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