/* $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 <rtems/bsd/sys/types.h>
#include <machine/cpuregs.h>
/*
* These functions are required by user-land atomi ops
*/
static __inline void
mips_barrier(void)
{
#ifdef CPU_CNMIPS
__asm __volatile("" : : : "memory");
#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
}
static __inline void
mips_read_membar(void)
{
/* Nil */
}
static __inline void
mips_write_membar(void)
{
mips_wbflush();
}
#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 CPU_NLM
MIPS_RW32_COP0_SEL(config6, MIPS_COP_0_CONFIG, 6);
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);
/* 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
#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)
static inline uint64_t
mips3_ld(const volatile uint64_t *va)
{
uint64_t rv;
#if defined(_LP64)
rv = *va;
#else
__asm volatile("ld %0,0(%1)" : "=d"(rv) : "r"(va));
#endif
return (rv);
}
static inline void
mips3_sd(volatile uint64_t *va, uint64_t v)
{
#if defined(_LP64)
*va = v;
#else
__asm volatile("sd %0,0(%1)" :: "r"(v), "r"(va));
#endif
}
#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))
#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))
/*
* I/O macros.
*/
#define outb(a,v) (*(volatile unsigned char*)(a) = (v))
#define out8(a,v) (*(volatile unsigned char*)(a) = (v))
#define outw(a,v) (*(volatile unsigned short*)(a) = (v))
#define out16(a,v) outw(a,v)
#define outl(a,v) (*(volatile unsigned int*)(a) = (v))
#define out32(a,v) outl(a,v)
#define inb(a) (*(volatile unsigned char*)(a))
#define in8(a) (*(volatile unsigned char*)(a))
#define inw(a) (*(volatile unsigned short*)(a))
#define in16(a) inw(a)
#define inl(a) (*(volatile unsigned int*)(a))
#define in32(a) inl(a)
#define out8rb(a,v) (*(volatile unsigned char*)(a) = (v))
#define out16rb(a,v) (__out16rb((volatile uint16_t *)(a), v))
#define out32rb(a,v) (__out32rb((volatile uint32_t *)(a), v))
#define in8rb(a) (*(volatile unsigned char*)(a))
#define in16rb(a) (__in16rb((volatile uint16_t *)(a)))
#define in32rb(a) (__in32rb((volatile uint32_t *)(a)))
#define _swap_(x) (((x) >> 24) | ((x) << 24) | \
(((x) >> 8) & 0xff00) | (((x) & 0xff00) << 8))
static __inline void __out32rb(volatile uint32_t *, uint32_t);
static __inline void __out16rb(volatile uint16_t *, uint16_t);
static __inline uint32_t __in32rb(volatile uint32_t *);
static __inline uint16_t __in16rb(volatile uint16_t *);
static __inline void
__out32rb(volatile uint32_t *a, uint32_t v)
{
uint32_t _v_ = v;
_v_ = _swap_(_v_);
out32(a, _v_);
}
static __inline void
__out16rb(volatile uint16_t *a, uint16_t v)
{
uint16_t _v_;
_v_ = ((v >> 8) & 0xff) | (v << 8);
out16(a, _v_);
}
static __inline uint32_t
__in32rb(volatile uint32_t *a)
{
uint32_t _v_;
_v_ = in32(a);
_v_ = _swap_(_v_);
return _v_;
}
static __inline uint16_t
__in16rb(volatile uint16_t *a)
{
uint16_t _v_;
_v_ = in16(a);
_v_ = ((_v_ >> 8) & 0xff) | (_v_ << 8);
return _v_;
}
void insb(uint8_t *, uint8_t *,int);
void insw(uint16_t *, uint16_t *,int);
void insl(uint32_t *, uint32_t *,int);
void outsb(uint8_t *, const uint8_t *,int);
void outsw(uint16_t *, const uint16_t *,int);
void outsl(uint32_t *, const uint32_t *,int);
u_int loadandclear(volatile u_int *addr);
#endif /* !_MACHINE_CPUFUNC_H_ */
