/* if_hyreg.h 4.2 83/02/21 */ /* * 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. */ #define PI13 1 /* PI13 vs. DR11B device depandant code */ #ifndef HYLOG #define HYLOG 1 /* enable logging of errors */ #endif /* * Structure of a HYPERchannel adapter header */ struct hy_hdr { short hyh_ctl; /* control */ short hyh_access; /* access code */ union { /* to/from addresses */ short hyh_addr; /* full address */ char hyh_baddr[2]; /* adapter/port number from address */ } hyhu_to, hyhu_from; #define hyh_to hyhu_to.hyh_addr #define hyh_from hyhu_from.hyh_addr #define hyh_to_adapter hyhu_to.hyh_baddr[0] #define hyh_to_port hyhu_to.hyh_baddr[1] #define hyh_from_adapter hyhu_from.hyh_baddr[0] #define hyh_from_port hyhu_from.hyh_baddr[1] short hyh_param; /* parameter (for loopback) */ char hyh_type; /* record type */ char hyh_off; /* offset from end of hy_hdr to ip data */ }; /* * Structure of a HYPERchannel message header (from software) */ struct hym_data { short hymd_mplen; /* message proper length, if associated data */ }; struct hym_hdr { struct hym_data hym_d; #define hym_mplen hym_d.hymd_mplen struct hy_hdr hym_hdr; /* hardware header, MUST BE LAST */ }; /* * HYPERchannel header word control bits */ #define H_XTRUNKS 0x00F0 /* transmit trunks */ #define H_RTRUNKS 0x000F /* remote trunks to transmit on for loopback */ #define H_ASSOC 0x0100 /* has associated data */ #define H_LOOPBK 0x00FF /* loopback command */ /* * Structure of Statistics Record (counters) */ struct hy_stat { u_long hyc_msgcnt; /* # messages transmitted */ u_long hyc_dbcnt; /* # data buffers transmitted */ u_long hyc_tbusy; /* # available trunks busy */ u_long hyc_hwret; /* # hardware retransmits */ u_long hyc_crcbad; /* # crc errors on trunk */ u_long hyc_mcret; /* # microcode retransmits */ u_long hyc_tdabort; /* # trunk driver aborts */ u_char hyc_atype[3]; /* adapter type and revision level */ u_char hyc_uaddr; /* adapter unit number */ }; /* * Structure of the Status Record */ struct hy_status { u_char hys_gen_status; /* general status byte */ u_char hys_last_fcn; /* last function code issued */ u_char hys_resp_trunk; /* trunk response byte */ u_char hys_status_trunk; /* trunk status byte */ u_char hys_recd_resp; /* recieved response byte */ u_char hys_error; /* error code */ u_char hys_caddr; /* compressed addr of 1st msg on chain */ u_char hys_pad; /* not used */ }; /* * Get port number from status record */ #define PORTNUM(p) (((p)->hys_gen_status >> 6) & 0x03) /* * 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 */ /* * Hyperchannel record types */ #define HYLINK_IP 0 /* Internet Protocol Packet */ #ifdef HYLOG #define HYL_SIZE 16*1024 struct hy_log { struct hy_log *hyl_self; u_char hyl_enable; /* logging enabled? */ u_char hyl_onerr; /* state to enter on error */ u_char *hyl_eptr; /* &hy_log.hyl_buf[HYL_SIZE] */ u_char *hyl_ptr; /* pointer into hyl_buf */ u_char hyl_buf[HYL_SIZE]; /* log buffer space */ }; #define HYL_NOP 0 #define HYL_UP 1 /* markup */ #define HYL_STATUS 2 /* status results (struct hy_status) */ #define HYL_STATISTICS 3 /* statistics (struct hy_stat) */ #define HYL_XMIT 4 /* packed being send (struct hym_hdr) */ #define HYL_RECV 5 /* recieved packet (short len; struct hy_hdr) */ #define HYL_CMD 6 /* cmd issued (uchar cmd, state; short count) */ #define HYL_INT 7 /* interrupt (short csr, wcr) */ #define HYL_DISABLED 0 /* logging disabled */ #define HYL_CONTINUOUS 1 /* continuous logging */ #define HYL_CAUGHT1 2 /* one buffer full captured */ #define HYL_CATCH1 3 /* one buffer full being captured */ #define HYL_CAUGHTSTATUS 4 /* one buffer of status captured */ #define HYL_CATCHSTATUS 5 /* one buffer fill of status being captured */ #ifdef KERNEL struct hy_log hy_log; #endif #endif