intr_public.h
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上传日期:2013-02-24
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- /* $Id$
- *
- * 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 Silicon Graphics, Inc.
- * Copyright (C) 2000 by Colin Ngam
- */
- #ifndef _ASM_SN_INTR_PUBLIC_H__
- #define _ASM_SN_INTR_PUBLIC_H__
- #include <linux/config.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)
- #if _LANGUAGE_C
- #if defined(CONFIG_SGI_IP35) || defined(CONFIG_IA64_SGI_SN1) || defined(CONFIG_IA64_GENERIC)
- #include <asm/sn/sn1/arch.h>
- #endif
- #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 /* _LANGUAGE_C */
- #endif /* _ASM_SN_INTR_PUBLIC_H__ */