1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright IBM Corp. 2007 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 #ifndef __QETH_CORE_H__ 11 #define __QETH_CORE_H__ 12 13 #include <linux/completion.h> 14 #include <linux/if.h> 15 #include <linux/if_arp.h> 16 #include <linux/etherdevice.h> 17 #include <linux/if_vlan.h> 18 #include <linux/ctype.h> 19 #include <linux/in6.h> 20 #include <linux/bitops.h> 21 #include <linux/seq_file.h> 22 #include <linux/hashtable.h> 23 #include <linux/ip.h> 24 #include <linux/refcount.h> 25 #include <linux/timer.h> 26 #include <linux/wait.h> 27 #include <linux/workqueue.h> 28 29 #include <net/dst.h> 30 #include <net/ip6_fib.h> 31 #include <net/ipv6.h> 32 #include <net/if_inet6.h> 33 #include <net/addrconf.h> 34 #include <net/sch_generic.h> 35 #include <net/tcp.h> 36 37 #include <asm/debug.h> 38 #include <asm/qdio.h> 39 #include <asm/ccwdev.h> 40 #include <asm/ccwgroup.h> 41 #include <asm/sysinfo.h> 42 43 #include <uapi/linux/if_link.h> 44 45 #include "qeth_core_mpc.h" 46 47 /** 48 * Debug Facility stuff 49 */ 50 enum qeth_dbf_names { 51 QETH_DBF_SETUP, 52 QETH_DBF_MSG, 53 QETH_DBF_CTRL, 54 QETH_DBF_INFOS /* must be last element */ 55 }; 56 57 struct qeth_dbf_info { 58 char name[DEBUG_MAX_NAME_LEN]; 59 int pages; 60 int areas; 61 int len; 62 int level; 63 struct debug_view *view; 64 debug_info_t *id; 65 }; 66 67 #define QETH_DBF_CTRL_LEN 256U 68 69 #define QETH_DBF_TEXT(name, level, text) \ 70 debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text) 71 72 #define QETH_DBF_HEX(name, level, addr, len) \ 73 debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len) 74 75 #define QETH_DBF_MESSAGE(level, text...) \ 76 debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text) 77 78 #define QETH_DBF_TEXT_(name, level, text...) \ 79 qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text) 80 81 #define QETH_CARD_TEXT(card, level, text) \ 82 debug_text_event(card->debug, level, text) 83 84 #define QETH_CARD_HEX(card, level, addr, len) \ 85 debug_event(card->debug, level, (void *)(addr), len) 86 87 #define QETH_CARD_MESSAGE(card, text...) \ 88 debug_sprintf_event(card->debug, level, text) 89 90 #define QETH_CARD_TEXT_(card, level, text...) \ 91 qeth_dbf_longtext(card->debug, level, text) 92 93 #define SENSE_COMMAND_REJECT_BYTE 0 94 #define SENSE_COMMAND_REJECT_FLAG 0x80 95 #define SENSE_RESETTING_EVENT_BYTE 1 96 #define SENSE_RESETTING_EVENT_FLAG 0x80 97 98 static inline u32 qeth_get_device_id(struct ccw_device *cdev) 99 { 100 struct ccw_dev_id dev_id; 101 u32 id; 102 103 ccw_device_get_id(cdev, &dev_id); 104 id = dev_id.devno; 105 id |= (u32) (dev_id.ssid << 16); 106 107 return id; 108 } 109 110 /* 111 * Common IO related definitions 112 */ 113 #define CARD_RDEV(card) card->read.ccwdev 114 #define CARD_WDEV(card) card->write.ccwdev 115 #define CARD_DDEV(card) card->data.ccwdev 116 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev) 117 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev) 118 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev) 119 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev) 120 #define CCW_DEVID(cdev) (qeth_get_device_id(cdev)) 121 #define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card))) 122 123 /* Routing stuff */ 124 struct qeth_routing_info { 125 enum qeth_routing_types type; 126 }; 127 128 /* SETBRIDGEPORT stuff */ 129 enum qeth_sbp_roles { 130 QETH_SBP_ROLE_NONE = 0, 131 QETH_SBP_ROLE_PRIMARY = 1, 132 QETH_SBP_ROLE_SECONDARY = 2, 133 }; 134 135 enum qeth_sbp_states { 136 QETH_SBP_STATE_INACTIVE = 0, 137 QETH_SBP_STATE_STANDBY = 1, 138 QETH_SBP_STATE_ACTIVE = 2, 139 }; 140 141 #define QETH_SBP_HOST_NOTIFICATION 1 142 143 struct qeth_sbp_info { 144 __u32 supported_funcs; 145 enum qeth_sbp_roles role; 146 __u32 hostnotification:1; 147 __u32 reflect_promisc:1; 148 __u32 reflect_promisc_primary:1; 149 }; 150 151 struct qeth_vnicc_info { 152 /* supported/currently configured VNICCs; updated in IPA exchanges */ 153 u32 sup_chars; 154 u32 cur_chars; 155 /* supported commands: bitmasks which VNICCs support respective cmd */ 156 u32 set_char_sup; 157 u32 getset_timeout_sup; 158 /* timeout value for the learning characteristic */ 159 u32 learning_timeout; 160 /* characteristics wanted/configured by user */ 161 u32 wanted_chars; 162 /* has user explicitly enabled rx_bcast while online? */ 163 bool rx_bcast_enabled; 164 }; 165 166 #define QETH_IDX_FUNC_LEVEL_OSD 0x0101 167 #define QETH_IDX_FUNC_LEVEL_IQD 0x4108 168 169 #define QETH_BUFSIZE 4096 170 #define CCW_CMD_WRITE 0x01 171 #define CCW_CMD_READ 0x02 172 173 /** 174 * some more defs 175 */ 176 #define QETH_TX_TIMEOUT 100 * HZ 177 #define QETH_RCD_TIMEOUT 60 * HZ 178 #define QETH_RECLAIM_WORK_TIME HZ 179 #define QETH_MAX_PORTNO 15 180 181 /*IPv6 address autoconfiguration stuff*/ 182 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe 183 #define UNIQUE_ID_NOT_BY_CARD 0x10000 184 185 /*****************************************************************************/ 186 /* QDIO queue and buffer handling */ 187 /*****************************************************************************/ 188 #define QETH_MAX_QUEUES 4 189 #define QETH_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */ 190 #define QETH_IQD_MCAST_TXQ 0 191 #define QETH_IQD_MIN_UCAST_TXQ 1 192 #define QETH_IN_BUF_SIZE_DEFAULT 65536 193 #define QETH_IN_BUF_COUNT_DEFAULT 64 194 #define QETH_IN_BUF_COUNT_HSDEFAULT 128 195 #define QETH_IN_BUF_COUNT_MIN 8 196 #define QETH_IN_BUF_COUNT_MAX 128 197 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12) 198 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \ 199 ((card)->qdio.in_buf_pool.buf_count / 2) 200 201 /* buffers we have to be behind before we get a PCI */ 202 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1) 203 /*enqueued free buffers left before we get a PCI*/ 204 #define QETH_PCI_THRESHOLD_B(card) 0 205 /*not used unless the microcode gets patched*/ 206 #define QETH_PCI_TIMER_VALUE(card) 3 207 208 /* priority queing */ 209 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING 210 #define QETH_DEFAULT_QUEUE 2 211 #define QETH_NO_PRIO_QUEUEING 0 212 #define QETH_PRIO_Q_ING_PREC 1 213 #define QETH_PRIO_Q_ING_TOS 2 214 #define QETH_PRIO_Q_ING_SKB 3 215 #define QETH_PRIO_Q_ING_VLAN 4 216 217 /* Packing */ 218 #define QETH_LOW_WATERMARK_PACK 2 219 #define QETH_HIGH_WATERMARK_PACK 5 220 #define QETH_WATERMARK_PACK_FUZZ 1 221 222 /* large receive scatter gather copy break */ 223 #define QETH_RX_SG_CB (PAGE_SIZE >> 1) 224 225 struct qeth_hdr_layer3 { 226 __u8 id; 227 __u8 flags; 228 __u16 inbound_checksum; /*TSO:__u16 seqno */ 229 __u32 token; /*TSO: __u32 reserved */ 230 __u16 length; 231 __u8 vlan_prio; 232 __u8 ext_flags; 233 __u16 vlan_id; 234 __u16 frame_offset; 235 union { 236 /* TX: */ 237 struct in6_addr ipv6_addr; 238 struct ipv4 { 239 u8 res[12]; 240 u32 addr; 241 } ipv4; 242 /* RX: */ 243 struct rx { 244 u8 res1[2]; 245 u8 src_mac[6]; 246 u8 res2[4]; 247 u16 vlan_id; 248 u8 res3[2]; 249 } rx; 250 } next_hop; 251 }; 252 253 struct qeth_hdr_layer2 { 254 __u8 id; 255 __u8 flags[3]; 256 __u8 port_no; 257 __u8 hdr_length; 258 __u16 pkt_length; 259 __u16 seq_no; 260 __u16 vlan_id; 261 __u32 reserved; 262 __u8 reserved2[16]; 263 } __attribute__ ((packed)); 264 265 struct qeth_hdr_osn { 266 __u8 id; 267 __u8 reserved; 268 __u16 seq_no; 269 __u16 reserved2; 270 __u16 control_flags; 271 __u16 pdu_length; 272 __u8 reserved3[18]; 273 __u32 ccid; 274 } __attribute__ ((packed)); 275 276 struct qeth_hdr { 277 union { 278 struct qeth_hdr_layer2 l2; 279 struct qeth_hdr_layer3 l3; 280 struct qeth_hdr_osn osn; 281 } hdr; 282 } __attribute__ ((packed)); 283 284 /*TCP Segmentation Offload header*/ 285 struct qeth_hdr_ext_tso { 286 __u16 hdr_tot_len; 287 __u8 imb_hdr_no; 288 __u8 reserved; 289 __u8 hdr_type; 290 __u8 hdr_version; 291 __u16 hdr_len; 292 __u32 payload_len; 293 __u16 mss; 294 __u16 dg_hdr_len; 295 __u8 padding[16]; 296 } __attribute__ ((packed)); 297 298 struct qeth_hdr_tso { 299 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/ 300 struct qeth_hdr_ext_tso ext; 301 } __attribute__ ((packed)); 302 303 304 /* flags for qeth_hdr.flags */ 305 #define QETH_HDR_PASSTHRU 0x10 306 #define QETH_HDR_IPV6 0x80 307 #define QETH_HDR_CAST_MASK 0x07 308 enum qeth_cast_flags { 309 QETH_CAST_UNICAST = 0x06, 310 QETH_CAST_MULTICAST = 0x04, 311 QETH_CAST_BROADCAST = 0x05, 312 QETH_CAST_ANYCAST = 0x07, 313 QETH_CAST_NOCAST = 0x00, 314 }; 315 316 enum qeth_layer2_frame_flags { 317 QETH_LAYER2_FLAG_MULTICAST = 0x01, 318 QETH_LAYER2_FLAG_BROADCAST = 0x02, 319 QETH_LAYER2_FLAG_UNICAST = 0x04, 320 QETH_LAYER2_FLAG_VLAN = 0x10, 321 }; 322 323 enum qeth_header_ids { 324 QETH_HEADER_TYPE_LAYER3 = 0x01, 325 QETH_HEADER_TYPE_LAYER2 = 0x02, 326 QETH_HEADER_TYPE_L3_TSO = 0x03, 327 QETH_HEADER_TYPE_OSN = 0x04, 328 QETH_HEADER_TYPE_L2_TSO = 0x06, 329 QETH_HEADER_MASK_INVAL = 0x80, 330 }; 331 /* flags for qeth_hdr.ext_flags */ 332 #define QETH_HDR_EXT_VLAN_FRAME 0x01 333 #define QETH_HDR_EXT_TOKEN_ID 0x02 334 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04 335 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08 336 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10 337 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20 338 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/ 339 340 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1, 341 struct qeth_hdr_layer2 *h2) 342 { 343 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) && 344 h1->vlan_id == h2->vlan_id; 345 } 346 347 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1, 348 struct qeth_hdr_layer3 *h2) 349 { 350 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) && 351 h1->vlan_id == h2->vlan_id; 352 } 353 354 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1, 355 struct qeth_hdr_layer3 *h2) 356 { 357 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) && 358 ipv6_addr_equal(&h1->next_hop.ipv6_addr, 359 &h2->next_hop.ipv6_addr); 360 } 361 362 enum qeth_qdio_info_states { 363 QETH_QDIO_UNINITIALIZED, 364 QETH_QDIO_ALLOCATED, 365 QETH_QDIO_ESTABLISHED, 366 QETH_QDIO_CLEANING 367 }; 368 369 struct qeth_buffer_pool_entry { 370 struct list_head list; 371 struct list_head init_list; 372 void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER]; 373 }; 374 375 struct qeth_qdio_buffer_pool { 376 struct list_head entry_list; 377 int buf_count; 378 }; 379 380 struct qeth_qdio_buffer { 381 struct qdio_buffer *buffer; 382 /* the buffer pool entry currently associated to this buffer */ 383 struct qeth_buffer_pool_entry *pool_entry; 384 struct sk_buff *rx_skb; 385 }; 386 387 struct qeth_qdio_q { 388 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 389 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q]; 390 int next_buf_to_init; 391 }; 392 393 enum qeth_qdio_out_buffer_state { 394 /* Owned by driver, in order to be filled. */ 395 QETH_QDIO_BUF_EMPTY, 396 /* Filled by driver; owned by hardware in order to be sent. */ 397 QETH_QDIO_BUF_PRIMED, 398 /* Identified to be pending in TPQ. */ 399 QETH_QDIO_BUF_PENDING, 400 /* Found in completion queue. */ 401 QETH_QDIO_BUF_IN_CQ, 402 /* Handled via transfer pending / completion queue. */ 403 QETH_QDIO_BUF_HANDLED_DELAYED, 404 }; 405 406 struct qeth_qdio_out_buffer { 407 struct qdio_buffer *buffer; 408 atomic_t state; 409 int next_element_to_fill; 410 unsigned int bytes; 411 struct sk_buff_head skb_list; 412 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER]; 413 414 struct qeth_qdio_out_q *q; 415 struct qeth_qdio_out_buffer *next_pending; 416 }; 417 418 struct qeth_card; 419 420 enum qeth_out_q_states { 421 QETH_OUT_Q_UNLOCKED, 422 QETH_OUT_Q_LOCKED, 423 QETH_OUT_Q_LOCKED_FLUSH, 424 }; 425 426 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val)) 427 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1) 428 429 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val)) 430 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1) 431 432 struct qeth_card_stats { 433 u64 rx_bufs; 434 u64 rx_skb_csum; 435 u64 rx_sg_skbs; 436 u64 rx_sg_frags; 437 u64 rx_sg_alloc_page; 438 439 u64 rx_dropped_nomem; 440 u64 rx_dropped_notsupp; 441 u64 rx_dropped_runt; 442 443 /* rtnl_link_stats64 */ 444 u64 rx_packets; 445 u64 rx_bytes; 446 u64 rx_multicast; 447 u64 rx_length_errors; 448 u64 rx_frame_errors; 449 u64 rx_fifo_errors; 450 }; 451 452 struct qeth_out_q_stats { 453 u64 bufs; 454 u64 bufs_pack; 455 u64 buf_elements; 456 u64 skbs_pack; 457 u64 skbs_sg; 458 u64 skbs_csum; 459 u64 skbs_tso; 460 u64 skbs_linearized; 461 u64 skbs_linearized_fail; 462 u64 tso_bytes; 463 u64 packing_mode_switch; 464 u64 stopped; 465 u64 completion_yield; 466 u64 completion_timer; 467 468 /* rtnl_link_stats64 */ 469 u64 tx_packets; 470 u64 tx_bytes; 471 u64 tx_errors; 472 u64 tx_dropped; 473 }; 474 475 #define QETH_TX_TIMER_USECS 500 476 477 struct qeth_qdio_out_q { 478 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 479 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q]; 480 struct qdio_outbuf_state *bufstates; /* convenience pointer */ 481 struct qeth_out_q_stats stats; 482 u8 next_buf_to_fill; 483 u8 max_elements; 484 u8 queue_no; 485 u8 do_pack; 486 struct qeth_card *card; 487 atomic_t state; 488 /* 489 * number of buffers that are currently filled (PRIMED) 490 * -> these buffers are hardware-owned 491 */ 492 atomic_t used_buffers; 493 /* indicates whether PCI flag must be set (or if one is outstanding) */ 494 atomic_t set_pci_flags_count; 495 struct napi_struct napi; 496 struct timer_list timer; 497 struct qeth_hdr *prev_hdr; 498 u8 bulk_start; 499 u8 bulk_count; 500 u8 bulk_max; 501 }; 502 503 #define qeth_for_each_output_queue(card, q, i) \ 504 for (i = 0; i < card->qdio.no_out_queues && \ 505 (q = card->qdio.out_qs[i]); i++) 506 507 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi) 508 509 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue) 510 { 511 if (timer_pending(&queue->timer)) 512 return; 513 mod_timer(&queue->timer, usecs_to_jiffies(QETH_TX_TIMER_USECS) + 514 jiffies); 515 } 516 517 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue) 518 { 519 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q; 520 } 521 522 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue) 523 { 524 return atomic_read(&queue->used_buffers) == 0; 525 } 526 527 struct qeth_qdio_info { 528 atomic_t state; 529 /* input */ 530 int no_in_queues; 531 struct qeth_qdio_q *in_q; 532 struct qeth_qdio_q *c_q; 533 struct qeth_qdio_buffer_pool in_buf_pool; 534 struct qeth_qdio_buffer_pool init_pool; 535 int in_buf_size; 536 537 /* output */ 538 int no_out_queues; 539 struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES]; 540 struct qdio_outbuf_state *out_bufstates; 541 542 /* priority queueing */ 543 int do_prio_queueing; 544 int default_out_queue; 545 }; 546 547 /** 548 * channel state machine 549 */ 550 enum qeth_channel_states { 551 CH_STATE_UP, 552 CH_STATE_DOWN, 553 CH_STATE_HALTED, 554 CH_STATE_STOPPED, 555 }; 556 /** 557 * card state machine 558 */ 559 enum qeth_card_states { 560 CARD_STATE_DOWN, 561 CARD_STATE_SOFTSETUP, 562 }; 563 564 /** 565 * Protocol versions 566 */ 567 enum qeth_prot_versions { 568 QETH_PROT_NONE = 0x0000, 569 QETH_PROT_IPV4 = 0x0004, 570 QETH_PROT_IPV6 = 0x0006, 571 }; 572 573 enum qeth_cq { 574 QETH_CQ_DISABLED = 0, 575 QETH_CQ_ENABLED = 1, 576 QETH_CQ_NOTAVAILABLE = 2, 577 }; 578 579 struct qeth_ipato { 580 bool enabled; 581 bool invert4; 582 bool invert6; 583 struct list_head entries; 584 }; 585 586 struct qeth_channel { 587 struct ccw_device *ccwdev; 588 struct qeth_cmd_buffer *active_cmd; 589 enum qeth_channel_states state; 590 atomic_t irq_pending; 591 }; 592 593 struct qeth_reply { 594 int (*callback)(struct qeth_card *card, struct qeth_reply *reply, 595 unsigned long data); 596 void *param; 597 }; 598 599 struct qeth_cmd_buffer { 600 struct list_head list; 601 struct completion done; 602 spinlock_t lock; 603 unsigned int length; 604 refcount_t ref_count; 605 struct qeth_channel *channel; 606 struct qeth_reply reply; 607 long timeout; 608 unsigned char *data; 609 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob); 610 bool (*match)(struct qeth_cmd_buffer *iob, 611 struct qeth_cmd_buffer *reply); 612 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob, 613 unsigned int data_length); 614 int rc; 615 }; 616 617 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob) 618 { 619 refcount_inc(&iob->ref_count); 620 } 621 622 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob) 623 { 624 if (!IS_IPA(iob->data)) 625 return NULL; 626 627 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 628 } 629 630 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob) 631 { 632 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 633 } 634 635 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob) 636 { 637 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8)); 638 } 639 640 static inline bool qeth_trylock_channel(struct qeth_channel *channel) 641 { 642 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0; 643 } 644 645 /** 646 * OSA card related definitions 647 */ 648 struct qeth_token { 649 __u32 issuer_rm_w; 650 __u32 issuer_rm_r; 651 __u32 cm_filter_w; 652 __u32 cm_filter_r; 653 __u32 cm_connection_w; 654 __u32 cm_connection_r; 655 __u32 ulp_filter_w; 656 __u32 ulp_filter_r; 657 __u32 ulp_connection_w; 658 __u32 ulp_connection_r; 659 }; 660 661 struct qeth_seqno { 662 __u32 trans_hdr; 663 __u32 pdu_hdr; 664 __u32 pdu_hdr_ack; 665 __u16 ipa; 666 }; 667 668 struct qeth_card_blkt { 669 int time_total; 670 int inter_packet; 671 int inter_packet_jumbo; 672 }; 673 674 #define QETH_BROADCAST_WITH_ECHO 0x01 675 #define QETH_BROADCAST_WITHOUT_ECHO 0x02 676 #define QETH_LAYER2_MAC_REGISTERED 0x02 677 struct qeth_card_info { 678 unsigned short unit_addr2; 679 unsigned short cula; 680 u8 chpid; 681 __u16 func_level; 682 char mcl_level[QETH_MCL_LENGTH + 1]; 683 u8 open_when_online:1; 684 u8 promisc_mode:1; 685 u8 use_v1_blkt:1; 686 u8 is_vm_nic:1; 687 int mac_bits; 688 enum qeth_card_types type; 689 enum qeth_link_types link_type; 690 int broadcast_capable; 691 int unique_id; 692 bool layer_enforced; 693 struct qeth_card_blkt blkt; 694 __u32 diagass_support; 695 __u32 hwtrap; 696 }; 697 698 enum qeth_discipline_id { 699 QETH_DISCIPLINE_UNDETERMINED = -1, 700 QETH_DISCIPLINE_LAYER3 = 0, 701 QETH_DISCIPLINE_LAYER2 = 1, 702 }; 703 704 struct qeth_card_options { 705 struct qeth_ipa_caps ipa4; 706 struct qeth_ipa_caps ipa6; 707 struct qeth_routing_info route4; 708 struct qeth_routing_info route6; 709 struct qeth_ipa_caps adp; /* Adapter parameters */ 710 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */ 711 struct qeth_vnicc_info vnicc; /* VNICC options */ 712 int fake_broadcast; 713 enum qeth_discipline_id layer; 714 int rx_sg_cb; 715 enum qeth_ipa_isolation_modes isolation; 716 enum qeth_ipa_isolation_modes prev_isolation; 717 int sniffer; 718 enum qeth_cq cq; 719 char hsuid[9]; 720 }; 721 722 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2) 723 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3) 724 725 /* 726 * thread bits for qeth_card thread masks 727 */ 728 enum qeth_threads { 729 QETH_RECOVER_THREAD = 1, 730 }; 731 732 struct qeth_osn_info { 733 int (*assist_cb)(struct net_device *dev, void *data); 734 int (*data_cb)(struct sk_buff *skb); 735 }; 736 737 struct qeth_discipline { 738 const struct device_type *devtype; 739 int (*setup) (struct ccwgroup_device *); 740 void (*remove) (struct ccwgroup_device *); 741 int (*set_online)(struct qeth_card *card); 742 void (*set_offline)(struct qeth_card *card); 743 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd); 744 int (*control_event_handler)(struct qeth_card *card, 745 struct qeth_ipa_cmd *cmd); 746 }; 747 748 enum qeth_addr_disposition { 749 QETH_DISP_ADDR_DELETE = 0, 750 QETH_DISP_ADDR_DO_NOTHING = 1, 751 QETH_DISP_ADDR_ADD = 2, 752 }; 753 754 struct qeth_rx { 755 int b_count; 756 int b_index; 757 struct qdio_buffer_element *b_element; 758 int e_offset; 759 int qdio_err; 760 }; 761 762 struct carrier_info { 763 __u8 card_type; 764 __u16 port_mode; 765 __u32 port_speed; 766 }; 767 768 struct qeth_switch_info { 769 __u32 capabilities; 770 __u32 settings; 771 }; 772 773 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT 774 775 struct qeth_card { 776 enum qeth_card_states state; 777 spinlock_t lock; 778 struct ccwgroup_device *gdev; 779 struct qeth_cmd_buffer *read_cmd; 780 struct qeth_channel read; 781 struct qeth_channel write; 782 struct qeth_channel data; 783 784 struct net_device *dev; 785 struct qeth_card_stats stats; 786 struct qeth_card_info info; 787 struct qeth_token token; 788 struct qeth_seqno seqno; 789 struct qeth_card_options options; 790 791 struct workqueue_struct *event_wq; 792 struct workqueue_struct *cmd_wq; 793 wait_queue_head_t wait_q; 794 DECLARE_HASHTABLE(mac_htable, 4); 795 DECLARE_HASHTABLE(ip_htable, 4); 796 struct mutex ip_lock; 797 DECLARE_HASHTABLE(ip_mc_htable, 4); 798 struct work_struct rx_mode_work; 799 struct work_struct kernel_thread_starter; 800 spinlock_t thread_mask_lock; 801 unsigned long thread_start_mask; 802 unsigned long thread_allowed_mask; 803 unsigned long thread_running_mask; 804 struct qeth_ipato ipato; 805 struct list_head cmd_waiter_list; 806 /* QDIO buffer handling */ 807 struct qeth_qdio_info qdio; 808 int read_or_write_problem; 809 struct qeth_osn_info osn_info; 810 struct qeth_discipline *discipline; 811 atomic_t force_alloc_skb; 812 struct service_level qeth_service_level; 813 struct qdio_ssqd_desc ssqd; 814 debug_info_t *debug; 815 struct mutex sbp_lock; 816 struct mutex conf_mutex; 817 struct mutex discipline_mutex; 818 struct napi_struct napi; 819 struct qeth_rx rx; 820 struct delayed_work buffer_reclaim_work; 821 int reclaim_index; 822 struct work_struct close_dev_work; 823 }; 824 825 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card) 826 { 827 return card->state == CARD_STATE_SOFTSETUP; 828 } 829 830 static inline void qeth_unlock_channel(struct qeth_card *card, 831 struct qeth_channel *channel) 832 { 833 atomic_set(&channel->irq_pending, 0); 834 wake_up(&card->wait_q); 835 } 836 837 struct qeth_trap_id { 838 __u16 lparnr; 839 char vmname[8]; 840 __u8 chpid; 841 __u8 ssid; 842 __u16 devno; 843 } __packed; 844 845 /*some helper functions*/ 846 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "") 847 848 static inline bool qeth_netdev_is_registered(struct net_device *dev) 849 { 850 return dev->netdev_ops != NULL; 851 } 852 853 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq) 854 { 855 if (txq == QETH_IQD_MCAST_TXQ) 856 return dev->num_tx_queues - 1; 857 if (txq == dev->num_tx_queues - 1) 858 return QETH_IQD_MCAST_TXQ; 859 return txq; 860 } 861 862 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card, 863 struct qeth_qdio_out_q *queue) 864 { 865 return qeth_iqd_translate_txq(card->dev, queue->queue_no) == 866 QETH_IQD_MCAST_TXQ; 867 } 868 869 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf, 870 unsigned int elements) 871 { 872 unsigned int i; 873 874 for (i = 0; i < elements; i++) 875 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element)); 876 buf->element[14].sflags = 0; 877 buf->element[15].sflags = 0; 878 } 879 880 /** 881 * qeth_get_elements_for_range() - find number of SBALEs to cover range. 882 * @start: Start of the address range. 883 * @end: Address after the end of the range. 884 * 885 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 886 * the specified address range. 887 */ 888 static inline int qeth_get_elements_for_range(addr_t start, addr_t end) 889 { 890 return PFN_UP(end) - PFN_DOWN(start); 891 } 892 893 static inline int qeth_get_ip_version(struct sk_buff *skb) 894 { 895 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 896 __be16 prot = veth->h_vlan_proto; 897 898 if (prot == htons(ETH_P_8021Q)) 899 prot = veth->h_vlan_encapsulated_proto; 900 901 switch (prot) { 902 case htons(ETH_P_IPV6): 903 return 6; 904 case htons(ETH_P_IP): 905 return 4; 906 default: 907 return 0; 908 } 909 } 910 911 static inline int qeth_get_ether_cast_type(struct sk_buff *skb) 912 { 913 u8 *addr = eth_hdr(skb)->h_dest; 914 915 if (is_multicast_ether_addr(addr)) 916 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST : 917 RTN_MULTICAST; 918 return RTN_UNICAST; 919 } 920 921 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv) 922 { 923 struct dst_entry *dst = skb_dst(skb); 924 struct rt6_info *rt; 925 926 rt = (struct rt6_info *) dst; 927 if (dst) 928 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0); 929 return dst; 930 } 931 932 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv) 933 { 934 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; 935 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) || 936 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) 937 *flags |= QETH_HDR_EXT_UDP; 938 } 939 940 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, 941 struct qeth_buffer_pool_entry *entry) 942 { 943 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list); 944 } 945 946 static inline int qeth_is_diagass_supported(struct qeth_card *card, 947 enum qeth_diags_cmds cmd) 948 { 949 return card->info.diagass_support & (__u32)cmd; 950 } 951 952 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 953 enum qeth_ipa_funcs ipa_func, 954 u16 cmd_code, u32 *data, 955 enum qeth_prot_versions prot); 956 /* IPv4 variant */ 957 static inline int qeth_send_simple_setassparms(struct qeth_card *card, 958 enum qeth_ipa_funcs ipa_func, 959 u16 cmd_code, u32 *data) 960 { 961 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 962 data, QETH_PROT_IPV4); 963 } 964 965 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card, 966 enum qeth_ipa_funcs ipa_func, 967 u16 cmd_code, u32 *data) 968 { 969 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 970 data, QETH_PROT_IPV6); 971 } 972 973 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb); 974 975 extern struct qeth_discipline qeth_l2_discipline; 976 extern struct qeth_discipline qeth_l3_discipline; 977 extern const struct ethtool_ops qeth_ethtool_ops; 978 extern const struct ethtool_ops qeth_osn_ethtool_ops; 979 extern const struct attribute_group *qeth_generic_attr_groups[]; 980 extern const struct attribute_group *qeth_osn_attr_groups[]; 981 extern const struct attribute_group qeth_device_attr_group; 982 extern const struct attribute_group qeth_device_blkt_group; 983 extern const struct device_type qeth_generic_devtype; 984 985 const char *qeth_get_cardname_short(struct qeth_card *); 986 int qeth_realloc_buffer_pool(struct qeth_card *, int); 987 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id); 988 void qeth_core_free_discipline(struct qeth_card *); 989 990 /* exports for qeth discipline device drivers */ 991 extern struct kmem_cache *qeth_core_header_cache; 992 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; 993 994 struct net_device *qeth_clone_netdev(struct net_device *orig); 995 struct qeth_card *qeth_get_card_by_busid(char *bus_id); 996 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int); 997 int qeth_threads_running(struct qeth_card *, unsigned long); 998 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok); 999 int qeth_stop_channel(struct qeth_channel *channel); 1000 int qeth_set_offline(struct qeth_card *card, bool resetting); 1001 1002 void qeth_print_status_message(struct qeth_card *); 1003 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, 1004 int (*reply_cb) 1005 (struct qeth_card *, struct qeth_reply *, unsigned long), 1006 void *); 1007 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 1008 enum qeth_ipa_cmds cmd_code, 1009 enum qeth_prot_versions prot, 1010 unsigned int data_length); 1011 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 1012 unsigned int length, unsigned int ccws, 1013 long timeout); 1014 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 1015 enum qeth_ipa_funcs ipa_func, 1016 u16 cmd_code, 1017 unsigned int data_length, 1018 enum qeth_prot_versions prot); 1019 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 1020 enum qeth_diags_cmds sub_cmd, 1021 unsigned int data_length); 1022 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason); 1023 void qeth_put_cmd(struct qeth_cmd_buffer *iob); 1024 1025 void qeth_schedule_recovery(struct qeth_card *); 1026 int qeth_poll(struct napi_struct *napi, int budget); 1027 void qeth_clear_ipacmd_list(struct qeth_card *); 1028 int qeth_qdio_clear_card(struct qeth_card *, int); 1029 void qeth_clear_working_pool_list(struct qeth_card *); 1030 void qeth_drain_output_queues(struct qeth_card *card); 1031 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable); 1032 int qeth_setadpparms_change_macaddr(struct qeth_card *); 1033 void qeth_tx_timeout(struct net_device *, unsigned int txqueue); 1034 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 1035 u16 cmd_length, 1036 bool (*match)(struct qeth_cmd_buffer *iob, 1037 struct qeth_cmd_buffer *reply)); 1038 int qeth_query_switch_attributes(struct qeth_card *card, 1039 struct qeth_switch_info *sw_info); 1040 int qeth_query_card_info(struct qeth_card *card, 1041 struct carrier_info *carrier_info); 1042 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset); 1043 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 1044 struct sk_buff *skb, struct qeth_hdr *hdr, 1045 unsigned int offset, unsigned int hd_len, 1046 int elements_needed); 1047 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1048 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); 1049 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback); 1050 int qeth_configure_cq(struct qeth_card *, enum qeth_cq); 1051 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action); 1052 void qeth_trace_features(struct qeth_card *); 1053 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long); 1054 int qeth_set_features(struct net_device *, netdev_features_t); 1055 void qeth_enable_hw_features(struct net_device *dev); 1056 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t); 1057 netdev_features_t qeth_features_check(struct sk_buff *skb, 1058 struct net_device *dev, 1059 netdev_features_t features); 1060 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats); 1061 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1062 u8 cast_type, struct net_device *sb_dev); 1063 int qeth_open(struct net_device *dev); 1064 int qeth_stop(struct net_device *dev); 1065 1066 int qeth_vm_request_mac(struct qeth_card *card); 1067 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 1068 struct qeth_qdio_out_q *queue, int ipv, 1069 void (*fill_header)(struct qeth_qdio_out_q *queue, 1070 struct qeth_hdr *hdr, struct sk_buff *skb, 1071 int ipv, unsigned int data_len)); 1072 1073 /* exports for OSN */ 1074 int qeth_osn_assist(struct net_device *, void *, int); 1075 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **, 1076 int (*assist_cb)(struct net_device *, void *), 1077 int (*data_cb)(struct sk_buff *)); 1078 void qeth_osn_deregister(struct net_device *); 1079 1080 #endif /* __QETH_CORE_H__ */ 1081