1 /* 2 * Copyright IBM Corp. 2007, 2009 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 4 * Frank Pavlic <fpavlic@de.ibm.com>, 5 * Thomas Spatzier <tspat@de.ibm.com>, 6 * Frank Blaschka <frank.blaschka@de.ibm.com> 7 */ 8 9 #define KMSG_COMPONENT "qeth" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/string.h> 15 #include <linux/errno.h> 16 #include <linux/kernel.h> 17 #include <linux/ip.h> 18 #include <linux/tcp.h> 19 #include <linux/mii.h> 20 #include <linux/kthread.h> 21 #include <linux/slab.h> 22 #include <net/iucv/af_iucv.h> 23 #include <net/dsfield.h> 24 25 #include <asm/ebcdic.h> 26 #include <asm/chpid.h> 27 #include <asm/io.h> 28 #include <asm/sysinfo.h> 29 #include <asm/compat.h> 30 31 #include "qeth_core.h" 32 33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 34 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 35 /* N P A M L V H */ 36 [QETH_DBF_SETUP] = {"qeth_setup", 37 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 38 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 39 &debug_sprintf_view, NULL}, 40 [QETH_DBF_CTRL] = {"qeth_control", 41 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 42 }; 43 EXPORT_SYMBOL_GPL(qeth_dbf); 44 45 struct qeth_card_list_struct qeth_core_card_list; 46 EXPORT_SYMBOL_GPL(qeth_core_card_list); 47 struct kmem_cache *qeth_core_header_cache; 48 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 49 static struct kmem_cache *qeth_qdio_outbuf_cache; 50 51 static struct device *qeth_core_root_dev; 52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY; 53 static struct lock_class_key qdio_out_skb_queue_key; 54 static struct mutex qeth_mod_mutex; 55 56 static void qeth_send_control_data_cb(struct qeth_channel *, 57 struct qeth_cmd_buffer *); 58 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 59 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 60 static void qeth_free_buffer_pool(struct qeth_card *); 61 static int qeth_qdio_establish(struct qeth_card *); 62 static void qeth_free_qdio_buffers(struct qeth_card *); 63 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 64 struct qeth_qdio_out_buffer *buf, 65 enum iucv_tx_notify notification); 66 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 67 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 68 struct qeth_qdio_out_buffer *buf, 69 enum qeth_qdio_buffer_states newbufstate); 70 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 71 72 struct workqueue_struct *qeth_wq; 73 EXPORT_SYMBOL_GPL(qeth_wq); 74 75 int qeth_card_hw_is_reachable(struct qeth_card *card) 76 { 77 return (card->state == CARD_STATE_SOFTSETUP) || 78 (card->state == CARD_STATE_UP); 79 } 80 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 81 82 static void qeth_close_dev_handler(struct work_struct *work) 83 { 84 struct qeth_card *card; 85 86 card = container_of(work, struct qeth_card, close_dev_work); 87 QETH_CARD_TEXT(card, 2, "cldevhdl"); 88 rtnl_lock(); 89 dev_close(card->dev); 90 rtnl_unlock(); 91 ccwgroup_set_offline(card->gdev); 92 } 93 94 void qeth_close_dev(struct qeth_card *card) 95 { 96 QETH_CARD_TEXT(card, 2, "cldevsubm"); 97 queue_work(qeth_wq, &card->close_dev_work); 98 } 99 EXPORT_SYMBOL_GPL(qeth_close_dev); 100 101 static inline const char *qeth_get_cardname(struct qeth_card *card) 102 { 103 if (card->info.guestlan) { 104 switch (card->info.type) { 105 case QETH_CARD_TYPE_OSD: 106 return " Virtual NIC QDIO"; 107 case QETH_CARD_TYPE_IQD: 108 return " Virtual NIC Hiper"; 109 case QETH_CARD_TYPE_OSM: 110 return " Virtual NIC QDIO - OSM"; 111 case QETH_CARD_TYPE_OSX: 112 return " Virtual NIC QDIO - OSX"; 113 default: 114 return " unknown"; 115 } 116 } else { 117 switch (card->info.type) { 118 case QETH_CARD_TYPE_OSD: 119 return " OSD Express"; 120 case QETH_CARD_TYPE_IQD: 121 return " HiperSockets"; 122 case QETH_CARD_TYPE_OSN: 123 return " OSN QDIO"; 124 case QETH_CARD_TYPE_OSM: 125 return " OSM QDIO"; 126 case QETH_CARD_TYPE_OSX: 127 return " OSX QDIO"; 128 default: 129 return " unknown"; 130 } 131 } 132 return " n/a"; 133 } 134 135 /* max length to be returned: 14 */ 136 const char *qeth_get_cardname_short(struct qeth_card *card) 137 { 138 if (card->info.guestlan) { 139 switch (card->info.type) { 140 case QETH_CARD_TYPE_OSD: 141 return "Virt.NIC QDIO"; 142 case QETH_CARD_TYPE_IQD: 143 return "Virt.NIC Hiper"; 144 case QETH_CARD_TYPE_OSM: 145 return "Virt.NIC OSM"; 146 case QETH_CARD_TYPE_OSX: 147 return "Virt.NIC OSX"; 148 default: 149 return "unknown"; 150 } 151 } else { 152 switch (card->info.type) { 153 case QETH_CARD_TYPE_OSD: 154 switch (card->info.link_type) { 155 case QETH_LINK_TYPE_FAST_ETH: 156 return "OSD_100"; 157 case QETH_LINK_TYPE_HSTR: 158 return "HSTR"; 159 case QETH_LINK_TYPE_GBIT_ETH: 160 return "OSD_1000"; 161 case QETH_LINK_TYPE_10GBIT_ETH: 162 return "OSD_10GIG"; 163 case QETH_LINK_TYPE_LANE_ETH100: 164 return "OSD_FE_LANE"; 165 case QETH_LINK_TYPE_LANE_TR: 166 return "OSD_TR_LANE"; 167 case QETH_LINK_TYPE_LANE_ETH1000: 168 return "OSD_GbE_LANE"; 169 case QETH_LINK_TYPE_LANE: 170 return "OSD_ATM_LANE"; 171 default: 172 return "OSD_Express"; 173 } 174 case QETH_CARD_TYPE_IQD: 175 return "HiperSockets"; 176 case QETH_CARD_TYPE_OSN: 177 return "OSN"; 178 case QETH_CARD_TYPE_OSM: 179 return "OSM_1000"; 180 case QETH_CARD_TYPE_OSX: 181 return "OSX_10GIG"; 182 default: 183 return "unknown"; 184 } 185 } 186 return "n/a"; 187 } 188 189 void qeth_set_recovery_task(struct qeth_card *card) 190 { 191 card->recovery_task = current; 192 } 193 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 194 195 void qeth_clear_recovery_task(struct qeth_card *card) 196 { 197 card->recovery_task = NULL; 198 } 199 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 200 201 static bool qeth_is_recovery_task(const struct qeth_card *card) 202 { 203 return card->recovery_task == current; 204 } 205 206 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 207 int clear_start_mask) 208 { 209 unsigned long flags; 210 211 spin_lock_irqsave(&card->thread_mask_lock, flags); 212 card->thread_allowed_mask = threads; 213 if (clear_start_mask) 214 card->thread_start_mask &= threads; 215 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 216 wake_up(&card->wait_q); 217 } 218 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 219 220 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 221 { 222 unsigned long flags; 223 int rc = 0; 224 225 spin_lock_irqsave(&card->thread_mask_lock, flags); 226 rc = (card->thread_running_mask & threads); 227 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 228 return rc; 229 } 230 EXPORT_SYMBOL_GPL(qeth_threads_running); 231 232 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 233 { 234 if (qeth_is_recovery_task(card)) 235 return 0; 236 return wait_event_interruptible(card->wait_q, 237 qeth_threads_running(card, threads) == 0); 238 } 239 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 240 241 void qeth_clear_working_pool_list(struct qeth_card *card) 242 { 243 struct qeth_buffer_pool_entry *pool_entry, *tmp; 244 245 QETH_CARD_TEXT(card, 5, "clwrklst"); 246 list_for_each_entry_safe(pool_entry, tmp, 247 &card->qdio.in_buf_pool.entry_list, list){ 248 list_del(&pool_entry->list); 249 } 250 } 251 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 252 253 static int qeth_alloc_buffer_pool(struct qeth_card *card) 254 { 255 struct qeth_buffer_pool_entry *pool_entry; 256 void *ptr; 257 int i, j; 258 259 QETH_CARD_TEXT(card, 5, "alocpool"); 260 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 261 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 262 if (!pool_entry) { 263 qeth_free_buffer_pool(card); 264 return -ENOMEM; 265 } 266 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 267 ptr = (void *) __get_free_page(GFP_KERNEL); 268 if (!ptr) { 269 while (j > 0) 270 free_page((unsigned long) 271 pool_entry->elements[--j]); 272 kfree(pool_entry); 273 qeth_free_buffer_pool(card); 274 return -ENOMEM; 275 } 276 pool_entry->elements[j] = ptr; 277 } 278 list_add(&pool_entry->init_list, 279 &card->qdio.init_pool.entry_list); 280 } 281 return 0; 282 } 283 284 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 285 { 286 QETH_CARD_TEXT(card, 2, "realcbp"); 287 288 if ((card->state != CARD_STATE_DOWN) && 289 (card->state != CARD_STATE_RECOVER)) 290 return -EPERM; 291 292 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 293 qeth_clear_working_pool_list(card); 294 qeth_free_buffer_pool(card); 295 card->qdio.in_buf_pool.buf_count = bufcnt; 296 card->qdio.init_pool.buf_count = bufcnt; 297 return qeth_alloc_buffer_pool(card); 298 } 299 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 300 301 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 302 { 303 if (!q) 304 return; 305 306 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 307 kfree(q); 308 } 309 310 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 311 { 312 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 313 int i; 314 315 if (!q) 316 return NULL; 317 318 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 319 kfree(q); 320 return NULL; 321 } 322 323 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 324 q->bufs[i].buffer = q->qdio_bufs[i]; 325 326 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 327 return q; 328 } 329 330 static inline int qeth_cq_init(struct qeth_card *card) 331 { 332 int rc; 333 334 if (card->options.cq == QETH_CQ_ENABLED) { 335 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 336 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 337 QDIO_MAX_BUFFERS_PER_Q); 338 card->qdio.c_q->next_buf_to_init = 127; 339 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 340 card->qdio.no_in_queues - 1, 0, 341 127); 342 if (rc) { 343 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 344 goto out; 345 } 346 } 347 rc = 0; 348 out: 349 return rc; 350 } 351 352 static inline int qeth_alloc_cq(struct qeth_card *card) 353 { 354 int rc; 355 356 if (card->options.cq == QETH_CQ_ENABLED) { 357 int i; 358 struct qdio_outbuf_state *outbuf_states; 359 360 QETH_DBF_TEXT(SETUP, 2, "cqon"); 361 card->qdio.c_q = qeth_alloc_qdio_queue(); 362 if (!card->qdio.c_q) { 363 rc = -1; 364 goto kmsg_out; 365 } 366 card->qdio.no_in_queues = 2; 367 card->qdio.out_bufstates = 368 kzalloc(card->qdio.no_out_queues * 369 QDIO_MAX_BUFFERS_PER_Q * 370 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 371 outbuf_states = card->qdio.out_bufstates; 372 if (outbuf_states == NULL) { 373 rc = -1; 374 goto free_cq_out; 375 } 376 for (i = 0; i < card->qdio.no_out_queues; ++i) { 377 card->qdio.out_qs[i]->bufstates = outbuf_states; 378 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 379 } 380 } else { 381 QETH_DBF_TEXT(SETUP, 2, "nocq"); 382 card->qdio.c_q = NULL; 383 card->qdio.no_in_queues = 1; 384 } 385 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 386 rc = 0; 387 out: 388 return rc; 389 free_cq_out: 390 qeth_free_qdio_queue(card->qdio.c_q); 391 card->qdio.c_q = NULL; 392 kmsg_out: 393 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 394 goto out; 395 } 396 397 static inline void qeth_free_cq(struct qeth_card *card) 398 { 399 if (card->qdio.c_q) { 400 --card->qdio.no_in_queues; 401 qeth_free_qdio_queue(card->qdio.c_q); 402 card->qdio.c_q = NULL; 403 } 404 kfree(card->qdio.out_bufstates); 405 card->qdio.out_bufstates = NULL; 406 } 407 408 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 409 int delayed) { 410 enum iucv_tx_notify n; 411 412 switch (sbalf15) { 413 case 0: 414 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 415 break; 416 case 4: 417 case 16: 418 case 17: 419 case 18: 420 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 421 TX_NOTIFY_UNREACHABLE; 422 break; 423 default: 424 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 425 TX_NOTIFY_GENERALERROR; 426 break; 427 } 428 429 return n; 430 } 431 432 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, 433 int bidx, int forced_cleanup) 434 { 435 if (q->card->options.cq != QETH_CQ_ENABLED) 436 return; 437 438 if (q->bufs[bidx]->next_pending != NULL) { 439 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 440 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 441 442 while (c) { 443 if (forced_cleanup || 444 atomic_read(&c->state) == 445 QETH_QDIO_BUF_HANDLED_DELAYED) { 446 struct qeth_qdio_out_buffer *f = c; 447 QETH_CARD_TEXT(f->q->card, 5, "fp"); 448 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 449 /* release here to avoid interleaving between 450 outbound tasklet and inbound tasklet 451 regarding notifications and lifecycle */ 452 qeth_release_skbs(c); 453 454 c = f->next_pending; 455 WARN_ON_ONCE(head->next_pending != f); 456 head->next_pending = c; 457 kmem_cache_free(qeth_qdio_outbuf_cache, f); 458 } else { 459 head = c; 460 c = c->next_pending; 461 } 462 463 } 464 } 465 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 466 QETH_QDIO_BUF_HANDLED_DELAYED)) { 467 /* for recovery situations */ 468 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 469 qeth_init_qdio_out_buf(q, bidx); 470 QETH_CARD_TEXT(q->card, 2, "clprecov"); 471 } 472 } 473 474 475 static inline void qeth_qdio_handle_aob(struct qeth_card *card, 476 unsigned long phys_aob_addr) { 477 struct qaob *aob; 478 struct qeth_qdio_out_buffer *buffer; 479 enum iucv_tx_notify notification; 480 481 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 482 QETH_CARD_TEXT(card, 5, "haob"); 483 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 484 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 485 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 486 487 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 488 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 489 notification = TX_NOTIFY_OK; 490 } else { 491 WARN_ON_ONCE(atomic_read(&buffer->state) != 492 QETH_QDIO_BUF_PENDING); 493 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 494 notification = TX_NOTIFY_DELAYED_OK; 495 } 496 497 if (aob->aorc != 0) { 498 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 499 notification = qeth_compute_cq_notification(aob->aorc, 1); 500 } 501 qeth_notify_skbs(buffer->q, buffer, notification); 502 503 buffer->aob = NULL; 504 qeth_clear_output_buffer(buffer->q, buffer, 505 QETH_QDIO_BUF_HANDLED_DELAYED); 506 507 /* from here on: do not touch buffer anymore */ 508 qdio_release_aob(aob); 509 } 510 511 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 512 { 513 return card->options.cq == QETH_CQ_ENABLED && 514 card->qdio.c_q != NULL && 515 queue != 0 && 516 queue == card->qdio.no_in_queues - 1; 517 } 518 519 520 static int qeth_issue_next_read(struct qeth_card *card) 521 { 522 int rc; 523 struct qeth_cmd_buffer *iob; 524 525 QETH_CARD_TEXT(card, 5, "issnxrd"); 526 if (card->read.state != CH_STATE_UP) 527 return -EIO; 528 iob = qeth_get_buffer(&card->read); 529 if (!iob) { 530 dev_warn(&card->gdev->dev, "The qeth device driver " 531 "failed to recover an error on the device\n"); 532 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 533 "available\n", dev_name(&card->gdev->dev)); 534 return -ENOMEM; 535 } 536 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 537 QETH_CARD_TEXT(card, 6, "noirqpnd"); 538 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 539 (addr_t) iob, 0, 0); 540 if (rc) { 541 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 542 "rc=%i\n", dev_name(&card->gdev->dev), rc); 543 atomic_set(&card->read.irq_pending, 0); 544 card->read_or_write_problem = 1; 545 qeth_schedule_recovery(card); 546 wake_up(&card->wait_q); 547 } 548 return rc; 549 } 550 551 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 552 { 553 struct qeth_reply *reply; 554 555 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 556 if (reply) { 557 atomic_set(&reply->refcnt, 1); 558 atomic_set(&reply->received, 0); 559 reply->card = card; 560 } 561 return reply; 562 } 563 564 static void qeth_get_reply(struct qeth_reply *reply) 565 { 566 WARN_ON(atomic_read(&reply->refcnt) <= 0); 567 atomic_inc(&reply->refcnt); 568 } 569 570 static void qeth_put_reply(struct qeth_reply *reply) 571 { 572 WARN_ON(atomic_read(&reply->refcnt) <= 0); 573 if (atomic_dec_and_test(&reply->refcnt)) 574 kfree(reply); 575 } 576 577 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 578 struct qeth_card *card) 579 { 580 char *ipa_name; 581 int com = cmd->hdr.command; 582 ipa_name = qeth_get_ipa_cmd_name(com); 583 if (rc) 584 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 585 "x%X \"%s\"\n", 586 ipa_name, com, dev_name(&card->gdev->dev), 587 QETH_CARD_IFNAME(card), rc, 588 qeth_get_ipa_msg(rc)); 589 else 590 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 591 ipa_name, com, dev_name(&card->gdev->dev), 592 QETH_CARD_IFNAME(card)); 593 } 594 595 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 596 struct qeth_cmd_buffer *iob) 597 { 598 struct qeth_ipa_cmd *cmd = NULL; 599 600 QETH_CARD_TEXT(card, 5, "chkipad"); 601 if (IS_IPA(iob->data)) { 602 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 603 if (IS_IPA_REPLY(cmd)) { 604 if (cmd->hdr.command != IPA_CMD_SETCCID && 605 cmd->hdr.command != IPA_CMD_DELCCID && 606 cmd->hdr.command != IPA_CMD_MODCCID && 607 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 608 qeth_issue_ipa_msg(cmd, 609 cmd->hdr.return_code, card); 610 return cmd; 611 } else { 612 switch (cmd->hdr.command) { 613 case IPA_CMD_STOPLAN: 614 if (cmd->hdr.return_code == 615 IPA_RC_VEPA_TO_VEB_TRANSITION) { 616 dev_err(&card->gdev->dev, 617 "Interface %s is down because the " 618 "adjacent port is no longer in " 619 "reflective relay mode\n", 620 QETH_CARD_IFNAME(card)); 621 qeth_close_dev(card); 622 } else { 623 dev_warn(&card->gdev->dev, 624 "The link for interface %s on CHPID" 625 " 0x%X failed\n", 626 QETH_CARD_IFNAME(card), 627 card->info.chpid); 628 qeth_issue_ipa_msg(cmd, 629 cmd->hdr.return_code, card); 630 } 631 card->lan_online = 0; 632 if (card->dev && netif_carrier_ok(card->dev)) 633 netif_carrier_off(card->dev); 634 return NULL; 635 case IPA_CMD_STARTLAN: 636 dev_info(&card->gdev->dev, 637 "The link for %s on CHPID 0x%X has" 638 " been restored\n", 639 QETH_CARD_IFNAME(card), 640 card->info.chpid); 641 netif_carrier_on(card->dev); 642 card->lan_online = 1; 643 if (card->info.hwtrap) 644 card->info.hwtrap = 2; 645 qeth_schedule_recovery(card); 646 return NULL; 647 case IPA_CMD_SETBRIDGEPORT_IQD: 648 case IPA_CMD_SETBRIDGEPORT_OSA: 649 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 650 if (card->discipline->control_event_handler 651 (card, cmd)) 652 return cmd; 653 else 654 return NULL; 655 case IPA_CMD_MODCCID: 656 return cmd; 657 case IPA_CMD_REGISTER_LOCAL_ADDR: 658 QETH_CARD_TEXT(card, 3, "irla"); 659 break; 660 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 661 QETH_CARD_TEXT(card, 3, "urla"); 662 break; 663 default: 664 QETH_DBF_MESSAGE(2, "Received data is IPA " 665 "but not a reply!\n"); 666 break; 667 } 668 } 669 } 670 return cmd; 671 } 672 673 void qeth_clear_ipacmd_list(struct qeth_card *card) 674 { 675 struct qeth_reply *reply, *r; 676 unsigned long flags; 677 678 QETH_CARD_TEXT(card, 4, "clipalst"); 679 680 spin_lock_irqsave(&card->lock, flags); 681 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 682 qeth_get_reply(reply); 683 reply->rc = -EIO; 684 atomic_inc(&reply->received); 685 list_del_init(&reply->list); 686 wake_up(&reply->wait_q); 687 qeth_put_reply(reply); 688 } 689 spin_unlock_irqrestore(&card->lock, flags); 690 atomic_set(&card->write.irq_pending, 0); 691 } 692 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 693 694 static int qeth_check_idx_response(struct qeth_card *card, 695 unsigned char *buffer) 696 { 697 if (!buffer) 698 return 0; 699 700 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 701 if ((buffer[2] & 0xc0) == 0xc0) { 702 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 703 "with cause code 0x%02x%s\n", 704 buffer[4], 705 ((buffer[4] == 0x22) ? 706 " -- try another portname" : "")); 707 QETH_CARD_TEXT(card, 2, "ckidxres"); 708 QETH_CARD_TEXT(card, 2, " idxterm"); 709 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 710 if (buffer[4] == 0xf6) { 711 dev_err(&card->gdev->dev, 712 "The qeth device is not configured " 713 "for the OSI layer required by z/VM\n"); 714 return -EPERM; 715 } 716 return -EIO; 717 } 718 return 0; 719 } 720 721 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 722 { 723 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 724 dev_get_drvdata(&cdev->dev))->dev); 725 return card; 726 } 727 728 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 729 __u32 len) 730 { 731 struct qeth_card *card; 732 733 card = CARD_FROM_CDEV(channel->ccwdev); 734 QETH_CARD_TEXT(card, 4, "setupccw"); 735 if (channel == &card->read) 736 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 737 else 738 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 739 channel->ccw.count = len; 740 channel->ccw.cda = (__u32) __pa(iob); 741 } 742 743 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 744 { 745 __u8 index; 746 747 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 748 index = channel->io_buf_no; 749 do { 750 if (channel->iob[index].state == BUF_STATE_FREE) { 751 channel->iob[index].state = BUF_STATE_LOCKED; 752 channel->io_buf_no = (channel->io_buf_no + 1) % 753 QETH_CMD_BUFFER_NO; 754 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 755 return channel->iob + index; 756 } 757 index = (index + 1) % QETH_CMD_BUFFER_NO; 758 } while (index != channel->io_buf_no); 759 760 return NULL; 761 } 762 763 void qeth_release_buffer(struct qeth_channel *channel, 764 struct qeth_cmd_buffer *iob) 765 { 766 unsigned long flags; 767 768 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 769 spin_lock_irqsave(&channel->iob_lock, flags); 770 memset(iob->data, 0, QETH_BUFSIZE); 771 iob->state = BUF_STATE_FREE; 772 iob->callback = qeth_send_control_data_cb; 773 iob->rc = 0; 774 spin_unlock_irqrestore(&channel->iob_lock, flags); 775 wake_up(&channel->wait_q); 776 } 777 EXPORT_SYMBOL_GPL(qeth_release_buffer); 778 779 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 780 { 781 struct qeth_cmd_buffer *buffer = NULL; 782 unsigned long flags; 783 784 spin_lock_irqsave(&channel->iob_lock, flags); 785 buffer = __qeth_get_buffer(channel); 786 spin_unlock_irqrestore(&channel->iob_lock, flags); 787 return buffer; 788 } 789 790 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 791 { 792 struct qeth_cmd_buffer *buffer; 793 wait_event(channel->wait_q, 794 ((buffer = qeth_get_buffer(channel)) != NULL)); 795 return buffer; 796 } 797 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 798 799 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 800 { 801 int cnt; 802 803 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 804 qeth_release_buffer(channel, &channel->iob[cnt]); 805 channel->buf_no = 0; 806 channel->io_buf_no = 0; 807 } 808 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 809 810 static void qeth_send_control_data_cb(struct qeth_channel *channel, 811 struct qeth_cmd_buffer *iob) 812 { 813 struct qeth_card *card; 814 struct qeth_reply *reply, *r; 815 struct qeth_ipa_cmd *cmd; 816 unsigned long flags; 817 int keep_reply; 818 int rc = 0; 819 820 card = CARD_FROM_CDEV(channel->ccwdev); 821 QETH_CARD_TEXT(card, 4, "sndctlcb"); 822 rc = qeth_check_idx_response(card, iob->data); 823 switch (rc) { 824 case 0: 825 break; 826 case -EIO: 827 qeth_clear_ipacmd_list(card); 828 qeth_schedule_recovery(card); 829 /* fall through */ 830 default: 831 goto out; 832 } 833 834 cmd = qeth_check_ipa_data(card, iob); 835 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 836 goto out; 837 /*in case of OSN : check if cmd is set */ 838 if (card->info.type == QETH_CARD_TYPE_OSN && 839 cmd && 840 cmd->hdr.command != IPA_CMD_STARTLAN && 841 card->osn_info.assist_cb != NULL) { 842 card->osn_info.assist_cb(card->dev, cmd); 843 goto out; 844 } 845 846 spin_lock_irqsave(&card->lock, flags); 847 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 848 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 849 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 850 qeth_get_reply(reply); 851 list_del_init(&reply->list); 852 spin_unlock_irqrestore(&card->lock, flags); 853 keep_reply = 0; 854 if (reply->callback != NULL) { 855 if (cmd) { 856 reply->offset = (__u16)((char *)cmd - 857 (char *)iob->data); 858 keep_reply = reply->callback(card, 859 reply, 860 (unsigned long)cmd); 861 } else 862 keep_reply = reply->callback(card, 863 reply, 864 (unsigned long)iob); 865 } 866 if (cmd) 867 reply->rc = (u16) cmd->hdr.return_code; 868 else if (iob->rc) 869 reply->rc = iob->rc; 870 if (keep_reply) { 871 spin_lock_irqsave(&card->lock, flags); 872 list_add_tail(&reply->list, 873 &card->cmd_waiter_list); 874 spin_unlock_irqrestore(&card->lock, flags); 875 } else { 876 atomic_inc(&reply->received); 877 wake_up(&reply->wait_q); 878 } 879 qeth_put_reply(reply); 880 goto out; 881 } 882 } 883 spin_unlock_irqrestore(&card->lock, flags); 884 out: 885 memcpy(&card->seqno.pdu_hdr_ack, 886 QETH_PDU_HEADER_SEQ_NO(iob->data), 887 QETH_SEQ_NO_LENGTH); 888 qeth_release_buffer(channel, iob); 889 } 890 891 static int qeth_setup_channel(struct qeth_channel *channel) 892 { 893 int cnt; 894 895 QETH_DBF_TEXT(SETUP, 2, "setupch"); 896 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 897 channel->iob[cnt].data = 898 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 899 if (channel->iob[cnt].data == NULL) 900 break; 901 channel->iob[cnt].state = BUF_STATE_FREE; 902 channel->iob[cnt].channel = channel; 903 channel->iob[cnt].callback = qeth_send_control_data_cb; 904 channel->iob[cnt].rc = 0; 905 } 906 if (cnt < QETH_CMD_BUFFER_NO) { 907 while (cnt-- > 0) 908 kfree(channel->iob[cnt].data); 909 return -ENOMEM; 910 } 911 channel->buf_no = 0; 912 channel->io_buf_no = 0; 913 atomic_set(&channel->irq_pending, 0); 914 spin_lock_init(&channel->iob_lock); 915 916 init_waitqueue_head(&channel->wait_q); 917 return 0; 918 } 919 920 static int qeth_set_thread_start_bit(struct qeth_card *card, 921 unsigned long thread) 922 { 923 unsigned long flags; 924 925 spin_lock_irqsave(&card->thread_mask_lock, flags); 926 if (!(card->thread_allowed_mask & thread) || 927 (card->thread_start_mask & thread)) { 928 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 929 return -EPERM; 930 } 931 card->thread_start_mask |= thread; 932 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 933 return 0; 934 } 935 936 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 937 { 938 unsigned long flags; 939 940 spin_lock_irqsave(&card->thread_mask_lock, flags); 941 card->thread_start_mask &= ~thread; 942 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 943 wake_up(&card->wait_q); 944 } 945 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 946 947 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 948 { 949 unsigned long flags; 950 951 spin_lock_irqsave(&card->thread_mask_lock, flags); 952 card->thread_running_mask &= ~thread; 953 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 954 wake_up(&card->wait_q); 955 } 956 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 957 958 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 959 { 960 unsigned long flags; 961 int rc = 0; 962 963 spin_lock_irqsave(&card->thread_mask_lock, flags); 964 if (card->thread_start_mask & thread) { 965 if ((card->thread_allowed_mask & thread) && 966 !(card->thread_running_mask & thread)) { 967 rc = 1; 968 card->thread_start_mask &= ~thread; 969 card->thread_running_mask |= thread; 970 } else 971 rc = -EPERM; 972 } 973 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 974 return rc; 975 } 976 977 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 978 { 979 int rc = 0; 980 981 wait_event(card->wait_q, 982 (rc = __qeth_do_run_thread(card, thread)) >= 0); 983 return rc; 984 } 985 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 986 987 void qeth_schedule_recovery(struct qeth_card *card) 988 { 989 QETH_CARD_TEXT(card, 2, "startrec"); 990 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 991 schedule_work(&card->kernel_thread_starter); 992 } 993 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 994 995 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 996 { 997 int dstat, cstat; 998 char *sense; 999 struct qeth_card *card; 1000 1001 sense = (char *) irb->ecw; 1002 cstat = irb->scsw.cmd.cstat; 1003 dstat = irb->scsw.cmd.dstat; 1004 card = CARD_FROM_CDEV(cdev); 1005 1006 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1007 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1008 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1009 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1010 dev_warn(&cdev->dev, "The qeth device driver " 1011 "failed to recover an error on the device\n"); 1012 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1013 dev_name(&cdev->dev), dstat, cstat); 1014 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1015 16, 1, irb, 64, 1); 1016 return 1; 1017 } 1018 1019 if (dstat & DEV_STAT_UNIT_CHECK) { 1020 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1021 SENSE_RESETTING_EVENT_FLAG) { 1022 QETH_CARD_TEXT(card, 2, "REVIND"); 1023 return 1; 1024 } 1025 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1026 SENSE_COMMAND_REJECT_FLAG) { 1027 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1028 return 1; 1029 } 1030 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1031 QETH_CARD_TEXT(card, 2, "AFFE"); 1032 return 1; 1033 } 1034 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1035 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1036 return 0; 1037 } 1038 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1039 return 1; 1040 } 1041 return 0; 1042 } 1043 1044 static long __qeth_check_irb_error(struct ccw_device *cdev, 1045 unsigned long intparm, struct irb *irb) 1046 { 1047 struct qeth_card *card; 1048 1049 card = CARD_FROM_CDEV(cdev); 1050 1051 if (!card || !IS_ERR(irb)) 1052 return 0; 1053 1054 switch (PTR_ERR(irb)) { 1055 case -EIO: 1056 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1057 dev_name(&cdev->dev)); 1058 QETH_CARD_TEXT(card, 2, "ckirberr"); 1059 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1060 break; 1061 case -ETIMEDOUT: 1062 dev_warn(&cdev->dev, "A hardware operation timed out" 1063 " on the device\n"); 1064 QETH_CARD_TEXT(card, 2, "ckirberr"); 1065 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1066 if (intparm == QETH_RCD_PARM) { 1067 if (card->data.ccwdev == cdev) { 1068 card->data.state = CH_STATE_DOWN; 1069 wake_up(&card->wait_q); 1070 } 1071 } 1072 break; 1073 default: 1074 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1075 dev_name(&cdev->dev), PTR_ERR(irb)); 1076 QETH_CARD_TEXT(card, 2, "ckirberr"); 1077 QETH_CARD_TEXT(card, 2, " rc???"); 1078 } 1079 return PTR_ERR(irb); 1080 } 1081 1082 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1083 struct irb *irb) 1084 { 1085 int rc; 1086 int cstat, dstat; 1087 struct qeth_cmd_buffer *buffer; 1088 struct qeth_channel *channel; 1089 struct qeth_card *card; 1090 struct qeth_cmd_buffer *iob; 1091 __u8 index; 1092 1093 if (__qeth_check_irb_error(cdev, intparm, irb)) 1094 return; 1095 cstat = irb->scsw.cmd.cstat; 1096 dstat = irb->scsw.cmd.dstat; 1097 1098 card = CARD_FROM_CDEV(cdev); 1099 if (!card) 1100 return; 1101 1102 QETH_CARD_TEXT(card, 5, "irq"); 1103 1104 if (card->read.ccwdev == cdev) { 1105 channel = &card->read; 1106 QETH_CARD_TEXT(card, 5, "read"); 1107 } else if (card->write.ccwdev == cdev) { 1108 channel = &card->write; 1109 QETH_CARD_TEXT(card, 5, "write"); 1110 } else { 1111 channel = &card->data; 1112 QETH_CARD_TEXT(card, 5, "data"); 1113 } 1114 atomic_set(&channel->irq_pending, 0); 1115 1116 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1117 channel->state = CH_STATE_STOPPED; 1118 1119 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1120 channel->state = CH_STATE_HALTED; 1121 1122 /*let's wake up immediately on data channel*/ 1123 if ((channel == &card->data) && (intparm != 0) && 1124 (intparm != QETH_RCD_PARM)) 1125 goto out; 1126 1127 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1128 QETH_CARD_TEXT(card, 6, "clrchpar"); 1129 /* we don't have to handle this further */ 1130 intparm = 0; 1131 } 1132 if (intparm == QETH_HALT_CHANNEL_PARM) { 1133 QETH_CARD_TEXT(card, 6, "hltchpar"); 1134 /* we don't have to handle this further */ 1135 intparm = 0; 1136 } 1137 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1138 (dstat & DEV_STAT_UNIT_CHECK) || 1139 (cstat)) { 1140 if (irb->esw.esw0.erw.cons) { 1141 dev_warn(&channel->ccwdev->dev, 1142 "The qeth device driver failed to recover " 1143 "an error on the device\n"); 1144 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1145 "0x%X dstat 0x%X\n", 1146 dev_name(&channel->ccwdev->dev), cstat, dstat); 1147 print_hex_dump(KERN_WARNING, "qeth: irb ", 1148 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1149 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1150 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1151 } 1152 if (intparm == QETH_RCD_PARM) { 1153 channel->state = CH_STATE_DOWN; 1154 goto out; 1155 } 1156 rc = qeth_get_problem(cdev, irb); 1157 if (rc) { 1158 qeth_clear_ipacmd_list(card); 1159 qeth_schedule_recovery(card); 1160 goto out; 1161 } 1162 } 1163 1164 if (intparm == QETH_RCD_PARM) { 1165 channel->state = CH_STATE_RCD_DONE; 1166 goto out; 1167 } 1168 if (intparm) { 1169 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1170 buffer->state = BUF_STATE_PROCESSED; 1171 } 1172 if (channel == &card->data) 1173 return; 1174 if (channel == &card->read && 1175 channel->state == CH_STATE_UP) 1176 qeth_issue_next_read(card); 1177 1178 iob = channel->iob; 1179 index = channel->buf_no; 1180 while (iob[index].state == BUF_STATE_PROCESSED) { 1181 if (iob[index].callback != NULL) 1182 iob[index].callback(channel, iob + index); 1183 1184 index = (index + 1) % QETH_CMD_BUFFER_NO; 1185 } 1186 channel->buf_no = index; 1187 out: 1188 wake_up(&card->wait_q); 1189 return; 1190 } 1191 1192 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1193 struct qeth_qdio_out_buffer *buf, 1194 enum iucv_tx_notify notification) 1195 { 1196 struct sk_buff *skb; 1197 1198 if (skb_queue_empty(&buf->skb_list)) 1199 goto out; 1200 skb = skb_peek(&buf->skb_list); 1201 while (skb) { 1202 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1203 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1204 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1205 if (skb->sk) { 1206 struct iucv_sock *iucv = iucv_sk(skb->sk); 1207 iucv->sk_txnotify(skb, notification); 1208 } 1209 } 1210 if (skb_queue_is_last(&buf->skb_list, skb)) 1211 skb = NULL; 1212 else 1213 skb = skb_queue_next(&buf->skb_list, skb); 1214 } 1215 out: 1216 return; 1217 } 1218 1219 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1220 { 1221 struct sk_buff *skb; 1222 struct iucv_sock *iucv; 1223 int notify_general_error = 0; 1224 1225 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1226 notify_general_error = 1; 1227 1228 /* release may never happen from within CQ tasklet scope */ 1229 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1230 1231 skb = skb_dequeue(&buf->skb_list); 1232 while (skb) { 1233 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1234 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1235 if (notify_general_error && 1236 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1237 if (skb->sk) { 1238 iucv = iucv_sk(skb->sk); 1239 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1240 } 1241 } 1242 atomic_dec(&skb->users); 1243 dev_kfree_skb_any(skb); 1244 skb = skb_dequeue(&buf->skb_list); 1245 } 1246 } 1247 1248 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1249 struct qeth_qdio_out_buffer *buf, 1250 enum qeth_qdio_buffer_states newbufstate) 1251 { 1252 int i; 1253 1254 /* is PCI flag set on buffer? */ 1255 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1256 atomic_dec(&queue->set_pci_flags_count); 1257 1258 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1259 qeth_release_skbs(buf); 1260 } 1261 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1262 if (buf->buffer->element[i].addr && buf->is_header[i]) 1263 kmem_cache_free(qeth_core_header_cache, 1264 buf->buffer->element[i].addr); 1265 buf->is_header[i] = 0; 1266 buf->buffer->element[i].length = 0; 1267 buf->buffer->element[i].addr = NULL; 1268 buf->buffer->element[i].eflags = 0; 1269 buf->buffer->element[i].sflags = 0; 1270 } 1271 buf->buffer->element[15].eflags = 0; 1272 buf->buffer->element[15].sflags = 0; 1273 buf->next_element_to_fill = 0; 1274 atomic_set(&buf->state, newbufstate); 1275 } 1276 1277 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1278 { 1279 int j; 1280 1281 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1282 if (!q->bufs[j]) 1283 continue; 1284 qeth_cleanup_handled_pending(q, j, 1); 1285 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1286 if (free) { 1287 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1288 q->bufs[j] = NULL; 1289 } 1290 } 1291 } 1292 1293 void qeth_clear_qdio_buffers(struct qeth_card *card) 1294 { 1295 int i; 1296 1297 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1298 /* clear outbound buffers to free skbs */ 1299 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1300 if (card->qdio.out_qs[i]) { 1301 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1302 } 1303 } 1304 } 1305 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1306 1307 static void qeth_free_buffer_pool(struct qeth_card *card) 1308 { 1309 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1310 int i = 0; 1311 list_for_each_entry_safe(pool_entry, tmp, 1312 &card->qdio.init_pool.entry_list, init_list){ 1313 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1314 free_page((unsigned long)pool_entry->elements[i]); 1315 list_del(&pool_entry->init_list); 1316 kfree(pool_entry); 1317 } 1318 } 1319 1320 static void qeth_clean_channel(struct qeth_channel *channel) 1321 { 1322 int cnt; 1323 1324 QETH_DBF_TEXT(SETUP, 2, "freech"); 1325 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1326 kfree(channel->iob[cnt].data); 1327 } 1328 1329 static void qeth_set_single_write_queues(struct qeth_card *card) 1330 { 1331 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1332 (card->qdio.no_out_queues == 4)) 1333 qeth_free_qdio_buffers(card); 1334 1335 card->qdio.no_out_queues = 1; 1336 if (card->qdio.default_out_queue != 0) 1337 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1338 1339 card->qdio.default_out_queue = 0; 1340 } 1341 1342 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1343 { 1344 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1345 (card->qdio.no_out_queues == 1)) { 1346 qeth_free_qdio_buffers(card); 1347 card->qdio.default_out_queue = 2; 1348 } 1349 card->qdio.no_out_queues = 4; 1350 } 1351 1352 static void qeth_update_from_chp_desc(struct qeth_card *card) 1353 { 1354 struct ccw_device *ccwdev; 1355 struct channel_path_desc *chp_dsc; 1356 1357 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1358 1359 ccwdev = card->data.ccwdev; 1360 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1361 if (!chp_dsc) 1362 goto out; 1363 1364 card->info.func_level = 0x4100 + chp_dsc->desc; 1365 if (card->info.type == QETH_CARD_TYPE_IQD) 1366 goto out; 1367 1368 /* CHPP field bit 6 == 1 -> single queue */ 1369 if ((chp_dsc->chpp & 0x02) == 0x02) 1370 qeth_set_single_write_queues(card); 1371 else 1372 qeth_set_multiple_write_queues(card); 1373 out: 1374 kfree(chp_dsc); 1375 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1376 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1377 } 1378 1379 static void qeth_init_qdio_info(struct qeth_card *card) 1380 { 1381 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1382 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1383 /* inbound */ 1384 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1385 if (card->info.type == QETH_CARD_TYPE_IQD) 1386 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1387 else 1388 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1389 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1390 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1391 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1392 } 1393 1394 static void qeth_set_intial_options(struct qeth_card *card) 1395 { 1396 card->options.route4.type = NO_ROUTER; 1397 card->options.route6.type = NO_ROUTER; 1398 card->options.fake_broadcast = 0; 1399 card->options.performance_stats = 0; 1400 card->options.rx_sg_cb = QETH_RX_SG_CB; 1401 card->options.isolation = ISOLATION_MODE_NONE; 1402 card->options.cq = QETH_CQ_DISABLED; 1403 } 1404 1405 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1406 { 1407 unsigned long flags; 1408 int rc = 0; 1409 1410 spin_lock_irqsave(&card->thread_mask_lock, flags); 1411 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1412 (u8) card->thread_start_mask, 1413 (u8) card->thread_allowed_mask, 1414 (u8) card->thread_running_mask); 1415 rc = (card->thread_start_mask & thread); 1416 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1417 return rc; 1418 } 1419 1420 static void qeth_start_kernel_thread(struct work_struct *work) 1421 { 1422 struct task_struct *ts; 1423 struct qeth_card *card = container_of(work, struct qeth_card, 1424 kernel_thread_starter); 1425 QETH_CARD_TEXT(card , 2, "strthrd"); 1426 1427 if (card->read.state != CH_STATE_UP && 1428 card->write.state != CH_STATE_UP) 1429 return; 1430 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1431 ts = kthread_run(card->discipline->recover, (void *)card, 1432 "qeth_recover"); 1433 if (IS_ERR(ts)) { 1434 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1435 qeth_clear_thread_running_bit(card, 1436 QETH_RECOVER_THREAD); 1437 } 1438 } 1439 } 1440 1441 static void qeth_buffer_reclaim_work(struct work_struct *); 1442 static int qeth_setup_card(struct qeth_card *card) 1443 { 1444 1445 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1446 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1447 1448 card->read.state = CH_STATE_DOWN; 1449 card->write.state = CH_STATE_DOWN; 1450 card->data.state = CH_STATE_DOWN; 1451 card->state = CARD_STATE_DOWN; 1452 card->lan_online = 0; 1453 card->read_or_write_problem = 0; 1454 card->dev = NULL; 1455 spin_lock_init(&card->vlanlock); 1456 spin_lock_init(&card->mclock); 1457 spin_lock_init(&card->lock); 1458 spin_lock_init(&card->ip_lock); 1459 spin_lock_init(&card->thread_mask_lock); 1460 mutex_init(&card->conf_mutex); 1461 mutex_init(&card->discipline_mutex); 1462 card->thread_start_mask = 0; 1463 card->thread_allowed_mask = 0; 1464 card->thread_running_mask = 0; 1465 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1466 INIT_LIST_HEAD(&card->cmd_waiter_list); 1467 init_waitqueue_head(&card->wait_q); 1468 /* initial options */ 1469 qeth_set_intial_options(card); 1470 /* IP address takeover */ 1471 INIT_LIST_HEAD(&card->ipato.entries); 1472 card->ipato.enabled = 0; 1473 card->ipato.invert4 = 0; 1474 card->ipato.invert6 = 0; 1475 /* init QDIO stuff */ 1476 qeth_init_qdio_info(card); 1477 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1478 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1479 return 0; 1480 } 1481 1482 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1483 { 1484 struct qeth_card *card = container_of(slr, struct qeth_card, 1485 qeth_service_level); 1486 if (card->info.mcl_level[0]) 1487 seq_printf(m, "qeth: %s firmware level %s\n", 1488 CARD_BUS_ID(card), card->info.mcl_level); 1489 } 1490 1491 static struct qeth_card *qeth_alloc_card(void) 1492 { 1493 struct qeth_card *card; 1494 1495 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1496 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1497 if (!card) 1498 goto out; 1499 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1500 if (qeth_setup_channel(&card->read)) 1501 goto out_ip; 1502 if (qeth_setup_channel(&card->write)) 1503 goto out_channel; 1504 card->options.layer2 = -1; 1505 card->qeth_service_level.seq_print = qeth_core_sl_print; 1506 register_service_level(&card->qeth_service_level); 1507 return card; 1508 1509 out_channel: 1510 qeth_clean_channel(&card->read); 1511 out_ip: 1512 kfree(card); 1513 out: 1514 return NULL; 1515 } 1516 1517 static int qeth_determine_card_type(struct qeth_card *card) 1518 { 1519 int i = 0; 1520 1521 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1522 1523 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1524 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1525 while (known_devices[i][QETH_DEV_MODEL_IND]) { 1526 if ((CARD_RDEV(card)->id.dev_type == 1527 known_devices[i][QETH_DEV_TYPE_IND]) && 1528 (CARD_RDEV(card)->id.dev_model == 1529 known_devices[i][QETH_DEV_MODEL_IND])) { 1530 card->info.type = known_devices[i][QETH_DEV_MODEL_IND]; 1531 card->qdio.no_out_queues = 1532 known_devices[i][QETH_QUEUE_NO_IND]; 1533 card->qdio.no_in_queues = 1; 1534 card->info.is_multicast_different = 1535 known_devices[i][QETH_MULTICAST_IND]; 1536 qeth_update_from_chp_desc(card); 1537 return 0; 1538 } 1539 i++; 1540 } 1541 card->info.type = QETH_CARD_TYPE_UNKNOWN; 1542 dev_err(&card->gdev->dev, "The adapter hardware is of an " 1543 "unknown type\n"); 1544 return -ENOENT; 1545 } 1546 1547 static int qeth_clear_channel(struct qeth_channel *channel) 1548 { 1549 unsigned long flags; 1550 struct qeth_card *card; 1551 int rc; 1552 1553 card = CARD_FROM_CDEV(channel->ccwdev); 1554 QETH_CARD_TEXT(card, 3, "clearch"); 1555 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1556 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1557 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1558 1559 if (rc) 1560 return rc; 1561 rc = wait_event_interruptible_timeout(card->wait_q, 1562 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1563 if (rc == -ERESTARTSYS) 1564 return rc; 1565 if (channel->state != CH_STATE_STOPPED) 1566 return -ETIME; 1567 channel->state = CH_STATE_DOWN; 1568 return 0; 1569 } 1570 1571 static int qeth_halt_channel(struct qeth_channel *channel) 1572 { 1573 unsigned long flags; 1574 struct qeth_card *card; 1575 int rc; 1576 1577 card = CARD_FROM_CDEV(channel->ccwdev); 1578 QETH_CARD_TEXT(card, 3, "haltch"); 1579 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1580 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1581 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1582 1583 if (rc) 1584 return rc; 1585 rc = wait_event_interruptible_timeout(card->wait_q, 1586 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1587 if (rc == -ERESTARTSYS) 1588 return rc; 1589 if (channel->state != CH_STATE_HALTED) 1590 return -ETIME; 1591 return 0; 1592 } 1593 1594 static int qeth_halt_channels(struct qeth_card *card) 1595 { 1596 int rc1 = 0, rc2 = 0, rc3 = 0; 1597 1598 QETH_CARD_TEXT(card, 3, "haltchs"); 1599 rc1 = qeth_halt_channel(&card->read); 1600 rc2 = qeth_halt_channel(&card->write); 1601 rc3 = qeth_halt_channel(&card->data); 1602 if (rc1) 1603 return rc1; 1604 if (rc2) 1605 return rc2; 1606 return rc3; 1607 } 1608 1609 static int qeth_clear_channels(struct qeth_card *card) 1610 { 1611 int rc1 = 0, rc2 = 0, rc3 = 0; 1612 1613 QETH_CARD_TEXT(card, 3, "clearchs"); 1614 rc1 = qeth_clear_channel(&card->read); 1615 rc2 = qeth_clear_channel(&card->write); 1616 rc3 = qeth_clear_channel(&card->data); 1617 if (rc1) 1618 return rc1; 1619 if (rc2) 1620 return rc2; 1621 return rc3; 1622 } 1623 1624 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1625 { 1626 int rc = 0; 1627 1628 QETH_CARD_TEXT(card, 3, "clhacrd"); 1629 1630 if (halt) 1631 rc = qeth_halt_channels(card); 1632 if (rc) 1633 return rc; 1634 return qeth_clear_channels(card); 1635 } 1636 1637 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1638 { 1639 int rc = 0; 1640 1641 QETH_CARD_TEXT(card, 3, "qdioclr"); 1642 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1643 QETH_QDIO_CLEANING)) { 1644 case QETH_QDIO_ESTABLISHED: 1645 if (card->info.type == QETH_CARD_TYPE_IQD) 1646 rc = qdio_shutdown(CARD_DDEV(card), 1647 QDIO_FLAG_CLEANUP_USING_HALT); 1648 else 1649 rc = qdio_shutdown(CARD_DDEV(card), 1650 QDIO_FLAG_CLEANUP_USING_CLEAR); 1651 if (rc) 1652 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1653 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1654 break; 1655 case QETH_QDIO_CLEANING: 1656 return rc; 1657 default: 1658 break; 1659 } 1660 rc = qeth_clear_halt_card(card, use_halt); 1661 if (rc) 1662 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1663 card->state = CARD_STATE_DOWN; 1664 return rc; 1665 } 1666 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1667 1668 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1669 int *length) 1670 { 1671 struct ciw *ciw; 1672 char *rcd_buf; 1673 int ret; 1674 struct qeth_channel *channel = &card->data; 1675 unsigned long flags; 1676 1677 /* 1678 * scan for RCD command in extended SenseID data 1679 */ 1680 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1681 if (!ciw || ciw->cmd == 0) 1682 return -EOPNOTSUPP; 1683 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1684 if (!rcd_buf) 1685 return -ENOMEM; 1686 1687 channel->ccw.cmd_code = ciw->cmd; 1688 channel->ccw.cda = (__u32) __pa(rcd_buf); 1689 channel->ccw.count = ciw->count; 1690 channel->ccw.flags = CCW_FLAG_SLI; 1691 channel->state = CH_STATE_RCD; 1692 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1693 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1694 QETH_RCD_PARM, LPM_ANYPATH, 0, 1695 QETH_RCD_TIMEOUT); 1696 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1697 if (!ret) 1698 wait_event(card->wait_q, 1699 (channel->state == CH_STATE_RCD_DONE || 1700 channel->state == CH_STATE_DOWN)); 1701 if (channel->state == CH_STATE_DOWN) 1702 ret = -EIO; 1703 else 1704 channel->state = CH_STATE_DOWN; 1705 if (ret) { 1706 kfree(rcd_buf); 1707 *buffer = NULL; 1708 *length = 0; 1709 } else { 1710 *length = ciw->count; 1711 *buffer = rcd_buf; 1712 } 1713 return ret; 1714 } 1715 1716 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1717 { 1718 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1719 card->info.chpid = prcd[30]; 1720 card->info.unit_addr2 = prcd[31]; 1721 card->info.cula = prcd[63]; 1722 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1723 (prcd[0x11] == _ascebc['M'])); 1724 } 1725 1726 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1727 { 1728 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1729 1730 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1731 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1732 card->info.blkt.time_total = 0; 1733 card->info.blkt.inter_packet = 0; 1734 card->info.blkt.inter_packet_jumbo = 0; 1735 } else { 1736 card->info.blkt.time_total = 250; 1737 card->info.blkt.inter_packet = 5; 1738 card->info.blkt.inter_packet_jumbo = 15; 1739 } 1740 } 1741 1742 static void qeth_init_tokens(struct qeth_card *card) 1743 { 1744 card->token.issuer_rm_w = 0x00010103UL; 1745 card->token.cm_filter_w = 0x00010108UL; 1746 card->token.cm_connection_w = 0x0001010aUL; 1747 card->token.ulp_filter_w = 0x0001010bUL; 1748 card->token.ulp_connection_w = 0x0001010dUL; 1749 } 1750 1751 static void qeth_init_func_level(struct qeth_card *card) 1752 { 1753 switch (card->info.type) { 1754 case QETH_CARD_TYPE_IQD: 1755 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1756 break; 1757 case QETH_CARD_TYPE_OSD: 1758 case QETH_CARD_TYPE_OSN: 1759 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1760 break; 1761 default: 1762 break; 1763 } 1764 } 1765 1766 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1767 void (*idx_reply_cb)(struct qeth_channel *, 1768 struct qeth_cmd_buffer *)) 1769 { 1770 struct qeth_cmd_buffer *iob; 1771 unsigned long flags; 1772 int rc; 1773 struct qeth_card *card; 1774 1775 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1776 card = CARD_FROM_CDEV(channel->ccwdev); 1777 iob = qeth_get_buffer(channel); 1778 if (!iob) 1779 return -ENOMEM; 1780 iob->callback = idx_reply_cb; 1781 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1782 channel->ccw.count = QETH_BUFSIZE; 1783 channel->ccw.cda = (__u32) __pa(iob->data); 1784 1785 wait_event(card->wait_q, 1786 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1787 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1788 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1789 rc = ccw_device_start(channel->ccwdev, 1790 &channel->ccw, (addr_t) iob, 0, 0); 1791 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1792 1793 if (rc) { 1794 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1795 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1796 atomic_set(&channel->irq_pending, 0); 1797 wake_up(&card->wait_q); 1798 return rc; 1799 } 1800 rc = wait_event_interruptible_timeout(card->wait_q, 1801 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1802 if (rc == -ERESTARTSYS) 1803 return rc; 1804 if (channel->state != CH_STATE_UP) { 1805 rc = -ETIME; 1806 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1807 qeth_clear_cmd_buffers(channel); 1808 } else 1809 rc = 0; 1810 return rc; 1811 } 1812 1813 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1814 void (*idx_reply_cb)(struct qeth_channel *, 1815 struct qeth_cmd_buffer *)) 1816 { 1817 struct qeth_card *card; 1818 struct qeth_cmd_buffer *iob; 1819 unsigned long flags; 1820 __u16 temp; 1821 __u8 tmp; 1822 int rc; 1823 struct ccw_dev_id temp_devid; 1824 1825 card = CARD_FROM_CDEV(channel->ccwdev); 1826 1827 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1828 1829 iob = qeth_get_buffer(channel); 1830 if (!iob) 1831 return -ENOMEM; 1832 iob->callback = idx_reply_cb; 1833 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1834 channel->ccw.count = IDX_ACTIVATE_SIZE; 1835 channel->ccw.cda = (__u32) __pa(iob->data); 1836 if (channel == &card->write) { 1837 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1838 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1839 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1840 card->seqno.trans_hdr++; 1841 } else { 1842 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1843 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1844 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1845 } 1846 tmp = ((__u8)card->info.portno) | 0x80; 1847 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1848 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1849 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1850 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1851 &card->info.func_level, sizeof(__u16)); 1852 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1853 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1854 temp = (card->info.cula << 8) + card->info.unit_addr2; 1855 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1856 1857 wait_event(card->wait_q, 1858 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1859 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1860 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1861 rc = ccw_device_start(channel->ccwdev, 1862 &channel->ccw, (addr_t) iob, 0, 0); 1863 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1864 1865 if (rc) { 1866 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1867 rc); 1868 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1869 atomic_set(&channel->irq_pending, 0); 1870 wake_up(&card->wait_q); 1871 return rc; 1872 } 1873 rc = wait_event_interruptible_timeout(card->wait_q, 1874 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1875 if (rc == -ERESTARTSYS) 1876 return rc; 1877 if (channel->state != CH_STATE_ACTIVATING) { 1878 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1879 " failed to recover an error on the device\n"); 1880 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1881 dev_name(&channel->ccwdev->dev)); 1882 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1883 qeth_clear_cmd_buffers(channel); 1884 return -ETIME; 1885 } 1886 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1887 } 1888 1889 static int qeth_peer_func_level(int level) 1890 { 1891 if ((level & 0xff) == 8) 1892 return (level & 0xff) + 0x400; 1893 if (((level >> 8) & 3) == 1) 1894 return (level & 0xff) + 0x200; 1895 return level; 1896 } 1897 1898 static void qeth_idx_write_cb(struct qeth_channel *channel, 1899 struct qeth_cmd_buffer *iob) 1900 { 1901 struct qeth_card *card; 1902 __u16 temp; 1903 1904 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1905 1906 if (channel->state == CH_STATE_DOWN) { 1907 channel->state = CH_STATE_ACTIVATING; 1908 goto out; 1909 } 1910 card = CARD_FROM_CDEV(channel->ccwdev); 1911 1912 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1913 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1914 dev_err(&card->write.ccwdev->dev, 1915 "The adapter is used exclusively by another " 1916 "host\n"); 1917 else 1918 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1919 " negative reply\n", 1920 dev_name(&card->write.ccwdev->dev)); 1921 goto out; 1922 } 1923 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1924 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1925 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1926 "function level mismatch (sent: 0x%x, received: " 1927 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 1928 card->info.func_level, temp); 1929 goto out; 1930 } 1931 channel->state = CH_STATE_UP; 1932 out: 1933 qeth_release_buffer(channel, iob); 1934 } 1935 1936 static void qeth_idx_read_cb(struct qeth_channel *channel, 1937 struct qeth_cmd_buffer *iob) 1938 { 1939 struct qeth_card *card; 1940 __u16 temp; 1941 1942 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1943 if (channel->state == CH_STATE_DOWN) { 1944 channel->state = CH_STATE_ACTIVATING; 1945 goto out; 1946 } 1947 1948 card = CARD_FROM_CDEV(channel->ccwdev); 1949 if (qeth_check_idx_response(card, iob->data)) 1950 goto out; 1951 1952 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1953 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1954 case QETH_IDX_ACT_ERR_EXCL: 1955 dev_err(&card->write.ccwdev->dev, 1956 "The adapter is used exclusively by another " 1957 "host\n"); 1958 break; 1959 case QETH_IDX_ACT_ERR_AUTH: 1960 case QETH_IDX_ACT_ERR_AUTH_USER: 1961 dev_err(&card->read.ccwdev->dev, 1962 "Setting the device online failed because of " 1963 "insufficient authorization\n"); 1964 break; 1965 default: 1966 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1967 " negative reply\n", 1968 dev_name(&card->read.ccwdev->dev)); 1969 } 1970 QETH_CARD_TEXT_(card, 2, "idxread%c", 1971 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1972 goto out; 1973 } 1974 1975 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1976 if (temp != qeth_peer_func_level(card->info.func_level)) { 1977 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 1978 "level mismatch (sent: 0x%x, received: 0x%x)\n", 1979 dev_name(&card->read.ccwdev->dev), 1980 card->info.func_level, temp); 1981 goto out; 1982 } 1983 memcpy(&card->token.issuer_rm_r, 1984 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1985 QETH_MPC_TOKEN_LENGTH); 1986 memcpy(&card->info.mcl_level[0], 1987 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1988 channel->state = CH_STATE_UP; 1989 out: 1990 qeth_release_buffer(channel, iob); 1991 } 1992 1993 void qeth_prepare_control_data(struct qeth_card *card, int len, 1994 struct qeth_cmd_buffer *iob) 1995 { 1996 qeth_setup_ccw(&card->write, iob->data, len); 1997 iob->callback = qeth_release_buffer; 1998 1999 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2000 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2001 card->seqno.trans_hdr++; 2002 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2003 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2004 card->seqno.pdu_hdr++; 2005 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2006 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2007 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2008 } 2009 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2010 2011 /** 2012 * qeth_send_control_data() - send control command to the card 2013 * @card: qeth_card structure pointer 2014 * @len: size of the command buffer 2015 * @iob: qeth_cmd_buffer pointer 2016 * @reply_cb: callback function pointer 2017 * @cb_card: pointer to the qeth_card structure 2018 * @cb_reply: pointer to the qeth_reply structure 2019 * @cb_cmd: pointer to the original iob for non-IPA 2020 * commands, or to the qeth_ipa_cmd structure 2021 * for the IPA commands. 2022 * @reply_param: private pointer passed to the callback 2023 * 2024 * Returns the value of the `return_code' field of the response 2025 * block returned from the hardware, or other error indication. 2026 * Value of zero indicates successful execution of the command. 2027 * 2028 * Callback function gets called one or more times, with cb_cmd 2029 * pointing to the response returned by the hardware. Callback 2030 * function must return non-zero if more reply blocks are expected, 2031 * and zero if the last or only reply block is received. Callback 2032 * function can get the value of the reply_param pointer from the 2033 * field 'param' of the structure qeth_reply. 2034 */ 2035 2036 int qeth_send_control_data(struct qeth_card *card, int len, 2037 struct qeth_cmd_buffer *iob, 2038 int (*reply_cb)(struct qeth_card *cb_card, 2039 struct qeth_reply *cb_reply, 2040 unsigned long cb_cmd), 2041 void *reply_param) 2042 { 2043 int rc; 2044 unsigned long flags; 2045 struct qeth_reply *reply = NULL; 2046 unsigned long timeout, event_timeout; 2047 struct qeth_ipa_cmd *cmd; 2048 2049 QETH_CARD_TEXT(card, 2, "sendctl"); 2050 2051 if (card->read_or_write_problem) { 2052 qeth_release_buffer(iob->channel, iob); 2053 return -EIO; 2054 } 2055 reply = qeth_alloc_reply(card); 2056 if (!reply) { 2057 return -ENOMEM; 2058 } 2059 reply->callback = reply_cb; 2060 reply->param = reply_param; 2061 if (card->state == CARD_STATE_DOWN) 2062 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2063 else 2064 reply->seqno = card->seqno.ipa++; 2065 init_waitqueue_head(&reply->wait_q); 2066 spin_lock_irqsave(&card->lock, flags); 2067 list_add_tail(&reply->list, &card->cmd_waiter_list); 2068 spin_unlock_irqrestore(&card->lock, flags); 2069 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2070 2071 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2072 qeth_prepare_control_data(card, len, iob); 2073 2074 if (IS_IPA(iob->data)) 2075 event_timeout = QETH_IPA_TIMEOUT; 2076 else 2077 event_timeout = QETH_TIMEOUT; 2078 timeout = jiffies + event_timeout; 2079 2080 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2081 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2082 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2083 (addr_t) iob, 0, 0); 2084 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2085 if (rc) { 2086 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2087 "ccw_device_start rc = %i\n", 2088 dev_name(&card->write.ccwdev->dev), rc); 2089 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2090 spin_lock_irqsave(&card->lock, flags); 2091 list_del_init(&reply->list); 2092 qeth_put_reply(reply); 2093 spin_unlock_irqrestore(&card->lock, flags); 2094 qeth_release_buffer(iob->channel, iob); 2095 atomic_set(&card->write.irq_pending, 0); 2096 wake_up(&card->wait_q); 2097 return rc; 2098 } 2099 2100 /* we have only one long running ipassist, since we can ensure 2101 process context of this command we can sleep */ 2102 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2103 if ((cmd->hdr.command == IPA_CMD_SETIP) && 2104 (cmd->hdr.prot_version == QETH_PROT_IPV4)) { 2105 if (!wait_event_timeout(reply->wait_q, 2106 atomic_read(&reply->received), event_timeout)) 2107 goto time_err; 2108 } else { 2109 while (!atomic_read(&reply->received)) { 2110 if (time_after(jiffies, timeout)) 2111 goto time_err; 2112 cpu_relax(); 2113 } 2114 } 2115 2116 if (reply->rc == -EIO) 2117 goto error; 2118 rc = reply->rc; 2119 qeth_put_reply(reply); 2120 return rc; 2121 2122 time_err: 2123 reply->rc = -ETIME; 2124 spin_lock_irqsave(&reply->card->lock, flags); 2125 list_del_init(&reply->list); 2126 spin_unlock_irqrestore(&reply->card->lock, flags); 2127 atomic_inc(&reply->received); 2128 error: 2129 atomic_set(&card->write.irq_pending, 0); 2130 qeth_release_buffer(iob->channel, iob); 2131 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2132 rc = reply->rc; 2133 qeth_put_reply(reply); 2134 return rc; 2135 } 2136 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2137 2138 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2139 unsigned long data) 2140 { 2141 struct qeth_cmd_buffer *iob; 2142 2143 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2144 2145 iob = (struct qeth_cmd_buffer *) data; 2146 memcpy(&card->token.cm_filter_r, 2147 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2148 QETH_MPC_TOKEN_LENGTH); 2149 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2150 return 0; 2151 } 2152 2153 static int qeth_cm_enable(struct qeth_card *card) 2154 { 2155 int rc; 2156 struct qeth_cmd_buffer *iob; 2157 2158 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2159 2160 iob = qeth_wait_for_buffer(&card->write); 2161 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2162 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2163 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2164 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2165 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2166 2167 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2168 qeth_cm_enable_cb, NULL); 2169 return rc; 2170 } 2171 2172 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2173 unsigned long data) 2174 { 2175 2176 struct qeth_cmd_buffer *iob; 2177 2178 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2179 2180 iob = (struct qeth_cmd_buffer *) data; 2181 memcpy(&card->token.cm_connection_r, 2182 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2183 QETH_MPC_TOKEN_LENGTH); 2184 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2185 return 0; 2186 } 2187 2188 static int qeth_cm_setup(struct qeth_card *card) 2189 { 2190 int rc; 2191 struct qeth_cmd_buffer *iob; 2192 2193 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2194 2195 iob = qeth_wait_for_buffer(&card->write); 2196 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2197 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2198 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2199 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2200 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2201 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2202 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2203 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2204 qeth_cm_setup_cb, NULL); 2205 return rc; 2206 2207 } 2208 2209 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2210 { 2211 switch (card->info.type) { 2212 case QETH_CARD_TYPE_UNKNOWN: 2213 return 1500; 2214 case QETH_CARD_TYPE_IQD: 2215 return card->info.max_mtu; 2216 case QETH_CARD_TYPE_OSD: 2217 switch (card->info.link_type) { 2218 case QETH_LINK_TYPE_HSTR: 2219 case QETH_LINK_TYPE_LANE_TR: 2220 return 2000; 2221 default: 2222 return card->options.layer2 ? 1500 : 1492; 2223 } 2224 case QETH_CARD_TYPE_OSM: 2225 case QETH_CARD_TYPE_OSX: 2226 return card->options.layer2 ? 1500 : 1492; 2227 default: 2228 return 1500; 2229 } 2230 } 2231 2232 static inline int qeth_get_mtu_outof_framesize(int framesize) 2233 { 2234 switch (framesize) { 2235 case 0x4000: 2236 return 8192; 2237 case 0x6000: 2238 return 16384; 2239 case 0xa000: 2240 return 32768; 2241 case 0xffff: 2242 return 57344; 2243 default: 2244 return 0; 2245 } 2246 } 2247 2248 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2249 { 2250 switch (card->info.type) { 2251 case QETH_CARD_TYPE_OSD: 2252 case QETH_CARD_TYPE_OSM: 2253 case QETH_CARD_TYPE_OSX: 2254 case QETH_CARD_TYPE_IQD: 2255 return ((mtu >= 576) && 2256 (mtu <= card->info.max_mtu)); 2257 case QETH_CARD_TYPE_OSN: 2258 case QETH_CARD_TYPE_UNKNOWN: 2259 default: 2260 return 1; 2261 } 2262 } 2263 2264 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2265 unsigned long data) 2266 { 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 if (!mtu) { 2283 iob->rc = -EINVAL; 2284 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2285 return 0; 2286 } 2287 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2288 /* frame size has changed */ 2289 if (card->dev && 2290 ((card->dev->mtu == card->info.initial_mtu) || 2291 (card->dev->mtu > mtu))) 2292 card->dev->mtu = mtu; 2293 qeth_free_qdio_buffers(card); 2294 } 2295 card->info.initial_mtu = mtu; 2296 card->info.max_mtu = mtu; 2297 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2298 } else { 2299 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2300 iob->data); 2301 card->info.initial_mtu = min(card->info.max_mtu, 2302 qeth_get_initial_mtu_for_card(card)); 2303 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2304 } 2305 2306 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2307 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2308 memcpy(&link_type, 2309 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2310 card->info.link_type = link_type; 2311 } else 2312 card->info.link_type = 0; 2313 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2314 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2315 return 0; 2316 } 2317 2318 static int qeth_ulp_enable(struct qeth_card *card) 2319 { 2320 int rc; 2321 char prot_type; 2322 struct qeth_cmd_buffer *iob; 2323 2324 /*FIXME: trace view callbacks*/ 2325 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2326 2327 iob = qeth_wait_for_buffer(&card->write); 2328 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2329 2330 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2331 (__u8) card->info.portno; 2332 if (card->options.layer2) 2333 if (card->info.type == QETH_CARD_TYPE_OSN) 2334 prot_type = QETH_PROT_OSN2; 2335 else 2336 prot_type = QETH_PROT_LAYER2; 2337 else 2338 prot_type = QETH_PROT_TCPIP; 2339 2340 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2341 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2342 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2343 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2344 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2345 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2346 qeth_ulp_enable_cb, NULL); 2347 return rc; 2348 2349 } 2350 2351 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2352 unsigned long data) 2353 { 2354 struct qeth_cmd_buffer *iob; 2355 2356 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2357 2358 iob = (struct qeth_cmd_buffer *) data; 2359 memcpy(&card->token.ulp_connection_r, 2360 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2361 QETH_MPC_TOKEN_LENGTH); 2362 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2363 3)) { 2364 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2365 dev_err(&card->gdev->dev, "A connection could not be " 2366 "established because of an OLM limit\n"); 2367 iob->rc = -EMLINK; 2368 } 2369 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2370 return 0; 2371 } 2372 2373 static int qeth_ulp_setup(struct qeth_card *card) 2374 { 2375 int rc; 2376 __u16 temp; 2377 struct qeth_cmd_buffer *iob; 2378 struct ccw_dev_id dev_id; 2379 2380 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2381 2382 iob = qeth_wait_for_buffer(&card->write); 2383 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2384 2385 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2386 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2387 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2388 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2389 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2390 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2391 2392 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2393 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2394 temp = (card->info.cula << 8) + card->info.unit_addr2; 2395 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2396 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2397 qeth_ulp_setup_cb, NULL); 2398 return rc; 2399 } 2400 2401 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2402 { 2403 int rc; 2404 struct qeth_qdio_out_buffer *newbuf; 2405 2406 rc = 0; 2407 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2408 if (!newbuf) { 2409 rc = -ENOMEM; 2410 goto out; 2411 } 2412 newbuf->buffer = q->qdio_bufs[bidx]; 2413 skb_queue_head_init(&newbuf->skb_list); 2414 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2415 newbuf->q = q; 2416 newbuf->aob = NULL; 2417 newbuf->next_pending = q->bufs[bidx]; 2418 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2419 q->bufs[bidx] = newbuf; 2420 if (q->bufstates) { 2421 q->bufstates[bidx].user = newbuf; 2422 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2423 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2424 QETH_CARD_TEXT_(q->card, 2, "%lx", 2425 (long) newbuf->next_pending); 2426 } 2427 out: 2428 return rc; 2429 } 2430 2431 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2432 { 2433 if (!q) 2434 return; 2435 2436 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2437 kfree(q); 2438 } 2439 2440 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2441 { 2442 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2443 2444 if (!q) 2445 return NULL; 2446 2447 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2448 kfree(q); 2449 return NULL; 2450 } 2451 return q; 2452 } 2453 2454 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2455 { 2456 int i, j; 2457 2458 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2459 2460 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2461 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2462 return 0; 2463 2464 QETH_DBF_TEXT(SETUP, 2, "inq"); 2465 card->qdio.in_q = qeth_alloc_qdio_queue(); 2466 if (!card->qdio.in_q) 2467 goto out_nomem; 2468 2469 /* inbound buffer pool */ 2470 if (qeth_alloc_buffer_pool(card)) 2471 goto out_freeinq; 2472 2473 /* outbound */ 2474 card->qdio.out_qs = 2475 kzalloc(card->qdio.no_out_queues * 2476 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2477 if (!card->qdio.out_qs) 2478 goto out_freepool; 2479 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2480 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2481 if (!card->qdio.out_qs[i]) 2482 goto out_freeoutq; 2483 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2484 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2485 card->qdio.out_qs[i]->queue_no = i; 2486 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2487 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2488 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2489 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2490 goto out_freeoutqbufs; 2491 } 2492 } 2493 2494 /* completion */ 2495 if (qeth_alloc_cq(card)) 2496 goto out_freeoutq; 2497 2498 return 0; 2499 2500 out_freeoutqbufs: 2501 while (j > 0) { 2502 --j; 2503 kmem_cache_free(qeth_qdio_outbuf_cache, 2504 card->qdio.out_qs[i]->bufs[j]); 2505 card->qdio.out_qs[i]->bufs[j] = NULL; 2506 } 2507 out_freeoutq: 2508 while (i > 0) { 2509 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2510 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2511 } 2512 kfree(card->qdio.out_qs); 2513 card->qdio.out_qs = NULL; 2514 out_freepool: 2515 qeth_free_buffer_pool(card); 2516 out_freeinq: 2517 qeth_free_qdio_queue(card->qdio.in_q); 2518 card->qdio.in_q = NULL; 2519 out_nomem: 2520 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2521 return -ENOMEM; 2522 } 2523 2524 static void qeth_free_qdio_buffers(struct qeth_card *card) 2525 { 2526 int i, j; 2527 2528 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2529 QETH_QDIO_UNINITIALIZED) 2530 return; 2531 2532 qeth_free_cq(card); 2533 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2534 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2535 if (card->qdio.in_q->bufs[j].rx_skb) 2536 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2537 } 2538 qeth_free_qdio_queue(card->qdio.in_q); 2539 card->qdio.in_q = NULL; 2540 /* inbound buffer pool */ 2541 qeth_free_buffer_pool(card); 2542 /* free outbound qdio_qs */ 2543 if (card->qdio.out_qs) { 2544 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2545 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2546 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2547 } 2548 kfree(card->qdio.out_qs); 2549 card->qdio.out_qs = NULL; 2550 } 2551 } 2552 2553 static void qeth_create_qib_param_field(struct qeth_card *card, 2554 char *param_field) 2555 { 2556 2557 param_field[0] = _ascebc['P']; 2558 param_field[1] = _ascebc['C']; 2559 param_field[2] = _ascebc['I']; 2560 param_field[3] = _ascebc['T']; 2561 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2562 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2563 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2564 } 2565 2566 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2567 char *param_field) 2568 { 2569 param_field[16] = _ascebc['B']; 2570 param_field[17] = _ascebc['L']; 2571 param_field[18] = _ascebc['K']; 2572 param_field[19] = _ascebc['T']; 2573 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2574 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2575 *((unsigned int *) (¶m_field[28])) = 2576 card->info.blkt.inter_packet_jumbo; 2577 } 2578 2579 static int qeth_qdio_activate(struct qeth_card *card) 2580 { 2581 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2582 return qdio_activate(CARD_DDEV(card)); 2583 } 2584 2585 static int qeth_dm_act(struct qeth_card *card) 2586 { 2587 int rc; 2588 struct qeth_cmd_buffer *iob; 2589 2590 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2591 2592 iob = qeth_wait_for_buffer(&card->write); 2593 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2594 2595 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2596 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2597 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2598 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2599 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2600 return rc; 2601 } 2602 2603 static int qeth_mpc_initialize(struct qeth_card *card) 2604 { 2605 int rc; 2606 2607 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2608 2609 rc = qeth_issue_next_read(card); 2610 if (rc) { 2611 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2612 return rc; 2613 } 2614 rc = qeth_cm_enable(card); 2615 if (rc) { 2616 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2617 goto out_qdio; 2618 } 2619 rc = qeth_cm_setup(card); 2620 if (rc) { 2621 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2622 goto out_qdio; 2623 } 2624 rc = qeth_ulp_enable(card); 2625 if (rc) { 2626 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2627 goto out_qdio; 2628 } 2629 rc = qeth_ulp_setup(card); 2630 if (rc) { 2631 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2632 goto out_qdio; 2633 } 2634 rc = qeth_alloc_qdio_buffers(card); 2635 if (rc) { 2636 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2637 goto out_qdio; 2638 } 2639 rc = qeth_qdio_establish(card); 2640 if (rc) { 2641 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2642 qeth_free_qdio_buffers(card); 2643 goto out_qdio; 2644 } 2645 rc = qeth_qdio_activate(card); 2646 if (rc) { 2647 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2648 goto out_qdio; 2649 } 2650 rc = qeth_dm_act(card); 2651 if (rc) { 2652 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2653 goto out_qdio; 2654 } 2655 2656 return 0; 2657 out_qdio: 2658 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2659 qdio_free(CARD_DDEV(card)); 2660 return rc; 2661 } 2662 2663 void qeth_print_status_message(struct qeth_card *card) 2664 { 2665 switch (card->info.type) { 2666 case QETH_CARD_TYPE_OSD: 2667 case QETH_CARD_TYPE_OSM: 2668 case QETH_CARD_TYPE_OSX: 2669 /* VM will use a non-zero first character 2670 * to indicate a HiperSockets like reporting 2671 * of the level OSA sets the first character to zero 2672 * */ 2673 if (!card->info.mcl_level[0]) { 2674 sprintf(card->info.mcl_level, "%02x%02x", 2675 card->info.mcl_level[2], 2676 card->info.mcl_level[3]); 2677 break; 2678 } 2679 /* fallthrough */ 2680 case QETH_CARD_TYPE_IQD: 2681 if ((card->info.guestlan) || 2682 (card->info.mcl_level[0] & 0x80)) { 2683 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2684 card->info.mcl_level[0]]; 2685 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2686 card->info.mcl_level[1]]; 2687 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2688 card->info.mcl_level[2]]; 2689 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2690 card->info.mcl_level[3]]; 2691 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2692 } 2693 break; 2694 default: 2695 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2696 } 2697 dev_info(&card->gdev->dev, 2698 "Device is a%s card%s%s%s\nwith link type %s.\n", 2699 qeth_get_cardname(card), 2700 (card->info.mcl_level[0]) ? " (level: " : "", 2701 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2702 (card->info.mcl_level[0]) ? ")" : "", 2703 qeth_get_cardname_short(card)); 2704 } 2705 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2706 2707 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2708 { 2709 struct qeth_buffer_pool_entry *entry; 2710 2711 QETH_CARD_TEXT(card, 5, "inwrklst"); 2712 2713 list_for_each_entry(entry, 2714 &card->qdio.init_pool.entry_list, init_list) { 2715 qeth_put_buffer_pool_entry(card, entry); 2716 } 2717 } 2718 2719 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2720 struct qeth_card *card) 2721 { 2722 struct list_head *plh; 2723 struct qeth_buffer_pool_entry *entry; 2724 int i, free; 2725 struct page *page; 2726 2727 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2728 return NULL; 2729 2730 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2731 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2732 free = 1; 2733 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2734 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2735 free = 0; 2736 break; 2737 } 2738 } 2739 if (free) { 2740 list_del_init(&entry->list); 2741 return entry; 2742 } 2743 } 2744 2745 /* no free buffer in pool so take first one and swap pages */ 2746 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2747 struct qeth_buffer_pool_entry, list); 2748 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2749 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2750 page = alloc_page(GFP_ATOMIC); 2751 if (!page) { 2752 return NULL; 2753 } else { 2754 free_page((unsigned long)entry->elements[i]); 2755 entry->elements[i] = page_address(page); 2756 if (card->options.performance_stats) 2757 card->perf_stats.sg_alloc_page_rx++; 2758 } 2759 } 2760 } 2761 list_del_init(&entry->list); 2762 return entry; 2763 } 2764 2765 static int qeth_init_input_buffer(struct qeth_card *card, 2766 struct qeth_qdio_buffer *buf) 2767 { 2768 struct qeth_buffer_pool_entry *pool_entry; 2769 int i; 2770 2771 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2772 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 2773 if (!buf->rx_skb) 2774 return 1; 2775 } 2776 2777 pool_entry = qeth_find_free_buffer_pool_entry(card); 2778 if (!pool_entry) 2779 return 1; 2780 2781 /* 2782 * since the buffer is accessed only from the input_tasklet 2783 * there shouldn't be a need to synchronize; also, since we use 2784 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2785 * buffers 2786 */ 2787 2788 buf->pool_entry = pool_entry; 2789 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2790 buf->buffer->element[i].length = PAGE_SIZE; 2791 buf->buffer->element[i].addr = pool_entry->elements[i]; 2792 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2793 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2794 else 2795 buf->buffer->element[i].eflags = 0; 2796 buf->buffer->element[i].sflags = 0; 2797 } 2798 return 0; 2799 } 2800 2801 int qeth_init_qdio_queues(struct qeth_card *card) 2802 { 2803 int i, j; 2804 int rc; 2805 2806 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2807 2808 /* inbound queue */ 2809 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, 2810 QDIO_MAX_BUFFERS_PER_Q); 2811 qeth_initialize_working_pool_list(card); 2812 /*give only as many buffers to hardware as we have buffer pool entries*/ 2813 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2814 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2815 card->qdio.in_q->next_buf_to_init = 2816 card->qdio.in_buf_pool.buf_count - 1; 2817 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2818 card->qdio.in_buf_pool.buf_count - 1); 2819 if (rc) { 2820 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2821 return rc; 2822 } 2823 2824 /* completion */ 2825 rc = qeth_cq_init(card); 2826 if (rc) { 2827 return rc; 2828 } 2829 2830 /* outbound queue */ 2831 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2832 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2833 QDIO_MAX_BUFFERS_PER_Q); 2834 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2835 qeth_clear_output_buffer(card->qdio.out_qs[i], 2836 card->qdio.out_qs[i]->bufs[j], 2837 QETH_QDIO_BUF_EMPTY); 2838 } 2839 card->qdio.out_qs[i]->card = card; 2840 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2841 card->qdio.out_qs[i]->do_pack = 0; 2842 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2843 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2844 atomic_set(&card->qdio.out_qs[i]->state, 2845 QETH_OUT_Q_UNLOCKED); 2846 } 2847 return 0; 2848 } 2849 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2850 2851 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2852 { 2853 switch (link_type) { 2854 case QETH_LINK_TYPE_HSTR: 2855 return 2; 2856 default: 2857 return 1; 2858 } 2859 } 2860 2861 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2862 struct qeth_ipa_cmd *cmd, __u8 command, 2863 enum qeth_prot_versions prot) 2864 { 2865 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2866 cmd->hdr.command = command; 2867 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2868 cmd->hdr.seqno = card->seqno.ipa; 2869 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2870 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2871 if (card->options.layer2) 2872 cmd->hdr.prim_version_no = 2; 2873 else 2874 cmd->hdr.prim_version_no = 1; 2875 cmd->hdr.param_count = 1; 2876 cmd->hdr.prot_version = prot; 2877 cmd->hdr.ipa_supported = 0; 2878 cmd->hdr.ipa_enabled = 0; 2879 } 2880 2881 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2882 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2883 { 2884 struct qeth_cmd_buffer *iob; 2885 struct qeth_ipa_cmd *cmd; 2886 2887 iob = qeth_get_buffer(&card->write); 2888 if (iob) { 2889 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2890 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2891 } else { 2892 dev_warn(&card->gdev->dev, 2893 "The qeth driver ran out of channel command buffers\n"); 2894 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2895 dev_name(&card->gdev->dev)); 2896 } 2897 2898 return iob; 2899 } 2900 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2901 2902 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2903 char prot_type) 2904 { 2905 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2906 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2907 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2908 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2909 } 2910 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2911 2912 /** 2913 * qeth_send_ipa_cmd() - send an IPA command 2914 * 2915 * See qeth_send_control_data() for explanation of the arguments. 2916 */ 2917 2918 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2919 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2920 unsigned long), 2921 void *reply_param) 2922 { 2923 int rc; 2924 char prot_type; 2925 2926 QETH_CARD_TEXT(card, 4, "sendipa"); 2927 2928 if (card->options.layer2) 2929 if (card->info.type == QETH_CARD_TYPE_OSN) 2930 prot_type = QETH_PROT_OSN2; 2931 else 2932 prot_type = QETH_PROT_LAYER2; 2933 else 2934 prot_type = QETH_PROT_TCPIP; 2935 qeth_prepare_ipa_cmd(card, iob, prot_type); 2936 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2937 iob, reply_cb, reply_param); 2938 if (rc == -ETIME) { 2939 qeth_clear_ipacmd_list(card); 2940 qeth_schedule_recovery(card); 2941 } 2942 return rc; 2943 } 2944 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2945 2946 static int qeth_send_startlan(struct qeth_card *card) 2947 { 2948 int rc; 2949 struct qeth_cmd_buffer *iob; 2950 2951 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2952 2953 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2954 if (!iob) 2955 return -ENOMEM; 2956 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2957 return rc; 2958 } 2959 2960 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 2961 struct qeth_reply *reply, unsigned long data) 2962 { 2963 struct qeth_ipa_cmd *cmd; 2964 2965 QETH_CARD_TEXT(card, 4, "defadpcb"); 2966 2967 cmd = (struct qeth_ipa_cmd *) data; 2968 if (cmd->hdr.return_code == 0) 2969 cmd->hdr.return_code = 2970 cmd->data.setadapterparms.hdr.return_code; 2971 return 0; 2972 } 2973 2974 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2975 struct qeth_reply *reply, unsigned long data) 2976 { 2977 struct qeth_ipa_cmd *cmd; 2978 2979 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2980 2981 cmd = (struct qeth_ipa_cmd *) data; 2982 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2983 card->info.link_type = 2984 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2985 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2986 } 2987 card->options.adp.supported_funcs = 2988 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2989 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 2990 } 2991 2992 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2993 __u32 command, __u32 cmdlen) 2994 { 2995 struct qeth_cmd_buffer *iob; 2996 struct qeth_ipa_cmd *cmd; 2997 2998 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 2999 QETH_PROT_IPV4); 3000 if (iob) { 3001 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3002 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3003 cmd->data.setadapterparms.hdr.command_code = command; 3004 cmd->data.setadapterparms.hdr.used_total = 1; 3005 cmd->data.setadapterparms.hdr.seq_no = 1; 3006 } 3007 3008 return iob; 3009 } 3010 3011 int qeth_query_setadapterparms(struct qeth_card *card) 3012 { 3013 int rc; 3014 struct qeth_cmd_buffer *iob; 3015 3016 QETH_CARD_TEXT(card, 3, "queryadp"); 3017 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3018 sizeof(struct qeth_ipacmd_setadpparms)); 3019 if (!iob) 3020 return -ENOMEM; 3021 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3022 return rc; 3023 } 3024 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3025 3026 static int qeth_query_ipassists_cb(struct qeth_card *card, 3027 struct qeth_reply *reply, unsigned long data) 3028 { 3029 struct qeth_ipa_cmd *cmd; 3030 3031 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3032 3033 cmd = (struct qeth_ipa_cmd *) data; 3034 3035 switch (cmd->hdr.return_code) { 3036 case IPA_RC_NOTSUPP: 3037 case IPA_RC_L2_UNSUPPORTED_CMD: 3038 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3039 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3040 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3041 return -0; 3042 default: 3043 if (cmd->hdr.return_code) { 3044 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3045 "rc=%d\n", 3046 dev_name(&card->gdev->dev), 3047 cmd->hdr.return_code); 3048 return 0; 3049 } 3050 } 3051 3052 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3053 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3054 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3055 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3056 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3057 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3058 } else 3059 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3060 "\n", dev_name(&card->gdev->dev)); 3061 return 0; 3062 } 3063 3064 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3065 { 3066 int rc; 3067 struct qeth_cmd_buffer *iob; 3068 3069 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3070 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3071 if (!iob) 3072 return -ENOMEM; 3073 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3074 return rc; 3075 } 3076 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3077 3078 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3079 struct qeth_reply *reply, unsigned long data) 3080 { 3081 struct qeth_ipa_cmd *cmd; 3082 struct qeth_switch_info *sw_info; 3083 struct qeth_query_switch_attributes *attrs; 3084 3085 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3086 cmd = (struct qeth_ipa_cmd *) data; 3087 sw_info = (struct qeth_switch_info *)reply->param; 3088 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3089 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3090 sw_info->capabilities = attrs->capabilities; 3091 sw_info->settings = attrs->settings; 3092 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3093 sw_info->settings); 3094 } 3095 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3096 3097 return 0; 3098 } 3099 3100 int qeth_query_switch_attributes(struct qeth_card *card, 3101 struct qeth_switch_info *sw_info) 3102 { 3103 struct qeth_cmd_buffer *iob; 3104 3105 QETH_CARD_TEXT(card, 2, "qswiattr"); 3106 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3107 return -EOPNOTSUPP; 3108 if (!netif_carrier_ok(card->dev)) 3109 return -ENOMEDIUM; 3110 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3111 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3112 if (!iob) 3113 return -ENOMEM; 3114 return qeth_send_ipa_cmd(card, iob, 3115 qeth_query_switch_attributes_cb, sw_info); 3116 } 3117 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3118 3119 static int qeth_query_setdiagass_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, "diagq:%x", rc); 3129 else 3130 card->info.diagass_support = cmd->data.diagass.ext; 3131 return 0; 3132 } 3133 3134 static int qeth_query_setdiagass(struct qeth_card *card) 3135 { 3136 struct qeth_cmd_buffer *iob; 3137 struct qeth_ipa_cmd *cmd; 3138 3139 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3140 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3141 if (!iob) 3142 return -ENOMEM; 3143 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3144 cmd->data.diagass.subcmd_len = 16; 3145 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3146 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3147 } 3148 3149 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3150 { 3151 unsigned long info = get_zeroed_page(GFP_KERNEL); 3152 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3153 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3154 struct ccw_dev_id ccwid; 3155 int level; 3156 3157 tid->chpid = card->info.chpid; 3158 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3159 tid->ssid = ccwid.ssid; 3160 tid->devno = ccwid.devno; 3161 if (!info) 3162 return; 3163 level = stsi(NULL, 0, 0, 0); 3164 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3165 tid->lparnr = info222->lpar_number; 3166 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3167 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3168 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3169 } 3170 free_page(info); 3171 return; 3172 } 3173 3174 static int qeth_hw_trap_cb(struct qeth_card *card, 3175 struct qeth_reply *reply, unsigned long data) 3176 { 3177 struct qeth_ipa_cmd *cmd; 3178 __u16 rc; 3179 3180 cmd = (struct qeth_ipa_cmd *)data; 3181 rc = cmd->hdr.return_code; 3182 if (rc) 3183 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3184 return 0; 3185 } 3186 3187 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3188 { 3189 struct qeth_cmd_buffer *iob; 3190 struct qeth_ipa_cmd *cmd; 3191 3192 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3193 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3194 if (!iob) 3195 return -ENOMEM; 3196 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3197 cmd->data.diagass.subcmd_len = 80; 3198 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3199 cmd->data.diagass.type = 1; 3200 cmd->data.diagass.action = action; 3201 switch (action) { 3202 case QETH_DIAGS_TRAP_ARM: 3203 cmd->data.diagass.options = 0x0003; 3204 cmd->data.diagass.ext = 0x00010000 + 3205 sizeof(struct qeth_trap_id); 3206 qeth_get_trap_id(card, 3207 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3208 break; 3209 case QETH_DIAGS_TRAP_DISARM: 3210 cmd->data.diagass.options = 0x0001; 3211 break; 3212 case QETH_DIAGS_TRAP_CAPTURE: 3213 break; 3214 } 3215 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3216 } 3217 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3218 3219 static int qeth_check_qdio_errors(struct qeth_card *card, 3220 struct qdio_buffer *buf, 3221 unsigned int qdio_error, 3222 const char *dbftext) 3223 { 3224 if (qdio_error) { 3225 QETH_CARD_TEXT(card, 2, dbftext); 3226 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3227 buf->element[15].sflags); 3228 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3229 buf->element[14].sflags); 3230 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3231 if ((buf->element[15].sflags) == 0x12) { 3232 card->stats.rx_dropped++; 3233 return 0; 3234 } else 3235 return 1; 3236 } 3237 return 0; 3238 } 3239 3240 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3241 { 3242 struct qeth_qdio_q *queue = card->qdio.in_q; 3243 struct list_head *lh; 3244 int count; 3245 int i; 3246 int rc; 3247 int newcount = 0; 3248 3249 count = (index < queue->next_buf_to_init)? 3250 card->qdio.in_buf_pool.buf_count - 3251 (queue->next_buf_to_init - index) : 3252 card->qdio.in_buf_pool.buf_count - 3253 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3254 /* only requeue at a certain threshold to avoid SIGAs */ 3255 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3256 for (i = queue->next_buf_to_init; 3257 i < queue->next_buf_to_init + count; ++i) { 3258 if (qeth_init_input_buffer(card, 3259 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3260 break; 3261 } else { 3262 newcount++; 3263 } 3264 } 3265 3266 if (newcount < count) { 3267 /* we are in memory shortage so we switch back to 3268 traditional skb allocation and drop packages */ 3269 atomic_set(&card->force_alloc_skb, 3); 3270 count = newcount; 3271 } else { 3272 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3273 } 3274 3275 if (!count) { 3276 i = 0; 3277 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3278 i++; 3279 if (i == card->qdio.in_buf_pool.buf_count) { 3280 QETH_CARD_TEXT(card, 2, "qsarbw"); 3281 card->reclaim_index = index; 3282 schedule_delayed_work( 3283 &card->buffer_reclaim_work, 3284 QETH_RECLAIM_WORK_TIME); 3285 } 3286 return; 3287 } 3288 3289 /* 3290 * according to old code it should be avoided to requeue all 3291 * 128 buffers in order to benefit from PCI avoidance. 3292 * this function keeps at least one buffer (the buffer at 3293 * 'index') un-requeued -> this buffer is the first buffer that 3294 * will be requeued the next time 3295 */ 3296 if (card->options.performance_stats) { 3297 card->perf_stats.inbound_do_qdio_cnt++; 3298 card->perf_stats.inbound_do_qdio_start_time = 3299 qeth_get_micros(); 3300 } 3301 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3302 queue->next_buf_to_init, count); 3303 if (card->options.performance_stats) 3304 card->perf_stats.inbound_do_qdio_time += 3305 qeth_get_micros() - 3306 card->perf_stats.inbound_do_qdio_start_time; 3307 if (rc) { 3308 QETH_CARD_TEXT(card, 2, "qinberr"); 3309 } 3310 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3311 QDIO_MAX_BUFFERS_PER_Q; 3312 } 3313 } 3314 3315 static void qeth_buffer_reclaim_work(struct work_struct *work) 3316 { 3317 struct qeth_card *card = container_of(work, struct qeth_card, 3318 buffer_reclaim_work.work); 3319 3320 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3321 qeth_queue_input_buffer(card, card->reclaim_index); 3322 } 3323 3324 static void qeth_handle_send_error(struct qeth_card *card, 3325 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3326 { 3327 int sbalf15 = buffer->buffer->element[15].sflags; 3328 3329 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3330 if (card->info.type == QETH_CARD_TYPE_IQD) { 3331 if (sbalf15 == 0) { 3332 qdio_err = 0; 3333 } else { 3334 qdio_err = 1; 3335 } 3336 } 3337 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3338 3339 if (!qdio_err) 3340 return; 3341 3342 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3343 return; 3344 3345 QETH_CARD_TEXT(card, 1, "lnkfail"); 3346 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3347 (u16)qdio_err, (u8)sbalf15); 3348 } 3349 3350 /* 3351 * Switched to packing state if the number of used buffers on a queue 3352 * reaches a certain limit. 3353 */ 3354 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3355 { 3356 if (!queue->do_pack) { 3357 if (atomic_read(&queue->used_buffers) 3358 >= QETH_HIGH_WATERMARK_PACK){ 3359 /* switch non-PACKING -> PACKING */ 3360 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3361 if (queue->card->options.performance_stats) 3362 queue->card->perf_stats.sc_dp_p++; 3363 queue->do_pack = 1; 3364 } 3365 } 3366 } 3367 3368 /* 3369 * Switches from packing to non-packing mode. If there is a packing 3370 * buffer on the queue this buffer will be prepared to be flushed. 3371 * In that case 1 is returned to inform the caller. If no buffer 3372 * has to be flushed, zero is returned. 3373 */ 3374 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3375 { 3376 struct qeth_qdio_out_buffer *buffer; 3377 int flush_count = 0; 3378 3379 if (queue->do_pack) { 3380 if (atomic_read(&queue->used_buffers) 3381 <= QETH_LOW_WATERMARK_PACK) { 3382 /* switch PACKING -> non-PACKING */ 3383 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3384 if (queue->card->options.performance_stats) 3385 queue->card->perf_stats.sc_p_dp++; 3386 queue->do_pack = 0; 3387 /* flush packing buffers */ 3388 buffer = queue->bufs[queue->next_buf_to_fill]; 3389 if ((atomic_read(&buffer->state) == 3390 QETH_QDIO_BUF_EMPTY) && 3391 (buffer->next_element_to_fill > 0)) { 3392 atomic_set(&buffer->state, 3393 QETH_QDIO_BUF_PRIMED); 3394 flush_count++; 3395 queue->next_buf_to_fill = 3396 (queue->next_buf_to_fill + 1) % 3397 QDIO_MAX_BUFFERS_PER_Q; 3398 } 3399 } 3400 } 3401 return flush_count; 3402 } 3403 3404 3405 /* 3406 * Called to flush a packing buffer if no more pci flags are on the queue. 3407 * Checks if there is a packing buffer and prepares it to be flushed. 3408 * In that case returns 1, otherwise zero. 3409 */ 3410 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue) 3411 { 3412 struct qeth_qdio_out_buffer *buffer; 3413 3414 buffer = queue->bufs[queue->next_buf_to_fill]; 3415 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3416 (buffer->next_element_to_fill > 0)) { 3417 /* it's a packing buffer */ 3418 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3419 queue->next_buf_to_fill = 3420 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3421 return 1; 3422 } 3423 return 0; 3424 } 3425 3426 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3427 int count) 3428 { 3429 struct qeth_qdio_out_buffer *buf; 3430 int rc; 3431 int i; 3432 unsigned int qdio_flags; 3433 3434 for (i = index; i < index + count; ++i) { 3435 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3436 buf = queue->bufs[bidx]; 3437 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3438 SBAL_EFLAGS_LAST_ENTRY; 3439 3440 if (queue->bufstates) 3441 queue->bufstates[bidx].user = buf; 3442 3443 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3444 continue; 3445 3446 if (!queue->do_pack) { 3447 if ((atomic_read(&queue->used_buffers) >= 3448 (QETH_HIGH_WATERMARK_PACK - 3449 QETH_WATERMARK_PACK_FUZZ)) && 3450 !atomic_read(&queue->set_pci_flags_count)) { 3451 /* it's likely that we'll go to packing 3452 * mode soon */ 3453 atomic_inc(&queue->set_pci_flags_count); 3454 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3455 } 3456 } else { 3457 if (!atomic_read(&queue->set_pci_flags_count)) { 3458 /* 3459 * there's no outstanding PCI any more, so we 3460 * have to request a PCI to be sure the the PCI 3461 * will wake at some time in the future then we 3462 * can flush packed buffers that might still be 3463 * hanging around, which can happen if no 3464 * further send was requested by the stack 3465 */ 3466 atomic_inc(&queue->set_pci_flags_count); 3467 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3468 } 3469 } 3470 } 3471 3472 netif_trans_update(queue->card->dev); 3473 if (queue->card->options.performance_stats) { 3474 queue->card->perf_stats.outbound_do_qdio_cnt++; 3475 queue->card->perf_stats.outbound_do_qdio_start_time = 3476 qeth_get_micros(); 3477 } 3478 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3479 if (atomic_read(&queue->set_pci_flags_count)) 3480 qdio_flags |= QDIO_FLAG_PCI_OUT; 3481 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3482 queue->queue_no, index, count); 3483 if (queue->card->options.performance_stats) 3484 queue->card->perf_stats.outbound_do_qdio_time += 3485 qeth_get_micros() - 3486 queue->card->perf_stats.outbound_do_qdio_start_time; 3487 atomic_add(count, &queue->used_buffers); 3488 if (rc) { 3489 queue->card->stats.tx_errors += count; 3490 /* ignore temporary SIGA errors without busy condition */ 3491 if (rc == -ENOBUFS) 3492 return; 3493 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3494 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3495 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3496 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3497 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3498 3499 /* this must not happen under normal circumstances. if it 3500 * happens something is really wrong -> recover */ 3501 qeth_schedule_recovery(queue->card); 3502 return; 3503 } 3504 if (queue->card->options.performance_stats) 3505 queue->card->perf_stats.bufs_sent += count; 3506 } 3507 3508 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3509 { 3510 int index; 3511 int flush_cnt = 0; 3512 int q_was_packing = 0; 3513 3514 /* 3515 * check if weed have to switch to non-packing mode or if 3516 * we have to get a pci flag out on the queue 3517 */ 3518 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3519 !atomic_read(&queue->set_pci_flags_count)) { 3520 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3521 QETH_OUT_Q_UNLOCKED) { 3522 /* 3523 * If we get in here, there was no action in 3524 * do_send_packet. So, we check if there is a 3525 * packing buffer to be flushed here. 3526 */ 3527 netif_stop_queue(queue->card->dev); 3528 index = queue->next_buf_to_fill; 3529 q_was_packing = queue->do_pack; 3530 /* queue->do_pack may change */ 3531 barrier(); 3532 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3533 if (!flush_cnt && 3534 !atomic_read(&queue->set_pci_flags_count)) 3535 flush_cnt += 3536 qeth_flush_buffers_on_no_pci(queue); 3537 if (queue->card->options.performance_stats && 3538 q_was_packing) 3539 queue->card->perf_stats.bufs_sent_pack += 3540 flush_cnt; 3541 if (flush_cnt) 3542 qeth_flush_buffers(queue, index, flush_cnt); 3543 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3544 } 3545 } 3546 } 3547 3548 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3549 unsigned long card_ptr) 3550 { 3551 struct qeth_card *card = (struct qeth_card *)card_ptr; 3552 3553 if (card->dev && (card->dev->flags & IFF_UP)) 3554 napi_schedule(&card->napi); 3555 } 3556 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3557 3558 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3559 { 3560 int rc; 3561 3562 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3563 rc = -1; 3564 goto out; 3565 } else { 3566 if (card->options.cq == cq) { 3567 rc = 0; 3568 goto out; 3569 } 3570 3571 if (card->state != CARD_STATE_DOWN && 3572 card->state != CARD_STATE_RECOVER) { 3573 rc = -1; 3574 goto out; 3575 } 3576 3577 qeth_free_qdio_buffers(card); 3578 card->options.cq = cq; 3579 rc = 0; 3580 } 3581 out: 3582 return rc; 3583 3584 } 3585 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3586 3587 3588 static void qeth_qdio_cq_handler(struct qeth_card *card, 3589 unsigned int qdio_err, 3590 unsigned int queue, int first_element, int count) { 3591 struct qeth_qdio_q *cq = card->qdio.c_q; 3592 int i; 3593 int rc; 3594 3595 if (!qeth_is_cq(card, queue)) 3596 goto out; 3597 3598 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3599 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3600 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3601 3602 if (qdio_err) { 3603 netif_stop_queue(card->dev); 3604 qeth_schedule_recovery(card); 3605 goto out; 3606 } 3607 3608 if (card->options.performance_stats) { 3609 card->perf_stats.cq_cnt++; 3610 card->perf_stats.cq_start_time = qeth_get_micros(); 3611 } 3612 3613 for (i = first_element; i < first_element + count; ++i) { 3614 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3615 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3616 int e; 3617 3618 e = 0; 3619 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3620 buffer->element[e].addr) { 3621 unsigned long phys_aob_addr; 3622 3623 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3624 qeth_qdio_handle_aob(card, phys_aob_addr); 3625 buffer->element[e].addr = NULL; 3626 buffer->element[e].eflags = 0; 3627 buffer->element[e].sflags = 0; 3628 buffer->element[e].length = 0; 3629 3630 ++e; 3631 } 3632 3633 buffer->element[15].eflags = 0; 3634 buffer->element[15].sflags = 0; 3635 } 3636 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3637 card->qdio.c_q->next_buf_to_init, 3638 count); 3639 if (rc) { 3640 dev_warn(&card->gdev->dev, 3641 "QDIO reported an error, rc=%i\n", rc); 3642 QETH_CARD_TEXT(card, 2, "qcqherr"); 3643 } 3644 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3645 + count) % QDIO_MAX_BUFFERS_PER_Q; 3646 3647 netif_wake_queue(card->dev); 3648 3649 if (card->options.performance_stats) { 3650 int delta_t = qeth_get_micros(); 3651 delta_t -= card->perf_stats.cq_start_time; 3652 card->perf_stats.cq_time += delta_t; 3653 } 3654 out: 3655 return; 3656 } 3657 3658 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3659 unsigned int queue, int first_elem, int count, 3660 unsigned long card_ptr) 3661 { 3662 struct qeth_card *card = (struct qeth_card *)card_ptr; 3663 3664 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3665 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3666 3667 if (qeth_is_cq(card, queue)) 3668 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3669 else if (qdio_err) 3670 qeth_schedule_recovery(card); 3671 3672 3673 } 3674 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3675 3676 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3677 unsigned int qdio_error, int __queue, int first_element, 3678 int count, unsigned long card_ptr) 3679 { 3680 struct qeth_card *card = (struct qeth_card *) card_ptr; 3681 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3682 struct qeth_qdio_out_buffer *buffer; 3683 int i; 3684 3685 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3686 if (qdio_error & QDIO_ERROR_FATAL) { 3687 QETH_CARD_TEXT(card, 2, "achkcond"); 3688 netif_stop_queue(card->dev); 3689 qeth_schedule_recovery(card); 3690 return; 3691 } 3692 if (card->options.performance_stats) { 3693 card->perf_stats.outbound_handler_cnt++; 3694 card->perf_stats.outbound_handler_start_time = 3695 qeth_get_micros(); 3696 } 3697 for (i = first_element; i < (first_element + count); ++i) { 3698 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3699 buffer = queue->bufs[bidx]; 3700 qeth_handle_send_error(card, buffer, qdio_error); 3701 3702 if (queue->bufstates && 3703 (queue->bufstates[bidx].flags & 3704 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3705 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3706 3707 if (atomic_cmpxchg(&buffer->state, 3708 QETH_QDIO_BUF_PRIMED, 3709 QETH_QDIO_BUF_PENDING) == 3710 QETH_QDIO_BUF_PRIMED) { 3711 qeth_notify_skbs(queue, buffer, 3712 TX_NOTIFY_PENDING); 3713 } 3714 buffer->aob = queue->bufstates[bidx].aob; 3715 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3716 QETH_CARD_TEXT(queue->card, 5, "aob"); 3717 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3718 virt_to_phys(buffer->aob)); 3719 if (qeth_init_qdio_out_buf(queue, bidx)) { 3720 QETH_CARD_TEXT(card, 2, "outofbuf"); 3721 qeth_schedule_recovery(card); 3722 } 3723 } else { 3724 if (card->options.cq == QETH_CQ_ENABLED) { 3725 enum iucv_tx_notify n; 3726 3727 n = qeth_compute_cq_notification( 3728 buffer->buffer->element[15].sflags, 0); 3729 qeth_notify_skbs(queue, buffer, n); 3730 } 3731 3732 qeth_clear_output_buffer(queue, buffer, 3733 QETH_QDIO_BUF_EMPTY); 3734 } 3735 qeth_cleanup_handled_pending(queue, bidx, 0); 3736 } 3737 atomic_sub(count, &queue->used_buffers); 3738 /* check if we need to do something on this outbound queue */ 3739 if (card->info.type != QETH_CARD_TYPE_IQD) 3740 qeth_check_outbound_queue(queue); 3741 3742 netif_wake_queue(queue->card->dev); 3743 if (card->options.performance_stats) 3744 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3745 card->perf_stats.outbound_handler_start_time; 3746 } 3747 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3748 3749 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3750 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3751 { 3752 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3753 return 2; 3754 return queue_num; 3755 } 3756 3757 /** 3758 * Note: Function assumes that we have 4 outbound queues. 3759 */ 3760 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3761 int ipv, int cast_type) 3762 { 3763 __be16 *tci; 3764 u8 tos; 3765 3766 if (cast_type && card->info.is_multicast_different) 3767 return card->info.is_multicast_different & 3768 (card->qdio.no_out_queues - 1); 3769 3770 switch (card->qdio.do_prio_queueing) { 3771 case QETH_PRIO_Q_ING_TOS: 3772 case QETH_PRIO_Q_ING_PREC: 3773 switch (ipv) { 3774 case 4: 3775 tos = ipv4_get_dsfield(ip_hdr(skb)); 3776 break; 3777 case 6: 3778 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3779 break; 3780 default: 3781 return card->qdio.default_out_queue; 3782 } 3783 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3784 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3785 if (tos & IPTOS_MINCOST) 3786 return qeth_cut_iqd_prio(card, 3); 3787 if (tos & IPTOS_RELIABILITY) 3788 return 2; 3789 if (tos & IPTOS_THROUGHPUT) 3790 return 1; 3791 if (tos & IPTOS_LOWDELAY) 3792 return 0; 3793 break; 3794 case QETH_PRIO_Q_ING_SKB: 3795 if (skb->priority > 5) 3796 return 0; 3797 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3798 case QETH_PRIO_Q_ING_VLAN: 3799 tci = &((struct ethhdr *)skb->data)->h_proto; 3800 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3801 return qeth_cut_iqd_prio(card, 3802 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3803 break; 3804 default: 3805 break; 3806 } 3807 return card->qdio.default_out_queue; 3808 } 3809 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3810 3811 /** 3812 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3813 * @skb: SKB address 3814 * 3815 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3816 * fragmented part of the SKB. Returns zero for linear SKB. 3817 */ 3818 int qeth_get_elements_for_frags(struct sk_buff *skb) 3819 { 3820 int cnt, elements = 0; 3821 3822 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3823 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3824 3825 elements += qeth_get_elements_for_range( 3826 (addr_t)skb_frag_address(frag), 3827 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3828 } 3829 return elements; 3830 } 3831 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3832 3833 /** 3834 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3835 * @card: qeth card structure, to check max. elems. 3836 * @skb: SKB address 3837 * @extra_elems: extra elems needed, to check against max. 3838 * @data_offset: range starts at skb->data + data_offset 3839 * 3840 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3841 * skb data, including linear part and fragments. Checks if the result plus 3842 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3843 * Note: extra_elems is not included in the returned result. 3844 */ 3845 int qeth_get_elements_no(struct qeth_card *card, 3846 struct sk_buff *skb, int extra_elems, int data_offset) 3847 { 3848 int elements = qeth_get_elements_for_range( 3849 (addr_t)skb->data + data_offset, 3850 (addr_t)skb->data + skb_headlen(skb)) + 3851 qeth_get_elements_for_frags(skb); 3852 3853 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3854 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3855 "(Number=%d / Length=%d). Discarded.\n", 3856 elements + extra_elems, skb->len); 3857 return 0; 3858 } 3859 return elements; 3860 } 3861 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3862 3863 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3864 { 3865 int hroom, inpage, rest; 3866 3867 if (((unsigned long)skb->data & PAGE_MASK) != 3868 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3869 hroom = skb_headroom(skb); 3870 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3871 rest = len - inpage; 3872 if (rest > hroom) 3873 return 1; 3874 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3875 skb->data -= rest; 3876 skb->tail -= rest; 3877 *hdr = (struct qeth_hdr *)skb->data; 3878 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3879 } 3880 return 0; 3881 } 3882 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3883 3884 static inline void __qeth_fill_buffer(struct sk_buff *skb, 3885 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, 3886 int offset) 3887 { 3888 int length = skb_headlen(skb); 3889 int length_here; 3890 int element; 3891 char *data; 3892 int first_lap, cnt; 3893 struct skb_frag_struct *frag; 3894 3895 element = *next_element_to_fill; 3896 data = skb->data; 3897 first_lap = (is_tso == 0 ? 1 : 0); 3898 3899 if (offset >= 0) { 3900 data = skb->data + offset; 3901 length -= offset; 3902 first_lap = 0; 3903 } 3904 3905 while (length > 0) { 3906 /* length_here is the remaining amount of data in this page */ 3907 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3908 if (length < length_here) 3909 length_here = length; 3910 3911 buffer->element[element].addr = data; 3912 buffer->element[element].length = length_here; 3913 length -= length_here; 3914 if (!length) { 3915 if (first_lap) 3916 if (skb_shinfo(skb)->nr_frags) 3917 buffer->element[element].eflags = 3918 SBAL_EFLAGS_FIRST_FRAG; 3919 else 3920 buffer->element[element].eflags = 0; 3921 else 3922 buffer->element[element].eflags = 3923 SBAL_EFLAGS_MIDDLE_FRAG; 3924 } else { 3925 if (first_lap) 3926 buffer->element[element].eflags = 3927 SBAL_EFLAGS_FIRST_FRAG; 3928 else 3929 buffer->element[element].eflags = 3930 SBAL_EFLAGS_MIDDLE_FRAG; 3931 } 3932 data += length_here; 3933 element++; 3934 first_lap = 0; 3935 } 3936 3937 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3938 frag = &skb_shinfo(skb)->frags[cnt]; 3939 data = (char *)page_to_phys(skb_frag_page(frag)) + 3940 frag->page_offset; 3941 length = frag->size; 3942 while (length > 0) { 3943 length_here = PAGE_SIZE - 3944 ((unsigned long) data % PAGE_SIZE); 3945 if (length < length_here) 3946 length_here = length; 3947 3948 buffer->element[element].addr = data; 3949 buffer->element[element].length = length_here; 3950 buffer->element[element].eflags = 3951 SBAL_EFLAGS_MIDDLE_FRAG; 3952 length -= length_here; 3953 data += length_here; 3954 element++; 3955 } 3956 } 3957 3958 if (buffer->element[element - 1].eflags) 3959 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3960 *next_element_to_fill = element; 3961 } 3962 3963 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 3964 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, 3965 struct qeth_hdr *hdr, int offset, int hd_len) 3966 { 3967 struct qdio_buffer *buffer; 3968 int flush_cnt = 0, hdr_len, large_send = 0; 3969 3970 buffer = buf->buffer; 3971 atomic_inc(&skb->users); 3972 skb_queue_tail(&buf->skb_list, skb); 3973 3974 /*check first on TSO ....*/ 3975 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) { 3976 int element = buf->next_element_to_fill; 3977 3978 hdr_len = sizeof(struct qeth_hdr_tso) + 3979 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len; 3980 /*fill first buffer entry only with header information */ 3981 buffer->element[element].addr = skb->data; 3982 buffer->element[element].length = hdr_len; 3983 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3984 buf->next_element_to_fill++; 3985 skb->data += hdr_len; 3986 skb->len -= hdr_len; 3987 large_send = 1; 3988 } 3989 3990 if (offset >= 0) { 3991 int element = buf->next_element_to_fill; 3992 buffer->element[element].addr = hdr; 3993 buffer->element[element].length = sizeof(struct qeth_hdr) + 3994 hd_len; 3995 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3996 buf->is_header[element] = 1; 3997 buf->next_element_to_fill++; 3998 } 3999 4000 __qeth_fill_buffer(skb, buffer, large_send, 4001 (int *)&buf->next_element_to_fill, offset); 4002 4003 if (!queue->do_pack) { 4004 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4005 /* set state to PRIMED -> will be flushed */ 4006 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4007 flush_cnt = 1; 4008 } else { 4009 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4010 if (queue->card->options.performance_stats) 4011 queue->card->perf_stats.skbs_sent_pack++; 4012 if (buf->next_element_to_fill >= 4013 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4014 /* 4015 * packed buffer if full -> set state PRIMED 4016 * -> will be flushed 4017 */ 4018 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4019 flush_cnt = 1; 4020 } 4021 } 4022 return flush_cnt; 4023 } 4024 4025 int qeth_do_send_packet_fast(struct qeth_card *card, 4026 struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4027 struct qeth_hdr *hdr, int offset, int hd_len) 4028 { 4029 struct qeth_qdio_out_buffer *buffer; 4030 int index; 4031 4032 /* spin until we get the queue ... */ 4033 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4034 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4035 /* ... now we've got the queue */ 4036 index = queue->next_buf_to_fill; 4037 buffer = queue->bufs[queue->next_buf_to_fill]; 4038 /* 4039 * check if buffer is empty to make sure that we do not 'overtake' 4040 * ourselves and try to fill a buffer that is already primed 4041 */ 4042 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4043 goto out; 4044 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % 4045 QDIO_MAX_BUFFERS_PER_Q; 4046 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4047 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4048 qeth_flush_buffers(queue, index, 1); 4049 return 0; 4050 out: 4051 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4052 return -EBUSY; 4053 } 4054 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4055 4056 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4057 struct sk_buff *skb, struct qeth_hdr *hdr, 4058 int elements_needed) 4059 { 4060 struct qeth_qdio_out_buffer *buffer; 4061 int start_index; 4062 int flush_count = 0; 4063 int do_pack = 0; 4064 int tmp; 4065 int rc = 0; 4066 4067 /* spin until we get the queue ... */ 4068 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4069 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4070 start_index = queue->next_buf_to_fill; 4071 buffer = queue->bufs[queue->next_buf_to_fill]; 4072 /* 4073 * check if buffer is empty to make sure that we do not 'overtake' 4074 * ourselves and try to fill a buffer that is already primed 4075 */ 4076 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4077 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4078 return -EBUSY; 4079 } 4080 /* check if we need to switch packing state of this queue */ 4081 qeth_switch_to_packing_if_needed(queue); 4082 if (queue->do_pack) { 4083 do_pack = 1; 4084 /* does packet fit in current buffer? */ 4085 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4086 buffer->next_element_to_fill) < elements_needed) { 4087 /* ... no -> set state PRIMED */ 4088 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4089 flush_count++; 4090 queue->next_buf_to_fill = 4091 (queue->next_buf_to_fill + 1) % 4092 QDIO_MAX_BUFFERS_PER_Q; 4093 buffer = queue->bufs[queue->next_buf_to_fill]; 4094 /* we did a step forward, so check buffer state 4095 * again */ 4096 if (atomic_read(&buffer->state) != 4097 QETH_QDIO_BUF_EMPTY) { 4098 qeth_flush_buffers(queue, start_index, 4099 flush_count); 4100 atomic_set(&queue->state, 4101 QETH_OUT_Q_UNLOCKED); 4102 return -EBUSY; 4103 } 4104 } 4105 } 4106 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0); 4107 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4108 QDIO_MAX_BUFFERS_PER_Q; 4109 flush_count += tmp; 4110 if (flush_count) 4111 qeth_flush_buffers(queue, start_index, flush_count); 4112 else if (!atomic_read(&queue->set_pci_flags_count)) 4113 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4114 /* 4115 * queue->state will go from LOCKED -> UNLOCKED or from 4116 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4117 * (switch packing state or flush buffer to get another pci flag out). 4118 * In that case we will enter this loop 4119 */ 4120 while (atomic_dec_return(&queue->state)) { 4121 flush_count = 0; 4122 start_index = queue->next_buf_to_fill; 4123 /* check if we can go back to non-packing state */ 4124 flush_count += qeth_switch_to_nonpacking_if_needed(queue); 4125 /* 4126 * check if we need to flush a packing buffer to get a pci 4127 * flag out on the queue 4128 */ 4129 if (!flush_count && !atomic_read(&queue->set_pci_flags_count)) 4130 flush_count += qeth_flush_buffers_on_no_pci(queue); 4131 if (flush_count) 4132 qeth_flush_buffers(queue, start_index, flush_count); 4133 } 4134 /* at this point the queue is UNLOCKED again */ 4135 if (queue->card->options.performance_stats && do_pack) 4136 queue->card->perf_stats.bufs_sent_pack += flush_count; 4137 4138 return rc; 4139 } 4140 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4141 4142 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4143 struct qeth_reply *reply, unsigned long data) 4144 { 4145 struct qeth_ipa_cmd *cmd; 4146 struct qeth_ipacmd_setadpparms *setparms; 4147 4148 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4149 4150 cmd = (struct qeth_ipa_cmd *) data; 4151 setparms = &(cmd->data.setadapterparms); 4152 4153 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4154 if (cmd->hdr.return_code) { 4155 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4156 setparms->data.mode = SET_PROMISC_MODE_OFF; 4157 } 4158 card->info.promisc_mode = setparms->data.mode; 4159 return 0; 4160 } 4161 4162 void qeth_setadp_promisc_mode(struct qeth_card *card) 4163 { 4164 enum qeth_ipa_promisc_modes mode; 4165 struct net_device *dev = card->dev; 4166 struct qeth_cmd_buffer *iob; 4167 struct qeth_ipa_cmd *cmd; 4168 4169 QETH_CARD_TEXT(card, 4, "setprom"); 4170 4171 if (((dev->flags & IFF_PROMISC) && 4172 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4173 (!(dev->flags & IFF_PROMISC) && 4174 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4175 return; 4176 mode = SET_PROMISC_MODE_OFF; 4177 if (dev->flags & IFF_PROMISC) 4178 mode = SET_PROMISC_MODE_ON; 4179 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4180 4181 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4182 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4183 if (!iob) 4184 return; 4185 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4186 cmd->data.setadapterparms.data.mode = mode; 4187 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4188 } 4189 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4190 4191 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4192 { 4193 struct qeth_card *card; 4194 char dbf_text[15]; 4195 4196 card = dev->ml_priv; 4197 4198 QETH_CARD_TEXT(card, 4, "chgmtu"); 4199 sprintf(dbf_text, "%8x", new_mtu); 4200 QETH_CARD_TEXT(card, 4, dbf_text); 4201 4202 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) && 4203 (!qeth_mtu_is_valid(card, new_mtu))) 4204 return -EINVAL; 4205 dev->mtu = new_mtu; 4206 return 0; 4207 } 4208 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4209 4210 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4211 { 4212 struct qeth_card *card; 4213 4214 card = dev->ml_priv; 4215 4216 QETH_CARD_TEXT(card, 5, "getstat"); 4217 4218 return &card->stats; 4219 } 4220 EXPORT_SYMBOL_GPL(qeth_get_stats); 4221 4222 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4223 struct qeth_reply *reply, unsigned long data) 4224 { 4225 struct qeth_ipa_cmd *cmd; 4226 4227 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4228 4229 cmd = (struct qeth_ipa_cmd *) data; 4230 if (!card->options.layer2 || 4231 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4232 memcpy(card->dev->dev_addr, 4233 &cmd->data.setadapterparms.data.change_addr.addr, 4234 OSA_ADDR_LEN); 4235 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4236 } 4237 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4238 return 0; 4239 } 4240 4241 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4242 { 4243 int rc; 4244 struct qeth_cmd_buffer *iob; 4245 struct qeth_ipa_cmd *cmd; 4246 4247 QETH_CARD_TEXT(card, 4, "chgmac"); 4248 4249 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4250 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4251 sizeof(struct qeth_change_addr)); 4252 if (!iob) 4253 return -ENOMEM; 4254 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4255 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4256 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; 4257 memcpy(&cmd->data.setadapterparms.data.change_addr.addr, 4258 card->dev->dev_addr, OSA_ADDR_LEN); 4259 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4260 NULL); 4261 return rc; 4262 } 4263 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4264 4265 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4266 struct qeth_reply *reply, unsigned long data) 4267 { 4268 struct qeth_ipa_cmd *cmd; 4269 struct qeth_set_access_ctrl *access_ctrl_req; 4270 int fallback = *(int *)reply->param; 4271 4272 QETH_CARD_TEXT(card, 4, "setaccb"); 4273 4274 cmd = (struct qeth_ipa_cmd *) data; 4275 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4276 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4277 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4278 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4279 cmd->data.setadapterparms.hdr.return_code); 4280 if (cmd->data.setadapterparms.hdr.return_code != 4281 SET_ACCESS_CTRL_RC_SUCCESS) 4282 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4283 card->gdev->dev.kobj.name, 4284 access_ctrl_req->subcmd_code, 4285 cmd->data.setadapterparms.hdr.return_code); 4286 switch (cmd->data.setadapterparms.hdr.return_code) { 4287 case SET_ACCESS_CTRL_RC_SUCCESS: 4288 if (card->options.isolation == ISOLATION_MODE_NONE) { 4289 dev_info(&card->gdev->dev, 4290 "QDIO data connection isolation is deactivated\n"); 4291 } else { 4292 dev_info(&card->gdev->dev, 4293 "QDIO data connection isolation is activated\n"); 4294 } 4295 break; 4296 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4297 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4298 "deactivated\n", dev_name(&card->gdev->dev)); 4299 if (fallback) 4300 card->options.isolation = card->options.prev_isolation; 4301 break; 4302 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4303 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4304 " activated\n", dev_name(&card->gdev->dev)); 4305 if (fallback) 4306 card->options.isolation = card->options.prev_isolation; 4307 break; 4308 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4309 dev_err(&card->gdev->dev, "Adapter does not " 4310 "support QDIO data connection isolation\n"); 4311 break; 4312 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4313 dev_err(&card->gdev->dev, 4314 "Adapter is dedicated. " 4315 "QDIO data connection isolation not supported\n"); 4316 if (fallback) 4317 card->options.isolation = card->options.prev_isolation; 4318 break; 4319 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4320 dev_err(&card->gdev->dev, 4321 "TSO does not permit QDIO data connection isolation\n"); 4322 if (fallback) 4323 card->options.isolation = card->options.prev_isolation; 4324 break; 4325 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4326 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4327 "support reflective relay mode\n"); 4328 if (fallback) 4329 card->options.isolation = card->options.prev_isolation; 4330 break; 4331 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4332 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4333 "enabled at the adjacent switch port"); 4334 if (fallback) 4335 card->options.isolation = card->options.prev_isolation; 4336 break; 4337 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4338 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4339 "at the adjacent switch failed\n"); 4340 break; 4341 default: 4342 /* this should never happen */ 4343 if (fallback) 4344 card->options.isolation = card->options.prev_isolation; 4345 break; 4346 } 4347 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4348 return 0; 4349 } 4350 4351 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4352 enum qeth_ipa_isolation_modes isolation, int fallback) 4353 { 4354 int rc; 4355 struct qeth_cmd_buffer *iob; 4356 struct qeth_ipa_cmd *cmd; 4357 struct qeth_set_access_ctrl *access_ctrl_req; 4358 4359 QETH_CARD_TEXT(card, 4, "setacctl"); 4360 4361 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4362 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4363 4364 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4365 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4366 sizeof(struct qeth_set_access_ctrl)); 4367 if (!iob) 4368 return -ENOMEM; 4369 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4370 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4371 access_ctrl_req->subcmd_code = isolation; 4372 4373 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4374 &fallback); 4375 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4376 return rc; 4377 } 4378 4379 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4380 { 4381 int rc = 0; 4382 4383 QETH_CARD_TEXT(card, 4, "setactlo"); 4384 4385 if ((card->info.type == QETH_CARD_TYPE_OSD || 4386 card->info.type == QETH_CARD_TYPE_OSX) && 4387 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4388 rc = qeth_setadpparms_set_access_ctrl(card, 4389 card->options.isolation, fallback); 4390 if (rc) { 4391 QETH_DBF_MESSAGE(3, 4392 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4393 card->gdev->dev.kobj.name, 4394 rc); 4395 rc = -EOPNOTSUPP; 4396 } 4397 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4398 card->options.isolation = ISOLATION_MODE_NONE; 4399 4400 dev_err(&card->gdev->dev, "Adapter does not " 4401 "support QDIO data connection isolation\n"); 4402 rc = -EOPNOTSUPP; 4403 } 4404 return rc; 4405 } 4406 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4407 4408 void qeth_tx_timeout(struct net_device *dev) 4409 { 4410 struct qeth_card *card; 4411 4412 card = dev->ml_priv; 4413 QETH_CARD_TEXT(card, 4, "txtimeo"); 4414 card->stats.tx_errors++; 4415 qeth_schedule_recovery(card); 4416 } 4417 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4418 4419 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4420 { 4421 struct qeth_card *card = dev->ml_priv; 4422 int rc = 0; 4423 4424 switch (regnum) { 4425 case MII_BMCR: /* Basic mode control register */ 4426 rc = BMCR_FULLDPLX; 4427 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4428 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4429 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4430 rc |= BMCR_SPEED100; 4431 break; 4432 case MII_BMSR: /* Basic mode status register */ 4433 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4434 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4435 BMSR_100BASE4; 4436 break; 4437 case MII_PHYSID1: /* PHYS ID 1 */ 4438 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4439 dev->dev_addr[2]; 4440 rc = (rc >> 5) & 0xFFFF; 4441 break; 4442 case MII_PHYSID2: /* PHYS ID 2 */ 4443 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4444 break; 4445 case MII_ADVERTISE: /* Advertisement control reg */ 4446 rc = ADVERTISE_ALL; 4447 break; 4448 case MII_LPA: /* Link partner ability reg */ 4449 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4450 LPA_100BASE4 | LPA_LPACK; 4451 break; 4452 case MII_EXPANSION: /* Expansion register */ 4453 break; 4454 case MII_DCOUNTER: /* disconnect counter */ 4455 break; 4456 case MII_FCSCOUNTER: /* false carrier counter */ 4457 break; 4458 case MII_NWAYTEST: /* N-way auto-neg test register */ 4459 break; 4460 case MII_RERRCOUNTER: /* rx error counter */ 4461 rc = card->stats.rx_errors; 4462 break; 4463 case MII_SREVISION: /* silicon revision */ 4464 break; 4465 case MII_RESV1: /* reserved 1 */ 4466 break; 4467 case MII_LBRERROR: /* loopback, rx, bypass error */ 4468 break; 4469 case MII_PHYADDR: /* physical address */ 4470 break; 4471 case MII_RESV2: /* reserved 2 */ 4472 break; 4473 case MII_TPISTATUS: /* TPI status for 10mbps */ 4474 break; 4475 case MII_NCONFIG: /* network interface config */ 4476 break; 4477 default: 4478 break; 4479 } 4480 return rc; 4481 } 4482 4483 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4484 struct qeth_cmd_buffer *iob, int len, 4485 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4486 unsigned long), 4487 void *reply_param) 4488 { 4489 u16 s1, s2; 4490 4491 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4492 4493 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4494 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4495 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4496 /* adjust PDU length fields in IPA_PDU_HEADER */ 4497 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4498 s2 = (u32) len; 4499 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4500 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4501 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4502 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4503 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4504 reply_cb, reply_param); 4505 } 4506 4507 static int qeth_snmp_command_cb(struct qeth_card *card, 4508 struct qeth_reply *reply, unsigned long sdata) 4509 { 4510 struct qeth_ipa_cmd *cmd; 4511 struct qeth_arp_query_info *qinfo; 4512 struct qeth_snmp_cmd *snmp; 4513 unsigned char *data; 4514 __u16 data_len; 4515 4516 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4517 4518 cmd = (struct qeth_ipa_cmd *) sdata; 4519 data = (unsigned char *)((char *)cmd - reply->offset); 4520 qinfo = (struct qeth_arp_query_info *) reply->param; 4521 snmp = &cmd->data.setadapterparms.data.snmp; 4522 4523 if (cmd->hdr.return_code) { 4524 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4525 return 0; 4526 } 4527 if (cmd->data.setadapterparms.hdr.return_code) { 4528 cmd->hdr.return_code = 4529 cmd->data.setadapterparms.hdr.return_code; 4530 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4531 return 0; 4532 } 4533 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4534 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4535 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4536 else 4537 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4538 4539 /* check if there is enough room in userspace */ 4540 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4541 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4542 cmd->hdr.return_code = IPA_RC_ENOMEM; 4543 return 0; 4544 } 4545 QETH_CARD_TEXT_(card, 4, "snore%i", 4546 cmd->data.setadapterparms.hdr.used_total); 4547 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4548 cmd->data.setadapterparms.hdr.seq_no); 4549 /*copy entries to user buffer*/ 4550 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4551 memcpy(qinfo->udata + qinfo->udata_offset, 4552 (char *)snmp, 4553 data_len + offsetof(struct qeth_snmp_cmd, data)); 4554 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4555 } else { 4556 memcpy(qinfo->udata + qinfo->udata_offset, 4557 (char *)&snmp->request, data_len); 4558 } 4559 qinfo->udata_offset += data_len; 4560 /* check if all replies received ... */ 4561 QETH_CARD_TEXT_(card, 4, "srtot%i", 4562 cmd->data.setadapterparms.hdr.used_total); 4563 QETH_CARD_TEXT_(card, 4, "srseq%i", 4564 cmd->data.setadapterparms.hdr.seq_no); 4565 if (cmd->data.setadapterparms.hdr.seq_no < 4566 cmd->data.setadapterparms.hdr.used_total) 4567 return 1; 4568 return 0; 4569 } 4570 4571 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4572 { 4573 struct qeth_cmd_buffer *iob; 4574 struct qeth_ipa_cmd *cmd; 4575 struct qeth_snmp_ureq *ureq; 4576 unsigned int req_len; 4577 struct qeth_arp_query_info qinfo = {0, }; 4578 int rc = 0; 4579 4580 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4581 4582 if (card->info.guestlan) 4583 return -EOPNOTSUPP; 4584 4585 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4586 (!card->options.layer2)) { 4587 return -EOPNOTSUPP; 4588 } 4589 /* skip 4 bytes (data_len struct member) to get req_len */ 4590 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4591 return -EFAULT; 4592 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4593 sizeof(struct qeth_ipacmd_hdr) - 4594 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4595 return -EINVAL; 4596 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4597 if (IS_ERR(ureq)) { 4598 QETH_CARD_TEXT(card, 2, "snmpnome"); 4599 return PTR_ERR(ureq); 4600 } 4601 qinfo.udata_len = ureq->hdr.data_len; 4602 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4603 if (!qinfo.udata) { 4604 kfree(ureq); 4605 return -ENOMEM; 4606 } 4607 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4608 4609 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4610 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4611 if (!iob) { 4612 rc = -ENOMEM; 4613 goto out; 4614 } 4615 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4616 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4617 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4618 qeth_snmp_command_cb, (void *)&qinfo); 4619 if (rc) 4620 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4621 QETH_CARD_IFNAME(card), rc); 4622 else { 4623 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4624 rc = -EFAULT; 4625 } 4626 out: 4627 kfree(ureq); 4628 kfree(qinfo.udata); 4629 return rc; 4630 } 4631 4632 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4633 struct qeth_reply *reply, unsigned long data) 4634 { 4635 struct qeth_ipa_cmd *cmd; 4636 struct qeth_qoat_priv *priv; 4637 char *resdata; 4638 int resdatalen; 4639 4640 QETH_CARD_TEXT(card, 3, "qoatcb"); 4641 4642 cmd = (struct qeth_ipa_cmd *)data; 4643 priv = (struct qeth_qoat_priv *)reply->param; 4644 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4645 resdata = (char *)data + 28; 4646 4647 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4648 cmd->hdr.return_code = IPA_RC_FFFF; 4649 return 0; 4650 } 4651 4652 memcpy((priv->buffer + priv->response_len), resdata, 4653 resdatalen); 4654 priv->response_len += resdatalen; 4655 4656 if (cmd->data.setadapterparms.hdr.seq_no < 4657 cmd->data.setadapterparms.hdr.used_total) 4658 return 1; 4659 return 0; 4660 } 4661 4662 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4663 { 4664 int rc = 0; 4665 struct qeth_cmd_buffer *iob; 4666 struct qeth_ipa_cmd *cmd; 4667 struct qeth_query_oat *oat_req; 4668 struct qeth_query_oat_data oat_data; 4669 struct qeth_qoat_priv priv; 4670 void __user *tmp; 4671 4672 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4673 4674 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4675 rc = -EOPNOTSUPP; 4676 goto out; 4677 } 4678 4679 if (copy_from_user(&oat_data, udata, 4680 sizeof(struct qeth_query_oat_data))) { 4681 rc = -EFAULT; 4682 goto out; 4683 } 4684 4685 priv.buffer_len = oat_data.buffer_len; 4686 priv.response_len = 0; 4687 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4688 if (!priv.buffer) { 4689 rc = -ENOMEM; 4690 goto out; 4691 } 4692 4693 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4694 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4695 sizeof(struct qeth_query_oat)); 4696 if (!iob) { 4697 rc = -ENOMEM; 4698 goto out_free; 4699 } 4700 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4701 oat_req = &cmd->data.setadapterparms.data.query_oat; 4702 oat_req->subcmd_code = oat_data.command; 4703 4704 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4705 &priv); 4706 if (!rc) { 4707 if (is_compat_task()) 4708 tmp = compat_ptr(oat_data.ptr); 4709 else 4710 tmp = (void __user *)(unsigned long)oat_data.ptr; 4711 4712 if (copy_to_user(tmp, priv.buffer, 4713 priv.response_len)) { 4714 rc = -EFAULT; 4715 goto out_free; 4716 } 4717 4718 oat_data.response_len = priv.response_len; 4719 4720 if (copy_to_user(udata, &oat_data, 4721 sizeof(struct qeth_query_oat_data))) 4722 rc = -EFAULT; 4723 } else 4724 if (rc == IPA_RC_FFFF) 4725 rc = -EFAULT; 4726 4727 out_free: 4728 kfree(priv.buffer); 4729 out: 4730 return rc; 4731 } 4732 4733 static int qeth_query_card_info_cb(struct qeth_card *card, 4734 struct qeth_reply *reply, unsigned long data) 4735 { 4736 struct qeth_ipa_cmd *cmd; 4737 struct qeth_query_card_info *card_info; 4738 struct carrier_info *carrier_info; 4739 4740 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4741 carrier_info = (struct carrier_info *)reply->param; 4742 cmd = (struct qeth_ipa_cmd *)data; 4743 card_info = &cmd->data.setadapterparms.data.card_info; 4744 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4745 carrier_info->card_type = card_info->card_type; 4746 carrier_info->port_mode = card_info->port_mode; 4747 carrier_info->port_speed = card_info->port_speed; 4748 } 4749 4750 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4751 return 0; 4752 } 4753 4754 static int qeth_query_card_info(struct qeth_card *card, 4755 struct carrier_info *carrier_info) 4756 { 4757 struct qeth_cmd_buffer *iob; 4758 4759 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4760 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4761 return -EOPNOTSUPP; 4762 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4763 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4764 if (!iob) 4765 return -ENOMEM; 4766 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4767 (void *)carrier_info); 4768 } 4769 4770 static inline int qeth_get_qdio_q_format(struct qeth_card *card) 4771 { 4772 if (card->info.type == QETH_CARD_TYPE_IQD) 4773 return QDIO_IQDIO_QFMT; 4774 else 4775 return QDIO_QETH_QFMT; 4776 } 4777 4778 static void qeth_determine_capabilities(struct qeth_card *card) 4779 { 4780 int rc; 4781 int length; 4782 char *prcd; 4783 struct ccw_device *ddev; 4784 int ddev_offline = 0; 4785 4786 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4787 ddev = CARD_DDEV(card); 4788 if (!ddev->online) { 4789 ddev_offline = 1; 4790 rc = ccw_device_set_online(ddev); 4791 if (rc) { 4792 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4793 goto out; 4794 } 4795 } 4796 4797 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4798 if (rc) { 4799 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4800 dev_name(&card->gdev->dev), rc); 4801 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4802 goto out_offline; 4803 } 4804 qeth_configure_unitaddr(card, prcd); 4805 if (ddev_offline) 4806 qeth_configure_blkt_default(card, prcd); 4807 kfree(prcd); 4808 4809 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4810 if (rc) 4811 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4812 4813 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4814 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4815 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4816 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4817 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4818 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4819 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4820 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4821 dev_info(&card->gdev->dev, 4822 "Completion Queueing supported\n"); 4823 } else { 4824 card->options.cq = QETH_CQ_NOTAVAILABLE; 4825 } 4826 4827 4828 out_offline: 4829 if (ddev_offline == 1) 4830 ccw_device_set_offline(ddev); 4831 out: 4832 return; 4833 } 4834 4835 static inline void qeth_qdio_establish_cq(struct qeth_card *card, 4836 struct qdio_buffer **in_sbal_ptrs, 4837 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) { 4838 int i; 4839 4840 if (card->options.cq == QETH_CQ_ENABLED) { 4841 int offset = QDIO_MAX_BUFFERS_PER_Q * 4842 (card->qdio.no_in_queues - 1); 4843 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1); 4844 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4845 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4846 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4847 } 4848 4849 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4850 } 4851 } 4852 4853 static int qeth_qdio_establish(struct qeth_card *card) 4854 { 4855 struct qdio_initialize init_data; 4856 char *qib_param_field; 4857 struct qdio_buffer **in_sbal_ptrs; 4858 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4859 struct qdio_buffer **out_sbal_ptrs; 4860 int i, j, k; 4861 int rc = 0; 4862 4863 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4864 4865 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4866 GFP_KERNEL); 4867 if (!qib_param_field) { 4868 rc = -ENOMEM; 4869 goto out_free_nothing; 4870 } 4871 4872 qeth_create_qib_param_field(card, qib_param_field); 4873 qeth_create_qib_param_field_blkt(card, qib_param_field); 4874 4875 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4876 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4877 GFP_KERNEL); 4878 if (!in_sbal_ptrs) { 4879 rc = -ENOMEM; 4880 goto out_free_qib_param; 4881 } 4882 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4883 in_sbal_ptrs[i] = (struct qdio_buffer *) 4884 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4885 } 4886 4887 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4888 GFP_KERNEL); 4889 if (!queue_start_poll) { 4890 rc = -ENOMEM; 4891 goto out_free_in_sbals; 4892 } 4893 for (i = 0; i < card->qdio.no_in_queues; ++i) 4894 queue_start_poll[i] = card->discipline->start_poll; 4895 4896 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4897 4898 out_sbal_ptrs = 4899 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 4900 sizeof(void *), GFP_KERNEL); 4901 if (!out_sbal_ptrs) { 4902 rc = -ENOMEM; 4903 goto out_free_queue_start_poll; 4904 } 4905 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4906 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4907 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4908 card->qdio.out_qs[i]->bufs[j]->buffer); 4909 } 4910 4911 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4912 init_data.cdev = CARD_DDEV(card); 4913 init_data.q_format = qeth_get_qdio_q_format(card); 4914 init_data.qib_param_field_format = 0; 4915 init_data.qib_param_field = qib_param_field; 4916 init_data.no_input_qs = card->qdio.no_in_queues; 4917 init_data.no_output_qs = card->qdio.no_out_queues; 4918 init_data.input_handler = card->discipline->input_handler; 4919 init_data.output_handler = card->discipline->output_handler; 4920 init_data.queue_start_poll_array = queue_start_poll; 4921 init_data.int_parm = (unsigned long) card; 4922 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4923 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4924 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4925 init_data.scan_threshold = 4926 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 4927 4928 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4929 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4930 rc = qdio_allocate(&init_data); 4931 if (rc) { 4932 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4933 goto out; 4934 } 4935 rc = qdio_establish(&init_data); 4936 if (rc) { 4937 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4938 qdio_free(CARD_DDEV(card)); 4939 } 4940 } 4941 4942 switch (card->options.cq) { 4943 case QETH_CQ_ENABLED: 4944 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4945 break; 4946 case QETH_CQ_DISABLED: 4947 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4948 break; 4949 default: 4950 break; 4951 } 4952 out: 4953 kfree(out_sbal_ptrs); 4954 out_free_queue_start_poll: 4955 kfree(queue_start_poll); 4956 out_free_in_sbals: 4957 kfree(in_sbal_ptrs); 4958 out_free_qib_param: 4959 kfree(qib_param_field); 4960 out_free_nothing: 4961 return rc; 4962 } 4963 4964 static void qeth_core_free_card(struct qeth_card *card) 4965 { 4966 4967 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 4968 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 4969 qeth_clean_channel(&card->read); 4970 qeth_clean_channel(&card->write); 4971 if (card->dev) 4972 free_netdev(card->dev); 4973 qeth_free_qdio_buffers(card); 4974 unregister_service_level(&card->qeth_service_level); 4975 kfree(card); 4976 } 4977 4978 void qeth_trace_features(struct qeth_card *card) 4979 { 4980 QETH_CARD_TEXT(card, 2, "features"); 4981 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 4982 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 4983 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 4984 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 4985 sizeof(card->info.diagass_support)); 4986 } 4987 EXPORT_SYMBOL_GPL(qeth_trace_features); 4988 4989 static struct ccw_device_id qeth_ids[] = { 4990 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 4991 .driver_info = QETH_CARD_TYPE_OSD}, 4992 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 4993 .driver_info = QETH_CARD_TYPE_IQD}, 4994 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 4995 .driver_info = QETH_CARD_TYPE_OSN}, 4996 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 4997 .driver_info = QETH_CARD_TYPE_OSM}, 4998 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 4999 .driver_info = QETH_CARD_TYPE_OSX}, 5000 {}, 5001 }; 5002 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5003 5004 static struct ccw_driver qeth_ccw_driver = { 5005 .driver = { 5006 .owner = THIS_MODULE, 5007 .name = "qeth", 5008 }, 5009 .ids = qeth_ids, 5010 .probe = ccwgroup_probe_ccwdev, 5011 .remove = ccwgroup_remove_ccwdev, 5012 }; 5013 5014 int qeth_core_hardsetup_card(struct qeth_card *card) 5015 { 5016 int retries = 3; 5017 int rc; 5018 5019 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5020 atomic_set(&card->force_alloc_skb, 0); 5021 qeth_update_from_chp_desc(card); 5022 retry: 5023 if (retries < 3) 5024 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5025 dev_name(&card->gdev->dev)); 5026 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5027 ccw_device_set_offline(CARD_DDEV(card)); 5028 ccw_device_set_offline(CARD_WDEV(card)); 5029 ccw_device_set_offline(CARD_RDEV(card)); 5030 qdio_free(CARD_DDEV(card)); 5031 rc = ccw_device_set_online(CARD_RDEV(card)); 5032 if (rc) 5033 goto retriable; 5034 rc = ccw_device_set_online(CARD_WDEV(card)); 5035 if (rc) 5036 goto retriable; 5037 rc = ccw_device_set_online(CARD_DDEV(card)); 5038 if (rc) 5039 goto retriable; 5040 retriable: 5041 if (rc == -ERESTARTSYS) { 5042 QETH_DBF_TEXT(SETUP, 2, "break1"); 5043 return rc; 5044 } else if (rc) { 5045 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5046 if (--retries < 0) 5047 goto out; 5048 else 5049 goto retry; 5050 } 5051 qeth_determine_capabilities(card); 5052 qeth_init_tokens(card); 5053 qeth_init_func_level(card); 5054 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5055 if (rc == -ERESTARTSYS) { 5056 QETH_DBF_TEXT(SETUP, 2, "break2"); 5057 return rc; 5058 } else if (rc) { 5059 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5060 if (--retries < 0) 5061 goto out; 5062 else 5063 goto retry; 5064 } 5065 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5066 if (rc == -ERESTARTSYS) { 5067 QETH_DBF_TEXT(SETUP, 2, "break3"); 5068 return rc; 5069 } else if (rc) { 5070 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5071 if (--retries < 0) 5072 goto out; 5073 else 5074 goto retry; 5075 } 5076 card->read_or_write_problem = 0; 5077 rc = qeth_mpc_initialize(card); 5078 if (rc) { 5079 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5080 goto out; 5081 } 5082 5083 rc = qeth_send_startlan(card); 5084 if (rc) { 5085 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5086 if (rc == IPA_RC_LAN_OFFLINE) { 5087 dev_warn(&card->gdev->dev, 5088 "The LAN is offline\n"); 5089 card->lan_online = 0; 5090 } else { 5091 rc = -ENODEV; 5092 goto out; 5093 } 5094 } else 5095 card->lan_online = 1; 5096 5097 card->options.ipa4.supported_funcs = 0; 5098 card->options.ipa6.supported_funcs = 0; 5099 card->options.adp.supported_funcs = 0; 5100 card->options.sbp.supported_funcs = 0; 5101 card->info.diagass_support = 0; 5102 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5103 if (rc == -ENOMEM) 5104 goto out; 5105 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5106 rc = qeth_query_setadapterparms(card); 5107 if (rc < 0) { 5108 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5109 goto out; 5110 } 5111 } 5112 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5113 rc = qeth_query_setdiagass(card); 5114 if (rc < 0) { 5115 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5116 goto out; 5117 } 5118 } 5119 return 0; 5120 out: 5121 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5122 "an error on the device\n"); 5123 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5124 dev_name(&card->gdev->dev), rc); 5125 return rc; 5126 } 5127 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5128 5129 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer, 5130 struct qdio_buffer_element *element, 5131 struct sk_buff **pskb, int offset, int *pfrag, int data_len) 5132 { 5133 struct page *page = virt_to_page(element->addr); 5134 if (*pskb == NULL) { 5135 if (qethbuffer->rx_skb) { 5136 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */ 5137 *pskb = qethbuffer->rx_skb; 5138 qethbuffer->rx_skb = NULL; 5139 } else { 5140 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 5141 if (!(*pskb)) 5142 return -ENOMEM; 5143 } 5144 5145 skb_reserve(*pskb, ETH_HLEN); 5146 if (data_len <= QETH_RX_PULL_LEN) { 5147 memcpy(skb_put(*pskb, data_len), element->addr + offset, 5148 data_len); 5149 } else { 5150 get_page(page); 5151 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN), 5152 element->addr + offset, QETH_RX_PULL_LEN); 5153 skb_fill_page_desc(*pskb, *pfrag, page, 5154 offset + QETH_RX_PULL_LEN, 5155 data_len - QETH_RX_PULL_LEN); 5156 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN; 5157 (*pskb)->len += data_len - QETH_RX_PULL_LEN; 5158 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN; 5159 (*pfrag)++; 5160 } 5161 } else { 5162 get_page(page); 5163 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len); 5164 (*pskb)->data_len += data_len; 5165 (*pskb)->len += data_len; 5166 (*pskb)->truesize += data_len; 5167 (*pfrag)++; 5168 } 5169 5170 5171 return 0; 5172 } 5173 5174 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5175 { 5176 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5177 } 5178 5179 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5180 struct qeth_qdio_buffer *qethbuffer, 5181 struct qdio_buffer_element **__element, int *__offset, 5182 struct qeth_hdr **hdr) 5183 { 5184 struct qdio_buffer_element *element = *__element; 5185 struct qdio_buffer *buffer = qethbuffer->buffer; 5186 int offset = *__offset; 5187 struct sk_buff *skb = NULL; 5188 int skb_len = 0; 5189 void *data_ptr; 5190 int data_len; 5191 int headroom = 0; 5192 int use_rx_sg = 0; 5193 int frag = 0; 5194 5195 /* qeth_hdr must not cross element boundaries */ 5196 if (element->length < offset + sizeof(struct qeth_hdr)) { 5197 if (qeth_is_last_sbale(element)) 5198 return NULL; 5199 element++; 5200 offset = 0; 5201 if (element->length < sizeof(struct qeth_hdr)) 5202 return NULL; 5203 } 5204 *hdr = element->addr + offset; 5205 5206 offset += sizeof(struct qeth_hdr); 5207 switch ((*hdr)->hdr.l2.id) { 5208 case QETH_HEADER_TYPE_LAYER2: 5209 skb_len = (*hdr)->hdr.l2.pkt_length; 5210 break; 5211 case QETH_HEADER_TYPE_LAYER3: 5212 skb_len = (*hdr)->hdr.l3.length; 5213 headroom = ETH_HLEN; 5214 break; 5215 case QETH_HEADER_TYPE_OSN: 5216 skb_len = (*hdr)->hdr.osn.pdu_length; 5217 headroom = sizeof(struct qeth_hdr); 5218 break; 5219 default: 5220 break; 5221 } 5222 5223 if (!skb_len) 5224 return NULL; 5225 5226 if (((skb_len >= card->options.rx_sg_cb) && 5227 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5228 (!atomic_read(&card->force_alloc_skb))) || 5229 (card->options.cq == QETH_CQ_ENABLED)) { 5230 use_rx_sg = 1; 5231 } else { 5232 skb = dev_alloc_skb(skb_len + headroom); 5233 if (!skb) 5234 goto no_mem; 5235 if (headroom) 5236 skb_reserve(skb, headroom); 5237 } 5238 5239 data_ptr = element->addr + offset; 5240 while (skb_len) { 5241 data_len = min(skb_len, (int)(element->length - offset)); 5242 if (data_len) { 5243 if (use_rx_sg) { 5244 if (qeth_create_skb_frag(qethbuffer, element, 5245 &skb, offset, &frag, data_len)) 5246 goto no_mem; 5247 } else { 5248 memcpy(skb_put(skb, data_len), data_ptr, 5249 data_len); 5250 } 5251 } 5252 skb_len -= data_len; 5253 if (skb_len) { 5254 if (qeth_is_last_sbale(element)) { 5255 QETH_CARD_TEXT(card, 4, "unexeob"); 5256 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5257 dev_kfree_skb_any(skb); 5258 card->stats.rx_errors++; 5259 return NULL; 5260 } 5261 element++; 5262 offset = 0; 5263 data_ptr = element->addr; 5264 } else { 5265 offset += data_len; 5266 } 5267 } 5268 *__element = element; 5269 *__offset = offset; 5270 if (use_rx_sg && card->options.performance_stats) { 5271 card->perf_stats.sg_skbs_rx++; 5272 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5273 } 5274 return skb; 5275 no_mem: 5276 if (net_ratelimit()) { 5277 QETH_CARD_TEXT(card, 2, "noskbmem"); 5278 } 5279 card->stats.rx_dropped++; 5280 return NULL; 5281 } 5282 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5283 5284 int qeth_poll(struct napi_struct *napi, int budget) 5285 { 5286 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5287 int work_done = 0; 5288 struct qeth_qdio_buffer *buffer; 5289 int done; 5290 int new_budget = budget; 5291 5292 if (card->options.performance_stats) { 5293 card->perf_stats.inbound_cnt++; 5294 card->perf_stats.inbound_start_time = qeth_get_micros(); 5295 } 5296 5297 while (1) { 5298 if (!card->rx.b_count) { 5299 card->rx.qdio_err = 0; 5300 card->rx.b_count = qdio_get_next_buffers( 5301 card->data.ccwdev, 0, &card->rx.b_index, 5302 &card->rx.qdio_err); 5303 if (card->rx.b_count <= 0) { 5304 card->rx.b_count = 0; 5305 break; 5306 } 5307 card->rx.b_element = 5308 &card->qdio.in_q->bufs[card->rx.b_index] 5309 .buffer->element[0]; 5310 card->rx.e_offset = 0; 5311 } 5312 5313 while (card->rx.b_count) { 5314 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5315 if (!(card->rx.qdio_err && 5316 qeth_check_qdio_errors(card, buffer->buffer, 5317 card->rx.qdio_err, "qinerr"))) 5318 work_done += 5319 card->discipline->process_rx_buffer( 5320 card, new_budget, &done); 5321 else 5322 done = 1; 5323 5324 if (done) { 5325 if (card->options.performance_stats) 5326 card->perf_stats.bufs_rec++; 5327 qeth_put_buffer_pool_entry(card, 5328 buffer->pool_entry); 5329 qeth_queue_input_buffer(card, card->rx.b_index); 5330 card->rx.b_count--; 5331 if (card->rx.b_count) { 5332 card->rx.b_index = 5333 (card->rx.b_index + 1) % 5334 QDIO_MAX_BUFFERS_PER_Q; 5335 card->rx.b_element = 5336 &card->qdio.in_q 5337 ->bufs[card->rx.b_index] 5338 .buffer->element[0]; 5339 card->rx.e_offset = 0; 5340 } 5341 } 5342 5343 if (work_done >= budget) 5344 goto out; 5345 else 5346 new_budget = budget - work_done; 5347 } 5348 } 5349 5350 napi_complete(napi); 5351 if (qdio_start_irq(card->data.ccwdev, 0)) 5352 napi_schedule(&card->napi); 5353 out: 5354 if (card->options.performance_stats) 5355 card->perf_stats.inbound_time += qeth_get_micros() - 5356 card->perf_stats.inbound_start_time; 5357 return work_done; 5358 } 5359 EXPORT_SYMBOL_GPL(qeth_poll); 5360 5361 int qeth_setassparms_cb(struct qeth_card *card, 5362 struct qeth_reply *reply, unsigned long data) 5363 { 5364 struct qeth_ipa_cmd *cmd; 5365 5366 QETH_CARD_TEXT(card, 4, "defadpcb"); 5367 5368 cmd = (struct qeth_ipa_cmd *) data; 5369 if (cmd->hdr.return_code == 0) { 5370 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5371 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5372 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5373 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5374 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5375 } 5376 return 0; 5377 } 5378 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5379 5380 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5381 enum qeth_ipa_funcs ipa_func, 5382 __u16 cmd_code, __u16 len, 5383 enum qeth_prot_versions prot) 5384 { 5385 struct qeth_cmd_buffer *iob; 5386 struct qeth_ipa_cmd *cmd; 5387 5388 QETH_CARD_TEXT(card, 4, "getasscm"); 5389 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5390 5391 if (iob) { 5392 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5393 cmd->data.setassparms.hdr.assist_no = ipa_func; 5394 cmd->data.setassparms.hdr.length = 8 + len; 5395 cmd->data.setassparms.hdr.command_code = cmd_code; 5396 cmd->data.setassparms.hdr.return_code = 0; 5397 cmd->data.setassparms.hdr.seq_no = 0; 5398 } 5399 5400 return iob; 5401 } 5402 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5403 5404 int qeth_send_setassparms(struct qeth_card *card, 5405 struct qeth_cmd_buffer *iob, __u16 len, long data, 5406 int (*reply_cb)(struct qeth_card *, 5407 struct qeth_reply *, unsigned long), 5408 void *reply_param) 5409 { 5410 int rc; 5411 struct qeth_ipa_cmd *cmd; 5412 5413 QETH_CARD_TEXT(card, 4, "sendassp"); 5414 5415 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5416 if (len <= sizeof(__u32)) 5417 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5418 else /* (len > sizeof(__u32)) */ 5419 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5420 5421 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5422 return rc; 5423 } 5424 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5425 5426 int qeth_send_simple_setassparms(struct qeth_card *card, 5427 enum qeth_ipa_funcs ipa_func, 5428 __u16 cmd_code, long data) 5429 { 5430 int rc; 5431 int length = 0; 5432 struct qeth_cmd_buffer *iob; 5433 5434 QETH_CARD_TEXT(card, 4, "simassp4"); 5435 if (data) 5436 length = sizeof(__u32); 5437 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5438 length, QETH_PROT_IPV4); 5439 if (!iob) 5440 return -ENOMEM; 5441 rc = qeth_send_setassparms(card, iob, length, data, 5442 qeth_setassparms_cb, NULL); 5443 return rc; 5444 } 5445 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5446 5447 static void qeth_unregister_dbf_views(void) 5448 { 5449 int x; 5450 for (x = 0; x < QETH_DBF_INFOS; x++) { 5451 debug_unregister(qeth_dbf[x].id); 5452 qeth_dbf[x].id = NULL; 5453 } 5454 } 5455 5456 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5457 { 5458 char dbf_txt_buf[32]; 5459 va_list args; 5460 5461 if (!debug_level_enabled(id, level)) 5462 return; 5463 va_start(args, fmt); 5464 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5465 va_end(args); 5466 debug_text_event(id, level, dbf_txt_buf); 5467 } 5468 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5469 5470 static int qeth_register_dbf_views(void) 5471 { 5472 int ret; 5473 int x; 5474 5475 for (x = 0; x < QETH_DBF_INFOS; x++) { 5476 /* register the areas */ 5477 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5478 qeth_dbf[x].pages, 5479 qeth_dbf[x].areas, 5480 qeth_dbf[x].len); 5481 if (qeth_dbf[x].id == NULL) { 5482 qeth_unregister_dbf_views(); 5483 return -ENOMEM; 5484 } 5485 5486 /* register a view */ 5487 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5488 if (ret) { 5489 qeth_unregister_dbf_views(); 5490 return ret; 5491 } 5492 5493 /* set a passing level */ 5494 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5495 } 5496 5497 return 0; 5498 } 5499 5500 int qeth_core_load_discipline(struct qeth_card *card, 5501 enum qeth_discipline_id discipline) 5502 { 5503 int rc = 0; 5504 mutex_lock(&qeth_mod_mutex); 5505 switch (discipline) { 5506 case QETH_DISCIPLINE_LAYER3: 5507 card->discipline = try_then_request_module( 5508 symbol_get(qeth_l3_discipline), "qeth_l3"); 5509 break; 5510 case QETH_DISCIPLINE_LAYER2: 5511 card->discipline = try_then_request_module( 5512 symbol_get(qeth_l2_discipline), "qeth_l2"); 5513 break; 5514 } 5515 if (!card->discipline) { 5516 dev_err(&card->gdev->dev, "There is no kernel module to " 5517 "support discipline %d\n", discipline); 5518 rc = -EINVAL; 5519 } 5520 mutex_unlock(&qeth_mod_mutex); 5521 return rc; 5522 } 5523 5524 void qeth_core_free_discipline(struct qeth_card *card) 5525 { 5526 if (card->options.layer2) 5527 symbol_put(qeth_l2_discipline); 5528 else 5529 symbol_put(qeth_l3_discipline); 5530 card->discipline = NULL; 5531 } 5532 5533 const struct device_type qeth_generic_devtype = { 5534 .name = "qeth_generic", 5535 .groups = qeth_generic_attr_groups, 5536 }; 5537 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5538 5539 static const struct device_type qeth_osn_devtype = { 5540 .name = "qeth_osn", 5541 .groups = qeth_osn_attr_groups, 5542 }; 5543 5544 #define DBF_NAME_LEN 20 5545 5546 struct qeth_dbf_entry { 5547 char dbf_name[DBF_NAME_LEN]; 5548 debug_info_t *dbf_info; 5549 struct list_head dbf_list; 5550 }; 5551 5552 static LIST_HEAD(qeth_dbf_list); 5553 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5554 5555 static debug_info_t *qeth_get_dbf_entry(char *name) 5556 { 5557 struct qeth_dbf_entry *entry; 5558 debug_info_t *rc = NULL; 5559 5560 mutex_lock(&qeth_dbf_list_mutex); 5561 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5562 if (strcmp(entry->dbf_name, name) == 0) { 5563 rc = entry->dbf_info; 5564 break; 5565 } 5566 } 5567 mutex_unlock(&qeth_dbf_list_mutex); 5568 return rc; 5569 } 5570 5571 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5572 { 5573 struct qeth_dbf_entry *new_entry; 5574 5575 card->debug = debug_register(name, 2, 1, 8); 5576 if (!card->debug) { 5577 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5578 goto err; 5579 } 5580 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5581 goto err_dbg; 5582 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5583 if (!new_entry) 5584 goto err_dbg; 5585 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5586 new_entry->dbf_info = card->debug; 5587 mutex_lock(&qeth_dbf_list_mutex); 5588 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5589 mutex_unlock(&qeth_dbf_list_mutex); 5590 5591 return 0; 5592 5593 err_dbg: 5594 debug_unregister(card->debug); 5595 err: 5596 return -ENOMEM; 5597 } 5598 5599 static void qeth_clear_dbf_list(void) 5600 { 5601 struct qeth_dbf_entry *entry, *tmp; 5602 5603 mutex_lock(&qeth_dbf_list_mutex); 5604 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5605 list_del(&entry->dbf_list); 5606 debug_unregister(entry->dbf_info); 5607 kfree(entry); 5608 } 5609 mutex_unlock(&qeth_dbf_list_mutex); 5610 } 5611 5612 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5613 { 5614 struct qeth_card *card; 5615 struct device *dev; 5616 int rc; 5617 unsigned long flags; 5618 char dbf_name[DBF_NAME_LEN]; 5619 5620 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5621 5622 dev = &gdev->dev; 5623 if (!get_device(dev)) 5624 return -ENODEV; 5625 5626 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5627 5628 card = qeth_alloc_card(); 5629 if (!card) { 5630 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5631 rc = -ENOMEM; 5632 goto err_dev; 5633 } 5634 5635 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5636 dev_name(&gdev->dev)); 5637 card->debug = qeth_get_dbf_entry(dbf_name); 5638 if (!card->debug) { 5639 rc = qeth_add_dbf_entry(card, dbf_name); 5640 if (rc) 5641 goto err_card; 5642 } 5643 5644 card->read.ccwdev = gdev->cdev[0]; 5645 card->write.ccwdev = gdev->cdev[1]; 5646 card->data.ccwdev = gdev->cdev[2]; 5647 dev_set_drvdata(&gdev->dev, card); 5648 card->gdev = gdev; 5649 gdev->cdev[0]->handler = qeth_irq; 5650 gdev->cdev[1]->handler = qeth_irq; 5651 gdev->cdev[2]->handler = qeth_irq; 5652 5653 rc = qeth_determine_card_type(card); 5654 if (rc) { 5655 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5656 goto err_card; 5657 } 5658 rc = qeth_setup_card(card); 5659 if (rc) { 5660 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5661 goto err_card; 5662 } 5663 5664 switch (card->info.type) { 5665 case QETH_CARD_TYPE_OSN: 5666 case QETH_CARD_TYPE_OSM: 5667 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2); 5668 if (rc) 5669 goto err_card; 5670 5671 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5672 ? card->discipline->devtype 5673 : &qeth_osn_devtype; 5674 rc = card->discipline->setup(card->gdev); 5675 if (rc) 5676 goto err_disc; 5677 break; 5678 default: 5679 gdev->dev.type = &qeth_generic_devtype; 5680 break; 5681 } 5682 5683 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5684 list_add_tail(&card->list, &qeth_core_card_list.list); 5685 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5686 5687 qeth_determine_capabilities(card); 5688 return 0; 5689 5690 err_disc: 5691 qeth_core_free_discipline(card); 5692 err_card: 5693 qeth_core_free_card(card); 5694 err_dev: 5695 put_device(dev); 5696 return rc; 5697 } 5698 5699 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5700 { 5701 unsigned long flags; 5702 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5703 5704 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5705 5706 if (card->discipline) { 5707 card->discipline->remove(gdev); 5708 qeth_core_free_discipline(card); 5709 } 5710 5711 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5712 list_del(&card->list); 5713 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5714 qeth_core_free_card(card); 5715 dev_set_drvdata(&gdev->dev, NULL); 5716 put_device(&gdev->dev); 5717 return; 5718 } 5719 5720 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5721 { 5722 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5723 int rc = 0; 5724 int def_discipline; 5725 5726 if (!card->discipline) { 5727 if (card->info.type == QETH_CARD_TYPE_IQD) 5728 def_discipline = QETH_DISCIPLINE_LAYER3; 5729 else 5730 def_discipline = QETH_DISCIPLINE_LAYER2; 5731 rc = qeth_core_load_discipline(card, def_discipline); 5732 if (rc) 5733 goto err; 5734 rc = card->discipline->setup(card->gdev); 5735 if (rc) { 5736 qeth_core_free_discipline(card); 5737 goto err; 5738 } 5739 } 5740 rc = card->discipline->set_online(gdev); 5741 err: 5742 return rc; 5743 } 5744 5745 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5746 { 5747 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5748 return card->discipline->set_offline(gdev); 5749 } 5750 5751 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5752 { 5753 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5754 qeth_set_allowed_threads(card, 0, 1); 5755 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5756 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5757 qeth_qdio_clear_card(card, 0); 5758 qeth_clear_qdio_buffers(card); 5759 qdio_free(CARD_DDEV(card)); 5760 } 5761 5762 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5763 { 5764 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5765 if (card->discipline && card->discipline->freeze) 5766 return card->discipline->freeze(gdev); 5767 return 0; 5768 } 5769 5770 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5771 { 5772 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5773 if (card->discipline && card->discipline->thaw) 5774 return card->discipline->thaw(gdev); 5775 return 0; 5776 } 5777 5778 static int qeth_core_restore(struct ccwgroup_device *gdev) 5779 { 5780 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5781 if (card->discipline && card->discipline->restore) 5782 return card->discipline->restore(gdev); 5783 return 0; 5784 } 5785 5786 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5787 .driver = { 5788 .owner = THIS_MODULE, 5789 .name = "qeth", 5790 }, 5791 .setup = qeth_core_probe_device, 5792 .remove = qeth_core_remove_device, 5793 .set_online = qeth_core_set_online, 5794 .set_offline = qeth_core_set_offline, 5795 .shutdown = qeth_core_shutdown, 5796 .prepare = NULL, 5797 .complete = NULL, 5798 .freeze = qeth_core_freeze, 5799 .thaw = qeth_core_thaw, 5800 .restore = qeth_core_restore, 5801 }; 5802 5803 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv, 5804 const char *buf, size_t count) 5805 { 5806 int err; 5807 5808 err = ccwgroup_create_dev(qeth_core_root_dev, 5809 &qeth_core_ccwgroup_driver, 3, buf); 5810 5811 return err ? err : count; 5812 } 5813 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store); 5814 5815 static struct attribute *qeth_drv_attrs[] = { 5816 &driver_attr_group.attr, 5817 NULL, 5818 }; 5819 static struct attribute_group qeth_drv_attr_group = { 5820 .attrs = qeth_drv_attrs, 5821 }; 5822 static const struct attribute_group *qeth_drv_attr_groups[] = { 5823 &qeth_drv_attr_group, 5824 NULL, 5825 }; 5826 5827 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5828 { 5829 struct qeth_card *card = dev->ml_priv; 5830 struct mii_ioctl_data *mii_data; 5831 int rc = 0; 5832 5833 if (!card) 5834 return -ENODEV; 5835 5836 if (!qeth_card_hw_is_reachable(card)) 5837 return -ENODEV; 5838 5839 if (card->info.type == QETH_CARD_TYPE_OSN) 5840 return -EPERM; 5841 5842 switch (cmd) { 5843 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5844 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5845 break; 5846 case SIOC_QETH_GET_CARD_TYPE: 5847 if ((card->info.type == QETH_CARD_TYPE_OSD || 5848 card->info.type == QETH_CARD_TYPE_OSM || 5849 card->info.type == QETH_CARD_TYPE_OSX) && 5850 !card->info.guestlan) 5851 return 1; 5852 else 5853 return 0; 5854 case SIOCGMIIPHY: 5855 mii_data = if_mii(rq); 5856 mii_data->phy_id = 0; 5857 break; 5858 case SIOCGMIIREG: 5859 mii_data = if_mii(rq); 5860 if (mii_data->phy_id != 0) 5861 rc = -EINVAL; 5862 else 5863 mii_data->val_out = qeth_mdio_read(dev, 5864 mii_data->phy_id, mii_data->reg_num); 5865 break; 5866 case SIOC_QETH_QUERY_OAT: 5867 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5868 break; 5869 default: 5870 if (card->discipline->do_ioctl) 5871 rc = card->discipline->do_ioctl(dev, rq, cmd); 5872 else 5873 rc = -EOPNOTSUPP; 5874 } 5875 if (rc) 5876 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5877 return rc; 5878 } 5879 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5880 5881 static struct { 5882 const char str[ETH_GSTRING_LEN]; 5883 } qeth_ethtool_stats_keys[] = { 5884 /* 0 */{"rx skbs"}, 5885 {"rx buffers"}, 5886 {"tx skbs"}, 5887 {"tx buffers"}, 5888 {"tx skbs no packing"}, 5889 {"tx buffers no packing"}, 5890 {"tx skbs packing"}, 5891 {"tx buffers packing"}, 5892 {"tx sg skbs"}, 5893 {"tx sg frags"}, 5894 /* 10 */{"rx sg skbs"}, 5895 {"rx sg frags"}, 5896 {"rx sg page allocs"}, 5897 {"tx large kbytes"}, 5898 {"tx large count"}, 5899 {"tx pk state ch n->p"}, 5900 {"tx pk state ch p->n"}, 5901 {"tx pk watermark low"}, 5902 {"tx pk watermark high"}, 5903 {"queue 0 buffer usage"}, 5904 /* 20 */{"queue 1 buffer usage"}, 5905 {"queue 2 buffer usage"}, 5906 {"queue 3 buffer usage"}, 5907 {"rx poll time"}, 5908 {"rx poll count"}, 5909 {"rx do_QDIO time"}, 5910 {"rx do_QDIO count"}, 5911 {"tx handler time"}, 5912 {"tx handler count"}, 5913 {"tx time"}, 5914 /* 30 */{"tx count"}, 5915 {"tx do_QDIO time"}, 5916 {"tx do_QDIO count"}, 5917 {"tx csum"}, 5918 {"tx lin"}, 5919 {"tx linfail"}, 5920 {"cq handler count"}, 5921 {"cq handler time"} 5922 }; 5923 5924 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 5925 { 5926 switch (stringset) { 5927 case ETH_SS_STATS: 5928 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 5929 default: 5930 return -EINVAL; 5931 } 5932 } 5933 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 5934 5935 void qeth_core_get_ethtool_stats(struct net_device *dev, 5936 struct ethtool_stats *stats, u64 *data) 5937 { 5938 struct qeth_card *card = dev->ml_priv; 5939 data[0] = card->stats.rx_packets - 5940 card->perf_stats.initial_rx_packets; 5941 data[1] = card->perf_stats.bufs_rec; 5942 data[2] = card->stats.tx_packets - 5943 card->perf_stats.initial_tx_packets; 5944 data[3] = card->perf_stats.bufs_sent; 5945 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 5946 - card->perf_stats.skbs_sent_pack; 5947 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 5948 data[6] = card->perf_stats.skbs_sent_pack; 5949 data[7] = card->perf_stats.bufs_sent_pack; 5950 data[8] = card->perf_stats.sg_skbs_sent; 5951 data[9] = card->perf_stats.sg_frags_sent; 5952 data[10] = card->perf_stats.sg_skbs_rx; 5953 data[11] = card->perf_stats.sg_frags_rx; 5954 data[12] = card->perf_stats.sg_alloc_page_rx; 5955 data[13] = (card->perf_stats.large_send_bytes >> 10); 5956 data[14] = card->perf_stats.large_send_cnt; 5957 data[15] = card->perf_stats.sc_dp_p; 5958 data[16] = card->perf_stats.sc_p_dp; 5959 data[17] = QETH_LOW_WATERMARK_PACK; 5960 data[18] = QETH_HIGH_WATERMARK_PACK; 5961 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 5962 data[20] = (card->qdio.no_out_queues > 1) ? 5963 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 5964 data[21] = (card->qdio.no_out_queues > 2) ? 5965 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 5966 data[22] = (card->qdio.no_out_queues > 3) ? 5967 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 5968 data[23] = card->perf_stats.inbound_time; 5969 data[24] = card->perf_stats.inbound_cnt; 5970 data[25] = card->perf_stats.inbound_do_qdio_time; 5971 data[26] = card->perf_stats.inbound_do_qdio_cnt; 5972 data[27] = card->perf_stats.outbound_handler_time; 5973 data[28] = card->perf_stats.outbound_handler_cnt; 5974 data[29] = card->perf_stats.outbound_time; 5975 data[30] = card->perf_stats.outbound_cnt; 5976 data[31] = card->perf_stats.outbound_do_qdio_time; 5977 data[32] = card->perf_stats.outbound_do_qdio_cnt; 5978 data[33] = card->perf_stats.tx_csum; 5979 data[34] = card->perf_stats.tx_lin; 5980 data[35] = card->perf_stats.tx_linfail; 5981 data[36] = card->perf_stats.cq_cnt; 5982 data[37] = card->perf_stats.cq_time; 5983 } 5984 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 5985 5986 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 5987 { 5988 switch (stringset) { 5989 case ETH_SS_STATS: 5990 memcpy(data, &qeth_ethtool_stats_keys, 5991 sizeof(qeth_ethtool_stats_keys)); 5992 break; 5993 default: 5994 WARN_ON(1); 5995 break; 5996 } 5997 } 5998 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 5999 6000 void qeth_core_get_drvinfo(struct net_device *dev, 6001 struct ethtool_drvinfo *info) 6002 { 6003 struct qeth_card *card = dev->ml_priv; 6004 6005 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6006 sizeof(info->driver)); 6007 strlcpy(info->version, "1.0", sizeof(info->version)); 6008 strlcpy(info->fw_version, card->info.mcl_level, 6009 sizeof(info->fw_version)); 6010 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6011 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6012 } 6013 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6014 6015 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6016 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6017 /* Always advertise and support all speeds up to specified, and only one */ 6018 /* specified port type. */ 6019 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6020 int maxspeed, int porttype) 6021 { 6022 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6023 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6024 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6025 6026 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6027 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6028 6029 switch (porttype) { 6030 case PORT_TP: 6031 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6032 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6033 break; 6034 case PORT_FIBRE: 6035 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6036 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6037 break; 6038 default: 6039 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6040 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6041 WARN_ON_ONCE(1); 6042 } 6043 6044 /* fallthrough from high to low, to select all legal speeds: */ 6045 switch (maxspeed) { 6046 case SPEED_10000: 6047 ethtool_link_ksettings_add_link_mode(cmd, supported, 6048 10000baseT_Full); 6049 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6050 10000baseT_Full); 6051 case SPEED_1000: 6052 ethtool_link_ksettings_add_link_mode(cmd, supported, 6053 1000baseT_Full); 6054 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6055 1000baseT_Full); 6056 ethtool_link_ksettings_add_link_mode(cmd, supported, 6057 1000baseT_Half); 6058 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6059 1000baseT_Half); 6060 case SPEED_100: 6061 ethtool_link_ksettings_add_link_mode(cmd, supported, 6062 100baseT_Full); 6063 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6064 100baseT_Full); 6065 ethtool_link_ksettings_add_link_mode(cmd, supported, 6066 100baseT_Half); 6067 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6068 100baseT_Half); 6069 case SPEED_10: 6070 ethtool_link_ksettings_add_link_mode(cmd, supported, 6071 10baseT_Full); 6072 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6073 10baseT_Full); 6074 ethtool_link_ksettings_add_link_mode(cmd, supported, 6075 10baseT_Half); 6076 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6077 10baseT_Half); 6078 /* end fallthrough */ 6079 break; 6080 default: 6081 ethtool_link_ksettings_add_link_mode(cmd, supported, 6082 10baseT_Full); 6083 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6084 10baseT_Full); 6085 ethtool_link_ksettings_add_link_mode(cmd, supported, 6086 10baseT_Half); 6087 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6088 10baseT_Half); 6089 WARN_ON_ONCE(1); 6090 } 6091 } 6092 6093 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6094 struct ethtool_link_ksettings *cmd) 6095 { 6096 struct qeth_card *card = netdev->ml_priv; 6097 enum qeth_link_types link_type; 6098 struct carrier_info carrier_info; 6099 int rc; 6100 6101 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6102 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6103 else 6104 link_type = card->info.link_type; 6105 6106 cmd->base.duplex = DUPLEX_FULL; 6107 cmd->base.autoneg = AUTONEG_ENABLE; 6108 cmd->base.phy_address = 0; 6109 cmd->base.mdio_support = 0; 6110 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6111 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6112 6113 switch (link_type) { 6114 case QETH_LINK_TYPE_FAST_ETH: 6115 case QETH_LINK_TYPE_LANE_ETH100: 6116 cmd->base.speed = SPEED_100; 6117 cmd->base.port = PORT_TP; 6118 break; 6119 case QETH_LINK_TYPE_GBIT_ETH: 6120 case QETH_LINK_TYPE_LANE_ETH1000: 6121 cmd->base.speed = SPEED_1000; 6122 cmd->base.port = PORT_FIBRE; 6123 break; 6124 case QETH_LINK_TYPE_10GBIT_ETH: 6125 cmd->base.speed = SPEED_10000; 6126 cmd->base.port = PORT_FIBRE; 6127 break; 6128 default: 6129 cmd->base.speed = SPEED_10; 6130 cmd->base.port = PORT_TP; 6131 } 6132 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6133 6134 /* Check if we can obtain more accurate information. */ 6135 /* If QUERY_CARD_INFO command is not supported or fails, */ 6136 /* just return the heuristics that was filled above. */ 6137 if (!qeth_card_hw_is_reachable(card)) 6138 return -ENODEV; 6139 rc = qeth_query_card_info(card, &carrier_info); 6140 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6141 return 0; 6142 if (rc) /* report error from the hardware operation */ 6143 return rc; 6144 /* on success, fill in the information got from the hardware */ 6145 6146 netdev_dbg(netdev, 6147 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6148 carrier_info.card_type, 6149 carrier_info.port_mode, 6150 carrier_info.port_speed); 6151 6152 /* Update attributes for which we've obtained more authoritative */ 6153 /* information, leave the rest the way they where filled above. */ 6154 switch (carrier_info.card_type) { 6155 case CARD_INFO_TYPE_1G_COPPER_A: 6156 case CARD_INFO_TYPE_1G_COPPER_B: 6157 cmd->base.port = PORT_TP; 6158 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6159 break; 6160 case CARD_INFO_TYPE_1G_FIBRE_A: 6161 case CARD_INFO_TYPE_1G_FIBRE_B: 6162 cmd->base.port = PORT_FIBRE; 6163 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6164 break; 6165 case CARD_INFO_TYPE_10G_FIBRE_A: 6166 case CARD_INFO_TYPE_10G_FIBRE_B: 6167 cmd->base.port = PORT_FIBRE; 6168 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6169 break; 6170 } 6171 6172 switch (carrier_info.port_mode) { 6173 case CARD_INFO_PORTM_FULLDUPLEX: 6174 cmd->base.duplex = DUPLEX_FULL; 6175 break; 6176 case CARD_INFO_PORTM_HALFDUPLEX: 6177 cmd->base.duplex = DUPLEX_HALF; 6178 break; 6179 } 6180 6181 switch (carrier_info.port_speed) { 6182 case CARD_INFO_PORTS_10M: 6183 cmd->base.speed = SPEED_10; 6184 break; 6185 case CARD_INFO_PORTS_100M: 6186 cmd->base.speed = SPEED_100; 6187 break; 6188 case CARD_INFO_PORTS_1G: 6189 cmd->base.speed = SPEED_1000; 6190 break; 6191 case CARD_INFO_PORTS_10G: 6192 cmd->base.speed = SPEED_10000; 6193 break; 6194 } 6195 6196 return 0; 6197 } 6198 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6199 6200 /* Callback to handle checksum offload command reply from OSA card. 6201 * Verify that required features have been enabled on the card. 6202 * Return error in hdr->return_code as this value is checked by caller. 6203 * 6204 * Always returns zero to indicate no further messages from the OSA card. 6205 */ 6206 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6207 struct qeth_reply *reply, 6208 unsigned long data) 6209 { 6210 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6211 struct qeth_checksum_cmd *chksum_cb = 6212 (struct qeth_checksum_cmd *)reply->param; 6213 6214 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6215 if (cmd->hdr.return_code) 6216 return 0; 6217 6218 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6219 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6220 chksum_cb->supported = 6221 cmd->data.setassparms.data.chksum.supported; 6222 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6223 } 6224 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6225 chksum_cb->supported = 6226 cmd->data.setassparms.data.chksum.supported; 6227 chksum_cb->enabled = 6228 cmd->data.setassparms.data.chksum.enabled; 6229 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6230 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6231 } 6232 return 0; 6233 } 6234 6235 /* Send command to OSA card and check results. */ 6236 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6237 enum qeth_ipa_funcs ipa_func, 6238 __u16 cmd_code, long data, 6239 struct qeth_checksum_cmd *chksum_cb) 6240 { 6241 struct qeth_cmd_buffer *iob; 6242 int rc = -ENOMEM; 6243 6244 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6245 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6246 sizeof(__u32), QETH_PROT_IPV4); 6247 if (iob) 6248 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6249 qeth_ipa_checksum_run_cmd_cb, 6250 chksum_cb); 6251 return rc; 6252 } 6253 6254 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6255 { 6256 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR | 6257 QETH_IPA_CHECKSUM_UDP | 6258 QETH_IPA_CHECKSUM_TCP; 6259 struct qeth_checksum_cmd chksum_cb; 6260 int rc; 6261 6262 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6263 &chksum_cb); 6264 if (!rc) { 6265 if ((required_features & chksum_cb.supported) != 6266 required_features) 6267 rc = -EIO; 6268 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6269 cstype == IPA_INBOUND_CHECKSUM) 6270 dev_warn(&card->gdev->dev, 6271 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6272 QETH_CARD_IFNAME(card)); 6273 } 6274 if (rc) { 6275 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6276 dev_warn(&card->gdev->dev, 6277 "Starting HW checksumming for %s failed, using SW checksumming\n", 6278 QETH_CARD_IFNAME(card)); 6279 return rc; 6280 } 6281 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6282 chksum_cb.supported, &chksum_cb); 6283 if (!rc) { 6284 if ((required_features & chksum_cb.enabled) != 6285 required_features) 6286 rc = -EIO; 6287 } 6288 if (rc) { 6289 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6290 dev_warn(&card->gdev->dev, 6291 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6292 QETH_CARD_IFNAME(card)); 6293 return rc; 6294 } 6295 6296 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6297 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6298 return 0; 6299 } 6300 6301 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6302 { 6303 int rc = (on) ? qeth_send_checksum_on(card, cstype) 6304 : qeth_send_simple_setassparms(card, cstype, 6305 IPA_CMD_ASS_STOP, 0); 6306 return rc ? -EIO : 0; 6307 } 6308 6309 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6310 { 6311 int rc; 6312 6313 QETH_CARD_TEXT(card, 3, "sttso"); 6314 6315 if (on) { 6316 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6317 IPA_CMD_ASS_START, 0); 6318 if (rc) { 6319 dev_warn(&card->gdev->dev, 6320 "Starting outbound TCP segmentation offload for %s failed\n", 6321 QETH_CARD_IFNAME(card)); 6322 return -EIO; 6323 } 6324 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6325 } else { 6326 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6327 IPA_CMD_ASS_STOP, 0); 6328 } 6329 return rc; 6330 } 6331 6332 /* try to restore device features on a device after recovery */ 6333 int qeth_recover_features(struct net_device *dev) 6334 { 6335 struct qeth_card *card = dev->ml_priv; 6336 netdev_features_t recover = dev->features; 6337 6338 if (recover & NETIF_F_IP_CSUM) { 6339 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM)) 6340 recover ^= NETIF_F_IP_CSUM; 6341 } 6342 if (recover & NETIF_F_RXCSUM) { 6343 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM)) 6344 recover ^= NETIF_F_RXCSUM; 6345 } 6346 if (recover & NETIF_F_TSO) { 6347 if (qeth_set_ipa_tso(card, 1)) 6348 recover ^= NETIF_F_TSO; 6349 } 6350 6351 if (recover == dev->features) 6352 return 0; 6353 6354 dev_warn(&card->gdev->dev, 6355 "Device recovery failed to restore all offload features\n"); 6356 dev->features = recover; 6357 return -EIO; 6358 } 6359 EXPORT_SYMBOL_GPL(qeth_recover_features); 6360 6361 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6362 { 6363 struct qeth_card *card = dev->ml_priv; 6364 netdev_features_t changed = dev->features ^ features; 6365 int rc = 0; 6366 6367 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6368 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6369 6370 if ((changed & NETIF_F_IP_CSUM)) { 6371 rc = qeth_set_ipa_csum(card, 6372 features & NETIF_F_IP_CSUM ? 1 : 0, 6373 IPA_OUTBOUND_CHECKSUM); 6374 if (rc) 6375 changed ^= NETIF_F_IP_CSUM; 6376 } 6377 if ((changed & NETIF_F_RXCSUM)) { 6378 rc = qeth_set_ipa_csum(card, 6379 features & NETIF_F_RXCSUM ? 1 : 0, 6380 IPA_INBOUND_CHECKSUM); 6381 if (rc) 6382 changed ^= NETIF_F_RXCSUM; 6383 } 6384 if ((changed & NETIF_F_TSO)) { 6385 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6386 if (rc) 6387 changed ^= NETIF_F_TSO; 6388 } 6389 6390 /* everything changed successfully? */ 6391 if ((dev->features ^ features) == changed) 6392 return 0; 6393 /* something went wrong. save changed features and return error */ 6394 dev->features ^= changed; 6395 return -EIO; 6396 } 6397 EXPORT_SYMBOL_GPL(qeth_set_features); 6398 6399 netdev_features_t qeth_fix_features(struct net_device *dev, 6400 netdev_features_t features) 6401 { 6402 struct qeth_card *card = dev->ml_priv; 6403 6404 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6405 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6406 features &= ~NETIF_F_IP_CSUM; 6407 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6408 features &= ~NETIF_F_RXCSUM; 6409 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 6410 features &= ~NETIF_F_TSO; 6411 dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n", 6412 QETH_CARD_IFNAME(card)); 6413 } 6414 /* if the card isn't up, remove features that require hw changes */ 6415 if (card->state == CARD_STATE_DOWN || 6416 card->state == CARD_STATE_RECOVER) 6417 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 6418 NETIF_F_TSO); 6419 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6420 return features; 6421 } 6422 EXPORT_SYMBOL_GPL(qeth_fix_features); 6423 6424 static int __init qeth_core_init(void) 6425 { 6426 int rc; 6427 6428 pr_info("loading core functions\n"); 6429 INIT_LIST_HEAD(&qeth_core_card_list.list); 6430 INIT_LIST_HEAD(&qeth_dbf_list); 6431 rwlock_init(&qeth_core_card_list.rwlock); 6432 mutex_init(&qeth_mod_mutex); 6433 6434 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6435 6436 rc = qeth_register_dbf_views(); 6437 if (rc) 6438 goto out_err; 6439 qeth_core_root_dev = root_device_register("qeth"); 6440 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6441 if (rc) 6442 goto register_err; 6443 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6444 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6445 if (!qeth_core_header_cache) { 6446 rc = -ENOMEM; 6447 goto slab_err; 6448 } 6449 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6450 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6451 if (!qeth_qdio_outbuf_cache) { 6452 rc = -ENOMEM; 6453 goto cqslab_err; 6454 } 6455 rc = ccw_driver_register(&qeth_ccw_driver); 6456 if (rc) 6457 goto ccw_err; 6458 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6459 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6460 if (rc) 6461 goto ccwgroup_err; 6462 6463 return 0; 6464 6465 ccwgroup_err: 6466 ccw_driver_unregister(&qeth_ccw_driver); 6467 ccw_err: 6468 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6469 cqslab_err: 6470 kmem_cache_destroy(qeth_core_header_cache); 6471 slab_err: 6472 root_device_unregister(qeth_core_root_dev); 6473 register_err: 6474 qeth_unregister_dbf_views(); 6475 out_err: 6476 pr_err("Initializing the qeth device driver failed\n"); 6477 return rc; 6478 } 6479 6480 static void __exit qeth_core_exit(void) 6481 { 6482 qeth_clear_dbf_list(); 6483 destroy_workqueue(qeth_wq); 6484 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6485 ccw_driver_unregister(&qeth_ccw_driver); 6486 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6487 kmem_cache_destroy(qeth_core_header_cache); 6488 root_device_unregister(qeth_core_root_dev); 6489 qeth_unregister_dbf_views(); 6490 pr_info("core functions removed\n"); 6491 } 6492 6493 module_init(qeth_core_init); 6494 module_exit(qeth_core_exit); 6495 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6496 MODULE_DESCRIPTION("qeth core functions"); 6497 MODULE_LICENSE("GPL"); 6498