From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-002e3701.pphosted.com (mx0b-002e3701.pphosted.com [148.163.143.35]) by mx.groups.io with SMTP id smtpd.web10.558.1572229908275010776 for ; Sun, 27 Oct 2019 19:31:48 -0700 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: hpe.com, ip: 148.163.143.35, mailfrom: prvs=02044412f4=abner.chang@hpe.com) Received: from pps.filterd (m0134425.ppops.net [127.0.0.1]) by mx0b-002e3701.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x9S2ViQU015245; Mon, 28 Oct 2019 02:31:45 GMT Received: from g9t5008.houston.hpe.com (g9t5008.houston.hpe.com [15.241.48.72]) by mx0b-002e3701.pphosted.com with ESMTP id 2vvynnms7c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 28 Oct 2019 02:31:45 +0000 Received: from g4t3433.houston.hpecorp.net (g4t3433.houston.hpecorp.net [16.208.49.245]) by g9t5008.houston.hpe.com (Postfix) with ESMTP id EFF5568; Mon, 28 Oct 2019 02:31:35 +0000 (UTC) Received: from UB16Abner.asiapacific.hpqcorp.net (ub16abner.asiapacific.hpqcorp.net [15.119.209.229]) by g4t3433.houston.hpecorp.net (Postfix) with ESMTP id 2CFD647; Mon, 28 Oct 2019 02:31:33 +0000 (UTC) From: "Abner Chang" To: devel@edk2.groups.io Cc: abner.chang@hpe.com, Michael D Kinney , Liming Gao , Leif Lindholm , Gilbert Chen Subject: [edk2-staging/RISC-V-V2 PATCH v3 12/39] MdePkg/BaseSynchronizationLib: RISC-V cache related code. Date: Mon, 28 Oct 2019 09:58:50 +0800 Message-Id: <1572227957-13169-13-git-send-email-abner.chang@hpe.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1572227957-13169-1-git-send-email-abner.chang@hpe.com> References: <1572227957-13169-1-git-send-email-abner.chang@hpe.com> X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,1.0.8 definitions=2019-10-27_09:2019-10-25,2019-10-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxlogscore=673 adultscore=0 impostorscore=0 spamscore=0 mlxscore=0 phishscore=0 bulkscore=0 suspectscore=1 priorityscore=1501 malwarescore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1908290000 definitions=main-1910280025 Support RISC-V cache related functions. Signed-off-by: Abner Chang Cc: Michael D Kinney Cc: Liming Gao Cc: Leif Lindholm Cc: Gilbert Chen --- .../BaseSynchronizationLib.inf | 5 ++ .../RiscV64/SynchronizationAsm.S | 78 ++++++++++++++++++++++ 2 files changed, 83 insertions(+) create mode 100644 MdePkg/Library/BaseSynchronizationLib/RiscV64/SynchronizationAsm.S diff --git a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf index 446bc19..c227f0c 100755 --- a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf +++ b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf @@ -3,6 +3,7 @@ # # Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
+# Copyright (c) 2016 - 2019, Hewlett Packard Enterprise Development LP. All rights reserved.
# # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -78,6 +79,10 @@ AArch64/Synchronization.S | GCC AArch64/Synchronization.asm | MSFT +[Sources.RISCV64] + Synchronization.c + RiscV64/SynchronizationAsm.S + [Packages] MdePkg/MdePkg.dec diff --git a/MdePkg/Library/BaseSynchronizationLib/RiscV64/SynchronizationAsm.S b/MdePkg/Library/BaseSynchronizationLib/RiscV64/SynchronizationAsm.S new file mode 100644 index 0000000..40a9f1e --- /dev/null +++ b/MdePkg/Library/BaseSynchronizationLib/RiscV64/SynchronizationAsm.S @@ -0,0 +1,78 @@ +//------------------------------------------------------------------------------ +// +// RISC-V synchronization functions. +// +// Copyright (c) 2016 - 2019, Hewlett Packard Enterprise Development LP. All rights reserved.
+// +// SPDX-License-Identifier: BSD-2-Clause-Patent +// +//------------------------------------------------------------------------------ +#include + +.data + +.text +.align 3 + +.global ASM_PFX(InternalSyncCompareExchange32) +.global ASM_PFX(InternalSyncCompareExchange64) +.global ASM_PFX(InternalSyncIncrement) +.global ASM_PFX(InternalSyncDecrement) + +// +// ompare and xchange a 32-bit value. +// +// @param a0 : Pointer to 32-bit value. +// @param a1 : Compare value. +// @param a2 : Exchange value. +// +ASM_PFX (InternalSyncCompareExchange32): + lr.w a3, (a0) // Load the value from a0 and make + // the reservation of address. + bne a3, a1, exit + sc.w a3, a2, (a0) // Write the value back to the address. + mv a3, a1 +exit: + mv a0, a3 + ret + +.global ASM_PFX(InternalSyncCompareExchange64) + +// +// Compare and xchange a 64-bit value. +// +// @param a0 : Pointer to 64-bit value. +// @param a1 : Compare value. +// @param a2 : Exchange value. +// +ASM_PFX (SyncCompareExchange64): + lr.d a3, (a0) // Load the value from a0 and make + // the reservation of address. + bne a3, a1, exit + sc.d a3, a2, (a0) // Write the value back to the address. + mv a3, a1 +exit2: + mv a0, a3 + ret + +// +// Performs an atomic increment of an 32-bit unsigned integer. +// +// @param a0 : Pointer to 32-bit value. +// +ASM_PFX (InternalSyncIncrement): + li a1, 1 + amoadd.w a2, a1, (a0) + mv a0, a2 + ret + +// +// Performs an atomic decrement of an 32-bit unsigned integer. +// +// @param a0 : Pointer to 32-bit value. +// +ASM_PFX (InternalSyncDecrement): + li a1, -1 + amoadd.w a2, a1, (a0) + mv a0, a2 + ret -- 2.7.4