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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS 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 727DCC43603 for ; Mon, 16 Dec 2019 14:11:11 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 3C105206A5 for ; Mon, 16 Dec 2019 14:11:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="NngFZxQT" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C105206A5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:54372 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1igr5Z-0005gV-Q2 for qemu-devel@archiver.kernel.org; Mon, 16 Dec 2019 09:11:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:58711) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1igqyy-0004Ty-0g for qemu-devel@nongnu.org; Mon, 16 Dec 2019 09:04:21 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1igqyr-0003xl-Hc for qemu-devel@nongnu.org; Mon, 16 Dec 2019 09:04:19 -0500 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:27895 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1igqyr-0003xb-Dz for qemu-devel@nongnu.org; Mon, 16 Dec 2019 09:04:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576505052; 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=go7p3wwISfVA0pTnz3FCaoN35+Sj/LsY9kHumr5FQBc=; b=NngFZxQTzCi0dy/V0rHpIqF4ivGvco6IoqTDiD4sdmSYHDAvyxXBcCi0tmQ7LCpESO283N ynhLF+KCwDZ9WhXsSfMzY+B28IH4PDMUvHVoINsL66qVLKYzdUZgkVnrh1nHkKyPDW/Y8M CL2AWeEQ92zp3vv95hvMBH0t+0Z2LbI= 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-218-rtoyeNZEPGCPQmzAG2EvCg-1; Mon, 16 Dec 2019 09:04:08 -0500 X-MC-Unique: rtoyeNZEPGCPQmzAG2EvCg-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 199D38024E6; Mon, 16 Dec 2019 14:04:07 +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 F0B68675B8; Mon, 16 Dec 2019 14:04:03 +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 Subject: [kvm-unit-tests PATCH 08/16] arm/arm64: ITS: Init the command queue Date: Mon, 16 Dec 2019 15:02:27 +0100 Message-Id: <20191216140235.10751-9-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 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.61 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, drjones@redhat.com, andre.przywara@arm.com, thuth@redhat.com, yuzenghui@huawei.com, alexandru.elisei@arm.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Allocate the command queue and initialize related registers: CBASER, CREADR, CWRITER. The command queue is 64kB. This aims at not bothing with fullness. Signed-off-by: Eric Auger --- lib/arm/asm/gic-v3-its.h | 7 +++++++ lib/arm/gic-v3-its.c | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h index 0d11aed..ed42707 100644 --- a/lib/arm/asm/gic-v3-its.h +++ b/lib/arm/asm/gic-v3-its.h @@ -113,10 +113,17 @@ struct its_baser { int esz; }; =20 +struct its_cmd_block { + u64 raw_cmd[4]; +}; + struct its_data { void *base; struct its_typer typer; struct its_baser baser[GITS_BASER_NR_REGS]; + struct its_cmd_block *cmd_base; + struct its_cmd_block *cmd_write; + struct its_cmd_block *cmd_readr; }; =20 extern struct its_data its_data; diff --git a/lib/arm/gic-v3-its.c b/lib/arm/gic-v3-its.c index 0b5a700..8b6a095 100644 --- a/lib/arm/gic-v3-its.c +++ b/lib/arm/gic-v3-its.c @@ -188,3 +188,40 @@ void set_pending_table_bit(int rdist, int n, bool se= t) byte &=3D ~mask; *ptr =3D byte; } + +/** + * init_cmd_queue: Allocate the command queue and initialize + * CBASER, CREADR, CWRITER + */ +void init_cmd_queue(void); +void init_cmd_queue(void) +{ + unsigned long n =3D SZ_64K >> PAGE_SHIFT; + unsigned long order =3D fls(n); + u64 cbaser, tmp; + + its_data.cmd_base =3D (void *)virt_to_phys(alloc_pages(order)); + + cbaser =3D ((u64)its_data.cmd_base | + GITS_CBASER_WaWb | + GITS_CBASER_InnerShareable | + (SZ_64K / SZ_4K - 1) | + GITS_CBASER_VALID); + + writeq(cbaser, its_data.base + GITS_CBASER); + tmp =3D readq(its_data.base + GITS_CBASER); + + if ((tmp ^ cbaser) & GITS_CBASER_SHAREABILITY_MASK) { + if (!(tmp & GITS_CBASER_SHAREABILITY_MASK)) { + cbaser &=3D ~(GITS_CBASER_SHAREABILITY_MASK | + GITS_CBASER_CACHEABILITY_MASK); + cbaser |=3D GITS_CBASER_nC; + writeq(cbaser, its_data.base + GITS_CBASER); + } + } + + its_data.cmd_write =3D its_data.cmd_base; + its_data.cmd_readr =3D its_data.cmd_base; + writeq(0, its_data.base + GITS_CWRITER); + writeq(0, its_data.base + GITS_CREADR); +} --=20 2.20.1