1 /* 2 * Copyright IBM Corp. 2007, 2009 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 4 * Frank Pavlic <fpavlic@de.ibm.com>, 5 * Thomas Spatzier <tspat@de.ibm.com>, 6 * Frank Blaschka <frank.blaschka@de.ibm.com> 7 */ 8 9 #define KMSG_COMPONENT "qeth" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/string.h> 15 #include <linux/errno.h> 16 #include <linux/kernel.h> 17 #include <linux/ip.h> 18 #include <linux/tcp.h> 19 #include <linux/mii.h> 20 #include <linux/kthread.h> 21 #include <linux/slab.h> 22 #include <net/iucv/af_iucv.h> 23 #include <net/dsfield.h> 24 25 #include <asm/ebcdic.h> 26 #include <asm/chpid.h> 27 #include <asm/io.h> 28 #include <asm/sysinfo.h> 29 #include <asm/compat.h> 30 31 #include "qeth_core.h" 32 33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 34 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 35 /* N P A M L V H */ 36 [QETH_DBF_SETUP] = {"qeth_setup", 37 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 38 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 39 &debug_sprintf_view, NULL}, 40 [QETH_DBF_CTRL] = {"qeth_control", 41 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 42 }; 43 EXPORT_SYMBOL_GPL(qeth_dbf); 44 45 struct qeth_card_list_struct qeth_core_card_list; 46 EXPORT_SYMBOL_GPL(qeth_core_card_list); 47 struct kmem_cache *qeth_core_header_cache; 48 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 49 static struct kmem_cache *qeth_qdio_outbuf_cache; 50 51 static struct device *qeth_core_root_dev; 52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY; 53 static struct lock_class_key qdio_out_skb_queue_key; 54 static struct mutex qeth_mod_mutex; 55 56 static void qeth_send_control_data_cb(struct qeth_channel *, 57 struct qeth_cmd_buffer *); 58 static int qeth_issue_next_read(struct qeth_card *); 59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 61 static void qeth_free_buffer_pool(struct qeth_card *); 62 static int qeth_qdio_establish(struct qeth_card *); 63 static void qeth_free_qdio_buffers(struct qeth_card *); 64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 65 struct qeth_qdio_out_buffer *buf, 66 enum iucv_tx_notify notification); 67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 69 struct qeth_qdio_out_buffer *buf, 70 enum qeth_qdio_buffer_states newbufstate); 71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 72 73 struct workqueue_struct *qeth_wq; 74 EXPORT_SYMBOL_GPL(qeth_wq); 75 76 int qeth_card_hw_is_reachable(struct qeth_card *card) 77 { 78 return (card->state == CARD_STATE_SOFTSETUP) || 79 (card->state == CARD_STATE_UP); 80 } 81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 82 83 static void qeth_close_dev_handler(struct work_struct *work) 84 { 85 struct qeth_card *card; 86 87 card = container_of(work, struct qeth_card, close_dev_work); 88 QETH_CARD_TEXT(card, 2, "cldevhdl"); 89 rtnl_lock(); 90 dev_close(card->dev); 91 rtnl_unlock(); 92 ccwgroup_set_offline(card->gdev); 93 } 94 95 void qeth_close_dev(struct qeth_card *card) 96 { 97 QETH_CARD_TEXT(card, 2, "cldevsubm"); 98 queue_work(qeth_wq, &card->close_dev_work); 99 } 100 EXPORT_SYMBOL_GPL(qeth_close_dev); 101 102 static inline const char *qeth_get_cardname(struct qeth_card *card) 103 { 104 if (card->info.guestlan) { 105 switch (card->info.type) { 106 case QETH_CARD_TYPE_OSD: 107 return " Virtual NIC QDIO"; 108 case QETH_CARD_TYPE_IQD: 109 return " Virtual NIC Hiper"; 110 case QETH_CARD_TYPE_OSM: 111 return " Virtual NIC QDIO - OSM"; 112 case QETH_CARD_TYPE_OSX: 113 return " Virtual NIC QDIO - OSX"; 114 default: 115 return " unknown"; 116 } 117 } else { 118 switch (card->info.type) { 119 case QETH_CARD_TYPE_OSD: 120 return " OSD Express"; 121 case QETH_CARD_TYPE_IQD: 122 return " HiperSockets"; 123 case QETH_CARD_TYPE_OSN: 124 return " OSN QDIO"; 125 case QETH_CARD_TYPE_OSM: 126 return " OSM QDIO"; 127 case QETH_CARD_TYPE_OSX: 128 return " OSX QDIO"; 129 default: 130 return " unknown"; 131 } 132 } 133 return " n/a"; 134 } 135 136 /* max length to be returned: 14 */ 137 const char *qeth_get_cardname_short(struct qeth_card *card) 138 { 139 if (card->info.guestlan) { 140 switch (card->info.type) { 141 case QETH_CARD_TYPE_OSD: 142 return "Virt.NIC QDIO"; 143 case QETH_CARD_TYPE_IQD: 144 return "Virt.NIC Hiper"; 145 case QETH_CARD_TYPE_OSM: 146 return "Virt.NIC OSM"; 147 case QETH_CARD_TYPE_OSX: 148 return "Virt.NIC OSX"; 149 default: 150 return "unknown"; 151 } 152 } else { 153 switch (card->info.type) { 154 case QETH_CARD_TYPE_OSD: 155 switch (card->info.link_type) { 156 case QETH_LINK_TYPE_FAST_ETH: 157 return "OSD_100"; 158 case QETH_LINK_TYPE_HSTR: 159 return "HSTR"; 160 case QETH_LINK_TYPE_GBIT_ETH: 161 return "OSD_1000"; 162 case QETH_LINK_TYPE_10GBIT_ETH: 163 return "OSD_10GIG"; 164 case QETH_LINK_TYPE_LANE_ETH100: 165 return "OSD_FE_LANE"; 166 case QETH_LINK_TYPE_LANE_TR: 167 return "OSD_TR_LANE"; 168 case QETH_LINK_TYPE_LANE_ETH1000: 169 return "OSD_GbE_LANE"; 170 case QETH_LINK_TYPE_LANE: 171 return "OSD_ATM_LANE"; 172 default: 173 return "OSD_Express"; 174 } 175 case QETH_CARD_TYPE_IQD: 176 return "HiperSockets"; 177 case QETH_CARD_TYPE_OSN: 178 return "OSN"; 179 case QETH_CARD_TYPE_OSM: 180 return "OSM_1000"; 181 case QETH_CARD_TYPE_OSX: 182 return "OSX_10GIG"; 183 default: 184 return "unknown"; 185 } 186 } 187 return "n/a"; 188 } 189 190 void qeth_set_recovery_task(struct qeth_card *card) 191 { 192 card->recovery_task = current; 193 } 194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 195 196 void qeth_clear_recovery_task(struct qeth_card *card) 197 { 198 card->recovery_task = NULL; 199 } 200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 201 202 static bool qeth_is_recovery_task(const struct qeth_card *card) 203 { 204 return card->recovery_task == current; 205 } 206 207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 208 int clear_start_mask) 209 { 210 unsigned long flags; 211 212 spin_lock_irqsave(&card->thread_mask_lock, flags); 213 card->thread_allowed_mask = threads; 214 if (clear_start_mask) 215 card->thread_start_mask &= threads; 216 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 217 wake_up(&card->wait_q); 218 } 219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 220 221 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 222 { 223 unsigned long flags; 224 int rc = 0; 225 226 spin_lock_irqsave(&card->thread_mask_lock, flags); 227 rc = (card->thread_running_mask & threads); 228 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 229 return rc; 230 } 231 EXPORT_SYMBOL_GPL(qeth_threads_running); 232 233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 234 { 235 if (qeth_is_recovery_task(card)) 236 return 0; 237 return wait_event_interruptible(card->wait_q, 238 qeth_threads_running(card, threads) == 0); 239 } 240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 241 242 void qeth_clear_working_pool_list(struct qeth_card *card) 243 { 244 struct qeth_buffer_pool_entry *pool_entry, *tmp; 245 246 QETH_CARD_TEXT(card, 5, "clwrklst"); 247 list_for_each_entry_safe(pool_entry, tmp, 248 &card->qdio.in_buf_pool.entry_list, list){ 249 list_del(&pool_entry->list); 250 } 251 } 252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 253 254 static int qeth_alloc_buffer_pool(struct qeth_card *card) 255 { 256 struct qeth_buffer_pool_entry *pool_entry; 257 void *ptr; 258 int i, j; 259 260 QETH_CARD_TEXT(card, 5, "alocpool"); 261 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 262 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 263 if (!pool_entry) { 264 qeth_free_buffer_pool(card); 265 return -ENOMEM; 266 } 267 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 268 ptr = (void *) __get_free_page(GFP_KERNEL); 269 if (!ptr) { 270 while (j > 0) 271 free_page((unsigned long) 272 pool_entry->elements[--j]); 273 kfree(pool_entry); 274 qeth_free_buffer_pool(card); 275 return -ENOMEM; 276 } 277 pool_entry->elements[j] = ptr; 278 } 279 list_add(&pool_entry->init_list, 280 &card->qdio.init_pool.entry_list); 281 } 282 return 0; 283 } 284 285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 286 { 287 QETH_CARD_TEXT(card, 2, "realcbp"); 288 289 if ((card->state != CARD_STATE_DOWN) && 290 (card->state != CARD_STATE_RECOVER)) 291 return -EPERM; 292 293 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 294 qeth_clear_working_pool_list(card); 295 qeth_free_buffer_pool(card); 296 card->qdio.in_buf_pool.buf_count = bufcnt; 297 card->qdio.init_pool.buf_count = bufcnt; 298 return qeth_alloc_buffer_pool(card); 299 } 300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 301 302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 303 { 304 if (!q) 305 return; 306 307 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 308 kfree(q); 309 } 310 311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 312 { 313 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 314 int i; 315 316 if (!q) 317 return NULL; 318 319 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 320 kfree(q); 321 return NULL; 322 } 323 324 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 325 q->bufs[i].buffer = q->qdio_bufs[i]; 326 327 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 328 return q; 329 } 330 331 static inline int qeth_cq_init(struct qeth_card *card) 332 { 333 int rc; 334 335 if (card->options.cq == QETH_CQ_ENABLED) { 336 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 337 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 338 QDIO_MAX_BUFFERS_PER_Q); 339 card->qdio.c_q->next_buf_to_init = 127; 340 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 341 card->qdio.no_in_queues - 1, 0, 342 127); 343 if (rc) { 344 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 345 goto out; 346 } 347 } 348 rc = 0; 349 out: 350 return rc; 351 } 352 353 static inline int qeth_alloc_cq(struct qeth_card *card) 354 { 355 int rc; 356 357 if (card->options.cq == QETH_CQ_ENABLED) { 358 int i; 359 struct qdio_outbuf_state *outbuf_states; 360 361 QETH_DBF_TEXT(SETUP, 2, "cqon"); 362 card->qdio.c_q = qeth_alloc_qdio_queue(); 363 if (!card->qdio.c_q) { 364 rc = -1; 365 goto kmsg_out; 366 } 367 card->qdio.no_in_queues = 2; 368 card->qdio.out_bufstates = 369 kzalloc(card->qdio.no_out_queues * 370 QDIO_MAX_BUFFERS_PER_Q * 371 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 372 outbuf_states = card->qdio.out_bufstates; 373 if (outbuf_states == NULL) { 374 rc = -1; 375 goto free_cq_out; 376 } 377 for (i = 0; i < card->qdio.no_out_queues; ++i) { 378 card->qdio.out_qs[i]->bufstates = outbuf_states; 379 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 380 } 381 } else { 382 QETH_DBF_TEXT(SETUP, 2, "nocq"); 383 card->qdio.c_q = NULL; 384 card->qdio.no_in_queues = 1; 385 } 386 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 387 rc = 0; 388 out: 389 return rc; 390 free_cq_out: 391 qeth_free_qdio_queue(card->qdio.c_q); 392 card->qdio.c_q = NULL; 393 kmsg_out: 394 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 395 goto out; 396 } 397 398 static inline void qeth_free_cq(struct qeth_card *card) 399 { 400 if (card->qdio.c_q) { 401 --card->qdio.no_in_queues; 402 qeth_free_qdio_queue(card->qdio.c_q); 403 card->qdio.c_q = NULL; 404 } 405 kfree(card->qdio.out_bufstates); 406 card->qdio.out_bufstates = NULL; 407 } 408 409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 410 int delayed) { 411 enum iucv_tx_notify n; 412 413 switch (sbalf15) { 414 case 0: 415 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 416 break; 417 case 4: 418 case 16: 419 case 17: 420 case 18: 421 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 422 TX_NOTIFY_UNREACHABLE; 423 break; 424 default: 425 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 426 TX_NOTIFY_GENERALERROR; 427 break; 428 } 429 430 return n; 431 } 432 433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, 434 int bidx, int forced_cleanup) 435 { 436 if (q->card->options.cq != QETH_CQ_ENABLED) 437 return; 438 439 if (q->bufs[bidx]->next_pending != NULL) { 440 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 441 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 442 443 while (c) { 444 if (forced_cleanup || 445 atomic_read(&c->state) == 446 QETH_QDIO_BUF_HANDLED_DELAYED) { 447 struct qeth_qdio_out_buffer *f = c; 448 QETH_CARD_TEXT(f->q->card, 5, "fp"); 449 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 450 /* release here to avoid interleaving between 451 outbound tasklet and inbound tasklet 452 regarding notifications and lifecycle */ 453 qeth_release_skbs(c); 454 455 c = f->next_pending; 456 WARN_ON_ONCE(head->next_pending != f); 457 head->next_pending = c; 458 kmem_cache_free(qeth_qdio_outbuf_cache, f); 459 } else { 460 head = c; 461 c = c->next_pending; 462 } 463 464 } 465 } 466 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 467 QETH_QDIO_BUF_HANDLED_DELAYED)) { 468 /* for recovery situations */ 469 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 470 qeth_init_qdio_out_buf(q, bidx); 471 QETH_CARD_TEXT(q->card, 2, "clprecov"); 472 } 473 } 474 475 476 static inline void qeth_qdio_handle_aob(struct qeth_card *card, 477 unsigned long phys_aob_addr) { 478 struct qaob *aob; 479 struct qeth_qdio_out_buffer *buffer; 480 enum iucv_tx_notify notification; 481 482 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 483 QETH_CARD_TEXT(card, 5, "haob"); 484 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 485 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 486 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 487 488 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 489 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 490 notification = TX_NOTIFY_OK; 491 } else { 492 WARN_ON_ONCE(atomic_read(&buffer->state) != 493 QETH_QDIO_BUF_PENDING); 494 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 495 notification = TX_NOTIFY_DELAYED_OK; 496 } 497 498 if (aob->aorc != 0) { 499 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 500 notification = qeth_compute_cq_notification(aob->aorc, 1); 501 } 502 qeth_notify_skbs(buffer->q, buffer, notification); 503 504 buffer->aob = NULL; 505 qeth_clear_output_buffer(buffer->q, buffer, 506 QETH_QDIO_BUF_HANDLED_DELAYED); 507 508 /* from here on: do not touch buffer anymore */ 509 qdio_release_aob(aob); 510 } 511 512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 513 { 514 return card->options.cq == QETH_CQ_ENABLED && 515 card->qdio.c_q != NULL && 516 queue != 0 && 517 queue == card->qdio.no_in_queues - 1; 518 } 519 520 521 static int qeth_issue_next_read(struct qeth_card *card) 522 { 523 int rc; 524 struct qeth_cmd_buffer *iob; 525 526 QETH_CARD_TEXT(card, 5, "issnxrd"); 527 if (card->read.state != CH_STATE_UP) 528 return -EIO; 529 iob = qeth_get_buffer(&card->read); 530 if (!iob) { 531 dev_warn(&card->gdev->dev, "The qeth device driver " 532 "failed to recover an error on the device\n"); 533 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 534 "available\n", dev_name(&card->gdev->dev)); 535 return -ENOMEM; 536 } 537 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 538 QETH_CARD_TEXT(card, 6, "noirqpnd"); 539 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 540 (addr_t) iob, 0, 0); 541 if (rc) { 542 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 543 "rc=%i\n", dev_name(&card->gdev->dev), rc); 544 atomic_set(&card->read.irq_pending, 0); 545 card->read_or_write_problem = 1; 546 qeth_schedule_recovery(card); 547 wake_up(&card->wait_q); 548 } 549 return rc; 550 } 551 552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 553 { 554 struct qeth_reply *reply; 555 556 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 557 if (reply) { 558 atomic_set(&reply->refcnt, 1); 559 atomic_set(&reply->received, 0); 560 reply->card = card; 561 } 562 return reply; 563 } 564 565 static void qeth_get_reply(struct qeth_reply *reply) 566 { 567 WARN_ON(atomic_read(&reply->refcnt) <= 0); 568 atomic_inc(&reply->refcnt); 569 } 570 571 static void qeth_put_reply(struct qeth_reply *reply) 572 { 573 WARN_ON(atomic_read(&reply->refcnt) <= 0); 574 if (atomic_dec_and_test(&reply->refcnt)) 575 kfree(reply); 576 } 577 578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 579 struct qeth_card *card) 580 { 581 char *ipa_name; 582 int com = cmd->hdr.command; 583 ipa_name = qeth_get_ipa_cmd_name(com); 584 if (rc) 585 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 586 "x%X \"%s\"\n", 587 ipa_name, com, dev_name(&card->gdev->dev), 588 QETH_CARD_IFNAME(card), rc, 589 qeth_get_ipa_msg(rc)); 590 else 591 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 592 ipa_name, com, dev_name(&card->gdev->dev), 593 QETH_CARD_IFNAME(card)); 594 } 595 596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 597 struct qeth_cmd_buffer *iob) 598 { 599 struct qeth_ipa_cmd *cmd = NULL; 600 601 QETH_CARD_TEXT(card, 5, "chkipad"); 602 if (IS_IPA(iob->data)) { 603 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 604 if (IS_IPA_REPLY(cmd)) { 605 if (cmd->hdr.command != IPA_CMD_SETCCID && 606 cmd->hdr.command != IPA_CMD_DELCCID && 607 cmd->hdr.command != IPA_CMD_MODCCID && 608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 609 qeth_issue_ipa_msg(cmd, 610 cmd->hdr.return_code, card); 611 return cmd; 612 } else { 613 switch (cmd->hdr.command) { 614 case IPA_CMD_STOPLAN: 615 if (cmd->hdr.return_code == 616 IPA_RC_VEPA_TO_VEB_TRANSITION) { 617 dev_err(&card->gdev->dev, 618 "Interface %s is down because the " 619 "adjacent port is no longer in " 620 "reflective relay mode\n", 621 QETH_CARD_IFNAME(card)); 622 qeth_close_dev(card); 623 } else { 624 dev_warn(&card->gdev->dev, 625 "The link for interface %s on CHPID" 626 " 0x%X failed\n", 627 QETH_CARD_IFNAME(card), 628 card->info.chpid); 629 qeth_issue_ipa_msg(cmd, 630 cmd->hdr.return_code, card); 631 } 632 card->lan_online = 0; 633 if (card->dev && netif_carrier_ok(card->dev)) 634 netif_carrier_off(card->dev); 635 return NULL; 636 case IPA_CMD_STARTLAN: 637 dev_info(&card->gdev->dev, 638 "The link for %s on CHPID 0x%X has" 639 " been restored\n", 640 QETH_CARD_IFNAME(card), 641 card->info.chpid); 642 netif_carrier_on(card->dev); 643 card->lan_online = 1; 644 if (card->info.hwtrap) 645 card->info.hwtrap = 2; 646 qeth_schedule_recovery(card); 647 return NULL; 648 case IPA_CMD_SETBRIDGEPORT_IQD: 649 case IPA_CMD_SETBRIDGEPORT_OSA: 650 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 651 if (card->discipline->control_event_handler 652 (card, cmd)) 653 return cmd; 654 else 655 return NULL; 656 case IPA_CMD_MODCCID: 657 return cmd; 658 case IPA_CMD_REGISTER_LOCAL_ADDR: 659 QETH_CARD_TEXT(card, 3, "irla"); 660 break; 661 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 662 QETH_CARD_TEXT(card, 3, "urla"); 663 break; 664 default: 665 QETH_DBF_MESSAGE(2, "Received data is IPA " 666 "but not a reply!\n"); 667 break; 668 } 669 } 670 } 671 return cmd; 672 } 673 674 void qeth_clear_ipacmd_list(struct qeth_card *card) 675 { 676 struct qeth_reply *reply, *r; 677 unsigned long flags; 678 679 QETH_CARD_TEXT(card, 4, "clipalst"); 680 681 spin_lock_irqsave(&card->lock, flags); 682 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 683 qeth_get_reply(reply); 684 reply->rc = -EIO; 685 atomic_inc(&reply->received); 686 list_del_init(&reply->list); 687 wake_up(&reply->wait_q); 688 qeth_put_reply(reply); 689 } 690 spin_unlock_irqrestore(&card->lock, flags); 691 atomic_set(&card->write.irq_pending, 0); 692 } 693 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 694 695 static int qeth_check_idx_response(struct qeth_card *card, 696 unsigned char *buffer) 697 { 698 if (!buffer) 699 return 0; 700 701 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 702 if ((buffer[2] & 0xc0) == 0xc0) { 703 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 704 "with cause code 0x%02x%s\n", 705 buffer[4], 706 ((buffer[4] == 0x22) ? 707 " -- try another portname" : "")); 708 QETH_CARD_TEXT(card, 2, "ckidxres"); 709 QETH_CARD_TEXT(card, 2, " idxterm"); 710 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 711 if (buffer[4] == 0xf6) { 712 dev_err(&card->gdev->dev, 713 "The qeth device is not configured " 714 "for the OSI layer required by z/VM\n"); 715 return -EPERM; 716 } 717 return -EIO; 718 } 719 return 0; 720 } 721 722 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 723 { 724 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 725 dev_get_drvdata(&cdev->dev))->dev); 726 return card; 727 } 728 729 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 730 __u32 len) 731 { 732 struct qeth_card *card; 733 734 card = CARD_FROM_CDEV(channel->ccwdev); 735 QETH_CARD_TEXT(card, 4, "setupccw"); 736 if (channel == &card->read) 737 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 738 else 739 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 740 channel->ccw.count = len; 741 channel->ccw.cda = (__u32) __pa(iob); 742 } 743 744 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 745 { 746 __u8 index; 747 748 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 749 index = channel->io_buf_no; 750 do { 751 if (channel->iob[index].state == BUF_STATE_FREE) { 752 channel->iob[index].state = BUF_STATE_LOCKED; 753 channel->io_buf_no = (channel->io_buf_no + 1) % 754 QETH_CMD_BUFFER_NO; 755 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 756 return channel->iob + index; 757 } 758 index = (index + 1) % QETH_CMD_BUFFER_NO; 759 } while (index != channel->io_buf_no); 760 761 return NULL; 762 } 763 764 void qeth_release_buffer(struct qeth_channel *channel, 765 struct qeth_cmd_buffer *iob) 766 { 767 unsigned long flags; 768 769 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 770 spin_lock_irqsave(&channel->iob_lock, flags); 771 memset(iob->data, 0, QETH_BUFSIZE); 772 iob->state = BUF_STATE_FREE; 773 iob->callback = qeth_send_control_data_cb; 774 iob->rc = 0; 775 spin_unlock_irqrestore(&channel->iob_lock, flags); 776 wake_up(&channel->wait_q); 777 } 778 EXPORT_SYMBOL_GPL(qeth_release_buffer); 779 780 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 781 { 782 struct qeth_cmd_buffer *buffer = NULL; 783 unsigned long flags; 784 785 spin_lock_irqsave(&channel->iob_lock, flags); 786 buffer = __qeth_get_buffer(channel); 787 spin_unlock_irqrestore(&channel->iob_lock, flags); 788 return buffer; 789 } 790 791 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 792 { 793 struct qeth_cmd_buffer *buffer; 794 wait_event(channel->wait_q, 795 ((buffer = qeth_get_buffer(channel)) != NULL)); 796 return buffer; 797 } 798 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 799 800 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 801 { 802 int cnt; 803 804 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 805 qeth_release_buffer(channel, &channel->iob[cnt]); 806 channel->buf_no = 0; 807 channel->io_buf_no = 0; 808 } 809 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 810 811 static void qeth_send_control_data_cb(struct qeth_channel *channel, 812 struct qeth_cmd_buffer *iob) 813 { 814 struct qeth_card *card; 815 struct qeth_reply *reply, *r; 816 struct qeth_ipa_cmd *cmd; 817 unsigned long flags; 818 int keep_reply; 819 int rc = 0; 820 821 card = CARD_FROM_CDEV(channel->ccwdev); 822 QETH_CARD_TEXT(card, 4, "sndctlcb"); 823 rc = qeth_check_idx_response(card, iob->data); 824 switch (rc) { 825 case 0: 826 break; 827 case -EIO: 828 qeth_clear_ipacmd_list(card); 829 qeth_schedule_recovery(card); 830 /* fall through */ 831 default: 832 goto out; 833 } 834 835 cmd = qeth_check_ipa_data(card, iob); 836 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 837 goto out; 838 /*in case of OSN : check if cmd is set */ 839 if (card->info.type == QETH_CARD_TYPE_OSN && 840 cmd && 841 cmd->hdr.command != IPA_CMD_STARTLAN && 842 card->osn_info.assist_cb != NULL) { 843 card->osn_info.assist_cb(card->dev, cmd); 844 goto out; 845 } 846 847 spin_lock_irqsave(&card->lock, flags); 848 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 849 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 850 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 851 qeth_get_reply(reply); 852 list_del_init(&reply->list); 853 spin_unlock_irqrestore(&card->lock, flags); 854 keep_reply = 0; 855 if (reply->callback != NULL) { 856 if (cmd) { 857 reply->offset = (__u16)((char *)cmd - 858 (char *)iob->data); 859 keep_reply = reply->callback(card, 860 reply, 861 (unsigned long)cmd); 862 } else 863 keep_reply = reply->callback(card, 864 reply, 865 (unsigned long)iob); 866 } 867 if (cmd) 868 reply->rc = (u16) cmd->hdr.return_code; 869 else if (iob->rc) 870 reply->rc = iob->rc; 871 if (keep_reply) { 872 spin_lock_irqsave(&card->lock, flags); 873 list_add_tail(&reply->list, 874 &card->cmd_waiter_list); 875 spin_unlock_irqrestore(&card->lock, flags); 876 } else { 877 atomic_inc(&reply->received); 878 wake_up(&reply->wait_q); 879 } 880 qeth_put_reply(reply); 881 goto out; 882 } 883 } 884 spin_unlock_irqrestore(&card->lock, flags); 885 out: 886 memcpy(&card->seqno.pdu_hdr_ack, 887 QETH_PDU_HEADER_SEQ_NO(iob->data), 888 QETH_SEQ_NO_LENGTH); 889 qeth_release_buffer(channel, iob); 890 } 891 892 static int qeth_setup_channel(struct qeth_channel *channel) 893 { 894 int cnt; 895 896 QETH_DBF_TEXT(SETUP, 2, "setupch"); 897 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 898 channel->iob[cnt].data = 899 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 900 if (channel->iob[cnt].data == NULL) 901 break; 902 channel->iob[cnt].state = BUF_STATE_FREE; 903 channel->iob[cnt].channel = channel; 904 channel->iob[cnt].callback = qeth_send_control_data_cb; 905 channel->iob[cnt].rc = 0; 906 } 907 if (cnt < QETH_CMD_BUFFER_NO) { 908 while (cnt-- > 0) 909 kfree(channel->iob[cnt].data); 910 return -ENOMEM; 911 } 912 channel->buf_no = 0; 913 channel->io_buf_no = 0; 914 atomic_set(&channel->irq_pending, 0); 915 spin_lock_init(&channel->iob_lock); 916 917 init_waitqueue_head(&channel->wait_q); 918 return 0; 919 } 920 921 static int qeth_set_thread_start_bit(struct qeth_card *card, 922 unsigned long thread) 923 { 924 unsigned long flags; 925 926 spin_lock_irqsave(&card->thread_mask_lock, flags); 927 if (!(card->thread_allowed_mask & thread) || 928 (card->thread_start_mask & thread)) { 929 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 930 return -EPERM; 931 } 932 card->thread_start_mask |= thread; 933 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 934 return 0; 935 } 936 937 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 938 { 939 unsigned long flags; 940 941 spin_lock_irqsave(&card->thread_mask_lock, flags); 942 card->thread_start_mask &= ~thread; 943 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 944 wake_up(&card->wait_q); 945 } 946 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 947 948 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 949 { 950 unsigned long flags; 951 952 spin_lock_irqsave(&card->thread_mask_lock, flags); 953 card->thread_running_mask &= ~thread; 954 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 955 wake_up(&card->wait_q); 956 } 957 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 958 959 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 960 { 961 unsigned long flags; 962 int rc = 0; 963 964 spin_lock_irqsave(&card->thread_mask_lock, flags); 965 if (card->thread_start_mask & thread) { 966 if ((card->thread_allowed_mask & thread) && 967 !(card->thread_running_mask & thread)) { 968 rc = 1; 969 card->thread_start_mask &= ~thread; 970 card->thread_running_mask |= thread; 971 } else 972 rc = -EPERM; 973 } 974 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 975 return rc; 976 } 977 978 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 979 { 980 int rc = 0; 981 982 wait_event(card->wait_q, 983 (rc = __qeth_do_run_thread(card, thread)) >= 0); 984 return rc; 985 } 986 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 987 988 void qeth_schedule_recovery(struct qeth_card *card) 989 { 990 QETH_CARD_TEXT(card, 2, "startrec"); 991 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 992 schedule_work(&card->kernel_thread_starter); 993 } 994 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 995 996 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 997 { 998 int dstat, cstat; 999 char *sense; 1000 struct qeth_card *card; 1001 1002 sense = (char *) irb->ecw; 1003 cstat = irb->scsw.cmd.cstat; 1004 dstat = irb->scsw.cmd.dstat; 1005 card = CARD_FROM_CDEV(cdev); 1006 1007 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1008 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1009 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1010 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1011 dev_warn(&cdev->dev, "The qeth device driver " 1012 "failed to recover an error on the device\n"); 1013 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1014 dev_name(&cdev->dev), dstat, cstat); 1015 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1016 16, 1, irb, 64, 1); 1017 return 1; 1018 } 1019 1020 if (dstat & DEV_STAT_UNIT_CHECK) { 1021 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1022 SENSE_RESETTING_EVENT_FLAG) { 1023 QETH_CARD_TEXT(card, 2, "REVIND"); 1024 return 1; 1025 } 1026 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1027 SENSE_COMMAND_REJECT_FLAG) { 1028 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1029 return 1; 1030 } 1031 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1032 QETH_CARD_TEXT(card, 2, "AFFE"); 1033 return 1; 1034 } 1035 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1036 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1037 return 0; 1038 } 1039 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1040 return 1; 1041 } 1042 return 0; 1043 } 1044 1045 static long __qeth_check_irb_error(struct ccw_device *cdev, 1046 unsigned long intparm, struct irb *irb) 1047 { 1048 struct qeth_card *card; 1049 1050 card = CARD_FROM_CDEV(cdev); 1051 1052 if (!card || !IS_ERR(irb)) 1053 return 0; 1054 1055 switch (PTR_ERR(irb)) { 1056 case -EIO: 1057 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1058 dev_name(&cdev->dev)); 1059 QETH_CARD_TEXT(card, 2, "ckirberr"); 1060 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1061 break; 1062 case -ETIMEDOUT: 1063 dev_warn(&cdev->dev, "A hardware operation timed out" 1064 " on the device\n"); 1065 QETH_CARD_TEXT(card, 2, "ckirberr"); 1066 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1067 if (intparm == QETH_RCD_PARM) { 1068 if (card->data.ccwdev == cdev) { 1069 card->data.state = CH_STATE_DOWN; 1070 wake_up(&card->wait_q); 1071 } 1072 } 1073 break; 1074 default: 1075 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1076 dev_name(&cdev->dev), PTR_ERR(irb)); 1077 QETH_CARD_TEXT(card, 2, "ckirberr"); 1078 QETH_CARD_TEXT(card, 2, " rc???"); 1079 } 1080 return PTR_ERR(irb); 1081 } 1082 1083 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1084 struct irb *irb) 1085 { 1086 int rc; 1087 int cstat, dstat; 1088 struct qeth_cmd_buffer *buffer; 1089 struct qeth_channel *channel; 1090 struct qeth_card *card; 1091 struct qeth_cmd_buffer *iob; 1092 __u8 index; 1093 1094 if (__qeth_check_irb_error(cdev, intparm, irb)) 1095 return; 1096 cstat = irb->scsw.cmd.cstat; 1097 dstat = irb->scsw.cmd.dstat; 1098 1099 card = CARD_FROM_CDEV(cdev); 1100 if (!card) 1101 return; 1102 1103 QETH_CARD_TEXT(card, 5, "irq"); 1104 1105 if (card->read.ccwdev == cdev) { 1106 channel = &card->read; 1107 QETH_CARD_TEXT(card, 5, "read"); 1108 } else if (card->write.ccwdev == cdev) { 1109 channel = &card->write; 1110 QETH_CARD_TEXT(card, 5, "write"); 1111 } else { 1112 channel = &card->data; 1113 QETH_CARD_TEXT(card, 5, "data"); 1114 } 1115 atomic_set(&channel->irq_pending, 0); 1116 1117 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1118 channel->state = CH_STATE_STOPPED; 1119 1120 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1121 channel->state = CH_STATE_HALTED; 1122 1123 /*let's wake up immediately on data channel*/ 1124 if ((channel == &card->data) && (intparm != 0) && 1125 (intparm != QETH_RCD_PARM)) 1126 goto out; 1127 1128 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1129 QETH_CARD_TEXT(card, 6, "clrchpar"); 1130 /* we don't have to handle this further */ 1131 intparm = 0; 1132 } 1133 if (intparm == QETH_HALT_CHANNEL_PARM) { 1134 QETH_CARD_TEXT(card, 6, "hltchpar"); 1135 /* we don't have to handle this further */ 1136 intparm = 0; 1137 } 1138 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1139 (dstat & DEV_STAT_UNIT_CHECK) || 1140 (cstat)) { 1141 if (irb->esw.esw0.erw.cons) { 1142 dev_warn(&channel->ccwdev->dev, 1143 "The qeth device driver failed to recover " 1144 "an error on the device\n"); 1145 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1146 "0x%X dstat 0x%X\n", 1147 dev_name(&channel->ccwdev->dev), cstat, dstat); 1148 print_hex_dump(KERN_WARNING, "qeth: irb ", 1149 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1150 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1151 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1152 } 1153 if (intparm == QETH_RCD_PARM) { 1154 channel->state = CH_STATE_DOWN; 1155 goto out; 1156 } 1157 rc = qeth_get_problem(cdev, irb); 1158 if (rc) { 1159 qeth_clear_ipacmd_list(card); 1160 qeth_schedule_recovery(card); 1161 goto out; 1162 } 1163 } 1164 1165 if (intparm == QETH_RCD_PARM) { 1166 channel->state = CH_STATE_RCD_DONE; 1167 goto out; 1168 } 1169 if (intparm) { 1170 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1171 buffer->state = BUF_STATE_PROCESSED; 1172 } 1173 if (channel == &card->data) 1174 return; 1175 if (channel == &card->read && 1176 channel->state == CH_STATE_UP) 1177 qeth_issue_next_read(card); 1178 1179 iob = channel->iob; 1180 index = channel->buf_no; 1181 while (iob[index].state == BUF_STATE_PROCESSED) { 1182 if (iob[index].callback != NULL) 1183 iob[index].callback(channel, iob + index); 1184 1185 index = (index + 1) % QETH_CMD_BUFFER_NO; 1186 } 1187 channel->buf_no = index; 1188 out: 1189 wake_up(&card->wait_q); 1190 return; 1191 } 1192 1193 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1194 struct qeth_qdio_out_buffer *buf, 1195 enum iucv_tx_notify notification) 1196 { 1197 struct sk_buff *skb; 1198 1199 if (skb_queue_empty(&buf->skb_list)) 1200 goto out; 1201 skb = skb_peek(&buf->skb_list); 1202 while (skb) { 1203 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1204 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1205 if (skb->protocol == ETH_P_AF_IUCV) { 1206 if (skb->sk) { 1207 struct iucv_sock *iucv = iucv_sk(skb->sk); 1208 iucv->sk_txnotify(skb, notification); 1209 } 1210 } 1211 if (skb_queue_is_last(&buf->skb_list, skb)) 1212 skb = NULL; 1213 else 1214 skb = skb_queue_next(&buf->skb_list, skb); 1215 } 1216 out: 1217 return; 1218 } 1219 1220 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1221 { 1222 struct sk_buff *skb; 1223 struct iucv_sock *iucv; 1224 int notify_general_error = 0; 1225 1226 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1227 notify_general_error = 1; 1228 1229 /* release may never happen from within CQ tasklet scope */ 1230 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1231 1232 skb = skb_dequeue(&buf->skb_list); 1233 while (skb) { 1234 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1235 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1236 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) { 1237 if (skb->sk) { 1238 iucv = iucv_sk(skb->sk); 1239 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1240 } 1241 } 1242 atomic_dec(&skb->users); 1243 dev_kfree_skb_any(skb); 1244 skb = skb_dequeue(&buf->skb_list); 1245 } 1246 } 1247 1248 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1249 struct qeth_qdio_out_buffer *buf, 1250 enum qeth_qdio_buffer_states newbufstate) 1251 { 1252 int i; 1253 1254 /* is PCI flag set on buffer? */ 1255 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1256 atomic_dec(&queue->set_pci_flags_count); 1257 1258 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1259 qeth_release_skbs(buf); 1260 } 1261 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1262 if (buf->buffer->element[i].addr && buf->is_header[i]) 1263 kmem_cache_free(qeth_core_header_cache, 1264 buf->buffer->element[i].addr); 1265 buf->is_header[i] = 0; 1266 buf->buffer->element[i].length = 0; 1267 buf->buffer->element[i].addr = NULL; 1268 buf->buffer->element[i].eflags = 0; 1269 buf->buffer->element[i].sflags = 0; 1270 } 1271 buf->buffer->element[15].eflags = 0; 1272 buf->buffer->element[15].sflags = 0; 1273 buf->next_element_to_fill = 0; 1274 atomic_set(&buf->state, newbufstate); 1275 } 1276 1277 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1278 { 1279 int j; 1280 1281 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1282 if (!q->bufs[j]) 1283 continue; 1284 qeth_cleanup_handled_pending(q, j, 1); 1285 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1286 if (free) { 1287 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1288 q->bufs[j] = NULL; 1289 } 1290 } 1291 } 1292 1293 void qeth_clear_qdio_buffers(struct qeth_card *card) 1294 { 1295 int i; 1296 1297 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1298 /* clear outbound buffers to free skbs */ 1299 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1300 if (card->qdio.out_qs[i]) { 1301 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1302 } 1303 } 1304 } 1305 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1306 1307 static void qeth_free_buffer_pool(struct qeth_card *card) 1308 { 1309 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1310 int i = 0; 1311 list_for_each_entry_safe(pool_entry, tmp, 1312 &card->qdio.init_pool.entry_list, init_list){ 1313 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1314 free_page((unsigned long)pool_entry->elements[i]); 1315 list_del(&pool_entry->init_list); 1316 kfree(pool_entry); 1317 } 1318 } 1319 1320 static void qeth_clean_channel(struct qeth_channel *channel) 1321 { 1322 int cnt; 1323 1324 QETH_DBF_TEXT(SETUP, 2, "freech"); 1325 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1326 kfree(channel->iob[cnt].data); 1327 } 1328 1329 static void qeth_set_single_write_queues(struct qeth_card *card) 1330 { 1331 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1332 (card->qdio.no_out_queues == 4)) 1333 qeth_free_qdio_buffers(card); 1334 1335 card->qdio.no_out_queues = 1; 1336 if (card->qdio.default_out_queue != 0) 1337 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1338 1339 card->qdio.default_out_queue = 0; 1340 } 1341 1342 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1343 { 1344 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1345 (card->qdio.no_out_queues == 1)) { 1346 qeth_free_qdio_buffers(card); 1347 card->qdio.default_out_queue = 2; 1348 } 1349 card->qdio.no_out_queues = 4; 1350 } 1351 1352 static void qeth_update_from_chp_desc(struct qeth_card *card) 1353 { 1354 struct ccw_device *ccwdev; 1355 struct channel_path_desc *chp_dsc; 1356 1357 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1358 1359 ccwdev = card->data.ccwdev; 1360 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1361 if (!chp_dsc) 1362 goto out; 1363 1364 card->info.func_level = 0x4100 + chp_dsc->desc; 1365 if (card->info.type == QETH_CARD_TYPE_IQD) 1366 goto out; 1367 1368 /* CHPP field bit 6 == 1 -> single queue */ 1369 if ((chp_dsc->chpp & 0x02) == 0x02) 1370 qeth_set_single_write_queues(card); 1371 else 1372 qeth_set_multiple_write_queues(card); 1373 out: 1374 kfree(chp_dsc); 1375 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1376 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1377 } 1378 1379 static void qeth_init_qdio_info(struct qeth_card *card) 1380 { 1381 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1382 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1383 /* inbound */ 1384 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1385 if (card->info.type == QETH_CARD_TYPE_IQD) 1386 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1387 else 1388 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1389 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1390 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1391 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1392 } 1393 1394 static void qeth_set_intial_options(struct qeth_card *card) 1395 { 1396 card->options.route4.type = NO_ROUTER; 1397 card->options.route6.type = NO_ROUTER; 1398 card->options.fake_broadcast = 0; 1399 card->options.add_hhlen = DEFAULT_ADD_HHLEN; 1400 card->options.performance_stats = 0; 1401 card->options.rx_sg_cb = QETH_RX_SG_CB; 1402 card->options.isolation = ISOLATION_MODE_NONE; 1403 card->options.cq = QETH_CQ_DISABLED; 1404 } 1405 1406 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1407 { 1408 unsigned long flags; 1409 int rc = 0; 1410 1411 spin_lock_irqsave(&card->thread_mask_lock, flags); 1412 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1413 (u8) card->thread_start_mask, 1414 (u8) card->thread_allowed_mask, 1415 (u8) card->thread_running_mask); 1416 rc = (card->thread_start_mask & thread); 1417 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1418 return rc; 1419 } 1420 1421 static void qeth_start_kernel_thread(struct work_struct *work) 1422 { 1423 struct task_struct *ts; 1424 struct qeth_card *card = container_of(work, struct qeth_card, 1425 kernel_thread_starter); 1426 QETH_CARD_TEXT(card , 2, "strthrd"); 1427 1428 if (card->read.state != CH_STATE_UP && 1429 card->write.state != CH_STATE_UP) 1430 return; 1431 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1432 ts = kthread_run(card->discipline->recover, (void *)card, 1433 "qeth_recover"); 1434 if (IS_ERR(ts)) { 1435 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1436 qeth_clear_thread_running_bit(card, 1437 QETH_RECOVER_THREAD); 1438 } 1439 } 1440 } 1441 1442 static void qeth_buffer_reclaim_work(struct work_struct *); 1443 static int qeth_setup_card(struct qeth_card *card) 1444 { 1445 1446 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1447 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1448 1449 card->read.state = CH_STATE_DOWN; 1450 card->write.state = CH_STATE_DOWN; 1451 card->data.state = CH_STATE_DOWN; 1452 card->state = CARD_STATE_DOWN; 1453 card->lan_online = 0; 1454 card->read_or_write_problem = 0; 1455 card->dev = NULL; 1456 spin_lock_init(&card->vlanlock); 1457 spin_lock_init(&card->mclock); 1458 spin_lock_init(&card->lock); 1459 spin_lock_init(&card->ip_lock); 1460 spin_lock_init(&card->thread_mask_lock); 1461 mutex_init(&card->conf_mutex); 1462 mutex_init(&card->discipline_mutex); 1463 card->thread_start_mask = 0; 1464 card->thread_allowed_mask = 0; 1465 card->thread_running_mask = 0; 1466 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1467 INIT_LIST_HEAD(&card->ip_list); 1468 INIT_LIST_HEAD(card->ip_tbd_list); 1469 INIT_LIST_HEAD(&card->cmd_waiter_list); 1470 init_waitqueue_head(&card->wait_q); 1471 /* initial options */ 1472 qeth_set_intial_options(card); 1473 /* IP address takeover */ 1474 INIT_LIST_HEAD(&card->ipato.entries); 1475 card->ipato.enabled = 0; 1476 card->ipato.invert4 = 0; 1477 card->ipato.invert6 = 0; 1478 /* init QDIO stuff */ 1479 qeth_init_qdio_info(card); 1480 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1481 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1482 return 0; 1483 } 1484 1485 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1486 { 1487 struct qeth_card *card = container_of(slr, struct qeth_card, 1488 qeth_service_level); 1489 if (card->info.mcl_level[0]) 1490 seq_printf(m, "qeth: %s firmware level %s\n", 1491 CARD_BUS_ID(card), card->info.mcl_level); 1492 } 1493 1494 static struct qeth_card *qeth_alloc_card(void) 1495 { 1496 struct qeth_card *card; 1497 1498 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1499 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1500 if (!card) 1501 goto out; 1502 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1503 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL); 1504 if (!card->ip_tbd_list) { 1505 QETH_DBF_TEXT(SETUP, 0, "iptbdnom"); 1506 goto out_card; 1507 } 1508 if (qeth_setup_channel(&card->read)) 1509 goto out_ip; 1510 if (qeth_setup_channel(&card->write)) 1511 goto out_channel; 1512 card->options.layer2 = -1; 1513 card->qeth_service_level.seq_print = qeth_core_sl_print; 1514 register_service_level(&card->qeth_service_level); 1515 return card; 1516 1517 out_channel: 1518 qeth_clean_channel(&card->read); 1519 out_ip: 1520 kfree(card->ip_tbd_list); 1521 out_card: 1522 kfree(card); 1523 out: 1524 return NULL; 1525 } 1526 1527 static int qeth_determine_card_type(struct qeth_card *card) 1528 { 1529 int i = 0; 1530 1531 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1532 1533 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1534 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1535 while (known_devices[i][QETH_DEV_MODEL_IND]) { 1536 if ((CARD_RDEV(card)->id.dev_type == 1537 known_devices[i][QETH_DEV_TYPE_IND]) && 1538 (CARD_RDEV(card)->id.dev_model == 1539 known_devices[i][QETH_DEV_MODEL_IND])) { 1540 card->info.type = known_devices[i][QETH_DEV_MODEL_IND]; 1541 card->qdio.no_out_queues = 1542 known_devices[i][QETH_QUEUE_NO_IND]; 1543 card->qdio.no_in_queues = 1; 1544 card->info.is_multicast_different = 1545 known_devices[i][QETH_MULTICAST_IND]; 1546 qeth_update_from_chp_desc(card); 1547 return 0; 1548 } 1549 i++; 1550 } 1551 card->info.type = QETH_CARD_TYPE_UNKNOWN; 1552 dev_err(&card->gdev->dev, "The adapter hardware is of an " 1553 "unknown type\n"); 1554 return -ENOENT; 1555 } 1556 1557 static int qeth_clear_channel(struct qeth_channel *channel) 1558 { 1559 unsigned long flags; 1560 struct qeth_card *card; 1561 int rc; 1562 1563 card = CARD_FROM_CDEV(channel->ccwdev); 1564 QETH_CARD_TEXT(card, 3, "clearch"); 1565 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1566 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1567 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1568 1569 if (rc) 1570 return rc; 1571 rc = wait_event_interruptible_timeout(card->wait_q, 1572 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1573 if (rc == -ERESTARTSYS) 1574 return rc; 1575 if (channel->state != CH_STATE_STOPPED) 1576 return -ETIME; 1577 channel->state = CH_STATE_DOWN; 1578 return 0; 1579 } 1580 1581 static int qeth_halt_channel(struct qeth_channel *channel) 1582 { 1583 unsigned long flags; 1584 struct qeth_card *card; 1585 int rc; 1586 1587 card = CARD_FROM_CDEV(channel->ccwdev); 1588 QETH_CARD_TEXT(card, 3, "haltch"); 1589 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1590 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1591 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1592 1593 if (rc) 1594 return rc; 1595 rc = wait_event_interruptible_timeout(card->wait_q, 1596 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1597 if (rc == -ERESTARTSYS) 1598 return rc; 1599 if (channel->state != CH_STATE_HALTED) 1600 return -ETIME; 1601 return 0; 1602 } 1603 1604 static int qeth_halt_channels(struct qeth_card *card) 1605 { 1606 int rc1 = 0, rc2 = 0, rc3 = 0; 1607 1608 QETH_CARD_TEXT(card, 3, "haltchs"); 1609 rc1 = qeth_halt_channel(&card->read); 1610 rc2 = qeth_halt_channel(&card->write); 1611 rc3 = qeth_halt_channel(&card->data); 1612 if (rc1) 1613 return rc1; 1614 if (rc2) 1615 return rc2; 1616 return rc3; 1617 } 1618 1619 static int qeth_clear_channels(struct qeth_card *card) 1620 { 1621 int rc1 = 0, rc2 = 0, rc3 = 0; 1622 1623 QETH_CARD_TEXT(card, 3, "clearchs"); 1624 rc1 = qeth_clear_channel(&card->read); 1625 rc2 = qeth_clear_channel(&card->write); 1626 rc3 = qeth_clear_channel(&card->data); 1627 if (rc1) 1628 return rc1; 1629 if (rc2) 1630 return rc2; 1631 return rc3; 1632 } 1633 1634 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1635 { 1636 int rc = 0; 1637 1638 QETH_CARD_TEXT(card, 3, "clhacrd"); 1639 1640 if (halt) 1641 rc = qeth_halt_channels(card); 1642 if (rc) 1643 return rc; 1644 return qeth_clear_channels(card); 1645 } 1646 1647 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1648 { 1649 int rc = 0; 1650 1651 QETH_CARD_TEXT(card, 3, "qdioclr"); 1652 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1653 QETH_QDIO_CLEANING)) { 1654 case QETH_QDIO_ESTABLISHED: 1655 if (card->info.type == QETH_CARD_TYPE_IQD) 1656 rc = qdio_shutdown(CARD_DDEV(card), 1657 QDIO_FLAG_CLEANUP_USING_HALT); 1658 else 1659 rc = qdio_shutdown(CARD_DDEV(card), 1660 QDIO_FLAG_CLEANUP_USING_CLEAR); 1661 if (rc) 1662 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1663 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1664 break; 1665 case QETH_QDIO_CLEANING: 1666 return rc; 1667 default: 1668 break; 1669 } 1670 rc = qeth_clear_halt_card(card, use_halt); 1671 if (rc) 1672 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1673 card->state = CARD_STATE_DOWN; 1674 return rc; 1675 } 1676 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1677 1678 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1679 int *length) 1680 { 1681 struct ciw *ciw; 1682 char *rcd_buf; 1683 int ret; 1684 struct qeth_channel *channel = &card->data; 1685 unsigned long flags; 1686 1687 /* 1688 * scan for RCD command in extended SenseID data 1689 */ 1690 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1691 if (!ciw || ciw->cmd == 0) 1692 return -EOPNOTSUPP; 1693 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1694 if (!rcd_buf) 1695 return -ENOMEM; 1696 1697 channel->ccw.cmd_code = ciw->cmd; 1698 channel->ccw.cda = (__u32) __pa(rcd_buf); 1699 channel->ccw.count = ciw->count; 1700 channel->ccw.flags = CCW_FLAG_SLI; 1701 channel->state = CH_STATE_RCD; 1702 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1703 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1704 QETH_RCD_PARM, LPM_ANYPATH, 0, 1705 QETH_RCD_TIMEOUT); 1706 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1707 if (!ret) 1708 wait_event(card->wait_q, 1709 (channel->state == CH_STATE_RCD_DONE || 1710 channel->state == CH_STATE_DOWN)); 1711 if (channel->state == CH_STATE_DOWN) 1712 ret = -EIO; 1713 else 1714 channel->state = CH_STATE_DOWN; 1715 if (ret) { 1716 kfree(rcd_buf); 1717 *buffer = NULL; 1718 *length = 0; 1719 } else { 1720 *length = ciw->count; 1721 *buffer = rcd_buf; 1722 } 1723 return ret; 1724 } 1725 1726 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1727 { 1728 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1729 card->info.chpid = prcd[30]; 1730 card->info.unit_addr2 = prcd[31]; 1731 card->info.cula = prcd[63]; 1732 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1733 (prcd[0x11] == _ascebc['M'])); 1734 } 1735 1736 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1737 { 1738 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1739 1740 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1741 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1742 card->info.blkt.time_total = 0; 1743 card->info.blkt.inter_packet = 0; 1744 card->info.blkt.inter_packet_jumbo = 0; 1745 } else { 1746 card->info.blkt.time_total = 250; 1747 card->info.blkt.inter_packet = 5; 1748 card->info.blkt.inter_packet_jumbo = 15; 1749 } 1750 } 1751 1752 static void qeth_init_tokens(struct qeth_card *card) 1753 { 1754 card->token.issuer_rm_w = 0x00010103UL; 1755 card->token.cm_filter_w = 0x00010108UL; 1756 card->token.cm_connection_w = 0x0001010aUL; 1757 card->token.ulp_filter_w = 0x0001010bUL; 1758 card->token.ulp_connection_w = 0x0001010dUL; 1759 } 1760 1761 static void qeth_init_func_level(struct qeth_card *card) 1762 { 1763 switch (card->info.type) { 1764 case QETH_CARD_TYPE_IQD: 1765 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1766 break; 1767 case QETH_CARD_TYPE_OSD: 1768 case QETH_CARD_TYPE_OSN: 1769 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1770 break; 1771 default: 1772 break; 1773 } 1774 } 1775 1776 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1777 void (*idx_reply_cb)(struct qeth_channel *, 1778 struct qeth_cmd_buffer *)) 1779 { 1780 struct qeth_cmd_buffer *iob; 1781 unsigned long flags; 1782 int rc; 1783 struct qeth_card *card; 1784 1785 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1786 card = CARD_FROM_CDEV(channel->ccwdev); 1787 iob = qeth_get_buffer(channel); 1788 if (!iob) 1789 return -ENOMEM; 1790 iob->callback = idx_reply_cb; 1791 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1792 channel->ccw.count = QETH_BUFSIZE; 1793 channel->ccw.cda = (__u32) __pa(iob->data); 1794 1795 wait_event(card->wait_q, 1796 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1797 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1798 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1799 rc = ccw_device_start(channel->ccwdev, 1800 &channel->ccw, (addr_t) iob, 0, 0); 1801 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1802 1803 if (rc) { 1804 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1805 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1806 atomic_set(&channel->irq_pending, 0); 1807 wake_up(&card->wait_q); 1808 return rc; 1809 } 1810 rc = wait_event_interruptible_timeout(card->wait_q, 1811 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1812 if (rc == -ERESTARTSYS) 1813 return rc; 1814 if (channel->state != CH_STATE_UP) { 1815 rc = -ETIME; 1816 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1817 qeth_clear_cmd_buffers(channel); 1818 } else 1819 rc = 0; 1820 return rc; 1821 } 1822 1823 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1824 void (*idx_reply_cb)(struct qeth_channel *, 1825 struct qeth_cmd_buffer *)) 1826 { 1827 struct qeth_card *card; 1828 struct qeth_cmd_buffer *iob; 1829 unsigned long flags; 1830 __u16 temp; 1831 __u8 tmp; 1832 int rc; 1833 struct ccw_dev_id temp_devid; 1834 1835 card = CARD_FROM_CDEV(channel->ccwdev); 1836 1837 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1838 1839 iob = qeth_get_buffer(channel); 1840 if (!iob) 1841 return -ENOMEM; 1842 iob->callback = idx_reply_cb; 1843 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1844 channel->ccw.count = IDX_ACTIVATE_SIZE; 1845 channel->ccw.cda = (__u32) __pa(iob->data); 1846 if (channel == &card->write) { 1847 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1848 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1849 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1850 card->seqno.trans_hdr++; 1851 } else { 1852 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1853 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1854 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1855 } 1856 tmp = ((__u8)card->info.portno) | 0x80; 1857 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1858 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1859 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1860 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1861 &card->info.func_level, sizeof(__u16)); 1862 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1863 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1864 temp = (card->info.cula << 8) + card->info.unit_addr2; 1865 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1866 1867 wait_event(card->wait_q, 1868 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1869 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1870 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1871 rc = ccw_device_start(channel->ccwdev, 1872 &channel->ccw, (addr_t) iob, 0, 0); 1873 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1874 1875 if (rc) { 1876 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1877 rc); 1878 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1879 atomic_set(&channel->irq_pending, 0); 1880 wake_up(&card->wait_q); 1881 return rc; 1882 } 1883 rc = wait_event_interruptible_timeout(card->wait_q, 1884 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1885 if (rc == -ERESTARTSYS) 1886 return rc; 1887 if (channel->state != CH_STATE_ACTIVATING) { 1888 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1889 " failed to recover an error on the device\n"); 1890 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1891 dev_name(&channel->ccwdev->dev)); 1892 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1893 qeth_clear_cmd_buffers(channel); 1894 return -ETIME; 1895 } 1896 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1897 } 1898 1899 static int qeth_peer_func_level(int level) 1900 { 1901 if ((level & 0xff) == 8) 1902 return (level & 0xff) + 0x400; 1903 if (((level >> 8) & 3) == 1) 1904 return (level & 0xff) + 0x200; 1905 return level; 1906 } 1907 1908 static void qeth_idx_write_cb(struct qeth_channel *channel, 1909 struct qeth_cmd_buffer *iob) 1910 { 1911 struct qeth_card *card; 1912 __u16 temp; 1913 1914 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1915 1916 if (channel->state == CH_STATE_DOWN) { 1917 channel->state = CH_STATE_ACTIVATING; 1918 goto out; 1919 } 1920 card = CARD_FROM_CDEV(channel->ccwdev); 1921 1922 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1923 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1924 dev_err(&card->write.ccwdev->dev, 1925 "The adapter is used exclusively by another " 1926 "host\n"); 1927 else 1928 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1929 " negative reply\n", 1930 dev_name(&card->write.ccwdev->dev)); 1931 goto out; 1932 } 1933 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1934 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 1935 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 1936 "function level mismatch (sent: 0x%x, received: " 1937 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 1938 card->info.func_level, temp); 1939 goto out; 1940 } 1941 channel->state = CH_STATE_UP; 1942 out: 1943 qeth_release_buffer(channel, iob); 1944 } 1945 1946 static void qeth_idx_read_cb(struct qeth_channel *channel, 1947 struct qeth_cmd_buffer *iob) 1948 { 1949 struct qeth_card *card; 1950 __u16 temp; 1951 1952 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 1953 if (channel->state == CH_STATE_DOWN) { 1954 channel->state = CH_STATE_ACTIVATING; 1955 goto out; 1956 } 1957 1958 card = CARD_FROM_CDEV(channel->ccwdev); 1959 if (qeth_check_idx_response(card, iob->data)) 1960 goto out; 1961 1962 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1963 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1964 case QETH_IDX_ACT_ERR_EXCL: 1965 dev_err(&card->write.ccwdev->dev, 1966 "The adapter is used exclusively by another " 1967 "host\n"); 1968 break; 1969 case QETH_IDX_ACT_ERR_AUTH: 1970 case QETH_IDX_ACT_ERR_AUTH_USER: 1971 dev_err(&card->read.ccwdev->dev, 1972 "Setting the device online failed because of " 1973 "insufficient authorization\n"); 1974 break; 1975 default: 1976 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 1977 " negative reply\n", 1978 dev_name(&card->read.ccwdev->dev)); 1979 } 1980 QETH_CARD_TEXT_(card, 2, "idxread%c", 1981 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1982 goto out; 1983 } 1984 1985 /** 1986 * * temporary fix for microcode bug 1987 * * to revert it,replace OR by AND 1988 * */ 1989 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) || 1990 (card->info.type == QETH_CARD_TYPE_OSD)) 1991 card->info.portname_required = 1; 1992 1993 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1994 if (temp != qeth_peer_func_level(card->info.func_level)) { 1995 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 1996 "level mismatch (sent: 0x%x, received: 0x%x)\n", 1997 dev_name(&card->read.ccwdev->dev), 1998 card->info.func_level, temp); 1999 goto out; 2000 } 2001 memcpy(&card->token.issuer_rm_r, 2002 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2003 QETH_MPC_TOKEN_LENGTH); 2004 memcpy(&card->info.mcl_level[0], 2005 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2006 channel->state = CH_STATE_UP; 2007 out: 2008 qeth_release_buffer(channel, iob); 2009 } 2010 2011 void qeth_prepare_control_data(struct qeth_card *card, int len, 2012 struct qeth_cmd_buffer *iob) 2013 { 2014 qeth_setup_ccw(&card->write, iob->data, len); 2015 iob->callback = qeth_release_buffer; 2016 2017 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2018 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2019 card->seqno.trans_hdr++; 2020 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2021 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2022 card->seqno.pdu_hdr++; 2023 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2024 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2025 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2026 } 2027 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2028 2029 /** 2030 * qeth_send_control_data() - send control command to the card 2031 * @card: qeth_card structure pointer 2032 * @len: size of the command buffer 2033 * @iob: qeth_cmd_buffer pointer 2034 * @reply_cb: callback function pointer 2035 * @cb_card: pointer to the qeth_card structure 2036 * @cb_reply: pointer to the qeth_reply structure 2037 * @cb_cmd: pointer to the original iob for non-IPA 2038 * commands, or to the qeth_ipa_cmd structure 2039 * for the IPA commands. 2040 * @reply_param: private pointer passed to the callback 2041 * 2042 * Returns the value of the `return_code' field of the response 2043 * block returned from the hardware, or other error indication. 2044 * Value of zero indicates successful execution of the command. 2045 * 2046 * Callback function gets called one or more times, with cb_cmd 2047 * pointing to the response returned by the hardware. Callback 2048 * function must return non-zero if more reply blocks are expected, 2049 * and zero if the last or only reply block is received. Callback 2050 * function can get the value of the reply_param pointer from the 2051 * field 'param' of the structure qeth_reply. 2052 */ 2053 2054 int qeth_send_control_data(struct qeth_card *card, int len, 2055 struct qeth_cmd_buffer *iob, 2056 int (*reply_cb)(struct qeth_card *cb_card, 2057 struct qeth_reply *cb_reply, 2058 unsigned long cb_cmd), 2059 void *reply_param) 2060 { 2061 int rc; 2062 unsigned long flags; 2063 struct qeth_reply *reply = NULL; 2064 unsigned long timeout, event_timeout; 2065 struct qeth_ipa_cmd *cmd; 2066 2067 QETH_CARD_TEXT(card, 2, "sendctl"); 2068 2069 if (card->read_or_write_problem) { 2070 qeth_release_buffer(iob->channel, iob); 2071 return -EIO; 2072 } 2073 reply = qeth_alloc_reply(card); 2074 if (!reply) { 2075 return -ENOMEM; 2076 } 2077 reply->callback = reply_cb; 2078 reply->param = reply_param; 2079 if (card->state == CARD_STATE_DOWN) 2080 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2081 else 2082 reply->seqno = card->seqno.ipa++; 2083 init_waitqueue_head(&reply->wait_q); 2084 spin_lock_irqsave(&card->lock, flags); 2085 list_add_tail(&reply->list, &card->cmd_waiter_list); 2086 spin_unlock_irqrestore(&card->lock, flags); 2087 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2088 2089 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2090 qeth_prepare_control_data(card, len, iob); 2091 2092 if (IS_IPA(iob->data)) 2093 event_timeout = QETH_IPA_TIMEOUT; 2094 else 2095 event_timeout = QETH_TIMEOUT; 2096 timeout = jiffies + event_timeout; 2097 2098 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2099 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2100 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2101 (addr_t) iob, 0, 0); 2102 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2103 if (rc) { 2104 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2105 "ccw_device_start rc = %i\n", 2106 dev_name(&card->write.ccwdev->dev), rc); 2107 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2108 spin_lock_irqsave(&card->lock, flags); 2109 list_del_init(&reply->list); 2110 qeth_put_reply(reply); 2111 spin_unlock_irqrestore(&card->lock, flags); 2112 qeth_release_buffer(iob->channel, iob); 2113 atomic_set(&card->write.irq_pending, 0); 2114 wake_up(&card->wait_q); 2115 return rc; 2116 } 2117 2118 /* we have only one long running ipassist, since we can ensure 2119 process context of this command we can sleep */ 2120 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2121 if ((cmd->hdr.command == IPA_CMD_SETIP) && 2122 (cmd->hdr.prot_version == QETH_PROT_IPV4)) { 2123 if (!wait_event_timeout(reply->wait_q, 2124 atomic_read(&reply->received), event_timeout)) 2125 goto time_err; 2126 } else { 2127 while (!atomic_read(&reply->received)) { 2128 if (time_after(jiffies, timeout)) 2129 goto time_err; 2130 cpu_relax(); 2131 } 2132 } 2133 2134 if (reply->rc == -EIO) 2135 goto error; 2136 rc = reply->rc; 2137 qeth_put_reply(reply); 2138 return rc; 2139 2140 time_err: 2141 reply->rc = -ETIME; 2142 spin_lock_irqsave(&reply->card->lock, flags); 2143 list_del_init(&reply->list); 2144 spin_unlock_irqrestore(&reply->card->lock, flags); 2145 atomic_inc(&reply->received); 2146 error: 2147 atomic_set(&card->write.irq_pending, 0); 2148 qeth_release_buffer(iob->channel, iob); 2149 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2150 rc = reply->rc; 2151 qeth_put_reply(reply); 2152 return rc; 2153 } 2154 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2155 2156 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2157 unsigned long data) 2158 { 2159 struct qeth_cmd_buffer *iob; 2160 2161 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2162 2163 iob = (struct qeth_cmd_buffer *) data; 2164 memcpy(&card->token.cm_filter_r, 2165 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2166 QETH_MPC_TOKEN_LENGTH); 2167 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2168 return 0; 2169 } 2170 2171 static int qeth_cm_enable(struct qeth_card *card) 2172 { 2173 int rc; 2174 struct qeth_cmd_buffer *iob; 2175 2176 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2177 2178 iob = qeth_wait_for_buffer(&card->write); 2179 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2180 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2181 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2182 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2183 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2184 2185 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2186 qeth_cm_enable_cb, NULL); 2187 return rc; 2188 } 2189 2190 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2191 unsigned long data) 2192 { 2193 2194 struct qeth_cmd_buffer *iob; 2195 2196 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2197 2198 iob = (struct qeth_cmd_buffer *) data; 2199 memcpy(&card->token.cm_connection_r, 2200 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2201 QETH_MPC_TOKEN_LENGTH); 2202 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2203 return 0; 2204 } 2205 2206 static int qeth_cm_setup(struct qeth_card *card) 2207 { 2208 int rc; 2209 struct qeth_cmd_buffer *iob; 2210 2211 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2212 2213 iob = qeth_wait_for_buffer(&card->write); 2214 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2215 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2216 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2217 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2218 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2219 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2220 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2221 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2222 qeth_cm_setup_cb, NULL); 2223 return rc; 2224 2225 } 2226 2227 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2228 { 2229 switch (card->info.type) { 2230 case QETH_CARD_TYPE_UNKNOWN: 2231 return 1500; 2232 case QETH_CARD_TYPE_IQD: 2233 return card->info.max_mtu; 2234 case QETH_CARD_TYPE_OSD: 2235 switch (card->info.link_type) { 2236 case QETH_LINK_TYPE_HSTR: 2237 case QETH_LINK_TYPE_LANE_TR: 2238 return 2000; 2239 default: 2240 return card->options.layer2 ? 1500 : 1492; 2241 } 2242 case QETH_CARD_TYPE_OSM: 2243 case QETH_CARD_TYPE_OSX: 2244 return card->options.layer2 ? 1500 : 1492; 2245 default: 2246 return 1500; 2247 } 2248 } 2249 2250 static inline int qeth_get_mtu_outof_framesize(int framesize) 2251 { 2252 switch (framesize) { 2253 case 0x4000: 2254 return 8192; 2255 case 0x6000: 2256 return 16384; 2257 case 0xa000: 2258 return 32768; 2259 case 0xffff: 2260 return 57344; 2261 default: 2262 return 0; 2263 } 2264 } 2265 2266 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2267 { 2268 switch (card->info.type) { 2269 case QETH_CARD_TYPE_OSD: 2270 case QETH_CARD_TYPE_OSM: 2271 case QETH_CARD_TYPE_OSX: 2272 case QETH_CARD_TYPE_IQD: 2273 return ((mtu >= 576) && 2274 (mtu <= card->info.max_mtu)); 2275 case QETH_CARD_TYPE_OSN: 2276 case QETH_CARD_TYPE_UNKNOWN: 2277 default: 2278 return 1; 2279 } 2280 } 2281 2282 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2283 unsigned long data) 2284 { 2285 2286 __u16 mtu, framesize; 2287 __u16 len; 2288 __u8 link_type; 2289 struct qeth_cmd_buffer *iob; 2290 2291 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2292 2293 iob = (struct qeth_cmd_buffer *) data; 2294 memcpy(&card->token.ulp_filter_r, 2295 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2296 QETH_MPC_TOKEN_LENGTH); 2297 if (card->info.type == QETH_CARD_TYPE_IQD) { 2298 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2299 mtu = qeth_get_mtu_outof_framesize(framesize); 2300 if (!mtu) { 2301 iob->rc = -EINVAL; 2302 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2303 return 0; 2304 } 2305 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2306 /* frame size has changed */ 2307 if (card->dev && 2308 ((card->dev->mtu == card->info.initial_mtu) || 2309 (card->dev->mtu > mtu))) 2310 card->dev->mtu = mtu; 2311 qeth_free_qdio_buffers(card); 2312 } 2313 card->info.initial_mtu = mtu; 2314 card->info.max_mtu = mtu; 2315 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2316 } else { 2317 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2318 iob->data); 2319 card->info.initial_mtu = min(card->info.max_mtu, 2320 qeth_get_initial_mtu_for_card(card)); 2321 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2322 } 2323 2324 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2325 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2326 memcpy(&link_type, 2327 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2328 card->info.link_type = link_type; 2329 } else 2330 card->info.link_type = 0; 2331 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2332 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2333 return 0; 2334 } 2335 2336 static int qeth_ulp_enable(struct qeth_card *card) 2337 { 2338 int rc; 2339 char prot_type; 2340 struct qeth_cmd_buffer *iob; 2341 2342 /*FIXME: trace view callbacks*/ 2343 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2344 2345 iob = qeth_wait_for_buffer(&card->write); 2346 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2347 2348 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2349 (__u8) card->info.portno; 2350 if (card->options.layer2) 2351 if (card->info.type == QETH_CARD_TYPE_OSN) 2352 prot_type = QETH_PROT_OSN2; 2353 else 2354 prot_type = QETH_PROT_LAYER2; 2355 else 2356 prot_type = QETH_PROT_TCPIP; 2357 2358 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2359 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2360 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2361 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2362 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2363 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data), 2364 card->info.portname, 9); 2365 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2366 qeth_ulp_enable_cb, NULL); 2367 return rc; 2368 2369 } 2370 2371 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2372 unsigned long data) 2373 { 2374 struct qeth_cmd_buffer *iob; 2375 2376 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2377 2378 iob = (struct qeth_cmd_buffer *) data; 2379 memcpy(&card->token.ulp_connection_r, 2380 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2381 QETH_MPC_TOKEN_LENGTH); 2382 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2383 3)) { 2384 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2385 dev_err(&card->gdev->dev, "A connection could not be " 2386 "established because of an OLM limit\n"); 2387 iob->rc = -EMLINK; 2388 } 2389 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2390 return 0; 2391 } 2392 2393 static int qeth_ulp_setup(struct qeth_card *card) 2394 { 2395 int rc; 2396 __u16 temp; 2397 struct qeth_cmd_buffer *iob; 2398 struct ccw_dev_id dev_id; 2399 2400 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2401 2402 iob = qeth_wait_for_buffer(&card->write); 2403 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2404 2405 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2406 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2407 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2408 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2409 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2410 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2411 2412 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2413 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2414 temp = (card->info.cula << 8) + card->info.unit_addr2; 2415 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2416 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2417 qeth_ulp_setup_cb, NULL); 2418 return rc; 2419 } 2420 2421 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2422 { 2423 int rc; 2424 struct qeth_qdio_out_buffer *newbuf; 2425 2426 rc = 0; 2427 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2428 if (!newbuf) { 2429 rc = -ENOMEM; 2430 goto out; 2431 } 2432 newbuf->buffer = q->qdio_bufs[bidx]; 2433 skb_queue_head_init(&newbuf->skb_list); 2434 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2435 newbuf->q = q; 2436 newbuf->aob = NULL; 2437 newbuf->next_pending = q->bufs[bidx]; 2438 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2439 q->bufs[bidx] = newbuf; 2440 if (q->bufstates) { 2441 q->bufstates[bidx].user = newbuf; 2442 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2443 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2444 QETH_CARD_TEXT_(q->card, 2, "%lx", 2445 (long) newbuf->next_pending); 2446 } 2447 out: 2448 return rc; 2449 } 2450 2451 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2452 { 2453 if (!q) 2454 return; 2455 2456 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2457 kfree(q); 2458 } 2459 2460 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2461 { 2462 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2463 2464 if (!q) 2465 return NULL; 2466 2467 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2468 kfree(q); 2469 return NULL; 2470 } 2471 return q; 2472 } 2473 2474 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2475 { 2476 int i, j; 2477 2478 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2479 2480 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2481 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2482 return 0; 2483 2484 QETH_DBF_TEXT(SETUP, 2, "inq"); 2485 card->qdio.in_q = qeth_alloc_qdio_queue(); 2486 if (!card->qdio.in_q) 2487 goto out_nomem; 2488 2489 /* inbound buffer pool */ 2490 if (qeth_alloc_buffer_pool(card)) 2491 goto out_freeinq; 2492 2493 /* outbound */ 2494 card->qdio.out_qs = 2495 kzalloc(card->qdio.no_out_queues * 2496 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2497 if (!card->qdio.out_qs) 2498 goto out_freepool; 2499 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2500 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2501 if (!card->qdio.out_qs[i]) 2502 goto out_freeoutq; 2503 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2504 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2505 card->qdio.out_qs[i]->queue_no = i; 2506 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2507 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2508 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2509 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2510 goto out_freeoutqbufs; 2511 } 2512 } 2513 2514 /* completion */ 2515 if (qeth_alloc_cq(card)) 2516 goto out_freeoutq; 2517 2518 return 0; 2519 2520 out_freeoutqbufs: 2521 while (j > 0) { 2522 --j; 2523 kmem_cache_free(qeth_qdio_outbuf_cache, 2524 card->qdio.out_qs[i]->bufs[j]); 2525 card->qdio.out_qs[i]->bufs[j] = NULL; 2526 } 2527 out_freeoutq: 2528 while (i > 0) { 2529 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2530 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2531 } 2532 kfree(card->qdio.out_qs); 2533 card->qdio.out_qs = NULL; 2534 out_freepool: 2535 qeth_free_buffer_pool(card); 2536 out_freeinq: 2537 qeth_free_qdio_queue(card->qdio.in_q); 2538 card->qdio.in_q = NULL; 2539 out_nomem: 2540 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2541 return -ENOMEM; 2542 } 2543 2544 static void qeth_free_qdio_buffers(struct qeth_card *card) 2545 { 2546 int i, j; 2547 2548 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2549 QETH_QDIO_UNINITIALIZED) 2550 return; 2551 2552 qeth_free_cq(card); 2553 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2554 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2555 if (card->qdio.in_q->bufs[j].rx_skb) 2556 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2557 } 2558 qeth_free_qdio_queue(card->qdio.in_q); 2559 card->qdio.in_q = NULL; 2560 /* inbound buffer pool */ 2561 qeth_free_buffer_pool(card); 2562 /* free outbound qdio_qs */ 2563 if (card->qdio.out_qs) { 2564 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2565 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2566 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2567 } 2568 kfree(card->qdio.out_qs); 2569 card->qdio.out_qs = NULL; 2570 } 2571 } 2572 2573 static void qeth_create_qib_param_field(struct qeth_card *card, 2574 char *param_field) 2575 { 2576 2577 param_field[0] = _ascebc['P']; 2578 param_field[1] = _ascebc['C']; 2579 param_field[2] = _ascebc['I']; 2580 param_field[3] = _ascebc['T']; 2581 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2582 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2583 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2584 } 2585 2586 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2587 char *param_field) 2588 { 2589 param_field[16] = _ascebc['B']; 2590 param_field[17] = _ascebc['L']; 2591 param_field[18] = _ascebc['K']; 2592 param_field[19] = _ascebc['T']; 2593 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2594 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2595 *((unsigned int *) (¶m_field[28])) = 2596 card->info.blkt.inter_packet_jumbo; 2597 } 2598 2599 static int qeth_qdio_activate(struct qeth_card *card) 2600 { 2601 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2602 return qdio_activate(CARD_DDEV(card)); 2603 } 2604 2605 static int qeth_dm_act(struct qeth_card *card) 2606 { 2607 int rc; 2608 struct qeth_cmd_buffer *iob; 2609 2610 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2611 2612 iob = qeth_wait_for_buffer(&card->write); 2613 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2614 2615 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2616 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2617 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2618 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2619 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2620 return rc; 2621 } 2622 2623 static int qeth_mpc_initialize(struct qeth_card *card) 2624 { 2625 int rc; 2626 2627 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2628 2629 rc = qeth_issue_next_read(card); 2630 if (rc) { 2631 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2632 return rc; 2633 } 2634 rc = qeth_cm_enable(card); 2635 if (rc) { 2636 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2637 goto out_qdio; 2638 } 2639 rc = qeth_cm_setup(card); 2640 if (rc) { 2641 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2642 goto out_qdio; 2643 } 2644 rc = qeth_ulp_enable(card); 2645 if (rc) { 2646 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2647 goto out_qdio; 2648 } 2649 rc = qeth_ulp_setup(card); 2650 if (rc) { 2651 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2652 goto out_qdio; 2653 } 2654 rc = qeth_alloc_qdio_buffers(card); 2655 if (rc) { 2656 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2657 goto out_qdio; 2658 } 2659 rc = qeth_qdio_establish(card); 2660 if (rc) { 2661 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2662 qeth_free_qdio_buffers(card); 2663 goto out_qdio; 2664 } 2665 rc = qeth_qdio_activate(card); 2666 if (rc) { 2667 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2668 goto out_qdio; 2669 } 2670 rc = qeth_dm_act(card); 2671 if (rc) { 2672 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2673 goto out_qdio; 2674 } 2675 2676 return 0; 2677 out_qdio: 2678 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2679 qdio_free(CARD_DDEV(card)); 2680 return rc; 2681 } 2682 2683 static void qeth_print_status_with_portname(struct qeth_card *card) 2684 { 2685 char dbf_text[15]; 2686 int i; 2687 2688 sprintf(dbf_text, "%s", card->info.portname + 1); 2689 for (i = 0; i < 8; i++) 2690 dbf_text[i] = 2691 (char) _ebcasc[(__u8) dbf_text[i]]; 2692 dbf_text[8] = 0; 2693 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n" 2694 "with link type %s (portname: %s)\n", 2695 qeth_get_cardname(card), 2696 (card->info.mcl_level[0]) ? " (level: " : "", 2697 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2698 (card->info.mcl_level[0]) ? ")" : "", 2699 qeth_get_cardname_short(card), 2700 dbf_text); 2701 2702 } 2703 2704 static void qeth_print_status_no_portname(struct qeth_card *card) 2705 { 2706 if (card->info.portname[0]) 2707 dev_info(&card->gdev->dev, "Device is a%s " 2708 "card%s%s%s\nwith link type %s " 2709 "(no portname needed by interface).\n", 2710 qeth_get_cardname(card), 2711 (card->info.mcl_level[0]) ? " (level: " : "", 2712 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2713 (card->info.mcl_level[0]) ? ")" : "", 2714 qeth_get_cardname_short(card)); 2715 else 2716 dev_info(&card->gdev->dev, "Device is a%s " 2717 "card%s%s%s\nwith link type %s.\n", 2718 qeth_get_cardname(card), 2719 (card->info.mcl_level[0]) ? " (level: " : "", 2720 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2721 (card->info.mcl_level[0]) ? ")" : "", 2722 qeth_get_cardname_short(card)); 2723 } 2724 2725 void qeth_print_status_message(struct qeth_card *card) 2726 { 2727 switch (card->info.type) { 2728 case QETH_CARD_TYPE_OSD: 2729 case QETH_CARD_TYPE_OSM: 2730 case QETH_CARD_TYPE_OSX: 2731 /* VM will use a non-zero first character 2732 * to indicate a HiperSockets like reporting 2733 * of the level OSA sets the first character to zero 2734 * */ 2735 if (!card->info.mcl_level[0]) { 2736 sprintf(card->info.mcl_level, "%02x%02x", 2737 card->info.mcl_level[2], 2738 card->info.mcl_level[3]); 2739 2740 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2741 break; 2742 } 2743 /* fallthrough */ 2744 case QETH_CARD_TYPE_IQD: 2745 if ((card->info.guestlan) || 2746 (card->info.mcl_level[0] & 0x80)) { 2747 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2748 card->info.mcl_level[0]]; 2749 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2750 card->info.mcl_level[1]]; 2751 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2752 card->info.mcl_level[2]]; 2753 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2754 card->info.mcl_level[3]]; 2755 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2756 } 2757 break; 2758 default: 2759 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2760 } 2761 if (card->info.portname_required) 2762 qeth_print_status_with_portname(card); 2763 else 2764 qeth_print_status_no_portname(card); 2765 } 2766 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2767 2768 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2769 { 2770 struct qeth_buffer_pool_entry *entry; 2771 2772 QETH_CARD_TEXT(card, 5, "inwrklst"); 2773 2774 list_for_each_entry(entry, 2775 &card->qdio.init_pool.entry_list, init_list) { 2776 qeth_put_buffer_pool_entry(card, entry); 2777 } 2778 } 2779 2780 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2781 struct qeth_card *card) 2782 { 2783 struct list_head *plh; 2784 struct qeth_buffer_pool_entry *entry; 2785 int i, free; 2786 struct page *page; 2787 2788 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2789 return NULL; 2790 2791 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2792 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2793 free = 1; 2794 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2795 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2796 free = 0; 2797 break; 2798 } 2799 } 2800 if (free) { 2801 list_del_init(&entry->list); 2802 return entry; 2803 } 2804 } 2805 2806 /* no free buffer in pool so take first one and swap pages */ 2807 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2808 struct qeth_buffer_pool_entry, list); 2809 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2810 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2811 page = alloc_page(GFP_ATOMIC); 2812 if (!page) { 2813 return NULL; 2814 } else { 2815 free_page((unsigned long)entry->elements[i]); 2816 entry->elements[i] = page_address(page); 2817 if (card->options.performance_stats) 2818 card->perf_stats.sg_alloc_page_rx++; 2819 } 2820 } 2821 } 2822 list_del_init(&entry->list); 2823 return entry; 2824 } 2825 2826 static int qeth_init_input_buffer(struct qeth_card *card, 2827 struct qeth_qdio_buffer *buf) 2828 { 2829 struct qeth_buffer_pool_entry *pool_entry; 2830 int i; 2831 2832 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2833 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 2834 if (!buf->rx_skb) 2835 return 1; 2836 } 2837 2838 pool_entry = qeth_find_free_buffer_pool_entry(card); 2839 if (!pool_entry) 2840 return 1; 2841 2842 /* 2843 * since the buffer is accessed only from the input_tasklet 2844 * there shouldn't be a need to synchronize; also, since we use 2845 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2846 * buffers 2847 */ 2848 2849 buf->pool_entry = pool_entry; 2850 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2851 buf->buffer->element[i].length = PAGE_SIZE; 2852 buf->buffer->element[i].addr = pool_entry->elements[i]; 2853 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2854 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2855 else 2856 buf->buffer->element[i].eflags = 0; 2857 buf->buffer->element[i].sflags = 0; 2858 } 2859 return 0; 2860 } 2861 2862 int qeth_init_qdio_queues(struct qeth_card *card) 2863 { 2864 int i, j; 2865 int rc; 2866 2867 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2868 2869 /* inbound queue */ 2870 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, 2871 QDIO_MAX_BUFFERS_PER_Q); 2872 qeth_initialize_working_pool_list(card); 2873 /*give only as many buffers to hardware as we have buffer pool entries*/ 2874 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2875 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2876 card->qdio.in_q->next_buf_to_init = 2877 card->qdio.in_buf_pool.buf_count - 1; 2878 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2879 card->qdio.in_buf_pool.buf_count - 1); 2880 if (rc) { 2881 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2882 return rc; 2883 } 2884 2885 /* completion */ 2886 rc = qeth_cq_init(card); 2887 if (rc) { 2888 return rc; 2889 } 2890 2891 /* outbound queue */ 2892 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2893 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2894 QDIO_MAX_BUFFERS_PER_Q); 2895 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2896 qeth_clear_output_buffer(card->qdio.out_qs[i], 2897 card->qdio.out_qs[i]->bufs[j], 2898 QETH_QDIO_BUF_EMPTY); 2899 } 2900 card->qdio.out_qs[i]->card = card; 2901 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2902 card->qdio.out_qs[i]->do_pack = 0; 2903 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2904 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2905 atomic_set(&card->qdio.out_qs[i]->state, 2906 QETH_OUT_Q_UNLOCKED); 2907 } 2908 return 0; 2909 } 2910 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2911 2912 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2913 { 2914 switch (link_type) { 2915 case QETH_LINK_TYPE_HSTR: 2916 return 2; 2917 default: 2918 return 1; 2919 } 2920 } 2921 2922 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2923 struct qeth_ipa_cmd *cmd, __u8 command, 2924 enum qeth_prot_versions prot) 2925 { 2926 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2927 cmd->hdr.command = command; 2928 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2929 cmd->hdr.seqno = card->seqno.ipa; 2930 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2931 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2932 if (card->options.layer2) 2933 cmd->hdr.prim_version_no = 2; 2934 else 2935 cmd->hdr.prim_version_no = 1; 2936 cmd->hdr.param_count = 1; 2937 cmd->hdr.prot_version = prot; 2938 cmd->hdr.ipa_supported = 0; 2939 cmd->hdr.ipa_enabled = 0; 2940 } 2941 2942 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2943 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2944 { 2945 struct qeth_cmd_buffer *iob; 2946 struct qeth_ipa_cmd *cmd; 2947 2948 iob = qeth_get_buffer(&card->write); 2949 if (iob) { 2950 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2951 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2952 } else { 2953 dev_warn(&card->gdev->dev, 2954 "The qeth driver ran out of channel command buffers\n"); 2955 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2956 dev_name(&card->gdev->dev)); 2957 } 2958 2959 return iob; 2960 } 2961 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2962 2963 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2964 char prot_type) 2965 { 2966 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2967 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2968 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2969 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2970 } 2971 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2972 2973 /** 2974 * qeth_send_ipa_cmd() - send an IPA command 2975 * 2976 * See qeth_send_control_data() for explanation of the arguments. 2977 */ 2978 2979 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2980 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2981 unsigned long), 2982 void *reply_param) 2983 { 2984 int rc; 2985 char prot_type; 2986 2987 QETH_CARD_TEXT(card, 4, "sendipa"); 2988 2989 if (card->options.layer2) 2990 if (card->info.type == QETH_CARD_TYPE_OSN) 2991 prot_type = QETH_PROT_OSN2; 2992 else 2993 prot_type = QETH_PROT_LAYER2; 2994 else 2995 prot_type = QETH_PROT_TCPIP; 2996 qeth_prepare_ipa_cmd(card, iob, prot_type); 2997 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 2998 iob, reply_cb, reply_param); 2999 if (rc == -ETIME) { 3000 qeth_clear_ipacmd_list(card); 3001 qeth_schedule_recovery(card); 3002 } 3003 return rc; 3004 } 3005 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 3006 3007 int qeth_send_startlan(struct qeth_card *card) 3008 { 3009 int rc; 3010 struct qeth_cmd_buffer *iob; 3011 3012 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 3013 3014 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 3015 if (!iob) 3016 return -ENOMEM; 3017 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 3018 return rc; 3019 } 3020 EXPORT_SYMBOL_GPL(qeth_send_startlan); 3021 3022 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 3023 struct qeth_reply *reply, unsigned long data) 3024 { 3025 struct qeth_ipa_cmd *cmd; 3026 3027 QETH_CARD_TEXT(card, 4, "defadpcb"); 3028 3029 cmd = (struct qeth_ipa_cmd *) data; 3030 if (cmd->hdr.return_code == 0) 3031 cmd->hdr.return_code = 3032 cmd->data.setadapterparms.hdr.return_code; 3033 return 0; 3034 } 3035 3036 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 3037 struct qeth_reply *reply, unsigned long data) 3038 { 3039 struct qeth_ipa_cmd *cmd; 3040 3041 QETH_CARD_TEXT(card, 3, "quyadpcb"); 3042 3043 cmd = (struct qeth_ipa_cmd *) data; 3044 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 3045 card->info.link_type = 3046 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 3047 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 3048 } 3049 card->options.adp.supported_funcs = 3050 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 3051 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 3052 } 3053 3054 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 3055 __u32 command, __u32 cmdlen) 3056 { 3057 struct qeth_cmd_buffer *iob; 3058 struct qeth_ipa_cmd *cmd; 3059 3060 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3061 QETH_PROT_IPV4); 3062 if (iob) { 3063 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3064 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3065 cmd->data.setadapterparms.hdr.command_code = command; 3066 cmd->data.setadapterparms.hdr.used_total = 1; 3067 cmd->data.setadapterparms.hdr.seq_no = 1; 3068 } 3069 3070 return iob; 3071 } 3072 3073 int qeth_query_setadapterparms(struct qeth_card *card) 3074 { 3075 int rc; 3076 struct qeth_cmd_buffer *iob; 3077 3078 QETH_CARD_TEXT(card, 3, "queryadp"); 3079 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3080 sizeof(struct qeth_ipacmd_setadpparms)); 3081 if (!iob) 3082 return -ENOMEM; 3083 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3084 return rc; 3085 } 3086 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3087 3088 static int qeth_query_ipassists_cb(struct qeth_card *card, 3089 struct qeth_reply *reply, unsigned long data) 3090 { 3091 struct qeth_ipa_cmd *cmd; 3092 3093 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3094 3095 cmd = (struct qeth_ipa_cmd *) data; 3096 3097 switch (cmd->hdr.return_code) { 3098 case IPA_RC_NOTSUPP: 3099 case IPA_RC_L2_UNSUPPORTED_CMD: 3100 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3101 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3102 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3103 return -0; 3104 default: 3105 if (cmd->hdr.return_code) { 3106 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3107 "rc=%d\n", 3108 dev_name(&card->gdev->dev), 3109 cmd->hdr.return_code); 3110 return 0; 3111 } 3112 } 3113 3114 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3115 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3116 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3117 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3118 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3119 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3120 } else 3121 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3122 "\n", dev_name(&card->gdev->dev)); 3123 return 0; 3124 } 3125 3126 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3127 { 3128 int rc; 3129 struct qeth_cmd_buffer *iob; 3130 3131 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3132 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3133 if (!iob) 3134 return -ENOMEM; 3135 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3136 return rc; 3137 } 3138 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3139 3140 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3141 struct qeth_reply *reply, unsigned long data) 3142 { 3143 struct qeth_ipa_cmd *cmd; 3144 struct qeth_switch_info *sw_info; 3145 struct qeth_query_switch_attributes *attrs; 3146 3147 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3148 cmd = (struct qeth_ipa_cmd *) data; 3149 sw_info = (struct qeth_switch_info *)reply->param; 3150 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3151 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3152 sw_info->capabilities = attrs->capabilities; 3153 sw_info->settings = attrs->settings; 3154 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3155 sw_info->settings); 3156 } 3157 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3158 3159 return 0; 3160 } 3161 3162 int qeth_query_switch_attributes(struct qeth_card *card, 3163 struct qeth_switch_info *sw_info) 3164 { 3165 struct qeth_cmd_buffer *iob; 3166 3167 QETH_CARD_TEXT(card, 2, "qswiattr"); 3168 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3169 return -EOPNOTSUPP; 3170 if (!netif_carrier_ok(card->dev)) 3171 return -ENOMEDIUM; 3172 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3173 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3174 if (!iob) 3175 return -ENOMEM; 3176 return qeth_send_ipa_cmd(card, iob, 3177 qeth_query_switch_attributes_cb, sw_info); 3178 } 3179 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3180 3181 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3182 struct qeth_reply *reply, unsigned long data) 3183 { 3184 struct qeth_ipa_cmd *cmd; 3185 __u16 rc; 3186 3187 cmd = (struct qeth_ipa_cmd *)data; 3188 rc = cmd->hdr.return_code; 3189 if (rc) 3190 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3191 else 3192 card->info.diagass_support = cmd->data.diagass.ext; 3193 return 0; 3194 } 3195 3196 static int qeth_query_setdiagass(struct qeth_card *card) 3197 { 3198 struct qeth_cmd_buffer *iob; 3199 struct qeth_ipa_cmd *cmd; 3200 3201 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3202 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3203 if (!iob) 3204 return -ENOMEM; 3205 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3206 cmd->data.diagass.subcmd_len = 16; 3207 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3208 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3209 } 3210 3211 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3212 { 3213 unsigned long info = get_zeroed_page(GFP_KERNEL); 3214 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3215 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3216 struct ccw_dev_id ccwid; 3217 int level; 3218 3219 tid->chpid = card->info.chpid; 3220 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3221 tid->ssid = ccwid.ssid; 3222 tid->devno = ccwid.devno; 3223 if (!info) 3224 return; 3225 level = stsi(NULL, 0, 0, 0); 3226 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3227 tid->lparnr = info222->lpar_number; 3228 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3229 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3230 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3231 } 3232 free_page(info); 3233 return; 3234 } 3235 3236 static int qeth_hw_trap_cb(struct qeth_card *card, 3237 struct qeth_reply *reply, unsigned long data) 3238 { 3239 struct qeth_ipa_cmd *cmd; 3240 __u16 rc; 3241 3242 cmd = (struct qeth_ipa_cmd *)data; 3243 rc = cmd->hdr.return_code; 3244 if (rc) 3245 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3246 return 0; 3247 } 3248 3249 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3250 { 3251 struct qeth_cmd_buffer *iob; 3252 struct qeth_ipa_cmd *cmd; 3253 3254 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3255 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3256 if (!iob) 3257 return -ENOMEM; 3258 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3259 cmd->data.diagass.subcmd_len = 80; 3260 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3261 cmd->data.diagass.type = 1; 3262 cmd->data.diagass.action = action; 3263 switch (action) { 3264 case QETH_DIAGS_TRAP_ARM: 3265 cmd->data.diagass.options = 0x0003; 3266 cmd->data.diagass.ext = 0x00010000 + 3267 sizeof(struct qeth_trap_id); 3268 qeth_get_trap_id(card, 3269 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3270 break; 3271 case QETH_DIAGS_TRAP_DISARM: 3272 cmd->data.diagass.options = 0x0001; 3273 break; 3274 case QETH_DIAGS_TRAP_CAPTURE: 3275 break; 3276 } 3277 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3278 } 3279 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3280 3281 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf, 3282 unsigned int qdio_error, const char *dbftext) 3283 { 3284 if (qdio_error) { 3285 QETH_CARD_TEXT(card, 2, dbftext); 3286 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3287 buf->element[15].sflags); 3288 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3289 buf->element[14].sflags); 3290 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3291 if ((buf->element[15].sflags) == 0x12) { 3292 card->stats.rx_dropped++; 3293 return 0; 3294 } else 3295 return 1; 3296 } 3297 return 0; 3298 } 3299 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors); 3300 3301 static void qeth_buffer_reclaim_work(struct work_struct *work) 3302 { 3303 struct qeth_card *card = container_of(work, struct qeth_card, 3304 buffer_reclaim_work.work); 3305 3306 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3307 qeth_queue_input_buffer(card, card->reclaim_index); 3308 } 3309 3310 void qeth_queue_input_buffer(struct qeth_card *card, int index) 3311 { 3312 struct qeth_qdio_q *queue = card->qdio.in_q; 3313 struct list_head *lh; 3314 int count; 3315 int i; 3316 int rc; 3317 int newcount = 0; 3318 3319 count = (index < queue->next_buf_to_init)? 3320 card->qdio.in_buf_pool.buf_count - 3321 (queue->next_buf_to_init - index) : 3322 card->qdio.in_buf_pool.buf_count - 3323 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3324 /* only requeue at a certain threshold to avoid SIGAs */ 3325 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3326 for (i = queue->next_buf_to_init; 3327 i < queue->next_buf_to_init + count; ++i) { 3328 if (qeth_init_input_buffer(card, 3329 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3330 break; 3331 } else { 3332 newcount++; 3333 } 3334 } 3335 3336 if (newcount < count) { 3337 /* we are in memory shortage so we switch back to 3338 traditional skb allocation and drop packages */ 3339 atomic_set(&card->force_alloc_skb, 3); 3340 count = newcount; 3341 } else { 3342 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3343 } 3344 3345 if (!count) { 3346 i = 0; 3347 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3348 i++; 3349 if (i == card->qdio.in_buf_pool.buf_count) { 3350 QETH_CARD_TEXT(card, 2, "qsarbw"); 3351 card->reclaim_index = index; 3352 schedule_delayed_work( 3353 &card->buffer_reclaim_work, 3354 QETH_RECLAIM_WORK_TIME); 3355 } 3356 return; 3357 } 3358 3359 /* 3360 * according to old code it should be avoided to requeue all 3361 * 128 buffers in order to benefit from PCI avoidance. 3362 * this function keeps at least one buffer (the buffer at 3363 * 'index') un-requeued -> this buffer is the first buffer that 3364 * will be requeued the next time 3365 */ 3366 if (card->options.performance_stats) { 3367 card->perf_stats.inbound_do_qdio_cnt++; 3368 card->perf_stats.inbound_do_qdio_start_time = 3369 qeth_get_micros(); 3370 } 3371 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3372 queue->next_buf_to_init, count); 3373 if (card->options.performance_stats) 3374 card->perf_stats.inbound_do_qdio_time += 3375 qeth_get_micros() - 3376 card->perf_stats.inbound_do_qdio_start_time; 3377 if (rc) { 3378 QETH_CARD_TEXT(card, 2, "qinberr"); 3379 } 3380 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3381 QDIO_MAX_BUFFERS_PER_Q; 3382 } 3383 } 3384 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer); 3385 3386 static int qeth_handle_send_error(struct qeth_card *card, 3387 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3388 { 3389 int sbalf15 = buffer->buffer->element[15].sflags; 3390 3391 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3392 if (card->info.type == QETH_CARD_TYPE_IQD) { 3393 if (sbalf15 == 0) { 3394 qdio_err = 0; 3395 } else { 3396 qdio_err = 1; 3397 } 3398 } 3399 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3400 3401 if (!qdio_err) 3402 return QETH_SEND_ERROR_NONE; 3403 3404 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3405 return QETH_SEND_ERROR_RETRY; 3406 3407 QETH_CARD_TEXT(card, 1, "lnkfail"); 3408 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3409 (u16)qdio_err, (u8)sbalf15); 3410 return QETH_SEND_ERROR_LINK_FAILURE; 3411 } 3412 3413 /* 3414 * Switched to packing state if the number of used buffers on a queue 3415 * reaches a certain limit. 3416 */ 3417 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3418 { 3419 if (!queue->do_pack) { 3420 if (atomic_read(&queue->used_buffers) 3421 >= QETH_HIGH_WATERMARK_PACK){ 3422 /* switch non-PACKING -> PACKING */ 3423 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3424 if (queue->card->options.performance_stats) 3425 queue->card->perf_stats.sc_dp_p++; 3426 queue->do_pack = 1; 3427 } 3428 } 3429 } 3430 3431 /* 3432 * Switches from packing to non-packing mode. If there is a packing 3433 * buffer on the queue this buffer will be prepared to be flushed. 3434 * In that case 1 is returned to inform the caller. If no buffer 3435 * has to be flushed, zero is returned. 3436 */ 3437 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3438 { 3439 struct qeth_qdio_out_buffer *buffer; 3440 int flush_count = 0; 3441 3442 if (queue->do_pack) { 3443 if (atomic_read(&queue->used_buffers) 3444 <= QETH_LOW_WATERMARK_PACK) { 3445 /* switch PACKING -> non-PACKING */ 3446 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3447 if (queue->card->options.performance_stats) 3448 queue->card->perf_stats.sc_p_dp++; 3449 queue->do_pack = 0; 3450 /* flush packing buffers */ 3451 buffer = queue->bufs[queue->next_buf_to_fill]; 3452 if ((atomic_read(&buffer->state) == 3453 QETH_QDIO_BUF_EMPTY) && 3454 (buffer->next_element_to_fill > 0)) { 3455 atomic_set(&buffer->state, 3456 QETH_QDIO_BUF_PRIMED); 3457 flush_count++; 3458 queue->next_buf_to_fill = 3459 (queue->next_buf_to_fill + 1) % 3460 QDIO_MAX_BUFFERS_PER_Q; 3461 } 3462 } 3463 } 3464 return flush_count; 3465 } 3466 3467 3468 /* 3469 * Called to flush a packing buffer if no more pci flags are on the queue. 3470 * Checks if there is a packing buffer and prepares it to be flushed. 3471 * In that case returns 1, otherwise zero. 3472 */ 3473 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue) 3474 { 3475 struct qeth_qdio_out_buffer *buffer; 3476 3477 buffer = queue->bufs[queue->next_buf_to_fill]; 3478 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3479 (buffer->next_element_to_fill > 0)) { 3480 /* it's a packing buffer */ 3481 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3482 queue->next_buf_to_fill = 3483 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3484 return 1; 3485 } 3486 return 0; 3487 } 3488 3489 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3490 int count) 3491 { 3492 struct qeth_qdio_out_buffer *buf; 3493 int rc; 3494 int i; 3495 unsigned int qdio_flags; 3496 3497 for (i = index; i < index + count; ++i) { 3498 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3499 buf = queue->bufs[bidx]; 3500 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3501 SBAL_EFLAGS_LAST_ENTRY; 3502 3503 if (queue->bufstates) 3504 queue->bufstates[bidx].user = buf; 3505 3506 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3507 continue; 3508 3509 if (!queue->do_pack) { 3510 if ((atomic_read(&queue->used_buffers) >= 3511 (QETH_HIGH_WATERMARK_PACK - 3512 QETH_WATERMARK_PACK_FUZZ)) && 3513 !atomic_read(&queue->set_pci_flags_count)) { 3514 /* it's likely that we'll go to packing 3515 * mode soon */ 3516 atomic_inc(&queue->set_pci_flags_count); 3517 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3518 } 3519 } else { 3520 if (!atomic_read(&queue->set_pci_flags_count)) { 3521 /* 3522 * there's no outstanding PCI any more, so we 3523 * have to request a PCI to be sure the the PCI 3524 * will wake at some time in the future then we 3525 * can flush packed buffers that might still be 3526 * hanging around, which can happen if no 3527 * further send was requested by the stack 3528 */ 3529 atomic_inc(&queue->set_pci_flags_count); 3530 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3531 } 3532 } 3533 } 3534 3535 queue->card->dev->trans_start = jiffies; 3536 if (queue->card->options.performance_stats) { 3537 queue->card->perf_stats.outbound_do_qdio_cnt++; 3538 queue->card->perf_stats.outbound_do_qdio_start_time = 3539 qeth_get_micros(); 3540 } 3541 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3542 if (atomic_read(&queue->set_pci_flags_count)) 3543 qdio_flags |= QDIO_FLAG_PCI_OUT; 3544 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3545 queue->queue_no, index, count); 3546 if (queue->card->options.performance_stats) 3547 queue->card->perf_stats.outbound_do_qdio_time += 3548 qeth_get_micros() - 3549 queue->card->perf_stats.outbound_do_qdio_start_time; 3550 atomic_add(count, &queue->used_buffers); 3551 if (rc) { 3552 queue->card->stats.tx_errors += count; 3553 /* ignore temporary SIGA errors without busy condition */ 3554 if (rc == -ENOBUFS) 3555 return; 3556 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3557 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3558 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3559 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3560 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3561 3562 /* this must not happen under normal circumstances. if it 3563 * happens something is really wrong -> recover */ 3564 qeth_schedule_recovery(queue->card); 3565 return; 3566 } 3567 if (queue->card->options.performance_stats) 3568 queue->card->perf_stats.bufs_sent += count; 3569 } 3570 3571 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3572 { 3573 int index; 3574 int flush_cnt = 0; 3575 int q_was_packing = 0; 3576 3577 /* 3578 * check if weed have to switch to non-packing mode or if 3579 * we have to get a pci flag out on the queue 3580 */ 3581 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3582 !atomic_read(&queue->set_pci_flags_count)) { 3583 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3584 QETH_OUT_Q_UNLOCKED) { 3585 /* 3586 * If we get in here, there was no action in 3587 * do_send_packet. So, we check if there is a 3588 * packing buffer to be flushed here. 3589 */ 3590 netif_stop_queue(queue->card->dev); 3591 index = queue->next_buf_to_fill; 3592 q_was_packing = queue->do_pack; 3593 /* queue->do_pack may change */ 3594 barrier(); 3595 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3596 if (!flush_cnt && 3597 !atomic_read(&queue->set_pci_flags_count)) 3598 flush_cnt += 3599 qeth_flush_buffers_on_no_pci(queue); 3600 if (queue->card->options.performance_stats && 3601 q_was_packing) 3602 queue->card->perf_stats.bufs_sent_pack += 3603 flush_cnt; 3604 if (flush_cnt) 3605 qeth_flush_buffers(queue, index, flush_cnt); 3606 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3607 } 3608 } 3609 } 3610 3611 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3612 unsigned long card_ptr) 3613 { 3614 struct qeth_card *card = (struct qeth_card *)card_ptr; 3615 3616 if (card->dev && (card->dev->flags & IFF_UP)) 3617 napi_schedule(&card->napi); 3618 } 3619 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3620 3621 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3622 { 3623 int rc; 3624 3625 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3626 rc = -1; 3627 goto out; 3628 } else { 3629 if (card->options.cq == cq) { 3630 rc = 0; 3631 goto out; 3632 } 3633 3634 if (card->state != CARD_STATE_DOWN && 3635 card->state != CARD_STATE_RECOVER) { 3636 rc = -1; 3637 goto out; 3638 } 3639 3640 qeth_free_qdio_buffers(card); 3641 card->options.cq = cq; 3642 rc = 0; 3643 } 3644 out: 3645 return rc; 3646 3647 } 3648 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3649 3650 3651 static void qeth_qdio_cq_handler(struct qeth_card *card, 3652 unsigned int qdio_err, 3653 unsigned int queue, int first_element, int count) { 3654 struct qeth_qdio_q *cq = card->qdio.c_q; 3655 int i; 3656 int rc; 3657 3658 if (!qeth_is_cq(card, queue)) 3659 goto out; 3660 3661 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3662 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3663 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3664 3665 if (qdio_err) { 3666 netif_stop_queue(card->dev); 3667 qeth_schedule_recovery(card); 3668 goto out; 3669 } 3670 3671 if (card->options.performance_stats) { 3672 card->perf_stats.cq_cnt++; 3673 card->perf_stats.cq_start_time = qeth_get_micros(); 3674 } 3675 3676 for (i = first_element; i < first_element + count; ++i) { 3677 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3678 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3679 int e; 3680 3681 e = 0; 3682 while (buffer->element[e].addr) { 3683 unsigned long phys_aob_addr; 3684 3685 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3686 qeth_qdio_handle_aob(card, phys_aob_addr); 3687 buffer->element[e].addr = NULL; 3688 buffer->element[e].eflags = 0; 3689 buffer->element[e].sflags = 0; 3690 buffer->element[e].length = 0; 3691 3692 ++e; 3693 } 3694 3695 buffer->element[15].eflags = 0; 3696 buffer->element[15].sflags = 0; 3697 } 3698 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3699 card->qdio.c_q->next_buf_to_init, 3700 count); 3701 if (rc) { 3702 dev_warn(&card->gdev->dev, 3703 "QDIO reported an error, rc=%i\n", rc); 3704 QETH_CARD_TEXT(card, 2, "qcqherr"); 3705 } 3706 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3707 + count) % QDIO_MAX_BUFFERS_PER_Q; 3708 3709 netif_wake_queue(card->dev); 3710 3711 if (card->options.performance_stats) { 3712 int delta_t = qeth_get_micros(); 3713 delta_t -= card->perf_stats.cq_start_time; 3714 card->perf_stats.cq_time += delta_t; 3715 } 3716 out: 3717 return; 3718 } 3719 3720 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3721 unsigned int queue, int first_elem, int count, 3722 unsigned long card_ptr) 3723 { 3724 struct qeth_card *card = (struct qeth_card *)card_ptr; 3725 3726 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3727 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3728 3729 if (qeth_is_cq(card, queue)) 3730 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3731 else if (qdio_err) 3732 qeth_schedule_recovery(card); 3733 3734 3735 } 3736 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3737 3738 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3739 unsigned int qdio_error, int __queue, int first_element, 3740 int count, unsigned long card_ptr) 3741 { 3742 struct qeth_card *card = (struct qeth_card *) card_ptr; 3743 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3744 struct qeth_qdio_out_buffer *buffer; 3745 int i; 3746 3747 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3748 if (qdio_error & QDIO_ERROR_FATAL) { 3749 QETH_CARD_TEXT(card, 2, "achkcond"); 3750 netif_stop_queue(card->dev); 3751 qeth_schedule_recovery(card); 3752 return; 3753 } 3754 if (card->options.performance_stats) { 3755 card->perf_stats.outbound_handler_cnt++; 3756 card->perf_stats.outbound_handler_start_time = 3757 qeth_get_micros(); 3758 } 3759 for (i = first_element; i < (first_element + count); ++i) { 3760 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3761 buffer = queue->bufs[bidx]; 3762 qeth_handle_send_error(card, buffer, qdio_error); 3763 3764 if (queue->bufstates && 3765 (queue->bufstates[bidx].flags & 3766 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3767 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3768 3769 if (atomic_cmpxchg(&buffer->state, 3770 QETH_QDIO_BUF_PRIMED, 3771 QETH_QDIO_BUF_PENDING) == 3772 QETH_QDIO_BUF_PRIMED) { 3773 qeth_notify_skbs(queue, buffer, 3774 TX_NOTIFY_PENDING); 3775 } 3776 buffer->aob = queue->bufstates[bidx].aob; 3777 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3778 QETH_CARD_TEXT(queue->card, 5, "aob"); 3779 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3780 virt_to_phys(buffer->aob)); 3781 if (qeth_init_qdio_out_buf(queue, bidx)) { 3782 QETH_CARD_TEXT(card, 2, "outofbuf"); 3783 qeth_schedule_recovery(card); 3784 } 3785 } else { 3786 if (card->options.cq == QETH_CQ_ENABLED) { 3787 enum iucv_tx_notify n; 3788 3789 n = qeth_compute_cq_notification( 3790 buffer->buffer->element[15].sflags, 0); 3791 qeth_notify_skbs(queue, buffer, n); 3792 } 3793 3794 qeth_clear_output_buffer(queue, buffer, 3795 QETH_QDIO_BUF_EMPTY); 3796 } 3797 qeth_cleanup_handled_pending(queue, bidx, 0); 3798 } 3799 atomic_sub(count, &queue->used_buffers); 3800 /* check if we need to do something on this outbound queue */ 3801 if (card->info.type != QETH_CARD_TYPE_IQD) 3802 qeth_check_outbound_queue(queue); 3803 3804 netif_wake_queue(queue->card->dev); 3805 if (card->options.performance_stats) 3806 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3807 card->perf_stats.outbound_handler_start_time; 3808 } 3809 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3810 3811 /** 3812 * Note: Function assumes that we have 4 outbound queues. 3813 */ 3814 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3815 int ipv, int cast_type) 3816 { 3817 __be16 *tci; 3818 u8 tos; 3819 3820 if (cast_type && card->info.is_multicast_different) 3821 return card->info.is_multicast_different & 3822 (card->qdio.no_out_queues - 1); 3823 3824 switch (card->qdio.do_prio_queueing) { 3825 case QETH_PRIO_Q_ING_TOS: 3826 case QETH_PRIO_Q_ING_PREC: 3827 switch (ipv) { 3828 case 4: 3829 tos = ipv4_get_dsfield(ip_hdr(skb)); 3830 break; 3831 case 6: 3832 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3833 break; 3834 default: 3835 return card->qdio.default_out_queue; 3836 } 3837 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3838 return ~tos >> 6 & 3; 3839 if (tos & IPTOS_MINCOST) 3840 return 3; 3841 if (tos & IPTOS_RELIABILITY) 3842 return 2; 3843 if (tos & IPTOS_THROUGHPUT) 3844 return 1; 3845 if (tos & IPTOS_LOWDELAY) 3846 return 0; 3847 break; 3848 case QETH_PRIO_Q_ING_SKB: 3849 if (skb->priority > 5) 3850 return 0; 3851 return ~skb->priority >> 1 & 3; 3852 case QETH_PRIO_Q_ING_VLAN: 3853 tci = &((struct ethhdr *)skb->data)->h_proto; 3854 if (*tci == ETH_P_8021Q) 3855 return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3; 3856 break; 3857 default: 3858 break; 3859 } 3860 return card->qdio.default_out_queue; 3861 } 3862 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3863 3864 int qeth_get_elements_for_frags(struct sk_buff *skb) 3865 { 3866 int cnt, length, e, elements = 0; 3867 struct skb_frag_struct *frag; 3868 char *data; 3869 3870 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3871 frag = &skb_shinfo(skb)->frags[cnt]; 3872 data = (char *)page_to_phys(skb_frag_page(frag)) + 3873 frag->page_offset; 3874 length = frag->size; 3875 e = PFN_UP((unsigned long)data + length - 1) - 3876 PFN_DOWN((unsigned long)data); 3877 elements += e; 3878 } 3879 return elements; 3880 } 3881 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3882 3883 int qeth_get_elements_no(struct qeth_card *card, 3884 struct sk_buff *skb, int elems) 3885 { 3886 int dlen = skb->len - skb->data_len; 3887 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) - 3888 PFN_DOWN((unsigned long)skb->data); 3889 3890 elements_needed += qeth_get_elements_for_frags(skb); 3891 3892 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3893 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3894 "(Number=%d / Length=%d). Discarded.\n", 3895 (elements_needed+elems), skb->len); 3896 return 0; 3897 } 3898 return elements_needed; 3899 } 3900 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3901 3902 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3903 { 3904 int hroom, inpage, rest; 3905 3906 if (((unsigned long)skb->data & PAGE_MASK) != 3907 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3908 hroom = skb_headroom(skb); 3909 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3910 rest = len - inpage; 3911 if (rest > hroom) 3912 return 1; 3913 memmove(skb->data - rest, skb->data, skb->len - skb->data_len); 3914 skb->data -= rest; 3915 skb->tail -= rest; 3916 *hdr = (struct qeth_hdr *)skb->data; 3917 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3918 } 3919 return 0; 3920 } 3921 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3922 3923 static inline void __qeth_fill_buffer(struct sk_buff *skb, 3924 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, 3925 int offset) 3926 { 3927 int length = skb->len - skb->data_len; 3928 int length_here; 3929 int element; 3930 char *data; 3931 int first_lap, cnt; 3932 struct skb_frag_struct *frag; 3933 3934 element = *next_element_to_fill; 3935 data = skb->data; 3936 first_lap = (is_tso == 0 ? 1 : 0); 3937 3938 if (offset >= 0) { 3939 data = skb->data + offset; 3940 length -= offset; 3941 first_lap = 0; 3942 } 3943 3944 while (length > 0) { 3945 /* length_here is the remaining amount of data in this page */ 3946 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3947 if (length < length_here) 3948 length_here = length; 3949 3950 buffer->element[element].addr = data; 3951 buffer->element[element].length = length_here; 3952 length -= length_here; 3953 if (!length) { 3954 if (first_lap) 3955 if (skb_shinfo(skb)->nr_frags) 3956 buffer->element[element].eflags = 3957 SBAL_EFLAGS_FIRST_FRAG; 3958 else 3959 buffer->element[element].eflags = 0; 3960 else 3961 buffer->element[element].eflags = 3962 SBAL_EFLAGS_MIDDLE_FRAG; 3963 } else { 3964 if (first_lap) 3965 buffer->element[element].eflags = 3966 SBAL_EFLAGS_FIRST_FRAG; 3967 else 3968 buffer->element[element].eflags = 3969 SBAL_EFLAGS_MIDDLE_FRAG; 3970 } 3971 data += length_here; 3972 element++; 3973 first_lap = 0; 3974 } 3975 3976 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3977 frag = &skb_shinfo(skb)->frags[cnt]; 3978 data = (char *)page_to_phys(skb_frag_page(frag)) + 3979 frag->page_offset; 3980 length = frag->size; 3981 while (length > 0) { 3982 length_here = PAGE_SIZE - 3983 ((unsigned long) data % PAGE_SIZE); 3984 if (length < length_here) 3985 length_here = length; 3986 3987 buffer->element[element].addr = data; 3988 buffer->element[element].length = length_here; 3989 buffer->element[element].eflags = 3990 SBAL_EFLAGS_MIDDLE_FRAG; 3991 length -= length_here; 3992 data += length_here; 3993 element++; 3994 } 3995 } 3996 3997 if (buffer->element[element - 1].eflags) 3998 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3999 *next_element_to_fill = element; 4000 } 4001 4002 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 4003 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, 4004 struct qeth_hdr *hdr, int offset, int hd_len) 4005 { 4006 struct qdio_buffer *buffer; 4007 int flush_cnt = 0, hdr_len, large_send = 0; 4008 4009 buffer = buf->buffer; 4010 atomic_inc(&skb->users); 4011 skb_queue_tail(&buf->skb_list, skb); 4012 4013 /*check first on TSO ....*/ 4014 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) { 4015 int element = buf->next_element_to_fill; 4016 4017 hdr_len = sizeof(struct qeth_hdr_tso) + 4018 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len; 4019 /*fill first buffer entry only with header information */ 4020 buffer->element[element].addr = skb->data; 4021 buffer->element[element].length = hdr_len; 4022 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4023 buf->next_element_to_fill++; 4024 skb->data += hdr_len; 4025 skb->len -= hdr_len; 4026 large_send = 1; 4027 } 4028 4029 if (offset >= 0) { 4030 int element = buf->next_element_to_fill; 4031 buffer->element[element].addr = hdr; 4032 buffer->element[element].length = sizeof(struct qeth_hdr) + 4033 hd_len; 4034 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4035 buf->is_header[element] = 1; 4036 buf->next_element_to_fill++; 4037 } 4038 4039 __qeth_fill_buffer(skb, buffer, large_send, 4040 (int *)&buf->next_element_to_fill, offset); 4041 4042 if (!queue->do_pack) { 4043 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4044 /* set state to PRIMED -> will be flushed */ 4045 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4046 flush_cnt = 1; 4047 } else { 4048 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4049 if (queue->card->options.performance_stats) 4050 queue->card->perf_stats.skbs_sent_pack++; 4051 if (buf->next_element_to_fill >= 4052 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4053 /* 4054 * packed buffer if full -> set state PRIMED 4055 * -> will be flushed 4056 */ 4057 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4058 flush_cnt = 1; 4059 } 4060 } 4061 return flush_cnt; 4062 } 4063 4064 int qeth_do_send_packet_fast(struct qeth_card *card, 4065 struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4066 struct qeth_hdr *hdr, int elements_needed, 4067 int offset, int hd_len) 4068 { 4069 struct qeth_qdio_out_buffer *buffer; 4070 int index; 4071 4072 /* spin until we get the queue ... */ 4073 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4074 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4075 /* ... now we've got the queue */ 4076 index = queue->next_buf_to_fill; 4077 buffer = queue->bufs[queue->next_buf_to_fill]; 4078 /* 4079 * check if buffer is empty to make sure that we do not 'overtake' 4080 * ourselves and try to fill a buffer that is already primed 4081 */ 4082 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4083 goto out; 4084 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % 4085 QDIO_MAX_BUFFERS_PER_Q; 4086 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4087 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4088 qeth_flush_buffers(queue, index, 1); 4089 return 0; 4090 out: 4091 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4092 return -EBUSY; 4093 } 4094 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4095 4096 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4097 struct sk_buff *skb, struct qeth_hdr *hdr, 4098 int elements_needed) 4099 { 4100 struct qeth_qdio_out_buffer *buffer; 4101 int start_index; 4102 int flush_count = 0; 4103 int do_pack = 0; 4104 int tmp; 4105 int rc = 0; 4106 4107 /* spin until we get the queue ... */ 4108 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4109 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4110 start_index = queue->next_buf_to_fill; 4111 buffer = queue->bufs[queue->next_buf_to_fill]; 4112 /* 4113 * check if buffer is empty to make sure that we do not 'overtake' 4114 * ourselves and try to fill a buffer that is already primed 4115 */ 4116 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4117 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4118 return -EBUSY; 4119 } 4120 /* check if we need to switch packing state of this queue */ 4121 qeth_switch_to_packing_if_needed(queue); 4122 if (queue->do_pack) { 4123 do_pack = 1; 4124 /* does packet fit in current buffer? */ 4125 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4126 buffer->next_element_to_fill) < elements_needed) { 4127 /* ... no -> set state PRIMED */ 4128 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4129 flush_count++; 4130 queue->next_buf_to_fill = 4131 (queue->next_buf_to_fill + 1) % 4132 QDIO_MAX_BUFFERS_PER_Q; 4133 buffer = queue->bufs[queue->next_buf_to_fill]; 4134 /* we did a step forward, so check buffer state 4135 * again */ 4136 if (atomic_read(&buffer->state) != 4137 QETH_QDIO_BUF_EMPTY) { 4138 qeth_flush_buffers(queue, start_index, 4139 flush_count); 4140 atomic_set(&queue->state, 4141 QETH_OUT_Q_UNLOCKED); 4142 return -EBUSY; 4143 } 4144 } 4145 } 4146 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0); 4147 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4148 QDIO_MAX_BUFFERS_PER_Q; 4149 flush_count += tmp; 4150 if (flush_count) 4151 qeth_flush_buffers(queue, start_index, flush_count); 4152 else if (!atomic_read(&queue->set_pci_flags_count)) 4153 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4154 /* 4155 * queue->state will go from LOCKED -> UNLOCKED or from 4156 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4157 * (switch packing state or flush buffer to get another pci flag out). 4158 * In that case we will enter this loop 4159 */ 4160 while (atomic_dec_return(&queue->state)) { 4161 flush_count = 0; 4162 start_index = queue->next_buf_to_fill; 4163 /* check if we can go back to non-packing state */ 4164 flush_count += qeth_switch_to_nonpacking_if_needed(queue); 4165 /* 4166 * check if we need to flush a packing buffer to get a pci 4167 * flag out on the queue 4168 */ 4169 if (!flush_count && !atomic_read(&queue->set_pci_flags_count)) 4170 flush_count += qeth_flush_buffers_on_no_pci(queue); 4171 if (flush_count) 4172 qeth_flush_buffers(queue, start_index, flush_count); 4173 } 4174 /* at this point the queue is UNLOCKED again */ 4175 if (queue->card->options.performance_stats && do_pack) 4176 queue->card->perf_stats.bufs_sent_pack += flush_count; 4177 4178 return rc; 4179 } 4180 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4181 4182 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4183 struct qeth_reply *reply, unsigned long data) 4184 { 4185 struct qeth_ipa_cmd *cmd; 4186 struct qeth_ipacmd_setadpparms *setparms; 4187 4188 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4189 4190 cmd = (struct qeth_ipa_cmd *) data; 4191 setparms = &(cmd->data.setadapterparms); 4192 4193 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4194 if (cmd->hdr.return_code) { 4195 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4196 setparms->data.mode = SET_PROMISC_MODE_OFF; 4197 } 4198 card->info.promisc_mode = setparms->data.mode; 4199 return 0; 4200 } 4201 4202 void qeth_setadp_promisc_mode(struct qeth_card *card) 4203 { 4204 enum qeth_ipa_promisc_modes mode; 4205 struct net_device *dev = card->dev; 4206 struct qeth_cmd_buffer *iob; 4207 struct qeth_ipa_cmd *cmd; 4208 4209 QETH_CARD_TEXT(card, 4, "setprom"); 4210 4211 if (((dev->flags & IFF_PROMISC) && 4212 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4213 (!(dev->flags & IFF_PROMISC) && 4214 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4215 return; 4216 mode = SET_PROMISC_MODE_OFF; 4217 if (dev->flags & IFF_PROMISC) 4218 mode = SET_PROMISC_MODE_ON; 4219 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4220 4221 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4222 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4223 if (!iob) 4224 return; 4225 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4226 cmd->data.setadapterparms.data.mode = mode; 4227 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4228 } 4229 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4230 4231 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4232 { 4233 struct qeth_card *card; 4234 char dbf_text[15]; 4235 4236 card = dev->ml_priv; 4237 4238 QETH_CARD_TEXT(card, 4, "chgmtu"); 4239 sprintf(dbf_text, "%8x", new_mtu); 4240 QETH_CARD_TEXT(card, 4, dbf_text); 4241 4242 if (new_mtu < 64) 4243 return -EINVAL; 4244 if (new_mtu > 65535) 4245 return -EINVAL; 4246 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) && 4247 (!qeth_mtu_is_valid(card, new_mtu))) 4248 return -EINVAL; 4249 dev->mtu = new_mtu; 4250 return 0; 4251 } 4252 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4253 4254 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4255 { 4256 struct qeth_card *card; 4257 4258 card = dev->ml_priv; 4259 4260 QETH_CARD_TEXT(card, 5, "getstat"); 4261 4262 return &card->stats; 4263 } 4264 EXPORT_SYMBOL_GPL(qeth_get_stats); 4265 4266 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4267 struct qeth_reply *reply, unsigned long data) 4268 { 4269 struct qeth_ipa_cmd *cmd; 4270 4271 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4272 4273 cmd = (struct qeth_ipa_cmd *) data; 4274 if (!card->options.layer2 || 4275 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4276 memcpy(card->dev->dev_addr, 4277 &cmd->data.setadapterparms.data.change_addr.addr, 4278 OSA_ADDR_LEN); 4279 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4280 } 4281 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4282 return 0; 4283 } 4284 4285 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4286 { 4287 int rc; 4288 struct qeth_cmd_buffer *iob; 4289 struct qeth_ipa_cmd *cmd; 4290 4291 QETH_CARD_TEXT(card, 4, "chgmac"); 4292 4293 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4294 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4295 sizeof(struct qeth_change_addr)); 4296 if (!iob) 4297 return -ENOMEM; 4298 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4299 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4300 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; 4301 memcpy(&cmd->data.setadapterparms.data.change_addr.addr, 4302 card->dev->dev_addr, OSA_ADDR_LEN); 4303 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4304 NULL); 4305 return rc; 4306 } 4307 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4308 4309 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4310 struct qeth_reply *reply, unsigned long data) 4311 { 4312 struct qeth_ipa_cmd *cmd; 4313 struct qeth_set_access_ctrl *access_ctrl_req; 4314 int fallback = *(int *)reply->param; 4315 4316 QETH_CARD_TEXT(card, 4, "setaccb"); 4317 4318 cmd = (struct qeth_ipa_cmd *) data; 4319 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4320 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4321 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4322 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4323 cmd->data.setadapterparms.hdr.return_code); 4324 if (cmd->data.setadapterparms.hdr.return_code != 4325 SET_ACCESS_CTRL_RC_SUCCESS) 4326 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4327 card->gdev->dev.kobj.name, 4328 access_ctrl_req->subcmd_code, 4329 cmd->data.setadapterparms.hdr.return_code); 4330 switch (cmd->data.setadapterparms.hdr.return_code) { 4331 case SET_ACCESS_CTRL_RC_SUCCESS: 4332 if (card->options.isolation == ISOLATION_MODE_NONE) { 4333 dev_info(&card->gdev->dev, 4334 "QDIO data connection isolation is deactivated\n"); 4335 } else { 4336 dev_info(&card->gdev->dev, 4337 "QDIO data connection isolation is activated\n"); 4338 } 4339 break; 4340 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4341 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4342 "deactivated\n", dev_name(&card->gdev->dev)); 4343 if (fallback) 4344 card->options.isolation = card->options.prev_isolation; 4345 break; 4346 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4347 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4348 " activated\n", dev_name(&card->gdev->dev)); 4349 if (fallback) 4350 card->options.isolation = card->options.prev_isolation; 4351 break; 4352 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4353 dev_err(&card->gdev->dev, "Adapter does not " 4354 "support QDIO data connection isolation\n"); 4355 break; 4356 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4357 dev_err(&card->gdev->dev, 4358 "Adapter is dedicated. " 4359 "QDIO data connection isolation not supported\n"); 4360 if (fallback) 4361 card->options.isolation = card->options.prev_isolation; 4362 break; 4363 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4364 dev_err(&card->gdev->dev, 4365 "TSO does not permit QDIO data connection isolation\n"); 4366 if (fallback) 4367 card->options.isolation = card->options.prev_isolation; 4368 break; 4369 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4370 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4371 "support reflective relay mode\n"); 4372 if (fallback) 4373 card->options.isolation = card->options.prev_isolation; 4374 break; 4375 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4376 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4377 "enabled at the adjacent switch port"); 4378 if (fallback) 4379 card->options.isolation = card->options.prev_isolation; 4380 break; 4381 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4382 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4383 "at the adjacent switch failed\n"); 4384 break; 4385 default: 4386 /* this should never happen */ 4387 if (fallback) 4388 card->options.isolation = card->options.prev_isolation; 4389 break; 4390 } 4391 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4392 return 0; 4393 } 4394 4395 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4396 enum qeth_ipa_isolation_modes isolation, int fallback) 4397 { 4398 int rc; 4399 struct qeth_cmd_buffer *iob; 4400 struct qeth_ipa_cmd *cmd; 4401 struct qeth_set_access_ctrl *access_ctrl_req; 4402 4403 QETH_CARD_TEXT(card, 4, "setacctl"); 4404 4405 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4406 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4407 4408 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4409 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4410 sizeof(struct qeth_set_access_ctrl)); 4411 if (!iob) 4412 return -ENOMEM; 4413 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4414 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4415 access_ctrl_req->subcmd_code = isolation; 4416 4417 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4418 &fallback); 4419 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4420 return rc; 4421 } 4422 4423 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4424 { 4425 int rc = 0; 4426 4427 QETH_CARD_TEXT(card, 4, "setactlo"); 4428 4429 if ((card->info.type == QETH_CARD_TYPE_OSD || 4430 card->info.type == QETH_CARD_TYPE_OSX) && 4431 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4432 rc = qeth_setadpparms_set_access_ctrl(card, 4433 card->options.isolation, fallback); 4434 if (rc) { 4435 QETH_DBF_MESSAGE(3, 4436 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4437 card->gdev->dev.kobj.name, 4438 rc); 4439 rc = -EOPNOTSUPP; 4440 } 4441 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4442 card->options.isolation = ISOLATION_MODE_NONE; 4443 4444 dev_err(&card->gdev->dev, "Adapter does not " 4445 "support QDIO data connection isolation\n"); 4446 rc = -EOPNOTSUPP; 4447 } 4448 return rc; 4449 } 4450 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4451 4452 void qeth_tx_timeout(struct net_device *dev) 4453 { 4454 struct qeth_card *card; 4455 4456 card = dev->ml_priv; 4457 QETH_CARD_TEXT(card, 4, "txtimeo"); 4458 card->stats.tx_errors++; 4459 qeth_schedule_recovery(card); 4460 } 4461 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4462 4463 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4464 { 4465 struct qeth_card *card = dev->ml_priv; 4466 int rc = 0; 4467 4468 switch (regnum) { 4469 case MII_BMCR: /* Basic mode control register */ 4470 rc = BMCR_FULLDPLX; 4471 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4472 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4473 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4474 rc |= BMCR_SPEED100; 4475 break; 4476 case MII_BMSR: /* Basic mode status register */ 4477 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4478 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4479 BMSR_100BASE4; 4480 break; 4481 case MII_PHYSID1: /* PHYS ID 1 */ 4482 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4483 dev->dev_addr[2]; 4484 rc = (rc >> 5) & 0xFFFF; 4485 break; 4486 case MII_PHYSID2: /* PHYS ID 2 */ 4487 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4488 break; 4489 case MII_ADVERTISE: /* Advertisement control reg */ 4490 rc = ADVERTISE_ALL; 4491 break; 4492 case MII_LPA: /* Link partner ability reg */ 4493 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4494 LPA_100BASE4 | LPA_LPACK; 4495 break; 4496 case MII_EXPANSION: /* Expansion register */ 4497 break; 4498 case MII_DCOUNTER: /* disconnect counter */ 4499 break; 4500 case MII_FCSCOUNTER: /* false carrier counter */ 4501 break; 4502 case MII_NWAYTEST: /* N-way auto-neg test register */ 4503 break; 4504 case MII_RERRCOUNTER: /* rx error counter */ 4505 rc = card->stats.rx_errors; 4506 break; 4507 case MII_SREVISION: /* silicon revision */ 4508 break; 4509 case MII_RESV1: /* reserved 1 */ 4510 break; 4511 case MII_LBRERROR: /* loopback, rx, bypass error */ 4512 break; 4513 case MII_PHYADDR: /* physical address */ 4514 break; 4515 case MII_RESV2: /* reserved 2 */ 4516 break; 4517 case MII_TPISTATUS: /* TPI status for 10mbps */ 4518 break; 4519 case MII_NCONFIG: /* network interface config */ 4520 break; 4521 default: 4522 break; 4523 } 4524 return rc; 4525 } 4526 EXPORT_SYMBOL_GPL(qeth_mdio_read); 4527 4528 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4529 struct qeth_cmd_buffer *iob, int len, 4530 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4531 unsigned long), 4532 void *reply_param) 4533 { 4534 u16 s1, s2; 4535 4536 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4537 4538 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4539 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4540 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4541 /* adjust PDU length fields in IPA_PDU_HEADER */ 4542 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4543 s2 = (u32) len; 4544 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4545 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4546 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4547 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4548 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4549 reply_cb, reply_param); 4550 } 4551 4552 static int qeth_snmp_command_cb(struct qeth_card *card, 4553 struct qeth_reply *reply, unsigned long sdata) 4554 { 4555 struct qeth_ipa_cmd *cmd; 4556 struct qeth_arp_query_info *qinfo; 4557 struct qeth_snmp_cmd *snmp; 4558 unsigned char *data; 4559 __u16 data_len; 4560 4561 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4562 4563 cmd = (struct qeth_ipa_cmd *) sdata; 4564 data = (unsigned char *)((char *)cmd - reply->offset); 4565 qinfo = (struct qeth_arp_query_info *) reply->param; 4566 snmp = &cmd->data.setadapterparms.data.snmp; 4567 4568 if (cmd->hdr.return_code) { 4569 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4570 return 0; 4571 } 4572 if (cmd->data.setadapterparms.hdr.return_code) { 4573 cmd->hdr.return_code = 4574 cmd->data.setadapterparms.hdr.return_code; 4575 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4576 return 0; 4577 } 4578 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4579 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4580 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4581 else 4582 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4583 4584 /* check if there is enough room in userspace */ 4585 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4586 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4587 cmd->hdr.return_code = IPA_RC_ENOMEM; 4588 return 0; 4589 } 4590 QETH_CARD_TEXT_(card, 4, "snore%i", 4591 cmd->data.setadapterparms.hdr.used_total); 4592 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4593 cmd->data.setadapterparms.hdr.seq_no); 4594 /*copy entries to user buffer*/ 4595 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4596 memcpy(qinfo->udata + qinfo->udata_offset, 4597 (char *)snmp, 4598 data_len + offsetof(struct qeth_snmp_cmd, data)); 4599 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4600 } else { 4601 memcpy(qinfo->udata + qinfo->udata_offset, 4602 (char *)&snmp->request, data_len); 4603 } 4604 qinfo->udata_offset += data_len; 4605 /* check if all replies received ... */ 4606 QETH_CARD_TEXT_(card, 4, "srtot%i", 4607 cmd->data.setadapterparms.hdr.used_total); 4608 QETH_CARD_TEXT_(card, 4, "srseq%i", 4609 cmd->data.setadapterparms.hdr.seq_no); 4610 if (cmd->data.setadapterparms.hdr.seq_no < 4611 cmd->data.setadapterparms.hdr.used_total) 4612 return 1; 4613 return 0; 4614 } 4615 4616 int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4617 { 4618 struct qeth_cmd_buffer *iob; 4619 struct qeth_ipa_cmd *cmd; 4620 struct qeth_snmp_ureq *ureq; 4621 unsigned int req_len; 4622 struct qeth_arp_query_info qinfo = {0, }; 4623 int rc = 0; 4624 4625 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4626 4627 if (card->info.guestlan) 4628 return -EOPNOTSUPP; 4629 4630 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4631 (!card->options.layer2)) { 4632 return -EOPNOTSUPP; 4633 } 4634 /* skip 4 bytes (data_len struct member) to get req_len */ 4635 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4636 return -EFAULT; 4637 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4638 sizeof(struct qeth_ipacmd_hdr) - 4639 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4640 return -EINVAL; 4641 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4642 if (IS_ERR(ureq)) { 4643 QETH_CARD_TEXT(card, 2, "snmpnome"); 4644 return PTR_ERR(ureq); 4645 } 4646 qinfo.udata_len = ureq->hdr.data_len; 4647 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4648 if (!qinfo.udata) { 4649 kfree(ureq); 4650 return -ENOMEM; 4651 } 4652 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4653 4654 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4655 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4656 if (!iob) { 4657 rc = -ENOMEM; 4658 goto out; 4659 } 4660 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4661 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4662 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4663 qeth_snmp_command_cb, (void *)&qinfo); 4664 if (rc) 4665 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4666 QETH_CARD_IFNAME(card), rc); 4667 else { 4668 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4669 rc = -EFAULT; 4670 } 4671 out: 4672 kfree(ureq); 4673 kfree(qinfo.udata); 4674 return rc; 4675 } 4676 EXPORT_SYMBOL_GPL(qeth_snmp_command); 4677 4678 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4679 struct qeth_reply *reply, unsigned long data) 4680 { 4681 struct qeth_ipa_cmd *cmd; 4682 struct qeth_qoat_priv *priv; 4683 char *resdata; 4684 int resdatalen; 4685 4686 QETH_CARD_TEXT(card, 3, "qoatcb"); 4687 4688 cmd = (struct qeth_ipa_cmd *)data; 4689 priv = (struct qeth_qoat_priv *)reply->param; 4690 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4691 resdata = (char *)data + 28; 4692 4693 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4694 cmd->hdr.return_code = IPA_RC_FFFF; 4695 return 0; 4696 } 4697 4698 memcpy((priv->buffer + priv->response_len), resdata, 4699 resdatalen); 4700 priv->response_len += resdatalen; 4701 4702 if (cmd->data.setadapterparms.hdr.seq_no < 4703 cmd->data.setadapterparms.hdr.used_total) 4704 return 1; 4705 return 0; 4706 } 4707 4708 int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4709 { 4710 int rc = 0; 4711 struct qeth_cmd_buffer *iob; 4712 struct qeth_ipa_cmd *cmd; 4713 struct qeth_query_oat *oat_req; 4714 struct qeth_query_oat_data oat_data; 4715 struct qeth_qoat_priv priv; 4716 void __user *tmp; 4717 4718 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4719 4720 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4721 rc = -EOPNOTSUPP; 4722 goto out; 4723 } 4724 4725 if (copy_from_user(&oat_data, udata, 4726 sizeof(struct qeth_query_oat_data))) { 4727 rc = -EFAULT; 4728 goto out; 4729 } 4730 4731 priv.buffer_len = oat_data.buffer_len; 4732 priv.response_len = 0; 4733 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4734 if (!priv.buffer) { 4735 rc = -ENOMEM; 4736 goto out; 4737 } 4738 4739 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4740 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4741 sizeof(struct qeth_query_oat)); 4742 if (!iob) { 4743 rc = -ENOMEM; 4744 goto out_free; 4745 } 4746 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4747 oat_req = &cmd->data.setadapterparms.data.query_oat; 4748 oat_req->subcmd_code = oat_data.command; 4749 4750 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4751 &priv); 4752 if (!rc) { 4753 if (is_compat_task()) 4754 tmp = compat_ptr(oat_data.ptr); 4755 else 4756 tmp = (void __user *)(unsigned long)oat_data.ptr; 4757 4758 if (copy_to_user(tmp, priv.buffer, 4759 priv.response_len)) { 4760 rc = -EFAULT; 4761 goto out_free; 4762 } 4763 4764 oat_data.response_len = priv.response_len; 4765 4766 if (copy_to_user(udata, &oat_data, 4767 sizeof(struct qeth_query_oat_data))) 4768 rc = -EFAULT; 4769 } else 4770 if (rc == IPA_RC_FFFF) 4771 rc = -EFAULT; 4772 4773 out_free: 4774 kfree(priv.buffer); 4775 out: 4776 return rc; 4777 } 4778 EXPORT_SYMBOL_GPL(qeth_query_oat_command); 4779 4780 static int qeth_query_card_info_cb(struct qeth_card *card, 4781 struct qeth_reply *reply, unsigned long data) 4782 { 4783 struct qeth_ipa_cmd *cmd; 4784 struct qeth_query_card_info *card_info; 4785 struct carrier_info *carrier_info; 4786 4787 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4788 carrier_info = (struct carrier_info *)reply->param; 4789 cmd = (struct qeth_ipa_cmd *)data; 4790 card_info = &cmd->data.setadapterparms.data.card_info; 4791 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4792 carrier_info->card_type = card_info->card_type; 4793 carrier_info->port_mode = card_info->port_mode; 4794 carrier_info->port_speed = card_info->port_speed; 4795 } 4796 4797 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4798 return 0; 4799 } 4800 4801 static int qeth_query_card_info(struct qeth_card *card, 4802 struct carrier_info *carrier_info) 4803 { 4804 struct qeth_cmd_buffer *iob; 4805 4806 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4807 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4808 return -EOPNOTSUPP; 4809 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4810 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4811 if (!iob) 4812 return -ENOMEM; 4813 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4814 (void *)carrier_info); 4815 } 4816 4817 static inline int qeth_get_qdio_q_format(struct qeth_card *card) 4818 { 4819 switch (card->info.type) { 4820 case QETH_CARD_TYPE_IQD: 4821 return 2; 4822 default: 4823 return 0; 4824 } 4825 } 4826 4827 static void qeth_determine_capabilities(struct qeth_card *card) 4828 { 4829 int rc; 4830 int length; 4831 char *prcd; 4832 struct ccw_device *ddev; 4833 int ddev_offline = 0; 4834 4835 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4836 ddev = CARD_DDEV(card); 4837 if (!ddev->online) { 4838 ddev_offline = 1; 4839 rc = ccw_device_set_online(ddev); 4840 if (rc) { 4841 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4842 goto out; 4843 } 4844 } 4845 4846 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4847 if (rc) { 4848 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4849 dev_name(&card->gdev->dev), rc); 4850 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4851 goto out_offline; 4852 } 4853 qeth_configure_unitaddr(card, prcd); 4854 if (ddev_offline) 4855 qeth_configure_blkt_default(card, prcd); 4856 kfree(prcd); 4857 4858 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4859 if (rc) 4860 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4861 4862 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4863 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1); 4864 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3); 4865 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4866 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4867 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4868 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4869 dev_info(&card->gdev->dev, 4870 "Completion Queueing supported\n"); 4871 } else { 4872 card->options.cq = QETH_CQ_NOTAVAILABLE; 4873 } 4874 4875 4876 out_offline: 4877 if (ddev_offline == 1) 4878 ccw_device_set_offline(ddev); 4879 out: 4880 return; 4881 } 4882 4883 static inline void qeth_qdio_establish_cq(struct qeth_card *card, 4884 struct qdio_buffer **in_sbal_ptrs, 4885 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) { 4886 int i; 4887 4888 if (card->options.cq == QETH_CQ_ENABLED) { 4889 int offset = QDIO_MAX_BUFFERS_PER_Q * 4890 (card->qdio.no_in_queues - 1); 4891 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1); 4892 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4893 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4894 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4895 } 4896 4897 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4898 } 4899 } 4900 4901 static int qeth_qdio_establish(struct qeth_card *card) 4902 { 4903 struct qdio_initialize init_data; 4904 char *qib_param_field; 4905 struct qdio_buffer **in_sbal_ptrs; 4906 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4907 struct qdio_buffer **out_sbal_ptrs; 4908 int i, j, k; 4909 int rc = 0; 4910 4911 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4912 4913 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4914 GFP_KERNEL); 4915 if (!qib_param_field) { 4916 rc = -ENOMEM; 4917 goto out_free_nothing; 4918 } 4919 4920 qeth_create_qib_param_field(card, qib_param_field); 4921 qeth_create_qib_param_field_blkt(card, qib_param_field); 4922 4923 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4924 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4925 GFP_KERNEL); 4926 if (!in_sbal_ptrs) { 4927 rc = -ENOMEM; 4928 goto out_free_qib_param; 4929 } 4930 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4931 in_sbal_ptrs[i] = (struct qdio_buffer *) 4932 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4933 } 4934 4935 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 4936 GFP_KERNEL); 4937 if (!queue_start_poll) { 4938 rc = -ENOMEM; 4939 goto out_free_in_sbals; 4940 } 4941 for (i = 0; i < card->qdio.no_in_queues; ++i) 4942 queue_start_poll[i] = card->discipline->start_poll; 4943 4944 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4945 4946 out_sbal_ptrs = 4947 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 4948 sizeof(void *), GFP_KERNEL); 4949 if (!out_sbal_ptrs) { 4950 rc = -ENOMEM; 4951 goto out_free_queue_start_poll; 4952 } 4953 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4954 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4955 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4956 card->qdio.out_qs[i]->bufs[j]->buffer); 4957 } 4958 4959 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4960 init_data.cdev = CARD_DDEV(card); 4961 init_data.q_format = qeth_get_qdio_q_format(card); 4962 init_data.qib_param_field_format = 0; 4963 init_data.qib_param_field = qib_param_field; 4964 init_data.no_input_qs = card->qdio.no_in_queues; 4965 init_data.no_output_qs = card->qdio.no_out_queues; 4966 init_data.input_handler = card->discipline->input_handler; 4967 init_data.output_handler = card->discipline->output_handler; 4968 init_data.queue_start_poll_array = queue_start_poll; 4969 init_data.int_parm = (unsigned long) card; 4970 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 4971 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 4972 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4973 init_data.scan_threshold = 4974 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 4975 4976 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4977 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4978 rc = qdio_allocate(&init_data); 4979 if (rc) { 4980 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4981 goto out; 4982 } 4983 rc = qdio_establish(&init_data); 4984 if (rc) { 4985 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4986 qdio_free(CARD_DDEV(card)); 4987 } 4988 } 4989 4990 switch (card->options.cq) { 4991 case QETH_CQ_ENABLED: 4992 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4993 break; 4994 case QETH_CQ_DISABLED: 4995 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4996 break; 4997 default: 4998 break; 4999 } 5000 out: 5001 kfree(out_sbal_ptrs); 5002 out_free_queue_start_poll: 5003 kfree(queue_start_poll); 5004 out_free_in_sbals: 5005 kfree(in_sbal_ptrs); 5006 out_free_qib_param: 5007 kfree(qib_param_field); 5008 out_free_nothing: 5009 return rc; 5010 } 5011 5012 static void qeth_core_free_card(struct qeth_card *card) 5013 { 5014 5015 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5016 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5017 qeth_clean_channel(&card->read); 5018 qeth_clean_channel(&card->write); 5019 if (card->dev) 5020 free_netdev(card->dev); 5021 kfree(card->ip_tbd_list); 5022 qeth_free_qdio_buffers(card); 5023 unregister_service_level(&card->qeth_service_level); 5024 kfree(card); 5025 } 5026 5027 void qeth_trace_features(struct qeth_card *card) 5028 { 5029 QETH_CARD_TEXT(card, 2, "features"); 5030 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs); 5031 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs); 5032 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs); 5033 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs); 5034 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs); 5035 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs); 5036 QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support); 5037 } 5038 EXPORT_SYMBOL_GPL(qeth_trace_features); 5039 5040 static struct ccw_device_id qeth_ids[] = { 5041 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5042 .driver_info = QETH_CARD_TYPE_OSD}, 5043 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5044 .driver_info = QETH_CARD_TYPE_IQD}, 5045 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5046 .driver_info = QETH_CARD_TYPE_OSN}, 5047 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5048 .driver_info = QETH_CARD_TYPE_OSM}, 5049 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5050 .driver_info = QETH_CARD_TYPE_OSX}, 5051 {}, 5052 }; 5053 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5054 5055 static struct ccw_driver qeth_ccw_driver = { 5056 .driver = { 5057 .owner = THIS_MODULE, 5058 .name = "qeth", 5059 }, 5060 .ids = qeth_ids, 5061 .probe = ccwgroup_probe_ccwdev, 5062 .remove = ccwgroup_remove_ccwdev, 5063 }; 5064 5065 int qeth_core_hardsetup_card(struct qeth_card *card) 5066 { 5067 int retries = 3; 5068 int rc; 5069 5070 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5071 atomic_set(&card->force_alloc_skb, 0); 5072 qeth_update_from_chp_desc(card); 5073 retry: 5074 if (retries < 3) 5075 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5076 dev_name(&card->gdev->dev)); 5077 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5078 ccw_device_set_offline(CARD_DDEV(card)); 5079 ccw_device_set_offline(CARD_WDEV(card)); 5080 ccw_device_set_offline(CARD_RDEV(card)); 5081 qdio_free(CARD_DDEV(card)); 5082 rc = ccw_device_set_online(CARD_RDEV(card)); 5083 if (rc) 5084 goto retriable; 5085 rc = ccw_device_set_online(CARD_WDEV(card)); 5086 if (rc) 5087 goto retriable; 5088 rc = ccw_device_set_online(CARD_DDEV(card)); 5089 if (rc) 5090 goto retriable; 5091 retriable: 5092 if (rc == -ERESTARTSYS) { 5093 QETH_DBF_TEXT(SETUP, 2, "break1"); 5094 return rc; 5095 } else if (rc) { 5096 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5097 if (--retries < 0) 5098 goto out; 5099 else 5100 goto retry; 5101 } 5102 qeth_determine_capabilities(card); 5103 qeth_init_tokens(card); 5104 qeth_init_func_level(card); 5105 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5106 if (rc == -ERESTARTSYS) { 5107 QETH_DBF_TEXT(SETUP, 2, "break2"); 5108 return rc; 5109 } else if (rc) { 5110 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5111 if (--retries < 0) 5112 goto out; 5113 else 5114 goto retry; 5115 } 5116 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5117 if (rc == -ERESTARTSYS) { 5118 QETH_DBF_TEXT(SETUP, 2, "break3"); 5119 return rc; 5120 } else if (rc) { 5121 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5122 if (--retries < 0) 5123 goto out; 5124 else 5125 goto retry; 5126 } 5127 card->read_or_write_problem = 0; 5128 rc = qeth_mpc_initialize(card); 5129 if (rc) { 5130 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5131 goto out; 5132 } 5133 5134 card->options.ipa4.supported_funcs = 0; 5135 card->options.adp.supported_funcs = 0; 5136 card->options.sbp.supported_funcs = 0; 5137 card->info.diagass_support = 0; 5138 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5139 if (rc == -ENOMEM) 5140 goto out; 5141 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5142 rc = qeth_query_setadapterparms(card); 5143 if (rc < 0) { 5144 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5145 goto out; 5146 } 5147 } 5148 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5149 rc = qeth_query_setdiagass(card); 5150 if (rc < 0) { 5151 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5152 goto out; 5153 } 5154 } 5155 return 0; 5156 out: 5157 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5158 "an error on the device\n"); 5159 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5160 dev_name(&card->gdev->dev), rc); 5161 return rc; 5162 } 5163 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5164 5165 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer, 5166 struct qdio_buffer_element *element, 5167 struct sk_buff **pskb, int offset, int *pfrag, int data_len) 5168 { 5169 struct page *page = virt_to_page(element->addr); 5170 if (*pskb == NULL) { 5171 if (qethbuffer->rx_skb) { 5172 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */ 5173 *pskb = qethbuffer->rx_skb; 5174 qethbuffer->rx_skb = NULL; 5175 } else { 5176 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 5177 if (!(*pskb)) 5178 return -ENOMEM; 5179 } 5180 5181 skb_reserve(*pskb, ETH_HLEN); 5182 if (data_len <= QETH_RX_PULL_LEN) { 5183 memcpy(skb_put(*pskb, data_len), element->addr + offset, 5184 data_len); 5185 } else { 5186 get_page(page); 5187 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN), 5188 element->addr + offset, QETH_RX_PULL_LEN); 5189 skb_fill_page_desc(*pskb, *pfrag, page, 5190 offset + QETH_RX_PULL_LEN, 5191 data_len - QETH_RX_PULL_LEN); 5192 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN; 5193 (*pskb)->len += data_len - QETH_RX_PULL_LEN; 5194 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN; 5195 (*pfrag)++; 5196 } 5197 } else { 5198 get_page(page); 5199 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len); 5200 (*pskb)->data_len += data_len; 5201 (*pskb)->len += data_len; 5202 (*pskb)->truesize += data_len; 5203 (*pfrag)++; 5204 } 5205 5206 5207 return 0; 5208 } 5209 5210 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5211 { 5212 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5213 } 5214 5215 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5216 struct qeth_qdio_buffer *qethbuffer, 5217 struct qdio_buffer_element **__element, int *__offset, 5218 struct qeth_hdr **hdr) 5219 { 5220 struct qdio_buffer_element *element = *__element; 5221 struct qdio_buffer *buffer = qethbuffer->buffer; 5222 int offset = *__offset; 5223 struct sk_buff *skb = NULL; 5224 int skb_len = 0; 5225 void *data_ptr; 5226 int data_len; 5227 int headroom = 0; 5228 int use_rx_sg = 0; 5229 int frag = 0; 5230 5231 /* qeth_hdr must not cross element boundaries */ 5232 if (element->length < offset + sizeof(struct qeth_hdr)) { 5233 if (qeth_is_last_sbale(element)) 5234 return NULL; 5235 element++; 5236 offset = 0; 5237 if (element->length < sizeof(struct qeth_hdr)) 5238 return NULL; 5239 } 5240 *hdr = element->addr + offset; 5241 5242 offset += sizeof(struct qeth_hdr); 5243 switch ((*hdr)->hdr.l2.id) { 5244 case QETH_HEADER_TYPE_LAYER2: 5245 skb_len = (*hdr)->hdr.l2.pkt_length; 5246 break; 5247 case QETH_HEADER_TYPE_LAYER3: 5248 skb_len = (*hdr)->hdr.l3.length; 5249 headroom = ETH_HLEN; 5250 break; 5251 case QETH_HEADER_TYPE_OSN: 5252 skb_len = (*hdr)->hdr.osn.pdu_length; 5253 headroom = sizeof(struct qeth_hdr); 5254 break; 5255 default: 5256 break; 5257 } 5258 5259 if (!skb_len) 5260 return NULL; 5261 5262 if (((skb_len >= card->options.rx_sg_cb) && 5263 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5264 (!atomic_read(&card->force_alloc_skb))) || 5265 (card->options.cq == QETH_CQ_ENABLED)) { 5266 use_rx_sg = 1; 5267 } else { 5268 skb = dev_alloc_skb(skb_len + headroom); 5269 if (!skb) 5270 goto no_mem; 5271 if (headroom) 5272 skb_reserve(skb, headroom); 5273 } 5274 5275 data_ptr = element->addr + offset; 5276 while (skb_len) { 5277 data_len = min(skb_len, (int)(element->length - offset)); 5278 if (data_len) { 5279 if (use_rx_sg) { 5280 if (qeth_create_skb_frag(qethbuffer, element, 5281 &skb, offset, &frag, data_len)) 5282 goto no_mem; 5283 } else { 5284 memcpy(skb_put(skb, data_len), data_ptr, 5285 data_len); 5286 } 5287 } 5288 skb_len -= data_len; 5289 if (skb_len) { 5290 if (qeth_is_last_sbale(element)) { 5291 QETH_CARD_TEXT(card, 4, "unexeob"); 5292 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5293 dev_kfree_skb_any(skb); 5294 card->stats.rx_errors++; 5295 return NULL; 5296 } 5297 element++; 5298 offset = 0; 5299 data_ptr = element->addr; 5300 } else { 5301 offset += data_len; 5302 } 5303 } 5304 *__element = element; 5305 *__offset = offset; 5306 if (use_rx_sg && card->options.performance_stats) { 5307 card->perf_stats.sg_skbs_rx++; 5308 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5309 } 5310 return skb; 5311 no_mem: 5312 if (net_ratelimit()) { 5313 QETH_CARD_TEXT(card, 2, "noskbmem"); 5314 } 5315 card->stats.rx_dropped++; 5316 return NULL; 5317 } 5318 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5319 5320 static void qeth_unregister_dbf_views(void) 5321 { 5322 int x; 5323 for (x = 0; x < QETH_DBF_INFOS; x++) { 5324 debug_unregister(qeth_dbf[x].id); 5325 qeth_dbf[x].id = NULL; 5326 } 5327 } 5328 5329 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5330 { 5331 char dbf_txt_buf[32]; 5332 va_list args; 5333 5334 if (!debug_level_enabled(id, level)) 5335 return; 5336 va_start(args, fmt); 5337 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5338 va_end(args); 5339 debug_text_event(id, level, dbf_txt_buf); 5340 } 5341 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5342 5343 static int qeth_register_dbf_views(void) 5344 { 5345 int ret; 5346 int x; 5347 5348 for (x = 0; x < QETH_DBF_INFOS; x++) { 5349 /* register the areas */ 5350 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5351 qeth_dbf[x].pages, 5352 qeth_dbf[x].areas, 5353 qeth_dbf[x].len); 5354 if (qeth_dbf[x].id == NULL) { 5355 qeth_unregister_dbf_views(); 5356 return -ENOMEM; 5357 } 5358 5359 /* register a view */ 5360 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5361 if (ret) { 5362 qeth_unregister_dbf_views(); 5363 return ret; 5364 } 5365 5366 /* set a passing level */ 5367 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5368 } 5369 5370 return 0; 5371 } 5372 5373 int qeth_core_load_discipline(struct qeth_card *card, 5374 enum qeth_discipline_id discipline) 5375 { 5376 int rc = 0; 5377 mutex_lock(&qeth_mod_mutex); 5378 switch (discipline) { 5379 case QETH_DISCIPLINE_LAYER3: 5380 card->discipline = try_then_request_module( 5381 symbol_get(qeth_l3_discipline), "qeth_l3"); 5382 break; 5383 case QETH_DISCIPLINE_LAYER2: 5384 card->discipline = try_then_request_module( 5385 symbol_get(qeth_l2_discipline), "qeth_l2"); 5386 break; 5387 } 5388 if (!card->discipline) { 5389 dev_err(&card->gdev->dev, "There is no kernel module to " 5390 "support discipline %d\n", discipline); 5391 rc = -EINVAL; 5392 } 5393 mutex_unlock(&qeth_mod_mutex); 5394 return rc; 5395 } 5396 5397 void qeth_core_free_discipline(struct qeth_card *card) 5398 { 5399 if (card->options.layer2) 5400 symbol_put(qeth_l2_discipline); 5401 else 5402 symbol_put(qeth_l3_discipline); 5403 card->discipline = NULL; 5404 } 5405 5406 static const struct device_type qeth_generic_devtype = { 5407 .name = "qeth_generic", 5408 .groups = qeth_generic_attr_groups, 5409 }; 5410 static const struct device_type qeth_osn_devtype = { 5411 .name = "qeth_osn", 5412 .groups = qeth_osn_attr_groups, 5413 }; 5414 5415 #define DBF_NAME_LEN 20 5416 5417 struct qeth_dbf_entry { 5418 char dbf_name[DBF_NAME_LEN]; 5419 debug_info_t *dbf_info; 5420 struct list_head dbf_list; 5421 }; 5422 5423 static LIST_HEAD(qeth_dbf_list); 5424 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5425 5426 static debug_info_t *qeth_get_dbf_entry(char *name) 5427 { 5428 struct qeth_dbf_entry *entry; 5429 debug_info_t *rc = NULL; 5430 5431 mutex_lock(&qeth_dbf_list_mutex); 5432 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5433 if (strcmp(entry->dbf_name, name) == 0) { 5434 rc = entry->dbf_info; 5435 break; 5436 } 5437 } 5438 mutex_unlock(&qeth_dbf_list_mutex); 5439 return rc; 5440 } 5441 5442 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5443 { 5444 struct qeth_dbf_entry *new_entry; 5445 5446 card->debug = debug_register(name, 2, 1, 8); 5447 if (!card->debug) { 5448 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5449 goto err; 5450 } 5451 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5452 goto err_dbg; 5453 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5454 if (!new_entry) 5455 goto err_dbg; 5456 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5457 new_entry->dbf_info = card->debug; 5458 mutex_lock(&qeth_dbf_list_mutex); 5459 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5460 mutex_unlock(&qeth_dbf_list_mutex); 5461 5462 return 0; 5463 5464 err_dbg: 5465 debug_unregister(card->debug); 5466 err: 5467 return -ENOMEM; 5468 } 5469 5470 static void qeth_clear_dbf_list(void) 5471 { 5472 struct qeth_dbf_entry *entry, *tmp; 5473 5474 mutex_lock(&qeth_dbf_list_mutex); 5475 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5476 list_del(&entry->dbf_list); 5477 debug_unregister(entry->dbf_info); 5478 kfree(entry); 5479 } 5480 mutex_unlock(&qeth_dbf_list_mutex); 5481 } 5482 5483 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5484 { 5485 struct qeth_card *card; 5486 struct device *dev; 5487 int rc; 5488 unsigned long flags; 5489 char dbf_name[DBF_NAME_LEN]; 5490 5491 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5492 5493 dev = &gdev->dev; 5494 if (!get_device(dev)) 5495 return -ENODEV; 5496 5497 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5498 5499 card = qeth_alloc_card(); 5500 if (!card) { 5501 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5502 rc = -ENOMEM; 5503 goto err_dev; 5504 } 5505 5506 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5507 dev_name(&gdev->dev)); 5508 card->debug = qeth_get_dbf_entry(dbf_name); 5509 if (!card->debug) { 5510 rc = qeth_add_dbf_entry(card, dbf_name); 5511 if (rc) 5512 goto err_card; 5513 } 5514 5515 card->read.ccwdev = gdev->cdev[0]; 5516 card->write.ccwdev = gdev->cdev[1]; 5517 card->data.ccwdev = gdev->cdev[2]; 5518 dev_set_drvdata(&gdev->dev, card); 5519 card->gdev = gdev; 5520 gdev->cdev[0]->handler = qeth_irq; 5521 gdev->cdev[1]->handler = qeth_irq; 5522 gdev->cdev[2]->handler = qeth_irq; 5523 5524 rc = qeth_determine_card_type(card); 5525 if (rc) { 5526 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5527 goto err_card; 5528 } 5529 rc = qeth_setup_card(card); 5530 if (rc) { 5531 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5532 goto err_card; 5533 } 5534 5535 if (card->info.type == QETH_CARD_TYPE_OSN) 5536 gdev->dev.type = &qeth_osn_devtype; 5537 else 5538 gdev->dev.type = &qeth_generic_devtype; 5539 5540 switch (card->info.type) { 5541 case QETH_CARD_TYPE_OSN: 5542 case QETH_CARD_TYPE_OSM: 5543 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2); 5544 if (rc) 5545 goto err_card; 5546 rc = card->discipline->setup(card->gdev); 5547 if (rc) 5548 goto err_disc; 5549 case QETH_CARD_TYPE_OSD: 5550 case QETH_CARD_TYPE_OSX: 5551 default: 5552 break; 5553 } 5554 5555 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5556 list_add_tail(&card->list, &qeth_core_card_list.list); 5557 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5558 5559 qeth_determine_capabilities(card); 5560 return 0; 5561 5562 err_disc: 5563 qeth_core_free_discipline(card); 5564 err_card: 5565 qeth_core_free_card(card); 5566 err_dev: 5567 put_device(dev); 5568 return rc; 5569 } 5570 5571 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5572 { 5573 unsigned long flags; 5574 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5575 5576 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5577 5578 if (card->discipline) { 5579 card->discipline->remove(gdev); 5580 qeth_core_free_discipline(card); 5581 } 5582 5583 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5584 list_del(&card->list); 5585 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5586 qeth_core_free_card(card); 5587 dev_set_drvdata(&gdev->dev, NULL); 5588 put_device(&gdev->dev); 5589 return; 5590 } 5591 5592 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5593 { 5594 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5595 int rc = 0; 5596 int def_discipline; 5597 5598 if (!card->discipline) { 5599 if (card->info.type == QETH_CARD_TYPE_IQD) 5600 def_discipline = QETH_DISCIPLINE_LAYER3; 5601 else 5602 def_discipline = QETH_DISCIPLINE_LAYER2; 5603 rc = qeth_core_load_discipline(card, def_discipline); 5604 if (rc) 5605 goto err; 5606 rc = card->discipline->setup(card->gdev); 5607 if (rc) 5608 goto err; 5609 } 5610 rc = card->discipline->set_online(gdev); 5611 err: 5612 return rc; 5613 } 5614 5615 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5616 { 5617 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5618 return card->discipline->set_offline(gdev); 5619 } 5620 5621 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5622 { 5623 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5624 if (card->discipline && card->discipline->shutdown) 5625 card->discipline->shutdown(gdev); 5626 } 5627 5628 static int qeth_core_prepare(struct ccwgroup_device *gdev) 5629 { 5630 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5631 if (card->discipline && card->discipline->prepare) 5632 return card->discipline->prepare(gdev); 5633 return 0; 5634 } 5635 5636 static void qeth_core_complete(struct ccwgroup_device *gdev) 5637 { 5638 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5639 if (card->discipline && card->discipline->complete) 5640 card->discipline->complete(gdev); 5641 } 5642 5643 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5644 { 5645 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5646 if (card->discipline && card->discipline->freeze) 5647 return card->discipline->freeze(gdev); 5648 return 0; 5649 } 5650 5651 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5652 { 5653 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5654 if (card->discipline && card->discipline->thaw) 5655 return card->discipline->thaw(gdev); 5656 return 0; 5657 } 5658 5659 static int qeth_core_restore(struct ccwgroup_device *gdev) 5660 { 5661 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5662 if (card->discipline && card->discipline->restore) 5663 return card->discipline->restore(gdev); 5664 return 0; 5665 } 5666 5667 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5668 .driver = { 5669 .owner = THIS_MODULE, 5670 .name = "qeth", 5671 }, 5672 .setup = qeth_core_probe_device, 5673 .remove = qeth_core_remove_device, 5674 .set_online = qeth_core_set_online, 5675 .set_offline = qeth_core_set_offline, 5676 .shutdown = qeth_core_shutdown, 5677 .prepare = qeth_core_prepare, 5678 .complete = qeth_core_complete, 5679 .freeze = qeth_core_freeze, 5680 .thaw = qeth_core_thaw, 5681 .restore = qeth_core_restore, 5682 }; 5683 5684 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv, 5685 const char *buf, size_t count) 5686 { 5687 int err; 5688 5689 err = ccwgroup_create_dev(qeth_core_root_dev, 5690 &qeth_core_ccwgroup_driver, 3, buf); 5691 5692 return err ? err : count; 5693 } 5694 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store); 5695 5696 static struct attribute *qeth_drv_attrs[] = { 5697 &driver_attr_group.attr, 5698 NULL, 5699 }; 5700 static struct attribute_group qeth_drv_attr_group = { 5701 .attrs = qeth_drv_attrs, 5702 }; 5703 static const struct attribute_group *qeth_drv_attr_groups[] = { 5704 &qeth_drv_attr_group, 5705 NULL, 5706 }; 5707 5708 static struct { 5709 const char str[ETH_GSTRING_LEN]; 5710 } qeth_ethtool_stats_keys[] = { 5711 /* 0 */{"rx skbs"}, 5712 {"rx buffers"}, 5713 {"tx skbs"}, 5714 {"tx buffers"}, 5715 {"tx skbs no packing"}, 5716 {"tx buffers no packing"}, 5717 {"tx skbs packing"}, 5718 {"tx buffers packing"}, 5719 {"tx sg skbs"}, 5720 {"tx sg frags"}, 5721 /* 10 */{"rx sg skbs"}, 5722 {"rx sg frags"}, 5723 {"rx sg page allocs"}, 5724 {"tx large kbytes"}, 5725 {"tx large count"}, 5726 {"tx pk state ch n->p"}, 5727 {"tx pk state ch p->n"}, 5728 {"tx pk watermark low"}, 5729 {"tx pk watermark high"}, 5730 {"queue 0 buffer usage"}, 5731 /* 20 */{"queue 1 buffer usage"}, 5732 {"queue 2 buffer usage"}, 5733 {"queue 3 buffer usage"}, 5734 {"rx poll time"}, 5735 {"rx poll count"}, 5736 {"rx do_QDIO time"}, 5737 {"rx do_QDIO count"}, 5738 {"tx handler time"}, 5739 {"tx handler count"}, 5740 {"tx time"}, 5741 /* 30 */{"tx count"}, 5742 {"tx do_QDIO time"}, 5743 {"tx do_QDIO count"}, 5744 {"tx csum"}, 5745 {"tx lin"}, 5746 {"cq handler count"}, 5747 {"cq handler time"} 5748 }; 5749 5750 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 5751 { 5752 switch (stringset) { 5753 case ETH_SS_STATS: 5754 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 5755 default: 5756 return -EINVAL; 5757 } 5758 } 5759 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 5760 5761 void qeth_core_get_ethtool_stats(struct net_device *dev, 5762 struct ethtool_stats *stats, u64 *data) 5763 { 5764 struct qeth_card *card = dev->ml_priv; 5765 data[0] = card->stats.rx_packets - 5766 card->perf_stats.initial_rx_packets; 5767 data[1] = card->perf_stats.bufs_rec; 5768 data[2] = card->stats.tx_packets - 5769 card->perf_stats.initial_tx_packets; 5770 data[3] = card->perf_stats.bufs_sent; 5771 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 5772 - card->perf_stats.skbs_sent_pack; 5773 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 5774 data[6] = card->perf_stats.skbs_sent_pack; 5775 data[7] = card->perf_stats.bufs_sent_pack; 5776 data[8] = card->perf_stats.sg_skbs_sent; 5777 data[9] = card->perf_stats.sg_frags_sent; 5778 data[10] = card->perf_stats.sg_skbs_rx; 5779 data[11] = card->perf_stats.sg_frags_rx; 5780 data[12] = card->perf_stats.sg_alloc_page_rx; 5781 data[13] = (card->perf_stats.large_send_bytes >> 10); 5782 data[14] = card->perf_stats.large_send_cnt; 5783 data[15] = card->perf_stats.sc_dp_p; 5784 data[16] = card->perf_stats.sc_p_dp; 5785 data[17] = QETH_LOW_WATERMARK_PACK; 5786 data[18] = QETH_HIGH_WATERMARK_PACK; 5787 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 5788 data[20] = (card->qdio.no_out_queues > 1) ? 5789 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 5790 data[21] = (card->qdio.no_out_queues > 2) ? 5791 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 5792 data[22] = (card->qdio.no_out_queues > 3) ? 5793 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 5794 data[23] = card->perf_stats.inbound_time; 5795 data[24] = card->perf_stats.inbound_cnt; 5796 data[25] = card->perf_stats.inbound_do_qdio_time; 5797 data[26] = card->perf_stats.inbound_do_qdio_cnt; 5798 data[27] = card->perf_stats.outbound_handler_time; 5799 data[28] = card->perf_stats.outbound_handler_cnt; 5800 data[29] = card->perf_stats.outbound_time; 5801 data[30] = card->perf_stats.outbound_cnt; 5802 data[31] = card->perf_stats.outbound_do_qdio_time; 5803 data[32] = card->perf_stats.outbound_do_qdio_cnt; 5804 data[33] = card->perf_stats.tx_csum; 5805 data[34] = card->perf_stats.tx_lin; 5806 data[35] = card->perf_stats.cq_cnt; 5807 data[36] = card->perf_stats.cq_time; 5808 } 5809 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 5810 5811 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 5812 { 5813 switch (stringset) { 5814 case ETH_SS_STATS: 5815 memcpy(data, &qeth_ethtool_stats_keys, 5816 sizeof(qeth_ethtool_stats_keys)); 5817 break; 5818 default: 5819 WARN_ON(1); 5820 break; 5821 } 5822 } 5823 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 5824 5825 void qeth_core_get_drvinfo(struct net_device *dev, 5826 struct ethtool_drvinfo *info) 5827 { 5828 struct qeth_card *card = dev->ml_priv; 5829 5830 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 5831 sizeof(info->driver)); 5832 strlcpy(info->version, "1.0", sizeof(info->version)); 5833 strlcpy(info->fw_version, card->info.mcl_level, 5834 sizeof(info->fw_version)); 5835 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 5836 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 5837 } 5838 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 5839 5840 /* Helper function to fill 'advertizing' and 'supported' which are the same. */ 5841 /* Autoneg and full-duplex are supported and advertized uncondionally. */ 5842 /* Always advertize and support all speeds up to specified, and only one */ 5843 /* specified port type. */ 5844 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd, 5845 int maxspeed, int porttype) 5846 { 5847 int port_sup, port_adv, spd_sup, spd_adv; 5848 5849 switch (porttype) { 5850 case PORT_TP: 5851 port_sup = SUPPORTED_TP; 5852 port_adv = ADVERTISED_TP; 5853 break; 5854 case PORT_FIBRE: 5855 port_sup = SUPPORTED_FIBRE; 5856 port_adv = ADVERTISED_FIBRE; 5857 break; 5858 default: 5859 port_sup = SUPPORTED_TP; 5860 port_adv = ADVERTISED_TP; 5861 WARN_ON_ONCE(1); 5862 } 5863 5864 /* "Fallthrough" case'es ordered from high to low result in setting */ 5865 /* flags cumulatively, starting from the specified speed and down to */ 5866 /* the lowest possible. */ 5867 spd_sup = 0; 5868 spd_adv = 0; 5869 switch (maxspeed) { 5870 case SPEED_10000: 5871 spd_sup |= SUPPORTED_10000baseT_Full; 5872 spd_adv |= ADVERTISED_10000baseT_Full; 5873 case SPEED_1000: 5874 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; 5875 spd_adv |= ADVERTISED_1000baseT_Half | 5876 ADVERTISED_1000baseT_Full; 5877 case SPEED_100: 5878 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; 5879 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; 5880 case SPEED_10: 5881 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 5882 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; 5883 break; 5884 default: 5885 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 5886 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; 5887 WARN_ON_ONCE(1); 5888 } 5889 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv; 5890 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup; 5891 } 5892 5893 int qeth_core_ethtool_get_settings(struct net_device *netdev, 5894 struct ethtool_cmd *ecmd) 5895 { 5896 struct qeth_card *card = netdev->ml_priv; 5897 enum qeth_link_types link_type; 5898 struct carrier_info carrier_info; 5899 int rc; 5900 u32 speed; 5901 5902 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 5903 link_type = QETH_LINK_TYPE_10GBIT_ETH; 5904 else 5905 link_type = card->info.link_type; 5906 5907 ecmd->transceiver = XCVR_INTERNAL; 5908 ecmd->duplex = DUPLEX_FULL; 5909 ecmd->autoneg = AUTONEG_ENABLE; 5910 5911 switch (link_type) { 5912 case QETH_LINK_TYPE_FAST_ETH: 5913 case QETH_LINK_TYPE_LANE_ETH100: 5914 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP); 5915 speed = SPEED_100; 5916 ecmd->port = PORT_TP; 5917 break; 5918 5919 case QETH_LINK_TYPE_GBIT_ETH: 5920 case QETH_LINK_TYPE_LANE_ETH1000: 5921 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE); 5922 speed = SPEED_1000; 5923 ecmd->port = PORT_FIBRE; 5924 break; 5925 5926 case QETH_LINK_TYPE_10GBIT_ETH: 5927 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE); 5928 speed = SPEED_10000; 5929 ecmd->port = PORT_FIBRE; 5930 break; 5931 5932 default: 5933 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP); 5934 speed = SPEED_10; 5935 ecmd->port = PORT_TP; 5936 } 5937 ethtool_cmd_speed_set(ecmd, speed); 5938 5939 /* Check if we can obtain more accurate information. */ 5940 /* If QUERY_CARD_INFO command is not supported or fails, */ 5941 /* just return the heuristics that was filled above. */ 5942 if (!qeth_card_hw_is_reachable(card)) 5943 return -ENODEV; 5944 rc = qeth_query_card_info(card, &carrier_info); 5945 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 5946 return 0; 5947 if (rc) /* report error from the hardware operation */ 5948 return rc; 5949 /* on success, fill in the information got from the hardware */ 5950 5951 netdev_dbg(netdev, 5952 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 5953 carrier_info.card_type, 5954 carrier_info.port_mode, 5955 carrier_info.port_speed); 5956 5957 /* Update attributes for which we've obtained more authoritative */ 5958 /* information, leave the rest the way they where filled above. */ 5959 switch (carrier_info.card_type) { 5960 case CARD_INFO_TYPE_1G_COPPER_A: 5961 case CARD_INFO_TYPE_1G_COPPER_B: 5962 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP); 5963 ecmd->port = PORT_TP; 5964 break; 5965 case CARD_INFO_TYPE_1G_FIBRE_A: 5966 case CARD_INFO_TYPE_1G_FIBRE_B: 5967 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE); 5968 ecmd->port = PORT_FIBRE; 5969 break; 5970 case CARD_INFO_TYPE_10G_FIBRE_A: 5971 case CARD_INFO_TYPE_10G_FIBRE_B: 5972 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE); 5973 ecmd->port = PORT_FIBRE; 5974 break; 5975 } 5976 5977 switch (carrier_info.port_mode) { 5978 case CARD_INFO_PORTM_FULLDUPLEX: 5979 ecmd->duplex = DUPLEX_FULL; 5980 break; 5981 case CARD_INFO_PORTM_HALFDUPLEX: 5982 ecmd->duplex = DUPLEX_HALF; 5983 break; 5984 } 5985 5986 switch (carrier_info.port_speed) { 5987 case CARD_INFO_PORTS_10M: 5988 speed = SPEED_10; 5989 break; 5990 case CARD_INFO_PORTS_100M: 5991 speed = SPEED_100; 5992 break; 5993 case CARD_INFO_PORTS_1G: 5994 speed = SPEED_1000; 5995 break; 5996 case CARD_INFO_PORTS_10G: 5997 speed = SPEED_10000; 5998 break; 5999 } 6000 ethtool_cmd_speed_set(ecmd, speed); 6001 6002 return 0; 6003 } 6004 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings); 6005 6006 static int __init qeth_core_init(void) 6007 { 6008 int rc; 6009 6010 pr_info("loading core functions\n"); 6011 INIT_LIST_HEAD(&qeth_core_card_list.list); 6012 INIT_LIST_HEAD(&qeth_dbf_list); 6013 rwlock_init(&qeth_core_card_list.rwlock); 6014 mutex_init(&qeth_mod_mutex); 6015 6016 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6017 6018 rc = qeth_register_dbf_views(); 6019 if (rc) 6020 goto out_err; 6021 qeth_core_root_dev = root_device_register("qeth"); 6022 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6023 if (rc) 6024 goto register_err; 6025 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6026 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6027 if (!qeth_core_header_cache) { 6028 rc = -ENOMEM; 6029 goto slab_err; 6030 } 6031 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6032 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6033 if (!qeth_qdio_outbuf_cache) { 6034 rc = -ENOMEM; 6035 goto cqslab_err; 6036 } 6037 rc = ccw_driver_register(&qeth_ccw_driver); 6038 if (rc) 6039 goto ccw_err; 6040 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6041 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6042 if (rc) 6043 goto ccwgroup_err; 6044 6045 return 0; 6046 6047 ccwgroup_err: 6048 ccw_driver_unregister(&qeth_ccw_driver); 6049 ccw_err: 6050 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6051 cqslab_err: 6052 kmem_cache_destroy(qeth_core_header_cache); 6053 slab_err: 6054 root_device_unregister(qeth_core_root_dev); 6055 register_err: 6056 qeth_unregister_dbf_views(); 6057 out_err: 6058 pr_err("Initializing the qeth device driver failed\n"); 6059 return rc; 6060 } 6061 6062 static void __exit qeth_core_exit(void) 6063 { 6064 qeth_clear_dbf_list(); 6065 destroy_workqueue(qeth_wq); 6066 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6067 ccw_driver_unregister(&qeth_ccw_driver); 6068 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6069 kmem_cache_destroy(qeth_core_header_cache); 6070 root_device_unregister(qeth_core_root_dev); 6071 qeth_unregister_dbf_views(); 6072 pr_info("core functions removed\n"); 6073 } 6074 6075 module_init(qeth_core_init); 6076 module_exit(qeth_core_exit); 6077 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6078 MODULE_DESCRIPTION("qeth core functions"); 6079 MODULE_LICENSE("GPL"); 6080