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Thu, 30 May 2024 12:25:02 +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 15.20.7633.018; Thu, 30 May 2024 12:25:02 +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 v1 4/8] pci: declare structures and IOMMU operation for PRI Thread-Topic: [PATCH v1 4/8] pci: declare structures and IOMMU operation for PRI Thread-Index: AQHasoxlVf0NBxjHCEirwX3kIlKGLA== Date: Thu, 30 May 2024 12:25:02 +0000 Message-ID: <20240530122439.42888-5-clement.mathieu--drif@eviden.com> References: <20240530122439.42888-1-clement.mathieu--drif@eviden.com> In-Reply-To: <20240530122439.42888-1-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=smarthost2.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, T_SCC_BODY_TEXT_LINE=-0.01 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 The API deliberately designed to be similar to the ATS one. We define a struct that stores a function pointer to the device's callback. Registering and unregistering a notifier is done using a pair of functions that will be added in a future commit of this series. An IOMMU can support PRI by implementing the iommu_pri_request_page operation declared in IOMMUMemoryRegionClass. Signed-off-by: Clément Mathieu--Drif --- include/exec/memory.h | 30 ++++++++++++++++++++++++++++++ include/hw/pci/pci_bus.h | 1 + 2 files changed, 31 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 0ced7c33b1..f4780d3920 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -218,6 +218,25 @@ typedef struct IOMMUTLBEvent { IOMMUTLBEntry entry; } IOMMUTLBEvent; +/* Page Request Interface */ +#define IOMMU_PRI_RESP_CODE_SUCCESS(val) (!(val)) +#define IOMMU_PRI_RESP_CODE_INVALID_REQUEST(val) ((val) == 0x1u) +#define IOMMU_PRI_RESP_CODE_FAILURE(val) ((val) & 0xeu) + +typedef struct IOMMUPRIResponse { + uint8_t response_code; + uint16_t prgi; +} IOMMUPRIResponse; + +struct IOMMUPRINotifier; + +typedef void (*IOMMUPRINotify)(struct IOMMUPRINotifier *notifier, + IOMMUPRIResponse *response); + +typedef struct IOMMUPRINotifier { + IOMMUPRINotify notify; +} IOMMUPRINotifier; + /* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */ #define RAM_PREALLOC (1 << 0) @@ -589,6 +608,16 @@ struct IOMMUMemoryRegionClass { IOMMUTLBEntry *result, size_t result_length, uint32_t *err_count); + + /** + * @iommu_pri_request_page: + * This method must be implemented if the IOMMU has PRI enabled + * + * @see pci_pri_request_page_pasid + */ + int (*iommu_pri_request_page)(IOMMUMemoryRegion *iommu, hwaddr addr, + bool lpig, uint16_t prgi, bool is_read, + bool is_write, bool exec_req, bool priv_req); }; typedef struct RamDiscardListener RamDiscardListener; @@ -878,6 +907,7 @@ struct IOMMUMemoryRegion { QLIST_HEAD(, IOMMUNotifier) iommu_notify; IOMMUNotifierFlag iommu_notify_flags; + IOMMUPRINotifier *pri_notifier; }; #define IOMMU_NOTIFIER_FOREACH(n, mr) \ diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h index 2261312546..eaa777fde4 100644 --- a/include/hw/pci/pci_bus.h +++ b/include/hw/pci/pci_bus.h @@ -29,6 +29,7 @@ enum PCIBusFlags { }; #define PCI_NO_PASID UINT32_MAX +#define PCI_PRI_PRGI_MASK 0x1ffU struct PCIBus { BusState qbus;