87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/* SPDX-License-Identifier: X11 OR MIT OR AGPL-3.0-or-later
|
|
*
|
|
* @brief platform/architecture specific memory barrier functions
|
|
*
|
|
* Copyright © 2026 Enrico Weigelt, metux IT consult <info@metux.net>
|
|
*/
|
|
#ifndef __XLIBRE_SDK_MEMBARRIER_H
|
|
#define __XLIBRE_SDK_MEMBARRIER_H
|
|
|
|
__attribute__((always_inline)) static inline void xlibre_mem_barrier_read(void)
|
|
{
|
|
#ifdef __i386__
|
|
# ifdef __SSE2__
|
|
__asm__ __volatile__ ("mfence" : : : "memory");
|
|
# else
|
|
__asm__ __volatile__ ("lock; addl $0,0(%%esp)" : : : "memory");
|
|
# endif
|
|
#elif defined __alpha__
|
|
__asm__ __volatile__ ("mb" : : : "memory");
|
|
#elif defined __amd64__
|
|
__asm__ __volatile__ ("mfence" : : : "memory");
|
|
#elif defined __ia64__
|
|
__asm__ __volatile__ ("mf" : : : "memory");
|
|
#elif defined __mips__
|
|
__asm__ __volatile__(
|
|
".set push\n\t"
|
|
".set noreorder\n\t"
|
|
".set mips2\n\t"
|
|
"sync\n\t"
|
|
".set pop"
|
|
: /* no output */
|
|
: /* no input */
|
|
: "memory");
|
|
#elif defined __powerpc__
|
|
# if defined(__powerpc64__) || !defined(__has_builtin) || !__has_builtin(__builtin_ppc_eieio)
|
|
__asm__ __volatile__ ("eieio" : : : "memory");
|
|
# else
|
|
__builtin_ppc_eieio();
|
|
# endif
|
|
#elif defined __sparc__
|
|
/* NOP */
|
|
#endif
|
|
}
|
|
|
|
__attribute__((always_inline)) static inline void xlibre_mem_barrier_write(void)
|
|
{
|
|
#ifdef __i386__
|
|
#ifdef __SSE__
|
|
__asm__ __volatile__ ("sfence" : : : "memory");
|
|
#else
|
|
__asm__ __volatile__ ("lock; addl $0,0(%%esp)" : : : "memory");
|
|
#endif
|
|
#elif defined __alpha__
|
|
__asm__ __volatile__ ("wmb" : : : "memory");
|
|
#elif defined __amd64__
|
|
__asm__ __volatile__ ("sfence" : : : "memory");
|
|
#elif defined __ia64__
|
|
__asm__ __volatile__ ("mf" : : : "memory");
|
|
#elif defined __mips__
|
|
xlibre_mem_barrier_read();
|
|
#elif defined __powerpc__
|
|
# if defined(__powerpc64__) || !defined(__has_builtin) || !__has_builtin(__builtin_ppc_eieio)
|
|
__asm__ __volatile__ ("eieio" : : : "memory");
|
|
# else
|
|
__builtin_ppc_eieio();
|
|
# endif
|
|
#elif defined __sparc__
|
|
/* NOP */
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* @deprecated just backwards compat with older drivers - will be removed in ABI-26
|
|
*/
|
|
__attribute__((always_inline)) static inline void mem_barrier(void) {
|
|
xlibre_mem_barrier_read();
|
|
}
|
|
|
|
/*
|
|
* @deprecated just backwards compat with older drivers - will be removed in ABI-26
|
|
*/
|
|
__attribute__((always_inline)) static inline void write_mem_barrier(void) {
|
|
xlibre_mem_barrier_write();
|
|
}
|
|
|
|
#endif /* __XLIBRE_SDK_MEMBARRIER_H */
|