cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

vfio-common.h (7755B)

      1/*
      2 * common header for vfio based device assignment support
      3 *
      4 * Copyright Red Hat, Inc. 2012
      5 *
      6 * Authors:
      7 *  Alex Williamson <alex.williamson@redhat.com>
      8 *
      9 * This work is licensed under the terms of the GNU GPL, version 2.  See
     10 * the COPYING file in the top-level directory.
     11 *
     12 * Based on qemu-kvm device-assignment:
     13 *  Adapted for KVM by Qumranet.
     14 *  Copyright (c) 2007, Neocleus, Alex Novik (alex@neocleus.com)
     15 *  Copyright (c) 2007, Neocleus, Guy Zana (guy@neocleus.com)
     16 *  Copyright (C) 2008, Qumranet, Amit Shah (amit.shah@qumranet.com)
     17 *  Copyright (C) 2008, Red Hat, Amit Shah (amit.shah@redhat.com)
     18 *  Copyright (C) 2008, IBM, Muli Ben-Yehuda (muli@il.ibm.com)
     19 */
     20
     21#ifndef HW_VFIO_VFIO_COMMON_H
     22#define HW_VFIO_VFIO_COMMON_H
     23
     24#include "exec/memory.h"
     25#include "qemu/queue.h"
     26#include "qemu/notify.h"
     27#include "ui/console.h"
     28#include "hw/display/ramfb.h"
     29#ifdef CONFIG_LINUX
     30#include <linux/vfio.h>
     31#endif
     32#include "sysemu/sysemu.h"
     33
     34#define VFIO_MSG_PREFIX "vfio %s: "
     35
     36enum {
     37    VFIO_DEVICE_TYPE_PCI = 0,
     38    VFIO_DEVICE_TYPE_PLATFORM = 1,
     39    VFIO_DEVICE_TYPE_CCW = 2,
     40    VFIO_DEVICE_TYPE_AP = 3,
     41};
     42
     43typedef struct VFIOMmap {
     44    MemoryRegion mem;
     45    void *mmap;
     46    off_t offset;
     47    size_t size;
     48} VFIOMmap;
     49
     50typedef struct VFIORegion {
     51    struct VFIODevice *vbasedev;
     52    off_t fd_offset; /* offset of region within device fd */
     53    MemoryRegion *mem; /* slow, read/write access */
     54    size_t size;
     55    uint32_t flags; /* VFIO region flags (rd/wr/mmap) */
     56    uint32_t nr_mmaps;
     57    VFIOMmap *mmaps;
     58    uint8_t nr; /* cache the region number for debug */
     59} VFIORegion;
     60
     61typedef struct VFIOMigration {
     62    struct VFIODevice *vbasedev;
     63    VMChangeStateEntry *vm_state;
     64    VFIORegion region;
     65    uint32_t device_state;
     66    int vm_running;
     67    Notifier migration_state;
     68    uint64_t pending_bytes;
     69} VFIOMigration;
     70
     71typedef struct VFIOAddressSpace {
     72    AddressSpace *as;
     73    QLIST_HEAD(, VFIOContainer) containers;
     74    QLIST_ENTRY(VFIOAddressSpace) list;
     75} VFIOAddressSpace;
     76
     77struct VFIOGroup;
     78
     79typedef struct VFIOContainer {
     80    VFIOAddressSpace *space;
     81    int fd; /* /dev/vfio/vfio, empowered by the attached groups */
     82    MemoryListener listener;
     83    MemoryListener prereg_listener;
     84    unsigned iommu_type;
     85    Error *error;
     86    bool initialized;
     87    bool dirty_pages_supported;
     88    uint64_t dirty_pgsizes;
     89    uint64_t max_dirty_bitmap_size;
     90    unsigned long pgsizes;
     91    unsigned int dma_max_mappings;
     92    QLIST_HEAD(, VFIOGuestIOMMU) giommu_list;
     93    QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list;
     94    QLIST_HEAD(, VFIOGroup) group_list;
     95    QLIST_HEAD(, VFIORamDiscardListener) vrdl_list;
     96    QLIST_ENTRY(VFIOContainer) next;
     97} VFIOContainer;
     98
     99typedef struct VFIOGuestIOMMU {
    100    VFIOContainer *container;
    101    IOMMUMemoryRegion *iommu;
    102    hwaddr iommu_offset;
    103    IOMMUNotifier n;
    104    QLIST_ENTRY(VFIOGuestIOMMU) giommu_next;
    105} VFIOGuestIOMMU;
    106
    107typedef struct VFIORamDiscardListener {
    108    VFIOContainer *container;
    109    MemoryRegion *mr;
    110    hwaddr offset_within_address_space;
    111    hwaddr size;
    112    uint64_t granularity;
    113    RamDiscardListener listener;
    114    QLIST_ENTRY(VFIORamDiscardListener) next;
    115} VFIORamDiscardListener;
    116
    117typedef struct VFIOHostDMAWindow {
    118    hwaddr min_iova;
    119    hwaddr max_iova;
    120    uint64_t iova_pgsizes;
    121    QLIST_ENTRY(VFIOHostDMAWindow) hostwin_next;
    122} VFIOHostDMAWindow;
    123
    124typedef struct VFIODeviceOps VFIODeviceOps;
    125
    126typedef struct VFIODevice {
    127    QLIST_ENTRY(VFIODevice) next;
    128    struct VFIOGroup *group;
    129    char *sysfsdev;
    130    char *name;
    131    DeviceState *dev;
    132    int fd;
    133    int type;
    134    bool reset_works;
    135    bool needs_reset;
    136    bool no_mmap;
    137    bool ram_block_discard_allowed;
    138    bool enable_migration;
    139    VFIODeviceOps *ops;
    140    unsigned int num_irqs;
    141    unsigned int num_regions;
    142    unsigned int flags;
    143    VFIOMigration *migration;
    144    Error *migration_blocker;
    145    OnOffAuto pre_copy_dirty_page_tracking;
    146} VFIODevice;
    147
    148struct VFIODeviceOps {
    149    void (*vfio_compute_needs_reset)(VFIODevice *vdev);
    150    int (*vfio_hot_reset_multi)(VFIODevice *vdev);
    151    void (*vfio_eoi)(VFIODevice *vdev);
    152    Object *(*vfio_get_object)(VFIODevice *vdev);
    153    void (*vfio_save_config)(VFIODevice *vdev, QEMUFile *f);
    154    int (*vfio_load_config)(VFIODevice *vdev, QEMUFile *f);
    155};
    156
    157typedef struct VFIOGroup {
    158    int fd;
    159    int groupid;
    160    VFIOContainer *container;
    161    QLIST_HEAD(, VFIODevice) device_list;
    162    QLIST_ENTRY(VFIOGroup) next;
    163    QLIST_ENTRY(VFIOGroup) container_next;
    164    bool ram_block_discard_allowed;
    165} VFIOGroup;
    166
    167typedef struct VFIODMABuf {
    168    QemuDmaBuf buf;
    169    uint32_t pos_x, pos_y, pos_updates;
    170    uint32_t hot_x, hot_y, hot_updates;
    171    int dmabuf_id;
    172    QTAILQ_ENTRY(VFIODMABuf) next;
    173} VFIODMABuf;
    174
    175typedef struct VFIODisplay {
    176    QemuConsole *con;
    177    RAMFBState *ramfb;
    178    struct vfio_region_info *edid_info;
    179    struct vfio_region_gfx_edid *edid_regs;
    180    uint8_t *edid_blob;
    181    QEMUTimer *edid_link_timer;
    182    struct {
    183        VFIORegion buffer;
    184        DisplaySurface *surface;
    185    } region;
    186    struct {
    187        QTAILQ_HEAD(, VFIODMABuf) bufs;
    188        VFIODMABuf *primary;
    189        VFIODMABuf *cursor;
    190    } dmabuf;
    191} VFIODisplay;
    192
    193void vfio_put_base_device(VFIODevice *vbasedev);
    194void vfio_disable_irqindex(VFIODevice *vbasedev, int index);
    195void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
    196void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index);
    197int vfio_set_irq_signaling(VFIODevice *vbasedev, int index, int subindex,
    198                           int action, int fd, Error **errp);
    199void vfio_region_write(void *opaque, hwaddr addr,
    200                           uint64_t data, unsigned size);
    201uint64_t vfio_region_read(void *opaque,
    202                          hwaddr addr, unsigned size);
    203int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region,
    204                      int index, const char *name);
    205int vfio_region_mmap(VFIORegion *region);
    206void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled);
    207void vfio_region_unmap(VFIORegion *region);
    208void vfio_region_exit(VFIORegion *region);
    209void vfio_region_finalize(VFIORegion *region);
    210void vfio_reset_handler(void *opaque);
    211VFIOGroup *vfio_get_group(int groupid, AddressSpace *as, Error **errp);
    212void vfio_put_group(VFIOGroup *group);
    213int vfio_get_device(VFIOGroup *group, const char *name,
    214                    VFIODevice *vbasedev, Error **errp);
    215
    216extern const MemoryRegionOps vfio_region_ops;
    217typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupList;
    218extern VFIOGroupList vfio_group_list;
    219
    220bool vfio_mig_active(void);
    221int64_t vfio_mig_bytes_transferred(void);
    222
    223#ifdef CONFIG_LINUX
    224int vfio_get_region_info(VFIODevice *vbasedev, int index,
    225                         struct vfio_region_info **info);
    226int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type,
    227                             uint32_t subtype, struct vfio_region_info **info);
    228bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type);
    229struct vfio_info_cap_header *
    230vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id);
    231bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
    232                             unsigned int *avail);
    233struct vfio_info_cap_header *
    234vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id);
    235#endif
    236extern const MemoryListener vfio_prereg_listener;
    237
    238int vfio_spapr_create_window(VFIOContainer *container,
    239                             MemoryRegionSection *section,
    240                             hwaddr *pgsize);
    241int vfio_spapr_remove_window(VFIOContainer *container,
    242                             hwaddr offset_within_address_space);
    243
    244int vfio_migration_probe(VFIODevice *vbasedev, Error **errp);
    245void vfio_migration_finalize(VFIODevice *vbasedev);
    246
    247#endif /* HW_VFIO_VFIO_COMMON_H */