From patchwork Fri May 8 17:30:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 1286347 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=AzvCWo0z; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 49JcpN1HlXz9sSG for ; Sat, 9 May 2020 03:32:12 +1000 (AEST) Received: from localhost ([::1]:44036 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jX6r3-0008Fn-Sj for incoming@patchwork.ozlabs.org; Fri, 08 May 2020 13:32:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47938) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jX6qG-0007vn-0t for qemu-devel@nongnu.org; Fri, 08 May 2020 13:31:20 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:31342 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jX6qE-00076r-L1 for qemu-devel@nongnu.org; Fri, 08 May 2020 13:31:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588959077; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=f1iGnaXpdo63k+S+t3uaODTsxzZU8AGGcr/yxIVoGWI=; b=AzvCWo0zjrT8cJzvsSdTkittQF0pSdi+5wVnbNeJu8+QQ+RTq1fHmUXoiK3j8rWJ5t/6wI xxvMgt9WMBPbzIQclbbhJMEdZ/y5C1CtPv5b+JqhsR3ZMHY2Abl4rk17Or2RtoBOKXfmHY 35Ti5p3h4k8IfxwM7I/4Jpom2YA1GEM= 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-234-F1GVroQFPq20sbCq07mHXA-1; Fri, 08 May 2020 13:31:15 -0400 X-MC-Unique: F1GVroQFPq20sbCq07mHXA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AC2B8107ACCD; Fri, 8 May 2020 17:31:14 +0000 (UTC) Received: from laptop.redhat.com (ovpn-114-214.ams2.redhat.com [10.36.114.214]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3603A6198A; Fri, 8 May 2020 17:31:12 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, mst@redhat.com, jean-philippe@linaro.org, bbhushan2@marvell.com, peterx@redhat.com, armbru@redhat.com, pbonzini@redhat.com Subject: [PATCH v2 1/5] qdev: Introduce DEFINE_PROP_RESERVED_REGION Date: Fri, 8 May 2020 19:30:53 +0200 Message-Id: <20200508173057.32215-2-eric.auger@redhat.com> In-Reply-To: <20200508173057.32215-1-eric.auger@redhat.com> References: <20200508173057.32215-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=eric.auger@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/08 02:25:09 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Introduce a new property defining a reserved region: , , . This will be used to encode reserved IOVA regions. For instance, in virtio-iommu use case, reserved IOVA regions will be passed by the machine code to the virtio-iommu-pci device (an array of those). The type of the reserved region will match the virtio_iommu_probe_resv_mem subtype value: - VIRTIO_IOMMU_RESV_MEM_T_RESERVED (0) - VIRTIO_IOMMU_RESV_MEM_T_MSI (1) on PC/Q35 machine, this will be used to inform the virtio-iommu-pci device it should bypass the MSI region. The reserved region will be: 0xfee00000, 0xfeefffff, 1. On ARM, we can declare the ITS MSI doorbell as an MSI region to prevent MSIs from being mapped on guest side. Signed-off-by: Eric Auger --- v11 -> v12: - rename into DEFINE_PROP_RESERVED_REGION - do not use g_strsplit anymore, use endptr instead - remove 0x references --- include/exec/memory.h | 6 +++ include/hw/qdev-properties.h | 3 ++ include/qemu/typedefs.h | 1 + hw/core/qdev-properties.c | 89 ++++++++++++++++++++++++++++++++++++ 4 files changed, 99 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index e000bd2f97..7e47afabe8 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -57,6 +57,12 @@ struct MemoryRegionMmio { CPUWriteMemoryFunc *write[3]; }; +struct ReservedRegion { + hwaddr low; + hwaddr high; + unsigned int type; +}; + typedef struct IOMMUTLBEntry IOMMUTLBEntry; /* See address_space_translate: bit 0 is read, bit 1 is write. */ diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index f161604fb6..03bf850a7e 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -19,6 +19,7 @@ extern const PropertyInfo qdev_prop_string; extern const PropertyInfo qdev_prop_chr; extern const PropertyInfo qdev_prop_tpm; extern const PropertyInfo qdev_prop_macaddr; +extern const PropertyInfo qdev_prop_reserved_region; extern const PropertyInfo qdev_prop_on_off_auto; extern const PropertyInfo qdev_prop_multifd_compression; extern const PropertyInfo qdev_prop_losttickpolicy; @@ -183,6 +184,8 @@ extern const PropertyInfo qdev_prop_pcie_link_width; DEFINE_PROP(_n, _s, _f, qdev_prop_drive_iothread, BlockBackend *) #define DEFINE_PROP_MACADDR(_n, _s, _f) \ DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr) +#define DEFINE_PROP_RESERVED_REGION(_n, _s, _f) \ + DEFINE_PROP(_n, _s, _f, qdev_prop_reserved_region, ReservedRegion) #define DEFINE_PROP_ON_OFF_AUTO(_n, _s, _f, _d) \ DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_on_off_auto, OnOffAuto) #define DEFINE_PROP_MULTIFD_COMPRESSION(_n, _s, _f, _d) \ diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h index ecf3cde26c..85c4f891f4 100644 --- a/include/qemu/typedefs.h +++ b/include/qemu/typedefs.h @@ -59,6 +59,7 @@ typedef struct ISABus ISABus; typedef struct ISADevice ISADevice; typedef struct IsaDma IsaDma; typedef struct MACAddr MACAddr; +typedef struct ReservedRegion ReservedRegion; typedef struct MachineClass MachineClass; typedef struct MachineState MachineState; typedef struct MemoryListener MemoryListener; diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c index 2047114fca..c2e0cc7cda 100644 --- a/hw/core/qdev-properties.c +++ b/hw/core/qdev-properties.c @@ -14,6 +14,7 @@ #include "qapi/visitor.h" #include "chardev/char.h" #include "qemu/uuid.h" +#include "qemu/cutils.h" void qdev_prop_set_after_realize(DeviceState *dev, const char *name, Error **errp) @@ -577,6 +578,94 @@ const PropertyInfo qdev_prop_macaddr = { .set = set_mac, }; +/* --- Reserved Region --- */ + +/* + * accepted syntax version: + * ,, + * where low/high addresses are uint64_t in hexadecimal + * and type is an unsigned integer in decimal + */ +static void get_reserved_region(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + ReservedRegion *rr = qdev_get_prop_ptr(dev, prop); + char buffer[64]; + char *p = buffer; + + snprintf(buffer, sizeof(buffer), "0x%"PRIx64",0x%"PRIx64",%u", + rr->low, rr->high, rr->type); + + visit_type_str(v, name, &p, errp); +} + +static void set_reserved_region(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + ReservedRegion *rr = qdev_get_prop_ptr(dev, prop); + Error *local_err = NULL; + const char *endptr; + char *str; + int ret; + + if (dev->realized) { + qdev_prop_set_after_realize(dev, name, errp); + return; + } + + visit_type_str(v, name, &str, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + ret = qemu_strtou64(str, &endptr, 16, &rr->low); + if (ret) { + error_setg(errp, "Failed to decode reserved region low addr"); + error_append_hint(errp, + "should be an address in hexadecimal\n"); + goto out; + } + if (*endptr != ',') { + goto separator_error; + } + + ret = qemu_strtou64(endptr + 1, &endptr, 16, &rr->high); + if (ret) { + error_setg(errp, "Failed to decode reserved region high addr"); + error_append_hint(errp, + "should be an address in hexadecimal\n"); + goto out; + } + if (*endptr != ',') { + goto separator_error; + } + + ret = qemu_strtoui(endptr + 1, &endptr, 10, &rr->type); + if (ret) { + error_setg(errp, "Failed to decode reserved region type"); + error_append_hint(errp, "should be an unsigned integer in decimal\n"); + } + goto out; + +separator_error: + error_setg(errp, "reserved region fields must be separated with commas"); +out: + g_free(str); + return; +} + +const PropertyInfo qdev_prop_reserved_region = { + .name = "reserved_region", + .description = "Reserved Region, example: 0xFEE00000,0xFEEFFFFF,0", + .get = get_reserved_region, + .set = set_reserved_region, +}; + /* --- on/off/auto --- */ const PropertyInfo qdev_prop_on_off_auto = {