int rc = 0; 231 232 spin_lock_irqsave(&card->thread_mask_lock, flags); 233 rc = (card->thread_running_mask & threads); 234 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 235 return rc; 236 } 237 EXPORT_SYMBOL_GPL(qeth_threads_running); 238 239 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 240 { 241 if (qeth_is_recovery_task(card)) 242 return 0; 243 return wait_event_interruptible(card->wait_q, 244 qeth_threads_running(card, threads) == 0); 245 } 246 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 247 248 void qeth_clear_working_pool_list(struct qeth_card *card) 249 { 250 struct qeth_buffer_pool_entry *pool_entry, *tmp; 251 252 QETH_CARD_TEXT(card, 5, "clwrklst"); 253 list_for_each_entry_safe(pool_entry, tmp, 254 &card->qdio.in_buf_pool.entry_list, list){ 255 list_del(&pool_entry->list); 256 } 257 } 258 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 259 260 static int qeth_alloc_buffer_pool(struct qeth_card *card) 261 { 262 struct qeth_buffer_pool_entry *pool_entry; 263 void *ptr; 264 int i, j; 265 266 QETH_CARD_TEXT(card, 5, "alocpool"); 267 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 268 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 269 if (!pool_entry) { 270 qeth_free_buffer_pool(card); 271 return -ENOMEM; 272 } 273 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 274 ptr = (void *) __get_free_page(GFP_KERNEL); 275 if (!ptr) { 276 while (j > 0) 277 free_page((unsigned long) 278 pool_entry->elements[--j]); 279 kfree(pool_entry); 280 qeth_free_buffer_pool(card); 281 return -ENOMEM; 282 } 283 pool_entry->elements[j] = ptr; 284 } 285 list_add(&pool_entry->init_list, 286 &card->qdio.init_pool.entry_list); 287 } 288 return 0; 289 } 290 291 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 292 { 293 QETH_CARD_TEXT(card, 2, "realcbp"); 294 295 if ((card->state != CARD_STATE_DOWN) && 296 (card->state != CARD_STATE_RECOVER)) 297 return -EPERM; 298 299 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 300 qeth_clear_working_pool_list(card); 301 qeth_free_buffer_pool(card); 302 card->qdio.in_buf_pool.buf_count = bufcnt; 303 card->qdio.init_pool.buf_count = bufcnt; 304 return qeth_alloc_buffer_pool(card); 305 } 306 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 307 308 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 309 { 310 if (!q) 311 return; 312 313 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 314 kfree(q); 315 } 316 317 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 318 { 319 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 320 int i; 321 322 if (!q) 323 return NULL; 324 325 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 326 kfree(q); 327 return NULL; 328 } 329 330 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 331 q->bufs[i].buffer = q->qdio_bufs[i]; 332 333 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 334 return q; 335 } 336 337 static int qeth_cq_init(struct qeth_card *card) 338 { 339 int rc; 340 341 if (card->options.cq == QETH_CQ_ENABLED) { 342 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 343 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 344 QDIO_MAX_BUFFERS_PER_Q); 345 card->qdio.c_q->next_buf_to_init = 127; 346 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 347 card->qdio.no_in_queues - 1, 0, 348 127); 349 if (rc) { 350 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 351 goto out; 352 } 353 } 354 rc = 0; 355 out: 356 return rc; 357 } 358 359 static int qeth_alloc_cq(struct qeth_card *card) 360 { 361 int rc; 362 363 if (card->options.cq == QETH_CQ_ENABLED) { 364 int i; 365 struct qdio_outbuf_state *outbuf_states; 366 367 QETH_DBF_TEXT(SETUP, 2, "cqon"); 368 card->qdio.c_q = qeth_alloc_qdio_queue(); 369 if (!card->qdio.c_q) { 370 rc = -1; 371 goto kmsg_out; 372 } 373 card->qdio.no_in_queues = 2; 374 card->qdio.out_bufstates = 375 kcalloc(card->qdio.no_out_queues * 376 QDIO_MAX_BUFFERS_PER_Q, 377 sizeof(struct qdio_outbuf_state), 378 GFP_KERNEL); 379 outbuf_states = card->qdio.out_bufstates; 380 if (outbuf_states == NULL) { 381 rc = -1; 382 goto free_cq_out; 383 } 384 for (i = 0; i < card->qdio.no_out_queues; ++i) { 385 card->qdio.out_qs[i]->bufstates = outbuf_states; 386 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 387 } 388 } else { 389 QETH_DBF_TEXT(SETUP, 2, "nocq"); 390 card->qdio.c_q = NULL; 391 card->qdio.no_in_queues = 1; 392 } 393 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 394 rc = 0; 395 out: 396 return rc; 397 free_cq_out: 398 qeth_free_qdio_queue(card->qdio.c_q); 399 card->qdio.c_q = NULL; 400 kmsg_out: 401 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 402 goto out; 403 } 404 405 static void qeth_free_cq(struct qeth_card *card) 406 { 407 if (card->qdio.c_q) { 408 --card->qdio.no_in_queues; 409 qeth_free_qdio_queue(card->qdio.c_q); 410 card->qdio.c_q = NULL; 411 } 412 kfree(card->qdio.out_bufstates); 413 card->qdio.out_bufstates = NULL; 414 } 415 416 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 417 int delayed) 418 { 419 enum iucv_tx_notify n; 420 421 switch (sbalf15) { 422 case 0: 423 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 424 break; 425 case 4: 426 case 16: 427 case 17: 428 case 18: 429 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 430 TX_NOTIFY_UNREACHABLE; 431 break; 432 default: 433 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 434 TX_NOTIFY_GENERALERROR; 435 break; 436 } 437 438 return n; 439 } 440 441 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 442 int forced_cleanup) 443 { 444 if (q->card->options.cq != QETH_CQ_ENABLED) 445 return; 446 447 if (q->bufs[bidx]->next_pending != NULL) { 448 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 449 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 450 451 while (c) { 452 if (forced_cleanup || 453 atomic_read(&c->state) == 454 QETH_QDIO_BUF_HANDLED_DELAYED) { 455 struct qeth_qdio_out_buffer *f = c; 456 QETH_CARD_TEXT(f->q->card, 5, "fp"); 457 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 458 /* release here to avoid interleaving between 459 outbound tasklet and inbound tasklet 460 regarding notifications and lifecycle */ 461 qeth_release_skbs(c); 462 463 c = f->next_pending; 464 WARN_ON_ONCE(head->next_pending != f); 465 head->next_pending = c; 466 kmem_cache_free(qeth_qdio_outbuf_cache, f); 467 } else { 468 head = c; 469 c = c->next_pending; 470 } 471 472 } 473 } 474 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 475 QETH_QDIO_BUF_HANDLED_DELAYED)) { 476 /* for recovery situations */ 477 qeth_init_qdio_out_buf(q, bidx); 478 QETH_CARD_TEXT(q->card, 2, "clprecov"); 479 } 480 } 481 482 483 static void qeth_qdio_handle_aob(struct qeth_card *card, 484 unsigned long phys_aob_addr) 485 { 486 struct qaob *aob; 487 struct qeth_qdio_out_buffer *buffer; 488 enum iucv_tx_notify notification; 489 unsigned int i; 490 491 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 492 QETH_CARD_TEXT(card, 5, "haob"); 493 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 494 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 495 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 496 497 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 498 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 499 notification = TX_NOTIFY_OK; 500 } else { 501 WARN_ON_ONCE(atomic_read(&buffer->state) != 502 QETH_QDIO_BUF_PENDING); 503 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 504 notification = TX_NOTIFY_DELAYED_OK; 505 } 506 507 if (aob->aorc != 0) { 508 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 509 notification = qeth_compute_cq_notification(aob->aorc, 1); 510 } 511 qeth_notify_skbs(buffer->q, buffer, notification); 512 513 /* Free dangling allocations. The attached skbs are handled by 514 * qeth_cleanup_handled_pending(). 515 */ 516 for (i = 0; 517 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card); 518 i++) { 519 if (aob->sba[i] && buffer->is_header[i]) 520 kmem_cache_free(qeth_core_header_cache, 521 (void *) aob->sba[i]); 522 } 523 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED); 524 525 qdio_release_aob(aob); 526 } 527 528 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 529 { 530 return card->options.cq == QETH_CQ_ENABLED && 531 card->qdio.c_q != NULL && 532 queue != 0 && 533 queue == card->qdio.no_in_queues - 1; 534 } 535 536 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data) 537 { 538 ccw->cmd_code = cmd_code; 539 ccw->flags = CCW_FLAG_SLI; 540 ccw->count = len; 541 ccw->cda = (__u32) __pa(data); 542 } 543 544 static int __qeth_issue_next_read(struct qeth_card *card) 545 { 546 struct qeth_channel *channel = &card->read; 547 struct qeth_cmd_buffer *iob; 548 int rc; 549 550 QETH_CARD_TEXT(card, 5, "issnxrd"); 551 if (channel->state != CH_STATE_UP) 552 return -EIO; 553 iob = qeth_get_buffer(channel); 554 if (!iob) { 555 dev_warn(&card->gdev->dev, "The qeth device driver " 556 "failed to recover an error on the device\n"); 557 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 558 "available\n", dev_name(&card->gdev->dev)); 559 return -ENOMEM; 560 } 561 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data); 562 QETH_CARD_TEXT(card, 6, "noirqpnd"); 563 rc = ccw_device_start(channel->ccwdev, channel->ccw, 564 (addr_t) iob, 0, 0); 565 if (rc) { 566 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 567 "rc=%i\n", dev_name(&card->gdev->dev), rc); 568 atomic_set(&channel->irq_pending, 0); 569 card->read_or_write_problem = 1; 570 qeth_schedule_recovery(card); 571 wake_up(&card->wait_q); 572 } 573 return rc; 574 } 575 576 static int qeth_issue_next_read(struct qeth_card *card) 577 { 578 int ret; 579 580 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 581 ret = __qeth_issue_next_read(card); 582 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 583 584 return ret; 585 } 586 587 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 588 { 589 struct qeth_reply *reply; 590 591 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 592 if (reply) { 593 refcount_set(&reply->refcnt, 1); 594 atomic_set(&reply->received, 0); 595 } 596 return reply; 597 } 598 599 static void qeth_get_reply(struct qeth_reply *reply) 600 { 601 refcount_inc(&reply->refcnt); 602 } 603 604 static void qeth_put_reply(struct qeth_reply *reply) 605 { 606 if (refcount_dec_and_test(&reply->refcnt)) 607 kfree(reply); 608 } 609 610 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 611 struct qeth_card *card) 612 { 613 const char *ipa_name; 614 int com = cmd->hdr.command; 615 ipa_name = qeth_get_ipa_cmd_name(com); 616 if (rc) 617 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 618 "x%X \"%s\"\n", 619 ipa_name, com, dev_name(&card->gdev->dev), 620 QETH_CARD_IFNAME(card), rc, 621 qeth_get_ipa_msg(rc)); 622 else 623 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 624 ipa_name, com, dev_name(&card->gdev->dev), 625 QETH_CARD_IFNAME(card)); 626 } 627 628 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 629 struct qeth_ipa_cmd *cmd) 630 { 631 QETH_CARD_TEXT(card, 5, "chkipad"); 632 633 if (IS_IPA_REPLY(cmd)) { 634 if (cmd->hdr.command != IPA_CMD_SETCCID && 635 cmd->hdr.command != IPA_CMD_DELCCID && 636 cmd->hdr.command != IPA_CMD_MODCCID && 637 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 638 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 639 return cmd; 640 } 641 642 /* handle unsolicited event: */ 643 switch (cmd->hdr.command) { 644 case IPA_CMD_STOPLAN: 645 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) { 646 dev_err(&card->gdev->dev, 647 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n", 648 QETH_CARD_IFNAME(card)); 649 qeth_close_dev(card); 650 } else { 651 dev_warn(&card->gdev->dev, 652 "The link for interface %s on CHPID 0x%X failed\n", 653 QETH_CARD_IFNAME(card), card->info.chpid); 654 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 655 netif_carrier_off(card->dev); 656 } 657 return NULL; 658 case IPA_CMD_STARTLAN: 659 dev_info(&card->gdev->dev, 660 "The link for %s on CHPID 0x%X has been restored\n", 661 QETH_CARD_IFNAME(card), card->info.chpid); 662 if (card->info.hwtrap) 663 card->info.hwtrap = 2; 664 qeth_schedule_recovery(card); 665 return NULL; 666 case IPA_CMD_SETBRIDGEPORT_IQD: 667 case IPA_CMD_SETBRIDGEPORT_OSA: 668 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 669 if (card->discipline->control_event_handler(card, cmd)) 670 return cmd; 671 return NULL; 672 case IPA_CMD_MODCCID: 673 return cmd; 674 case IPA_CMD_REGISTER_LOCAL_ADDR: 675 QETH_CARD_TEXT(card, 3, "irla"); 676 return NULL; 677 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 678 QETH_CARD_TEXT(card, 3, "urla"); 679 return NULL; 680 default: 681 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n"); 682 return cmd; 683 } 684 } 685 686 void qeth_clear_ipacmd_list(struct qeth_card *card) 687 { 688 struct qeth_reply *reply, *r; 689 unsigned long flags; 690 691 QETH_CARD_TEXT(card, 4, "clipalst"); 692 693 spin_lock_irqsave(&card->lock, flags); 694 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 695 qeth_get_reply(reply); 696 reply->rc = -EIO; 697 atomic_inc(&reply->received); 698 list_del_init(&reply->list); 699 wake_up(&reply->wait_q); 700 qeth_put_reply(reply); 701 } 702 spin_unlock_irqrestore(&card->lock, flags); 703 } 704 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 705 706 static int qeth_check_idx_response(struct qeth_card *card, 707 unsigned char *buffer) 708 { 709 if (!buffer) 710 return 0; 711 712 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 713 if ((buffer[2] & 0xc0) == 0xc0) { 714 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n", 715 buffer[4]); 716 QETH_CARD_TEXT(card, 2, "ckidxres"); 717 QETH_CARD_TEXT(card, 2, " idxterm"); 718 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 719 if (buffer[4] == 0xf6) { 720 dev_err(&card->gdev->dev, 721 "The qeth device is not configured " 722 "for the OSI layer required by z/VM\n"); 723 return -EPERM; 724 } 725 return -EIO; 726 } 727 return 0; 728 } 729 730 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 731 { 732 __u8 index; 733 734 index = channel->io_buf_no; 735 do { 736 if (channel->iob[index].state == BUF_STATE_FREE) { 737 channel->iob[index].state = BUF_STATE_LOCKED; 738 channel->io_buf_no = (channel->io_buf_no + 1) % 739 QETH_CMD_BUFFER_NO; 740 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 741 return channel->iob + index; 742 } 743 index = (index + 1) % QETH_CMD_BUFFER_NO; 744 } while (index != channel->io_buf_no); 745 746 return NULL; 747 } 748 749 void qeth_release_buffer(struct qeth_channel *channel, 750 struct qeth_cmd_buffer *iob) 751 { 752 unsigned long flags; 753 754 spin_lock_irqsave(&channel->iob_lock, flags); 755 iob->state = BUF_STATE_FREE; 756 iob->callback = qeth_send_control_data_cb; 757 iob->rc = 0; 758 spin_unlock_irqrestore(&channel->iob_lock, flags); 759 wake_up(&channel->wait_q); 760 } 761 EXPORT_SYMBOL_GPL(qeth_release_buffer); 762 763 static void qeth_release_buffer_cb(struct qeth_card *card, 764 struct qeth_channel *channel, 765 struct qeth_cmd_buffer *iob) 766 { 767 qeth_release_buffer(channel, iob); 768 } 769 770 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 771 { 772 struct qeth_cmd_buffer *buffer = NULL; 773 unsigned long flags; 774 775 spin_lock_irqsave(&channel->iob_lock, flags); 776 buffer = __qeth_get_buffer(channel); 777 spin_unlock_irqrestore(&channel->iob_lock, flags); 778 return buffer; 779 } 780 781 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 782 { 783 struct qeth_cmd_buffer *buffer; 784 wait_event(channel->wait_q, 785 ((buffer = qeth_get_buffer(channel)) != NULL)); 786 return buffer; 787 } 788 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 789 790 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 791 { 792 int cnt; 793 794 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 795 qeth_release_buffer(channel, &channel->iob[cnt]); 796 channel->io_buf_no = 0; 797 } 798 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 799 800 static void qeth_send_control_data_cb(struct qeth_card *card, 801 struct qeth_channel *channel, 802 struct qeth_cmd_buffer *iob) 803 { 804 struct qeth_ipa_cmd *cmd = NULL; 805 struct qeth_reply *reply, *r; 806 unsigned long flags; 807 int keep_reply; 808 int rc = 0; 809 810 QETH_CARD_TEXT(card, 4, "sndctlcb"); 811 rc = qeth_check_idx_response(card, iob->data); 812 switch (rc) { 813 case 0: 814 break; 815 case -EIO: 816 qeth_clear_ipacmd_list(card); 817 qeth_schedule_recovery(card); 818 /* fall through */ 819 default: 820 goto out; 821 } 822 823 if (IS_IPA(iob->data)) { 824 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 825 cmd = qeth_check_ipa_data(card, cmd); 826 if (!cmd) 827 goto out; 828 if (IS_OSN(card) && card->osn_info.assist_cb && 829 cmd->hdr.command != IPA_CMD_STARTLAN) { 830 card->osn_info.assist_cb(card->dev, cmd); 831 goto out; 832 } 833 } else { 834 /* non-IPA commands should only flow during initialization */ 835 if (card->state != CARD_STATE_DOWN) 836 goto out; 837 } 838 839 spin_lock_irqsave(&card->lock, flags); 840 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 841 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 842 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 843 qeth_get_reply(reply); 844 list_del_init(&reply->list); 845 spin_unlock_irqrestore(&card->lock, flags); 846 keep_reply = 0; 847 if (reply->callback != NULL) { 848 if (cmd) { 849 reply->offset = (__u16)((char *)cmd - 850 (char *)iob->data); 851 keep_reply = reply->callback(card, 852 reply, 853 (unsigned long)cmd); 854 } else 855 keep_reply = reply->callback(card, 856 reply, 857 (unsigned long)iob); 858 } 859 if (cmd) 860 reply->rc = (u16) cmd->hdr.return_code; 861 else if (iob->rc) 862 reply->rc = iob->rc; 863 if (keep_reply) { 864 spin_lock_irqsave(&card->lock, flags); 865 list_add_tail(&reply->list, 866 &card->cmd_waiter_list); 867 spin_unlock_irqrestore(&card->lock, flags); 868 } else { 869 atomic_inc(&reply->received); 870 wake_up(&reply->wait_q); 871 } 872 qeth_put_reply(reply); 873 goto out; 874 } 875 } 876 spin_unlock_irqrestore(&card->lock, flags); 877 out: 878 memcpy(&card->seqno.pdu_hdr_ack, 879 QETH_PDU_HEADER_SEQ_NO(iob->data), 880 QETH_SEQ_NO_LENGTH); 881 qeth_release_buffer(channel, iob); 882 } 883 884 static int qeth_set_thread_start_bit(struct qeth_card *card, 885 unsigned long thread) 886 { 887 unsigned long flags; 888 889 spin_lock_irqsave(&card->thread_mask_lock, flags); 890 if (!(card->thread_allowed_mask & thread) || 891 (card->thread_start_mask & thread)) { 892 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 893 return -EPERM; 894 } 895 card->thread_start_mask |= thread; 896 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 897 return 0; 898 } 899 900 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 901 { 902 unsigned long flags; 903 904 spin_lock_irqsave(&card->thread_mask_lock, flags); 905 card->thread_start_mask &= ~thread; 906 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 907 wake_up(&card->wait_q); 908 } 909 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 910 911 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 912 { 913 unsigned long flags; 914 915 spin_lock_irqsave(&card->thread_mask_lock, flags); 916 card->thread_running_mask &= ~thread; 917 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 918 wake_up_all(&card->wait_q); 919 } 920 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 921 922 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 923 { 924 unsigned long flags; 925 int rc = 0; 926 927 spin_lock_irqsave(&card->thread_mask_lock, flags); 928 if (card->thread_start_mask & thread) { 929 if ((card->thread_allowed_mask & thread) && 930 !(card->thread_running_mask & thread)) { 931 rc = 1; 932 card->thread_start_mask &= ~thread; 933 card->thread_running_mask |= thread; 934 } else 935 rc = -EPERM; 936 } 937 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 938 return rc; 939 } 940 941 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 942 { 943 int rc = 0; 944 945 wait_event(card->wait_q, 946 (rc = __qeth_do_run_thread(card, thread)) >= 0); 947 return rc; 948 } 949 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 950 951 void qeth_schedule_recovery(struct qeth_card *card) 952 { 953 QETH_CARD_TEXT(card, 2, "startrec"); 954 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 955 schedule_work(&card->kernel_thread_starter); 956 } 957 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 958 959 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev, 960 struct irb *irb) 961 { 962 int dstat, cstat; 963 char *sense; 964 965 sense = (char *) irb->ecw; 966 cstat = irb->scsw.cmd.cstat; 967 dstat = irb->scsw.cmd.dstat; 968 969 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 970 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 971 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 972 QETH_CARD_TEXT(card, 2, "CGENCHK"); 973 dev_warn(&cdev->dev, "The qeth device driver " 974 "failed to recover an error on the device\n"); 975 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 976 dev_name(&cdev->dev), dstat, cstat); 977 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 978 16, 1, irb, 64, 1); 979 return 1; 980 } 981 982 if (dstat & DEV_STAT_UNIT_CHECK) { 983 if (sense[SENSE_RESETTING_EVENT_BYTE] & 984 SENSE_RESETTING_EVENT_FLAG) { 985 QETH_CARD_TEXT(card, 2, "REVIND"); 986 return 1; 987 } 988 if (sense[SENSE_COMMAND_REJECT_BYTE] & 989 SENSE_COMMAND_REJECT_FLAG) { 990 QETH_CARD_TEXT(card, 2, "CMDREJi"); 991 return 1; 992 } 993 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 994 QETH_CARD_TEXT(card, 2, "AFFE"); 995 return 1; 996 } 997 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 998 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 999 return 0; 1000 } 1001 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1002 return 1; 1003 } 1004 return 0; 1005 } 1006 1007 static long qeth_check_irb_error(struct qeth_card *card, 1008 struct ccw_device *cdev, unsigned long intparm, 1009 struct irb *irb) 1010 { 1011 if (!IS_ERR(irb)) 1012 return 0; 1013 1014 switch (PTR_ERR(irb)) { 1015 case -EIO: 1016 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1017 dev_name(&cdev->dev)); 1018 QETH_CARD_TEXT(card, 2, "ckirberr"); 1019 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1020 break; 1021 case -ETIMEDOUT: 1022 dev_warn(&cdev->dev, "A hardware operation timed out" 1023 " on the device\n"); 1024 QETH_CARD_TEXT(card, 2, "ckirberr"); 1025 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1026 if (intparm == QETH_RCD_PARM) { 1027 if (card->data.ccwdev == cdev) { 1028 card->data.state = CH_STATE_DOWN; 1029 wake_up(&card->wait_q); 1030 } 1031 } 1032 break; 1033 default: 1034 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1035 dev_name(&cdev->dev), PTR_ERR(irb)); 1036 QETH_CARD_TEXT(card, 2, "ckirberr"); 1037 QETH_CARD_TEXT(card, 2, " rc???"); 1038 } 1039 return PTR_ERR(irb); 1040 } 1041 1042 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1043 struct irb *irb) 1044 { 1045 int rc; 1046 int cstat, dstat; 1047 struct qeth_cmd_buffer *iob = NULL; 1048 struct ccwgroup_device *gdev; 1049 struct qeth_channel *channel; 1050 struct qeth_card *card; 1051 1052 /* while we hold the ccwdev lock, this stays valid: */ 1053 gdev = dev_get_drvdata(&cdev->dev); 1054 card = dev_get_drvdata(&gdev->dev); 1055 if (!card) 1056 return; 1057 1058 QETH_CARD_TEXT(card, 5, "irq"); 1059 1060 if (card->read.ccwdev == cdev) { 1061 channel = &card->read; 1062 QETH_CARD_TEXT(card, 5, "read"); 1063 } else if (card->write.ccwdev == cdev) { 1064 channel = &card->write; 1065 QETH_CARD_TEXT(card, 5, "write"); 1066 } else { 1067 channel = &card->data; 1068 QETH_CARD_TEXT(card, 5, "data"); 1069 } 1070 1071 if (qeth_intparm_is_iob(intparm)) 1072 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1073 1074 if (qeth_check_irb_error(card, cdev, intparm, irb)) { 1075 /* IO was terminated, free its resources. */ 1076 if (iob) 1077 qeth_release_buffer(iob->channel, iob); 1078 atomic_set(&channel->irq_pending, 0); 1079 wake_up(&card->wait_q); 1080 return; 1081 } 1082 1083 atomic_set(&channel->irq_pending, 0); 1084 1085 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1086 channel->state = CH_STATE_STOPPED; 1087 1088 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1089 channel->state = CH_STATE_HALTED; 1090 1091 /*let's wake up immediately on data channel*/ 1092 if ((channel == &card->data) && (intparm != 0) && 1093 (intparm != QETH_RCD_PARM)) 1094 goto out; 1095 1096 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1097 QETH_CARD_TEXT(card, 6, "clrchpar"); 1098 /* we don't have to handle this further */ 1099 intparm = 0; 1100 } 1101 if (intparm == QETH_HALT_CHANNEL_PARM) { 1102 QETH_CARD_TEXT(card, 6, "hltchpar"); 1103 /* we don't have to handle this further */ 1104 intparm = 0; 1105 } 1106 1107 cstat = irb->scsw.cmd.cstat; 1108 dstat = irb->scsw.cmd.dstat; 1109 1110 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1111 (dstat & DEV_STAT_UNIT_CHECK) || 1112 (cstat)) { 1113 if (irb->esw.esw0.erw.cons) { 1114 dev_warn(&channel->ccwdev->dev, 1115 "The qeth device driver failed to recover " 1116 "an error on the device\n"); 1117 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1118 "0x%X dstat 0x%X\n", 1119 dev_name(&channel->ccwdev->dev), cstat, dstat); 1120 print_hex_dump(KERN_WARNING, "qeth: irb ", 1121 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1122 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1123 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1124 } 1125 if (intparm == QETH_RCD_PARM) { 1126 channel->state = CH_STATE_DOWN; 1127 goto out; 1128 } 1129 rc = qeth_get_problem(card, cdev, irb); 1130 if (rc) { 1131 card->read_or_write_problem = 1; 1132 qeth_clear_ipacmd_list(card); 1133 qeth_schedule_recovery(card); 1134 goto out; 1135 } 1136 } 1137 1138 if (intparm == QETH_RCD_PARM) { 1139 channel->state = CH_STATE_RCD_DONE; 1140 goto out; 1141 } 1142 if (channel == &card->data) 1143 return; 1144 if (channel == &card->read && 1145 channel->state == CH_STATE_UP) 1146 __qeth_issue_next_read(card); 1147 1148 if (iob && iob->callback) 1149 iob->callback(card, iob->channel, iob); 1150 1151 out: 1152 wake_up(&card->wait_q); 1153 return; 1154 } 1155 1156 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1157 struct qeth_qdio_out_buffer *buf, 1158 enum iucv_tx_notify notification) 1159 { 1160 struct sk_buff *skb; 1161 1162 skb_queue_walk(&buf->skb_list, skb) { 1163 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1164 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1165 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk) 1166 iucv_sk(skb->sk)->sk_txnotify(skb, notification); 1167 } 1168 } 1169 1170 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1171 { 1172 /* release may never happen from within CQ tasklet scope */ 1173 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1174 1175 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1176 qeth_notify_skbs(buf->q, buf, TX_NOTIFY_GENERALERROR); 1177 1178 __skb_queue_purge(&buf->skb_list); 1179 } 1180 1181 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1182 struct qeth_qdio_out_buffer *buf) 1183 { 1184 int i; 1185 1186 /* is PCI flag set on buffer? */ 1187 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1188 atomic_dec(&queue->set_pci_flags_count); 1189 1190 qeth_release_skbs(buf); 1191 1192 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1193 if (buf->buffer->element[i].addr && buf->is_header[i]) 1194 kmem_cache_free(qeth_core_header_cache, 1195 buf->buffer->element[i].addr); 1196 buf->is_header[i] = 0; 1197 } 1198 1199 qeth_scrub_qdio_buffer(buf->buffer, 1200 QETH_MAX_BUFFER_ELEMENTS(queue->card)); 1201 buf->next_element_to_fill = 0; 1202 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); 1203 } 1204 1205 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1206 { 1207 int j; 1208 1209 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1210 if (!q->bufs[j]) 1211 continue; 1212 qeth_cleanup_handled_pending(q, j, 1); 1213 qeth_clear_output_buffer(q, q->bufs[j]); 1214 if (free) { 1215 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1216 q->bufs[j] = NULL; 1217 } 1218 } 1219 } 1220 1221 void qeth_clear_qdio_buffers(struct qeth_card *card) 1222 { 1223 int i; 1224 1225 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1226 /* clear outbound buffers to free skbs */ 1227 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1228 if (card->qdio.out_qs[i]) { 1229 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1230 } 1231 } 1232 } 1233 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1234 1235 static void qeth_free_buffer_pool(struct qeth_card *card) 1236 { 1237 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1238 int i = 0; 1239 list_for_each_entry_safe(pool_entry, tmp, 1240 &card->qdio.init_pool.entry_list, init_list){ 1241 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1242 free_page((unsigned long)pool_entry->elements[i]); 1243 list_del(&pool_entry->init_list); 1244 kfree(pool_entry); 1245 } 1246 } 1247 1248 static void qeth_clean_channel(struct qeth_channel *channel) 1249 { 1250 struct ccw_device *cdev = channel->ccwdev; 1251 int cnt; 1252 1253 QETH_DBF_TEXT(SETUP, 2, "freech"); 1254 1255 spin_lock_irq(get_ccwdev_lock(cdev)); 1256 cdev->handler = NULL; 1257 spin_unlock_irq(get_ccwdev_lock(cdev)); 1258 1259 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1260 kfree(channel->iob[cnt].data); 1261 kfree(channel->ccw); 1262 } 1263 1264 static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers) 1265 { 1266 struct ccw_device *cdev = channel->ccwdev; 1267 int cnt; 1268 1269 QETH_DBF_TEXT(SETUP, 2, "setupch"); 1270 1271 channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA); 1272 if (!channel->ccw) 1273 return -ENOMEM; 1274 channel->state = CH_STATE_DOWN; 1275 atomic_set(&channel->irq_pending, 0); 1276 init_waitqueue_head(&channel->wait_q); 1277 1278 spin_lock_irq(get_ccwdev_lock(cdev)); 1279 cdev->handler = qeth_irq; 1280 spin_unlock_irq(get_ccwdev_lock(cdev)); 1281 1282 if (!alloc_buffers) 1283 return 0; 1284 1285 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 1286 channel->iob[cnt].data = kmalloc(QETH_BUFSIZE, 1287 GFP_KERNEL | GFP_DMA); 1288 if (channel->iob[cnt].data == NULL) 1289 break; 1290 channel->iob[cnt].state = BUF_STATE_FREE; 1291 channel->iob[cnt].channel = channel; 1292 channel->iob[cnt].callback = qeth_send_control_data_cb; 1293 channel->iob[cnt].rc = 0; 1294 } 1295 if (cnt < QETH_CMD_BUFFER_NO) { 1296 qeth_clean_channel(channel); 1297 return -ENOMEM; 1298 } 1299 channel->io_buf_no = 0; 1300 spin_lock_init(&channel->iob_lock); 1301 1302 return 0; 1303 } 1304 1305 static void qeth_set_single_write_queues(struct qeth_card *card) 1306 { 1307 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1308 (card->qdio.no_out_queues == 4)) 1309 qeth_free_qdio_buffers(card); 1310 1311 card->qdio.no_out_queues = 1; 1312 if (card->qdio.default_out_queue != 0) 1313 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1314 1315 card->qdio.default_out_queue = 0; 1316 } 1317 1318 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1319 { 1320 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1321 (card->qdio.no_out_queues == 1)) { 1322 qeth_free_qdio_buffers(card); 1323 card->qdio.default_out_queue = 2; 1324 } 1325 card->qdio.no_out_queues = 4; 1326 } 1327 1328 static void qeth_update_from_chp_desc(struct qeth_card *card) 1329 { 1330 struct ccw_device *ccwdev; 1331 struct channel_path_desc_fmt0 *chp_dsc; 1332 1333 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1334 1335 ccwdev = card->data.ccwdev; 1336 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1337 if (!chp_dsc) 1338 goto out; 1339 1340 card->info.func_level = 0x4100 + chp_dsc->desc; 1341 if (card->info.type == QETH_CARD_TYPE_IQD) 1342 goto out; 1343 1344 /* CHPP field bit 6 == 1 -> single queue */ 1345 if ((chp_dsc->chpp & 0x02) == 0x02) 1346 qeth_set_single_write_queues(card); 1347 else 1348 qeth_set_multiple_write_queues(card); 1349 out: 1350 kfree(chp_dsc); 1351 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1352 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1353 } 1354 1355 static void qeth_init_qdio_info(struct qeth_card *card) 1356 { 1357 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1358 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1359 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1360 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1361 card->qdio.no_out_queues = QETH_MAX_QUEUES; 1362 1363 /* inbound */ 1364 card->qdio.no_in_queues = 1; 1365 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1366 if (card->info.type == QETH_CARD_TYPE_IQD) 1367 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1368 else 1369 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1370 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1371 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1372 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1373 } 1374 1375 static void qeth_set_initial_options(struct qeth_card *card) 1376 { 1377 card->options.route4.type = NO_ROUTER; 1378 card->options.route6.type = NO_ROUTER; 1379 card->options.rx_sg_cb = QETH_RX_SG_CB; 1380 card->options.isolation = ISOLATION_MODE_NONE; 1381 card->options.cq = QETH_CQ_DISABLED; 1382 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 1383 } 1384 1385 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1386 { 1387 unsigned long flags; 1388 int rc = 0; 1389 1390 spin_lock_irqsave(&card->thread_mask_lock, flags); 1391 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1392 (u8) card->thread_start_mask, 1393 (u8) card->thread_allowed_mask, 1394 (u8) card->thread_running_mask); 1395 rc = (card->thread_start_mask & thread); 1396 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1397 return rc; 1398 } 1399 1400 static void qeth_start_kernel_thread(struct work_struct *work) 1401 { 1402 struct task_struct *ts; 1403 struct qeth_card *card = container_of(work, struct qeth_card, 1404 kernel_thread_starter); 1405 QETH_CARD_TEXT(card , 2, "strthrd"); 1406 1407 if (card->read.state != CH_STATE_UP && 1408 card->write.state != CH_STATE_UP) 1409 return; 1410 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1411 ts = kthread_run(card->discipline->recover, (void *)card, 1412 "qeth_recover"); 1413 if (IS_ERR(ts)) { 1414 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1415 qeth_clear_thread_running_bit(card, 1416 QETH_RECOVER_THREAD); 1417 } 1418 } 1419 } 1420 1421 static void qeth_buffer_reclaim_work(struct work_struct *); 1422 static void qeth_setup_card(struct qeth_card *card) 1423 { 1424 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1425 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1426 1427 card->info.type = CARD_RDEV(card)->id.driver_info; 1428 card->state = CARD_STATE_DOWN; 1429 spin_lock_init(&card->mclock); 1430 spin_lock_init(&card->lock); 1431 spin_lock_init(&card->ip_lock); 1432 spin_lock_init(&card->thread_mask_lock); 1433 mutex_init(&card->conf_mutex); 1434 mutex_init(&card->discipline_mutex); 1435 mutex_init(&card->vid_list_mutex); 1436 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1437 INIT_LIST_HEAD(&card->cmd_waiter_list); 1438 init_waitqueue_head(&card->wait_q); 1439 qeth_set_initial_options(card); 1440 /* IP address takeover */ 1441 INIT_LIST_HEAD(&card->ipato.entries); 1442 qeth_init_qdio_info(card); 1443 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1444 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1445 } 1446 1447 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1448 { 1449 struct qeth_card *card = container_of(slr, struct qeth_card, 1450 qeth_service_level); 1451 if (card->info.mcl_level[0]) 1452 seq_printf(m, "qeth: %s firmware level %s\n", 1453 CARD_BUS_ID(card), card->info.mcl_level); 1454 } 1455 1456 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev) 1457 { 1458 struct qeth_card *card; 1459 1460 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1461 card = kzalloc(sizeof(*card), GFP_KERNEL); 1462 if (!card) 1463 goto out; 1464 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1465 1466 card->gdev = gdev; 1467 dev_set_drvdata(&gdev->dev, card); 1468 CARD_RDEV(card) = gdev->cdev[0]; 1469 CARD_WDEV(card) = gdev->cdev[1]; 1470 CARD_DDEV(card) = gdev->cdev[2]; 1471 if (qeth_setup_channel(&card->read, true)) 1472 goto out_ip; 1473 if (qeth_setup_channel(&card->write, true)) 1474 goto out_channel; 1475 if (qeth_setup_channel(&card->data, false)) 1476 goto out_data; 1477 card->qeth_service_level.seq_print = qeth_core_sl_print; 1478 register_service_level(&card->qeth_service_level); 1479 return card; 1480 1481 out_data: 1482 qeth_clean_channel(&card->write); 1483 out_channel: 1484 qeth_clean_channel(&card->read); 1485 out_ip: 1486 dev_set_drvdata(&gdev->dev, NULL); 1487 kfree(card); 1488 out: 1489 return NULL; 1490 } 1491 1492 static int qeth_clear_channel(struct qeth_card *card, 1493 struct qeth_channel *channel) 1494 { 1495 int rc; 1496 1497 QETH_CARD_TEXT(card, 3, "clearch"); 1498 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1499 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1500 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1501 1502 if (rc) 1503 return rc; 1504 rc = wait_event_interruptible_timeout(card->wait_q, 1505 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1506 if (rc == -ERESTARTSYS) 1507 return rc; 1508 if (channel->state != CH_STATE_STOPPED) 1509 return -ETIME; 1510 channel->state = CH_STATE_DOWN; 1511 return 0; 1512 } 1513 1514 static int qeth_halt_channel(struct qeth_card *card, 1515 struct qeth_channel *channel) 1516 { 1517 int rc; 1518 1519 QETH_CARD_TEXT(card, 3, "haltch"); 1520 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1521 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1522 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1523 1524 if (rc) 1525 return rc; 1526 rc = wait_event_interruptible_timeout(card->wait_q, 1527 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1528 if (rc == -ERESTARTSYS) 1529 return rc; 1530 if (channel->state != CH_STATE_HALTED) 1531 return -ETIME; 1532 return 0; 1533 } 1534 1535 static int qeth_halt_channels(struct qeth_card *card) 1536 { 1537 int rc1 = 0, rc2 = 0, rc3 = 0; 1538 1539 QETH_CARD_TEXT(card, 3, "haltchs"); 1540 rc1 = qeth_halt_channel(card, &card->read); 1541 rc2 = qeth_halt_channel(card, &card->write); 1542 rc3 = qeth_halt_channel(card, &card->data); 1543 if (rc1) 1544 return rc1; 1545 if (rc2) 1546 return rc2; 1547 return rc3; 1548 } 1549 1550 static int qeth_clear_channels(struct qeth_card *card) 1551 { 1552 int rc1 = 0, rc2 = 0, rc3 = 0; 1553 1554 QETH_CARD_TEXT(card, 3, "clearchs"); 1555 rc1 = qeth_clear_channel(card, &card->read); 1556 rc2 = qeth_clear_channel(card, &card->write); 1557 rc3 = qeth_clear_channel(card, &card->data); 1558 if (rc1) 1559 return rc1; 1560 if (rc2) 1561 return rc2; 1562 return rc3; 1563 } 1564 1565 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1566 { 1567 int rc = 0; 1568 1569 QETH_CARD_TEXT(card, 3, "clhacrd"); 1570 1571 if (halt) 1572 rc = qeth_halt_channels(card); 1573 if (rc) 1574 return rc; 1575 return qeth_clear_channels(card); 1576 } 1577 1578 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1579 { 1580 int rc = 0; 1581 1582 QETH_CARD_TEXT(card, 3, "qdioclr"); 1583 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1584 QETH_QDIO_CLEANING)) { 1585 case QETH_QDIO_ESTABLISHED: 1586 if (card->info.type == QETH_CARD_TYPE_IQD) 1587 rc = qdio_shutdown(CARD_DDEV(card), 1588 QDIO_FLAG_CLEANUP_USING_HALT); 1589 else 1590 rc = qdio_shutdown(CARD_DDEV(card), 1591 QDIO_FLAG_CLEANUP_USING_CLEAR); 1592 if (rc) 1593 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1594 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1595 break; 1596 case QETH_QDIO_CLEANING: 1597 return rc; 1598 default: 1599 break; 1600 } 1601 rc = qeth_clear_halt_card(card, use_halt); 1602 if (rc) 1603 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1604 card->state = CARD_STATE_DOWN; 1605 return rc; 1606 } 1607 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1608 1609 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1610 int *length) 1611 { 1612 struct ciw *ciw; 1613 char *rcd_buf; 1614 int ret; 1615 struct qeth_channel *channel = &card->data; 1616 1617 /* 1618 * scan for RCD command in extended SenseID data 1619 */ 1620 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1621 if (!ciw || ciw->cmd == 0) 1622 return -EOPNOTSUPP; 1623 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1624 if (!rcd_buf) 1625 return -ENOMEM; 1626 1627 qeth_setup_ccw(channel->ccw, ciw->cmd, ciw->count, rcd_buf); 1628 channel->state = CH_STATE_RCD; 1629 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1630 ret = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1631 QETH_RCD_PARM, LPM_ANYPATH, 0, 1632 QETH_RCD_TIMEOUT); 1633 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1634 if (!ret) 1635 wait_event(card->wait_q, 1636 (channel->state == CH_STATE_RCD_DONE || 1637 channel->state == CH_STATE_DOWN)); 1638 if (channel->state == CH_STATE_DOWN) 1639 ret = -EIO; 1640 else 1641 channel->state = CH_STATE_DOWN; 1642 if (ret) { 1643 kfree(rcd_buf); 1644 *buffer = NULL; 1645 *length = 0; 1646 } else { 1647 *length = ciw->count; 1648 *buffer = rcd_buf; 1649 } 1650 return ret; 1651 } 1652 1653 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1654 { 1655 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1656 card->info.chpid = prcd[30]; 1657 card->info.unit_addr2 = prcd[31]; 1658 card->info.cula = prcd[63]; 1659 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1660 (prcd[0x11] == _ascebc['M'])); 1661 } 1662 1663 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1664 { 1665 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1666 struct diag26c_vnic_resp *response = NULL; 1667 struct diag26c_vnic_req *request = NULL; 1668 struct ccw_dev_id id; 1669 char userid[80]; 1670 int rc = 0; 1671 1672 QETH_DBF_TEXT(SETUP, 2, "vmlayer"); 1673 1674 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1675 if (rc) 1676 goto out; 1677 1678 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1679 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1680 if (!request || !response) { 1681 rc = -ENOMEM; 1682 goto out; 1683 } 1684 1685 ccw_device_get_id(CARD_RDEV(card), &id); 1686 request->resp_buf_len = sizeof(*response); 1687 request->resp_version = DIAG26C_VERSION6_VM65918; 1688 request->req_format = DIAG26C_VNIC_INFO; 1689 ASCEBC(userid, 8); 1690 memcpy(&request->sys_name, userid, 8); 1691 request->devno = id.devno; 1692 1693 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1694 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1695 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1696 if (rc) 1697 goto out; 1698 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1699 1700 if (request->resp_buf_len < sizeof(*response) || 1701 response->version != request->resp_version) { 1702 rc = -EIO; 1703 goto out; 1704 } 1705 1706 if (response->protocol == VNIC_INFO_PROT_L2) 1707 disc = QETH_DISCIPLINE_LAYER2; 1708 else if (response->protocol == VNIC_INFO_PROT_L3) 1709 disc = QETH_DISCIPLINE_LAYER3; 1710 1711 out: 1712 kfree(response); 1713 kfree(request); 1714 if (rc) 1715 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc); 1716 return disc; 1717 } 1718 1719 /* Determine whether the device requires a specific layer discipline */ 1720 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1721 { 1722 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1723 1724 if (card->info.type == QETH_CARD_TYPE_OSM || 1725 card->info.type == QETH_CARD_TYPE_OSN) 1726 disc = QETH_DISCIPLINE_LAYER2; 1727 else if (card->info.guestlan) 1728 disc = (card->info.type == QETH_CARD_TYPE_IQD) ? 1729 QETH_DISCIPLINE_LAYER3 : 1730 qeth_vm_detect_layer(card); 1731 1732 switch (disc) { 1733 case QETH_DISCIPLINE_LAYER2: 1734 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1735 break; 1736 case QETH_DISCIPLINE_LAYER3: 1737 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1738 break; 1739 default: 1740 QETH_DBF_TEXT(SETUP, 3, "force no"); 1741 } 1742 1743 return disc; 1744 } 1745 1746 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1747 { 1748 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1749 1750 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1751 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1752 card->info.blkt.time_total = 0; 1753 card->info.blkt.inter_packet = 0; 1754 card->info.blkt.inter_packet_jumbo = 0; 1755 } else { 1756 card->info.blkt.time_total = 250; 1757 card->info.blkt.inter_packet = 5; 1758 card->info.blkt.inter_packet_jumbo = 15; 1759 } 1760 } 1761 1762 static void qeth_init_tokens(struct qeth_card *card) 1763 { 1764 card->token.issuer_rm_w = 0x00010103UL; 1765 card->token.cm_filter_w = 0x00010108UL; 1766 card->token.cm_connection_w = 0x0001010aUL; 1767 card->token.ulp_filter_w = 0x0001010bUL; 1768 card->token.ulp_connection_w = 0x0001010dUL; 1769 } 1770 1771 static void qeth_init_func_level(struct qeth_card *card) 1772 { 1773 switch (card->info.type) { 1774 case QETH_CARD_TYPE_IQD: 1775 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1776 break; 1777 case QETH_CARD_TYPE_OSD: 1778 case QETH_CARD_TYPE_OSN: 1779 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1780 break; 1781 default: 1782 break; 1783 } 1784 } 1785 1786 static int qeth_idx_activate_get_answer(struct qeth_card *card, 1787 struct qeth_channel *channel, 1788 void (*reply_cb)(struct qeth_card *, 1789 struct qeth_channel *, 1790 struct qeth_cmd_buffer *)) 1791 { 1792 struct qeth_cmd_buffer *iob; 1793 int rc; 1794 1795 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1796 iob = qeth_get_buffer(channel); 1797 if (!iob) 1798 return -ENOMEM; 1799 iob->callback = reply_cb; 1800 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data); 1801 1802 wait_event(card->wait_q, 1803 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1804 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1805 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1806 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1807 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1808 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1809 1810 if (rc) { 1811 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1812 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1813 atomic_set(&channel->irq_pending, 0); 1814 wake_up(&card->wait_q); 1815 return rc; 1816 } 1817 rc = wait_event_interruptible_timeout(card->wait_q, 1818 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1819 if (rc == -ERESTARTSYS) 1820 return rc; 1821 if (channel->state != CH_STATE_UP) { 1822 rc = -ETIME; 1823 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1824 } else 1825 rc = 0; 1826 return rc; 1827 } 1828 1829 static int qeth_idx_activate_channel(struct qeth_card *card, 1830 struct qeth_channel *channel, 1831 void (*reply_cb)(struct qeth_card *, 1832 struct qeth_channel *, 1833 struct qeth_cmd_buffer *)) 1834 { 1835 struct qeth_cmd_buffer *iob; 1836 __u16 temp; 1837 __u8 tmp; 1838 int rc; 1839 struct ccw_dev_id temp_devid; 1840 1841 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1842 1843 iob = qeth_get_buffer(channel); 1844 if (!iob) 1845 return -ENOMEM; 1846 iob->callback = reply_cb; 1847 qeth_setup_ccw(channel->ccw, CCW_CMD_WRITE, IDX_ACTIVATE_SIZE, 1848 iob->data); 1849 if (channel == &card->write) { 1850 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1851 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1852 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1853 card->seqno.trans_hdr++; 1854 } else { 1855 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1856 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1857 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1858 } 1859 tmp = ((u8)card->dev->dev_port) | 0x80; 1860 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1861 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1862 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1863 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1864 &card->info.func_level, sizeof(__u16)); 1865 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1866 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1867 temp = (card->info.cula << 8) + card->info.unit_addr2; 1868 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1869 1870 wait_event(card->wait_q, 1871 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1872 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1873 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1874 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1875 (addr_t) iob, 0, 0, QETH_TIMEOUT); 1876 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1877 1878 if (rc) { 1879 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1880 rc); 1881 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1882 atomic_set(&channel->irq_pending, 0); 1883 wake_up(&card->wait_q); 1884 return rc; 1885 } 1886 rc = wait_event_interruptible_timeout(card->wait_q, 1887 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1888 if (rc == -ERESTARTSYS) 1889 return rc; 1890 if (channel->state != CH_STATE_ACTIVATING) { 1891 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1892 " failed to recover an error on the device\n"); 1893 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1894 dev_name(&channel->ccwdev->dev)); 1895 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1896 return -ETIME; 1897 } 1898 return qeth_idx_activate_get_answer(card, channel, reply_cb); 1899 } 1900 1901 static int qeth_peer_func_level(int level) 1902 { 1903 if ((level & 0xff) == 8) 1904 return (level & 0xff) + 0x400; 1905 if (((level >> 8) & 3) == 1) 1906 return (level & 0xff) + 0x200; 1907 return level; 1908 } 1909 1910 static void qeth_idx_write_cb(struct qeth_card *card, 1911 struct qeth_channel *channel, 1912 struct qeth_cmd_buffer *iob) 1913 { 1914 __u16 temp; 1915 1916 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1917 1918 if (channel->state == CH_STATE_DOWN) { 1919 channel->state = CH_STATE_ACTIVATING; 1920 goto out; 1921 } 1922 1923 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1924 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1925 dev_err(&channel->ccwdev->dev, 1926 "The adapter is used exclusively by another " 1927 "host\n"); 1928 else 1929 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1930 " negative reply\n", 1931 dev_name(&channel->ccwdev->dev)); 1932 goto out; 1933 } 1934 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1935 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1936 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1937 "function level mismatch (sent: 0x%x, received: " 1938 "0x%x)\n", dev_name(&channel->ccwdev->dev), 1939 card->info.func_level, temp); 1940 goto out; 1941 } 1942 channel->state = CH_STATE_UP; 1943 out: 1944 qeth_release_buffer(channel, iob); 1945 } 1946 1947 static void qeth_idx_read_cb(struct qeth_card *card, 1948 struct qeth_channel *channel, 1949 struct qeth_cmd_buffer *iob) 1950 { 1951 __u16 temp; 1952 1953 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1954 if (channel->state == CH_STATE_DOWN) { 1955 channel->state = CH_STATE_ACTIVATING; 1956 goto out; 1957 } 1958 1959 if (qeth_check_idx_response(card, iob->data)) 1960 goto out; 1961 1962 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1963 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1964 case QETH_IDX_ACT_ERR_EXCL: 1965 dev_err(&channel->ccwdev->dev, 1966 "The adapter is used exclusively by another " 1967 "host\n"); 1968 break; 1969 case QETH_IDX_ACT_ERR_AUTH: 1970 case QETH_IDX_ACT_ERR_AUTH_USER: 1971 dev_err(&channel->ccwdev->dev, 1972 "Setting the device online failed because of " 1973 "insufficient authorization\n"); 1974 break; 1975 default: 1976 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1977 " negative reply\n", 1978 dev_name(&channel->ccwdev->dev)); 1979 } 1980 QETH_CARD_TEXT_(card, 2, "idxread%c", 1981 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1982 goto out; 1983 } 1984 1985 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1986 if (temp != qeth_peer_func_level(card->info.func_level)) { 1987 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 1988 "level mismatch (sent: 0x%x, received: 0x%x)\n", 1989 dev_name(&channel->ccwdev->dev), 1990 card->info.func_level, temp); 1991 goto out; 1992 } 1993 memcpy(&card->token.issuer_rm_r, 1994 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1995 QETH_MPC_TOKEN_LENGTH); 1996 memcpy(&card->info.mcl_level[0], 1997 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1998 channel->state = CH_STATE_UP; 1999 out: 2000 qeth_release_buffer(channel, iob); 2001 } 2002 2003 void qeth_prepare_control_data(struct qeth_card *card, int len, 2004 struct qeth_cmd_buffer *iob) 2005 { 2006 qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, len, iob->data); 2007 iob->callback = qeth_release_buffer_cb; 2008 2009 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2010 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2011 card->seqno.trans_hdr++; 2012 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2013 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2014 card->seqno.pdu_hdr++; 2015 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2016 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2017 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2018 } 2019 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2020 2021 /** 2022 * qeth_send_control_data() - send control command to the card 2023 * @card: qeth_card structure pointer 2024 * @len: size of the command buffer 2025 * @iob: qeth_cmd_buffer pointer 2026 * @reply_cb: callback function pointer 2027 * @cb_card: pointer to the qeth_card structure 2028 * @cb_reply: pointer to the qeth_reply structure 2029 * @cb_cmd: pointer to the original iob for non-IPA 2030 * commands, or to the qeth_ipa_cmd structure 2031 * for the IPA commands. 2032 * @reply_param: private pointer passed to the callback 2033 * 2034 * Returns the value of the `return_code' field of the response 2035 * block returned from the hardware, or other error indication. 2036 * Value of zero indicates successful execution of the command. 2037 * 2038 * Callback function gets called one or more times, with cb_cmd 2039 * pointing to the response returned by the hardware. Callback 2040 * function must return non-zero if more reply blocks are expected, 2041 * and zero if the last or only reply block is received. Callback 2042 * function can get the value of the reply_param pointer from the 2043 * field 'param' of the structure qeth_reply. 2044 */ 2045 2046 int qeth_send_control_data(struct qeth_card *card, int len, 2047 struct qeth_cmd_buffer *iob, 2048 int (*reply_cb)(struct qeth_card *cb_card, 2049 struct qeth_reply *cb_reply, 2050 unsigned long cb_cmd), 2051 void *reply_param) 2052 { 2053 struct qeth_channel *channel = iob->channel; 2054 int rc; 2055 struct qeth_reply *reply = NULL; 2056 unsigned long timeout, event_timeout; 2057 struct qeth_ipa_cmd *cmd = NULL; 2058 2059 QETH_CARD_TEXT(card, 2, "sendctl"); 2060 2061 if (card->read_or_write_problem) { 2062 qeth_release_buffer(channel, iob); 2063 return -EIO; 2064 } 2065 reply = qeth_alloc_reply(card); 2066 if (!reply) { 2067 return -ENOMEM; 2068 } 2069 reply->callback = reply_cb; 2070 reply->param = reply_param; 2071 2072 init_waitqueue_head(&reply->wait_q); 2073 2074 while (atomic_cmpxchg(&channel->irq_pending, 0, 1)) ; 2075 2076 if (IS_IPA(iob->data)) { 2077 cmd = __ipa_cmd(iob); 2078 cmd->hdr.seqno = card->seqno.ipa++; 2079 reply->seqno = cmd->hdr.seqno; 2080 event_timeout = QETH_IPA_TIMEOUT; 2081 } else { 2082 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2083 event_timeout = QETH_TIMEOUT; 2084 } 2085 qeth_prepare_control_data(card, len, iob); 2086 2087 spin_lock_irq(&card->lock); 2088 list_add_tail(&reply->list, &card->cmd_waiter_list); 2089 spin_unlock_irq(&card->lock); 2090 2091 timeout = jiffies + event_timeout; 2092 2093 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2094 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 2095 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 2096 (addr_t) iob, 0, 0, event_timeout); 2097 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 2098 if (rc) { 2099 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2100 "ccw_device_start rc = %i\n", 2101 dev_name(&channel->ccwdev->dev), rc); 2102 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2103 spin_lock_irq(&card->lock); 2104 list_del_init(&reply->list); 2105 qeth_put_reply(reply); 2106 spin_unlock_irq(&card->lock); 2107 qeth_release_buffer(channel, iob); 2108 atomic_set(&channel->irq_pending, 0); 2109 wake_up(&card->wait_q); 2110 return rc; 2111 } 2112 2113 /* we have only one long running ipassist, since we can ensure 2114 process context of this command we can sleep */ 2115 if (cmd && cmd->hdr.command == IPA_CMD_SETIP && 2116 cmd->hdr.prot_version == QETH_PROT_IPV4) { 2117 if (!wait_event_timeout(reply->wait_q, 2118 atomic_read(&reply->received), event_timeout)) 2119 goto time_err; 2120 } else { 2121 while (!atomic_read(&reply->received)) { 2122 if (time_after(jiffies, timeout)) 2123 goto time_err; 2124 cpu_relax(); 2125 } 2126 } 2127 2128 rc = reply->rc; 2129 qeth_put_reply(reply); 2130 return rc; 2131 2132 time_err: 2133 reply->rc = -ETIME; 2134 spin_lock_irq(&card->lock); 2135 list_del_init(&reply->list); 2136 spin_unlock_irq(&card->lock); 2137 atomic_inc(&reply->received); 2138 rc = reply->rc; 2139 qeth_put_reply(reply); 2140 return rc; 2141 } 2142 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2143 2144 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2145 unsigned long data) 2146 { 2147 struct qeth_cmd_buffer *iob; 2148 2149 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2150 2151 iob = (struct qeth_cmd_buffer *) data; 2152 memcpy(&card->token.cm_filter_r, 2153 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2154 QETH_MPC_TOKEN_LENGTH); 2155 return 0; 2156 } 2157 2158 static int qeth_cm_enable(struct qeth_card *card) 2159 { 2160 int rc; 2161 struct qeth_cmd_buffer *iob; 2162 2163 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2164 2165 iob = qeth_wait_for_buffer(&card->write); 2166 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2167 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2168 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2169 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2170 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2171 2172 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2173 qeth_cm_enable_cb, NULL); 2174 return rc; 2175 } 2176 2177 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2178 unsigned long data) 2179 { 2180 struct qeth_cmd_buffer *iob; 2181 2182 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2183 2184 iob = (struct qeth_cmd_buffer *) data; 2185 memcpy(&card->token.cm_connection_r, 2186 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2187 QETH_MPC_TOKEN_LENGTH); 2188 return 0; 2189 } 2190 2191 static int qeth_cm_setup(struct qeth_card *card) 2192 { 2193 int rc; 2194 struct qeth_cmd_buffer *iob; 2195 2196 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2197 2198 iob = qeth_wait_for_buffer(&card->write); 2199 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2200 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2201 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2202 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2203 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2204 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2205 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2206 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2207 qeth_cm_setup_cb, NULL); 2208 return rc; 2209 } 2210 2211 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu) 2212 { 2213 struct net_device *dev = card->dev; 2214 unsigned int new_mtu; 2215 2216 if (!max_mtu) { 2217 /* IQD needs accurate max MTU to set up its RX buffers: */ 2218 if (IS_IQD(card)) 2219 return -EINVAL; 2220 /* tolerate quirky HW: */ 2221 max_mtu = ETH_MAX_MTU; 2222 } 2223 2224 rtnl_lock(); 2225 if (IS_IQD(card)) { 2226 /* move any device with default MTU to new max MTU: */ 2227 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu; 2228 2229 /* adjust RX buffer size to new max MTU: */ 2230 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE; 2231 if (dev->max_mtu && dev->max_mtu != max_mtu) 2232 qeth_free_qdio_buffers(card); 2233 } else { 2234 if (dev->mtu) 2235 new_mtu = dev->mtu; 2236 /* default MTUs for first setup: */ 2237 else if (IS_LAYER2(card)) 2238 new_mtu = ETH_DATA_LEN; 2239 else 2240 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */ 2241 } 2242 2243 dev->max_mtu = max_mtu; 2244 dev->mtu = min(new_mtu, max_mtu); 2245 rtnl_unlock(); 2246 return 0; 2247 } 2248 2249 static int qeth_get_mtu_outof_framesize(int framesize) 2250 { 2251 switch (framesize) { 2252 case 0x4000: 2253 return 8192; 2254 case 0x6000: 2255 return 16384; 2256 case 0xa000: 2257 return 32768; 2258 case 0xffff: 2259 return 57344; 2260 default: 2261 return 0; 2262 } 2263 } 2264 2265 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2266 unsigned long data) 2267 { 2268 __u16 mtu, framesize; 2269 __u16 len; 2270 __u8 link_type; 2271 struct qeth_cmd_buffer *iob; 2272 2273 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2274 2275 iob = (struct qeth_cmd_buffer *) data; 2276 memcpy(&card->token.ulp_filter_r, 2277 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2278 QETH_MPC_TOKEN_LENGTH); 2279 if (card->info.type == QETH_CARD_TYPE_IQD) { 2280 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2281 mtu = qeth_get_mtu_outof_framesize(framesize); 2282 } else { 2283 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data); 2284 } 2285 *(u16 *)reply->param = mtu; 2286 2287 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2288 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2289 memcpy(&link_type, 2290 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2291 card->info.link_type = link_type; 2292 } else 2293 card->info.link_type = 0; 2294 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2295 return 0; 2296 } 2297 2298 static u8 qeth_mpc_select_prot_type(struct qeth_card *card) 2299 { 2300 if (IS_OSN(card)) 2301 return QETH_PROT_OSN2; 2302 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP; 2303 } 2304 2305 static int qeth_ulp_enable(struct qeth_card *card) 2306 { 2307 u8 prot_type = qeth_mpc_select_prot_type(card); 2308 struct qeth_cmd_buffer *iob; 2309 u16 max_mtu; 2310 int rc; 2311 2312 /*FIXME: trace view callbacks*/ 2313 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2314 2315 iob = qeth_wait_for_buffer(&card->write); 2316 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2317 2318 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port; 2319 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2320 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2321 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2322 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2323 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2324 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2325 qeth_ulp_enable_cb, &max_mtu); 2326 if (rc) 2327 return rc; 2328 return qeth_update_max_mtu(card, max_mtu); 2329 } 2330 2331 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2332 unsigned long data) 2333 { 2334 struct qeth_cmd_buffer *iob; 2335 2336 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2337 2338 iob = (struct qeth_cmd_buffer *) data; 2339 memcpy(&card->token.ulp_connection_r, 2340 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2341 QETH_MPC_TOKEN_LENGTH); 2342 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2343 3)) { 2344 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2345 dev_err(&card->gdev->dev, "A connection could not be " 2346 "established because of an OLM limit\n"); 2347 iob->rc = -EMLINK; 2348 } 2349 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2350 return 0; 2351 } 2352 2353 static int qeth_ulp_setup(struct qeth_card *card) 2354 { 2355 int rc; 2356 __u16 temp; 2357 struct qeth_cmd_buffer *iob; 2358 struct ccw_dev_id dev_id; 2359 2360 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2361 2362 iob = qeth_wait_for_buffer(&card->write); 2363 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2364 2365 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2366 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2367 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2368 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2369 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2370 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2371 2372 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2373 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2374 temp = (card->info.cula << 8) + card->info.unit_addr2; 2375 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2376 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2377 qeth_ulp_setup_cb, NULL); 2378 return rc; 2379 } 2380 2381 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2382 { 2383 struct qeth_qdio_out_buffer *newbuf; 2384 2385 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2386 if (!newbuf) 2387 return -ENOMEM; 2388 2389 newbuf->buffer = q->qdio_bufs[bidx]; 2390 skb_queue_head_init(&newbuf->skb_list); 2391 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2392 newbuf->q = q; 2393 newbuf->next_pending = q->bufs[bidx]; 2394 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2395 q->bufs[bidx] = newbuf; 2396 return 0; 2397 } 2398 2399 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2400 { 2401 if (!q) 2402 return; 2403 2404 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2405 kfree(q); 2406 } 2407 2408 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2409 { 2410 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2411 2412 if (!q) 2413 return NULL; 2414 2415 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2416 kfree(q); 2417 return NULL; 2418 } 2419 return q; 2420 } 2421 2422 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2423 { 2424 int i, j; 2425 2426 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2427 2428 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2429 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2430 return 0; 2431 2432 QETH_DBF_TEXT(SETUP, 2, "inq"); 2433 card->qdio.in_q = qeth_alloc_qdio_queue(); 2434 if (!card->qdio.in_q) 2435 goto out_nomem; 2436 2437 /* inbound buffer pool */ 2438 if (qeth_alloc_buffer_pool(card)) 2439 goto out_freeinq; 2440 2441 /* outbound */ 2442 card->qdio.out_qs = 2443 kcalloc(card->qdio.no_out_queues, 2444 sizeof(struct qeth_qdio_out_q *), 2445 GFP_KERNEL); 2446 if (!card->qdio.out_qs) 2447 goto out_freepool; 2448 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2449 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2450 if (!card->qdio.out_qs[i]) 2451 goto out_freeoutq; 2452 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2453 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2454 card->qdio.out_qs[i]->queue_no = i; 2455 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2456 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2457 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2458 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2459 goto out_freeoutqbufs; 2460 } 2461 } 2462 2463 /* completion */ 2464 if (qeth_alloc_cq(card)) 2465 goto out_freeoutq; 2466 2467 return 0; 2468 2469 out_freeoutqbufs: 2470 while (j > 0) { 2471 --j; 2472 kmem_cache_free(qeth_qdio_outbuf_cache, 2473 card->qdio.out_qs[i]->bufs[j]); 2474 card->qdio.out_qs[i]->bufs[j] = NULL; 2475 } 2476 out_freeoutq: 2477 while (i > 0) { 2478 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2479 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2480 } 2481 kfree(card->qdio.out_qs); 2482 card->qdio.out_qs = NULL; 2483 out_freepool: 2484 qeth_free_buffer_pool(card); 2485 out_freeinq: 2486 qeth_free_qdio_queue(card->qdio.in_q); 2487 card->qdio.in_q = NULL; 2488 out_nomem: 2489 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2490 return -ENOMEM; 2491 } 2492 2493 static void qeth_free_qdio_buffers(struct qeth_card *card) 2494 { 2495 int i, j; 2496 2497 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2498 QETH_QDIO_UNINITIALIZED) 2499 return; 2500 2501 qeth_free_cq(card); 2502 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2503 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2504 if (card->qdio.in_q->bufs[j].rx_skb) 2505 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2506 } 2507 qeth_free_qdio_queue(card->qdio.in_q); 2508 card->qdio.in_q = NULL; 2509 /* inbound buffer pool */ 2510 qeth_free_buffer_pool(card); 2511 /* free outbound qdio_qs */ 2512 if (card->qdio.out_qs) { 2513 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2514 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2515 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2516 } 2517 kfree(card->qdio.out_qs); 2518 card->qdio.out_qs = NULL; 2519 } 2520 } 2521 2522 static void qeth_create_qib_param_field(struct qeth_card *card, 2523 char *param_field) 2524 { 2525 2526 param_field[0] = _ascebc['P']; 2527 param_field[1] = _ascebc['C']; 2528 param_field[2] = _ascebc['I']; 2529 param_field[3] = _ascebc['T']; 2530 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2531 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2532 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2533 } 2534 2535 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2536 char *param_field) 2537 { 2538 param_field[16] = _ascebc['B']; 2539 param_field[17] = _ascebc['L']; 2540 param_field[18] = _ascebc['K']; 2541 param_field[19] = _ascebc['T']; 2542 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2543 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2544 *((unsigned int *) (¶m_field[28])) = 2545 card->info.blkt.inter_packet_jumbo; 2546 } 2547 2548 static int qeth_qdio_activate(struct qeth_card *card) 2549 { 2550 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2551 return qdio_activate(CARD_DDEV(card)); 2552 } 2553 2554 static int qeth_dm_act(struct qeth_card *card) 2555 { 2556 int rc; 2557 struct qeth_cmd_buffer *iob; 2558 2559 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2560 2561 iob = qeth_wait_for_buffer(&card->write); 2562 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2563 2564 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2565 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2566 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2567 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2568 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2569 return rc; 2570 } 2571 2572 static int qeth_mpc_initialize(struct qeth_card *card) 2573 { 2574 int rc; 2575 2576 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2577 2578 rc = qeth_issue_next_read(card); 2579 if (rc) { 2580 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2581 return rc; 2582 } 2583 rc = qeth_cm_enable(card); 2584 if (rc) { 2585 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2586 goto out_qdio; 2587 } 2588 rc = qeth_cm_setup(card); 2589 if (rc) { 2590 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2591 goto out_qdio; 2592 } 2593 rc = qeth_ulp_enable(card); 2594 if (rc) { 2595 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2596 goto out_qdio; 2597 } 2598 rc = qeth_ulp_setup(card); 2599 if (rc) { 2600 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2601 goto out_qdio; 2602 } 2603 rc = qeth_alloc_qdio_buffers(card); 2604 if (rc) { 2605 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2606 goto out_qdio; 2607 } 2608 rc = qeth_qdio_establish(card); 2609 if (rc) { 2610 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2611 qeth_free_qdio_buffers(card); 2612 goto out_qdio; 2613 } 2614 rc = qeth_qdio_activate(card); 2615 if (rc) { 2616 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2617 goto out_qdio; 2618 } 2619 rc = qeth_dm_act(card); 2620 if (rc) { 2621 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2622 goto out_qdio; 2623 } 2624 2625 return 0; 2626 out_qdio: 2627 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2628 qdio_free(CARD_DDEV(card)); 2629 return rc; 2630 } 2631 2632 void qeth_print_status_message(struct qeth_card *card) 2633 { 2634 switch (card->info.type) { 2635 case QETH_CARD_TYPE_OSD: 2636 case QETH_CARD_TYPE_OSM: 2637 case QETH_CARD_TYPE_OSX: 2638 /* VM will use a non-zero first character 2639 * to indicate a HiperSockets like reporting 2640 * of the level OSA sets the first character to zero 2641 * */ 2642 if (!card->info.mcl_level[0]) { 2643 sprintf(card->info.mcl_level, "%02x%02x", 2644 card->info.mcl_level[2], 2645 card->info.mcl_level[3]); 2646 break; 2647 } 2648 /* fallthrough */ 2649 case QETH_CARD_TYPE_IQD: 2650 if ((card->info.guestlan) || 2651 (card->info.mcl_level[0] & 0x80)) { 2652 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2653 card->info.mcl_level[0]]; 2654 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2655 card->info.mcl_level[1]]; 2656 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2657 card->info.mcl_level[2]]; 2658 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2659 card->info.mcl_level[3]]; 2660 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2661 } 2662 break; 2663 default: 2664 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2665 } 2666 dev_info(&card->gdev->dev, 2667 "Device is a%s card%s%s%s\nwith link type %s.\n", 2668 qeth_get_cardname(card), 2669 (card->info.mcl_level[0]) ? " (level: " : "", 2670 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2671 (card->info.mcl_level[0]) ? ")" : "", 2672 qeth_get_cardname_short(card)); 2673 } 2674 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2675 2676 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2677 { 2678 struct qeth_buffer_pool_entry *entry; 2679 2680 QETH_CARD_TEXT(card, 5, "inwrklst"); 2681 2682 list_for_each_entry(entry, 2683 &card->qdio.init_pool.entry_list, init_list) { 2684 qeth_put_buffer_pool_entry(card, entry); 2685 } 2686 } 2687 2688 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2689 struct qeth_card *card) 2690 { 2691 struct list_head *plh; 2692 struct qeth_buffer_pool_entry *entry; 2693 int i, free; 2694 struct page *page; 2695 2696 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2697 return NULL; 2698 2699 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2700 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2701 free = 1; 2702 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2703 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2704 free = 0; 2705 break; 2706 } 2707 } 2708 if (free) { 2709 list_del_init(&entry->list); 2710 return entry; 2711 } 2712 } 2713 2714 /* no free buffer in pool so take first one and swap pages */ 2715 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2716 struct qeth_buffer_pool_entry, list); 2717 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2718 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2719 page = alloc_page(GFP_ATOMIC); 2720 if (!page) { 2721 return NULL; 2722 } else { 2723 free_page((unsigned long)entry->elements[i]); 2724 entry->elements[i] = page_address(page); 2725 if (card->options.performance_stats) 2726 card->perf_stats.sg_alloc_page_rx++; 2727 } 2728 } 2729 } 2730 list_del_init(&entry->list); 2731 return entry; 2732 } 2733 2734 static int qeth_init_input_buffer(struct qeth_card *card, 2735 struct qeth_qdio_buffer *buf) 2736 { 2737 struct qeth_buffer_pool_entry *pool_entry; 2738 int i; 2739 2740 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2741 buf->rx_skb = netdev_alloc_skb(card->dev, 2742 QETH_RX_PULL_LEN + ETH_HLEN); 2743 if (!buf->rx_skb) 2744 return 1; 2745 } 2746 2747 pool_entry = qeth_find_free_buffer_pool_entry(card); 2748 if (!pool_entry) 2749 return 1; 2750 2751 /* 2752 * since the buffer is accessed only from the input_tasklet 2753 * there shouldn't be a need to synchronize; also, since we use 2754 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2755 * buffers 2756 */ 2757 2758 buf->pool_entry = pool_entry; 2759 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2760 buf->buffer->element[i].length = PAGE_SIZE; 2761 buf->buffer->element[i].addr = pool_entry->elements[i]; 2762 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2763 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2764 else 2765 buf->buffer->element[i].eflags = 0; 2766 buf->buffer->element[i].sflags = 0; 2767 } 2768 return 0; 2769 } 2770 2771 int qeth_init_qdio_queues(struct qeth_card *card) 2772 { 2773 int i, j; 2774 int rc; 2775 2776 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2777 2778 /* inbound queue */ 2779 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2780 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2781 qeth_initialize_working_pool_list(card); 2782 /*give only as many buffers to hardware as we have buffer pool entries*/ 2783 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2784 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2785 card->qdio.in_q->next_buf_to_init = 2786 card->qdio.in_buf_pool.buf_count - 1; 2787 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2788 card->qdio.in_buf_pool.buf_count - 1); 2789 if (rc) { 2790 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2791 return rc; 2792 } 2793 2794 /* completion */ 2795 rc = qeth_cq_init(card); 2796 if (rc) { 2797 return rc; 2798 } 2799 2800 /* outbound queue */ 2801 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2802 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2803 QDIO_MAX_BUFFERS_PER_Q); 2804 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2805 qeth_clear_output_buffer(card->qdio.out_qs[i], 2806 card->qdio.out_qs[i]->bufs[j]); 2807 } 2808 card->qdio.out_qs[i]->card = card; 2809 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2810 card->qdio.out_qs[i]->do_pack = 0; 2811 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2812 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2813 atomic_set(&card->qdio.out_qs[i]->state, 2814 QETH_OUT_Q_UNLOCKED); 2815 } 2816 return 0; 2817 } 2818 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2819 2820 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2821 { 2822 switch (link_type) { 2823 case QETH_LINK_TYPE_HSTR: 2824 return 2; 2825 default: 2826 return 1; 2827 } 2828 } 2829 2830 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2831 struct qeth_ipa_cmd *cmd, 2832 enum qeth_ipa_cmds command, 2833 enum qeth_prot_versions prot) 2834 { 2835 cmd->hdr.command = command; 2836 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2837 /* cmd->hdr.seqno is set by qeth_send_control_data() */ 2838 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2839 cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port; 2840 cmd->hdr.prim_version_no = IS_LAYER2(card) ? 2 : 1; 2841 cmd->hdr.param_count = 1; 2842 cmd->hdr.prot_version = prot; 2843 } 2844 2845 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2846 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2847 { 2848 struct qeth_cmd_buffer *iob; 2849 2850 iob = qeth_get_buffer(&card->write); 2851 if (iob) { 2852 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot); 2853 } else { 2854 dev_warn(&card->gdev->dev, 2855 "The qeth driver ran out of channel command buffers\n"); 2856 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2857 dev_name(&card->gdev->dev)); 2858 } 2859 2860 return iob; 2861 } 2862 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2863 2864 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob) 2865 { 2866 u8 prot_type = qeth_mpc_select_prot_type(card); 2867 2868 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2869 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2870 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2871 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2872 } 2873 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2874 2875 /** 2876 * qeth_send_ipa_cmd() - send an IPA command 2877 * 2878 * See qeth_send_control_data() for explanation of the arguments. 2879 */ 2880 2881 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2882 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2883 unsigned long), 2884 void *reply_param) 2885 { 2886 int rc; 2887 2888 QETH_CARD_TEXT(card, 4, "sendipa"); 2889 qeth_prepare_ipa_cmd(card, iob); 2890 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2891 iob, reply_cb, reply_param); 2892 if (rc == -ETIME) { 2893 qeth_clear_ipacmd_list(card); 2894 qeth_schedule_recovery(card); 2895 } 2896 return rc; 2897 } 2898 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2899 2900 static int qeth_send_startlan(struct qeth_card *card) 2901 { 2902 int rc; 2903 struct qeth_cmd_buffer *iob; 2904 2905 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2906 2907 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2908 if (!iob) 2909 return -ENOMEM; 2910 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2911 return rc; 2912 } 2913 2914 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 2915 { 2916 if (!cmd->hdr.return_code) 2917 cmd->hdr.return_code = 2918 cmd->data.setadapterparms.hdr.return_code; 2919 return cmd->hdr.return_code; 2920 } 2921 2922 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2923 struct qeth_reply *reply, unsigned long data) 2924 { 2925 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2926 2927 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2928 if (qeth_setadpparms_inspect_rc(cmd)) 2929 return 0; 2930 2931 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2932 card->info.link_type = 2933 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2934 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2935 } 2936 card->options.adp.supported_funcs = 2937 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2938 return 0; 2939 } 2940 2941 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2942 __u32 command, __u32 cmdlen) 2943 { 2944 struct qeth_cmd_buffer *iob; 2945 struct qeth_ipa_cmd *cmd; 2946 2947 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 2948 QETH_PROT_IPV4); 2949 if (iob) { 2950 cmd = __ipa_cmd(iob); 2951 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 2952 cmd->data.setadapterparms.hdr.command_code = command; 2953 cmd->data.setadapterparms.hdr.used_total = 1; 2954 cmd->data.setadapterparms.hdr.seq_no = 1; 2955 } 2956 2957 return iob; 2958 } 2959 2960 static int qeth_query_setadapterparms(struct qeth_card *card) 2961 { 2962 int rc; 2963 struct qeth_cmd_buffer *iob; 2964 2965 QETH_CARD_TEXT(card, 3, "queryadp"); 2966 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 2967 sizeof(struct qeth_ipacmd_setadpparms)); 2968 if (!iob) 2969 return -ENOMEM; 2970 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 2971 return rc; 2972 } 2973 2974 static int qeth_query_ipassists_cb(struct qeth_card *card, 2975 struct qeth_reply *reply, unsigned long data) 2976 { 2977 struct qeth_ipa_cmd *cmd; 2978 2979 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 2980 2981 cmd = (struct qeth_ipa_cmd *) data; 2982 2983 switch (cmd->hdr.return_code) { 2984 case IPA_RC_NOTSUPP: 2985 case IPA_RC_L2_UNSUPPORTED_CMD: 2986 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 2987 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 2988 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 2989 return 0; 2990 default: 2991 if (cmd->hdr.return_code) { 2992 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 2993 "rc=%d\n", 2994 dev_name(&card->gdev->dev), 2995 cmd->hdr.return_code); 2996 return 0; 2997 } 2998 } 2999 3000 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3001 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3002 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3003 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3004 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3005 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3006 } else 3007 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3008 "\n", dev_name(&card->gdev->dev)); 3009 return 0; 3010 } 3011 3012 static int qeth_query_ipassists(struct qeth_card *card, 3013 enum qeth_prot_versions prot) 3014 { 3015 int rc; 3016 struct qeth_cmd_buffer *iob; 3017 3018 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3019 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3020 if (!iob) 3021 return -ENOMEM; 3022 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3023 return rc; 3024 } 3025 3026 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3027 struct qeth_reply *reply, unsigned long data) 3028 { 3029 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3030 struct qeth_query_switch_attributes *attrs; 3031 struct qeth_switch_info *sw_info; 3032 3033 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3034 if (qeth_setadpparms_inspect_rc(cmd)) 3035 return 0; 3036 3037 sw_info = (struct qeth_switch_info *)reply->param; 3038 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3039 sw_info->capabilities = attrs->capabilities; 3040 sw_info->settings = attrs->settings; 3041 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3042 sw_info->settings); 3043 return 0; 3044 } 3045 3046 int qeth_query_switch_attributes(struct qeth_card *card, 3047 struct qeth_switch_info *sw_info) 3048 { 3049 struct qeth_cmd_buffer *iob; 3050 3051 QETH_CARD_TEXT(card, 2, "qswiattr"); 3052 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3053 return -EOPNOTSUPP; 3054 if (!netif_carrier_ok(card->dev)) 3055 return -ENOMEDIUM; 3056 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3057 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3058 if (!iob) 3059 return -ENOMEM; 3060 return qeth_send_ipa_cmd(card, iob, 3061 qeth_query_switch_attributes_cb, sw_info); 3062 } 3063 3064 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3065 struct qeth_reply *reply, unsigned long data) 3066 { 3067 struct qeth_ipa_cmd *cmd; 3068 __u16 rc; 3069 3070 cmd = (struct qeth_ipa_cmd *)data; 3071 rc = cmd->hdr.return_code; 3072 if (rc) 3073 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3074 else 3075 card->info.diagass_support = cmd->data.diagass.ext; 3076 return 0; 3077 } 3078 3079 static int qeth_query_setdiagass(struct qeth_card *card) 3080 { 3081 struct qeth_cmd_buffer *iob; 3082 struct qeth_ipa_cmd *cmd; 3083 3084 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3085 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3086 if (!iob) 3087 return -ENOMEM; 3088 cmd = __ipa_cmd(iob); 3089 cmd->data.diagass.subcmd_len = 16; 3090 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3091 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3092 } 3093 3094 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3095 { 3096 unsigned long info = get_zeroed_page(GFP_KERNEL); 3097 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3098 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3099 struct ccw_dev_id ccwid; 3100 int level; 3101 3102 tid->chpid = card->info.chpid; 3103 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3104 tid->ssid = ccwid.ssid; 3105 tid->devno = ccwid.devno; 3106 if (!info) 3107 return; 3108 level = stsi(NULL, 0, 0, 0); 3109 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3110 tid->lparnr = info222->lpar_number; 3111 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3112 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3113 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3114 } 3115 free_page(info); 3116 return; 3117 } 3118 3119 static int qeth_hw_trap_cb(struct qeth_card *card, 3120 struct qeth_reply *reply, unsigned long data) 3121 { 3122 struct qeth_ipa_cmd *cmd; 3123 __u16 rc; 3124 3125 cmd = (struct qeth_ipa_cmd *)data; 3126 rc = cmd->hdr.return_code; 3127 if (rc) 3128 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3129 return 0; 3130 } 3131 3132 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3133 { 3134 struct qeth_cmd_buffer *iob; 3135 struct qeth_ipa_cmd *cmd; 3136 3137 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3138 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3139 if (!iob) 3140 return -ENOMEM; 3141 cmd = __ipa_cmd(iob); 3142 cmd->data.diagass.subcmd_len = 80; 3143 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3144 cmd->data.diagass.type = 1; 3145 cmd->data.diagass.action = action; 3146 switch (action) { 3147 case QETH_DIAGS_TRAP_ARM: 3148 cmd->data.diagass.options = 0x0003; 3149 cmd->data.diagass.ext = 0x00010000 + 3150 sizeof(struct qeth_trap_id); 3151 qeth_get_trap_id(card, 3152 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3153 break; 3154 case QETH_DIAGS_TRAP_DISARM: 3155 cmd->data.diagass.options = 0x0001; 3156 break; 3157 case QETH_DIAGS_TRAP_CAPTURE: 3158 break; 3159 } 3160 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3161 } 3162 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3163 3164 static int qeth_check_qdio_errors(struct qeth_card *card, 3165 struct qdio_buffer *buf, 3166 unsigned int qdio_error, 3167 const char *dbftext) 3168 { 3169 if (qdio_error) { 3170 QETH_CARD_TEXT(card, 2, dbftext); 3171 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3172 buf->element[15].sflags); 3173 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3174 buf->element[14].sflags); 3175 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3176 if ((buf->element[15].sflags) == 0x12) { 3177 card->stats.rx_dropped++; 3178 return 0; 3179 } else 3180 return 1; 3181 } 3182 return 0; 3183 } 3184 3185 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3186 { 3187 struct qeth_qdio_q *queue = card->qdio.in_q; 3188 struct list_head *lh; 3189 int count; 3190 int i; 3191 int rc; 3192 int newcount = 0; 3193 3194 count = (index < queue->next_buf_to_init)? 3195 card->qdio.in_buf_pool.buf_count - 3196 (queue->next_buf_to_init - index) : 3197 card->qdio.in_buf_pool.buf_count - 3198 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3199 /* only requeue at a certain threshold to avoid SIGAs */ 3200 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3201 for (i = queue->next_buf_to_init; 3202 i < queue->next_buf_to_init + count; ++i) { 3203 if (qeth_init_input_buffer(card, 3204 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3205 break; 3206 } else { 3207 newcount++; 3208 } 3209 } 3210 3211 if (newcount < count) { 3212 /* we are in memory shortage so we switch back to 3213 traditional skb allocation and drop packages */ 3214 atomic_set(&card->force_alloc_skb, 3); 3215 count = newcount; 3216 } else { 3217 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3218 } 3219 3220 if (!count) { 3221 i = 0; 3222 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3223 i++; 3224 if (i == card->qdio.in_buf_pool.buf_count) { 3225 QETH_CARD_TEXT(card, 2, "qsarbw"); 3226 card->reclaim_index = index; 3227 schedule_delayed_work( 3228 &card->buffer_reclaim_work, 3229 QETH_RECLAIM_WORK_TIME); 3230 } 3231 return; 3232 } 3233 3234 /* 3235 * according to old code it should be avoided to requeue all 3236 * 128 buffers in order to benefit from PCI avoidance. 3237 * this function keeps at least one buffer (the buffer at 3238 * 'index') un-requeued -> this buffer is the first buffer that 3239 * will be requeued the next time 3240 */ 3241 if (card->options.performance_stats) { 3242 card->perf_stats.inbound_do_qdio_cnt++; 3243 card->perf_stats.inbound_do_qdio_start_time = 3244 qeth_get_micros(); 3245 } 3246 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3247 queue->next_buf_to_init, count); 3248 if (card->options.performance_stats) 3249 card->perf_stats.inbound_do_qdio_time += 3250 qeth_get_micros() - 3251 card->perf_stats.inbound_do_qdio_start_time; 3252 if (rc) { 3253 QETH_CARD_TEXT(card, 2, "qinberr"); 3254 } 3255 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3256 QDIO_MAX_BUFFERS_PER_Q; 3257 } 3258 } 3259 3260 static void qeth_buffer_reclaim_work(struct work_struct *work) 3261 { 3262 struct qeth_card *card = container_of(work, struct qeth_card, 3263 buffer_reclaim_work.work); 3264 3265 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3266 qeth_queue_input_buffer(card, card->reclaim_index); 3267 } 3268 3269 static void qeth_handle_send_error(struct qeth_card *card, 3270 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3271 { 3272 int sbalf15 = buffer->buffer->element[15].sflags; 3273 3274 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3275 if (card->info.type == QETH_CARD_TYPE_IQD) { 3276 if (sbalf15 == 0) { 3277 qdio_err = 0; 3278 } else { 3279 qdio_err = 1; 3280 } 3281 } 3282 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3283 3284 if (!qdio_err) 3285 return; 3286 3287 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3288 return; 3289 3290 QETH_CARD_TEXT(card, 1, "lnkfail"); 3291 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3292 (u16)qdio_err, (u8)sbalf15); 3293 } 3294 3295 /** 3296 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3297 * @queue: queue to check for packing buffer 3298 * 3299 * Returns number of buffers that were prepared for flush. 3300 */ 3301 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3302 { 3303 struct qeth_qdio_out_buffer *buffer; 3304 3305 buffer = queue->bufs[queue->next_buf_to_fill]; 3306 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3307 (buffer->next_element_to_fill > 0)) { 3308 /* it's a packing buffer */ 3309 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3310 queue->next_buf_to_fill = 3311 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3312 return 1; 3313 } 3314 return 0; 3315 } 3316 3317 /* 3318 * Switched to packing state if the number of used buffers on a queue 3319 * reaches a certain limit. 3320 */ 3321 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3322 { 3323 if (!queue->do_pack) { 3324 if (atomic_read(&queue->used_buffers) 3325 >= QETH_HIGH_WATERMARK_PACK){ 3326 /* switch non-PACKING -> PACKING */ 3327 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3328 if (queue->card->options.performance_stats) 3329 queue->card->perf_stats.sc_dp_p++; 3330 queue->do_pack = 1; 3331 } 3332 } 3333 } 3334 3335 /* 3336 * Switches from packing to non-packing mode. If there is a packing 3337 * buffer on the queue this buffer will be prepared to be flushed. 3338 * In that case 1 is returned to inform the caller. If no buffer 3339 * has to be flushed, zero is returned. 3340 */ 3341 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3342 { 3343 if (queue->do_pack) { 3344 if (atomic_read(&queue->used_buffers) 3345 <= QETH_LOW_WATERMARK_PACK) { 3346 /* switch PACKING -> non-PACKING */ 3347 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3348 if (queue->card->options.performance_stats) 3349 queue->card->perf_stats.sc_p_dp++; 3350 queue->do_pack = 0; 3351 return qeth_prep_flush_pack_buffer(queue); 3352 } 3353 } 3354 return 0; 3355 } 3356 3357 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3358 int count) 3359 { 3360 struct qeth_qdio_out_buffer *buf; 3361 int rc; 3362 int i; 3363 unsigned int qdio_flags; 3364 3365 for (i = index; i < index + count; ++i) { 3366 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3367 buf = queue->bufs[bidx]; 3368 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3369 SBAL_EFLAGS_LAST_ENTRY; 3370 3371 if (queue->bufstates) 3372 queue->bufstates[bidx].user = buf; 3373 3374 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3375 continue; 3376 3377 if (!queue->do_pack) { 3378 if ((atomic_read(&queue->used_buffers) >= 3379 (QETH_HIGH_WATERMARK_PACK - 3380 QETH_WATERMARK_PACK_FUZZ)) && 3381 !atomic_read(&queue->set_pci_flags_count)) { 3382 /* it's likely that we'll go to packing 3383 * mode soon */ 3384 atomic_inc(&queue->set_pci_flags_count); 3385 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3386 } 3387 } else { 3388 if (!atomic_read(&queue->set_pci_flags_count)) { 3389 /* 3390 * there's no outstanding PCI any more, so we 3391 * have to request a PCI to be sure the the PCI 3392 * will wake at some time in the future then we 3393 * can flush packed buffers that might still be 3394 * hanging around, which can happen if no 3395 * further send was requested by the stack 3396 */ 3397 atomic_inc(&queue->set_pci_flags_count); 3398 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3399 } 3400 } 3401 } 3402 3403 netif_trans_update(queue->card->dev); 3404 if (queue->card->options.performance_stats) { 3405 queue->card->perf_stats.outbound_do_qdio_cnt++; 3406 queue->card->perf_stats.outbound_do_qdio_start_time = 3407 qeth_get_micros(); 3408 } 3409 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3410 if (atomic_read(&queue->set_pci_flags_count)) 3411 qdio_flags |= QDIO_FLAG_PCI_OUT; 3412 atomic_add(count, &queue->used_buffers); 3413 3414 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3415 queue->queue_no, index, count); 3416 if (queue->card->options.performance_stats) 3417 queue->card->perf_stats.outbound_do_qdio_time += 3418 qeth_get_micros() - 3419 queue->card->perf_stats.outbound_do_qdio_start_time; 3420 if (rc) { 3421 queue->card->stats.tx_errors += count; 3422 /* ignore temporary SIGA errors without busy condition */ 3423 if (rc == -ENOBUFS) 3424 return; 3425 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3426 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3427 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3428 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3429 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3430 3431 /* this must not happen under normal circumstances. if it 3432 * happens something is really wrong -> recover */ 3433 qeth_schedule_recovery(queue->card); 3434 return; 3435 } 3436 if (queue->card->options.performance_stats) 3437 queue->card->perf_stats.bufs_sent += count; 3438 } 3439 3440 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3441 { 3442 int index; 3443 int flush_cnt = 0; 3444 int q_was_packing = 0; 3445 3446 /* 3447 * check if weed have to switch to non-packing mode or if 3448 * we have to get a pci flag out on the queue 3449 */ 3450 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3451 !atomic_read(&queue->set_pci_flags_count)) { 3452 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3453 QETH_OUT_Q_UNLOCKED) { 3454 /* 3455 * If we get in here, there was no action in 3456 * do_send_packet. So, we check if there is a 3457 * packing buffer to be flushed here. 3458 */ 3459 netif_stop_queue(queue->card->dev); 3460 index = queue->next_buf_to_fill; 3461 q_was_packing = queue->do_pack; 3462 /* queue->do_pack may change */ 3463 barrier(); 3464 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3465 if (!flush_cnt && 3466 !atomic_read(&queue->set_pci_flags_count)) 3467 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3468 if (queue->card->options.performance_stats && 3469 q_was_packing) 3470 queue->card->perf_stats.bufs_sent_pack += 3471 flush_cnt; 3472 if (flush_cnt) 3473 qeth_flush_buffers(queue, index, flush_cnt); 3474 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3475 } 3476 } 3477 } 3478 3479 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3480 unsigned long card_ptr) 3481 { 3482 struct qeth_card *card = (struct qeth_card *)card_ptr; 3483 3484 if (card->dev->flags & IFF_UP) 3485 napi_schedule(&card->napi); 3486 } 3487 3488 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3489 { 3490 int rc; 3491 3492 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3493 rc = -1; 3494 goto out; 3495 } else { 3496 if (card->options.cq == cq) { 3497 rc = 0; 3498 goto out; 3499 } 3500 3501 if (card->state != CARD_STATE_DOWN && 3502 card->state != CARD_STATE_RECOVER) { 3503 rc = -1; 3504 goto out; 3505 } 3506 3507 qeth_free_qdio_buffers(card); 3508 card->options.cq = cq; 3509 rc = 0; 3510 } 3511 out: 3512 return rc; 3513 3514 } 3515 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3516 3517 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err, 3518 unsigned int queue, int first_element, 3519 int count) 3520 { 3521 struct qeth_qdio_q *cq = card->qdio.c_q; 3522 int i; 3523 int rc; 3524 3525 if (!qeth_is_cq(card, queue)) 3526 goto out; 3527 3528 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3529 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3530 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3531 3532 if (qdio_err) { 3533 netif_stop_queue(card->dev); 3534 qeth_schedule_recovery(card); 3535 goto out; 3536 } 3537 3538 if (card->options.performance_stats) { 3539 card->perf_stats.cq_cnt++; 3540 card->perf_stats.cq_start_time = qeth_get_micros(); 3541 } 3542 3543 for (i = first_element; i < first_element + count; ++i) { 3544 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3545 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3546 int e = 0; 3547 3548 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3549 buffer->element[e].addr) { 3550 unsigned long phys_aob_addr; 3551 3552 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3553 qeth_qdio_handle_aob(card, phys_aob_addr); 3554 ++e; 3555 } 3556 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER); 3557 } 3558 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3559 card->qdio.c_q->next_buf_to_init, 3560 count); 3561 if (rc) { 3562 dev_warn(&card->gdev->dev, 3563 "QDIO reported an error, rc=%i\n", rc); 3564 QETH_CARD_TEXT(card, 2, "qcqherr"); 3565 } 3566 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3567 + count) % QDIO_MAX_BUFFERS_PER_Q; 3568 3569 netif_wake_queue(card->dev); 3570 3571 if (card->options.performance_stats) { 3572 int delta_t = qeth_get_micros(); 3573 delta_t -= card->perf_stats.cq_start_time; 3574 card->perf_stats.cq_time += delta_t; 3575 } 3576 out: 3577 return; 3578 } 3579 3580 static void qeth_qdio_input_handler(struct ccw_device *ccwdev, 3581 unsigned int qdio_err, int queue, 3582 int first_elem, int count, 3583 unsigned long card_ptr) 3584 { 3585 struct qeth_card *card = (struct qeth_card *)card_ptr; 3586 3587 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3588 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3589 3590 if (qeth_is_cq(card, queue)) 3591 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3592 else if (qdio_err) 3593 qeth_schedule_recovery(card); 3594 } 3595 3596 static void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3597 unsigned int qdio_error, int __queue, 3598 int first_element, int count, 3599 unsigned long card_ptr) 3600 { 3601 struct qeth_card *card = (struct qeth_card *) card_ptr; 3602 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3603 struct qeth_qdio_out_buffer *buffer; 3604 int i; 3605 3606 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3607 if (qdio_error & QDIO_ERROR_FATAL) { 3608 QETH_CARD_TEXT(card, 2, "achkcond"); 3609 netif_stop_queue(card->dev); 3610 qeth_schedule_recovery(card); 3611 return; 3612 } 3613 if (card->options.performance_stats) { 3614 card->perf_stats.outbound_handler_cnt++; 3615 card->perf_stats.outbound_handler_start_time = 3616 qeth_get_micros(); 3617 } 3618 for (i = first_element; i < (first_element + count); ++i) { 3619 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3620 buffer = queue->bufs[bidx]; 3621 qeth_handle_send_error(card, buffer, qdio_error); 3622 3623 if (queue->bufstates && 3624 (queue->bufstates[bidx].flags & 3625 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3626 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3627 3628 if (atomic_cmpxchg(&buffer->state, 3629 QETH_QDIO_BUF_PRIMED, 3630 QETH_QDIO_BUF_PENDING) == 3631 QETH_QDIO_BUF_PRIMED) { 3632 qeth_notify_skbs(queue, buffer, 3633 TX_NOTIFY_PENDING); 3634 } 3635 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3636 3637 /* prepare the queue slot for re-use: */ 3638 qeth_scrub_qdio_buffer(buffer->buffer, 3639 QETH_MAX_BUFFER_ELEMENTS(card)); 3640 if (qeth_init_qdio_out_buf(queue, bidx)) { 3641 QETH_CARD_TEXT(card, 2, "outofbuf"); 3642 qeth_schedule_recovery(card); 3643 } 3644 } else { 3645 if (card->options.cq == QETH_CQ_ENABLED) { 3646 enum iucv_tx_notify n; 3647 3648 n = qeth_compute_cq_notification( 3649 buffer->buffer->element[15].sflags, 0); 3650 qeth_notify_skbs(queue, buffer, n); 3651 } 3652 3653 qeth_clear_output_buffer(queue, buffer); 3654 } 3655 qeth_cleanup_handled_pending(queue, bidx, 0); 3656 } 3657 atomic_sub(count, &queue->used_buffers); 3658 /* check if we need to do something on this outbound queue */ 3659 if (card->info.type != QETH_CARD_TYPE_IQD) 3660 qeth_check_outbound_queue(queue); 3661 3662 netif_wake_queue(queue->card->dev); 3663 if (card->options.performance_stats) 3664 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3665 card->perf_stats.outbound_handler_start_time; 3666 } 3667 3668 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3669 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3670 { 3671 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3672 return 2; 3673 return queue_num; 3674 } 3675 3676 /** 3677 * Note: Function assumes that we have 4 outbound queues. 3678 */ 3679 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3680 int ipv) 3681 { 3682 __be16 *tci; 3683 u8 tos; 3684 3685 switch (card->qdio.do_prio_queueing) { 3686 case QETH_PRIO_Q_ING_TOS: 3687 case QETH_PRIO_Q_ING_PREC: 3688 switch (ipv) { 3689 case 4: 3690 tos = ipv4_get_dsfield(ip_hdr(skb)); 3691 break; 3692 case 6: 3693 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3694 break; 3695 default: 3696 return card->qdio.default_out_queue; 3697 } 3698 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3699 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3700 if (tos & IPTOS_MINCOST) 3701 return qeth_cut_iqd_prio(card, 3); 3702 if (tos & IPTOS_RELIABILITY) 3703 return 2; 3704 if (tos & IPTOS_THROUGHPUT) 3705 return 1; 3706 if (tos & IPTOS_LOWDELAY) 3707 return 0; 3708 break; 3709 case QETH_PRIO_Q_ING_SKB: 3710 if (skb->priority > 5) 3711 return 0; 3712 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3713 case QETH_PRIO_Q_ING_VLAN: 3714 tci = &((struct ethhdr *)skb->data)->h_proto; 3715 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3716 return qeth_cut_iqd_prio(card, 3717 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3718 break; 3719 default: 3720 break; 3721 } 3722 return card->qdio.default_out_queue; 3723 } 3724 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3725 3726 /** 3727 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3728 * @skb: SKB address 3729 * 3730 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3731 * fragmented part of the SKB. Returns zero for linear SKB. 3732 */ 3733 static int qeth_get_elements_for_frags(struct sk_buff *skb) 3734 { 3735 int cnt, elements = 0; 3736 3737 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3738 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3739 3740 elements += qeth_get_elements_for_range( 3741 (addr_t)skb_frag_address(frag), 3742 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3743 } 3744 return elements; 3745 } 3746 3747 /** 3748 * qeth_count_elements() - Counts the number of QDIO buffer elements needed 3749 * to transmit an skb. 3750 * @skb: the skb to operate on. 3751 * @data_offset: skip this part of the skb's linear data 3752 * 3753 * Returns the number of pages, and thus QDIO buffer elements, needed to map the 3754 * skb's data (both its linear part and paged fragments). 3755 */ 3756 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset) 3757 { 3758 unsigned int elements = qeth_get_elements_for_frags(skb); 3759 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3760 addr_t start = (addr_t)skb->data + data_offset; 3761 3762 if (start != end) 3763 elements += qeth_get_elements_for_range(start, end); 3764 return elements; 3765 } 3766 EXPORT_SYMBOL_GPL(qeth_count_elements); 3767 3768 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \ 3769 MAX_TCP_HEADER) 3770 3771 /** 3772 * qeth_add_hw_header() - add a HW header to an skb. 3773 * @skb: skb that the HW header should be added to. 3774 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3775 * it contains a valid pointer to a qeth_hdr. 3776 * @hdr_len: length of the HW header. 3777 * @proto_len: length of protocol headers that need to be in same page as the 3778 * HW header. 3779 * 3780 * Returns the pushed length. If the header can't be pushed on 3781 * (eg. because it would cross a page boundary), it is allocated from 3782 * the cache instead and 0 is returned. 3783 * The number of needed buffer elements is returned in @elements. 3784 * Error to create the hdr is indicated by returning with < 0. 3785 */ 3786 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb, 3787 struct qeth_hdr **hdr, unsigned int hdr_len, 3788 unsigned int proto_len, unsigned int *elements) 3789 { 3790 const unsigned int max_elements = QETH_MAX_BUFFER_ELEMENTS(card); 3791 const unsigned int contiguous = proto_len ? proto_len : 1; 3792 unsigned int __elements; 3793 addr_t start, end; 3794 bool push_ok; 3795 int rc; 3796 3797 check_layout: 3798 start = (addr_t)skb->data - hdr_len; 3799 end = (addr_t)skb->data; 3800 3801 if (qeth_get_elements_for_range(start, end + contiguous) == 1) { 3802 /* Push HW header into same page as first protocol header. */ 3803 push_ok = true; 3804 /* ... but TSO always needs a separate element for headers: */ 3805 if (skb_is_gso(skb)) 3806 __elements = 1 + qeth_count_elements(skb, proto_len); 3807 else 3808 __elements = qeth_count_elements(skb, 0); 3809 } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) { 3810 /* Push HW header into a new page. */ 3811 push_ok = true; 3812 __elements = 1 + qeth_count_elements(skb, 0); 3813 } else { 3814 /* Use header cache, copy protocol headers up. */ 3815 push_ok = false; 3816 __elements = 1 + qeth_count_elements(skb, proto_len); 3817 } 3818 3819 /* Compress skb to fit into one IO buffer: */ 3820 if (__elements > max_elements) { 3821 if (!skb_is_nonlinear(skb)) { 3822 /* Drop it, no easy way of shrinking it further. */ 3823 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n", 3824 max_elements, __elements, skb->len); 3825 return -E2BIG; 3826 } 3827 3828 rc = skb_linearize(skb); 3829 if (card->options.performance_stats) { 3830 if (rc) 3831 card->perf_stats.tx_linfail++; 3832 else 3833 card->perf_stats.tx_lin++; 3834 } 3835 if (rc) 3836 return rc; 3837 3838 /* Linearization changed the layout, re-evaluate: */ 3839 goto check_layout; 3840 } 3841 3842 *elements = __elements; 3843 /* Add the header: */ 3844 if (push_ok) { 3845 *hdr = skb_push(skb, hdr_len); 3846 return hdr_len; 3847 } 3848 /* fall back */ 3849 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE) 3850 return -E2BIG; 3851 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3852 if (!*hdr) 3853 return -ENOMEM; 3854 /* Copy protocol headers behind HW header: */ 3855 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len); 3856 return 0; 3857 } 3858 EXPORT_SYMBOL_GPL(qeth_add_hw_header); 3859 3860 static void __qeth_fill_buffer(struct sk_buff *skb, 3861 struct qeth_qdio_out_buffer *buf, 3862 bool is_first_elem, unsigned int offset) 3863 { 3864 struct qdio_buffer *buffer = buf->buffer; 3865 int element = buf->next_element_to_fill; 3866 int length = skb_headlen(skb) - offset; 3867 char *data = skb->data + offset; 3868 int length_here, cnt; 3869 3870 /* map linear part into buffer element(s) */ 3871 while (length > 0) { 3872 /* length_here is the remaining amount of data in this page */ 3873 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3874 if (length < length_here) 3875 length_here = length; 3876 3877 buffer->element[element].addr = data; 3878 buffer->element[element].length = length_here; 3879 length -= length_here; 3880 if (is_first_elem) { 3881 is_first_elem = false; 3882 if (length || skb_is_nonlinear(skb)) 3883 /* skb needs additional elements */ 3884 buffer->element[element].eflags = 3885 SBAL_EFLAGS_FIRST_FRAG; 3886 else 3887 buffer->element[element].eflags = 0; 3888 } else { 3889 buffer->element[element].eflags = 3890 SBAL_EFLAGS_MIDDLE_FRAG; 3891 } 3892 data += length_here; 3893 element++; 3894 } 3895 3896 /* map page frags into buffer element(s) */ 3897 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3898 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3899 3900 data = skb_frag_address(frag); 3901 length = skb_frag_size(frag); 3902 while (length > 0) { 3903 length_here = PAGE_SIZE - 3904 ((unsigned long) data % PAGE_SIZE); 3905 if (length < length_here) 3906 length_here = length; 3907 3908 buffer->element[element].addr = data; 3909 buffer->element[element].length = length_here; 3910 buffer->element[element].eflags = 3911 SBAL_EFLAGS_MIDDLE_FRAG; 3912 length -= length_here; 3913 data += length_here; 3914 element++; 3915 } 3916 } 3917 3918 if (buffer->element[element - 1].eflags) 3919 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3920 buf->next_element_to_fill = element; 3921 } 3922 3923 /** 3924 * qeth_fill_buffer() - map skb into an output buffer 3925 * @queue: QDIO queue to submit the buffer on 3926 * @buf: buffer to transport the skb 3927 * @skb: skb to map into the buffer 3928 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 3929 * from qeth_core_header_cache. 3930 * @offset: when mapping the skb, start at skb->data + offset 3931 * @hd_len: if > 0, build a dedicated header element of this size 3932 */ 3933 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 3934 struct qeth_qdio_out_buffer *buf, 3935 struct sk_buff *skb, struct qeth_hdr *hdr, 3936 unsigned int offset, unsigned int hd_len) 3937 { 3938 struct qdio_buffer *buffer = buf->buffer; 3939 bool is_first_elem = true; 3940 int flush_cnt = 0; 3941 3942 __skb_queue_tail(&buf->skb_list, skb); 3943 3944 /* build dedicated header element */ 3945 if (hd_len) { 3946 int element = buf->next_element_to_fill; 3947 is_first_elem = false; 3948 3949 buffer->element[element].addr = hdr; 3950 buffer->element[element].length = hd_len; 3951 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3952 /* remember to free cache-allocated qeth_hdr: */ 3953 buf->is_header[element] = ((void *)hdr != skb->data); 3954 buf->next_element_to_fill++; 3955 } 3956 3957 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 3958 3959 if (!queue->do_pack) { 3960 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 3961 /* set state to PRIMED -> will be flushed */ 3962 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 3963 flush_cnt = 1; 3964 } else { 3965 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 3966 if (queue->card->options.performance_stats) 3967 queue->card->perf_stats.skbs_sent_pack++; 3968 if (buf->next_element_to_fill >= 3969 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 3970 /* 3971 * packed buffer if full -> set state PRIMED 3972 * -> will be flushed 3973 */ 3974 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 3975 flush_cnt = 1; 3976 } 3977 } 3978 return flush_cnt; 3979 } 3980 3981 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 3982 struct qeth_hdr *hdr, unsigned int offset, 3983 unsigned int hd_len) 3984 { 3985 int index = queue->next_buf_to_fill; 3986 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 3987 3988 /* 3989 * check if buffer is empty to make sure that we do not 'overtake' 3990 * ourselves and try to fill a buffer that is already primed 3991 */ 3992 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 3993 return -EBUSY; 3994 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 3995 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 3996 qeth_flush_buffers(queue, index, 1); 3997 return 0; 3998 } 3999 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4000 4001 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4002 struct sk_buff *skb, struct qeth_hdr *hdr, 4003 unsigned int offset, unsigned int hd_len, 4004 int elements_needed) 4005 { 4006 struct qeth_qdio_out_buffer *buffer; 4007 int start_index; 4008 int flush_count = 0; 4009 int do_pack = 0; 4010 int tmp; 4011 int rc = 0; 4012 4013 /* spin until we get the queue ... */ 4014 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4015 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4016 start_index = queue->next_buf_to_fill; 4017 buffer = queue->bufs[queue->next_buf_to_fill]; 4018 /* 4019 * check if buffer is empty to make sure that we do not 'overtake' 4020 * ourselves and try to fill a buffer that is already primed 4021 */ 4022 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4023 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4024 return -EBUSY; 4025 } 4026 /* check if we need to switch packing state of this queue */ 4027 qeth_switch_to_packing_if_needed(queue); 4028 if (queue->do_pack) { 4029 do_pack = 1; 4030 /* does packet fit in current buffer? */ 4031 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4032 buffer->next_element_to_fill) < elements_needed) { 4033 /* ... no -> set state PRIMED */ 4034 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4035 flush_count++; 4036 queue->next_buf_to_fill = 4037 (queue->next_buf_to_fill + 1) % 4038 QDIO_MAX_BUFFERS_PER_Q; 4039 buffer = queue->bufs[queue->next_buf_to_fill]; 4040 /* we did a step forward, so check buffer state 4041 * again */ 4042 if (atomic_read(&buffer->state) != 4043 QETH_QDIO_BUF_EMPTY) { 4044 qeth_flush_buffers(queue, start_index, 4045 flush_count); 4046 atomic_set(&queue->state, 4047 QETH_OUT_Q_UNLOCKED); 4048 rc = -EBUSY; 4049 goto out; 4050 } 4051 } 4052 } 4053 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4054 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4055 QDIO_MAX_BUFFERS_PER_Q; 4056 flush_count += tmp; 4057 if (flush_count) 4058 qeth_flush_buffers(queue, start_index, flush_count); 4059 else if (!atomic_read(&queue->set_pci_flags_count)) 4060 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4061 /* 4062 * queue->state will go from LOCKED -> UNLOCKED or from 4063 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4064 * (switch packing state or flush buffer to get another pci flag out). 4065 * In that case we will enter this loop 4066 */ 4067 while (atomic_dec_return(&queue->state)) { 4068 start_index = queue->next_buf_to_fill; 4069 /* check if we can go back to non-packing state */ 4070 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4071 /* 4072 * check if we need to flush a packing buffer to get a pci 4073 * flag out on the queue 4074 */ 4075 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4076 tmp = qeth_prep_flush_pack_buffer(queue); 4077 if (tmp) { 4078 qeth_flush_buffers(queue, start_index, tmp); 4079 flush_count += tmp; 4080 } 4081 } 4082 out: 4083 /* at this point the queue is UNLOCKED again */ 4084 if (queue->card->options.performance_stats && do_pack) 4085 queue->card->perf_stats.bufs_sent_pack += flush_count; 4086 4087 return rc; 4088 } 4089 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4090 4091 void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr, unsigned int payload_len, 4092 struct sk_buff *skb, unsigned int proto_len) 4093 { 4094 struct qeth_hdr_ext_tso *ext = &hdr->ext; 4095 4096 ext->hdr_tot_len = sizeof(*ext); 4097 ext->imb_hdr_no = 1; 4098 ext->hdr_type = 1; 4099 ext->hdr_version = 1; 4100 ext->hdr_len = 28; 4101 ext->payload_len = payload_len; 4102 ext->mss = skb_shinfo(skb)->gso_size; 4103 ext->dg_hdr_len = proto_len; 4104 } 4105 EXPORT_SYMBOL_GPL(qeth_fill_tso_ext); 4106 4107 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 4108 struct qeth_qdio_out_q *queue, int ipv, int cast_type, 4109 void (*fill_header)(struct qeth_card *card, struct qeth_hdr *hdr, 4110 struct sk_buff *skb, int ipv, int cast_type, 4111 unsigned int data_len)) 4112 { 4113 unsigned int proto_len, hw_hdr_len; 4114 unsigned int frame_len = skb->len; 4115 bool is_tso = skb_is_gso(skb); 4116 unsigned int data_offset = 0; 4117 struct qeth_hdr *hdr = NULL; 4118 unsigned int hd_len = 0; 4119 unsigned int elements; 4120 int push_len, rc; 4121 bool is_sg; 4122 4123 if (is_tso) { 4124 hw_hdr_len = sizeof(struct qeth_hdr_tso); 4125 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 4126 } else { 4127 hw_hdr_len = sizeof(struct qeth_hdr); 4128 proto_len = IS_IQD(card) ? ETH_HLEN : 0; 4129 } 4130 4131 rc = skb_cow_head(skb, hw_hdr_len); 4132 if (rc) 4133 return rc; 4134 4135 push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, proto_len, 4136 &elements); 4137 if (push_len < 0) 4138 return push_len; 4139 if (is_tso || !push_len) { 4140 /* HW header needs its own buffer element. */ 4141 hd_len = hw_hdr_len + proto_len; 4142 data_offset = push_len + proto_len; 4143 } 4144 memset(hdr, 0, hw_hdr_len); 4145 fill_header(card, hdr, skb, ipv, cast_type, frame_len); 4146 if (is_tso) 4147 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr, 4148 frame_len - proto_len, skb, proto_len); 4149 4150 is_sg = skb_is_nonlinear(skb); 4151 if (IS_IQD(card)) { 4152 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 4153 hd_len); 4154 } else { 4155 /* TODO: drop skb_orphan() once TX completion is fast enough */ 4156 skb_orphan(skb); 4157 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset, 4158 hd_len, elements); 4159 } 4160 4161 if (!rc) { 4162 if (card->options.performance_stats) { 4163 card->perf_stats.buf_elements_sent += elements; 4164 if (is_sg) 4165 card->perf_stats.sg_skbs_sent++; 4166 if (is_tso) { 4167 card->perf_stats.large_send_bytes += frame_len; 4168 card->perf_stats.large_send_cnt++; 4169 } 4170 } 4171 } else { 4172 if (!push_len) 4173 kmem_cache_free(qeth_core_header_cache, hdr); 4174 if (rc == -EBUSY) 4175 /* roll back to ETH header */ 4176 skb_pull(skb, push_len); 4177 } 4178 return rc; 4179 } 4180 EXPORT_SYMBOL_GPL(qeth_xmit); 4181 4182 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4183 struct qeth_reply *reply, unsigned long data) 4184 { 4185 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4186 struct qeth_ipacmd_setadpparms *setparms; 4187 4188 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4189 4190 setparms = &(cmd->data.setadapterparms); 4191 if (qeth_setadpparms_inspect_rc(cmd)) { 4192 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4193 setparms->data.mode = SET_PROMISC_MODE_OFF; 4194 } 4195 card->info.promisc_mode = setparms->data.mode; 4196 return 0; 4197 } 4198 4199 void qeth_setadp_promisc_mode(struct qeth_card *card) 4200 { 4201 enum qeth_ipa_promisc_modes mode; 4202 struct net_device *dev = card->dev; 4203 struct qeth_cmd_buffer *iob; 4204 struct qeth_ipa_cmd *cmd; 4205 4206 QETH_CARD_TEXT(card, 4, "setprom"); 4207 4208 if (((dev->flags & IFF_PROMISC) && 4209 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4210 (!(dev->flags & IFF_PROMISC) && 4211 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4212 return; 4213 mode = SET_PROMISC_MODE_OFF; 4214 if (dev->flags & IFF_PROMISC) 4215 mode = SET_PROMISC_MODE_ON; 4216 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4217 4218 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4219 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4220 if (!iob) 4221 return; 4222 cmd = __ipa_cmd(iob); 4223 cmd->data.setadapterparms.data.mode = mode; 4224 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4225 } 4226 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4227 4228 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4229 { 4230 struct qeth_card *card; 4231 4232 card = dev->ml_priv; 4233 4234 QETH_CARD_TEXT(card, 5, "getstat"); 4235 4236 return &card->stats; 4237 } 4238 EXPORT_SYMBOL_GPL(qeth_get_stats); 4239 4240 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4241 struct qeth_reply *reply, unsigned long data) 4242 { 4243 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4244 4245 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4246 if (qeth_setadpparms_inspect_rc(cmd)) 4247 return 0; 4248 4249 if (IS_LAYER3(card) || !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4250 ether_addr_copy(card->dev->dev_addr, 4251 cmd->data.setadapterparms.data.change_addr.addr); 4252 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4253 } 4254 return 0; 4255 } 4256 4257 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4258 { 4259 int rc; 4260 struct qeth_cmd_buffer *iob; 4261 struct qeth_ipa_cmd *cmd; 4262 4263 QETH_CARD_TEXT(card, 4, "chgmac"); 4264 4265 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4266 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4267 sizeof(struct qeth_change_addr)); 4268 if (!iob) 4269 return -ENOMEM; 4270 cmd = __ipa_cmd(iob); 4271 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4272 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4273 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4274 card->dev->dev_addr); 4275 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4276 NULL); 4277 return rc; 4278 } 4279 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4280 4281 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4282 struct qeth_reply *reply, unsigned long data) 4283 { 4284 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4285 struct qeth_set_access_ctrl *access_ctrl_req; 4286 int fallback = *(int *)reply->param; 4287 4288 QETH_CARD_TEXT(card, 4, "setaccb"); 4289 if (cmd->hdr.return_code) 4290 return 0; 4291 qeth_setadpparms_inspect_rc(cmd); 4292 4293 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4294 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4295 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4296 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4297 cmd->data.setadapterparms.hdr.return_code); 4298 if (cmd->data.setadapterparms.hdr.return_code != 4299 SET_ACCESS_CTRL_RC_SUCCESS) 4300 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4301 card->gdev->dev.kobj.name, 4302 access_ctrl_req->subcmd_code, 4303 cmd->data.setadapterparms.hdr.return_code); 4304 switch (cmd->data.setadapterparms.hdr.return_code) { 4305 case SET_ACCESS_CTRL_RC_SUCCESS: 4306 if (card->options.isolation == ISOLATION_MODE_NONE) { 4307 dev_info(&card->gdev->dev, 4308 "QDIO data connection isolation is deactivated\n"); 4309 } else { 4310 dev_info(&card->gdev->dev, 4311 "QDIO data connection isolation is activated\n"); 4312 } 4313 break; 4314 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4315 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4316 "deactivated\n", dev_name(&card->gdev->dev)); 4317 if (fallback) 4318 card->options.isolation = card->options.prev_isolation; 4319 break; 4320 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4321 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4322 " activated\n", dev_name(&card->gdev->dev)); 4323 if (fallback) 4324 card->options.isolation = card->options.prev_isolation; 4325 break; 4326 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4327 dev_err(&card->gdev->dev, "Adapter does not " 4328 "support QDIO data connection isolation\n"); 4329 break; 4330 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4331 dev_err(&card->gdev->dev, 4332 "Adapter is dedicated. " 4333 "QDIO data connection isolation not supported\n"); 4334 if (fallback) 4335 card->options.isolation = card->options.prev_isolation; 4336 break; 4337 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4338 dev_err(&card->gdev->dev, 4339 "TSO does not permit QDIO data connection isolation\n"); 4340 if (fallback) 4341 card->options.isolation = card->options.prev_isolation; 4342 break; 4343 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4344 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4345 "support reflective relay mode\n"); 4346 if (fallback) 4347 card->options.isolation = card->options.prev_isolation; 4348 break; 4349 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4350 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4351 "enabled at the adjacent switch port"); 4352 if (fallback) 4353 card->options.isolation = card->options.prev_isolation; 4354 break; 4355 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4356 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4357 "at the adjacent switch failed\n"); 4358 break; 4359 default: 4360 /* this should never happen */ 4361 if (fallback) 4362 card->options.isolation = card->options.prev_isolation; 4363 break; 4364 } 4365 return 0; 4366 } 4367 4368 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4369 enum qeth_ipa_isolation_modes isolation, int fallback) 4370 { 4371 int rc; 4372 struct qeth_cmd_buffer *iob; 4373 struct qeth_ipa_cmd *cmd; 4374 struct qeth_set_access_ctrl *access_ctrl_req; 4375 4376 QETH_CARD_TEXT(card, 4, "setacctl"); 4377 4378 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4379 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4380 4381 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4382 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4383 sizeof(struct qeth_set_access_ctrl)); 4384 if (!iob) 4385 return -ENOMEM; 4386 cmd = __ipa_cmd(iob); 4387 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4388 access_ctrl_req->subcmd_code = isolation; 4389 4390 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4391 &fallback); 4392 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4393 return rc; 4394 } 4395 4396 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4397 { 4398 int rc = 0; 4399 4400 QETH_CARD_TEXT(card, 4, "setactlo"); 4401 4402 if ((card->info.type == QETH_CARD_TYPE_OSD || 4403 card->info.type == QETH_CARD_TYPE_OSX) && 4404 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4405 rc = qeth_setadpparms_set_access_ctrl(card, 4406 card->options.isolation, fallback); 4407 if (rc) { 4408 QETH_DBF_MESSAGE(3, 4409 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4410 card->gdev->dev.kobj.name, 4411 rc); 4412 rc = -EOPNOTSUPP; 4413 } 4414 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4415 card->options.isolation = ISOLATION_MODE_NONE; 4416 4417 dev_err(&card->gdev->dev, "Adapter does not " 4418 "support QDIO data connection isolation\n"); 4419 rc = -EOPNOTSUPP; 4420 } 4421 return rc; 4422 } 4423 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4424 4425 void qeth_tx_timeout(struct net_device *dev) 4426 { 4427 struct qeth_card *card; 4428 4429 card = dev->ml_priv; 4430 QETH_CARD_TEXT(card, 4, "txtimeo"); 4431 card->stats.tx_errors++; 4432 qeth_schedule_recovery(card); 4433 } 4434 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4435 4436 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4437 { 4438 struct qeth_card *card = dev->ml_priv; 4439 int rc = 0; 4440 4441 switch (regnum) { 4442 case MII_BMCR: /* Basic mode control register */ 4443 rc = BMCR_FULLDPLX; 4444 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4445 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4446 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4447 rc |= BMCR_SPEED100; 4448 break; 4449 case MII_BMSR: /* Basic mode status register */ 4450 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4451 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4452 BMSR_100BASE4; 4453 break; 4454 case MII_PHYSID1: /* PHYS ID 1 */ 4455 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4456 dev->dev_addr[2]; 4457 rc = (rc >> 5) & 0xFFFF; 4458 break; 4459 case MII_PHYSID2: /* PHYS ID 2 */ 4460 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4461 break; 4462 case MII_ADVERTISE: /* Advertisement control reg */ 4463 rc = ADVERTISE_ALL; 4464 break; 4465 case MII_LPA: /* Link partner ability reg */ 4466 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4467 LPA_100BASE4 | LPA_LPACK; 4468 break; 4469 case MII_EXPANSION: /* Expansion register */ 4470 break; 4471 case MII_DCOUNTER: /* disconnect counter */ 4472 break; 4473 case MII_FCSCOUNTER: /* false carrier counter */ 4474 break; 4475 case MII_NWAYTEST: /* N-way auto-neg test register */ 4476 break; 4477 case MII_RERRCOUNTER: /* rx error counter */ 4478 rc = card->stats.rx_errors; 4479 break; 4480 case MII_SREVISION: /* silicon revision */ 4481 break; 4482 case MII_RESV1: /* reserved 1 */ 4483 break; 4484 case MII_LBRERROR: /* loopback, rx, bypass error */ 4485 break; 4486 case MII_PHYADDR: /* physical address */ 4487 break; 4488 case MII_RESV2: /* reserved 2 */ 4489 break; 4490 case MII_TPISTATUS: /* TPI status for 10mbps */ 4491 break; 4492 case MII_NCONFIG: /* network interface config */ 4493 break; 4494 default: 4495 break; 4496 } 4497 return rc; 4498 } 4499 4500 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4501 struct qeth_cmd_buffer *iob, int len, 4502 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4503 unsigned long), 4504 void *reply_param) 4505 { 4506 u16 s1, s2; 4507 4508 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4509 4510 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4511 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4512 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4513 /* adjust PDU length fields in IPA_PDU_HEADER */ 4514 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4515 s2 = (u32) len; 4516 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4517 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4518 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4519 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4520 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4521 reply_cb, reply_param); 4522 } 4523 4524 static int qeth_snmp_command_cb(struct qeth_card *card, 4525 struct qeth_reply *reply, unsigned long sdata) 4526 { 4527 struct qeth_ipa_cmd *cmd; 4528 struct qeth_arp_query_info *qinfo; 4529 struct qeth_snmp_cmd *snmp; 4530 unsigned char *data; 4531 __u16 data_len; 4532 4533 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4534 4535 cmd = (struct qeth_ipa_cmd *) sdata; 4536 data = (unsigned char *)((char *)cmd - reply->offset); 4537 qinfo = (struct qeth_arp_query_info *) reply->param; 4538 snmp = &cmd->data.setadapterparms.data.snmp; 4539 4540 if (cmd->hdr.return_code) { 4541 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4542 return 0; 4543 } 4544 if (cmd->data.setadapterparms.hdr.return_code) { 4545 cmd->hdr.return_code = 4546 cmd->data.setadapterparms.hdr.return_code; 4547 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4548 return 0; 4549 } 4550 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4551 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4552 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4553 else 4554 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4555 4556 /* check if there is enough room in userspace */ 4557 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4558 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4559 cmd->hdr.return_code = IPA_RC_ENOMEM; 4560 return 0; 4561 } 4562 QETH_CARD_TEXT_(card, 4, "snore%i", 4563 cmd->data.setadapterparms.hdr.used_total); 4564 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4565 cmd->data.setadapterparms.hdr.seq_no); 4566 /*copy entries to user buffer*/ 4567 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4568 memcpy(qinfo->udata + qinfo->udata_offset, 4569 (char *)snmp, 4570 data_len + offsetof(struct qeth_snmp_cmd, data)); 4571 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4572 } else { 4573 memcpy(qinfo->udata + qinfo->udata_offset, 4574 (char *)&snmp->request, data_len); 4575 } 4576 qinfo->udata_offset += data_len; 4577 /* check if all replies received ... */ 4578 QETH_CARD_TEXT_(card, 4, "srtot%i", 4579 cmd->data.setadapterparms.hdr.used_total); 4580 QETH_CARD_TEXT_(card, 4, "srseq%i", 4581 cmd->data.setadapterparms.hdr.seq_no); 4582 if (cmd->data.setadapterparms.hdr.seq_no < 4583 cmd->data.setadapterparms.hdr.used_total) 4584 return 1; 4585 return 0; 4586 } 4587 4588 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4589 { 4590 struct qeth_cmd_buffer *iob; 4591 struct qeth_ipa_cmd *cmd; 4592 struct qeth_snmp_ureq *ureq; 4593 unsigned int req_len; 4594 struct qeth_arp_query_info qinfo = {0, }; 4595 int rc = 0; 4596 4597 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4598 4599 if (card->info.guestlan) 4600 return -EOPNOTSUPP; 4601 4602 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4603 IS_LAYER3(card)) 4604 return -EOPNOTSUPP; 4605 4606 /* skip 4 bytes (data_len struct member) to get req_len */ 4607 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4608 return -EFAULT; 4609 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4610 sizeof(struct qeth_ipacmd_hdr) - 4611 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4612 return -EINVAL; 4613 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4614 if (IS_ERR(ureq)) { 4615 QETH_CARD_TEXT(card, 2, "snmpnome"); 4616 return PTR_ERR(ureq); 4617 } 4618 qinfo.udata_len = ureq->hdr.data_len; 4619 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4620 if (!qinfo.udata) { 4621 kfree(ureq); 4622 return -ENOMEM; 4623 } 4624 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4625 4626 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4627 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4628 if (!iob) { 4629 rc = -ENOMEM; 4630 goto out; 4631 } 4632 cmd = __ipa_cmd(iob); 4633 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4634 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4635 qeth_snmp_command_cb, (void *)&qinfo); 4636 if (rc) 4637 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4638 QETH_CARD_IFNAME(card), rc); 4639 else { 4640 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4641 rc = -EFAULT; 4642 } 4643 out: 4644 kfree(ureq); 4645 kfree(qinfo.udata); 4646 return rc; 4647 } 4648 4649 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4650 struct qeth_reply *reply, unsigned long data) 4651 { 4652 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4653 struct qeth_qoat_priv *priv; 4654 char *resdata; 4655 int resdatalen; 4656 4657 QETH_CARD_TEXT(card, 3, "qoatcb"); 4658 if (qeth_setadpparms_inspect_rc(cmd)) 4659 return 0; 4660 4661 priv = (struct qeth_qoat_priv *)reply->param; 4662 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4663 resdata = (char *)data + 28; 4664 4665 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4666 cmd->hdr.return_code = IPA_RC_FFFF; 4667 return 0; 4668 } 4669 4670 memcpy((priv->buffer + priv->response_len), resdata, 4671 resdatalen); 4672 priv->response_len += resdatalen; 4673 4674 if (cmd->data.setadapterparms.hdr.seq_no < 4675 cmd->data.setadapterparms.hdr.used_total) 4676 return 1; 4677 return 0; 4678 } 4679 4680 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4681 { 4682 int rc = 0; 4683 struct qeth_cmd_buffer *iob; 4684 struct qeth_ipa_cmd *cmd; 4685 struct qeth_query_oat *oat_req; 4686 struct qeth_query_oat_data oat_data; 4687 struct qeth_qoat_priv priv; 4688 void __user *tmp; 4689 4690 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4691 4692 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4693 rc = -EOPNOTSUPP; 4694 goto out; 4695 } 4696 4697 if (copy_from_user(&oat_data, udata, 4698 sizeof(struct qeth_query_oat_data))) { 4699 rc = -EFAULT; 4700 goto out; 4701 } 4702 4703 priv.buffer_len = oat_data.buffer_len; 4704 priv.response_len = 0; 4705 priv.buffer = vzalloc(oat_data.buffer_len); 4706 if (!priv.buffer) { 4707 rc = -ENOMEM; 4708 goto out; 4709 } 4710 4711 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4712 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4713 sizeof(struct qeth_query_oat)); 4714 if (!iob) { 4715 rc = -ENOMEM; 4716 goto out_free; 4717 } 4718 cmd = __ipa_cmd(iob); 4719 oat_req = &cmd->data.setadapterparms.data.query_oat; 4720 oat_req->subcmd_code = oat_data.command; 4721 4722 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4723 &priv); 4724 if (!rc) { 4725 if (is_compat_task()) 4726 tmp = compat_ptr(oat_data.ptr); 4727 else 4728 tmp = (void __user *)(unsigned long)oat_data.ptr; 4729 4730 if (copy_to_user(tmp, priv.buffer, 4731 priv.response_len)) { 4732 rc = -EFAULT; 4733 goto out_free; 4734 } 4735 4736 oat_data.response_len = priv.response_len; 4737 4738 if (copy_to_user(udata, &oat_data, 4739 sizeof(struct qeth_query_oat_data))) 4740 rc = -EFAULT; 4741 } else 4742 if (rc == IPA_RC_FFFF) 4743 rc = -EFAULT; 4744 4745 out_free: 4746 vfree(priv.buffer); 4747 out: 4748 return rc; 4749 } 4750 4751 static int qeth_query_card_info_cb(struct qeth_card *card, 4752 struct qeth_reply *reply, unsigned long data) 4753 { 4754 struct carrier_info *carrier_info = (struct carrier_info *)reply->param; 4755 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4756 struct qeth_query_card_info *card_info; 4757 4758 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4759 if (qeth_setadpparms_inspect_rc(cmd)) 4760 return 0; 4761 4762 card_info = &cmd->data.setadapterparms.data.card_info; 4763 carrier_info->card_type = card_info->card_type; 4764 carrier_info->port_mode = card_info->port_mode; 4765 carrier_info->port_speed = card_info->port_speed; 4766 return 0; 4767 } 4768 4769 static int qeth_query_card_info(struct qeth_card *card, 4770 struct carrier_info *carrier_info) 4771 { 4772 struct qeth_cmd_buffer *iob; 4773 4774 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4775 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4776 return -EOPNOTSUPP; 4777 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4778 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4779 if (!iob) 4780 return -ENOMEM; 4781 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4782 (void *)carrier_info); 4783 } 4784 4785 /** 4786 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4787 * @card: pointer to a qeth_card 4788 * 4789 * Returns 4790 * 0, if a MAC address has been set for the card's netdevice 4791 * a return code, for various error conditions 4792 */ 4793 int qeth_vm_request_mac(struct qeth_card *card) 4794 { 4795 struct diag26c_mac_resp *response; 4796 struct diag26c_mac_req *request; 4797 struct ccw_dev_id id; 4798 int rc; 4799 4800 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4801 4802 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4803 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4804 if (!request || !response) { 4805 rc = -ENOMEM; 4806 goto out; 4807 } 4808 4809 ccw_device_get_id(CARD_DDEV(card), &id); 4810 request->resp_buf_len = sizeof(*response); 4811 request->resp_version = DIAG26C_VERSION2; 4812 request->op_code = DIAG26C_GET_MAC; 4813 request->devno = id.devno; 4814 4815 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4816 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4817 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4818 if (rc) 4819 goto out; 4820 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4821 4822 if (request->resp_buf_len < sizeof(*response) || 4823 response->version != request->resp_version) { 4824 rc = -EIO; 4825 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4826 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4827 sizeof(request->resp_buf_len)); 4828 } else if (!is_valid_ether_addr(response->mac)) { 4829 rc = -EINVAL; 4830 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4831 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4832 } else { 4833 ether_addr_copy(card->dev->dev_addr, response->mac); 4834 } 4835 4836 out: 4837 kfree(response); 4838 kfree(request); 4839 return rc; 4840 } 4841 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4842 4843 static int qeth_get_qdio_q_format(struct qeth_card *card) 4844 { 4845 if (card->info.type == QETH_CARD_TYPE_IQD) 4846 return QDIO_IQDIO_QFMT; 4847 else 4848 return QDIO_QETH_QFMT; 4849 } 4850 4851 static void qeth_determine_capabilities(struct qeth_card *card) 4852 { 4853 int rc; 4854 int length; 4855 char *prcd; 4856 struct ccw_device *ddev; 4857 int ddev_offline = 0; 4858 4859 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4860 ddev = CARD_DDEV(card); 4861 if (!ddev->online) { 4862 ddev_offline = 1; 4863 rc = ccw_device_set_online(ddev); 4864 if (rc) { 4865 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4866 goto out; 4867 } 4868 } 4869 4870 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4871 if (rc) { 4872 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4873 dev_name(&card->gdev->dev), rc); 4874 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4875 goto out_offline; 4876 } 4877 qeth_configure_unitaddr(card, prcd); 4878 if (ddev_offline) 4879 qeth_configure_blkt_default(card, prcd); 4880 kfree(prcd); 4881 4882 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4883 if (rc) 4884 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4885 4886 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4887 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4888 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4889 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4890 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4891 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4892 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4893 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4894 dev_info(&card->gdev->dev, 4895 "Completion Queueing supported\n"); 4896 } else { 4897 card->options.cq = QETH_CQ_NOTAVAILABLE; 4898 } 4899 4900 4901 out_offline: 4902 if (ddev_offline == 1) 4903 ccw_device_set_offline(ddev); 4904 out: 4905 return; 4906 } 4907 4908 static void qeth_qdio_establish_cq(struct qeth_card *card, 4909 struct qdio_buffer **in_sbal_ptrs, 4910 void (**queue_start_poll) 4911 (struct ccw_device *, int, 4912 unsigned long)) 4913 { 4914 int i; 4915 4916 if (card->options.cq == QETH_CQ_ENABLED) { 4917 int offset = QDIO_MAX_BUFFERS_PER_Q * 4918 (card->qdio.no_in_queues - 1); 4919 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4920 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4921 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4922 } 4923 4924 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4925 } 4926 } 4927 4928 static int qeth_qdio_establish(struct qeth_card *card) 4929 { 4930 struct qdio_initialize init_data; 4931 char *qib_param_field; 4932 struct qdio_buffer **in_sbal_ptrs; 4933 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4934 struct qdio_buffer **out_sbal_ptrs; 4935 int i, j, k; 4936 int rc = 0; 4937 4938 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4939 4940 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q, 4941 GFP_KERNEL); 4942 if (!qib_param_field) { 4943 rc = -ENOMEM; 4944 goto out_free_nothing; 4945 } 4946 4947 qeth_create_qib_param_field(card, qib_param_field); 4948 qeth_create_qib_param_field_blkt(card, qib_param_field); 4949 4950 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q, 4951 sizeof(void *), 4952 GFP_KERNEL); 4953 if (!in_sbal_ptrs) { 4954 rc = -ENOMEM; 4955 goto out_free_qib_param; 4956 } 4957 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4958 in_sbal_ptrs[i] = (struct qdio_buffer *) 4959 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4960 } 4961 4962 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), 4963 GFP_KERNEL); 4964 if (!queue_start_poll) { 4965 rc = -ENOMEM; 4966 goto out_free_in_sbals; 4967 } 4968 for (i = 0; i < card->qdio.no_in_queues; ++i) 4969 queue_start_poll[i] = qeth_qdio_start_poll; 4970 4971 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4972 4973 out_sbal_ptrs = 4974 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q, 4975 sizeof(void *), 4976 GFP_KERNEL); 4977 if (!out_sbal_ptrs) { 4978 rc = -ENOMEM; 4979 goto out_free_queue_start_poll; 4980 } 4981 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4982 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4983 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4984 card->qdio.out_qs[i]->bufs[j]->buffer); 4985 } 4986 4987 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4988 init_data.cdev = CARD_DDEV(card); 4989 init_data.q_format = qeth_get_qdio_q_format(card); 4990 init_data.qib_param_field_format = 0; 4991 init_data.qib_param_field = qib_param_field; 4992 init_data.no_input_qs = card->qdio.no_in_queues; 4993 init_data.no_output_qs = card->qdio.no_out_queues; 4994 init_data.input_handler = qeth_qdio_input_handler; 4995 init_data.output_handler = qeth_qdio_output_handler; 4996 init_data.queue_start_poll_array = queue_start_poll; 4997 init_data.int_parm = (unsigned long) card; 4998 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4999 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 5000 init_data.output_sbal_state_array = card->qdio.out_bufstates; 5001 init_data.scan_threshold = 5002 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 5003 5004 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 5005 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 5006 rc = qdio_allocate(&init_data); 5007 if (rc) { 5008 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5009 goto out; 5010 } 5011 rc = qdio_establish(&init_data); 5012 if (rc) { 5013 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5014 qdio_free(CARD_DDEV(card)); 5015 } 5016 } 5017 5018 switch (card->options.cq) { 5019 case QETH_CQ_ENABLED: 5020 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5021 break; 5022 case QETH_CQ_DISABLED: 5023 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5024 break; 5025 default: 5026 break; 5027 } 5028 out: 5029 kfree(out_sbal_ptrs); 5030 out_free_queue_start_poll: 5031 kfree(queue_start_poll); 5032 out_free_in_sbals: 5033 kfree(in_sbal_ptrs); 5034 out_free_qib_param: 5035 kfree(qib_param_field); 5036 out_free_nothing: 5037 return rc; 5038 } 5039 5040 static void qeth_core_free_card(struct qeth_card *card) 5041 { 5042 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5043 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5044 qeth_clean_channel(&card->read); 5045 qeth_clean_channel(&card->write); 5046 qeth_clean_channel(&card->data); 5047 qeth_free_qdio_buffers(card); 5048 unregister_service_level(&card->qeth_service_level); 5049 dev_set_drvdata(&card->gdev->dev, NULL); 5050 kfree(card); 5051 } 5052 5053 void qeth_trace_features(struct qeth_card *card) 5054 { 5055 QETH_CARD_TEXT(card, 2, "features"); 5056 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5057 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5058 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5059 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5060 sizeof(card->info.diagass_support)); 5061 } 5062 EXPORT_SYMBOL_GPL(qeth_trace_features); 5063 5064 static struct ccw_device_id qeth_ids[] = { 5065 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5066 .driver_info = QETH_CARD_TYPE_OSD}, 5067 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5068 .driver_info = QETH_CARD_TYPE_IQD}, 5069 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5070 .driver_info = QETH_CARD_TYPE_OSN}, 5071 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5072 .driver_info = QETH_CARD_TYPE_OSM}, 5073 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5074 .driver_info = QETH_CARD_TYPE_OSX}, 5075 {}, 5076 }; 5077 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5078 5079 static struct ccw_driver qeth_ccw_driver = { 5080 .driver = { 5081 .owner = THIS_MODULE, 5082 .name = "qeth", 5083 }, 5084 .ids = qeth_ids, 5085 .probe = ccwgroup_probe_ccwdev, 5086 .remove = ccwgroup_remove_ccwdev, 5087 }; 5088 5089 int qeth_core_hardsetup_card(struct qeth_card *card) 5090 { 5091 int retries = 3; 5092 int rc; 5093 5094 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5095 atomic_set(&card->force_alloc_skb, 0); 5096 qeth_update_from_chp_desc(card); 5097 retry: 5098 if (retries < 3) 5099 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5100 dev_name(&card->gdev->dev)); 5101 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5102 ccw_device_set_offline(CARD_DDEV(card)); 5103 ccw_device_set_offline(CARD_WDEV(card)); 5104 ccw_device_set_offline(CARD_RDEV(card)); 5105 qdio_free(CARD_DDEV(card)); 5106 rc = ccw_device_set_online(CARD_RDEV(card)); 5107 if (rc) 5108 goto retriable; 5109 rc = ccw_device_set_online(CARD_WDEV(card)); 5110 if (rc) 5111 goto retriable; 5112 rc = ccw_device_set_online(CARD_DDEV(card)); 5113 if (rc) 5114 goto retriable; 5115 retriable: 5116 if (rc == -ERESTARTSYS) { 5117 QETH_DBF_TEXT(SETUP, 2, "break1"); 5118 return rc; 5119 } else if (rc) { 5120 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5121 if (--retries < 0) 5122 goto out; 5123 else 5124 goto retry; 5125 } 5126 qeth_determine_capabilities(card); 5127 qeth_init_tokens(card); 5128 qeth_init_func_level(card); 5129 rc = qeth_idx_activate_channel(card, &card->read, qeth_idx_read_cb); 5130 if (rc == -ERESTARTSYS) { 5131 QETH_DBF_TEXT(SETUP, 2, "break2"); 5132 return rc; 5133 } else if (rc) { 5134 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5135 if (--retries < 0) 5136 goto out; 5137 else 5138 goto retry; 5139 } 5140 rc = qeth_idx_activate_channel(card, &card->write, qeth_idx_write_cb); 5141 if (rc == -ERESTARTSYS) { 5142 QETH_DBF_TEXT(SETUP, 2, "break3"); 5143 return rc; 5144 } else if (rc) { 5145 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5146 if (--retries < 0) 5147 goto out; 5148 else 5149 goto retry; 5150 } 5151 card->read_or_write_problem = 0; 5152 rc = qeth_mpc_initialize(card); 5153 if (rc) { 5154 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5155 goto out; 5156 } 5157 5158 rc = qeth_send_startlan(card); 5159 if (rc) { 5160 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5161 if (rc == IPA_RC_LAN_OFFLINE) { 5162 dev_warn(&card->gdev->dev, 5163 "The LAN is offline\n"); 5164 netif_carrier_off(card->dev); 5165 } else { 5166 rc = -ENODEV; 5167 goto out; 5168 } 5169 } else { 5170 netif_carrier_on(card->dev); 5171 } 5172 5173 card->options.ipa4.supported_funcs = 0; 5174 card->options.ipa6.supported_funcs = 0; 5175 card->options.adp.supported_funcs = 0; 5176 card->options.sbp.supported_funcs = 0; 5177 card->info.diagass_support = 0; 5178 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5179 if (rc == -ENOMEM) 5180 goto out; 5181 if (qeth_is_supported(card, IPA_IPV6)) { 5182 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 5183 if (rc == -ENOMEM) 5184 goto out; 5185 } 5186 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5187 rc = qeth_query_setadapterparms(card); 5188 if (rc < 0) { 5189 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5190 goto out; 5191 } 5192 } 5193 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5194 rc = qeth_query_setdiagass(card); 5195 if (rc < 0) { 5196 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5197 goto out; 5198 } 5199 } 5200 return 0; 5201 out: 5202 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5203 "an error on the device\n"); 5204 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5205 dev_name(&card->gdev->dev), rc); 5206 return rc; 5207 } 5208 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5209 5210 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5211 struct sk_buff *skb, int offset, int data_len) 5212 { 5213 struct page *page = virt_to_page(element->addr); 5214 unsigned int next_frag; 5215 5216 /* first fill the linear space */ 5217 if (!skb->len) { 5218 unsigned int linear = min(data_len, skb_tailroom(skb)); 5219 5220 skb_put_data(skb, element->addr + offset, linear); 5221 data_len -= linear; 5222 if (!data_len) 5223 return; 5224 offset += linear; 5225 /* fall through to add page frag for remaining data */ 5226 } 5227 5228 next_frag = skb_shinfo(skb)->nr_frags; 5229 get_page(page); 5230 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5231 } 5232 5233 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5234 { 5235 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5236 } 5237 5238 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5239 struct qeth_qdio_buffer *qethbuffer, 5240 struct qdio_buffer_element **__element, int *__offset, 5241 struct qeth_hdr **hdr) 5242 { 5243 struct qdio_buffer_element *element = *__element; 5244 struct qdio_buffer *buffer = qethbuffer->buffer; 5245 int offset = *__offset; 5246 struct sk_buff *skb; 5247 int skb_len = 0; 5248 void *data_ptr; 5249 int data_len; 5250 int headroom = 0; 5251 int use_rx_sg = 0; 5252 5253 /* qeth_hdr must not cross element boundaries */ 5254 while (element->length < offset + sizeof(struct qeth_hdr)) { 5255 if (qeth_is_last_sbale(element)) 5256 return NULL; 5257 element++; 5258 offset = 0; 5259 } 5260 *hdr = element->addr + offset; 5261 5262 offset += sizeof(struct qeth_hdr); 5263 switch ((*hdr)->hdr.l2.id) { 5264 case QETH_HEADER_TYPE_LAYER2: 5265 skb_len = (*hdr)->hdr.l2.pkt_length; 5266 break; 5267 case QETH_HEADER_TYPE_LAYER3: 5268 skb_len = (*hdr)->hdr.l3.length; 5269 headroom = ETH_HLEN; 5270 break; 5271 case QETH_HEADER_TYPE_OSN: 5272 skb_len = (*hdr)->hdr.osn.pdu_length; 5273 headroom = sizeof(struct qeth_hdr); 5274 break; 5275 default: 5276 break; 5277 } 5278 5279 if (!skb_len) 5280 return NULL; 5281 5282 if (((skb_len >= card->options.rx_sg_cb) && 5283 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5284 (!atomic_read(&card->force_alloc_skb))) || 5285 (card->options.cq == QETH_CQ_ENABLED)) 5286 use_rx_sg = 1; 5287 5288 if (use_rx_sg && qethbuffer->rx_skb) { 5289 /* QETH_CQ_ENABLED only: */ 5290 skb = qethbuffer->rx_skb; 5291 qethbuffer->rx_skb = NULL; 5292 } else { 5293 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5294 5295 skb = napi_alloc_skb(&card->napi, linear + headroom); 5296 } 5297 if (!skb) 5298 goto no_mem; 5299 if (headroom) 5300 skb_reserve(skb, headroom); 5301 5302 data_ptr = element->addr + offset; 5303 while (skb_len) { 5304 data_len = min(skb_len, (int)(element->length - offset)); 5305 if (data_len) { 5306 if (use_rx_sg) 5307 qeth_create_skb_frag(element, skb, offset, 5308 data_len); 5309 else 5310 skb_put_data(skb, data_ptr, data_len); 5311 } 5312 skb_len -= data_len; 5313 if (skb_len) { 5314 if (qeth_is_last_sbale(element)) { 5315 QETH_CARD_TEXT(card, 4, "unexeob"); 5316 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5317 dev_kfree_skb_any(skb); 5318 card->stats.rx_errors++; 5319 return NULL; 5320 } 5321 element++; 5322 offset = 0; 5323 data_ptr = element->addr; 5324 } else { 5325 offset += data_len; 5326 } 5327 } 5328 *__element = element; 5329 *__offset = offset; 5330 if (use_rx_sg && card->options.performance_stats) { 5331 card->perf_stats.sg_skbs_rx++; 5332 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5333 } 5334 return skb; 5335 no_mem: 5336 if (net_ratelimit()) { 5337 QETH_CARD_TEXT(card, 2, "noskbmem"); 5338 } 5339 card->stats.rx_dropped++; 5340 return NULL; 5341 } 5342 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5343 5344 int qeth_poll(struct napi_struct *napi, int budget) 5345 { 5346 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5347 int work_done = 0; 5348 struct qeth_qdio_buffer *buffer; 5349 int done; 5350 int new_budget = budget; 5351 5352 if (card->options.performance_stats) { 5353 card->perf_stats.inbound_cnt++; 5354 card->perf_stats.inbound_start_time = qeth_get_micros(); 5355 } 5356 5357 while (1) { 5358 if (!card->rx.b_count) { 5359 card->rx.qdio_err = 0; 5360 card->rx.b_count = qdio_get_next_buffers( 5361 card->data.ccwdev, 0, &card->rx.b_index, 5362 &card->rx.qdio_err); 5363 if (card->rx.b_count <= 0) { 5364 card->rx.b_count = 0; 5365 break; 5366 } 5367 card->rx.b_element = 5368 &card->qdio.in_q->bufs[card->rx.b_index] 5369 .buffer->element[0]; 5370 card->rx.e_offset = 0; 5371 } 5372 5373 while (card->rx.b_count) { 5374 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5375 if (!(card->rx.qdio_err && 5376 qeth_check_qdio_errors(card, buffer->buffer, 5377 card->rx.qdio_err, "qinerr"))) 5378 work_done += 5379 card->discipline->process_rx_buffer( 5380 card, new_budget, &done); 5381 else 5382 done = 1; 5383 5384 if (done) { 5385 if (card->options.performance_stats) 5386 card->perf_stats.bufs_rec++; 5387 qeth_put_buffer_pool_entry(card, 5388 buffer->pool_entry); 5389 qeth_queue_input_buffer(card, card->rx.b_index); 5390 card->rx.b_count--; 5391 if (card->rx.b_count) { 5392 card->rx.b_index = 5393 (card->rx.b_index + 1) % 5394 QDIO_MAX_BUFFERS_PER_Q; 5395 card->rx.b_element = 5396 &card->qdio.in_q 5397 ->bufs[card->rx.b_index] 5398 .buffer->element[0]; 5399 card->rx.e_offset = 0; 5400 } 5401 } 5402 5403 if (work_done >= budget) 5404 goto out; 5405 else 5406 new_budget = budget - work_done; 5407 } 5408 } 5409 5410 napi_complete_done(napi, work_done); 5411 if (qdio_start_irq(card->data.ccwdev, 0)) 5412 napi_schedule(&card->napi); 5413 out: 5414 if (card->options.performance_stats) 5415 card->perf_stats.inbound_time += qeth_get_micros() - 5416 card->perf_stats.inbound_start_time; 5417 return work_done; 5418 } 5419 EXPORT_SYMBOL_GPL(qeth_poll); 5420 5421 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5422 { 5423 if (!cmd->hdr.return_code) 5424 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5425 return cmd->hdr.return_code; 5426 } 5427 5428 static int qeth_setassparms_get_caps_cb(struct qeth_card *card, 5429 struct qeth_reply *reply, 5430 unsigned long data) 5431 { 5432 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5433 struct qeth_ipa_caps *caps = reply->param; 5434 5435 if (qeth_setassparms_inspect_rc(cmd)) 5436 return 0; 5437 5438 caps->supported = cmd->data.setassparms.data.caps.supported; 5439 caps->enabled = cmd->data.setassparms.data.caps.enabled; 5440 return 0; 5441 } 5442 5443 int qeth_setassparms_cb(struct qeth_card *card, 5444 struct qeth_reply *reply, unsigned long data) 5445 { 5446 struct qeth_ipa_cmd *cmd; 5447 5448 QETH_CARD_TEXT(card, 4, "defadpcb"); 5449 5450 cmd = (struct qeth_ipa_cmd *) data; 5451 if (cmd->hdr.return_code == 0) { 5452 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5453 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5454 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5455 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5456 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5457 } 5458 return 0; 5459 } 5460 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5461 5462 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5463 enum qeth_ipa_funcs ipa_func, 5464 __u16 cmd_code, __u16 len, 5465 enum qeth_prot_versions prot) 5466 { 5467 struct qeth_cmd_buffer *iob; 5468 struct qeth_ipa_cmd *cmd; 5469 5470 QETH_CARD_TEXT(card, 4, "getasscm"); 5471 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5472 5473 if (iob) { 5474 cmd = __ipa_cmd(iob); 5475 cmd->data.setassparms.hdr.assist_no = ipa_func; 5476 cmd->data.setassparms.hdr.length = 8 + len; 5477 cmd->data.setassparms.hdr.command_code = cmd_code; 5478 } 5479 5480 return iob; 5481 } 5482 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5483 5484 int qeth_send_setassparms(struct qeth_card *card, 5485 struct qeth_cmd_buffer *iob, __u16 len, long data, 5486 int (*reply_cb)(struct qeth_card *, 5487 struct qeth_reply *, unsigned long), 5488 void *reply_param) 5489 { 5490 int rc; 5491 struct qeth_ipa_cmd *cmd; 5492 5493 QETH_CARD_TEXT(card, 4, "sendassp"); 5494 5495 cmd = __ipa_cmd(iob); 5496 if (len <= sizeof(__u32)) 5497 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5498 else /* (len > sizeof(__u32)) */ 5499 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5500 5501 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5502 return rc; 5503 } 5504 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5505 5506 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 5507 enum qeth_ipa_funcs ipa_func, 5508 u16 cmd_code, long data, 5509 enum qeth_prot_versions prot) 5510 { 5511 int rc; 5512 int length = 0; 5513 struct qeth_cmd_buffer *iob; 5514 5515 QETH_CARD_TEXT_(card, 4, "simassp%i", prot); 5516 if (data) 5517 length = sizeof(__u32); 5518 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); 5519 if (!iob) 5520 return -ENOMEM; 5521 rc = qeth_send_setassparms(card, iob, length, data, 5522 qeth_setassparms_cb, NULL); 5523 return rc; 5524 } 5525 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 5526 5527 static void qeth_unregister_dbf_views(void) 5528 { 5529 int x; 5530 for (x = 0; x < QETH_DBF_INFOS; x++) { 5531 debug_unregister(qeth_dbf[x].id); 5532 qeth_dbf[x].id = NULL; 5533 } 5534 } 5535 5536 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5537 { 5538 char dbf_txt_buf[32]; 5539 va_list args; 5540 5541 if (!debug_level_enabled(id, level)) 5542 return; 5543 va_start(args, fmt); 5544 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5545 va_end(args); 5546 debug_text_event(id, level, dbf_txt_buf); 5547 } 5548 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5549 5550 static int qeth_register_dbf_views(void) 5551 { 5552 int ret; 5553 int x; 5554 5555 for (x = 0; x < QETH_DBF_INFOS; x++) { 5556 /* register the areas */ 5557 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5558 qeth_dbf[x].pages, 5559 qeth_dbf[x].areas, 5560 qeth_dbf[x].len); 5561 if (qeth_dbf[x].id == NULL) { 5562 qeth_unregister_dbf_views(); 5563 return -ENOMEM; 5564 } 5565 5566 /* register a view */ 5567 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5568 if (ret) { 5569 qeth_unregister_dbf_views(); 5570 return ret; 5571 } 5572 5573 /* set a passing level */ 5574 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5575 } 5576 5577 return 0; 5578 } 5579 5580 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */ 5581 5582 int qeth_core_load_discipline(struct qeth_card *card, 5583 enum qeth_discipline_id discipline) 5584 { 5585 mutex_lock(&qeth_mod_mutex); 5586 switch (discipline) { 5587 case QETH_DISCIPLINE_LAYER3: 5588 card->discipline = try_then_request_module( 5589 symbol_get(qeth_l3_discipline), "qeth_l3"); 5590 break; 5591 case QETH_DISCIPLINE_LAYER2: 5592 card->discipline = try_then_request_module( 5593 symbol_get(qeth_l2_discipline), "qeth_l2"); 5594 break; 5595 default: 5596 break; 5597 } 5598 mutex_unlock(&qeth_mod_mutex); 5599 5600 if (!card->discipline) { 5601 dev_err(&card->gdev->dev, "There is no kernel module to " 5602 "support discipline %d\n", discipline); 5603 return -EINVAL; 5604 } 5605 5606 card->options.layer = discipline; 5607 return 0; 5608 } 5609 5610 void qeth_core_free_discipline(struct qeth_card *card) 5611 { 5612 if (IS_LAYER2(card)) 5613 symbol_put(qeth_l2_discipline); 5614 else 5615 symbol_put(qeth_l3_discipline); 5616 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 5617 card->discipline = NULL; 5618 } 5619 5620 const struct device_type qeth_generic_devtype = { 5621 .name = "qeth_generic", 5622 .groups = qeth_generic_attr_groups, 5623 }; 5624 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5625 5626 static const struct device_type qeth_osn_devtype = { 5627 .name = "qeth_osn", 5628 .groups = qeth_osn_attr_groups, 5629 }; 5630 5631 #define DBF_NAME_LEN 20 5632 5633 struct qeth_dbf_entry { 5634 char dbf_name[DBF_NAME_LEN]; 5635 debug_info_t *dbf_info; 5636 struct list_head dbf_list; 5637 }; 5638 5639 static LIST_HEAD(qeth_dbf_list); 5640 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5641 5642 static debug_info_t *qeth_get_dbf_entry(char *name) 5643 { 5644 struct qeth_dbf_entry *entry; 5645 debug_info_t *rc = NULL; 5646 5647 mutex_lock(&qeth_dbf_list_mutex); 5648 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5649 if (strcmp(entry->dbf_name, name) == 0) { 5650 rc = entry->dbf_info; 5651 break; 5652 } 5653 } 5654 mutex_unlock(&qeth_dbf_list_mutex); 5655 return rc; 5656 } 5657 5658 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5659 { 5660 struct qeth_dbf_entry *new_entry; 5661 5662 card->debug = debug_register(name, 2, 1, 8); 5663 if (!card->debug) { 5664 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5665 goto err; 5666 } 5667 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5668 goto err_dbg; 5669 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5670 if (!new_entry) 5671 goto err_dbg; 5672 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5673 new_entry->dbf_info = card->debug; 5674 mutex_lock(&qeth_dbf_list_mutex); 5675 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5676 mutex_unlock(&qeth_dbf_list_mutex); 5677 5678 return 0; 5679 5680 err_dbg: 5681 debug_unregister(card->debug); 5682 err: 5683 return -ENOMEM; 5684 } 5685 5686 static void qeth_clear_dbf_list(void) 5687 { 5688 struct qeth_dbf_entry *entry, *tmp; 5689 5690 mutex_lock(&qeth_dbf_list_mutex); 5691 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5692 list_del(&entry->dbf_list); 5693 debug_unregister(entry->dbf_info); 5694 kfree(entry); 5695 } 5696 mutex_unlock(&qeth_dbf_list_mutex); 5697 } 5698 5699 static struct net_device *qeth_alloc_netdev(struct qeth_card *card) 5700 { 5701 struct net_device *dev; 5702 5703 switch (card->info.type) { 5704 case QETH_CARD_TYPE_IQD: 5705 dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup); 5706 break; 5707 case QETH_CARD_TYPE_OSN: 5708 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); 5709 break; 5710 default: 5711 dev = alloc_etherdev(0); 5712 } 5713 5714 if (!dev) 5715 return NULL; 5716 5717 dev->ml_priv = card; 5718 dev->watchdog_timeo = QETH_TX_TIMEOUT; 5719 dev->min_mtu = IS_OSN(card) ? 64 : 576; 5720 /* initialized when device first goes online: */ 5721 dev->max_mtu = 0; 5722 dev->mtu = 0; 5723 SET_NETDEV_DEV(dev, &card->gdev->dev); 5724 netif_carrier_off(dev); 5725 5726 if (!IS_OSN(card)) { 5727 dev->priv_flags &= ~IFF_TX_SKB_SHARING; 5728 dev->hw_features |= NETIF_F_SG; 5729 dev->vlan_features |= NETIF_F_SG; 5730 if (IS_IQD(card)) 5731 dev->features |= NETIF_F_SG; 5732 } 5733 5734 return dev; 5735 } 5736 5737 struct net_device *qeth_clone_netdev(struct net_device *orig) 5738 { 5739 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv); 5740 5741 if (!clone) 5742 return NULL; 5743 5744 clone->dev_port = orig->dev_port; 5745 return clone; 5746 } 5747 5748 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5749 { 5750 struct qeth_card *card; 5751 struct device *dev; 5752 int rc; 5753 enum qeth_discipline_id enforced_disc; 5754 char dbf_name[DBF_NAME_LEN]; 5755 5756 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5757 5758 dev = &gdev->dev; 5759 if (!get_device(dev)) 5760 return -ENODEV; 5761 5762 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5763 5764 card = qeth_alloc_card(gdev); 5765 if (!card) { 5766 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5767 rc = -ENOMEM; 5768 goto err_dev; 5769 } 5770 5771 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5772 dev_name(&gdev->dev)); 5773 card->debug = qeth_get_dbf_entry(dbf_name); 5774 if (!card->debug) { 5775 rc = qeth_add_dbf_entry(card, dbf_name); 5776 if (rc) 5777 goto err_card; 5778 } 5779 5780 qeth_setup_card(card); 5781 qeth_update_from_chp_desc(card); 5782 5783 card->dev = qeth_alloc_netdev(card); 5784 if (!card->dev) { 5785 rc = -ENOMEM; 5786 goto err_card; 5787 } 5788 5789 qeth_determine_capabilities(card); 5790 enforced_disc = qeth_enforce_discipline(card); 5791 switch (enforced_disc) { 5792 case QETH_DISCIPLINE_UNDETERMINED: 5793 gdev->dev.type = &qeth_generic_devtype; 5794 break; 5795 default: 5796 card->info.layer_enforced = true; 5797 rc = qeth_core_load_discipline(card, enforced_disc); 5798 if (rc) 5799 goto err_load; 5800 5801 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5802 ? card->discipline->devtype 5803 : &qeth_osn_devtype; 5804 rc = card->discipline->setup(card->gdev); 5805 if (rc) 5806 goto err_disc; 5807 break; 5808 } 5809 5810 write_lock_irq(&qeth_core_card_list.rwlock); 5811 list_add_tail(&card->list, &qeth_core_card_list.list); 5812 write_unlock_irq(&qeth_core_card_list.rwlock); 5813 return 0; 5814 5815 err_disc: 5816 qeth_core_free_discipline(card); 5817 err_load: 5818 free_netdev(card->dev); 5819 err_card: 5820 qeth_core_free_card(card); 5821 err_dev: 5822 put_device(dev); 5823 return rc; 5824 } 5825 5826 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5827 { 5828 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5829 5830 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5831 5832 if (card->discipline) { 5833 card->discipline->remove(gdev); 5834 qeth_core_free_discipline(card); 5835 } 5836 5837 write_lock_irq(&qeth_core_card_list.rwlock); 5838 list_del(&card->list); 5839 write_unlock_irq(&qeth_core_card_list.rwlock); 5840 free_netdev(card->dev); 5841 qeth_core_free_card(card); 5842 put_device(&gdev->dev); 5843 } 5844 5845 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5846 { 5847 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5848 int rc = 0; 5849 enum qeth_discipline_id def_discipline; 5850 5851 if (!card->discipline) { 5852 if (card->info.type == QETH_CARD_TYPE_IQD) 5853 def_discipline = QETH_DISCIPLINE_LAYER3; 5854 else 5855 def_discipline = QETH_DISCIPLINE_LAYER2; 5856 rc = qeth_core_load_discipline(card, def_discipline); 5857 if (rc) 5858 goto err; 5859 rc = card->discipline->setup(card->gdev); 5860 if (rc) { 5861 qeth_core_free_discipline(card); 5862 goto err; 5863 } 5864 } 5865 rc = card->discipline->set_online(gdev); 5866 err: 5867 return rc; 5868 } 5869 5870 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5871 { 5872 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5873 return card->discipline->set_offline(gdev); 5874 } 5875 5876 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5877 { 5878 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5879 qeth_set_allowed_threads(card, 0, 1); 5880 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5881 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5882 qeth_qdio_clear_card(card, 0); 5883 qeth_clear_qdio_buffers(card); 5884 qdio_free(CARD_DDEV(card)); 5885 } 5886 5887 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5888 { 5889 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5890 if (card->discipline && card->discipline->freeze) 5891 return card->discipline->freeze(gdev); 5892 return 0; 5893 } 5894 5895 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5896 { 5897 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5898 if (card->discipline && card->discipline->thaw) 5899 return card->discipline->thaw(gdev); 5900 return 0; 5901 } 5902 5903 static int qeth_core_restore(struct ccwgroup_device *gdev) 5904 { 5905 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5906 if (card->discipline && card->discipline->restore) 5907 return card->discipline->restore(gdev); 5908 return 0; 5909 } 5910 5911 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5912 size_t count) 5913 { 5914 int err; 5915 5916 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3, 5917 buf); 5918 5919 return err ? err : count; 5920 } 5921 static DRIVER_ATTR_WO(group); 5922 5923 static struct attribute *qeth_drv_attrs[] = { 5924 &driver_attr_group.attr, 5925 NULL, 5926 }; 5927 static struct attribute_group qeth_drv_attr_group = { 5928 .attrs = qeth_drv_attrs, 5929 }; 5930 static const struct attribute_group *qeth_drv_attr_groups[] = { 5931 &qeth_drv_attr_group, 5932 NULL, 5933 }; 5934 5935 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5936 .driver = { 5937 .groups = qeth_drv_attr_groups, 5938 .owner = THIS_MODULE, 5939 .name = "qeth", 5940 }, 5941 .ccw_driver = &qeth_ccw_driver, 5942 .setup = qeth_core_probe_device, 5943 .remove = qeth_core_remove_device, 5944 .set_online = qeth_core_set_online, 5945 .set_offline = qeth_core_set_offline, 5946 .shutdown = qeth_core_shutdown, 5947 .prepare = NULL, 5948 .complete = NULL, 5949 .freeze = qeth_core_freeze, 5950 .thaw = qeth_core_thaw, 5951 .restore = qeth_core_restore, 5952 }; 5953 5954 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5955 { 5956 struct qeth_card *card = dev->ml_priv; 5957 struct mii_ioctl_data *mii_data; 5958 int rc = 0; 5959 5960 if (!card) 5961 return -ENODEV; 5962 5963 if (!qeth_card_hw_is_reachable(card)) 5964 return -ENODEV; 5965 5966 if (card->info.type == QETH_CARD_TYPE_OSN) 5967 return -EPERM; 5968 5969 switch (cmd) { 5970 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5971 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5972 break; 5973 case SIOC_QETH_GET_CARD_TYPE: 5974 if ((card->info.type == QETH_CARD_TYPE_OSD || 5975 card->info.type == QETH_CARD_TYPE_OSM || 5976 card->info.type == QETH_CARD_TYPE_OSX) && 5977 !card->info.guestlan) 5978 return 1; 5979 else 5980 return 0; 5981 case SIOCGMIIPHY: 5982 mii_data = if_mii(rq); 5983 mii_data->phy_id = 0; 5984 break; 5985 case SIOCGMIIREG: 5986 mii_data = if_mii(rq); 5987 if (mii_data->phy_id != 0) 5988 rc = -EINVAL; 5989 else 5990 mii_data->val_out = qeth_mdio_read(dev, 5991 mii_data->phy_id, mii_data->reg_num); 5992 break; 5993 case SIOC_QETH_QUERY_OAT: 5994 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5995 break; 5996 default: 5997 if (card->discipline->do_ioctl) 5998 rc = card->discipline->do_ioctl(dev, rq, cmd); 5999 else 6000 rc = -EOPNOTSUPP; 6001 } 6002 if (rc) 6003 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 6004 return rc; 6005 } 6006 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 6007 6008 static struct { 6009 const char str[ETH_GSTRING_LEN]; 6010 } qeth_ethtool_stats_keys[] = { 6011 /* 0 */{"rx skbs"}, 6012 {"rx buffers"}, 6013 {"tx skbs"}, 6014 {"tx buffers"}, 6015 {"tx skbs no packing"}, 6016 {"tx buffers no packing"}, 6017 {"tx skbs packing"}, 6018 {"tx buffers packing"}, 6019 {"tx sg skbs"}, 6020 {"tx buffer elements"}, 6021 /* 10 */{"rx sg skbs"}, 6022 {"rx sg frags"}, 6023 {"rx sg page allocs"}, 6024 {"tx large kbytes"}, 6025 {"tx large count"}, 6026 {"tx pk state ch n->p"}, 6027 {"tx pk state ch p->n"}, 6028 {"tx pk watermark low"}, 6029 {"tx pk watermark high"}, 6030 {"queue 0 buffer usage"}, 6031 /* 20 */{"queue 1 buffer usage"}, 6032 {"queue 2 buffer usage"}, 6033 {"queue 3 buffer usage"}, 6034 {"rx poll time"}, 6035 {"rx poll count"}, 6036 {"rx do_QDIO time"}, 6037 {"rx do_QDIO count"}, 6038 {"tx handler time"}, 6039 {"tx handler count"}, 6040 {"tx time"}, 6041 /* 30 */{"tx count"}, 6042 {"tx do_QDIO time"}, 6043 {"tx do_QDIO count"}, 6044 {"tx csum"}, 6045 {"tx lin"}, 6046 {"tx linfail"}, 6047 {"cq handler count"}, 6048 {"cq handler time"}, 6049 {"rx csum"} 6050 }; 6051 6052 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 6053 { 6054 switch (stringset) { 6055 case ETH_SS_STATS: 6056 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 6057 default: 6058 return -EINVAL; 6059 } 6060 } 6061 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 6062 6063 void qeth_core_get_ethtool_stats(struct net_device *dev, 6064 struct ethtool_stats *stats, u64 *data) 6065 { 6066 struct qeth_card *card = dev->ml_priv; 6067 data[0] = card->stats.rx_packets - 6068 card->perf_stats.initial_rx_packets; 6069 data[1] = card->perf_stats.bufs_rec; 6070 data[2] = card->stats.tx_packets - 6071 card->perf_stats.initial_tx_packets; 6072 data[3] = card->perf_stats.bufs_sent; 6073 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 6074 - card->perf_stats.skbs_sent_pack; 6075 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 6076 data[6] = card->perf_stats.skbs_sent_pack; 6077 data[7] = card->perf_stats.bufs_sent_pack; 6078 data[8] = card->perf_stats.sg_skbs_sent; 6079 data[9] = card->perf_stats.buf_elements_sent; 6080 data[10] = card->perf_stats.sg_skbs_rx; 6081 data[11] = card->perf_stats.sg_frags_rx; 6082 data[12] = card->perf_stats.sg_alloc_page_rx; 6083 data[13] = (card->perf_stats.large_send_bytes >> 10); 6084 data[14] = card->perf_stats.large_send_cnt; 6085 data[15] = card->perf_stats.sc_dp_p; 6086 data[16] = card->perf_stats.sc_p_dp; 6087 data[17] = QETH_LOW_WATERMARK_PACK; 6088 data[18] = QETH_HIGH_WATERMARK_PACK; 6089 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 6090 data[20] = (card->qdio.no_out_queues > 1) ? 6091 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 6092 data[21] = (card->qdio.no_out_queues > 2) ? 6093 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6094 data[22] = (card->qdio.no_out_queues > 3) ? 6095 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6096 data[23] = card->perf_stats.inbound_time; 6097 data[24] = card->perf_stats.inbound_cnt; 6098 data[25] = card->perf_stats.inbound_do_qdio_time; 6099 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6100 data[27] = card->perf_stats.outbound_handler_time; 6101 data[28] = card->perf_stats.outbound_handler_cnt; 6102 data[29] = card->perf_stats.outbound_time; 6103 data[30] = card->perf_stats.outbound_cnt; 6104 data[31] = card->perf_stats.outbound_do_qdio_time; 6105 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6106 data[33] = card->perf_stats.tx_csum; 6107 data[34] = card->perf_stats.tx_lin; 6108 data[35] = card->perf_stats.tx_linfail; 6109 data[36] = card->perf_stats.cq_cnt; 6110 data[37] = card->perf_stats.cq_time; 6111 data[38] = card->perf_stats.rx_csum; 6112 } 6113 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6114 6115 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6116 { 6117 switch (stringset) { 6118 case ETH_SS_STATS: 6119 memcpy(data, &qeth_ethtool_stats_keys, 6120 sizeof(qeth_ethtool_stats_keys)); 6121 break; 6122 default: 6123 WARN_ON(1); 6124 break; 6125 } 6126 } 6127 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6128 6129 void qeth_core_get_drvinfo(struct net_device *dev, 6130 struct ethtool_drvinfo *info) 6131 { 6132 struct qeth_card *card = dev->ml_priv; 6133 6134 strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3", 6135 sizeof(info->driver)); 6136 strlcpy(info->version, "1.0", sizeof(info->version)); 6137 strlcpy(info->fw_version, card->info.mcl_level, 6138 sizeof(info->fw_version)); 6139 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6140 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6141 } 6142 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6143 6144 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6145 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6146 /* Always advertise and support all speeds up to specified, and only one */ 6147 /* specified port type. */ 6148 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6149 int maxspeed, int porttype) 6150 { 6151 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6152 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6153 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6154 6155 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6156 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6157 6158 switch (porttype) { 6159 case PORT_TP: 6160 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6161 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6162 break; 6163 case PORT_FIBRE: 6164 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6165 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6166 break; 6167 default: 6168 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6169 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6170 WARN_ON_ONCE(1); 6171 } 6172 6173 /* fallthrough from high to low, to select all legal speeds: */ 6174 switch (maxspeed) { 6175 case SPEED_10000: 6176 ethtool_link_ksettings_add_link_mode(cmd, supported, 6177 10000baseT_Full); 6178 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6179 10000baseT_Full); 6180 case SPEED_1000: 6181 ethtool_link_ksettings_add_link_mode(cmd, supported, 6182 1000baseT_Full); 6183 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6184 1000baseT_Full); 6185 ethtool_link_ksettings_add_link_mode(cmd, supported, 6186 1000baseT_Half); 6187 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6188 1000baseT_Half); 6189 case SPEED_100: 6190 ethtool_link_ksettings_add_link_mode(cmd, supported, 6191 100baseT_Full); 6192 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6193 100baseT_Full); 6194 ethtool_link_ksettings_add_link_mode(cmd, supported, 6195 100baseT_Half); 6196 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6197 100baseT_Half); 6198 case SPEED_10: 6199 ethtool_link_ksettings_add_link_mode(cmd, supported, 6200 10baseT_Full); 6201 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6202 10baseT_Full); 6203 ethtool_link_ksettings_add_link_mode(cmd, supported, 6204 10baseT_Half); 6205 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6206 10baseT_Half); 6207 /* end fallthrough */ 6208 break; 6209 default: 6210 ethtool_link_ksettings_add_link_mode(cmd, supported, 6211 10baseT_Full); 6212 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6213 10baseT_Full); 6214 ethtool_link_ksettings_add_link_mode(cmd, supported, 6215 10baseT_Half); 6216 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6217 10baseT_Half); 6218 WARN_ON_ONCE(1); 6219 } 6220 } 6221 6222 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6223 struct ethtool_link_ksettings *cmd) 6224 { 6225 struct qeth_card *card = netdev->ml_priv; 6226 enum qeth_link_types link_type; 6227 struct carrier_info carrier_info; 6228 int rc; 6229 6230 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6231 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6232 else 6233 link_type = card->info.link_type; 6234 6235 cmd->base.duplex = DUPLEX_FULL; 6236 cmd->base.autoneg = AUTONEG_ENABLE; 6237 cmd->base.phy_address = 0; 6238 cmd->base.mdio_support = 0; 6239 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6240 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6241 6242 switch (link_type) { 6243 case QETH_LINK_TYPE_FAST_ETH: 6244 case QETH_LINK_TYPE_LANE_ETH100: 6245 cmd->base.speed = SPEED_100; 6246 cmd->base.port = PORT_TP; 6247 break; 6248 case QETH_LINK_TYPE_GBIT_ETH: 6249 case QETH_LINK_TYPE_LANE_ETH1000: 6250 cmd->base.speed = SPEED_1000; 6251 cmd->base.port = PORT_FIBRE; 6252 break; 6253 case QETH_LINK_TYPE_10GBIT_ETH: 6254 cmd->base.speed = SPEED_10000; 6255 cmd->base.port = PORT_FIBRE; 6256 break; 6257 default: 6258 cmd->base.speed = SPEED_10; 6259 cmd->base.port = PORT_TP; 6260 } 6261 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6262 6263 /* Check if we can obtain more accurate information. */ 6264 /* If QUERY_CARD_INFO command is not supported or fails, */ 6265 /* just return the heuristics that was filled above. */ 6266 if (!qeth_card_hw_is_reachable(card)) 6267 return -ENODEV; 6268 rc = qeth_query_card_info(card, &carrier_info); 6269 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6270 return 0; 6271 if (rc) /* report error from the hardware operation */ 6272 return rc; 6273 /* on success, fill in the information got from the hardware */ 6274 6275 netdev_dbg(netdev, 6276 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6277 carrier_info.card_type, 6278 carrier_info.port_mode, 6279 carrier_info.port_speed); 6280 6281 /* Update attributes for which we've obtained more authoritative */ 6282 /* information, leave the rest the way they where filled above. */ 6283 switch (carrier_info.card_type) { 6284 case CARD_INFO_TYPE_1G_COPPER_A: 6285 case CARD_INFO_TYPE_1G_COPPER_B: 6286 cmd->base.port = PORT_TP; 6287 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6288 break; 6289 case CARD_INFO_TYPE_1G_FIBRE_A: 6290 case CARD_INFO_TYPE_1G_FIBRE_B: 6291 cmd->base.port = PORT_FIBRE; 6292 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6293 break; 6294 case CARD_INFO_TYPE_10G_FIBRE_A: 6295 case CARD_INFO_TYPE_10G_FIBRE_B: 6296 cmd->base.port = PORT_FIBRE; 6297 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6298 break; 6299 } 6300 6301 switch (carrier_info.port_mode) { 6302 case CARD_INFO_PORTM_FULLDUPLEX: 6303 cmd->base.duplex = DUPLEX_FULL; 6304 break; 6305 case CARD_INFO_PORTM_HALFDUPLEX: 6306 cmd->base.duplex = DUPLEX_HALF; 6307 break; 6308 } 6309 6310 switch (carrier_info.port_speed) { 6311 case CARD_INFO_PORTS_10M: 6312 cmd->base.speed = SPEED_10; 6313 break; 6314 case CARD_INFO_PORTS_100M: 6315 cmd->base.speed = SPEED_100; 6316 break; 6317 case CARD_INFO_PORTS_1G: 6318 cmd->base.speed = SPEED_1000; 6319 break; 6320 case CARD_INFO_PORTS_10G: 6321 cmd->base.speed = SPEED_10000; 6322 break; 6323 } 6324 6325 return 0; 6326 } 6327 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6328 6329 /* Callback to handle checksum offload command reply from OSA card. 6330 * Verify that required features have been enabled on the card. 6331 * Return error in hdr->return_code as this value is checked by caller. 6332 * 6333 * Always returns zero to indicate no further messages from the OSA card. 6334 */ 6335 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6336 struct qeth_reply *reply, 6337 unsigned long data) 6338 { 6339 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6340 struct qeth_checksum_cmd *chksum_cb = 6341 (struct qeth_checksum_cmd *)reply->param; 6342 6343 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6344 if (qeth_setassparms_inspect_rc(cmd)) 6345 return 0; 6346 6347 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6348 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6349 chksum_cb->supported = 6350 cmd->data.setassparms.data.chksum.supported; 6351 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6352 } 6353 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6354 chksum_cb->supported = 6355 cmd->data.setassparms.data.chksum.supported; 6356 chksum_cb->enabled = 6357 cmd->data.setassparms.data.chksum.enabled; 6358 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6359 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6360 } 6361 return 0; 6362 } 6363 6364 /* Send command to OSA card and check results. */ 6365 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6366 enum qeth_ipa_funcs ipa_func, 6367 __u16 cmd_code, long data, 6368 struct qeth_checksum_cmd *chksum_cb, 6369 enum qeth_prot_versions prot) 6370 { 6371 struct qeth_cmd_buffer *iob; 6372 int rc = -ENOMEM; 6373 6374 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6375 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6376 sizeof(__u32), prot); 6377 if (iob) 6378 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6379 qeth_ipa_checksum_run_cmd_cb, 6380 chksum_cb); 6381 return rc; 6382 } 6383 6384 static int qeth_send_checksum_on(struct qeth_card *card, int cstype, 6385 enum qeth_prot_versions prot) 6386 { 6387 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; 6388 struct qeth_checksum_cmd chksum_cb; 6389 int rc; 6390 6391 if (prot == QETH_PROT_IPV4) 6392 required_features |= QETH_IPA_CHECKSUM_IP_HDR; 6393 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6394 &chksum_cb, prot); 6395 if (!rc) { 6396 if ((required_features & chksum_cb.supported) != 6397 required_features) 6398 rc = -EIO; 6399 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6400 cstype == IPA_INBOUND_CHECKSUM) 6401 dev_warn(&card->gdev->dev, 6402 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6403 QETH_CARD_IFNAME(card)); 6404 } 6405 if (rc) { 6406 qeth_send_simple_setassparms_prot(card, cstype, 6407 IPA_CMD_ASS_STOP, 0, prot); 6408 dev_warn(&card->gdev->dev, 6409 "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n", 6410 prot, QETH_CARD_IFNAME(card)); 6411 return rc; 6412 } 6413 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6414 chksum_cb.supported, &chksum_cb, 6415 prot); 6416 if (!rc) { 6417 if ((required_features & chksum_cb.enabled) != 6418 required_features) 6419 rc = -EIO; 6420 } 6421 if (rc) { 6422 qeth_send_simple_setassparms_prot(card, cstype, 6423 IPA_CMD_ASS_STOP, 0, prot); 6424 dev_warn(&card->gdev->dev, 6425 "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n", 6426 prot, QETH_CARD_IFNAME(card)); 6427 return rc; 6428 } 6429 6430 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", 6431 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); 6432 return 0; 6433 } 6434 6435 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, 6436 enum qeth_prot_versions prot) 6437 { 6438 int rc = (on) ? qeth_send_checksum_on(card, cstype, prot) 6439 : qeth_send_simple_setassparms_prot(card, cstype, 6440 IPA_CMD_ASS_STOP, 0, 6441 prot); 6442 return rc ? -EIO : 0; 6443 } 6444 6445 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply, 6446 unsigned long data) 6447 { 6448 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6449 struct qeth_tso_start_data *tso_data = reply->param; 6450 6451 if (qeth_setassparms_inspect_rc(cmd)) 6452 return 0; 6453 6454 tso_data->mss = cmd->data.setassparms.data.tso.mss; 6455 tso_data->supported = cmd->data.setassparms.data.tso.supported; 6456 return 0; 6457 } 6458 6459 static int qeth_set_tso_off(struct qeth_card *card, 6460 enum qeth_prot_versions prot) 6461 { 6462 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO, 6463 IPA_CMD_ASS_STOP, 0, prot); 6464 } 6465 6466 static int qeth_set_tso_on(struct qeth_card *card, 6467 enum qeth_prot_versions prot) 6468 { 6469 struct qeth_tso_start_data tso_data; 6470 struct qeth_cmd_buffer *iob; 6471 struct qeth_ipa_caps caps; 6472 int rc; 6473 6474 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6475 IPA_CMD_ASS_START, 0, prot); 6476 if (!iob) 6477 return -ENOMEM; 6478 6479 rc = qeth_send_setassparms(card, iob, 0, 0 /* unused */, 6480 qeth_start_tso_cb, &tso_data); 6481 if (rc) 6482 return rc; 6483 6484 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) { 6485 qeth_set_tso_off(card, prot); 6486 return -EOPNOTSUPP; 6487 } 6488 6489 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6490 IPA_CMD_ASS_ENABLE, sizeof(caps), prot); 6491 if (!iob) { 6492 qeth_set_tso_off(card, prot); 6493 return -ENOMEM; 6494 } 6495 6496 /* enable TSO capability */ 6497 caps.supported = 0; 6498 caps.enabled = QETH_IPA_LARGE_SEND_TCP; 6499 rc = qeth_send_setassparms(card, iob, sizeof(caps), (long) &caps, 6500 qeth_setassparms_get_caps_cb, &caps); 6501 if (rc) { 6502 qeth_set_tso_off(card, prot); 6503 return rc; 6504 } 6505 6506 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) || 6507 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) { 6508 qeth_set_tso_off(card, prot); 6509 return -EOPNOTSUPP; 6510 } 6511 6512 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot, 6513 tso_data.mss); 6514 return 0; 6515 } 6516 6517 static int qeth_set_ipa_tso(struct qeth_card *card, bool on, 6518 enum qeth_prot_versions prot) 6519 { 6520 int rc = on ? qeth_set_tso_on(card, prot) : 6521 qeth_set_tso_off(card, prot); 6522 6523 return rc ? -EIO : 0; 6524 } 6525 6526 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) 6527 { 6528 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; 6529 int rc_ipv6; 6530 6531 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6532 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6533 QETH_PROT_IPV4); 6534 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6535 /* no/one Offload Assist available, so the rc is trivial */ 6536 return rc_ipv4; 6537 6538 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6539 QETH_PROT_IPV6); 6540 6541 if (on) 6542 /* enable: success if any Assist is active */ 6543 return (rc_ipv6) ? rc_ipv4 : 0; 6544 6545 /* disable: failure if any Assist is still active */ 6546 return (rc_ipv6) ? rc_ipv6 : rc_ipv4; 6547 } 6548 6549 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \ 6550 NETIF_F_IPV6_CSUM | NETIF_F_TSO6) 6551 /** 6552 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features 6553 * @dev: a net_device 6554 */ 6555 void qeth_enable_hw_features(struct net_device *dev) 6556 { 6557 struct qeth_card *card = dev->ml_priv; 6558 netdev_features_t features; 6559 6560 rtnl_lock(); 6561 features = dev->features; 6562 /* force-off any feature that needs an IPA sequence. 6563 * netdev_update_features() will restart them. 6564 */ 6565 dev->features &= ~QETH_HW_FEATURES; 6566 netdev_update_features(dev); 6567 if (features != dev->features) 6568 dev_warn(&card->gdev->dev, 6569 "Device recovery failed to restore all offload features\n"); 6570 rtnl_unlock(); 6571 } 6572 EXPORT_SYMBOL_GPL(qeth_enable_hw_features); 6573 6574 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6575 { 6576 struct qeth_card *card = dev->ml_priv; 6577 netdev_features_t changed = dev->features ^ features; 6578 int rc = 0; 6579 6580 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6581 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6582 6583 if ((changed & NETIF_F_IP_CSUM)) { 6584 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, 6585 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); 6586 if (rc) 6587 changed ^= NETIF_F_IP_CSUM; 6588 } 6589 if (changed & NETIF_F_IPV6_CSUM) { 6590 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, 6591 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); 6592 if (rc) 6593 changed ^= NETIF_F_IPV6_CSUM; 6594 } 6595 if (changed & NETIF_F_RXCSUM) { 6596 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); 6597 if (rc) 6598 changed ^= NETIF_F_RXCSUM; 6599 } 6600 if (changed & NETIF_F_TSO) { 6601 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO, 6602 QETH_PROT_IPV4); 6603 if (rc) 6604 changed ^= NETIF_F_TSO; 6605 } 6606 if (changed & NETIF_F_TSO6) { 6607 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6, 6608 QETH_PROT_IPV6); 6609 if (rc) 6610 changed ^= NETIF_F_TSO6; 6611 } 6612 6613 /* everything changed successfully? */ 6614 if ((dev->features ^ features) == changed) 6615 return 0; 6616 /* something went wrong. save changed features and return error */ 6617 dev->features ^= changed; 6618 return -EIO; 6619 } 6620 EXPORT_SYMBOL_GPL(qeth_set_features); 6621 6622 netdev_features_t qeth_fix_features(struct net_device *dev, 6623 netdev_features_t features) 6624 { 6625 struct qeth_card *card = dev->ml_priv; 6626 6627 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6628 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6629 features &= ~NETIF_F_IP_CSUM; 6630 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) 6631 features &= ~NETIF_F_IPV6_CSUM; 6632 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && 6633 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6634 features &= ~NETIF_F_RXCSUM; 6635 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6636 features &= ~NETIF_F_TSO; 6637 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO)) 6638 features &= ~NETIF_F_TSO6; 6639 /* if the card isn't up, remove features that require hw changes */ 6640 if (card->state == CARD_STATE_DOWN || 6641 card->state == CARD_STATE_RECOVER) 6642 features &= ~QETH_HW_FEATURES; 6643 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6644 return features; 6645 } 6646 EXPORT_SYMBOL_GPL(qeth_fix_features); 6647 6648 netdev_features_t qeth_features_check(struct sk_buff *skb, 6649 struct net_device *dev, 6650 netdev_features_t features) 6651 { 6652 /* GSO segmentation builds skbs with 6653 * a (small) linear part for the headers, and 6654 * page frags for the data. 6655 * Compared to a linear skb, the header-only part consumes an 6656 * additional buffer element. This reduces buffer utilization, and 6657 * hurts throughput. So compress small segments into one element. 6658 */ 6659 if (netif_needs_gso(skb, features)) { 6660 /* match skb_segment(): */ 6661 unsigned int doffset = skb->data - skb_mac_header(skb); 6662 unsigned int hsize = skb_shinfo(skb)->gso_size; 6663 unsigned int hroom = skb_headroom(skb); 6664 6665 /* linearize only if resulting skb allocations are order-0: */ 6666 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6667 features &= ~NETIF_F_SG; 6668 } 6669 6670 return vlan_features_check(skb, features); 6671 } 6672 EXPORT_SYMBOL_GPL(qeth_features_check); 6673 6674 static int __init qeth_core_init(void) 6675 { 6676 int rc; 6677 6678 pr_info("loading core functions\n"); 6679 INIT_LIST_HEAD(&qeth_core_card_list.list); 6680 rwlock_init(&qeth_core_card_list.rwlock); 6681 6682 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6683 if (!qeth_wq) { 6684 rc = -ENOMEM; 6685 goto out_err; 6686 } 6687 6688 rc = qeth_register_dbf_views(); 6689 if (rc) 6690 goto dbf_err; 6691 qeth_core_root_dev = root_device_register("qeth"); 6692 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6693 if (rc) 6694 goto register_err; 6695 qeth_core_header_cache = 6696 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE, 6697 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE), 6698 0, NULL); 6699 if (!qeth_core_header_cache) { 6700 rc = -ENOMEM; 6701 goto slab_err; 6702 } 6703 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6704 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6705 if (!qeth_qdio_outbuf_cache) { 6706 rc = -ENOMEM; 6707 goto cqslab_err; 6708 } 6709 rc = ccw_driver_register(&qeth_ccw_driver); 6710 if (rc) 6711 goto ccw_err; 6712 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6713 if (rc) 6714 goto ccwgroup_err; 6715 6716 return 0; 6717 6718 ccwgroup_err: 6719 ccw_driver_unregister(&qeth_ccw_driver); 6720 ccw_err: 6721 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6722 cqslab_err: 6723 kmem_cache_destroy(qeth_core_header_cache); 6724 slab_err: 6725 root_device_unregister(qeth_core_root_dev); 6726 register_err: 6727 qeth_unregister_dbf_views(); 6728 dbf_err: 6729 destroy_workqueue(qeth_wq); 6730 out_err: 6731 pr_err("Initializing the qeth device driver failed\n"); 6732 return rc; 6733 } 6734 6735 static void __exit qeth_core_exit(void) 6736 { 6737 qeth_clear_dbf_list(); 6738 destroy_workqueue(qeth_wq); 6739 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6740 ccw_driver_unregister(&qeth_ccw_driver); 6741 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6742 kmem_cache_destroy(qeth_core_header_cache); 6743 root_device_unregister(qeth_core_root_dev); 6744 qeth_unregister_dbf_views(); 6745 pr_info("core functions removed\n"); 6746 } 6747 6748 module_init(qeth_core_init); 6749 module_exit(qeth_core_exit); 6750 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6751 MODULE_DESCRIPTION("qeth core functions"); 6752 MODULE_LICENSE("GPL"); 6753