Staging: vme: add VME userspace driver

Adds a VME userspace access driver
Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/vme/Kconfig

@@ -11,7 +11,7 @@ menuconfig VME
 if VME
 
 #source "drivers/staging/vme/bridges/Kconfig"
-#
-#source "drivers/staging/vme/devices/Kconfig"
+
+source "drivers/staging/vme/devices/Kconfig"
 
 endif # VME

drivers/staging/vme/Makefile

@@ -4,4 +4,4 @@
 obj-$(CONFIG_VME)		+= vme.o
 
 #obj-y				+= bridges/
-#obj-y				+= devices/
+obj-y				+= devices/

drivers/staging/vme/devices/Kconfig

+comment "VME Device Drivers"
+
+config VME_USER
+	tristate "VME user space access driver"
+	help
+	  If you say Y here you want to be able to access a limited number of
+	  VME windows in a manner at least semi-compatible with the interface
+	  provided with the original driver at http://vmelinux.org/.

drivers/staging/vme/devices/Makefile

+#
+# Makefile for the VME device drivers.
+#
+
+obj-$(CONFIG_VME_USER)		+= vme_user.o

drivers/staging/vme/devices/vme_user.h

+
+/*
+ * VMEbus Master Window Configuration Structure
+ */
+typedef struct {
+	char enable;			/* State of Window */
+	unsigned long long vme_addr;	/* Starting Address on the VMEbus */
+	unsigned long long size;	/* Window Size */
+	vme_address_t aspace;		/* Address Space */
+	vme_cycle_t cycle;		/* Cycle properties */
+	vme_width_t dwidth;		/* Maximum Data Width */
+#if 0
+	char prefetchEnable;		/* Prefetch Read Enable State */
+	int prefetchSize;		/* Prefetch Read Size (Cache Lines) */
+	char wrPostEnable;		/* Write Post State */
+#endif
+} vme_master_t;
+
+
+/*
+ * IOCTL Commands and structures
+ */
+
+/* Magic number for use in ioctls */
+#define VME_IOC_MAGIC 0xAE
+
+
+/* VMEbus Slave Window Configuration Structure */
+typedef struct {
+	char enable;			/* State of Window */
+	unsigned long long vme_addr;	/* Starting Address on the VMEbus */
+	unsigned long long size;	/* Window Size */
+	vme_address_t aspace;		/* Address Space */
+	vme_cycle_t cycle;		/* Cycle properties */
+#if 0
+	char wrPostEnable;		/* Write Post State */
+	char rmwLock;			/* Lock PCI during RMW Cycles */
+	char data64BitCapable;		/* non-VMEbus capable of 64-bit Data */
+#endif
+} vme_slave_t;
+
+#define VME_SET_SLAVE _IOW(VME_IOC_MAGIC, 10, vme_slave_t)
+