1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/compat.h> 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/string.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/log2.h> 20 #include <linux/ip.h> 21 #include <linux/tcp.h> 22 #include <linux/mii.h> 23 #include <linux/mm.h> 24 #include <linux/kthread.h> 25 #include <linux/slab.h> 26 #include <linux/if_vlan.h> 27 #include <linux/netdevice.h> 28 #include <linux/netdev_features.h> 29 #include <linux/skbuff.h> 30 #include <linux/vmalloc.h> 31 32 #include <net/iucv/af_iucv.h> 33 #include <net/dsfield.h> 34 35 #include <asm/ebcdic.h> 36 #include <asm/chpid.h> 37 #include <asm/io.h> 38 #include <asm/sysinfo.h> 39 #include <asm/diag.h> 40 #include <asm/cio.h> 41 #include <asm/ccwdev.h> 42 #include <asm/cpcmd.h> 43 44 #include "qeth_core.h" 45 46 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 47 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 48 /* N P A M L V H */ 49 [QETH_DBF_SETUP] = {"qeth_setup", 50 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 51 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 52 &debug_sprintf_view, NULL}, 53 [QETH_DBF_CTRL] = {"qeth_control", 54 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 55 }; 56 EXPORT_SYMBOL_GPL(qeth_dbf); 57 58 struct kmem_cache *qeth_core_header_cache; 59 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 60 static struct kmem_cache *qeth_qdio_outbuf_cache; 61 62 static struct device *qeth_core_root_dev; 63 static struct lock_class_key qdio_out_skb_queue_key; 64 65 static void qeth_issue_next_read_cb(struct qeth_card *card, 66 struct qeth_cmd_buffer *iob, 67 unsigned int data_length); 68 static void qeth_free_buffer_pool(struct qeth_card *); 69 static int qeth_qdio_establish(struct qeth_card *); 70 static void qeth_free_qdio_queues(struct qeth_card *card); 71 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 72 struct qeth_qdio_out_buffer *buf, 73 enum iucv_tx_notify notification); 74 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error, 75 int budget); 76 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 77 78 static void qeth_close_dev_handler(struct work_struct *work) 79 { 80 struct qeth_card *card; 81 82 card = container_of(work, struct qeth_card, close_dev_work); 83 QETH_CARD_TEXT(card, 2, "cldevhdl"); 84 ccwgroup_set_offline(card->gdev); 85 } 86 87 static const char *qeth_get_cardname(struct qeth_card *card) 88 { 89 if (IS_VM_NIC(card)) { 90 switch (card->info.type) { 91 case QETH_CARD_TYPE_OSD: 92 return " Virtual NIC QDIO"; 93 case QETH_CARD_TYPE_IQD: 94 return " Virtual NIC Hiper"; 95 case QETH_CARD_TYPE_OSM: 96 return " Virtual NIC QDIO - OSM"; 97 case QETH_CARD_TYPE_OSX: 98 return " Virtual NIC QDIO - OSX"; 99 default: 100 return " unknown"; 101 } 102 } else { 103 switch (card->info.type) { 104 case QETH_CARD_TYPE_OSD: 105 return " OSD Express"; 106 case QETH_CARD_TYPE_IQD: 107 return " HiperSockets"; 108 case QETH_CARD_TYPE_OSN: 109 return " OSN QDIO"; 110 case QETH_CARD_TYPE_OSM: 111 return " OSM QDIO"; 112 case QETH_CARD_TYPE_OSX: 113 return " OSX QDIO"; 114 default: 115 return " unknown"; 116 } 117 } 118 return " n/a"; 119 } 120 121 /* max length to be returned: 14 */ 122 const char *qeth_get_cardname_short(struct qeth_card *card) 123 { 124 if (IS_VM_NIC(card)) { 125 switch (card->info.type) { 126 case QETH_CARD_TYPE_OSD: 127 return "Virt.NIC QDIO"; 128 case QETH_CARD_TYPE_IQD: 129 return "Virt.NIC Hiper"; 130 case QETH_CARD_TYPE_OSM: 131 return "Virt.NIC OSM"; 132 case QETH_CARD_TYPE_OSX: 133 return "Virt.NIC OSX"; 134 default: 135 return "unknown"; 136 } 137 } else { 138 switch (card->info.type) { 139 case QETH_CARD_TYPE_OSD: 140 switch (card->info.link_type) { 141 case QETH_LINK_TYPE_FAST_ETH: 142 return "OSD_100"; 143 case QETH_LINK_TYPE_HSTR: 144 return "HSTR"; 145 case QETH_LINK_TYPE_GBIT_ETH: 146 return "OSD_1000"; 147 case QETH_LINK_TYPE_10GBIT_ETH: 148 return "OSD_10GIG"; 149 case QETH_LINK_TYPE_25GBIT_ETH: 150 return "OSD_25GIG"; 151 case QETH_LINK_TYPE_LANE_ETH100: 152 return "OSD_FE_LANE"; 153 case QETH_LINK_TYPE_LANE_TR: 154 return "OSD_TR_LANE"; 155 case QETH_LINK_TYPE_LANE_ETH1000: 156 return "OSD_GbE_LANE"; 157 case QETH_LINK_TYPE_LANE: 158 return "OSD_ATM_LANE"; 159 default: 160 return "OSD_Express"; 161 } 162 case QETH_CARD_TYPE_IQD: 163 return "HiperSockets"; 164 case QETH_CARD_TYPE_OSN: 165 return "OSN"; 166 case QETH_CARD_TYPE_OSM: 167 return "OSM_1000"; 168 case QETH_CARD_TYPE_OSX: 169 return "OSX_10GIG"; 170 default: 171 return "unknown"; 172 } 173 } 174 return "n/a"; 175 } 176 177 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 178 int clear_start_mask) 179 { 180 unsigned long flags; 181 182 spin_lock_irqsave(&card->thread_mask_lock, flags); 183 card->thread_allowed_mask = threads; 184 if (clear_start_mask) 185 card->thread_start_mask &= threads; 186 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 187 wake_up(&card->wait_q); 188 } 189 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 190 191 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 192 { 193 unsigned long flags; 194 int rc = 0; 195 196 spin_lock_irqsave(&card->thread_mask_lock, flags); 197 rc = (card->thread_running_mask & threads); 198 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 199 return rc; 200 } 201 EXPORT_SYMBOL_GPL(qeth_threads_running); 202 203 void qeth_clear_working_pool_list(struct qeth_card *card) 204 { 205 struct qeth_buffer_pool_entry *pool_entry, *tmp; 206 207 QETH_CARD_TEXT(card, 5, "clwrklst"); 208 list_for_each_entry_safe(pool_entry, tmp, 209 &card->qdio.in_buf_pool.entry_list, list){ 210 list_del(&pool_entry->list); 211 } 212 } 213 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 214 215 static int qeth_alloc_buffer_pool(struct qeth_card *card) 216 { 217 struct qeth_buffer_pool_entry *pool_entry; 218 void *ptr; 219 int i, j; 220 221 QETH_CARD_TEXT(card, 5, "alocpool"); 222 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 223 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 224 if (!pool_entry) { 225 qeth_free_buffer_pool(card); 226 return -ENOMEM; 227 } 228 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 229 ptr = (void *) __get_free_page(GFP_KERNEL); 230 if (!ptr) { 231 while (j > 0) 232 free_page((unsigned long) 233 pool_entry->elements[--j]); 234 kfree(pool_entry); 235 qeth_free_buffer_pool(card); 236 return -ENOMEM; 237 } 238 pool_entry->elements[j] = ptr; 239 } 240 list_add(&pool_entry->init_list, 241 &card->qdio.init_pool.entry_list); 242 } 243 return 0; 244 } 245 246 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 247 { 248 QETH_CARD_TEXT(card, 2, "realcbp"); 249 250 if (card->state != CARD_STATE_DOWN) 251 return -EPERM; 252 253 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 254 qeth_clear_working_pool_list(card); 255 qeth_free_buffer_pool(card); 256 card->qdio.in_buf_pool.buf_count = bufcnt; 257 card->qdio.init_pool.buf_count = bufcnt; 258 return qeth_alloc_buffer_pool(card); 259 } 260 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 261 262 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 263 { 264 if (!q) 265 return; 266 267 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 268 kfree(q); 269 } 270 271 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 272 { 273 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 274 int i; 275 276 if (!q) 277 return NULL; 278 279 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 280 kfree(q); 281 return NULL; 282 } 283 284 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 285 q->bufs[i].buffer = q->qdio_bufs[i]; 286 287 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 288 return q; 289 } 290 291 static int qeth_cq_init(struct qeth_card *card) 292 { 293 int rc; 294 295 if (card->options.cq == QETH_CQ_ENABLED) { 296 QETH_CARD_TEXT(card, 2, "cqinit"); 297 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 298 QDIO_MAX_BUFFERS_PER_Q); 299 card->qdio.c_q->next_buf_to_init = 127; 300 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 301 card->qdio.no_in_queues - 1, 0, 302 127); 303 if (rc) { 304 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 305 goto out; 306 } 307 } 308 rc = 0; 309 out: 310 return rc; 311 } 312 313 static int qeth_alloc_cq(struct qeth_card *card) 314 { 315 int rc; 316 317 if (card->options.cq == QETH_CQ_ENABLED) { 318 int i; 319 struct qdio_outbuf_state *outbuf_states; 320 321 QETH_CARD_TEXT(card, 2, "cqon"); 322 card->qdio.c_q = qeth_alloc_qdio_queue(); 323 if (!card->qdio.c_q) { 324 rc = -1; 325 goto kmsg_out; 326 } 327 card->qdio.no_in_queues = 2; 328 card->qdio.out_bufstates = 329 kcalloc(card->qdio.no_out_queues * 330 QDIO_MAX_BUFFERS_PER_Q, 331 sizeof(struct qdio_outbuf_state), 332 GFP_KERNEL); 333 outbuf_states = card->qdio.out_bufstates; 334 if (outbuf_states == NULL) { 335 rc = -1; 336 goto free_cq_out; 337 } 338 for (i = 0; i < card->qdio.no_out_queues; ++i) { 339 card->qdio.out_qs[i]->bufstates = outbuf_states; 340 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 341 } 342 } else { 343 QETH_CARD_TEXT(card, 2, "nocq"); 344 card->qdio.c_q = NULL; 345 card->qdio.no_in_queues = 1; 346 } 347 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues); 348 rc = 0; 349 out: 350 return rc; 351 free_cq_out: 352 qeth_free_qdio_queue(card->qdio.c_q); 353 card->qdio.c_q = NULL; 354 kmsg_out: 355 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 356 goto out; 357 } 358 359 static void qeth_free_cq(struct qeth_card *card) 360 { 361 if (card->qdio.c_q) { 362 --card->qdio.no_in_queues; 363 qeth_free_qdio_queue(card->qdio.c_q); 364 card->qdio.c_q = NULL; 365 } 366 kfree(card->qdio.out_bufstates); 367 card->qdio.out_bufstates = NULL; 368 } 369 370 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 371 int delayed) 372 { 373 enum iucv_tx_notify n; 374 375 switch (sbalf15) { 376 case 0: 377 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 378 break; 379 case 4: 380 case 16: 381 case 17: 382 case 18: 383 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 384 TX_NOTIFY_UNREACHABLE; 385 break; 386 default: 387 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 388 TX_NOTIFY_GENERALERROR; 389 break; 390 } 391 392 return n; 393 } 394 395 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 396 int forced_cleanup) 397 { 398 if (q->card->options.cq != QETH_CQ_ENABLED) 399 return; 400 401 if (q->bufs[bidx]->next_pending != NULL) { 402 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 403 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 404 405 while (c) { 406 if (forced_cleanup || 407 atomic_read(&c->state) == 408 QETH_QDIO_BUF_HANDLED_DELAYED) { 409 struct qeth_qdio_out_buffer *f = c; 410 QETH_CARD_TEXT(f->q->card, 5, "fp"); 411 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 412 /* release here to avoid interleaving between 413 outbound tasklet and inbound tasklet 414 regarding notifications and lifecycle */ 415 qeth_tx_complete_buf(c, forced_cleanup, 0); 416 417 c = f->next_pending; 418 WARN_ON_ONCE(head->next_pending != f); 419 head->next_pending = c; 420 kmem_cache_free(qeth_qdio_outbuf_cache, f); 421 } else { 422 head = c; 423 c = c->next_pending; 424 } 425 426 } 427 } 428 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 429 QETH_QDIO_BUF_HANDLED_DELAYED)) { 430 /* for recovery situations */ 431 qeth_init_qdio_out_buf(q, bidx); 432 QETH_CARD_TEXT(q->card, 2, "clprecov"); 433 } 434 } 435 436 437 static void qeth_qdio_handle_aob(struct qeth_card *card, 438 unsigned long phys_aob_addr) 439 { 440 struct qaob *aob; 441 struct qeth_qdio_out_buffer *buffer; 442 enum iucv_tx_notify notification; 443 unsigned int i; 444 445 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 446 QETH_CARD_TEXT(card, 5, "haob"); 447 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 448 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 449 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 450 451 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 452 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 453 notification = TX_NOTIFY_OK; 454 } else { 455 WARN_ON_ONCE(atomic_read(&buffer->state) != 456 QETH_QDIO_BUF_PENDING); 457 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 458 notification = TX_NOTIFY_DELAYED_OK; 459 } 460 461 if (aob->aorc != 0) { 462 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 463 notification = qeth_compute_cq_notification(aob->aorc, 1); 464 } 465 qeth_notify_skbs(buffer->q, buffer, notification); 466 467 /* Free dangling allocations. The attached skbs are handled by 468 * qeth_cleanup_handled_pending(). 469 */ 470 for (i = 0; 471 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card); 472 i++) { 473 if (aob->sba[i] && buffer->is_header[i]) 474 kmem_cache_free(qeth_core_header_cache, 475 (void *) aob->sba[i]); 476 } 477 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED); 478 479 qdio_release_aob(aob); 480 } 481 482 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 483 { 484 return card->options.cq == QETH_CQ_ENABLED && 485 card->qdio.c_q != NULL && 486 queue != 0 && 487 queue == card->qdio.no_in_queues - 1; 488 } 489 490 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len, 491 void *data) 492 { 493 ccw->cmd_code = cmd_code; 494 ccw->flags = flags | CCW_FLAG_SLI; 495 ccw->count = len; 496 ccw->cda = (__u32) __pa(data); 497 } 498 499 static int __qeth_issue_next_read(struct qeth_card *card) 500 { 501 struct qeth_cmd_buffer *iob = card->read_cmd; 502 struct qeth_channel *channel = iob->channel; 503 struct ccw1 *ccw = __ccw_from_cmd(iob); 504 int rc; 505 506 QETH_CARD_TEXT(card, 5, "issnxrd"); 507 if (channel->state != CH_STATE_UP) 508 return -EIO; 509 510 memset(iob->data, 0, iob->length); 511 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data); 512 iob->callback = qeth_issue_next_read_cb; 513 /* keep the cmd alive after completion: */ 514 qeth_get_cmd(iob); 515 516 QETH_CARD_TEXT(card, 6, "noirqpnd"); 517 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0); 518 if (!rc) { 519 channel->active_cmd = iob; 520 } else { 521 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n", 522 rc, CARD_DEVID(card)); 523 atomic_set(&channel->irq_pending, 0); 524 qeth_put_cmd(iob); 525 card->read_or_write_problem = 1; 526 qeth_schedule_recovery(card); 527 wake_up(&card->wait_q); 528 } 529 return rc; 530 } 531 532 static int qeth_issue_next_read(struct qeth_card *card) 533 { 534 int ret; 535 536 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 537 ret = __qeth_issue_next_read(card); 538 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 539 540 return ret; 541 } 542 543 static void qeth_enqueue_cmd(struct qeth_card *card, 544 struct qeth_cmd_buffer *iob) 545 { 546 spin_lock_irq(&card->lock); 547 list_add_tail(&iob->list, &card->cmd_waiter_list); 548 spin_unlock_irq(&card->lock); 549 } 550 551 static void qeth_dequeue_cmd(struct qeth_card *card, 552 struct qeth_cmd_buffer *iob) 553 { 554 spin_lock_irq(&card->lock); 555 list_del(&iob->list); 556 spin_unlock_irq(&card->lock); 557 } 558 559 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason) 560 { 561 iob->rc = reason; 562 complete(&iob->done); 563 } 564 EXPORT_SYMBOL_GPL(qeth_notify_cmd); 565 566 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 567 struct qeth_card *card) 568 { 569 const char *ipa_name; 570 int com = cmd->hdr.command; 571 ipa_name = qeth_get_ipa_cmd_name(com); 572 573 if (rc) 574 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n", 575 ipa_name, com, CARD_DEVID(card), rc, 576 qeth_get_ipa_msg(rc)); 577 else 578 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n", 579 ipa_name, com, CARD_DEVID(card)); 580 } 581 582 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 583 struct qeth_ipa_cmd *cmd) 584 { 585 QETH_CARD_TEXT(card, 5, "chkipad"); 586 587 if (IS_IPA_REPLY(cmd)) { 588 if (cmd->hdr.command != IPA_CMD_SETCCID && 589 cmd->hdr.command != IPA_CMD_DELCCID && 590 cmd->hdr.command != IPA_CMD_MODCCID && 591 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 592 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 593 return cmd; 594 } 595 596 /* handle unsolicited event: */ 597 switch (cmd->hdr.command) { 598 case IPA_CMD_STOPLAN: 599 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) { 600 dev_err(&card->gdev->dev, 601 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n", 602 QETH_CARD_IFNAME(card)); 603 schedule_work(&card->close_dev_work); 604 } else { 605 dev_warn(&card->gdev->dev, 606 "The link for interface %s on CHPID 0x%X failed\n", 607 QETH_CARD_IFNAME(card), card->info.chpid); 608 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 609 netif_carrier_off(card->dev); 610 } 611 return NULL; 612 case IPA_CMD_STARTLAN: 613 dev_info(&card->gdev->dev, 614 "The link for %s on CHPID 0x%X has been restored\n", 615 QETH_CARD_IFNAME(card), card->info.chpid); 616 if (card->info.hwtrap) 617 card->info.hwtrap = 2; 618 qeth_schedule_recovery(card); 619 return NULL; 620 case IPA_CMD_SETBRIDGEPORT_IQD: 621 case IPA_CMD_SETBRIDGEPORT_OSA: 622 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 623 if (card->discipline->control_event_handler(card, cmd)) 624 return cmd; 625 return NULL; 626 case IPA_CMD_MODCCID: 627 return cmd; 628 case IPA_CMD_REGISTER_LOCAL_ADDR: 629 QETH_CARD_TEXT(card, 3, "irla"); 630 return NULL; 631 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 632 QETH_CARD_TEXT(card, 3, "urla"); 633 return NULL; 634 default: 635 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n"); 636 return cmd; 637 } 638 } 639 640 void qeth_clear_ipacmd_list(struct qeth_card *card) 641 { 642 struct qeth_cmd_buffer *iob; 643 unsigned long flags; 644 645 QETH_CARD_TEXT(card, 4, "clipalst"); 646 647 spin_lock_irqsave(&card->lock, flags); 648 list_for_each_entry(iob, &card->cmd_waiter_list, list) 649 qeth_notify_cmd(iob, -EIO); 650 spin_unlock_irqrestore(&card->lock, flags); 651 } 652 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 653 654 static int qeth_check_idx_response(struct qeth_card *card, 655 unsigned char *buffer) 656 { 657 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 658 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) { 659 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n", 660 buffer[4]); 661 QETH_CARD_TEXT(card, 2, "ckidxres"); 662 QETH_CARD_TEXT(card, 2, " idxterm"); 663 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]); 664 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT || 665 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) { 666 dev_err(&card->gdev->dev, 667 "The device does not support the configured transport mode\n"); 668 return -EPROTONOSUPPORT; 669 } 670 return -EIO; 671 } 672 return 0; 673 } 674 675 void qeth_put_cmd(struct qeth_cmd_buffer *iob) 676 { 677 if (refcount_dec_and_test(&iob->ref_count)) { 678 kfree(iob->data); 679 kfree(iob); 680 } 681 } 682 EXPORT_SYMBOL_GPL(qeth_put_cmd); 683 684 static void qeth_release_buffer_cb(struct qeth_card *card, 685 struct qeth_cmd_buffer *iob, 686 unsigned int data_length) 687 { 688 qeth_put_cmd(iob); 689 } 690 691 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc) 692 { 693 qeth_notify_cmd(iob, rc); 694 qeth_put_cmd(iob); 695 } 696 697 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 698 unsigned int length, unsigned int ccws, 699 long timeout) 700 { 701 struct qeth_cmd_buffer *iob; 702 703 if (length > QETH_BUFSIZE) 704 return NULL; 705 706 iob = kzalloc(sizeof(*iob), GFP_KERNEL); 707 if (!iob) 708 return NULL; 709 710 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1), 711 GFP_KERNEL | GFP_DMA); 712 if (!iob->data) { 713 kfree(iob); 714 return NULL; 715 } 716 717 init_completion(&iob->done); 718 spin_lock_init(&iob->lock); 719 INIT_LIST_HEAD(&iob->list); 720 refcount_set(&iob->ref_count, 1); 721 iob->channel = channel; 722 iob->timeout = timeout; 723 iob->length = length; 724 return iob; 725 } 726 EXPORT_SYMBOL_GPL(qeth_alloc_cmd); 727 728 static void qeth_issue_next_read_cb(struct qeth_card *card, 729 struct qeth_cmd_buffer *iob, 730 unsigned int data_length) 731 { 732 struct qeth_cmd_buffer *request = NULL; 733 struct qeth_ipa_cmd *cmd = NULL; 734 struct qeth_reply *reply = NULL; 735 struct qeth_cmd_buffer *tmp; 736 unsigned long flags; 737 int rc = 0; 738 739 QETH_CARD_TEXT(card, 4, "sndctlcb"); 740 rc = qeth_check_idx_response(card, iob->data); 741 switch (rc) { 742 case 0: 743 break; 744 case -EIO: 745 qeth_schedule_recovery(card); 746 /* fall through */ 747 default: 748 qeth_clear_ipacmd_list(card); 749 goto out; 750 } 751 752 if (IS_IPA(iob->data)) { 753 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 754 cmd = qeth_check_ipa_data(card, cmd); 755 if (!cmd) 756 goto out; 757 if (IS_OSN(card) && card->osn_info.assist_cb && 758 cmd->hdr.command != IPA_CMD_STARTLAN) { 759 card->osn_info.assist_cb(card->dev, cmd); 760 goto out; 761 } 762 } else { 763 /* non-IPA commands should only flow during initialization */ 764 if (card->state != CARD_STATE_DOWN) 765 goto out; 766 } 767 768 /* match against pending cmd requests */ 769 spin_lock_irqsave(&card->lock, flags); 770 list_for_each_entry(tmp, &card->cmd_waiter_list, list) { 771 if (!IS_IPA(tmp->data) || 772 __ipa_cmd(tmp)->hdr.seqno == cmd->hdr.seqno) { 773 request = tmp; 774 /* take the object outside the lock */ 775 qeth_get_cmd(request); 776 break; 777 } 778 } 779 spin_unlock_irqrestore(&card->lock, flags); 780 781 if (!request) 782 goto out; 783 784 reply = &request->reply; 785 if (!reply->callback) { 786 rc = 0; 787 goto no_callback; 788 } 789 790 spin_lock_irqsave(&request->lock, flags); 791 if (request->rc) 792 /* Bail out when the requestor has already left: */ 793 rc = request->rc; 794 else 795 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd : 796 (unsigned long)iob); 797 spin_unlock_irqrestore(&request->lock, flags); 798 799 no_callback: 800 if (rc <= 0) 801 qeth_notify_cmd(request, rc); 802 qeth_put_cmd(request); 803 out: 804 memcpy(&card->seqno.pdu_hdr_ack, 805 QETH_PDU_HEADER_SEQ_NO(iob->data), 806 QETH_SEQ_NO_LENGTH); 807 qeth_put_cmd(iob); 808 __qeth_issue_next_read(card); 809 } 810 811 static int qeth_set_thread_start_bit(struct qeth_card *card, 812 unsigned long thread) 813 { 814 unsigned long flags; 815 816 spin_lock_irqsave(&card->thread_mask_lock, flags); 817 if (!(card->thread_allowed_mask & thread) || 818 (card->thread_start_mask & thread)) { 819 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 820 return -EPERM; 821 } 822 card->thread_start_mask |= thread; 823 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 824 return 0; 825 } 826 827 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 828 { 829 unsigned long flags; 830 831 spin_lock_irqsave(&card->thread_mask_lock, flags); 832 card->thread_start_mask &= ~thread; 833 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 834 wake_up(&card->wait_q); 835 } 836 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 837 838 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 839 { 840 unsigned long flags; 841 842 spin_lock_irqsave(&card->thread_mask_lock, flags); 843 card->thread_running_mask &= ~thread; 844 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 845 wake_up_all(&card->wait_q); 846 } 847 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 848 849 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 850 { 851 unsigned long flags; 852 int rc = 0; 853 854 spin_lock_irqsave(&card->thread_mask_lock, flags); 855 if (card->thread_start_mask & thread) { 856 if ((card->thread_allowed_mask & thread) && 857 !(card->thread_running_mask & thread)) { 858 rc = 1; 859 card->thread_start_mask &= ~thread; 860 card->thread_running_mask |= thread; 861 } else 862 rc = -EPERM; 863 } 864 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 865 return rc; 866 } 867 868 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 869 { 870 int rc = 0; 871 872 wait_event(card->wait_q, 873 (rc = __qeth_do_run_thread(card, thread)) >= 0); 874 return rc; 875 } 876 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 877 878 void qeth_schedule_recovery(struct qeth_card *card) 879 { 880 QETH_CARD_TEXT(card, 2, "startrec"); 881 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 882 schedule_work(&card->kernel_thread_starter); 883 } 884 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 885 886 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev, 887 struct irb *irb) 888 { 889 int dstat, cstat; 890 char *sense; 891 892 sense = (char *) irb->ecw; 893 cstat = irb->scsw.cmd.cstat; 894 dstat = irb->scsw.cmd.dstat; 895 896 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 897 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 898 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 899 QETH_CARD_TEXT(card, 2, "CGENCHK"); 900 dev_warn(&cdev->dev, "The qeth device driver " 901 "failed to recover an error on the device\n"); 902 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n", 903 CCW_DEVID(cdev), dstat, cstat); 904 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 905 16, 1, irb, 64, 1); 906 return -EIO; 907 } 908 909 if (dstat & DEV_STAT_UNIT_CHECK) { 910 if (sense[SENSE_RESETTING_EVENT_BYTE] & 911 SENSE_RESETTING_EVENT_FLAG) { 912 QETH_CARD_TEXT(card, 2, "REVIND"); 913 return -EIO; 914 } 915 if (sense[SENSE_COMMAND_REJECT_BYTE] & 916 SENSE_COMMAND_REJECT_FLAG) { 917 QETH_CARD_TEXT(card, 2, "CMDREJi"); 918 return -EIO; 919 } 920 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 921 QETH_CARD_TEXT(card, 2, "AFFE"); 922 return -EIO; 923 } 924 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 925 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 926 return 0; 927 } 928 QETH_CARD_TEXT(card, 2, "DGENCHK"); 929 return -EIO; 930 } 931 return 0; 932 } 933 934 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev, 935 struct irb *irb) 936 { 937 if (!IS_ERR(irb)) 938 return 0; 939 940 switch (PTR_ERR(irb)) { 941 case -EIO: 942 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n", 943 CCW_DEVID(cdev)); 944 QETH_CARD_TEXT(card, 2, "ckirberr"); 945 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 946 return -EIO; 947 case -ETIMEDOUT: 948 dev_warn(&cdev->dev, "A hardware operation timed out" 949 " on the device\n"); 950 QETH_CARD_TEXT(card, 2, "ckirberr"); 951 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 952 return -ETIMEDOUT; 953 default: 954 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n", 955 PTR_ERR(irb), CCW_DEVID(cdev)); 956 QETH_CARD_TEXT(card, 2, "ckirberr"); 957 QETH_CARD_TEXT(card, 2, " rc???"); 958 return PTR_ERR(irb); 959 } 960 } 961 962 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 963 struct irb *irb) 964 { 965 int rc; 966 int cstat, dstat; 967 struct qeth_cmd_buffer *iob = NULL; 968 struct ccwgroup_device *gdev; 969 struct qeth_channel *channel; 970 struct qeth_card *card; 971 972 /* while we hold the ccwdev lock, this stays valid: */ 973 gdev = dev_get_drvdata(&cdev->dev); 974 card = dev_get_drvdata(&gdev->dev); 975 if (!card) 976 return; 977 978 QETH_CARD_TEXT(card, 5, "irq"); 979 980 if (card->read.ccwdev == cdev) { 981 channel = &card->read; 982 QETH_CARD_TEXT(card, 5, "read"); 983 } else if (card->write.ccwdev == cdev) { 984 channel = &card->write; 985 QETH_CARD_TEXT(card, 5, "write"); 986 } else { 987 channel = &card->data; 988 QETH_CARD_TEXT(card, 5, "data"); 989 } 990 991 if (intparm == 0) { 992 QETH_CARD_TEXT(card, 5, "irqunsol"); 993 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) { 994 QETH_CARD_TEXT(card, 5, "irqunexp"); 995 996 dev_err(&cdev->dev, 997 "Received IRQ with intparm %lx, expected %px\n", 998 intparm, channel->active_cmd); 999 if (channel->active_cmd) 1000 qeth_cancel_cmd(channel->active_cmd, -EIO); 1001 } else { 1002 iob = (struct qeth_cmd_buffer *) (addr_t)intparm; 1003 } 1004 1005 channel->active_cmd = NULL; 1006 1007 rc = qeth_check_irb_error(card, cdev, irb); 1008 if (rc) { 1009 /* IO was terminated, free its resources. */ 1010 if (iob) 1011 qeth_cancel_cmd(iob, rc); 1012 atomic_set(&channel->irq_pending, 0); 1013 wake_up(&card->wait_q); 1014 return; 1015 } 1016 1017 atomic_set(&channel->irq_pending, 0); 1018 1019 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1020 channel->state = CH_STATE_STOPPED; 1021 1022 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1023 channel->state = CH_STATE_HALTED; 1024 1025 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC | 1026 SCSW_FCTL_HALT_FUNC))) { 1027 qeth_cancel_cmd(iob, -ECANCELED); 1028 iob = NULL; 1029 } 1030 1031 cstat = irb->scsw.cmd.cstat; 1032 dstat = irb->scsw.cmd.dstat; 1033 1034 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1035 (dstat & DEV_STAT_UNIT_CHECK) || 1036 (cstat)) { 1037 if (irb->esw.esw0.erw.cons) { 1038 dev_warn(&channel->ccwdev->dev, 1039 "The qeth device driver failed to recover " 1040 "an error on the device\n"); 1041 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n", 1042 CCW_DEVID(channel->ccwdev), cstat, 1043 dstat); 1044 print_hex_dump(KERN_WARNING, "qeth: irb ", 1045 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1046 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1047 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1048 } 1049 1050 rc = qeth_get_problem(card, cdev, irb); 1051 if (rc) { 1052 card->read_or_write_problem = 1; 1053 if (iob) 1054 qeth_cancel_cmd(iob, rc); 1055 qeth_clear_ipacmd_list(card); 1056 qeth_schedule_recovery(card); 1057 goto out; 1058 } 1059 } 1060 1061 if (iob) { 1062 /* sanity check: */ 1063 if (irb->scsw.cmd.count > iob->length) { 1064 qeth_cancel_cmd(iob, -EIO); 1065 goto out; 1066 } 1067 if (iob->callback) 1068 iob->callback(card, iob, 1069 iob->length - irb->scsw.cmd.count); 1070 } 1071 1072 out: 1073 wake_up(&card->wait_q); 1074 return; 1075 } 1076 1077 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1078 struct qeth_qdio_out_buffer *buf, 1079 enum iucv_tx_notify notification) 1080 { 1081 struct sk_buff *skb; 1082 1083 skb_queue_walk(&buf->skb_list, skb) { 1084 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1085 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1086 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk) 1087 iucv_sk(skb->sk)->sk_txnotify(skb, notification); 1088 } 1089 } 1090 1091 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error, 1092 int budget) 1093 { 1094 struct qeth_qdio_out_q *queue = buf->q; 1095 struct sk_buff *skb; 1096 1097 /* release may never happen from within CQ tasklet scope */ 1098 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1099 1100 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1101 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR); 1102 1103 /* Empty buffer? */ 1104 if (buf->next_element_to_fill == 0) 1105 return; 1106 1107 QETH_TXQ_STAT_INC(queue, bufs); 1108 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill); 1109 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) { 1110 unsigned int bytes = qdisc_pkt_len(skb); 1111 bool is_tso = skb_is_gso(skb); 1112 unsigned int packets; 1113 1114 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1; 1115 if (error) { 1116 QETH_TXQ_STAT_ADD(queue, tx_errors, packets); 1117 } else { 1118 QETH_TXQ_STAT_ADD(queue, tx_packets, packets); 1119 QETH_TXQ_STAT_ADD(queue, tx_bytes, bytes); 1120 if (skb->ip_summed == CHECKSUM_PARTIAL) 1121 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets); 1122 if (skb_is_nonlinear(skb)) 1123 QETH_TXQ_STAT_INC(queue, skbs_sg); 1124 if (is_tso) { 1125 QETH_TXQ_STAT_INC(queue, skbs_tso); 1126 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes); 1127 } 1128 } 1129 1130 napi_consume_skb(skb, budget); 1131 } 1132 } 1133 1134 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1135 struct qeth_qdio_out_buffer *buf, 1136 bool error, int budget) 1137 { 1138 int i; 1139 1140 /* is PCI flag set on buffer? */ 1141 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1142 atomic_dec(&queue->set_pci_flags_count); 1143 1144 qeth_tx_complete_buf(buf, error, budget); 1145 1146 for (i = 0; i < queue->max_elements; ++i) { 1147 if (buf->buffer->element[i].addr && buf->is_header[i]) 1148 kmem_cache_free(qeth_core_header_cache, 1149 buf->buffer->element[i].addr); 1150 buf->is_header[i] = 0; 1151 } 1152 1153 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements); 1154 buf->next_element_to_fill = 0; 1155 buf->bytes = 0; 1156 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); 1157 } 1158 1159 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free) 1160 { 1161 int j; 1162 1163 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1164 if (!q->bufs[j]) 1165 continue; 1166 qeth_cleanup_handled_pending(q, j, 1); 1167 qeth_clear_output_buffer(q, q->bufs[j], true, 0); 1168 if (free) { 1169 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1170 q->bufs[j] = NULL; 1171 } 1172 } 1173 } 1174 1175 void qeth_drain_output_queues(struct qeth_card *card) 1176 { 1177 int i; 1178 1179 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1180 /* clear outbound buffers to free skbs */ 1181 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1182 if (card->qdio.out_qs[i]) 1183 qeth_drain_output_queue(card->qdio.out_qs[i], false); 1184 } 1185 } 1186 EXPORT_SYMBOL_GPL(qeth_drain_output_queues); 1187 1188 static void qeth_free_buffer_pool(struct qeth_card *card) 1189 { 1190 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1191 int i = 0; 1192 list_for_each_entry_safe(pool_entry, tmp, 1193 &card->qdio.init_pool.entry_list, init_list){ 1194 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1195 free_page((unsigned long)pool_entry->elements[i]); 1196 list_del(&pool_entry->init_list); 1197 kfree(pool_entry); 1198 } 1199 } 1200 1201 static void qeth_clean_channel(struct qeth_channel *channel) 1202 { 1203 struct ccw_device *cdev = channel->ccwdev; 1204 1205 QETH_DBF_TEXT(SETUP, 2, "freech"); 1206 1207 spin_lock_irq(get_ccwdev_lock(cdev)); 1208 cdev->handler = NULL; 1209 spin_unlock_irq(get_ccwdev_lock(cdev)); 1210 } 1211 1212 static void qeth_setup_channel(struct qeth_channel *channel) 1213 { 1214 struct ccw_device *cdev = channel->ccwdev; 1215 1216 QETH_DBF_TEXT(SETUP, 2, "setupch"); 1217 1218 channel->state = CH_STATE_DOWN; 1219 atomic_set(&channel->irq_pending, 0); 1220 1221 spin_lock_irq(get_ccwdev_lock(cdev)); 1222 cdev->handler = qeth_irq; 1223 spin_unlock_irq(get_ccwdev_lock(cdev)); 1224 } 1225 1226 static int qeth_osa_set_output_queues(struct qeth_card *card, bool single) 1227 { 1228 unsigned int count = single ? 1 : card->dev->num_tx_queues; 1229 int rc; 1230 1231 rtnl_lock(); 1232 rc = netif_set_real_num_tx_queues(card->dev, count); 1233 rtnl_unlock(); 1234 1235 if (rc) 1236 return rc; 1237 1238 if (card->qdio.no_out_queues == count) 1239 return 0; 1240 1241 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) 1242 qeth_free_qdio_queues(card); 1243 1244 if (count == 1) 1245 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1246 1247 card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE; 1248 card->qdio.no_out_queues = count; 1249 return 0; 1250 } 1251 1252 static int qeth_update_from_chp_desc(struct qeth_card *card) 1253 { 1254 struct ccw_device *ccwdev; 1255 struct channel_path_desc_fmt0 *chp_dsc; 1256 int rc = 0; 1257 1258 QETH_CARD_TEXT(card, 2, "chp_desc"); 1259 1260 ccwdev = card->data.ccwdev; 1261 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1262 if (!chp_dsc) 1263 return -ENOMEM; 1264 1265 card->info.func_level = 0x4100 + chp_dsc->desc; 1266 1267 if (IS_OSD(card) || IS_OSX(card)) 1268 /* CHPP field bit 6 == 1 -> single queue */ 1269 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02); 1270 1271 kfree(chp_dsc); 1272 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues); 1273 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level); 1274 return rc; 1275 } 1276 1277 static void qeth_init_qdio_info(struct qeth_card *card) 1278 { 1279 QETH_CARD_TEXT(card, 4, "intqdinf"); 1280 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1281 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1282 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1283 1284 /* inbound */ 1285 card->qdio.no_in_queues = 1; 1286 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1287 if (IS_IQD(card)) 1288 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1289 else 1290 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1291 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1292 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1293 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1294 } 1295 1296 static void qeth_set_initial_options(struct qeth_card *card) 1297 { 1298 card->options.route4.type = NO_ROUTER; 1299 card->options.route6.type = NO_ROUTER; 1300 card->options.rx_sg_cb = QETH_RX_SG_CB; 1301 card->options.isolation = ISOLATION_MODE_NONE; 1302 card->options.cq = QETH_CQ_DISABLED; 1303 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 1304 } 1305 1306 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1307 { 1308 unsigned long flags; 1309 int rc = 0; 1310 1311 spin_lock_irqsave(&card->thread_mask_lock, flags); 1312 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1313 (u8) card->thread_start_mask, 1314 (u8) card->thread_allowed_mask, 1315 (u8) card->thread_running_mask); 1316 rc = (card->thread_start_mask & thread); 1317 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1318 return rc; 1319 } 1320 1321 static void qeth_start_kernel_thread(struct work_struct *work) 1322 { 1323 struct task_struct *ts; 1324 struct qeth_card *card = container_of(work, struct qeth_card, 1325 kernel_thread_starter); 1326 QETH_CARD_TEXT(card , 2, "strthrd"); 1327 1328 if (card->read.state != CH_STATE_UP && 1329 card->write.state != CH_STATE_UP) 1330 return; 1331 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1332 ts = kthread_run(card->discipline->recover, (void *)card, 1333 "qeth_recover"); 1334 if (IS_ERR(ts)) { 1335 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1336 qeth_clear_thread_running_bit(card, 1337 QETH_RECOVER_THREAD); 1338 } 1339 } 1340 } 1341 1342 static void qeth_buffer_reclaim_work(struct work_struct *); 1343 static void qeth_setup_card(struct qeth_card *card) 1344 { 1345 QETH_CARD_TEXT(card, 2, "setupcrd"); 1346 1347 card->info.type = CARD_RDEV(card)->id.driver_info; 1348 card->state = CARD_STATE_DOWN; 1349 spin_lock_init(&card->lock); 1350 spin_lock_init(&card->thread_mask_lock); 1351 mutex_init(&card->conf_mutex); 1352 mutex_init(&card->discipline_mutex); 1353 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1354 INIT_LIST_HEAD(&card->cmd_waiter_list); 1355 init_waitqueue_head(&card->wait_q); 1356 qeth_set_initial_options(card); 1357 /* IP address takeover */ 1358 INIT_LIST_HEAD(&card->ipato.entries); 1359 qeth_init_qdio_info(card); 1360 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1361 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1362 } 1363 1364 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1365 { 1366 struct qeth_card *card = container_of(slr, struct qeth_card, 1367 qeth_service_level); 1368 if (card->info.mcl_level[0]) 1369 seq_printf(m, "qeth: %s firmware level %s\n", 1370 CARD_BUS_ID(card), card->info.mcl_level); 1371 } 1372 1373 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev) 1374 { 1375 struct qeth_card *card; 1376 1377 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1378 card = kzalloc(sizeof(*card), GFP_KERNEL); 1379 if (!card) 1380 goto out; 1381 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1382 1383 card->gdev = gdev; 1384 dev_set_drvdata(&gdev->dev, card); 1385 CARD_RDEV(card) = gdev->cdev[0]; 1386 CARD_WDEV(card) = gdev->cdev[1]; 1387 CARD_DDEV(card) = gdev->cdev[2]; 1388 1389 card->event_wq = alloc_ordered_workqueue("%s_event", 0, 1390 dev_name(&gdev->dev)); 1391 if (!card->event_wq) 1392 goto out_wq; 1393 1394 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0); 1395 if (!card->read_cmd) 1396 goto out_read_cmd; 1397 1398 qeth_setup_channel(&card->read); 1399 qeth_setup_channel(&card->write); 1400 qeth_setup_channel(&card->data); 1401 card->qeth_service_level.seq_print = qeth_core_sl_print; 1402 register_service_level(&card->qeth_service_level); 1403 return card; 1404 1405 out_read_cmd: 1406 destroy_workqueue(card->event_wq); 1407 out_wq: 1408 dev_set_drvdata(&gdev->dev, NULL); 1409 kfree(card); 1410 out: 1411 return NULL; 1412 } 1413 1414 static int qeth_clear_channel(struct qeth_card *card, 1415 struct qeth_channel *channel) 1416 { 1417 int rc; 1418 1419 QETH_CARD_TEXT(card, 3, "clearch"); 1420 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1421 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd); 1422 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1423 1424 if (rc) 1425 return rc; 1426 rc = wait_event_interruptible_timeout(card->wait_q, 1427 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1428 if (rc == -ERESTARTSYS) 1429 return rc; 1430 if (channel->state != CH_STATE_STOPPED) 1431 return -ETIME; 1432 channel->state = CH_STATE_DOWN; 1433 return 0; 1434 } 1435 1436 static int qeth_halt_channel(struct qeth_card *card, 1437 struct qeth_channel *channel) 1438 { 1439 int rc; 1440 1441 QETH_CARD_TEXT(card, 3, "haltch"); 1442 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1443 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd); 1444 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1445 1446 if (rc) 1447 return rc; 1448 rc = wait_event_interruptible_timeout(card->wait_q, 1449 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1450 if (rc == -ERESTARTSYS) 1451 return rc; 1452 if (channel->state != CH_STATE_HALTED) 1453 return -ETIME; 1454 return 0; 1455 } 1456 1457 int qeth_stop_channel(struct qeth_channel *channel) 1458 { 1459 struct ccw_device *cdev = channel->ccwdev; 1460 int rc; 1461 1462 rc = ccw_device_set_offline(cdev); 1463 1464 spin_lock_irq(get_ccwdev_lock(cdev)); 1465 if (channel->active_cmd) { 1466 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n", 1467 channel->active_cmd); 1468 channel->active_cmd = NULL; 1469 } 1470 spin_unlock_irq(get_ccwdev_lock(cdev)); 1471 1472 return rc; 1473 } 1474 EXPORT_SYMBOL_GPL(qeth_stop_channel); 1475 1476 static int qeth_halt_channels(struct qeth_card *card) 1477 { 1478 int rc1 = 0, rc2 = 0, rc3 = 0; 1479 1480 QETH_CARD_TEXT(card, 3, "haltchs"); 1481 rc1 = qeth_halt_channel(card, &card->read); 1482 rc2 = qeth_halt_channel(card, &card->write); 1483 rc3 = qeth_halt_channel(card, &card->data); 1484 if (rc1) 1485 return rc1; 1486 if (rc2) 1487 return rc2; 1488 return rc3; 1489 } 1490 1491 static int qeth_clear_channels(struct qeth_card *card) 1492 { 1493 int rc1 = 0, rc2 = 0, rc3 = 0; 1494 1495 QETH_CARD_TEXT(card, 3, "clearchs"); 1496 rc1 = qeth_clear_channel(card, &card->read); 1497 rc2 = qeth_clear_channel(card, &card->write); 1498 rc3 = qeth_clear_channel(card, &card->data); 1499 if (rc1) 1500 return rc1; 1501 if (rc2) 1502 return rc2; 1503 return rc3; 1504 } 1505 1506 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1507 { 1508 int rc = 0; 1509 1510 QETH_CARD_TEXT(card, 3, "clhacrd"); 1511 1512 if (halt) 1513 rc = qeth_halt_channels(card); 1514 if (rc) 1515 return rc; 1516 return qeth_clear_channels(card); 1517 } 1518 1519 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1520 { 1521 int rc = 0; 1522 1523 QETH_CARD_TEXT(card, 3, "qdioclr"); 1524 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1525 QETH_QDIO_CLEANING)) { 1526 case QETH_QDIO_ESTABLISHED: 1527 if (IS_IQD(card)) 1528 rc = qdio_shutdown(CARD_DDEV(card), 1529 QDIO_FLAG_CLEANUP_USING_HALT); 1530 else 1531 rc = qdio_shutdown(CARD_DDEV(card), 1532 QDIO_FLAG_CLEANUP_USING_CLEAR); 1533 if (rc) 1534 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1535 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1536 break; 1537 case QETH_QDIO_CLEANING: 1538 return rc; 1539 default: 1540 break; 1541 } 1542 rc = qeth_clear_halt_card(card, use_halt); 1543 if (rc) 1544 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1545 return rc; 1546 } 1547 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1548 1549 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1550 { 1551 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1552 struct diag26c_vnic_resp *response = NULL; 1553 struct diag26c_vnic_req *request = NULL; 1554 struct ccw_dev_id id; 1555 char userid[80]; 1556 int rc = 0; 1557 1558 QETH_CARD_TEXT(card, 2, "vmlayer"); 1559 1560 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1561 if (rc) 1562 goto out; 1563 1564 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1565 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1566 if (!request || !response) { 1567 rc = -ENOMEM; 1568 goto out; 1569 } 1570 1571 ccw_device_get_id(CARD_RDEV(card), &id); 1572 request->resp_buf_len = sizeof(*response); 1573 request->resp_version = DIAG26C_VERSION6_VM65918; 1574 request->req_format = DIAG26C_VNIC_INFO; 1575 ASCEBC(userid, 8); 1576 memcpy(&request->sys_name, userid, 8); 1577 request->devno = id.devno; 1578 1579 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1580 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1581 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1582 if (rc) 1583 goto out; 1584 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1585 1586 if (request->resp_buf_len < sizeof(*response) || 1587 response->version != request->resp_version) { 1588 rc = -EIO; 1589 goto out; 1590 } 1591 1592 if (response->protocol == VNIC_INFO_PROT_L2) 1593 disc = QETH_DISCIPLINE_LAYER2; 1594 else if (response->protocol == VNIC_INFO_PROT_L3) 1595 disc = QETH_DISCIPLINE_LAYER3; 1596 1597 out: 1598 kfree(response); 1599 kfree(request); 1600 if (rc) 1601 QETH_CARD_TEXT_(card, 2, "err%x", rc); 1602 return disc; 1603 } 1604 1605 /* Determine whether the device requires a specific layer discipline */ 1606 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1607 { 1608 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1609 1610 if (IS_OSM(card) || IS_OSN(card)) 1611 disc = QETH_DISCIPLINE_LAYER2; 1612 else if (IS_VM_NIC(card)) 1613 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : 1614 qeth_vm_detect_layer(card); 1615 1616 switch (disc) { 1617 case QETH_DISCIPLINE_LAYER2: 1618 QETH_CARD_TEXT(card, 3, "force l2"); 1619 break; 1620 case QETH_DISCIPLINE_LAYER3: 1621 QETH_CARD_TEXT(card, 3, "force l3"); 1622 break; 1623 default: 1624 QETH_CARD_TEXT(card, 3, "force no"); 1625 } 1626 1627 return disc; 1628 } 1629 1630 static void qeth_set_blkt_defaults(struct qeth_card *card) 1631 { 1632 QETH_CARD_TEXT(card, 2, "cfgblkt"); 1633 1634 if (card->info.use_v1_blkt) { 1635 card->info.blkt.time_total = 0; 1636 card->info.blkt.inter_packet = 0; 1637 card->info.blkt.inter_packet_jumbo = 0; 1638 } else { 1639 card->info.blkt.time_total = 250; 1640 card->info.blkt.inter_packet = 5; 1641 card->info.blkt.inter_packet_jumbo = 15; 1642 } 1643 } 1644 1645 static void qeth_init_tokens(struct qeth_card *card) 1646 { 1647 card->token.issuer_rm_w = 0x00010103UL; 1648 card->token.cm_filter_w = 0x00010108UL; 1649 card->token.cm_connection_w = 0x0001010aUL; 1650 card->token.ulp_filter_w = 0x0001010bUL; 1651 card->token.ulp_connection_w = 0x0001010dUL; 1652 } 1653 1654 static void qeth_init_func_level(struct qeth_card *card) 1655 { 1656 switch (card->info.type) { 1657 case QETH_CARD_TYPE_IQD: 1658 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1659 break; 1660 case QETH_CARD_TYPE_OSD: 1661 case QETH_CARD_TYPE_OSN: 1662 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1663 break; 1664 default: 1665 break; 1666 } 1667 } 1668 1669 static void qeth_idx_finalize_cmd(struct qeth_card *card, 1670 struct qeth_cmd_buffer *iob) 1671 { 1672 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr, 1673 QETH_SEQ_NO_LENGTH); 1674 if (iob->channel == &card->write) 1675 card->seqno.trans_hdr++; 1676 } 1677 1678 static int qeth_peer_func_level(int level) 1679 { 1680 if ((level & 0xff) == 8) 1681 return (level & 0xff) + 0x400; 1682 if (((level >> 8) & 3) == 1) 1683 return (level & 0xff) + 0x200; 1684 return level; 1685 } 1686 1687 static void qeth_mpc_finalize_cmd(struct qeth_card *card, 1688 struct qeth_cmd_buffer *iob) 1689 { 1690 qeth_idx_finalize_cmd(card, iob); 1691 1692 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 1693 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 1694 card->seqno.pdu_hdr++; 1695 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 1696 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 1697 1698 iob->callback = qeth_release_buffer_cb; 1699 } 1700 1701 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card, 1702 void *data, 1703 unsigned int data_length) 1704 { 1705 struct qeth_cmd_buffer *iob; 1706 1707 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT); 1708 if (!iob) 1709 return NULL; 1710 1711 memcpy(iob->data, data, data_length); 1712 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length, 1713 iob->data); 1714 iob->finalize = qeth_mpc_finalize_cmd; 1715 return iob; 1716 } 1717 1718 /** 1719 * qeth_send_control_data() - send control command to the card 1720 * @card: qeth_card structure pointer 1721 * @iob: qeth_cmd_buffer pointer 1722 * @reply_cb: callback function pointer 1723 * @cb_card: pointer to the qeth_card structure 1724 * @cb_reply: pointer to the qeth_reply structure 1725 * @cb_cmd: pointer to the original iob for non-IPA 1726 * commands, or to the qeth_ipa_cmd structure 1727 * for the IPA commands. 1728 * @reply_param: private pointer passed to the callback 1729 * 1730 * Callback function gets called one or more times, with cb_cmd 1731 * pointing to the response returned by the hardware. Callback 1732 * function must return 1733 * > 0 if more reply blocks are expected, 1734 * 0 if the last or only reply block is received, and 1735 * < 0 on error. 1736 * Callback function can get the value of the reply_param pointer from the 1737 * field 'param' of the structure qeth_reply. 1738 */ 1739 1740 static int qeth_send_control_data(struct qeth_card *card, 1741 struct qeth_cmd_buffer *iob, 1742 int (*reply_cb)(struct qeth_card *cb_card, 1743 struct qeth_reply *cb_reply, 1744 unsigned long cb_cmd), 1745 void *reply_param) 1746 { 1747 struct qeth_channel *channel = iob->channel; 1748 struct qeth_reply *reply = &iob->reply; 1749 long timeout = iob->timeout; 1750 int rc; 1751 1752 QETH_CARD_TEXT(card, 2, "sendctl"); 1753 1754 reply->callback = reply_cb; 1755 reply->param = reply_param; 1756 1757 timeout = wait_event_interruptible_timeout(card->wait_q, 1758 qeth_trylock_channel(channel), 1759 timeout); 1760 if (timeout <= 0) { 1761 qeth_put_cmd(iob); 1762 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; 1763 } 1764 1765 if (iob->finalize) 1766 iob->finalize(card, iob); 1767 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN)); 1768 1769 qeth_enqueue_cmd(card, iob); 1770 1771 /* This pairs with iob->callback, and keeps the iob alive after IO: */ 1772 qeth_get_cmd(iob); 1773 1774 QETH_CARD_TEXT(card, 6, "noirqpnd"); 1775 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1776 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob), 1777 (addr_t) iob, 0, 0, timeout); 1778 if (!rc) 1779 channel->active_cmd = iob; 1780 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1781 if (rc) { 1782 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n", 1783 CARD_DEVID(card), rc); 1784 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1785 qeth_dequeue_cmd(card, iob); 1786 qeth_put_cmd(iob); 1787 atomic_set(&channel->irq_pending, 0); 1788 wake_up(&card->wait_q); 1789 goto out; 1790 } 1791 1792 timeout = wait_for_completion_interruptible_timeout(&iob->done, 1793 timeout); 1794 if (timeout <= 0) 1795 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; 1796 1797 qeth_dequeue_cmd(card, iob); 1798 1799 if (reply_cb) { 1800 /* Wait until the callback for a late reply has completed: */ 1801 spin_lock_irq(&iob->lock); 1802 if (rc) 1803 /* Zap any callback that's still pending: */ 1804 iob->rc = rc; 1805 spin_unlock_irq(&iob->lock); 1806 } 1807 1808 if (!rc) 1809 rc = iob->rc; 1810 1811 out: 1812 qeth_put_cmd(iob); 1813 return rc; 1814 } 1815 1816 struct qeth_node_desc { 1817 struct node_descriptor nd1; 1818 struct node_descriptor nd2; 1819 struct node_descriptor nd3; 1820 }; 1821 1822 static void qeth_read_conf_data_cb(struct qeth_card *card, 1823 struct qeth_cmd_buffer *iob, 1824 unsigned int data_length) 1825 { 1826 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data; 1827 int rc = 0; 1828 u8 *tag; 1829 1830 QETH_CARD_TEXT(card, 2, "cfgunit"); 1831 1832 if (data_length < sizeof(*nd)) { 1833 rc = -EINVAL; 1834 goto out; 1835 } 1836 1837 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] && 1838 nd->nd1.plant[1] == _ascebc['M']; 1839 tag = (u8 *)&nd->nd1.tag; 1840 card->info.chpid = tag[0]; 1841 card->info.unit_addr2 = tag[1]; 1842 1843 tag = (u8 *)&nd->nd2.tag; 1844 card->info.cula = tag[1]; 1845 1846 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 && 1847 nd->nd3.model[1] == 0xF0 && 1848 nd->nd3.model[2] >= 0xF1 && 1849 nd->nd3.model[2] <= 0xF4; 1850 1851 out: 1852 qeth_notify_cmd(iob, rc); 1853 qeth_put_cmd(iob); 1854 } 1855 1856 static int qeth_read_conf_data(struct qeth_card *card) 1857 { 1858 struct qeth_channel *channel = &card->data; 1859 struct qeth_cmd_buffer *iob; 1860 struct ciw *ciw; 1861 1862 /* scan for RCD command in extended SenseID data */ 1863 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1864 if (!ciw || ciw->cmd == 0) 1865 return -EOPNOTSUPP; 1866 if (ciw->count < sizeof(struct qeth_node_desc)) 1867 return -EINVAL; 1868 1869 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT); 1870 if (!iob) 1871 return -ENOMEM; 1872 1873 iob->callback = qeth_read_conf_data_cb; 1874 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length, 1875 iob->data); 1876 1877 return qeth_send_control_data(card, iob, NULL, NULL); 1878 } 1879 1880 static int qeth_idx_check_activate_response(struct qeth_card *card, 1881 struct qeth_channel *channel, 1882 struct qeth_cmd_buffer *iob) 1883 { 1884 int rc; 1885 1886 rc = qeth_check_idx_response(card, iob->data); 1887 if (rc) 1888 return rc; 1889 1890 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data)) 1891 return 0; 1892 1893 /* negative reply: */ 1894 QETH_CARD_TEXT_(card, 2, "idxneg%c", 1895 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1896 1897 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1898 case QETH_IDX_ACT_ERR_EXCL: 1899 dev_err(&channel->ccwdev->dev, 1900 "The adapter is used exclusively by another host\n"); 1901 return -EBUSY; 1902 case QETH_IDX_ACT_ERR_AUTH: 1903 case QETH_IDX_ACT_ERR_AUTH_USER: 1904 dev_err(&channel->ccwdev->dev, 1905 "Setting the device online failed because of insufficient authorization\n"); 1906 return -EPERM; 1907 default: 1908 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n", 1909 CCW_DEVID(channel->ccwdev)); 1910 return -EIO; 1911 } 1912 } 1913 1914 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card, 1915 struct qeth_cmd_buffer *iob, 1916 unsigned int data_length) 1917 { 1918 struct qeth_channel *channel = iob->channel; 1919 u16 peer_level; 1920 int rc; 1921 1922 QETH_CARD_TEXT(card, 2, "idxrdcb"); 1923 1924 rc = qeth_idx_check_activate_response(card, channel, iob); 1925 if (rc) 1926 goto out; 1927 1928 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1929 if (peer_level != qeth_peer_func_level(card->info.func_level)) { 1930 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", 1931 CCW_DEVID(channel->ccwdev), 1932 card->info.func_level, peer_level); 1933 rc = -EINVAL; 1934 goto out; 1935 } 1936 1937 memcpy(&card->token.issuer_rm_r, 1938 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1939 QETH_MPC_TOKEN_LENGTH); 1940 memcpy(&card->info.mcl_level[0], 1941 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1942 1943 out: 1944 qeth_notify_cmd(iob, rc); 1945 qeth_put_cmd(iob); 1946 } 1947 1948 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card, 1949 struct qeth_cmd_buffer *iob, 1950 unsigned int data_length) 1951 { 1952 struct qeth_channel *channel = iob->channel; 1953 u16 peer_level; 1954 int rc; 1955 1956 QETH_CARD_TEXT(card, 2, "idxwrcb"); 1957 1958 rc = qeth_idx_check_activate_response(card, channel, iob); 1959 if (rc) 1960 goto out; 1961 1962 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1963 if ((peer_level & ~0x0100) != 1964 qeth_peer_func_level(card->info.func_level)) { 1965 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", 1966 CCW_DEVID(channel->ccwdev), 1967 card->info.func_level, peer_level); 1968 rc = -EINVAL; 1969 } 1970 1971 out: 1972 qeth_notify_cmd(iob, rc); 1973 qeth_put_cmd(iob); 1974 } 1975 1976 static void qeth_idx_setup_activate_cmd(struct qeth_card *card, 1977 struct qeth_cmd_buffer *iob) 1978 { 1979 u16 addr = (card->info.cula << 8) + card->info.unit_addr2; 1980 u8 port = ((u8)card->dev->dev_port) | 0x80; 1981 struct ccw1 *ccw = __ccw_from_cmd(iob); 1982 struct ccw_dev_id dev_id; 1983 1984 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE, 1985 iob->data); 1986 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data); 1987 ccw_device_get_id(CARD_DDEV(card), &dev_id); 1988 iob->finalize = qeth_idx_finalize_cmd; 1989 1990 port |= QETH_IDX_ACT_INVAL_FRAME; 1991 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1); 1992 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1993 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1994 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1995 &card->info.func_level, 2); 1996 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2); 1997 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2); 1998 } 1999 2000 static int qeth_idx_activate_read_channel(struct qeth_card *card) 2001 { 2002 struct qeth_channel *channel = &card->read; 2003 struct qeth_cmd_buffer *iob; 2004 int rc; 2005 2006 QETH_CARD_TEXT(card, 2, "idxread"); 2007 2008 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT); 2009 if (!iob) 2010 return -ENOMEM; 2011 2012 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 2013 qeth_idx_setup_activate_cmd(card, iob); 2014 iob->callback = qeth_idx_activate_read_channel_cb; 2015 2016 rc = qeth_send_control_data(card, iob, NULL, NULL); 2017 if (rc) 2018 return rc; 2019 2020 channel->state = CH_STATE_UP; 2021 return 0; 2022 } 2023 2024 static int qeth_idx_activate_write_channel(struct qeth_card *card) 2025 { 2026 struct qeth_channel *channel = &card->write; 2027 struct qeth_cmd_buffer *iob; 2028 int rc; 2029 2030 QETH_CARD_TEXT(card, 2, "idxwrite"); 2031 2032 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT); 2033 if (!iob) 2034 return -ENOMEM; 2035 2036 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 2037 qeth_idx_setup_activate_cmd(card, iob); 2038 iob->callback = qeth_idx_activate_write_channel_cb; 2039 2040 rc = qeth_send_control_data(card, iob, NULL, NULL); 2041 if (rc) 2042 return rc; 2043 2044 channel->state = CH_STATE_UP; 2045 return 0; 2046 } 2047 2048 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2049 unsigned long data) 2050 { 2051 struct qeth_cmd_buffer *iob; 2052 2053 QETH_CARD_TEXT(card, 2, "cmenblcb"); 2054 2055 iob = (struct qeth_cmd_buffer *) data; 2056 memcpy(&card->token.cm_filter_r, 2057 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2058 QETH_MPC_TOKEN_LENGTH); 2059 return 0; 2060 } 2061 2062 static int qeth_cm_enable(struct qeth_card *card) 2063 { 2064 struct qeth_cmd_buffer *iob; 2065 2066 QETH_CARD_TEXT(card, 2, "cmenable"); 2067 2068 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE); 2069 if (!iob) 2070 return -ENOMEM; 2071 2072 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2073 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2074 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2075 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2076 2077 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL); 2078 } 2079 2080 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2081 unsigned long data) 2082 { 2083 struct qeth_cmd_buffer *iob; 2084 2085 QETH_CARD_TEXT(card, 2, "cmsetpcb"); 2086 2087 iob = (struct qeth_cmd_buffer *) data; 2088 memcpy(&card->token.cm_connection_r, 2089 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2090 QETH_MPC_TOKEN_LENGTH); 2091 return 0; 2092 } 2093 2094 static int qeth_cm_setup(struct qeth_card *card) 2095 { 2096 struct qeth_cmd_buffer *iob; 2097 2098 QETH_CARD_TEXT(card, 2, "cmsetup"); 2099 2100 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE); 2101 if (!iob) 2102 return -ENOMEM; 2103 2104 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2105 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2106 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2107 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2108 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2109 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2110 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL); 2111 } 2112 2113 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu) 2114 { 2115 struct net_device *dev = card->dev; 2116 unsigned int new_mtu; 2117 2118 if (!max_mtu) { 2119 /* IQD needs accurate max MTU to set up its RX buffers: */ 2120 if (IS_IQD(card)) 2121 return -EINVAL; 2122 /* tolerate quirky HW: */ 2123 max_mtu = ETH_MAX_MTU; 2124 } 2125 2126 rtnl_lock(); 2127 if (IS_IQD(card)) { 2128 /* move any device with default MTU to new max MTU: */ 2129 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu; 2130 2131 /* adjust RX buffer size to new max MTU: */ 2132 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE; 2133 if (dev->max_mtu && dev->max_mtu != max_mtu) 2134 qeth_free_qdio_queues(card); 2135 } else { 2136 if (dev->mtu) 2137 new_mtu = dev->mtu; 2138 /* default MTUs for first setup: */ 2139 else if (IS_LAYER2(card)) 2140 new_mtu = ETH_DATA_LEN; 2141 else 2142 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */ 2143 } 2144 2145 dev->max_mtu = max_mtu; 2146 dev->mtu = min(new_mtu, max_mtu); 2147 rtnl_unlock(); 2148 return 0; 2149 } 2150 2151 static int qeth_get_mtu_outof_framesize(int framesize) 2152 { 2153 switch (framesize) { 2154 case 0x4000: 2155 return 8192; 2156 case 0x6000: 2157 return 16384; 2158 case 0xa000: 2159 return 32768; 2160 case 0xffff: 2161 return 57344; 2162 default: 2163 return 0; 2164 } 2165 } 2166 2167 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2168 unsigned long data) 2169 { 2170 __u16 mtu, framesize; 2171 __u16 len; 2172 __u8 link_type; 2173 struct qeth_cmd_buffer *iob; 2174 2175 QETH_CARD_TEXT(card, 2, "ulpenacb"); 2176 2177 iob = (struct qeth_cmd_buffer *) data; 2178 memcpy(&card->token.ulp_filter_r, 2179 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2180 QETH_MPC_TOKEN_LENGTH); 2181 if (IS_IQD(card)) { 2182 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2183 mtu = qeth_get_mtu_outof_framesize(framesize); 2184 } else { 2185 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data); 2186 } 2187 *(u16 *)reply->param = mtu; 2188 2189 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2190 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2191 memcpy(&link_type, 2192 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2193 card->info.link_type = link_type; 2194 } else 2195 card->info.link_type = 0; 2196 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type); 2197 return 0; 2198 } 2199 2200 static u8 qeth_mpc_select_prot_type(struct qeth_card *card) 2201 { 2202 if (IS_OSN(card)) 2203 return QETH_PROT_OSN2; 2204 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP; 2205 } 2206 2207 static int qeth_ulp_enable(struct qeth_card *card) 2208 { 2209 u8 prot_type = qeth_mpc_select_prot_type(card); 2210 struct qeth_cmd_buffer *iob; 2211 u16 max_mtu; 2212 int rc; 2213 2214 QETH_CARD_TEXT(card, 2, "ulpenabl"); 2215 2216 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE); 2217 if (!iob) 2218 return -ENOMEM; 2219 2220 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port; 2221 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2222 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2223 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2224 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2225 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2226 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu); 2227 if (rc) 2228 return rc; 2229 return qeth_update_max_mtu(card, max_mtu); 2230 } 2231 2232 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2233 unsigned long data) 2234 { 2235 struct qeth_cmd_buffer *iob; 2236 2237 QETH_CARD_TEXT(card, 2, "ulpstpcb"); 2238 2239 iob = (struct qeth_cmd_buffer *) data; 2240 memcpy(&card->token.ulp_connection_r, 2241 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2242 QETH_MPC_TOKEN_LENGTH); 2243 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2244 3)) { 2245 QETH_CARD_TEXT(card, 2, "olmlimit"); 2246 dev_err(&card->gdev->dev, "A connection could not be " 2247 "established because of an OLM limit\n"); 2248 return -EMLINK; 2249 } 2250 return 0; 2251 } 2252 2253 static int qeth_ulp_setup(struct qeth_card *card) 2254 { 2255 __u16 temp; 2256 struct qeth_cmd_buffer *iob; 2257 struct ccw_dev_id dev_id; 2258 2259 QETH_CARD_TEXT(card, 2, "ulpsetup"); 2260 2261 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE); 2262 if (!iob) 2263 return -ENOMEM; 2264 2265 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2266 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2267 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2268 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2269 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2270 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2271 2272 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2273 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2274 temp = (card->info.cula << 8) + card->info.unit_addr2; 2275 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2276 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL); 2277 } 2278 2279 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2280 { 2281 struct qeth_qdio_out_buffer *newbuf; 2282 2283 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2284 if (!newbuf) 2285 return -ENOMEM; 2286 2287 newbuf->buffer = q->qdio_bufs[bidx]; 2288 skb_queue_head_init(&newbuf->skb_list); 2289 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2290 newbuf->q = q; 2291 newbuf->next_pending = q->bufs[bidx]; 2292 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2293 q->bufs[bidx] = newbuf; 2294 return 0; 2295 } 2296 2297 static void qeth_free_output_queue(struct qeth_qdio_out_q *q) 2298 { 2299 if (!q) 2300 return; 2301 2302 qeth_drain_output_queue(q, true); 2303 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2304 kfree(q); 2305 } 2306 2307 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void) 2308 { 2309 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2310 2311 if (!q) 2312 return NULL; 2313 2314 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2315 kfree(q); 2316 return NULL; 2317 } 2318 return q; 2319 } 2320 2321 static void qeth_tx_completion_timer(struct timer_list *timer) 2322 { 2323 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer); 2324 2325 napi_schedule(&queue->napi); 2326 QETH_TXQ_STAT_INC(queue, completion_timer); 2327 } 2328 2329 static int qeth_alloc_qdio_queues(struct qeth_card *card) 2330 { 2331 int i, j; 2332 2333 QETH_CARD_TEXT(card, 2, "allcqdbf"); 2334 2335 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2336 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2337 return 0; 2338 2339 QETH_CARD_TEXT(card, 2, "inq"); 2340 card->qdio.in_q = qeth_alloc_qdio_queue(); 2341 if (!card->qdio.in_q) 2342 goto out_nomem; 2343 2344 /* inbound buffer pool */ 2345 if (qeth_alloc_buffer_pool(card)) 2346 goto out_freeinq; 2347 2348 /* outbound */ 2349 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2350 struct qeth_qdio_out_q *queue; 2351 2352 queue = qeth_alloc_output_queue(); 2353 if (!queue) 2354 goto out_freeoutq; 2355 QETH_CARD_TEXT_(card, 2, "outq %i", i); 2356 QETH_CARD_HEX(card, 2, &queue, sizeof(void *)); 2357 card->qdio.out_qs[i] = queue; 2358 queue->card = card; 2359 queue->queue_no = i; 2360 timer_setup(&queue->timer, qeth_tx_completion_timer, 0); 2361 2362 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2363 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2364 WARN_ON(queue->bufs[j]); 2365 if (qeth_init_qdio_out_buf(queue, j)) 2366 goto out_freeoutqbufs; 2367 } 2368 } 2369 2370 /* completion */ 2371 if (qeth_alloc_cq(card)) 2372 goto out_freeoutq; 2373 2374 return 0; 2375 2376 out_freeoutqbufs: 2377 while (j > 0) { 2378 --j; 2379 kmem_cache_free(qeth_qdio_outbuf_cache, 2380 card->qdio.out_qs[i]->bufs[j]); 2381 card->qdio.out_qs[i]->bufs[j] = NULL; 2382 } 2383 out_freeoutq: 2384 while (i > 0) { 2385 qeth_free_output_queue(card->qdio.out_qs[--i]); 2386 card->qdio.out_qs[i] = NULL; 2387 } 2388 qeth_free_buffer_pool(card); 2389 out_freeinq: 2390 qeth_free_qdio_queue(card->qdio.in_q); 2391 card->qdio.in_q = NULL; 2392 out_nomem: 2393 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2394 return -ENOMEM; 2395 } 2396 2397 static void qeth_free_qdio_queues(struct qeth_card *card) 2398 { 2399 int i, j; 2400 2401 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2402 QETH_QDIO_UNINITIALIZED) 2403 return; 2404 2405 qeth_free_cq(card); 2406 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2407 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2408 if (card->qdio.in_q->bufs[j].rx_skb) 2409 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2410 } 2411 qeth_free_qdio_queue(card->qdio.in_q); 2412 card->qdio.in_q = NULL; 2413 /* inbound buffer pool */ 2414 qeth_free_buffer_pool(card); 2415 /* free outbound qdio_qs */ 2416 for (i = 0; i < card->qdio.no_out_queues; i++) { 2417 qeth_free_output_queue(card->qdio.out_qs[i]); 2418 card->qdio.out_qs[i] = NULL; 2419 } 2420 } 2421 2422 static void qeth_create_qib_param_field(struct qeth_card *card, 2423 char *param_field) 2424 { 2425 2426 param_field[0] = _ascebc['P']; 2427 param_field[1] = _ascebc['C']; 2428 param_field[2] = _ascebc['I']; 2429 param_field[3] = _ascebc['T']; 2430 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2431 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2432 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2433 } 2434 2435 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2436 char *param_field) 2437 { 2438 param_field[16] = _ascebc['B']; 2439 param_field[17] = _ascebc['L']; 2440 param_field[18] = _ascebc['K']; 2441 param_field[19] = _ascebc['T']; 2442 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2443 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2444 *((unsigned int *) (¶m_field[28])) = 2445 card->info.blkt.inter_packet_jumbo; 2446 } 2447 2448 static int qeth_qdio_activate(struct qeth_card *card) 2449 { 2450 QETH_CARD_TEXT(card, 3, "qdioact"); 2451 return qdio_activate(CARD_DDEV(card)); 2452 } 2453 2454 static int qeth_dm_act(struct qeth_card *card) 2455 { 2456 struct qeth_cmd_buffer *iob; 2457 2458 QETH_CARD_TEXT(card, 2, "dmact"); 2459 2460 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE); 2461 if (!iob) 2462 return -ENOMEM; 2463 2464 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2465 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2466 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2467 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2468 return qeth_send_control_data(card, iob, NULL, NULL); 2469 } 2470 2471 static int qeth_mpc_initialize(struct qeth_card *card) 2472 { 2473 int rc; 2474 2475 QETH_CARD_TEXT(card, 2, "mpcinit"); 2476 2477 rc = qeth_issue_next_read(card); 2478 if (rc) { 2479 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 2480 return rc; 2481 } 2482 rc = qeth_cm_enable(card); 2483 if (rc) { 2484 QETH_CARD_TEXT_(card, 2, "2err%d", rc); 2485 return rc; 2486 } 2487 rc = qeth_cm_setup(card); 2488 if (rc) { 2489 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 2490 return rc; 2491 } 2492 rc = qeth_ulp_enable(card); 2493 if (rc) { 2494 QETH_CARD_TEXT_(card, 2, "4err%d", rc); 2495 return rc; 2496 } 2497 rc = qeth_ulp_setup(card); 2498 if (rc) { 2499 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 2500 return rc; 2501 } 2502 rc = qeth_alloc_qdio_queues(card); 2503 if (rc) { 2504 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 2505 return rc; 2506 } 2507 rc = qeth_qdio_establish(card); 2508 if (rc) { 2509 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 2510 qeth_free_qdio_queues(card); 2511 return rc; 2512 } 2513 rc = qeth_qdio_activate(card); 2514 if (rc) { 2515 QETH_CARD_TEXT_(card, 2, "7err%d", rc); 2516 return rc; 2517 } 2518 rc = qeth_dm_act(card); 2519 if (rc) { 2520 QETH_CARD_TEXT_(card, 2, "8err%d", rc); 2521 return rc; 2522 } 2523 2524 return 0; 2525 } 2526 2527 void qeth_print_status_message(struct qeth_card *card) 2528 { 2529 switch (card->info.type) { 2530 case QETH_CARD_TYPE_OSD: 2531 case QETH_CARD_TYPE_OSM: 2532 case QETH_CARD_TYPE_OSX: 2533 /* VM will use a non-zero first character 2534 * to indicate a HiperSockets like reporting 2535 * of the level OSA sets the first character to zero 2536 * */ 2537 if (!card->info.mcl_level[0]) { 2538 sprintf(card->info.mcl_level, "%02x%02x", 2539 card->info.mcl_level[2], 2540 card->info.mcl_level[3]); 2541 break; 2542 } 2543 /* fallthrough */ 2544 case QETH_CARD_TYPE_IQD: 2545 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) { 2546 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2547 card->info.mcl_level[0]]; 2548 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2549 card->info.mcl_level[1]]; 2550 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2551 card->info.mcl_level[2]]; 2552 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2553 card->info.mcl_level[3]]; 2554 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2555 } 2556 break; 2557 default: 2558 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2559 } 2560 dev_info(&card->gdev->dev, 2561 "Device is a%s card%s%s%s\nwith link type %s.\n", 2562 qeth_get_cardname(card), 2563 (card->info.mcl_level[0]) ? " (level: " : "", 2564 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2565 (card->info.mcl_level[0]) ? ")" : "", 2566 qeth_get_cardname_short(card)); 2567 } 2568 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2569 2570 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2571 { 2572 struct qeth_buffer_pool_entry *entry; 2573 2574 QETH_CARD_TEXT(card, 5, "inwrklst"); 2575 2576 list_for_each_entry(entry, 2577 &card->qdio.init_pool.entry_list, init_list) { 2578 qeth_put_buffer_pool_entry(card, entry); 2579 } 2580 } 2581 2582 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2583 struct qeth_card *card) 2584 { 2585 struct list_head *plh; 2586 struct qeth_buffer_pool_entry *entry; 2587 int i, free; 2588 struct page *page; 2589 2590 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2591 return NULL; 2592 2593 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2594 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2595 free = 1; 2596 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2597 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2598 free = 0; 2599 break; 2600 } 2601 } 2602 if (free) { 2603 list_del_init(&entry->list); 2604 return entry; 2605 } 2606 } 2607 2608 /* no free buffer in pool so take first one and swap pages */ 2609 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2610 struct qeth_buffer_pool_entry, list); 2611 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2612 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2613 page = alloc_page(GFP_ATOMIC); 2614 if (!page) { 2615 return NULL; 2616 } else { 2617 free_page((unsigned long)entry->elements[i]); 2618 entry->elements[i] = page_address(page); 2619 QETH_CARD_STAT_INC(card, rx_sg_alloc_page); 2620 } 2621 } 2622 } 2623 list_del_init(&entry->list); 2624 return entry; 2625 } 2626 2627 static int qeth_init_input_buffer(struct qeth_card *card, 2628 struct qeth_qdio_buffer *buf) 2629 { 2630 struct qeth_buffer_pool_entry *pool_entry; 2631 int i; 2632 2633 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2634 buf->rx_skb = netdev_alloc_skb(card->dev, 2635 QETH_RX_PULL_LEN + ETH_HLEN); 2636 if (!buf->rx_skb) 2637 return 1; 2638 } 2639 2640 pool_entry = qeth_find_free_buffer_pool_entry(card); 2641 if (!pool_entry) 2642 return 1; 2643 2644 /* 2645 * since the buffer is accessed only from the input_tasklet 2646 * there shouldn't be a need to synchronize; also, since we use 2647 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2648 * buffers 2649 */ 2650 2651 buf->pool_entry = pool_entry; 2652 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2653 buf->buffer->element[i].length = PAGE_SIZE; 2654 buf->buffer->element[i].addr = pool_entry->elements[i]; 2655 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2656 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2657 else 2658 buf->buffer->element[i].eflags = 0; 2659 buf->buffer->element[i].sflags = 0; 2660 } 2661 return 0; 2662 } 2663 2664 static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card, 2665 struct qeth_qdio_out_q *queue) 2666 { 2667 if (!IS_IQD(card) || 2668 qeth_iqd_is_mcast_queue(card, queue) || 2669 card->options.cq == QETH_CQ_ENABLED || 2670 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd)) 2671 return 1; 2672 2673 return card->ssqd.mmwc ? card->ssqd.mmwc : 1; 2674 } 2675 2676 int qeth_init_qdio_queues(struct qeth_card *card) 2677 { 2678 unsigned int i; 2679 int rc; 2680 2681 QETH_CARD_TEXT(card, 2, "initqdqs"); 2682 2683 /* inbound queue */ 2684 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2685 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2686 qeth_initialize_working_pool_list(card); 2687 /*give only as many buffers to hardware as we have buffer pool entries*/ 2688 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2689 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2690 card->qdio.in_q->next_buf_to_init = 2691 card->qdio.in_buf_pool.buf_count - 1; 2692 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2693 card->qdio.in_buf_pool.buf_count - 1); 2694 if (rc) { 2695 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 2696 return rc; 2697 } 2698 2699 /* completion */ 2700 rc = qeth_cq_init(card); 2701 if (rc) { 2702 return rc; 2703 } 2704 2705 /* outbound queue */ 2706 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2707 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i]; 2708 2709 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2710 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card); 2711 queue->next_buf_to_fill = 0; 2712 queue->do_pack = 0; 2713 queue->prev_hdr = NULL; 2714 queue->bulk_start = 0; 2715 queue->bulk_count = 0; 2716 queue->bulk_max = qeth_tx_select_bulk_max(card, queue); 2717 atomic_set(&queue->used_buffers, 0); 2718 atomic_set(&queue->set_pci_flags_count, 0); 2719 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 2720 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i)); 2721 } 2722 return 0; 2723 } 2724 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2725 2726 static void qeth_ipa_finalize_cmd(struct qeth_card *card, 2727 struct qeth_cmd_buffer *iob) 2728 { 2729 qeth_mpc_finalize_cmd(card, iob); 2730 2731 /* override with IPA-specific values: */ 2732 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++; 2733 } 2734 2735 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2736 u16 cmd_length) 2737 { 2738 u8 prot_type = qeth_mpc_select_prot_type(card); 2739 u16 total_length = iob->length; 2740 2741 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length, 2742 iob->data); 2743 iob->finalize = qeth_ipa_finalize_cmd; 2744 2745 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2746 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2); 2747 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2748 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2); 2749 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2); 2750 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2751 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2752 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2); 2753 } 2754 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2755 2756 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 2757 enum qeth_ipa_cmds cmd_code, 2758 enum qeth_prot_versions prot, 2759 unsigned int data_length) 2760 { 2761 enum qeth_link_types link_type = card->info.link_type; 2762 struct qeth_cmd_buffer *iob; 2763 struct qeth_ipacmd_hdr *hdr; 2764 2765 data_length += offsetof(struct qeth_ipa_cmd, data); 2766 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1, 2767 QETH_IPA_TIMEOUT); 2768 if (!iob) 2769 return NULL; 2770 2771 qeth_prepare_ipa_cmd(card, iob, data_length); 2772 2773 hdr = &__ipa_cmd(iob)->hdr; 2774 hdr->command = cmd_code; 2775 hdr->initiator = IPA_CMD_INITIATOR_HOST; 2776 /* hdr->seqno is set by qeth_send_control_data() */ 2777 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1; 2778 hdr->rel_adapter_no = (u8) card->dev->dev_port; 2779 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1; 2780 hdr->param_count = 1; 2781 hdr->prot_version = prot; 2782 return iob; 2783 } 2784 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd); 2785 2786 static int qeth_send_ipa_cmd_cb(struct qeth_card *card, 2787 struct qeth_reply *reply, unsigned long data) 2788 { 2789 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2790 2791 return (cmd->hdr.return_code) ? -EIO : 0; 2792 } 2793 2794 /** 2795 * qeth_send_ipa_cmd() - send an IPA command 2796 * 2797 * See qeth_send_control_data() for explanation of the arguments. 2798 */ 2799 2800 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2801 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2802 unsigned long), 2803 void *reply_param) 2804 { 2805 int rc; 2806 2807 QETH_CARD_TEXT(card, 4, "sendipa"); 2808 2809 if (card->read_or_write_problem) { 2810 qeth_put_cmd(iob); 2811 return -EIO; 2812 } 2813 2814 if (reply_cb == NULL) 2815 reply_cb = qeth_send_ipa_cmd_cb; 2816 rc = qeth_send_control_data(card, iob, reply_cb, reply_param); 2817 if (rc == -ETIME) { 2818 qeth_clear_ipacmd_list(card); 2819 qeth_schedule_recovery(card); 2820 } 2821 return rc; 2822 } 2823 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2824 2825 static int qeth_send_startlan_cb(struct qeth_card *card, 2826 struct qeth_reply *reply, unsigned long data) 2827 { 2828 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2829 2830 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE) 2831 return -ENETDOWN; 2832 2833 return (cmd->hdr.return_code) ? -EIO : 0; 2834 } 2835 2836 static int qeth_send_startlan(struct qeth_card *card) 2837 { 2838 struct qeth_cmd_buffer *iob; 2839 2840 QETH_CARD_TEXT(card, 2, "strtlan"); 2841 2842 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0); 2843 if (!iob) 2844 return -ENOMEM; 2845 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL); 2846 } 2847 2848 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 2849 { 2850 if (!cmd->hdr.return_code) 2851 cmd->hdr.return_code = 2852 cmd->data.setadapterparms.hdr.return_code; 2853 return cmd->hdr.return_code; 2854 } 2855 2856 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2857 struct qeth_reply *reply, unsigned long data) 2858 { 2859 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2860 2861 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2862 if (qeth_setadpparms_inspect_rc(cmd)) 2863 return -EIO; 2864 2865 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2866 card->info.link_type = 2867 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2868 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type); 2869 } 2870 card->options.adp.supported_funcs = 2871 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2872 return 0; 2873 } 2874 2875 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2876 enum qeth_ipa_setadp_cmd adp_cmd, 2877 unsigned int data_length) 2878 { 2879 struct qeth_ipacmd_setadpparms_hdr *hdr; 2880 struct qeth_cmd_buffer *iob; 2881 2882 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4, 2883 data_length + 2884 offsetof(struct qeth_ipacmd_setadpparms, 2885 data)); 2886 if (!iob) 2887 return NULL; 2888 2889 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr; 2890 hdr->cmdlength = sizeof(*hdr) + data_length; 2891 hdr->command_code = adp_cmd; 2892 hdr->used_total = 1; 2893 hdr->seq_no = 1; 2894 return iob; 2895 } 2896 2897 static int qeth_query_setadapterparms(struct qeth_card *card) 2898 { 2899 int rc; 2900 struct qeth_cmd_buffer *iob; 2901 2902 QETH_CARD_TEXT(card, 3, "queryadp"); 2903 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 2904 SETADP_DATA_SIZEOF(query_cmds_supp)); 2905 if (!iob) 2906 return -ENOMEM; 2907 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 2908 return rc; 2909 } 2910 2911 static int qeth_query_ipassists_cb(struct qeth_card *card, 2912 struct qeth_reply *reply, unsigned long data) 2913 { 2914 struct qeth_ipa_cmd *cmd; 2915 2916 QETH_CARD_TEXT(card, 2, "qipasscb"); 2917 2918 cmd = (struct qeth_ipa_cmd *) data; 2919 2920 switch (cmd->hdr.return_code) { 2921 case IPA_RC_SUCCESS: 2922 break; 2923 case IPA_RC_NOTSUPP: 2924 case IPA_RC_L2_UNSUPPORTED_CMD: 2925 QETH_CARD_TEXT(card, 2, "ipaunsup"); 2926 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 2927 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 2928 return -EOPNOTSUPP; 2929 default: 2930 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n", 2931 CARD_DEVID(card), cmd->hdr.return_code); 2932 return -EIO; 2933 } 2934 2935 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 2936 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 2937 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 2938 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 2939 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 2940 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 2941 } else 2942 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n", 2943 CARD_DEVID(card)); 2944 return 0; 2945 } 2946 2947 static int qeth_query_ipassists(struct qeth_card *card, 2948 enum qeth_prot_versions prot) 2949 { 2950 int rc; 2951 struct qeth_cmd_buffer *iob; 2952 2953 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot); 2954 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0); 2955 if (!iob) 2956 return -ENOMEM; 2957 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 2958 return rc; 2959 } 2960 2961 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 2962 struct qeth_reply *reply, unsigned long data) 2963 { 2964 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2965 struct qeth_query_switch_attributes *attrs; 2966 struct qeth_switch_info *sw_info; 2967 2968 QETH_CARD_TEXT(card, 2, "qswiatcb"); 2969 if (qeth_setadpparms_inspect_rc(cmd)) 2970 return -EIO; 2971 2972 sw_info = (struct qeth_switch_info *)reply->param; 2973 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 2974 sw_info->capabilities = attrs->capabilities; 2975 sw_info->settings = attrs->settings; 2976 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 2977 sw_info->settings); 2978 return 0; 2979 } 2980 2981 int qeth_query_switch_attributes(struct qeth_card *card, 2982 struct qeth_switch_info *sw_info) 2983 { 2984 struct qeth_cmd_buffer *iob; 2985 2986 QETH_CARD_TEXT(card, 2, "qswiattr"); 2987 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 2988 return -EOPNOTSUPP; 2989 if (!netif_carrier_ok(card->dev)) 2990 return -ENOMEDIUM; 2991 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0); 2992 if (!iob) 2993 return -ENOMEM; 2994 return qeth_send_ipa_cmd(card, iob, 2995 qeth_query_switch_attributes_cb, sw_info); 2996 } 2997 2998 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 2999 enum qeth_diags_cmds sub_cmd, 3000 unsigned int data_length) 3001 { 3002 struct qeth_ipacmd_diagass *cmd; 3003 struct qeth_cmd_buffer *iob; 3004 3005 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE, 3006 DIAG_HDR_LEN + data_length); 3007 if (!iob) 3008 return NULL; 3009 3010 cmd = &__ipa_cmd(iob)->data.diagass; 3011 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length; 3012 cmd->subcmd = sub_cmd; 3013 return iob; 3014 } 3015 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd); 3016 3017 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3018 struct qeth_reply *reply, unsigned long data) 3019 { 3020 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3021 u16 rc = cmd->hdr.return_code; 3022 3023 if (rc) { 3024 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3025 return -EIO; 3026 } 3027 3028 card->info.diagass_support = cmd->data.diagass.ext; 3029 return 0; 3030 } 3031 3032 static int qeth_query_setdiagass(struct qeth_card *card) 3033 { 3034 struct qeth_cmd_buffer *iob; 3035 3036 QETH_CARD_TEXT(card, 2, "qdiagass"); 3037 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0); 3038 if (!iob) 3039 return -ENOMEM; 3040 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3041 } 3042 3043 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3044 { 3045 unsigned long info = get_zeroed_page(GFP_KERNEL); 3046 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3047 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3048 struct ccw_dev_id ccwid; 3049 int level; 3050 3051 tid->chpid = card->info.chpid; 3052 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3053 tid->ssid = ccwid.ssid; 3054 tid->devno = ccwid.devno; 3055 if (!info) 3056 return; 3057 level = stsi(NULL, 0, 0, 0); 3058 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3059 tid->lparnr = info222->lpar_number; 3060 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3061 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3062 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3063 } 3064 free_page(info); 3065 return; 3066 } 3067 3068 static int qeth_hw_trap_cb(struct qeth_card *card, 3069 struct qeth_reply *reply, unsigned long data) 3070 { 3071 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3072 u16 rc = cmd->hdr.return_code; 3073 3074 if (rc) { 3075 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3076 return -EIO; 3077 } 3078 return 0; 3079 } 3080 3081 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3082 { 3083 struct qeth_cmd_buffer *iob; 3084 struct qeth_ipa_cmd *cmd; 3085 3086 QETH_CARD_TEXT(card, 2, "diagtrap"); 3087 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64); 3088 if (!iob) 3089 return -ENOMEM; 3090 cmd = __ipa_cmd(iob); 3091 cmd->data.diagass.type = 1; 3092 cmd->data.diagass.action = action; 3093 switch (action) { 3094 case QETH_DIAGS_TRAP_ARM: 3095 cmd->data.diagass.options = 0x0003; 3096 cmd->data.diagass.ext = 0x00010000 + 3097 sizeof(struct qeth_trap_id); 3098 qeth_get_trap_id(card, 3099 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3100 break; 3101 case QETH_DIAGS_TRAP_DISARM: 3102 cmd->data.diagass.options = 0x0001; 3103 break; 3104 case QETH_DIAGS_TRAP_CAPTURE: 3105 break; 3106 } 3107 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3108 } 3109 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3110 3111 static int qeth_check_qdio_errors(struct qeth_card *card, 3112 struct qdio_buffer *buf, 3113 unsigned int qdio_error, 3114 const char *dbftext) 3115 { 3116 if (qdio_error) { 3117 QETH_CARD_TEXT(card, 2, dbftext); 3118 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3119 buf->element[15].sflags); 3120 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3121 buf->element[14].sflags); 3122 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3123 if ((buf->element[15].sflags) == 0x12) { 3124 QETH_CARD_STAT_INC(card, rx_fifo_errors); 3125 return 0; 3126 } else 3127 return 1; 3128 } 3129 return 0; 3130 } 3131 3132 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3133 { 3134 struct qeth_qdio_q *queue = card->qdio.in_q; 3135 struct list_head *lh; 3136 int count; 3137 int i; 3138 int rc; 3139 int newcount = 0; 3140 3141 count = (index < queue->next_buf_to_init)? 3142 card->qdio.in_buf_pool.buf_count - 3143 (queue->next_buf_to_init - index) : 3144 card->qdio.in_buf_pool.buf_count - 3145 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3146 /* only requeue at a certain threshold to avoid SIGAs */ 3147 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3148 for (i = queue->next_buf_to_init; 3149 i < queue->next_buf_to_init + count; ++i) { 3150 if (qeth_init_input_buffer(card, 3151 &queue->bufs[QDIO_BUFNR(i)])) { 3152 break; 3153 } else { 3154 newcount++; 3155 } 3156 } 3157 3158 if (newcount < count) { 3159 /* we are in memory shortage so we switch back to 3160 traditional skb allocation and drop packages */ 3161 atomic_set(&card->force_alloc_skb, 3); 3162 count = newcount; 3163 } else { 3164 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3165 } 3166 3167 if (!count) { 3168 i = 0; 3169 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3170 i++; 3171 if (i == card->qdio.in_buf_pool.buf_count) { 3172 QETH_CARD_TEXT(card, 2, "qsarbw"); 3173 card->reclaim_index = index; 3174 schedule_delayed_work( 3175 &card->buffer_reclaim_work, 3176 QETH_RECLAIM_WORK_TIME); 3177 } 3178 return; 3179 } 3180 3181 /* 3182 * according to old code it should be avoided to requeue all 3183 * 128 buffers in order to benefit from PCI avoidance. 3184 * this function keeps at least one buffer (the buffer at 3185 * 'index') un-requeued -> this buffer is the first buffer that 3186 * will be requeued the next time 3187 */ 3188 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3189 queue->next_buf_to_init, count); 3190 if (rc) { 3191 QETH_CARD_TEXT(card, 2, "qinberr"); 3192 } 3193 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init + 3194 count); 3195 } 3196 } 3197 3198 static void qeth_buffer_reclaim_work(struct work_struct *work) 3199 { 3200 struct qeth_card *card = container_of(work, struct qeth_card, 3201 buffer_reclaim_work.work); 3202 3203 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3204 qeth_queue_input_buffer(card, card->reclaim_index); 3205 } 3206 3207 static void qeth_handle_send_error(struct qeth_card *card, 3208 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3209 { 3210 int sbalf15 = buffer->buffer->element[15].sflags; 3211 3212 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3213 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3214 3215 if (!qdio_err) 3216 return; 3217 3218 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3219 return; 3220 3221 QETH_CARD_TEXT(card, 1, "lnkfail"); 3222 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3223 (u16)qdio_err, (u8)sbalf15); 3224 } 3225 3226 /** 3227 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3228 * @queue: queue to check for packing buffer 3229 * 3230 * Returns number of buffers that were prepared for flush. 3231 */ 3232 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3233 { 3234 struct qeth_qdio_out_buffer *buffer; 3235 3236 buffer = queue->bufs[queue->next_buf_to_fill]; 3237 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3238 (buffer->next_element_to_fill > 0)) { 3239 /* it's a packing buffer */ 3240 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3241 queue->next_buf_to_fill = 3242 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3243 return 1; 3244 } 3245 return 0; 3246 } 3247 3248 /* 3249 * Switched to packing state if the number of used buffers on a queue 3250 * reaches a certain limit. 3251 */ 3252 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3253 { 3254 if (!queue->do_pack) { 3255 if (atomic_read(&queue->used_buffers) 3256 >= QETH_HIGH_WATERMARK_PACK){ 3257 /* switch non-PACKING -> PACKING */ 3258 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3259 QETH_TXQ_STAT_INC(queue, packing_mode_switch); 3260 queue->do_pack = 1; 3261 } 3262 } 3263 } 3264 3265 /* 3266 * Switches from packing to non-packing mode. If there is a packing 3267 * buffer on the queue this buffer will be prepared to be flushed. 3268 * In that case 1 is returned to inform the caller. If no buffer 3269 * has to be flushed, zero is returned. 3270 */ 3271 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3272 { 3273 if (queue->do_pack) { 3274 if (atomic_read(&queue->used_buffers) 3275 <= QETH_LOW_WATERMARK_PACK) { 3276 /* switch PACKING -> non-PACKING */ 3277 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3278 QETH_TXQ_STAT_INC(queue, packing_mode_switch); 3279 queue->do_pack = 0; 3280 return qeth_prep_flush_pack_buffer(queue); 3281 } 3282 } 3283 return 0; 3284 } 3285 3286 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3287 int count) 3288 { 3289 struct qeth_card *card = queue->card; 3290 struct qeth_qdio_out_buffer *buf; 3291 int rc; 3292 int i; 3293 unsigned int qdio_flags; 3294 3295 for (i = index; i < index + count; ++i) { 3296 unsigned int bidx = QDIO_BUFNR(i); 3297 3298 buf = queue->bufs[bidx]; 3299 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3300 SBAL_EFLAGS_LAST_ENTRY; 3301 3302 if (queue->bufstates) 3303 queue->bufstates[bidx].user = buf; 3304 3305 if (IS_IQD(queue->card)) 3306 continue; 3307 3308 if (!queue->do_pack) { 3309 if ((atomic_read(&queue->used_buffers) >= 3310 (QETH_HIGH_WATERMARK_PACK - 3311 QETH_WATERMARK_PACK_FUZZ)) && 3312 !atomic_read(&queue->set_pci_flags_count)) { 3313 /* it's likely that we'll go to packing 3314 * mode soon */ 3315 atomic_inc(&queue->set_pci_flags_count); 3316 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3317 } 3318 } else { 3319 if (!atomic_read(&queue->set_pci_flags_count)) { 3320 /* 3321 * there's no outstanding PCI any more, so we 3322 * have to request a PCI to be sure the the PCI 3323 * will wake at some time in the future then we 3324 * can flush packed buffers that might still be 3325 * hanging around, which can happen if no 3326 * further send was requested by the stack 3327 */ 3328 atomic_inc(&queue->set_pci_flags_count); 3329 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3330 } 3331 } 3332 } 3333 3334 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3335 if (atomic_read(&queue->set_pci_flags_count)) 3336 qdio_flags |= QDIO_FLAG_PCI_OUT; 3337 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3338 queue->queue_no, index, count); 3339 3340 /* Fake the TX completion interrupt: */ 3341 if (IS_IQD(card)) 3342 napi_schedule(&queue->napi); 3343 3344 if (rc) { 3345 /* ignore temporary SIGA errors without busy condition */ 3346 if (rc == -ENOBUFS) 3347 return; 3348 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3349 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3350 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3351 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3352 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3353 3354 /* this must not happen under normal circumstances. if it 3355 * happens something is really wrong -> recover */ 3356 qeth_schedule_recovery(queue->card); 3357 return; 3358 } 3359 } 3360 3361 static void qeth_flush_queue(struct qeth_qdio_out_q *queue) 3362 { 3363 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count); 3364 3365 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count); 3366 queue->prev_hdr = NULL; 3367 queue->bulk_count = 0; 3368 } 3369 3370 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3371 { 3372 int index; 3373 int flush_cnt = 0; 3374 int q_was_packing = 0; 3375 3376 /* 3377 * check if weed have to switch to non-packing mode or if 3378 * we have to get a pci flag out on the queue 3379 */ 3380 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3381 !atomic_read(&queue->set_pci_flags_count)) { 3382 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3383 QETH_OUT_Q_UNLOCKED) { 3384 /* 3385 * If we get in here, there was no action in 3386 * do_send_packet. So, we check if there is a 3387 * packing buffer to be flushed here. 3388 */ 3389 index = queue->next_buf_to_fill; 3390 q_was_packing = queue->do_pack; 3391 /* queue->do_pack may change */ 3392 barrier(); 3393 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3394 if (!flush_cnt && 3395 !atomic_read(&queue->set_pci_flags_count)) 3396 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3397 if (q_was_packing) 3398 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt); 3399 if (flush_cnt) 3400 qeth_flush_buffers(queue, index, flush_cnt); 3401 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3402 } 3403 } 3404 } 3405 3406 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3407 unsigned long card_ptr) 3408 { 3409 struct qeth_card *card = (struct qeth_card *)card_ptr; 3410 3411 if (card->dev->flags & IFF_UP) 3412 napi_schedule(&card->napi); 3413 } 3414 3415 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3416 { 3417 int rc; 3418 3419 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3420 rc = -1; 3421 goto out; 3422 } else { 3423 if (card->options.cq == cq) { 3424 rc = 0; 3425 goto out; 3426 } 3427 3428 qeth_free_qdio_queues(card); 3429 card->options.cq = cq; 3430 rc = 0; 3431 } 3432 out: 3433 return rc; 3434 3435 } 3436 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3437 3438 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err, 3439 unsigned int queue, int first_element, 3440 int count) 3441 { 3442 struct qeth_qdio_q *cq = card->qdio.c_q; 3443 int i; 3444 int rc; 3445 3446 if (!qeth_is_cq(card, queue)) 3447 return; 3448 3449 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3450 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3451 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3452 3453 if (qdio_err) { 3454 netif_tx_stop_all_queues(card->dev); 3455 qeth_schedule_recovery(card); 3456 return; 3457 } 3458 3459 for (i = first_element; i < first_element + count; ++i) { 3460 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)]; 3461 int e = 0; 3462 3463 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3464 buffer->element[e].addr) { 3465 unsigned long phys_aob_addr; 3466 3467 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3468 qeth_qdio_handle_aob(card, phys_aob_addr); 3469 ++e; 3470 } 3471 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER); 3472 } 3473 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3474 card->qdio.c_q->next_buf_to_init, 3475 count); 3476 if (rc) { 3477 dev_warn(&card->gdev->dev, 3478 "QDIO reported an error, rc=%i\n", rc); 3479 QETH_CARD_TEXT(card, 2, "qcqherr"); 3480 } 3481 3482 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count); 3483 } 3484 3485 static void qeth_qdio_input_handler(struct ccw_device *ccwdev, 3486 unsigned int qdio_err, int queue, 3487 int first_elem, int count, 3488 unsigned long card_ptr) 3489 { 3490 struct qeth_card *card = (struct qeth_card *)card_ptr; 3491 3492 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3493 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3494 3495 if (qeth_is_cq(card, queue)) 3496 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3497 else if (qdio_err) 3498 qeth_schedule_recovery(card); 3499 } 3500 3501 static void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3502 unsigned int qdio_error, int __queue, 3503 int first_element, int count, 3504 unsigned long card_ptr) 3505 { 3506 struct qeth_card *card = (struct qeth_card *) card_ptr; 3507 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3508 struct net_device *dev = card->dev; 3509 struct netdev_queue *txq; 3510 int i; 3511 3512 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3513 if (qdio_error & QDIO_ERROR_FATAL) { 3514 QETH_CARD_TEXT(card, 2, "achkcond"); 3515 netif_tx_stop_all_queues(dev); 3516 qeth_schedule_recovery(card); 3517 return; 3518 } 3519 3520 for (i = first_element; i < (first_element + count); ++i) { 3521 struct qeth_qdio_out_buffer *buf = queue->bufs[QDIO_BUFNR(i)]; 3522 3523 qeth_handle_send_error(card, buf, qdio_error); 3524 qeth_clear_output_buffer(queue, buf, qdio_error, 0); 3525 } 3526 3527 atomic_sub(count, &queue->used_buffers); 3528 qeth_check_outbound_queue(queue); 3529 3530 txq = netdev_get_tx_queue(dev, __queue); 3531 /* xmit may have observed the full-condition, but not yet stopped the 3532 * txq. In which case the code below won't trigger. So before returning, 3533 * xmit will re-check the txq's fill level and wake it up if needed. 3534 */ 3535 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue)) 3536 netif_tx_wake_queue(txq); 3537 } 3538 3539 /** 3540 * Note: Function assumes that we have 4 outbound queues. 3541 */ 3542 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb) 3543 { 3544 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 3545 u8 tos; 3546 3547 switch (card->qdio.do_prio_queueing) { 3548 case QETH_PRIO_Q_ING_TOS: 3549 case QETH_PRIO_Q_ING_PREC: 3550 switch (qeth_get_ip_version(skb)) { 3551 case 4: 3552 tos = ipv4_get_dsfield(ip_hdr(skb)); 3553 break; 3554 case 6: 3555 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3556 break; 3557 default: 3558 return card->qdio.default_out_queue; 3559 } 3560 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3561 return ~tos >> 6 & 3; 3562 if (tos & IPTOS_MINCOST) 3563 return 3; 3564 if (tos & IPTOS_RELIABILITY) 3565 return 2; 3566 if (tos & IPTOS_THROUGHPUT) 3567 return 1; 3568 if (tos & IPTOS_LOWDELAY) 3569 return 0; 3570 break; 3571 case QETH_PRIO_Q_ING_SKB: 3572 if (skb->priority > 5) 3573 return 0; 3574 return ~skb->priority >> 1 & 3; 3575 case QETH_PRIO_Q_ING_VLAN: 3576 if (veth->h_vlan_proto == htons(ETH_P_8021Q)) 3577 return ~ntohs(veth->h_vlan_TCI) >> 3578 (VLAN_PRIO_SHIFT + 1) & 3; 3579 break; 3580 default: 3581 break; 3582 } 3583 return card->qdio.default_out_queue; 3584 } 3585 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3586 3587 /** 3588 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3589 * @skb: SKB address 3590 * 3591 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3592 * fragmented part of the SKB. Returns zero for linear SKB. 3593 */ 3594 static int qeth_get_elements_for_frags(struct sk_buff *skb) 3595 { 3596 int cnt, elements = 0; 3597 3598 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3599 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3600 3601 elements += qeth_get_elements_for_range( 3602 (addr_t)skb_frag_address(frag), 3603 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3604 } 3605 return elements; 3606 } 3607 3608 /** 3609 * qeth_count_elements() - Counts the number of QDIO buffer elements needed 3610 * to transmit an skb. 3611 * @skb: the skb to operate on. 3612 * @data_offset: skip this part of the skb's linear data 3613 * 3614 * Returns the number of pages, and thus QDIO buffer elements, needed to map the 3615 * skb's data (both its linear part and paged fragments). 3616 */ 3617 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset) 3618 { 3619 unsigned int elements = qeth_get_elements_for_frags(skb); 3620 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3621 addr_t start = (addr_t)skb->data + data_offset; 3622 3623 if (start != end) 3624 elements += qeth_get_elements_for_range(start, end); 3625 return elements; 3626 } 3627 EXPORT_SYMBOL_GPL(qeth_count_elements); 3628 3629 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \ 3630 MAX_TCP_HEADER) 3631 3632 /** 3633 * qeth_add_hw_header() - add a HW header to an skb. 3634 * @skb: skb that the HW header should be added to. 3635 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3636 * it contains a valid pointer to a qeth_hdr. 3637 * @hdr_len: length of the HW header. 3638 * @proto_len: length of protocol headers that need to be in same page as the 3639 * HW header. 3640 * 3641 * Returns the pushed length. If the header can't be pushed on 3642 * (eg. because it would cross a page boundary), it is allocated from 3643 * the cache instead and 0 is returned. 3644 * The number of needed buffer elements is returned in @elements. 3645 * Error to create the hdr is indicated by returning with < 0. 3646 */ 3647 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue, 3648 struct sk_buff *skb, struct qeth_hdr **hdr, 3649 unsigned int hdr_len, unsigned int proto_len, 3650 unsigned int *elements) 3651 { 3652 const unsigned int contiguous = proto_len ? proto_len : 1; 3653 const unsigned int max_elements = queue->max_elements; 3654 unsigned int __elements; 3655 addr_t start, end; 3656 bool push_ok; 3657 int rc; 3658 3659 check_layout: 3660 start = (addr_t)skb->data - hdr_len; 3661 end = (addr_t)skb->data; 3662 3663 if (qeth_get_elements_for_range(start, end + contiguous) == 1) { 3664 /* Push HW header into same page as first protocol header. */ 3665 push_ok = true; 3666 /* ... but TSO always needs a separate element for headers: */ 3667 if (skb_is_gso(skb)) 3668 __elements = 1 + qeth_count_elements(skb, proto_len); 3669 else 3670 __elements = qeth_count_elements(skb, 0); 3671 } else if (!proto_len && PAGE_ALIGNED(skb->data)) { 3672 /* Push HW header into preceding page, flush with skb->data. */ 3673 push_ok = true; 3674 __elements = 1 + qeth_count_elements(skb, 0); 3675 } else { 3676 /* Use header cache, copy protocol headers up. */ 3677 push_ok = false; 3678 __elements = 1 + qeth_count_elements(skb, proto_len); 3679 } 3680 3681 /* Compress skb to fit into one IO buffer: */ 3682 if (__elements > max_elements) { 3683 if (!skb_is_nonlinear(skb)) { 3684 /* Drop it, no easy way of shrinking it further. */ 3685 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n", 3686 max_elements, __elements, skb->len); 3687 return -E2BIG; 3688 } 3689 3690 rc = skb_linearize(skb); 3691 if (rc) { 3692 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail); 3693 return rc; 3694 } 3695 3696 QETH_TXQ_STAT_INC(queue, skbs_linearized); 3697 /* Linearization changed the layout, re-evaluate: */ 3698 goto check_layout; 3699 } 3700 3701 *elements = __elements; 3702 /* Add the header: */ 3703 if (push_ok) { 3704 *hdr = skb_push(skb, hdr_len); 3705 return hdr_len; 3706 } 3707 /* fall back */ 3708 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE) 3709 return -E2BIG; 3710 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3711 if (!*hdr) 3712 return -ENOMEM; 3713 /* Copy protocol headers behind HW header: */ 3714 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len); 3715 return 0; 3716 } 3717 3718 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue, 3719 struct sk_buff *curr_skb, 3720 struct qeth_hdr *curr_hdr) 3721 { 3722 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start]; 3723 struct qeth_hdr *prev_hdr = queue->prev_hdr; 3724 3725 if (!prev_hdr) 3726 return true; 3727 3728 /* All packets must have the same target: */ 3729 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) { 3730 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list); 3731 3732 return ether_addr_equal(eth_hdr(prev_skb)->h_dest, 3733 eth_hdr(curr_skb)->h_dest) && 3734 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2); 3735 } 3736 3737 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) && 3738 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3); 3739 } 3740 3741 static unsigned int __qeth_fill_buffer(struct sk_buff *skb, 3742 struct qeth_qdio_out_buffer *buf, 3743 bool is_first_elem, unsigned int offset) 3744 { 3745 struct qdio_buffer *buffer = buf->buffer; 3746 int element = buf->next_element_to_fill; 3747 int length = skb_headlen(skb) - offset; 3748 char *data = skb->data + offset; 3749 unsigned int elem_length, cnt; 3750 3751 /* map linear part into buffer element(s) */ 3752 while (length > 0) { 3753 elem_length = min_t(unsigned int, length, 3754 PAGE_SIZE - offset_in_page(data)); 3755 3756 buffer->element[element].addr = data; 3757 buffer->element[element].length = elem_length; 3758 length -= elem_length; 3759 if (is_first_elem) { 3760 is_first_elem = false; 3761 if (length || skb_is_nonlinear(skb)) 3762 /* skb needs additional elements */ 3763 buffer->element[element].eflags = 3764 SBAL_EFLAGS_FIRST_FRAG; 3765 else 3766 buffer->element[element].eflags = 0; 3767 } else { 3768 buffer->element[element].eflags = 3769 SBAL_EFLAGS_MIDDLE_FRAG; 3770 } 3771 3772 data += elem_length; 3773 element++; 3774 } 3775 3776 /* map page frags into buffer element(s) */ 3777 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3778 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3779 3780 data = skb_frag_address(frag); 3781 length = skb_frag_size(frag); 3782 while (length > 0) { 3783 elem_length = min_t(unsigned int, length, 3784 PAGE_SIZE - offset_in_page(data)); 3785 3786 buffer->element[element].addr = data; 3787 buffer->element[element].length = elem_length; 3788 buffer->element[element].eflags = 3789 SBAL_EFLAGS_MIDDLE_FRAG; 3790 3791 length -= elem_length; 3792 data += elem_length; 3793 element++; 3794 } 3795 } 3796 3797 if (buffer->element[element - 1].eflags) 3798 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3799 buf->next_element_to_fill = element; 3800 return element; 3801 } 3802 3803 /** 3804 * qeth_fill_buffer() - map skb into an output buffer 3805 * @buf: buffer to transport the skb 3806 * @skb: skb to map into the buffer 3807 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 3808 * from qeth_core_header_cache. 3809 * @offset: when mapping the skb, start at skb->data + offset 3810 * @hd_len: if > 0, build a dedicated header element of this size 3811 */ 3812 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf, 3813 struct sk_buff *skb, struct qeth_hdr *hdr, 3814 unsigned int offset, unsigned int hd_len) 3815 { 3816 struct qdio_buffer *buffer = buf->buffer; 3817 bool is_first_elem = true; 3818 3819 __skb_queue_tail(&buf->skb_list, skb); 3820 3821 /* build dedicated header element */ 3822 if (hd_len) { 3823 int element = buf->next_element_to_fill; 3824 is_first_elem = false; 3825 3826 buffer->element[element].addr = hdr; 3827 buffer->element[element].length = hd_len; 3828 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3829 /* remember to free cache-allocated qeth_hdr: */ 3830 buf->is_header[element] = ((void *)hdr != skb->data); 3831 buf->next_element_to_fill++; 3832 } 3833 3834 return __qeth_fill_buffer(skb, buf, is_first_elem, offset); 3835 } 3836 3837 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue, 3838 struct sk_buff *skb, unsigned int elements, 3839 struct qeth_hdr *hdr, unsigned int offset, 3840 unsigned int hd_len) 3841 { 3842 unsigned int bytes = qdisc_pkt_len(skb); 3843 struct qeth_qdio_out_buffer *buffer; 3844 unsigned int next_element; 3845 struct netdev_queue *txq; 3846 bool stopped = false; 3847 bool flush; 3848 3849 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)]; 3850 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); 3851 3852 /* Just a sanity check, the wake/stop logic should ensure that we always 3853 * get a free buffer. 3854 */ 3855 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 3856 return -EBUSY; 3857 3858 flush = !qeth_iqd_may_bulk(queue, skb, hdr); 3859 3860 if (flush || 3861 (buffer->next_element_to_fill + elements > queue->max_elements)) { 3862 if (buffer->next_element_to_fill > 0) { 3863 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3864 queue->bulk_count++; 3865 } 3866 3867 if (queue->bulk_count >= queue->bulk_max) 3868 flush = true; 3869 3870 if (flush) 3871 qeth_flush_queue(queue); 3872 3873 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + 3874 queue->bulk_count)]; 3875 3876 /* Sanity-check again: */ 3877 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 3878 return -EBUSY; 3879 } 3880 3881 if (buffer->next_element_to_fill == 0 && 3882 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { 3883 /* If a TX completion happens right _here_ and misses to wake 3884 * the txq, then our re-check below will catch the race. 3885 */ 3886 QETH_TXQ_STAT_INC(queue, stopped); 3887 netif_tx_stop_queue(txq); 3888 stopped = true; 3889 } 3890 3891 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len); 3892 buffer->bytes += bytes; 3893 queue->prev_hdr = hdr; 3894 3895 flush = __netdev_tx_sent_queue(txq, bytes, 3896 !stopped && netdev_xmit_more()); 3897 3898 if (flush || next_element >= queue->max_elements) { 3899 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3900 queue->bulk_count++; 3901 3902 if (queue->bulk_count >= queue->bulk_max) 3903 flush = true; 3904 3905 if (flush) 3906 qeth_flush_queue(queue); 3907 } 3908 3909 if (stopped && !qeth_out_queue_is_full(queue)) 3910 netif_tx_start_queue(txq); 3911 return 0; 3912 } 3913 3914 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 3915 struct sk_buff *skb, struct qeth_hdr *hdr, 3916 unsigned int offset, unsigned int hd_len, 3917 int elements_needed) 3918 { 3919 struct qeth_qdio_out_buffer *buffer; 3920 unsigned int next_element; 3921 struct netdev_queue *txq; 3922 bool stopped = false; 3923 int start_index; 3924 int flush_count = 0; 3925 int do_pack = 0; 3926 int tmp; 3927 int rc = 0; 3928 3929 /* spin until we get the queue ... */ 3930 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 3931 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 3932 start_index = queue->next_buf_to_fill; 3933 buffer = queue->bufs[queue->next_buf_to_fill]; 3934 3935 /* Just a sanity check, the wake/stop logic should ensure that we always 3936 * get a free buffer. 3937 */ 3938 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 3939 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3940 return -EBUSY; 3941 } 3942 3943 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); 3944 3945 /* check if we need to switch packing state of this queue */ 3946 qeth_switch_to_packing_if_needed(queue); 3947 if (queue->do_pack) { 3948 do_pack = 1; 3949 /* does packet fit in current buffer? */ 3950 if (buffer->next_element_to_fill + elements_needed > 3951 queue->max_elements) { 3952 /* ... no -> set state PRIMED */ 3953 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3954 flush_count++; 3955 queue->next_buf_to_fill = 3956 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3957 buffer = queue->bufs[queue->next_buf_to_fill]; 3958 3959 /* We stepped forward, so sanity-check again: */ 3960 if (atomic_read(&buffer->state) != 3961 QETH_QDIO_BUF_EMPTY) { 3962 qeth_flush_buffers(queue, start_index, 3963 flush_count); 3964 atomic_set(&queue->state, 3965 QETH_OUT_Q_UNLOCKED); 3966 rc = -EBUSY; 3967 goto out; 3968 } 3969 } 3970 } 3971 3972 if (buffer->next_element_to_fill == 0 && 3973 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { 3974 /* If a TX completion happens right _here_ and misses to wake 3975 * the txq, then our re-check below will catch the race. 3976 */ 3977 QETH_TXQ_STAT_INC(queue, stopped); 3978 netif_tx_stop_queue(txq); 3979 stopped = true; 3980 } 3981 3982 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len); 3983 3984 if (queue->do_pack) 3985 QETH_TXQ_STAT_INC(queue, skbs_pack); 3986 if (!queue->do_pack || stopped || next_element >= queue->max_elements) { 3987 flush_count++; 3988 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3989 queue->next_buf_to_fill = 3990 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3991 } 3992 3993 if (flush_count) 3994 qeth_flush_buffers(queue, start_index, flush_count); 3995 else if (!atomic_read(&queue->set_pci_flags_count)) 3996 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 3997 /* 3998 * queue->state will go from LOCKED -> UNLOCKED or from 3999 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4000 * (switch packing state or flush buffer to get another pci flag out). 4001 * In that case we will enter this loop 4002 */ 4003 while (atomic_dec_return(&queue->state)) { 4004 start_index = queue->next_buf_to_fill; 4005 /* check if we can go back to non-packing state */ 4006 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4007 /* 4008 * check if we need to flush a packing buffer to get a pci 4009 * flag out on the queue 4010 */ 4011 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4012 tmp = qeth_prep_flush_pack_buffer(queue); 4013 if (tmp) { 4014 qeth_flush_buffers(queue, start_index, tmp); 4015 flush_count += tmp; 4016 } 4017 } 4018 out: 4019 /* at this point the queue is UNLOCKED again */ 4020 if (do_pack) 4021 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count); 4022 4023 if (stopped && !qeth_out_queue_is_full(queue)) 4024 netif_tx_start_queue(txq); 4025 return rc; 4026 } 4027 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4028 4029 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr, 4030 unsigned int payload_len, struct sk_buff *skb, 4031 unsigned int proto_len) 4032 { 4033 struct qeth_hdr_ext_tso *ext = &hdr->ext; 4034 4035 ext->hdr_tot_len = sizeof(*ext); 4036 ext->imb_hdr_no = 1; 4037 ext->hdr_type = 1; 4038 ext->hdr_version = 1; 4039 ext->hdr_len = 28; 4040 ext->payload_len = payload_len; 4041 ext->mss = skb_shinfo(skb)->gso_size; 4042 ext->dg_hdr_len = proto_len; 4043 } 4044 4045 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 4046 struct qeth_qdio_out_q *queue, int ipv, 4047 void (*fill_header)(struct qeth_qdio_out_q *queue, 4048 struct qeth_hdr *hdr, struct sk_buff *skb, 4049 int ipv, unsigned int data_len)) 4050 { 4051 unsigned int proto_len, hw_hdr_len; 4052 unsigned int frame_len = skb->len; 4053 bool is_tso = skb_is_gso(skb); 4054 unsigned int data_offset = 0; 4055 struct qeth_hdr *hdr = NULL; 4056 unsigned int hd_len = 0; 4057 unsigned int elements; 4058 int push_len, rc; 4059 4060 if (is_tso) { 4061 hw_hdr_len = sizeof(struct qeth_hdr_tso); 4062 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 4063 } else { 4064 hw_hdr_len = sizeof(struct qeth_hdr); 4065 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0; 4066 } 4067 4068 rc = skb_cow_head(skb, hw_hdr_len); 4069 if (rc) 4070 return rc; 4071 4072 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len, 4073 &elements); 4074 if (push_len < 0) 4075 return push_len; 4076 if (is_tso || !push_len) { 4077 /* HW header needs its own buffer element. */ 4078 hd_len = hw_hdr_len + proto_len; 4079 data_offset = push_len + proto_len; 4080 } 4081 memset(hdr, 0, hw_hdr_len); 4082 fill_header(queue, hdr, skb, ipv, frame_len); 4083 if (is_tso) 4084 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr, 4085 frame_len - proto_len, skb, proto_len); 4086 4087 if (IS_IQD(card)) { 4088 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset, 4089 hd_len); 4090 } else { 4091 /* TODO: drop skb_orphan() once TX completion is fast enough */ 4092 skb_orphan(skb); 4093 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset, 4094 hd_len, elements); 4095 } 4096 4097 if (rc && !push_len) 4098 kmem_cache_free(qeth_core_header_cache, hdr); 4099 4100 return rc; 4101 } 4102 EXPORT_SYMBOL_GPL(qeth_xmit); 4103 4104 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4105 struct qeth_reply *reply, unsigned long data) 4106 { 4107 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4108 struct qeth_ipacmd_setadpparms *setparms; 4109 4110 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4111 4112 setparms = &(cmd->data.setadapterparms); 4113 if (qeth_setadpparms_inspect_rc(cmd)) { 4114 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4115 setparms->data.mode = SET_PROMISC_MODE_OFF; 4116 } 4117 card->info.promisc_mode = setparms->data.mode; 4118 return (cmd->hdr.return_code) ? -EIO : 0; 4119 } 4120 4121 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable) 4122 { 4123 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON : 4124 SET_PROMISC_MODE_OFF; 4125 struct qeth_cmd_buffer *iob; 4126 struct qeth_ipa_cmd *cmd; 4127 4128 QETH_CARD_TEXT(card, 4, "setprom"); 4129 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4130 4131 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4132 SETADP_DATA_SIZEOF(mode)); 4133 if (!iob) 4134 return; 4135 cmd = __ipa_cmd(iob); 4136 cmd->data.setadapterparms.data.mode = mode; 4137 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4138 } 4139 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4140 4141 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4142 struct qeth_reply *reply, unsigned long data) 4143 { 4144 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4145 struct qeth_ipacmd_setadpparms *adp_cmd; 4146 4147 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4148 if (qeth_setadpparms_inspect_rc(cmd)) 4149 return -EIO; 4150 4151 adp_cmd = &cmd->data.setadapterparms; 4152 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr)) 4153 return -EADDRNOTAVAIL; 4154 4155 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) && 4156 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC)) 4157 return -EADDRNOTAVAIL; 4158 4159 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr); 4160 return 0; 4161 } 4162 4163 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4164 { 4165 int rc; 4166 struct qeth_cmd_buffer *iob; 4167 struct qeth_ipa_cmd *cmd; 4168 4169 QETH_CARD_TEXT(card, 4, "chgmac"); 4170 4171 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4172 SETADP_DATA_SIZEOF(change_addr)); 4173 if (!iob) 4174 return -ENOMEM; 4175 cmd = __ipa_cmd(iob); 4176 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4177 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4178 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4179 card->dev->dev_addr); 4180 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4181 NULL); 4182 return rc; 4183 } 4184 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4185 4186 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4187 struct qeth_reply *reply, unsigned long data) 4188 { 4189 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4190 struct qeth_set_access_ctrl *access_ctrl_req; 4191 int fallback = *(int *)reply->param; 4192 4193 QETH_CARD_TEXT(card, 4, "setaccb"); 4194 if (cmd->hdr.return_code) 4195 return -EIO; 4196 qeth_setadpparms_inspect_rc(cmd); 4197 4198 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4199 QETH_CARD_TEXT_(card, 2, "rc=%d", 4200 cmd->data.setadapterparms.hdr.return_code); 4201 if (cmd->data.setadapterparms.hdr.return_code != 4202 SET_ACCESS_CTRL_RC_SUCCESS) 4203 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n", 4204 access_ctrl_req->subcmd_code, CARD_DEVID(card), 4205 cmd->data.setadapterparms.hdr.return_code); 4206 switch (cmd->data.setadapterparms.hdr.return_code) { 4207 case SET_ACCESS_CTRL_RC_SUCCESS: 4208 if (card->options.isolation == ISOLATION_MODE_NONE) { 4209 dev_info(&card->gdev->dev, 4210 "QDIO data connection isolation is deactivated\n"); 4211 } else { 4212 dev_info(&card->gdev->dev, 4213 "QDIO data connection isolation is activated\n"); 4214 } 4215 break; 4216 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4217 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n", 4218 CARD_DEVID(card)); 4219 if (fallback) 4220 card->options.isolation = card->options.prev_isolation; 4221 break; 4222 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4223 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n", 4224 CARD_DEVID(card)); 4225 if (fallback) 4226 card->options.isolation = card->options.prev_isolation; 4227 break; 4228 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4229 dev_err(&card->gdev->dev, "Adapter does not " 4230 "support QDIO data connection isolation\n"); 4231 break; 4232 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4233 dev_err(&card->gdev->dev, 4234 "Adapter is dedicated. " 4235 "QDIO data connection isolation not supported\n"); 4236 if (fallback) 4237 card->options.isolation = card->options.prev_isolation; 4238 break; 4239 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4240 dev_err(&card->gdev->dev, 4241 "TSO does not permit QDIO data connection isolation\n"); 4242 if (fallback) 4243 card->options.isolation = card->options.prev_isolation; 4244 break; 4245 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4246 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4247 "support reflective relay mode\n"); 4248 if (fallback) 4249 card->options.isolation = card->options.prev_isolation; 4250 break; 4251 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4252 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4253 "enabled at the adjacent switch port"); 4254 if (fallback) 4255 card->options.isolation = card->options.prev_isolation; 4256 break; 4257 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4258 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4259 "at the adjacent switch failed\n"); 4260 break; 4261 default: 4262 /* this should never happen */ 4263 if (fallback) 4264 card->options.isolation = card->options.prev_isolation; 4265 break; 4266 } 4267 return (cmd->hdr.return_code) ? -EIO : 0; 4268 } 4269 4270 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4271 enum qeth_ipa_isolation_modes isolation, int fallback) 4272 { 4273 int rc; 4274 struct qeth_cmd_buffer *iob; 4275 struct qeth_ipa_cmd *cmd; 4276 struct qeth_set_access_ctrl *access_ctrl_req; 4277 4278 QETH_CARD_TEXT(card, 4, "setacctl"); 4279 4280 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4281 SETADP_DATA_SIZEOF(set_access_ctrl)); 4282 if (!iob) 4283 return -ENOMEM; 4284 cmd = __ipa_cmd(iob); 4285 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4286 access_ctrl_req->subcmd_code = isolation; 4287 4288 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4289 &fallback); 4290 QETH_CARD_TEXT_(card, 2, "rc=%d", rc); 4291 return rc; 4292 } 4293 4294 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4295 { 4296 int rc = 0; 4297 4298 QETH_CARD_TEXT(card, 4, "setactlo"); 4299 4300 if ((IS_OSD(card) || IS_OSX(card)) && 4301 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4302 rc = qeth_setadpparms_set_access_ctrl(card, 4303 card->options.isolation, fallback); 4304 if (rc) { 4305 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n", 4306 rc, CARD_DEVID(card)); 4307 rc = -EOPNOTSUPP; 4308 } 4309 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4310 card->options.isolation = ISOLATION_MODE_NONE; 4311 4312 dev_err(&card->gdev->dev, "Adapter does not " 4313 "support QDIO data connection isolation\n"); 4314 rc = -EOPNOTSUPP; 4315 } 4316 return rc; 4317 } 4318 4319 void qeth_tx_timeout(struct net_device *dev) 4320 { 4321 struct qeth_card *card; 4322 4323 card = dev->ml_priv; 4324 QETH_CARD_TEXT(card, 4, "txtimeo"); 4325 qeth_schedule_recovery(card); 4326 } 4327 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4328 4329 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4330 { 4331 struct qeth_card *card = dev->ml_priv; 4332 int rc = 0; 4333 4334 switch (regnum) { 4335 case MII_BMCR: /* Basic mode control register */ 4336 rc = BMCR_FULLDPLX; 4337 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4338 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4339 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) && 4340 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH)) 4341 rc |= BMCR_SPEED100; 4342 break; 4343 case MII_BMSR: /* Basic mode status register */ 4344 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4345 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4346 BMSR_100BASE4; 4347 break; 4348 case MII_PHYSID1: /* PHYS ID 1 */ 4349 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4350 dev->dev_addr[2]; 4351 rc = (rc >> 5) & 0xFFFF; 4352 break; 4353 case MII_PHYSID2: /* PHYS ID 2 */ 4354 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4355 break; 4356 case MII_ADVERTISE: /* Advertisement control reg */ 4357 rc = ADVERTISE_ALL; 4358 break; 4359 case MII_LPA: /* Link partner ability reg */ 4360 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4361 LPA_100BASE4 | LPA_LPACK; 4362 break; 4363 case MII_EXPANSION: /* Expansion register */ 4364 break; 4365 case MII_DCOUNTER: /* disconnect counter */ 4366 break; 4367 case MII_FCSCOUNTER: /* false carrier counter */ 4368 break; 4369 case MII_NWAYTEST: /* N-way auto-neg test register */ 4370 break; 4371 case MII_RERRCOUNTER: /* rx error counter */ 4372 rc = card->stats.rx_length_errors + 4373 card->stats.rx_frame_errors + 4374 card->stats.rx_fifo_errors; 4375 break; 4376 case MII_SREVISION: /* silicon revision */ 4377 break; 4378 case MII_RESV1: /* reserved 1 */ 4379 break; 4380 case MII_LBRERROR: /* loopback, rx, bypass error */ 4381 break; 4382 case MII_PHYADDR: /* physical address */ 4383 break; 4384 case MII_RESV2: /* reserved 2 */ 4385 break; 4386 case MII_TPISTATUS: /* TPI status for 10mbps */ 4387 break; 4388 case MII_NCONFIG: /* network interface config */ 4389 break; 4390 default: 4391 break; 4392 } 4393 return rc; 4394 } 4395 4396 static int qeth_snmp_command_cb(struct qeth_card *card, 4397 struct qeth_reply *reply, unsigned long data) 4398 { 4399 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4400 struct qeth_arp_query_info *qinfo = reply->param; 4401 struct qeth_ipacmd_setadpparms *adp_cmd; 4402 unsigned int data_len; 4403 void *snmp_data; 4404 4405 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4406 4407 if (cmd->hdr.return_code) { 4408 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4409 return -EIO; 4410 } 4411 if (cmd->data.setadapterparms.hdr.return_code) { 4412 cmd->hdr.return_code = 4413 cmd->data.setadapterparms.hdr.return_code; 4414 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4415 return -EIO; 4416 } 4417 4418 adp_cmd = &cmd->data.setadapterparms; 4419 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr); 4420 if (adp_cmd->hdr.seq_no == 1) { 4421 snmp_data = &adp_cmd->data.snmp; 4422 } else { 4423 snmp_data = &adp_cmd->data.snmp.request; 4424 data_len -= offsetof(struct qeth_snmp_cmd, request); 4425 } 4426 4427 /* check if there is enough room in userspace */ 4428 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4429 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC); 4430 return -ENOSPC; 4431 } 4432 QETH_CARD_TEXT_(card, 4, "snore%i", 4433 cmd->data.setadapterparms.hdr.used_total); 4434 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4435 cmd->data.setadapterparms.hdr.seq_no); 4436 /*copy entries to user buffer*/ 4437 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len); 4438 qinfo->udata_offset += data_len; 4439 4440 if (cmd->data.setadapterparms.hdr.seq_no < 4441 cmd->data.setadapterparms.hdr.used_total) 4442 return 1; 4443 return 0; 4444 } 4445 4446 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4447 { 4448 struct qeth_snmp_ureq __user *ureq; 4449 struct qeth_cmd_buffer *iob; 4450 unsigned int req_len; 4451 struct qeth_arp_query_info qinfo = {0, }; 4452 int rc = 0; 4453 4454 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4455 4456 if (IS_VM_NIC(card)) 4457 return -EOPNOTSUPP; 4458 4459 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4460 IS_LAYER3(card)) 4461 return -EOPNOTSUPP; 4462 4463 ureq = (struct qeth_snmp_ureq __user *) udata; 4464 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) || 4465 get_user(req_len, &ureq->hdr.req_len)) 4466 return -EFAULT; 4467 4468 /* Sanitize user input, to avoid overflows in iob size calculation: */ 4469 if (req_len > QETH_BUFSIZE) 4470 return -EINVAL; 4471 4472 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len); 4473 if (!iob) 4474 return -ENOMEM; 4475 4476 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp, 4477 &ureq->cmd, req_len)) { 4478 qeth_put_cmd(iob); 4479 return -EFAULT; 4480 } 4481 4482 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4483 if (!qinfo.udata) { 4484 qeth_put_cmd(iob); 4485 return -ENOMEM; 4486 } 4487 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4488 4489 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo); 4490 if (rc) 4491 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n", 4492 CARD_DEVID(card), rc); 4493 else { 4494 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4495 rc = -EFAULT; 4496 } 4497 4498 kfree(qinfo.udata); 4499 return rc; 4500 } 4501 4502 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4503 struct qeth_reply *reply, unsigned long data) 4504 { 4505 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4506 struct qeth_qoat_priv *priv; 4507 char *resdata; 4508 int resdatalen; 4509 4510 QETH_CARD_TEXT(card, 3, "qoatcb"); 4511 if (qeth_setadpparms_inspect_rc(cmd)) 4512 return -EIO; 4513 4514 priv = (struct qeth_qoat_priv *)reply->param; 4515 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4516 resdata = (char *)data + 28; 4517 4518 if (resdatalen > (priv->buffer_len - priv->response_len)) 4519 return -ENOSPC; 4520 4521 memcpy((priv->buffer + priv->response_len), resdata, 4522 resdatalen); 4523 priv->response_len += resdatalen; 4524 4525 if (cmd->data.setadapterparms.hdr.seq_no < 4526 cmd->data.setadapterparms.hdr.used_total) 4527 return 1; 4528 return 0; 4529 } 4530 4531 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4532 { 4533 int rc = 0; 4534 struct qeth_cmd_buffer *iob; 4535 struct qeth_ipa_cmd *cmd; 4536 struct qeth_query_oat *oat_req; 4537 struct qeth_query_oat_data oat_data; 4538 struct qeth_qoat_priv priv; 4539 void __user *tmp; 4540 4541 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4542 4543 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4544 rc = -EOPNOTSUPP; 4545 goto out; 4546 } 4547 4548 if (copy_from_user(&oat_data, udata, 4549 sizeof(struct qeth_query_oat_data))) { 4550 rc = -EFAULT; 4551 goto out; 4552 } 4553 4554 priv.buffer_len = oat_data.buffer_len; 4555 priv.response_len = 0; 4556 priv.buffer = vzalloc(oat_data.buffer_len); 4557 if (!priv.buffer) { 4558 rc = -ENOMEM; 4559 goto out; 4560 } 4561 4562 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4563 SETADP_DATA_SIZEOF(query_oat)); 4564 if (!iob) { 4565 rc = -ENOMEM; 4566 goto out_free; 4567 } 4568 cmd = __ipa_cmd(iob); 4569 oat_req = &cmd->data.setadapterparms.data.query_oat; 4570 oat_req->subcmd_code = oat_data.command; 4571 4572 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4573 &priv); 4574 if (!rc) { 4575 if (is_compat_task()) 4576 tmp = compat_ptr(oat_data.ptr); 4577 else 4578 tmp = (void __user *)(unsigned long)oat_data.ptr; 4579 4580 if (copy_to_user(tmp, priv.buffer, 4581 priv.response_len)) { 4582 rc = -EFAULT; 4583 goto out_free; 4584 } 4585 4586 oat_data.response_len = priv.response_len; 4587 4588 if (copy_to_user(udata, &oat_data, 4589 sizeof(struct qeth_query_oat_data))) 4590 rc = -EFAULT; 4591 } 4592 4593 out_free: 4594 vfree(priv.buffer); 4595 out: 4596 return rc; 4597 } 4598 4599 static int qeth_query_card_info_cb(struct qeth_card *card, 4600 struct qeth_reply *reply, unsigned long data) 4601 { 4602 struct carrier_info *carrier_info = (struct carrier_info *)reply->param; 4603 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4604 struct qeth_query_card_info *card_info; 4605 4606 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4607 if (qeth_setadpparms_inspect_rc(cmd)) 4608 return -EIO; 4609 4610 card_info = &cmd->data.setadapterparms.data.card_info; 4611 carrier_info->card_type = card_info->card_type; 4612 carrier_info->port_mode = card_info->port_mode; 4613 carrier_info->port_speed = card_info->port_speed; 4614 return 0; 4615 } 4616 4617 int qeth_query_card_info(struct qeth_card *card, 4618 struct carrier_info *carrier_info) 4619 { 4620 struct qeth_cmd_buffer *iob; 4621 4622 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4623 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4624 return -EOPNOTSUPP; 4625 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0); 4626 if (!iob) 4627 return -ENOMEM; 4628 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4629 (void *)carrier_info); 4630 } 4631 4632 /** 4633 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4634 * @card: pointer to a qeth_card 4635 * 4636 * Returns 4637 * 0, if a MAC address has been set for the card's netdevice 4638 * a return code, for various error conditions 4639 */ 4640 int qeth_vm_request_mac(struct qeth_card *card) 4641 { 4642 struct diag26c_mac_resp *response; 4643 struct diag26c_mac_req *request; 4644 struct ccw_dev_id id; 4645 int rc; 4646 4647 QETH_CARD_TEXT(card, 2, "vmreqmac"); 4648 4649 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4650 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4651 if (!request || !response) { 4652 rc = -ENOMEM; 4653 goto out; 4654 } 4655 4656 ccw_device_get_id(CARD_DDEV(card), &id); 4657 request->resp_buf_len = sizeof(*response); 4658 request->resp_version = DIAG26C_VERSION2; 4659 request->op_code = DIAG26C_GET_MAC; 4660 request->devno = id.devno; 4661 4662 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4663 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4664 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4665 if (rc) 4666 goto out; 4667 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4668 4669 if (request->resp_buf_len < sizeof(*response) || 4670 response->version != request->resp_version) { 4671 rc = -EIO; 4672 QETH_CARD_TEXT(card, 2, "badresp"); 4673 QETH_CARD_HEX(card, 2, &request->resp_buf_len, 4674 sizeof(request->resp_buf_len)); 4675 } else if (!is_valid_ether_addr(response->mac)) { 4676 rc = -EINVAL; 4677 QETH_CARD_TEXT(card, 2, "badmac"); 4678 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN); 4679 } else { 4680 ether_addr_copy(card->dev->dev_addr, response->mac); 4681 } 4682 4683 out: 4684 kfree(response); 4685 kfree(request); 4686 return rc; 4687 } 4688 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4689 4690 static void qeth_determine_capabilities(struct qeth_card *card) 4691 { 4692 struct qeth_channel *channel = &card->data; 4693 struct ccw_device *ddev = channel->ccwdev; 4694 int rc; 4695 int ddev_offline = 0; 4696 4697 QETH_CARD_TEXT(card, 2, "detcapab"); 4698 if (!ddev->online) { 4699 ddev_offline = 1; 4700 rc = ccw_device_set_online(ddev); 4701 if (rc) { 4702 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 4703 goto out; 4704 } 4705 } 4706 4707 rc = qeth_read_conf_data(card); 4708 if (rc) { 4709 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n", 4710 CARD_DEVID(card), rc); 4711 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 4712 goto out_offline; 4713 } 4714 4715 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4716 if (rc) 4717 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 4718 4719 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt); 4720 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1); 4721 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2); 4722 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3); 4723 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt); 4724 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4725 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4726 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4727 dev_info(&card->gdev->dev, 4728 "Completion Queueing supported\n"); 4729 } else { 4730 card->options.cq = QETH_CQ_NOTAVAILABLE; 4731 } 4732 4733 4734 out_offline: 4735 if (ddev_offline == 1) 4736 qeth_stop_channel(channel); 4737 out: 4738 return; 4739 } 4740 4741 static void qeth_qdio_establish_cq(struct qeth_card *card, 4742 struct qdio_buffer **in_sbal_ptrs, 4743 void (**queue_start_poll) 4744 (struct ccw_device *, int, 4745 unsigned long)) 4746 { 4747 int i; 4748 4749 if (card->options.cq == QETH_CQ_ENABLED) { 4750 int offset = QDIO_MAX_BUFFERS_PER_Q * 4751 (card->qdio.no_in_queues - 1); 4752 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4753 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4754 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4755 } 4756 4757 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4758 } 4759 } 4760 4761 static int qeth_qdio_establish(struct qeth_card *card) 4762 { 4763 struct qdio_initialize init_data; 4764 char *qib_param_field; 4765 struct qdio_buffer **in_sbal_ptrs; 4766 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4767 struct qdio_buffer **out_sbal_ptrs; 4768 int i, j, k; 4769 int rc = 0; 4770 4771 QETH_CARD_TEXT(card, 2, "qdioest"); 4772 4773 qib_param_field = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL); 4774 if (!qib_param_field) { 4775 rc = -ENOMEM; 4776 goto out_free_nothing; 4777 } 4778 4779 qeth_create_qib_param_field(card, qib_param_field); 4780 qeth_create_qib_param_field_blkt(card, qib_param_field); 4781 4782 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q, 4783 sizeof(void *), 4784 GFP_KERNEL); 4785 if (!in_sbal_ptrs) { 4786 rc = -ENOMEM; 4787 goto out_free_qib_param; 4788 } 4789 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4790 in_sbal_ptrs[i] = (struct qdio_buffer *) 4791 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4792 } 4793 4794 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), 4795 GFP_KERNEL); 4796 if (!queue_start_poll) { 4797 rc = -ENOMEM; 4798 goto out_free_in_sbals; 4799 } 4800 for (i = 0; i < card->qdio.no_in_queues; ++i) 4801 queue_start_poll[i] = qeth_qdio_start_poll; 4802 4803 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4804 4805 out_sbal_ptrs = 4806 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q, 4807 sizeof(void *), 4808 GFP_KERNEL); 4809 if (!out_sbal_ptrs) { 4810 rc = -ENOMEM; 4811 goto out_free_queue_start_poll; 4812 } 4813 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4814 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4815 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4816 card->qdio.out_qs[i]->bufs[j]->buffer); 4817 } 4818 4819 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4820 init_data.cdev = CARD_DDEV(card); 4821 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT : 4822 QDIO_QETH_QFMT; 4823 init_data.qib_param_field_format = 0; 4824 init_data.qib_param_field = qib_param_field; 4825 init_data.no_input_qs = card->qdio.no_in_queues; 4826 init_data.no_output_qs = card->qdio.no_out_queues; 4827 init_data.input_handler = qeth_qdio_input_handler; 4828 init_data.output_handler = qeth_qdio_output_handler; 4829 init_data.queue_start_poll_array = queue_start_poll; 4830 init_data.int_parm = (unsigned long) card; 4831 init_data.input_sbal_addr_array = in_sbal_ptrs; 4832 init_data.output_sbal_addr_array = out_sbal_ptrs; 4833 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4834 init_data.scan_threshold = IS_IQD(card) ? 0 : 32; 4835 4836 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4837 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4838 rc = qdio_allocate(&init_data); 4839 if (rc) { 4840 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4841 goto out; 4842 } 4843 rc = qdio_establish(&init_data); 4844 if (rc) { 4845 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4846 qdio_free(CARD_DDEV(card)); 4847 } 4848 } 4849 4850 switch (card->options.cq) { 4851 case QETH_CQ_ENABLED: 4852 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4853 break; 4854 case QETH_CQ_DISABLED: 4855 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4856 break; 4857 default: 4858 break; 4859 } 4860 out: 4861 kfree(out_sbal_ptrs); 4862 out_free_queue_start_poll: 4863 kfree(queue_start_poll); 4864 out_free_in_sbals: 4865 kfree(in_sbal_ptrs); 4866 out_free_qib_param: 4867 kfree(qib_param_field); 4868 out_free_nothing: 4869 return rc; 4870 } 4871 4872 static void qeth_core_free_card(struct qeth_card *card) 4873 { 4874 QETH_CARD_TEXT(card, 2, "freecrd"); 4875 qeth_clean_channel(&card->read); 4876 qeth_clean_channel(&card->write); 4877 qeth_clean_channel(&card->data); 4878 qeth_put_cmd(card->read_cmd); 4879 destroy_workqueue(card->event_wq); 4880 unregister_service_level(&card->qeth_service_level); 4881 dev_set_drvdata(&card->gdev->dev, NULL); 4882 kfree(card); 4883 } 4884 4885 void qeth_trace_features(struct qeth_card *card) 4886 { 4887 QETH_CARD_TEXT(card, 2, "features"); 4888 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 4889 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 4890 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 4891 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 4892 sizeof(card->info.diagass_support)); 4893 } 4894 EXPORT_SYMBOL_GPL(qeth_trace_features); 4895 4896 static struct ccw_device_id qeth_ids[] = { 4897 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 4898 .driver_info = QETH_CARD_TYPE_OSD}, 4899 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 4900 .driver_info = QETH_CARD_TYPE_IQD}, 4901 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 4902 .driver_info = QETH_CARD_TYPE_OSN}, 4903 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 4904 .driver_info = QETH_CARD_TYPE_OSM}, 4905 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 4906 .driver_info = QETH_CARD_TYPE_OSX}, 4907 {}, 4908 }; 4909 MODULE_DEVICE_TABLE(ccw, qeth_ids); 4910 4911 static struct ccw_driver qeth_ccw_driver = { 4912 .driver = { 4913 .owner = THIS_MODULE, 4914 .name = "qeth", 4915 }, 4916 .ids = qeth_ids, 4917 .probe = ccwgroup_probe_ccwdev, 4918 .remove = ccwgroup_remove_ccwdev, 4919 }; 4920 4921 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok) 4922 { 4923 int retries = 3; 4924 int rc; 4925 4926 QETH_CARD_TEXT(card, 2, "hrdsetup"); 4927 atomic_set(&card->force_alloc_skb, 0); 4928 rc = qeth_update_from_chp_desc(card); 4929 if (rc) 4930 return rc; 4931 retry: 4932 if (retries < 3) 4933 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n", 4934 CARD_DEVID(card)); 4935 rc = qeth_qdio_clear_card(card, !IS_IQD(card)); 4936 qeth_stop_channel(&card->data); 4937 qeth_stop_channel(&card->write); 4938 qeth_stop_channel(&card->read); 4939 qdio_free(CARD_DDEV(card)); 4940 rc = ccw_device_set_online(CARD_RDEV(card)); 4941 if (rc) 4942 goto retriable; 4943 rc = ccw_device_set_online(CARD_WDEV(card)); 4944 if (rc) 4945 goto retriable; 4946 rc = ccw_device_set_online(CARD_DDEV(card)); 4947 if (rc) 4948 goto retriable; 4949 retriable: 4950 if (rc == -ERESTARTSYS) { 4951 QETH_CARD_TEXT(card, 2, "break1"); 4952 return rc; 4953 } else if (rc) { 4954 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 4955 if (--retries < 0) 4956 goto out; 4957 else 4958 goto retry; 4959 } 4960 qeth_determine_capabilities(card); 4961 qeth_init_tokens(card); 4962 qeth_init_func_level(card); 4963 4964 rc = qeth_idx_activate_read_channel(card); 4965 if (rc == -EINTR) { 4966 QETH_CARD_TEXT(card, 2, "break2"); 4967 return rc; 4968 } else if (rc) { 4969 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 4970 if (--retries < 0) 4971 goto out; 4972 else 4973 goto retry; 4974 } 4975 4976 rc = qeth_idx_activate_write_channel(card); 4977 if (rc == -EINTR) { 4978 QETH_CARD_TEXT(card, 2, "break3"); 4979 return rc; 4980 } else if (rc) { 4981 QETH_CARD_TEXT_(card, 2, "4err%d", rc); 4982 if (--retries < 0) 4983 goto out; 4984 else 4985 goto retry; 4986 } 4987 card->read_or_write_problem = 0; 4988 rc = qeth_mpc_initialize(card); 4989 if (rc) { 4990 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 4991 goto out; 4992 } 4993 4994 rc = qeth_send_startlan(card); 4995 if (rc) { 4996 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 4997 if (rc == -ENETDOWN) { 4998 dev_warn(&card->gdev->dev, "The LAN is offline\n"); 4999 *carrier_ok = false; 5000 } else { 5001 goto out; 5002 } 5003 } else { 5004 *carrier_ok = true; 5005 } 5006 5007 card->options.ipa4.supported_funcs = 0; 5008 card->options.ipa6.supported_funcs = 0; 5009 card->options.adp.supported_funcs = 0; 5010 card->options.sbp.supported_funcs = 0; 5011 card->info.diagass_support = 0; 5012 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5013 if (rc == -ENOMEM) 5014 goto out; 5015 if (qeth_is_supported(card, IPA_IPV6)) { 5016 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 5017 if (rc == -ENOMEM) 5018 goto out; 5019 } 5020 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5021 rc = qeth_query_setadapterparms(card); 5022 if (rc < 0) { 5023 QETH_CARD_TEXT_(card, 2, "7err%d", rc); 5024 goto out; 5025 } 5026 } 5027 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5028 rc = qeth_query_setdiagass(card); 5029 if (rc) 5030 QETH_CARD_TEXT_(card, 2, "8err%d", rc); 5031 } 5032 5033 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) || 5034 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))) 5035 card->info.hwtrap = 0; 5036 5037 rc = qeth_set_access_ctrl_online(card, 0); 5038 if (rc) 5039 goto out; 5040 5041 return 0; 5042 out: 5043 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5044 "an error on the device\n"); 5045 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n", 5046 CARD_DEVID(card), rc); 5047 return rc; 5048 } 5049 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5050 5051 static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len) 5052 { 5053 struct page *page = virt_to_page(data); 5054 unsigned int next_frag; 5055 5056 next_frag = skb_shinfo(skb)->nr_frags; 5057 get_page(page); 5058 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len, 5059 data_len); 5060 } 5061 5062 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5063 { 5064 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5065 } 5066 5067 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5068 struct qeth_qdio_buffer *qethbuffer, 5069 struct qdio_buffer_element **__element, int *__offset, 5070 struct qeth_hdr **hdr) 5071 { 5072 struct qdio_buffer_element *element = *__element; 5073 struct qdio_buffer *buffer = qethbuffer->buffer; 5074 unsigned int linear_len = 0; 5075 int offset = *__offset; 5076 bool use_rx_sg = false; 5077 unsigned int headroom; 5078 struct sk_buff *skb; 5079 int skb_len = 0; 5080 5081 next_packet: 5082 /* qeth_hdr must not cross element boundaries */ 5083 while (element->length < offset + sizeof(struct qeth_hdr)) { 5084 if (qeth_is_last_sbale(element)) 5085 return NULL; 5086 element++; 5087 offset = 0; 5088 } 5089 *hdr = element->addr + offset; 5090 5091 offset += sizeof(struct qeth_hdr); 5092 skb = NULL; 5093 5094 switch ((*hdr)->hdr.l2.id) { 5095 case QETH_HEADER_TYPE_LAYER2: 5096 skb_len = (*hdr)->hdr.l2.pkt_length; 5097 linear_len = ETH_HLEN; 5098 headroom = 0; 5099 break; 5100 case QETH_HEADER_TYPE_LAYER3: 5101 skb_len = (*hdr)->hdr.l3.length; 5102 if (!IS_LAYER3(card)) { 5103 QETH_CARD_STAT_INC(card, rx_dropped_notsupp); 5104 goto walk_packet; 5105 } 5106 5107 if ((*hdr)->hdr.l3.flags & QETH_HDR_PASSTHRU) { 5108 linear_len = ETH_HLEN; 5109 headroom = 0; 5110 break; 5111 } 5112 5113 if ((*hdr)->hdr.l3.flags & QETH_HDR_IPV6) 5114 linear_len = sizeof(struct ipv6hdr); 5115 else 5116 linear_len = sizeof(struct iphdr); 5117 headroom = ETH_HLEN; 5118 break; 5119 case QETH_HEADER_TYPE_OSN: 5120 skb_len = (*hdr)->hdr.osn.pdu_length; 5121 if (!IS_OSN(card)) { 5122 QETH_CARD_STAT_INC(card, rx_dropped_notsupp); 5123 goto walk_packet; 5124 } 5125 5126 linear_len = skb_len; 5127 headroom = sizeof(struct qeth_hdr); 5128 break; 5129 default: 5130 if ((*hdr)->hdr.l2.id & QETH_HEADER_MASK_INVAL) 5131 QETH_CARD_STAT_INC(card, rx_frame_errors); 5132 else 5133 QETH_CARD_STAT_INC(card, rx_dropped_notsupp); 5134 5135 /* Can't determine packet length, drop the whole buffer. */ 5136 return NULL; 5137 } 5138 5139 if (skb_len < linear_len) { 5140 QETH_CARD_STAT_INC(card, rx_dropped_runt); 5141 goto walk_packet; 5142 } 5143 5144 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) || 5145 ((skb_len >= card->options.rx_sg_cb) && 5146 !atomic_read(&card->force_alloc_skb) && 5147 !IS_OSN(card)); 5148 5149 if (use_rx_sg && qethbuffer->rx_skb) { 5150 /* QETH_CQ_ENABLED only: */ 5151 skb = qethbuffer->rx_skb; 5152 qethbuffer->rx_skb = NULL; 5153 } else { 5154 if (!use_rx_sg) 5155 linear_len = skb_len; 5156 skb = napi_alloc_skb(&card->napi, linear_len + headroom); 5157 } 5158 5159 if (!skb) 5160 QETH_CARD_STAT_INC(card, rx_dropped_nomem); 5161 else if (headroom) 5162 skb_reserve(skb, headroom); 5163 5164 walk_packet: 5165 while (skb_len) { 5166 int data_len = min(skb_len, (int)(element->length - offset)); 5167 char *data = element->addr + offset; 5168 5169 skb_len -= data_len; 5170 offset += data_len; 5171 5172 /* Extract data from current element: */ 5173 if (skb && data_len) { 5174 if (linear_len) { 5175 unsigned int copy_len; 5176 5177 copy_len = min_t(unsigned int, linear_len, 5178 data_len); 5179 5180 skb_put_data(skb, data, copy_len); 5181 linear_len -= copy_len; 5182 data_len -= copy_len; 5183 data += copy_len; 5184 } 5185 5186 if (data_len) 5187 qeth_create_skb_frag(skb, data, data_len); 5188 } 5189 5190 /* Step forward to next element: */ 5191 if (skb_len) { 5192 if (qeth_is_last_sbale(element)) { 5193 QETH_CARD_TEXT(card, 4, "unexeob"); 5194 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5195 if (skb) { 5196 dev_kfree_skb_any(skb); 5197 QETH_CARD_STAT_INC(card, 5198 rx_length_errors); 5199 } 5200 return NULL; 5201 } 5202 element++; 5203 offset = 0; 5204 } 5205 } 5206 5207 /* This packet was skipped, go get another one: */ 5208 if (!skb) 5209 goto next_packet; 5210 5211 *__element = element; 5212 *__offset = offset; 5213 if (use_rx_sg) { 5214 QETH_CARD_STAT_INC(card, rx_sg_skbs); 5215 QETH_CARD_STAT_ADD(card, rx_sg_frags, 5216 skb_shinfo(skb)->nr_frags); 5217 } 5218 return skb; 5219 } 5220 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5221 5222 int qeth_poll(struct napi_struct *napi, int budget) 5223 { 5224 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5225 int work_done = 0; 5226 struct qeth_qdio_buffer *buffer; 5227 int done; 5228 int new_budget = budget; 5229 5230 while (1) { 5231 if (!card->rx.b_count) { 5232 card->rx.qdio_err = 0; 5233 card->rx.b_count = qdio_get_next_buffers( 5234 card->data.ccwdev, 0, &card->rx.b_index, 5235 &card->rx.qdio_err); 5236 if (card->rx.b_count <= 0) { 5237 card->rx.b_count = 0; 5238 break; 5239 } 5240 card->rx.b_element = 5241 &card->qdio.in_q->bufs[card->rx.b_index] 5242 .buffer->element[0]; 5243 card->rx.e_offset = 0; 5244 } 5245 5246 while (card->rx.b_count) { 5247 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5248 if (!(card->rx.qdio_err && 5249 qeth_check_qdio_errors(card, buffer->buffer, 5250 card->rx.qdio_err, "qinerr"))) 5251 work_done += 5252 card->discipline->process_rx_buffer( 5253 card, new_budget, &done); 5254 else 5255 done = 1; 5256 5257 if (done) { 5258 QETH_CARD_STAT_INC(card, rx_bufs); 5259 qeth_put_buffer_pool_entry(card, 5260 buffer->pool_entry); 5261 qeth_queue_input_buffer(card, card->rx.b_index); 5262 card->rx.b_count--; 5263 if (card->rx.b_count) { 5264 card->rx.b_index = 5265 QDIO_BUFNR(card->rx.b_index + 1); 5266 card->rx.b_element = 5267 &card->qdio.in_q 5268 ->bufs[card->rx.b_index] 5269 .buffer->element[0]; 5270 card->rx.e_offset = 0; 5271 } 5272 } 5273 5274 if (work_done >= budget) 5275 goto out; 5276 else 5277 new_budget = budget - work_done; 5278 } 5279 } 5280 5281 if (napi_complete_done(napi, work_done) && 5282 qdio_start_irq(CARD_DDEV(card), 0)) 5283 napi_schedule(napi); 5284 out: 5285 return work_done; 5286 } 5287 EXPORT_SYMBOL_GPL(qeth_poll); 5288 5289 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue, 5290 unsigned int bidx, bool error, int budget) 5291 { 5292 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx]; 5293 u8 sflags = buffer->buffer->element[15].sflags; 5294 struct qeth_card *card = queue->card; 5295 5296 if (queue->bufstates && (queue->bufstates[bidx].flags & 5297 QDIO_OUTBUF_STATE_FLAG_PENDING)) { 5298 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 5299 5300 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 5301 QETH_QDIO_BUF_PENDING) == 5302 QETH_QDIO_BUF_PRIMED) 5303 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING); 5304 5305 QETH_CARD_TEXT_(card, 5, "pel%u", bidx); 5306 5307 /* prepare the queue slot for re-use: */ 5308 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements); 5309 if (qeth_init_qdio_out_buf(queue, bidx)) { 5310 QETH_CARD_TEXT(card, 2, "outofbuf"); 5311 qeth_schedule_recovery(card); 5312 } 5313 5314 return; 5315 } 5316 5317 if (card->options.cq == QETH_CQ_ENABLED) 5318 qeth_notify_skbs(queue, buffer, 5319 qeth_compute_cq_notification(sflags, 0)); 5320 qeth_clear_output_buffer(queue, buffer, error, budget); 5321 } 5322 5323 static int qeth_tx_poll(struct napi_struct *napi, int budget) 5324 { 5325 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi); 5326 unsigned int queue_no = queue->queue_no; 5327 struct qeth_card *card = queue->card; 5328 struct net_device *dev = card->dev; 5329 unsigned int work_done = 0; 5330 struct netdev_queue *txq; 5331 5332 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no)); 5333 5334 while (1) { 5335 unsigned int start, error, i; 5336 unsigned int packets = 0; 5337 unsigned int bytes = 0; 5338 int completed; 5339 5340 if (qeth_out_queue_is_empty(queue)) { 5341 napi_complete(napi); 5342 return 0; 5343 } 5344 5345 /* Give the CPU a breather: */ 5346 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) { 5347 QETH_TXQ_STAT_INC(queue, completion_yield); 5348 if (napi_complete_done(napi, 0)) 5349 napi_schedule(napi); 5350 return 0; 5351 } 5352 5353 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false, 5354 &start, &error); 5355 if (completed <= 0) { 5356 /* Ensure we see TX completion for pending work: */ 5357 if (napi_complete_done(napi, 0)) 5358 qeth_tx_arm_timer(queue); 5359 return 0; 5360 } 5361 5362 for (i = start; i < start + completed; i++) { 5363 struct qeth_qdio_out_buffer *buffer; 5364 unsigned int bidx = QDIO_BUFNR(i); 5365 5366 buffer = queue->bufs[bidx]; 5367 packets += skb_queue_len(&buffer->skb_list); 5368 bytes += buffer->bytes; 5369 5370 qeth_handle_send_error(card, buffer, error); 5371 qeth_iqd_tx_complete(queue, bidx, error, budget); 5372 qeth_cleanup_handled_pending(queue, bidx, false); 5373 } 5374 5375 netdev_tx_completed_queue(txq, packets, bytes); 5376 atomic_sub(completed, &queue->used_buffers); 5377 work_done += completed; 5378 5379 /* xmit may have observed the full-condition, but not yet 5380 * stopped the txq. In which case the code below won't trigger. 5381 * So before returning, xmit will re-check the txq's fill level 5382 * and wake it up if needed. 5383 */ 5384 if (netif_tx_queue_stopped(txq) && 5385 !qeth_out_queue_is_full(queue)) 5386 netif_tx_wake_queue(txq); 5387 } 5388 } 5389 5390 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5391 { 5392 if (!cmd->hdr.return_code) 5393 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5394 return cmd->hdr.return_code; 5395 } 5396 5397 static int qeth_setassparms_get_caps_cb(struct qeth_card *card, 5398 struct qeth_reply *reply, 5399 unsigned long data) 5400 { 5401 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5402 struct qeth_ipa_caps *caps = reply->param; 5403 5404 if (qeth_setassparms_inspect_rc(cmd)) 5405 return -EIO; 5406 5407 caps->supported = cmd->data.setassparms.data.caps.supported; 5408 caps->enabled = cmd->data.setassparms.data.caps.enabled; 5409 return 0; 5410 } 5411 5412 int qeth_setassparms_cb(struct qeth_card *card, 5413 struct qeth_reply *reply, unsigned long data) 5414 { 5415 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5416 5417 QETH_CARD_TEXT(card, 4, "defadpcb"); 5418 5419 if (cmd->hdr.return_code) 5420 return -EIO; 5421 5422 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5423 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5424 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5425 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5426 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5427 return 0; 5428 } 5429 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5430 5431 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5432 enum qeth_ipa_funcs ipa_func, 5433 u16 cmd_code, 5434 unsigned int data_length, 5435 enum qeth_prot_versions prot) 5436 { 5437 struct qeth_ipacmd_setassparms *setassparms; 5438 struct qeth_ipacmd_setassparms_hdr *hdr; 5439 struct qeth_cmd_buffer *iob; 5440 5441 QETH_CARD_TEXT(card, 4, "getasscm"); 5442 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot, 5443 data_length + 5444 offsetof(struct qeth_ipacmd_setassparms, 5445 data)); 5446 if (!iob) 5447 return NULL; 5448 5449 setassparms = &__ipa_cmd(iob)->data.setassparms; 5450 setassparms->assist_no = ipa_func; 5451 5452 hdr = &setassparms->hdr; 5453 hdr->length = sizeof(*hdr) + data_length; 5454 hdr->command_code = cmd_code; 5455 return iob; 5456 } 5457 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5458 5459 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 5460 enum qeth_ipa_funcs ipa_func, 5461 u16 cmd_code, u32 *data, 5462 enum qeth_prot_versions prot) 5463 { 5464 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0; 5465 struct qeth_cmd_buffer *iob; 5466 5467 QETH_CARD_TEXT_(card, 4, "simassp%i", prot); 5468 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); 5469 if (!iob) 5470 return -ENOMEM; 5471 5472 if (data) 5473 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data; 5474 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL); 5475 } 5476 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 5477 5478 static void qeth_unregister_dbf_views(void) 5479 { 5480 int x; 5481 for (x = 0; x < QETH_DBF_INFOS; x++) { 5482 debug_unregister(qeth_dbf[x].id); 5483 qeth_dbf[x].id = NULL; 5484 } 5485 } 5486 5487 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5488 { 5489 char dbf_txt_buf[32]; 5490 va_list args; 5491 5492 if (!debug_level_enabled(id, level)) 5493 return; 5494 va_start(args, fmt); 5495 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5496 va_end(args); 5497 debug_text_event(id, level, dbf_txt_buf); 5498 } 5499 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5500 5501 static int qeth_register_dbf_views(void) 5502 { 5503 int ret; 5504 int x; 5505 5506 for (x = 0; x < QETH_DBF_INFOS; x++) { 5507 /* register the areas */ 5508 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5509 qeth_dbf[x].pages, 5510 qeth_dbf[x].areas, 5511 qeth_dbf[x].len); 5512 if (qeth_dbf[x].id == NULL) { 5513 qeth_unregister_dbf_views(); 5514 return -ENOMEM; 5515 } 5516 5517 /* register a view */ 5518 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5519 if (ret) { 5520 qeth_unregister_dbf_views(); 5521 return ret; 5522 } 5523 5524 /* set a passing level */ 5525 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5526 } 5527 5528 return 0; 5529 } 5530 5531 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */ 5532 5533 int qeth_core_load_discipline(struct qeth_card *card, 5534 enum qeth_discipline_id discipline) 5535 { 5536 mutex_lock(&qeth_mod_mutex); 5537 switch (discipline) { 5538 case QETH_DISCIPLINE_LAYER3: 5539 card->discipline = try_then_request_module( 5540 symbol_get(qeth_l3_discipline), "qeth_l3"); 5541 break; 5542 case QETH_DISCIPLINE_LAYER2: 5543 card->discipline = try_then_request_module( 5544 symbol_get(qeth_l2_discipline), "qeth_l2"); 5545 break; 5546 default: 5547 break; 5548 } 5549 mutex_unlock(&qeth_mod_mutex); 5550 5551 if (!card->discipline) { 5552 dev_err(&card->gdev->dev, "There is no kernel module to " 5553 "support discipline %d\n", discipline); 5554 return -EINVAL; 5555 } 5556 5557 card->options.layer = discipline; 5558 return 0; 5559 } 5560 5561 void qeth_core_free_discipline(struct qeth_card *card) 5562 { 5563 if (IS_LAYER2(card)) 5564 symbol_put(qeth_l2_discipline); 5565 else 5566 symbol_put(qeth_l3_discipline); 5567 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 5568 card->discipline = NULL; 5569 } 5570 5571 const struct device_type qeth_generic_devtype = { 5572 .name = "qeth_generic", 5573 .groups = qeth_generic_attr_groups, 5574 }; 5575 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5576 5577 static const struct device_type qeth_osn_devtype = { 5578 .name = "qeth_osn", 5579 .groups = qeth_osn_attr_groups, 5580 }; 5581 5582 #define DBF_NAME_LEN 20 5583 5584 struct qeth_dbf_entry { 5585 char dbf_name[DBF_NAME_LEN]; 5586 debug_info_t *dbf_info; 5587 struct list_head dbf_list; 5588 }; 5589 5590 static LIST_HEAD(qeth_dbf_list); 5591 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5592 5593 static debug_info_t *qeth_get_dbf_entry(char *name) 5594 { 5595 struct qeth_dbf_entry *entry; 5596 debug_info_t *rc = NULL; 5597 5598 mutex_lock(&qeth_dbf_list_mutex); 5599 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5600 if (strcmp(entry->dbf_name, name) == 0) { 5601 rc = entry->dbf_info; 5602 break; 5603 } 5604 } 5605 mutex_unlock(&qeth_dbf_list_mutex); 5606 return rc; 5607 } 5608 5609 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5610 { 5611 struct qeth_dbf_entry *new_entry; 5612 5613 card->debug = debug_register(name, 2, 1, 8); 5614 if (!card->debug) { 5615 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5616 goto err; 5617 } 5618 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5619 goto err_dbg; 5620 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5621 if (!new_entry) 5622 goto err_dbg; 5623 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5624 new_entry->dbf_info = card->debug; 5625 mutex_lock(&qeth_dbf_list_mutex); 5626 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5627 mutex_unlock(&qeth_dbf_list_mutex); 5628 5629 return 0; 5630 5631 err_dbg: 5632 debug_unregister(card->debug); 5633 err: 5634 return -ENOMEM; 5635 } 5636 5637 static void qeth_clear_dbf_list(void) 5638 { 5639 struct qeth_dbf_entry *entry, *tmp; 5640 5641 mutex_lock(&qeth_dbf_list_mutex); 5642 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5643 list_del(&entry->dbf_list); 5644 debug_unregister(entry->dbf_info); 5645 kfree(entry); 5646 } 5647 mutex_unlock(&qeth_dbf_list_mutex); 5648 } 5649 5650 static struct net_device *qeth_alloc_netdev(struct qeth_card *card) 5651 { 5652 struct net_device *dev; 5653 5654 switch (card->info.type) { 5655 case QETH_CARD_TYPE_IQD: 5656 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN, 5657 ether_setup, QETH_MAX_QUEUES, 1); 5658 break; 5659 case QETH_CARD_TYPE_OSM: 5660 dev = alloc_etherdev(0); 5661 break; 5662 case QETH_CARD_TYPE_OSN: 5663 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); 5664 break; 5665 default: 5666 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1); 5667 } 5668 5669 if (!dev) 5670 return NULL; 5671 5672 dev->ml_priv = card; 5673 dev->watchdog_timeo = QETH_TX_TIMEOUT; 5674 dev->min_mtu = IS_OSN(card) ? 64 : 576; 5675 /* initialized when device first goes online: */ 5676 dev->max_mtu = 0; 5677 dev->mtu = 0; 5678 SET_NETDEV_DEV(dev, &card->gdev->dev); 5679 netif_carrier_off(dev); 5680 5681 if (IS_OSN(card)) { 5682 dev->ethtool_ops = &qeth_osn_ethtool_ops; 5683 } else { 5684 dev->ethtool_ops = &qeth_ethtool_ops; 5685 dev->priv_flags &= ~IFF_TX_SKB_SHARING; 5686 dev->hw_features |= NETIF_F_SG; 5687 dev->vlan_features |= NETIF_F_SG; 5688 if (IS_IQD(card)) { 5689 dev->features |= NETIF_F_SG; 5690 if (netif_set_real_num_tx_queues(dev, 5691 QETH_IQD_MIN_TXQ)) { 5692 free_netdev(dev); 5693 return NULL; 5694 } 5695 } 5696 } 5697 5698 return dev; 5699 } 5700 5701 struct net_device *qeth_clone_netdev(struct net_device *orig) 5702 { 5703 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv); 5704 5705 if (!clone) 5706 return NULL; 5707 5708 clone->dev_port = orig->dev_port; 5709 return clone; 5710 } 5711 5712 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5713 { 5714 struct qeth_card *card; 5715 struct device *dev; 5716 int rc; 5717 enum qeth_discipline_id enforced_disc; 5718 char dbf_name[DBF_NAME_LEN]; 5719 5720 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5721 5722 dev = &gdev->dev; 5723 if (!get_device(dev)) 5724 return -ENODEV; 5725 5726 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5727 5728 card = qeth_alloc_card(gdev); 5729 if (!card) { 5730 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5731 rc = -ENOMEM; 5732 goto err_dev; 5733 } 5734 5735 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5736 dev_name(&gdev->dev)); 5737 card->debug = qeth_get_dbf_entry(dbf_name); 5738 if (!card->debug) { 5739 rc = qeth_add_dbf_entry(card, dbf_name); 5740 if (rc) 5741 goto err_card; 5742 } 5743 5744 qeth_setup_card(card); 5745 card->dev = qeth_alloc_netdev(card); 5746 if (!card->dev) { 5747 rc = -ENOMEM; 5748 goto err_card; 5749 } 5750 5751 card->qdio.no_out_queues = card->dev->num_tx_queues; 5752 rc = qeth_update_from_chp_desc(card); 5753 if (rc) 5754 goto err_chp_desc; 5755 qeth_determine_capabilities(card); 5756 qeth_set_blkt_defaults(card); 5757 5758 enforced_disc = qeth_enforce_discipline(card); 5759 switch (enforced_disc) { 5760 case QETH_DISCIPLINE_UNDETERMINED: 5761 gdev->dev.type = &qeth_generic_devtype; 5762 break; 5763 default: 5764 card->info.layer_enforced = true; 5765 rc = qeth_core_load_discipline(card, enforced_disc); 5766 if (rc) 5767 goto err_load; 5768 5769 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype : 5770 card->discipline->devtype; 5771 rc = card->discipline->setup(card->gdev); 5772 if (rc) 5773 goto err_disc; 5774 break; 5775 } 5776 5777 return 0; 5778 5779 err_disc: 5780 qeth_core_free_discipline(card); 5781 err_load: 5782 err_chp_desc: 5783 free_netdev(card->dev); 5784 err_card: 5785 qeth_core_free_card(card); 5786 err_dev: 5787 put_device(dev); 5788 return rc; 5789 } 5790 5791 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5792 { 5793 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5794 5795 QETH_CARD_TEXT(card, 2, "removedv"); 5796 5797 if (card->discipline) { 5798 card->discipline->remove(gdev); 5799 qeth_core_free_discipline(card); 5800 } 5801 5802 qeth_free_qdio_queues(card); 5803 5804 free_netdev(card->dev); 5805 qeth_core_free_card(card); 5806 put_device(&gdev->dev); 5807 } 5808 5809 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5810 { 5811 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5812 int rc = 0; 5813 enum qeth_discipline_id def_discipline; 5814 5815 if (!card->discipline) { 5816 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : 5817 QETH_DISCIPLINE_LAYER2; 5818 rc = qeth_core_load_discipline(card, def_discipline); 5819 if (rc) 5820 goto err; 5821 rc = card->discipline->setup(card->gdev); 5822 if (rc) { 5823 qeth_core_free_discipline(card); 5824 goto err; 5825 } 5826 } 5827 rc = card->discipline->set_online(gdev); 5828 err: 5829 return rc; 5830 } 5831 5832 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5833 { 5834 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5835 return card->discipline->set_offline(gdev); 5836 } 5837 5838 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5839 { 5840 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5841 qeth_set_allowed_threads(card, 0, 1); 5842 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5843 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5844 qeth_qdio_clear_card(card, 0); 5845 qeth_drain_output_queues(card); 5846 qdio_free(CARD_DDEV(card)); 5847 } 5848 5849 static int qeth_suspend(struct ccwgroup_device *gdev) 5850 { 5851 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5852 5853 qeth_set_allowed_threads(card, 0, 1); 5854 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 5855 if (gdev->state == CCWGROUP_OFFLINE) 5856 return 0; 5857 5858 card->discipline->set_offline(gdev); 5859 return 0; 5860 } 5861 5862 static int qeth_resume(struct ccwgroup_device *gdev) 5863 { 5864 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5865 int rc; 5866 5867 rc = card->discipline->set_online(gdev); 5868 5869 qeth_set_allowed_threads(card, 0xffffffff, 0); 5870 if (rc) 5871 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n"); 5872 return rc; 5873 } 5874 5875 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5876 size_t count) 5877 { 5878 int err; 5879 5880 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3, 5881 buf); 5882 5883 return err ? err : count; 5884 } 5885 static DRIVER_ATTR_WO(group); 5886 5887 static struct attribute *qeth_drv_attrs[] = { 5888 &driver_attr_group.attr, 5889 NULL, 5890 }; 5891 static struct attribute_group qeth_drv_attr_group = { 5892 .attrs = qeth_drv_attrs, 5893 }; 5894 static const struct attribute_group *qeth_drv_attr_groups[] = { 5895 &qeth_drv_attr_group, 5896 NULL, 5897 }; 5898 5899 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5900 .driver = { 5901 .groups = qeth_drv_attr_groups, 5902 .owner = THIS_MODULE, 5903 .name = "qeth", 5904 }, 5905 .ccw_driver = &qeth_ccw_driver, 5906 .setup = qeth_core_probe_device, 5907 .remove = qeth_core_remove_device, 5908 .set_online = qeth_core_set_online, 5909 .set_offline = qeth_core_set_offline, 5910 .shutdown = qeth_core_shutdown, 5911 .prepare = NULL, 5912 .complete = NULL, 5913 .freeze = qeth_suspend, 5914 .thaw = qeth_resume, 5915 .restore = qeth_resume, 5916 }; 5917 5918 struct qeth_card *qeth_get_card_by_busid(char *bus_id) 5919 { 5920 struct ccwgroup_device *gdev; 5921 struct qeth_card *card; 5922 5923 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id); 5924 if (!gdev) 5925 return NULL; 5926 5927 card = dev_get_drvdata(&gdev->dev); 5928 put_device(&gdev->dev); 5929 return card; 5930 } 5931 EXPORT_SYMBOL_GPL(qeth_get_card_by_busid); 5932 5933 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5934 { 5935 struct qeth_card *card = dev->ml_priv; 5936 struct mii_ioctl_data *mii_data; 5937 int rc = 0; 5938 5939 if (!card) 5940 return -ENODEV; 5941 5942 switch (cmd) { 5943 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5944 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5945 break; 5946 case SIOC_QETH_GET_CARD_TYPE: 5947 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) && 5948 !IS_VM_NIC(card)) 5949 return 1; 5950 return 0; 5951 case SIOCGMIIPHY: 5952 mii_data = if_mii(rq); 5953 mii_data->phy_id = 0; 5954 break; 5955 case SIOCGMIIREG: 5956 mii_data = if_mii(rq); 5957 if (mii_data->phy_id != 0) 5958 rc = -EINVAL; 5959 else 5960 mii_data->val_out = qeth_mdio_read(dev, 5961 mii_data->phy_id, mii_data->reg_num); 5962 break; 5963 case SIOC_QETH_QUERY_OAT: 5964 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5965 break; 5966 default: 5967 if (card->discipline->do_ioctl) 5968 rc = card->discipline->do_ioctl(dev, rq, cmd); 5969 else 5970 rc = -EOPNOTSUPP; 5971 } 5972 if (rc) 5973 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5974 return rc; 5975 } 5976 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5977 5978 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply, 5979 unsigned long data) 5980 { 5981 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5982 u32 *features = reply->param; 5983 5984 if (qeth_setassparms_inspect_rc(cmd)) 5985 return -EIO; 5986 5987 *features = cmd->data.setassparms.data.flags_32bit; 5988 return 0; 5989 } 5990 5991 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype, 5992 enum qeth_prot_versions prot) 5993 { 5994 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP, 5995 NULL, prot); 5996 } 5997 5998 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, 5999 enum qeth_prot_versions prot) 6000 { 6001 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; 6002 struct qeth_cmd_buffer *iob; 6003 struct qeth_ipa_caps caps; 6004 u32 features; 6005 int rc; 6006 6007 /* some L3 HW requires combined L3+L4 csum offload: */ 6008 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 && 6009 cstype == IPA_OUTBOUND_CHECKSUM) 6010 required_features |= QETH_IPA_CHECKSUM_IP_HDR; 6011 6012 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6013 prot); 6014 if (!iob) 6015 return -ENOMEM; 6016 6017 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features); 6018 if (rc) 6019 return rc; 6020 6021 if ((required_features & features) != required_features) { 6022 qeth_set_csum_off(card, cstype, prot); 6023 return -EOPNOTSUPP; 6024 } 6025 6026 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6027 SETASS_DATA_SIZEOF(flags_32bit), 6028 prot); 6029 if (!iob) { 6030 qeth_set_csum_off(card, cstype, prot); 6031 return -ENOMEM; 6032 } 6033 6034 if (features & QETH_IPA_CHECKSUM_LP2LP) 6035 required_features |= QETH_IPA_CHECKSUM_LP2LP; 6036 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features; 6037 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); 6038 if (rc) { 6039 qeth_set_csum_off(card, cstype, prot); 6040 return rc; 6041 } 6042 6043 if (!qeth_ipa_caps_supported(&caps, required_features) || 6044 !qeth_ipa_caps_enabled(&caps, required_features)) { 6045 qeth_set_csum_off(card, cstype, prot); 6046 return -EOPNOTSUPP; 6047 } 6048 6049 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", 6050 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); 6051 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) && 6052 cstype == IPA_OUTBOUND_CHECKSUM) 6053 dev_warn(&card->gdev->dev, 6054 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6055 QETH_CARD_IFNAME(card)); 6056 return 0; 6057 } 6058 6059 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, 6060 enum qeth_prot_versions prot) 6061 { 6062 return on ? qeth_set_csum_on(card, cstype, prot) : 6063 qeth_set_csum_off(card, cstype, prot); 6064 } 6065 6066 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply, 6067 unsigned long data) 6068 { 6069 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6070 struct qeth_tso_start_data *tso_data = reply->param; 6071 6072 if (qeth_setassparms_inspect_rc(cmd)) 6073 return -EIO; 6074 6075 tso_data->mss = cmd->data.setassparms.data.tso.mss; 6076 tso_data->supported = cmd->data.setassparms.data.tso.supported; 6077 return 0; 6078 } 6079 6080 static int qeth_set_tso_off(struct qeth_card *card, 6081 enum qeth_prot_versions prot) 6082 { 6083 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO, 6084 IPA_CMD_ASS_STOP, NULL, prot); 6085 } 6086 6087 static int qeth_set_tso_on(struct qeth_card *card, 6088 enum qeth_prot_versions prot) 6089 { 6090 struct qeth_tso_start_data tso_data; 6091 struct qeth_cmd_buffer *iob; 6092 struct qeth_ipa_caps caps; 6093 int rc; 6094 6095 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6096 IPA_CMD_ASS_START, 0, prot); 6097 if (!iob) 6098 return -ENOMEM; 6099 6100 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data); 6101 if (rc) 6102 return rc; 6103 6104 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) { 6105 qeth_set_tso_off(card, prot); 6106 return -EOPNOTSUPP; 6107 } 6108 6109 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6110 IPA_CMD_ASS_ENABLE, 6111 SETASS_DATA_SIZEOF(caps), prot); 6112 if (!iob) { 6113 qeth_set_tso_off(card, prot); 6114 return -ENOMEM; 6115 } 6116 6117 /* enable TSO capability */ 6118 __ipa_cmd(iob)->data.setassparms.data.caps.enabled = 6119 QETH_IPA_LARGE_SEND_TCP; 6120 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); 6121 if (rc) { 6122 qeth_set_tso_off(card, prot); 6123 return rc; 6124 } 6125 6126 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) || 6127 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) { 6128 qeth_set_tso_off(card, prot); 6129 return -EOPNOTSUPP; 6130 } 6131 6132 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot, 6133 tso_data.mss); 6134 return 0; 6135 } 6136 6137 static int qeth_set_ipa_tso(struct qeth_card *card, bool on, 6138 enum qeth_prot_versions prot) 6139 { 6140 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot); 6141 } 6142 6143 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) 6144 { 6145 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; 6146 int rc_ipv6; 6147 6148 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6149 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6150 QETH_PROT_IPV4); 6151 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6152 /* no/one Offload Assist available, so the rc is trivial */ 6153 return rc_ipv4; 6154 6155 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6156 QETH_PROT_IPV6); 6157 6158 if (on) 6159 /* enable: success if any Assist is active */ 6160 return (rc_ipv6) ? rc_ipv4 : 0; 6161 6162 /* disable: failure if any Assist is still active */ 6163 return (rc_ipv6) ? rc_ipv6 : rc_ipv4; 6164 } 6165 6166 /** 6167 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features 6168 * @dev: a net_device 6169 */ 6170 void qeth_enable_hw_features(struct net_device *dev) 6171 { 6172 struct qeth_card *card = dev->ml_priv; 6173 netdev_features_t features; 6174 6175 features = dev->features; 6176 /* force-off any feature that might need an IPA sequence. 6177 * netdev_update_features() will restart them. 6178 */ 6179 dev->features &= ~dev->hw_features; 6180 /* toggle VLAN filter, so that VIDs are re-programmed: */ 6181 if (IS_LAYER2(card) && IS_VM_NIC(card)) { 6182 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 6183 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 6184 } 6185 netdev_update_features(dev); 6186 if (features != dev->features) 6187 dev_warn(&card->gdev->dev, 6188 "Device recovery failed to restore all offload features\n"); 6189 } 6190 EXPORT_SYMBOL_GPL(qeth_enable_hw_features); 6191 6192 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6193 { 6194 struct qeth_card *card = dev->ml_priv; 6195 netdev_features_t changed = dev->features ^ features; 6196 int rc = 0; 6197 6198 QETH_CARD_TEXT(card, 2, "setfeat"); 6199 QETH_CARD_HEX(card, 2, &features, sizeof(features)); 6200 6201 if ((changed & NETIF_F_IP_CSUM)) { 6202 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, 6203 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); 6204 if (rc) 6205 changed ^= NETIF_F_IP_CSUM; 6206 } 6207 if (changed & NETIF_F_IPV6_CSUM) { 6208 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, 6209 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); 6210 if (rc) 6211 changed ^= NETIF_F_IPV6_CSUM; 6212 } 6213 if (changed & NETIF_F_RXCSUM) { 6214 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); 6215 if (rc) 6216 changed ^= NETIF_F_RXCSUM; 6217 } 6218 if (changed & NETIF_F_TSO) { 6219 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO, 6220 QETH_PROT_IPV4); 6221 if (rc) 6222 changed ^= NETIF_F_TSO; 6223 } 6224 if (changed & NETIF_F_TSO6) { 6225 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6, 6226 QETH_PROT_IPV6); 6227 if (rc) 6228 changed ^= NETIF_F_TSO6; 6229 } 6230 6231 /* everything changed successfully? */ 6232 if ((dev->features ^ features) == changed) 6233 return 0; 6234 /* something went wrong. save changed features and return error */ 6235 dev->features ^= changed; 6236 return -EIO; 6237 } 6238 EXPORT_SYMBOL_GPL(qeth_set_features); 6239 6240 netdev_features_t qeth_fix_features(struct net_device *dev, 6241 netdev_features_t features) 6242 { 6243 struct qeth_card *card = dev->ml_priv; 6244 6245 QETH_CARD_TEXT(card, 2, "fixfeat"); 6246 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6247 features &= ~NETIF_F_IP_CSUM; 6248 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) 6249 features &= ~NETIF_F_IPV6_CSUM; 6250 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && 6251 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6252 features &= ~NETIF_F_RXCSUM; 6253 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6254 features &= ~NETIF_F_TSO; 6255 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO)) 6256 features &= ~NETIF_F_TSO6; 6257 6258 QETH_CARD_HEX(card, 2, &features, sizeof(features)); 6259 return features; 6260 } 6261 EXPORT_SYMBOL_GPL(qeth_fix_features); 6262 6263 netdev_features_t qeth_features_check(struct sk_buff *skb, 6264 struct net_device *dev, 6265 netdev_features_t features) 6266 { 6267 /* GSO segmentation builds skbs with 6268 * a (small) linear part for the headers, and 6269 * page frags for the data. 6270 * Compared to a linear skb, the header-only part consumes an 6271 * additional buffer element. This reduces buffer utilization, and 6272 * hurts throughput. So compress small segments into one element. 6273 */ 6274 if (netif_needs_gso(skb, features)) { 6275 /* match skb_segment(): */ 6276 unsigned int doffset = skb->data - skb_mac_header(skb); 6277 unsigned int hsize = skb_shinfo(skb)->gso_size; 6278 unsigned int hroom = skb_headroom(skb); 6279 6280 /* linearize only if resulting skb allocations are order-0: */ 6281 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6282 features &= ~NETIF_F_SG; 6283 } 6284 6285 return vlan_features_check(skb, features); 6286 } 6287 EXPORT_SYMBOL_GPL(qeth_features_check); 6288 6289 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 6290 { 6291 struct qeth_card *card = dev->ml_priv; 6292 struct qeth_qdio_out_q *queue; 6293 unsigned int i; 6294 6295 QETH_CARD_TEXT(card, 5, "getstat"); 6296 6297 stats->rx_packets = card->stats.rx_packets; 6298 stats->rx_bytes = card->stats.rx_bytes; 6299 stats->rx_errors = card->stats.rx_length_errors + 6300 card->stats.rx_frame_errors + 6301 card->stats.rx_fifo_errors; 6302 stats->rx_dropped = card->stats.rx_dropped_nomem + 6303 card->stats.rx_dropped_notsupp + 6304 card->stats.rx_dropped_runt; 6305 stats->multicast = card->stats.rx_multicast; 6306 stats->rx_length_errors = card->stats.rx_length_errors; 6307 stats->rx_frame_errors = card->stats.rx_frame_errors; 6308 stats->rx_fifo_errors = card->stats.rx_fifo_errors; 6309 6310 for (i = 0; i < card->qdio.no_out_queues; i++) { 6311 queue = card->qdio.out_qs[i]; 6312 6313 stats->tx_packets += queue->stats.tx_packets; 6314 stats->tx_bytes += queue->stats.tx_bytes; 6315 stats->tx_errors += queue->stats.tx_errors; 6316 stats->tx_dropped += queue->stats.tx_dropped; 6317 } 6318 } 6319 EXPORT_SYMBOL_GPL(qeth_get_stats64); 6320 6321 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 6322 u8 cast_type, struct net_device *sb_dev) 6323 { 6324 if (cast_type != RTN_UNICAST) 6325 return QETH_IQD_MCAST_TXQ; 6326 return QETH_IQD_MIN_UCAST_TXQ; 6327 } 6328 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue); 6329 6330 int qeth_open(struct net_device *dev) 6331 { 6332 struct qeth_card *card = dev->ml_priv; 6333 6334 QETH_CARD_TEXT(card, 4, "qethopen"); 6335 6336 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0) 6337 return -EIO; 6338 6339 card->data.state = CH_STATE_UP; 6340 netif_tx_start_all_queues(dev); 6341 6342 napi_enable(&card->napi); 6343 local_bh_disable(); 6344 napi_schedule(&card->napi); 6345 if (IS_IQD(card)) { 6346 struct qeth_qdio_out_q *queue; 6347 unsigned int i; 6348 6349 qeth_for_each_output_queue(card, queue, i) { 6350 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll, 6351 QETH_NAPI_WEIGHT); 6352 napi_enable(&queue->napi); 6353 napi_schedule(&queue->napi); 6354 } 6355 } 6356 /* kick-start the NAPI softirq: */ 6357 local_bh_enable(); 6358 return 0; 6359 } 6360 EXPORT_SYMBOL_GPL(qeth_open); 6361 6362 int qeth_stop(struct net_device *dev) 6363 { 6364 struct qeth_card *card = dev->ml_priv; 6365 6366 QETH_CARD_TEXT(card, 4, "qethstop"); 6367 if (IS_IQD(card)) { 6368 struct qeth_qdio_out_q *queue; 6369 unsigned int i; 6370 6371 /* Quiesce the NAPI instances: */ 6372 qeth_for_each_output_queue(card, queue, i) { 6373 napi_disable(&queue->napi); 6374 del_timer_sync(&queue->timer); 6375 } 6376 6377 /* Stop .ndo_start_xmit, might still access queue->napi. */ 6378 netif_tx_disable(dev); 6379 6380 /* Queues may get re-allocated, so remove the NAPIs here. */ 6381 qeth_for_each_output_queue(card, queue, i) 6382 netif_napi_del(&queue->napi); 6383 } else { 6384 netif_tx_disable(dev); 6385 } 6386 6387 napi_disable(&card->napi); 6388 return 0; 6389 } 6390 EXPORT_SYMBOL_GPL(qeth_stop); 6391 6392 static int __init qeth_core_init(void) 6393 { 6394 int rc; 6395 6396 pr_info("loading core functions\n"); 6397 6398 rc = qeth_register_dbf_views(); 6399 if (rc) 6400 goto dbf_err; 6401 qeth_core_root_dev = root_device_register("qeth"); 6402 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6403 if (rc) 6404 goto register_err; 6405 qeth_core_header_cache = 6406 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE, 6407 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE), 6408 0, NULL); 6409 if (!qeth_core_header_cache) { 6410 rc = -ENOMEM; 6411 goto slab_err; 6412 } 6413 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6414 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6415 if (!qeth_qdio_outbuf_cache) { 6416 rc = -ENOMEM; 6417 goto cqslab_err; 6418 } 6419 rc = ccw_driver_register(&qeth_ccw_driver); 6420 if (rc) 6421 goto ccw_err; 6422 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6423 if (rc) 6424 goto ccwgroup_err; 6425 6426 return 0; 6427 6428 ccwgroup_err: 6429 ccw_driver_unregister(&qeth_ccw_driver); 6430 ccw_err: 6431 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6432 cqslab_err: 6433 kmem_cache_destroy(qeth_core_header_cache); 6434 slab_err: 6435 root_device_unregister(qeth_core_root_dev); 6436 register_err: 6437 qeth_unregister_dbf_views(); 6438 dbf_err: 6439 pr_err("Initializing the qeth device driver failed\n"); 6440 return rc; 6441 } 6442 6443 static void __exit qeth_core_exit(void) 6444 { 6445 qeth_clear_dbf_list(); 6446 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6447 ccw_driver_unregister(&qeth_ccw_driver); 6448 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6449 kmem_cache_destroy(qeth_core_header_cache); 6450 root_device_unregister(qeth_core_root_dev); 6451 qeth_unregister_dbf_views(); 6452 pr_info("core functions removed\n"); 6453 } 6454 6455 module_init(qeth_core_init); 6456 module_exit(qeth_core_exit); 6457 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6458 MODULE_DESCRIPTION("qeth core functions"); 6459 MODULE_LICENSE("GPL"); 6460