From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=VBhC=OH=lists.ozlabs.org=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@kernel.org>
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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED
	autolearn=unavailable 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 E9553C43441
	for <linuxppc-dev@archiver.kernel.org>; Wed, 28 Nov 2018 09:47:30 +0000 (UTC)
Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mail.kernel.org (Postfix) with ESMTPS id 6E6D620832
	for <linuxppc-dev@archiver.kernel.org>; Wed, 28 Nov 2018 09:47:30 +0000 (UTC)
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6E6D620832
Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-s.fr
Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org
Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])
	by lists.ozlabs.org (Postfix) with ESMTP id 434bRN2ScMzDqM1
	for <linuxppc-dev@archiver.kernel.org>; Wed, 28 Nov 2018 20:47:28 +1100 (AEDT)
Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr
Authentication-Results: lists.ozlabs.org;
 spf=pass (mailfrom) smtp.mailfrom=c-s.fr
 (client-ip=93.17.236.30; helo=pegase1.c-s.fr;
 envelope-from=christophe.leroy@c-s.fr; receiver=<UNKNOWN>)
Authentication-Results: lists.ozlabs.org;
 dmarc=none (p=none dis=none) header.from=c-s.fr
Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by lists.ozlabs.org (Postfix) with ESMTPS id 434b0D0dJgzDqb5
 for <linuxppc-dev@lists.ozlabs.org>; Wed, 28 Nov 2018 20:27:24 +1100 (AEDT)
Received: from localhost (mailhub1-int [192.168.12.234])
 by localhost (Postfix) with ESMTP id 434b080yTgz9vBKJ;
 Wed, 28 Nov 2018 10:27:20 +0100 (CET)
X-Virus-Scanned: Debian amavisd-new at c-s.fr
Received: from pegase1.c-s.fr ([192.168.12.234])
 by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024)
 with ESMTP id YjjvL2ikzmYX; Wed, 28 Nov 2018 10:27:20 +0100 (CET)
Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192])
 by pegase1.c-s.fr (Postfix) with ESMTP id 434b080TWjz9vBK9;
 Wed, 28 Nov 2018 10:27:20 +0100 (CET)
Received: from localhost (localhost [127.0.0.1])
 by messagerie.si.c-s.fr (Postfix) with ESMTP id F0ACF8B85D;
 Wed, 28 Nov 2018 10:27:20 +0100 (CET)
X-Virus-Scanned: amavisd-new at c-s.fr
Received: from messagerie.si.c-s.fr ([127.0.0.1])
 by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023)
 with ESMTP id 8bbXTsbtW2aF; Wed, 28 Nov 2018 10:27:20 +0100 (CET)
Received: from po14163vm.idsi0.si.c-s.fr (po15451.idsi0.si.c-s.fr
 [172.25.231.2])
 by messagerie.si.c-s.fr (Postfix) with ESMTP id D73F68B853;
 Wed, 28 Nov 2018 10:27:20 +0100 (CET)
Received: by po14163vm.idsi0.si.c-s.fr (Postfix, from userid 0)
 id B14D169AFA; Wed, 28 Nov 2018 09:27:20 +0000 (UTC)
Message-Id: <5b09cecccb64a577ee9c0cdef3b294ccd7f2ee70.1543356926.git.christophe.leroy@c-s.fr>
In-Reply-To: <76d777b36e54e7b8d4c196405decc712fc5eaf45.1543356926.git.christophe.leroy@c-s.fr>
References: <76d777b36e54e7b8d4c196405decc712fc5eaf45.1543356926.git.christophe.leroy@c-s.fr>
From: Christophe Leroy <christophe.leroy@c-s.fr>
Subject: [RFC PATCH v2 09/11] powerpc/32: add helper to write into segment
 registers
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
 Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, 
 ruscur@russell.cc
Date: Wed, 28 Nov 2018 09:27:20 +0000 (UTC)
X-BeenThere: linuxppc-dev@lists.ozlabs.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org>
List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>,
 <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>
List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/>
List-Post: <mailto:linuxppc-dev@lists.ozlabs.org>
List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>
List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>,
 <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org
Sender: "Linuxppc-dev"
 <linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org>

This patch add an helper which wraps 'mtsrin' instruction
to write into segment registers.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 arch/powerpc/include/asm/reg.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index d9598e6790d8..6b5d2a61af5a 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -1424,6 +1424,11 @@ static inline void msr_check_and_clear(unsigned long bits)
 #define mfsrin(v)	({unsigned int rval; \
 			asm volatile("mfsrin %0,%1" : "=r" (rval) : "r" (v)); \
 					rval;})
+
+static inline void mtsrin(u32 val, u32 idx)
+{
+	asm volatile("mtsrin %0, %1" : : "r" (val), "r" (idx));
+}
 #endif
 
 #define proc_trap()	asm volatile("trap")
-- 
2.13.3