From nobody Mon Feb 9 20:32:26 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; 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=1563451007; cv=none; d=zoho.com; s=zohoarc; b=F6mVbhRQ94VVXi0ZzDeYp09EhgtCYcruiUMYuh9RzYwQIRbcZtFCJeBXRsCG3yQ75Qfq6DsoBXnh6ZuEwUMXeG6jX9MofUY3umZahH3bDboYur7NXGO4MUh8Xr4ExBpPu6P05IUpdh4LoRxAua8VvO+RRisn1Ne3ljvtNPJZTXw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1563451007; 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=tfhGE9n0nbyhDyypRTjL3gCQdmc70anBOP0xLSiNA9Q=; b=N7Kg0yl4PLiG510/TkCGdLpx6fwjnpGHKZHzLhjW7Mav8AoZhNRS3Bdo/JALPKtBHoLH5FKedc9EA/24kc6eg4DFsAVPcOZQJxLE11pqm0GrCGlRQk0y/thVtcOj8KtQQe3XEJl4w9jdniYcLiXTBlW++AOQs0RrFO2xE8tFgmU= ARC-Authentication-Results: i=1; mx.zoho.com; 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 1563451007101580.6838943636816; Thu, 18 Jul 2019 04:56:47 -0700 (PDT) Received: from localhost ([::1]:36832 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ho51i-0002FJ-6n for importer@patchew.org; Thu, 18 Jul 2019 07:56:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58923) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ho50A-0005P9-IJ for qemu-devel@nongnu.org; Thu, 18 Jul 2019 07:55:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ho509-0001tF-B6 for qemu-devel@nongnu.org; Thu, 18 Jul 2019 07:55:10 -0400 Received: from 8.mo177.mail-out.ovh.net ([46.105.61.98]:48415) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ho509-0001pW-4G for qemu-devel@nongnu.org; Thu, 18 Jul 2019 07:55:09 -0400 Received: from player778.ha.ovh.net (unknown [10.109.160.230]) by mo177.mail-out.ovh.net (Postfix) with ESMTP id 8BF73FC9F0 for ; Thu, 18 Jul 2019 13:55:07 +0200 (CEST) Received: from kaod.org (lfbn-1-2240-157.w90-76.abo.wanadoo.fr [90.76.60.157]) (Authenticated sender: clg@kaod.org) by player778.ha.ovh.net (Postfix) with ESMTPSA id E297F801F36C; Thu, 18 Jul 2019 11:55:01 +0000 (UTC) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: David Gibson Date: Thu, 18 Jul 2019 13:54:09 +0200 Message-Id: <20190718115420.19919-7-clg@kaod.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190718115420.19919-1-clg@kaod.org> References: <20190718115420.19919-1-clg@kaod.org> MIME-Version: 1.0 X-Ovh-Tracer-Id: 6781013666426162150 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduvddrieehgdegjecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfqggfjpdevjffgvefmvefgnecuuegrihhlohhuthemucehtddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 46.105.61.98 Subject: [Qemu-devel] [PATCH v2 06/17] 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: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , qemu-ppc@nongnu.org, Greg Kurz , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" 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 --- include/hw/ppc/xive_regs.h | 2 ++ hw/intc/xive.c | 44 ++++++++++++++++++++++++++++++-------- 2 files changed, 37 insertions(+), 9 deletions(-) diff --git a/include/hw/ppc/xive_regs.h b/include/hw/ppc/xive_regs.h index 1a8c5b5e64f0..5d02ccfeff16 100644 --- a/include/hw/ppc/xive_regs.h +++ b/include/hw/ppc/xive_regs.h @@ -207,6 +207,8 @@ 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) { diff --git a/hw/intc/xive.c b/hw/intc/xive.c index 89a09dde060b..c2e7e2d4c9a9 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -1407,6 +1407,27 @@ 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 @@ -1463,16 +1484,9 @@ 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; } } @@ -1536,6 +1550,18 @@ 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 */ --=20 2.21.0