patch-1.3.93 linux/include/asm-sparc/msi.h

• Lines: 32
• Date: Sun Apr 21 12:30:33 1996
• Orig file: v1.3.92/linux/include/asm-sparc/msi.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.92/linux/include/asm-sparc/msi.h linux/include/asm-sparc/msi.h
@@ -0,0 +1,31 @@
+/* $Id: msi.h,v 1.1 1996/04/20 10:14:32 davem Exp $
+ * msi.h:  Defines specific to the MBus - Sbus - Interface.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 Eddie C. Dost   (ecd@pool.informatik.rwth-aachen.de)
+ */
+
+#ifndef _SPARC_MSI_H
+#define _SPARC_MSI_H
+
+/*
+ * Locations of MSI Registers.
+ */
+#define MSI_MBUS_ARBEN	0xe0001008	/* MBus Arbiter Enable register */
+
+/*
+ * Useful bits in the MSI Registers.
+ */
+#define MSI_ASYNC_MODE  0x80000000	/* Operate the MSI asynchronously */
+
+
+extern inline void msi_set_sync(void)
+{
+	__asm__ __volatile__ ("lda [%0] %1, %%g3\n\t"
+			      "andn %%g3, %2, %%g3\n\t"
+			      "sta %%g3, [%0] %1\n\t" : :
+			      "r" (MSI_MBUS_ARBEN),
+			      "i" (ASI_M_CTL), "r" (MSI_ASYNC_MODE) : "g3");
+}
+
+#endif /* !(_SPARC_MSI_H) */