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if_med.h
资源名称：ixp425BSP.rar　[点击查看]
上传用户：luoyougen
上传日期：2008-05-12
资源大小：23136k
文件大小：13k
源码类别：

VxWorks

开发平台：

C/C++

if_med.h：源码内容
  1. /* if_med.h - Matrix DB-ETH ethernet driver header file */
  3. /* Copyright 1984-1997 Wind River Systems, Inc. */
  4. /*
  5. modification history
  6. --------------------
  7. 02g,15jul97,spm  removed unused control field bPromisc from BSD 4.4 driver
  8. 02g,06dec96,cdp  changed ARM to DCR_ARM to avoid clash with ARM arch.
  9. 02f,22sep92,rrr  added support for c++
  10. 02e,26may92,rrr  the tree shuffle
  11. 02d,04oct91,rrr  passed through the ansification filter
  12.   -changed copyright notice
  13. 02c,05oct90,shl  added copyright notice.
  14.                  made #endif ANSI style.
  15. 02b,26jun90,hjb  upgrade to use cluster and if_subr routines;
  16.    +dab  integrated in the new distribution from Matrix.
  17. 02a,05may90,dab  cleanup of Matrix version 01g.
  18. 01a,24sep89,srm  written.
  19. */
  21. #ifndef __INCif_medh
  22. #define __INCif_medh
  24. #ifdef __cplusplus
  25. extern "C" {
  26. #endif
  28. /*
  29.  * DB_ETH definitions
  30.  */
  32. /* DB-ETH local memory map. */
  34. #define  dbeth_NIC_MEM                   0x00000
  35. #define  dbeth_DBETH_CPU_BFR             0x10000
  36. #define  dbeth_ETH_ADDR_ROM              0x20000
  37. #define  dbeth_NIC_ADDR                  0x30000
  39. /* transmit and receive buffer parameters */
  41. #define  dbeth_NIC_MEM_SIZE  0x10000
  42. #define  dbeth_NIC_RECV_BFR  (dbeth_NIC_MEM+0)
  43. #define  dbeth_NIC_RECV_BFR_SIZE ((dbeth_NIC_MEM_SIZE*7)/8)
  44. #define  dbeth_NIC_RECV_BFR_END  (dbeth_NIC_RECV_BFR+dbeth_NIC_RECV_BFR_SIZE)
  45. #define  dbeth_NIC_XMIT_BFR  (dbeth_NIC_MEM+dbeth_NIC_RECV_BFR_SIZE)
  46. #define  dbeth_NIC_XMIT_BFR_SIZE (dbeth_NIC_MEM_SIZE-dbeth_NIC_RECV_BFR_SIZE)
  48. /*
  49.  * NIC definitions
  50.  */
  52. #define  nic_PAGE_SIZE               256
  53. #define  nic_CPU_TO_NIC_ADRS(Adrs)   ((u_char)((u_long)Adrs >> 8))
  55. /*
  56.  * NIC received packet header.
  57.  */
  59. typedef struct
  60.     {
  61.     u_char nextPkt;
  62.     u_char recvStatus;
  63.     u_char byteCntL;
  64.     u_char byteCntH;
  65.     struct ether_header eh;
  66.     } nic_RecvHdr_s;
  68. /*
  69.  * All NIC registers are accessable at odd byte locations.
  70.  */
  72. typedef struct
  73.     {
  74.     u_char pad;      /* pad even (most significant) byte */
  75.     u_char reg;      /* the actual NIC register          */
  76.     } NIC_REG;
  78. typedef union
  79.     {
  80.     NIC_REG reg [16];
  81.     struct
  82. {
  83. NIC_REG cr;
  84. NIC_REG pstart;
  85. NIC_REG pstop;
  86. NIC_REG bnry;
  87. NIC_REG tpsr;
  88. NIC_REG tbcr0;
  89. NIC_REG tbcr1;
  90. NIC_REG isr;
  91. NIC_REG rsar0;
  92. NIC_REG rsar1;
  93. NIC_REG rbcr0;
  94. NIC_REG rbcr1;
  95. NIC_REG rcr;
  96. NIC_REG tcr;
  97. NIC_REG dcr;
  98. NIC_REG imr;
  99. } nic_pg0;
  100.     struct
  101. {
  102. NIC_REG cr;
  103. NIC_REG clda0;
  104. NIC_REG clda1;
  105. NIC_REG bnry;
  106. NIC_REG tsr;
  107. NIC_REG ncr;
  108. NIC_REG fifo;
  109. NIC_REG isr;
  110. NIC_REG crda0;
  111. NIC_REG crda1;
  112. NIC_REG reserved0;
  113. NIC_REG reserved1;
  114. NIC_REG rsr;
  115. NIC_REG cntr0;
  116. NIC_REG cntr1;
  117. NIC_REG cntr2;
  118. } nic_pg0_read;
  119.     struct
  120. {
  121. NIC_REG cr;
  122. NIC_REG par0;
  123. NIC_REG par1;
  124. NIC_REG par2;
  125. NIC_REG par3;
  126. NIC_REG par4;
  127. NIC_REG par5;
  128. NIC_REG curr;
  129. NIC_REG mar0;
  130. NIC_REG mar1;
  131. NIC_REG mar2;
  132. NIC_REG mar3;
  133. NIC_REG mar4;
  134. NIC_REG mar5;
  135. NIC_REG mar6;
  136. NIC_REG mar7;
  137. } nic_pg1;
  138.     struct
  139. {
  140. NIC_REG cr;
  141. NIC_REG clda0;
  142. NIC_REG clda1;
  143. NIC_REG rnpp;
  144. NIC_REG res;
  145. NIC_REG lnpp;
  146. NIC_REG upper;
  147. NIC_REG lower;
  148. NIC_REG reg[4];          /* reserved */
  149. NIC_REG rcr_read;
  150. NIC_REG tcr_read;
  151. NIC_REG dcr_read;
  152. NIC_REG imr_read;
  153. } nic_pg2;
  154.     } NIC_DEVICE;
  156. #define Cr nic_pg0.cr.reg
  157. #define Pstart nic_pg0.pstart.reg
  158. #define Pstop nic_pg0.pstop.reg
  159. #define Bnry nic_pg0.bnry.reg
  160. #define Tpsr nic_pg0.tpsr.reg
  161. #define Tsr nic_pg0_read.tsr.reg
  162. #define Tbcr0 nic_pg0.tbcr0.reg
  163. #define Tbcr1 nic_pg0.tbcr1.reg
  164. #define Isr nic_pg0.isr.reg
  165. #define Rsar0 nic_pg0.rsar0.reg
  166. #define Rsar1 nic_pg0.rsar1.reg
  167. #define Rbcr0 nic_pg0.rbcr0.reg
  168. #define Rbcr1 nic_pg0.rbcr1.reg
  169. #define Rcr nic_pg0.rcr.reg
  170. #define Tcr nic_pg0.tcr.reg
  171. #define FaeErr nic_pg0_read.cntr0.reg
  172. #define Dcr nic_pg0.dcr.reg
  173. #define CrcErr nic_pg0_read.cntr1.reg
  174. #define Imr nic_pg0.imr.reg
  175. #define MspErr nic_pg0_read.cntr2.reg
  177. #define Par0 nic_pg1.par0.reg
  178. #define Par1 nic_pg1.par1.reg
  179. #define Par2 nic_pg1.par2.reg
  180. #define Par3 nic_pg1.par3.reg
  181. #define Par4 nic_pg1.par4.reg
  182. #define Par5 nic_pg1.par5.reg
  183. #define Curr nic_pg1.curr.reg
  185. #define ImrRD nic_pg2.imr_read.reg
  187. /*
  188.  * CR Register bits - Command Register
  189.  */
  191. #define STP 0x1
  192. #define STA 0x2
  193. #define TXP 0x4
  194. #define RREAD 0x8
  195. #define RWRITE 0x10
  196. #define SPKT 0x18
  197. #define ABORT 0x20
  198. #define RPAGE0 0x00
  199. #define RPAGE1 0x40
  200. #define RPAGE2 0x80
  202. #define nic_XMTR_BUSY  0x4
  204. /*
  205.  * ISR Register - Interrupt Status Register
  206.  */
  208. #define PRX 0x1
  209. #define PTX 0x2
  210. #define RXE 0x4
  211. #define TXE 0x8
  212. #define OVW 0x10
  213. #define CNT 0x20
  214. #define RDC 0x40
  215. #define RST 0x80
  217. #define  nic_STOP_MODE    RST
  219. /*
  220.  * IMR - Interrupt Mask Register - 0F (write-only)
  221.  */
  223. #define  PRXE 0x1
  224. #define  PTXE 0x2
  225. #define  RXEE 0x4
  226. #define  TXEE 0x8
  227. #define  OVWE 0x10
  228. #define  CNTE 0x20
  229. #define  RDCE 0x40
  231. #define  nic_PKT_RECV_NO_ERRORS         PRXE
  232. #define  nic_PKT_RECV_ERROR             RXEE
  233. #define  nic_PKT_XMIT_NO_ERRORS         PTXE
  234. #define  nic_PKT_XMIT_ERROR             TXEE
  235. #define  nic_RECV_BFR_OVF_WARN          OVWE
  236. #define  nic_NET_STATS_CNTR_OVF         CNTE
  238. /*
  239.  * DCR
  240.  */
  242. #define WTS 0x1        /* word-wide DMA transfers        */
  243. #define BOS 0x2        /* 680x0-style byte ordering      */
  244. #define LAS 0x4        /* remote DMA long address select */
  245. #define BMS 0x8        /* transfer FIFO threshold bytes  */
  246. #define DCR_ARM 0x10       /* autoinitialize remote DMA      */
  247. #define FT1 0x00       /* FIFO threshold, 1 word         */
  248. #define FT2   0x20
  249. #define FT4   0x40
  250. #define FT6    0x60
  252. /*
  253.  * TCR - Transmit Configuration Register - 0D ( write-only)
  254.  */
  256. #define CRC  0x1
  257. #define MODE0 0x0
  258. #define MODE1 0x2
  259. #define MODE2 0x4
  260. #define MODE3 0x6
  261. #define ATD 0x8
  262. #define OFST 0x10
  264. #define  nic_NORMAL_XMIT_CTRL     MODE0
  266. /*
  267.  * TSR
  268.  */
  270. #define TPTX 0x1
  271. #define COL 0x4
  272. #define ABT 0x8
  273. #define CRS 0x10
  274. #define FU 0x20
  275. #define CDH 0x40
  276. #define OWC 0x80
  278. /*
  279.  * RCR
  280.  */
  282. #define SEP 0x1
  283. #define AR 0x2
  284. #define AB 0x4
  285. #define AM 0x8
  286. #define PRO 0x10
  287. #define MON 0x20
  289. /*
  290.  * RSR
  291.  */
  293. #define PRX 0x1
  294. #define CRCR 0x2
  295. #define FAE 0x4
  296. #define FO 0x8
  297. #define MPA 0x10
  298. #define PHY 0x20
  299. #define DIS 0x40
  300. #define DFR 0x80
  302. #define nic_RECV_NO_ERROR  PRX
  303. #define nic_RCVR_DISABLED  DIS
  304. #define nic_RCVR_DEFERRING DFR
  306. #define  NNIC            1    /* max number of nic controllers */
  308. /*
  309.  * Overflow buffer. This buffer is used when received packets are
  310.  * "wrapped around" in the receive buffer ring by the NIC.
  311.  * Type nic_RecvHdr_s includes "struct ether_header".
  312.  */
  314. #define  OVERFLOW_BFR_SIZE (sizeof (nic_RecvHdr_s) + ETHERMTU)
  316. /* driver statistics, for debug and performance monitoring */
  318. typedef struct
  319.     {
  320.     u_long   noXmitBfrs;
  321.     u_long   intrCount;
  322.     u_long   PRX_intrCount;
  323.     u_long   PTX_intrCount;
  324.     u_long   RXE_intrCount;
  325.     u_long   TXE_intrCount;
  326.     u_long   OVW_intrCount;
  327.     u_long   CNT_intrCount;
  328.     u_long   carrierLost;    /* transmission error, not aborted           */
  329.     u_long   outOfWndColl;   /* transmission error, not aborted           */
  330.     u_long   FIFO_UdrRun;    /* fatal transmission error, aborted         */
  331.     u_long   excessColl;     /* fatal transmission error, aborted         */
  332.     u_long   frameAlign;     /* frame alignment error on packet reception */
  333.     u_long   misMatchCRC;    /* CRC error on packet reception             */
  334.     u_long   missedPkt;      /* packet missed, no receive buffers avail.  */
  335.     } med_Stats_s;
  337. /*_____________________________________________________________________
  338.  * Transmit Queue (xmitQ) definition.
  339.  *_____________________________________________________________________
  340.  *
  341.  *  Transmit Queue - showing transmit buffer control block (xmitBCB_s)
  342.  *                   structure
  343.  *
  344.  *    +-------------------------------------------------------+
  345.  *    |                                                       |
  346.  *    |   +-----------+    +-----------+  //   +-----------+  |
  347.  *    +-->|    next   |--->|    next   |--\-->|    next   |--+
  348.  *        +-----------+    +-----------+  //   +-----------+
  349.  *        |  bPktRdy  |    |  bPktRdy  |  \   |  bPktRdy  |
  350.  *        +-----------+    +-----------+  //   +-----------+
  351.  *        |   pktLen  |    |   pktLen  |  \   |   pktLen  |
  352.  *        +-----------+    +-----------+  //   +-----------+
  353.  *        |  pPktBfr  |    |  pPktBfr  |  \   |   pPktBfr |
  354.  *        +-----------+    +-----------+  //   +-----------+
  355.  *              |                |                   |
  356.  *              |                |                   |
  357.  *          +---+                |                   |
  358.  *          |    +---------------+                   |
  359.  *          |    |                                   |
  360.  *          |    |                                   |
  361.  *          |    |        NIC accessable memory      |
  362.  *          |    |   +----------------------------+  |  <----+
  363.  *          |    |   |                            |  |       |
  364.  *          +------->|      packet buffer 0       |  |       |
  365.  *               |   |                            |  |       |
  366.  *               |   +----------------------------+  |  <----+
  367.  *               |   |                            |  |       |
  368.  *               +-->|      packet buffer 1       |  |       |- NIC page
  369.  *                   |                            |  |       |  boundaries
  370.  *                   +----------------------------+  |  <----+
  371.  *                   |                            |  |       |
  372.  *                  //////////////////////
  373.  *                   |                            |  |       |
  374.  *                   +----------------------------+  |  <----+
  375.  *                   |                            |  |
  376.  *                   |      packet buffer n       |<-+
  377.  *                   |                            |
  378.  *                   +----------------------------+
  379.  *
  380.  *
  381.  *  Transmit Queue - showing buffer indexing
  382.  *
  383.  *    +-----------------------------------------------------------+
  384.  *    |                                                           |
  385.  *    |   +---+    +---+    +---+    +---+    +---+  //    +---+  |
  386.  *    |   |   |    |###|    |###|    |###|    |   |  \    |   |  |
  387.  *    +-->|   +--->|###+--->|###+--->|###+--->|   +--// -->|   |--+
  388.  *        |   |    |###|    |###|    |###|    |   |  \    |   |
  389.  *        +---+    +---+    +---+    +---+    +---+  //    +---+
  390.  *                   |                          |
  391.  *                   |                          |
  392.  *                   +-- head                   +-- tail
  393.  *
  394.  *  tail (tail buffer index)
  395.  *    Unless the xmitQ is full, Tail always indexes the next empty
  396.  *    buffer into which a packet to be transmitted may be written.
  397.  *
  398.  *  head (head buffer index)
  399.  *    Unless the xmitQ is empty, Head always indexes the next data
  400.  *    buffer (containing a packet) to be transmitted by the NIC.
  401.  *___________________________________________________________________*/
  403. /*
  404.  * A 'lock' is used as the mutual exclusion mechanism for the NIC transmitter.
  405.  */
  406. typedef unsigned long lockID_t;
  408. #define LOCKED ((lockID_t) 0)
  409. #define UNLOCKED ((lockID_t) 1)
  411. /* Transmit Buffer Control Blocks are referenced by an index.  */
  413. typedef unsigned long  XBIdx_t;       /* Transmit Buffer Index */
  415. /* Transmit Buffer Control Block (xmitBCB) */
  417. typedef struct
  418.     {
  419.     XBIdx_t      next;           /* index of the next xmitBfrContolBlock */
  420.     BOOL         bPktRdy;        /* data is available in packet buffer   */
  421.     u_short      pktLen;
  422.     u_short      dummy;          /* pad to longword */
  423.     char        *pPktBfr;
  424.     } xmitBCB_s;
  426. /*
  427.  * Calculate the maximum transmit buffer size, and round-up to the nearest
  428.  * NIC page size...
  429.  */
  430. #define  XMIT_BFR_SIZE         (((ETHERMTU + sizeof (struct ether_header)) 
  431.                                 + (nic_PAGE_SIZE - 1))                      
  432.                                 & ~(nic_PAGE_SIZE - 1))
  434. #define  NUM_XMIT_BFRS         (dbeth_NIC_XMIT_BFR_SIZE / XMIT_BFR_SIZE)
  436. /* Transmit Queue Control Block (xmitQCB). */
  438. typedef struct
  439.     {
  440.     XBIdx_t        head;
  441.     XBIdx_t        tail;
  442.     BOOL           bEmpty;
  443.     BOOL           bFull;
  444.     lockID_t       lockNIC_Xmtr;
  445.     xmitBCB_s      xmitBCB [NUM_XMIT_BFRS];
  446.     } xmitQCB_s;
  449. /*
  450.  * MED definitions
  451.  */
  453. /*
  454.  * Ethernet software status per interface.
  455.  *
  456.  * Each interface is referenced by a network interface structure,
  457.  * es_if, which the routing code uses to locate the interface.
  458.  * This structure contains the output queue for the interface, its address, ...
  459.  */
  461. struct med_softc
  462.     {
  463.     struct arpcom  es_ac;         /* common ethernet structures               */
  464.     NIC_DEVICE    *nicAddr;       /* address of nic Chip                      */
  465.     int            nicIntLevel;   /* interrupt level                          */
  466.     int            nicIntVec;     /* interrupt vector                         */
  467. #ifdef BSD43_DRIVER
  468.     BOOL           bPromisc;      /* if TRUE, NIC retrieves all packets       */
  469. #endif
  470.     nic_RecvHdr_s *pOvfRecvBfr;   /* buffer for wrapped receive packets       */
  471.     BOOL           bxmitBfrBusy;  /* for initial version, single xmit buffer  */
  472.     BOOL           bRecvBfrOvfl;  /* when TRUE, receive packets not processed */
  473.     BOOL           bFirstInit;    /* TRUE when NIC/driver first initialized   */
  474.     xmitQCB_s      xmitQCB;       /* transmit queue control block             */
  475.     u_char         pktNextToRead; /* next received packet to read             */
  476.     u_char         currentIMR;    /* NIC IMR shadow register                  */
  477.     };
  479. #define es_if es_ac.ac_if     /* network-visible interface */
  480. #define es_enaddr       es_ac.ac_enaddr /* hardware ethernet address */
  482. #ifdef __cplusplus
  483. }
  484. #endif
  486. #endif /* __INCif_medh */