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_HEADER_SIZE        32
 244 #define QETH_MAX_PORTNO         15
 245
 246 /*IPv6 address autoconfiguration stuff*/
 247 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 248 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 249
 250 /*****************************************************************************/
 251 /* QDIO queue and buffer handling                                            */
 252 /*****************************************************************************/
 253 #define QETH_MAX_QUEUES 4
 254 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 255 #define QETH_IN_BUF_COUNT_DEFAULT 64
 256 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
 257 #define QETH_IN_BUF_COUNT_MIN 8
 258 #define QETH_IN_BUF_COUNT_MAX 128
 259 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 260 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 261                  ((card)->qdio.in_buf_pool.buf_count / 2)
 262
 263 /* buffers we have to be behind before we get a PCI */
 264 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 265 /*enqueued free buffers left before we get a PCI*/
 266 #define QETH_PCI_THRESHOLD_B(card) 0
 267 /*not used unless the microcode gets patched*/
 268 #define QETH_PCI_TIMER_VALUE(card) 3
 269
 270 /* priority queing */
 271 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 272 #define QETH_DEFAULT_QUEUE    2
 273 #define QETH_NO_PRIO_QUEUEING 0
 274 #define QETH_PRIO_Q_ING_PREC  1
 275 #define QETH_PRIO_Q_ING_TOS   2
 276 #define QETH_PRIO_Q_ING_SKB   3
 277 #define QETH_PRIO_Q_ING_VLAN  4
 278
 279 /* Packing */
 280 #define QETH_LOW_WATERMARK_PACK  2
 281 #define QETH_HIGH_WATERMARK_PACK 5
 282 #define QETH_WATERMARK_PACK_FUZZ 1
 283
 284 #define QETH_IP_HEADER_SIZE 40
 285
 286 /* large receive scatter gather copy break */
 287 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
 288 #define QETH_RX_PULL_LEN 256
 289
 290 struct qeth_hdr_layer3 {
 291         __u8  id;
 292         __u8  flags;
 293         __u16 inbound_checksum; /*TSO:__u16 seqno */
 294         __u32 token;            /*TSO: __u32 reserved */
 295         __u16 length;
 296         __u8  vlan_prio;
 297         __u8  ext_flags;
 298         __u16 vlan_id;
 299         __u16 frame_offset;
 300         __u8  dest_addr[16];
 301 } __attribute__ ((packed));
 302
 303 struct qeth_hdr_layer2 {
 304         __u8 id;
 305         __u8 flags[3];
 306         __u8 port_no;
 307         __u8 hdr_length;
 308         __u16 pkt_length;
 309         __u16 seq_no;
 310         __u16 vlan_id;
 311         __u32 reserved;
 312         __u8 reserved2[16];
 313 } __attribute__ ((packed));
 314
 315 struct qeth_hdr_osn {
 316         __u8 id;
 317         __u8 reserved;
 318         __u16 seq_no;
 319         __u16 reserved2;
 320         __u16 control_flags;
 321         __u16 pdu_length;
 322         __u8 reserved3[18];
 323         __u32 ccid;
 324 } __attribute__ ((packed));
 325
 326 struct qeth_hdr {
 327         union {
 328                 struct qeth_hdr_layer2 l2;
 329                 struct qeth_hdr_layer3 l3;
 330                 struct qeth_hdr_osn    osn;
 331         } hdr;
 332 } __attribute__ ((packed));
 333
 334 /*TCP Segmentation Offload header*/
 335 struct qeth_hdr_ext_tso {
 336         __u16 hdr_tot_len;
 337         __u8  imb_hdr_no;
 338         __u8  reserved;
 339         __u8  hdr_type;
 340         __u8  hdr_version;
 341         __u16 hdr_len;
 342         __u32 payload_len;
 343         __u16 mss;
 344         __u16 dg_hdr_len;
 345         __u8  padding[16];
 346 } __attribute__ ((packed));
 347
 348 struct qeth_hdr_tso {
 349         struct qeth_hdr hdr;    /*hdr->hdr.l3.xxx*/
 350         struct qeth_hdr_ext_tso ext;
 351 } __attribute__ ((packed));
 352
 353
 354 /* flags for qeth_hdr.flags */
 355 #define QETH_HDR_PASSTHRU 0x10
 356 #define QETH_HDR_IPV6     0x80
 357 #define QETH_HDR_CAST_MASK 0x07
 358 enum qeth_cast_flags {
 359         QETH_CAST_UNICAST   = 0x06,
 360         QETH_CAST_MULTICAST = 0x04,
 361         QETH_CAST_BROADCAST = 0x05,
 362         QETH_CAST_ANYCAST   = 0x07,
 363         QETH_CAST_NOCAST    = 0x00,
 364 };
 365
 366 enum qeth_layer2_frame_flags {
 367         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 368         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 369         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 370         QETH_LAYER2_FLAG_VLAN      = 0x10,
 371 };
 372
 373 enum qeth_header_ids {
 374         QETH_HEADER_TYPE_LAYER3 = 0x01,
 375         QETH_HEADER_TYPE_LAYER2 = 0x02,
 376         QETH_HEADER_TYPE_TSO    = 0x03,
 377         QETH_HEADER_TYPE_OSN    = 0x04,
 378 };
 379 /* flags for qeth_hdr.ext_flags */
 380 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 381 #define QETH_HDR_EXT_TOKEN_ID         0x02
 382 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 383 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 384 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 385 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 386 #define QETH_HDR_EXT_UDP              0x40 /*bit off for TCP*/
 387
 388 enum qeth_qdio_buffer_states {
 389         /*
 390          * inbound: read out by driver; owned by hardware in order to be filled
 391          * outbound: owned by driver in order to be filled
 392          */
 393         QETH_QDIO_BUF_EMPTY,
 394         /*
 395          * inbound: filled by hardware; owned by driver in order to be read out
 396          * outbound: filled by driver; owned by hardware in order to be sent
 397          */
 398         QETH_QDIO_BUF_PRIMED,
 399         /*
 400          * inbound: not applicable
 401          * outbound: identified to be pending in TPQ
 402          */
 403         QETH_QDIO_BUF_PENDING,
 404         /*
 405          * inbound: not applicable
 406          * outbound: found in completion queue
 407          */
 408         QETH_QDIO_BUF_IN_CQ,
 409         /*
 410          * inbound: not applicable
 411          * outbound: handled via transfer pending / completion queue
 412          */
 413         QETH_QDIO_BUF_HANDLED_DELAYED,
 414 };
 415
 416 enum qeth_qdio_info_states {
 417         QETH_QDIO_UNINITIALIZED,
 418         QETH_QDIO_ALLOCATED,
 419         QETH_QDIO_ESTABLISHED,
 420         QETH_QDIO_CLEANING
 421 };
 422
 423 struct qeth_buffer_pool_entry {
 424         struct list_head list;
 425         struct list_head init_list;
 426         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 427 };
 428
 429 struct qeth_qdio_buffer_pool {
 430         struct list_head entry_list;
 431         int buf_count;
 432 };
 433
 434 struct qeth_qdio_buffer {
 435         struct qdio_buffer *buffer;
 436         /* the buffer pool entry currently associated to this buffer */
 437         struct qeth_buffer_pool_entry *pool_entry;
 438         struct sk_buff *rx_skb;
 439 };
 440
 441 struct qeth_qdio_q {
 442         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 443         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 444         int next_buf_to_init;
 445 };
 446
 447 struct qeth_qdio_out_buffer {
 448         struct qdio_buffer *buffer;
 449         atomic_t state;
 450         int next_element_to_fill;
 451         struct sk_buff_head skb_list;
 452         int is_header[16];
 453
 454         struct qaob *aob;
 455         struct qeth_qdio_out_q *q;
 456         struct qeth_qdio_out_buffer *next_pending;
 457 };
 458
 459 struct qeth_card;
 460
 461 enum qeth_out_q_states {
 462        QETH_OUT_Q_UNLOCKED,
 463        QETH_OUT_Q_LOCKED,
 464        QETH_OUT_Q_LOCKED_FLUSH,
 465 };
 466
 467 struct qeth_qdio_out_q {
 468         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 469         struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
 470         struct qdio_outbuf_state *bufstates; /* convenience pointer */
 471         int queue_no;
 472         struct qeth_card *card;
 473         atomic_t state;
 474         int do_pack;
 475         /*
 476          * index of buffer to be filled by driver; state EMPTY or PACKING
 477          */
 478         int next_buf_to_fill;
 479         /*
 480          * number of buffers that are currently filled (PRIMED)
 481          * -> these buffers are hardware-owned
 482          */
 483         atomic_t used_buffers;
 484         /* indicates whether PCI flag must be set (or if one is outstanding) */
 485         atomic_t set_pci_flags_count;
 486 };
 487
 488 struct qeth_qdio_info {
 489         atomic_t state;
 490         /* input */
 491         int no_in_queues;
 492         struct qeth_qdio_q *in_q;
 493         struct qeth_qdio_q *c_q;
 494         struct qeth_qdio_buffer_pool in_buf_pool;
 495         struct qeth_qdio_buffer_pool init_pool;
 496         int in_buf_size;
 497
 498         /* output */
 499         int no_out_queues;
 500         struct qeth_qdio_out_q **out_qs;
 501         struct qdio_outbuf_state *out_bufstates;
 502
 503         /* priority queueing */
 504         int do_prio_queueing;
 505         int default_out_queue;
 506 };
 507
 508 enum qeth_send_errors {
 509         QETH_SEND_ERROR_NONE,
 510         QETH_SEND_ERROR_LINK_FAILURE,
 511         QETH_SEND_ERROR_RETRY,
 512         QETH_SEND_ERROR_KICK_IT,
 513 };
 514
 515 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
 516 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
 517 /* tr mc mac is longer, but that will be enough to detect mc frames */
 518 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
 519 #define QETH_TR_MAC_C        0x0300 /* canonical */
 520
 521 #define DEFAULT_ADD_HHLEN 0
 522 #define MAX_ADD_HHLEN 1024
 523
 524 /**
 525  * buffer stuff for read channel
 526  */
 527 #define QETH_CMD_BUFFER_NO      8
 528
 529 /**
 530  *  channel state machine
 531  */
 532 enum qeth_channel_states {
 533         CH_STATE_UP,
 534         CH_STATE_DOWN,
 535         CH_STATE_ACTIVATING,
 536         CH_STATE_HALTED,
 537         CH_STATE_STOPPED,
 538         CH_STATE_RCD,
 539         CH_STATE_RCD_DONE,
 540 };
 541 /**
 542  * card state machine
 543  */
 544 enum qeth_card_states {
 545         CARD_STATE_DOWN,
 546         CARD_STATE_HARDSETUP,
 547         CARD_STATE_SOFTSETUP,
 548         CARD_STATE_UP,
 549         CARD_STATE_RECOVER,
 550 };
 551
 552 /**
 553  * Protocol versions
 554  */
 555 enum qeth_prot_versions {
 556         QETH_PROT_IPV4 = 0x0004,
 557         QETH_PROT_IPV6 = 0x0006,
 558 };
 559
 560 enum qeth_ip_types {
 561         QETH_IP_TYPE_NORMAL,
 562         QETH_IP_TYPE_VIPA,
 563         QETH_IP_TYPE_RXIP,
 564 };
 565
 566 enum qeth_cmd_buffer_state {
 567         BUF_STATE_FREE,
 568         BUF_STATE_LOCKED,
 569         BUF_STATE_PROCESSED,
 570 };
 571
 572 enum qeth_cq {
 573         QETH_CQ_DISABLED = 0,
 574         QETH_CQ_ENABLED = 1,
 575         QETH_CQ_NOTAVAILABLE = 2,
 576 };
 577
 578 struct qeth_ipato {
 579         int enabled;
 580         int invert4;
 581         int invert6;
 582         struct list_head entries;
 583 };
 584
 585 struct qeth_channel;
 586
 587 struct qeth_cmd_buffer {
 588         enum qeth_cmd_buffer_state state;
 589         struct qeth_channel *channel;
 590         unsigned char *data;
 591         int rc;
 592         void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
 593 };
 594
 595 /**
 596  * definition of a qeth channel, used for read and write
 597  */
 598 struct qeth_channel {
 599         enum qeth_channel_states state;
 600         struct ccw1 ccw;
 601         spinlock_t iob_lock;
 602         wait_queue_head_t wait_q;
 603         struct ccw_device *ccwdev;
 604 /*command buffer for control data*/
 605         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 606         atomic_t irq_pending;
 607         int io_buf_no;
 608         int buf_no;
 609 };
 610
 611 /**
 612  *  OSA card related definitions
 613  */
 614 struct qeth_token {
 615         __u32 issuer_rm_w;
 616         __u32 issuer_rm_r;
 617         __u32 cm_filter_w;
 618         __u32 cm_filter_r;
 619         __u32 cm_connection_w;
 620         __u32 cm_connection_r;
 621         __u32 ulp_filter_w;
 622         __u32 ulp_filter_r;
 623         __u32 ulp_connection_w;
 624         __u32 ulp_connection_r;
 625 };
 626
 627 struct qeth_seqno {
 628         __u32 trans_hdr;
 629         __u32 pdu_hdr;
 630         __u32 pdu_hdr_ack;
 631         __u16 ipa;
 632         __u32 pkt_seqno;
 633 };
 634
 635 struct qeth_reply {
 636         struct list_head list;
 637         wait_queue_head_t wait_q;
 638         int (*callback)(struct qeth_card *, struct qeth_reply *,
 639                 unsigned long);
 640         u32 seqno;
 641         unsigned long offset;
 642         atomic_t received;
 643         int rc;
 644         void *param;
 645         struct qeth_card *card;
 646         atomic_t refcnt;
 647 };
 648
 649
 650 struct qeth_card_blkt {
 651         int time_total;
 652         int inter_packet;
 653         int inter_packet_jumbo;
 654 };
 655
 656 #define QETH_BROADCAST_WITH_ECHO    0x01
 657 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
 658 #define QETH_LAYER2_MAC_READ        0x01
 659 #define QETH_LAYER2_MAC_REGISTERED  0x02
 660 struct qeth_card_info {
 661         unsigned short unit_addr2;
 662         unsigned short cula;
 663         unsigned short chpid;
 664         __u16 func_level;
 665         char mcl_level[QETH_MCL_LENGTH + 1];
 666         int guestlan;
 667         int mac_bits;
 668         int portno;
 669         enum qeth_card_types type;
 670         enum qeth_link_types link_type;
 671         int is_multicast_different;
 672         int initial_mtu;
 673         int max_mtu;
 674         int broadcast_capable;
 675         int unique_id;
 676         struct qeth_card_blkt blkt;
 677         __u32 csum_mask;
 678         __u32 tx_csum_mask;
 679         enum qeth_ipa_promisc_modes promisc_mode;
 680         __u32 diagass_support;
 681         __u32 hwtrap;
 682 };
 683
 684 struct qeth_card_options {
 685         struct qeth_routing_info route4;
 686         struct qeth_ipa_info ipa4;
 687         struct qeth_ipa_info adp; /*Adapter parameters*/
 688         struct qeth_routing_info route6;
 689         struct qeth_ipa_info ipa6;
 690         struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
 691         int fake_broadcast;
 692         int add_hhlen;
 693         int layer2;
 694         int performance_stats;
 695         int rx_sg_cb;
 696         enum qeth_ipa_isolation_modes isolation;
 697         enum qeth_ipa_isolation_modes prev_isolation;
 698         int sniffer;
 699         enum qeth_cq cq;
 700         char hsuid[9];
 701 };
 702
 703 /*
 704  * thread bits for qeth_card thread masks
 705  */
 706 enum qeth_threads {
 707         QETH_RECOVER_THREAD = 1,
 708 };
 709
 710 struct qeth_osn_info {
 711         int (*assist_cb)(struct net_device *dev, void *data);
 712         int (*data_cb)(struct sk_buff *skb);
 713 };
 714
 715 enum qeth_discipline_id {
 716         QETH_DISCIPLINE_LAYER3 = 0,
 717         QETH_DISCIPLINE_LAYER2 = 1,
 718 };
 719
 720 struct qeth_discipline {
 721         void (*start_poll)(struct ccw_device *, int, unsigned long);
 722         qdio_handler_t *input_handler;
 723         qdio_handler_t *output_handler;
 724         int (*recover)(void *ptr);
 725         int (*setup) (struct ccwgroup_device *);
 726         void (*remove) (struct ccwgroup_device *);
 727         int (*set_online) (struct ccwgroup_device *);
 728         int (*set_offline) (struct ccwgroup_device *);
 729         void (*shutdown)(struct ccwgroup_device *);
 730         int (*prepare) (struct ccwgroup_device *);
 731         void (*complete) (struct ccwgroup_device *);
 732         int (*freeze)(struct ccwgroup_device *);
 733         int (*thaw) (struct ccwgroup_device *);
 734         int (*restore)(struct ccwgroup_device *);
 735         int (*control_event_handler)(struct qeth_card *card,
 736                                         struct qeth_ipa_cmd *cmd);
 737 };
 738
 739 struct qeth_vlan_vid {
 740         struct list_head list;
 741         unsigned short vid;
 742 };
 743
 744 enum qeth_addr_disposition {
 745         QETH_DISP_ADDR_DELETE = 0,
 746         QETH_DISP_ADDR_DO_NOTHING = 1,
 747         QETH_DISP_ADDR_ADD = 2,
 748 };
 749
 750 struct qeth_rx {
 751         int b_count;
 752         int b_index;
 753         struct qdio_buffer_element *b_element;
 754         int e_offset;
 755         int qdio_err;
 756 };
 757
 758 struct carrier_info {
 759         __u8  card_type;
 760         __u16 port_mode;
 761         __u32 port_speed;
 762 };
 763
 764 struct qeth_switch_info {
 765         __u32 capabilities;
 766         __u32 settings;
 767 };
 768
 769 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
 770
 771 struct qeth_card {
 772         struct list_head list;
 773         enum qeth_card_states state;
 774         int lan_online;
 775         spinlock_t lock;
 776         struct ccwgroup_device *gdev;
 777         struct qeth_channel read;
 778         struct qeth_channel write;
 779         struct qeth_channel data;
 780
 781         struct net_device *dev;
 782         struct net_device_stats stats;
 783
 784         struct qeth_card_info info;
 785         struct qeth_token token;
 786         struct qeth_seqno seqno;
 787         struct qeth_card_options options;
 788
 789         wait_queue_head_t wait_q;
 790         spinlock_t vlanlock;
 791         spinlock_t mclock;
 792         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 793         struct list_head vid_list;
 794         DECLARE_HASHTABLE(mac_htable, 4);
 795         DECLARE_HASHTABLE(ip_htable, 4);
 796         DECLARE_HASHTABLE(ip_mc_htable, 4);
 797         struct work_struct kernel_thread_starter;
 798         spinlock_t thread_mask_lock;
 799         unsigned long thread_start_mask;
 800         unsigned long thread_allowed_mask;
 801         unsigned long thread_running_mask;
 802         struct task_struct *recovery_task;
 803         spinlock_t ip_lock;
 804         struct qeth_ipato ipato;
 805         struct list_head cmd_waiter_list;
 806         /* QDIO buffer handling */
 807         struct qeth_qdio_info qdio;
 808         struct qeth_perf_stats perf_stats;
 809         int read_or_write_problem;
 810         struct qeth_osn_info osn_info;
 811         struct qeth_discipline *discipline;
 812         atomic_t force_alloc_skb;
 813         struct service_level qeth_service_level;
 814         struct qdio_ssqd_desc ssqd;
 815         debug_info_t *debug;
 816         struct mutex conf_mutex;
 817         struct mutex discipline_mutex;
 818         struct napi_struct napi;
 819         struct qeth_rx rx;
 820         struct delayed_work buffer_reclaim_work;
 821         int reclaim_index;
 822         struct work_struct close_dev_work;
 823 };
 824
 825 struct qeth_card_list_struct {
 826         struct list_head list;
 827         rwlock_t rwlock;
 828 };
 829
 830 struct qeth_trap_id {
 831         __u16 lparnr;
 832         char vmname[8];
 833         __u8 chpid;
 834         __u8 ssid;
 835         __u16 devno;
 836 } __packed;
 837
 838 /*some helper functions*/
 839 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 840
 841 /**
 842  * qeth_get_elements_for_range() -      find number of SBALEs to cover range.
 843  * @start:                              Start of the address range.
 844  * @end:                                Address after the end of the range.
 845  *
 846  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
 847  * the specified address range.
 848  */
 849 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
 850 {
 851         return PFN_UP(end - 1) - PFN_DOWN(start);
 852 }
 853
 854 static inline int qeth_get_micros(void)
 855 {
 856         return (int) (get_tod_clock() >> 12);
 857 }
 858
 859 static inline int qeth_get_ip_version(struct sk_buff *skb)
 860 {
 861         __be16 *p = &((struct ethhdr *)skb->data)->h_proto;
 862
 863         if (*p == ETH_P_8021Q)
 864                 p += 2;
 865         switch (*p) {
 866         case ETH_P_IPV6:
 867                 return 6;
 868         case ETH_P_IP:
 869                 return 4;
 870         default:
 871                 return 0;
 872         }
 873 }
 874
 875 static inline int qeth_get_ip_protocol(struct sk_buff *skb)
 876 {
 877         return ip_hdr(skb)->protocol;
 878 }
 879
 880 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
 881                 struct qeth_buffer_pool_entry *entry)
 882 {
 883         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
 884 }
 885
 886 static inline int qeth_is_diagass_supported(struct qeth_card *card,
 887                 enum qeth_diags_cmds cmd)
 888 {
 889         return card->info.diagass_support & (__u32)cmd;
 890 }
 891
 892 extern struct qeth_discipline qeth_l2_discipline;
 893 extern struct qeth_discipline qeth_l3_discipline;
 894 extern const struct attribute_group *qeth_generic_attr_groups[];
 895 extern const struct attribute_group *qeth_osn_attr_groups[];
 896 extern struct workqueue_struct *qeth_wq;
 897
 898 int qeth_card_hw_is_reachable(struct qeth_card *);
 899 const char *qeth_get_cardname_short(struct qeth_card *);
 900 int qeth_realloc_buffer_pool(struct qeth_card *, int);
 901 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
 902 void qeth_core_free_discipline(struct qeth_card *);
 903
 904 /* exports for qeth discipline device drivers */
 905 extern struct qeth_card_list_struct qeth_core_card_list;
 906 extern struct kmem_cache *qeth_core_header_cache;
 907 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
 908
 909 void qeth_set_recovery_task(struct qeth_card *);
 910 void qeth_clear_recovery_task(struct qeth_card *);
 911 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
 912 int qeth_threads_running(struct qeth_card *, unsigned long);
 913 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
 914 int qeth_do_run_thread(struct qeth_card *, unsigned long);
 915 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
 916 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
 917 int qeth_core_hardsetup_card(struct qeth_card *);
 918 void qeth_print_status_message(struct qeth_card *);
 919 int qeth_init_qdio_queues(struct qeth_card *);
 920 int qeth_send_startlan(struct qeth_card *);
 921 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
 922                   int (*reply_cb)
 923                   (struct qeth_card *, struct qeth_reply *, unsigned long),
 924                   void *);
 925 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
 926                         enum qeth_ipa_cmds, enum qeth_prot_versions);
 927 int qeth_query_setadapterparms(struct qeth_card *);
 928 int qeth_check_qdio_errors(struct qeth_card *, struct qdio_buffer *,
 929                 unsigned int, const char *);
 930 void qeth_queue_input_buffer(struct qeth_card *, int);
 931 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
 932                 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
 933                 struct qeth_hdr **);
 934 void qeth_schedule_recovery(struct qeth_card *);
 935 void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long);
 936 void qeth_qdio_input_handler(struct ccw_device *,
 937                 unsigned int, unsigned int, int,
 938                 int, unsigned long);
 939 void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
 940                         int, int, int, unsigned long);
 941 void qeth_clear_ipacmd_list(struct qeth_card *);
 942 int qeth_qdio_clear_card(struct qeth_card *, int);
 943 void qeth_clear_working_pool_list(struct qeth_card *);
 944 void qeth_clear_cmd_buffers(struct qeth_channel *);
 945 void qeth_clear_qdio_buffers(struct qeth_card *);
 946 void qeth_setadp_promisc_mode(struct qeth_card *);
 947 struct net_device_stats *qeth_get_stats(struct net_device *);
 948 int qeth_change_mtu(struct net_device *, int);
 949 int qeth_setadpparms_change_macaddr(struct qeth_card *);
 950 void qeth_tx_timeout(struct net_device *);
 951 void qeth_prepare_control_data(struct qeth_card *, int,
 952                                 struct qeth_cmd_buffer *);
 953 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
 954 void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
 955 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
 956 int qeth_mdio_read(struct net_device *, int, int);
 957 int qeth_snmp_command(struct qeth_card *, char __user *);
 958 int qeth_query_oat_command(struct qeth_card *, char __user *);
 959 int qeth_query_switch_attributes(struct qeth_card *card,
 960                                   struct qeth_switch_info *sw_info);
 961 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
 962         int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
 963         void *reply_param);
 964 int qeth_bridgeport_query_ports(struct qeth_card *card,
 965         enum qeth_sbp_roles *role, enum qeth_sbp_states *state);
 966 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);
 967 int qeth_bridgeport_an_set(struct qeth_card *card, int enable);
 968 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
 969 int qeth_get_elements_no(struct qeth_card *, struct sk_buff *, int);
 970 int qeth_get_elements_for_frags(struct sk_buff *);
 971 int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *,
 972                         struct sk_buff *, struct qeth_hdr *, int, int, int);
 973 int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
 974                     struct sk_buff *, struct qeth_hdr *, int);
 975 int qeth_core_get_sset_count(struct net_device *, int);
 976 void qeth_core_get_ethtool_stats(struct net_device *,
 977                                 struct ethtool_stats *, u64 *);
 978 void qeth_core_get_strings(struct net_device *, u32, u8 *);
 979 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
 980 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
 981 int qeth_core_ethtool_get_settings(struct net_device *, struct ethtool_cmd *);
 982 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
 983 int qeth_hdr_chk_and_bounce(struct sk_buff *, struct qeth_hdr **, int);
 984 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
 985 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
 986 int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
 987 void qeth_trace_features(struct qeth_card *);
 988 void qeth_close_dev(struct qeth_card *);
 989 int qeth_send_simple_setassparms(struct qeth_card *, enum qeth_ipa_funcs,
 990                                  __u16, long);
 991 int qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *, __u16,
 992                           long,
 993                           int (*reply_cb)(struct qeth_card *,
 994                                           struct qeth_reply *, unsigned long),
 995                           void *);
 996 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
 997 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
 998                                                  enum qeth_ipa_funcs,
 999                                                  __u16, __u16,
1000                                                  enum qeth_prot_versions);
1001 int qeth_set_features(struct net_device *, netdev_features_t);
1002 int qeth_recover_features(struct net_device *);
1003 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1004
1005 /* exports for OSN */
1006 int qeth_osn_assist(struct net_device *, void *, int);
1007 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
1008                 int (*assist_cb)(struct net_device *, void *),
1009                 int (*data_cb)(struct sk_buff *));
1010 void qeth_osn_deregister(struct net_device *);
1011
1012 #endif /* __QETH_CORE_H__ */