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/debugfs.h> 15 #include <linux/if.h> 16 #include <linux/if_arp.h> 17 #include <linux/etherdevice.h> 18 #include <linux/if_vlan.h> 19 #include <linux/ctype.h> 20 #include <linux/in6.h> 21 #include <linux/bitops.h> 22 #include <linux/seq_file.h> 23 #include <linux/hashtable.h> 24 #include <linux/ip.h> 25 #include <linux/rcupdate.h> 26 #include <linux/refcount.h> 27 #include <linux/timer.h> 28 #include <linux/types.h> 29 #include <linux/wait.h> 30 #include <linux/workqueue.h> 31 32 #include <net/dst.h> 33 #include <net/ip6_fib.h> 34 #include <net/ipv6.h> 35 #include <net/if_inet6.h> 36 #include <net/addrconf.h> 37 #include <net/route.h> 38 #include <net/sch_generic.h> 39 #include <net/tcp.h> 40 41 #include <asm/debug.h> 42 #include <asm/qdio.h> 43 #include <asm/ccwdev.h> 44 #include <asm/ccwgroup.h> 45 #include <asm/sysinfo.h> 46 47 #include <uapi/linux/if_link.h> 48 49 #include "qeth_core_mpc.h" 50 51 /** 52 * Debug Facility stuff 53 */ 54 enum qeth_dbf_names { 55 QETH_DBF_SETUP, 56 QETH_DBF_MSG, 57 QETH_DBF_CTRL, 58 QETH_DBF_INFOS /* must be last element */ 59 }; 60 61 struct qeth_dbf_info { 62 char name[DEBUG_MAX_NAME_LEN]; 63 int pages; 64 int areas; 65 int len; 66 int level; 67 struct debug_view *view; 68 debug_info_t *id; 69 }; 70 71 #define QETH_DBF_CTRL_LEN 256U 72 73 #define QETH_DBF_TEXT(name, level, text) \ 74 debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text) 75 76 #define QETH_DBF_HEX(name, level, addr, len) \ 77 debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len) 78 79 #define QETH_DBF_MESSAGE(level, text...) \ 80 debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text) 81 82 #define QETH_DBF_TEXT_(name, level, text...) \ 83 qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text) 84 85 #define QETH_CARD_TEXT(card, level, text) \ 86 debug_text_event(card->debug, level, text) 87 88 #define QETH_CARD_HEX(card, level, addr, len) \ 89 debug_event(card->debug, level, (void *)(addr), len) 90 91 #define QETH_CARD_MESSAGE(card, text...) \ 92 debug_sprintf_event(card->debug, level, text) 93 94 #define QETH_CARD_TEXT_(card, level, text...) \ 95 qeth_dbf_longtext(card->debug, level, text) 96 97 #define SENSE_COMMAND_REJECT_BYTE 0 98 #define SENSE_COMMAND_REJECT_FLAG 0x80 99 #define SENSE_RESETTING_EVENT_BYTE 1 100 #define SENSE_RESETTING_EVENT_FLAG 0x80 101 102 static inline u32 qeth_get_device_id(struct ccw_device *cdev) 103 { 104 struct ccw_dev_id dev_id; 105 u32 id; 106 107 ccw_device_get_id(cdev, &dev_id); 108 id = dev_id.devno; 109 id |= (u32) (dev_id.ssid << 16); 110 111 return id; 112 } 113 114 /* 115 * Common IO related definitions 116 */ 117 #define CARD_RDEV(card) card->read.ccwdev 118 #define CARD_WDEV(card) card->write.ccwdev 119 #define CARD_DDEV(card) card->data.ccwdev 120 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev) 121 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev) 122 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev) 123 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev) 124 #define CCW_DEVID(cdev) (qeth_get_device_id(cdev)) 125 #define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card))) 126 127 /* Routing stuff */ 128 struct qeth_routing_info { 129 enum qeth_routing_types type; 130 }; 131 132 /* SETBRIDGEPORT stuff */ 133 enum qeth_sbp_roles { 134 QETH_SBP_ROLE_NONE = 0, 135 QETH_SBP_ROLE_PRIMARY = 1, 136 QETH_SBP_ROLE_SECONDARY = 2, 137 }; 138 139 enum qeth_sbp_states { 140 QETH_SBP_STATE_INACTIVE = 0, 141 QETH_SBP_STATE_STANDBY = 1, 142 QETH_SBP_STATE_ACTIVE = 2, 143 }; 144 145 #define QETH_SBP_HOST_NOTIFICATION 1 146 147 struct qeth_sbp_info { 148 __u32 supported_funcs; 149 enum qeth_sbp_roles role; 150 __u32 hostnotification:1; 151 __u32 reflect_promisc:1; 152 __u32 reflect_promisc_primary:1; 153 }; 154 155 struct qeth_vnicc_info { 156 /* supported/currently configured VNICCs; updated in IPA exchanges */ 157 u32 sup_chars; 158 u32 cur_chars; 159 /* supported commands: bitmasks which VNICCs support respective cmd */ 160 u32 set_char_sup; 161 u32 getset_timeout_sup; 162 /* timeout value for the learning characteristic */ 163 u32 learning_timeout; 164 /* characteristics wanted/configured by user */ 165 u32 wanted_chars; 166 /* has user explicitly enabled rx_bcast while online? */ 167 bool rx_bcast_enabled; 168 }; 169 170 #define QETH_IDX_FUNC_LEVEL_OSD 0x0101 171 #define QETH_IDX_FUNC_LEVEL_IQD 0x4108 172 173 #define QETH_BUFSIZE 4096 174 #define CCW_CMD_WRITE 0x01 175 #define CCW_CMD_READ 0x02 176 177 /** 178 * some more defs 179 */ 180 #define QETH_TX_TIMEOUT 100 * HZ 181 #define QETH_RCD_TIMEOUT 60 * HZ 182 #define QETH_RECLAIM_WORK_TIME HZ 183 #define QETH_MAX_PORTNO 15 184 185 /*****************************************************************************/ 186 /* QDIO queue and buffer handling */ 187 /*****************************************************************************/ 188 #define QETH_MAX_OUT_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 1 192 193 #define QETH_MAX_IN_QUEUES 2 194 #define QETH_RX_COPYBREAK (PAGE_SIZE >> 1) 195 #define QETH_IN_BUF_SIZE_DEFAULT 65536 196 #define QETH_IN_BUF_COUNT_DEFAULT 64 197 #define QETH_IN_BUF_COUNT_HSDEFAULT 128 198 #define QETH_IN_BUF_COUNT_MIN 8 199 #define QETH_IN_BUF_COUNT_MAX 128 200 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12) 201 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \ 202 ((card)->qdio.in_buf_pool.buf_count / 2) 203 204 /* buffers we have to be behind before we get a PCI */ 205 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1) 206 /*enqueued free buffers left before we get a PCI*/ 207 #define QETH_PCI_THRESHOLD_B(card) 0 208 /*not used unless the microcode gets patched*/ 209 #define QETH_PCI_TIMER_VALUE(card) 3 210 211 /* priority queing */ 212 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING 213 #define QETH_DEFAULT_QUEUE 2 214 #define QETH_NO_PRIO_QUEUEING 0 215 #define QETH_PRIO_Q_ING_PREC 1 216 #define QETH_PRIO_Q_ING_TOS 2 217 #define QETH_PRIO_Q_ING_SKB 3 218 #define QETH_PRIO_Q_ING_VLAN 4 219 #define QETH_PRIO_Q_ING_FIXED 5 220 221 /* Packing */ 222 #define QETH_LOW_WATERMARK_PACK 2 223 #define QETH_HIGH_WATERMARK_PACK 5 224 #define QETH_WATERMARK_PACK_FUZZ 1 225 226 struct qeth_hdr_layer3 { 227 __u8 id; 228 __u8 flags; 229 __u16 inbound_checksum; /*TSO:__u16 seqno */ 230 __u32 token; /*TSO: __u32 reserved */ 231 __u16 length; 232 __u8 vlan_prio; 233 __u8 ext_flags; 234 __u16 vlan_id; 235 __u16 frame_offset; 236 union { 237 /* TX: */ 238 struct in6_addr addr; 239 /* RX: */ 240 struct rx { 241 u8 res1[2]; 242 u8 src_mac[6]; 243 u8 res2[4]; 244 u16 vlan_id; 245 u8 res3[2]; 246 } rx; 247 } next_hop; 248 }; 249 250 struct qeth_hdr_layer2 { 251 __u8 id; 252 __u8 flags[3]; 253 __u8 port_no; 254 __u8 hdr_length; 255 __u16 pkt_length; 256 __u16 seq_no; 257 __u16 vlan_id; 258 __u32 reserved; 259 __u8 reserved2[16]; 260 } __attribute__ ((packed)); 261 262 struct qeth_hdr_osn { 263 __u8 id; 264 __u8 reserved; 265 __u16 seq_no; 266 __u16 reserved2; 267 __u16 control_flags; 268 __u16 pdu_length; 269 __u8 reserved3[18]; 270 __u32 ccid; 271 } __attribute__ ((packed)); 272 273 struct qeth_hdr { 274 union { 275 struct qeth_hdr_layer2 l2; 276 struct qeth_hdr_layer3 l3; 277 struct qeth_hdr_osn osn; 278 } hdr; 279 } __attribute__ ((packed)); 280 281 /*TCP Segmentation Offload header*/ 282 struct qeth_hdr_ext_tso { 283 __u16 hdr_tot_len; 284 __u8 imb_hdr_no; 285 __u8 reserved; 286 __u8 hdr_type; 287 __u8 hdr_version; 288 __u16 hdr_len; 289 __u32 payload_len; 290 __u16 mss; 291 __u16 dg_hdr_len; 292 __u8 padding[16]; 293 } __attribute__ ((packed)); 294 295 struct qeth_hdr_tso { 296 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/ 297 struct qeth_hdr_ext_tso ext; 298 } __attribute__ ((packed)); 299 300 301 /* flags for qeth_hdr.flags */ 302 #define QETH_HDR_PASSTHRU 0x10 303 #define QETH_HDR_IPV6 0x80 304 #define QETH_HDR_CAST_MASK 0x07 305 enum qeth_cast_flags { 306 QETH_CAST_UNICAST = 0x06, 307 QETH_CAST_MULTICAST = 0x04, 308 QETH_CAST_BROADCAST = 0x05, 309 QETH_CAST_ANYCAST = 0x07, 310 QETH_CAST_NOCAST = 0x00, 311 }; 312 313 enum qeth_layer2_frame_flags { 314 QETH_LAYER2_FLAG_MULTICAST = 0x01, 315 QETH_LAYER2_FLAG_BROADCAST = 0x02, 316 QETH_LAYER2_FLAG_UNICAST = 0x04, 317 QETH_LAYER2_FLAG_VLAN = 0x10, 318 }; 319 320 enum qeth_header_ids { 321 QETH_HEADER_TYPE_LAYER3 = 0x01, 322 QETH_HEADER_TYPE_LAYER2 = 0x02, 323 QETH_HEADER_TYPE_L3_TSO = 0x03, 324 QETH_HEADER_TYPE_OSN = 0x04, 325 QETH_HEADER_TYPE_L2_TSO = 0x06, 326 QETH_HEADER_MASK_INVAL = 0x80, 327 }; 328 /* flags for qeth_hdr.ext_flags */ 329 #define QETH_HDR_EXT_VLAN_FRAME 0x01 330 #define QETH_HDR_EXT_TOKEN_ID 0x02 331 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04 332 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08 333 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10 334 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20 335 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/ 336 337 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1, 338 struct qeth_hdr_layer2 *h2) 339 { 340 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) && 341 h1->vlan_id == h2->vlan_id; 342 } 343 344 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1, 345 struct qeth_hdr_layer3 *h2) 346 { 347 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) && 348 h1->vlan_id == h2->vlan_id; 349 } 350 351 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1, 352 struct qeth_hdr_layer3 *h2) 353 { 354 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) && 355 ipv6_addr_equal(&h1->next_hop.addr, &h2->next_hop.addr); 356 } 357 358 struct qeth_local_addr { 359 struct hlist_node hnode; 360 struct rcu_head rcu; 361 struct in6_addr addr; 362 }; 363 364 enum qeth_qdio_info_states { 365 QETH_QDIO_UNINITIALIZED, 366 QETH_QDIO_ALLOCATED, 367 QETH_QDIO_ESTABLISHED, 368 QETH_QDIO_CLEANING 369 }; 370 371 struct qeth_buffer_pool_entry { 372 struct list_head list; 373 struct list_head init_list; 374 struct page *elements[QDIO_MAX_ELEMENTS_PER_BUFFER]; 375 }; 376 377 struct qeth_qdio_buffer_pool { 378 struct list_head entry_list; 379 int buf_count; 380 }; 381 382 struct qeth_qdio_buffer { 383 struct qdio_buffer *buffer; 384 /* the buffer pool entry currently associated to this buffer */ 385 struct qeth_buffer_pool_entry *pool_entry; 386 struct sk_buff *rx_skb; 387 }; 388 389 struct qeth_qdio_q { 390 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 391 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q]; 392 int next_buf_to_init; 393 }; 394 395 enum qeth_qdio_out_buffer_state { 396 /* Owned by driver, in order to be filled. */ 397 QETH_QDIO_BUF_EMPTY, 398 /* Filled by driver; owned by hardware in order to be sent. */ 399 QETH_QDIO_BUF_PRIMED, 400 /* Identified to be pending in TPQ. */ 401 QETH_QDIO_BUF_PENDING, 402 /* Found in completion queue. */ 403 QETH_QDIO_BUF_IN_CQ, 404 /* Handled via transfer pending / completion queue. */ 405 QETH_QDIO_BUF_HANDLED_DELAYED, 406 }; 407 408 struct qeth_qdio_out_buffer { 409 struct qdio_buffer *buffer; 410 atomic_t state; 411 int next_element_to_fill; 412 unsigned int frames; 413 unsigned int bytes; 414 struct sk_buff_head skb_list; 415 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER]; 416 417 struct qeth_qdio_out_q *q; 418 struct qeth_qdio_out_buffer *next_pending; 419 }; 420 421 struct qeth_card; 422 423 enum qeth_out_q_states { 424 QETH_OUT_Q_UNLOCKED, 425 QETH_OUT_Q_LOCKED, 426 QETH_OUT_Q_LOCKED_FLUSH, 427 }; 428 429 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val)) 430 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1) 431 432 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val)) 433 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1) 434 435 struct qeth_card_stats { 436 u64 rx_bufs; 437 u64 rx_skb_csum; 438 u64 rx_sg_skbs; 439 u64 rx_sg_frags; 440 u64 rx_sg_alloc_page; 441 442 u64 rx_dropped_nomem; 443 u64 rx_dropped_notsupp; 444 u64 rx_dropped_runt; 445 446 /* rtnl_link_stats64 */ 447 u64 rx_packets; 448 u64 rx_bytes; 449 u64 rx_multicast; 450 u64 rx_length_errors; 451 u64 rx_frame_errors; 452 u64 rx_fifo_errors; 453 }; 454 455 struct qeth_out_q_stats { 456 u64 bufs; 457 u64 bufs_pack; 458 u64 buf_elements; 459 u64 skbs_pack; 460 u64 skbs_sg; 461 u64 skbs_csum; 462 u64 skbs_tso; 463 u64 skbs_linearized; 464 u64 skbs_linearized_fail; 465 u64 tso_bytes; 466 u64 packing_mode_switch; 467 u64 stopped; 468 u64 doorbell; 469 u64 coal_frames; 470 u64 completion_yield; 471 u64 completion_timer; 472 473 /* rtnl_link_stats64 */ 474 u64 tx_packets; 475 u64 tx_bytes; 476 u64 tx_errors; 477 u64 tx_dropped; 478 }; 479 480 #define QETH_TX_MAX_COALESCED_FRAMES 1 481 #define QETH_TX_COALESCE_USECS 25 482 #define QETH_TX_TIMER_USECS 500 483 484 struct qeth_qdio_out_q { 485 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 486 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q]; 487 struct qdio_outbuf_state *bufstates; /* convenience pointer */ 488 struct qeth_out_q_stats stats; 489 u8 next_buf_to_fill; 490 u8 max_elements; 491 u8 queue_no; 492 u8 do_pack; 493 struct qeth_card *card; 494 atomic_t state; 495 /* 496 * number of buffers that are currently filled (PRIMED) 497 * -> these buffers are hardware-owned 498 */ 499 atomic_t used_buffers; 500 /* indicates whether PCI flag must be set (or if one is outstanding) */ 501 atomic_t set_pci_flags_count; 502 struct napi_struct napi; 503 struct timer_list timer; 504 struct qeth_hdr *prev_hdr; 505 unsigned int coalesced_frames; 506 u8 bulk_start; 507 u8 bulk_count; 508 u8 bulk_max; 509 510 unsigned int coalesce_usecs; 511 unsigned int max_coalesced_frames; 512 }; 513 514 #define qeth_for_each_output_queue(card, q, i) \ 515 for (i = 0; i < card->qdio.no_out_queues && \ 516 (q = card->qdio.out_qs[i]); i++) 517 518 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi) 519 520 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue, 521 unsigned long usecs) 522 { 523 timer_reduce(&queue->timer, usecs_to_jiffies(usecs) + jiffies); 524 } 525 526 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue) 527 { 528 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q; 529 } 530 531 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue) 532 { 533 return atomic_read(&queue->used_buffers) == 0; 534 } 535 536 struct qeth_qdio_info { 537 atomic_t state; 538 /* input */ 539 int no_in_queues; 540 struct qeth_qdio_q *in_q; 541 struct qeth_qdio_q *c_q; 542 struct qeth_qdio_buffer_pool in_buf_pool; 543 struct qeth_qdio_buffer_pool init_pool; 544 int in_buf_size; 545 546 /* output */ 547 int no_out_queues; 548 struct qeth_qdio_out_q *out_qs[QETH_MAX_OUT_QUEUES]; 549 struct qdio_outbuf_state *out_bufstates; 550 551 /* priority queueing */ 552 int do_prio_queueing; 553 int default_out_queue; 554 }; 555 556 /** 557 * channel state machine 558 */ 559 enum qeth_channel_states { 560 CH_STATE_UP, 561 CH_STATE_DOWN, 562 CH_STATE_HALTED, 563 CH_STATE_STOPPED, 564 }; 565 /** 566 * card state machine 567 */ 568 enum qeth_card_states { 569 CARD_STATE_DOWN, 570 CARD_STATE_SOFTSETUP, 571 }; 572 573 /** 574 * Protocol versions 575 */ 576 enum qeth_prot_versions { 577 QETH_PROT_NONE = 0x0000, 578 QETH_PROT_IPV4 = 0x0004, 579 QETH_PROT_IPV6 = 0x0006, 580 }; 581 582 enum qeth_cq { 583 QETH_CQ_DISABLED = 0, 584 QETH_CQ_ENABLED = 1, 585 QETH_CQ_NOTAVAILABLE = 2, 586 }; 587 588 struct qeth_ipato { 589 bool enabled; 590 bool invert4; 591 bool invert6; 592 struct list_head entries; 593 }; 594 595 struct qeth_channel { 596 struct ccw_device *ccwdev; 597 struct qeth_cmd_buffer *active_cmd; 598 enum qeth_channel_states state; 599 atomic_t irq_pending; 600 }; 601 602 struct qeth_reply { 603 int (*callback)(struct qeth_card *card, struct qeth_reply *reply, 604 unsigned long data); 605 void *param; 606 }; 607 608 struct qeth_cmd_buffer { 609 struct list_head list; 610 struct completion done; 611 spinlock_t lock; 612 unsigned int length; 613 refcount_t ref_count; 614 struct qeth_channel *channel; 615 struct qeth_reply reply; 616 long timeout; 617 unsigned char *data; 618 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob); 619 bool (*match)(struct qeth_cmd_buffer *iob, 620 struct qeth_cmd_buffer *reply); 621 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob, 622 unsigned int data_length); 623 int rc; 624 }; 625 626 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob) 627 { 628 refcount_inc(&iob->ref_count); 629 } 630 631 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob) 632 { 633 if (!IS_IPA(iob->data)) 634 return NULL; 635 636 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 637 } 638 639 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob) 640 { 641 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 642 } 643 644 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob) 645 { 646 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8)); 647 } 648 649 static inline bool qeth_trylock_channel(struct qeth_channel *channel) 650 { 651 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0; 652 } 653 654 /** 655 * OSA card related definitions 656 */ 657 struct qeth_token { 658 __u32 issuer_rm_w; 659 __u32 issuer_rm_r; 660 __u32 cm_filter_w; 661 __u32 cm_filter_r; 662 __u32 cm_connection_w; 663 __u32 cm_connection_r; 664 __u32 ulp_filter_w; 665 __u32 ulp_filter_r; 666 __u32 ulp_connection_w; 667 __u32 ulp_connection_r; 668 }; 669 670 struct qeth_seqno { 671 __u32 trans_hdr; 672 __u32 pdu_hdr; 673 __u32 pdu_hdr_ack; 674 __u16 ipa; 675 }; 676 677 struct qeth_card_blkt { 678 int time_total; 679 int inter_packet; 680 int inter_packet_jumbo; 681 }; 682 683 #define QETH_BROADCAST_WITH_ECHO 0x01 684 #define QETH_BROADCAST_WITHOUT_ECHO 0x02 685 struct qeth_card_info { 686 unsigned short unit_addr2; 687 unsigned short cula; 688 u8 chpid; 689 __u16 func_level; 690 char mcl_level[QETH_MCL_LENGTH + 1]; 691 u8 dev_addr_is_registered:1; 692 u8 open_when_online:1; 693 u8 promisc_mode:1; 694 u8 use_v1_blkt:1; 695 u8 is_vm_nic:1; 696 /* no bitfield, we take a pointer on these two: */ 697 u8 has_lp2lp_cso_v6; 698 u8 has_lp2lp_cso_v4; 699 enum qeth_card_types type; 700 enum qeth_link_types link_type; 701 int broadcast_capable; 702 bool layer_enforced; 703 struct qeth_card_blkt blkt; 704 __u32 diagass_support; 705 __u32 hwtrap; 706 }; 707 708 enum qeth_discipline_id { 709 QETH_DISCIPLINE_UNDETERMINED = -1, 710 QETH_DISCIPLINE_LAYER3 = 0, 711 QETH_DISCIPLINE_LAYER2 = 1, 712 }; 713 714 struct qeth_card_options { 715 struct qeth_ipa_caps ipa4; 716 struct qeth_ipa_caps ipa6; 717 struct qeth_routing_info route4; 718 struct qeth_routing_info route6; 719 struct qeth_ipa_caps adp; /* Adapter parameters */ 720 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */ 721 struct qeth_vnicc_info vnicc; /* VNICC options */ 722 enum qeth_discipline_id layer; 723 enum qeth_ipa_isolation_modes isolation; 724 enum qeth_ipa_isolation_modes prev_isolation; 725 int sniffer; 726 enum qeth_cq cq; 727 char hsuid[9]; 728 }; 729 730 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2) 731 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3) 732 733 /* 734 * thread bits for qeth_card thread masks 735 */ 736 enum qeth_threads { 737 QETH_RECOVER_THREAD = 1, 738 }; 739 740 struct qeth_osn_info { 741 int (*assist_cb)(struct net_device *dev, void *data); 742 int (*data_cb)(struct sk_buff *skb); 743 }; 744 745 struct qeth_discipline { 746 const struct device_type *devtype; 747 int (*setup) (struct ccwgroup_device *); 748 void (*remove) (struct ccwgroup_device *); 749 int (*set_online)(struct qeth_card *card); 750 void (*set_offline)(struct qeth_card *card); 751 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd); 752 int (*control_event_handler)(struct qeth_card *card, 753 struct qeth_ipa_cmd *cmd); 754 }; 755 756 enum qeth_addr_disposition { 757 QETH_DISP_ADDR_DELETE = 0, 758 QETH_DISP_ADDR_DO_NOTHING = 1, 759 QETH_DISP_ADDR_ADD = 2, 760 }; 761 762 struct qeth_rx { 763 int b_count; 764 int b_index; 765 u8 buf_element; 766 int e_offset; 767 int qdio_err; 768 }; 769 770 struct carrier_info { 771 __u8 card_type; 772 __u16 port_mode; 773 __u32 port_speed; 774 }; 775 776 struct qeth_switch_info { 777 __u32 capabilities; 778 __u32 settings; 779 }; 780 781 struct qeth_priv { 782 unsigned int rx_copybreak; 783 }; 784 785 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT 786 787 struct qeth_card { 788 enum qeth_card_states state; 789 spinlock_t lock; 790 struct ccwgroup_device *gdev; 791 struct qeth_cmd_buffer *read_cmd; 792 struct qeth_channel read; 793 struct qeth_channel write; 794 struct qeth_channel data; 795 796 struct net_device *dev; 797 struct dentry *debugfs; 798 struct qeth_card_stats stats; 799 struct qeth_card_info info; 800 struct qeth_token token; 801 struct qeth_seqno seqno; 802 struct qeth_card_options options; 803 804 struct workqueue_struct *event_wq; 805 struct workqueue_struct *cmd_wq; 806 wait_queue_head_t wait_q; 807 DECLARE_HASHTABLE(mac_htable, 4); 808 DECLARE_HASHTABLE(ip_htable, 4); 809 DECLARE_HASHTABLE(local_addrs4, 4); 810 DECLARE_HASHTABLE(local_addrs6, 4); 811 spinlock_t local_addrs4_lock; 812 spinlock_t local_addrs6_lock; 813 struct mutex ip_lock; 814 DECLARE_HASHTABLE(ip_mc_htable, 4); 815 struct work_struct rx_mode_work; 816 struct work_struct kernel_thread_starter; 817 spinlock_t thread_mask_lock; 818 unsigned long thread_start_mask; 819 unsigned long thread_allowed_mask; 820 unsigned long thread_running_mask; 821 struct qeth_ipato ipato; 822 struct list_head cmd_waiter_list; 823 /* QDIO buffer handling */ 824 struct qeth_qdio_info qdio; 825 int read_or_write_problem; 826 struct qeth_osn_info osn_info; 827 struct qeth_discipline *discipline; 828 atomic_t force_alloc_skb; 829 struct service_level qeth_service_level; 830 struct qdio_ssqd_desc ssqd; 831 debug_info_t *debug; 832 struct mutex sbp_lock; 833 struct mutex conf_mutex; 834 struct mutex discipline_mutex; 835 struct napi_struct napi; 836 struct qeth_rx rx; 837 struct delayed_work buffer_reclaim_work; 838 int reclaim_index; 839 struct work_struct close_dev_work; 840 }; 841 842 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card) 843 { 844 return card->state == CARD_STATE_SOFTSETUP; 845 } 846 847 static inline void qeth_unlock_channel(struct qeth_card *card, 848 struct qeth_channel *channel) 849 { 850 atomic_set(&channel->irq_pending, 0); 851 wake_up(&card->wait_q); 852 } 853 854 struct qeth_trap_id { 855 __u16 lparnr; 856 char vmname[8]; 857 __u8 chpid; 858 __u8 ssid; 859 __u16 devno; 860 } __packed; 861 862 /*some helper functions*/ 863 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "") 864 865 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq) 866 { 867 if (txq == QETH_IQD_MCAST_TXQ) 868 return dev->num_tx_queues - 1; 869 if (txq == dev->num_tx_queues - 1) 870 return QETH_IQD_MCAST_TXQ; 871 return txq; 872 } 873 874 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card, 875 struct qeth_qdio_out_q *queue) 876 { 877 return qeth_iqd_translate_txq(card->dev, queue->queue_no) == 878 QETH_IQD_MCAST_TXQ; 879 } 880 881 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf, 882 unsigned int elements) 883 { 884 unsigned int i; 885 886 for (i = 0; i < elements; i++) 887 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element)); 888 buf->element[14].sflags = 0; 889 buf->element[15].sflags = 0; 890 } 891 892 /** 893 * qeth_get_elements_for_range() - find number of SBALEs to cover range. 894 * @start: Start of the address range. 895 * @end: Address after the end of the range. 896 * 897 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 898 * the specified address range. 899 */ 900 static inline int qeth_get_elements_for_range(addr_t start, addr_t end) 901 { 902 return PFN_UP(end) - PFN_DOWN(start); 903 } 904 905 static inline int qeth_get_ip_version(struct sk_buff *skb) 906 { 907 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 908 __be16 prot = veth->h_vlan_proto; 909 910 if (prot == htons(ETH_P_8021Q)) 911 prot = veth->h_vlan_encapsulated_proto; 912 913 switch (prot) { 914 case htons(ETH_P_IPV6): 915 return 6; 916 case htons(ETH_P_IP): 917 return 4; 918 default: 919 return 0; 920 } 921 } 922 923 static inline int qeth_get_ether_cast_type(struct sk_buff *skb) 924 { 925 u8 *addr = eth_hdr(skb)->h_dest; 926 927 if (is_multicast_ether_addr(addr)) 928 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST : 929 RTN_MULTICAST; 930 return RTN_UNICAST; 931 } 932 933 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv) 934 { 935 struct dst_entry *dst = skb_dst(skb); 936 struct rt6_info *rt; 937 938 rt = (struct rt6_info *) dst; 939 if (dst) 940 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0); 941 return dst; 942 } 943 944 static inline __be32 qeth_next_hop_v4_rcu(struct sk_buff *skb, 945 struct dst_entry *dst) 946 { 947 struct rtable *rt = (struct rtable *) dst; 948 949 return (rt) ? rt_nexthop(rt, ip_hdr(skb)->daddr) : ip_hdr(skb)->daddr; 950 } 951 952 static inline struct in6_addr *qeth_next_hop_v6_rcu(struct sk_buff *skb, 953 struct dst_entry *dst) 954 { 955 struct rt6_info *rt = (struct rt6_info *) dst; 956 957 if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) 958 return &rt->rt6i_gateway; 959 else 960 return &ipv6_hdr(skb)->daddr; 961 } 962 963 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv) 964 { 965 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; 966 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) || 967 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) 968 *flags |= QETH_HDR_EXT_UDP; 969 } 970 971 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, 972 struct qeth_buffer_pool_entry *entry) 973 { 974 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list); 975 } 976 977 static inline int qeth_is_diagass_supported(struct qeth_card *card, 978 enum qeth_diags_cmds cmd) 979 { 980 return card->info.diagass_support & (__u32)cmd; 981 } 982 983 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 984 enum qeth_ipa_funcs ipa_func, 985 u16 cmd_code, u32 *data, 986 enum qeth_prot_versions prot); 987 /* IPv4 variant */ 988 static inline int qeth_send_simple_setassparms(struct qeth_card *card, 989 enum qeth_ipa_funcs ipa_func, 990 u16 cmd_code, u32 *data) 991 { 992 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 993 data, QETH_PROT_IPV4); 994 } 995 996 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card, 997 enum qeth_ipa_funcs ipa_func, 998 u16 cmd_code, u32 *data) 999 { 1000 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 1001 data, QETH_PROT_IPV6); 1002 } 1003 1004 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb); 1005 1006 extern struct qeth_discipline qeth_l2_discipline; 1007 extern struct qeth_discipline qeth_l3_discipline; 1008 extern const struct ethtool_ops qeth_ethtool_ops; 1009 extern const struct ethtool_ops qeth_osn_ethtool_ops; 1010 extern const struct attribute_group *qeth_generic_attr_groups[]; 1011 extern const struct attribute_group *qeth_osn_attr_groups[]; 1012 extern const struct attribute_group qeth_device_attr_group; 1013 extern const struct attribute_group qeth_device_blkt_group; 1014 extern const struct device_type qeth_generic_devtype; 1015 1016 const char *qeth_get_cardname_short(struct qeth_card *); 1017 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count); 1018 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id); 1019 void qeth_core_free_discipline(struct qeth_card *); 1020 1021 /* exports for qeth discipline device drivers */ 1022 extern struct kmem_cache *qeth_core_header_cache; 1023 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; 1024 1025 struct net_device *qeth_clone_netdev(struct net_device *orig); 1026 struct qeth_card *qeth_get_card_by_busid(char *bus_id); 1027 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int); 1028 int qeth_threads_running(struct qeth_card *, unsigned long); 1029 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok); 1030 int qeth_stop_channel(struct qeth_channel *channel); 1031 int qeth_set_offline(struct qeth_card *card, bool resetting); 1032 1033 void qeth_print_status_message(struct qeth_card *); 1034 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, 1035 int (*reply_cb) 1036 (struct qeth_card *, struct qeth_reply *, unsigned long), 1037 void *); 1038 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 1039 enum qeth_ipa_cmds cmd_code, 1040 enum qeth_prot_versions prot, 1041 unsigned int data_length); 1042 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 1043 unsigned int length, unsigned int ccws, 1044 long timeout); 1045 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 1046 enum qeth_ipa_funcs ipa_func, 1047 u16 cmd_code, 1048 unsigned int data_length, 1049 enum qeth_prot_versions prot); 1050 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 1051 enum qeth_diags_cmds sub_cmd, 1052 unsigned int data_length); 1053 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason); 1054 void qeth_put_cmd(struct qeth_cmd_buffer *iob); 1055 1056 int qeth_schedule_recovery(struct qeth_card *card); 1057 void qeth_flush_local_addrs(struct qeth_card *card); 1058 int qeth_poll(struct napi_struct *napi, int budget); 1059 void qeth_clear_ipacmd_list(struct qeth_card *); 1060 int qeth_qdio_clear_card(struct qeth_card *, int); 1061 void qeth_clear_working_pool_list(struct qeth_card *); 1062 void qeth_drain_output_queues(struct qeth_card *card); 1063 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable); 1064 int qeth_setadpparms_change_macaddr(struct qeth_card *); 1065 void qeth_tx_timeout(struct net_device *, unsigned int txqueue); 1066 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 1067 u16 cmd_length, 1068 bool (*match)(struct qeth_cmd_buffer *iob, 1069 struct qeth_cmd_buffer *reply)); 1070 int qeth_query_switch_attributes(struct qeth_card *card, 1071 struct qeth_switch_info *sw_info); 1072 int qeth_query_card_info(struct qeth_card *card, 1073 struct carrier_info *carrier_info); 1074 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset); 1075 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 1076 struct sk_buff *skb, struct qeth_hdr *hdr, 1077 unsigned int offset, unsigned int hd_len, 1078 int elements_needed); 1079 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1080 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); 1081 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback); 1082 int qeth_configure_cq(struct qeth_card *, enum qeth_cq); 1083 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action); 1084 void qeth_trace_features(struct qeth_card *); 1085 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long); 1086 int qeth_setup_netdev(struct qeth_card *card); 1087 int qeth_set_features(struct net_device *, netdev_features_t); 1088 void qeth_enable_hw_features(struct net_device *dev); 1089 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t); 1090 netdev_features_t qeth_features_check(struct sk_buff *skb, 1091 struct net_device *dev, 1092 netdev_features_t features); 1093 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats); 1094 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count); 1095 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1096 u8 cast_type, struct net_device *sb_dev); 1097 int qeth_open(struct net_device *dev); 1098 int qeth_stop(struct net_device *dev); 1099 1100 int qeth_vm_request_mac(struct qeth_card *card); 1101 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 1102 struct qeth_qdio_out_q *queue, int ipv, 1103 void (*fill_header)(struct qeth_qdio_out_q *queue, 1104 struct qeth_hdr *hdr, struct sk_buff *skb, 1105 int ipv, unsigned int data_len)); 1106 1107 /* exports for OSN */ 1108 int qeth_osn_assist(struct net_device *, void *, int); 1109 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **, 1110 int (*assist_cb)(struct net_device *, void *), 1111 int (*data_cb)(struct sk_buff *)); 1112 void qeth_osn_deregister(struct net_device *); 1113 1114 #endif /* __QETH_CORE_H__ */ 1115