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Annotation of sys/arch/jornada/include/jornada_intr.h, Revision 1.1.1.1

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: