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Wed, 15 May 2024 07:14:17 +0000 Received: from AM8PR07MB7602.eurprd07.prod.outlook.com ([fe80::fbd7:ca71:b636:6f9d]) by AM8PR07MB7602.eurprd07.prod.outlook.com ([fe80::fbd7:ca71:b636:6f9d%5]) with mapi id 15.20.7544.056; Wed, 15 May 2024 07:14:17 +0000 From: CLEMENT MATHIEU--DRIF To: "qemu-devel@nongnu.org" CC: "jasowang@redhat.com" , "zhenzhong.duan@intel.com" , "kevin.tian@intel.com" , "yi.l.liu@intel.com" , "joao.m.martins@oracle.com" , "peterx@redhat.com" , CLEMENT MATHIEU--DRIF Subject: [PATCH ats_vtd v2 12/25] intel_iommu: add an internal API to find an address space with PASID Thread-Topic: [PATCH ats_vtd v2 12/25] intel_iommu: add an internal API to find an address space with PASID Thread-Index: AQHappd/JvyZoFH1rEa1gdjZ3Mno9Q== Date: Wed, 15 May 2024 07:14:16 +0000 Message-ID: <20240515071057.33990-13-clement.mathieu--drif@eviden.com> References: <20240515071057.33990-1-clement.mathieu--drif@eviden.com> In-Reply-To: <20240515071057.33990-1-clement.mathieu--drif@eviden.com> Accept-Language: en-GB, fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=eviden.com; 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envelope-from=clement.mathieu--drif@eviden.com; helo=smarthost4.eviden.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 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-bounces+incoming=patchwork.ozlabs.org@nongnu.org This will be used to implement the device IOTLB invalidation Signed-off-by: Clément Mathieu--Drif --- hw/i386/intel_iommu.c | 39 ++++++++++++++++++++++++--------------- 1 file changed, 24 insertions(+), 15 deletions(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 3bb4d385a8..166103510e 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -65,6 +65,11 @@ struct vtd_as_key { uint32_t pasid; }; +struct vtd_as_raw_key { + uint16_t sid; + uint32_t pasid; +}; + struct vtd_iotlb_key { uint64_t gfn; uint32_t pasid; @@ -1931,29 +1936,33 @@ static inline bool vtd_is_interrupt_addr(hwaddr addr) return VTD_INTERRUPT_ADDR_FIRST <= addr && addr <= VTD_INTERRUPT_ADDR_LAST; } -static gboolean vtd_find_as_by_sid(gpointer key, gpointer value, - gpointer user_data) +static gboolean vtd_find_as_by_sid_and_pasid(gpointer key, gpointer value, + gpointer user_data) { struct vtd_as_key *as_key = (struct vtd_as_key *)key; - uint16_t target_sid = *(uint16_t *)user_data; + struct vtd_as_raw_key target = *(struct vtd_as_raw_key *)user_data; uint16_t sid = PCI_BUILD_BDF(pci_bus_num(as_key->bus), as_key->devfn); - return sid == target_sid; + + return (as_key->pasid == target.pasid) && + (sid == target.sid); } -static VTDAddressSpace *vtd_get_as_by_sid(IntelIOMMUState *s, uint16_t sid) +static VTDAddressSpace *vtd_get_as_by_sid_and_pasid(IntelIOMMUState *s, + uint16_t sid, + uint32_t pasid) { - uint8_t bus_num = PCI_BUS_NUM(sid); - VTDAddressSpace *vtd_as = s->vtd_as_cache[bus_num]; - - if (vtd_as && - (sid == PCI_BUILD_BDF(pci_bus_num(vtd_as->bus), vtd_as->devfn))) { - return vtd_as; - } + struct vtd_as_raw_key key = { + .sid = sid, + .pasid = pasid + }; - vtd_as = g_hash_table_find(s->vtd_address_spaces, vtd_find_as_by_sid, &sid); - s->vtd_as_cache[bus_num] = vtd_as; + return g_hash_table_find(s->vtd_address_spaces, + vtd_find_as_by_sid_and_pasid, &key); +} - return vtd_as; +static VTDAddressSpace *vtd_get_as_by_sid(IntelIOMMUState *s, uint16_t sid) +{ + return vtd_get_as_by_sid_and_pasid(s, sid, PCI_NO_PASID); } static void vtd_pt_enable_fast_path(IntelIOMMUState *s, uint16_t source_id)