/* * @(#)if_hyreg.h 7.1 (Berkeley) 6/5/86 * * $Header: if_hyreg.h,v 10.0 84/06/30 19:51:34 steveg Stable $ * $Locker: $ * * Modifications from Berkeley 4.2 BSD * Copyright (c) 1983, Tektronix Inc. * All Rights Reserved * */ /* * Network Systems Corporation Hyperchannel interface * * supports A410 adapter interfaced via a DEC DR-11B, NSC PI-13 or PI-14 * (PI-14 is a PI-13 with different line drivers, software is * identical to a PI-13) * * Written by Steve Glaser, Tektronix Inc., July 1982 * * NOTE: * * DR11B code has not been fully checked out with 4.1a. * The first adapters at Tek came with DR11Bs, and the code once worked, * but those have been upgraded to PI-13s. */ /* * The HYPERchannel driver sends and receives messages formatted: * * +---------------------------------------+ --- * | | /|\ * | HYPERchannel adapter header (hy_hdr) | | * | | | * +---------------------------------------+ | * | | | * | Internet Protocol header (ip) | message proper * | | (64 bytes max) * +---------------------------------------+ | * | | | * | TCP header + user data | | * | (if it all fits here) | | * | | \|/ * +---------------------------------------+ --- * * +---------------------------------------+ --- * | | /|\ * | | | * | TCP header + user data | associated data * | | | * | | \|/ * +---------------------------------------+ --- * * If all of the datagram will fit in the message proper (including * the TCP header and user data) the entire datagram is passed in * the message proper and the associated data feature of the HYPERchannel * is not used. * * The mapping from internet addresses to HYPERchannel addresses is: * * 0 7 8 15 16 31 * +---------+---------+-----------------------+ * | network | special | HYPERchannel address | * +---------+---------+-----------------------+ * * |<------------ internet address ----------->| * * The hyperchannel address is decoded as follows: * * 0 7 8 13 14 15 * +-------------------+----------------+------+ * | adapter number | zero | port | * +-------------------+----------------+------+ * * The low 2 bits are port number (interpreted by hyperchannel hardware). * * The encoding of special bits is: * * 00 normal packet * * 01 loop this packet back to the sender at the * specified adapter (ip header source/destination addresses * swapped before sending, command bits added to tell the * remote HYPERchannel adapter debug & performance studies] * this code acts like 02 (below) if the ip destination (before * any swapping) and the destination address don't match (e.g. * this packet is being routed through a gateway) * * 02 loop this packet back to the sender at the * specified adapter, but go through the specified adapter's * IP. This is for testing IP's store and forward mechanism. * * other undefined, currently treated as normal packet * */ #define MPSIZE 64 /* "Message Proper" size */ #define MAXRETRY 4 /* * Device registers */ struct hydevice { short hyd_wcr; /* word count (negated) */ u_short hyd_bar; /* bus address bits 15-0 */ u_short hyd_csr; /* control and status */ u_short hyd_dbuf; /* data buffer */ }; /* * CSR bit layout */ #define S_ERROR 0100000 /* error */ #define S_NEX 0040000 /* non-existent memory error */ #define S_ATTN 0020000 /* attn (always zero) */ #ifdef PI13 #define S_STKINTR 0010000 /* stacked interrupt */ #else #define S_MAINT 0010000 /* maintenance (not used) */ #endif #define S_A 0004000 /* device status A (recieve data available) */ #define S_B 0002000 /* device status B (normal termination) */ #define S_C 0001000 /* device status C (abnormal termination) */ #ifdef PI13 #define S_POWEROFF 0000400 /* power off indicator */ #else #define S_CYCLE 0000400 /* cycle (not used) */ #endif #define S_READY 0000200 /* ready */ #define S_IE 0000100 /* interrupt enable */ #define S_XBA 0000060 /* bus address bit bits 17 and 16 */ #define S_CLRINT 0000014 /* clear stacked interrupt */ #define S_IATTN 0000010 /* interrupt on attention only */ #define S_WC 0000004 /* interrupt on word count == 0 only */ #define S_IATTNWC 0000000 /* interrupt on word count == 0 and attention */ #define S_BURST 0000002 /* burst mode DMA (not used) */ #define S_GO 0000001 /* go */ #define XBASHIFT 12 #define HY_CSR_BITS "\20\ \20ERROR\17NEX\16ATTN\15STKINTR\14RECV_DATA\13NORMAL\12ABNORMAL\11POWER\ \10READY\07IENABLE\06XBA17\05XBA16\04IATTN\03IWC\02BURST\01GO" /* * PI13 status conditions */ #define HYS_RECVDATA(x) (((x)->hyd_csr & S_A) != 0) /* get adapter data */ #define HYS_NORMAL(x) (((x)->hyd_csr & S_B) != 0) /* done normally */ #define HYS_ABNORMAL(x) (((x)->hyd_csr & S_C) != 0) /* done abnormally */ #define HYS_ERROR(x) (((x)->hyd_csr & S_ERROR) != 0) /* error condition */ #define HYS_DONE(x) (((x)->hyd_csr & (S_ERROR|S_B|S_C)) != 0) /* * Function Codes for the Hyperchannel Adapter * The codes are offset so they can be "or"ed into * the reg data buffer */ #define HYF_XMITMSG 0x04 /* transmit message */ #define HYF_XMITDATA 0x08 /* transmit associated data */ #define HYF_XMITLSTDATA 0x0C /* transmit last associated data */ #define HYF_XMITLOCMSG 0x10 /* transmit local message */ #define HYF_INPUTMSG 0x24 /* input message proper */ #define HYF_INPUTDATA 0x28 /* input assiciated data */ #define HYF_STATUS 0x40 /* request status */ #define HYF_DUMPREGS 0x50 /* dump extention registers */ #define HYF_MARKP0 0x60 /* mark down port 0 */ #define HYF_MARKP1 0x64 /* mark down port 1 */ #define HYF_MARKP2 0x68 /* mark down port 2 */ #define HYF_MARKP3 0x6C /* mark down port 3 */ #define HYF_MP0RR 0x70 /* mark down port 0 and reroute messages */ #define HYF_MP1RR 0x74 /* mark down port 1 and reroute messages */ #define HYF_MP2RR 0x78 /* mark down port 2 and reroute messages */ #define HYF_MP3RR 0x7C /* mark down port 3 and reroute messages */ #define HYF_RSTATS 0xA0 /* read statistics */ #define HYF_RCSTATS 0xA4 /* read and clear statistics */ #define HYF_SETTEST 0xC0 /* enable test operations *set test mode) */ #define HYF_SADDR_LEN 0xC4 /* test mode: set address and length */ #define HYF_WBUFF 0xC8 /* test mode: write buffer */ #define HYF_RBUFF 0xCC /* test mode: read buffer */ #define HYF_CLRADAPTER 0xE0 /* clear adapter */ #define HYF_END_OP 0xE4 /* end operation */ #define HYF_CLRWFMSG 0xE6 /* clear wait for mwssage */ #define HYF_WAITFORMSG 0xE8 /* wait for message */