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* stallion.h -- stallion multiport serial driver.
* 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 _STALLION_H
#define _STALLION_H
* Define important driver constants here.
#define STL_MAXBRDS 4
#define STL_MAXBANKS 8
#define STL_MAXPORTS 64
* Define a set of structures to hold all the board/panel/port info
* for our ports. These will be dynamically allocated as required.
* Define a ring queue structure for each port. This will hold the
* TX data waiting to be output. Characters are fed into this buffer
* from the line discipline (or even direct from user space!) and
* then fed into the UARTs during interrupts. Will use a classic ring
* queue here for this. The good thing about this type of ring queue
* is that the head and tail pointers can be updated without interrupt
* protection - since "write" code only needs to change the head, and
* interrupt code only needs to change the tail.
struct stlrq {
char *buf;
char *head;
char *tail;
* Port, panel and board structures to hold status info about each.
* The board structure contains pointers to structures for each panel
* connected to it, and in turn each panel structure contains pointers
* for each port structure for each port on that panel. Note that
* the port structure also contains the board and panel number that it
* is associated with, this makes it (fairly) easy to get back to the
* board/panel info for a port.
struct stlport {
unsigned long magic;
unsigned int portnr;
unsigned int panelnr;
unsigned int brdnr;
int ioaddr;
int uartaddr;
unsigned int pagenr;
unsigned long istate;
int flags;
int baud_base;
int custom_divisor;
int close_delay;
int closing_wait;
int refcount;
int openwaitcnt;
int brklen;
unsigned int sigs;
unsigned int rxignoremsk;
unsigned int rxmarkmsk;
unsigned int imr;
unsigned int crenable;
unsigned long clk;
unsigned long hwid;
void *uartp;
struct tty_struct *tty;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
comstats_t stats;
struct stlrq tx;
struct stlpanel {
unsigned long magic;
unsigned int panelnr;
unsigned int brdnr;
unsigned int pagenr;
unsigned int nrports;
int iobase;
void *uartp;
void (*isr)(struct stlpanel *panelp, unsigned int iobase);
unsigned int hwid;
unsigned int ackmask;
struct stlport *ports[STL_PORTSPERPANEL];
struct stlbrd {
unsigned long magic;
unsigned int brdnr;
unsigned int brdtype;
unsigned int state;
unsigned int nrpanels;
unsigned int nrports;
unsigned int nrbnks;
int irq;
int irqtype;
int (*isr)(struct stlbrd *brdp);
unsigned int ioaddr1;
unsigned int ioaddr2;
unsigned int iosize1;
unsigned int iosize2;
unsigned int iostatus;
unsigned int ioctrl;
unsigned int ioctrlval;
unsigned int hwid;
unsigned long clk;
unsigned int bnkpageaddr[STL_MAXBANKS];
unsigned int bnkstataddr[STL_MAXBANKS];
struct stlpanel *bnk2panel[STL_MAXBANKS];
struct stlpanel *panels[STL_MAXPANELS];
* Define MAGIC numbers used for above structures.
#define STL_PORTMAGIC 0x5a7182c9
#define STL_PANELMAGIC 0x7ef621a1
#define STL_BOARDMAGIC 0xa2267f52