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diff --git a/include/linux/stallion.h b/include/linux/stallion.h
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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
+ * 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.
+ */
+
+#include <linux/version.h>
+
+/*****************************************************************************/
+#ifndef _STALLION_H
+#define _STALLION_H
+/*****************************************************************************/
+
+/*
+ * Define important driver constants here.
+ */
+#define STL_MAXBRDS 4
+#define STL_MAXPANELS 4
+#define STL_MAXBANKS 8
+#define STL_PORTSPERPANEL 16
+#define STL_MAXPORTS 64
+#define STL_MAXDEVS (STL_MAXBRDS * STL_MAXPORTS)
+
+
+/*
+ * 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.
+ */
+typedef struct {
+ char *buf;
+ char *head;
+ char *tail;
+} stlrq_t;
+
+/*
+ * 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.
+ */
+typedef struct stlport {
+ unsigned long magic;
+ int portnr;
+ int panelnr;
+ int brdnr;
+ int ioaddr;
+ int uartaddr;
+ int pagenr;
+ 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;
+ struct work_struct tqueue;
+ comstats_t stats;
+ stlrq_t tx;
+} stlport_t;
+
+typedef struct stlpanel {
+ unsigned long magic;
+ int panelnr;
+ int brdnr;
+ int pagenr;
+ int nrports;
+ int iobase;
+ void *uartp;
+ void (*isr)(struct stlpanel *panelp, unsigned int iobase);
+ unsigned int hwid;
+ unsigned int ackmask;
+ stlport_t *ports[STL_PORTSPERPANEL];
+} stlpanel_t;
+
+typedef struct stlbrd {
+ unsigned long magic;
+ int brdnr;
+ int brdtype;
+ int state;
+ int nrpanels;
+ int nrports;
+ 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];
+ stlpanel_t *bnk2panel[STL_MAXBANKS];
+ stlpanel_t *panels[STL_MAXPANELS];
+} stlbrd_t;
+
+
+/*
+ * Define MAGIC numbers used for above structures.
+ */
+#define STL_PORTMAGIC 0x5a7182c9
+#define STL_PANELMAGIC 0x7ef621a1
+#define STL_BOARDMAGIC 0xa2267f52
+
+/*****************************************************************************/
+#endif
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