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a="37972681" X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="37972681" X-CSE-ConnectionGUID: FW+kQK8oRXS65aQ+JEZdrw== X-CSE-MsgGUID: 9dmoY6reSv+NIJ7QQC22fw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="33597910" 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 13/17] intel_iommu: add support for PASID-based device IOTLB invalidation Date: Wed, 22 May 2024 14:23:09 +0800 Message-Id: <20240522062313.453317-14-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: -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, 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: 1716359457249100011 From: Cl=C3=A9ment Mathieu--Drif Signed-off-by: Cl=C3=A9ment Mathieu--Drif Signed-off-by: Zhenzhong Duan --- hw/i386/intel_iommu_internal.h | 11 ++++++++ hw/i386/intel_iommu.c | 50 ++++++++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+) diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index 8a375d038a..5831aa4d82 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -378,6 +378,7 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_WAIT 0x5 /* Invalidation Wait Descripto= r */ #define VTD_INV_DESC_PIOTLB 0x6 /* PASID-IOTLB Invalidate Desc= */ #define VTD_INV_DESC_PC 0x7 /* PASID-cache Invalidate Desc= */ +#define VTD_INV_DESC_DEV_PIOTLB 0x8 /* PASID-based-DIOTLB inv_desc= */ #define VTD_INV_DESC_NONE 0 /* Not an Invalidate Descripto= r */ =20 /* Masks for Invalidation Wait Descriptor*/ @@ -421,6 +422,16 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_DEVICE_IOTLB_RSVD_HI 0xffeULL #define VTD_INV_DESC_DEVICE_IOTLB_RSVD_LO 0xffff0000ffe0fff8 =20 +/* Mask for PASID Device IOTLB Invalidate Descriptor */ +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_ADDR(val) ((val) & \ + 0xfffffffffffff000ULL) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_SIZE(val) ((val >> 11) & 0x1) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_GLOBAL(val) ((val) & 0x1) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_SID(val) (((val) >> 16) & 0xffffUL= L) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_PASID(val) ((val >> 32) & 0xfffffU= LL) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_RSVD_HI 0x7feULL +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_RSVD_LO 0xfff000000000f000ULL + /* Rsvd field masks for spte */ #define VTD_SPTE_SNP 0x800ULL =20 diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 7ae8df2f49..de4e8afcf9 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2996,6 +2996,49 @@ static void do_invalidate_device_tlb(VTDAddressSpace= *vtd_dev_as, memory_region_notify_iommu(&vtd_dev_as->iommu, 0, event); } =20 +static bool vtd_process_device_piotlb_desc(IntelIOMMUState *s, + VTDInvDesc *inv_desc) +{ + uint16_t sid; + VTDAddressSpace *vtd_dev_as; + bool size; + bool global; + hwaddr addr; + uint32_t pasid; + + if ((inv_desc->hi & VTD_INV_DESC_PASID_DEVICE_IOTLB_RSVD_HI) || + (inv_desc->lo & VTD_INV_DESC_PASID_DEVICE_IOTLB_RSVD_LO)) { + error_report_once("%s: invalid pasid-based dev iotlb inv desc:" + "hi=3D%"PRIx64 "(reserved nonzero)", + __func__, inv_desc->hi); + return false; + } + + global =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_GLOBAL(inv_desc->hi); + size =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_SIZE(inv_desc->hi); + addr =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_ADDR(inv_desc->hi); + sid =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_SID(inv_desc->lo); + if (global) { + QLIST_FOREACH(vtd_dev_as, &s->vtd_as_with_notifiers, next) { + if ((vtd_dev_as->pasid !=3D PCI_NO_PASID) && + (PCI_BUILD_BDF(pci_bus_num(vtd_dev_as->bus), + vtd_dev_as->devfn) =3D=3D sid))= { + do_invalidate_device_tlb(vtd_dev_as, size, addr); + } + } + } else { + pasid =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_PASID(inv_desc->lo); + vtd_dev_as =3D vtd_get_as_by_sid_and_pasid(s, sid, pasid); + if (!vtd_dev_as) { + return true; + } + + do_invalidate_device_tlb(vtd_dev_as, size, addr); + } + + return true; +} + static bool vtd_process_device_iotlb_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) { @@ -3090,6 +3133,13 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s) } break; =20 + case VTD_INV_DESC_DEV_PIOTLB: + trace_vtd_inv_desc("device-piotlb", inv_desc.hi, inv_desc.lo); + if (!vtd_process_device_piotlb_desc(s, &inv_desc)) { + return false; + } + break; + case VTD_INV_DESC_DEVICE: trace_vtd_inv_desc("device", inv_desc.hi, inv_desc.lo); if (!vtd_process_device_iotlb_desc(s, &inv_desc)) { --=20 2.34.1