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 qeth_unlock_channel(card, channel); 524 qeth_put_cmd(iob); 525 card->read_or_write_problem = 1; 526 qeth_schedule_recovery(card); 527 } 528 return rc; 529 } 530 531 static int qeth_issue_next_read(struct qeth_card *card) 532 { 533 int ret; 534 535 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 536 ret = __qeth_issue_next_read(card); 537 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 538 539 return ret; 540 } 541 542 static void qeth_enqueue_cmd(struct qeth_card *card, 543 struct qeth_cmd_buffer *iob) 544 { 545 spin_lock_irq(&card->lock); 546 list_add_tail(&iob->list, &card->cmd_waiter_list); 547 spin_unlock_irq(&card->lock); 548 } 549 550 static void qeth_dequeue_cmd(struct qeth_card *card, 551 struct qeth_cmd_buffer *iob) 552 { 553 spin_lock_irq(&card->lock); 554 list_del(&iob->list); 555 spin_unlock_irq(&card->lock); 556 } 557 558 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason) 559 { 560 iob->rc = reason; 561 complete(&iob->done); 562 } 563 EXPORT_SYMBOL_GPL(qeth_notify_cmd); 564 565 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 566 struct qeth_card *card) 567 { 568 const char *ipa_name; 569 int com = cmd->hdr.command; 570 ipa_name = qeth_get_ipa_cmd_name(com); 571 572 if (rc) 573 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n", 574 ipa_name, com, CARD_DEVID(card), rc, 575 qeth_get_ipa_msg(rc)); 576 else 577 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n", 578 ipa_name, com, CARD_DEVID(card)); 579 } 580 581 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 582 struct qeth_ipa_cmd *cmd) 583 { 584 QETH_CARD_TEXT(card, 5, "chkipad"); 585 586 if (IS_IPA_REPLY(cmd)) { 587 if (cmd->hdr.command != IPA_CMD_SETCCID && 588 cmd->hdr.command != IPA_CMD_DELCCID && 589 cmd->hdr.command != IPA_CMD_MODCCID && 590 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 591 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 592 return cmd; 593 } 594 595 /* handle unsolicited event: */ 596 switch (cmd->hdr.command) { 597 case IPA_CMD_STOPLAN: 598 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) { 599 dev_err(&card->gdev->dev, 600 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n", 601 QETH_CARD_IFNAME(card)); 602 schedule_work(&card->close_dev_work); 603 } else { 604 dev_warn(&card->gdev->dev, 605 "The link for interface %s on CHPID 0x%X failed\n", 606 QETH_CARD_IFNAME(card), card->info.chpid); 607 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 608 netif_carrier_off(card->dev); 609 } 610 return NULL; 611 case IPA_CMD_STARTLAN: 612 dev_info(&card->gdev->dev, 613 "The link for %s on CHPID 0x%X has been restored\n", 614 QETH_CARD_IFNAME(card), card->info.chpid); 615 if (card->info.hwtrap) 616 card->info.hwtrap = 2; 617 qeth_schedule_recovery(card); 618 return NULL; 619 case IPA_CMD_SETBRIDGEPORT_IQD: 620 case IPA_CMD_SETBRIDGEPORT_OSA: 621 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 622 if (card->discipline->control_event_handler(card, cmd)) 623 return cmd; 624 return NULL; 625 case IPA_CMD_MODCCID: 626 return cmd; 627 case IPA_CMD_REGISTER_LOCAL_ADDR: 628 QETH_CARD_TEXT(card, 3, "irla"); 629 return NULL; 630 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 631 QETH_CARD_TEXT(card, 3, "urla"); 632 return NULL; 633 default: 634 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n"); 635 return cmd; 636 } 637 } 638 639 void qeth_clear_ipacmd_list(struct qeth_card *card) 640 { 641 struct qeth_cmd_buffer *iob; 642 unsigned long flags; 643 644 QETH_CARD_TEXT(card, 4, "clipalst"); 645 646 spin_lock_irqsave(&card->lock, flags); 647 list_for_each_entry(iob, &card->cmd_waiter_list, list) 648 qeth_notify_cmd(iob, -EIO); 649 spin_unlock_irqrestore(&card->lock, flags); 650 } 651 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 652 653 static int qeth_check_idx_response(struct qeth_card *card, 654 unsigned char *buffer) 655 { 656 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 657 if ((buffer[2] & 0xc0) == 0xc0) { 658 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n", 659 buffer[4]); 660 QETH_CARD_TEXT(card, 2, "ckidxres"); 661 QETH_CARD_TEXT(card, 2, " idxterm"); 662 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 663 if (buffer[4] == 0xf6) { 664 dev_err(&card->gdev->dev, 665 "The qeth device is not configured " 666 "for the OSI layer required by z/VM\n"); 667 return -EPERM; 668 } 669 return -EIO; 670 } 671 return 0; 672 } 673 674 void qeth_put_cmd(struct qeth_cmd_buffer *iob) 675 { 676 if (refcount_dec_and_test(&iob->ref_count)) { 677 kfree(iob->data); 678 kfree(iob); 679 } 680 } 681 EXPORT_SYMBOL_GPL(qeth_put_cmd); 682 683 static void qeth_release_buffer_cb(struct qeth_card *card, 684 struct qeth_cmd_buffer *iob, 685 unsigned int data_length) 686 { 687 qeth_put_cmd(iob); 688 } 689 690 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc) 691 { 692 qeth_notify_cmd(iob, rc); 693 qeth_put_cmd(iob); 694 } 695 696 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 697 unsigned int length, unsigned int ccws, 698 long timeout) 699 { 700 struct qeth_cmd_buffer *iob; 701 702 if (length > QETH_BUFSIZE) 703 return NULL; 704 705 iob = kzalloc(sizeof(*iob), GFP_KERNEL); 706 if (!iob) 707 return NULL; 708 709 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1), 710 GFP_KERNEL | GFP_DMA); 711 if (!iob->data) { 712 kfree(iob); 713 return NULL; 714 } 715 716 init_completion(&iob->done); 717 spin_lock_init(&iob->lock); 718 INIT_LIST_HEAD(&iob->list); 719 refcount_set(&iob->ref_count, 1); 720 iob->channel = channel; 721 iob->timeout = timeout; 722 iob->length = length; 723 return iob; 724 } 725 EXPORT_SYMBOL_GPL(qeth_alloc_cmd); 726 727 static void qeth_issue_next_read_cb(struct qeth_card *card, 728 struct qeth_cmd_buffer *iob, 729 unsigned int data_length) 730 { 731 struct qeth_cmd_buffer *request = NULL; 732 struct qeth_ipa_cmd *cmd = NULL; 733 struct qeth_reply *reply = NULL; 734 struct qeth_cmd_buffer *tmp; 735 unsigned long flags; 736 int rc = 0; 737 738 QETH_CARD_TEXT(card, 4, "sndctlcb"); 739 rc = qeth_check_idx_response(card, iob->data); 740 switch (rc) { 741 case 0: 742 break; 743 case -EIO: 744 qeth_clear_ipacmd_list(card); 745 qeth_schedule_recovery(card); 746 /* fall through */ 747 default: 748 goto out; 749 } 750 751 if (IS_IPA(iob->data)) { 752 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 753 cmd = qeth_check_ipa_data(card, cmd); 754 if (!cmd) 755 goto out; 756 if (IS_OSN(card) && card->osn_info.assist_cb && 757 cmd->hdr.command != IPA_CMD_STARTLAN) { 758 card->osn_info.assist_cb(card->dev, cmd); 759 goto out; 760 } 761 } else { 762 /* non-IPA commands should only flow during initialization */ 763 if (card->state != CARD_STATE_DOWN) 764 goto out; 765 } 766 767 /* match against pending cmd requests */ 768 spin_lock_irqsave(&card->lock, flags); 769 list_for_each_entry(tmp, &card->cmd_waiter_list, list) { 770 if (!IS_IPA(tmp->data) || 771 __ipa_cmd(tmp)->hdr.seqno == cmd->hdr.seqno) { 772 request = tmp; 773 /* take the object outside the lock */ 774 qeth_get_cmd(request); 775 break; 776 } 777 } 778 spin_unlock_irqrestore(&card->lock, flags); 779 780 if (!request) 781 goto out; 782 783 reply = &request->reply; 784 if (!reply->callback) { 785 rc = 0; 786 goto no_callback; 787 } 788 789 spin_lock_irqsave(&request->lock, flags); 790 if (request->rc) 791 /* Bail out when the requestor has already left: */ 792 rc = request->rc; 793 else 794 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd : 795 (unsigned long)iob); 796 spin_unlock_irqrestore(&request->lock, flags); 797 798 no_callback: 799 if (rc <= 0) 800 qeth_notify_cmd(request, rc); 801 qeth_put_cmd(request); 802 out: 803 memcpy(&card->seqno.pdu_hdr_ack, 804 QETH_PDU_HEADER_SEQ_NO(iob->data), 805 QETH_SEQ_NO_LENGTH); 806 qeth_put_cmd(iob); 807 __qeth_issue_next_read(card); 808 } 809 810 static int qeth_set_thread_start_bit(struct qeth_card *card, 811 unsigned long thread) 812 { 813 unsigned long flags; 814 815 spin_lock_irqsave(&card->thread_mask_lock, flags); 816 if (!(card->thread_allowed_mask & thread) || 817 (card->thread_start_mask & thread)) { 818 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 819 return -EPERM; 820 } 821 card->thread_start_mask |= thread; 822 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 823 return 0; 824 } 825 826 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 827 { 828 unsigned long flags; 829 830 spin_lock_irqsave(&card->thread_mask_lock, flags); 831 card->thread_start_mask &= ~thread; 832 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 833 wake_up(&card->wait_q); 834 } 835 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 836 837 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 838 { 839 unsigned long flags; 840 841 spin_lock_irqsave(&card->thread_mask_lock, flags); 842 card->thread_running_mask &= ~thread; 843 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 844 wake_up_all(&card->wait_q); 845 } 846 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 847 848 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 849 { 850 unsigned long flags; 851 int rc = 0; 852 853 spin_lock_irqsave(&card->thread_mask_lock, flags); 854 if (card->thread_start_mask & thread) { 855 if ((card->thread_allowed_mask & thread) && 856 !(card->thread_running_mask & thread)) { 857 rc = 1; 858 card->thread_start_mask &= ~thread; 859 card->thread_running_mask |= thread; 860 } else 861 rc = -EPERM; 862 } 863 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 864 return rc; 865 } 866 867 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 868 { 869 int rc = 0; 870 871 wait_event(card->wait_q, 872 (rc = __qeth_do_run_thread(card, thread)) >= 0); 873 return rc; 874 } 875 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 876 877 void qeth_schedule_recovery(struct qeth_card *card) 878 { 879 QETH_CARD_TEXT(card, 2, "startrec"); 880 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 881 schedule_work(&card->kernel_thread_starter); 882 } 883 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 884 885 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev, 886 struct irb *irb) 887 { 888 int dstat, cstat; 889 char *sense; 890 891 sense = (char *) irb->ecw; 892 cstat = irb->scsw.cmd.cstat; 893 dstat = irb->scsw.cmd.dstat; 894 895 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 896 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 897 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 898 QETH_CARD_TEXT(card, 2, "CGENCHK"); 899 dev_warn(&cdev->dev, "The qeth device driver " 900 "failed to recover an error on the device\n"); 901 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n", 902 CCW_DEVID(cdev), dstat, cstat); 903 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 904 16, 1, irb, 64, 1); 905 return -EIO; 906 } 907 908 if (dstat & DEV_STAT_UNIT_CHECK) { 909 if (sense[SENSE_RESETTING_EVENT_BYTE] & 910 SENSE_RESETTING_EVENT_FLAG) { 911 QETH_CARD_TEXT(card, 2, "REVIND"); 912 return -EIO; 913 } 914 if (sense[SENSE_COMMAND_REJECT_BYTE] & 915 SENSE_COMMAND_REJECT_FLAG) { 916 QETH_CARD_TEXT(card, 2, "CMDREJi"); 917 return -EIO; 918 } 919 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 920 QETH_CARD_TEXT(card, 2, "AFFE"); 921 return -EIO; 922 } 923 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 924 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 925 return 0; 926 } 927 QETH_CARD_TEXT(card, 2, "DGENCHK"); 928 return -EIO; 929 } 930 return 0; 931 } 932 933 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev, 934 struct irb *irb) 935 { 936 if (!IS_ERR(irb)) 937 return 0; 938 939 switch (PTR_ERR(irb)) { 940 case -EIO: 941 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n", 942 CCW_DEVID(cdev)); 943 QETH_CARD_TEXT(card, 2, "ckirberr"); 944 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 945 return -EIO; 946 case -ETIMEDOUT: 947 dev_warn(&cdev->dev, "A hardware operation timed out" 948 " on the device\n"); 949 QETH_CARD_TEXT(card, 2, "ckirberr"); 950 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 951 return -ETIMEDOUT; 952 default: 953 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n", 954 PTR_ERR(irb), CCW_DEVID(cdev)); 955 QETH_CARD_TEXT(card, 2, "ckirberr"); 956 QETH_CARD_TEXT(card, 2, " rc???"); 957 return PTR_ERR(irb); 958 } 959 } 960 961 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 962 struct irb *irb) 963 { 964 int rc; 965 int cstat, dstat; 966 struct qeth_cmd_buffer *iob = NULL; 967 struct ccwgroup_device *gdev; 968 struct qeth_channel *channel; 969 struct qeth_card *card; 970 971 /* while we hold the ccwdev lock, this stays valid: */ 972 gdev = dev_get_drvdata(&cdev->dev); 973 card = dev_get_drvdata(&gdev->dev); 974 975 QETH_CARD_TEXT(card, 5, "irq"); 976 977 if (card->read.ccwdev == cdev) { 978 channel = &card->read; 979 QETH_CARD_TEXT(card, 5, "read"); 980 } else if (card->write.ccwdev == cdev) { 981 channel = &card->write; 982 QETH_CARD_TEXT(card, 5, "write"); 983 } else { 984 channel = &card->data; 985 QETH_CARD_TEXT(card, 5, "data"); 986 } 987 988 if (intparm == 0) { 989 QETH_CARD_TEXT(card, 5, "irqunsol"); 990 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) { 991 QETH_CARD_TEXT(card, 5, "irqunexp"); 992 993 dev_err(&cdev->dev, 994 "Received IRQ with intparm %lx, expected %px\n", 995 intparm, channel->active_cmd); 996 if (channel->active_cmd) 997 qeth_cancel_cmd(channel->active_cmd, -EIO); 998 } else { 999 iob = (struct qeth_cmd_buffer *) (addr_t)intparm; 1000 } 1001 1002 channel->active_cmd = NULL; 1003 qeth_unlock_channel(card, channel); 1004 1005 rc = qeth_check_irb_error(card, cdev, irb); 1006 if (rc) { 1007 /* IO was terminated, free its resources. */ 1008 if (iob) 1009 qeth_cancel_cmd(iob, rc); 1010 return; 1011 } 1012 1013 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) { 1014 channel->state = CH_STATE_STOPPED; 1015 wake_up(&card->wait_q); 1016 } 1017 1018 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) { 1019 channel->state = CH_STATE_HALTED; 1020 wake_up(&card->wait_q); 1021 } 1022 1023 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC | 1024 SCSW_FCTL_HALT_FUNC))) { 1025 qeth_cancel_cmd(iob, -ECANCELED); 1026 iob = NULL; 1027 } 1028 1029 cstat = irb->scsw.cmd.cstat; 1030 dstat = irb->scsw.cmd.dstat; 1031 1032 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1033 (dstat & DEV_STAT_UNIT_CHECK) || 1034 (cstat)) { 1035 if (irb->esw.esw0.erw.cons) { 1036 dev_warn(&channel->ccwdev->dev, 1037 "The qeth device driver failed to recover " 1038 "an error on the device\n"); 1039 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n", 1040 CCW_DEVID(channel->ccwdev), cstat, 1041 dstat); 1042 print_hex_dump(KERN_WARNING, "qeth: irb ", 1043 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1044 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1045 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1046 } 1047 1048 rc = qeth_get_problem(card, cdev, irb); 1049 if (rc) { 1050 card->read_or_write_problem = 1; 1051 if (iob) 1052 qeth_cancel_cmd(iob, rc); 1053 qeth_clear_ipacmd_list(card); 1054 qeth_schedule_recovery(card); 1055 return; 1056 } 1057 } 1058 1059 if (iob) { 1060 /* sanity check: */ 1061 if (irb->scsw.cmd.count > iob->length) { 1062 qeth_cancel_cmd(iob, -EIO); 1063 return; 1064 } 1065 if (iob->callback) 1066 iob->callback(card, iob, 1067 iob->length - irb->scsw.cmd.count); 1068 } 1069 } 1070 1071 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1072 struct qeth_qdio_out_buffer *buf, 1073 enum iucv_tx_notify notification) 1074 { 1075 struct sk_buff *skb; 1076 1077 skb_queue_walk(&buf->skb_list, skb) { 1078 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1079 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1080 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk) 1081 iucv_sk(skb->sk)->sk_txnotify(skb, notification); 1082 } 1083 } 1084 1085 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error, 1086 int budget) 1087 { 1088 struct qeth_qdio_out_q *queue = buf->q; 1089 struct sk_buff *skb; 1090 1091 /* release may never happen from within CQ tasklet scope */ 1092 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1093 1094 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1095 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR); 1096 1097 /* Empty buffer? */ 1098 if (buf->next_element_to_fill == 0) 1099 return; 1100 1101 QETH_TXQ_STAT_INC(queue, bufs); 1102 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill); 1103 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) { 1104 unsigned int bytes = qdisc_pkt_len(skb); 1105 bool is_tso = skb_is_gso(skb); 1106 unsigned int packets; 1107 1108 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1; 1109 if (error) { 1110 QETH_TXQ_STAT_ADD(queue, tx_errors, packets); 1111 } else { 1112 QETH_TXQ_STAT_ADD(queue, tx_packets, packets); 1113 QETH_TXQ_STAT_ADD(queue, tx_bytes, bytes); 1114 if (skb->ip_summed == CHECKSUM_PARTIAL) 1115 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets); 1116 if (skb_is_nonlinear(skb)) 1117 QETH_TXQ_STAT_INC(queue, skbs_sg); 1118 if (is_tso) { 1119 QETH_TXQ_STAT_INC(queue, skbs_tso); 1120 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes); 1121 } 1122 } 1123 1124 napi_consume_skb(skb, budget); 1125 } 1126 } 1127 1128 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1129 struct qeth_qdio_out_buffer *buf, 1130 bool error, int budget) 1131 { 1132 int i; 1133 1134 /* is PCI flag set on buffer? */ 1135 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1136 atomic_dec(&queue->set_pci_flags_count); 1137 1138 qeth_tx_complete_buf(buf, error, budget); 1139 1140 for (i = 0; i < queue->max_elements; ++i) { 1141 if (buf->buffer->element[i].addr && buf->is_header[i]) 1142 kmem_cache_free(qeth_core_header_cache, 1143 buf->buffer->element[i].addr); 1144 buf->is_header[i] = 0; 1145 } 1146 1147 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements); 1148 buf->next_element_to_fill = 0; 1149 buf->bytes = 0; 1150 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); 1151 } 1152 1153 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free) 1154 { 1155 int j; 1156 1157 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1158 if (!q->bufs[j]) 1159 continue; 1160 qeth_cleanup_handled_pending(q, j, 1); 1161 qeth_clear_output_buffer(q, q->bufs[j], true, 0); 1162 if (free) { 1163 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1164 q->bufs[j] = NULL; 1165 } 1166 } 1167 } 1168 1169 void qeth_drain_output_queues(struct qeth_card *card) 1170 { 1171 int i; 1172 1173 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1174 /* clear outbound buffers to free skbs */ 1175 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1176 if (card->qdio.out_qs[i]) 1177 qeth_drain_output_queue(card->qdio.out_qs[i], false); 1178 } 1179 } 1180 EXPORT_SYMBOL_GPL(qeth_drain_output_queues); 1181 1182 static void qeth_free_buffer_pool(struct qeth_card *card) 1183 { 1184 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1185 int i = 0; 1186 list_for_each_entry_safe(pool_entry, tmp, 1187 &card->qdio.init_pool.entry_list, init_list){ 1188 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1189 free_page((unsigned long)pool_entry->elements[i]); 1190 list_del(&pool_entry->init_list); 1191 kfree(pool_entry); 1192 } 1193 } 1194 1195 static int qeth_osa_set_output_queues(struct qeth_card *card, bool single) 1196 { 1197 unsigned int count = single ? 1 : card->dev->num_tx_queues; 1198 int rc; 1199 1200 rtnl_lock(); 1201 rc = netif_set_real_num_tx_queues(card->dev, count); 1202 rtnl_unlock(); 1203 1204 if (rc) 1205 return rc; 1206 1207 if (card->qdio.no_out_queues == count) 1208 return 0; 1209 1210 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) 1211 qeth_free_qdio_queues(card); 1212 1213 if (count == 1) 1214 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1215 1216 card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE; 1217 card->qdio.no_out_queues = count; 1218 return 0; 1219 } 1220 1221 static int qeth_update_from_chp_desc(struct qeth_card *card) 1222 { 1223 struct ccw_device *ccwdev; 1224 struct channel_path_desc_fmt0 *chp_dsc; 1225 int rc = 0; 1226 1227 QETH_CARD_TEXT(card, 2, "chp_desc"); 1228 1229 ccwdev = card->data.ccwdev; 1230 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1231 if (!chp_dsc) 1232 return -ENOMEM; 1233 1234 card->info.func_level = 0x4100 + chp_dsc->desc; 1235 1236 if (IS_OSD(card) || IS_OSX(card)) 1237 /* CHPP field bit 6 == 1 -> single queue */ 1238 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02); 1239 1240 kfree(chp_dsc); 1241 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues); 1242 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level); 1243 return rc; 1244 } 1245 1246 static void qeth_init_qdio_info(struct qeth_card *card) 1247 { 1248 QETH_CARD_TEXT(card, 4, "intqdinf"); 1249 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1250 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1251 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1252 1253 /* inbound */ 1254 card->qdio.no_in_queues = 1; 1255 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1256 if (IS_IQD(card)) 1257 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1258 else 1259 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1260 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1261 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1262 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1263 } 1264 1265 static void qeth_set_initial_options(struct qeth_card *card) 1266 { 1267 card->options.route4.type = NO_ROUTER; 1268 card->options.route6.type = NO_ROUTER; 1269 card->options.rx_sg_cb = QETH_RX_SG_CB; 1270 card->options.isolation = ISOLATION_MODE_NONE; 1271 card->options.cq = QETH_CQ_DISABLED; 1272 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 1273 } 1274 1275 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1276 { 1277 unsigned long flags; 1278 int rc = 0; 1279 1280 spin_lock_irqsave(&card->thread_mask_lock, flags); 1281 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1282 (u8) card->thread_start_mask, 1283 (u8) card->thread_allowed_mask, 1284 (u8) card->thread_running_mask); 1285 rc = (card->thread_start_mask & thread); 1286 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1287 return rc; 1288 } 1289 1290 static void qeth_start_kernel_thread(struct work_struct *work) 1291 { 1292 struct task_struct *ts; 1293 struct qeth_card *card = container_of(work, struct qeth_card, 1294 kernel_thread_starter); 1295 QETH_CARD_TEXT(card , 2, "strthrd"); 1296 1297 if (card->read.state != CH_STATE_UP && 1298 card->write.state != CH_STATE_UP) 1299 return; 1300 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1301 ts = kthread_run(card->discipline->recover, (void *)card, 1302 "qeth_recover"); 1303 if (IS_ERR(ts)) { 1304 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1305 qeth_clear_thread_running_bit(card, 1306 QETH_RECOVER_THREAD); 1307 } 1308 } 1309 } 1310 1311 static void qeth_buffer_reclaim_work(struct work_struct *); 1312 static void qeth_setup_card(struct qeth_card *card) 1313 { 1314 QETH_CARD_TEXT(card, 2, "setupcrd"); 1315 1316 card->info.type = CARD_RDEV(card)->id.driver_info; 1317 card->state = CARD_STATE_DOWN; 1318 spin_lock_init(&card->lock); 1319 spin_lock_init(&card->thread_mask_lock); 1320 mutex_init(&card->conf_mutex); 1321 mutex_init(&card->discipline_mutex); 1322 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1323 INIT_LIST_HEAD(&card->cmd_waiter_list); 1324 init_waitqueue_head(&card->wait_q); 1325 qeth_set_initial_options(card); 1326 /* IP address takeover */ 1327 INIT_LIST_HEAD(&card->ipato.entries); 1328 qeth_init_qdio_info(card); 1329 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1330 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1331 } 1332 1333 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1334 { 1335 struct qeth_card *card = container_of(slr, struct qeth_card, 1336 qeth_service_level); 1337 if (card->info.mcl_level[0]) 1338 seq_printf(m, "qeth: %s firmware level %s\n", 1339 CARD_BUS_ID(card), card->info.mcl_level); 1340 } 1341 1342 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev) 1343 { 1344 struct qeth_card *card; 1345 1346 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1347 card = kzalloc(sizeof(*card), GFP_KERNEL); 1348 if (!card) 1349 goto out; 1350 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1351 1352 card->gdev = gdev; 1353 dev_set_drvdata(&gdev->dev, card); 1354 CARD_RDEV(card) = gdev->cdev[0]; 1355 CARD_WDEV(card) = gdev->cdev[1]; 1356 CARD_DDEV(card) = gdev->cdev[2]; 1357 1358 card->event_wq = alloc_ordered_workqueue("%s_event", 0, 1359 dev_name(&gdev->dev)); 1360 if (!card->event_wq) 1361 goto out_wq; 1362 1363 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0); 1364 if (!card->read_cmd) 1365 goto out_read_cmd; 1366 1367 card->qeth_service_level.seq_print = qeth_core_sl_print; 1368 register_service_level(&card->qeth_service_level); 1369 return card; 1370 1371 out_read_cmd: 1372 destroy_workqueue(card->event_wq); 1373 out_wq: 1374 dev_set_drvdata(&gdev->dev, NULL); 1375 kfree(card); 1376 out: 1377 return NULL; 1378 } 1379 1380 static int qeth_clear_channel(struct qeth_card *card, 1381 struct qeth_channel *channel) 1382 { 1383 int rc; 1384 1385 QETH_CARD_TEXT(card, 3, "clearch"); 1386 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1387 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd); 1388 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1389 1390 if (rc) 1391 return rc; 1392 rc = wait_event_interruptible_timeout(card->wait_q, 1393 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1394 if (rc == -ERESTARTSYS) 1395 return rc; 1396 if (channel->state != CH_STATE_STOPPED) 1397 return -ETIME; 1398 channel->state = CH_STATE_DOWN; 1399 return 0; 1400 } 1401 1402 static int qeth_halt_channel(struct qeth_card *card, 1403 struct qeth_channel *channel) 1404 { 1405 int rc; 1406 1407 QETH_CARD_TEXT(card, 3, "haltch"); 1408 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1409 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd); 1410 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1411 1412 if (rc) 1413 return rc; 1414 rc = wait_event_interruptible_timeout(card->wait_q, 1415 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1416 if (rc == -ERESTARTSYS) 1417 return rc; 1418 if (channel->state != CH_STATE_HALTED) 1419 return -ETIME; 1420 return 0; 1421 } 1422 1423 int qeth_stop_channel(struct qeth_channel *channel) 1424 { 1425 struct ccw_device *cdev = channel->ccwdev; 1426 int rc; 1427 1428 rc = ccw_device_set_offline(cdev); 1429 1430 spin_lock_irq(get_ccwdev_lock(cdev)); 1431 if (channel->active_cmd) { 1432 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n", 1433 channel->active_cmd); 1434 channel->active_cmd = NULL; 1435 } 1436 cdev->handler = NULL; 1437 spin_unlock_irq(get_ccwdev_lock(cdev)); 1438 1439 return rc; 1440 } 1441 EXPORT_SYMBOL_GPL(qeth_stop_channel); 1442 1443 static int qeth_start_channel(struct qeth_channel *channel) 1444 { 1445 struct ccw_device *cdev = channel->ccwdev; 1446 int rc; 1447 1448 channel->state = CH_STATE_DOWN; 1449 atomic_set(&channel->irq_pending, 0); 1450 1451 spin_lock_irq(get_ccwdev_lock(cdev)); 1452 cdev->handler = qeth_irq; 1453 spin_unlock_irq(get_ccwdev_lock(cdev)); 1454 1455 rc = ccw_device_set_online(cdev); 1456 if (rc) 1457 goto err; 1458 1459 return 0; 1460 1461 err: 1462 spin_lock_irq(get_ccwdev_lock(cdev)); 1463 cdev->handler = NULL; 1464 spin_unlock_irq(get_ccwdev_lock(cdev)); 1465 return rc; 1466 } 1467 1468 static int qeth_halt_channels(struct qeth_card *card) 1469 { 1470 int rc1 = 0, rc2 = 0, rc3 = 0; 1471 1472 QETH_CARD_TEXT(card, 3, "haltchs"); 1473 rc1 = qeth_halt_channel(card, &card->read); 1474 rc2 = qeth_halt_channel(card, &card->write); 1475 rc3 = qeth_halt_channel(card, &card->data); 1476 if (rc1) 1477 return rc1; 1478 if (rc2) 1479 return rc2; 1480 return rc3; 1481 } 1482 1483 static int qeth_clear_channels(struct qeth_card *card) 1484 { 1485 int rc1 = 0, rc2 = 0, rc3 = 0; 1486 1487 QETH_CARD_TEXT(card, 3, "clearchs"); 1488 rc1 = qeth_clear_channel(card, &card->read); 1489 rc2 = qeth_clear_channel(card, &card->write); 1490 rc3 = qeth_clear_channel(card, &card->data); 1491 if (rc1) 1492 return rc1; 1493 if (rc2) 1494 return rc2; 1495 return rc3; 1496 } 1497 1498 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1499 { 1500 int rc = 0; 1501 1502 QETH_CARD_TEXT(card, 3, "clhacrd"); 1503 1504 if (halt) 1505 rc = qeth_halt_channels(card); 1506 if (rc) 1507 return rc; 1508 return qeth_clear_channels(card); 1509 } 1510 1511 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1512 { 1513 int rc = 0; 1514 1515 QETH_CARD_TEXT(card, 3, "qdioclr"); 1516 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1517 QETH_QDIO_CLEANING)) { 1518 case QETH_QDIO_ESTABLISHED: 1519 if (IS_IQD(card)) 1520 rc = qdio_shutdown(CARD_DDEV(card), 1521 QDIO_FLAG_CLEANUP_USING_HALT); 1522 else 1523 rc = qdio_shutdown(CARD_DDEV(card), 1524 QDIO_FLAG_CLEANUP_USING_CLEAR); 1525 if (rc) 1526 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1527 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1528 break; 1529 case QETH_QDIO_CLEANING: 1530 return rc; 1531 default: 1532 break; 1533 } 1534 rc = qeth_clear_halt_card(card, use_halt); 1535 if (rc) 1536 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1537 return rc; 1538 } 1539 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1540 1541 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1542 { 1543 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1544 struct diag26c_vnic_resp *response = NULL; 1545 struct diag26c_vnic_req *request = NULL; 1546 struct ccw_dev_id id; 1547 char userid[80]; 1548 int rc = 0; 1549 1550 QETH_CARD_TEXT(card, 2, "vmlayer"); 1551 1552 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1553 if (rc) 1554 goto out; 1555 1556 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1557 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1558 if (!request || !response) { 1559 rc = -ENOMEM; 1560 goto out; 1561 } 1562 1563 ccw_device_get_id(CARD_RDEV(card), &id); 1564 request->resp_buf_len = sizeof(*response); 1565 request->resp_version = DIAG26C_VERSION6_VM65918; 1566 request->req_format = DIAG26C_VNIC_INFO; 1567 ASCEBC(userid, 8); 1568 memcpy(&request->sys_name, userid, 8); 1569 request->devno = id.devno; 1570 1571 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1572 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1573 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1574 if (rc) 1575 goto out; 1576 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1577 1578 if (request->resp_buf_len < sizeof(*response) || 1579 response->version != request->resp_version) { 1580 rc = -EIO; 1581 goto out; 1582 } 1583 1584 if (response->protocol == VNIC_INFO_PROT_L2) 1585 disc = QETH_DISCIPLINE_LAYER2; 1586 else if (response->protocol == VNIC_INFO_PROT_L3) 1587 disc = QETH_DISCIPLINE_LAYER3; 1588 1589 out: 1590 kfree(response); 1591 kfree(request); 1592 if (rc) 1593 QETH_CARD_TEXT_(card, 2, "err%x", rc); 1594 return disc; 1595 } 1596 1597 /* Determine whether the device requires a specific layer discipline */ 1598 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1599 { 1600 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1601 1602 if (IS_OSM(card) || IS_OSN(card)) 1603 disc = QETH_DISCIPLINE_LAYER2; 1604 else if (IS_VM_NIC(card)) 1605 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : 1606 qeth_vm_detect_layer(card); 1607 1608 switch (disc) { 1609 case QETH_DISCIPLINE_LAYER2: 1610 QETH_CARD_TEXT(card, 3, "force l2"); 1611 break; 1612 case QETH_DISCIPLINE_LAYER3: 1613 QETH_CARD_TEXT(card, 3, "force l3"); 1614 break; 1615 default: 1616 QETH_CARD_TEXT(card, 3, "force no"); 1617 } 1618 1619 return disc; 1620 } 1621 1622 static void qeth_set_blkt_defaults(struct qeth_card *card) 1623 { 1624 QETH_CARD_TEXT(card, 2, "cfgblkt"); 1625 1626 if (card->info.use_v1_blkt) { 1627 card->info.blkt.time_total = 0; 1628 card->info.blkt.inter_packet = 0; 1629 card->info.blkt.inter_packet_jumbo = 0; 1630 } else { 1631 card->info.blkt.time_total = 250; 1632 card->info.blkt.inter_packet = 5; 1633 card->info.blkt.inter_packet_jumbo = 15; 1634 } 1635 } 1636 1637 static void qeth_init_tokens(struct qeth_card *card) 1638 { 1639 card->token.issuer_rm_w = 0x00010103UL; 1640 card->token.cm_filter_w = 0x00010108UL; 1641 card->token.cm_connection_w = 0x0001010aUL; 1642 card->token.ulp_filter_w = 0x0001010bUL; 1643 card->token.ulp_connection_w = 0x0001010dUL; 1644 } 1645 1646 static void qeth_init_func_level(struct qeth_card *card) 1647 { 1648 switch (card->info.type) { 1649 case QETH_CARD_TYPE_IQD: 1650 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1651 break; 1652 case QETH_CARD_TYPE_OSD: 1653 case QETH_CARD_TYPE_OSN: 1654 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1655 break; 1656 default: 1657 break; 1658 } 1659 } 1660 1661 static void qeth_idx_finalize_cmd(struct qeth_card *card, 1662 struct qeth_cmd_buffer *iob) 1663 { 1664 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr, 1665 QETH_SEQ_NO_LENGTH); 1666 if (iob->channel == &card->write) 1667 card->seqno.trans_hdr++; 1668 } 1669 1670 static int qeth_peer_func_level(int level) 1671 { 1672 if ((level & 0xff) == 8) 1673 return (level & 0xff) + 0x400; 1674 if (((level >> 8) & 3) == 1) 1675 return (level & 0xff) + 0x200; 1676 return level; 1677 } 1678 1679 static void qeth_mpc_finalize_cmd(struct qeth_card *card, 1680 struct qeth_cmd_buffer *iob) 1681 { 1682 qeth_idx_finalize_cmd(card, iob); 1683 1684 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 1685 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 1686 card->seqno.pdu_hdr++; 1687 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 1688 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 1689 1690 iob->callback = qeth_release_buffer_cb; 1691 } 1692 1693 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card, 1694 void *data, 1695 unsigned int data_length) 1696 { 1697 struct qeth_cmd_buffer *iob; 1698 1699 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT); 1700 if (!iob) 1701 return NULL; 1702 1703 memcpy(iob->data, data, data_length); 1704 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length, 1705 iob->data); 1706 iob->finalize = qeth_mpc_finalize_cmd; 1707 return iob; 1708 } 1709 1710 /** 1711 * qeth_send_control_data() - send control command to the card 1712 * @card: qeth_card structure pointer 1713 * @iob: qeth_cmd_buffer pointer 1714 * @reply_cb: callback function pointer 1715 * @cb_card: pointer to the qeth_card structure 1716 * @cb_reply: pointer to the qeth_reply structure 1717 * @cb_cmd: pointer to the original iob for non-IPA 1718 * commands, or to the qeth_ipa_cmd structure 1719 * for the IPA commands. 1720 * @reply_param: private pointer passed to the callback 1721 * 1722 * Callback function gets called one or more times, with cb_cmd 1723 * pointing to the response returned by the hardware. Callback 1724 * function must return 1725 * > 0 if more reply blocks are expected, 1726 * 0 if the last or only reply block is received, and 1727 * < 0 on error. 1728 * Callback function can get the value of the reply_param pointer from the 1729 * field 'param' of the structure qeth_reply. 1730 */ 1731 1732 static int qeth_send_control_data(struct qeth_card *card, 1733 struct qeth_cmd_buffer *iob, 1734 int (*reply_cb)(struct qeth_card *cb_card, 1735 struct qeth_reply *cb_reply, 1736 unsigned long cb_cmd), 1737 void *reply_param) 1738 { 1739 struct qeth_channel *channel = iob->channel; 1740 struct qeth_reply *reply = &iob->reply; 1741 long timeout = iob->timeout; 1742 int rc; 1743 1744 QETH_CARD_TEXT(card, 2, "sendctl"); 1745 1746 reply->callback = reply_cb; 1747 reply->param = reply_param; 1748 1749 timeout = wait_event_interruptible_timeout(card->wait_q, 1750 qeth_trylock_channel(channel), 1751 timeout); 1752 if (timeout <= 0) { 1753 qeth_put_cmd(iob); 1754 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; 1755 } 1756 1757 if (iob->finalize) 1758 iob->finalize(card, iob); 1759 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN)); 1760 1761 qeth_enqueue_cmd(card, iob); 1762 1763 /* This pairs with iob->callback, and keeps the iob alive after IO: */ 1764 qeth_get_cmd(iob); 1765 1766 QETH_CARD_TEXT(card, 6, "noirqpnd"); 1767 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1768 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob), 1769 (addr_t) iob, 0, 0, timeout); 1770 if (!rc) 1771 channel->active_cmd = iob; 1772 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1773 if (rc) { 1774 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n", 1775 CARD_DEVID(card), rc); 1776 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1777 qeth_dequeue_cmd(card, iob); 1778 qeth_put_cmd(iob); 1779 qeth_unlock_channel(card, channel); 1780 goto out; 1781 } 1782 1783 timeout = wait_for_completion_interruptible_timeout(&iob->done, 1784 timeout); 1785 if (timeout <= 0) 1786 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; 1787 1788 qeth_dequeue_cmd(card, iob); 1789 1790 if (reply_cb) { 1791 /* Wait until the callback for a late reply has completed: */ 1792 spin_lock_irq(&iob->lock); 1793 if (rc) 1794 /* Zap any callback that's still pending: */ 1795 iob->rc = rc; 1796 spin_unlock_irq(&iob->lock); 1797 } 1798 1799 if (!rc) 1800 rc = iob->rc; 1801 1802 out: 1803 qeth_put_cmd(iob); 1804 return rc; 1805 } 1806 1807 struct qeth_node_desc { 1808 struct node_descriptor nd1; 1809 struct node_descriptor nd2; 1810 struct node_descriptor nd3; 1811 }; 1812 1813 static void qeth_read_conf_data_cb(struct qeth_card *card, 1814 struct qeth_cmd_buffer *iob, 1815 unsigned int data_length) 1816 { 1817 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data; 1818 int rc = 0; 1819 u8 *tag; 1820 1821 QETH_CARD_TEXT(card, 2, "cfgunit"); 1822 1823 if (data_length < sizeof(*nd)) { 1824 rc = -EINVAL; 1825 goto out; 1826 } 1827 1828 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] && 1829 nd->nd1.plant[1] == _ascebc['M']; 1830 tag = (u8 *)&nd->nd1.tag; 1831 card->info.chpid = tag[0]; 1832 card->info.unit_addr2 = tag[1]; 1833 1834 tag = (u8 *)&nd->nd2.tag; 1835 card->info.cula = tag[1]; 1836 1837 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 && 1838 nd->nd3.model[1] == 0xF0 && 1839 nd->nd3.model[2] >= 0xF1 && 1840 nd->nd3.model[2] <= 0xF4; 1841 1842 out: 1843 qeth_notify_cmd(iob, rc); 1844 qeth_put_cmd(iob); 1845 } 1846 1847 static int qeth_read_conf_data(struct qeth_card *card) 1848 { 1849 struct qeth_channel *channel = &card->data; 1850 struct qeth_cmd_buffer *iob; 1851 struct ciw *ciw; 1852 1853 /* scan for RCD command in extended SenseID data */ 1854 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1855 if (!ciw || ciw->cmd == 0) 1856 return -EOPNOTSUPP; 1857 if (ciw->count < sizeof(struct qeth_node_desc)) 1858 return -EINVAL; 1859 1860 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT); 1861 if (!iob) 1862 return -ENOMEM; 1863 1864 iob->callback = qeth_read_conf_data_cb; 1865 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length, 1866 iob->data); 1867 1868 return qeth_send_control_data(card, iob, NULL, NULL); 1869 } 1870 1871 static int qeth_idx_check_activate_response(struct qeth_card *card, 1872 struct qeth_channel *channel, 1873 struct qeth_cmd_buffer *iob) 1874 { 1875 int rc; 1876 1877 rc = qeth_check_idx_response(card, iob->data); 1878 if (rc) 1879 return rc; 1880 1881 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data)) 1882 return 0; 1883 1884 /* negative reply: */ 1885 QETH_CARD_TEXT_(card, 2, "idxneg%c", 1886 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1887 1888 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1889 case QETH_IDX_ACT_ERR_EXCL: 1890 dev_err(&channel->ccwdev->dev, 1891 "The adapter is used exclusively by another host\n"); 1892 return -EBUSY; 1893 case QETH_IDX_ACT_ERR_AUTH: 1894 case QETH_IDX_ACT_ERR_AUTH_USER: 1895 dev_err(&channel->ccwdev->dev, 1896 "Setting the device online failed because of insufficient authorization\n"); 1897 return -EPERM; 1898 default: 1899 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n", 1900 CCW_DEVID(channel->ccwdev)); 1901 return -EIO; 1902 } 1903 } 1904 1905 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card, 1906 struct qeth_cmd_buffer *iob, 1907 unsigned int data_length) 1908 { 1909 struct qeth_channel *channel = iob->channel; 1910 u16 peer_level; 1911 int rc; 1912 1913 QETH_CARD_TEXT(card, 2, "idxrdcb"); 1914 1915 rc = qeth_idx_check_activate_response(card, channel, iob); 1916 if (rc) 1917 goto out; 1918 1919 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1920 if (peer_level != qeth_peer_func_level(card->info.func_level)) { 1921 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", 1922 CCW_DEVID(channel->ccwdev), 1923 card->info.func_level, peer_level); 1924 rc = -EINVAL; 1925 goto out; 1926 } 1927 1928 memcpy(&card->token.issuer_rm_r, 1929 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1930 QETH_MPC_TOKEN_LENGTH); 1931 memcpy(&card->info.mcl_level[0], 1932 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1933 1934 out: 1935 qeth_notify_cmd(iob, rc); 1936 qeth_put_cmd(iob); 1937 } 1938 1939 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card, 1940 struct qeth_cmd_buffer *iob, 1941 unsigned int data_length) 1942 { 1943 struct qeth_channel *channel = iob->channel; 1944 u16 peer_level; 1945 int rc; 1946 1947 QETH_CARD_TEXT(card, 2, "idxwrcb"); 1948 1949 rc = qeth_idx_check_activate_response(card, channel, iob); 1950 if (rc) 1951 goto out; 1952 1953 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1954 if ((peer_level & ~0x0100) != 1955 qeth_peer_func_level(card->info.func_level)) { 1956 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", 1957 CCW_DEVID(channel->ccwdev), 1958 card->info.func_level, peer_level); 1959 rc = -EINVAL; 1960 } 1961 1962 out: 1963 qeth_notify_cmd(iob, rc); 1964 qeth_put_cmd(iob); 1965 } 1966 1967 static void qeth_idx_setup_activate_cmd(struct qeth_card *card, 1968 struct qeth_cmd_buffer *iob) 1969 { 1970 u16 addr = (card->info.cula << 8) + card->info.unit_addr2; 1971 u8 port = ((u8)card->dev->dev_port) | 0x80; 1972 struct ccw1 *ccw = __ccw_from_cmd(iob); 1973 struct ccw_dev_id dev_id; 1974 1975 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE, 1976 iob->data); 1977 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data); 1978 ccw_device_get_id(CARD_DDEV(card), &dev_id); 1979 iob->finalize = qeth_idx_finalize_cmd; 1980 1981 port |= QETH_IDX_ACT_INVAL_FRAME; 1982 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1); 1983 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1984 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1985 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1986 &card->info.func_level, 2); 1987 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2); 1988 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2); 1989 } 1990 1991 static int qeth_idx_activate_read_channel(struct qeth_card *card) 1992 { 1993 struct qeth_channel *channel = &card->read; 1994 struct qeth_cmd_buffer *iob; 1995 int rc; 1996 1997 QETH_CARD_TEXT(card, 2, "idxread"); 1998 1999 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT); 2000 if (!iob) 2001 return -ENOMEM; 2002 2003 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 2004 qeth_idx_setup_activate_cmd(card, iob); 2005 iob->callback = qeth_idx_activate_read_channel_cb; 2006 2007 rc = qeth_send_control_data(card, iob, NULL, NULL); 2008 if (rc) 2009 return rc; 2010 2011 channel->state = CH_STATE_UP; 2012 return 0; 2013 } 2014 2015 static int qeth_idx_activate_write_channel(struct qeth_card *card) 2016 { 2017 struct qeth_channel *channel = &card->write; 2018 struct qeth_cmd_buffer *iob; 2019 int rc; 2020 2021 QETH_CARD_TEXT(card, 2, "idxwrite"); 2022 2023 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT); 2024 if (!iob) 2025 return -ENOMEM; 2026 2027 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 2028 qeth_idx_setup_activate_cmd(card, iob); 2029 iob->callback = qeth_idx_activate_write_channel_cb; 2030 2031 rc = qeth_send_control_data(card, iob, NULL, NULL); 2032 if (rc) 2033 return rc; 2034 2035 channel->state = CH_STATE_UP; 2036 return 0; 2037 } 2038 2039 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2040 unsigned long data) 2041 { 2042 struct qeth_cmd_buffer *iob; 2043 2044 QETH_CARD_TEXT(card, 2, "cmenblcb"); 2045 2046 iob = (struct qeth_cmd_buffer *) data; 2047 memcpy(&card->token.cm_filter_r, 2048 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2049 QETH_MPC_TOKEN_LENGTH); 2050 return 0; 2051 } 2052 2053 static int qeth_cm_enable(struct qeth_card *card) 2054 { 2055 struct qeth_cmd_buffer *iob; 2056 2057 QETH_CARD_TEXT(card, 2, "cmenable"); 2058 2059 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE); 2060 if (!iob) 2061 return -ENOMEM; 2062 2063 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2064 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2065 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2066 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2067 2068 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL); 2069 } 2070 2071 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2072 unsigned long data) 2073 { 2074 struct qeth_cmd_buffer *iob; 2075 2076 QETH_CARD_TEXT(card, 2, "cmsetpcb"); 2077 2078 iob = (struct qeth_cmd_buffer *) data; 2079 memcpy(&card->token.cm_connection_r, 2080 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2081 QETH_MPC_TOKEN_LENGTH); 2082 return 0; 2083 } 2084 2085 static int qeth_cm_setup(struct qeth_card *card) 2086 { 2087 struct qeth_cmd_buffer *iob; 2088 2089 QETH_CARD_TEXT(card, 2, "cmsetup"); 2090 2091 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE); 2092 if (!iob) 2093 return -ENOMEM; 2094 2095 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2096 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2097 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2098 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2099 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2100 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2101 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL); 2102 } 2103 2104 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu) 2105 { 2106 struct net_device *dev = card->dev; 2107 unsigned int new_mtu; 2108 2109 if (!max_mtu) { 2110 /* IQD needs accurate max MTU to set up its RX buffers: */ 2111 if (IS_IQD(card)) 2112 return -EINVAL; 2113 /* tolerate quirky HW: */ 2114 max_mtu = ETH_MAX_MTU; 2115 } 2116 2117 rtnl_lock(); 2118 if (IS_IQD(card)) { 2119 /* move any device with default MTU to new max MTU: */ 2120 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu; 2121 2122 /* adjust RX buffer size to new max MTU: */ 2123 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE; 2124 if (dev->max_mtu && dev->max_mtu != max_mtu) 2125 qeth_free_qdio_queues(card); 2126 } else { 2127 if (dev->mtu) 2128 new_mtu = dev->mtu; 2129 /* default MTUs for first setup: */ 2130 else if (IS_LAYER2(card)) 2131 new_mtu = ETH_DATA_LEN; 2132 else 2133 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */ 2134 } 2135 2136 dev->max_mtu = max_mtu; 2137 dev->mtu = min(new_mtu, max_mtu); 2138 rtnl_unlock(); 2139 return 0; 2140 } 2141 2142 static int qeth_get_mtu_outof_framesize(int framesize) 2143 { 2144 switch (framesize) { 2145 case 0x4000: 2146 return 8192; 2147 case 0x6000: 2148 return 16384; 2149 case 0xa000: 2150 return 32768; 2151 case 0xffff: 2152 return 57344; 2153 default: 2154 return 0; 2155 } 2156 } 2157 2158 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2159 unsigned long data) 2160 { 2161 __u16 mtu, framesize; 2162 __u16 len; 2163 __u8 link_type; 2164 struct qeth_cmd_buffer *iob; 2165 2166 QETH_CARD_TEXT(card, 2, "ulpenacb"); 2167 2168 iob = (struct qeth_cmd_buffer *) data; 2169 memcpy(&card->token.ulp_filter_r, 2170 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2171 QETH_MPC_TOKEN_LENGTH); 2172 if (IS_IQD(card)) { 2173 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2174 mtu = qeth_get_mtu_outof_framesize(framesize); 2175 } else { 2176 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data); 2177 } 2178 *(u16 *)reply->param = mtu; 2179 2180 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2181 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2182 memcpy(&link_type, 2183 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2184 card->info.link_type = link_type; 2185 } else 2186 card->info.link_type = 0; 2187 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type); 2188 return 0; 2189 } 2190 2191 static u8 qeth_mpc_select_prot_type(struct qeth_card *card) 2192 { 2193 if (IS_OSN(card)) 2194 return QETH_PROT_OSN2; 2195 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP; 2196 } 2197 2198 static int qeth_ulp_enable(struct qeth_card *card) 2199 { 2200 u8 prot_type = qeth_mpc_select_prot_type(card); 2201 struct qeth_cmd_buffer *iob; 2202 u16 max_mtu; 2203 int rc; 2204 2205 QETH_CARD_TEXT(card, 2, "ulpenabl"); 2206 2207 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE); 2208 if (!iob) 2209 return -ENOMEM; 2210 2211 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port; 2212 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2213 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2214 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2215 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2216 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2217 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu); 2218 if (rc) 2219 return rc; 2220 return qeth_update_max_mtu(card, max_mtu); 2221 } 2222 2223 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2224 unsigned long data) 2225 { 2226 struct qeth_cmd_buffer *iob; 2227 2228 QETH_CARD_TEXT(card, 2, "ulpstpcb"); 2229 2230 iob = (struct qeth_cmd_buffer *) data; 2231 memcpy(&card->token.ulp_connection_r, 2232 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2233 QETH_MPC_TOKEN_LENGTH); 2234 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2235 3)) { 2236 QETH_CARD_TEXT(card, 2, "olmlimit"); 2237 dev_err(&card->gdev->dev, "A connection could not be " 2238 "established because of an OLM limit\n"); 2239 return -EMLINK; 2240 } 2241 return 0; 2242 } 2243 2244 static int qeth_ulp_setup(struct qeth_card *card) 2245 { 2246 __u16 temp; 2247 struct qeth_cmd_buffer *iob; 2248 struct ccw_dev_id dev_id; 2249 2250 QETH_CARD_TEXT(card, 2, "ulpsetup"); 2251 2252 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE); 2253 if (!iob) 2254 return -ENOMEM; 2255 2256 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2257 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2258 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2259 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2260 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2261 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2262 2263 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2264 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2265 temp = (card->info.cula << 8) + card->info.unit_addr2; 2266 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2267 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL); 2268 } 2269 2270 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2271 { 2272 struct qeth_qdio_out_buffer *newbuf; 2273 2274 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2275 if (!newbuf) 2276 return -ENOMEM; 2277 2278 newbuf->buffer = q->qdio_bufs[bidx]; 2279 skb_queue_head_init(&newbuf->skb_list); 2280 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2281 newbuf->q = q; 2282 newbuf->next_pending = q->bufs[bidx]; 2283 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2284 q->bufs[bidx] = newbuf; 2285 return 0; 2286 } 2287 2288 static void qeth_free_output_queue(struct qeth_qdio_out_q *q) 2289 { 2290 if (!q) 2291 return; 2292 2293 qeth_drain_output_queue(q, true); 2294 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2295 kfree(q); 2296 } 2297 2298 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void) 2299 { 2300 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2301 2302 if (!q) 2303 return NULL; 2304 2305 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2306 kfree(q); 2307 return NULL; 2308 } 2309 return q; 2310 } 2311 2312 static void qeth_tx_completion_timer(struct timer_list *timer) 2313 { 2314 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer); 2315 2316 napi_schedule(&queue->napi); 2317 QETH_TXQ_STAT_INC(queue, completion_timer); 2318 } 2319 2320 static int qeth_alloc_qdio_queues(struct qeth_card *card) 2321 { 2322 int i, j; 2323 2324 QETH_CARD_TEXT(card, 2, "allcqdbf"); 2325 2326 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2327 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2328 return 0; 2329 2330 QETH_CARD_TEXT(card, 2, "inq"); 2331 card->qdio.in_q = qeth_alloc_qdio_queue(); 2332 if (!card->qdio.in_q) 2333 goto out_nomem; 2334 2335 /* inbound buffer pool */ 2336 if (qeth_alloc_buffer_pool(card)) 2337 goto out_freeinq; 2338 2339 /* outbound */ 2340 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2341 struct qeth_qdio_out_q *queue; 2342 2343 queue = qeth_alloc_output_queue(); 2344 if (!queue) 2345 goto out_freeoutq; 2346 QETH_CARD_TEXT_(card, 2, "outq %i", i); 2347 QETH_CARD_HEX(card, 2, &queue, sizeof(void *)); 2348 card->qdio.out_qs[i] = queue; 2349 queue->card = card; 2350 queue->queue_no = i; 2351 timer_setup(&queue->timer, qeth_tx_completion_timer, 0); 2352 2353 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2354 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2355 WARN_ON(queue->bufs[j]); 2356 if (qeth_init_qdio_out_buf(queue, j)) 2357 goto out_freeoutqbufs; 2358 } 2359 } 2360 2361 /* completion */ 2362 if (qeth_alloc_cq(card)) 2363 goto out_freeoutq; 2364 2365 return 0; 2366 2367 out_freeoutqbufs: 2368 while (j > 0) { 2369 --j; 2370 kmem_cache_free(qeth_qdio_outbuf_cache, 2371 card->qdio.out_qs[i]->bufs[j]); 2372 card->qdio.out_qs[i]->bufs[j] = NULL; 2373 } 2374 out_freeoutq: 2375 while (i > 0) { 2376 qeth_free_output_queue(card->qdio.out_qs[--i]); 2377 card->qdio.out_qs[i] = NULL; 2378 } 2379 qeth_free_buffer_pool(card); 2380 out_freeinq: 2381 qeth_free_qdio_queue(card->qdio.in_q); 2382 card->qdio.in_q = NULL; 2383 out_nomem: 2384 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2385 return -ENOMEM; 2386 } 2387 2388 static void qeth_free_qdio_queues(struct qeth_card *card) 2389 { 2390 int i, j; 2391 2392 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2393 QETH_QDIO_UNINITIALIZED) 2394 return; 2395 2396 qeth_free_cq(card); 2397 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2398 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2399 if (card->qdio.in_q->bufs[j].rx_skb) 2400 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2401 } 2402 qeth_free_qdio_queue(card->qdio.in_q); 2403 card->qdio.in_q = NULL; 2404 /* inbound buffer pool */ 2405 qeth_free_buffer_pool(card); 2406 /* free outbound qdio_qs */ 2407 for (i = 0; i < card->qdio.no_out_queues; i++) { 2408 qeth_free_output_queue(card->qdio.out_qs[i]); 2409 card->qdio.out_qs[i] = NULL; 2410 } 2411 } 2412 2413 static void qeth_create_qib_param_field(struct qeth_card *card, 2414 char *param_field) 2415 { 2416 2417 param_field[0] = _ascebc['P']; 2418 param_field[1] = _ascebc['C']; 2419 param_field[2] = _ascebc['I']; 2420 param_field[3] = _ascebc['T']; 2421 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2422 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2423 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2424 } 2425 2426 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2427 char *param_field) 2428 { 2429 param_field[16] = _ascebc['B']; 2430 param_field[17] = _ascebc['L']; 2431 param_field[18] = _ascebc['K']; 2432 param_field[19] = _ascebc['T']; 2433 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2434 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2435 *((unsigned int *) (¶m_field[28])) = 2436 card->info.blkt.inter_packet_jumbo; 2437 } 2438 2439 static int qeth_qdio_activate(struct qeth_card *card) 2440 { 2441 QETH_CARD_TEXT(card, 3, "qdioact"); 2442 return qdio_activate(CARD_DDEV(card)); 2443 } 2444 2445 static int qeth_dm_act(struct qeth_card *card) 2446 { 2447 struct qeth_cmd_buffer *iob; 2448 2449 QETH_CARD_TEXT(card, 2, "dmact"); 2450 2451 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE); 2452 if (!iob) 2453 return -ENOMEM; 2454 2455 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2456 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2457 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2458 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2459 return qeth_send_control_data(card, iob, NULL, NULL); 2460 } 2461 2462 static int qeth_mpc_initialize(struct qeth_card *card) 2463 { 2464 int rc; 2465 2466 QETH_CARD_TEXT(card, 2, "mpcinit"); 2467 2468 rc = qeth_issue_next_read(card); 2469 if (rc) { 2470 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 2471 return rc; 2472 } 2473 rc = qeth_cm_enable(card); 2474 if (rc) { 2475 QETH_CARD_TEXT_(card, 2, "2err%d", rc); 2476 goto out_qdio; 2477 } 2478 rc = qeth_cm_setup(card); 2479 if (rc) { 2480 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 2481 goto out_qdio; 2482 } 2483 rc = qeth_ulp_enable(card); 2484 if (rc) { 2485 QETH_CARD_TEXT_(card, 2, "4err%d", rc); 2486 goto out_qdio; 2487 } 2488 rc = qeth_ulp_setup(card); 2489 if (rc) { 2490 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 2491 goto out_qdio; 2492 } 2493 rc = qeth_alloc_qdio_queues(card); 2494 if (rc) { 2495 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 2496 goto out_qdio; 2497 } 2498 rc = qeth_qdio_establish(card); 2499 if (rc) { 2500 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 2501 qeth_free_qdio_queues(card); 2502 goto out_qdio; 2503 } 2504 rc = qeth_qdio_activate(card); 2505 if (rc) { 2506 QETH_CARD_TEXT_(card, 2, "7err%d", rc); 2507 goto out_qdio; 2508 } 2509 rc = qeth_dm_act(card); 2510 if (rc) { 2511 QETH_CARD_TEXT_(card, 2, "8err%d", rc); 2512 goto out_qdio; 2513 } 2514 2515 return 0; 2516 out_qdio: 2517 qeth_qdio_clear_card(card, !IS_IQD(card)); 2518 qdio_free(CARD_DDEV(card)); 2519 return rc; 2520 } 2521 2522 void qeth_print_status_message(struct qeth_card *card) 2523 { 2524 switch (card->info.type) { 2525 case QETH_CARD_TYPE_OSD: 2526 case QETH_CARD_TYPE_OSM: 2527 case QETH_CARD_TYPE_OSX: 2528 /* VM will use a non-zero first character 2529 * to indicate a HiperSockets like reporting 2530 * of the level OSA sets the first character to zero 2531 * */ 2532 if (!card->info.mcl_level[0]) { 2533 sprintf(card->info.mcl_level, "%02x%02x", 2534 card->info.mcl_level[2], 2535 card->info.mcl_level[3]); 2536 break; 2537 } 2538 /* fallthrough */ 2539 case QETH_CARD_TYPE_IQD: 2540 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) { 2541 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2542 card->info.mcl_level[0]]; 2543 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2544 card->info.mcl_level[1]]; 2545 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2546 card->info.mcl_level[2]]; 2547 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2548 card->info.mcl_level[3]]; 2549 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2550 } 2551 break; 2552 default: 2553 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2554 } 2555 dev_info(&card->gdev->dev, 2556 "Device is a%s card%s%s%s\nwith link type %s.\n", 2557 qeth_get_cardname(card), 2558 (card->info.mcl_level[0]) ? " (level: " : "", 2559 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2560 (card->info.mcl_level[0]) ? ")" : "", 2561 qeth_get_cardname_short(card)); 2562 } 2563 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2564 2565 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2566 { 2567 struct qeth_buffer_pool_entry *entry; 2568 2569 QETH_CARD_TEXT(card, 5, "inwrklst"); 2570 2571 list_for_each_entry(entry, 2572 &card->qdio.init_pool.entry_list, init_list) { 2573 qeth_put_buffer_pool_entry(card, entry); 2574 } 2575 } 2576 2577 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2578 struct qeth_card *card) 2579 { 2580 struct list_head *plh; 2581 struct qeth_buffer_pool_entry *entry; 2582 int i, free; 2583 struct page *page; 2584 2585 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2586 return NULL; 2587 2588 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2589 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2590 free = 1; 2591 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2592 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2593 free = 0; 2594 break; 2595 } 2596 } 2597 if (free) { 2598 list_del_init(&entry->list); 2599 return entry; 2600 } 2601 } 2602 2603 /* no free buffer in pool so take first one and swap pages */ 2604 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2605 struct qeth_buffer_pool_entry, list); 2606 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2607 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2608 page = alloc_page(GFP_ATOMIC); 2609 if (!page) { 2610 return NULL; 2611 } else { 2612 free_page((unsigned long)entry->elements[i]); 2613 entry->elements[i] = page_address(page); 2614 QETH_CARD_STAT_INC(card, rx_sg_alloc_page); 2615 } 2616 } 2617 } 2618 list_del_init(&entry->list); 2619 return entry; 2620 } 2621 2622 static int qeth_init_input_buffer(struct qeth_card *card, 2623 struct qeth_qdio_buffer *buf) 2624 { 2625 struct qeth_buffer_pool_entry *pool_entry; 2626 int i; 2627 2628 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2629 buf->rx_skb = netdev_alloc_skb(card->dev, 2630 QETH_RX_PULL_LEN + ETH_HLEN); 2631 if (!buf->rx_skb) 2632 return 1; 2633 } 2634 2635 pool_entry = qeth_find_free_buffer_pool_entry(card); 2636 if (!pool_entry) 2637 return 1; 2638 2639 /* 2640 * since the buffer is accessed only from the input_tasklet 2641 * there shouldn't be a need to synchronize; also, since we use 2642 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2643 * buffers 2644 */ 2645 2646 buf->pool_entry = pool_entry; 2647 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2648 buf->buffer->element[i].length = PAGE_SIZE; 2649 buf->buffer->element[i].addr = pool_entry->elements[i]; 2650 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2651 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2652 else 2653 buf->buffer->element[i].eflags = 0; 2654 buf->buffer->element[i].sflags = 0; 2655 } 2656 return 0; 2657 } 2658 2659 static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card, 2660 struct qeth_qdio_out_q *queue) 2661 { 2662 if (!IS_IQD(card) || 2663 qeth_iqd_is_mcast_queue(card, queue) || 2664 card->options.cq == QETH_CQ_ENABLED || 2665 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd)) 2666 return 1; 2667 2668 return card->ssqd.mmwc ? card->ssqd.mmwc : 1; 2669 } 2670 2671 int qeth_init_qdio_queues(struct qeth_card *card) 2672 { 2673 unsigned int i; 2674 int rc; 2675 2676 QETH_CARD_TEXT(card, 2, "initqdqs"); 2677 2678 /* inbound queue */ 2679 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2680 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2681 qeth_initialize_working_pool_list(card); 2682 /*give only as many buffers to hardware as we have buffer pool entries*/ 2683 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2684 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2685 card->qdio.in_q->next_buf_to_init = 2686 card->qdio.in_buf_pool.buf_count - 1; 2687 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2688 card->qdio.in_buf_pool.buf_count - 1); 2689 if (rc) { 2690 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 2691 return rc; 2692 } 2693 2694 /* completion */ 2695 rc = qeth_cq_init(card); 2696 if (rc) { 2697 return rc; 2698 } 2699 2700 /* outbound queue */ 2701 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2702 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i]; 2703 2704 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2705 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card); 2706 queue->next_buf_to_fill = 0; 2707 queue->do_pack = 0; 2708 queue->prev_hdr = NULL; 2709 queue->bulk_start = 0; 2710 queue->bulk_count = 0; 2711 queue->bulk_max = qeth_tx_select_bulk_max(card, queue); 2712 atomic_set(&queue->used_buffers, 0); 2713 atomic_set(&queue->set_pci_flags_count, 0); 2714 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 2715 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i)); 2716 } 2717 return 0; 2718 } 2719 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2720 2721 static void qeth_ipa_finalize_cmd(struct qeth_card *card, 2722 struct qeth_cmd_buffer *iob) 2723 { 2724 qeth_mpc_finalize_cmd(card, iob); 2725 2726 /* override with IPA-specific values: */ 2727 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++; 2728 } 2729 2730 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2731 u16 cmd_length) 2732 { 2733 u8 prot_type = qeth_mpc_select_prot_type(card); 2734 u16 total_length = iob->length; 2735 2736 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length, 2737 iob->data); 2738 iob->finalize = qeth_ipa_finalize_cmd; 2739 2740 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2741 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2); 2742 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2743 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2); 2744 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2); 2745 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2746 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2747 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2); 2748 } 2749 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2750 2751 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 2752 enum qeth_ipa_cmds cmd_code, 2753 enum qeth_prot_versions prot, 2754 unsigned int data_length) 2755 { 2756 enum qeth_link_types link_type = card->info.link_type; 2757 struct qeth_cmd_buffer *iob; 2758 struct qeth_ipacmd_hdr *hdr; 2759 2760 data_length += offsetof(struct qeth_ipa_cmd, data); 2761 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1, 2762 QETH_IPA_TIMEOUT); 2763 if (!iob) 2764 return NULL; 2765 2766 qeth_prepare_ipa_cmd(card, iob, data_length); 2767 2768 hdr = &__ipa_cmd(iob)->hdr; 2769 hdr->command = cmd_code; 2770 hdr->initiator = IPA_CMD_INITIATOR_HOST; 2771 /* hdr->seqno is set by qeth_send_control_data() */ 2772 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1; 2773 hdr->rel_adapter_no = (u8) card->dev->dev_port; 2774 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1; 2775 hdr->param_count = 1; 2776 hdr->prot_version = prot; 2777 return iob; 2778 } 2779 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd); 2780 2781 static int qeth_send_ipa_cmd_cb(struct qeth_card *card, 2782 struct qeth_reply *reply, unsigned long data) 2783 { 2784 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2785 2786 return (cmd->hdr.return_code) ? -EIO : 0; 2787 } 2788 2789 /** 2790 * qeth_send_ipa_cmd() - send an IPA command 2791 * 2792 * See qeth_send_control_data() for explanation of the arguments. 2793 */ 2794 2795 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2796 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2797 unsigned long), 2798 void *reply_param) 2799 { 2800 int rc; 2801 2802 QETH_CARD_TEXT(card, 4, "sendipa"); 2803 2804 if (card->read_or_write_problem) { 2805 qeth_put_cmd(iob); 2806 return -EIO; 2807 } 2808 2809 if (reply_cb == NULL) 2810 reply_cb = qeth_send_ipa_cmd_cb; 2811 rc = qeth_send_control_data(card, iob, reply_cb, reply_param); 2812 if (rc == -ETIME) { 2813 qeth_clear_ipacmd_list(card); 2814 qeth_schedule_recovery(card); 2815 } 2816 return rc; 2817 } 2818 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2819 2820 static int qeth_send_startlan_cb(struct qeth_card *card, 2821 struct qeth_reply *reply, unsigned long data) 2822 { 2823 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2824 2825 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE) 2826 return -ENETDOWN; 2827 2828 return (cmd->hdr.return_code) ? -EIO : 0; 2829 } 2830 2831 static int qeth_send_startlan(struct qeth_card *card) 2832 { 2833 struct qeth_cmd_buffer *iob; 2834 2835 QETH_CARD_TEXT(card, 2, "strtlan"); 2836 2837 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0); 2838 if (!iob) 2839 return -ENOMEM; 2840 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL); 2841 } 2842 2843 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 2844 { 2845 if (!cmd->hdr.return_code) 2846 cmd->hdr.return_code = 2847 cmd->data.setadapterparms.hdr.return_code; 2848 return cmd->hdr.return_code; 2849 } 2850 2851 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2852 struct qeth_reply *reply, unsigned long data) 2853 { 2854 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2855 2856 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2857 if (qeth_setadpparms_inspect_rc(cmd)) 2858 return -EIO; 2859 2860 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2861 card->info.link_type = 2862 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2863 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type); 2864 } 2865 card->options.adp.supported = 2866 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2867 return 0; 2868 } 2869 2870 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2871 enum qeth_ipa_setadp_cmd adp_cmd, 2872 unsigned int data_length) 2873 { 2874 struct qeth_ipacmd_setadpparms_hdr *hdr; 2875 struct qeth_cmd_buffer *iob; 2876 2877 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4, 2878 data_length + 2879 offsetof(struct qeth_ipacmd_setadpparms, 2880 data)); 2881 if (!iob) 2882 return NULL; 2883 2884 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr; 2885 hdr->cmdlength = sizeof(*hdr) + data_length; 2886 hdr->command_code = adp_cmd; 2887 hdr->used_total = 1; 2888 hdr->seq_no = 1; 2889 return iob; 2890 } 2891 2892 static int qeth_query_setadapterparms(struct qeth_card *card) 2893 { 2894 int rc; 2895 struct qeth_cmd_buffer *iob; 2896 2897 QETH_CARD_TEXT(card, 3, "queryadp"); 2898 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 2899 SETADP_DATA_SIZEOF(query_cmds_supp)); 2900 if (!iob) 2901 return -ENOMEM; 2902 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 2903 return rc; 2904 } 2905 2906 static int qeth_query_ipassists_cb(struct qeth_card *card, 2907 struct qeth_reply *reply, unsigned long data) 2908 { 2909 struct qeth_ipa_cmd *cmd; 2910 2911 QETH_CARD_TEXT(card, 2, "qipasscb"); 2912 2913 cmd = (struct qeth_ipa_cmd *) data; 2914 2915 switch (cmd->hdr.return_code) { 2916 case IPA_RC_SUCCESS: 2917 break; 2918 case IPA_RC_NOTSUPP: 2919 case IPA_RC_L2_UNSUPPORTED_CMD: 2920 QETH_CARD_TEXT(card, 2, "ipaunsup"); 2921 card->options.ipa4.supported |= IPA_SETADAPTERPARMS; 2922 card->options.ipa6.supported |= IPA_SETADAPTERPARMS; 2923 return -EOPNOTSUPP; 2924 default: 2925 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n", 2926 CARD_DEVID(card), cmd->hdr.return_code); 2927 return -EIO; 2928 } 2929 2930 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 2931 card->options.ipa4 = cmd->hdr.assists; 2932 else if (cmd->hdr.prot_version == QETH_PROT_IPV6) 2933 card->options.ipa6 = cmd->hdr.assists; 2934 else 2935 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n", 2936 CARD_DEVID(card)); 2937 return 0; 2938 } 2939 2940 static int qeth_query_ipassists(struct qeth_card *card, 2941 enum qeth_prot_versions prot) 2942 { 2943 int rc; 2944 struct qeth_cmd_buffer *iob; 2945 2946 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot); 2947 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0); 2948 if (!iob) 2949 return -ENOMEM; 2950 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 2951 return rc; 2952 } 2953 2954 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 2955 struct qeth_reply *reply, unsigned long data) 2956 { 2957 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2958 struct qeth_query_switch_attributes *attrs; 2959 struct qeth_switch_info *sw_info; 2960 2961 QETH_CARD_TEXT(card, 2, "qswiatcb"); 2962 if (qeth_setadpparms_inspect_rc(cmd)) 2963 return -EIO; 2964 2965 sw_info = (struct qeth_switch_info *)reply->param; 2966 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 2967 sw_info->capabilities = attrs->capabilities; 2968 sw_info->settings = attrs->settings; 2969 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 2970 sw_info->settings); 2971 return 0; 2972 } 2973 2974 int qeth_query_switch_attributes(struct qeth_card *card, 2975 struct qeth_switch_info *sw_info) 2976 { 2977 struct qeth_cmd_buffer *iob; 2978 2979 QETH_CARD_TEXT(card, 2, "qswiattr"); 2980 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 2981 return -EOPNOTSUPP; 2982 if (!netif_carrier_ok(card->dev)) 2983 return -ENOMEDIUM; 2984 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0); 2985 if (!iob) 2986 return -ENOMEM; 2987 return qeth_send_ipa_cmd(card, iob, 2988 qeth_query_switch_attributes_cb, sw_info); 2989 } 2990 2991 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 2992 enum qeth_diags_cmds sub_cmd, 2993 unsigned int data_length) 2994 { 2995 struct qeth_ipacmd_diagass *cmd; 2996 struct qeth_cmd_buffer *iob; 2997 2998 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE, 2999 DIAG_HDR_LEN + data_length); 3000 if (!iob) 3001 return NULL; 3002 3003 cmd = &__ipa_cmd(iob)->data.diagass; 3004 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length; 3005 cmd->subcmd = sub_cmd; 3006 return iob; 3007 } 3008 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd); 3009 3010 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3011 struct qeth_reply *reply, unsigned long data) 3012 { 3013 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3014 u16 rc = cmd->hdr.return_code; 3015 3016 if (rc) { 3017 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3018 return -EIO; 3019 } 3020 3021 card->info.diagass_support = cmd->data.diagass.ext; 3022 return 0; 3023 } 3024 3025 static int qeth_query_setdiagass(struct qeth_card *card) 3026 { 3027 struct qeth_cmd_buffer *iob; 3028 3029 QETH_CARD_TEXT(card, 2, "qdiagass"); 3030 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0); 3031 if (!iob) 3032 return -ENOMEM; 3033 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3034 } 3035 3036 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3037 { 3038 unsigned long info = get_zeroed_page(GFP_KERNEL); 3039 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3040 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3041 struct ccw_dev_id ccwid; 3042 int level; 3043 3044 tid->chpid = card->info.chpid; 3045 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3046 tid->ssid = ccwid.ssid; 3047 tid->devno = ccwid.devno; 3048 if (!info) 3049 return; 3050 level = stsi(NULL, 0, 0, 0); 3051 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3052 tid->lparnr = info222->lpar_number; 3053 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3054 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3055 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3056 } 3057 free_page(info); 3058 return; 3059 } 3060 3061 static int qeth_hw_trap_cb(struct qeth_card *card, 3062 struct qeth_reply *reply, unsigned long data) 3063 { 3064 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3065 u16 rc = cmd->hdr.return_code; 3066 3067 if (rc) { 3068 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3069 return -EIO; 3070 } 3071 return 0; 3072 } 3073 3074 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3075 { 3076 struct qeth_cmd_buffer *iob; 3077 struct qeth_ipa_cmd *cmd; 3078 3079 QETH_CARD_TEXT(card, 2, "diagtrap"); 3080 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64); 3081 if (!iob) 3082 return -ENOMEM; 3083 cmd = __ipa_cmd(iob); 3084 cmd->data.diagass.type = 1; 3085 cmd->data.diagass.action = action; 3086 switch (action) { 3087 case QETH_DIAGS_TRAP_ARM: 3088 cmd->data.diagass.options = 0x0003; 3089 cmd->data.diagass.ext = 0x00010000 + 3090 sizeof(struct qeth_trap_id); 3091 qeth_get_trap_id(card, 3092 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3093 break; 3094 case QETH_DIAGS_TRAP_DISARM: 3095 cmd->data.diagass.options = 0x0001; 3096 break; 3097 case QETH_DIAGS_TRAP_CAPTURE: 3098 break; 3099 } 3100 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3101 } 3102 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3103 3104 static int qeth_check_qdio_errors(struct qeth_card *card, 3105 struct qdio_buffer *buf, 3106 unsigned int qdio_error, 3107 const char *dbftext) 3108 { 3109 if (qdio_error) { 3110 QETH_CARD_TEXT(card, 2, dbftext); 3111 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3112 buf->element[15].sflags); 3113 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3114 buf->element[14].sflags); 3115 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3116 if ((buf->element[15].sflags) == 0x12) { 3117 QETH_CARD_STAT_INC(card, rx_fifo_errors); 3118 return 0; 3119 } else 3120 return 1; 3121 } 3122 return 0; 3123 } 3124 3125 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3126 { 3127 struct qeth_qdio_q *queue = card->qdio.in_q; 3128 struct list_head *lh; 3129 int count; 3130 int i; 3131 int rc; 3132 int newcount = 0; 3133 3134 count = (index < queue->next_buf_to_init)? 3135 card->qdio.in_buf_pool.buf_count - 3136 (queue->next_buf_to_init - index) : 3137 card->qdio.in_buf_pool.buf_count - 3138 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3139 /* only requeue at a certain threshold to avoid SIGAs */ 3140 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3141 for (i = queue->next_buf_to_init; 3142 i < queue->next_buf_to_init + count; ++i) { 3143 if (qeth_init_input_buffer(card, 3144 &queue->bufs[QDIO_BUFNR(i)])) { 3145 break; 3146 } else { 3147 newcount++; 3148 } 3149 } 3150 3151 if (newcount < count) { 3152 /* we are in memory shortage so we switch back to 3153 traditional skb allocation and drop packages */ 3154 atomic_set(&card->force_alloc_skb, 3); 3155 count = newcount; 3156 } else { 3157 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3158 } 3159 3160 if (!count) { 3161 i = 0; 3162 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3163 i++; 3164 if (i == card->qdio.in_buf_pool.buf_count) { 3165 QETH_CARD_TEXT(card, 2, "qsarbw"); 3166 card->reclaim_index = index; 3167 schedule_delayed_work( 3168 &card->buffer_reclaim_work, 3169 QETH_RECLAIM_WORK_TIME); 3170 } 3171 return; 3172 } 3173 3174 /* 3175 * according to old code it should be avoided to requeue all 3176 * 128 buffers in order to benefit from PCI avoidance. 3177 * this function keeps at least one buffer (the buffer at 3178 * 'index') un-requeued -> this buffer is the first buffer that 3179 * will be requeued the next time 3180 */ 3181 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3182 queue->next_buf_to_init, count); 3183 if (rc) { 3184 QETH_CARD_TEXT(card, 2, "qinberr"); 3185 } 3186 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init + 3187 count); 3188 } 3189 } 3190 3191 static void qeth_buffer_reclaim_work(struct work_struct *work) 3192 { 3193 struct qeth_card *card = container_of(work, struct qeth_card, 3194 buffer_reclaim_work.work); 3195 3196 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3197 qeth_queue_input_buffer(card, card->reclaim_index); 3198 } 3199 3200 static void qeth_handle_send_error(struct qeth_card *card, 3201 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3202 { 3203 int sbalf15 = buffer->buffer->element[15].sflags; 3204 3205 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3206 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3207 3208 if (!qdio_err) 3209 return; 3210 3211 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3212 return; 3213 3214 QETH_CARD_TEXT(card, 1, "lnkfail"); 3215 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3216 (u16)qdio_err, (u8)sbalf15); 3217 } 3218 3219 /** 3220 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3221 * @queue: queue to check for packing buffer 3222 * 3223 * Returns number of buffers that were prepared for flush. 3224 */ 3225 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3226 { 3227 struct qeth_qdio_out_buffer *buffer; 3228 3229 buffer = queue->bufs[queue->next_buf_to_fill]; 3230 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3231 (buffer->next_element_to_fill > 0)) { 3232 /* it's a packing buffer */ 3233 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3234 queue->next_buf_to_fill = 3235 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3236 return 1; 3237 } 3238 return 0; 3239 } 3240 3241 /* 3242 * Switched to packing state if the number of used buffers on a queue 3243 * reaches a certain limit. 3244 */ 3245 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3246 { 3247 if (!queue->do_pack) { 3248 if (atomic_read(&queue->used_buffers) 3249 >= QETH_HIGH_WATERMARK_PACK){ 3250 /* switch non-PACKING -> PACKING */ 3251 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3252 QETH_TXQ_STAT_INC(queue, packing_mode_switch); 3253 queue->do_pack = 1; 3254 } 3255 } 3256 } 3257 3258 /* 3259 * Switches from packing to non-packing mode. If there is a packing 3260 * buffer on the queue this buffer will be prepared to be flushed. 3261 * In that case 1 is returned to inform the caller. If no buffer 3262 * has to be flushed, zero is returned. 3263 */ 3264 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3265 { 3266 if (queue->do_pack) { 3267 if (atomic_read(&queue->used_buffers) 3268 <= QETH_LOW_WATERMARK_PACK) { 3269 /* switch PACKING -> non-PACKING */ 3270 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3271 QETH_TXQ_STAT_INC(queue, packing_mode_switch); 3272 queue->do_pack = 0; 3273 return qeth_prep_flush_pack_buffer(queue); 3274 } 3275 } 3276 return 0; 3277 } 3278 3279 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3280 int count) 3281 { 3282 struct qeth_card *card = queue->card; 3283 struct qeth_qdio_out_buffer *buf; 3284 int rc; 3285 int i; 3286 unsigned int qdio_flags; 3287 3288 for (i = index; i < index + count; ++i) { 3289 unsigned int bidx = QDIO_BUFNR(i); 3290 3291 buf = queue->bufs[bidx]; 3292 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3293 SBAL_EFLAGS_LAST_ENTRY; 3294 3295 if (queue->bufstates) 3296 queue->bufstates[bidx].user = buf; 3297 3298 if (IS_IQD(queue->card)) 3299 continue; 3300 3301 if (!queue->do_pack) { 3302 if ((atomic_read(&queue->used_buffers) >= 3303 (QETH_HIGH_WATERMARK_PACK - 3304 QETH_WATERMARK_PACK_FUZZ)) && 3305 !atomic_read(&queue->set_pci_flags_count)) { 3306 /* it's likely that we'll go to packing 3307 * mode soon */ 3308 atomic_inc(&queue->set_pci_flags_count); 3309 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3310 } 3311 } else { 3312 if (!atomic_read(&queue->set_pci_flags_count)) { 3313 /* 3314 * there's no outstanding PCI any more, so we 3315 * have to request a PCI to be sure the the PCI 3316 * will wake at some time in the future then we 3317 * can flush packed buffers that might still be 3318 * hanging around, which can happen if no 3319 * further send was requested by the stack 3320 */ 3321 atomic_inc(&queue->set_pci_flags_count); 3322 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3323 } 3324 } 3325 } 3326 3327 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3328 if (atomic_read(&queue->set_pci_flags_count)) 3329 qdio_flags |= QDIO_FLAG_PCI_OUT; 3330 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3331 queue->queue_no, index, count); 3332 3333 /* Fake the TX completion interrupt: */ 3334 if (IS_IQD(card)) 3335 napi_schedule(&queue->napi); 3336 3337 if (rc) { 3338 /* ignore temporary SIGA errors without busy condition */ 3339 if (rc == -ENOBUFS) 3340 return; 3341 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3342 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3343 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3344 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3345 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3346 3347 /* this must not happen under normal circumstances. if it 3348 * happens something is really wrong -> recover */ 3349 qeth_schedule_recovery(queue->card); 3350 return; 3351 } 3352 } 3353 3354 static void qeth_flush_queue(struct qeth_qdio_out_q *queue) 3355 { 3356 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count); 3357 3358 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count); 3359 queue->prev_hdr = NULL; 3360 queue->bulk_count = 0; 3361 } 3362 3363 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3364 { 3365 int index; 3366 int flush_cnt = 0; 3367 int q_was_packing = 0; 3368 3369 /* 3370 * check if weed have to switch to non-packing mode or if 3371 * we have to get a pci flag out on the queue 3372 */ 3373 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3374 !atomic_read(&queue->set_pci_flags_count)) { 3375 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3376 QETH_OUT_Q_UNLOCKED) { 3377 /* 3378 * If we get in here, there was no action in 3379 * do_send_packet. So, we check if there is a 3380 * packing buffer to be flushed here. 3381 */ 3382 index = queue->next_buf_to_fill; 3383 q_was_packing = queue->do_pack; 3384 /* queue->do_pack may change */ 3385 barrier(); 3386 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3387 if (!flush_cnt && 3388 !atomic_read(&queue->set_pci_flags_count)) 3389 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3390 if (q_was_packing) 3391 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt); 3392 if (flush_cnt) 3393 qeth_flush_buffers(queue, index, flush_cnt); 3394 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3395 } 3396 } 3397 } 3398 3399 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3400 unsigned long card_ptr) 3401 { 3402 struct qeth_card *card = (struct qeth_card *)card_ptr; 3403 3404 if (card->dev->flags & IFF_UP) 3405 napi_schedule_irqoff(&card->napi); 3406 } 3407 3408 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3409 { 3410 int rc; 3411 3412 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3413 rc = -1; 3414 goto out; 3415 } else { 3416 if (card->options.cq == cq) { 3417 rc = 0; 3418 goto out; 3419 } 3420 3421 if (card->state != CARD_STATE_DOWN) { 3422 rc = -1; 3423 goto out; 3424 } 3425 3426 qeth_free_qdio_queues(card); 3427 card->options.cq = cq; 3428 rc = 0; 3429 } 3430 out: 3431 return rc; 3432 3433 } 3434 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3435 3436 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err, 3437 unsigned int queue, int first_element, 3438 int count) 3439 { 3440 struct qeth_qdio_q *cq = card->qdio.c_q; 3441 int i; 3442 int rc; 3443 3444 if (!qeth_is_cq(card, queue)) 3445 return; 3446 3447 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3448 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3449 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3450 3451 if (qdio_err) { 3452 netif_tx_stop_all_queues(card->dev); 3453 qeth_schedule_recovery(card); 3454 return; 3455 } 3456 3457 for (i = first_element; i < first_element + count; ++i) { 3458 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)]; 3459 int e = 0; 3460 3461 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3462 buffer->element[e].addr) { 3463 unsigned long phys_aob_addr; 3464 3465 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3466 qeth_qdio_handle_aob(card, phys_aob_addr); 3467 ++e; 3468 } 3469 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER); 3470 } 3471 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3472 card->qdio.c_q->next_buf_to_init, 3473 count); 3474 if (rc) { 3475 dev_warn(&card->gdev->dev, 3476 "QDIO reported an error, rc=%i\n", rc); 3477 QETH_CARD_TEXT(card, 2, "qcqherr"); 3478 } 3479 3480 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count); 3481 } 3482 3483 static void qeth_qdio_input_handler(struct ccw_device *ccwdev, 3484 unsigned int qdio_err, int queue, 3485 int first_elem, int count, 3486 unsigned long card_ptr) 3487 { 3488 struct qeth_card *card = (struct qeth_card *)card_ptr; 3489 3490 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3491 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3492 3493 if (qeth_is_cq(card, queue)) 3494 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3495 else if (qdio_err) 3496 qeth_schedule_recovery(card); 3497 } 3498 3499 static void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3500 unsigned int qdio_error, int __queue, 3501 int first_element, int count, 3502 unsigned long card_ptr) 3503 { 3504 struct qeth_card *card = (struct qeth_card *) card_ptr; 3505 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3506 struct net_device *dev = card->dev; 3507 struct netdev_queue *txq; 3508 int i; 3509 3510 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3511 if (qdio_error & QDIO_ERROR_FATAL) { 3512 QETH_CARD_TEXT(card, 2, "achkcond"); 3513 netif_tx_stop_all_queues(dev); 3514 qeth_schedule_recovery(card); 3515 return; 3516 } 3517 3518 for (i = first_element; i < (first_element + count); ++i) { 3519 struct qeth_qdio_out_buffer *buf = queue->bufs[QDIO_BUFNR(i)]; 3520 3521 qeth_handle_send_error(card, buf, qdio_error); 3522 qeth_clear_output_buffer(queue, buf, qdio_error, 0); 3523 } 3524 3525 atomic_sub(count, &queue->used_buffers); 3526 qeth_check_outbound_queue(queue); 3527 3528 txq = netdev_get_tx_queue(dev, __queue); 3529 /* xmit may have observed the full-condition, but not yet stopped the 3530 * txq. In which case the code below won't trigger. So before returning, 3531 * xmit will re-check the txq's fill level and wake it up if needed. 3532 */ 3533 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue)) 3534 netif_tx_wake_queue(txq); 3535 } 3536 3537 /** 3538 * Note: Function assumes that we have 4 outbound queues. 3539 */ 3540 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb) 3541 { 3542 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 3543 u8 tos; 3544 3545 switch (card->qdio.do_prio_queueing) { 3546 case QETH_PRIO_Q_ING_TOS: 3547 case QETH_PRIO_Q_ING_PREC: 3548 switch (qeth_get_ip_version(skb)) { 3549 case 4: 3550 tos = ipv4_get_dsfield(ip_hdr(skb)); 3551 break; 3552 case 6: 3553 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3554 break; 3555 default: 3556 return card->qdio.default_out_queue; 3557 } 3558 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3559 return ~tos >> 6 & 3; 3560 if (tos & IPTOS_MINCOST) 3561 return 3; 3562 if (tos & IPTOS_RELIABILITY) 3563 return 2; 3564 if (tos & IPTOS_THROUGHPUT) 3565 return 1; 3566 if (tos & IPTOS_LOWDELAY) 3567 return 0; 3568 break; 3569 case QETH_PRIO_Q_ING_SKB: 3570 if (skb->priority > 5) 3571 return 0; 3572 return ~skb->priority >> 1 & 3; 3573 case QETH_PRIO_Q_ING_VLAN: 3574 if (veth->h_vlan_proto == htons(ETH_P_8021Q)) 3575 return ~ntohs(veth->h_vlan_TCI) >> 3576 (VLAN_PRIO_SHIFT + 1) & 3; 3577 break; 3578 default: 3579 break; 3580 } 3581 return card->qdio.default_out_queue; 3582 } 3583 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3584 3585 /** 3586 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3587 * @skb: SKB address 3588 * 3589 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3590 * fragmented part of the SKB. Returns zero for linear SKB. 3591 */ 3592 static int qeth_get_elements_for_frags(struct sk_buff *skb) 3593 { 3594 int cnt, elements = 0; 3595 3596 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3597 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3598 3599 elements += qeth_get_elements_for_range( 3600 (addr_t)skb_frag_address(frag), 3601 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3602 } 3603 return elements; 3604 } 3605 3606 /** 3607 * qeth_count_elements() - Counts the number of QDIO buffer elements needed 3608 * to transmit an skb. 3609 * @skb: the skb to operate on. 3610 * @data_offset: skip this part of the skb's linear data 3611 * 3612 * Returns the number of pages, and thus QDIO buffer elements, needed to map the 3613 * skb's data (both its linear part and paged fragments). 3614 */ 3615 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset) 3616 { 3617 unsigned int elements = qeth_get_elements_for_frags(skb); 3618 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3619 addr_t start = (addr_t)skb->data + data_offset; 3620 3621 if (start != end) 3622 elements += qeth_get_elements_for_range(start, end); 3623 return elements; 3624 } 3625 EXPORT_SYMBOL_GPL(qeth_count_elements); 3626 3627 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \ 3628 MAX_TCP_HEADER) 3629 3630 /** 3631 * qeth_add_hw_header() - add a HW header to an skb. 3632 * @skb: skb that the HW header should be added to. 3633 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3634 * it contains a valid pointer to a qeth_hdr. 3635 * @hdr_len: length of the HW header. 3636 * @proto_len: length of protocol headers that need to be in same page as the 3637 * HW header. 3638 * 3639 * Returns the pushed length. If the header can't be pushed on 3640 * (eg. because it would cross a page boundary), it is allocated from 3641 * the cache instead and 0 is returned. 3642 * The number of needed buffer elements is returned in @elements. 3643 * Error to create the hdr is indicated by returning with < 0. 3644 */ 3645 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue, 3646 struct sk_buff *skb, struct qeth_hdr **hdr, 3647 unsigned int hdr_len, unsigned int proto_len, 3648 unsigned int *elements) 3649 { 3650 const unsigned int contiguous = proto_len ? proto_len : 1; 3651 const unsigned int max_elements = queue->max_elements; 3652 unsigned int __elements; 3653 addr_t start, end; 3654 bool push_ok; 3655 int rc; 3656 3657 check_layout: 3658 start = (addr_t)skb->data - hdr_len; 3659 end = (addr_t)skb->data; 3660 3661 if (qeth_get_elements_for_range(start, end + contiguous) == 1) { 3662 /* Push HW header into same page as first protocol header. */ 3663 push_ok = true; 3664 /* ... but TSO always needs a separate element for headers: */ 3665 if (skb_is_gso(skb)) 3666 __elements = 1 + qeth_count_elements(skb, proto_len); 3667 else 3668 __elements = qeth_count_elements(skb, 0); 3669 } else if (!proto_len && PAGE_ALIGNED(skb->data)) { 3670 /* Push HW header into preceding page, flush with skb->data. */ 3671 push_ok = true; 3672 __elements = 1 + qeth_count_elements(skb, 0); 3673 } else { 3674 /* Use header cache, copy protocol headers up. */ 3675 push_ok = false; 3676 __elements = 1 + qeth_count_elements(skb, proto_len); 3677 } 3678 3679 /* Compress skb to fit into one IO buffer: */ 3680 if (__elements > max_elements) { 3681 if (!skb_is_nonlinear(skb)) { 3682 /* Drop it, no easy way of shrinking it further. */ 3683 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n", 3684 max_elements, __elements, skb->len); 3685 return -E2BIG; 3686 } 3687 3688 rc = skb_linearize(skb); 3689 if (rc) { 3690 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail); 3691 return rc; 3692 } 3693 3694 QETH_TXQ_STAT_INC(queue, skbs_linearized); 3695 /* Linearization changed the layout, re-evaluate: */ 3696 goto check_layout; 3697 } 3698 3699 *elements = __elements; 3700 /* Add the header: */ 3701 if (push_ok) { 3702 *hdr = skb_push(skb, hdr_len); 3703 return hdr_len; 3704 } 3705 /* fall back */ 3706 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE) 3707 return -E2BIG; 3708 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3709 if (!*hdr) 3710 return -ENOMEM; 3711 /* Copy protocol headers behind HW header: */ 3712 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len); 3713 return 0; 3714 } 3715 3716 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue, 3717 struct sk_buff *curr_skb, 3718 struct qeth_hdr *curr_hdr) 3719 { 3720 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start]; 3721 struct qeth_hdr *prev_hdr = queue->prev_hdr; 3722 3723 if (!prev_hdr) 3724 return true; 3725 3726 /* All packets must have the same target: */ 3727 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) { 3728 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list); 3729 3730 return ether_addr_equal(eth_hdr(prev_skb)->h_dest, 3731 eth_hdr(curr_skb)->h_dest) && 3732 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2); 3733 } 3734 3735 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) && 3736 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3); 3737 } 3738 3739 static unsigned int __qeth_fill_buffer(struct sk_buff *skb, 3740 struct qeth_qdio_out_buffer *buf, 3741 bool is_first_elem, unsigned int offset) 3742 { 3743 struct qdio_buffer *buffer = buf->buffer; 3744 int element = buf->next_element_to_fill; 3745 int length = skb_headlen(skb) - offset; 3746 char *data = skb->data + offset; 3747 unsigned int elem_length, cnt; 3748 3749 /* map linear part into buffer element(s) */ 3750 while (length > 0) { 3751 elem_length = min_t(unsigned int, length, 3752 PAGE_SIZE - offset_in_page(data)); 3753 3754 buffer->element[element].addr = data; 3755 buffer->element[element].length = elem_length; 3756 length -= elem_length; 3757 if (is_first_elem) { 3758 is_first_elem = false; 3759 if (length || skb_is_nonlinear(skb)) 3760 /* skb needs additional elements */ 3761 buffer->element[element].eflags = 3762 SBAL_EFLAGS_FIRST_FRAG; 3763 else 3764 buffer->element[element].eflags = 0; 3765 } else { 3766 buffer->element[element].eflags = 3767 SBAL_EFLAGS_MIDDLE_FRAG; 3768 } 3769 3770 data += elem_length; 3771 element++; 3772 } 3773 3774 /* map page frags into buffer element(s) */ 3775 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3776 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3777 3778 data = skb_frag_address(frag); 3779 length = skb_frag_size(frag); 3780 while (length > 0) { 3781 elem_length = min_t(unsigned int, length, 3782 PAGE_SIZE - offset_in_page(data)); 3783 3784 buffer->element[element].addr = data; 3785 buffer->element[element].length = elem_length; 3786 buffer->element[element].eflags = 3787 SBAL_EFLAGS_MIDDLE_FRAG; 3788 3789 length -= elem_length; 3790 data += elem_length; 3791 element++; 3792 } 3793 } 3794 3795 if (buffer->element[element - 1].eflags) 3796 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3797 buf->next_element_to_fill = element; 3798 return element; 3799 } 3800 3801 /** 3802 * qeth_fill_buffer() - map skb into an output buffer 3803 * @buf: buffer to transport the skb 3804 * @skb: skb to map into the buffer 3805 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 3806 * from qeth_core_header_cache. 3807 * @offset: when mapping the skb, start at skb->data + offset 3808 * @hd_len: if > 0, build a dedicated header element of this size 3809 */ 3810 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf, 3811 struct sk_buff *skb, struct qeth_hdr *hdr, 3812 unsigned int offset, unsigned int hd_len) 3813 { 3814 struct qdio_buffer *buffer = buf->buffer; 3815 bool is_first_elem = true; 3816 3817 __skb_queue_tail(&buf->skb_list, skb); 3818 3819 /* build dedicated header element */ 3820 if (hd_len) { 3821 int element = buf->next_element_to_fill; 3822 is_first_elem = false; 3823 3824 buffer->element[element].addr = hdr; 3825 buffer->element[element].length = hd_len; 3826 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3827 /* remember to free cache-allocated qeth_hdr: */ 3828 buf->is_header[element] = ((void *)hdr != skb->data); 3829 buf->next_element_to_fill++; 3830 } 3831 3832 return __qeth_fill_buffer(skb, buf, is_first_elem, offset); 3833 } 3834 3835 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue, 3836 struct sk_buff *skb, unsigned int elements, 3837 struct qeth_hdr *hdr, unsigned int offset, 3838 unsigned int hd_len) 3839 { 3840 unsigned int bytes = qdisc_pkt_len(skb); 3841 struct qeth_qdio_out_buffer *buffer; 3842 unsigned int next_element; 3843 struct netdev_queue *txq; 3844 bool stopped = false; 3845 bool flush; 3846 3847 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)]; 3848 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); 3849 3850 /* Just a sanity check, the wake/stop logic should ensure that we always 3851 * get a free buffer. 3852 */ 3853 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 3854 return -EBUSY; 3855 3856 flush = !qeth_iqd_may_bulk(queue, skb, hdr); 3857 3858 if (flush || 3859 (buffer->next_element_to_fill + elements > queue->max_elements)) { 3860 if (buffer->next_element_to_fill > 0) { 3861 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3862 queue->bulk_count++; 3863 } 3864 3865 if (queue->bulk_count >= queue->bulk_max) 3866 flush = true; 3867 3868 if (flush) 3869 qeth_flush_queue(queue); 3870 3871 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + 3872 queue->bulk_count)]; 3873 3874 /* Sanity-check again: */ 3875 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 3876 return -EBUSY; 3877 } 3878 3879 if (buffer->next_element_to_fill == 0 && 3880 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { 3881 /* If a TX completion happens right _here_ and misses to wake 3882 * the txq, then our re-check below will catch the race. 3883 */ 3884 QETH_TXQ_STAT_INC(queue, stopped); 3885 netif_tx_stop_queue(txq); 3886 stopped = true; 3887 } 3888 3889 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len); 3890 buffer->bytes += bytes; 3891 queue->prev_hdr = hdr; 3892 3893 flush = __netdev_tx_sent_queue(txq, bytes, 3894 !stopped && netdev_xmit_more()); 3895 3896 if (flush || next_element >= queue->max_elements) { 3897 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3898 queue->bulk_count++; 3899 3900 if (queue->bulk_count >= queue->bulk_max) 3901 flush = true; 3902 3903 if (flush) 3904 qeth_flush_queue(queue); 3905 } 3906 3907 if (stopped && !qeth_out_queue_is_full(queue)) 3908 netif_tx_start_queue(txq); 3909 return 0; 3910 } 3911 3912 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 3913 struct sk_buff *skb, struct qeth_hdr *hdr, 3914 unsigned int offset, unsigned int hd_len, 3915 int elements_needed) 3916 { 3917 struct qeth_qdio_out_buffer *buffer; 3918 unsigned int next_element; 3919 struct netdev_queue *txq; 3920 bool stopped = false; 3921 int start_index; 3922 int flush_count = 0; 3923 int do_pack = 0; 3924 int tmp; 3925 int rc = 0; 3926 3927 /* spin until we get the queue ... */ 3928 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 3929 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 3930 start_index = queue->next_buf_to_fill; 3931 buffer = queue->bufs[queue->next_buf_to_fill]; 3932 3933 /* Just a sanity check, the wake/stop logic should ensure that we always 3934 * get a free buffer. 3935 */ 3936 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 3937 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3938 return -EBUSY; 3939 } 3940 3941 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); 3942 3943 /* check if we need to switch packing state of this queue */ 3944 qeth_switch_to_packing_if_needed(queue); 3945 if (queue->do_pack) { 3946 do_pack = 1; 3947 /* does packet fit in current buffer? */ 3948 if (buffer->next_element_to_fill + elements_needed > 3949 queue->max_elements) { 3950 /* ... no -> set state PRIMED */ 3951 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3952 flush_count++; 3953 queue->next_buf_to_fill = 3954 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3955 buffer = queue->bufs[queue->next_buf_to_fill]; 3956 3957 /* We stepped forward, so sanity-check again: */ 3958 if (atomic_read(&buffer->state) != 3959 QETH_QDIO_BUF_EMPTY) { 3960 qeth_flush_buffers(queue, start_index, 3961 flush_count); 3962 atomic_set(&queue->state, 3963 QETH_OUT_Q_UNLOCKED); 3964 rc = -EBUSY; 3965 goto out; 3966 } 3967 } 3968 } 3969 3970 if (buffer->next_element_to_fill == 0 && 3971 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { 3972 /* If a TX completion happens right _here_ and misses to wake 3973 * the txq, then our re-check below will catch the race. 3974 */ 3975 QETH_TXQ_STAT_INC(queue, stopped); 3976 netif_tx_stop_queue(txq); 3977 stopped = true; 3978 } 3979 3980 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len); 3981 3982 if (queue->do_pack) 3983 QETH_TXQ_STAT_INC(queue, skbs_pack); 3984 if (!queue->do_pack || stopped || next_element >= queue->max_elements) { 3985 flush_count++; 3986 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3987 queue->next_buf_to_fill = 3988 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3989 } 3990 3991 if (flush_count) 3992 qeth_flush_buffers(queue, start_index, flush_count); 3993 else if (!atomic_read(&queue->set_pci_flags_count)) 3994 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 3995 /* 3996 * queue->state will go from LOCKED -> UNLOCKED or from 3997 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 3998 * (switch packing state or flush buffer to get another pci flag out). 3999 * In that case we will enter this loop 4000 */ 4001 while (atomic_dec_return(&queue->state)) { 4002 start_index = queue->next_buf_to_fill; 4003 /* check if we can go back to non-packing state */ 4004 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4005 /* 4006 * check if we need to flush a packing buffer to get a pci 4007 * flag out on the queue 4008 */ 4009 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4010 tmp = qeth_prep_flush_pack_buffer(queue); 4011 if (tmp) { 4012 qeth_flush_buffers(queue, start_index, tmp); 4013 flush_count += tmp; 4014 } 4015 } 4016 out: 4017 /* at this point the queue is UNLOCKED again */ 4018 if (do_pack) 4019 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count); 4020 4021 if (stopped && !qeth_out_queue_is_full(queue)) 4022 netif_tx_start_queue(txq); 4023 return rc; 4024 } 4025 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4026 4027 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr, 4028 unsigned int payload_len, struct sk_buff *skb, 4029 unsigned int proto_len) 4030 { 4031 struct qeth_hdr_ext_tso *ext = &hdr->ext; 4032 4033 ext->hdr_tot_len = sizeof(*ext); 4034 ext->imb_hdr_no = 1; 4035 ext->hdr_type = 1; 4036 ext->hdr_version = 1; 4037 ext->hdr_len = 28; 4038 ext->payload_len = payload_len; 4039 ext->mss = skb_shinfo(skb)->gso_size; 4040 ext->dg_hdr_len = proto_len; 4041 } 4042 4043 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 4044 struct qeth_qdio_out_q *queue, int ipv, 4045 void (*fill_header)(struct qeth_qdio_out_q *queue, 4046 struct qeth_hdr *hdr, struct sk_buff *skb, 4047 int ipv, unsigned int data_len)) 4048 { 4049 unsigned int proto_len, hw_hdr_len; 4050 unsigned int frame_len = skb->len; 4051 bool is_tso = skb_is_gso(skb); 4052 unsigned int data_offset = 0; 4053 struct qeth_hdr *hdr = NULL; 4054 unsigned int hd_len = 0; 4055 unsigned int elements; 4056 int push_len, rc; 4057 4058 if (is_tso) { 4059 hw_hdr_len = sizeof(struct qeth_hdr_tso); 4060 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 4061 } else { 4062 hw_hdr_len = sizeof(struct qeth_hdr); 4063 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0; 4064 } 4065 4066 rc = skb_cow_head(skb, hw_hdr_len); 4067 if (rc) 4068 return rc; 4069 4070 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len, 4071 &elements); 4072 if (push_len < 0) 4073 return push_len; 4074 if (is_tso || !push_len) { 4075 /* HW header needs its own buffer element. */ 4076 hd_len = hw_hdr_len + proto_len; 4077 data_offset = push_len + proto_len; 4078 } 4079 memset(hdr, 0, hw_hdr_len); 4080 fill_header(queue, hdr, skb, ipv, frame_len); 4081 if (is_tso) 4082 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr, 4083 frame_len - proto_len, skb, proto_len); 4084 4085 if (IS_IQD(card)) { 4086 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset, 4087 hd_len); 4088 } else { 4089 /* TODO: drop skb_orphan() once TX completion is fast enough */ 4090 skb_orphan(skb); 4091 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset, 4092 hd_len, elements); 4093 } 4094 4095 if (rc && !push_len) 4096 kmem_cache_free(qeth_core_header_cache, hdr); 4097 4098 return rc; 4099 } 4100 EXPORT_SYMBOL_GPL(qeth_xmit); 4101 4102 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4103 struct qeth_reply *reply, unsigned long data) 4104 { 4105 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4106 struct qeth_ipacmd_setadpparms *setparms; 4107 4108 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4109 4110 setparms = &(cmd->data.setadapterparms); 4111 if (qeth_setadpparms_inspect_rc(cmd)) { 4112 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4113 setparms->data.mode = SET_PROMISC_MODE_OFF; 4114 } 4115 card->info.promisc_mode = setparms->data.mode; 4116 return (cmd->hdr.return_code) ? -EIO : 0; 4117 } 4118 4119 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable) 4120 { 4121 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON : 4122 SET_PROMISC_MODE_OFF; 4123 struct qeth_cmd_buffer *iob; 4124 struct qeth_ipa_cmd *cmd; 4125 4126 QETH_CARD_TEXT(card, 4, "setprom"); 4127 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4128 4129 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4130 SETADP_DATA_SIZEOF(mode)); 4131 if (!iob) 4132 return; 4133 cmd = __ipa_cmd(iob); 4134 cmd->data.setadapterparms.data.mode = mode; 4135 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4136 } 4137 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4138 4139 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4140 struct qeth_reply *reply, unsigned long data) 4141 { 4142 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4143 struct qeth_ipacmd_setadpparms *adp_cmd; 4144 4145 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4146 if (qeth_setadpparms_inspect_rc(cmd)) 4147 return -EIO; 4148 4149 adp_cmd = &cmd->data.setadapterparms; 4150 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr)) 4151 return -EADDRNOTAVAIL; 4152 4153 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) && 4154 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC)) 4155 return -EADDRNOTAVAIL; 4156 4157 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr); 4158 return 0; 4159 } 4160 4161 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4162 { 4163 int rc; 4164 struct qeth_cmd_buffer *iob; 4165 struct qeth_ipa_cmd *cmd; 4166 4167 QETH_CARD_TEXT(card, 4, "chgmac"); 4168 4169 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4170 SETADP_DATA_SIZEOF(change_addr)); 4171 if (!iob) 4172 return -ENOMEM; 4173 cmd = __ipa_cmd(iob); 4174 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4175 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4176 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4177 card->dev->dev_addr); 4178 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4179 NULL); 4180 return rc; 4181 } 4182 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4183 4184 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4185 struct qeth_reply *reply, unsigned long data) 4186 { 4187 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4188 struct qeth_set_access_ctrl *access_ctrl_req; 4189 int fallback = *(int *)reply->param; 4190 4191 QETH_CARD_TEXT(card, 4, "setaccb"); 4192 if (cmd->hdr.return_code) 4193 return -EIO; 4194 qeth_setadpparms_inspect_rc(cmd); 4195 4196 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4197 QETH_CARD_TEXT_(card, 2, "rc=%d", 4198 cmd->data.setadapterparms.hdr.return_code); 4199 if (cmd->data.setadapterparms.hdr.return_code != 4200 SET_ACCESS_CTRL_RC_SUCCESS) 4201 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n", 4202 access_ctrl_req->subcmd_code, CARD_DEVID(card), 4203 cmd->data.setadapterparms.hdr.return_code); 4204 switch (cmd->data.setadapterparms.hdr.return_code) { 4205 case SET_ACCESS_CTRL_RC_SUCCESS: 4206 if (card->options.isolation == ISOLATION_MODE_NONE) { 4207 dev_info(&card->gdev->dev, 4208 "QDIO data connection isolation is deactivated\n"); 4209 } else { 4210 dev_info(&card->gdev->dev, 4211 "QDIO data connection isolation is activated\n"); 4212 } 4213 break; 4214 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4215 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n", 4216 CARD_DEVID(card)); 4217 if (fallback) 4218 card->options.isolation = card->options.prev_isolation; 4219 break; 4220 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4221 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n", 4222 CARD_DEVID(card)); 4223 if (fallback) 4224 card->options.isolation = card->options.prev_isolation; 4225 break; 4226 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4227 dev_err(&card->gdev->dev, "Adapter does not " 4228 "support QDIO data connection isolation\n"); 4229 break; 4230 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4231 dev_err(&card->gdev->dev, 4232 "Adapter is dedicated. " 4233 "QDIO data connection isolation not supported\n"); 4234 if (fallback) 4235 card->options.isolation = card->options.prev_isolation; 4236 break; 4237 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4238 dev_err(&card->gdev->dev, 4239 "TSO does not permit QDIO data connection isolation\n"); 4240 if (fallback) 4241 card->options.isolation = card->options.prev_isolation; 4242 break; 4243 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4244 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4245 "support reflective relay mode\n"); 4246 if (fallback) 4247 card->options.isolation = card->options.prev_isolation; 4248 break; 4249 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4250 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4251 "enabled at the adjacent switch port"); 4252 if (fallback) 4253 card->options.isolation = card->options.prev_isolation; 4254 break; 4255 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4256 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4257 "at the adjacent switch failed\n"); 4258 break; 4259 default: 4260 /* this should never happen */ 4261 if (fallback) 4262 card->options.isolation = card->options.prev_isolation; 4263 break; 4264 } 4265 return (cmd->hdr.return_code) ? -EIO : 0; 4266 } 4267 4268 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4269 enum qeth_ipa_isolation_modes isolation, int fallback) 4270 { 4271 int rc; 4272 struct qeth_cmd_buffer *iob; 4273 struct qeth_ipa_cmd *cmd; 4274 struct qeth_set_access_ctrl *access_ctrl_req; 4275 4276 QETH_CARD_TEXT(card, 4, "setacctl"); 4277 4278 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4279 SETADP_DATA_SIZEOF(set_access_ctrl)); 4280 if (!iob) 4281 return -ENOMEM; 4282 cmd = __ipa_cmd(iob); 4283 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4284 access_ctrl_req->subcmd_code = isolation; 4285 4286 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4287 &fallback); 4288 QETH_CARD_TEXT_(card, 2, "rc=%d", rc); 4289 return rc; 4290 } 4291 4292 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4293 { 4294 int rc = 0; 4295 4296 QETH_CARD_TEXT(card, 4, "setactlo"); 4297 4298 if ((IS_OSD(card) || IS_OSX(card)) && 4299 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4300 rc = qeth_setadpparms_set_access_ctrl(card, 4301 card->options.isolation, fallback); 4302 if (rc) { 4303 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n", 4304 rc, CARD_DEVID(card)); 4305 rc = -EOPNOTSUPP; 4306 } 4307 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4308 card->options.isolation = ISOLATION_MODE_NONE; 4309 4310 dev_err(&card->gdev->dev, "Adapter does not " 4311 "support QDIO data connection isolation\n"); 4312 rc = -EOPNOTSUPP; 4313 } 4314 return rc; 4315 } 4316 4317 void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue) 4318 { 4319 struct qeth_card *card; 4320 4321 card = dev->ml_priv; 4322 QETH_CARD_TEXT(card, 4, "txtimeo"); 4323 qeth_schedule_recovery(card); 4324 } 4325 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4326 4327 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4328 { 4329 struct qeth_card *card = dev->ml_priv; 4330 int rc = 0; 4331 4332 switch (regnum) { 4333 case MII_BMCR: /* Basic mode control register */ 4334 rc = BMCR_FULLDPLX; 4335 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4336 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4337 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) && 4338 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH)) 4339 rc |= BMCR_SPEED100; 4340 break; 4341 case MII_BMSR: /* Basic mode status register */ 4342 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4343 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4344 BMSR_100BASE4; 4345 break; 4346 case MII_PHYSID1: /* PHYS ID 1 */ 4347 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4348 dev->dev_addr[2]; 4349 rc = (rc >> 5) & 0xFFFF; 4350 break; 4351 case MII_PHYSID2: /* PHYS ID 2 */ 4352 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4353 break; 4354 case MII_ADVERTISE: /* Advertisement control reg */ 4355 rc = ADVERTISE_ALL; 4356 break; 4357 case MII_LPA: /* Link partner ability reg */ 4358 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4359 LPA_100BASE4 | LPA_LPACK; 4360 break; 4361 case MII_EXPANSION: /* Expansion register */ 4362 break; 4363 case MII_DCOUNTER: /* disconnect counter */ 4364 break; 4365 case MII_FCSCOUNTER: /* false carrier counter */ 4366 break; 4367 case MII_NWAYTEST: /* N-way auto-neg test register */ 4368 break; 4369 case MII_RERRCOUNTER: /* rx error counter */ 4370 rc = card->stats.rx_length_errors + 4371 card->stats.rx_frame_errors + 4372 card->stats.rx_fifo_errors; 4373 break; 4374 case MII_SREVISION: /* silicon revision */ 4375 break; 4376 case MII_RESV1: /* reserved 1 */ 4377 break; 4378 case MII_LBRERROR: /* loopback, rx, bypass error */ 4379 break; 4380 case MII_PHYADDR: /* physical address */ 4381 break; 4382 case MII_RESV2: /* reserved 2 */ 4383 break; 4384 case MII_TPISTATUS: /* TPI status for 10mbps */ 4385 break; 4386 case MII_NCONFIG: /* network interface config */ 4387 break; 4388 default: 4389 break; 4390 } 4391 return rc; 4392 } 4393 4394 static int qeth_snmp_command_cb(struct qeth_card *card, 4395 struct qeth_reply *reply, unsigned long data) 4396 { 4397 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4398 struct qeth_arp_query_info *qinfo = reply->param; 4399 struct qeth_ipacmd_setadpparms *adp_cmd; 4400 unsigned int data_len; 4401 void *snmp_data; 4402 4403 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4404 4405 if (cmd->hdr.return_code) { 4406 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4407 return -EIO; 4408 } 4409 if (cmd->data.setadapterparms.hdr.return_code) { 4410 cmd->hdr.return_code = 4411 cmd->data.setadapterparms.hdr.return_code; 4412 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4413 return -EIO; 4414 } 4415 4416 adp_cmd = &cmd->data.setadapterparms; 4417 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr); 4418 if (adp_cmd->hdr.seq_no == 1) { 4419 snmp_data = &adp_cmd->data.snmp; 4420 } else { 4421 snmp_data = &adp_cmd->data.snmp.request; 4422 data_len -= offsetof(struct qeth_snmp_cmd, request); 4423 } 4424 4425 /* check if there is enough room in userspace */ 4426 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4427 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC); 4428 return -ENOSPC; 4429 } 4430 QETH_CARD_TEXT_(card, 4, "snore%i", 4431 cmd->data.setadapterparms.hdr.used_total); 4432 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4433 cmd->data.setadapterparms.hdr.seq_no); 4434 /*copy entries to user buffer*/ 4435 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len); 4436 qinfo->udata_offset += data_len; 4437 4438 if (cmd->data.setadapterparms.hdr.seq_no < 4439 cmd->data.setadapterparms.hdr.used_total) 4440 return 1; 4441 return 0; 4442 } 4443 4444 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4445 { 4446 struct qeth_snmp_ureq __user *ureq; 4447 struct qeth_cmd_buffer *iob; 4448 unsigned int req_len; 4449 struct qeth_arp_query_info qinfo = {0, }; 4450 int rc = 0; 4451 4452 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4453 4454 if (IS_VM_NIC(card)) 4455 return -EOPNOTSUPP; 4456 4457 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4458 IS_LAYER3(card)) 4459 return -EOPNOTSUPP; 4460 4461 ureq = (struct qeth_snmp_ureq __user *) udata; 4462 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) || 4463 get_user(req_len, &ureq->hdr.req_len)) 4464 return -EFAULT; 4465 4466 /* Sanitize user input, to avoid overflows in iob size calculation: */ 4467 if (req_len > QETH_BUFSIZE) 4468 return -EINVAL; 4469 4470 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len); 4471 if (!iob) 4472 return -ENOMEM; 4473 4474 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp, 4475 &ureq->cmd, req_len)) { 4476 qeth_put_cmd(iob); 4477 return -EFAULT; 4478 } 4479 4480 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4481 if (!qinfo.udata) { 4482 qeth_put_cmd(iob); 4483 return -ENOMEM; 4484 } 4485 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4486 4487 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo); 4488 if (rc) 4489 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n", 4490 CARD_DEVID(card), rc); 4491 else { 4492 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4493 rc = -EFAULT; 4494 } 4495 4496 kfree(qinfo.udata); 4497 return rc; 4498 } 4499 4500 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4501 struct qeth_reply *reply, unsigned long data) 4502 { 4503 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4504 struct qeth_qoat_priv *priv; 4505 char *resdata; 4506 int resdatalen; 4507 4508 QETH_CARD_TEXT(card, 3, "qoatcb"); 4509 if (qeth_setadpparms_inspect_rc(cmd)) 4510 return -EIO; 4511 4512 priv = (struct qeth_qoat_priv *)reply->param; 4513 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4514 resdata = (char *)data + 28; 4515 4516 if (resdatalen > (priv->buffer_len - priv->response_len)) 4517 return -ENOSPC; 4518 4519 memcpy((priv->buffer + priv->response_len), resdata, 4520 resdatalen); 4521 priv->response_len += resdatalen; 4522 4523 if (cmd->data.setadapterparms.hdr.seq_no < 4524 cmd->data.setadapterparms.hdr.used_total) 4525 return 1; 4526 return 0; 4527 } 4528 4529 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4530 { 4531 int rc = 0; 4532 struct qeth_cmd_buffer *iob; 4533 struct qeth_ipa_cmd *cmd; 4534 struct qeth_query_oat *oat_req; 4535 struct qeth_query_oat_data oat_data; 4536 struct qeth_qoat_priv priv; 4537 void __user *tmp; 4538 4539 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4540 4541 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4542 rc = -EOPNOTSUPP; 4543 goto out; 4544 } 4545 4546 if (copy_from_user(&oat_data, udata, 4547 sizeof(struct qeth_query_oat_data))) { 4548 rc = -EFAULT; 4549 goto out; 4550 } 4551 4552 priv.buffer_len = oat_data.buffer_len; 4553 priv.response_len = 0; 4554 priv.buffer = vzalloc(oat_data.buffer_len); 4555 if (!priv.buffer) { 4556 rc = -ENOMEM; 4557 goto out; 4558 } 4559 4560 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4561 SETADP_DATA_SIZEOF(query_oat)); 4562 if (!iob) { 4563 rc = -ENOMEM; 4564 goto out_free; 4565 } 4566 cmd = __ipa_cmd(iob); 4567 oat_req = &cmd->data.setadapterparms.data.query_oat; 4568 oat_req->subcmd_code = oat_data.command; 4569 4570 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4571 &priv); 4572 if (!rc) { 4573 if (is_compat_task()) 4574 tmp = compat_ptr(oat_data.ptr); 4575 else 4576 tmp = (void __user *)(unsigned long)oat_data.ptr; 4577 4578 if (copy_to_user(tmp, priv.buffer, 4579 priv.response_len)) { 4580 rc = -EFAULT; 4581 goto out_free; 4582 } 4583 4584 oat_data.response_len = priv.response_len; 4585 4586 if (copy_to_user(udata, &oat_data, 4587 sizeof(struct qeth_query_oat_data))) 4588 rc = -EFAULT; 4589 } 4590 4591 out_free: 4592 vfree(priv.buffer); 4593 out: 4594 return rc; 4595 } 4596 4597 static int qeth_query_card_info_cb(struct qeth_card *card, 4598 struct qeth_reply *reply, unsigned long data) 4599 { 4600 struct carrier_info *carrier_info = (struct carrier_info *)reply->param; 4601 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4602 struct qeth_query_card_info *card_info; 4603 4604 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4605 if (qeth_setadpparms_inspect_rc(cmd)) 4606 return -EIO; 4607 4608 card_info = &cmd->data.setadapterparms.data.card_info; 4609 carrier_info->card_type = card_info->card_type; 4610 carrier_info->port_mode = card_info->port_mode; 4611 carrier_info->port_speed = card_info->port_speed; 4612 return 0; 4613 } 4614 4615 int qeth_query_card_info(struct qeth_card *card, 4616 struct carrier_info *carrier_info) 4617 { 4618 struct qeth_cmd_buffer *iob; 4619 4620 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4621 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4622 return -EOPNOTSUPP; 4623 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0); 4624 if (!iob) 4625 return -ENOMEM; 4626 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4627 (void *)carrier_info); 4628 } 4629 4630 /** 4631 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4632 * @card: pointer to a qeth_card 4633 * 4634 * Returns 4635 * 0, if a MAC address has been set for the card's netdevice 4636 * a return code, for various error conditions 4637 */ 4638 int qeth_vm_request_mac(struct qeth_card *card) 4639 { 4640 struct diag26c_mac_resp *response; 4641 struct diag26c_mac_req *request; 4642 struct ccw_dev_id id; 4643 int rc; 4644 4645 QETH_CARD_TEXT(card, 2, "vmreqmac"); 4646 4647 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4648 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4649 if (!request || !response) { 4650 rc = -ENOMEM; 4651 goto out; 4652 } 4653 4654 ccw_device_get_id(CARD_DDEV(card), &id); 4655 request->resp_buf_len = sizeof(*response); 4656 request->resp_version = DIAG26C_VERSION2; 4657 request->op_code = DIAG26C_GET_MAC; 4658 request->devno = id.devno; 4659 4660 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4661 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4662 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4663 if (rc) 4664 goto out; 4665 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4666 4667 if (request->resp_buf_len < sizeof(*response) || 4668 response->version != request->resp_version) { 4669 rc = -EIO; 4670 QETH_CARD_TEXT(card, 2, "badresp"); 4671 QETH_CARD_HEX(card, 2, &request->resp_buf_len, 4672 sizeof(request->resp_buf_len)); 4673 } else if (!is_valid_ether_addr(response->mac)) { 4674 rc = -EINVAL; 4675 QETH_CARD_TEXT(card, 2, "badmac"); 4676 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN); 4677 } else { 4678 ether_addr_copy(card->dev->dev_addr, response->mac); 4679 } 4680 4681 out: 4682 kfree(response); 4683 kfree(request); 4684 return rc; 4685 } 4686 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4687 4688 static void qeth_determine_capabilities(struct qeth_card *card) 4689 { 4690 struct qeth_channel *channel = &card->data; 4691 struct ccw_device *ddev = channel->ccwdev; 4692 int rc; 4693 int ddev_offline = 0; 4694 4695 QETH_CARD_TEXT(card, 2, "detcapab"); 4696 if (!ddev->online) { 4697 ddev_offline = 1; 4698 rc = qeth_start_channel(channel); 4699 if (rc) { 4700 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 4701 goto out; 4702 } 4703 } 4704 4705 rc = qeth_read_conf_data(card); 4706 if (rc) { 4707 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n", 4708 CARD_DEVID(card), rc); 4709 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 4710 goto out_offline; 4711 } 4712 4713 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4714 if (rc) 4715 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 4716 4717 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt); 4718 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1); 4719 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2); 4720 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3); 4721 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt); 4722 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4723 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4724 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4725 dev_info(&card->gdev->dev, 4726 "Completion Queueing supported\n"); 4727 } else { 4728 card->options.cq = QETH_CQ_NOTAVAILABLE; 4729 } 4730 4731 4732 out_offline: 4733 if (ddev_offline == 1) 4734 qeth_stop_channel(channel); 4735 out: 4736 return; 4737 } 4738 4739 static void qeth_qdio_establish_cq(struct qeth_card *card, 4740 struct qdio_buffer **in_sbal_ptrs, 4741 void (**queue_start_poll) 4742 (struct ccw_device *, int, 4743 unsigned long)) 4744 { 4745 int i; 4746 4747 if (card->options.cq == QETH_CQ_ENABLED) { 4748 int offset = QDIO_MAX_BUFFERS_PER_Q * 4749 (card->qdio.no_in_queues - 1); 4750 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4751 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4752 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4753 } 4754 4755 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4756 } 4757 } 4758 4759 static int qeth_qdio_establish(struct qeth_card *card) 4760 { 4761 struct qdio_initialize init_data; 4762 char *qib_param_field; 4763 struct qdio_buffer **in_sbal_ptrs; 4764 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4765 struct qdio_buffer **out_sbal_ptrs; 4766 int i, j, k; 4767 int rc = 0; 4768 4769 QETH_CARD_TEXT(card, 2, "qdioest"); 4770 4771 qib_param_field = kzalloc(FIELD_SIZEOF(struct qib, parm), GFP_KERNEL); 4772 if (!qib_param_field) { 4773 rc = -ENOMEM; 4774 goto out_free_nothing; 4775 } 4776 4777 qeth_create_qib_param_field(card, qib_param_field); 4778 qeth_create_qib_param_field_blkt(card, qib_param_field); 4779 4780 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q, 4781 sizeof(void *), 4782 GFP_KERNEL); 4783 if (!in_sbal_ptrs) { 4784 rc = -ENOMEM; 4785 goto out_free_qib_param; 4786 } 4787 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4788 in_sbal_ptrs[i] = (struct qdio_buffer *) 4789 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4790 } 4791 4792 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), 4793 GFP_KERNEL); 4794 if (!queue_start_poll) { 4795 rc = -ENOMEM; 4796 goto out_free_in_sbals; 4797 } 4798 for (i = 0; i < card->qdio.no_in_queues; ++i) 4799 queue_start_poll[i] = qeth_qdio_start_poll; 4800 4801 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4802 4803 out_sbal_ptrs = 4804 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q, 4805 sizeof(void *), 4806 GFP_KERNEL); 4807 if (!out_sbal_ptrs) { 4808 rc = -ENOMEM; 4809 goto out_free_queue_start_poll; 4810 } 4811 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4812 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4813 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4814 card->qdio.out_qs[i]->bufs[j]->buffer); 4815 } 4816 4817 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4818 init_data.cdev = CARD_DDEV(card); 4819 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT : 4820 QDIO_QETH_QFMT; 4821 init_data.qib_param_field_format = 0; 4822 init_data.qib_param_field = qib_param_field; 4823 init_data.no_input_qs = card->qdio.no_in_queues; 4824 init_data.no_output_qs = card->qdio.no_out_queues; 4825 init_data.input_handler = qeth_qdio_input_handler; 4826 init_data.output_handler = qeth_qdio_output_handler; 4827 init_data.queue_start_poll_array = queue_start_poll; 4828 init_data.int_parm = (unsigned long) card; 4829 init_data.input_sbal_addr_array = in_sbal_ptrs; 4830 init_data.output_sbal_addr_array = out_sbal_ptrs; 4831 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4832 init_data.scan_threshold = IS_IQD(card) ? 0 : 32; 4833 4834 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4835 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4836 rc = qdio_allocate(&init_data); 4837 if (rc) { 4838 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4839 goto out; 4840 } 4841 rc = qdio_establish(&init_data); 4842 if (rc) { 4843 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4844 qdio_free(CARD_DDEV(card)); 4845 } 4846 } 4847 4848 switch (card->options.cq) { 4849 case QETH_CQ_ENABLED: 4850 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4851 break; 4852 case QETH_CQ_DISABLED: 4853 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4854 break; 4855 default: 4856 break; 4857 } 4858 out: 4859 kfree(out_sbal_ptrs); 4860 out_free_queue_start_poll: 4861 kfree(queue_start_poll); 4862 out_free_in_sbals: 4863 kfree(in_sbal_ptrs); 4864 out_free_qib_param: 4865 kfree(qib_param_field); 4866 out_free_nothing: 4867 return rc; 4868 } 4869 4870 static void qeth_core_free_card(struct qeth_card *card) 4871 { 4872 QETH_CARD_TEXT(card, 2, "freecrd"); 4873 qeth_put_cmd(card->read_cmd); 4874 destroy_workqueue(card->event_wq); 4875 unregister_service_level(&card->qeth_service_level); 4876 dev_set_drvdata(&card->gdev->dev, NULL); 4877 kfree(card); 4878 } 4879 4880 void qeth_trace_features(struct qeth_card *card) 4881 { 4882 QETH_CARD_TEXT(card, 2, "features"); 4883 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 4884 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 4885 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 4886 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 4887 sizeof(card->info.diagass_support)); 4888 } 4889 EXPORT_SYMBOL_GPL(qeth_trace_features); 4890 4891 static struct ccw_device_id qeth_ids[] = { 4892 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 4893 .driver_info = QETH_CARD_TYPE_OSD}, 4894 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 4895 .driver_info = QETH_CARD_TYPE_IQD}, 4896 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 4897 .driver_info = QETH_CARD_TYPE_OSN}, 4898 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 4899 .driver_info = QETH_CARD_TYPE_OSM}, 4900 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 4901 .driver_info = QETH_CARD_TYPE_OSX}, 4902 {}, 4903 }; 4904 MODULE_DEVICE_TABLE(ccw, qeth_ids); 4905 4906 static struct ccw_driver qeth_ccw_driver = { 4907 .driver = { 4908 .owner = THIS_MODULE, 4909 .name = "qeth", 4910 }, 4911 .ids = qeth_ids, 4912 .probe = ccwgroup_probe_ccwdev, 4913 .remove = ccwgroup_remove_ccwdev, 4914 }; 4915 4916 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok) 4917 { 4918 int retries = 3; 4919 int rc; 4920 4921 QETH_CARD_TEXT(card, 2, "hrdsetup"); 4922 atomic_set(&card->force_alloc_skb, 0); 4923 rc = qeth_update_from_chp_desc(card); 4924 if (rc) 4925 return rc; 4926 retry: 4927 if (retries < 3) 4928 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n", 4929 CARD_DEVID(card)); 4930 rc = qeth_qdio_clear_card(card, !IS_IQD(card)); 4931 qeth_stop_channel(&card->data); 4932 qeth_stop_channel(&card->write); 4933 qeth_stop_channel(&card->read); 4934 qdio_free(CARD_DDEV(card)); 4935 4936 rc = qeth_start_channel(&card->read); 4937 if (rc) 4938 goto retriable; 4939 rc = qeth_start_channel(&card->write); 4940 if (rc) 4941 goto retriable; 4942 rc = qeth_start_channel(&card->data); 4943 if (rc) 4944 goto retriable; 4945 retriable: 4946 if (rc == -ERESTARTSYS) { 4947 QETH_CARD_TEXT(card, 2, "break1"); 4948 return rc; 4949 } else if (rc) { 4950 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 4951 if (--retries < 0) 4952 goto out; 4953 else 4954 goto retry; 4955 } 4956 qeth_determine_capabilities(card); 4957 qeth_init_tokens(card); 4958 qeth_init_func_level(card); 4959 4960 rc = qeth_idx_activate_read_channel(card); 4961 if (rc == -EINTR) { 4962 QETH_CARD_TEXT(card, 2, "break2"); 4963 return rc; 4964 } else if (rc) { 4965 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 4966 if (--retries < 0) 4967 goto out; 4968 else 4969 goto retry; 4970 } 4971 4972 rc = qeth_idx_activate_write_channel(card); 4973 if (rc == -EINTR) { 4974 QETH_CARD_TEXT(card, 2, "break3"); 4975 return rc; 4976 } else if (rc) { 4977 QETH_CARD_TEXT_(card, 2, "4err%d", rc); 4978 if (--retries < 0) 4979 goto out; 4980 else 4981 goto retry; 4982 } 4983 card->read_or_write_problem = 0; 4984 rc = qeth_mpc_initialize(card); 4985 if (rc) { 4986 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 4987 goto out; 4988 } 4989 4990 rc = qeth_send_startlan(card); 4991 if (rc) { 4992 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 4993 if (rc == -ENETDOWN) { 4994 dev_warn(&card->gdev->dev, "The LAN is offline\n"); 4995 *carrier_ok = false; 4996 } else { 4997 goto out; 4998 } 4999 } else { 5000 *carrier_ok = true; 5001 } 5002 5003 card->options.ipa4.supported = 0; 5004 card->options.ipa6.supported = 0; 5005 card->options.adp.supported = 0; 5006 card->options.sbp.supported_funcs = 0; 5007 card->info.diagass_support = 0; 5008 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5009 if (rc == -ENOMEM) 5010 goto out; 5011 if (qeth_is_supported(card, IPA_IPV6)) { 5012 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 5013 if (rc == -ENOMEM) 5014 goto out; 5015 } 5016 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5017 rc = qeth_query_setadapterparms(card); 5018 if (rc < 0) { 5019 QETH_CARD_TEXT_(card, 2, "7err%d", rc); 5020 goto out; 5021 } 5022 } 5023 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5024 rc = qeth_query_setdiagass(card); 5025 if (rc < 0) { 5026 QETH_CARD_TEXT_(card, 2, "8err%d", rc); 5027 goto out; 5028 } 5029 } 5030 5031 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) || 5032 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))) 5033 card->info.hwtrap = 0; 5034 5035 rc = qeth_set_access_ctrl_online(card, 0); 5036 if (rc) 5037 goto out; 5038 5039 return 0; 5040 out: 5041 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5042 "an error on the device\n"); 5043 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n", 5044 CARD_DEVID(card), rc); 5045 return rc; 5046 } 5047 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5048 5049 static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len) 5050 { 5051 struct page *page = virt_to_page(data); 5052 unsigned int next_frag; 5053 5054 next_frag = skb_shinfo(skb)->nr_frags; 5055 get_page(page); 5056 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len, 5057 data_len); 5058 } 5059 5060 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5061 { 5062 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5063 } 5064 5065 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5066 struct qeth_qdio_buffer *qethbuffer, 5067 struct qdio_buffer_element **__element, int *__offset, 5068 struct qeth_hdr **hdr) 5069 { 5070 struct qdio_buffer_element *element = *__element; 5071 struct qdio_buffer *buffer = qethbuffer->buffer; 5072 unsigned int linear_len = 0; 5073 int offset = *__offset; 5074 bool use_rx_sg = false; 5075 unsigned int headroom; 5076 struct sk_buff *skb; 5077 int skb_len = 0; 5078 5079 next_packet: 5080 /* qeth_hdr must not cross element boundaries */ 5081 while (element->length < offset + sizeof(struct qeth_hdr)) { 5082 if (qeth_is_last_sbale(element)) 5083 return NULL; 5084 element++; 5085 offset = 0; 5086 } 5087 *hdr = element->addr + offset; 5088 5089 offset += sizeof(struct qeth_hdr); 5090 skb = NULL; 5091 5092 switch ((*hdr)->hdr.l2.id) { 5093 case QETH_HEADER_TYPE_LAYER2: 5094 skb_len = (*hdr)->hdr.l2.pkt_length; 5095 linear_len = ETH_HLEN; 5096 headroom = 0; 5097 break; 5098 case QETH_HEADER_TYPE_LAYER3: 5099 skb_len = (*hdr)->hdr.l3.length; 5100 if (!IS_LAYER3(card)) { 5101 QETH_CARD_STAT_INC(card, rx_dropped_notsupp); 5102 goto walk_packet; 5103 } 5104 5105 if ((*hdr)->hdr.l3.flags & QETH_HDR_PASSTHRU) { 5106 linear_len = ETH_HLEN; 5107 headroom = 0; 5108 break; 5109 } 5110 5111 if ((*hdr)->hdr.l3.flags & QETH_HDR_IPV6) 5112 linear_len = sizeof(struct ipv6hdr); 5113 else 5114 linear_len = sizeof(struct iphdr); 5115 headroom = ETH_HLEN; 5116 break; 5117 case QETH_HEADER_TYPE_OSN: 5118 skb_len = (*hdr)->hdr.osn.pdu_length; 5119 if (!IS_OSN(card)) { 5120 QETH_CARD_STAT_INC(card, rx_dropped_notsupp); 5121 goto walk_packet; 5122 } 5123 5124 linear_len = skb_len; 5125 headroom = sizeof(struct qeth_hdr); 5126 break; 5127 default: 5128 if ((*hdr)->hdr.l2.id & QETH_HEADER_MASK_INVAL) 5129 QETH_CARD_STAT_INC(card, rx_frame_errors); 5130 else 5131 QETH_CARD_STAT_INC(card, rx_dropped_notsupp); 5132 5133 /* Can't determine packet length, drop the whole buffer. */ 5134 return NULL; 5135 } 5136 5137 if (skb_len < linear_len) { 5138 QETH_CARD_STAT_INC(card, rx_dropped_runt); 5139 goto walk_packet; 5140 } 5141 5142 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) || 5143 ((skb_len >= card->options.rx_sg_cb) && 5144 !atomic_read(&card->force_alloc_skb) && 5145 !IS_OSN(card)); 5146 5147 if (use_rx_sg && qethbuffer->rx_skb) { 5148 /* QETH_CQ_ENABLED only: */ 5149 skb = qethbuffer->rx_skb; 5150 qethbuffer->rx_skb = NULL; 5151 } else { 5152 if (!use_rx_sg) 5153 linear_len = skb_len; 5154 skb = napi_alloc_skb(&card->napi, linear_len + headroom); 5155 } 5156 5157 if (!skb) 5158 QETH_CARD_STAT_INC(card, rx_dropped_nomem); 5159 else if (headroom) 5160 skb_reserve(skb, headroom); 5161 5162 walk_packet: 5163 while (skb_len) { 5164 int data_len = min(skb_len, (int)(element->length - offset)); 5165 char *data = element->addr + offset; 5166 5167 skb_len -= data_len; 5168 offset += data_len; 5169 5170 /* Extract data from current element: */ 5171 if (skb && data_len) { 5172 if (linear_len) { 5173 unsigned int copy_len; 5174 5175 copy_len = min_t(unsigned int, linear_len, 5176 data_len); 5177 5178 skb_put_data(skb, data, copy_len); 5179 linear_len -= copy_len; 5180 data_len -= copy_len; 5181 data += copy_len; 5182 } 5183 5184 if (data_len) 5185 qeth_create_skb_frag(skb, data, data_len); 5186 } 5187 5188 /* Step forward to next element: */ 5189 if (skb_len) { 5190 if (qeth_is_last_sbale(element)) { 5191 QETH_CARD_TEXT(card, 4, "unexeob"); 5192 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5193 if (skb) { 5194 dev_kfree_skb_any(skb); 5195 QETH_CARD_STAT_INC(card, 5196 rx_length_errors); 5197 } 5198 return NULL; 5199 } 5200 element++; 5201 offset = 0; 5202 } 5203 } 5204 5205 /* This packet was skipped, go get another one: */ 5206 if (!skb) 5207 goto next_packet; 5208 5209 *__element = element; 5210 *__offset = offset; 5211 if (use_rx_sg) { 5212 QETH_CARD_STAT_INC(card, rx_sg_skbs); 5213 QETH_CARD_STAT_ADD(card, rx_sg_frags, 5214 skb_shinfo(skb)->nr_frags); 5215 } 5216 return skb; 5217 } 5218 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5219 5220 int qeth_poll(struct napi_struct *napi, int budget) 5221 { 5222 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5223 int work_done = 0; 5224 struct qeth_qdio_buffer *buffer; 5225 int done; 5226 int new_budget = budget; 5227 5228 while (1) { 5229 if (!card->rx.b_count) { 5230 card->rx.qdio_err = 0; 5231 card->rx.b_count = qdio_get_next_buffers( 5232 card->data.ccwdev, 0, &card->rx.b_index, 5233 &card->rx.qdio_err); 5234 if (card->rx.b_count <= 0) { 5235 card->rx.b_count = 0; 5236 break; 5237 } 5238 card->rx.b_element = 5239 &card->qdio.in_q->bufs[card->rx.b_index] 5240 .buffer->element[0]; 5241 card->rx.e_offset = 0; 5242 } 5243 5244 while (card->rx.b_count) { 5245 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5246 if (!(card->rx.qdio_err && 5247 qeth_check_qdio_errors(card, buffer->buffer, 5248 card->rx.qdio_err, "qinerr"))) 5249 work_done += 5250 card->discipline->process_rx_buffer( 5251 card, new_budget, &done); 5252 else 5253 done = 1; 5254 5255 if (done) { 5256 QETH_CARD_STAT_INC(card, rx_bufs); 5257 qeth_put_buffer_pool_entry(card, 5258 buffer->pool_entry); 5259 qeth_queue_input_buffer(card, card->rx.b_index); 5260 card->rx.b_count--; 5261 if (card->rx.b_count) { 5262 card->rx.b_index = 5263 QDIO_BUFNR(card->rx.b_index + 1); 5264 card->rx.b_element = 5265 &card->qdio.in_q 5266 ->bufs[card->rx.b_index] 5267 .buffer->element[0]; 5268 card->rx.e_offset = 0; 5269 } 5270 } 5271 5272 if (work_done >= budget) 5273 goto out; 5274 else 5275 new_budget = budget - work_done; 5276 } 5277 } 5278 5279 if (napi_complete_done(napi, work_done) && 5280 qdio_start_irq(CARD_DDEV(card), 0)) 5281 napi_schedule(napi); 5282 out: 5283 return work_done; 5284 } 5285 EXPORT_SYMBOL_GPL(qeth_poll); 5286 5287 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue, 5288 unsigned int bidx, bool error, int budget) 5289 { 5290 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx]; 5291 u8 sflags = buffer->buffer->element[15].sflags; 5292 struct qeth_card *card = queue->card; 5293 5294 if (queue->bufstates && (queue->bufstates[bidx].flags & 5295 QDIO_OUTBUF_STATE_FLAG_PENDING)) { 5296 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 5297 5298 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 5299 QETH_QDIO_BUF_PENDING) == 5300 QETH_QDIO_BUF_PRIMED) 5301 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING); 5302 5303 QETH_CARD_TEXT_(card, 5, "pel%u", bidx); 5304 5305 /* prepare the queue slot for re-use: */ 5306 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements); 5307 if (qeth_init_qdio_out_buf(queue, bidx)) { 5308 QETH_CARD_TEXT(card, 2, "outofbuf"); 5309 qeth_schedule_recovery(card); 5310 } 5311 5312 return; 5313 } 5314 5315 if (card->options.cq == QETH_CQ_ENABLED) 5316 qeth_notify_skbs(queue, buffer, 5317 qeth_compute_cq_notification(sflags, 0)); 5318 qeth_clear_output_buffer(queue, buffer, error, budget); 5319 } 5320 5321 static int qeth_tx_poll(struct napi_struct *napi, int budget) 5322 { 5323 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi); 5324 unsigned int queue_no = queue->queue_no; 5325 struct qeth_card *card = queue->card; 5326 struct net_device *dev = card->dev; 5327 unsigned int work_done = 0; 5328 struct netdev_queue *txq; 5329 5330 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no)); 5331 5332 while (1) { 5333 unsigned int start, error, i; 5334 unsigned int packets = 0; 5335 unsigned int bytes = 0; 5336 int completed; 5337 5338 if (qeth_out_queue_is_empty(queue)) { 5339 napi_complete(napi); 5340 return 0; 5341 } 5342 5343 /* Give the CPU a breather: */ 5344 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) { 5345 QETH_TXQ_STAT_INC(queue, completion_yield); 5346 if (napi_complete_done(napi, 0)) 5347 napi_schedule(napi); 5348 return 0; 5349 } 5350 5351 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false, 5352 &start, &error); 5353 if (completed <= 0) { 5354 /* Ensure we see TX completion for pending work: */ 5355 if (napi_complete_done(napi, 0)) 5356 qeth_tx_arm_timer(queue); 5357 return 0; 5358 } 5359 5360 for (i = start; i < start + completed; i++) { 5361 struct qeth_qdio_out_buffer *buffer; 5362 unsigned int bidx = QDIO_BUFNR(i); 5363 5364 buffer = queue->bufs[bidx]; 5365 packets += skb_queue_len(&buffer->skb_list); 5366 bytes += buffer->bytes; 5367 5368 qeth_handle_send_error(card, buffer, error); 5369 qeth_iqd_tx_complete(queue, bidx, error, budget); 5370 qeth_cleanup_handled_pending(queue, bidx, false); 5371 } 5372 5373 netdev_tx_completed_queue(txq, packets, bytes); 5374 atomic_sub(completed, &queue->used_buffers); 5375 work_done += completed; 5376 5377 /* xmit may have observed the full-condition, but not yet 5378 * stopped the txq. In which case the code below won't trigger. 5379 * So before returning, xmit will re-check the txq's fill level 5380 * and wake it up if needed. 5381 */ 5382 if (netif_tx_queue_stopped(txq) && 5383 !qeth_out_queue_is_full(queue)) 5384 netif_tx_wake_queue(txq); 5385 } 5386 } 5387 5388 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5389 { 5390 if (!cmd->hdr.return_code) 5391 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5392 return cmd->hdr.return_code; 5393 } 5394 5395 static int qeth_setassparms_get_caps_cb(struct qeth_card *card, 5396 struct qeth_reply *reply, 5397 unsigned long data) 5398 { 5399 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5400 struct qeth_ipa_caps *caps = reply->param; 5401 5402 if (qeth_setassparms_inspect_rc(cmd)) 5403 return -EIO; 5404 5405 caps->supported = cmd->data.setassparms.data.caps.supported; 5406 caps->enabled = cmd->data.setassparms.data.caps.enabled; 5407 return 0; 5408 } 5409 5410 int qeth_setassparms_cb(struct qeth_card *card, 5411 struct qeth_reply *reply, unsigned long data) 5412 { 5413 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5414 5415 QETH_CARD_TEXT(card, 4, "defadpcb"); 5416 5417 if (cmd->hdr.return_code) 5418 return -EIO; 5419 5420 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5421 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5422 card->options.ipa4.enabled = cmd->hdr.assists.enabled; 5423 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5424 card->options.ipa6.enabled = cmd->hdr.assists.enabled; 5425 return 0; 5426 } 5427 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5428 5429 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5430 enum qeth_ipa_funcs ipa_func, 5431 u16 cmd_code, 5432 unsigned int data_length, 5433 enum qeth_prot_versions prot) 5434 { 5435 struct qeth_ipacmd_setassparms *setassparms; 5436 struct qeth_ipacmd_setassparms_hdr *hdr; 5437 struct qeth_cmd_buffer *iob; 5438 5439 QETH_CARD_TEXT(card, 4, "getasscm"); 5440 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot, 5441 data_length + 5442 offsetof(struct qeth_ipacmd_setassparms, 5443 data)); 5444 if (!iob) 5445 return NULL; 5446 5447 setassparms = &__ipa_cmd(iob)->data.setassparms; 5448 setassparms->assist_no = ipa_func; 5449 5450 hdr = &setassparms->hdr; 5451 hdr->length = sizeof(*hdr) + data_length; 5452 hdr->command_code = cmd_code; 5453 return iob; 5454 } 5455 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5456 5457 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 5458 enum qeth_ipa_funcs ipa_func, 5459 u16 cmd_code, u32 *data, 5460 enum qeth_prot_versions prot) 5461 { 5462 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0; 5463 struct qeth_cmd_buffer *iob; 5464 5465 QETH_CARD_TEXT_(card, 4, "simassp%i", prot); 5466 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); 5467 if (!iob) 5468 return -ENOMEM; 5469 5470 if (data) 5471 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data; 5472 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL); 5473 } 5474 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 5475 5476 static void qeth_unregister_dbf_views(void) 5477 { 5478 int x; 5479 for (x = 0; x < QETH_DBF_INFOS; x++) { 5480 debug_unregister(qeth_dbf[x].id); 5481 qeth_dbf[x].id = NULL; 5482 } 5483 } 5484 5485 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5486 { 5487 char dbf_txt_buf[32]; 5488 va_list args; 5489 5490 if (!debug_level_enabled(id, level)) 5491 return; 5492 va_start(args, fmt); 5493 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5494 va_end(args); 5495 debug_text_event(id, level, dbf_txt_buf); 5496 } 5497 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5498 5499 static int qeth_register_dbf_views(void) 5500 { 5501 int ret; 5502 int x; 5503 5504 for (x = 0; x < QETH_DBF_INFOS; x++) { 5505 /* register the areas */ 5506 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5507 qeth_dbf[x].pages, 5508 qeth_dbf[x].areas, 5509 qeth_dbf[x].len); 5510 if (qeth_dbf[x].id == NULL) { 5511 qeth_unregister_dbf_views(); 5512 return -ENOMEM; 5513 } 5514 5515 /* register a view */ 5516 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5517 if (ret) { 5518 qeth_unregister_dbf_views(); 5519 return ret; 5520 } 5521 5522 /* set a passing level */ 5523 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5524 } 5525 5526 return 0; 5527 } 5528 5529 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */ 5530 5531 int qeth_core_load_discipline(struct qeth_card *card, 5532 enum qeth_discipline_id discipline) 5533 { 5534 mutex_lock(&qeth_mod_mutex); 5535 switch (discipline) { 5536 case QETH_DISCIPLINE_LAYER3: 5537 card->discipline = try_then_request_module( 5538 symbol_get(qeth_l3_discipline), "qeth_l3"); 5539 break; 5540 case QETH_DISCIPLINE_LAYER2: 5541 card->discipline = try_then_request_module( 5542 symbol_get(qeth_l2_discipline), "qeth_l2"); 5543 break; 5544 default: 5545 break; 5546 } 5547 mutex_unlock(&qeth_mod_mutex); 5548 5549 if (!card->discipline) { 5550 dev_err(&card->gdev->dev, "There is no kernel module to " 5551 "support discipline %d\n", discipline); 5552 return -EINVAL; 5553 } 5554 5555 card->options.layer = discipline; 5556 return 0; 5557 } 5558 5559 void qeth_core_free_discipline(struct qeth_card *card) 5560 { 5561 if (IS_LAYER2(card)) 5562 symbol_put(qeth_l2_discipline); 5563 else 5564 symbol_put(qeth_l3_discipline); 5565 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 5566 card->discipline = NULL; 5567 } 5568 5569 const struct device_type qeth_generic_devtype = { 5570 .name = "qeth_generic", 5571 .groups = qeth_generic_attr_groups, 5572 }; 5573 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5574 5575 static const struct device_type qeth_osn_devtype = { 5576 .name = "qeth_osn", 5577 .groups = qeth_osn_attr_groups, 5578 }; 5579 5580 #define DBF_NAME_LEN 20 5581 5582 struct qeth_dbf_entry { 5583 char dbf_name[DBF_NAME_LEN]; 5584 debug_info_t *dbf_info; 5585 struct list_head dbf_list; 5586 }; 5587 5588 static LIST_HEAD(qeth_dbf_list); 5589 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5590 5591 static debug_info_t *qeth_get_dbf_entry(char *name) 5592 { 5593 struct qeth_dbf_entry *entry; 5594 debug_info_t *rc = NULL; 5595 5596 mutex_lock(&qeth_dbf_list_mutex); 5597 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5598 if (strcmp(entry->dbf_name, name) == 0) { 5599 rc = entry->dbf_info; 5600 break; 5601 } 5602 } 5603 mutex_unlock(&qeth_dbf_list_mutex); 5604 return rc; 5605 } 5606 5607 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5608 { 5609 struct qeth_dbf_entry *new_entry; 5610 5611 card->debug = debug_register(name, 2, 1, 8); 5612 if (!card->debug) { 5613 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5614 goto err; 5615 } 5616 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5617 goto err_dbg; 5618 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5619 if (!new_entry) 5620 goto err_dbg; 5621 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5622 new_entry->dbf_info = card->debug; 5623 mutex_lock(&qeth_dbf_list_mutex); 5624 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5625 mutex_unlock(&qeth_dbf_list_mutex); 5626 5627 return 0; 5628 5629 err_dbg: 5630 debug_unregister(card->debug); 5631 err: 5632 return -ENOMEM; 5633 } 5634 5635 static void qeth_clear_dbf_list(void) 5636 { 5637 struct qeth_dbf_entry *entry, *tmp; 5638 5639 mutex_lock(&qeth_dbf_list_mutex); 5640 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5641 list_del(&entry->dbf_list); 5642 debug_unregister(entry->dbf_info); 5643 kfree(entry); 5644 } 5645 mutex_unlock(&qeth_dbf_list_mutex); 5646 } 5647 5648 static struct net_device *qeth_alloc_netdev(struct qeth_card *card) 5649 { 5650 struct net_device *dev; 5651 5652 switch (card->info.type) { 5653 case QETH_CARD_TYPE_IQD: 5654 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN, 5655 ether_setup, QETH_MAX_QUEUES, 1); 5656 break; 5657 case QETH_CARD_TYPE_OSM: 5658 dev = alloc_etherdev(0); 5659 break; 5660 case QETH_CARD_TYPE_OSN: 5661 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); 5662 break; 5663 default: 5664 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1); 5665 } 5666 5667 if (!dev) 5668 return NULL; 5669 5670 dev->ml_priv = card; 5671 dev->watchdog_timeo = QETH_TX_TIMEOUT; 5672 dev->min_mtu = IS_OSN(card) ? 64 : 576; 5673 /* initialized when device first goes online: */ 5674 dev->max_mtu = 0; 5675 dev->mtu = 0; 5676 SET_NETDEV_DEV(dev, &card->gdev->dev); 5677 netif_carrier_off(dev); 5678 5679 if (IS_OSN(card)) { 5680 dev->ethtool_ops = &qeth_osn_ethtool_ops; 5681 } else { 5682 dev->ethtool_ops = &qeth_ethtool_ops; 5683 dev->priv_flags &= ~IFF_TX_SKB_SHARING; 5684 dev->hw_features |= NETIF_F_SG; 5685 dev->vlan_features |= NETIF_F_SG; 5686 if (IS_IQD(card)) { 5687 dev->features |= NETIF_F_SG; 5688 if (netif_set_real_num_tx_queues(dev, 5689 QETH_IQD_MIN_TXQ)) { 5690 free_netdev(dev); 5691 return NULL; 5692 } 5693 } 5694 } 5695 5696 return dev; 5697 } 5698 5699 struct net_device *qeth_clone_netdev(struct net_device *orig) 5700 { 5701 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv); 5702 5703 if (!clone) 5704 return NULL; 5705 5706 clone->dev_port = orig->dev_port; 5707 return clone; 5708 } 5709 5710 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5711 { 5712 struct qeth_card *card; 5713 struct device *dev; 5714 int rc; 5715 enum qeth_discipline_id enforced_disc; 5716 char dbf_name[DBF_NAME_LEN]; 5717 5718 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5719 5720 dev = &gdev->dev; 5721 if (!get_device(dev)) 5722 return -ENODEV; 5723 5724 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5725 5726 card = qeth_alloc_card(gdev); 5727 if (!card) { 5728 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5729 rc = -ENOMEM; 5730 goto err_dev; 5731 } 5732 5733 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5734 dev_name(&gdev->dev)); 5735 card->debug = qeth_get_dbf_entry(dbf_name); 5736 if (!card->debug) { 5737 rc = qeth_add_dbf_entry(card, dbf_name); 5738 if (rc) 5739 goto err_card; 5740 } 5741 5742 qeth_setup_card(card); 5743 card->dev = qeth_alloc_netdev(card); 5744 if (!card->dev) { 5745 rc = -ENOMEM; 5746 goto err_card; 5747 } 5748 5749 card->qdio.no_out_queues = card->dev->num_tx_queues; 5750 rc = qeth_update_from_chp_desc(card); 5751 if (rc) 5752 goto err_chp_desc; 5753 qeth_determine_capabilities(card); 5754 qeth_set_blkt_defaults(card); 5755 5756 enforced_disc = qeth_enforce_discipline(card); 5757 switch (enforced_disc) { 5758 case QETH_DISCIPLINE_UNDETERMINED: 5759 gdev->dev.type = &qeth_generic_devtype; 5760 break; 5761 default: 5762 card->info.layer_enforced = true; 5763 rc = qeth_core_load_discipline(card, enforced_disc); 5764 if (rc) 5765 goto err_load; 5766 5767 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype : 5768 card->discipline->devtype; 5769 rc = card->discipline->setup(card->gdev); 5770 if (rc) 5771 goto err_disc; 5772 break; 5773 } 5774 5775 return 0; 5776 5777 err_disc: 5778 qeth_core_free_discipline(card); 5779 err_load: 5780 err_chp_desc: 5781 free_netdev(card->dev); 5782 err_card: 5783 qeth_core_free_card(card); 5784 err_dev: 5785 put_device(dev); 5786 return rc; 5787 } 5788 5789 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5790 { 5791 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5792 5793 QETH_CARD_TEXT(card, 2, "removedv"); 5794 5795 if (card->discipline) { 5796 card->discipline->remove(gdev); 5797 qeth_core_free_discipline(card); 5798 } 5799 5800 qeth_free_qdio_queues(card); 5801 5802 free_netdev(card->dev); 5803 qeth_core_free_card(card); 5804 put_device(&gdev->dev); 5805 } 5806 5807 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5808 { 5809 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5810 int rc = 0; 5811 enum qeth_discipline_id def_discipline; 5812 5813 if (!card->discipline) { 5814 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : 5815 QETH_DISCIPLINE_LAYER2; 5816 rc = qeth_core_load_discipline(card, def_discipline); 5817 if (rc) 5818 goto err; 5819 rc = card->discipline->setup(card->gdev); 5820 if (rc) { 5821 qeth_core_free_discipline(card); 5822 goto err; 5823 } 5824 } 5825 rc = card->discipline->set_online(gdev); 5826 err: 5827 return rc; 5828 } 5829 5830 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5831 { 5832 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5833 return card->discipline->set_offline(gdev); 5834 } 5835 5836 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5837 { 5838 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5839 qeth_set_allowed_threads(card, 0, 1); 5840 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5841 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5842 qeth_qdio_clear_card(card, 0); 5843 qeth_drain_output_queues(card); 5844 qdio_free(CARD_DDEV(card)); 5845 } 5846 5847 static int qeth_suspend(struct ccwgroup_device *gdev) 5848 { 5849 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5850 5851 qeth_set_allowed_threads(card, 0, 1); 5852 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 5853 if (gdev->state == CCWGROUP_OFFLINE) 5854 return 0; 5855 5856 card->discipline->set_offline(gdev); 5857 return 0; 5858 } 5859 5860 static int qeth_resume(struct ccwgroup_device *gdev) 5861 { 5862 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5863 int rc; 5864 5865 rc = card->discipline->set_online(gdev); 5866 5867 qeth_set_allowed_threads(card, 0xffffffff, 0); 5868 if (rc) 5869 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n"); 5870 return rc; 5871 } 5872 5873 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5874 size_t count) 5875 { 5876 int err; 5877 5878 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3, 5879 buf); 5880 5881 return err ? err : count; 5882 } 5883 static DRIVER_ATTR_WO(group); 5884 5885 static struct attribute *qeth_drv_attrs[] = { 5886 &driver_attr_group.attr, 5887 NULL, 5888 }; 5889 static struct attribute_group qeth_drv_attr_group = { 5890 .attrs = qeth_drv_attrs, 5891 }; 5892 static const struct attribute_group *qeth_drv_attr_groups[] = { 5893 &qeth_drv_attr_group, 5894 NULL, 5895 }; 5896 5897 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5898 .driver = { 5899 .groups = qeth_drv_attr_groups, 5900 .owner = THIS_MODULE, 5901 .name = "qeth", 5902 }, 5903 .ccw_driver = &qeth_ccw_driver, 5904 .setup = qeth_core_probe_device, 5905 .remove = qeth_core_remove_device, 5906 .set_online = qeth_core_set_online, 5907 .set_offline = qeth_core_set_offline, 5908 .shutdown = qeth_core_shutdown, 5909 .prepare = NULL, 5910 .complete = NULL, 5911 .freeze = qeth_suspend, 5912 .thaw = qeth_resume, 5913 .restore = qeth_resume, 5914 }; 5915 5916 struct qeth_card *qeth_get_card_by_busid(char *bus_id) 5917 { 5918 struct ccwgroup_device *gdev; 5919 struct qeth_card *card; 5920 5921 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id); 5922 if (!gdev) 5923 return NULL; 5924 5925 card = dev_get_drvdata(&gdev->dev); 5926 put_device(&gdev->dev); 5927 return card; 5928 } 5929 EXPORT_SYMBOL_GPL(qeth_get_card_by_busid); 5930 5931 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5932 { 5933 struct qeth_card *card = dev->ml_priv; 5934 struct mii_ioctl_data *mii_data; 5935 int rc = 0; 5936 5937 if (!card) 5938 return -ENODEV; 5939 5940 switch (cmd) { 5941 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5942 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5943 break; 5944 case SIOC_QETH_GET_CARD_TYPE: 5945 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) && 5946 !IS_VM_NIC(card)) 5947 return 1; 5948 return 0; 5949 case SIOCGMIIPHY: 5950 mii_data = if_mii(rq); 5951 mii_data->phy_id = 0; 5952 break; 5953 case SIOCGMIIREG: 5954 mii_data = if_mii(rq); 5955 if (mii_data->phy_id != 0) 5956 rc = -EINVAL; 5957 else 5958 mii_data->val_out = qeth_mdio_read(dev, 5959 mii_data->phy_id, mii_data->reg_num); 5960 break; 5961 case SIOC_QETH_QUERY_OAT: 5962 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5963 break; 5964 default: 5965 if (card->discipline->do_ioctl) 5966 rc = card->discipline->do_ioctl(dev, rq, cmd); 5967 else 5968 rc = -EOPNOTSUPP; 5969 } 5970 if (rc) 5971 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5972 return rc; 5973 } 5974 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5975 5976 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply, 5977 unsigned long data) 5978 { 5979 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5980 u32 *features = reply->param; 5981 5982 if (qeth_setassparms_inspect_rc(cmd)) 5983 return -EIO; 5984 5985 *features = cmd->data.setassparms.data.flags_32bit; 5986 return 0; 5987 } 5988 5989 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype, 5990 enum qeth_prot_versions prot) 5991 { 5992 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP, 5993 NULL, prot); 5994 } 5995 5996 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, 5997 enum qeth_prot_versions prot) 5998 { 5999 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; 6000 struct qeth_cmd_buffer *iob; 6001 struct qeth_ipa_caps caps; 6002 u32 features; 6003 int rc; 6004 6005 /* some L3 HW requires combined L3+L4 csum offload: */ 6006 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 && 6007 cstype == IPA_OUTBOUND_CHECKSUM) 6008 required_features |= QETH_IPA_CHECKSUM_IP_HDR; 6009 6010 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6011 prot); 6012 if (!iob) 6013 return -ENOMEM; 6014 6015 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features); 6016 if (rc) 6017 return rc; 6018 6019 if ((required_features & features) != required_features) { 6020 qeth_set_csum_off(card, cstype, prot); 6021 return -EOPNOTSUPP; 6022 } 6023 6024 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6025 SETASS_DATA_SIZEOF(flags_32bit), 6026 prot); 6027 if (!iob) { 6028 qeth_set_csum_off(card, cstype, prot); 6029 return -ENOMEM; 6030 } 6031 6032 if (features & QETH_IPA_CHECKSUM_LP2LP) 6033 required_features |= QETH_IPA_CHECKSUM_LP2LP; 6034 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features; 6035 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); 6036 if (rc) { 6037 qeth_set_csum_off(card, cstype, prot); 6038 return rc; 6039 } 6040 6041 if (!qeth_ipa_caps_supported(&caps, required_features) || 6042 !qeth_ipa_caps_enabled(&caps, required_features)) { 6043 qeth_set_csum_off(card, cstype, prot); 6044 return -EOPNOTSUPP; 6045 } 6046 6047 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", 6048 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); 6049 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) && 6050 cstype == IPA_OUTBOUND_CHECKSUM) 6051 dev_warn(&card->gdev->dev, 6052 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6053 QETH_CARD_IFNAME(card)); 6054 return 0; 6055 } 6056 6057 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, 6058 enum qeth_prot_versions prot) 6059 { 6060 return on ? qeth_set_csum_on(card, cstype, prot) : 6061 qeth_set_csum_off(card, cstype, prot); 6062 } 6063 6064 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply, 6065 unsigned long data) 6066 { 6067 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6068 struct qeth_tso_start_data *tso_data = reply->param; 6069 6070 if (qeth_setassparms_inspect_rc(cmd)) 6071 return -EIO; 6072 6073 tso_data->mss = cmd->data.setassparms.data.tso.mss; 6074 tso_data->supported = cmd->data.setassparms.data.tso.supported; 6075 return 0; 6076 } 6077 6078 static int qeth_set_tso_off(struct qeth_card *card, 6079 enum qeth_prot_versions prot) 6080 { 6081 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO, 6082 IPA_CMD_ASS_STOP, NULL, prot); 6083 } 6084 6085 static int qeth_set_tso_on(struct qeth_card *card, 6086 enum qeth_prot_versions prot) 6087 { 6088 struct qeth_tso_start_data tso_data; 6089 struct qeth_cmd_buffer *iob; 6090 struct qeth_ipa_caps caps; 6091 int rc; 6092 6093 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6094 IPA_CMD_ASS_START, 0, prot); 6095 if (!iob) 6096 return -ENOMEM; 6097 6098 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data); 6099 if (rc) 6100 return rc; 6101 6102 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) { 6103 qeth_set_tso_off(card, prot); 6104 return -EOPNOTSUPP; 6105 } 6106 6107 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6108 IPA_CMD_ASS_ENABLE, 6109 SETASS_DATA_SIZEOF(caps), prot); 6110 if (!iob) { 6111 qeth_set_tso_off(card, prot); 6112 return -ENOMEM; 6113 } 6114 6115 /* enable TSO capability */ 6116 __ipa_cmd(iob)->data.setassparms.data.caps.enabled = 6117 QETH_IPA_LARGE_SEND_TCP; 6118 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); 6119 if (rc) { 6120 qeth_set_tso_off(card, prot); 6121 return rc; 6122 } 6123 6124 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) || 6125 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) { 6126 qeth_set_tso_off(card, prot); 6127 return -EOPNOTSUPP; 6128 } 6129 6130 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot, 6131 tso_data.mss); 6132 return 0; 6133 } 6134 6135 static int qeth_set_ipa_tso(struct qeth_card *card, bool on, 6136 enum qeth_prot_versions prot) 6137 { 6138 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot); 6139 } 6140 6141 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) 6142 { 6143 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; 6144 int rc_ipv6; 6145 6146 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6147 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6148 QETH_PROT_IPV4); 6149 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6150 /* no/one Offload Assist available, so the rc is trivial */ 6151 return rc_ipv4; 6152 6153 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6154 QETH_PROT_IPV6); 6155 6156 if (on) 6157 /* enable: success if any Assist is active */ 6158 return (rc_ipv6) ? rc_ipv4 : 0; 6159 6160 /* disable: failure if any Assist is still active */ 6161 return (rc_ipv6) ? rc_ipv6 : rc_ipv4; 6162 } 6163 6164 /** 6165 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features 6166 * @dev: a net_device 6167 */ 6168 void qeth_enable_hw_features(struct net_device *dev) 6169 { 6170 struct qeth_card *card = dev->ml_priv; 6171 netdev_features_t features; 6172 6173 features = dev->features; 6174 /* force-off any feature that might need an IPA sequence. 6175 * netdev_update_features() will restart them. 6176 */ 6177 dev->features &= ~dev->hw_features; 6178 /* toggle VLAN filter, so that VIDs are re-programmed: */ 6179 if (IS_LAYER2(card) && IS_VM_NIC(card)) { 6180 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 6181 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 6182 } 6183 netdev_update_features(dev); 6184 if (features != dev->features) 6185 dev_warn(&card->gdev->dev, 6186 "Device recovery failed to restore all offload features\n"); 6187 } 6188 EXPORT_SYMBOL_GPL(qeth_enable_hw_features); 6189 6190 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6191 { 6192 struct qeth_card *card = dev->ml_priv; 6193 netdev_features_t changed = dev->features ^ features; 6194 int rc = 0; 6195 6196 QETH_CARD_TEXT(card, 2, "setfeat"); 6197 QETH_CARD_HEX(card, 2, &features, sizeof(features)); 6198 6199 if ((changed & NETIF_F_IP_CSUM)) { 6200 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, 6201 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); 6202 if (rc) 6203 changed ^= NETIF_F_IP_CSUM; 6204 } 6205 if (changed & NETIF_F_IPV6_CSUM) { 6206 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, 6207 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); 6208 if (rc) 6209 changed ^= NETIF_F_IPV6_CSUM; 6210 } 6211 if (changed & NETIF_F_RXCSUM) { 6212 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); 6213 if (rc) 6214 changed ^= NETIF_F_RXCSUM; 6215 } 6216 if (changed & NETIF_F_TSO) { 6217 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO, 6218 QETH_PROT_IPV4); 6219 if (rc) 6220 changed ^= NETIF_F_TSO; 6221 } 6222 if (changed & NETIF_F_TSO6) { 6223 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6, 6224 QETH_PROT_IPV6); 6225 if (rc) 6226 changed ^= NETIF_F_TSO6; 6227 } 6228 6229 /* everything changed successfully? */ 6230 if ((dev->features ^ features) == changed) 6231 return 0; 6232 /* something went wrong. save changed features and return error */ 6233 dev->features ^= changed; 6234 return -EIO; 6235 } 6236 EXPORT_SYMBOL_GPL(qeth_set_features); 6237 6238 netdev_features_t qeth_fix_features(struct net_device *dev, 6239 netdev_features_t features) 6240 { 6241 struct qeth_card *card = dev->ml_priv; 6242 6243 QETH_CARD_TEXT(card, 2, "fixfeat"); 6244 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6245 features &= ~NETIF_F_IP_CSUM; 6246 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) 6247 features &= ~NETIF_F_IPV6_CSUM; 6248 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && 6249 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6250 features &= ~NETIF_F_RXCSUM; 6251 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6252 features &= ~NETIF_F_TSO; 6253 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO)) 6254 features &= ~NETIF_F_TSO6; 6255 6256 QETH_CARD_HEX(card, 2, &features, sizeof(features)); 6257 return features; 6258 } 6259 EXPORT_SYMBOL_GPL(qeth_fix_features); 6260 6261 netdev_features_t qeth_features_check(struct sk_buff *skb, 6262 struct net_device *dev, 6263 netdev_features_t features) 6264 { 6265 /* GSO segmentation builds skbs with 6266 * a (small) linear part for the headers, and 6267 * page frags for the data. 6268 * Compared to a linear skb, the header-only part consumes an 6269 * additional buffer element. This reduces buffer utilization, and 6270 * hurts throughput. So compress small segments into one element. 6271 */ 6272 if (netif_needs_gso(skb, features)) { 6273 /* match skb_segment(): */ 6274 unsigned int doffset = skb->data - skb_mac_header(skb); 6275 unsigned int hsize = skb_shinfo(skb)->gso_size; 6276 unsigned int hroom = skb_headroom(skb); 6277 6278 /* linearize only if resulting skb allocations are order-0: */ 6279 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6280 features &= ~NETIF_F_SG; 6281 } 6282 6283 return vlan_features_check(skb, features); 6284 } 6285 EXPORT_SYMBOL_GPL(qeth_features_check); 6286 6287 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 6288 { 6289 struct qeth_card *card = dev->ml_priv; 6290 struct qeth_qdio_out_q *queue; 6291 unsigned int i; 6292 6293 QETH_CARD_TEXT(card, 5, "getstat"); 6294 6295 stats->rx_packets = card->stats.rx_packets; 6296 stats->rx_bytes = card->stats.rx_bytes; 6297 stats->rx_errors = card->stats.rx_length_errors + 6298 card->stats.rx_frame_errors + 6299 card->stats.rx_fifo_errors; 6300 stats->rx_dropped = card->stats.rx_dropped_nomem + 6301 card->stats.rx_dropped_notsupp + 6302 card->stats.rx_dropped_runt; 6303 stats->multicast = card->stats.rx_multicast; 6304 stats->rx_length_errors = card->stats.rx_length_errors; 6305 stats->rx_frame_errors = card->stats.rx_frame_errors; 6306 stats->rx_fifo_errors = card->stats.rx_fifo_errors; 6307 6308 for (i = 0; i < card->qdio.no_out_queues; i++) { 6309 queue = card->qdio.out_qs[i]; 6310 6311 stats->tx_packets += queue->stats.tx_packets; 6312 stats->tx_bytes += queue->stats.tx_bytes; 6313 stats->tx_errors += queue->stats.tx_errors; 6314 stats->tx_dropped += queue->stats.tx_dropped; 6315 } 6316 } 6317 EXPORT_SYMBOL_GPL(qeth_get_stats64); 6318 6319 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 6320 u8 cast_type, struct net_device *sb_dev) 6321 { 6322 if (cast_type != RTN_UNICAST) 6323 return QETH_IQD_MCAST_TXQ; 6324 return QETH_IQD_MIN_UCAST_TXQ; 6325 } 6326 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue); 6327 6328 int qeth_open(struct net_device *dev) 6329 { 6330 struct qeth_card *card = dev->ml_priv; 6331 6332 QETH_CARD_TEXT(card, 4, "qethopen"); 6333 6334 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0) 6335 return -EIO; 6336 6337 card->data.state = CH_STATE_UP; 6338 netif_tx_start_all_queues(dev); 6339 6340 napi_enable(&card->napi); 6341 local_bh_disable(); 6342 napi_schedule(&card->napi); 6343 if (IS_IQD(card)) { 6344 struct qeth_qdio_out_q *queue; 6345 unsigned int i; 6346 6347 qeth_for_each_output_queue(card, queue, i) { 6348 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll, 6349 QETH_NAPI_WEIGHT); 6350 napi_enable(&queue->napi); 6351 napi_schedule(&queue->napi); 6352 } 6353 } 6354 /* kick-start the NAPI softirq: */ 6355 local_bh_enable(); 6356 return 0; 6357 } 6358 EXPORT_SYMBOL_GPL(qeth_open); 6359 6360 int qeth_stop(struct net_device *dev) 6361 { 6362 struct qeth_card *card = dev->ml_priv; 6363 6364 QETH_CARD_TEXT(card, 4, "qethstop"); 6365 if (IS_IQD(card)) { 6366 struct qeth_qdio_out_q *queue; 6367 unsigned int i; 6368 6369 /* Quiesce the NAPI instances: */ 6370 qeth_for_each_output_queue(card, queue, i) { 6371 napi_disable(&queue->napi); 6372 del_timer_sync(&queue->timer); 6373 } 6374 6375 /* Stop .ndo_start_xmit, might still access queue->napi. */ 6376 netif_tx_disable(dev); 6377 6378 /* Queues may get re-allocated, so remove the NAPIs here. */ 6379 qeth_for_each_output_queue(card, queue, i) 6380 netif_napi_del(&queue->napi); 6381 } else { 6382 netif_tx_disable(dev); 6383 } 6384 6385 napi_disable(&card->napi); 6386 return 0; 6387 } 6388 EXPORT_SYMBOL_GPL(qeth_stop); 6389 6390 static int __init qeth_core_init(void) 6391 { 6392 int rc; 6393 6394 pr_info("loading core functions\n"); 6395 6396 rc = qeth_register_dbf_views(); 6397 if (rc) 6398 goto dbf_err; 6399 qeth_core_root_dev = root_device_register("qeth"); 6400 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6401 if (rc) 6402 goto register_err; 6403 qeth_core_header_cache = 6404 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE, 6405 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE), 6406 0, NULL); 6407 if (!qeth_core_header_cache) { 6408 rc = -ENOMEM; 6409 goto slab_err; 6410 } 6411 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6412 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6413 if (!qeth_qdio_outbuf_cache) { 6414 rc = -ENOMEM; 6415 goto cqslab_err; 6416 } 6417 rc = ccw_driver_register(&qeth_ccw_driver); 6418 if (rc) 6419 goto ccw_err; 6420 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6421 if (rc) 6422 goto ccwgroup_err; 6423 6424 return 0; 6425 6426 ccwgroup_err: 6427 ccw_driver_unregister(&qeth_ccw_driver); 6428 ccw_err: 6429 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6430 cqslab_err: 6431 kmem_cache_destroy(qeth_core_header_cache); 6432 slab_err: 6433 root_device_unregister(qeth_core_root_dev); 6434 register_err: 6435 qeth_unregister_dbf_views(); 6436 dbf_err: 6437 pr_err("Initializing the qeth device driver failed\n"); 6438 return rc; 6439 } 6440 6441 static void __exit qeth_core_exit(void) 6442 { 6443 qeth_clear_dbf_list(); 6444 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6445 ccw_driver_unregister(&qeth_ccw_driver); 6446 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6447 kmem_cache_destroy(qeth_core_header_cache); 6448 root_device_unregister(qeth_core_root_dev); 6449 qeth_unregister_dbf_views(); 6450 pr_info("core functions removed\n"); 6451 } 6452 6453 module_init(qeth_core_init); 6454 module_exit(qeth_core_exit); 6455 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6456 MODULE_DESCRIPTION("qeth core functions"); 6457 MODULE_LICENSE("GPL"); 6458