488570ebd4
Many open source projects have moved to using SPDX identifiers to specify license information, reducing the amount of boilerplate code in every source file. This patch replaces the bulk of SPDK .c, .cpp and Makefiles with the BSD-3-Clause identifier. Almost all of these files share the exact same license text, and this patch only modifies the files that contain the most common license text. There can be slight variations because the third clause contains company names - most say "Intel Corporation", but there are instances for Nvidia, Samsung, Eideticom and even "the copyright holder". Used a bash script to automate replacement of the license text with SPDX identifier which is checked into scripts/spdx.sh. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Iaa88ab5e92ea471691dc298cfe41ebfb5d169780 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12904 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Dong Yi <dongx.yi@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: <qun.wan@intel.com>
106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) Intel Corporation.
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* Copyright (c) 2017, IBM Corporation.
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* All rights reserved.
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*/
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/** \file
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* Memory barriers
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*/
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#ifndef SPDK_BARRIER_H
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#define SPDK_BARRIER_H
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#include "spdk/stdinc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Compiler memory barrier */
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#define spdk_compiler_barrier() __asm volatile("" ::: "memory")
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/** Read memory barrier */
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#define spdk_rmb() _spdk_rmb()
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/** Write memory barrier */
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#define spdk_wmb() _spdk_wmb()
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/** Full read/write memory barrier */
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#define spdk_mb() _spdk_mb()
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/** SMP read memory barrier. */
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#define spdk_smp_rmb() _spdk_smp_rmb()
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/** SMP write memory barrier. */
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#define spdk_smp_wmb() _spdk_smp_wmb()
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/** SMP read/write memory barrier. */
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#define spdk_smp_mb() _spdk_smp_mb()
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/** Invalidate data cache, input is data pointer */
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#define spdk_ivdt_dcache(pdata) _spdk_ivdt_dcache(pdata)
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#ifdef __PPC64__
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#define _spdk_rmb() __asm volatile("sync" ::: "memory")
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#define _spdk_wmb() __asm volatile("sync" ::: "memory")
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#define _spdk_mb() __asm volatile("sync" ::: "memory")
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#define _spdk_smp_rmb() __asm volatile("lwsync" ::: "memory")
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#define _spdk_smp_wmb() __asm volatile("lwsync" ::: "memory")
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#define _spdk_smp_mb() spdk_mb()
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#define _spdk_ivdt_dcache(pdata)
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#elif defined(__aarch64__)
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#define _spdk_rmb() __asm volatile("dsb ld" ::: "memory")
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#define _spdk_wmb() __asm volatile("dsb st" ::: "memory")
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#define _spdk_mb() __asm volatile("dsb sy" ::: "memory")
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#define _spdk_smp_rmb() __asm volatile("dmb ishld" ::: "memory")
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#define _spdk_smp_wmb() __asm volatile("dmb ishst" ::: "memory")
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#define _spdk_smp_mb() __asm volatile("dmb ish" ::: "memory")
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#define _spdk_ivdt_dcache(pdata) asm volatile("dc civac, %0" : : "r"(pdata) : "memory");
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#elif defined(__i386__) || defined(__x86_64__)
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#define _spdk_rmb() __asm volatile("lfence" ::: "memory")
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#define _spdk_wmb() __asm volatile("sfence" ::: "memory")
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#define _spdk_mb() __asm volatile("mfence" ::: "memory")
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#define _spdk_smp_rmb() spdk_compiler_barrier()
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#define _spdk_smp_wmb() spdk_compiler_barrier()
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#if defined(__x86_64__)
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#define _spdk_smp_mb() __asm volatile("lock addl $0, -128(%%rsp); " ::: "memory");
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#elif defined(__i386__)
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#define _spdk_smp_mb() __asm volatile("lock addl $0, -128(%%esp); " ::: "memory");
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#endif
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#define _spdk_ivdt_dcache(pdata)
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#elif defined(__riscv)
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#define _spdk_rmb() __asm__ __volatile__("fence ir, ir" ::: "memory")
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#define _spdk_wmb() __asm__ __volatile__("fence ow, ow" ::: "memory")
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#define _spdk_mb() __asm__ __volatile__("fence iorw, iorw" ::: "memory")
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#define _spdk_smp_rmb() __asm__ __volatile__("fence r, r" ::: "memory")
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#define _spdk_smp_wmb() __asm__ __volatile__("fence w, w" ::: "memory")
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#define _spdk_smp_mb() __asm__ __volatile__("fence rw, rw" ::: "memory")
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#define _spdk_ivdt_dcache(pdata)
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#else
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#define _spdk_rmb()
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#define _spdk_wmb()
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#define _spdk_mb()
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#define _spdk_smp_rmb()
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#define _spdk_smp_wmb()
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#define _spdk_smp_mb()
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#define _spdk_ivdt_dcache(pdata)
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#error Unknown architecture
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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