drivers/s390/net/qeth_core.h

   1 /*
   2  *    Copyright IBM Corp. 2007
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #ifndef __QETH_CORE_H__
  10 #define __QETH_CORE_H__
  11
  12 #include <linux/if.h>
  13 #include <linux/if_arp.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/if_vlan.h>
  16 #include <linux/ctype.h>
  17 #include <linux/in6.h>
  18 #include <linux/bitops.h>
  19 #include <linux/seq_file.h>
  20 #include <linux/ethtool.h>
  21 #include <linux/hashtable.h>
  22 #include <linux/ip.h>
  23
  24 #include <net/ipv6.h>
  25 #include <net/if_inet6.h>
  26 #include <net/addrconf.h>
  27
  28 #include <asm/debug.h>
  29 #include <asm/qdio.h>
  30 #include <asm/ccwdev.h>
  31 #include <asm/ccwgroup.h>
  32 #include <asm/sysinfo.h>
  33
  34 #include "qeth_core_mpc.h"
  35
  36 /**
  37  * Debug Facility stuff
  38  */
  39 enum qeth_dbf_names {
  40         QETH_DBF_SETUP,
  41         QETH_DBF_MSG,
  42         QETH_DBF_CTRL,
  43         QETH_DBF_INFOS  /* must be last element */
  44 };
  45
  46 struct qeth_dbf_info {
  47         char name[DEBUG_MAX_NAME_LEN];
  48         int pages;
  49         int areas;
  50         int len;
  51         int level;
  52         struct debug_view *view;
  53         debug_info_t *id;
  54 };
  55
  56 #define QETH_DBF_CTRL_LEN 256
  57
  58 #define QETH_DBF_TEXT(name, level, text) \
  59         debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
  60
  61 #define QETH_DBF_HEX(name, level, addr, len) \
  62         debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
  63
  64 #define QETH_DBF_MESSAGE(level, text...) \
  65         debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
  66
  67 #define QETH_DBF_TEXT_(name, level, text...) \
  68         qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
  69
  70 #define QETH_CARD_TEXT(card, level, text) \
  71         debug_text_event(card->debug, level, text)
  72
  73 #define QETH_CARD_HEX(card, level, addr, len) \
  74         debug_event(card->debug, level, (void *)(addr), len)
  75
  76 #define QETH_CARD_MESSAGE(card, text...) \
  77         debug_sprintf_event(card->debug, level, text)
  78
  79 #define QETH_CARD_TEXT_(card, level, text...) \
  80         qeth_dbf_longtext(card->debug, level, text)
  81
  82 #define SENSE_COMMAND_REJECT_BYTE 0
  83 #define SENSE_COMMAND_REJECT_FLAG 0x80
  84 #define SENSE_RESETTING_EVENT_BYTE 1
  85 #define SENSE_RESETTING_EVENT_FLAG 0x80
  86
  87 /*
  88  * Common IO related definitions
  89  */
  90 #define CARD_RDEV(card) card->read.ccwdev
  91 #define CARD_WDEV(card) card->write.ccwdev
  92 #define CARD_DDEV(card) card->data.ccwdev
  93 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
  94 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
  95 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
  96 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
  97 #define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
  98
  99 /**
 100  * card stuff
 101  */
 102 struct qeth_perf_stats {
 103         unsigned int bufs_rec;
 104         unsigned int bufs_sent;
 105
 106         unsigned int skbs_sent_pack;
 107         unsigned int bufs_sent_pack;
 108
 109         unsigned int sc_dp_p;
 110         unsigned int sc_p_dp;
 111         /* qdio_cq_handler: number of times called, time spent in */
 112         __u64 cq_start_time;
 113         unsigned int cq_cnt;
 114         unsigned int cq_time;
 115         /* qdio_input_handler: number of times called, time spent in */
 116         __u64 inbound_start_time;
 117         unsigned int inbound_cnt;
 118         unsigned int inbound_time;
 119         /* qeth_send_packet: number of times called, time spent in */
 120         __u64 outbound_start_time;
 121         unsigned int outbound_cnt;
 122         unsigned int outbound_time;
 123         /* qdio_output_handler: number of times called, time spent in */
 124         __u64 outbound_handler_start_time;
 125         unsigned int outbound_handler_cnt;
 126         unsigned int outbound_handler_time;
 127         /* number of calls to and time spent in do_QDIO for inbound queue */
 128         __u64 inbound_do_qdio_start_time;
 129         unsigned int inbound_do_qdio_cnt;
 130         unsigned int inbound_do_qdio_time;
 131         /* number of calls to and time spent in do_QDIO for outbound queues */
 132         __u64 outbound_do_qdio_start_time;
 133         unsigned int outbound_do_qdio_cnt;
 134         unsigned int outbound_do_qdio_time;
 135         unsigned int large_send_bytes;
 136         unsigned int large_send_cnt;
 137         unsigned int sg_skbs_sent;
 138         unsigned int sg_frags_sent;
 139         /* initial values when measuring starts */
 140         unsigned long initial_rx_packets;
 141         unsigned long initial_tx_packets;
 142         /* inbound scatter gather data */
 143         unsigned int sg_skbs_rx;
 144         unsigned int sg_frags_rx;
 145         unsigned int sg_alloc_page_rx;
 146         unsigned int tx_csum;
 147         unsigned int tx_lin;
 148         unsigned int tx_linfail;
 149 };
 150
 151 /* Routing stuff */
 152 struct qeth_routing_info {
 153         enum qeth_routing_types type;
 154 };
 155
 156 /* IPA stuff */
 157 struct qeth_ipa_info {
 158         __u32 supported_funcs;
 159         __u32 enabled_funcs;
 160 };
 161
 162 /* SETBRIDGEPORT stuff */
 163 enum qeth_sbp_roles {
 164         QETH_SBP_ROLE_NONE      = 0,
 165         QETH_SBP_ROLE_PRIMARY   = 1,
 166         QETH_SBP_ROLE_SECONDARY = 2,
 167 };
 168
 169 enum qeth_sbp_states {
 170         QETH_SBP_STATE_INACTIVE = 0,
 171         QETH_SBP_STATE_STANDBY  = 1,
 172         QETH_SBP_STATE_ACTIVE   = 2,
 173 };
 174
 175 #define QETH_SBP_HOST_NOTIFICATION 1
 176
 177 struct qeth_sbp_info {
 178         __u32 supported_funcs;
 179         enum qeth_sbp_roles role;
 180         __u32 hostnotification:1;
 181         __u32 reflect_promisc:1;
 182         __u32 reflect_promisc_primary:1;
 183 };
 184
 185 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
 186                 enum qeth_ipa_funcs func)
 187 {
 188         return (ipa->supported_funcs & func);
 189 }
 190
 191 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 192                 enum qeth_ipa_funcs func)
 193 {
 194         return (ipa->supported_funcs & ipa->enabled_funcs & func);
 195 }
 196
 197 #define qeth_adp_supported(c, f) \
 198         qeth_is_ipa_supported(&c->options.adp, f)
 199 #define qeth_adp_enabled(c, f) \
 200         qeth_is_ipa_enabled(&c->options.adp, f)
 201 #define qeth_is_supported(c, f) \
 202         qeth_is_ipa_supported(&c->options.ipa4, f)
 203 #define qeth_is_enabled(c, f) \
 204         qeth_is_ipa_enabled(&c->options.ipa4, f)
 205 #define qeth_is_supported6(c, f) \
 206         qeth_is_ipa_supported(&c->options.ipa6, f)
 207 #define qeth_is_enabled6(c, f) \
 208         qeth_is_ipa_enabled(&c->options.ipa6, f)
 209 #define qeth_is_ipafunc_supported(c, prot, f) \
 210          ((prot == QETH_PROT_IPV6) ? \
 211                 qeth_is_supported6(c, f) : qeth_is_supported(c, f))
 212 #define qeth_is_ipafunc_enabled(c, prot, f) \
 213          ((prot == QETH_PROT_IPV6) ? \
 214                 qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
 215
 216 #define QETH_IDX_FUNC_LEVEL_OSD          0x0101
 217 #define QETH_IDX_FUNC_LEVEL_IQD          0x4108
 218
 219 #define QETH_MODELLIST_ARRAY \
 220         {{0x1731, 0x01, 0x1732, QETH_CARD_TYPE_OSD, QETH_MAX_QUEUES, 0}, \
 221          {0x1731, 0x05, 0x1732, QETH_CARD_TYPE_IQD, QETH_MAX_QUEUES, 0x103}, \
 222          {0x1731, 0x06, 0x1732, QETH_CARD_TYPE_OSN, QETH_MAX_QUEUES, 0}, \
 223          {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSM, QETH_MAX_QUEUES, 0}, \
 224          {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSX, QETH_MAX_QUEUES, 0}, \
 225          {0, 0, 0, 0, 0, 0} }
 226 #define QETH_CU_TYPE_IND        0
 227 #define QETH_CU_MODEL_IND       1
 228 #define QETH_DEV_TYPE_IND       2
 229 #define QETH_DEV_MODEL_IND      3
 230 #define QETH_QUEUE_NO_IND       4
 231 #define QETH_MULTICAST_IND      5
 232
 233 #define QETH_REAL_CARD          1
 234 #define QETH_VLAN_CARD          2
 235 #define QETH_BUFSIZE            4096
 236
 237 /**
 238  * some more defs
 239  */
 240 #define QETH_TX_TIMEOUT         100 * HZ
 241 #define QETH_RCD_TIMEOUT        60 * HZ
 242 #define QETH_RECLAIM_WORK_TIME  HZ
 243 #define QETH_MAX_PORTNO         15
 244
 245 /*IPv6 address autoconfiguration stuff*/
 246 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 247 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 248
 249 /*****************************************************************************/
 250 /* QDIO queue and buffer handling                                            */
 251 /*****************************************************************************/
 252 #define QETH_MAX_QUEUES 4
 253 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 254 #define QETH_IN_BUF_COUNT_DEFAULT 64
 255 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
 256 #define QETH_IN_BUF_COUNT_MIN 8
 257 #define QETH_IN_BUF_COUNT_MAX 128
 258 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 259 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 260                  ((card)->qdio.in_buf_pool.buf_count / 2)
 261
 262 /* buffers we have to be behind before we get a PCI */
 263 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 264 /*enqueued free buffers left before we get a PCI*/
 265 #define QETH_PCI_THRESHOLD_B(card) 0
 266 /*not used unless the microcode gets patched*/
 267 #define QETH_PCI_TIMER_VALUE(card) 3
 268
 269 /* priority queing */
 270 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 271 #define QETH_DEFAULT_QUEUE    2
 272 #define QETH_NO_PRIO_QUEUEING 0
 273 #define QETH_PRIO_Q_ING_PREC  1
 274 #define QETH_PRIO_Q_ING_TOS   2
 275 #define QETH_PRIO_Q_ING_SKB   3
 276 #define QETH_PRIO_Q_ING_VLAN  4
 277
 278 /* Packing */
 279 #define QETH_LOW_WATERMARK_PACK  2
 280 #define QETH_HIGH_WATERMARK_PACK 5
 281 #define QETH_WATERMARK_PACK_FUZZ 1
 282
 283 /* large receive scatter gather copy break */
 284 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
 285 #define QETH_RX_PULL_LEN 256
 286
 287 struct qeth_hdr_layer3 {
 288         __u8  id;
 289         __u8  flags;
 290         __u16 inbound_checksum; /*TSO:__u16 seqno */
 291         __u32 token;            /*TSO: __u32 reserved */
 292         __u16 length;
 293         __u8  vlan_prio;
 294         __u8  ext_flags;
 295         __u16 vlan_id;
 296         __u16 frame_offset;
 297         __u8  dest_addr[16];
 298 } __attribute__ ((packed));
 299
 300 struct qeth_hdr_layer2 {
 301         __u8 id;
 302         __u8 flags[3];
 303         __u8 port_no;
 304         __u8 hdr_length;
 305         __u16 pkt_length;
 306         __u16 seq_no;
 307         __u16 vlan_id;
 308         __u32 reserved;
 309         __u8 reserved2[16];
 310 } __attribute__ ((packed));
 311
 312 struct qeth_hdr_osn {
 313         __u8 id;
 314         __u8 reserved;
 315         __u16 seq_no;
 316         __u16 reserved2;
 317         __u16 control_flags;
 318         __u16 pdu_length;
 319         __u8 reserved3[18];
 320         __u32 ccid;
 321 } __attribute__ ((packed));
 322
 323 struct qeth_hdr {
 324         union {
 325                 struct qeth_hdr_layer2 l2;
 326                 struct qeth_hdr_layer3 l3;
 327                 struct qeth_hdr_osn    osn;
 328         } hdr;
 329 } __attribute__ ((packed));
 330
 331 /*TCP Segmentation Offload header*/
 332 struct qeth_hdr_ext_tso {
 333         __u16 hdr_tot_len;
 334         __u8  imb_hdr_no;
 335         __u8  reserved;
 336         __u8  hdr_type;
 337         __u8  hdr_version;
 338         __u16 hdr_len;
 339         __u32 payload_len;
 340         __u16 mss;
 341         __u16 dg_hdr_len;
 342         __u8  padding[16];
 343 } __attribute__ ((packed));
 344
 345 struct qeth_hdr_tso {
 346         struct qeth_hdr hdr;    /*hdr->hdr.l3.xxx*/
 347         struct qeth_hdr_ext_tso ext;
 348 } __attribute__ ((packed));
 349
 350
 351 /* flags for qeth_hdr.flags */
 352 #define QETH_HDR_PASSTHRU 0x10
 353 #define QETH_HDR_IPV6     0x80
 354 #define QETH_HDR_CAST_MASK 0x07
 355 enum qeth_cast_flags {
 356         QETH_CAST_UNICAST   = 0x06,
 357         QETH_CAST_MULTICAST = 0x04,
 358         QETH_CAST_BROADCAST = 0x05,
 359         QETH_CAST_ANYCAST   = 0x07,
 360         QETH_CAST_NOCAST    = 0x00,
 361 };
 362
 363 enum qeth_layer2_frame_flags {
 364         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 365         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 366         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 367         QETH_LAYER2_FLAG_VLAN      = 0x10,
 368 };
 369
 370 enum qeth_header_ids {
 371         QETH_HEADER_TYPE_LAYER3 = 0x01,
 372         QETH_HEADER_TYPE_LAYER2 = 0x02,
 373         QETH_HEADER_TYPE_TSO    = 0x03,
 374         QETH_HEADER_TYPE_OSN    = 0x04,
 375 };
 376 /* flags for qeth_hdr.ext_flags */
 377 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 378 #define QETH_HDR_EXT_TOKEN_ID         0x02
 379 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 380 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 381 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 382 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 383 #define QETH_HDR_EXT_UDP              0x40 /*bit off for TCP*/
 384
 385 enum qeth_qdio_buffer_states {
 386         /*
 387          * inbound: read out by driver; owned by hardware in order to be filled
 388          * outbound: owned by driver in order to be filled
 389          */
 390         QETH_QDIO_BUF_EMPTY,
 391         /*
 392          * inbound: filled by hardware; owned by driver in order to be read out
 393          * outbound: filled by driver; owned by hardware in order to be sent
 394          */
 395         QETH_QDIO_BUF_PRIMED,
 396         /*
 397          * inbound: not applicable
 398          * outbound: identified to be pending in TPQ
 399          */
 400         QETH_QDIO_BUF_PENDING,
 401         /*
 402          * inbound: not applicable
 403          * outbound: found in completion queue
 404          */
 405         QETH_QDIO_BUF_IN_CQ,
 406         /*
 407          * inbound: not applicable
 408          * outbound: handled via transfer pending / completion queue
 409          */
 410         QETH_QDIO_BUF_HANDLED_DELAYED,
 411 };
 412
 413 enum qeth_qdio_info_states {
 414         QETH_QDIO_UNINITIALIZED,
 415         QETH_QDIO_ALLOCATED,
 416         QETH_QDIO_ESTABLISHED,
 417         QETH_QDIO_CLEANING
 418 };
 419
 420 struct qeth_buffer_pool_entry {
 421         struct list_head list;
 422         struct list_head init_list;
 423         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 424 };
 425
 426 struct qeth_qdio_buffer_pool {
 427         struct list_head entry_list;
 428         int buf_count;
 429 };
 430
 431 struct qeth_qdio_buffer {
 432         struct qdio_buffer *buffer;
 433         /* the buffer pool entry currently associated to this buffer */
 434         struct qeth_buffer_pool_entry *pool_entry;
 435         struct sk_buff *rx_skb;
 436 };
 437
 438 struct qeth_qdio_q {
 439         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 440         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 441         int next_buf_to_init;
 442 };
 443
 444 struct qeth_qdio_out_buffer {
 445         struct qdio_buffer *buffer;
 446         atomic_t state;
 447         int next_element_to_fill;
 448         struct sk_buff_head skb_list;
 449         int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
 450
 451         struct qaob *aob;
 452         struct qeth_qdio_out_q *q;
 453         struct qeth_qdio_out_buffer *next_pending;
 454 };
 455
 456 struct qeth_card;
 457
 458 enum qeth_out_q_states {
 459        QETH_OUT_Q_UNLOCKED,
 460        QETH_OUT_Q_LOCKED,
 461        QETH_OUT_Q_LOCKED_FLUSH,
 462 };
 463
 464 struct qeth_qdio_out_q {
 465         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 466         struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
 467         struct qdio_outbuf_state *bufstates; /* convenience pointer */
 468         int queue_no;
 469         struct qeth_card *card;
 470         atomic_t state;
 471         int do_pack;
 472         /*
 473          * index of buffer to be filled by driver; state EMPTY or PACKING
 474          */
 475         int next_buf_to_fill;
 476         /*
 477          * number of buffers that are currently filled (PRIMED)
 478          * -> these buffers are hardware-owned
 479          */
 480         atomic_t used_buffers;
 481         /* indicates whether PCI flag must be set (or if one is outstanding) */
 482         atomic_t set_pci_flags_count;
 483 };
 484
 485 struct qeth_qdio_info {
 486         atomic_t state;
 487         /* input */
 488         int no_in_queues;
 489         struct qeth_qdio_q *in_q;
 490         struct qeth_qdio_q *c_q;
 491         struct qeth_qdio_buffer_pool in_buf_pool;
 492         struct qeth_qdio_buffer_pool init_pool;
 493         int in_buf_size;
 494
 495         /* output */
 496         int no_out_queues;
 497         struct qeth_qdio_out_q **out_qs;
 498         struct qdio_outbuf_state *out_bufstates;
 499
 500         /* priority queueing */
 501         int do_prio_queueing;
 502         int default_out_queue;
 503 };
 504
 505 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
 506 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
 507 /* tr mc mac is longer, but that will be enough to detect mc frames */
 508 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
 509 #define QETH_TR_MAC_C        0x0300 /* canonical */
 510
 511 /**
 512  * buffer stuff for read channel
 513  */
 514 #define QETH_CMD_BUFFER_NO      8
 515
 516 /**
 517  *  channel state machine
 518  */
 519 enum qeth_channel_states {
 520         CH_STATE_UP,
 521         CH_STATE_DOWN,
 522         CH_STATE_ACTIVATING,
 523         CH_STATE_HALTED,
 524         CH_STATE_STOPPED,
 525         CH_STATE_RCD,
 526         CH_STATE_RCD_DONE,
 527 };
 528 /**
 529  * card state machine
 530  */
 531 enum qeth_card_states {
 532         CARD_STATE_DOWN,
 533         CARD_STATE_HARDSETUP,
 534         CARD_STATE_SOFTSETUP,
 535         CARD_STATE_UP,
 536         CARD_STATE_RECOVER,
 537 };
 538
 539 /**
 540  * Protocol versions
 541  */
 542 enum qeth_prot_versions {
 543         QETH_PROT_IPV4 = 0x0004,
 544         QETH_PROT_IPV6 = 0x0006,
 545 };
 546
 547 enum qeth_ip_types {
 548         QETH_IP_TYPE_NORMAL,
 549         QETH_IP_TYPE_VIPA,
 550         QETH_IP_TYPE_RXIP,
 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 ccw_device *ccwdev;
 591 /*command buffer for control data*/
 592         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 593         atomic_t irq_pending;
 594         int io_buf_no;
 595         int buf_no;
 596 };
 597
 598 /**
 599  *  OSA card related definitions
 600  */
 601 struct qeth_token {
 602         __u32 issuer_rm_w;
 603         __u32 issuer_rm_r;
 604         __u32 cm_filter_w;
 605         __u32 cm_filter_r;
 606         __u32 cm_connection_w;
 607         __u32 cm_connection_r;
 608         __u32 ulp_filter_w;
 609         __u32 ulp_filter_r;
 610         __u32 ulp_connection_w;
 611         __u32 ulp_connection_r;
 612 };
 613
 614 struct qeth_seqno {
 615         __u32 trans_hdr;
 616         __u32 pdu_hdr;
 617         __u32 pdu_hdr_ack;
 618         __u16 ipa;
 619         __u32 pkt_seqno;
 620 };
 621
 622 struct qeth_reply {
 623         struct list_head list;
 624         wait_queue_head_t wait_q;
 625         int (*callback)(struct qeth_card *, struct qeth_reply *,
 626                 unsigned long);
 627         u32 seqno;
 628         unsigned long offset;
 629         atomic_t received;
 630         int rc;
 631         void *param;
 632         struct qeth_card *card;
 633         atomic_t refcnt;
 634 };
 635
 636 struct qeth_card_blkt {
 637         int time_total;
 638         int inter_packet;
 639         int inter_packet_jumbo;
 640 };
 641
 642 #define QETH_BROADCAST_WITH_ECHO    0x01
 643 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
 644 #define QETH_LAYER2_MAC_READ        0x01
 645 #define QETH_LAYER2_MAC_REGISTERED  0x02
 646 struct qeth_card_info {
 647         unsigned short unit_addr2;
 648         unsigned short cula;
 649         unsigned short chpid;
 650         __u16 func_level;
 651         char mcl_level[QETH_MCL_LENGTH + 1];
 652         int guestlan;
 653         int mac_bits;
 654         int portno;
 655         enum qeth_card_types type;
 656         enum qeth_link_types link_type;
 657         int is_multicast_different;
 658         int initial_mtu;
 659         int max_mtu;
 660         int broadcast_capable;
 661         int unique_id;
 662         struct qeth_card_blkt blkt;
 663         enum qeth_ipa_promisc_modes promisc_mode;
 664         __u32 diagass_support;
 665         __u32 hwtrap;
 666 };
 667
 668 struct qeth_card_options {
 669         struct qeth_routing_info route4;
 670         struct qeth_ipa_info ipa4;
 671         struct qeth_ipa_info adp; /*Adapter parameters*/
 672         struct qeth_routing_info route6;
 673         struct qeth_ipa_info ipa6;
 674         struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
 675         int fake_broadcast;
 676         int layer2;
 677         int performance_stats;
 678         int rx_sg_cb;
 679         enum qeth_ipa_isolation_modes isolation;
 680         enum qeth_ipa_isolation_modes prev_isolation;
 681         int sniffer;
 682         enum qeth_cq cq;
 683         char hsuid[9];
 684 };
 685
 686 /*
 687  * thread bits for qeth_card thread masks
 688  */
 689 enum qeth_threads {
 690         QETH_RECOVER_THREAD = 1,
 691 };
 692
 693 struct qeth_osn_info {
 694         int (*assist_cb)(struct net_device *dev, void *data);
 695         int (*data_cb)(struct sk_buff *skb);
 696 };
 697
 698 enum qeth_discipline_id {
 699         QETH_DISCIPLINE_LAYER3 = 0,
 700         QETH_DISCIPLINE_LAYER2 = 1,
 701 };
 702
 703 struct qeth_discipline {
 704         const struct device_type *devtype;
 705         void (*start_poll)(struct ccw_device *, int, unsigned long);
 706         qdio_handler_t *input_handler;
 707         qdio_handler_t *output_handler;
 708         int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done);
 709         int (*recover)(void *ptr);
 710         int (*setup) (struct ccwgroup_device *);
 711         void (*remove) (struct ccwgroup_device *);
 712         int (*set_online) (struct ccwgroup_device *);
 713         int (*set_offline) (struct ccwgroup_device *);
 714         int (*freeze)(struct ccwgroup_device *);
 715         int (*thaw) (struct ccwgroup_device *);
 716         int (*restore)(struct ccwgroup_device *);
 717         int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
 718         int (*control_event_handler)(struct qeth_card *card,
 719                                         struct qeth_ipa_cmd *cmd);
 720 };
 721
 722 struct qeth_vlan_vid {
 723         struct list_head list;
 724         unsigned short vid;
 725 };
 726
 727 enum qeth_addr_disposition {
 728         QETH_DISP_ADDR_DELETE = 0,
 729         QETH_DISP_ADDR_DO_NOTHING = 1,
 730         QETH_DISP_ADDR_ADD = 2,
 731 };
 732
 733 struct qeth_rx {
 734         int b_count;
 735         int b_index;
 736         struct qdio_buffer_element *b_element;
 737         int e_offset;
 738         int qdio_err;
 739 };
 740
 741 struct carrier_info {
 742         __u8  card_type;
 743         __u16 port_mode;
 744         __u32 port_speed;
 745 };
 746
 747 struct qeth_switch_info {
 748         __u32 capabilities;
 749         __u32 settings;
 750 };
 751
 752 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
 753
 754 struct qeth_card {
 755         struct list_head list;
 756         enum qeth_card_states state;
 757         int lan_online;
 758         spinlock_t lock;
 759         struct ccwgroup_device *gdev;
 760         struct qeth_channel read;
 761         struct qeth_channel write;
 762         struct qeth_channel data;
 763
 764         struct net_device *dev;
 765         struct net_device_stats stats;
 766
 767         struct qeth_card_info info;
 768         struct qeth_token token;
 769         struct qeth_seqno seqno;
 770         struct qeth_card_options options;
 771
 772         wait_queue_head_t wait_q;
 773         spinlock_t vlanlock;
 774         spinlock_t mclock;
 775         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 776         struct list_head vid_list;
 777         DECLARE_HASHTABLE(mac_htable, 4);
 778         DECLARE_HASHTABLE(ip_htable, 4);
 779         DECLARE_HASHTABLE(ip_mc_htable, 4);
 780         struct work_struct kernel_thread_starter;
 781         spinlock_t thread_mask_lock;
 782         unsigned long thread_start_mask;
 783         unsigned long thread_allowed_mask;
 784         unsigned long thread_running_mask;
 785         struct task_struct *recovery_task;
 786         spinlock_t ip_lock;
 787         struct qeth_ipato ipato;
 788         struct list_head cmd_waiter_list;
 789         /* QDIO buffer handling */
 790         struct qeth_qdio_info qdio;
 791         struct qeth_perf_stats perf_stats;
 792         int read_or_write_problem;
 793         struct qeth_osn_info osn_info;
 794         struct qeth_discipline *discipline;
 795         atomic_t force_alloc_skb;
 796         struct service_level qeth_service_level;
 797         struct qdio_ssqd_desc ssqd;
 798         debug_info_t *debug;
 799         struct mutex conf_mutex;
 800         struct mutex discipline_mutex;
 801         struct napi_struct napi;
 802         struct qeth_rx rx;
 803         struct delayed_work buffer_reclaim_work;
 804         int reclaim_index;
 805         struct work_struct close_dev_work;
 806 };
 807
 808 struct qeth_card_list_struct {
 809         struct list_head list;
 810         rwlock_t rwlock;
 811 };
 812
 813 struct qeth_trap_id {
 814         __u16 lparnr;
 815         char vmname[8];
 816         __u8 chpid;
 817         __u8 ssid;
 818         __u16 devno;
 819 } __packed;
 820
 821 /*some helper functions*/
 822 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 823
 824 /**
 825  * qeth_get_elements_for_range() -      find number of SBALEs to cover range.
 826  * @start:                              Start of the address range.
 827  * @end:                                Address after the end of the range.
 828  *
 829  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
 830  * the specified address range.
 831  */
 832 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
 833 {
 834         return PFN_UP(end - 1) - PFN_DOWN(start);
 835 }
 836
 837 static inline int qeth_get_micros(void)
 838 {
 839         return (int) (get_tod_clock() >> 12);
 840 }
 841
 842 static inline int qeth_get_ip_version(struct sk_buff *skb)
 843 {
 844         __be16 *p = &((struct ethhdr *)skb->data)->h_proto;
 845
 846         if (be16_to_cpu(*p) == ETH_P_8021Q)
 847                 p += 2;
 848         switch (be16_to_cpu(*p)) {
 849         case ETH_P_IPV6:
 850                 return 6;
 851         case ETH_P_IP:
 852                 return 4;
 853         default:
 854                 return 0;
 855         }
 856 }
 857
 858 static inline int qeth_get_ip_protocol(struct sk_buff *skb)
 859 {
 860         return ip_hdr(skb)->protocol;
 861 }
 862
 863 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
 864                 struct qeth_buffer_pool_entry *entry)
 865 {
 866         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
 867 }
 868
 869 static inline int qeth_is_diagass_supported(struct qeth_card *card,
 870                 enum qeth_diags_cmds cmd)
 871 {
 872         return card->info.diagass_support & (__u32)cmd;
 873 }
 874
 875 extern struct qeth_discipline qeth_l2_discipline;
 876 extern struct qeth_discipline qeth_l3_discipline;
 877 extern const struct attribute_group *qeth_generic_attr_groups[];
 878 extern const struct attribute_group *qeth_osn_attr_groups[];
 879 extern const struct attribute_group qeth_device_attr_group;
 880 extern const struct attribute_group qeth_device_blkt_group;
 881 extern const struct device_type qeth_generic_devtype;
 882 extern struct workqueue_struct *qeth_wq;
 883
 884 int qeth_card_hw_is_reachable(struct qeth_card *);
 885 const char *qeth_get_cardname_short(struct qeth_card *);
 886 int qeth_realloc_buffer_pool(struct qeth_card *, int);
 887 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
 888 void qeth_core_free_discipline(struct qeth_card *);
 889
 890 /* exports for qeth discipline device drivers */
 891 extern struct qeth_card_list_struct qeth_core_card_list;
 892 extern struct kmem_cache *qeth_core_header_cache;
 893 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
 894
 895 void qeth_set_recovery_task(struct qeth_card *);
 896 void qeth_clear_recovery_task(struct qeth_card *);
 897 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
 898 int qeth_threads_running(struct qeth_card *, unsigned long);
 899 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
 900 int qeth_do_run_thread(struct qeth_card *, unsigned long);
 901 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
 902 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
 903 int qeth_core_hardsetup_card(struct qeth_card *);
 904 void qeth_print_status_message(struct qeth_card *);
 905 int qeth_init_qdio_queues(struct qeth_card *);
 906 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
 907                   int (*reply_cb)
 908                   (struct qeth_card *, struct qeth_reply *, unsigned long),
 909                   void *);
 910 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
 911                         enum qeth_ipa_cmds, enum qeth_prot_versions);
 912 int qeth_query_setadapterparms(struct qeth_card *);
 913 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
 914                 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
 915                 struct qeth_hdr **);
 916 void qeth_schedule_recovery(struct qeth_card *);
 917 void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long);
 918 int qeth_poll(struct napi_struct *napi, int budget);
 919 void qeth_qdio_input_handler(struct ccw_device *,
 920                 unsigned int, unsigned int, int,
 921                 int, unsigned long);
 922 void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
 923                         int, int, int, unsigned long);
 924 void qeth_clear_ipacmd_list(struct qeth_card *);
 925 int qeth_qdio_clear_card(struct qeth_card *, int);
 926 void qeth_clear_working_pool_list(struct qeth_card *);
 927 void qeth_clear_cmd_buffers(struct qeth_channel *);
 928 void qeth_clear_qdio_buffers(struct qeth_card *);
 929 void qeth_setadp_promisc_mode(struct qeth_card *);
 930 struct net_device_stats *qeth_get_stats(struct net_device *);
 931 int qeth_change_mtu(struct net_device *, int);
 932 int qeth_setadpparms_change_macaddr(struct qeth_card *);
 933 void qeth_tx_timeout(struct net_device *);
 934 void qeth_prepare_control_data(struct qeth_card *, int,
 935                                 struct qeth_cmd_buffer *);
 936 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
 937 void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
 938 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
 939 int qeth_query_switch_attributes(struct qeth_card *card,
 940                                   struct qeth_switch_info *sw_info);
 941 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
 942         int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
 943         void *reply_param);
 944 int qeth_bridgeport_query_ports(struct qeth_card *card,
 945         enum qeth_sbp_roles *role, enum qeth_sbp_states *state);
 946 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);
 947 int qeth_bridgeport_an_set(struct qeth_card *card, int enable);
 948 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
 949 int qeth_get_elements_no(struct qeth_card *card, struct sk_buff *skb,
 950                          int extra_elems, int data_offset);
 951 int qeth_get_elements_for_frags(struct sk_buff *);
 952 int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *,
 953                         struct sk_buff *, struct qeth_hdr *, int, int);
 954 int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
 955                     struct sk_buff *, struct qeth_hdr *, int);
 956 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 957 int qeth_core_get_sset_count(struct net_device *, int);
 958 void qeth_core_get_ethtool_stats(struct net_device *,
 959                                 struct ethtool_stats *, u64 *);
 960 void qeth_core_get_strings(struct net_device *, u32, u8 *);
 961 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
 962 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
 963 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
 964                                          struct ethtool_link_ksettings *cmd);
 965 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
 966 int qeth_hdr_chk_and_bounce(struct sk_buff *, struct qeth_hdr **, int);
 967 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
 968 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
 969 int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
 970 void qeth_trace_features(struct qeth_card *);
 971 void qeth_close_dev(struct qeth_card *);
 972 int qeth_send_simple_setassparms(struct qeth_card *, enum qeth_ipa_funcs,
 973                                  __u16, long);
 974 int qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *, __u16,
 975                           long,
 976                           int (*reply_cb)(struct qeth_card *,
 977                                           struct qeth_reply *, unsigned long),
 978                           void *);
 979 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
 980 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
 981                                                  enum qeth_ipa_funcs,
 982                                                  __u16, __u16,
 983                                                  enum qeth_prot_versions);
 984 int qeth_set_features(struct net_device *, netdev_features_t);
 985 int qeth_recover_features(struct net_device *);
 986 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
 987
 988 /* exports for OSN */
 989 int qeth_osn_assist(struct net_device *, void *, int);
 990 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
 991                 int (*assist_cb)(struct net_device *, void *),
 992                 int (*data_cb)(struct sk_buff *));
 993 void qeth_osn_deregister(struct net_device *);
 994
 995 #endif /* __QETH_CORE_H__ */