mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 12:52:30 +00:00
4914d7b458
QEMU provides a high-resolution timer and alarm; use this for a clock source and clock event source when available. Signed-off-by: Richard Henderson <rth@twiddle.net>
187 lines
5.0 KiB
C
187 lines
5.0 KiB
C
#ifndef __ALPHA_PAL_H
|
|
#define __ALPHA_PAL_H
|
|
|
|
#include <uapi/asm/pal.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
extern void halt(void) __attribute__((noreturn));
|
|
#define __halt() __asm__ __volatile__ ("call_pal %0 #halt" : : "i" (PAL_halt))
|
|
|
|
#define imb() \
|
|
__asm__ __volatile__ ("call_pal %0 #imb" : : "i" (PAL_imb) : "memory")
|
|
|
|
#define draina() \
|
|
__asm__ __volatile__ ("call_pal %0 #draina" : : "i" (PAL_draina) : "memory")
|
|
|
|
#define __CALL_PAL_R0(NAME, TYPE) \
|
|
extern inline TYPE NAME(void) \
|
|
{ \
|
|
register TYPE __r0 __asm__("$0"); \
|
|
__asm__ __volatile__( \
|
|
"call_pal %1 # " #NAME \
|
|
:"=r" (__r0) \
|
|
:"i" (PAL_ ## NAME) \
|
|
:"$1", "$16", "$22", "$23", "$24", "$25"); \
|
|
return __r0; \
|
|
}
|
|
|
|
#define __CALL_PAL_W1(NAME, TYPE0) \
|
|
extern inline void NAME(TYPE0 arg0) \
|
|
{ \
|
|
register TYPE0 __r16 __asm__("$16") = arg0; \
|
|
__asm__ __volatile__( \
|
|
"call_pal %1 # "#NAME \
|
|
: "=r"(__r16) \
|
|
: "i"(PAL_ ## NAME), "0"(__r16) \
|
|
: "$1", "$22", "$23", "$24", "$25"); \
|
|
}
|
|
|
|
#define __CALL_PAL_W2(NAME, TYPE0, TYPE1) \
|
|
extern inline void NAME(TYPE0 arg0, TYPE1 arg1) \
|
|
{ \
|
|
register TYPE0 __r16 __asm__("$16") = arg0; \
|
|
register TYPE1 __r17 __asm__("$17") = arg1; \
|
|
__asm__ __volatile__( \
|
|
"call_pal %2 # "#NAME \
|
|
: "=r"(__r16), "=r"(__r17) \
|
|
: "i"(PAL_ ## NAME), "0"(__r16), "1"(__r17) \
|
|
: "$1", "$22", "$23", "$24", "$25"); \
|
|
}
|
|
|
|
#define __CALL_PAL_RW1(NAME, RTYPE, TYPE0) \
|
|
extern inline RTYPE NAME(TYPE0 arg0) \
|
|
{ \
|
|
register RTYPE __r0 __asm__("$0"); \
|
|
register TYPE0 __r16 __asm__("$16") = arg0; \
|
|
__asm__ __volatile__( \
|
|
"call_pal %2 # "#NAME \
|
|
: "=r"(__r16), "=r"(__r0) \
|
|
: "i"(PAL_ ## NAME), "0"(__r16) \
|
|
: "$1", "$22", "$23", "$24", "$25"); \
|
|
return __r0; \
|
|
}
|
|
|
|
#define __CALL_PAL_RW2(NAME, RTYPE, TYPE0, TYPE1) \
|
|
extern inline RTYPE NAME(TYPE0 arg0, TYPE1 arg1) \
|
|
{ \
|
|
register RTYPE __r0 __asm__("$0"); \
|
|
register TYPE0 __r16 __asm__("$16") = arg0; \
|
|
register TYPE1 __r17 __asm__("$17") = arg1; \
|
|
__asm__ __volatile__( \
|
|
"call_pal %3 # "#NAME \
|
|
: "=r"(__r16), "=r"(__r17), "=r"(__r0) \
|
|
: "i"(PAL_ ## NAME), "0"(__r16), "1"(__r17) \
|
|
: "$1", "$22", "$23", "$24", "$25"); \
|
|
return __r0; \
|
|
}
|
|
|
|
__CALL_PAL_W1(cflush, unsigned long);
|
|
__CALL_PAL_R0(rdmces, unsigned long);
|
|
__CALL_PAL_R0(rdps, unsigned long);
|
|
__CALL_PAL_R0(rdusp, unsigned long);
|
|
__CALL_PAL_RW1(swpipl, unsigned long, unsigned long);
|
|
__CALL_PAL_R0(whami, unsigned long);
|
|
__CALL_PAL_W2(wrent, void*, unsigned long);
|
|
__CALL_PAL_W1(wripir, unsigned long);
|
|
__CALL_PAL_W1(wrkgp, unsigned long);
|
|
__CALL_PAL_W1(wrmces, unsigned long);
|
|
__CALL_PAL_RW2(wrperfmon, unsigned long, unsigned long, unsigned long);
|
|
__CALL_PAL_W1(wrusp, unsigned long);
|
|
__CALL_PAL_W1(wrvptptr, unsigned long);
|
|
__CALL_PAL_RW1(wtint, unsigned long, unsigned long);
|
|
|
|
/*
|
|
* TB routines..
|
|
*/
|
|
#define __tbi(nr,arg,arg1...) \
|
|
({ \
|
|
register unsigned long __r16 __asm__("$16") = (nr); \
|
|
register unsigned long __r17 __asm__("$17"); arg; \
|
|
__asm__ __volatile__( \
|
|
"call_pal %3 #__tbi" \
|
|
:"=r" (__r16),"=r" (__r17) \
|
|
:"0" (__r16),"i" (PAL_tbi) ,##arg1 \
|
|
:"$0", "$1", "$22", "$23", "$24", "$25"); \
|
|
})
|
|
|
|
#define tbi(x,y) __tbi(x,__r17=(y),"1" (__r17))
|
|
#define tbisi(x) __tbi(1,__r17=(x),"1" (__r17))
|
|
#define tbisd(x) __tbi(2,__r17=(x),"1" (__r17))
|
|
#define tbis(x) __tbi(3,__r17=(x),"1" (__r17))
|
|
#define tbiap() __tbi(-1, /* no second argument */)
|
|
#define tbia() __tbi(-2, /* no second argument */)
|
|
|
|
/*
|
|
* QEMU Cserv routines..
|
|
*/
|
|
|
|
static inline unsigned long
|
|
qemu_get_walltime(void)
|
|
{
|
|
register unsigned long v0 __asm__("$0");
|
|
register unsigned long a0 __asm__("$16") = 3;
|
|
|
|
asm("call_pal %2 # cserve get_time"
|
|
: "=r"(v0), "+r"(a0)
|
|
: "i"(PAL_cserve)
|
|
: "$17", "$18", "$19", "$20", "$21");
|
|
|
|
return v0;
|
|
}
|
|
|
|
static inline unsigned long
|
|
qemu_get_alarm(void)
|
|
{
|
|
register unsigned long v0 __asm__("$0");
|
|
register unsigned long a0 __asm__("$16") = 4;
|
|
|
|
asm("call_pal %2 # cserve get_alarm"
|
|
: "=r"(v0), "+r"(a0)
|
|
: "i"(PAL_cserve)
|
|
: "$17", "$18", "$19", "$20", "$21");
|
|
|
|
return v0;
|
|
}
|
|
|
|
static inline void
|
|
qemu_set_alarm_rel(unsigned long expire)
|
|
{
|
|
register unsigned long a0 __asm__("$16") = 5;
|
|
register unsigned long a1 __asm__("$17") = expire;
|
|
|
|
asm volatile("call_pal %2 # cserve set_alarm_rel"
|
|
: "+r"(a0), "+r"(a1)
|
|
: "i"(PAL_cserve)
|
|
: "$0", "$18", "$19", "$20", "$21");
|
|
}
|
|
|
|
static inline void
|
|
qemu_set_alarm_abs(unsigned long expire)
|
|
{
|
|
register unsigned long a0 __asm__("$16") = 6;
|
|
register unsigned long a1 __asm__("$17") = expire;
|
|
|
|
asm volatile("call_pal %2 # cserve set_alarm_abs"
|
|
: "+r"(a0), "+r"(a1)
|
|
: "i"(PAL_cserve)
|
|
: "$0", "$18", "$19", "$20", "$21");
|
|
}
|
|
|
|
static inline unsigned long
|
|
qemu_get_vmtime(void)
|
|
{
|
|
register unsigned long v0 __asm__("$0");
|
|
register unsigned long a0 __asm__("$16") = 7;
|
|
|
|
asm("call_pal %2 # cserve get_time"
|
|
: "=r"(v0), "+r"(a0)
|
|
: "i"(PAL_cserve)
|
|
: "$17", "$18", "$19", "$20", "$21");
|
|
|
|
return v0;
|
|
}
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
#endif /* __ALPHA_PAL_H */
|