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freebsd-dev/sys/mips/include/cpufunc.h
Adrian Chadd 04b5e02371 Rename some CPU_MIPSxxx options and add new CPU_MIPSxxx options 
This revision does the following renames:
CPU_MIPS24KC -> CPU_MIPS24K
CPU_MIPS74KC -> CPU_MIPS74K
CPU_MIPS1004KC -> CPU_MIPS1004K

It also adds the following new CPU_MIPSxxx options:
CPU_MIPS24KE, CPU_MIPS34K, CPU_MIPS1074K, CPU_INTERAPTIV, CPU_PROAPTIV

CPU_MIPSxxxxKC is limiting and possibly misleading as it implies the
MIPSxxxxK CPU has no FPU.
It would be better if the CPUs are named after their standard functionalities
only and the presence or absence of FPU can then be controlled via the
CPU_HAVEFPU option.

I will send out another dependent revision that moves MIPS 32 r2 and r3
CPUs to use the EHB instruction for clearing hazards instead of NOP/SSNOP.

Submitted by:	Stanislav Galabov <sgalabov@gmail.com>
Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D5077
2016-02-02 07:47:38 +00:00

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