1 /* 2 * Copyright IBM Corp. 2007, 2009 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 4 * Frank Pavlic <fpavlic@de.ibm.com>, 5 * Thomas Spatzier <tspat@de.ibm.com>, 6 * Frank Blaschka <frank.blaschka@de.ibm.com> 7 */ 8 9 #define KMSG_COMPONENT "qeth" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/string.h> 15 #include <linux/errno.h> 16 #include <linux/kernel.h> 17 #include <linux/ip.h> 18 #include <linux/tcp.h> 19 #include <linux/mii.h> 20 #include <linux/kthread.h> 21 #include <linux/slab.h> 22 #include <net/iucv/af_iucv.h> 23 #include <net/dsfield.h> 24 25 #include <asm/ebcdic.h> 26 #include <asm/chpid.h> 27 #include <asm/io.h> 28 #include <asm/sysinfo.h> 29 #include <asm/compat.h> 30 31 #include "qeth_core.h" 32 33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 34 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 35 /* N P A M L V H */ 36 [QETH_DBF_SETUP] = {"qeth_setup", 37 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 38 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 39 &debug_sprintf_view, NULL}, 40 [QETH_DBF_CTRL] = {"qeth_control", 41 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 42 }; 43 EXPORT_SYMBOL_GPL(qeth_dbf); 44 45 struct qeth_card_list_struct qeth_core_card_list; 46 EXPORT_SYMBOL_GPL(qeth_core_card_list); 47 struct kmem_cache *qeth_core_header_cache; 48 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 49 static struct kmem_cache *qeth_qdio_outbuf_cache; 50 51 static struct device *qeth_core_root_dev; 52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY; 53 static struct lock_class_key qdio_out_skb_queue_key; 54 static struct mutex qeth_mod_mutex; 55 56 static void qeth_send_control_data_cb(struct qeth_channel *, 57 struct qeth_cmd_buffer *); 58 static int qeth_issue_next_read(struct qeth_card *); 59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 61 static void qeth_free_buffer_pool(struct qeth_card *); 62 static int qeth_qdio_establish(struct qeth_card *); 63 static void qeth_free_qdio_buffers(struct qeth_card *); 64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 65 struct qeth_qdio_out_buffer *buf, 66 enum iucv_tx_notify notification); 67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 69 struct qeth_qdio_out_buffer *buf, 70 enum qeth_qdio_buffer_states newbufstate); 71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 72 73 struct workqueue_struct *qeth_wq; 74 EXPORT_SYMBOL_GPL(qeth_wq); 75 76 int qeth_card_hw_is_reachable(struct qeth_card *card) 77 { 78 return (card->state == CARD_STATE_SOFTSETUP) || 79 (card->state == CARD_STATE_UP); 80 } 81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 82 83 static void qeth_close_dev_handler(struct work_struct *work) 84 { 85 struct qeth_card *card; 86 87 card = container_of(work, struct qeth_card, close_dev_work); 88 QETH_CARD_TEXT(card, 2, "cldevhdl"); 89 rtnl_lock(); 90 dev_close(card->dev); 91 rtnl_unlock(); 92 ccwgroup_set_offline(card->gdev); 93 } 94 95 void qeth_close_dev(struct qeth_card *card) 96 { 97 QETH_CARD_TEXT(card, 2, "cldevsubm"); 98 queue_work(qeth_wq, &card->close_dev_work); 99 } 100 EXPORT_SYMBOL_GPL(qeth_close_dev); 101 102 static inline const char *qeth_get_cardname(struct qeth_card *card) 103 { 104 if (card->info.guestlan) { 105 switch (card->info.type) { 106 case QETH_CARD_TYPE_OSD: 107 return " Virtual NIC QDIO"; 108 case QETH_CARD_TYPE_IQD: 109 return " Virtual NIC Hiper"; 110 case QETH_CARD_TYPE_OSM: 111 return " Virtual NIC QDIO - OSM"; 112 case QETH_CARD_TYPE_OSX: 113 return " Virtual NIC QDIO - OSX"; 114 default: 115 return " unknown"; 116 } 117 } else { 118 switch (card->info.type) { 119 case QETH_CARD_TYPE_OSD: 120 return " OSD Express"; 121 case QETH_CARD_TYPE_IQD: 122 return " HiperSockets"; 123 case QETH_CARD_TYPE_OSN: 124 return " OSN QDIO"; 125 case QETH_CARD_TYPE_OSM: 126 return " OSM QDIO"; 127 case QETH_CARD_TYPE_OSX: 128 return " OSX QDIO"; 129 default: 130 return " unknown"; 131 } 132 } 133 return " n/a"; 134 } 135 136 /* max length to be returned: 14 */ 137 const char *qeth_get_cardname_short(struct qeth_card *card) 138 { 139 if (card->info.guestlan) { 140 switch (card->info.type) { 141 case QETH_CARD_TYPE_OSD: 142 return "Virt.NIC QDIO"; 143 case QETH_CARD_TYPE_IQD: 144 return "Virt.NIC Hiper"; 145 case QETH_CARD_TYPE_OSM: 146 return "Virt.NIC OSM"; 147 case QETH_CARD_TYPE_OSX: 148 return "Virt.NIC OSX"; 149 default: 150 return "unknown"; 151 } 152 } else { 153 switch (card->info.type) { 154 case QETH_CARD_TYPE_OSD: 155 switch (card->info.link_type) { 156 case QETH_LINK_TYPE_FAST_ETH: 157 return "OSD_100"; 158 case QETH_LINK_TYPE_HSTR: 159 return "HSTR"; 160 case QETH_LINK_TYPE_GBIT_ETH: 161 return "OSD_1000"; 162 case QETH_LINK_TYPE_10GBIT_ETH: 163 return "OSD_10GIG"; 164 case QETH_LINK_TYPE_LANE_ETH100: 165 return "OSD_FE_LANE"; 166 case QETH_LINK_TYPE_LANE_TR: 167 return "OSD_TR_LANE"; 168 case QETH_LINK_TYPE_LANE_ETH1000: 169 return "OSD_GbE_LANE"; 170 case QETH_LINK_TYPE_LANE: 171 return "OSD_ATM_LANE"; 172 default: 173 return "OSD_Express"; 174 } 175 case QETH_CARD_TYPE_IQD: 176 return "HiperSockets"; 177 case QETH_CARD_TYPE_OSN: 178 return "OSN"; 179 case QETH_CARD_TYPE_OSM: 180 return "OSM_1000"; 181 case QETH_CARD_TYPE_OSX: 182 return "OSX_10GIG"; 183 default: 184 return "unknown"; 185 } 186 } 187 return "n/a"; 188 } 189 190 void qeth_set_recovery_task(struct qeth_card *card) 191 { 192 card->recovery_task = current; 193 } 194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 195 196 void qeth_clear_recovery_task(struct qeth_card *card) 197 { 198 card->recovery_task = NULL; 199 } 200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 201 202 static bool qeth_is_recovery_task(const struct qeth_card *card) 203 { 204 return card->recovery_task == current; 205 } 206 207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 208 int clear_start_mask) 209 { 210 unsigned long flags; 211 212 spin_lock_irqsave(&card->thread_mask_lock, flags); 213 card->thread_allowed_mask = threads; 214 if (clear_start_mask) 215 card->thread_start_mask &= threads; 216 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 217 wake_up(&card->wait_q); 218 } 219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 220 221 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 222 { 223 unsigned long flags; 224 int rc = 0; 225 226 spin_lock_irqsave(&card->thread_mask_lock, flags); 227 rc = (card->thread_running_mask & threads); 228 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 229 return rc; 230 } 231 EXPORT_SYMBOL_GPL(qeth_threads_running); 232 233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 234 { 235 if (qeth_is_recovery_task(card)) 236 return 0; 237 return wait_event_interruptible(card->wait_q, 238 qeth_threads_running(card, threads) == 0); 239 } 240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 241 242 void qeth_clear_working_pool_list(struct qeth_card *card) 243 { 244 struct qeth_buffer_pool_entry *pool_entry, *tmp; 245 246 QETH_CARD_TEXT(card, 5, "clwrklst"); 247 list_for_each_entry_safe(pool_entry, tmp, 248 &card->qdio.in_buf_pool.entry_list, list){ 249 list_del(&pool_entry->list); 250 } 251 } 252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 253 254 static int qeth_alloc_buffer_pool(struct qeth_card *card) 255 { 256 struct qeth_buffer_pool_entry *pool_entry; 257 void *ptr; 258 int i, j; 259 260 QETH_CARD_TEXT(card, 5, "alocpool"); 261 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 262 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 263 if (!pool_entry) { 264 qeth_free_buffer_pool(card); 265 return -ENOMEM; 266 } 267 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 268 ptr = (void *) __get_free_page(GFP_KERNEL); 269 if (!ptr) { 270 while (j > 0) 271 free_page((unsigned long) 272 pool_entry->elements[--j]); 273 kfree(pool_entry); 274 qeth_free_buffer_pool(card); 275 return -ENOMEM; 276 } 277 pool_entry->elements[j] = ptr; 278 } 279 list_add(&pool_entry->init_list, 280 &card->qdio.init_pool.entry_list); 281 } 282 return 0; 283 } 284 285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 286 { 287 QETH_CARD_TEXT(card, 2, "realcbp"); 288 289 if ((card->state != CARD_STATE_DOWN) && 290 (card->state != CARD_STATE_RECOVER)) 291 return -EPERM; 292 293 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 294 qeth_clear_working_pool_list(card); 295 qeth_free_buffer_pool(card); 296 card->qdio.in_buf_pool.buf_count = bufcnt; 297 card->qdio.init_pool.buf_count = bufcnt; 298 return qeth_alloc_buffer_pool(card); 299 } 300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 301 302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 303 { 304 if (!q) 305 return; 306 307 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 308 kfree(q); 309 } 310 311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 312 { 313 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 314 int i; 315 316 if (!q) 317 return NULL; 318 319 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 320 kfree(q); 321 return NULL; 322 } 323 324 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 325 q->bufs[i].buffer = q->qdio_bufs[i]; 326 327 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 328 return q; 329 } 330 331 static inline int qeth_cq_init(struct qeth_card *card) 332 { 333 int rc; 334 335 if (card->options.cq == QETH_CQ_ENABLED) { 336 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 337 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 338 QDIO_MAX_BUFFERS_PER_Q); 339 card->qdio.c_q->next_buf_to_init = 127; 340 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 341 card->qdio.no_in_queues - 1, 0, 342 127); 343 if (rc) { 344 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 345 goto out; 346 } 347 } 348 rc = 0; 349 out: 350 return rc; 351 } 352 353 static inline int qeth_alloc_cq(struct qeth_card *card) 354 { 355 int rc; 356 357 if (card->options.cq == QETH_CQ_ENABLED) { 358 int i; 359 struct qdio_outbuf_state *outbuf_states; 360 361 QETH_DBF_TEXT(SETUP, 2, "cqon"); 362 card->qdio.c_q = qeth_alloc_qdio_queue(); 363 if (!card->qdio.c_q) { 364 rc = -1; 365 goto kmsg_out; 366 } 367 card->qdio.no_in_queues = 2; 368 card->qdio.out_bufstates = 369 kzalloc(card->qdio.no_out_queues * 370 QDIO_MAX_BUFFERS_PER_Q * 371 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 372 outbuf_states = card->qdio.out_bufstates; 373 if (outbuf_states == NULL) { 374 rc = -1; 375 goto free_cq_out; 376 } 377 for (i = 0; i < card->qdio.no_out_queues; ++i) { 378 card->qdio.out_qs[i]->bufstates = outbuf_states; 379 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 380 } 381 } else { 382 QETH_DBF_TEXT(SETUP, 2, "nocq"); 383 card->qdio.c_q = NULL; 384 card->qdio.no_in_queues = 1; 385 } 386 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 387 rc = 0; 388 out: 389 return rc; 390 free_cq_out: 391 qeth_free_qdio_queue(card->qdio.c_q); 392 card->qdio.c_q = NULL; 393 kmsg_out: 394 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 395 goto out; 396 } 397 398 static inline void qeth_free_cq(struct qeth_card *card) 399 { 400 if (card->qdio.c_q) { 401 --card->qdio.no_in_queues; 402 qeth_free_qdio_queue(card->qdio.c_q); 403 card->qdio.c_q = NULL; 404 } 405 kfree(card->qdio.out_bufstates); 406 card->qdio.out_bufstates = NULL; 407 } 408 409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 410 int delayed) { 411 enum iucv_tx_notify n; 412 413 switch (sbalf15) { 414 case 0: 415 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 416 break; 417 case 4: 418 case 16: 419 case 17: 420 case 18: 421 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 422 TX_NOTIFY_UNREACHABLE; 423 break; 424 default: 425 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 426 TX_NOTIFY_GENERALERROR; 427 break; 428 } 429 430 return n; 431 } 432 433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, 434 int bidx, int forced_cleanup) 435 { 436 if (q->card->options.cq != QETH_CQ_ENABLED) 437 return; 438 439 if (q->bufs[bidx]->next_pending != NULL) { 440 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 441 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 442 443 while (c) { 444 if (forced_cleanup || 445 atomic_read(&c->state) == 446 QETH_QDIO_BUF_HANDLED_DELAYED) { 447 struct qeth_qdio_out_buffer *f = c; 448 QETH_CARD_TEXT(f->q->card, 5, "fp"); 449 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 450 /* release here to avoid interleaving between 451 outbound tasklet and inbound tasklet 452 regarding notifications and lifecycle */ 453 qeth_release_skbs(c); 454 455 c = f->next_pending; 456 WARN_ON_ONCE(head->next_pending != f); 457 head->next_pending = c; 458 kmem_cache_free(qeth_qdio_outbuf_cache, f); 459 } else { 460 head = c; 461 c = c->next_pending; 462 } 463 464 } 465 } 466 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 467 QETH_QDIO_BUF_HANDLED_DELAYED)) { 468 /* for recovery situations */ 469 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 470 qeth_init_qdio_out_buf(q, bidx); 471 QETH_CARD_TEXT(q->card, 2, "clprecov"); 472 } 473 } 474 475 476 static inline void qeth_qdio_handle_aob(struct qeth_card *card, 477 unsigned long phys_aob_addr) { 478 struct qaob *aob; 479 struct qeth_qdio_out_buffer *buffer; 480 enum iucv_tx_notify notification; 481 482 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 483 QETH_CARD_TEXT(card, 5, "haob"); 484 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 485 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 486 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 487 488 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 489 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 490 notification = TX_NOTIFY_OK; 491 } else { 492 WARN_ON_ONCE(atomic_read(&buffer->state) != 493 QETH_QDIO_BUF_PENDING); 494 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 495 notification = TX_NOTIFY_DELAYED_OK; 496 } 497 498 if (aob->aorc != 0) { 499 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 500 notification = qeth_compute_cq_notification(aob->aorc, 1); 501 } 502 qeth_notify_skbs(buffer->q, buffer, notification); 503 504 buffer->aob = NULL; 505 qeth_clear_output_buffer(buffer->q, buffer, 506 QETH_QDIO_BUF_HANDLED_DELAYED); 507 508 /* from here on: do not touch buffer anymore */ 509 qdio_release_aob(aob); 510 } 511 512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 513 { 514 return card->options.cq == QETH_CQ_ENABLED && 515 card->qdio.c_q != NULL && 516 queue != 0 && 517 queue == card->qdio.no_in_queues - 1; 518 } 519 520 521 static int qeth_issue_next_read(struct qeth_card *card) 522 { 523 int rc; 524 struct qeth_cmd_buffer *iob; 525 526 QETH_CARD_TEXT(card, 5, "issnxrd"); 527 if (card->read.state != CH_STATE_UP) 528 return -EIO; 529 iob = qeth_get_buffer(&card->read); 530 if (!iob) { 531 dev_warn(&card->gdev->dev, "The qeth device driver " 532 "failed to recover an error on the device\n"); 533 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 534 "available\n", dev_name(&card->gdev->dev)); 535 return -ENOMEM; 536 } 537 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 538 QETH_CARD_TEXT(card, 6, "noirqpnd"); 539 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 540 (addr_t) iob, 0, 0); 541 if (rc) { 542 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 543 "rc=%i\n", dev_name(&card->gdev->dev), rc); 544 atomic_set(&card->read.irq_pending, 0); 545 card->read_or_write_problem = 1; 546 qeth_schedule_recovery(card); 547 wake_up(&card->wait_q); 548 } 549 return rc; 550 } 551 552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 553 { 554 struct qeth_reply *reply; 555 556 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 557 if (reply) { 558 atomic_set(&reply->refcnt, 1); 559 atomic_set(&reply->received, 0); 560 reply->card = card; 561 } 562 return reply; 563 } 564 565 static void qeth_get_reply(struct qeth_reply *reply) 566 { 567 WARN_ON(atomic_read(&reply->refcnt) <= 0); 568 atomic_inc(&reply->refcnt); 569 } 570 571 static void qeth_put_reply(struct qeth_reply *reply) 572 { 573 WARN_ON(atomic_read(&reply->refcnt) <= 0); 574 if (atomic_dec_and_test(&reply->refcnt)) 575 kfree(reply); 576 } 577 578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 579 struct qeth_card *card) 580 { 581 char *ipa_name; 582 int com = cmd->hdr.command; 583 ipa_name = qeth_get_ipa_cmd_name(com); 584 if (rc) 585 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 586 "x%X \"%s\"\n", 587 ipa_name, com, dev_name(&card->gdev->dev), 588 QETH_CARD_IFNAME(card), rc, 589 qeth_get_ipa_msg(rc)); 590 else 591 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 592 ipa_name, com, dev_name(&card->gdev->dev), 593 QETH_CARD_IFNAME(card)); 594 } 595 596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 597 struct qeth_cmd_buffer *iob) 598 { 599 struct qeth_ipa_cmd *cmd = NULL; 600 601 QETH_CARD_TEXT(card, 5, "chkipad"); 602 if (IS_IPA(iob->data)) { 603 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 604 if (IS_IPA_REPLY(cmd)) { 605 if (cmd->hdr.command != IPA_CMD_SETCCID && 606 cmd->hdr.command != IPA_CMD_DELCCID && 607 cmd->hdr.command != IPA_CMD_MODCCID && 608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 609 qeth_issue_ipa_msg(cmd, 610 cmd->hdr.return_code, card); 611 return cmd; 612 } else { 613 switch (cmd->hdr.command) { 614 case IPA_CMD_STOPLAN: 615 if (cmd->hdr.return_code == 616 IPA_RC_VEPA_TO_VEB_TRANSITION) { 617 dev_err(&card->gdev->dev, 618 "Interface %s is down because the " 619 "adjacent port is no longer in " 620 "reflective relay mode\n", 621 QETH_CARD_IFNAME(card)); 622 qeth_close_dev(card); 623 } else { 624 dev_warn(&card->gdev->dev, 625 "The link for interface %s on CHPID" 626 " 0x%X failed\n", 627 QETH_CARD_IFNAME(card), 628 card->info.chpid); 629 qeth_issue_ipa_msg(cmd, 630 cmd->hdr.return_code, card); 631 } 632 card->lan_online = 0; 633 if (card->dev && netif_carrier_ok(card->dev)) 634 netif_carrier_off(card->dev); 635 return NULL; 636 case IPA_CMD_STARTLAN: 637 dev_info(&card->gdev->dev, 638 "The link for %s on CHPID 0x%X has" 639 " been restored\n", 640 QETH_CARD_IFNAME(card), 641 card->info.chpid); 642 netif_carrier_on(card->dev); 643 card->lan_online = 1; 644 if (card->info.hwtrap) 645 card->info.hwtrap = 2; 646 qeth_schedule_recovery(card); 647 return NULL; 648 case IPA_CMD_SETBRIDGEPORT: 649 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 650 if (card->discipline->control_event_handler 651 (card, cmd)) 652 return cmd; 653 else 654 return NULL; 655 case IPA_CMD_MODCCID: 656 return cmd; 657 case IPA_CMD_REGISTER_LOCAL_ADDR: 658 QETH_CARD_TEXT(card, 3, "irla"); 659 break; 660 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 661 QETH_CARD_TEXT(card, 3, "urla"); 662 break; 663 default: 664 QETH_DBF_MESSAGE(2, "Received data is IPA " 665 "but not a reply!\n"); 666 break; 667 } 668 } 669 } 670 return cmd; 671 } 672 673 void qeth_clear_ipacmd_list(struct qeth_card *card) 674 { 675 struct qeth_reply *reply, *r; 676 unsigned long flags; 677 678 QETH_CARD_TEXT(card, 4, "clipalst"); 679 680 spin_lock_irqsave(&card->lock, flags); 681 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 682 qeth_get_reply(reply); 683 reply->rc = -EIO; 684 atomic_inc(&reply->received); 685 list_del_init(&reply->list); 686 wake_up(&reply->wait_q); 687 qeth_put_reply(reply); 688 } 689 spin_unlock_irqrestore(&card->lock, flags); 690 atomic_set(&card->write.irq_pending, 0); 691 } 692 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 693 694 static int qeth_check_idx_response(struct qeth_card *card, 695 unsigned char *buffer) 696 { 697 if (!buffer) 698 return 0; 699 700 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 701 if ((buffer[2] & 0xc0) == 0xc0) { 702 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 703 "with cause code 0x%02x%s\n", 704 buffer[4], 705 ((buffer[4] == 0x22) ? 706 " -- try another portname" : "")); 707 QETH_CARD_TEXT(card, 2, "ckidxres"); 708 QETH_CARD_TEXT(card, 2, " idxterm"); 709 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 710 if (buffer[4] == 0xf6) { 711 dev_err(&card->gdev->dev, 712 "The qeth device is not configured " 713 "for the OSI layer required by z/VM\n"); 714 return -EPERM; 715 } 716 return -EIO; 717 } 718 return 0; 719 } 720 721 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 722 __u32 len) 723 { 724 struct qeth_card *card; 725 726 card = CARD_FROM_CDEV(channel->ccwdev); 727 QETH_CARD_TEXT(card, 4, "setupccw"); 728 if (channel == &card->read) 729 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 730 else 731 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 732 channel->ccw.count = len; 733 channel->ccw.cda = (__u32) __pa(iob); 734 } 735 736 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 737 { 738 __u8 index; 739 740 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 741 index = channel->io_buf_no; 742 do { 743 if (channel->iob[index].state == BUF_STATE_FREE) { 744 channel->iob[index].state = BUF_STATE_LOCKED; 745 channel->io_buf_no = (channel->io_buf_no + 1) % 746 QETH_CMD_BUFFER_NO; 747 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 748 return channel->iob + index; 749 } 750 index = (index + 1) % QETH_CMD_BUFFER_NO; 751 } while (index != channel->io_buf_no); 752 753 return NULL; 754 } 755 756 void qeth_release_buffer(struct qeth_channel *channel, 757 struct qeth_cmd_buffer *iob) 758 { 759 unsigned long flags; 760 761 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 762 spin_lock_irqsave(&channel->iob_lock, flags); 763 memset(iob->data, 0, QETH_BUFSIZE); 764 iob->state = BUF_STATE_FREE; 765 iob->callback = qeth_send_control_data_cb; 766 iob->rc = 0; 767 spin_unlock_irqrestore(&channel->iob_lock, flags); 768 wake_up(&channel->wait_q); 769 } 770 EXPORT_SYMBOL_GPL(qeth_release_buffer); 771 772 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 773 { 774 struct qeth_cmd_buffer *buffer = NULL; 775 unsigned long flags; 776 777 spin_lock_irqsave(&channel->iob_lock, flags); 778 buffer = __qeth_get_buffer(channel); 779 spin_unlock_irqrestore(&channel->iob_lock, flags); 780 return buffer; 781 } 782 783 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 784 { 785 struct qeth_cmd_buffer *buffer; 786 wait_event(channel->wait_q, 787 ((buffer = qeth_get_buffer(channel)) != NULL)); 788 return buffer; 789 } 790 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 791 792 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 793 { 794 int cnt; 795 796 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 797 qeth_release_buffer(channel, &channel->iob[cnt]); 798 channel->buf_no = 0; 799 channel->io_buf_no = 0; 800 } 801 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 802 803 static void qeth_send_control_data_cb(struct qeth_channel *channel, 804 struct qeth_cmd_buffer *iob) 805 { 806 struct qeth_card *card; 807 struct qeth_reply *reply, *r; 808 struct qeth_ipa_cmd *cmd; 809 unsigned long flags; 810 int keep_reply; 811 int rc = 0; 812 813 card = CARD_FROM_CDEV(channel->ccwdev); 814 QETH_CARD_TEXT(card, 4, "sndctlcb"); 815 rc = qeth_check_idx_response(card, iob->data); 816 switch (rc) { 817 case 0: 818 break; 819 case -EIO: 820 qeth_clear_ipacmd_list(card); 821 qeth_schedule_recovery(card); 822 /* fall through */ 823 default: 824 goto out; 825 } 826 827 cmd = qeth_check_ipa_data(card, iob); 828 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 829 goto out; 830 /*in case of OSN : check if cmd is set */ 831 if (card->info.type == QETH_CARD_TYPE_OSN && 832 cmd && 833 cmd->hdr.command != IPA_CMD_STARTLAN && 834 card->osn_info.assist_cb != NULL) { 835 card->osn_info.assist_cb(card->dev, cmd); 836 goto out; 837 } 838 839 spin_lock_irqsave(&card->lock, flags); 840 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 841 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 842 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 843 qeth_get_reply(reply); 844 list_del_init(&reply->list); 845 spin_unlock_irqrestore(&card->lock, flags); 846 keep_reply = 0; 847 if (reply->callback != NULL) { 848 if (cmd) { 849 reply->offset = (__u16)((char *)cmd - 850 (char *)iob->data); 851 keep_reply = reply->callback(card, 852 reply, 853 (unsigned long)cmd); 854 } else 855 keep_reply = reply->callback(card, 856 reply, 857 (unsigned long)iob); 858 } 859 if (cmd) 860 reply->rc = (u16) cmd->hdr.return_code; 861 else if (iob->rc) 862 reply->rc = iob->rc; 863 if (keep_reply) { 864 spin_lock_irqsave(&card->lock, flags); 865 list_add_tail(&reply->list, 866 &card->cmd_waiter_list); 867 spin_unlock_irqrestore(&card->lock, flags); 868 } else { 869 atomic_inc(&reply->received); 870 wake_up(&reply->wait_q); 871 } 872 qeth_put_reply(reply); 873 goto out; 874 } 875 } 876 spin_unlock_irqrestore(&card->lock, flags); 877 out: 878 memcpy(&card->seqno.pdu_hdr_ack, 879 QETH_PDU_HEADER_SEQ_NO(iob->data), 880 QETH_SEQ_NO_LENGTH); 881 qeth_release_buffer(channel, iob); 882 } 883 884 static int qeth_setup_channel(struct qeth_channel *channel) 885 { 886 int cnt; 887 888 QETH_DBF_TEXT(SETUP, 2, "setupch"); 889 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 890 channel->iob[cnt].data = 891 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 892 if (channel->iob[cnt].data == NULL) 893 break; 894 channel->iob[cnt].state = BUF_STATE_FREE; 895 channel->iob[cnt].channel = channel; 896 channel->iob[cnt].callback = qeth_send_control_data_cb; 897 channel->iob[cnt].rc = 0; 898 } 899 if (cnt < QETH_CMD_BUFFER_NO) { 900 while (cnt-- > 0) 901 kfree(channel->iob[cnt].data); 902 return -ENOMEM; 903 } 904 channel->buf_no = 0; 905 channel->io_buf_no = 0; 906 atomic_set(&channel->irq_pending, 0); 907 spin_lock_init(&channel->iob_lock); 908 909 init_waitqueue_head(&channel->wait_q); 910 return 0; 911 } 912 913 static int qeth_set_thread_start_bit(struct qeth_card *card, 914 unsigned long thread) 915 { 916 unsigned long flags; 917 918 spin_lock_irqsave(&card->thread_mask_lock, flags); 919 if (!(card->thread_allowed_mask & thread) || 920 (card->thread_start_mask & thread)) { 921 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 922 return -EPERM; 923 } 924 card->thread_start_mask |= thread; 925 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 926 return 0; 927 } 928 929 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 930 { 931 unsigned long flags; 932 933 spin_lock_irqsave(&card->thread_mask_lock, flags); 934 card->thread_start_mask &= ~thread; 935 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 936 wake_up(&card->wait_q); 937 } 938 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 939 940 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 941 { 942 unsigned long flags; 943 944 spin_lock_irqsave(&card->thread_mask_lock, flags); 945 card->thread_running_mask &= ~thread; 946 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 947 wake_up(&card->wait_q); 948 } 949 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 950 951 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 952 { 953 unsigned long flags; 954 int rc = 0; 955 956 spin_lock_irqsave(&card->thread_mask_lock, flags); 957 if (card->thread_start_mask & thread) { 958 if ((card->thread_allowed_mask & thread) && 959 !(card->thread_running_mask & thread)) { 960 rc = 1; 961 card->thread_start_mask &= ~thread; 962 card->thread_running_mask |= thread; 963 } else 964 rc = -EPERM; 965 } 966 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 967 return rc; 968 } 969 970 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 971 { 972 int rc = 0; 973 974 wait_event(card->wait_q, 975 (rc = __qeth_do_run_thread(card, thread)) >= 0); 976 return rc; 977 } 978 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 979 980 void qeth_schedule_recovery(struct qeth_card *card) 981 { 982 QETH_CARD_TEXT(card, 2, "startrec"); 983 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 984 schedule_work(&card->kernel_thread_starter); 985 } 986 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 987 988 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 989 { 990 int dstat, cstat; 991 char *sense; 992 struct qeth_card *card; 993 994 sense = (char *) irb->ecw; 995 cstat = irb->scsw.cmd.cstat; 996 dstat = irb->scsw.cmd.dstat; 997 card = CARD_FROM_CDEV(cdev); 998 999 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1000 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1001 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1002 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1003 dev_warn(&cdev->dev, "The qeth device driver " 1004 "failed to recover an error on the device\n"); 1005 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1006 dev_name(&cdev->dev), dstat, cstat); 1007 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1008 16, 1, irb, 64, 1); 1009 return 1; 1010 } 1011 1012 if (dstat & DEV_STAT_UNIT_CHECK) { 1013 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1014 SENSE_RESETTING_EVENT_FLAG) { 1015 QETH_CARD_TEXT(card, 2, "REVIND"); 1016 return 1; 1017 } 1018 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1019 SENSE_COMMAND_REJECT_FLAG) { 1020 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1021 return 1; 1022 } 1023 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1024 QETH_CARD_TEXT(card, 2, "AFFE"); 1025 return 1; 1026 } 1027 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1028 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1029 return 0; 1030 } 1031 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1032 return 1; 1033 } 1034 return 0; 1035 } 1036 1037 static long __qeth_check_irb_error(struct ccw_device *cdev, 1038 unsigned long intparm, struct irb *irb) 1039 { 1040 struct qeth_card *card; 1041 1042 card = CARD_FROM_CDEV(cdev); 1043 1044 if (!card || !IS_ERR(irb)) 1045 return 0; 1046 1047 switch (PTR_ERR(irb)) { 1048 case -EIO: 1049 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1050 dev_name(&cdev->dev)); 1051 QETH_CARD_TEXT(card, 2, "ckirberr"); 1052 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1053 break; 1054 case -ETIMEDOUT: 1055 dev_warn(&cdev->dev, "A hardware operation timed out" 1056 " on the device\n"); 1057 QETH_CARD_TEXT(card, 2, "ckirberr"); 1058 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1059 if (intparm == QETH_RCD_PARM) { 1060 if (card->data.ccwdev == cdev) { 1061 card->data.state = CH_STATE_DOWN; 1062 wake_up(&card->wait_q); 1063 } 1064 } 1065 break; 1066 default: 1067 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1068 dev_name(&cdev->dev), PTR_ERR(irb)); 1069 QETH_CARD_TEXT(card, 2, "ckirberr"); 1070 QETH_CARD_TEXT(card, 2, " rc???"); 1071 } 1072 return PTR_ERR(irb); 1073 } 1074 1075 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1076 struct irb *irb) 1077 { 1078 int rc; 1079 int cstat, dstat; 1080 struct qeth_cmd_buffer *buffer; 1081 struct qeth_channel *channel; 1082 struct qeth_card *card; 1083 struct qeth_cmd_buffer *iob; 1084 __u8 index; 1085 1086 if (__qeth_check_irb_error(cdev, intparm, irb)) 1087 return; 1088 cstat = irb->scsw.cmd.cstat; 1089 dstat = irb->scsw.cmd.dstat; 1090 1091 card = CARD_FROM_CDEV(cdev); 1092 if (!card) 1093 return; 1094 1095 QETH_CARD_TEXT(card, 5, "irq"); 1096 1097 if (card->read.ccwdev == cdev) { 1098 channel = &card->read; 1099 QETH_CARD_TEXT(card, 5, "read"); 1100 } else if (card->write.ccwdev == cdev) { 1101 channel = &card->write; 1102 QETH_CARD_TEXT(card, 5, "write"); 1103 } else { 1104 channel = &card->data; 1105 QETH_CARD_TEXT(card, 5, "data"); 1106 } 1107 atomic_set(&channel->irq_pending, 0); 1108 1109 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1110 channel->state = CH_STATE_STOPPED; 1111 1112 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1113 channel->state = CH_STATE_HALTED; 1114 1115 /*let's wake up immediately on data channel*/ 1116 if ((channel == &card->data) && (intparm != 0) && 1117 (intparm != QETH_RCD_PARM)) 1118 goto out; 1119 1120 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1121 QETH_CARD_TEXT(card, 6, "clrchpar"); 1122 /* we don't have to handle this further */ 1123 intparm = 0; 1124 } 1125 if (intparm == QETH_HALT_CHANNEL_PARM) { 1126 QETH_CARD_TEXT(card, 6, "hltchpar"); 1127 /* we don't have to handle this further */ 1128 intparm = 0; 1129 } 1130 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1131 (dstat & DEV_STAT_UNIT_CHECK) || 1132 (cstat)) { 1133 if (irb->esw.esw0.erw.cons) { 1134 dev_warn(&channel->ccwdev->dev, 1135 "The qeth device driver failed to recover " 1136 "an error on the device\n"); 1137 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1138 "0x%X dstat 0x%X\n", 1139 dev_name(&channel->ccwdev->dev), cstat, dstat); 1140 print_hex_dump(KERN_WARNING, "qeth: irb ", 1141 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1142 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1143 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1144 } 1145 if (intparm == QETH_RCD_PARM) { 1146 channel->state = CH_STATE_DOWN; 1147 goto out; 1148 } 1149 rc = qeth_get_problem(cdev, irb); 1150 if (rc) { 1151 qeth_clear_ipacmd_list(card); 1152 qeth_schedule_recovery(card); 1153 goto out; 1154 } 1155 } 1156 1157 if (intparm == QETH_RCD_PARM) { 1158 channel->state = CH_STATE_RCD_DONE; 1159 goto out; 1160 } 1161 if (intparm) { 1162 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1163 buffer->state = BUF_STATE_PROCESSED; 1164 } 1165 if (channel == &card->data) 1166 return; 1167 if (channel == &card->read && 1168 channel->state == CH_STATE_UP) 1169 qeth_issue_next_read(card); 1170 1171 iob = channel->iob; 1172 index = channel->buf_no; 1173 while (iob[index].state == BUF_STATE_PROCESSED) { 1174 if (iob[index].callback != NULL) 1175 iob[index].callback(channel, iob + index); 1176 1177 index = (index + 1) % QETH_CMD_BUFFER_NO; 1178 } 1179 channel->buf_no = index; 1180 out: 1181 wake_up(&card->wait_q); 1182 return; 1183 } 1184 1185 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1186 struct qeth_qdio_out_buffer *buf, 1187 enum iucv_tx_notify notification) 1188 { 1189 struct sk_buff *skb; 1190 1191 if (skb_queue_empty(&buf->skb_list)) 1192 goto out; 1193 skb = skb_peek(&buf->skb_list); 1194 while (skb) { 1195 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1196 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1197 if (skb->protocol == ETH_P_AF_IUCV) { 1198 if (skb->sk) { 1199 struct iucv_sock *iucv = iucv_sk(skb->sk); 1200 iucv->sk_txnotify(skb, notification); 1201 } 1202 } 1203 if (skb_queue_is_last(&buf->skb_list, skb)) 1204 skb = NULL; 1205 else 1206 skb = skb_queue_next(&buf->skb_list, skb); 1207 } 1208 out: 1209 return; 1210 } 1211 1212 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1213 { 1214 struct sk_buff *skb; 1215 struct iucv_sock *iucv; 1216 int notify_general_error = 0; 1217 1218 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1219 notify_general_error = 1; 1220 1221 /* release may never happen from within CQ tasklet scope */ 1222 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1223 1224 skb = skb_dequeue(&buf->skb_list); 1225 while (skb) { 1226 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1227 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1228 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) { 1229 if (skb->sk) { 1230 iucv = iucv_sk(skb->sk); 1231 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1232 } 1233 } 1234 atomic_dec(&skb->users); 1235 dev_kfree_skb_any(skb); 1236 skb = skb_dequeue(&buf->skb_list); 1237 } 1238 } 1239 1240 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1241 struct qeth_qdio_out_buffer *buf, 1242 enum qeth_qdio_buffer_states newbufstate) 1243 { 1244 int i; 1245 1246 /* is PCI flag set on buffer? */ 1247 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1248 atomic_dec(&queue->set_pci_flags_count); 1249 1250 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1251 qeth_release_skbs(buf); 1252 } 1253 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1254 if (buf->buffer->element[i].addr && buf->is_header[i]) 1255 kmem_cache_free(qeth_core_header_cache, 1256 buf->buffer->element[i].addr); 1257 buf->is_header[i] = 0; 1258 buf->buffer->element[i].length = 0; 1259 buf->buffer->element[i].addr = NULL; 1260 buf->buffer->element[i].eflags = 0; 1261 buf->buffer->element[i].sflags = 0; 1262 } 1263 buf->buffer->element[15].eflags = 0; 1264 buf->buffer->element[15].sflags = 0; 1265 buf->next_element_to_fill = 0; 1266 atomic_set(&buf->state, newbufstate); 1267 } 1268 1269 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1270 { 1271 int j; 1272 1273 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1274 if (!q->bufs[j]) 1275 continue; 1276 qeth_cleanup_handled_pending(q, j, 1); 1277 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1278 if (free) { 1279 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1280 q->bufs[j] = NULL; 1281 } 1282 } 1283 } 1284 1285 void qeth_clear_qdio_buffers(struct qeth_card *card) 1286 { 1287 int i; 1288 1289 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1290 /* clear outbound buffers to free skbs */ 1291 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1292 if (card->qdio.out_qs[i]) { 1293 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1294 } 1295 } 1296 } 1297 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1298 1299 static void qeth_free_buffer_pool(struct qeth_card *card) 1300 { 1301 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1302 int i = 0; 1303 list_for_each_entry_safe(pool_entry, tmp, 1304 &card->qdio.init_pool.entry_list, init_list){ 1305 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1306 free_page((unsigned long)pool_entry->elements[i]); 1307 list_del(&pool_entry->init_list); 1308 kfree(pool_entry); 1309 } 1310 } 1311 1312 static void qeth_clean_channel(struct qeth_channel *channel) 1313 { 1314 int cnt; 1315 1316 QETH_DBF_TEXT(SETUP, 2, "freech"); 1317 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1318 kfree(channel->iob[cnt].data); 1319 } 1320 1321 static void qeth_set_single_write_queues(struct qeth_card *card) 1322 { 1323 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1324 (card->qdio.no_out_queues == 4)) 1325 qeth_free_qdio_buffers(card); 1326 1327 card->qdio.no_out_queues = 1; 1328 if (card->qdio.default_out_queue != 0) 1329 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1330 1331 card->qdio.default_out_queue = 0; 1332 } 1333 1334 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1335 { 1336 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1337 (card->qdio.no_out_queues == 1)) { 1338 qeth_free_qdio_buffers(card); 1339 card->qdio.default_out_queue = 2; 1340 } 1341 card->qdio.no_out_queues = 4; 1342 } 1343 1344 static void qeth_update_from_chp_desc(struct qeth_card *card) 1345 { 1346 struct ccw_device *ccwdev; 1347 struct channel_path_desc *chp_dsc; 1348 1349 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1350 1351 ccwdev = card->data.ccwdev; 1352 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1353 if (!chp_dsc) 1354 goto out; 1355 1356 card->info.func_level = 0x4100 + chp_dsc->desc; 1357 if (card->info.type == QETH_CARD_TYPE_IQD) 1358 goto out; 1359 1360 /* CHPP field bit 6 == 1 -> single queue */ 1361 if ((chp_dsc->chpp & 0x02) == 0x02) 1362 qeth_set_single_write_queues(card); 1363 else 1364 qeth_set_multiple_write_queues(card); 1365 out: 1366 kfree(chp_dsc); 1367 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1368 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1369 } 1370 1371 static void qeth_init_qdio_info(struct qeth_card *card) 1372 { 1373 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1374 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1375 /* inbound */ 1376 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1377 if (card->info.type == QETH_CARD_TYPE_IQD) 1378 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1379 else 1380 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1381 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1382 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1383 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1384 } 1385 1386 static void qeth_set_intial_options(struct qeth_card *card) 1387 { 1388 card->options.route4.type = NO_ROUTER; 1389 card->options.route6.type = NO_ROUTER; 1390 card->options.fake_broadcast = 0; 1391 card->options.add_hhlen = DEFAULT_ADD_HHLEN; 1392 card->options.performance_stats = 0; 1393 card->options.rx_sg_cb = QETH_RX_SG_CB; 1394 card->options.isolation = ISOLATION_MODE_NONE; 1395 card->options.cq = QETH_CQ_DISABLED; 1396 } 1397 1398 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1399 { 1400 unsigned long flags; 1401 int rc = 0; 1402 1403 spin_lock_irqsave(&card->thread_mask_lock, flags); 1404 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1405 (u8) card->thread_start_mask, 1406 (u8) card->thread_allowed_mask, 1407 (u8) card->thread_running_mask); 1408 rc = (card->thread_start_mask & thread); 1409 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1410 return rc; 1411 } 1412 1413 static void qeth_start_kernel_thread(struct work_struct *work) 1414 { 1415 struct task_struct *ts; 1416 struct qeth_card *card = container_of(work, struct qeth_card, 1417 kernel_thread_starter); 1418 QETH_CARD_TEXT(card , 2, "strthrd"); 1419 1420 if (card->read.state != CH_STATE_UP && 1421 card->write.state != CH_STATE_UP) 1422 return; 1423 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1424 ts = kthread_run(card->discipline->recover, (void *)card, 1425 "qeth_recover"); 1426 if (IS_ERR(ts)) { 1427 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1428 qeth_clear_thread_running_bit(card, 1429 QETH_RECOVER_THREAD); 1430 } 1431 } 1432 } 1433 1434 static int qeth_setup_card(struct qeth_card *card) 1435 { 1436 1437 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1438 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1439 1440 card->read.state = CH_STATE_DOWN; 1441 card->write.state = CH_STATE_DOWN; 1442 card->data.state = CH_STATE_DOWN; 1443 card->state = CARD_STATE_DOWN; 1444 card->lan_online = 0; 1445 card->read_or_write_problem = 0; 1446 card->dev = NULL; 1447 spin_lock_init(&card->vlanlock); 1448 spin_lock_init(&card->mclock); 1449 spin_lock_init(&card->lock); 1450 spin_lock_init(&card->ip_lock); 1451 spin_lock_init(&card->thread_mask_lock); 1452 mutex_init(&card->conf_mutex); 1453 mutex_init(&card->discipline_mutex); 1454 card->thread_start_mask = 0; 1455 card->thread_allowed_mask = 0; 1456 card->thread_running_mask = 0; 1457 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1458 INIT_LIST_HEAD(&card->ip_list); 1459 INIT_LIST_HEAD(card->ip_tbd_list); 1460 INIT_LIST_HEAD(&card->cmd_waiter_list); 1461 init_waitqueue_head(&card->wait_q); 1462 /* initial options */ 1463 qeth_set_intial_options(card); 1464 /* IP address takeover */ 1465 INIT_LIST_HEAD(&card->ipato.entries); 1466 card->ipato.enabled = 0; 1467 card->ipato.invert4 = 0; 1468 card->ipato.invert6 = 0; 1469 /* init QDIO stuff */ 1470 qeth_init_qdio_info(card); 1471 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1472 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1473 return 0; 1474 } 1475 1476 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1477 { 1478 struct qeth_card *card = container_of(slr, struct qeth_card, 1479 qeth_service_level); 1480 if (card->info.mcl_level[0]) 1481 seq_printf(m, "qeth: %s firmware level %s\n", 1482 CARD_BUS_ID(card), card->info.mcl_level); 1483 } 1484 1485 static struct qeth_card *qeth_alloc_card(void) 1486 { 1487 struct qeth_card *card; 1488 1489 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1490 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1491 if (!card) 1492 goto out; 1493 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1494 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL); 1495 if (!card->ip_tbd_list) { 1496 QETH_DBF_TEXT(SETUP, 0, "iptbdnom"); 1497 goto out_card; 1498 } 1499 if (qeth_setup_channel(&card->read)) 1500 goto out_ip; 1501 if (qeth_setup_channel(&card->write)) 1502 goto out_channel; 1503 card->options.layer2 = -1; 1504 card->qeth_service_level.seq_print = qeth_core_sl_print; 1505 register_service_level(&card->qeth_service_level); 1506 return card; 1507 1508 out_channel: 1509 qeth_clean_channel(&card->read); 1510 out_ip: 1511 kfree(card->ip_tbd_list); 1512 out_card: 1513 kfree(card); 1514 out: 1515 return NULL; 1516 } 1517 1518 static int qeth_determine_card_type(struct qeth_card *card) 1519 { 1520 int i = 0; 1521 1522 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1523 1524 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1525 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1526 while (known_devices[i][QETH_DEV_MODEL_IND]) { 1527 if ((CARD_RDEV(card)->id.dev_type == 1528 known_devices[i][QETH_DEV_TYPE_IND]) && 1529 (CARD_RDEV(card)->id.dev_model == 1530 known_devices[i][QETH_DEV_MODEL_IND])) { 1531 card->info.type = known_devices[i][QETH_DEV_MODEL_IND]; 1532 card->qdio.no_out_queues = 1533 known_devices[i][QETH_QUEUE_NO_IND]; 1534 card->qdio.no_in_queues = 1; 1535 card->info.is_multicast_different = 1536 known_devices[i][QETH_MULTICAST_IND]; 1537 qeth_update_from_chp_desc(card); 1538 return 0; 1539 } 1540 i++; 1541 } 1542 card->info.type = QETH_CARD_TYPE_UNKNOWN; 1543 dev_err(&card->gdev->dev, "The adapter hardware is of an " 1544 "unknown type\n"); 1545 return -ENOENT; 1546 } 1547 1548 static int qeth_clear_channel(struct qeth_channel *channel) 1549 { 1550 unsigned long flags; 1551 struct qeth_card *card; 1552 int rc; 1553 1554 card = CARD_FROM_CDEV(channel->ccwdev); 1555 QETH_CARD_TEXT(card, 3, "clearch"); 1556 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1557 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1558 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1559 1560 if (rc) 1561 return rc; 1562 rc = wait_event_interruptible_timeout(card->wait_q, 1563 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1564 if (rc == -ERESTARTSYS) 1565 return rc; 1566 if (channel->state != CH_STATE_STOPPED) 1567 return -ETIME; 1568 channel->state = CH_STATE_DOWN; 1569 return 0; 1570 } 1571 1572 static int qeth_halt_channel(struct qeth_channel *channel) 1573 { 1574 unsigned long flags; 1575 struct qeth_card *card; 1576 int rc; 1577 1578 card = CARD_FROM_CDEV(channel->ccwdev); 1579 QETH_CARD_TEXT(card, 3, "haltch"); 1580 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1581 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1582 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1583 1584 if (rc) 1585 return rc; 1586 rc = wait_event_interruptible_timeout(card->wait_q, 1587 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1588 if (rc == -ERESTARTSYS) 1589 return rc; 1590 if (channel->state != CH_STATE_HALTED) 1591 return -ETIME; 1592 return 0; 1593 } 1594 1595 static int qeth_halt_channels(struct qeth_card *card) 1596 { 1597 int rc1 = 0, rc2 = 0, rc3 = 0; 1598 1599 QETH_CARD_TEXT(card, 3, "haltchs"); 1600 rc1 = qeth_halt_channel(&card->read); 1601 rc2 = qeth_halt_channel(&card->write); 1602 rc3 = qeth_halt_channel(&card->data); 1603 if (rc1) 1604 return rc1; 1605 if (rc2) 1606 return rc2; 1607 return rc3; 1608 } 1609 1610 static int qeth_clear_channels(struct qeth_card *card) 1611 { 1612 int rc1 = 0, rc2 = 0, rc3 = 0; 1613 1614 QETH_CARD_TEXT(card, 3, "clearchs"); 1615 rc1 = qeth_clear_channel(&card->read); 1616 rc2 = qeth_clear_channel(&card->write); 1617 rc3 = qeth_clear_channel(&card->data); 1618 if (rc1) 1619 return rc1; 1620 if (rc2) 1621 return rc2; 1622 return rc3; 1623 } 1624 1625 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1626 { 1627 int rc = 0; 1628 1629 QETH_CARD_TEXT(card, 3, "clhacrd"); 1630 1631 if (halt) 1632 rc = qeth_halt_channels(card); 1633 if (rc) 1634 return rc; 1635 return qeth_clear_channels(card); 1636 } 1637 1638 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1639 { 1640 int rc = 0; 1641 1642 QETH_CARD_TEXT(card, 3, "qdioclr"); 1643 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1644 QETH_QDIO_CLEANING)) { 1645 case QETH_QDIO_ESTABLISHED: 1646 if (card->info.type == QETH_CARD_TYPE_IQD) 1647 rc = qdio_shutdown(CARD_DDEV(card), 1648 QDIO_FLAG_CLEANUP_USING_HALT); 1649 else 1650 rc = qdio_shutdown(CARD_DDEV(card), 1651 QDIO_FLAG_CLEANUP_USING_CLEAR); 1652 if (rc) 1653 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1654 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1655 break; 1656 case QETH_QDIO_CLEANING: 1657 return rc; 1658 default: 1659 break; 1660 } 1661 rc = qeth_clear_halt_card(card, use_halt); 1662 if (rc) 1663 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1664 card->state = CARD_STATE_DOWN; 1665 return rc; 1666 } 1667 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1668 1669 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1670 int *length) 1671 { 1672 struct ciw *ciw; 1673 char *rcd_buf; 1674 int ret; 1675 struct qeth_channel *channel = &card->data; 1676 unsigned long flags; 1677 1678 /* 1679 * scan for RCD command in extended SenseID data 1680 */ 1681 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1682 if (!ciw || ciw->cmd == 0) 1683 return -EOPNOTSUPP; 1684 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1685 if (!rcd_buf) 1686 return -ENOMEM; 1687 1688 channel->ccw.cmd_code = ciw->cmd; 1689 channel->ccw.cda = (__u32) __pa(rcd_buf); 1690 channel->ccw.count = ciw->count; 1691 channel->ccw.flags = CCW_FLAG_SLI; 1692 channel->state = CH_STATE_RCD; 1693 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1694 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1695 QETH_RCD_PARM, LPM_ANYPATH, 0, 1696 QETH_RCD_TIMEOUT); 1697 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1698 if (!ret) 1699 wait_event(card->wait_q, 1700 (channel->state == CH_STATE_RCD_DONE || 1701 channel->state == CH_STATE_DOWN)); 1702 if (channel->state == CH_STATE_DOWN) 1703 ret = -EIO; 1704 else 1705 channel->state = CH_STATE_DOWN; 1706 if (ret) { 1707 kfree(rcd_buf); 1708 *buffer = NULL; 1709 *length = 0; 1710 } else { 1711 *length = ciw->count; 1712 *buffer = rcd_buf; 1713 } 1714 return ret; 1715 } 1716 1717 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1718 { 1719 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1720 card->info.chpid = prcd[30]; 1721 card->info.unit_addr2 = prcd[31]; 1722 card->info.cula = prcd[63]; 1723 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1724 (prcd[0x11] == _ascebc['M'])); 1725 } 1726 1727 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1728 { 1729 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1730 1731 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1732 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1733 card->info.blkt.time_total = 0; 1734 card->info.blkt.inter_packet = 0; 1735 card->info.blkt.inter_packet_jumbo = 0; 1736 } else { 1737 card->info.blkt.time_total = 250; 1738 card->info.blkt.inter_packet = 5; 1739 card->info.blkt.inter_packet_jumbo = 15; 1740 } 1741 } 1742 1743 static void qeth_init_tokens(struct qeth_card *card) 1744 { 1745 card->token.issuer_rm_w = 0x00010103UL; 1746 card->token.cm_filter_w = 0x00010108UL; 1747 card->token.cm_connection_w = 0x0001010aUL; 1748 card->token.ulp_filter_w = 0x0001010bUL; 1749 card->token.ulp_connection_w = 0x0001010dUL; 1750 } 1751 1752 static void qeth_init_func_level(struct qeth_card *card) 1753 { 1754 switch (card->info.type) { 1755 case QETH_CARD_TYPE_IQD: 1756 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1757 break; 1758 case QETH_CARD_TYPE_OSD: 1759 case QETH_CARD_TYPE_OSN: 1760 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1761 break; 1762 default: 1763 break; 1764 } 1765 } 1766 1767 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1768 void (*idx_reply_cb)(struct qeth_channel *, 1769 struct qeth_cmd_buffer *)) 1770 { 1771 struct qeth_cmd_buffer *iob; 1772 unsigned long flags; 1773 int rc; 1774 struct qeth_card *card; 1775 1776 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1777 card = CARD_FROM_CDEV(channel->ccwdev); 1778 iob = qeth_get_buffer(channel); 1779 iob->callback = idx_reply_cb; 1780 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1781 channel->ccw.count = QETH_BUFSIZE; 1782 channel->ccw.cda = (__u32) __pa(iob->data); 1783 1784 wait_event(card->wait_q, 1785 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1786 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1787 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1788 rc = ccw_device_start(channel->ccwdev, 1789 &channel->ccw, (addr_t) iob, 0, 0); 1790 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1791 1792 if (rc) { 1793 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1794 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1795 atomic_set(&channel->irq_pending, 0); 1796 wake_up(&card->wait_q); 1797 return rc; 1798 } 1799 rc = wait_event_interruptible_timeout(card->wait_q, 1800 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1801 if (rc == -ERESTARTSYS) 1802 return rc; 1803 if (channel->state != CH_STATE_UP) { 1804 rc = -ETIME; 1805 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1806 qeth_clear_cmd_buffers(channel); 1807 } else 1808 rc = 0; 1809 return rc; 1810 } 1811 1812 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1813 void (*idx_reply_cb)(struct qeth_channel *, 1814 struct qeth_cmd_buffer *)) 1815 { 1816 struct qeth_card *card; 1817 struct qeth_cmd_buffer *iob; 1818 unsigned long flags; 1819 __u16 temp; 1820 __u8 tmp; 1821 int rc; 1822 struct ccw_dev_id temp_devid; 1823 1824 card = CARD_FROM_CDEV(channel->ccwdev); 1825 1826 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1827 1828 iob = qeth_get_buffer(channel); 1829 iob->callback = idx_reply_cb; 1830 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1831 channel->ccw.count = IDX_ACTIVATE_SIZE; 1832 channel->ccw.cda = (__u32) __pa(iob->data); 1833 if (channel == &card->write) { 1834 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1835 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1836 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1837 card->seqno.trans_hdr++; 1838 } else { 1839 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1840 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1841 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1842 } 1843 tmp = ((__u8)card->info.portno) | 0x80; 1844 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1845 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1846 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1847 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1848 &card->info.func_level, sizeof(__u16)); 1849 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1850 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1851 temp = (card->info.cula << 8) + card->info.unit_addr2; 1852 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1853 1854 wait_event(card->wait_q, 1855 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1856 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1857 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1858 rc = ccw_device_start(channel->ccwdev, 1859 &channel->ccw, (addr_t) iob, 0, 0); 1860 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1861 1862 if (rc) { 1863 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1864 rc); 1865 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1866 atomic_set(&channel->irq_pending, 0); 1867 wake_up(&card->wait_q); 1868 return rc; 1869 } 1870 rc = wait_event_interruptible_timeout(card->wait_q, 1871 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1872 if (rc == -ERESTARTSYS) 1873 return rc; 1874 if (channel->state != CH_STATE_ACTIVATING) { 1875 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1876 " failed to recover an error on the device\n"); 1877 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1878 dev_name(&channel->ccwdev->dev)); 1879 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1880 qeth_clear_cmd_buffers(channel); 1881 return -ETIME; 1882 } 1883 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1884 } 1885 1886 static int qeth_peer_func_level(int level) 1887 { 1888 if ((level & 0xff) == 8) 1889 return (level & 0xff) + 0x400; 1890 if (((level >> 8) & 3) == 1) 1891 return (level & 0xff) + 0x200; 1892 return level; 1893 } 1894 1895 static void qeth_idx_write_cb(struct qeth_channel *channel, 1896 struct qeth_cmd_buffer *iob) 1897 { 1898 struct qeth_card *card; 1899 __u16 temp; 1900 1901 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1902 1903 if (channel->state == CH_STATE_DOWN) { 1904 channel->state = CH_STATE_ACTIVATING; 1905 goto out; 1906 } 1907 card = CARD_FROM_CDEV(channel->ccwdev); 1908 1909 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1910 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1911 dev_err(&card->write.ccwdev->dev, 1912 "The adapter is used exclusively by another " 1913 "host\n"); 1914 else 1915 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1916 " negative reply\n", 1917 dev_name(&card->write.ccwdev->dev)); 1918 goto out; 1919 } 1920 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1921 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1922 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1923 "function level mismatch (sent: 0x%x, received: " 1924 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 1925 card->info.func_level, temp); 1926 goto out; 1927 } 1928 channel->state = CH_STATE_UP; 1929 out: 1930 qeth_release_buffer(channel, iob); 1931 } 1932 1933 static void qeth_idx_read_cb(struct qeth_channel *channel, 1934 struct qeth_cmd_buffer *iob) 1935 { 1936 struct qeth_card *card; 1937 __u16 temp; 1938 1939 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1940 if (channel->state == CH_STATE_DOWN) { 1941 channel->state = CH_STATE_ACTIVATING; 1942 goto out; 1943 } 1944 1945 card = CARD_FROM_CDEV(channel->ccwdev); 1946 if (qeth_check_idx_response(card, iob->data)) 1947 goto out; 1948 1949 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1950 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1951 case QETH_IDX_ACT_ERR_EXCL: 1952 dev_err(&card->write.ccwdev->dev, 1953 "The adapter is used exclusively by another " 1954 "host\n"); 1955 break; 1956 case QETH_IDX_ACT_ERR_AUTH: 1957 case QETH_IDX_ACT_ERR_AUTH_USER: 1958 dev_err(&card->read.ccwdev->dev, 1959 "Setting the device online failed because of " 1960 "insufficient authorization\n"); 1961 break; 1962 default: 1963 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1964 " negative reply\n", 1965 dev_name(&card->read.ccwdev->dev)); 1966 } 1967 QETH_CARD_TEXT_(card, 2, "idxread%c", 1968 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1969 goto out; 1970 } 1971 1972 /** 1973 * * temporary fix for microcode bug 1974 * * to revert it,replace OR by AND 1975 * */ 1976 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) || 1977 (card->info.type == QETH_CARD_TYPE_OSD)) 1978 card->info.portname_required = 1; 1979 1980 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1981 if (temp != qeth_peer_func_level(card->info.func_level)) { 1982 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 1983 "level mismatch (sent: 0x%x, received: 0x%x)\n", 1984 dev_name(&card->read.ccwdev->dev), 1985 card->info.func_level, temp); 1986 goto out; 1987 } 1988 memcpy(&card->token.issuer_rm_r, 1989 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1990 QETH_MPC_TOKEN_LENGTH); 1991 memcpy(&card->info.mcl_level[0], 1992 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1993 channel->state = CH_STATE_UP; 1994 out: 1995 qeth_release_buffer(channel, iob); 1996 } 1997 1998 void qeth_prepare_control_data(struct qeth_card *card, int len, 1999 struct qeth_cmd_buffer *iob) 2000 { 2001 qeth_setup_ccw(&card->write, iob->data, len); 2002 iob->callback = qeth_release_buffer; 2003 2004 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2005 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2006 card->seqno.trans_hdr++; 2007 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2008 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2009 card->seqno.pdu_hdr++; 2010 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2011 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2012 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2013 } 2014 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2015 2016 int qeth_send_control_data(struct qeth_card *card, int len, 2017 struct qeth_cmd_buffer *iob, 2018 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 2019 unsigned long), 2020 void *reply_param) 2021 { 2022 int rc; 2023 unsigned long flags; 2024 struct qeth_reply *reply = NULL; 2025 unsigned long timeout, event_timeout; 2026 struct qeth_ipa_cmd *cmd; 2027 2028 QETH_CARD_TEXT(card, 2, "sendctl"); 2029 2030 if (card->read_or_write_problem) { 2031 qeth_release_buffer(iob->channel, iob); 2032 return -EIO; 2033 } 2034 reply = qeth_alloc_reply(card); 2035 if (!reply) { 2036 return -ENOMEM; 2037 } 2038 reply->callback = reply_cb; 2039 reply->param = reply_param; 2040 if (card->state == CARD_STATE_DOWN) 2041 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2042 else 2043 reply->seqno = card->seqno.ipa++; 2044 init_waitqueue_head(&reply->wait_q); 2045 spin_lock_irqsave(&card->lock, flags); 2046 list_add_tail(&reply->list, &card->cmd_waiter_list); 2047 spin_unlock_irqrestore(&card->lock, flags); 2048 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2049 2050 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2051 qeth_prepare_control_data(card, len, iob); 2052 2053 if (IS_IPA(iob->data)) 2054 event_timeout = QETH_IPA_TIMEOUT; 2055 else 2056 event_timeout = QETH_TIMEOUT; 2057 timeout = jiffies + event_timeout; 2058 2059 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2060 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2061 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2062 (addr_t) iob, 0, 0); 2063 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2064 if (rc) { 2065 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2066 "ccw_device_start rc = %i\n", 2067 dev_name(&card->write.ccwdev->dev), rc); 2068 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2069 spin_lock_irqsave(&card->lock, flags); 2070 list_del_init(&reply->list); 2071 qeth_put_reply(reply); 2072 spin_unlock_irqrestore(&card->lock, flags); 2073 qeth_release_buffer(iob->channel, iob); 2074 atomic_set(&card->write.irq_pending, 0); 2075 wake_up(&card->wait_q); 2076 return rc; 2077 } 2078 2079 /* we have only one long running ipassist, since we can ensure 2080 process context of this command we can sleep */ 2081 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2082 if ((cmd->hdr.command == IPA_CMD_SETIP) && 2083 (cmd->hdr.prot_version == QETH_PROT_IPV4)) { 2084 if (!wait_event_timeout(reply->wait_q, 2085 atomic_read(&reply->received), event_timeout)) 2086 goto time_err; 2087 } else { 2088 while (!atomic_read(&reply->received)) { 2089 if (time_after(jiffies, timeout)) 2090 goto time_err; 2091 cpu_relax(); 2092 } 2093 } 2094 2095 if (reply->rc == -EIO) 2096 goto error; 2097 rc = reply->rc; 2098 qeth_put_reply(reply); 2099 return rc; 2100 2101 time_err: 2102 reply->rc = -ETIME; 2103 spin_lock_irqsave(&reply->card->lock, flags); 2104 list_del_init(&reply->list); 2105 spin_unlock_irqrestore(&reply->card->lock, flags); 2106 atomic_inc(&reply->received); 2107 error: 2108 atomic_set(&card->write.irq_pending, 0); 2109 qeth_release_buffer(iob->channel, iob); 2110 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2111 rc = reply->rc; 2112 qeth_put_reply(reply); 2113 return rc; 2114 } 2115 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2116 2117 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2118 unsigned long data) 2119 { 2120 struct qeth_cmd_buffer *iob; 2121 2122 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2123 2124 iob = (struct qeth_cmd_buffer *) data; 2125 memcpy(&card->token.cm_filter_r, 2126 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2127 QETH_MPC_TOKEN_LENGTH); 2128 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2129 return 0; 2130 } 2131 2132 static int qeth_cm_enable(struct qeth_card *card) 2133 { 2134 int rc; 2135 struct qeth_cmd_buffer *iob; 2136 2137 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2138 2139 iob = qeth_wait_for_buffer(&card->write); 2140 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2141 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2142 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2143 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2144 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2145 2146 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2147 qeth_cm_enable_cb, NULL); 2148 return rc; 2149 } 2150 2151 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2152 unsigned long data) 2153 { 2154 2155 struct qeth_cmd_buffer *iob; 2156 2157 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2158 2159 iob = (struct qeth_cmd_buffer *) data; 2160 memcpy(&card->token.cm_connection_r, 2161 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2162 QETH_MPC_TOKEN_LENGTH); 2163 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2164 return 0; 2165 } 2166 2167 static int qeth_cm_setup(struct qeth_card *card) 2168 { 2169 int rc; 2170 struct qeth_cmd_buffer *iob; 2171 2172 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2173 2174 iob = qeth_wait_for_buffer(&card->write); 2175 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2176 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2177 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2178 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2179 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2180 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2181 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2182 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2183 qeth_cm_setup_cb, NULL); 2184 return rc; 2185 2186 } 2187 2188 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2189 { 2190 switch (card->info.type) { 2191 case QETH_CARD_TYPE_UNKNOWN: 2192 return 1500; 2193 case QETH_CARD_TYPE_IQD: 2194 return card->info.max_mtu; 2195 case QETH_CARD_TYPE_OSD: 2196 switch (card->info.link_type) { 2197 case QETH_LINK_TYPE_HSTR: 2198 case QETH_LINK_TYPE_LANE_TR: 2199 return 2000; 2200 default: 2201 return card->options.layer2 ? 1500 : 1492; 2202 } 2203 case QETH_CARD_TYPE_OSM: 2204 case QETH_CARD_TYPE_OSX: 2205 return card->options.layer2 ? 1500 : 1492; 2206 default: 2207 return 1500; 2208 } 2209 } 2210 2211 static inline int qeth_get_mtu_outof_framesize(int framesize) 2212 { 2213 switch (framesize) { 2214 case 0x4000: 2215 return 8192; 2216 case 0x6000: 2217 return 16384; 2218 case 0xa000: 2219 return 32768; 2220 case 0xffff: 2221 return 57344; 2222 default: 2223 return 0; 2224 } 2225 } 2226 2227 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2228 { 2229 switch (card->info.type) { 2230 case QETH_CARD_TYPE_OSD: 2231 case QETH_CARD_TYPE_OSM: 2232 case QETH_CARD_TYPE_OSX: 2233 case QETH_CARD_TYPE_IQD: 2234 return ((mtu >= 576) && 2235 (mtu <= card->info.max_mtu)); 2236 case QETH_CARD_TYPE_OSN: 2237 case QETH_CARD_TYPE_UNKNOWN: 2238 default: 2239 return 1; 2240 } 2241 } 2242 2243 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2244 unsigned long data) 2245 { 2246 2247 __u16 mtu, framesize; 2248 __u16 len; 2249 __u8 link_type; 2250 struct qeth_cmd_buffer *iob; 2251 2252 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2253 2254 iob = (struct qeth_cmd_buffer *) data; 2255 memcpy(&card->token.ulp_filter_r, 2256 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2257 QETH_MPC_TOKEN_LENGTH); 2258 if (card->info.type == QETH_CARD_TYPE_IQD) { 2259 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2260 mtu = qeth_get_mtu_outof_framesize(framesize); 2261 if (!mtu) { 2262 iob->rc = -EINVAL; 2263 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2264 return 0; 2265 } 2266 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2267 /* frame size has changed */ 2268 if (card->dev && 2269 ((card->dev->mtu == card->info.initial_mtu) || 2270 (card->dev->mtu > mtu))) 2271 card->dev->mtu = mtu; 2272 qeth_free_qdio_buffers(card); 2273 } 2274 card->info.initial_mtu = mtu; 2275 card->info.max_mtu = mtu; 2276 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2277 } else { 2278 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2279 iob->data); 2280 card->info.initial_mtu = min(card->info.max_mtu, 2281 qeth_get_initial_mtu_for_card(card)); 2282 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2283 } 2284 2285 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2286 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2287 memcpy(&link_type, 2288 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2289 card->info.link_type = link_type; 2290 } else 2291 card->info.link_type = 0; 2292 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2293 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2294 return 0; 2295 } 2296 2297 static int qeth_ulp_enable(struct qeth_card *card) 2298 { 2299 int rc; 2300 char prot_type; 2301 struct qeth_cmd_buffer *iob; 2302 2303 /*FIXME: trace view callbacks*/ 2304 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2305 2306 iob = qeth_wait_for_buffer(&card->write); 2307 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2308 2309 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2310 (__u8) card->info.portno; 2311 if (card->options.layer2) 2312 if (card->info.type == QETH_CARD_TYPE_OSN) 2313 prot_type = QETH_PROT_OSN2; 2314 else 2315 prot_type = QETH_PROT_LAYER2; 2316 else 2317 prot_type = QETH_PROT_TCPIP; 2318 2319 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2320 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2321 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2322 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2323 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2324 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data), 2325 card->info.portname, 9); 2326 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2327 qeth_ulp_enable_cb, NULL); 2328 return rc; 2329 2330 } 2331 2332 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2333 unsigned long data) 2334 { 2335 struct qeth_cmd_buffer *iob; 2336 2337 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2338 2339 iob = (struct qeth_cmd_buffer *) data; 2340 memcpy(&card->token.ulp_connection_r, 2341 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2342 QETH_MPC_TOKEN_LENGTH); 2343 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2344 3)) { 2345 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2346 dev_err(&card->gdev->dev, "A connection could not be " 2347 "established because of an OLM limit\n"); 2348 iob->rc = -EMLINK; 2349 } 2350 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2351 return 0; 2352 } 2353 2354 static int qeth_ulp_setup(struct qeth_card *card) 2355 { 2356 int rc; 2357 __u16 temp; 2358 struct qeth_cmd_buffer *iob; 2359 struct ccw_dev_id dev_id; 2360 2361 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2362 2363 iob = qeth_wait_for_buffer(&card->write); 2364 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2365 2366 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2367 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2368 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2369 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2370 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2371 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2372 2373 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2374 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2375 temp = (card->info.cula << 8) + card->info.unit_addr2; 2376 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2377 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2378 qeth_ulp_setup_cb, NULL); 2379 return rc; 2380 } 2381 2382 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2383 { 2384 int rc; 2385 struct qeth_qdio_out_buffer *newbuf; 2386 2387 rc = 0; 2388 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2389 if (!newbuf) { 2390 rc = -ENOMEM; 2391 goto out; 2392 } 2393 newbuf->buffer = q->qdio_bufs[bidx]; 2394 skb_queue_head_init(&newbuf->skb_list); 2395 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2396 newbuf->q = q; 2397 newbuf->aob = NULL; 2398 newbuf->next_pending = q->bufs[bidx]; 2399 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2400 q->bufs[bidx] = newbuf; 2401 if (q->bufstates) { 2402 q->bufstates[bidx].user = newbuf; 2403 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2404 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2405 QETH_CARD_TEXT_(q->card, 2, "%lx", 2406 (long) newbuf->next_pending); 2407 } 2408 out: 2409 return rc; 2410 } 2411 2412 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2413 { 2414 if (!q) 2415 return; 2416 2417 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2418 kfree(q); 2419 } 2420 2421 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2422 { 2423 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2424 2425 if (!q) 2426 return NULL; 2427 2428 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2429 kfree(q); 2430 return NULL; 2431 } 2432 return q; 2433 } 2434 2435 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2436 { 2437 int i, j; 2438 2439 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2440 2441 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2442 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2443 return 0; 2444 2445 QETH_DBF_TEXT(SETUP, 2, "inq"); 2446 card->qdio.in_q = qeth_alloc_qdio_queue(); 2447 if (!card->qdio.in_q) 2448 goto out_nomem; 2449 2450 /* inbound buffer pool */ 2451 if (qeth_alloc_buffer_pool(card)) 2452 goto out_freeinq; 2453 2454 /* outbound */ 2455 card->qdio.out_qs = 2456 kzalloc(card->qdio.no_out_queues * 2457 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2458 if (!card->qdio.out_qs) 2459 goto out_freepool; 2460 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2461 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2462 if (!card->qdio.out_qs[i]) 2463 goto out_freeoutq; 2464 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2465 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2466 card->qdio.out_qs[i]->queue_no = i; 2467 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2468 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2469 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2470 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2471 goto out_freeoutqbufs; 2472 } 2473 } 2474 2475 /* completion */ 2476 if (qeth_alloc_cq(card)) 2477 goto out_freeoutq; 2478 2479 return 0; 2480 2481 out_freeoutqbufs: 2482 while (j > 0) { 2483 --j; 2484 kmem_cache_free(qeth_qdio_outbuf_cache, 2485 card->qdio.out_qs[i]->bufs[j]); 2486 card->qdio.out_qs[i]->bufs[j] = NULL; 2487 } 2488 out_freeoutq: 2489 while (i > 0) { 2490 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2491 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2492 } 2493 kfree(card->qdio.out_qs); 2494 card->qdio.out_qs = NULL; 2495 out_freepool: 2496 qeth_free_buffer_pool(card); 2497 out_freeinq: 2498 qeth_free_qdio_queue(card->qdio.in_q); 2499 card->qdio.in_q = NULL; 2500 out_nomem: 2501 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2502 return -ENOMEM; 2503 } 2504 2505 static void qeth_free_qdio_buffers(struct qeth_card *card) 2506 { 2507 int i, j; 2508 2509 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2510 QETH_QDIO_UNINITIALIZED) 2511 return; 2512 2513 qeth_free_cq(card); 2514 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2515 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2516 if (card->qdio.in_q->bufs[j].rx_skb) 2517 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2518 } 2519 qeth_free_qdio_queue(card->qdio.in_q); 2520 card->qdio.in_q = NULL; 2521 /* inbound buffer pool */ 2522 qeth_free_buffer_pool(card); 2523 /* free outbound qdio_qs */ 2524 if (card->qdio.out_qs) { 2525 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2526 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2527 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2528 } 2529 kfree(card->qdio.out_qs); 2530 card->qdio.out_qs = NULL; 2531 } 2532 } 2533 2534 static void qeth_create_qib_param_field(struct qeth_card *card, 2535 char *param_field) 2536 { 2537 2538 param_field[0] = _ascebc['P']; 2539 param_field[1] = _ascebc['C']; 2540 param_field[2] = _ascebc['I']; 2541 param_field[3] = _ascebc['T']; 2542 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2543 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2544 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2545 } 2546 2547 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2548 char *param_field) 2549 { 2550 param_field[16] = _ascebc['B']; 2551 param_field[17] = _ascebc['L']; 2552 param_field[18] = _ascebc['K']; 2553 param_field[19] = _ascebc['T']; 2554 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2555 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2556 *((unsigned int *) (¶m_field[28])) = 2557 card->info.blkt.inter_packet_jumbo; 2558 } 2559 2560 static int qeth_qdio_activate(struct qeth_card *card) 2561 { 2562 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2563 return qdio_activate(CARD_DDEV(card)); 2564 } 2565 2566 static int qeth_dm_act(struct qeth_card *card) 2567 { 2568 int rc; 2569 struct qeth_cmd_buffer *iob; 2570 2571 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2572 2573 iob = qeth_wait_for_buffer(&card->write); 2574 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2575 2576 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2577 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2578 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2579 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2580 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2581 return rc; 2582 } 2583 2584 static int qeth_mpc_initialize(struct qeth_card *card) 2585 { 2586 int rc; 2587 2588 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2589 2590 rc = qeth_issue_next_read(card); 2591 if (rc) { 2592 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2593 return rc; 2594 } 2595 rc = qeth_cm_enable(card); 2596 if (rc) { 2597 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2598 goto out_qdio; 2599 } 2600 rc = qeth_cm_setup(card); 2601 if (rc) { 2602 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2603 goto out_qdio; 2604 } 2605 rc = qeth_ulp_enable(card); 2606 if (rc) { 2607 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2608 goto out_qdio; 2609 } 2610 rc = qeth_ulp_setup(card); 2611 if (rc) { 2612 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2613 goto out_qdio; 2614 } 2615 rc = qeth_alloc_qdio_buffers(card); 2616 if (rc) { 2617 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2618 goto out_qdio; 2619 } 2620 rc = qeth_qdio_establish(card); 2621 if (rc) { 2622 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2623 qeth_free_qdio_buffers(card); 2624 goto out_qdio; 2625 } 2626 rc = qeth_qdio_activate(card); 2627 if (rc) { 2628 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2629 goto out_qdio; 2630 } 2631 rc = qeth_dm_act(card); 2632 if (rc) { 2633 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2634 goto out_qdio; 2635 } 2636 2637 return 0; 2638 out_qdio: 2639 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2640 qdio_free(CARD_DDEV(card)); 2641 return rc; 2642 } 2643 2644 static void qeth_print_status_with_portname(struct qeth_card *card) 2645 { 2646 char dbf_text[15]; 2647 int i; 2648 2649 sprintf(dbf_text, "%s", card->info.portname + 1); 2650 for (i = 0; i < 8; i++) 2651 dbf_text[i] = 2652 (char) _ebcasc[(__u8) dbf_text[i]]; 2653 dbf_text[8] = 0; 2654 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n" 2655 "with link type %s (portname: %s)\n", 2656 qeth_get_cardname(card), 2657 (card->info.mcl_level[0]) ? " (level: " : "", 2658 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2659 (card->info.mcl_level[0]) ? ")" : "", 2660 qeth_get_cardname_short(card), 2661 dbf_text); 2662 2663 } 2664 2665 static void qeth_print_status_no_portname(struct qeth_card *card) 2666 { 2667 if (card->info.portname[0]) 2668 dev_info(&card->gdev->dev, "Device is a%s " 2669 "card%s%s%s\nwith link type %s " 2670 "(no portname needed by interface).\n", 2671 qeth_get_cardname(card), 2672 (card->info.mcl_level[0]) ? " (level: " : "", 2673 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2674 (card->info.mcl_level[0]) ? ")" : "", 2675 qeth_get_cardname_short(card)); 2676 else 2677 dev_info(&card->gdev->dev, "Device is a%s " 2678 "card%s%s%s\nwith link type %s.\n", 2679 qeth_get_cardname(card), 2680 (card->info.mcl_level[0]) ? " (level: " : "", 2681 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2682 (card->info.mcl_level[0]) ? ")" : "", 2683 qeth_get_cardname_short(card)); 2684 } 2685 2686 void qeth_print_status_message(struct qeth_card *card) 2687 { 2688 switch (card->info.type) { 2689 case QETH_CARD_TYPE_OSD: 2690 case QETH_CARD_TYPE_OSM: 2691 case QETH_CARD_TYPE_OSX: 2692 /* VM will use a non-zero first character 2693 * to indicate a HiperSockets like reporting 2694 * of the level OSA sets the first character to zero 2695 * */ 2696 if (!card->info.mcl_level[0]) { 2697 sprintf(card->info.mcl_level, "%02x%02x", 2698 card->info.mcl_level[2], 2699 card->info.mcl_level[3]); 2700 2701 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2702 break; 2703 } 2704 /* fallthrough */ 2705 case QETH_CARD_TYPE_IQD: 2706 if ((card->info.guestlan) || 2707 (card->info.mcl_level[0] & 0x80)) { 2708 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2709 card->info.mcl_level[0]]; 2710 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2711 card->info.mcl_level[1]]; 2712 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2713 card->info.mcl_level[2]]; 2714 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2715 card->info.mcl_level[3]]; 2716 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2717 } 2718 break; 2719 default: 2720 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2721 } 2722 if (card->info.portname_required) 2723 qeth_print_status_with_portname(card); 2724 else 2725 qeth_print_status_no_portname(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_wait_for_buffer(&card->write); 2910 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2911 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2912 2913 return iob; 2914 } 2915 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2916 2917 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2918 char prot_type) 2919 { 2920 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2921 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2922 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2923 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2924 } 2925 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2926 2927 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2928 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2929 unsigned long), 2930 void *reply_param) 2931 { 2932 int rc; 2933 char prot_type; 2934 2935 QETH_CARD_TEXT(card, 4, "sendipa"); 2936 2937 if (card->options.layer2) 2938 if (card->info.type == QETH_CARD_TYPE_OSN) 2939 prot_type = QETH_PROT_OSN2; 2940 else 2941 prot_type = QETH_PROT_LAYER2; 2942 else 2943 prot_type = QETH_PROT_TCPIP; 2944 qeth_prepare_ipa_cmd(card, iob, prot_type); 2945 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2946 iob, reply_cb, reply_param); 2947 if (rc == -ETIME) { 2948 qeth_clear_ipacmd_list(card); 2949 qeth_schedule_recovery(card); 2950 } 2951 return rc; 2952 } 2953 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2954 2955 int qeth_send_startlan(struct qeth_card *card) 2956 { 2957 int rc; 2958 struct qeth_cmd_buffer *iob; 2959 2960 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 2961 2962 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 2963 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 2964 return rc; 2965 } 2966 EXPORT_SYMBOL_GPL(qeth_send_startlan); 2967 2968 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 2969 struct qeth_reply *reply, unsigned long data) 2970 { 2971 struct qeth_ipa_cmd *cmd; 2972 2973 QETH_CARD_TEXT(card, 4, "defadpcb"); 2974 2975 cmd = (struct qeth_ipa_cmd *) data; 2976 if (cmd->hdr.return_code == 0) 2977 cmd->hdr.return_code = 2978 cmd->data.setadapterparms.hdr.return_code; 2979 return 0; 2980 } 2981 2982 static int qeth_query_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, 3, "quyadpcb"); 2988 2989 cmd = (struct qeth_ipa_cmd *) data; 2990 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2991 card->info.link_type = 2992 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2993 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 2994 } 2995 card->options.adp.supported_funcs = 2996 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2997 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 2998 } 2999 3000 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 3001 __u32 command, __u32 cmdlen) 3002 { 3003 struct qeth_cmd_buffer *iob; 3004 struct qeth_ipa_cmd *cmd; 3005 3006 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3007 QETH_PROT_IPV4); 3008 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3009 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3010 cmd->data.setadapterparms.hdr.command_code = command; 3011 cmd->data.setadapterparms.hdr.used_total = 1; 3012 cmd->data.setadapterparms.hdr.seq_no = 1; 3013 3014 return iob; 3015 } 3016 3017 int qeth_query_setadapterparms(struct qeth_card *card) 3018 { 3019 int rc; 3020 struct qeth_cmd_buffer *iob; 3021 3022 QETH_CARD_TEXT(card, 3, "queryadp"); 3023 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3024 sizeof(struct qeth_ipacmd_setadpparms)); 3025 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3026 return rc; 3027 } 3028 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3029 3030 static int qeth_query_ipassists_cb(struct qeth_card *card, 3031 struct qeth_reply *reply, unsigned long data) 3032 { 3033 struct qeth_ipa_cmd *cmd; 3034 3035 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3036 3037 cmd = (struct qeth_ipa_cmd *) data; 3038 3039 switch (cmd->hdr.return_code) { 3040 case IPA_RC_NOTSUPP: 3041 case IPA_RC_L2_UNSUPPORTED_CMD: 3042 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3043 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3044 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3045 return -0; 3046 default: 3047 if (cmd->hdr.return_code) { 3048 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3049 "rc=%d\n", 3050 dev_name(&card->gdev->dev), 3051 cmd->hdr.return_code); 3052 return 0; 3053 } 3054 } 3055 3056 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3057 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3058 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3059 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3060 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3061 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3062 } else 3063 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3064 "\n", dev_name(&card->gdev->dev)); 3065 return 0; 3066 } 3067 3068 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3069 { 3070 int rc; 3071 struct qeth_cmd_buffer *iob; 3072 3073 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3074 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3075 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3076 return rc; 3077 } 3078 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3079 3080 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3081 struct qeth_reply *reply, unsigned long data) 3082 { 3083 struct qeth_ipa_cmd *cmd; 3084 struct qeth_switch_info *sw_info; 3085 struct qeth_query_switch_attributes *attrs; 3086 3087 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3088 cmd = (struct qeth_ipa_cmd *) data; 3089 sw_info = (struct qeth_switch_info *)reply->param; 3090 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3091 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3092 sw_info->capabilities = attrs->capabilities; 3093 sw_info->settings = attrs->settings; 3094 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3095 sw_info->settings); 3096 } 3097 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3098 3099 return 0; 3100 } 3101 3102 int qeth_query_switch_attributes(struct qeth_card *card, 3103 struct qeth_switch_info *sw_info) 3104 { 3105 struct qeth_cmd_buffer *iob; 3106 3107 QETH_CARD_TEXT(card, 2, "qswiattr"); 3108 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3109 return -EOPNOTSUPP; 3110 if (!netif_carrier_ok(card->dev)) 3111 return -ENOMEDIUM; 3112 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3113 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3114 return qeth_send_ipa_cmd(card, iob, 3115 qeth_query_switch_attributes_cb, sw_info); 3116 } 3117 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3118 3119 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3120 struct qeth_reply *reply, unsigned long data) 3121 { 3122 struct qeth_ipa_cmd *cmd; 3123 __u16 rc; 3124 3125 cmd = (struct qeth_ipa_cmd *)data; 3126 rc = cmd->hdr.return_code; 3127 if (rc) 3128 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3129 else 3130 card->info.diagass_support = cmd->data.diagass.ext; 3131 return 0; 3132 } 3133 3134 static int qeth_query_setdiagass(struct qeth_card *card) 3135 { 3136 struct qeth_cmd_buffer *iob; 3137 struct qeth_ipa_cmd *cmd; 3138 3139 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3140 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3141 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3142 cmd->data.diagass.subcmd_len = 16; 3143 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3144 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3145 } 3146 3147 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3148 { 3149 unsigned long info = get_zeroed_page(GFP_KERNEL); 3150 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3151 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3152 struct ccw_dev_id ccwid; 3153 int level; 3154 3155 tid->chpid = card->info.chpid; 3156 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3157 tid->ssid = ccwid.ssid; 3158 tid->devno = ccwid.devno; 3159 if (!info) 3160 return; 3161 level = stsi(NULL, 0, 0, 0); 3162 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3163 tid->lparnr = info222->lpar_number; 3164 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3165 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3166 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3167 } 3168 free_page(info); 3169 return; 3170 } 3171 3172 static int qeth_hw_trap_cb(struct qeth_card *card, 3173 struct qeth_reply *reply, unsigned long data) 3174 { 3175 struct qeth_ipa_cmd *cmd; 3176 __u16 rc; 3177 3178 cmd = (struct qeth_ipa_cmd *)data; 3179 rc = cmd->hdr.return_code; 3180 if (rc) 3181 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3182 return 0; 3183 } 3184 3185 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3186 { 3187 struct qeth_cmd_buffer *iob; 3188 struct qeth_ipa_cmd *cmd; 3189 3190 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3191 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3192 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3193 cmd->data.diagass.subcmd_len = 80; 3194 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3195 cmd->data.diagass.type = 1; 3196 cmd->data.diagass.action = action; 3197 switch (action) { 3198 case QETH_DIAGS_TRAP_ARM: 3199 cmd->data.diagass.options = 0x0003; 3200 cmd->data.diagass.ext = 0x00010000 + 3201 sizeof(struct qeth_trap_id); 3202 qeth_get_trap_id(card, 3203 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3204 break; 3205 case QETH_DIAGS_TRAP_DISARM: 3206 cmd->data.diagass.options = 0x0001; 3207 break; 3208 case QETH_DIAGS_TRAP_CAPTURE: 3209 break; 3210 } 3211 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3212 } 3213 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3214 3215 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf, 3216 unsigned int qdio_error, const char *dbftext) 3217 { 3218 if (qdio_error) { 3219 QETH_CARD_TEXT(card, 2, dbftext); 3220 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3221 buf->element[15].sflags); 3222 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3223 buf->element[14].sflags); 3224 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3225 if ((buf->element[15].sflags) == 0x12) { 3226 card->stats.rx_dropped++; 3227 return 0; 3228 } else 3229 return 1; 3230 } 3231 return 0; 3232 } 3233 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors); 3234 3235 void qeth_buffer_reclaim_work(struct work_struct *work) 3236 { 3237 struct qeth_card *card = container_of(work, struct qeth_card, 3238 buffer_reclaim_work.work); 3239 3240 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3241 qeth_queue_input_buffer(card, card->reclaim_index); 3242 } 3243 3244 void qeth_queue_input_buffer(struct qeth_card *card, int index) 3245 { 3246 struct qeth_qdio_q *queue = card->qdio.in_q; 3247 struct list_head *lh; 3248 int count; 3249 int i; 3250 int rc; 3251 int newcount = 0; 3252 3253 count = (index < queue->next_buf_to_init)? 3254 card->qdio.in_buf_pool.buf_count - 3255 (queue->next_buf_to_init - index) : 3256 card->qdio.in_buf_pool.buf_count - 3257 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3258 /* only requeue at a certain threshold to avoid SIGAs */ 3259 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3260 for (i = queue->next_buf_to_init; 3261 i < queue->next_buf_to_init + count; ++i) { 3262 if (qeth_init_input_buffer(card, 3263 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3264 break; 3265 } else { 3266 newcount++; 3267 } 3268 } 3269 3270 if (newcount < count) { 3271 /* we are in memory shortage so we switch back to 3272 traditional skb allocation and drop packages */ 3273 atomic_set(&card->force_alloc_skb, 3); 3274 count = newcount; 3275 } else { 3276 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3277 } 3278 3279 if (!count) { 3280 i = 0; 3281 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3282 i++; 3283 if (i == card->qdio.in_buf_pool.buf_count) { 3284 QETH_CARD_TEXT(card, 2, "qsarbw"); 3285 card->reclaim_index = index; 3286 schedule_delayed_work( 3287 &card->buffer_reclaim_work, 3288 QETH_RECLAIM_WORK_TIME); 3289 } 3290 return; 3291 } 3292 3293 /* 3294 * according to old code it should be avoided to requeue all 3295 * 128 buffers in order to benefit from PCI avoidance. 3296 * this function keeps at least one buffer (the buffer at 3297 * 'index') un-requeued -> this buffer is the first buffer that 3298 * will be requeued the next time 3299 */ 3300 if (card->options.performance_stats) { 3301 card->perf_stats.inbound_do_qdio_cnt++; 3302 card->perf_stats.inbound_do_qdio_start_time = 3303 qeth_get_micros(); 3304 } 3305 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3306 queue->next_buf_to_init, count); 3307 if (card->options.performance_stats) 3308 card->perf_stats.inbound_do_qdio_time += 3309 qeth_get_micros() - 3310 card->perf_stats.inbound_do_qdio_start_time; 3311 if (rc) { 3312 QETH_CARD_TEXT(card, 2, "qinberr"); 3313 } 3314 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3315 QDIO_MAX_BUFFERS_PER_Q; 3316 } 3317 } 3318 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer); 3319 3320 static int qeth_handle_send_error(struct qeth_card *card, 3321 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3322 { 3323 int sbalf15 = buffer->buffer->element[15].sflags; 3324 3325 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3326 if (card->info.type == QETH_CARD_TYPE_IQD) { 3327 if (sbalf15 == 0) { 3328 qdio_err = 0; 3329 } else { 3330 qdio_err = 1; 3331 } 3332 } 3333 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3334 3335 if (!qdio_err) 3336 return QETH_SEND_ERROR_NONE; 3337 3338 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3339 return QETH_SEND_ERROR_RETRY; 3340 3341 QETH_CARD_TEXT(card, 1, "lnkfail"); 3342 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3343 (u16)qdio_err, (u8)sbalf15); 3344 return QETH_SEND_ERROR_LINK_FAILURE; 3345 } 3346 3347 /* 3348 * Switched to packing state if the number of used buffers on a queue 3349 * reaches a certain limit. 3350 */ 3351 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3352 { 3353 if (!queue->do_pack) { 3354 if (atomic_read(&queue->used_buffers) 3355 >= QETH_HIGH_WATERMARK_PACK){ 3356 /* switch non-PACKING -> PACKING */ 3357 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3358 if (queue->card->options.performance_stats) 3359 queue->card->perf_stats.sc_dp_p++; 3360 queue->do_pack = 1; 3361 } 3362 } 3363 } 3364 3365 /* 3366 * Switches from packing to non-packing mode. If there is a packing 3367 * buffer on the queue this buffer will be prepared to be flushed. 3368 * In that case 1 is returned to inform the caller. If no buffer 3369 * has to be flushed, zero is returned. 3370 */ 3371 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3372 { 3373 struct qeth_qdio_out_buffer *buffer; 3374 int flush_count = 0; 3375 3376 if (queue->do_pack) { 3377 if (atomic_read(&queue->used_buffers) 3378 <= QETH_LOW_WATERMARK_PACK) { 3379 /* switch PACKING -> non-PACKING */ 3380 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3381 if (queue->card->options.performance_stats) 3382 queue->card->perf_stats.sc_p_dp++; 3383 queue->do_pack = 0; 3384 /* flush packing buffers */ 3385 buffer = queue->bufs[queue->next_buf_to_fill]; 3386 if ((atomic_read(&buffer->state) == 3387 QETH_QDIO_BUF_EMPTY) && 3388 (buffer->next_element_to_fill > 0)) { 3389 atomic_set(&buffer->state, 3390 QETH_QDIO_BUF_PRIMED); 3391 flush_count++; 3392 queue->next_buf_to_fill = 3393 (queue->next_buf_to_fill + 1) % 3394 QDIO_MAX_BUFFERS_PER_Q; 3395 } 3396 } 3397 } 3398 return flush_count; 3399 } 3400 3401 3402 /* 3403 * Called to flush a packing buffer if no more pci flags are on the queue. 3404 * Checks if there is a packing buffer and prepares it to be flushed. 3405 * In that case returns 1, otherwise zero. 3406 */ 3407 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue) 3408 { 3409 struct qeth_qdio_out_buffer *buffer; 3410 3411 buffer = queue->bufs[queue->next_buf_to_fill]; 3412 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3413 (buffer->next_element_to_fill > 0)) { 3414 /* it's a packing buffer */ 3415 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3416 queue->next_buf_to_fill = 3417 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3418 return 1; 3419 } 3420 return 0; 3421 } 3422 3423 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3424 int count) 3425 { 3426 struct qeth_qdio_out_buffer *buf; 3427 int rc; 3428 int i; 3429 unsigned int qdio_flags; 3430 3431 for (i = index; i < index + count; ++i) { 3432 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3433 buf = queue->bufs[bidx]; 3434 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3435 SBAL_EFLAGS_LAST_ENTRY; 3436 3437 if (queue->bufstates) 3438 queue->bufstates[bidx].user = buf; 3439 3440 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3441 continue; 3442 3443 if (!queue->do_pack) { 3444 if ((atomic_read(&queue->used_buffers) >= 3445 (QETH_HIGH_WATERMARK_PACK - 3446 QETH_WATERMARK_PACK_FUZZ)) && 3447 !atomic_read(&queue->set_pci_flags_count)) { 3448 /* it's likely that we'll go to packing 3449 * mode soon */ 3450 atomic_inc(&queue->set_pci_flags_count); 3451 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3452 } 3453 } else { 3454 if (!atomic_read(&queue->set_pci_flags_count)) { 3455 /* 3456 * there's no outstanding PCI any more, so we 3457 * have to request a PCI to be sure the the PCI 3458 * will wake at some time in the future then we 3459 * can flush packed buffers that might still be 3460 * hanging around, which can happen if no 3461 * further send was requested by the stack 3462 */ 3463 atomic_inc(&queue->set_pci_flags_count); 3464 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3465 } 3466 } 3467 } 3468 3469 queue->card->dev->trans_start = jiffies; 3470 if (queue->card->options.performance_stats) { 3471 queue->card->perf_stats.outbound_do_qdio_cnt++; 3472 queue->card->perf_stats.outbound_do_qdio_start_time = 3473 qeth_get_micros(); 3474 } 3475 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3476 if (atomic_read(&queue->set_pci_flags_count)) 3477 qdio_flags |= QDIO_FLAG_PCI_OUT; 3478 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3479 queue->queue_no, index, count); 3480 if (queue->card->options.performance_stats) 3481 queue->card->perf_stats.outbound_do_qdio_time += 3482 qeth_get_micros() - 3483 queue->card->perf_stats.outbound_do_qdio_start_time; 3484 atomic_add(count, &queue->used_buffers); 3485 if (rc) { 3486 queue->card->stats.tx_errors += count; 3487 /* ignore temporary SIGA errors without busy condition */ 3488 if (rc == -ENOBUFS) 3489 return; 3490 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3491 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3492 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3493 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3494 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3495 3496 /* this must not happen under normal circumstances. if it 3497 * happens something is really wrong -> recover */ 3498 qeth_schedule_recovery(queue->card); 3499 return; 3500 } 3501 if (queue->card->options.performance_stats) 3502 queue->card->perf_stats.bufs_sent += count; 3503 } 3504 3505 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3506 { 3507 int index; 3508 int flush_cnt = 0; 3509 int q_was_packing = 0; 3510 3511 /* 3512 * check if weed have to switch to non-packing mode or if 3513 * we have to get a pci flag out on the queue 3514 */ 3515 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3516 !atomic_read(&queue->set_pci_flags_count)) { 3517 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3518 QETH_OUT_Q_UNLOCKED) { 3519 /* 3520 * If we get in here, there was no action in 3521 * do_send_packet. So, we check if there is a 3522 * packing buffer to be flushed here. 3523 */ 3524 netif_stop_queue(queue->card->dev); 3525 index = queue->next_buf_to_fill; 3526 q_was_packing = queue->do_pack; 3527 /* queue->do_pack may change */ 3528 barrier(); 3529 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3530 if (!flush_cnt && 3531 !atomic_read(&queue->set_pci_flags_count)) 3532 flush_cnt += 3533 qeth_flush_buffers_on_no_pci(queue); 3534 if (queue->card->options.performance_stats && 3535 q_was_packing) 3536 queue->card->perf_stats.bufs_sent_pack += 3537 flush_cnt; 3538 if (flush_cnt) 3539 qeth_flush_buffers(queue, index, flush_cnt); 3540 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3541 } 3542 } 3543 } 3544 3545 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3546 unsigned long card_ptr) 3547 { 3548 struct qeth_card *card = (struct qeth_card *)card_ptr; 3549 3550 if (card->dev && (card->dev->flags & IFF_UP)) 3551 napi_schedule(&card->napi); 3552 } 3553 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3554 3555 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3556 { 3557 int rc; 3558 3559 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3560 rc = -1; 3561 goto out; 3562 } else { 3563 if (card->options.cq == cq) { 3564 rc = 0; 3565 goto out; 3566 } 3567 3568 if (card->state != CARD_STATE_DOWN && 3569 card->state != CARD_STATE_RECOVER) { 3570 rc = -1; 3571 goto out; 3572 } 3573 3574 qeth_free_qdio_buffers(card); 3575 card->options.cq = cq; 3576 rc = 0; 3577 } 3578 out: 3579 return rc; 3580 3581 } 3582 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3583 3584 3585 static void qeth_qdio_cq_handler(struct qeth_card *card, 3586 unsigned int qdio_err, 3587 unsigned int queue, int first_element, int count) { 3588 struct qeth_qdio_q *cq = card->qdio.c_q; 3589 int i; 3590 int rc; 3591 3592 if (!qeth_is_cq(card, queue)) 3593 goto out; 3594 3595 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3596 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3597 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3598 3599 if (qdio_err) { 3600 netif_stop_queue(card->dev); 3601 qeth_schedule_recovery(card); 3602 goto out; 3603 } 3604 3605 if (card->options.performance_stats) { 3606 card->perf_stats.cq_cnt++; 3607 card->perf_stats.cq_start_time = qeth_get_micros(); 3608 } 3609 3610 for (i = first_element; i < first_element + count; ++i) { 3611 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3612 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3613 int e; 3614 3615 e = 0; 3616 while (buffer->element[e].addr) { 3617 unsigned long phys_aob_addr; 3618 3619 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3620 qeth_qdio_handle_aob(card, phys_aob_addr); 3621 buffer->element[e].addr = NULL; 3622 buffer->element[e].eflags = 0; 3623 buffer->element[e].sflags = 0; 3624 buffer->element[e].length = 0; 3625 3626 ++e; 3627 } 3628 3629 buffer->element[15].eflags = 0; 3630 buffer->element[15].sflags = 0; 3631 } 3632 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3633 card->qdio.c_q->next_buf_to_init, 3634 count); 3635 if (rc) { 3636 dev_warn(&card->gdev->dev, 3637 "QDIO reported an error, rc=%i\n", rc); 3638 QETH_CARD_TEXT(card, 2, "qcqherr"); 3639 } 3640 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3641 + count) % QDIO_MAX_BUFFERS_PER_Q; 3642 3643 netif_wake_queue(card->dev); 3644 3645 if (card->options.performance_stats) { 3646 int delta_t = qeth_get_micros(); 3647 delta_t -= card->perf_stats.cq_start_time; 3648 card->perf_stats.cq_time += delta_t; 3649 } 3650 out: 3651 return; 3652 } 3653 3654 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3655 unsigned int queue, int first_elem, int count, 3656 unsigned long card_ptr) 3657 { 3658 struct qeth_card *card = (struct qeth_card *)card_ptr; 3659 3660 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3661 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3662 3663 if (qeth_is_cq(card, queue)) 3664 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3665 else if (qdio_err) 3666 qeth_schedule_recovery(card); 3667 3668 3669 } 3670 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3671 3672 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3673 unsigned int qdio_error, int __queue, int first_element, 3674 int count, unsigned long card_ptr) 3675 { 3676 struct qeth_card *card = (struct qeth_card *) card_ptr; 3677 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3678 struct qeth_qdio_out_buffer *buffer; 3679 int i; 3680 3681 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3682 if (qdio_error & QDIO_ERROR_FATAL) { 3683 QETH_CARD_TEXT(card, 2, "achkcond"); 3684 netif_stop_queue(card->dev); 3685 qeth_schedule_recovery(card); 3686 return; 3687 } 3688 if (card->options.performance_stats) { 3689 card->perf_stats.outbound_handler_cnt++; 3690 card->perf_stats.outbound_handler_start_time = 3691 qeth_get_micros(); 3692 } 3693 for (i = first_element; i < (first_element + count); ++i) { 3694 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3695 buffer = queue->bufs[bidx]; 3696 qeth_handle_send_error(card, buffer, qdio_error); 3697 3698 if (queue->bufstates && 3699 (queue->bufstates[bidx].flags & 3700 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3701 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3702 3703 if (atomic_cmpxchg(&buffer->state, 3704 QETH_QDIO_BUF_PRIMED, 3705 QETH_QDIO_BUF_PENDING) == 3706 QETH_QDIO_BUF_PRIMED) { 3707 qeth_notify_skbs(queue, buffer, 3708 TX_NOTIFY_PENDING); 3709 } 3710 buffer->aob = queue->bufstates[bidx].aob; 3711 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3712 QETH_CARD_TEXT(queue->card, 5, "aob"); 3713 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3714 virt_to_phys(buffer->aob)); 3715 if (qeth_init_qdio_out_buf(queue, bidx)) { 3716 QETH_CARD_TEXT(card, 2, "outofbuf"); 3717 qeth_schedule_recovery(card); 3718 } 3719 } else { 3720 if (card->options.cq == QETH_CQ_ENABLED) { 3721 enum iucv_tx_notify n; 3722 3723 n = qeth_compute_cq_notification( 3724 buffer->buffer->element[15].sflags, 0); 3725 qeth_notify_skbs(queue, buffer, n); 3726 } 3727 3728 qeth_clear_output_buffer(queue, buffer, 3729 QETH_QDIO_BUF_EMPTY); 3730 } 3731 qeth_cleanup_handled_pending(queue, bidx, 0); 3732 } 3733 atomic_sub(count, &queue->used_buffers); 3734 /* check if we need to do something on this outbound queue */ 3735 if (card->info.type != QETH_CARD_TYPE_IQD) 3736 qeth_check_outbound_queue(queue); 3737 3738 netif_wake_queue(queue->card->dev); 3739 if (card->options.performance_stats) 3740 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3741 card->perf_stats.outbound_handler_start_time; 3742 } 3743 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3744 3745 /** 3746 * Note: Function assumes that we have 4 outbound queues. 3747 */ 3748 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3749 int ipv, int cast_type) 3750 { 3751 __be16 *tci; 3752 u8 tos; 3753 3754 if (cast_type && card->info.is_multicast_different) 3755 return card->info.is_multicast_different & 3756 (card->qdio.no_out_queues - 1); 3757 3758 switch (card->qdio.do_prio_queueing) { 3759 case QETH_PRIO_Q_ING_TOS: 3760 case QETH_PRIO_Q_ING_PREC: 3761 switch (ipv) { 3762 case 4: 3763 tos = ipv4_get_dsfield(ip_hdr(skb)); 3764 break; 3765 case 6: 3766 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3767 break; 3768 default: 3769 return card->qdio.default_out_queue; 3770 } 3771 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3772 return ~tos >> 6 & 3; 3773 if (tos & IPTOS_MINCOST) 3774 return 3; 3775 if (tos & IPTOS_RELIABILITY) 3776 return 2; 3777 if (tos & IPTOS_THROUGHPUT) 3778 return 1; 3779 if (tos & IPTOS_LOWDELAY) 3780 return 0; 3781 break; 3782 case QETH_PRIO_Q_ING_SKB: 3783 if (skb->priority > 5) 3784 return 0; 3785 return ~skb->priority >> 1 & 3; 3786 case QETH_PRIO_Q_ING_VLAN: 3787 tci = &((struct ethhdr *)skb->data)->h_proto; 3788 if (*tci == ETH_P_8021Q) 3789 return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3; 3790 break; 3791 default: 3792 break; 3793 } 3794 return card->qdio.default_out_queue; 3795 } 3796 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3797 3798 int qeth_get_elements_for_frags(struct sk_buff *skb) 3799 { 3800 int cnt, length, e, elements = 0; 3801 struct skb_frag_struct *frag; 3802 char *data; 3803 3804 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3805 frag = &skb_shinfo(skb)->frags[cnt]; 3806 data = (char *)page_to_phys(skb_frag_page(frag)) + 3807 frag->page_offset; 3808 length = frag->size; 3809 e = PFN_UP((unsigned long)data + length - 1) - 3810 PFN_DOWN((unsigned long)data); 3811 elements += e; 3812 } 3813 return elements; 3814 } 3815 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3816 3817 int qeth_get_elements_no(struct qeth_card *card, 3818 struct sk_buff *skb, int elems) 3819 { 3820 int dlen = skb->len - skb->data_len; 3821 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) - 3822 PFN_DOWN((unsigned long)skb->data); 3823 3824 elements_needed += qeth_get_elements_for_frags(skb); 3825 3826 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3827 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3828 "(Number=%d / Length=%d). Discarded.\n", 3829 (elements_needed+elems), skb->len); 3830 return 0; 3831 } 3832 return elements_needed; 3833 } 3834 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3835 3836 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3837 { 3838 int hroom, inpage, rest; 3839 3840 if (((unsigned long)skb->data & PAGE_MASK) != 3841 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3842 hroom = skb_headroom(skb); 3843 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3844 rest = len - inpage; 3845 if (rest > hroom) 3846 return 1; 3847 memmove(skb->data - rest, skb->data, skb->len - skb->data_len); 3848 skb->data -= rest; 3849 skb->tail -= rest; 3850 *hdr = (struct qeth_hdr *)skb->data; 3851 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3852 } 3853 return 0; 3854 } 3855 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3856 3857 static inline void __qeth_fill_buffer(struct sk_buff *skb, 3858 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, 3859 int offset) 3860 { 3861 int length = skb->len - skb->data_len; 3862 int length_here; 3863 int element; 3864 char *data; 3865 int first_lap, cnt; 3866 struct skb_frag_struct *frag; 3867 3868 element = *next_element_to_fill; 3869 data = skb->data; 3870 first_lap = (is_tso == 0 ? 1 : 0); 3871 3872 if (offset >= 0) { 3873 data = skb->data + offset; 3874 length -= offset; 3875 first_lap = 0; 3876 } 3877 3878 while (length > 0) { 3879 /* length_here is the remaining amount of data in this page */ 3880 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3881 if (length < length_here) 3882 length_here = length; 3883 3884 buffer->element[element].addr = data; 3885 buffer->element[element].length = length_here; 3886 length -= length_here; 3887 if (!length) { 3888 if (first_lap) 3889 if (skb_shinfo(skb)->nr_frags) 3890 buffer->element[element].eflags = 3891 SBAL_EFLAGS_FIRST_FRAG; 3892 else 3893 buffer->element[element].eflags = 0; 3894 else 3895 buffer->element[element].eflags = 3896 SBAL_EFLAGS_MIDDLE_FRAG; 3897 } else { 3898 if (first_lap) 3899 buffer->element[element].eflags = 3900 SBAL_EFLAGS_FIRST_FRAG; 3901 else 3902 buffer->element[element].eflags = 3903 SBAL_EFLAGS_MIDDLE_FRAG; 3904 } 3905 data += length_here; 3906 element++; 3907 first_lap = 0; 3908 } 3909 3910 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3911 frag = &skb_shinfo(skb)->frags[cnt]; 3912 data = (char *)page_to_phys(skb_frag_page(frag)) + 3913 frag->page_offset; 3914 length = frag->size; 3915 while (length > 0) { 3916 length_here = PAGE_SIZE - 3917 ((unsigned long) data % PAGE_SIZE); 3918 if (length < length_here) 3919 length_here = length; 3920 3921 buffer->element[element].addr = data; 3922 buffer->element[element].length = length_here; 3923 buffer->element[element].eflags = 3924 SBAL_EFLAGS_MIDDLE_FRAG; 3925 length -= length_here; 3926 data += length_here; 3927 element++; 3928 } 3929 } 3930 3931 if (buffer->element[element - 1].eflags) 3932 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3933 *next_element_to_fill = element; 3934 } 3935 3936 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 3937 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, 3938 struct qeth_hdr *hdr, int offset, int hd_len) 3939 { 3940 struct qdio_buffer *buffer; 3941 int flush_cnt = 0, hdr_len, large_send = 0; 3942 3943 buffer = buf->buffer; 3944 atomic_inc(&skb->users); 3945 skb_queue_tail(&buf->skb_list, skb); 3946 3947 /*check first on TSO ....*/ 3948 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) { 3949 int element = buf->next_element_to_fill; 3950 3951 hdr_len = sizeof(struct qeth_hdr_tso) + 3952 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len; 3953 /*fill first buffer entry only with header information */ 3954 buffer->element[element].addr = skb->data; 3955 buffer->element[element].length = hdr_len; 3956 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3957 buf->next_element_to_fill++; 3958 skb->data += hdr_len; 3959 skb->len -= hdr_len; 3960 large_send = 1; 3961 } 3962 3963 if (offset >= 0) { 3964 int element = buf->next_element_to_fill; 3965 buffer->element[element].addr = hdr; 3966 buffer->element[element].length = sizeof(struct qeth_hdr) + 3967 hd_len; 3968 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3969 buf->is_header[element] = 1; 3970 buf->next_element_to_fill++; 3971 } 3972 3973 __qeth_fill_buffer(skb, buffer, large_send, 3974 (int *)&buf->next_element_to_fill, offset); 3975 3976 if (!queue->do_pack) { 3977 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 3978 /* set state to PRIMED -> will be flushed */ 3979 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 3980 flush_cnt = 1; 3981 } else { 3982 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 3983 if (queue->card->options.performance_stats) 3984 queue->card->perf_stats.skbs_sent_pack++; 3985 if (buf->next_element_to_fill >= 3986 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 3987 /* 3988 * packed buffer if full -> set state PRIMED 3989 * -> will be flushed 3990 */ 3991 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 3992 flush_cnt = 1; 3993 } 3994 } 3995 return flush_cnt; 3996 } 3997 3998 int qeth_do_send_packet_fast(struct qeth_card *card, 3999 struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4000 struct qeth_hdr *hdr, int elements_needed, 4001 int offset, int hd_len) 4002 { 4003 struct qeth_qdio_out_buffer *buffer; 4004 int index; 4005 4006 /* spin until we get the queue ... */ 4007 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4008 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4009 /* ... now we've got the queue */ 4010 index = queue->next_buf_to_fill; 4011 buffer = queue->bufs[queue->next_buf_to_fill]; 4012 /* 4013 * check if buffer is empty to make sure that we do not 'overtake' 4014 * ourselves and try to fill a buffer that is already primed 4015 */ 4016 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4017 goto out; 4018 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % 4019 QDIO_MAX_BUFFERS_PER_Q; 4020 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4021 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4022 qeth_flush_buffers(queue, index, 1); 4023 return 0; 4024 out: 4025 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4026 return -EBUSY; 4027 } 4028 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4029 4030 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4031 struct sk_buff *skb, struct qeth_hdr *hdr, 4032 int elements_needed) 4033 { 4034 struct qeth_qdio_out_buffer *buffer; 4035 int start_index; 4036 int flush_count = 0; 4037 int do_pack = 0; 4038 int tmp; 4039 int rc = 0; 4040 4041 /* spin until we get the queue ... */ 4042 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4043 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4044 start_index = queue->next_buf_to_fill; 4045 buffer = queue->bufs[queue->next_buf_to_fill]; 4046 /* 4047 * check if buffer is empty to make sure that we do not 'overtake' 4048 * ourselves and try to fill a buffer that is already primed 4049 */ 4050 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4051 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4052 return -EBUSY; 4053 } 4054 /* check if we need to switch packing state of this queue */ 4055 qeth_switch_to_packing_if_needed(queue); 4056 if (queue->do_pack) { 4057 do_pack = 1; 4058 /* does packet fit in current buffer? */ 4059 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4060 buffer->next_element_to_fill) < elements_needed) { 4061 /* ... no -> set state PRIMED */ 4062 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4063 flush_count++; 4064 queue->next_buf_to_fill = 4065 (queue->next_buf_to_fill + 1) % 4066 QDIO_MAX_BUFFERS_PER_Q; 4067 buffer = queue->bufs[queue->next_buf_to_fill]; 4068 /* we did a step forward, so check buffer state 4069 * again */ 4070 if (atomic_read(&buffer->state) != 4071 QETH_QDIO_BUF_EMPTY) { 4072 qeth_flush_buffers(queue, start_index, 4073 flush_count); 4074 atomic_set(&queue->state, 4075 QETH_OUT_Q_UNLOCKED); 4076 return -EBUSY; 4077 } 4078 } 4079 } 4080 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0); 4081 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4082 QDIO_MAX_BUFFERS_PER_Q; 4083 flush_count += tmp; 4084 if (flush_count) 4085 qeth_flush_buffers(queue, start_index, flush_count); 4086 else if (!atomic_read(&queue->set_pci_flags_count)) 4087 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4088 /* 4089 * queue->state will go from LOCKED -> UNLOCKED or from 4090 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4091 * (switch packing state or flush buffer to get another pci flag out). 4092 * In that case we will enter this loop 4093 */ 4094 while (atomic_dec_return(&queue->state)) { 4095 flush_count = 0; 4096 start_index = queue->next_buf_to_fill; 4097 /* check if we can go back to non-packing state */ 4098 flush_count += qeth_switch_to_nonpacking_if_needed(queue); 4099 /* 4100 * check if we need to flush a packing buffer to get a pci 4101 * flag out on the queue 4102 */ 4103 if (!flush_count && !atomic_read(&queue->set_pci_flags_count)) 4104 flush_count += qeth_flush_buffers_on_no_pci(queue); 4105 if (flush_count) 4106 qeth_flush_buffers(queue, start_index, flush_count); 4107 } 4108 /* at this point the queue is UNLOCKED again */ 4109 if (queue->card->options.performance_stats && do_pack) 4110 queue->card->perf_stats.bufs_sent_pack += flush_count; 4111 4112 return rc; 4113 } 4114 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4115 4116 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4117 struct qeth_reply *reply, unsigned long data) 4118 { 4119 struct qeth_ipa_cmd *cmd; 4120 struct qeth_ipacmd_setadpparms *setparms; 4121 4122 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4123 4124 cmd = (struct qeth_ipa_cmd *) data; 4125 setparms = &(cmd->data.setadapterparms); 4126 4127 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4128 if (cmd->hdr.return_code) { 4129 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code); 4130 setparms->data.mode = SET_PROMISC_MODE_OFF; 4131 } 4132 card->info.promisc_mode = setparms->data.mode; 4133 return 0; 4134 } 4135 4136 void qeth_setadp_promisc_mode(struct qeth_card *card) 4137 { 4138 enum qeth_ipa_promisc_modes mode; 4139 struct net_device *dev = card->dev; 4140 struct qeth_cmd_buffer *iob; 4141 struct qeth_ipa_cmd *cmd; 4142 4143 QETH_CARD_TEXT(card, 4, "setprom"); 4144 4145 if (((dev->flags & IFF_PROMISC) && 4146 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4147 (!(dev->flags & IFF_PROMISC) && 4148 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4149 return; 4150 mode = SET_PROMISC_MODE_OFF; 4151 if (dev->flags & IFF_PROMISC) 4152 mode = SET_PROMISC_MODE_ON; 4153 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4154 4155 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4156 sizeof(struct qeth_ipacmd_setadpparms)); 4157 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4158 cmd->data.setadapterparms.data.mode = mode; 4159 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4160 } 4161 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4162 4163 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4164 { 4165 struct qeth_card *card; 4166 char dbf_text[15]; 4167 4168 card = dev->ml_priv; 4169 4170 QETH_CARD_TEXT(card, 4, "chgmtu"); 4171 sprintf(dbf_text, "%8x", new_mtu); 4172 QETH_CARD_TEXT(card, 4, dbf_text); 4173 4174 if (new_mtu < 64) 4175 return -EINVAL; 4176 if (new_mtu > 65535) 4177 return -EINVAL; 4178 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) && 4179 (!qeth_mtu_is_valid(card, new_mtu))) 4180 return -EINVAL; 4181 dev->mtu = new_mtu; 4182 return 0; 4183 } 4184 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4185 4186 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4187 { 4188 struct qeth_card *card; 4189 4190 card = dev->ml_priv; 4191 4192 QETH_CARD_TEXT(card, 5, "getstat"); 4193 4194 return &card->stats; 4195 } 4196 EXPORT_SYMBOL_GPL(qeth_get_stats); 4197 4198 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4199 struct qeth_reply *reply, unsigned long data) 4200 { 4201 struct qeth_ipa_cmd *cmd; 4202 4203 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4204 4205 cmd = (struct qeth_ipa_cmd *) data; 4206 if (!card->options.layer2 || 4207 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4208 memcpy(card->dev->dev_addr, 4209 &cmd->data.setadapterparms.data.change_addr.addr, 4210 OSA_ADDR_LEN); 4211 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4212 } 4213 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4214 return 0; 4215 } 4216 4217 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4218 { 4219 int rc; 4220 struct qeth_cmd_buffer *iob; 4221 struct qeth_ipa_cmd *cmd; 4222 4223 QETH_CARD_TEXT(card, 4, "chgmac"); 4224 4225 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4226 sizeof(struct qeth_ipacmd_setadpparms)); 4227 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4228 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4229 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; 4230 memcpy(&cmd->data.setadapterparms.data.change_addr.addr, 4231 card->dev->dev_addr, OSA_ADDR_LEN); 4232 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4233 NULL); 4234 return rc; 4235 } 4236 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4237 4238 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4239 struct qeth_reply *reply, unsigned long data) 4240 { 4241 struct qeth_ipa_cmd *cmd; 4242 struct qeth_set_access_ctrl *access_ctrl_req; 4243 int fallback = *(int *)reply->param; 4244 4245 QETH_CARD_TEXT(card, 4, "setaccb"); 4246 4247 cmd = (struct qeth_ipa_cmd *) data; 4248 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4249 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4250 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4251 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4252 cmd->data.setadapterparms.hdr.return_code); 4253 if (cmd->data.setadapterparms.hdr.return_code != 4254 SET_ACCESS_CTRL_RC_SUCCESS) 4255 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4256 card->gdev->dev.kobj.name, 4257 access_ctrl_req->subcmd_code, 4258 cmd->data.setadapterparms.hdr.return_code); 4259 switch (cmd->data.setadapterparms.hdr.return_code) { 4260 case SET_ACCESS_CTRL_RC_SUCCESS: 4261 if (card->options.isolation == ISOLATION_MODE_NONE) { 4262 dev_info(&card->gdev->dev, 4263 "QDIO data connection isolation is deactivated\n"); 4264 } else { 4265 dev_info(&card->gdev->dev, 4266 "QDIO data connection isolation is activated\n"); 4267 } 4268 break; 4269 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4270 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4271 "deactivated\n", dev_name(&card->gdev->dev)); 4272 if (fallback) 4273 card->options.isolation = card->options.prev_isolation; 4274 break; 4275 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4276 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4277 " activated\n", dev_name(&card->gdev->dev)); 4278 if (fallback) 4279 card->options.isolation = card->options.prev_isolation; 4280 break; 4281 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4282 dev_err(&card->gdev->dev, "Adapter does not " 4283 "support QDIO data connection isolation\n"); 4284 break; 4285 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4286 dev_err(&card->gdev->dev, 4287 "Adapter is dedicated. " 4288 "QDIO data connection isolation not supported\n"); 4289 if (fallback) 4290 card->options.isolation = card->options.prev_isolation; 4291 break; 4292 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4293 dev_err(&card->gdev->dev, 4294 "TSO does not permit QDIO data connection isolation\n"); 4295 if (fallback) 4296 card->options.isolation = card->options.prev_isolation; 4297 break; 4298 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4299 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4300 "support reflective relay mode\n"); 4301 if (fallback) 4302 card->options.isolation = card->options.prev_isolation; 4303 break; 4304 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4305 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4306 "enabled at the adjacent switch port"); 4307 if (fallback) 4308 card->options.isolation = card->options.prev_isolation; 4309 break; 4310 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4311 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4312 "at the adjacent switch failed\n"); 4313 break; 4314 default: 4315 /* this should never happen */ 4316 if (fallback) 4317 card->options.isolation = card->options.prev_isolation; 4318 break; 4319 } 4320 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4321 return 0; 4322 } 4323 4324 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4325 enum qeth_ipa_isolation_modes isolation, int fallback) 4326 { 4327 int rc; 4328 struct qeth_cmd_buffer *iob; 4329 struct qeth_ipa_cmd *cmd; 4330 struct qeth_set_access_ctrl *access_ctrl_req; 4331 4332 QETH_CARD_TEXT(card, 4, "setacctl"); 4333 4334 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4335 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4336 4337 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4338 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4339 sizeof(struct qeth_set_access_ctrl)); 4340 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4341 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4342 access_ctrl_req->subcmd_code = isolation; 4343 4344 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4345 &fallback); 4346 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4347 return rc; 4348 } 4349 4350 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4351 { 4352 int rc = 0; 4353 4354 QETH_CARD_TEXT(card, 4, "setactlo"); 4355 4356 if ((card->info.type == QETH_CARD_TYPE_OSD || 4357 card->info.type == QETH_CARD_TYPE_OSX) && 4358 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4359 rc = qeth_setadpparms_set_access_ctrl(card, 4360 card->options.isolation, fallback); 4361 if (rc) { 4362 QETH_DBF_MESSAGE(3, 4363 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4364 card->gdev->dev.kobj.name, 4365 rc); 4366 rc = -EOPNOTSUPP; 4367 } 4368 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4369 card->options.isolation = ISOLATION_MODE_NONE; 4370 4371 dev_err(&card->gdev->dev, "Adapter does not " 4372 "support QDIO data connection isolation\n"); 4373 rc = -EOPNOTSUPP; 4374 } 4375 return rc; 4376 } 4377 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4378 4379 void qeth_tx_timeout(struct net_device *dev) 4380 { 4381 struct qeth_card *card; 4382 4383 card = dev->ml_priv; 4384 QETH_CARD_TEXT(card, 4, "txtimeo"); 4385 card->stats.tx_errors++; 4386 qeth_schedule_recovery(card); 4387 } 4388 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4389 4390 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4391 { 4392 struct qeth_card *card = dev->ml_priv; 4393 int rc = 0; 4394 4395 switch (regnum) { 4396 case MII_BMCR: /* Basic mode control register */ 4397 rc = BMCR_FULLDPLX; 4398 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4399 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4400 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4401 rc |= BMCR_SPEED100; 4402 break; 4403 case MII_BMSR: /* Basic mode status register */ 4404 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4405 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4406 BMSR_100BASE4; 4407 break; 4408 case MII_PHYSID1: /* PHYS ID 1 */ 4409 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4410 dev->dev_addr[2]; 4411 rc = (rc >> 5) & 0xFFFF; 4412 break; 4413 case MII_PHYSID2: /* PHYS ID 2 */ 4414 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4415 break; 4416 case MII_ADVERTISE: /* Advertisement control reg */ 4417 rc = ADVERTISE_ALL; 4418 break; 4419 case MII_LPA: /* Link partner ability reg */ 4420 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4421 LPA_100BASE4 | LPA_LPACK; 4422 break; 4423 case MII_EXPANSION: /* Expansion register */ 4424 break; 4425 case MII_DCOUNTER: /* disconnect counter */ 4426 break; 4427 case MII_FCSCOUNTER: /* false carrier counter */ 4428 break; 4429 case MII_NWAYTEST: /* N-way auto-neg test register */ 4430 break; 4431 case MII_RERRCOUNTER: /* rx error counter */ 4432 rc = card->stats.rx_errors; 4433 break; 4434 case MII_SREVISION: /* silicon revision */ 4435 break; 4436 case MII_RESV1: /* reserved 1 */ 4437 break; 4438 case MII_LBRERROR: /* loopback, rx, bypass error */ 4439 break; 4440 case MII_PHYADDR: /* physical address */ 4441 break; 4442 case MII_RESV2: /* reserved 2 */ 4443 break; 4444 case MII_TPISTATUS: /* TPI status for 10mbps */ 4445 break; 4446 case MII_NCONFIG: /* network interface config */ 4447 break; 4448 default: 4449 break; 4450 } 4451 return rc; 4452 } 4453 EXPORT_SYMBOL_GPL(qeth_mdio_read); 4454 4455 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4456 struct qeth_cmd_buffer *iob, int len, 4457 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4458 unsigned long), 4459 void *reply_param) 4460 { 4461 u16 s1, s2; 4462 4463 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4464 4465 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4466 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4467 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4468 /* adjust PDU length fields in IPA_PDU_HEADER */ 4469 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4470 s2 = (u32) len; 4471 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4472 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4473 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4474 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4475 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4476 reply_cb, reply_param); 4477 } 4478 4479 static int qeth_snmp_command_cb(struct qeth_card *card, 4480 struct qeth_reply *reply, unsigned long sdata) 4481 { 4482 struct qeth_ipa_cmd *cmd; 4483 struct qeth_arp_query_info *qinfo; 4484 struct qeth_snmp_cmd *snmp; 4485 unsigned char *data; 4486 __u16 data_len; 4487 4488 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4489 4490 cmd = (struct qeth_ipa_cmd *) sdata; 4491 data = (unsigned char *)((char *)cmd - reply->offset); 4492 qinfo = (struct qeth_arp_query_info *) reply->param; 4493 snmp = &cmd->data.setadapterparms.data.snmp; 4494 4495 if (cmd->hdr.return_code) { 4496 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code); 4497 return 0; 4498 } 4499 if (cmd->data.setadapterparms.hdr.return_code) { 4500 cmd->hdr.return_code = 4501 cmd->data.setadapterparms.hdr.return_code; 4502 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code); 4503 return 0; 4504 } 4505 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4506 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4507 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4508 else 4509 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4510 4511 /* check if there is enough room in userspace */ 4512 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4513 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4514 cmd->hdr.return_code = IPA_RC_ENOMEM; 4515 return 0; 4516 } 4517 QETH_CARD_TEXT_(card, 4, "snore%i", 4518 cmd->data.setadapterparms.hdr.used_total); 4519 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4520 cmd->data.setadapterparms.hdr.seq_no); 4521 /*copy entries to user buffer*/ 4522 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4523 memcpy(qinfo->udata + qinfo->udata_offset, 4524 (char *)snmp, 4525 data_len + offsetof(struct qeth_snmp_cmd, data)); 4526 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4527 } else { 4528 memcpy(qinfo->udata + qinfo->udata_offset, 4529 (char *)&snmp->request, data_len); 4530 } 4531 qinfo->udata_offset += data_len; 4532 /* check if all replies received ... */ 4533 QETH_CARD_TEXT_(card, 4, "srtot%i", 4534 cmd->data.setadapterparms.hdr.used_total); 4535 QETH_CARD_TEXT_(card, 4, "srseq%i", 4536 cmd->data.setadapterparms.hdr.seq_no); 4537 if (cmd->data.setadapterparms.hdr.seq_no < 4538 cmd->data.setadapterparms.hdr.used_total) 4539 return 1; 4540 return 0; 4541 } 4542 4543 int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4544 { 4545 struct qeth_cmd_buffer *iob; 4546 struct qeth_ipa_cmd *cmd; 4547 struct qeth_snmp_ureq *ureq; 4548 unsigned int req_len; 4549 struct qeth_arp_query_info qinfo = {0, }; 4550 int rc = 0; 4551 4552 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4553 4554 if (card->info.guestlan) 4555 return -EOPNOTSUPP; 4556 4557 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4558 (!card->options.layer2)) { 4559 return -EOPNOTSUPP; 4560 } 4561 /* skip 4 bytes (data_len struct member) to get req_len */ 4562 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4563 return -EFAULT; 4564 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4565 sizeof(struct qeth_ipacmd_hdr) - 4566 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4567 return -EINVAL; 4568 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4569 if (IS_ERR(ureq)) { 4570 QETH_CARD_TEXT(card, 2, "snmpnome"); 4571 return PTR_ERR(ureq); 4572 } 4573 qinfo.udata_len = ureq->hdr.data_len; 4574 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4575 if (!qinfo.udata) { 4576 kfree(ureq); 4577 return -ENOMEM; 4578 } 4579 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4580 4581 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4582 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4583 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4584 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4585 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4586 qeth_snmp_command_cb, (void *)&qinfo); 4587 if (rc) 4588 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4589 QETH_CARD_IFNAME(card), rc); 4590 else { 4591 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4592 rc = -EFAULT; 4593 } 4594 4595 kfree(ureq); 4596 kfree(qinfo.udata); 4597 return rc; 4598 } 4599 EXPORT_SYMBOL_GPL(qeth_snmp_command); 4600 4601 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4602 struct qeth_reply *reply, unsigned long data) 4603 { 4604 struct qeth_ipa_cmd *cmd; 4605 struct qeth_qoat_priv *priv; 4606 char *resdata; 4607 int resdatalen; 4608 4609 QETH_CARD_TEXT(card, 3, "qoatcb"); 4610 4611 cmd = (struct qeth_ipa_cmd *)data; 4612 priv = (struct qeth_qoat_priv *)reply->param; 4613 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4614 resdata = (char *)data + 28; 4615 4616 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4617 cmd->hdr.return_code = IPA_RC_FFFF; 4618 return 0; 4619 } 4620 4621 memcpy((priv->buffer + priv->response_len), resdata, 4622 resdatalen); 4623 priv->response_len += resdatalen; 4624 4625 if (cmd->data.setadapterparms.hdr.seq_no < 4626 cmd->data.setadapterparms.hdr.used_total) 4627 return 1; 4628 return 0; 4629 } 4630 4631 int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4632 { 4633 int rc = 0; 4634 struct qeth_cmd_buffer *iob; 4635 struct qeth_ipa_cmd *cmd; 4636 struct qeth_query_oat *oat_req; 4637 struct qeth_query_oat_data oat_data; 4638 struct qeth_qoat_priv priv; 4639 void __user *tmp; 4640 4641 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4642 4643 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4644 rc = -EOPNOTSUPP; 4645 goto out; 4646 } 4647 4648 if (copy_from_user(&oat_data, udata, 4649 sizeof(struct qeth_query_oat_data))) { 4650 rc = -EFAULT; 4651 goto out; 4652 } 4653 4654 priv.buffer_len = oat_data.buffer_len; 4655 priv.response_len = 0; 4656 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4657 if (!priv.buffer) { 4658 rc = -ENOMEM; 4659 goto out; 4660 } 4661 4662 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4663 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4664 sizeof(struct qeth_query_oat)); 4665 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4666 oat_req = &cmd->data.setadapterparms.data.query_oat; 4667 oat_req->subcmd_code = oat_data.command; 4668 4669 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4670 &priv); 4671 if (!rc) { 4672 if (is_compat_task()) 4673 tmp = compat_ptr(oat_data.ptr); 4674 else 4675 tmp = (void __user *)(unsigned long)oat_data.ptr; 4676 4677 if (copy_to_user(tmp, priv.buffer, 4678 priv.response_len)) { 4679 rc = -EFAULT; 4680 goto out_free; 4681 } 4682 4683 oat_data.response_len = priv.response_len; 4684 4685 if (copy_to_user(udata, &oat_data, 4686 sizeof(struct qeth_query_oat_data))) 4687 rc = -EFAULT; 4688 } else 4689 if (rc == IPA_RC_FFFF) 4690 rc = -EFAULT; 4691 4692 out_free: 4693 kfree(priv.buffer); 4694 out: 4695 return rc; 4696 } 4697 EXPORT_SYMBOL_GPL(qeth_query_oat_command); 4698 4699 static int qeth_query_card_info_cb(struct qeth_card *card, 4700 struct qeth_reply *reply, unsigned long data) 4701 { 4702 struct qeth_ipa_cmd *cmd; 4703 struct qeth_query_card_info *card_info; 4704 struct carrier_info *carrier_info; 4705 4706 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4707 carrier_info = (struct carrier_info *)reply->param; 4708 cmd = (struct qeth_ipa_cmd *)data; 4709 card_info = &cmd->data.setadapterparms.data.card_info; 4710 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4711 carrier_info->card_type = card_info->card_type; 4712 carrier_info->port_mode = card_info->port_mode; 4713 carrier_info->port_speed = card_info->port_speed; 4714 } 4715 4716 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4717 return 0; 4718 } 4719 4720 int qeth_query_card_info(struct qeth_card *card, 4721 struct carrier_info *carrier_info) 4722 { 4723 struct qeth_cmd_buffer *iob; 4724 4725 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4726 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4727 return -EOPNOTSUPP; 4728 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4729 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4730 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4731 (void *)carrier_info); 4732 } 4733 EXPORT_SYMBOL_GPL(qeth_query_card_info); 4734 4735 static inline int qeth_get_qdio_q_format(struct qeth_card *card) 4736 { 4737 switch (card->info.type) { 4738 case QETH_CARD_TYPE_IQD: 4739 return 2; 4740 default: 4741 return 0; 4742 } 4743 } 4744 4745 static void qeth_determine_capabilities(struct qeth_card *card) 4746 { 4747 int rc; 4748 int length; 4749 char *prcd; 4750 struct ccw_device *ddev; 4751 int ddev_offline = 0; 4752 4753 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4754 ddev = CARD_DDEV(card); 4755 if (!ddev->online) { 4756 ddev_offline = 1; 4757 rc = ccw_device_set_online(ddev); 4758 if (rc) { 4759 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4760 goto out; 4761 } 4762 } 4763 4764 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4765 if (rc) { 4766 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4767 dev_name(&card->gdev->dev), rc); 4768 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4769 goto out_offline; 4770 } 4771 qeth_configure_unitaddr(card, prcd); 4772 if (ddev_offline) 4773 qeth_configure_blkt_default(card, prcd); 4774 kfree(prcd); 4775 4776 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4777 if (rc) 4778 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4779 4780 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4781 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1); 4782 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3); 4783 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4784 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4785 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4786 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4787 dev_info(&card->gdev->dev, 4788 "Completion Queueing supported\n"); 4789 } else { 4790 card->options.cq = QETH_CQ_NOTAVAILABLE; 4791 } 4792 4793 4794 out_offline: 4795 if (ddev_offline == 1) 4796 ccw_device_set_offline(ddev); 4797 out: 4798 return; 4799 } 4800 4801 static inline void qeth_qdio_establish_cq(struct qeth_card *card, 4802 struct qdio_buffer **in_sbal_ptrs, 4803 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) { 4804 int i; 4805 4806 if (card->options.cq == QETH_CQ_ENABLED) { 4807 int offset = QDIO_MAX_BUFFERS_PER_Q * 4808 (card->qdio.no_in_queues - 1); 4809 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1); 4810 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4811 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4812 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4813 } 4814 4815 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4816 } 4817 } 4818 4819 static int qeth_qdio_establish(struct qeth_card *card) 4820 { 4821 struct qdio_initialize init_data; 4822 char *qib_param_field; 4823 struct qdio_buffer **in_sbal_ptrs; 4824 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4825 struct qdio_buffer **out_sbal_ptrs; 4826 int i, j, k; 4827 int rc = 0; 4828 4829 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4830 4831 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4832 GFP_KERNEL); 4833 if (!qib_param_field) { 4834 rc = -ENOMEM; 4835 goto out_free_nothing; 4836 } 4837 4838 qeth_create_qib_param_field(card, qib_param_field); 4839 qeth_create_qib_param_field_blkt(card, qib_param_field); 4840 4841 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4842 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4843 GFP_KERNEL); 4844 if (!in_sbal_ptrs) { 4845 rc = -ENOMEM; 4846 goto out_free_qib_param; 4847 } 4848 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4849 in_sbal_ptrs[i] = (struct qdio_buffer *) 4850 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4851 } 4852 4853 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4854 GFP_KERNEL); 4855 if (!queue_start_poll) { 4856 rc = -ENOMEM; 4857 goto out_free_in_sbals; 4858 } 4859 for (i = 0; i < card->qdio.no_in_queues; ++i) 4860 queue_start_poll[i] = card->discipline->start_poll; 4861 4862 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4863 4864 out_sbal_ptrs = 4865 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 4866 sizeof(void *), GFP_KERNEL); 4867 if (!out_sbal_ptrs) { 4868 rc = -ENOMEM; 4869 goto out_free_queue_start_poll; 4870 } 4871 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4872 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4873 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4874 card->qdio.out_qs[i]->bufs[j]->buffer); 4875 } 4876 4877 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4878 init_data.cdev = CARD_DDEV(card); 4879 init_data.q_format = qeth_get_qdio_q_format(card); 4880 init_data.qib_param_field_format = 0; 4881 init_data.qib_param_field = qib_param_field; 4882 init_data.no_input_qs = card->qdio.no_in_queues; 4883 init_data.no_output_qs = card->qdio.no_out_queues; 4884 init_data.input_handler = card->discipline->input_handler; 4885 init_data.output_handler = card->discipline->output_handler; 4886 init_data.queue_start_poll_array = queue_start_poll; 4887 init_data.int_parm = (unsigned long) card; 4888 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4889 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4890 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4891 init_data.scan_threshold = 4892 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 4893 4894 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4895 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4896 rc = qdio_allocate(&init_data); 4897 if (rc) { 4898 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4899 goto out; 4900 } 4901 rc = qdio_establish(&init_data); 4902 if (rc) { 4903 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4904 qdio_free(CARD_DDEV(card)); 4905 } 4906 } 4907 4908 switch (card->options.cq) { 4909 case QETH_CQ_ENABLED: 4910 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4911 break; 4912 case QETH_CQ_DISABLED: 4913 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4914 break; 4915 default: 4916 break; 4917 } 4918 out: 4919 kfree(out_sbal_ptrs); 4920 out_free_queue_start_poll: 4921 kfree(queue_start_poll); 4922 out_free_in_sbals: 4923 kfree(in_sbal_ptrs); 4924 out_free_qib_param: 4925 kfree(qib_param_field); 4926 out_free_nothing: 4927 return rc; 4928 } 4929 4930 static void qeth_core_free_card(struct qeth_card *card) 4931 { 4932 4933 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 4934 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 4935 qeth_clean_channel(&card->read); 4936 qeth_clean_channel(&card->write); 4937 if (card->dev) 4938 free_netdev(card->dev); 4939 kfree(card->ip_tbd_list); 4940 qeth_free_qdio_buffers(card); 4941 unregister_service_level(&card->qeth_service_level); 4942 kfree(card); 4943 } 4944 4945 void qeth_trace_features(struct qeth_card *card) 4946 { 4947 QETH_CARD_TEXT(card, 2, "features"); 4948 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs); 4949 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs); 4950 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs); 4951 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs); 4952 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs); 4953 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs); 4954 QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support); 4955 } 4956 EXPORT_SYMBOL_GPL(qeth_trace_features); 4957 4958 static struct ccw_device_id qeth_ids[] = { 4959 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 4960 .driver_info = QETH_CARD_TYPE_OSD}, 4961 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 4962 .driver_info = QETH_CARD_TYPE_IQD}, 4963 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 4964 .driver_info = QETH_CARD_TYPE_OSN}, 4965 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 4966 .driver_info = QETH_CARD_TYPE_OSM}, 4967 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 4968 .driver_info = QETH_CARD_TYPE_OSX}, 4969 {}, 4970 }; 4971 MODULE_DEVICE_TABLE(ccw, qeth_ids); 4972 4973 static struct ccw_driver qeth_ccw_driver = { 4974 .driver = { 4975 .owner = THIS_MODULE, 4976 .name = "qeth", 4977 }, 4978 .ids = qeth_ids, 4979 .probe = ccwgroup_probe_ccwdev, 4980 .remove = ccwgroup_remove_ccwdev, 4981 }; 4982 4983 int qeth_core_hardsetup_card(struct qeth_card *card) 4984 { 4985 int retries = 3; 4986 int rc; 4987 4988 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 4989 atomic_set(&card->force_alloc_skb, 0); 4990 qeth_update_from_chp_desc(card); 4991 retry: 4992 if (retries < 3) 4993 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 4994 dev_name(&card->gdev->dev)); 4995 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 4996 ccw_device_set_offline(CARD_DDEV(card)); 4997 ccw_device_set_offline(CARD_WDEV(card)); 4998 ccw_device_set_offline(CARD_RDEV(card)); 4999 qdio_free(CARD_DDEV(card)); 5000 rc = ccw_device_set_online(CARD_RDEV(card)); 5001 if (rc) 5002 goto retriable; 5003 rc = ccw_device_set_online(CARD_WDEV(card)); 5004 if (rc) 5005 goto retriable; 5006 rc = ccw_device_set_online(CARD_DDEV(card)); 5007 if (rc) 5008 goto retriable; 5009 retriable: 5010 if (rc == -ERESTARTSYS) { 5011 QETH_DBF_TEXT(SETUP, 2, "break1"); 5012 return rc; 5013 } else if (rc) { 5014 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5015 if (--retries < 0) 5016 goto out; 5017 else 5018 goto retry; 5019 } 5020 qeth_determine_capabilities(card); 5021 qeth_init_tokens(card); 5022 qeth_init_func_level(card); 5023 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5024 if (rc == -ERESTARTSYS) { 5025 QETH_DBF_TEXT(SETUP, 2, "break2"); 5026 return rc; 5027 } else if (rc) { 5028 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5029 if (--retries < 0) 5030 goto out; 5031 else 5032 goto retry; 5033 } 5034 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5035 if (rc == -ERESTARTSYS) { 5036 QETH_DBF_TEXT(SETUP, 2, "break3"); 5037 return rc; 5038 } else if (rc) { 5039 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5040 if (--retries < 0) 5041 goto out; 5042 else 5043 goto retry; 5044 } 5045 card->read_or_write_problem = 0; 5046 rc = qeth_mpc_initialize(card); 5047 if (rc) { 5048 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5049 goto out; 5050 } 5051 5052 card->options.ipa4.supported_funcs = 0; 5053 card->options.adp.supported_funcs = 0; 5054 card->options.sbp.supported_funcs = 0; 5055 card->info.diagass_support = 0; 5056 qeth_query_ipassists(card, QETH_PROT_IPV4); 5057 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) 5058 qeth_query_setadapterparms(card); 5059 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) 5060 qeth_query_setdiagass(card); 5061 return 0; 5062 out: 5063 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5064 "an error on the device\n"); 5065 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5066 dev_name(&card->gdev->dev), rc); 5067 return rc; 5068 } 5069 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5070 5071 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer, 5072 struct qdio_buffer_element *element, 5073 struct sk_buff **pskb, int offset, int *pfrag, int data_len) 5074 { 5075 struct page *page = virt_to_page(element->addr); 5076 if (*pskb == NULL) { 5077 if (qethbuffer->rx_skb) { 5078 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */ 5079 *pskb = qethbuffer->rx_skb; 5080 qethbuffer->rx_skb = NULL; 5081 } else { 5082 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 5083 if (!(*pskb)) 5084 return -ENOMEM; 5085 } 5086 5087 skb_reserve(*pskb, ETH_HLEN); 5088 if (data_len <= QETH_RX_PULL_LEN) { 5089 memcpy(skb_put(*pskb, data_len), element->addr + offset, 5090 data_len); 5091 } else { 5092 get_page(page); 5093 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN), 5094 element->addr + offset, QETH_RX_PULL_LEN); 5095 skb_fill_page_desc(*pskb, *pfrag, page, 5096 offset + QETH_RX_PULL_LEN, 5097 data_len - QETH_RX_PULL_LEN); 5098 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN; 5099 (*pskb)->len += data_len - QETH_RX_PULL_LEN; 5100 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN; 5101 (*pfrag)++; 5102 } 5103 } else { 5104 get_page(page); 5105 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len); 5106 (*pskb)->data_len += data_len; 5107 (*pskb)->len += data_len; 5108 (*pskb)->truesize += data_len; 5109 (*pfrag)++; 5110 } 5111 5112 5113 return 0; 5114 } 5115 5116 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5117 struct qeth_qdio_buffer *qethbuffer, 5118 struct qdio_buffer_element **__element, int *__offset, 5119 struct qeth_hdr **hdr) 5120 { 5121 struct qdio_buffer_element *element = *__element; 5122 struct qdio_buffer *buffer = qethbuffer->buffer; 5123 int offset = *__offset; 5124 struct sk_buff *skb = NULL; 5125 int skb_len = 0; 5126 void *data_ptr; 5127 int data_len; 5128 int headroom = 0; 5129 int use_rx_sg = 0; 5130 int frag = 0; 5131 5132 /* qeth_hdr must not cross element boundaries */ 5133 if (element->length < offset + sizeof(struct qeth_hdr)) { 5134 if (qeth_is_last_sbale(element)) 5135 return NULL; 5136 element++; 5137 offset = 0; 5138 if (element->length < sizeof(struct qeth_hdr)) 5139 return NULL; 5140 } 5141 *hdr = element->addr + offset; 5142 5143 offset += sizeof(struct qeth_hdr); 5144 switch ((*hdr)->hdr.l2.id) { 5145 case QETH_HEADER_TYPE_LAYER2: 5146 skb_len = (*hdr)->hdr.l2.pkt_length; 5147 break; 5148 case QETH_HEADER_TYPE_LAYER3: 5149 skb_len = (*hdr)->hdr.l3.length; 5150 headroom = ETH_HLEN; 5151 break; 5152 case QETH_HEADER_TYPE_OSN: 5153 skb_len = (*hdr)->hdr.osn.pdu_length; 5154 headroom = sizeof(struct qeth_hdr); 5155 break; 5156 default: 5157 break; 5158 } 5159 5160 if (!skb_len) 5161 return NULL; 5162 5163 if (((skb_len >= card->options.rx_sg_cb) && 5164 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5165 (!atomic_read(&card->force_alloc_skb))) || 5166 (card->options.cq == QETH_CQ_ENABLED)) { 5167 use_rx_sg = 1; 5168 } else { 5169 skb = dev_alloc_skb(skb_len + headroom); 5170 if (!skb) 5171 goto no_mem; 5172 if (headroom) 5173 skb_reserve(skb, headroom); 5174 } 5175 5176 data_ptr = element->addr + offset; 5177 while (skb_len) { 5178 data_len = min(skb_len, (int)(element->length - offset)); 5179 if (data_len) { 5180 if (use_rx_sg) { 5181 if (qeth_create_skb_frag(qethbuffer, element, 5182 &skb, offset, &frag, data_len)) 5183 goto no_mem; 5184 } else { 5185 memcpy(skb_put(skb, data_len), data_ptr, 5186 data_len); 5187 } 5188 } 5189 skb_len -= data_len; 5190 if (skb_len) { 5191 if (qeth_is_last_sbale(element)) { 5192 QETH_CARD_TEXT(card, 4, "unexeob"); 5193 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5194 dev_kfree_skb_any(skb); 5195 card->stats.rx_errors++; 5196 return NULL; 5197 } 5198 element++; 5199 offset = 0; 5200 data_ptr = element->addr; 5201 } else { 5202 offset += data_len; 5203 } 5204 } 5205 *__element = element; 5206 *__offset = offset; 5207 if (use_rx_sg && card->options.performance_stats) { 5208 card->perf_stats.sg_skbs_rx++; 5209 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5210 } 5211 return skb; 5212 no_mem: 5213 if (net_ratelimit()) { 5214 QETH_CARD_TEXT(card, 2, "noskbmem"); 5215 } 5216 card->stats.rx_dropped++; 5217 return NULL; 5218 } 5219 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5220 5221 static void qeth_unregister_dbf_views(void) 5222 { 5223 int x; 5224 for (x = 0; x < QETH_DBF_INFOS; x++) { 5225 debug_unregister(qeth_dbf[x].id); 5226 qeth_dbf[x].id = NULL; 5227 } 5228 } 5229 5230 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5231 { 5232 char dbf_txt_buf[32]; 5233 va_list args; 5234 5235 if (!debug_level_enabled(id, level)) 5236 return; 5237 va_start(args, fmt); 5238 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5239 va_end(args); 5240 debug_text_event(id, level, dbf_txt_buf); 5241 } 5242 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5243 5244 static int qeth_register_dbf_views(void) 5245 { 5246 int ret; 5247 int x; 5248 5249 for (x = 0; x < QETH_DBF_INFOS; x++) { 5250 /* register the areas */ 5251 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5252 qeth_dbf[x].pages, 5253 qeth_dbf[x].areas, 5254 qeth_dbf[x].len); 5255 if (qeth_dbf[x].id == NULL) { 5256 qeth_unregister_dbf_views(); 5257 return -ENOMEM; 5258 } 5259 5260 /* register a view */ 5261 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5262 if (ret) { 5263 qeth_unregister_dbf_views(); 5264 return ret; 5265 } 5266 5267 /* set a passing level */ 5268 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5269 } 5270 5271 return 0; 5272 } 5273 5274 int qeth_core_load_discipline(struct qeth_card *card, 5275 enum qeth_discipline_id discipline) 5276 { 5277 int rc = 0; 5278 mutex_lock(&qeth_mod_mutex); 5279 switch (discipline) { 5280 case QETH_DISCIPLINE_LAYER3: 5281 card->discipline = try_then_request_module( 5282 symbol_get(qeth_l3_discipline), "qeth_l3"); 5283 break; 5284 case QETH_DISCIPLINE_LAYER2: 5285 card->discipline = try_then_request_module( 5286 symbol_get(qeth_l2_discipline), "qeth_l2"); 5287 break; 5288 } 5289 if (!card->discipline) { 5290 dev_err(&card->gdev->dev, "There is no kernel module to " 5291 "support discipline %d\n", discipline); 5292 rc = -EINVAL; 5293 } 5294 mutex_unlock(&qeth_mod_mutex); 5295 return rc; 5296 } 5297 5298 void qeth_core_free_discipline(struct qeth_card *card) 5299 { 5300 if (card->options.layer2) 5301 symbol_put(qeth_l2_discipline); 5302 else 5303 symbol_put(qeth_l3_discipline); 5304 card->discipline = NULL; 5305 } 5306 5307 static const struct device_type qeth_generic_devtype = { 5308 .name = "qeth_generic", 5309 .groups = qeth_generic_attr_groups, 5310 }; 5311 static const struct device_type qeth_osn_devtype = { 5312 .name = "qeth_osn", 5313 .groups = qeth_osn_attr_groups, 5314 }; 5315 5316 #define DBF_NAME_LEN 20 5317 5318 struct qeth_dbf_entry { 5319 char dbf_name[DBF_NAME_LEN]; 5320 debug_info_t *dbf_info; 5321 struct list_head dbf_list; 5322 }; 5323 5324 static LIST_HEAD(qeth_dbf_list); 5325 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5326 5327 static debug_info_t *qeth_get_dbf_entry(char *name) 5328 { 5329 struct qeth_dbf_entry *entry; 5330 debug_info_t *rc = NULL; 5331 5332 mutex_lock(&qeth_dbf_list_mutex); 5333 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5334 if (strcmp(entry->dbf_name, name) == 0) { 5335 rc = entry->dbf_info; 5336 break; 5337 } 5338 } 5339 mutex_unlock(&qeth_dbf_list_mutex); 5340 return rc; 5341 } 5342 5343 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5344 { 5345 struct qeth_dbf_entry *new_entry; 5346 5347 card->debug = debug_register(name, 2, 1, 8); 5348 if (!card->debug) { 5349 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5350 goto err; 5351 } 5352 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5353 goto err_dbg; 5354 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5355 if (!new_entry) 5356 goto err_dbg; 5357 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5358 new_entry->dbf_info = card->debug; 5359 mutex_lock(&qeth_dbf_list_mutex); 5360 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5361 mutex_unlock(&qeth_dbf_list_mutex); 5362 5363 return 0; 5364 5365 err_dbg: 5366 debug_unregister(card->debug); 5367 err: 5368 return -ENOMEM; 5369 } 5370 5371 static void qeth_clear_dbf_list(void) 5372 { 5373 struct qeth_dbf_entry *entry, *tmp; 5374 5375 mutex_lock(&qeth_dbf_list_mutex); 5376 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5377 list_del(&entry->dbf_list); 5378 debug_unregister(entry->dbf_info); 5379 kfree(entry); 5380 } 5381 mutex_unlock(&qeth_dbf_list_mutex); 5382 } 5383 5384 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5385 { 5386 struct qeth_card *card; 5387 struct device *dev; 5388 int rc; 5389 unsigned long flags; 5390 char dbf_name[DBF_NAME_LEN]; 5391 5392 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5393 5394 dev = &gdev->dev; 5395 if (!get_device(dev)) 5396 return -ENODEV; 5397 5398 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5399 5400 card = qeth_alloc_card(); 5401 if (!card) { 5402 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5403 rc = -ENOMEM; 5404 goto err_dev; 5405 } 5406 5407 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5408 dev_name(&gdev->dev)); 5409 card->debug = qeth_get_dbf_entry(dbf_name); 5410 if (!card->debug) { 5411 rc = qeth_add_dbf_entry(card, dbf_name); 5412 if (rc) 5413 goto err_card; 5414 } 5415 5416 card->read.ccwdev = gdev->cdev[0]; 5417 card->write.ccwdev = gdev->cdev[1]; 5418 card->data.ccwdev = gdev->cdev[2]; 5419 dev_set_drvdata(&gdev->dev, card); 5420 card->gdev = gdev; 5421 gdev->cdev[0]->handler = qeth_irq; 5422 gdev->cdev[1]->handler = qeth_irq; 5423 gdev->cdev[2]->handler = qeth_irq; 5424 5425 rc = qeth_determine_card_type(card); 5426 if (rc) { 5427 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5428 goto err_card; 5429 } 5430 rc = qeth_setup_card(card); 5431 if (rc) { 5432 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5433 goto err_card; 5434 } 5435 5436 if (card->info.type == QETH_CARD_TYPE_OSN) 5437 gdev->dev.type = &qeth_osn_devtype; 5438 else 5439 gdev->dev.type = &qeth_generic_devtype; 5440 5441 switch (card->info.type) { 5442 case QETH_CARD_TYPE_OSN: 5443 case QETH_CARD_TYPE_OSM: 5444 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2); 5445 if (rc) 5446 goto err_card; 5447 rc = card->discipline->setup(card->gdev); 5448 if (rc) 5449 goto err_disc; 5450 case QETH_CARD_TYPE_OSD: 5451 case QETH_CARD_TYPE_OSX: 5452 default: 5453 break; 5454 } 5455 5456 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5457 list_add_tail(&card->list, &qeth_core_card_list.list); 5458 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5459 5460 qeth_determine_capabilities(card); 5461 return 0; 5462 5463 err_disc: 5464 qeth_core_free_discipline(card); 5465 err_card: 5466 qeth_core_free_card(card); 5467 err_dev: 5468 put_device(dev); 5469 return rc; 5470 } 5471 5472 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5473 { 5474 unsigned long flags; 5475 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5476 5477 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5478 5479 if (card->discipline) { 5480 card->discipline->remove(gdev); 5481 qeth_core_free_discipline(card); 5482 } 5483 5484 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5485 list_del(&card->list); 5486 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5487 qeth_core_free_card(card); 5488 dev_set_drvdata(&gdev->dev, NULL); 5489 put_device(&gdev->dev); 5490 return; 5491 } 5492 5493 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5494 { 5495 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5496 int rc = 0; 5497 int def_discipline; 5498 5499 if (!card->discipline) { 5500 if (card->info.type == QETH_CARD_TYPE_IQD) 5501 def_discipline = QETH_DISCIPLINE_LAYER3; 5502 else 5503 def_discipline = QETH_DISCIPLINE_LAYER2; 5504 rc = qeth_core_load_discipline(card, def_discipline); 5505 if (rc) 5506 goto err; 5507 rc = card->discipline->setup(card->gdev); 5508 if (rc) 5509 goto err; 5510 } 5511 rc = card->discipline->set_online(gdev); 5512 err: 5513 return rc; 5514 } 5515 5516 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5517 { 5518 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5519 return card->discipline->set_offline(gdev); 5520 } 5521 5522 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5523 { 5524 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5525 if (card->discipline && card->discipline->shutdown) 5526 card->discipline->shutdown(gdev); 5527 } 5528 5529 static int qeth_core_prepare(struct ccwgroup_device *gdev) 5530 { 5531 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5532 if (card->discipline && card->discipline->prepare) 5533 return card->discipline->prepare(gdev); 5534 return 0; 5535 } 5536 5537 static void qeth_core_complete(struct ccwgroup_device *gdev) 5538 { 5539 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5540 if (card->discipline && card->discipline->complete) 5541 card->discipline->complete(gdev); 5542 } 5543 5544 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5545 { 5546 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5547 if (card->discipline && card->discipline->freeze) 5548 return card->discipline->freeze(gdev); 5549 return 0; 5550 } 5551 5552 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5553 { 5554 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5555 if (card->discipline && card->discipline->thaw) 5556 return card->discipline->thaw(gdev); 5557 return 0; 5558 } 5559 5560 static int qeth_core_restore(struct ccwgroup_device *gdev) 5561 { 5562 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5563 if (card->discipline && card->discipline->restore) 5564 return card->discipline->restore(gdev); 5565 return 0; 5566 } 5567 5568 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5569 .driver = { 5570 .owner = THIS_MODULE, 5571 .name = "qeth", 5572 }, 5573 .setup = qeth_core_probe_device, 5574 .remove = qeth_core_remove_device, 5575 .set_online = qeth_core_set_online, 5576 .set_offline = qeth_core_set_offline, 5577 .shutdown = qeth_core_shutdown, 5578 .prepare = qeth_core_prepare, 5579 .complete = qeth_core_complete, 5580 .freeze = qeth_core_freeze, 5581 .thaw = qeth_core_thaw, 5582 .restore = qeth_core_restore, 5583 }; 5584 5585 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv, 5586 const char *buf, size_t count) 5587 { 5588 int err; 5589 5590 err = ccwgroup_create_dev(qeth_core_root_dev, 5591 &qeth_core_ccwgroup_driver, 3, buf); 5592 5593 return err ? err : count; 5594 } 5595 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store); 5596 5597 static struct attribute *qeth_drv_attrs[] = { 5598 &driver_attr_group.attr, 5599 NULL, 5600 }; 5601 static struct attribute_group qeth_drv_attr_group = { 5602 .attrs = qeth_drv_attrs, 5603 }; 5604 static const struct attribute_group *qeth_drv_attr_groups[] = { 5605 &qeth_drv_attr_group, 5606 NULL, 5607 }; 5608 5609 static struct { 5610 const char str[ETH_GSTRING_LEN]; 5611 } qeth_ethtool_stats_keys[] = { 5612 /* 0 */{"rx skbs"}, 5613 {"rx buffers"}, 5614 {"tx skbs"}, 5615 {"tx buffers"}, 5616 {"tx skbs no packing"}, 5617 {"tx buffers no packing"}, 5618 {"tx skbs packing"}, 5619 {"tx buffers packing"}, 5620 {"tx sg skbs"}, 5621 {"tx sg frags"}, 5622 /* 10 */{"rx sg skbs"}, 5623 {"rx sg frags"}, 5624 {"rx sg page allocs"}, 5625 {"tx large kbytes"}, 5626 {"tx large count"}, 5627 {"tx pk state ch n->p"}, 5628 {"tx pk state ch p->n"}, 5629 {"tx pk watermark low"}, 5630 {"tx pk watermark high"}, 5631 {"queue 0 buffer usage"}, 5632 /* 20 */{"queue 1 buffer usage"}, 5633 {"queue 2 buffer usage"}, 5634 {"queue 3 buffer usage"}, 5635 {"rx poll time"}, 5636 {"rx poll count"}, 5637 {"rx do_QDIO time"}, 5638 {"rx do_QDIO count"}, 5639 {"tx handler time"}, 5640 {"tx handler count"}, 5641 {"tx time"}, 5642 /* 30 */{"tx count"}, 5643 {"tx do_QDIO time"}, 5644 {"tx do_QDIO count"}, 5645 {"tx csum"}, 5646 {"tx lin"}, 5647 {"cq handler count"}, 5648 {"cq handler time"} 5649 }; 5650 5651 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 5652 { 5653 switch (stringset) { 5654 case ETH_SS_STATS: 5655 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 5656 default: 5657 return -EINVAL; 5658 } 5659 } 5660 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 5661 5662 void qeth_core_get_ethtool_stats(struct net_device *dev, 5663 struct ethtool_stats *stats, u64 *data) 5664 { 5665 struct qeth_card *card = dev->ml_priv; 5666 data[0] = card->stats.rx_packets - 5667 card->perf_stats.initial_rx_packets; 5668 data[1] = card->perf_stats.bufs_rec; 5669 data[2] = card->stats.tx_packets - 5670 card->perf_stats.initial_tx_packets; 5671 data[3] = card->perf_stats.bufs_sent; 5672 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 5673 - card->perf_stats.skbs_sent_pack; 5674 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 5675 data[6] = card->perf_stats.skbs_sent_pack; 5676 data[7] = card->perf_stats.bufs_sent_pack; 5677 data[8] = card->perf_stats.sg_skbs_sent; 5678 data[9] = card->perf_stats.sg_frags_sent; 5679 data[10] = card->perf_stats.sg_skbs_rx; 5680 data[11] = card->perf_stats.sg_frags_rx; 5681 data[12] = card->perf_stats.sg_alloc_page_rx; 5682 data[13] = (card->perf_stats.large_send_bytes >> 10); 5683 data[14] = card->perf_stats.large_send_cnt; 5684 data[15] = card->perf_stats.sc_dp_p; 5685 data[16] = card->perf_stats.sc_p_dp; 5686 data[17] = QETH_LOW_WATERMARK_PACK; 5687 data[18] = QETH_HIGH_WATERMARK_PACK; 5688 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 5689 data[20] = (card->qdio.no_out_queues > 1) ? 5690 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 5691 data[21] = (card->qdio.no_out_queues > 2) ? 5692 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 5693 data[22] = (card->qdio.no_out_queues > 3) ? 5694 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 5695 data[23] = card->perf_stats.inbound_time; 5696 data[24] = card->perf_stats.inbound_cnt; 5697 data[25] = card->perf_stats.inbound_do_qdio_time; 5698 data[26] = card->perf_stats.inbound_do_qdio_cnt; 5699 data[27] = card->perf_stats.outbound_handler_time; 5700 data[28] = card->perf_stats.outbound_handler_cnt; 5701 data[29] = card->perf_stats.outbound_time; 5702 data[30] = card->perf_stats.outbound_cnt; 5703 data[31] = card->perf_stats.outbound_do_qdio_time; 5704 data[32] = card->perf_stats.outbound_do_qdio_cnt; 5705 data[33] = card->perf_stats.tx_csum; 5706 data[34] = card->perf_stats.tx_lin; 5707 data[35] = card->perf_stats.cq_cnt; 5708 data[36] = card->perf_stats.cq_time; 5709 } 5710 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 5711 5712 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 5713 { 5714 switch (stringset) { 5715 case ETH_SS_STATS: 5716 memcpy(data, &qeth_ethtool_stats_keys, 5717 sizeof(qeth_ethtool_stats_keys)); 5718 break; 5719 default: 5720 WARN_ON(1); 5721 break; 5722 } 5723 } 5724 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 5725 5726 void qeth_core_get_drvinfo(struct net_device *dev, 5727 struct ethtool_drvinfo *info) 5728 { 5729 struct qeth_card *card = dev->ml_priv; 5730 5731 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 5732 sizeof(info->driver)); 5733 strlcpy(info->version, "1.0", sizeof(info->version)); 5734 strlcpy(info->fw_version, card->info.mcl_level, 5735 sizeof(info->fw_version)); 5736 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 5737 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 5738 } 5739 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 5740 5741 /* Helper function to fill 'advertizing' and 'supported' which are the same. */ 5742 /* Autoneg and full-duplex are supported and advertized uncondionally. */ 5743 /* Always advertize and support all speeds up to specified, and only one */ 5744 /* specified port type. */ 5745 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd, 5746 int maxspeed, int porttype) 5747 { 5748 int port_sup, port_adv, spd_sup, spd_adv; 5749 5750 switch (porttype) { 5751 case PORT_TP: 5752 port_sup = SUPPORTED_TP; 5753 port_adv = ADVERTISED_TP; 5754 break; 5755 case PORT_FIBRE: 5756 port_sup = SUPPORTED_FIBRE; 5757 port_adv = ADVERTISED_FIBRE; 5758 break; 5759 default: 5760 port_sup = SUPPORTED_TP; 5761 port_adv = ADVERTISED_TP; 5762 WARN_ON_ONCE(1); 5763 } 5764 5765 /* "Fallthrough" case'es ordered from high to low result in setting */ 5766 /* flags cumulatively, starting from the specified speed and down to */ 5767 /* the lowest possible. */ 5768 spd_sup = 0; 5769 spd_adv = 0; 5770 switch (maxspeed) { 5771 case SPEED_10000: 5772 spd_sup |= SUPPORTED_10000baseT_Full; 5773 spd_adv |= ADVERTISED_10000baseT_Full; 5774 case SPEED_1000: 5775 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; 5776 spd_adv |= ADVERTISED_1000baseT_Half | 5777 ADVERTISED_1000baseT_Full; 5778 case SPEED_100: 5779 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; 5780 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; 5781 case SPEED_10: 5782 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 5783 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; 5784 break; 5785 default: 5786 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 5787 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; 5788 WARN_ON_ONCE(1); 5789 } 5790 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv; 5791 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup; 5792 } 5793 5794 int qeth_core_ethtool_get_settings(struct net_device *netdev, 5795 struct ethtool_cmd *ecmd) 5796 { 5797 struct qeth_card *card = netdev->ml_priv; 5798 enum qeth_link_types link_type; 5799 struct carrier_info carrier_info; 5800 int rc; 5801 u32 speed; 5802 5803 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 5804 link_type = QETH_LINK_TYPE_10GBIT_ETH; 5805 else 5806 link_type = card->info.link_type; 5807 5808 ecmd->transceiver = XCVR_INTERNAL; 5809 ecmd->duplex = DUPLEX_FULL; 5810 ecmd->autoneg = AUTONEG_ENABLE; 5811 5812 switch (link_type) { 5813 case QETH_LINK_TYPE_FAST_ETH: 5814 case QETH_LINK_TYPE_LANE_ETH100: 5815 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP); 5816 speed = SPEED_100; 5817 ecmd->port = PORT_TP; 5818 break; 5819 5820 case QETH_LINK_TYPE_GBIT_ETH: 5821 case QETH_LINK_TYPE_LANE_ETH1000: 5822 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE); 5823 speed = SPEED_1000; 5824 ecmd->port = PORT_FIBRE; 5825 break; 5826 5827 case QETH_LINK_TYPE_10GBIT_ETH: 5828 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE); 5829 speed = SPEED_10000; 5830 ecmd->port = PORT_FIBRE; 5831 break; 5832 5833 default: 5834 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP); 5835 speed = SPEED_10; 5836 ecmd->port = PORT_TP; 5837 } 5838 ethtool_cmd_speed_set(ecmd, speed); 5839 5840 /* Check if we can obtain more accurate information. */ 5841 /* If QUERY_CARD_INFO command is not supported or fails, */ 5842 /* just return the heuristics that was filled above. */ 5843 if (!qeth_card_hw_is_reachable(card)) 5844 return -ENODEV; 5845 rc = qeth_query_card_info(card, &carrier_info); 5846 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 5847 return 0; 5848 if (rc) /* report error from the hardware operation */ 5849 return rc; 5850 /* on success, fill in the information got from the hardware */ 5851 5852 netdev_dbg(netdev, 5853 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 5854 carrier_info.card_type, 5855 carrier_info.port_mode, 5856 carrier_info.port_speed); 5857 5858 /* Update attributes for which we've obtained more authoritative */ 5859 /* information, leave the rest the way they where filled above. */ 5860 switch (carrier_info.card_type) { 5861 case CARD_INFO_TYPE_1G_COPPER_A: 5862 case CARD_INFO_TYPE_1G_COPPER_B: 5863 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP); 5864 ecmd->port = PORT_TP; 5865 break; 5866 case CARD_INFO_TYPE_1G_FIBRE_A: 5867 case CARD_INFO_TYPE_1G_FIBRE_B: 5868 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE); 5869 ecmd->port = PORT_FIBRE; 5870 break; 5871 case CARD_INFO_TYPE_10G_FIBRE_A: 5872 case CARD_INFO_TYPE_10G_FIBRE_B: 5873 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE); 5874 ecmd->port = PORT_FIBRE; 5875 break; 5876 } 5877 5878 switch (carrier_info.port_mode) { 5879 case CARD_INFO_PORTM_FULLDUPLEX: 5880 ecmd->duplex = DUPLEX_FULL; 5881 break; 5882 case CARD_INFO_PORTM_HALFDUPLEX: 5883 ecmd->duplex = DUPLEX_HALF; 5884 break; 5885 } 5886 5887 switch (carrier_info.port_speed) { 5888 case CARD_INFO_PORTS_10M: 5889 speed = SPEED_10; 5890 break; 5891 case CARD_INFO_PORTS_100M: 5892 speed = SPEED_100; 5893 break; 5894 case CARD_INFO_PORTS_1G: 5895 speed = SPEED_1000; 5896 break; 5897 case CARD_INFO_PORTS_10G: 5898 speed = SPEED_10000; 5899 break; 5900 } 5901 ethtool_cmd_speed_set(ecmd, speed); 5902 5903 return 0; 5904 } 5905 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings); 5906 5907 static int __init qeth_core_init(void) 5908 { 5909 int rc; 5910 5911 pr_info("loading core functions\n"); 5912 INIT_LIST_HEAD(&qeth_core_card_list.list); 5913 INIT_LIST_HEAD(&qeth_dbf_list); 5914 rwlock_init(&qeth_core_card_list.rwlock); 5915 mutex_init(&qeth_mod_mutex); 5916 5917 qeth_wq = create_singlethread_workqueue("qeth_wq"); 5918 5919 rc = qeth_register_dbf_views(); 5920 if (rc) 5921 goto out_err; 5922 qeth_core_root_dev = root_device_register("qeth"); 5923 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 5924 if (rc) 5925 goto register_err; 5926 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 5927 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 5928 if (!qeth_core_header_cache) { 5929 rc = -ENOMEM; 5930 goto slab_err; 5931 } 5932 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 5933 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 5934 if (!qeth_qdio_outbuf_cache) { 5935 rc = -ENOMEM; 5936 goto cqslab_err; 5937 } 5938 rc = ccw_driver_register(&qeth_ccw_driver); 5939 if (rc) 5940 goto ccw_err; 5941 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 5942 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 5943 if (rc) 5944 goto ccwgroup_err; 5945 5946 return 0; 5947 5948 ccwgroup_err: 5949 ccw_driver_unregister(&qeth_ccw_driver); 5950 ccw_err: 5951 kmem_cache_destroy(qeth_qdio_outbuf_cache); 5952 cqslab_err: 5953 kmem_cache_destroy(qeth_core_header_cache); 5954 slab_err: 5955 root_device_unregister(qeth_core_root_dev); 5956 register_err: 5957 qeth_unregister_dbf_views(); 5958 out_err: 5959 pr_err("Initializing the qeth device driver failed\n"); 5960 return rc; 5961 } 5962 5963 static void __exit qeth_core_exit(void) 5964 { 5965 qeth_clear_dbf_list(); 5966 destroy_workqueue(qeth_wq); 5967 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 5968 ccw_driver_unregister(&qeth_ccw_driver); 5969 kmem_cache_destroy(qeth_qdio_outbuf_cache); 5970 kmem_cache_destroy(qeth_core_header_cache); 5971 root_device_unregister(qeth_core_root_dev); 5972 qeth_unregister_dbf_views(); 5973 pr_info("core functions removed\n"); 5974 } 5975 5976 module_init(qeth_core_init); 5977 module_exit(qeth_core_exit); 5978 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 5979 MODULE_DESCRIPTION("qeth core functions"); 5980 MODULE_LICENSE("GPL"); 5981