Staging: comedi: add plx9052 header file

This is used by multiple comedi drivers.

It is the definitions for the PLX-9052 PCI interface chip

From: David Schleef <ds@schleef.org>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/drivers/plx9052.h

+/*
+    comedi/drivers/plx9052.h
+    Definitions for the PLX-9052 PCI interface chip
+
+    Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/>
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+
+    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.
+
+*/
+
+#ifndef _PLX9052_H_
+#define _PLX9052_H_
+
+/*
+ * PLX PCI9052 INTCSR register.
+ */
+#define PLX9052_INTCSR	0x4C	/* Offset in Local Configuration Registers */
+/* Local Interrupt 1 Enable */
+#define PLX9052_INTCSR_LI1ENAB_MASK		0x0001
+#define PLX9052_INTCSR_LI1ENAB_DISABLED		0x0000
+#define PLX9052_INTCSR_LI1ENAB_ENABLED		0x0001
+/* Local Interrupt 1 Polarity */
+#define PLX9052_INTCSR_LI1POL_MASK		0x0002
+#define PLX9052_INTCSR_LI1POL_LOW		0x0000
+#define PLX9052_INTCSR_LI1POL_HIGH		0x0002
+/* Local Interrupt 1 Status (read-only) */
+#define PLX9052_INTCSR_LI1STAT_MASK		0x0004
+#define PLX9052_INTCSR_LI1STAT_INACTIVE		0x0000
+#define PLX9052_INTCSR_LI1STAT_ACTIVE		0x0004
+/* Local Interrupt 2 Enable */
+#define PLX9052_INTCSR_LI2ENAB_MASK		0x0008
+#define PLX9052_INTCSR_LI2ENAB_DISABLED		0x0000
+#define PLX9052_INTCSR_LI2ENAB_ENABLED		0x0008
+/* Local Interrupt 2 Polarity */
+#define PLX9052_INTCSR_LI2POL_MASK		0x0010
+#define PLX9052_INTCSR_LI2POL_LOW		0x0000
+#define PLX9052_INTCSR_LI2POL_HIGH		0x0010
+/* Local Interrupt 2 Status (read-only) */
+#define PLX9052_INTCSR_LI2STAT_MASK		0x0020
+#define PLX9052_INTCSR_LI2STAT_INACTIVE		0x0000
+#define PLX9052_INTCSR_LI2STAT_ACTIVE		0x0020
+/* PCI Interrupt Enable */
+#define PLX9052_INTCSR_PCIENAB_MASK		0x0040
+#define PLX9052_INTCSR_PCIENAB_DISABLED		0x0000
+#define PLX9052_INTCSR_PCIENAB_ENABLED		0x0040
+/* Software Interrupt */
+#define PLX9052_INTCSR_SOFTINT_MASK		0x0080
+#define PLX9052_INTCSR_SOFTINT_UNASSERTED	0x0000
+#define PLX9052_INTCSR_SOFTINT_ASSERTED		0x0080
+/* Local Interrupt 1 Select Enable */
+#define PLX9052_INTCSR_LI1SEL_MASK		0x0100
+#define PLX9052_INTCSR_LI1SEL_LEVEL		0x0000
+#define PLX9052_INTCSR_LI1SEL_EDGE		0x0100
+/* Local Interrupt 2 Select Enable */
+#define PLX9052_INTCSR_LI2SEL_MASK		0x0200
+#define PLX9052_INTCSR_LI2SEL_LEVEL		0x0000
+#define PLX9052_INTCSR_LI2SEL_EDGE		0x0200
+/* Local Edge Triggerable Interrupt 1 Clear Bit */
+#define PLX9052_INTCSR_LI1CLRINT_MASK		0x0400
+#define PLX9052_INTCSR_LI1CLRINT_UNASSERTED	0x0000
+#define PLX9052_INTCSR_LI1CLRINT_ASSERTED	0x0400
+/* Local Edge Triggerable Interrupt 2 Clear Bit */
+#define PLX9052_INTCSR_LI2CLRINT_MASK		0x0800
+#define PLX9052_INTCSR_LI2CLRINT_UNASSERTED	0x0000
+#define PLX9052_INTCSR_LI2CLRINT_ASSERTED	0x0800
+/* ISA Interface Mode Enable (read-only over PCI bus) */
+#define PLX9052_INTCSR_ISAMODE_MASK		0x1000
+#define PLX9052_INTCSR_ISAMODE_DISABLED		0x0000
+#define PLX9052_INTCSR_ISAMODE_ENABLED		0x1000
+
+#endif /* _PLX9052_H_ */