From nobody Mon Feb 9 23:40:42 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1566372827; cv=none; d=zoho.com; s=zohoarc; b=O7AO6V72OnEByj4f9II0KYP/DcRLirEwDl20dRFkFNziivV7Zcvu+FukakPX8JPbWyoBkZbTrRRFT+YnV7grXOAzUpgB+cETFU17W8Eikn34ypIfptftlCk2cGr+a8t0/Ka1vnGRI3ncGFb6u1NYpmituhFFULL+Z5ffybf6JJ8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1566372827; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=6OfYTQMKoX4jr/GKkPeReqzSKyuXHnhGKnmsxWxKEh4=; b=hi2LK4W9gBXZNxEWYTx4zMoQElX5ZsXGfWSdfQv00Ht5c1tJ6UeEyBQpTHkFaqOAHe4XZBg2HMouXODQ6l6pOm2yPBYX4rEdzpwOKDX0M8p8NnJfiTPkgLFeg77TaK4fmKZEjk37clB670+ig7OjM90oVSn5lOVzPubUowtePNw= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 156637282762176.58353820885316; Wed, 21 Aug 2019 00:33:47 -0700 (PDT) Received: from localhost ([::1]:44482 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i0L7p-0003MR-US for importer@patchew.org; Wed, 21 Aug 2019 03:33:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42370) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i0L0V-0004h2-Gz for qemu-devel@nongnu.org; Wed, 21 Aug 2019 03:26:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i0L0T-000896-22 for qemu-devel@nongnu.org; Wed, 21 Aug 2019 03:26:11 -0400 Received: from ozlabs.org ([203.11.71.1]:55445) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i0L0S-00086W-CK; Wed, 21 Aug 2019 03:26:08 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 46CzjC6Wb4z9sQr; Wed, 21 Aug 2019 17:25:50 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1566372351; bh=nD2L+SiGYUChIjp0CrLusuaG7viZyrANK72wGdiR5tM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ODHF3SkAlwP8ouTlUkWwoGY0k6opY/REiHpmhLEfACYd8iXEN7I4OA1aFFZY6SyUk 09OpoC5beumS3dR+W/Pf6lfzSMyUSG8xdgvqdkLaEg6gBQMBWELEJWs/OXX+2nSKut EqvwxdyppYXfarlOHB+XG6p9Qy3IGKSdfOYz/NvY= From: David Gibson To: peter.maydell@linaro.org Date: Wed, 21 Aug 2019 17:25:26 +1000 Message-Id: <20190821072542.23090-27-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190821072542.23090-1-david@gibson.dropbear.id.au> References: <20190821072542.23090-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 203.11.71.1 Subject: [Qemu-devel] [PULL 26/42] ppc/xive: Provide unconditional escalation support 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: lvivier@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org, =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , David Gibson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: C=C3=A9dric Le Goater When the 'u' bit is set the escalation is said to be 'unconditional' which means that the ESe PQ bits are not used. Introduce a xive_router_end_es_notify() routine to share code with the ESn notification. Signed-off-by: C=C3=A9dric Le Goater Message-Id: <20190718115420.19919-7-clg@kaod.org> Signed-off-by: David Gibson --- hw/intc/xive.c | 44 ++++++++++++++++++++++++++++++-------- include/hw/ppc/xive_regs.h | 2 ++ 2 files changed, 37 insertions(+), 9 deletions(-) diff --git a/hw/intc/xive.c b/hw/intc/xive.c index 12f0d09df6..3fe84f3e76 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -1429,6 +1429,27 @@ static bool xive_presenter_notify(XiveRouter *xrtr, = uint8_t format, return found; } =20 +/* + * Notification using the END ESe/ESn bit (Event State Buffer for + * escalation and notification). Profide futher coalescing in the + * Router. + */ +static bool xive_router_end_es_notify(XiveRouter *xrtr, uint8_t end_blk, + uint32_t end_idx, XiveEND *end, + uint32_t end_esmask) +{ + uint8_t pq =3D xive_get_field32(end_esmask, end->w1); + bool notify =3D xive_esb_trigger(&pq); + + if (pq !=3D xive_get_field32(end_esmask, end->w1)) { + end->w1 =3D xive_set_field32(end_esmask, end->w1, pq); + xive_router_write_end(xrtr, end_blk, end_idx, end, 1); + } + + /* ESe/n[Q]=3D1 : end of notification */ + return notify; +} + /* * An END trigger can come from an event trigger (IPI or HW) or from * another chip. We don't model the PowerBus but the END trigger @@ -1485,16 +1506,9 @@ static void xive_router_end_notify(XiveRouter *xrtr,= uint8_t end_blk, * even futher coalescing in the Router */ if (!xive_end_is_notify(&end)) { - uint8_t pq =3D xive_get_field32(END_W1_ESn, end.w1); - bool notify =3D xive_esb_trigger(&pq); - - if (pq !=3D xive_get_field32(END_W1_ESn, end.w1)) { - end.w1 =3D xive_set_field32(END_W1_ESn, end.w1, pq); - xive_router_write_end(xrtr, end_blk, end_idx, &end, 1); - } - /* ESn[Q]=3D1 : end of notification */ - if (!notify) { + if (!xive_router_end_es_notify(xrtr, end_blk, end_idx, + &end, END_W1_ESn)) { return; } } @@ -1558,6 +1572,18 @@ static void xive_router_end_notify(XiveRouter *xrtr,= uint8_t end_blk, return; } =20 + /* + * Check the END ESe (Event State Buffer for escalation) for even + * futher coalescing in the Router + */ + if (!xive_end_is_uncond_escalation(&end)) { + /* ESe[Q]=3D1 : end of notification */ + if (!xive_router_end_es_notify(xrtr, end_blk, end_idx, + &end, END_W1_ESe)) { + return; + } + } + /* * The END trigger becomes an Escalation trigger */ diff --git a/include/hw/ppc/xive_regs.h b/include/hw/ppc/xive_regs.h index b0c68ab5f7..4378d7259c 100644 --- a/include/hw/ppc/xive_regs.h +++ b/include/hw/ppc/xive_regs.h @@ -210,6 +210,8 @@ typedef struct XiveEND { #define xive_end_is_notify(end) (be32_to_cpu((end)->w0) & END_W0_UCOND_N= OTIFY) #define xive_end_is_backlog(end) (be32_to_cpu((end)->w0) & END_W0_BACKLOG) #define xive_end_is_escalate(end) (be32_to_cpu((end)->w0) & END_W0_ESCALAT= E_CTL) +#define xive_end_is_uncond_escalation(end) \ + (be32_to_cpu((end)->w0) & END_W0_UNCOND_ESCALATE) =20 static inline uint64_t xive_end_qaddr(XiveEND *end) { --=20 2.21.0