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