ce5f6d49f5
As previously done for the sPAPR and legacy IOMMU backends, convert the VFIOIOMMUOps struct to a QOM interface. The set of of operations for this backend can be referenced with a literal typename instead of a C struct. Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com> Tested-by: Eric Farman <farman@linux.ibm.com> Signed-off-by: Cédric Le Goater <clg@redhat.com>
261 lines
8.5 KiB
C
261 lines
8.5 KiB
C
/*
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* common header for vfio based device assignment support
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*
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* Copyright Red Hat, Inc. 2012
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*
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* Authors:
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* Alex Williamson <alex.williamson@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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* Based on qemu-kvm device-assignment:
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* Adapted for KVM by Qumranet.
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* Copyright (c) 2007, Neocleus, Alex Novik (alex@neocleus.com)
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* Copyright (c) 2007, Neocleus, Guy Zana (guy@neocleus.com)
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* Copyright (C) 2008, Qumranet, Amit Shah (amit.shah@qumranet.com)
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* Copyright (C) 2008, Red Hat, Amit Shah (amit.shah@redhat.com)
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* Copyright (C) 2008, IBM, Muli Ben-Yehuda (muli@il.ibm.com)
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*/
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#ifndef HW_VFIO_VFIO_COMMON_H
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#define HW_VFIO_VFIO_COMMON_H
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#include "exec/memory.h"
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#include "qemu/queue.h"
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#include "qemu/notify.h"
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#include "ui/console.h"
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#include "hw/display/ramfb.h"
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#ifdef CONFIG_LINUX
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#include <linux/vfio.h>
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#endif
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#include "sysemu/sysemu.h"
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#include "hw/vfio/vfio-container-base.h"
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#define VFIO_MSG_PREFIX "vfio %s: "
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enum {
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VFIO_DEVICE_TYPE_PCI = 0,
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VFIO_DEVICE_TYPE_PLATFORM = 1,
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VFIO_DEVICE_TYPE_CCW = 2,
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VFIO_DEVICE_TYPE_AP = 3,
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};
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typedef struct VFIOMmap {
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MemoryRegion mem;
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void *mmap;
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off_t offset;
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size_t size;
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} VFIOMmap;
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typedef struct VFIORegion {
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struct VFIODevice *vbasedev;
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off_t fd_offset; /* offset of region within device fd */
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MemoryRegion *mem; /* slow, read/write access */
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size_t size;
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uint32_t flags; /* VFIO region flags (rd/wr/mmap) */
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uint32_t nr_mmaps;
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VFIOMmap *mmaps;
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uint8_t nr; /* cache the region number for debug */
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} VFIORegion;
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typedef struct VFIOMigration {
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struct VFIODevice *vbasedev;
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VMChangeStateEntry *vm_state;
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Notifier migration_state;
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uint32_t device_state;
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int data_fd;
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void *data_buffer;
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size_t data_buffer_size;
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uint64_t mig_flags;
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uint64_t precopy_init_size;
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uint64_t precopy_dirty_size;
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bool initial_data_sent;
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} VFIOMigration;
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struct VFIOGroup;
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typedef struct VFIOContainer {
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VFIOContainerBase bcontainer;
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int fd; /* /dev/vfio/vfio, empowered by the attached groups */
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unsigned iommu_type;
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QLIST_HEAD(, VFIOGroup) group_list;
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} VFIOContainer;
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typedef struct VFIOHostDMAWindow {
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hwaddr min_iova;
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hwaddr max_iova;
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uint64_t iova_pgsizes;
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QLIST_ENTRY(VFIOHostDMAWindow) hostwin_next;
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} VFIOHostDMAWindow;
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typedef struct IOMMUFDBackend IOMMUFDBackend;
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typedef struct VFIOIOMMUFDContainer {
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VFIOContainerBase bcontainer;
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IOMMUFDBackend *be;
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uint32_t ioas_id;
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} VFIOIOMMUFDContainer;
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typedef struct VFIODeviceOps VFIODeviceOps;
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typedef struct VFIODevice {
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QLIST_ENTRY(VFIODevice) next;
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QLIST_ENTRY(VFIODevice) container_next;
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QLIST_ENTRY(VFIODevice) global_next;
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struct VFIOGroup *group;
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VFIOContainerBase *bcontainer;
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char *sysfsdev;
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char *name;
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DeviceState *dev;
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int fd;
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int type;
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bool reset_works;
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bool needs_reset;
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bool no_mmap;
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bool ram_block_discard_allowed;
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OnOffAuto enable_migration;
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VFIODeviceOps *ops;
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unsigned int num_irqs;
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unsigned int num_regions;
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unsigned int flags;
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VFIOMigration *migration;
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Error *migration_blocker;
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OnOffAuto pre_copy_dirty_page_tracking;
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bool dirty_pages_supported;
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bool dirty_tracking;
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int devid;
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IOMMUFDBackend *iommufd;
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} VFIODevice;
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struct VFIODeviceOps {
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void (*vfio_compute_needs_reset)(VFIODevice *vdev);
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int (*vfio_hot_reset_multi)(VFIODevice *vdev);
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void (*vfio_eoi)(VFIODevice *vdev);
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Object *(*vfio_get_object)(VFIODevice *vdev);
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void (*vfio_save_config)(VFIODevice *vdev, QEMUFile *f);
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int (*vfio_load_config)(VFIODevice *vdev, QEMUFile *f);
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};
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typedef struct VFIOGroup {
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int fd;
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int groupid;
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VFIOContainer *container;
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QLIST_HEAD(, VFIODevice) device_list;
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QLIST_ENTRY(VFIOGroup) next;
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QLIST_ENTRY(VFIOGroup) container_next;
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bool ram_block_discard_allowed;
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} VFIOGroup;
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typedef struct VFIODMABuf {
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QemuDmaBuf buf;
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uint32_t pos_x, pos_y, pos_updates;
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uint32_t hot_x, hot_y, hot_updates;
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int dmabuf_id;
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QTAILQ_ENTRY(VFIODMABuf) next;
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} VFIODMABuf;
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typedef struct VFIODisplay {
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QemuConsole *con;
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RAMFBState *ramfb;
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struct vfio_region_info *edid_info;
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struct vfio_region_gfx_edid *edid_regs;
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uint8_t *edid_blob;
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QEMUTimer *edid_link_timer;
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struct {
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VFIORegion buffer;
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DisplaySurface *surface;
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} region;
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struct {
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QTAILQ_HEAD(, VFIODMABuf) bufs;
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VFIODMABuf *primary;
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VFIODMABuf *cursor;
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} dmabuf;
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} VFIODisplay;
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VFIOAddressSpace *vfio_get_address_space(AddressSpace *as);
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void vfio_put_address_space(VFIOAddressSpace *space);
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/* SPAPR specific */
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int vfio_spapr_container_init(VFIOContainer *container, Error **errp);
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void vfio_spapr_container_deinit(VFIOContainer *container);
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void vfio_disable_irqindex(VFIODevice *vbasedev, int index);
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void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
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void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index);
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int vfio_set_irq_signaling(VFIODevice *vbasedev, int index, int subindex,
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int action, int fd, Error **errp);
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void vfio_region_write(void *opaque, hwaddr addr,
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uint64_t data, unsigned size);
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uint64_t vfio_region_read(void *opaque,
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hwaddr addr, unsigned size);
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int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region,
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int index, const char *name);
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int vfio_region_mmap(VFIORegion *region);
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void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled);
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void vfio_region_unmap(VFIORegion *region);
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void vfio_region_exit(VFIORegion *region);
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void vfio_region_finalize(VFIORegion *region);
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void vfio_reset_handler(void *opaque);
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struct vfio_device_info *vfio_get_device_info(int fd);
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int vfio_attach_device(char *name, VFIODevice *vbasedev,
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AddressSpace *as, Error **errp);
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void vfio_detach_device(VFIODevice *vbasedev);
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int vfio_kvm_device_add_fd(int fd, Error **errp);
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int vfio_kvm_device_del_fd(int fd, Error **errp);
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extern const MemoryRegionOps vfio_region_ops;
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typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupList;
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typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList;
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extern VFIOGroupList vfio_group_list;
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extern VFIODeviceList vfio_device_list;
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extern const MemoryListener vfio_memory_listener;
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extern int vfio_kvm_device_fd;
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bool vfio_mig_active(void);
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int vfio_block_multiple_devices_migration(VFIODevice *vbasedev, Error **errp);
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void vfio_unblock_multiple_devices_migration(void);
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bool vfio_viommu_preset(VFIODevice *vbasedev);
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int64_t vfio_mig_bytes_transferred(void);
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void vfio_reset_bytes_transferred(void);
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bool vfio_device_state_is_running(VFIODevice *vbasedev);
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bool vfio_device_state_is_precopy(VFIODevice *vbasedev);
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#ifdef CONFIG_LINUX
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int vfio_get_region_info(VFIODevice *vbasedev, int index,
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struct vfio_region_info **info);
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int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type,
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uint32_t subtype, struct vfio_region_info **info);
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bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type);
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struct vfio_info_cap_header *
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vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id);
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bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
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unsigned int *avail);
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struct vfio_info_cap_header *
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vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id);
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struct vfio_info_cap_header *
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vfio_get_cap(void *ptr, uint32_t cap_offset, uint16_t id);
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#endif
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bool vfio_migration_realize(VFIODevice *vbasedev, Error **errp);
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void vfio_migration_exit(VFIODevice *vbasedev);
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int vfio_bitmap_alloc(VFIOBitmap *vbmap, hwaddr size);
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bool
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vfio_devices_all_running_and_mig_active(const VFIOContainerBase *bcontainer);
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bool
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vfio_devices_all_device_dirty_tracking(const VFIOContainerBase *bcontainer);
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int vfio_devices_query_dirty_bitmap(const VFIOContainerBase *bcontainer,
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VFIOBitmap *vbmap, hwaddr iova,
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hwaddr size);
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int vfio_get_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova,
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uint64_t size, ram_addr_t ram_addr);
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/* Returns 0 on success, or a negative errno. */
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int vfio_device_get_name(VFIODevice *vbasedev, Error **errp);
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void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp);
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void vfio_device_init(VFIODevice *vbasedev, int type, VFIODeviceOps *ops,
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DeviceState *dev, bool ram_discard);
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#endif /* HW_VFIO_VFIO_COMMON_H */
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