From patchwork Mon Dec 16 14:02:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 11294261 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 163AF930 for ; Mon, 16 Dec 2019 14:04:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E775A20684 for ; Mon, 16 Dec 2019 14:04:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="eHhVD94O" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728116AbfLPOEP (ORCPT ); Mon, 16 Dec 2019 09:04:15 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:44195 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727965AbfLPOEO (ORCPT ); Mon, 16 Dec 2019 09:04:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576505053; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OCRQ/pdsIh4TpbiB2k9WKBIlHq8frf2VL5aV01rBiHQ=; b=eHhVD94OqnPQ/aKluQHF3Q743GPiau8yLs+1UY6ZGrXBoX0zFkHsn9bbjeV+ESfCBoSxnk CfzFafFqLJ19sjc7wXJ7yEiot7cOOEcaWe+2P8uvSAp6uJvZ4x3u5g49OLuj8DJ+Hg2z82 nIT+D1/a+yOmeqPEhmY95sHNvvAm2vE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-266-d9quq6-aOwC9kim1AWnO3A-1; Mon, 16 Dec 2019 09:04:12 -0500 X-MC-Unique: d9quq6-aOwC9kim1AWnO3A-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 85EBD1809A43; Mon, 16 Dec 2019 14:04:10 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-117.ams2.redhat.com [10.36.116.117]) by smtp.corp.redhat.com (Postfix) with ESMTP id 72116675B8; Mon, 16 Dec 2019 14:04:07 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org Cc: drjones@redhat.com, andre.przywara@arm.com, peter.maydell@linaro.org, yuzenghui@huawei.com, alexandru.elisei@arm.com, thuth@redhat.com Subject: [kvm-unit-tests PATCH 09/16] arm/arm64: ITS: Enable/Disable LPIs at re-distributor level Date: Mon, 16 Dec 2019 15:02:28 +0100 Message-Id: <20191216140235.10751-10-eric.auger@redhat.com> In-Reply-To: <20191216140235.10751-1-eric.auger@redhat.com> References: <20191216140235.10751-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This helper function enables or disables the signaling of LPIs at redistributor level. Signed-off-by: Eric Auger --- lib/arm/asm/gic-v3-its.h | 1 + lib/arm/gic-v3-its.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h index ed42707..d56a17f 100644 --- a/lib/arm/asm/gic-v3-its.h +++ b/lib/arm/asm/gic-v3-its.h @@ -138,6 +138,7 @@ extern struct its_baser *its_lookup_baser(int type); extern void set_lpi_config(int n, u8 val); extern u8 get_lpi_config(int n); extern void set_pending_table_bit(int rdist, int n, bool set); +extern void gicv3_rdist_ctrl_lpi(u32 redist, bool set); #endif /* !__ASSEMBLY__ */ #endif /* _ASMARM_GIC_V3_ITS_H_ */ diff --git a/lib/arm/gic-v3-its.c b/lib/arm/gic-v3-its.c index 8b6a095..b0f7714 100644 --- a/lib/arm/gic-v3-its.c +++ b/lib/arm/gic-v3-its.c @@ -225,3 +225,21 @@ void init_cmd_queue(void) writeq(0, its_data.base + GITS_CWRITER); writeq(0, its_data.base + GITS_CREADR); } + +void gicv3_rdist_ctrl_lpi(u32 redist, bool set) +{ + void *ptr; + u64 val; + + if (redist >= nr_cpus) + report_abort("%s redist=%d >= cpu_count=%d\n", + __func__, redist, nr_cpus); + + ptr = gicv3_data.redist_base[redist]; + val = readl(ptr + GICR_CTLR); + if (set) + val |= GICR_CTLR_ENABLE_LPIS; + else + val &= ~GICR_CTLR_ENABLE_LPIS; + writel(val, ptr + GICR_CTLR); +}