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 #include <asm/diag.h> 31 #include <asm/cio.h> 32 #include <asm/ccwdev.h> 33 34 #include "qeth_core.h" 35 36 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 37 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 38 /* N P A M L V H */ 39 [QETH_DBF_SETUP] = {"qeth_setup", 40 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 41 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 42 &debug_sprintf_view, NULL}, 43 [QETH_DBF_CTRL] = {"qeth_control", 44 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 45 }; 46 EXPORT_SYMBOL_GPL(qeth_dbf); 47 48 struct qeth_card_list_struct qeth_core_card_list; 49 EXPORT_SYMBOL_GPL(qeth_core_card_list); 50 struct kmem_cache *qeth_core_header_cache; 51 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 52 static struct kmem_cache *qeth_qdio_outbuf_cache; 53 54 static struct device *qeth_core_root_dev; 55 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY; 56 static struct lock_class_key qdio_out_skb_queue_key; 57 static struct mutex qeth_mod_mutex; 58 59 static void qeth_send_control_data_cb(struct qeth_channel *, 60 struct qeth_cmd_buffer *); 61 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 62 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 63 static void qeth_free_buffer_pool(struct qeth_card *); 64 static int qeth_qdio_establish(struct qeth_card *); 65 static void qeth_free_qdio_buffers(struct qeth_card *); 66 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 67 struct qeth_qdio_out_buffer *buf, 68 enum iucv_tx_notify notification); 69 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 70 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 71 struct qeth_qdio_out_buffer *buf, 72 enum qeth_qdio_buffer_states newbufstate); 73 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 74 75 struct workqueue_struct *qeth_wq; 76 EXPORT_SYMBOL_GPL(qeth_wq); 77 78 int qeth_card_hw_is_reachable(struct qeth_card *card) 79 { 80 return (card->state == CARD_STATE_SOFTSETUP) || 81 (card->state == CARD_STATE_UP); 82 } 83 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 84 85 static void qeth_close_dev_handler(struct work_struct *work) 86 { 87 struct qeth_card *card; 88 89 card = container_of(work, struct qeth_card, close_dev_work); 90 QETH_CARD_TEXT(card, 2, "cldevhdl"); 91 rtnl_lock(); 92 dev_close(card->dev); 93 rtnl_unlock(); 94 ccwgroup_set_offline(card->gdev); 95 } 96 97 void qeth_close_dev(struct qeth_card *card) 98 { 99 QETH_CARD_TEXT(card, 2, "cldevsubm"); 100 queue_work(qeth_wq, &card->close_dev_work); 101 } 102 EXPORT_SYMBOL_GPL(qeth_close_dev); 103 104 static inline const char *qeth_get_cardname(struct qeth_card *card) 105 { 106 if (card->info.guestlan) { 107 switch (card->info.type) { 108 case QETH_CARD_TYPE_OSD: 109 return " Virtual NIC QDIO"; 110 case QETH_CARD_TYPE_IQD: 111 return " Virtual NIC Hiper"; 112 case QETH_CARD_TYPE_OSM: 113 return " Virtual NIC QDIO - OSM"; 114 case QETH_CARD_TYPE_OSX: 115 return " Virtual NIC QDIO - OSX"; 116 default: 117 return " unknown"; 118 } 119 } else { 120 switch (card->info.type) { 121 case QETH_CARD_TYPE_OSD: 122 return " OSD Express"; 123 case QETH_CARD_TYPE_IQD: 124 return " HiperSockets"; 125 case QETH_CARD_TYPE_OSN: 126 return " OSN QDIO"; 127 case QETH_CARD_TYPE_OSM: 128 return " OSM QDIO"; 129 case QETH_CARD_TYPE_OSX: 130 return " OSX QDIO"; 131 default: 132 return " unknown"; 133 } 134 } 135 return " n/a"; 136 } 137 138 /* max length to be returned: 14 */ 139 const char *qeth_get_cardname_short(struct qeth_card *card) 140 { 141 if (card->info.guestlan) { 142 switch (card->info.type) { 143 case QETH_CARD_TYPE_OSD: 144 return "Virt.NIC QDIO"; 145 case QETH_CARD_TYPE_IQD: 146 return "Virt.NIC Hiper"; 147 case QETH_CARD_TYPE_OSM: 148 return "Virt.NIC OSM"; 149 case QETH_CARD_TYPE_OSX: 150 return "Virt.NIC OSX"; 151 default: 152 return "unknown"; 153 } 154 } else { 155 switch (card->info.type) { 156 case QETH_CARD_TYPE_OSD: 157 switch (card->info.link_type) { 158 case QETH_LINK_TYPE_FAST_ETH: 159 return "OSD_100"; 160 case QETH_LINK_TYPE_HSTR: 161 return "HSTR"; 162 case QETH_LINK_TYPE_GBIT_ETH: 163 return "OSD_1000"; 164 case QETH_LINK_TYPE_10GBIT_ETH: 165 return "OSD_10GIG"; 166 case QETH_LINK_TYPE_LANE_ETH100: 167 return "OSD_FE_LANE"; 168 case QETH_LINK_TYPE_LANE_TR: 169 return "OSD_TR_LANE"; 170 case QETH_LINK_TYPE_LANE_ETH1000: 171 return "OSD_GbE_LANE"; 172 case QETH_LINK_TYPE_LANE: 173 return "OSD_ATM_LANE"; 174 default: 175 return "OSD_Express"; 176 } 177 case QETH_CARD_TYPE_IQD: 178 return "HiperSockets"; 179 case QETH_CARD_TYPE_OSN: 180 return "OSN"; 181 case QETH_CARD_TYPE_OSM: 182 return "OSM_1000"; 183 case QETH_CARD_TYPE_OSX: 184 return "OSX_10GIG"; 185 default: 186 return "unknown"; 187 } 188 } 189 return "n/a"; 190 } 191 192 void qeth_set_recovery_task(struct qeth_card *card) 193 { 194 card->recovery_task = current; 195 } 196 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 197 198 void qeth_clear_recovery_task(struct qeth_card *card) 199 { 200 card->recovery_task = NULL; 201 } 202 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 203 204 static bool qeth_is_recovery_task(const struct qeth_card *card) 205 { 206 return card->recovery_task == current; 207 } 208 209 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 210 int clear_start_mask) 211 { 212 unsigned long flags; 213 214 spin_lock_irqsave(&card->thread_mask_lock, flags); 215 card->thread_allowed_mask = threads; 216 if (clear_start_mask) 217 card->thread_start_mask &= threads; 218 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 219 wake_up(&card->wait_q); 220 } 221 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 222 223 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 224 { 225 unsigned long flags; 226 int rc = 0; 227 228 spin_lock_irqsave(&card->thread_mask_lock, flags); 229 rc = (card->thread_running_mask & threads); 230 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 231 return rc; 232 } 233 EXPORT_SYMBOL_GPL(qeth_threads_running); 234 235 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 236 { 237 if (qeth_is_recovery_task(card)) 238 return 0; 239 return wait_event_interruptible(card->wait_q, 240 qeth_threads_running(card, threads) == 0); 241 } 242 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 243 244 void qeth_clear_working_pool_list(struct qeth_card *card) 245 { 246 struct qeth_buffer_pool_entry *pool_entry, *tmp; 247 248 QETH_CARD_TEXT(card, 5, "clwrklst"); 249 list_for_each_entry_safe(pool_entry, tmp, 250 &card->qdio.in_buf_pool.entry_list, list){ 251 list_del(&pool_entry->list); 252 } 253 } 254 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 255 256 static int qeth_alloc_buffer_pool(struct qeth_card *card) 257 { 258 struct qeth_buffer_pool_entry *pool_entry; 259 void *ptr; 260 int i, j; 261 262 QETH_CARD_TEXT(card, 5, "alocpool"); 263 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 264 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 265 if (!pool_entry) { 266 qeth_free_buffer_pool(card); 267 return -ENOMEM; 268 } 269 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 270 ptr = (void *) __get_free_page(GFP_KERNEL); 271 if (!ptr) { 272 while (j > 0) 273 free_page((unsigned long) 274 pool_entry->elements[--j]); 275 kfree(pool_entry); 276 qeth_free_buffer_pool(card); 277 return -ENOMEM; 278 } 279 pool_entry->elements[j] = ptr; 280 } 281 list_add(&pool_entry->init_list, 282 &card->qdio.init_pool.entry_list); 283 } 284 return 0; 285 } 286 287 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 288 { 289 QETH_CARD_TEXT(card, 2, "realcbp"); 290 291 if ((card->state != CARD_STATE_DOWN) && 292 (card->state != CARD_STATE_RECOVER)) 293 return -EPERM; 294 295 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 296 qeth_clear_working_pool_list(card); 297 qeth_free_buffer_pool(card); 298 card->qdio.in_buf_pool.buf_count = bufcnt; 299 card->qdio.init_pool.buf_count = bufcnt; 300 return qeth_alloc_buffer_pool(card); 301 } 302 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 303 304 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 305 { 306 if (!q) 307 return; 308 309 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 310 kfree(q); 311 } 312 313 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 314 { 315 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 316 int i; 317 318 if (!q) 319 return NULL; 320 321 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 322 kfree(q); 323 return NULL; 324 } 325 326 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 327 q->bufs[i].buffer = q->qdio_bufs[i]; 328 329 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 330 return q; 331 } 332 333 static inline int qeth_cq_init(struct qeth_card *card) 334 { 335 int rc; 336 337 if (card->options.cq == QETH_CQ_ENABLED) { 338 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 339 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 340 QDIO_MAX_BUFFERS_PER_Q); 341 card->qdio.c_q->next_buf_to_init = 127; 342 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 343 card->qdio.no_in_queues - 1, 0, 344 127); 345 if (rc) { 346 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 347 goto out; 348 } 349 } 350 rc = 0; 351 out: 352 return rc; 353 } 354 355 static inline int qeth_alloc_cq(struct qeth_card *card) 356 { 357 int rc; 358 359 if (card->options.cq == QETH_CQ_ENABLED) { 360 int i; 361 struct qdio_outbuf_state *outbuf_states; 362 363 QETH_DBF_TEXT(SETUP, 2, "cqon"); 364 card->qdio.c_q = qeth_alloc_qdio_queue(); 365 if (!card->qdio.c_q) { 366 rc = -1; 367 goto kmsg_out; 368 } 369 card->qdio.no_in_queues = 2; 370 card->qdio.out_bufstates = 371 kzalloc(card->qdio.no_out_queues * 372 QDIO_MAX_BUFFERS_PER_Q * 373 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 374 outbuf_states = card->qdio.out_bufstates; 375 if (outbuf_states == NULL) { 376 rc = -1; 377 goto free_cq_out; 378 } 379 for (i = 0; i < card->qdio.no_out_queues; ++i) { 380 card->qdio.out_qs[i]->bufstates = outbuf_states; 381 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 382 } 383 } else { 384 QETH_DBF_TEXT(SETUP, 2, "nocq"); 385 card->qdio.c_q = NULL; 386 card->qdio.no_in_queues = 1; 387 } 388 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 389 rc = 0; 390 out: 391 return rc; 392 free_cq_out: 393 qeth_free_qdio_queue(card->qdio.c_q); 394 card->qdio.c_q = NULL; 395 kmsg_out: 396 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 397 goto out; 398 } 399 400 static inline void qeth_free_cq(struct qeth_card *card) 401 { 402 if (card->qdio.c_q) { 403 --card->qdio.no_in_queues; 404 qeth_free_qdio_queue(card->qdio.c_q); 405 card->qdio.c_q = NULL; 406 } 407 kfree(card->qdio.out_bufstates); 408 card->qdio.out_bufstates = NULL; 409 } 410 411 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 412 int delayed) { 413 enum iucv_tx_notify n; 414 415 switch (sbalf15) { 416 case 0: 417 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 418 break; 419 case 4: 420 case 16: 421 case 17: 422 case 18: 423 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 424 TX_NOTIFY_UNREACHABLE; 425 break; 426 default: 427 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 428 TX_NOTIFY_GENERALERROR; 429 break; 430 } 431 432 return n; 433 } 434 435 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, 436 int bidx, int forced_cleanup) 437 { 438 if (q->card->options.cq != QETH_CQ_ENABLED) 439 return; 440 441 if (q->bufs[bidx]->next_pending != NULL) { 442 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 443 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 444 445 while (c) { 446 if (forced_cleanup || 447 atomic_read(&c->state) == 448 QETH_QDIO_BUF_HANDLED_DELAYED) { 449 struct qeth_qdio_out_buffer *f = c; 450 QETH_CARD_TEXT(f->q->card, 5, "fp"); 451 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 452 /* release here to avoid interleaving between 453 outbound tasklet and inbound tasklet 454 regarding notifications and lifecycle */ 455 qeth_release_skbs(c); 456 457 c = f->next_pending; 458 WARN_ON_ONCE(head->next_pending != f); 459 head->next_pending = c; 460 kmem_cache_free(qeth_qdio_outbuf_cache, f); 461 } else { 462 head = c; 463 c = c->next_pending; 464 } 465 466 } 467 } 468 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 469 QETH_QDIO_BUF_HANDLED_DELAYED)) { 470 /* for recovery situations */ 471 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 472 qeth_init_qdio_out_buf(q, bidx); 473 QETH_CARD_TEXT(q->card, 2, "clprecov"); 474 } 475 } 476 477 478 static inline void qeth_qdio_handle_aob(struct qeth_card *card, 479 unsigned long phys_aob_addr) { 480 struct qaob *aob; 481 struct qeth_qdio_out_buffer *buffer; 482 enum iucv_tx_notify notification; 483 484 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 485 QETH_CARD_TEXT(card, 5, "haob"); 486 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 487 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 488 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 489 490 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 491 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 492 notification = TX_NOTIFY_OK; 493 } else { 494 WARN_ON_ONCE(atomic_read(&buffer->state) != 495 QETH_QDIO_BUF_PENDING); 496 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 497 notification = TX_NOTIFY_DELAYED_OK; 498 } 499 500 if (aob->aorc != 0) { 501 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 502 notification = qeth_compute_cq_notification(aob->aorc, 1); 503 } 504 qeth_notify_skbs(buffer->q, buffer, notification); 505 506 buffer->aob = NULL; 507 qeth_clear_output_buffer(buffer->q, buffer, 508 QETH_QDIO_BUF_HANDLED_DELAYED); 509 510 /* from here on: do not touch buffer anymore */ 511 qdio_release_aob(aob); 512 } 513 514 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 515 { 516 return card->options.cq == QETH_CQ_ENABLED && 517 card->qdio.c_q != NULL && 518 queue != 0 && 519 queue == card->qdio.no_in_queues - 1; 520 } 521 522 523 static int qeth_issue_next_read(struct qeth_card *card) 524 { 525 int rc; 526 struct qeth_cmd_buffer *iob; 527 528 QETH_CARD_TEXT(card, 5, "issnxrd"); 529 if (card->read.state != CH_STATE_UP) 530 return -EIO; 531 iob = qeth_get_buffer(&card->read); 532 if (!iob) { 533 dev_warn(&card->gdev->dev, "The qeth device driver " 534 "failed to recover an error on the device\n"); 535 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 536 "available\n", dev_name(&card->gdev->dev)); 537 return -ENOMEM; 538 } 539 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 540 QETH_CARD_TEXT(card, 6, "noirqpnd"); 541 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 542 (addr_t) iob, 0, 0); 543 if (rc) { 544 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 545 "rc=%i\n", dev_name(&card->gdev->dev), rc); 546 atomic_set(&card->read.irq_pending, 0); 547 card->read_or_write_problem = 1; 548 qeth_schedule_recovery(card); 549 wake_up(&card->wait_q); 550 } 551 return rc; 552 } 553 554 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 555 { 556 struct qeth_reply *reply; 557 558 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 559 if (reply) { 560 atomic_set(&reply->refcnt, 1); 561 atomic_set(&reply->received, 0); 562 reply->card = card; 563 } 564 return reply; 565 } 566 567 static void qeth_get_reply(struct qeth_reply *reply) 568 { 569 WARN_ON(atomic_read(&reply->refcnt) <= 0); 570 atomic_inc(&reply->refcnt); 571 } 572 573 static void qeth_put_reply(struct qeth_reply *reply) 574 { 575 WARN_ON(atomic_read(&reply->refcnt) <= 0); 576 if (atomic_dec_and_test(&reply->refcnt)) 577 kfree(reply); 578 } 579 580 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 581 struct qeth_card *card) 582 { 583 char *ipa_name; 584 int com = cmd->hdr.command; 585 ipa_name = qeth_get_ipa_cmd_name(com); 586 if (rc) 587 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 588 "x%X \"%s\"\n", 589 ipa_name, com, dev_name(&card->gdev->dev), 590 QETH_CARD_IFNAME(card), rc, 591 qeth_get_ipa_msg(rc)); 592 else 593 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 594 ipa_name, com, dev_name(&card->gdev->dev), 595 QETH_CARD_IFNAME(card)); 596 } 597 598 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 599 struct qeth_cmd_buffer *iob) 600 { 601 struct qeth_ipa_cmd *cmd = NULL; 602 603 QETH_CARD_TEXT(card, 5, "chkipad"); 604 if (IS_IPA(iob->data)) { 605 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 606 if (IS_IPA_REPLY(cmd)) { 607 if (cmd->hdr.command != IPA_CMD_SETCCID && 608 cmd->hdr.command != IPA_CMD_DELCCID && 609 cmd->hdr.command != IPA_CMD_MODCCID && 610 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 611 qeth_issue_ipa_msg(cmd, 612 cmd->hdr.return_code, card); 613 return cmd; 614 } else { 615 switch (cmd->hdr.command) { 616 case IPA_CMD_STOPLAN: 617 if (cmd->hdr.return_code == 618 IPA_RC_VEPA_TO_VEB_TRANSITION) { 619 dev_err(&card->gdev->dev, 620 "Interface %s is down because the " 621 "adjacent port is no longer in " 622 "reflective relay mode\n", 623 QETH_CARD_IFNAME(card)); 624 qeth_close_dev(card); 625 } else { 626 dev_warn(&card->gdev->dev, 627 "The link for interface %s on CHPID" 628 " 0x%X failed\n", 629 QETH_CARD_IFNAME(card), 630 card->info.chpid); 631 qeth_issue_ipa_msg(cmd, 632 cmd->hdr.return_code, card); 633 } 634 card->lan_online = 0; 635 if (card->dev && netif_carrier_ok(card->dev)) 636 netif_carrier_off(card->dev); 637 return NULL; 638 case IPA_CMD_STARTLAN: 639 dev_info(&card->gdev->dev, 640 "The link for %s on CHPID 0x%X has" 641 " been restored\n", 642 QETH_CARD_IFNAME(card), 643 card->info.chpid); 644 netif_carrier_on(card->dev); 645 card->lan_online = 1; 646 if (card->info.hwtrap) 647 card->info.hwtrap = 2; 648 qeth_schedule_recovery(card); 649 return NULL; 650 case IPA_CMD_SETBRIDGEPORT_IQD: 651 case IPA_CMD_SETBRIDGEPORT_OSA: 652 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 653 if (card->discipline->control_event_handler 654 (card, cmd)) 655 return cmd; 656 else 657 return NULL; 658 case IPA_CMD_MODCCID: 659 return cmd; 660 case IPA_CMD_REGISTER_LOCAL_ADDR: 661 QETH_CARD_TEXT(card, 3, "irla"); 662 break; 663 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 664 QETH_CARD_TEXT(card, 3, "urla"); 665 break; 666 default: 667 QETH_DBF_MESSAGE(2, "Received data is IPA " 668 "but not a reply!\n"); 669 break; 670 } 671 } 672 } 673 return cmd; 674 } 675 676 void qeth_clear_ipacmd_list(struct qeth_card *card) 677 { 678 struct qeth_reply *reply, *r; 679 unsigned long flags; 680 681 QETH_CARD_TEXT(card, 4, "clipalst"); 682 683 spin_lock_irqsave(&card->lock, flags); 684 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 685 qeth_get_reply(reply); 686 reply->rc = -EIO; 687 atomic_inc(&reply->received); 688 list_del_init(&reply->list); 689 wake_up(&reply->wait_q); 690 qeth_put_reply(reply); 691 } 692 spin_unlock_irqrestore(&card->lock, flags); 693 atomic_set(&card->write.irq_pending, 0); 694 } 695 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 696 697 static int qeth_check_idx_response(struct qeth_card *card, 698 unsigned char *buffer) 699 { 700 if (!buffer) 701 return 0; 702 703 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 704 if ((buffer[2] & 0xc0) == 0xc0) { 705 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 706 "with cause code 0x%02x%s\n", 707 buffer[4], 708 ((buffer[4] == 0x22) ? 709 " -- try another portname" : "")); 710 QETH_CARD_TEXT(card, 2, "ckidxres"); 711 QETH_CARD_TEXT(card, 2, " idxterm"); 712 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 713 if (buffer[4] == 0xf6) { 714 dev_err(&card->gdev->dev, 715 "The qeth device is not configured " 716 "for the OSI layer required by z/VM\n"); 717 return -EPERM; 718 } 719 return -EIO; 720 } 721 return 0; 722 } 723 724 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 725 { 726 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 727 dev_get_drvdata(&cdev->dev))->dev); 728 return card; 729 } 730 731 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 732 __u32 len) 733 { 734 struct qeth_card *card; 735 736 card = CARD_FROM_CDEV(channel->ccwdev); 737 QETH_CARD_TEXT(card, 4, "setupccw"); 738 if (channel == &card->read) 739 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 740 else 741 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 742 channel->ccw.count = len; 743 channel->ccw.cda = (__u32) __pa(iob); 744 } 745 746 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 747 { 748 __u8 index; 749 750 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 751 index = channel->io_buf_no; 752 do { 753 if (channel->iob[index].state == BUF_STATE_FREE) { 754 channel->iob[index].state = BUF_STATE_LOCKED; 755 channel->io_buf_no = (channel->io_buf_no + 1) % 756 QETH_CMD_BUFFER_NO; 757 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 758 return channel->iob + index; 759 } 760 index = (index + 1) % QETH_CMD_BUFFER_NO; 761 } while (index != channel->io_buf_no); 762 763 return NULL; 764 } 765 766 void qeth_release_buffer(struct qeth_channel *channel, 767 struct qeth_cmd_buffer *iob) 768 { 769 unsigned long flags; 770 771 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 772 spin_lock_irqsave(&channel->iob_lock, flags); 773 memset(iob->data, 0, QETH_BUFSIZE); 774 iob->state = BUF_STATE_FREE; 775 iob->callback = qeth_send_control_data_cb; 776 iob->rc = 0; 777 spin_unlock_irqrestore(&channel->iob_lock, flags); 778 wake_up(&channel->wait_q); 779 } 780 EXPORT_SYMBOL_GPL(qeth_release_buffer); 781 782 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 783 { 784 struct qeth_cmd_buffer *buffer = NULL; 785 unsigned long flags; 786 787 spin_lock_irqsave(&channel->iob_lock, flags); 788 buffer = __qeth_get_buffer(channel); 789 spin_unlock_irqrestore(&channel->iob_lock, flags); 790 return buffer; 791 } 792 793 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 794 { 795 struct qeth_cmd_buffer *buffer; 796 wait_event(channel->wait_q, 797 ((buffer = qeth_get_buffer(channel)) != NULL)); 798 return buffer; 799 } 800 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 801 802 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 803 { 804 int cnt; 805 806 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 807 qeth_release_buffer(channel, &channel->iob[cnt]); 808 channel->buf_no = 0; 809 channel->io_buf_no = 0; 810 } 811 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 812 813 static void qeth_send_control_data_cb(struct qeth_channel *channel, 814 struct qeth_cmd_buffer *iob) 815 { 816 struct qeth_card *card; 817 struct qeth_reply *reply, *r; 818 struct qeth_ipa_cmd *cmd; 819 unsigned long flags; 820 int keep_reply; 821 int rc = 0; 822 823 card = CARD_FROM_CDEV(channel->ccwdev); 824 QETH_CARD_TEXT(card, 4, "sndctlcb"); 825 rc = qeth_check_idx_response(card, iob->data); 826 switch (rc) { 827 case 0: 828 break; 829 case -EIO: 830 qeth_clear_ipacmd_list(card); 831 qeth_schedule_recovery(card); 832 /* fall through */ 833 default: 834 goto out; 835 } 836 837 cmd = qeth_check_ipa_data(card, iob); 838 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 839 goto out; 840 /*in case of OSN : check if cmd is set */ 841 if (card->info.type == QETH_CARD_TYPE_OSN && 842 cmd && 843 cmd->hdr.command != IPA_CMD_STARTLAN && 844 card->osn_info.assist_cb != NULL) { 845 card->osn_info.assist_cb(card->dev, cmd); 846 goto out; 847 } 848 849 spin_lock_irqsave(&card->lock, flags); 850 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 851 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 852 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 853 qeth_get_reply(reply); 854 list_del_init(&reply->list); 855 spin_unlock_irqrestore(&card->lock, flags); 856 keep_reply = 0; 857 if (reply->callback != NULL) { 858 if (cmd) { 859 reply->offset = (__u16)((char *)cmd - 860 (char *)iob->data); 861 keep_reply = reply->callback(card, 862 reply, 863 (unsigned long)cmd); 864 } else 865 keep_reply = reply->callback(card, 866 reply, 867 (unsigned long)iob); 868 } 869 if (cmd) 870 reply->rc = (u16) cmd->hdr.return_code; 871 else if (iob->rc) 872 reply->rc = iob->rc; 873 if (keep_reply) { 874 spin_lock_irqsave(&card->lock, flags); 875 list_add_tail(&reply->list, 876 &card->cmd_waiter_list); 877 spin_unlock_irqrestore(&card->lock, flags); 878 } else { 879 atomic_inc(&reply->received); 880 wake_up(&reply->wait_q); 881 } 882 qeth_put_reply(reply); 883 goto out; 884 } 885 } 886 spin_unlock_irqrestore(&card->lock, flags); 887 out: 888 memcpy(&card->seqno.pdu_hdr_ack, 889 QETH_PDU_HEADER_SEQ_NO(iob->data), 890 QETH_SEQ_NO_LENGTH); 891 qeth_release_buffer(channel, iob); 892 } 893 894 static int qeth_setup_channel(struct qeth_channel *channel) 895 { 896 int cnt; 897 898 QETH_DBF_TEXT(SETUP, 2, "setupch"); 899 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 900 channel->iob[cnt].data = 901 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 902 if (channel->iob[cnt].data == NULL) 903 break; 904 channel->iob[cnt].state = BUF_STATE_FREE; 905 channel->iob[cnt].channel = channel; 906 channel->iob[cnt].callback = qeth_send_control_data_cb; 907 channel->iob[cnt].rc = 0; 908 } 909 if (cnt < QETH_CMD_BUFFER_NO) { 910 while (cnt-- > 0) 911 kfree(channel->iob[cnt].data); 912 return -ENOMEM; 913 } 914 channel->buf_no = 0; 915 channel->io_buf_no = 0; 916 atomic_set(&channel->irq_pending, 0); 917 spin_lock_init(&channel->iob_lock); 918 919 init_waitqueue_head(&channel->wait_q); 920 return 0; 921 } 922 923 static int qeth_set_thread_start_bit(struct qeth_card *card, 924 unsigned long thread) 925 { 926 unsigned long flags; 927 928 spin_lock_irqsave(&card->thread_mask_lock, flags); 929 if (!(card->thread_allowed_mask & thread) || 930 (card->thread_start_mask & thread)) { 931 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 932 return -EPERM; 933 } 934 card->thread_start_mask |= thread; 935 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 936 return 0; 937 } 938 939 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 940 { 941 unsigned long flags; 942 943 spin_lock_irqsave(&card->thread_mask_lock, flags); 944 card->thread_start_mask &= ~thread; 945 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 946 wake_up(&card->wait_q); 947 } 948 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 949 950 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 951 { 952 unsigned long flags; 953 954 spin_lock_irqsave(&card->thread_mask_lock, flags); 955 card->thread_running_mask &= ~thread; 956 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 957 wake_up(&card->wait_q); 958 } 959 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 960 961 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 962 { 963 unsigned long flags; 964 int rc = 0; 965 966 spin_lock_irqsave(&card->thread_mask_lock, flags); 967 if (card->thread_start_mask & thread) { 968 if ((card->thread_allowed_mask & thread) && 969 !(card->thread_running_mask & thread)) { 970 rc = 1; 971 card->thread_start_mask &= ~thread; 972 card->thread_running_mask |= thread; 973 } else 974 rc = -EPERM; 975 } 976 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 977 return rc; 978 } 979 980 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 981 { 982 int rc = 0; 983 984 wait_event(card->wait_q, 985 (rc = __qeth_do_run_thread(card, thread)) >= 0); 986 return rc; 987 } 988 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 989 990 void qeth_schedule_recovery(struct qeth_card *card) 991 { 992 QETH_CARD_TEXT(card, 2, "startrec"); 993 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 994 schedule_work(&card->kernel_thread_starter); 995 } 996 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 997 998 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 999 { 1000 int dstat, cstat; 1001 char *sense; 1002 struct qeth_card *card; 1003 1004 sense = (char *) irb->ecw; 1005 cstat = irb->scsw.cmd.cstat; 1006 dstat = irb->scsw.cmd.dstat; 1007 card = CARD_FROM_CDEV(cdev); 1008 1009 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1010 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1011 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1012 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1013 dev_warn(&cdev->dev, "The qeth device driver " 1014 "failed to recover an error on the device\n"); 1015 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1016 dev_name(&cdev->dev), dstat, cstat); 1017 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1018 16, 1, irb, 64, 1); 1019 return 1; 1020 } 1021 1022 if (dstat & DEV_STAT_UNIT_CHECK) { 1023 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1024 SENSE_RESETTING_EVENT_FLAG) { 1025 QETH_CARD_TEXT(card, 2, "REVIND"); 1026 return 1; 1027 } 1028 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1029 SENSE_COMMAND_REJECT_FLAG) { 1030 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1031 return 1; 1032 } 1033 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1034 QETH_CARD_TEXT(card, 2, "AFFE"); 1035 return 1; 1036 } 1037 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1038 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1039 return 0; 1040 } 1041 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1042 return 1; 1043 } 1044 return 0; 1045 } 1046 1047 static long __qeth_check_irb_error(struct ccw_device *cdev, 1048 unsigned long intparm, struct irb *irb) 1049 { 1050 struct qeth_card *card; 1051 1052 card = CARD_FROM_CDEV(cdev); 1053 1054 if (!card || !IS_ERR(irb)) 1055 return 0; 1056 1057 switch (PTR_ERR(irb)) { 1058 case -EIO: 1059 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1060 dev_name(&cdev->dev)); 1061 QETH_CARD_TEXT(card, 2, "ckirberr"); 1062 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1063 break; 1064 case -ETIMEDOUT: 1065 dev_warn(&cdev->dev, "A hardware operation timed out" 1066 " on the device\n"); 1067 QETH_CARD_TEXT(card, 2, "ckirberr"); 1068 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1069 if (intparm == QETH_RCD_PARM) { 1070 if (card->data.ccwdev == cdev) { 1071 card->data.state = CH_STATE_DOWN; 1072 wake_up(&card->wait_q); 1073 } 1074 } 1075 break; 1076 default: 1077 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1078 dev_name(&cdev->dev), PTR_ERR(irb)); 1079 QETH_CARD_TEXT(card, 2, "ckirberr"); 1080 QETH_CARD_TEXT(card, 2, " rc???"); 1081 } 1082 return PTR_ERR(irb); 1083 } 1084 1085 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1086 struct irb *irb) 1087 { 1088 int rc; 1089 int cstat, dstat; 1090 struct qeth_cmd_buffer *buffer; 1091 struct qeth_channel *channel; 1092 struct qeth_card *card; 1093 struct qeth_cmd_buffer *iob; 1094 __u8 index; 1095 1096 if (__qeth_check_irb_error(cdev, intparm, irb)) 1097 return; 1098 cstat = irb->scsw.cmd.cstat; 1099 dstat = irb->scsw.cmd.dstat; 1100 1101 card = CARD_FROM_CDEV(cdev); 1102 if (!card) 1103 return; 1104 1105 QETH_CARD_TEXT(card, 5, "irq"); 1106 1107 if (card->read.ccwdev == cdev) { 1108 channel = &card->read; 1109 QETH_CARD_TEXT(card, 5, "read"); 1110 } else if (card->write.ccwdev == cdev) { 1111 channel = &card->write; 1112 QETH_CARD_TEXT(card, 5, "write"); 1113 } else { 1114 channel = &card->data; 1115 QETH_CARD_TEXT(card, 5, "data"); 1116 } 1117 atomic_set(&channel->irq_pending, 0); 1118 1119 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1120 channel->state = CH_STATE_STOPPED; 1121 1122 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1123 channel->state = CH_STATE_HALTED; 1124 1125 /*let's wake up immediately on data channel*/ 1126 if ((channel == &card->data) && (intparm != 0) && 1127 (intparm != QETH_RCD_PARM)) 1128 goto out; 1129 1130 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1131 QETH_CARD_TEXT(card, 6, "clrchpar"); 1132 /* we don't have to handle this further */ 1133 intparm = 0; 1134 } 1135 if (intparm == QETH_HALT_CHANNEL_PARM) { 1136 QETH_CARD_TEXT(card, 6, "hltchpar"); 1137 /* we don't have to handle this further */ 1138 intparm = 0; 1139 } 1140 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1141 (dstat & DEV_STAT_UNIT_CHECK) || 1142 (cstat)) { 1143 if (irb->esw.esw0.erw.cons) { 1144 dev_warn(&channel->ccwdev->dev, 1145 "The qeth device driver failed to recover " 1146 "an error on the device\n"); 1147 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1148 "0x%X dstat 0x%X\n", 1149 dev_name(&channel->ccwdev->dev), cstat, dstat); 1150 print_hex_dump(KERN_WARNING, "qeth: irb ", 1151 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1152 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1153 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1154 } 1155 if (intparm == QETH_RCD_PARM) { 1156 channel->state = CH_STATE_DOWN; 1157 goto out; 1158 } 1159 rc = qeth_get_problem(cdev, irb); 1160 if (rc) { 1161 qeth_clear_ipacmd_list(card); 1162 qeth_schedule_recovery(card); 1163 goto out; 1164 } 1165 } 1166 1167 if (intparm == QETH_RCD_PARM) { 1168 channel->state = CH_STATE_RCD_DONE; 1169 goto out; 1170 } 1171 if (intparm) { 1172 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1173 buffer->state = BUF_STATE_PROCESSED; 1174 } 1175 if (channel == &card->data) 1176 return; 1177 if (channel == &card->read && 1178 channel->state == CH_STATE_UP) 1179 qeth_issue_next_read(card); 1180 1181 iob = channel->iob; 1182 index = channel->buf_no; 1183 while (iob[index].state == BUF_STATE_PROCESSED) { 1184 if (iob[index].callback != NULL) 1185 iob[index].callback(channel, iob + index); 1186 1187 index = (index + 1) % QETH_CMD_BUFFER_NO; 1188 } 1189 channel->buf_no = index; 1190 out: 1191 wake_up(&card->wait_q); 1192 return; 1193 } 1194 1195 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1196 struct qeth_qdio_out_buffer *buf, 1197 enum iucv_tx_notify notification) 1198 { 1199 struct sk_buff *skb; 1200 1201 if (skb_queue_empty(&buf->skb_list)) 1202 goto out; 1203 skb = skb_peek(&buf->skb_list); 1204 while (skb) { 1205 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1206 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1207 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1208 if (skb->sk) { 1209 struct iucv_sock *iucv = iucv_sk(skb->sk); 1210 iucv->sk_txnotify(skb, notification); 1211 } 1212 } 1213 if (skb_queue_is_last(&buf->skb_list, skb)) 1214 skb = NULL; 1215 else 1216 skb = skb_queue_next(&buf->skb_list, skb); 1217 } 1218 out: 1219 return; 1220 } 1221 1222 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1223 { 1224 struct sk_buff *skb; 1225 struct iucv_sock *iucv; 1226 int notify_general_error = 0; 1227 1228 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1229 notify_general_error = 1; 1230 1231 /* release may never happen from within CQ tasklet scope */ 1232 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1233 1234 skb = skb_dequeue(&buf->skb_list); 1235 while (skb) { 1236 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1237 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1238 if (notify_general_error && 1239 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1240 if (skb->sk) { 1241 iucv = iucv_sk(skb->sk); 1242 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1243 } 1244 } 1245 refcount_dec(&skb->users); 1246 dev_kfree_skb_any(skb); 1247 skb = skb_dequeue(&buf->skb_list); 1248 } 1249 } 1250 1251 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1252 struct qeth_qdio_out_buffer *buf, 1253 enum qeth_qdio_buffer_states newbufstate) 1254 { 1255 int i; 1256 1257 /* is PCI flag set on buffer? */ 1258 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1259 atomic_dec(&queue->set_pci_flags_count); 1260 1261 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1262 qeth_release_skbs(buf); 1263 } 1264 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1265 if (buf->buffer->element[i].addr && buf->is_header[i]) 1266 kmem_cache_free(qeth_core_header_cache, 1267 buf->buffer->element[i].addr); 1268 buf->is_header[i] = 0; 1269 buf->buffer->element[i].length = 0; 1270 buf->buffer->element[i].addr = NULL; 1271 buf->buffer->element[i].eflags = 0; 1272 buf->buffer->element[i].sflags = 0; 1273 } 1274 buf->buffer->element[15].eflags = 0; 1275 buf->buffer->element[15].sflags = 0; 1276 buf->next_element_to_fill = 0; 1277 atomic_set(&buf->state, newbufstate); 1278 } 1279 1280 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1281 { 1282 int j; 1283 1284 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1285 if (!q->bufs[j]) 1286 continue; 1287 qeth_cleanup_handled_pending(q, j, 1); 1288 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1289 if (free) { 1290 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1291 q->bufs[j] = NULL; 1292 } 1293 } 1294 } 1295 1296 void qeth_clear_qdio_buffers(struct qeth_card *card) 1297 { 1298 int i; 1299 1300 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1301 /* clear outbound buffers to free skbs */ 1302 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1303 if (card->qdio.out_qs[i]) { 1304 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1305 } 1306 } 1307 } 1308 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1309 1310 static void qeth_free_buffer_pool(struct qeth_card *card) 1311 { 1312 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1313 int i = 0; 1314 list_for_each_entry_safe(pool_entry, tmp, 1315 &card->qdio.init_pool.entry_list, init_list){ 1316 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1317 free_page((unsigned long)pool_entry->elements[i]); 1318 list_del(&pool_entry->init_list); 1319 kfree(pool_entry); 1320 } 1321 } 1322 1323 static void qeth_clean_channel(struct qeth_channel *channel) 1324 { 1325 int cnt; 1326 1327 QETH_DBF_TEXT(SETUP, 2, "freech"); 1328 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1329 kfree(channel->iob[cnt].data); 1330 } 1331 1332 static void qeth_set_single_write_queues(struct qeth_card *card) 1333 { 1334 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1335 (card->qdio.no_out_queues == 4)) 1336 qeth_free_qdio_buffers(card); 1337 1338 card->qdio.no_out_queues = 1; 1339 if (card->qdio.default_out_queue != 0) 1340 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1341 1342 card->qdio.default_out_queue = 0; 1343 } 1344 1345 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1346 { 1347 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1348 (card->qdio.no_out_queues == 1)) { 1349 qeth_free_qdio_buffers(card); 1350 card->qdio.default_out_queue = 2; 1351 } 1352 card->qdio.no_out_queues = 4; 1353 } 1354 1355 static void qeth_update_from_chp_desc(struct qeth_card *card) 1356 { 1357 struct ccw_device *ccwdev; 1358 struct channel_path_desc *chp_dsc; 1359 1360 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1361 1362 ccwdev = card->data.ccwdev; 1363 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1364 if (!chp_dsc) 1365 goto out; 1366 1367 card->info.func_level = 0x4100 + chp_dsc->desc; 1368 if (card->info.type == QETH_CARD_TYPE_IQD) 1369 goto out; 1370 1371 /* CHPP field bit 6 == 1 -> single queue */ 1372 if ((chp_dsc->chpp & 0x02) == 0x02) 1373 qeth_set_single_write_queues(card); 1374 else 1375 qeth_set_multiple_write_queues(card); 1376 out: 1377 kfree(chp_dsc); 1378 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1379 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1380 } 1381 1382 static void qeth_init_qdio_info(struct qeth_card *card) 1383 { 1384 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1385 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1386 /* inbound */ 1387 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1388 if (card->info.type == QETH_CARD_TYPE_IQD) 1389 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1390 else 1391 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1392 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1393 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1394 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1395 } 1396 1397 static void qeth_set_intial_options(struct qeth_card *card) 1398 { 1399 card->options.route4.type = NO_ROUTER; 1400 card->options.route6.type = NO_ROUTER; 1401 card->options.fake_broadcast = 0; 1402 card->options.performance_stats = 0; 1403 card->options.rx_sg_cb = QETH_RX_SG_CB; 1404 card->options.isolation = ISOLATION_MODE_NONE; 1405 card->options.cq = QETH_CQ_DISABLED; 1406 } 1407 1408 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1409 { 1410 unsigned long flags; 1411 int rc = 0; 1412 1413 spin_lock_irqsave(&card->thread_mask_lock, flags); 1414 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1415 (u8) card->thread_start_mask, 1416 (u8) card->thread_allowed_mask, 1417 (u8) card->thread_running_mask); 1418 rc = (card->thread_start_mask & thread); 1419 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1420 return rc; 1421 } 1422 1423 static void qeth_start_kernel_thread(struct work_struct *work) 1424 { 1425 struct task_struct *ts; 1426 struct qeth_card *card = container_of(work, struct qeth_card, 1427 kernel_thread_starter); 1428 QETH_CARD_TEXT(card , 2, "strthrd"); 1429 1430 if (card->read.state != CH_STATE_UP && 1431 card->write.state != CH_STATE_UP) 1432 return; 1433 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1434 ts = kthread_run(card->discipline->recover, (void *)card, 1435 "qeth_recover"); 1436 if (IS_ERR(ts)) { 1437 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1438 qeth_clear_thread_running_bit(card, 1439 QETH_RECOVER_THREAD); 1440 } 1441 } 1442 } 1443 1444 static void qeth_buffer_reclaim_work(struct work_struct *); 1445 static int qeth_setup_card(struct qeth_card *card) 1446 { 1447 1448 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1449 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1450 1451 card->read.state = CH_STATE_DOWN; 1452 card->write.state = CH_STATE_DOWN; 1453 card->data.state = CH_STATE_DOWN; 1454 card->state = CARD_STATE_DOWN; 1455 card->lan_online = 0; 1456 card->read_or_write_problem = 0; 1457 card->dev = NULL; 1458 spin_lock_init(&card->vlanlock); 1459 spin_lock_init(&card->mclock); 1460 spin_lock_init(&card->lock); 1461 spin_lock_init(&card->ip_lock); 1462 spin_lock_init(&card->thread_mask_lock); 1463 mutex_init(&card->conf_mutex); 1464 mutex_init(&card->discipline_mutex); 1465 card->thread_start_mask = 0; 1466 card->thread_allowed_mask = 0; 1467 card->thread_running_mask = 0; 1468 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1469 INIT_LIST_HEAD(&card->cmd_waiter_list); 1470 init_waitqueue_head(&card->wait_q); 1471 /* initial options */ 1472 qeth_set_intial_options(card); 1473 /* IP address takeover */ 1474 INIT_LIST_HEAD(&card->ipato.entries); 1475 card->ipato.enabled = 0; 1476 card->ipato.invert4 = 0; 1477 card->ipato.invert6 = 0; 1478 /* init QDIO stuff */ 1479 qeth_init_qdio_info(card); 1480 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1481 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1482 return 0; 1483 } 1484 1485 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1486 { 1487 struct qeth_card *card = container_of(slr, struct qeth_card, 1488 qeth_service_level); 1489 if (card->info.mcl_level[0]) 1490 seq_printf(m, "qeth: %s firmware level %s\n", 1491 CARD_BUS_ID(card), card->info.mcl_level); 1492 } 1493 1494 static struct qeth_card *qeth_alloc_card(void) 1495 { 1496 struct qeth_card *card; 1497 1498 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1499 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1500 if (!card) 1501 goto out; 1502 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1503 if (qeth_setup_channel(&card->read)) 1504 goto out_ip; 1505 if (qeth_setup_channel(&card->write)) 1506 goto out_channel; 1507 card->options.layer2 = -1; 1508 card->qeth_service_level.seq_print = qeth_core_sl_print; 1509 register_service_level(&card->qeth_service_level); 1510 return card; 1511 1512 out_channel: 1513 qeth_clean_channel(&card->read); 1514 out_ip: 1515 kfree(card); 1516 out: 1517 return NULL; 1518 } 1519 1520 static int qeth_determine_card_type(struct qeth_card *card) 1521 { 1522 int i = 0; 1523 1524 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1525 1526 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1527 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1528 while (known_devices[i][QETH_DEV_MODEL_IND]) { 1529 if ((CARD_RDEV(card)->id.dev_type == 1530 known_devices[i][QETH_DEV_TYPE_IND]) && 1531 (CARD_RDEV(card)->id.dev_model == 1532 known_devices[i][QETH_DEV_MODEL_IND])) { 1533 card->info.type = known_devices[i][QETH_DEV_MODEL_IND]; 1534 card->qdio.no_out_queues = 1535 known_devices[i][QETH_QUEUE_NO_IND]; 1536 card->qdio.no_in_queues = 1; 1537 card->info.is_multicast_different = 1538 known_devices[i][QETH_MULTICAST_IND]; 1539 qeth_update_from_chp_desc(card); 1540 return 0; 1541 } 1542 i++; 1543 } 1544 card->info.type = QETH_CARD_TYPE_UNKNOWN; 1545 dev_err(&card->gdev->dev, "The adapter hardware is of an " 1546 "unknown type\n"); 1547 return -ENOENT; 1548 } 1549 1550 static int qeth_clear_channel(struct qeth_channel *channel) 1551 { 1552 unsigned long flags; 1553 struct qeth_card *card; 1554 int rc; 1555 1556 card = CARD_FROM_CDEV(channel->ccwdev); 1557 QETH_CARD_TEXT(card, 3, "clearch"); 1558 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1559 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1560 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1561 1562 if (rc) 1563 return rc; 1564 rc = wait_event_interruptible_timeout(card->wait_q, 1565 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1566 if (rc == -ERESTARTSYS) 1567 return rc; 1568 if (channel->state != CH_STATE_STOPPED) 1569 return -ETIME; 1570 channel->state = CH_STATE_DOWN; 1571 return 0; 1572 } 1573 1574 static int qeth_halt_channel(struct qeth_channel *channel) 1575 { 1576 unsigned long flags; 1577 struct qeth_card *card; 1578 int rc; 1579 1580 card = CARD_FROM_CDEV(channel->ccwdev); 1581 QETH_CARD_TEXT(card, 3, "haltch"); 1582 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1583 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1584 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1585 1586 if (rc) 1587 return rc; 1588 rc = wait_event_interruptible_timeout(card->wait_q, 1589 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1590 if (rc == -ERESTARTSYS) 1591 return rc; 1592 if (channel->state != CH_STATE_HALTED) 1593 return -ETIME; 1594 return 0; 1595 } 1596 1597 static int qeth_halt_channels(struct qeth_card *card) 1598 { 1599 int rc1 = 0, rc2 = 0, rc3 = 0; 1600 1601 QETH_CARD_TEXT(card, 3, "haltchs"); 1602 rc1 = qeth_halt_channel(&card->read); 1603 rc2 = qeth_halt_channel(&card->write); 1604 rc3 = qeth_halt_channel(&card->data); 1605 if (rc1) 1606 return rc1; 1607 if (rc2) 1608 return rc2; 1609 return rc3; 1610 } 1611 1612 static int qeth_clear_channels(struct qeth_card *card) 1613 { 1614 int rc1 = 0, rc2 = 0, rc3 = 0; 1615 1616 QETH_CARD_TEXT(card, 3, "clearchs"); 1617 rc1 = qeth_clear_channel(&card->read); 1618 rc2 = qeth_clear_channel(&card->write); 1619 rc3 = qeth_clear_channel(&card->data); 1620 if (rc1) 1621 return rc1; 1622 if (rc2) 1623 return rc2; 1624 return rc3; 1625 } 1626 1627 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1628 { 1629 int rc = 0; 1630 1631 QETH_CARD_TEXT(card, 3, "clhacrd"); 1632 1633 if (halt) 1634 rc = qeth_halt_channels(card); 1635 if (rc) 1636 return rc; 1637 return qeth_clear_channels(card); 1638 } 1639 1640 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1641 { 1642 int rc = 0; 1643 1644 QETH_CARD_TEXT(card, 3, "qdioclr"); 1645 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1646 QETH_QDIO_CLEANING)) { 1647 case QETH_QDIO_ESTABLISHED: 1648 if (card->info.type == QETH_CARD_TYPE_IQD) 1649 rc = qdio_shutdown(CARD_DDEV(card), 1650 QDIO_FLAG_CLEANUP_USING_HALT); 1651 else 1652 rc = qdio_shutdown(CARD_DDEV(card), 1653 QDIO_FLAG_CLEANUP_USING_CLEAR); 1654 if (rc) 1655 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1656 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1657 break; 1658 case QETH_QDIO_CLEANING: 1659 return rc; 1660 default: 1661 break; 1662 } 1663 rc = qeth_clear_halt_card(card, use_halt); 1664 if (rc) 1665 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1666 card->state = CARD_STATE_DOWN; 1667 return rc; 1668 } 1669 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1670 1671 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1672 int *length) 1673 { 1674 struct ciw *ciw; 1675 char *rcd_buf; 1676 int ret; 1677 struct qeth_channel *channel = &card->data; 1678 unsigned long flags; 1679 1680 /* 1681 * scan for RCD command in extended SenseID data 1682 */ 1683 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1684 if (!ciw || ciw->cmd == 0) 1685 return -EOPNOTSUPP; 1686 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1687 if (!rcd_buf) 1688 return -ENOMEM; 1689 1690 channel->ccw.cmd_code = ciw->cmd; 1691 channel->ccw.cda = (__u32) __pa(rcd_buf); 1692 channel->ccw.count = ciw->count; 1693 channel->ccw.flags = CCW_FLAG_SLI; 1694 channel->state = CH_STATE_RCD; 1695 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1696 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1697 QETH_RCD_PARM, LPM_ANYPATH, 0, 1698 QETH_RCD_TIMEOUT); 1699 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1700 if (!ret) 1701 wait_event(card->wait_q, 1702 (channel->state == CH_STATE_RCD_DONE || 1703 channel->state == CH_STATE_DOWN)); 1704 if (channel->state == CH_STATE_DOWN) 1705 ret = -EIO; 1706 else 1707 channel->state = CH_STATE_DOWN; 1708 if (ret) { 1709 kfree(rcd_buf); 1710 *buffer = NULL; 1711 *length = 0; 1712 } else { 1713 *length = ciw->count; 1714 *buffer = rcd_buf; 1715 } 1716 return ret; 1717 } 1718 1719 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1720 { 1721 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1722 card->info.chpid = prcd[30]; 1723 card->info.unit_addr2 = prcd[31]; 1724 card->info.cula = prcd[63]; 1725 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1726 (prcd[0x11] == _ascebc['M'])); 1727 } 1728 1729 /* Determine whether the device requires a specific layer discipline */ 1730 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1731 { 1732 if (card->info.type == QETH_CARD_TYPE_OSM || 1733 card->info.type == QETH_CARD_TYPE_OSN) { 1734 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1735 return QETH_DISCIPLINE_LAYER2; 1736 } 1737 1738 /* virtual HiperSocket is L3 only: */ 1739 if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) { 1740 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1741 return QETH_DISCIPLINE_LAYER3; 1742 } 1743 1744 QETH_DBF_TEXT(SETUP, 3, "force no"); 1745 return QETH_DISCIPLINE_UNDETERMINED; 1746 } 1747 1748 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1749 { 1750 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1751 1752 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1753 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1754 card->info.blkt.time_total = 0; 1755 card->info.blkt.inter_packet = 0; 1756 card->info.blkt.inter_packet_jumbo = 0; 1757 } else { 1758 card->info.blkt.time_total = 250; 1759 card->info.blkt.inter_packet = 5; 1760 card->info.blkt.inter_packet_jumbo = 15; 1761 } 1762 } 1763 1764 static void qeth_init_tokens(struct qeth_card *card) 1765 { 1766 card->token.issuer_rm_w = 0x00010103UL; 1767 card->token.cm_filter_w = 0x00010108UL; 1768 card->token.cm_connection_w = 0x0001010aUL; 1769 card->token.ulp_filter_w = 0x0001010bUL; 1770 card->token.ulp_connection_w = 0x0001010dUL; 1771 } 1772 1773 static void qeth_init_func_level(struct qeth_card *card) 1774 { 1775 switch (card->info.type) { 1776 case QETH_CARD_TYPE_IQD: 1777 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1778 break; 1779 case QETH_CARD_TYPE_OSD: 1780 case QETH_CARD_TYPE_OSN: 1781 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1782 break; 1783 default: 1784 break; 1785 } 1786 } 1787 1788 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1789 void (*idx_reply_cb)(struct qeth_channel *, 1790 struct qeth_cmd_buffer *)) 1791 { 1792 struct qeth_cmd_buffer *iob; 1793 unsigned long flags; 1794 int rc; 1795 struct qeth_card *card; 1796 1797 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1798 card = CARD_FROM_CDEV(channel->ccwdev); 1799 iob = qeth_get_buffer(channel); 1800 if (!iob) 1801 return -ENOMEM; 1802 iob->callback = idx_reply_cb; 1803 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1804 channel->ccw.count = QETH_BUFSIZE; 1805 channel->ccw.cda = (__u32) __pa(iob->data); 1806 1807 wait_event(card->wait_q, 1808 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1809 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1810 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1811 rc = ccw_device_start(channel->ccwdev, 1812 &channel->ccw, (addr_t) iob, 0, 0); 1813 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1814 1815 if (rc) { 1816 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1817 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1818 atomic_set(&channel->irq_pending, 0); 1819 wake_up(&card->wait_q); 1820 return rc; 1821 } 1822 rc = wait_event_interruptible_timeout(card->wait_q, 1823 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1824 if (rc == -ERESTARTSYS) 1825 return rc; 1826 if (channel->state != CH_STATE_UP) { 1827 rc = -ETIME; 1828 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1829 qeth_clear_cmd_buffers(channel); 1830 } else 1831 rc = 0; 1832 return rc; 1833 } 1834 1835 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1836 void (*idx_reply_cb)(struct qeth_channel *, 1837 struct qeth_cmd_buffer *)) 1838 { 1839 struct qeth_card *card; 1840 struct qeth_cmd_buffer *iob; 1841 unsigned long flags; 1842 __u16 temp; 1843 __u8 tmp; 1844 int rc; 1845 struct ccw_dev_id temp_devid; 1846 1847 card = CARD_FROM_CDEV(channel->ccwdev); 1848 1849 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1850 1851 iob = qeth_get_buffer(channel); 1852 if (!iob) 1853 return -ENOMEM; 1854 iob->callback = idx_reply_cb; 1855 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1856 channel->ccw.count = IDX_ACTIVATE_SIZE; 1857 channel->ccw.cda = (__u32) __pa(iob->data); 1858 if (channel == &card->write) { 1859 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1860 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1861 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1862 card->seqno.trans_hdr++; 1863 } else { 1864 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1865 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1866 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1867 } 1868 tmp = ((__u8)card->info.portno) | 0x80; 1869 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1870 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1871 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1872 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1873 &card->info.func_level, sizeof(__u16)); 1874 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1875 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1876 temp = (card->info.cula << 8) + card->info.unit_addr2; 1877 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1878 1879 wait_event(card->wait_q, 1880 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1881 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1882 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1883 rc = ccw_device_start(channel->ccwdev, 1884 &channel->ccw, (addr_t) iob, 0, 0); 1885 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1886 1887 if (rc) { 1888 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1889 rc); 1890 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1891 atomic_set(&channel->irq_pending, 0); 1892 wake_up(&card->wait_q); 1893 return rc; 1894 } 1895 rc = wait_event_interruptible_timeout(card->wait_q, 1896 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1897 if (rc == -ERESTARTSYS) 1898 return rc; 1899 if (channel->state != CH_STATE_ACTIVATING) { 1900 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1901 " failed to recover an error on the device\n"); 1902 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1903 dev_name(&channel->ccwdev->dev)); 1904 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1905 qeth_clear_cmd_buffers(channel); 1906 return -ETIME; 1907 } 1908 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1909 } 1910 1911 static int qeth_peer_func_level(int level) 1912 { 1913 if ((level & 0xff) == 8) 1914 return (level & 0xff) + 0x400; 1915 if (((level >> 8) & 3) == 1) 1916 return (level & 0xff) + 0x200; 1917 return level; 1918 } 1919 1920 static void qeth_idx_write_cb(struct qeth_channel *channel, 1921 struct qeth_cmd_buffer *iob) 1922 { 1923 struct qeth_card *card; 1924 __u16 temp; 1925 1926 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1927 1928 if (channel->state == CH_STATE_DOWN) { 1929 channel->state = CH_STATE_ACTIVATING; 1930 goto out; 1931 } 1932 card = CARD_FROM_CDEV(channel->ccwdev); 1933 1934 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1935 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1936 dev_err(&card->write.ccwdev->dev, 1937 "The adapter is used exclusively by another " 1938 "host\n"); 1939 else 1940 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1941 " negative reply\n", 1942 dev_name(&card->write.ccwdev->dev)); 1943 goto out; 1944 } 1945 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1946 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1947 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1948 "function level mismatch (sent: 0x%x, received: " 1949 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 1950 card->info.func_level, temp); 1951 goto out; 1952 } 1953 channel->state = CH_STATE_UP; 1954 out: 1955 qeth_release_buffer(channel, iob); 1956 } 1957 1958 static void qeth_idx_read_cb(struct qeth_channel *channel, 1959 struct qeth_cmd_buffer *iob) 1960 { 1961 struct qeth_card *card; 1962 __u16 temp; 1963 1964 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1965 if (channel->state == CH_STATE_DOWN) { 1966 channel->state = CH_STATE_ACTIVATING; 1967 goto out; 1968 } 1969 1970 card = CARD_FROM_CDEV(channel->ccwdev); 1971 if (qeth_check_idx_response(card, iob->data)) 1972 goto out; 1973 1974 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1975 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1976 case QETH_IDX_ACT_ERR_EXCL: 1977 dev_err(&card->write.ccwdev->dev, 1978 "The adapter is used exclusively by another " 1979 "host\n"); 1980 break; 1981 case QETH_IDX_ACT_ERR_AUTH: 1982 case QETH_IDX_ACT_ERR_AUTH_USER: 1983 dev_err(&card->read.ccwdev->dev, 1984 "Setting the device online failed because of " 1985 "insufficient authorization\n"); 1986 break; 1987 default: 1988 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1989 " negative reply\n", 1990 dev_name(&card->read.ccwdev->dev)); 1991 } 1992 QETH_CARD_TEXT_(card, 2, "idxread%c", 1993 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1994 goto out; 1995 } 1996 1997 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1998 if (temp != qeth_peer_func_level(card->info.func_level)) { 1999 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 2000 "level mismatch (sent: 0x%x, received: 0x%x)\n", 2001 dev_name(&card->read.ccwdev->dev), 2002 card->info.func_level, temp); 2003 goto out; 2004 } 2005 memcpy(&card->token.issuer_rm_r, 2006 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2007 QETH_MPC_TOKEN_LENGTH); 2008 memcpy(&card->info.mcl_level[0], 2009 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2010 channel->state = CH_STATE_UP; 2011 out: 2012 qeth_release_buffer(channel, iob); 2013 } 2014 2015 void qeth_prepare_control_data(struct qeth_card *card, int len, 2016 struct qeth_cmd_buffer *iob) 2017 { 2018 qeth_setup_ccw(&card->write, iob->data, len); 2019 iob->callback = qeth_release_buffer; 2020 2021 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2022 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2023 card->seqno.trans_hdr++; 2024 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2025 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2026 card->seqno.pdu_hdr++; 2027 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2028 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2029 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2030 } 2031 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2032 2033 /** 2034 * qeth_send_control_data() - send control command to the card 2035 * @card: qeth_card structure pointer 2036 * @len: size of the command buffer 2037 * @iob: qeth_cmd_buffer pointer 2038 * @reply_cb: callback function pointer 2039 * @cb_card: pointer to the qeth_card structure 2040 * @cb_reply: pointer to the qeth_reply structure 2041 * @cb_cmd: pointer to the original iob for non-IPA 2042 * commands, or to the qeth_ipa_cmd structure 2043 * for the IPA commands. 2044 * @reply_param: private pointer passed to the callback 2045 * 2046 * Returns the value of the `return_code' field of the response 2047 * block returned from the hardware, or other error indication. 2048 * Value of zero indicates successful execution of the command. 2049 * 2050 * Callback function gets called one or more times, with cb_cmd 2051 * pointing to the response returned by the hardware. Callback 2052 * function must return non-zero if more reply blocks are expected, 2053 * and zero if the last or only reply block is received. Callback 2054 * function can get the value of the reply_param pointer from the 2055 * field 'param' of the structure qeth_reply. 2056 */ 2057 2058 int qeth_send_control_data(struct qeth_card *card, int len, 2059 struct qeth_cmd_buffer *iob, 2060 int (*reply_cb)(struct qeth_card *cb_card, 2061 struct qeth_reply *cb_reply, 2062 unsigned long cb_cmd), 2063 void *reply_param) 2064 { 2065 int rc; 2066 unsigned long flags; 2067 struct qeth_reply *reply = NULL; 2068 unsigned long timeout, event_timeout; 2069 struct qeth_ipa_cmd *cmd; 2070 2071 QETH_CARD_TEXT(card, 2, "sendctl"); 2072 2073 if (card->read_or_write_problem) { 2074 qeth_release_buffer(iob->channel, iob); 2075 return -EIO; 2076 } 2077 reply = qeth_alloc_reply(card); 2078 if (!reply) { 2079 return -ENOMEM; 2080 } 2081 reply->callback = reply_cb; 2082 reply->param = reply_param; 2083 if (card->state == CARD_STATE_DOWN) 2084 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2085 else 2086 reply->seqno = card->seqno.ipa++; 2087 init_waitqueue_head(&reply->wait_q); 2088 spin_lock_irqsave(&card->lock, flags); 2089 list_add_tail(&reply->list, &card->cmd_waiter_list); 2090 spin_unlock_irqrestore(&card->lock, flags); 2091 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2092 2093 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2094 qeth_prepare_control_data(card, len, iob); 2095 2096 if (IS_IPA(iob->data)) 2097 event_timeout = QETH_IPA_TIMEOUT; 2098 else 2099 event_timeout = QETH_TIMEOUT; 2100 timeout = jiffies + event_timeout; 2101 2102 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2103 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2104 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2105 (addr_t) iob, 0, 0); 2106 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2107 if (rc) { 2108 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2109 "ccw_device_start rc = %i\n", 2110 dev_name(&card->write.ccwdev->dev), rc); 2111 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2112 spin_lock_irqsave(&card->lock, flags); 2113 list_del_init(&reply->list); 2114 qeth_put_reply(reply); 2115 spin_unlock_irqrestore(&card->lock, flags); 2116 qeth_release_buffer(iob->channel, iob); 2117 atomic_set(&card->write.irq_pending, 0); 2118 wake_up(&card->wait_q); 2119 return rc; 2120 } 2121 2122 /* we have only one long running ipassist, since we can ensure 2123 process context of this command we can sleep */ 2124 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2125 if ((cmd->hdr.command == IPA_CMD_SETIP) && 2126 (cmd->hdr.prot_version == QETH_PROT_IPV4)) { 2127 if (!wait_event_timeout(reply->wait_q, 2128 atomic_read(&reply->received), event_timeout)) 2129 goto time_err; 2130 } else { 2131 while (!atomic_read(&reply->received)) { 2132 if (time_after(jiffies, timeout)) 2133 goto time_err; 2134 cpu_relax(); 2135 } 2136 } 2137 2138 if (reply->rc == -EIO) 2139 goto error; 2140 rc = reply->rc; 2141 qeth_put_reply(reply); 2142 return rc; 2143 2144 time_err: 2145 reply->rc = -ETIME; 2146 spin_lock_irqsave(&reply->card->lock, flags); 2147 list_del_init(&reply->list); 2148 spin_unlock_irqrestore(&reply->card->lock, flags); 2149 atomic_inc(&reply->received); 2150 error: 2151 atomic_set(&card->write.irq_pending, 0); 2152 qeth_release_buffer(iob->channel, iob); 2153 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2154 rc = reply->rc; 2155 qeth_put_reply(reply); 2156 return rc; 2157 } 2158 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2159 2160 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2161 unsigned long data) 2162 { 2163 struct qeth_cmd_buffer *iob; 2164 2165 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2166 2167 iob = (struct qeth_cmd_buffer *) data; 2168 memcpy(&card->token.cm_filter_r, 2169 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2170 QETH_MPC_TOKEN_LENGTH); 2171 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2172 return 0; 2173 } 2174 2175 static int qeth_cm_enable(struct qeth_card *card) 2176 { 2177 int rc; 2178 struct qeth_cmd_buffer *iob; 2179 2180 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2181 2182 iob = qeth_wait_for_buffer(&card->write); 2183 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2184 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2185 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2186 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2187 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2188 2189 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2190 qeth_cm_enable_cb, NULL); 2191 return rc; 2192 } 2193 2194 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2195 unsigned long data) 2196 { 2197 2198 struct qeth_cmd_buffer *iob; 2199 2200 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2201 2202 iob = (struct qeth_cmd_buffer *) data; 2203 memcpy(&card->token.cm_connection_r, 2204 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2205 QETH_MPC_TOKEN_LENGTH); 2206 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2207 return 0; 2208 } 2209 2210 static int qeth_cm_setup(struct qeth_card *card) 2211 { 2212 int rc; 2213 struct qeth_cmd_buffer *iob; 2214 2215 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2216 2217 iob = qeth_wait_for_buffer(&card->write); 2218 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2219 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2220 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2221 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2222 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2223 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2224 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2225 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2226 qeth_cm_setup_cb, NULL); 2227 return rc; 2228 2229 } 2230 2231 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2232 { 2233 switch (card->info.type) { 2234 case QETH_CARD_TYPE_UNKNOWN: 2235 return 1500; 2236 case QETH_CARD_TYPE_IQD: 2237 return card->info.max_mtu; 2238 case QETH_CARD_TYPE_OSD: 2239 switch (card->info.link_type) { 2240 case QETH_LINK_TYPE_HSTR: 2241 case QETH_LINK_TYPE_LANE_TR: 2242 return 2000; 2243 default: 2244 return card->options.layer2 ? 1500 : 1492; 2245 } 2246 case QETH_CARD_TYPE_OSM: 2247 case QETH_CARD_TYPE_OSX: 2248 return card->options.layer2 ? 1500 : 1492; 2249 default: 2250 return 1500; 2251 } 2252 } 2253 2254 static inline int qeth_get_mtu_outof_framesize(int framesize) 2255 { 2256 switch (framesize) { 2257 case 0x4000: 2258 return 8192; 2259 case 0x6000: 2260 return 16384; 2261 case 0xa000: 2262 return 32768; 2263 case 0xffff: 2264 return 57344; 2265 default: 2266 return 0; 2267 } 2268 } 2269 2270 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2271 { 2272 switch (card->info.type) { 2273 case QETH_CARD_TYPE_OSD: 2274 case QETH_CARD_TYPE_OSM: 2275 case QETH_CARD_TYPE_OSX: 2276 case QETH_CARD_TYPE_IQD: 2277 return ((mtu >= 576) && 2278 (mtu <= card->info.max_mtu)); 2279 case QETH_CARD_TYPE_OSN: 2280 case QETH_CARD_TYPE_UNKNOWN: 2281 default: 2282 return 1; 2283 } 2284 } 2285 2286 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2287 unsigned long data) 2288 { 2289 2290 __u16 mtu, framesize; 2291 __u16 len; 2292 __u8 link_type; 2293 struct qeth_cmd_buffer *iob; 2294 2295 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2296 2297 iob = (struct qeth_cmd_buffer *) data; 2298 memcpy(&card->token.ulp_filter_r, 2299 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2300 QETH_MPC_TOKEN_LENGTH); 2301 if (card->info.type == QETH_CARD_TYPE_IQD) { 2302 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2303 mtu = qeth_get_mtu_outof_framesize(framesize); 2304 if (!mtu) { 2305 iob->rc = -EINVAL; 2306 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2307 return 0; 2308 } 2309 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2310 /* frame size has changed */ 2311 if (card->dev && 2312 ((card->dev->mtu == card->info.initial_mtu) || 2313 (card->dev->mtu > mtu))) 2314 card->dev->mtu = mtu; 2315 qeth_free_qdio_buffers(card); 2316 } 2317 card->info.initial_mtu = mtu; 2318 card->info.max_mtu = mtu; 2319 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2320 } else { 2321 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2322 iob->data); 2323 card->info.initial_mtu = min(card->info.max_mtu, 2324 qeth_get_initial_mtu_for_card(card)); 2325 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2326 } 2327 2328 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2329 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2330 memcpy(&link_type, 2331 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2332 card->info.link_type = link_type; 2333 } else 2334 card->info.link_type = 0; 2335 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2336 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2337 return 0; 2338 } 2339 2340 static int qeth_ulp_enable(struct qeth_card *card) 2341 { 2342 int rc; 2343 char prot_type; 2344 struct qeth_cmd_buffer *iob; 2345 2346 /*FIXME: trace view callbacks*/ 2347 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2348 2349 iob = qeth_wait_for_buffer(&card->write); 2350 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2351 2352 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2353 (__u8) card->info.portno; 2354 if (card->options.layer2) 2355 if (card->info.type == QETH_CARD_TYPE_OSN) 2356 prot_type = QETH_PROT_OSN2; 2357 else 2358 prot_type = QETH_PROT_LAYER2; 2359 else 2360 prot_type = QETH_PROT_TCPIP; 2361 2362 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2363 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2364 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2365 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2366 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2367 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2368 qeth_ulp_enable_cb, NULL); 2369 return rc; 2370 2371 } 2372 2373 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2374 unsigned long data) 2375 { 2376 struct qeth_cmd_buffer *iob; 2377 2378 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2379 2380 iob = (struct qeth_cmd_buffer *) data; 2381 memcpy(&card->token.ulp_connection_r, 2382 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2383 QETH_MPC_TOKEN_LENGTH); 2384 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2385 3)) { 2386 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2387 dev_err(&card->gdev->dev, "A connection could not be " 2388 "established because of an OLM limit\n"); 2389 iob->rc = -EMLINK; 2390 } 2391 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2392 return 0; 2393 } 2394 2395 static int qeth_ulp_setup(struct qeth_card *card) 2396 { 2397 int rc; 2398 __u16 temp; 2399 struct qeth_cmd_buffer *iob; 2400 struct ccw_dev_id dev_id; 2401 2402 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2403 2404 iob = qeth_wait_for_buffer(&card->write); 2405 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2406 2407 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2408 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2409 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2410 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2411 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2412 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2413 2414 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2415 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2416 temp = (card->info.cula << 8) + card->info.unit_addr2; 2417 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2418 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2419 qeth_ulp_setup_cb, NULL); 2420 return rc; 2421 } 2422 2423 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2424 { 2425 int rc; 2426 struct qeth_qdio_out_buffer *newbuf; 2427 2428 rc = 0; 2429 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2430 if (!newbuf) { 2431 rc = -ENOMEM; 2432 goto out; 2433 } 2434 newbuf->buffer = q->qdio_bufs[bidx]; 2435 skb_queue_head_init(&newbuf->skb_list); 2436 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2437 newbuf->q = q; 2438 newbuf->aob = NULL; 2439 newbuf->next_pending = q->bufs[bidx]; 2440 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2441 q->bufs[bidx] = newbuf; 2442 if (q->bufstates) { 2443 q->bufstates[bidx].user = newbuf; 2444 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2445 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2446 QETH_CARD_TEXT_(q->card, 2, "%lx", 2447 (long) newbuf->next_pending); 2448 } 2449 out: 2450 return rc; 2451 } 2452 2453 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2454 { 2455 if (!q) 2456 return; 2457 2458 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2459 kfree(q); 2460 } 2461 2462 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2463 { 2464 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2465 2466 if (!q) 2467 return NULL; 2468 2469 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2470 kfree(q); 2471 return NULL; 2472 } 2473 return q; 2474 } 2475 2476 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2477 { 2478 int i, j; 2479 2480 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2481 2482 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2483 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2484 return 0; 2485 2486 QETH_DBF_TEXT(SETUP, 2, "inq"); 2487 card->qdio.in_q = qeth_alloc_qdio_queue(); 2488 if (!card->qdio.in_q) 2489 goto out_nomem; 2490 2491 /* inbound buffer pool */ 2492 if (qeth_alloc_buffer_pool(card)) 2493 goto out_freeinq; 2494 2495 /* outbound */ 2496 card->qdio.out_qs = 2497 kzalloc(card->qdio.no_out_queues * 2498 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2499 if (!card->qdio.out_qs) 2500 goto out_freepool; 2501 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2502 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2503 if (!card->qdio.out_qs[i]) 2504 goto out_freeoutq; 2505 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2506 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2507 card->qdio.out_qs[i]->queue_no = i; 2508 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2509 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2510 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2511 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2512 goto out_freeoutqbufs; 2513 } 2514 } 2515 2516 /* completion */ 2517 if (qeth_alloc_cq(card)) 2518 goto out_freeoutq; 2519 2520 return 0; 2521 2522 out_freeoutqbufs: 2523 while (j > 0) { 2524 --j; 2525 kmem_cache_free(qeth_qdio_outbuf_cache, 2526 card->qdio.out_qs[i]->bufs[j]); 2527 card->qdio.out_qs[i]->bufs[j] = NULL; 2528 } 2529 out_freeoutq: 2530 while (i > 0) { 2531 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2532 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2533 } 2534 kfree(card->qdio.out_qs); 2535 card->qdio.out_qs = NULL; 2536 out_freepool: 2537 qeth_free_buffer_pool(card); 2538 out_freeinq: 2539 qeth_free_qdio_queue(card->qdio.in_q); 2540 card->qdio.in_q = NULL; 2541 out_nomem: 2542 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2543 return -ENOMEM; 2544 } 2545 2546 static void qeth_free_qdio_buffers(struct qeth_card *card) 2547 { 2548 int i, j; 2549 2550 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2551 QETH_QDIO_UNINITIALIZED) 2552 return; 2553 2554 qeth_free_cq(card); 2555 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2556 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2557 if (card->qdio.in_q->bufs[j].rx_skb) 2558 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2559 } 2560 qeth_free_qdio_queue(card->qdio.in_q); 2561 card->qdio.in_q = NULL; 2562 /* inbound buffer pool */ 2563 qeth_free_buffer_pool(card); 2564 /* free outbound qdio_qs */ 2565 if (card->qdio.out_qs) { 2566 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2567 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2568 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2569 } 2570 kfree(card->qdio.out_qs); 2571 card->qdio.out_qs = NULL; 2572 } 2573 } 2574 2575 static void qeth_create_qib_param_field(struct qeth_card *card, 2576 char *param_field) 2577 { 2578 2579 param_field[0] = _ascebc['P']; 2580 param_field[1] = _ascebc['C']; 2581 param_field[2] = _ascebc['I']; 2582 param_field[3] = _ascebc['T']; 2583 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2584 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2585 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2586 } 2587 2588 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2589 char *param_field) 2590 { 2591 param_field[16] = _ascebc['B']; 2592 param_field[17] = _ascebc['L']; 2593 param_field[18] = _ascebc['K']; 2594 param_field[19] = _ascebc['T']; 2595 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2596 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2597 *((unsigned int *) (¶m_field[28])) = 2598 card->info.blkt.inter_packet_jumbo; 2599 } 2600 2601 static int qeth_qdio_activate(struct qeth_card *card) 2602 { 2603 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2604 return qdio_activate(CARD_DDEV(card)); 2605 } 2606 2607 static int qeth_dm_act(struct qeth_card *card) 2608 { 2609 int rc; 2610 struct qeth_cmd_buffer *iob; 2611 2612 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2613 2614 iob = qeth_wait_for_buffer(&card->write); 2615 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2616 2617 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2618 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2619 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2620 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2621 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2622 return rc; 2623 } 2624 2625 static int qeth_mpc_initialize(struct qeth_card *card) 2626 { 2627 int rc; 2628 2629 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2630 2631 rc = qeth_issue_next_read(card); 2632 if (rc) { 2633 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2634 return rc; 2635 } 2636 rc = qeth_cm_enable(card); 2637 if (rc) { 2638 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2639 goto out_qdio; 2640 } 2641 rc = qeth_cm_setup(card); 2642 if (rc) { 2643 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2644 goto out_qdio; 2645 } 2646 rc = qeth_ulp_enable(card); 2647 if (rc) { 2648 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2649 goto out_qdio; 2650 } 2651 rc = qeth_ulp_setup(card); 2652 if (rc) { 2653 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2654 goto out_qdio; 2655 } 2656 rc = qeth_alloc_qdio_buffers(card); 2657 if (rc) { 2658 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2659 goto out_qdio; 2660 } 2661 rc = qeth_qdio_establish(card); 2662 if (rc) { 2663 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2664 qeth_free_qdio_buffers(card); 2665 goto out_qdio; 2666 } 2667 rc = qeth_qdio_activate(card); 2668 if (rc) { 2669 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2670 goto out_qdio; 2671 } 2672 rc = qeth_dm_act(card); 2673 if (rc) { 2674 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2675 goto out_qdio; 2676 } 2677 2678 return 0; 2679 out_qdio: 2680 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2681 qdio_free(CARD_DDEV(card)); 2682 return rc; 2683 } 2684 2685 void qeth_print_status_message(struct qeth_card *card) 2686 { 2687 switch (card->info.type) { 2688 case QETH_CARD_TYPE_OSD: 2689 case QETH_CARD_TYPE_OSM: 2690 case QETH_CARD_TYPE_OSX: 2691 /* VM will use a non-zero first character 2692 * to indicate a HiperSockets like reporting 2693 * of the level OSA sets the first character to zero 2694 * */ 2695 if (!card->info.mcl_level[0]) { 2696 sprintf(card->info.mcl_level, "%02x%02x", 2697 card->info.mcl_level[2], 2698 card->info.mcl_level[3]); 2699 break; 2700 } 2701 /* fallthrough */ 2702 case QETH_CARD_TYPE_IQD: 2703 if ((card->info.guestlan) || 2704 (card->info.mcl_level[0] & 0x80)) { 2705 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2706 card->info.mcl_level[0]]; 2707 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2708 card->info.mcl_level[1]]; 2709 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2710 card->info.mcl_level[2]]; 2711 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2712 card->info.mcl_level[3]]; 2713 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2714 } 2715 break; 2716 default: 2717 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2718 } 2719 dev_info(&card->gdev->dev, 2720 "Device is a%s card%s%s%s\nwith link type %s.\n", 2721 qeth_get_cardname(card), 2722 (card->info.mcl_level[0]) ? " (level: " : "", 2723 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2724 (card->info.mcl_level[0]) ? ")" : "", 2725 qeth_get_cardname_short(card)); 2726 } 2727 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2728 2729 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2730 { 2731 struct qeth_buffer_pool_entry *entry; 2732 2733 QETH_CARD_TEXT(card, 5, "inwrklst"); 2734 2735 list_for_each_entry(entry, 2736 &card->qdio.init_pool.entry_list, init_list) { 2737 qeth_put_buffer_pool_entry(card, entry); 2738 } 2739 } 2740 2741 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2742 struct qeth_card *card) 2743 { 2744 struct list_head *plh; 2745 struct qeth_buffer_pool_entry *entry; 2746 int i, free; 2747 struct page *page; 2748 2749 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2750 return NULL; 2751 2752 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2753 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2754 free = 1; 2755 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2756 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2757 free = 0; 2758 break; 2759 } 2760 } 2761 if (free) { 2762 list_del_init(&entry->list); 2763 return entry; 2764 } 2765 } 2766 2767 /* no free buffer in pool so take first one and swap pages */ 2768 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2769 struct qeth_buffer_pool_entry, list); 2770 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2771 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2772 page = alloc_page(GFP_ATOMIC); 2773 if (!page) { 2774 return NULL; 2775 } else { 2776 free_page((unsigned long)entry->elements[i]); 2777 entry->elements[i] = page_address(page); 2778 if (card->options.performance_stats) 2779 card->perf_stats.sg_alloc_page_rx++; 2780 } 2781 } 2782 } 2783 list_del_init(&entry->list); 2784 return entry; 2785 } 2786 2787 static int qeth_init_input_buffer(struct qeth_card *card, 2788 struct qeth_qdio_buffer *buf) 2789 { 2790 struct qeth_buffer_pool_entry *pool_entry; 2791 int i; 2792 2793 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2794 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 2795 if (!buf->rx_skb) 2796 return 1; 2797 } 2798 2799 pool_entry = qeth_find_free_buffer_pool_entry(card); 2800 if (!pool_entry) 2801 return 1; 2802 2803 /* 2804 * since the buffer is accessed only from the input_tasklet 2805 * there shouldn't be a need to synchronize; also, since we use 2806 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2807 * buffers 2808 */ 2809 2810 buf->pool_entry = pool_entry; 2811 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2812 buf->buffer->element[i].length = PAGE_SIZE; 2813 buf->buffer->element[i].addr = pool_entry->elements[i]; 2814 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2815 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2816 else 2817 buf->buffer->element[i].eflags = 0; 2818 buf->buffer->element[i].sflags = 0; 2819 } 2820 return 0; 2821 } 2822 2823 int qeth_init_qdio_queues(struct qeth_card *card) 2824 { 2825 int i, j; 2826 int rc; 2827 2828 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2829 2830 /* inbound queue */ 2831 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, 2832 QDIO_MAX_BUFFERS_PER_Q); 2833 qeth_initialize_working_pool_list(card); 2834 /*give only as many buffers to hardware as we have buffer pool entries*/ 2835 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2836 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2837 card->qdio.in_q->next_buf_to_init = 2838 card->qdio.in_buf_pool.buf_count - 1; 2839 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2840 card->qdio.in_buf_pool.buf_count - 1); 2841 if (rc) { 2842 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2843 return rc; 2844 } 2845 2846 /* completion */ 2847 rc = qeth_cq_init(card); 2848 if (rc) { 2849 return rc; 2850 } 2851 2852 /* outbound queue */ 2853 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2854 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2855 QDIO_MAX_BUFFERS_PER_Q); 2856 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2857 qeth_clear_output_buffer(card->qdio.out_qs[i], 2858 card->qdio.out_qs[i]->bufs[j], 2859 QETH_QDIO_BUF_EMPTY); 2860 } 2861 card->qdio.out_qs[i]->card = card; 2862 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2863 card->qdio.out_qs[i]->do_pack = 0; 2864 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2865 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2866 atomic_set(&card->qdio.out_qs[i]->state, 2867 QETH_OUT_Q_UNLOCKED); 2868 } 2869 return 0; 2870 } 2871 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2872 2873 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2874 { 2875 switch (link_type) { 2876 case QETH_LINK_TYPE_HSTR: 2877 return 2; 2878 default: 2879 return 1; 2880 } 2881 } 2882 2883 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2884 struct qeth_ipa_cmd *cmd, __u8 command, 2885 enum qeth_prot_versions prot) 2886 { 2887 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2888 cmd->hdr.command = command; 2889 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2890 cmd->hdr.seqno = card->seqno.ipa; 2891 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2892 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2893 if (card->options.layer2) 2894 cmd->hdr.prim_version_no = 2; 2895 else 2896 cmd->hdr.prim_version_no = 1; 2897 cmd->hdr.param_count = 1; 2898 cmd->hdr.prot_version = prot; 2899 cmd->hdr.ipa_supported = 0; 2900 cmd->hdr.ipa_enabled = 0; 2901 } 2902 2903 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2904 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2905 { 2906 struct qeth_cmd_buffer *iob; 2907 struct qeth_ipa_cmd *cmd; 2908 2909 iob = qeth_get_buffer(&card->write); 2910 if (iob) { 2911 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2912 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2913 } else { 2914 dev_warn(&card->gdev->dev, 2915 "The qeth driver ran out of channel command buffers\n"); 2916 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2917 dev_name(&card->gdev->dev)); 2918 } 2919 2920 return iob; 2921 } 2922 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2923 2924 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2925 char prot_type) 2926 { 2927 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2928 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2929 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2930 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2931 } 2932 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2933 2934 /** 2935 * qeth_send_ipa_cmd() - send an IPA command 2936 * 2937 * See qeth_send_control_data() for explanation of the arguments. 2938 */ 2939 2940 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2941 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2942 unsigned long), 2943 void *reply_param) 2944 { 2945 int rc; 2946 char prot_type; 2947 2948 QETH_CARD_TEXT(card, 4, "sendipa"); 2949 2950 if (card->options.layer2) 2951 if (card->info.type == QETH_CARD_TYPE_OSN) 2952 prot_type = QETH_PROT_OSN2; 2953 else 2954 prot_type = QETH_PROT_LAYER2; 2955 else 2956 prot_type = QETH_PROT_TCPIP; 2957 qeth_prepare_ipa_cmd(card, iob, prot_type); 2958 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2959 iob, reply_cb, reply_param); 2960 if (rc == -ETIME) { 2961 qeth_clear_ipacmd_list(card); 2962 qeth_schedule_recovery(card); 2963 } 2964 return rc; 2965 } 2966 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2967 2968 static int qeth_send_startlan(struct qeth_card *card) 2969 { 2970 int rc; 2971 struct qeth_cmd_buffer *iob; 2972 2973 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2974 2975 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2976 if (!iob) 2977 return -ENOMEM; 2978 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2979 return rc; 2980 } 2981 2982 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 2983 struct qeth_reply *reply, unsigned long data) 2984 { 2985 struct qeth_ipa_cmd *cmd; 2986 2987 QETH_CARD_TEXT(card, 4, "defadpcb"); 2988 2989 cmd = (struct qeth_ipa_cmd *) data; 2990 if (cmd->hdr.return_code == 0) 2991 cmd->hdr.return_code = 2992 cmd->data.setadapterparms.hdr.return_code; 2993 return 0; 2994 } 2995 2996 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2997 struct qeth_reply *reply, unsigned long data) 2998 { 2999 struct qeth_ipa_cmd *cmd; 3000 3001 QETH_CARD_TEXT(card, 3, "quyadpcb"); 3002 3003 cmd = (struct qeth_ipa_cmd *) data; 3004 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 3005 card->info.link_type = 3006 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 3007 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 3008 } 3009 card->options.adp.supported_funcs = 3010 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 3011 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 3012 } 3013 3014 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 3015 __u32 command, __u32 cmdlen) 3016 { 3017 struct qeth_cmd_buffer *iob; 3018 struct qeth_ipa_cmd *cmd; 3019 3020 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3021 QETH_PROT_IPV4); 3022 if (iob) { 3023 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3024 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3025 cmd->data.setadapterparms.hdr.command_code = command; 3026 cmd->data.setadapterparms.hdr.used_total = 1; 3027 cmd->data.setadapterparms.hdr.seq_no = 1; 3028 } 3029 3030 return iob; 3031 } 3032 3033 int qeth_query_setadapterparms(struct qeth_card *card) 3034 { 3035 int rc; 3036 struct qeth_cmd_buffer *iob; 3037 3038 QETH_CARD_TEXT(card, 3, "queryadp"); 3039 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3040 sizeof(struct qeth_ipacmd_setadpparms)); 3041 if (!iob) 3042 return -ENOMEM; 3043 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3044 return rc; 3045 } 3046 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3047 3048 static int qeth_query_ipassists_cb(struct qeth_card *card, 3049 struct qeth_reply *reply, unsigned long data) 3050 { 3051 struct qeth_ipa_cmd *cmd; 3052 3053 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3054 3055 cmd = (struct qeth_ipa_cmd *) data; 3056 3057 switch (cmd->hdr.return_code) { 3058 case IPA_RC_NOTSUPP: 3059 case IPA_RC_L2_UNSUPPORTED_CMD: 3060 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3061 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3062 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3063 return -0; 3064 default: 3065 if (cmd->hdr.return_code) { 3066 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3067 "rc=%d\n", 3068 dev_name(&card->gdev->dev), 3069 cmd->hdr.return_code); 3070 return 0; 3071 } 3072 } 3073 3074 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3075 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3076 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3077 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3078 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3079 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3080 } else 3081 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3082 "\n", dev_name(&card->gdev->dev)); 3083 return 0; 3084 } 3085 3086 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3087 { 3088 int rc; 3089 struct qeth_cmd_buffer *iob; 3090 3091 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3092 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3093 if (!iob) 3094 return -ENOMEM; 3095 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3096 return rc; 3097 } 3098 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3099 3100 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3101 struct qeth_reply *reply, unsigned long data) 3102 { 3103 struct qeth_ipa_cmd *cmd; 3104 struct qeth_switch_info *sw_info; 3105 struct qeth_query_switch_attributes *attrs; 3106 3107 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3108 cmd = (struct qeth_ipa_cmd *) data; 3109 sw_info = (struct qeth_switch_info *)reply->param; 3110 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3111 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3112 sw_info->capabilities = attrs->capabilities; 3113 sw_info->settings = attrs->settings; 3114 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3115 sw_info->settings); 3116 } 3117 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3118 3119 return 0; 3120 } 3121 3122 int qeth_query_switch_attributes(struct qeth_card *card, 3123 struct qeth_switch_info *sw_info) 3124 { 3125 struct qeth_cmd_buffer *iob; 3126 3127 QETH_CARD_TEXT(card, 2, "qswiattr"); 3128 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3129 return -EOPNOTSUPP; 3130 if (!netif_carrier_ok(card->dev)) 3131 return -ENOMEDIUM; 3132 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3133 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3134 if (!iob) 3135 return -ENOMEM; 3136 return qeth_send_ipa_cmd(card, iob, 3137 qeth_query_switch_attributes_cb, sw_info); 3138 } 3139 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3140 3141 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3142 struct qeth_reply *reply, unsigned long data) 3143 { 3144 struct qeth_ipa_cmd *cmd; 3145 __u16 rc; 3146 3147 cmd = (struct qeth_ipa_cmd *)data; 3148 rc = cmd->hdr.return_code; 3149 if (rc) 3150 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3151 else 3152 card->info.diagass_support = cmd->data.diagass.ext; 3153 return 0; 3154 } 3155 3156 static int qeth_query_setdiagass(struct qeth_card *card) 3157 { 3158 struct qeth_cmd_buffer *iob; 3159 struct qeth_ipa_cmd *cmd; 3160 3161 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3162 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3163 if (!iob) 3164 return -ENOMEM; 3165 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3166 cmd->data.diagass.subcmd_len = 16; 3167 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3168 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3169 } 3170 3171 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3172 { 3173 unsigned long info = get_zeroed_page(GFP_KERNEL); 3174 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3175 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3176 struct ccw_dev_id ccwid; 3177 int level; 3178 3179 tid->chpid = card->info.chpid; 3180 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3181 tid->ssid = ccwid.ssid; 3182 tid->devno = ccwid.devno; 3183 if (!info) 3184 return; 3185 level = stsi(NULL, 0, 0, 0); 3186 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3187 tid->lparnr = info222->lpar_number; 3188 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3189 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3190 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3191 } 3192 free_page(info); 3193 return; 3194 } 3195 3196 static int qeth_hw_trap_cb(struct qeth_card *card, 3197 struct qeth_reply *reply, unsigned long data) 3198 { 3199 struct qeth_ipa_cmd *cmd; 3200 __u16 rc; 3201 3202 cmd = (struct qeth_ipa_cmd *)data; 3203 rc = cmd->hdr.return_code; 3204 if (rc) 3205 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3206 return 0; 3207 } 3208 3209 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3210 { 3211 struct qeth_cmd_buffer *iob; 3212 struct qeth_ipa_cmd *cmd; 3213 3214 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3215 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3216 if (!iob) 3217 return -ENOMEM; 3218 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3219 cmd->data.diagass.subcmd_len = 80; 3220 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3221 cmd->data.diagass.type = 1; 3222 cmd->data.diagass.action = action; 3223 switch (action) { 3224 case QETH_DIAGS_TRAP_ARM: 3225 cmd->data.diagass.options = 0x0003; 3226 cmd->data.diagass.ext = 0x00010000 + 3227 sizeof(struct qeth_trap_id); 3228 qeth_get_trap_id(card, 3229 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3230 break; 3231 case QETH_DIAGS_TRAP_DISARM: 3232 cmd->data.diagass.options = 0x0001; 3233 break; 3234 case QETH_DIAGS_TRAP_CAPTURE: 3235 break; 3236 } 3237 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3238 } 3239 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3240 3241 static int qeth_check_qdio_errors(struct qeth_card *card, 3242 struct qdio_buffer *buf, 3243 unsigned int qdio_error, 3244 const char *dbftext) 3245 { 3246 if (qdio_error) { 3247 QETH_CARD_TEXT(card, 2, dbftext); 3248 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3249 buf->element[15].sflags); 3250 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3251 buf->element[14].sflags); 3252 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3253 if ((buf->element[15].sflags) == 0x12) { 3254 card->stats.rx_dropped++; 3255 return 0; 3256 } else 3257 return 1; 3258 } 3259 return 0; 3260 } 3261 3262 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3263 { 3264 struct qeth_qdio_q *queue = card->qdio.in_q; 3265 struct list_head *lh; 3266 int count; 3267 int i; 3268 int rc; 3269 int newcount = 0; 3270 3271 count = (index < queue->next_buf_to_init)? 3272 card->qdio.in_buf_pool.buf_count - 3273 (queue->next_buf_to_init - index) : 3274 card->qdio.in_buf_pool.buf_count - 3275 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3276 /* only requeue at a certain threshold to avoid SIGAs */ 3277 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3278 for (i = queue->next_buf_to_init; 3279 i < queue->next_buf_to_init + count; ++i) { 3280 if (qeth_init_input_buffer(card, 3281 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3282 break; 3283 } else { 3284 newcount++; 3285 } 3286 } 3287 3288 if (newcount < count) { 3289 /* we are in memory shortage so we switch back to 3290 traditional skb allocation and drop packages */ 3291 atomic_set(&card->force_alloc_skb, 3); 3292 count = newcount; 3293 } else { 3294 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3295 } 3296 3297 if (!count) { 3298 i = 0; 3299 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3300 i++; 3301 if (i == card->qdio.in_buf_pool.buf_count) { 3302 QETH_CARD_TEXT(card, 2, "qsarbw"); 3303 card->reclaim_index = index; 3304 schedule_delayed_work( 3305 &card->buffer_reclaim_work, 3306 QETH_RECLAIM_WORK_TIME); 3307 } 3308 return; 3309 } 3310 3311 /* 3312 * according to old code it should be avoided to requeue all 3313 * 128 buffers in order to benefit from PCI avoidance. 3314 * this function keeps at least one buffer (the buffer at 3315 * 'index') un-requeued -> this buffer is the first buffer that 3316 * will be requeued the next time 3317 */ 3318 if (card->options.performance_stats) { 3319 card->perf_stats.inbound_do_qdio_cnt++; 3320 card->perf_stats.inbound_do_qdio_start_time = 3321 qeth_get_micros(); 3322 } 3323 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3324 queue->next_buf_to_init, count); 3325 if (card->options.performance_stats) 3326 card->perf_stats.inbound_do_qdio_time += 3327 qeth_get_micros() - 3328 card->perf_stats.inbound_do_qdio_start_time; 3329 if (rc) { 3330 QETH_CARD_TEXT(card, 2, "qinberr"); 3331 } 3332 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3333 QDIO_MAX_BUFFERS_PER_Q; 3334 } 3335 } 3336 3337 static void qeth_buffer_reclaim_work(struct work_struct *work) 3338 { 3339 struct qeth_card *card = container_of(work, struct qeth_card, 3340 buffer_reclaim_work.work); 3341 3342 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3343 qeth_queue_input_buffer(card, card->reclaim_index); 3344 } 3345 3346 static void qeth_handle_send_error(struct qeth_card *card, 3347 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3348 { 3349 int sbalf15 = buffer->buffer->element[15].sflags; 3350 3351 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3352 if (card->info.type == QETH_CARD_TYPE_IQD) { 3353 if (sbalf15 == 0) { 3354 qdio_err = 0; 3355 } else { 3356 qdio_err = 1; 3357 } 3358 } 3359 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3360 3361 if (!qdio_err) 3362 return; 3363 3364 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3365 return; 3366 3367 QETH_CARD_TEXT(card, 1, "lnkfail"); 3368 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3369 (u16)qdio_err, (u8)sbalf15); 3370 } 3371 3372 /** 3373 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3374 * @queue: queue to check for packing buffer 3375 * 3376 * Returns number of buffers that were prepared for flush. 3377 */ 3378 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3379 { 3380 struct qeth_qdio_out_buffer *buffer; 3381 3382 buffer = queue->bufs[queue->next_buf_to_fill]; 3383 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3384 (buffer->next_element_to_fill > 0)) { 3385 /* it's a packing buffer */ 3386 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3387 queue->next_buf_to_fill = 3388 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3389 return 1; 3390 } 3391 return 0; 3392 } 3393 3394 /* 3395 * Switched to packing state if the number of used buffers on a queue 3396 * reaches a certain limit. 3397 */ 3398 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3399 { 3400 if (!queue->do_pack) { 3401 if (atomic_read(&queue->used_buffers) 3402 >= QETH_HIGH_WATERMARK_PACK){ 3403 /* switch non-PACKING -> PACKING */ 3404 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3405 if (queue->card->options.performance_stats) 3406 queue->card->perf_stats.sc_dp_p++; 3407 queue->do_pack = 1; 3408 } 3409 } 3410 } 3411 3412 /* 3413 * Switches from packing to non-packing mode. If there is a packing 3414 * buffer on the queue this buffer will be prepared to be flushed. 3415 * In that case 1 is returned to inform the caller. If no buffer 3416 * has to be flushed, zero is returned. 3417 */ 3418 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3419 { 3420 if (queue->do_pack) { 3421 if (atomic_read(&queue->used_buffers) 3422 <= QETH_LOW_WATERMARK_PACK) { 3423 /* switch PACKING -> non-PACKING */ 3424 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3425 if (queue->card->options.performance_stats) 3426 queue->card->perf_stats.sc_p_dp++; 3427 queue->do_pack = 0; 3428 return qeth_prep_flush_pack_buffer(queue); 3429 } 3430 } 3431 return 0; 3432 } 3433 3434 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3435 int count) 3436 { 3437 struct qeth_qdio_out_buffer *buf; 3438 int rc; 3439 int i; 3440 unsigned int qdio_flags; 3441 3442 for (i = index; i < index + count; ++i) { 3443 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3444 buf = queue->bufs[bidx]; 3445 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3446 SBAL_EFLAGS_LAST_ENTRY; 3447 3448 if (queue->bufstates) 3449 queue->bufstates[bidx].user = buf; 3450 3451 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3452 continue; 3453 3454 if (!queue->do_pack) { 3455 if ((atomic_read(&queue->used_buffers) >= 3456 (QETH_HIGH_WATERMARK_PACK - 3457 QETH_WATERMARK_PACK_FUZZ)) && 3458 !atomic_read(&queue->set_pci_flags_count)) { 3459 /* it's likely that we'll go to packing 3460 * mode soon */ 3461 atomic_inc(&queue->set_pci_flags_count); 3462 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3463 } 3464 } else { 3465 if (!atomic_read(&queue->set_pci_flags_count)) { 3466 /* 3467 * there's no outstanding PCI any more, so we 3468 * have to request a PCI to be sure the the PCI 3469 * will wake at some time in the future then we 3470 * can flush packed buffers that might still be 3471 * hanging around, which can happen if no 3472 * further send was requested by the stack 3473 */ 3474 atomic_inc(&queue->set_pci_flags_count); 3475 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3476 } 3477 } 3478 } 3479 3480 netif_trans_update(queue->card->dev); 3481 if (queue->card->options.performance_stats) { 3482 queue->card->perf_stats.outbound_do_qdio_cnt++; 3483 queue->card->perf_stats.outbound_do_qdio_start_time = 3484 qeth_get_micros(); 3485 } 3486 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3487 if (atomic_read(&queue->set_pci_flags_count)) 3488 qdio_flags |= QDIO_FLAG_PCI_OUT; 3489 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3490 queue->queue_no, index, count); 3491 if (queue->card->options.performance_stats) 3492 queue->card->perf_stats.outbound_do_qdio_time += 3493 qeth_get_micros() - 3494 queue->card->perf_stats.outbound_do_qdio_start_time; 3495 atomic_add(count, &queue->used_buffers); 3496 if (rc) { 3497 queue->card->stats.tx_errors += count; 3498 /* ignore temporary SIGA errors without busy condition */ 3499 if (rc == -ENOBUFS) 3500 return; 3501 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3502 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3503 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3504 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3505 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3506 3507 /* this must not happen under normal circumstances. if it 3508 * happens something is really wrong -> recover */ 3509 qeth_schedule_recovery(queue->card); 3510 return; 3511 } 3512 if (queue->card->options.performance_stats) 3513 queue->card->perf_stats.bufs_sent += count; 3514 } 3515 3516 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3517 { 3518 int index; 3519 int flush_cnt = 0; 3520 int q_was_packing = 0; 3521 3522 /* 3523 * check if weed have to switch to non-packing mode or if 3524 * we have to get a pci flag out on the queue 3525 */ 3526 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3527 !atomic_read(&queue->set_pci_flags_count)) { 3528 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3529 QETH_OUT_Q_UNLOCKED) { 3530 /* 3531 * If we get in here, there was no action in 3532 * do_send_packet. So, we check if there is a 3533 * packing buffer to be flushed here. 3534 */ 3535 netif_stop_queue(queue->card->dev); 3536 index = queue->next_buf_to_fill; 3537 q_was_packing = queue->do_pack; 3538 /* queue->do_pack may change */ 3539 barrier(); 3540 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3541 if (!flush_cnt && 3542 !atomic_read(&queue->set_pci_flags_count)) 3543 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3544 if (queue->card->options.performance_stats && 3545 q_was_packing) 3546 queue->card->perf_stats.bufs_sent_pack += 3547 flush_cnt; 3548 if (flush_cnt) 3549 qeth_flush_buffers(queue, index, flush_cnt); 3550 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3551 } 3552 } 3553 } 3554 3555 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3556 unsigned long card_ptr) 3557 { 3558 struct qeth_card *card = (struct qeth_card *)card_ptr; 3559 3560 if (card->dev && (card->dev->flags & IFF_UP)) 3561 napi_schedule(&card->napi); 3562 } 3563 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3564 3565 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3566 { 3567 int rc; 3568 3569 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3570 rc = -1; 3571 goto out; 3572 } else { 3573 if (card->options.cq == cq) { 3574 rc = 0; 3575 goto out; 3576 } 3577 3578 if (card->state != CARD_STATE_DOWN && 3579 card->state != CARD_STATE_RECOVER) { 3580 rc = -1; 3581 goto out; 3582 } 3583 3584 qeth_free_qdio_buffers(card); 3585 card->options.cq = cq; 3586 rc = 0; 3587 } 3588 out: 3589 return rc; 3590 3591 } 3592 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3593 3594 3595 static void qeth_qdio_cq_handler(struct qeth_card *card, 3596 unsigned int qdio_err, 3597 unsigned int queue, int first_element, int count) { 3598 struct qeth_qdio_q *cq = card->qdio.c_q; 3599 int i; 3600 int rc; 3601 3602 if (!qeth_is_cq(card, queue)) 3603 goto out; 3604 3605 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3606 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3607 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3608 3609 if (qdio_err) { 3610 netif_stop_queue(card->dev); 3611 qeth_schedule_recovery(card); 3612 goto out; 3613 } 3614 3615 if (card->options.performance_stats) { 3616 card->perf_stats.cq_cnt++; 3617 card->perf_stats.cq_start_time = qeth_get_micros(); 3618 } 3619 3620 for (i = first_element; i < first_element + count; ++i) { 3621 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3622 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3623 int e; 3624 3625 e = 0; 3626 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3627 buffer->element[e].addr) { 3628 unsigned long phys_aob_addr; 3629 3630 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3631 qeth_qdio_handle_aob(card, phys_aob_addr); 3632 buffer->element[e].addr = NULL; 3633 buffer->element[e].eflags = 0; 3634 buffer->element[e].sflags = 0; 3635 buffer->element[e].length = 0; 3636 3637 ++e; 3638 } 3639 3640 buffer->element[15].eflags = 0; 3641 buffer->element[15].sflags = 0; 3642 } 3643 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3644 card->qdio.c_q->next_buf_to_init, 3645 count); 3646 if (rc) { 3647 dev_warn(&card->gdev->dev, 3648 "QDIO reported an error, rc=%i\n", rc); 3649 QETH_CARD_TEXT(card, 2, "qcqherr"); 3650 } 3651 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3652 + count) % QDIO_MAX_BUFFERS_PER_Q; 3653 3654 netif_wake_queue(card->dev); 3655 3656 if (card->options.performance_stats) { 3657 int delta_t = qeth_get_micros(); 3658 delta_t -= card->perf_stats.cq_start_time; 3659 card->perf_stats.cq_time += delta_t; 3660 } 3661 out: 3662 return; 3663 } 3664 3665 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3666 unsigned int queue, int first_elem, int count, 3667 unsigned long card_ptr) 3668 { 3669 struct qeth_card *card = (struct qeth_card *)card_ptr; 3670 3671 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3672 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3673 3674 if (qeth_is_cq(card, queue)) 3675 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3676 else if (qdio_err) 3677 qeth_schedule_recovery(card); 3678 3679 3680 } 3681 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3682 3683 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3684 unsigned int qdio_error, int __queue, int first_element, 3685 int count, unsigned long card_ptr) 3686 { 3687 struct qeth_card *card = (struct qeth_card *) card_ptr; 3688 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3689 struct qeth_qdio_out_buffer *buffer; 3690 int i; 3691 3692 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3693 if (qdio_error & QDIO_ERROR_FATAL) { 3694 QETH_CARD_TEXT(card, 2, "achkcond"); 3695 netif_stop_queue(card->dev); 3696 qeth_schedule_recovery(card); 3697 return; 3698 } 3699 if (card->options.performance_stats) { 3700 card->perf_stats.outbound_handler_cnt++; 3701 card->perf_stats.outbound_handler_start_time = 3702 qeth_get_micros(); 3703 } 3704 for (i = first_element; i < (first_element + count); ++i) { 3705 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3706 buffer = queue->bufs[bidx]; 3707 qeth_handle_send_error(card, buffer, qdio_error); 3708 3709 if (queue->bufstates && 3710 (queue->bufstates[bidx].flags & 3711 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3712 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3713 3714 if (atomic_cmpxchg(&buffer->state, 3715 QETH_QDIO_BUF_PRIMED, 3716 QETH_QDIO_BUF_PENDING) == 3717 QETH_QDIO_BUF_PRIMED) { 3718 qeth_notify_skbs(queue, buffer, 3719 TX_NOTIFY_PENDING); 3720 } 3721 buffer->aob = queue->bufstates[bidx].aob; 3722 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3723 QETH_CARD_TEXT(queue->card, 5, "aob"); 3724 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3725 virt_to_phys(buffer->aob)); 3726 if (qeth_init_qdio_out_buf(queue, bidx)) { 3727 QETH_CARD_TEXT(card, 2, "outofbuf"); 3728 qeth_schedule_recovery(card); 3729 } 3730 } else { 3731 if (card->options.cq == QETH_CQ_ENABLED) { 3732 enum iucv_tx_notify n; 3733 3734 n = qeth_compute_cq_notification( 3735 buffer->buffer->element[15].sflags, 0); 3736 qeth_notify_skbs(queue, buffer, n); 3737 } 3738 3739 qeth_clear_output_buffer(queue, buffer, 3740 QETH_QDIO_BUF_EMPTY); 3741 } 3742 qeth_cleanup_handled_pending(queue, bidx, 0); 3743 } 3744 atomic_sub(count, &queue->used_buffers); 3745 /* check if we need to do something on this outbound queue */ 3746 if (card->info.type != QETH_CARD_TYPE_IQD) 3747 qeth_check_outbound_queue(queue); 3748 3749 netif_wake_queue(queue->card->dev); 3750 if (card->options.performance_stats) 3751 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3752 card->perf_stats.outbound_handler_start_time; 3753 } 3754 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3755 3756 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3757 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3758 { 3759 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3760 return 2; 3761 return queue_num; 3762 } 3763 3764 /** 3765 * Note: Function assumes that we have 4 outbound queues. 3766 */ 3767 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3768 int ipv, int cast_type) 3769 { 3770 __be16 *tci; 3771 u8 tos; 3772 3773 if (cast_type && card->info.is_multicast_different) 3774 return card->info.is_multicast_different & 3775 (card->qdio.no_out_queues - 1); 3776 3777 switch (card->qdio.do_prio_queueing) { 3778 case QETH_PRIO_Q_ING_TOS: 3779 case QETH_PRIO_Q_ING_PREC: 3780 switch (ipv) { 3781 case 4: 3782 tos = ipv4_get_dsfield(ip_hdr(skb)); 3783 break; 3784 case 6: 3785 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3786 break; 3787 default: 3788 return card->qdio.default_out_queue; 3789 } 3790 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3791 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3792 if (tos & IPTOS_MINCOST) 3793 return qeth_cut_iqd_prio(card, 3); 3794 if (tos & IPTOS_RELIABILITY) 3795 return 2; 3796 if (tos & IPTOS_THROUGHPUT) 3797 return 1; 3798 if (tos & IPTOS_LOWDELAY) 3799 return 0; 3800 break; 3801 case QETH_PRIO_Q_ING_SKB: 3802 if (skb->priority > 5) 3803 return 0; 3804 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3805 case QETH_PRIO_Q_ING_VLAN: 3806 tci = &((struct ethhdr *)skb->data)->h_proto; 3807 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3808 return qeth_cut_iqd_prio(card, 3809 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3810 break; 3811 default: 3812 break; 3813 } 3814 return card->qdio.default_out_queue; 3815 } 3816 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3817 3818 /** 3819 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3820 * @skb: SKB address 3821 * 3822 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3823 * fragmented part of the SKB. Returns zero for linear SKB. 3824 */ 3825 int qeth_get_elements_for_frags(struct sk_buff *skb) 3826 { 3827 int cnt, elements = 0; 3828 3829 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3830 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3831 3832 elements += qeth_get_elements_for_range( 3833 (addr_t)skb_frag_address(frag), 3834 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3835 } 3836 return elements; 3837 } 3838 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3839 3840 /** 3841 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3842 * @card: qeth card structure, to check max. elems. 3843 * @skb: SKB address 3844 * @extra_elems: extra elems needed, to check against max. 3845 * @data_offset: range starts at skb->data + data_offset 3846 * 3847 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3848 * skb data, including linear part and fragments. Checks if the result plus 3849 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3850 * Note: extra_elems is not included in the returned result. 3851 */ 3852 int qeth_get_elements_no(struct qeth_card *card, 3853 struct sk_buff *skb, int extra_elems, int data_offset) 3854 { 3855 int elements = qeth_get_elements_for_range( 3856 (addr_t)skb->data + data_offset, 3857 (addr_t)skb->data + skb_headlen(skb)) + 3858 qeth_get_elements_for_frags(skb); 3859 3860 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3861 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3862 "(Number=%d / Length=%d). Discarded.\n", 3863 elements + extra_elems, skb->len); 3864 return 0; 3865 } 3866 return elements; 3867 } 3868 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3869 3870 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3871 { 3872 int hroom, inpage, rest; 3873 3874 if (((unsigned long)skb->data & PAGE_MASK) != 3875 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3876 hroom = skb_headroom(skb); 3877 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3878 rest = len - inpage; 3879 if (rest > hroom) 3880 return 1; 3881 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3882 skb->data -= rest; 3883 skb->tail -= rest; 3884 *hdr = (struct qeth_hdr *)skb->data; 3885 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3886 } 3887 return 0; 3888 } 3889 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3890 3891 static inline void __qeth_fill_buffer(struct sk_buff *skb, 3892 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, 3893 int offset) 3894 { 3895 int length = skb_headlen(skb); 3896 int length_here; 3897 int element; 3898 char *data; 3899 int first_lap, cnt; 3900 struct skb_frag_struct *frag; 3901 3902 element = *next_element_to_fill; 3903 data = skb->data; 3904 first_lap = (is_tso == 0 ? 1 : 0); 3905 3906 if (offset >= 0) { 3907 data = skb->data + offset; 3908 length -= offset; 3909 first_lap = 0; 3910 } 3911 3912 while (length > 0) { 3913 /* length_here is the remaining amount of data in this page */ 3914 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3915 if (length < length_here) 3916 length_here = length; 3917 3918 buffer->element[element].addr = data; 3919 buffer->element[element].length = length_here; 3920 length -= length_here; 3921 if (!length) { 3922 if (first_lap) 3923 if (skb_shinfo(skb)->nr_frags) 3924 buffer->element[element].eflags = 3925 SBAL_EFLAGS_FIRST_FRAG; 3926 else 3927 buffer->element[element].eflags = 0; 3928 else 3929 buffer->element[element].eflags = 3930 SBAL_EFLAGS_MIDDLE_FRAG; 3931 } else { 3932 if (first_lap) 3933 buffer->element[element].eflags = 3934 SBAL_EFLAGS_FIRST_FRAG; 3935 else 3936 buffer->element[element].eflags = 3937 SBAL_EFLAGS_MIDDLE_FRAG; 3938 } 3939 data += length_here; 3940 element++; 3941 first_lap = 0; 3942 } 3943 3944 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3945 frag = &skb_shinfo(skb)->frags[cnt]; 3946 data = (char *)page_to_phys(skb_frag_page(frag)) + 3947 frag->page_offset; 3948 length = frag->size; 3949 while (length > 0) { 3950 length_here = PAGE_SIZE - 3951 ((unsigned long) data % PAGE_SIZE); 3952 if (length < length_here) 3953 length_here = length; 3954 3955 buffer->element[element].addr = data; 3956 buffer->element[element].length = length_here; 3957 buffer->element[element].eflags = 3958 SBAL_EFLAGS_MIDDLE_FRAG; 3959 length -= length_here; 3960 data += length_here; 3961 element++; 3962 } 3963 } 3964 3965 if (buffer->element[element - 1].eflags) 3966 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3967 *next_element_to_fill = element; 3968 } 3969 3970 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 3971 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, 3972 struct qeth_hdr *hdr, int offset, int hd_len) 3973 { 3974 struct qdio_buffer *buffer; 3975 int flush_cnt = 0, hdr_len, large_send = 0; 3976 3977 buffer = buf->buffer; 3978 refcount_inc(&skb->users); 3979 skb_queue_tail(&buf->skb_list, skb); 3980 3981 /*check first on TSO ....*/ 3982 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) { 3983 int element = buf->next_element_to_fill; 3984 3985 hdr_len = sizeof(struct qeth_hdr_tso) + 3986 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len; 3987 /*fill first buffer entry only with header information */ 3988 buffer->element[element].addr = skb->data; 3989 buffer->element[element].length = hdr_len; 3990 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3991 buf->next_element_to_fill++; 3992 skb->data += hdr_len; 3993 skb->len -= hdr_len; 3994 large_send = 1; 3995 } 3996 3997 if (offset >= 0) { 3998 int element = buf->next_element_to_fill; 3999 buffer->element[element].addr = hdr; 4000 buffer->element[element].length = sizeof(struct qeth_hdr) + 4001 hd_len; 4002 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4003 buf->is_header[element] = 1; 4004 buf->next_element_to_fill++; 4005 } 4006 4007 __qeth_fill_buffer(skb, buffer, large_send, 4008 (int *)&buf->next_element_to_fill, offset); 4009 4010 if (!queue->do_pack) { 4011 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4012 /* set state to PRIMED -> will be flushed */ 4013 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4014 flush_cnt = 1; 4015 } else { 4016 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4017 if (queue->card->options.performance_stats) 4018 queue->card->perf_stats.skbs_sent_pack++; 4019 if (buf->next_element_to_fill >= 4020 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4021 /* 4022 * packed buffer if full -> set state PRIMED 4023 * -> will be flushed 4024 */ 4025 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4026 flush_cnt = 1; 4027 } 4028 } 4029 return flush_cnt; 4030 } 4031 4032 int qeth_do_send_packet_fast(struct qeth_card *card, 4033 struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4034 struct qeth_hdr *hdr, int offset, int hd_len) 4035 { 4036 struct qeth_qdio_out_buffer *buffer; 4037 int index; 4038 4039 /* spin until we get the queue ... */ 4040 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4041 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4042 /* ... now we've got the queue */ 4043 index = queue->next_buf_to_fill; 4044 buffer = queue->bufs[queue->next_buf_to_fill]; 4045 /* 4046 * check if buffer is empty to make sure that we do not 'overtake' 4047 * ourselves and try to fill a buffer that is already primed 4048 */ 4049 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4050 goto out; 4051 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % 4052 QDIO_MAX_BUFFERS_PER_Q; 4053 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4054 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4055 qeth_flush_buffers(queue, index, 1); 4056 return 0; 4057 out: 4058 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4059 return -EBUSY; 4060 } 4061 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4062 4063 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4064 struct sk_buff *skb, struct qeth_hdr *hdr, 4065 int elements_needed) 4066 { 4067 struct qeth_qdio_out_buffer *buffer; 4068 int start_index; 4069 int flush_count = 0; 4070 int do_pack = 0; 4071 int tmp; 4072 int rc = 0; 4073 4074 /* spin until we get the queue ... */ 4075 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4076 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4077 start_index = queue->next_buf_to_fill; 4078 buffer = queue->bufs[queue->next_buf_to_fill]; 4079 /* 4080 * check if buffer is empty to make sure that we do not 'overtake' 4081 * ourselves and try to fill a buffer that is already primed 4082 */ 4083 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4084 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4085 return -EBUSY; 4086 } 4087 /* check if we need to switch packing state of this queue */ 4088 qeth_switch_to_packing_if_needed(queue); 4089 if (queue->do_pack) { 4090 do_pack = 1; 4091 /* does packet fit in current buffer? */ 4092 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4093 buffer->next_element_to_fill) < elements_needed) { 4094 /* ... no -> set state PRIMED */ 4095 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4096 flush_count++; 4097 queue->next_buf_to_fill = 4098 (queue->next_buf_to_fill + 1) % 4099 QDIO_MAX_BUFFERS_PER_Q; 4100 buffer = queue->bufs[queue->next_buf_to_fill]; 4101 /* we did a step forward, so check buffer state 4102 * again */ 4103 if (atomic_read(&buffer->state) != 4104 QETH_QDIO_BUF_EMPTY) { 4105 qeth_flush_buffers(queue, start_index, 4106 flush_count); 4107 atomic_set(&queue->state, 4108 QETH_OUT_Q_UNLOCKED); 4109 rc = -EBUSY; 4110 goto out; 4111 } 4112 } 4113 } 4114 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0); 4115 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4116 QDIO_MAX_BUFFERS_PER_Q; 4117 flush_count += tmp; 4118 if (flush_count) 4119 qeth_flush_buffers(queue, start_index, flush_count); 4120 else if (!atomic_read(&queue->set_pci_flags_count)) 4121 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4122 /* 4123 * queue->state will go from LOCKED -> UNLOCKED or from 4124 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4125 * (switch packing state or flush buffer to get another pci flag out). 4126 * In that case we will enter this loop 4127 */ 4128 while (atomic_dec_return(&queue->state)) { 4129 start_index = queue->next_buf_to_fill; 4130 /* check if we can go back to non-packing state */ 4131 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4132 /* 4133 * check if we need to flush a packing buffer to get a pci 4134 * flag out on the queue 4135 */ 4136 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4137 tmp = qeth_prep_flush_pack_buffer(queue); 4138 if (tmp) { 4139 qeth_flush_buffers(queue, start_index, tmp); 4140 flush_count += tmp; 4141 } 4142 } 4143 out: 4144 /* at this point the queue is UNLOCKED again */ 4145 if (queue->card->options.performance_stats && do_pack) 4146 queue->card->perf_stats.bufs_sent_pack += flush_count; 4147 4148 return rc; 4149 } 4150 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4151 4152 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4153 struct qeth_reply *reply, unsigned long data) 4154 { 4155 struct qeth_ipa_cmd *cmd; 4156 struct qeth_ipacmd_setadpparms *setparms; 4157 4158 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4159 4160 cmd = (struct qeth_ipa_cmd *) data; 4161 setparms = &(cmd->data.setadapterparms); 4162 4163 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4164 if (cmd->hdr.return_code) { 4165 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4166 setparms->data.mode = SET_PROMISC_MODE_OFF; 4167 } 4168 card->info.promisc_mode = setparms->data.mode; 4169 return 0; 4170 } 4171 4172 void qeth_setadp_promisc_mode(struct qeth_card *card) 4173 { 4174 enum qeth_ipa_promisc_modes mode; 4175 struct net_device *dev = card->dev; 4176 struct qeth_cmd_buffer *iob; 4177 struct qeth_ipa_cmd *cmd; 4178 4179 QETH_CARD_TEXT(card, 4, "setprom"); 4180 4181 if (((dev->flags & IFF_PROMISC) && 4182 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4183 (!(dev->flags & IFF_PROMISC) && 4184 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4185 return; 4186 mode = SET_PROMISC_MODE_OFF; 4187 if (dev->flags & IFF_PROMISC) 4188 mode = SET_PROMISC_MODE_ON; 4189 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4190 4191 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4192 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4193 if (!iob) 4194 return; 4195 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4196 cmd->data.setadapterparms.data.mode = mode; 4197 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4198 } 4199 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4200 4201 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4202 { 4203 struct qeth_card *card; 4204 char dbf_text[15]; 4205 4206 card = dev->ml_priv; 4207 4208 QETH_CARD_TEXT(card, 4, "chgmtu"); 4209 sprintf(dbf_text, "%8x", new_mtu); 4210 QETH_CARD_TEXT(card, 4, dbf_text); 4211 4212 if (!qeth_mtu_is_valid(card, new_mtu)) 4213 return -EINVAL; 4214 dev->mtu = new_mtu; 4215 return 0; 4216 } 4217 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4218 4219 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4220 { 4221 struct qeth_card *card; 4222 4223 card = dev->ml_priv; 4224 4225 QETH_CARD_TEXT(card, 5, "getstat"); 4226 4227 return &card->stats; 4228 } 4229 EXPORT_SYMBOL_GPL(qeth_get_stats); 4230 4231 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4232 struct qeth_reply *reply, unsigned long data) 4233 { 4234 struct qeth_ipa_cmd *cmd; 4235 4236 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4237 4238 cmd = (struct qeth_ipa_cmd *) data; 4239 if (!card->options.layer2 || 4240 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4241 memcpy(card->dev->dev_addr, 4242 &cmd->data.setadapterparms.data.change_addr.addr, 4243 OSA_ADDR_LEN); 4244 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4245 } 4246 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4247 return 0; 4248 } 4249 4250 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4251 { 4252 int rc; 4253 struct qeth_cmd_buffer *iob; 4254 struct qeth_ipa_cmd *cmd; 4255 4256 QETH_CARD_TEXT(card, 4, "chgmac"); 4257 4258 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4259 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4260 sizeof(struct qeth_change_addr)); 4261 if (!iob) 4262 return -ENOMEM; 4263 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4264 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4265 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; 4266 memcpy(&cmd->data.setadapterparms.data.change_addr.addr, 4267 card->dev->dev_addr, OSA_ADDR_LEN); 4268 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4269 NULL); 4270 return rc; 4271 } 4272 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4273 4274 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4275 struct qeth_reply *reply, unsigned long data) 4276 { 4277 struct qeth_ipa_cmd *cmd; 4278 struct qeth_set_access_ctrl *access_ctrl_req; 4279 int fallback = *(int *)reply->param; 4280 4281 QETH_CARD_TEXT(card, 4, "setaccb"); 4282 4283 cmd = (struct qeth_ipa_cmd *) data; 4284 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4285 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4286 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4287 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4288 cmd->data.setadapterparms.hdr.return_code); 4289 if (cmd->data.setadapterparms.hdr.return_code != 4290 SET_ACCESS_CTRL_RC_SUCCESS) 4291 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4292 card->gdev->dev.kobj.name, 4293 access_ctrl_req->subcmd_code, 4294 cmd->data.setadapterparms.hdr.return_code); 4295 switch (cmd->data.setadapterparms.hdr.return_code) { 4296 case SET_ACCESS_CTRL_RC_SUCCESS: 4297 if (card->options.isolation == ISOLATION_MODE_NONE) { 4298 dev_info(&card->gdev->dev, 4299 "QDIO data connection isolation is deactivated\n"); 4300 } else { 4301 dev_info(&card->gdev->dev, 4302 "QDIO data connection isolation is activated\n"); 4303 } 4304 break; 4305 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4306 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4307 "deactivated\n", dev_name(&card->gdev->dev)); 4308 if (fallback) 4309 card->options.isolation = card->options.prev_isolation; 4310 break; 4311 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4312 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4313 " activated\n", dev_name(&card->gdev->dev)); 4314 if (fallback) 4315 card->options.isolation = card->options.prev_isolation; 4316 break; 4317 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4318 dev_err(&card->gdev->dev, "Adapter does not " 4319 "support QDIO data connection isolation\n"); 4320 break; 4321 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4322 dev_err(&card->gdev->dev, 4323 "Adapter is dedicated. " 4324 "QDIO data connection isolation not supported\n"); 4325 if (fallback) 4326 card->options.isolation = card->options.prev_isolation; 4327 break; 4328 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4329 dev_err(&card->gdev->dev, 4330 "TSO does not permit QDIO data connection isolation\n"); 4331 if (fallback) 4332 card->options.isolation = card->options.prev_isolation; 4333 break; 4334 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4335 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4336 "support reflective relay mode\n"); 4337 if (fallback) 4338 card->options.isolation = card->options.prev_isolation; 4339 break; 4340 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4341 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4342 "enabled at the adjacent switch port"); 4343 if (fallback) 4344 card->options.isolation = card->options.prev_isolation; 4345 break; 4346 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4347 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4348 "at the adjacent switch failed\n"); 4349 break; 4350 default: 4351 /* this should never happen */ 4352 if (fallback) 4353 card->options.isolation = card->options.prev_isolation; 4354 break; 4355 } 4356 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4357 return 0; 4358 } 4359 4360 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4361 enum qeth_ipa_isolation_modes isolation, int fallback) 4362 { 4363 int rc; 4364 struct qeth_cmd_buffer *iob; 4365 struct qeth_ipa_cmd *cmd; 4366 struct qeth_set_access_ctrl *access_ctrl_req; 4367 4368 QETH_CARD_TEXT(card, 4, "setacctl"); 4369 4370 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4371 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4372 4373 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4374 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4375 sizeof(struct qeth_set_access_ctrl)); 4376 if (!iob) 4377 return -ENOMEM; 4378 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4379 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4380 access_ctrl_req->subcmd_code = isolation; 4381 4382 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4383 &fallback); 4384 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4385 return rc; 4386 } 4387 4388 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4389 { 4390 int rc = 0; 4391 4392 QETH_CARD_TEXT(card, 4, "setactlo"); 4393 4394 if ((card->info.type == QETH_CARD_TYPE_OSD || 4395 card->info.type == QETH_CARD_TYPE_OSX) && 4396 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4397 rc = qeth_setadpparms_set_access_ctrl(card, 4398 card->options.isolation, fallback); 4399 if (rc) { 4400 QETH_DBF_MESSAGE(3, 4401 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4402 card->gdev->dev.kobj.name, 4403 rc); 4404 rc = -EOPNOTSUPP; 4405 } 4406 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4407 card->options.isolation = ISOLATION_MODE_NONE; 4408 4409 dev_err(&card->gdev->dev, "Adapter does not " 4410 "support QDIO data connection isolation\n"); 4411 rc = -EOPNOTSUPP; 4412 } 4413 return rc; 4414 } 4415 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4416 4417 void qeth_tx_timeout(struct net_device *dev) 4418 { 4419 struct qeth_card *card; 4420 4421 card = dev->ml_priv; 4422 QETH_CARD_TEXT(card, 4, "txtimeo"); 4423 card->stats.tx_errors++; 4424 qeth_schedule_recovery(card); 4425 } 4426 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4427 4428 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4429 { 4430 struct qeth_card *card = dev->ml_priv; 4431 int rc = 0; 4432 4433 switch (regnum) { 4434 case MII_BMCR: /* Basic mode control register */ 4435 rc = BMCR_FULLDPLX; 4436 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4437 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4438 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4439 rc |= BMCR_SPEED100; 4440 break; 4441 case MII_BMSR: /* Basic mode status register */ 4442 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4443 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4444 BMSR_100BASE4; 4445 break; 4446 case MII_PHYSID1: /* PHYS ID 1 */ 4447 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4448 dev->dev_addr[2]; 4449 rc = (rc >> 5) & 0xFFFF; 4450 break; 4451 case MII_PHYSID2: /* PHYS ID 2 */ 4452 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4453 break; 4454 case MII_ADVERTISE: /* Advertisement control reg */ 4455 rc = ADVERTISE_ALL; 4456 break; 4457 case MII_LPA: /* Link partner ability reg */ 4458 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4459 LPA_100BASE4 | LPA_LPACK; 4460 break; 4461 case MII_EXPANSION: /* Expansion register */ 4462 break; 4463 case MII_DCOUNTER: /* disconnect counter */ 4464 break; 4465 case MII_FCSCOUNTER: /* false carrier counter */ 4466 break; 4467 case MII_NWAYTEST: /* N-way auto-neg test register */ 4468 break; 4469 case MII_RERRCOUNTER: /* rx error counter */ 4470 rc = card->stats.rx_errors; 4471 break; 4472 case MII_SREVISION: /* silicon revision */ 4473 break; 4474 case MII_RESV1: /* reserved 1 */ 4475 break; 4476 case MII_LBRERROR: /* loopback, rx, bypass error */ 4477 break; 4478 case MII_PHYADDR: /* physical address */ 4479 break; 4480 case MII_RESV2: /* reserved 2 */ 4481 break; 4482 case MII_TPISTATUS: /* TPI status for 10mbps */ 4483 break; 4484 case MII_NCONFIG: /* network interface config */ 4485 break; 4486 default: 4487 break; 4488 } 4489 return rc; 4490 } 4491 4492 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4493 struct qeth_cmd_buffer *iob, int len, 4494 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4495 unsigned long), 4496 void *reply_param) 4497 { 4498 u16 s1, s2; 4499 4500 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4501 4502 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4503 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4504 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4505 /* adjust PDU length fields in IPA_PDU_HEADER */ 4506 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4507 s2 = (u32) len; 4508 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4509 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4510 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4511 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4512 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4513 reply_cb, reply_param); 4514 } 4515 4516 static int qeth_snmp_command_cb(struct qeth_card *card, 4517 struct qeth_reply *reply, unsigned long sdata) 4518 { 4519 struct qeth_ipa_cmd *cmd; 4520 struct qeth_arp_query_info *qinfo; 4521 struct qeth_snmp_cmd *snmp; 4522 unsigned char *data; 4523 __u16 data_len; 4524 4525 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4526 4527 cmd = (struct qeth_ipa_cmd *) sdata; 4528 data = (unsigned char *)((char *)cmd - reply->offset); 4529 qinfo = (struct qeth_arp_query_info *) reply->param; 4530 snmp = &cmd->data.setadapterparms.data.snmp; 4531 4532 if (cmd->hdr.return_code) { 4533 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4534 return 0; 4535 } 4536 if (cmd->data.setadapterparms.hdr.return_code) { 4537 cmd->hdr.return_code = 4538 cmd->data.setadapterparms.hdr.return_code; 4539 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4540 return 0; 4541 } 4542 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4543 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4544 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4545 else 4546 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4547 4548 /* check if there is enough room in userspace */ 4549 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4550 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4551 cmd->hdr.return_code = IPA_RC_ENOMEM; 4552 return 0; 4553 } 4554 QETH_CARD_TEXT_(card, 4, "snore%i", 4555 cmd->data.setadapterparms.hdr.used_total); 4556 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4557 cmd->data.setadapterparms.hdr.seq_no); 4558 /*copy entries to user buffer*/ 4559 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4560 memcpy(qinfo->udata + qinfo->udata_offset, 4561 (char *)snmp, 4562 data_len + offsetof(struct qeth_snmp_cmd, data)); 4563 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4564 } else { 4565 memcpy(qinfo->udata + qinfo->udata_offset, 4566 (char *)&snmp->request, data_len); 4567 } 4568 qinfo->udata_offset += data_len; 4569 /* check if all replies received ... */ 4570 QETH_CARD_TEXT_(card, 4, "srtot%i", 4571 cmd->data.setadapterparms.hdr.used_total); 4572 QETH_CARD_TEXT_(card, 4, "srseq%i", 4573 cmd->data.setadapterparms.hdr.seq_no); 4574 if (cmd->data.setadapterparms.hdr.seq_no < 4575 cmd->data.setadapterparms.hdr.used_total) 4576 return 1; 4577 return 0; 4578 } 4579 4580 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4581 { 4582 struct qeth_cmd_buffer *iob; 4583 struct qeth_ipa_cmd *cmd; 4584 struct qeth_snmp_ureq *ureq; 4585 unsigned int req_len; 4586 struct qeth_arp_query_info qinfo = {0, }; 4587 int rc = 0; 4588 4589 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4590 4591 if (card->info.guestlan) 4592 return -EOPNOTSUPP; 4593 4594 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4595 (!card->options.layer2)) { 4596 return -EOPNOTSUPP; 4597 } 4598 /* skip 4 bytes (data_len struct member) to get req_len */ 4599 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4600 return -EFAULT; 4601 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4602 sizeof(struct qeth_ipacmd_hdr) - 4603 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4604 return -EINVAL; 4605 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4606 if (IS_ERR(ureq)) { 4607 QETH_CARD_TEXT(card, 2, "snmpnome"); 4608 return PTR_ERR(ureq); 4609 } 4610 qinfo.udata_len = ureq->hdr.data_len; 4611 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4612 if (!qinfo.udata) { 4613 kfree(ureq); 4614 return -ENOMEM; 4615 } 4616 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4617 4618 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4619 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4620 if (!iob) { 4621 rc = -ENOMEM; 4622 goto out; 4623 } 4624 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4625 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4626 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4627 qeth_snmp_command_cb, (void *)&qinfo); 4628 if (rc) 4629 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4630 QETH_CARD_IFNAME(card), rc); 4631 else { 4632 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4633 rc = -EFAULT; 4634 } 4635 out: 4636 kfree(ureq); 4637 kfree(qinfo.udata); 4638 return rc; 4639 } 4640 4641 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4642 struct qeth_reply *reply, unsigned long data) 4643 { 4644 struct qeth_ipa_cmd *cmd; 4645 struct qeth_qoat_priv *priv; 4646 char *resdata; 4647 int resdatalen; 4648 4649 QETH_CARD_TEXT(card, 3, "qoatcb"); 4650 4651 cmd = (struct qeth_ipa_cmd *)data; 4652 priv = (struct qeth_qoat_priv *)reply->param; 4653 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4654 resdata = (char *)data + 28; 4655 4656 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4657 cmd->hdr.return_code = IPA_RC_FFFF; 4658 return 0; 4659 } 4660 4661 memcpy((priv->buffer + priv->response_len), resdata, 4662 resdatalen); 4663 priv->response_len += resdatalen; 4664 4665 if (cmd->data.setadapterparms.hdr.seq_no < 4666 cmd->data.setadapterparms.hdr.used_total) 4667 return 1; 4668 return 0; 4669 } 4670 4671 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4672 { 4673 int rc = 0; 4674 struct qeth_cmd_buffer *iob; 4675 struct qeth_ipa_cmd *cmd; 4676 struct qeth_query_oat *oat_req; 4677 struct qeth_query_oat_data oat_data; 4678 struct qeth_qoat_priv priv; 4679 void __user *tmp; 4680 4681 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4682 4683 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4684 rc = -EOPNOTSUPP; 4685 goto out; 4686 } 4687 4688 if (copy_from_user(&oat_data, udata, 4689 sizeof(struct qeth_query_oat_data))) { 4690 rc = -EFAULT; 4691 goto out; 4692 } 4693 4694 priv.buffer_len = oat_data.buffer_len; 4695 priv.response_len = 0; 4696 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4697 if (!priv.buffer) { 4698 rc = -ENOMEM; 4699 goto out; 4700 } 4701 4702 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4703 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4704 sizeof(struct qeth_query_oat)); 4705 if (!iob) { 4706 rc = -ENOMEM; 4707 goto out_free; 4708 } 4709 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4710 oat_req = &cmd->data.setadapterparms.data.query_oat; 4711 oat_req->subcmd_code = oat_data.command; 4712 4713 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4714 &priv); 4715 if (!rc) { 4716 if (is_compat_task()) 4717 tmp = compat_ptr(oat_data.ptr); 4718 else 4719 tmp = (void __user *)(unsigned long)oat_data.ptr; 4720 4721 if (copy_to_user(tmp, priv.buffer, 4722 priv.response_len)) { 4723 rc = -EFAULT; 4724 goto out_free; 4725 } 4726 4727 oat_data.response_len = priv.response_len; 4728 4729 if (copy_to_user(udata, &oat_data, 4730 sizeof(struct qeth_query_oat_data))) 4731 rc = -EFAULT; 4732 } else 4733 if (rc == IPA_RC_FFFF) 4734 rc = -EFAULT; 4735 4736 out_free: 4737 kfree(priv.buffer); 4738 out: 4739 return rc; 4740 } 4741 4742 static int qeth_query_card_info_cb(struct qeth_card *card, 4743 struct qeth_reply *reply, unsigned long data) 4744 { 4745 struct qeth_ipa_cmd *cmd; 4746 struct qeth_query_card_info *card_info; 4747 struct carrier_info *carrier_info; 4748 4749 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4750 carrier_info = (struct carrier_info *)reply->param; 4751 cmd = (struct qeth_ipa_cmd *)data; 4752 card_info = &cmd->data.setadapterparms.data.card_info; 4753 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4754 carrier_info->card_type = card_info->card_type; 4755 carrier_info->port_mode = card_info->port_mode; 4756 carrier_info->port_speed = card_info->port_speed; 4757 } 4758 4759 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4760 return 0; 4761 } 4762 4763 static int qeth_query_card_info(struct qeth_card *card, 4764 struct carrier_info *carrier_info) 4765 { 4766 struct qeth_cmd_buffer *iob; 4767 4768 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4769 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4770 return -EOPNOTSUPP; 4771 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4772 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4773 if (!iob) 4774 return -ENOMEM; 4775 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4776 (void *)carrier_info); 4777 } 4778 4779 /** 4780 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4781 * @card: pointer to a qeth_card 4782 * 4783 * Returns 4784 * 0, if a MAC address has been set for the card's netdevice 4785 * a return code, for various error conditions 4786 */ 4787 int qeth_vm_request_mac(struct qeth_card *card) 4788 { 4789 struct diag26c_mac_resp *response; 4790 struct diag26c_mac_req *request; 4791 struct ccw_dev_id id; 4792 int rc; 4793 4794 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4795 4796 if (!card->dev) 4797 return -ENODEV; 4798 4799 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4800 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4801 if (!request || !response) { 4802 rc = -ENOMEM; 4803 goto out; 4804 } 4805 4806 ccw_device_get_id(CARD_DDEV(card), &id); 4807 request->resp_buf_len = sizeof(*response); 4808 request->resp_version = DIAG26C_VERSION2; 4809 request->op_code = DIAG26C_GET_MAC; 4810 request->devno = id.devno; 4811 4812 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4813 if (rc) 4814 goto out; 4815 4816 if (request->resp_buf_len < sizeof(*response) || 4817 response->version != request->resp_version) { 4818 rc = -EIO; 4819 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4820 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4821 sizeof(request->resp_buf_len)); 4822 } else if (!is_valid_ether_addr(response->mac)) { 4823 rc = -EINVAL; 4824 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4825 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4826 } else { 4827 ether_addr_copy(card->dev->dev_addr, response->mac); 4828 } 4829 4830 out: 4831 kfree(response); 4832 kfree(request); 4833 return rc; 4834 } 4835 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4836 4837 static inline int qeth_get_qdio_q_format(struct qeth_card *card) 4838 { 4839 if (card->info.type == QETH_CARD_TYPE_IQD) 4840 return QDIO_IQDIO_QFMT; 4841 else 4842 return QDIO_QETH_QFMT; 4843 } 4844 4845 static void qeth_determine_capabilities(struct qeth_card *card) 4846 { 4847 int rc; 4848 int length; 4849 char *prcd; 4850 struct ccw_device *ddev; 4851 int ddev_offline = 0; 4852 4853 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4854 ddev = CARD_DDEV(card); 4855 if (!ddev->online) { 4856 ddev_offline = 1; 4857 rc = ccw_device_set_online(ddev); 4858 if (rc) { 4859 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4860 goto out; 4861 } 4862 } 4863 4864 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4865 if (rc) { 4866 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4867 dev_name(&card->gdev->dev), rc); 4868 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4869 goto out_offline; 4870 } 4871 qeth_configure_unitaddr(card, prcd); 4872 if (ddev_offline) 4873 qeth_configure_blkt_default(card, prcd); 4874 kfree(prcd); 4875 4876 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4877 if (rc) 4878 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4879 4880 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4881 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4882 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4883 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4884 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4885 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4886 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4887 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4888 dev_info(&card->gdev->dev, 4889 "Completion Queueing supported\n"); 4890 } else { 4891 card->options.cq = QETH_CQ_NOTAVAILABLE; 4892 } 4893 4894 4895 out_offline: 4896 if (ddev_offline == 1) 4897 ccw_device_set_offline(ddev); 4898 out: 4899 return; 4900 } 4901 4902 static inline void qeth_qdio_establish_cq(struct qeth_card *card, 4903 struct qdio_buffer **in_sbal_ptrs, 4904 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) { 4905 int i; 4906 4907 if (card->options.cq == QETH_CQ_ENABLED) { 4908 int offset = QDIO_MAX_BUFFERS_PER_Q * 4909 (card->qdio.no_in_queues - 1); 4910 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1); 4911 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4912 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4913 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4914 } 4915 4916 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4917 } 4918 } 4919 4920 static int qeth_qdio_establish(struct qeth_card *card) 4921 { 4922 struct qdio_initialize init_data; 4923 char *qib_param_field; 4924 struct qdio_buffer **in_sbal_ptrs; 4925 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4926 struct qdio_buffer **out_sbal_ptrs; 4927 int i, j, k; 4928 int rc = 0; 4929 4930 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4931 4932 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4933 GFP_KERNEL); 4934 if (!qib_param_field) { 4935 rc = -ENOMEM; 4936 goto out_free_nothing; 4937 } 4938 4939 qeth_create_qib_param_field(card, qib_param_field); 4940 qeth_create_qib_param_field_blkt(card, qib_param_field); 4941 4942 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4943 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4944 GFP_KERNEL); 4945 if (!in_sbal_ptrs) { 4946 rc = -ENOMEM; 4947 goto out_free_qib_param; 4948 } 4949 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4950 in_sbal_ptrs[i] = (struct qdio_buffer *) 4951 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4952 } 4953 4954 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4955 GFP_KERNEL); 4956 if (!queue_start_poll) { 4957 rc = -ENOMEM; 4958 goto out_free_in_sbals; 4959 } 4960 for (i = 0; i < card->qdio.no_in_queues; ++i) 4961 queue_start_poll[i] = card->discipline->start_poll; 4962 4963 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4964 4965 out_sbal_ptrs = 4966 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 4967 sizeof(void *), GFP_KERNEL); 4968 if (!out_sbal_ptrs) { 4969 rc = -ENOMEM; 4970 goto out_free_queue_start_poll; 4971 } 4972 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4973 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4974 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4975 card->qdio.out_qs[i]->bufs[j]->buffer); 4976 } 4977 4978 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4979 init_data.cdev = CARD_DDEV(card); 4980 init_data.q_format = qeth_get_qdio_q_format(card); 4981 init_data.qib_param_field_format = 0; 4982 init_data.qib_param_field = qib_param_field; 4983 init_data.no_input_qs = card->qdio.no_in_queues; 4984 init_data.no_output_qs = card->qdio.no_out_queues; 4985 init_data.input_handler = card->discipline->input_handler; 4986 init_data.output_handler = card->discipline->output_handler; 4987 init_data.queue_start_poll_array = queue_start_poll; 4988 init_data.int_parm = (unsigned long) card; 4989 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4990 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4991 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4992 init_data.scan_threshold = 4993 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 4994 4995 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4996 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4997 rc = qdio_allocate(&init_data); 4998 if (rc) { 4999 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5000 goto out; 5001 } 5002 rc = qdio_establish(&init_data); 5003 if (rc) { 5004 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5005 qdio_free(CARD_DDEV(card)); 5006 } 5007 } 5008 5009 switch (card->options.cq) { 5010 case QETH_CQ_ENABLED: 5011 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5012 break; 5013 case QETH_CQ_DISABLED: 5014 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5015 break; 5016 default: 5017 break; 5018 } 5019 out: 5020 kfree(out_sbal_ptrs); 5021 out_free_queue_start_poll: 5022 kfree(queue_start_poll); 5023 out_free_in_sbals: 5024 kfree(in_sbal_ptrs); 5025 out_free_qib_param: 5026 kfree(qib_param_field); 5027 out_free_nothing: 5028 return rc; 5029 } 5030 5031 static void qeth_core_free_card(struct qeth_card *card) 5032 { 5033 5034 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5035 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5036 qeth_clean_channel(&card->read); 5037 qeth_clean_channel(&card->write); 5038 if (card->dev) 5039 free_netdev(card->dev); 5040 qeth_free_qdio_buffers(card); 5041 unregister_service_level(&card->qeth_service_level); 5042 kfree(card); 5043 } 5044 5045 void qeth_trace_features(struct qeth_card *card) 5046 { 5047 QETH_CARD_TEXT(card, 2, "features"); 5048 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5049 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5050 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5051 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5052 sizeof(card->info.diagass_support)); 5053 } 5054 EXPORT_SYMBOL_GPL(qeth_trace_features); 5055 5056 static struct ccw_device_id qeth_ids[] = { 5057 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5058 .driver_info = QETH_CARD_TYPE_OSD}, 5059 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5060 .driver_info = QETH_CARD_TYPE_IQD}, 5061 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5062 .driver_info = QETH_CARD_TYPE_OSN}, 5063 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5064 .driver_info = QETH_CARD_TYPE_OSM}, 5065 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5066 .driver_info = QETH_CARD_TYPE_OSX}, 5067 {}, 5068 }; 5069 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5070 5071 static struct ccw_driver qeth_ccw_driver = { 5072 .driver = { 5073 .owner = THIS_MODULE, 5074 .name = "qeth", 5075 }, 5076 .ids = qeth_ids, 5077 .probe = ccwgroup_probe_ccwdev, 5078 .remove = ccwgroup_remove_ccwdev, 5079 }; 5080 5081 int qeth_core_hardsetup_card(struct qeth_card *card) 5082 { 5083 int retries = 3; 5084 int rc; 5085 5086 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5087 atomic_set(&card->force_alloc_skb, 0); 5088 qeth_update_from_chp_desc(card); 5089 retry: 5090 if (retries < 3) 5091 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5092 dev_name(&card->gdev->dev)); 5093 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5094 ccw_device_set_offline(CARD_DDEV(card)); 5095 ccw_device_set_offline(CARD_WDEV(card)); 5096 ccw_device_set_offline(CARD_RDEV(card)); 5097 qdio_free(CARD_DDEV(card)); 5098 rc = ccw_device_set_online(CARD_RDEV(card)); 5099 if (rc) 5100 goto retriable; 5101 rc = ccw_device_set_online(CARD_WDEV(card)); 5102 if (rc) 5103 goto retriable; 5104 rc = ccw_device_set_online(CARD_DDEV(card)); 5105 if (rc) 5106 goto retriable; 5107 retriable: 5108 if (rc == -ERESTARTSYS) { 5109 QETH_DBF_TEXT(SETUP, 2, "break1"); 5110 return rc; 5111 } else if (rc) { 5112 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5113 if (--retries < 0) 5114 goto out; 5115 else 5116 goto retry; 5117 } 5118 qeth_determine_capabilities(card); 5119 qeth_init_tokens(card); 5120 qeth_init_func_level(card); 5121 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5122 if (rc == -ERESTARTSYS) { 5123 QETH_DBF_TEXT(SETUP, 2, "break2"); 5124 return rc; 5125 } else if (rc) { 5126 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5127 if (--retries < 0) 5128 goto out; 5129 else 5130 goto retry; 5131 } 5132 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5133 if (rc == -ERESTARTSYS) { 5134 QETH_DBF_TEXT(SETUP, 2, "break3"); 5135 return rc; 5136 } else if (rc) { 5137 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5138 if (--retries < 0) 5139 goto out; 5140 else 5141 goto retry; 5142 } 5143 card->read_or_write_problem = 0; 5144 rc = qeth_mpc_initialize(card); 5145 if (rc) { 5146 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5147 goto out; 5148 } 5149 5150 rc = qeth_send_startlan(card); 5151 if (rc) { 5152 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5153 if (rc == IPA_RC_LAN_OFFLINE) { 5154 dev_warn(&card->gdev->dev, 5155 "The LAN is offline\n"); 5156 card->lan_online = 0; 5157 } else { 5158 rc = -ENODEV; 5159 goto out; 5160 } 5161 } else 5162 card->lan_online = 1; 5163 5164 card->options.ipa4.supported_funcs = 0; 5165 card->options.ipa6.supported_funcs = 0; 5166 card->options.adp.supported_funcs = 0; 5167 card->options.sbp.supported_funcs = 0; 5168 card->info.diagass_support = 0; 5169 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5170 if (rc == -ENOMEM) 5171 goto out; 5172 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5173 rc = qeth_query_setadapterparms(card); 5174 if (rc < 0) { 5175 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5176 goto out; 5177 } 5178 } 5179 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5180 rc = qeth_query_setdiagass(card); 5181 if (rc < 0) { 5182 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5183 goto out; 5184 } 5185 } 5186 return 0; 5187 out: 5188 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5189 "an error on the device\n"); 5190 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5191 dev_name(&card->gdev->dev), rc); 5192 return rc; 5193 } 5194 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5195 5196 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer, 5197 struct qdio_buffer_element *element, 5198 struct sk_buff **pskb, int offset, int *pfrag, int data_len) 5199 { 5200 struct page *page = virt_to_page(element->addr); 5201 if (*pskb == NULL) { 5202 if (qethbuffer->rx_skb) { 5203 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */ 5204 *pskb = qethbuffer->rx_skb; 5205 qethbuffer->rx_skb = NULL; 5206 } else { 5207 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 5208 if (!(*pskb)) 5209 return -ENOMEM; 5210 } 5211 5212 skb_reserve(*pskb, ETH_HLEN); 5213 if (data_len <= QETH_RX_PULL_LEN) { 5214 skb_put_data(*pskb, element->addr + offset, data_len); 5215 } else { 5216 get_page(page); 5217 skb_put_data(*pskb, element->addr + offset, 5218 QETH_RX_PULL_LEN); 5219 skb_fill_page_desc(*pskb, *pfrag, page, 5220 offset + QETH_RX_PULL_LEN, 5221 data_len - QETH_RX_PULL_LEN); 5222 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN; 5223 (*pskb)->len += data_len - QETH_RX_PULL_LEN; 5224 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN; 5225 (*pfrag)++; 5226 } 5227 } else { 5228 get_page(page); 5229 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len); 5230 (*pskb)->data_len += data_len; 5231 (*pskb)->len += data_len; 5232 (*pskb)->truesize += data_len; 5233 (*pfrag)++; 5234 } 5235 5236 5237 return 0; 5238 } 5239 5240 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5241 { 5242 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5243 } 5244 5245 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5246 struct qeth_qdio_buffer *qethbuffer, 5247 struct qdio_buffer_element **__element, int *__offset, 5248 struct qeth_hdr **hdr) 5249 { 5250 struct qdio_buffer_element *element = *__element; 5251 struct qdio_buffer *buffer = qethbuffer->buffer; 5252 int offset = *__offset; 5253 struct sk_buff *skb = NULL; 5254 int skb_len = 0; 5255 void *data_ptr; 5256 int data_len; 5257 int headroom = 0; 5258 int use_rx_sg = 0; 5259 int frag = 0; 5260 5261 /* qeth_hdr must not cross element boundaries */ 5262 if (element->length < offset + sizeof(struct qeth_hdr)) { 5263 if (qeth_is_last_sbale(element)) 5264 return NULL; 5265 element++; 5266 offset = 0; 5267 if (element->length < sizeof(struct qeth_hdr)) 5268 return NULL; 5269 } 5270 *hdr = element->addr + offset; 5271 5272 offset += sizeof(struct qeth_hdr); 5273 switch ((*hdr)->hdr.l2.id) { 5274 case QETH_HEADER_TYPE_LAYER2: 5275 skb_len = (*hdr)->hdr.l2.pkt_length; 5276 break; 5277 case QETH_HEADER_TYPE_LAYER3: 5278 skb_len = (*hdr)->hdr.l3.length; 5279 headroom = ETH_HLEN; 5280 break; 5281 case QETH_HEADER_TYPE_OSN: 5282 skb_len = (*hdr)->hdr.osn.pdu_length; 5283 headroom = sizeof(struct qeth_hdr); 5284 break; 5285 default: 5286 break; 5287 } 5288 5289 if (!skb_len) 5290 return NULL; 5291 5292 if (((skb_len >= card->options.rx_sg_cb) && 5293 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5294 (!atomic_read(&card->force_alloc_skb))) || 5295 (card->options.cq == QETH_CQ_ENABLED)) { 5296 use_rx_sg = 1; 5297 } else { 5298 skb = dev_alloc_skb(skb_len + headroom); 5299 if (!skb) 5300 goto no_mem; 5301 if (headroom) 5302 skb_reserve(skb, headroom); 5303 } 5304 5305 data_ptr = element->addr + offset; 5306 while (skb_len) { 5307 data_len = min(skb_len, (int)(element->length - offset)); 5308 if (data_len) { 5309 if (use_rx_sg) { 5310 if (qeth_create_skb_frag(qethbuffer, element, 5311 &skb, offset, &frag, data_len)) 5312 goto no_mem; 5313 } else { 5314 skb_put_data(skb, data_ptr, data_len); 5315 } 5316 } 5317 skb_len -= data_len; 5318 if (skb_len) { 5319 if (qeth_is_last_sbale(element)) { 5320 QETH_CARD_TEXT(card, 4, "unexeob"); 5321 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5322 dev_kfree_skb_any(skb); 5323 card->stats.rx_errors++; 5324 return NULL; 5325 } 5326 element++; 5327 offset = 0; 5328 data_ptr = element->addr; 5329 } else { 5330 offset += data_len; 5331 } 5332 } 5333 *__element = element; 5334 *__offset = offset; 5335 if (use_rx_sg && card->options.performance_stats) { 5336 card->perf_stats.sg_skbs_rx++; 5337 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5338 } 5339 return skb; 5340 no_mem: 5341 if (net_ratelimit()) { 5342 QETH_CARD_TEXT(card, 2, "noskbmem"); 5343 } 5344 card->stats.rx_dropped++; 5345 return NULL; 5346 } 5347 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5348 5349 int qeth_poll(struct napi_struct *napi, int budget) 5350 { 5351 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5352 int work_done = 0; 5353 struct qeth_qdio_buffer *buffer; 5354 int done; 5355 int new_budget = budget; 5356 5357 if (card->options.performance_stats) { 5358 card->perf_stats.inbound_cnt++; 5359 card->perf_stats.inbound_start_time = qeth_get_micros(); 5360 } 5361 5362 while (1) { 5363 if (!card->rx.b_count) { 5364 card->rx.qdio_err = 0; 5365 card->rx.b_count = qdio_get_next_buffers( 5366 card->data.ccwdev, 0, &card->rx.b_index, 5367 &card->rx.qdio_err); 5368 if (card->rx.b_count <= 0) { 5369 card->rx.b_count = 0; 5370 break; 5371 } 5372 card->rx.b_element = 5373 &card->qdio.in_q->bufs[card->rx.b_index] 5374 .buffer->element[0]; 5375 card->rx.e_offset = 0; 5376 } 5377 5378 while (card->rx.b_count) { 5379 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5380 if (!(card->rx.qdio_err && 5381 qeth_check_qdio_errors(card, buffer->buffer, 5382 card->rx.qdio_err, "qinerr"))) 5383 work_done += 5384 card->discipline->process_rx_buffer( 5385 card, new_budget, &done); 5386 else 5387 done = 1; 5388 5389 if (done) { 5390 if (card->options.performance_stats) 5391 card->perf_stats.bufs_rec++; 5392 qeth_put_buffer_pool_entry(card, 5393 buffer->pool_entry); 5394 qeth_queue_input_buffer(card, card->rx.b_index); 5395 card->rx.b_count--; 5396 if (card->rx.b_count) { 5397 card->rx.b_index = 5398 (card->rx.b_index + 1) % 5399 QDIO_MAX_BUFFERS_PER_Q; 5400 card->rx.b_element = 5401 &card->qdio.in_q 5402 ->bufs[card->rx.b_index] 5403 .buffer->element[0]; 5404 card->rx.e_offset = 0; 5405 } 5406 } 5407 5408 if (work_done >= budget) 5409 goto out; 5410 else 5411 new_budget = budget - work_done; 5412 } 5413 } 5414 5415 napi_complete(napi); 5416 if (qdio_start_irq(card->data.ccwdev, 0)) 5417 napi_schedule(&card->napi); 5418 out: 5419 if (card->options.performance_stats) 5420 card->perf_stats.inbound_time += qeth_get_micros() - 5421 card->perf_stats.inbound_start_time; 5422 return work_done; 5423 } 5424 EXPORT_SYMBOL_GPL(qeth_poll); 5425 5426 int qeth_setassparms_cb(struct qeth_card *card, 5427 struct qeth_reply *reply, unsigned long data) 5428 { 5429 struct qeth_ipa_cmd *cmd; 5430 5431 QETH_CARD_TEXT(card, 4, "defadpcb"); 5432 5433 cmd = (struct qeth_ipa_cmd *) data; 5434 if (cmd->hdr.return_code == 0) { 5435 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5436 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5437 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5438 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5439 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5440 } 5441 return 0; 5442 } 5443 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5444 5445 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5446 enum qeth_ipa_funcs ipa_func, 5447 __u16 cmd_code, __u16 len, 5448 enum qeth_prot_versions prot) 5449 { 5450 struct qeth_cmd_buffer *iob; 5451 struct qeth_ipa_cmd *cmd; 5452 5453 QETH_CARD_TEXT(card, 4, "getasscm"); 5454 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5455 5456 if (iob) { 5457 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5458 cmd->data.setassparms.hdr.assist_no = ipa_func; 5459 cmd->data.setassparms.hdr.length = 8 + len; 5460 cmd->data.setassparms.hdr.command_code = cmd_code; 5461 cmd->data.setassparms.hdr.return_code = 0; 5462 cmd->data.setassparms.hdr.seq_no = 0; 5463 } 5464 5465 return iob; 5466 } 5467 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5468 5469 int qeth_send_setassparms(struct qeth_card *card, 5470 struct qeth_cmd_buffer *iob, __u16 len, long data, 5471 int (*reply_cb)(struct qeth_card *, 5472 struct qeth_reply *, unsigned long), 5473 void *reply_param) 5474 { 5475 int rc; 5476 struct qeth_ipa_cmd *cmd; 5477 5478 QETH_CARD_TEXT(card, 4, "sendassp"); 5479 5480 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5481 if (len <= sizeof(__u32)) 5482 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5483 else /* (len > sizeof(__u32)) */ 5484 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5485 5486 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5487 return rc; 5488 } 5489 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5490 5491 int qeth_send_simple_setassparms(struct qeth_card *card, 5492 enum qeth_ipa_funcs ipa_func, 5493 __u16 cmd_code, long data) 5494 { 5495 int rc; 5496 int length = 0; 5497 struct qeth_cmd_buffer *iob; 5498 5499 QETH_CARD_TEXT(card, 4, "simassp4"); 5500 if (data) 5501 length = sizeof(__u32); 5502 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5503 length, QETH_PROT_IPV4); 5504 if (!iob) 5505 return -ENOMEM; 5506 rc = qeth_send_setassparms(card, iob, length, data, 5507 qeth_setassparms_cb, NULL); 5508 return rc; 5509 } 5510 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5511 5512 static void qeth_unregister_dbf_views(void) 5513 { 5514 int x; 5515 for (x = 0; x < QETH_DBF_INFOS; x++) { 5516 debug_unregister(qeth_dbf[x].id); 5517 qeth_dbf[x].id = NULL; 5518 } 5519 } 5520 5521 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5522 { 5523 char dbf_txt_buf[32]; 5524 va_list args; 5525 5526 if (!debug_level_enabled(id, level)) 5527 return; 5528 va_start(args, fmt); 5529 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5530 va_end(args); 5531 debug_text_event(id, level, dbf_txt_buf); 5532 } 5533 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5534 5535 static int qeth_register_dbf_views(void) 5536 { 5537 int ret; 5538 int x; 5539 5540 for (x = 0; x < QETH_DBF_INFOS; x++) { 5541 /* register the areas */ 5542 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5543 qeth_dbf[x].pages, 5544 qeth_dbf[x].areas, 5545 qeth_dbf[x].len); 5546 if (qeth_dbf[x].id == NULL) { 5547 qeth_unregister_dbf_views(); 5548 return -ENOMEM; 5549 } 5550 5551 /* register a view */ 5552 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5553 if (ret) { 5554 qeth_unregister_dbf_views(); 5555 return ret; 5556 } 5557 5558 /* set a passing level */ 5559 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5560 } 5561 5562 return 0; 5563 } 5564 5565 int qeth_core_load_discipline(struct qeth_card *card, 5566 enum qeth_discipline_id discipline) 5567 { 5568 int rc = 0; 5569 5570 mutex_lock(&qeth_mod_mutex); 5571 switch (discipline) { 5572 case QETH_DISCIPLINE_LAYER3: 5573 card->discipline = try_then_request_module( 5574 symbol_get(qeth_l3_discipline), "qeth_l3"); 5575 break; 5576 case QETH_DISCIPLINE_LAYER2: 5577 card->discipline = try_then_request_module( 5578 symbol_get(qeth_l2_discipline), "qeth_l2"); 5579 break; 5580 default: 5581 break; 5582 } 5583 5584 if (!card->discipline) { 5585 dev_err(&card->gdev->dev, "There is no kernel module to " 5586 "support discipline %d\n", discipline); 5587 rc = -EINVAL; 5588 } 5589 mutex_unlock(&qeth_mod_mutex); 5590 return rc; 5591 } 5592 5593 void qeth_core_free_discipline(struct qeth_card *card) 5594 { 5595 if (card->options.layer2) 5596 symbol_put(qeth_l2_discipline); 5597 else 5598 symbol_put(qeth_l3_discipline); 5599 card->discipline = NULL; 5600 } 5601 5602 const struct device_type qeth_generic_devtype = { 5603 .name = "qeth_generic", 5604 .groups = qeth_generic_attr_groups, 5605 }; 5606 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5607 5608 static const struct device_type qeth_osn_devtype = { 5609 .name = "qeth_osn", 5610 .groups = qeth_osn_attr_groups, 5611 }; 5612 5613 #define DBF_NAME_LEN 20 5614 5615 struct qeth_dbf_entry { 5616 char dbf_name[DBF_NAME_LEN]; 5617 debug_info_t *dbf_info; 5618 struct list_head dbf_list; 5619 }; 5620 5621 static LIST_HEAD(qeth_dbf_list); 5622 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5623 5624 static debug_info_t *qeth_get_dbf_entry(char *name) 5625 { 5626 struct qeth_dbf_entry *entry; 5627 debug_info_t *rc = NULL; 5628 5629 mutex_lock(&qeth_dbf_list_mutex); 5630 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5631 if (strcmp(entry->dbf_name, name) == 0) { 5632 rc = entry->dbf_info; 5633 break; 5634 } 5635 } 5636 mutex_unlock(&qeth_dbf_list_mutex); 5637 return rc; 5638 } 5639 5640 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5641 { 5642 struct qeth_dbf_entry *new_entry; 5643 5644 card->debug = debug_register(name, 2, 1, 8); 5645 if (!card->debug) { 5646 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5647 goto err; 5648 } 5649 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5650 goto err_dbg; 5651 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5652 if (!new_entry) 5653 goto err_dbg; 5654 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5655 new_entry->dbf_info = card->debug; 5656 mutex_lock(&qeth_dbf_list_mutex); 5657 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5658 mutex_unlock(&qeth_dbf_list_mutex); 5659 5660 return 0; 5661 5662 err_dbg: 5663 debug_unregister(card->debug); 5664 err: 5665 return -ENOMEM; 5666 } 5667 5668 static void qeth_clear_dbf_list(void) 5669 { 5670 struct qeth_dbf_entry *entry, *tmp; 5671 5672 mutex_lock(&qeth_dbf_list_mutex); 5673 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5674 list_del(&entry->dbf_list); 5675 debug_unregister(entry->dbf_info); 5676 kfree(entry); 5677 } 5678 mutex_unlock(&qeth_dbf_list_mutex); 5679 } 5680 5681 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5682 { 5683 struct qeth_card *card; 5684 struct device *dev; 5685 int rc; 5686 enum qeth_discipline_id enforced_disc; 5687 unsigned long flags; 5688 char dbf_name[DBF_NAME_LEN]; 5689 5690 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5691 5692 dev = &gdev->dev; 5693 if (!get_device(dev)) 5694 return -ENODEV; 5695 5696 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5697 5698 card = qeth_alloc_card(); 5699 if (!card) { 5700 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5701 rc = -ENOMEM; 5702 goto err_dev; 5703 } 5704 5705 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5706 dev_name(&gdev->dev)); 5707 card->debug = qeth_get_dbf_entry(dbf_name); 5708 if (!card->debug) { 5709 rc = qeth_add_dbf_entry(card, dbf_name); 5710 if (rc) 5711 goto err_card; 5712 } 5713 5714 card->read.ccwdev = gdev->cdev[0]; 5715 card->write.ccwdev = gdev->cdev[1]; 5716 card->data.ccwdev = gdev->cdev[2]; 5717 dev_set_drvdata(&gdev->dev, card); 5718 card->gdev = gdev; 5719 gdev->cdev[0]->handler = qeth_irq; 5720 gdev->cdev[1]->handler = qeth_irq; 5721 gdev->cdev[2]->handler = qeth_irq; 5722 5723 rc = qeth_determine_card_type(card); 5724 if (rc) { 5725 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5726 goto err_card; 5727 } 5728 rc = qeth_setup_card(card); 5729 if (rc) { 5730 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5731 goto err_card; 5732 } 5733 5734 qeth_determine_capabilities(card); 5735 enforced_disc = qeth_enforce_discipline(card); 5736 switch (enforced_disc) { 5737 case QETH_DISCIPLINE_UNDETERMINED: 5738 gdev->dev.type = &qeth_generic_devtype; 5739 break; 5740 default: 5741 card->info.layer_enforced = true; 5742 rc = qeth_core_load_discipline(card, enforced_disc); 5743 if (rc) 5744 goto err_card; 5745 5746 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5747 ? card->discipline->devtype 5748 : &qeth_osn_devtype; 5749 rc = card->discipline->setup(card->gdev); 5750 if (rc) 5751 goto err_disc; 5752 break; 5753 } 5754 5755 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5756 list_add_tail(&card->list, &qeth_core_card_list.list); 5757 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5758 return 0; 5759 5760 err_disc: 5761 qeth_core_free_discipline(card); 5762 err_card: 5763 qeth_core_free_card(card); 5764 err_dev: 5765 put_device(dev); 5766 return rc; 5767 } 5768 5769 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5770 { 5771 unsigned long flags; 5772 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5773 5774 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5775 5776 if (card->discipline) { 5777 card->discipline->remove(gdev); 5778 qeth_core_free_discipline(card); 5779 } 5780 5781 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5782 list_del(&card->list); 5783 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5784 qeth_core_free_card(card); 5785 dev_set_drvdata(&gdev->dev, NULL); 5786 put_device(&gdev->dev); 5787 return; 5788 } 5789 5790 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5791 { 5792 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5793 int rc = 0; 5794 enum qeth_discipline_id def_discipline; 5795 5796 if (!card->discipline) { 5797 if (card->info.type == QETH_CARD_TYPE_IQD) 5798 def_discipline = QETH_DISCIPLINE_LAYER3; 5799 else 5800 def_discipline = QETH_DISCIPLINE_LAYER2; 5801 rc = qeth_core_load_discipline(card, def_discipline); 5802 if (rc) 5803 goto err; 5804 rc = card->discipline->setup(card->gdev); 5805 if (rc) { 5806 qeth_core_free_discipline(card); 5807 goto err; 5808 } 5809 } 5810 rc = card->discipline->set_online(gdev); 5811 err: 5812 return rc; 5813 } 5814 5815 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5816 { 5817 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5818 return card->discipline->set_offline(gdev); 5819 } 5820 5821 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5822 { 5823 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5824 qeth_set_allowed_threads(card, 0, 1); 5825 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5826 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5827 qeth_qdio_clear_card(card, 0); 5828 qeth_clear_qdio_buffers(card); 5829 qdio_free(CARD_DDEV(card)); 5830 } 5831 5832 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5833 { 5834 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5835 if (card->discipline && card->discipline->freeze) 5836 return card->discipline->freeze(gdev); 5837 return 0; 5838 } 5839 5840 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5841 { 5842 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5843 if (card->discipline && card->discipline->thaw) 5844 return card->discipline->thaw(gdev); 5845 return 0; 5846 } 5847 5848 static int qeth_core_restore(struct ccwgroup_device *gdev) 5849 { 5850 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5851 if (card->discipline && card->discipline->restore) 5852 return card->discipline->restore(gdev); 5853 return 0; 5854 } 5855 5856 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5857 .driver = { 5858 .owner = THIS_MODULE, 5859 .name = "qeth", 5860 }, 5861 .setup = qeth_core_probe_device, 5862 .remove = qeth_core_remove_device, 5863 .set_online = qeth_core_set_online, 5864 .set_offline = qeth_core_set_offline, 5865 .shutdown = qeth_core_shutdown, 5866 .prepare = NULL, 5867 .complete = NULL, 5868 .freeze = qeth_core_freeze, 5869 .thaw = qeth_core_thaw, 5870 .restore = qeth_core_restore, 5871 }; 5872 5873 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5874 size_t count) 5875 { 5876 int err; 5877 5878 err = ccwgroup_create_dev(qeth_core_root_dev, 5879 &qeth_core_ccwgroup_driver, 3, buf); 5880 5881 return err ? err : count; 5882 } 5883 static DRIVER_ATTR_WO(group); 5884 5885 static struct attribute *qeth_drv_attrs[] = { 5886 &driver_attr_group.attr, 5887 NULL, 5888 }; 5889 static struct attribute_group qeth_drv_attr_group = { 5890 .attrs = qeth_drv_attrs, 5891 }; 5892 static const struct attribute_group *qeth_drv_attr_groups[] = { 5893 &qeth_drv_attr_group, 5894 NULL, 5895 }; 5896 5897 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5898 { 5899 struct qeth_card *card = dev->ml_priv; 5900 struct mii_ioctl_data *mii_data; 5901 int rc = 0; 5902 5903 if (!card) 5904 return -ENODEV; 5905 5906 if (!qeth_card_hw_is_reachable(card)) 5907 return -ENODEV; 5908 5909 if (card->info.type == QETH_CARD_TYPE_OSN) 5910 return -EPERM; 5911 5912 switch (cmd) { 5913 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5914 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5915 break; 5916 case SIOC_QETH_GET_CARD_TYPE: 5917 if ((card->info.type == QETH_CARD_TYPE_OSD || 5918 card->info.type == QETH_CARD_TYPE_OSM || 5919 card->info.type == QETH_CARD_TYPE_OSX) && 5920 !card->info.guestlan) 5921 return 1; 5922 else 5923 return 0; 5924 case SIOCGMIIPHY: 5925 mii_data = if_mii(rq); 5926 mii_data->phy_id = 0; 5927 break; 5928 case SIOCGMIIREG: 5929 mii_data = if_mii(rq); 5930 if (mii_data->phy_id != 0) 5931 rc = -EINVAL; 5932 else 5933 mii_data->val_out = qeth_mdio_read(dev, 5934 mii_data->phy_id, mii_data->reg_num); 5935 break; 5936 case SIOC_QETH_QUERY_OAT: 5937 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5938 break; 5939 default: 5940 if (card->discipline->do_ioctl) 5941 rc = card->discipline->do_ioctl(dev, rq, cmd); 5942 else 5943 rc = -EOPNOTSUPP; 5944 } 5945 if (rc) 5946 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5947 return rc; 5948 } 5949 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5950 5951 static struct { 5952 const char str[ETH_GSTRING_LEN]; 5953 } qeth_ethtool_stats_keys[] = { 5954 /* 0 */{"rx skbs"}, 5955 {"rx buffers"}, 5956 {"tx skbs"}, 5957 {"tx buffers"}, 5958 {"tx skbs no packing"}, 5959 {"tx buffers no packing"}, 5960 {"tx skbs packing"}, 5961 {"tx buffers packing"}, 5962 {"tx sg skbs"}, 5963 {"tx sg frags"}, 5964 /* 10 */{"rx sg skbs"}, 5965 {"rx sg frags"}, 5966 {"rx sg page allocs"}, 5967 {"tx large kbytes"}, 5968 {"tx large count"}, 5969 {"tx pk state ch n->p"}, 5970 {"tx pk state ch p->n"}, 5971 {"tx pk watermark low"}, 5972 {"tx pk watermark high"}, 5973 {"queue 0 buffer usage"}, 5974 /* 20 */{"queue 1 buffer usage"}, 5975 {"queue 2 buffer usage"}, 5976 {"queue 3 buffer usage"}, 5977 {"rx poll time"}, 5978 {"rx poll count"}, 5979 {"rx do_QDIO time"}, 5980 {"rx do_QDIO count"}, 5981 {"tx handler time"}, 5982 {"tx handler count"}, 5983 {"tx time"}, 5984 /* 30 */{"tx count"}, 5985 {"tx do_QDIO time"}, 5986 {"tx do_QDIO count"}, 5987 {"tx csum"}, 5988 {"tx lin"}, 5989 {"tx linfail"}, 5990 {"cq handler count"}, 5991 {"cq handler time"} 5992 }; 5993 5994 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 5995 { 5996 switch (stringset) { 5997 case ETH_SS_STATS: 5998 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 5999 default: 6000 return -EINVAL; 6001 } 6002 } 6003 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 6004 6005 void qeth_core_get_ethtool_stats(struct net_device *dev, 6006 struct ethtool_stats *stats, u64 *data) 6007 { 6008 struct qeth_card *card = dev->ml_priv; 6009 data[0] = card->stats.rx_packets - 6010 card->perf_stats.initial_rx_packets; 6011 data[1] = card->perf_stats.bufs_rec; 6012 data[2] = card->stats.tx_packets - 6013 card->perf_stats.initial_tx_packets; 6014 data[3] = card->perf_stats.bufs_sent; 6015 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 6016 - card->perf_stats.skbs_sent_pack; 6017 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 6018 data[6] = card->perf_stats.skbs_sent_pack; 6019 data[7] = card->perf_stats.bufs_sent_pack; 6020 data[8] = card->perf_stats.sg_skbs_sent; 6021 data[9] = card->perf_stats.sg_frags_sent; 6022 data[10] = card->perf_stats.sg_skbs_rx; 6023 data[11] = card->perf_stats.sg_frags_rx; 6024 data[12] = card->perf_stats.sg_alloc_page_rx; 6025 data[13] = (card->perf_stats.large_send_bytes >> 10); 6026 data[14] = card->perf_stats.large_send_cnt; 6027 data[15] = card->perf_stats.sc_dp_p; 6028 data[16] = card->perf_stats.sc_p_dp; 6029 data[17] = QETH_LOW_WATERMARK_PACK; 6030 data[18] = QETH_HIGH_WATERMARK_PACK; 6031 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 6032 data[20] = (card->qdio.no_out_queues > 1) ? 6033 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 6034 data[21] = (card->qdio.no_out_queues > 2) ? 6035 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6036 data[22] = (card->qdio.no_out_queues > 3) ? 6037 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6038 data[23] = card->perf_stats.inbound_time; 6039 data[24] = card->perf_stats.inbound_cnt; 6040 data[25] = card->perf_stats.inbound_do_qdio_time; 6041 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6042 data[27] = card->perf_stats.outbound_handler_time; 6043 data[28] = card->perf_stats.outbound_handler_cnt; 6044 data[29] = card->perf_stats.outbound_time; 6045 data[30] = card->perf_stats.outbound_cnt; 6046 data[31] = card->perf_stats.outbound_do_qdio_time; 6047 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6048 data[33] = card->perf_stats.tx_csum; 6049 data[34] = card->perf_stats.tx_lin; 6050 data[35] = card->perf_stats.tx_linfail; 6051 data[36] = card->perf_stats.cq_cnt; 6052 data[37] = card->perf_stats.cq_time; 6053 } 6054 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6055 6056 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6057 { 6058 switch (stringset) { 6059 case ETH_SS_STATS: 6060 memcpy(data, &qeth_ethtool_stats_keys, 6061 sizeof(qeth_ethtool_stats_keys)); 6062 break; 6063 default: 6064 WARN_ON(1); 6065 break; 6066 } 6067 } 6068 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6069 6070 void qeth_core_get_drvinfo(struct net_device *dev, 6071 struct ethtool_drvinfo *info) 6072 { 6073 struct qeth_card *card = dev->ml_priv; 6074 6075 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6076 sizeof(info->driver)); 6077 strlcpy(info->version, "1.0", sizeof(info->version)); 6078 strlcpy(info->fw_version, card->info.mcl_level, 6079 sizeof(info->fw_version)); 6080 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6081 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6082 } 6083 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6084 6085 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6086 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6087 /* Always advertise and support all speeds up to specified, and only one */ 6088 /* specified port type. */ 6089 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6090 int maxspeed, int porttype) 6091 { 6092 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6093 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6094 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6095 6096 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6097 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6098 6099 switch (porttype) { 6100 case PORT_TP: 6101 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6102 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6103 break; 6104 case PORT_FIBRE: 6105 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6106 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6107 break; 6108 default: 6109 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6110 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6111 WARN_ON_ONCE(1); 6112 } 6113 6114 /* fallthrough from high to low, to select all legal speeds: */ 6115 switch (maxspeed) { 6116 case SPEED_10000: 6117 ethtool_link_ksettings_add_link_mode(cmd, supported, 6118 10000baseT_Full); 6119 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6120 10000baseT_Full); 6121 case SPEED_1000: 6122 ethtool_link_ksettings_add_link_mode(cmd, supported, 6123 1000baseT_Full); 6124 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6125 1000baseT_Full); 6126 ethtool_link_ksettings_add_link_mode(cmd, supported, 6127 1000baseT_Half); 6128 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6129 1000baseT_Half); 6130 case SPEED_100: 6131 ethtool_link_ksettings_add_link_mode(cmd, supported, 6132 100baseT_Full); 6133 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6134 100baseT_Full); 6135 ethtool_link_ksettings_add_link_mode(cmd, supported, 6136 100baseT_Half); 6137 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6138 100baseT_Half); 6139 case SPEED_10: 6140 ethtool_link_ksettings_add_link_mode(cmd, supported, 6141 10baseT_Full); 6142 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6143 10baseT_Full); 6144 ethtool_link_ksettings_add_link_mode(cmd, supported, 6145 10baseT_Half); 6146 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6147 10baseT_Half); 6148 /* end fallthrough */ 6149 break; 6150 default: 6151 ethtool_link_ksettings_add_link_mode(cmd, supported, 6152 10baseT_Full); 6153 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6154 10baseT_Full); 6155 ethtool_link_ksettings_add_link_mode(cmd, supported, 6156 10baseT_Half); 6157 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6158 10baseT_Half); 6159 WARN_ON_ONCE(1); 6160 } 6161 } 6162 6163 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6164 struct ethtool_link_ksettings *cmd) 6165 { 6166 struct qeth_card *card = netdev->ml_priv; 6167 enum qeth_link_types link_type; 6168 struct carrier_info carrier_info; 6169 int rc; 6170 6171 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6172 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6173 else 6174 link_type = card->info.link_type; 6175 6176 cmd->base.duplex = DUPLEX_FULL; 6177 cmd->base.autoneg = AUTONEG_ENABLE; 6178 cmd->base.phy_address = 0; 6179 cmd->base.mdio_support = 0; 6180 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6181 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6182 6183 switch (link_type) { 6184 case QETH_LINK_TYPE_FAST_ETH: 6185 case QETH_LINK_TYPE_LANE_ETH100: 6186 cmd->base.speed = SPEED_100; 6187 cmd->base.port = PORT_TP; 6188 break; 6189 case QETH_LINK_TYPE_GBIT_ETH: 6190 case QETH_LINK_TYPE_LANE_ETH1000: 6191 cmd->base.speed = SPEED_1000; 6192 cmd->base.port = PORT_FIBRE; 6193 break; 6194 case QETH_LINK_TYPE_10GBIT_ETH: 6195 cmd->base.speed = SPEED_10000; 6196 cmd->base.port = PORT_FIBRE; 6197 break; 6198 default: 6199 cmd->base.speed = SPEED_10; 6200 cmd->base.port = PORT_TP; 6201 } 6202 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6203 6204 /* Check if we can obtain more accurate information. */ 6205 /* If QUERY_CARD_INFO command is not supported or fails, */ 6206 /* just return the heuristics that was filled above. */ 6207 if (!qeth_card_hw_is_reachable(card)) 6208 return -ENODEV; 6209 rc = qeth_query_card_info(card, &carrier_info); 6210 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6211 return 0; 6212 if (rc) /* report error from the hardware operation */ 6213 return rc; 6214 /* on success, fill in the information got from the hardware */ 6215 6216 netdev_dbg(netdev, 6217 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6218 carrier_info.card_type, 6219 carrier_info.port_mode, 6220 carrier_info.port_speed); 6221 6222 /* Update attributes for which we've obtained more authoritative */ 6223 /* information, leave the rest the way they where filled above. */ 6224 switch (carrier_info.card_type) { 6225 case CARD_INFO_TYPE_1G_COPPER_A: 6226 case CARD_INFO_TYPE_1G_COPPER_B: 6227 cmd->base.port = PORT_TP; 6228 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6229 break; 6230 case CARD_INFO_TYPE_1G_FIBRE_A: 6231 case CARD_INFO_TYPE_1G_FIBRE_B: 6232 cmd->base.port = PORT_FIBRE; 6233 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6234 break; 6235 case CARD_INFO_TYPE_10G_FIBRE_A: 6236 case CARD_INFO_TYPE_10G_FIBRE_B: 6237 cmd->base.port = PORT_FIBRE; 6238 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6239 break; 6240 } 6241 6242 switch (carrier_info.port_mode) { 6243 case CARD_INFO_PORTM_FULLDUPLEX: 6244 cmd->base.duplex = DUPLEX_FULL; 6245 break; 6246 case CARD_INFO_PORTM_HALFDUPLEX: 6247 cmd->base.duplex = DUPLEX_HALF; 6248 break; 6249 } 6250 6251 switch (carrier_info.port_speed) { 6252 case CARD_INFO_PORTS_10M: 6253 cmd->base.speed = SPEED_10; 6254 break; 6255 case CARD_INFO_PORTS_100M: 6256 cmd->base.speed = SPEED_100; 6257 break; 6258 case CARD_INFO_PORTS_1G: 6259 cmd->base.speed = SPEED_1000; 6260 break; 6261 case CARD_INFO_PORTS_10G: 6262 cmd->base.speed = SPEED_10000; 6263 break; 6264 } 6265 6266 return 0; 6267 } 6268 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6269 6270 /* Callback to handle checksum offload command reply from OSA card. 6271 * Verify that required features have been enabled on the card. 6272 * Return error in hdr->return_code as this value is checked by caller. 6273 * 6274 * Always returns zero to indicate no further messages from the OSA card. 6275 */ 6276 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6277 struct qeth_reply *reply, 6278 unsigned long data) 6279 { 6280 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6281 struct qeth_checksum_cmd *chksum_cb = 6282 (struct qeth_checksum_cmd *)reply->param; 6283 6284 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6285 if (cmd->hdr.return_code) 6286 return 0; 6287 6288 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6289 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6290 chksum_cb->supported = 6291 cmd->data.setassparms.data.chksum.supported; 6292 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6293 } 6294 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6295 chksum_cb->supported = 6296 cmd->data.setassparms.data.chksum.supported; 6297 chksum_cb->enabled = 6298 cmd->data.setassparms.data.chksum.enabled; 6299 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6300 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6301 } 6302 return 0; 6303 } 6304 6305 /* Send command to OSA card and check results. */ 6306 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6307 enum qeth_ipa_funcs ipa_func, 6308 __u16 cmd_code, long data, 6309 struct qeth_checksum_cmd *chksum_cb) 6310 { 6311 struct qeth_cmd_buffer *iob; 6312 int rc = -ENOMEM; 6313 6314 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6315 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6316 sizeof(__u32), QETH_PROT_IPV4); 6317 if (iob) 6318 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6319 qeth_ipa_checksum_run_cmd_cb, 6320 chksum_cb); 6321 return rc; 6322 } 6323 6324 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6325 { 6326 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR | 6327 QETH_IPA_CHECKSUM_UDP | 6328 QETH_IPA_CHECKSUM_TCP; 6329 struct qeth_checksum_cmd chksum_cb; 6330 int rc; 6331 6332 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6333 &chksum_cb); 6334 if (!rc) { 6335 if ((required_features & chksum_cb.supported) != 6336 required_features) 6337 rc = -EIO; 6338 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6339 cstype == IPA_INBOUND_CHECKSUM) 6340 dev_warn(&card->gdev->dev, 6341 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6342 QETH_CARD_IFNAME(card)); 6343 } 6344 if (rc) { 6345 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6346 dev_warn(&card->gdev->dev, 6347 "Starting HW checksumming for %s failed, using SW checksumming\n", 6348 QETH_CARD_IFNAME(card)); 6349 return rc; 6350 } 6351 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6352 chksum_cb.supported, &chksum_cb); 6353 if (!rc) { 6354 if ((required_features & chksum_cb.enabled) != 6355 required_features) 6356 rc = -EIO; 6357 } 6358 if (rc) { 6359 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6360 dev_warn(&card->gdev->dev, 6361 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6362 QETH_CARD_IFNAME(card)); 6363 return rc; 6364 } 6365 6366 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6367 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6368 return 0; 6369 } 6370 6371 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6372 { 6373 int rc = (on) ? qeth_send_checksum_on(card, cstype) 6374 : qeth_send_simple_setassparms(card, cstype, 6375 IPA_CMD_ASS_STOP, 0); 6376 return rc ? -EIO : 0; 6377 } 6378 6379 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6380 { 6381 int rc; 6382 6383 QETH_CARD_TEXT(card, 3, "sttso"); 6384 6385 if (on) { 6386 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6387 IPA_CMD_ASS_START, 0); 6388 if (rc) { 6389 dev_warn(&card->gdev->dev, 6390 "Starting outbound TCP segmentation offload for %s failed\n", 6391 QETH_CARD_IFNAME(card)); 6392 return -EIO; 6393 } 6394 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6395 } else { 6396 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6397 IPA_CMD_ASS_STOP, 0); 6398 } 6399 return rc; 6400 } 6401 6402 /* try to restore device features on a device after recovery */ 6403 int qeth_recover_features(struct net_device *dev) 6404 { 6405 struct qeth_card *card = dev->ml_priv; 6406 netdev_features_t recover = dev->features; 6407 6408 if (recover & NETIF_F_IP_CSUM) { 6409 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM)) 6410 recover ^= NETIF_F_IP_CSUM; 6411 } 6412 if (recover & NETIF_F_RXCSUM) { 6413 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM)) 6414 recover ^= NETIF_F_RXCSUM; 6415 } 6416 if (recover & NETIF_F_TSO) { 6417 if (qeth_set_ipa_tso(card, 1)) 6418 recover ^= NETIF_F_TSO; 6419 } 6420 6421 if (recover == dev->features) 6422 return 0; 6423 6424 dev_warn(&card->gdev->dev, 6425 "Device recovery failed to restore all offload features\n"); 6426 dev->features = recover; 6427 return -EIO; 6428 } 6429 EXPORT_SYMBOL_GPL(qeth_recover_features); 6430 6431 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6432 { 6433 struct qeth_card *card = dev->ml_priv; 6434 netdev_features_t changed = dev->features ^ features; 6435 int rc = 0; 6436 6437 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6438 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6439 6440 if ((changed & NETIF_F_IP_CSUM)) { 6441 rc = qeth_set_ipa_csum(card, 6442 features & NETIF_F_IP_CSUM ? 1 : 0, 6443 IPA_OUTBOUND_CHECKSUM); 6444 if (rc) 6445 changed ^= NETIF_F_IP_CSUM; 6446 } 6447 if ((changed & NETIF_F_RXCSUM)) { 6448 rc = qeth_set_ipa_csum(card, 6449 features & NETIF_F_RXCSUM ? 1 : 0, 6450 IPA_INBOUND_CHECKSUM); 6451 if (rc) 6452 changed ^= NETIF_F_RXCSUM; 6453 } 6454 if ((changed & NETIF_F_TSO)) { 6455 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6456 if (rc) 6457 changed ^= NETIF_F_TSO; 6458 } 6459 6460 /* everything changed successfully? */ 6461 if ((dev->features ^ features) == changed) 6462 return 0; 6463 /* something went wrong. save changed features and return error */ 6464 dev->features ^= changed; 6465 return -EIO; 6466 } 6467 EXPORT_SYMBOL_GPL(qeth_set_features); 6468 6469 netdev_features_t qeth_fix_features(struct net_device *dev, 6470 netdev_features_t features) 6471 { 6472 struct qeth_card *card = dev->ml_priv; 6473 6474 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6475 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6476 features &= ~NETIF_F_IP_CSUM; 6477 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6478 features &= ~NETIF_F_RXCSUM; 6479 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6480 features &= ~NETIF_F_TSO; 6481 /* if the card isn't up, remove features that require hw changes */ 6482 if (card->state == CARD_STATE_DOWN || 6483 card->state == CARD_STATE_RECOVER) 6484 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 6485 NETIF_F_TSO); 6486 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6487 return features; 6488 } 6489 EXPORT_SYMBOL_GPL(qeth_fix_features); 6490 6491 static int __init qeth_core_init(void) 6492 { 6493 int rc; 6494 6495 pr_info("loading core functions\n"); 6496 INIT_LIST_HEAD(&qeth_core_card_list.list); 6497 INIT_LIST_HEAD(&qeth_dbf_list); 6498 rwlock_init(&qeth_core_card_list.rwlock); 6499 mutex_init(&qeth_mod_mutex); 6500 6501 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6502 6503 rc = qeth_register_dbf_views(); 6504 if (rc) 6505 goto out_err; 6506 qeth_core_root_dev = root_device_register("qeth"); 6507 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6508 if (rc) 6509 goto register_err; 6510 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6511 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6512 if (!qeth_core_header_cache) { 6513 rc = -ENOMEM; 6514 goto slab_err; 6515 } 6516 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6517 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6518 if (!qeth_qdio_outbuf_cache) { 6519 rc = -ENOMEM; 6520 goto cqslab_err; 6521 } 6522 rc = ccw_driver_register(&qeth_ccw_driver); 6523 if (rc) 6524 goto ccw_err; 6525 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6526 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6527 if (rc) 6528 goto ccwgroup_err; 6529 6530 return 0; 6531 6532 ccwgroup_err: 6533 ccw_driver_unregister(&qeth_ccw_driver); 6534 ccw_err: 6535 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6536 cqslab_err: 6537 kmem_cache_destroy(qeth_core_header_cache); 6538 slab_err: 6539 root_device_unregister(qeth_core_root_dev); 6540 register_err: 6541 qeth_unregister_dbf_views(); 6542 out_err: 6543 pr_err("Initializing the qeth device driver failed\n"); 6544 return rc; 6545 } 6546 6547 static void __exit qeth_core_exit(void) 6548 { 6549 qeth_clear_dbf_list(); 6550 destroy_workqueue(qeth_wq); 6551 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6552 ccw_driver_unregister(&qeth_ccw_driver); 6553 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6554 kmem_cache_destroy(qeth_core_header_cache); 6555 root_device_unregister(qeth_core_root_dev); 6556 qeth_unregister_dbf_views(); 6557 pr_info("core functions removed\n"); 6558 } 6559 6560 module_init(qeth_core_init); 6561 module_exit(qeth_core_exit); 6562 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6563 MODULE_DESCRIPTION("qeth core functions"); 6564 MODULE_LICENSE("GPL"); 6565