294 lines
11 KiB
C
294 lines
11 KiB
C
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/****************************************************************************
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******* *******
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******* P H B H E A D E R *******
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******* *******
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****************************************************************************
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Author : Ian Nandhra, Jeremy Rolls
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Date :
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*
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* (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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Version : 0.01
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Mods
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----------------------------------------------------------------------------
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Date By Description
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----------------------------------------------------------------------------
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***************************************************************************/
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#ifndef _phb_h
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#define _phb_h 1
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#ifdef SCCS_LABELS
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#ifndef lint
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/* static char *_rio_phb_h_sccs = "@(#)phb.h 1.12"; */
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#endif
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#endif
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/*************************************************
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* Set the LIMIT values.
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************************************************/
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#ifdef RTA
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#define RX_LIMIT (ushort) 3
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#endif
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#ifdef HOST
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#define RX_LIMIT (ushort) 1
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#endif
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/*************************************************
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* Handshake asserted. Deasserted by the LTT(s)
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************************************************/
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#define PHB_HANDSHAKE_SET ((ushort) 0x001) /* Set by LRT */
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#define PHB_HANDSHAKE_RESET ((ushort) 0x002) /* Set by ISR / driver */
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#define PHB_HANDSHAKE_FLAGS (PHB_HANDSHAKE_RESET | PHB_HANDSHAKE_SET)
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/* Reset by ltt */
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/*************************************************
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* Maximum number of PHB's
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************************************************/
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#if defined (HOST) || defined (INKERNEL)
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#define MAX_PHB ((ushort) 128) /* range 0-127 */
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#else
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#define MAX_PHB ((ushort) 8) /* range 0-7 */
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#endif
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/*************************************************
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* Defines for the mode fields
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************************************************/
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#define TXPKT_INCOMPLETE 0x0001 /* Previous tx packet not completed */
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#define TXINTR_ENABLED 0x0002 /* Tx interrupt is enabled */
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#define TX_TAB3 0x0004 /* TAB3 mode */
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#define TX_OCRNL 0x0008 /* OCRNL mode */
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#define TX_ONLCR 0x0010 /* ONLCR mode */
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#define TX_SENDSPACES 0x0020 /* Send n spaces command needs
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completing */
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#define TX_SENDNULL 0x0040 /* Escaping NULL needs completing */
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#define TX_SENDLF 0x0080 /* LF -> CR LF needs completing */
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#define TX_PARALLELBUG 0x0100 /* CD1400 LF -> CR LF bug on parallel
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port */
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#define TX_HANGOVER (TX_SENDSPACES | TX_SENDLF | TX_SENDNULL)
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#define TX_DTRFLOW 0x0200 /* DTR tx flow control */
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#define TX_DTRFLOWED 0x0400 /* DTR is low - don't allow more data
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into the FIFO */
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#define TX_DATAINFIFO 0x0800 /* There is data in the FIFO */
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#define TX_BUSY 0x1000 /* Data in FIFO, shift or holding regs */
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#define RX_SPARE 0x0001 /* SPARE */
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#define RXINTR_ENABLED 0x0002 /* Rx interrupt enabled */
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#define RX_ICRNL 0x0008 /* ICRNL mode */
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#define RX_INLCR 0x0010 /* INLCR mode */
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#define RX_IGNCR 0x0020 /* IGNCR mode */
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#define RX_CTSFLOW 0x0040 /* CTSFLOW enabled */
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#define RX_IXOFF 0x0080 /* IXOFF enabled */
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#define RX_CTSFLOWED 0x0100 /* CTSFLOW and CTS dropped */
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#define RX_IXOFFED 0x0200 /* IXOFF and xoff sent */
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#define RX_BUFFERED 0x0400 /* Try and pass on complete packets */
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#define PORT_ISOPEN 0x0001 /* Port open? */
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#define PORT_HUPCL 0x0002 /* Hangup on close? */
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#define PORT_MOPENPEND 0x0004 /* Modem open pending */
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#define PORT_ISPARALLEL 0x0008 /* Parallel port */
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#define PORT_BREAK 0x0010 /* Port on break */
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#define PORT_STATUSPEND 0x0020 /* Status packet pending */
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#define PORT_BREAKPEND 0x0040 /* Break packet pending */
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#define PORT_MODEMPEND 0x0080 /* Modem status packet pending */
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#define PORT_PARALLELBUG 0x0100 /* CD1400 LF -> CR LF bug on parallel
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port */
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#define PORT_FULLMODEM 0x0200 /* Full modem signals */
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#define PORT_RJ45 0x0400 /* RJ45 connector - no RI signal */
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#define PORT_RESTRICTED 0x0600 /* Restricted connector - no RI / DTR */
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#define PORT_MODEMBITS 0x0600 /* Mask for modem fields */
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#define PORT_WCLOSE 0x0800 /* Waiting for close */
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#define PORT_HANDSHAKEFIX 0x1000 /* Port has H/W flow control fix */
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#define PORT_WASPCLOSED 0x2000 /* Port closed with PCLOSE */
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#define DUMPMODE 0x4000 /* Dump RTA mem */
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#define READ_REG 0x8000 /* Read CD1400 register */
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/**************************************************************************
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* PHB Structure
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* A few words.
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*
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* Normally Packets are added to the end of the list and removed from
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* the start. The pointer tx_add points to a SPACE to put a Packet.
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* The pointer tx_remove points to the next Packet to remove
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*************************************************************************/
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#ifndef INKERNEL
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#define src_unit u2.s2.unit
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#define src_port u2.s2.port
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#define dest_unit u1.s1.unit
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#define dest_port u1.s1.port
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#endif
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#ifdef HOST
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#define tx_start u3.s1.tx_start_ptr_ptr
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#define tx_add u3.s1.tx_add_ptr_ptr
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#define tx_end u3.s1.tx_end_ptr_ptr
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#define tx_remove u3.s1.tx_remove_ptr_ptr
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#define rx_start u4.s1.rx_start_ptr_ptr
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#define rx_add u4.s1.rx_add_ptr_ptr
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#define rx_end u4.s1.rx_end_ptr_ptr
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#define rx_remove u4.s1.rx_remove_ptr_ptr
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#endif
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typedef struct PHB PHB ;
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struct PHB {
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#ifdef RTA
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ushort port;
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#endif
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#ifdef INKERNEL
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WORD source;
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#else
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union
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{
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ushort source; /* Complete source */
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struct
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{
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unsigned char unit; /* Source unit */
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unsigned char port; /* Source port */
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} s2;
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} u2;
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#endif
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WORD handshake ;
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WORD status ;
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NUMBER timeout ; /* Maximum of 1.9 seconds */
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WORD link ; /* Send down this link */
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#ifdef INKERNEL
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WORD destination;
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#else
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union
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{
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ushort destination; /* Complete destination */
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struct
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{
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unsigned char unit; /* Destination unit */
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unsigned char port; /* Destination port */
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} s1;
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} u1;
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#endif
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#ifdef RTA
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ushort tx_pkts_added;
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ushort tx_pkts_removed;
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Q_BUF_ptr tx_q_start ; /* Start of the Q list chain */
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short num_tx_q_bufs ; /* Number of Q buffers in the chain */
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PKT_ptr_ptr tx_add ; /* Add a new Packet here */
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Q_BUF_ptr tx_add_qb; /* Pointer to the add Q buf */
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PKT_ptr_ptr tx_add_st_qbb ; /* Pointer to start of the Q's buf */
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PKT_ptr_ptr tx_add_end_qbb ; /* Pointer to the end of the Q's buf */
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PKT_ptr_ptr tx_remove ; /* Remove a Packet here */
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Q_BUF_ptr tx_remove_qb ; /* Pointer to the remove Q buf */
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PKT_ptr_ptr tx_remove_st_qbb ; /* Pointer to the start of the Q buf */
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PKT_ptr_ptr tx_remove_end_qbb ; /* Pointer to the end of the Q buf */
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#endif
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#ifdef INKERNEL
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PKT_ptr_ptr tx_start ;
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PKT_ptr_ptr tx_end ;
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PKT_ptr_ptr tx_add ;
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PKT_ptr_ptr tx_remove ;
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#endif
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#ifdef HOST
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union
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{
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struct
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{
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PKT_ptr_ptr tx_start_ptr_ptr;
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PKT_ptr_ptr tx_end_ptr_ptr;
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PKT_ptr_ptr tx_add_ptr_ptr;
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PKT_ptr_ptr tx_remove_ptr_ptr;
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} s1;
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struct
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{
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ushort * tx_start_ptr;
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ushort * tx_end_ptr;
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ushort * tx_add_ptr;
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ushort * tx_remove_ptr;
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} s2;
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} u3;
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#endif
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#ifdef RTA
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ushort rx_pkts_added;
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ushort rx_pkts_removed;
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Q_BUF_ptr rx_q_start ; /* Start of the Q list chain */
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short num_rx_q_bufs ; /* Number of Q buffers in the chain */
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PKT_ptr_ptr rx_add ; /* Add a new Packet here */
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Q_BUF_ptr rx_add_qb ; /* Pointer to the add Q buf */
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PKT_ptr_ptr rx_add_st_qbb ; /* Pointer to start of the Q's buf */
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PKT_ptr_ptr rx_add_end_qbb ; /* Pointer to the end of the Q's buf */
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PKT_ptr_ptr rx_remove ; /* Remove a Packet here */
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Q_BUF_ptr rx_remove_qb ; /* Pointer to the remove Q buf */
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PKT_ptr_ptr rx_remove_st_qbb ; /* Pointer to the start of the Q buf */
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PKT_ptr_ptr rx_remove_end_qbb ; /* Pointer to the end of the Q buf */
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#endif
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#ifdef INKERNEL
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PKT_ptr_ptr rx_start ;
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PKT_ptr_ptr rx_end ;
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PKT_ptr_ptr rx_add ;
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PKT_ptr_ptr rx_remove ;
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#endif
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#ifdef HOST
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union
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{
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struct
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{
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PKT_ptr_ptr rx_start_ptr_ptr;
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PKT_ptr_ptr rx_end_ptr_ptr;
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PKT_ptr_ptr rx_add_ptr_ptr;
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PKT_ptr_ptr rx_remove_ptr_ptr;
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} s1;
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struct
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{
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ushort * rx_start_ptr;
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ushort * rx_end_ptr;
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ushort * rx_add_ptr;
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ushort * rx_remove_ptr;
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} s2;
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} u4;
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#endif
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#ifdef RTA /* some fields for the remotes */
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ushort flush_count; /* Count of write flushes */
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ushort txmode; /* Modes for tx */
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ushort rxmode; /* Modes for rx */
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ushort portmode; /* Generic modes */
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ushort column; /* TAB3 column count */
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ushort tx_subscript; /* (TX) Subscript into data field */
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ushort rx_subscript; /* (RX) Subscript into data field */
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PKT_ptr rx_incomplete; /* Hold an incomplete packet here */
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ushort modem_bits; /* Modem bits to mask */
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ushort lastModem; /* Modem control lines. */
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ushort addr; /* Address for sub commands */
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ushort MonitorTstate; /* TRUE if monitoring tstop */
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#endif
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} ;
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#endif
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/*********** end of file ***********/
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