1 /**************************************************************************** 2 ******* ******* 3 ******* L I N K 4 ******* ******* 5 **************************************************************************** 6 7 Author : Ian Nandhra / Jeremy Rolls 8 Date : 9 10 * 11 * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or 16 * (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 26 27 Version : 0.01 28 29 30 Mods 31 ---------------------------------------------------------------------------- 32 Date By Description 33 ---------------------------------------------------------------------------- 34 35 ***************************************************************************/ 36 37 #ifndef _link_h 38 #define _link_h 1 39 40 #ifndef lint 41 #ifdef SCCS_LABELS 42 /* static char *_rio_link_h_sccs = "@(#)link.h 1.15"; */ 43 #endif 44 #endif 45 46 47 48 /************************************************* 49 * Define the Link Status stuff 50 ************************************************/ 51 #define LRT_ACTIVE ((ushort) 0x01) 52 #define LRT_SPARE1 ((ushort) 0x02) 53 #define INTRO_RCVD ((ushort) 0x04) 54 #define FORCED_DISCONNECT ((ushort) 0x08) 55 #define LRT_SPARE2 ((ushort) 0x80) 56 57 #define TOP_OF_RTA_RAM ((ushort) 0x7000) 58 #define HOST_SERIAL_POINTER (unsigned char **) (TOP_OF_RTA_RAM - 2 * sizeof (ushort)) 59 60 /* Flags for ltt_status */ 61 #define WAITING_ACK (ushort) 0x0001 62 #define DATA_SENT (ushort) 0x0002 63 #define WAITING_RUP (ushort) 0x0004 64 #define WAITING_RETRY (ushort) 0x0008 65 #define WAITING_TOPOLOGY (ushort) 0x0010 66 #define SEND_SYNC (ushort) 0x0020 67 #define FOAD_THIS_LINK (ushort) 0x0040 68 #define REQUEST_SYNC (ushort) 0x0080 69 #define REMOTE_DYING (ushort) 0x0100 70 #define DIE_NOW (ushort) 0x0200 71 72 /* Boot request stuff */ 73 #define BOOT_REQUEST ((ushort) 0) /* Request for a boot */ 74 #define BOOT_ABORT ((ushort) 1) /* Abort a boot */ 75 #define BOOT_SEQUENCE ((ushort) 2) /* Packet with the number of packets 76 and load address */ 77 #define BOOT_COMPLETED ((ushort) 3) /* Boot completed */ 78 79 /* States that a link can be in */ 80 #define LINK_DISCONNECTED ((ushort) 0) /* Disconnected */ 81 #define LINK_BOOT1 ((ushort) 1) /* Trying to send 1st stage boot */ 82 #define LINK_BOOT2 ((ushort) 2) /* Trying to send 2nd stage boot */ 83 #define LINK_BOOT2WAIT ((ushort) 3) /* Waiting for selftest results */ 84 #define LINK_BOOT3 ((ushort) 4) /* Trying to send 3rd stage boots */ 85 #define LINK_SYNC ((ushort) 5) /* Syncing */ 86 87 #define LINK_INTRO ((ushort) 10) /* Introductory packet */ 88 #define LINK_SUPPLYID ((ushort) 11) /* Trying to supply an ID */ 89 #define LINK_TOPOLOGY ((ushort) 12) /* Send a topology update */ 90 #define LINK_REQUESTID ((ushort) 13) /* Waiting for an ID */ 91 #define LINK_CONNECTED ((ushort) 14) /* Connected */ 92 93 #define LINK_INTERCONNECT ((ushort) 20) /* Subnets interconnected */ 94 95 #define LINK_SPARE ((ushort) 40) 96 97 /* 98 ** Set the default timeout for link communications. 99 */ 100 #define LINKTIMEOUT (400 * MILLISECOND) 101 102 /* 103 ** LED stuff 104 */ 105 #if defined(RTA) 106 #define LED_OFF ((ushort) 0) /* LED off */ 107 #define LED_RED ((ushort) 1) /* LED Red */ 108 #define LED_GREEN ((ushort) 2) /* LED Green */ 109 #define LED_ORANGE ((ushort) 4) /* LED Orange */ 110 #define LED_1TO8_OPEN ((ushort) 1) /* Port 1->8 LED on */ 111 #define LED_9TO16_OPEN ((ushort) 2) /* Port 9->16 LED on */ 112 #define LED_SET_COLOUR(colour) (link->led = (colour)) 113 #define LED_OR_COLOUR(colour) (link->led |= (colour)) 114 #define LED_TIMEOUT(time) (link->led_timeout = RioTimePlus(RioTime(),(time))) 115 #else 116 #define LED_SET_COLOUR(colour) 117 #define LED_OR_COLOUR(colour) 118 #define LED_TIMEOUT(time) 119 #endif /* RTA */ 120 121 struct LPB { 122 WORD link_number ; /* Link Number */ 123 Channel_ptr in_ch ; /* Link In Channel */ 124 Channel_ptr out_ch ; /* Link Out Channel */ 125 #ifdef RTA 126 uchar stat_led ; /* Port open leds */ 127 uchar led ; /* True, light led! */ 128 #endif 129 BYTE attached_serial[4]; /* Attached serial number */ 130 BYTE attached_host_serial[4]; 131 /* Serial number of Host who 132 booted the other end */ 133 WORD descheduled ; /* Currently Descheduled */ 134 WORD state; /* Current state */ 135 WORD send_poll ; /* Send a Poll Packet */ 136 Process_ptr ltt_p ; /* Process Descriptor */ 137 Process_ptr lrt_p ; /* Process Descriptor */ 138 WORD lrt_status ; /* Current lrt status */ 139 WORD ltt_status ; /* Current ltt status */ 140 WORD timeout ; /* Timeout value */ 141 WORD topology; /* Topology bits */ 142 WORD mon_ltt ; 143 WORD mon_lrt ; 144 WORD WaitNoBoot ; /* Secs to hold off booting */ 145 PKT_ptr add_packet_list; /* Add packets to here */ 146 PKT_ptr remove_packet_list; /* Send packets from here */ 147 #ifdef RTA 148 #ifdef DCIRRUS 149 #define QBUFS_PER_REDIRECT (4 / PKTS_PER_BUFFER + 1) 150 #else 151 #define QBUFS_PER_REDIRECT (8 / PKTS_PER_BUFFER + 1) 152 #endif 153 PKT_ptr_ptr rd_add ; /* Add a new Packet here */ 154 Q_BUF_ptr rd_add_qb; /* Pointer to the add Q buf */ 155 PKT_ptr_ptr rd_add_st_qbb ; /* Pointer to start of the Q's buf */ 156 PKT_ptr_ptr rd_add_end_qbb ; /* Pointer to the end of the Q's buf */ 157 PKT_ptr_ptr rd_remove ; /* Remove a Packet here */ 158 Q_BUF_ptr rd_remove_qb ; /* Pointer to the remove Q buf */ 159 PKT_ptr_ptr rd_remove_st_qbb ; /* Pointer to the start of the Q buf */ 160 PKT_ptr_ptr rd_remove_end_qbb ; /* Pointer to the end of the Q buf */ 161 ushort pkts_in_q ; /* Packets in queue */ 162 #endif 163 164 Channel_ptr lrt_fail_chan ; /* Lrt's failure channel */ 165 Channel_ptr ltt_fail_chan ; /* Ltt's failure channel */ 166 167 #if defined (HOST) || defined (INKERNEL) 168 /* RUP structure for HOST to driver communications */ 169 struct RUP rup ; 170 #endif 171 struct RUP link_rup; /* RUP for the link (POLL, 172 topology etc.) */ 173 WORD attached_link ; /* Number of attached link */ 174 WORD csum_errors ; /* csum errors */ 175 WORD num_disconnects ; /* number of disconnects */ 176 WORD num_sync_rcvd ; /* # sync's received */ 177 WORD num_sync_rqst ; /* # sync requests */ 178 WORD num_tx ; /* Num pkts sent */ 179 WORD num_rx ; /* Num pkts received */ 180 WORD module_attached; /* Module tpyes of attached */ 181 WORD led_timeout; /* LED timeout */ 182 WORD first_port; /* First port to service */ 183 WORD last_port; /* Last port to service */ 184 } ; 185 186 #endif 187 188 /*********** end of file ***********/ 189