386 lines
11 KiB
C
386 lines
11 KiB
C
/* $OpenBSD: pio.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */
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/*-
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* Copyright (c) 2002-2004 Juli Mallett. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1995-1999 Per Fogelstrom. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Per Fogelstrom.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* JNPR: cpufunc.h,v 1.5 2007/08/09 11:23:32 katta
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* $FreeBSD$
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*/
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#ifndef _MACHINE_CPUFUNC_H_
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#define _MACHINE_CPUFUNC_H_
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#include <sys/types.h>
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#include <machine/cpuregs.h>
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/*
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* These functions are required by user-land atomi ops
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*/
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static __inline void
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mips_barrier(void)
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{
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#if defined(CPU_CNMIPS) || defined(CPU_RMI) || defined(CPU_NLM)
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__compiler_membar();
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#else
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__asm __volatile (".set noreorder\n\t"
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"nop\n\t"
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"nop\n\t"
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"nop\n\t"
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"nop\n\t"
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"nop\n\t"
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"nop\n\t"
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"nop\n\t"
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"nop\n\t"
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".set reorder\n\t"
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: : : "memory");
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#endif
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}
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static __inline void
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mips_cp0_sync(void)
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{
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__asm __volatile (__XSTRING(COP0_SYNC));
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}
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static __inline void
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mips_wbflush(void)
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{
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#if defined(CPU_CNMIPS)
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__asm __volatile (".set noreorder\n\t"
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"syncw\n\t"
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".set reorder\n"
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: : : "memory");
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#else
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__asm __volatile ("sync" : : : "memory");
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mips_barrier();
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#endif
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}
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#ifdef _KERNEL
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/*
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* XXX
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* It would be nice to add variants that read/write register_t, to avoid some
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* ABI checks.
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*/
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#if defined(__mips_n32) || defined(__mips_n64)
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#define MIPS_RW64_COP0(n,r) \
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static __inline uint64_t \
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mips_rd_ ## n (void) \
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{ \
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int v0; \
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__asm __volatile ("dmfc0 %[v0], $"__XSTRING(r)";" \
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: [v0] "=&r"(v0)); \
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mips_barrier(); \
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return (v0); \
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} \
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static __inline void \
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mips_wr_ ## n (uint64_t a0) \
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{ \
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__asm __volatile ("dmtc0 %[a0], $"__XSTRING(r)";" \
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__XSTRING(COP0_SYNC)";" \
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"nop;" \
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"nop;" \
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: \
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: [a0] "r"(a0)); \
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mips_barrier(); \
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} struct __hack
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#define MIPS_RW64_COP0_SEL(n,r,s) \
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static __inline uint64_t \
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mips_rd_ ## n(void) \
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{ \
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int v0; \
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__asm __volatile ("dmfc0 %[v0], $"__XSTRING(r)", "__XSTRING(s)";" \
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: [v0] "=&r"(v0)); \
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mips_barrier(); \
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return (v0); \
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} \
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static __inline void \
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mips_wr_ ## n(uint64_t a0) \
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{ \
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__asm __volatile ("dmtc0 %[a0], $"__XSTRING(r)", "__XSTRING(s)";" \
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__XSTRING(COP0_SYNC)";" \
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: \
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: [a0] "r"(a0)); \
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mips_barrier(); \
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} struct __hack
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#if defined(__mips_n64)
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MIPS_RW64_COP0(excpc, MIPS_COP_0_EXC_PC);
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MIPS_RW64_COP0(entryhi, MIPS_COP_0_TLB_HI);
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MIPS_RW64_COP0(pagemask, MIPS_COP_0_TLB_PG_MASK);
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MIPS_RW64_COP0_SEL(userlocal, MIPS_COP_0_USERLOCAL, 2);
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#ifdef CPU_CNMIPS
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MIPS_RW64_COP0_SEL(cvmcount, MIPS_COP_0_COUNT, 6);
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MIPS_RW64_COP0_SEL(cvmctl, MIPS_COP_0_COUNT, 7);
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MIPS_RW64_COP0_SEL(cvmmemctl, MIPS_COP_0_COMPARE, 7);
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MIPS_RW64_COP0_SEL(icache_err, MIPS_COP_0_CACHE_ERR, 0);
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MIPS_RW64_COP0_SEL(dcache_err, MIPS_COP_0_CACHE_ERR, 1);
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#endif
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#endif
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#if defined(__mips_n64) || defined(__mips_n32) /* PHYSADDR_64_BIT */
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MIPS_RW64_COP0(entrylo0, MIPS_COP_0_TLB_LO0);
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MIPS_RW64_COP0(entrylo1, MIPS_COP_0_TLB_LO1);
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#endif
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MIPS_RW64_COP0(xcontext, MIPS_COP_0_TLB_XCONTEXT);
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#undef MIPS_RW64_COP0
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#undef MIPS_RW64_COP0_SEL
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#endif
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#define MIPS_RW32_COP0(n,r) \
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static __inline uint32_t \
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mips_rd_ ## n (void) \
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{ \
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int v0; \
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__asm __volatile ("mfc0 %[v0], $"__XSTRING(r)";" \
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: [v0] "=&r"(v0)); \
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mips_barrier(); \
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return (v0); \
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} \
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static __inline void \
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mips_wr_ ## n (uint32_t a0) \
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{ \
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__asm __volatile ("mtc0 %[a0], $"__XSTRING(r)";" \
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__XSTRING(COP0_SYNC)";" \
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"nop;" \
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"nop;" \
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: \
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: [a0] "r"(a0)); \
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mips_barrier(); \
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} struct __hack
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#define MIPS_RW32_COP0_SEL(n,r,s) \
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static __inline uint32_t \
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mips_rd_ ## n(void) \
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{ \
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int v0; \
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__asm __volatile ("mfc0 %[v0], $"__XSTRING(r)", "__XSTRING(s)";" \
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: [v0] "=&r"(v0)); \
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mips_barrier(); \
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return (v0); \
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} \
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static __inline void \
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mips_wr_ ## n(uint32_t a0) \
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{ \
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__asm __volatile ("mtc0 %[a0], $"__XSTRING(r)", "__XSTRING(s)";" \
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__XSTRING(COP0_SYNC)";" \
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"nop;" \
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"nop;" \
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: \
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: [a0] "r"(a0)); \
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mips_barrier(); \
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} struct __hack
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#ifdef CPU_CNMIPS
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static __inline void mips_sync_icache (void)
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{
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__asm __volatile (
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".set push\n"
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".set mips64\n"
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".word 0x041f0000\n" /* xxx ICACHE */
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"nop\n"
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".set pop\n"
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: : );
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}
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#endif
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MIPS_RW32_COP0(compare, MIPS_COP_0_COMPARE);
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MIPS_RW32_COP0(config, MIPS_COP_0_CONFIG);
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MIPS_RW32_COP0_SEL(config1, MIPS_COP_0_CONFIG, 1);
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MIPS_RW32_COP0_SEL(config2, MIPS_COP_0_CONFIG, 2);
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MIPS_RW32_COP0_SEL(config3, MIPS_COP_0_CONFIG, 3);
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#ifdef CPU_CNMIPS
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MIPS_RW32_COP0_SEL(config4, MIPS_COP_0_CONFIG, 4);
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#endif
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#ifdef BERI_LARGE_TLB
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MIPS_RW32_COP0_SEL(config5, MIPS_COP_0_CONFIG, 5);
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#endif
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#if defined(CPU_NLM) || defined(BERI_LARGE_TLB)
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MIPS_RW32_COP0_SEL(config6, MIPS_COP_0_CONFIG, 6);
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#endif
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#if defined(CPU_NLM) || defined(CPU_MIPS1004K) || defined (CPU_MIPS74K) || \
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defined(CPU_MIPS24K)
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MIPS_RW32_COP0_SEL(config7, MIPS_COP_0_CONFIG, 7);
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#endif
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MIPS_RW32_COP0(count, MIPS_COP_0_COUNT);
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MIPS_RW32_COP0(index, MIPS_COP_0_TLB_INDEX);
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MIPS_RW32_COP0(wired, MIPS_COP_0_TLB_WIRED);
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MIPS_RW32_COP0(cause, MIPS_COP_0_CAUSE);
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#if !defined(__mips_n64)
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MIPS_RW32_COP0(excpc, MIPS_COP_0_EXC_PC);
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#endif
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MIPS_RW32_COP0(status, MIPS_COP_0_STATUS);
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MIPS_RW32_COP0_SEL(cmgcrbase, 15, 3);
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/* XXX: Some of these registers are specific to MIPS32. */
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#if !defined(__mips_n64)
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MIPS_RW32_COP0(entryhi, MIPS_COP_0_TLB_HI);
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MIPS_RW32_COP0(pagemask, MIPS_COP_0_TLB_PG_MASK);
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MIPS_RW32_COP0_SEL(userlocal, MIPS_COP_0_USERLOCAL, 2);
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#endif
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#ifdef CPU_NLM
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MIPS_RW32_COP0_SEL(pagegrain, MIPS_COP_0_TLB_PG_MASK, 1);
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#endif
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#if !defined(__mips_n64) && !defined(__mips_n32) /* !PHYSADDR_64_BIT */
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MIPS_RW32_COP0(entrylo0, MIPS_COP_0_TLB_LO0);
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MIPS_RW32_COP0(entrylo1, MIPS_COP_0_TLB_LO1);
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#endif
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MIPS_RW32_COP0(prid, MIPS_COP_0_PRID);
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/* XXX 64-bit? */
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MIPS_RW32_COP0_SEL(ebase, MIPS_COP_0_PRID, 1);
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#ifdef CPU_XBURST
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MIPS_RW32_COP0_SEL(xburst_mbox0, MIPS_COP_0_XBURST_MBOX, 0);
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MIPS_RW32_COP0_SEL(xburst_mbox1, MIPS_COP_0_XBURST_MBOX, 1);
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MIPS_RW32_COP0_SEL(xburst_core_ctl, MIPS_COP_0_XBURST_C12, 2);
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MIPS_RW32_COP0_SEL(xburst_core_sts, MIPS_COP_0_XBURST_C12, 3);
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MIPS_RW32_COP0_SEL(xburst_reim, MIPS_COP_0_XBURST_C12, 4);
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#endif
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MIPS_RW32_COP0(watchlo, MIPS_COP_0_WATCH_LO);
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MIPS_RW32_COP0_SEL(watchlo1, MIPS_COP_0_WATCH_LO, 1);
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MIPS_RW32_COP0_SEL(watchlo2, MIPS_COP_0_WATCH_LO, 2);
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MIPS_RW32_COP0_SEL(watchlo3, MIPS_COP_0_WATCH_LO, 3);
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MIPS_RW32_COP0(watchhi, MIPS_COP_0_WATCH_HI);
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MIPS_RW32_COP0_SEL(watchhi1, MIPS_COP_0_WATCH_HI, 1);
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MIPS_RW32_COP0_SEL(watchhi2, MIPS_COP_0_WATCH_HI, 2);
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MIPS_RW32_COP0_SEL(watchhi3, MIPS_COP_0_WATCH_HI, 3);
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MIPS_RW32_COP0_SEL(perfcnt0, MIPS_COP_0_PERFCNT, 0);
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MIPS_RW32_COP0_SEL(perfcnt1, MIPS_COP_0_PERFCNT, 1);
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MIPS_RW32_COP0_SEL(perfcnt2, MIPS_COP_0_PERFCNT, 2);
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MIPS_RW32_COP0_SEL(perfcnt3, MIPS_COP_0_PERFCNT, 3);
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MIPS_RW32_COP0(hwrena, MIPS_COP_0_HWRENA);
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#undef MIPS_RW32_COP0
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#undef MIPS_RW32_COP0_SEL
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static __inline register_t
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intr_disable(void)
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{
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register_t s;
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s = mips_rd_status();
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mips_wr_status(s & ~MIPS_SR_INT_IE);
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return (s & MIPS_SR_INT_IE);
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}
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static __inline register_t
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intr_enable(void)
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{
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register_t s;
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s = mips_rd_status();
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mips_wr_status(s | MIPS_SR_INT_IE);
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return (s);
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}
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static __inline void
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intr_restore(register_t ie)
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{
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if (ie == MIPS_SR_INT_IE) {
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intr_enable();
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}
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}
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static __inline uint32_t
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set_intr_mask(uint32_t mask)
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{
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uint32_t ostatus;
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ostatus = mips_rd_status();
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mask = (ostatus & ~MIPS_SR_INT_MASK) | (mask & MIPS_SR_INT_MASK);
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mips_wr_status(mask);
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return (ostatus);
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}
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static __inline uint32_t
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get_intr_mask(void)
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{
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return (mips_rd_status() & MIPS_SR_INT_MASK);
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}
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static __inline void
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breakpoint(void)
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{
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__asm __volatile ("break");
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}
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#if defined(__GNUC__) && !defined(__mips_o32)
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#define mips3_ld(a) (*(const volatile uint64_t *)(a))
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#define mips3_sd(a, v) (*(volatile uint64_t *)(a) = (v))
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#else
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uint64_t mips3_ld(volatile uint64_t *va);
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void mips3_sd(volatile uint64_t *, uint64_t);
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#endif /* __GNUC__ */
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#endif /* _KERNEL */
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#define readb(va) (*(volatile uint8_t *) (va))
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#define readw(va) (*(volatile uint16_t *) (va))
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#define readl(va) (*(volatile uint32_t *) (va))
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#if defined(__GNUC__) && !defined(__mips_o32)
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#define readq(a) (*(volatile uint64_t *)(a))
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#endif
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#define writeb(va, d) (*(volatile uint8_t *) (va) = (d))
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#define writew(va, d) (*(volatile uint16_t *) (va) = (d))
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#define writel(va, d) (*(volatile uint32_t *) (va) = (d))
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#if defined(__GNUC__) && !defined(__mips_o32)
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#define writeq(va, d) (*(volatile uint64_t *) (va) = (d))
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#endif
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#endif /* !_MACHINE_CPUFUNC_H_ */
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