ab19dbcf8d
The macros here for generating coprocessor 0 accessors are named like: MIPS_RDRW32_COP0 That macro would produce mips_rd_<register>() and mips_wr_<register>() inlines to access the specified register by name from C. The problem is that the R and the W were swapped in the macros originally; it was meant to be named RDWR because it generated mips_rd_* and mips_wr_* functions, but was instead spelled RDRW, which nobody should be expected to get right by anything other than copy and paste. It's too many consonants in a row to keep straight anyway, so just prefer e.g.: MIPS_RW32_COP0 While here, add a missing #undef.
421 lines
11 KiB
C
421 lines
11 KiB
C
/* $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)
|
|
{
|
|
__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");
|
|
}
|
|
|
|
static __inline void
|
|
mips_cp0_sync(void)
|
|
{
|
|
__asm __volatile (__XSTRING(COP0_SYNC));
|
|
}
|
|
|
|
static __inline void
|
|
mips_wbflush(void)
|
|
{
|
|
__asm __volatile ("sync" : : : "memory");
|
|
mips_barrier();
|
|
}
|
|
|
|
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
|
|
|
|
#if defined(__mips_n64)
|
|
MIPS_RW64_COP0(excpc, MIPS_COP_0_EXC_PC);
|
|
MIPS_RW64_COP0(entrylo0, MIPS_COP_0_TLB_LO0);
|
|
MIPS_RW64_COP0(entrylo1, MIPS_COP_0_TLB_LO1);
|
|
MIPS_RW64_COP0(entryhi, MIPS_COP_0_TLB_HI);
|
|
MIPS_RW64_COP0(pagemask, MIPS_COP_0_TLB_PG_MASK);
|
|
#endif
|
|
MIPS_RW64_COP0(xcontext, MIPS_COP_0_TLB_XCONTEXT);
|
|
|
|
#undef MIPS_RW64_COP0
|
|
#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);
|
|
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(entrylo0, MIPS_COP_0_TLB_LO0);
|
|
MIPS_RW32_COP0(entrylo1, MIPS_COP_0_TLB_LO1);
|
|
MIPS_RW32_COP0(entryhi, MIPS_COP_0_TLB_HI);
|
|
MIPS_RW32_COP0(pagemask, MIPS_COP_0_TLB_PG_MASK);
|
|
#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_ */
|