From patchwork Mon Sep 11 17:12:22 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 812464 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=) 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 3xrZRM39Kpz9s81 for ; Tue, 12 Sep 2017 03:19:27 +1000 (AEST) Received: from localhost ([::1]:59294 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drSMn-0005HA-Dk for incoming@patchwork.ozlabs.org; Mon, 11 Sep 2017 13:19:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35112) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drSHQ-0000zG-Is for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1drSHL-00048K-Kr for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:52 -0400 Received: from 2.mo2.mail-out.ovh.net ([188.165.53.149]:38889) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1drSHL-00047l-Ez for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:13:47 -0400 Received: from player770.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo2.mail-out.ovh.net (Postfix) with ESMTP id 835E3AB087 for ; Mon, 11 Sep 2017 19:13:46 +0200 (CEST) Received: from zorba.kaod.org.com (LFbn-1-2231-173.w90-76.abo.wanadoo.fr [90.76.52.173]) (Authenticated sender: clg@kaod.org) by player770.ha.ovh.net (Postfix) with ESMTPSA id 53DFF3C006C; Mon, 11 Sep 2017 19:13:39 +0200 (CEST) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-ppc@nongnu.org, qemu-devel@nongnu.org, David Gibson , Benjamin Herrenschmidt , Alexey Kardashevskiy , Alexander Graf Date: Mon, 11 Sep 2017 19:12:22 +0200 Message-Id: <20170911171235.29331-9-clg@kaod.org> X-Mailer: git-send-email 2.13.5 In-Reply-To: <20170911171235.29331-1-clg@kaod.org> References: <20170911171235.29331-1-clg@kaod.org> MIME-Version: 1.0 X-Ovh-Tracer-Id: 14144117580534418259 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeelledrgedtgdduudehucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 188.165.53.149 Subject: [Qemu-devel] [RFC PATCH v2 08/21] ppc/xive: describe the XIVE interrupt source flags 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: =?utf-8?q?C=C3=A9dric_Le_Goater?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The XIVE interrupt sources can have different characteristics depending on their nature and the HW level in use. The PAPR specs provide a set of flags to describe them : : - XIVE_SRC_H_INT_ESB the Event State Buffers are controlled with a specific hcall H_INT_ESB and not with MMIO - XIVE_SRC_LSI LSI or MSI source (ICSIRQState level) - XIVE_SRC_TRIGGER the full function page supports trigger - XIVE_SRC_STORE_EOI EOI can be done with a store. Our QEMU emulation of XIVE for the sPAPR machine gathers all sources under a same model and provides a common source with the XIVE_SRC_TRIGGER type. So, the above list is mostly informative apart from the XIVE_SRC_LSI flag which will be deduced from the XICS_FLAGS_IRQ_LSI flag of the ICSIRQState array when needed. The OS retrieves this information on the source with the H_INT_GET_SOURCE_INFO hcall. Signed-off-by: Cédric Le Goater --- hw/intc/spapr_xive.c | 4 ++++ include/hw/ppc/spapr_xive.h | 7 +++++++ 2 files changed, 11 insertions(+) diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index 8a85d64efc4c..a1ce993d2afa 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -371,6 +371,10 @@ static void spapr_xive_realize(DeviceState *dev, Error **errp) ics_set_irq_type(xive->ics, i, false); } + /* All sources are emulated under the XIVE object and share the + * same characteristic */ + xive->flags = XIVE_SRC_TRIGGER; + /* Allocate SBEs (State Bit Entry). 2 bits, so 4 entries per byte */ xive->sbe_size = DIV_ROUND_UP(xive->nr_irqs, 4); xive->sbe = g_malloc0(xive->sbe_size); diff --git a/include/hw/ppc/spapr_xive.h b/include/hw/ppc/spapr_xive.h index 0f516534d76a..b46e59319236 100644 --- a/include/hw/ppc/spapr_xive.h +++ b/include/hw/ppc/spapr_xive.h @@ -40,6 +40,13 @@ struct sPAPRXive { ICSState *ics; /* XICS source inherited from the SPAPR machine */ qemu_irq *qirqs; + /* Interrupt source flags */ +#define XIVE_SRC_H_INT_ESB (1ull << (63 - 60)) +#define XIVE_SRC_LSI (1ull << (63 - 61)) +#define XIVE_SRC_TRIGGER (1ull << (63 - 62)) +#define XIVE_SRC_STORE_EOI (1ull << (63 - 63)) + uint32_t flags; + /* XIVE internal tables */ uint8_t *sbe; uint32_t sbe_size;