diff options
Diffstat (limited to 'qemu/include/hw/vfio/vfio-common.h')
| -rw-r--r-- | qemu/include/hw/vfio/vfio-common.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/qemu/include/hw/vfio/vfio-common.h b/qemu/include/hw/vfio/vfio-common.h new file mode 100644 index 000000000..59a321d47 --- /dev/null +++ b/qemu/include/hw/vfio/vfio-common.h @@ -0,0 +1,149 @@ +/* + * common header for vfio based device assignment support + * + * Copyright Red Hat, Inc. 2012 + * + * Authors: + * Alex Williamson <alex.williamson@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + * Based on qemu-kvm device-assignment: + * Adapted for KVM by Qumranet. + * Copyright (c) 2007, Neocleus, Alex Novik (alex@neocleus.com) + * Copyright (c) 2007, Neocleus, Guy Zana (guy@neocleus.com) + * Copyright (C) 2008, Qumranet, Amit Shah (amit.shah@qumranet.com) + * Copyright (C) 2008, Red Hat, Amit Shah (amit.shah@redhat.com) + * Copyright (C) 2008, IBM, Muli Ben-Yehuda (muli@il.ibm.com) + */ +#ifndef HW_VFIO_VFIO_COMMON_H +#define HW_VFIO_VFIO_COMMON_H + +#include "qemu-common.h" +#include "exec/address-spaces.h" +#include "exec/memory.h" +#include "qemu/queue.h" +#include "qemu/notify.h" + +/*#define DEBUG_VFIO*/ +#ifdef DEBUG_VFIO +#define DPRINTF(fmt, ...) \ + do { fprintf(stderr, "vfio: " fmt, ## __VA_ARGS__); } while (0) +#else +#define DPRINTF(fmt, ...) \ + do { } while (0) +#endif + +/* Extra debugging, trap acceleration paths for more logging */ +#define VFIO_ALLOW_KVM_INTX 1 +#define VFIO_ALLOW_KVM_MSI 1 +#define VFIO_ALLOW_KVM_MSIX 1 + +enum { + VFIO_DEVICE_TYPE_PCI = 0, + VFIO_DEVICE_TYPE_PLATFORM = 1, +}; + +typedef struct VFIORegion { + struct VFIODevice *vbasedev; + off_t fd_offset; /* offset of region within device fd */ + MemoryRegion mem; /* slow, read/write access */ + MemoryRegion mmap_mem; /* direct mapped access */ + void *mmap; + size_t size; + uint32_t flags; /* VFIO region flags (rd/wr/mmap) */ + uint8_t nr; /* cache the region number for debug */ +} VFIORegion; + +typedef struct VFIOAddressSpace { + AddressSpace *as; + QLIST_HEAD(, VFIOContainer) containers; + QLIST_ENTRY(VFIOAddressSpace) list; +} VFIOAddressSpace; + +struct VFIOGroup; + +typedef struct VFIOType1 { + MemoryListener listener; + int error; + bool initialized; +} VFIOType1; + +typedef struct VFIOContainer { + VFIOAddressSpace *space; + int fd; /* /dev/vfio/vfio, empowered by the attached groups */ + struct { + /* enable abstraction to support various iommu backends */ + union { + VFIOType1 type1; + }; + void (*release)(struct VFIOContainer *); + } iommu_data; + QLIST_HEAD(, VFIOGuestIOMMU) giommu_list; + QLIST_HEAD(, VFIOGroup) group_list; + QLIST_ENTRY(VFIOContainer) next; +} VFIOContainer; + +typedef struct VFIOGuestIOMMU { + VFIOContainer *container; + MemoryRegion *iommu; + Notifier n; + QLIST_ENTRY(VFIOGuestIOMMU) giommu_next; +} VFIOGuestIOMMU; + +typedef struct VFIODeviceOps VFIODeviceOps; + +typedef struct VFIODevice { + QLIST_ENTRY(VFIODevice) next; + struct VFIOGroup *group; + char *name; + int fd; + int type; + bool reset_works; + bool needs_reset; + bool allow_mmap; + VFIODeviceOps *ops; + unsigned int num_irqs; + unsigned int num_regions; + unsigned int flags; +} VFIODevice; + +struct VFIODeviceOps { + void (*vfio_compute_needs_reset)(VFIODevice *vdev); + int (*vfio_hot_reset_multi)(VFIODevice *vdev); + void (*vfio_eoi)(VFIODevice *vdev); +}; + +typedef struct VFIOGroup { + int fd; + int groupid; + VFIOContainer *container; + QLIST_HEAD(, VFIODevice) device_list; + QLIST_ENTRY(VFIOGroup) next; + QLIST_ENTRY(VFIOGroup) container_next; +} VFIOGroup; + +void vfio_put_base_device(VFIODevice *vbasedev); +void vfio_disable_irqindex(VFIODevice *vbasedev, int index); +void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index); +void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index); +void vfio_region_write(void *opaque, hwaddr addr, + uint64_t data, unsigned size); +uint64_t vfio_region_read(void *opaque, + hwaddr addr, unsigned size); +int vfio_mmap_region(Object *vdev, VFIORegion *region, + MemoryRegion *mem, MemoryRegion *submem, + void **map, size_t size, off_t offset, + const char *name); +void vfio_reset_handler(void *opaque); +VFIOGroup *vfio_get_group(int groupid, AddressSpace *as); +void vfio_put_group(VFIOGroup *group); +int vfio_get_device(VFIOGroup *group, const char *name, + VFIODevice *vbasedev); + +extern const MemoryRegionOps vfio_region_ops; +extern QLIST_HEAD(vfio_group_head, VFIOGroup) vfio_group_list; +extern QLIST_HEAD(vfio_as_head, VFIOAddressSpace) vfio_address_spaces; + +#endif /* !HW_VFIO_VFIO_COMMON_H */ |