391 lines
12 KiB
C
391 lines
12 KiB
C
/* $OpenBSD: pio.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD AND BSD-4-Clause
|
|
*
|
|
* 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
|
|
}
|
|
|
|
static __inline void
|
|
breakpoint(void)
|
|
{
|
|
__asm __volatile ("break");
|
|
}
|
|
|
|
#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) \
|
|
{ \
|
|
uint64_t 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) \
|
|
{ \
|
|
uint64_t 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);
|
|
MIPS_RW64_COP0_SEL(userlocal, MIPS_COP_0_USERLOCAL, 2);
|
|
#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) \
|
|
{ \
|
|
uint32_t 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) \
|
|
{ \
|
|
uint32_t 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) || defined (CPU_MIPS74K) || \
|
|
defined(CPU_MIPS24K)
|
|
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);
|
|
MIPS_RW32_COP0_SEL(userlocal, MIPS_COP_0_USERLOCAL, 2);
|
|
#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);
|
|
MIPS_RW32_COP0_SEL(cinfo, MIPS_COP_0_PRID, 6);
|
|
MIPS_RW32_COP0_SEL(tinfo, MIPS_COP_0_PRID, 7);
|
|
/* XXX 64-bit? */
|
|
MIPS_RW32_COP0_SEL(ebase, MIPS_COP_0_PRID, 1);
|
|
|
|
#if defined(CPU_MIPS24K) || defined(CPU_MIPS34K) || \
|
|
defined(CPU_MIPS74K) || defined(CPU_MIPS1004K) || \
|
|
defined(CPU_MIPS1074K) || defined(CPU_INTERAPTIV) || \
|
|
defined(CPU_PROAPTIV)
|
|
/* MIPS32/64 r2 intctl */
|
|
MIPS_RW32_COP0_SEL(intctl, MIPS_COP_0_INTCTL, 1);
|
|
#endif
|
|
|
|
#ifdef CPU_XBURST
|
|
MIPS_RW32_COP0_SEL(xburst_mbox0, MIPS_COP_0_XBURST_MBOX, 0);
|
|
MIPS_RW32_COP0_SEL(xburst_mbox1, MIPS_COP_0_XBURST_MBOX, 1);
|
|
MIPS_RW32_COP0_SEL(xburst_core_ctl, MIPS_COP_0_XBURST_C12, 2);
|
|
MIPS_RW32_COP0_SEL(xburst_core_sts, MIPS_COP_0_XBURST_C12, 3);
|
|
MIPS_RW32_COP0_SEL(xburst_reim, MIPS_COP_0_XBURST_C12, 4);
|
|
#endif
|
|
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);
|
|
MIPS_RW32_COP0(hwrena, MIPS_COP_0_HWRENA);
|
|
|
|
#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);
|
|
}
|
|
|
|
#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(__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(__mips_o32)
|
|
#define writeq(va, d) (*(volatile uint64_t *) (va) = (d))
|
|
#endif
|
|
|
|
#endif /* !_MACHINE_CPUFUNC_H_ */
|