diff options
| author | Eric Auger <eric.auger@linaro.org> | 2015-06-08 09:25:26 -0600 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2015-06-08 09:25:26 -0600 |
| commit | 38559979bf0095a586f61bc9e028df36673f21a1 (patch) | |
| tree | c85be8d62f7275fe35b5dcd650b243af99853976 /include | |
| parent | 0ea2730bef0b764ce87f5d6859f9b1eac6069250 (diff) | |
hw/vfio/platform: add irq assignment
This patch adds the code requested to assign interrupts to
a guest. The interrupts are mediated through user handled
eventfds only.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Tested-by: Vikram Sethi <vikrams@codeaurora.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/vfio/vfio-platform.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-platform.h b/include/hw/vfio/vfio-platform.h index 338f0c6163..26b2ad6f4e 100644 --- a/include/hw/vfio/vfio-platform.h +++ b/include/hw/vfio/vfio-platform.h @@ -18,14 +18,45 @@ #include "hw/sysbus.h" #include "hw/vfio/vfio-common.h" +#include "qemu/event_notifier.h" +#include "qemu/queue.h" +#include "hw/irq.h" #define TYPE_VFIO_PLATFORM "vfio-platform" +enum { + VFIO_IRQ_INACTIVE = 0, + VFIO_IRQ_PENDING = 1, + VFIO_IRQ_ACTIVE = 2, + /* VFIO_IRQ_ACTIVE_AND_PENDING cannot happen with VFIO */ +}; + +typedef struct VFIOINTp { + QLIST_ENTRY(VFIOINTp) next; /* entry for IRQ list */ + QSIMPLEQ_ENTRY(VFIOINTp) pqnext; /* entry for pending IRQ queue */ + EventNotifier interrupt; /* eventfd triggered on interrupt */ + EventNotifier unmask; /* eventfd for unmask on QEMU bypass */ + qemu_irq qemuirq; + struct VFIOPlatformDevice *vdev; /* back pointer to device */ + int state; /* inactive, pending, active */ + uint8_t pin; /* index */ + uint32_t flags; /* IRQ info flags */ +} VFIOINTp; + +/* function type for user side eventfd handler */ +typedef void (*eventfd_user_side_handler_t)(VFIOINTp *intp); + typedef struct VFIOPlatformDevice { SysBusDevice sbdev; VFIODevice vbasedev; /* not a QOM object */ VFIORegion **regions; + QLIST_HEAD(, VFIOINTp) intp_list; /* list of IRQs */ + /* queue of pending IRQs */ + QSIMPLEQ_HEAD(pending_intp_queue, VFIOINTp) pending_intp_queue; char *compat; /* compatibility string */ + uint32_t mmap_timeout; /* delay to re-enable mmaps after interrupt */ + QEMUTimer *mmap_timer; /* allows fast-path resume after IRQ hit */ + QemuMutex intp_mutex; /* protect the intp_list IRQ state */ } VFIOPlatformDevice; typedef struct VFIOPlatformDeviceClass { |