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Annotation of sys/arch/hppa/include/intr.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: intr.h,v 1.23 2007/05/16 19:37:06 thib Exp $  */
                      2:
                      3: /*
                      4:  * Copyright (c) 2002-2004 Michael Shalayeff
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  *
                     16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     19:  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
                     20:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                     21:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
                     22:  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
                     24:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
                     25:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
                     26:  * THE POSSIBILITY OF SUCH DAMAGE.
                     27:  */
                     28:
                     29: #ifndef _MACHINE_INTR_H_
                     30: #define _MACHINE_INTR_H_
                     31:
                     32: #include <machine/psl.h>
                     33:
                     34: #define        CPU_NINTS       32
                     35: #define        NIPL            16
                     36:
                     37: #define        IPL_NONE        0
                     38: #define        IPL_SOFTCLOCK   1
                     39: #define        IPL_SOFTNET     2
                     40: #define        IPL_BIO         3
                     41: #define        IPL_NET         4
                     42: #define        IPL_SOFTTTY     5
                     43: #define        IPL_TTY         6
                     44: #define        IPL_VM          7
                     45: #define        IPL_AUDIO       8
                     46: #define        IPL_CLOCK       9
                     47: #define        IPL_STATCLOCK   10
                     48: #define        IPL_HIGH        10
                     49: #define        IPL_NESTED      11      /* pseudo-level for sub-tables */
                     50:
                     51: #define        IST_NONE        0
                     52: #define        IST_PULSE       1
                     53: #define        IST_EDGE        2
                     54: #define        IST_LEVEL       3
                     55:
                     56: #if !defined(_LOCORE) && defined(_KERNEL)
                     57:
                     58: #include <machine/atomic.h>
                     59:
                     60: extern volatile int cpl;
                     61: extern volatile u_long ipending, imask[NIPL];
                     62: extern int astpending;
                     63:
                     64: #ifdef DIAGNOSTIC
                     65: void splassert_fail(int, int, const char *);
                     66: extern int splassert_ctl;
                     67: void splassert_check(int, const char *);
                     68: #define splassert(__wantipl) do {                      \
                     69:        if (splassert_ctl > 0) {                        \
                     70:                splassert_check(__wantipl, __func__);   \
                     71:        }                                               \
                     72: } while (0)
                     73: #else
                     74: #define        splassert(__wantipl)    do { /* nada */ } while (0)
                     75: #endif /* DIAGNOSTIC */
                     76:
                     77: void   cpu_intr_init(void);
                     78: void   cpu_intr(void *);
                     79:
                     80: static __inline int
                     81: spllower(int ncpl)
                     82: {
                     83:        register int ocpl asm("r28") = ncpl;
                     84:        __asm __volatile("copy  %0, %%arg0\n\tbreak %1, %2"
                     85:            : "+r" (ocpl) : "i" (HPPA_BREAK_KERNEL), "i" (HPPA_BREAK_SPLLOWER)
                     86:            : "r26", "memory");
                     87:        return (ocpl);
                     88: }
                     89:
                     90: static __inline int
                     91: splraise(int ncpl)
                     92: {
                     93:        int ocpl = cpl;
                     94:
                     95:        if (ocpl < ncpl)
                     96:                cpl = ncpl;
                     97:        __asm __volatile ("sync" : "+r" (cpl));
                     98:
                     99:        return (ocpl);
                    100: }
                    101:
                    102: static __inline void
                    103: splx(int ncpl)
                    104: {
                    105:        (void)spllower(ncpl);
                    106: }
                    107:
                    108: #define        splsoftclock()  splraise(IPL_SOFTCLOCK)
                    109: #define        splsoftnet()    splraise(IPL_SOFTNET)
                    110: #define        splbio()        splraise(IPL_BIO)
                    111: #define        splnet()        splraise(IPL_NET)
                    112: #define        splsofttty()    splraise(IPL_SOFTTTY)
                    113: #define        spltty()        splraise(IPL_TTY)
                    114: #define        splvm()         splraise(IPL_VM)
                    115: #define        splaudio()      splraise(IPL_AUDIO)
                    116: #define        splclock()      splraise(IPL_CLOCK)
                    117: #define        splsched()      splraise(IPL_SCHED)
                    118: #define        splstatclock()  splraise(IPL_STATCLOCK)
                    119: #define        splhigh()       splraise(IPL_HIGH)
                    120: #define        spl0()          spllower(IPL_NONE)
                    121:
                    122: #define        softintr(mask)  atomic_setbits_long(&ipending, mask)
                    123:
                    124: #define        SOFTINT_MASK ((1 << (IPL_SOFTCLOCK - 1)) | \
                    125:     (1 << (IPL_SOFTNET - 1)) | (1 << (IPL_SOFTTTY - 1)))
                    126:
                    127: #define        setsoftast()    (astpending = 1)
                    128: #define        setsoftclock()  softintr(1 << (IPL_SOFTCLOCK - 1))
                    129: #define        setsoftnet()    softintr(1 << (IPL_SOFTNET - 1))
                    130: #define        setsofttty()    softintr(1 << (IPL_SOFTTTY - 1))
                    131:
                    132: #endif /* !_LOCORE && _KERNEL */
                    133: #endif /* _MACHINE_INTR_H_ */