From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- tools/arch/sh/include/asm/barrier.h | 33 +++++++++++++++++++++++++++++++++ tools/arch/sh/include/uapi/asm/mman.h | 7 +++++++ 2 files changed, 40 insertions(+) create mode 100644 tools/arch/sh/include/asm/barrier.h create mode 100644 tools/arch/sh/include/uapi/asm/mman.h (limited to 'tools/arch/sh') diff --git a/tools/arch/sh/include/asm/barrier.h b/tools/arch/sh/include/asm/barrier.h new file mode 100644 index 000000000..bde5221af --- /dev/null +++ b/tools/arch/sh/include/asm/barrier.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copied from the kernel sources: + * + * Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima + * Copyright (C) 2002 Paul Mundt + */ +#ifndef __TOOLS_LINUX_ASM_SH_BARRIER_H +#define __TOOLS_LINUX_ASM_SH_BARRIER_H + +/* + * A brief note on ctrl_barrier(), the control register write barrier. + * + * Legacy SH cores typically require a sequence of 8 nops after + * modification of a control register in order for the changes to take + * effect. On newer cores (like the sh4a and sh5) this is accomplished + * with icbi. + * + * Also note that on sh4a in the icbi case we can forego a synco for the + * write barrier, as it's not necessary for control registers. + * + * Historically we have only done this type of barrier for the MMUCR, but + * it's also necessary for the CCR, so we make it generic here instead. + */ +#if defined(__SH4A__) || defined(__SH5__) +#define mb() __asm__ __volatile__ ("synco": : :"memory") +#define rmb() mb() +#define wmb() mb() +#endif + +#include + +#endif /* __TOOLS_LINUX_ASM_SH_BARRIER_H */ diff --git a/tools/arch/sh/include/uapi/asm/mman.h b/tools/arch/sh/include/uapi/asm/mman.h new file mode 100644 index 000000000..88c0e2930 --- /dev/null +++ b/tools/arch/sh/include/uapi/asm/mman.h @@ -0,0 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef TOOLS_ARCH_SH_UAPI_ASM_MMAN_FIX_H +#define TOOLS_ARCH_SH_UAPI_ASM_MMAN_FIX_H +#include +/* MAP_32BIT is undefined on sh, fix it for perf */ +#define MAP_32BIT 0 +#endif -- cgit v1.2.3