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 /*****************************************************************************/ 182 /* QDIO queue and buffer handling */ 183 /*****************************************************************************/ 184 #define QETH_MAX_QUEUES 4 185 #define QETH_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */ 186 #define QETH_IQD_MCAST_TXQ 0 187 #define QETH_IQD_MIN_UCAST_TXQ 1 188 189 #define QETH_RX_COPYBREAK (PAGE_SIZE >> 1) 190 #define QETH_IN_BUF_SIZE_DEFAULT 65536 191 #define QETH_IN_BUF_COUNT_DEFAULT 64 192 #define QETH_IN_BUF_COUNT_HSDEFAULT 128 193 #define QETH_IN_BUF_COUNT_MIN 8 194 #define QETH_IN_BUF_COUNT_MAX 128 195 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12) 196 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \ 197 ((card)->qdio.in_buf_pool.buf_count / 2) 198 199 /* buffers we have to be behind before we get a PCI */ 200 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1) 201 /*enqueued free buffers left before we get a PCI*/ 202 #define QETH_PCI_THRESHOLD_B(card) 0 203 /*not used unless the microcode gets patched*/ 204 #define QETH_PCI_TIMER_VALUE(card) 3 205 206 /* priority queing */ 207 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING 208 #define QETH_DEFAULT_QUEUE 2 209 #define QETH_NO_PRIO_QUEUEING 0 210 #define QETH_PRIO_Q_ING_PREC 1 211 #define QETH_PRIO_Q_ING_TOS 2 212 #define QETH_PRIO_Q_ING_SKB 3 213 #define QETH_PRIO_Q_ING_VLAN 4 214 #define QETH_PRIO_Q_ING_FIXED 5 215 216 /* Packing */ 217 #define QETH_LOW_WATERMARK_PACK 2 218 #define QETH_HIGH_WATERMARK_PACK 5 219 #define QETH_WATERMARK_PACK_FUZZ 1 220 221 struct qeth_hdr_layer3 { 222 __u8 id; 223 __u8 flags; 224 __u16 inbound_checksum; /*TSO:__u16 seqno */ 225 __u32 token; /*TSO: __u32 reserved */ 226 __u16 length; 227 __u8 vlan_prio; 228 __u8 ext_flags; 229 __u16 vlan_id; 230 __u16 frame_offset; 231 union { 232 /* TX: */ 233 struct in6_addr ipv6_addr; 234 struct ipv4 { 235 u8 res[12]; 236 u32 addr; 237 } ipv4; 238 /* RX: */ 239 struct rx { 240 u8 res1[2]; 241 u8 src_mac[6]; 242 u8 res2[4]; 243 u16 vlan_id; 244 u8 res3[2]; 245 } rx; 246 } next_hop; 247 }; 248 249 struct qeth_hdr_layer2 { 250 __u8 id; 251 __u8 flags[3]; 252 __u8 port_no; 253 __u8 hdr_length; 254 __u16 pkt_length; 255 __u16 seq_no; 256 __u16 vlan_id; 257 __u32 reserved; 258 __u8 reserved2[16]; 259 } __attribute__ ((packed)); 260 261 struct qeth_hdr_osn { 262 __u8 id; 263 __u8 reserved; 264 __u16 seq_no; 265 __u16 reserved2; 266 __u16 control_flags; 267 __u16 pdu_length; 268 __u8 reserved3[18]; 269 __u32 ccid; 270 } __attribute__ ((packed)); 271 272 struct qeth_hdr { 273 union { 274 struct qeth_hdr_layer2 l2; 275 struct qeth_hdr_layer3 l3; 276 struct qeth_hdr_osn osn; 277 } hdr; 278 } __attribute__ ((packed)); 279 280 /*TCP Segmentation Offload header*/ 281 struct qeth_hdr_ext_tso { 282 __u16 hdr_tot_len; 283 __u8 imb_hdr_no; 284 __u8 reserved; 285 __u8 hdr_type; 286 __u8 hdr_version; 287 __u16 hdr_len; 288 __u32 payload_len; 289 __u16 mss; 290 __u16 dg_hdr_len; 291 __u8 padding[16]; 292 } __attribute__ ((packed)); 293 294 struct qeth_hdr_tso { 295 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/ 296 struct qeth_hdr_ext_tso ext; 297 } __attribute__ ((packed)); 298 299 300 /* flags for qeth_hdr.flags */ 301 #define QETH_HDR_PASSTHRU 0x10 302 #define QETH_HDR_IPV6 0x80 303 #define QETH_HDR_CAST_MASK 0x07 304 enum qeth_cast_flags { 305 QETH_CAST_UNICAST = 0x06, 306 QETH_CAST_MULTICAST = 0x04, 307 QETH_CAST_BROADCAST = 0x05, 308 QETH_CAST_ANYCAST = 0x07, 309 QETH_CAST_NOCAST = 0x00, 310 }; 311 312 enum qeth_layer2_frame_flags { 313 QETH_LAYER2_FLAG_MULTICAST = 0x01, 314 QETH_LAYER2_FLAG_BROADCAST = 0x02, 315 QETH_LAYER2_FLAG_UNICAST = 0x04, 316 QETH_LAYER2_FLAG_VLAN = 0x10, 317 }; 318 319 enum qeth_header_ids { 320 QETH_HEADER_TYPE_LAYER3 = 0x01, 321 QETH_HEADER_TYPE_LAYER2 = 0x02, 322 QETH_HEADER_TYPE_L3_TSO = 0x03, 323 QETH_HEADER_TYPE_OSN = 0x04, 324 QETH_HEADER_TYPE_L2_TSO = 0x06, 325 QETH_HEADER_MASK_INVAL = 0x80, 326 }; 327 /* flags for qeth_hdr.ext_flags */ 328 #define QETH_HDR_EXT_VLAN_FRAME 0x01 329 #define QETH_HDR_EXT_TOKEN_ID 0x02 330 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04 331 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08 332 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10 333 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20 334 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/ 335 336 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1, 337 struct qeth_hdr_layer2 *h2) 338 { 339 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) && 340 h1->vlan_id == h2->vlan_id; 341 } 342 343 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1, 344 struct qeth_hdr_layer3 *h2) 345 { 346 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) && 347 h1->vlan_id == h2->vlan_id; 348 } 349 350 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1, 351 struct qeth_hdr_layer3 *h2) 352 { 353 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) && 354 ipv6_addr_equal(&h1->next_hop.ipv6_addr, 355 &h2->next_hop.ipv6_addr); 356 } 357 358 enum qeth_qdio_info_states { 359 QETH_QDIO_UNINITIALIZED, 360 QETH_QDIO_ALLOCATED, 361 QETH_QDIO_ESTABLISHED, 362 QETH_QDIO_CLEANING 363 }; 364 365 struct qeth_buffer_pool_entry { 366 struct list_head list; 367 struct list_head init_list; 368 struct page *elements[QDIO_MAX_ELEMENTS_PER_BUFFER]; 369 }; 370 371 struct qeth_qdio_buffer_pool { 372 struct list_head entry_list; 373 int buf_count; 374 }; 375 376 struct qeth_qdio_buffer { 377 struct qdio_buffer *buffer; 378 /* the buffer pool entry currently associated to this buffer */ 379 struct qeth_buffer_pool_entry *pool_entry; 380 struct sk_buff *rx_skb; 381 }; 382 383 struct qeth_qdio_q { 384 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 385 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q]; 386 int next_buf_to_init; 387 }; 388 389 enum qeth_qdio_out_buffer_state { 390 /* Owned by driver, in order to be filled. */ 391 QETH_QDIO_BUF_EMPTY, 392 /* Filled by driver; owned by hardware in order to be sent. */ 393 QETH_QDIO_BUF_PRIMED, 394 /* Identified to be pending in TPQ. */ 395 QETH_QDIO_BUF_PENDING, 396 /* Found in completion queue. */ 397 QETH_QDIO_BUF_IN_CQ, 398 /* Handled via transfer pending / completion queue. */ 399 QETH_QDIO_BUF_HANDLED_DELAYED, 400 }; 401 402 struct qeth_qdio_out_buffer { 403 struct qdio_buffer *buffer; 404 atomic_t state; 405 int next_element_to_fill; 406 unsigned int frames; 407 unsigned int bytes; 408 struct sk_buff_head skb_list; 409 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER]; 410 411 struct qeth_qdio_out_q *q; 412 struct qeth_qdio_out_buffer *next_pending; 413 }; 414 415 struct qeth_card; 416 417 enum qeth_out_q_states { 418 QETH_OUT_Q_UNLOCKED, 419 QETH_OUT_Q_LOCKED, 420 QETH_OUT_Q_LOCKED_FLUSH, 421 }; 422 423 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val)) 424 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1) 425 426 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val)) 427 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1) 428 429 struct qeth_card_stats { 430 u64 rx_bufs; 431 u64 rx_skb_csum; 432 u64 rx_sg_skbs; 433 u64 rx_sg_frags; 434 u64 rx_sg_alloc_page; 435 436 u64 rx_dropped_nomem; 437 u64 rx_dropped_notsupp; 438 u64 rx_dropped_runt; 439 440 /* rtnl_link_stats64 */ 441 u64 rx_packets; 442 u64 rx_bytes; 443 u64 rx_multicast; 444 u64 rx_length_errors; 445 u64 rx_frame_errors; 446 u64 rx_fifo_errors; 447 }; 448 449 struct qeth_out_q_stats { 450 u64 bufs; 451 u64 bufs_pack; 452 u64 buf_elements; 453 u64 skbs_pack; 454 u64 skbs_sg; 455 u64 skbs_csum; 456 u64 skbs_tso; 457 u64 skbs_linearized; 458 u64 skbs_linearized_fail; 459 u64 tso_bytes; 460 u64 packing_mode_switch; 461 u64 stopped; 462 u64 doorbell; 463 u64 coal_frames; 464 u64 completion_yield; 465 u64 completion_timer; 466 467 /* rtnl_link_stats64 */ 468 u64 tx_packets; 469 u64 tx_bytes; 470 u64 tx_errors; 471 u64 tx_dropped; 472 }; 473 474 #define QETH_TX_MAX_COALESCED_FRAMES 1 475 #define QETH_TX_COALESCE_USECS 25 476 #define QETH_TX_TIMER_USECS 500 477 478 struct qeth_qdio_out_q { 479 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 480 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q]; 481 struct qdio_outbuf_state *bufstates; /* convenience pointer */ 482 struct qeth_out_q_stats stats; 483 u8 next_buf_to_fill; 484 u8 max_elements; 485 u8 queue_no; 486 u8 do_pack; 487 struct qeth_card *card; 488 atomic_t state; 489 /* 490 * number of buffers that are currently filled (PRIMED) 491 * -> these buffers are hardware-owned 492 */ 493 atomic_t used_buffers; 494 /* indicates whether PCI flag must be set (or if one is outstanding) */ 495 atomic_t set_pci_flags_count; 496 struct napi_struct napi; 497 struct timer_list timer; 498 struct qeth_hdr *prev_hdr; 499 unsigned int coalesced_frames; 500 u8 bulk_start; 501 u8 bulk_count; 502 u8 bulk_max; 503 504 unsigned int coalesce_usecs; 505 unsigned int max_coalesced_frames; 506 }; 507 508 #define qeth_for_each_output_queue(card, q, i) \ 509 for (i = 0; i < card->qdio.no_out_queues && \ 510 (q = card->qdio.out_qs[i]); i++) 511 512 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi) 513 514 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue, 515 unsigned long usecs) 516 { 517 timer_reduce(&queue->timer, usecs_to_jiffies(usecs) + jiffies); 518 } 519 520 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue) 521 { 522 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q; 523 } 524 525 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue) 526 { 527 return atomic_read(&queue->used_buffers) == 0; 528 } 529 530 struct qeth_qdio_info { 531 atomic_t state; 532 /* input */ 533 int no_in_queues; 534 struct qeth_qdio_q *in_q; 535 struct qeth_qdio_q *c_q; 536 struct qeth_qdio_buffer_pool in_buf_pool; 537 struct qeth_qdio_buffer_pool init_pool; 538 int in_buf_size; 539 540 /* output */ 541 int no_out_queues; 542 struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES]; 543 struct qdio_outbuf_state *out_bufstates; 544 545 /* priority queueing */ 546 int do_prio_queueing; 547 int default_out_queue; 548 }; 549 550 /** 551 * channel state machine 552 */ 553 enum qeth_channel_states { 554 CH_STATE_UP, 555 CH_STATE_DOWN, 556 CH_STATE_HALTED, 557 CH_STATE_STOPPED, 558 }; 559 /** 560 * card state machine 561 */ 562 enum qeth_card_states { 563 CARD_STATE_DOWN, 564 CARD_STATE_SOFTSETUP, 565 }; 566 567 /** 568 * Protocol versions 569 */ 570 enum qeth_prot_versions { 571 QETH_PROT_NONE = 0x0000, 572 QETH_PROT_IPV4 = 0x0004, 573 QETH_PROT_IPV6 = 0x0006, 574 }; 575 576 enum qeth_cq { 577 QETH_CQ_DISABLED = 0, 578 QETH_CQ_ENABLED = 1, 579 QETH_CQ_NOTAVAILABLE = 2, 580 }; 581 582 struct qeth_ipato { 583 bool enabled; 584 bool invert4; 585 bool invert6; 586 struct list_head entries; 587 }; 588 589 struct qeth_channel { 590 struct ccw_device *ccwdev; 591 struct qeth_cmd_buffer *active_cmd; 592 enum qeth_channel_states state; 593 atomic_t irq_pending; 594 }; 595 596 struct qeth_reply { 597 int (*callback)(struct qeth_card *card, struct qeth_reply *reply, 598 unsigned long data); 599 void *param; 600 }; 601 602 struct qeth_cmd_buffer { 603 struct list_head list; 604 struct completion done; 605 spinlock_t lock; 606 unsigned int length; 607 refcount_t ref_count; 608 struct qeth_channel *channel; 609 struct qeth_reply reply; 610 long timeout; 611 unsigned char *data; 612 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob); 613 bool (*match)(struct qeth_cmd_buffer *iob, 614 struct qeth_cmd_buffer *reply); 615 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob, 616 unsigned int data_length); 617 int rc; 618 }; 619 620 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob) 621 { 622 refcount_inc(&iob->ref_count); 623 } 624 625 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob) 626 { 627 if (!IS_IPA(iob->data)) 628 return NULL; 629 630 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 631 } 632 633 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob) 634 { 635 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 636 } 637 638 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob) 639 { 640 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8)); 641 } 642 643 static inline bool qeth_trylock_channel(struct qeth_channel *channel) 644 { 645 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0; 646 } 647 648 /** 649 * OSA card related definitions 650 */ 651 struct qeth_token { 652 __u32 issuer_rm_w; 653 __u32 issuer_rm_r; 654 __u32 cm_filter_w; 655 __u32 cm_filter_r; 656 __u32 cm_connection_w; 657 __u32 cm_connection_r; 658 __u32 ulp_filter_w; 659 __u32 ulp_filter_r; 660 __u32 ulp_connection_w; 661 __u32 ulp_connection_r; 662 }; 663 664 struct qeth_seqno { 665 __u32 trans_hdr; 666 __u32 pdu_hdr; 667 __u32 pdu_hdr_ack; 668 __u16 ipa; 669 }; 670 671 struct qeth_card_blkt { 672 int time_total; 673 int inter_packet; 674 int inter_packet_jumbo; 675 }; 676 677 #define QETH_BROADCAST_WITH_ECHO 0x01 678 #define QETH_BROADCAST_WITHOUT_ECHO 0x02 679 struct qeth_card_info { 680 unsigned short unit_addr2; 681 unsigned short cula; 682 u8 chpid; 683 __u16 func_level; 684 char mcl_level[QETH_MCL_LENGTH + 1]; 685 u8 dev_addr_is_registered:1; 686 u8 open_when_online:1; 687 u8 promisc_mode:1; 688 u8 use_v1_blkt:1; 689 u8 is_vm_nic:1; 690 enum qeth_card_types type; 691 enum qeth_link_types link_type; 692 int broadcast_capable; 693 bool layer_enforced; 694 struct qeth_card_blkt blkt; 695 __u32 diagass_support; 696 __u32 hwtrap; 697 }; 698 699 enum qeth_discipline_id { 700 QETH_DISCIPLINE_UNDETERMINED = -1, 701 QETH_DISCIPLINE_LAYER3 = 0, 702 QETH_DISCIPLINE_LAYER2 = 1, 703 }; 704 705 struct qeth_card_options { 706 struct qeth_ipa_caps ipa4; 707 struct qeth_ipa_caps ipa6; 708 struct qeth_routing_info route4; 709 struct qeth_routing_info route6; 710 struct qeth_ipa_caps adp; /* Adapter parameters */ 711 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */ 712 struct qeth_vnicc_info vnicc; /* VNICC options */ 713 int fake_broadcast; 714 enum qeth_discipline_id layer; 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 u8 buf_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 struct qeth_priv { 774 unsigned int rx_copybreak; 775 }; 776 777 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT 778 779 struct qeth_card { 780 enum qeth_card_states state; 781 spinlock_t lock; 782 struct ccwgroup_device *gdev; 783 struct qeth_cmd_buffer *read_cmd; 784 struct qeth_channel read; 785 struct qeth_channel write; 786 struct qeth_channel data; 787 788 struct net_device *dev; 789 struct qeth_card_stats stats; 790 struct qeth_card_info info; 791 struct qeth_token token; 792 struct qeth_seqno seqno; 793 struct qeth_card_options options; 794 795 struct workqueue_struct *event_wq; 796 struct workqueue_struct *cmd_wq; 797 wait_queue_head_t wait_q; 798 DECLARE_HASHTABLE(mac_htable, 4); 799 DECLARE_HASHTABLE(ip_htable, 4); 800 struct mutex ip_lock; 801 DECLARE_HASHTABLE(ip_mc_htable, 4); 802 struct work_struct rx_mode_work; 803 struct work_struct kernel_thread_starter; 804 spinlock_t thread_mask_lock; 805 unsigned long thread_start_mask; 806 unsigned long thread_allowed_mask; 807 unsigned long thread_running_mask; 808 struct qeth_ipato ipato; 809 struct list_head cmd_waiter_list; 810 /* QDIO buffer handling */ 811 struct qeth_qdio_info qdio; 812 int read_or_write_problem; 813 struct qeth_osn_info osn_info; 814 struct qeth_discipline *discipline; 815 atomic_t force_alloc_skb; 816 struct service_level qeth_service_level; 817 struct qdio_ssqd_desc ssqd; 818 debug_info_t *debug; 819 struct mutex sbp_lock; 820 struct mutex conf_mutex; 821 struct mutex discipline_mutex; 822 struct napi_struct napi; 823 struct qeth_rx rx; 824 struct delayed_work buffer_reclaim_work; 825 int reclaim_index; 826 struct work_struct close_dev_work; 827 }; 828 829 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card) 830 { 831 return card->state == CARD_STATE_SOFTSETUP; 832 } 833 834 static inline void qeth_unlock_channel(struct qeth_card *card, 835 struct qeth_channel *channel) 836 { 837 atomic_set(&channel->irq_pending, 0); 838 wake_up(&card->wait_q); 839 } 840 841 struct qeth_trap_id { 842 __u16 lparnr; 843 char vmname[8]; 844 __u8 chpid; 845 __u8 ssid; 846 __u16 devno; 847 } __packed; 848 849 /*some helper functions*/ 850 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "") 851 852 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq) 853 { 854 if (txq == QETH_IQD_MCAST_TXQ) 855 return dev->num_tx_queues - 1; 856 if (txq == dev->num_tx_queues - 1) 857 return QETH_IQD_MCAST_TXQ; 858 return txq; 859 } 860 861 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card, 862 struct qeth_qdio_out_q *queue) 863 { 864 return qeth_iqd_translate_txq(card->dev, queue->queue_no) == 865 QETH_IQD_MCAST_TXQ; 866 } 867 868 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf, 869 unsigned int elements) 870 { 871 unsigned int i; 872 873 for (i = 0; i < elements; i++) 874 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element)); 875 buf->element[14].sflags = 0; 876 buf->element[15].sflags = 0; 877 } 878 879 /** 880 * qeth_get_elements_for_range() - find number of SBALEs to cover range. 881 * @start: Start of the address range. 882 * @end: Address after the end of the range. 883 * 884 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 885 * the specified address range. 886 */ 887 static inline int qeth_get_elements_for_range(addr_t start, addr_t end) 888 { 889 return PFN_UP(end) - PFN_DOWN(start); 890 } 891 892 static inline int qeth_get_ip_version(struct sk_buff *skb) 893 { 894 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 895 __be16 prot = veth->h_vlan_proto; 896 897 if (prot == htons(ETH_P_8021Q)) 898 prot = veth->h_vlan_encapsulated_proto; 899 900 switch (prot) { 901 case htons(ETH_P_IPV6): 902 return 6; 903 case htons(ETH_P_IP): 904 return 4; 905 default: 906 return 0; 907 } 908 } 909 910 static inline int qeth_get_ether_cast_type(struct sk_buff *skb) 911 { 912 u8 *addr = eth_hdr(skb)->h_dest; 913 914 if (is_multicast_ether_addr(addr)) 915 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST : 916 RTN_MULTICAST; 917 return RTN_UNICAST; 918 } 919 920 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv) 921 { 922 struct dst_entry *dst = skb_dst(skb); 923 struct rt6_info *rt; 924 925 rt = (struct rt6_info *) dst; 926 if (dst) 927 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0); 928 return dst; 929 } 930 931 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv) 932 { 933 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; 934 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) || 935 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) 936 *flags |= QETH_HDR_EXT_UDP; 937 } 938 939 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, 940 struct qeth_buffer_pool_entry *entry) 941 { 942 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list); 943 } 944 945 static inline int qeth_is_diagass_supported(struct qeth_card *card, 946 enum qeth_diags_cmds cmd) 947 { 948 return card->info.diagass_support & (__u32)cmd; 949 } 950 951 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 952 enum qeth_ipa_funcs ipa_func, 953 u16 cmd_code, u32 *data, 954 enum qeth_prot_versions prot); 955 /* IPv4 variant */ 956 static inline int qeth_send_simple_setassparms(struct qeth_card *card, 957 enum qeth_ipa_funcs ipa_func, 958 u16 cmd_code, u32 *data) 959 { 960 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 961 data, QETH_PROT_IPV4); 962 } 963 964 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card, 965 enum qeth_ipa_funcs ipa_func, 966 u16 cmd_code, u32 *data) 967 { 968 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 969 data, QETH_PROT_IPV6); 970 } 971 972 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb); 973 974 extern struct qeth_discipline qeth_l2_discipline; 975 extern struct qeth_discipline qeth_l3_discipline; 976 extern const struct ethtool_ops qeth_ethtool_ops; 977 extern const struct ethtool_ops qeth_osn_ethtool_ops; 978 extern const struct attribute_group *qeth_generic_attr_groups[]; 979 extern const struct attribute_group *qeth_osn_attr_groups[]; 980 extern const struct attribute_group qeth_device_attr_group; 981 extern const struct attribute_group qeth_device_blkt_group; 982 extern const struct device_type qeth_generic_devtype; 983 984 const char *qeth_get_cardname_short(struct qeth_card *); 985 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count); 986 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id); 987 void qeth_core_free_discipline(struct qeth_card *); 988 989 /* exports for qeth discipline device drivers */ 990 extern struct kmem_cache *qeth_core_header_cache; 991 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; 992 993 struct net_device *qeth_clone_netdev(struct net_device *orig); 994 struct qeth_card *qeth_get_card_by_busid(char *bus_id); 995 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int); 996 int qeth_threads_running(struct qeth_card *, unsigned long); 997 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok); 998 int qeth_stop_channel(struct qeth_channel *channel); 999 int qeth_set_offline(struct qeth_card *card, bool resetting); 1000 1001 void qeth_print_status_message(struct qeth_card *); 1002 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, 1003 int (*reply_cb) 1004 (struct qeth_card *, struct qeth_reply *, unsigned long), 1005 void *); 1006 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 1007 enum qeth_ipa_cmds cmd_code, 1008 enum qeth_prot_versions prot, 1009 unsigned int data_length); 1010 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, 1011 unsigned int length, unsigned int ccws, 1012 long timeout); 1013 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 1014 enum qeth_ipa_funcs ipa_func, 1015 u16 cmd_code, 1016 unsigned int data_length, 1017 enum qeth_prot_versions prot); 1018 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 1019 enum qeth_diags_cmds sub_cmd, 1020 unsigned int data_length); 1021 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason); 1022 void qeth_put_cmd(struct qeth_cmd_buffer *iob); 1023 1024 void qeth_schedule_recovery(struct qeth_card *); 1025 int qeth_poll(struct napi_struct *napi, int budget); 1026 void qeth_clear_ipacmd_list(struct qeth_card *); 1027 int qeth_qdio_clear_card(struct qeth_card *, int); 1028 void qeth_clear_working_pool_list(struct qeth_card *); 1029 void qeth_drain_output_queues(struct qeth_card *card); 1030 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable); 1031 int qeth_setadpparms_change_macaddr(struct qeth_card *); 1032 void qeth_tx_timeout(struct net_device *, unsigned int txqueue); 1033 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 1034 u16 cmd_length, 1035 bool (*match)(struct qeth_cmd_buffer *iob, 1036 struct qeth_cmd_buffer *reply)); 1037 int qeth_query_switch_attributes(struct qeth_card *card, 1038 struct qeth_switch_info *sw_info); 1039 int qeth_query_card_info(struct qeth_card *card, 1040 struct carrier_info *carrier_info); 1041 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset); 1042 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 1043 struct sk_buff *skb, struct qeth_hdr *hdr, 1044 unsigned int offset, unsigned int hd_len, 1045 int elements_needed); 1046 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1047 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); 1048 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback); 1049 int qeth_configure_cq(struct qeth_card *, enum qeth_cq); 1050 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action); 1051 void qeth_trace_features(struct qeth_card *); 1052 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long); 1053 int qeth_setup_netdev(struct qeth_card *card); 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 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count); 1062 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1063 u8 cast_type, struct net_device *sb_dev); 1064 int qeth_open(struct net_device *dev); 1065 int qeth_stop(struct net_device *dev); 1066 1067 int qeth_vm_request_mac(struct qeth_card *card); 1068 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 1069 struct qeth_qdio_out_q *queue, int ipv, 1070 void (*fill_header)(struct qeth_qdio_out_q *queue, 1071 struct qeth_hdr *hdr, struct sk_buff *skb, 1072 int ipv, unsigned int data_len)); 1073 1074 /* exports for OSN */ 1075 int qeth_osn_assist(struct net_device *, void *, int); 1076 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **, 1077 int (*assist_cb)(struct net_device *, void *), 1078 int (*data_cb)(struct sk_buff *)); 1079 void qeth_osn_deregister(struct net_device *); 1080 1081 #endif /* __QETH_CORE_H__ */ 1082