1 /* @(#)tmscpreg.h 7.1 (Berkeley) 06/05/86 */ 2 3 /* @(#)tmscpreg.h 1.1 11/2/84 84/09/25 */ 4 5 /**************************************************************** 6 * * 7 * Licensed from Digital Equipment Corporation * 8 * Copyright (c) * 9 * Digital Equipment Corporation * 10 * Maynard, Massachusetts * 11 * 1985, 1986 * 12 * All rights reserved. * 13 * * 14 * The Information in this software is subject to change * 15 * without notice and should not be construed as a commitment * 16 * by Digital Equipment Corporation. Digital makes no * 17 * representations about the suitability of this software for * 18 * any purpose. It is supplied "As Is" without expressed or * 19 * implied warranty. * 20 * * 21 * If the Regents of the University of California or its * 22 * licensees modify the software in a manner creating * 23 * diriviative copyright rights, appropriate copyright * 24 * legends may be placed on the drivative work in addition * 25 * to that set forth above. * 26 * * 27 ****************************************************************/ 28 /* 29 * TMSCP registers and structures 30 */ 31 32 struct tmscpdevice { 33 short tmscpip; /* initialization and polling */ 34 short tmscpsa; /* status and address */ 35 }; 36 37 #define TMSCP_ERR 0100000 /* error bit */ 38 #define TMSCP_STEP4 0040000 /* step 4 has started */ 39 #define TMSCP_STEP3 0020000 /* step 3 has started */ 40 #define TMSCP_STEP2 0010000 /* step 2 has started */ 41 #define TMSCP_STEP1 0004000 /* step 1 has started */ 42 #define TMSCP_NV 0002000 /* no host settable interrupt vector */ 43 #define TMSCP_QB 0001000 /* controller supports Q22 bus */ 44 #define TMSCP_DI 0000400 /* controller implements diagnostics */ 45 #define TMSCP_OD 0000200 /* port allows odd host addr's in the buffer descriptor */ 46 #define TMSCP_IE 0000200 /* interrupt enable */ 47 #define TMSCP_MP 0000100 /* port supports address mapping */ 48 #define TMSCP_LF 0000002 /* host requests last fail response packet */ 49 #define TMSCP_PI 0000001 /* host requests adapter purge interrupts */ 50 #define TMSCP_GO 0000001 /* start operation, after init */ 51 52 53 /* 54 * TMSCP Communications Area 55 */ 56 57 struct tmscpca { 58 short ca_xxx1; /* unused */ 59 char ca_xxx2; /* unused */ 60 char ca_bdp; /* BDP to purge */ 61 short ca_cmdint; /* command queue transition interrupt flag */ 62 short ca_rspint; /* response queue transition interrupt flag */ 63 long ca_rspdsc[NRSP];/* response descriptors */ 64 long ca_cmddsc[NCMD];/* command descriptors */ 65 }; 66 67 #define ca_ringbase ca_rspdsc[0] 68 69 #define TMSCP_OWN 0x80000000 /* port owns this descriptor (else host 70 owns it) */ 71 #define TMSCP_INT 0x40000000 /* allow interrupt on ring transition */ 72 73 #define TMSCP_MAP 0x80000000 /* modifier for mapped buffer descriptors */ 74 75 /* 76 * TMSCP packet info (same as MSCP) 77 */ 78 struct mscp_header { 79 short tmscp_msglen; /* length of MSCP packet */ 80 char tmscp_credits; /* low 4 bits: credits, high 4 bits: msgtype */ 81 char tmscp_vcid; /* virtual circuit id (connection id) */ 82 }; 83