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 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n", 520 rc, CARD_DEVID(card)); 521 atomic_set(&channel->irq_pending, 0); 522 qeth_put_cmd(iob); 523 card->read_or_write_problem = 1; 524 qeth_schedule_recovery(card); 525 wake_up(&card->wait_q); 526 } 527 return rc; 528 } 529 530 static int qeth_issue_next_read(struct qeth_card *card) 531 { 532 int ret; 533 534 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 535 ret = __qeth_issue_next_read(card); 536 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 537 538 return ret; 539 } 540 541 static void qeth_enqueue_cmd(struct qeth_card *card, 542 struct qeth_cmd_buffer *iob) 543 { 544 spin_lock_irq(&card->lock); 545 list_add_tail(&iob->list, &card->cmd_waiter_list); 546 spin_unlock_irq(&card->lock); 547 } 548 549 static void qeth_dequeue_cmd(struct qeth_card *card, 550 struct qeth_cmd_buffer *iob) 551 { 552 spin_lock_irq(&card->lock); 553 list_del(&iob->list); 554 spin_unlock_irq(&card->lock); 555 } 556 557 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason) 558 { 559 iob->rc = reason; 560 complete(&iob->done); 561 } 562 EXPORT_SYMBOL_GPL(qeth_notify_cmd); 563 564 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 565 struct qeth_card *card) 566 { 567 const char *ipa_name; 568 int com = cmd->hdr.command; 569 ipa_name = qeth_get_ipa_cmd_name(com); 570 571 if (rc) 572 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n", 573 ipa_name, com, CARD_DEVID(card), rc, 574 qeth_get_ipa_msg(rc)); 575 else 576 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n", 577 ipa_name, com, CARD_DEVID(card)); 578 } 579 580 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 581 struct qeth_ipa_cmd *cmd) 582 { 583 QETH_CARD_TEXT(card, 5, "chkipad"); 584 585 if (IS_IPA_REPLY(cmd)) { 586 if (cmd->hdr.command != IPA_CMD_SETCCID && 587 cmd->hdr.command != IPA_CMD_DELCCID && 588 cmd->hdr.command != IPA_CMD_MODCCID && 589 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 590 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 591 return cmd; 592 } 593 594 /* handle unsolicited event: */ 595 switch (cmd->hdr.command) { 596 case IPA_CMD_STOPLAN: 597 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) { 598 dev_err(&card->gdev->dev, 599 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n", 600 QETH_CARD_IFNAME(card)); 601 schedule_work(&card->close_dev_work); 602 } else { 603 dev_warn(&card->gdev->dev, 604 "The link for interface %s on CHPID 0x%X failed\n", 605 QETH_CARD_IFNAME(card), card->info.chpid); 606 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 607 netif_carrier_off(card->dev); 608 } 609 return NULL; 610 case IPA_CMD_STARTLAN: 611 dev_info(&card->gdev->dev, 612 "The link for %s on CHPID 0x%X has been restored\n", 613 QETH_CARD_IFNAME(card), card->info.chpid); 614 if (card->info.hwtrap) 615 card->info.hwtrap = 2; 616 qeth_schedule_recovery(card); 617 return NULL; 618 case IPA_CMD_SETBRIDGEPORT_IQD: 619 case IPA_CMD_SETBRIDGEPORT_OSA: 620 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 621 if (card->discipline->control_event_handler(card, cmd)) 622 return cmd; 623 return NULL; 624 case IPA_CMD_MODCCID: 625 return cmd; 626 case IPA_CMD_REGISTER_LOCAL_ADDR: 627 QETH_CARD_TEXT(card, 3, "irla"); 628 return NULL; 629 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 630 QETH_CARD_TEXT(card, 3, "urla"); 631 return NULL; 632 default: 633 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n"); 634 return cmd; 635 } 636 } 637 638 void qeth_clear_ipacmd_list(struct qeth_card *card) 639 { 640 struct qeth_cmd_buffer *iob; 641 unsigned long flags; 642 643 QETH_CARD_TEXT(card, 4, "clipalst"); 644 645 spin_lock_irqsave(&card->lock, flags); 646 list_for_each_entry(iob, &card->cmd_waiter_list, list) 647 qeth_notify_cmd(iob, -EIO); 648 spin_unlock_irqrestore(&card->lock, flags); 649 } 650 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 651 652 static int qeth_check_idx_response(struct qeth_card *card, 653 unsigned char *buffer) 654 { 655 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 656 if ((buffer[2] & 0xc0) == 0xc0) { 657 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n", 658 buffer[4]); 659 QETH_CARD_TEXT(card, 2, "ckidxres"); 660 QETH_CARD_TEXT(card, 2, " idxterm"); 661 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 662 if (buffer[4] == 0xf6) { 663 dev_err(&card->gdev->dev, 664 "The qeth device is not configured " 665 "for the OSI layer required by z/VM\n"); 666 return -EPERM; 667 } 668 return -EIO; 669 } 670 return 0; 671 } 672 673 void qeth_put_cmd(struct qeth_cmd_buffer *iob) 674 { 675 if (refcount_dec_and_test(&iob->ref_count)) { 676 kfree(iob->data); 677 kfree(iob); 678 } 679 } 680 EXPORT_SYMBOL_GPL(qeth_put_cmd); 681 682 static void qeth_release_buffer_cb(struct qeth_card *card, 683 struct qeth_cmd_buffer *iob, 684 unsigned int data_length) 685 { 686 qeth_put_cmd(iob); 687 } 688 689 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc) 690 { 691 qeth_notify_cmd(iob, rc); 692 qeth_put_cmd(iob); 693 } 694 695 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 696 unsigned int length, unsigned int ccws, 697 long timeout) 698 { 699 struct qeth_cmd_buffer *iob; 700 701 if (length > QETH_BUFSIZE) 702 return NULL; 703 704 iob = kzalloc(sizeof(*iob), GFP_KERNEL); 705 if (!iob) 706 return NULL; 707 708 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1), 709 GFP_KERNEL | GFP_DMA); 710 if (!iob->data) { 711 kfree(iob); 712 return NULL; 713 } 714 715 init_completion(&iob->done); 716 spin_lock_init(&iob->lock); 717 INIT_LIST_HEAD(&iob->list); 718 refcount_set(&iob->ref_count, 1); 719 iob->channel = channel; 720 iob->timeout = timeout; 721 iob->length = length; 722 return iob; 723 } 724 EXPORT_SYMBOL_GPL(qeth_alloc_cmd); 725 726 static void qeth_issue_next_read_cb(struct qeth_card *card, 727 struct qeth_cmd_buffer *iob, 728 unsigned int data_length) 729 { 730 struct qeth_cmd_buffer *request = NULL; 731 struct qeth_ipa_cmd *cmd = NULL; 732 struct qeth_reply *reply = NULL; 733 struct qeth_cmd_buffer *tmp; 734 unsigned long flags; 735 int rc = 0; 736 737 QETH_CARD_TEXT(card, 4, "sndctlcb"); 738 rc = qeth_check_idx_response(card, iob->data); 739 switch (rc) { 740 case 0: 741 break; 742 case -EIO: 743 qeth_clear_ipacmd_list(card); 744 qeth_schedule_recovery(card); 745 /* fall through */ 746 default: 747 goto out; 748 } 749 750 if (IS_IPA(iob->data)) { 751 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 752 cmd = qeth_check_ipa_data(card, cmd); 753 if (!cmd) 754 goto out; 755 if (IS_OSN(card) && card->osn_info.assist_cb && 756 cmd->hdr.command != IPA_CMD_STARTLAN) { 757 card->osn_info.assist_cb(card->dev, cmd); 758 goto out; 759 } 760 } else { 761 /* non-IPA commands should only flow during initialization */ 762 if (card->state != CARD_STATE_DOWN) 763 goto out; 764 } 765 766 /* match against pending cmd requests */ 767 spin_lock_irqsave(&card->lock, flags); 768 list_for_each_entry(tmp, &card->cmd_waiter_list, list) { 769 if (!IS_IPA(tmp->data) || 770 __ipa_cmd(tmp)->hdr.seqno == cmd->hdr.seqno) { 771 request = tmp; 772 /* take the object outside the lock */ 773 qeth_get_cmd(request); 774 break; 775 } 776 } 777 spin_unlock_irqrestore(&card->lock, flags); 778 779 if (!request) 780 goto out; 781 782 reply = &request->reply; 783 if (!reply->callback) { 784 rc = 0; 785 goto no_callback; 786 } 787 788 spin_lock_irqsave(&request->lock, flags); 789 if (request->rc) 790 /* Bail out when the requestor has already left: */ 791 rc = request->rc; 792 else 793 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd : 794 (unsigned long)iob); 795 spin_unlock_irqrestore(&request->lock, flags); 796 797 no_callback: 798 if (rc <= 0) 799 qeth_notify_cmd(request, rc); 800 qeth_put_cmd(request); 801 out: 802 memcpy(&card->seqno.pdu_hdr_ack, 803 QETH_PDU_HEADER_SEQ_NO(iob->data), 804 QETH_SEQ_NO_LENGTH); 805 qeth_put_cmd(iob); 806 __qeth_issue_next_read(card); 807 } 808 809 static int qeth_set_thread_start_bit(struct qeth_card *card, 810 unsigned long thread) 811 { 812 unsigned long flags; 813 814 spin_lock_irqsave(&card->thread_mask_lock, flags); 815 if (!(card->thread_allowed_mask & thread) || 816 (card->thread_start_mask & thread)) { 817 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 818 return -EPERM; 819 } 820 card->thread_start_mask |= thread; 821 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 822 return 0; 823 } 824 825 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 826 { 827 unsigned long flags; 828 829 spin_lock_irqsave(&card->thread_mask_lock, flags); 830 card->thread_start_mask &= ~thread; 831 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 832 wake_up(&card->wait_q); 833 } 834 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 835 836 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 837 { 838 unsigned long flags; 839 840 spin_lock_irqsave(&card->thread_mask_lock, flags); 841 card->thread_running_mask &= ~thread; 842 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 843 wake_up_all(&card->wait_q); 844 } 845 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 846 847 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 848 { 849 unsigned long flags; 850 int rc = 0; 851 852 spin_lock_irqsave(&card->thread_mask_lock, flags); 853 if (card->thread_start_mask & thread) { 854 if ((card->thread_allowed_mask & thread) && 855 !(card->thread_running_mask & thread)) { 856 rc = 1; 857 card->thread_start_mask &= ~thread; 858 card->thread_running_mask |= thread; 859 } else 860 rc = -EPERM; 861 } 862 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 863 return rc; 864 } 865 866 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 867 { 868 int rc = 0; 869 870 wait_event(card->wait_q, 871 (rc = __qeth_do_run_thread(card, thread)) >= 0); 872 return rc; 873 } 874 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 875 876 void qeth_schedule_recovery(struct qeth_card *card) 877 { 878 QETH_CARD_TEXT(card, 2, "startrec"); 879 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 880 schedule_work(&card->kernel_thread_starter); 881 } 882 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 883 884 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev, 885 struct irb *irb) 886 { 887 int dstat, cstat; 888 char *sense; 889 890 sense = (char *) irb->ecw; 891 cstat = irb->scsw.cmd.cstat; 892 dstat = irb->scsw.cmd.dstat; 893 894 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 895 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 896 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 897 QETH_CARD_TEXT(card, 2, "CGENCHK"); 898 dev_warn(&cdev->dev, "The qeth device driver " 899 "failed to recover an error on the device\n"); 900 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n", 901 CCW_DEVID(cdev), dstat, cstat); 902 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 903 16, 1, irb, 64, 1); 904 return 1; 905 } 906 907 if (dstat & DEV_STAT_UNIT_CHECK) { 908 if (sense[SENSE_RESETTING_EVENT_BYTE] & 909 SENSE_RESETTING_EVENT_FLAG) { 910 QETH_CARD_TEXT(card, 2, "REVIND"); 911 return 1; 912 } 913 if (sense[SENSE_COMMAND_REJECT_BYTE] & 914 SENSE_COMMAND_REJECT_FLAG) { 915 QETH_CARD_TEXT(card, 2, "CMDREJi"); 916 return 1; 917 } 918 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 919 QETH_CARD_TEXT(card, 2, "AFFE"); 920 return 1; 921 } 922 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 923 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 924 return 0; 925 } 926 QETH_CARD_TEXT(card, 2, "DGENCHK"); 927 return 1; 928 } 929 return 0; 930 } 931 932 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev, 933 struct irb *irb) 934 { 935 if (!IS_ERR(irb)) 936 return 0; 937 938 switch (PTR_ERR(irb)) { 939 case -EIO: 940 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n", 941 CCW_DEVID(cdev)); 942 QETH_CARD_TEXT(card, 2, "ckirberr"); 943 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 944 return -EIO; 945 case -ETIMEDOUT: 946 dev_warn(&cdev->dev, "A hardware operation timed out" 947 " on the device\n"); 948 QETH_CARD_TEXT(card, 2, "ckirberr"); 949 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 950 return -ETIMEDOUT; 951 default: 952 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n", 953 PTR_ERR(irb), CCW_DEVID(cdev)); 954 QETH_CARD_TEXT(card, 2, "ckirberr"); 955 QETH_CARD_TEXT(card, 2, " rc???"); 956 return PTR_ERR(irb); 957 } 958 } 959 960 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 961 struct irb *irb) 962 { 963 int rc; 964 int cstat, dstat; 965 struct qeth_cmd_buffer *iob = NULL; 966 struct ccwgroup_device *gdev; 967 struct qeth_channel *channel; 968 struct qeth_card *card; 969 970 /* while we hold the ccwdev lock, this stays valid: */ 971 gdev = dev_get_drvdata(&cdev->dev); 972 card = dev_get_drvdata(&gdev->dev); 973 if (!card) 974 return; 975 976 QETH_CARD_TEXT(card, 5, "irq"); 977 978 if (card->read.ccwdev == cdev) { 979 channel = &card->read; 980 QETH_CARD_TEXT(card, 5, "read"); 981 } else if (card->write.ccwdev == cdev) { 982 channel = &card->write; 983 QETH_CARD_TEXT(card, 5, "write"); 984 } else { 985 channel = &card->data; 986 QETH_CARD_TEXT(card, 5, "data"); 987 } 988 989 if (qeth_intparm_is_iob(intparm)) 990 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 991 992 rc = qeth_check_irb_error(card, cdev, irb); 993 if (rc) { 994 /* IO was terminated, free its resources. */ 995 if (iob) 996 qeth_cancel_cmd(iob, rc); 997 atomic_set(&channel->irq_pending, 0); 998 wake_up(&card->wait_q); 999 return; 1000 } 1001 1002 atomic_set(&channel->irq_pending, 0); 1003 1004 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1005 channel->state = CH_STATE_STOPPED; 1006 1007 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1008 channel->state = CH_STATE_HALTED; 1009 1010 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1011 QETH_CARD_TEXT(card, 6, "clrchpar"); 1012 /* we don't have to handle this further */ 1013 intparm = 0; 1014 } 1015 if (intparm == QETH_HALT_CHANNEL_PARM) { 1016 QETH_CARD_TEXT(card, 6, "hltchpar"); 1017 /* we don't have to handle this further */ 1018 intparm = 0; 1019 } 1020 1021 cstat = irb->scsw.cmd.cstat; 1022 dstat = irb->scsw.cmd.dstat; 1023 1024 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1025 (dstat & DEV_STAT_UNIT_CHECK) || 1026 (cstat)) { 1027 if (irb->esw.esw0.erw.cons) { 1028 dev_warn(&channel->ccwdev->dev, 1029 "The qeth device driver failed to recover " 1030 "an error on the device\n"); 1031 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n", 1032 CCW_DEVID(channel->ccwdev), cstat, 1033 dstat); 1034 print_hex_dump(KERN_WARNING, "qeth: irb ", 1035 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1036 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1037 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1038 } 1039 1040 rc = qeth_get_problem(card, cdev, irb); 1041 if (rc) { 1042 card->read_or_write_problem = 1; 1043 if (iob) 1044 qeth_cancel_cmd(iob, rc); 1045 qeth_clear_ipacmd_list(card); 1046 qeth_schedule_recovery(card); 1047 goto out; 1048 } 1049 } 1050 1051 if (iob) { 1052 /* sanity check: */ 1053 if (irb->scsw.cmd.count > iob->length) { 1054 qeth_cancel_cmd(iob, -EIO); 1055 goto out; 1056 } 1057 if (iob->callback) 1058 iob->callback(card, iob, 1059 iob->length - irb->scsw.cmd.count); 1060 } 1061 1062 out: 1063 wake_up(&card->wait_q); 1064 return; 1065 } 1066 1067 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1068 struct qeth_qdio_out_buffer *buf, 1069 enum iucv_tx_notify notification) 1070 { 1071 struct sk_buff *skb; 1072 1073 skb_queue_walk(&buf->skb_list, skb) { 1074 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1075 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1076 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk) 1077 iucv_sk(skb->sk)->sk_txnotify(skb, notification); 1078 } 1079 } 1080 1081 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error, 1082 int budget) 1083 { 1084 struct qeth_qdio_out_q *queue = buf->q; 1085 struct sk_buff *skb; 1086 1087 /* release may never happen from within CQ tasklet scope */ 1088 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1089 1090 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1091 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR); 1092 1093 /* Empty buffer? */ 1094 if (buf->next_element_to_fill == 0) 1095 return; 1096 1097 QETH_TXQ_STAT_INC(queue, bufs); 1098 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill); 1099 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) { 1100 unsigned int bytes = qdisc_pkt_len(skb); 1101 bool is_tso = skb_is_gso(skb); 1102 unsigned int packets; 1103 1104 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1; 1105 if (error) { 1106 QETH_TXQ_STAT_ADD(queue, tx_errors, packets); 1107 } else { 1108 QETH_TXQ_STAT_ADD(queue, tx_packets, packets); 1109 QETH_TXQ_STAT_ADD(queue, tx_bytes, bytes); 1110 if (skb->ip_summed == CHECKSUM_PARTIAL) 1111 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets); 1112 if (skb_is_nonlinear(skb)) 1113 QETH_TXQ_STAT_INC(queue, skbs_sg); 1114 if (is_tso) { 1115 QETH_TXQ_STAT_INC(queue, skbs_tso); 1116 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes); 1117 } 1118 } 1119 1120 napi_consume_skb(skb, budget); 1121 } 1122 } 1123 1124 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1125 struct qeth_qdio_out_buffer *buf, 1126 bool error, int budget) 1127 { 1128 int i; 1129 1130 /* is PCI flag set on buffer? */ 1131 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1132 atomic_dec(&queue->set_pci_flags_count); 1133 1134 qeth_tx_complete_buf(buf, error, budget); 1135 1136 for (i = 0; i < queue->max_elements; ++i) { 1137 if (buf->buffer->element[i].addr && buf->is_header[i]) 1138 kmem_cache_free(qeth_core_header_cache, 1139 buf->buffer->element[i].addr); 1140 buf->is_header[i] = 0; 1141 } 1142 1143 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements); 1144 buf->next_element_to_fill = 0; 1145 buf->bytes = 0; 1146 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); 1147 } 1148 1149 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free) 1150 { 1151 int j; 1152 1153 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1154 if (!q->bufs[j]) 1155 continue; 1156 qeth_cleanup_handled_pending(q, j, 1); 1157 qeth_clear_output_buffer(q, q->bufs[j], true, 0); 1158 if (free) { 1159 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1160 q->bufs[j] = NULL; 1161 } 1162 } 1163 } 1164 1165 void qeth_drain_output_queues(struct qeth_card *card) 1166 { 1167 int i; 1168 1169 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1170 /* clear outbound buffers to free skbs */ 1171 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1172 if (card->qdio.out_qs[i]) 1173 qeth_drain_output_queue(card->qdio.out_qs[i], false); 1174 } 1175 } 1176 EXPORT_SYMBOL_GPL(qeth_drain_output_queues); 1177 1178 static void qeth_free_buffer_pool(struct qeth_card *card) 1179 { 1180 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1181 int i = 0; 1182 list_for_each_entry_safe(pool_entry, tmp, 1183 &card->qdio.init_pool.entry_list, init_list){ 1184 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1185 free_page((unsigned long)pool_entry->elements[i]); 1186 list_del(&pool_entry->init_list); 1187 kfree(pool_entry); 1188 } 1189 } 1190 1191 static void qeth_clean_channel(struct qeth_channel *channel) 1192 { 1193 struct ccw_device *cdev = channel->ccwdev; 1194 1195 QETH_DBF_TEXT(SETUP, 2, "freech"); 1196 1197 spin_lock_irq(get_ccwdev_lock(cdev)); 1198 cdev->handler = NULL; 1199 spin_unlock_irq(get_ccwdev_lock(cdev)); 1200 } 1201 1202 static void qeth_setup_channel(struct qeth_channel *channel) 1203 { 1204 struct ccw_device *cdev = channel->ccwdev; 1205 1206 QETH_DBF_TEXT(SETUP, 2, "setupch"); 1207 1208 channel->state = CH_STATE_DOWN; 1209 atomic_set(&channel->irq_pending, 0); 1210 1211 spin_lock_irq(get_ccwdev_lock(cdev)); 1212 cdev->handler = qeth_irq; 1213 spin_unlock_irq(get_ccwdev_lock(cdev)); 1214 } 1215 1216 static int qeth_osa_set_output_queues(struct qeth_card *card, bool single) 1217 { 1218 unsigned int count = single ? 1 : card->dev->num_tx_queues; 1219 int rc; 1220 1221 rtnl_lock(); 1222 rc = netif_set_real_num_tx_queues(card->dev, count); 1223 rtnl_unlock(); 1224 1225 if (rc) 1226 return rc; 1227 1228 if (card->qdio.no_out_queues == count) 1229 return 0; 1230 1231 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) 1232 qeth_free_qdio_queues(card); 1233 1234 if (count == 1) 1235 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1236 1237 card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE; 1238 card->qdio.no_out_queues = count; 1239 return 0; 1240 } 1241 1242 static int qeth_update_from_chp_desc(struct qeth_card *card) 1243 { 1244 struct ccw_device *ccwdev; 1245 struct channel_path_desc_fmt0 *chp_dsc; 1246 int rc = 0; 1247 1248 QETH_CARD_TEXT(card, 2, "chp_desc"); 1249 1250 ccwdev = card->data.ccwdev; 1251 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1252 if (!chp_dsc) 1253 return -ENOMEM; 1254 1255 card->info.func_level = 0x4100 + chp_dsc->desc; 1256 1257 if (IS_OSD(card) || IS_OSX(card)) 1258 /* CHPP field bit 6 == 1 -> single queue */ 1259 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02); 1260 1261 kfree(chp_dsc); 1262 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues); 1263 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level); 1264 return rc; 1265 } 1266 1267 static void qeth_init_qdio_info(struct qeth_card *card) 1268 { 1269 QETH_CARD_TEXT(card, 4, "intqdinf"); 1270 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1271 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1272 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1273 1274 /* inbound */ 1275 card->qdio.no_in_queues = 1; 1276 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1277 if (IS_IQD(card)) 1278 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1279 else 1280 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1281 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1282 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1283 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1284 } 1285 1286 static void qeth_set_initial_options(struct qeth_card *card) 1287 { 1288 card->options.route4.type = NO_ROUTER; 1289 card->options.route6.type = NO_ROUTER; 1290 card->options.rx_sg_cb = QETH_RX_SG_CB; 1291 card->options.isolation = ISOLATION_MODE_NONE; 1292 card->options.cq = QETH_CQ_DISABLED; 1293 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 1294 } 1295 1296 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1297 { 1298 unsigned long flags; 1299 int rc = 0; 1300 1301 spin_lock_irqsave(&card->thread_mask_lock, flags); 1302 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1303 (u8) card->thread_start_mask, 1304 (u8) card->thread_allowed_mask, 1305 (u8) card->thread_running_mask); 1306 rc = (card->thread_start_mask & thread); 1307 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1308 return rc; 1309 } 1310 1311 static void qeth_start_kernel_thread(struct work_struct *work) 1312 { 1313 struct task_struct *ts; 1314 struct qeth_card *card = container_of(work, struct qeth_card, 1315 kernel_thread_starter); 1316 QETH_CARD_TEXT(card , 2, "strthrd"); 1317 1318 if (card->read.state != CH_STATE_UP && 1319 card->write.state != CH_STATE_UP) 1320 return; 1321 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1322 ts = kthread_run(card->discipline->recover, (void *)card, 1323 "qeth_recover"); 1324 if (IS_ERR(ts)) { 1325 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1326 qeth_clear_thread_running_bit(card, 1327 QETH_RECOVER_THREAD); 1328 } 1329 } 1330 } 1331 1332 static void qeth_buffer_reclaim_work(struct work_struct *); 1333 static void qeth_setup_card(struct qeth_card *card) 1334 { 1335 QETH_CARD_TEXT(card, 2, "setupcrd"); 1336 1337 card->info.type = CARD_RDEV(card)->id.driver_info; 1338 card->state = CARD_STATE_DOWN; 1339 spin_lock_init(&card->lock); 1340 spin_lock_init(&card->thread_mask_lock); 1341 mutex_init(&card->conf_mutex); 1342 mutex_init(&card->discipline_mutex); 1343 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1344 INIT_LIST_HEAD(&card->cmd_waiter_list); 1345 init_waitqueue_head(&card->wait_q); 1346 qeth_set_initial_options(card); 1347 /* IP address takeover */ 1348 INIT_LIST_HEAD(&card->ipato.entries); 1349 qeth_init_qdio_info(card); 1350 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1351 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1352 } 1353 1354 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1355 { 1356 struct qeth_card *card = container_of(slr, struct qeth_card, 1357 qeth_service_level); 1358 if (card->info.mcl_level[0]) 1359 seq_printf(m, "qeth: %s firmware level %s\n", 1360 CARD_BUS_ID(card), card->info.mcl_level); 1361 } 1362 1363 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev) 1364 { 1365 struct qeth_card *card; 1366 1367 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1368 card = kzalloc(sizeof(*card), GFP_KERNEL); 1369 if (!card) 1370 goto out; 1371 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1372 1373 card->gdev = gdev; 1374 dev_set_drvdata(&gdev->dev, card); 1375 CARD_RDEV(card) = gdev->cdev[0]; 1376 CARD_WDEV(card) = gdev->cdev[1]; 1377 CARD_DDEV(card) = gdev->cdev[2]; 1378 1379 card->event_wq = alloc_ordered_workqueue("%s_event", 0, 1380 dev_name(&gdev->dev)); 1381 if (!card->event_wq) 1382 goto out_wq; 1383 1384 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0); 1385 if (!card->read_cmd) 1386 goto out_read_cmd; 1387 1388 qeth_setup_channel(&card->read); 1389 qeth_setup_channel(&card->write); 1390 qeth_setup_channel(&card->data); 1391 card->qeth_service_level.seq_print = qeth_core_sl_print; 1392 register_service_level(&card->qeth_service_level); 1393 return card; 1394 1395 out_read_cmd: 1396 destroy_workqueue(card->event_wq); 1397 out_wq: 1398 dev_set_drvdata(&gdev->dev, NULL); 1399 kfree(card); 1400 out: 1401 return NULL; 1402 } 1403 1404 static int qeth_clear_channel(struct qeth_card *card, 1405 struct qeth_channel *channel) 1406 { 1407 int rc; 1408 1409 QETH_CARD_TEXT(card, 3, "clearch"); 1410 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1411 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1412 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1413 1414 if (rc) 1415 return rc; 1416 rc = wait_event_interruptible_timeout(card->wait_q, 1417 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1418 if (rc == -ERESTARTSYS) 1419 return rc; 1420 if (channel->state != CH_STATE_STOPPED) 1421 return -ETIME; 1422 channel->state = CH_STATE_DOWN; 1423 return 0; 1424 } 1425 1426 static int qeth_halt_channel(struct qeth_card *card, 1427 struct qeth_channel *channel) 1428 { 1429 int rc; 1430 1431 QETH_CARD_TEXT(card, 3, "haltch"); 1432 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1433 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1434 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1435 1436 if (rc) 1437 return rc; 1438 rc = wait_event_interruptible_timeout(card->wait_q, 1439 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1440 if (rc == -ERESTARTSYS) 1441 return rc; 1442 if (channel->state != CH_STATE_HALTED) 1443 return -ETIME; 1444 return 0; 1445 } 1446 1447 static int qeth_halt_channels(struct qeth_card *card) 1448 { 1449 int rc1 = 0, rc2 = 0, rc3 = 0; 1450 1451 QETH_CARD_TEXT(card, 3, "haltchs"); 1452 rc1 = qeth_halt_channel(card, &card->read); 1453 rc2 = qeth_halt_channel(card, &card->write); 1454 rc3 = qeth_halt_channel(card, &card->data); 1455 if (rc1) 1456 return rc1; 1457 if (rc2) 1458 return rc2; 1459 return rc3; 1460 } 1461 1462 static int qeth_clear_channels(struct qeth_card *card) 1463 { 1464 int rc1 = 0, rc2 = 0, rc3 = 0; 1465 1466 QETH_CARD_TEXT(card, 3, "clearchs"); 1467 rc1 = qeth_clear_channel(card, &card->read); 1468 rc2 = qeth_clear_channel(card, &card->write); 1469 rc3 = qeth_clear_channel(card, &card->data); 1470 if (rc1) 1471 return rc1; 1472 if (rc2) 1473 return rc2; 1474 return rc3; 1475 } 1476 1477 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1478 { 1479 int rc = 0; 1480 1481 QETH_CARD_TEXT(card, 3, "clhacrd"); 1482 1483 if (halt) 1484 rc = qeth_halt_channels(card); 1485 if (rc) 1486 return rc; 1487 return qeth_clear_channels(card); 1488 } 1489 1490 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1491 { 1492 int rc = 0; 1493 1494 QETH_CARD_TEXT(card, 3, "qdioclr"); 1495 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1496 QETH_QDIO_CLEANING)) { 1497 case QETH_QDIO_ESTABLISHED: 1498 if (IS_IQD(card)) 1499 rc = qdio_shutdown(CARD_DDEV(card), 1500 QDIO_FLAG_CLEANUP_USING_HALT); 1501 else 1502 rc = qdio_shutdown(CARD_DDEV(card), 1503 QDIO_FLAG_CLEANUP_USING_CLEAR); 1504 if (rc) 1505 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1506 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1507 break; 1508 case QETH_QDIO_CLEANING: 1509 return rc; 1510 default: 1511 break; 1512 } 1513 rc = qeth_clear_halt_card(card, use_halt); 1514 if (rc) 1515 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1516 return rc; 1517 } 1518 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1519 1520 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1521 { 1522 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1523 struct diag26c_vnic_resp *response = NULL; 1524 struct diag26c_vnic_req *request = NULL; 1525 struct ccw_dev_id id; 1526 char userid[80]; 1527 int rc = 0; 1528 1529 QETH_CARD_TEXT(card, 2, "vmlayer"); 1530 1531 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1532 if (rc) 1533 goto out; 1534 1535 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1536 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1537 if (!request || !response) { 1538 rc = -ENOMEM; 1539 goto out; 1540 } 1541 1542 ccw_device_get_id(CARD_RDEV(card), &id); 1543 request->resp_buf_len = sizeof(*response); 1544 request->resp_version = DIAG26C_VERSION6_VM65918; 1545 request->req_format = DIAG26C_VNIC_INFO; 1546 ASCEBC(userid, 8); 1547 memcpy(&request->sys_name, userid, 8); 1548 request->devno = id.devno; 1549 1550 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1551 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1552 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1553 if (rc) 1554 goto out; 1555 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1556 1557 if (request->resp_buf_len < sizeof(*response) || 1558 response->version != request->resp_version) { 1559 rc = -EIO; 1560 goto out; 1561 } 1562 1563 if (response->protocol == VNIC_INFO_PROT_L2) 1564 disc = QETH_DISCIPLINE_LAYER2; 1565 else if (response->protocol == VNIC_INFO_PROT_L3) 1566 disc = QETH_DISCIPLINE_LAYER3; 1567 1568 out: 1569 kfree(response); 1570 kfree(request); 1571 if (rc) 1572 QETH_CARD_TEXT_(card, 2, "err%x", rc); 1573 return disc; 1574 } 1575 1576 /* Determine whether the device requires a specific layer discipline */ 1577 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1578 { 1579 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1580 1581 if (IS_OSM(card) || IS_OSN(card)) 1582 disc = QETH_DISCIPLINE_LAYER2; 1583 else if (IS_VM_NIC(card)) 1584 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : 1585 qeth_vm_detect_layer(card); 1586 1587 switch (disc) { 1588 case QETH_DISCIPLINE_LAYER2: 1589 QETH_CARD_TEXT(card, 3, "force l2"); 1590 break; 1591 case QETH_DISCIPLINE_LAYER3: 1592 QETH_CARD_TEXT(card, 3, "force l3"); 1593 break; 1594 default: 1595 QETH_CARD_TEXT(card, 3, "force no"); 1596 } 1597 1598 return disc; 1599 } 1600 1601 static void qeth_set_blkt_defaults(struct qeth_card *card) 1602 { 1603 QETH_CARD_TEXT(card, 2, "cfgblkt"); 1604 1605 if (card->info.use_v1_blkt) { 1606 card->info.blkt.time_total = 0; 1607 card->info.blkt.inter_packet = 0; 1608 card->info.blkt.inter_packet_jumbo = 0; 1609 } else { 1610 card->info.blkt.time_total = 250; 1611 card->info.blkt.inter_packet = 5; 1612 card->info.blkt.inter_packet_jumbo = 15; 1613 } 1614 } 1615 1616 static void qeth_init_tokens(struct qeth_card *card) 1617 { 1618 card->token.issuer_rm_w = 0x00010103UL; 1619 card->token.cm_filter_w = 0x00010108UL; 1620 card->token.cm_connection_w = 0x0001010aUL; 1621 card->token.ulp_filter_w = 0x0001010bUL; 1622 card->token.ulp_connection_w = 0x0001010dUL; 1623 } 1624 1625 static void qeth_init_func_level(struct qeth_card *card) 1626 { 1627 switch (card->info.type) { 1628 case QETH_CARD_TYPE_IQD: 1629 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1630 break; 1631 case QETH_CARD_TYPE_OSD: 1632 case QETH_CARD_TYPE_OSN: 1633 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1634 break; 1635 default: 1636 break; 1637 } 1638 } 1639 1640 static void qeth_idx_finalize_cmd(struct qeth_card *card, 1641 struct qeth_cmd_buffer *iob) 1642 { 1643 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr, 1644 QETH_SEQ_NO_LENGTH); 1645 if (iob->channel == &card->write) 1646 card->seqno.trans_hdr++; 1647 } 1648 1649 static int qeth_peer_func_level(int level) 1650 { 1651 if ((level & 0xff) == 8) 1652 return (level & 0xff) + 0x400; 1653 if (((level >> 8) & 3) == 1) 1654 return (level & 0xff) + 0x200; 1655 return level; 1656 } 1657 1658 static void qeth_mpc_finalize_cmd(struct qeth_card *card, 1659 struct qeth_cmd_buffer *iob) 1660 { 1661 qeth_idx_finalize_cmd(card, iob); 1662 1663 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 1664 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 1665 card->seqno.pdu_hdr++; 1666 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 1667 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 1668 1669 iob->callback = qeth_release_buffer_cb; 1670 } 1671 1672 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card, 1673 void *data, 1674 unsigned int data_length) 1675 { 1676 struct qeth_cmd_buffer *iob; 1677 1678 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT); 1679 if (!iob) 1680 return NULL; 1681 1682 memcpy(iob->data, data, data_length); 1683 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length, 1684 iob->data); 1685 iob->finalize = qeth_mpc_finalize_cmd; 1686 return iob; 1687 } 1688 1689 /** 1690 * qeth_send_control_data() - send control command to the card 1691 * @card: qeth_card structure pointer 1692 * @iob: qeth_cmd_buffer pointer 1693 * @reply_cb: callback function pointer 1694 * @cb_card: pointer to the qeth_card structure 1695 * @cb_reply: pointer to the qeth_reply structure 1696 * @cb_cmd: pointer to the original iob for non-IPA 1697 * commands, or to the qeth_ipa_cmd structure 1698 * for the IPA commands. 1699 * @reply_param: private pointer passed to the callback 1700 * 1701 * Callback function gets called one or more times, with cb_cmd 1702 * pointing to the response returned by the hardware. Callback 1703 * function must return 1704 * > 0 if more reply blocks are expected, 1705 * 0 if the last or only reply block is received, and 1706 * < 0 on error. 1707 * Callback function can get the value of the reply_param pointer from the 1708 * field 'param' of the structure qeth_reply. 1709 */ 1710 1711 static int qeth_send_control_data(struct qeth_card *card, 1712 struct qeth_cmd_buffer *iob, 1713 int (*reply_cb)(struct qeth_card *cb_card, 1714 struct qeth_reply *cb_reply, 1715 unsigned long cb_cmd), 1716 void *reply_param) 1717 { 1718 struct qeth_channel *channel = iob->channel; 1719 struct qeth_reply *reply = &iob->reply; 1720 long timeout = iob->timeout; 1721 int rc; 1722 1723 QETH_CARD_TEXT(card, 2, "sendctl"); 1724 1725 reply->callback = reply_cb; 1726 reply->param = reply_param; 1727 1728 timeout = wait_event_interruptible_timeout(card->wait_q, 1729 qeth_trylock_channel(channel), 1730 timeout); 1731 if (timeout <= 0) { 1732 qeth_put_cmd(iob); 1733 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; 1734 } 1735 1736 if (iob->finalize) 1737 iob->finalize(card, iob); 1738 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN)); 1739 1740 qeth_enqueue_cmd(card, iob); 1741 1742 /* This pairs with iob->callback, and keeps the iob alive after IO: */ 1743 qeth_get_cmd(iob); 1744 1745 QETH_CARD_TEXT(card, 6, "noirqpnd"); 1746 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1747 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob), 1748 (addr_t) iob, 0, 0, timeout); 1749 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1750 if (rc) { 1751 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n", 1752 CARD_DEVID(card), rc); 1753 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1754 qeth_dequeue_cmd(card, iob); 1755 qeth_put_cmd(iob); 1756 atomic_set(&channel->irq_pending, 0); 1757 wake_up(&card->wait_q); 1758 goto out; 1759 } 1760 1761 timeout = wait_for_completion_interruptible_timeout(&iob->done, 1762 timeout); 1763 if (timeout <= 0) 1764 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; 1765 1766 qeth_dequeue_cmd(card, iob); 1767 1768 if (reply_cb) { 1769 /* Wait until the callback for a late reply has completed: */ 1770 spin_lock_irq(&iob->lock); 1771 if (rc) 1772 /* Zap any callback that's still pending: */ 1773 iob->rc = rc; 1774 spin_unlock_irq(&iob->lock); 1775 } 1776 1777 if (!rc) 1778 rc = iob->rc; 1779 1780 out: 1781 qeth_put_cmd(iob); 1782 return rc; 1783 } 1784 1785 struct qeth_node_desc { 1786 struct node_descriptor nd1; 1787 struct node_descriptor nd2; 1788 struct node_descriptor nd3; 1789 }; 1790 1791 static void qeth_read_conf_data_cb(struct qeth_card *card, 1792 struct qeth_cmd_buffer *iob, 1793 unsigned int data_length) 1794 { 1795 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data; 1796 int rc = 0; 1797 u8 *tag; 1798 1799 QETH_CARD_TEXT(card, 2, "cfgunit"); 1800 1801 if (data_length < sizeof(*nd)) { 1802 rc = -EINVAL; 1803 goto out; 1804 } 1805 1806 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] && 1807 nd->nd1.plant[1] == _ascebc['M']; 1808 tag = (u8 *)&nd->nd1.tag; 1809 card->info.chpid = tag[0]; 1810 card->info.unit_addr2 = tag[1]; 1811 1812 tag = (u8 *)&nd->nd2.tag; 1813 card->info.cula = tag[1]; 1814 1815 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 && 1816 nd->nd3.model[1] == 0xF0 && 1817 nd->nd3.model[2] >= 0xF1 && 1818 nd->nd3.model[2] <= 0xF4; 1819 1820 out: 1821 qeth_notify_cmd(iob, rc); 1822 qeth_put_cmd(iob); 1823 } 1824 1825 static int qeth_read_conf_data(struct qeth_card *card) 1826 { 1827 struct qeth_channel *channel = &card->data; 1828 struct qeth_cmd_buffer *iob; 1829 struct ciw *ciw; 1830 1831 /* scan for RCD command in extended SenseID data */ 1832 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1833 if (!ciw || ciw->cmd == 0) 1834 return -EOPNOTSUPP; 1835 if (ciw->count < sizeof(struct qeth_node_desc)) 1836 return -EINVAL; 1837 1838 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT); 1839 if (!iob) 1840 return -ENOMEM; 1841 1842 iob->callback = qeth_read_conf_data_cb; 1843 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length, 1844 iob->data); 1845 1846 return qeth_send_control_data(card, iob, NULL, NULL); 1847 } 1848 1849 static int qeth_idx_check_activate_response(struct qeth_card *card, 1850 struct qeth_channel *channel, 1851 struct qeth_cmd_buffer *iob) 1852 { 1853 int rc; 1854 1855 rc = qeth_check_idx_response(card, iob->data); 1856 if (rc) 1857 return rc; 1858 1859 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data)) 1860 return 0; 1861 1862 /* negative reply: */ 1863 QETH_CARD_TEXT_(card, 2, "idxneg%c", 1864 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 1865 1866 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 1867 case QETH_IDX_ACT_ERR_EXCL: 1868 dev_err(&channel->ccwdev->dev, 1869 "The adapter is used exclusively by another host\n"); 1870 return -EBUSY; 1871 case QETH_IDX_ACT_ERR_AUTH: 1872 case QETH_IDX_ACT_ERR_AUTH_USER: 1873 dev_err(&channel->ccwdev->dev, 1874 "Setting the device online failed because of insufficient authorization\n"); 1875 return -EPERM; 1876 default: 1877 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n", 1878 CCW_DEVID(channel->ccwdev)); 1879 return -EIO; 1880 } 1881 } 1882 1883 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card, 1884 struct qeth_cmd_buffer *iob, 1885 unsigned int data_length) 1886 { 1887 struct qeth_channel *channel = iob->channel; 1888 u16 peer_level; 1889 int rc; 1890 1891 QETH_CARD_TEXT(card, 2, "idxrdcb"); 1892 1893 rc = qeth_idx_check_activate_response(card, channel, iob); 1894 if (rc) 1895 goto out; 1896 1897 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1898 if (peer_level != qeth_peer_func_level(card->info.func_level)) { 1899 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", 1900 CCW_DEVID(channel->ccwdev), 1901 card->info.func_level, peer_level); 1902 rc = -EINVAL; 1903 goto out; 1904 } 1905 1906 memcpy(&card->token.issuer_rm_r, 1907 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1908 QETH_MPC_TOKEN_LENGTH); 1909 memcpy(&card->info.mcl_level[0], 1910 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 1911 1912 out: 1913 qeth_notify_cmd(iob, rc); 1914 qeth_put_cmd(iob); 1915 } 1916 1917 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card, 1918 struct qeth_cmd_buffer *iob, 1919 unsigned int data_length) 1920 { 1921 struct qeth_channel *channel = iob->channel; 1922 u16 peer_level; 1923 int rc; 1924 1925 QETH_CARD_TEXT(card, 2, "idxwrcb"); 1926 1927 rc = qeth_idx_check_activate_response(card, channel, iob); 1928 if (rc) 1929 goto out; 1930 1931 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 1932 if ((peer_level & ~0x0100) != 1933 qeth_peer_func_level(card->info.func_level)) { 1934 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", 1935 CCW_DEVID(channel->ccwdev), 1936 card->info.func_level, peer_level); 1937 rc = -EINVAL; 1938 } 1939 1940 out: 1941 qeth_notify_cmd(iob, rc); 1942 qeth_put_cmd(iob); 1943 } 1944 1945 static void qeth_idx_setup_activate_cmd(struct qeth_card *card, 1946 struct qeth_cmd_buffer *iob) 1947 { 1948 u16 addr = (card->info.cula << 8) + card->info.unit_addr2; 1949 u8 port = ((u8)card->dev->dev_port) | 0x80; 1950 struct ccw1 *ccw = __ccw_from_cmd(iob); 1951 struct ccw_dev_id dev_id; 1952 1953 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE, 1954 iob->data); 1955 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data); 1956 ccw_device_get_id(CARD_DDEV(card), &dev_id); 1957 iob->finalize = qeth_idx_finalize_cmd; 1958 1959 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1); 1960 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1961 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1962 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1963 &card->info.func_level, 2); 1964 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2); 1965 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2); 1966 } 1967 1968 static int qeth_idx_activate_read_channel(struct qeth_card *card) 1969 { 1970 struct qeth_channel *channel = &card->read; 1971 struct qeth_cmd_buffer *iob; 1972 int rc; 1973 1974 QETH_CARD_TEXT(card, 2, "idxread"); 1975 1976 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT); 1977 if (!iob) 1978 return -ENOMEM; 1979 1980 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1981 qeth_idx_setup_activate_cmd(card, iob); 1982 iob->callback = qeth_idx_activate_read_channel_cb; 1983 1984 rc = qeth_send_control_data(card, iob, NULL, NULL); 1985 if (rc) 1986 return rc; 1987 1988 channel->state = CH_STATE_UP; 1989 return 0; 1990 } 1991 1992 static int qeth_idx_activate_write_channel(struct qeth_card *card) 1993 { 1994 struct qeth_channel *channel = &card->write; 1995 struct qeth_cmd_buffer *iob; 1996 int rc; 1997 1998 QETH_CARD_TEXT(card, 2, "idxwrite"); 1999 2000 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT); 2001 if (!iob) 2002 return -ENOMEM; 2003 2004 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 2005 qeth_idx_setup_activate_cmd(card, iob); 2006 iob->callback = qeth_idx_activate_write_channel_cb; 2007 2008 rc = qeth_send_control_data(card, iob, NULL, NULL); 2009 if (rc) 2010 return rc; 2011 2012 channel->state = CH_STATE_UP; 2013 return 0; 2014 } 2015 2016 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2017 unsigned long data) 2018 { 2019 struct qeth_cmd_buffer *iob; 2020 2021 QETH_CARD_TEXT(card, 2, "cmenblcb"); 2022 2023 iob = (struct qeth_cmd_buffer *) data; 2024 memcpy(&card->token.cm_filter_r, 2025 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2026 QETH_MPC_TOKEN_LENGTH); 2027 return 0; 2028 } 2029 2030 static int qeth_cm_enable(struct qeth_card *card) 2031 { 2032 struct qeth_cmd_buffer *iob; 2033 2034 QETH_CARD_TEXT(card, 2, "cmenable"); 2035 2036 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE); 2037 if (!iob) 2038 return -ENOMEM; 2039 2040 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2041 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2042 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2043 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2044 2045 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL); 2046 } 2047 2048 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2049 unsigned long data) 2050 { 2051 struct qeth_cmd_buffer *iob; 2052 2053 QETH_CARD_TEXT(card, 2, "cmsetpcb"); 2054 2055 iob = (struct qeth_cmd_buffer *) data; 2056 memcpy(&card->token.cm_connection_r, 2057 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2058 QETH_MPC_TOKEN_LENGTH); 2059 return 0; 2060 } 2061 2062 static int qeth_cm_setup(struct qeth_card *card) 2063 { 2064 struct qeth_cmd_buffer *iob; 2065 2066 QETH_CARD_TEXT(card, 2, "cmsetup"); 2067 2068 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE); 2069 if (!iob) 2070 return -ENOMEM; 2071 2072 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2073 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2074 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2075 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2076 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2077 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2078 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL); 2079 } 2080 2081 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu) 2082 { 2083 struct net_device *dev = card->dev; 2084 unsigned int new_mtu; 2085 2086 if (!max_mtu) { 2087 /* IQD needs accurate max MTU to set up its RX buffers: */ 2088 if (IS_IQD(card)) 2089 return -EINVAL; 2090 /* tolerate quirky HW: */ 2091 max_mtu = ETH_MAX_MTU; 2092 } 2093 2094 rtnl_lock(); 2095 if (IS_IQD(card)) { 2096 /* move any device with default MTU to new max MTU: */ 2097 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu; 2098 2099 /* adjust RX buffer size to new max MTU: */ 2100 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE; 2101 if (dev->max_mtu && dev->max_mtu != max_mtu) 2102 qeth_free_qdio_queues(card); 2103 } else { 2104 if (dev->mtu) 2105 new_mtu = dev->mtu; 2106 /* default MTUs for first setup: */ 2107 else if (IS_LAYER2(card)) 2108 new_mtu = ETH_DATA_LEN; 2109 else 2110 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */ 2111 } 2112 2113 dev->max_mtu = max_mtu; 2114 dev->mtu = min(new_mtu, max_mtu); 2115 rtnl_unlock(); 2116 return 0; 2117 } 2118 2119 static int qeth_get_mtu_outof_framesize(int framesize) 2120 { 2121 switch (framesize) { 2122 case 0x4000: 2123 return 8192; 2124 case 0x6000: 2125 return 16384; 2126 case 0xa000: 2127 return 32768; 2128 case 0xffff: 2129 return 57344; 2130 default: 2131 return 0; 2132 } 2133 } 2134 2135 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2136 unsigned long data) 2137 { 2138 __u16 mtu, framesize; 2139 __u16 len; 2140 __u8 link_type; 2141 struct qeth_cmd_buffer *iob; 2142 2143 QETH_CARD_TEXT(card, 2, "ulpenacb"); 2144 2145 iob = (struct qeth_cmd_buffer *) data; 2146 memcpy(&card->token.ulp_filter_r, 2147 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2148 QETH_MPC_TOKEN_LENGTH); 2149 if (IS_IQD(card)) { 2150 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2151 mtu = qeth_get_mtu_outof_framesize(framesize); 2152 } else { 2153 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data); 2154 } 2155 *(u16 *)reply->param = mtu; 2156 2157 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2158 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2159 memcpy(&link_type, 2160 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2161 card->info.link_type = link_type; 2162 } else 2163 card->info.link_type = 0; 2164 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type); 2165 return 0; 2166 } 2167 2168 static u8 qeth_mpc_select_prot_type(struct qeth_card *card) 2169 { 2170 if (IS_OSN(card)) 2171 return QETH_PROT_OSN2; 2172 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP; 2173 } 2174 2175 static int qeth_ulp_enable(struct qeth_card *card) 2176 { 2177 u8 prot_type = qeth_mpc_select_prot_type(card); 2178 struct qeth_cmd_buffer *iob; 2179 u16 max_mtu; 2180 int rc; 2181 2182 QETH_CARD_TEXT(card, 2, "ulpenabl"); 2183 2184 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE); 2185 if (!iob) 2186 return -ENOMEM; 2187 2188 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port; 2189 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2190 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2191 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2192 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2193 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2194 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu); 2195 if (rc) 2196 return rc; 2197 return qeth_update_max_mtu(card, max_mtu); 2198 } 2199 2200 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2201 unsigned long data) 2202 { 2203 struct qeth_cmd_buffer *iob; 2204 2205 QETH_CARD_TEXT(card, 2, "ulpstpcb"); 2206 2207 iob = (struct qeth_cmd_buffer *) data; 2208 memcpy(&card->token.ulp_connection_r, 2209 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2210 QETH_MPC_TOKEN_LENGTH); 2211 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2212 3)) { 2213 QETH_CARD_TEXT(card, 2, "olmlimit"); 2214 dev_err(&card->gdev->dev, "A connection could not be " 2215 "established because of an OLM limit\n"); 2216 return -EMLINK; 2217 } 2218 return 0; 2219 } 2220 2221 static int qeth_ulp_setup(struct qeth_card *card) 2222 { 2223 __u16 temp; 2224 struct qeth_cmd_buffer *iob; 2225 struct ccw_dev_id dev_id; 2226 2227 QETH_CARD_TEXT(card, 2, "ulpsetup"); 2228 2229 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE); 2230 if (!iob) 2231 return -ENOMEM; 2232 2233 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2234 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2235 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2236 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2237 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2238 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2239 2240 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2241 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2242 temp = (card->info.cula << 8) + card->info.unit_addr2; 2243 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2244 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL); 2245 } 2246 2247 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2248 { 2249 struct qeth_qdio_out_buffer *newbuf; 2250 2251 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2252 if (!newbuf) 2253 return -ENOMEM; 2254 2255 newbuf->buffer = q->qdio_bufs[bidx]; 2256 skb_queue_head_init(&newbuf->skb_list); 2257 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2258 newbuf->q = q; 2259 newbuf->next_pending = q->bufs[bidx]; 2260 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2261 q->bufs[bidx] = newbuf; 2262 return 0; 2263 } 2264 2265 static void qeth_free_output_queue(struct qeth_qdio_out_q *q) 2266 { 2267 if (!q) 2268 return; 2269 2270 qeth_drain_output_queue(q, true); 2271 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2272 kfree(q); 2273 } 2274 2275 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void) 2276 { 2277 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2278 2279 if (!q) 2280 return NULL; 2281 2282 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2283 kfree(q); 2284 return NULL; 2285 } 2286 return q; 2287 } 2288 2289 static void qeth_tx_completion_timer(struct timer_list *timer) 2290 { 2291 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer); 2292 2293 napi_schedule(&queue->napi); 2294 QETH_TXQ_STAT_INC(queue, completion_timer); 2295 } 2296 2297 static int qeth_alloc_qdio_queues(struct qeth_card *card) 2298 { 2299 int i, j; 2300 2301 QETH_CARD_TEXT(card, 2, "allcqdbf"); 2302 2303 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2304 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2305 return 0; 2306 2307 QETH_CARD_TEXT(card, 2, "inq"); 2308 card->qdio.in_q = qeth_alloc_qdio_queue(); 2309 if (!card->qdio.in_q) 2310 goto out_nomem; 2311 2312 /* inbound buffer pool */ 2313 if (qeth_alloc_buffer_pool(card)) 2314 goto out_freeinq; 2315 2316 /* outbound */ 2317 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2318 struct qeth_qdio_out_q *queue; 2319 2320 queue = qeth_alloc_output_queue(); 2321 if (!queue) 2322 goto out_freeoutq; 2323 QETH_CARD_TEXT_(card, 2, "outq %i", i); 2324 QETH_CARD_HEX(card, 2, &queue, sizeof(void *)); 2325 card->qdio.out_qs[i] = queue; 2326 queue->card = card; 2327 queue->queue_no = i; 2328 timer_setup(&queue->timer, qeth_tx_completion_timer, 0); 2329 2330 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2331 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2332 WARN_ON(queue->bufs[j]); 2333 if (qeth_init_qdio_out_buf(queue, j)) 2334 goto out_freeoutqbufs; 2335 } 2336 } 2337 2338 /* completion */ 2339 if (qeth_alloc_cq(card)) 2340 goto out_freeoutq; 2341 2342 return 0; 2343 2344 out_freeoutqbufs: 2345 while (j > 0) { 2346 --j; 2347 kmem_cache_free(qeth_qdio_outbuf_cache, 2348 card->qdio.out_qs[i]->bufs[j]); 2349 card->qdio.out_qs[i]->bufs[j] = NULL; 2350 } 2351 out_freeoutq: 2352 while (i > 0) { 2353 qeth_free_output_queue(card->qdio.out_qs[--i]); 2354 card->qdio.out_qs[i] = NULL; 2355 } 2356 qeth_free_buffer_pool(card); 2357 out_freeinq: 2358 qeth_free_qdio_queue(card->qdio.in_q); 2359 card->qdio.in_q = NULL; 2360 out_nomem: 2361 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2362 return -ENOMEM; 2363 } 2364 2365 static void qeth_free_qdio_queues(struct qeth_card *card) 2366 { 2367 int i, j; 2368 2369 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2370 QETH_QDIO_UNINITIALIZED) 2371 return; 2372 2373 qeth_free_cq(card); 2374 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2375 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2376 if (card->qdio.in_q->bufs[j].rx_skb) 2377 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2378 } 2379 qeth_free_qdio_queue(card->qdio.in_q); 2380 card->qdio.in_q = NULL; 2381 /* inbound buffer pool */ 2382 qeth_free_buffer_pool(card); 2383 /* free outbound qdio_qs */ 2384 for (i = 0; i < card->qdio.no_out_queues; i++) { 2385 qeth_free_output_queue(card->qdio.out_qs[i]); 2386 card->qdio.out_qs[i] = NULL; 2387 } 2388 } 2389 2390 static void qeth_create_qib_param_field(struct qeth_card *card, 2391 char *param_field) 2392 { 2393 2394 param_field[0] = _ascebc['P']; 2395 param_field[1] = _ascebc['C']; 2396 param_field[2] = _ascebc['I']; 2397 param_field[3] = _ascebc['T']; 2398 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2399 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2400 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2401 } 2402 2403 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2404 char *param_field) 2405 { 2406 param_field[16] = _ascebc['B']; 2407 param_field[17] = _ascebc['L']; 2408 param_field[18] = _ascebc['K']; 2409 param_field[19] = _ascebc['T']; 2410 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2411 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2412 *((unsigned int *) (¶m_field[28])) = 2413 card->info.blkt.inter_packet_jumbo; 2414 } 2415 2416 static int qeth_qdio_activate(struct qeth_card *card) 2417 { 2418 QETH_CARD_TEXT(card, 3, "qdioact"); 2419 return qdio_activate(CARD_DDEV(card)); 2420 } 2421 2422 static int qeth_dm_act(struct qeth_card *card) 2423 { 2424 struct qeth_cmd_buffer *iob; 2425 2426 QETH_CARD_TEXT(card, 2, "dmact"); 2427 2428 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE); 2429 if (!iob) 2430 return -ENOMEM; 2431 2432 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2433 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2434 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2435 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2436 return qeth_send_control_data(card, iob, NULL, NULL); 2437 } 2438 2439 static int qeth_mpc_initialize(struct qeth_card *card) 2440 { 2441 int rc; 2442 2443 QETH_CARD_TEXT(card, 2, "mpcinit"); 2444 2445 rc = qeth_issue_next_read(card); 2446 if (rc) { 2447 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 2448 return rc; 2449 } 2450 rc = qeth_cm_enable(card); 2451 if (rc) { 2452 QETH_CARD_TEXT_(card, 2, "2err%d", rc); 2453 goto out_qdio; 2454 } 2455 rc = qeth_cm_setup(card); 2456 if (rc) { 2457 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 2458 goto out_qdio; 2459 } 2460 rc = qeth_ulp_enable(card); 2461 if (rc) { 2462 QETH_CARD_TEXT_(card, 2, "4err%d", rc); 2463 goto out_qdio; 2464 } 2465 rc = qeth_ulp_setup(card); 2466 if (rc) { 2467 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 2468 goto out_qdio; 2469 } 2470 rc = qeth_alloc_qdio_queues(card); 2471 if (rc) { 2472 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 2473 goto out_qdio; 2474 } 2475 rc = qeth_qdio_establish(card); 2476 if (rc) { 2477 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 2478 qeth_free_qdio_queues(card); 2479 goto out_qdio; 2480 } 2481 rc = qeth_qdio_activate(card); 2482 if (rc) { 2483 QETH_CARD_TEXT_(card, 2, "7err%d", rc); 2484 goto out_qdio; 2485 } 2486 rc = qeth_dm_act(card); 2487 if (rc) { 2488 QETH_CARD_TEXT_(card, 2, "8err%d", rc); 2489 goto out_qdio; 2490 } 2491 2492 return 0; 2493 out_qdio: 2494 qeth_qdio_clear_card(card, !IS_IQD(card)); 2495 qdio_free(CARD_DDEV(card)); 2496 return rc; 2497 } 2498 2499 void qeth_print_status_message(struct qeth_card *card) 2500 { 2501 switch (card->info.type) { 2502 case QETH_CARD_TYPE_OSD: 2503 case QETH_CARD_TYPE_OSM: 2504 case QETH_CARD_TYPE_OSX: 2505 /* VM will use a non-zero first character 2506 * to indicate a HiperSockets like reporting 2507 * of the level OSA sets the first character to zero 2508 * */ 2509 if (!card->info.mcl_level[0]) { 2510 sprintf(card->info.mcl_level, "%02x%02x", 2511 card->info.mcl_level[2], 2512 card->info.mcl_level[3]); 2513 break; 2514 } 2515 /* fallthrough */ 2516 case QETH_CARD_TYPE_IQD: 2517 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) { 2518 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2519 card->info.mcl_level[0]]; 2520 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2521 card->info.mcl_level[1]]; 2522 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2523 card->info.mcl_level[2]]; 2524 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2525 card->info.mcl_level[3]]; 2526 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2527 } 2528 break; 2529 default: 2530 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2531 } 2532 dev_info(&card->gdev->dev, 2533 "Device is a%s card%s%s%s\nwith link type %s.\n", 2534 qeth_get_cardname(card), 2535 (card->info.mcl_level[0]) ? " (level: " : "", 2536 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2537 (card->info.mcl_level[0]) ? ")" : "", 2538 qeth_get_cardname_short(card)); 2539 } 2540 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2541 2542 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2543 { 2544 struct qeth_buffer_pool_entry *entry; 2545 2546 QETH_CARD_TEXT(card, 5, "inwrklst"); 2547 2548 list_for_each_entry(entry, 2549 &card->qdio.init_pool.entry_list, init_list) { 2550 qeth_put_buffer_pool_entry(card, entry); 2551 } 2552 } 2553 2554 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2555 struct qeth_card *card) 2556 { 2557 struct list_head *plh; 2558 struct qeth_buffer_pool_entry *entry; 2559 int i, free; 2560 struct page *page; 2561 2562 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2563 return NULL; 2564 2565 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2566 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2567 free = 1; 2568 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2569 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2570 free = 0; 2571 break; 2572 } 2573 } 2574 if (free) { 2575 list_del_init(&entry->list); 2576 return entry; 2577 } 2578 } 2579 2580 /* no free buffer in pool so take first one and swap pages */ 2581 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2582 struct qeth_buffer_pool_entry, list); 2583 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2584 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2585 page = alloc_page(GFP_ATOMIC); 2586 if (!page) { 2587 return NULL; 2588 } else { 2589 free_page((unsigned long)entry->elements[i]); 2590 entry->elements[i] = page_address(page); 2591 QETH_CARD_STAT_INC(card, rx_sg_alloc_page); 2592 } 2593 } 2594 } 2595 list_del_init(&entry->list); 2596 return entry; 2597 } 2598 2599 static int qeth_init_input_buffer(struct qeth_card *card, 2600 struct qeth_qdio_buffer *buf) 2601 { 2602 struct qeth_buffer_pool_entry *pool_entry; 2603 int i; 2604 2605 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2606 buf->rx_skb = netdev_alloc_skb(card->dev, 2607 QETH_RX_PULL_LEN + ETH_HLEN); 2608 if (!buf->rx_skb) 2609 return 1; 2610 } 2611 2612 pool_entry = qeth_find_free_buffer_pool_entry(card); 2613 if (!pool_entry) 2614 return 1; 2615 2616 /* 2617 * since the buffer is accessed only from the input_tasklet 2618 * there shouldn't be a need to synchronize; also, since we use 2619 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2620 * buffers 2621 */ 2622 2623 buf->pool_entry = pool_entry; 2624 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2625 buf->buffer->element[i].length = PAGE_SIZE; 2626 buf->buffer->element[i].addr = pool_entry->elements[i]; 2627 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2628 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2629 else 2630 buf->buffer->element[i].eflags = 0; 2631 buf->buffer->element[i].sflags = 0; 2632 } 2633 return 0; 2634 } 2635 2636 static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card, 2637 struct qeth_qdio_out_q *queue) 2638 { 2639 if (!IS_IQD(card) || 2640 qeth_iqd_is_mcast_queue(card, queue) || 2641 card->options.cq == QETH_CQ_ENABLED || 2642 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd)) 2643 return 1; 2644 2645 return card->ssqd.mmwc ? card->ssqd.mmwc : 1; 2646 } 2647 2648 int qeth_init_qdio_queues(struct qeth_card *card) 2649 { 2650 unsigned int i; 2651 int rc; 2652 2653 QETH_CARD_TEXT(card, 2, "initqdqs"); 2654 2655 /* inbound queue */ 2656 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2657 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2658 qeth_initialize_working_pool_list(card); 2659 /*give only as many buffers to hardware as we have buffer pool entries*/ 2660 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2661 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2662 card->qdio.in_q->next_buf_to_init = 2663 card->qdio.in_buf_pool.buf_count - 1; 2664 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2665 card->qdio.in_buf_pool.buf_count - 1); 2666 if (rc) { 2667 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 2668 return rc; 2669 } 2670 2671 /* completion */ 2672 rc = qeth_cq_init(card); 2673 if (rc) { 2674 return rc; 2675 } 2676 2677 /* outbound queue */ 2678 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2679 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i]; 2680 2681 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2682 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card); 2683 queue->next_buf_to_fill = 0; 2684 queue->do_pack = 0; 2685 queue->prev_hdr = NULL; 2686 queue->bulk_start = 0; 2687 queue->bulk_count = 0; 2688 queue->bulk_max = qeth_tx_select_bulk_max(card, queue); 2689 atomic_set(&queue->used_buffers, 0); 2690 atomic_set(&queue->set_pci_flags_count, 0); 2691 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 2692 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i)); 2693 } 2694 return 0; 2695 } 2696 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2697 2698 static void qeth_ipa_finalize_cmd(struct qeth_card *card, 2699 struct qeth_cmd_buffer *iob) 2700 { 2701 qeth_mpc_finalize_cmd(card, iob); 2702 2703 /* override with IPA-specific values: */ 2704 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++; 2705 } 2706 2707 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2708 u16 cmd_length) 2709 { 2710 u8 prot_type = qeth_mpc_select_prot_type(card); 2711 u16 total_length = iob->length; 2712 2713 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length, 2714 iob->data); 2715 iob->finalize = qeth_ipa_finalize_cmd; 2716 2717 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2718 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2); 2719 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2720 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2); 2721 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2); 2722 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2723 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2724 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2); 2725 } 2726 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2727 2728 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 2729 enum qeth_ipa_cmds cmd_code, 2730 enum qeth_prot_versions prot, 2731 unsigned int data_length) 2732 { 2733 enum qeth_link_types link_type = card->info.link_type; 2734 struct qeth_cmd_buffer *iob; 2735 struct qeth_ipacmd_hdr *hdr; 2736 2737 data_length += offsetof(struct qeth_ipa_cmd, data); 2738 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1, 2739 QETH_IPA_TIMEOUT); 2740 if (!iob) 2741 return NULL; 2742 2743 qeth_prepare_ipa_cmd(card, iob, data_length); 2744 2745 hdr = &__ipa_cmd(iob)->hdr; 2746 hdr->command = cmd_code; 2747 hdr->initiator = IPA_CMD_INITIATOR_HOST; 2748 /* hdr->seqno is set by qeth_send_control_data() */ 2749 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1; 2750 hdr->rel_adapter_no = (u8) card->dev->dev_port; 2751 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1; 2752 hdr->param_count = 1; 2753 hdr->prot_version = prot; 2754 return iob; 2755 } 2756 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd); 2757 2758 static int qeth_send_ipa_cmd_cb(struct qeth_card *card, 2759 struct qeth_reply *reply, unsigned long data) 2760 { 2761 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2762 2763 return (cmd->hdr.return_code) ? -EIO : 0; 2764 } 2765 2766 /** 2767 * qeth_send_ipa_cmd() - send an IPA command 2768 * 2769 * See qeth_send_control_data() for explanation of the arguments. 2770 */ 2771 2772 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2773 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2774 unsigned long), 2775 void *reply_param) 2776 { 2777 int rc; 2778 2779 QETH_CARD_TEXT(card, 4, "sendipa"); 2780 2781 if (card->read_or_write_problem) { 2782 qeth_put_cmd(iob); 2783 return -EIO; 2784 } 2785 2786 if (reply_cb == NULL) 2787 reply_cb = qeth_send_ipa_cmd_cb; 2788 rc = qeth_send_control_data(card, iob, reply_cb, reply_param); 2789 if (rc == -ETIME) { 2790 qeth_clear_ipacmd_list(card); 2791 qeth_schedule_recovery(card); 2792 } 2793 return rc; 2794 } 2795 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 2796 2797 static int qeth_send_startlan_cb(struct qeth_card *card, 2798 struct qeth_reply *reply, unsigned long data) 2799 { 2800 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2801 2802 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE) 2803 return -ENETDOWN; 2804 2805 return (cmd->hdr.return_code) ? -EIO : 0; 2806 } 2807 2808 static int qeth_send_startlan(struct qeth_card *card) 2809 { 2810 struct qeth_cmd_buffer *iob; 2811 2812 QETH_CARD_TEXT(card, 2, "strtlan"); 2813 2814 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0); 2815 if (!iob) 2816 return -ENOMEM; 2817 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL); 2818 } 2819 2820 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 2821 { 2822 if (!cmd->hdr.return_code) 2823 cmd->hdr.return_code = 2824 cmd->data.setadapterparms.hdr.return_code; 2825 return cmd->hdr.return_code; 2826 } 2827 2828 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 2829 struct qeth_reply *reply, unsigned long data) 2830 { 2831 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2832 2833 QETH_CARD_TEXT(card, 3, "quyadpcb"); 2834 if (qeth_setadpparms_inspect_rc(cmd)) 2835 return -EIO; 2836 2837 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 2838 card->info.link_type = 2839 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 2840 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type); 2841 } 2842 card->options.adp.supported_funcs = 2843 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 2844 return 0; 2845 } 2846 2847 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 2848 enum qeth_ipa_setadp_cmd adp_cmd, 2849 unsigned int data_length) 2850 { 2851 struct qeth_ipacmd_setadpparms_hdr *hdr; 2852 struct qeth_cmd_buffer *iob; 2853 2854 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4, 2855 data_length + 2856 offsetof(struct qeth_ipacmd_setadpparms, 2857 data)); 2858 if (!iob) 2859 return NULL; 2860 2861 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr; 2862 hdr->cmdlength = sizeof(*hdr) + data_length; 2863 hdr->command_code = adp_cmd; 2864 hdr->used_total = 1; 2865 hdr->seq_no = 1; 2866 return iob; 2867 } 2868 2869 static int qeth_query_setadapterparms(struct qeth_card *card) 2870 { 2871 int rc; 2872 struct qeth_cmd_buffer *iob; 2873 2874 QETH_CARD_TEXT(card, 3, "queryadp"); 2875 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 2876 SETADP_DATA_SIZEOF(query_cmds_supp)); 2877 if (!iob) 2878 return -ENOMEM; 2879 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 2880 return rc; 2881 } 2882 2883 static int qeth_query_ipassists_cb(struct qeth_card *card, 2884 struct qeth_reply *reply, unsigned long data) 2885 { 2886 struct qeth_ipa_cmd *cmd; 2887 2888 QETH_CARD_TEXT(card, 2, "qipasscb"); 2889 2890 cmd = (struct qeth_ipa_cmd *) data; 2891 2892 switch (cmd->hdr.return_code) { 2893 case IPA_RC_SUCCESS: 2894 break; 2895 case IPA_RC_NOTSUPP: 2896 case IPA_RC_L2_UNSUPPORTED_CMD: 2897 QETH_CARD_TEXT(card, 2, "ipaunsup"); 2898 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 2899 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 2900 return -EOPNOTSUPP; 2901 default: 2902 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n", 2903 CARD_DEVID(card), cmd->hdr.return_code); 2904 return -EIO; 2905 } 2906 2907 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 2908 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 2909 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 2910 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 2911 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 2912 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 2913 } else 2914 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n", 2915 CARD_DEVID(card)); 2916 return 0; 2917 } 2918 2919 static int qeth_query_ipassists(struct qeth_card *card, 2920 enum qeth_prot_versions prot) 2921 { 2922 int rc; 2923 struct qeth_cmd_buffer *iob; 2924 2925 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot); 2926 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0); 2927 if (!iob) 2928 return -ENOMEM; 2929 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 2930 return rc; 2931 } 2932 2933 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 2934 struct qeth_reply *reply, unsigned long data) 2935 { 2936 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2937 struct qeth_query_switch_attributes *attrs; 2938 struct qeth_switch_info *sw_info; 2939 2940 QETH_CARD_TEXT(card, 2, "qswiatcb"); 2941 if (qeth_setadpparms_inspect_rc(cmd)) 2942 return -EIO; 2943 2944 sw_info = (struct qeth_switch_info *)reply->param; 2945 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 2946 sw_info->capabilities = attrs->capabilities; 2947 sw_info->settings = attrs->settings; 2948 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 2949 sw_info->settings); 2950 return 0; 2951 } 2952 2953 int qeth_query_switch_attributes(struct qeth_card *card, 2954 struct qeth_switch_info *sw_info) 2955 { 2956 struct qeth_cmd_buffer *iob; 2957 2958 QETH_CARD_TEXT(card, 2, "qswiattr"); 2959 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 2960 return -EOPNOTSUPP; 2961 if (!netif_carrier_ok(card->dev)) 2962 return -ENOMEDIUM; 2963 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0); 2964 if (!iob) 2965 return -ENOMEM; 2966 return qeth_send_ipa_cmd(card, iob, 2967 qeth_query_switch_attributes_cb, sw_info); 2968 } 2969 2970 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 2971 enum qeth_diags_cmds sub_cmd, 2972 unsigned int data_length) 2973 { 2974 struct qeth_ipacmd_diagass *cmd; 2975 struct qeth_cmd_buffer *iob; 2976 2977 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE, 2978 DIAG_HDR_LEN + data_length); 2979 if (!iob) 2980 return NULL; 2981 2982 cmd = &__ipa_cmd(iob)->data.diagass; 2983 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length; 2984 cmd->subcmd = sub_cmd; 2985 return iob; 2986 } 2987 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd); 2988 2989 static int qeth_query_setdiagass_cb(struct qeth_card *card, 2990 struct qeth_reply *reply, unsigned long data) 2991 { 2992 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2993 u16 rc = cmd->hdr.return_code; 2994 2995 if (rc) { 2996 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 2997 return -EIO; 2998 } 2999 3000 card->info.diagass_support = cmd->data.diagass.ext; 3001 return 0; 3002 } 3003 3004 static int qeth_query_setdiagass(struct qeth_card *card) 3005 { 3006 struct qeth_cmd_buffer *iob; 3007 3008 QETH_CARD_TEXT(card, 2, "qdiagass"); 3009 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0); 3010 if (!iob) 3011 return -ENOMEM; 3012 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3013 } 3014 3015 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3016 { 3017 unsigned long info = get_zeroed_page(GFP_KERNEL); 3018 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3019 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3020 struct ccw_dev_id ccwid; 3021 int level; 3022 3023 tid->chpid = card->info.chpid; 3024 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3025 tid->ssid = ccwid.ssid; 3026 tid->devno = ccwid.devno; 3027 if (!info) 3028 return; 3029 level = stsi(NULL, 0, 0, 0); 3030 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3031 tid->lparnr = info222->lpar_number; 3032 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3033 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3034 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3035 } 3036 free_page(info); 3037 return; 3038 } 3039 3040 static int qeth_hw_trap_cb(struct qeth_card *card, 3041 struct qeth_reply *reply, unsigned long data) 3042 { 3043 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3044 u16 rc = cmd->hdr.return_code; 3045 3046 if (rc) { 3047 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3048 return -EIO; 3049 } 3050 return 0; 3051 } 3052 3053 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3054 { 3055 struct qeth_cmd_buffer *iob; 3056 struct qeth_ipa_cmd *cmd; 3057 3058 QETH_CARD_TEXT(card, 2, "diagtrap"); 3059 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64); 3060 if (!iob) 3061 return -ENOMEM; 3062 cmd = __ipa_cmd(iob); 3063 cmd->data.diagass.type = 1; 3064 cmd->data.diagass.action = action; 3065 switch (action) { 3066 case QETH_DIAGS_TRAP_ARM: 3067 cmd->data.diagass.options = 0x0003; 3068 cmd->data.diagass.ext = 0x00010000 + 3069 sizeof(struct qeth_trap_id); 3070 qeth_get_trap_id(card, 3071 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3072 break; 3073 case QETH_DIAGS_TRAP_DISARM: 3074 cmd->data.diagass.options = 0x0001; 3075 break; 3076 case QETH_DIAGS_TRAP_CAPTURE: 3077 break; 3078 } 3079 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3080 } 3081 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3082 3083 static int qeth_check_qdio_errors(struct qeth_card *card, 3084 struct qdio_buffer *buf, 3085 unsigned int qdio_error, 3086 const char *dbftext) 3087 { 3088 if (qdio_error) { 3089 QETH_CARD_TEXT(card, 2, dbftext); 3090 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3091 buf->element[15].sflags); 3092 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3093 buf->element[14].sflags); 3094 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3095 if ((buf->element[15].sflags) == 0x12) { 3096 QETH_CARD_STAT_INC(card, rx_dropped); 3097 return 0; 3098 } else 3099 return 1; 3100 } 3101 return 0; 3102 } 3103 3104 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3105 { 3106 struct qeth_qdio_q *queue = card->qdio.in_q; 3107 struct list_head *lh; 3108 int count; 3109 int i; 3110 int rc; 3111 int newcount = 0; 3112 3113 count = (index < queue->next_buf_to_init)? 3114 card->qdio.in_buf_pool.buf_count - 3115 (queue->next_buf_to_init - index) : 3116 card->qdio.in_buf_pool.buf_count - 3117 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3118 /* only requeue at a certain threshold to avoid SIGAs */ 3119 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3120 for (i = queue->next_buf_to_init; 3121 i < queue->next_buf_to_init + count; ++i) { 3122 if (qeth_init_input_buffer(card, 3123 &queue->bufs[QDIO_BUFNR(i)])) { 3124 break; 3125 } else { 3126 newcount++; 3127 } 3128 } 3129 3130 if (newcount < count) { 3131 /* we are in memory shortage so we switch back to 3132 traditional skb allocation and drop packages */ 3133 atomic_set(&card->force_alloc_skb, 3); 3134 count = newcount; 3135 } else { 3136 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3137 } 3138 3139 if (!count) { 3140 i = 0; 3141 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3142 i++; 3143 if (i == card->qdio.in_buf_pool.buf_count) { 3144 QETH_CARD_TEXT(card, 2, "qsarbw"); 3145 card->reclaim_index = index; 3146 schedule_delayed_work( 3147 &card->buffer_reclaim_work, 3148 QETH_RECLAIM_WORK_TIME); 3149 } 3150 return; 3151 } 3152 3153 /* 3154 * according to old code it should be avoided to requeue all 3155 * 128 buffers in order to benefit from PCI avoidance. 3156 * this function keeps at least one buffer (the buffer at 3157 * 'index') un-requeued -> this buffer is the first buffer that 3158 * will be requeued the next time 3159 */ 3160 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3161 queue->next_buf_to_init, count); 3162 if (rc) { 3163 QETH_CARD_TEXT(card, 2, "qinberr"); 3164 } 3165 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init + 3166 count); 3167 } 3168 } 3169 3170 static void qeth_buffer_reclaim_work(struct work_struct *work) 3171 { 3172 struct qeth_card *card = container_of(work, struct qeth_card, 3173 buffer_reclaim_work.work); 3174 3175 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3176 qeth_queue_input_buffer(card, card->reclaim_index); 3177 } 3178 3179 static void qeth_handle_send_error(struct qeth_card *card, 3180 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3181 { 3182 int sbalf15 = buffer->buffer->element[15].sflags; 3183 3184 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3185 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3186 3187 if (!qdio_err) 3188 return; 3189 3190 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3191 return; 3192 3193 QETH_CARD_TEXT(card, 1, "lnkfail"); 3194 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3195 (u16)qdio_err, (u8)sbalf15); 3196 } 3197 3198 /** 3199 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3200 * @queue: queue to check for packing buffer 3201 * 3202 * Returns number of buffers that were prepared for flush. 3203 */ 3204 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3205 { 3206 struct qeth_qdio_out_buffer *buffer; 3207 3208 buffer = queue->bufs[queue->next_buf_to_fill]; 3209 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3210 (buffer->next_element_to_fill > 0)) { 3211 /* it's a packing buffer */ 3212 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3213 queue->next_buf_to_fill = 3214 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3215 return 1; 3216 } 3217 return 0; 3218 } 3219 3220 /* 3221 * Switched to packing state if the number of used buffers on a queue 3222 * reaches a certain limit. 3223 */ 3224 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3225 { 3226 if (!queue->do_pack) { 3227 if (atomic_read(&queue->used_buffers) 3228 >= QETH_HIGH_WATERMARK_PACK){ 3229 /* switch non-PACKING -> PACKING */ 3230 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3231 QETH_TXQ_STAT_INC(queue, packing_mode_switch); 3232 queue->do_pack = 1; 3233 } 3234 } 3235 } 3236 3237 /* 3238 * Switches from packing to non-packing mode. If there is a packing 3239 * buffer on the queue this buffer will be prepared to be flushed. 3240 * In that case 1 is returned to inform the caller. If no buffer 3241 * has to be flushed, zero is returned. 3242 */ 3243 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3244 { 3245 if (queue->do_pack) { 3246 if (atomic_read(&queue->used_buffers) 3247 <= QETH_LOW_WATERMARK_PACK) { 3248 /* switch PACKING -> non-PACKING */ 3249 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3250 QETH_TXQ_STAT_INC(queue, packing_mode_switch); 3251 queue->do_pack = 0; 3252 return qeth_prep_flush_pack_buffer(queue); 3253 } 3254 } 3255 return 0; 3256 } 3257 3258 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3259 int count) 3260 { 3261 struct qeth_card *card = queue->card; 3262 struct qeth_qdio_out_buffer *buf; 3263 int rc; 3264 int i; 3265 unsigned int qdio_flags; 3266 3267 for (i = index; i < index + count; ++i) { 3268 unsigned int bidx = QDIO_BUFNR(i); 3269 3270 buf = queue->bufs[bidx]; 3271 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3272 SBAL_EFLAGS_LAST_ENTRY; 3273 3274 if (queue->bufstates) 3275 queue->bufstates[bidx].user = buf; 3276 3277 if (IS_IQD(queue->card)) 3278 continue; 3279 3280 if (!queue->do_pack) { 3281 if ((atomic_read(&queue->used_buffers) >= 3282 (QETH_HIGH_WATERMARK_PACK - 3283 QETH_WATERMARK_PACK_FUZZ)) && 3284 !atomic_read(&queue->set_pci_flags_count)) { 3285 /* it's likely that we'll go to packing 3286 * mode soon */ 3287 atomic_inc(&queue->set_pci_flags_count); 3288 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3289 } 3290 } else { 3291 if (!atomic_read(&queue->set_pci_flags_count)) { 3292 /* 3293 * there's no outstanding PCI any more, so we 3294 * have to request a PCI to be sure the the PCI 3295 * will wake at some time in the future then we 3296 * can flush packed buffers that might still be 3297 * hanging around, which can happen if no 3298 * further send was requested by the stack 3299 */ 3300 atomic_inc(&queue->set_pci_flags_count); 3301 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3302 } 3303 } 3304 } 3305 3306 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3307 if (atomic_read(&queue->set_pci_flags_count)) 3308 qdio_flags |= QDIO_FLAG_PCI_OUT; 3309 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3310 queue->queue_no, index, count); 3311 3312 /* Fake the TX completion interrupt: */ 3313 if (IS_IQD(card)) 3314 napi_schedule(&queue->napi); 3315 3316 if (rc) { 3317 /* ignore temporary SIGA errors without busy condition */ 3318 if (rc == -ENOBUFS) 3319 return; 3320 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3321 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3322 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3323 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3324 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3325 3326 /* this must not happen under normal circumstances. if it 3327 * happens something is really wrong -> recover */ 3328 qeth_schedule_recovery(queue->card); 3329 return; 3330 } 3331 } 3332 3333 static void qeth_flush_queue(struct qeth_qdio_out_q *queue) 3334 { 3335 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count); 3336 3337 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count); 3338 queue->prev_hdr = NULL; 3339 queue->bulk_count = 0; 3340 } 3341 3342 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3343 { 3344 int index; 3345 int flush_cnt = 0; 3346 int q_was_packing = 0; 3347 3348 /* 3349 * check if weed have to switch to non-packing mode or if 3350 * we have to get a pci flag out on the queue 3351 */ 3352 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3353 !atomic_read(&queue->set_pci_flags_count)) { 3354 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3355 QETH_OUT_Q_UNLOCKED) { 3356 /* 3357 * If we get in here, there was no action in 3358 * do_send_packet. So, we check if there is a 3359 * packing buffer to be flushed here. 3360 */ 3361 index = queue->next_buf_to_fill; 3362 q_was_packing = queue->do_pack; 3363 /* queue->do_pack may change */ 3364 barrier(); 3365 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3366 if (!flush_cnt && 3367 !atomic_read(&queue->set_pci_flags_count)) 3368 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3369 if (q_was_packing) 3370 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt); 3371 if (flush_cnt) 3372 qeth_flush_buffers(queue, index, flush_cnt); 3373 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3374 } 3375 } 3376 } 3377 3378 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3379 unsigned long card_ptr) 3380 { 3381 struct qeth_card *card = (struct qeth_card *)card_ptr; 3382 3383 if (card->dev->flags & IFF_UP) 3384 napi_schedule(&card->napi); 3385 } 3386 3387 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3388 { 3389 int rc; 3390 3391 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3392 rc = -1; 3393 goto out; 3394 } else { 3395 if (card->options.cq == cq) { 3396 rc = 0; 3397 goto out; 3398 } 3399 3400 if (card->state != CARD_STATE_DOWN) { 3401 rc = -1; 3402 goto out; 3403 } 3404 3405 qeth_free_qdio_queues(card); 3406 card->options.cq = cq; 3407 rc = 0; 3408 } 3409 out: 3410 return rc; 3411 3412 } 3413 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3414 3415 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err, 3416 unsigned int queue, int first_element, 3417 int count) 3418 { 3419 struct qeth_qdio_q *cq = card->qdio.c_q; 3420 int i; 3421 int rc; 3422 3423 if (!qeth_is_cq(card, queue)) 3424 return; 3425 3426 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3427 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3428 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3429 3430 if (qdio_err) { 3431 netif_tx_stop_all_queues(card->dev); 3432 qeth_schedule_recovery(card); 3433 return; 3434 } 3435 3436 for (i = first_element; i < first_element + count; ++i) { 3437 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)]; 3438 int e = 0; 3439 3440 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3441 buffer->element[e].addr) { 3442 unsigned long phys_aob_addr; 3443 3444 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3445 qeth_qdio_handle_aob(card, phys_aob_addr); 3446 ++e; 3447 } 3448 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER); 3449 } 3450 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3451 card->qdio.c_q->next_buf_to_init, 3452 count); 3453 if (rc) { 3454 dev_warn(&card->gdev->dev, 3455 "QDIO reported an error, rc=%i\n", rc); 3456 QETH_CARD_TEXT(card, 2, "qcqherr"); 3457 } 3458 3459 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count); 3460 } 3461 3462 static void qeth_qdio_input_handler(struct ccw_device *ccwdev, 3463 unsigned int qdio_err, int queue, 3464 int first_elem, int count, 3465 unsigned long card_ptr) 3466 { 3467 struct qeth_card *card = (struct qeth_card *)card_ptr; 3468 3469 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3470 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3471 3472 if (qeth_is_cq(card, queue)) 3473 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3474 else if (qdio_err) 3475 qeth_schedule_recovery(card); 3476 } 3477 3478 static void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3479 unsigned int qdio_error, int __queue, 3480 int first_element, int count, 3481 unsigned long card_ptr) 3482 { 3483 struct qeth_card *card = (struct qeth_card *) card_ptr; 3484 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3485 struct net_device *dev = card->dev; 3486 struct netdev_queue *txq; 3487 int i; 3488 3489 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3490 if (qdio_error & QDIO_ERROR_FATAL) { 3491 QETH_CARD_TEXT(card, 2, "achkcond"); 3492 netif_tx_stop_all_queues(dev); 3493 qeth_schedule_recovery(card); 3494 return; 3495 } 3496 3497 for (i = first_element; i < (first_element + count); ++i) { 3498 struct qeth_qdio_out_buffer *buf = queue->bufs[QDIO_BUFNR(i)]; 3499 3500 qeth_handle_send_error(card, buf, qdio_error); 3501 qeth_clear_output_buffer(queue, buf, qdio_error, 0); 3502 } 3503 3504 atomic_sub(count, &queue->used_buffers); 3505 qeth_check_outbound_queue(queue); 3506 3507 txq = netdev_get_tx_queue(dev, __queue); 3508 /* xmit may have observed the full-condition, but not yet stopped the 3509 * txq. In which case the code below won't trigger. So before returning, 3510 * xmit will re-check the txq's fill level and wake it up if needed. 3511 */ 3512 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue)) 3513 netif_tx_wake_queue(txq); 3514 } 3515 3516 /** 3517 * Note: Function assumes that we have 4 outbound queues. 3518 */ 3519 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb) 3520 { 3521 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 3522 u8 tos; 3523 3524 switch (card->qdio.do_prio_queueing) { 3525 case QETH_PRIO_Q_ING_TOS: 3526 case QETH_PRIO_Q_ING_PREC: 3527 switch (qeth_get_ip_version(skb)) { 3528 case 4: 3529 tos = ipv4_get_dsfield(ip_hdr(skb)); 3530 break; 3531 case 6: 3532 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3533 break; 3534 default: 3535 return card->qdio.default_out_queue; 3536 } 3537 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3538 return ~tos >> 6 & 3; 3539 if (tos & IPTOS_MINCOST) 3540 return 3; 3541 if (tos & IPTOS_RELIABILITY) 3542 return 2; 3543 if (tos & IPTOS_THROUGHPUT) 3544 return 1; 3545 if (tos & IPTOS_LOWDELAY) 3546 return 0; 3547 break; 3548 case QETH_PRIO_Q_ING_SKB: 3549 if (skb->priority > 5) 3550 return 0; 3551 return ~skb->priority >> 1 & 3; 3552 case QETH_PRIO_Q_ING_VLAN: 3553 if (veth->h_vlan_proto == htons(ETH_P_8021Q)) 3554 return ~ntohs(veth->h_vlan_TCI) >> 3555 (VLAN_PRIO_SHIFT + 1) & 3; 3556 break; 3557 default: 3558 break; 3559 } 3560 return card->qdio.default_out_queue; 3561 } 3562 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3563 3564 /** 3565 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3566 * @skb: SKB address 3567 * 3568 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3569 * fragmented part of the SKB. Returns zero for linear SKB. 3570 */ 3571 static int qeth_get_elements_for_frags(struct sk_buff *skb) 3572 { 3573 int cnt, elements = 0; 3574 3575 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3576 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3577 3578 elements += qeth_get_elements_for_range( 3579 (addr_t)skb_frag_address(frag), 3580 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3581 } 3582 return elements; 3583 } 3584 3585 /** 3586 * qeth_count_elements() - Counts the number of QDIO buffer elements needed 3587 * to transmit an skb. 3588 * @skb: the skb to operate on. 3589 * @data_offset: skip this part of the skb's linear data 3590 * 3591 * Returns the number of pages, and thus QDIO buffer elements, needed to map the 3592 * skb's data (both its linear part and paged fragments). 3593 */ 3594 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset) 3595 { 3596 unsigned int elements = qeth_get_elements_for_frags(skb); 3597 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3598 addr_t start = (addr_t)skb->data + data_offset; 3599 3600 if (start != end) 3601 elements += qeth_get_elements_for_range(start, end); 3602 return elements; 3603 } 3604 EXPORT_SYMBOL_GPL(qeth_count_elements); 3605 3606 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \ 3607 MAX_TCP_HEADER) 3608 3609 /** 3610 * qeth_add_hw_header() - add a HW header to an skb. 3611 * @skb: skb that the HW header should be added to. 3612 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3613 * it contains a valid pointer to a qeth_hdr. 3614 * @hdr_len: length of the HW header. 3615 * @proto_len: length of protocol headers that need to be in same page as the 3616 * HW header. 3617 * 3618 * Returns the pushed length. If the header can't be pushed on 3619 * (eg. because it would cross a page boundary), it is allocated from 3620 * the cache instead and 0 is returned. 3621 * The number of needed buffer elements is returned in @elements. 3622 * Error to create the hdr is indicated by returning with < 0. 3623 */ 3624 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue, 3625 struct sk_buff *skb, struct qeth_hdr **hdr, 3626 unsigned int hdr_len, unsigned int proto_len, 3627 unsigned int *elements) 3628 { 3629 const unsigned int contiguous = proto_len ? proto_len : 1; 3630 const unsigned int max_elements = queue->max_elements; 3631 unsigned int __elements; 3632 addr_t start, end; 3633 bool push_ok; 3634 int rc; 3635 3636 check_layout: 3637 start = (addr_t)skb->data - hdr_len; 3638 end = (addr_t)skb->data; 3639 3640 if (qeth_get_elements_for_range(start, end + contiguous) == 1) { 3641 /* Push HW header into same page as first protocol header. */ 3642 push_ok = true; 3643 /* ... but TSO always needs a separate element for headers: */ 3644 if (skb_is_gso(skb)) 3645 __elements = 1 + qeth_count_elements(skb, proto_len); 3646 else 3647 __elements = qeth_count_elements(skb, 0); 3648 } else if (!proto_len && PAGE_ALIGNED(skb->data)) { 3649 /* Push HW header into preceding page, flush with skb->data. */ 3650 push_ok = true; 3651 __elements = 1 + qeth_count_elements(skb, 0); 3652 } else { 3653 /* Use header cache, copy protocol headers up. */ 3654 push_ok = false; 3655 __elements = 1 + qeth_count_elements(skb, proto_len); 3656 } 3657 3658 /* Compress skb to fit into one IO buffer: */ 3659 if (__elements > max_elements) { 3660 if (!skb_is_nonlinear(skb)) { 3661 /* Drop it, no easy way of shrinking it further. */ 3662 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n", 3663 max_elements, __elements, skb->len); 3664 return -E2BIG; 3665 } 3666 3667 rc = skb_linearize(skb); 3668 if (rc) { 3669 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail); 3670 return rc; 3671 } 3672 3673 QETH_TXQ_STAT_INC(queue, skbs_linearized); 3674 /* Linearization changed the layout, re-evaluate: */ 3675 goto check_layout; 3676 } 3677 3678 *elements = __elements; 3679 /* Add the header: */ 3680 if (push_ok) { 3681 *hdr = skb_push(skb, hdr_len); 3682 return hdr_len; 3683 } 3684 /* fall back */ 3685 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE) 3686 return -E2BIG; 3687 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3688 if (!*hdr) 3689 return -ENOMEM; 3690 /* Copy protocol headers behind HW header: */ 3691 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len); 3692 return 0; 3693 } 3694 3695 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue, 3696 struct sk_buff *curr_skb, 3697 struct qeth_hdr *curr_hdr) 3698 { 3699 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start]; 3700 struct qeth_hdr *prev_hdr = queue->prev_hdr; 3701 3702 if (!prev_hdr) 3703 return true; 3704 3705 /* All packets must have the same target: */ 3706 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) { 3707 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list); 3708 3709 return ether_addr_equal(eth_hdr(prev_skb)->h_dest, 3710 eth_hdr(curr_skb)->h_dest) && 3711 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2); 3712 } 3713 3714 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) && 3715 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3); 3716 } 3717 3718 static unsigned int __qeth_fill_buffer(struct sk_buff *skb, 3719 struct qeth_qdio_out_buffer *buf, 3720 bool is_first_elem, unsigned int offset) 3721 { 3722 struct qdio_buffer *buffer = buf->buffer; 3723 int element = buf->next_element_to_fill; 3724 int length = skb_headlen(skb) - offset; 3725 char *data = skb->data + offset; 3726 unsigned int elem_length, cnt; 3727 3728 /* map linear part into buffer element(s) */ 3729 while (length > 0) { 3730 elem_length = min_t(unsigned int, length, 3731 PAGE_SIZE - offset_in_page(data)); 3732 3733 buffer->element[element].addr = data; 3734 buffer->element[element].length = elem_length; 3735 length -= elem_length; 3736 if (is_first_elem) { 3737 is_first_elem = false; 3738 if (length || skb_is_nonlinear(skb)) 3739 /* skb needs additional elements */ 3740 buffer->element[element].eflags = 3741 SBAL_EFLAGS_FIRST_FRAG; 3742 else 3743 buffer->element[element].eflags = 0; 3744 } else { 3745 buffer->element[element].eflags = 3746 SBAL_EFLAGS_MIDDLE_FRAG; 3747 } 3748 3749 data += elem_length; 3750 element++; 3751 } 3752 3753 /* map page frags into buffer element(s) */ 3754 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3755 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3756 3757 data = skb_frag_address(frag); 3758 length = skb_frag_size(frag); 3759 while (length > 0) { 3760 elem_length = min_t(unsigned int, length, 3761 PAGE_SIZE - offset_in_page(data)); 3762 3763 buffer->element[element].addr = data; 3764 buffer->element[element].length = elem_length; 3765 buffer->element[element].eflags = 3766 SBAL_EFLAGS_MIDDLE_FRAG; 3767 3768 length -= elem_length; 3769 data += elem_length; 3770 element++; 3771 } 3772 } 3773 3774 if (buffer->element[element - 1].eflags) 3775 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 3776 buf->next_element_to_fill = element; 3777 return element; 3778 } 3779 3780 /** 3781 * qeth_fill_buffer() - map skb into an output buffer 3782 * @buf: buffer to transport the skb 3783 * @skb: skb to map into the buffer 3784 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 3785 * from qeth_core_header_cache. 3786 * @offset: when mapping the skb, start at skb->data + offset 3787 * @hd_len: if > 0, build a dedicated header element of this size 3788 */ 3789 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf, 3790 struct sk_buff *skb, struct qeth_hdr *hdr, 3791 unsigned int offset, unsigned int hd_len) 3792 { 3793 struct qdio_buffer *buffer = buf->buffer; 3794 bool is_first_elem = true; 3795 3796 __skb_queue_tail(&buf->skb_list, skb); 3797 3798 /* build dedicated header element */ 3799 if (hd_len) { 3800 int element = buf->next_element_to_fill; 3801 is_first_elem = false; 3802 3803 buffer->element[element].addr = hdr; 3804 buffer->element[element].length = hd_len; 3805 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 3806 /* remember to free cache-allocated qeth_hdr: */ 3807 buf->is_header[element] = ((void *)hdr != skb->data); 3808 buf->next_element_to_fill++; 3809 } 3810 3811 return __qeth_fill_buffer(skb, buf, is_first_elem, offset); 3812 } 3813 3814 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue, 3815 struct sk_buff *skb, unsigned int elements, 3816 struct qeth_hdr *hdr, unsigned int offset, 3817 unsigned int hd_len) 3818 { 3819 unsigned int bytes = qdisc_pkt_len(skb); 3820 struct qeth_qdio_out_buffer *buffer; 3821 unsigned int next_element; 3822 struct netdev_queue *txq; 3823 bool stopped = false; 3824 bool flush; 3825 3826 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)]; 3827 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); 3828 3829 /* Just a sanity check, the wake/stop logic should ensure that we always 3830 * get a free buffer. 3831 */ 3832 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 3833 return -EBUSY; 3834 3835 flush = !qeth_iqd_may_bulk(queue, skb, hdr); 3836 3837 if (flush || 3838 (buffer->next_element_to_fill + elements > queue->max_elements)) { 3839 if (buffer->next_element_to_fill > 0) { 3840 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3841 queue->bulk_count++; 3842 } 3843 3844 if (queue->bulk_count >= queue->bulk_max) 3845 flush = true; 3846 3847 if (flush) 3848 qeth_flush_queue(queue); 3849 3850 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + 3851 queue->bulk_count)]; 3852 3853 /* Sanity-check again: */ 3854 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 3855 return -EBUSY; 3856 } 3857 3858 if (buffer->next_element_to_fill == 0 && 3859 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { 3860 /* If a TX completion happens right _here_ and misses to wake 3861 * the txq, then our re-check below will catch the race. 3862 */ 3863 QETH_TXQ_STAT_INC(queue, stopped); 3864 netif_tx_stop_queue(txq); 3865 stopped = true; 3866 } 3867 3868 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len); 3869 buffer->bytes += bytes; 3870 queue->prev_hdr = hdr; 3871 3872 flush = __netdev_tx_sent_queue(txq, bytes, 3873 !stopped && netdev_xmit_more()); 3874 3875 if (flush || next_element >= queue->max_elements) { 3876 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3877 queue->bulk_count++; 3878 3879 if (queue->bulk_count >= queue->bulk_max) 3880 flush = true; 3881 3882 if (flush) 3883 qeth_flush_queue(queue); 3884 } 3885 3886 if (stopped && !qeth_out_queue_is_full(queue)) 3887 netif_tx_start_queue(txq); 3888 return 0; 3889 } 3890 3891 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 3892 struct sk_buff *skb, struct qeth_hdr *hdr, 3893 unsigned int offset, unsigned int hd_len, 3894 int elements_needed) 3895 { 3896 struct qeth_qdio_out_buffer *buffer; 3897 unsigned int next_element; 3898 struct netdev_queue *txq; 3899 bool stopped = false; 3900 int start_index; 3901 int flush_count = 0; 3902 int do_pack = 0; 3903 int tmp; 3904 int rc = 0; 3905 3906 /* spin until we get the queue ... */ 3907 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 3908 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 3909 start_index = queue->next_buf_to_fill; 3910 buffer = queue->bufs[queue->next_buf_to_fill]; 3911 3912 /* Just a sanity check, the wake/stop logic should ensure that we always 3913 * get a free buffer. 3914 */ 3915 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 3916 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3917 return -EBUSY; 3918 } 3919 3920 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); 3921 3922 /* check if we need to switch packing state of this queue */ 3923 qeth_switch_to_packing_if_needed(queue); 3924 if (queue->do_pack) { 3925 do_pack = 1; 3926 /* does packet fit in current buffer? */ 3927 if (buffer->next_element_to_fill + elements_needed > 3928 queue->max_elements) { 3929 /* ... no -> set state PRIMED */ 3930 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3931 flush_count++; 3932 queue->next_buf_to_fill = 3933 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3934 buffer = queue->bufs[queue->next_buf_to_fill]; 3935 3936 /* We stepped forward, so sanity-check again: */ 3937 if (atomic_read(&buffer->state) != 3938 QETH_QDIO_BUF_EMPTY) { 3939 qeth_flush_buffers(queue, start_index, 3940 flush_count); 3941 atomic_set(&queue->state, 3942 QETH_OUT_Q_UNLOCKED); 3943 rc = -EBUSY; 3944 goto out; 3945 } 3946 } 3947 } 3948 3949 if (buffer->next_element_to_fill == 0 && 3950 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { 3951 /* If a TX completion happens right _here_ and misses to wake 3952 * the txq, then our re-check below will catch the race. 3953 */ 3954 QETH_TXQ_STAT_INC(queue, stopped); 3955 netif_tx_stop_queue(txq); 3956 stopped = true; 3957 } 3958 3959 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len); 3960 3961 if (queue->do_pack) 3962 QETH_TXQ_STAT_INC(queue, skbs_pack); 3963 if (!queue->do_pack || stopped || next_element >= queue->max_elements) { 3964 flush_count++; 3965 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3966 queue->next_buf_to_fill = 3967 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3968 } 3969 3970 if (flush_count) 3971 qeth_flush_buffers(queue, start_index, flush_count); 3972 else if (!atomic_read(&queue->set_pci_flags_count)) 3973 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 3974 /* 3975 * queue->state will go from LOCKED -> UNLOCKED or from 3976 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 3977 * (switch packing state or flush buffer to get another pci flag out). 3978 * In that case we will enter this loop 3979 */ 3980 while (atomic_dec_return(&queue->state)) { 3981 start_index = queue->next_buf_to_fill; 3982 /* check if we can go back to non-packing state */ 3983 tmp = qeth_switch_to_nonpacking_if_needed(queue); 3984 /* 3985 * check if we need to flush a packing buffer to get a pci 3986 * flag out on the queue 3987 */ 3988 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 3989 tmp = qeth_prep_flush_pack_buffer(queue); 3990 if (tmp) { 3991 qeth_flush_buffers(queue, start_index, tmp); 3992 flush_count += tmp; 3993 } 3994 } 3995 out: 3996 /* at this point the queue is UNLOCKED again */ 3997 if (do_pack) 3998 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count); 3999 4000 if (stopped && !qeth_out_queue_is_full(queue)) 4001 netif_tx_start_queue(txq); 4002 return rc; 4003 } 4004 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4005 4006 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr, 4007 unsigned int payload_len, struct sk_buff *skb, 4008 unsigned int proto_len) 4009 { 4010 struct qeth_hdr_ext_tso *ext = &hdr->ext; 4011 4012 ext->hdr_tot_len = sizeof(*ext); 4013 ext->imb_hdr_no = 1; 4014 ext->hdr_type = 1; 4015 ext->hdr_version = 1; 4016 ext->hdr_len = 28; 4017 ext->payload_len = payload_len; 4018 ext->mss = skb_shinfo(skb)->gso_size; 4019 ext->dg_hdr_len = proto_len; 4020 } 4021 4022 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 4023 struct qeth_qdio_out_q *queue, int ipv, 4024 void (*fill_header)(struct qeth_qdio_out_q *queue, 4025 struct qeth_hdr *hdr, struct sk_buff *skb, 4026 int ipv, unsigned int data_len)) 4027 { 4028 unsigned int proto_len, hw_hdr_len; 4029 unsigned int frame_len = skb->len; 4030 bool is_tso = skb_is_gso(skb); 4031 unsigned int data_offset = 0; 4032 struct qeth_hdr *hdr = NULL; 4033 unsigned int hd_len = 0; 4034 unsigned int elements; 4035 int push_len, rc; 4036 4037 if (is_tso) { 4038 hw_hdr_len = sizeof(struct qeth_hdr_tso); 4039 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 4040 } else { 4041 hw_hdr_len = sizeof(struct qeth_hdr); 4042 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0; 4043 } 4044 4045 rc = skb_cow_head(skb, hw_hdr_len); 4046 if (rc) 4047 return rc; 4048 4049 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len, 4050 &elements); 4051 if (push_len < 0) 4052 return push_len; 4053 if (is_tso || !push_len) { 4054 /* HW header needs its own buffer element. */ 4055 hd_len = hw_hdr_len + proto_len; 4056 data_offset = push_len + proto_len; 4057 } 4058 memset(hdr, 0, hw_hdr_len); 4059 fill_header(queue, hdr, skb, ipv, frame_len); 4060 if (is_tso) 4061 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr, 4062 frame_len - proto_len, skb, proto_len); 4063 4064 if (IS_IQD(card)) { 4065 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset, 4066 hd_len); 4067 } else { 4068 /* TODO: drop skb_orphan() once TX completion is fast enough */ 4069 skb_orphan(skb); 4070 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset, 4071 hd_len, elements); 4072 } 4073 4074 if (rc && !push_len) 4075 kmem_cache_free(qeth_core_header_cache, hdr); 4076 4077 return rc; 4078 } 4079 EXPORT_SYMBOL_GPL(qeth_xmit); 4080 4081 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4082 struct qeth_reply *reply, unsigned long data) 4083 { 4084 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4085 struct qeth_ipacmd_setadpparms *setparms; 4086 4087 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4088 4089 setparms = &(cmd->data.setadapterparms); 4090 if (qeth_setadpparms_inspect_rc(cmd)) { 4091 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4092 setparms->data.mode = SET_PROMISC_MODE_OFF; 4093 } 4094 card->info.promisc_mode = setparms->data.mode; 4095 return (cmd->hdr.return_code) ? -EIO : 0; 4096 } 4097 4098 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable) 4099 { 4100 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON : 4101 SET_PROMISC_MODE_OFF; 4102 struct qeth_cmd_buffer *iob; 4103 struct qeth_ipa_cmd *cmd; 4104 4105 QETH_CARD_TEXT(card, 4, "setprom"); 4106 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4107 4108 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4109 SETADP_DATA_SIZEOF(mode)); 4110 if (!iob) 4111 return; 4112 cmd = __ipa_cmd(iob); 4113 cmd->data.setadapterparms.data.mode = mode; 4114 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4115 } 4116 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4117 4118 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4119 struct qeth_reply *reply, unsigned long data) 4120 { 4121 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4122 struct qeth_ipacmd_setadpparms *adp_cmd; 4123 4124 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4125 if (qeth_setadpparms_inspect_rc(cmd)) 4126 return -EIO; 4127 4128 adp_cmd = &cmd->data.setadapterparms; 4129 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr)) 4130 return -EADDRNOTAVAIL; 4131 4132 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) && 4133 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC)) 4134 return -EADDRNOTAVAIL; 4135 4136 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr); 4137 return 0; 4138 } 4139 4140 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4141 { 4142 int rc; 4143 struct qeth_cmd_buffer *iob; 4144 struct qeth_ipa_cmd *cmd; 4145 4146 QETH_CARD_TEXT(card, 4, "chgmac"); 4147 4148 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4149 SETADP_DATA_SIZEOF(change_addr)); 4150 if (!iob) 4151 return -ENOMEM; 4152 cmd = __ipa_cmd(iob); 4153 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4154 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4155 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4156 card->dev->dev_addr); 4157 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4158 NULL); 4159 return rc; 4160 } 4161 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4162 4163 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4164 struct qeth_reply *reply, unsigned long data) 4165 { 4166 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4167 struct qeth_set_access_ctrl *access_ctrl_req; 4168 int fallback = *(int *)reply->param; 4169 4170 QETH_CARD_TEXT(card, 4, "setaccb"); 4171 if (cmd->hdr.return_code) 4172 return -EIO; 4173 qeth_setadpparms_inspect_rc(cmd); 4174 4175 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4176 QETH_CARD_TEXT_(card, 2, "rc=%d", 4177 cmd->data.setadapterparms.hdr.return_code); 4178 if (cmd->data.setadapterparms.hdr.return_code != 4179 SET_ACCESS_CTRL_RC_SUCCESS) 4180 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n", 4181 access_ctrl_req->subcmd_code, CARD_DEVID(card), 4182 cmd->data.setadapterparms.hdr.return_code); 4183 switch (cmd->data.setadapterparms.hdr.return_code) { 4184 case SET_ACCESS_CTRL_RC_SUCCESS: 4185 if (card->options.isolation == ISOLATION_MODE_NONE) { 4186 dev_info(&card->gdev->dev, 4187 "QDIO data connection isolation is deactivated\n"); 4188 } else { 4189 dev_info(&card->gdev->dev, 4190 "QDIO data connection isolation is activated\n"); 4191 } 4192 break; 4193 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4194 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n", 4195 CARD_DEVID(card)); 4196 if (fallback) 4197 card->options.isolation = card->options.prev_isolation; 4198 break; 4199 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4200 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n", 4201 CARD_DEVID(card)); 4202 if (fallback) 4203 card->options.isolation = card->options.prev_isolation; 4204 break; 4205 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4206 dev_err(&card->gdev->dev, "Adapter does not " 4207 "support QDIO data connection isolation\n"); 4208 break; 4209 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4210 dev_err(&card->gdev->dev, 4211 "Adapter is dedicated. " 4212 "QDIO data connection isolation not supported\n"); 4213 if (fallback) 4214 card->options.isolation = card->options.prev_isolation; 4215 break; 4216 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4217 dev_err(&card->gdev->dev, 4218 "TSO does not permit QDIO data connection isolation\n"); 4219 if (fallback) 4220 card->options.isolation = card->options.prev_isolation; 4221 break; 4222 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4223 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4224 "support reflective relay mode\n"); 4225 if (fallback) 4226 card->options.isolation = card->options.prev_isolation; 4227 break; 4228 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4229 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4230 "enabled at the adjacent switch port"); 4231 if (fallback) 4232 card->options.isolation = card->options.prev_isolation; 4233 break; 4234 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4235 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4236 "at the adjacent switch failed\n"); 4237 break; 4238 default: 4239 /* this should never happen */ 4240 if (fallback) 4241 card->options.isolation = card->options.prev_isolation; 4242 break; 4243 } 4244 return (cmd->hdr.return_code) ? -EIO : 0; 4245 } 4246 4247 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4248 enum qeth_ipa_isolation_modes isolation, int fallback) 4249 { 4250 int rc; 4251 struct qeth_cmd_buffer *iob; 4252 struct qeth_ipa_cmd *cmd; 4253 struct qeth_set_access_ctrl *access_ctrl_req; 4254 4255 QETH_CARD_TEXT(card, 4, "setacctl"); 4256 4257 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4258 SETADP_DATA_SIZEOF(set_access_ctrl)); 4259 if (!iob) 4260 return -ENOMEM; 4261 cmd = __ipa_cmd(iob); 4262 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4263 access_ctrl_req->subcmd_code = isolation; 4264 4265 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4266 &fallback); 4267 QETH_CARD_TEXT_(card, 2, "rc=%d", rc); 4268 return rc; 4269 } 4270 4271 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4272 { 4273 int rc = 0; 4274 4275 QETH_CARD_TEXT(card, 4, "setactlo"); 4276 4277 if ((IS_OSD(card) || IS_OSX(card)) && 4278 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4279 rc = qeth_setadpparms_set_access_ctrl(card, 4280 card->options.isolation, fallback); 4281 if (rc) { 4282 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n", 4283 rc, CARD_DEVID(card)); 4284 rc = -EOPNOTSUPP; 4285 } 4286 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4287 card->options.isolation = ISOLATION_MODE_NONE; 4288 4289 dev_err(&card->gdev->dev, "Adapter does not " 4290 "support QDIO data connection isolation\n"); 4291 rc = -EOPNOTSUPP; 4292 } 4293 return rc; 4294 } 4295 4296 void qeth_tx_timeout(struct net_device *dev) 4297 { 4298 struct qeth_card *card; 4299 4300 card = dev->ml_priv; 4301 QETH_CARD_TEXT(card, 4, "txtimeo"); 4302 qeth_schedule_recovery(card); 4303 } 4304 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4305 4306 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4307 { 4308 struct qeth_card *card = dev->ml_priv; 4309 int rc = 0; 4310 4311 switch (regnum) { 4312 case MII_BMCR: /* Basic mode control register */ 4313 rc = BMCR_FULLDPLX; 4314 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4315 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4316 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) && 4317 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH)) 4318 rc |= BMCR_SPEED100; 4319 break; 4320 case MII_BMSR: /* Basic mode status register */ 4321 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4322 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4323 BMSR_100BASE4; 4324 break; 4325 case MII_PHYSID1: /* PHYS ID 1 */ 4326 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4327 dev->dev_addr[2]; 4328 rc = (rc >> 5) & 0xFFFF; 4329 break; 4330 case MII_PHYSID2: /* PHYS ID 2 */ 4331 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4332 break; 4333 case MII_ADVERTISE: /* Advertisement control reg */ 4334 rc = ADVERTISE_ALL; 4335 break; 4336 case MII_LPA: /* Link partner ability reg */ 4337 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4338 LPA_100BASE4 | LPA_LPACK; 4339 break; 4340 case MII_EXPANSION: /* Expansion register */ 4341 break; 4342 case MII_DCOUNTER: /* disconnect counter */ 4343 break; 4344 case MII_FCSCOUNTER: /* false carrier counter */ 4345 break; 4346 case MII_NWAYTEST: /* N-way auto-neg test register */ 4347 break; 4348 case MII_RERRCOUNTER: /* rx error counter */ 4349 rc = card->stats.rx_errors; 4350 break; 4351 case MII_SREVISION: /* silicon revision */ 4352 break; 4353 case MII_RESV1: /* reserved 1 */ 4354 break; 4355 case MII_LBRERROR: /* loopback, rx, bypass error */ 4356 break; 4357 case MII_PHYADDR: /* physical address */ 4358 break; 4359 case MII_RESV2: /* reserved 2 */ 4360 break; 4361 case MII_TPISTATUS: /* TPI status for 10mbps */ 4362 break; 4363 case MII_NCONFIG: /* network interface config */ 4364 break; 4365 default: 4366 break; 4367 } 4368 return rc; 4369 } 4370 4371 static int qeth_snmp_command_cb(struct qeth_card *card, 4372 struct qeth_reply *reply, unsigned long data) 4373 { 4374 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4375 struct qeth_arp_query_info *qinfo = reply->param; 4376 struct qeth_ipacmd_setadpparms *adp_cmd; 4377 unsigned int data_len; 4378 void *snmp_data; 4379 4380 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4381 4382 if (cmd->hdr.return_code) { 4383 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4384 return -EIO; 4385 } 4386 if (cmd->data.setadapterparms.hdr.return_code) { 4387 cmd->hdr.return_code = 4388 cmd->data.setadapterparms.hdr.return_code; 4389 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4390 return -EIO; 4391 } 4392 4393 adp_cmd = &cmd->data.setadapterparms; 4394 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr); 4395 if (adp_cmd->hdr.seq_no == 1) { 4396 snmp_data = &adp_cmd->data.snmp; 4397 } else { 4398 snmp_data = &adp_cmd->data.snmp.request; 4399 data_len -= offsetof(struct qeth_snmp_cmd, request); 4400 } 4401 4402 /* check if there is enough room in userspace */ 4403 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4404 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC); 4405 return -ENOSPC; 4406 } 4407 QETH_CARD_TEXT_(card, 4, "snore%i", 4408 cmd->data.setadapterparms.hdr.used_total); 4409 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4410 cmd->data.setadapterparms.hdr.seq_no); 4411 /*copy entries to user buffer*/ 4412 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len); 4413 qinfo->udata_offset += data_len; 4414 4415 if (cmd->data.setadapterparms.hdr.seq_no < 4416 cmd->data.setadapterparms.hdr.used_total) 4417 return 1; 4418 return 0; 4419 } 4420 4421 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4422 { 4423 struct qeth_snmp_ureq __user *ureq; 4424 struct qeth_cmd_buffer *iob; 4425 unsigned int req_len; 4426 struct qeth_arp_query_info qinfo = {0, }; 4427 int rc = 0; 4428 4429 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4430 4431 if (IS_VM_NIC(card)) 4432 return -EOPNOTSUPP; 4433 4434 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4435 IS_LAYER3(card)) 4436 return -EOPNOTSUPP; 4437 4438 ureq = (struct qeth_snmp_ureq __user *) udata; 4439 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) || 4440 get_user(req_len, &ureq->hdr.req_len)) 4441 return -EFAULT; 4442 4443 /* Sanitize user input, to avoid overflows in iob size calculation: */ 4444 if (req_len > QETH_BUFSIZE) 4445 return -EINVAL; 4446 4447 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len); 4448 if (!iob) 4449 return -ENOMEM; 4450 4451 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp, 4452 &ureq->cmd, req_len)) { 4453 qeth_put_cmd(iob); 4454 return -EFAULT; 4455 } 4456 4457 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4458 if (!qinfo.udata) { 4459 qeth_put_cmd(iob); 4460 return -ENOMEM; 4461 } 4462 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4463 4464 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo); 4465 if (rc) 4466 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n", 4467 CARD_DEVID(card), rc); 4468 else { 4469 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4470 rc = -EFAULT; 4471 } 4472 4473 kfree(qinfo.udata); 4474 return rc; 4475 } 4476 4477 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4478 struct qeth_reply *reply, unsigned long data) 4479 { 4480 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4481 struct qeth_qoat_priv *priv; 4482 char *resdata; 4483 int resdatalen; 4484 4485 QETH_CARD_TEXT(card, 3, "qoatcb"); 4486 if (qeth_setadpparms_inspect_rc(cmd)) 4487 return -EIO; 4488 4489 priv = (struct qeth_qoat_priv *)reply->param; 4490 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4491 resdata = (char *)data + 28; 4492 4493 if (resdatalen > (priv->buffer_len - priv->response_len)) 4494 return -ENOSPC; 4495 4496 memcpy((priv->buffer + priv->response_len), resdata, 4497 resdatalen); 4498 priv->response_len += resdatalen; 4499 4500 if (cmd->data.setadapterparms.hdr.seq_no < 4501 cmd->data.setadapterparms.hdr.used_total) 4502 return 1; 4503 return 0; 4504 } 4505 4506 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4507 { 4508 int rc = 0; 4509 struct qeth_cmd_buffer *iob; 4510 struct qeth_ipa_cmd *cmd; 4511 struct qeth_query_oat *oat_req; 4512 struct qeth_query_oat_data oat_data; 4513 struct qeth_qoat_priv priv; 4514 void __user *tmp; 4515 4516 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4517 4518 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4519 rc = -EOPNOTSUPP; 4520 goto out; 4521 } 4522 4523 if (copy_from_user(&oat_data, udata, 4524 sizeof(struct qeth_query_oat_data))) { 4525 rc = -EFAULT; 4526 goto out; 4527 } 4528 4529 priv.buffer_len = oat_data.buffer_len; 4530 priv.response_len = 0; 4531 priv.buffer = vzalloc(oat_data.buffer_len); 4532 if (!priv.buffer) { 4533 rc = -ENOMEM; 4534 goto out; 4535 } 4536 4537 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4538 SETADP_DATA_SIZEOF(query_oat)); 4539 if (!iob) { 4540 rc = -ENOMEM; 4541 goto out_free; 4542 } 4543 cmd = __ipa_cmd(iob); 4544 oat_req = &cmd->data.setadapterparms.data.query_oat; 4545 oat_req->subcmd_code = oat_data.command; 4546 4547 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4548 &priv); 4549 if (!rc) { 4550 if (is_compat_task()) 4551 tmp = compat_ptr(oat_data.ptr); 4552 else 4553 tmp = (void __user *)(unsigned long)oat_data.ptr; 4554 4555 if (copy_to_user(tmp, priv.buffer, 4556 priv.response_len)) { 4557 rc = -EFAULT; 4558 goto out_free; 4559 } 4560 4561 oat_data.response_len = priv.response_len; 4562 4563 if (copy_to_user(udata, &oat_data, 4564 sizeof(struct qeth_query_oat_data))) 4565 rc = -EFAULT; 4566 } 4567 4568 out_free: 4569 vfree(priv.buffer); 4570 out: 4571 return rc; 4572 } 4573 4574 static int qeth_query_card_info_cb(struct qeth_card *card, 4575 struct qeth_reply *reply, unsigned long data) 4576 { 4577 struct carrier_info *carrier_info = (struct carrier_info *)reply->param; 4578 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4579 struct qeth_query_card_info *card_info; 4580 4581 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4582 if (qeth_setadpparms_inspect_rc(cmd)) 4583 return -EIO; 4584 4585 card_info = &cmd->data.setadapterparms.data.card_info; 4586 carrier_info->card_type = card_info->card_type; 4587 carrier_info->port_mode = card_info->port_mode; 4588 carrier_info->port_speed = card_info->port_speed; 4589 return 0; 4590 } 4591 4592 int qeth_query_card_info(struct qeth_card *card, 4593 struct carrier_info *carrier_info) 4594 { 4595 struct qeth_cmd_buffer *iob; 4596 4597 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4598 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4599 return -EOPNOTSUPP; 4600 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0); 4601 if (!iob) 4602 return -ENOMEM; 4603 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4604 (void *)carrier_info); 4605 } 4606 4607 /** 4608 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4609 * @card: pointer to a qeth_card 4610 * 4611 * Returns 4612 * 0, if a MAC address has been set for the card's netdevice 4613 * a return code, for various error conditions 4614 */ 4615 int qeth_vm_request_mac(struct qeth_card *card) 4616 { 4617 struct diag26c_mac_resp *response; 4618 struct diag26c_mac_req *request; 4619 struct ccw_dev_id id; 4620 int rc; 4621 4622 QETH_CARD_TEXT(card, 2, "vmreqmac"); 4623 4624 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4625 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4626 if (!request || !response) { 4627 rc = -ENOMEM; 4628 goto out; 4629 } 4630 4631 ccw_device_get_id(CARD_DDEV(card), &id); 4632 request->resp_buf_len = sizeof(*response); 4633 request->resp_version = DIAG26C_VERSION2; 4634 request->op_code = DIAG26C_GET_MAC; 4635 request->devno = id.devno; 4636 4637 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4638 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4639 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4640 if (rc) 4641 goto out; 4642 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4643 4644 if (request->resp_buf_len < sizeof(*response) || 4645 response->version != request->resp_version) { 4646 rc = -EIO; 4647 QETH_CARD_TEXT(card, 2, "badresp"); 4648 QETH_CARD_HEX(card, 2, &request->resp_buf_len, 4649 sizeof(request->resp_buf_len)); 4650 } else if (!is_valid_ether_addr(response->mac)) { 4651 rc = -EINVAL; 4652 QETH_CARD_TEXT(card, 2, "badmac"); 4653 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN); 4654 } else { 4655 ether_addr_copy(card->dev->dev_addr, response->mac); 4656 } 4657 4658 out: 4659 kfree(response); 4660 kfree(request); 4661 return rc; 4662 } 4663 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4664 4665 static void qeth_determine_capabilities(struct qeth_card *card) 4666 { 4667 int rc; 4668 struct ccw_device *ddev; 4669 int ddev_offline = 0; 4670 4671 QETH_CARD_TEXT(card, 2, "detcapab"); 4672 ddev = CARD_DDEV(card); 4673 if (!ddev->online) { 4674 ddev_offline = 1; 4675 rc = ccw_device_set_online(ddev); 4676 if (rc) { 4677 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 4678 goto out; 4679 } 4680 } 4681 4682 rc = qeth_read_conf_data(card); 4683 if (rc) { 4684 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n", 4685 CARD_DEVID(card), rc); 4686 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 4687 goto out_offline; 4688 } 4689 4690 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4691 if (rc) 4692 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 4693 4694 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt); 4695 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1); 4696 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2); 4697 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3); 4698 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt); 4699 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4700 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4701 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4702 dev_info(&card->gdev->dev, 4703 "Completion Queueing supported\n"); 4704 } else { 4705 card->options.cq = QETH_CQ_NOTAVAILABLE; 4706 } 4707 4708 4709 out_offline: 4710 if (ddev_offline == 1) 4711 ccw_device_set_offline(ddev); 4712 out: 4713 return; 4714 } 4715 4716 static void qeth_qdio_establish_cq(struct qeth_card *card, 4717 struct qdio_buffer **in_sbal_ptrs, 4718 void (**queue_start_poll) 4719 (struct ccw_device *, int, 4720 unsigned long)) 4721 { 4722 int i; 4723 4724 if (card->options.cq == QETH_CQ_ENABLED) { 4725 int offset = QDIO_MAX_BUFFERS_PER_Q * 4726 (card->qdio.no_in_queues - 1); 4727 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4728 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4729 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4730 } 4731 4732 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4733 } 4734 } 4735 4736 static int qeth_qdio_establish(struct qeth_card *card) 4737 { 4738 struct qdio_initialize init_data; 4739 char *qib_param_field; 4740 struct qdio_buffer **in_sbal_ptrs; 4741 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4742 struct qdio_buffer **out_sbal_ptrs; 4743 int i, j, k; 4744 int rc = 0; 4745 4746 QETH_CARD_TEXT(card, 2, "qdioest"); 4747 4748 qib_param_field = kzalloc(FIELD_SIZEOF(struct qib, parm), GFP_KERNEL); 4749 if (!qib_param_field) { 4750 rc = -ENOMEM; 4751 goto out_free_nothing; 4752 } 4753 4754 qeth_create_qib_param_field(card, qib_param_field); 4755 qeth_create_qib_param_field_blkt(card, qib_param_field); 4756 4757 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q, 4758 sizeof(void *), 4759 GFP_KERNEL); 4760 if (!in_sbal_ptrs) { 4761 rc = -ENOMEM; 4762 goto out_free_qib_param; 4763 } 4764 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4765 in_sbal_ptrs[i] = (struct qdio_buffer *) 4766 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 4767 } 4768 4769 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), 4770 GFP_KERNEL); 4771 if (!queue_start_poll) { 4772 rc = -ENOMEM; 4773 goto out_free_in_sbals; 4774 } 4775 for (i = 0; i < card->qdio.no_in_queues; ++i) 4776 queue_start_poll[i] = qeth_qdio_start_poll; 4777 4778 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 4779 4780 out_sbal_ptrs = 4781 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q, 4782 sizeof(void *), 4783 GFP_KERNEL); 4784 if (!out_sbal_ptrs) { 4785 rc = -ENOMEM; 4786 goto out_free_queue_start_poll; 4787 } 4788 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 4789 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 4790 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 4791 card->qdio.out_qs[i]->bufs[j]->buffer); 4792 } 4793 4794 memset(&init_data, 0, sizeof(struct qdio_initialize)); 4795 init_data.cdev = CARD_DDEV(card); 4796 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT : 4797 QDIO_QETH_QFMT; 4798 init_data.qib_param_field_format = 0; 4799 init_data.qib_param_field = qib_param_field; 4800 init_data.no_input_qs = card->qdio.no_in_queues; 4801 init_data.no_output_qs = card->qdio.no_out_queues; 4802 init_data.input_handler = qeth_qdio_input_handler; 4803 init_data.output_handler = qeth_qdio_output_handler; 4804 init_data.queue_start_poll_array = queue_start_poll; 4805 init_data.int_parm = (unsigned long) card; 4806 init_data.input_sbal_addr_array = in_sbal_ptrs; 4807 init_data.output_sbal_addr_array = out_sbal_ptrs; 4808 init_data.output_sbal_state_array = card->qdio.out_bufstates; 4809 init_data.scan_threshold = IS_IQD(card) ? 0 : 32; 4810 4811 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 4812 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 4813 rc = qdio_allocate(&init_data); 4814 if (rc) { 4815 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4816 goto out; 4817 } 4818 rc = qdio_establish(&init_data); 4819 if (rc) { 4820 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 4821 qdio_free(CARD_DDEV(card)); 4822 } 4823 } 4824 4825 switch (card->options.cq) { 4826 case QETH_CQ_ENABLED: 4827 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 4828 break; 4829 case QETH_CQ_DISABLED: 4830 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 4831 break; 4832 default: 4833 break; 4834 } 4835 out: 4836 kfree(out_sbal_ptrs); 4837 out_free_queue_start_poll: 4838 kfree(queue_start_poll); 4839 out_free_in_sbals: 4840 kfree(in_sbal_ptrs); 4841 out_free_qib_param: 4842 kfree(qib_param_field); 4843 out_free_nothing: 4844 return rc; 4845 } 4846 4847 static void qeth_core_free_card(struct qeth_card *card) 4848 { 4849 QETH_CARD_TEXT(card, 2, "freecrd"); 4850 qeth_clean_channel(&card->read); 4851 qeth_clean_channel(&card->write); 4852 qeth_clean_channel(&card->data); 4853 qeth_put_cmd(card->read_cmd); 4854 destroy_workqueue(card->event_wq); 4855 qeth_free_qdio_queues(card); 4856 unregister_service_level(&card->qeth_service_level); 4857 dev_set_drvdata(&card->gdev->dev, NULL); 4858 kfree(card); 4859 } 4860 4861 void qeth_trace_features(struct qeth_card *card) 4862 { 4863 QETH_CARD_TEXT(card, 2, "features"); 4864 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 4865 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 4866 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 4867 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 4868 sizeof(card->info.diagass_support)); 4869 } 4870 EXPORT_SYMBOL_GPL(qeth_trace_features); 4871 4872 static struct ccw_device_id qeth_ids[] = { 4873 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 4874 .driver_info = QETH_CARD_TYPE_OSD}, 4875 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 4876 .driver_info = QETH_CARD_TYPE_IQD}, 4877 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 4878 .driver_info = QETH_CARD_TYPE_OSN}, 4879 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 4880 .driver_info = QETH_CARD_TYPE_OSM}, 4881 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 4882 .driver_info = QETH_CARD_TYPE_OSX}, 4883 {}, 4884 }; 4885 MODULE_DEVICE_TABLE(ccw, qeth_ids); 4886 4887 static struct ccw_driver qeth_ccw_driver = { 4888 .driver = { 4889 .owner = THIS_MODULE, 4890 .name = "qeth", 4891 }, 4892 .ids = qeth_ids, 4893 .probe = ccwgroup_probe_ccwdev, 4894 .remove = ccwgroup_remove_ccwdev, 4895 }; 4896 4897 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok) 4898 { 4899 int retries = 3; 4900 int rc; 4901 4902 QETH_CARD_TEXT(card, 2, "hrdsetup"); 4903 atomic_set(&card->force_alloc_skb, 0); 4904 rc = qeth_update_from_chp_desc(card); 4905 if (rc) 4906 return rc; 4907 retry: 4908 if (retries < 3) 4909 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n", 4910 CARD_DEVID(card)); 4911 rc = qeth_qdio_clear_card(card, !IS_IQD(card)); 4912 ccw_device_set_offline(CARD_DDEV(card)); 4913 ccw_device_set_offline(CARD_WDEV(card)); 4914 ccw_device_set_offline(CARD_RDEV(card)); 4915 qdio_free(CARD_DDEV(card)); 4916 rc = ccw_device_set_online(CARD_RDEV(card)); 4917 if (rc) 4918 goto retriable; 4919 rc = ccw_device_set_online(CARD_WDEV(card)); 4920 if (rc) 4921 goto retriable; 4922 rc = ccw_device_set_online(CARD_DDEV(card)); 4923 if (rc) 4924 goto retriable; 4925 retriable: 4926 if (rc == -ERESTARTSYS) { 4927 QETH_CARD_TEXT(card, 2, "break1"); 4928 return rc; 4929 } else if (rc) { 4930 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 4931 if (--retries < 0) 4932 goto out; 4933 else 4934 goto retry; 4935 } 4936 qeth_determine_capabilities(card); 4937 qeth_init_tokens(card); 4938 qeth_init_func_level(card); 4939 4940 rc = qeth_idx_activate_read_channel(card); 4941 if (rc == -EINTR) { 4942 QETH_CARD_TEXT(card, 2, "break2"); 4943 return rc; 4944 } else if (rc) { 4945 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 4946 if (--retries < 0) 4947 goto out; 4948 else 4949 goto retry; 4950 } 4951 4952 rc = qeth_idx_activate_write_channel(card); 4953 if (rc == -EINTR) { 4954 QETH_CARD_TEXT(card, 2, "break3"); 4955 return rc; 4956 } else if (rc) { 4957 QETH_CARD_TEXT_(card, 2, "4err%d", rc); 4958 if (--retries < 0) 4959 goto out; 4960 else 4961 goto retry; 4962 } 4963 card->read_or_write_problem = 0; 4964 rc = qeth_mpc_initialize(card); 4965 if (rc) { 4966 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 4967 goto out; 4968 } 4969 4970 rc = qeth_send_startlan(card); 4971 if (rc) { 4972 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 4973 if (rc == -ENETDOWN) { 4974 dev_warn(&card->gdev->dev, "The LAN is offline\n"); 4975 *carrier_ok = false; 4976 } else { 4977 goto out; 4978 } 4979 } else { 4980 *carrier_ok = true; 4981 } 4982 4983 card->options.ipa4.supported_funcs = 0; 4984 card->options.ipa6.supported_funcs = 0; 4985 card->options.adp.supported_funcs = 0; 4986 card->options.sbp.supported_funcs = 0; 4987 card->info.diagass_support = 0; 4988 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 4989 if (rc == -ENOMEM) 4990 goto out; 4991 if (qeth_is_supported(card, IPA_IPV6)) { 4992 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 4993 if (rc == -ENOMEM) 4994 goto out; 4995 } 4996 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 4997 rc = qeth_query_setadapterparms(card); 4998 if (rc < 0) { 4999 QETH_CARD_TEXT_(card, 2, "7err%d", rc); 5000 goto out; 5001 } 5002 } 5003 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5004 rc = qeth_query_setdiagass(card); 5005 if (rc < 0) { 5006 QETH_CARD_TEXT_(card, 2, "8err%d", rc); 5007 goto out; 5008 } 5009 } 5010 5011 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) || 5012 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))) 5013 card->info.hwtrap = 0; 5014 5015 rc = qeth_set_access_ctrl_online(card, 0); 5016 if (rc) 5017 goto out; 5018 5019 return 0; 5020 out: 5021 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5022 "an error on the device\n"); 5023 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n", 5024 CARD_DEVID(card), rc); 5025 return rc; 5026 } 5027 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5028 5029 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5030 struct sk_buff *skb, int offset, int data_len) 5031 { 5032 struct page *page = virt_to_page(element->addr); 5033 unsigned int next_frag; 5034 5035 /* first fill the linear space */ 5036 if (!skb->len) { 5037 unsigned int linear = min(data_len, skb_tailroom(skb)); 5038 5039 skb_put_data(skb, element->addr + offset, linear); 5040 data_len -= linear; 5041 if (!data_len) 5042 return; 5043 offset += linear; 5044 /* fall through to add page frag for remaining data */ 5045 } 5046 5047 next_frag = skb_shinfo(skb)->nr_frags; 5048 get_page(page); 5049 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5050 } 5051 5052 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5053 { 5054 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5055 } 5056 5057 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5058 struct qeth_qdio_buffer *qethbuffer, 5059 struct qdio_buffer_element **__element, int *__offset, 5060 struct qeth_hdr **hdr) 5061 { 5062 struct qdio_buffer_element *element = *__element; 5063 struct qdio_buffer *buffer = qethbuffer->buffer; 5064 int offset = *__offset; 5065 struct sk_buff *skb; 5066 int skb_len = 0; 5067 void *data_ptr; 5068 int data_len; 5069 int headroom = 0; 5070 int use_rx_sg = 0; 5071 5072 /* qeth_hdr must not cross element boundaries */ 5073 while (element->length < offset + sizeof(struct qeth_hdr)) { 5074 if (qeth_is_last_sbale(element)) 5075 return NULL; 5076 element++; 5077 offset = 0; 5078 } 5079 *hdr = element->addr + offset; 5080 5081 offset += sizeof(struct qeth_hdr); 5082 switch ((*hdr)->hdr.l2.id) { 5083 case QETH_HEADER_TYPE_LAYER2: 5084 skb_len = (*hdr)->hdr.l2.pkt_length; 5085 break; 5086 case QETH_HEADER_TYPE_LAYER3: 5087 skb_len = (*hdr)->hdr.l3.length; 5088 headroom = ETH_HLEN; 5089 break; 5090 case QETH_HEADER_TYPE_OSN: 5091 skb_len = (*hdr)->hdr.osn.pdu_length; 5092 headroom = sizeof(struct qeth_hdr); 5093 break; 5094 default: 5095 break; 5096 } 5097 5098 if (!skb_len) 5099 return NULL; 5100 5101 if (((skb_len >= card->options.rx_sg_cb) && 5102 !IS_OSN(card) && 5103 (!atomic_read(&card->force_alloc_skb))) || 5104 (card->options.cq == QETH_CQ_ENABLED)) 5105 use_rx_sg = 1; 5106 5107 if (use_rx_sg && qethbuffer->rx_skb) { 5108 /* QETH_CQ_ENABLED only: */ 5109 skb = qethbuffer->rx_skb; 5110 qethbuffer->rx_skb = NULL; 5111 } else { 5112 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5113 5114 skb = napi_alloc_skb(&card->napi, linear + headroom); 5115 } 5116 if (!skb) 5117 goto no_mem; 5118 if (headroom) 5119 skb_reserve(skb, headroom); 5120 5121 data_ptr = element->addr + offset; 5122 while (skb_len) { 5123 data_len = min(skb_len, (int)(element->length - offset)); 5124 if (data_len) { 5125 if (use_rx_sg) 5126 qeth_create_skb_frag(element, skb, offset, 5127 data_len); 5128 else 5129 skb_put_data(skb, data_ptr, data_len); 5130 } 5131 skb_len -= data_len; 5132 if (skb_len) { 5133 if (qeth_is_last_sbale(element)) { 5134 QETH_CARD_TEXT(card, 4, "unexeob"); 5135 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5136 dev_kfree_skb_any(skb); 5137 QETH_CARD_STAT_INC(card, rx_errors); 5138 return NULL; 5139 } 5140 element++; 5141 offset = 0; 5142 data_ptr = element->addr; 5143 } else { 5144 offset += data_len; 5145 } 5146 } 5147 *__element = element; 5148 *__offset = offset; 5149 if (use_rx_sg) { 5150 QETH_CARD_STAT_INC(card, rx_sg_skbs); 5151 QETH_CARD_STAT_ADD(card, rx_sg_frags, 5152 skb_shinfo(skb)->nr_frags); 5153 } 5154 return skb; 5155 no_mem: 5156 if (net_ratelimit()) { 5157 QETH_CARD_TEXT(card, 2, "noskbmem"); 5158 } 5159 QETH_CARD_STAT_INC(card, rx_dropped); 5160 return NULL; 5161 } 5162 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5163 5164 int qeth_poll(struct napi_struct *napi, int budget) 5165 { 5166 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5167 int work_done = 0; 5168 struct qeth_qdio_buffer *buffer; 5169 int done; 5170 int new_budget = budget; 5171 5172 while (1) { 5173 if (!card->rx.b_count) { 5174 card->rx.qdio_err = 0; 5175 card->rx.b_count = qdio_get_next_buffers( 5176 card->data.ccwdev, 0, &card->rx.b_index, 5177 &card->rx.qdio_err); 5178 if (card->rx.b_count <= 0) { 5179 card->rx.b_count = 0; 5180 break; 5181 } 5182 card->rx.b_element = 5183 &card->qdio.in_q->bufs[card->rx.b_index] 5184 .buffer->element[0]; 5185 card->rx.e_offset = 0; 5186 } 5187 5188 while (card->rx.b_count) { 5189 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5190 if (!(card->rx.qdio_err && 5191 qeth_check_qdio_errors(card, buffer->buffer, 5192 card->rx.qdio_err, "qinerr"))) 5193 work_done += 5194 card->discipline->process_rx_buffer( 5195 card, new_budget, &done); 5196 else 5197 done = 1; 5198 5199 if (done) { 5200 QETH_CARD_STAT_INC(card, rx_bufs); 5201 qeth_put_buffer_pool_entry(card, 5202 buffer->pool_entry); 5203 qeth_queue_input_buffer(card, card->rx.b_index); 5204 card->rx.b_count--; 5205 if (card->rx.b_count) { 5206 card->rx.b_index = 5207 QDIO_BUFNR(card->rx.b_index + 1); 5208 card->rx.b_element = 5209 &card->qdio.in_q 5210 ->bufs[card->rx.b_index] 5211 .buffer->element[0]; 5212 card->rx.e_offset = 0; 5213 } 5214 } 5215 5216 if (work_done >= budget) 5217 goto out; 5218 else 5219 new_budget = budget - work_done; 5220 } 5221 } 5222 5223 if (napi_complete_done(napi, work_done) && 5224 qdio_start_irq(CARD_DDEV(card), 0)) 5225 napi_schedule(napi); 5226 out: 5227 return work_done; 5228 } 5229 EXPORT_SYMBOL_GPL(qeth_poll); 5230 5231 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue, 5232 unsigned int bidx, bool error, int budget) 5233 { 5234 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx]; 5235 u8 sflags = buffer->buffer->element[15].sflags; 5236 struct qeth_card *card = queue->card; 5237 5238 if (queue->bufstates && (queue->bufstates[bidx].flags & 5239 QDIO_OUTBUF_STATE_FLAG_PENDING)) { 5240 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 5241 5242 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 5243 QETH_QDIO_BUF_PENDING) == 5244 QETH_QDIO_BUF_PRIMED) 5245 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING); 5246 5247 QETH_CARD_TEXT_(card, 5, "pel%u", bidx); 5248 5249 /* prepare the queue slot for re-use: */ 5250 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements); 5251 if (qeth_init_qdio_out_buf(queue, bidx)) { 5252 QETH_CARD_TEXT(card, 2, "outofbuf"); 5253 qeth_schedule_recovery(card); 5254 } 5255 5256 return; 5257 } 5258 5259 if (card->options.cq == QETH_CQ_ENABLED) 5260 qeth_notify_skbs(queue, buffer, 5261 qeth_compute_cq_notification(sflags, 0)); 5262 qeth_clear_output_buffer(queue, buffer, error, budget); 5263 } 5264 5265 static int qeth_tx_poll(struct napi_struct *napi, int budget) 5266 { 5267 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi); 5268 unsigned int queue_no = queue->queue_no; 5269 struct qeth_card *card = queue->card; 5270 struct net_device *dev = card->dev; 5271 unsigned int work_done = 0; 5272 struct netdev_queue *txq; 5273 5274 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no)); 5275 5276 while (1) { 5277 unsigned int start, error, i; 5278 unsigned int packets = 0; 5279 unsigned int bytes = 0; 5280 int completed; 5281 5282 if (qeth_out_queue_is_empty(queue)) { 5283 napi_complete(napi); 5284 return 0; 5285 } 5286 5287 /* Give the CPU a breather: */ 5288 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) { 5289 QETH_TXQ_STAT_INC(queue, completion_yield); 5290 if (napi_complete_done(napi, 0)) 5291 napi_schedule(napi); 5292 return 0; 5293 } 5294 5295 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false, 5296 &start, &error); 5297 if (completed <= 0) { 5298 /* Ensure we see TX completion for pending work: */ 5299 if (napi_complete_done(napi, 0)) 5300 qeth_tx_arm_timer(queue); 5301 return 0; 5302 } 5303 5304 for (i = start; i < start + completed; i++) { 5305 struct qeth_qdio_out_buffer *buffer; 5306 unsigned int bidx = QDIO_BUFNR(i); 5307 5308 buffer = queue->bufs[bidx]; 5309 packets += skb_queue_len(&buffer->skb_list); 5310 bytes += buffer->bytes; 5311 5312 qeth_handle_send_error(card, buffer, error); 5313 qeth_iqd_tx_complete(queue, bidx, error, budget); 5314 qeth_cleanup_handled_pending(queue, bidx, false); 5315 } 5316 5317 netdev_tx_completed_queue(txq, packets, bytes); 5318 atomic_sub(completed, &queue->used_buffers); 5319 work_done += completed; 5320 5321 /* xmit may have observed the full-condition, but not yet 5322 * stopped the txq. In which case the code below won't trigger. 5323 * So before returning, xmit will re-check the txq's fill level 5324 * and wake it up if needed. 5325 */ 5326 if (netif_tx_queue_stopped(txq) && 5327 !qeth_out_queue_is_full(queue)) 5328 netif_tx_wake_queue(txq); 5329 } 5330 } 5331 5332 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5333 { 5334 if (!cmd->hdr.return_code) 5335 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5336 return cmd->hdr.return_code; 5337 } 5338 5339 static int qeth_setassparms_get_caps_cb(struct qeth_card *card, 5340 struct qeth_reply *reply, 5341 unsigned long data) 5342 { 5343 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5344 struct qeth_ipa_caps *caps = reply->param; 5345 5346 if (qeth_setassparms_inspect_rc(cmd)) 5347 return -EIO; 5348 5349 caps->supported = cmd->data.setassparms.data.caps.supported; 5350 caps->enabled = cmd->data.setassparms.data.caps.enabled; 5351 return 0; 5352 } 5353 5354 int qeth_setassparms_cb(struct qeth_card *card, 5355 struct qeth_reply *reply, unsigned long data) 5356 { 5357 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5358 5359 QETH_CARD_TEXT(card, 4, "defadpcb"); 5360 5361 if (cmd->hdr.return_code) 5362 return -EIO; 5363 5364 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5365 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5366 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5367 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5368 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5369 return 0; 5370 } 5371 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5372 5373 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5374 enum qeth_ipa_funcs ipa_func, 5375 u16 cmd_code, 5376 unsigned int data_length, 5377 enum qeth_prot_versions prot) 5378 { 5379 struct qeth_ipacmd_setassparms *setassparms; 5380 struct qeth_ipacmd_setassparms_hdr *hdr; 5381 struct qeth_cmd_buffer *iob; 5382 5383 QETH_CARD_TEXT(card, 4, "getasscm"); 5384 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot, 5385 data_length + 5386 offsetof(struct qeth_ipacmd_setassparms, 5387 data)); 5388 if (!iob) 5389 return NULL; 5390 5391 setassparms = &__ipa_cmd(iob)->data.setassparms; 5392 setassparms->assist_no = ipa_func; 5393 5394 hdr = &setassparms->hdr; 5395 hdr->length = sizeof(*hdr) + data_length; 5396 hdr->command_code = cmd_code; 5397 return iob; 5398 } 5399 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5400 5401 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 5402 enum qeth_ipa_funcs ipa_func, 5403 u16 cmd_code, u32 *data, 5404 enum qeth_prot_versions prot) 5405 { 5406 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0; 5407 struct qeth_cmd_buffer *iob; 5408 5409 QETH_CARD_TEXT_(card, 4, "simassp%i", prot); 5410 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); 5411 if (!iob) 5412 return -ENOMEM; 5413 5414 if (data) 5415 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data; 5416 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL); 5417 } 5418 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 5419 5420 static void qeth_unregister_dbf_views(void) 5421 { 5422 int x; 5423 for (x = 0; x < QETH_DBF_INFOS; x++) { 5424 debug_unregister(qeth_dbf[x].id); 5425 qeth_dbf[x].id = NULL; 5426 } 5427 } 5428 5429 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5430 { 5431 char dbf_txt_buf[32]; 5432 va_list args; 5433 5434 if (!debug_level_enabled(id, level)) 5435 return; 5436 va_start(args, fmt); 5437 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5438 va_end(args); 5439 debug_text_event(id, level, dbf_txt_buf); 5440 } 5441 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5442 5443 static int qeth_register_dbf_views(void) 5444 { 5445 int ret; 5446 int x; 5447 5448 for (x = 0; x < QETH_DBF_INFOS; x++) { 5449 /* register the areas */ 5450 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5451 qeth_dbf[x].pages, 5452 qeth_dbf[x].areas, 5453 qeth_dbf[x].len); 5454 if (qeth_dbf[x].id == NULL) { 5455 qeth_unregister_dbf_views(); 5456 return -ENOMEM; 5457 } 5458 5459 /* register a view */ 5460 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5461 if (ret) { 5462 qeth_unregister_dbf_views(); 5463 return ret; 5464 } 5465 5466 /* set a passing level */ 5467 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5468 } 5469 5470 return 0; 5471 } 5472 5473 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */ 5474 5475 int qeth_core_load_discipline(struct qeth_card *card, 5476 enum qeth_discipline_id discipline) 5477 { 5478 mutex_lock(&qeth_mod_mutex); 5479 switch (discipline) { 5480 case QETH_DISCIPLINE_LAYER3: 5481 card->discipline = try_then_request_module( 5482 symbol_get(qeth_l3_discipline), "qeth_l3"); 5483 break; 5484 case QETH_DISCIPLINE_LAYER2: 5485 card->discipline = try_then_request_module( 5486 symbol_get(qeth_l2_discipline), "qeth_l2"); 5487 break; 5488 default: 5489 break; 5490 } 5491 mutex_unlock(&qeth_mod_mutex); 5492 5493 if (!card->discipline) { 5494 dev_err(&card->gdev->dev, "There is no kernel module to " 5495 "support discipline %d\n", discipline); 5496 return -EINVAL; 5497 } 5498 5499 card->options.layer = discipline; 5500 return 0; 5501 } 5502 5503 void qeth_core_free_discipline(struct qeth_card *card) 5504 { 5505 if (IS_LAYER2(card)) 5506 symbol_put(qeth_l2_discipline); 5507 else 5508 symbol_put(qeth_l3_discipline); 5509 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 5510 card->discipline = NULL; 5511 } 5512 5513 const struct device_type qeth_generic_devtype = { 5514 .name = "qeth_generic", 5515 .groups = qeth_generic_attr_groups, 5516 }; 5517 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5518 5519 static const struct device_type qeth_osn_devtype = { 5520 .name = "qeth_osn", 5521 .groups = qeth_osn_attr_groups, 5522 }; 5523 5524 #define DBF_NAME_LEN 20 5525 5526 struct qeth_dbf_entry { 5527 char dbf_name[DBF_NAME_LEN]; 5528 debug_info_t *dbf_info; 5529 struct list_head dbf_list; 5530 }; 5531 5532 static LIST_HEAD(qeth_dbf_list); 5533 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5534 5535 static debug_info_t *qeth_get_dbf_entry(char *name) 5536 { 5537 struct qeth_dbf_entry *entry; 5538 debug_info_t *rc = NULL; 5539 5540 mutex_lock(&qeth_dbf_list_mutex); 5541 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5542 if (strcmp(entry->dbf_name, name) == 0) { 5543 rc = entry->dbf_info; 5544 break; 5545 } 5546 } 5547 mutex_unlock(&qeth_dbf_list_mutex); 5548 return rc; 5549 } 5550 5551 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5552 { 5553 struct qeth_dbf_entry *new_entry; 5554 5555 card->debug = debug_register(name, 2, 1, 8); 5556 if (!card->debug) { 5557 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5558 goto err; 5559 } 5560 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5561 goto err_dbg; 5562 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5563 if (!new_entry) 5564 goto err_dbg; 5565 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5566 new_entry->dbf_info = card->debug; 5567 mutex_lock(&qeth_dbf_list_mutex); 5568 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5569 mutex_unlock(&qeth_dbf_list_mutex); 5570 5571 return 0; 5572 5573 err_dbg: 5574 debug_unregister(card->debug); 5575 err: 5576 return -ENOMEM; 5577 } 5578 5579 static void qeth_clear_dbf_list(void) 5580 { 5581 struct qeth_dbf_entry *entry, *tmp; 5582 5583 mutex_lock(&qeth_dbf_list_mutex); 5584 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5585 list_del(&entry->dbf_list); 5586 debug_unregister(entry->dbf_info); 5587 kfree(entry); 5588 } 5589 mutex_unlock(&qeth_dbf_list_mutex); 5590 } 5591 5592 static struct net_device *qeth_alloc_netdev(struct qeth_card *card) 5593 { 5594 struct net_device *dev; 5595 5596 switch (card->info.type) { 5597 case QETH_CARD_TYPE_IQD: 5598 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN, 5599 ether_setup, QETH_MAX_QUEUES, 1); 5600 break; 5601 case QETH_CARD_TYPE_OSM: 5602 dev = alloc_etherdev(0); 5603 break; 5604 case QETH_CARD_TYPE_OSN: 5605 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); 5606 break; 5607 default: 5608 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1); 5609 } 5610 5611 if (!dev) 5612 return NULL; 5613 5614 dev->ml_priv = card; 5615 dev->watchdog_timeo = QETH_TX_TIMEOUT; 5616 dev->min_mtu = IS_OSN(card) ? 64 : 576; 5617 /* initialized when device first goes online: */ 5618 dev->max_mtu = 0; 5619 dev->mtu = 0; 5620 SET_NETDEV_DEV(dev, &card->gdev->dev); 5621 netif_carrier_off(dev); 5622 5623 if (IS_OSN(card)) { 5624 dev->ethtool_ops = &qeth_osn_ethtool_ops; 5625 } else { 5626 dev->ethtool_ops = &qeth_ethtool_ops; 5627 dev->priv_flags &= ~IFF_TX_SKB_SHARING; 5628 dev->hw_features |= NETIF_F_SG; 5629 dev->vlan_features |= NETIF_F_SG; 5630 if (IS_IQD(card)) { 5631 dev->features |= NETIF_F_SG; 5632 if (netif_set_real_num_tx_queues(dev, 5633 QETH_IQD_MIN_TXQ)) { 5634 free_netdev(dev); 5635 return NULL; 5636 } 5637 } 5638 } 5639 5640 return dev; 5641 } 5642 5643 struct net_device *qeth_clone_netdev(struct net_device *orig) 5644 { 5645 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv); 5646 5647 if (!clone) 5648 return NULL; 5649 5650 clone->dev_port = orig->dev_port; 5651 return clone; 5652 } 5653 5654 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5655 { 5656 struct qeth_card *card; 5657 struct device *dev; 5658 int rc; 5659 enum qeth_discipline_id enforced_disc; 5660 char dbf_name[DBF_NAME_LEN]; 5661 5662 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5663 5664 dev = &gdev->dev; 5665 if (!get_device(dev)) 5666 return -ENODEV; 5667 5668 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5669 5670 card = qeth_alloc_card(gdev); 5671 if (!card) { 5672 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5673 rc = -ENOMEM; 5674 goto err_dev; 5675 } 5676 5677 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5678 dev_name(&gdev->dev)); 5679 card->debug = qeth_get_dbf_entry(dbf_name); 5680 if (!card->debug) { 5681 rc = qeth_add_dbf_entry(card, dbf_name); 5682 if (rc) 5683 goto err_card; 5684 } 5685 5686 qeth_setup_card(card); 5687 card->dev = qeth_alloc_netdev(card); 5688 if (!card->dev) { 5689 rc = -ENOMEM; 5690 goto err_card; 5691 } 5692 5693 card->qdio.no_out_queues = card->dev->num_tx_queues; 5694 rc = qeth_update_from_chp_desc(card); 5695 if (rc) 5696 goto err_chp_desc; 5697 qeth_determine_capabilities(card); 5698 qeth_set_blkt_defaults(card); 5699 5700 enforced_disc = qeth_enforce_discipline(card); 5701 switch (enforced_disc) { 5702 case QETH_DISCIPLINE_UNDETERMINED: 5703 gdev->dev.type = &qeth_generic_devtype; 5704 break; 5705 default: 5706 card->info.layer_enforced = true; 5707 rc = qeth_core_load_discipline(card, enforced_disc); 5708 if (rc) 5709 goto err_load; 5710 5711 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype : 5712 card->discipline->devtype; 5713 rc = card->discipline->setup(card->gdev); 5714 if (rc) 5715 goto err_disc; 5716 break; 5717 } 5718 5719 return 0; 5720 5721 err_disc: 5722 qeth_core_free_discipline(card); 5723 err_load: 5724 err_chp_desc: 5725 free_netdev(card->dev); 5726 err_card: 5727 qeth_core_free_card(card); 5728 err_dev: 5729 put_device(dev); 5730 return rc; 5731 } 5732 5733 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5734 { 5735 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5736 5737 QETH_CARD_TEXT(card, 2, "removedv"); 5738 5739 if (card->discipline) { 5740 card->discipline->remove(gdev); 5741 qeth_core_free_discipline(card); 5742 } 5743 5744 free_netdev(card->dev); 5745 qeth_core_free_card(card); 5746 put_device(&gdev->dev); 5747 } 5748 5749 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5750 { 5751 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5752 int rc = 0; 5753 enum qeth_discipline_id def_discipline; 5754 5755 if (!card->discipline) { 5756 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : 5757 QETH_DISCIPLINE_LAYER2; 5758 rc = qeth_core_load_discipline(card, def_discipline); 5759 if (rc) 5760 goto err; 5761 rc = card->discipline->setup(card->gdev); 5762 if (rc) { 5763 qeth_core_free_discipline(card); 5764 goto err; 5765 } 5766 } 5767 rc = card->discipline->set_online(gdev); 5768 err: 5769 return rc; 5770 } 5771 5772 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5773 { 5774 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5775 return card->discipline->set_offline(gdev); 5776 } 5777 5778 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5779 { 5780 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5781 qeth_set_allowed_threads(card, 0, 1); 5782 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5783 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5784 qeth_qdio_clear_card(card, 0); 5785 qeth_drain_output_queues(card); 5786 qdio_free(CARD_DDEV(card)); 5787 } 5788 5789 static int qeth_suspend(struct ccwgroup_device *gdev) 5790 { 5791 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5792 5793 qeth_set_allowed_threads(card, 0, 1); 5794 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 5795 if (gdev->state == CCWGROUP_OFFLINE) 5796 return 0; 5797 5798 card->discipline->set_offline(gdev); 5799 return 0; 5800 } 5801 5802 static int qeth_resume(struct ccwgroup_device *gdev) 5803 { 5804 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5805 int rc; 5806 5807 rc = card->discipline->set_online(gdev); 5808 5809 qeth_set_allowed_threads(card, 0xffffffff, 0); 5810 if (rc) 5811 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n"); 5812 return rc; 5813 } 5814 5815 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5816 size_t count) 5817 { 5818 int err; 5819 5820 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3, 5821 buf); 5822 5823 return err ? err : count; 5824 } 5825 static DRIVER_ATTR_WO(group); 5826 5827 static struct attribute *qeth_drv_attrs[] = { 5828 &driver_attr_group.attr, 5829 NULL, 5830 }; 5831 static struct attribute_group qeth_drv_attr_group = { 5832 .attrs = qeth_drv_attrs, 5833 }; 5834 static const struct attribute_group *qeth_drv_attr_groups[] = { 5835 &qeth_drv_attr_group, 5836 NULL, 5837 }; 5838 5839 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5840 .driver = { 5841 .groups = qeth_drv_attr_groups, 5842 .owner = THIS_MODULE, 5843 .name = "qeth", 5844 }, 5845 .ccw_driver = &qeth_ccw_driver, 5846 .setup = qeth_core_probe_device, 5847 .remove = qeth_core_remove_device, 5848 .set_online = qeth_core_set_online, 5849 .set_offline = qeth_core_set_offline, 5850 .shutdown = qeth_core_shutdown, 5851 .prepare = NULL, 5852 .complete = NULL, 5853 .freeze = qeth_suspend, 5854 .thaw = qeth_resume, 5855 .restore = qeth_resume, 5856 }; 5857 5858 struct qeth_card *qeth_get_card_by_busid(char *bus_id) 5859 { 5860 struct ccwgroup_device *gdev; 5861 struct qeth_card *card; 5862 5863 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id); 5864 if (!gdev) 5865 return NULL; 5866 5867 card = dev_get_drvdata(&gdev->dev); 5868 put_device(&gdev->dev); 5869 return card; 5870 } 5871 EXPORT_SYMBOL_GPL(qeth_get_card_by_busid); 5872 5873 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5874 { 5875 struct qeth_card *card = dev->ml_priv; 5876 struct mii_ioctl_data *mii_data; 5877 int rc = 0; 5878 5879 if (!card) 5880 return -ENODEV; 5881 5882 switch (cmd) { 5883 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5884 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5885 break; 5886 case SIOC_QETH_GET_CARD_TYPE: 5887 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) && 5888 !IS_VM_NIC(card)) 5889 return 1; 5890 return 0; 5891 case SIOCGMIIPHY: 5892 mii_data = if_mii(rq); 5893 mii_data->phy_id = 0; 5894 break; 5895 case SIOCGMIIREG: 5896 mii_data = if_mii(rq); 5897 if (mii_data->phy_id != 0) 5898 rc = -EINVAL; 5899 else 5900 mii_data->val_out = qeth_mdio_read(dev, 5901 mii_data->phy_id, mii_data->reg_num); 5902 break; 5903 case SIOC_QETH_QUERY_OAT: 5904 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5905 break; 5906 default: 5907 if (card->discipline->do_ioctl) 5908 rc = card->discipline->do_ioctl(dev, rq, cmd); 5909 else 5910 rc = -EOPNOTSUPP; 5911 } 5912 if (rc) 5913 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5914 return rc; 5915 } 5916 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5917 5918 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply, 5919 unsigned long data) 5920 { 5921 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 5922 u32 *features = reply->param; 5923 5924 if (qeth_setassparms_inspect_rc(cmd)) 5925 return -EIO; 5926 5927 *features = cmd->data.setassparms.data.flags_32bit; 5928 return 0; 5929 } 5930 5931 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype, 5932 enum qeth_prot_versions prot) 5933 { 5934 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP, 5935 NULL, prot); 5936 } 5937 5938 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, 5939 enum qeth_prot_versions prot) 5940 { 5941 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; 5942 struct qeth_cmd_buffer *iob; 5943 struct qeth_ipa_caps caps; 5944 u32 features; 5945 int rc; 5946 5947 /* some L3 HW requires combined L3+L4 csum offload: */ 5948 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 && 5949 cstype == IPA_OUTBOUND_CHECKSUM) 5950 required_features |= QETH_IPA_CHECKSUM_IP_HDR; 5951 5952 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0, 5953 prot); 5954 if (!iob) 5955 return -ENOMEM; 5956 5957 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features); 5958 if (rc) 5959 return rc; 5960 5961 if ((required_features & features) != required_features) { 5962 qeth_set_csum_off(card, cstype, prot); 5963 return -EOPNOTSUPP; 5964 } 5965 5966 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 5967 SETASS_DATA_SIZEOF(flags_32bit), 5968 prot); 5969 if (!iob) { 5970 qeth_set_csum_off(card, cstype, prot); 5971 return -ENOMEM; 5972 } 5973 5974 if (features & QETH_IPA_CHECKSUM_LP2LP) 5975 required_features |= QETH_IPA_CHECKSUM_LP2LP; 5976 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features; 5977 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); 5978 if (rc) { 5979 qeth_set_csum_off(card, cstype, prot); 5980 return rc; 5981 } 5982 5983 if (!qeth_ipa_caps_supported(&caps, required_features) || 5984 !qeth_ipa_caps_enabled(&caps, required_features)) { 5985 qeth_set_csum_off(card, cstype, prot); 5986 return -EOPNOTSUPP; 5987 } 5988 5989 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", 5990 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); 5991 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) && 5992 cstype == IPA_OUTBOUND_CHECKSUM) 5993 dev_warn(&card->gdev->dev, 5994 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 5995 QETH_CARD_IFNAME(card)); 5996 return 0; 5997 } 5998 5999 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, 6000 enum qeth_prot_versions prot) 6001 { 6002 return on ? qeth_set_csum_on(card, cstype, prot) : 6003 qeth_set_csum_off(card, cstype, prot); 6004 } 6005 6006 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply, 6007 unsigned long data) 6008 { 6009 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6010 struct qeth_tso_start_data *tso_data = reply->param; 6011 6012 if (qeth_setassparms_inspect_rc(cmd)) 6013 return -EIO; 6014 6015 tso_data->mss = cmd->data.setassparms.data.tso.mss; 6016 tso_data->supported = cmd->data.setassparms.data.tso.supported; 6017 return 0; 6018 } 6019 6020 static int qeth_set_tso_off(struct qeth_card *card, 6021 enum qeth_prot_versions prot) 6022 { 6023 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO, 6024 IPA_CMD_ASS_STOP, NULL, prot); 6025 } 6026 6027 static int qeth_set_tso_on(struct qeth_card *card, 6028 enum qeth_prot_versions prot) 6029 { 6030 struct qeth_tso_start_data tso_data; 6031 struct qeth_cmd_buffer *iob; 6032 struct qeth_ipa_caps caps; 6033 int rc; 6034 6035 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6036 IPA_CMD_ASS_START, 0, prot); 6037 if (!iob) 6038 return -ENOMEM; 6039 6040 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data); 6041 if (rc) 6042 return rc; 6043 6044 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) { 6045 qeth_set_tso_off(card, prot); 6046 return -EOPNOTSUPP; 6047 } 6048 6049 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6050 IPA_CMD_ASS_ENABLE, 6051 SETASS_DATA_SIZEOF(caps), prot); 6052 if (!iob) { 6053 qeth_set_tso_off(card, prot); 6054 return -ENOMEM; 6055 } 6056 6057 /* enable TSO capability */ 6058 __ipa_cmd(iob)->data.setassparms.data.caps.enabled = 6059 QETH_IPA_LARGE_SEND_TCP; 6060 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); 6061 if (rc) { 6062 qeth_set_tso_off(card, prot); 6063 return rc; 6064 } 6065 6066 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) || 6067 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) { 6068 qeth_set_tso_off(card, prot); 6069 return -EOPNOTSUPP; 6070 } 6071 6072 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot, 6073 tso_data.mss); 6074 return 0; 6075 } 6076 6077 static int qeth_set_ipa_tso(struct qeth_card *card, bool on, 6078 enum qeth_prot_versions prot) 6079 { 6080 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot); 6081 } 6082 6083 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) 6084 { 6085 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; 6086 int rc_ipv6; 6087 6088 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6089 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6090 QETH_PROT_IPV4); 6091 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6092 /* no/one Offload Assist available, so the rc is trivial */ 6093 return rc_ipv4; 6094 6095 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6096 QETH_PROT_IPV6); 6097 6098 if (on) 6099 /* enable: success if any Assist is active */ 6100 return (rc_ipv6) ? rc_ipv4 : 0; 6101 6102 /* disable: failure if any Assist is still active */ 6103 return (rc_ipv6) ? rc_ipv6 : rc_ipv4; 6104 } 6105 6106 /** 6107 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features 6108 * @dev: a net_device 6109 */ 6110 void qeth_enable_hw_features(struct net_device *dev) 6111 { 6112 struct qeth_card *card = dev->ml_priv; 6113 netdev_features_t features; 6114 6115 features = dev->features; 6116 /* force-off any feature that might need an IPA sequence. 6117 * netdev_update_features() will restart them. 6118 */ 6119 dev->features &= ~dev->hw_features; 6120 /* toggle VLAN filter, so that VIDs are re-programmed: */ 6121 if (IS_LAYER2(card) && IS_VM_NIC(card)) { 6122 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 6123 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 6124 } 6125 netdev_update_features(dev); 6126 if (features != dev->features) 6127 dev_warn(&card->gdev->dev, 6128 "Device recovery failed to restore all offload features\n"); 6129 } 6130 EXPORT_SYMBOL_GPL(qeth_enable_hw_features); 6131 6132 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6133 { 6134 struct qeth_card *card = dev->ml_priv; 6135 netdev_features_t changed = dev->features ^ features; 6136 int rc = 0; 6137 6138 QETH_CARD_TEXT(card, 2, "setfeat"); 6139 QETH_CARD_HEX(card, 2, &features, sizeof(features)); 6140 6141 if ((changed & NETIF_F_IP_CSUM)) { 6142 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, 6143 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); 6144 if (rc) 6145 changed ^= NETIF_F_IP_CSUM; 6146 } 6147 if (changed & NETIF_F_IPV6_CSUM) { 6148 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, 6149 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); 6150 if (rc) 6151 changed ^= NETIF_F_IPV6_CSUM; 6152 } 6153 if (changed & NETIF_F_RXCSUM) { 6154 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); 6155 if (rc) 6156 changed ^= NETIF_F_RXCSUM; 6157 } 6158 if (changed & NETIF_F_TSO) { 6159 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO, 6160 QETH_PROT_IPV4); 6161 if (rc) 6162 changed ^= NETIF_F_TSO; 6163 } 6164 if (changed & NETIF_F_TSO6) { 6165 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6, 6166 QETH_PROT_IPV6); 6167 if (rc) 6168 changed ^= NETIF_F_TSO6; 6169 } 6170 6171 /* everything changed successfully? */ 6172 if ((dev->features ^ features) == changed) 6173 return 0; 6174 /* something went wrong. save changed features and return error */ 6175 dev->features ^= changed; 6176 return -EIO; 6177 } 6178 EXPORT_SYMBOL_GPL(qeth_set_features); 6179 6180 netdev_features_t qeth_fix_features(struct net_device *dev, 6181 netdev_features_t features) 6182 { 6183 struct qeth_card *card = dev->ml_priv; 6184 6185 QETH_CARD_TEXT(card, 2, "fixfeat"); 6186 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6187 features &= ~NETIF_F_IP_CSUM; 6188 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) 6189 features &= ~NETIF_F_IPV6_CSUM; 6190 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && 6191 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6192 features &= ~NETIF_F_RXCSUM; 6193 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6194 features &= ~NETIF_F_TSO; 6195 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO)) 6196 features &= ~NETIF_F_TSO6; 6197 6198 QETH_CARD_HEX(card, 2, &features, sizeof(features)); 6199 return features; 6200 } 6201 EXPORT_SYMBOL_GPL(qeth_fix_features); 6202 6203 netdev_features_t qeth_features_check(struct sk_buff *skb, 6204 struct net_device *dev, 6205 netdev_features_t features) 6206 { 6207 /* GSO segmentation builds skbs with 6208 * a (small) linear part for the headers, and 6209 * page frags for the data. 6210 * Compared to a linear skb, the header-only part consumes an 6211 * additional buffer element. This reduces buffer utilization, and 6212 * hurts throughput. So compress small segments into one element. 6213 */ 6214 if (netif_needs_gso(skb, features)) { 6215 /* match skb_segment(): */ 6216 unsigned int doffset = skb->data - skb_mac_header(skb); 6217 unsigned int hsize = skb_shinfo(skb)->gso_size; 6218 unsigned int hroom = skb_headroom(skb); 6219 6220 /* linearize only if resulting skb allocations are order-0: */ 6221 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6222 features &= ~NETIF_F_SG; 6223 } 6224 6225 return vlan_features_check(skb, features); 6226 } 6227 EXPORT_SYMBOL_GPL(qeth_features_check); 6228 6229 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 6230 { 6231 struct qeth_card *card = dev->ml_priv; 6232 struct qeth_qdio_out_q *queue; 6233 unsigned int i; 6234 6235 QETH_CARD_TEXT(card, 5, "getstat"); 6236 6237 stats->rx_packets = card->stats.rx_packets; 6238 stats->rx_bytes = card->stats.rx_bytes; 6239 stats->rx_errors = card->stats.rx_errors; 6240 stats->rx_dropped = card->stats.rx_dropped; 6241 stats->multicast = card->stats.rx_multicast; 6242 6243 for (i = 0; i < card->qdio.no_out_queues; i++) { 6244 queue = card->qdio.out_qs[i]; 6245 6246 stats->tx_packets += queue->stats.tx_packets; 6247 stats->tx_bytes += queue->stats.tx_bytes; 6248 stats->tx_errors += queue->stats.tx_errors; 6249 stats->tx_dropped += queue->stats.tx_dropped; 6250 } 6251 } 6252 EXPORT_SYMBOL_GPL(qeth_get_stats64); 6253 6254 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 6255 u8 cast_type, struct net_device *sb_dev) 6256 { 6257 if (cast_type != RTN_UNICAST) 6258 return QETH_IQD_MCAST_TXQ; 6259 return QETH_IQD_MIN_UCAST_TXQ; 6260 } 6261 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue); 6262 6263 int qeth_open(struct net_device *dev) 6264 { 6265 struct qeth_card *card = dev->ml_priv; 6266 6267 QETH_CARD_TEXT(card, 4, "qethopen"); 6268 6269 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0) 6270 return -EIO; 6271 6272 card->data.state = CH_STATE_UP; 6273 netif_tx_start_all_queues(dev); 6274 6275 napi_enable(&card->napi); 6276 local_bh_disable(); 6277 napi_schedule(&card->napi); 6278 if (IS_IQD(card)) { 6279 struct qeth_qdio_out_q *queue; 6280 unsigned int i; 6281 6282 qeth_for_each_output_queue(card, queue, i) { 6283 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll, 6284 QETH_NAPI_WEIGHT); 6285 napi_enable(&queue->napi); 6286 napi_schedule(&queue->napi); 6287 } 6288 } 6289 /* kick-start the NAPI softirq: */ 6290 local_bh_enable(); 6291 return 0; 6292 } 6293 EXPORT_SYMBOL_GPL(qeth_open); 6294 6295 int qeth_stop(struct net_device *dev) 6296 { 6297 struct qeth_card *card = dev->ml_priv; 6298 6299 QETH_CARD_TEXT(card, 4, "qethstop"); 6300 if (IS_IQD(card)) { 6301 struct qeth_qdio_out_q *queue; 6302 unsigned int i; 6303 6304 /* Quiesce the NAPI instances: */ 6305 qeth_for_each_output_queue(card, queue, i) { 6306 napi_disable(&queue->napi); 6307 del_timer_sync(&queue->timer); 6308 } 6309 6310 /* Stop .ndo_start_xmit, might still access queue->napi. */ 6311 netif_tx_disable(dev); 6312 6313 /* Queues may get re-allocated, so remove the NAPIs here. */ 6314 qeth_for_each_output_queue(card, queue, i) 6315 netif_napi_del(&queue->napi); 6316 } else { 6317 netif_tx_disable(dev); 6318 } 6319 6320 napi_disable(&card->napi); 6321 return 0; 6322 } 6323 EXPORT_SYMBOL_GPL(qeth_stop); 6324 6325 static int __init qeth_core_init(void) 6326 { 6327 int rc; 6328 6329 pr_info("loading core functions\n"); 6330 6331 rc = qeth_register_dbf_views(); 6332 if (rc) 6333 goto dbf_err; 6334 qeth_core_root_dev = root_device_register("qeth"); 6335 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6336 if (rc) 6337 goto register_err; 6338 qeth_core_header_cache = 6339 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE, 6340 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE), 6341 0, NULL); 6342 if (!qeth_core_header_cache) { 6343 rc = -ENOMEM; 6344 goto slab_err; 6345 } 6346 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6347 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6348 if (!qeth_qdio_outbuf_cache) { 6349 rc = -ENOMEM; 6350 goto cqslab_err; 6351 } 6352 rc = ccw_driver_register(&qeth_ccw_driver); 6353 if (rc) 6354 goto ccw_err; 6355 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6356 if (rc) 6357 goto ccwgroup_err; 6358 6359 return 0; 6360 6361 ccwgroup_err: 6362 ccw_driver_unregister(&qeth_ccw_driver); 6363 ccw_err: 6364 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6365 cqslab_err: 6366 kmem_cache_destroy(qeth_core_header_cache); 6367 slab_err: 6368 root_device_unregister(qeth_core_root_dev); 6369 register_err: 6370 qeth_unregister_dbf_views(); 6371 dbf_err: 6372 pr_err("Initializing the qeth device driver failed\n"); 6373 return rc; 6374 } 6375 6376 static void __exit qeth_core_exit(void) 6377 { 6378 qeth_clear_dbf_list(); 6379 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6380 ccw_driver_unregister(&qeth_ccw_driver); 6381 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6382 kmem_cache_destroy(qeth_core_header_cache); 6383 root_device_unregister(qeth_core_root_dev); 6384 qeth_unregister_dbf_views(); 6385 pr_info("core functions removed\n"); 6386 } 6387 6388 module_init(qeth_core_init); 6389 module_exit(qeth_core_exit); 6390 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6391 MODULE_DESCRIPTION("qeth core functions"); 6392 MODULE_LICENSE("GPL"); 6393