include/linux/wimax/i2400m.h

   1 /*
   2  * Intel Wireless WiMax Connection 2400m
   3  * Host-Device protocol interface definitions
   4  *
   5  *
   6  * Copyright (C) 2007-2008 Intel Corporation. All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  *   * Redistributions of source code must retain the above copyright
  13  *     notice, this list of conditions and the following disclaimer.
  14  *   * Redistributions in binary form must reproduce the above copyright
  15  *     notice, this list of conditions and the following disclaimer in
  16  *     the documentation and/or other materials provided with the
  17  *     distribution.
  18  *   * Neither the name of Intel Corporation nor the names of its
  19  *     contributors may be used to endorse or promote products derived
  20  *     from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  *
  35  * Intel Corporation <linux-wimax@intel.com>
  36  * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
  37  *  - Initial implementation
  38  *
  39  *
  40  * This header defines the data structures and constants used to
  41  * communicate with the device.
  42  *
  43  * BOOTMODE/BOOTROM/FIRMWARE UPLOAD PROTOCOL
  44  *
  45  * The firmware upload protocol is quite simple and only requires a
  46  * handful of commands. See drivers/net/wimax/i2400m/fw.c for more
  47  * details.
  48  *
  49  * The BCF data structure is for the firmware file header.
  50  *
  51  *
  52  * THE DATA / CONTROL PROTOCOL
  53  *
  54  * This is the normal protocol spoken with the device once the
  55  * firmware is uploaded. It transports data payloads and control
  56  * messages back and forth.
  57  *
  58  * It consists 'messages' that pack one or more payloads each. The
  59  * format is described in detail in drivers/net/wimax/i2400m/rx.c and
  60  * tx.c.
  61  *
  62  *
  63  * THE L3L4 PROTOCOL
  64  *
  65  * The term L3L4 refers to Layer 3 (the device), Layer 4 (the
  66  * driver/host software).
  67  *
  68  * This is the control protocol used by the host to control the i2400m
  69  * device (scan, connect, disconnect...). This is sent to / received
  70  * as control frames. These frames consist of a header and zero or
  71  * more TLVs with information. We call each control frame a "message".
  72  *
  73  * Each message is composed of:
  74  *
  75  * HEADER
  76  * [TLV0 + PAYLOAD0]
  77  * [TLV1 + PAYLOAD1]
  78  * [...]
  79  * [TLVN + PAYLOADN]
  80  *
  81  * The HEADER is defined by 'struct i2400m_l3l4_hdr'. The payloads are
  82  * defined by a TLV structure (Type Length Value) which is a 'header'
  83  * (struct i2400m_tlv_hdr) and then the payload.
  84  *
  85  * All integers are represented as Little Endian.
  86  *
  87  * - REQUESTS AND EVENTS
  88  *
  89  * The requests can be clasified as follows:
  90  *
  91  *   COMMAND:  implies a request from the host to the device requesting
  92  *             an action being performed. The device will reply with a
  93  *             message (with the same type as the command), status and
  94  *             no (TLV) payload. Execution of a command might cause
  95  *             events (of different type) to be sent later on as
  96  *             device's state changes.
  97  *
  98  *   GET/SET:  similar to COMMAND, but will not cause other
  99  *             EVENTs. The reply, in the case of GET, will contain
 100  *             TLVs with the requested information.
 101  *
 102  *   EVENT:    asynchronous messages sent from the device, maybe as a
 103  *             consequence of previous COMMANDs but disassociated from
 104  *             them.
 105  *
 106  * Only one request might be pending at the same time (ie: don't
 107  * parallelize nor post another GET request before the previous
 108  * COMMAND has been acknowledged with it's corresponding reply by the
 109  * device).
 110  *
 111  * The different requests and their formats are described below:
 112  *
 113  *  I2400M_MT_*   Message types
 114  *  I2400M_MS_*   Message status (for replies, events)
 115  *  i2400m_tlv_*  TLVs
 116  *
 117  * data types are named 'struct i2400m_msg_OPNAME', OPNAME matching the
 118  * operation.
 119  */
 120
 121 #ifndef __LINUX__WIMAX__I2400M_H__
 122 #define __LINUX__WIMAX__I2400M_H__
 123
 124 #include <linux/types.h>
 125
 126
 127 /*
 128  * Host Device Interface (HDI) common to all busses
 129  */
 130
 131 /* Boot-mode (firmware upload mode) commands */
 132
 133 /* Header for the firmware file */
 134 struct i2400m_bcf_hdr {
 135         __le32 module_type;
 136         __le32 header_len;
 137         __le32 header_version;
 138         __le32 module_id;
 139         __le32 module_vendor;
 140         __le32 date;            /* BCD YYYMMDD */
 141         __le32 size;
 142         __le32 key_size;        /* in dwords */
 143         __le32 modulus_size;    /* in dwords */
 144         __le32 exponent_size;   /* in dwords */
 145         __u8 reserved[88];
 146 } __attribute__ ((packed));
 147
 148 /* Boot mode opcodes */
 149 enum i2400m_brh_opcode {
 150         I2400M_BRH_READ = 1,
 151         I2400M_BRH_WRITE = 2,
 152         I2400M_BRH_JUMP = 3,
 153         I2400M_BRH_SIGNED_JUMP = 8,
 154         I2400M_BRH_HASH_PAYLOAD_ONLY = 9,
 155 };
 156
 157 /* Boot mode command masks and stuff */
 158 enum i2400m_brh {
 159         I2400M_BRH_SIGNATURE = 0xcbbc0000,
 160         I2400M_BRH_SIGNATURE_MASK = 0xffff0000,
 161         I2400M_BRH_SIGNATURE_SHIFT = 16,
 162         I2400M_BRH_OPCODE_MASK = 0x0000000f,
 163         I2400M_BRH_RESPONSE_MASK = 0x000000f0,
 164         I2400M_BRH_RESPONSE_SHIFT = 4,
 165         I2400M_BRH_DIRECT_ACCESS = 0x00000400,
 166         I2400M_BRH_RESPONSE_REQUIRED = 0x00000200,
 167         I2400M_BRH_USE_CHECKSUM = 0x00000100,
 168 };
 169
 170
 171 /* Constants for bcf->module_id */
 172 enum i2400m_bcf_mod_id {
 173         /* Firmware file carries its own pokes -- pokes are a set of
 174          * magical values that have to be written in certain memory
 175          * addresses to get the device up and ready for firmware
 176          * download when it is in non-signed boot mode. */
 177         I2400M_BCF_MOD_ID_POKES = 0x000000001,
 178 };
 179
 180
 181 /**
 182  * i2400m_bootrom_header - Header for a boot-mode command
 183  *
 184  * @cmd: the above command descriptor
 185  * @target_addr: where on the device memory should the action be performed.
 186  * @data_size: for read/write, amount of data to be read/written
 187  * @block_checksum: checksum value (if applicable)
 188  * @payload: the beginning of data attached to this header
 189  */
 190 struct i2400m_bootrom_header {
 191         __le32 command;         /* Compose with enum i2400_brh */
 192         __le32 target_addr;
 193         __le32 data_size;
 194         __le32 block_checksum;
 195         char payload[0];
 196 } __attribute__ ((packed));
 197
 198
 199 /*
 200  * Data / control protocol
 201  */
 202
 203 /* Packet types for the host-device interface */
 204 enum i2400m_pt {
 205         I2400M_PT_DATA = 0,
 206         I2400M_PT_CTRL,
 207         I2400M_PT_TRACE,        /* For device debug */
 208         I2400M_PT_RESET_WARM,   /* device reset */
 209         I2400M_PT_RESET_COLD,   /* USB[transport] reset, like reconnect */
 210         I2400M_PT_ILLEGAL
 211 };
 212
 213
 214 /*
 215  * Payload for a data packet
 216  *
 217  * This is prefixed to each and every outgoing DATA type.
 218  */
 219 struct i2400m_pl_data_hdr {
 220         __le32 reserved;
 221 } __attribute__((packed));
 222
 223
 224 /* Misc constants */
 225 enum {
 226         I2400M_PL_PAD = 16,     /* Payload data size alignment */
 227         I2400M_PL_SIZE_MAX = 0x3EFF,
 228         I2400M_MAX_PLS_IN_MSG = 60,
 229         /* protocol barkers: sync sequences; for notifications they
 230          * are sent in groups of four. */
 231         I2400M_H2D_PREVIEW_BARKER = 0xcafe900d,
 232         I2400M_COLD_RESET_BARKER = 0xc01dc01d,
 233         I2400M_WARM_RESET_BARKER = 0x50f750f7,
 234         I2400M_NBOOT_BARKER = 0xdeadbeef,
 235         I2400M_SBOOT_BARKER = 0x0ff1c1a1,
 236         I2400M_ACK_BARKER = 0xfeedbabe,
 237         I2400M_D2H_MSG_BARKER = 0xbeefbabe,
 238 };
 239
 240
 241 /*
 242  * Hardware payload descriptor
 243  *
 244  * Bitfields encoded in a struct to enforce typing semantics.
 245  *
 246  * Look in rx.c and tx.c for a full description of the format.
 247  */
 248 struct i2400m_pld {
 249         __le32 val;
 250 } __attribute__ ((packed));
 251
 252 #define I2400M_PLD_SIZE_MASK 0x00003fff
 253 #define I2400M_PLD_TYPE_SHIFT 16
 254 #define I2400M_PLD_TYPE_MASK 0x000f0000
 255
 256 /*
 257  * Header for a TX message or RX message
 258  *
 259  * @barker: preamble
 260  * @size: used for management of the FIFO queue buffer; before
 261  *     sending, this is converted to be a real preamble. This
 262  *     indicates the real size of the TX message that starts at this
 263  *     point. If the highest bit is set, then this message is to be
 264  *     skipped.
 265  * @sequence: sequence number of this message
 266  * @offset: offset where the message itself starts -- see the comments
 267  *     in the file header about message header and payload descriptor
 268  *     alignment.
 269  * @num_pls: number of payloads in this message
 270  * @padding: amount of padding bytes at the end of the message to make
 271  *           it be of block-size aligned
 272  *
 273  * Look in rx.c and tx.c for a full description of the format.
 274  */
 275 struct i2400m_msg_hdr {
 276         union {
 277                 __le32 barker;
 278                 __u32 size;     /* same size type as barker!! */
 279         };
 280         union {
 281                 __le32 sequence;
 282                 __u32 offset;   /* same size type as barker!! */
 283         };
 284         __le16 num_pls;
 285         __le16 rsv1;
 286         __le16 padding;
 287         __le16 rsv2;
 288         struct i2400m_pld pld[0];
 289 } __attribute__ ((packed));
 290
 291
 292
 293 /*
 294  * L3/L4 control protocol
 295  */
 296
 297 enum {
 298         /* Interface version */
 299         I2400M_L3L4_VERSION             = 0x0100,
 300 };
 301
 302 /* Message types */
 303 enum i2400m_mt {
 304         I2400M_MT_RESERVED              = 0x0000,
 305         I2400M_MT_INVALID               = 0xffff,
 306         I2400M_MT_REPORT_MASK           = 0x8000,
 307
 308         I2400M_MT_GET_SCAN_RESULT       = 0x4202,
 309         I2400M_MT_SET_SCAN_PARAM        = 0x4402,
 310         I2400M_MT_CMD_RF_CONTROL        = 0x4602,
 311         I2400M_MT_CMD_SCAN              = 0x4603,
 312         I2400M_MT_CMD_CONNECT           = 0x4604,
 313         I2400M_MT_CMD_DISCONNECT        = 0x4605,
 314         I2400M_MT_CMD_EXIT_IDLE         = 0x4606,
 315         I2400M_MT_GET_LM_VERSION        = 0x5201,
 316         I2400M_MT_GET_DEVICE_INFO       = 0x5202,
 317         I2400M_MT_GET_LINK_STATUS       = 0x5203,
 318         I2400M_MT_GET_STATISTICS        = 0x5204,
 319         I2400M_MT_GET_STATE             = 0x5205,
 320         I2400M_MT_GET_MEDIA_STATUS      = 0x5206,
 321         I2400M_MT_SET_INIT_CONFIG       = 0x5404,
 322         I2400M_MT_CMD_INIT              = 0x5601,
 323         I2400M_MT_CMD_TERMINATE         = 0x5602,
 324         I2400M_MT_CMD_MODE_OF_OP        = 0x5603,
 325         I2400M_MT_CMD_RESET_DEVICE      = 0x5604,
 326         I2400M_MT_CMD_MONITOR_CONTROL   = 0x5605,
 327         I2400M_MT_CMD_ENTER_POWERSAVE   = 0x5606,
 328         I2400M_MT_GET_TLS_OPERATION_RESULT = 0x6201,
 329         I2400M_MT_SET_EAP_SUCCESS       = 0x6402,
 330         I2400M_MT_SET_EAP_FAIL          = 0x6403,
 331         I2400M_MT_SET_EAP_KEY           = 0x6404,
 332         I2400M_MT_CMD_SEND_EAP_RESPONSE = 0x6602,
 333         I2400M_MT_REPORT_SCAN_RESULT    = 0xc002,
 334         I2400M_MT_REPORT_STATE          = 0xd002,
 335         I2400M_MT_REPORT_POWERSAVE_READY = 0xd005,
 336         I2400M_MT_REPORT_EAP_REQUEST    = 0xe002,
 337         I2400M_MT_REPORT_EAP_RESTART    = 0xe003,
 338         I2400M_MT_REPORT_ALT_ACCEPT     = 0xe004,
 339         I2400M_MT_REPORT_KEY_REQUEST    = 0xe005,
 340 };
 341
 342
 343 /*
 344  * Message Ack Status codes
 345  *
 346  * When a message is replied-to, this status is reported.
 347  */
 348 enum i2400m_ms {
 349         I2400M_MS_DONE_OK                  = 0,
 350         I2400M_MS_DONE_IN_PROGRESS         = 1,
 351         I2400M_MS_INVALID_OP               = 2,
 352         I2400M_MS_BAD_STATE                = 3,
 353         I2400M_MS_ILLEGAL_VALUE            = 4,
 354         I2400M_MS_MISSING_PARAMS           = 5,
 355         I2400M_MS_VERSION_ERROR            = 6,
 356         I2400M_MS_ACCESSIBILITY_ERROR      = 7,
 357         I2400M_MS_BUSY                     = 8,
 358         I2400M_MS_CORRUPTED_TLV            = 9,
 359         I2400M_MS_UNINITIALIZED            = 10,
 360         I2400M_MS_UNKNOWN_ERROR            = 11,
 361         I2400M_MS_PRODUCTION_ERROR         = 12,
 362         I2400M_MS_NO_RF                    = 13,
 363         I2400M_MS_NOT_READY_FOR_POWERSAVE  = 14,
 364         I2400M_MS_THERMAL_CRITICAL         = 15,
 365         I2400M_MS_MAX
 366 };
 367
 368
 369 /**
 370  * i2400m_tlv - enumeration of the different types of TLVs
 371  *
 372  * TLVs stand for type-length-value and are the header for a payload
 373  * composed of almost anything. Each payload has a type assigned
 374  * and a length.
 375  */
 376 enum i2400m_tlv {
 377         I2400M_TLV_L4_MESSAGE_VERSIONS = 129,
 378         I2400M_TLV_SYSTEM_STATE = 141,
 379         I2400M_TLV_MEDIA_STATUS = 161,
 380         I2400M_TLV_RF_OPERATION = 162,
 381         I2400M_TLV_RF_STATUS = 163,
 382         I2400M_TLV_DEVICE_RESET_TYPE = 132,
 383         I2400M_TLV_CONFIG_IDLE_PARAMETERS = 601,
 384 };
 385
 386
 387 struct i2400m_tlv_hdr {
 388         __le16 type;
 389         __le16 length;          /* payload's */
 390         __u8   pl[0];
 391 } __attribute__((packed));
 392
 393
 394 struct i2400m_l3l4_hdr {
 395         __le16 type;
 396         __le16 length;          /* payload's */
 397         __le16 version;
 398         __le16 resv1;
 399         __le16 status;
 400         __le16 resv2;
 401         struct i2400m_tlv_hdr pl[0];
 402 } __attribute__((packed));
 403
 404
 405 /**
 406  * i2400m_system_state - different states of the device
 407  */
 408 enum i2400m_system_state {
 409         I2400M_SS_UNINITIALIZED = 1,
 410         I2400M_SS_INIT,
 411         I2400M_SS_READY,
 412         I2400M_SS_SCAN,
 413         I2400M_SS_STANDBY,
 414         I2400M_SS_CONNECTING,
 415         I2400M_SS_WIMAX_CONNECTED,
 416         I2400M_SS_DATA_PATH_CONNECTED,
 417         I2400M_SS_IDLE,
 418         I2400M_SS_DISCONNECTING,
 419         I2400M_SS_OUT_OF_ZONE,
 420         I2400M_SS_SLEEPACTIVE,
 421         I2400M_SS_PRODUCTION,
 422         I2400M_SS_CONFIG,
 423         I2400M_SS_RF_OFF,
 424         I2400M_SS_RF_SHUTDOWN,
 425         I2400M_SS_DEVICE_DISCONNECT,
 426         I2400M_SS_MAX,
 427 };
 428
 429
 430 /**
 431  * i2400m_tlv_system_state - report on the state of the system
 432  *
 433  * @state: see enum i2400m_system_state
 434  */
 435 struct i2400m_tlv_system_state {
 436         struct i2400m_tlv_hdr hdr;
 437         __le32 state;
 438 } __attribute__((packed));
 439
 440
 441 struct i2400m_tlv_l4_message_versions {
 442         struct i2400m_tlv_hdr hdr;
 443         __le16 major;
 444         __le16 minor;
 445         __le16 branch;
 446         __le16 reserved;
 447 } __attribute__((packed));
 448
 449
 450 struct i2400m_tlv_detailed_device_info {
 451         struct i2400m_tlv_hdr hdr;
 452         __u8 reserved1[400];
 453         __u8 mac_address[6];
 454         __u8 reserved2[2];
 455 } __attribute__((packed));
 456
 457
 458 enum i2400m_rf_switch_status {
 459         I2400M_RF_SWITCH_ON = 1,
 460         I2400M_RF_SWITCH_OFF = 2,
 461 };
 462
 463 struct i2400m_tlv_rf_switches_status {
 464         struct i2400m_tlv_hdr hdr;
 465         __u8 sw_rf_switch;      /* 1 ON, 2 OFF */
 466         __u8 hw_rf_switch;      /* 1 ON, 2 OFF */
 467         __u8 reserved[2];
 468 } __attribute__((packed));
 469
 470
 471 enum {
 472         i2400m_rf_operation_on = 1,
 473         i2400m_rf_operation_off = 2
 474 };
 475
 476 struct i2400m_tlv_rf_operation {
 477         struct i2400m_tlv_hdr hdr;
 478         __le32 status;  /* 1 ON, 2 OFF */
 479 } __attribute__((packed));
 480
 481
 482 enum i2400m_tlv_reset_type {
 483         I2400M_RESET_TYPE_COLD = 1,
 484         I2400M_RESET_TYPE_WARM
 485 };
 486
 487 struct i2400m_tlv_device_reset_type {
 488         struct i2400m_tlv_hdr hdr;
 489         __le32 reset_type;
 490 } __attribute__((packed));
 491
 492
 493 struct i2400m_tlv_config_idle_parameters {
 494         struct i2400m_tlv_hdr hdr;
 495         __le32 idle_timeout;    /* 100 to 300000 ms [5min], 100 increments
 496                                  * 0 disabled */
 497         __le32 idle_paging_interval;    /* frames */
 498 } __attribute__((packed));
 499
 500
 501 enum i2400m_media_status {
 502         I2400M_MEDIA_STATUS_LINK_UP = 1,
 503         I2400M_MEDIA_STATUS_LINK_DOWN,
 504         I2400M_MEDIA_STATUS_LINK_RENEW,
 505 };
 506
 507 struct i2400m_tlv_media_status {
 508         struct i2400m_tlv_hdr hdr;
 509         __le32 media_status;
 510 } __attribute__((packed));
 511
 512 #endif /* #ifndef __LINUX__WIMAX__I2400M_H__ */