drivers/net/typhoon.h

   1 /* typhoon.h:   chip info for the 3Com 3CR990 family of controllers */
   2 /*
   3         Written 2002-2003 by David Dillow <dave@thedillows.org>
   4
   5         This software may be used and distributed according to the terms of
   6         the GNU General Public License (GPL), incorporated herein by reference.
   7         Drivers based on or derived from this code fall under the GPL and must
   8         retain the authorship, copyright and license notice.  This file is not
   9         a complete program and may only be used when the entire operating
  10         system is licensed under the GPL.
  11
  12         This software is available on a public web site. It may enable
  13         cryptographic capabilities of the 3Com hardware, and may be
  14         exported from the United States under License Exception "TSU"
  15         pursuant to 15 C.F.R. Section 740.13(e).
  16
  17         This work was funded by the National Library of Medicine under
  18         the Department of Energy project number 0274DD06D1 and NLM project
  19         number Y1-LM-2015-01.
  20 */
  21
  22 /* All Typhoon ring positions are specificed in bytes, and point to the
  23  * first "clean" entry in the ring -- ie the next entry we use for whatever
  24  * purpose.
  25  */
  26
  27 /* The Typhoon basic ring
  28  * ringBase:  where this ring lives (our virtual address)
  29  * lastWrite: the next entry we'll use
  30  */
  31 struct basic_ring {
  32         u8 *ringBase;
  33         u32 lastWrite;
  34 };
  35
  36 /* The Typoon transmit ring -- same as a basic ring, plus:
  37  * lastRead:      where we're at in regard to cleaning up the ring
  38  * writeRegister: register to use for writing (different for Hi & Lo rings)
  39  */
  40 struct transmit_ring {
  41         u8 *ringBase;
  42         u32 lastWrite;
  43         u32 lastRead;
  44         int writeRegister;
  45 };
  46
  47 /* The host<->Typhoon ring index structure
  48  * This indicates the current positions in the rings
  49  *
  50  * All values must be in little endian format for the 3XP
  51  *
  52  * rxHiCleared:   entry we've cleared to in the Hi receive ring
  53  * rxLoCleared:   entry we've cleared to in the Lo receive ring
  54  * rxBuffReady:   next entry we'll put a free buffer in
  55  * respCleared:   entry we've cleared to in the response ring
  56  *
  57  * txLoCleared:   entry the NIC has cleared to in the Lo transmit ring
  58  * txHiCleared:   entry the NIC has cleared to in the Hi transmit ring
  59  * rxLoReady:     entry the NIC has filled to in the Lo receive ring
  60  * rxBuffCleared: entry the NIC has cleared in the free buffer ring
  61  * cmdCleared:    entry the NIC has cleared in the command ring
  62  * respReady:     entry the NIC has filled to in the response ring
  63  * rxHiReady:     entry the NIC has filled to in the Hi receive ring
  64  */
  65 struct typhoon_indexes {
  66         /* The first four are written by the host, and read by the NIC */
  67         volatile __le32 rxHiCleared;
  68         volatile __le32 rxLoCleared;
  69         volatile __le32 rxBuffReady;
  70         volatile __le32 respCleared;
  71
  72         /* The remaining are written by the NIC, and read by the host */
  73         volatile __le32 txLoCleared;
  74         volatile __le32 txHiCleared;
  75         volatile __le32 rxLoReady;
  76         volatile __le32 rxBuffCleared;
  77         volatile __le32 cmdCleared;
  78         volatile __le32 respReady;
  79         volatile __le32 rxHiReady;
  80 } __attribute__ ((packed));
  81
  82 /* The host<->Typhoon interface
  83  * Our means of communicating where things are
  84  *
  85  * All values must be in little endian format for the 3XP
  86  *
  87  * ringIndex:   64 bit bus address of the index structure
  88  * txLoAddr:    64 bit bus address of the Lo transmit ring
  89  * txLoSize:    size (in bytes) of the Lo transmit ring
  90  * txHi*:       as above for the Hi priority transmit ring
  91  * rxLo*:       as above for the Lo priority receive ring
  92  * rxBuff*:     as above for the free buffer ring
  93  * cmd*:        as above for the command ring
  94  * resp*:       as above for the response ring
  95  * zeroAddr:    64 bit bus address of a zero word (for DMA)
  96  * rxHi*:       as above for the Hi Priority receive ring
  97  *
  98  * While there is room for 64 bit addresses, current versions of the 3XP
  99  * only do 32 bit addresses, so the *Hi for each of the above will always
 100  * be zero.
 101  */
 102 struct typhoon_interface {
 103         __le32 ringIndex;
 104         __le32 ringIndexHi;
 105         __le32 txLoAddr;
 106         __le32 txLoAddrHi;
 107         __le32 txLoSize;
 108         __le32 txHiAddr;
 109         __le32 txHiAddrHi;
 110         __le32 txHiSize;
 111         __le32 rxLoAddr;
 112         __le32 rxLoAddrHi;
 113         __le32 rxLoSize;
 114         __le32 rxBuffAddr;
 115         __le32 rxBuffAddrHi;
 116         __le32 rxBuffSize;
 117         __le32 cmdAddr;
 118         __le32 cmdAddrHi;
 119         __le32 cmdSize;
 120         __le32 respAddr;
 121         __le32 respAddrHi;
 122         __le32 respSize;
 123         __le32 zeroAddr;
 124         __le32 zeroAddrHi;
 125         __le32 rxHiAddr;
 126         __le32 rxHiAddrHi;
 127         __le32 rxHiSize;
 128 } __attribute__ ((packed));
 129
 130 /* The Typhoon transmit/fragment descriptor
 131  *
 132  * A packet is described by a packet descriptor, followed by option descriptors,
 133  * if any, then one or more fragment descriptors.
 134  *
 135  * Packet descriptor:
 136  * flags:       Descriptor type
 137  * len:i        zero, or length of this packet
 138  * addr*:       8 bytes of opaque data to the firmware -- for skb pointer
 139  * processFlags: Determine offload tasks to perform on this packet.
 140  *
 141  * Fragment descriptor:
 142  * flags:       Descriptor type
 143  * len:i        length of this fragment
 144  * addr:        low bytes of DMA address for this part of the packet
 145  * addrHi:      hi bytes of DMA address for this part of the packet
 146  * processFlags: must be zero
 147  *
 148  * TYPHOON_DESC_VALID is not mentioned in their docs, but their Linux
 149  * driver uses it.
 150  */
 151 struct tx_desc {
 152         u8  flags;
 153 #define TYPHOON_TYPE_MASK       0x07
 154 #define         TYPHOON_FRAG_DESC       0x00
 155 #define         TYPHOON_TX_DESC         0x01
 156 #define         TYPHOON_CMD_DESC        0x02
 157 #define         TYPHOON_OPT_DESC        0x03
 158 #define         TYPHOON_RX_DESC         0x04
 159 #define         TYPHOON_RESP_DESC       0x05
 160 #define TYPHOON_OPT_TYPE_MASK   0xf0
 161 #define         TYPHOON_OPT_IPSEC       0x00
 162 #define         TYPHOON_OPT_TCP_SEG     0x10
 163 #define TYPHOON_CMD_RESPOND     0x40
 164 #define TYPHOON_RESP_ERROR      0x40
 165 #define TYPHOON_RX_ERROR        0x40
 166 #define TYPHOON_DESC_VALID      0x80
 167         u8  numDesc;
 168         __le16 len;
 169         union {
 170                 struct {
 171                         __le32 addr;
 172                         __le32 addrHi;
 173                 } frag;
 174                 u64 tx_addr;    /* opaque for hardware, for TX_DESC */
 175         };
 176         __le32 processFlags;
 177 #define TYPHOON_TX_PF_NO_CRC            cpu_to_le32(0x00000001)
 178 #define TYPHOON_TX_PF_IP_CHKSUM         cpu_to_le32(0x00000002)
 179 #define TYPHOON_TX_PF_TCP_CHKSUM        cpu_to_le32(0x00000004)
 180 #define TYPHOON_TX_PF_TCP_SEGMENT       cpu_to_le32(0x00000008)
 181 #define TYPHOON_TX_PF_INSERT_VLAN       cpu_to_le32(0x00000010)
 182 #define TYPHOON_TX_PF_IPSEC             cpu_to_le32(0x00000020)
 183 #define TYPHOON_TX_PF_VLAN_PRIORITY     cpu_to_le32(0x00000040)
 184 #define TYPHOON_TX_PF_UDP_CHKSUM        cpu_to_le32(0x00000080)
 185 #define TYPHOON_TX_PF_PAD_FRAME         cpu_to_le32(0x00000100)
 186 #define TYPHOON_TX_PF_RESERVED          cpu_to_le32(0x00000e00)
 187 #define TYPHOON_TX_PF_VLAN_MASK         cpu_to_le32(0x0ffff000)
 188 #define TYPHOON_TX_PF_INTERNAL          cpu_to_le32(0xf0000000)
 189 #define TYPHOON_TX_PF_VLAN_TAG_SHIFT    12
 190 } __attribute__ ((packed));
 191
 192 /* The TCP Segmentation offload option descriptor
 193  *
 194  * flags:       descriptor type
 195  * numDesc:     must be 1
 196  * mss_flags:   bits 0-11 (little endian) are MSS, 12 is first TSO descriptor
 197  *                      13 is list TSO descriptor, set both if only one TSO
 198  * respAddrLo:  low bytes of address of the bytesTx field of this descriptor
 199  * bytesTx:     total number of bytes in this TSO request
 200  * status:      0 on completion
 201  */
 202 struct tcpopt_desc {
 203         u8  flags;
 204         u8  numDesc;
 205         __le16 mss_flags;
 206 #define TYPHOON_TSO_FIRST               cpu_to_le16(0x1000)
 207 #define TYPHOON_TSO_LAST                cpu_to_le16(0x2000)
 208         __le32 respAddrLo;
 209         __le32 bytesTx;
 210         __le32 status;
 211 } __attribute__ ((packed));
 212
 213 /* The IPSEC Offload descriptor
 214  *
 215  * flags:       descriptor type
 216  * numDesc:     must be 1
 217  * ipsecFlags:  bit 0: 0 -- generate IV, 1 -- use supplied IV
 218  * sa1, sa2:    Security Association IDs for this packet
 219  * reserved:    set to 0
 220  */
 221 struct ipsec_desc {
 222         u8  flags;
 223         u8  numDesc;
 224         __le16 ipsecFlags;
 225 #define TYPHOON_IPSEC_GEN_IV    cpu_to_le16(0x0000)
 226 #define TYPHOON_IPSEC_USE_IV    cpu_to_le16(0x0001)
 227         __le32 sa1;
 228         __le32 sa2;
 229         __le32 reserved;
 230 } __attribute__ ((packed));
 231
 232 /* The Typhoon receive descriptor (Updated by NIC)
 233  *
 234  * flags:         Descriptor type, error indication
 235  * numDesc:       Always zero
 236  * frameLen:      the size of the packet received
 237  * addr:          low 32 bytes of the virtual addr passed in for this buffer
 238  * addrHi:        high 32 bytes of the virtual addr passed in for this buffer
 239  * rxStatus:      Error if set in flags, otherwise result of offload processing
 240  * filterResults: results of filtering on packet, not used
 241  * ipsecResults:  Results of IPSEC processing
 242  * vlanTag:       the 801.2q TCI from the packet
 243  */
 244 struct rx_desc {
 245         u8  flags;
 246         u8  numDesc;
 247         __le16 frameLen;
 248         u32 addr;       /* opaque, comes from virtAddr */
 249         u32 addrHi;     /* opaque, comes from virtAddrHi */
 250         __le32 rxStatus;
 251 #define TYPHOON_RX_ERR_INTERNAL         cpu_to_le32(0x00000000)
 252 #define TYPHOON_RX_ERR_FIFO_UNDERRUN    cpu_to_le32(0x00000001)
 253 #define TYPHOON_RX_ERR_BAD_SSD          cpu_to_le32(0x00000002)
 254 #define TYPHOON_RX_ERR_RUNT             cpu_to_le32(0x00000003)
 255 #define TYPHOON_RX_ERR_CRC              cpu_to_le32(0x00000004)
 256 #define TYPHOON_RX_ERR_OVERSIZE         cpu_to_le32(0x00000005)
 257 #define TYPHOON_RX_ERR_ALIGN            cpu_to_le32(0x00000006)
 258 #define TYPHOON_RX_ERR_DRIBBLE          cpu_to_le32(0x00000007)
 259 #define TYPHOON_RX_PROTO_MASK           cpu_to_le32(0x00000003)
 260 #define TYPHOON_RX_PROTO_UNKNOWN        cpu_to_le32(0x00000000)
 261 #define TYPHOON_RX_PROTO_IP             cpu_to_le32(0x00000001)
 262 #define TYPHOON_RX_PROTO_IPX            cpu_to_le32(0x00000002)
 263 #define TYPHOON_RX_VLAN                 cpu_to_le32(0x00000004)
 264 #define TYPHOON_RX_IP_FRAG              cpu_to_le32(0x00000008)
 265 #define TYPHOON_RX_IPSEC                cpu_to_le32(0x00000010)
 266 #define TYPHOON_RX_IP_CHK_FAIL          cpu_to_le32(0x00000020)
 267 #define TYPHOON_RX_TCP_CHK_FAIL         cpu_to_le32(0x00000040)
 268 #define TYPHOON_RX_UDP_CHK_FAIL         cpu_to_le32(0x00000080)
 269 #define TYPHOON_RX_IP_CHK_GOOD          cpu_to_le32(0x00000100)
 270 #define TYPHOON_RX_TCP_CHK_GOOD         cpu_to_le32(0x00000200)
 271 #define TYPHOON_RX_UDP_CHK_GOOD         cpu_to_le32(0x00000400)
 272         __le16 filterResults;
 273 #define TYPHOON_RX_FILTER_MASK          cpu_to_le16(0x7fff)
 274 #define TYPHOON_RX_FILTERED             cpu_to_le16(0x8000)
 275         __le16 ipsecResults;
 276 #define TYPHOON_RX_OUTER_AH_GOOD        cpu_to_le16(0x0001)
 277 #define TYPHOON_RX_OUTER_ESP_GOOD       cpu_to_le16(0x0002)
 278 #define TYPHOON_RX_INNER_AH_GOOD        cpu_to_le16(0x0004)
 279 #define TYPHOON_RX_INNER_ESP_GOOD       cpu_to_le16(0x0008)
 280 #define TYPHOON_RX_OUTER_AH_FAIL        cpu_to_le16(0x0010)
 281 #define TYPHOON_RX_OUTER_ESP_FAIL       cpu_to_le16(0x0020)
 282 #define TYPHOON_RX_INNER_AH_FAIL        cpu_to_le16(0x0040)
 283 #define TYPHOON_RX_INNER_ESP_FAIL       cpu_to_le16(0x0080)
 284 #define TYPHOON_RX_UNKNOWN_SA           cpu_to_le16(0x0100)
 285 #define TYPHOON_RX_ESP_FORMAT_ERR       cpu_to_le16(0x0200)
 286         __be32 vlanTag;
 287 } __attribute__ ((packed));
 288
 289 /* The Typhoon free buffer descriptor, used to give a buffer to the NIC
 290  *
 291  * physAddr:    low 32 bits of the bus address of the buffer
 292  * physAddrHi:  high 32 bits of the bus address of the buffer, always zero
 293  * virtAddr:    low 32 bits of the skb address
 294  * virtAddrHi:  high 32 bits of the skb address, always zero
 295  *
 296  * the virt* address is basically two 32 bit cookies, just passed back
 297  * from the NIC
 298  */
 299 struct rx_free {
 300         __le32 physAddr;
 301         __le32 physAddrHi;
 302         u32 virtAddr;
 303         u32 virtAddrHi;
 304 } __attribute__ ((packed));
 305
 306 /* The Typhoon command descriptor, used for commands and responses
 307  *
 308  * flags:   descriptor type
 309  * numDesc: number of descriptors following in this command/response,
 310  *                              ie, zero for a one descriptor command
 311  * cmd:     the command
 312  * seqNo:   sequence number (unused)
 313  * parm1:   use varies by command
 314  * parm2:   use varies by command
 315  * parm3:   use varies by command
 316  */
 317 struct cmd_desc {
 318         u8  flags;
 319         u8  numDesc;
 320         __le16 cmd;
 321 #define TYPHOON_CMD_TX_ENABLE           cpu_to_le16(0x0001)
 322 #define TYPHOON_CMD_TX_DISABLE          cpu_to_le16(0x0002)
 323 #define TYPHOON_CMD_RX_ENABLE           cpu_to_le16(0x0003)
 324 #define TYPHOON_CMD_RX_DISABLE          cpu_to_le16(0x0004)
 325 #define TYPHOON_CMD_SET_RX_FILTER       cpu_to_le16(0x0005)
 326 #define TYPHOON_CMD_READ_STATS          cpu_to_le16(0x0007)
 327 #define TYPHOON_CMD_XCVR_SELECT         cpu_to_le16(0x0013)
 328 #define TYPHOON_CMD_SET_MAX_PKT_SIZE    cpu_to_le16(0x001a)
 329 #define TYPHOON_CMD_READ_MEDIA_STATUS   cpu_to_le16(0x001b)
 330 #define TYPHOON_CMD_GOTO_SLEEP          cpu_to_le16(0x0023)
 331 #define TYPHOON_CMD_SET_MULTICAST_HASH  cpu_to_le16(0x0025)
 332 #define TYPHOON_CMD_SET_MAC_ADDRESS     cpu_to_le16(0x0026)
 333 #define TYPHOON_CMD_READ_MAC_ADDRESS    cpu_to_le16(0x0027)
 334 #define TYPHOON_CMD_VLAN_TYPE_WRITE     cpu_to_le16(0x002b)
 335 #define TYPHOON_CMD_CREATE_SA           cpu_to_le16(0x0034)
 336 #define TYPHOON_CMD_DELETE_SA           cpu_to_le16(0x0035)
 337 #define TYPHOON_CMD_READ_VERSIONS       cpu_to_le16(0x0043)
 338 #define TYPHOON_CMD_IRQ_COALESCE_CTRL   cpu_to_le16(0x0045)
 339 #define TYPHOON_CMD_ENABLE_WAKE_EVENTS  cpu_to_le16(0x0049)
 340 #define TYPHOON_CMD_SET_OFFLOAD_TASKS   cpu_to_le16(0x004f)
 341 #define TYPHOON_CMD_HELLO_RESP          cpu_to_le16(0x0057)
 342 #define TYPHOON_CMD_HALT                cpu_to_le16(0x005d)
 343 #define TYPHOON_CMD_READ_IPSEC_INFO     cpu_to_le16(0x005e)
 344 #define TYPHOON_CMD_GET_IPSEC_ENABLE    cpu_to_le16(0x0067)
 345 #define TYPHOON_CMD_GET_CMD_LVL         cpu_to_le16(0x0069)
 346         u16 seqNo;
 347         __le16 parm1;
 348         __le32 parm2;
 349         __le32 parm3;
 350 } __attribute__ ((packed));
 351
 352 /* The Typhoon response descriptor, see command descriptor for details
 353  */
 354 struct resp_desc {
 355         u8  flags;
 356         u8  numDesc;
 357         __le16 cmd;
 358         __le16 seqNo;
 359         __le16 parm1;
 360         __le32 parm2;
 361         __le32 parm3;
 362 } __attribute__ ((packed));
 363
 364 #define INIT_COMMAND_NO_RESPONSE(x, command)                            \
 365         do { struct cmd_desc *_ptr = (x);                               \
 366                 memset(_ptr, 0, sizeof(struct cmd_desc));               \
 367                 _ptr->flags = TYPHOON_CMD_DESC | TYPHOON_DESC_VALID;    \
 368                 _ptr->cmd = command;                                    \
 369         } while(0)
 370
 371 /* We set seqNo to 1 if we're expecting a response from this command */
 372 #define INIT_COMMAND_WITH_RESPONSE(x, command)                          \
 373         do { struct cmd_desc *_ptr = (x);                               \
 374                 memset(_ptr, 0, sizeof(struct cmd_desc));               \
 375                 _ptr->flags = TYPHOON_CMD_RESPOND | TYPHOON_CMD_DESC;   \
 376                 _ptr->flags |= TYPHOON_DESC_VALID;                      \
 377                 _ptr->cmd = command;                                    \
 378                 _ptr->seqNo = 1;                                        \
 379         } while(0)
 380
 381 /* TYPHOON_CMD_SET_RX_FILTER filter bits (cmd.parm1)
 382  */
 383 #define TYPHOON_RX_FILTER_DIRECTED      cpu_to_le16(0x0001)
 384 #define TYPHOON_RX_FILTER_ALL_MCAST     cpu_to_le16(0x0002)
 385 #define TYPHOON_RX_FILTER_BROADCAST     cpu_to_le16(0x0004)
 386 #define TYPHOON_RX_FILTER_PROMISCOUS    cpu_to_le16(0x0008)
 387 #define TYPHOON_RX_FILTER_MCAST_HASH    cpu_to_le16(0x0010)
 388
 389 /* TYPHOON_CMD_READ_STATS response format
 390  */
 391 struct stats_resp {
 392         u8  flags;
 393         u8  numDesc;
 394         __le16 cmd;
 395         __le16 seqNo;
 396         __le16 unused;
 397         __le32 txPackets;
 398         __le64 txBytes;
 399         __le32 txDeferred;
 400         __le32 txLateCollisions;
 401         __le32 txCollisions;
 402         __le32 txCarrierLost;
 403         __le32 txMultipleCollisions;
 404         __le32 txExcessiveCollisions;
 405         __le32 txFifoUnderruns;
 406         __le32 txMulticastTxOverflows;
 407         __le32 txFiltered;
 408         __le32 rxPacketsGood;
 409         __le64 rxBytesGood;
 410         __le32 rxFifoOverruns;
 411         __le32 BadSSD;
 412         __le32 rxCrcErrors;
 413         __le32 rxOversized;
 414         __le32 rxBroadcast;
 415         __le32 rxMulticast;
 416         __le32 rxOverflow;
 417         __le32 rxFiltered;
 418         __le32 linkStatus;
 419 #define TYPHOON_LINK_STAT_MASK          cpu_to_le32(0x00000001)
 420 #define TYPHOON_LINK_GOOD               cpu_to_le32(0x00000001)
 421 #define TYPHOON_LINK_BAD                cpu_to_le32(0x00000000)
 422 #define TYPHOON_LINK_SPEED_MASK         cpu_to_le32(0x00000002)
 423 #define TYPHOON_LINK_100MBPS            cpu_to_le32(0x00000002)
 424 #define TYPHOON_LINK_10MBPS             cpu_to_le32(0x00000000)
 425 #define TYPHOON_LINK_DUPLEX_MASK        cpu_to_le32(0x00000004)
 426 #define TYPHOON_LINK_FULL_DUPLEX        cpu_to_le32(0x00000004)
 427 #define TYPHOON_LINK_HALF_DUPLEX        cpu_to_le32(0x00000000)
 428         __le32 unused2;
 429         __le32 unused3;
 430 } __attribute__ ((packed));
 431
 432 /* TYPHOON_CMD_XCVR_SELECT xcvr values (resp.parm1)
 433  */
 434 #define TYPHOON_XCVR_10HALF     cpu_to_le16(0x0000)
 435 #define TYPHOON_XCVR_10FULL     cpu_to_le16(0x0001)
 436 #define TYPHOON_XCVR_100HALF    cpu_to_le16(0x0002)
 437 #define TYPHOON_XCVR_100FULL    cpu_to_le16(0x0003)
 438 #define TYPHOON_XCVR_AUTONEG    cpu_to_le16(0x0004)
 439
 440 /* TYPHOON_CMD_READ_MEDIA_STATUS (resp.parm1)
 441  */
 442 #define TYPHOON_MEDIA_STAT_CRC_STRIP_DISABLE    cpu_to_le16(0x0004)
 443 #define TYPHOON_MEDIA_STAT_COLLISION_DETECT     cpu_to_le16(0x0010)
 444 #define TYPHOON_MEDIA_STAT_CARRIER_SENSE        cpu_to_le16(0x0020)
 445 #define TYPHOON_MEDIA_STAT_POLARITY_REV         cpu_to_le16(0x0400)
 446 #define TYPHOON_MEDIA_STAT_NO_LINK              cpu_to_le16(0x0800)
 447
 448 /* TYPHOON_CMD_SET_MULTICAST_HASH enable values (cmd.parm1)
 449  */
 450 #define TYPHOON_MCAST_HASH_DISABLE      cpu_to_le16(0x0000)
 451 #define TYPHOON_MCAST_HASH_ENABLE       cpu_to_le16(0x0001)
 452 #define TYPHOON_MCAST_HASH_SET          cpu_to_le16(0x0002)
 453
 454 /* TYPHOON_CMD_CREATE_SA descriptor and settings
 455  */
 456 struct sa_descriptor {
 457         u8  flags;
 458         u8  numDesc;
 459         u16 cmd;
 460         u16 seqNo;
 461         u16 mode;
 462 #define TYPHOON_SA_MODE_NULL            cpu_to_le16(0x0000)
 463 #define TYPHOON_SA_MODE_AH              cpu_to_le16(0x0001)
 464 #define TYPHOON_SA_MODE_ESP             cpu_to_le16(0x0002)
 465         u8  hashFlags;
 466 #define TYPHOON_SA_HASH_ENABLE          0x01
 467 #define TYPHOON_SA_HASH_SHA1            0x02
 468 #define TYPHOON_SA_HASH_MD5             0x04
 469         u8  direction;
 470 #define TYPHOON_SA_DIR_RX               0x00
 471 #define TYPHOON_SA_DIR_TX               0x01
 472         u8  encryptionFlags;
 473 #define TYPHOON_SA_ENCRYPT_ENABLE       0x01
 474 #define TYPHOON_SA_ENCRYPT_DES          0x02
 475 #define TYPHOON_SA_ENCRYPT_3DES         0x00
 476 #define TYPHOON_SA_ENCRYPT_3DES_2KEY    0x00
 477 #define TYPHOON_SA_ENCRYPT_3DES_3KEY    0x04
 478 #define TYPHOON_SA_ENCRYPT_CBC          0x08
 479 #define TYPHOON_SA_ENCRYPT_ECB          0x00
 480         u8  specifyIndex;
 481 #define TYPHOON_SA_SPECIFY_INDEX        0x01
 482 #define TYPHOON_SA_GENERATE_INDEX       0x00
 483         u32 SPI;
 484         u32 destAddr;
 485         u32 destMask;
 486         u8  integKey[20];
 487         u8  confKey[24];
 488         u32 index;
 489         u32 unused;
 490         u32 unused2;
 491 } __attribute__ ((packed));
 492
 493 /* TYPHOON_CMD_SET_OFFLOAD_TASKS bits (cmd.parm2 (Tx) & cmd.parm3 (Rx))
 494  * This is all for IPv4.
 495  */
 496 #define TYPHOON_OFFLOAD_TCP_CHKSUM      cpu_to_le32(0x00000002)
 497 #define TYPHOON_OFFLOAD_UDP_CHKSUM      cpu_to_le32(0x00000004)
 498 #define TYPHOON_OFFLOAD_IP_CHKSUM       cpu_to_le32(0x00000008)
 499 #define TYPHOON_OFFLOAD_IPSEC           cpu_to_le32(0x00000010)
 500 #define TYPHOON_OFFLOAD_BCAST_THROTTLE  cpu_to_le32(0x00000020)
 501 #define TYPHOON_OFFLOAD_DHCP_PREVENT    cpu_to_le32(0x00000040)
 502 #define TYPHOON_OFFLOAD_VLAN            cpu_to_le32(0x00000080)
 503 #define TYPHOON_OFFLOAD_FILTERING       cpu_to_le32(0x00000100)
 504 #define TYPHOON_OFFLOAD_TCP_SEGMENT     cpu_to_le32(0x00000200)
 505
 506 /* TYPHOON_CMD_ENABLE_WAKE_EVENTS bits (cmd.parm1)
 507  */
 508 #define TYPHOON_WAKE_MAGIC_PKT          cpu_to_le16(0x01)
 509 #define TYPHOON_WAKE_LINK_EVENT         cpu_to_le16(0x02)
 510 #define TYPHOON_WAKE_ICMP_ECHO          cpu_to_le16(0x04)
 511 #define TYPHOON_WAKE_ARP                cpu_to_le16(0x08)
 512
 513 /* These are used to load the firmware image on the NIC
 514  */
 515 struct typhoon_file_header {
 516         u8  tag[8];
 517         __le32 version;
 518         __le32 numSections;
 519         __le32 startAddr;
 520         __le32 hmacDigest[5];
 521 } __attribute__ ((packed));
 522
 523 struct typhoon_section_header {
 524         __le32 len;
 525         u16 checksum;
 526         u16 reserved;
 527         __le32 startAddr;
 528 } __attribute__ ((packed));
 529
 530 /* The Typhoon Register offsets
 531  */
 532 #define TYPHOON_REG_SOFT_RESET                  0x00
 533 #define TYPHOON_REG_INTR_STATUS                 0x04
 534 #define TYPHOON_REG_INTR_ENABLE                 0x08
 535 #define TYPHOON_REG_INTR_MASK                   0x0c
 536 #define TYPHOON_REG_SELF_INTERRUPT              0x10
 537 #define TYPHOON_REG_HOST2ARM7                   0x14
 538 #define TYPHOON_REG_HOST2ARM6                   0x18
 539 #define TYPHOON_REG_HOST2ARM5                   0x1c
 540 #define TYPHOON_REG_HOST2ARM4                   0x20
 541 #define TYPHOON_REG_HOST2ARM3                   0x24
 542 #define TYPHOON_REG_HOST2ARM2                   0x28
 543 #define TYPHOON_REG_HOST2ARM1                   0x2c
 544 #define TYPHOON_REG_HOST2ARM0                   0x30
 545 #define TYPHOON_REG_ARM2HOST3                   0x34
 546 #define TYPHOON_REG_ARM2HOST2                   0x38
 547 #define TYPHOON_REG_ARM2HOST1                   0x3c
 548 #define TYPHOON_REG_ARM2HOST0                   0x40
 549
 550 #define TYPHOON_REG_BOOT_DATA_LO                TYPHOON_REG_HOST2ARM5
 551 #define TYPHOON_REG_BOOT_DATA_HI                TYPHOON_REG_HOST2ARM4
 552 #define TYPHOON_REG_BOOT_DEST_ADDR              TYPHOON_REG_HOST2ARM3
 553 #define TYPHOON_REG_BOOT_CHECKSUM               TYPHOON_REG_HOST2ARM2
 554 #define TYPHOON_REG_BOOT_LENGTH                 TYPHOON_REG_HOST2ARM1
 555
 556 #define TYPHOON_REG_DOWNLOAD_BOOT_ADDR          TYPHOON_REG_HOST2ARM1
 557 #define TYPHOON_REG_DOWNLOAD_HMAC_0             TYPHOON_REG_HOST2ARM2
 558 #define TYPHOON_REG_DOWNLOAD_HMAC_1             TYPHOON_REG_HOST2ARM3
 559 #define TYPHOON_REG_DOWNLOAD_HMAC_2             TYPHOON_REG_HOST2ARM4
 560 #define TYPHOON_REG_DOWNLOAD_HMAC_3             TYPHOON_REG_HOST2ARM5
 561 #define TYPHOON_REG_DOWNLOAD_HMAC_4             TYPHOON_REG_HOST2ARM6
 562
 563 #define TYPHOON_REG_BOOT_RECORD_ADDR_HI         TYPHOON_REG_HOST2ARM2
 564 #define TYPHOON_REG_BOOT_RECORD_ADDR_LO         TYPHOON_REG_HOST2ARM1
 565
 566 #define TYPHOON_REG_TX_LO_READY                 TYPHOON_REG_HOST2ARM3
 567 #define TYPHOON_REG_CMD_READY                   TYPHOON_REG_HOST2ARM2
 568 #define TYPHOON_REG_TX_HI_READY                 TYPHOON_REG_HOST2ARM1
 569
 570 #define TYPHOON_REG_COMMAND                     TYPHOON_REG_HOST2ARM0
 571 #define TYPHOON_REG_HEARTBEAT                   TYPHOON_REG_ARM2HOST3
 572 #define TYPHOON_REG_STATUS                      TYPHOON_REG_ARM2HOST0
 573
 574 /* 3XP Reset values (TYPHOON_REG_SOFT_RESET)
 575  */
 576 #define TYPHOON_RESET_ALL       0x7f
 577 #define TYPHOON_RESET_NONE      0x00
 578
 579 /* 3XP irq bits (TYPHOON_REG_INTR{STATUS,ENABLE,MASK})
 580  *
 581  * Some of these came from OpenBSD, as the 3Com docs have it wrong
 582  * (INTR_SELF) or don't list it at all (INTR_*_ABORT)
 583  *
 584  * Enabling irqs on the Heartbeat reg (ArmToHost3) gets you an irq
 585  * about every 8ms, so don't do it.
 586  */
 587 #define TYPHOON_INTR_HOST_INT           0x00000001
 588 #define TYPHOON_INTR_ARM2HOST0          0x00000002
 589 #define TYPHOON_INTR_ARM2HOST1          0x00000004
 590 #define TYPHOON_INTR_ARM2HOST2          0x00000008
 591 #define TYPHOON_INTR_ARM2HOST3          0x00000010
 592 #define TYPHOON_INTR_DMA0               0x00000020
 593 #define TYPHOON_INTR_DMA1               0x00000040
 594 #define TYPHOON_INTR_DMA2               0x00000080
 595 #define TYPHOON_INTR_DMA3               0x00000100
 596 #define TYPHOON_INTR_MASTER_ABORT       0x00000200
 597 #define TYPHOON_INTR_TARGET_ABORT       0x00000400
 598 #define TYPHOON_INTR_SELF               0x00000800
 599 #define TYPHOON_INTR_RESERVED           0xfffff000
 600
 601 #define TYPHOON_INTR_BOOTCMD            TYPHOON_INTR_ARM2HOST0
 602
 603 #define TYPHOON_INTR_ENABLE_ALL         0xffffffef
 604 #define TYPHOON_INTR_ALL                0xffffffff
 605 #define TYPHOON_INTR_NONE               0x00000000
 606
 607 /* The commands for the 3XP chip (TYPHOON_REG_COMMAND)
 608  */
 609 #define TYPHOON_BOOTCMD_BOOT                    0x00
 610 #define TYPHOON_BOOTCMD_WAKEUP                  0xfa
 611 #define TYPHOON_BOOTCMD_DNLD_COMPLETE           0xfb
 612 #define TYPHOON_BOOTCMD_SEG_AVAILABLE           0xfc
 613 #define TYPHOON_BOOTCMD_RUNTIME_IMAGE           0xfd
 614 #define TYPHOON_BOOTCMD_REG_BOOT_RECORD         0xff
 615
 616 /* 3XP Status values (TYPHOON_REG_STATUS)
 617  */
 618 #define TYPHOON_STATUS_WAITING_FOR_BOOT         0x07
 619 #define TYPHOON_STATUS_SECOND_INIT              0x08
 620 #define TYPHOON_STATUS_RUNNING                  0x09
 621 #define TYPHOON_STATUS_WAITING_FOR_HOST         0x0d
 622 #define TYPHOON_STATUS_WAITING_FOR_SEGMENT      0x10
 623 #define TYPHOON_STATUS_SLEEPING                 0x11
 624 #define TYPHOON_STATUS_HALTED                   0x14