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Annotation of sys/arch/jornada/include/jornada_intr.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: armish_intr.h,v 1.4 2007/05/19 15:47:18 miod Exp $ */
        !             2: /*     $NetBSD: sa11x0_intr.h,v 1.4 2003/07/05 06:53:08 dogcow Exp $ */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer.
        !            15:  * 2. Redistributions in binary form must reproduce the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer in the
        !            17:  *    documentation and/or other materials provided with the distribution.
        !            18:  * 3. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *     This product includes software developed for the NetBSD Project by
        !            21:  *     Wasabi Systems, Inc.
        !            22:  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
        !            23:  *    or promote products derived from this software without specific prior
        !            24:  *    written permission.
        !            25:  *
        !            26:  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
        !            27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
        !            28:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
        !            29:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
        !            30:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
        !            31:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
        !            32:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
        !            33:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
        !            34:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
        !            35:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            36:  * POSSIBILITY OF SUCH DAMAGE.
        !            37:  */
        !            38:
        !            39: #ifndef _SA11X0_INTR_H_
        !            40: #define _SA11X0_INTR_H_
        !            41:
        !            42: #define        ARM_IRQ_HANDLER _C_LABEL(sa11x0_irq_handler)
        !            43:
        !            44: #ifndef _LOCORE
        !            45:
        !            46: #include <arm/armreg.h>
        !            47: #include <arm/cpufunc.h>
        !            48: #include <arm/softintr.h>
        !            49:
        !            50: extern __volatile int current_ipl_level;
        !            51: extern __volatile int softint_pending;
        !            52: extern int sa11x0_imask[];
        !            53: void sa11x0_do_pending(void);
        !            54:
        !            55: void sa11x0_setipl(int new);
        !            56: void sa11x0_splx(int new);
        !            57: int sa11x0_splraise(int ipl);
        !            58: int sa11x0_spllower(int ipl);
        !            59: void sa11x0_setsoftintr(int si);
        !            60:
        !            61: /*
        !            62:  * An useful function for interrupt handlers.
        !            63:  * XXX: This shouldn't be here.
        !            64:  */
        !            65: static __inline int
        !            66: find_first_bit( uint32_t bits )
        !            67: {
        !            68:        int count;
        !            69:        uint32_t mask;
        !            70:
        !            71:        /*
        !            72:         * If we weren't ARMv4 then we would use CLZ insn here (ARMv5 and above).
        !            73:         * Since our CPU is SA1 which is ARMv4 we implement this in software.
        !            74:         * TODO optimize code.
        !            75:         */
        !            76:        count = 0;
        !            77:        mask = 1 << 31; /* we start from MSB */
        !            78:        for (; mask > 0; mask >>= 1)
        !            79:                if (bits & mask)
        !            80:                        break;
        !            81:                else
        !            82:                        count++;
        !            83:
        !            84:        return 31 - count;
        !            85: }
        !            86:
        !            87:
        !            88: int    _splraise(int);
        !            89: int    _spllower(int);
        !            90: void   splx(int);
        !            91: void   _setsoftintr(int);
        !            92:
        !            93: /*
        !            94:  * This function *MUST* be called very early on in a port's
        !            95:  * initarm() function, before ANY spl*() functions are called.
        !            96:  *
        !            97:  * The parameter is the virtual address of the I80321's Interrupt
        !            98:  * Controller registers.
        !            99:  */
        !           100: void sa11x0_intr_bootstrap(vaddr_t);
        !           101:
        !           102: void sa11x0_irq_handler(void *);
        !           103: #if 0
        !           104: void *sa11x0_intr_establish(int irqno, int level, int (*func)(void *),
        !           105:     void *cookie, char *name);
        !           106: void sa11x0_intr_disestablish(void *cookie);
        !           107: #endif
        !           108: const char *sa11x0_intr_string(void *cookie);
        !           109:
        !           110: #ifdef DIAGNOSTIC
        !           111: /*
        !           112:  * Although this function is implemented in MI code, it must be in this MD
        !           113:  * header because we don't want this header to include MI includes.
        !           114:  */
        !           115: void splassert_fail(int, int, const char *);
        !           116: extern int splassert_ctl;
        !           117: void sa11x0_splassert_check(int, const char *);
        !           118: #define splassert(__wantipl) do {                              \
        !           119:        if (splassert_ctl > 0) {                                \
        !           120:                sa11x0_splassert_check(__wantipl, __func__);    \
        !           121:        }                                                       \
        !           122: } while (0)
        !           123: #else
        !           124: #define        splassert(wantipl)      do { /* nothing */ } while (0)
        !           125: #endif
        !           126:
        !           127: #endif /* ! _LOCORE */
        !           128:
        !           129: #endif /* _SA11X0_INTR_H_ */
        !           130: