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b=SFk22OUyefzj9w+o0LeAedsPbEaHYpfyQrm9YAFrRcy09EUuEyT92syG43l2VQbyAXyNgAfjBm7zCYkDviOxPyyiZ6NQruimjyKlLfNIPNXWsjBKVg4KSgEMUFwCBG/KKMhelrtzAyAwSiP4mkTgxGpMCL3G+pUcvIrvZNgaAA9zsQ2+dYdsRbK7DCKNKiADWE02JOaSuwlucDWqaLPo3bw6jVQEQRj8mJW3QajFND0F4LSk84uCWAG6sqxmuHmUgPmKTsNTW2q1Qk6NqXSaocc8I5PRnTX4/ROjEFORRA5MF2nY5gFwQP5IdwD1cWOsX/OwB7iqWKHsZsEcmVmuaw== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; From: Nathan Chen To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: Yi Liu , Eric Auger , Zhenzhong Duan , Peter Maydell , Marcel Apfelbaum , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Yanan Wang , Zhao Liu , Alex Williamson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Shameer Kolothum , Matt Ochs , Nicolin Chen , Nathan Chen Subject: [PATCH 02/11] hw/arm/smmuv3-accel: Implement "auto" value for "ats" Date: Tue, 31 Mar 2026 18:02:22 -0700 Message-ID: <20260401010231.4166776-3-nathanc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260401010231.4166776-1-nathanc@nvidia.com> References: <20260401010231.4166776-1-nathanc@nvidia.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SJ2PR07CA0017.namprd07.prod.outlook.com (2603:10b6:a03:505::17) To DS2PR12MB9567.namprd12.prod.outlook.com (2603:10b6:8:27c::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS2PR12MB9567:EE_|CH1PR12MB9647:EE_ X-MS-Office365-Filtering-Correlation-Id: 585d2132-2368-445e-15f4-08de8f8a5e58 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: permerror client-ip=2a01:111:f403:c111::5; envelope-from=nathanc@nvidia.com; helo=DM1PR04CU001.outbound.protection.outlook.com X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FORGED_SPF_HELO=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @Nvidia.com) X-ZM-MESSAGEID: 1775005524204158500 Content-Type: text/plain; charset="utf-8" From: Nathan Chen Allow accelerated SMMUv3 Address Translation Services support property to be derived from host IOMMU capabilities. Derive host values using IOMMU_GET_HW_INFO, retrieving ATS capability from IDR0. Signed-off-by: Nathan Chen --- hw/arm/smmuv3-accel.c | 10 ++++++++++ hw/arm/smmuv3.c | 7 +------ 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/hw/arm/smmuv3-accel.c b/hw/arm/smmuv3-accel.c index a0146c8d31..a835c8f220 100644 --- a/hw/arm/smmuv3-accel.c +++ b/hw/arm/smmuv3-accel.c @@ -44,6 +44,12 @@ static void smmuv3_accel_auto_finalise(SMMUv3State *s, return; } =20 + /* Update ATS if auto from info */ + if (s->ats =3D=3D ON_OFF_AUTO_AUTO) { + s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, ATS, + FIELD_EX32(info->idr[0], IDR0, ATS)); + } + accel->auto_finalised =3D true; } =20 @@ -938,4 +944,8 @@ void smmuv3_accel_init(SMMUv3State *s) s->s_accel =3D g_new0(SMMUv3AccelState, 1); bs->iommu_ops =3D &smmuv3_accel_ops; smmuv3_accel_as_init(s); + + if (s->ats =3D=3D ON_OFF_AUTO_AUTO) { + s->s_accel->auto_mode =3D true; + } } diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index 09ea08eb18..f3603554e3 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -1973,10 +1973,6 @@ static bool smmu_validate_property(SMMUv3State *s, E= rror **errp) } #endif =20 - if (s->ats =3D=3D ON_OFF_AUTO_AUTO) { - error_setg(errp, "ats auto mode is not supported"); - return false; - } if (s->ril =3D=3D ON_OFF_AUTO_AUTO) { error_setg(errp, "ril auto mode is not supported"); return false; @@ -2196,8 +2192,7 @@ static void smmuv3_class_init(ObjectClass *klass, con= st void *data) "is not supported."); object_class_property_set_description(klass, "ats", "Enable/disable ATS support (for accel=3Don). Please ensure host " - "platform has ATS support before enabling this. ats=3Dauto is not " - "supported."); + "platform has ATS support before enabling this."); object_class_property_set_description(klass, "oas", "Specify Output Address Size (for accel=3Don). Supported values " "are 44 or 48 bits. Defaults to 44 bits. oas=3Dauto is not " --=20 2.43.0