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
  12 #include <net/ipv6.h>
  13 #include <linux/in6.h>
  14 #include <net/if_inet6.h>
  15 #include <net/addrconf.h>
  16
  17
  18 #include <linux/bitops.h>
  19
  20 #include <asm/debug.h>
  21 #include <asm/qdio.h>
  22 #include <asm/ccwdev.h>
  23 #include <asm/ccwgroup.h>
  24
  25 #include "qeth_mpc.h"
  26
  27 #define VERSION_QETH_H          "$Revision: 1.135 $"
  28
  29 #ifdef CONFIG_QETH_IPV6
  30 #define QETH_VERSION_IPV6       ":IPv6"
  31 #else
  32 #define QETH_VERSION_IPV6       ""
  33 #endif
  34 #ifdef CONFIG_QETH_VLAN
  35 #define QETH_VERSION_VLAN       ":VLAN"
  36 #else
  37 #define QETH_VERSION_VLAN       ""
  38 #endif
  39
  40 /**
  41  * Debug Facility stuff
  42  */
  43 #define QETH_DBF_SETUP_NAME "qeth_setup"
  44 #define QETH_DBF_SETUP_LEN 8
  45 #define QETH_DBF_SETUP_INDEX 3
  46 #define QETH_DBF_SETUP_NR_AREAS 1
  47 #define QETH_DBF_SETUP_LEVEL 5
  48
  49 #define QETH_DBF_MISC_NAME "qeth_misc"
  50 #define QETH_DBF_MISC_LEN 128
  51 #define QETH_DBF_MISC_INDEX 1
  52 #define QETH_DBF_MISC_NR_AREAS 1
  53 #define QETH_DBF_MISC_LEVEL 2
  54
  55 #define QETH_DBF_DATA_NAME "qeth_data"
  56 #define QETH_DBF_DATA_LEN 96
  57 #define QETH_DBF_DATA_INDEX 3
  58 #define QETH_DBF_DATA_NR_AREAS 1
  59 #define QETH_DBF_DATA_LEVEL 2
  60
  61 #define QETH_DBF_CONTROL_NAME "qeth_control"
  62 #define QETH_DBF_CONTROL_LEN 256
  63 #define QETH_DBF_CONTROL_INDEX 3
  64 #define QETH_DBF_CONTROL_NR_AREAS 2
  65 #define QETH_DBF_CONTROL_LEVEL 5
  66
  67 #define QETH_DBF_TRACE_NAME "qeth_trace"
  68 #define QETH_DBF_TRACE_LEN 8
  69 #define QETH_DBF_TRACE_INDEX 2
  70 #define QETH_DBF_TRACE_NR_AREAS 2
  71 #define QETH_DBF_TRACE_LEVEL 3
  72 extern debug_info_t *qeth_dbf_trace;
  73
  74 #define QETH_DBF_SENSE_NAME "qeth_sense"
  75 #define QETH_DBF_SENSE_LEN 64
  76 #define QETH_DBF_SENSE_INDEX 1
  77 #define QETH_DBF_SENSE_NR_AREAS 1
  78 #define QETH_DBF_SENSE_LEVEL 2
  79
  80 #define QETH_DBF_QERR_NAME "qeth_qerr"
  81 #define QETH_DBF_QERR_LEN 8
  82 #define QETH_DBF_QERR_INDEX 1
  83 #define QETH_DBF_QERR_NR_AREAS 2
  84 #define QETH_DBF_QERR_LEVEL 2
  85
  86 #define QETH_DBF_TEXT(name,level,text) \
  87         do { \
  88                 debug_text_event(qeth_dbf_##name,level,text); \
  89         } while (0)
  90
  91 #define QETH_DBF_HEX(name,level,addr,len) \
  92         do { \
  93                 debug_event(qeth_dbf_##name,level,(void*)(addr),len); \
  94         } while (0)
  95
  96 DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);
  97
  98 #define QETH_DBF_TEXT_(name,level,text...)                              \
  99         do {                                                            \
 100                 char* dbf_txt_buf = get_cpu_var(qeth_dbf_txt_buf);      \
 101                 sprintf(dbf_txt_buf, text);                             \
 102                 debug_text_event(qeth_dbf_##name,level,dbf_txt_buf);    \
 103                 put_cpu_var(qeth_dbf_txt_buf);                          \
 104         } while (0)
 105
 106 #define QETH_DBF_SPRINTF(name,level,text...) \
 107         do { \
 108                 debug_sprintf_event(qeth_dbf_trace, level, ##text ); \
 109                 debug_sprintf_event(qeth_dbf_trace, level, text ); \
 110         } while (0)
 111
 112 /**
 113  * some more debug stuff
 114  */
 115 #define PRINTK_HEADER   "qeth: "
 116
 117 #define HEXDUMP16(importance,header,ptr) \
 118 PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 119                    "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
 120                    *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
 121                    *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
 122                    *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
 123                    *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
 124                    *(((char*)ptr)+12),*(((char*)ptr)+13), \
 125                    *(((char*)ptr)+14),*(((char*)ptr)+15)); \
 126 PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 127                    "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
 128                    *(((char*)ptr)+16),*(((char*)ptr)+17), \
 129                    *(((char*)ptr)+18),*(((char*)ptr)+19), \
 130                    *(((char*)ptr)+20),*(((char*)ptr)+21), \
 131                    *(((char*)ptr)+22),*(((char*)ptr)+23), \
 132                    *(((char*)ptr)+24),*(((char*)ptr)+25), \
 133                    *(((char*)ptr)+26),*(((char*)ptr)+27), \
 134                    *(((char*)ptr)+28),*(((char*)ptr)+29), \
 135                    *(((char*)ptr)+30),*(((char*)ptr)+31));
 136
 137 static inline void
 138 qeth_hex_dump(unsigned char *buf, size_t len)
 139 {
 140         size_t i;
 141
 142         for (i = 0; i < len; i++) {
 143                 if (i && !(i % 16))
 144                         printk("\n");
 145                 printk("%02x ", *(buf + i));
 146         }
 147         printk("\n");
 148 }
 149
 150 #define SENSE_COMMAND_REJECT_BYTE 0
 151 #define SENSE_COMMAND_REJECT_FLAG 0x80
 152 #define SENSE_RESETTING_EVENT_BYTE 1
 153 #define SENSE_RESETTING_EVENT_FLAG 0x80
 154
 155 #define atomic_swap(a,b) xchg((int *)a.counter, b)
 156
 157 /*
 158  * Common IO related definitions
 159  */
 160 extern struct device *qeth_root_dev;
 161 extern struct ccw_driver qeth_ccw_driver;
 162 extern struct ccwgroup_driver qeth_ccwgroup_driver;
 163
 164 #define CARD_RDEV(card) card->read.ccwdev
 165 #define CARD_WDEV(card) card->write.ccwdev
 166 #define CARD_DDEV(card) card->data.ccwdev
 167 #define CARD_BUS_ID(card) card->gdev->dev.bus_id
 168 #define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id
 169 #define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id
 170 #define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id
 171 #define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id
 172
 173 #define CARD_FROM_CDEV(cdev) (struct qeth_card *) \
 174                 ((struct ccwgroup_device *)cdev->dev.driver_data)\
 175                 ->dev.driver_data;
 176
 177 /**
 178  * card stuff
 179  */
 180 #ifdef CONFIG_QETH_PERF_STATS
 181 struct qeth_perf_stats {
 182         unsigned int bufs_rec;
 183         unsigned int bufs_sent;
 184
 185         unsigned int skbs_sent_pack;
 186         unsigned int bufs_sent_pack;
 187
 188         unsigned int sc_dp_p;
 189         unsigned int sc_p_dp;
 190         /* qdio_input_handler: number of times called, time spent in */
 191         __u64 inbound_start_time;
 192         unsigned int inbound_cnt;
 193         unsigned int inbound_time;
 194         /* qeth_send_packet: number of times called, time spent in */
 195         __u64 outbound_start_time;
 196         unsigned int outbound_cnt;
 197         unsigned int outbound_time;
 198         /* qdio_output_handler: number of times called, time spent in */
 199         __u64 outbound_handler_start_time;
 200         unsigned int outbound_handler_cnt;
 201         unsigned int outbound_handler_time;
 202         /* number of calls to and time spent in do_QDIO for inbound queue */
 203         __u64 inbound_do_qdio_start_time;
 204         unsigned int inbound_do_qdio_cnt;
 205         unsigned int inbound_do_qdio_time;
 206         /* number of calls to and time spent in do_QDIO for outbound queues */
 207         __u64 outbound_do_qdio_start_time;
 208         unsigned int outbound_do_qdio_cnt;
 209         unsigned int outbound_do_qdio_time;
 210         /* eddp data */
 211         unsigned int large_send_bytes;
 212         unsigned int large_send_cnt;
 213         unsigned int sg_skbs_sent;
 214         unsigned int sg_frags_sent;
 215 };
 216 #endif /* CONFIG_QETH_PERF_STATS */
 217
 218 /* Routing stuff */
 219 struct qeth_routing_info {
 220         enum qeth_routing_types type;
 221 };
 222
 223 /* IPA stuff */
 224 struct qeth_ipa_info {
 225         __u32 supported_funcs;
 226         __u32 enabled_funcs;
 227 };
 228
 229 static inline int
 230 qeth_is_ipa_supported(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
 231 {
 232         return (ipa->supported_funcs & func);
 233 }
 234
 235 static inline int
 236 qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
 237 {
 238         return (ipa->supported_funcs & ipa->enabled_funcs & func);
 239 }
 240
 241 #define qeth_adp_supported(c,f) \
 242         qeth_is_ipa_supported(&c->options.adp, f)
 243 #define qeth_adp_enabled(c,f) \
 244         qeth_is_ipa_enabled(&c->options.adp, f)
 245 #define qeth_is_supported(c,f) \
 246         qeth_is_ipa_supported(&c->options.ipa4, f)
 247 #define qeth_is_enabled(c,f) \
 248         qeth_is_ipa_enabled(&c->options.ipa4, f)
 249 #ifdef CONFIG_QETH_IPV6
 250 #define qeth_is_supported6(c,f) \
 251         qeth_is_ipa_supported(&c->options.ipa6, f)
 252 #define qeth_is_enabled6(c,f) \
 253         qeth_is_ipa_enabled(&c->options.ipa6, f)
 254 #else /* CONFIG_QETH_IPV6 */
 255 #define qeth_is_supported6(c,f) 0
 256 #define qeth_is_enabled6(c,f) 0
 257 #endif /* CONFIG_QETH_IPV6 */
 258 #define qeth_is_ipafunc_supported(c,prot,f) \
 259          (prot==QETH_PROT_IPV6)? qeth_is_supported6(c,f):qeth_is_supported(c,f)
 260 #define qeth_is_ipafunc_enabled(c,prot,f) \
 261          (prot==QETH_PROT_IPV6)? qeth_is_enabled6(c,f):qeth_is_enabled(c,f)
 262
 263
 264 #define QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT 0x0101
 265 #define QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT 0x0101
 266 #define QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT 0x4108
 267 #define QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT 0x5108
 268
 269 #define QETH_MODELLIST_ARRAY \
 270         {{0x1731,0x01,0x1732,0x01,QETH_CARD_TYPE_OSAE,1, \
 271         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
 272         QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
 273         QETH_MAX_QUEUES,0}, \
 274         {0x1731,0x05,0x1732,0x05,QETH_CARD_TYPE_IQD,0, \
 275         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
 276         QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
 277         QETH_MAX_QUEUES,0x103}, \
 278         {0,0,0,0,0,0,0,0,0}}
 279
 280 #define QETH_REAL_CARD          1
 281 #define QETH_VLAN_CARD          2
 282 #define QETH_BUFSIZE            4096
 283
 284 /**
 285  * some more defs
 286  */
 287 #define IF_NAME_LEN             16
 288 #define QETH_TX_TIMEOUT         100 * HZ
 289 #define QETH_HEADER_SIZE        32
 290 #define MAX_PORTNO              15
 291 #define QETH_FAKE_LL_LEN        ETH_HLEN
 292 #define QETH_FAKE_LL_V6_ADDR_POS 24
 293
 294 /*IPv6 address autoconfiguration stuff*/
 295 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 296 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 297
 298 /*****************************************************************************/
 299 /* QDIO queue and buffer handling                                            */
 300 /*****************************************************************************/
 301 #define QETH_MAX_QUEUES 4
 302 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 303 #define QETH_IN_BUF_COUNT_DEFAULT 16
 304 #define QETH_IN_BUF_COUNT_MIN 8
 305 #define QETH_IN_BUF_COUNT_MAX 128
 306 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 307 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 308                 ((card)->qdio.in_buf_pool.buf_count / 2)
 309
 310 /* buffers we have to be behind before we get a PCI */
 311 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 312 /*enqueued free buffers left before we get a PCI*/
 313 #define QETH_PCI_THRESHOLD_B(card) 0
 314 /*not used unless the microcode gets patched*/
 315 #define QETH_PCI_TIMER_VALUE(card) 3
 316
 317 #define QETH_MIN_INPUT_THRESHOLD 1
 318 #define QETH_MAX_INPUT_THRESHOLD 500
 319 #define QETH_MIN_OUTPUT_THRESHOLD 1
 320 #define QETH_MAX_OUTPUT_THRESHOLD 300
 321
 322 /* priority queing */
 323 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 324 #define QETH_DEFAULT_QUEUE    2
 325 #define QETH_NO_PRIO_QUEUEING 0
 326 #define QETH_PRIO_Q_ING_PREC  1
 327 #define QETH_PRIO_Q_ING_TOS   2
 328 #define IP_TOS_LOWDELAY 0x10
 329 #define IP_TOS_HIGHTHROUGHPUT 0x08
 330 #define IP_TOS_HIGHRELIABILITY 0x04
 331 #define IP_TOS_NOTIMPORTANT 0x02
 332
 333 /* Packing */
 334 #define QETH_LOW_WATERMARK_PACK  2
 335 #define QETH_HIGH_WATERMARK_PACK 5
 336 #define QETH_WATERMARK_PACK_FUZZ 1
 337
 338 #define QETH_IP_HEADER_SIZE 40
 339
 340 struct qeth_hdr_layer3 {
 341         __u8  id;
 342         __u8  flags;
 343         __u16 inbound_checksum; /*TSO:__u16 seqno */
 344         __u32 token;            /*TSO: __u32 reserved */
 345         __u16 length;
 346         __u8  vlan_prio;
 347         __u8  ext_flags;
 348         __u16 vlan_id;
 349         __u16 frame_offset;
 350         __u8  dest_addr[16];
 351 } __attribute__ ((packed));
 352
 353 struct qeth_hdr_layer2 {
 354         __u8 id;
 355         __u8 flags[3];
 356         __u8 port_no;
 357         __u8 hdr_length;
 358         __u16 pkt_length;
 359         __u16 seq_no;
 360         __u16 vlan_id;
 361         __u32 reserved;
 362         __u8 reserved2[16];
 363 } __attribute__ ((packed));
 364
 365 struct qeth_hdr {
 366         union {
 367                 struct qeth_hdr_layer2 l2;
 368                 struct qeth_hdr_layer3 l3;
 369         } hdr;
 370 } __attribute__ ((packed));
 371
 372
 373 /* flags for qeth_hdr.flags */
 374 #define QETH_HDR_PASSTHRU 0x10
 375 #define QETH_HDR_IPV6     0x80
 376 #define QETH_HDR_CAST_MASK 0x07
 377 enum qeth_cast_flags {
 378         QETH_CAST_UNICAST   = 0x06,
 379         QETH_CAST_MULTICAST = 0x04,
 380         QETH_CAST_BROADCAST = 0x05,
 381         QETH_CAST_ANYCAST   = 0x07,
 382         QETH_CAST_NOCAST    = 0x00,
 383 };
 384
 385 enum qeth_layer2_frame_flags {
 386         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 387         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 388         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 389         QETH_LAYER2_FLAG_VLAN      = 0x10,
 390 };
 391
 392 enum qeth_header_ids {
 393         QETH_HEADER_TYPE_LAYER3 = 0x01,
 394         QETH_HEADER_TYPE_LAYER2 = 0x02,
 395         QETH_HEADER_TYPE_TSO    = 0x03,
 396 };
 397 /* flags for qeth_hdr.ext_flags */
 398 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 399 #define QETH_HDR_EXT_TOKEN_ID         0x02
 400 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 401 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 402 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 403 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 404 #define QETH_HDR_EXT_UDP_TSO          0x40 /*bit off for TCP*/
 405
 406 static inline int
 407 qeth_is_last_sbale(struct qdio_buffer_element *sbale)
 408 {
 409         return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
 410 }
 411
 412 enum qeth_qdio_buffer_states {
 413         /*
 414          * inbound: read out by driver; owned by hardware in order to be filled
 415          * outbound: owned by driver in order to be filled
 416          */
 417         QETH_QDIO_BUF_EMPTY,
 418         /*
 419          * inbound: filled by hardware; owned by driver in order to be read out
 420          * outbound: filled by driver; owned by hardware in order to be sent
 421          */
 422         QETH_QDIO_BUF_PRIMED,
 423 };
 424
 425 enum qeth_qdio_info_states {
 426         QETH_QDIO_UNINITIALIZED,
 427         QETH_QDIO_ALLOCATED,
 428         QETH_QDIO_ESTABLISHED,
 429 };
 430
 431 struct qeth_buffer_pool_entry {
 432         struct list_head list;
 433         struct list_head init_list;
 434         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 435 };
 436
 437 struct qeth_qdio_buffer_pool {
 438         struct list_head entry_list;
 439         int buf_count;
 440 };
 441
 442 struct qeth_qdio_buffer {
 443         struct qdio_buffer *buffer;
 444         volatile enum qeth_qdio_buffer_states state;
 445         /* the buffer pool entry currently associated to this buffer */
 446         struct qeth_buffer_pool_entry *pool_entry;
 447 };
 448
 449 struct qeth_qdio_q {
 450         struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 451         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 452         /*
 453          * buf_to_init means "buffer must be initialized by driver and must
 454          * be made available for hardware" -> state is set to EMPTY
 455          */
 456         volatile int next_buf_to_init;
 457 } __attribute__ ((aligned(256)));
 458
 459 /* possible types of qeth large_send support */
 460 enum qeth_large_send_types {
 461         QETH_LARGE_SEND_NO,
 462         QETH_LARGE_SEND_EDDP,
 463         QETH_LARGE_SEND_TSO,
 464 };
 465
 466 struct qeth_qdio_out_buffer {
 467         struct qdio_buffer *buffer;
 468         atomic_t state;
 469         volatile int next_element_to_fill;
 470         struct sk_buff_head skb_list;
 471         struct list_head ctx_list;
 472 };
 473
 474 struct qeth_card;
 475
 476 enum qeth_out_q_states {
 477        QETH_OUT_Q_UNLOCKED,
 478        QETH_OUT_Q_LOCKED,
 479        QETH_OUT_Q_LOCKED_FLUSH,
 480 };
 481
 482 struct qeth_qdio_out_q {
 483         struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 484         struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 485         int queue_no;
 486         struct qeth_card *card;
 487         atomic_t state;
 488         volatile int do_pack;
 489         /*
 490          * index of buffer to be filled by driver; state EMPTY or PACKING
 491          */
 492         volatile int next_buf_to_fill;
 493         /*
 494          * number of buffers that are currently filled (PRIMED)
 495          * -> these buffers are hardware-owned
 496          */
 497         atomic_t used_buffers;
 498         /* indicates whether PCI flag must be set (or if one is outstanding) */
 499         atomic_t set_pci_flags_count;
 500 } __attribute__ ((aligned(256)));
 501
 502 struct qeth_qdio_info {
 503         volatile enum qeth_qdio_info_states state;
 504         /* input */
 505         struct qeth_qdio_q *in_q;
 506         struct qeth_qdio_buffer_pool in_buf_pool;
 507         struct qeth_qdio_buffer_pool init_pool;
 508         int in_buf_size;
 509
 510         /* output */
 511         int no_out_queues;
 512         struct qeth_qdio_out_q **out_qs;
 513
 514         /* priority queueing */
 515         int do_prio_queueing;
 516         int default_out_queue;
 517 };
 518
 519 enum qeth_send_errors {
 520         QETH_SEND_ERROR_NONE,
 521         QETH_SEND_ERROR_LINK_FAILURE,
 522         QETH_SEND_ERROR_RETRY,
 523         QETH_SEND_ERROR_KICK_IT,
 524 };
 525
 526 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
 527 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
 528 /* tr mc mac is longer, but that will be enough to detect mc frames */
 529 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
 530 #define QETH_TR_MAC_C        0x0300 /* canonical */
 531
 532 #define DEFAULT_ADD_HHLEN 0
 533 #define MAX_ADD_HHLEN 1024
 534
 535 /**
 536  * buffer stuff for read channel
 537  */
 538 #define QETH_CMD_BUFFER_NO      8
 539
 540 /**
 541  *  channel state machine
 542  */
 543 enum qeth_channel_states {
 544         CH_STATE_UP,
 545         CH_STATE_DOWN,
 546         CH_STATE_ACTIVATING,
 547         CH_STATE_HALTED,
 548         CH_STATE_STOPPED,
 549 };
 550 /**
 551  * card state machine
 552  */
 553 enum qeth_card_states {
 554         CARD_STATE_DOWN,
 555         CARD_STATE_HARDSETUP,
 556         CARD_STATE_SOFTSETUP,
 557         CARD_STATE_UP,
 558         CARD_STATE_RECOVER,
 559 };
 560
 561 /**
 562  * Protocol versions
 563  */
 564 enum qeth_prot_versions {
 565         QETH_PROT_SNA  = 0x0001,
 566         QETH_PROT_IPV4 = 0x0004,
 567         QETH_PROT_IPV6 = 0x0006,
 568 };
 569
 570 enum qeth_ip_types {
 571         QETH_IP_TYPE_NORMAL,
 572         QETH_IP_TYPE_VIPA,
 573         QETH_IP_TYPE_RXIP,
 574         QETH_IP_TYPE_DEL_ALL_MC,
 575 };
 576
 577 enum qeth_cmd_buffer_state {
 578         BUF_STATE_FREE,
 579         BUF_STATE_LOCKED,
 580         BUF_STATE_PROCESSED,
 581 };
 582 /**
 583  * IP address and multicast list
 584  */
 585 struct qeth_ipaddr {
 586         struct list_head entry;
 587         enum qeth_ip_types type;
 588         enum qeth_ipa_setdelip_flags set_flags;
 589         enum qeth_ipa_setdelip_flags del_flags;
 590         int is_multicast;
 591         volatile int users;
 592         enum qeth_prot_versions proto;
 593         unsigned char mac[OSA_ADDR_LEN];
 594         union {
 595                 struct {
 596                         unsigned int addr;
 597                         unsigned int mask;
 598                 } a4;
 599                 struct {
 600                         struct in6_addr addr;
 601                         unsigned int pfxlen;
 602                 } a6;
 603         } u;
 604 };
 605
 606 struct qeth_ipato_entry {
 607         struct list_head entry;
 608         enum qeth_prot_versions proto;
 609         char addr[16];
 610         int mask_bits;
 611 };
 612
 613 struct qeth_ipato {
 614         int enabled;
 615         int invert4;
 616         int invert6;
 617         struct list_head entries;
 618 };
 619
 620 struct qeth_channel;
 621
 622 struct qeth_cmd_buffer {
 623         enum qeth_cmd_buffer_state state;
 624         struct qeth_channel *channel;
 625         unsigned char *data;
 626         int rc;
 627         void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
 628 };
 629
 630
 631 /**
 632  * definition of a qeth channel, used for read and write
 633  */
 634 struct qeth_channel {
 635         enum qeth_channel_states state;
 636         struct ccw1 ccw;
 637         spinlock_t iob_lock;
 638         wait_queue_head_t wait_q;
 639         struct tasklet_struct irq_tasklet;
 640         struct ccw_device *ccwdev;
 641 /*command buffer for control data*/
 642         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 643         atomic_t irq_pending;
 644         volatile int io_buf_no;
 645         volatile int buf_no;
 646 };
 647
 648 /**
 649  *  OSA card related definitions
 650  */
 651 struct qeth_token {
 652         __u32 issuer_rm_w;
 653         __u32 issuer_rm_r;
 654         __u32 cm_filter_w;
 655         __u32 cm_filter_r;
 656         __u32 cm_connection_w;
 657         __u32 cm_connection_r;
 658         __u32 ulp_filter_w;
 659         __u32 ulp_filter_r;
 660         __u32 ulp_connection_w;
 661         __u32 ulp_connection_r;
 662 };
 663
 664 struct qeth_seqno {
 665         __u32 trans_hdr;
 666         __u32 pdu_hdr;
 667         __u32 pdu_hdr_ack;
 668         __u16 ipa;
 669 };
 670
 671 struct qeth_reply {
 672         struct list_head list;
 673         wait_queue_head_t wait_q;
 674         int (*callback)(struct qeth_card *,struct qeth_reply *,unsigned long);
 675         u32 seqno;
 676         unsigned long offset;
 677         int received;
 678         int rc;
 679         void *param;
 680         struct qeth_card *card;
 681         atomic_t refcnt;
 682 };
 683
 684 #define QETH_BROADCAST_WITH_ECHO    1
 685 #define QETH_BROADCAST_WITHOUT_ECHO 2
 686
 687 struct qeth_card_blkt {
 688         int time_total;
 689         int inter_packet;
 690         int inter_packet_jumbo;
 691 };
 692
 693
 694
 695 struct qeth_card_info {
 696         unsigned short unit_addr2;
 697         unsigned short cula;
 698         unsigned short chpid;
 699         __u16 func_level;
 700         char mcl_level[QETH_MCL_LENGTH + 1];
 701         int guestlan;
 702         int layer2_mac_registered;
 703         int portname_required;
 704         int portno;
 705         char portname[9];
 706         enum qeth_card_types type;
 707         enum qeth_link_types link_type;
 708         int is_multicast_different;
 709         int initial_mtu;
 710         int max_mtu;
 711         int broadcast_capable;
 712         int unique_id;
 713         struct qeth_card_blkt blkt;
 714         __u32 csum_mask;
 715 };
 716
 717 struct qeth_card_options {
 718         struct qeth_routing_info route4;
 719         struct qeth_ipa_info ipa4;
 720         struct qeth_ipa_info adp; /*Adapter parameters*/
 721 #ifdef CONFIG_QETH_IPV6
 722         struct qeth_routing_info route6;
 723         struct qeth_ipa_info ipa6;
 724 #endif /* QETH_IPV6 */
 725         enum qeth_checksum_types checksum_type;
 726         int broadcast_mode;
 727         int macaddr_mode;
 728         int fake_broadcast;
 729         int add_hhlen;
 730         int fake_ll;
 731         int layer2;
 732         enum qeth_large_send_types large_send;
 733 };
 734
 735 /*
 736  * thread bits for qeth_card thread masks
 737  */
 738 enum qeth_threads {
 739         QETH_SET_IP_THREAD  = 1,
 740         QETH_RECOVER_THREAD = 2,
 741 };
 742
 743 struct qeth_card {
 744         struct list_head list;
 745         enum qeth_card_states state;
 746         int lan_online;
 747         spinlock_t lock;
 748 /*hardware and sysfs stuff*/
 749         struct ccwgroup_device *gdev;
 750         struct qeth_channel read;
 751         struct qeth_channel write;
 752         struct qeth_channel data;
 753
 754         struct net_device *dev;
 755         struct net_device_stats stats;
 756
 757         struct qeth_card_info info;
 758         struct qeth_token token;
 759         struct qeth_seqno seqno;
 760         struct qeth_card_options options;
 761
 762         wait_queue_head_t wait_q;
 763 #ifdef CONFIG_QETH_VLAN
 764         spinlock_t vlanlock;
 765         struct vlan_group *vlangrp;
 766 #endif
 767         struct work_struct kernel_thread_starter;
 768         spinlock_t thread_mask_lock;
 769         volatile unsigned long thread_start_mask;
 770         volatile unsigned long thread_allowed_mask;
 771         volatile unsigned long thread_running_mask;
 772         spinlock_t ip_lock;
 773         struct list_head ip_list;
 774         struct list_head *ip_tbd_list;
 775         struct qeth_ipato ipato;
 776         struct list_head cmd_waiter_list;
 777         /* QDIO buffer handling */
 778         struct qeth_qdio_info qdio;
 779 #ifdef CONFIG_QETH_PERF_STATS
 780         struct qeth_perf_stats perf_stats;
 781 #endif /* CONFIG_QETH_PERF_STATS */
 782         int use_hard_stop;
 783         int (*orig_hard_header)(struct sk_buff *,struct net_device *,
 784                                 unsigned short,void *,void *,unsigned);
 785 };
 786
 787 struct qeth_card_list_struct {
 788         struct list_head list;
 789         rwlock_t rwlock;
 790 };
 791
 792 extern struct qeth_card_list_struct qeth_card_list;
 793
 794 /*notifier list */
 795 struct qeth_notify_list_struct {
 796         struct list_head list;
 797         struct task_struct *task;
 798         int signum;
 799 };
 800 extern spinlock_t qeth_notify_lock;
 801 extern struct list_head qeth_notify_list;
 802
 803 /*some helper functions*/
 804
 805 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 806
 807 inline static __u8
 808 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
 809 {
 810         switch (link_type) {
 811         case QETH_LINK_TYPE_HSTR:
 812                 return 2;
 813         default:
 814                 return 1;
 815         }
 816 }
 817
 818 inline static int
 819 qeth_realloc_headroom(struct qeth_card *card, struct sk_buff **skb, int size)
 820 {
 821         struct sk_buff *new_skb = NULL;
 822
 823         if (skb_headroom(*skb) < size){
 824                 new_skb = skb_realloc_headroom(*skb, size);
 825                 if (!new_skb) {
 826                         PRINT_ERR("qeth_prepare_skb: could "
 827                                   "not realloc headroom for qeth_hdr "
 828                                   "on interface %s", QETH_CARD_IFNAME(card));
 829                         return -ENOMEM;
 830                 }
 831                 *skb = new_skb;
 832         }
 833         return 0;
 834 }
 835 static inline struct sk_buff *
 836 qeth_pskb_unshare(struct sk_buff *skb, int pri)
 837 {
 838         struct sk_buff *nskb;
 839         if (!skb_cloned(skb))
 840                 return skb;
 841         nskb = skb_copy(skb, pri);
 842         kfree_skb(skb); /* free our shared copy */
 843         return nskb;
 844 }
 845
 846
 847 inline static void *
 848 qeth_push_skb(struct qeth_card *card, struct sk_buff **skb, int size)
 849 {
 850         void *hdr;
 851
 852         hdr = (void *) skb_push(*skb, size);
 853         /*
 854          * sanity check, the Linux memory allocation scheme should
 855          * never present us cases like this one (the qdio header size plus
 856          * the first 40 bytes of the paket cross a 4k boundary)
 857          */
 858         if ((((unsigned long) hdr) & (~(PAGE_SIZE - 1))) !=
 859             (((unsigned long) hdr + size +
 860               QETH_IP_HEADER_SIZE) & (~(PAGE_SIZE - 1)))) {
 861                 PRINT_ERR("qeth_prepare_skb: misaligned "
 862                           "packet on interface %s. Discarded.",
 863                           QETH_CARD_IFNAME(card));
 864                 return NULL;
 865         }
 866         return hdr;
 867 }
 868
 869 inline static int
 870 qeth_get_hlen(__u8 link_type)
 871 {
 872 #ifdef CONFIG_QETH_IPV6
 873         switch (link_type) {
 874         case QETH_LINK_TYPE_HSTR:
 875         case QETH_LINK_TYPE_LANE_TR:
 876                 return sizeof(struct qeth_hdr) + TR_HLEN;
 877         default:
 878 #ifdef CONFIG_QETH_VLAN
 879                 return sizeof(struct qeth_hdr) + VLAN_ETH_HLEN;
 880 #else
 881                 return sizeof(struct qeth_hdr) + ETH_HLEN;
 882 #endif
 883         }
 884 #else  /* CONFIG_QETH_IPV6 */
 885 #ifdef CONFIG_QETH_VLAN
 886         return sizeof(struct qeth_hdr) + VLAN_HLEN;
 887 #else
 888         return sizeof(struct qeth_hdr);
 889 #endif
 890 #endif /* CONFIG_QETH_IPV6 */
 891 }
 892
 893 inline static unsigned short
 894 qeth_get_netdev_flags(struct qeth_card *card)
 895 {
 896         if (card->options.layer2)
 897                 return 0;
 898         switch (card->info.type) {
 899         case QETH_CARD_TYPE_IQD:
 900                 return IFF_NOARP;
 901 #ifdef CONFIG_QETH_IPV6
 902         default:
 903                 return 0;
 904 #else
 905         default:
 906                 return IFF_NOARP;
 907 #endif
 908         }
 909 }
 910
 911 inline static int
 912 qeth_get_initial_mtu_for_card(struct qeth_card * card)
 913 {
 914         switch (card->info.type) {
 915         case QETH_CARD_TYPE_UNKNOWN:
 916                 return 1500;
 917         case QETH_CARD_TYPE_IQD:
 918                 return card->info.max_mtu;
 919         case QETH_CARD_TYPE_OSAE:
 920                 switch (card->info.link_type) {
 921                 case QETH_LINK_TYPE_HSTR:
 922                 case QETH_LINK_TYPE_LANE_TR:
 923                         return 2000;
 924                 default:
 925                         return 1492;
 926                 }
 927         default:
 928                 return 1500;
 929         }
 930 }
 931
 932 inline static int
 933 qeth_get_max_mtu_for_card(int cardtype)
 934 {
 935         switch (cardtype) {
 936         case QETH_CARD_TYPE_UNKNOWN:
 937                 return 61440;
 938         case QETH_CARD_TYPE_OSAE:
 939                 return 61440;
 940         case QETH_CARD_TYPE_IQD:
 941                 return 57344;
 942         default:
 943                 return 1500;
 944         }
 945 }
 946
 947 inline static int
 948 qeth_get_mtu_out_of_mpc(int cardtype)
 949 {
 950         switch (cardtype) {
 951         case QETH_CARD_TYPE_IQD:
 952                 return 1;
 953         default:
 954                 return 0;
 955         }
 956 }
 957
 958 inline static int
 959 qeth_get_mtu_outof_framesize(int framesize)
 960 {
 961         switch (framesize) {
 962         case 0x4000:
 963                 return 8192;
 964         case 0x6000:
 965                 return 16384;
 966         case 0xa000:
 967                 return 32768;
 968         case 0xffff:
 969                 return 57344;
 970         default:
 971                 return 0;
 972         }
 973 }
 974
 975 inline static int
 976 qeth_mtu_is_valid(struct qeth_card * card, int mtu)
 977 {
 978         switch (card->info.type) {
 979         case QETH_CARD_TYPE_OSAE:
 980                 return ((mtu >= 576) && (mtu <= 61440));
 981         case QETH_CARD_TYPE_IQD:
 982                 return ((mtu >= 576) &&
 983                         (mtu <= card->info.max_mtu + 4096 - 32));
 984         case QETH_CARD_TYPE_UNKNOWN:
 985         default:
 986                 return 1;
 987         }
 988 }
 989
 990 inline static int
 991 qeth_get_arphdr_type(int cardtype, int linktype)
 992 {
 993         switch (cardtype) {
 994         case QETH_CARD_TYPE_OSAE:
 995                 switch (linktype) {
 996                 case QETH_LINK_TYPE_LANE_TR:
 997                 case QETH_LINK_TYPE_HSTR:
 998                         return ARPHRD_IEEE802_TR;
 999                 default:
1000                         return ARPHRD_ETHER;
1001                 }
1002         case QETH_CARD_TYPE_IQD:
1003         default:
1004                 return ARPHRD_ETHER;
1005         }
1006 }
1007
1008 #ifdef CONFIG_QETH_PERF_STATS
1009 inline static int
1010 qeth_get_micros(void)
1011 {
1012         return (int) (get_clock() >> 12);
1013 }
1014 #endif
1015
1016 static inline int
1017 qeth_get_qdio_q_format(struct qeth_card *card)
1018 {
1019         switch (card->info.type) {
1020         case QETH_CARD_TYPE_IQD:
1021                 return 2;
1022         default:
1023                 return 0;
1024         }
1025 }
1026
1027 static inline void
1028 qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
1029 {
1030         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
1031 }
1032
1033 static inline int
1034 qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
1035 {
1036         const char *start, *end;
1037         char abuf[4];
1038         char *tmp;
1039         int len;
1040         int i;
1041
1042         start = buf;
1043         for (i = 0; i < 3; i++) {
1044                 if (!(end = strchr(start, '.')))
1045                         return -EINVAL;
1046                 len = end - start;
1047                 memset(abuf, 0, 4);
1048                 strncpy(abuf, start, len);
1049                 addr[i] = simple_strtoul(abuf, &tmp, 10);
1050                 start = end + 1;
1051         }
1052         memset(abuf, 0, 4);
1053         strcpy(abuf, start);
1054         addr[3] = simple_strtoul(abuf, &tmp, 10);
1055         return 0;
1056 }
1057
1058 static inline void
1059 qeth_ipaddr6_to_string(const __u8 *addr, char *buf)
1060 {
1061         sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
1062                      ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
1063                      addr[0], addr[1], addr[2], addr[3],
1064                      addr[4], addr[5], addr[6], addr[7],
1065                      addr[8], addr[9], addr[10], addr[11],
1066                      addr[12], addr[13], addr[14], addr[15]);
1067 }
1068
1069 static inline int
1070 qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
1071 {
1072         const char *start, *end;
1073         u16 *tmp_addr;
1074         char abuf[5];
1075         char *tmp;
1076         int len;
1077         int i;
1078
1079         tmp_addr = (u16 *)addr;
1080         start = buf;
1081         for (i = 0; i < 7; i++) {
1082                 if (!(end = strchr(start, ':')))
1083                         return -EINVAL;
1084                 len = end - start;
1085                 memset(abuf, 0, 5);
1086                 strncpy(abuf, start, len);
1087                 tmp_addr[i] = simple_strtoul(abuf, &tmp, 16);
1088                 start = end + 1;
1089         }
1090         memset(abuf, 0, 5);
1091         strcpy(abuf, start);
1092         tmp_addr[7] = simple_strtoul(abuf, &tmp, 16);
1093         return 0;
1094 }
1095
1096 static inline void
1097 qeth_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
1098                       char *buf)
1099 {
1100         if (proto == QETH_PROT_IPV4)
1101                 return qeth_ipaddr4_to_string(addr, buf);
1102         else if (proto == QETH_PROT_IPV6)
1103                 return qeth_ipaddr6_to_string(addr, buf);
1104 }
1105
1106 static inline int
1107 qeth_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
1108                       __u8 *addr)
1109 {
1110         if (proto == QETH_PROT_IPV4)
1111                 return qeth_string_to_ipaddr4(buf, addr);
1112         else if (proto == QETH_PROT_IPV6)
1113                 return qeth_string_to_ipaddr6(buf, addr);
1114         else
1115                 return -EINVAL;
1116 }
1117
1118 extern int
1119 qeth_setrouting_v4(struct qeth_card *);
1120 extern int
1121 qeth_setrouting_v6(struct qeth_card *);
1122
1123 extern int
1124 qeth_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
1125
1126 extern void
1127 qeth_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions, u8 *, int);
1128
1129 extern int
1130 qeth_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1131
1132 extern void
1133 qeth_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1134
1135 extern int
1136 qeth_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1137
1138 extern void
1139 qeth_del_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1140
1141 extern int
1142 qeth_notifier_register(struct task_struct *, int );
1143
1144 extern int
1145 qeth_notifier_unregister(struct task_struct * );
1146
1147 extern void
1148 qeth_schedule_recovery(struct qeth_card *);
1149
1150 extern int
1151 qeth_realloc_buffer_pool(struct qeth_card *, int);
1152
1153 extern int
1154 qeth_set_large_send(struct qeth_card *);
1155
1156 extern void
1157 qeth_fill_header(struct qeth_card *, struct qeth_hdr *,
1158                  struct sk_buff *, int, int);
1159 extern void
1160 qeth_flush_buffers(struct qeth_qdio_out_q *, int, int, int);
1161
1162 #endif /* __QETH_H__ */