diff options
Diffstat (limited to 'drivers/staging/dgap/dgap_fep5.h')
| -rw-r--r-- | drivers/staging/dgap/dgap_fep5.h | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/drivers/staging/dgap/dgap_fep5.h b/drivers/staging/dgap/dgap_fep5.h new file mode 100644 index 000000000000..3a12ba5e3c2a --- /dev/null +++ b/drivers/staging/dgap/dgap_fep5.h @@ -0,0 +1,253 @@ +/* + * Copyright 2003 Digi International (www.digi.com) + * Scott H Kilau <Scott_Kilau at digi dot com> + * + * 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 |