From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E4B0C18E5A for ; Mon, 9 Mar 2020 08:59:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2198E21739 for ; Mon, 9 Mar 2020 08:59:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726645AbgCII7F (ORCPT ); Mon, 9 Mar 2020 04:59:05 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:46029 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726449AbgCII7D (ORCPT ); Mon, 9 Mar 2020 04:59:03 -0400 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0298pVgB084602 for ; Mon, 9 Mar 2020 04:59:02 -0400 Received: from e06smtp04.uk.ibm.com (e06smtp04.uk.ibm.com [195.75.94.100]) by mx0b-001b2d01.pphosted.com with ESMTP id 2ym5e1rrkw-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 09 Mar 2020 04:59:02 -0400 Received: from localhost by e06smtp04.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 9 Mar 2020 08:58:56 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0298wspq60620998 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 9 Mar 2020 08:58:54 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C56DDA4040; Mon, 9 Mar 2020 08:58:54 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 57177A404D; Mon, 9 Mar 2020 08:58:52 +0000 (GMT) Received: from bangoria.in.ibm.com (unknown [9.124.31.44]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 9 Mar 2020 08:58:52 +0000 (GMT) From: Ravi Bangoria To: mpe@ellerman.id.au, mikey@neuling.org Cc: apopple@linux.ibm.com, paulus@samba.org, npiggin@gmail.com, christophe.leroy@c-s.fr, naveen.n.rao@linux.vnet.ibm.com, peterz@infradead.org, jolsa@kernel.org, oleg@redhat.com, fweisbec@gmail.com, mingo@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Ravi Bangoria Subject: [PATCH 05/15] powerpc/watchpoint: Provide DAWR number to set_dawr Date: Mon, 9 Mar 2020 14:27:56 +0530 X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200309085806.155823-1-ravi.bangoria@linux.ibm.com> References: <20200309085806.155823-1-ravi.bangoria@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 20030908-0016-0000-0000-000002EE81C7 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20030908-0017-0000-0000-00003351E00E Message-Id: <20200309085806.155823-6-ravi.bangoria@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-03-09_02:2020-03-06,2020-03-09 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 impostorscore=0 priorityscore=1501 adultscore=0 malwarescore=0 phishscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 mlxscore=0 mlxlogscore=826 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003090066 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce new parameter 'nr' to set_dawr() which indicates which DAWR should be programed. Signed-off-by: Ravi Bangoria --- arch/powerpc/include/asm/hw_breakpoint.h | 4 ++-- arch/powerpc/kernel/dawr.c | 15 ++++++++++----- arch/powerpc/kernel/process.c | 2 +- 3 files changed, 13 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h index 741c4f7573c4..c4e797753895 100644 --- a/arch/powerpc/include/asm/hw_breakpoint.h +++ b/arch/powerpc/include/asm/hw_breakpoint.h @@ -101,10 +101,10 @@ static inline bool dawr_enabled(void) { return dawr_force_enable; } -int set_dawr(struct arch_hw_breakpoint *brk); +int set_dawr(struct arch_hw_breakpoint *brk, int nr); #else static inline bool dawr_enabled(void) { return false; } -static inline int set_dawr(struct arch_hw_breakpoint *brk) { return -1; } +static inline int set_dawr(struct arch_hw_breakpoint *brk, int nr) { return -1; } #endif #endif /* __KERNEL__ */ diff --git a/arch/powerpc/kernel/dawr.c b/arch/powerpc/kernel/dawr.c index e91b613bf137..311e51ee09f4 100644 --- a/arch/powerpc/kernel/dawr.c +++ b/arch/powerpc/kernel/dawr.c @@ -16,7 +16,7 @@ bool dawr_force_enable; EXPORT_SYMBOL_GPL(dawr_force_enable); -int set_dawr(struct arch_hw_breakpoint *brk) +int set_dawr(struct arch_hw_breakpoint *brk, int nr) { unsigned long dawr, dawrx, mrd; @@ -39,15 +39,20 @@ int set_dawr(struct arch_hw_breakpoint *brk) if (ppc_md.set_dawr) return ppc_md.set_dawr(dawr, dawrx); - mtspr(SPRN_DAWR0, dawr); - mtspr(SPRN_DAWRX0, dawrx); + if (nr == 0) { + mtspr(SPRN_DAWR0, dawr); + mtspr(SPRN_DAWRX0, dawrx); + } else { + mtspr(SPRN_DAWR1, dawr); + mtspr(SPRN_DAWRX1, dawrx); + } return 0; } static void set_dawr_cb(void *info) { - set_dawr(info); + set_dawr(info, 0); } static ssize_t dawr_write_file_bool(struct file *file, @@ -60,7 +65,7 @@ static ssize_t dawr_write_file_bool(struct file *file, /* Send error to user if they hypervisor won't allow us to write DAWR */ if (!dawr_force_enable && firmware_has_feature(FW_FEATURE_LPAR) && - set_dawr(&null_brk) != H_SUCCESS) + set_dawr(&null_brk, 0) != H_SUCCESS) return -ENODEV; rc = debugfs_write_file_bool(file, user_buf, count, ppos); diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 6d4b029532e2..0657b3a3792a 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -799,7 +799,7 @@ void __set_breakpoint(struct arch_hw_breakpoint *brk) if (dawr_enabled()) // Power8 or later - set_dawr(brk); + set_dawr(brk, 0); else if (IS_ENABLED(CONFIG_PPC_8xx)) set_breakpoint_8xx(brk); else if (!cpu_has_feature(CPU_FTR_ARCH_207S)) -- 2.21.1