root/drivers/net/ethernet/sun/cassini.h

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   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /* $Id: cassini.h,v 1.16 2004/08/17 21:15:16 zaumen Exp $
   3  * cassini.h: Definitions for Sun Microsystems Cassini(+) ethernet driver.
   4  *
   5  * Copyright (C) 2004 Sun Microsystems Inc.
   6  * Copyright (c) 2003 Adrian Sun (asun@darksunrising.com)
   7  *
   8  * vendor id: 0x108E (Sun Microsystems, Inc.)
   9  * device id: 0xabba (Cassini)
  10  * revision ids: 0x01 = Cassini
  11  *               0x02 = Cassini rev 2
  12  *               0x10 = Cassini+
  13  *               0x11 = Cassini+ 0.2u
  14  *
  15  * vendor id: 0x100b (National Semiconductor)
  16  * device id: 0x0035 (DP83065/Saturn)
  17  * revision ids: 0x30 = Saturn B2
  18  *
  19  * rings are all offset from 0.
  20  *
  21  * there are two clock domains:
  22  * PCI:  33/66MHz clock
  23  * chip: 125MHz clock
  24  */
  25 
  26 #ifndef _CASSINI_H
  27 #define _CASSINI_H
  28 
  29 /* cassini register map: 2M memory mapped in 32-bit memory space accessible as
  30  * 32-bit words. there is no i/o port access. REG_ addresses are
  31  * shared between cassini and cassini+. REG_PLUS_ addresses only
  32  * appear in cassini+. REG_MINUS_ addresses only appear in cassini.
  33  */
  34 #define CAS_ID_REV2          0x02
  35 #define CAS_ID_REVPLUS       0x10
  36 #define CAS_ID_REVPLUS02u    0x11
  37 #define CAS_ID_REVSATURNB2   0x30
  38 
  39 /** global resources **/
  40 
  41 /* this register sets the weights for the weighted round robin arbiter. e.g.,
  42  * if rx weight == 1 and tx weight == 0, rx == 2x tx transfer credit
  43  * for its next turn to access the pci bus.
  44  * map: 0x0 = x1, 0x1 = x2, 0x2 = x4, 0x3 = x8
  45  * DEFAULT: 0x0, SIZE: 5 bits
  46  */
  47 #define  REG_CAWR                      0x0004  /* core arbitration weight */
  48 #define    CAWR_RX_DMA_WEIGHT_SHIFT    0
  49 #define    CAWR_RX_DMA_WEIGHT_MASK     0x03    /* [0:1] */
  50 #define    CAWR_TX_DMA_WEIGHT_SHIFT    2
  51 #define    CAWR_TX_DMA_WEIGHT_MASK     0x0C    /* [3:2] */
  52 #define    CAWR_RR_DIS                 0x10    /* [4] */
  53 
  54 /* if enabled, BIM can send bursts across PCI bus > cacheline size. burst
  55  * sizes determined by length of packet or descriptor transfer and the
  56  * max length allowed by the target.
  57  * DEFAULT: 0x0, SIZE: 1 bit
  58  */
  59 #define  REG_INF_BURST                 0x0008  /* infinite burst enable reg */
  60 #define    INF_BURST_EN                0x1     /* enable */
  61 
  62 /* top level interrupts [0-9] are auto-cleared to 0 when the status
  63  * register is read. second level interrupts [13 - 18] are cleared at
  64  * the source. tx completion register 3 is replicated in [19 - 31]
  65  * DEFAULT: 0x00000000, SIZE: 29 bits
  66  */
  67 #define  REG_INTR_STATUS               0x000C  /* interrupt status register */
  68 #define    INTR_TX_INTME               0x00000001  /* frame w/ INT ME desc bit set
  69                                                       xferred from host queue to
  70                                                       TX FIFO */
  71 #define    INTR_TX_ALL                 0x00000002  /* all xmit frames xferred into
  72                                                       TX FIFO. i.e.,
  73                                                       TX Kick == TX complete. if
  74                                                       PACED_MODE set, then TX FIFO
  75                                                       also empty */
  76 #define    INTR_TX_DONE                0x00000004  /* any frame xferred into tx
  77                                                       FIFO */
  78 #define    INTR_TX_TAG_ERROR           0x00000008  /* TX FIFO tag framing
  79                                                       corrupted. FATAL ERROR */
  80 #define    INTR_RX_DONE                0x00000010  /* at least 1 frame xferred
  81                                                       from RX FIFO to host mem.
  82                                                       RX completion reg updated.
  83                                                       may be delayed by recv
  84                                                       intr blanking. */
  85 #define    INTR_RX_BUF_UNAVAIL         0x00000020  /* no more receive buffers.
  86                                                       RX Kick == RX complete */
  87 #define    INTR_RX_TAG_ERROR           0x00000040  /* RX FIFO tag framing
  88                                                       corrupted. FATAL ERROR */
  89 #define    INTR_RX_COMP_FULL           0x00000080  /* no more room in completion
  90                                                       ring to post descriptors.
  91                                                       RX complete head incr to
  92                                                       almost reach RX complete
  93                                                       tail */
  94 #define    INTR_RX_BUF_AE              0x00000100  /* less than the
  95                                                       programmable threshold #
  96                                                       of free descr avail for
  97                                                       hw use */
  98 #define    INTR_RX_COMP_AF             0x00000200  /* less than the
  99                                                       programmable threshold #
 100                                                       of descr spaces for hw
 101                                                       use in completion descr
 102                                                       ring */
 103 #define    INTR_RX_LEN_MISMATCH        0x00000400  /* len field from MAC !=
 104                                                       len of non-reassembly pkt
 105                                                       from fifo during DMA or
 106                                                       header parser provides TCP
 107                                                       header and payload size >
 108                                                       MAC packet size.
 109                                                       FATAL ERROR */
 110 #define    INTR_SUMMARY                0x00001000  /* summary interrupt bit. this
 111                                                       bit will be set if an interrupt
 112                                                       generated on the pci bus. useful
 113                                                       when driver is polling for
 114                                                       interrupts */
 115 #define    INTR_PCS_STATUS             0x00002000  /* PCS interrupt status register */
 116 #define    INTR_TX_MAC_STATUS          0x00004000  /* TX MAC status register has at
 117                                                       least 1 unmasked interrupt set */
 118 #define    INTR_RX_MAC_STATUS          0x00008000  /* RX MAC status register has at
 119                                                       least 1 unmasked interrupt set */
 120 #define    INTR_MAC_CTRL_STATUS        0x00010000  /* MAC control status register has
 121                                                       at least 1 unmasked interrupt
 122                                                       set */
 123 #define    INTR_MIF_STATUS             0x00020000  /* MIF status register has at least
 124                                                       1 unmasked interrupt set */
 125 #define    INTR_PCI_ERROR_STATUS       0x00040000  /* PCI error status register in the
 126                                                       BIF has at least 1 unmasked
 127                                                       interrupt set */
 128 #define    INTR_TX_COMP_3_MASK         0xFFF80000  /* mask for TX completion
 129                                                       3 reg data */
 130 #define    INTR_TX_COMP_3_SHIFT        19
 131 #define    INTR_ERROR_MASK (INTR_MIF_STATUS | INTR_PCI_ERROR_STATUS | \
 132                             INTR_PCS_STATUS | INTR_RX_LEN_MISMATCH | \
 133                             INTR_TX_MAC_STATUS | INTR_RX_MAC_STATUS | \
 134                             INTR_TX_TAG_ERROR | INTR_RX_TAG_ERROR | \
 135                             INTR_MAC_CTRL_STATUS)
 136 
 137 /* determines which status events will cause an interrupt. layout same
 138  * as REG_INTR_STATUS.
 139  * DEFAULT: 0xFFFFFFFF, SIZE: 16 bits
 140  */
 141 #define  REG_INTR_MASK                 0x0010  /* Interrupt mask */
 142 
 143 /* top level interrupt bits that are cleared during read of REG_INTR_STATUS_ALIAS.
 144  * useful when driver is polling for interrupts. layout same as REG_INTR_MASK.
 145  * DEFAULT: 0x00000000, SIZE: 12 bits
 146  */
 147 #define  REG_ALIAS_CLEAR               0x0014  /* alias clear mask
 148                                                   (used w/ status alias) */
 149 /* same as REG_INTR_STATUS except that only bits cleared are those selected by
 150  * REG_ALIAS_CLEAR
 151  * DEFAULT: 0x00000000, SIZE: 29 bits
 152  */
 153 #define  REG_INTR_STATUS_ALIAS         0x001C  /* interrupt status alias
 154                                                   (selective clear) */
 155 
 156 /* DEFAULT: 0x0, SIZE: 3 bits */
 157 #define  REG_PCI_ERR_STATUS            0x1000  /* PCI error status */
 158 #define    PCI_ERR_BADACK              0x01    /* reserved in Cassini+.
 159                                                   set if no ACK64# during ABS64 cycle
 160                                                   in Cassini. */
 161 #define    PCI_ERR_DTRTO               0x02    /* delayed xaction timeout. set if
 162                                                   no read retry after 2^15 clocks */
 163 #define    PCI_ERR_OTHER               0x04    /* other PCI errors */
 164 #define    PCI_ERR_BIM_DMA_WRITE       0x08    /* BIM received 0 count DMA write req.
 165                                                   unused in Cassini. */
 166 #define    PCI_ERR_BIM_DMA_READ        0x10    /* BIM received 0 count DMA read req.
 167                                                   unused in Cassini. */
 168 #define    PCI_ERR_BIM_DMA_TIMEOUT     0x20    /* BIM received 255 retries during
 169                                                   DMA. unused in cassini. */
 170 
 171 /* mask for PCI status events that will set PCI_ERR_STATUS. if cleared, event
 172  * causes an interrupt to be generated.
 173  * DEFAULT: 0x7, SIZE: 3 bits
 174  */
 175 #define  REG_PCI_ERR_STATUS_MASK       0x1004  /* PCI Error status mask */
 176 
 177 /* used to configure PCI related parameters that are not in PCI config space.
 178  * DEFAULT: 0bxx000, SIZE: 5 bits
 179  */
 180 #define  REG_BIM_CFG                0x1008  /* BIM Configuration */
 181 #define    BIM_CFG_RESERVED0        0x001   /* reserved */
 182 #define    BIM_CFG_RESERVED1        0x002   /* reserved */
 183 #define    BIM_CFG_64BIT_DISABLE    0x004   /* disable 64-bit mode */
 184 #define    BIM_CFG_66MHZ            0x008   /* (ro) 1 = 66MHz, 0 = < 66MHz */
 185 #define    BIM_CFG_32BIT            0x010   /* (ro) 1 = 32-bit slot, 0 = 64-bit */
 186 #define    BIM_CFG_DPAR_INTR_ENABLE 0x020   /* detected parity err enable */
 187 #define    BIM_CFG_RMA_INTR_ENABLE  0x040   /* master abort intr enable */
 188 #define    BIM_CFG_RTA_INTR_ENABLE  0x080   /* target abort intr enable */
 189 #define    BIM_CFG_RESERVED2        0x100   /* reserved */
 190 #define    BIM_CFG_BIM_DISABLE      0x200   /* stop BIM DMA. use before global
 191                                                reset. reserved in Cassini. */
 192 #define    BIM_CFG_BIM_STATUS       0x400   /* (ro) 1 = BIM DMA suspended.
 193                                                   reserved in Cassini. */
 194 #define    BIM_CFG_PERROR_BLOCK     0x800  /* block PERR# to pci bus. def: 0.
 195                                                  reserved in Cassini. */
 196 
 197 /* DEFAULT: 0x00000000, SIZE: 32 bits */
 198 #define  REG_BIM_DIAG                  0x100C  /* BIM Diagnostic */
 199 #define    BIM_DIAG_MSTR_SM_MASK       0x3FFFFF00 /* PCI master controller state
 200                                                      machine bits [21:0] */
 201 #define    BIM_DIAG_BRST_SM_MASK       0x7F    /* PCI burst controller state
 202                                                   machine bits [6:0] */
 203 
 204 /* writing to SW_RESET_TX and SW_RESET_RX will issue a global
 205  * reset. poll until TX and RX read back as 0's for completion.
 206  */
 207 #define  REG_SW_RESET                  0x1010  /* Software reset */
 208 #define    SW_RESET_TX                 0x00000001  /* reset TX DMA engine. poll until
 209                                                       cleared to 0.  */
 210 #define    SW_RESET_RX                 0x00000002  /* reset RX DMA engine. poll until
 211                                                       cleared to 0. */
 212 #define    SW_RESET_RSTOUT             0x00000004  /* force RSTOUT# pin active (low).
 213                                                       resets PHY and anything else
 214                                                       connected to RSTOUT#. RSTOUT#
 215                                                       is also activated by local PCI
 216                                                       reset when hot-swap is being
 217                                                       done. */
 218 #define    SW_RESET_BLOCK_PCS_SLINK    0x00000008  /* if a global reset is done with
 219                                                       this bit set, PCS and SLINK
 220                                                       modules won't be reset.
 221                                                       i.e., link won't drop. */
 222 #define    SW_RESET_BREQ_SM_MASK       0x00007F00  /* breq state machine [6:0] */
 223 #define    SW_RESET_PCIARB_SM_MASK     0x00070000  /* pci arbitration state bits:
 224                                                       0b000: ARB_IDLE1
 225                                                       0b001: ARB_IDLE2
 226                                                       0b010: ARB_WB_ACK
 227                                                       0b011: ARB_WB_WAT
 228                                                       0b100: ARB_RB_ACK
 229                                                       0b101: ARB_RB_WAT
 230                                                       0b110: ARB_RB_END
 231                                                       0b111: ARB_WB_END */
 232 #define    SW_RESET_RDPCI_SM_MASK      0x00300000  /* read pci state bits:
 233                                                       0b00: RD_PCI_WAT
 234                                                       0b01: RD_PCI_RDY
 235                                                       0b11: RD_PCI_ACK */
 236 #define    SW_RESET_RDARB_SM_MASK      0x00C00000  /* read arbitration state bits:
 237                                                       0b00: AD_IDL_RX
 238                                                       0b01: AD_ACK_RX
 239                                                       0b10: AD_ACK_TX
 240                                                       0b11: AD_IDL_TX */
 241 #define    SW_RESET_WRPCI_SM_MASK      0x06000000  /* write pci state bits
 242                                                       0b00: WR_PCI_WAT
 243                                                       0b01: WR_PCI_RDY
 244                                                       0b11: WR_PCI_ACK */
 245 #define    SW_RESET_WRARB_SM_MASK      0x38000000  /* write arbitration state bits:
 246                                                       0b000: ARB_IDLE1
 247                                                       0b001: ARB_IDLE2
 248                                                       0b010: ARB_TX_ACK
 249                                                       0b011: ARB_TX_WAT
 250                                                       0b100: ARB_RX_ACK
 251                                                       0b110: ARB_RX_WAT */
 252 
 253 /* Cassini only. 64-bit register used to check PCI datapath. when read,
 254  * value written has both lower and upper 32-bit halves rotated to the right
 255  * one bit position. e.g., FFFFFFFF FFFFFFFF -> 7FFFFFFF 7FFFFFFF
 256  */
 257 #define  REG_MINUS_BIM_DATAPATH_TEST   0x1018  /* Cassini: BIM datapath test
 258                                                   Cassini+: reserved */
 259 
 260 /* output enables are provided for each device's chip select and for the rest
 261  * of the outputs from cassini to its local bus devices. two sw programmable
 262  * bits are connected to general purpus control/status bits.
 263  * DEFAULT: 0x7
 264  */
 265 #define  REG_BIM_LOCAL_DEV_EN          0x1020  /* BIM local device
 266                                                   output EN. default: 0x7 */
 267 #define    BIM_LOCAL_DEV_PAD           0x01    /* address bus, RW signal, and
 268                                                   OE signal output enable on the
 269                                                   local bus interface. these
 270                                                   are shared between both local
 271                                                   bus devices. tristate when 0. */
 272 #define    BIM_LOCAL_DEV_PROM          0x02    /* PROM chip select */
 273 #define    BIM_LOCAL_DEV_EXT           0x04    /* secondary local bus device chip
 274                                                   select output enable */
 275 #define    BIM_LOCAL_DEV_SOFT_0        0x08    /* sw programmable ctrl bit 0 */
 276 #define    BIM_LOCAL_DEV_SOFT_1        0x10    /* sw programmable ctrl bit 1 */
 277 #define    BIM_LOCAL_DEV_HW_RESET      0x20    /* internal hw reset. Cassini+ only. */
 278 
 279 /* access 24 entry BIM read and write buffers. put address in REG_BIM_BUFFER_ADDR
 280  * and read/write from/to it REG_BIM_BUFFER_DATA_LOW and _DATA_HI.
 281  * _DATA_HI should be the last access of the sequence.
 282  * DEFAULT: undefined
 283  */
 284 #define  REG_BIM_BUFFER_ADDR           0x1024  /* BIM buffer address. for
 285                                                   purposes. */
 286 #define    BIM_BUFFER_ADDR_MASK        0x3F    /* index (0 - 23) of buffer  */
 287 #define    BIM_BUFFER_WR_SELECT        0x40    /* write buffer access = 1
 288                                                   read buffer access = 0 */
 289 /* DEFAULT: undefined */
 290 #define  REG_BIM_BUFFER_DATA_LOW       0x1028  /* BIM buffer data low */
 291 #define  REG_BIM_BUFFER_DATA_HI        0x102C  /* BIM buffer data high */
 292 
 293 /* set BIM_RAM_BIST_START to start built-in self test for BIM read buffer.
 294  * bit auto-clears when done with status read from _SUMMARY and _PASS bits.
 295  */
 296 #define  REG_BIM_RAM_BIST              0x102C  /* BIM RAM (read buffer) BIST
 297                                                   control/status */
 298 #define    BIM_RAM_BIST_RD_START       0x01    /* start BIST for BIM read buffer */
 299 #define    BIM_RAM_BIST_WR_START       0x02    /* start BIST for BIM write buffer.
 300                                                   Cassini only. reserved in
 301                                                   Cassini+. */
 302 #define    BIM_RAM_BIST_RD_PASS        0x04    /* summary BIST pass status for read
 303                                                   buffer. */
 304 #define    BIM_RAM_BIST_WR_PASS        0x08    /* summary BIST pass status for write
 305                                                   buffer. Cassini only. reserved
 306                                                   in Cassini+. */
 307 #define    BIM_RAM_BIST_RD_LOW_PASS    0x10    /* read low bank passes BIST */
 308 #define    BIM_RAM_BIST_RD_HI_PASS     0x20    /* read high bank passes BIST */
 309 #define    BIM_RAM_BIST_WR_LOW_PASS    0x40    /* write low bank passes BIST.
 310                                                   Cassini only. reserved in
 311                                                   Cassini+. */
 312 #define    BIM_RAM_BIST_WR_HI_PASS     0x80    /* write high bank passes BIST.
 313                                                   Cassini only. reserved in
 314                                                   Cassini+. */
 315 
 316 /* ASUN: i'm not sure what this does as it's not in the spec.
 317  * DEFAULT: 0xFC
 318  */
 319 #define  REG_BIM_DIAG_MUX              0x1030  /* BIM diagnostic probe mux
 320                                                   select register */
 321 
 322 /* enable probe monitoring mode and select data appearing on the P_A* bus. bit
 323  * values for _SEL_HI_MASK and _SEL_LOW_MASK:
 324  * 0x0: internal probe[7:0] (pci arb state, wtc empty w, wtc full w, wtc empty w,
 325  *                           wtc empty r, post pci)
 326  * 0x1: internal probe[15:8] (pci wbuf comp, pci wpkt comp, pci rbuf comp,
 327  *                            pci rpkt comp, txdma wr req, txdma wr ack,
 328  *                            txdma wr rdy, txdma wr xfr done)
 329  * 0x2: internal probe[23:16] (txdma rd req, txdma rd ack, txdma rd rdy, rxdma rd,
 330  *                             rd arb state, rd pci state)
 331  * 0x3: internal probe[31:24] (rxdma req, rxdma ack, rxdma rdy, wrarb state,
 332  *                             wrpci state)
 333  * 0x4: pci io probe[7:0]     0x5: pci io probe[15:8]
 334  * 0x6: pci io probe[23:16]   0x7: pci io probe[31:24]
 335  * 0x8: pci io probe[39:32]   0x9: pci io probe[47:40]
 336  * 0xa: pci io probe[55:48]   0xb: pci io probe[63:56]
 337  * the following are not available in Cassini:
 338  * 0xc: rx probe[7:0]         0xd: tx probe[7:0]
 339  * 0xe: hp probe[7:0]         0xf: mac probe[7:0]
 340  */
 341 #define  REG_PLUS_PROBE_MUX_SELECT     0x1034 /* Cassini+: PROBE MUX SELECT */
 342 #define    PROBE_MUX_EN                0x80000000 /* allow probe signals to be
 343                                                      driven on local bus P_A[15:0]
 344                                                      for debugging */
 345 #define    PROBE_MUX_SUB_MUX_MASK      0x0000FF00 /* select sub module probe signals:
 346                                                      0x03 = mac[1:0]
 347                                                      0x0C = rx[1:0]
 348                                                      0x30 = tx[1:0]
 349                                                      0xC0 = hp[1:0] */
 350 #define    PROBE_MUX_SEL_HI_MASK       0x000000F0 /* select which module to appear
 351                                                      on P_A[15:8]. see above for
 352                                                      values. */
 353 #define    PROBE_MUX_SEL_LOW_MASK      0x0000000F /* select which module to appear
 354                                                      on P_A[7:0]. see above for
 355                                                      values. */
 356 
 357 /* values mean the same thing as REG_INTR_MASK excep that it's for INTB.
 358  DEFAULT: 0x1F */
 359 #define  REG_PLUS_INTR_MASK_1          0x1038 /* Cassini+: interrupt mask
 360                                                  register 2 for INTB */
 361 #define  REG_PLUS_INTRN_MASK(x)       (REG_PLUS_INTR_MASK_1 + ((x) - 1)*16)
 362 /* bits correspond to both _MASK and _STATUS registers. _ALT corresponds to
 363  * all of the alternate (2-4) INTR registers while _1 corresponds to only
 364  * _MASK_1 and _STATUS_1 registers.
 365  * DEFAULT: 0x7 for MASK registers, 0x0 for ALIAS_CLEAR registers
 366  */
 367 #define    INTR_RX_DONE_ALT              0x01
 368 #define    INTR_RX_COMP_FULL_ALT         0x02
 369 #define    INTR_RX_COMP_AF_ALT           0x04
 370 #define    INTR_RX_BUF_UNAVAIL_1         0x08
 371 #define    INTR_RX_BUF_AE_1              0x10 /* almost empty */
 372 #define    INTRN_MASK_RX_EN              0x80
 373 #define    INTRN_MASK_CLEAR_ALL          (INTR_RX_DONE_ALT | \
 374                                           INTR_RX_COMP_FULL_ALT | \
 375                                           INTR_RX_COMP_AF_ALT | \
 376                                           INTR_RX_BUF_UNAVAIL_1 | \
 377                                           INTR_RX_BUF_AE_1)
 378 #define  REG_PLUS_INTR_STATUS_1        0x103C /* Cassini+: interrupt status
 379                                                  register 2 for INTB. default: 0x1F */
 380 #define  REG_PLUS_INTRN_STATUS(x)       (REG_PLUS_INTR_STATUS_1 + ((x) - 1)*16)
 381 #define    INTR_STATUS_ALT_INTX_EN     0x80   /* generate INTX when one of the
 382                                                  flags are set. enables desc ring. */
 383 
 384 #define  REG_PLUS_ALIAS_CLEAR_1        0x1040 /* Cassini+: alias clear mask
 385                                                  register 2 for INTB */
 386 #define  REG_PLUS_ALIASN_CLEAR(x)      (REG_PLUS_ALIAS_CLEAR_1 + ((x) - 1)*16)
 387 
 388 #define  REG_PLUS_INTR_STATUS_ALIAS_1  0x1044 /* Cassini+: interrupt status
 389                                                  register alias 2 for INTB */
 390 #define  REG_PLUS_INTRN_STATUS_ALIAS(x) (REG_PLUS_INTR_STATUS_ALIAS_1 + ((x) - 1)*16)
 391 
 392 #define REG_SATURN_PCFG               0x106c /* pin configuration register for
 393                                                 integrated macphy */
 394 
 395 #define   SATURN_PCFG_TLA             0x00000001 /* 1 = phy actled */
 396 #define   SATURN_PCFG_FLA             0x00000002 /* 1 = phy link10led */
 397 #define   SATURN_PCFG_CLA             0x00000004 /* 1 = phy link100led */
 398 #define   SATURN_PCFG_LLA             0x00000008 /* 1 = phy link1000led */
 399 #define   SATURN_PCFG_RLA             0x00000010 /* 1 = phy duplexled */
 400 #define   SATURN_PCFG_PDS             0x00000020 /* phy debug mode.
 401                                                     0 = normal */
 402 #define   SATURN_PCFG_MTP             0x00000080 /* test point select */
 403 #define   SATURN_PCFG_GMO             0x00000100 /* GMII observe. 1 =
 404                                                     GMII on SERDES pins for
 405                                                     monitoring. */
 406 #define   SATURN_PCFG_FSI             0x00000200 /* 1 = freeze serdes/gmii. all
 407                                                     pins configed as outputs.
 408                                                     for power saving when using
 409                                                     internal phy. */
 410 #define   SATURN_PCFG_LAD             0x00000800 /* 0 = mac core led ctrl
 411                                                     polarity from strapping
 412                                                     value.
 413                                                     1 = mac core led ctrl
 414                                                     polarity active low. */
 415 
 416 
 417 /** transmit dma registers **/
 418 #define MAX_TX_RINGS_SHIFT            2
 419 #define MAX_TX_RINGS                  (1 << MAX_TX_RINGS_SHIFT)
 420 #define MAX_TX_RINGS_MASK             (MAX_TX_RINGS - 1)
 421 
 422 /* TX configuration.
 423  * descr ring sizes size = 32 * (1 << n), n < 9. e.g., 0x8 = 8k. default: 0x8
 424  * DEFAULT: 0x3F000001
 425  */
 426 #define  REG_TX_CFG                    0x2004  /* TX config */
 427 #define    TX_CFG_DMA_EN               0x00000001  /* enable TX DMA. if cleared, DMA
 428                                                       will stop after xfer of current
 429                                                       buffer has been completed. */
 430 #define    TX_CFG_FIFO_PIO_SEL         0x00000002  /* TX DMA FIFO can be
 431                                                       accessed w/ FIFO addr
 432                                                       and data registers.
 433                                                       TX DMA should be
 434                                                       disabled. */
 435 #define    TX_CFG_DESC_RING0_MASK      0x0000003C  /* # desc entries in
 436                                                       ring 1. */
 437 #define    TX_CFG_DESC_RING0_SHIFT     2
 438 #define    TX_CFG_DESC_RINGN_MASK(a)   (TX_CFG_DESC_RING0_MASK << (a)*4)
 439 #define    TX_CFG_DESC_RINGN_SHIFT(a)  (TX_CFG_DESC_RING0_SHIFT + (a)*4)
 440 #define    TX_CFG_PACED_MODE           0x00100000  /* TX_ALL only set after
 441                                                       TX FIFO becomes empty.
 442                                                       if 0, TX_ALL set
 443                                                       if descr queue empty. */
 444 #define    TX_CFG_DMA_RDPIPE_DIS       0x01000000  /* always set to 1 */
 445 #define    TX_CFG_COMPWB_Q1            0x02000000  /* completion writeback happens at
 446                                                       the end of every packet kicked
 447                                                       through Q1. */
 448 #define    TX_CFG_COMPWB_Q2            0x04000000  /* completion writeback happens at
 449                                                       the end of every packet kicked
 450                                                       through Q2. */
 451 #define    TX_CFG_COMPWB_Q3            0x08000000  /* completion writeback happens at
 452                                                       the end of every packet kicked
 453                                                       through Q3 */
 454 #define    TX_CFG_COMPWB_Q4            0x10000000  /* completion writeback happens at
 455                                                       the end of every packet kicked
 456                                                       through Q4 */
 457 #define    TX_CFG_INTR_COMPWB_DIS      0x20000000  /* disable pre-interrupt completion
 458                                                       writeback */
 459 #define    TX_CFG_CTX_SEL_MASK         0xC0000000  /* selects tx test port
 460                                                       connection
 461                                                       0b00: tx mac req,
 462                                                             tx mac retry req,
 463                                                             tx ack and tx tag.
 464                                                       0b01: txdma rd req,
 465                                                             txdma rd ack,
 466                                                             txdma rd rdy,
 467                                                             txdma rd type0
 468                                                       0b11: txdma wr req,
 469                                                             txdma wr ack,
 470                                                             txdma wr rdy,
 471                                                             txdma wr xfr done. */
 472 #define    TX_CFG_CTX_SEL_SHIFT        30
 473 
 474 /* 11-bit counters that point to next location in FIFO to be loaded/retrieved.
 475  * used for diagnostics only.
 476  */
 477 #define  REG_TX_FIFO_WRITE_PTR         0x2014  /* TX FIFO write pointer */
 478 #define  REG_TX_FIFO_SHADOW_WRITE_PTR  0x2018  /* TX FIFO shadow write
 479                                                   pointer. temp hold reg.
 480                                                   diagnostics only. */
 481 #define  REG_TX_FIFO_READ_PTR          0x201C  /* TX FIFO read pointer */
 482 #define  REG_TX_FIFO_SHADOW_READ_PTR   0x2020  /* TX FIFO shadow read
 483                                                   pointer */
 484 
 485 /* (ro) 11-bit up/down counter w/ # of frames currently in TX FIFO */
 486 #define  REG_TX_FIFO_PKT_CNT           0x2024  /* TX FIFO packet counter */
 487 
 488 /* current state of all state machines in TX */
 489 #define  REG_TX_SM_1                   0x2028  /* TX state machine reg #1 */
 490 #define    TX_SM_1_CHAIN_MASK          0x000003FF   /* chaining state machine */
 491 #define    TX_SM_1_CSUM_MASK           0x00000C00   /* checksum state machine */
 492 #define    TX_SM_1_FIFO_LOAD_MASK      0x0003F000   /* FIFO load state machine.
 493                                                        = 0x01 when TX disabled. */
 494 #define    TX_SM_1_FIFO_UNLOAD_MASK    0x003C0000   /* FIFO unload state machine */
 495 #define    TX_SM_1_CACHE_MASK          0x03C00000   /* desc. prefetch cache controller
 496                                                        state machine */
 497 #define    TX_SM_1_CBQ_ARB_MASK        0xF8000000   /* CBQ arbiter state machine */
 498 
 499 #define  REG_TX_SM_2                   0x202C  /* TX state machine reg #2 */
 500 #define    TX_SM_2_COMP_WB_MASK        0x07    /* completion writeback sm */
 501 #define    TX_SM_2_SUB_LOAD_MASK       0x38    /* sub load state machine */
 502 #define    TX_SM_2_KICK_MASK           0xC0    /* kick state machine */
 503 
 504 /* 64-bit pointer to the transmit data buffer. only the 50 LSB are incremented
 505  * while the upper 23 bits are taken from the TX descriptor
 506  */
 507 #define  REG_TX_DATA_PTR_LOW           0x2030  /* TX data pointer low */
 508 #define  REG_TX_DATA_PTR_HI            0x2034  /* TX data pointer high */
 509 
 510 /* 13 bit registers written by driver w/ descriptor value that follows
 511  * last valid xmit descriptor. kick # and complete # values are used by
 512  * the xmit dma engine to control tx descr fetching. if > 1 valid
 513  * tx descr is available within the cache line being read, cassini will
 514  * internally cache up to 4 of them. 0 on reset. _KICK = rw, _COMP = ro.
 515  */
 516 #define  REG_TX_KICK0                  0x2038  /* TX kick reg #1 */
 517 #define  REG_TX_KICKN(x)               (REG_TX_KICK0 + (x)*4)
 518 #define  REG_TX_COMP0                  0x2048  /* TX completion reg #1 */
 519 #define  REG_TX_COMPN(x)               (REG_TX_COMP0 + (x)*4)
 520 
 521 /* values of TX_COMPLETE_1-4 are written. each completion register
 522  * is 2bytes in size and contiguous. 8B allocation w/ 8B alignment.
 523  * NOTE: completion reg values are only written back prior to TX_INTME and
 524  * TX_ALL interrupts. at all other times, the most up-to-date index values
 525  * should be obtained from the REG_TX_COMPLETE_# registers.
 526  * here's the layout:
 527  * offset from base addr      completion # byte
 528  *           0                TX_COMPLETE_1_MSB
 529  *           1                TX_COMPLETE_1_LSB
 530  *           2                TX_COMPLETE_2_MSB
 531  *           3                TX_COMPLETE_2_LSB
 532  *           4                TX_COMPLETE_3_MSB
 533  *           5                TX_COMPLETE_3_LSB
 534  *           6                TX_COMPLETE_4_MSB
 535  *           7                TX_COMPLETE_4_LSB
 536  */
 537 #define  TX_COMPWB_SIZE             8
 538 #define  REG_TX_COMPWB_DB_LOW       0x2058  /* TX completion write back
 539                                                base low */
 540 #define  REG_TX_COMPWB_DB_HI        0x205C  /* TX completion write back
 541                                                base high */
 542 #define    TX_COMPWB_MSB_MASK       0x00000000000000FFULL
 543 #define    TX_COMPWB_MSB_SHIFT      0
 544 #define    TX_COMPWB_LSB_MASK       0x000000000000FF00ULL
 545 #define    TX_COMPWB_LSB_SHIFT      8
 546 #define    TX_COMPWB_NEXT(x)        ((x) >> 16)
 547 
 548 /* 53 MSB used as base address. 11 LSB assumed to be 0. TX desc pointer must
 549  * be 2KB-aligned. */
 550 #define  REG_TX_DB0_LOW         0x2060  /* TX descriptor base low #1 */
 551 #define  REG_TX_DB0_HI          0x2064  /* TX descriptor base hi #1 */
 552 #define  REG_TX_DBN_LOW(x)      (REG_TX_DB0_LOW + (x)*8)
 553 #define  REG_TX_DBN_HI(x)       (REG_TX_DB0_HI + (x)*8)
 554 
 555 /* 16-bit registers hold weights for the weighted round-robin of the
 556  * four CBQ TX descr rings. weights correspond to # bytes xferred from
 557  * host to TXFIFO in a round of WRR arbitration. can be set
 558  * dynamically with new weights set upon completion of the current
 559  * packet transfer from host memory to TXFIFO. a dummy write to any of
 560  * these registers causes a queue1 pre-emption with all historical bw
 561  * deficit data reset to 0 (useful when congestion requires a
 562  * pre-emption/re-allocation of network bandwidth
 563  */
 564 #define  REG_TX_MAXBURST_0             0x2080  /* TX MaxBurst #1 */
 565 #define  REG_TX_MAXBURST_1             0x2084  /* TX MaxBurst #2 */
 566 #define  REG_TX_MAXBURST_2             0x2088  /* TX MaxBurst #3 */
 567 #define  REG_TX_MAXBURST_3             0x208C  /* TX MaxBurst #4 */
 568 
 569 /* diagnostics access to any TX FIFO location. every access is 65
 570  * bits.  _DATA_LOW = 32 LSB, _DATA_HI_T1/T0 = 32 MSB. _TAG = tag bit.
 571  * writing _DATA_HI_T0 sets tag bit low, writing _DATA_HI_T1 sets tag
 572  * bit high.  TX_FIFO_PIO_SEL must be set for TX FIFO PIO access. if
 573  * TX FIFO data integrity is desired, TX DMA should be
 574  * disabled. _DATA_HI_Tx should be the last access of the sequence.
 575  */
 576 #define  REG_TX_FIFO_ADDR              0x2104  /* TX FIFO address */
 577 #define  REG_TX_FIFO_TAG               0x2108  /* TX FIFO tag */
 578 #define  REG_TX_FIFO_DATA_LOW          0x210C  /* TX FIFO data low */
 579 #define  REG_TX_FIFO_DATA_HI_T1        0x2110  /* TX FIFO data high t1 */
 580 #define  REG_TX_FIFO_DATA_HI_T0        0x2114  /* TX FIFO data high t0 */
 581 #define  REG_TX_FIFO_SIZE              0x2118  /* (ro) TX FIFO size = 0x090 = 9KB */
 582 
 583 /* 9-bit register controls BIST of TX FIFO. bit set indicates that the BIST
 584  * passed for the specified memory
 585  */
 586 #define  REG_TX_RAMBIST                0x211C /* TX RAMBIST control/status */
 587 #define    TX_RAMBIST_STATE            0x01C0 /* progress state of RAMBIST
 588                                                  controller state machine */
 589 #define    TX_RAMBIST_RAM33A_PASS      0x0020 /* RAM33A passed */
 590 #define    TX_RAMBIST_RAM32A_PASS      0x0010 /* RAM32A passed */
 591 #define    TX_RAMBIST_RAM33B_PASS      0x0008 /* RAM33B passed */
 592 #define    TX_RAMBIST_RAM32B_PASS      0x0004 /* RAM32B passed */
 593 #define    TX_RAMBIST_SUMMARY          0x0002 /* all RAM passed */
 594 #define    TX_RAMBIST_START            0x0001 /* write 1 to start BIST. self
 595                                                  clears on completion. */
 596 
 597 /** receive dma registers **/
 598 #define MAX_RX_DESC_RINGS              2
 599 #define MAX_RX_COMP_RINGS              4
 600 
 601 /* receive DMA channel configuration. default: 0x80910
 602  * free ring size       = (1 << n)*32  -> [32 - 8k]
 603  * completion ring size = (1 << n)*128 -> [128 - 32k], n < 9
 604  * DEFAULT: 0x80910
 605  */
 606 #define  REG_RX_CFG                     0x4000  /* RX config */
 607 #define    RX_CFG_DMA_EN                0x00000001 /* enable RX DMA. 0 stops
 608                                                          channel as soon as current
 609                                                          frame xfer has completed.
 610                                                          driver should disable MAC
 611                                                          for 200ms before disabling
 612                                                          RX */
 613 #define    RX_CFG_DESC_RING_MASK        0x0000001E /* # desc entries in RX
 614                                                          free desc ring.
 615                                                          def: 0x8 = 8k */
 616 #define    RX_CFG_DESC_RING_SHIFT       1
 617 #define    RX_CFG_COMP_RING_MASK        0x000001E0 /* # desc entries in RX complete
 618                                                          ring. def: 0x8 = 32k */
 619 #define    RX_CFG_COMP_RING_SHIFT       5
 620 #define    RX_CFG_BATCH_DIS             0x00000200 /* disable receive desc
 621                                                       batching. def: 0x0 =
 622                                                       enabled */
 623 #define    RX_CFG_SWIVEL_MASK           0x00001C00 /* byte offset of the 1st
 624                                                       data byte of the packet
 625                                                       w/in 8 byte boundares.
 626                                                       this swivels the data
 627                                                       DMA'ed to header
 628                                                       buffers, jumbo buffers
 629                                                       when header split is not
 630                                                       requested and MTU sized
 631                                                       buffers. def: 0x2 */
 632 #define    RX_CFG_SWIVEL_SHIFT          10
 633 
 634 /* cassini+ only */
 635 #define    RX_CFG_DESC_RING1_MASK       0x000F0000 /* # of desc entries in
 636                                                          RX free desc ring 2.
 637                                                          def: 0x8 = 8k */
 638 #define    RX_CFG_DESC_RING1_SHIFT      16
 639 
 640 
 641 /* the page size register allows cassini chips to do the following with
 642  * received data:
 643  * [--------------------------------------------------------------] page
 644  * [off][buf1][pad][off][buf2][pad][off][buf3][pad][off][buf4][pad]
 645  * |--------------| = PAGE_SIZE_BUFFER_STRIDE
 646  * page = PAGE_SIZE
 647  * offset = PAGE_SIZE_MTU_OFF
 648  * for the above example, MTU_BUFFER_COUNT = 4.
 649  * NOTE: as is apparent, you need to ensure that the following holds:
 650  * MTU_BUFFER_COUNT <= PAGE_SIZE/PAGE_SIZE_BUFFER_STRIDE
 651  * DEFAULT: 0x48002002 (8k pages)
 652  */
 653 #define  REG_RX_PAGE_SIZE               0x4004  /* RX page size */
 654 #define    RX_PAGE_SIZE_MASK            0x00000003 /* size of pages pointed to
 655                                                       by receive descriptors.
 656                                                       if jumbo buffers are
 657                                                       supported the page size
 658                                                       should not be < 8k.
 659                                                       0b00 = 2k, 0b01 = 4k
 660                                                       0b10 = 8k, 0b11 = 16k
 661                                                       DEFAULT: 8k */
 662 #define    RX_PAGE_SIZE_SHIFT           0
 663 #define    RX_PAGE_SIZE_MTU_COUNT_MASK  0x00007800 /* # of MTU buffers the hw
 664                                                       packs into a page.
 665                                                       DEFAULT: 4 */
 666 #define    RX_PAGE_SIZE_MTU_COUNT_SHIFT 11
 667 #define    RX_PAGE_SIZE_MTU_STRIDE_MASK 0x18000000 /* # of bytes that separate
 668                                                          each MTU buffer +
 669                                                          offset from each
 670                                                          other.
 671                                                          0b00 = 1k, 0b01 = 2k
 672                                                          0b10 = 4k, 0b11 = 8k
 673                                                          DEFAULT: 0x1 */
 674 #define    RX_PAGE_SIZE_MTU_STRIDE_SHIFT 27
 675 #define    RX_PAGE_SIZE_MTU_OFF_MASK    0xC0000000 /* offset in each page that
 676                                                       hw writes the MTU buffer
 677                                                       into.
 678                                                       0b00 = 0,
 679                                                       0b01 = 64 bytes
 680                                                       0b10 = 96, 0b11 = 128
 681                                                       DEFAULT: 0x1 */
 682 #define    RX_PAGE_SIZE_MTU_OFF_SHIFT   30
 683 
 684 /* 11-bit counter points to next location in RX FIFO to be loaded/read.
 685  * shadow write pointers enable retries in case of early receive aborts.
 686  * DEFAULT: 0x0. generated on 64-bit boundaries.
 687  */
 688 #define  REG_RX_FIFO_WRITE_PTR             0x4008  /* RX FIFO write pointer */
 689 #define  REG_RX_FIFO_READ_PTR              0x400C  /* RX FIFO read pointer */
 690 #define  REG_RX_IPP_FIFO_SHADOW_WRITE_PTR  0x4010  /* RX IPP FIFO shadow write
 691                                                       pointer */
 692 #define  REG_RX_IPP_FIFO_SHADOW_READ_PTR   0x4014  /* RX IPP FIFO shadow read
 693                                                       pointer */
 694 #define  REG_RX_IPP_FIFO_READ_PTR          0x400C  /* RX IPP FIFO read
 695                                                       pointer. (8-bit counter) */
 696 
 697 /* current state of RX DMA state engines + other info
 698  * DEFAULT: 0x0
 699  */
 700 #define  REG_RX_DEBUG                      0x401C  /* RX debug */
 701 #define    RX_DEBUG_LOAD_STATE_MASK        0x0000000F /* load state machine w/ MAC:
 702                                                          0x0 = idle,   0x1 = load_bop
 703                                                          0x2 = load 1, 0x3 = load 2
 704                                                          0x4 = load 3, 0x5 = load 4
 705                                                          0x6 = last detect
 706                                                          0x7 = wait req
 707                                                          0x8 = wait req statuss 1st
 708                                                          0x9 = load st
 709                                                          0xa = bubble mac
 710                                                          0xb = error */
 711 #define    RX_DEBUG_LM_STATE_MASK          0x00000070 /* load state machine w/ HP and
 712                                                          RX FIFO:
 713                                                          0x0 = idle,   0x1 = hp xfr
 714                                                          0x2 = wait hp ready
 715                                                          0x3 = wait flow code
 716                                                          0x4 = fifo xfer
 717                                                          0x5 = make status
 718                                                          0x6 = csum ready
 719                                                          0x7 = error */
 720 #define    RX_DEBUG_FC_STATE_MASK          0x000000180 /* flow control state machine
 721                                                          w/ MAC:
 722                                                          0x0 = idle
 723                                                          0x1 = wait xoff ack
 724                                                          0x2 = wait xon
 725                                                          0x3 = wait xon ack */
 726 #define    RX_DEBUG_DATA_STATE_MASK        0x000001E00 /* unload data state machine
 727                                                          states:
 728                                                          0x0 = idle data
 729                                                          0x1 = header begin
 730                                                          0x2 = xfer header
 731                                                          0x3 = xfer header ld
 732                                                          0x4 = mtu begin
 733                                                          0x5 = xfer mtu
 734                                                          0x6 = xfer mtu ld
 735                                                          0x7 = jumbo begin
 736                                                          0x8 = xfer jumbo
 737                                                          0x9 = xfer jumbo ld
 738                                                          0xa = reas begin
 739                                                          0xb = xfer reas
 740                                                          0xc = flush tag
 741                                                          0xd = xfer reas ld
 742                                                          0xe = error
 743                                                          0xf = bubble idle */
 744 #define    RX_DEBUG_DESC_STATE_MASK        0x0001E000 /* unload desc state machine
 745                                                          states:
 746                                                          0x0 = idle desc
 747                                                          0x1 = wait ack
 748                                                          0x9 = wait ack 2
 749                                                          0x2 = fetch desc 1
 750                                                          0xa = fetch desc 2
 751                                                          0x3 = load ptrs
 752                                                          0x4 = wait dma
 753                                                          0x5 = wait ack batch
 754                                                          0x6 = post batch
 755                                                          0x7 = xfr done */
 756 #define    RX_DEBUG_INTR_READ_PTR_MASK     0x30000000 /* interrupt read ptr of the
 757                                                          interrupt queue */
 758 #define    RX_DEBUG_INTR_WRITE_PTR_MASK    0xC0000000 /* interrupt write pointer
 759                                                          of the interrupt queue */
 760 
 761 /* flow control frames are emitted using two PAUSE thresholds:
 762  * XOFF PAUSE uses pause time value pre-programmed in the Send PAUSE MAC reg
 763  * XON PAUSE uses a pause time of 0. granularity of threshold is 64bytes.
 764  * PAUSE thresholds defined in terms of FIFO occupancy and may be translated
 765  * into FIFO vacancy using RX_FIFO_SIZE. setting ON will trigger XON frames
 766  * when FIFO reaches 0. OFF threshold should not be > size of RX FIFO. max
 767  * value is is 0x6F.
 768  * DEFAULT: 0x00078
 769  */
 770 #define  REG_RX_PAUSE_THRESH               0x4020  /* RX pause thresholds */
 771 #define    RX_PAUSE_THRESH_QUANTUM         64
 772 #define    RX_PAUSE_THRESH_OFF_MASK        0x000001FF /* XOFF PAUSE emitted when
 773                                                          RX FIFO occupancy >
 774                                                          value*64B */
 775 #define    RX_PAUSE_THRESH_OFF_SHIFT       0
 776 #define    RX_PAUSE_THRESH_ON_MASK         0x001FF000 /* XON PAUSE emitted after
 777                                                          emitting XOFF PAUSE when RX
 778                                                          FIFO occupancy falls below
 779                                                          this value*64B. must be
 780                                                          < XOFF threshold. if =
 781                                                          RX_FIFO_SIZE< XON frames are
 782                                                          never emitted. */
 783 #define    RX_PAUSE_THRESH_ON_SHIFT        12
 784 
 785 /* 13-bit register used to control RX desc fetching and intr generation. if 4+
 786  * valid RX descriptors are available, Cassini will read 4 at a time.
 787  * writing N means that all desc up to *but* excluding N are available. N must
 788  * be a multiple of 4 (N % 4 = 0). first desc should be cache-line aligned.
 789  * DEFAULT: 0 on reset
 790  */
 791 #define  REG_RX_KICK                    0x4024  /* RX kick reg */
 792 
 793 /* 8KB aligned 64-bit pointer to the base of the RX free/completion rings.
 794  * lower 13 bits of the low register are hard-wired to 0.
 795  */
 796 #define  REG_RX_DB_LOW                     0x4028  /* RX descriptor ring
 797                                                          base low */
 798 #define  REG_RX_DB_HI                      0x402C  /* RX descriptor ring
 799                                                          base hi */
 800 #define  REG_RX_CB_LOW                     0x4030  /* RX completion ring
 801                                                          base low */
 802 #define  REG_RX_CB_HI                      0x4034  /* RX completion ring
 803                                                          base hi */
 804 /* 13-bit register indicate desc used by cassini for receive frames. used
 805  * for diagnostic purposes.
 806  * DEFAULT: 0 on reset
 807  */
 808 #define  REG_RX_COMP                       0x4038  /* (ro) RX completion */
 809 
 810 /* HEAD and TAIL are used to control RX desc posting and interrupt
 811  * generation.  hw moves the head register to pass ownership to sw. sw
 812  * moves the tail register to pass ownership back to hw. to give all
 813  * entries to hw, set TAIL = HEAD.  if HEAD and TAIL indicate that no
 814  * more entries are available, DMA will pause and an interrupt will be
 815  * generated to indicate no more entries are available.  sw can use
 816  * this interrupt to reduce the # of times it must update the
 817  * completion tail register.
 818  * DEFAULT: 0 on reset
 819  */
 820 #define  REG_RX_COMP_HEAD                  0x403C  /* RX completion head */
 821 #define  REG_RX_COMP_TAIL                  0x4040  /* RX completion tail */
 822 
 823 /* values used for receive interrupt blanking. loaded each time the ISR is read
 824  * DEFAULT: 0x00000000
 825  */
 826 #define  REG_RX_BLANK                      0x4044  /* RX blanking register
 827                                                          for ISR read */
 828 #define    RX_BLANK_INTR_PKT_MASK          0x000001FF /* RX_DONE intr asserted if
 829                                                          this many sets of completion
 830                                                          writebacks (up to 2 packets)
 831                                                          occur since the last time
 832                                                          the ISR was read. 0 = no
 833                                                          packet blanking */
 834 #define    RX_BLANK_INTR_PKT_SHIFT         0
 835 #define    RX_BLANK_INTR_TIME_MASK         0x3FFFF000 /* RX_DONE interrupt asserted
 836                                                          if that many clocks were
 837                                                          counted since last time the
 838                                                          ISR was read.
 839                                                          each count is 512 core
 840                                                          clocks (125MHz). 0 = no
 841                                                          time blanking */
 842 #define    RX_BLANK_INTR_TIME_SHIFT        12
 843 
 844 /* values used for interrupt generation based on threshold values of how
 845  * many free desc and completion entries are available for hw use.
 846  * DEFAULT: 0x00000000
 847  */
 848 #define  REG_RX_AE_THRESH                  0x4048  /* RX almost empty
 849                                                          thresholds */
 850 #define    RX_AE_THRESH_FREE_MASK          0x00001FFF /* RX_BUF_AE will be
 851                                                          generated if # desc
 852                                                          avail for hw use <=
 853                                                          # */
 854 #define    RX_AE_THRESH_FREE_SHIFT         0
 855 #define    RX_AE_THRESH_COMP_MASK          0x0FFFE000 /* RX_COMP_AE will be
 856                                                          generated if # of
 857                                                          completion entries
 858                                                          avail for hw use <=
 859                                                          # */
 860 #define    RX_AE_THRESH_COMP_SHIFT         13
 861 
 862 /* probabilities for random early drop (RED) thresholds on a FIFO threshold
 863  * basis. probability should increase when the FIFO level increases. control
 864  * packets are never dropped and not counted in stats. probability programmed
 865  * on a 12.5% granularity. e.g., 0x1 = 1/8 packets dropped.
 866  * DEFAULT: 0x00000000
 867  */
 868 #define  REG_RX_RED                      0x404C  /* RX random early detect enable */
 869 #define    RX_RED_4K_6K_FIFO_MASK        0x000000FF /*  4KB < FIFO thresh < 6KB */
 870 #define    RX_RED_6K_8K_FIFO_MASK        0x0000FF00 /*  6KB < FIFO thresh < 8KB */
 871 #define    RX_RED_8K_10K_FIFO_MASK       0x00FF0000 /*  8KB < FIFO thresh < 10KB */
 872 #define    RX_RED_10K_12K_FIFO_MASK      0xFF000000 /* 10KB < FIFO thresh < 12KB */
 873 
 874 /* FIFO fullness levels for RX FIFO, RX control FIFO, and RX IPP FIFO.
 875  * RX control FIFO = # of packets in RX FIFO.
 876  * DEFAULT: 0x0
 877  */
 878 #define  REG_RX_FIFO_FULLNESS              0x4050  /* (ro) RX FIFO fullness */
 879 #define    RX_FIFO_FULLNESS_RX_FIFO_MASK   0x3FF80000 /* level w/ 8B granularity */
 880 #define    RX_FIFO_FULLNESS_IPP_FIFO_MASK  0x0007FF00 /* level w/ 8B granularity */
 881 #define    RX_FIFO_FULLNESS_RX_PKT_MASK    0x000000FF /* # packets in RX FIFO */
 882 #define  REG_RX_IPP_PACKET_COUNT           0x4054  /* RX IPP packet counter */
 883 #define  REG_RX_WORK_DMA_PTR_LOW           0x4058  /* RX working DMA ptr low */
 884 #define  REG_RX_WORK_DMA_PTR_HI            0x405C  /* RX working DMA ptr
 885                                                       high */
 886 
 887 /* BIST testing ro RX FIFO, RX control FIFO, and RX IPP FIFO. only RX BIST
 888  * START/COMPLETE is writeable. START will clear when the BIST has completed
 889  * checking all 17 RAMS.
 890  * DEFAULT: 0bxxxx xxxxx xxxx xxxx xxxx x000 0000 0000 00x0
 891  */
 892 #define  REG_RX_BIST                       0x4060  /* (ro) RX BIST */
 893 #define    RX_BIST_32A_PASS                0x80000000 /* RX FIFO 32A passed */
 894 #define    RX_BIST_33A_PASS                0x40000000 /* RX FIFO 33A passed */
 895 #define    RX_BIST_32B_PASS                0x20000000 /* RX FIFO 32B passed */
 896 #define    RX_BIST_33B_PASS                0x10000000 /* RX FIFO 33B passed */
 897 #define    RX_BIST_32C_PASS                0x08000000 /* RX FIFO 32C passed */
 898 #define    RX_BIST_33C_PASS                0x04000000 /* RX FIFO 33C passed */
 899 #define    RX_BIST_IPP_32A_PASS            0x02000000 /* RX IPP FIFO 33B passed */
 900 #define    RX_BIST_IPP_33A_PASS            0x01000000 /* RX IPP FIFO 33A passed */
 901 #define    RX_BIST_IPP_32B_PASS            0x00800000 /* RX IPP FIFO 32B passed */
 902 #define    RX_BIST_IPP_33B_PASS            0x00400000 /* RX IPP FIFO 33B passed */
 903 #define    RX_BIST_IPP_32C_PASS            0x00200000 /* RX IPP FIFO 32C passed */
 904 #define    RX_BIST_IPP_33C_PASS            0x00100000 /* RX IPP FIFO 33C passed */
 905 #define    RX_BIST_CTRL_32_PASS            0x00800000 /* RX CTRL FIFO 32 passed */
 906 #define    RX_BIST_CTRL_33_PASS            0x00400000 /* RX CTRL FIFO 33 passed */
 907 #define    RX_BIST_REAS_26A_PASS           0x00200000 /* RX Reas 26A passed */
 908 #define    RX_BIST_REAS_26B_PASS           0x00100000 /* RX Reas 26B passed */
 909 #define    RX_BIST_REAS_27_PASS            0x00080000 /* RX Reas 27 passed */
 910 #define    RX_BIST_STATE_MASK              0x00078000 /* BIST state machine */
 911 #define    RX_BIST_SUMMARY                 0x00000002 /* when BIST complete,
 912                                                          summary pass bit
 913                                                          contains AND of BIST
 914                                                          results of all 16
 915                                                          RAMS */
 916 #define    RX_BIST_START                   0x00000001 /* write 1 to start
 917                                                          BIST. self clears
 918                                                          on completion. */
 919 
 920 /* next location in RX CTRL FIFO that will be loaded w/ data from RX IPP/read
 921  * from to retrieve packet control info.
 922  * DEFAULT: 0
 923  */
 924 #define  REG_RX_CTRL_FIFO_WRITE_PTR        0x4064  /* (ro) RX control FIFO
 925                                                       write ptr */
 926 #define  REG_RX_CTRL_FIFO_READ_PTR         0x4068  /* (ro) RX control FIFO read
 927                                                       ptr */
 928 
 929 /* receive interrupt blanking. loaded each time interrupt alias register is
 930  * read.
 931  * DEFAULT: 0x0
 932  */
 933 #define  REG_RX_BLANK_ALIAS_READ           0x406C  /* RX blanking register for
 934                                                       alias read */
 935 #define    RX_BAR_INTR_PACKET_MASK         0x000001FF /* assert RX_DONE if #
 936                                                          completion writebacks
 937                                                          > # since last ISR
 938                                                          read. 0 = no
 939                                                          blanking. up to 2
 940                                                          packets per
 941                                                          completion wb. */
 942 #define    RX_BAR_INTR_TIME_MASK           0x3FFFF000 /* assert RX_DONE if #
 943                                                          clocks > # since last
 944                                                          ISR read. each count
 945                                                          is 512 core clocks
 946                                                          (125MHz). 0 = no
 947                                                          blanking. */
 948 
 949 /* diagnostic access to RX FIFO. 32 LSB accessed via DATA_LOW. 32 MSB accessed
 950  * via DATA_HI_T0 or DATA_HI_T1. TAG reads the tag bit. writing HI_T0
 951  * will unset the tag bit while writing HI_T1 will set the tag bit. to reset
 952  * to normal operation after diagnostics, write to address location 0x0.
 953  * RX_DMA_EN bit must be set to 0x0 for RX FIFO PIO access. DATA_HI should
 954  * be the last write access of a write sequence.
 955  * DEFAULT: undefined
 956  */
 957 #define  REG_RX_FIFO_ADDR                  0x4080  /* RX FIFO address */
 958 #define  REG_RX_FIFO_TAG                   0x4084  /* RX FIFO tag */
 959 #define  REG_RX_FIFO_DATA_LOW              0x4088  /* RX FIFO data low */
 960 #define  REG_RX_FIFO_DATA_HI_T0            0x408C  /* RX FIFO data high T0 */
 961 #define  REG_RX_FIFO_DATA_HI_T1            0x4090  /* RX FIFO data high T1 */
 962 
 963 /* diagnostic assess to RX CTRL FIFO. 8-bit FIFO_ADDR holds address of
 964  * 81 bit control entry and 6 bit flow id. LOW and MID are both 32-bit
 965  * accesses. HI is 7-bits with 6-bit flow id and 1 bit control
 966  * word. RX_DMA_EN must be 0 for RX CTRL FIFO PIO access. DATA_HI
 967  * should be last write access of the write sequence.
 968  * DEFAULT: undefined
 969  */
 970 #define  REG_RX_CTRL_FIFO_ADDR             0x4094  /* RX Control FIFO and
 971                                                       Batching FIFO addr */
 972 #define  REG_RX_CTRL_FIFO_DATA_LOW         0x4098  /* RX Control FIFO data
 973                                                       low */
 974 #define  REG_RX_CTRL_FIFO_DATA_MID         0x409C  /* RX Control FIFO data
 975                                                       mid */
 976 #define  REG_RX_CTRL_FIFO_DATA_HI          0x4100  /* RX Control FIFO data
 977                                                       hi and flow id */
 978 #define    RX_CTRL_FIFO_DATA_HI_CTRL       0x0001  /* upper bit of ctrl word */
 979 #define    RX_CTRL_FIFO_DATA_HI_FLOW_MASK  0x007E  /* flow id */
 980 
 981 /* diagnostic access to RX IPP FIFO. same semantics as RX_FIFO.
 982  * DEFAULT: undefined
 983  */
 984 #define  REG_RX_IPP_FIFO_ADDR              0x4104  /* RX IPP FIFO address */
 985 #define  REG_RX_IPP_FIFO_TAG               0x4108  /* RX IPP FIFO tag */
 986 #define  REG_RX_IPP_FIFO_DATA_LOW          0x410C  /* RX IPP FIFO data low */
 987 #define  REG_RX_IPP_FIFO_DATA_HI_T0        0x4110  /* RX IPP FIFO data high
 988                                                       T0 */
 989 #define  REG_RX_IPP_FIFO_DATA_HI_T1        0x4114  /* RX IPP FIFO data high
 990                                                       T1 */
 991 
 992 /* 64-bit pointer to receive data buffer in host memory used for headers and
 993  * small packets. MSB in high register. loaded by DMA state machine and
 994  * increments as DMA writes receive data. only 50 LSB are incremented. top
 995  * 13 bits taken from RX descriptor.
 996  * DEFAULT: undefined
 997  */
 998 #define  REG_RX_HEADER_PAGE_PTR_LOW        0x4118  /* (ro) RX header page ptr
 999                                                       low */
1000 #define  REG_RX_HEADER_PAGE_PTR_HI         0x411C  /* (ro) RX header page ptr
1001                                                       high */
1002 #define  REG_RX_MTU_PAGE_PTR_LOW           0x4120  /* (ro) RX MTU page pointer
1003                                                       low */
1004 #define  REG_RX_MTU_PAGE_PTR_HI            0x4124  /* (ro) RX MTU page pointer
1005                                                       high */
1006 
1007 /* PIO diagnostic access to RX reassembly DMA Table RAM. 6-bit register holds
1008  * one of 64 79-bit locations in the RX Reassembly DMA table and the addr of
1009  * one of the 64 byte locations in the Batching table. LOW holds 32 LSB.
1010  * MID holds the next 32 LSB. HIGH holds the 15 MSB. RX_DMA_EN must be set
1011  * to 0 for PIO access. DATA_HIGH should be last write of write sequence.
1012  * layout:
1013  * reassmbl ptr [78:15] | reassmbl index [14:1] | reassmbl entry valid [0]
1014  * DEFAULT: undefined
1015  */
1016 #define  REG_RX_TABLE_ADDR             0x4128  /* RX reassembly DMA table
1017                                                   address */
1018 #define    RX_TABLE_ADDR_MASK          0x0000003F /* address mask */
1019 
1020 #define  REG_RX_TABLE_DATA_LOW         0x412C  /* RX reassembly DMA table
1021                                                   data low */
1022 #define  REG_RX_TABLE_DATA_MID         0x4130  /* RX reassembly DMA table
1023                                                   data mid */
1024 #define  REG_RX_TABLE_DATA_HI          0x4134  /* RX reassembly DMA table
1025                                                   data high */
1026 
1027 /* cassini+ only */
1028 /* 8KB aligned 64-bit pointer to base of RX rings. lower 13 bits hardwired to
1029  * 0. same semantics as primary desc/complete rings.
1030  */
1031 #define  REG_PLUS_RX_DB1_LOW            0x4200  /* RX descriptor ring
1032                                                    2 base low */
1033 #define  REG_PLUS_RX_DB1_HI             0x4204  /* RX descriptor ring
1034                                                    2 base high */
1035 #define  REG_PLUS_RX_CB1_LOW            0x4208  /* RX completion ring
1036                                                    2 base low. 4 total */
1037 #define  REG_PLUS_RX_CB1_HI             0x420C  /* RX completion ring
1038                                                    2 base high. 4 total */
1039 #define  REG_PLUS_RX_CBN_LOW(x)        (REG_PLUS_RX_CB1_LOW + 8*((x) - 1))
1040 #define  REG_PLUS_RX_CBN_HI(x)         (REG_PLUS_RX_CB1_HI + 8*((x) - 1))
1041 #define  REG_PLUS_RX_KICK1             0x4220  /* RX Kick 2 register */
1042 #define  REG_PLUS_RX_COMP1             0x4224  /* (ro) RX completion 2
1043                                                   reg */
1044 #define  REG_PLUS_RX_COMP1_HEAD        0x4228  /* (ro) RX completion 2
1045                                                   head reg. 4 total. */
1046 #define  REG_PLUS_RX_COMP1_TAIL        0x422C  /* RX completion 2
1047                                                   tail reg. 4 total. */
1048 #define  REG_PLUS_RX_COMPN_HEAD(x)    (REG_PLUS_RX_COMP1_HEAD + 8*((x) - 1))
1049 #define  REG_PLUS_RX_COMPN_TAIL(x)    (REG_PLUS_RX_COMP1_TAIL + 8*((x) - 1))
1050 #define  REG_PLUS_RX_AE1_THRESH        0x4240  /* RX almost empty 2
1051                                                   thresholds */
1052 #define    RX_AE1_THRESH_FREE_MASK     RX_AE_THRESH_FREE_MASK
1053 #define    RX_AE1_THRESH_FREE_SHIFT    RX_AE_THRESH_FREE_SHIFT
1054 
1055 /** header parser registers **/
1056 
1057 /* RX parser configuration register.
1058  * DEFAULT: 0x1651004
1059  */
1060 #define  REG_HP_CFG                       0x4140  /* header parser
1061                                                      configuration reg */
1062 #define    HP_CFG_PARSE_EN                0x00000001 /* enab header parsing */
1063 #define    HP_CFG_NUM_CPU_MASK            0x000000FC /* # processors
1064                                                       0 = 64. 0x3f = 63 */
1065 #define    HP_CFG_NUM_CPU_SHIFT           2
1066 #define    HP_CFG_SYN_INC_MASK            0x00000100 /* SYN bit won't increment
1067                                                         TCP seq # by one when
1068                                                         stored in FDBM */
1069 #define    HP_CFG_TCP_THRESH_MASK         0x000FFE00 /* # bytes of TCP data
1070                                                         needed to be considered
1071                                                         for reassembly */
1072 #define    HP_CFG_TCP_THRESH_SHIFT        9
1073 
1074 /* access to RX Instruction RAM. 5-bit register/counter holds addr
1075  * of 39 bit entry to be read/written. 32 LSB in _DATA_LOW. 7 MSB in _DATA_HI.
1076  * RX_DMA_EN must be 0 for RX instr PIO access. DATA_HI should be last access
1077  * of sequence.
1078  * DEFAULT: undefined
1079  */
1080 #define  REG_HP_INSTR_RAM_ADDR             0x4144  /* HP instruction RAM
1081                                                       address */
1082 #define    HP_INSTR_RAM_ADDR_MASK          0x01F   /* 5-bit mask */
1083 #define  REG_HP_INSTR_RAM_DATA_LOW         0x4148  /* HP instruction RAM
1084                                                       data low */
1085 #define    HP_INSTR_RAM_LOW_OUTMASK_MASK   0x0000FFFF
1086 #define    HP_INSTR_RAM_LOW_OUTMASK_SHIFT  0
1087 #define    HP_INSTR_RAM_LOW_OUTSHIFT_MASK  0x000F0000
1088 #define    HP_INSTR_RAM_LOW_OUTSHIFT_SHIFT 16
1089 #define    HP_INSTR_RAM_LOW_OUTEN_MASK     0x00300000
1090 #define    HP_INSTR_RAM_LOW_OUTEN_SHIFT    20
1091 #define    HP_INSTR_RAM_LOW_OUTARG_MASK    0xFFC00000
1092 #define    HP_INSTR_RAM_LOW_OUTARG_SHIFT   22
1093 #define  REG_HP_INSTR_RAM_DATA_MID         0x414C  /* HP instruction RAM
1094                                                       data mid */
1095 #define    HP_INSTR_RAM_MID_OUTARG_MASK    0x00000003
1096 #define    HP_INSTR_RAM_MID_OUTARG_SHIFT   0
1097 #define    HP_INSTR_RAM_MID_OUTOP_MASK     0x0000003C
1098 #define    HP_INSTR_RAM_MID_OUTOP_SHIFT    2
1099 #define    HP_INSTR_RAM_MID_FNEXT_MASK     0x000007C0
1100 #define    HP_INSTR_RAM_MID_FNEXT_SHIFT    6
1101 #define    HP_INSTR_RAM_MID_FOFF_MASK      0x0003F800
1102 #define    HP_INSTR_RAM_MID_FOFF_SHIFT     11
1103 #define    HP_INSTR_RAM_MID_SNEXT_MASK     0x007C0000
1104 #define    HP_INSTR_RAM_MID_SNEXT_SHIFT    18
1105 #define    HP_INSTR_RAM_MID_SOFF_MASK      0x3F800000
1106 #define    HP_INSTR_RAM_MID_SOFF_SHIFT     23
1107 #define    HP_INSTR_RAM_MID_OP_MASK        0xC0000000
1108 #define    HP_INSTR_RAM_MID_OP_SHIFT       30
1109 #define  REG_HP_INSTR_RAM_DATA_HI          0x4150  /* HP instruction RAM
1110                                                       data high */
1111 #define    HP_INSTR_RAM_HI_VAL_MASK        0x0000FFFF
1112 #define    HP_INSTR_RAM_HI_VAL_SHIFT       0
1113 #define    HP_INSTR_RAM_HI_MASK_MASK       0xFFFF0000
1114 #define    HP_INSTR_RAM_HI_MASK_SHIFT      16
1115 
1116 /* PIO access into RX Header parser data RAM and flow database.
1117  * 11-bit register. Data fills the LSB portion of bus if less than 32 bits.
1118  * DATA_RAM: write RAM_FDB_DATA with index to access DATA_RAM.
1119  * RAM bytes = 4*(x - 1) + [3:0]. e.g., 0 -> [3:0], 31 -> [123:120]
1120  * FLOWDB: write DATA_RAM_FDB register and then read/write FDB1-12 to access
1121  * flow database.
1122  * RX_DMA_EN must be 0 for RX parser RAM PIO access. RX Parser RAM data reg
1123  * should be the last write access of the write sequence.
1124  * DEFAULT: undefined
1125  */
1126 #define  REG_HP_DATA_RAM_FDB_ADDR          0x4154  /* HP data and FDB
1127                                                       RAM address */
1128 #define    HP_DATA_RAM_FDB_DATA_MASK       0x001F  /* select 1 of 86 byte
1129                                                       locations in header
1130                                                       parser data ram to
1131                                                       read/write */
1132 #define    HP_DATA_RAM_FDB_FDB_MASK        0x3F00  /* 1 of 64 353-bit locations
1133                                                       in the flow database */
1134 #define  REG_HP_DATA_RAM_DATA              0x4158  /* HP data RAM data */
1135 
1136 /* HP flow database registers: 1 - 12, 0x415C - 0x4188, 4 8-bit bytes
1137  * FLOW_DB(1) = IP_SA[127:96], FLOW_DB(2) = IP_SA[95:64]
1138  * FLOW_DB(3) = IP_SA[63:32],  FLOW_DB(4) = IP_SA[31:0]
1139  * FLOW_DB(5) = IP_DA[127:96], FLOW_DB(6) = IP_DA[95:64]
1140  * FLOW_DB(7) = IP_DA[63:32],  FLOW_DB(8) = IP_DA[31:0]
1141  * FLOW_DB(9) = {TCP_SP[15:0],TCP_DP[15:0]}
1142  * FLOW_DB(10) = bit 0 has value for flow valid
1143  * FLOW_DB(11) = TCP_SEQ[63:32], FLOW_DB(12) = TCP_SEQ[31:0]
1144  */
1145 #define  REG_HP_FLOW_DB0                   0x415C  /* HP flow database 1 reg */
1146 #define  REG_HP_FLOW_DBN(x)                (REG_HP_FLOW_DB0 + (x)*4)
1147 
1148 /* diagnostics for RX Header Parser block.
1149  * ASUN: the header parser state machine register is used for diagnostics
1150  * purposes. however, the spec doesn't have any details on it.
1151  */
1152 #define  REG_HP_STATE_MACHINE              0x418C  /* (ro) HP state machine */
1153 #define  REG_HP_STATUS0                    0x4190  /* (ro) HP status 1 */
1154 #define    HP_STATUS0_SAP_MASK             0xFFFF0000 /* SAP */
1155 #define    HP_STATUS0_L3_OFF_MASK          0x0000FE00 /* L3 offset */
1156 #define    HP_STATUS0_LB_CPUNUM_MASK       0x000001F8 /* load balancing CPU
1157                                                          number */
1158 #define    HP_STATUS0_HRP_OPCODE_MASK      0x00000007 /* HRP opcode */
1159 
1160 #define  REG_HP_STATUS1                    0x4194  /* (ro) HP status 2 */
1161 #define    HP_STATUS1_ACCUR2_MASK          0xE0000000 /* accu R2[6:4] */
1162 #define    HP_STATUS1_FLOWID_MASK          0x1F800000 /* flow id */
1163 #define    HP_STATUS1_TCP_OFF_MASK         0x007F0000 /* tcp payload offset */
1164 #define    HP_STATUS1_TCP_SIZE_MASK        0x0000FFFF /* tcp payload size */
1165 
1166 #define  REG_HP_STATUS2                    0x4198  /* (ro) HP status 3 */
1167 #define    HP_STATUS2_ACCUR2_MASK          0xF0000000 /* accu R2[3:0] */
1168 #define    HP_STATUS2_CSUM_OFF_MASK        0x07F00000 /* checksum start
1169                                                          start offset */
1170 #define    HP_STATUS2_ACCUR1_MASK          0x000FE000 /* accu R1 */
1171 #define    HP_STATUS2_FORCE_DROP           0x00001000 /* force drop */
1172 #define    HP_STATUS2_BWO_REASSM           0x00000800 /* batching w/o
1173                                                          reassembly */
1174 #define    HP_STATUS2_JH_SPLIT_EN          0x00000400 /* jumbo header split
1175                                                          enable */
1176 #define    HP_STATUS2_FORCE_TCP_NOCHECK    0x00000200 /* force tcp no payload
1177                                                          check */
1178 #define    HP_STATUS2_DATA_MASK_ZERO       0x00000100 /* mask of data length
1179                                                          equal to zero */
1180 #define    HP_STATUS2_FORCE_TCP_CHECK      0x00000080 /* force tcp payload
1181                                                          chk */
1182 #define    HP_STATUS2_MASK_TCP_THRESH      0x00000040 /* mask of payload
1183                                                          threshold */
1184 #define    HP_STATUS2_NO_ASSIST            0x00000020 /* no assist */
1185 #define    HP_STATUS2_CTRL_PACKET_FLAG     0x00000010 /* control packet flag */
1186 #define    HP_STATUS2_TCP_FLAG_CHECK       0x00000008 /* tcp flag check */
1187 #define    HP_STATUS2_SYN_FLAG             0x00000004 /* syn flag */
1188 #define    HP_STATUS2_TCP_CHECK            0x00000002 /* tcp payload chk */
1189 #define    HP_STATUS2_TCP_NOCHECK          0x00000001 /* tcp no payload chk */
1190 
1191 /* BIST for header parser(HP) and flow database memories (FDBM). set _START
1192  * to start BIST. controller clears _START on completion. _START can also
1193  * be cleared to force termination of BIST. a bit set indicates that that
1194  * memory passed its BIST.
1195  */
1196 #define  REG_HP_RAM_BIST                   0x419C  /* HP RAM BIST reg */
1197 #define    HP_RAM_BIST_HP_DATA_PASS        0x80000000 /* HP data ram */
1198 #define    HP_RAM_BIST_HP_INSTR0_PASS      0x40000000 /* HP instr ram 0 */
1199 #define    HP_RAM_BIST_HP_INSTR1_PASS      0x20000000 /* HP instr ram 1 */
1200 #define    HP_RAM_BIST_HP_INSTR2_PASS      0x10000000 /* HP instr ram 2 */
1201 #define    HP_RAM_BIST_FDBM_AGE0_PASS      0x08000000 /* FDBM aging RAM0 */
1202 #define    HP_RAM_BIST_FDBM_AGE1_PASS      0x04000000 /* FDBM aging RAM1 */
1203 #define    HP_RAM_BIST_FDBM_FLOWID00_PASS  0x02000000 /* FDBM flowid RAM0
1204                                                          bank 0 */
1205 #define    HP_RAM_BIST_FDBM_FLOWID10_PASS  0x01000000 /* FDBM flowid RAM1
1206                                                          bank 0 */
1207 #define    HP_RAM_BIST_FDBM_FLOWID20_PASS  0x00800000 /* FDBM flowid RAM2
1208                                                          bank 0 */
1209 #define    HP_RAM_BIST_FDBM_FLOWID30_PASS  0x00400000 /* FDBM flowid RAM3
1210                                                          bank 0 */
1211 #define    HP_RAM_BIST_FDBM_FLOWID01_PASS  0x00200000 /* FDBM flowid RAM0
1212                                                          bank 1 */
1213 #define    HP_RAM_BIST_FDBM_FLOWID11_PASS  0x00100000 /* FDBM flowid RAM1
1214                                                          bank 2 */
1215 #define    HP_RAM_BIST_FDBM_FLOWID21_PASS  0x00080000 /* FDBM flowid RAM2
1216                                                          bank 1 */
1217 #define    HP_RAM_BIST_FDBM_FLOWID31_PASS  0x00040000 /* FDBM flowid RAM3
1218                                                          bank 1 */
1219 #define    HP_RAM_BIST_FDBM_TCPSEQ_PASS    0x00020000 /* FDBM tcp sequence
1220                                                          RAM */
1221 #define    HP_RAM_BIST_SUMMARY             0x00000002 /* all BIST tests */
1222 #define    HP_RAM_BIST_START               0x00000001 /* start/stop BIST */
1223 
1224 
1225 /** MAC registers.  **/
1226 /* reset bits are set using a PIO write and self-cleared after the command
1227  * execution has completed.
1228  */
1229 #define  REG_MAC_TX_RESET                  0x6000  /* TX MAC software reset
1230                                                       command (default: 0x0) */
1231 #define  REG_MAC_RX_RESET                  0x6004  /* RX MAC software reset
1232                                                       command (default: 0x0) */
1233 /* execute a pause flow control frame transmission
1234  DEFAULT: 0x0XXXX */
1235 #define  REG_MAC_SEND_PAUSE                0x6008  /* send pause command reg */
1236 #define    MAC_SEND_PAUSE_TIME_MASK        0x0000FFFF /* value of pause time
1237                                                          to be sent on network
1238                                                          in units of slot
1239                                                          times */
1240 #define    MAC_SEND_PAUSE_SEND             0x00010000 /* send pause flow ctrl
1241                                                          frame on network */
1242 
1243 /* bit set indicates that event occurred. auto-cleared when status register
1244  * is read and have corresponding mask bits in mask register. events will
1245  * trigger an interrupt if the corresponding mask bit is 0.
1246  * status register default: 0x00000000
1247  * mask register default = 0xFFFFFFFF on reset
1248  */
1249 #define  REG_MAC_TX_STATUS                 0x6010  /* TX MAC status reg */
1250 #define    MAC_TX_FRAME_XMIT               0x0001  /* successful frame
1251                                                       transmision */
1252 #define    MAC_TX_UNDERRUN                 0x0002  /* terminated frame
1253                                                       transmission due to
1254                                                       data starvation in the
1255                                                       xmit data path */
1256 #define    MAC_TX_MAX_PACKET_ERR           0x0004  /* frame exceeds max allowed
1257                                                       length passed to TX MAC
1258                                                       by the DMA engine */
1259 #define    MAC_TX_COLL_NORMAL              0x0008  /* rollover of the normal
1260                                                       collision counter */
1261 #define    MAC_TX_COLL_EXCESS              0x0010  /* rollover of the excessive
1262                                                       collision counter */
1263 #define    MAC_TX_COLL_LATE                0x0020  /* rollover of the late
1264                                                       collision counter */
1265 #define    MAC_TX_COLL_FIRST               0x0040  /* rollover of the first
1266                                                       collision counter */
1267 #define    MAC_TX_DEFER_TIMER              0x0080  /* rollover of the defer
1268                                                       timer */
1269 #define    MAC_TX_PEAK_ATTEMPTS            0x0100  /* rollover of the peak
1270                                                       attempts counter */
1271 
1272 #define  REG_MAC_RX_STATUS                 0x6014  /* RX MAC status reg */
1273 #define    MAC_RX_FRAME_RECV               0x0001  /* successful receipt of
1274                                                       a frame */
1275 #define    MAC_RX_OVERFLOW                 0x0002  /* dropped frame due to
1276                                                       RX FIFO overflow */
1277 #define    MAC_RX_FRAME_COUNT              0x0004  /* rollover of receive frame
1278                                                       counter */
1279 #define    MAC_RX_ALIGN_ERR                0x0008  /* rollover of alignment
1280                                                       error counter */
1281 #define    MAC_RX_CRC_ERR                  0x0010  /* rollover of crc error
1282                                                       counter */
1283 #define    MAC_RX_LEN_ERR                  0x0020  /* rollover of length
1284                                                       error counter */
1285 #define    MAC_RX_VIOL_ERR                 0x0040  /* rollover of code
1286                                                       violation error */
1287 
1288 /* DEFAULT: 0xXXXX0000 on reset */
1289 #define  REG_MAC_CTRL_STATUS               0x6018  /* MAC control status reg */
1290 #define    MAC_CTRL_PAUSE_RECEIVED         0x00000001  /* successful
1291                                                           reception of a
1292                                                           pause control
1293                                                           frame */
1294 #define    MAC_CTRL_PAUSE_STATE            0x00000002  /* MAC has made a
1295                                                           transition from
1296                                                           "not paused" to
1297                                                           "paused" */
1298 #define    MAC_CTRL_NOPAUSE_STATE          0x00000004  /* MAC has made a
1299                                                           transition from
1300                                                           "paused" to "not
1301                                                           paused" */
1302 #define    MAC_CTRL_PAUSE_TIME_MASK        0xFFFF0000  /* value of pause time
1303                                                           operand that was
1304                                                           received in the last
1305                                                           pause flow control
1306                                                           frame */
1307 
1308 /* layout identical to TX MAC[8:0] */
1309 #define  REG_MAC_TX_MASK                   0x6020  /* TX MAC mask reg */
1310 /* layout identical to RX MAC[6:0] */
1311 #define  REG_MAC_RX_MASK                   0x6024  /* RX MAC mask reg */
1312 /* layout identical to CTRL MAC[2:0] */
1313 #define  REG_MAC_CTRL_MASK                 0x6028  /* MAC control mask reg */
1314 
1315 /* to ensure proper operation, CFG_EN must be cleared to 0 and a delay
1316  * imposed before writes to other bits in the TX_MAC_CFG register or any of
1317  * the MAC parameters is performed. delay dependent upon time required to
1318  * transmit a maximum size frame (= MAC_FRAMESIZE_MAX*8/Mbps). e.g.,
1319  * the delay for a 1518-byte frame on a 100Mbps network is 125us.
1320  * alternatively, just poll TX_CFG_EN until it reads back as 0.
1321  * NOTE: on half-duplex 1Gbps, TX_CFG_CARRIER_EXTEND and
1322  * RX_CFG_CARRIER_EXTEND should be set and the SLOT_TIME register should
1323  * be 0x200 (slot time of 512 bytes)
1324  */
1325 #define  REG_MAC_TX_CFG                 0x6030  /* TX MAC config reg */
1326 #define    MAC_TX_CFG_EN                0x0001  /* enable TX MAC. 0 will
1327                                                       force TXMAC state
1328                                                       machine to remain in
1329                                                       idle state or to
1330                                                       transition to idle state
1331                                                       on completion of an
1332                                                       ongoing packet. */
1333 #define    MAC_TX_CFG_IGNORE_CARRIER    0x0002  /* disable CSMA/CD deferral
1334                                                    process. set to 1 when
1335                                                    full duplex and 0 when
1336                                                    half duplex */
1337 #define    MAC_TX_CFG_IGNORE_COLL       0x0004  /* disable CSMA/CD backoff
1338                                                    algorithm. set to 1 when
1339                                                    full duplex and 0 when
1340                                                    half duplex */
1341 #define    MAC_TX_CFG_IPG_EN            0x0008  /* enable extension of the
1342                                                    Rx-to-TX IPG. after
1343                                                    receiving a frame, TX
1344                                                    MAC will reset its
1345                                                    deferral process to
1346                                                    carrier sense for the
1347                                                    amount of time = IPG0 +
1348                                                    IPG1 and commit to
1349                                                    transmission for time
1350                                                    specified in IPG2. when
1351                                                    0 or when xmitting frames
1352                                                    back-to-pack (Tx-to-Tx
1353                                                    IPG), TX MAC ignores
1354                                                    IPG0 and will only use
1355                                                    IPG1 for deferral time.
1356                                                    IPG2 still used. */
1357 #define    MAC_TX_CFG_NEVER_GIVE_UP_EN  0x0010  /* TX MAC will not easily
1358                                                    give up on frame
1359                                                    xmission. if backoff
1360                                                    algorithm reaches the
1361                                                    ATTEMPT_LIMIT, it will
1362                                                    clear attempts counter
1363                                                    and continue trying to
1364                                                    send the frame as
1365                                                    specified by
1366                                                    GIVE_UP_LIM. when 0,
1367                                                    TX MAC will execute
1368                                                    standard CSMA/CD prot. */
1369 #define    MAC_TX_CFG_NEVER_GIVE_UP_LIM 0x0020  /* when set, TX MAC will
1370                                                    continue to try to xmit
1371                                                    until successful. when
1372                                                    0, TX MAC will continue
1373                                                    to try xmitting until
1374                                                    successful or backoff
1375                                                    algorithm reaches
1376                                                    ATTEMPT_LIMIT*16 */
1377 #define    MAC_TX_CFG_NO_BACKOFF        0x0040  /* modify CSMA/CD to disable
1378                                                    backoff algorithm. TX
1379                                                    MAC will not back off
1380                                                    after a xmission attempt
1381                                                    that resulted in a
1382                                                    collision. */
1383 #define    MAC_TX_CFG_SLOW_DOWN         0x0080  /* modify CSMA/CD so that
1384                                                    deferral process is reset
1385                                                    in response to carrier
1386                                                    sense during the entire
1387                                                    duration of IPG. TX MAC
1388                                                    will only commit to frame
1389                                                    xmission after frame
1390                                                    xmission has actually
1391                                                    begun. */
1392 #define    MAC_TX_CFG_NO_FCS            0x0100  /* TX MAC will not generate
1393                                                    CRC for all xmitted
1394                                                    packets. when clear, CRC
1395                                                    generation is dependent
1396                                                    upon NO_CRC bit in the
1397                                                    xmit control word from
1398                                                    TX DMA */
1399 #define    MAC_TX_CFG_CARRIER_EXTEND    0x0200  /* enables xmit part of the
1400                                                    carrier extension
1401                                                    feature. this allows for
1402                                                    longer collision domains
1403                                                    by extending the carrier
1404                                                    and collision window
1405                                                    from the end of FCS until
1406                                                    the end of the slot time
1407                                                    if necessary. Required
1408                                                    for half-duplex at 1Gbps,
1409                                                    clear otherwise. */
1410 
1411 /* when CRC is not stripped, reassembly packets will not contain the CRC.
1412  * these will be stripped by HRP because it reassembles layer 4 data, and the
1413  * CRC is layer 2. however, non-reassembly packets will still contain the CRC
1414  * when passed to the host. to ensure proper operation, need to wait 3.2ms
1415  * after clearing RX_CFG_EN before writing to any other RX MAC registers
1416  * or other MAC parameters. alternatively, poll RX_CFG_EN until it clears
1417  * to 0. similary, HASH_FILTER_EN and ADDR_FILTER_EN have the same
1418  * restrictions as CFG_EN.
1419  */
1420 #define  REG_MAC_RX_CFG                 0x6034  /* RX MAC config reg */
1421 #define    MAC_RX_CFG_EN                0x0001  /* enable RX MAC */
1422 #define    MAC_RX_CFG_STRIP_PAD         0x0002  /* always program to 0.
1423                                                    feature not supported */
1424 #define    MAC_RX_CFG_STRIP_FCS         0x0004  /* RX MAC will strip the
1425                                                    last 4 bytes of a
1426                                                    received frame. */
1427 #define    MAC_RX_CFG_PROMISC_EN        0x0008  /* promiscuous mode */
1428 #define    MAC_RX_CFG_PROMISC_GROUP_EN  0x0010  /* accept all valid
1429                                                    multicast frames (group
1430                                                    bit in DA field set) */
1431 #define    MAC_RX_CFG_HASH_FILTER_EN    0x0020  /* use hash table to filter
1432                                                    multicast addresses */
1433 #define    MAC_RX_CFG_ADDR_FILTER_EN    0x0040  /* cause RX MAC to use
1434                                                    address filtering regs
1435                                                    to filter both unicast
1436                                                    and multicast
1437                                                    addresses */
1438 #define    MAC_RX_CFG_DISABLE_DISCARD   0x0080  /* pass errored frames to
1439                                                    RX DMA by setting BAD
1440                                                    bit but not Abort bit
1441                                                    in the status. CRC,
1442                                                    framing, and length errs
1443                                                    will not increment
1444                                                    error counters. frames
1445                                                    which don't match dest
1446                                                    addr will be passed up
1447                                                    w/ BAD bit set. */
1448 #define    MAC_RX_CFG_CARRIER_EXTEND    0x0100  /* enable reception of
1449                                                    packet bursts generated
1450                                                    by carrier extension
1451                                                    with packet bursting
1452                                                    senders. only applies
1453                                                    to half-duplex 1Gbps */
1454 
1455 /* DEFAULT: 0x0 */
1456 #define  REG_MAC_CTRL_CFG               0x6038  /* MAC control config reg */
1457 #define    MAC_CTRL_CFG_SEND_PAUSE_EN   0x0001  /* respond to requests for
1458                                                    sending pause flow ctrl
1459                                                    frames */
1460 #define    MAC_CTRL_CFG_RECV_PAUSE_EN   0x0002  /* respond to received
1461                                                    pause flow ctrl frames */
1462 #define    MAC_CTRL_CFG_PASS_CTRL       0x0004  /* pass valid MAC ctrl
1463                                                    packets to RX DMA */
1464 
1465 /* to ensure proper operation, a global initialization sequence should be
1466  * performed when a loopback config is entered or exited. if programmed after
1467  * a hw or global sw reset, RX/TX MAC software reset and initialization
1468  * should be done to ensure stable clocking.
1469  * DEFAULT: 0x0
1470  */
1471 #define  REG_MAC_XIF_CFG                0x603C  /* XIF config reg */
1472 #define    MAC_XIF_TX_MII_OUTPUT_EN        0x0001  /* enable output drivers
1473                                                       on MII xmit bus */
1474 #define    MAC_XIF_MII_INT_LOOPBACK        0x0002  /* loopback GMII xmit data
1475                                                       path to GMII recv data
1476                                                       path. phy mode register
1477                                                       clock selection must be
1478                                                       set to GMII mode and
1479                                                       GMII_MODE should be set
1480                                                       to 1. in loopback mode,
1481                                                       REFCLK will drive the
1482                                                       entire mac core. 0 for
1483                                                       normal operation. */
1484 #define    MAC_XIF_DISABLE_ECHO            0x0004  /* disables receive data
1485                                                       path during packet
1486                                                       xmission. clear to 0
1487                                                       in any full duplex mode,
1488                                                       in any loopback mode,
1489                                                       or in half-duplex SERDES
1490                                                       or SLINK modes. set when
1491                                                       in half-duplex when
1492                                                       using external phy. */
1493 #define    MAC_XIF_GMII_MODE               0x0008  /* MAC operates with GMII
1494                                                       clocks and datapath */
1495 #define    MAC_XIF_MII_BUFFER_OUTPUT_EN    0x0010  /* MII_BUF_EN pin. enable
1496                                                       external tristate buffer
1497                                                       on the MII receive
1498                                                       bus. */
1499 #define    MAC_XIF_LINK_LED                0x0020  /* LINKLED# active (low) */
1500 #define    MAC_XIF_FDPLX_LED               0x0040  /* FDPLXLED# active (low) */
1501 
1502 #define  REG_MAC_IPG0                      0x6040  /* inter-packet gap0 reg.
1503                                                       recommended: 0x00 */
1504 #define  REG_MAC_IPG1                      0x6044  /* inter-packet gap1 reg
1505                                                       recommended: 0x08 */
1506 #define  REG_MAC_IPG2                      0x6048  /* inter-packet gap2 reg
1507                                                       recommended: 0x04 */
1508 #define  REG_MAC_SLOT_TIME                 0x604C  /* slot time reg
1509                                                       recommended: 0x40 */
1510 #define  REG_MAC_FRAMESIZE_MIN             0x6050  /* min frame size reg
1511                                                       recommended: 0x40 */
1512 
1513 /* FRAMESIZE_MAX holds both the max frame size as well as the max burst size.
1514  * recommended value:  0x2000.05EE
1515  */
1516 #define  REG_MAC_FRAMESIZE_MAX             0x6054  /* max frame size reg */
1517 #define    MAC_FRAMESIZE_MAX_BURST_MASK    0x3FFF0000 /* max burst size */
1518 #define    MAC_FRAMESIZE_MAX_BURST_SHIFT   16
1519 #define    MAC_FRAMESIZE_MAX_FRAME_MASK    0x00007FFF /* max frame size */
1520 #define    MAC_FRAMESIZE_MAX_FRAME_SHIFT   0
1521 #define  REG_MAC_PA_SIZE                   0x6058  /* PA size reg. number of
1522                                                       preamble bytes that the
1523                                                       TX MAC will xmit at the
1524                                                       beginning of each frame
1525                                                       value should be 2 or
1526                                                       greater. recommended
1527                                                       value: 0x07 */
1528 #define  REG_MAC_JAM_SIZE                  0x605C  /* jam size reg. duration
1529                                                       of jam in units of media
1530                                                       byte time. recommended
1531                                                       value: 0x04 */
1532 #define  REG_MAC_ATTEMPT_LIMIT             0x6060  /* attempt limit reg. #
1533                                                       of attempts TX MAC will
1534                                                       make to xmit a frame
1535                                                       before it resets its
1536                                                       attempts counter. after
1537                                                       the limit has been
1538                                                       reached, TX MAC may or
1539                                                       may not drop the frame
1540                                                       dependent upon value
1541                                                       in TX_MAC_CFG.
1542                                                       recommended
1543                                                       value: 0x10 */
1544 #define  REG_MAC_CTRL_TYPE                 0x6064  /* MAC control type reg.
1545                                                       type field of a MAC
1546                                                       ctrl frame. recommended
1547                                                       value: 0x8808 */
1548 
1549 /* mac address registers: 0 - 44, 0x6080 - 0x6130, 4 8-bit bytes.
1550  * register           contains                   comparison
1551  *    0        16 MSB of primary MAC addr        [47:32] of DA field
1552  *    1        16 middle bits ""                 [31:16] of DA field
1553  *    2        16 LSB ""                         [15:0] of DA field
1554  *    3*x      16MSB of alt MAC addr 1-15        [47:32] of DA field
1555  *    4*x      16 middle bits ""                 [31:16]
1556  *    5*x      16 LSB ""                         [15:0]
1557  *    42       16 MSB of MAC CTRL addr           [47:32] of DA.
1558  *    43       16 middle bits ""                 [31:16]
1559  *    44       16 LSB ""                         [15:0]
1560  *    MAC CTRL addr must be the reserved multicast addr for MAC CTRL frames.
1561  *    if there is a match, MAC will set the bit for alternative address
1562  *    filter pass [15]
1563 
1564  *    here is the map of registers given MAC address notation: a:b:c:d:e:f
1565  *                     ab             cd             ef
1566  *    primary addr     reg 2          reg 1          reg 0
1567  *    alt addr 1       reg 5          reg 4          reg 3
1568  *    alt addr x       reg 5*x        reg 4*x        reg 3*x
1569  *    ctrl addr        reg 44         reg 43         reg 42
1570  */
1571 #define  REG_MAC_ADDR0                     0x6080  /* MAC address 0 reg */
1572 #define  REG_MAC_ADDRN(x)                  (REG_MAC_ADDR0 + (x)*4)
1573 #define  REG_MAC_ADDR_FILTER0              0x614C  /* address filter 0 reg
1574                                                       [47:32] */
1575 #define  REG_MAC_ADDR_FILTER1              0x6150  /* address filter 1 reg
1576                                                       [31:16] */
1577 #define  REG_MAC_ADDR_FILTER2              0x6154  /* address filter 2 reg
1578                                                       [15:0] */
1579 #define  REG_MAC_ADDR_FILTER2_1_MASK       0x6158  /* address filter 2 and 1
1580                                                       mask reg. 8-bit reg
1581                                                       contains nibble mask for
1582                                                       reg 2 and 1. */
1583 #define  REG_MAC_ADDR_FILTER0_MASK         0x615C  /* address filter 0 mask
1584                                                       reg */
1585 
1586 /* hash table registers: 0 - 15, 0x6160 - 0x619C, 4 8-bit bytes
1587  * 16-bit registers contain bits of the hash table.
1588  * reg x  -> [16*(15 - x) + 15 : 16*(15 - x)].
1589  * e.g., 15 -> [15:0], 0 -> [255:240]
1590  */
1591 #define  REG_MAC_HASH_TABLE0               0x6160  /* hash table 0 reg */
1592 #define  REG_MAC_HASH_TABLEN(x)            (REG_MAC_HASH_TABLE0 + (x)*4)
1593 
1594 /* statistics registers. these registers generate an interrupt on
1595  * overflow. recommended initialization: 0x0000. most are 16-bits except
1596  * for PEAK_ATTEMPTS register which is 8 bits.
1597  */
1598 #define  REG_MAC_COLL_NORMAL               0x61A0 /* normal collision
1599                                                      counter. */
1600 #define  REG_MAC_COLL_FIRST                0x61A4 /* first attempt
1601                                                      successful collision
1602                                                      counter */
1603 #define  REG_MAC_COLL_EXCESS               0x61A8 /* excessive collision
1604                                                      counter */
1605 #define  REG_MAC_COLL_LATE                 0x61AC /* late collision counter */
1606 #define  REG_MAC_TIMER_DEFER               0x61B0 /* defer timer. time base
1607                                                      is the media byte
1608                                                      clock/256 */
1609 #define  REG_MAC_ATTEMPTS_PEAK             0x61B4 /* peak attempts reg */
1610 #define  REG_MAC_RECV_FRAME                0x61B8 /* receive frame counter */
1611 #define  REG_MAC_LEN_ERR                   0x61BC /* length error counter */
1612 #define  REG_MAC_ALIGN_ERR                 0x61C0 /* alignment error counter */
1613 #define  REG_MAC_FCS_ERR                   0x61C4 /* FCS error counter */
1614 #define  REG_MAC_RX_CODE_ERR               0x61C8 /* RX code violation
1615                                                      error counter */
1616 
1617 /* misc registers */
1618 #define  REG_MAC_RANDOM_SEED               0x61CC /* random number seed reg.
1619                                                    10-bit register used as a
1620                                                    seed  for the random number
1621                                                    generator for the CSMA/CD
1622                                                    backoff algorithm. only
1623                                                    programmed after power-on
1624                                                    reset and should be a
1625                                                    random value which has a
1626                                                    high likelihood of being
1627                                                    unique for each MAC
1628                                                    attached to a network
1629                                                    segment (e.g., 10 LSB of
1630                                                    MAC address) */
1631 
1632 /* ASUN: there's a PAUSE_TIMER (ro) described, but it's not in the address
1633  *       map
1634  */
1635 
1636 /* 27-bit register has the current state for key state machines in the MAC */
1637 #define  REG_MAC_STATE_MACHINE             0x61D0 /* (ro) state machine reg */
1638 #define    MAC_SM_RLM_MASK                 0x07800000
1639 #define    MAC_SM_RLM_SHIFT                23
1640 #define    MAC_SM_RX_FC_MASK               0x00700000
1641 #define    MAC_SM_RX_FC_SHIFT              20
1642 #define    MAC_SM_TLM_MASK                 0x000F0000
1643 #define    MAC_SM_TLM_SHIFT                16
1644 #define    MAC_SM_ENCAP_SM_MASK            0x0000F000
1645 #define    MAC_SM_ENCAP_SM_SHIFT           12
1646 #define    MAC_SM_TX_REQ_MASK              0x00000C00
1647 #define    MAC_SM_TX_REQ_SHIFT             10
1648 #define    MAC_SM_TX_FC_MASK               0x000003C0
1649 #define    MAC_SM_TX_FC_SHIFT              6
1650 #define    MAC_SM_FIFO_WRITE_SEL_MASK      0x00000038
1651 #define    MAC_SM_FIFO_WRITE_SEL_SHIFT     3
1652 #define    MAC_SM_TX_FIFO_EMPTY_MASK       0x00000007
1653 #define    MAC_SM_TX_FIFO_EMPTY_SHIFT      0
1654 
1655 /** MIF registers. the MIF can be programmed in either bit-bang or
1656  *  frame mode.
1657  **/
1658 #define  REG_MIF_BIT_BANG_CLOCK            0x6200 /* MIF bit-bang clock.
1659                                                    1 -> 0 will generate a
1660                                                    rising edge. 0 -> 1 will
1661                                                    generate a falling edge. */
1662 #define  REG_MIF_BIT_BANG_DATA             0x6204 /* MIF bit-bang data. 1-bit
1663                                                      register generates data */
1664 #define  REG_MIF_BIT_BANG_OUTPUT_EN        0x6208 /* MIF bit-bang output
1665                                                      enable. enable when
1666                                                      xmitting data from MIF to
1667                                                      transceiver. */
1668 
1669 /* 32-bit register serves as an instruction register when the MIF is
1670  * programmed in frame mode. load this register w/ a valid instruction
1671  * (as per IEEE 802.3u MII spec). poll this register to check for instruction
1672  * execution completion. during a read operation, this register will also
1673  * contain the 16-bit data returned by the tranceiver. unless specified
1674  * otherwise, fields are considered "don't care" when polling for
1675  * completion.
1676  */
1677 #define  REG_MIF_FRAME                     0x620C /* MIF frame/output reg */
1678 #define    MIF_FRAME_START_MASK            0xC0000000 /* start of frame.
1679                                                          load w/ 01 when
1680                                                          issuing an instr */
1681 #define    MIF_FRAME_ST                    0x40000000 /* STart of frame */
1682 #define    MIF_FRAME_OPCODE_MASK           0x30000000 /* opcode. 01 for a
1683                                                          write. 10 for a
1684                                                          read */
1685 #define    MIF_FRAME_OP_READ               0x20000000 /* read OPcode */
1686 #define    MIF_FRAME_OP_WRITE              0x10000000 /* write OPcode */
1687 #define    MIF_FRAME_PHY_ADDR_MASK         0x0F800000 /* phy address. when
1688                                                          issuing an instr,
1689                                                          this field should be
1690                                                          loaded w/ the XCVR
1691                                                          addr */
1692 #define    MIF_FRAME_PHY_ADDR_SHIFT        23
1693 #define    MIF_FRAME_REG_ADDR_MASK         0x007C0000 /* register address.
1694                                                          when issuing an instr,
1695                                                          addr of register
1696                                                          to be read/written */
1697 #define    MIF_FRAME_REG_ADDR_SHIFT        18
1698 #define    MIF_FRAME_TURN_AROUND_MSB       0x00020000 /* turn around, MSB.
1699                                                          when issuing an instr,
1700                                                          set this bit to 1 */
1701 #define    MIF_FRAME_TURN_AROUND_LSB       0x00010000 /* turn around, LSB.
1702                                                          when issuing an instr,
1703                                                          set this bit to 0.
1704                                                          when polling for
1705                                                          completion, 1 means
1706                                                          that instr execution
1707                                                          has been completed */
1708 #define    MIF_FRAME_DATA_MASK             0x0000FFFF /* instruction payload
1709                                                          load with 16-bit data
1710                                                          to be written in
1711                                                          transceiver reg for a
1712                                                          write. doesn't matter
1713                                                          in a read. when
1714                                                          polling for
1715                                                          completion, field is
1716                                                          "don't care" for write
1717                                                          and 16-bit data
1718                                                          returned by the
1719                                                          transceiver for a
1720                                                          read (if valid bit
1721                                                          is set) */
1722 #define  REG_MIF_CFG                    0x6210 /* MIF config reg */
1723 #define    MIF_CFG_PHY_SELECT           0x0001 /* 1 -> select MDIO_1
1724                                                   0 -> select MDIO_0 */
1725 #define    MIF_CFG_POLL_EN              0x0002 /* enable polling
1726                                                   mechanism. if set,
1727                                                   BB_MODE should be 0 */
1728 #define    MIF_CFG_BB_MODE              0x0004 /* 1 -> bit-bang mode
1729                                                   0 -> frame mode */
1730 #define    MIF_CFG_POLL_REG_MASK        0x00F8 /* register address to be
1731                                                   used by polling mode.
1732                                                   only meaningful if POLL_EN
1733                                                   is set to 1 */
1734 #define    MIF_CFG_POLL_REG_SHIFT       3
1735 #define    MIF_CFG_MDIO_0               0x0100 /* (ro) dual purpose.
1736                                                   when MDIO_0 is idle,
1737                                                   1 -> tranceiver is
1738                                                   connected to MDIO_0.
1739                                                   when MIF is communicating
1740                                                   w/ MDIO_0 in bit-bang
1741                                                   mode, this bit indicates
1742                                                   the incoming bit stream
1743                                                   during a read op */
1744 #define    MIF_CFG_MDIO_1               0x0200 /* (ro) dual purpose.
1745                                                   when MDIO_1 is idle,
1746                                                   1 -> transceiver is
1747                                                   connected to MDIO_1.
1748                                                   when MIF is communicating
1749                                                   w/ MDIO_1 in bit-bang
1750                                                   mode, this bit indicates
1751                                                   the incoming bit stream
1752                                                   during a read op */
1753 #define    MIF_CFG_POLL_PHY_MASK        0x7C00 /* tranceiver address to
1754                                                   be polled */
1755 #define    MIF_CFG_POLL_PHY_SHIFT       10
1756 
1757 /* 16-bit register used to determine which bits in the POLL_STATUS portion of
1758  * the MIF_STATUS register will cause an interrupt. if a mask bit is 0,
1759  * corresponding bit of the POLL_STATUS will generate a MIF interrupt when
1760  * set. DEFAULT: 0xFFFF
1761  */
1762 #define  REG_MIF_MASK                      0x6214 /* MIF mask reg */
1763 
1764 /* 32-bit register used when in poll mode. auto-cleared after being read */
1765 #define  REG_MIF_STATUS                    0x6218 /* MIF status reg */
1766 #define    MIF_STATUS_POLL_DATA_MASK       0xFFFF0000 /* poll data contains
1767                                                          the "latest image"
1768                                                          update of the XCVR
1769                                                          reg being read */
1770 #define    MIF_STATUS_POLL_DATA_SHIFT      16
1771 #define    MIF_STATUS_POLL_STATUS_MASK     0x0000FFFF /* poll status indicates
1772                                                          which bits in the
1773                                                          POLL_DATA field have
1774                                                          changed since the
1775                                                          MIF_STATUS reg was
1776                                                          last read */
1777 #define    MIF_STATUS_POLL_STATUS_SHIFT    0
1778 
1779 /* 7-bit register has current state for all state machines in the MIF */
1780 #define  REG_MIF_STATE_MACHINE             0x621C /* MIF state machine reg */
1781 #define    MIF_SM_CONTROL_MASK             0x07   /* control state machine
1782                                                      state */
1783 #define    MIF_SM_EXECUTION_MASK           0x60   /* execution state machine
1784                                                      state */
1785 
1786 /** PCS/Serialink. the following registers are equivalent to the standard
1787  *  MII management registers except that they're directly mapped in
1788  *  Cassini's register space.
1789  **/
1790 
1791 /* the auto-negotiation enable bit should be programmed the same at
1792  * the link partner as in the local device to enable auto-negotiation to
1793  * complete. when that bit is reprogrammed, auto-neg/manual config is
1794  * restarted automatically.
1795  * DEFAULT: 0x1040
1796  */
1797 #define  REG_PCS_MII_CTRL                  0x9000 /* PCS MII control reg */
1798 #define    PCS_MII_CTRL_1000_SEL           0x0040 /* reads 1. ignored on
1799                                                      writes */
1800 #define    PCS_MII_CTRL_COLLISION_TEST     0x0080 /* COL signal at the PCS
1801                                                      to MAC interface is
1802                                                      activated regardless
1803                                                      of activity */
1804 #define    PCS_MII_CTRL_DUPLEX             0x0100 /* forced 0x0. PCS
1805                                                      behaviour same for
1806                                                      half and full dplx */
1807 #define    PCS_MII_RESTART_AUTONEG         0x0200 /* self clearing.
1808                                                      restart auto-
1809                                                      negotiation */
1810 #define    PCS_MII_ISOLATE                 0x0400 /* read as 0. ignored
1811                                                      on writes */
1812 #define    PCS_MII_POWER_DOWN              0x0800 /* read as 0. ignored
1813                                                      on writes */
1814 #define    PCS_MII_AUTONEG_EN              0x1000 /* default 1. PCS goes
1815                                                      through automatic
1816                                                      link config before it
1817                                                      can be used. when 0,
1818                                                      link can be used
1819                                                      w/out any link config
1820                                                      phase */
1821 #define    PCS_MII_10_100_SEL              0x2000 /* read as 0. ignored on
1822                                                      writes */
1823 #define    PCS_MII_RESET                   0x8000 /* reset PCS. self-clears
1824                                                      when done */
1825 
1826 /* DEFAULT: 0x0108 */
1827 #define  REG_PCS_MII_STATUS                0x9004 /* PCS MII status reg */
1828 #define    PCS_MII_STATUS_EXTEND_CAP       0x0001 /* reads 0 */
1829 #define    PCS_MII_STATUS_JABBER_DETECT    0x0002 /* reads 0 */
1830 #define    PCS_MII_STATUS_LINK_STATUS      0x0004 /* 1 -> link up.
1831                                                      0 -> link down. 0 is
1832                                                      latched so that 0 is
1833                                                      kept until read. read
1834                                                      2x to determine if the
1835                                                      link has gone up again */
1836 #define    PCS_MII_STATUS_AUTONEG_ABLE     0x0008 /* reads 1 (able to perform
1837                                                      auto-neg) */
1838 #define    PCS_MII_STATUS_REMOTE_FAULT     0x0010 /* 1 -> remote fault detected
1839                                                      from received link code
1840                                                      word. only valid after
1841                                                      auto-neg completed */
1842 #define    PCS_MII_STATUS_AUTONEG_COMP     0x0020 /* 1 -> auto-negotiation
1843                                                           completed
1844                                                      0 -> auto-negotiation not
1845                                                      completed */
1846 #define    PCS_MII_STATUS_EXTEND_STATUS    0x0100 /* reads as 1. used as an
1847                                                      indication that this is
1848                                                      a 1000 Base-X PHY. writes
1849                                                      to it are ignored */
1850 
1851 /* used during auto-negotiation.
1852  * DEFAULT: 0x00E0
1853  */
1854 #define  REG_PCS_MII_ADVERT                0x9008 /* PCS MII advertisement
1855                                                      reg */
1856 #define    PCS_MII_ADVERT_FD               0x0020  /* advertise full duplex
1857                                                       1000 Base-X */
1858 #define    PCS_MII_ADVERT_HD               0x0040  /* advertise half-duplex
1859                                                       1000 Base-X */
1860 #define    PCS_MII_ADVERT_SYM_PAUSE        0x0080  /* advertise PAUSE
1861                                                       symmetric capability */
1862 #define    PCS_MII_ADVERT_ASYM_PAUSE       0x0100  /* advertises PAUSE
1863                                                       asymmetric capability */
1864 #define    PCS_MII_ADVERT_RF_MASK          0x3000 /* remote fault. write bit13
1865                                                      to optionally indicate to
1866                                                      link partner that chip is
1867                                                      going off-line. bit12 will
1868                                                      get set when signal
1869                                                      detect == FAIL and will
1870                                                      remain set until
1871                                                      successful negotiation */
1872 #define    PCS_MII_ADVERT_ACK              0x4000 /* (ro) */
1873 #define    PCS_MII_ADVERT_NEXT_PAGE        0x8000 /* (ro) forced 0x0 */
1874 
1875 /* contents updated as a result of autonegotiation. layout and definitions
1876  * identical to PCS_MII_ADVERT
1877  */
1878 #define  REG_PCS_MII_LPA                   0x900C /* PCS MII link partner
1879                                                      ability reg */
1880 #define    PCS_MII_LPA_FD             PCS_MII_ADVERT_FD
1881 #define    PCS_MII_LPA_HD             PCS_MII_ADVERT_HD
1882 #define    PCS_MII_LPA_SYM_PAUSE      PCS_MII_ADVERT_SYM_PAUSE
1883 #define    PCS_MII_LPA_ASYM_PAUSE     PCS_MII_ADVERT_ASYM_PAUSE
1884 #define    PCS_MII_LPA_RF_MASK        PCS_MII_ADVERT_RF_MASK
1885 #define    PCS_MII_LPA_ACK            PCS_MII_ADVERT_ACK
1886 #define    PCS_MII_LPA_NEXT_PAGE      PCS_MII_ADVERT_NEXT_PAGE
1887 
1888 /* DEFAULT: 0x0 */
1889 #define  REG_PCS_CFG                       0x9010 /* PCS config reg */
1890 #define    PCS_CFG_EN                      0x01   /* enable PCS. must be
1891                                                      0 when modifying
1892                                                      PCS_MII_ADVERT */
1893 #define    PCS_CFG_SD_OVERRIDE             0x02   /* sets signal detect to
1894                                                      OK. bit is
1895                                                      non-resettable */
1896 #define    PCS_CFG_SD_ACTIVE_LOW           0x04   /* changes interpretation
1897                                                      of optical signal to make
1898                                                      signal detect okay when
1899                                                      signal is low */
1900 #define    PCS_CFG_JITTER_STUDY_MASK       0x18   /* used to make jitter
1901                                                      measurements. a single
1902                                                      code group is xmitted
1903                                                      regularly.
1904                                                      0x0 = normal operation
1905                                                      0x1 = high freq test
1906                                                            pattern, D21.5
1907                                                      0x2 = low freq test
1908                                                            pattern, K28.7
1909                                                      0x3 = reserved */
1910 #define    PCS_CFG_10MS_TIMER_OVERRIDE     0x20   /* shortens 10-20ms auto-
1911                                                      negotiation timer to
1912                                                      a few cycles for test
1913                                                      purposes */
1914 
1915 /* used for diagnostic purposes. bits 20-22 autoclear on read */
1916 #define  REG_PCS_STATE_MACHINE             0x9014 /* (ro) PCS state machine
1917                                                      and diagnostic reg */
1918 #define    PCS_SM_TX_STATE_MASK            0x0000000F /* 0 and 1 indicate
1919                                                          xmission of idle.
1920                                                          otherwise, xmission of
1921                                                          a packet */
1922 #define    PCS_SM_RX_STATE_MASK            0x000000F0 /* 0 indicates reception
1923                                                          of idle. otherwise,
1924                                                          reception of packet */
1925 #define    PCS_SM_WORD_SYNC_STATE_MASK     0x00000700 /* 0 indicates loss of
1926                                                          sync */
1927 #define    PCS_SM_SEQ_DETECT_STATE_MASK    0x00001800 /* cycling through 0-3
1928                                                          indicates reception of
1929                                                          Config codes. cycling
1930                                                          through 0-1 indicates
1931                                                          reception of idles */
1932 #define    PCS_SM_LINK_STATE_MASK          0x0001E000
1933 #define        SM_LINK_STATE_UP            0x00016000 /* link state is up */
1934 
1935 #define    PCS_SM_LOSS_LINK_C              0x00100000 /* loss of link due to
1936                                                          recept of Config
1937                                                          codes */
1938 #define    PCS_SM_LOSS_LINK_SYNC           0x00200000 /* loss of link due to
1939                                                          loss of sync */
1940 #define    PCS_SM_LOSS_SIGNAL_DETECT       0x00400000 /* signal detect goes
1941                                                          from OK to FAIL. bit29
1942                                                          will also be set if
1943                                                          this is set */
1944 #define    PCS_SM_NO_LINK_BREAKLINK        0x01000000 /* link not up due to
1945                                                         receipt of breaklink
1946                                                         C codes from partner.
1947                                                         C codes w/ 0 content
1948                                                         received triggering
1949                                                         start/restart of
1950                                                         autonegotiation.
1951                                                         should be sent for
1952                                                         no longer than 20ms */
1953 #define    PCS_SM_NO_LINK_SERDES           0x02000000 /* serdes being
1954                                                         initialized. see serdes
1955                                                         state reg */
1956 #define    PCS_SM_NO_LINK_C                0x04000000 /* C codes not stable or
1957                                                          not received */
1958 #define    PCS_SM_NO_LINK_SYNC             0x08000000 /* word sync not
1959                                                          achieved */
1960 #define    PCS_SM_NO_LINK_WAIT_C           0x10000000 /* waiting for C codes
1961                                                          w/ ack bit set */
1962 #define    PCS_SM_NO_LINK_NO_IDLE          0x20000000 /* link partner continues
1963                                                          to send C codes
1964                                                          instead of idle
1965                                                          symbols or pkt data */
1966 
1967 /* this register indicates interrupt changes in specific PCS MII status bits.
1968  * PCS_INT may be masked at the ISR level. only a single bit is implemented
1969  * for link status change.
1970  */
1971 #define  REG_PCS_INTR_STATUS               0x9018 /* PCS interrupt status */
1972 #define    PCS_INTR_STATUS_LINK_CHANGE     0x04   /* link status has changed
1973                                                      since last read */
1974 
1975 /* control which network interface is used. no more than one bit should
1976  * be set.
1977  * DEFAULT: none
1978  */
1979 #define  REG_PCS_DATAPATH_MODE             0x9050 /* datapath mode reg */
1980 #define    PCS_DATAPATH_MODE_MII           0x00 /* PCS is not used and
1981                                                    MII/GMII is selected.
1982                                                    selection between MII and
1983                                                    GMII is controlled by
1984                                                    XIF_CFG */
1985 #define    PCS_DATAPATH_MODE_SERDES        0x02 /* PCS is used via the
1986                                                    10-bit interface */
1987 
1988 /* input to serdes chip or serialink block */
1989 #define  REG_PCS_SERDES_CTRL              0x9054 /* serdes control reg */
1990 #define    PCS_SERDES_CTRL_LOOPBACK       0x01   /* enable loopback on
1991                                                     serdes interface */
1992 #define    PCS_SERDES_CTRL_SYNCD_EN       0x02   /* enable sync carrier
1993                                                     detection. should be
1994                                                     0x0 for normal
1995                                                     operation */
1996 #define    PCS_SERDES_CTRL_LOCKREF       0x04   /* frequency-lock RBC[0:1]
1997                                                    to REFCLK when set.
1998                                                    when clear, receiver
1999                                                    clock locks to incoming
2000                                                    serial data */
2001 
2002 /* multiplex test outputs into the PROM address (PA_3 through PA_0) pins.
2003  * should be 0x0 for normal operations.
2004  * 0b000          normal operation, PROM address[3:0] selected
2005  * 0b001          rxdma req, rxdma ack, rxdma ready, rxdma read
2006  * 0b010          rxmac req, rx ack, rx tag, rx clk shared
2007  * 0b011          txmac req, tx ack, tx tag, tx retry req
2008  * 0b100          tx tp3, tx tp2, tx tp1, tx tp0
2009  * 0b101          R period RX, R period TX, R period HP, R period BIM
2010  * DEFAULT: 0x0
2011  */
2012 #define  REG_PCS_SHARED_OUTPUT_SEL         0x9058 /* shared output select */
2013 #define    PCS_SOS_PROM_ADDR_MASK          0x0007
2014 
2015 /* used for diagnostics. this register indicates progress of the SERDES
2016  * boot up.
2017  * 0b00       undergoing reset
2018  * 0b01       waiting 500us while lockrefn is asserted
2019  * 0b10       waiting for comma detect
2020  * 0b11       receive data is synchronized
2021  * DEFAULT: 0x0
2022  */
2023 #define  REG_PCS_SERDES_STATE              0x905C /* (ro) serdes state */
2024 #define    PCS_SERDES_STATE_MASK           0x03
2025 
2026 /* used for diagnostics. indicates number of packets transmitted or received.
2027  * counters rollover w/out generating an interrupt.
2028  * DEFAULT: 0x0
2029  */
2030 #define  REG_PCS_PACKET_COUNT              0x9060 /* (ro) PCS packet counter */
2031 #define    PCS_PACKET_COUNT_TX             0x000007FF /* pkts xmitted by PCS */
2032 #define    PCS_PACKET_COUNT_RX             0x07FF0000 /* pkts recvd by PCS
2033                                                          whether they
2034                                                          encountered an error
2035                                                          or not */
2036 
2037 /** LocalBus Devices. the following provides run-time access to the
2038  *  Cassini's PROM
2039  ***/
2040 #define  REG_EXPANSION_ROM_RUN_START       0x100000 /* expansion rom run time
2041                                                        access */
2042 #define  REG_EXPANSION_ROM_RUN_END         0x17FFFF
2043 
2044 #define  REG_SECOND_LOCALBUS_START         0x180000 /* secondary local bus
2045                                                        device */
2046 #define  REG_SECOND_LOCALBUS_END           0x1FFFFF
2047 
2048 /* entropy device */
2049 #define  REG_ENTROPY_START                 REG_SECOND_LOCALBUS_START
2050 #define  REG_ENTROPY_DATA                  (REG_ENTROPY_START + 0x00)
2051 #define  REG_ENTROPY_STATUS                (REG_ENTROPY_START + 0x04)
2052 #define      ENTROPY_STATUS_DRDY           0x01
2053 #define      ENTROPY_STATUS_BUSY           0x02
2054 #define      ENTROPY_STATUS_CIPHER         0x04
2055 #define      ENTROPY_STATUS_BYPASS_MASK    0x18
2056 #define  REG_ENTROPY_MODE                  (REG_ENTROPY_START + 0x05)
2057 #define      ENTROPY_MODE_KEY_MASK         0x07
2058 #define      ENTROPY_MODE_ENCRYPT          0x40
2059 #define  REG_ENTROPY_RAND_REG              (REG_ENTROPY_START + 0x06)
2060 #define  REG_ENTROPY_RESET                 (REG_ENTROPY_START + 0x07)
2061 #define      ENTROPY_RESET_DES_IO          0x01
2062 #define      ENTROPY_RESET_STC_MODE        0x02
2063 #define      ENTROPY_RESET_KEY_CACHE       0x04
2064 #define      ENTROPY_RESET_IV              0x08
2065 #define  REG_ENTROPY_IV                    (REG_ENTROPY_START + 0x08)
2066 #define  REG_ENTROPY_KEY0                  (REG_ENTROPY_START + 0x10)
2067 #define  REG_ENTROPY_KEYN(x)               (REG_ENTROPY_KEY0 + 4*(x))
2068 
2069 /* phys of interest w/ their special mii registers */
2070 #define PHY_LUCENT_B0     0x00437421
2071 #define   LUCENT_MII_REG      0x1F
2072 
2073 #define PHY_NS_DP83065    0x20005c78
2074 #define   DP83065_MII_MEM     0x16
2075 #define   DP83065_MII_REGD    0x1D
2076 #define   DP83065_MII_REGE    0x1E
2077 
2078 #define PHY_BROADCOM_5411 0x00206071
2079 #define PHY_BROADCOM_B0   0x00206050
2080 #define   BROADCOM_MII_REG4   0x14
2081 #define   BROADCOM_MII_REG5   0x15
2082 #define   BROADCOM_MII_REG7   0x17
2083 #define   BROADCOM_MII_REG8   0x18
2084 
2085 #define   CAS_MII_ANNPTR          0x07
2086 #define   CAS_MII_ANNPRR          0x08
2087 #define   CAS_MII_1000_CTRL       0x09
2088 #define   CAS_MII_1000_STATUS     0x0A
2089 #define   CAS_MII_1000_EXTEND     0x0F
2090 
2091 #define   CAS_BMSR_1000_EXTEND    0x0100 /* supports 1000Base-T extended status */
2092 /*
2093  * if autoneg is disabled, here's the table:
2094  * BMCR_SPEED100 = 100Mbps
2095  * BMCR_SPEED1000 = 1000Mbps
2096  * ~(BMCR_SPEED100 | BMCR_SPEED1000) = 10Mbps
2097  */
2098 #define   CAS_BMCR_SPEED1000      0x0040  /* Select 1000Mbps */
2099 
2100 #define   CAS_ADVERTISE_1000HALF   0x0100
2101 #define   CAS_ADVERTISE_1000FULL   0x0200
2102 #define   CAS_ADVERTISE_PAUSE      0x0400
2103 #define   CAS_ADVERTISE_ASYM_PAUSE 0x0800
2104 
2105 /* regular lpa register */
2106 #define   CAS_LPA_PAUSE            CAS_ADVERTISE_PAUSE
2107 #define   CAS_LPA_ASYM_PAUSE       CAS_ADVERTISE_ASYM_PAUSE
2108 
2109 /* 1000_STATUS register */
2110 #define   CAS_LPA_1000HALF        0x0400
2111 #define   CAS_LPA_1000FULL        0x0800
2112 
2113 #define   CAS_EXTEND_1000XFULL    0x8000
2114 #define   CAS_EXTEND_1000XHALF    0x4000
2115 #define   CAS_EXTEND_1000TFULL    0x2000
2116 #define   CAS_EXTEND_1000THALF    0x1000
2117 
2118 /* cassini header parser firmware */
2119 typedef struct cas_hp_inst {
2120         const char *note;
2121 
2122         u16 mask, val;
2123 
2124         u8 op;
2125         u8 soff, snext; /* if match succeeds, new offset and match */
2126         u8 foff, fnext; /* if match fails, new offset and match */
2127         /* output info */
2128         u8 outop;    /* output opcode */
2129 
2130         u16 outarg;  /* output argument */
2131         u8 outenab;  /* output enable: 0 = not, 1 = if match
2132                          2 = if !match, 3 = always */
2133         u8 outshift; /* barrel shift right, 4 bits */
2134         u16 outmask;
2135 } cas_hp_inst_t;
2136 
2137 /* comparison */
2138 #define OP_EQ     0 /* packet == value */
2139 #define OP_LT     1 /* packet < value */
2140 #define OP_GT     2 /* packet > value */
2141 #define OP_NP     3 /* new packet */
2142 
2143 /* output opcodes */
2144 #define CL_REG  0
2145 #define LD_FID  1
2146 #define LD_SEQ  2
2147 #define LD_CTL  3
2148 #define LD_SAP  4
2149 #define LD_R1   5
2150 #define LD_L3   6
2151 #define LD_SUM  7
2152 #define LD_HDR  8
2153 #define IM_FID  9
2154 #define IM_SEQ  10
2155 #define IM_SAP  11
2156 #define IM_R1   12
2157 #define IM_CTL  13
2158 #define LD_LEN  14
2159 #define ST_FLG  15
2160 
2161 /* match setp #s for IP4TCP4 */
2162 #define S1_PCKT         0
2163 #define S1_VLAN         1
2164 #define S1_CFI          2
2165 #define S1_8023         3
2166 #define S1_LLC          4
2167 #define S1_LLCc         5
2168 #define S1_IPV4         6
2169 #define S1_IPV4c        7
2170 #define S1_IPV4F        8
2171 #define S1_TCP44        9
2172 #define S1_IPV6         10
2173 #define S1_IPV6L        11
2174 #define S1_IPV6c        12
2175 #define S1_TCP64        13
2176 #define S1_TCPSQ        14
2177 #define S1_TCPFG        15
2178 #define S1_TCPHL        16
2179 #define S1_TCPHc        17
2180 #define S1_CLNP         18
2181 #define S1_CLNP2        19
2182 #define S1_DROP         20
2183 #define S2_HTTP         21
2184 #define S1_ESP4         22
2185 #define S1_AH4          23
2186 #define S1_ESP6         24
2187 #define S1_AH6          25
2188 
2189 #define CAS_PROG_IP46TCP4_PREAMBLE \
2190 { "packet arrival?", 0xffff, 0x0000, OP_NP,  6, S1_VLAN,  0, S1_PCKT,  \
2191   CL_REG, 0x3ff, 1, 0x0, 0x0000}, \
2192 { "VLAN?", 0xffff, 0x8100, OP_EQ,  1, S1_CFI,   0, S1_8023,  \
2193   IM_CTL, 0x00a,  3, 0x0, 0xffff}, \
2194 { "CFI?", 0x1000, 0x1000, OP_EQ,  0, S1_DROP,  1, S1_8023, \
2195   CL_REG, 0x000,  0, 0x0, 0x0000}, \
2196 { "8023?", 0xffff, 0x0600, OP_LT,  1, S1_LLC,   0, S1_IPV4, \
2197   CL_REG, 0x000,  0, 0x0, 0x0000}, \
2198 { "LLC?", 0xffff, 0xaaaa, OP_EQ,  1, S1_LLCc,  0, S1_CLNP, \
2199   CL_REG, 0x000,  0, 0x0, 0x0000}, \
2200 { "LLCc?", 0xff00, 0x0300, OP_EQ,  2, S1_IPV4,  0, S1_CLNP, \
2201   CL_REG, 0x000,  0, 0x0, 0x0000}, \
2202 { "IPV4?", 0xffff, 0x0800, OP_EQ,  1, S1_IPV4c, 0, S1_IPV6, \
2203   LD_SAP, 0x100,  3, 0x0, 0xffff}, \
2204 { "IPV4 cont?", 0xff00, 0x4500, OP_EQ,  3, S1_IPV4F, 0, S1_CLNP, \
2205   LD_SUM, 0x00a,  1, 0x0, 0x0000}, \
2206 { "IPV4 frag?", 0x3fff, 0x0000, OP_EQ,  1, S1_TCP44, 0, S1_CLNP, \
2207   LD_LEN, 0x03e,  1, 0x0, 0xffff}, \
2208 { "TCP44?", 0x00ff, 0x0006, OP_EQ,  7, S1_TCPSQ, 0, S1_CLNP, \
2209   LD_FID, 0x182,  1, 0x0, 0xffff}, /* FID IP4&TCP src+dst */ \
2210 { "IPV6?", 0xffff, 0x86dd, OP_EQ,  1, S1_IPV6L, 0, S1_CLNP,  \
2211   LD_SUM, 0x015,  1, 0x0, 0x0000}, \
2212 { "IPV6 len", 0xf000, 0x6000, OP_EQ,  0, S1_IPV6c, 0, S1_CLNP, \
2213   IM_R1,  0x128,  1, 0x0, 0xffff}, \
2214 { "IPV6 cont?", 0x0000, 0x0000, OP_EQ,  3, S1_TCP64, 0, S1_CLNP, \
2215   LD_FID, 0x484,  1, 0x0, 0xffff}, /* FID IP6&TCP src+dst */ \
2216 { "TCP64?", 0xff00, 0x0600, OP_EQ, 18, S1_TCPSQ, 0, S1_CLNP, \
2217   LD_LEN, 0x03f,  1, 0x0, 0xffff}
2218 
2219 #ifdef USE_HP_IP46TCP4
2220 static cas_hp_inst_t cas_prog_ip46tcp4tab[] = {
2221         CAS_PROG_IP46TCP4_PREAMBLE,
2222         { "TCP seq", /* DADDR should point to dest port */
2223           0x0000, 0x0000, OP_EQ, 0, S1_TCPFG, 4, S1_TCPFG, LD_SEQ,
2224           0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
2225         { "TCP control flags", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHL, 0,
2226           S1_TCPHL, ST_FLG, 0x045,  3, 0x0, 0x002f}, /* Load TCP flags */
2227         { "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0,
2228           S1_TCPHc, LD_R1,  0x205,  3, 0xB, 0xf000},
2229         { "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
2230           S1_PCKT,  LD_HDR, 0x0ff,  3, 0x0, 0xffff},
2231         { "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_CLNP2,  0, S1_CLNP2,
2232           IM_CTL, 0x001,  3, 0x0, 0x0001},
2233         { "Cleanup 2", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2234           IM_CTL, 0x000,  0, 0x0, 0x0000},
2235         { "Drop packet", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2236           IM_CTL, 0x080,  3, 0x0, 0xffff},
2237         { NULL },
2238 };
2239 #ifdef HP_IP46TCP4_DEFAULT
2240 #define CAS_HP_FIRMWARE               cas_prog_ip46tcp4tab
2241 #endif
2242 #endif
2243 
2244 /*
2245  * Alternate table load which excludes HTTP server traffic from reassembly.
2246  * It is substantially similar to the basic table, with one extra state
2247  * and a few extra compares. */
2248 #ifdef USE_HP_IP46TCP4NOHTTP
2249 static cas_hp_inst_t cas_prog_ip46tcp4nohttptab[] = {
2250         CAS_PROG_IP46TCP4_PREAMBLE,
2251         { "TCP seq", /* DADDR should point to dest port */
2252           0xFFFF, 0x0080, OP_EQ,  0, S2_HTTP,  0, S1_TCPFG, LD_SEQ,
2253           0x081,  3, 0x0, 0xffff} , /* Load TCP seq # */
2254         { "TCP control flags", 0xFFFF, 0x8080, OP_EQ,  0, S2_HTTP,  0,
2255           S1_TCPHL, ST_FLG, 0x145,  2, 0x0, 0x002f, }, /* Load TCP flags */
2256         { "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0, S1_TCPHc,
2257           LD_R1,  0x205,  3, 0xB, 0xf000},
2258         { "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2259           LD_HDR, 0x0ff,  3, 0x0, 0xffff},
2260         { "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_CLNP2,  0, S1_CLNP2,
2261           IM_CTL, 0x001,  3, 0x0, 0x0001},
2262         { "Cleanup 2", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2263           CL_REG, 0x002,  3, 0x0, 0x0000},
2264         { "Drop packet", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2265           IM_CTL, 0x080,  3, 0x0, 0xffff},
2266         { "No HTTP", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2267           IM_CTL, 0x044,  3, 0x0, 0xffff},
2268         { NULL },
2269 };
2270 #ifdef HP_IP46TCP4NOHTTP_DEFAULT
2271 #define CAS_HP_FIRMWARE               cas_prog_ip46tcp4nohttptab
2272 #endif
2273 #endif
2274 
2275 /* match step #s for IP4FRAG */
2276 #define S3_IPV6c        11
2277 #define S3_TCP64        12
2278 #define S3_TCPSQ        13
2279 #define S3_TCPFG        14
2280 #define S3_TCPHL        15
2281 #define S3_TCPHc        16
2282 #define S3_FRAG         17
2283 #define S3_FOFF         18
2284 #define S3_CLNP         19
2285 
2286 #ifdef USE_HP_IP4FRAG
2287 static cas_hp_inst_t cas_prog_ip4fragtab[] = {
2288         { "packet arrival?", 0xffff, 0x0000, OP_NP,  6, S1_VLAN,  0, S1_PCKT,
2289           CL_REG, 0x3ff, 1, 0x0, 0x0000},
2290         { "VLAN?", 0xffff, 0x8100, OP_EQ,  1, S1_CFI,   0, S1_8023,
2291           IM_CTL, 0x00a,  3, 0x0, 0xffff},
2292         { "CFI?", 0x1000, 0x1000, OP_EQ,  0, S3_CLNP,  1, S1_8023,
2293           CL_REG, 0x000,  0, 0x0, 0x0000},
2294         { "8023?", 0xffff, 0x0600, OP_LT,  1, S1_LLC,   0, S1_IPV4,
2295           CL_REG, 0x000,  0, 0x0, 0x0000},
2296         { "LLC?", 0xffff, 0xaaaa, OP_EQ,  1, S1_LLCc,  0, S3_CLNP,
2297           CL_REG, 0x000,  0, 0x0, 0x0000},
2298         { "LLCc?",0xff00, 0x0300, OP_EQ,  2, S1_IPV4,  0, S3_CLNP,
2299           CL_REG, 0x000,  0, 0x0, 0x0000},
2300         { "IPV4?", 0xffff, 0x0800, OP_EQ,  1, S1_IPV4c, 0, S1_IPV6,
2301           LD_SAP, 0x100,  3, 0x0, 0xffff},
2302         { "IPV4 cont?", 0xff00, 0x4500, OP_EQ,  3, S1_IPV4F, 0, S3_CLNP,
2303           LD_SUM, 0x00a,  1, 0x0, 0x0000},
2304         { "IPV4 frag?", 0x3fff, 0x0000, OP_EQ,  1, S1_TCP44, 0, S3_FRAG,
2305           LD_LEN, 0x03e,  3, 0x0, 0xffff},
2306         { "TCP44?", 0x00ff, 0x0006, OP_EQ,  7, S3_TCPSQ, 0, S3_CLNP,
2307           LD_FID, 0x182,  3, 0x0, 0xffff}, /* FID IP4&TCP src+dst */
2308         { "IPV6?", 0xffff, 0x86dd, OP_EQ,  1, S3_IPV6c, 0, S3_CLNP,
2309           LD_SUM, 0x015,  1, 0x0, 0x0000},
2310         { "IPV6 cont?", 0xf000, 0x6000, OP_EQ,  3, S3_TCP64, 0, S3_CLNP,
2311           LD_FID, 0x484,  1, 0x0, 0xffff}, /* FID IP6&TCP src+dst */
2312         { "TCP64?", 0xff00, 0x0600, OP_EQ, 18, S3_TCPSQ, 0, S3_CLNP,
2313           LD_LEN, 0x03f,  1, 0x0, 0xffff},
2314         { "TCP seq",    /* DADDR should point to dest port */
2315           0x0000, 0x0000, OP_EQ,  0, S3_TCPFG, 4, S3_TCPFG, LD_SEQ,
2316           0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
2317         { "TCP control flags", 0x0000, 0x0000, OP_EQ,  0, S3_TCPHL, 0,
2318           S3_TCPHL, ST_FLG, 0x045,  3, 0x0, 0x002f}, /* Load TCP flags */
2319         { "TCP length", 0x0000, 0x0000, OP_EQ,  0, S3_TCPHc, 0, S3_TCPHc,
2320           LD_R1,  0x205,  3, 0xB, 0xf000},
2321         { "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2322           LD_HDR, 0x0ff,  3, 0x0, 0xffff},
2323         { "IP4 Fragment", 0x0000, 0x0000, OP_EQ,  0, S3_FOFF,  0, S3_FOFF,
2324           LD_FID, 0x103,  3, 0x0, 0xffff}, /* FID IP4 src+dst */
2325         { "IP4 frag offset", 0x0000, 0x0000, OP_EQ,  0, S3_FOFF,  0, S3_FOFF,
2326           LD_SEQ, 0x040,  1, 0xD, 0xfff8},
2327         { "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2328           IM_CTL, 0x001,  3, 0x0, 0x0001},
2329         { NULL },
2330 };
2331 #ifdef HP_IP4FRAG_DEFAULT
2332 #define CAS_HP_FIRMWARE               cas_prog_ip4fragtab
2333 #endif
2334 #endif
2335 
2336 /*
2337  * Alternate table which does batching without reassembly
2338  */
2339 #ifdef USE_HP_IP46TCP4BATCH
2340 static cas_hp_inst_t cas_prog_ip46tcp4batchtab[] = {
2341         CAS_PROG_IP46TCP4_PREAMBLE,
2342         { "TCP seq",    /* DADDR should point to dest port */
2343           0x0000, 0x0000, OP_EQ,  0, S1_TCPFG, 0, S1_TCPFG, LD_SEQ,
2344           0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
2345         { "TCP control flags", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHL, 0,
2346           S1_TCPHL, ST_FLG, 0x000,  3, 0x0, 0x0000}, /* Load TCP flags */
2347         { "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0,
2348           S1_TCPHc, LD_R1,  0x205,  3, 0xB, 0xf000},
2349         { "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
2350           S1_PCKT,  IM_CTL, 0x040,  3, 0x0, 0xffff}, /* set batch bit */
2351         { "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2352           IM_CTL, 0x001,  3, 0x0, 0x0001},
2353         { "Drop packet", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
2354           S1_PCKT,  IM_CTL, 0x080,  3, 0x0, 0xffff},
2355         { NULL },
2356 };
2357 #ifdef HP_IP46TCP4BATCH_DEFAULT
2358 #define CAS_HP_FIRMWARE               cas_prog_ip46tcp4batchtab
2359 #endif
2360 #endif
2361 
2362 /* Workaround for Cassini rev2 descriptor corruption problem.
2363  * Does batching without reassembly, and sets the SAP to a known
2364  * data pattern for all packets.
2365  */
2366 #ifdef USE_HP_WORKAROUND
2367 static cas_hp_inst_t  cas_prog_workaroundtab[] = {
2368         { "packet arrival?", 0xffff, 0x0000, OP_NP,  6, S1_VLAN,  0,
2369           S1_PCKT,  CL_REG, 0x3ff,  1, 0x0, 0x0000} ,
2370         { "VLAN?", 0xffff, 0x8100, OP_EQ,  1, S1_CFI, 0, S1_8023,
2371           IM_CTL, 0x04a,  3, 0x0, 0xffff},
2372         { "CFI?", 0x1000, 0x1000, OP_EQ,  0, S1_CLNP,  1, S1_8023,
2373           CL_REG, 0x000,  0, 0x0, 0x0000},
2374         { "8023?", 0xffff, 0x0600, OP_LT,  1, S1_LLC,   0, S1_IPV4,
2375           CL_REG, 0x000,  0, 0x0, 0x0000},
2376         { "LLC?", 0xffff, 0xaaaa, OP_EQ,  1, S1_LLCc,  0, S1_CLNP,
2377           CL_REG, 0x000,  0, 0x0, 0x0000},
2378         { "LLCc?", 0xff00, 0x0300, OP_EQ,  2, S1_IPV4,  0, S1_CLNP,
2379           CL_REG, 0x000,  0, 0x0, 0x0000},
2380         { "IPV4?", 0xffff, 0x0800, OP_EQ,  1, S1_IPV4c, 0, S1_IPV6,
2381           IM_SAP, 0x6AE,  3, 0x0, 0xffff},
2382         { "IPV4 cont?", 0xff00, 0x4500, OP_EQ,  3, S1_IPV4F, 0, S1_CLNP,
2383           LD_SUM, 0x00a,  1, 0x0, 0x0000},
2384         { "IPV4 frag?", 0x3fff, 0x0000, OP_EQ,  1, S1_TCP44, 0, S1_CLNP,
2385           LD_LEN, 0x03e,  1, 0x0, 0xffff},
2386         { "TCP44?", 0x00ff, 0x0006, OP_EQ,  7, S1_TCPSQ, 0, S1_CLNP,
2387           LD_FID, 0x182,  3, 0x0, 0xffff}, /* FID IP4&TCP src+dst */
2388         { "IPV6?", 0xffff, 0x86dd, OP_EQ,  1, S1_IPV6L, 0, S1_CLNP,
2389           LD_SUM, 0x015,  1, 0x0, 0x0000},
2390         { "IPV6 len", 0xf000, 0x6000, OP_EQ,  0, S1_IPV6c, 0, S1_CLNP,
2391           IM_R1,  0x128,  1, 0x0, 0xffff},
2392         { "IPV6 cont?", 0x0000, 0x0000, OP_EQ,  3, S1_TCP64, 0, S1_CLNP,
2393           LD_FID, 0x484,  1, 0x0, 0xffff}, /* FID IP6&TCP src+dst */
2394         { "TCP64?", 0xff00, 0x0600, OP_EQ, 18, S1_TCPSQ, 0, S1_CLNP,
2395           LD_LEN, 0x03f,  1, 0x0, 0xffff},
2396         { "TCP seq",      /* DADDR should point to dest port */
2397           0x0000, 0x0000, OP_EQ,  0, S1_TCPFG, 4, S1_TCPFG, LD_SEQ,
2398           0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
2399         { "TCP control flags", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHL, 0,
2400           S1_TCPHL, ST_FLG, 0x045,  3, 0x0, 0x002f}, /* Load TCP flags */
2401         { "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0, S1_TCPHc,
2402           LD_R1,  0x205,  3, 0xB, 0xf000},
2403         { "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
2404           S1_PCKT,  LD_HDR, 0x0ff,  3, 0x0, 0xffff},
2405         { "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_CLNP2, 0, S1_CLNP2,
2406           IM_SAP, 0x6AE,  3, 0x0, 0xffff} ,
2407         { "Cleanup 2", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2408           IM_CTL, 0x001,  3, 0x0, 0x0001},
2409         { NULL },
2410 };
2411 #ifdef HP_WORKAROUND_DEFAULT
2412 #define CAS_HP_FIRMWARE               cas_prog_workaroundtab
2413 #endif
2414 #endif
2415 
2416 #ifdef USE_HP_ENCRYPT
2417 static cas_hp_inst_t  cas_prog_encryptiontab[] = {
2418         { "packet arrival?", 0xffff, 0x0000, OP_NP,  6, S1_VLAN,  0,
2419           S1_PCKT,  CL_REG, 0x3ff,  1, 0x0, 0x0000},
2420         { "VLAN?", 0xffff, 0x8100, OP_EQ,  1, S1_CFI,   0, S1_8023,
2421           IM_CTL, 0x00a,  3, 0x0, 0xffff},
2422 #if 0
2423 //"CFI?", /* 02 FIND CFI and If FIND go to S1_DROP */
2424 //0x1000, 0x1000, OP_EQ,  0, S1_DROP,  1, S1_8023,  CL_REG, 0x000,  0, 0x0, 0x00
2425         00,
2426 #endif
2427         { "CFI?", /* FIND CFI and If FIND go to CleanUP1 (ignore and send to host) */
2428           0x1000, 0x1000, OP_EQ,  0, S1_CLNP,  1, S1_8023,
2429           CL_REG, 0x000,  0, 0x0, 0x0000},
2430         { "8023?", 0xffff, 0x0600, OP_LT,  1, S1_LLC,   0, S1_IPV4,
2431           CL_REG, 0x000,  0, 0x0, 0x0000},
2432         { "LLC?", 0xffff, 0xaaaa, OP_EQ,  1, S1_LLCc,  0, S1_CLNP,
2433           CL_REG, 0x000,  0, 0x0, 0x0000},
2434         { "LLCc?", 0xff00, 0x0300, OP_EQ,  2, S1_IPV4,  0, S1_CLNP,
2435           CL_REG, 0x000,  0, 0x0, 0x0000},
2436         { "IPV4?", 0xffff, 0x0800, OP_EQ,  1, S1_IPV4c, 0, S1_IPV6,
2437           LD_SAP, 0x100,  3, 0x0, 0xffff},
2438         { "IPV4 cont?", 0xff00, 0x4500, OP_EQ,  3, S1_IPV4F, 0, S1_CLNP,
2439           LD_SUM, 0x00a,  1, 0x0, 0x0000},
2440         { "IPV4 frag?", 0x3fff, 0x0000, OP_EQ,  1, S1_TCP44, 0, S1_CLNP,
2441           LD_LEN, 0x03e,  1, 0x0, 0xffff},
2442         { "TCP44?", 0x00ff, 0x0006, OP_EQ,  7, S1_TCPSQ, 0, S1_ESP4,
2443           LD_FID, 0x182,  1, 0x0, 0xffff}, /* FID IP4&TCP src+dst */
2444         { "IPV6?", 0xffff, 0x86dd, OP_EQ,  1, S1_IPV6L, 0, S1_CLNP,
2445           LD_SUM, 0x015,  1, 0x0, 0x0000},
2446         { "IPV6 len", 0xf000, 0x6000, OP_EQ,  0, S1_IPV6c, 0, S1_CLNP,
2447           IM_R1,  0x128,  1, 0x0, 0xffff},
2448         { "IPV6 cont?", 0x0000, 0x0000, OP_EQ,  3, S1_TCP64, 0, S1_CLNP,
2449           LD_FID, 0x484,  1, 0x0, 0xffff}, /*  FID IP6&TCP src+dst */
2450         { "TCP64?",
2451 #if 0
2452 //@@@0xff00, 0x0600, OP_EQ, 18, S1_TCPSQ, 0, S1_ESP6,  LD_LEN, 0x03f,  1, 0x0, 0xffff,
2453 #endif
2454           0xff00, 0x0600, OP_EQ, 12, S1_TCPSQ, 0, S1_ESP6,  LD_LEN,
2455           0x03f,  1, 0x0, 0xffff},
2456         { "TCP seq", /* 14:DADDR should point to dest port */
2457           0xFFFF, 0x0080, OP_EQ,  0, S2_HTTP,  0, S1_TCPFG, LD_SEQ,
2458           0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
2459         { "TCP control flags", 0xFFFF, 0x8080, OP_EQ,  0, S2_HTTP,  0,
2460           S1_TCPHL, ST_FLG, 0x145,  2, 0x0, 0x002f}, /* Load TCP flags */
2461         { "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0, S1_TCPHc,
2462           LD_R1,  0x205,  3, 0xB, 0xf000} ,
2463         { "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
2464           S1_PCKT,  LD_HDR, 0x0ff,  3, 0x0, 0xffff},
2465         { "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_CLNP2,  0, S1_CLNP2,
2466           IM_CTL, 0x001,  3, 0x0, 0x0001},
2467         { "Cleanup 2", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2468           CL_REG, 0x002,  3, 0x0, 0x0000},
2469         { "Drop packet", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2470           IM_CTL, 0x080,  3, 0x0, 0xffff},
2471         { "No HTTP", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
2472           IM_CTL, 0x044,  3, 0x0, 0xffff},
2473         { "IPV4 ESP encrypted?",  /* S1_ESP4 */
2474           0x00ff, 0x0032, OP_EQ,  0, S1_CLNP2, 0, S1_AH4, IM_CTL,
2475           0x021, 1,  0x0, 0xffff},
2476         { "IPV4 AH encrypted?",   /* S1_AH4 */
2477           0x00ff, 0x0033, OP_EQ,  0, S1_CLNP2, 0, S1_CLNP, IM_CTL,
2478           0x021, 1,  0x0, 0xffff},
2479         { "IPV6 ESP encrypted?",  /* S1_ESP6 */
2480 #if 0
2481 //@@@0x00ff, 0x0032, OP_EQ,  0, S1_CLNP2, 0, S1_AH6, IM_CTL, 0x021, 1,  0x0, 0xffff,
2482 #endif
2483           0xff00, 0x3200, OP_EQ,  0, S1_CLNP2, 0, S1_AH6, IM_CTL,
2484           0x021, 1,  0x0, 0xffff},
2485         { "IPV6 AH encrypted?",   /* S1_AH6 */
2486 #if 0
2487 //@@@0x00ff, 0x0033, OP_EQ,  0, S1_CLNP2, 0, S1_CLNP, IM_CTL, 0x021, 1,  0x0, 0xffff,
2488 #endif
2489           0xff00, 0x3300, OP_EQ,  0, S1_CLNP2, 0, S1_CLNP, IM_CTL,
2490           0x021, 1,  0x0, 0xffff},
2491         { NULL },
2492 };
2493 #ifdef HP_ENCRYPT_DEFAULT
2494 #define CAS_HP_FIRMWARE               cas_prog_encryptiontab
2495 #endif
2496 #endif
2497 
2498 static cas_hp_inst_t cas_prog_null[] = { {NULL} };
2499 #ifdef HP_NULL_DEFAULT
2500 #define CAS_HP_FIRMWARE               cas_prog_null
2501 #endif
2502 
2503 /* phy types */
2504 #define   CAS_PHY_UNKNOWN       0x00
2505 #define   CAS_PHY_SERDES        0x01
2506 #define   CAS_PHY_MII_MDIO0     0x02
2507 #define   CAS_PHY_MII_MDIO1     0x04
2508 #define   CAS_PHY_MII(x)        ((x) & (CAS_PHY_MII_MDIO0 | CAS_PHY_MII_MDIO1))
2509 
2510 /* _RING_INDEX is the index for the ring sizes to be used.  _RING_SIZE
2511  * is the actual size. the default index for the various rings is
2512  * 8. NOTE: there a bunch of alignment constraints for the rings. to
2513  * deal with that, i just allocate rings to create the desired
2514  * alignment. here are the constraints:
2515  *   RX DESC and COMP rings must be 8KB aligned
2516  *   TX DESC must be 2KB aligned.
2517  * if you change the numbers, be cognizant of how the alignment will change
2518  * in INIT_BLOCK as well.
2519  */
2520 
2521 #define DESC_RING_I_TO_S(x)  (32*(1 << (x)))
2522 #define COMP_RING_I_TO_S(x)  (128*(1 << (x)))
2523 #define TX_DESC_RING_INDEX 4  /* 512 = 8k */
2524 #define RX_DESC_RING_INDEX 4  /* 512 = 8k */
2525 #define RX_COMP_RING_INDEX 4  /* 2048 = 64k: should be 4x rx ring size */
2526 
2527 #if (TX_DESC_RING_INDEX > 8) || (TX_DESC_RING_INDEX < 0)
2528 #error TX_DESC_RING_INDEX must be between 0 and 8
2529 #endif
2530 
2531 #if (RX_DESC_RING_INDEX > 8) || (RX_DESC_RING_INDEX < 0)
2532 #error RX_DESC_RING_INDEX must be between 0 and 8
2533 #endif
2534 
2535 #if (RX_COMP_RING_INDEX > 8) || (RX_COMP_RING_INDEX < 0)
2536 #error RX_COMP_RING_INDEX must be between 0 and 8
2537 #endif
2538 
2539 #define N_TX_RINGS                    MAX_TX_RINGS      /* for QoS */
2540 #define N_TX_RINGS_MASK               MAX_TX_RINGS_MASK
2541 #define N_RX_DESC_RINGS               MAX_RX_DESC_RINGS /* 1 for ipsec */
2542 #define N_RX_COMP_RINGS               0x1 /* for mult. PCI interrupts */
2543 
2544 /* number of flows that can go through re-assembly */
2545 #define N_RX_FLOWS                    64
2546 
2547 #define TX_DESC_RING_SIZE  DESC_RING_I_TO_S(TX_DESC_RING_INDEX)
2548 #define RX_DESC_RING_SIZE  DESC_RING_I_TO_S(RX_DESC_RING_INDEX)
2549 #define RX_COMP_RING_SIZE  COMP_RING_I_TO_S(RX_COMP_RING_INDEX)
2550 #define TX_DESC_RINGN_INDEX(x) TX_DESC_RING_INDEX
2551 #define RX_DESC_RINGN_INDEX(x) RX_DESC_RING_INDEX
2552 #define RX_COMP_RINGN_INDEX(x) RX_COMP_RING_INDEX
2553 #define TX_DESC_RINGN_SIZE(x)  TX_DESC_RING_SIZE
2554 #define RX_DESC_RINGN_SIZE(x)  RX_DESC_RING_SIZE
2555 #define RX_COMP_RINGN_SIZE(x)  RX_COMP_RING_SIZE
2556 
2557 /* convert values */
2558 #define CAS_BASE(x, y)                (((y) << (x ## _SHIFT)) & (x ## _MASK))
2559 #define CAS_VAL(x, y)                 (((y) & (x ## _MASK)) >> (x ## _SHIFT))
2560 #define CAS_TX_RINGN_BASE(y)          ((TX_DESC_RINGN_INDEX(y) << \
2561                                         TX_CFG_DESC_RINGN_SHIFT(y)) & \
2562                                         TX_CFG_DESC_RINGN_MASK(y))
2563 
2564 /* min is 2k, but we can't do jumbo frames unless it's at least 8k */
2565 #define CAS_MIN_PAGE_SHIFT            11 /* 2048 */
2566 #define CAS_JUMBO_PAGE_SHIFT          13 /* 8192 */
2567 #define CAS_MAX_PAGE_SHIFT            14 /* 16384 */
2568 
2569 #define TX_DESC_BUFLEN_MASK         0x0000000000003FFFULL /* buffer length in
2570                                                              bytes. 0 - 9256 */
2571 #define TX_DESC_BUFLEN_SHIFT        0
2572 #define TX_DESC_CSUM_START_MASK     0x00000000001F8000ULL /* checksum start. #
2573                                                              of bytes to be
2574                                                              skipped before
2575                                                              csum calc begins.
2576                                                              value must be
2577                                                              even */
2578 #define TX_DESC_CSUM_START_SHIFT    15
2579 #define TX_DESC_CSUM_STUFF_MASK     0x000000001FE00000ULL /* checksum stuff.
2580                                                              byte offset w/in
2581                                                              the pkt for the
2582                                                              1st csum byte.
2583                                                              must be > 8 */
2584 #define TX_DESC_CSUM_STUFF_SHIFT    21
2585 #define TX_DESC_CSUM_EN             0x0000000020000000ULL /* enable checksum */
2586 #define TX_DESC_EOF                 0x0000000040000000ULL /* end of frame */
2587 #define TX_DESC_SOF                 0x0000000080000000ULL /* start of frame */
2588 #define TX_DESC_INTME               0x0000000100000000ULL /* interrupt me */
2589 #define TX_DESC_NO_CRC              0x0000000200000000ULL /* debugging only.
2590                                                              CRC will not be
2591                                                              inserted into
2592                                                              outgoing frame. */
2593 struct cas_tx_desc {
2594         __le64     control;
2595         __le64     buffer;
2596 };
2597 
2598 /* descriptor ring for free buffers contains page-sized buffers. the index
2599  * value is not used by the hw in any way. it's just stored and returned in
2600  * the completion ring.
2601  */
2602 struct cas_rx_desc {
2603         __le64     index;
2604         __le64     buffer;
2605 };
2606 
2607 /* received packets are put on the completion ring. */
2608 /* word 1 */
2609 #define RX_COMP1_DATA_SIZE_MASK           0x0000000007FFE000ULL
2610 #define RX_COMP1_DATA_SIZE_SHIFT          13
2611 #define RX_COMP1_DATA_OFF_MASK            0x000001FFF8000000ULL
2612 #define RX_COMP1_DATA_OFF_SHIFT           27
2613 #define RX_COMP1_DATA_INDEX_MASK          0x007FFE0000000000ULL
2614 #define RX_COMP1_DATA_INDEX_SHIFT         41
2615 #define RX_COMP1_SKIP_MASK                0x0180000000000000ULL
2616 #define RX_COMP1_SKIP_SHIFT               55
2617 #define RX_COMP1_RELEASE_NEXT             0x0200000000000000ULL
2618 #define RX_COMP1_SPLIT_PKT                0x0400000000000000ULL
2619 #define RX_COMP1_RELEASE_FLOW             0x0800000000000000ULL
2620 #define RX_COMP1_RELEASE_DATA             0x1000000000000000ULL
2621 #define RX_COMP1_RELEASE_HDR              0x2000000000000000ULL
2622 #define RX_COMP1_TYPE_MASK                0xC000000000000000ULL
2623 #define RX_COMP1_TYPE_SHIFT               62
2624 
2625 /* word 2 */
2626 #define RX_COMP2_NEXT_INDEX_MASK          0x00000007FFE00000ULL
2627 #define RX_COMP2_NEXT_INDEX_SHIFT         21
2628 #define RX_COMP2_HDR_SIZE_MASK            0x00000FF800000000ULL
2629 #define RX_COMP2_HDR_SIZE_SHIFT           35
2630 #define RX_COMP2_HDR_OFF_MASK             0x0003F00000000000ULL
2631 #define RX_COMP2_HDR_OFF_SHIFT            44
2632 #define RX_COMP2_HDR_INDEX_MASK           0xFFFC000000000000ULL
2633 #define RX_COMP2_HDR_INDEX_SHIFT          50
2634 
2635 /* word 3 */
2636 #define RX_COMP3_SMALL_PKT                0x0000000000000001ULL
2637 #define RX_COMP3_JUMBO_PKT                0x0000000000000002ULL
2638 #define RX_COMP3_JUMBO_HDR_SPLIT_EN       0x0000000000000004ULL
2639 #define RX_COMP3_CSUM_START_MASK          0x000000000007F000ULL
2640 #define RX_COMP3_CSUM_START_SHIFT         12
2641 #define RX_COMP3_FLOWID_MASK              0x0000000001F80000ULL
2642 #define RX_COMP3_FLOWID_SHIFT             19
2643 #define RX_COMP3_OPCODE_MASK              0x000000000E000000ULL
2644 #define RX_COMP3_OPCODE_SHIFT             25
2645 #define RX_COMP3_FORCE_FLAG               0x0000000010000000ULL
2646 #define RX_COMP3_NO_ASSIST                0x0000000020000000ULL
2647 #define RX_COMP3_LOAD_BAL_MASK            0x000001F800000000ULL
2648 #define RX_COMP3_LOAD_BAL_SHIFT           35
2649 #define RX_PLUS_COMP3_ENC_PKT             0x0000020000000000ULL /* cas+ */
2650 #define RX_COMP3_L3_HEAD_OFF_MASK         0x0000FE0000000000ULL /* cas */
2651 #define RX_COMP3_L3_HEAD_OFF_SHIFT        41
2652 #define RX_PLUS_COMP_L3_HEAD_OFF_MASK     0x0000FC0000000000ULL /* cas+ */
2653 #define RX_PLUS_COMP_L3_HEAD_OFF_SHIFT    42
2654 #define RX_COMP3_SAP_MASK                 0xFFFF000000000000ULL
2655 #define RX_COMP3_SAP_SHIFT                48
2656 
2657 /* word 4 */
2658 #define RX_COMP4_TCP_CSUM_MASK            0x000000000000FFFFULL
2659 #define RX_COMP4_TCP_CSUM_SHIFT           0
2660 #define RX_COMP4_PKT_LEN_MASK             0x000000003FFF0000ULL
2661 #define RX_COMP4_PKT_LEN_SHIFT            16
2662 #define RX_COMP4_PERFECT_MATCH_MASK       0x00000003C0000000ULL
2663 #define RX_COMP4_PERFECT_MATCH_SHIFT      30
2664 #define RX_COMP4_ZERO                     0x0000080000000000ULL
2665 #define RX_COMP4_HASH_VAL_MASK            0x0FFFF00000000000ULL
2666 #define RX_COMP4_HASH_VAL_SHIFT           44
2667 #define RX_COMP4_HASH_PASS                0x1000000000000000ULL
2668 #define RX_COMP4_BAD                      0x4000000000000000ULL
2669 #define RX_COMP4_LEN_MISMATCH             0x8000000000000000ULL
2670 
2671 /* we encode the following: ring/index/release. only 14 bits
2672  * are usable.
2673  * NOTE: the encoding is dependent upon RX_DESC_RING_SIZE and
2674  *       MAX_RX_DESC_RINGS. */
2675 #define RX_INDEX_NUM_MASK                 0x0000000000000FFFULL
2676 #define RX_INDEX_NUM_SHIFT                0
2677 #define RX_INDEX_RING_MASK                0x0000000000001000ULL
2678 #define RX_INDEX_RING_SHIFT               12
2679 #define RX_INDEX_RELEASE                  0x0000000000002000ULL
2680 
2681 struct cas_rx_comp {
2682         __le64     word1;
2683         __le64     word2;
2684         __le64     word3;
2685         __le64     word4;
2686 };
2687 
2688 enum link_state {
2689         link_down = 0,  /* No link, will retry */
2690         link_aneg,      /* Autoneg in progress */
2691         link_force_try, /* Try Forced link speed */
2692         link_force_ret, /* Forced mode worked, retrying autoneg */
2693         link_force_ok,  /* Stay in forced mode */
2694         link_up         /* Link is up */
2695 };
2696 
2697 typedef struct cas_page {
2698         struct list_head list;
2699         struct page *buffer;
2700         dma_addr_t dma_addr;
2701         int used;
2702 } cas_page_t;
2703 
2704 
2705 /* some alignment constraints:
2706  * TX DESC, RX DESC, and RX COMP must each be 8K aligned.
2707  * TX COMPWB must be 8-byte aligned.
2708  * to accomplish this, here's what we do:
2709  *
2710  * INIT_BLOCK_RX_COMP  = 64k (already aligned)
2711  * INIT_BLOCK_RX_DESC  = 8k
2712  * INIT_BLOCK_TX       = 8k
2713  * INIT_BLOCK_RX1_DESC = 8k
2714  * TX COMPWB
2715  */
2716 #define INIT_BLOCK_TX           (TX_DESC_RING_SIZE)
2717 #define INIT_BLOCK_RX_DESC      (RX_DESC_RING_SIZE)
2718 #define INIT_BLOCK_RX_COMP      (RX_COMP_RING_SIZE)
2719 
2720 struct cas_init_block {
2721         struct cas_rx_comp rxcs[N_RX_COMP_RINGS][INIT_BLOCK_RX_COMP];
2722         struct cas_rx_desc rxds[N_RX_DESC_RINGS][INIT_BLOCK_RX_DESC];
2723         struct cas_tx_desc txds[N_TX_RINGS][INIT_BLOCK_TX];
2724         __le64 tx_compwb;
2725 };
2726 
2727 /* tiny buffers to deal with target abort issue. we allocate a bit
2728  * over so that we don't have target abort issues with these buffers
2729  * as well.
2730  */
2731 #define TX_TINY_BUF_LEN    0x100
2732 #define TX_TINY_BUF_BLOCK  ((INIT_BLOCK_TX + 1)*TX_TINY_BUF_LEN)
2733 
2734 struct cas_tiny_count {
2735         int nbufs;
2736         int used;
2737 };
2738 
2739 struct cas {
2740         spinlock_t lock; /* for most bits */
2741         spinlock_t tx_lock[N_TX_RINGS]; /* tx bits */
2742         spinlock_t stat_lock[N_TX_RINGS + 1]; /* for stat gathering */
2743         spinlock_t rx_inuse_lock; /* rx inuse list */
2744         spinlock_t rx_spare_lock; /* rx spare list */
2745 
2746         void __iomem *regs;
2747         int tx_new[N_TX_RINGS], tx_old[N_TX_RINGS];
2748         int rx_old[N_RX_DESC_RINGS];
2749         int rx_cur[N_RX_COMP_RINGS], rx_new[N_RX_COMP_RINGS];
2750         int rx_last[N_RX_DESC_RINGS];
2751 
2752         struct napi_struct napi;
2753 
2754         /* Set when chip is actually in operational state
2755          * (ie. not power managed) */
2756         int hw_running;
2757         int opened;
2758         struct mutex pm_mutex; /* open/close/suspend/resume */
2759 
2760         struct cas_init_block *init_block;
2761         struct cas_tx_desc *init_txds[MAX_TX_RINGS];
2762         struct cas_rx_desc *init_rxds[MAX_RX_DESC_RINGS];
2763         struct cas_rx_comp *init_rxcs[MAX_RX_COMP_RINGS];
2764 
2765         /* we use sk_buffs for tx and pages for rx. the rx skbuffs
2766          * are there for flow re-assembly. */
2767         struct sk_buff      *tx_skbs[N_TX_RINGS][TX_DESC_RING_SIZE];
2768         struct sk_buff_head  rx_flows[N_RX_FLOWS];
2769         cas_page_t          *rx_pages[N_RX_DESC_RINGS][RX_DESC_RING_SIZE];
2770         struct list_head     rx_spare_list, rx_inuse_list;
2771         int                  rx_spares_needed;
2772 
2773         /* for small packets when copying would be quicker than
2774            mapping */
2775         struct cas_tiny_count tx_tiny_use[N_TX_RINGS][TX_DESC_RING_SIZE];
2776         u8 *tx_tiny_bufs[N_TX_RINGS];
2777 
2778         u32                     msg_enable;
2779 
2780         /* N_TX_RINGS must be >= N_RX_DESC_RINGS */
2781         struct net_device_stats net_stats[N_TX_RINGS + 1];
2782 
2783         u32                     pci_cfg[64 >> 2];
2784         u8                      pci_revision;
2785 
2786         int                     phy_type;
2787         int                     phy_addr;
2788         u32                     phy_id;
2789 #define CAS_FLAG_1000MB_CAP     0x00000001
2790 #define CAS_FLAG_REG_PLUS       0x00000002
2791 #define CAS_FLAG_TARGET_ABORT   0x00000004
2792 #define CAS_FLAG_SATURN         0x00000008
2793 #define CAS_FLAG_RXD_POST_MASK  0x000000F0
2794 #define CAS_FLAG_RXD_POST_SHIFT 4
2795 #define CAS_FLAG_RXD_POST(x)    ((1 << (CAS_FLAG_RXD_POST_SHIFT + (x))) & \
2796                                  CAS_FLAG_RXD_POST_MASK)
2797 #define CAS_FLAG_ENTROPY_DEV    0x00000100
2798 #define CAS_FLAG_NO_HW_CSUM     0x00000200
2799         u32                     cas_flags;
2800         int                     packet_min; /* minimum packet size */
2801         int                     tx_fifo_size;
2802         int                     rx_fifo_size;
2803         int                     rx_pause_off;
2804         int                     rx_pause_on;
2805         int                     crc_size;      /* 4 if half-duplex */
2806 
2807         int                     pci_irq_INTC;
2808         int                     min_frame_size; /* for tx fifo workaround */
2809 
2810         /* page size allocation */
2811         int                     page_size;
2812         int                     page_order;
2813         int                     mtu_stride;
2814 
2815         u32                     mac_rx_cfg;
2816 
2817         /* Autoneg & PHY control */
2818         int                     link_cntl;
2819         int                     link_fcntl;
2820         enum link_state         lstate;
2821         struct timer_list       link_timer;
2822         int                     timer_ticks;
2823         struct work_struct      reset_task;
2824 #if 0
2825         atomic_t                reset_task_pending;
2826 #else
2827         atomic_t                reset_task_pending;
2828         atomic_t                reset_task_pending_mtu;
2829         atomic_t                reset_task_pending_spare;
2830         atomic_t                reset_task_pending_all;
2831 #endif
2832 
2833         /* Link-down problem workaround */
2834 #define LINK_TRANSITION_UNKNOWN         0
2835 #define LINK_TRANSITION_ON_FAILURE      1
2836 #define LINK_TRANSITION_STILL_FAILED    2
2837 #define LINK_TRANSITION_LINK_UP         3
2838 #define LINK_TRANSITION_LINK_CONFIG     4
2839 #define LINK_TRANSITION_LINK_DOWN       5
2840 #define LINK_TRANSITION_REQUESTED_RESET 6
2841         int                     link_transition;
2842         int                     link_transition_jiffies_valid;
2843         unsigned long           link_transition_jiffies;
2844 
2845         /* Tuning */
2846         u8 orig_cacheline_size; /* value when loaded */
2847 #define CAS_PREF_CACHELINE_SIZE  0x20   /* Minimum desired */
2848 
2849         /* Diagnostic counters and state. */
2850         int                     casreg_len; /* reg-space size for dumping */
2851         u64                     pause_entered;
2852         u16                     pause_last_time_recvd;
2853 
2854         dma_addr_t block_dvma, tx_tiny_dvma[N_TX_RINGS];
2855         struct pci_dev *pdev;
2856         struct net_device *dev;
2857 #if defined(CONFIG_OF)
2858         struct device_node      *of_node;
2859 #endif
2860 
2861         /* Firmware Info */
2862         u16                     fw_load_addr;
2863         u32                     fw_size;
2864         u8                      *fw_data;
2865 };
2866 
2867 #define TX_DESC_NEXT(r, x)  (((x) + 1) & (TX_DESC_RINGN_SIZE(r) - 1))
2868 #define RX_DESC_ENTRY(r, x) ((x) & (RX_DESC_RINGN_SIZE(r) - 1))
2869 #define RX_COMP_ENTRY(r, x) ((x) & (RX_COMP_RINGN_SIZE(r) - 1))
2870 
2871 #define TX_BUFF_COUNT(r, x, y)    ((x) <= (y) ? ((y) - (x)) : \
2872         (TX_DESC_RINGN_SIZE(r) - (x) + (y)))
2873 
2874 #define TX_BUFFS_AVAIL(cp, i)   ((cp)->tx_old[(i)] <= (cp)->tx_new[(i)] ? \
2875         (cp)->tx_old[(i)] + (TX_DESC_RINGN_SIZE(i) - 1) - (cp)->tx_new[(i)] : \
2876         (cp)->tx_old[(i)] - (cp)->tx_new[(i)] - 1)
2877 
2878 #define CAS_ALIGN(addr, align) \
2879      (((unsigned long) (addr) + ((align) - 1UL)) & ~((align) - 1))
2880 
2881 #define RX_FIFO_SIZE                  16384
2882 #define EXPANSION_ROM_SIZE            65536
2883 
2884 #define CAS_MC_EXACT_MATCH_SIZE       15
2885 #define CAS_MC_HASH_SIZE              256
2886 #define CAS_MC_HASH_MAX              (CAS_MC_EXACT_MATCH_SIZE + \
2887                                       CAS_MC_HASH_SIZE)
2888 
2889 #define TX_TARGET_ABORT_LEN           0x20
2890 #define RX_SWIVEL_OFF_VAL             0x2
2891 #define RX_AE_FREEN_VAL(x)            (RX_DESC_RINGN_SIZE(x) >> 1)
2892 #define RX_AE_COMP_VAL                (RX_COMP_RING_SIZE >> 1)
2893 #define RX_BLANK_INTR_PKT_VAL         0x05
2894 #define RX_BLANK_INTR_TIME_VAL        0x0F
2895 #define HP_TCP_THRESH_VAL             1530 /* reduce to enable reassembly */
2896 
2897 #define RX_SPARE_COUNT                (RX_DESC_RING_SIZE >> 1)
2898 #define RX_SPARE_RECOVER_VAL          (RX_SPARE_COUNT >> 2)
2899 
2900 #endif /* _CASSINI_H */

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