projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 0ea2730b EA |
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" | |
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21 | #include "qemu/event_notifier.h" |
| 22 | #include "qemu/queue.h" | |
| 23 | #include "hw/irq.h" | |
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24 | |
| 25 | #define TYPE_VFIO_PLATFORM "vfio-platform" | |
| 26 | ||
| 38559979 EA |
27 | enum { |
| 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 | ||
| 34 | typedef struct VFIOINTp { | |
| 35 | QLIST_ENTRY(VFIOINTp) next; /* entry for IRQ list */ | |
| 36 | QSIMPLEQ_ENTRY(VFIOINTp) pqnext; /* entry for pending IRQ queue */ | |
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37 | EventNotifier *interrupt; /* eventfd triggered on interrupt */ |
| 38 | EventNotifier *unmask; /* eventfd for unmask on QEMU bypass */ | |
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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 */ | |
| fb5f8164 | 44 | bool kvm_accel; /* set when QEMU bypass through KVM enabled */ |
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45 | } VFIOINTp; |
| 46 | ||
| 47 | /* function type for user side eventfd handler */ | |
| 48 | typedef void (*eventfd_user_side_handler_t)(VFIOINTp *intp); | |
| 49 | ||
| 0ea2730b EA |
50 | typedef struct VFIOPlatformDevice { |
| 51 | SysBusDevice sbdev; | |
| 52 | VFIODevice vbasedev; /* not a QOM object */ | |
| 53 | VFIORegion **regions; | |
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54 | QLIST_HEAD(, VFIOINTp) intp_list; /* list of IRQs */ |
| 55 | /* queue of pending IRQs */ | |
| b58deb34 | 56 | QSIMPLEQ_HEAD(, VFIOINTp) pending_intp_queue; |
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57 | char *compat; /* DT compatible values, separated by NUL */ |
| 58 | unsigned int num_compat; /* number of compatible values */ | |
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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 */ | |
| fb5f8164 | 62 | bool irqfd_allowed; /* debug option to force irqfd on/off */ |
| 0ea2730b EA |
63 | } VFIOPlatformDevice; |
| 64 | ||
| 65 | typedef struct VFIOPlatformDeviceClass { | |
| 66 | /*< private >*/ | |
| 67 | SysBusDeviceClass parent_class; | |
| 68 | /*< public >*/ | |
| 69 | } VFIOPlatformDeviceClass; | |
| 70 | ||
| 71 | #define VFIO_PLATFORM_DEVICE(obj) \ | |
| 72 | OBJECT_CHECK(VFIOPlatformDevice, (obj), TYPE_VFIO_PLATFORM) | |
| 73 | #define VFIO_PLATFORM_DEVICE_CLASS(klass) \ | |
| 74 | OBJECT_CLASS_CHECK(VFIOPlatformDeviceClass, (klass), TYPE_VFIO_PLATFORM) | |
| 75 | #define VFIO_PLATFORM_DEVICE_GET_CLASS(obj) \ | |
| 76 | OBJECT_GET_CLASS(VFIOPlatformDeviceClass, (obj), TYPE_VFIO_PLATFORM) | |
| 77 | ||
| 175de524 | 78 | #endif /* HW_VFIO_VFIO_PLATFORM_H */ |