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