#include <linux/vfio.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
-#define RTE_PCI_MSIX_TABLE_BIR 0x7
+#define RTE_PCI_MSIX_TABLE_BIR 0x7
+#define RTE_PCI_MSIX_TABLE_OFFSET 0xfffffff8
+#define RTE_PCI_MSIX_FLAGS_QSIZE 0x07ff
#else
-#define RTE_PCI_MSIX_TABLE_BIR PCI_MSIX_TABLE_BIR
+#define RTE_PCI_MSIX_TABLE_BIR PCI_MSIX_TABLE_BIR
+#define RTE_PCI_MSIX_TABLE_OFFSET PCI_MSIX_TABLE_OFFSET
+#define RTE_PCI_MSIX_FLAGS_QSIZE PCI_MSIX_FLAGS_QSIZE
#endif
+#define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU
+
+#ifndef VFIO_SPAPR_TCE_v2_IOMMU
+#define RTE_VFIO_SPAPR 7
+#define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
+#define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
+#define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
+
+struct vfio_iommu_spapr_register_memory {
+ uint32_t argsz;
+ uint32_t flags;
+ uint64_t vaddr;
+ uint64_t size;
+};
+
+struct vfio_iommu_spapr_tce_create {
+ uint32_t argsz;
+ uint32_t flags;
+ /* in */
+ uint32_t page_shift;
+ uint32_t __resv1;
+ uint64_t window_size;
+ uint32_t levels;
+ uint32_t __resv2;
+ /* out */
+ uint64_t start_addr;
+};
+
+struct vfio_iommu_spapr_tce_remove {
+ uint32_t argsz;
+ uint32_t flags;
+ /* in */
+ uint64_t start_addr;
+};
+
+struct vfio_iommu_spapr_tce_ddw_info {
+ uint64_t pgsizes;
+ uint32_t max_dynamic_windows_supported;
+ uint32_t levels;
+};
+
+/* SPAPR_v2 is not present, but SPAPR might be */
+#ifndef VFIO_SPAPR_TCE_IOMMU
+#define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
+
+struct vfio_iommu_spapr_tce_info {
+ uint32_t argsz;
+ uint32_t flags;
+ uint32_t dma32_window_start;
+ uint32_t dma32_window_size;
+ struct vfio_iommu_spapr_tce_ddw_info ddw;
+};
+#endif /* VFIO_SPAPR_TCE_IOMMU */
+
+#else /* VFIO_SPAPR_TCE_v2_IOMMU */
+#define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
+#define RTE_VFIO_NOIOMMU 8
+#else
+#define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU
+#endif
+
+#define VFIO_MAX_GROUPS 64
+
+/*
+ * Function prototypes for VFIO multiprocess sync functions
+ */
+int vfio_mp_sync_send_request(int socket, int req);
+int vfio_mp_sync_receive_request(int socket);
+int vfio_mp_sync_send_fd(int socket, int fd);
+int vfio_mp_sync_receive_fd(int socket);
+int vfio_mp_sync_connect_to_primary(void);
+
+/*
+ * we don't need to store device fd's anywhere since they can be obtained from
+ * the group fd via an ioctl() call.
+ */
+struct vfio_group {
+ int group_no;
+ int fd;
+ int devices;
+};
+
+struct vfio_config {
+ int vfio_enabled;
+ int vfio_container_fd;
+ int vfio_active_groups;
+ struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
+};
+
+#define VFIO_DIR "/dev/vfio"
+#define VFIO_CONTAINER_PATH "/dev/vfio/vfio"
+#define VFIO_GROUP_FMT "/dev/vfio/%u"
+#define VFIO_NOIOMMU_GROUP_FMT "/dev/vfio/noiommu-%u"
+#define VFIO_GET_REGION_ADDR(x) ((uint64_t) x << 40ULL)
+#define VFIO_GET_REGION_IDX(x) (x >> 40)
+#define VFIO_NOIOMMU_MODE \
+ "/sys/module/vfio/parameters/enable_unsafe_noiommu_mode"
+
+/* DMA mapping function prototype.
+ * Takes VFIO container fd as a parameter.
+ * Returns 0 on success, -1 on error.
+ * */
+typedef int (*vfio_dma_func_t)(int);
+
+struct vfio_iommu_type {
+ int type_id;
+ const char *name;
+ vfio_dma_func_t dma_map_func;
+};
+
+/* pick IOMMU type. returns a pointer to vfio_iommu_type or NULL for error */
+const struct vfio_iommu_type *
+vfio_set_iommu_type(int vfio_container_fd);
+
+/* check if we have any supported extensions */
+int
+vfio_has_supported_extensions(int vfio_container_fd);
+
+/* open container fd or get an existing one */
+int
+vfio_get_container_fd(void);
+
+/* parse IOMMU group number for a device
+ * returns 1 on success, -1 for errors, 0 for non-existent group
+ */
+int
+vfio_get_group_no(const char *sysfs_base,
+ const char *dev_addr, int *iommu_group_no);
+
+/* open group fd or get an existing one */
+int
+vfio_get_group_fd(int iommu_group_no);
+
+/* remove group fd from internal VFIO group fd array */
+int
+clear_group(int vfio_group_fd);
+
+/**
+ * Setup vfio_cfg for the device identified by its address. It discovers
+ * the configured I/O MMU groups or sets a new one for the device. If a new
+ * groups is assigned, the DMA mapping is performed.
+ * Returns 0 on success, a negative value on failure and a positive value in
+ * case the given device cannot be managed this way.
+ */
+int vfio_setup_device(const char *sysfs_base, const char *dev_addr,
+ int *vfio_dev_fd, struct vfio_device_info *device_info);
+
+int vfio_release_device(const char *sysfs_base, const char *dev_addr, int fd);
+
+int vfio_enable(const char *modname);
+int vfio_is_enabled(const char *modname);
+
+int pci_vfio_is_enabled(void);
+
+int vfio_mp_sync_setup(void);
+
+int vfio_noiommu_is_enabled(void);
+
+#define SOCKET_REQ_CONTAINER 0x100
+#define SOCKET_REQ_GROUP 0x200
+#define SOCKET_CLR_GROUP 0x300
+#define SOCKET_OK 0x0
+#define SOCKET_NO_FD 0x1
+#define SOCKET_ERR 0xFF
+
#define VFIO_PRESENT
#endif /* kernel version */
#endif /* RTE_EAL_VFIO */
git.droids-corp.org / dpdk.git / blobdiff