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freebsd-dev/sys/mips/include/cpufunc.h
Juli Mallett cea2b8b915 Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive 
library:
o) Increase inline unit / large function growth limits for MIPS to accommodate
   the needs of the Simple Executive, which uses a shocking amount of inlining.
o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and
   the Octeon SoC.
o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific
   board numbers, specifically to support the MR320.
o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd,
   which improperly uses an evaluation board's board number and breaks board
   detection at runtime.  This board is sold by Portwell as the CAM-0100.
o) Add support for the RTC available on some Octeon boards.
o) Add support for the Octeon PCI bus.  Note that rman_[sg]et_virtual for IO
   ports can not work unless building for n64.
o) Clean up the CompactFlash driver to use Simple Executive macros and
   structures where possible (it would be advisable to use the Simple Executive
   API to set the PIO mode, too, but that is not done presently.)  Also use
   structures from FreeBSD's ATA layer rather than structures copied from
   Linux.
o) Print available Octeon SoC features on boot.
o) Add support for the Octeon timecounter.
o) Use the Simple Executive's routines rather than local copies for doing reads
   and writes to 64-bit addresses and use its macros for various device
   addresses rather than using local copies.
o) Rename octeon_board_real to octeon_is_simulation to reduce differences with
   Cavium-provided code originally written for Linux.  Also make it use the
   same simplified test that the Simple Executive and Linux both use rather
   than our complex one.
o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus
   to use normal interrupt allocation and setup routines.
o) Use the Simple Executive's bootmem facility to allocate physical memory for
   the kernel, rather than assuming we know which addresses we can steal.
   NB: This may reduce the amount of RAM the kernel reports you as having if
       you are leaving large temporary allocations made by U-Boot allocated
       when starting FreeBSD.
o) Add a port of the Cavium-provided Ethernet driver for Linux.  This changes
   Ethernet interface naming from rgmxN to octeN.  The new driver has vast
   improvements over the old one, both in performance and functionality, but
   does still have some features which have not been ported entirely and there
   may be unimplemented code that can be hit in everyday use.  I will make
   every effort to correct those as they are reported.
o) Support loading the kernel on non-contiguous cores.
o) Add very conservative support for harvesting randomness from the Octeon
   random number device.
o) Turn SMP on by default.
o) Clean up the style of the Octeon kernel configurations a little and make
   them compile with -march=octeon.
o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple
   Executive.
o) Modify the Simple Executive to build on FreeBSD and to build without
   executive-config.h or cvmx-config.h.  In the future we may want to
   revert part of these changes and supply executive-config.h and
   cvmx-config.h and access to the options contained in those files via
   kernel configuration files.
o) Modify the Simple Executive USB routines to support getting and setting
   of the USB PID.
2010-07-20 19:25:11 +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)
{
__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
#if defined(__mips_n32) || defined(__mips_n64)
#define MIPS_RDRW64_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_RDRW64_COP0(entrylo0, MIPS_COP_0_TLB_LO0);
MIPS_RDRW64_COP0(entrylo1, MIPS_COP_0_TLB_LO1);
MIPS_RDRW64_COP0(entryhi, MIPS_COP_0_TLB_HI);
MIPS_RDRW64_COP0(pagemask, MIPS_COP_0_TLB_PG_MASK);
#endif
MIPS_RDRW64_COP0(xcontext, MIPS_COP_0_TLB_XCONTEXT);
#undef MIPS_RDRW64_COP0
#endif
#define MIPS_RDRW32_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_RDRW32_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_RDRW32_COP0(compare, MIPS_COP_0_COMPARE);
MIPS_RDRW32_COP0(config, MIPS_COP_0_CONFIG);
MIPS_RDRW32_COP0_SEL(config1, MIPS_COP_0_CONFIG, 1);
MIPS_RDRW32_COP0_SEL(config2, MIPS_COP_0_CONFIG, 2);
MIPS_RDRW32_COP0_SEL(config3, MIPS_COP_0_CONFIG, 3);
MIPS_RDRW32_COP0(count, MIPS_COP_0_COUNT);
MIPS_RDRW32_COP0(index, MIPS_COP_0_TLB_INDEX);
MIPS_RDRW32_COP0(wired, MIPS_COP_0_TLB_WIRED);
MIPS_RDRW32_COP0(cause, MIPS_COP_0_CAUSE);
MIPS_RDRW32_COP0(status, MIPS_COP_0_STATUS);
/* XXX: Some of these registers are specific to MIPS32. */
#if !defined(__mips_n64)
MIPS_RDRW32_COP0(entrylo0, MIPS_COP_0_TLB_LO0);
MIPS_RDRW32_COP0(entrylo1, MIPS_COP_0_TLB_LO1);
MIPS_RDRW32_COP0(entryhi, MIPS_COP_0_TLB_HI);
MIPS_RDRW32_COP0(pagemask, MIPS_COP_0_TLB_PG_MASK);
#endif
MIPS_RDRW32_COP0(prid, MIPS_COP_0_PRID);
/* XXX 64-bit? */
MIPS_RDRW32_COP0_SEL(ebase, MIPS_COP_0_PRID, 1);
MIPS_RDRW32_COP0(watchlo, MIPS_COP_0_WATCH_LO);
MIPS_RDRW32_COP0_SEL(watchlo1, MIPS_COP_0_WATCH_LO, 1);
MIPS_RDRW32_COP0_SEL(watchlo2, MIPS_COP_0_WATCH_LO, 2);
MIPS_RDRW32_COP0_SEL(watchlo3, MIPS_COP_0_WATCH_LO, 3);
MIPS_RDRW32_COP0(watchhi, MIPS_COP_0_WATCH_HI);
MIPS_RDRW32_COP0_SEL(watchhi1, MIPS_COP_0_WATCH_HI, 1);
MIPS_RDRW32_COP0_SEL(watchhi2, MIPS_COP_0_WATCH_HI, 2);
MIPS_RDRW32_COP0_SEL(watchhi3, MIPS_COP_0_WATCH_HI, 3);
MIPS_RDRW32_COP0_SEL(perfcnt0, MIPS_COP_0_PERFCNT, 0);
MIPS_RDRW32_COP0_SEL(perfcnt1, MIPS_COP_0_PERFCNT, 1);
MIPS_RDRW32_COP0_SEL(perfcnt2, MIPS_COP_0_PERFCNT, 2);
MIPS_RDRW32_COP0_SEL(perfcnt3, MIPS_COP_0_PERFCNT, 3);
#undef MIPS_RDRW32_COP0
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 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_ */
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