drivers/s390/net/qeth.h

   1 #ifndef __QETH_H__
   2 #define __QETH_H__
   3
   4 #include <linux/if.h>
   5 #include <linux/if_arp.h>
   6
   7 #include <linux/if_tr.h>
   8 #include <linux/trdevice.h>
   9 #include <linux/etherdevice.h>
  10 #include <linux/if_vlan.h>
  11 #include <linux/ctype.h>
  12
  13 #include <net/ipv6.h>
  14 #include <linux/in6.h>
  15 #include <net/if_inet6.h>
  16 #include <net/addrconf.h>
  17
  18
  19 #include <linux/bitops.h>
  20
  21 #include <asm/debug.h>
  22 #include <asm/qdio.h>
  23 #include <asm/ccwdev.h>
  24 #include <asm/ccwgroup.h>
  25
  26 #include "qeth_mpc.h"
  27
  28 #ifdef CONFIG_QETH_IPV6
  29 #define QETH_VERSION_IPV6       ":IPv6"
  30 #else
  31 #define QETH_VERSION_IPV6       ""
  32 #endif
  33 #ifdef CONFIG_QETH_VLAN
  34 #define QETH_VERSION_VLAN       ":VLAN"
  35 #else
  36 #define QETH_VERSION_VLAN       ""
  37 #endif
  38
  39 /**
  40  * Debug Facility stuff
  41  */
  42 #define QETH_DBF_SETUP_NAME "qeth_setup"
  43 #define QETH_DBF_SETUP_LEN 8
  44 #define QETH_DBF_SETUP_PAGES 8
  45 #define QETH_DBF_SETUP_NR_AREAS 1
  46 #define QETH_DBF_SETUP_LEVEL 5
  47
  48 #define QETH_DBF_MISC_NAME "qeth_misc"
  49 #define QETH_DBF_MISC_LEN 128
  50 #define QETH_DBF_MISC_PAGES 2
  51 #define QETH_DBF_MISC_NR_AREAS 1
  52 #define QETH_DBF_MISC_LEVEL 2
  53
  54 #define QETH_DBF_DATA_NAME "qeth_data"
  55 #define QETH_DBF_DATA_LEN 96
  56 #define QETH_DBF_DATA_PAGES 8
  57 #define QETH_DBF_DATA_NR_AREAS 1
  58 #define QETH_DBF_DATA_LEVEL 2
  59
  60 #define QETH_DBF_CONTROL_NAME "qeth_control"
  61 #define QETH_DBF_CONTROL_LEN 256
  62 #define QETH_DBF_CONTROL_PAGES 8
  63 #define QETH_DBF_CONTROL_NR_AREAS 2
  64 #define QETH_DBF_CONTROL_LEVEL 5
  65
  66 #define QETH_DBF_TRACE_NAME "qeth_trace"
  67 #define QETH_DBF_TRACE_LEN 8
  68 #define QETH_DBF_TRACE_PAGES 4
  69 #define QETH_DBF_TRACE_NR_AREAS 2
  70 #define QETH_DBF_TRACE_LEVEL 3
  71 extern debug_info_t *qeth_dbf_trace;
  72
  73 #define QETH_DBF_SENSE_NAME "qeth_sense"
  74 #define QETH_DBF_SENSE_LEN 64
  75 #define QETH_DBF_SENSE_PAGES 2
  76 #define QETH_DBF_SENSE_NR_AREAS 1
  77 #define QETH_DBF_SENSE_LEVEL 2
  78
  79 #define QETH_DBF_QERR_NAME "qeth_qerr"
  80 #define QETH_DBF_QERR_LEN 8
  81 #define QETH_DBF_QERR_PAGES 2
  82 #define QETH_DBF_QERR_NR_AREAS 2
  83 #define QETH_DBF_QERR_LEVEL 2
  84
  85 #define QETH_DBF_TEXT(name,level,text) \
  86         do { \
  87                 debug_text_event(qeth_dbf_##name,level,text); \
  88         } while (0)
  89
  90 #define QETH_DBF_HEX(name,level,addr,len) \
  91         do { \
  92                 debug_event(qeth_dbf_##name,level,(void*)(addr),len); \
  93         } while (0)
  94
  95 DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);
  96
  97 #define QETH_DBF_TEXT_(name,level,text...)                              \
  98         do {                                                            \
  99                 char* dbf_txt_buf = get_cpu_var(qeth_dbf_txt_buf);      \
 100                 sprintf(dbf_txt_buf, text);                             \
 101                 debug_text_event(qeth_dbf_##name,level,dbf_txt_buf);    \
 102                 put_cpu_var(qeth_dbf_txt_buf);                          \
 103         } while (0)
 104
 105 #define QETH_DBF_SPRINTF(name,level,text...) \
 106         do { \
 107                 debug_sprintf_event(qeth_dbf_trace, level, ##text ); \
 108                 debug_sprintf_event(qeth_dbf_trace, level, text ); \
 109         } while (0)
 110
 111 /**
 112  * some more debug stuff
 113  */
 114 #define PRINTK_HEADER   "qeth: "
 115
 116 #define HEXDUMP16(importance,header,ptr) \
 117 PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 118                    "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
 119                    *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
 120                    *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
 121                    *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
 122                    *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
 123                    *(((char*)ptr)+12),*(((char*)ptr)+13), \
 124                    *(((char*)ptr)+14),*(((char*)ptr)+15)); \
 125 PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 126                    "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
 127                    *(((char*)ptr)+16),*(((char*)ptr)+17), \
 128                    *(((char*)ptr)+18),*(((char*)ptr)+19), \
 129                    *(((char*)ptr)+20),*(((char*)ptr)+21), \
 130                    *(((char*)ptr)+22),*(((char*)ptr)+23), \
 131                    *(((char*)ptr)+24),*(((char*)ptr)+25), \
 132                    *(((char*)ptr)+26),*(((char*)ptr)+27), \
 133                    *(((char*)ptr)+28),*(((char*)ptr)+29), \
 134                    *(((char*)ptr)+30),*(((char*)ptr)+31));
 135
 136 static inline void
 137 qeth_hex_dump(unsigned char *buf, size_t len)
 138 {
 139         size_t i;
 140
 141         for (i = 0; i < len; i++) {
 142                 if (i && !(i % 16))
 143                         printk("\n");
 144                 printk("%02x ", *(buf + i));
 145         }
 146         printk("\n");
 147 }
 148
 149 #define SENSE_COMMAND_REJECT_BYTE 0
 150 #define SENSE_COMMAND_REJECT_FLAG 0x80
 151 #define SENSE_RESETTING_EVENT_BYTE 1
 152 #define SENSE_RESETTING_EVENT_FLAG 0x80
 153
 154 /*
 155  * Common IO related definitions
 156  */
 157 extern struct device *qeth_root_dev;
 158 extern struct ccw_driver qeth_ccw_driver;
 159 extern struct ccwgroup_driver qeth_ccwgroup_driver;
 160
 161 #define CARD_RDEV(card) card->read.ccwdev
 162 #define CARD_WDEV(card) card->write.ccwdev
 163 #define CARD_DDEV(card) card->data.ccwdev
 164 #define CARD_BUS_ID(card) card->gdev->dev.bus_id
 165 #define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id
 166 #define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id
 167 #define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id
 168 #define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id
 169
 170 #define CARD_FROM_CDEV(cdev) (struct qeth_card *) \
 171                 ((struct ccwgroup_device *)cdev->dev.driver_data)\
 172                 ->dev.driver_data;
 173
 174 /**
 175  * card stuff
 176  */
 177 struct qeth_perf_stats {
 178         unsigned int bufs_rec;
 179         unsigned int bufs_sent;
 180
 181         unsigned int skbs_sent_pack;
 182         unsigned int bufs_sent_pack;
 183
 184         unsigned int sc_dp_p;
 185         unsigned int sc_p_dp;
 186         /* qdio_input_handler: number of times called, time spent in */
 187         __u64 inbound_start_time;
 188         unsigned int inbound_cnt;
 189         unsigned int inbound_time;
 190         /* qeth_send_packet: number of times called, time spent in */
 191         __u64 outbound_start_time;
 192         unsigned int outbound_cnt;
 193         unsigned int outbound_time;
 194         /* qdio_output_handler: number of times called, time spent in */
 195         __u64 outbound_handler_start_time;
 196         unsigned int outbound_handler_cnt;
 197         unsigned int outbound_handler_time;
 198         /* number of calls to and time spent in do_QDIO for inbound queue */
 199         __u64 inbound_do_qdio_start_time;
 200         unsigned int inbound_do_qdio_cnt;
 201         unsigned int inbound_do_qdio_time;
 202         /* number of calls to and time spent in do_QDIO for outbound queues */
 203         __u64 outbound_do_qdio_start_time;
 204         unsigned int outbound_do_qdio_cnt;
 205         unsigned int outbound_do_qdio_time;
 206         /* eddp data */
 207         unsigned int large_send_bytes;
 208         unsigned int large_send_cnt;
 209         unsigned int sg_skbs_sent;
 210         unsigned int sg_frags_sent;
 211         /* initial values when measuring starts */
 212         unsigned long initial_rx_packets;
 213         unsigned long initial_tx_packets;
 214         /* inbound scatter gather data */
 215         unsigned int sg_skbs_rx;
 216         unsigned int sg_frags_rx;
 217         unsigned int sg_alloc_page_rx;
 218 };
 219
 220 /* Routing stuff */
 221 struct qeth_routing_info {
 222         enum qeth_routing_types type;
 223 };
 224
 225 /* IPA stuff */
 226 struct qeth_ipa_info {
 227         __u32 supported_funcs;
 228         __u32 enabled_funcs;
 229 };
 230
 231 static inline int
 232 qeth_is_ipa_supported(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
 233 {
 234         return (ipa->supported_funcs & func);
 235 }
 236
 237 static inline int
 238 qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
 239 {
 240         return (ipa->supported_funcs & ipa->enabled_funcs & func);
 241 }
 242
 243 #define qeth_adp_supported(c,f) \
 244         qeth_is_ipa_supported(&c->options.adp, f)
 245 #define qeth_adp_enabled(c,f) \
 246         qeth_is_ipa_enabled(&c->options.adp, f)
 247 #define qeth_is_supported(c,f) \
 248         qeth_is_ipa_supported(&c->options.ipa4, f)
 249 #define qeth_is_enabled(c,f) \
 250         qeth_is_ipa_enabled(&c->options.ipa4, f)
 251 #ifdef CONFIG_QETH_IPV6
 252 #define qeth_is_supported6(c,f) \
 253         qeth_is_ipa_supported(&c->options.ipa6, f)
 254 #define qeth_is_enabled6(c,f) \
 255         qeth_is_ipa_enabled(&c->options.ipa6, f)
 256 #else /* CONFIG_QETH_IPV6 */
 257 #define qeth_is_supported6(c,f) 0
 258 #define qeth_is_enabled6(c,f) 0
 259 #endif /* CONFIG_QETH_IPV6 */
 260 #define qeth_is_ipafunc_supported(c,prot,f) \
 261          (prot==QETH_PROT_IPV6)? qeth_is_supported6(c,f):qeth_is_supported(c,f)
 262 #define qeth_is_ipafunc_enabled(c,prot,f) \
 263          (prot==QETH_PROT_IPV6)? qeth_is_enabled6(c,f):qeth_is_enabled(c,f)
 264
 265
 266 #define QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT 0x0101
 267 #define QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT 0x0101
 268 #define QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT 0x4108
 269 #define QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT 0x5108
 270
 271 #define QETH_MODELLIST_ARRAY \
 272         {{0x1731,0x01,0x1732,0x01,QETH_CARD_TYPE_OSAE,1, \
 273         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
 274         QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
 275         QETH_MAX_QUEUES,0}, \
 276         {0x1731,0x05,0x1732,0x05,QETH_CARD_TYPE_IQD,0, \
 277         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
 278         QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
 279         QETH_MAX_QUEUES,0x103}, \
 280         {0x1731,0x06,0x1732,0x06,QETH_CARD_TYPE_OSN,0, \
 281         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
 282         QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
 283         QETH_MAX_QUEUES,0}, \
 284         {0,0,0,0,0,0,0,0,0}}
 285
 286 #define QETH_REAL_CARD          1
 287 #define QETH_VLAN_CARD          2
 288 #define QETH_BUFSIZE            4096
 289
 290 /**
 291  * some more defs
 292  */
 293 #define IF_NAME_LEN             16
 294 #define QETH_TX_TIMEOUT         100 * HZ
 295 #define QETH_RCD_TIMEOUT        60 * HZ
 296 #define QETH_HEADER_SIZE        32
 297 #define MAX_PORTNO              15
 298 #define QETH_FAKE_LL_LEN_ETH    ETH_HLEN
 299 #define QETH_FAKE_LL_LEN_TR     (sizeof(struct trh_hdr)-TR_MAXRIFLEN+sizeof(struct trllc))
 300 #define QETH_FAKE_LL_V6_ADDR_POS 24
 301
 302 /*IPv6 address autoconfiguration stuff*/
 303 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 304 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 305
 306 /*****************************************************************************/
 307 /* QDIO queue and buffer handling                                            */
 308 /*****************************************************************************/
 309 #define QETH_MAX_QUEUES 4
 310 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 311 #define QETH_IN_BUF_COUNT_DEFAULT 16
 312 #define QETH_IN_BUF_COUNT_MIN 8
 313 #define QETH_IN_BUF_COUNT_MAX 128
 314 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 315 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 316                 ((card)->qdio.in_buf_pool.buf_count / 2)
 317
 318 /* buffers we have to be behind before we get a PCI */
 319 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 320 /*enqueued free buffers left before we get a PCI*/
 321 #define QETH_PCI_THRESHOLD_B(card) 0
 322 /*not used unless the microcode gets patched*/
 323 #define QETH_PCI_TIMER_VALUE(card) 3
 324
 325 #define QETH_MIN_INPUT_THRESHOLD 1
 326 #define QETH_MAX_INPUT_THRESHOLD 500
 327 #define QETH_MIN_OUTPUT_THRESHOLD 1
 328 #define QETH_MAX_OUTPUT_THRESHOLD 300
 329
 330 /* priority queing */
 331 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 332 #define QETH_DEFAULT_QUEUE    2
 333 #define QETH_NO_PRIO_QUEUEING 0
 334 #define QETH_PRIO_Q_ING_PREC  1
 335 #define QETH_PRIO_Q_ING_TOS   2
 336 #define IP_TOS_LOWDELAY 0x10
 337 #define IP_TOS_HIGHTHROUGHPUT 0x08
 338 #define IP_TOS_HIGHRELIABILITY 0x04
 339 #define IP_TOS_NOTIMPORTANT 0x02
 340
 341 /* Packing */
 342 #define QETH_LOW_WATERMARK_PACK  2
 343 #define QETH_HIGH_WATERMARK_PACK 5
 344 #define QETH_WATERMARK_PACK_FUZZ 1
 345
 346 #define QETH_IP_HEADER_SIZE 40
 347
 348 /* large receive scatter gather copy break */
 349 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
 350
 351 struct qeth_hdr_layer3 {
 352         __u8  id;
 353         __u8  flags;
 354         __u16 inbound_checksum; /*TSO:__u16 seqno */
 355         __u32 token;            /*TSO: __u32 reserved */
 356         __u16 length;
 357         __u8  vlan_prio;
 358         __u8  ext_flags;
 359         __u16 vlan_id;
 360         __u16 frame_offset;
 361         __u8  dest_addr[16];
 362 } __attribute__ ((packed));
 363
 364 struct qeth_hdr_layer2 {
 365         __u8 id;
 366         __u8 flags[3];
 367         __u8 port_no;
 368         __u8 hdr_length;
 369         __u16 pkt_length;
 370         __u16 seq_no;
 371         __u16 vlan_id;
 372         __u32 reserved;
 373         __u8 reserved2[16];
 374 } __attribute__ ((packed));
 375
 376 struct qeth_hdr_osn {
 377         __u8 id;
 378         __u8 reserved;
 379         __u16 seq_no;
 380         __u16 reserved2;
 381         __u16 control_flags;
 382         __u16 pdu_length;
 383         __u8 reserved3[18];
 384         __u32 ccid;
 385 } __attribute__ ((packed));
 386
 387 struct qeth_hdr {
 388         union {
 389                 struct qeth_hdr_layer2 l2;
 390                 struct qeth_hdr_layer3 l3;
 391                 struct qeth_hdr_osn    osn;
 392         } hdr;
 393 } __attribute__ ((packed));
 394
 395 /*TCP Segmentation Offload header*/
 396 struct qeth_hdr_ext_tso {
 397         __u16 hdr_tot_len;
 398         __u8  imb_hdr_no;
 399         __u8  reserved;
 400         __u8  hdr_type;
 401         __u8  hdr_version;
 402         __u16 hdr_len;
 403         __u32 payload_len;
 404         __u16 mss;
 405         __u16 dg_hdr_len;
 406         __u8  padding[16];
 407 } __attribute__ ((packed));
 408
 409 struct qeth_hdr_tso {
 410         struct qeth_hdr hdr;    /*hdr->hdr.l3.xxx*/
 411         struct qeth_hdr_ext_tso ext;
 412 } __attribute__ ((packed));
 413
 414
 415 /* flags for qeth_hdr.flags */
 416 #define QETH_HDR_PASSTHRU 0x10
 417 #define QETH_HDR_IPV6     0x80
 418 #define QETH_HDR_CAST_MASK 0x07
 419 enum qeth_cast_flags {
 420         QETH_CAST_UNICAST   = 0x06,
 421         QETH_CAST_MULTICAST = 0x04,
 422         QETH_CAST_BROADCAST = 0x05,
 423         QETH_CAST_ANYCAST   = 0x07,
 424         QETH_CAST_NOCAST    = 0x00,
 425 };
 426
 427 enum qeth_layer2_frame_flags {
 428         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 429         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 430         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 431         QETH_LAYER2_FLAG_VLAN      = 0x10,
 432 };
 433
 434 enum qeth_header_ids {
 435         QETH_HEADER_TYPE_LAYER3 = 0x01,
 436         QETH_HEADER_TYPE_LAYER2 = 0x02,
 437         QETH_HEADER_TYPE_TSO    = 0x03,
 438         QETH_HEADER_TYPE_OSN    = 0x04,
 439 };
 440 /* flags for qeth_hdr.ext_flags */
 441 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 442 #define QETH_HDR_EXT_TOKEN_ID         0x02
 443 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 444 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 445 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 446 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 447 #define QETH_HDR_EXT_UDP_TSO          0x40 /*bit off for TCP*/
 448
 449 static inline int
 450 qeth_is_last_sbale(struct qdio_buffer_element *sbale)
 451 {
 452         return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
 453 }
 454
 455 enum qeth_qdio_buffer_states {
 456         /*
 457          * inbound: read out by driver; owned by hardware in order to be filled
 458          * outbound: owned by driver in order to be filled
 459          */
 460         QETH_QDIO_BUF_EMPTY,
 461         /*
 462          * inbound: filled by hardware; owned by driver in order to be read out
 463          * outbound: filled by driver; owned by hardware in order to be sent
 464          */
 465         QETH_QDIO_BUF_PRIMED,
 466 };
 467
 468 enum qeth_qdio_info_states {
 469         QETH_QDIO_UNINITIALIZED,
 470         QETH_QDIO_ALLOCATED,
 471         QETH_QDIO_ESTABLISHED,
 472         QETH_QDIO_CLEANING
 473 };
 474
 475 struct qeth_buffer_pool_entry {
 476         struct list_head list;
 477         struct list_head init_list;
 478         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 479 };
 480
 481 struct qeth_qdio_buffer_pool {
 482         struct list_head entry_list;
 483         int buf_count;
 484 };
 485
 486 struct qeth_qdio_buffer {
 487         struct qdio_buffer *buffer;
 488         volatile enum qeth_qdio_buffer_states state;
 489         /* the buffer pool entry currently associated to this buffer */
 490         struct qeth_buffer_pool_entry *pool_entry;
 491 };
 492
 493 struct qeth_qdio_q {
 494         struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 495         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 496         /*
 497          * buf_to_init means "buffer must be initialized by driver and must
 498          * be made available for hardware" -> state is set to EMPTY
 499          */
 500         volatile int next_buf_to_init;
 501 } __attribute__ ((aligned(256)));
 502
 503 /* possible types of qeth large_send support */
 504 enum qeth_large_send_types {
 505         QETH_LARGE_SEND_NO,
 506         QETH_LARGE_SEND_EDDP,
 507         QETH_LARGE_SEND_TSO,
 508 };
 509
 510 struct qeth_qdio_out_buffer {
 511         struct qdio_buffer *buffer;
 512         atomic_t state;
 513         volatile int next_element_to_fill;
 514         struct sk_buff_head skb_list;
 515         struct list_head ctx_list;
 516 };
 517
 518 struct qeth_card;
 519
 520 enum qeth_out_q_states {
 521        QETH_OUT_Q_UNLOCKED,
 522        QETH_OUT_Q_LOCKED,
 523        QETH_OUT_Q_LOCKED_FLUSH,
 524 };
 525
 526 struct qeth_qdio_out_q {
 527         struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 528         struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 529         int queue_no;
 530         struct qeth_card *card;
 531         atomic_t state;
 532         volatile int do_pack;
 533         /*
 534          * index of buffer to be filled by driver; state EMPTY or PACKING
 535          */
 536         volatile int next_buf_to_fill;
 537         /*
 538          * number of buffers that are currently filled (PRIMED)
 539          * -> these buffers are hardware-owned
 540          */
 541         atomic_t used_buffers;
 542         /* indicates whether PCI flag must be set (or if one is outstanding) */
 543         atomic_t set_pci_flags_count;
 544 } __attribute__ ((aligned(256)));
 545
 546 struct qeth_qdio_info {
 547         atomic_t state;
 548         /* input */
 549         struct qeth_qdio_q *in_q;
 550         struct qeth_qdio_buffer_pool in_buf_pool;
 551         struct qeth_qdio_buffer_pool init_pool;
 552         int in_buf_size;
 553
 554         /* output */
 555         int no_out_queues;
 556         struct qeth_qdio_out_q **out_qs;
 557
 558         /* priority queueing */
 559         int do_prio_queueing;
 560         int default_out_queue;
 561 };
 562
 563 enum qeth_send_errors {
 564         QETH_SEND_ERROR_NONE,
 565         QETH_SEND_ERROR_LINK_FAILURE,
 566         QETH_SEND_ERROR_RETRY,
 567         QETH_SEND_ERROR_KICK_IT,
 568 };
 569
 570 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
 571 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
 572 /* tr mc mac is longer, but that will be enough to detect mc frames */
 573 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
 574 #define QETH_TR_MAC_C        0x0300 /* canonical */
 575
 576 #define DEFAULT_ADD_HHLEN 0
 577 #define MAX_ADD_HHLEN 1024
 578
 579 /**
 580  * buffer stuff for read channel
 581  */
 582 #define QETH_CMD_BUFFER_NO      8
 583
 584 /**
 585  *  channel state machine
 586  */
 587 enum qeth_channel_states {
 588         CH_STATE_UP,
 589         CH_STATE_DOWN,
 590         CH_STATE_ACTIVATING,
 591         CH_STATE_HALTED,
 592         CH_STATE_STOPPED,
 593         CH_STATE_RCD,
 594         CH_STATE_RCD_DONE,
 595 };
 596 /**
 597  * card state machine
 598  */
 599 enum qeth_card_states {
 600         CARD_STATE_DOWN,
 601         CARD_STATE_HARDSETUP,
 602         CARD_STATE_SOFTSETUP,
 603         CARD_STATE_UP,
 604         CARD_STATE_RECOVER,
 605 };
 606
 607 /**
 608  * Protocol versions
 609  */
 610 enum qeth_prot_versions {
 611         QETH_PROT_IPV4 = 0x0004,
 612         QETH_PROT_IPV6 = 0x0006,
 613 };
 614
 615 enum qeth_ip_types {
 616         QETH_IP_TYPE_NORMAL,
 617         QETH_IP_TYPE_VIPA,
 618         QETH_IP_TYPE_RXIP,
 619         QETH_IP_TYPE_DEL_ALL_MC,
 620 };
 621
 622 enum qeth_cmd_buffer_state {
 623         BUF_STATE_FREE,
 624         BUF_STATE_LOCKED,
 625         BUF_STATE_PROCESSED,
 626 };
 627 /**
 628  * IP address and multicast list
 629  */
 630 struct qeth_ipaddr {
 631         struct list_head entry;
 632         enum qeth_ip_types type;
 633         enum qeth_ipa_setdelip_flags set_flags;
 634         enum qeth_ipa_setdelip_flags del_flags;
 635         int is_multicast;
 636         volatile int users;
 637         enum qeth_prot_versions proto;
 638         unsigned char mac[OSA_ADDR_LEN];
 639         union {
 640                 struct {
 641                         unsigned int addr;
 642                         unsigned int mask;
 643                 } a4;
 644                 struct {
 645                         struct in6_addr addr;
 646                         unsigned int pfxlen;
 647                 } a6;
 648         } u;
 649 };
 650
 651 struct qeth_ipato_entry {
 652         struct list_head entry;
 653         enum qeth_prot_versions proto;
 654         char addr[16];
 655         int mask_bits;
 656 };
 657
 658 struct qeth_ipato {
 659         int enabled;
 660         int invert4;
 661         int invert6;
 662         struct list_head entries;
 663 };
 664
 665 struct qeth_channel;
 666
 667 struct qeth_cmd_buffer {
 668         enum qeth_cmd_buffer_state state;
 669         struct qeth_channel *channel;
 670         unsigned char *data;
 671         int rc;
 672         void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
 673 };
 674
 675
 676 /**
 677  * definition of a qeth channel, used for read and write
 678  */
 679 struct qeth_channel {
 680         enum qeth_channel_states state;
 681         struct ccw1 ccw;
 682         spinlock_t iob_lock;
 683         wait_queue_head_t wait_q;
 684         struct tasklet_struct irq_tasklet;
 685         struct ccw_device *ccwdev;
 686 /*command buffer for control data*/
 687         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 688         atomic_t irq_pending;
 689         volatile int io_buf_no;
 690         volatile int buf_no;
 691 };
 692
 693 /**
 694  *  OSA card related definitions
 695  */
 696 struct qeth_token {
 697         __u32 issuer_rm_w;
 698         __u32 issuer_rm_r;
 699         __u32 cm_filter_w;
 700         __u32 cm_filter_r;
 701         __u32 cm_connection_w;
 702         __u32 cm_connection_r;
 703         __u32 ulp_filter_w;
 704         __u32 ulp_filter_r;
 705         __u32 ulp_connection_w;
 706         __u32 ulp_connection_r;
 707 };
 708
 709 struct qeth_seqno {
 710         __u32 trans_hdr;
 711         __u32 pdu_hdr;
 712         __u32 pdu_hdr_ack;
 713         __u16 ipa;
 714         __u32 pkt_seqno;
 715 };
 716
 717 struct qeth_reply {
 718         struct list_head list;
 719         wait_queue_head_t wait_q;
 720         int (*callback)(struct qeth_card *,struct qeth_reply *,unsigned long);
 721         u32 seqno;
 722         unsigned long offset;
 723         atomic_t received;
 724         int rc;
 725         void *param;
 726         struct qeth_card *card;
 727         atomic_t refcnt;
 728 };
 729
 730
 731 struct qeth_card_blkt {
 732         int time_total;
 733         int inter_packet;
 734         int inter_packet_jumbo;
 735 };
 736
 737 #define QETH_BROADCAST_WITH_ECHO    0x01
 738 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
 739 #define QETH_LAYER2_MAC_READ        0x01
 740 #define QETH_LAYER2_MAC_REGISTERED  0x02
 741 struct qeth_card_info {
 742         unsigned short unit_addr2;
 743         unsigned short cula;
 744         unsigned short chpid;
 745         __u16 func_level;
 746         char mcl_level[QETH_MCL_LENGTH + 1];
 747         int guestlan;
 748         int mac_bits;
 749         int portname_required;
 750         int portno;
 751         char portname[9];
 752         enum qeth_card_types type;
 753         enum qeth_link_types link_type;
 754         int is_multicast_different;
 755         int initial_mtu;
 756         int max_mtu;
 757         int broadcast_capable;
 758         int unique_id;
 759         struct qeth_card_blkt blkt;
 760         __u32 csum_mask;
 761         enum qeth_ipa_promisc_modes promisc_mode;
 762 };
 763
 764 struct qeth_card_options {
 765         struct qeth_routing_info route4;
 766         struct qeth_ipa_info ipa4;
 767         struct qeth_ipa_info adp; /*Adapter parameters*/
 768 #ifdef CONFIG_QETH_IPV6
 769         struct qeth_routing_info route6;
 770         struct qeth_ipa_info ipa6;
 771 #endif /* QETH_IPV6 */
 772         enum qeth_checksum_types checksum_type;
 773         int broadcast_mode;
 774         int macaddr_mode;
 775         int fake_broadcast;
 776         int add_hhlen;
 777         int fake_ll;
 778         int layer2;
 779         enum qeth_large_send_types large_send;
 780         int performance_stats;
 781         int rx_sg_cb;
 782 };
 783
 784 /*
 785  * thread bits for qeth_card thread masks
 786  */
 787 enum qeth_threads {
 788         QETH_SET_IP_THREAD  = 1,
 789         QETH_RECOVER_THREAD = 2,
 790         QETH_SET_PROMISC_MODE_THREAD = 4,
 791 };
 792
 793 struct qeth_osn_info {
 794         int (*assist_cb)(struct net_device *dev, void *data);
 795         int (*data_cb)(struct sk_buff *skb);
 796 };
 797
 798 struct qeth_card {
 799         struct list_head list;
 800         enum qeth_card_states state;
 801         int lan_online;
 802         spinlock_t lock;
 803 /*hardware and sysfs stuff*/
 804         struct ccwgroup_device *gdev;
 805         struct qeth_channel read;
 806         struct qeth_channel write;
 807         struct qeth_channel data;
 808
 809         struct net_device *dev;
 810         struct net_device_stats stats;
 811
 812         struct qeth_card_info info;
 813         struct qeth_token token;
 814         struct qeth_seqno seqno;
 815         struct qeth_card_options options;
 816
 817         wait_queue_head_t wait_q;
 818 #ifdef CONFIG_QETH_VLAN
 819         spinlock_t vlanlock;
 820         struct vlan_group *vlangrp;
 821 #endif
 822         struct work_struct kernel_thread_starter;
 823         spinlock_t thread_mask_lock;
 824         volatile unsigned long thread_start_mask;
 825         volatile unsigned long thread_allowed_mask;
 826         volatile unsigned long thread_running_mask;
 827         spinlock_t ip_lock;
 828         struct list_head ip_list;
 829         struct list_head *ip_tbd_list;
 830         struct qeth_ipato ipato;
 831         struct list_head cmd_waiter_list;
 832         /* QDIO buffer handling */
 833         struct qeth_qdio_info qdio;
 834         struct qeth_perf_stats perf_stats;
 835         int use_hard_stop;
 836         const struct header_ops *orig_header_ops;
 837         struct qeth_osn_info osn_info;
 838         atomic_t force_alloc_skb;
 839 };
 840
 841 struct qeth_card_list_struct {
 842         struct list_head list;
 843         rwlock_t rwlock;
 844 };
 845
 846 extern struct qeth_card_list_struct qeth_card_list;
 847
 848 /*notifier list */
 849 struct qeth_notify_list_struct {
 850         struct list_head list;
 851         struct task_struct *task;
 852         int signum;
 853 };
 854 extern spinlock_t qeth_notify_lock;
 855 extern struct list_head qeth_notify_list;
 856
 857 /*some helper functions*/
 858
 859 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 860
 861 static inline __u8
 862 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
 863 {
 864         switch (link_type) {
 865         case QETH_LINK_TYPE_HSTR:
 866                 return 2;
 867         default:
 868                 return 1;
 869         }
 870 }
 871
 872 static inline struct sk_buff *
 873 qeth_realloc_headroom(struct qeth_card *card, struct sk_buff *skb, int size)
 874 {
 875         struct sk_buff *new_skb = skb;
 876
 877         if (skb_headroom(skb) >= size)
 878                 return skb;
 879         new_skb = skb_realloc_headroom(skb, size);
 880         if (!new_skb)
 881                 PRINT_ERR("Could not realloc headroom for qeth_hdr "
 882                           "on interface %s", QETH_CARD_IFNAME(card));
 883         return new_skb;
 884 }
 885
 886 static inline struct sk_buff *
 887 qeth_pskb_unshare(struct sk_buff *skb, gfp_t pri)
 888 {
 889         struct sk_buff *nskb;
 890         if (!skb_cloned(skb))
 891                 return skb;
 892         nskb = skb_copy(skb, pri);
 893         return nskb;
 894 }
 895
 896 static inline void *
 897 qeth_push_skb(struct qeth_card *card, struct sk_buff *skb, int size)
 898 {
 899         void *hdr;
 900
 901         hdr = (void *) skb_push(skb, size);
 902         /*
 903          * sanity check, the Linux memory allocation scheme should
 904          * never present us cases like this one (the qdio header size plus
 905          * the first 40 bytes of the paket cross a 4k boundary)
 906          */
 907         if ((((unsigned long) hdr) & (~(PAGE_SIZE - 1))) !=
 908             (((unsigned long) hdr + size +
 909               QETH_IP_HEADER_SIZE) & (~(PAGE_SIZE - 1)))) {
 910                 PRINT_ERR("Misaligned packet on interface %s. Discarded.",
 911                           QETH_CARD_IFNAME(card));
 912                 return NULL;
 913         }
 914         return hdr;
 915 }
 916
 917
 918 static inline int
 919 qeth_get_hlen(__u8 link_type)
 920 {
 921 #ifdef CONFIG_QETH_IPV6
 922         switch (link_type) {
 923         case QETH_LINK_TYPE_HSTR:
 924         case QETH_LINK_TYPE_LANE_TR:
 925                 return sizeof(struct qeth_hdr_tso) + TR_HLEN;
 926         default:
 927 #ifdef CONFIG_QETH_VLAN
 928                 return sizeof(struct qeth_hdr_tso) + VLAN_ETH_HLEN;
 929 #else
 930                 return sizeof(struct qeth_hdr_tso) + ETH_HLEN;
 931 #endif
 932         }
 933 #else  /* CONFIG_QETH_IPV6 */
 934 #ifdef CONFIG_QETH_VLAN
 935         return sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
 936 #else
 937         return sizeof(struct qeth_hdr_tso);
 938 #endif
 939 #endif /* CONFIG_QETH_IPV6 */
 940 }
 941
 942 static inline unsigned short
 943 qeth_get_netdev_flags(struct qeth_card *card)
 944 {
 945         if (card->options.layer2 &&
 946            (card->info.type == QETH_CARD_TYPE_OSAE))
 947                 return 0;
 948         switch (card->info.type) {
 949         case QETH_CARD_TYPE_IQD:
 950         case QETH_CARD_TYPE_OSN:
 951                 return IFF_NOARP;
 952 #ifdef CONFIG_QETH_IPV6
 953         default:
 954                 return 0;
 955 #else
 956         default:
 957                 return IFF_NOARP;
 958 #endif
 959         }
 960 }
 961
 962 static inline int
 963 qeth_get_initial_mtu_for_card(struct qeth_card * card)
 964 {
 965         switch (card->info.type) {
 966         case QETH_CARD_TYPE_UNKNOWN:
 967                 return 1500;
 968         case QETH_CARD_TYPE_IQD:
 969                 return card->info.max_mtu;
 970         case QETH_CARD_TYPE_OSAE:
 971                 switch (card->info.link_type) {
 972                 case QETH_LINK_TYPE_HSTR:
 973                 case QETH_LINK_TYPE_LANE_TR:
 974                         return 2000;
 975                 default:
 976                         return 1492;
 977                 }
 978         default:
 979                 return 1500;
 980         }
 981 }
 982
 983 static inline int
 984 qeth_get_max_mtu_for_card(int cardtype)
 985 {
 986         switch (cardtype) {
 987
 988         case QETH_CARD_TYPE_UNKNOWN:
 989         case QETH_CARD_TYPE_OSAE:
 990         case QETH_CARD_TYPE_OSN:
 991                 return 61440;
 992         case QETH_CARD_TYPE_IQD:
 993                 return 57344;
 994         default:
 995                 return 1500;
 996         }
 997 }
 998
 999 static inline int
1000 qeth_get_mtu_out_of_mpc(int cardtype)
1001 {
1002         switch (cardtype) {
1003         case QETH_CARD_TYPE_IQD:
1004                 return 1;
1005         default:
1006                 return 0;
1007         }
1008 }
1009
1010 static inline int
1011 qeth_get_mtu_outof_framesize(int framesize)
1012 {
1013         switch (framesize) {
1014         case 0x4000:
1015                 return 8192;
1016         case 0x6000:
1017                 return 16384;
1018         case 0xa000:
1019                 return 32768;
1020         case 0xffff:
1021                 return 57344;
1022         default:
1023                 return 0;
1024         }
1025 }
1026
1027 static inline int
1028 qeth_mtu_is_valid(struct qeth_card * card, int mtu)
1029 {
1030         switch (card->info.type) {
1031         case QETH_CARD_TYPE_OSAE:
1032                 return ((mtu >= 576) && (mtu <= 61440));
1033         case QETH_CARD_TYPE_IQD:
1034                 return ((mtu >= 576) &&
1035                         (mtu <= card->info.max_mtu + 4096 - 32));
1036         case QETH_CARD_TYPE_OSN:
1037         case QETH_CARD_TYPE_UNKNOWN:
1038         default:
1039                 return 1;
1040         }
1041 }
1042
1043 static inline int
1044 qeth_get_arphdr_type(int cardtype, int linktype)
1045 {
1046         switch (cardtype) {
1047         case QETH_CARD_TYPE_OSAE:
1048         case QETH_CARD_TYPE_OSN:
1049                 switch (linktype) {
1050                 case QETH_LINK_TYPE_LANE_TR:
1051                 case QETH_LINK_TYPE_HSTR:
1052                         return ARPHRD_IEEE802_TR;
1053                 default:
1054                         return ARPHRD_ETHER;
1055                 }
1056         case QETH_CARD_TYPE_IQD:
1057         default:
1058                 return ARPHRD_ETHER;
1059         }
1060 }
1061
1062 static inline int
1063 qeth_get_micros(void)
1064 {
1065         return (int) (get_clock() >> 12);
1066 }
1067
1068 static inline int
1069 qeth_get_qdio_q_format(struct qeth_card *card)
1070 {
1071         switch (card->info.type) {
1072         case QETH_CARD_TYPE_IQD:
1073                 return 2;
1074         default:
1075                 return 0;
1076         }
1077 }
1078
1079 static inline int
1080 qeth_isxdigit(char * buf)
1081 {
1082         while (*buf) {
1083                 if (!isxdigit(*buf++))
1084                         return 0;
1085         }
1086         return 1;
1087 }
1088
1089 static inline void
1090 qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
1091 {
1092         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
1093 }
1094
1095 static inline int
1096 qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
1097 {
1098         int count = 0, rc = 0;
1099         int in[4];
1100         char c;
1101
1102         rc = sscanf(buf, "%u.%u.%u.%u%c",
1103                     &in[0], &in[1], &in[2], &in[3], &c);
1104         if (rc != 4 && (rc != 5 || c != '\n'))
1105                 return -EINVAL;
1106         for (count = 0; count < 4; count++) {
1107                 if (in[count] > 255)
1108                         return -EINVAL;
1109                 addr[count] = in[count];
1110         }
1111         return 0;
1112 }
1113
1114 static inline void
1115 qeth_ipaddr6_to_string(const __u8 *addr, char *buf)
1116 {
1117         sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
1118                      ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
1119                      addr[0], addr[1], addr[2], addr[3],
1120                      addr[4], addr[5], addr[6], addr[7],
1121                      addr[8], addr[9], addr[10], addr[11],
1122                      addr[12], addr[13], addr[14], addr[15]);
1123 }
1124
1125 static inline int
1126 qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
1127 {
1128         const char *end, *end_tmp, *start;
1129         __u16 *in;
1130         char num[5];
1131         int num2, cnt, out, found, save_cnt;
1132         unsigned short in_tmp[8] = {0, };
1133
1134         cnt = out = found = save_cnt = num2 = 0;
1135         end = start = buf;
1136         in = (__u16 *) addr;
1137         memset(in, 0, 16);
1138         while (*end) {
1139                 end = strchr(start,':');
1140                 if (end == NULL) {
1141                         end = buf + strlen(buf);
1142                         if ((end_tmp = strchr(start, '\n')) != NULL)
1143                                 end = end_tmp;
1144                         out = 1;
1145                 }
1146                 if ((end - start)) {
1147                         memset(num, 0, 5);
1148                         if ((end - start) > 4)
1149                                 return -EINVAL;
1150                         memcpy(num, start, end - start);
1151                         if (!qeth_isxdigit(num))
1152                                 return -EINVAL;
1153                         sscanf(start, "%x", &num2);
1154                         if (found)
1155                                 in_tmp[save_cnt++] = num2;
1156                         else
1157                                 in[cnt++] = num2;
1158                         if (out)
1159                                 break;
1160                 } else {
1161                         if (found)
1162                                 return -EINVAL;
1163                         found = 1;
1164                 }
1165                 start = ++end;
1166         }
1167         if (cnt + save_cnt > 8)
1168                 return -EINVAL;
1169         cnt = 7;
1170         while (save_cnt)
1171                 in[cnt--] = in_tmp[--save_cnt];
1172         return 0;
1173 }
1174
1175 static inline void
1176 qeth_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
1177                       char *buf)
1178 {
1179         if (proto == QETH_PROT_IPV4)
1180                 qeth_ipaddr4_to_string(addr, buf);
1181         else if (proto == QETH_PROT_IPV6)
1182                 qeth_ipaddr6_to_string(addr, buf);
1183 }
1184
1185 static inline int
1186 qeth_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
1187                       __u8 *addr)
1188 {
1189         if (proto == QETH_PROT_IPV4)
1190                 return qeth_string_to_ipaddr4(buf, addr);
1191         else if (proto == QETH_PROT_IPV6)
1192                 return qeth_string_to_ipaddr6(buf, addr);
1193         else
1194                 return -EINVAL;
1195 }
1196
1197 extern int
1198 qeth_setrouting_v4(struct qeth_card *);
1199 extern int
1200 qeth_setrouting_v6(struct qeth_card *);
1201
1202 extern int
1203 qeth_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
1204
1205 extern void
1206 qeth_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions, u8 *, int);
1207
1208 extern int
1209 qeth_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1210
1211 extern void
1212 qeth_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1213
1214 extern int
1215 qeth_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1216
1217 extern void
1218 qeth_del_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1219
1220 extern int
1221 qeth_notifier_register(struct task_struct *, int );
1222
1223 extern int
1224 qeth_notifier_unregister(struct task_struct * );
1225
1226 extern void
1227 qeth_schedule_recovery(struct qeth_card *);
1228
1229 extern int
1230 qeth_realloc_buffer_pool(struct qeth_card *, int);
1231
1232 extern int
1233 qeth_set_large_send(struct qeth_card *, enum qeth_large_send_types);
1234
1235 extern void
1236 qeth_fill_header(struct qeth_card *, struct qeth_hdr *,
1237                  struct sk_buff *, int, int);
1238 extern void
1239 qeth_flush_buffers(struct qeth_qdio_out_q *, int, int, int);
1240
1241 extern int
1242 qeth_osn_assist(struct net_device *, void *, int);
1243
1244 extern int
1245 qeth_osn_register(unsigned char *read_dev_no,
1246                  struct net_device **,
1247                  int (*assist_cb)(struct net_device *, void *),
1248                  int (*data_cb)(struct sk_buff *));
1249
1250 extern void
1251 qeth_osn_deregister(struct net_device *);
1252
1253 #endif /* __QETH_H__ */