The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/xscale/ixp425/if_npereg.h

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    1 /*-
    2  * Copyright (c) 2006 Sam Leffler, Errno Consulting
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer,
   10  *    without modification.
   11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
   13  *    redistribution must be conditioned upon including a substantially
   14  *    similar Disclaimer requirement for further binary redistribution.
   15  *
   16  * NO WARRANTY
   17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   19  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
   20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
   21  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
   22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   27  * THE POSSIBILITY OF SUCH DAMAGES.
   28  *
   29  * $FreeBSD$
   30  */
   31 
   32 /*
   33  * Copyright (c) 2001-2005, Intel Corporation.
   34  * All rights reserved.
   35  * 
   36  * Redistribution and use in source and binary forms, with or without
   37  * modification, are permitted provided that the following conditions
   38  * are met:
   39  * 1. Redistributions of source code must retain the above copyright
   40  *    notice, this list of conditions and the following disclaimer.
   41  * 2. Redistributions in binary form must reproduce the above copyright
   42  *    notice, this list of conditions and the following disclaimer in the
   43  *    documentation and/or other materials provided with the distribution.
   44  * 3. Neither the name of the Intel Corporation nor the names of its contributors
   45  *    may be used to endorse or promote products derived from this software
   46  *    without specific prior written permission.
   47  * 
   48  * 
   49  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
   50  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
   53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   59  * SUCH DAMAGE.
   60  */
   61 
   62 #ifndef ARM_XSCALE_IF_NPEREG_H
   63 #define ARM_XSCALE_IF_NPEREG_H
   64 
   65 /*
   66  * NPE/NPE tx/rx descriptor format.  This is just the area
   67  * shared with ucode running in the NPE; the driver-specific
   68  * state is defined in the driver.  The shared area must be
   69  * cacheline-aligned.  We allocate NPE_MAXSEG "descriptors"
   70  * per buffer; this allows us to do minimal s/g.  The number
   71  * of descriptors can be expanded but doing so uses memory
   72  * so should be done with care.
   73  *
   74  * The driver sets up buffers in uncached memory.
   75  */
   76 #define NPE_MAXSEG      3               /* empirically selected */
   77 
   78 struct npehwbuf {
   79         struct {                        /* NPE shared area, cacheline aligned */
   80                 uint32_t next;          /* phys addr of next segment */
   81                 uint32_t len;           /* buffer/segment length (bytes) */
   82                 uint32_t data;          /* phys addr of data segment */
   83                 uint32_t pad[5];        /* pad to cacheline */
   84         } ix_ne[NPE_MAXSEG];
   85 };
   86 
   87 /* NPE ID's */
   88 #define NPE_A           0
   89 #define NPE_B           1
   90 #define NPE_C           2
   91 #define NPE_MAX         (NPE_C+1)
   92 
   93 #define NPE_PORTS_MAX           2       /* logical ports */
   94 #define NPE_FRAME_SIZE_DEFAULT  1536
   95 #define NPE_FRAME_SIZE_MAX      (65536-64)
   96 #define NPE_FRAME_SIZE_MIN      64
   97 
   98 /*
   99  * Queue Manager-related definitions.
  100  *
  101  * These define the layout of 32-bit Q entries passed
  102  * between the host cpu and the NPE's.
  103  */
  104 #define NPE_QM_Q_NPE(e)         (((e)>>0)&0x3)          /* NPE ID */
  105 #define NPE_QM_Q_PORT(e)        (((e)>>3)&0x1)          /* Port ID */
  106 #define NPE_QM_Q_PRIO(e)        (((e)>>0)&0x3)          /* 802.1d priority */
  107 #define NPE_QM_Q_ADDR(e)        ((e)&0xfffffffe0)       /* phys address */
  108 
  109 /*
  110  * Host->NPE requests written to the shared mailbox.
  111  * The NPE writes the same value back as an ACK.
  112  */
  113 #define NPE_GETSTATUS           0x00    /* get firmware revision */
  114 #define NPE_SETPORTADDRESS      0x01    /* set port id and mac address */
  115 #define NPE_GETMACADDRDB        0x02    /* upload filter database */
  116 #define NPE_SETMACADDRDB        0x03    /* download filter database */
  117 #define NPE_GETSTATS            0x04    /* get statistics */
  118 #define NPE_RESETSTATS          0x05    /* reset stats + return result */
  119 #define NPE_SETMAXFRAME         0x06    /* configure max tx/rx frame lengths */
  120 #define NPE_SETRXTAGMODE        0x07    /* configure VLAN rx operating mode */
  121 #define NPE_SETDEFRXVID         0x08    /* set def VLAN tag + traffic class */
  122 #define NPE_SETRXQOSENTRY       0x0b    /* map user pri -> QoS class+rx qid */
  123 #define NPE_SETFIREWALLMODE     0x0e    /* config firewall services */
  124 #define NPE_SETLOOPBACK         0x12    /* enable/disable loopback */
  125 /* ... XXX more */
  126 
  127 #define NPE_MAC_MSGID_SHL       24
  128 #define NPE_MAC_PORTID_SHL      16
  129 
  130 /*
  131  * MAC register definitions; see section
  132  * 15.2 of the Intel Developers Manual.
  133  */
  134 #define NPE_MAC_TX_CNTRL1       0x000
  135 #define NPE_MAC_TX_CNTRL2       0x004
  136 #define NPE_MAC_RX_CNTRL1       0x010
  137 #define NPE_MAC_RX_CNTRL2       0x014
  138 #define NPE_MAC_RANDOM_SEED     0x020
  139 #define NPE_MAC_THRESH_P_EMPTY  0x030
  140 #define NPE_MAC_THRESH_P_FULL   0x038
  141 #define NPE_MAC_BUF_SIZE_TX     0x040
  142 #define NPE_MAC_TX_DEFER        0x050
  143 #define NPE_MAC_RX_DEFER        0x054
  144 #define NPE_MAC_TX_TWO_DEFER_1  0x060
  145 #define NPE_MAC_TX_TWO_DEFER_2  0x064
  146 #define NPE_MAC_SLOT_TIME       0x070
  147 #define NPE_MAC_MDIO_CMD_1      0x080
  148 #define NPE_MAC_MDIO_CMD_2      0x084
  149 #define NPE_MAC_MDIO_CMD_3      0x088
  150 #define NPE_MAC_MDIO_CMD_4      0x08c
  151 #define NPE_MAC_MDIO_STS_1      0x090
  152 #define NPE_MAC_MDIO_STS_2      0x094
  153 #define NPE_MAC_MDIO_STS_3      0x098
  154 #define NPE_MAC_MDIO_STS_4      0x09c
  155 #define NPE_MAC_ADDR_MASK_1     0x0A0
  156 #define NPE_MAC_ADDR_MASK_2     0x0A4
  157 #define NPE_MAC_ADDR_MASK_3     0x0A8
  158 #define NPE_MAC_ADDR_MASK_4     0x0AC
  159 #define NPE_MAC_ADDR_MASK_5     0x0B0
  160 #define NPE_MAC_ADDR_MASK_6     0x0B4
  161 #define NPE_MAC_ADDR_1          0x0C0
  162 #define NPE_MAC_ADDR_2          0x0C4
  163 #define NPE_MAC_ADDR_3          0x0C8
  164 #define NPE_MAC_ADDR_4          0x0CC
  165 #define NPE_MAC_ADDR_5          0x0D0
  166 #define NPE_MAC_ADDR_6          0x0D4
  167 #define NPE_MAC_INT_CLK_THRESH  0x0E0
  168 #define NPE_MAC_UNI_ADDR_1      0x0F0
  169 #define NPE_MAC_UNI_ADDR_2      0x0F4
  170 #define NPE_MAC_UNI_ADDR_3      0x0F8
  171 #define NPE_MAC_UNI_ADDR_4      0x0FC
  172 #define NPE_MAC_UNI_ADDR_5      0x100
  173 #define NPE_MAC_UNI_ADDR_6      0x104
  174 #define NPE_MAC_CORE_CNTRL      0x1FC
  175 
  176 #define NPE_MAC_ADDR_MASK(i)    (NPE_MAC_ADDR_MASK_1 + ((i)<<2))
  177 #define NPE_MAC_ADDR(i)         (NPE_MAC_ADDR_1 + ((i)<<2))
  178 #define NPE_MAC_UNI_ADDR(i)     (NPE_MAC_UNI_ADDR_1 + ((i)<<2))
  179 
  180 /*
  181  * Bit definitions
  182  */
  183 
  184 /* TX Control Register 1*/
  185 #define NPE_TX_CNTRL1_TX_EN             0x01    /* enable TX engine */
  186 #define NPE_TX_CNTRL1_DUPLEX            0x02    /* select half duplex */
  187 #define NPE_TX_CNTRL1_RETRY             0x04    /* auto-retry on collision */
  188 #define NPE_TX_CNTRL1_PAD_EN            0x08    /* pad frames <64 bytes */
  189 #define NPE_TX_CNTRL1_FCS_EN            0x10    /* append FCS */
  190 #define NPE_TX_CNTRL1_2DEFER            0x20    /* select 2-part deferral */
  191 #define NPE_TX_CNTRL1_RMII              0x40
  192 
  193 /* TX Control Register 2 */
  194 #define NPE_TX_CNTRL2_RETRIES_MASK      0xf     /* max retry count */
  195 
  196 /* RX Control Register 1 */
  197 #define NPE_RX_CNTRL1_RX_EN             0x01    /* enable RX engine */
  198 #define NPE_RX_CNTRL1_PADSTRIP_EN       0x02    /* strip frame padding */
  199 #define NPE_RX_CNTRL1_CRC_EN            0x04    /* include CRC in RX frame */
  200 #define NPE_RX_CNTRL1_PAUSE_EN          0x08    /* detect Pause frames */
  201 #define NPE_RX_CNTRL1_LOOP_EN           0x10    /* loopback tx/rx */
  202 #define NPE_RX_CNTRL1_ADDR_FLTR_EN      0x20    /* enable address filtering */
  203 #define NPE_RX_CNTRL1_RX_RUNT_EN        0x40    /* enable RX of runt frames */
  204 #define NPE_RX_CNTRL1_BCAST_DIS         0x80    /* discard broadcast frames */
  205 
  206 /* RX Control Register 2 */
  207 #define NPE_RX_CNTRL2_DEFER_EN  0x01
  208 
  209 /* Core Control Register */
  210 #define NPE_CORE_RESET                  0x01    /* MAC reset state */
  211 #define NPE_CORE_RX_FIFO_FLUSH          0x02    /* flush RX FIFO */
  212 #define NPE_CORE_TX_FIFO_FLUSH          0x04    /* flush TX FIFO */
  213 #define NPE_CORE_SEND_JAM               0x08    /* send JAM on packet RX */
  214 #define NPE_CORE_MDC_EN                 0x10    /* IXP42X drives MDC clock */
  215 
  216 /*
  217  * Stat block returned by NPE with NPE_GETSTATS msg.
  218  */
  219 struct npestats {
  220         uint32_t dot3StatsAlignmentErrors;
  221         uint32_t dot3StatsFCSErrors;
  222         uint32_t dot3StatsInternalMacReceiveErrors;
  223         uint32_t RxOverrunDiscards;
  224         uint32_t RxLearnedEntryDiscards;
  225         uint32_t RxLargeFramesDiscards;
  226         uint32_t RxSTPBlockedDiscards;
  227         uint32_t RxVLANTypeFilterDiscards;
  228         uint32_t RxVLANIdFilterDiscards;
  229         uint32_t RxInvalidSourceDiscards;
  230         uint32_t RxBlackListDiscards;
  231         uint32_t RxWhiteListDiscards;
  232         uint32_t RxUnderflowEntryDiscards;
  233         uint32_t dot3StatsSingleCollisionFrames;
  234         uint32_t dot3StatsMultipleCollisionFrames;
  235         uint32_t dot3StatsDeferredTransmissions;
  236         uint32_t dot3StatsLateCollisions;
  237         uint32_t dot3StatsExcessiveCollisions;
  238         uint32_t dot3StatsInternalMacTransmitErrors;
  239         uint32_t dot3StatsCarrierSenseErrors;
  240         uint32_t TxLargeFrameDiscards;
  241         uint32_t TxVLANIdFilterDiscards;
  242 };
  243 
  244 /*
  245  * Default values
  246  */
  247 #define NPE_MAC_INT_CLK_THRESH_DEFAULT  0x1
  248 
  249 #define NPE_MAC_RESET_DELAY    1
  250 
  251 /* This value applies to RMII */
  252 #define NPE_MAC_SLOT_TIME_RMII_DEFAULT  0xFF
  253 
  254 /*
  255  * MII definitions - these have been verified against the LXT971 and LXT972 PHYs
  256  */
  257 #define NPE_MII_REG_SHL         16
  258 #define NPE_MII_ADDR_SHL        21
  259 
  260 /* NB: shorthands for mii bus mdio routines */
  261 #define NPE_MAC_MDIO_CMD        NPE_MAC_MDIO_CMD_1
  262 #define NPE_MAC_MDIO_STS        NPE_MAC_MDIO_STS_1
  263  
  264 #define NPE_MII_GO                  (1<<31)
  265 #define NPE_MII_WRITE               (1<<26)
  266 #define NPE_MII_TIMEOUT_10TH_SECS        5    
  267 #define NPE_MII_10TH_SEC_IN_MILLIS     100
  268 #define NPE_MII_READ_FAIL           (1<<31)
  269  
  270 #define NPE_MII_PHY_DEF_DELAY   300     /* max delay before link up, etc. */
  271 #define NPE_MII_PHY_NO_DELAY    0x0     /* do not delay */
  272 #define NPE_MII_PHY_NULL        0xff    /* PHY is not present */
  273 #define NPE_MII_PHY_DEF_ADDR    0x0     /* default PHY's logical address */
  274 
  275 /* Register definition */  
  276 #define NPE_MII_CTRL_REG        0x0     /* Control Register */
  277 #define NPE_MII_STAT_REG        0x1     /* Status Register */
  278 #define NPE_MII_PHY_ID1_REG     0x2     /* PHY identifier 1 Register */
  279 #define NPE_MII_PHY_ID2_REG     0x3     /* PHY identifier 2 Register */
  280 #define NPE_MII_AN_ADS_REG      0x4     /* Auto-Negotiation       */
  281                                         /* Advertisement Register */
  282 #define NPE_MII_AN_PRTN_REG     0x5     /* Auto-Negotiation         */
  283                                         /* partner ability Register */
  284 #define NPE_MII_AN_EXP_REG      0x6     /* Auto-Negotiation   */
  285                                         /* Expansion Register */
  286 #define NPE_MII_AN_NEXT_REG     0x7     /* Auto-Negotiation            */
  287                                         /* next-page transmit Register */
  288 #endif /* ARM_XSCALE_IF_NPEREG_H */

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