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 qeth_get_device_id(struct ccw_device * cdev)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 8U 199 #define QETH_IN_BUF_COUNT_MAX 128U 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 { 263 union { 264 struct qeth_hdr_layer2 l2; 265 struct qeth_hdr_layer3 l3; 266 } hdr; 267 } __attribute__ ((packed)); 268 269 #define QETH_QIB_PQUE_ORDER_RR 0 270 #define QETH_QIB_PQUE_UNITS_SBAL 2 271 #define QETH_QIB_PQUE_PRIO_DEFAULT 4 272 273 struct qeth_qib_parms { 274 char pcit_magic[4]; 275 u32 pcit_a; 276 u32 pcit_b; 277 u32 pcit_c; 278 char blkt_magic[4]; 279 u32 blkt_total; 280 u32 blkt_inter_packet; 281 u32 blkt_inter_packet_jumbo; 282 char pque_magic[4]; 283 u8 pque_order; 284 u8 pque_units; 285 u16 reserved; 286 u32 pque_priority[4]; 287 }; 288 289 /*TCP Segmentation Offload header*/ 290 struct qeth_hdr_ext_tso { 291 __u16 hdr_tot_len; 292 __u8 imb_hdr_no; 293 __u8 reserved; 294 __u8 hdr_type; 295 __u8 hdr_version; 296 __u16 hdr_len; 297 __u32 payload_len; 298 __u16 mss; 299 __u16 dg_hdr_len; 300 __u8 padding[16]; 301 } __attribute__ ((packed)); 302 303 struct qeth_hdr_tso { 304 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/ 305 struct qeth_hdr_ext_tso ext; 306 } __attribute__ ((packed)); 307 308 309 /* flags for qeth_hdr.flags */ 310 #define QETH_HDR_PASSTHRU 0x10 311 #define QETH_HDR_IPV6 0x80 312 #define QETH_HDR_CAST_MASK 0x07 313 enum qeth_cast_flags { 314 QETH_CAST_UNICAST = 0x06, 315 QETH_CAST_MULTICAST = 0x04, 316 QETH_CAST_BROADCAST = 0x05, 317 QETH_CAST_ANYCAST = 0x07, 318 QETH_CAST_NOCAST = 0x00, 319 }; 320 321 enum qeth_layer2_frame_flags { 322 QETH_LAYER2_FLAG_MULTICAST = 0x01, 323 QETH_LAYER2_FLAG_BROADCAST = 0x02, 324 QETH_LAYER2_FLAG_UNICAST = 0x04, 325 QETH_LAYER2_FLAG_VLAN = 0x10, 326 }; 327 328 enum qeth_header_ids { 329 QETH_HEADER_TYPE_LAYER3 = 0x01, 330 QETH_HEADER_TYPE_LAYER2 = 0x02, 331 QETH_HEADER_TYPE_L3_TSO = 0x03, 332 QETH_HEADER_TYPE_L2_TSO = 0x06, 333 QETH_HEADER_MASK_INVAL = 0x80, 334 }; 335 /* flags for qeth_hdr.ext_flags */ 336 #define QETH_HDR_EXT_VLAN_FRAME 0x01 337 #define QETH_HDR_EXT_TOKEN_ID 0x02 338 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04 339 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08 340 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10 341 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20 342 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/ 343 qeth_l2_same_vlan(struct qeth_hdr_layer2 * h1,struct qeth_hdr_layer2 * h2)344 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1, 345 struct qeth_hdr_layer2 *h2) 346 { 347 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) && 348 h1->vlan_id == h2->vlan_id; 349 } 350 qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 * h1,struct qeth_hdr_layer3 * h2)351 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1, 352 struct qeth_hdr_layer3 *h2) 353 { 354 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) && 355 h1->vlan_id == h2->vlan_id; 356 } 357 qeth_l3_same_next_hop(struct qeth_hdr_layer3 * h1,struct qeth_hdr_layer3 * h2)358 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1, 359 struct qeth_hdr_layer3 *h2) 360 { 361 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) && 362 ipv6_addr_equal(&h1->next_hop.addr, &h2->next_hop.addr); 363 } 364 365 struct qeth_local_addr { 366 struct hlist_node hnode; 367 struct rcu_head rcu; 368 struct in6_addr addr; 369 }; 370 371 enum qeth_qdio_info_states { 372 QETH_QDIO_UNINITIALIZED, 373 QETH_QDIO_ALLOCATED, 374 QETH_QDIO_ESTABLISHED, 375 QETH_QDIO_CLEANING 376 }; 377 378 struct qeth_buffer_pool_entry { 379 struct list_head list; 380 struct list_head init_list; 381 struct page *elements[QDIO_MAX_ELEMENTS_PER_BUFFER]; 382 }; 383 384 struct qeth_qdio_buffer_pool { 385 struct list_head entry_list; 386 int buf_count; 387 }; 388 389 struct qeth_qdio_buffer { 390 struct qdio_buffer *buffer; 391 /* the buffer pool entry currently associated to this buffer */ 392 struct qeth_buffer_pool_entry *pool_entry; 393 struct sk_buff *rx_skb; 394 }; 395 396 struct qeth_qdio_q { 397 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 398 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q]; 399 int next_buf_to_init; 400 }; 401 402 enum qeth_qdio_out_buffer_state { 403 /* Owned by driver, in order to be filled. */ 404 QETH_QDIO_BUF_EMPTY, 405 /* Filled by driver; owned by hardware in order to be sent. */ 406 QETH_QDIO_BUF_PRIMED, 407 }; 408 409 enum qeth_qaob_state { 410 QETH_QAOB_ISSUED, 411 QETH_QAOB_PENDING, 412 QETH_QAOB_DONE, 413 }; 414 415 struct qeth_qaob_priv1 { 416 unsigned int state; 417 u8 queue_no; 418 }; 419 420 struct qeth_qdio_out_buffer { 421 struct qdio_buffer *buffer; 422 atomic_t state; 423 int next_element_to_fill; 424 unsigned int frames; 425 unsigned int bytes; 426 struct sk_buff_head skb_list; 427 DECLARE_BITMAP(from_kmem_cache, QDIO_MAX_ELEMENTS_PER_BUFFER); 428 429 struct list_head list_entry; 430 struct qaob *aob; 431 }; 432 433 struct qeth_card; 434 435 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val)) 436 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1) 437 438 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val)) 439 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1) 440 441 struct qeth_card_stats { 442 u64 rx_bufs; 443 u64 rx_skb_csum; 444 u64 rx_sg_skbs; 445 u64 rx_sg_frags; 446 u64 rx_sg_alloc_page; 447 448 u64 rx_dropped_nomem; 449 u64 rx_dropped_notsupp; 450 u64 rx_dropped_runt; 451 452 /* rtnl_link_stats64 */ 453 u64 rx_packets; 454 u64 rx_bytes; 455 u64 rx_multicast; 456 u64 rx_length_errors; 457 u64 rx_frame_errors; 458 u64 rx_fifo_errors; 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 u64 doorbell; 475 u64 coal_frames; 476 u64 completion_irq; 477 u64 completion_yield; 478 u64 completion_timer; 479 480 /* rtnl_link_stats64 */ 481 u64 tx_packets; 482 u64 tx_bytes; 483 u64 tx_errors; 484 u64 tx_dropped; 485 }; 486 487 #define QETH_TX_MAX_COALESCED_FRAMES 1 488 #define QETH_TX_COALESCE_USECS 25 489 #define QETH_TX_TIMER_USECS 500 490 491 struct qeth_qdio_out_q { 492 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q]; 493 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q]; 494 struct list_head pending_bufs; 495 struct qeth_out_q_stats stats; 496 spinlock_t lock; 497 unsigned int priority; 498 u8 next_buf_to_fill; 499 u8 max_elements; 500 u8 queue_no; 501 u8 do_pack; 502 struct qeth_card *card; 503 /* 504 * number of buffers that are currently filled (PRIMED) 505 * -> these buffers are hardware-owned 506 */ 507 atomic_t used_buffers; 508 /* indicates whether PCI flag must be set (or if one is outstanding) */ 509 atomic_t set_pci_flags_count; 510 struct napi_struct napi; 511 struct timer_list timer; 512 struct qeth_hdr *prev_hdr; 513 unsigned int coalesced_frames; 514 u8 bulk_start; 515 u8 bulk_count; 516 u8 bulk_max; 517 518 unsigned int coalesce_usecs; 519 unsigned int max_coalesced_frames; 520 unsigned int rescan_usecs; 521 }; 522 523 #define qeth_for_each_output_queue(card, q, i) \ 524 for (i = 0; i < card->qdio.no_out_queues && \ 525 (q = card->qdio.out_qs[i]); i++) 526 527 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi) 528 qeth_tx_arm_timer(struct qeth_qdio_out_q * queue,unsigned long usecs)529 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue, 530 unsigned long usecs) 531 { 532 timer_reduce(&queue->timer, usecs_to_jiffies(usecs) + jiffies); 533 } 534 qeth_out_queue_is_full(struct qeth_qdio_out_q * queue)535 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue) 536 { 537 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q; 538 } 539 qeth_out_queue_is_empty(struct qeth_qdio_out_q * queue)540 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue) 541 { 542 return atomic_read(&queue->used_buffers) == 0; 543 } 544 545 struct qeth_qdio_info { 546 atomic_t state; 547 /* input */ 548 struct qeth_qdio_q *in_q; 549 struct qeth_qdio_q *c_q; 550 struct qeth_qdio_buffer_pool in_buf_pool; 551 struct qeth_qdio_buffer_pool init_pool; 552 int in_buf_size; 553 554 /* output */ 555 unsigned int no_out_queues; 556 struct qeth_qdio_out_q *out_qs[QETH_MAX_OUT_QUEUES]; 557 558 /* priority queueing */ 559 int do_prio_queueing; 560 int default_out_queue; 561 }; 562 563 /** 564 * channel state machine 565 */ 566 enum qeth_channel_states { 567 CH_STATE_UP, 568 CH_STATE_DOWN, 569 CH_STATE_HALTED, 570 CH_STATE_STOPPED, 571 }; 572 /** 573 * card state machine 574 */ 575 enum qeth_card_states { 576 CARD_STATE_DOWN, 577 CARD_STATE_SOFTSETUP, 578 }; 579 580 /** 581 * Protocol versions 582 */ 583 enum qeth_prot_versions { 584 QETH_PROT_NONE = 0x0000, 585 QETH_PROT_IPV4 = 0x0004, 586 QETH_PROT_IPV6 = 0x0006, 587 }; 588 589 enum qeth_cq { 590 QETH_CQ_DISABLED = 0, 591 QETH_CQ_ENABLED = 1, 592 QETH_CQ_NOTAVAILABLE = 2, 593 }; 594 595 struct qeth_ipato { 596 bool enabled; 597 bool invert4; 598 bool invert6; 599 struct list_head entries; 600 }; 601 602 struct qeth_channel { 603 struct ccw_device *ccwdev; 604 struct qeth_cmd_buffer *active_cmd; 605 enum qeth_channel_states state; 606 }; 607 608 struct qeth_reply { 609 int (*callback)(struct qeth_card *card, struct qeth_reply *reply, 610 unsigned long data); 611 void *param; 612 }; 613 614 struct qeth_cmd_buffer { 615 struct list_head list_entry; 616 struct completion done; 617 spinlock_t lock; 618 unsigned int length; 619 refcount_t ref_count; 620 struct qeth_channel *channel; 621 struct qeth_reply reply; 622 long timeout; 623 unsigned char *data; 624 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob); 625 bool (*match)(struct qeth_cmd_buffer *iob, 626 struct qeth_cmd_buffer *reply); 627 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob, 628 unsigned int data_length); 629 int rc; 630 }; 631 qeth_get_cmd(struct qeth_cmd_buffer * iob)632 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob) 633 { 634 refcount_inc(&iob->ref_count); 635 } 636 __ipa_reply(struct qeth_cmd_buffer * iob)637 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob) 638 { 639 if (!IS_IPA(iob->data)) 640 return NULL; 641 642 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 643 } 644 __ipa_cmd(struct qeth_cmd_buffer * iob)645 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob) 646 { 647 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 648 } 649 __ccw_from_cmd(struct qeth_cmd_buffer * iob)650 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob) 651 { 652 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8)); 653 } 654 655 /** 656 * OSA card related definitions 657 */ 658 struct qeth_token { 659 __u32 issuer_rm_w; 660 __u32 issuer_rm_r; 661 __u32 cm_filter_w; 662 __u32 cm_filter_r; 663 __u32 cm_connection_w; 664 __u32 cm_connection_r; 665 __u32 ulp_filter_w; 666 __u32 ulp_filter_r; 667 __u32 ulp_connection_w; 668 __u32 ulp_connection_r; 669 }; 670 671 struct qeth_seqno { 672 __u32 trans_hdr; 673 __u32 pdu_hdr; 674 __u32 pdu_hdr_ack; 675 __u16 ipa; 676 }; 677 678 struct qeth_card_blkt { 679 int time_total; 680 int inter_packet; 681 int inter_packet_jumbo; 682 }; 683 684 enum qeth_pnso_mode { 685 QETH_PNSO_NONE, 686 QETH_PNSO_BRIDGEPORT, 687 QETH_PNSO_ADDR_INFO, 688 }; 689 690 enum qeth_link_mode { 691 QETH_LINK_MODE_UNKNOWN, 692 QETH_LINK_MODE_FIBRE_SHORT, 693 QETH_LINK_MODE_FIBRE_LONG, 694 }; 695 696 struct qeth_link_info { 697 u32 speed; 698 u8 duplex; 699 u8 port; 700 enum qeth_link_mode link_mode; 701 }; 702 703 #define QETH_BROADCAST_WITH_ECHO 0x01 704 #define QETH_BROADCAST_WITHOUT_ECHO 0x02 705 struct qeth_card_info { 706 unsigned short unit_addr2; 707 unsigned short cula; 708 __u16 func_level; 709 char mcl_level[QETH_MCL_LENGTH + 1]; 710 /* doubleword below corresponds to net_if_token */ 711 u16 ddev_devno; 712 u8 cssid; 713 u8 iid; 714 u8 ssid; 715 u8 chpid; 716 u16 chid; 717 u8 ids_valid:1; /* cssid,iid,chid */ 718 u8 dev_addr_is_registered:1; 719 u8 promisc_mode:1; 720 u8 use_v1_blkt:1; 721 u8 is_vm_nic:1; 722 /* no bitfield, we take a pointer on these two: */ 723 u8 has_lp2lp_cso_v6; 724 u8 has_lp2lp_cso_v4; 725 enum qeth_pnso_mode pnso_mode; 726 enum qeth_card_types type; 727 enum qeth_link_types link_type; 728 int broadcast_capable; 729 bool layer_enforced; 730 struct qeth_card_blkt blkt; 731 __u32 diagass_support; 732 __u32 hwtrap; 733 struct qeth_link_info link_info; 734 }; 735 736 enum qeth_discipline_id { 737 QETH_DISCIPLINE_UNDETERMINED = -1, 738 QETH_DISCIPLINE_LAYER3 = 0, 739 QETH_DISCIPLINE_LAYER2 = 1, 740 }; 741 742 struct qeth_card_options { 743 struct qeth_ipa_caps ipa4; 744 struct qeth_ipa_caps ipa6; 745 struct qeth_routing_info route4; 746 struct qeth_routing_info route6; 747 struct qeth_ipa_caps adp; /* Adapter parameters */ 748 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */ 749 struct qeth_vnicc_info vnicc; /* VNICC options */ 750 enum qeth_discipline_id layer; 751 enum qeth_ipa_isolation_modes isolation; 752 int sniffer; 753 enum qeth_cq cq; 754 char hsuid[9]; 755 }; 756 757 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2) 758 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3) 759 760 /* 761 * thread bits for qeth_card thread masks 762 */ 763 enum qeth_threads { 764 QETH_RECOVER_THREAD = 1, 765 }; 766 767 struct qeth_discipline { 768 int (*setup) (struct ccwgroup_device *); 769 void (*remove) (struct ccwgroup_device *); 770 int (*set_online)(struct qeth_card *card, bool carrier_ok); 771 void (*set_offline)(struct qeth_card *card); 772 int (*control_event_handler)(struct qeth_card *card, 773 struct qeth_ipa_cmd *cmd); 774 }; 775 776 enum qeth_addr_disposition { 777 QETH_DISP_ADDR_DELETE = 0, 778 QETH_DISP_ADDR_DO_NOTHING = 1, 779 QETH_DISP_ADDR_ADD = 2, 780 }; 781 782 struct qeth_rx { 783 int b_count; 784 int b_index; 785 u8 buf_element; 786 int e_offset; 787 int qdio_err; 788 u8 bufs_refill; 789 }; 790 791 struct qeth_switch_info { 792 __u32 capabilities; 793 __u32 settings; 794 }; 795 796 struct qeth_priv { 797 unsigned int rx_copybreak; 798 unsigned int tx_wanted_queues; 799 u32 brport_hw_features; 800 u32 brport_features; 801 }; 802 803 struct qeth_card { 804 enum qeth_card_states state; 805 spinlock_t lock; 806 struct ccwgroup_device *gdev; 807 struct qeth_cmd_buffer *read_cmd; 808 struct qeth_channel read; 809 struct qeth_channel write; 810 struct qeth_channel data; 811 812 struct net_device *dev; 813 struct dentry *debugfs; 814 struct qeth_card_stats stats; 815 struct qeth_card_info info; 816 struct qeth_token token; 817 struct qeth_seqno seqno; 818 struct qeth_card_options options; 819 820 struct workqueue_struct *event_wq; 821 struct workqueue_struct *cmd_wq; 822 wait_queue_head_t wait_q; 823 824 struct mutex ip_lock; 825 /* protected by ip_lock: */ 826 DECLARE_HASHTABLE(ip_htable, 4); 827 struct qeth_ipato ipato; 828 829 DECLARE_HASHTABLE(local_addrs4, 4); 830 DECLARE_HASHTABLE(local_addrs6, 4); 831 spinlock_t local_addrs4_lock; 832 spinlock_t local_addrs6_lock; 833 DECLARE_HASHTABLE(rx_mode_addrs, 4); 834 struct work_struct rx_mode_work; 835 struct work_struct kernel_thread_starter; 836 spinlock_t thread_mask_lock; 837 unsigned long thread_start_mask; 838 unsigned long thread_allowed_mask; 839 unsigned long thread_running_mask; 840 struct list_head cmd_waiter_list; 841 /* QDIO buffer handling */ 842 struct qeth_qdio_info qdio; 843 int read_or_write_problem; 844 const struct qeth_discipline *discipline; 845 atomic_t force_alloc_skb; 846 struct service_level qeth_service_level; 847 struct qdio_ssqd_desc ssqd; 848 debug_info_t *debug; 849 struct mutex sbp_lock; 850 struct mutex conf_mutex; 851 struct mutex discipline_mutex; 852 struct napi_struct napi; 853 struct qeth_rx rx; 854 struct delayed_work buffer_reclaim_work; 855 }; 856 qeth_card_hw_is_reachable(struct qeth_card * card)857 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card) 858 { 859 return card->state == CARD_STATE_SOFTSETUP; 860 } 861 qeth_use_tx_irqs(struct qeth_card * card)862 static inline bool qeth_use_tx_irqs(struct qeth_card *card) 863 { 864 return !IS_IQD(card); 865 } 866 qeth_unlock_channel(struct qeth_card * card,struct qeth_channel * channel)867 static inline void qeth_unlock_channel(struct qeth_card *card, 868 struct qeth_channel *channel) 869 { 870 xchg(&channel->active_cmd, NULL); 871 wake_up(&card->wait_q); 872 } 873 qeth_trylock_channel(struct qeth_channel * channel,struct qeth_cmd_buffer * cmd)874 static inline bool qeth_trylock_channel(struct qeth_channel *channel, 875 struct qeth_cmd_buffer *cmd) 876 { 877 return cmpxchg(&channel->active_cmd, NULL, cmd) == NULL; 878 } 879 880 struct qeth_trap_id { 881 __u16 lparnr; 882 char vmname[8]; 883 __u8 chpid; 884 __u8 ssid; 885 __u16 devno; 886 } __packed; 887 qeth_uses_tx_prio_queueing(struct qeth_card * card)888 static inline bool qeth_uses_tx_prio_queueing(struct qeth_card *card) 889 { 890 return card->qdio.do_prio_queueing != QETH_NO_PRIO_QUEUEING; 891 } 892 qeth_tx_actual_queues(struct qeth_card * card)893 static inline unsigned int qeth_tx_actual_queues(struct qeth_card *card) 894 { 895 struct qeth_priv *priv = netdev_priv(card->dev); 896 897 if (qeth_uses_tx_prio_queueing(card)) 898 return min(card->dev->num_tx_queues, card->qdio.no_out_queues); 899 900 return min(priv->tx_wanted_queues, card->qdio.no_out_queues); 901 } 902 qeth_iqd_translate_txq(struct net_device * dev,u16 txq)903 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq) 904 { 905 if (txq == QETH_IQD_MCAST_TXQ) 906 return dev->num_tx_queues - 1; 907 if (txq == dev->num_tx_queues - 1) 908 return QETH_IQD_MCAST_TXQ; 909 return txq; 910 } 911 qeth_iqd_is_mcast_queue(struct qeth_card * card,struct qeth_qdio_out_q * queue)912 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card, 913 struct qeth_qdio_out_q *queue) 914 { 915 return qeth_iqd_translate_txq(card->dev, queue->queue_no) == 916 QETH_IQD_MCAST_TXQ; 917 } 918 qeth_scrub_qdio_buffer(struct qdio_buffer * buf,unsigned int elements)919 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf, 920 unsigned int elements) 921 { 922 unsigned int i; 923 924 for (i = 0; i < elements; i++) 925 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element)); 926 buf->element[14].sflags = 0; 927 buf->element[15].sflags = 0; 928 } 929 930 /** 931 * qeth_get_elements_for_range() - find number of SBALEs to cover range. 932 * @start: Start of the address range. 933 * @end: Address after the end of the range. 934 * 935 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 936 * the specified address range. 937 */ qeth_get_elements_for_range(addr_t start,addr_t end)938 static inline int qeth_get_elements_for_range(addr_t start, addr_t end) 939 { 940 return PFN_UP(end) - PFN_DOWN(start); 941 } 942 qeth_get_ether_cast_type(struct sk_buff * skb)943 static inline int qeth_get_ether_cast_type(struct sk_buff *skb) 944 { 945 u8 *addr = eth_hdr(skb)->h_dest; 946 947 if (is_multicast_ether_addr(addr)) 948 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST : 949 RTN_MULTICAST; 950 return RTN_UNICAST; 951 } 952 qeth_dst_check_rcu(struct sk_buff * skb,__be16 proto)953 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, 954 __be16 proto) 955 { 956 struct dst_entry *dst = skb_dst(skb); 957 struct rt6_info *rt; 958 959 rt = dst_rt6_info(dst); 960 if (dst) { 961 if (proto == htons(ETH_P_IPV6)) 962 dst = dst_check(dst, rt6_get_cookie(rt)); 963 else 964 dst = dst_check(dst, 0); 965 } 966 967 return dst; 968 } 969 qeth_next_hop_v4_rcu(struct sk_buff * skb,struct dst_entry * dst)970 static inline __be32 qeth_next_hop_v4_rcu(struct sk_buff *skb, 971 struct dst_entry *dst) 972 { 973 return (dst) ? rt_nexthop(dst_rtable(dst), ip_hdr(skb)->daddr) : 974 ip_hdr(skb)->daddr; 975 } 976 qeth_next_hop_v6_rcu(struct sk_buff * skb,struct dst_entry * dst)977 static inline struct in6_addr *qeth_next_hop_v6_rcu(struct sk_buff *skb, 978 struct dst_entry *dst) 979 { 980 struct rt6_info *rt = dst_rt6_info(dst); 981 982 if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) 983 return &rt->rt6i_gateway; 984 else 985 return &ipv6_hdr(skb)->daddr; 986 } 987 qeth_tx_csum(struct sk_buff * skb,u8 * flags,__be16 proto)988 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, __be16 proto) 989 { 990 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; 991 if ((proto == htons(ETH_P_IP) && ip_hdr(skb)->protocol == IPPROTO_UDP) || 992 (proto == htons(ETH_P_IPV6) && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) 993 *flags |= QETH_HDR_EXT_UDP; 994 } 995 qeth_put_buffer_pool_entry(struct qeth_card * card,struct qeth_buffer_pool_entry * entry)996 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, 997 struct qeth_buffer_pool_entry *entry) 998 { 999 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list); 1000 } 1001 qeth_is_diagass_supported(struct qeth_card * card,enum qeth_diags_cmds cmd)1002 static inline int qeth_is_diagass_supported(struct qeth_card *card, 1003 enum qeth_diags_cmds cmd) 1004 { 1005 return card->info.diagass_support & (__u32)cmd; 1006 } 1007 1008 int qeth_send_simple_setassparms_prot(struct qeth_card *card, 1009 enum qeth_ipa_funcs ipa_func, 1010 u16 cmd_code, u32 *data, 1011 enum qeth_prot_versions prot); 1012 /* IPv4 variant */ qeth_send_simple_setassparms(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,u32 * data)1013 static inline int qeth_send_simple_setassparms(struct qeth_card *card, 1014 enum qeth_ipa_funcs ipa_func, 1015 u16 cmd_code, u32 *data) 1016 { 1017 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 1018 data, QETH_PROT_IPV4); 1019 } 1020 qeth_send_simple_setassparms_v6(struct qeth_card * card,enum qeth_ipa_funcs ipa_func,u16 cmd_code,u32 * data)1021 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card, 1022 enum qeth_ipa_funcs ipa_func, 1023 u16 cmd_code, u32 *data) 1024 { 1025 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code, 1026 data, QETH_PROT_IPV6); 1027 } 1028 1029 extern const struct qeth_discipline qeth_l2_discipline; 1030 extern const struct qeth_discipline qeth_l3_discipline; 1031 extern const struct ethtool_ops qeth_ethtool_ops; 1032 extern const struct attribute_group *qeth_dev_groups[]; 1033 1034 const char *qeth_get_cardname_short(struct qeth_card *); 1035 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count); 1036 int qeth_setup_discipline(struct qeth_card *card, enum qeth_discipline_id disc); 1037 void qeth_remove_discipline(struct qeth_card *card); 1038 1039 /* exports for qeth discipline device drivers */ 1040 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; 1041 1042 struct net_device *qeth_clone_netdev(struct net_device *orig); 1043 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 1044 int clear_start_mask); 1045 int qeth_threads_running(struct qeth_card *, unsigned long); 1046 int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc, 1047 bool resetting); 1048 1049 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, 1050 int (*reply_cb) 1051 (struct qeth_card *, struct qeth_reply *, unsigned long), 1052 void *); 1053 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, 1054 enum qeth_ipa_cmds cmd_code, 1055 enum qeth_prot_versions prot, 1056 unsigned int data_length); 1057 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 1058 enum qeth_ipa_funcs ipa_func, 1059 u16 cmd_code, 1060 unsigned int data_length, 1061 enum qeth_prot_versions prot); 1062 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card, 1063 enum qeth_diags_cmds sub_cmd, 1064 unsigned int data_length); 1065 1066 int qeth_schedule_recovery(struct qeth_card *card); 1067 int qeth_poll(struct napi_struct *napi, int budget); 1068 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable); 1069 int qeth_setadpparms_change_macaddr(struct qeth_card *); 1070 void qeth_tx_timeout(struct net_device *, unsigned int txqueue); 1071 int qeth_query_switch_attributes(struct qeth_card *card, 1072 struct qeth_switch_info *sw_info); 1073 int qeth_query_card_info(struct qeth_card *card, 1074 struct qeth_link_info *link_info); 1075 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 1076 enum qeth_ipa_isolation_modes mode); 1077 1078 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1079 int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, 1080 void __user *data, int cmd); 1081 __printf(3, 4) 1082 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...); 1083 int qeth_configure_cq(struct qeth_card *, enum qeth_cq); 1084 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action); 1085 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long); 1086 int qeth_set_features(struct net_device *, netdev_features_t); 1087 void qeth_enable_hw_features(struct net_device *dev); 1088 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t); 1089 netdev_features_t qeth_features_check(struct sk_buff *skb, 1090 struct net_device *dev, 1091 netdev_features_t features); 1092 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats); 1093 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count); 1094 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1095 u8 cast_type, struct net_device *sb_dev); 1096 u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb, 1097 struct net_device *sb_dev); 1098 int qeth_open(struct net_device *dev); 1099 int qeth_stop(struct net_device *dev); 1100 1101 int qeth_vm_request_mac(struct qeth_card *card); 1102 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, 1103 struct qeth_qdio_out_q *queue, __be16 proto, 1104 void (*fill_header)(struct qeth_qdio_out_q *queue, 1105 struct qeth_hdr *hdr, struct sk_buff *skb, 1106 __be16 proto, unsigned int data_len)); 1107 1108 #endif /* __QETH_CORE_H__ */ 1109