/* * Copyright 2003 Digi International (www.digi.com) * Scott H Kilau * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR * PURPOSE. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!! * ************************************************************************ *** FEP Version 5 dependent definitions ************************************************************************/ #ifndef __DGAP_FEP5_H #define __DGAP_FEP5_H /************************************************************************ * FEP memory offsets ************************************************************************/ #define START 0x0004L /* Execution start address */ #define CMDBUF 0x0d10L /* Command (cm_t) structure offset */ #define CMDSTART 0x0400L /* Start of command buffer */ #define CMDMAX 0x0800L /* End of command buffer */ #define EVBUF 0x0d18L /* Event (ev_t) structure */ #define EVSTART 0x0800L /* Start of event buffer */ #define EVMAX 0x0c00L /* End of event buffer */ #define FEP5_PLUS 0x0E40 /* ASCII '5' and ASCII 'A' is here */ #define ECS_SEG 0x0E44 /* Segment of the extended channel structure */ #define LINE_SPEED 0x10 /* Offset into ECS_SEG for line speed */ /* if the fep has extended capabilities */ /* BIOS MAGIC SPOTS */ #define ERROR 0x0C14L /* BIOS error code */ #define SEQUENCE 0x0C12L /* BIOS sequence indicator */ #define POSTAREA 0x0C00L /* POST complete message area */ /* FEP MAGIC SPOTS */ #define FEPSTAT POSTAREA /* OS here when FEP comes up */ #define NCHAN 0x0C02L /* number of ports FEP sees */ #define PANIC 0x0C10L /* PANIC area for FEP */ #define KMEMEM 0x0C30L /* Memory for KME use */ #define CONFIG 0x0CD0L /* Concentrator configuration info */ #define CONFIGSIZE 0x0030 /* configuration info size */ #define DOWNREQ 0x0D00 /* Download request buffer pointer */ #define CHANBUF 0x1000L /* Async channel (bs_t) structs */ #define FEPOSSIZE 0x1FFF /* 8K FEPOS */ #define XEMPORTS 0xC02 /* * Offset in board memory where FEP5 stores * how many ports it has detected. * NOTE: FEP5 reports 64 ports when the user * has the cable in EBI OUT instead of EBI IN. */ #define FEPCLR 0x00 #define FEPMEM 0x02 #define FEPRST 0x04 #define FEPINT 0x08 #define FEPMASK 0x0e #define FEPWIN 0x80 #define LOWMEM 0x0100 #define HIGHMEM 0x7f00 #define FEPTIMEOUT 200000 #define ENABLE_INTR 0x0e04 /* Enable interrupts flag */ #define FEPPOLL_MIN 1 /* minimum of 1 millisecond */ #define FEPPOLL_MAX 20 /* maximum of 20 milliseconds */ #define FEPPOLL 0x0c26 /* Fep event poll interval */ #define IALTPIN 0x0080 /* Input flag to swap DSR <-> DCD */ /************************************************************************ * Command structure definition. ************************************************************************/ struct cm_t { volatile unsigned short cm_head; /* Command buffer head offset */ volatile unsigned short cm_tail; /* Command buffer tail offset */ volatile unsigned short cm_start; /* start offset of buffer */ volatile unsigned short cm_max; /* last offset of buffer */ }; /************************************************************************ * Event structure definition. ************************************************************************/ struct ev_t { volatile unsigned short ev_head; /* Command buffer head offset */ volatile unsigned short ev_tail; /* Command buffer tail offset */ volatile unsigned short ev_start; /* start offset of buffer */ volatile unsigned short ev_max; /* last offset of buffer */ }; /************************************************************************ * Download buffer structure. ************************************************************************/ struct downld_t { uchar dl_type; /* Header */ uchar dl_seq; /* Download sequence */ ushort dl_srev; /* Software revision number */ ushort dl_lrev; /* Low revision number */ ushort dl_hrev; /* High revision number */ ushort dl_seg; /* Start segment address */ ushort dl_size; /* Number of bytes to download */ uchar dl_data[1024]; /* Download data */ }; /************************************************************************ * Per channel buffer structure ************************************************************************ * Base Structure Entries Usage Meanings to Host * * * * W = read write R = read only * * C = changed by commands only * * U = unknown (may be changed w/o notice) * ************************************************************************/ struct bs_t { volatile unsigned short tp_jmp; /* Transmit poll jump */ volatile unsigned short tc_jmp; /* Cooked procedure jump */ volatile unsigned short ri_jmp; /* Not currently used */ volatile unsigned short rp_jmp; /* Receive poll jump */ volatile unsigned short tx_seg; /* W Tx segment */ volatile unsigned short tx_head; /* W Tx buffer head offset */ volatile unsigned short tx_tail; /* R Tx buffer tail offset */ volatile unsigned short tx_max; /* W Tx buffer size - 1 */ volatile unsigned short rx_seg; /* W Rx segment */ volatile unsigned short rx_head; /* W Rx buffer head offset */ volatile unsigned short rx_tail; /* R Rx buffer tail offset */ volatile unsigned short rx_max; /* W Rx buffer size - 1 */ volatile unsigned short tx_lw; /* W Tx buffer low water mark */ volatile unsigned short rx_lw; /* W Rx buffer low water mark */ volatile unsigned short rx_hw; /* W Rx buffer high water mark */ volatile unsigned short incr; /* W Increment to next channel */ volatile unsigned short fepdev; /* U SCC device base address */ volatile unsigned short edelay; /* W Exception delay */ volatile unsigned short blen; /* W Break length */ volatile unsigned short btime; /* U Break complete time */ volatile unsigned short iflag; /* C UNIX input flags */ volatile unsigned short oflag; /* C UNIX output flags */ volatile unsigned short cflag; /* C UNIX control flags */ volatile unsigned short wfill[13]; /* U Reserved for expansion */ volatile unsigned char num; /* U Channel number */ volatile unsigned char ract; /* U Receiver active counter */ volatile unsigned char bstat; /* U Break status bits */ volatile unsigned char tbusy; /* W Transmit busy */ volatile unsigned char iempty; /* W Transmit empty event enable */ volatile unsigned char ilow; /* W Transmit low-water event enable */ volatile unsigned char idata; /* W Receive data interrupt enable */ volatile unsigned char eflag; /* U Host event flags */ volatile unsigned char tflag; /* U Transmit flags */ volatile unsigned char rflag; /* U Receive flags */ volatile unsigned char xmask; /* U Transmit ready flags */ volatile unsigned char xval; /* U Transmit ready value */ volatile unsigned char m_stat; /* RC Modem status bits */ volatile unsigned char m_change; /* U Modem bits which changed */ volatile unsigned char m_int; /* W Modem interrupt enable bits */ volatile unsigned char m_last; /* U Last modem status */ volatile unsigned char mtran; /* C Unreported modem trans */ volatile unsigned char orun; /* C Buffer overrun occurred */ volatile unsigned char astartc; /* W Auxiliary Xon char */ volatile unsigned char astopc; /* W Auxiliary Xoff char */ volatile unsigned char startc; /* W Xon character */ volatile unsigned char stopc; /* W Xoff character */ volatile unsigned char vnextc; /* W Vnext character */ volatile unsigned char hflow; /* C Software flow control */ volatile unsigned char fillc; /* U Delay Fill character */ volatile unsigned char ochar; /* U Saved output character */ volatile unsigned char omask; /* U Output character mask */ volatile unsigned char bfill[13]; /* U Reserved for expansion */ volatile unsigned char scc[16]; /* U SCC registers */ }; /************************************************************************ * FEP supported functions ************************************************************************/ #define SRLOW 0xe0 /* Set receive low water */ #define SRHIGH 0xe1 /* Set receive high water */ #define FLUSHTX 0xe2 /* Flush transmit buffer */ #define PAUSETX 0xe3 /* Pause data transmission */ #define RESUMETX 0xe4 /* Resume data transmission */ #define SMINT 0xe5 /* Set Modem Interrupt */ #define SAFLOWC 0xe6 /* Set Aux. flow control chars */ #define SBREAK 0xe8 /* Send break */ #define SMODEM 0xe9 /* Set 8530 modem control lines */ #define SIFLAG 0xea /* Set UNIX iflags */ #define SFLOWC 0xeb /* Set flow control characters */ #define STLOW 0xec /* Set transmit low water mark */ #define RPAUSE 0xee /* Pause recieve */ #define RRESUME 0xef /* Resume receive */ #define CHRESET 0xf0 /* Reset Channel */ #define BUFSETALL 0xf2 /* Set Tx & Rx buffer size avail*/ #define SOFLAG 0xf3 /* Set UNIX oflags */ #define SHFLOW 0xf4 /* Set hardware handshake */ #define SCFLAG 0xf5 /* Set UNIX cflags */ #define SVNEXT 0xf6 /* Set VNEXT character */ #define SPINTFC 0xfc /* Reserved */ #define SCOMMODE 0xfd /* Set RS232/422 mode */ /************************************************************************ * Modes for SCOMMODE ************************************************************************/ #define MODE_232 0x00 #define MODE_422 0x01 /************************************************************************ * Event flags. ************************************************************************/ #define IFBREAK 0x01 /* Break received */ #define IFTLW 0x02 /* Transmit low water */ #define IFTEM 0x04 /* Transmitter empty */ #define IFDATA 0x08 /* Receive data present */ #define IFMODEM 0x20 /* Modem status change */ /************************************************************************ * Modem flags ************************************************************************/ # define DM_RTS 0x02 /* Request to send */ # define DM_CD 0x80 /* Carrier detect */ # define DM_DSR 0x20 /* Data set ready */ # define DM_CTS 0x10 /* Clear to send */ # define DM_RI 0x40 /* Ring indicator */ # define DM_DTR 0x01 /* Data terminal ready */ #endif