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/io.h> 21#include <linux/ip.h> 22#include <linux/tcp.h> 23#include <linux/mii.h> 24#include <linux/mm.h> 25#include <linux/kthread.h> 26#include <linux/slab.h> 27#include <linux/if_vlan.h> 28#include <linux/netdevice.h> 29#include <linux/netdev_features.h> 30#include <linux/rcutree.h> 31#include <linux/skbuff.h> 32#include <linux/vmalloc.h> 33 34#include <net/iucv/af_iucv.h> 35#include <net/dsfield.h> 36#include <net/sock.h> 37 38#include <asm/ebcdic.h> 39#include <asm/chpid.h> 40#include <asm/sysinfo.h> 41#include <asm/diag.h> 42#include <asm/cio.h> 43#include <asm/ccwdev.h> 44#include <asm/cpcmd.h> 45 46#include "qeth_core.h" 47 48struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 49 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 50 /* N P A M L V H */ 51 [QETH_DBF_SETUP] = {"qeth_setup", 52 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 53 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 54 &debug_sprintf_view, NULL}, 55 [QETH_DBF_CTRL] = {"qeth_control", 56 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 57}; 58EXPORT_SYMBOL_GPL(qeth_dbf); 59 60static struct kmem_cache *qeth_core_header_cache; 61static struct kmem_cache *qeth_qdio_outbuf_cache; 62static struct kmem_cache *qeth_qaob_cache; 63 64static struct device *qeth_core_root_dev; 65static struct dentry *qeth_debugfs_root; 66static struct lock_class_key qdio_out_skb_queue_key; 67 68static void qeth_issue_next_read_cb(struct qeth_card *card, 69 struct qeth_cmd_buffer *iob, 70 unsigned int data_length); 71static int qeth_qdio_establish(struct qeth_card *); 72static void qeth_free_qdio_queues(struct qeth_card *card); 73 74static const char *qeth_get_cardname(struct qeth_card *card) 75{ 76 if (IS_VM_NIC(card)) { 77 switch (card->info.type) { 78 case QETH_CARD_TYPE_OSD: 79 return " Virtual NIC QDIO"; 80 case QETH_CARD_TYPE_IQD: 81 return " Virtual NIC Hiper"; 82 case QETH_CARD_TYPE_OSM: 83 return " Virtual NIC QDIO - OSM"; 84 case QETH_CARD_TYPE_OSX: 85 return " Virtual NIC QDIO - OSX"; 86 default: 87 return " unknown"; 88 } 89 } else { 90 switch (card->info.type) { 91 case QETH_CARD_TYPE_OSD: 92 return " OSD Express"; 93 case QETH_CARD_TYPE_IQD: 94 return " HiperSockets"; 95 case QETH_CARD_TYPE_OSM: 96 return " OSM QDIO"; 97 case QETH_CARD_TYPE_OSX: 98 return " OSX QDIO"; 99 default: 100 return " unknown"; 101 } 102 } 103 return " n/a"; 104} 105 106/* max length to be returned: 14 */ 107const char *qeth_get_cardname_short(struct qeth_card *card) 108{ 109 if (IS_VM_NIC(card)) { 110 switch (card->info.type) { 111 case QETH_CARD_TYPE_OSD: 112 return "Virt.NIC QDIO"; 113 case QETH_CARD_TYPE_IQD: 114 return "Virt.NIC Hiper"; 115 case QETH_CARD_TYPE_OSM: 116 return "Virt.NIC OSM"; 117 case QETH_CARD_TYPE_OSX: 118 return "Virt.NIC OSX"; 119 default: 120 return "unknown"; 121 } 122 } else { 123 switch (card->info.type) { 124 case QETH_CARD_TYPE_OSD: 125 switch (card->info.link_type) { 126 case QETH_LINK_TYPE_FAST_ETH: 127 return "OSD_100"; 128 case QETH_LINK_TYPE_HSTR: 129 return "HSTR"; 130 case QETH_LINK_TYPE_GBIT_ETH: 131 return "OSD_1000"; 132 case QETH_LINK_TYPE_10GBIT_ETH: 133 return "OSD_10GIG"; 134 case QETH_LINK_TYPE_25GBIT_ETH: 135 return "OSD_25GIG"; 136 case QETH_LINK_TYPE_LANE_ETH100: 137 return "OSD_FE_LANE"; 138 case QETH_LINK_TYPE_LANE_TR: 139 return "OSD_TR_LANE"; 140 case QETH_LINK_TYPE_LANE_ETH1000: 141 return "OSD_GbE_LANE"; 142 case QETH_LINK_TYPE_LANE: 143 return "OSD_ATM_LANE"; 144 default: 145 return "OSD_Express"; 146 } 147 case QETH_CARD_TYPE_IQD: 148 return "HiperSockets"; 149 case QETH_CARD_TYPE_OSM: 150 return "OSM_1000"; 151 case QETH_CARD_TYPE_OSX: 152 return "OSX_10GIG"; 153 default: 154 return "unknown"; 155 } 156 } 157 return "n/a"; 158} 159 160void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 161 int clear_start_mask) 162{ 163 unsigned long flags; 164 165 spin_lock_irqsave(&card->thread_mask_lock, flags); 166 card->thread_allowed_mask = threads; 167 if (clear_start_mask) 168 card->thread_start_mask &= threads; 169 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 170 wake_up(&card->wait_q); 171} 172EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 173 174int qeth_threads_running(struct qeth_card *card, unsigned long threads) 175{ 176 unsigned long flags; 177 int rc = 0; 178 179 spin_lock_irqsave(&card->thread_mask_lock, flags); 180 rc = (card->thread_running_mask & threads); 181 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 182 return rc; 183} 184EXPORT_SYMBOL_GPL(qeth_threads_running); 185 186static void qeth_clear_working_pool_list(struct qeth_card *card) 187{ 188 struct qeth_buffer_pool_entry *pool_entry, *tmp; 189 struct qeth_qdio_q *queue = card->qdio.in_q; 190 unsigned int i; 191 192 QETH_CARD_TEXT(card, 5, "clwrklst"); 193 list_for_each_entry_safe(pool_entry, tmp, 194 &card->qdio.in_buf_pool.entry_list, list) 195 list_del(&pool_entry->list); 196 197 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++) 198 queue->bufs[i].pool_entry = NULL; 199} 200 201static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry) 202{ 203 unsigned int i; 204 205 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) { 206 if (entry->elements[i]) 207 __free_page(entry->elements[i]); 208 } 209 210 kfree(entry); 211} 212 213static void qeth_free_buffer_pool(struct qeth_card *card) 214{ 215 struct qeth_buffer_pool_entry *entry, *tmp; 216 217 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list, 218 init_list) { 219 list_del(&entry->init_list); 220 qeth_free_pool_entry(entry); 221 } 222} 223 224static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages) 225{ 226 struct qeth_buffer_pool_entry *entry; 227 unsigned int i; 228 229 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 230 if (!entry) 231 return NULL; 232 233 for (i = 0; i < pages; i++) { 234 entry->elements[i] = __dev_alloc_page(GFP_KERNEL); 235 236 if (!entry->elements[i]) { 237 qeth_free_pool_entry(entry); 238 return NULL; 239 } 240 } 241 242 return entry; 243} 244 245static int qeth_alloc_buffer_pool(struct qeth_card *card) 246{ 247 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card); 248 unsigned int i; 249 250 QETH_CARD_TEXT(card, 5, "alocpool"); 251 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 252 struct qeth_buffer_pool_entry *entry; 253 254 entry = qeth_alloc_pool_entry(buf_elements); 255 if (!entry) { 256 qeth_free_buffer_pool(card); 257 return -ENOMEM; 258 } 259 260 list_add(&entry->init_list, &card->qdio.init_pool.entry_list); 261 } 262 return 0; 263} 264 265int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count) 266{ 267 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card); 268 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool; 269 struct qeth_buffer_pool_entry *entry, *tmp; 270 int delta = count - pool->buf_count; 271 LIST_HEAD(entries); 272 273 QETH_CARD_TEXT(card, 2, "realcbp"); 274 275 /* Defer until pool is allocated: */ 276 if (list_empty(&pool->entry_list)) 277 goto out; 278 279 /* Remove entries from the pool: */ 280 while (delta < 0) { 281 entry = list_first_entry(&pool->entry_list, 282 struct qeth_buffer_pool_entry, 283 init_list); 284 list_del(&entry->init_list); 285 qeth_free_pool_entry(entry); 286 287 delta++; 288 } 289 290 /* Allocate additional entries: */ 291 while (delta > 0) { 292 entry = qeth_alloc_pool_entry(buf_elements); 293 if (!entry) { 294 list_for_each_entry_safe(entry, tmp, &entries, 295 init_list) { 296 list_del(&entry->init_list); 297 qeth_free_pool_entry(entry); 298 } 299 300 return -ENOMEM; 301 } 302 303 list_add(&entry->init_list, &entries); 304 305 delta--; 306 } 307 308 list_splice(&entries, &pool->entry_list); 309 310out: 311 card->qdio.in_buf_pool.buf_count = count; 312 pool->buf_count = count; 313 return 0; 314} 315EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool); 316 317static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 318{ 319 if (!q) 320 return; 321 322 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 323 kfree(q); 324} 325 326static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 327{ 328 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 329 int i; 330 331 if (!q) 332 return NULL; 333 334 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 335 kfree(q); 336 return NULL; 337 } 338 339 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 340 q->bufs[i].buffer = q->qdio_bufs[i]; 341 342 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 343 return q; 344} 345 346static int qeth_cq_init(struct qeth_card *card) 347{ 348 int rc; 349 350 if (card->options.cq == QETH_CQ_ENABLED) { 351 QETH_CARD_TEXT(card, 2, "cqinit"); 352 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 353 QDIO_MAX_BUFFERS_PER_Q); 354 card->qdio.c_q->next_buf_to_init = 127; 355 356 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 1, 0, 127); 357 if (rc) { 358 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 359 goto out; 360 } 361 } 362 rc = 0; 363out: 364 return rc; 365} 366 367static void qeth_free_cq(struct qeth_card *card) 368{ 369 if (card->qdio.c_q) { 370 qeth_free_qdio_queue(card->qdio.c_q); 371 card->qdio.c_q = NULL; 372 } 373} 374 375static int qeth_alloc_cq(struct qeth_card *card) 376{ 377 if (card->options.cq == QETH_CQ_ENABLED) { 378 QETH_CARD_TEXT(card, 2, "cqon"); 379 if (!card->qdio.c_q) { 380 card->qdio.c_q = qeth_alloc_qdio_queue(); 381 if (!card->qdio.c_q) { 382 dev_err(&card->gdev->dev, 383 "Failed to create completion queue\n"); 384 return -ENOMEM; 385 } 386 } 387 } else { 388 QETH_CARD_TEXT(card, 2, "nocq"); 389 qeth_free_cq(card); 390 } 391 return 0; 392} 393 394static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 395 int delayed) 396{ 397 enum iucv_tx_notify n; 398 399 switch (sbalf15) { 400 case 0: 401 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 402 break; 403 case 4: 404 case 16: 405 case 17: 406 case 18: 407 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 408 TX_NOTIFY_UNREACHABLE; 409 break; 410 default: 411 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 412 TX_NOTIFY_GENERALERROR; 413 break; 414 } 415 416 return n; 417} 418 419static void qeth_put_cmd(struct qeth_cmd_buffer *iob) 420{ 421 if (refcount_dec_and_test(&iob->ref_count)) { 422 kfree(iob->data); 423 kfree(iob); 424 } 425} 426static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len, 427 void *data) 428{ 429 ccw->cmd_code = cmd_code; 430 ccw->flags = flags | CCW_FLAG_SLI; 431 ccw->count = len; 432 ccw->cda = virt_to_dma32(data); 433} 434 435static int __qeth_issue_next_read(struct qeth_card *card) 436{ 437 struct qeth_cmd_buffer *iob = card->read_cmd; 438 struct qeth_channel *channel = iob->channel; 439 struct ccw1 *ccw = __ccw_from_cmd(iob); 440 int rc; 441 442 QETH_CARD_TEXT(card, 5, "issnxrd"); 443 if (channel->state != CH_STATE_UP) 444 return -EIO; 445 446 memset(iob->data, 0, iob->length); 447 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data); 448 iob->callback = qeth_issue_next_read_cb; 449 /* keep the cmd alive after completion: */ 450 qeth_get_cmd(iob); 451 452 QETH_CARD_TEXT(card, 6, "noirqpnd"); 453 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0); 454 if (!rc) { 455 channel->active_cmd = iob; 456 } else { 457 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n", 458 rc, CARD_DEVID(card)); 459 qeth_unlock_channel(card, channel); 460 qeth_put_cmd(iob); 461 card->read_or_write_problem = 1; 462 qeth_schedule_recovery(card); 463 } 464 return rc; 465} 466 467static int qeth_issue_next_read(struct qeth_card *card) 468{ 469 int ret; 470 471 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 472 ret = __qeth_issue_next_read(card); 473 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 474 475 return ret; 476} 477 478static void qeth_enqueue_cmd(struct qeth_card *card, 479 struct qeth_cmd_buffer *iob) 480{ 481 spin_lock_irq(&card->lock); 482 list_add_tail(&iob->list_entry, &card->cmd_waiter_list); 483 spin_unlock_irq(&card->lock); 484} 485 486static void qeth_dequeue_cmd(struct qeth_card *card, 487 struct qeth_cmd_buffer *iob) 488{ 489 spin_lock_irq(&card->lock); 490 list_del(&iob->list_entry); 491 spin_unlock_irq(&card->lock); 492} 493 494static void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason) 495{ 496 iob->rc = reason; 497 complete(&iob->done); 498} 499 500static void qeth_flush_local_addrs4(struct qeth_card *card) 501{ 502 struct qeth_local_addr *addr; 503 struct hlist_node *tmp; 504 unsigned int i; 505 506 spin_lock_irq(&card->local_addrs4_lock); 507 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) { 508 hash_del_rcu(&addr->hnode); 509 kfree_rcu(addr, rcu); 510 } 511 spin_unlock_irq(&card->local_addrs4_lock); 512} 513 514static void qeth_flush_local_addrs6(struct qeth_card *card) 515{ 516 struct qeth_local_addr *addr; 517 struct hlist_node *tmp; 518 unsigned int i; 519 520 spin_lock_irq(&card->local_addrs6_lock); 521 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) { 522 hash_del_rcu(&addr->hnode); 523 kfree_rcu(addr, rcu); 524 } 525 spin_unlock_irq(&card->local_addrs6_lock); 526} 527 528static void qeth_flush_local_addrs(struct qeth_card *card) 529{ 530 qeth_flush_local_addrs4(card); 531 qeth_flush_local_addrs6(card); 532} 533 534static void qeth_add_local_addrs4(struct qeth_card *card, 535 struct qeth_ipacmd_local_addrs4 *cmd) 536{ 537 unsigned int i; 538 539 if (cmd->addr_length != 540 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) { 541 dev_err_ratelimited(&card->gdev->dev, 542 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n", 543 cmd->addr_length); 544 return; 545 } 546 547 spin_lock(&card->local_addrs4_lock); 548 for (i = 0; i < cmd->count; i++) { 549 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr); 550 struct qeth_local_addr *addr; 551 bool duplicate = false; 552 553 hash_for_each_possible(card->local_addrs4, addr, hnode, key) { 554 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) { 555 duplicate = true; 556 break; 557 } 558 } 559 560 if (duplicate) 561 continue; 562 563 addr = kmalloc(sizeof(*addr), GFP_ATOMIC); 564 if (!addr) { 565 dev_err(&card->gdev->dev, 566 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n", 567 &cmd->addrs[i].addr); 568 continue; 569 } 570 571 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr); 572 hash_add_rcu(card->local_addrs4, &addr->hnode, key); 573 } 574 spin_unlock(&card->local_addrs4_lock); 575} 576 577static void qeth_add_local_addrs6(struct qeth_card *card, 578 struct qeth_ipacmd_local_addrs6 *cmd) 579{ 580 unsigned int i; 581 582 if (cmd->addr_length != 583 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) { 584 dev_err_ratelimited(&card->gdev->dev, 585 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n", 586 cmd->addr_length); 587 return; 588 } 589 590 spin_lock(&card->local_addrs6_lock); 591 for (i = 0; i < cmd->count; i++) { 592 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr); 593 struct qeth_local_addr *addr; 594 bool duplicate = false; 595 596 hash_for_each_possible(card->local_addrs6, addr, hnode, key) { 597 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) { 598 duplicate = true; 599 break; 600 } 601 } 602 603 if (duplicate) 604 continue; 605 606 addr = kmalloc(sizeof(*addr), GFP_ATOMIC); 607 if (!addr) { 608 dev_err(&card->gdev->dev, 609 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n", 610 &cmd->addrs[i].addr); 611 continue; 612 } 613 614 addr->addr = cmd->addrs[i].addr; 615 hash_add_rcu(card->local_addrs6, &addr->hnode, key); 616 } 617 spin_unlock(&card->local_addrs6_lock); 618} 619 620static void qeth_del_local_addrs4(struct qeth_card *card, 621 struct qeth_ipacmd_local_addrs4 *cmd) 622{ 623 unsigned int i; 624 625 if (cmd->addr_length != 626 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) { 627 dev_err_ratelimited(&card->gdev->dev, 628 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n", 629 cmd->addr_length); 630 return; 631 } 632 633 spin_lock(&card->local_addrs4_lock); 634 for (i = 0; i < cmd->count; i++) { 635 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i]; 636 unsigned int key = ipv4_addr_hash(addr->addr); 637 struct qeth_local_addr *tmp; 638 639 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) { 640 if (tmp->addr.s6_addr32[3] == addr->addr) { 641 hash_del_rcu(&tmp->hnode); 642 kfree_rcu(tmp, rcu); 643 break; 644 } 645 } 646 } 647 spin_unlock(&card->local_addrs4_lock); 648} 649 650static void qeth_del_local_addrs6(struct qeth_card *card, 651 struct qeth_ipacmd_local_addrs6 *cmd) 652{ 653 unsigned int i; 654 655 if (cmd->addr_length != 656 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) { 657 dev_err_ratelimited(&card->gdev->dev, 658 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n", 659 cmd->addr_length); 660 return; 661 } 662 663 spin_lock(&card->local_addrs6_lock); 664 for (i = 0; i < cmd->count; i++) { 665 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i]; 666 u32 key = ipv6_addr_hash(&addr->addr); 667 struct qeth_local_addr *tmp; 668 669 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) { 670 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) { 671 hash_del_rcu(&tmp->hnode); 672 kfree_rcu(tmp, rcu); 673 break; 674 } 675 } 676 } 677 spin_unlock(&card->local_addrs6_lock); 678} 679 680static bool qeth_next_hop_is_local_v4(struct qeth_card *card, 681 struct sk_buff *skb) 682{ 683 struct qeth_local_addr *tmp; 684 bool is_local = false; 685 unsigned int key; 686 __be32 next_hop; 687 688 if (hash_empty(card->local_addrs4)) 689 return false; 690 691 rcu_read_lock(); 692 next_hop = qeth_next_hop_v4_rcu(skb, 693 qeth_dst_check_rcu(skb, htons(ETH_P_IP))); 694 key = ipv4_addr_hash(next_hop); 695 696 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) { 697 if (tmp->addr.s6_addr32[3] == next_hop) { 698 is_local = true; 699 break; 700 } 701 } 702 rcu_read_unlock(); 703 704 return is_local; 705} 706 707static bool qeth_next_hop_is_local_v6(struct qeth_card *card, 708 struct sk_buff *skb) 709{ 710 struct qeth_local_addr *tmp; 711 struct in6_addr *next_hop; 712 bool is_local = false; 713 u32 key; 714 715 if (hash_empty(card->local_addrs6)) 716 return false; 717 718 rcu_read_lock(); 719 next_hop = qeth_next_hop_v6_rcu(skb, 720 qeth_dst_check_rcu(skb, htons(ETH_P_IPV6))); 721 key = ipv6_addr_hash(next_hop); 722 723 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) { 724 if (ipv6_addr_equal(&tmp->addr, next_hop)) { 725 is_local = true; 726 break; 727 } 728 } 729 rcu_read_unlock(); 730 731 return is_local; 732} 733 734static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v) 735{ 736 struct qeth_card *card = m->private; 737 struct qeth_local_addr *tmp; 738 unsigned int i; 739 740 rcu_read_lock(); 741 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode) 742 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]); 743 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode) 744 seq_printf(m, "%pI6c\n", &tmp->addr); 745 rcu_read_unlock(); 746 747 return 0; 748} 749 750DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr); 751 752static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 753 struct qeth_card *card) 754{ 755 const char *ipa_name; 756 int com = cmd->hdr.command; 757 758 ipa_name = qeth_get_ipa_cmd_name(com); 759 760 if (rc) 761 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n", 762 ipa_name, com, CARD_DEVID(card), rc, 763 qeth_get_ipa_msg(rc)); 764 else 765 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n", 766 ipa_name, com, CARD_DEVID(card)); 767} 768 769static void qeth_default_link_info(struct qeth_card *card) 770{ 771 struct qeth_link_info *link_info = &card->info.link_info; 772 773 QETH_CARD_TEXT(card, 2, "dftlinfo"); 774 link_info->duplex = DUPLEX_FULL; 775 776 if (IS_IQD(card) || IS_VM_NIC(card)) { 777 link_info->speed = SPEED_10000; 778 link_info->port = PORT_FIBRE; 779 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT; 780 } else { 781 switch (card->info.link_type) { 782 case QETH_LINK_TYPE_FAST_ETH: 783 case QETH_LINK_TYPE_LANE_ETH100: 784 link_info->speed = SPEED_100; 785 link_info->port = PORT_TP; 786 break; 787 case QETH_LINK_TYPE_GBIT_ETH: 788 case QETH_LINK_TYPE_LANE_ETH1000: 789 link_info->speed = SPEED_1000; 790 link_info->port = PORT_FIBRE; 791 break; 792 case QETH_LINK_TYPE_10GBIT_ETH: 793 link_info->speed = SPEED_10000; 794 link_info->port = PORT_FIBRE; 795 break; 796 case QETH_LINK_TYPE_25GBIT_ETH: 797 link_info->speed = SPEED_25000; 798 link_info->port = PORT_FIBRE; 799 break; 800 default: 801 dev_info(&card->gdev->dev, 802 "Unknown link type %x\n", 803 card->info.link_type); 804 link_info->speed = SPEED_UNKNOWN; 805 link_info->port = PORT_OTHER; 806 } 807 808 link_info->link_mode = QETH_LINK_MODE_UNKNOWN; 809 } 810} 811 812static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 813 struct qeth_ipa_cmd *cmd) 814{ 815 QETH_CARD_TEXT(card, 5, "chkipad"); 816 817 if (IS_IPA_REPLY(cmd)) { 818 if (cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 819 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 820 return cmd; 821 } 822 823 /* handle unsolicited event: */ 824 switch (cmd->hdr.command) { 825 case IPA_CMD_STOPLAN: 826 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) { 827 dev_err(&card->gdev->dev, 828 "Adjacent port of interface %s is no longer in reflective relay mode, trigger recovery\n", 829 netdev_name(card->dev)); 830 /* Set offline, then probably fail to set online: */ 831 qeth_schedule_recovery(card); 832 } else { 833 /* stay online for subsequent STARTLAN */ 834 dev_warn(&card->gdev->dev, 835 "The link for interface %s on CHPID 0x%X failed\n", 836 netdev_name(card->dev), card->info.chpid); 837 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card); 838 netif_carrier_off(card->dev); 839 qeth_default_link_info(card); 840 } 841 return NULL; 842 case IPA_CMD_STARTLAN: 843 dev_info(&card->gdev->dev, 844 "The link for %s on CHPID 0x%X has been restored\n", 845 netdev_name(card->dev), card->info.chpid); 846 if (card->info.hwtrap) 847 card->info.hwtrap = 2; 848 qeth_schedule_recovery(card); 849 return NULL; 850 case IPA_CMD_SETBRIDGEPORT_IQD: 851 case IPA_CMD_SETBRIDGEPORT_OSA: 852 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 853 if (card->discipline->control_event_handler(card, cmd)) 854 return cmd; 855 return NULL; 856 case IPA_CMD_REGISTER_LOCAL_ADDR: 857 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 858 qeth_add_local_addrs4(card, &cmd->data.local_addrs4); 859 else if (cmd->hdr.prot_version == QETH_PROT_IPV6) 860 qeth_add_local_addrs6(card, &cmd->data.local_addrs6); 861 862 QETH_CARD_TEXT(card, 3, "irla"); 863 return NULL; 864 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 865 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 866 qeth_del_local_addrs4(card, &cmd->data.local_addrs4); 867 else if (cmd->hdr.prot_version == QETH_PROT_IPV6) 868 qeth_del_local_addrs6(card, &cmd->data.local_addrs6); 869 870 QETH_CARD_TEXT(card, 3, "urla"); 871 return NULL; 872 default: 873 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n"); 874 return cmd; 875 } 876} 877 878static void qeth_clear_ipacmd_list(struct qeth_card *card) 879{ 880 struct qeth_cmd_buffer *iob; 881 unsigned long flags; 882 883 QETH_CARD_TEXT(card, 4, "clipalst"); 884 885 spin_lock_irqsave(&card->lock, flags); 886 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry) 887 qeth_notify_cmd(iob, -ECANCELED); 888 spin_unlock_irqrestore(&card->lock, flags); 889} 890 891static int qeth_check_idx_response(struct qeth_card *card, 892 unsigned char *buffer) 893{ 894 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 895 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) { 896 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n", 897 buffer[4]); 898 QETH_CARD_TEXT(card, 2, "ckidxres"); 899 QETH_CARD_TEXT(card, 2, " idxterm"); 900 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]); 901 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT || 902 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) { 903 dev_err(&card->gdev->dev, 904 "The device does not support the configured transport mode\n"); 905 return -EPROTONOSUPPORT; 906 } 907 return -EIO; 908 } 909 return 0; 910} 911 912static void qeth_release_buffer_cb(struct qeth_card *card, 913 struct qeth_cmd_buffer *iob, 914 unsigned int data_length) 915{ 916 qeth_put_cmd(iob); 917} 918 919static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc) 920{ 921 qeth_notify_cmd(iob, rc); 922 qeth_put_cmd(iob); 923} 924 925static struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 926 unsigned int length, 927 unsigned int ccws, long timeout) 928{ 929 struct qeth_cmd_buffer *iob; 930 931 if (length > QETH_BUFSIZE) 932 return NULL; 933 934 iob = kzalloc(sizeof(*iob), GFP_KERNEL); 935 if (!iob) 936 return NULL; 937 938 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1), 939 GFP_KERNEL | GFP_DMA); 940 if (!iob->data) { 941 kfree(iob); 942 return NULL; 943 } 944 945 init_completion(&iob->done); 946 spin_lock_init(&iob->lock); 947 refcount_set(&iob->ref_count, 1); 948 iob->channel = channel; 949 iob->timeout = timeout; 950 iob->length = length; 951 return iob; 952} 953 954static void qeth_issue_next_read_cb(struct qeth_card *card, 955 struct qeth_cmd_buffer *iob, 956 unsigned int data_length) 957{ 958 struct qeth_cmd_buffer *request = NULL; 959 struct qeth_ipa_cmd *cmd = NULL; 960 struct qeth_reply *reply = NULL; 961 struct qeth_cmd_buffer *tmp; 962 unsigned long flags; 963 int rc = 0; 964 965 QETH_CARD_TEXT(card, 4, "sndctlcb"); 966 rc = qeth_check_idx_response(card, iob->data); 967 switch (rc) { 968 case 0: 969 break; 970 case -EIO: 971 qeth_schedule_recovery(card); 972 fallthrough; 973 default: 974 qeth_clear_ipacmd_list(card); 975 goto err_idx; 976 } 977 978 cmd = __ipa_reply(iob); 979 if (cmd) { 980 cmd = qeth_check_ipa_data(card, cmd); 981 if (!cmd) 982 goto out; 983 } 984 985 /* match against pending cmd requests */ 986 spin_lock_irqsave(&card->lock, flags); 987 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) { 988 if (tmp->match && tmp->match(tmp, iob)) { 989 request = tmp; 990 /* take the object outside the lock */ 991 qeth_get_cmd(request); 992 break; 993 } 994 } 995 spin_unlock_irqrestore(&card->lock, flags); 996 997 if (!request) 998 goto out; 999 1000 reply = &request->reply; 1001 if (!reply->callback) { 1002 rc = 0; 1003 goto no_callback; 1004 } 1005 1006 spin_lock_irqsave(&request->lock, flags); 1007 if (request->rc) 1008 /* Bail out when the requestor has already left: */ 1009 rc = request->rc; 1010 else 1011 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd : 1012 (unsigned long)iob); 1013 spin_unlock_irqrestore(&request->lock, flags); 1014 1015no_callback: 1016 if (rc <= 0) 1017 qeth_notify_cmd(request, rc); 1018 qeth_put_cmd(request); 1019out: 1020 memcpy(&card->seqno.pdu_hdr_ack, 1021 QETH_PDU_HEADER_SEQ_NO(iob->data), 1022 QETH_SEQ_NO_LENGTH); 1023 __qeth_issue_next_read(card); 1024err_idx: 1025 qeth_put_cmd(iob); 1026} 1027 1028static int qeth_set_thread_start_bit(struct qeth_card *card, 1029 unsigned long thread) 1030{ 1031 unsigned long flags; 1032 int rc = 0; 1033 1034 spin_lock_irqsave(&card->thread_mask_lock, flags); 1035 if (!(card->thread_allowed_mask & thread)) 1036 rc = -EPERM; 1037 else if (card->thread_start_mask & thread) 1038 rc = -EBUSY; 1039 else 1040 card->thread_start_mask |= thread; 1041 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1042 1043 return rc; 1044} 1045 1046static void qeth_clear_thread_start_bit(struct qeth_card *card, 1047 unsigned long thread) 1048{ 1049 unsigned long flags; 1050 1051 spin_lock_irqsave(&card->thread_mask_lock, flags); 1052 card->thread_start_mask &= ~thread; 1053 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1054 wake_up(&card->wait_q); 1055} 1056 1057static void qeth_clear_thread_running_bit(struct qeth_card *card, 1058 unsigned long thread) 1059{ 1060 unsigned long flags; 1061 1062 spin_lock_irqsave(&card->thread_mask_lock, flags); 1063 card->thread_running_mask &= ~thread; 1064 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1065 wake_up_all(&card->wait_q); 1066} 1067 1068static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 1069{ 1070 unsigned long flags; 1071 int rc = 0; 1072 1073 spin_lock_irqsave(&card->thread_mask_lock, flags); 1074 if (card->thread_start_mask & thread) { 1075 if ((card->thread_allowed_mask & thread) && 1076 !(card->thread_running_mask & thread)) { 1077 rc = 1; 1078 card->thread_start_mask &= ~thread; 1079 card->thread_running_mask |= thread; 1080 } else 1081 rc = -EPERM; 1082 } 1083 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1084 return rc; 1085} 1086 1087static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 1088{ 1089 int rc = 0; 1090 1091 wait_event(card->wait_q, 1092 (rc = __qeth_do_run_thread(card, thread)) >= 0); 1093 return rc; 1094} 1095 1096int qeth_schedule_recovery(struct qeth_card *card) 1097{ 1098 int rc; 1099 1100 QETH_CARD_TEXT(card, 2, "startrec"); 1101 1102 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD); 1103 if (!rc) 1104 schedule_work(&card->kernel_thread_starter); 1105 1106 return rc; 1107} 1108 1109static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev, 1110 struct irb *irb) 1111{ 1112 int dstat, cstat; 1113 char *sense; 1114 1115 sense = (char *) irb->ecw; 1116 cstat = irb->scsw.cmd.cstat; 1117 dstat = irb->scsw.cmd.dstat; 1118 1119 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1120 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1121 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1122 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1123 dev_warn(&cdev->dev, "The qeth device driver " 1124 "failed to recover an error on the device\n"); 1125 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n", 1126 CCW_DEVID(cdev), dstat, cstat); 1127 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1128 16, 1, irb, 64, 1); 1129 return -EIO; 1130 } 1131 1132 if (dstat & DEV_STAT_UNIT_CHECK) { 1133 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1134 SENSE_RESETTING_EVENT_FLAG) { 1135 QETH_CARD_TEXT(card, 2, "REVIND"); 1136 return -EIO; 1137 } 1138 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1139 SENSE_COMMAND_REJECT_FLAG) { 1140 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1141 return -EIO; 1142 } 1143 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1144 QETH_CARD_TEXT(card, 2, "AFFE"); 1145 return -EIO; 1146 } 1147 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1148 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1149 return 0; 1150 } 1151 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1152 return -EIO; 1153 } 1154 return 0; 1155} 1156 1157static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev, 1158 struct irb *irb) 1159{ 1160 if (!IS_ERR(irb)) 1161 return 0; 1162 1163 switch (PTR_ERR(irb)) { 1164 case -EIO: 1165 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n", 1166 CCW_DEVID(cdev)); 1167 QETH_CARD_TEXT(card, 2, "ckirberr"); 1168 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1169 return -EIO; 1170 case -ETIMEDOUT: 1171 dev_warn(&cdev->dev, "A hardware operation timed out" 1172 " on the device\n"); 1173 QETH_CARD_TEXT(card, 2, "ckirberr"); 1174 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1175 return -ETIMEDOUT; 1176 default: 1177 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n", 1178 PTR_ERR(irb), CCW_DEVID(cdev)); 1179 QETH_CARD_TEXT(card, 2, "ckirberr"); 1180 QETH_CARD_TEXT(card, 2, " rc???"); 1181 return PTR_ERR(irb); 1182 } 1183} 1184 1185/** 1186 * qeth_irq() - qeth interrupt handler 1187 * @cdev: ccw device 1188 * @intparm: expect pointer to iob 1189 * @irb: Interruption Response Block 1190 * 1191 * In the good path: 1192 * corresponding qeth channel is locked with last used iob as active_cmd. 1193 * But this function is also called for error interrupts. 1194 * 1195 * Caller ensures that: 1196 * Interrupts are disabled; ccw device lock is held; 1197 * 1198 */ 1199static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1200 struct irb *irb) 1201{ 1202 int rc; 1203 int cstat, dstat; 1204 struct qeth_cmd_buffer *iob = NULL; 1205 struct ccwgroup_device *gdev; 1206 struct qeth_channel *channel; 1207 struct qeth_card *card; 1208 1209 /* while we hold the ccwdev lock, this stays valid: */ 1210 gdev = dev_get_drvdata(&cdev->dev); 1211 card = dev_get_drvdata(&gdev->dev); 1212 1213 QETH_CARD_TEXT(card, 5, "irq"); 1214 1215 if (card->read.ccwdev == cdev) { 1216 channel = &card->read; 1217 QETH_CARD_TEXT(card, 5, "read"); 1218 } else if (card->write.ccwdev == cdev) { 1219 channel = &card->write; 1220 QETH_CARD_TEXT(card, 5, "write"); 1221 } else { 1222 channel = &card->data; 1223 QETH_CARD_TEXT(card, 5, "data"); 1224 } 1225 1226 if (intparm == 0) { 1227 QETH_CARD_TEXT(card, 5, "irqunsol"); 1228 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) { 1229 QETH_CARD_TEXT(card, 5, "irqunexp"); 1230 1231 dev_err(&cdev->dev, 1232 "Received IRQ with intparm %lx, expected %px\n", 1233 intparm, channel->active_cmd); 1234 if (channel->active_cmd) 1235 qeth_cancel_cmd(channel->active_cmd, -EIO); 1236 } else { 1237 iob = (struct qeth_cmd_buffer *) (addr_t)intparm; 1238 } 1239 1240 rc = qeth_check_irb_error(card, cdev, irb); 1241 if (rc) { 1242 /* IO was terminated, free its resources. */ 1243 qeth_unlock_channel(card, channel); 1244 if (iob) 1245 qeth_cancel_cmd(iob, rc); 1246 return; 1247 } 1248 1249 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) { 1250 channel->state = CH_STATE_STOPPED; 1251 wake_up(&card->wait_q); 1252 } 1253 1254 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) { 1255 channel->state = CH_STATE_HALTED; 1256 wake_up(&card->wait_q); 1257 } 1258 1259 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC | 1260 SCSW_FCTL_HALT_FUNC))) { 1261 qeth_cancel_cmd(iob, -ECANCELED); 1262 iob = NULL; 1263 } 1264 1265 cstat = irb->scsw.cmd.cstat; 1266 dstat = irb->scsw.cmd.dstat; 1267 1268 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1269 (dstat & DEV_STAT_UNIT_CHECK) || 1270 (cstat)) { 1271 if (irb->esw.esw0.erw.cons) { 1272 dev_warn(&channel->ccwdev->dev, 1273 "The qeth device driver failed to recover " 1274 "an error on the device\n"); 1275 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n", 1276 CCW_DEVID(channel->ccwdev), cstat, 1277 dstat); 1278 print_hex_dump(KERN_WARNING, "qeth: irb ", 1279 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1280 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1281 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1282 } 1283 1284 rc = qeth_get_problem(card, cdev, irb); 1285 if (rc) { 1286 card->read_or_write_problem = 1; 1287 qeth_unlock_channel(card, channel); 1288 if (iob) 1289 qeth_cancel_cmd(iob, rc); 1290 qeth_clear_ipacmd_list(card); 1291 qeth_schedule_recovery(card); 1292 return; 1293 } 1294 } 1295 1296 if (scsw_cmd_is_valid_cc(&irb->scsw) && irb->scsw.cmd.cc == 1 && iob) { 1297 /* channel command hasn't started: retry. 1298 * active_cmd is still set to last iob 1299 */ 1300 QETH_CARD_TEXT(card, 2, "irqcc1"); 1301 rc = ccw_device_start_timeout(cdev, __ccw_from_cmd(iob), 1302 (addr_t)iob, 0, 0, iob->timeout); 1303 if (rc) { 1304 QETH_DBF_MESSAGE(2, 1305 "ccw retry on %x failed, rc = %i\n", 1306 CARD_DEVID(card), rc); 1307 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1308 qeth_unlock_channel(card, channel); 1309 qeth_cancel_cmd(iob, rc); 1310 } 1311 return; 1312 } 1313 1314 qeth_unlock_channel(card, channel); 1315 1316 if (iob) { 1317 /* sanity check: */ 1318 if (irb->scsw.cmd.count > iob->length) { 1319 qeth_cancel_cmd(iob, -EIO); 1320 return; 1321 } 1322 if (iob->callback) 1323 iob->callback(card, iob, 1324 iob->length - irb->scsw.cmd.count); 1325 } 1326} 1327 1328static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1329 struct qeth_qdio_out_buffer *buf, 1330 enum iucv_tx_notify notification) 1331{ 1332 struct sk_buff *skb; 1333 1334 skb_queue_walk(&buf->skb_list, skb) { 1335 struct sock *sk = skb->sk; 1336 1337 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1338 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1339 if (sk && sk->sk_family == PF_IUCV) 1340 iucv_sk(sk)->sk_txnotify(sk, notification); 1341 } 1342} 1343 1344static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue, 1345 struct qeth_qdio_out_buffer *buf, bool error, 1346 int budget) 1347{ 1348 struct sk_buff *skb; 1349 1350 /* Empty buffer? */ 1351 if (buf->next_element_to_fill == 0) 1352 return; 1353 1354 QETH_TXQ_STAT_INC(queue, bufs); 1355 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill); 1356 if (error) { 1357 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames); 1358 } else { 1359 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames); 1360 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes); 1361 } 1362 1363 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) { 1364 unsigned int bytes = qdisc_pkt_len(skb); 1365 bool is_tso = skb_is_gso(skb); 1366 unsigned int packets; 1367 1368 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1; 1369 if (!error) { 1370 if (skb->ip_summed == CHECKSUM_PARTIAL) 1371 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets); 1372 if (skb_is_nonlinear(skb)) 1373 QETH_TXQ_STAT_INC(queue, skbs_sg); 1374 if (is_tso) { 1375 QETH_TXQ_STAT_INC(queue, skbs_tso); 1376 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes); 1377 } 1378 } 1379 1380 napi_consume_skb(skb, budget); 1381 } 1382} 1383 1384static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1385 struct qeth_qdio_out_buffer *buf, 1386 bool error, int budget) 1387{ 1388 int i; 1389 1390 /* is PCI flag set on buffer? */ 1391 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) { 1392 atomic_dec(&queue->set_pci_flags_count); 1393 QETH_TXQ_STAT_INC(queue, completion_irq); 1394 } 1395 1396 qeth_tx_complete_buf(queue, buf, error, budget); 1397 1398 for (i = 0; i < queue->max_elements; ++i) { 1399 void *data = dma64_to_virt(buf->buffer->element[i].addr); 1400 1401 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data) 1402 kmem_cache_free(qeth_core_header_cache, data); 1403 } 1404 1405 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements); 1406 buf->next_element_to_fill = 0; 1407 buf->frames = 0; 1408 buf->bytes = 0; 1409 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); 1410} 1411 1412static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf) 1413{ 1414 if (buf->aob) 1415 kmem_cache_free(qeth_qaob_cache, buf->aob); 1416 kmem_cache_free(qeth_qdio_outbuf_cache, buf); 1417} 1418 1419static void qeth_tx_complete_pending_bufs(struct qeth_card *card, 1420 struct qeth_qdio_out_q *queue, 1421 bool drain, int budget) 1422{ 1423 struct qeth_qdio_out_buffer *buf, *tmp; 1424 1425 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) { 1426 struct qeth_qaob_priv1 *priv; 1427 struct qaob *aob = buf->aob; 1428 enum iucv_tx_notify notify; 1429 unsigned int i; 1430 1431 priv = (struct qeth_qaob_priv1 *)&aob->user1; 1432 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) { 1433 QETH_CARD_TEXT(card, 5, "fp"); 1434 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf); 1435 1436 notify = drain ? TX_NOTIFY_GENERALERROR : 1437 qeth_compute_cq_notification(aob->aorc, 1); 1438 qeth_notify_skbs(queue, buf, notify); 1439 qeth_tx_complete_buf(queue, buf, drain, budget); 1440 1441 for (i = 0; 1442 i < aob->sb_count && i < queue->max_elements; 1443 i++) { 1444 void *data = dma64_to_virt(aob->sba[i]); 1445 1446 if (test_bit(i, buf->from_kmem_cache) && data) 1447 kmem_cache_free(qeth_core_header_cache, 1448 data); 1449 } 1450 1451 list_del(&buf->list_entry); 1452 qeth_free_out_buf(buf); 1453 } 1454 } 1455} 1456 1457static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free) 1458{ 1459 int j; 1460 1461 qeth_tx_complete_pending_bufs(q->card, q, true, 0); 1462 1463 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1464 if (!q->bufs[j]) 1465 continue; 1466 1467 qeth_clear_output_buffer(q, q->bufs[j], true, 0); 1468 if (free) { 1469 qeth_free_out_buf(q->bufs[j]); 1470 q->bufs[j] = NULL; 1471 } 1472 } 1473} 1474 1475static void qeth_drain_output_queues(struct qeth_card *card) 1476{ 1477 int i; 1478 1479 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1480 /* clear outbound buffers to free skbs */ 1481 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1482 if (card->qdio.out_qs[i]) 1483 qeth_drain_output_queue(card->qdio.out_qs[i], false); 1484 } 1485} 1486 1487static void qeth_osa_set_output_queues(struct qeth_card *card, bool single) 1488{ 1489 unsigned int max = single ? 1 : card->dev->num_tx_queues; 1490 1491 if (card->qdio.no_out_queues == max) 1492 return; 1493 1494 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) 1495 qeth_free_qdio_queues(card); 1496 1497 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT) 1498 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1499 1500 card->qdio.no_out_queues = max; 1501} 1502 1503static int qeth_update_from_chp_desc(struct qeth_card *card) 1504{ 1505 struct ccw_device *ccwdev; 1506 struct channel_path_desc_fmt0 *chp_dsc; 1507 1508 QETH_CARD_TEXT(card, 2, "chp_desc"); 1509 1510 ccwdev = card->data.ccwdev; 1511 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1512 if (!chp_dsc) 1513 return -ENOMEM; 1514 1515 card->info.func_level = 0x4100 + chp_dsc->desc; 1516 1517 if (IS_OSD(card) || IS_OSX(card)) 1518 /* CHPP field bit 6 == 1 -> single queue */ 1519 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02); 1520 1521 kfree(chp_dsc); 1522 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues); 1523 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level); 1524 return 0; 1525} 1526 1527static void qeth_init_qdio_info(struct qeth_card *card) 1528{ 1529 QETH_CARD_TEXT(card, 4, "intqdinf"); 1530 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1531 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1532 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1533 1534 /* inbound */ 1535 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1536 if (IS_IQD(card)) 1537 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1538 else 1539 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1540 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1541 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1542 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1543} 1544 1545static void qeth_set_initial_options(struct qeth_card *card) 1546{ 1547 card->options.route4.type = NO_ROUTER; 1548 card->options.route6.type = NO_ROUTER; 1549 card->options.isolation = ISOLATION_MODE_NONE; 1550 card->options.cq = QETH_CQ_DISABLED; 1551 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 1552} 1553 1554static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1555{ 1556 unsigned long flags; 1557 int rc = 0; 1558 1559 spin_lock_irqsave(&card->thread_mask_lock, flags); 1560 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1561 (u8) card->thread_start_mask, 1562 (u8) card->thread_allowed_mask, 1563 (u8) card->thread_running_mask); 1564 rc = (card->thread_start_mask & thread); 1565 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1566 return rc; 1567} 1568 1569static int qeth_do_reset(void *data); 1570static void qeth_start_kernel_thread(struct work_struct *work) 1571{ 1572 struct task_struct *ts; 1573 struct qeth_card *card = container_of(work, struct qeth_card, 1574 kernel_thread_starter); 1575 QETH_CARD_TEXT(card, 2, "strthrd"); 1576 1577 if (card->read.state != CH_STATE_UP && 1578 card->write.state != CH_STATE_UP) 1579 return; 1580 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1581 ts = kthread_run(qeth_do_reset, card, "qeth_recover"); 1582 if (IS_ERR(ts)) { 1583 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1584 qeth_clear_thread_running_bit(card, 1585 QETH_RECOVER_THREAD); 1586 } 1587 } 1588} 1589 1590static void qeth_buffer_reclaim_work(struct work_struct *); 1591static void qeth_setup_card(struct qeth_card *card) 1592{ 1593 QETH_CARD_TEXT(card, 2, "setupcrd"); 1594 1595 card->info.type = CARD_RDEV(card)->id.driver_info; 1596 card->state = CARD_STATE_DOWN; 1597 spin_lock_init(&card->lock); 1598 spin_lock_init(&card->thread_mask_lock); 1599 mutex_init(&card->conf_mutex); 1600 mutex_init(&card->discipline_mutex); 1601 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1602 INIT_LIST_HEAD(&card->cmd_waiter_list); 1603 init_waitqueue_head(&card->wait_q); 1604 qeth_set_initial_options(card); 1605 /* IP address takeover */ 1606 INIT_LIST_HEAD(&card->ipato.entries); 1607 qeth_init_qdio_info(card); 1608 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1609 hash_init(card->rx_mode_addrs); 1610 hash_init(card->local_addrs4); 1611 hash_init(card->local_addrs6); 1612 spin_lock_init(&card->local_addrs4_lock); 1613 spin_lock_init(&card->local_addrs6_lock); 1614} 1615 1616static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1617{ 1618 struct qeth_card *card = container_of(slr, struct qeth_card, 1619 qeth_service_level); 1620 if (card->info.mcl_level[0]) 1621 seq_printf(m, "qeth: %s firmware level %s\n", 1622 CARD_BUS_ID(card), card->info.mcl_level); 1623} 1624 1625static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev) 1626{ 1627 struct qeth_card *card; 1628 1629 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1630 card = kzalloc(sizeof(*card), GFP_KERNEL); 1631 if (!card) 1632 goto out; 1633 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1634 1635 card->gdev = gdev; 1636 dev_set_drvdata(&gdev->dev, card); 1637 CARD_RDEV(card) = gdev->cdev[0]; 1638 CARD_WDEV(card) = gdev->cdev[1]; 1639 CARD_DDEV(card) = gdev->cdev[2]; 1640 1641 card->event_wq = alloc_ordered_workqueue("%s_event", 0, 1642 dev_name(&gdev->dev)); 1643 if (!card->event_wq) 1644 goto out_wq; 1645 1646 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0); 1647 if (!card->read_cmd) 1648 goto out_read_cmd; 1649 1650 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev), 1651 qeth_debugfs_root); 1652 debugfs_create_file("local_addrs", 0400, card->debugfs, card, 1653 &qeth_debugfs_local_addr_fops); 1654 1655 card->qeth_service_level.seq_print = qeth_core_sl_print; 1656 register_service_level(&card->qeth_service_level); 1657 return card; 1658 1659out_read_cmd: 1660 destroy_workqueue(card->event_wq); 1661out_wq: 1662 dev_set_drvdata(&gdev->dev, NULL); 1663 kfree(card); 1664out: 1665 return NULL; 1666} 1667 1668static int qeth_clear_channel(struct qeth_card *card, 1669 struct qeth_channel *channel) 1670{ 1671 int rc; 1672 1673 QETH_CARD_TEXT(card, 3, "clearch"); 1674 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1675 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd); 1676 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1677 1678 if (rc) 1679 return rc; 1680 rc = wait_event_interruptible_timeout(card->wait_q, 1681 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1682 if (rc == -ERESTARTSYS) 1683 return rc; 1684 if (channel->state != CH_STATE_STOPPED) 1685 return -ETIME; 1686 channel->state = CH_STATE_DOWN; 1687 return 0; 1688} 1689 1690static int qeth_halt_channel(struct qeth_card *card, 1691 struct qeth_channel *channel) 1692{ 1693 int rc; 1694 1695 QETH_CARD_TEXT(card, 3, "haltch"); 1696 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1697 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd); 1698 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1699 1700 if (rc) 1701 return rc; 1702 rc = wait_event_interruptible_timeout(card->wait_q, 1703 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1704 if (rc == -ERESTARTSYS) 1705 return rc; 1706 if (channel->state != CH_STATE_HALTED) 1707 return -ETIME; 1708 return 0; 1709} 1710 1711static int qeth_stop_channel(struct qeth_channel *channel) 1712{ 1713 struct ccw_device *cdev = channel->ccwdev; 1714 int rc; 1715 1716 rc = ccw_device_set_offline(cdev); 1717 1718 spin_lock_irq(get_ccwdev_lock(cdev)); 1719 if (channel->active_cmd) 1720 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n", 1721 channel->active_cmd); 1722 1723 cdev->handler = NULL; 1724 spin_unlock_irq(get_ccwdev_lock(cdev)); 1725 1726 return rc; 1727} 1728 1729static int qeth_start_channel(struct qeth_channel *channel) 1730{ 1731 struct ccw_device *cdev = channel->ccwdev; 1732 int rc; 1733 1734 channel->state = CH_STATE_DOWN; 1735 xchg(&channel->active_cmd, NULL); 1736 1737 spin_lock_irq(get_ccwdev_lock(cdev)); 1738 cdev->handler = qeth_irq; 1739 spin_unlock_irq(get_ccwdev_lock(cdev)); 1740 1741 rc = ccw_device_set_online(cdev); 1742 if (rc) 1743 goto err; 1744 1745 return 0; 1746 1747err: 1748 spin_lock_irq(get_ccwdev_lock(cdev)); 1749 cdev->handler = NULL; 1750 spin_unlock_irq(get_ccwdev_lock(cdev)); 1751 return rc; 1752} 1753 1754static int qeth_halt_channels(struct qeth_card *card) 1755{ 1756 int rc1 = 0, rc2 = 0, rc3 = 0; 1757 1758 QETH_CARD_TEXT(card, 3, "haltchs"); 1759 rc1 = qeth_halt_channel(card, &card->read); 1760 rc2 = qeth_halt_channel(card, &card->write); 1761 rc3 = qeth_halt_channel(card, &card->data); 1762 if (rc1) 1763 return rc1; 1764 if (rc2) 1765 return rc2; 1766 return rc3; 1767} 1768 1769static int qeth_clear_channels(struct qeth_card *card) 1770{ 1771 int rc1 = 0, rc2 = 0, rc3 = 0; 1772 1773 QETH_CARD_TEXT(card, 3, "clearchs"); 1774 rc1 = qeth_clear_channel(card, &card->read); 1775 rc2 = qeth_clear_channel(card, &card->write); 1776 rc3 = qeth_clear_channel(card, &card->data); 1777 if (rc1) 1778 return rc1; 1779 if (rc2) 1780 return rc2; 1781 return rc3; 1782} 1783 1784static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1785{ 1786 int rc = 0; 1787 1788 QETH_CARD_TEXT(card, 3, "clhacrd"); 1789 1790 if (halt) 1791 rc = qeth_halt_channels(card); 1792 if (rc) 1793 return rc; 1794 return qeth_clear_channels(card); 1795} 1796 1797static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1798{ 1799 int rc = 0; 1800 1801 QETH_CARD_TEXT(card, 3, "qdioclr"); 1802 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1803 QETH_QDIO_CLEANING)) { 1804 case QETH_QDIO_ESTABLISHED: 1805 if (IS_IQD(card)) 1806 rc = qdio_shutdown(CARD_DDEV(card), 1807 QDIO_FLAG_CLEANUP_USING_HALT); 1808 else 1809 rc = qdio_shutdown(CARD_DDEV(card), 1810 QDIO_FLAG_CLEANUP_USING_CLEAR); 1811 if (rc) 1812 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1813 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1814 break; 1815 case QETH_QDIO_CLEANING: 1816 return rc; 1817 default: 1818 break; 1819 } 1820 rc = qeth_clear_halt_card(card, use_halt); 1821 if (rc) 1822 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1823 return rc; 1824} 1825 1826static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1827{ 1828 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1829 struct diag26c_vnic_resp *response = NULL; 1830 struct diag26c_vnic_req *request = NULL; 1831 struct ccw_dev_id id; 1832 char userid[80]; 1833 int rc = 0; 1834 1835 QETH_CARD_TEXT(card, 2, "vmlayer"); 1836 1837 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1838 if (rc) 1839 goto out; 1840 1841 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1842 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1843 if (!request || !response) { 1844 rc = -ENOMEM; 1845 goto out; 1846 } 1847 1848 ccw_device_get_id(CARD_RDEV(card), &id); 1849 request->resp_buf_len = sizeof(*response); 1850 request->resp_version = DIAG26C_VERSION6_VM65918; 1851 request->req_format = DIAG26C_VNIC_INFO; 1852 ASCEBC(userid, 8); 1853 memcpy(&request->sys_name, userid, 8); 1854 request->devno = id.devno; 1855 1856 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1857 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1858 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1859 if (rc) 1860 goto out; 1861 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1862 1863 if (request->resp_buf_len < sizeof(*response) || 1864 response->version != request->resp_version) { 1865 rc = -EIO; 1866 goto out; 1867 } 1868 1869 if (response->protocol == VNIC_INFO_PROT_L2) 1870 disc = QETH_DISCIPLINE_LAYER2; 1871 else if (response->protocol == VNIC_INFO_PROT_L3) 1872 disc = QETH_DISCIPLINE_LAYER3; 1873 1874out: 1875 kfree(response); 1876 kfree(request); 1877 if (rc) 1878 QETH_CARD_TEXT_(card, 2, "err%x", rc); 1879 return disc; 1880} 1881 1882/* Determine whether the device requires a specific layer discipline */ 1883static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1884{ 1885 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1886 1887 if (IS_OSM(card)) 1888 disc = QETH_DISCIPLINE_LAYER2; 1889 else if (IS_VM_NIC(card)) 1890 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : 1891 qeth_vm_detect_layer(card); 1892 1893 switch (disc) { 1894 case QETH_DISCIPLINE_LAYER2: 1895 QETH_CARD_TEXT(card, 3, "force l2"); 1896 break; 1897 case QETH_DISCIPLINE_LAYER3: 1898 QETH_CARD_TEXT(card, 3, "force l3"); 1899 break; 1900 default: 1901 QETH_CARD_TEXT(card, 3, "force no"); 1902 } 1903 1904 return disc; 1905} 1906 1907static void qeth_set_blkt_defaults(struct qeth_card *card) 1908{ 1909 QETH_CARD_TEXT(card, 2, "cfgblkt"); 1910 1911 if (card->info.use_v1_blkt) { 1912 card->info.blkt.time_total = 0; 1913 card->info.blkt.inter_packet = 0; 1914 card->info.blkt.inter_packet_jumbo = 0; 1915 } else { 1916 card->info.blkt.time_total = 250; 1917 card->info.blkt.inter_packet = 5; 1918 card->info.blkt.inter_packet_jumbo = 15; 1919 } 1920} 1921 1922static void qeth_idx_init(struct qeth_card *card) 1923{ 1924 memset(&card->seqno, 0, sizeof(card->seqno)); 1925 1926 card->token.issuer_rm_w = 0x00010103UL; 1927 card->token.cm_filter_w = 0x00010108UL; 1928 card->token.cm_connection_w = 0x0001010aUL; 1929 card->token.ulp_filter_w = 0x0001010bUL; 1930 card->token.ulp_connection_w = 0x0001010dUL; 1931 1932 switch (card->info.type) { 1933 case QETH_CARD_TYPE_IQD: 1934 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1935 break; 1936 case QETH_CARD_TYPE_OSD: 1937 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1938 break; 1939 default: 1940 break; 1941 } 1942} 1943 1944static void qeth_idx_finalize_cmd(struct qeth_card *card, 1945 struct qeth_cmd_buffer *iob) 1946{ 1947 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr, 1948 QETH_SEQ_NO_LENGTH); 1949 if (iob->channel == &card->write) 1950 card->seqno.trans_hdr++; 1951} 1952 1953static int qeth_peer_func_level(int level) 1954{ 1955 if ((level & 0xff) == 8) 1956 return (level & 0xff) + 0x400; 1957 if (((level >> 8) & 3) == 1) 1958 return (level & 0xff) + 0x200; 1959 return level; 1960} 1961 1962static void qeth_mpc_finalize_cmd(struct qeth_card *card, 1963 struct qeth_cmd_buffer *iob) 1964{ 1965 qeth_idx_finalize_cmd(card, iob); 1966 1967 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 1968 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 1969 card->seqno.pdu_hdr++; 1970 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 1971 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 1972 1973 iob->callback = qeth_release_buffer_cb; 1974} 1975 1976static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob, 1977 struct qeth_cmd_buffer *reply) 1978{ 1979 /* MPC cmds are issued strictly in sequence. */ 1980 return !IS_IPA(reply->data); 1981} 1982 1983static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card, 1984 const void *data, 1985 unsigned int data_length) 1986{ 1987 struct qeth_cmd_buffer *iob; 1988 1989 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT); 1990 if (!iob) 1991 return NULL; 1992 1993 memcpy(iob->data, data, data_length); 1994 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length, 1995 iob->data); 1996 iob->finalize = qeth_mpc_finalize_cmd; 1997 iob->match = qeth_mpc_match_reply; 1998 return iob; 1999} 2000 2001/** 2002 * qeth_send_control_data() - send control command to the card 2003 * @card: qeth_card structure pointer 2004 * @iob: qeth_cmd_buffer pointer 2005 * @reply_cb: callback function pointer 2006 * cb_card: pointer to the qeth_card structure 2007 * cb_reply: pointer to the qeth_reply structure 2008 * cb_cmd: pointer to the original iob for non-IPA 2009 * commands, or to the qeth_ipa_cmd structure 2010 * for the IPA commands. 2011 * @reply_param: private pointer passed to the callback 2012 * 2013 * Callback function gets called one or more times, with cb_cmd 2014 * pointing to the response returned by the hardware. Callback 2015 * function must return 2016 * > 0 if more reply blocks are expected, 2017 * 0 if the last or only reply block is received, and 2018 * < 0 on error. 2019 * Callback function can get the value of the reply_param pointer from the 2020 * field 'param' of the structure qeth_reply. 2021 */ 2022 2023static int qeth_send_control_data(struct qeth_card *card, 2024 struct qeth_cmd_buffer *iob, 2025 int (*reply_cb)(struct qeth_card *cb_card, 2026 struct qeth_reply *cb_reply, 2027 unsigned long cb_cmd), 2028 void *reply_param) 2029{ 2030 struct qeth_channel *channel = iob->channel; 2031 struct qeth_reply *reply = &iob->reply; 2032 long timeout = iob->timeout; 2033 int rc; 2034 2035 QETH_CARD_TEXT(card, 2, "sendctl"); 2036 2037 reply->callback = reply_cb; 2038 reply->param = reply_param; 2039 2040 timeout = wait_event_interruptible_timeout(card->wait_q, 2041 qeth_trylock_channel(channel, iob), 2042 timeout); 2043 if (timeout <= 0) { 2044 qeth_put_cmd(iob); 2045 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; 2046 } 2047 2048 if (iob->finalize) 2049 iob->finalize(card, iob); 2050 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN)); 2051 2052 qeth_enqueue_cmd(card, iob); 2053 2054 /* This pairs with iob->callback, and keeps the iob alive after IO: */ 2055 qeth_get_cmd(iob); 2056 2057 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2058 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 2059 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob), 2060 (addr_t) iob, 0, 0, timeout); 2061 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 2062 if (rc) { 2063 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n", 2064 CARD_DEVID(card), rc); 2065 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2066 qeth_dequeue_cmd(card, iob); 2067 qeth_put_cmd(iob); 2068 qeth_unlock_channel(card, channel); 2069 goto out; 2070 } 2071 2072 timeout = wait_for_completion_interruptible_timeout(&iob->done, 2073 timeout); 2074 if (timeout <= 0) 2075 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; 2076 2077 qeth_dequeue_cmd(card, iob); 2078 2079 if (reply_cb) { 2080 /* Wait until the callback for a late reply has completed: */ 2081 spin_lock_irq(&iob->lock); 2082 if (rc) 2083 /* Zap any callback that's still pending: */ 2084 iob->rc = rc; 2085 spin_unlock_irq(&iob->lock); 2086 } 2087 2088 if (!rc) 2089 rc = iob->rc; 2090 2091out: 2092 qeth_put_cmd(iob); 2093 return rc; 2094} 2095 2096struct qeth_node_desc { 2097 struct node_descriptor nd1; 2098 struct node_descriptor nd2; 2099 struct node_descriptor nd3; 2100}; 2101 2102static void qeth_read_conf_data_cb(struct qeth_card *card, 2103 struct qeth_cmd_buffer *iob, 2104 unsigned int data_length) 2105{ 2106 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data; 2107 int rc = 0; 2108 u8 *tag; 2109 2110 QETH_CARD_TEXT(card, 2, "cfgunit"); 2111 2112 if (data_length < sizeof(*nd)) { 2113 rc = -EINVAL; 2114 goto out; 2115 } 2116 2117 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] && 2118 nd->nd1.plant[1] == _ascebc['M']; 2119 tag = (u8 *)&nd->nd1.tag; 2120 card->info.chpid = tag[0]; 2121 card->info.unit_addr2 = tag[1]; 2122 2123 tag = (u8 *)&nd->nd2.tag; 2124 card->info.cula = tag[1]; 2125 2126 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 && 2127 nd->nd3.model[1] == 0xF0 && 2128 nd->nd3.model[2] >= 0xF1 && 2129 nd->nd3.model[2] <= 0xF4; 2130 2131out: 2132 qeth_notify_cmd(iob, rc); 2133 qeth_put_cmd(iob); 2134} 2135 2136static int qeth_read_conf_data(struct qeth_card *card) 2137{ 2138 struct qeth_channel *channel = &card->data; 2139 struct qeth_cmd_buffer *iob; 2140 struct ciw *ciw; 2141 2142 /* scan for RCD command in extended SenseID data */ 2143 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 2144 if (!ciw || ciw->cmd == 0) 2145 return -EOPNOTSUPP; 2146 if (ciw->count < sizeof(struct qeth_node_desc)) 2147 return -EINVAL; 2148 2149 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT); 2150 if (!iob) 2151 return -ENOMEM; 2152 2153 iob->callback = qeth_read_conf_data_cb; 2154 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length, 2155 iob->data); 2156 2157 return qeth_send_control_data(card, iob, NULL, NULL); 2158} 2159 2160static int qeth_idx_check_activate_response(struct qeth_card *card, 2161 struct qeth_channel *channel, 2162 struct qeth_cmd_buffer *iob) 2163{ 2164 int rc; 2165 2166 rc = qeth_check_idx_response(card, iob->data); 2167 if (rc) 2168 return rc; 2169 2170 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data)) 2171 return 0; 2172 2173 /* negative reply: */ 2174 QETH_CARD_TEXT_(card, 2, "idxneg%c", 2175 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 2176 2177 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 2178 case QETH_IDX_ACT_ERR_EXCL: 2179 dev_err(&channel->ccwdev->dev, 2180 "The adapter is used exclusively by another host\n"); 2181 return -EBUSY; 2182 case QETH_IDX_ACT_ERR_AUTH: 2183 case QETH_IDX_ACT_ERR_AUTH_USER: 2184 dev_err(&channel->ccwdev->dev, 2185 "Setting the device online failed because of insufficient authorization\n"); 2186 return -EPERM; 2187 default: 2188 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n", 2189 CCW_DEVID(channel->ccwdev)); 2190 return -EIO; 2191 } 2192} 2193 2194static void qeth_idx_activate_read_channel_cb(struct qeth_card *card, 2195 struct qeth_cmd_buffer *iob, 2196 unsigned int data_length) 2197{ 2198 struct qeth_channel *channel = iob->channel; 2199 u16 peer_level; 2200 int rc; 2201 2202 QETH_CARD_TEXT(card, 2, "idxrdcb"); 2203 2204 rc = qeth_idx_check_activate_response(card, channel, iob); 2205 if (rc) 2206 goto out; 2207 2208 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2209 if (peer_level != qeth_peer_func_level(card->info.func_level)) { 2210 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", 2211 CCW_DEVID(channel->ccwdev), 2212 card->info.func_level, peer_level); 2213 rc = -EINVAL; 2214 goto out; 2215 } 2216 2217 memcpy(&card->token.issuer_rm_r, 2218 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2219 QETH_MPC_TOKEN_LENGTH); 2220 memcpy(&card->info.mcl_level[0], 2221 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2222 2223out: 2224 qeth_notify_cmd(iob, rc); 2225 qeth_put_cmd(iob); 2226} 2227 2228static void qeth_idx_activate_write_channel_cb(struct qeth_card *card, 2229 struct qeth_cmd_buffer *iob, 2230 unsigned int data_length) 2231{ 2232 struct qeth_channel *channel = iob->channel; 2233 u16 peer_level; 2234 int rc; 2235 2236 QETH_CARD_TEXT(card, 2, "idxwrcb"); 2237 2238 rc = qeth_idx_check_activate_response(card, channel, iob); 2239 if (rc) 2240 goto out; 2241 2242 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2243 if ((peer_level & ~0x0100) != 2244 qeth_peer_func_level(card->info.func_level)) { 2245 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", 2246 CCW_DEVID(channel->ccwdev), 2247 card->info.func_level, peer_level); 2248 rc = -EINVAL; 2249 } 2250 2251out: 2252 qeth_notify_cmd(iob, rc); 2253 qeth_put_cmd(iob); 2254} 2255 2256static void qeth_idx_setup_activate_cmd(struct qeth_card *card, 2257 struct qeth_cmd_buffer *iob) 2258{ 2259 u16 addr = (card->info.cula << 8) + card->info.unit_addr2; 2260 u8 port = ((u8)card->dev->dev_port) | 0x80; 2261 struct ccw1 *ccw = __ccw_from_cmd(iob); 2262 2263 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE, 2264 iob->data); 2265 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data); 2266 iob->finalize = qeth_idx_finalize_cmd; 2267 2268 port |= QETH_IDX_ACT_INVAL_FRAME; 2269 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1); 2270 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2271 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 2272 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2273 &card->info.func_level, 2); 2274 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2); 2275 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2); 2276} 2277 2278static int qeth_idx_activate_read_channel(struct qeth_card *card) 2279{ 2280 struct qeth_channel *channel = &card->read; 2281 struct qeth_cmd_buffer *iob; 2282 int rc; 2283 2284 QETH_CARD_TEXT(card, 2, "idxread"); 2285 2286 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT); 2287 if (!iob) 2288 return -ENOMEM; 2289 2290 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 2291 qeth_idx_setup_activate_cmd(card, iob); 2292 iob->callback = qeth_idx_activate_read_channel_cb; 2293 2294 rc = qeth_send_control_data(card, iob, NULL, NULL); 2295 if (rc) 2296 return rc; 2297 2298 channel->state = CH_STATE_UP; 2299 return 0; 2300} 2301 2302static int qeth_idx_activate_write_channel(struct qeth_card *card) 2303{ 2304 struct qeth_channel *channel = &card->write; 2305 struct qeth_cmd_buffer *iob; 2306 int rc; 2307 2308 QETH_CARD_TEXT(card, 2, "idxwrite"); 2309 2310 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT); 2311 if (!iob) 2312 return -ENOMEM; 2313 2314 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 2315 qeth_idx_setup_activate_cmd(card, iob); 2316 iob->callback = qeth_idx_activate_write_channel_cb; 2317 2318 rc = qeth_send_control_data(card, iob, NULL, NULL); 2319 if (rc) 2320 return rc; 2321 2322 channel->state = CH_STATE_UP; 2323 return 0; 2324} 2325 2326static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2327 unsigned long data) 2328{ 2329 struct qeth_cmd_buffer *iob; 2330 2331 QETH_CARD_TEXT(card, 2, "cmenblcb"); 2332 2333 iob = (struct qeth_cmd_buffer *) data; 2334 memcpy(&card->token.cm_filter_r, 2335 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2336 QETH_MPC_TOKEN_LENGTH); 2337 return 0; 2338} 2339 2340static int qeth_cm_enable(struct qeth_card *card) 2341{ 2342 struct qeth_cmd_buffer *iob; 2343 2344 QETH_CARD_TEXT(card, 2, "cmenable"); 2345 2346 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE); 2347 if (!iob) 2348 return -ENOMEM; 2349 2350 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2351 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2352 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2353 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2354 2355 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL); 2356} 2357 2358static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2359 unsigned long data) 2360{ 2361 struct qeth_cmd_buffer *iob; 2362 2363 QETH_CARD_TEXT(card, 2, "cmsetpcb"); 2364 2365 iob = (struct qeth_cmd_buffer *) data; 2366 memcpy(&card->token.cm_connection_r, 2367 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2368 QETH_MPC_TOKEN_LENGTH); 2369 return 0; 2370} 2371 2372static int qeth_cm_setup(struct qeth_card *card) 2373{ 2374 struct qeth_cmd_buffer *iob; 2375 2376 QETH_CARD_TEXT(card, 2, "cmsetup"); 2377 2378 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE); 2379 if (!iob) 2380 return -ENOMEM; 2381 2382 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2383 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2384 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2385 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2386 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2387 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2388 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL); 2389} 2390 2391static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type) 2392{ 2393 if (link_type == QETH_LINK_TYPE_LANE_TR || 2394 link_type == QETH_LINK_TYPE_HSTR) { 2395 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n"); 2396 return false; 2397 } 2398 2399 return true; 2400} 2401 2402static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu) 2403{ 2404 struct net_device *dev = card->dev; 2405 unsigned int new_mtu; 2406 2407 if (!max_mtu) { 2408 /* IQD needs accurate max MTU to set up its RX buffers: */ 2409 if (IS_IQD(card)) 2410 return -EINVAL; 2411 /* tolerate quirky HW: */ 2412 max_mtu = ETH_MAX_MTU; 2413 } 2414 2415 rtnl_lock(); 2416 if (IS_IQD(card)) { 2417 /* move any device with default MTU to new max MTU: */ 2418 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu; 2419 2420 /* adjust RX buffer size to new max MTU: */ 2421 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE; 2422 if (dev->max_mtu && dev->max_mtu != max_mtu) 2423 qeth_free_qdio_queues(card); 2424 } else { 2425 if (dev->mtu) 2426 new_mtu = dev->mtu; 2427 /* default MTUs for first setup: */ 2428 else if (IS_LAYER2(card)) 2429 new_mtu = ETH_DATA_LEN; 2430 else 2431 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */ 2432 } 2433 2434 dev->max_mtu = max_mtu; 2435 dev->mtu = min(new_mtu, max_mtu); 2436 rtnl_unlock(); 2437 return 0; 2438} 2439 2440static int qeth_get_mtu_outof_framesize(int framesize) 2441{ 2442 switch (framesize) { 2443 case 0x4000: 2444 return 8192; 2445 case 0x6000: 2446 return 16384; 2447 case 0xa000: 2448 return 32768; 2449 case 0xffff: 2450 return 57344; 2451 default: 2452 return 0; 2453 } 2454} 2455 2456static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2457 unsigned long data) 2458{ 2459 __u16 mtu, framesize; 2460 __u16 len; 2461 struct qeth_cmd_buffer *iob; 2462 u8 link_type = 0; 2463 2464 QETH_CARD_TEXT(card, 2, "ulpenacb"); 2465 2466 iob = (struct qeth_cmd_buffer *) data; 2467 memcpy(&card->token.ulp_filter_r, 2468 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2469 QETH_MPC_TOKEN_LENGTH); 2470 if (IS_IQD(card)) { 2471 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2472 mtu = qeth_get_mtu_outof_framesize(framesize); 2473 } else { 2474 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data); 2475 } 2476 *(u16 *)reply->param = mtu; 2477 2478 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2479 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2480 memcpy(&link_type, 2481 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2482 if (!qeth_is_supported_link_type(card, link_type)) 2483 return -EPROTONOSUPPORT; 2484 } 2485 2486 card->info.link_type = link_type; 2487 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type); 2488 return 0; 2489} 2490 2491static u8 qeth_mpc_select_prot_type(struct qeth_card *card) 2492{ 2493 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3; 2494} 2495 2496static int qeth_ulp_enable(struct qeth_card *card) 2497{ 2498 u8 prot_type = qeth_mpc_select_prot_type(card); 2499 struct qeth_cmd_buffer *iob; 2500 u16 max_mtu; 2501 int rc; 2502 2503 QETH_CARD_TEXT(card, 2, "ulpenabl"); 2504 2505 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE); 2506 if (!iob) 2507 return -ENOMEM; 2508 2509 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port; 2510 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2511 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2512 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2513 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2514 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2515 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu); 2516 if (rc) 2517 return rc; 2518 return qeth_update_max_mtu(card, max_mtu); 2519} 2520 2521static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2522 unsigned long data) 2523{ 2524 struct qeth_cmd_buffer *iob; 2525 2526 QETH_CARD_TEXT(card, 2, "ulpstpcb"); 2527 2528 iob = (struct qeth_cmd_buffer *) data; 2529 memcpy(&card->token.ulp_connection_r, 2530 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2531 QETH_MPC_TOKEN_LENGTH); 2532 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2533 3)) { 2534 QETH_CARD_TEXT(card, 2, "olmlimit"); 2535 dev_err(&card->gdev->dev, "A connection could not be " 2536 "established because of an OLM limit\n"); 2537 return -EMLINK; 2538 } 2539 return 0; 2540} 2541 2542static int qeth_ulp_setup(struct qeth_card *card) 2543{ 2544 __u16 temp; 2545 struct qeth_cmd_buffer *iob; 2546 2547 QETH_CARD_TEXT(card, 2, "ulpsetup"); 2548 2549 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE); 2550 if (!iob) 2551 return -ENOMEM; 2552 2553 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2554 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2555 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2556 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2557 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2558 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2559 2560 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2); 2561 temp = (card->info.cula << 8) + card->info.unit_addr2; 2562 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2563 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL); 2564} 2565 2566static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx, 2567 gfp_t gfp) 2568{ 2569 struct qeth_qdio_out_buffer *newbuf; 2570 2571 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp); 2572 if (!newbuf) 2573 return -ENOMEM; 2574 2575 newbuf->buffer = q->qdio_bufs[bidx]; 2576 skb_queue_head_init(&newbuf->skb_list); 2577 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2578 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2579 q->bufs[bidx] = newbuf; 2580 return 0; 2581} 2582 2583static void qeth_free_output_queue(struct qeth_qdio_out_q *q) 2584{ 2585 if (!q) 2586 return; 2587 2588 qeth_drain_output_queue(q, true); 2589 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2590 kfree(q); 2591} 2592 2593static struct qeth_qdio_out_q *qeth_alloc_output_queue(void) 2594{ 2595 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2596 unsigned int i; 2597 2598 if (!q) 2599 return NULL; 2600 2601 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) 2602 goto err_qdio_bufs; 2603 2604 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) { 2605 if (qeth_alloc_out_buf(q, i, GFP_KERNEL)) 2606 goto err_out_bufs; 2607 } 2608 2609 return q; 2610 2611err_out_bufs: 2612 while (i > 0) 2613 qeth_free_out_buf(q->bufs[--i]); 2614 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2615err_qdio_bufs: 2616 kfree(q); 2617 return NULL; 2618} 2619 2620static void qeth_tx_completion_timer(struct timer_list *timer) 2621{ 2622 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer); 2623 2624 napi_schedule(&queue->napi); 2625 QETH_TXQ_STAT_INC(queue, completion_timer); 2626} 2627 2628static int qeth_alloc_qdio_queues(struct qeth_card *card) 2629{ 2630 unsigned int i; 2631 2632 QETH_CARD_TEXT(card, 2, "allcqdbf"); 2633 2634 /* completion */ 2635 if (qeth_alloc_cq(card)) 2636 goto out_err; 2637 2638 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2639 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2640 return 0; 2641 2642 /* inbound buffer pool */ 2643 if (qeth_alloc_buffer_pool(card)) 2644 goto out_buffer_pool; 2645 2646 /* outbound */ 2647 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2648 struct qeth_qdio_out_q *queue; 2649 2650 queue = qeth_alloc_output_queue(); 2651 if (!queue) 2652 goto out_freeoutq; 2653 QETH_CARD_TEXT_(card, 2, "outq %i", i); 2654 QETH_CARD_HEX(card, 2, &queue, sizeof(void *)); 2655 card->qdio.out_qs[i] = queue; 2656 queue->card = card; 2657 queue->queue_no = i; 2658 INIT_LIST_HEAD(&queue->pending_bufs); 2659 spin_lock_init(&queue->lock); 2660 timer_setup(&queue->timer, qeth_tx_completion_timer, 0); 2661 if (IS_IQD(card)) { 2662 queue->coalesce_usecs = QETH_TX_COALESCE_USECS; 2663 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES; 2664 queue->rescan_usecs = QETH_TX_TIMER_USECS; 2665 } else { 2666 queue->coalesce_usecs = USEC_PER_SEC; 2667 queue->max_coalesced_frames = 0; 2668 queue->rescan_usecs = 10 * USEC_PER_SEC; 2669 } 2670 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT; 2671 } 2672 2673 return 0; 2674 2675out_freeoutq: 2676 while (i > 0) { 2677 qeth_free_output_queue(card->qdio.out_qs[--i]); 2678 card->qdio.out_qs[i] = NULL; 2679 } 2680 qeth_free_buffer_pool(card); 2681out_buffer_pool: 2682 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2683 qeth_free_cq(card); 2684out_err: 2685 return -ENOMEM; 2686} 2687 2688static void qeth_free_qdio_queues(struct qeth_card *card) 2689{ 2690 int i, j; 2691 2692 qeth_free_cq(card); 2693 2694 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2695 QETH_QDIO_UNINITIALIZED) 2696 return; 2697 2698 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2699 if (card->qdio.in_q->bufs[j].rx_skb) { 2700 consume_skb(card->qdio.in_q->bufs[j].rx_skb); 2701 card->qdio.in_q->bufs[j].rx_skb = NULL; 2702 } 2703 } 2704 2705 /* inbound buffer pool */ 2706 qeth_free_buffer_pool(card); 2707 /* free outbound qdio_qs */ 2708 for (i = 0; i < card->qdio.no_out_queues; i++) { 2709 qeth_free_output_queue(card->qdio.out_qs[i]); 2710 card->qdio.out_qs[i] = NULL; 2711 } 2712} 2713 2714static void qeth_fill_qib_parms(struct qeth_card *card, 2715 struct qeth_qib_parms *parms) 2716{ 2717 struct qeth_qdio_out_q *queue; 2718 unsigned int i; 2719 2720 parms->pcit_magic[0] = 'P'; 2721 parms->pcit_magic[1] = 'C'; 2722 parms->pcit_magic[2] = 'I'; 2723 parms->pcit_magic[3] = 'T'; 2724 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic)); 2725 parms->pcit_a = QETH_PCI_THRESHOLD_A(card); 2726 parms->pcit_b = QETH_PCI_THRESHOLD_B(card); 2727 parms->pcit_c = QETH_PCI_TIMER_VALUE(card); 2728 2729 parms->blkt_magic[0] = 'B'; 2730 parms->blkt_magic[1] = 'L'; 2731 parms->blkt_magic[2] = 'K'; 2732 parms->blkt_magic[3] = 'T'; 2733 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic)); 2734 parms->blkt_total = card->info.blkt.time_total; 2735 parms->blkt_inter_packet = card->info.blkt.inter_packet; 2736 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo; 2737 2738 /* Prio-queueing implicitly uses the default priorities: */ 2739 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1) 2740 return; 2741 2742 parms->pque_magic[0] = 'P'; 2743 parms->pque_magic[1] = 'Q'; 2744 parms->pque_magic[2] = 'U'; 2745 parms->pque_magic[3] = 'E'; 2746 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic)); 2747 parms->pque_order = QETH_QIB_PQUE_ORDER_RR; 2748 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL; 2749 2750 qeth_for_each_output_queue(card, queue, i) 2751 parms->pque_priority[i] = queue->priority; 2752} 2753 2754static int qeth_qdio_activate(struct qeth_card *card) 2755{ 2756 QETH_CARD_TEXT(card, 3, "qdioact"); 2757 return qdio_activate(CARD_DDEV(card)); 2758} 2759 2760static int qeth_dm_act(struct qeth_card *card) 2761{ 2762 struct qeth_cmd_buffer *iob; 2763 2764 QETH_CARD_TEXT(card, 2, "dmact"); 2765 2766 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE); 2767 if (!iob) 2768 return -ENOMEM; 2769 2770 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2771 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2772 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2773 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2774 return qeth_send_control_data(card, iob, NULL, NULL); 2775} 2776 2777static int qeth_mpc_initialize(struct qeth_card *card) 2778{ 2779 int rc; 2780 2781 QETH_CARD_TEXT(card, 2, "mpcinit"); 2782 2783 rc = qeth_issue_next_read(card); 2784 if (rc) { 2785 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 2786 return rc; 2787 } 2788 rc = qeth_cm_enable(card); 2789 if (rc) { 2790 QETH_CARD_TEXT_(card, 2, "2err%d", rc); 2791 return rc; 2792 } 2793 rc = qeth_cm_setup(card); 2794 if (rc) { 2795 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 2796 return rc; 2797 } 2798 rc = qeth_ulp_enable(card); 2799 if (rc) { 2800 QETH_CARD_TEXT_(card, 2, "4err%d", rc); 2801 return rc; 2802 } 2803 rc = qeth_ulp_setup(card); 2804 if (rc) { 2805 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 2806 return rc; 2807 } 2808 rc = qeth_alloc_qdio_queues(card); 2809 if (rc) { 2810 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 2811 return rc; 2812 } 2813 rc = qeth_qdio_establish(card); 2814 if (rc) { 2815 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 2816 qeth_free_qdio_queues(card); 2817 return rc; 2818 } 2819 rc = qeth_qdio_activate(card); 2820 if (rc) { 2821 QETH_CARD_TEXT_(card, 2, "7err%d", rc); 2822 return rc; 2823 } 2824 rc = qeth_dm_act(card); 2825 if (rc) { 2826 QETH_CARD_TEXT_(card, 2, "8err%d", rc); 2827 return rc; 2828 } 2829 2830 return 0; 2831} 2832 2833static void qeth_print_status_message(struct qeth_card *card) 2834{ 2835 switch (card->info.type) { 2836 case QETH_CARD_TYPE_OSD: 2837 case QETH_CARD_TYPE_OSM: 2838 case QETH_CARD_TYPE_OSX: 2839 /* VM will use a non-zero first character 2840 * to indicate a HiperSockets like reporting 2841 * of the level OSA sets the first character to zero 2842 * */ 2843 if (!card->info.mcl_level[0]) { 2844 scnprintf(card->info.mcl_level, 2845 sizeof(card->info.mcl_level), 2846 "%02x%02x", 2847 card->info.mcl_level[2], 2848 card->info.mcl_level[3]); 2849 break; 2850 } 2851 fallthrough; 2852 case QETH_CARD_TYPE_IQD: 2853 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) { 2854 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2855 card->info.mcl_level[0]]; 2856 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2857 card->info.mcl_level[1]]; 2858 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2859 card->info.mcl_level[2]]; 2860 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2861 card->info.mcl_level[3]]; 2862 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2863 } 2864 break; 2865 default: 2866 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2867 } 2868 dev_info(&card->gdev->dev, 2869 "Device is a%s card%s%s%s\nwith link type %s.\n", 2870 qeth_get_cardname(card), 2871 (card->info.mcl_level[0]) ? " (level: " : "", 2872 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2873 (card->info.mcl_level[0]) ? ")" : "", 2874 qeth_get_cardname_short(card)); 2875} 2876 2877static void qeth_initialize_working_pool_list(struct qeth_card *card) 2878{ 2879 struct qeth_buffer_pool_entry *entry; 2880 2881 QETH_CARD_TEXT(card, 5, "inwrklst"); 2882 2883 list_for_each_entry(entry, 2884 &card->qdio.init_pool.entry_list, init_list) { 2885 qeth_put_buffer_pool_entry(card, entry); 2886 } 2887} 2888 2889static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2890 struct qeth_card *card) 2891{ 2892 struct qeth_buffer_pool_entry *entry; 2893 int i, free; 2894 2895 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2896 return NULL; 2897 2898 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) { 2899 free = 1; 2900 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2901 if (page_count(entry->elements[i]) > 1) { 2902 free = 0; 2903 break; 2904 } 2905 } 2906 if (free) { 2907 list_del_init(&entry->list); 2908 return entry; 2909 } 2910 } 2911 2912 /* no free buffer in pool so take first one and swap pages */ 2913 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list, 2914 struct qeth_buffer_pool_entry, list); 2915 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2916 if (page_count(entry->elements[i]) > 1) { 2917 struct page *page = dev_alloc_page(); 2918 2919 if (!page) 2920 return NULL; 2921 2922 __free_page(entry->elements[i]); 2923 entry->elements[i] = page; 2924 QETH_CARD_STAT_INC(card, rx_sg_alloc_page); 2925 } 2926 } 2927 list_del_init(&entry->list); 2928 return entry; 2929} 2930 2931static int qeth_init_input_buffer(struct qeth_card *card, 2932 struct qeth_qdio_buffer *buf) 2933{ 2934 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry; 2935 int i; 2936 2937 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2938 buf->rx_skb = netdev_alloc_skb(card->dev, 2939 ETH_HLEN + 2940 sizeof(struct ipv6hdr)); 2941 if (!buf->rx_skb) 2942 return -ENOMEM; 2943 } 2944 2945 if (!pool_entry) { 2946 pool_entry = qeth_find_free_buffer_pool_entry(card); 2947 if (!pool_entry) 2948 return -ENOBUFS; 2949 2950 buf->pool_entry = pool_entry; 2951 } 2952 2953 /* 2954 * since the buffer is accessed only from the input_tasklet 2955 * there shouldn't be a need to synchronize; also, since we use 2956 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2957 * buffers 2958 */ 2959 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2960 buf->buffer->element[i].length = PAGE_SIZE; 2961 buf->buffer->element[i].addr = u64_to_dma64( 2962 page_to_phys(pool_entry->elements[i])); 2963 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2964 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2965 else 2966 buf->buffer->element[i].eflags = 0; 2967 buf->buffer->element[i].sflags = 0; 2968 } 2969 return 0; 2970} 2971 2972static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card, 2973 struct qeth_qdio_out_q *queue) 2974{ 2975 if (!IS_IQD(card) || 2976 qeth_iqd_is_mcast_queue(card, queue) || 2977 card->options.cq == QETH_CQ_ENABLED || 2978 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd)) 2979 return 1; 2980 2981 return card->ssqd.mmwc ? card->ssqd.mmwc : 1; 2982} 2983 2984static int qeth_init_qdio_queues(struct qeth_card *card) 2985{ 2986 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count; 2987 unsigned int i; 2988 int rc; 2989 2990 QETH_CARD_TEXT(card, 2, "initqdqs"); 2991 2992 /* inbound queue */ 2993 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2994 memset(&card->rx, 0, sizeof(struct qeth_rx)); 2995 2996 qeth_initialize_working_pool_list(card); 2997 /*give only as many buffers to hardware as we have buffer pool entries*/ 2998 for (i = 0; i < rx_bufs; i++) { 2999 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 3000 if (rc) 3001 return rc; 3002 } 3003 3004 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs); 3005 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 0, rx_bufs); 3006 if (rc) { 3007 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 3008 return rc; 3009 } 3010 3011 /* completion */ 3012 rc = qeth_cq_init(card); 3013 if (rc) { 3014 return rc; 3015 } 3016 3017 /* outbound queue */ 3018 for (i = 0; i < card->qdio.no_out_queues; ++i) { 3019 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i]; 3020 3021 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 3022 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card); 3023 queue->next_buf_to_fill = 0; 3024 queue->do_pack = 0; 3025 queue->prev_hdr = NULL; 3026 queue->coalesced_frames = 0; 3027 queue->bulk_start = 0; 3028 queue->bulk_count = 0; 3029 queue->bulk_max = qeth_tx_select_bulk_max(card, queue); 3030 atomic_set(&queue->used_buffers, 0); 3031 atomic_set(&queue->set_pci_flags_count, 0); 3032 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i)); 3033 } 3034 return 0; 3035} 3036 3037static void qeth_ipa_finalize_cmd(struct qeth_card *card, 3038 struct qeth_cmd_buffer *iob) 3039{ 3040 qeth_mpc_finalize_cmd(card, iob); 3041 3042 /* override with IPA-specific values: */ 3043 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++; 3044} 3045 3046static void qeth_prepare_ipa_cmd(struct qeth_card *card, 3047 struct qeth_cmd_buffer *iob, u16 cmd_length) 3048{ 3049 u8 prot_type = qeth_mpc_select_prot_type(card); 3050 u16 total_length = iob->length; 3051 3052 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length, 3053 iob->data); 3054 iob->finalize = qeth_ipa_finalize_cmd; 3055 3056 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 3057 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2); 3058 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 3059 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2); 3060 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2); 3061 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 3062 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 3063 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2); 3064} 3065 3066static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob, 3067 struct qeth_cmd_buffer *reply) 3068{ 3069 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply); 3070 3071 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno); 3072} 3073 3074struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 3075 enum qeth_ipa_cmds cmd_code, 3076 enum qeth_prot_versions prot, 3077 unsigned int data_length) 3078{ 3079 struct qeth_cmd_buffer *iob; 3080 struct qeth_ipacmd_hdr *hdr; 3081 3082 data_length += offsetof(struct qeth_ipa_cmd, data); 3083 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1, 3084 QETH_IPA_TIMEOUT); 3085 if (!iob) 3086 return NULL; 3087 3088 qeth_prepare_ipa_cmd(card, iob, data_length); 3089 iob->match = qeth_ipa_match_reply; 3090 3091 hdr = &__ipa_cmd(iob)->hdr; 3092 hdr->command = cmd_code; 3093 hdr->initiator = IPA_CMD_INITIATOR_HOST; 3094 /* hdr->seqno is set by qeth_send_control_data() */ 3095 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH; 3096 hdr->rel_adapter_no = (u8) card->dev->dev_port; 3097 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1; 3098 hdr->param_count = 1; 3099 hdr->prot_version = prot; 3100 return iob; 3101} 3102EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd); 3103 3104static int qeth_send_ipa_cmd_cb(struct qeth_card *card, 3105 struct qeth_reply *reply, unsigned long data) 3106{ 3107 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3108 3109 return (cmd->hdr.return_code) ? -EIO : 0; 3110} 3111 3112/* 3113 * qeth_send_ipa_cmd() - send an IPA command 3114 * 3115 * See qeth_send_control_data() for explanation of the arguments. 3116 */ 3117 3118int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 3119 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 3120 unsigned long), 3121 void *reply_param) 3122{ 3123 int rc; 3124 3125 QETH_CARD_TEXT(card, 4, "sendipa"); 3126 3127 if (card->read_or_write_problem) { 3128 qeth_put_cmd(iob); 3129 return -EIO; 3130 } 3131 3132 if (reply_cb == NULL) 3133 reply_cb = qeth_send_ipa_cmd_cb; 3134 rc = qeth_send_control_data(card, iob, reply_cb, reply_param); 3135 if (rc == -ETIME) { 3136 qeth_clear_ipacmd_list(card); 3137 qeth_schedule_recovery(card); 3138 } 3139 return rc; 3140} 3141EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 3142 3143static int qeth_send_startlan_cb(struct qeth_card *card, 3144 struct qeth_reply *reply, unsigned long data) 3145{ 3146 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3147 3148 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE) 3149 return -ENETDOWN; 3150 3151 return (cmd->hdr.return_code) ? -EIO : 0; 3152} 3153 3154static int qeth_send_startlan(struct qeth_card *card) 3155{ 3156 struct qeth_cmd_buffer *iob; 3157 3158 QETH_CARD_TEXT(card, 2, "strtlan"); 3159 3160 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0); 3161 if (!iob) 3162 return -ENOMEM; 3163 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL); 3164} 3165 3166static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) 3167{ 3168 if (!cmd->hdr.return_code) 3169 cmd->hdr.return_code = 3170 cmd->data.setadapterparms.hdr.return_code; 3171 return cmd->hdr.return_code; 3172} 3173 3174static int qeth_query_setadapterparms_cb(struct qeth_card *card, 3175 struct qeth_reply *reply, unsigned long data) 3176{ 3177 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3178 struct qeth_query_cmds_supp *query_cmd; 3179 3180 QETH_CARD_TEXT(card, 3, "quyadpcb"); 3181 if (qeth_setadpparms_inspect_rc(cmd)) 3182 return -EIO; 3183 3184 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp; 3185 if (query_cmd->lan_type & 0x7f) { 3186 if (!qeth_is_supported_link_type(card, query_cmd->lan_type)) 3187 return -EPROTONOSUPPORT; 3188 3189 card->info.link_type = query_cmd->lan_type; 3190 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type); 3191 } 3192 3193 card->options.adp.supported = query_cmd->supported_cmds; 3194 return 0; 3195} 3196 3197static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 3198 enum qeth_ipa_setadp_cmd adp_cmd, 3199 unsigned int data_length) 3200{ 3201 struct qeth_ipacmd_setadpparms_hdr *hdr; 3202 struct qeth_cmd_buffer *iob; 3203 3204 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4, 3205 data_length + 3206 offsetof(struct qeth_ipacmd_setadpparms, 3207 data)); 3208 if (!iob) 3209 return NULL; 3210 3211 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr; 3212 hdr->cmdlength = sizeof(*hdr) + data_length; 3213 hdr->command_code = adp_cmd; 3214 hdr->used_total = 1; 3215 hdr->seq_no = 1; 3216 return iob; 3217} 3218 3219static int qeth_query_setadapterparms(struct qeth_card *card) 3220{ 3221 int rc; 3222 struct qeth_cmd_buffer *iob; 3223 3224 QETH_CARD_TEXT(card, 3, "queryadp"); 3225 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3226 SETADP_DATA_SIZEOF(query_cmds_supp)); 3227 if (!iob) 3228 return -ENOMEM; 3229 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3230 return rc; 3231} 3232 3233static int qeth_query_ipassists_cb(struct qeth_card *card, 3234 struct qeth_reply *reply, unsigned long data) 3235{ 3236 struct qeth_ipa_cmd *cmd; 3237 3238 QETH_CARD_TEXT(card, 2, "qipasscb"); 3239 3240 cmd = (struct qeth_ipa_cmd *) data; 3241 3242 switch (cmd->hdr.return_code) { 3243 case IPA_RC_SUCCESS: 3244 break; 3245 case IPA_RC_NOTSUPP: 3246 case IPA_RC_L2_UNSUPPORTED_CMD: 3247 QETH_CARD_TEXT(card, 2, "ipaunsup"); 3248 card->options.ipa4.supported |= IPA_SETADAPTERPARMS; 3249 card->options.ipa6.supported |= IPA_SETADAPTERPARMS; 3250 return -EOPNOTSUPP; 3251 default: 3252 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n", 3253 CARD_DEVID(card), cmd->hdr.return_code); 3254 return -EIO; 3255 } 3256 3257 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 3258 card->options.ipa4 = cmd->hdr.assists; 3259 else if (cmd->hdr.prot_version == QETH_PROT_IPV6) 3260 card->options.ipa6 = cmd->hdr.assists; 3261 else 3262 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n", 3263 CARD_DEVID(card)); 3264 return 0; 3265} 3266 3267static int qeth_query_ipassists(struct qeth_card *card, 3268 enum qeth_prot_versions prot) 3269{ 3270 int rc; 3271 struct qeth_cmd_buffer *iob; 3272 3273 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot); 3274 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0); 3275 if (!iob) 3276 return -ENOMEM; 3277 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3278 return rc; 3279} 3280 3281static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3282 struct qeth_reply *reply, unsigned long data) 3283{ 3284 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3285 struct qeth_query_switch_attributes *attrs; 3286 struct qeth_switch_info *sw_info; 3287 3288 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3289 if (qeth_setadpparms_inspect_rc(cmd)) 3290 return -EIO; 3291 3292 sw_info = (struct qeth_switch_info *)reply->param; 3293 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3294 sw_info->capabilities = attrs->capabilities; 3295 sw_info->settings = attrs->settings; 3296 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3297 sw_info->settings); 3298 return 0; 3299} 3300 3301int qeth_query_switch_attributes(struct qeth_card *card, 3302 struct qeth_switch_info *sw_info) 3303{ 3304 struct qeth_cmd_buffer *iob; 3305 3306 QETH_CARD_TEXT(card, 2, "qswiattr"); 3307 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3308 return -EOPNOTSUPP; 3309 if (!netif_carrier_ok(card->dev)) 3310 return -ENOMEDIUM; 3311 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0); 3312 if (!iob) 3313 return -ENOMEM; 3314 return qeth_send_ipa_cmd(card, iob, 3315 qeth_query_switch_attributes_cb, sw_info); 3316} 3317 3318struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 3319 enum qeth_diags_cmds sub_cmd, 3320 unsigned int data_length) 3321{ 3322 struct qeth_ipacmd_diagass *cmd; 3323 struct qeth_cmd_buffer *iob; 3324 3325 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE, 3326 DIAG_HDR_LEN + data_length); 3327 if (!iob) 3328 return NULL; 3329 3330 cmd = &__ipa_cmd(iob)->data.diagass; 3331 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length; 3332 cmd->subcmd = sub_cmd; 3333 return iob; 3334} 3335EXPORT_SYMBOL_GPL(qeth_get_diag_cmd); 3336 3337static int qeth_query_setdiagass_cb(struct qeth_card *card, 3338 struct qeth_reply *reply, unsigned long data) 3339{ 3340 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3341 u16 rc = cmd->hdr.return_code; 3342 3343 if (rc) { 3344 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3345 return -EIO; 3346 } 3347 3348 card->info.diagass_support = cmd->data.diagass.ext; 3349 return 0; 3350} 3351 3352static int qeth_query_setdiagass(struct qeth_card *card) 3353{ 3354 struct qeth_cmd_buffer *iob; 3355 3356 QETH_CARD_TEXT(card, 2, "qdiagass"); 3357 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0); 3358 if (!iob) 3359 return -ENOMEM; 3360 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3361} 3362 3363static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3364{ 3365 unsigned long info = get_zeroed_page(GFP_KERNEL); 3366 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3367 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3368 struct ccw_dev_id ccwid; 3369 int level; 3370 3371 tid->chpid = card->info.chpid; 3372 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3373 tid->ssid = ccwid.ssid; 3374 tid->devno = ccwid.devno; 3375 if (!info) 3376 return; 3377 level = stsi(NULL, 0, 0, 0); 3378 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3379 tid->lparnr = info222->lpar_number; 3380 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3381 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3382 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3383 } 3384 free_page(info); 3385} 3386 3387static int qeth_hw_trap_cb(struct qeth_card *card, 3388 struct qeth_reply *reply, unsigned long data) 3389{ 3390 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 3391 u16 rc = cmd->hdr.return_code; 3392 3393 if (rc) { 3394 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3395 return -EIO; 3396 } 3397 return 0; 3398} 3399 3400int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3401{ 3402 struct qeth_cmd_buffer *iob; 3403 struct qeth_ipa_cmd *cmd; 3404 3405 QETH_CARD_TEXT(card, 2, "diagtrap"); 3406 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64); 3407 if (!iob) 3408 return -ENOMEM; 3409 cmd = __ipa_cmd(iob); 3410 cmd->data.diagass.type = 1; 3411 cmd->data.diagass.action = action; 3412 switch (action) { 3413 case QETH_DIAGS_TRAP_ARM: 3414 cmd->data.diagass.options = 0x0003; 3415 cmd->data.diagass.ext = 0x00010000 + 3416 sizeof(struct qeth_trap_id); 3417 qeth_get_trap_id(card, 3418 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3419 break; 3420 case QETH_DIAGS_TRAP_DISARM: 3421 cmd->data.diagass.options = 0x0001; 3422 break; 3423 case QETH_DIAGS_TRAP_CAPTURE: 3424 break; 3425 } 3426 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3427} 3428 3429static int qeth_check_qdio_errors(struct qeth_card *card, 3430 struct qdio_buffer *buf, 3431 unsigned int qdio_error, 3432 const char *dbftext) 3433{ 3434 if (qdio_error) { 3435 QETH_CARD_TEXT(card, 2, dbftext); 3436 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3437 buf->element[15].sflags); 3438 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3439 buf->element[14].sflags); 3440 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3441 if ((buf->element[15].sflags) == 0x12) { 3442 QETH_CARD_STAT_INC(card, rx_fifo_errors); 3443 return 0; 3444 } else 3445 return 1; 3446 } 3447 return 0; 3448} 3449 3450static unsigned int qeth_rx_refill_queue(struct qeth_card *card, 3451 unsigned int count) 3452{ 3453 struct qeth_qdio_q *queue = card->qdio.in_q; 3454 struct list_head *lh; 3455 int i; 3456 int rc; 3457 int newcount = 0; 3458 3459 /* only requeue at a certain threshold to avoid SIGAs */ 3460 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3461 for (i = queue->next_buf_to_init; 3462 i < queue->next_buf_to_init + count; ++i) { 3463 if (qeth_init_input_buffer(card, 3464 &queue->bufs[QDIO_BUFNR(i)])) { 3465 break; 3466 } else { 3467 newcount++; 3468 } 3469 } 3470 3471 if (newcount < count) { 3472 /* we are in memory shortage so we switch back to 3473 traditional skb allocation and drop packages */ 3474 atomic_set(&card->force_alloc_skb, 3); 3475 count = newcount; 3476 } else { 3477 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3478 } 3479 3480 if (!count) { 3481 i = 0; 3482 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3483 i++; 3484 if (i == card->qdio.in_buf_pool.buf_count) { 3485 QETH_CARD_TEXT(card, 2, "qsarbw"); 3486 schedule_delayed_work( 3487 &card->buffer_reclaim_work, 3488 QETH_RECLAIM_WORK_TIME); 3489 } 3490 return 0; 3491 } 3492 3493 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 3494 queue->next_buf_to_init, 3495 count); 3496 if (rc) { 3497 QETH_CARD_TEXT(card, 2, "qinberr"); 3498 } 3499 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init + 3500 count); 3501 return count; 3502 } 3503 3504 return 0; 3505} 3506 3507static void qeth_buffer_reclaim_work(struct work_struct *work) 3508{ 3509 struct qeth_card *card = container_of(to_delayed_work(work), 3510 struct qeth_card, 3511 buffer_reclaim_work); 3512 3513 local_bh_disable(); 3514 napi_schedule(&card->napi); 3515 /* kick-start the NAPI softirq: */ 3516 local_bh_enable(); 3517} 3518 3519static void qeth_handle_send_error(struct qeth_card *card, 3520 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3521{ 3522 int sbalf15 = buffer->buffer->element[15].sflags; 3523 3524 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3525 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3526 3527 if (!qdio_err) 3528 return; 3529 3530 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3531 return; 3532 3533 QETH_CARD_TEXT(card, 1, "lnkfail"); 3534 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3535 (u16)qdio_err, (u8)sbalf15); 3536} 3537 3538/** 3539 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3540 * @queue: queue to check for packing buffer 3541 * 3542 * Returns number of buffers that were prepared for flush. 3543 */ 3544static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3545{ 3546 struct qeth_qdio_out_buffer *buffer; 3547 3548 buffer = queue->bufs[queue->next_buf_to_fill]; 3549 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3550 (buffer->next_element_to_fill > 0)) { 3551 /* it's a packing buffer */ 3552 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3553 queue->next_buf_to_fill = 3554 QDIO_BUFNR(queue->next_buf_to_fill + 1); 3555 return 1; 3556 } 3557 return 0; 3558} 3559 3560/* 3561 * Switched to packing state if the number of used buffers on a queue 3562 * reaches a certain limit. 3563 */ 3564static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3565{ 3566 if (!queue->do_pack) { 3567 if (atomic_read(&queue->used_buffers) 3568 >= QETH_HIGH_WATERMARK_PACK){ 3569 /* switch non-PACKING -> PACKING */ 3570 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3571 QETH_TXQ_STAT_INC(queue, packing_mode_switch); 3572 queue->do_pack = 1; 3573 } 3574 } 3575} 3576 3577/* 3578 * Switches from packing to non-packing mode. If there is a packing 3579 * buffer on the queue this buffer will be prepared to be flushed. 3580 * In that case 1 is returned to inform the caller. If no buffer 3581 * has to be flushed, zero is returned. 3582 */ 3583static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3584{ 3585 if (queue->do_pack) { 3586 if (atomic_read(&queue->used_buffers) 3587 <= QETH_LOW_WATERMARK_PACK) { 3588 /* switch PACKING -> non-PACKING */ 3589 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3590 QETH_TXQ_STAT_INC(queue, packing_mode_switch); 3591 queue->do_pack = 0; 3592 return qeth_prep_flush_pack_buffer(queue); 3593 } 3594 } 3595 return 0; 3596} 3597 3598static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3599 int count) 3600{ 3601 struct qeth_qdio_out_buffer *buf = queue->bufs[index]; 3602 struct qeth_card *card = queue->card; 3603 unsigned int frames, usecs; 3604 struct qaob *aob = NULL; 3605 int rc; 3606 int i; 3607 3608 for (i = index; i < index + count; ++i) { 3609 unsigned int bidx = QDIO_BUFNR(i); 3610 struct sk_buff *skb; 3611 3612 buf = queue->bufs[bidx]; 3613 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3614 SBAL_EFLAGS_LAST_ENTRY; 3615 queue->coalesced_frames += buf->frames; 3616 3617 if (IS_IQD(card)) { 3618 skb_queue_walk(&buf->skb_list, skb) 3619 skb_tx_timestamp(skb); 3620 } 3621 } 3622 3623 if (IS_IQD(card)) { 3624 if (card->options.cq == QETH_CQ_ENABLED && 3625 !qeth_iqd_is_mcast_queue(card, queue) && 3626 count == 1) { 3627 if (!buf->aob) 3628 buf->aob = kmem_cache_zalloc(qeth_qaob_cache, 3629 GFP_ATOMIC); 3630 if (buf->aob) { 3631 struct qeth_qaob_priv1 *priv; 3632 3633 aob = buf->aob; 3634 priv = (struct qeth_qaob_priv1 *)&aob->user1; 3635 priv->state = QETH_QAOB_ISSUED; 3636 priv->queue_no = queue->queue_no; 3637 } 3638 } 3639 } else { 3640 if (!queue->do_pack) { 3641 if ((atomic_read(&queue->used_buffers) >= 3642 (QETH_HIGH_WATERMARK_PACK - 3643 QETH_WATERMARK_PACK_FUZZ)) && 3644 !atomic_read(&queue->set_pci_flags_count)) { 3645 /* it's likely that we'll go to packing 3646 * mode soon */ 3647 atomic_inc(&queue->set_pci_flags_count); 3648 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3649 } 3650 } else { 3651 if (!atomic_read(&queue->set_pci_flags_count)) { 3652 /* 3653 * there's no outstanding PCI any more, so we 3654 * have to request a PCI to be sure the PCI 3655 * will wake at some time in the future then we 3656 * can flush packed buffers that might still be 3657 * hanging around, which can happen if no 3658 * further send was requested by the stack 3659 */ 3660 atomic_inc(&queue->set_pci_flags_count); 3661 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3662 } 3663 } 3664 } 3665 3666 QETH_TXQ_STAT_INC(queue, doorbell); 3667 rc = qdio_add_bufs_to_output_queue(CARD_DDEV(card), queue->queue_no, 3668 index, count, aob); 3669 3670 switch (rc) { 3671 case 0: 3672 case -ENOBUFS: 3673 /* ignore temporary SIGA errors without busy condition */ 3674 3675 /* Fake the TX completion interrupt: */ 3676 frames = READ_ONCE(queue->max_coalesced_frames); 3677 usecs = READ_ONCE(queue->coalesce_usecs); 3678 3679 if (frames && queue->coalesced_frames >= frames) { 3680 napi_schedule(&queue->napi); 3681 queue->coalesced_frames = 0; 3682 QETH_TXQ_STAT_INC(queue, coal_frames); 3683 } else if (qeth_use_tx_irqs(card) && 3684 atomic_read(&queue->used_buffers) >= 32) { 3685 /* Old behaviour carried over from the qdio layer: */ 3686 napi_schedule(&queue->napi); 3687 QETH_TXQ_STAT_INC(queue, coal_frames); 3688 } else if (usecs) { 3689 qeth_tx_arm_timer(queue, usecs); 3690 } 3691 3692 break; 3693 default: 3694 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3695 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3696 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3697 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3698 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3699 3700 /* this must not happen under normal circumstances. if it 3701 * happens something is really wrong -> recover */ 3702 qeth_schedule_recovery(queue->card); 3703 } 3704} 3705 3706static void qeth_flush_queue(struct qeth_qdio_out_q *queue) 3707{ 3708 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count); 3709 3710 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count); 3711 queue->prev_hdr = NULL; 3712 queue->bulk_count = 0; 3713} 3714 3715static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3716{ 3717 /* 3718 * check if we have to switch to non-packing mode or if 3719 * we have to get a pci flag out on the queue 3720 */ 3721 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3722 !atomic_read(&queue->set_pci_flags_count)) { 3723 unsigned int index, flush_cnt; 3724 3725 spin_lock(&queue->lock); 3726 3727 index = queue->next_buf_to_fill; 3728 3729 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue); 3730 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count)) 3731 flush_cnt = qeth_prep_flush_pack_buffer(queue); 3732 3733 if (flush_cnt) { 3734 qeth_flush_buffers(queue, index, flush_cnt); 3735 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt); 3736 } 3737 3738 spin_unlock(&queue->lock); 3739 } 3740} 3741 3742static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr) 3743{ 3744 struct qeth_card *card = (struct qeth_card *)card_ptr; 3745 3746 napi_schedule_irqoff(&card->napi); 3747} 3748 3749int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3750{ 3751 if (card->options.cq == QETH_CQ_NOTAVAILABLE) 3752 return -1; 3753 3754 card->options.cq = cq; 3755 return 0; 3756} 3757EXPORT_SYMBOL_GPL(qeth_configure_cq); 3758 3759static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob) 3760{ 3761 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1; 3762 unsigned int queue_no = priv->queue_no; 3763 3764 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1)); 3765 3766 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING && 3767 queue_no < card->qdio.no_out_queues) 3768 napi_schedule(&card->qdio.out_qs[queue_no]->napi); 3769} 3770 3771static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err, 3772 unsigned int queue, int first_element, 3773 int count) 3774{ 3775 struct qeth_qdio_q *cq = card->qdio.c_q; 3776 int i; 3777 int rc; 3778 3779 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3780 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3781 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3782 3783 if (qdio_err) { 3784 netif_tx_stop_all_queues(card->dev); 3785 qeth_schedule_recovery(card); 3786 return; 3787 } 3788 3789 for (i = first_element; i < first_element + count; ++i) { 3790 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)]; 3791 int e = 0; 3792 3793 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3794 buffer->element[e].addr) { 3795 dma64_t phys_aob_addr = buffer->element[e].addr; 3796 3797 qeth_qdio_handle_aob(card, dma64_to_virt(phys_aob_addr)); 3798 ++e; 3799 } 3800 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER); 3801 } 3802 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), queue, 3803 cq->next_buf_to_init, count); 3804 if (rc) { 3805 dev_warn(&card->gdev->dev, 3806 "QDIO reported an error, rc=%i\n", rc); 3807 QETH_CARD_TEXT(card, 2, "qcqherr"); 3808 } 3809 3810 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count); 3811} 3812 3813static void qeth_qdio_input_handler(struct ccw_device *ccwdev, 3814 unsigned int qdio_err, int queue, 3815 int first_elem, int count, 3816 unsigned long card_ptr) 3817{ 3818 struct qeth_card *card = (struct qeth_card *)card_ptr; 3819 3820 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3821 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3822 3823 if (qdio_err) 3824 qeth_schedule_recovery(card); 3825} 3826 3827static void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3828 unsigned int qdio_error, int __queue, 3829 int first_element, int count, 3830 unsigned long card_ptr) 3831{ 3832 struct qeth_card *card = (struct qeth_card *) card_ptr; 3833 3834 QETH_CARD_TEXT(card, 2, "achkcond"); 3835 netif_tx_stop_all_queues(card->dev); 3836 qeth_schedule_recovery(card); 3837} 3838 3839/* 3840 * Note: Function assumes that we have 4 outbound queues. 3841 */ 3842static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb) 3843{ 3844 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 3845 u8 tos; 3846 3847 switch (card->qdio.do_prio_queueing) { 3848 case QETH_PRIO_Q_ING_TOS: 3849 case QETH_PRIO_Q_ING_PREC: 3850 switch (vlan_get_protocol(skb)) { 3851 case htons(ETH_P_IP): 3852 tos = ipv4_get_dsfield(ip_hdr(skb)); 3853 break; 3854 case htons(ETH_P_IPV6): 3855 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3856 break; 3857 default: 3858 return card->qdio.default_out_queue; 3859 } 3860 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3861 return ~tos >> 6 & 3; 3862 if (tos & IPTOS_MINCOST) 3863 return 3; 3864 if (tos & IPTOS_RELIABILITY) 3865 return 2; 3866 if (tos & IPTOS_THROUGHPUT) 3867 return 1; 3868 if (tos & IPTOS_LOWDELAY) 3869 return 0; 3870 break; 3871 case QETH_PRIO_Q_ING_SKB: 3872 if (skb->priority > 5) 3873 return 0; 3874 return ~skb->priority >> 1 & 3; 3875 case QETH_PRIO_Q_ING_VLAN: 3876 if (veth->h_vlan_proto == htons(ETH_P_8021Q)) 3877 return ~ntohs(veth->h_vlan_TCI) >> 3878 (VLAN_PRIO_SHIFT + 1) & 3; 3879 break; 3880 case QETH_PRIO_Q_ING_FIXED: 3881 return card->qdio.default_out_queue; 3882 default: 3883 break; 3884 } 3885 return card->qdio.default_out_queue; 3886} 3887 3888/** 3889 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3890 * @skb: SKB address 3891 * 3892 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3893 * fragmented part of the SKB. Returns zero for linear SKB. 3894 */ 3895static int qeth_get_elements_for_frags(struct sk_buff *skb) 3896{ 3897 int cnt, elements = 0; 3898 3899 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3900 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 3901 3902 elements += qeth_get_elements_for_range( 3903 (addr_t)skb_frag_address(frag), 3904 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3905 } 3906 return elements; 3907} 3908 3909/** 3910 * qeth_count_elements() - Counts the number of QDIO buffer elements needed 3911 * to transmit an skb. 3912 * @skb: the skb to operate on. 3913 * @data_offset: skip this part of the skb's linear data 3914 * 3915 * Returns the number of pages, and thus QDIO buffer elements, needed to map the 3916 * skb's data (both its linear part and paged fragments). 3917 */ 3918static unsigned int qeth_count_elements(struct sk_buff *skb, 3919 unsigned int data_offset) 3920{ 3921 unsigned int elements = qeth_get_elements_for_frags(skb); 3922 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3923 addr_t start = (addr_t)skb->data + data_offset; 3924 3925 if (start != end) 3926 elements += qeth_get_elements_for_range(start, end); 3927 return elements; 3928} 3929 3930#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \ 3931 MAX_TCP_HEADER) 3932 3933/** 3934 * qeth_add_hw_header() - add a HW header to an skb. 3935 * @queue: TX queue that the skb will be placed on. 3936 * @skb: skb that the HW header should be added to. 3937 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3938 * it contains a valid pointer to a qeth_hdr. 3939 * @hdr_len: length of the HW header. 3940 * @proto_len: length of protocol headers that need to be in same page as the 3941 * HW header. 3942 * @elements: returns the required number of buffer elements for this skb. 3943 * 3944 * Returns the pushed length. If the header can't be pushed on 3945 * (eg. because it would cross a page boundary), it is allocated from 3946 * the cache instead and 0 is returned. 3947 * The number of needed buffer elements is returned in @elements. 3948 * Error to create the hdr is indicated by returning with < 0. 3949 */ 3950static int qeth_add_hw_header(struct qeth_qdio_out_q *queue, 3951 struct sk_buff *skb, struct qeth_hdr **hdr, 3952 unsigned int hdr_len, unsigned int proto_len, 3953 unsigned int *elements) 3954{ 3955 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0); 3956 const unsigned int contiguous = proto_len ? proto_len : 1; 3957 const unsigned int max_elements = queue->max_elements; 3958 unsigned int __elements; 3959 addr_t start, end; 3960 bool push_ok; 3961 int rc; 3962 3963check_layout: 3964 start = (addr_t)skb->data - hdr_len; 3965 end = (addr_t)skb->data; 3966 3967 if (qeth_get_elements_for_range(start, end + contiguous) == 1) { 3968 /* Push HW header into same page as first protocol header. */ 3969 push_ok = true; 3970 /* ... but TSO always needs a separate element for headers: */ 3971 if (skb_is_gso(skb)) 3972 __elements = 1 + qeth_count_elements(skb, proto_len); 3973 else 3974 __elements = qeth_count_elements(skb, 0); 3975 } else if (!proto_len && PAGE_ALIGNED(skb->data)) { 3976 /* Push HW header into preceding page, flush with skb->data. */ 3977 push_ok = true; 3978 __elements = 1 + qeth_count_elements(skb, 0); 3979 } else { 3980 /* Use header cache, copy protocol headers up. */ 3981 push_ok = false; 3982 __elements = 1 + qeth_count_elements(skb, proto_len); 3983 } 3984 3985 /* Compress skb to fit into one IO buffer: */ 3986 if (__elements > max_elements) { 3987 if (!skb_is_nonlinear(skb)) { 3988 /* Drop it, no easy way of shrinking it further. */ 3989 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n", 3990 max_elements, __elements, skb->len); 3991 return -E2BIG; 3992 } 3993 3994 rc = skb_linearize(skb); 3995 if (rc) { 3996 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail); 3997 return rc; 3998 } 3999 4000 QETH_TXQ_STAT_INC(queue, skbs_linearized); 4001 /* Linearization changed the layout, re-evaluate: */ 4002 goto check_layout; 4003 } 4004 4005 *elements = __elements; 4006 /* Add the header: */ 4007 if (push_ok) { 4008 *hdr = skb_push(skb, hdr_len); 4009 return hdr_len; 4010 } 4011 4012 /* Fall back to cache element with known-good alignment: */ 4013 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE) 4014 return -E2BIG; 4015 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp); 4016 if (!*hdr) 4017 return -ENOMEM; 4018 /* Copy protocol headers behind HW header: */ 4019 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len); 4020 return 0; 4021} 4022 4023static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue, 4024 struct sk_buff *curr_skb, 4025 struct qeth_hdr *curr_hdr) 4026{ 4027 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start]; 4028 struct qeth_hdr *prev_hdr = queue->prev_hdr; 4029 4030 if (!prev_hdr) 4031 return true; 4032 4033 /* All packets must have the same target: */ 4034 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) { 4035 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list); 4036 4037 return ether_addr_equal(eth_hdr(prev_skb)->h_dest, 4038 eth_hdr(curr_skb)->h_dest) && 4039 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2); 4040 } 4041 4042 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) && 4043 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3); 4044} 4045 4046/** 4047 * qeth_fill_buffer() - map skb into an output buffer 4048 * @buf: buffer to transport the skb 4049 * @skb: skb to map into the buffer 4050 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 4051 * from qeth_core_header_cache. 4052 * @offset: when mapping the skb, start at skb->data + offset 4053 * @hd_len: if > 0, build a dedicated header element of this size 4054 */ 4055static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf, 4056 struct sk_buff *skb, struct qeth_hdr *hdr, 4057 unsigned int offset, unsigned int hd_len) 4058{ 4059 struct qdio_buffer *buffer = buf->buffer; 4060 int element = buf->next_element_to_fill; 4061 int length = skb_headlen(skb) - offset; 4062 char *data = skb->data + offset; 4063 unsigned int elem_length, cnt; 4064 bool is_first_elem = true; 4065 4066 __skb_queue_tail(&buf->skb_list, skb); 4067 4068 /* build dedicated element for HW Header */ 4069 if (hd_len) { 4070 is_first_elem = false; 4071 4072 buffer->element[element].addr = virt_to_dma64(hdr); 4073 buffer->element[element].length = hd_len; 4074 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4075 4076 /* HW header is allocated from cache: */ 4077 if ((void *)hdr != skb->data) 4078 __set_bit(element, buf->from_kmem_cache); 4079 /* HW header was pushed and is contiguous with linear part: */ 4080 else if (length > 0 && !PAGE_ALIGNED(data) && 4081 (data == (char *)hdr + hd_len)) 4082 buffer->element[element].eflags |= 4083 SBAL_EFLAGS_CONTIGUOUS; 4084 4085 element++; 4086 } 4087 4088 /* map linear part into buffer element(s) */ 4089 while (length > 0) { 4090 elem_length = min_t(unsigned int, length, 4091 PAGE_SIZE - offset_in_page(data)); 4092 4093 buffer->element[element].addr = virt_to_dma64(data); 4094 buffer->element[element].length = elem_length; 4095 length -= elem_length; 4096 if (is_first_elem) { 4097 is_first_elem = false; 4098 if (length || skb_is_nonlinear(skb)) 4099 /* skb needs additional elements */ 4100 buffer->element[element].eflags = 4101 SBAL_EFLAGS_FIRST_FRAG; 4102 else 4103 buffer->element[element].eflags = 0; 4104 } else { 4105 buffer->element[element].eflags = 4106 SBAL_EFLAGS_MIDDLE_FRAG; 4107 } 4108 4109 data += elem_length; 4110 element++; 4111 } 4112 4113 /* map page frags into buffer element(s) */ 4114 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 4115 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 4116 4117 data = skb_frag_address(frag); 4118 length = skb_frag_size(frag); 4119 while (length > 0) { 4120 elem_length = min_t(unsigned int, length, 4121 PAGE_SIZE - offset_in_page(data)); 4122 4123 buffer->element[element].addr = virt_to_dma64(data); 4124 buffer->element[element].length = elem_length; 4125 buffer->element[element].eflags = 4126 SBAL_EFLAGS_MIDDLE_FRAG; 4127 4128 length -= elem_length; 4129 data += elem_length; 4130 element++; 4131 } 4132 } 4133 4134 if (buffer->element[element - 1].eflags) 4135 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 4136 buf->next_element_to_fill = element; 4137 return element; 4138} 4139 4140static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4141 struct sk_buff *skb, unsigned int elements, 4142 struct qeth_hdr *hdr, unsigned int offset, 4143 unsigned int hd_len) 4144{ 4145 unsigned int bytes = qdisc_pkt_len(skb); 4146 struct qeth_qdio_out_buffer *buffer; 4147 unsigned int next_element; 4148 struct netdev_queue *txq; 4149 bool stopped = false; 4150 bool flush; 4151 4152 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)]; 4153 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); 4154 4155 /* Just a sanity check, the wake/stop logic should ensure that we always 4156 * get a free buffer. 4157 */ 4158 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4159 return -EBUSY; 4160 4161 flush = !qeth_iqd_may_bulk(queue, skb, hdr); 4162 4163 if (flush || 4164 (buffer->next_element_to_fill + elements > queue->max_elements)) { 4165 if (buffer->next_element_to_fill > 0) { 4166 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4167 queue->bulk_count++; 4168 } 4169 4170 if (queue->bulk_count >= queue->bulk_max) 4171 flush = true; 4172 4173 if (flush) 4174 qeth_flush_queue(queue); 4175 4176 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + 4177 queue->bulk_count)]; 4178 4179 /* Sanity-check again: */ 4180 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4181 return -EBUSY; 4182 } 4183 4184 if (buffer->next_element_to_fill == 0 && 4185 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { 4186 /* If a TX completion happens right _here_ and misses to wake 4187 * the txq, then our re-check below will catch the race. 4188 */ 4189 QETH_TXQ_STAT_INC(queue, stopped); 4190 netif_tx_stop_queue(txq); 4191 stopped = true; 4192 } 4193 4194 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len); 4195 buffer->bytes += bytes; 4196 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1; 4197 queue->prev_hdr = hdr; 4198 4199 flush = __netdev_tx_sent_queue(txq, bytes, 4200 !stopped && netdev_xmit_more()); 4201 4202 if (flush || next_element >= queue->max_elements) { 4203 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4204 queue->bulk_count++; 4205 4206 if (queue->bulk_count >= queue->bulk_max) 4207 flush = true; 4208 4209 if (flush) 4210 qeth_flush_queue(queue); 4211 } 4212 4213 if (stopped && !qeth_out_queue_is_full(queue)) 4214 netif_tx_start_queue(txq); 4215 return 0; 4216} 4217 4218static int qeth_do_send_packet(struct qeth_card *card, 4219 struct qeth_qdio_out_q *queue, 4220 struct sk_buff *skb, struct qeth_hdr *hdr, 4221 unsigned int offset, unsigned int hd_len, 4222 unsigned int elements_needed) 4223{ 4224 unsigned int start_index = queue->next_buf_to_fill; 4225 struct qeth_qdio_out_buffer *buffer; 4226 unsigned int next_element; 4227 struct netdev_queue *txq; 4228 bool stopped = false; 4229 int flush_count = 0; 4230 int do_pack = 0; 4231 int rc = 0; 4232 4233 buffer = queue->bufs[queue->next_buf_to_fill]; 4234 4235 /* Just a sanity check, the wake/stop logic should ensure that we always 4236 * get a free buffer. 4237 */ 4238 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4239 return -EBUSY; 4240 4241 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); 4242 4243 /* check if we need to switch packing state of this queue */ 4244 qeth_switch_to_packing_if_needed(queue); 4245 if (queue->do_pack) { 4246 do_pack = 1; 4247 /* does packet fit in current buffer? */ 4248 if (buffer->next_element_to_fill + elements_needed > 4249 queue->max_elements) { 4250 /* ... no -> set state PRIMED */ 4251 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4252 flush_count++; 4253 queue->next_buf_to_fill = 4254 QDIO_BUFNR(queue->next_buf_to_fill + 1); 4255 buffer = queue->bufs[queue->next_buf_to_fill]; 4256 4257 /* We stepped forward, so sanity-check again: */ 4258 if (atomic_read(&buffer->state) != 4259 QETH_QDIO_BUF_EMPTY) { 4260 qeth_flush_buffers(queue, start_index, 4261 flush_count); 4262 rc = -EBUSY; 4263 goto out; 4264 } 4265 } 4266 } 4267 4268 if (buffer->next_element_to_fill == 0 && 4269 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { 4270 /* If a TX completion happens right _here_ and misses to wake 4271 * the txq, then our re-check below will catch the race. 4272 */ 4273 QETH_TXQ_STAT_INC(queue, stopped); 4274 netif_tx_stop_queue(txq); 4275 stopped = true; 4276 } 4277 4278 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len); 4279 buffer->bytes += qdisc_pkt_len(skb); 4280 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1; 4281 4282 if (queue->do_pack) 4283 QETH_TXQ_STAT_INC(queue, skbs_pack); 4284 if (!queue->do_pack || stopped || next_element >= queue->max_elements) { 4285 flush_count++; 4286 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4287 queue->next_buf_to_fill = 4288 QDIO_BUFNR(queue->next_buf_to_fill + 1); 4289 } 4290 4291 if (flush_count) 4292 qeth_flush_buffers(queue, start_index, flush_count); 4293 4294out: 4295 if (do_pack) 4296 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count); 4297 4298 if (stopped && !qeth_out_queue_is_full(queue)) 4299 netif_tx_start_queue(txq); 4300 return rc; 4301} 4302 4303static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr, 4304 unsigned int payload_len, struct sk_buff *skb, 4305 unsigned int proto_len) 4306{ 4307 struct qeth_hdr_ext_tso *ext = &hdr->ext; 4308 4309 ext->hdr_tot_len = sizeof(*ext); 4310 ext->imb_hdr_no = 1; 4311 ext->hdr_type = 1; 4312 ext->hdr_version = 1; 4313 ext->hdr_len = 28; 4314 ext->payload_len = payload_len; 4315 ext->mss = skb_shinfo(skb)->gso_size; 4316 ext->dg_hdr_len = proto_len; 4317} 4318 4319int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 4320 struct qeth_qdio_out_q *queue, __be16 proto, 4321 void (*fill_header)(struct qeth_qdio_out_q *queue, 4322 struct qeth_hdr *hdr, struct sk_buff *skb, 4323 __be16 proto, unsigned int data_len)) 4324{ 4325 unsigned int proto_len, hw_hdr_len; 4326 unsigned int frame_len = skb->len; 4327 bool is_tso = skb_is_gso(skb); 4328 unsigned int data_offset = 0; 4329 struct qeth_hdr *hdr = NULL; 4330 unsigned int hd_len = 0; 4331 unsigned int elements; 4332 int push_len, rc; 4333 4334 if (is_tso) { 4335 hw_hdr_len = sizeof(struct qeth_hdr_tso); 4336 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 4337 } else { 4338 hw_hdr_len = sizeof(struct qeth_hdr); 4339 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0; 4340 } 4341 4342 rc = skb_cow_head(skb, hw_hdr_len); 4343 if (rc) 4344 return rc; 4345 4346 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len, 4347 &elements); 4348 if (push_len < 0) 4349 return push_len; 4350 if (is_tso || !push_len) { 4351 /* HW header needs its own buffer element. */ 4352 hd_len = hw_hdr_len + proto_len; 4353 data_offset = push_len + proto_len; 4354 } 4355 memset(hdr, 0, hw_hdr_len); 4356 fill_header(queue, hdr, skb, proto, frame_len); 4357 if (is_tso) 4358 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr, 4359 frame_len - proto_len, skb, proto_len); 4360 4361 if (IS_IQD(card)) { 4362 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset, 4363 hd_len); 4364 } else { 4365 /* TODO: drop skb_orphan() once TX completion is fast enough */ 4366 skb_orphan(skb); 4367 spin_lock(&queue->lock); 4368 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset, 4369 hd_len, elements); 4370 spin_unlock(&queue->lock); 4371 } 4372 4373 if (rc && !push_len) 4374 kmem_cache_free(qeth_core_header_cache, hdr); 4375 4376 return rc; 4377} 4378EXPORT_SYMBOL_GPL(qeth_xmit); 4379 4380static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4381 struct qeth_reply *reply, unsigned long data) 4382{ 4383 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4384 struct qeth_ipacmd_setadpparms *setparms; 4385 4386 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4387 4388 setparms = &(cmd->data.setadapterparms); 4389 if (qeth_setadpparms_inspect_rc(cmd)) { 4390 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4391 setparms->data.mode = SET_PROMISC_MODE_OFF; 4392 } 4393 card->info.promisc_mode = setparms->data.mode; 4394 return (cmd->hdr.return_code) ? -EIO : 0; 4395} 4396 4397void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable) 4398{ 4399 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON : 4400 SET_PROMISC_MODE_OFF; 4401 struct qeth_cmd_buffer *iob; 4402 struct qeth_ipa_cmd *cmd; 4403 4404 QETH_CARD_TEXT(card, 4, "setprom"); 4405 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4406 4407 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4408 SETADP_DATA_SIZEOF(mode)); 4409 if (!iob) 4410 return; 4411 cmd = __ipa_cmd(iob); 4412 cmd->data.setadapterparms.data.mode = mode; 4413 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4414} 4415EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4416 4417static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4418 struct qeth_reply *reply, unsigned long data) 4419{ 4420 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4421 struct qeth_ipacmd_setadpparms *adp_cmd; 4422 4423 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4424 if (qeth_setadpparms_inspect_rc(cmd)) 4425 return -EIO; 4426 4427 adp_cmd = &cmd->data.setadapterparms; 4428 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr)) 4429 return -EADDRNOTAVAIL; 4430 4431 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) && 4432 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC)) 4433 return -EADDRNOTAVAIL; 4434 4435 eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr); 4436 return 0; 4437} 4438 4439int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4440{ 4441 int rc; 4442 struct qeth_cmd_buffer *iob; 4443 struct qeth_ipa_cmd *cmd; 4444 4445 QETH_CARD_TEXT(card, 4, "chgmac"); 4446 4447 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4448 SETADP_DATA_SIZEOF(change_addr)); 4449 if (!iob) 4450 return -ENOMEM; 4451 cmd = __ipa_cmd(iob); 4452 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4453 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4454 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4455 card->dev->dev_addr); 4456 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4457 NULL); 4458 return rc; 4459} 4460EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4461 4462static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4463 struct qeth_reply *reply, unsigned long data) 4464{ 4465 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4466 struct qeth_set_access_ctrl *access_ctrl_req; 4467 4468 QETH_CARD_TEXT(card, 4, "setaccb"); 4469 4470 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4471 QETH_CARD_TEXT_(card, 2, "rc=%d", 4472 cmd->data.setadapterparms.hdr.return_code); 4473 if (cmd->data.setadapterparms.hdr.return_code != 4474 SET_ACCESS_CTRL_RC_SUCCESS) 4475 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n", 4476 access_ctrl_req->subcmd_code, CARD_DEVID(card), 4477 cmd->data.setadapterparms.hdr.return_code); 4478 switch (qeth_setadpparms_inspect_rc(cmd)) { 4479 case SET_ACCESS_CTRL_RC_SUCCESS: 4480 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE) 4481 dev_info(&card->gdev->dev, 4482 "QDIO data connection isolation is deactivated\n"); 4483 else 4484 dev_info(&card->gdev->dev, 4485 "QDIO data connection isolation is activated\n"); 4486 return 0; 4487 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4488 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n", 4489 CARD_DEVID(card)); 4490 return 0; 4491 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4492 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n", 4493 CARD_DEVID(card)); 4494 return 0; 4495 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4496 dev_err(&card->gdev->dev, "Adapter does not " 4497 "support QDIO data connection isolation\n"); 4498 return -EOPNOTSUPP; 4499 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4500 dev_err(&card->gdev->dev, 4501 "Adapter is dedicated. " 4502 "QDIO data connection isolation not supported\n"); 4503 return -EOPNOTSUPP; 4504 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4505 dev_err(&card->gdev->dev, 4506 "TSO does not permit QDIO data connection isolation\n"); 4507 return -EPERM; 4508 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4509 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4510 "support reflective relay mode\n"); 4511 return -EOPNOTSUPP; 4512 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4513 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4514 "enabled at the adjacent switch port"); 4515 return -EREMOTEIO; 4516 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4517 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4518 "at the adjacent switch failed\n"); 4519 /* benign error while disabling ISOLATION_MODE_FWD */ 4520 return 0; 4521 default: 4522 return -EIO; 4523 } 4524} 4525 4526int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4527 enum qeth_ipa_isolation_modes mode) 4528{ 4529 int rc; 4530 struct qeth_cmd_buffer *iob; 4531 struct qeth_ipa_cmd *cmd; 4532 struct qeth_set_access_ctrl *access_ctrl_req; 4533 4534 QETH_CARD_TEXT(card, 4, "setacctl"); 4535 4536 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4537 dev_err(&card->gdev->dev, 4538 "Adapter does not support QDIO data connection isolation\n"); 4539 return -EOPNOTSUPP; 4540 } 4541 4542 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4543 SETADP_DATA_SIZEOF(set_access_ctrl)); 4544 if (!iob) 4545 return -ENOMEM; 4546 cmd = __ipa_cmd(iob); 4547 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4548 access_ctrl_req->subcmd_code = mode; 4549 4550 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4551 NULL); 4552 if (rc) { 4553 QETH_CARD_TEXT_(card, 2, "rc=%d", rc); 4554 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n", 4555 rc, CARD_DEVID(card)); 4556 } 4557 4558 return rc; 4559} 4560 4561void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue) 4562{ 4563 struct qeth_card *card; 4564 4565 card = dev->ml_priv; 4566 QETH_CARD_TEXT(card, 4, "txtimeo"); 4567 qeth_schedule_recovery(card); 4568} 4569EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4570 4571static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4572{ 4573 struct qeth_card *card = dev->ml_priv; 4574 int rc = 0; 4575 4576 switch (regnum) { 4577 case MII_BMCR: /* Basic mode control register */ 4578 rc = BMCR_FULLDPLX; 4579 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4580 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) && 4581 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH)) 4582 rc |= BMCR_SPEED100; 4583 break; 4584 case MII_BMSR: /* Basic mode status register */ 4585 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4586 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4587 BMSR_100BASE4; 4588 break; 4589 case MII_PHYSID1: /* PHYS ID 1 */ 4590 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4591 dev->dev_addr[2]; 4592 rc = (rc >> 5) & 0xFFFF; 4593 break; 4594 case MII_PHYSID2: /* PHYS ID 2 */ 4595 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4596 break; 4597 case MII_ADVERTISE: /* Advertisement control reg */ 4598 rc = ADVERTISE_ALL; 4599 break; 4600 case MII_LPA: /* Link partner ability reg */ 4601 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4602 LPA_100BASE4 | LPA_LPACK; 4603 break; 4604 case MII_EXPANSION: /* Expansion register */ 4605 break; 4606 case MII_DCOUNTER: /* disconnect counter */ 4607 break; 4608 case MII_FCSCOUNTER: /* false carrier counter */ 4609 break; 4610 case MII_NWAYTEST: /* N-way auto-neg test register */ 4611 break; 4612 case MII_RERRCOUNTER: /* rx error counter */ 4613 rc = card->stats.rx_length_errors + 4614 card->stats.rx_frame_errors + 4615 card->stats.rx_fifo_errors; 4616 break; 4617 case MII_SREVISION: /* silicon revision */ 4618 break; 4619 case MII_RESV1: /* reserved 1 */ 4620 break; 4621 case MII_LBRERROR: /* loopback, rx, bypass error */ 4622 break; 4623 case MII_PHYADDR: /* physical address */ 4624 break; 4625 case MII_RESV2: /* reserved 2 */ 4626 break; 4627 case MII_TPISTATUS: /* TPI status for 10mbps */ 4628 break; 4629 case MII_NCONFIG: /* network interface config */ 4630 break; 4631 default: 4632 break; 4633 } 4634 return rc; 4635} 4636 4637static int qeth_snmp_command_cb(struct qeth_card *card, 4638 struct qeth_reply *reply, unsigned long data) 4639{ 4640 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 4641 struct qeth_arp_query_info *qinfo = reply->param; 4642 struct qeth_ipacmd_setadpparms *adp_cmd; 4643 unsigned int data_len; 4644 void *snmp_data; 4645 4646 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4647 4648 if (cmd->hdr.return_code) { 4649 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4650 return -EIO; 4651 } 4652 if (cmd->data.setadapterparms.hdr.return_code) { 4653 cmd->hdr.return_code = 4654 cmd->data.setadapterparms.hdr.return_code; 4655 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4656 return -EIO; 4657 } 4658 4659 adp_cmd = &cmd->data.setadapterparms; 4660 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr); 4661 if (adp_cmd->hdr.seq_no == 1) { 4662 snmp_data = &adp_cmd->data.snmp; 4663 } else { 4664 snmp_data = &adp_cmd->data.snmp.request; 4665 data_len -= offsetof(struct qeth_snmp_cmd, request); 4666 } 4667 4668 /* check if there is enough room in userspace */ 4669 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4670 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC); 4671 return -ENOSPC; 4672 } 4673 QETH_CARD_TEXT_(card, 4, "snore%i", 4674 cmd->data.setadapterparms.hdr.used_total); 4675 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4676 cmd->data.setadapterparms.hdr.seq_no); 4677 /*copy entries to user buffer*/ 4678 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len); 4679 qinfo->udata_offset += data_len; 4680 4681 if (cmd->data.setadapterparms.hdr.seq_no < 4682 cmd->data.setadapterparms.hdr.used_total) 4683 return 1; 4684 return 0; 4685} 4686 4687static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4688{ 4689 struct qeth_snmp_ureq __user *ureq; 4690 struct qeth_cmd_buffer *iob; 4691 unsigned int req_len; 4692 struct qeth_arp_query_info qinfo = {0, }; 4693 int rc = 0; 4694 4695 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4696 4697 if (IS_VM_NIC(card)) 4698 return -EOPNOTSUPP; 4699 4700 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4701 IS_LAYER3(card)) 4702 return -EOPNOTSUPP; 4703 4704 ureq = (struct qeth_snmp_ureq __user *) udata; 4705 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) || 4706 get_user(req_len, &ureq->hdr.req_len)) 4707 return -EFAULT; 4708 4709 /* Sanitize user input, to avoid overflows in iob size calculation: */ 4710 if (req_len > QETH_BUFSIZE) 4711 return -EINVAL; 4712 4713 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len); 4714 if (!iob) 4715 return -ENOMEM; 4716 4717 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp, 4718 &ureq->cmd, req_len)) { 4719 qeth_put_cmd(iob); 4720 return -EFAULT; 4721 } 4722 4723 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4724 if (!qinfo.udata) { 4725 qeth_put_cmd(iob); 4726 return -ENOMEM; 4727 } 4728 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4729 4730 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo); 4731 if (rc) 4732 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n", 4733 CARD_DEVID(card), rc); 4734 else { 4735 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4736 rc = -EFAULT; 4737 } 4738 4739 kfree(qinfo.udata); 4740 return rc; 4741} 4742 4743static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4744 struct qeth_reply *reply, 4745 unsigned long data) 4746{ 4747 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4748 struct qeth_qoat_priv *priv = reply->param; 4749 int resdatalen; 4750 4751 QETH_CARD_TEXT(card, 3, "qoatcb"); 4752 if (qeth_setadpparms_inspect_rc(cmd)) 4753 return -EIO; 4754 4755 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4756 4757 if (resdatalen > (priv->buffer_len - priv->response_len)) 4758 return -ENOSPC; 4759 4760 memcpy(priv->buffer + priv->response_len, 4761 &cmd->data.setadapterparms.hdr, resdatalen); 4762 priv->response_len += resdatalen; 4763 4764 if (cmd->data.setadapterparms.hdr.seq_no < 4765 cmd->data.setadapterparms.hdr.used_total) 4766 return 1; 4767 return 0; 4768} 4769 4770static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4771{ 4772 int rc = 0; 4773 struct qeth_cmd_buffer *iob; 4774 struct qeth_ipa_cmd *cmd; 4775 struct qeth_query_oat *oat_req; 4776 struct qeth_query_oat_data oat_data; 4777 struct qeth_qoat_priv priv; 4778 void __user *tmp; 4779 4780 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4781 4782 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) 4783 return -EOPNOTSUPP; 4784 4785 if (copy_from_user(&oat_data, udata, sizeof(oat_data))) 4786 return -EFAULT; 4787 4788 priv.buffer_len = oat_data.buffer_len; 4789 priv.response_len = 0; 4790 priv.buffer = vzalloc(oat_data.buffer_len); 4791 if (!priv.buffer) 4792 return -ENOMEM; 4793 4794 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4795 SETADP_DATA_SIZEOF(query_oat)); 4796 if (!iob) { 4797 rc = -ENOMEM; 4798 goto out_free; 4799 } 4800 cmd = __ipa_cmd(iob); 4801 oat_req = &cmd->data.setadapterparms.data.query_oat; 4802 oat_req->subcmd_code = oat_data.command; 4803 4804 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv); 4805 if (!rc) { 4806 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) : 4807 u64_to_user_ptr(oat_data.ptr); 4808 oat_data.response_len = priv.response_len; 4809 4810 if (copy_to_user(tmp, priv.buffer, priv.response_len) || 4811 copy_to_user(udata, &oat_data, sizeof(oat_data))) 4812 rc = -EFAULT; 4813 } 4814 4815out_free: 4816 vfree(priv.buffer); 4817 return rc; 4818} 4819 4820static int qeth_init_link_info_oat_cb(struct qeth_card *card, 4821 struct qeth_reply *reply_priv, 4822 unsigned long data) 4823{ 4824 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 4825 struct qeth_link_info *link_info = reply_priv->param; 4826 struct qeth_query_oat_physical_if *phys_if; 4827 struct qeth_query_oat_reply *reply; 4828 4829 QETH_CARD_TEXT(card, 2, "qoatincb"); 4830 if (qeth_setadpparms_inspect_rc(cmd)) 4831 return -EIO; 4832 4833 /* Multi-part reply is unexpected, don't bother: */ 4834 if (cmd->data.setadapterparms.hdr.used_total > 1) 4835 return -EINVAL; 4836 4837 /* Expect the reply to start with phys_if data: */ 4838 reply = &cmd->data.setadapterparms.data.query_oat.reply[0]; 4839 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF || 4840 reply->length < sizeof(*reply)) 4841 return -EINVAL; 4842 4843 phys_if = &reply->phys_if; 4844 4845 switch (phys_if->speed_duplex) { 4846 case QETH_QOAT_PHYS_SPEED_10M_HALF: 4847 link_info->speed = SPEED_10; 4848 link_info->duplex = DUPLEX_HALF; 4849 break; 4850 case QETH_QOAT_PHYS_SPEED_10M_FULL: 4851 link_info->speed = SPEED_10; 4852 link_info->duplex = DUPLEX_FULL; 4853 break; 4854 case QETH_QOAT_PHYS_SPEED_100M_HALF: 4855 link_info->speed = SPEED_100; 4856 link_info->duplex = DUPLEX_HALF; 4857 break; 4858 case QETH_QOAT_PHYS_SPEED_100M_FULL: 4859 link_info->speed = SPEED_100; 4860 link_info->duplex = DUPLEX_FULL; 4861 break; 4862 case QETH_QOAT_PHYS_SPEED_1000M_HALF: 4863 link_info->speed = SPEED_1000; 4864 link_info->duplex = DUPLEX_HALF; 4865 break; 4866 case QETH_QOAT_PHYS_SPEED_1000M_FULL: 4867 link_info->speed = SPEED_1000; 4868 link_info->duplex = DUPLEX_FULL; 4869 break; 4870 case QETH_QOAT_PHYS_SPEED_10G_FULL: 4871 link_info->speed = SPEED_10000; 4872 link_info->duplex = DUPLEX_FULL; 4873 break; 4874 case QETH_QOAT_PHYS_SPEED_25G_FULL: 4875 link_info->speed = SPEED_25000; 4876 link_info->duplex = DUPLEX_FULL; 4877 break; 4878 case QETH_QOAT_PHYS_SPEED_UNKNOWN: 4879 default: 4880 link_info->speed = SPEED_UNKNOWN; 4881 link_info->duplex = DUPLEX_UNKNOWN; 4882 break; 4883 } 4884 4885 switch (phys_if->media_type) { 4886 case QETH_QOAT_PHYS_MEDIA_COPPER: 4887 link_info->port = PORT_TP; 4888 link_info->link_mode = QETH_LINK_MODE_UNKNOWN; 4889 break; 4890 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT: 4891 link_info->port = PORT_FIBRE; 4892 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT; 4893 break; 4894 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG: 4895 link_info->port = PORT_FIBRE; 4896 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG; 4897 break; 4898 default: 4899 link_info->port = PORT_OTHER; 4900 link_info->link_mode = QETH_LINK_MODE_UNKNOWN; 4901 break; 4902 } 4903 4904 return 0; 4905} 4906 4907static void qeth_init_link_info(struct qeth_card *card) 4908{ 4909 qeth_default_link_info(card); 4910 4911 /* Get more accurate data via QUERY OAT: */ 4912 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4913 struct qeth_link_info link_info; 4914 struct qeth_cmd_buffer *iob; 4915 4916 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4917 SETADP_DATA_SIZEOF(query_oat)); 4918 if (iob) { 4919 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob); 4920 struct qeth_query_oat *oat_req; 4921 4922 oat_req = &cmd->data.setadapterparms.data.query_oat; 4923 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE; 4924 4925 if (!qeth_send_ipa_cmd(card, iob, 4926 qeth_init_link_info_oat_cb, 4927 &link_info)) { 4928 if (link_info.speed != SPEED_UNKNOWN) 4929 card->info.link_info.speed = link_info.speed; 4930 if (link_info.duplex != DUPLEX_UNKNOWN) 4931 card->info.link_info.duplex = link_info.duplex; 4932 if (link_info.port != PORT_OTHER) 4933 card->info.link_info.port = link_info.port; 4934 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN) 4935 card->info.link_info.link_mode = link_info.link_mode; 4936 } 4937 } 4938 } 4939} 4940 4941/** 4942 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4943 * @card: pointer to a qeth_card 4944 * 4945 * Returns 4946 * 0, if a MAC address has been set for the card's netdevice 4947 * a return code, for various error conditions 4948 */ 4949int qeth_vm_request_mac(struct qeth_card *card) 4950{ 4951 struct diag26c_mac_resp *response; 4952 struct diag26c_mac_req *request; 4953 int rc; 4954 4955 QETH_CARD_TEXT(card, 2, "vmreqmac"); 4956 4957 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4958 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4959 if (!request || !response) { 4960 rc = -ENOMEM; 4961 goto out; 4962 } 4963 4964 request->resp_buf_len = sizeof(*response); 4965 request->resp_version = DIAG26C_VERSION2; 4966 request->op_code = DIAG26C_GET_MAC; 4967 request->devno = card->info.ddev_devno; 4968 4969 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4970 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4971 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4972 if (rc) 4973 goto out; 4974 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4975 4976 if (request->resp_buf_len < sizeof(*response) || 4977 response->version != request->resp_version) { 4978 rc = -EIO; 4979 QETH_CARD_TEXT(card, 2, "badresp"); 4980 QETH_CARD_HEX(card, 2, &request->resp_buf_len, 4981 sizeof(request->resp_buf_len)); 4982 } else if (!is_valid_ether_addr(response->mac)) { 4983 rc = -EINVAL; 4984 QETH_CARD_TEXT(card, 2, "badmac"); 4985 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN); 4986 } else { 4987 eth_hw_addr_set(card->dev, response->mac); 4988 } 4989 4990out: 4991 kfree(response); 4992 kfree(request); 4993 return rc; 4994} 4995EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4996 4997static void qeth_determine_capabilities(struct qeth_card *card) 4998{ 4999 struct qeth_channel *channel = &card->data; 5000 struct ccw_device *ddev = channel->ccwdev; 5001 int rc; 5002 int ddev_offline = 0; 5003 5004 QETH_CARD_TEXT(card, 2, "detcapab"); 5005 if (!ddev->online) { 5006 ddev_offline = 1; 5007 rc = qeth_start_channel(channel); 5008 if (rc) { 5009 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 5010 goto out; 5011 } 5012 } 5013 5014 rc = qeth_read_conf_data(card); 5015 if (rc) { 5016 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n", 5017 CARD_DEVID(card), rc); 5018 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 5019 goto out_offline; 5020 } 5021 5022 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 5023 if (rc) 5024 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 5025 5026 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt); 5027 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1); 5028 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2); 5029 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3); 5030 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt); 5031 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 5032 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 5033 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 5034 dev_info(&card->gdev->dev, 5035 "Completion Queueing supported\n"); 5036 } else { 5037 card->options.cq = QETH_CQ_NOTAVAILABLE; 5038 } 5039 5040out_offline: 5041 if (ddev_offline == 1) 5042 qeth_stop_channel(channel); 5043out: 5044 return; 5045} 5046 5047static void qeth_read_ccw_conf_data(struct qeth_card *card) 5048{ 5049 struct qeth_card_info *info = &card->info; 5050 struct ccw_device *cdev = CARD_DDEV(card); 5051 struct ccw_dev_id dev_id; 5052 5053 QETH_CARD_TEXT(card, 2, "ccwconfd"); 5054 ccw_device_get_id(cdev, &dev_id); 5055 5056 info->ddev_devno = dev_id.devno; 5057 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) && 5058 !ccw_device_get_iid(cdev, &info->iid) && 5059 !ccw_device_get_chid(cdev, 0, &info->chid); 5060 info->ssid = dev_id.ssid; 5061 5062 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n", 5063 info->chid, info->chpid); 5064 5065 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno); 5066 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid); 5067 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid); 5068 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid); 5069 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid); 5070 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid); 5071 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid); 5072} 5073 5074static int qeth_qdio_establish(struct qeth_card *card) 5075{ 5076 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES]; 5077 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES]; 5078 struct qeth_qib_parms *qib_parms = NULL; 5079 struct qdio_initialize init_data; 5080 unsigned int no_input_qs = 1; 5081 unsigned int i; 5082 int rc = 0; 5083 5084 QETH_CARD_TEXT(card, 2, "qdioest"); 5085 5086 if (!IS_IQD(card) && !IS_VM_NIC(card)) { 5087 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL); 5088 if (!qib_parms) 5089 return -ENOMEM; 5090 5091 qeth_fill_qib_parms(card, qib_parms); 5092 } 5093 5094 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs; 5095 if (card->options.cq == QETH_CQ_ENABLED) { 5096 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs; 5097 no_input_qs++; 5098 } 5099 5100 for (i = 0; i < card->qdio.no_out_queues; i++) 5101 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs; 5102 5103 memset(&init_data, 0, sizeof(struct qdio_initialize)); 5104 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT : 5105 QDIO_QETH_QFMT; 5106 init_data.qib_param_field_format = 0; 5107 init_data.qib_param_field = (void *)qib_parms; 5108 init_data.no_input_qs = no_input_qs; 5109 init_data.no_output_qs = card->qdio.no_out_queues; 5110 init_data.input_handler = qeth_qdio_input_handler; 5111 init_data.output_handler = qeth_qdio_output_handler; 5112 init_data.irq_poll = qeth_qdio_poll; 5113 init_data.int_parm = (unsigned long) card; 5114 init_data.input_sbal_addr_array = in_sbal_ptrs; 5115 init_data.output_sbal_addr_array = out_sbal_ptrs; 5116 5117 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 5118 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 5119 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs, 5120 init_data.no_output_qs); 5121 if (rc) { 5122 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5123 goto out; 5124 } 5125 rc = qdio_establish(CARD_DDEV(card), &init_data); 5126 if (rc) { 5127 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5128 qdio_free(CARD_DDEV(card)); 5129 } 5130 } 5131 5132 switch (card->options.cq) { 5133 case QETH_CQ_ENABLED: 5134 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5135 break; 5136 case QETH_CQ_DISABLED: 5137 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5138 break; 5139 default: 5140 break; 5141 } 5142 5143out: 5144 kfree(qib_parms); 5145 return rc; 5146} 5147 5148static void qeth_core_free_card(struct qeth_card *card) 5149{ 5150 QETH_CARD_TEXT(card, 2, "freecrd"); 5151 5152 unregister_service_level(&card->qeth_service_level); 5153 debugfs_remove_recursive(card->debugfs); 5154 qeth_put_cmd(card->read_cmd); 5155 destroy_workqueue(card->event_wq); 5156 dev_set_drvdata(&card->gdev->dev, NULL); 5157 kfree(card); 5158} 5159 5160static void qeth_trace_features(struct qeth_card *card) 5161{ 5162 QETH_CARD_TEXT(card, 2, "features"); 5163 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5164 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5165 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5166 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5167 sizeof(card->info.diagass_support)); 5168} 5169 5170static struct ccw_device_id qeth_ids[] = { 5171 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5172 .driver_info = QETH_CARD_TYPE_OSD}, 5173 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5174 .driver_info = QETH_CARD_TYPE_IQD}, 5175 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5176 .driver_info = QETH_CARD_TYPE_OSM}, 5177#ifdef CONFIG_QETH_OSX 5178 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5179 .driver_info = QETH_CARD_TYPE_OSX}, 5180#endif 5181 {}, 5182}; 5183MODULE_DEVICE_TABLE(ccw, qeth_ids); 5184 5185static struct ccw_driver qeth_ccw_driver = { 5186 .driver = { 5187 .owner = THIS_MODULE, 5188 .name = "qeth", 5189 }, 5190 .ids = qeth_ids, 5191 .probe = ccwgroup_probe_ccwdev, 5192 .remove = ccwgroup_remove_ccwdev, 5193}; 5194 5195static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok) 5196{ 5197 int retries = 3; 5198 int rc; 5199 5200 QETH_CARD_TEXT(card, 2, "hrdsetup"); 5201 atomic_set(&card->force_alloc_skb, 0); 5202 rc = qeth_update_from_chp_desc(card); 5203 if (rc) 5204 return rc; 5205retry: 5206 if (retries < 3) 5207 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n", 5208 CARD_DEVID(card)); 5209 rc = qeth_qdio_clear_card(card, !IS_IQD(card)); 5210 qeth_stop_channel(&card->data); 5211 qeth_stop_channel(&card->write); 5212 qeth_stop_channel(&card->read); 5213 qdio_free(CARD_DDEV(card)); 5214 5215 rc = qeth_start_channel(&card->read); 5216 if (rc) 5217 goto retriable; 5218 rc = qeth_start_channel(&card->write); 5219 if (rc) 5220 goto retriable; 5221 rc = qeth_start_channel(&card->data); 5222 if (rc) 5223 goto retriable; 5224retriable: 5225 if (rc == -ERESTARTSYS) { 5226 QETH_CARD_TEXT(card, 2, "break1"); 5227 return rc; 5228 } else if (rc) { 5229 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 5230 if (--retries < 0) 5231 goto out; 5232 else 5233 goto retry; 5234 } 5235 5236 qeth_determine_capabilities(card); 5237 qeth_read_ccw_conf_data(card); 5238 qeth_idx_init(card); 5239 5240 rc = qeth_idx_activate_read_channel(card); 5241 if (rc == -EINTR) { 5242 QETH_CARD_TEXT(card, 2, "break2"); 5243 return rc; 5244 } else if (rc) { 5245 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 5246 if (--retries < 0) 5247 goto out; 5248 else 5249 goto retry; 5250 } 5251 5252 rc = qeth_idx_activate_write_channel(card); 5253 if (rc == -EINTR) { 5254 QETH_CARD_TEXT(card, 2, "break3"); 5255 return rc; 5256 } else if (rc) { 5257 QETH_CARD_TEXT_(card, 2, "4err%d", rc); 5258 if (--retries < 0) 5259 goto out; 5260 else 5261 goto retry; 5262 } 5263 card->read_or_write_problem = 0; 5264 rc = qeth_mpc_initialize(card); 5265 if (rc) { 5266 QETH_CARD_TEXT_(card, 2, "5err%d", rc); 5267 goto out; 5268 } 5269 5270 rc = qeth_send_startlan(card); 5271 if (rc) { 5272 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 5273 if (rc == -ENETDOWN) { 5274 dev_warn(&card->gdev->dev, "The LAN is offline\n"); 5275 *carrier_ok = false; 5276 } else { 5277 goto out; 5278 } 5279 } else { 5280 *carrier_ok = true; 5281 } 5282 5283 card->options.ipa4.supported = 0; 5284 card->options.ipa6.supported = 0; 5285 card->options.adp.supported = 0; 5286 card->options.sbp.supported_funcs = 0; 5287 card->info.diagass_support = 0; 5288 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5289 if (rc == -ENOMEM) 5290 goto out; 5291 if (qeth_is_supported(card, IPA_IPV6)) { 5292 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 5293 if (rc == -ENOMEM) 5294 goto out; 5295 } 5296 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5297 rc = qeth_query_setadapterparms(card); 5298 if (rc < 0) { 5299 QETH_CARD_TEXT_(card, 2, "7err%d", rc); 5300 goto out; 5301 } 5302 } 5303 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5304 rc = qeth_query_setdiagass(card); 5305 if (rc) 5306 QETH_CARD_TEXT_(card, 2, "8err%d", rc); 5307 } 5308 5309 qeth_trace_features(card); 5310 5311 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) || 5312 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))) 5313 card->info.hwtrap = 0; 5314 5315 if (card->options.isolation != ISOLATION_MODE_NONE) { 5316 rc = qeth_setadpparms_set_access_ctrl(card, 5317 card->options.isolation); 5318 if (rc) 5319 goto out; 5320 } 5321 5322 qeth_init_link_info(card); 5323 5324 rc = qeth_init_qdio_queues(card); 5325 if (rc) { 5326 QETH_CARD_TEXT_(card, 2, "9err%d", rc); 5327 goto out; 5328 } 5329 5330 return 0; 5331out: 5332 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5333 "an error on the device\n"); 5334 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n", 5335 CARD_DEVID(card), rc); 5336 return rc; 5337} 5338 5339static int qeth_set_online(struct qeth_card *card, 5340 const struct qeth_discipline *disc) 5341{ 5342 bool carrier_ok; 5343 int rc; 5344 5345 mutex_lock(&card->conf_mutex); 5346 QETH_CARD_TEXT(card, 2, "setonlin"); 5347 5348 rc = qeth_hardsetup_card(card, &carrier_ok); 5349 if (rc) { 5350 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 5351 rc = -ENODEV; 5352 goto err_hardsetup; 5353 } 5354 5355 qeth_print_status_message(card); 5356 5357 if (card->dev->reg_state != NETREG_REGISTERED) 5358 /* no need for locking / error handling at this early stage: */ 5359 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card)); 5360 5361 rc = disc->set_online(card, carrier_ok); 5362 if (rc) 5363 goto err_online; 5364 5365 /* let user_space know that device is online */ 5366 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE); 5367 5368 mutex_unlock(&card->conf_mutex); 5369 return 0; 5370 5371err_online: 5372err_hardsetup: 5373 qeth_qdio_clear_card(card, 0); 5374 qeth_clear_working_pool_list(card); 5375 qeth_flush_local_addrs(card); 5376 5377 qeth_stop_channel(&card->data); 5378 qeth_stop_channel(&card->write); 5379 qeth_stop_channel(&card->read); 5380 qdio_free(CARD_DDEV(card)); 5381 5382 mutex_unlock(&card->conf_mutex); 5383 return rc; 5384} 5385 5386int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc, 5387 bool resetting) 5388{ 5389 int rc, rc2, rc3; 5390 5391 mutex_lock(&card->conf_mutex); 5392 QETH_CARD_TEXT(card, 3, "setoffl"); 5393 5394 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) { 5395 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5396 card->info.hwtrap = 1; 5397 } 5398 5399 /* cancel any stalled cmd that might block the rtnl: */ 5400 qeth_clear_ipacmd_list(card); 5401 5402 rtnl_lock(); 5403 netif_device_detach(card->dev); 5404 netif_carrier_off(card->dev); 5405 rtnl_unlock(); 5406 5407 cancel_work_sync(&card->rx_mode_work); 5408 5409 disc->set_offline(card); 5410 5411 qeth_qdio_clear_card(card, 0); 5412 qeth_drain_output_queues(card); 5413 qeth_clear_working_pool_list(card); 5414 qeth_flush_local_addrs(card); 5415 card->info.promisc_mode = 0; 5416 qeth_default_link_info(card); 5417 5418 rc = qeth_stop_channel(&card->data); 5419 rc2 = qeth_stop_channel(&card->write); 5420 rc3 = qeth_stop_channel(&card->read); 5421 if (!rc) 5422 rc = (rc2) ? rc2 : rc3; 5423 if (rc) 5424 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 5425 qdio_free(CARD_DDEV(card)); 5426 5427 /* let user_space know that device is offline */ 5428 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE); 5429 5430 mutex_unlock(&card->conf_mutex); 5431 return 0; 5432} 5433EXPORT_SYMBOL_GPL(qeth_set_offline); 5434 5435static int qeth_do_reset(void *data) 5436{ 5437 const struct qeth_discipline *disc; 5438 struct qeth_card *card = data; 5439 int rc; 5440 5441 /* Lock-free, other users will block until we are done. */ 5442 disc = card->discipline; 5443 5444 QETH_CARD_TEXT(card, 2, "recover1"); 5445 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 5446 return 0; 5447 QETH_CARD_TEXT(card, 2, "recover2"); 5448 dev_warn(&card->gdev->dev, 5449 "A recovery process has been started for the device\n"); 5450 5451 qeth_set_offline(card, disc, true); 5452 rc = qeth_set_online(card, disc); 5453 if (!rc) { 5454 dev_info(&card->gdev->dev, 5455 "Device successfully recovered!\n"); 5456 } else { 5457 qeth_set_offline(card, disc, true); 5458 ccwgroup_set_offline(card->gdev, false); 5459 dev_warn(&card->gdev->dev, 5460 "The qeth device driver failed to recover an error on the device\n"); 5461 } 5462 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 5463 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 5464 return 0; 5465} 5466 5467#if IS_ENABLED(CONFIG_QETH_L3) 5468static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb, 5469 struct qeth_hdr *hdr) 5470{ 5471 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data; 5472 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; 5473 struct net_device *dev = skb->dev; 5474 5475 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) { 5476 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr, 5477 "FAKELL", skb->len); 5478 return; 5479 } 5480 5481 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) { 5482 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 : 5483 ETH_P_IP; 5484 unsigned char tg_addr[ETH_ALEN]; 5485 5486 skb_reset_network_header(skb); 5487 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) { 5488 case QETH_CAST_MULTICAST: 5489 if (prot == ETH_P_IP) 5490 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr); 5491 else 5492 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr); 5493 QETH_CARD_STAT_INC(card, rx_multicast); 5494 break; 5495 case QETH_CAST_BROADCAST: 5496 ether_addr_copy(tg_addr, dev->broadcast); 5497 QETH_CARD_STAT_INC(card, rx_multicast); 5498 break; 5499 default: 5500 if (card->options.sniffer) 5501 skb->pkt_type = PACKET_OTHERHOST; 5502 ether_addr_copy(tg_addr, dev->dev_addr); 5503 } 5504 5505 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 5506 dev_hard_header(skb, dev, prot, tg_addr, 5507 &l3_hdr->next_hop.rx.src_mac, skb->len); 5508 else 5509 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL", 5510 skb->len); 5511 } 5512 5513 /* copy VLAN tag from hdr into skb */ 5514 if (!card->options.sniffer && 5515 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME | 5516 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) { 5517 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 5518 l3_hdr->vlan_id : 5519 l3_hdr->next_hop.rx.vlan_id; 5520 5521 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); 5522 } 5523} 5524#endif 5525 5526static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb, 5527 bool uses_frags, bool is_cso) 5528{ 5529 struct napi_struct *napi = &card->napi; 5530 5531 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) { 5532 skb->ip_summed = CHECKSUM_UNNECESSARY; 5533 QETH_CARD_STAT_INC(card, rx_skb_csum); 5534 } else { 5535 skb->ip_summed = CHECKSUM_NONE; 5536 } 5537 5538 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len); 5539 QETH_CARD_STAT_INC(card, rx_packets); 5540 if (skb_is_nonlinear(skb)) { 5541 QETH_CARD_STAT_INC(card, rx_sg_skbs); 5542 QETH_CARD_STAT_ADD(card, rx_sg_frags, 5543 skb_shinfo(skb)->nr_frags); 5544 } 5545 5546 if (uses_frags) { 5547 napi_gro_frags(napi); 5548 } else { 5549 skb->protocol = eth_type_trans(skb, skb->dev); 5550 napi_gro_receive(napi, skb); 5551 } 5552} 5553 5554static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len) 5555{ 5556 struct page *page = virt_to_page(data); 5557 unsigned int next_frag; 5558 5559 next_frag = skb_shinfo(skb)->nr_frags; 5560 get_page(page); 5561 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len, 5562 data_len); 5563} 5564 5565static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5566{ 5567 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5568} 5569 5570static int qeth_extract_skb(struct qeth_card *card, 5571 struct qeth_qdio_buffer *qethbuffer, u8 *element_no, 5572 int *__offset) 5573{ 5574 struct qeth_priv *priv = netdev_priv(card->dev); 5575 struct qdio_buffer *buffer = qethbuffer->buffer; 5576 struct napi_struct *napi = &card->napi; 5577 struct qdio_buffer_element *element; 5578 unsigned int linear_len = 0; 5579 bool uses_frags = false; 5580 int offset = *__offset; 5581 bool use_rx_sg = false; 5582 unsigned int headroom; 5583 struct qeth_hdr *hdr; 5584 struct sk_buff *skb; 5585 int skb_len = 0; 5586 bool is_cso; 5587 5588 element = &buffer->element[*element_no]; 5589 5590next_packet: 5591 /* qeth_hdr must not cross element boundaries */ 5592 while (element->length < offset + sizeof(struct qeth_hdr)) { 5593 if (qeth_is_last_sbale(element)) 5594 return -ENODATA; 5595 element++; 5596 offset = 0; 5597 } 5598 5599 hdr = dma64_to_virt(element->addr) + offset; 5600 offset += sizeof(*hdr); 5601 skb = NULL; 5602 5603 switch (hdr->hdr.l2.id) { 5604 case QETH_HEADER_TYPE_LAYER2: 5605 skb_len = hdr->hdr.l2.pkt_length; 5606 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ; 5607 5608 linear_len = ETH_HLEN; 5609 headroom = 0; 5610 break; 5611 case QETH_HEADER_TYPE_LAYER3: 5612 skb_len = hdr->hdr.l3.length; 5613 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ; 5614 5615 if (!IS_LAYER3(card)) { 5616 QETH_CARD_STAT_INC(card, rx_dropped_notsupp); 5617 goto walk_packet; 5618 } 5619 5620 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) { 5621 linear_len = ETH_HLEN; 5622 headroom = 0; 5623 break; 5624 } 5625 5626 if (hdr->hdr.l3.flags & QETH_HDR_IPV6) 5627 linear_len = sizeof(struct ipv6hdr); 5628 else 5629 linear_len = sizeof(struct iphdr); 5630 headroom = ETH_HLEN; 5631 break; 5632 default: 5633 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL) 5634 QETH_CARD_STAT_INC(card, rx_frame_errors); 5635 else 5636 QETH_CARD_STAT_INC(card, rx_dropped_notsupp); 5637 5638 /* Can't determine packet length, drop the whole buffer. */ 5639 return -EPROTONOSUPPORT; 5640 } 5641 5642 if (skb_len < linear_len) { 5643 QETH_CARD_STAT_INC(card, rx_dropped_runt); 5644 goto walk_packet; 5645 } 5646 5647 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) || 5648 (skb_len > READ_ONCE(priv->rx_copybreak) && 5649 !atomic_read(&card->force_alloc_skb)); 5650 5651 if (use_rx_sg) { 5652 /* QETH_CQ_ENABLED only: */ 5653 if (qethbuffer->rx_skb && 5654 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) { 5655 skb = qethbuffer->rx_skb; 5656 qethbuffer->rx_skb = NULL; 5657 goto use_skb; 5658 } 5659 5660 skb = napi_get_frags(napi); 5661 if (!skb) { 5662 /* -ENOMEM, no point in falling back further. */ 5663 QETH_CARD_STAT_INC(card, rx_dropped_nomem); 5664 goto walk_packet; 5665 } 5666 5667 if (skb_tailroom(skb) >= linear_len + headroom) { 5668 uses_frags = true; 5669 goto use_skb; 5670 } 5671 5672 netdev_info_once(card->dev, 5673 "Insufficient linear space in NAPI frags skb, need %u but have %u\n", 5674 linear_len + headroom, skb_tailroom(skb)); 5675 /* Shouldn't happen. Don't optimize, fall back to linear skb. */ 5676 } 5677 5678 linear_len = skb_len; 5679 skb = napi_alloc_skb(napi, linear_len + headroom); 5680 if (!skb) { 5681 QETH_CARD_STAT_INC(card, rx_dropped_nomem); 5682 goto walk_packet; 5683 } 5684 5685use_skb: 5686 if (headroom) 5687 skb_reserve(skb, headroom); 5688walk_packet: 5689 while (skb_len) { 5690 int data_len = min(skb_len, (int)(element->length - offset)); 5691 char *data = dma64_to_virt(element->addr) + offset; 5692 5693 skb_len -= data_len; 5694 offset += data_len; 5695 5696 /* Extract data from current element: */ 5697 if (skb && data_len) { 5698 if (linear_len) { 5699 unsigned int copy_len; 5700 5701 copy_len = min_t(unsigned int, linear_len, 5702 data_len); 5703 5704 skb_put_data(skb, data, copy_len); 5705 linear_len -= copy_len; 5706 data_len -= copy_len; 5707 data += copy_len; 5708 } 5709 5710 if (data_len) 5711 qeth_create_skb_frag(skb, data, data_len); 5712 } 5713 5714 /* Step forward to next element: */ 5715 if (skb_len) { 5716 if (qeth_is_last_sbale(element)) { 5717 QETH_CARD_TEXT(card, 4, "unexeob"); 5718 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5719 if (skb) { 5720 if (uses_frags) 5721 napi_free_frags(napi); 5722 else 5723 kfree_skb(skb); 5724 QETH_CARD_STAT_INC(card, 5725 rx_length_errors); 5726 } 5727 return -EMSGSIZE; 5728 } 5729 element++; 5730 offset = 0; 5731 } 5732 } 5733 5734 /* This packet was skipped, go get another one: */ 5735 if (!skb) 5736 goto next_packet; 5737 5738 *element_no = element - &buffer->element[0]; 5739 *__offset = offset; 5740 5741#if IS_ENABLED(CONFIG_QETH_L3) 5742 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3) 5743 qeth_l3_rebuild_skb(card, skb, hdr); 5744#endif 5745 5746 qeth_receive_skb(card, skb, uses_frags, is_cso); 5747 return 0; 5748} 5749 5750static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget, 5751 struct qeth_qdio_buffer *buf, bool *done) 5752{ 5753 unsigned int work_done = 0; 5754 5755 while (budget) { 5756 if (qeth_extract_skb(card, buf, &card->rx.buf_element, 5757 &card->rx.e_offset)) { 5758 *done = true; 5759 break; 5760 } 5761 5762 work_done++; 5763 budget--; 5764 } 5765 5766 return work_done; 5767} 5768 5769static unsigned int qeth_rx_poll(struct qeth_card *card, int budget) 5770{ 5771 struct qeth_rx *ctx = &card->rx; 5772 unsigned int work_done = 0; 5773 5774 while (budget > 0) { 5775 struct qeth_qdio_buffer *buffer; 5776 unsigned int skbs_done = 0; 5777 bool done = false; 5778 5779 /* Fetch completed RX buffers: */ 5780 if (!card->rx.b_count) { 5781 card->rx.qdio_err = 0; 5782 card->rx.b_count = 5783 qdio_inspect_input_queue(CARD_DDEV(card), 0, 5784 &card->rx.b_index, 5785 &card->rx.qdio_err); 5786 if (card->rx.b_count <= 0) { 5787 card->rx.b_count = 0; 5788 break; 5789 } 5790 } 5791 5792 /* Process one completed RX buffer: */ 5793 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5794 if (!(card->rx.qdio_err && 5795 qeth_check_qdio_errors(card, buffer->buffer, 5796 card->rx.qdio_err, "qinerr"))) 5797 skbs_done = qeth_extract_skbs(card, budget, buffer, 5798 &done); 5799 else 5800 done = true; 5801 5802 work_done += skbs_done; 5803 budget -= skbs_done; 5804 5805 if (done) { 5806 QETH_CARD_STAT_INC(card, rx_bufs); 5807 qeth_put_buffer_pool_entry(card, buffer->pool_entry); 5808 buffer->pool_entry = NULL; 5809 card->rx.b_count--; 5810 ctx->bufs_refill++; 5811 ctx->bufs_refill -= qeth_rx_refill_queue(card, 5812 ctx->bufs_refill); 5813 5814 /* Step forward to next buffer: */ 5815 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1); 5816 card->rx.buf_element = 0; 5817 card->rx.e_offset = 0; 5818 } 5819 } 5820 5821 return work_done; 5822} 5823 5824static void qeth_cq_poll(struct qeth_card *card) 5825{ 5826 unsigned int work_done = 0; 5827 5828 while (work_done < QDIO_MAX_BUFFERS_PER_Q) { 5829 unsigned int start, error; 5830 int completed; 5831 5832 completed = qdio_inspect_input_queue(CARD_DDEV(card), 1, &start, 5833 &error); 5834 if (completed <= 0) 5835 return; 5836 5837 qeth_qdio_cq_handler(card, error, 1, start, completed); 5838 work_done += completed; 5839 } 5840} 5841 5842int qeth_poll(struct napi_struct *napi, int budget) 5843{ 5844 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5845 unsigned int work_done; 5846 5847 work_done = qeth_rx_poll(card, budget); 5848 5849 if (qeth_use_tx_irqs(card)) { 5850 struct qeth_qdio_out_q *queue; 5851 unsigned int i; 5852 5853 qeth_for_each_output_queue(card, queue, i) { 5854 if (!qeth_out_queue_is_empty(queue)) 5855 napi_schedule(&queue->napi); 5856 } 5857 } 5858 5859 if (card->options.cq == QETH_CQ_ENABLED) 5860 qeth_cq_poll(card); 5861 5862 if (budget) { 5863 struct qeth_rx *ctx = &card->rx; 5864 5865 /* Process any substantial refill backlog: */ 5866 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill); 5867 5868 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */ 5869 if (work_done >= budget) 5870 return work_done; 5871 } 5872 5873 if (napi_complete_done(napi, work_done) && 5874 qdio_start_irq(CARD_DDEV(card))) 5875 napi_schedule(napi); 5876 5877 return work_done; 5878} 5879EXPORT_SYMBOL_GPL(qeth_poll); 5880 5881static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue, 5882 unsigned int bidx, unsigned int qdio_error, 5883 int budget) 5884{ 5885 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx]; 5886 u8 sflags = buffer->buffer->element[15].sflags; 5887 struct qeth_card *card = queue->card; 5888 bool error = !!qdio_error; 5889 5890 if (qdio_error == QDIO_ERROR_SLSB_PENDING) { 5891 struct qaob *aob = buffer->aob; 5892 struct qeth_qaob_priv1 *priv; 5893 enum iucv_tx_notify notify; 5894 5895 if (!aob) { 5896 netdev_WARN_ONCE(card->dev, 5897 "Pending TX buffer %#x without QAOB on TX queue %u\n", 5898 bidx, queue->queue_no); 5899 qeth_schedule_recovery(card); 5900 return; 5901 } 5902 5903 QETH_CARD_TEXT_(card, 5, "pel%u", bidx); 5904 5905 priv = (struct qeth_qaob_priv1 *)&aob->user1; 5906 /* QAOB hasn't completed yet: */ 5907 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) { 5908 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING); 5909 5910 /* Prepare the queue slot for immediate re-use: */ 5911 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements); 5912 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) { 5913 QETH_CARD_TEXT(card, 2, "outofbuf"); 5914 qeth_schedule_recovery(card); 5915 } 5916 5917 list_add(&buffer->list_entry, &queue->pending_bufs); 5918 /* Skip clearing the buffer: */ 5919 return; 5920 } 5921 5922 /* QAOB already completed: */ 5923 notify = qeth_compute_cq_notification(aob->aorc, 0); 5924 qeth_notify_skbs(queue, buffer, notify); 5925 error = !!aob->aorc; 5926 memset(aob, 0, sizeof(*aob)); 5927 } else if (card->options.cq == QETH_CQ_ENABLED) { 5928 qeth_notify_skbs(queue, buffer, 5929 qeth_compute_cq_notification(sflags, 0)); 5930 } 5931 5932 qeth_clear_output_buffer(queue, buffer, error, budget); 5933} 5934 5935static int qeth_tx_poll(struct napi_struct *napi, int budget) 5936{ 5937 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi); 5938 unsigned int queue_no = queue->queue_no; 5939 struct qeth_card *card = queue->card; 5940 struct net_device *dev = card->dev; 5941 unsigned int work_done = 0; 5942 struct netdev_queue *txq; 5943 5944 if (IS_IQD(card)) 5945 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no)); 5946 else 5947 txq = netdev_get_tx_queue(dev, queue_no); 5948 5949 while (1) { 5950 unsigned int start, error, i; 5951 unsigned int packets = 0; 5952 unsigned int bytes = 0; 5953 int completed; 5954 5955 qeth_tx_complete_pending_bufs(card, queue, false, budget); 5956 5957 if (qeth_out_queue_is_empty(queue)) { 5958 napi_complete(napi); 5959 return 0; 5960 } 5961 5962 /* Give the CPU a breather: */ 5963 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) { 5964 QETH_TXQ_STAT_INC(queue, completion_yield); 5965 if (napi_complete_done(napi, 0)) 5966 napi_schedule(napi); 5967 return 0; 5968 } 5969 5970 completed = qdio_inspect_output_queue(CARD_DDEV(card), queue_no, 5971 &start, &error); 5972 if (completed <= 0) { 5973 /* Ensure we see TX completion for pending work: */ 5974 if (napi_complete_done(napi, 0) && 5975 !atomic_read(&queue->set_pci_flags_count)) 5976 qeth_tx_arm_timer(queue, queue->rescan_usecs); 5977 return 0; 5978 } 5979 5980 for (i = start; i < start + completed; i++) { 5981 struct qeth_qdio_out_buffer *buffer; 5982 unsigned int bidx = QDIO_BUFNR(i); 5983 5984 buffer = queue->bufs[bidx]; 5985 packets += buffer->frames; 5986 bytes += buffer->bytes; 5987 5988 qeth_handle_send_error(card, buffer, error); 5989 if (IS_IQD(card)) 5990 qeth_iqd_tx_complete(queue, bidx, error, budget); 5991 else 5992 qeth_clear_output_buffer(queue, buffer, error, 5993 budget); 5994 } 5995 5996 atomic_sub(completed, &queue->used_buffers); 5997 work_done += completed; 5998 if (IS_IQD(card)) 5999 netdev_tx_completed_queue(txq, packets, bytes); 6000 else 6001 qeth_check_outbound_queue(queue); 6002 6003 /* xmit may have observed the full-condition, but not yet 6004 * stopped the txq. In which case the code below won't trigger. 6005 * So before returning, xmit will re-check the txq's fill level 6006 * and wake it up if needed. 6007 */ 6008 if (netif_tx_queue_stopped(txq) && 6009 !qeth_out_queue_is_full(queue)) 6010 netif_tx_wake_queue(txq); 6011 } 6012} 6013 6014static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 6015{ 6016 if (!cmd->hdr.return_code) 6017 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 6018 return cmd->hdr.return_code; 6019} 6020 6021static int qeth_setassparms_get_caps_cb(struct qeth_card *card, 6022 struct qeth_reply *reply, 6023 unsigned long data) 6024{ 6025 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6026 struct qeth_ipa_caps *caps = reply->param; 6027 6028 if (qeth_setassparms_inspect_rc(cmd)) 6029 return -EIO; 6030 6031 caps->supported = cmd->data.setassparms.data.caps.supported; 6032 caps->enabled = cmd->data.setassparms.data.caps.enabled; 6033 return 0; 6034} 6035 6036int qeth_setassparms_cb(struct qeth_card *card, 6037 struct qeth_reply *reply, unsigned long data) 6038{ 6039 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6040 6041 QETH_CARD_TEXT(card, 4, "defadpcb"); 6042 6043 if (cmd->hdr.return_code) 6044 return -EIO; 6045 6046 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 6047 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 6048 card->options.ipa4.enabled = cmd->hdr.assists.enabled; 6049 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 6050 card->options.ipa6.enabled = cmd->hdr.assists.enabled; 6051 return 0; 6052} 6053EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 6054 6055struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 6056 enum qeth_ipa_funcs ipa_func, 6057 u16 cmd_code, 6058 unsigned int data_length, 6059 enum qeth_prot_versions prot) 6060{ 6061 struct qeth_ipacmd_setassparms *setassparms; 6062 struct qeth_ipacmd_setassparms_hdr *hdr; 6063 struct qeth_cmd_buffer *iob; 6064 6065 QETH_CARD_TEXT(card, 4, "getasscm"); 6066 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot, 6067 data_length + 6068 offsetof(struct qeth_ipacmd_setassparms, 6069 data)); 6070 if (!iob) 6071 return NULL; 6072 6073 setassparms = &__ipa_cmd(iob)->data.setassparms; 6074 setassparms->assist_no = ipa_func; 6075 6076 hdr = &setassparms->hdr; 6077 hdr->length = sizeof(*hdr) + data_length; 6078 hdr->command_code = cmd_code; 6079 return iob; 6080} 6081EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 6082 6083int qeth_send_simple_setassparms_prot(struct qeth_card *card, 6084 enum qeth_ipa_funcs ipa_func, 6085 u16 cmd_code, u32 *data, 6086 enum qeth_prot_versions prot) 6087{ 6088 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0; 6089 struct qeth_cmd_buffer *iob; 6090 6091 QETH_CARD_TEXT_(card, 4, "simassp%i", prot); 6092 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); 6093 if (!iob) 6094 return -ENOMEM; 6095 6096 if (data) 6097 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data; 6098 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL); 6099} 6100EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 6101 6102static void qeth_unregister_dbf_views(void) 6103{ 6104 int x; 6105 6106 for (x = 0; x < QETH_DBF_INFOS; x++) { 6107 debug_unregister(qeth_dbf[x].id); 6108 qeth_dbf[x].id = NULL; 6109 } 6110} 6111 6112void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 6113{ 6114 char dbf_txt_buf[32]; 6115 va_list args; 6116 6117 if (!debug_level_enabled(id, level)) 6118 return; 6119 va_start(args, fmt); 6120 vscnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 6121 va_end(args); 6122 debug_text_event(id, level, dbf_txt_buf); 6123} 6124EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 6125 6126static int qeth_register_dbf_views(void) 6127{ 6128 int ret; 6129 int x; 6130 6131 for (x = 0; x < QETH_DBF_INFOS; x++) { 6132 /* register the areas */ 6133 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 6134 qeth_dbf[x].pages, 6135 qeth_dbf[x].areas, 6136 qeth_dbf[x].len); 6137 if (qeth_dbf[x].id == NULL) { 6138 qeth_unregister_dbf_views(); 6139 return -ENOMEM; 6140 } 6141 6142 /* register a view */ 6143 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 6144 if (ret) { 6145 qeth_unregister_dbf_views(); 6146 return ret; 6147 } 6148 6149 /* set a passing level */ 6150 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 6151 } 6152 6153 return 0; 6154} 6155 6156static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */ 6157 6158int qeth_setup_discipline(struct qeth_card *card, 6159 enum qeth_discipline_id discipline) 6160{ 6161 int rc; 6162 6163 mutex_lock(&qeth_mod_mutex); 6164 switch (discipline) { 6165 case QETH_DISCIPLINE_LAYER3: 6166 card->discipline = try_then_request_module( 6167 symbol_get(qeth_l3_discipline), "qeth_l3"); 6168 break; 6169 case QETH_DISCIPLINE_LAYER2: 6170 card->discipline = try_then_request_module( 6171 symbol_get(qeth_l2_discipline), "qeth_l2"); 6172 break; 6173 default: 6174 break; 6175 } 6176 mutex_unlock(&qeth_mod_mutex); 6177 6178 if (!card->discipline) { 6179 dev_err(&card->gdev->dev, "There is no kernel module to " 6180 "support discipline %d\n", discipline); 6181 return -EINVAL; 6182 } 6183 6184 rc = card->discipline->setup(card->gdev); 6185 if (rc) { 6186 if (discipline == QETH_DISCIPLINE_LAYER2) 6187 symbol_put(qeth_l2_discipline); 6188 else 6189 symbol_put(qeth_l3_discipline); 6190 card->discipline = NULL; 6191 6192 return rc; 6193 } 6194 6195 card->options.layer = discipline; 6196 return 0; 6197} 6198 6199void qeth_remove_discipline(struct qeth_card *card) 6200{ 6201 card->discipline->remove(card->gdev); 6202 6203 if (IS_LAYER2(card)) 6204 symbol_put(qeth_l2_discipline); 6205 else 6206 symbol_put(qeth_l3_discipline); 6207 card->options.layer = QETH_DISCIPLINE_UNDETERMINED; 6208 card->discipline = NULL; 6209} 6210 6211static const struct device_type qeth_generic_devtype = { 6212 .name = "qeth_generic", 6213}; 6214 6215#define DBF_NAME_LEN 20 6216 6217struct qeth_dbf_entry { 6218 char dbf_name[DBF_NAME_LEN]; 6219 debug_info_t *dbf_info; 6220 struct list_head dbf_list; 6221}; 6222 6223static LIST_HEAD(qeth_dbf_list); 6224static DEFINE_MUTEX(qeth_dbf_list_mutex); 6225 6226static debug_info_t *qeth_get_dbf_entry(char *name) 6227{ 6228 struct qeth_dbf_entry *entry; 6229 debug_info_t *rc = NULL; 6230 6231 mutex_lock(&qeth_dbf_list_mutex); 6232 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 6233 if (strcmp(entry->dbf_name, name) == 0) { 6234 rc = entry->dbf_info; 6235 break; 6236 } 6237 } 6238 mutex_unlock(&qeth_dbf_list_mutex); 6239 return rc; 6240} 6241 6242static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 6243{ 6244 struct qeth_dbf_entry *new_entry; 6245 6246 card->debug = debug_register(name, 2, 1, 8); 6247 if (!card->debug) { 6248 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 6249 goto err; 6250 } 6251 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 6252 goto err_dbg; 6253 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 6254 if (!new_entry) 6255 goto err_dbg; 6256 strscpy(new_entry->dbf_name, name, sizeof(new_entry->dbf_name)); 6257 new_entry->dbf_info = card->debug; 6258 mutex_lock(&qeth_dbf_list_mutex); 6259 list_add(&new_entry->dbf_list, &qeth_dbf_list); 6260 mutex_unlock(&qeth_dbf_list_mutex); 6261 6262 return 0; 6263 6264err_dbg: 6265 debug_unregister(card->debug); 6266err: 6267 return -ENOMEM; 6268} 6269 6270static void qeth_clear_dbf_list(void) 6271{ 6272 struct qeth_dbf_entry *entry, *tmp; 6273 6274 mutex_lock(&qeth_dbf_list_mutex); 6275 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 6276 list_del(&entry->dbf_list); 6277 debug_unregister(entry->dbf_info); 6278 kfree(entry); 6279 } 6280 mutex_unlock(&qeth_dbf_list_mutex); 6281} 6282 6283static struct net_device *qeth_alloc_netdev(struct qeth_card *card) 6284{ 6285 struct net_device *dev; 6286 struct qeth_priv *priv; 6287 6288 switch (card->info.type) { 6289 case QETH_CARD_TYPE_IQD: 6290 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN, 6291 ether_setup, QETH_MAX_OUT_QUEUES, 1); 6292 break; 6293 case QETH_CARD_TYPE_OSM: 6294 dev = alloc_etherdev(sizeof(*priv)); 6295 break; 6296 default: 6297 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1); 6298 } 6299 6300 if (!dev) 6301 return NULL; 6302 6303 priv = netdev_priv(dev); 6304 priv->rx_copybreak = QETH_RX_COPYBREAK; 6305 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1; 6306 6307 dev->ml_priv = card; 6308 dev->watchdog_timeo = QETH_TX_TIMEOUT; 6309 dev->min_mtu = 576; 6310 /* initialized when device first goes online: */ 6311 dev->max_mtu = 0; 6312 dev->mtu = 0; 6313 SET_NETDEV_DEV(dev, &card->gdev->dev); 6314 netif_carrier_off(dev); 6315 6316 dev->ethtool_ops = &qeth_ethtool_ops; 6317 dev->priv_flags &= ~IFF_TX_SKB_SHARING; 6318 dev->hw_features |= NETIF_F_SG; 6319 dev->vlan_features |= NETIF_F_SG; 6320 if (IS_IQD(card)) 6321 dev->features |= NETIF_F_SG; 6322 6323 return dev; 6324} 6325 6326struct net_device *qeth_clone_netdev(struct net_device *orig) 6327{ 6328 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv); 6329 6330 if (!clone) 6331 return NULL; 6332 6333 clone->dev_port = orig->dev_port; 6334 return clone; 6335} 6336 6337static int qeth_core_probe_device(struct ccwgroup_device *gdev) 6338{ 6339 struct qeth_card *card; 6340 struct device *dev; 6341 int rc; 6342 enum qeth_discipline_id enforced_disc; 6343 char dbf_name[DBF_NAME_LEN]; 6344 6345 QETH_DBF_TEXT(SETUP, 2, "probedev"); 6346 6347 dev = &gdev->dev; 6348 if (!get_device(dev)) 6349 return -ENODEV; 6350 6351 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 6352 6353 card = qeth_alloc_card(gdev); 6354 if (!card) { 6355 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 6356 rc = -ENOMEM; 6357 goto err_dev; 6358 } 6359 6360 scnprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 6361 dev_name(&gdev->dev)); 6362 card->debug = qeth_get_dbf_entry(dbf_name); 6363 if (!card->debug) { 6364 rc = qeth_add_dbf_entry(card, dbf_name); 6365 if (rc) 6366 goto err_card; 6367 } 6368 6369 qeth_setup_card(card); 6370 card->dev = qeth_alloc_netdev(card); 6371 if (!card->dev) { 6372 rc = -ENOMEM; 6373 goto err_card; 6374 } 6375 6376 qeth_determine_capabilities(card); 6377 qeth_set_blkt_defaults(card); 6378 6379 card->qdio.in_q = qeth_alloc_qdio_queue(); 6380 if (!card->qdio.in_q) { 6381 rc = -ENOMEM; 6382 goto err_rx_queue; 6383 } 6384 6385 card->qdio.no_out_queues = card->dev->num_tx_queues; 6386 rc = qeth_update_from_chp_desc(card); 6387 if (rc) 6388 goto err_chp_desc; 6389 6390 gdev->dev.groups = qeth_dev_groups; 6391 6392 enforced_disc = qeth_enforce_discipline(card); 6393 switch (enforced_disc) { 6394 case QETH_DISCIPLINE_UNDETERMINED: 6395 gdev->dev.type = &qeth_generic_devtype; 6396 break; 6397 default: 6398 card->info.layer_enforced = true; 6399 /* It's so early that we don't need the discipline_mutex yet. */ 6400 rc = qeth_setup_discipline(card, enforced_disc); 6401 if (rc) 6402 goto err_setup_disc; 6403 6404 break; 6405 } 6406 6407 return 0; 6408 6409err_setup_disc: 6410err_chp_desc: 6411 qeth_free_qdio_queue(card->qdio.in_q); 6412err_rx_queue: 6413 free_netdev(card->dev); 6414err_card: 6415 qeth_core_free_card(card); 6416err_dev: 6417 put_device(dev); 6418 return rc; 6419} 6420 6421static void qeth_core_remove_device(struct ccwgroup_device *gdev) 6422{ 6423 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 6424 6425 QETH_CARD_TEXT(card, 2, "removedv"); 6426 6427 mutex_lock(&card->discipline_mutex); 6428 if (card->discipline) 6429 qeth_remove_discipline(card); 6430 mutex_unlock(&card->discipline_mutex); 6431 6432 qeth_free_qdio_queues(card); 6433 6434 qeth_free_qdio_queue(card->qdio.in_q); 6435 free_netdev(card->dev); 6436 qeth_core_free_card(card); 6437 put_device(&gdev->dev); 6438} 6439 6440static int qeth_core_set_online(struct ccwgroup_device *gdev) 6441{ 6442 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 6443 int rc = 0; 6444 enum qeth_discipline_id def_discipline; 6445 6446 mutex_lock(&card->discipline_mutex); 6447 if (!card->discipline) { 6448 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : 6449 QETH_DISCIPLINE_LAYER2; 6450 rc = qeth_setup_discipline(card, def_discipline); 6451 if (rc) 6452 goto err; 6453 } 6454 6455 rc = qeth_set_online(card, card->discipline); 6456 6457err: 6458 mutex_unlock(&card->discipline_mutex); 6459 return rc; 6460} 6461 6462static int qeth_core_set_offline(struct ccwgroup_device *gdev) 6463{ 6464 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 6465 int rc; 6466 6467 mutex_lock(&card->discipline_mutex); 6468 rc = qeth_set_offline(card, card->discipline, false); 6469 mutex_unlock(&card->discipline_mutex); 6470 6471 return rc; 6472} 6473 6474static void qeth_core_shutdown(struct ccwgroup_device *gdev) 6475{ 6476 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 6477 6478 qeth_set_allowed_threads(card, 0, 1); 6479 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 6480 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 6481 qeth_qdio_clear_card(card, 0); 6482 qeth_drain_output_queues(card); 6483 qdio_free(CARD_DDEV(card)); 6484} 6485 6486static ssize_t group_store(struct device_driver *ddrv, const char *buf, 6487 size_t count) 6488{ 6489 int err; 6490 6491 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3, 6492 buf); 6493 6494 return err ? err : count; 6495} 6496static DRIVER_ATTR_WO(group); 6497 6498static struct attribute *qeth_drv_attrs[] = { 6499 &driver_attr_group.attr, 6500 NULL, 6501}; 6502static struct attribute_group qeth_drv_attr_group = { 6503 .attrs = qeth_drv_attrs, 6504}; 6505static const struct attribute_group *qeth_drv_attr_groups[] = { 6506 &qeth_drv_attr_group, 6507 NULL, 6508}; 6509 6510static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 6511 .driver = { 6512 .groups = qeth_drv_attr_groups, 6513 .owner = THIS_MODULE, 6514 .name = "qeth", 6515 }, 6516 .ccw_driver = &qeth_ccw_driver, 6517 .setup = qeth_core_probe_device, 6518 .remove = qeth_core_remove_device, 6519 .set_online = qeth_core_set_online, 6520 .set_offline = qeth_core_set_offline, 6521 .shutdown = qeth_core_shutdown, 6522}; 6523 6524int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd) 6525{ 6526 struct qeth_card *card = dev->ml_priv; 6527 int rc = 0; 6528 6529 switch (cmd) { 6530 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 6531 rc = qeth_snmp_command(card, data); 6532 break; 6533 case SIOC_QETH_GET_CARD_TYPE: 6534 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) && 6535 !IS_VM_NIC(card)) 6536 return 1; 6537 return 0; 6538 case SIOC_QETH_QUERY_OAT: 6539 rc = qeth_query_oat_command(card, data); 6540 break; 6541 default: 6542 rc = -EOPNOTSUPP; 6543 } 6544 if (rc) 6545 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 6546 return rc; 6547} 6548EXPORT_SYMBOL_GPL(qeth_siocdevprivate); 6549 6550int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 6551{ 6552 struct qeth_card *card = dev->ml_priv; 6553 struct mii_ioctl_data *mii_data; 6554 int rc = 0; 6555 6556 switch (cmd) { 6557 case SIOCGMIIPHY: 6558 mii_data = if_mii(rq); 6559 mii_data->phy_id = 0; 6560 break; 6561 case SIOCGMIIREG: 6562 mii_data = if_mii(rq); 6563 if (mii_data->phy_id != 0) 6564 rc = -EINVAL; 6565 else 6566 mii_data->val_out = qeth_mdio_read(dev, 6567 mii_data->phy_id, mii_data->reg_num); 6568 break; 6569 default: 6570 return -EOPNOTSUPP; 6571 } 6572 if (rc) 6573 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 6574 return rc; 6575} 6576EXPORT_SYMBOL_GPL(qeth_do_ioctl); 6577 6578static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply, 6579 unsigned long data) 6580{ 6581 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6582 u32 *features = reply->param; 6583 6584 if (qeth_setassparms_inspect_rc(cmd)) 6585 return -EIO; 6586 6587 *features = cmd->data.setassparms.data.flags_32bit; 6588 return 0; 6589} 6590 6591static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype, 6592 enum qeth_prot_versions prot) 6593{ 6594 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP, 6595 NULL, prot); 6596} 6597 6598static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, 6599 enum qeth_prot_versions prot, u8 *lp2lp) 6600{ 6601 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; 6602 struct qeth_cmd_buffer *iob; 6603 struct qeth_ipa_caps caps; 6604 u32 features; 6605 int rc; 6606 6607 /* some L3 HW requires combined L3+L4 csum offload: */ 6608 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 && 6609 cstype == IPA_OUTBOUND_CHECKSUM) 6610 required_features |= QETH_IPA_CHECKSUM_IP_HDR; 6611 6612 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6613 prot); 6614 if (!iob) 6615 return -ENOMEM; 6616 6617 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features); 6618 if (rc) 6619 return rc; 6620 6621 if ((required_features & features) != required_features) { 6622 qeth_set_csum_off(card, cstype, prot); 6623 return -EOPNOTSUPP; 6624 } 6625 6626 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6627 SETASS_DATA_SIZEOF(flags_32bit), 6628 prot); 6629 if (!iob) { 6630 qeth_set_csum_off(card, cstype, prot); 6631 return -ENOMEM; 6632 } 6633 6634 if (features & QETH_IPA_CHECKSUM_LP2LP) 6635 required_features |= QETH_IPA_CHECKSUM_LP2LP; 6636 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features; 6637 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); 6638 if (rc) { 6639 qeth_set_csum_off(card, cstype, prot); 6640 return rc; 6641 } 6642 6643 if (!qeth_ipa_caps_supported(&caps, required_features) || 6644 !qeth_ipa_caps_enabled(&caps, required_features)) { 6645 qeth_set_csum_off(card, cstype, prot); 6646 return -EOPNOTSUPP; 6647 } 6648 6649 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", 6650 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); 6651 6652 if (lp2lp) 6653 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP); 6654 6655 return 0; 6656} 6657 6658static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, 6659 enum qeth_prot_versions prot, u8 *lp2lp) 6660{ 6661 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) : 6662 qeth_set_csum_off(card, cstype, prot); 6663} 6664 6665static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply, 6666 unsigned long data) 6667{ 6668 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6669 struct qeth_tso_start_data *tso_data = reply->param; 6670 6671 if (qeth_setassparms_inspect_rc(cmd)) 6672 return -EIO; 6673 6674 tso_data->mss = cmd->data.setassparms.data.tso.mss; 6675 tso_data->supported = cmd->data.setassparms.data.tso.supported; 6676 return 0; 6677} 6678 6679static int qeth_set_tso_off(struct qeth_card *card, 6680 enum qeth_prot_versions prot) 6681{ 6682 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO, 6683 IPA_CMD_ASS_STOP, NULL, prot); 6684} 6685 6686static int qeth_set_tso_on(struct qeth_card *card, 6687 enum qeth_prot_versions prot) 6688{ 6689 struct qeth_tso_start_data tso_data; 6690 struct qeth_cmd_buffer *iob; 6691 struct qeth_ipa_caps caps; 6692 int rc; 6693 6694 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6695 IPA_CMD_ASS_START, 0, prot); 6696 if (!iob) 6697 return -ENOMEM; 6698 6699 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data); 6700 if (rc) 6701 return rc; 6702 6703 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) { 6704 qeth_set_tso_off(card, prot); 6705 return -EOPNOTSUPP; 6706 } 6707 6708 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, 6709 IPA_CMD_ASS_ENABLE, 6710 SETASS_DATA_SIZEOF(caps), prot); 6711 if (!iob) { 6712 qeth_set_tso_off(card, prot); 6713 return -ENOMEM; 6714 } 6715 6716 /* enable TSO capability */ 6717 __ipa_cmd(iob)->data.setassparms.data.caps.enabled = 6718 QETH_IPA_LARGE_SEND_TCP; 6719 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); 6720 if (rc) { 6721 qeth_set_tso_off(card, prot); 6722 return rc; 6723 } 6724 6725 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) || 6726 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) { 6727 qeth_set_tso_off(card, prot); 6728 return -EOPNOTSUPP; 6729 } 6730 6731 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot, 6732 tso_data.mss); 6733 return 0; 6734} 6735 6736static int qeth_set_ipa_tso(struct qeth_card *card, bool on, 6737 enum qeth_prot_versions prot) 6738{ 6739 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot); 6740} 6741 6742static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) 6743{ 6744 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; 6745 int rc_ipv6; 6746 6747 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6748 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6749 QETH_PROT_IPV4, NULL); 6750 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6751 /* no/one Offload Assist available, so the rc is trivial */ 6752 return rc_ipv4; 6753 6754 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, 6755 QETH_PROT_IPV6, NULL); 6756 6757 if (on) 6758 /* enable: success if any Assist is active */ 6759 return (rc_ipv6) ? rc_ipv4 : 0; 6760 6761 /* disable: failure if any Assist is still active */ 6762 return (rc_ipv6) ? rc_ipv6 : rc_ipv4; 6763} 6764 6765/** 6766 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features 6767 * @dev: a net_device 6768 */ 6769void qeth_enable_hw_features(struct net_device *dev) 6770{ 6771 struct qeth_card *card = dev->ml_priv; 6772 netdev_features_t features; 6773 6774 features = dev->features; 6775 /* force-off any feature that might need an IPA sequence. 6776 * netdev_update_features() will restart them. 6777 */ 6778 dev->features &= ~dev->hw_features; 6779 /* toggle VLAN filter, so that VIDs are re-programmed: */ 6780 if (IS_LAYER2(card) && IS_VM_NIC(card)) { 6781 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 6782 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 6783 } 6784 netdev_update_features(dev); 6785 if (features != dev->features) 6786 dev_warn(&card->gdev->dev, 6787 "Device recovery failed to restore all offload features\n"); 6788} 6789EXPORT_SYMBOL_GPL(qeth_enable_hw_features); 6790 6791static void qeth_check_restricted_features(struct qeth_card *card, 6792 netdev_features_t changed, 6793 netdev_features_t actual) 6794{ 6795 netdev_features_t ipv6_features = NETIF_F_TSO6; 6796 netdev_features_t ipv4_features = NETIF_F_TSO; 6797 6798 if (!card->info.has_lp2lp_cso_v6) 6799 ipv6_features |= NETIF_F_IPV6_CSUM; 6800 if (!card->info.has_lp2lp_cso_v4) 6801 ipv4_features |= NETIF_F_IP_CSUM; 6802 6803 if ((changed & ipv6_features) && !(actual & ipv6_features)) 6804 qeth_flush_local_addrs6(card); 6805 if ((changed & ipv4_features) && !(actual & ipv4_features)) 6806 qeth_flush_local_addrs4(card); 6807} 6808 6809int qeth_set_features(struct net_device *dev, netdev_features_t features) 6810{ 6811 struct qeth_card *card = dev->ml_priv; 6812 netdev_features_t changed = dev->features ^ features; 6813 int rc = 0; 6814 6815 QETH_CARD_TEXT(card, 2, "setfeat"); 6816 QETH_CARD_HEX(card, 2, &features, sizeof(features)); 6817 6818 if ((changed & NETIF_F_IP_CSUM)) { 6819 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, 6820 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4, 6821 &card->info.has_lp2lp_cso_v4); 6822 if (rc) 6823 changed ^= NETIF_F_IP_CSUM; 6824 } 6825 if (changed & NETIF_F_IPV6_CSUM) { 6826 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, 6827 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6, 6828 &card->info.has_lp2lp_cso_v6); 6829 if (rc) 6830 changed ^= NETIF_F_IPV6_CSUM; 6831 } 6832 if (changed & NETIF_F_RXCSUM) { 6833 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); 6834 if (rc) 6835 changed ^= NETIF_F_RXCSUM; 6836 } 6837 if (changed & NETIF_F_TSO) { 6838 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO, 6839 QETH_PROT_IPV4); 6840 if (rc) 6841 changed ^= NETIF_F_TSO; 6842 } 6843 if (changed & NETIF_F_TSO6) { 6844 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6, 6845 QETH_PROT_IPV6); 6846 if (rc) 6847 changed ^= NETIF_F_TSO6; 6848 } 6849 6850 qeth_check_restricted_features(card, dev->features ^ features, 6851 dev->features ^ changed); 6852 6853 /* everything changed successfully? */ 6854 if ((dev->features ^ features) == changed) 6855 return 0; 6856 /* something went wrong. save changed features and return error */ 6857 dev->features ^= changed; 6858 return -EIO; 6859} 6860EXPORT_SYMBOL_GPL(qeth_set_features); 6861 6862netdev_features_t qeth_fix_features(struct net_device *dev, 6863 netdev_features_t features) 6864{ 6865 struct qeth_card *card = dev->ml_priv; 6866 6867 QETH_CARD_TEXT(card, 2, "fixfeat"); 6868 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6869 features &= ~NETIF_F_IP_CSUM; 6870 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) 6871 features &= ~NETIF_F_IPV6_CSUM; 6872 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && 6873 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) 6874 features &= ~NETIF_F_RXCSUM; 6875 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6876 features &= ~NETIF_F_TSO; 6877 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO)) 6878 features &= ~NETIF_F_TSO6; 6879 6880 QETH_CARD_HEX(card, 2, &features, sizeof(features)); 6881 return features; 6882} 6883EXPORT_SYMBOL_GPL(qeth_fix_features); 6884 6885netdev_features_t qeth_features_check(struct sk_buff *skb, 6886 struct net_device *dev, 6887 netdev_features_t features) 6888{ 6889 struct qeth_card *card = dev->ml_priv; 6890 6891 /* Traffic with local next-hop is not eligible for some offloads: */ 6892 if (skb->ip_summed == CHECKSUM_PARTIAL && 6893 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) { 6894 netdev_features_t restricted = 0; 6895 6896 if (skb_is_gso(skb) && !netif_needs_gso(skb, features)) 6897 restricted |= NETIF_F_ALL_TSO; 6898 6899 switch (vlan_get_protocol(skb)) { 6900 case htons(ETH_P_IP): 6901 if (!card->info.has_lp2lp_cso_v4) 6902 restricted |= NETIF_F_IP_CSUM; 6903 6904 if (restricted && qeth_next_hop_is_local_v4(card, skb)) 6905 features &= ~restricted; 6906 break; 6907 case htons(ETH_P_IPV6): 6908 if (!card->info.has_lp2lp_cso_v6) 6909 restricted |= NETIF_F_IPV6_CSUM; 6910 6911 if (restricted && qeth_next_hop_is_local_v6(card, skb)) 6912 features &= ~restricted; 6913 break; 6914 default: 6915 break; 6916 } 6917 } 6918 6919 /* GSO segmentation builds skbs with 6920 * a (small) linear part for the headers, and 6921 * page frags for the data. 6922 * Compared to a linear skb, the header-only part consumes an 6923 * additional buffer element. This reduces buffer utilization, and 6924 * hurts throughput. So compress small segments into one element. 6925 */ 6926 if (netif_needs_gso(skb, features)) { 6927 /* match skb_segment(): */ 6928 unsigned int doffset = skb->data - skb_mac_header(skb); 6929 unsigned int hsize = skb_shinfo(skb)->gso_size; 6930 unsigned int hroom = skb_headroom(skb); 6931 6932 /* linearize only if resulting skb allocations are order-0: */ 6933 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6934 features &= ~NETIF_F_SG; 6935 } 6936 6937 return vlan_features_check(skb, features); 6938} 6939EXPORT_SYMBOL_GPL(qeth_features_check); 6940 6941void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 6942{ 6943 struct qeth_card *card = dev->ml_priv; 6944 struct qeth_qdio_out_q *queue; 6945 unsigned int i; 6946 6947 QETH_CARD_TEXT(card, 5, "getstat"); 6948 6949 stats->rx_packets = card->stats.rx_packets; 6950 stats->rx_bytes = card->stats.rx_bytes; 6951 stats->rx_errors = card->stats.rx_length_errors + 6952 card->stats.rx_frame_errors + 6953 card->stats.rx_fifo_errors; 6954 stats->rx_dropped = card->stats.rx_dropped_nomem + 6955 card->stats.rx_dropped_notsupp + 6956 card->stats.rx_dropped_runt; 6957 stats->multicast = card->stats.rx_multicast; 6958 stats->rx_length_errors = card->stats.rx_length_errors; 6959 stats->rx_frame_errors = card->stats.rx_frame_errors; 6960 stats->rx_fifo_errors = card->stats.rx_fifo_errors; 6961 6962 for (i = 0; i < card->qdio.no_out_queues; i++) { 6963 queue = card->qdio.out_qs[i]; 6964 6965 stats->tx_packets += queue->stats.tx_packets; 6966 stats->tx_bytes += queue->stats.tx_bytes; 6967 stats->tx_errors += queue->stats.tx_errors; 6968 stats->tx_dropped += queue->stats.tx_dropped; 6969 } 6970} 6971EXPORT_SYMBOL_GPL(qeth_get_stats64); 6972 6973#define TC_IQD_UCAST 0 6974static void qeth_iqd_set_prio_tc_map(struct net_device *dev, 6975 unsigned int ucast_txqs) 6976{ 6977 unsigned int prio; 6978 6979 /* IQD requires mcast traffic to be placed on a dedicated queue, and 6980 * qeth_iqd_select_queue() deals with this. 6981 * For unicast traffic, we defer the queue selection to the stack. 6982 * By installing a trivial prio map that spans over only the unicast 6983 * queues, we can encourage the stack to spread the ucast traffic evenly 6984 * without selecting the mcast queue. 6985 */ 6986 6987 /* One traffic class, spanning over all active ucast queues: */ 6988 netdev_set_num_tc(dev, 1); 6989 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs, 6990 QETH_IQD_MIN_UCAST_TXQ); 6991 6992 /* Map all priorities to this traffic class: */ 6993 for (prio = 0; prio <= TC_BITMASK; prio++) 6994 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST); 6995} 6996 6997int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count) 6998{ 6999 struct net_device *dev = card->dev; 7000 int rc; 7001 7002 /* Per netif_setup_tc(), adjust the mapping first: */ 7003 if (IS_IQD(card)) 7004 qeth_iqd_set_prio_tc_map(dev, count - 1); 7005 7006 rc = netif_set_real_num_tx_queues(dev, count); 7007 7008 if (rc && IS_IQD(card)) 7009 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1); 7010 7011 return rc; 7012} 7013EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues); 7014 7015u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 7016 u8 cast_type, struct net_device *sb_dev) 7017{ 7018 u16 txq; 7019 7020 if (cast_type != RTN_UNICAST) 7021 return QETH_IQD_MCAST_TXQ; 7022 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ) 7023 return QETH_IQD_MIN_UCAST_TXQ; 7024 7025 txq = netdev_pick_tx(dev, skb, sb_dev); 7026 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq; 7027} 7028EXPORT_SYMBOL_GPL(qeth_iqd_select_queue); 7029 7030u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb, 7031 struct net_device *sb_dev) 7032{ 7033 struct qeth_card *card = dev->ml_priv; 7034 7035 if (qeth_uses_tx_prio_queueing(card)) 7036 return qeth_get_priority_queue(card, skb); 7037 7038 return netdev_pick_tx(dev, skb, sb_dev); 7039} 7040EXPORT_SYMBOL_GPL(qeth_osa_select_queue); 7041 7042int qeth_open(struct net_device *dev) 7043{ 7044 struct qeth_card *card = dev->ml_priv; 7045 struct qeth_qdio_out_q *queue; 7046 unsigned int i; 7047 7048 QETH_CARD_TEXT(card, 4, "qethopen"); 7049 7050 card->data.state = CH_STATE_UP; 7051 netif_tx_start_all_queues(dev); 7052 7053 local_bh_disable(); 7054 qeth_for_each_output_queue(card, queue, i) { 7055 netif_napi_add_tx(dev, &queue->napi, qeth_tx_poll); 7056 napi_enable(&queue->napi); 7057 napi_schedule(&queue->napi); 7058 } 7059 7060 napi_enable(&card->napi); 7061 napi_schedule(&card->napi); 7062 /* kick-start the NAPI softirq: */ 7063 local_bh_enable(); 7064 7065 return 0; 7066} 7067EXPORT_SYMBOL_GPL(qeth_open); 7068 7069int qeth_stop(struct net_device *dev) 7070{ 7071 struct qeth_card *card = dev->ml_priv; 7072 struct qeth_qdio_out_q *queue; 7073 unsigned int i; 7074 7075 QETH_CARD_TEXT(card, 4, "qethstop"); 7076 7077 napi_disable(&card->napi); 7078 cancel_delayed_work_sync(&card->buffer_reclaim_work); 7079 qdio_stop_irq(CARD_DDEV(card)); 7080 7081 /* Quiesce the NAPI instances: */ 7082 qeth_for_each_output_queue(card, queue, i) 7083 napi_disable(&queue->napi); 7084 7085 /* Stop .ndo_start_xmit, might still access queue->napi. */ 7086 netif_tx_disable(dev); 7087 7088 qeth_for_each_output_queue(card, queue, i) { 7089 del_timer_sync(&queue->timer); 7090 /* Queues may get re-allocated, so remove the NAPIs. */ 7091 netif_napi_del(&queue->napi); 7092 } 7093 7094 return 0; 7095} 7096EXPORT_SYMBOL_GPL(qeth_stop); 7097 7098static int __init qeth_core_init(void) 7099{ 7100 int rc; 7101 7102 pr_info("loading core functions\n"); 7103 7104 qeth_debugfs_root = debugfs_create_dir("qeth", NULL); 7105 7106 rc = qeth_register_dbf_views(); 7107 if (rc) 7108 goto dbf_err; 7109 qeth_core_root_dev = root_device_register("qeth"); 7110 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 7111 if (rc) 7112 goto register_err; 7113 qeth_core_header_cache = 7114 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE, 7115 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE), 7116 0, NULL); 7117 if (!qeth_core_header_cache) { 7118 rc = -ENOMEM; 7119 goto slab_err; 7120 } 7121 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 7122 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 7123 if (!qeth_qdio_outbuf_cache) { 7124 rc = -ENOMEM; 7125 goto cqslab_err; 7126 } 7127 7128 qeth_qaob_cache = kmem_cache_create("qeth_qaob", 7129 sizeof(struct qaob), 7130 sizeof(struct qaob), 7131 0, NULL); 7132 if (!qeth_qaob_cache) { 7133 rc = -ENOMEM; 7134 goto qaob_err; 7135 } 7136 7137 rc = ccw_driver_register(&qeth_ccw_driver); 7138 if (rc) 7139 goto ccw_err; 7140 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 7141 if (rc) 7142 goto ccwgroup_err; 7143 7144 return 0; 7145 7146ccwgroup_err: 7147 ccw_driver_unregister(&qeth_ccw_driver); 7148ccw_err: 7149 kmem_cache_destroy(qeth_qaob_cache); 7150qaob_err: 7151 kmem_cache_destroy(qeth_qdio_outbuf_cache); 7152cqslab_err: 7153 kmem_cache_destroy(qeth_core_header_cache); 7154slab_err: 7155 root_device_unregister(qeth_core_root_dev); 7156register_err: 7157 qeth_unregister_dbf_views(); 7158dbf_err: 7159 debugfs_remove_recursive(qeth_debugfs_root); 7160 pr_err("Initializing the qeth device driver failed\n"); 7161 return rc; 7162} 7163 7164static void __exit qeth_core_exit(void) 7165{ 7166 qeth_clear_dbf_list(); 7167 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 7168 ccw_driver_unregister(&qeth_ccw_driver); 7169 kmem_cache_destroy(qeth_qaob_cache); 7170 kmem_cache_destroy(qeth_qdio_outbuf_cache); 7171 kmem_cache_destroy(qeth_core_header_cache); 7172 root_device_unregister(qeth_core_root_dev); 7173 qeth_unregister_dbf_views(); 7174 debugfs_remove_recursive(qeth_debugfs_root); 7175 pr_info("core functions removed\n"); 7176} 7177 7178module_init(qeth_core_init); 7179module_exit(qeth_core_exit); 7180MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 7181MODULE_DESCRIPTION("qeth core functions"); 7182MODULE_LICENSE("GPL"); 7183