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* cdk.h -- CDK interface definitions.
* Copyright (C) 1996-1998 Stallion Technologies
* Copyright (C) 1994-1996 Greg Ungerer.
* 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 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* 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.
#ifndef _CDK_H
#define _CDK_H
#pragma pack(2)
* The following set of definitions is used to communicate with the
* shared memory interface of the Stallion intelligent multiport serial
* boards. The definitions in this file are taken directly from the
* document titled "Generic Stackable Interface, Downloader and
* Communications Development Kit".
* Define the set of important shared memory addresses. These are
* required to initialize the board and get things started. All of these
* addresses are relative to the start of the shared memory.
#define CDK_SIGADDR 0x200
#define CDK_FEATADDR 0x280
#define CDK_CDKADDR 0x300
#define CDK_RDYADDR 0x262
* On hardware power up the ROMs located on the EasyConnection 8/64 will
* fill out the following signature information into shared memory. This
* way the host system can quickly determine that the board is present
* and is operational.
typedef struct cdkecpsig {
unsigned long magic;
unsigned short romver;
unsigned short cputype;
unsigned char panelid[8];
} cdkecpsig_t;
#define ECP_MAGIC 0x21504345
* On hardware power up the ROMs located on the ONboard, Stallion and
* Brumbys will fill out the following signature information into shared
* memory. This way the host system can quickly determine that the board
* is present and is operational.
typedef struct cdkonbsig {
unsigned short magic0;
unsigned short magic1;
unsigned short magic2;
unsigned short magic3;
unsigned short romver;
unsigned short memoff;
unsigned short memseg;
unsigned short amask0;
unsigned short pic;
unsigned short status;
unsigned short btype;
unsigned short clkticks;
unsigned short clkspeed;
unsigned short amask1;
unsigned short amask2;
} cdkonbsig_t;
#define ONB_MAGIC0 0xf2a7
#define ONB_MAGIC1 0xa149
#define ONB_MAGIC2 0x6352
#define ONB_MAGIC3 0xf121
* Define the feature area structure. The feature area is the set of
* startup parameters used by the slave image when it starts executing.
* They allow for the specification of buffer sizes, debug trace, etc.
typedef struct cdkfeature {
unsigned long debug;
unsigned long banner;
unsigned long etype;
unsigned long nrdevs;
unsigned long brdspec;
unsigned long txrqsize;
unsigned long rxrqsize;
unsigned long flags;
} cdkfeature_t;
#define ETYP_DDK 0
#define ETYP_CDK 1
* Define the CDK header structure. This is the info that the slave
* environment sets up after it has been downloaded and started. It
* essentially provides a memory map for the shared memory interface.
typedef struct cdkhdr {
unsigned short command;
unsigned short status;
unsigned short port;
unsigned short mode;
unsigned long cmd_buf[14];
unsigned short alive_cnt;
unsigned short intrpt_mode;
unsigned char intrpt_id[8];
unsigned char ver_release;
unsigned char ver_modification;
unsigned char ver_fix;
unsigned char deadman_restart;
unsigned short deadman;
unsigned short nrdevs;
unsigned long memp;
unsigned long hostp;
unsigned long slavep;
unsigned char hostreq;
unsigned char slavereq;
unsigned char cmd_reserved[30];
} cdkhdr_t;
#define MODE_DDK 0
#define MODE_CDK 1
#define IMD_INTR 0x0
#define IMD_PPINTR 0x1
#define IMD_POLL 0xff
* Define the memory mapping structure. This structure is pointed to by
* the memp field in the stlcdkhdr struct. As many as these structures
* as required are laid out in shared memory to define how the rest of
* shared memory is divided up. There will be one for each port.
typedef struct cdkmem {
unsigned short dtype;
unsigned long offset;
} cdkmem_t;
#define TYP_UNDEFINED 0x0
#define TYP_ASYNCTRL 0x1
#define TYP_ASYNC 0x20
#define TYP_PARALLEL 0x40
#define TYP_SYNCX21 0x60
* Following is a set of defines and structures used to actually deal
* with the serial ports on the board. Firstly is the set of commands
* that can be applied to ports.
#define ASYCMD (((unsigned long) 'a') << 8)
#define A_NULL (ASYCMD | 0)
#define A_FLUSH (ASYCMD | 1)
#define A_BREAK (ASYCMD | 2)
#define A_GETPORT (ASYCMD | 3)
#define A_SETPORT (ASYCMD | 4)
#define A_SETPORTF (ASYCMD | 5)
#define A_GETNOTIFY (ASYCMD | 13)
#define A_SETNOTIFY (ASYCMD | 14)
#define A_NOTIFY (ASYCMD | 15)
#define A_PORTCTRL (ASYCMD | 16)
#define A_GETSTATS (ASYCMD | 17)
#define A_RQSTATE (ASYCMD | 18)
#define A_FLOWSTATE (ASYCMD | 19)
#define A_CLEARSTATS (ASYCMD | 20)
* Define those arguments used for simple commands.
#define FLUSHRX 0x1
#define FLUSHTX 0x2
#define BREAKON -1
#define BREAKOFF -2
* Define the port setting structure, and all those defines that go along
* with it. Basically this structure defines the characteristics of this
* port: baud rate, chars, parity, input/output char cooking etc.
typedef struct asyport {
unsigned long baudout;
unsigned long baudin;
unsigned long iflag;
unsigned long oflag;
unsigned long lflag;
unsigned long pflag;
unsigned long flow;
unsigned long spare1;
unsigned short vtime;
unsigned short vmin;
unsigned short txlo;
unsigned short txhi;
unsigned short rxlo;
unsigned short rxhi;
unsigned short rxhog;
unsigned short spare2;
unsigned char csize;
unsigned char stopbs;
unsigned char parity;
unsigned char stopin;
unsigned char startin;
unsigned char stopout;
unsigned char startout;
unsigned char parmark;
unsigned char brkmark;
unsigned char cc[11];
} asyport_t;
#define PT_STOP1 0x0
#define PT_STOP15 0x1
#define PT_STOP2 0x2
#define PT_NOPARITY 0x0
#define PT_ODDPARITY 0x1
#define PT_EVENPARITY 0x2
#define PT_MARKPARITY 0x3
#define PT_SPACEPARITY 0x4
#define F_NONE 0x0
#define F_IXON 0x1
#define F_IXOFF 0x2
#define F_IXANY 0x4
#define F_IOXANY 0x8
#define F_RTSFLOW 0x10
#define F_CTSFLOW 0x20
#define F_DTRFLOW 0x40
#define F_DCDFLOW 0x80
#define F_DSROFLOW 0x100
#define F_DSRIFLOW 0x200
#define FI_NORX 0x1
#define FI_RAW 0x2
#define FI_ISTRIP 0x4
#define FI_UCLC 0x8
#define FI_INLCR 0x10
#define FI_ICRNL 0x20
#define FI_IGNCR 0x40
#define FI_IGNBREAK 0x80
#define FI_DSCRDBREAK 0x100
#define FI_1MARKBREAK 0x200
#define FI_2MARKBREAK 0x400
#define FI_XCHNGBREAK 0x800
#define FI_IGNRXERRS 0x1000
#define FI_DSCDRXERRS 0x2000
#define FI_1MARKRXERRS 0x4000
#define FI_2MARKRXERRS 0x8000
#define FI_XCHNGRXERRS 0x10000
#define FI_DSCRDNULL 0x20000
#define FO_OLCUC 0x1
#define FO_ONLCR 0x2
#define FO_OOCRNL 0x4
#define FO_ONOCR 0x8
#define FO_ONLRET 0x10
#define FO_ONL 0x20
#define FO_OBS 0x40
#define FO_OVT 0x80
#define FO_OFF 0x100
#define FO_OTAB1 0x200
#define FO_OTAB2 0x400
#define FO_OTAB3 0x800
#define FO_OCR1 0x1000
#define FO_OCR2 0x2000
#define FO_OCR3 0x4000
#define FO_OFILL 0x8000
#define FO_ODELL 0x10000
#define P_RTSLOCK 0x1
#define P_CTSLOCK 0x2
#define P_MAPRTS 0x4
#define P_MAPCTS 0x8
#define P_LOOPBACK 0x10
#define P_DTRFOLLOW 0x20
#define P_FAKEDCD 0x40
#define P_RXIMIN 0x10000
#define P_RXITIME 0x20000
#define P_RXTHOLD 0x40000
* Define a structure to communicate serial port signal and data state
* information.
typedef struct asysigs {
unsigned long data;
unsigned long signal;
unsigned long sigvalue;
} asysigs_t;
#define DT_TXBUSY 0x1
#define DT_TXEMPTY 0x2
#define DT_TXLOW 0x4
#define DT_TXHIGH 0x8
#define DT_TXFULL 0x10
#define DT_TXHOG 0x20
#define DT_TXFLOWED 0x40
#define DT_TXBREAK 0x80
#define DT_RXBUSY 0x100
#define DT_RXEMPTY 0x200
#define DT_RXLOW 0x400
#define DT_RXHIGH 0x800
#define DT_RXFULL 0x1000
#define DT_RXHOG 0x2000
#define DT_RXFLOWED 0x4000
#define DT_RXBREAK 0x8000
#define SG_DTR 0x1
#define SG_DCD 0x2
#define SG_RTS 0x4
#define SG_CTS 0x8
#define SG_DSR 0x10
#define SG_RI 0x20
* Define the notification setting structure. This is used to tell the
* port what events we want to be informed about. Fields here use the
* same defines as for the asysigs structure above.
typedef struct asynotify {
unsigned long ctrl;
unsigned long data;
unsigned long signal;
unsigned long sigvalue;
} asynotify_t;
* Define the port control structure. It is used to do fine grain
* control operations on the port.
typedef struct {
unsigned long rxctrl;
unsigned long txctrl;
char rximdch;
char tximdch;
char spare1;
char spare2;
} asyctrl_t;
#define CT_ENABLE 0x1
#define CT_DISABLE 0x2
#define CT_STOP 0x4
#define CT_START 0x8
#define CT_STARTFLOW 0x10
#define CT_STOPFLOW 0x20
#define CT_SENDCHR 0x40
* Define the stats structure kept for each port. This is a useful set
* of data collected for each port on the slave. The A_GETSTATS command
* is used to retrieve this data from the slave.
typedef struct asystats {
unsigned long opens;
unsigned long txchars;
unsigned long rxchars;
unsigned long txringq;
unsigned long rxringq;
unsigned long txmsgs;
unsigned long rxmsgs;
unsigned long txflushes;
unsigned long rxflushes;
unsigned long overruns;
unsigned long framing;
unsigned long parity;
unsigned long ringover;
unsigned long lost;
unsigned long rxstart;
unsigned long rxstop;
unsigned long txstart;
unsigned long txstop;
unsigned long dcdcnt;
unsigned long dtrcnt;
unsigned long ctscnt;
unsigned long rtscnt;
unsigned long dsrcnt;
unsigned long ricnt;
unsigned long txbreaks;
unsigned long rxbreaks;
unsigned long signals;
unsigned long state;
unsigned long hwid;
} asystats_t;
* All command and control communication with a device on the slave is
* via a control block in shared memory. Each device has its own control
* block, defined by the following structure. The control block allows
* the host to open, close and control the device on the slave.
typedef struct cdkctrl {
unsigned char open;
unsigned char close;
unsigned long openarg;
unsigned long closearg;
unsigned long cmd;
unsigned long status;
unsigned long args[32];
} cdkctrl_t;
* Each device on the slave passes data to and from the host via a ring
* queue in shared memory. Define a ring queue structure to hold the
* vital information about each ring queue. Two ring queues will be
* allocated for each port, one for receive data and one for transmit
* data.
typedef struct cdkasyrq {
unsigned long offset;
unsigned short size;
unsigned short head;
unsigned short tail;
} cdkasyrq_t;
* Each asynchronous port is defined in shared memory by the following
* structure. It contains a control block to command a device, and also
* the necessary data channel information as well.
typedef struct cdkasy {
cdkctrl_t ctrl;
unsigned short notify;
asynotify_t changed;
unsigned short receive;
cdkasyrq_t rxq;
unsigned short transmit;
cdkasyrq_t txq;
} cdkasy_t;
#pragma pack()
* Define the set of ioctls used by the driver to do special things
* to the board. These include interrupting it, and initializing
* the driver after board startup and shutdown.
#include <linux/ioctl.h>
#define STL_BINTR _IO('s',20)
#define STL_BSTART _IO('s',21)
#define STL_BSTOP _IO('s',22)
#define STL_BRESET _IO('s',23)
* Define a set of ioctl extensions, used to get at special stuff.
#define STL_GETPFLAG _IO('s',80)
#define STL_SETPFLAG _IO('s',81)