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/wait.h> 26 #include <linux/workqueue.h> 27 28 #include <net/ipv6.h> 29 #include <net/if_inet6.h> 30 #include <net/addrconf.h> 31 #include <net/tcp.h> 32 33 #include <asm/debug.h> 34 #include <asm/qdio.h> 35 #include <asm/ccwdev.h> 36 #include <asm/ccwgroup.h> 37 #include <asm/sysinfo.h> 38 39 #include <uapi/linux/if_link.h> 40 41 #include "qeth_core_mpc.h" 42 43 /** 44 * Debug Facility stuff 45 */ 46 enum qeth_dbf_names { 47 QETH_DBF_SETUP, 48 QETH_DBF_MSG, 49 QETH_DBF_CTRL, 50 QETH_DBF_INFOS /* must be last element */ 51 }; 52 53 struct qeth_dbf_info { 54 char name[DEBUG_MAX_NAME_LEN]; 55 int pages; 56 int areas; 57 int len; 58 int level; 59 struct debug_view *view; 60 debug_info_t *id; 61 }; 62 63 #define QETH_DBF_CTRL_LEN 256 64 65 #define QETH_DBF_TEXT(name, level, text) \ 66 debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text) 67 68 #define QETH_DBF_HEX(name, level, addr, len) \ 69 debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len) 70 71 #define QETH_DBF_MESSAGE(level, text...) \ 72 debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text) 73 74 #define QETH_DBF_TEXT_(name, level, text...) \ 75 qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text) 76 77 #define QETH_CARD_TEXT(card, level, text) \ 78 debug_text_event(card->debug, level, text) 79 80 #define QETH_CARD_HEX(card, level, addr, len) \ 81 debug_event(card->debug, level, (void *)(addr), len) 82 83 #define QETH_CARD_MESSAGE(card, text...) \ 84 debug_sprintf_event(card->debug, level, text) 85 86 #define QETH_CARD_TEXT_(card, level, text...) \ 87 qeth_dbf_longtext(card->debug, level, text) 88 89 #define SENSE_COMMAND_REJECT_BYTE 0 90 #define SENSE_COMMAND_REJECT_FLAG 0x80 91 #define SENSE_RESETTING_EVENT_BYTE 1 92 #define SENSE_RESETTING_EVENT_FLAG 0x80 93 94 static inline u32 qeth_get_device_id(struct ccw_device *cdev) 95 { 96 struct ccw_dev_id dev_id; 97 u32 id; 98 99 ccw_device_get_id(cdev, &dev_id); 100 id = dev_id.devno; 101 id |= (u32) (dev_id.ssid << 16); 102 103 return id; 104 } 105 106 /* 107 * Common IO related definitions 108 */ 109 #define CARD_RDEV(card) card->read.ccwdev 110 #define CARD_WDEV(card) card->write.ccwdev 111 #define CARD_DDEV(card) card->data.ccwdev 112 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev) 113 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev) 114 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev) 115 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev) 116 #define CCW_DEVID(cdev) (qeth_get_device_id(cdev)) 117 #define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card))) 118 119 /* Routing stuff */ 120 struct qeth_routing_info { 121 enum qeth_routing_types type; 122 }; 123 124 /* IPA stuff */ 125 struct qeth_ipa_info { 126 __u32 supported_funcs; 127 __u32 enabled_funcs; 128 }; 129 130 /* SETBRIDGEPORT stuff */ 131 enum qeth_sbp_roles { 132 QETH_SBP_ROLE_NONE = 0, 133 QETH_SBP_ROLE_PRIMARY = 1, 134 QETH_SBP_ROLE_SECONDARY = 2, 135 }; 136 137 enum qeth_sbp_states { 138 QETH_SBP_STATE_INACTIVE = 0, 139 QETH_SBP_STATE_STANDBY = 1, 140 QETH_SBP_STATE_ACTIVE = 2, 141 }; 142 143 #define QETH_SBP_HOST_NOTIFICATION 1 144 145 struct qeth_sbp_info { 146 __u32 supported_funcs; 147 enum qeth_sbp_roles role; 148 __u32 hostnotification:1; 149 __u32 reflect_promisc:1; 150 __u32 reflect_promisc_primary:1; 151 }; 152 153 struct qeth_vnicc_info { 154 /* supported/currently configured VNICCs; updated in IPA exchanges */ 155 u32 sup_chars; 156 u32 cur_chars; 157 /* supported commands: bitmasks which VNICCs support respective cmd */ 158 u32 set_char_sup; 159 u32 getset_timeout_sup; 160 /* timeout value for the learning characteristic */ 161 u32 learning_timeout; 162 /* characteristics wanted/configured by user */ 163 u32 wanted_chars; 164 /* has user explicitly enabled rx_bcast while online? */ 165 bool rx_bcast_enabled; 166 }; 167 168 static inline int qeth_is_adp_supported(struct qeth_ipa_info *ipa, 169 enum qeth_ipa_setadp_cmd func) 170 { 171 return (ipa->supported_funcs & func); 172 } 173 174 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa, 175 enum qeth_ipa_funcs func) 176 { 177 return (ipa->supported_funcs & func); 178 } 179 180 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, 181 enum qeth_ipa_funcs func) 182 { 183 return (ipa->supported_funcs & ipa->enabled_funcs & func); 184 } 185 186 #define qeth_adp_supported(c, f) \ 187 qeth_is_adp_supported(&c->options.adp, f) 188 #define qeth_is_supported(c, f) \ 189 qeth_is_ipa_supported(&c->options.ipa4, f) 190 #define qeth_is_enabled(c, f) \ 191 qeth_is_ipa_enabled(&c->options.ipa4, f) 192 #define qeth_is_supported6(c, f) \ 193 qeth_is_ipa_supported(&c->options.ipa6, f) 194 #define qeth_is_enabled6(c, f) \ 195 qeth_is_ipa_enabled(&c->options.ipa6, f) 196 #define qeth_is_ipafunc_supported(c, prot, f) \ 197 ((prot == QETH_PROT_IPV6) ? \ 198 qeth_is_supported6(c, f) : qeth_is_supported(c, f)) 199 #define qeth_is_ipafunc_enabled(c, prot, f) \ 200 ((prot == QETH_PROT_IPV6) ? \ 201 qeth_is_enabled6(c, f) : qeth_is_enabled(c, f)) 202 203 #define QETH_IDX_FUNC_LEVEL_OSD 0x0101 204 #define QETH_IDX_FUNC_LEVEL_IQD 0x4108 205 206 #define QETH_BUFSIZE 4096 207 #define CCW_CMD_WRITE 0x01 208 #define CCW_CMD_READ 0x02 209 210 /** 211 * some more defs 212 */ 213 #define QETH_TX_TIMEOUT 100 * HZ 214 #define QETH_RCD_TIMEOUT 60 * HZ 215 #define QETH_RECLAIM_WORK_TIME HZ 216 #define QETH_MAX_PORTNO 15 217 218 /*IPv6 address autoconfiguration stuff*/ 219 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe 220 #define UNIQUE_ID_NOT_BY_CARD 0x10000 221 222 /*****************************************************************************/ 223 /* QDIO queue and buffer handling */ 224 /*****************************************************************************/ 225 #define QETH_MAX_QUEUES 4 226 #define QETH_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */ 227 #define QETH_IQD_MCAST_TXQ 0 228 #define QETH_IQD_MIN_UCAST_TXQ 1 229 #define QETH_IN_BUF_SIZE_DEFAULT 65536 230 #define QETH_IN_BUF_COUNT_DEFAULT 64 231 #define QETH_IN_BUF_COUNT_HSDEFAULT 128 232 #define QETH_IN_BUF_COUNT_MIN 8 233 #define QETH_IN_BUF_COUNT_MAX 128 234 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12) 235 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \ 236 ((card)->qdio.in_buf_pool.buf_count / 2) 237 238 /* buffers we have to be behind before we get a PCI */ 239 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1) 240 /*enqueued free buffers left before we get a PCI*/ 241 #define QETH_PCI_THRESHOLD_B(card) 0 242 /*not used unless the microcode gets patched*/ 243 #define QETH_PCI_TIMER_VALUE(card) 3 244 245 /* priority queing */ 246 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING 247 #define QETH_DEFAULT_QUEUE 2 248 #define QETH_NO_PRIO_QUEUEING 0 249 #define QETH_PRIO_Q_ING_PREC 1 250 #define QETH_PRIO_Q_ING_TOS 2 251 #define QETH_PRIO_Q_ING_SKB 3 252 #define QETH_PRIO_Q_ING_VLAN 4 253 254 /* Packing */ 255 #define QETH_LOW_WATERMARK_PACK 2 256 #define QETH_HIGH_WATERMARK_PACK 5 257 #define QETH_WATERMARK_PACK_FUZZ 1 258 259 /* large receive scatter gather copy break */ 260 #define QETH_RX_SG_CB (PAGE_SIZE >> 1) 261 #define QETH_RX_PULL_LEN 256 262 263 struct qeth_hdr_layer3 { 264 __u8 id; 265 __u8 flags; 266 __u16 inbound_checksum; /*TSO:__u16 seqno */ 267 __u32 token; /*TSO: __u32 reserved */ 268 __u16 length; 269 __u8 vlan_prio; 270 __u8 ext_flags; 271 __u16 vlan_id; 272 __u16 frame_offset; 273 union { 274 /* TX: */ 275 struct in6_addr ipv6_addr; 276 struct ipv4 { 277 u8 res[12]; 278 u32 addr; 279 } ipv4; 280 /* RX: */ 281 struct rx { 282 u8 res1[2]; 283 u8 src_mac[6]; 284 u8 res2[4]; 285 u16 vlan_id; 286 u8 res3[2]; 287 } rx; 288 } next_hop; 289 }; 290 291 struct qeth_hdr_layer2 { 292 __u8 id; 293 __u8 flags[3]; 294 __u8 port_no; 295 __u8 hdr_length; 296 __u16 pkt_length; 297 __u16 seq_no; 298 __u16 vlan_id; 299 __u32 reserved; 300 __u8 reserved2[16]; 301 } __attribute__ ((packed)); 302 303 struct qeth_hdr_osn { 304 __u8 id; 305 __u8 reserved; 306 __u16 seq_no; 307 __u16 reserved2; 308 __u16 control_flags; 309 __u16 pdu_length; 310 __u8 reserved3[18]; 311 __u32 ccid; 312 } __attribute__ ((packed)); 313 314 struct qeth_hdr { 315 union { 316 struct qeth_hdr_layer2 l2; 317 struct qeth_hdr_layer3 l3; 318 struct qeth_hdr_osn osn; 319 } hdr; 320 } __attribute__ ((packed)); 321 322 /*TCP Segmentation Offload header*/ 323 struct qeth_hdr_ext_tso { 324 __u16 hdr_tot_len; 325 __u8 imb_hdr_no; 326 __u8 reserved; 327 __u8 hdr_type; 328 __u8 hdr_version; 329 __u16 hdr_len; 330 __u32 payload_len; 331 __u16 mss; 332 __u16 dg_hdr_len; 333 __u8 padding[16]; 334 } __attribute__ ((packed)); 335 336 struct qeth_hdr_tso { 337 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/ 338 struct qeth_hdr_ext_tso ext; 339 } __attribute__ ((packed)); 340 341 342 /* flags for qeth_hdr.flags */ 343 #define QETH_HDR_PASSTHRU 0x10 344 #define QETH_HDR_IPV6 0x80 345 #define QETH_HDR_CAST_MASK 0x07 346 enum qeth_cast_flags { 347 QETH_CAST_UNICAST = 0x06, 348 QETH_CAST_MULTICAST = 0x04, 349 QETH_CAST_BROADCAST = 0x05, 350 QETH_CAST_ANYCAST = 0x07, 351 QETH_CAST_NOCAST = 0x00, 352 }; 353 354 enum qeth_layer2_frame_flags { 355 QETH_LAYER2_FLAG_MULTICAST = 0x01, 356 QETH_LAYER2_FLAG_BROADCAST = 0x02, 357 QETH_LAYER2_FLAG_UNICAST = 0x04, 358 QETH_LAYER2_FLAG_VLAN = 0x10, 359 }; 360 361 enum qeth_header_ids { 362 QETH_HEADER_TYPE_LAYER3 = 0x01, 363 QETH_HEADER_TYPE_LAYER2 = 0x02, 364 QETH_HEADER_TYPE_L3_TSO = 0x03, 365 QETH_HEADER_TYPE_OSN = 0x04, 366 QETH_HEADER_TYPE_L2_TSO = 0x06, 367 }; 368 /* flags for qeth_hdr.ext_flags */ 369 #define QETH_HDR_EXT_VLAN_FRAME 0x01 370 #define QETH_HDR_EXT_TOKEN_ID 0x02 371 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04 372 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08 373 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10 374 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20 375 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/ 376 377 enum qeth_qdio_info_states { 378 QETH_QDIO_UNINITIALIZED, 379 QETH_QDIO_ALLOCATED, 380 QETH_QDIO_ESTABLISHED, 381 QETH_QDIO_CLEANING 382 }; 383 384 struct qeth_buffer_pool_entry { 385 struct list_head list; 386 struct list_head init_list; 387 void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER]; 388 }; 389 390 struct qeth_qdio_buffer_pool { 391 struct list_head entry_list; 392 int buf_count; 393 }; 394 395 struct qeth_qdio_buffer { 396 struct qdio_buffer *buffer; 397 /* the buffer pool entry currently associated to this buffer */ 398 struct qeth_buffer_pool_entry *pool_entry; 399 struct sk_buff *rx_skb; 400 }; 401 402 struct qeth_qdio_q { 403 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 404 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q]; 405 int next_buf_to_init; 406 }; 407 408 enum qeth_qdio_out_buffer_state { 409 /* Owned by driver, in order to be filled. */ 410 QETH_QDIO_BUF_EMPTY, 411 /* Filled by driver; owned by hardware in order to be sent. */ 412 QETH_QDIO_BUF_PRIMED, 413 /* Identified to be pending in TPQ. */ 414 QETH_QDIO_BUF_PENDING, 415 /* Found in completion queue. */ 416 QETH_QDIO_BUF_IN_CQ, 417 /* Handled via transfer pending / completion queue. */ 418 QETH_QDIO_BUF_HANDLED_DELAYED, 419 }; 420 421 struct qeth_qdio_out_buffer { 422 struct qdio_buffer *buffer; 423 atomic_t state; 424 int next_element_to_fill; 425 struct sk_buff_head skb_list; 426 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER]; 427 428 struct qeth_qdio_out_q *q; 429 struct qeth_qdio_out_buffer *next_pending; 430 }; 431 432 struct qeth_card; 433 434 enum qeth_out_q_states { 435 QETH_OUT_Q_UNLOCKED, 436 QETH_OUT_Q_LOCKED, 437 QETH_OUT_Q_LOCKED_FLUSH, 438 }; 439 440 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val)) 441 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1) 442 443 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val)) 444 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1) 445 446 struct qeth_card_stats { 447 u64 rx_bufs; 448 u64 rx_skb_csum; 449 u64 rx_sg_skbs; 450 u64 rx_sg_frags; 451 u64 rx_sg_alloc_page; 452 453 /* rtnl_link_stats64 */ 454 u64 rx_packets; 455 u64 rx_bytes; 456 u64 rx_errors; 457 u64 rx_dropped; 458 u64 rx_multicast; 459 }; 460 461 struct qeth_out_q_stats { 462 u64 bufs; 463 u64 bufs_pack; 464 u64 buf_elements; 465 u64 skbs_pack; 466 u64 skbs_sg; 467 u64 skbs_csum; 468 u64 skbs_tso; 469 u64 skbs_linearized; 470 u64 skbs_linearized_fail; 471 u64 tso_bytes; 472 u64 packing_mode_switch; 473 u64 stopped; 474 475 /* rtnl_link_stats64 */ 476 u64 tx_packets; 477 u64 tx_bytes; 478 u64 tx_errors; 479 u64 tx_dropped; 480 }; 481 482 struct qeth_qdio_out_q { 483 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 484 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q]; 485 struct qdio_outbuf_state *bufstates; /* convenience pointer */ 486 struct qeth_out_q_stats stats; 487 u8 next_buf_to_fill; 488 u8 max_elements; 489 u8 queue_no; 490 u8 do_pack; 491 struct qeth_card *card; 492 atomic_t state; 493 /* 494 * number of buffers that are currently filled (PRIMED) 495 * -> these buffers are hardware-owned 496 */ 497 atomic_t used_buffers; 498 /* indicates whether PCI flag must be set (or if one is outstanding) */ 499 atomic_t set_pci_flags_count; 500 }; 501 502 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue) 503 { 504 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q; 505 } 506 507 struct qeth_qdio_info { 508 atomic_t state; 509 /* input */ 510 int no_in_queues; 511 struct qeth_qdio_q *in_q; 512 struct qeth_qdio_q *c_q; 513 struct qeth_qdio_buffer_pool in_buf_pool; 514 struct qeth_qdio_buffer_pool init_pool; 515 int in_buf_size; 516 517 /* output */ 518 int no_out_queues; 519 struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES]; 520 struct qdio_outbuf_state *out_bufstates; 521 522 /* priority queueing */ 523 int do_prio_queueing; 524 int default_out_queue; 525 }; 526 527 /** 528 * buffer stuff for read channel 529 */ 530 #define QETH_CMD_BUFFER_NO 8 531 532 /** 533 * channel state machine 534 */ 535 enum qeth_channel_states { 536 CH_STATE_UP, 537 CH_STATE_DOWN, 538 CH_STATE_HALTED, 539 CH_STATE_STOPPED, 540 }; 541 /** 542 * card state machine 543 */ 544 enum qeth_card_states { 545 CARD_STATE_DOWN, 546 CARD_STATE_HARDSETUP, 547 CARD_STATE_SOFTSETUP, 548 }; 549 550 /** 551 * Protocol versions 552 */ 553 enum qeth_prot_versions { 554 QETH_PROT_IPV4 = 0x0004, 555 QETH_PROT_IPV6 = 0x0006, 556 }; 557 558 enum qeth_cmd_buffer_state { 559 BUF_STATE_FREE, 560 BUF_STATE_LOCKED, 561 BUF_STATE_MALLOC, 562 }; 563 564 enum qeth_cq { 565 QETH_CQ_DISABLED = 0, 566 QETH_CQ_ENABLED = 1, 567 QETH_CQ_NOTAVAILABLE = 2, 568 }; 569 570 struct qeth_ipato { 571 bool enabled; 572 bool invert4; 573 bool invert6; 574 struct list_head entries; 575 }; 576 577 struct qeth_channel; 578 579 struct qeth_cmd_buffer { 580 enum qeth_cmd_buffer_state state; 581 unsigned int length; 582 refcount_t ref_count; 583 struct qeth_channel *channel; 584 struct qeth_reply *reply; 585 long timeout; 586 unsigned char *data; 587 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob, 588 unsigned int length); 589 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob); 590 }; 591 592 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob) 593 { 594 refcount_inc(&iob->ref_count); 595 } 596 597 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob) 598 { 599 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 600 } 601 602 /** 603 * definition of a qeth channel, used for read and write 604 */ 605 struct qeth_channel { 606 enum qeth_channel_states state; 607 struct ccw1 *ccw; 608 spinlock_t iob_lock; 609 wait_queue_head_t wait_q; 610 struct ccw_device *ccwdev; 611 /*command buffer for control data*/ 612 struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO]; 613 atomic_t irq_pending; 614 int io_buf_no; 615 }; 616 617 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob) 618 { 619 if (iob->state != BUF_STATE_MALLOC) 620 return iob->channel->ccw; 621 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8)); 622 } 623 624 static inline bool qeth_trylock_channel(struct qeth_channel *channel) 625 { 626 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0; 627 } 628 629 /** 630 * OSA card related definitions 631 */ 632 struct qeth_token { 633 __u32 issuer_rm_w; 634 __u32 issuer_rm_r; 635 __u32 cm_filter_w; 636 __u32 cm_filter_r; 637 __u32 cm_connection_w; 638 __u32 cm_connection_r; 639 __u32 ulp_filter_w; 640 __u32 ulp_filter_r; 641 __u32 ulp_connection_w; 642 __u32 ulp_connection_r; 643 }; 644 645 struct qeth_seqno { 646 __u32 trans_hdr; 647 __u32 pdu_hdr; 648 __u32 pdu_hdr_ack; 649 __u16 ipa; 650 }; 651 652 struct qeth_reply { 653 struct list_head list; 654 struct completion received; 655 int (*callback)(struct qeth_card *, struct qeth_reply *, 656 unsigned long); 657 u32 seqno; 658 unsigned long offset; 659 int rc; 660 void *param; 661 refcount_t refcnt; 662 }; 663 664 struct qeth_card_blkt { 665 int time_total; 666 int inter_packet; 667 int inter_packet_jumbo; 668 }; 669 670 #define QETH_BROADCAST_WITH_ECHO 0x01 671 #define QETH_BROADCAST_WITHOUT_ECHO 0x02 672 #define QETH_LAYER2_MAC_REGISTERED 0x02 673 struct qeth_card_info { 674 unsigned short unit_addr2; 675 unsigned short cula; 676 unsigned short chpid; 677 __u16 func_level; 678 char mcl_level[QETH_MCL_LENGTH + 1]; 679 u8 open_when_online:1; 680 u8 use_v1_blkt:1; 681 u8 is_vm_nic:1; 682 int mac_bits; 683 enum qeth_card_types type; 684 enum qeth_link_types link_type; 685 int broadcast_capable; 686 int unique_id; 687 bool layer_enforced; 688 struct qeth_card_blkt blkt; 689 enum qeth_ipa_promisc_modes promisc_mode; 690 __u32 diagass_support; 691 __u32 hwtrap; 692 }; 693 694 enum qeth_discipline_id { 695 QETH_DISCIPLINE_UNDETERMINED = -1, 696 QETH_DISCIPLINE_LAYER3 = 0, 697 QETH_DISCIPLINE_LAYER2 = 1, 698 }; 699 700 struct qeth_card_options { 701 struct qeth_routing_info route4; 702 struct qeth_ipa_info ipa4; 703 struct qeth_ipa_info adp; /*Adapter parameters*/ 704 struct qeth_routing_info route6; 705 struct qeth_ipa_info ipa6; 706 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */ 707 struct qeth_vnicc_info vnicc; /* VNICC options */ 708 int fake_broadcast; 709 enum qeth_discipline_id layer; 710 int rx_sg_cb; 711 enum qeth_ipa_isolation_modes isolation; 712 enum qeth_ipa_isolation_modes prev_isolation; 713 int sniffer; 714 enum qeth_cq cq; 715 char hsuid[9]; 716 }; 717 718 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2) 719 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3) 720 721 /* 722 * thread bits for qeth_card thread masks 723 */ 724 enum qeth_threads { 725 QETH_RECOVER_THREAD = 1, 726 }; 727 728 struct qeth_osn_info { 729 int (*assist_cb)(struct net_device *dev, void *data); 730 int (*data_cb)(struct sk_buff *skb); 731 }; 732 733 struct qeth_discipline { 734 const struct device_type *devtype; 735 int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done); 736 int (*recover)(void *ptr); 737 int (*setup) (struct ccwgroup_device *); 738 void (*remove) (struct ccwgroup_device *); 739 int (*set_online) (struct ccwgroup_device *); 740 int (*set_offline) (struct ccwgroup_device *); 741 int (*freeze)(struct ccwgroup_device *); 742 int (*thaw) (struct ccwgroup_device *); 743 int (*restore)(struct ccwgroup_device *); 744 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd); 745 int (*control_event_handler)(struct qeth_card *card, 746 struct qeth_ipa_cmd *cmd); 747 }; 748 749 enum qeth_addr_disposition { 750 QETH_DISP_ADDR_DELETE = 0, 751 QETH_DISP_ADDR_DO_NOTHING = 1, 752 QETH_DISP_ADDR_ADD = 2, 753 }; 754 755 struct qeth_rx { 756 int b_count; 757 int b_index; 758 struct qdio_buffer_element *b_element; 759 int e_offset; 760 int qdio_err; 761 }; 762 763 struct carrier_info { 764 __u8 card_type; 765 __u16 port_mode; 766 __u32 port_speed; 767 }; 768 769 struct qeth_switch_info { 770 __u32 capabilities; 771 __u32 settings; 772 }; 773 774 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT 775 776 struct qeth_card { 777 enum qeth_card_states state; 778 spinlock_t lock; 779 struct ccwgroup_device *gdev; 780 struct qeth_cmd_buffer *read_cmd; 781 struct qeth_channel read; 782 struct qeth_channel write; 783 struct qeth_channel data; 784 785 struct net_device *dev; 786 struct qeth_card_stats stats; 787 struct qeth_card_info info; 788 struct qeth_token token; 789 struct qeth_seqno seqno; 790 struct qeth_card_options options; 791 792 struct workqueue_struct *event_wq; 793 struct workqueue_struct *cmd_wq; 794 wait_queue_head_t wait_q; 795 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 796 DECLARE_HASHTABLE(mac_htable, 4); 797 DECLARE_HASHTABLE(ip_htable, 4); 798 struct mutex ip_lock; 799 DECLARE_HASHTABLE(ip_mc_htable, 4); 800 struct work_struct rx_mode_work; 801 struct work_struct kernel_thread_starter; 802 spinlock_t thread_mask_lock; 803 unsigned long thread_start_mask; 804 unsigned long thread_allowed_mask; 805 unsigned long thread_running_mask; 806 struct qeth_ipato ipato; 807 struct list_head cmd_waiter_list; 808 /* QDIO buffer handling */ 809 struct qeth_qdio_info qdio; 810 int read_or_write_problem; 811 struct qeth_osn_info osn_info; 812 struct qeth_discipline *discipline; 813 atomic_t force_alloc_skb; 814 struct service_level qeth_service_level; 815 struct qdio_ssqd_desc ssqd; 816 debug_info_t *debug; 817 struct mutex conf_mutex; 818 struct mutex discipline_mutex; 819 struct napi_struct napi; 820 struct qeth_rx rx; 821 struct delayed_work buffer_reclaim_work; 822 int reclaim_index; 823 struct work_struct close_dev_work; 824 }; 825 826 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card) 827 { 828 return card->state == CARD_STATE_SOFTSETUP; 829 } 830 831 struct qeth_trap_id { 832 __u16 lparnr; 833 char vmname[8]; 834 __u8 chpid; 835 __u8 ssid; 836 __u16 devno; 837 } __packed; 838 839 /*some helper functions*/ 840 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "") 841 842 static inline bool qeth_netdev_is_registered(struct net_device *dev) 843 { 844 return dev->netdev_ops != NULL; 845 } 846 847 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq) 848 { 849 if (txq == QETH_IQD_MCAST_TXQ) 850 return dev->num_tx_queues - 1; 851 if (txq == dev->num_tx_queues - 1) 852 return QETH_IQD_MCAST_TXQ; 853 return txq; 854 } 855 856 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf, 857 unsigned int elements) 858 { 859 unsigned int i; 860 861 for (i = 0; i < elements; i++) 862 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element)); 863 buf->element[14].sflags = 0; 864 buf->element[15].sflags = 0; 865 } 866 867 /** 868 * qeth_get_elements_for_range() - find number of SBALEs to cover range. 869 * @start: Start of the address range. 870 * @end: Address after the end of the range. 871 * 872 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 873 * the specified address range. 874 */ 875 static inline int qeth_get_elements_for_range(addr_t start, addr_t end) 876 { 877 return PFN_UP(end) - PFN_DOWN(start); 878 } 879 880 static inline int qeth_get_ip_version(struct sk_buff *skb) 881 { 882 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 883 __be16 prot = veth->h_vlan_proto; 884 885 if (prot == htons(ETH_P_8021Q)) 886 prot = veth->h_vlan_encapsulated_proto; 887 888 switch (prot) { 889 case htons(ETH_P_IPV6): 890 return 6; 891 case htons(ETH_P_IP): 892 return 4; 893 default: 894 return 0; 895 } 896 } 897 898 static inline int qeth_get_ether_cast_type(struct sk_buff *skb) 899 { 900 u8 *addr = eth_hdr(skb)->h_dest; 901 902 if (is_multicast_ether_addr(addr)) 903 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST : 904 RTN_MULTICAST; 905 return RTN_UNICAST; 906 } 907 908 static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb, 909 u8 flags) 910 { 911 if ((card->dev->features & NETIF_F_RXCSUM) && 912 (flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) { 913 skb->ip_summed = CHECKSUM_UNNECESSARY; 914 QETH_CARD_STAT_INC(card, rx_skb_csum); 915 } else { 916 skb->ip_summed = CHECKSUM_NONE; 917 } 918 } 919 920 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv) 921 { 922 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; 923 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) || 924 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) 925 *flags |= QETH_HDR_EXT_UDP; 926 } 927 928 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, 929 struct qeth_buffer_pool_entry *entry) 930 { 931 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list); 932 } 933 934 static inline int qeth_is_diagass_supported(struct qeth_card *card, 935 enum qeth_diags_cmds cmd) 936 { 937 return card->info.diagass_support & (__u32)cmd; 938 } 939 940 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 941 enum qeth_ipa_funcs ipa_func, 942 u16 cmd_code, long data, 943 enum qeth_prot_versions prot); 944 /* IPv4 variant */ 945 static inline int qeth_send_simple_setassparms(struct qeth_card *card, 946 enum qeth_ipa_funcs ipa_func, 947 u16 cmd_code, long data) 948 { 949 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 950 data, QETH_PROT_IPV4); 951 } 952 953 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card, 954 enum qeth_ipa_funcs ipa_func, 955 u16 cmd_code, long data) 956 { 957 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 958 data, QETH_PROT_IPV6); 959 } 960 961 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb); 962 963 extern struct qeth_discipline qeth_l2_discipline; 964 extern struct qeth_discipline qeth_l3_discipline; 965 extern const struct ethtool_ops qeth_ethtool_ops; 966 extern const struct ethtool_ops qeth_osn_ethtool_ops; 967 extern const struct attribute_group *qeth_generic_attr_groups[]; 968 extern const struct attribute_group *qeth_osn_attr_groups[]; 969 extern const struct attribute_group qeth_device_attr_group; 970 extern const struct attribute_group qeth_device_blkt_group; 971 extern const struct device_type qeth_generic_devtype; 972 973 const char *qeth_get_cardname_short(struct qeth_card *); 974 int qeth_realloc_buffer_pool(struct qeth_card *, int); 975 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id); 976 void qeth_core_free_discipline(struct qeth_card *); 977 978 /* exports for qeth discipline device drivers */ 979 extern struct kmem_cache *qeth_core_header_cache; 980 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; 981 982 struct net_device *qeth_clone_netdev(struct net_device *orig); 983 struct qeth_card *qeth_get_card_by_busid(char *bus_id); 984 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int); 985 int qeth_threads_running(struct qeth_card *, unsigned long); 986 int qeth_do_run_thread(struct qeth_card *, unsigned long); 987 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long); 988 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long); 989 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok); 990 void qeth_print_status_message(struct qeth_card *); 991 int qeth_init_qdio_queues(struct qeth_card *); 992 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, 993 int (*reply_cb) 994 (struct qeth_card *, struct qeth_reply *, unsigned long), 995 void *); 996 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *, 997 enum qeth_ipa_cmds, enum qeth_prot_versions); 998 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *, 999 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *, 1000 struct qeth_hdr **); 1001 void qeth_schedule_recovery(struct qeth_card *); 1002 int qeth_poll(struct napi_struct *napi, int budget); 1003 void qeth_clear_ipacmd_list(struct qeth_card *); 1004 int qeth_qdio_clear_card(struct qeth_card *, int); 1005 void qeth_clear_working_pool_list(struct qeth_card *); 1006 void qeth_clear_cmd_buffers(struct qeth_channel *); 1007 void qeth_drain_output_queues(struct qeth_card *card); 1008 void qeth_setadp_promisc_mode(struct qeth_card *); 1009 int qeth_setadpparms_change_macaddr(struct qeth_card *); 1010 void qeth_tx_timeout(struct net_device *); 1011 void qeth_release_buffer(struct qeth_cmd_buffer *iob); 1012 void qeth_notify_reply(struct qeth_reply *reply, int reason); 1013 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 1014 u16 cmd_length); 1015 struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel); 1016 int qeth_query_switch_attributes(struct qeth_card *card, 1017 struct qeth_switch_info *sw_info); 1018 int qeth_query_card_info(struct qeth_card *card, 1019 struct carrier_info *carrier_info); 1020 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset); 1021 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 1022 struct sk_buff *skb, struct qeth_hdr *hdr, 1023 unsigned int offset, unsigned int hd_len, 1024 int elements_needed); 1025 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1026 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); 1027 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback); 1028 int qeth_configure_cq(struct qeth_card *, enum qeth_cq); 1029 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action); 1030 void qeth_trace_features(struct qeth_card *); 1031 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long); 1032 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *, 1033 enum qeth_ipa_funcs, 1034 __u16, __u16, 1035 enum qeth_prot_versions); 1036 int qeth_set_features(struct net_device *, netdev_features_t); 1037 void qeth_enable_hw_features(struct net_device *dev); 1038 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t); 1039 netdev_features_t qeth_features_check(struct sk_buff *skb, 1040 struct net_device *dev, 1041 netdev_features_t features); 1042 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats); 1043 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1044 u8 cast_type, struct net_device *sb_dev); 1045 int qeth_open(struct net_device *dev); 1046 int qeth_stop(struct net_device *dev); 1047 1048 int qeth_vm_request_mac(struct qeth_card *card); 1049 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 1050 struct qeth_qdio_out_q *queue, int ipv, int cast_type, 1051 void (*fill_header)(struct qeth_qdio_out_q *queue, 1052 struct qeth_hdr *hdr, struct sk_buff *skb, 1053 int ipv, int cast_type, 1054 unsigned int data_len)); 1055 1056 /* exports for OSN */ 1057 int qeth_osn_assist(struct net_device *, void *, int); 1058 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **, 1059 int (*assist_cb)(struct net_device *, void *), 1060 int (*data_cb)(struct sk_buff *)); 1061 void qeth_osn_deregister(struct net_device *); 1062 1063 #endif /* __QETH_CORE_H__ */ 1064