From patchwork Mon Jun 25 11:53:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 934207 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41DnlL1tm5z9ryk for ; Mon, 25 Jun 2018 21:59:10 +1000 (AEST) Received: from localhost ([::1]:45901 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fXQ9C-00037D-R6 for incoming@patchwork.ozlabs.org; Mon, 25 Jun 2018 07:59:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39088) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fXQ4O-0007bB-2x for qemu-devel@nongnu.org; Mon, 25 Jun 2018 07:54:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fXQ4M-0001ws-L1 for qemu-devel@nongnu.org; Mon, 25 Jun 2018 07:54:08 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:51966 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fXQ4M-0001wW-G8; Mon, 25 Jun 2018 07:54:06 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DCBDFB798; Mon, 25 Jun 2018 11:54:05 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-226.ams2.redhat.com [10.36.116.226]) by smtp.corp.redhat.com (Postfix) with ESMTP id 865912166B5D; Mon, 25 Jun 2018 11:54:04 +0000 (UTC) From: David Hildenbrand To: qemu-s390x@nongnu.org Date: Mon, 25 Jun 2018 13:53:50 +0200 Message-Id: <20180625115352.6889-8-david@redhat.com> In-Reply-To: <20180625115352.6889-1-david@redhat.com> References: <20180625115352.6889-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Mon, 25 Jun 2018 11:54:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Mon, 25 Jun 2018 11:54:05 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'david@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v3 7/9] s390x/tcg: implement SET CLOCK X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , David Hildenbrand , Cornelia Huck , Alexander Graf , qemu-devel@nongnu.org, Christian Borntraeger , Richard Henderson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This allows a guest to change its TOD. We already take care of updating all CKC timers from within S390TODClass. Use MO_ALIGN to load the operand manually - this will properly trigger a SPECIFICATION exception. Signed-off-by: David Hildenbrand Acked-by: Thomas Huth --- target/s390x/helper.h | 1 + target/s390x/insn-data.def | 3 +-- target/s390x/misc_helper.c | 16 ++++++++++++++++ target/s390x/translate.c | 9 +++++++++ 4 files changed, 27 insertions(+), 2 deletions(-) diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 59cba86a27..97c60ca7bc 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -127,6 +127,7 @@ DEF_HELPER_4(diag, void, env, i32, i32, i32) DEF_HELPER_3(load_psw, noreturn, env, i64, i64) DEF_HELPER_FLAGS_2(spx, TCG_CALL_NO_RWG, void, env, i64) DEF_HELPER_FLAGS_1(stck, TCG_CALL_NO_RWG_SE, i64, env) +DEF_HELPER_FLAGS_2(sck, TCG_CALL_NO_RWG, i32, env, i64) DEF_HELPER_FLAGS_2(sckc, TCG_CALL_NO_RWG, void, env, i64) DEF_HELPER_FLAGS_2(sckpf, TCG_CALL_NO_RWG, void, env, i64) DEF_HELPER_FLAGS_1(stckc, TCG_CALL_NO_RWG, i64, env) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index 157619403d..5c6f33ed9c 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -997,8 +997,7 @@ /* SET ADDRESS SPACE CONTROL FAST */ C(0xb279, SACF, S, Z, 0, a2, 0, 0, sacf, 0) /* SET CLOCK */ - /* ??? Not implemented - is it necessary? */ - C(0xb204, SCK, S, Z, 0, 0, 0, 0, 0, 0) + C(0xb204, SCK, S, Z, la2, 0, 0, 0, sck, 0) /* SET CLOCK COMPARATOR */ C(0xb206, SCKC, S, Z, 0, m2_64a, 0, 0, sckc, 0) /* SET CLOCK PROGRAMMABLE FIELD */ diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c index 4872bdd774..a223970d1c 100644 --- a/target/s390x/misc_helper.c +++ b/target/s390x/misc_helper.c @@ -189,6 +189,22 @@ void tcg_s390_tod_updated(CPUState *cs, run_on_cpu_data opaque) helper_sckc(env, env->ckc); } +/* Set Clock */ +uint32_t HELPER(sck)(CPUS390XState *env, uint64_t tod_low) +{ + S390TODState *td = s390_get_todstate(); + S390TODClass *tdc = S390_TOD_GET_CLASS(td); + S390TOD tod = { + .high = 0, + .low = tod_low, + }; + + qemu_mutex_lock_iothread(); + tdc->set(td, &tod, &error_abort); + qemu_mutex_unlock_iothread(); + return 0; +} + /* Set Tod Programmable Field */ void HELPER(sckpf)(CPUS390XState *env, uint64_t r0) { diff --git a/target/s390x/translate.c b/target/s390x/translate.c index fdfec7feba..57c03cbf58 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -4016,6 +4016,15 @@ static DisasJumpType op_stcke(DisasContext *s, DisasOps *o) return DISAS_NEXT; } +static DisasJumpType op_sck(DisasContext *s, DisasOps *o) +{ + check_privileged(s); + tcg_gen_qemu_ld_i64(o->in1, o->addr1, get_mem_index(s), MO_TEQ | MO_ALIGN); + gen_helper_sck(cc_op, cpu_env, o->in1); + set_cc_static(s); + return DISAS_NEXT; +} + static DisasJumpType op_sckc(DisasContext *s, DisasOps *o) { check_privileged(s);