staging: dgnc: add dgnc digi driver

This patch adds the DGNC driver. This is a TTY Serial Port
Driver for the Digi International Neo and Classic PCI based product
line by Digi International <http://www.digi.com>.

This driver isn't hooked up to the build system because it doesn't
build, it merely adds the driver written by Digi to the kernel tree so
that it can be cleaned up and fixed up properly over time.

Cc: Mark Hounschell <markh@compro.net>
Signed-off-by: Lidza Louina <lidza.louina@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 115 insertions, 0 deletions

diff --git a/drivers/staging/dgnc/dpacompat.h b/drivers/staging/dgnc/dpacompat.h
new file mode 100644
index 000000000000..44379eb22f42
--- /dev/null
+++ b/drivers/staging/dgnc/dpacompat.h
@@ -0,0 +1,115 @@
+/*
+ * 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!!!
+ */
+
+
+/* 
+ * This structure holds data needed for the intelligent <--> nonintelligent 
+ * DPA translation
+ */
+ struct ni_info {
+	int board;
+	int channel;
+	int dtr;
+	int rts;
+	int cts;
+	int dsr;
+	int ri;
+	int dcd;
+	int curtx;
+	int currx;
+	unsigned short iflag;
+	unsigned short oflag;
+	unsigned short cflag;
+	unsigned short lflag;
+
+	unsigned int mstat;
+	unsigned char hflow;
+
+	unsigned char xmit_stopped;
+	unsigned char recv_stopped;
+
+	unsigned int baud;
+};
+
+#define RW_READ		1
+#define RW_WRITE        2
+#define DIGI_KME        ('e'<<8) | 98           /* Read/Write Host */
+
+#define SUBTYPE         0007
+#define T_PCXI          0000
+#define T_PCXEM         0001
+#define T_PCXE          0002
+#define T_PCXR          0003
+#define T_SP            0004
+#define T_SP_PLUS       0005
+
+#define T_HERC   0000
+#define T_HOU    0001
+#define T_LON    0002
+#define T_CHA    0003
+
+#define T_NEO	 0000
+#define T_NEO_EXPRESS  0001
+#define T_CLASSIC 0002
+
+#define FAMILY          0070
+#define T_COMXI         0000
+#define	T_NI		0000
+#define T_PCXX          0010
+#define T_CX            0020
+#define T_EPC           0030
+#define T_PCLITE        0040
+#define T_SPXX          0050
+#define T_AVXX          0060
+#define T_DXB           0070
+#define T_A2K_4_8       0070
+
+#define BUSTYPE         0700
+#define T_ISABUS        0000
+#define T_MCBUS         0100
+#define T_EISABUS       0200
+#define T_PCIBUS        0400
+
+/* Board State Definitions */
+
+#define BD_RUNNING      0x0
+#define BD_REASON       0x7f
+#define BD_NOTFOUND     0x1
+#define BD_NOIOPORT     0x2
+#define BD_NOMEM        0x3
+#define BD_NOBIOS       0x4
+#define BD_NOFEP        0x5
+#define BD_FAILED       0x6
+#define BD_ALLOCATED    0x7
+#define BD_TRIBOOT      0x8
+#define BD_BADKME       0x80
+
+#define DIGI_AIXON      0x0400          /* Aux flow control in fep */
+
+/* Ioctls needed for dpa operation */
+
+#define DIGI_GETDD      ('d'<<8) | 248          /* get driver info      */
+#define DIGI_GETBD      ('d'<<8) | 249          /* get board info       */
+#define DIGI_GET_NI_INFO ('d'<<8) | 250		/* nonintelligent state snfo */
+
+/* Other special ioctls */
+#define DIGI_TIMERIRQ ('d'<<8) | 251		/* Enable/disable RS_TIMER use */
+#define DIGI_LOOPBACK ('d'<<8) | 252		/* Enable/disable UART internal loopback */