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/*
* 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 Silicon Graphics, Inc.
*/
#ifndef __ASM_SN_INTR_PUBLIC_H
#define __ASM_SN_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)
#if _LANGUAGE_C
#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 SN0 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 */
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