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a="37972639" X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="37972639" X-CSE-ConnectionGUID: enyxv5BTTfKgcWqnTw1+JQ== X-CSE-MsgGUID: SgSG/ksCQfiEncqm6sRMUw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="33597870" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Marcel Apfelbaum , Paolo Bonzini , Richard Henderson , Eduardo Habkost Subject: [PATCH rfcv2 12/17] intel_iommu: add an internal API to find an address space with PASID Date: Wed, 22 May 2024 14:23:08 +0800 Message-Id: <20240522062313.453317-13-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240522062313.453317-1-zhenzhong.duan@intel.com> References: <20240522062313.453317-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=192.198.163.7; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_MED=-2.3, SPF_HELO_NONE=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1716359467383100027 From: Cl=C3=A9ment Mathieu--Drif This will be used to implement the device IOTLB invalidation Signed-off-by: Cl=C3=A9ment Mathieu--Drif Signed-off-by: Zhenzhong Duan --- 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 3c14fd85cc..7ae8df2f49 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -64,6 +64,11 @@ struct vtd_as_key { uint32_t pasid; }; =20 +struct vtd_as_raw_key { + uint16_t sid; + uint32_t pasid; +}; + struct vtd_iotlb_key { uint64_t gfn; uint32_t pasid; @@ -1856,29 +1861,33 @@ static inline bool vtd_is_interrupt_addr(hwaddr add= r) return VTD_INTERRUPT_ADDR_FIRST <=3D addr && addr <=3D VTD_INTERRUPT_A= DDR_LAST; } =20 -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 =3D (struct vtd_as_key *)key; - uint16_t target_sid =3D *(uint16_t *)user_data; + struct vtd_as_raw_key target =3D *(struct vtd_as_raw_key *)user_data; uint16_t sid =3D PCI_BUILD_BDF(pci_bus_num(as_key->bus), as_key->devfn= ); - return sid =3D=3D target_sid; + + return (as_key->pasid =3D=3D target.pasid) && + (sid =3D=3D target.sid); } =20 -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 =3D PCI_BUS_NUM(sid); - VTDAddressSpace *vtd_as =3D s->vtd_as_cache[bus_num]; - - if (vtd_as && - (sid =3D=3D PCI_BUILD_BDF(pci_bus_num(vtd_as->bus), vtd_as->devfn)= )) { - return vtd_as; - } + struct vtd_as_raw_key key =3D { + .sid =3D sid, + .pasid =3D pasid + }; =20 - vtd_as =3D g_hash_table_find(s->vtd_address_spaces, vtd_find_as_by_sid= , &sid); - s->vtd_as_cache[bus_num] =3D vtd_as; + return g_hash_table_find(s->vtd_address_spaces, + vtd_find_as_by_sid_and_pasid, &key); +} =20 - 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); } =20 static void vtd_pt_enable_fast_path(IntelIOMMUState *s, uint16_t source_id) --=20 2.34.1