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 int qeth_issue_next_read(struct qeth_card *); 59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 61 static void qeth_free_buffer_pool(struct qeth_card *); 62 static int qeth_qdio_establish(struct qeth_card *); 63 static void qeth_free_qdio_buffers(struct qeth_card *); 64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 65 struct qeth_qdio_out_buffer *buf, 66 enum iucv_tx_notify notification); 67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 69 struct qeth_qdio_out_buffer *buf, 70 enum qeth_qdio_buffer_states newbufstate); 71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 72 73 struct workqueue_struct *qeth_wq; 74 EXPORT_SYMBOL_GPL(qeth_wq); 75 76 int qeth_card_hw_is_reachable(struct qeth_card *card) 77 { 78 return (card->state == CARD_STATE_SOFTSETUP) || 79 (card->state == CARD_STATE_UP); 80 } 81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 82 83 static void qeth_close_dev_handler(struct work_struct *work) 84 { 85 struct qeth_card *card; 86 87 card = container_of(work, struct qeth_card, close_dev_work); 88 QETH_CARD_TEXT(card, 2, "cldevhdl"); 89 rtnl_lock(); 90 dev_close(card->dev); 91 rtnl_unlock(); 92 ccwgroup_set_offline(card->gdev); 93 } 94 95 void qeth_close_dev(struct qeth_card *card) 96 { 97 QETH_CARD_TEXT(card, 2, "cldevsubm"); 98 queue_work(qeth_wq, &card->close_dev_work); 99 } 100 EXPORT_SYMBOL_GPL(qeth_close_dev); 101 102 static inline const char *qeth_get_cardname(struct qeth_card *card) 103 { 104 if (card->info.guestlan) { 105 switch (card->info.type) { 106 case QETH_CARD_TYPE_OSD: 107 return " Virtual NIC QDIO"; 108 case QETH_CARD_TYPE_IQD: 109 return " Virtual NIC Hiper"; 110 case QETH_CARD_TYPE_OSM: 111 return " Virtual NIC QDIO - OSM"; 112 case QETH_CARD_TYPE_OSX: 113 return " Virtual NIC QDIO - OSX"; 114 default: 115 return " unknown"; 116 } 117 } else { 118 switch (card->info.type) { 119 case QETH_CARD_TYPE_OSD: 120 return " OSD Express"; 121 case QETH_CARD_TYPE_IQD: 122 return " HiperSockets"; 123 case QETH_CARD_TYPE_OSN: 124 return " OSN QDIO"; 125 case QETH_CARD_TYPE_OSM: 126 return " OSM QDIO"; 127 case QETH_CARD_TYPE_OSX: 128 return " OSX QDIO"; 129 default: 130 return " unknown"; 131 } 132 } 133 return " n/a"; 134 } 135 136 /* max length to be returned: 14 */ 137 const char *qeth_get_cardname_short(struct qeth_card *card) 138 { 139 if (card->info.guestlan) { 140 switch (card->info.type) { 141 case QETH_CARD_TYPE_OSD: 142 return "Virt.NIC QDIO"; 143 case QETH_CARD_TYPE_IQD: 144 return "Virt.NIC Hiper"; 145 case QETH_CARD_TYPE_OSM: 146 return "Virt.NIC OSM"; 147 case QETH_CARD_TYPE_OSX: 148 return "Virt.NIC OSX"; 149 default: 150 return "unknown"; 151 } 152 } else { 153 switch (card->info.type) { 154 case QETH_CARD_TYPE_OSD: 155 switch (card->info.link_type) { 156 case QETH_LINK_TYPE_FAST_ETH: 157 return "OSD_100"; 158 case QETH_LINK_TYPE_HSTR: 159 return "HSTR"; 160 case QETH_LINK_TYPE_GBIT_ETH: 161 return "OSD_1000"; 162 case QETH_LINK_TYPE_10GBIT_ETH: 163 return "OSD_10GIG"; 164 case QETH_LINK_TYPE_LANE_ETH100: 165 return "OSD_FE_LANE"; 166 case QETH_LINK_TYPE_LANE_TR: 167 return "OSD_TR_LANE"; 168 case QETH_LINK_TYPE_LANE_ETH1000: 169 return "OSD_GbE_LANE"; 170 case QETH_LINK_TYPE_LANE: 171 return "OSD_ATM_LANE"; 172 default: 173 return "OSD_Express"; 174 } 175 case QETH_CARD_TYPE_IQD: 176 return "HiperSockets"; 177 case QETH_CARD_TYPE_OSN: 178 return "OSN"; 179 case QETH_CARD_TYPE_OSM: 180 return "OSM_1000"; 181 case QETH_CARD_TYPE_OSX: 182 return "OSX_10GIG"; 183 default: 184 return "unknown"; 185 } 186 } 187 return "n/a"; 188 } 189 190 void qeth_set_recovery_task(struct qeth_card *card) 191 { 192 card->recovery_task = current; 193 } 194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 195 196 void qeth_clear_recovery_task(struct qeth_card *card) 197 { 198 card->recovery_task = NULL; 199 } 200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 201 202 static bool qeth_is_recovery_task(const struct qeth_card *card) 203 { 204 return card->recovery_task == current; 205 } 206 207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 208 int clear_start_mask) 209 { 210 unsigned long flags; 211 212 spin_lock_irqsave(&card->thread_mask_lock, flags); 213 card->thread_allowed_mask = threads; 214 if (clear_start_mask) 215 card->thread_start_mask &= threads; 216 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 217 wake_up(&card->wait_q); 218 } 219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 220 221 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 222 { 223 unsigned long flags; 224 int rc = 0; 225 226 spin_lock_irqsave(&card->thread_mask_lock, flags); 227 rc = (card->thread_running_mask & threads); 228 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 229 return rc; 230 } 231 EXPORT_SYMBOL_GPL(qeth_threads_running); 232 233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 234 { 235 if (qeth_is_recovery_task(card)) 236 return 0; 237 return wait_event_interruptible(card->wait_q, 238 qeth_threads_running(card, threads) == 0); 239 } 240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 241 242 void qeth_clear_working_pool_list(struct qeth_card *card) 243 { 244 struct qeth_buffer_pool_entry *pool_entry, *tmp; 245 246 QETH_CARD_TEXT(card, 5, "clwrklst"); 247 list_for_each_entry_safe(pool_entry, tmp, 248 &card->qdio.in_buf_pool.entry_list, list){ 249 list_del(&pool_entry->list); 250 } 251 } 252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 253 254 static int qeth_alloc_buffer_pool(struct qeth_card *card) 255 { 256 struct qeth_buffer_pool_entry *pool_entry; 257 void *ptr; 258 int i, j; 259 260 QETH_CARD_TEXT(card, 5, "alocpool"); 261 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 262 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 263 if (!pool_entry) { 264 qeth_free_buffer_pool(card); 265 return -ENOMEM; 266 } 267 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 268 ptr = (void *) __get_free_page(GFP_KERNEL); 269 if (!ptr) { 270 while (j > 0) 271 free_page((unsigned long) 272 pool_entry->elements[--j]); 273 kfree(pool_entry); 274 qeth_free_buffer_pool(card); 275 return -ENOMEM; 276 } 277 pool_entry->elements[j] = ptr; 278 } 279 list_add(&pool_entry->init_list, 280 &card->qdio.init_pool.entry_list); 281 } 282 return 0; 283 } 284 285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 286 { 287 QETH_CARD_TEXT(card, 2, "realcbp"); 288 289 if ((card->state != CARD_STATE_DOWN) && 290 (card->state != CARD_STATE_RECOVER)) 291 return -EPERM; 292 293 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 294 qeth_clear_working_pool_list(card); 295 qeth_free_buffer_pool(card); 296 card->qdio.in_buf_pool.buf_count = bufcnt; 297 card->qdio.init_pool.buf_count = bufcnt; 298 return qeth_alloc_buffer_pool(card); 299 } 300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 301 302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 303 { 304 if (!q) 305 return; 306 307 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 308 kfree(q); 309 } 310 311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 312 { 313 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 314 int i; 315 316 if (!q) 317 return NULL; 318 319 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 320 kfree(q); 321 return NULL; 322 } 323 324 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 325 q->bufs[i].buffer = q->qdio_bufs[i]; 326 327 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 328 return q; 329 } 330 331 static inline int qeth_cq_init(struct qeth_card *card) 332 { 333 int rc; 334 335 if (card->options.cq == QETH_CQ_ENABLED) { 336 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 337 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 338 QDIO_MAX_BUFFERS_PER_Q); 339 card->qdio.c_q->next_buf_to_init = 127; 340 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 341 card->qdio.no_in_queues - 1, 0, 342 127); 343 if (rc) { 344 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 345 goto out; 346 } 347 } 348 rc = 0; 349 out: 350 return rc; 351 } 352 353 static inline int qeth_alloc_cq(struct qeth_card *card) 354 { 355 int rc; 356 357 if (card->options.cq == QETH_CQ_ENABLED) { 358 int i; 359 struct qdio_outbuf_state *outbuf_states; 360 361 QETH_DBF_TEXT(SETUP, 2, "cqon"); 362 card->qdio.c_q = qeth_alloc_qdio_queue(); 363 if (!card->qdio.c_q) { 364 rc = -1; 365 goto kmsg_out; 366 } 367 card->qdio.no_in_queues = 2; 368 card->qdio.out_bufstates = 369 kzalloc(card->qdio.no_out_queues * 370 QDIO_MAX_BUFFERS_PER_Q * 371 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 372 outbuf_states = card->qdio.out_bufstates; 373 if (outbuf_states == NULL) { 374 rc = -1; 375 goto free_cq_out; 376 } 377 for (i = 0; i < card->qdio.no_out_queues; ++i) { 378 card->qdio.out_qs[i]->bufstates = outbuf_states; 379 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 380 } 381 } else { 382 QETH_DBF_TEXT(SETUP, 2, "nocq"); 383 card->qdio.c_q = NULL; 384 card->qdio.no_in_queues = 1; 385 } 386 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 387 rc = 0; 388 out: 389 return rc; 390 free_cq_out: 391 qeth_free_qdio_queue(card->qdio.c_q); 392 card->qdio.c_q = NULL; 393 kmsg_out: 394 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 395 goto out; 396 } 397 398 static inline void qeth_free_cq(struct qeth_card *card) 399 { 400 if (card->qdio.c_q) { 401 --card->qdio.no_in_queues; 402 qeth_free_qdio_queue(card->qdio.c_q); 403 card->qdio.c_q = NULL; 404 } 405 kfree(card->qdio.out_bufstates); 406 card->qdio.out_bufstates = NULL; 407 } 408 409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 410 int delayed) { 411 enum iucv_tx_notify n; 412 413 switch (sbalf15) { 414 case 0: 415 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 416 break; 417 case 4: 418 case 16: 419 case 17: 420 case 18: 421 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 422 TX_NOTIFY_UNREACHABLE; 423 break; 424 default: 425 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 426 TX_NOTIFY_GENERALERROR; 427 break; 428 } 429 430 return n; 431 } 432 433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, 434 int bidx, int forced_cleanup) 435 { 436 if (q->card->options.cq != QETH_CQ_ENABLED) 437 return; 438 439 if (q->bufs[bidx]->next_pending != NULL) { 440 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 441 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 442 443 while (c) { 444 if (forced_cleanup || 445 atomic_read(&c->state) == 446 QETH_QDIO_BUF_HANDLED_DELAYED) { 447 struct qeth_qdio_out_buffer *f = c; 448 QETH_CARD_TEXT(f->q->card, 5, "fp"); 449 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 450 /* release here to avoid interleaving between 451 outbound tasklet and inbound tasklet 452 regarding notifications and lifecycle */ 453 qeth_release_skbs(c); 454 455 c = f->next_pending; 456 WARN_ON_ONCE(head->next_pending != f); 457 head->next_pending = c; 458 kmem_cache_free(qeth_qdio_outbuf_cache, f); 459 } else { 460 head = c; 461 c = c->next_pending; 462 } 463 464 } 465 } 466 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 467 QETH_QDIO_BUF_HANDLED_DELAYED)) { 468 /* for recovery situations */ 469 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 470 qeth_init_qdio_out_buf(q, bidx); 471 QETH_CARD_TEXT(q->card, 2, "clprecov"); 472 } 473 } 474 475 476 static inline void qeth_qdio_handle_aob(struct qeth_card *card, 477 unsigned long phys_aob_addr) { 478 struct qaob *aob; 479 struct qeth_qdio_out_buffer *buffer; 480 enum iucv_tx_notify notification; 481 482 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 483 QETH_CARD_TEXT(card, 5, "haob"); 484 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 485 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 486 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 487 488 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 489 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 490 notification = TX_NOTIFY_OK; 491 } else { 492 WARN_ON_ONCE(atomic_read(&buffer->state) != 493 QETH_QDIO_BUF_PENDING); 494 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 495 notification = TX_NOTIFY_DELAYED_OK; 496 } 497 498 if (aob->aorc != 0) { 499 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 500 notification = qeth_compute_cq_notification(aob->aorc, 1); 501 } 502 qeth_notify_skbs(buffer->q, buffer, notification); 503 504 buffer->aob = NULL; 505 qeth_clear_output_buffer(buffer->q, buffer, 506 QETH_QDIO_BUF_HANDLED_DELAYED); 507 508 /* from here on: do not touch buffer anymore */ 509 qdio_release_aob(aob); 510 } 511 512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 513 { 514 return card->options.cq == QETH_CQ_ENABLED && 515 card->qdio.c_q != NULL && 516 queue != 0 && 517 queue == card->qdio.no_in_queues - 1; 518 } 519 520 521 static int qeth_issue_next_read(struct qeth_card *card) 522 { 523 int rc; 524 struct qeth_cmd_buffer *iob; 525 526 QETH_CARD_TEXT(card, 5, "issnxrd"); 527 if (card->read.state != CH_STATE_UP) 528 return -EIO; 529 iob = qeth_get_buffer(&card->read); 530 if (!iob) { 531 dev_warn(&card->gdev->dev, "The qeth device driver " 532 "failed to recover an error on the device\n"); 533 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 534 "available\n", dev_name(&card->gdev->dev)); 535 return -ENOMEM; 536 } 537 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 538 QETH_CARD_TEXT(card, 6, "noirqpnd"); 539 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 540 (addr_t) iob, 0, 0); 541 if (rc) { 542 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 543 "rc=%i\n", dev_name(&card->gdev->dev), rc); 544 atomic_set(&card->read.irq_pending, 0); 545 card->read_or_write_problem = 1; 546 qeth_schedule_recovery(card); 547 wake_up(&card->wait_q); 548 } 549 return rc; 550 } 551 552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 553 { 554 struct qeth_reply *reply; 555 556 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 557 if (reply) { 558 atomic_set(&reply->refcnt, 1); 559 atomic_set(&reply->received, 0); 560 reply->card = card; 561 } 562 return reply; 563 } 564 565 static void qeth_get_reply(struct qeth_reply *reply) 566 { 567 WARN_ON(atomic_read(&reply->refcnt) <= 0); 568 atomic_inc(&reply->refcnt); 569 } 570 571 static void qeth_put_reply(struct qeth_reply *reply) 572 { 573 WARN_ON(atomic_read(&reply->refcnt) <= 0); 574 if (atomic_dec_and_test(&reply->refcnt)) 575 kfree(reply); 576 } 577 578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 579 struct qeth_card *card) 580 { 581 char *ipa_name; 582 int com = cmd->hdr.command; 583 ipa_name = qeth_get_ipa_cmd_name(com); 584 if (rc) 585 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 586 "x%X \"%s\"\n", 587 ipa_name, com, dev_name(&card->gdev->dev), 588 QETH_CARD_IFNAME(card), rc, 589 qeth_get_ipa_msg(rc)); 590 else 591 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 592 ipa_name, com, dev_name(&card->gdev->dev), 593 QETH_CARD_IFNAME(card)); 594 } 595 596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 597 struct qeth_cmd_buffer *iob) 598 { 599 struct qeth_ipa_cmd *cmd = NULL; 600 601 QETH_CARD_TEXT(card, 5, "chkipad"); 602 if (IS_IPA(iob->data)) { 603 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 604 if (IS_IPA_REPLY(cmd)) { 605 if (cmd->hdr.command != IPA_CMD_SETCCID && 606 cmd->hdr.command != IPA_CMD_DELCCID && 607 cmd->hdr.command != IPA_CMD_MODCCID && 608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 609 qeth_issue_ipa_msg(cmd, 610 cmd->hdr.return_code, card); 611 return cmd; 612 } else { 613 switch (cmd->hdr.command) { 614 case IPA_CMD_STOPLAN: 615 if (cmd->hdr.return_code == 616 IPA_RC_VEPA_TO_VEB_TRANSITION) { 617 dev_err(&card->gdev->dev, 618 "Interface %s is down because the " 619 "adjacent port is no longer in " 620 "reflective relay mode\n", 621 QETH_CARD_IFNAME(card)); 622 qeth_close_dev(card); 623 } else { 624 dev_warn(&card->gdev->dev, 625 "The link for interface %s on CHPID" 626 " 0x%X failed\n", 627 QETH_CARD_IFNAME(card), 628 card->info.chpid); 629 qeth_issue_ipa_msg(cmd, 630 cmd->hdr.return_code, card); 631 } 632 card->lan_online = 0; 633 if (card->dev && netif_carrier_ok(card->dev)) 634 netif_carrier_off(card->dev); 635 return NULL; 636 case IPA_CMD_STARTLAN: 637 dev_info(&card->gdev->dev, 638 "The link for %s on CHPID 0x%X has" 639 " been restored\n", 640 QETH_CARD_IFNAME(card), 641 card->info.chpid); 642 netif_carrier_on(card->dev); 643 card->lan_online = 1; 644 if (card->info.hwtrap) 645 card->info.hwtrap = 2; 646 qeth_schedule_recovery(card); 647 return NULL; 648 case IPA_CMD_SETBRIDGEPORT_IQD: 649 case IPA_CMD_SETBRIDGEPORT_OSA: 650 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 651 if (card->discipline->control_event_handler 652 (card, cmd)) 653 return cmd; 654 else 655 return NULL; 656 case IPA_CMD_MODCCID: 657 return cmd; 658 case IPA_CMD_REGISTER_LOCAL_ADDR: 659 QETH_CARD_TEXT(card, 3, "irla"); 660 break; 661 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 662 QETH_CARD_TEXT(card, 3, "urla"); 663 break; 664 default: 665 QETH_DBF_MESSAGE(2, "Received data is IPA " 666 "but not a reply!\n"); 667 break; 668 } 669 } 670 } 671 return cmd; 672 } 673 674 void qeth_clear_ipacmd_list(struct qeth_card *card) 675 { 676 struct qeth_reply *reply, *r; 677 unsigned long flags; 678 679 QETH_CARD_TEXT(card, 4, "clipalst"); 680 681 spin_lock_irqsave(&card->lock, flags); 682 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 683 qeth_get_reply(reply); 684 reply->rc = -EIO; 685 atomic_inc(&reply->received); 686 list_del_init(&reply->list); 687 wake_up(&reply->wait_q); 688 qeth_put_reply(reply); 689 } 690 spin_unlock_irqrestore(&card->lock, flags); 691 atomic_set(&card->write.irq_pending, 0); 692 } 693 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 694 695 static int qeth_check_idx_response(struct qeth_card *card, 696 unsigned char *buffer) 697 { 698 if (!buffer) 699 return 0; 700 701 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 702 if ((buffer[2] & 0xc0) == 0xc0) { 703 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 704 "with cause code 0x%02x%s\n", 705 buffer[4], 706 ((buffer[4] == 0x22) ? 707 " -- try another portname" : "")); 708 QETH_CARD_TEXT(card, 2, "ckidxres"); 709 QETH_CARD_TEXT(card, 2, " idxterm"); 710 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 711 if (buffer[4] == 0xf6) { 712 dev_err(&card->gdev->dev, 713 "The qeth device is not configured " 714 "for the OSI layer required by z/VM\n"); 715 return -EPERM; 716 } 717 return -EIO; 718 } 719 return 0; 720 } 721 722 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 723 { 724 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 725 dev_get_drvdata(&cdev->dev))->dev); 726 return card; 727 } 728 729 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 730 __u32 len) 731 { 732 struct qeth_card *card; 733 734 card = CARD_FROM_CDEV(channel->ccwdev); 735 QETH_CARD_TEXT(card, 4, "setupccw"); 736 if (channel == &card->read) 737 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 738 else 739 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 740 channel->ccw.count = len; 741 channel->ccw.cda = (__u32) __pa(iob); 742 } 743 744 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 745 { 746 __u8 index; 747 748 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 749 index = channel->io_buf_no; 750 do { 751 if (channel->iob[index].state == BUF_STATE_FREE) { 752 channel->iob[index].state = BUF_STATE_LOCKED; 753 channel->io_buf_no = (channel->io_buf_no + 1) % 754 QETH_CMD_BUFFER_NO; 755 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 756 return channel->iob + index; 757 } 758 index = (index + 1) % QETH_CMD_BUFFER_NO; 759 } while (index != channel->io_buf_no); 760 761 return NULL; 762 } 763 764 void qeth_release_buffer(struct qeth_channel *channel, 765 struct qeth_cmd_buffer *iob) 766 { 767 unsigned long flags; 768 769 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 770 spin_lock_irqsave(&channel->iob_lock, flags); 771 memset(iob->data, 0, QETH_BUFSIZE); 772 iob->state = BUF_STATE_FREE; 773 iob->callback = qeth_send_control_data_cb; 774 iob->rc = 0; 775 spin_unlock_irqrestore(&channel->iob_lock, flags); 776 wake_up(&channel->wait_q); 777 } 778 EXPORT_SYMBOL_GPL(qeth_release_buffer); 779 780 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 781 { 782 struct qeth_cmd_buffer *buffer = NULL; 783 unsigned long flags; 784 785 spin_lock_irqsave(&channel->iob_lock, flags); 786 buffer = __qeth_get_buffer(channel); 787 spin_unlock_irqrestore(&channel->iob_lock, flags); 788 return buffer; 789 } 790 791 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 792 { 793 struct qeth_cmd_buffer *buffer; 794 wait_event(channel->wait_q, 795 ((buffer = qeth_get_buffer(channel)) != NULL)); 796 return buffer; 797 } 798 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 799 800 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 801 { 802 int cnt; 803 804 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 805 qeth_release_buffer(channel, &channel->iob[cnt]); 806 channel->buf_no = 0; 807 channel->io_buf_no = 0; 808 } 809 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 810 811 static void qeth_send_control_data_cb(struct qeth_channel *channel, 812 struct qeth_cmd_buffer *iob) 813 { 814 struct qeth_card *card; 815 struct qeth_reply *reply, *r; 816 struct qeth_ipa_cmd *cmd; 817 unsigned long flags; 818 int keep_reply; 819 int rc = 0; 820 821 card = CARD_FROM_CDEV(channel->ccwdev); 822 QETH_CARD_TEXT(card, 4, "sndctlcb"); 823 rc = qeth_check_idx_response(card, iob->data); 824 switch (rc) { 825 case 0: 826 break; 827 case -EIO: 828 qeth_clear_ipacmd_list(card); 829 qeth_schedule_recovery(card); 830 /* fall through */ 831 default: 832 goto out; 833 } 834 835 cmd = qeth_check_ipa_data(card, iob); 836 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 837 goto out; 838 /*in case of OSN : check if cmd is set */ 839 if (card->info.type == QETH_CARD_TYPE_OSN && 840 cmd && 841 cmd->hdr.command != IPA_CMD_STARTLAN && 842 card->osn_info.assist_cb != NULL) { 843 card->osn_info.assist_cb(card->dev, cmd); 844 goto out; 845 } 846 847 spin_lock_irqsave(&card->lock, flags); 848 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 849 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 850 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 851 qeth_get_reply(reply); 852 list_del_init(&reply->list); 853 spin_unlock_irqrestore(&card->lock, flags); 854 keep_reply = 0; 855 if (reply->callback != NULL) { 856 if (cmd) { 857 reply->offset = (__u16)((char *)cmd - 858 (char *)iob->data); 859 keep_reply = reply->callback(card, 860 reply, 861 (unsigned long)cmd); 862 } else 863 keep_reply = reply->callback(card, 864 reply, 865 (unsigned long)iob); 866 } 867 if (cmd) 868 reply->rc = (u16) cmd->hdr.return_code; 869 else if (iob->rc) 870 reply->rc = iob->rc; 871 if (keep_reply) { 872 spin_lock_irqsave(&card->lock, flags); 873 list_add_tail(&reply->list, 874 &card->cmd_waiter_list); 875 spin_unlock_irqrestore(&card->lock, flags); 876 } else { 877 atomic_inc(&reply->received); 878 wake_up(&reply->wait_q); 879 } 880 qeth_put_reply(reply); 881 goto out; 882 } 883 } 884 spin_unlock_irqrestore(&card->lock, flags); 885 out: 886 memcpy(&card->seqno.pdu_hdr_ack, 887 QETH_PDU_HEADER_SEQ_NO(iob->data), 888 QETH_SEQ_NO_LENGTH); 889 qeth_release_buffer(channel, iob); 890 } 891 892 static int qeth_setup_channel(struct qeth_channel *channel) 893 { 894 int cnt; 895 896 QETH_DBF_TEXT(SETUP, 2, "setupch"); 897 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 898 channel->iob[cnt].data = 899 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 900 if (channel->iob[cnt].data == NULL) 901 break; 902 channel->iob[cnt].state = BUF_STATE_FREE; 903 channel->iob[cnt].channel = channel; 904 channel->iob[cnt].callback = qeth_send_control_data_cb; 905 channel->iob[cnt].rc = 0; 906 } 907 if (cnt < QETH_CMD_BUFFER_NO) { 908 while (cnt-- > 0) 909 kfree(channel->iob[cnt].data); 910 return -ENOMEM; 911 } 912 channel->buf_no = 0; 913 channel->io_buf_no = 0; 914 atomic_set(&channel->irq_pending, 0); 915 spin_lock_init(&channel->iob_lock); 916 917 init_waitqueue_head(&channel->wait_q); 918 return 0; 919 } 920 921 static int qeth_set_thread_start_bit(struct qeth_card *card, 922 unsigned long thread) 923 { 924 unsigned long flags; 925 926 spin_lock_irqsave(&card->thread_mask_lock, flags); 927 if (!(card->thread_allowed_mask & thread) || 928 (card->thread_start_mask & thread)) { 929 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 930 return -EPERM; 931 } 932 card->thread_start_mask |= thread; 933 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 934 return 0; 935 } 936 937 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 938 { 939 unsigned long flags; 940 941 spin_lock_irqsave(&card->thread_mask_lock, flags); 942 card->thread_start_mask &= ~thread; 943 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 944 wake_up(&card->wait_q); 945 } 946 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 947 948 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 949 { 950 unsigned long flags; 951 952 spin_lock_irqsave(&card->thread_mask_lock, flags); 953 card->thread_running_mask &= ~thread; 954 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 955 wake_up(&card->wait_q); 956 } 957 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 958 959 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 960 { 961 unsigned long flags; 962 int rc = 0; 963 964 spin_lock_irqsave(&card->thread_mask_lock, flags); 965 if (card->thread_start_mask & thread) { 966 if ((card->thread_allowed_mask & thread) && 967 !(card->thread_running_mask & thread)) { 968 rc = 1; 969 card->thread_start_mask &= ~thread; 970 card->thread_running_mask |= thread; 971 } else 972 rc = -EPERM; 973 } 974 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 975 return rc; 976 } 977 978 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 979 { 980 int rc = 0; 981 982 wait_event(card->wait_q, 983 (rc = __qeth_do_run_thread(card, thread)) >= 0); 984 return rc; 985 } 986 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 987 988 void qeth_schedule_recovery(struct qeth_card *card) 989 { 990 QETH_CARD_TEXT(card, 2, "startrec"); 991 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 992 schedule_work(&card->kernel_thread_starter); 993 } 994 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 995 996 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 997 { 998 int dstat, cstat; 999 char *sense; 1000 struct qeth_card *card; 1001 1002 sense = (char *) irb->ecw; 1003 cstat = irb->scsw.cmd.cstat; 1004 dstat = irb->scsw.cmd.dstat; 1005 card = CARD_FROM_CDEV(cdev); 1006 1007 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1008 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1009 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1010 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1011 dev_warn(&cdev->dev, "The qeth device driver " 1012 "failed to recover an error on the device\n"); 1013 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1014 dev_name(&cdev->dev), dstat, cstat); 1015 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1016 16, 1, irb, 64, 1); 1017 return 1; 1018 } 1019 1020 if (dstat & DEV_STAT_UNIT_CHECK) { 1021 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1022 SENSE_RESETTING_EVENT_FLAG) { 1023 QETH_CARD_TEXT(card, 2, "REVIND"); 1024 return 1; 1025 } 1026 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1027 SENSE_COMMAND_REJECT_FLAG) { 1028 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1029 return 1; 1030 } 1031 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1032 QETH_CARD_TEXT(card, 2, "AFFE"); 1033 return 1; 1034 } 1035 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1036 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1037 return 0; 1038 } 1039 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1040 return 1; 1041 } 1042 return 0; 1043 } 1044 1045 static long __qeth_check_irb_error(struct ccw_device *cdev, 1046 unsigned long intparm, struct irb *irb) 1047 { 1048 struct qeth_card *card; 1049 1050 card = CARD_FROM_CDEV(cdev); 1051 1052 if (!card || !IS_ERR(irb)) 1053 return 0; 1054 1055 switch (PTR_ERR(irb)) { 1056 case -EIO: 1057 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1058 dev_name(&cdev->dev)); 1059 QETH_CARD_TEXT(card, 2, "ckirberr"); 1060 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1061 break; 1062 case -ETIMEDOUT: 1063 dev_warn(&cdev->dev, "A hardware operation timed out" 1064 " on the device\n"); 1065 QETH_CARD_TEXT(card, 2, "ckirberr"); 1066 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1067 if (intparm == QETH_RCD_PARM) { 1068 if (card->data.ccwdev == cdev) { 1069 card->data.state = CH_STATE_DOWN; 1070 wake_up(&card->wait_q); 1071 } 1072 } 1073 break; 1074 default: 1075 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1076 dev_name(&cdev->dev), PTR_ERR(irb)); 1077 QETH_CARD_TEXT(card, 2, "ckirberr"); 1078 QETH_CARD_TEXT(card, 2, " rc???"); 1079 } 1080 return PTR_ERR(irb); 1081 } 1082 1083 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1084 struct irb *irb) 1085 { 1086 int rc; 1087 int cstat, dstat; 1088 struct qeth_cmd_buffer *buffer; 1089 struct qeth_channel *channel; 1090 struct qeth_card *card; 1091 struct qeth_cmd_buffer *iob; 1092 __u8 index; 1093 1094 if (__qeth_check_irb_error(cdev, intparm, irb)) 1095 return; 1096 cstat = irb->scsw.cmd.cstat; 1097 dstat = irb->scsw.cmd.dstat; 1098 1099 card = CARD_FROM_CDEV(cdev); 1100 if (!card) 1101 return; 1102 1103 QETH_CARD_TEXT(card, 5, "irq"); 1104 1105 if (card->read.ccwdev == cdev) { 1106 channel = &card->read; 1107 QETH_CARD_TEXT(card, 5, "read"); 1108 } else if (card->write.ccwdev == cdev) { 1109 channel = &card->write; 1110 QETH_CARD_TEXT(card, 5, "write"); 1111 } else { 1112 channel = &card->data; 1113 QETH_CARD_TEXT(card, 5, "data"); 1114 } 1115 atomic_set(&channel->irq_pending, 0); 1116 1117 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1118 channel->state = CH_STATE_STOPPED; 1119 1120 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1121 channel->state = CH_STATE_HALTED; 1122 1123 /*let's wake up immediately on data channel*/ 1124 if ((channel == &card->data) && (intparm != 0) && 1125 (intparm != QETH_RCD_PARM)) 1126 goto out; 1127 1128 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1129 QETH_CARD_TEXT(card, 6, "clrchpar"); 1130 /* we don't have to handle this further */ 1131 intparm = 0; 1132 } 1133 if (intparm == QETH_HALT_CHANNEL_PARM) { 1134 QETH_CARD_TEXT(card, 6, "hltchpar"); 1135 /* we don't have to handle this further */ 1136 intparm = 0; 1137 } 1138 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1139 (dstat & DEV_STAT_UNIT_CHECK) || 1140 (cstat)) { 1141 if (irb->esw.esw0.erw.cons) { 1142 dev_warn(&channel->ccwdev->dev, 1143 "The qeth device driver failed to recover " 1144 "an error on the device\n"); 1145 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1146 "0x%X dstat 0x%X\n", 1147 dev_name(&channel->ccwdev->dev), cstat, dstat); 1148 print_hex_dump(KERN_WARNING, "qeth: irb ", 1149 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1150 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1151 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1152 } 1153 if (intparm == QETH_RCD_PARM) { 1154 channel->state = CH_STATE_DOWN; 1155 goto out; 1156 } 1157 rc = qeth_get_problem(cdev, irb); 1158 if (rc) { 1159 qeth_clear_ipacmd_list(card); 1160 qeth_schedule_recovery(card); 1161 goto out; 1162 } 1163 } 1164 1165 if (intparm == QETH_RCD_PARM) { 1166 channel->state = CH_STATE_RCD_DONE; 1167 goto out; 1168 } 1169 if (intparm) { 1170 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1171 buffer->state = BUF_STATE_PROCESSED; 1172 } 1173 if (channel == &card->data) 1174 return; 1175 if (channel == &card->read && 1176 channel->state == CH_STATE_UP) 1177 qeth_issue_next_read(card); 1178 1179 iob = channel->iob; 1180 index = channel->buf_no; 1181 while (iob[index].state == BUF_STATE_PROCESSED) { 1182 if (iob[index].callback != NULL) 1183 iob[index].callback(channel, iob + index); 1184 1185 index = (index + 1) % QETH_CMD_BUFFER_NO; 1186 } 1187 channel->buf_no = index; 1188 out: 1189 wake_up(&card->wait_q); 1190 return; 1191 } 1192 1193 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1194 struct qeth_qdio_out_buffer *buf, 1195 enum iucv_tx_notify notification) 1196 { 1197 struct sk_buff *skb; 1198 1199 if (skb_queue_empty(&buf->skb_list)) 1200 goto out; 1201 skb = skb_peek(&buf->skb_list); 1202 while (skb) { 1203 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1204 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1205 if (skb->protocol == ETH_P_AF_IUCV) { 1206 if (skb->sk) { 1207 struct iucv_sock *iucv = iucv_sk(skb->sk); 1208 iucv->sk_txnotify(skb, notification); 1209 } 1210 } 1211 if (skb_queue_is_last(&buf->skb_list, skb)) 1212 skb = NULL; 1213 else 1214 skb = skb_queue_next(&buf->skb_list, skb); 1215 } 1216 out: 1217 return; 1218 } 1219 1220 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1221 { 1222 struct sk_buff *skb; 1223 struct iucv_sock *iucv; 1224 int notify_general_error = 0; 1225 1226 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1227 notify_general_error = 1; 1228 1229 /* release may never happen from within CQ tasklet scope */ 1230 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1231 1232 skb = skb_dequeue(&buf->skb_list); 1233 while (skb) { 1234 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1235 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1236 if (notify_general_error && 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.add_hhlen = DEFAULT_ADD_HHLEN; 1400 card->options.performance_stats = 0; 1401 card->options.rx_sg_cb = QETH_RX_SG_CB; 1402 card->options.isolation = ISOLATION_MODE_NONE; 1403 card->options.cq = QETH_CQ_DISABLED; 1404 } 1405 1406 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1407 { 1408 unsigned long flags; 1409 int rc = 0; 1410 1411 spin_lock_irqsave(&card->thread_mask_lock, flags); 1412 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1413 (u8) card->thread_start_mask, 1414 (u8) card->thread_allowed_mask, 1415 (u8) card->thread_running_mask); 1416 rc = (card->thread_start_mask & thread); 1417 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1418 return rc; 1419 } 1420 1421 static void qeth_start_kernel_thread(struct work_struct *work) 1422 { 1423 struct task_struct *ts; 1424 struct qeth_card *card = container_of(work, struct qeth_card, 1425 kernel_thread_starter); 1426 QETH_CARD_TEXT(card , 2, "strthrd"); 1427 1428 if (card->read.state != CH_STATE_UP && 1429 card->write.state != CH_STATE_UP) 1430 return; 1431 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1432 ts = kthread_run(card->discipline->recover, (void *)card, 1433 "qeth_recover"); 1434 if (IS_ERR(ts)) { 1435 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1436 qeth_clear_thread_running_bit(card, 1437 QETH_RECOVER_THREAD); 1438 } 1439 } 1440 } 1441 1442 static void qeth_buffer_reclaim_work(struct work_struct *); 1443 static int qeth_setup_card(struct qeth_card *card) 1444 { 1445 1446 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1447 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1448 1449 card->read.state = CH_STATE_DOWN; 1450 card->write.state = CH_STATE_DOWN; 1451 card->data.state = CH_STATE_DOWN; 1452 card->state = CARD_STATE_DOWN; 1453 card->lan_online = 0; 1454 card->read_or_write_problem = 0; 1455 card->dev = NULL; 1456 spin_lock_init(&card->vlanlock); 1457 spin_lock_init(&card->mclock); 1458 spin_lock_init(&card->lock); 1459 spin_lock_init(&card->ip_lock); 1460 spin_lock_init(&card->thread_mask_lock); 1461 mutex_init(&card->conf_mutex); 1462 mutex_init(&card->discipline_mutex); 1463 card->thread_start_mask = 0; 1464 card->thread_allowed_mask = 0; 1465 card->thread_running_mask = 0; 1466 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1467 INIT_LIST_HEAD(&card->cmd_waiter_list); 1468 init_waitqueue_head(&card->wait_q); 1469 /* initial options */ 1470 qeth_set_intial_options(card); 1471 /* IP address takeover */ 1472 INIT_LIST_HEAD(&card->ipato.entries); 1473 card->ipato.enabled = 0; 1474 card->ipato.invert4 = 0; 1475 card->ipato.invert6 = 0; 1476 /* init QDIO stuff */ 1477 qeth_init_qdio_info(card); 1478 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1479 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1480 return 0; 1481 } 1482 1483 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1484 { 1485 struct qeth_card *card = container_of(slr, struct qeth_card, 1486 qeth_service_level); 1487 if (card->info.mcl_level[0]) 1488 seq_printf(m, "qeth: %s firmware level %s\n", 1489 CARD_BUS_ID(card), card->info.mcl_level); 1490 } 1491 1492 static struct qeth_card *qeth_alloc_card(void) 1493 { 1494 struct qeth_card *card; 1495 1496 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1497 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1498 if (!card) 1499 goto out; 1500 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1501 if (qeth_setup_channel(&card->read)) 1502 goto out_ip; 1503 if (qeth_setup_channel(&card->write)) 1504 goto out_channel; 1505 card->options.layer2 = -1; 1506 card->qeth_service_level.seq_print = qeth_core_sl_print; 1507 register_service_level(&card->qeth_service_level); 1508 return card; 1509 1510 out_channel: 1511 qeth_clean_channel(&card->read); 1512 out_ip: 1513 kfree(card); 1514 out: 1515 return NULL; 1516 } 1517 1518 static int qeth_determine_card_type(struct qeth_card *card) 1519 { 1520 int i = 0; 1521 1522 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1523 1524 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1525 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1526 while (known_devices[i][QETH_DEV_MODEL_IND]) { 1527 if ((CARD_RDEV(card)->id.dev_type == 1528 known_devices[i][QETH_DEV_TYPE_IND]) && 1529 (CARD_RDEV(card)->id.dev_model == 1530 known_devices[i][QETH_DEV_MODEL_IND])) { 1531 card->info.type = known_devices[i][QETH_DEV_MODEL_IND]; 1532 card->qdio.no_out_queues = 1533 known_devices[i][QETH_QUEUE_NO_IND]; 1534 card->qdio.no_in_queues = 1; 1535 card->info.is_multicast_different = 1536 known_devices[i][QETH_MULTICAST_IND]; 1537 qeth_update_from_chp_desc(card); 1538 return 0; 1539 } 1540 i++; 1541 } 1542 card->info.type = QETH_CARD_TYPE_UNKNOWN; 1543 dev_err(&card->gdev->dev, "The adapter hardware is of an " 1544 "unknown type\n"); 1545 return -ENOENT; 1546 } 1547 1548 static int qeth_clear_channel(struct qeth_channel *channel) 1549 { 1550 unsigned long flags; 1551 struct qeth_card *card; 1552 int rc; 1553 1554 card = CARD_FROM_CDEV(channel->ccwdev); 1555 QETH_CARD_TEXT(card, 3, "clearch"); 1556 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1557 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1558 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1559 1560 if (rc) 1561 return rc; 1562 rc = wait_event_interruptible_timeout(card->wait_q, 1563 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1564 if (rc == -ERESTARTSYS) 1565 return rc; 1566 if (channel->state != CH_STATE_STOPPED) 1567 return -ETIME; 1568 channel->state = CH_STATE_DOWN; 1569 return 0; 1570 } 1571 1572 static int qeth_halt_channel(struct qeth_channel *channel) 1573 { 1574 unsigned long flags; 1575 struct qeth_card *card; 1576 int rc; 1577 1578 card = CARD_FROM_CDEV(channel->ccwdev); 1579 QETH_CARD_TEXT(card, 3, "haltch"); 1580 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1581 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1582 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1583 1584 if (rc) 1585 return rc; 1586 rc = wait_event_interruptible_timeout(card->wait_q, 1587 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1588 if (rc == -ERESTARTSYS) 1589 return rc; 1590 if (channel->state != CH_STATE_HALTED) 1591 return -ETIME; 1592 return 0; 1593 } 1594 1595 static int qeth_halt_channels(struct qeth_card *card) 1596 { 1597 int rc1 = 0, rc2 = 0, rc3 = 0; 1598 1599 QETH_CARD_TEXT(card, 3, "haltchs"); 1600 rc1 = qeth_halt_channel(&card->read); 1601 rc2 = qeth_halt_channel(&card->write); 1602 rc3 = qeth_halt_channel(&card->data); 1603 if (rc1) 1604 return rc1; 1605 if (rc2) 1606 return rc2; 1607 return rc3; 1608 } 1609 1610 static int qeth_clear_channels(struct qeth_card *card) 1611 { 1612 int rc1 = 0, rc2 = 0, rc3 = 0; 1613 1614 QETH_CARD_TEXT(card, 3, "clearchs"); 1615 rc1 = qeth_clear_channel(&card->read); 1616 rc2 = qeth_clear_channel(&card->write); 1617 rc3 = qeth_clear_channel(&card->data); 1618 if (rc1) 1619 return rc1; 1620 if (rc2) 1621 return rc2; 1622 return rc3; 1623 } 1624 1625 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1626 { 1627 int rc = 0; 1628 1629 QETH_CARD_TEXT(card, 3, "clhacrd"); 1630 1631 if (halt) 1632 rc = qeth_halt_channels(card); 1633 if (rc) 1634 return rc; 1635 return qeth_clear_channels(card); 1636 } 1637 1638 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1639 { 1640 int rc = 0; 1641 1642 QETH_CARD_TEXT(card, 3, "qdioclr"); 1643 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1644 QETH_QDIO_CLEANING)) { 1645 case QETH_QDIO_ESTABLISHED: 1646 if (card->info.type == QETH_CARD_TYPE_IQD) 1647 rc = qdio_shutdown(CARD_DDEV(card), 1648 QDIO_FLAG_CLEANUP_USING_HALT); 1649 else 1650 rc = qdio_shutdown(CARD_DDEV(card), 1651 QDIO_FLAG_CLEANUP_USING_CLEAR); 1652 if (rc) 1653 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1654 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1655 break; 1656 case QETH_QDIO_CLEANING: 1657 return rc; 1658 default: 1659 break; 1660 } 1661 rc = qeth_clear_halt_card(card, use_halt); 1662 if (rc) 1663 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1664 card->state = CARD_STATE_DOWN; 1665 return rc; 1666 } 1667 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1668 1669 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1670 int *length) 1671 { 1672 struct ciw *ciw; 1673 char *rcd_buf; 1674 int ret; 1675 struct qeth_channel *channel = &card->data; 1676 unsigned long flags; 1677 1678 /* 1679 * scan for RCD command in extended SenseID data 1680 */ 1681 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1682 if (!ciw || ciw->cmd == 0) 1683 return -EOPNOTSUPP; 1684 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1685 if (!rcd_buf) 1686 return -ENOMEM; 1687 1688 channel->ccw.cmd_code = ciw->cmd; 1689 channel->ccw.cda = (__u32) __pa(rcd_buf); 1690 channel->ccw.count = ciw->count; 1691 channel->ccw.flags = CCW_FLAG_SLI; 1692 channel->state = CH_STATE_RCD; 1693 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1694 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1695 QETH_RCD_PARM, LPM_ANYPATH, 0, 1696 QETH_RCD_TIMEOUT); 1697 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1698 if (!ret) 1699 wait_event(card->wait_q, 1700 (channel->state == CH_STATE_RCD_DONE || 1701 channel->state == CH_STATE_DOWN)); 1702 if (channel->state == CH_STATE_DOWN) 1703 ret = -EIO; 1704 else 1705 channel->state = CH_STATE_DOWN; 1706 if (ret) { 1707 kfree(rcd_buf); 1708 *buffer = NULL; 1709 *length = 0; 1710 } else { 1711 *length = ciw->count; 1712 *buffer = rcd_buf; 1713 } 1714 return ret; 1715 } 1716 1717 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1718 { 1719 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1720 card->info.chpid = prcd[30]; 1721 card->info.unit_addr2 = prcd[31]; 1722 card->info.cula = prcd[63]; 1723 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1724 (prcd[0x11] == _ascebc['M'])); 1725 } 1726 1727 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1728 { 1729 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1730 1731 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1732 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1733 card->info.blkt.time_total = 0; 1734 card->info.blkt.inter_packet = 0; 1735 card->info.blkt.inter_packet_jumbo = 0; 1736 } else { 1737 card->info.blkt.time_total = 250; 1738 card->info.blkt.inter_packet = 5; 1739 card->info.blkt.inter_packet_jumbo = 15; 1740 } 1741 } 1742 1743 static void qeth_init_tokens(struct qeth_card *card) 1744 { 1745 card->token.issuer_rm_w = 0x00010103UL; 1746 card->token.cm_filter_w = 0x00010108UL; 1747 card->token.cm_connection_w = 0x0001010aUL; 1748 card->token.ulp_filter_w = 0x0001010bUL; 1749 card->token.ulp_connection_w = 0x0001010dUL; 1750 } 1751 1752 static void qeth_init_func_level(struct qeth_card *card) 1753 { 1754 switch (card->info.type) { 1755 case QETH_CARD_TYPE_IQD: 1756 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1757 break; 1758 case QETH_CARD_TYPE_OSD: 1759 case QETH_CARD_TYPE_OSN: 1760 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1761 break; 1762 default: 1763 break; 1764 } 1765 } 1766 1767 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1768 void (*idx_reply_cb)(struct qeth_channel *, 1769 struct qeth_cmd_buffer *)) 1770 { 1771 struct qeth_cmd_buffer *iob; 1772 unsigned long flags; 1773 int rc; 1774 struct qeth_card *card; 1775 1776 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1777 card = CARD_FROM_CDEV(channel->ccwdev); 1778 iob = qeth_get_buffer(channel); 1779 if (!iob) 1780 return -ENOMEM; 1781 iob->callback = idx_reply_cb; 1782 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1783 channel->ccw.count = QETH_BUFSIZE; 1784 channel->ccw.cda = (__u32) __pa(iob->data); 1785 1786 wait_event(card->wait_q, 1787 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1788 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1789 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1790 rc = ccw_device_start(channel->ccwdev, 1791 &channel->ccw, (addr_t) iob, 0, 0); 1792 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1793 1794 if (rc) { 1795 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1796 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1797 atomic_set(&channel->irq_pending, 0); 1798 wake_up(&card->wait_q); 1799 return rc; 1800 } 1801 rc = wait_event_interruptible_timeout(card->wait_q, 1802 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1803 if (rc == -ERESTARTSYS) 1804 return rc; 1805 if (channel->state != CH_STATE_UP) { 1806 rc = -ETIME; 1807 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1808 qeth_clear_cmd_buffers(channel); 1809 } else 1810 rc = 0; 1811 return rc; 1812 } 1813 1814 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1815 void (*idx_reply_cb)(struct qeth_channel *, 1816 struct qeth_cmd_buffer *)) 1817 { 1818 struct qeth_card *card; 1819 struct qeth_cmd_buffer *iob; 1820 unsigned long flags; 1821 __u16 temp; 1822 __u8 tmp; 1823 int rc; 1824 struct ccw_dev_id temp_devid; 1825 1826 card = CARD_FROM_CDEV(channel->ccwdev); 1827 1828 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1829 1830 iob = qeth_get_buffer(channel); 1831 if (!iob) 1832 return -ENOMEM; 1833 iob->callback = idx_reply_cb; 1834 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1835 channel->ccw.count = IDX_ACTIVATE_SIZE; 1836 channel->ccw.cda = (__u32) __pa(iob->data); 1837 if (channel == &card->write) { 1838 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1839 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1840 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1841 card->seqno.trans_hdr++; 1842 } else { 1843 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1844 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1845 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1846 } 1847 tmp = ((__u8)card->info.portno) | 0x80; 1848 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1849 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1850 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1851 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1852 &card->info.func_level, sizeof(__u16)); 1853 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1854 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1855 temp = (card->info.cula << 8) + card->info.unit_addr2; 1856 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1857 1858 wait_event(card->wait_q, 1859 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1860 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1861 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1862 rc = ccw_device_start(channel->ccwdev, 1863 &channel->ccw, (addr_t) iob, 0, 0); 1864 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1865 1866 if (rc) { 1867 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1868 rc); 1869 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1870 atomic_set(&channel->irq_pending, 0); 1871 wake_up(&card->wait_q); 1872 return rc; 1873 } 1874 rc = wait_event_interruptible_timeout(card->wait_q, 1875 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1876 if (rc == -ERESTARTSYS) 1877 return rc; 1878 if (channel->state != CH_STATE_ACTIVATING) { 1879 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1880 " failed to recover an error on the device\n"); 1881 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1882 dev_name(&channel->ccwdev->dev)); 1883 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1884 qeth_clear_cmd_buffers(channel); 1885 return -ETIME; 1886 } 1887 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1888 } 1889 1890 static int qeth_peer_func_level(int level) 1891 { 1892 if ((level & 0xff) == 8) 1893 return (level & 0xff) + 0x400; 1894 if (((level >> 8) & 3) == 1) 1895 return (level & 0xff) + 0x200; 1896 return level; 1897 } 1898 1899 static void qeth_idx_write_cb(struct qeth_channel *channel, 1900 struct qeth_cmd_buffer *iob) 1901 { 1902 struct qeth_card *card; 1903 __u16 temp; 1904 1905 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1906 1907 if (channel->state == CH_STATE_DOWN) { 1908 channel->state = CH_STATE_ACTIVATING; 1909 goto out; 1910 } 1911 card = CARD_FROM_CDEV(channel->ccwdev); 1912 1913 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1914 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1915 dev_err(&card->write.ccwdev->dev, 1916 "The adapter is used exclusively by another " 1917 "host\n"); 1918 else 1919 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1920 " negative reply\n", 1921 dev_name(&card->write.ccwdev->dev)); 1922 goto out; 1923 } 1924 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1925 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1926 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1927 "function level mismatch (sent: 0x%x, received: " 1928 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 1929 card->info.func_level, temp); 1930 goto out; 1931 } 1932 channel->state = CH_STATE_UP; 1933 out: 1934 qeth_release_buffer(channel, iob); 1935 } 1936 1937 static void qeth_idx_read_cb(struct qeth_channel *channel, 1938 struct qeth_cmd_buffer *iob) 1939 { 1940 struct qeth_card *card; 1941 __u16 temp; 1942 1943 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1944 if (channel->state == CH_STATE_DOWN) { 1945 channel->state = CH_STATE_ACTIVATING; 1946 goto out; 1947 } 1948 1949 card = CARD_FROM_CDEV(channel->ccwdev); 1950 if (qeth_check_idx_response(card, iob->data)) 1951 goto out; 1952 1953 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1954 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1955 case QETH_IDX_ACT_ERR_EXCL: 1956 dev_err(&card->write.ccwdev->dev, 1957 "The adapter is used exclusively by another " 1958 "host\n"); 1959 break; 1960 case QETH_IDX_ACT_ERR_AUTH: 1961 case QETH_IDX_ACT_ERR_AUTH_USER: 1962 dev_err(&card->read.ccwdev->dev, 1963 "Setting the device online failed because of " 1964 "insufficient authorization\n"); 1965 break; 1966 default: 1967 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1968 " negative reply\n", 1969 dev_name(&card->read.ccwdev->dev)); 1970 } 1971 QETH_CARD_TEXT_(card, 2, "idxread%c", 1972 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1973 goto out; 1974 } 1975 1976 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1977 if (temp != qeth_peer_func_level(card->info.func_level)) { 1978 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 1979 "level mismatch (sent: 0x%x, received: 0x%x)\n", 1980 dev_name(&card->read.ccwdev->dev), 1981 card->info.func_level, temp); 1982 goto out; 1983 } 1984 memcpy(&card->token.issuer_rm_r, 1985 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1986 QETH_MPC_TOKEN_LENGTH); 1987 memcpy(&card->info.mcl_level[0], 1988 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1989 channel->state = CH_STATE_UP; 1990 out: 1991 qeth_release_buffer(channel, iob); 1992 } 1993 1994 void qeth_prepare_control_data(struct qeth_card *card, int len, 1995 struct qeth_cmd_buffer *iob) 1996 { 1997 qeth_setup_ccw(&card->write, iob->data, len); 1998 iob->callback = qeth_release_buffer; 1999 2000 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2001 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2002 card->seqno.trans_hdr++; 2003 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2004 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2005 card->seqno.pdu_hdr++; 2006 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2007 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2008 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2009 } 2010 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2011 2012 /** 2013 * qeth_send_control_data() - send control command to the card 2014 * @card: qeth_card structure pointer 2015 * @len: size of the command buffer 2016 * @iob: qeth_cmd_buffer pointer 2017 * @reply_cb: callback function pointer 2018 * @cb_card: pointer to the qeth_card structure 2019 * @cb_reply: pointer to the qeth_reply structure 2020 * @cb_cmd: pointer to the original iob for non-IPA 2021 * commands, or to the qeth_ipa_cmd structure 2022 * for the IPA commands. 2023 * @reply_param: private pointer passed to the callback 2024 * 2025 * Returns the value of the `return_code' field of the response 2026 * block returned from the hardware, or other error indication. 2027 * Value of zero indicates successful execution of the command. 2028 * 2029 * Callback function gets called one or more times, with cb_cmd 2030 * pointing to the response returned by the hardware. Callback 2031 * function must return non-zero if more reply blocks are expected, 2032 * and zero if the last or only reply block is received. Callback 2033 * function can get the value of the reply_param pointer from the 2034 * field 'param' of the structure qeth_reply. 2035 */ 2036 2037 int qeth_send_control_data(struct qeth_card *card, int len, 2038 struct qeth_cmd_buffer *iob, 2039 int (*reply_cb)(struct qeth_card *cb_card, 2040 struct qeth_reply *cb_reply, 2041 unsigned long cb_cmd), 2042 void *reply_param) 2043 { 2044 int rc; 2045 unsigned long flags; 2046 struct qeth_reply *reply = NULL; 2047 unsigned long timeout, event_timeout; 2048 struct qeth_ipa_cmd *cmd; 2049 2050 QETH_CARD_TEXT(card, 2, "sendctl"); 2051 2052 if (card->read_or_write_problem) { 2053 qeth_release_buffer(iob->channel, iob); 2054 return -EIO; 2055 } 2056 reply = qeth_alloc_reply(card); 2057 if (!reply) { 2058 return -ENOMEM; 2059 } 2060 reply->callback = reply_cb; 2061 reply->param = reply_param; 2062 if (card->state == CARD_STATE_DOWN) 2063 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2064 else 2065 reply->seqno = card->seqno.ipa++; 2066 init_waitqueue_head(&reply->wait_q); 2067 spin_lock_irqsave(&card->lock, flags); 2068 list_add_tail(&reply->list, &card->cmd_waiter_list); 2069 spin_unlock_irqrestore(&card->lock, flags); 2070 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2071 2072 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2073 qeth_prepare_control_data(card, len, iob); 2074 2075 if (IS_IPA(iob->data)) 2076 event_timeout = QETH_IPA_TIMEOUT; 2077 else 2078 event_timeout = QETH_TIMEOUT; 2079 timeout = jiffies + event_timeout; 2080 2081 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2082 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2083 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2084 (addr_t) iob, 0, 0); 2085 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2086 if (rc) { 2087 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2088 "ccw_device_start rc = %i\n", 2089 dev_name(&card->write.ccwdev->dev), rc); 2090 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2091 spin_lock_irqsave(&card->lock, flags); 2092 list_del_init(&reply->list); 2093 qeth_put_reply(reply); 2094 spin_unlock_irqrestore(&card->lock, flags); 2095 qeth_release_buffer(iob->channel, iob); 2096 atomic_set(&card->write.irq_pending, 0); 2097 wake_up(&card->wait_q); 2098 return rc; 2099 } 2100 2101 /* we have only one long running ipassist, since we can ensure 2102 process context of this command we can sleep */ 2103 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2104 if ((cmd->hdr.command == IPA_CMD_SETIP) && 2105 (cmd->hdr.prot_version == QETH_PROT_IPV4)) { 2106 if (!wait_event_timeout(reply->wait_q, 2107 atomic_read(&reply->received), event_timeout)) 2108 goto time_err; 2109 } else { 2110 while (!atomic_read(&reply->received)) { 2111 if (time_after(jiffies, timeout)) 2112 goto time_err; 2113 cpu_relax(); 2114 } 2115 } 2116 2117 if (reply->rc == -EIO) 2118 goto error; 2119 rc = reply->rc; 2120 qeth_put_reply(reply); 2121 return rc; 2122 2123 time_err: 2124 reply->rc = -ETIME; 2125 spin_lock_irqsave(&reply->card->lock, flags); 2126 list_del_init(&reply->list); 2127 spin_unlock_irqrestore(&reply->card->lock, flags); 2128 atomic_inc(&reply->received); 2129 error: 2130 atomic_set(&card->write.irq_pending, 0); 2131 qeth_release_buffer(iob->channel, iob); 2132 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2133 rc = reply->rc; 2134 qeth_put_reply(reply); 2135 return rc; 2136 } 2137 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2138 2139 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2140 unsigned long data) 2141 { 2142 struct qeth_cmd_buffer *iob; 2143 2144 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2145 2146 iob = (struct qeth_cmd_buffer *) data; 2147 memcpy(&card->token.cm_filter_r, 2148 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2149 QETH_MPC_TOKEN_LENGTH); 2150 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2151 return 0; 2152 } 2153 2154 static int qeth_cm_enable(struct qeth_card *card) 2155 { 2156 int rc; 2157 struct qeth_cmd_buffer *iob; 2158 2159 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2160 2161 iob = qeth_wait_for_buffer(&card->write); 2162 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2163 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2164 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2165 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2166 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2167 2168 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2169 qeth_cm_enable_cb, NULL); 2170 return rc; 2171 } 2172 2173 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2174 unsigned long data) 2175 { 2176 2177 struct qeth_cmd_buffer *iob; 2178 2179 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2180 2181 iob = (struct qeth_cmd_buffer *) data; 2182 memcpy(&card->token.cm_connection_r, 2183 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2184 QETH_MPC_TOKEN_LENGTH); 2185 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2186 return 0; 2187 } 2188 2189 static int qeth_cm_setup(struct qeth_card *card) 2190 { 2191 int rc; 2192 struct qeth_cmd_buffer *iob; 2193 2194 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2195 2196 iob = qeth_wait_for_buffer(&card->write); 2197 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2198 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2199 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2200 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2201 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2202 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2203 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2204 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2205 qeth_cm_setup_cb, NULL); 2206 return rc; 2207 2208 } 2209 2210 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2211 { 2212 switch (card->info.type) { 2213 case QETH_CARD_TYPE_UNKNOWN: 2214 return 1500; 2215 case QETH_CARD_TYPE_IQD: 2216 return card->info.max_mtu; 2217 case QETH_CARD_TYPE_OSD: 2218 switch (card->info.link_type) { 2219 case QETH_LINK_TYPE_HSTR: 2220 case QETH_LINK_TYPE_LANE_TR: 2221 return 2000; 2222 default: 2223 return card->options.layer2 ? 1500 : 1492; 2224 } 2225 case QETH_CARD_TYPE_OSM: 2226 case QETH_CARD_TYPE_OSX: 2227 return card->options.layer2 ? 1500 : 1492; 2228 default: 2229 return 1500; 2230 } 2231 } 2232 2233 static inline int qeth_get_mtu_outof_framesize(int framesize) 2234 { 2235 switch (framesize) { 2236 case 0x4000: 2237 return 8192; 2238 case 0x6000: 2239 return 16384; 2240 case 0xa000: 2241 return 32768; 2242 case 0xffff: 2243 return 57344; 2244 default: 2245 return 0; 2246 } 2247 } 2248 2249 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2250 { 2251 switch (card->info.type) { 2252 case QETH_CARD_TYPE_OSD: 2253 case QETH_CARD_TYPE_OSM: 2254 case QETH_CARD_TYPE_OSX: 2255 case QETH_CARD_TYPE_IQD: 2256 return ((mtu >= 576) && 2257 (mtu <= card->info.max_mtu)); 2258 case QETH_CARD_TYPE_OSN: 2259 case QETH_CARD_TYPE_UNKNOWN: 2260 default: 2261 return 1; 2262 } 2263 } 2264 2265 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2266 unsigned long data) 2267 { 2268 2269 __u16 mtu, framesize; 2270 __u16 len; 2271 __u8 link_type; 2272 struct qeth_cmd_buffer *iob; 2273 2274 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2275 2276 iob = (struct qeth_cmd_buffer *) data; 2277 memcpy(&card->token.ulp_filter_r, 2278 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2279 QETH_MPC_TOKEN_LENGTH); 2280 if (card->info.type == QETH_CARD_TYPE_IQD) { 2281 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2282 mtu = qeth_get_mtu_outof_framesize(framesize); 2283 if (!mtu) { 2284 iob->rc = -EINVAL; 2285 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2286 return 0; 2287 } 2288 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2289 /* frame size has changed */ 2290 if (card->dev && 2291 ((card->dev->mtu == card->info.initial_mtu) || 2292 (card->dev->mtu > mtu))) 2293 card->dev->mtu = mtu; 2294 qeth_free_qdio_buffers(card); 2295 } 2296 card->info.initial_mtu = mtu; 2297 card->info.max_mtu = mtu; 2298 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2299 } else { 2300 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2301 iob->data); 2302 card->info.initial_mtu = min(card->info.max_mtu, 2303 qeth_get_initial_mtu_for_card(card)); 2304 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2305 } 2306 2307 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2308 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2309 memcpy(&link_type, 2310 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2311 card->info.link_type = link_type; 2312 } else 2313 card->info.link_type = 0; 2314 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2315 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2316 return 0; 2317 } 2318 2319 static int qeth_ulp_enable(struct qeth_card *card) 2320 { 2321 int rc; 2322 char prot_type; 2323 struct qeth_cmd_buffer *iob; 2324 2325 /*FIXME: trace view callbacks*/ 2326 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2327 2328 iob = qeth_wait_for_buffer(&card->write); 2329 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2330 2331 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2332 (__u8) card->info.portno; 2333 if (card->options.layer2) 2334 if (card->info.type == QETH_CARD_TYPE_OSN) 2335 prot_type = QETH_PROT_OSN2; 2336 else 2337 prot_type = QETH_PROT_LAYER2; 2338 else 2339 prot_type = QETH_PROT_TCPIP; 2340 2341 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2342 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2343 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2344 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2345 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2346 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2347 qeth_ulp_enable_cb, NULL); 2348 return rc; 2349 2350 } 2351 2352 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2353 unsigned long data) 2354 { 2355 struct qeth_cmd_buffer *iob; 2356 2357 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2358 2359 iob = (struct qeth_cmd_buffer *) data; 2360 memcpy(&card->token.ulp_connection_r, 2361 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2362 QETH_MPC_TOKEN_LENGTH); 2363 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2364 3)) { 2365 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2366 dev_err(&card->gdev->dev, "A connection could not be " 2367 "established because of an OLM limit\n"); 2368 iob->rc = -EMLINK; 2369 } 2370 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2371 return 0; 2372 } 2373 2374 static int qeth_ulp_setup(struct qeth_card *card) 2375 { 2376 int rc; 2377 __u16 temp; 2378 struct qeth_cmd_buffer *iob; 2379 struct ccw_dev_id dev_id; 2380 2381 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2382 2383 iob = qeth_wait_for_buffer(&card->write); 2384 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2385 2386 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2387 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2388 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2389 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2390 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2391 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2392 2393 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2394 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2395 temp = (card->info.cula << 8) + card->info.unit_addr2; 2396 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2397 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2398 qeth_ulp_setup_cb, NULL); 2399 return rc; 2400 } 2401 2402 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2403 { 2404 int rc; 2405 struct qeth_qdio_out_buffer *newbuf; 2406 2407 rc = 0; 2408 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2409 if (!newbuf) { 2410 rc = -ENOMEM; 2411 goto out; 2412 } 2413 newbuf->buffer = q->qdio_bufs[bidx]; 2414 skb_queue_head_init(&newbuf->skb_list); 2415 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2416 newbuf->q = q; 2417 newbuf->aob = NULL; 2418 newbuf->next_pending = q->bufs[bidx]; 2419 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2420 q->bufs[bidx] = newbuf; 2421 if (q->bufstates) { 2422 q->bufstates[bidx].user = newbuf; 2423 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2424 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2425 QETH_CARD_TEXT_(q->card, 2, "%lx", 2426 (long) newbuf->next_pending); 2427 } 2428 out: 2429 return rc; 2430 } 2431 2432 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2433 { 2434 if (!q) 2435 return; 2436 2437 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2438 kfree(q); 2439 } 2440 2441 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2442 { 2443 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2444 2445 if (!q) 2446 return NULL; 2447 2448 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2449 kfree(q); 2450 return NULL; 2451 } 2452 return q; 2453 } 2454 2455 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2456 { 2457 int i, j; 2458 2459 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2460 2461 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2462 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2463 return 0; 2464 2465 QETH_DBF_TEXT(SETUP, 2, "inq"); 2466 card->qdio.in_q = qeth_alloc_qdio_queue(); 2467 if (!card->qdio.in_q) 2468 goto out_nomem; 2469 2470 /* inbound buffer pool */ 2471 if (qeth_alloc_buffer_pool(card)) 2472 goto out_freeinq; 2473 2474 /* outbound */ 2475 card->qdio.out_qs = 2476 kzalloc(card->qdio.no_out_queues * 2477 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2478 if (!card->qdio.out_qs) 2479 goto out_freepool; 2480 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2481 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2482 if (!card->qdio.out_qs[i]) 2483 goto out_freeoutq; 2484 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2485 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2486 card->qdio.out_qs[i]->queue_no = i; 2487 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2488 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2489 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2490 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2491 goto out_freeoutqbufs; 2492 } 2493 } 2494 2495 /* completion */ 2496 if (qeth_alloc_cq(card)) 2497 goto out_freeoutq; 2498 2499 return 0; 2500 2501 out_freeoutqbufs: 2502 while (j > 0) { 2503 --j; 2504 kmem_cache_free(qeth_qdio_outbuf_cache, 2505 card->qdio.out_qs[i]->bufs[j]); 2506 card->qdio.out_qs[i]->bufs[j] = NULL; 2507 } 2508 out_freeoutq: 2509 while (i > 0) { 2510 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2511 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2512 } 2513 kfree(card->qdio.out_qs); 2514 card->qdio.out_qs = NULL; 2515 out_freepool: 2516 qeth_free_buffer_pool(card); 2517 out_freeinq: 2518 qeth_free_qdio_queue(card->qdio.in_q); 2519 card->qdio.in_q = NULL; 2520 out_nomem: 2521 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2522 return -ENOMEM; 2523 } 2524 2525 static void qeth_free_qdio_buffers(struct qeth_card *card) 2526 { 2527 int i, j; 2528 2529 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2530 QETH_QDIO_UNINITIALIZED) 2531 return; 2532 2533 qeth_free_cq(card); 2534 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2535 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2536 if (card->qdio.in_q->bufs[j].rx_skb) 2537 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2538 } 2539 qeth_free_qdio_queue(card->qdio.in_q); 2540 card->qdio.in_q = NULL; 2541 /* inbound buffer pool */ 2542 qeth_free_buffer_pool(card); 2543 /* free outbound qdio_qs */ 2544 if (card->qdio.out_qs) { 2545 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2546 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2547 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2548 } 2549 kfree(card->qdio.out_qs); 2550 card->qdio.out_qs = NULL; 2551 } 2552 } 2553 2554 static void qeth_create_qib_param_field(struct qeth_card *card, 2555 char *param_field) 2556 { 2557 2558 param_field[0] = _ascebc['P']; 2559 param_field[1] = _ascebc['C']; 2560 param_field[2] = _ascebc['I']; 2561 param_field[3] = _ascebc['T']; 2562 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2563 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2564 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2565 } 2566 2567 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2568 char *param_field) 2569 { 2570 param_field[16] = _ascebc['B']; 2571 param_field[17] = _ascebc['L']; 2572 param_field[18] = _ascebc['K']; 2573 param_field[19] = _ascebc['T']; 2574 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2575 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2576 *((unsigned int *) (¶m_field[28])) = 2577 card->info.blkt.inter_packet_jumbo; 2578 } 2579 2580 static int qeth_qdio_activate(struct qeth_card *card) 2581 { 2582 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2583 return qdio_activate(CARD_DDEV(card)); 2584 } 2585 2586 static int qeth_dm_act(struct qeth_card *card) 2587 { 2588 int rc; 2589 struct qeth_cmd_buffer *iob; 2590 2591 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2592 2593 iob = qeth_wait_for_buffer(&card->write); 2594 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2595 2596 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2597 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2598 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2599 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2600 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2601 return rc; 2602 } 2603 2604 static int qeth_mpc_initialize(struct qeth_card *card) 2605 { 2606 int rc; 2607 2608 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2609 2610 rc = qeth_issue_next_read(card); 2611 if (rc) { 2612 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2613 return rc; 2614 } 2615 rc = qeth_cm_enable(card); 2616 if (rc) { 2617 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2618 goto out_qdio; 2619 } 2620 rc = qeth_cm_setup(card); 2621 if (rc) { 2622 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2623 goto out_qdio; 2624 } 2625 rc = qeth_ulp_enable(card); 2626 if (rc) { 2627 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2628 goto out_qdio; 2629 } 2630 rc = qeth_ulp_setup(card); 2631 if (rc) { 2632 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2633 goto out_qdio; 2634 } 2635 rc = qeth_alloc_qdio_buffers(card); 2636 if (rc) { 2637 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2638 goto out_qdio; 2639 } 2640 rc = qeth_qdio_establish(card); 2641 if (rc) { 2642 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2643 qeth_free_qdio_buffers(card); 2644 goto out_qdio; 2645 } 2646 rc = qeth_qdio_activate(card); 2647 if (rc) { 2648 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2649 goto out_qdio; 2650 } 2651 rc = qeth_dm_act(card); 2652 if (rc) { 2653 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2654 goto out_qdio; 2655 } 2656 2657 return 0; 2658 out_qdio: 2659 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2660 qdio_free(CARD_DDEV(card)); 2661 return rc; 2662 } 2663 2664 void qeth_print_status_message(struct qeth_card *card) 2665 { 2666 switch (card->info.type) { 2667 case QETH_CARD_TYPE_OSD: 2668 case QETH_CARD_TYPE_OSM: 2669 case QETH_CARD_TYPE_OSX: 2670 /* VM will use a non-zero first character 2671 * to indicate a HiperSockets like reporting 2672 * of the level OSA sets the first character to zero 2673 * */ 2674 if (!card->info.mcl_level[0]) { 2675 sprintf(card->info.mcl_level, "%02x%02x", 2676 card->info.mcl_level[2], 2677 card->info.mcl_level[3]); 2678 break; 2679 } 2680 /* fallthrough */ 2681 case QETH_CARD_TYPE_IQD: 2682 if ((card->info.guestlan) || 2683 (card->info.mcl_level[0] & 0x80)) { 2684 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2685 card->info.mcl_level[0]]; 2686 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2687 card->info.mcl_level[1]]; 2688 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2689 card->info.mcl_level[2]]; 2690 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2691 card->info.mcl_level[3]]; 2692 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2693 } 2694 break; 2695 default: 2696 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2697 } 2698 dev_info(&card->gdev->dev, 2699 "Device is a%s card%s%s%s\nwith link type %s.\n", 2700 qeth_get_cardname(card), 2701 (card->info.mcl_level[0]) ? " (level: " : "", 2702 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2703 (card->info.mcl_level[0]) ? ")" : "", 2704 qeth_get_cardname_short(card)); 2705 } 2706 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2707 2708 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2709 { 2710 struct qeth_buffer_pool_entry *entry; 2711 2712 QETH_CARD_TEXT(card, 5, "inwrklst"); 2713 2714 list_for_each_entry(entry, 2715 &card->qdio.init_pool.entry_list, init_list) { 2716 qeth_put_buffer_pool_entry(card, entry); 2717 } 2718 } 2719 2720 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2721 struct qeth_card *card) 2722 { 2723 struct list_head *plh; 2724 struct qeth_buffer_pool_entry *entry; 2725 int i, free; 2726 struct page *page; 2727 2728 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2729 return NULL; 2730 2731 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2732 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2733 free = 1; 2734 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2735 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2736 free = 0; 2737 break; 2738 } 2739 } 2740 if (free) { 2741 list_del_init(&entry->list); 2742 return entry; 2743 } 2744 } 2745 2746 /* no free buffer in pool so take first one and swap pages */ 2747 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2748 struct qeth_buffer_pool_entry, list); 2749 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2750 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2751 page = alloc_page(GFP_ATOMIC); 2752 if (!page) { 2753 return NULL; 2754 } else { 2755 free_page((unsigned long)entry->elements[i]); 2756 entry->elements[i] = page_address(page); 2757 if (card->options.performance_stats) 2758 card->perf_stats.sg_alloc_page_rx++; 2759 } 2760 } 2761 } 2762 list_del_init(&entry->list); 2763 return entry; 2764 } 2765 2766 static int qeth_init_input_buffer(struct qeth_card *card, 2767 struct qeth_qdio_buffer *buf) 2768 { 2769 struct qeth_buffer_pool_entry *pool_entry; 2770 int i; 2771 2772 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2773 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 2774 if (!buf->rx_skb) 2775 return 1; 2776 } 2777 2778 pool_entry = qeth_find_free_buffer_pool_entry(card); 2779 if (!pool_entry) 2780 return 1; 2781 2782 /* 2783 * since the buffer is accessed only from the input_tasklet 2784 * there shouldn't be a need to synchronize; also, since we use 2785 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2786 * buffers 2787 */ 2788 2789 buf->pool_entry = pool_entry; 2790 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2791 buf->buffer->element[i].length = PAGE_SIZE; 2792 buf->buffer->element[i].addr = pool_entry->elements[i]; 2793 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2794 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2795 else 2796 buf->buffer->element[i].eflags = 0; 2797 buf->buffer->element[i].sflags = 0; 2798 } 2799 return 0; 2800 } 2801 2802 int qeth_init_qdio_queues(struct qeth_card *card) 2803 { 2804 int i, j; 2805 int rc; 2806 2807 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2808 2809 /* inbound queue */ 2810 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, 2811 QDIO_MAX_BUFFERS_PER_Q); 2812 qeth_initialize_working_pool_list(card); 2813 /*give only as many buffers to hardware as we have buffer pool entries*/ 2814 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2815 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2816 card->qdio.in_q->next_buf_to_init = 2817 card->qdio.in_buf_pool.buf_count - 1; 2818 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2819 card->qdio.in_buf_pool.buf_count - 1); 2820 if (rc) { 2821 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2822 return rc; 2823 } 2824 2825 /* completion */ 2826 rc = qeth_cq_init(card); 2827 if (rc) { 2828 return rc; 2829 } 2830 2831 /* outbound queue */ 2832 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2833 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2834 QDIO_MAX_BUFFERS_PER_Q); 2835 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2836 qeth_clear_output_buffer(card->qdio.out_qs[i], 2837 card->qdio.out_qs[i]->bufs[j], 2838 QETH_QDIO_BUF_EMPTY); 2839 } 2840 card->qdio.out_qs[i]->card = card; 2841 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2842 card->qdio.out_qs[i]->do_pack = 0; 2843 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2844 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2845 atomic_set(&card->qdio.out_qs[i]->state, 2846 QETH_OUT_Q_UNLOCKED); 2847 } 2848 return 0; 2849 } 2850 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2851 2852 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2853 { 2854 switch (link_type) { 2855 case QETH_LINK_TYPE_HSTR: 2856 return 2; 2857 default: 2858 return 1; 2859 } 2860 } 2861 2862 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2863 struct qeth_ipa_cmd *cmd, __u8 command, 2864 enum qeth_prot_versions prot) 2865 { 2866 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2867 cmd->hdr.command = command; 2868 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2869 cmd->hdr.seqno = card->seqno.ipa; 2870 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2871 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2872 if (card->options.layer2) 2873 cmd->hdr.prim_version_no = 2; 2874 else 2875 cmd->hdr.prim_version_no = 1; 2876 cmd->hdr.param_count = 1; 2877 cmd->hdr.prot_version = prot; 2878 cmd->hdr.ipa_supported = 0; 2879 cmd->hdr.ipa_enabled = 0; 2880 } 2881 2882 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2883 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2884 { 2885 struct qeth_cmd_buffer *iob; 2886 struct qeth_ipa_cmd *cmd; 2887 2888 iob = qeth_get_buffer(&card->write); 2889 if (iob) { 2890 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2891 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2892 } else { 2893 dev_warn(&card->gdev->dev, 2894 "The qeth driver ran out of channel command buffers\n"); 2895 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2896 dev_name(&card->gdev->dev)); 2897 } 2898 2899 return iob; 2900 } 2901 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2902 2903 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2904 char prot_type) 2905 { 2906 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2907 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2908 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2909 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2910 } 2911 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2912 2913 /** 2914 * qeth_send_ipa_cmd() - send an IPA command 2915 * 2916 * See qeth_send_control_data() for explanation of the arguments. 2917 */ 2918 2919 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2920 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2921 unsigned long), 2922 void *reply_param) 2923 { 2924 int rc; 2925 char prot_type; 2926 2927 QETH_CARD_TEXT(card, 4, "sendipa"); 2928 2929 if (card->options.layer2) 2930 if (card->info.type == QETH_CARD_TYPE_OSN) 2931 prot_type = QETH_PROT_OSN2; 2932 else 2933 prot_type = QETH_PROT_LAYER2; 2934 else 2935 prot_type = QETH_PROT_TCPIP; 2936 qeth_prepare_ipa_cmd(card, iob, prot_type); 2937 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2938 iob, reply_cb, reply_param); 2939 if (rc == -ETIME) { 2940 qeth_clear_ipacmd_list(card); 2941 qeth_schedule_recovery(card); 2942 } 2943 return rc; 2944 } 2945 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2946 2947 static int qeth_send_startlan(struct qeth_card *card) 2948 { 2949 int rc; 2950 struct qeth_cmd_buffer *iob; 2951 2952 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2953 2954 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2955 if (!iob) 2956 return -ENOMEM; 2957 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2958 return rc; 2959 } 2960 2961 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 2962 struct qeth_reply *reply, unsigned long data) 2963 { 2964 struct qeth_ipa_cmd *cmd; 2965 2966 QETH_CARD_TEXT(card, 4, "defadpcb"); 2967 2968 cmd = (struct qeth_ipa_cmd *) data; 2969 if (cmd->hdr.return_code == 0) 2970 cmd->hdr.return_code = 2971 cmd->data.setadapterparms.hdr.return_code; 2972 return 0; 2973 } 2974 2975 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2976 struct qeth_reply *reply, unsigned long data) 2977 { 2978 struct qeth_ipa_cmd *cmd; 2979 2980 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2981 2982 cmd = (struct qeth_ipa_cmd *) data; 2983 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2984 card->info.link_type = 2985 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2986 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2987 } 2988 card->options.adp.supported_funcs = 2989 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2990 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 2991 } 2992 2993 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2994 __u32 command, __u32 cmdlen) 2995 { 2996 struct qeth_cmd_buffer *iob; 2997 struct qeth_ipa_cmd *cmd; 2998 2999 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3000 QETH_PROT_IPV4); 3001 if (iob) { 3002 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3003 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3004 cmd->data.setadapterparms.hdr.command_code = command; 3005 cmd->data.setadapterparms.hdr.used_total = 1; 3006 cmd->data.setadapterparms.hdr.seq_no = 1; 3007 } 3008 3009 return iob; 3010 } 3011 3012 int qeth_query_setadapterparms(struct qeth_card *card) 3013 { 3014 int rc; 3015 struct qeth_cmd_buffer *iob; 3016 3017 QETH_CARD_TEXT(card, 3, "queryadp"); 3018 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3019 sizeof(struct qeth_ipacmd_setadpparms)); 3020 if (!iob) 3021 return -ENOMEM; 3022 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3023 return rc; 3024 } 3025 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3026 3027 static int qeth_query_ipassists_cb(struct qeth_card *card, 3028 struct qeth_reply *reply, unsigned long data) 3029 { 3030 struct qeth_ipa_cmd *cmd; 3031 3032 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3033 3034 cmd = (struct qeth_ipa_cmd *) data; 3035 3036 switch (cmd->hdr.return_code) { 3037 case IPA_RC_NOTSUPP: 3038 case IPA_RC_L2_UNSUPPORTED_CMD: 3039 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3040 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3041 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3042 return -0; 3043 default: 3044 if (cmd->hdr.return_code) { 3045 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3046 "rc=%d\n", 3047 dev_name(&card->gdev->dev), 3048 cmd->hdr.return_code); 3049 return 0; 3050 } 3051 } 3052 3053 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3054 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3055 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3056 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3057 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3058 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3059 } else 3060 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3061 "\n", dev_name(&card->gdev->dev)); 3062 return 0; 3063 } 3064 3065 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3066 { 3067 int rc; 3068 struct qeth_cmd_buffer *iob; 3069 3070 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3071 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3072 if (!iob) 3073 return -ENOMEM; 3074 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3075 return rc; 3076 } 3077 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3078 3079 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3080 struct qeth_reply *reply, unsigned long data) 3081 { 3082 struct qeth_ipa_cmd *cmd; 3083 struct qeth_switch_info *sw_info; 3084 struct qeth_query_switch_attributes *attrs; 3085 3086 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3087 cmd = (struct qeth_ipa_cmd *) data; 3088 sw_info = (struct qeth_switch_info *)reply->param; 3089 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3090 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3091 sw_info->capabilities = attrs->capabilities; 3092 sw_info->settings = attrs->settings; 3093 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3094 sw_info->settings); 3095 } 3096 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3097 3098 return 0; 3099 } 3100 3101 int qeth_query_switch_attributes(struct qeth_card *card, 3102 struct qeth_switch_info *sw_info) 3103 { 3104 struct qeth_cmd_buffer *iob; 3105 3106 QETH_CARD_TEXT(card, 2, "qswiattr"); 3107 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3108 return -EOPNOTSUPP; 3109 if (!netif_carrier_ok(card->dev)) 3110 return -ENOMEDIUM; 3111 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3112 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3113 if (!iob) 3114 return -ENOMEM; 3115 return qeth_send_ipa_cmd(card, iob, 3116 qeth_query_switch_attributes_cb, sw_info); 3117 } 3118 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3119 3120 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3121 struct qeth_reply *reply, unsigned long data) 3122 { 3123 struct qeth_ipa_cmd *cmd; 3124 __u16 rc; 3125 3126 cmd = (struct qeth_ipa_cmd *)data; 3127 rc = cmd->hdr.return_code; 3128 if (rc) 3129 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3130 else 3131 card->info.diagass_support = cmd->data.diagass.ext; 3132 return 0; 3133 } 3134 3135 static int qeth_query_setdiagass(struct qeth_card *card) 3136 { 3137 struct qeth_cmd_buffer *iob; 3138 struct qeth_ipa_cmd *cmd; 3139 3140 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3141 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3142 if (!iob) 3143 return -ENOMEM; 3144 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3145 cmd->data.diagass.subcmd_len = 16; 3146 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3147 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3148 } 3149 3150 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3151 { 3152 unsigned long info = get_zeroed_page(GFP_KERNEL); 3153 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3154 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3155 struct ccw_dev_id ccwid; 3156 int level; 3157 3158 tid->chpid = card->info.chpid; 3159 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3160 tid->ssid = ccwid.ssid; 3161 tid->devno = ccwid.devno; 3162 if (!info) 3163 return; 3164 level = stsi(NULL, 0, 0, 0); 3165 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3166 tid->lparnr = info222->lpar_number; 3167 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3168 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3169 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3170 } 3171 free_page(info); 3172 return; 3173 } 3174 3175 static int qeth_hw_trap_cb(struct qeth_card *card, 3176 struct qeth_reply *reply, unsigned long data) 3177 { 3178 struct qeth_ipa_cmd *cmd; 3179 __u16 rc; 3180 3181 cmd = (struct qeth_ipa_cmd *)data; 3182 rc = cmd->hdr.return_code; 3183 if (rc) 3184 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3185 return 0; 3186 } 3187 3188 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3189 { 3190 struct qeth_cmd_buffer *iob; 3191 struct qeth_ipa_cmd *cmd; 3192 3193 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3194 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3195 if (!iob) 3196 return -ENOMEM; 3197 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3198 cmd->data.diagass.subcmd_len = 80; 3199 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3200 cmd->data.diagass.type = 1; 3201 cmd->data.diagass.action = action; 3202 switch (action) { 3203 case QETH_DIAGS_TRAP_ARM: 3204 cmd->data.diagass.options = 0x0003; 3205 cmd->data.diagass.ext = 0x00010000 + 3206 sizeof(struct qeth_trap_id); 3207 qeth_get_trap_id(card, 3208 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3209 break; 3210 case QETH_DIAGS_TRAP_DISARM: 3211 cmd->data.diagass.options = 0x0001; 3212 break; 3213 case QETH_DIAGS_TRAP_CAPTURE: 3214 break; 3215 } 3216 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3217 } 3218 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3219 3220 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf, 3221 unsigned int qdio_error, const char *dbftext) 3222 { 3223 if (qdio_error) { 3224 QETH_CARD_TEXT(card, 2, dbftext); 3225 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3226 buf->element[15].sflags); 3227 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3228 buf->element[14].sflags); 3229 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3230 if ((buf->element[15].sflags) == 0x12) { 3231 card->stats.rx_dropped++; 3232 return 0; 3233 } else 3234 return 1; 3235 } 3236 return 0; 3237 } 3238 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors); 3239 3240 static void qeth_buffer_reclaim_work(struct work_struct *work) 3241 { 3242 struct qeth_card *card = container_of(work, struct qeth_card, 3243 buffer_reclaim_work.work); 3244 3245 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3246 qeth_queue_input_buffer(card, card->reclaim_index); 3247 } 3248 3249 void qeth_queue_input_buffer(struct qeth_card *card, int index) 3250 { 3251 struct qeth_qdio_q *queue = card->qdio.in_q; 3252 struct list_head *lh; 3253 int count; 3254 int i; 3255 int rc; 3256 int newcount = 0; 3257 3258 count = (index < queue->next_buf_to_init)? 3259 card->qdio.in_buf_pool.buf_count - 3260 (queue->next_buf_to_init - index) : 3261 card->qdio.in_buf_pool.buf_count - 3262 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3263 /* only requeue at a certain threshold to avoid SIGAs */ 3264 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3265 for (i = queue->next_buf_to_init; 3266 i < queue->next_buf_to_init + count; ++i) { 3267 if (qeth_init_input_buffer(card, 3268 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3269 break; 3270 } else { 3271 newcount++; 3272 } 3273 } 3274 3275 if (newcount < count) { 3276 /* we are in memory shortage so we switch back to 3277 traditional skb allocation and drop packages */ 3278 atomic_set(&card->force_alloc_skb, 3); 3279 count = newcount; 3280 } else { 3281 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3282 } 3283 3284 if (!count) { 3285 i = 0; 3286 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3287 i++; 3288 if (i == card->qdio.in_buf_pool.buf_count) { 3289 QETH_CARD_TEXT(card, 2, "qsarbw"); 3290 card->reclaim_index = index; 3291 schedule_delayed_work( 3292 &card->buffer_reclaim_work, 3293 QETH_RECLAIM_WORK_TIME); 3294 } 3295 return; 3296 } 3297 3298 /* 3299 * according to old code it should be avoided to requeue all 3300 * 128 buffers in order to benefit from PCI avoidance. 3301 * this function keeps at least one buffer (the buffer at 3302 * 'index') un-requeued -> this buffer is the first buffer that 3303 * will be requeued the next time 3304 */ 3305 if (card->options.performance_stats) { 3306 card->perf_stats.inbound_do_qdio_cnt++; 3307 card->perf_stats.inbound_do_qdio_start_time = 3308 qeth_get_micros(); 3309 } 3310 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3311 queue->next_buf_to_init, count); 3312 if (card->options.performance_stats) 3313 card->perf_stats.inbound_do_qdio_time += 3314 qeth_get_micros() - 3315 card->perf_stats.inbound_do_qdio_start_time; 3316 if (rc) { 3317 QETH_CARD_TEXT(card, 2, "qinberr"); 3318 } 3319 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3320 QDIO_MAX_BUFFERS_PER_Q; 3321 } 3322 } 3323 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer); 3324 3325 static int qeth_handle_send_error(struct qeth_card *card, 3326 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3327 { 3328 int sbalf15 = buffer->buffer->element[15].sflags; 3329 3330 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3331 if (card->info.type == QETH_CARD_TYPE_IQD) { 3332 if (sbalf15 == 0) { 3333 qdio_err = 0; 3334 } else { 3335 qdio_err = 1; 3336 } 3337 } 3338 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3339 3340 if (!qdio_err) 3341 return QETH_SEND_ERROR_NONE; 3342 3343 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3344 return QETH_SEND_ERROR_RETRY; 3345 3346 QETH_CARD_TEXT(card, 1, "lnkfail"); 3347 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3348 (u16)qdio_err, (u8)sbalf15); 3349 return QETH_SEND_ERROR_LINK_FAILURE; 3350 } 3351 3352 /* 3353 * Switched to packing state if the number of used buffers on a queue 3354 * reaches a certain limit. 3355 */ 3356 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3357 { 3358 if (!queue->do_pack) { 3359 if (atomic_read(&queue->used_buffers) 3360 >= QETH_HIGH_WATERMARK_PACK){ 3361 /* switch non-PACKING -> PACKING */ 3362 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3363 if (queue->card->options.performance_stats) 3364 queue->card->perf_stats.sc_dp_p++; 3365 queue->do_pack = 1; 3366 } 3367 } 3368 } 3369 3370 /* 3371 * Switches from packing to non-packing mode. If there is a packing 3372 * buffer on the queue this buffer will be prepared to be flushed. 3373 * In that case 1 is returned to inform the caller. If no buffer 3374 * has to be flushed, zero is returned. 3375 */ 3376 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3377 { 3378 struct qeth_qdio_out_buffer *buffer; 3379 int flush_count = 0; 3380 3381 if (queue->do_pack) { 3382 if (atomic_read(&queue->used_buffers) 3383 <= QETH_LOW_WATERMARK_PACK) { 3384 /* switch PACKING -> non-PACKING */ 3385 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3386 if (queue->card->options.performance_stats) 3387 queue->card->perf_stats.sc_p_dp++; 3388 queue->do_pack = 0; 3389 /* flush packing buffers */ 3390 buffer = queue->bufs[queue->next_buf_to_fill]; 3391 if ((atomic_read(&buffer->state) == 3392 QETH_QDIO_BUF_EMPTY) && 3393 (buffer->next_element_to_fill > 0)) { 3394 atomic_set(&buffer->state, 3395 QETH_QDIO_BUF_PRIMED); 3396 flush_count++; 3397 queue->next_buf_to_fill = 3398 (queue->next_buf_to_fill + 1) % 3399 QDIO_MAX_BUFFERS_PER_Q; 3400 } 3401 } 3402 } 3403 return flush_count; 3404 } 3405 3406 3407 /* 3408 * Called to flush a packing buffer if no more pci flags are on the queue. 3409 * Checks if there is a packing buffer and prepares it to be flushed. 3410 * In that case returns 1, otherwise zero. 3411 */ 3412 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue) 3413 { 3414 struct qeth_qdio_out_buffer *buffer; 3415 3416 buffer = queue->bufs[queue->next_buf_to_fill]; 3417 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3418 (buffer->next_element_to_fill > 0)) { 3419 /* it's a packing buffer */ 3420 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3421 queue->next_buf_to_fill = 3422 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3423 return 1; 3424 } 3425 return 0; 3426 } 3427 3428 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3429 int count) 3430 { 3431 struct qeth_qdio_out_buffer *buf; 3432 int rc; 3433 int i; 3434 unsigned int qdio_flags; 3435 3436 for (i = index; i < index + count; ++i) { 3437 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3438 buf = queue->bufs[bidx]; 3439 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3440 SBAL_EFLAGS_LAST_ENTRY; 3441 3442 if (queue->bufstates) 3443 queue->bufstates[bidx].user = buf; 3444 3445 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3446 continue; 3447 3448 if (!queue->do_pack) { 3449 if ((atomic_read(&queue->used_buffers) >= 3450 (QETH_HIGH_WATERMARK_PACK - 3451 QETH_WATERMARK_PACK_FUZZ)) && 3452 !atomic_read(&queue->set_pci_flags_count)) { 3453 /* it's likely that we'll go to packing 3454 * mode soon */ 3455 atomic_inc(&queue->set_pci_flags_count); 3456 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3457 } 3458 } else { 3459 if (!atomic_read(&queue->set_pci_flags_count)) { 3460 /* 3461 * there's no outstanding PCI any more, so we 3462 * have to request a PCI to be sure the the PCI 3463 * will wake at some time in the future then we 3464 * can flush packed buffers that might still be 3465 * hanging around, which can happen if no 3466 * further send was requested by the stack 3467 */ 3468 atomic_inc(&queue->set_pci_flags_count); 3469 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3470 } 3471 } 3472 } 3473 3474 netif_trans_update(queue->card->dev); 3475 if (queue->card->options.performance_stats) { 3476 queue->card->perf_stats.outbound_do_qdio_cnt++; 3477 queue->card->perf_stats.outbound_do_qdio_start_time = 3478 qeth_get_micros(); 3479 } 3480 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3481 if (atomic_read(&queue->set_pci_flags_count)) 3482 qdio_flags |= QDIO_FLAG_PCI_OUT; 3483 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3484 queue->queue_no, index, count); 3485 if (queue->card->options.performance_stats) 3486 queue->card->perf_stats.outbound_do_qdio_time += 3487 qeth_get_micros() - 3488 queue->card->perf_stats.outbound_do_qdio_start_time; 3489 atomic_add(count, &queue->used_buffers); 3490 if (rc) { 3491 queue->card->stats.tx_errors += count; 3492 /* ignore temporary SIGA errors without busy condition */ 3493 if (rc == -ENOBUFS) 3494 return; 3495 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3496 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3497 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3498 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3499 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3500 3501 /* this must not happen under normal circumstances. if it 3502 * happens something is really wrong -> recover */ 3503 qeth_schedule_recovery(queue->card); 3504 return; 3505 } 3506 if (queue->card->options.performance_stats) 3507 queue->card->perf_stats.bufs_sent += count; 3508 } 3509 3510 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3511 { 3512 int index; 3513 int flush_cnt = 0; 3514 int q_was_packing = 0; 3515 3516 /* 3517 * check if weed have to switch to non-packing mode or if 3518 * we have to get a pci flag out on the queue 3519 */ 3520 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3521 !atomic_read(&queue->set_pci_flags_count)) { 3522 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3523 QETH_OUT_Q_UNLOCKED) { 3524 /* 3525 * If we get in here, there was no action in 3526 * do_send_packet. So, we check if there is a 3527 * packing buffer to be flushed here. 3528 */ 3529 netif_stop_queue(queue->card->dev); 3530 index = queue->next_buf_to_fill; 3531 q_was_packing = queue->do_pack; 3532 /* queue->do_pack may change */ 3533 barrier(); 3534 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3535 if (!flush_cnt && 3536 !atomic_read(&queue->set_pci_flags_count)) 3537 flush_cnt += 3538 qeth_flush_buffers_on_no_pci(queue); 3539 if (queue->card->options.performance_stats && 3540 q_was_packing) 3541 queue->card->perf_stats.bufs_sent_pack += 3542 flush_cnt; 3543 if (flush_cnt) 3544 qeth_flush_buffers(queue, index, flush_cnt); 3545 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3546 } 3547 } 3548 } 3549 3550 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3551 unsigned long card_ptr) 3552 { 3553 struct qeth_card *card = (struct qeth_card *)card_ptr; 3554 3555 if (card->dev && (card->dev->flags & IFF_UP)) 3556 napi_schedule(&card->napi); 3557 } 3558 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3559 3560 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3561 { 3562 int rc; 3563 3564 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3565 rc = -1; 3566 goto out; 3567 } else { 3568 if (card->options.cq == cq) { 3569 rc = 0; 3570 goto out; 3571 } 3572 3573 if (card->state != CARD_STATE_DOWN && 3574 card->state != CARD_STATE_RECOVER) { 3575 rc = -1; 3576 goto out; 3577 } 3578 3579 qeth_free_qdio_buffers(card); 3580 card->options.cq = cq; 3581 rc = 0; 3582 } 3583 out: 3584 return rc; 3585 3586 } 3587 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3588 3589 3590 static void qeth_qdio_cq_handler(struct qeth_card *card, 3591 unsigned int qdio_err, 3592 unsigned int queue, int first_element, int count) { 3593 struct qeth_qdio_q *cq = card->qdio.c_q; 3594 int i; 3595 int rc; 3596 3597 if (!qeth_is_cq(card, queue)) 3598 goto out; 3599 3600 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3601 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3602 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3603 3604 if (qdio_err) { 3605 netif_stop_queue(card->dev); 3606 qeth_schedule_recovery(card); 3607 goto out; 3608 } 3609 3610 if (card->options.performance_stats) { 3611 card->perf_stats.cq_cnt++; 3612 card->perf_stats.cq_start_time = qeth_get_micros(); 3613 } 3614 3615 for (i = first_element; i < first_element + count; ++i) { 3616 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3617 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3618 int e; 3619 3620 e = 0; 3621 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3622 buffer->element[e].addr) { 3623 unsigned long phys_aob_addr; 3624 3625 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3626 qeth_qdio_handle_aob(card, phys_aob_addr); 3627 buffer->element[e].addr = NULL; 3628 buffer->element[e].eflags = 0; 3629 buffer->element[e].sflags = 0; 3630 buffer->element[e].length = 0; 3631 3632 ++e; 3633 } 3634 3635 buffer->element[15].eflags = 0; 3636 buffer->element[15].sflags = 0; 3637 } 3638 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3639 card->qdio.c_q->next_buf_to_init, 3640 count); 3641 if (rc) { 3642 dev_warn(&card->gdev->dev, 3643 "QDIO reported an error, rc=%i\n", rc); 3644 QETH_CARD_TEXT(card, 2, "qcqherr"); 3645 } 3646 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3647 + count) % QDIO_MAX_BUFFERS_PER_Q; 3648 3649 netif_wake_queue(card->dev); 3650 3651 if (card->options.performance_stats) { 3652 int delta_t = qeth_get_micros(); 3653 delta_t -= card->perf_stats.cq_start_time; 3654 card->perf_stats.cq_time += delta_t; 3655 } 3656 out: 3657 return; 3658 } 3659 3660 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3661 unsigned int queue, int first_elem, int count, 3662 unsigned long card_ptr) 3663 { 3664 struct qeth_card *card = (struct qeth_card *)card_ptr; 3665 3666 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3667 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3668 3669 if (qeth_is_cq(card, queue)) 3670 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3671 else if (qdio_err) 3672 qeth_schedule_recovery(card); 3673 3674 3675 } 3676 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3677 3678 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3679 unsigned int qdio_error, int __queue, int first_element, 3680 int count, unsigned long card_ptr) 3681 { 3682 struct qeth_card *card = (struct qeth_card *) card_ptr; 3683 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3684 struct qeth_qdio_out_buffer *buffer; 3685 int i; 3686 3687 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3688 if (qdio_error & QDIO_ERROR_FATAL) { 3689 QETH_CARD_TEXT(card, 2, "achkcond"); 3690 netif_stop_queue(card->dev); 3691 qeth_schedule_recovery(card); 3692 return; 3693 } 3694 if (card->options.performance_stats) { 3695 card->perf_stats.outbound_handler_cnt++; 3696 card->perf_stats.outbound_handler_start_time = 3697 qeth_get_micros(); 3698 } 3699 for (i = first_element; i < (first_element + count); ++i) { 3700 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3701 buffer = queue->bufs[bidx]; 3702 qeth_handle_send_error(card, buffer, qdio_error); 3703 3704 if (queue->bufstates && 3705 (queue->bufstates[bidx].flags & 3706 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3707 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3708 3709 if (atomic_cmpxchg(&buffer->state, 3710 QETH_QDIO_BUF_PRIMED, 3711 QETH_QDIO_BUF_PENDING) == 3712 QETH_QDIO_BUF_PRIMED) { 3713 qeth_notify_skbs(queue, buffer, 3714 TX_NOTIFY_PENDING); 3715 } 3716 buffer->aob = queue->bufstates[bidx].aob; 3717 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3718 QETH_CARD_TEXT(queue->card, 5, "aob"); 3719 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3720 virt_to_phys(buffer->aob)); 3721 if (qeth_init_qdio_out_buf(queue, bidx)) { 3722 QETH_CARD_TEXT(card, 2, "outofbuf"); 3723 qeth_schedule_recovery(card); 3724 } 3725 } else { 3726 if (card->options.cq == QETH_CQ_ENABLED) { 3727 enum iucv_tx_notify n; 3728 3729 n = qeth_compute_cq_notification( 3730 buffer->buffer->element[15].sflags, 0); 3731 qeth_notify_skbs(queue, buffer, n); 3732 } 3733 3734 qeth_clear_output_buffer(queue, buffer, 3735 QETH_QDIO_BUF_EMPTY); 3736 } 3737 qeth_cleanup_handled_pending(queue, bidx, 0); 3738 } 3739 atomic_sub(count, &queue->used_buffers); 3740 /* check if we need to do something on this outbound queue */ 3741 if (card->info.type != QETH_CARD_TYPE_IQD) 3742 qeth_check_outbound_queue(queue); 3743 3744 netif_wake_queue(queue->card->dev); 3745 if (card->options.performance_stats) 3746 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3747 card->perf_stats.outbound_handler_start_time; 3748 } 3749 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3750 3751 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3752 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3753 { 3754 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3755 return 2; 3756 return queue_num; 3757 } 3758 3759 /** 3760 * Note: Function assumes that we have 4 outbound queues. 3761 */ 3762 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3763 int ipv, int cast_type) 3764 { 3765 __be16 *tci; 3766 u8 tos; 3767 3768 if (cast_type && card->info.is_multicast_different) 3769 return card->info.is_multicast_different & 3770 (card->qdio.no_out_queues - 1); 3771 3772 switch (card->qdio.do_prio_queueing) { 3773 case QETH_PRIO_Q_ING_TOS: 3774 case QETH_PRIO_Q_ING_PREC: 3775 switch (ipv) { 3776 case 4: 3777 tos = ipv4_get_dsfield(ip_hdr(skb)); 3778 break; 3779 case 6: 3780 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3781 break; 3782 default: 3783 return card->qdio.default_out_queue; 3784 } 3785 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3786 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3787 if (tos & IPTOS_MINCOST) 3788 return qeth_cut_iqd_prio(card, 3); 3789 if (tos & IPTOS_RELIABILITY) 3790 return 2; 3791 if (tos & IPTOS_THROUGHPUT) 3792 return 1; 3793 if (tos & IPTOS_LOWDELAY) 3794 return 0; 3795 break; 3796 case QETH_PRIO_Q_ING_SKB: 3797 if (skb->priority > 5) 3798 return 0; 3799 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3800 case QETH_PRIO_Q_ING_VLAN: 3801 tci = &((struct ethhdr *)skb->data)->h_proto; 3802 if (*tci == ETH_P_8021Q) 3803 return qeth_cut_iqd_prio(card, ~*(tci + 1) >> 3804 (VLAN_PRIO_SHIFT + 1) & 3); 3805 break; 3806 default: 3807 break; 3808 } 3809 return card->qdio.default_out_queue; 3810 } 3811 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3812 3813 /** 3814 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3815 * @skb: SKB address 3816 * 3817 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3818 * fragmented part of the SKB. Returns zero for linear SKB. 3819 */ 3820 int qeth_get_elements_for_frags(struct sk_buff *skb) 3821 { 3822 int cnt, elements = 0; 3823 3824 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3825 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3826 3827 elements += qeth_get_elements_for_range( 3828 (addr_t)skb_frag_address(frag), 3829 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3830 } 3831 return elements; 3832 } 3833 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3834 3835 /** 3836 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3837 * @card: qeth card structure, to check max. elems. 3838 * @skb: SKB address 3839 * @extra_elems: extra elems needed, to check against max. 3840 * 3841 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3842 * skb data, including linear part and fragments. Checks if the result plus 3843 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3844 * Note: extra_elems is not included in the returned result. 3845 */ 3846 int qeth_get_elements_no(struct qeth_card *card, 3847 struct sk_buff *skb, int extra_elems) 3848 { 3849 int elements = qeth_get_elements_for_range( 3850 (addr_t)skb->data, 3851 (addr_t)skb->data + skb_headlen(skb)) + 3852 qeth_get_elements_for_frags(skb); 3853 3854 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3855 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3856 "(Number=%d / Length=%d). Discarded.\n", 3857 elements + extra_elems, skb->len); 3858 return 0; 3859 } 3860 return elements; 3861 } 3862 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3863 3864 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3865 { 3866 int hroom, inpage, rest; 3867 3868 if (((unsigned long)skb->data & PAGE_MASK) != 3869 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3870 hroom = skb_headroom(skb); 3871 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3872 rest = len - inpage; 3873 if (rest > hroom) 3874 return 1; 3875 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3876 skb->data -= rest; 3877 skb->tail -= rest; 3878 *hdr = (struct qeth_hdr *)skb->data; 3879 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3880 } 3881 return 0; 3882 } 3883 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3884 3885 static inline void __qeth_fill_buffer(struct sk_buff *skb, 3886 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, 3887 int offset) 3888 { 3889 int length = skb_headlen(skb); 3890 int length_here; 3891 int element; 3892 char *data; 3893 int first_lap, cnt; 3894 struct skb_frag_struct *frag; 3895 3896 element = *next_element_to_fill; 3897 data = skb->data; 3898 first_lap = (is_tso == 0 ? 1 : 0); 3899 3900 if (offset >= 0) { 3901 data = skb->data + offset; 3902 length -= offset; 3903 first_lap = 0; 3904 } 3905 3906 while (length > 0) { 3907 /* length_here is the remaining amount of data in this page */ 3908 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3909 if (length < length_here) 3910 length_here = length; 3911 3912 buffer->element[element].addr = data; 3913 buffer->element[element].length = length_here; 3914 length -= length_here; 3915 if (!length) { 3916 if (first_lap) 3917 if (skb_shinfo(skb)->nr_frags) 3918 buffer->element[element].eflags = 3919 SBAL_EFLAGS_FIRST_FRAG; 3920 else 3921 buffer->element[element].eflags = 0; 3922 else 3923 buffer->element[element].eflags = 3924 SBAL_EFLAGS_MIDDLE_FRAG; 3925 } else { 3926 if (first_lap) 3927 buffer->element[element].eflags = 3928 SBAL_EFLAGS_FIRST_FRAG; 3929 else 3930 buffer->element[element].eflags = 3931 SBAL_EFLAGS_MIDDLE_FRAG; 3932 } 3933 data += length_here; 3934 element++; 3935 first_lap = 0; 3936 } 3937 3938 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3939 frag = &skb_shinfo(skb)->frags[cnt]; 3940 data = (char *)page_to_phys(skb_frag_page(frag)) + 3941 frag->page_offset; 3942 length = frag->size; 3943 while (length > 0) { 3944 length_here = PAGE_SIZE - 3945 ((unsigned long) data % PAGE_SIZE); 3946 if (length < length_here) 3947 length_here = length; 3948 3949 buffer->element[element].addr = data; 3950 buffer->element[element].length = length_here; 3951 buffer->element[element].eflags = 3952 SBAL_EFLAGS_MIDDLE_FRAG; 3953 length -= length_here; 3954 data += length_here; 3955 element++; 3956 } 3957 } 3958 3959 if (buffer->element[element - 1].eflags) 3960 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3961 *next_element_to_fill = element; 3962 } 3963 3964 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 3965 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, 3966 struct qeth_hdr *hdr, int offset, int hd_len) 3967 { 3968 struct qdio_buffer *buffer; 3969 int flush_cnt = 0, hdr_len, large_send = 0; 3970 3971 buffer = buf->buffer; 3972 atomic_inc(&skb->users); 3973 skb_queue_tail(&buf->skb_list, skb); 3974 3975 /*check first on TSO ....*/ 3976 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) { 3977 int element = buf->next_element_to_fill; 3978 3979 hdr_len = sizeof(struct qeth_hdr_tso) + 3980 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len; 3981 /*fill first buffer entry only with header information */ 3982 buffer->element[element].addr = skb->data; 3983 buffer->element[element].length = hdr_len; 3984 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3985 buf->next_element_to_fill++; 3986 skb->data += hdr_len; 3987 skb->len -= hdr_len; 3988 large_send = 1; 3989 } 3990 3991 if (offset >= 0) { 3992 int element = buf->next_element_to_fill; 3993 buffer->element[element].addr = hdr; 3994 buffer->element[element].length = sizeof(struct qeth_hdr) + 3995 hd_len; 3996 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3997 buf->is_header[element] = 1; 3998 buf->next_element_to_fill++; 3999 } 4000 4001 __qeth_fill_buffer(skb, buffer, large_send, 4002 (int *)&buf->next_element_to_fill, offset); 4003 4004 if (!queue->do_pack) { 4005 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4006 /* set state to PRIMED -> will be flushed */ 4007 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4008 flush_cnt = 1; 4009 } else { 4010 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4011 if (queue->card->options.performance_stats) 4012 queue->card->perf_stats.skbs_sent_pack++; 4013 if (buf->next_element_to_fill >= 4014 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4015 /* 4016 * packed buffer if full -> set state PRIMED 4017 * -> will be flushed 4018 */ 4019 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4020 flush_cnt = 1; 4021 } 4022 } 4023 return flush_cnt; 4024 } 4025 4026 int qeth_do_send_packet_fast(struct qeth_card *card, 4027 struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4028 struct qeth_hdr *hdr, int elements_needed, 4029 int offset, int hd_len) 4030 { 4031 struct qeth_qdio_out_buffer *buffer; 4032 int index; 4033 4034 /* spin until we get the queue ... */ 4035 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4036 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4037 /* ... now we've got the queue */ 4038 index = queue->next_buf_to_fill; 4039 buffer = queue->bufs[queue->next_buf_to_fill]; 4040 /* 4041 * check if buffer is empty to make sure that we do not 'overtake' 4042 * ourselves and try to fill a buffer that is already primed 4043 */ 4044 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4045 goto out; 4046 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % 4047 QDIO_MAX_BUFFERS_PER_Q; 4048 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4049 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4050 qeth_flush_buffers(queue, index, 1); 4051 return 0; 4052 out: 4053 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4054 return -EBUSY; 4055 } 4056 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4057 4058 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4059 struct sk_buff *skb, struct qeth_hdr *hdr, 4060 int elements_needed) 4061 { 4062 struct qeth_qdio_out_buffer *buffer; 4063 int start_index; 4064 int flush_count = 0; 4065 int do_pack = 0; 4066 int tmp; 4067 int rc = 0; 4068 4069 /* spin until we get the queue ... */ 4070 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4071 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4072 start_index = queue->next_buf_to_fill; 4073 buffer = queue->bufs[queue->next_buf_to_fill]; 4074 /* 4075 * check if buffer is empty to make sure that we do not 'overtake' 4076 * ourselves and try to fill a buffer that is already primed 4077 */ 4078 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4079 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4080 return -EBUSY; 4081 } 4082 /* check if we need to switch packing state of this queue */ 4083 qeth_switch_to_packing_if_needed(queue); 4084 if (queue->do_pack) { 4085 do_pack = 1; 4086 /* does packet fit in current buffer? */ 4087 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4088 buffer->next_element_to_fill) < elements_needed) { 4089 /* ... no -> set state PRIMED */ 4090 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4091 flush_count++; 4092 queue->next_buf_to_fill = 4093 (queue->next_buf_to_fill + 1) % 4094 QDIO_MAX_BUFFERS_PER_Q; 4095 buffer = queue->bufs[queue->next_buf_to_fill]; 4096 /* we did a step forward, so check buffer state 4097 * again */ 4098 if (atomic_read(&buffer->state) != 4099 QETH_QDIO_BUF_EMPTY) { 4100 qeth_flush_buffers(queue, start_index, 4101 flush_count); 4102 atomic_set(&queue->state, 4103 QETH_OUT_Q_UNLOCKED); 4104 return -EBUSY; 4105 } 4106 } 4107 } 4108 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0); 4109 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4110 QDIO_MAX_BUFFERS_PER_Q; 4111 flush_count += tmp; 4112 if (flush_count) 4113 qeth_flush_buffers(queue, start_index, flush_count); 4114 else if (!atomic_read(&queue->set_pci_flags_count)) 4115 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4116 /* 4117 * queue->state will go from LOCKED -> UNLOCKED or from 4118 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4119 * (switch packing state or flush buffer to get another pci flag out). 4120 * In that case we will enter this loop 4121 */ 4122 while (atomic_dec_return(&queue->state)) { 4123 flush_count = 0; 4124 start_index = queue->next_buf_to_fill; 4125 /* check if we can go back to non-packing state */ 4126 flush_count += qeth_switch_to_nonpacking_if_needed(queue); 4127 /* 4128 * check if we need to flush a packing buffer to get a pci 4129 * flag out on the queue 4130 */ 4131 if (!flush_count && !atomic_read(&queue->set_pci_flags_count)) 4132 flush_count += qeth_flush_buffers_on_no_pci(queue); 4133 if (flush_count) 4134 qeth_flush_buffers(queue, start_index, flush_count); 4135 } 4136 /* at this point the queue is UNLOCKED again */ 4137 if (queue->card->options.performance_stats && do_pack) 4138 queue->card->perf_stats.bufs_sent_pack += flush_count; 4139 4140 return rc; 4141 } 4142 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4143 4144 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4145 struct qeth_reply *reply, unsigned long data) 4146 { 4147 struct qeth_ipa_cmd *cmd; 4148 struct qeth_ipacmd_setadpparms *setparms; 4149 4150 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4151 4152 cmd = (struct qeth_ipa_cmd *) data; 4153 setparms = &(cmd->data.setadapterparms); 4154 4155 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4156 if (cmd->hdr.return_code) { 4157 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4158 setparms->data.mode = SET_PROMISC_MODE_OFF; 4159 } 4160 card->info.promisc_mode = setparms->data.mode; 4161 return 0; 4162 } 4163 4164 void qeth_setadp_promisc_mode(struct qeth_card *card) 4165 { 4166 enum qeth_ipa_promisc_modes mode; 4167 struct net_device *dev = card->dev; 4168 struct qeth_cmd_buffer *iob; 4169 struct qeth_ipa_cmd *cmd; 4170 4171 QETH_CARD_TEXT(card, 4, "setprom"); 4172 4173 if (((dev->flags & IFF_PROMISC) && 4174 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4175 (!(dev->flags & IFF_PROMISC) && 4176 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4177 return; 4178 mode = SET_PROMISC_MODE_OFF; 4179 if (dev->flags & IFF_PROMISC) 4180 mode = SET_PROMISC_MODE_ON; 4181 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4182 4183 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4184 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4185 if (!iob) 4186 return; 4187 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4188 cmd->data.setadapterparms.data.mode = mode; 4189 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4190 } 4191 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4192 4193 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4194 { 4195 struct qeth_card *card; 4196 char dbf_text[15]; 4197 4198 card = dev->ml_priv; 4199 4200 QETH_CARD_TEXT(card, 4, "chgmtu"); 4201 sprintf(dbf_text, "%8x", new_mtu); 4202 QETH_CARD_TEXT(card, 4, dbf_text); 4203 4204 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) && 4205 (!qeth_mtu_is_valid(card, new_mtu))) 4206 return -EINVAL; 4207 dev->mtu = new_mtu; 4208 return 0; 4209 } 4210 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4211 4212 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4213 { 4214 struct qeth_card *card; 4215 4216 card = dev->ml_priv; 4217 4218 QETH_CARD_TEXT(card, 5, "getstat"); 4219 4220 return &card->stats; 4221 } 4222 EXPORT_SYMBOL_GPL(qeth_get_stats); 4223 4224 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4225 struct qeth_reply *reply, unsigned long data) 4226 { 4227 struct qeth_ipa_cmd *cmd; 4228 4229 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4230 4231 cmd = (struct qeth_ipa_cmd *) data; 4232 if (!card->options.layer2 || 4233 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4234 memcpy(card->dev->dev_addr, 4235 &cmd->data.setadapterparms.data.change_addr.addr, 4236 OSA_ADDR_LEN); 4237 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4238 } 4239 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4240 return 0; 4241 } 4242 4243 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4244 { 4245 int rc; 4246 struct qeth_cmd_buffer *iob; 4247 struct qeth_ipa_cmd *cmd; 4248 4249 QETH_CARD_TEXT(card, 4, "chgmac"); 4250 4251 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4252 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4253 sizeof(struct qeth_change_addr)); 4254 if (!iob) 4255 return -ENOMEM; 4256 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4257 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4258 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; 4259 memcpy(&cmd->data.setadapterparms.data.change_addr.addr, 4260 card->dev->dev_addr, OSA_ADDR_LEN); 4261 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4262 NULL); 4263 return rc; 4264 } 4265 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4266 4267 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4268 struct qeth_reply *reply, unsigned long data) 4269 { 4270 struct qeth_ipa_cmd *cmd; 4271 struct qeth_set_access_ctrl *access_ctrl_req; 4272 int fallback = *(int *)reply->param; 4273 4274 QETH_CARD_TEXT(card, 4, "setaccb"); 4275 4276 cmd = (struct qeth_ipa_cmd *) data; 4277 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4278 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4279 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4280 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4281 cmd->data.setadapterparms.hdr.return_code); 4282 if (cmd->data.setadapterparms.hdr.return_code != 4283 SET_ACCESS_CTRL_RC_SUCCESS) 4284 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4285 card->gdev->dev.kobj.name, 4286 access_ctrl_req->subcmd_code, 4287 cmd->data.setadapterparms.hdr.return_code); 4288 switch (cmd->data.setadapterparms.hdr.return_code) { 4289 case SET_ACCESS_CTRL_RC_SUCCESS: 4290 if (card->options.isolation == ISOLATION_MODE_NONE) { 4291 dev_info(&card->gdev->dev, 4292 "QDIO data connection isolation is deactivated\n"); 4293 } else { 4294 dev_info(&card->gdev->dev, 4295 "QDIO data connection isolation is activated\n"); 4296 } 4297 break; 4298 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4299 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4300 "deactivated\n", dev_name(&card->gdev->dev)); 4301 if (fallback) 4302 card->options.isolation = card->options.prev_isolation; 4303 break; 4304 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4305 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4306 " activated\n", dev_name(&card->gdev->dev)); 4307 if (fallback) 4308 card->options.isolation = card->options.prev_isolation; 4309 break; 4310 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4311 dev_err(&card->gdev->dev, "Adapter does not " 4312 "support QDIO data connection isolation\n"); 4313 break; 4314 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4315 dev_err(&card->gdev->dev, 4316 "Adapter is dedicated. " 4317 "QDIO data connection isolation not supported\n"); 4318 if (fallback) 4319 card->options.isolation = card->options.prev_isolation; 4320 break; 4321 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4322 dev_err(&card->gdev->dev, 4323 "TSO does not permit QDIO data connection isolation\n"); 4324 if (fallback) 4325 card->options.isolation = card->options.prev_isolation; 4326 break; 4327 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4328 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4329 "support reflective relay mode\n"); 4330 if (fallback) 4331 card->options.isolation = card->options.prev_isolation; 4332 break; 4333 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4334 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4335 "enabled at the adjacent switch port"); 4336 if (fallback) 4337 card->options.isolation = card->options.prev_isolation; 4338 break; 4339 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4340 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4341 "at the adjacent switch failed\n"); 4342 break; 4343 default: 4344 /* this should never happen */ 4345 if (fallback) 4346 card->options.isolation = card->options.prev_isolation; 4347 break; 4348 } 4349 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4350 return 0; 4351 } 4352 4353 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4354 enum qeth_ipa_isolation_modes isolation, int fallback) 4355 { 4356 int rc; 4357 struct qeth_cmd_buffer *iob; 4358 struct qeth_ipa_cmd *cmd; 4359 struct qeth_set_access_ctrl *access_ctrl_req; 4360 4361 QETH_CARD_TEXT(card, 4, "setacctl"); 4362 4363 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4364 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4365 4366 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4367 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4368 sizeof(struct qeth_set_access_ctrl)); 4369 if (!iob) 4370 return -ENOMEM; 4371 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4372 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4373 access_ctrl_req->subcmd_code = isolation; 4374 4375 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4376 &fallback); 4377 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4378 return rc; 4379 } 4380 4381 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4382 { 4383 int rc = 0; 4384 4385 QETH_CARD_TEXT(card, 4, "setactlo"); 4386 4387 if ((card->info.type == QETH_CARD_TYPE_OSD || 4388 card->info.type == QETH_CARD_TYPE_OSX) && 4389 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4390 rc = qeth_setadpparms_set_access_ctrl(card, 4391 card->options.isolation, fallback); 4392 if (rc) { 4393 QETH_DBF_MESSAGE(3, 4394 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4395 card->gdev->dev.kobj.name, 4396 rc); 4397 rc = -EOPNOTSUPP; 4398 } 4399 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4400 card->options.isolation = ISOLATION_MODE_NONE; 4401 4402 dev_err(&card->gdev->dev, "Adapter does not " 4403 "support QDIO data connection isolation\n"); 4404 rc = -EOPNOTSUPP; 4405 } 4406 return rc; 4407 } 4408 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4409 4410 void qeth_tx_timeout(struct net_device *dev) 4411 { 4412 struct qeth_card *card; 4413 4414 card = dev->ml_priv; 4415 QETH_CARD_TEXT(card, 4, "txtimeo"); 4416 card->stats.tx_errors++; 4417 qeth_schedule_recovery(card); 4418 } 4419 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4420 4421 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4422 { 4423 struct qeth_card *card = dev->ml_priv; 4424 int rc = 0; 4425 4426 switch (regnum) { 4427 case MII_BMCR: /* Basic mode control register */ 4428 rc = BMCR_FULLDPLX; 4429 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4430 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4431 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4432 rc |= BMCR_SPEED100; 4433 break; 4434 case MII_BMSR: /* Basic mode status register */ 4435 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4436 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4437 BMSR_100BASE4; 4438 break; 4439 case MII_PHYSID1: /* PHYS ID 1 */ 4440 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4441 dev->dev_addr[2]; 4442 rc = (rc >> 5) & 0xFFFF; 4443 break; 4444 case MII_PHYSID2: /* PHYS ID 2 */ 4445 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4446 break; 4447 case MII_ADVERTISE: /* Advertisement control reg */ 4448 rc = ADVERTISE_ALL; 4449 break; 4450 case MII_LPA: /* Link partner ability reg */ 4451 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4452 LPA_100BASE4 | LPA_LPACK; 4453 break; 4454 case MII_EXPANSION: /* Expansion register */ 4455 break; 4456 case MII_DCOUNTER: /* disconnect counter */ 4457 break; 4458 case MII_FCSCOUNTER: /* false carrier counter */ 4459 break; 4460 case MII_NWAYTEST: /* N-way auto-neg test register */ 4461 break; 4462 case MII_RERRCOUNTER: /* rx error counter */ 4463 rc = card->stats.rx_errors; 4464 break; 4465 case MII_SREVISION: /* silicon revision */ 4466 break; 4467 case MII_RESV1: /* reserved 1 */ 4468 break; 4469 case MII_LBRERROR: /* loopback, rx, bypass error */ 4470 break; 4471 case MII_PHYADDR: /* physical address */ 4472 break; 4473 case MII_RESV2: /* reserved 2 */ 4474 break; 4475 case MII_TPISTATUS: /* TPI status for 10mbps */ 4476 break; 4477 case MII_NCONFIG: /* network interface config */ 4478 break; 4479 default: 4480 break; 4481 } 4482 return rc; 4483 } 4484 EXPORT_SYMBOL_GPL(qeth_mdio_read); 4485 4486 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4487 struct qeth_cmd_buffer *iob, int len, 4488 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4489 unsigned long), 4490 void *reply_param) 4491 { 4492 u16 s1, s2; 4493 4494 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4495 4496 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4497 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4498 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4499 /* adjust PDU length fields in IPA_PDU_HEADER */ 4500 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4501 s2 = (u32) len; 4502 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4503 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4504 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4505 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4506 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4507 reply_cb, reply_param); 4508 } 4509 4510 static int qeth_snmp_command_cb(struct qeth_card *card, 4511 struct qeth_reply *reply, unsigned long sdata) 4512 { 4513 struct qeth_ipa_cmd *cmd; 4514 struct qeth_arp_query_info *qinfo; 4515 struct qeth_snmp_cmd *snmp; 4516 unsigned char *data; 4517 __u16 data_len; 4518 4519 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4520 4521 cmd = (struct qeth_ipa_cmd *) sdata; 4522 data = (unsigned char *)((char *)cmd - reply->offset); 4523 qinfo = (struct qeth_arp_query_info *) reply->param; 4524 snmp = &cmd->data.setadapterparms.data.snmp; 4525 4526 if (cmd->hdr.return_code) { 4527 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4528 return 0; 4529 } 4530 if (cmd->data.setadapterparms.hdr.return_code) { 4531 cmd->hdr.return_code = 4532 cmd->data.setadapterparms.hdr.return_code; 4533 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4534 return 0; 4535 } 4536 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4537 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4538 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4539 else 4540 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4541 4542 /* check if there is enough room in userspace */ 4543 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4544 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4545 cmd->hdr.return_code = IPA_RC_ENOMEM; 4546 return 0; 4547 } 4548 QETH_CARD_TEXT_(card, 4, "snore%i", 4549 cmd->data.setadapterparms.hdr.used_total); 4550 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4551 cmd->data.setadapterparms.hdr.seq_no); 4552 /*copy entries to user buffer*/ 4553 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4554 memcpy(qinfo->udata + qinfo->udata_offset, 4555 (char *)snmp, 4556 data_len + offsetof(struct qeth_snmp_cmd, data)); 4557 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4558 } else { 4559 memcpy(qinfo->udata + qinfo->udata_offset, 4560 (char *)&snmp->request, data_len); 4561 } 4562 qinfo->udata_offset += data_len; 4563 /* check if all replies received ... */ 4564 QETH_CARD_TEXT_(card, 4, "srtot%i", 4565 cmd->data.setadapterparms.hdr.used_total); 4566 QETH_CARD_TEXT_(card, 4, "srseq%i", 4567 cmd->data.setadapterparms.hdr.seq_no); 4568 if (cmd->data.setadapterparms.hdr.seq_no < 4569 cmd->data.setadapterparms.hdr.used_total) 4570 return 1; 4571 return 0; 4572 } 4573 4574 int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4575 { 4576 struct qeth_cmd_buffer *iob; 4577 struct qeth_ipa_cmd *cmd; 4578 struct qeth_snmp_ureq *ureq; 4579 unsigned int req_len; 4580 struct qeth_arp_query_info qinfo = {0, }; 4581 int rc = 0; 4582 4583 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4584 4585 if (card->info.guestlan) 4586 return -EOPNOTSUPP; 4587 4588 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4589 (!card->options.layer2)) { 4590 return -EOPNOTSUPP; 4591 } 4592 /* skip 4 bytes (data_len struct member) to get req_len */ 4593 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4594 return -EFAULT; 4595 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4596 sizeof(struct qeth_ipacmd_hdr) - 4597 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4598 return -EINVAL; 4599 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4600 if (IS_ERR(ureq)) { 4601 QETH_CARD_TEXT(card, 2, "snmpnome"); 4602 return PTR_ERR(ureq); 4603 } 4604 qinfo.udata_len = ureq->hdr.data_len; 4605 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4606 if (!qinfo.udata) { 4607 kfree(ureq); 4608 return -ENOMEM; 4609 } 4610 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4611 4612 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4613 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4614 if (!iob) { 4615 rc = -ENOMEM; 4616 goto out; 4617 } 4618 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4619 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4620 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4621 qeth_snmp_command_cb, (void *)&qinfo); 4622 if (rc) 4623 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4624 QETH_CARD_IFNAME(card), rc); 4625 else { 4626 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4627 rc = -EFAULT; 4628 } 4629 out: 4630 kfree(ureq); 4631 kfree(qinfo.udata); 4632 return rc; 4633 } 4634 EXPORT_SYMBOL_GPL(qeth_snmp_command); 4635 4636 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4637 struct qeth_reply *reply, unsigned long data) 4638 { 4639 struct qeth_ipa_cmd *cmd; 4640 struct qeth_qoat_priv *priv; 4641 char *resdata; 4642 int resdatalen; 4643 4644 QETH_CARD_TEXT(card, 3, "qoatcb"); 4645 4646 cmd = (struct qeth_ipa_cmd *)data; 4647 priv = (struct qeth_qoat_priv *)reply->param; 4648 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4649 resdata = (char *)data + 28; 4650 4651 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4652 cmd->hdr.return_code = IPA_RC_FFFF; 4653 return 0; 4654 } 4655 4656 memcpy((priv->buffer + priv->response_len), resdata, 4657 resdatalen); 4658 priv->response_len += resdatalen; 4659 4660 if (cmd->data.setadapterparms.hdr.seq_no < 4661 cmd->data.setadapterparms.hdr.used_total) 4662 return 1; 4663 return 0; 4664 } 4665 4666 int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4667 { 4668 int rc = 0; 4669 struct qeth_cmd_buffer *iob; 4670 struct qeth_ipa_cmd *cmd; 4671 struct qeth_query_oat *oat_req; 4672 struct qeth_query_oat_data oat_data; 4673 struct qeth_qoat_priv priv; 4674 void __user *tmp; 4675 4676 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4677 4678 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4679 rc = -EOPNOTSUPP; 4680 goto out; 4681 } 4682 4683 if (copy_from_user(&oat_data, udata, 4684 sizeof(struct qeth_query_oat_data))) { 4685 rc = -EFAULT; 4686 goto out; 4687 } 4688 4689 priv.buffer_len = oat_data.buffer_len; 4690 priv.response_len = 0; 4691 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4692 if (!priv.buffer) { 4693 rc = -ENOMEM; 4694 goto out; 4695 } 4696 4697 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4698 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4699 sizeof(struct qeth_query_oat)); 4700 if (!iob) { 4701 rc = -ENOMEM; 4702 goto out_free; 4703 } 4704 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4705 oat_req = &cmd->data.setadapterparms.data.query_oat; 4706 oat_req->subcmd_code = oat_data.command; 4707 4708 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4709 &priv); 4710 if (!rc) { 4711 if (is_compat_task()) 4712 tmp = compat_ptr(oat_data.ptr); 4713 else 4714 tmp = (void __user *)(unsigned long)oat_data.ptr; 4715 4716 if (copy_to_user(tmp, priv.buffer, 4717 priv.response_len)) { 4718 rc = -EFAULT; 4719 goto out_free; 4720 } 4721 4722 oat_data.response_len = priv.response_len; 4723 4724 if (copy_to_user(udata, &oat_data, 4725 sizeof(struct qeth_query_oat_data))) 4726 rc = -EFAULT; 4727 } else 4728 if (rc == IPA_RC_FFFF) 4729 rc = -EFAULT; 4730 4731 out_free: 4732 kfree(priv.buffer); 4733 out: 4734 return rc; 4735 } 4736 EXPORT_SYMBOL_GPL(qeth_query_oat_command); 4737 4738 static int qeth_query_card_info_cb(struct qeth_card *card, 4739 struct qeth_reply *reply, unsigned long data) 4740 { 4741 struct qeth_ipa_cmd *cmd; 4742 struct qeth_query_card_info *card_info; 4743 struct carrier_info *carrier_info; 4744 4745 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4746 carrier_info = (struct carrier_info *)reply->param; 4747 cmd = (struct qeth_ipa_cmd *)data; 4748 card_info = &cmd->data.setadapterparms.data.card_info; 4749 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4750 carrier_info->card_type = card_info->card_type; 4751 carrier_info->port_mode = card_info->port_mode; 4752 carrier_info->port_speed = card_info->port_speed; 4753 } 4754 4755 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4756 return 0; 4757 } 4758 4759 static int qeth_query_card_info(struct qeth_card *card, 4760 struct carrier_info *carrier_info) 4761 { 4762 struct qeth_cmd_buffer *iob; 4763 4764 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4765 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4766 return -EOPNOTSUPP; 4767 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4768 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4769 if (!iob) 4770 return -ENOMEM; 4771 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4772 (void *)carrier_info); 4773 } 4774 4775 static inline int qeth_get_qdio_q_format(struct qeth_card *card) 4776 { 4777 switch (card->info.type) { 4778 case QETH_CARD_TYPE_IQD: 4779 return 2; 4780 default: 4781 return 0; 4782 } 4783 } 4784 4785 static void qeth_determine_capabilities(struct qeth_card *card) 4786 { 4787 int rc; 4788 int length; 4789 char *prcd; 4790 struct ccw_device *ddev; 4791 int ddev_offline = 0; 4792 4793 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4794 ddev = CARD_DDEV(card); 4795 if (!ddev->online) { 4796 ddev_offline = 1; 4797 rc = ccw_device_set_online(ddev); 4798 if (rc) { 4799 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4800 goto out; 4801 } 4802 } 4803 4804 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4805 if (rc) { 4806 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4807 dev_name(&card->gdev->dev), rc); 4808 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4809 goto out_offline; 4810 } 4811 qeth_configure_unitaddr(card, prcd); 4812 if (ddev_offline) 4813 qeth_configure_blkt_default(card, prcd); 4814 kfree(prcd); 4815 4816 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4817 if (rc) 4818 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4819 4820 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4821 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1); 4822 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3); 4823 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4824 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4825 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4826 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4827 dev_info(&card->gdev->dev, 4828 "Completion Queueing supported\n"); 4829 } else { 4830 card->options.cq = QETH_CQ_NOTAVAILABLE; 4831 } 4832 4833 4834 out_offline: 4835 if (ddev_offline == 1) 4836 ccw_device_set_offline(ddev); 4837 out: 4838 return; 4839 } 4840 4841 static inline void qeth_qdio_establish_cq(struct qeth_card *card, 4842 struct qdio_buffer **in_sbal_ptrs, 4843 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) { 4844 int i; 4845 4846 if (card->options.cq == QETH_CQ_ENABLED) { 4847 int offset = QDIO_MAX_BUFFERS_PER_Q * 4848 (card->qdio.no_in_queues - 1); 4849 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1); 4850 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4851 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4852 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4853 } 4854 4855 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4856 } 4857 } 4858 4859 static int qeth_qdio_establish(struct qeth_card *card) 4860 { 4861 struct qdio_initialize init_data; 4862 char *qib_param_field; 4863 struct qdio_buffer **in_sbal_ptrs; 4864 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4865 struct qdio_buffer **out_sbal_ptrs; 4866 int i, j, k; 4867 int rc = 0; 4868 4869 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4870 4871 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4872 GFP_KERNEL); 4873 if (!qib_param_field) { 4874 rc = -ENOMEM; 4875 goto out_free_nothing; 4876 } 4877 4878 qeth_create_qib_param_field(card, qib_param_field); 4879 qeth_create_qib_param_field_blkt(card, qib_param_field); 4880 4881 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4882 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4883 GFP_KERNEL); 4884 if (!in_sbal_ptrs) { 4885 rc = -ENOMEM; 4886 goto out_free_qib_param; 4887 } 4888 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4889 in_sbal_ptrs[i] = (struct qdio_buffer *) 4890 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4891 } 4892 4893 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4894 GFP_KERNEL); 4895 if (!queue_start_poll) { 4896 rc = -ENOMEM; 4897 goto out_free_in_sbals; 4898 } 4899 for (i = 0; i < card->qdio.no_in_queues; ++i) 4900 queue_start_poll[i] = card->discipline->start_poll; 4901 4902 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4903 4904 out_sbal_ptrs = 4905 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 4906 sizeof(void *), GFP_KERNEL); 4907 if (!out_sbal_ptrs) { 4908 rc = -ENOMEM; 4909 goto out_free_queue_start_poll; 4910 } 4911 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4912 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4913 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4914 card->qdio.out_qs[i]->bufs[j]->buffer); 4915 } 4916 4917 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4918 init_data.cdev = CARD_DDEV(card); 4919 init_data.q_format = qeth_get_qdio_q_format(card); 4920 init_data.qib_param_field_format = 0; 4921 init_data.qib_param_field = qib_param_field; 4922 init_data.no_input_qs = card->qdio.no_in_queues; 4923 init_data.no_output_qs = card->qdio.no_out_queues; 4924 init_data.input_handler = card->discipline->input_handler; 4925 init_data.output_handler = card->discipline->output_handler; 4926 init_data.queue_start_poll_array = queue_start_poll; 4927 init_data.int_parm = (unsigned long) card; 4928 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4929 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4930 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4931 init_data.scan_threshold = 4932 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 4933 4934 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4935 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4936 rc = qdio_allocate(&init_data); 4937 if (rc) { 4938 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4939 goto out; 4940 } 4941 rc = qdio_establish(&init_data); 4942 if (rc) { 4943 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4944 qdio_free(CARD_DDEV(card)); 4945 } 4946 } 4947 4948 switch (card->options.cq) { 4949 case QETH_CQ_ENABLED: 4950 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4951 break; 4952 case QETH_CQ_DISABLED: 4953 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4954 break; 4955 default: 4956 break; 4957 } 4958 out: 4959 kfree(out_sbal_ptrs); 4960 out_free_queue_start_poll: 4961 kfree(queue_start_poll); 4962 out_free_in_sbals: 4963 kfree(in_sbal_ptrs); 4964 out_free_qib_param: 4965 kfree(qib_param_field); 4966 out_free_nothing: 4967 return rc; 4968 } 4969 4970 static void qeth_core_free_card(struct qeth_card *card) 4971 { 4972 4973 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 4974 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 4975 qeth_clean_channel(&card->read); 4976 qeth_clean_channel(&card->write); 4977 if (card->dev) 4978 free_netdev(card->dev); 4979 qeth_free_qdio_buffers(card); 4980 unregister_service_level(&card->qeth_service_level); 4981 kfree(card); 4982 } 4983 4984 void qeth_trace_features(struct qeth_card *card) 4985 { 4986 QETH_CARD_TEXT(card, 2, "features"); 4987 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 4988 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 4989 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 4990 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 4991 sizeof(card->info.diagass_support)); 4992 } 4993 EXPORT_SYMBOL_GPL(qeth_trace_features); 4994 4995 static struct ccw_device_id qeth_ids[] = { 4996 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 4997 .driver_info = QETH_CARD_TYPE_OSD}, 4998 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 4999 .driver_info = QETH_CARD_TYPE_IQD}, 5000 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5001 .driver_info = QETH_CARD_TYPE_OSN}, 5002 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5003 .driver_info = QETH_CARD_TYPE_OSM}, 5004 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5005 .driver_info = QETH_CARD_TYPE_OSX}, 5006 {}, 5007 }; 5008 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5009 5010 static struct ccw_driver qeth_ccw_driver = { 5011 .driver = { 5012 .owner = THIS_MODULE, 5013 .name = "qeth", 5014 }, 5015 .ids = qeth_ids, 5016 .probe = ccwgroup_probe_ccwdev, 5017 .remove = ccwgroup_remove_ccwdev, 5018 }; 5019 5020 int qeth_core_hardsetup_card(struct qeth_card *card) 5021 { 5022 int retries = 3; 5023 int rc; 5024 5025 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5026 atomic_set(&card->force_alloc_skb, 0); 5027 qeth_update_from_chp_desc(card); 5028 retry: 5029 if (retries < 3) 5030 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5031 dev_name(&card->gdev->dev)); 5032 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5033 ccw_device_set_offline(CARD_DDEV(card)); 5034 ccw_device_set_offline(CARD_WDEV(card)); 5035 ccw_device_set_offline(CARD_RDEV(card)); 5036 qdio_free(CARD_DDEV(card)); 5037 rc = ccw_device_set_online(CARD_RDEV(card)); 5038 if (rc) 5039 goto retriable; 5040 rc = ccw_device_set_online(CARD_WDEV(card)); 5041 if (rc) 5042 goto retriable; 5043 rc = ccw_device_set_online(CARD_DDEV(card)); 5044 if (rc) 5045 goto retriable; 5046 retriable: 5047 if (rc == -ERESTARTSYS) { 5048 QETH_DBF_TEXT(SETUP, 2, "break1"); 5049 return rc; 5050 } else if (rc) { 5051 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5052 if (--retries < 0) 5053 goto out; 5054 else 5055 goto retry; 5056 } 5057 qeth_determine_capabilities(card); 5058 qeth_init_tokens(card); 5059 qeth_init_func_level(card); 5060 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5061 if (rc == -ERESTARTSYS) { 5062 QETH_DBF_TEXT(SETUP, 2, "break2"); 5063 return rc; 5064 } else if (rc) { 5065 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5066 if (--retries < 0) 5067 goto out; 5068 else 5069 goto retry; 5070 } 5071 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5072 if (rc == -ERESTARTSYS) { 5073 QETH_DBF_TEXT(SETUP, 2, "break3"); 5074 return rc; 5075 } else if (rc) { 5076 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5077 if (--retries < 0) 5078 goto out; 5079 else 5080 goto retry; 5081 } 5082 card->read_or_write_problem = 0; 5083 rc = qeth_mpc_initialize(card); 5084 if (rc) { 5085 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5086 goto out; 5087 } 5088 5089 rc = qeth_send_startlan(card); 5090 if (rc) { 5091 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5092 if (rc == IPA_RC_LAN_OFFLINE) { 5093 dev_warn(&card->gdev->dev, 5094 "The LAN is offline\n"); 5095 card->lan_online = 0; 5096 } else { 5097 rc = -ENODEV; 5098 goto out; 5099 } 5100 } else 5101 card->lan_online = 1; 5102 5103 card->options.ipa4.supported_funcs = 0; 5104 card->options.ipa6.supported_funcs = 0; 5105 card->options.adp.supported_funcs = 0; 5106 card->options.sbp.supported_funcs = 0; 5107 card->info.diagass_support = 0; 5108 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5109 if (rc == -ENOMEM) 5110 goto out; 5111 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5112 rc = qeth_query_setadapterparms(card); 5113 if (rc < 0) { 5114 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5115 goto out; 5116 } 5117 } 5118 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5119 rc = qeth_query_setdiagass(card); 5120 if (rc < 0) { 5121 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5122 goto out; 5123 } 5124 } 5125 return 0; 5126 out: 5127 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5128 "an error on the device\n"); 5129 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5130 dev_name(&card->gdev->dev), rc); 5131 return rc; 5132 } 5133 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5134 5135 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer, 5136 struct qdio_buffer_element *element, 5137 struct sk_buff **pskb, int offset, int *pfrag, int data_len) 5138 { 5139 struct page *page = virt_to_page(element->addr); 5140 if (*pskb == NULL) { 5141 if (qethbuffer->rx_skb) { 5142 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */ 5143 *pskb = qethbuffer->rx_skb; 5144 qethbuffer->rx_skb = NULL; 5145 } else { 5146 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 5147 if (!(*pskb)) 5148 return -ENOMEM; 5149 } 5150 5151 skb_reserve(*pskb, ETH_HLEN); 5152 if (data_len <= QETH_RX_PULL_LEN) { 5153 memcpy(skb_put(*pskb, data_len), element->addr + offset, 5154 data_len); 5155 } else { 5156 get_page(page); 5157 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN), 5158 element->addr + offset, QETH_RX_PULL_LEN); 5159 skb_fill_page_desc(*pskb, *pfrag, page, 5160 offset + QETH_RX_PULL_LEN, 5161 data_len - QETH_RX_PULL_LEN); 5162 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN; 5163 (*pskb)->len += data_len - QETH_RX_PULL_LEN; 5164 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN; 5165 (*pfrag)++; 5166 } 5167 } else { 5168 get_page(page); 5169 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len); 5170 (*pskb)->data_len += data_len; 5171 (*pskb)->len += data_len; 5172 (*pskb)->truesize += data_len; 5173 (*pfrag)++; 5174 } 5175 5176 5177 return 0; 5178 } 5179 5180 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5181 { 5182 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5183 } 5184 5185 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5186 struct qeth_qdio_buffer *qethbuffer, 5187 struct qdio_buffer_element **__element, int *__offset, 5188 struct qeth_hdr **hdr) 5189 { 5190 struct qdio_buffer_element *element = *__element; 5191 struct qdio_buffer *buffer = qethbuffer->buffer; 5192 int offset = *__offset; 5193 struct sk_buff *skb = NULL; 5194 int skb_len = 0; 5195 void *data_ptr; 5196 int data_len; 5197 int headroom = 0; 5198 int use_rx_sg = 0; 5199 int frag = 0; 5200 5201 /* qeth_hdr must not cross element boundaries */ 5202 if (element->length < offset + sizeof(struct qeth_hdr)) { 5203 if (qeth_is_last_sbale(element)) 5204 return NULL; 5205 element++; 5206 offset = 0; 5207 if (element->length < sizeof(struct qeth_hdr)) 5208 return NULL; 5209 } 5210 *hdr = element->addr + offset; 5211 5212 offset += sizeof(struct qeth_hdr); 5213 switch ((*hdr)->hdr.l2.id) { 5214 case QETH_HEADER_TYPE_LAYER2: 5215 skb_len = (*hdr)->hdr.l2.pkt_length; 5216 break; 5217 case QETH_HEADER_TYPE_LAYER3: 5218 skb_len = (*hdr)->hdr.l3.length; 5219 headroom = ETH_HLEN; 5220 break; 5221 case QETH_HEADER_TYPE_OSN: 5222 skb_len = (*hdr)->hdr.osn.pdu_length; 5223 headroom = sizeof(struct qeth_hdr); 5224 break; 5225 default: 5226 break; 5227 } 5228 5229 if (!skb_len) 5230 return NULL; 5231 5232 if (((skb_len >= card->options.rx_sg_cb) && 5233 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5234 (!atomic_read(&card->force_alloc_skb))) || 5235 (card->options.cq == QETH_CQ_ENABLED)) { 5236 use_rx_sg = 1; 5237 } else { 5238 skb = dev_alloc_skb(skb_len + headroom); 5239 if (!skb) 5240 goto no_mem; 5241 if (headroom) 5242 skb_reserve(skb, headroom); 5243 } 5244 5245 data_ptr = element->addr + offset; 5246 while (skb_len) { 5247 data_len = min(skb_len, (int)(element->length - offset)); 5248 if (data_len) { 5249 if (use_rx_sg) { 5250 if (qeth_create_skb_frag(qethbuffer, element, 5251 &skb, offset, &frag, data_len)) 5252 goto no_mem; 5253 } else { 5254 memcpy(skb_put(skb, data_len), data_ptr, 5255 data_len); 5256 } 5257 } 5258 skb_len -= data_len; 5259 if (skb_len) { 5260 if (qeth_is_last_sbale(element)) { 5261 QETH_CARD_TEXT(card, 4, "unexeob"); 5262 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5263 dev_kfree_skb_any(skb); 5264 card->stats.rx_errors++; 5265 return NULL; 5266 } 5267 element++; 5268 offset = 0; 5269 data_ptr = element->addr; 5270 } else { 5271 offset += data_len; 5272 } 5273 } 5274 *__element = element; 5275 *__offset = offset; 5276 if (use_rx_sg && card->options.performance_stats) { 5277 card->perf_stats.sg_skbs_rx++; 5278 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5279 } 5280 return skb; 5281 no_mem: 5282 if (net_ratelimit()) { 5283 QETH_CARD_TEXT(card, 2, "noskbmem"); 5284 } 5285 card->stats.rx_dropped++; 5286 return NULL; 5287 } 5288 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5289 5290 int qeth_setassparms_cb(struct qeth_card *card, 5291 struct qeth_reply *reply, unsigned long data) 5292 { 5293 struct qeth_ipa_cmd *cmd; 5294 5295 QETH_CARD_TEXT(card, 4, "defadpcb"); 5296 5297 cmd = (struct qeth_ipa_cmd *) data; 5298 if (cmd->hdr.return_code == 0) { 5299 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5300 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5301 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5302 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5303 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5304 } 5305 return 0; 5306 } 5307 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5308 5309 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5310 enum qeth_ipa_funcs ipa_func, 5311 __u16 cmd_code, __u16 len, 5312 enum qeth_prot_versions prot) 5313 { 5314 struct qeth_cmd_buffer *iob; 5315 struct qeth_ipa_cmd *cmd; 5316 5317 QETH_CARD_TEXT(card, 4, "getasscm"); 5318 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5319 5320 if (iob) { 5321 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5322 cmd->data.setassparms.hdr.assist_no = ipa_func; 5323 cmd->data.setassparms.hdr.length = 8 + len; 5324 cmd->data.setassparms.hdr.command_code = cmd_code; 5325 cmd->data.setassparms.hdr.return_code = 0; 5326 cmd->data.setassparms.hdr.seq_no = 0; 5327 } 5328 5329 return iob; 5330 } 5331 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5332 5333 int qeth_send_setassparms(struct qeth_card *card, 5334 struct qeth_cmd_buffer *iob, __u16 len, long data, 5335 int (*reply_cb)(struct qeth_card *, 5336 struct qeth_reply *, unsigned long), 5337 void *reply_param) 5338 { 5339 int rc; 5340 struct qeth_ipa_cmd *cmd; 5341 5342 QETH_CARD_TEXT(card, 4, "sendassp"); 5343 5344 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5345 if (len <= sizeof(__u32)) 5346 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5347 else /* (len > sizeof(__u32)) */ 5348 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5349 5350 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5351 return rc; 5352 } 5353 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5354 5355 int qeth_send_simple_setassparms(struct qeth_card *card, 5356 enum qeth_ipa_funcs ipa_func, 5357 __u16 cmd_code, long data) 5358 { 5359 int rc; 5360 int length = 0; 5361 struct qeth_cmd_buffer *iob; 5362 5363 QETH_CARD_TEXT(card, 4, "simassp4"); 5364 if (data) 5365 length = sizeof(__u32); 5366 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5367 length, QETH_PROT_IPV4); 5368 if (!iob) 5369 return -ENOMEM; 5370 rc = qeth_send_setassparms(card, iob, length, data, 5371 qeth_setassparms_cb, NULL); 5372 return rc; 5373 } 5374 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5375 5376 static void qeth_unregister_dbf_views(void) 5377 { 5378 int x; 5379 for (x = 0; x < QETH_DBF_INFOS; x++) { 5380 debug_unregister(qeth_dbf[x].id); 5381 qeth_dbf[x].id = NULL; 5382 } 5383 } 5384 5385 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5386 { 5387 char dbf_txt_buf[32]; 5388 va_list args; 5389 5390 if (!debug_level_enabled(id, level)) 5391 return; 5392 va_start(args, fmt); 5393 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5394 va_end(args); 5395 debug_text_event(id, level, dbf_txt_buf); 5396 } 5397 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5398 5399 static int qeth_register_dbf_views(void) 5400 { 5401 int ret; 5402 int x; 5403 5404 for (x = 0; x < QETH_DBF_INFOS; x++) { 5405 /* register the areas */ 5406 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5407 qeth_dbf[x].pages, 5408 qeth_dbf[x].areas, 5409 qeth_dbf[x].len); 5410 if (qeth_dbf[x].id == NULL) { 5411 qeth_unregister_dbf_views(); 5412 return -ENOMEM; 5413 } 5414 5415 /* register a view */ 5416 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5417 if (ret) { 5418 qeth_unregister_dbf_views(); 5419 return ret; 5420 } 5421 5422 /* set a passing level */ 5423 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5424 } 5425 5426 return 0; 5427 } 5428 5429 int qeth_core_load_discipline(struct qeth_card *card, 5430 enum qeth_discipline_id discipline) 5431 { 5432 int rc = 0; 5433 mutex_lock(&qeth_mod_mutex); 5434 switch (discipline) { 5435 case QETH_DISCIPLINE_LAYER3: 5436 card->discipline = try_then_request_module( 5437 symbol_get(qeth_l3_discipline), "qeth_l3"); 5438 break; 5439 case QETH_DISCIPLINE_LAYER2: 5440 card->discipline = try_then_request_module( 5441 symbol_get(qeth_l2_discipline), "qeth_l2"); 5442 break; 5443 } 5444 if (!card->discipline) { 5445 dev_err(&card->gdev->dev, "There is no kernel module to " 5446 "support discipline %d\n", discipline); 5447 rc = -EINVAL; 5448 } 5449 mutex_unlock(&qeth_mod_mutex); 5450 return rc; 5451 } 5452 5453 void qeth_core_free_discipline(struct qeth_card *card) 5454 { 5455 if (card->options.layer2) 5456 symbol_put(qeth_l2_discipline); 5457 else 5458 symbol_put(qeth_l3_discipline); 5459 card->discipline = NULL; 5460 } 5461 5462 static const struct device_type qeth_generic_devtype = { 5463 .name = "qeth_generic", 5464 .groups = qeth_generic_attr_groups, 5465 }; 5466 static const struct device_type qeth_osn_devtype = { 5467 .name = "qeth_osn", 5468 .groups = qeth_osn_attr_groups, 5469 }; 5470 5471 #define DBF_NAME_LEN 20 5472 5473 struct qeth_dbf_entry { 5474 char dbf_name[DBF_NAME_LEN]; 5475 debug_info_t *dbf_info; 5476 struct list_head dbf_list; 5477 }; 5478 5479 static LIST_HEAD(qeth_dbf_list); 5480 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5481 5482 static debug_info_t *qeth_get_dbf_entry(char *name) 5483 { 5484 struct qeth_dbf_entry *entry; 5485 debug_info_t *rc = NULL; 5486 5487 mutex_lock(&qeth_dbf_list_mutex); 5488 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5489 if (strcmp(entry->dbf_name, name) == 0) { 5490 rc = entry->dbf_info; 5491 break; 5492 } 5493 } 5494 mutex_unlock(&qeth_dbf_list_mutex); 5495 return rc; 5496 } 5497 5498 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5499 { 5500 struct qeth_dbf_entry *new_entry; 5501 5502 card->debug = debug_register(name, 2, 1, 8); 5503 if (!card->debug) { 5504 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5505 goto err; 5506 } 5507 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5508 goto err_dbg; 5509 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5510 if (!new_entry) 5511 goto err_dbg; 5512 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5513 new_entry->dbf_info = card->debug; 5514 mutex_lock(&qeth_dbf_list_mutex); 5515 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5516 mutex_unlock(&qeth_dbf_list_mutex); 5517 5518 return 0; 5519 5520 err_dbg: 5521 debug_unregister(card->debug); 5522 err: 5523 return -ENOMEM; 5524 } 5525 5526 static void qeth_clear_dbf_list(void) 5527 { 5528 struct qeth_dbf_entry *entry, *tmp; 5529 5530 mutex_lock(&qeth_dbf_list_mutex); 5531 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5532 list_del(&entry->dbf_list); 5533 debug_unregister(entry->dbf_info); 5534 kfree(entry); 5535 } 5536 mutex_unlock(&qeth_dbf_list_mutex); 5537 } 5538 5539 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5540 { 5541 struct qeth_card *card; 5542 struct device *dev; 5543 int rc; 5544 unsigned long flags; 5545 char dbf_name[DBF_NAME_LEN]; 5546 5547 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5548 5549 dev = &gdev->dev; 5550 if (!get_device(dev)) 5551 return -ENODEV; 5552 5553 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5554 5555 card = qeth_alloc_card(); 5556 if (!card) { 5557 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5558 rc = -ENOMEM; 5559 goto err_dev; 5560 } 5561 5562 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5563 dev_name(&gdev->dev)); 5564 card->debug = qeth_get_dbf_entry(dbf_name); 5565 if (!card->debug) { 5566 rc = qeth_add_dbf_entry(card, dbf_name); 5567 if (rc) 5568 goto err_card; 5569 } 5570 5571 card->read.ccwdev = gdev->cdev[0]; 5572 card->write.ccwdev = gdev->cdev[1]; 5573 card->data.ccwdev = gdev->cdev[2]; 5574 dev_set_drvdata(&gdev->dev, card); 5575 card->gdev = gdev; 5576 gdev->cdev[0]->handler = qeth_irq; 5577 gdev->cdev[1]->handler = qeth_irq; 5578 gdev->cdev[2]->handler = qeth_irq; 5579 5580 rc = qeth_determine_card_type(card); 5581 if (rc) { 5582 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5583 goto err_card; 5584 } 5585 rc = qeth_setup_card(card); 5586 if (rc) { 5587 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5588 goto err_card; 5589 } 5590 5591 if (card->info.type == QETH_CARD_TYPE_OSN) 5592 gdev->dev.type = &qeth_osn_devtype; 5593 else 5594 gdev->dev.type = &qeth_generic_devtype; 5595 5596 switch (card->info.type) { 5597 case QETH_CARD_TYPE_OSN: 5598 case QETH_CARD_TYPE_OSM: 5599 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2); 5600 if (rc) 5601 goto err_card; 5602 rc = card->discipline->setup(card->gdev); 5603 if (rc) 5604 goto err_disc; 5605 case QETH_CARD_TYPE_OSD: 5606 case QETH_CARD_TYPE_OSX: 5607 default: 5608 break; 5609 } 5610 5611 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5612 list_add_tail(&card->list, &qeth_core_card_list.list); 5613 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5614 5615 qeth_determine_capabilities(card); 5616 return 0; 5617 5618 err_disc: 5619 qeth_core_free_discipline(card); 5620 err_card: 5621 qeth_core_free_card(card); 5622 err_dev: 5623 put_device(dev); 5624 return rc; 5625 } 5626 5627 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5628 { 5629 unsigned long flags; 5630 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5631 5632 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5633 5634 if (card->discipline) { 5635 card->discipline->remove(gdev); 5636 qeth_core_free_discipline(card); 5637 } 5638 5639 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5640 list_del(&card->list); 5641 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5642 qeth_core_free_card(card); 5643 dev_set_drvdata(&gdev->dev, NULL); 5644 put_device(&gdev->dev); 5645 return; 5646 } 5647 5648 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5649 { 5650 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5651 int rc = 0; 5652 int def_discipline; 5653 5654 if (!card->discipline) { 5655 if (card->info.type == QETH_CARD_TYPE_IQD) 5656 def_discipline = QETH_DISCIPLINE_LAYER3; 5657 else 5658 def_discipline = QETH_DISCIPLINE_LAYER2; 5659 rc = qeth_core_load_discipline(card, def_discipline); 5660 if (rc) 5661 goto err; 5662 rc = card->discipline->setup(card->gdev); 5663 if (rc) 5664 goto err; 5665 } 5666 rc = card->discipline->set_online(gdev); 5667 err: 5668 return rc; 5669 } 5670 5671 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5672 { 5673 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5674 return card->discipline->set_offline(gdev); 5675 } 5676 5677 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5678 { 5679 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5680 if (card->discipline && card->discipline->shutdown) 5681 card->discipline->shutdown(gdev); 5682 } 5683 5684 static int qeth_core_prepare(struct ccwgroup_device *gdev) 5685 { 5686 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5687 if (card->discipline && card->discipline->prepare) 5688 return card->discipline->prepare(gdev); 5689 return 0; 5690 } 5691 5692 static void qeth_core_complete(struct ccwgroup_device *gdev) 5693 { 5694 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5695 if (card->discipline && card->discipline->complete) 5696 card->discipline->complete(gdev); 5697 } 5698 5699 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5700 { 5701 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5702 if (card->discipline && card->discipline->freeze) 5703 return card->discipline->freeze(gdev); 5704 return 0; 5705 } 5706 5707 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5708 { 5709 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5710 if (card->discipline && card->discipline->thaw) 5711 return card->discipline->thaw(gdev); 5712 return 0; 5713 } 5714 5715 static int qeth_core_restore(struct ccwgroup_device *gdev) 5716 { 5717 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5718 if (card->discipline && card->discipline->restore) 5719 return card->discipline->restore(gdev); 5720 return 0; 5721 } 5722 5723 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5724 .driver = { 5725 .owner = THIS_MODULE, 5726 .name = "qeth", 5727 }, 5728 .setup = qeth_core_probe_device, 5729 .remove = qeth_core_remove_device, 5730 .set_online = qeth_core_set_online, 5731 .set_offline = qeth_core_set_offline, 5732 .shutdown = qeth_core_shutdown, 5733 .prepare = qeth_core_prepare, 5734 .complete = qeth_core_complete, 5735 .freeze = qeth_core_freeze, 5736 .thaw = qeth_core_thaw, 5737 .restore = qeth_core_restore, 5738 }; 5739 5740 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv, 5741 const char *buf, size_t count) 5742 { 5743 int err; 5744 5745 err = ccwgroup_create_dev(qeth_core_root_dev, 5746 &qeth_core_ccwgroup_driver, 3, buf); 5747 5748 return err ? err : count; 5749 } 5750 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store); 5751 5752 static struct attribute *qeth_drv_attrs[] = { 5753 &driver_attr_group.attr, 5754 NULL, 5755 }; 5756 static struct attribute_group qeth_drv_attr_group = { 5757 .attrs = qeth_drv_attrs, 5758 }; 5759 static const struct attribute_group *qeth_drv_attr_groups[] = { 5760 &qeth_drv_attr_group, 5761 NULL, 5762 }; 5763 5764 static struct { 5765 const char str[ETH_GSTRING_LEN]; 5766 } qeth_ethtool_stats_keys[] = { 5767 /* 0 */{"rx skbs"}, 5768 {"rx buffers"}, 5769 {"tx skbs"}, 5770 {"tx buffers"}, 5771 {"tx skbs no packing"}, 5772 {"tx buffers no packing"}, 5773 {"tx skbs packing"}, 5774 {"tx buffers packing"}, 5775 {"tx sg skbs"}, 5776 {"tx sg frags"}, 5777 /* 10 */{"rx sg skbs"}, 5778 {"rx sg frags"}, 5779 {"rx sg page allocs"}, 5780 {"tx large kbytes"}, 5781 {"tx large count"}, 5782 {"tx pk state ch n->p"}, 5783 {"tx pk state ch p->n"}, 5784 {"tx pk watermark low"}, 5785 {"tx pk watermark high"}, 5786 {"queue 0 buffer usage"}, 5787 /* 20 */{"queue 1 buffer usage"}, 5788 {"queue 2 buffer usage"}, 5789 {"queue 3 buffer usage"}, 5790 {"rx poll time"}, 5791 {"rx poll count"}, 5792 {"rx do_QDIO time"}, 5793 {"rx do_QDIO count"}, 5794 {"tx handler time"}, 5795 {"tx handler count"}, 5796 {"tx time"}, 5797 /* 30 */{"tx count"}, 5798 {"tx do_QDIO time"}, 5799 {"tx do_QDIO count"}, 5800 {"tx csum"}, 5801 {"tx lin"}, 5802 {"tx linfail"}, 5803 {"cq handler count"}, 5804 {"cq handler time"} 5805 }; 5806 5807 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 5808 { 5809 switch (stringset) { 5810 case ETH_SS_STATS: 5811 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 5812 default: 5813 return -EINVAL; 5814 } 5815 } 5816 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 5817 5818 void qeth_core_get_ethtool_stats(struct net_device *dev, 5819 struct ethtool_stats *stats, u64 *data) 5820 { 5821 struct qeth_card *card = dev->ml_priv; 5822 data[0] = card->stats.rx_packets - 5823 card->perf_stats.initial_rx_packets; 5824 data[1] = card->perf_stats.bufs_rec; 5825 data[2] = card->stats.tx_packets - 5826 card->perf_stats.initial_tx_packets; 5827 data[3] = card->perf_stats.bufs_sent; 5828 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 5829 - card->perf_stats.skbs_sent_pack; 5830 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 5831 data[6] = card->perf_stats.skbs_sent_pack; 5832 data[7] = card->perf_stats.bufs_sent_pack; 5833 data[8] = card->perf_stats.sg_skbs_sent; 5834 data[9] = card->perf_stats.sg_frags_sent; 5835 data[10] = card->perf_stats.sg_skbs_rx; 5836 data[11] = card->perf_stats.sg_frags_rx; 5837 data[12] = card->perf_stats.sg_alloc_page_rx; 5838 data[13] = (card->perf_stats.large_send_bytes >> 10); 5839 data[14] = card->perf_stats.large_send_cnt; 5840 data[15] = card->perf_stats.sc_dp_p; 5841 data[16] = card->perf_stats.sc_p_dp; 5842 data[17] = QETH_LOW_WATERMARK_PACK; 5843 data[18] = QETH_HIGH_WATERMARK_PACK; 5844 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 5845 data[20] = (card->qdio.no_out_queues > 1) ? 5846 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 5847 data[21] = (card->qdio.no_out_queues > 2) ? 5848 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 5849 data[22] = (card->qdio.no_out_queues > 3) ? 5850 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 5851 data[23] = card->perf_stats.inbound_time; 5852 data[24] = card->perf_stats.inbound_cnt; 5853 data[25] = card->perf_stats.inbound_do_qdio_time; 5854 data[26] = card->perf_stats.inbound_do_qdio_cnt; 5855 data[27] = card->perf_stats.outbound_handler_time; 5856 data[28] = card->perf_stats.outbound_handler_cnt; 5857 data[29] = card->perf_stats.outbound_time; 5858 data[30] = card->perf_stats.outbound_cnt; 5859 data[31] = card->perf_stats.outbound_do_qdio_time; 5860 data[32] = card->perf_stats.outbound_do_qdio_cnt; 5861 data[33] = card->perf_stats.tx_csum; 5862 data[34] = card->perf_stats.tx_lin; 5863 data[35] = card->perf_stats.tx_linfail; 5864 data[36] = card->perf_stats.cq_cnt; 5865 data[37] = card->perf_stats.cq_time; 5866 } 5867 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 5868 5869 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 5870 { 5871 switch (stringset) { 5872 case ETH_SS_STATS: 5873 memcpy(data, &qeth_ethtool_stats_keys, 5874 sizeof(qeth_ethtool_stats_keys)); 5875 break; 5876 default: 5877 WARN_ON(1); 5878 break; 5879 } 5880 } 5881 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 5882 5883 void qeth_core_get_drvinfo(struct net_device *dev, 5884 struct ethtool_drvinfo *info) 5885 { 5886 struct qeth_card *card = dev->ml_priv; 5887 5888 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 5889 sizeof(info->driver)); 5890 strlcpy(info->version, "1.0", sizeof(info->version)); 5891 strlcpy(info->fw_version, card->info.mcl_level, 5892 sizeof(info->fw_version)); 5893 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 5894 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 5895 } 5896 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 5897 5898 /* Helper function to fill 'advertizing' and 'supported' which are the same. */ 5899 /* Autoneg and full-duplex are supported and advertized uncondionally. */ 5900 /* Always advertize and support all speeds up to specified, and only one */ 5901 /* specified port type. */ 5902 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd, 5903 int maxspeed, int porttype) 5904 { 5905 int port_sup, port_adv, spd_sup, spd_adv; 5906 5907 switch (porttype) { 5908 case PORT_TP: 5909 port_sup = SUPPORTED_TP; 5910 port_adv = ADVERTISED_TP; 5911 break; 5912 case PORT_FIBRE: 5913 port_sup = SUPPORTED_FIBRE; 5914 port_adv = ADVERTISED_FIBRE; 5915 break; 5916 default: 5917 port_sup = SUPPORTED_TP; 5918 port_adv = ADVERTISED_TP; 5919 WARN_ON_ONCE(1); 5920 } 5921 5922 /* "Fallthrough" case'es ordered from high to low result in setting */ 5923 /* flags cumulatively, starting from the specified speed and down to */ 5924 /* the lowest possible. */ 5925 spd_sup = 0; 5926 spd_adv = 0; 5927 switch (maxspeed) { 5928 case SPEED_10000: 5929 spd_sup |= SUPPORTED_10000baseT_Full; 5930 spd_adv |= ADVERTISED_10000baseT_Full; 5931 case SPEED_1000: 5932 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; 5933 spd_adv |= ADVERTISED_1000baseT_Half | 5934 ADVERTISED_1000baseT_Full; 5935 case SPEED_100: 5936 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; 5937 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; 5938 case SPEED_10: 5939 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 5940 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; 5941 break; 5942 default: 5943 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 5944 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; 5945 WARN_ON_ONCE(1); 5946 } 5947 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv; 5948 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup; 5949 } 5950 5951 int qeth_core_ethtool_get_settings(struct net_device *netdev, 5952 struct ethtool_cmd *ecmd) 5953 { 5954 struct qeth_card *card = netdev->ml_priv; 5955 enum qeth_link_types link_type; 5956 struct carrier_info carrier_info; 5957 int rc; 5958 u32 speed; 5959 5960 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 5961 link_type = QETH_LINK_TYPE_10GBIT_ETH; 5962 else 5963 link_type = card->info.link_type; 5964 5965 ecmd->transceiver = XCVR_INTERNAL; 5966 ecmd->duplex = DUPLEX_FULL; 5967 ecmd->autoneg = AUTONEG_ENABLE; 5968 5969 switch (link_type) { 5970 case QETH_LINK_TYPE_FAST_ETH: 5971 case QETH_LINK_TYPE_LANE_ETH100: 5972 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP); 5973 speed = SPEED_100; 5974 ecmd->port = PORT_TP; 5975 break; 5976 5977 case QETH_LINK_TYPE_GBIT_ETH: 5978 case QETH_LINK_TYPE_LANE_ETH1000: 5979 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE); 5980 speed = SPEED_1000; 5981 ecmd->port = PORT_FIBRE; 5982 break; 5983 5984 case QETH_LINK_TYPE_10GBIT_ETH: 5985 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE); 5986 speed = SPEED_10000; 5987 ecmd->port = PORT_FIBRE; 5988 break; 5989 5990 default: 5991 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP); 5992 speed = SPEED_10; 5993 ecmd->port = PORT_TP; 5994 } 5995 ethtool_cmd_speed_set(ecmd, speed); 5996 5997 /* Check if we can obtain more accurate information. */ 5998 /* If QUERY_CARD_INFO command is not supported or fails, */ 5999 /* just return the heuristics that was filled above. */ 6000 if (!qeth_card_hw_is_reachable(card)) 6001 return -ENODEV; 6002 rc = qeth_query_card_info(card, &carrier_info); 6003 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6004 return 0; 6005 if (rc) /* report error from the hardware operation */ 6006 return rc; 6007 /* on success, fill in the information got from the hardware */ 6008 6009 netdev_dbg(netdev, 6010 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6011 carrier_info.card_type, 6012 carrier_info.port_mode, 6013 carrier_info.port_speed); 6014 6015 /* Update attributes for which we've obtained more authoritative */ 6016 /* information, leave the rest the way they where filled above. */ 6017 switch (carrier_info.card_type) { 6018 case CARD_INFO_TYPE_1G_COPPER_A: 6019 case CARD_INFO_TYPE_1G_COPPER_B: 6020 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP); 6021 ecmd->port = PORT_TP; 6022 break; 6023 case CARD_INFO_TYPE_1G_FIBRE_A: 6024 case CARD_INFO_TYPE_1G_FIBRE_B: 6025 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE); 6026 ecmd->port = PORT_FIBRE; 6027 break; 6028 case CARD_INFO_TYPE_10G_FIBRE_A: 6029 case CARD_INFO_TYPE_10G_FIBRE_B: 6030 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE); 6031 ecmd->port = PORT_FIBRE; 6032 break; 6033 } 6034 6035 switch (carrier_info.port_mode) { 6036 case CARD_INFO_PORTM_FULLDUPLEX: 6037 ecmd->duplex = DUPLEX_FULL; 6038 break; 6039 case CARD_INFO_PORTM_HALFDUPLEX: 6040 ecmd->duplex = DUPLEX_HALF; 6041 break; 6042 } 6043 6044 switch (carrier_info.port_speed) { 6045 case CARD_INFO_PORTS_10M: 6046 speed = SPEED_10; 6047 break; 6048 case CARD_INFO_PORTS_100M: 6049 speed = SPEED_100; 6050 break; 6051 case CARD_INFO_PORTS_1G: 6052 speed = SPEED_1000; 6053 break; 6054 case CARD_INFO_PORTS_10G: 6055 speed = SPEED_10000; 6056 break; 6057 } 6058 ethtool_cmd_speed_set(ecmd, speed); 6059 6060 return 0; 6061 } 6062 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings); 6063 6064 /* Callback to handle checksum offload command reply from OSA card. 6065 * Verify that required features have been enabled on the card. 6066 * Return error in hdr->return_code as this value is checked by caller. 6067 * 6068 * Always returns zero to indicate no further messages from the OSA card. 6069 */ 6070 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6071 struct qeth_reply *reply, 6072 unsigned long data) 6073 { 6074 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6075 struct qeth_checksum_cmd *chksum_cb = 6076 (struct qeth_checksum_cmd *)reply->param; 6077 6078 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6079 if (cmd->hdr.return_code) 6080 return 0; 6081 6082 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6083 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6084 chksum_cb->supported = 6085 cmd->data.setassparms.data.chksum.supported; 6086 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6087 } 6088 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6089 chksum_cb->supported = 6090 cmd->data.setassparms.data.chksum.supported; 6091 chksum_cb->enabled = 6092 cmd->data.setassparms.data.chksum.enabled; 6093 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6094 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6095 } 6096 return 0; 6097 } 6098 6099 /* Send command to OSA card and check results. */ 6100 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6101 enum qeth_ipa_funcs ipa_func, 6102 __u16 cmd_code, long data, 6103 struct qeth_checksum_cmd *chksum_cb) 6104 { 6105 struct qeth_cmd_buffer *iob; 6106 int rc = -ENOMEM; 6107 6108 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6109 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6110 sizeof(__u32), QETH_PROT_IPV4); 6111 if (iob) 6112 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6113 qeth_ipa_checksum_run_cmd_cb, 6114 chksum_cb); 6115 return rc; 6116 } 6117 6118 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6119 { 6120 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR | 6121 QETH_IPA_CHECKSUM_UDP | 6122 QETH_IPA_CHECKSUM_TCP; 6123 struct qeth_checksum_cmd chksum_cb; 6124 int rc; 6125 6126 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6127 &chksum_cb); 6128 if (!rc) { 6129 if ((required_features & chksum_cb.supported) != 6130 required_features) 6131 rc = -EIO; 6132 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6133 cstype == IPA_INBOUND_CHECKSUM) 6134 dev_warn(&card->gdev->dev, 6135 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6136 QETH_CARD_IFNAME(card)); 6137 } 6138 if (rc) { 6139 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6140 dev_warn(&card->gdev->dev, 6141 "Starting HW checksumming for %s failed, using SW checksumming\n", 6142 QETH_CARD_IFNAME(card)); 6143 return rc; 6144 } 6145 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6146 chksum_cb.supported, &chksum_cb); 6147 if (!rc) { 6148 if ((required_features & chksum_cb.enabled) != 6149 required_features) 6150 rc = -EIO; 6151 } 6152 if (rc) { 6153 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6154 dev_warn(&card->gdev->dev, 6155 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6156 QETH_CARD_IFNAME(card)); 6157 return rc; 6158 } 6159 6160 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6161 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6162 return 0; 6163 } 6164 6165 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6166 { 6167 int rc = (on) ? qeth_send_checksum_on(card, cstype) 6168 : qeth_send_simple_setassparms(card, cstype, 6169 IPA_CMD_ASS_STOP, 0); 6170 return rc ? -EIO : 0; 6171 } 6172 6173 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6174 { 6175 int rc; 6176 6177 QETH_CARD_TEXT(card, 3, "sttso"); 6178 6179 if (on) { 6180 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6181 IPA_CMD_ASS_START, 0); 6182 if (rc) { 6183 dev_warn(&card->gdev->dev, 6184 "Starting outbound TCP segmentation offload for %s failed\n", 6185 QETH_CARD_IFNAME(card)); 6186 return -EIO; 6187 } 6188 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6189 } else { 6190 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6191 IPA_CMD_ASS_STOP, 0); 6192 } 6193 return rc; 6194 } 6195 6196 /* try to restore device features on a device after recovery */ 6197 int qeth_recover_features(struct net_device *dev) 6198 { 6199 struct qeth_card *card = dev->ml_priv; 6200 netdev_features_t recover = dev->features; 6201 6202 if (recover & NETIF_F_IP_CSUM) { 6203 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM)) 6204 recover ^= NETIF_F_IP_CSUM; 6205 } 6206 if (recover & NETIF_F_RXCSUM) { 6207 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM)) 6208 recover ^= NETIF_F_RXCSUM; 6209 } 6210 if (recover & NETIF_F_TSO) { 6211 if (qeth_set_ipa_tso(card, 1)) 6212 recover ^= NETIF_F_TSO; 6213 } 6214 6215 if (recover == dev->features) 6216 return 0; 6217 6218 dev_warn(&card->gdev->dev, 6219 "Device recovery failed to restore all offload features\n"); 6220 dev->features = recover; 6221 return -EIO; 6222 } 6223 EXPORT_SYMBOL_GPL(qeth_recover_features); 6224 6225 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6226 { 6227 struct qeth_card *card = dev->ml_priv; 6228 netdev_features_t changed = dev->features ^ features; 6229 int rc = 0; 6230 6231 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6232 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6233 6234 if ((changed & NETIF_F_IP_CSUM)) { 6235 rc = qeth_set_ipa_csum(card, 6236 features & NETIF_F_IP_CSUM ? 1 : 0, 6237 IPA_OUTBOUND_CHECKSUM); 6238 if (rc) 6239 changed ^= NETIF_F_IP_CSUM; 6240 } 6241 if ((changed & NETIF_F_RXCSUM)) { 6242 rc = qeth_set_ipa_csum(card, 6243 features & NETIF_F_RXCSUM ? 1 : 0, 6244 IPA_INBOUND_CHECKSUM); 6245 if (rc) 6246 changed ^= NETIF_F_RXCSUM; 6247 } 6248 if ((changed & NETIF_F_TSO)) { 6249 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6250 if (rc) 6251 changed ^= NETIF_F_TSO; 6252 } 6253 6254 /* everything changed successfully? */ 6255 if ((dev->features ^ features) == changed) 6256 return 0; 6257 /* something went wrong. save changed features and return error */ 6258 dev->features ^= changed; 6259 return -EIO; 6260 } 6261 EXPORT_SYMBOL_GPL(qeth_set_features); 6262 6263 netdev_features_t qeth_fix_features(struct net_device *dev, 6264 netdev_features_t features) 6265 { 6266 struct qeth_card *card = dev->ml_priv; 6267 6268 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6269 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6270 features &= ~NETIF_F_IP_CSUM; 6271 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6272 features &= ~NETIF_F_RXCSUM; 6273 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 6274 features &= ~NETIF_F_TSO; 6275 dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n", 6276 QETH_CARD_IFNAME(card)); 6277 } 6278 /* if the card isn't up, remove features that require hw changes */ 6279 if (card->state == CARD_STATE_DOWN || 6280 card->state == CARD_STATE_RECOVER) 6281 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 6282 NETIF_F_TSO); 6283 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6284 return features; 6285 } 6286 EXPORT_SYMBOL_GPL(qeth_fix_features); 6287 6288 static int __init qeth_core_init(void) 6289 { 6290 int rc; 6291 6292 pr_info("loading core functions\n"); 6293 INIT_LIST_HEAD(&qeth_core_card_list.list); 6294 INIT_LIST_HEAD(&qeth_dbf_list); 6295 rwlock_init(&qeth_core_card_list.rwlock); 6296 mutex_init(&qeth_mod_mutex); 6297 6298 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6299 6300 rc = qeth_register_dbf_views(); 6301 if (rc) 6302 goto out_err; 6303 qeth_core_root_dev = root_device_register("qeth"); 6304 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6305 if (rc) 6306 goto register_err; 6307 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6308 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6309 if (!qeth_core_header_cache) { 6310 rc = -ENOMEM; 6311 goto slab_err; 6312 } 6313 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6314 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6315 if (!qeth_qdio_outbuf_cache) { 6316 rc = -ENOMEM; 6317 goto cqslab_err; 6318 } 6319 rc = ccw_driver_register(&qeth_ccw_driver); 6320 if (rc) 6321 goto ccw_err; 6322 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6323 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6324 if (rc) 6325 goto ccwgroup_err; 6326 6327 return 0; 6328 6329 ccwgroup_err: 6330 ccw_driver_unregister(&qeth_ccw_driver); 6331 ccw_err: 6332 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6333 cqslab_err: 6334 kmem_cache_destroy(qeth_core_header_cache); 6335 slab_err: 6336 root_device_unregister(qeth_core_root_dev); 6337 register_err: 6338 qeth_unregister_dbf_views(); 6339 out_err: 6340 pr_err("Initializing the qeth device driver failed\n"); 6341 return rc; 6342 } 6343 6344 static void __exit qeth_core_exit(void) 6345 { 6346 qeth_clear_dbf_list(); 6347 destroy_workqueue(qeth_wq); 6348 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6349 ccw_driver_unregister(&qeth_ccw_driver); 6350 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6351 kmem_cache_destroy(qeth_core_header_cache); 6352 root_device_unregister(qeth_core_root_dev); 6353 qeth_unregister_dbf_views(); 6354 pr_info("core functions removed\n"); 6355 } 6356 6357 module_init(qeth_core_init); 6358 module_exit(qeth_core_exit); 6359 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6360 MODULE_DESCRIPTION("qeth core functions"); 6361 MODULE_LICENSE("GPL"); 6362