From patchwork Mon Sep 16 17:10:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13805681 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA6C6158870 for ; Mon, 16 Sep 2024 17:13:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726506802; cv=none; b=b94ut2Sc3opy9v/MgoyVQAeX8rFTwa+byAZFxHO2bse+99ja2bs/nG+MJICUwpD3QReoS4FQF6xRiK7FqvoqeWVWm6BAb/algr5Gi4kl0Idcn911qFBN9/GAcLo/aRWjnBKi27nZ7QCpETS/HRiYvWqcXN05prTfgjyyFU8aq5c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726506802; c=relaxed/simple; bh=f6gj0B4NS1vg3nBHIYwN3jfybjlCPYDFcnnT2r82GXA=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=rYzl3k/XVMc/JMCcfhIbg73l/0dtSTYa5o/NQYJMU8NWKh9HJVB0r4MR+YEHGHrCsBTB7GTvRZP8qPurkBcmpUpcb+PtIReM7e8kdOw2X4LJJoNOoSx9G1SSlf2aD8lFk3vHHJhBqxPhW+M1rYFsk0aanLML3gddfFesrmk9L5c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4X6rxT3DGpz6LD7S; Tue, 17 Sep 2024 01:09:33 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id 6C735140AB8; Tue, 17 Sep 2024 01:13:18 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.19.247) by frapeml500008.china.huawei.com (7.182.85.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Mon, 16 Sep 2024 19:13:14 +0200 From: Jonathan Cameron To: , , Markus Armbruster , , CC: , , , , Richard Henderson , Dave Jiang , Huang Ying , Paolo Bonzini , , Michael Roth , Ani Sinha Subject: [PATCH v6 05/15] hw/pci: Add a busnr property to pci_props and use for acpi/gi Date: Mon, 16 Sep 2024 18:10:10 +0100 Message-ID: <20240916171017.1841767-6-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240916171017.1841767-1-Jonathan.Cameron@huawei.com> References: <20240916171017.1841767-1-Jonathan.Cameron@huawei.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: lhrpeml100003.china.huawei.com (7.191.160.210) To frapeml500008.china.huawei.com (7.182.85.71) Using a property allows us to hide the internal details of the PCI device from the code to build a SRAT Generic Initiator Affinity Structure with PCI Device Handle. Suggested-by: Igor Mammedov Reviewed-by: Igor Mammedov Signed-off-by: Jonathan Cameron --- hw/acpi/acpi_generic_initiator.c | 14 +++++++++----- hw/pci/pci.c | 14 ++++++++++++++ 2 files changed, 23 insertions(+), 5 deletions(-) diff --git a/hw/acpi/acpi_generic_initiator.c b/hw/acpi/acpi_generic_initiator.c index 73bafaaaea..365feb527f 100644 --- a/hw/acpi/acpi_generic_initiator.c +++ b/hw/acpi/acpi_generic_initiator.c @@ -9,6 +9,7 @@ #include "hw/boards.h" #include "hw/pci/pci_device.h" #include "qemu/error-report.h" +#include "qapi/error.h" typedef struct AcpiGenericInitiatorClass { ObjectClass parent_class; @@ -79,7 +80,8 @@ static int build_acpi_generic_initiator(Object *obj, void *opaque) MachineState *ms = MACHINE(qdev_get_machine()); AcpiGenericInitiator *gi; GArray *table_data = opaque; - PCIDevice *pci_dev; + int32_t devfn; + uint8_t bus; Object *o; if (!object_dynamic_cast(obj, TYPE_ACPI_GENERIC_INITIATOR)) { @@ -100,10 +102,12 @@ static int build_acpi_generic_initiator(Object *obj, void *opaque) exit(1); } - pci_dev = PCI_DEVICE(o); - build_srat_pci_generic_initiator(table_data, gi->node, 0, - pci_bus_num(pci_get_bus(pci_dev)), - pci_dev->devfn); + bus = object_property_get_uint(o, "busnr", &error_fatal); + devfn = object_property_get_int(o, "addr", &error_fatal); + /* devfn is constrained in PCI to be 8 bit but storage is an int32_t */ + assert(devfn >= 0 && devfn < PCI_DEVFN_MAX); + + build_srat_pci_generic_initiator(table_data, gi->node, 0, bus, devfn); return 0; } diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 87da35ca9b..0b6bdaa0d7 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -67,6 +67,19 @@ static char *pcibus_get_fw_dev_path(DeviceState *dev); static void pcibus_reset_hold(Object *obj, ResetType type); static bool pcie_has_upstream_port(PCIDevice *dev); +static void prop_pci_busnr_get(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + uint8_t busnr = pci_dev_bus_num(PCI_DEVICE(obj)); + + visit_type_uint8(v, name, &busnr, errp); +} + +static const PropertyInfo prop_pci_busnr = { + .name = "busnr", + .get = prop_pci_busnr_get, +}; + static Property pci_props[] = { DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1), DEFINE_PROP_STRING("romfile", PCIDevice, romfile), @@ -87,6 +100,7 @@ static Property pci_props[] = { QEMU_PCIE_ARI_NEXTFN_1_BITNR, false), DEFINE_PROP_SIZE32("x-max-bounce-buffer-size", PCIDevice, max_bounce_buffer_size, DEFAULT_MAX_BOUNCE_BUFFER_SIZE), + { .name = "busnr", .info = &prop_pci_busnr }, DEFINE_PROP_END_OF_LIST() };