patch-2.4.19 linux-2.4.19/include/asm-ia64/sn/sn1/intr_public.h

• Lines: 54
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/include/asm-ia64/sn/sn1/intr_public.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/include/asm-ia64/sn/sn1/intr_public.h linux-2.4.19/include/asm-ia64/sn/sn1/intr_public.h
@@ -0,0 +1,53 @@
+/* $Id: intr_public.h,v 1.1 2002/02/28 17:31:25 marcelo Exp $
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1992 - 1997, 2000-2001 Silicon Graphics, Inc. All rights reserved.
+ */
+#ifndef _ASM_IA64_SN_SN1_INTR_PUBLIC_H
+#define _ASM_IA64_SN_SN1_INTR_PUBLIC_H
+
+/* REMEMBER: If you change these, the whole world needs to be recompiled.
+ * It would also require changing the hubspl.s code and SN0/intr.c
+ * Currently, the spl code has no support for multiple INTPEND1 masks.
+ */
+
+#define	N_INTPEND0_MASKS	1
+#define	N_INTPEND1_MASKS	1
+
+#define INTPEND0_MAXMASK	(N_INTPEND0_MASKS - 1)
+#define INTPEND1_MAXMASK	(N_INTPEND1_MASKS - 1)
+
+#ifndef __ASSEMBLY__
+#include <asm/sn/arch.h>
+
+struct intr_vecblk_s;	/* defined in asm/sn/intr.h */
+
+/*
+ * The following are necessary to create the illusion of a CEL
+ * on the IP27 hub.  We'll add more priority levels soon, but for
+ * now, any interrupt in a particular band effectively does an spl.
+ * These must be in the PDA since they're different for each processor.
+ * Users of this structure must hold the vector_lock in the appropriate vector
+ * block before modifying the mask arrays.  There's only one vector block
+ * for each Hub so a lock in the PDA wouldn't be adequate.
+ */
+typedef struct hub_intmasks_s {
+	/*
+	 * The masks are stored with the lowest-priority (most inclusive)
+	 * in the lowest-numbered masks (i.e., 0, 1, 2...).
+	 */
+	/* INT_PEND0: */
+	hubreg_t		intpend0_masks[N_INTPEND0_MASKS]; 
+	/* INT_PEND1: */
+	hubreg_t		intpend1_masks[N_INTPEND1_MASKS];
+	/* INT_PEND0: */
+	struct intr_vecblk_s	*dispatch0;	
+	/* INT_PEND1: */
+	struct intr_vecblk_s	*dispatch1;
+} hub_intmasks_t;
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_IA64_SN_SN1_INTR_PUBLIC_H */