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/* $OpenBSD: psl.h,v 1.19 2005/06/29 07:17:22 deraadt Exp $ */
/* $NetBSD: psl.h,v 1.20 2001/04/13 23:30:05 thorpej Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)psl.h 8.1 (Berkeley) 6/11/93
*/
#ifndef _SPARC64_PSL_
#define _SPARC64_PSL_
/* Interesting spl()s */
#define PIL_SCSI 3
#define PIL_FDSOFT 4
#define PIL_AUSOFT 4
#define PIL_BIO 5
#define PIL_VIDEO 5
#define PIL_TTY 6
#define PIL_LPT 6
#define PIL_NET 6
#define PIL_VM 7
#define PIL_AUD 8
#define PIL_CLOCK 10
#define PIL_FD 11
#define PIL_SER 12
#define PIL_STATCLOCK 14
#define PIL_HIGH 15
#define PIL_SCHED PIL_STATCLOCK
#define PIL_LOCK PIL_HIGH
/*
* SPARC V9 CCR register
*/
#define ICC_C 0x01L
#define ICC_V 0x02L
#define ICC_Z 0x04L
#define ICC_N 0x08L
#define XCC_SHIFT 4
#define XCC_C (ICC_C<<XCC_SHIFT)
#define XCC_V (ICC_V<<XCC_SHIFT)
#define XCC_Z (ICC_Z<<XCC_SHIFT)
#define XCC_N (ICC_N<<XCC_SHIFT)
/*
* SPARC V9 PSTATE register (what replaces the PSR in V9)
*
* Here's the layout:
*
* 11 10 9 8 7 6 5 4 3 2 1 0
* +------------------------------------------------------------+
* | IG | MG | CLE | TLE | MM | RED | PEF | AM | PRIV | IE | AG |
* +------------------------------------------------------------+
*/
#define PSTATE_IG 0x800 /* enable spitfire interrupt globals */
#define PSTATE_MG 0x400 /* enable spitfire MMU globals */
#define PSTATE_CLE 0x200 /* current little endian */
#define PSTATE_TLE 0x100 /* traps little endian */
#define PSTATE_MM 0x0c0 /* memory model */
#define PSTATE_MM_TSO 0x000 /* total store order */
#define PSTATE_MM_PSO 0x040 /* partial store order */
#define PSTATE_MM_RMO 0x080 /* Relaxed memory order */
#define PSTATE_RED 0x020 /* RED state */
#define PSTATE_PEF 0x010 /* enable floating point */
#define PSTATE_AM 0x008 /* 32-bit address masking */
#define PSTATE_PRIV 0x004 /* privileged mode */
#define PSTATE_IE 0x002 /* interrupt enable */
#define PSTATE_AG 0x001 /* enable alternate globals */
#define PSTATE_BITS "\20\14IG\13MG\12CLE\11TLE\10\7MM\6RED\5PEF\4AM\3PRIV\2IE\1AG"
/*
* 32-bit code requires TSO or at best PSO since that's what's supported on
* SPARC V8 and earlier machines.
*
* 64-bit code sets the memory model in the ELF header.
*
* We're running kernel code in TSO for the moment so we don't need to worry
* about possible memory barrier bugs.
*/
#define PSTATE_PROM (PSTATE_MM_TSO|PSTATE_PRIV)
#define PSTATE_NUCLEUS (PSTATE_MM_TSO|PSTATE_PRIV|PSTATE_AG)
#define PSTATE_KERN (PSTATE_MM_TSO|PSTATE_PRIV)
#define PSTATE_INTR (PSTATE_KERN|PSTATE_IE)
#define PSTATE_USER32 (PSTATE_MM_TSO|PSTATE_AM|PSTATE_IE)
#define PSTATE_USER (PSTATE_MM_RMO|PSTATE_IE)
/*
* SPARC V9 TSTATE register
*
* 39 32 31 24 23 18 17 8 7 5 4 0
* +-----+-----+-----+--------+---+-----+
* | CCR | ASI | - | PSTATE | - | CWP |
* +-----+-----+-----+--------+---+-----+
*/
#define TSTATE_CWP 0x01f
#define TSTATE_PSTATE 0x6ff00
#define TSTATE_PSTATE_SHIFT 8
#define TSTATE_ASI 0xff000000LL
#define TSTATE_ASI_SHIFT 24
#define TSTATE_CCR 0xff00000000LL
#define TSTATE_CCR_SHIFT 32
/* Leftover SPARC V8 PSTATE stuff */
#define PSR_ICC 0x00f00000
#define PSRCC_TO_TSTATE(x) (((int64_t)(x)&PSR_ICC)<<(TSTATE_CCR_SHIFT-19))
#define TSTATECCR_TO_PSR(x) (((x)&TSTATE_CCR)>>(TSTATE_CCR_SHIFT-19))
/*
* These are here to simplify life.
*/
#define TSTATE_IG (PSTATE_IG<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MG (PSTATE_MG<<TSTATE_PSTATE_SHIFT)
#define TSTATE_CLE (PSTATE_CLE<<TSTATE_PSTATE_SHIFT)
#define TSTATE_TLE (PSTATE_TLE<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MM (PSTATE_MM<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MM_TSO (PSTATE_MM_TSO<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MM_PSO (PSTATE_MM_PSO<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MM_RMO (PSTATE_MM_RMO<<TSTATE_PSTATE_SHIFT)
#define TSTATE_RED (PSTATE_RED<<TSTATE_PSTATE_SHIFT)
#define TSTATE_PEF (PSTATE_PEF<<TSTATE_PSTATE_SHIFT)
#define TSTATE_AM (PSTATE_AM<<TSTATE_PSTATE_SHIFT)
#define TSTATE_PRIV (PSTATE_PRIV<<TSTATE_PSTATE_SHIFT)
#define TSTATE_IE (PSTATE_IE<<TSTATE_PSTATE_SHIFT)
#define TSTATE_AG (PSTATE_AG<<TSTATE_PSTATE_SHIFT)
#define TSTATE_BITS "\20\14IG\13MG\12CLE\11TLE\10\7MM\6RED\5PEF\4AM\3PRIV\2IE\1AG"
#define TSTATE_KERN ((PSTATE_KERN)<<TSTATE_PSTATE_SHIFT)
#define TSTATE_USER ((PSTATE_USER)<<TSTATE_PSTATE_SHIFT)
/*
* SPARC V9 VER version register.
*
* 63 48 47 32 31 24 23 16 15 8 7 5 4 0
* +-------+------+------+-----+-------+---+--------+
* | manuf | impl | mask | - | maxtl | - | maxwin |
* +-------+------+------+-----+-------+---+--------+
*
*/
#define VER_MANUF 0xffff000000000000ULL
#define VER_MANUF_SHIFT 48
#define VER_IMPL 0x0000ffff00000000ULL
#define VER_IMPL_SHIFT 32
#define VER_MASK 0x00000000ff000000ULL
#define VER_MASK_SHIFT 24
#define VER_MAXTL 0x000000000000ff00ULL
#define VER_MAXTL_SHIFT 8
#define VER_MAXWIN 0x000000000000001fULL
/*
* Here are a few things to help us transition between user and kernel mode:
*/
/* Memory models */
#define KERN_MM PSTATE_MM_TSO
#define USER_MM PSTATE_MM_RMO
/*
* Register window handlers. These point to generic routines that check the
* stack pointer and then vector to the real handler. We could optimize this
* if we could guarantee only 32-bit or 64-bit stacks.
*/
#define WSTATE_KERN 026
#define WSTATE_USER 022
#define CWP 0x01f
/* 64-byte alignment -- this seems the best place to put this. */
#define BLOCK_SIZE 64
#define BLOCK_ALIGN 0x3f
#if defined(_KERNEL) && !defined(_LOCORE)
extern u_int64_t ver; /* Copy of v9 version register. We need to read this only once, in locore.s. */
#ifndef SPLDEBUG
extern __inline void splx(int);
#endif
#ifdef DIAGNOSTIC
/*
* Although this function is implemented in MI code, it must be in this MD
* header because we don't want this header to include MI includes.
*/
void splassert_fail(int, int, const char *);
extern int splassert_ctl;
void splassert_check(int, const char *);
#define splassert(__wantipl) do { \
if (__predict_false(splassert_ctl > 0)) { \
splassert_check(__wantipl, __func__); \
} \
} while (0)
#else
#define splassert(wantipl) do { /* nada */ } while (0)
#endif
/*
* GCC pseudo-functions for manipulating privileged registers
*/
extern __inline u_int64_t getpstate(void);
extern __inline
u_int64_t getpstate()
{
return (sparc_rdpr(pstate));
}
extern __inline void setpstate(u_int64_t);
extern __inline void setpstate(u_int64_t newpstate)
{
sparc_wrpr(pstate, newpstate, 0);
}
extern __inline int getcwp(void);
extern __inline
int getcwp()
{
return (sparc_rdpr(cwp));
}
extern __inline void setcwp(u_int64_t);
extern __inline void
setcwp(u_int64_t newcwp)
{
sparc_wrpr(cwp, newcwp, 0);
}
extern __inline u_int64_t getver(void);
extern __inline
u_int64_t getver()
{
return (sparc_rdpr(ver));
}
extern __inline u_int64_t intr_disable(void);
extern __inline u_int64_t
intr_disable()
{
u_int64_t s;
s = sparc_rdpr(pstate);
sparc_wrpr(pstate, s & ~PSTATE_IE, 0);
return (s);
}
extern __inline void intr_restore(u_int64_t);
extern __inline void
intr_restore(u_int64_t s)
{
sparc_wrpr(pstate, s, 0);
}
extern __inline void stxa_sync(u_int64_t, u_int64_t, u_int64_t);
extern __inline void
stxa_sync(u_int64_t va, u_int64_t asi, u_int64_t val)
{
u_int64_t s = intr_disable();
stxa_nc(va, asi, val);
membar(Sync);
intr_restore(s);
}
/*
* GCC pseudo-functions for manipulating PIL
*/
#ifdef SPLDEBUG
void prom_printf(const char *fmt, ...);
extern int printspl;
#define SPLPRINT(x) if(printspl) { int i=10000000; prom_printf x ; while(i--); }
#define SPL(name, newpil) \
extern __inline int name##X(const char *, int); \
extern __inline int name##X(const char *file, int line) \
{ \
u_int64_t oldpil = sparc_rdpr(pil); \
SPLPRINT(("{%s:%d %d=>%d}", file, line, oldpil, newpil)); \
sparc_wrpr(pil, newpil, 0); \
return (oldpil); \
}
/* A non-priority-decreasing version of SPL */
#define SPLHOLD(name, newpil) \
extern __inline int name##X(const char *, int); \
extern __inline int name##X(const char * file, int line) \
{ \
int oldpil = sparc_rdpr(pil); \
if (__predict_false((u_int64_t)newpil <= oldpil)) \
return (oldpil); \
SPLPRINT(("{%s:%d %d->!d}", file, line, oldpil, newpil)); \
sparc_wrpr(pil, newpil, 0); \
return (oldpil); \
}
#else
#define SPLPRINT(x)
#define SPL(name, newpil) \
extern __inline int name(void); \
extern __inline int name() \
{ \
int oldpil; \
__asm __volatile(" rdpr %%pil, %0 \n" \
" wrpr %%g0, %1, %%pil \n" \
: "=&r" (oldpil) \
: "n" (newpil) \
: "%g0"); \
return (oldpil); \
}
/* A non-priority-decreasing version of SPL */
#define SPLHOLD(name, newpil) \
extern __inline int name(void); \
extern __inline int name() \
{ \
int oldpil; \
\
if (newpil <= 1) { \
__asm __volatile(" rdpr %%pil, %0 \n" \
" brnz,pn %0, 1f \n" \
" nop \n" \
" wrpr %%g0, %1, %%pil \n" \
"1: \n" \
: "=&r" (oldpil) \
: "I" (newpil) \
: "%g0"); \
} else { \
__asm __volatile(" rdpr %%pil, %0 \n" \
" cmp %0, %1 - 1 \n" \
" bgu,pn %%xcc, 1f \n" \
" nop \n" \
" wrpr %%g0, %1, %%pil \n" \
"1: \n" \
: "=&r" (oldpil) \
: "I" (newpil) \
: "cc"); \
} \
return (oldpil); \
}
#endif
SPL(spl0, 0)
SPLHOLD(splsoftint, 1)
#define splsoftclock splsoftint
#define splsoftnet splsoftint
/* audio software interrupts are at software level 4 */
SPLHOLD(splausoft, PIL_AUSOFT)
/* floppy software interrupts are at software level 4 too */
SPLHOLD(splfdsoft, PIL_FDSOFT)
/* Block devices */
SPLHOLD(splbio, PIL_BIO)
/* network hardware interrupts are at level 6 */
SPLHOLD(splnet, PIL_NET)
/* tty input runs at software level 6 */
SPLHOLD(spltty, PIL_TTY)
/* parallel port runs at software level 6 */
SPLHOLD(spllpt, PIL_LPT)
/*
* Memory allocation (must be as high as highest network, tty, or disk device)
*/
SPLHOLD(splvm, PIL_VM)
#define splimp splvm
SPLHOLD(splclock, PIL_CLOCK)
/* fd hardware interrupts are at level 11 */
SPLHOLD(splfd, PIL_FD)
/* zs hardware interrupts are at level 12 */
SPLHOLD(splzs, PIL_SER)
SPLHOLD(splserial, PIL_SER)
/* audio hardware interrupts are at level 13 */
SPLHOLD(splaudio, PIL_AUD)
/* second sparc timer interrupts at level 14 */
SPLHOLD(splstatclock, PIL_STATCLOCK)
SPLHOLD(splsched, PIL_SCHED)
SPLHOLD(spllock, PIL_LOCK)
SPLHOLD(splhigh, PIL_HIGH)
/* splx does not have a return value */
#ifdef SPLDEBUG
#define spl0() spl0X(__FILE__, __LINE__)
#define splsoftint() splsoftintX(__FILE__, __LINE__)
#define splausoft() splausoftX(__FILE__, __LINE__)
#define splfdsoft() splfdsoftX(__FILE__, __LINE__)
#define splbio() splbioX(__FILE__, __LINE__)
#define splnet() splnetX(__FILE__, __LINE__)
#define spltty() splttyX(__FILE__, __LINE__)
#define spllpt() spllptX(__FILE__, __LINE__)
#define splvm() splvmX(__FILE__, __LINE__)
#define splclock() splclockX(__FILE__, __LINE__)
#define splfd() splfdX(__FILE__, __LINE__)
#define splzs() splzsX(__FILE__, __LINE__)
#define splserial() splzerialX(__FILE__, __LINE__)
#define splaudio() splaudioX(__FILE__, __LINE__)
#define splstatclock() splstatclockX(__FILE__, __LINE__)
#define splsched() splschedX(__FILE__, __LINE__)
#define spllock() spllockX(__FILE__, __LINE__)
#define splhigh() splhighX(__FILE__, __LINE__)
#define splx(x) splxX((x),__FILE__, __LINE__)
extern __inline void splxX(u_int64_t, const char *, int);
extern __inline void
splxX(u_int64_t newpil, const char *file, int line)
#else
extern __inline void splx(int newpil)
#endif
{
#ifdef SPLDEBUG
u_int64_t oldpil = sparc_rdpr(pil);
SPLPRINT(("{%d->%d}", oldpil, newpil));
#endif
sparc_wrpr(pil, newpil, 0);
}
#endif /* KERNEL && !_LOCORE */
#endif /* _SPARC64_PSL_ */
|
