drivers/s390/net/qeth_core.h

   1 /*
   2  *  drivers/s390/net/qeth_core.h
   3  *
   4  *    Copyright IBM Corp. 2007
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #ifndef __QETH_CORE_H__
  12 #define __QETH_CORE_H__
  13
  14 #include <linux/if.h>
  15 #include <linux/if_arp.h>
  16 #include <linux/if_tr.h>
  17 #include <linux/trdevice.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/if_vlan.h>
  20 #include <linux/ctype.h>
  21 #include <linux/in6.h>
  22 #include <linux/bitops.h>
  23 #include <linux/seq_file.h>
  24 #include <linux/ethtool.h>
  25
  26 #include <net/ipv6.h>
  27 #include <net/if_inet6.h>
  28 #include <net/addrconf.h>
  29
  30 #include <asm/debug.h>
  31 #include <asm/qdio.h>
  32 #include <asm/ccwdev.h>
  33 #include <asm/ccwgroup.h>
  34 #include <asm/sysinfo.h>
  35
  36 #include "qeth_core_mpc.h"
  37
  38 /**
  39  * Debug Facility stuff
  40  */
  41 enum qeth_dbf_names {
  42         QETH_DBF_SETUP,
  43         QETH_DBF_MSG,
  44         QETH_DBF_CTRL,
  45         QETH_DBF_INFOS  /* must be last element */
  46 };
  47
  48 struct qeth_dbf_info {
  49         char name[DEBUG_MAX_NAME_LEN];
  50         int pages;
  51         int areas;
  52         int len;
  53         int level;
  54         struct debug_view *view;
  55         debug_info_t *id;
  56 };
  57
  58 #define QETH_DBF_CTRL_LEN 256
  59
  60 #define QETH_DBF_TEXT(name, level, text) \
  61         debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
  62
  63 #define QETH_DBF_HEX(name, level, addr, len) \
  64         debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
  65
  66 #define QETH_DBF_MESSAGE(level, text...) \
  67         debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
  68
  69 #define QETH_DBF_TEXT_(name, level, text...) \
  70         qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
  71
  72 #define QETH_CARD_TEXT(card, level, text) \
  73         debug_text_event(card->debug, level, text)
  74
  75 #define QETH_CARD_HEX(card, level, addr, len) \
  76         debug_event(card->debug, level, (void *)(addr), len)
  77
  78 #define QETH_CARD_MESSAGE(card, text...) \
  79         debug_sprintf_event(card->debug, level, text)
  80
  81 #define QETH_CARD_TEXT_(card, level, text...) \
  82         qeth_dbf_longtext(card->debug, level, text)
  83
  84 #define SENSE_COMMAND_REJECT_BYTE 0
  85 #define SENSE_COMMAND_REJECT_FLAG 0x80
  86 #define SENSE_RESETTING_EVENT_BYTE 1
  87 #define SENSE_RESETTING_EVENT_FLAG 0x80
  88
  89 /*
  90  * Common IO related definitions
  91  */
  92 #define CARD_RDEV(card) card->read.ccwdev
  93 #define CARD_WDEV(card) card->write.ccwdev
  94 #define CARD_DDEV(card) card->data.ccwdev
  95 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
  96 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
  97 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
  98 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
  99 #define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
 100
 101 /**
 102  * card stuff
 103  */
 104 struct qeth_perf_stats {
 105         unsigned int bufs_rec;
 106         unsigned int bufs_sent;
 107
 108         unsigned int skbs_sent_pack;
 109         unsigned int bufs_sent_pack;
 110
 111         unsigned int sc_dp_p;
 112         unsigned int sc_p_dp;
 113         /* qdio_cq_handler: number of times called, time spent in */
 114         __u64 cq_start_time;
 115         unsigned int cq_cnt;
 116         unsigned int cq_time;
 117         /* qdio_input_handler: number of times called, time spent in */
 118         __u64 inbound_start_time;
 119         unsigned int inbound_cnt;
 120         unsigned int inbound_time;
 121         /* qeth_send_packet: number of times called, time spent in */
 122         __u64 outbound_start_time;
 123         unsigned int outbound_cnt;
 124         unsigned int outbound_time;
 125         /* qdio_output_handler: number of times called, time spent in */
 126         __u64 outbound_handler_start_time;
 127         unsigned int outbound_handler_cnt;
 128         unsigned int outbound_handler_time;
 129         /* number of calls to and time spent in do_QDIO for inbound queue */
 130         __u64 inbound_do_qdio_start_time;
 131         unsigned int inbound_do_qdio_cnt;
 132         unsigned int inbound_do_qdio_time;
 133         /* number of calls to and time spent in do_QDIO for outbound queues */
 134         __u64 outbound_do_qdio_start_time;
 135         unsigned int outbound_do_qdio_cnt;
 136         unsigned int outbound_do_qdio_time;
 137         unsigned int large_send_bytes;
 138         unsigned int large_send_cnt;
 139         unsigned int sg_skbs_sent;
 140         unsigned int sg_frags_sent;
 141         /* initial values when measuring starts */
 142         unsigned long initial_rx_packets;
 143         unsigned long initial_tx_packets;
 144         /* inbound scatter gather data */
 145         unsigned int sg_skbs_rx;
 146         unsigned int sg_frags_rx;
 147         unsigned int sg_alloc_page_rx;
 148         unsigned int tx_csum;
 149         unsigned int tx_lin;
 150 };
 151
 152 /* Routing stuff */
 153 struct qeth_routing_info {
 154         enum qeth_routing_types type;
 155 };
 156
 157 /* IPA stuff */
 158 struct qeth_ipa_info {
 159         __u32 supported_funcs;
 160         __u32 enabled_funcs;
 161 };
 162
 163 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
 164                 enum qeth_ipa_funcs func)
 165 {
 166         return (ipa->supported_funcs & func);
 167 }
 168
 169 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 170                 enum qeth_ipa_funcs func)
 171 {
 172         return (ipa->supported_funcs & ipa->enabled_funcs & func);
 173 }
 174
 175 #define qeth_adp_supported(c, f) \
 176         qeth_is_ipa_supported(&c->options.adp, f)
 177 #define qeth_adp_enabled(c, f) \
 178         qeth_is_ipa_enabled(&c->options.adp, f)
 179 #define qeth_is_supported(c, f) \
 180         qeth_is_ipa_supported(&c->options.ipa4, f)
 181 #define qeth_is_enabled(c, f) \
 182         qeth_is_ipa_enabled(&c->options.ipa4, f)
 183 #define qeth_is_supported6(c, f) \
 184         qeth_is_ipa_supported(&c->options.ipa6, f)
 185 #define qeth_is_enabled6(c, f) \
 186         qeth_is_ipa_enabled(&c->options.ipa6, f)
 187 #define qeth_is_ipafunc_supported(c, prot, f) \
 188          ((prot == QETH_PROT_IPV6) ? \
 189                 qeth_is_supported6(c, f) : qeth_is_supported(c, f))
 190 #define qeth_is_ipafunc_enabled(c, prot, f) \
 191          ((prot == QETH_PROT_IPV6) ? \
 192                 qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
 193
 194 #define QETH_IDX_FUNC_LEVEL_OSD          0x0101
 195 #define QETH_IDX_FUNC_LEVEL_IQD          0x4108
 196
 197 #define QETH_MODELLIST_ARRAY \
 198         {{0x1731, 0x01, 0x1732, QETH_CARD_TYPE_OSD, QETH_MAX_QUEUES, 0}, \
 199          {0x1731, 0x05, 0x1732, QETH_CARD_TYPE_IQD, QETH_MAX_QUEUES, 0x103}, \
 200          {0x1731, 0x06, 0x1732, QETH_CARD_TYPE_OSN, QETH_MAX_QUEUES, 0}, \
 201          {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSM, QETH_MAX_QUEUES, 0}, \
 202          {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSX, QETH_MAX_QUEUES, 0}, \
 203          {0, 0, 0, 0, 0, 0} }
 204 #define QETH_CU_TYPE_IND        0
 205 #define QETH_CU_MODEL_IND       1
 206 #define QETH_DEV_TYPE_IND       2
 207 #define QETH_DEV_MODEL_IND      3
 208 #define QETH_QUEUE_NO_IND       4
 209 #define QETH_MULTICAST_IND      5
 210
 211 #define QETH_REAL_CARD          1
 212 #define QETH_VLAN_CARD          2
 213 #define QETH_BUFSIZE            4096
 214
 215 /**
 216  * some more defs
 217  */
 218 #define QETH_TX_TIMEOUT         100 * HZ
 219 #define QETH_RCD_TIMEOUT        60 * HZ
 220 #define QETH_RECLAIM_WORK_TIME  HZ
 221 #define QETH_HEADER_SIZE        32
 222 #define QETH_MAX_PORTNO         15
 223
 224 /*IPv6 address autoconfiguration stuff*/
 225 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 226 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 227
 228 /*****************************************************************************/
 229 /* QDIO queue and buffer handling                                            */
 230 /*****************************************************************************/
 231 #define QETH_MAX_QUEUES 4
 232 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 233 #define QETH_IN_BUF_COUNT_DEFAULT 64
 234 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
 235 #define QETH_IN_BUF_COUNT_MIN 8
 236 #define QETH_IN_BUF_COUNT_MAX 128
 237 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 238 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 239                 ((card)->ssqd.qdioac1 & AC1_SIGA_INPUT_NEEDED ? 1 : \
 240                  ((card)->qdio.in_buf_pool.buf_count / 2))
 241
 242 /* buffers we have to be behind before we get a PCI */
 243 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 244 /*enqueued free buffers left before we get a PCI*/
 245 #define QETH_PCI_THRESHOLD_B(card) 0
 246 /*not used unless the microcode gets patched*/
 247 #define QETH_PCI_TIMER_VALUE(card) 3
 248
 249 /* priority queing */
 250 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 251 #define QETH_DEFAULT_QUEUE    2
 252 #define QETH_NO_PRIO_QUEUEING 0
 253 #define QETH_PRIO_Q_ING_PREC  1
 254 #define QETH_PRIO_Q_ING_TOS   2
 255 #define IP_TOS_LOWDELAY 0x10
 256 #define IP_TOS_HIGHTHROUGHPUT 0x08
 257 #define IP_TOS_HIGHRELIABILITY 0x04
 258 #define IP_TOS_NOTIMPORTANT 0x02
 259
 260 /* Packing */
 261 #define QETH_LOW_WATERMARK_PACK  2
 262 #define QETH_HIGH_WATERMARK_PACK 5
 263 #define QETH_WATERMARK_PACK_FUZZ 1
 264
 265 #define QETH_IP_HEADER_SIZE 40
 266
 267 /* large receive scatter gather copy break */
 268 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
 269 #define QETH_RX_PULL_LEN 256
 270
 271 struct qeth_hdr_layer3 {
 272         __u8  id;
 273         __u8  flags;
 274         __u16 inbound_checksum; /*TSO:__u16 seqno */
 275         __u32 token;            /*TSO: __u32 reserved */
 276         __u16 length;
 277         __u8  vlan_prio;
 278         __u8  ext_flags;
 279         __u16 vlan_id;
 280         __u16 frame_offset;
 281         __u8  dest_addr[16];
 282 } __attribute__ ((packed));
 283
 284 struct qeth_hdr_layer2 {
 285         __u8 id;
 286         __u8 flags[3];
 287         __u8 port_no;
 288         __u8 hdr_length;
 289         __u16 pkt_length;
 290         __u16 seq_no;
 291         __u16 vlan_id;
 292         __u32 reserved;
 293         __u8 reserved2[16];
 294 } __attribute__ ((packed));
 295
 296 struct qeth_hdr_osn {
 297         __u8 id;
 298         __u8 reserved;
 299         __u16 seq_no;
 300         __u16 reserved2;
 301         __u16 control_flags;
 302         __u16 pdu_length;
 303         __u8 reserved3[18];
 304         __u32 ccid;
 305 } __attribute__ ((packed));
 306
 307 struct qeth_hdr {
 308         union {
 309                 struct qeth_hdr_layer2 l2;
 310                 struct qeth_hdr_layer3 l3;
 311                 struct qeth_hdr_osn    osn;
 312         } hdr;
 313 } __attribute__ ((packed));
 314
 315 /*TCP Segmentation Offload header*/
 316 struct qeth_hdr_ext_tso {
 317         __u16 hdr_tot_len;
 318         __u8  imb_hdr_no;
 319         __u8  reserved;
 320         __u8  hdr_type;
 321         __u8  hdr_version;
 322         __u16 hdr_len;
 323         __u32 payload_len;
 324         __u16 mss;
 325         __u16 dg_hdr_len;
 326         __u8  padding[16];
 327 } __attribute__ ((packed));
 328
 329 struct qeth_hdr_tso {
 330         struct qeth_hdr hdr;    /*hdr->hdr.l3.xxx*/
 331         struct qeth_hdr_ext_tso ext;
 332 } __attribute__ ((packed));
 333
 334
 335 /* flags for qeth_hdr.flags */
 336 #define QETH_HDR_PASSTHRU 0x10
 337 #define QETH_HDR_IPV6     0x80
 338 #define QETH_HDR_CAST_MASK 0x07
 339 enum qeth_cast_flags {
 340         QETH_CAST_UNICAST   = 0x06,
 341         QETH_CAST_MULTICAST = 0x04,
 342         QETH_CAST_BROADCAST = 0x05,
 343         QETH_CAST_ANYCAST   = 0x07,
 344         QETH_CAST_NOCAST    = 0x00,
 345 };
 346
 347 enum qeth_layer2_frame_flags {
 348         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 349         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 350         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 351         QETH_LAYER2_FLAG_VLAN      = 0x10,
 352 };
 353
 354 enum qeth_header_ids {
 355         QETH_HEADER_TYPE_LAYER3 = 0x01,
 356         QETH_HEADER_TYPE_LAYER2 = 0x02,
 357         QETH_HEADER_TYPE_TSO    = 0x03,
 358         QETH_HEADER_TYPE_OSN    = 0x04,
 359 };
 360 /* flags for qeth_hdr.ext_flags */
 361 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 362 #define QETH_HDR_EXT_TOKEN_ID         0x02
 363 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 364 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 365 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 366 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 367 #define QETH_HDR_EXT_UDP              0x40 /*bit off for TCP*/
 368
 369 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
 370 {
 371         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
 372 }
 373
 374 enum qeth_qdio_buffer_states {
 375         /*
 376          * inbound: read out by driver; owned by hardware in order to be filled
 377          * outbound: owned by driver in order to be filled
 378          */
 379         QETH_QDIO_BUF_EMPTY,
 380         /*
 381          * inbound: filled by hardware; owned by driver in order to be read out
 382          * outbound: filled by driver; owned by hardware in order to be sent
 383          */
 384         QETH_QDIO_BUF_PRIMED,
 385         /*
 386          * inbound: not applicable
 387          * outbound: identified to be pending in TPQ
 388          */
 389         QETH_QDIO_BUF_PENDING,
 390         /*
 391          * inbound: not applicable
 392          * outbound: found in completion queue
 393          */
 394         QETH_QDIO_BUF_IN_CQ,
 395         /*
 396          * inbound: not applicable
 397          * outbound: handled via transfer pending / completion queue
 398          */
 399         QETH_QDIO_BUF_HANDLED_DELAYED,
 400 };
 401
 402 enum qeth_qdio_info_states {
 403         QETH_QDIO_UNINITIALIZED,
 404         QETH_QDIO_ALLOCATED,
 405         QETH_QDIO_ESTABLISHED,
 406         QETH_QDIO_CLEANING
 407 };
 408
 409 struct qeth_buffer_pool_entry {
 410         struct list_head list;
 411         struct list_head init_list;
 412         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 413 };
 414
 415 struct qeth_qdio_buffer_pool {
 416         struct list_head entry_list;
 417         int buf_count;
 418 };
 419
 420 struct qeth_qdio_buffer {
 421         struct qdio_buffer *buffer;
 422         /* the buffer pool entry currently associated to this buffer */
 423         struct qeth_buffer_pool_entry *pool_entry;
 424         struct sk_buff *rx_skb;
 425 };
 426
 427 struct qeth_qdio_q {
 428         struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 429         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 430         int next_buf_to_init;
 431 } __attribute__ ((aligned(256)));
 432
 433 struct qeth_qdio_out_buffer {
 434         struct qdio_buffer *buffer;
 435         atomic_t state;
 436         int next_element_to_fill;
 437         struct sk_buff_head skb_list;
 438         int is_header[16];
 439
 440         struct qaob *aob;
 441         struct qeth_qdio_out_q *q;
 442         struct qeth_qdio_out_buffer *next_pending;
 443 };
 444
 445 struct qeth_card;
 446
 447 enum qeth_out_q_states {
 448        QETH_OUT_Q_UNLOCKED,
 449        QETH_OUT_Q_LOCKED,
 450        QETH_OUT_Q_LOCKED_FLUSH,
 451 };
 452
 453 struct qeth_qdio_out_q {
 454         struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 455         struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
 456         struct qdio_outbuf_state *bufstates; /* convenience pointer */
 457         int queue_no;
 458         struct qeth_card *card;
 459         atomic_t state;
 460         int do_pack;
 461         /*
 462          * index of buffer to be filled by driver; state EMPTY or PACKING
 463          */
 464         int next_buf_to_fill;
 465         /*
 466          * number of buffers that are currently filled (PRIMED)
 467          * -> these buffers are hardware-owned
 468          */
 469         atomic_t used_buffers;
 470         /* indicates whether PCI flag must be set (or if one is outstanding) */
 471         atomic_t set_pci_flags_count;
 472 } __attribute__ ((aligned(256)));
 473
 474 struct qeth_qdio_info {
 475         atomic_t state;
 476         /* input */
 477         int no_in_queues;
 478         struct qeth_qdio_q *in_q;
 479         struct qeth_qdio_q *c_q;
 480         struct qeth_qdio_buffer_pool in_buf_pool;
 481         struct qeth_qdio_buffer_pool init_pool;
 482         int in_buf_size;
 483
 484         /* output */
 485         int no_out_queues;
 486         struct qeth_qdio_out_q **out_qs;
 487         struct qdio_outbuf_state *out_bufstates;
 488
 489         /* priority queueing */
 490         int do_prio_queueing;
 491         int default_out_queue;
 492 };
 493
 494 enum qeth_send_errors {
 495         QETH_SEND_ERROR_NONE,
 496         QETH_SEND_ERROR_LINK_FAILURE,
 497         QETH_SEND_ERROR_RETRY,
 498         QETH_SEND_ERROR_KICK_IT,
 499 };
 500
 501 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
 502 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
 503 /* tr mc mac is longer, but that will be enough to detect mc frames */
 504 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
 505 #define QETH_TR_MAC_C        0x0300 /* canonical */
 506
 507 #define DEFAULT_ADD_HHLEN 0
 508 #define MAX_ADD_HHLEN 1024
 509
 510 /**
 511  * buffer stuff for read channel
 512  */
 513 #define QETH_CMD_BUFFER_NO      8
 514
 515 /**
 516  *  channel state machine
 517  */
 518 enum qeth_channel_states {
 519         CH_STATE_UP,
 520         CH_STATE_DOWN,
 521         CH_STATE_ACTIVATING,
 522         CH_STATE_HALTED,
 523         CH_STATE_STOPPED,
 524         CH_STATE_RCD,
 525         CH_STATE_RCD_DONE,
 526 };
 527 /**
 528  * card state machine
 529  */
 530 enum qeth_card_states {
 531         CARD_STATE_DOWN,
 532         CARD_STATE_HARDSETUP,
 533         CARD_STATE_SOFTSETUP,
 534         CARD_STATE_UP,
 535         CARD_STATE_RECOVER,
 536 };
 537
 538 /**
 539  * Protocol versions
 540  */
 541 enum qeth_prot_versions {
 542         QETH_PROT_IPV4 = 0x0004,
 543         QETH_PROT_IPV6 = 0x0006,
 544 };
 545
 546 enum qeth_ip_types {
 547         QETH_IP_TYPE_NORMAL,
 548         QETH_IP_TYPE_VIPA,
 549         QETH_IP_TYPE_RXIP,
 550         QETH_IP_TYPE_DEL_ALL_MC,
 551 };
 552
 553 enum qeth_cmd_buffer_state {
 554         BUF_STATE_FREE,
 555         BUF_STATE_LOCKED,
 556         BUF_STATE_PROCESSED,
 557 };
 558
 559 enum qeth_cq {
 560         QETH_CQ_DISABLED = 0,
 561         QETH_CQ_ENABLED = 1,
 562         QETH_CQ_NOTAVAILABLE = 2,
 563 };
 564
 565 struct qeth_ipato {
 566         int enabled;
 567         int invert4;
 568         int invert6;
 569         struct list_head entries;
 570 };
 571
 572 struct qeth_channel;
 573
 574 struct qeth_cmd_buffer {
 575         enum qeth_cmd_buffer_state state;
 576         struct qeth_channel *channel;
 577         unsigned char *data;
 578         int rc;
 579         void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
 580 };
 581
 582 /**
 583  * definition of a qeth channel, used for read and write
 584  */
 585 struct qeth_channel {
 586         enum qeth_channel_states state;
 587         struct ccw1 ccw;
 588         spinlock_t iob_lock;
 589         wait_queue_head_t wait_q;
 590         struct tasklet_struct irq_tasklet;
 591         struct ccw_device *ccwdev;
 592 /*command buffer for control data*/
 593         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 594         atomic_t irq_pending;
 595         int io_buf_no;
 596         int buf_no;
 597 };
 598
 599 /**
 600  *  OSA card related definitions
 601  */
 602 struct qeth_token {
 603         __u32 issuer_rm_w;
 604         __u32 issuer_rm_r;
 605         __u32 cm_filter_w;
 606         __u32 cm_filter_r;
 607         __u32 cm_connection_w;
 608         __u32 cm_connection_r;
 609         __u32 ulp_filter_w;
 610         __u32 ulp_filter_r;
 611         __u32 ulp_connection_w;
 612         __u32 ulp_connection_r;
 613 };
 614
 615 struct qeth_seqno {
 616         __u32 trans_hdr;
 617         __u32 pdu_hdr;
 618         __u32 pdu_hdr_ack;
 619         __u16 ipa;
 620         __u32 pkt_seqno;
 621 };
 622
 623 struct qeth_reply {
 624         struct list_head list;
 625         wait_queue_head_t wait_q;
 626         int (*callback)(struct qeth_card *, struct qeth_reply *,
 627                 unsigned long);
 628         u32 seqno;
 629         unsigned long offset;
 630         atomic_t received;
 631         int rc;
 632         void *param;
 633         struct qeth_card *card;
 634         atomic_t refcnt;
 635 };
 636
 637
 638 struct qeth_card_blkt {
 639         int time_total;
 640         int inter_packet;
 641         int inter_packet_jumbo;
 642 };
 643
 644 #define QETH_BROADCAST_WITH_ECHO    0x01
 645 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
 646 #define QETH_LAYER2_MAC_READ        0x01
 647 #define QETH_LAYER2_MAC_REGISTERED  0x02
 648 struct qeth_card_info {
 649         unsigned short unit_addr2;
 650         unsigned short cula;
 651         unsigned short chpid;
 652         __u16 func_level;
 653         char mcl_level[QETH_MCL_LENGTH + 1];
 654         int guestlan;
 655         int mac_bits;
 656         int portname_required;
 657         int portno;
 658         char portname[9];
 659         enum qeth_card_types type;
 660         enum qeth_link_types link_type;
 661         int is_multicast_different;
 662         int initial_mtu;
 663         int max_mtu;
 664         int broadcast_capable;
 665         int unique_id;
 666         struct qeth_card_blkt blkt;
 667         __u32 csum_mask;
 668         __u32 tx_csum_mask;
 669         enum qeth_ipa_promisc_modes promisc_mode;
 670         __u32 diagass_support;
 671         __u32 hwtrap;
 672 };
 673
 674 struct qeth_card_options {
 675         struct qeth_routing_info route4;
 676         struct qeth_ipa_info ipa4;
 677         struct qeth_ipa_info adp; /*Adapter parameters*/
 678         struct qeth_routing_info route6;
 679         struct qeth_ipa_info ipa6;
 680         int broadcast_mode;
 681         int macaddr_mode;
 682         int fake_broadcast;
 683         int add_hhlen;
 684         int layer2;
 685         int performance_stats;
 686         int rx_sg_cb;
 687         enum qeth_ipa_isolation_modes isolation;
 688         int sniffer;
 689         enum qeth_cq cq;
 690         char hsuid[9];
 691 };
 692
 693 /*
 694  * thread bits for qeth_card thread masks
 695  */
 696 enum qeth_threads {
 697         QETH_RECOVER_THREAD = 1,
 698 };
 699
 700 struct qeth_osn_info {
 701         int (*assist_cb)(struct net_device *dev, void *data);
 702         int (*data_cb)(struct sk_buff *skb);
 703 };
 704
 705 enum qeth_discipline_id {
 706         QETH_DISCIPLINE_LAYER3 = 0,
 707         QETH_DISCIPLINE_LAYER2 = 1,
 708 };
 709
 710 struct qeth_discipline {
 711         void (*start_poll)(struct ccw_device *, int, unsigned long);
 712         qdio_handler_t *input_handler;
 713         qdio_handler_t *output_handler;
 714         int (*recover)(void *ptr);
 715         struct ccwgroup_driver *ccwgdriver;
 716 };
 717
 718 struct qeth_vlan_vid {
 719         struct list_head list;
 720         unsigned short vid;
 721 };
 722
 723 struct qeth_mc_mac {
 724         struct list_head list;
 725         __u8 mc_addr[MAX_ADDR_LEN];
 726         unsigned char mc_addrlen;
 727         int is_vmac;
 728 };
 729
 730 struct qeth_rx {
 731         int b_count;
 732         int b_index;
 733         struct qdio_buffer_element *b_element;
 734         int e_offset;
 735         int qdio_err;
 736 };
 737
 738 #define QETH_NAPI_WEIGHT 128
 739
 740 struct qeth_card {
 741         struct list_head list;
 742         enum qeth_card_states state;
 743         int lan_online;
 744         spinlock_t lock;
 745         struct ccwgroup_device *gdev;
 746         struct qeth_channel read;
 747         struct qeth_channel write;
 748         struct qeth_channel data;
 749
 750         struct net_device *dev;
 751         struct net_device_stats stats;
 752
 753         struct qeth_card_info info;
 754         struct qeth_token token;
 755         struct qeth_seqno seqno;
 756         struct qeth_card_options options;
 757
 758         wait_queue_head_t wait_q;
 759         spinlock_t vlanlock;
 760         spinlock_t mclock;
 761         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 762         struct list_head vid_list;
 763         struct list_head mc_list;
 764         struct work_struct kernel_thread_starter;
 765         spinlock_t thread_mask_lock;
 766         unsigned long thread_start_mask;
 767         unsigned long thread_allowed_mask;
 768         unsigned long thread_running_mask;
 769         spinlock_t ip_lock;
 770         struct list_head ip_list;
 771         struct list_head *ip_tbd_list;
 772         struct qeth_ipato ipato;
 773         struct list_head cmd_waiter_list;
 774         /* QDIO buffer handling */
 775         struct qeth_qdio_info qdio;
 776         struct qeth_perf_stats perf_stats;
 777         int read_or_write_problem;
 778         struct qeth_osn_info osn_info;
 779         struct qeth_discipline discipline;
 780         atomic_t force_alloc_skb;
 781         struct service_level qeth_service_level;
 782         struct qdio_ssqd_desc ssqd;
 783         debug_info_t *debug;
 784         struct mutex conf_mutex;
 785         struct mutex discipline_mutex;
 786         struct napi_struct napi;
 787         struct qeth_rx rx;
 788         struct delayed_work buffer_reclaim_work;
 789         int reclaim_index;
 790 };
 791
 792 struct qeth_card_list_struct {
 793         struct list_head list;
 794         rwlock_t rwlock;
 795 };
 796
 797 struct qeth_trap_id {
 798         __u16 lparnr;
 799         char vmname[8];
 800         __u8 chpid;
 801         __u8 ssid;
 802         __u16 devno;
 803 } __packed;
 804
 805 /*some helper functions*/
 806 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 807
 808 static inline struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
 809 {
 810         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
 811                 dev_get_drvdata(&cdev->dev))->dev);
 812         return card;
 813 }
 814
 815 static inline int qeth_get_micros(void)
 816 {
 817         return (int) (get_clock() >> 12);
 818 }
 819
 820 static inline int qeth_get_ip_version(struct sk_buff *skb)
 821 {
 822         struct ethhdr *ehdr = (struct ethhdr *)skb->data;
 823         switch (ehdr->h_proto) {
 824         case ETH_P_IPV6:
 825                 return 6;
 826         case ETH_P_IP:
 827                 return 4;
 828         default:
 829                 return 0;
 830         }
 831 }
 832
 833 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
 834                 struct qeth_buffer_pool_entry *entry)
 835 {
 836         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
 837 }
 838
 839 static inline int qeth_is_diagass_supported(struct qeth_card *card,
 840                 enum qeth_diags_cmds cmd)
 841 {
 842         return card->info.diagass_support & (__u32)cmd;
 843 }
 844
 845 extern struct ccwgroup_driver qeth_l2_ccwgroup_driver;
 846 extern struct ccwgroup_driver qeth_l3_ccwgroup_driver;
 847 const char *qeth_get_cardname_short(struct qeth_card *);
 848 int qeth_realloc_buffer_pool(struct qeth_card *, int);
 849 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
 850 void qeth_core_free_discipline(struct qeth_card *);
 851 int qeth_core_create_device_attributes(struct device *);
 852 void qeth_core_remove_device_attributes(struct device *);
 853 int qeth_core_create_osn_attributes(struct device *);
 854 void qeth_core_remove_osn_attributes(struct device *);
 855 void qeth_buffer_reclaim_work(struct work_struct *);
 856
 857 /* exports for qeth discipline device drivers */
 858 extern struct qeth_card_list_struct qeth_core_card_list;
 859 extern struct kmem_cache *qeth_core_header_cache;
 860 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
 861
 862 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
 863 int qeth_threads_running(struct qeth_card *, unsigned long);
 864 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
 865 int qeth_do_run_thread(struct qeth_card *, unsigned long);
 866 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
 867 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
 868 int qeth_core_hardsetup_card(struct qeth_card *);
 869 void qeth_print_status_message(struct qeth_card *);
 870 int qeth_init_qdio_queues(struct qeth_card *);
 871 int qeth_send_startlan(struct qeth_card *);
 872 int qeth_send_stoplan(struct qeth_card *);
 873 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
 874                   int (*reply_cb)
 875                   (struct qeth_card *, struct qeth_reply *, unsigned long),
 876                   void *);
 877 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
 878                         enum qeth_ipa_cmds, enum qeth_prot_versions);
 879 int qeth_query_setadapterparms(struct qeth_card *);
 880 int qeth_check_qdio_errors(struct qeth_card *, struct qdio_buffer *,
 881                 unsigned int, const char *);
 882 void qeth_queue_input_buffer(struct qeth_card *, int);
 883 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
 884                 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
 885                 struct qeth_hdr **);
 886 void qeth_schedule_recovery(struct qeth_card *);
 887 void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long);
 888 void qeth_qdio_input_handler(struct ccw_device *,
 889                 unsigned int, unsigned int, int,
 890                 int, unsigned long);
 891 void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
 892                         int, int, int, unsigned long);
 893 void qeth_clear_ipacmd_list(struct qeth_card *);
 894 int qeth_qdio_clear_card(struct qeth_card *, int);
 895 void qeth_clear_working_pool_list(struct qeth_card *);
 896 void qeth_clear_cmd_buffers(struct qeth_channel *);
 897 void qeth_clear_qdio_buffers(struct qeth_card *);
 898 void qeth_setadp_promisc_mode(struct qeth_card *);
 899 struct net_device_stats *qeth_get_stats(struct net_device *);
 900 int qeth_change_mtu(struct net_device *, int);
 901 int qeth_setadpparms_change_macaddr(struct qeth_card *);
 902 void qeth_tx_timeout(struct net_device *);
 903 void qeth_prepare_control_data(struct qeth_card *, int,
 904                                 struct qeth_cmd_buffer *);
 905 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
 906 void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
 907 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
 908 int qeth_mdio_read(struct net_device *, int, int);
 909 int qeth_snmp_command(struct qeth_card *, char __user *);
 910 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *, __u32, __u32);
 911 int qeth_default_setadapterparms_cb(struct qeth_card *, struct qeth_reply *,
 912                                         unsigned long);
 913 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
 914         int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
 915         void *reply_param);
 916 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
 917 int qeth_get_elements_no(struct qeth_card *, void *, struct sk_buff *, int);
 918 int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *,
 919                         struct sk_buff *, struct qeth_hdr *, int, int, int);
 920 int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
 921                     struct sk_buff *, struct qeth_hdr *, int);
 922 int qeth_core_get_sset_count(struct net_device *, int);
 923 void qeth_core_get_ethtool_stats(struct net_device *,
 924                                 struct ethtool_stats *, u64 *);
 925 void qeth_core_get_strings(struct net_device *, u32, u8 *);
 926 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
 927 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
 928 int qeth_core_ethtool_get_settings(struct net_device *, struct ethtool_cmd *);
 929 int qeth_set_access_ctrl_online(struct qeth_card *card);
 930 int qeth_hdr_chk_and_bounce(struct sk_buff *, int);
 931 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
 932 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
 933 int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
 934
 935 /* exports for OSN */
 936 int qeth_osn_assist(struct net_device *, void *, int);
 937 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
 938                 int (*assist_cb)(struct net_device *, void *),
 939                 int (*data_cb)(struct sk_buff *));
 940 void qeth_osn_deregister(struct net_device *);
 941
 942 #endif /* __QETH_CORE_H__ */