cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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vfio-platform.h (2525B)

      1/*
      2 * vfio based device assignment support - platform devices
      3 *
      4 * Copyright Linaro Limited, 2014
      5 *
      6 * Authors:
      7 *  Kim Phillips <kim.phillips@linaro.org>
      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 vfio based PCI device assignment support:
     13 *  Copyright Red Hat, Inc. 2012
     14 */
     15
     16#ifndef HW_VFIO_VFIO_PLATFORM_H
     17#define HW_VFIO_VFIO_PLATFORM_H
     18
     19#include "hw/sysbus.h"
     20#include "hw/vfio/vfio-common.h"
     21#include "qemu/event_notifier.h"
     22#include "qemu/queue.h"
     23#include "qom/object.h"
     24
     25#define TYPE_VFIO_PLATFORM "vfio-platform"
     26
     27enum {
     28    VFIO_IRQ_INACTIVE = 0,
     29    VFIO_IRQ_PENDING = 1,
     30    VFIO_IRQ_ACTIVE = 2,
     31    /* VFIO_IRQ_ACTIVE_AND_PENDING cannot happen with VFIO */
     32};
     33
     34typedef struct VFIOINTp {
     35    QLIST_ENTRY(VFIOINTp) next; /* entry for IRQ list */
     36    QSIMPLEQ_ENTRY(VFIOINTp) pqnext; /* entry for pending IRQ queue */
     37    EventNotifier *interrupt; /* eventfd triggered on interrupt */
     38    EventNotifier *unmask; /* eventfd for unmask on QEMU bypass */
     39    qemu_irq qemuirq;
     40    struct VFIOPlatformDevice *vdev; /* back pointer to device */
     41    int state; /* inactive, pending, active */
     42    uint8_t pin; /* index */
     43    uint32_t flags; /* IRQ info flags */
     44    bool kvm_accel; /* set when QEMU bypass through KVM enabled */
     45} VFIOINTp;
     46
     47/* function type for user side eventfd handler */
     48typedef void (*eventfd_user_side_handler_t)(VFIOINTp *intp);
     49
     50struct VFIOPlatformDevice {
     51    SysBusDevice sbdev;
     52    VFIODevice vbasedev; /* not a QOM object */
     53    VFIORegion **regions;
     54    QLIST_HEAD(, VFIOINTp) intp_list; /* list of IRQs */
     55    /* queue of pending IRQs */
     56    QSIMPLEQ_HEAD(, VFIOINTp) pending_intp_queue;
     57    char *compat; /* DT compatible values, separated by NUL */
     58    unsigned int num_compat; /* number of compatible values */
     59    uint32_t mmap_timeout; /* delay to re-enable mmaps after interrupt */
     60    QEMUTimer *mmap_timer; /* allows fast-path resume after IRQ hit */
     61    QemuMutex intp_mutex; /* protect the intp_list IRQ state */
     62    bool irqfd_allowed; /* debug option to force irqfd on/off */
     63};
     64typedef struct VFIOPlatformDevice VFIOPlatformDevice;
     65
     66struct VFIOPlatformDeviceClass {
     67    /*< private >*/
     68    SysBusDeviceClass parent_class;
     69    /*< public >*/
     70};
     71typedef struct VFIOPlatformDeviceClass VFIOPlatformDeviceClass;
     72
     73DECLARE_OBJ_CHECKERS(VFIOPlatformDevice, VFIOPlatformDeviceClass,
     74                     VFIO_PLATFORM_DEVICE, TYPE_VFIO_PLATFORM)
     75
     76#endif /* HW_VFIO_VFIO_PLATFORM_H */