Merge tag 'asoc-fix-4.17-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-microblaze.git] / drivers / vfio / pci / vfio_pci_private.h

diff --git a/drivers/vfio/pci/vfio_pci_private.h b/drivers/vfio/pci/vfio_pci_private.h
index f561ac1..cde3b5d 100644 (file)
--- a/drivers/vfio/pci/vfio_pci_private.h
+++ b/drivers/vfio/pci/vfio_pci_private.h
@@ -29,6 +29,19 @@
 #define PCI_CAP_ID_INVALID             0xFF    /* default raw access */
 #define PCI_CAP_ID_INVALID_VIRT                0xFE    /* default virt access */
 
+/* Cap maximum number of ioeventfds per device (arbitrary) */
+#define VFIO_PCI_IOEVENTFD_MAX         1000
+
+struct vfio_pci_ioeventfd {
+       struct list_head        next;
+       struct virqfd           *virqfd;
+       void __iomem            *addr;
+       uint64_t                data;
+       loff_t                  pos;
+       int                     bar;
+       int                     count;
+};
+
 struct vfio_pci_irq_ctx {
        struct eventfd_ctx      *trigger;
        struct virqfd           *unmask;
@@ -92,9 +105,12 @@ struct vfio_pci_device {
        bool                    nointx;
        struct pci_saved_state  *pci_saved_state;
        int                     refcnt;
+       int                     ioeventfds_nr;
        struct eventfd_ctx      *err_trigger;
        struct eventfd_ctx      *req_trigger;
        struct list_head        dummy_resources_list;
+       struct mutex            ioeventfds_lock;
+       struct list_head        ioeventfds_list;
 };
 
 #define is_intx(vdev) (vdev->irq_type == VFIO_PCI_INTX_IRQ_INDEX)
@@ -120,6 +136,9 @@ extern ssize_t vfio_pci_bar_rw(struct vfio_pci_device *vdev, char __user *buf,
 extern ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf,
                               size_t count, loff_t *ppos, bool iswrite);
 
+extern long vfio_pci_ioeventfd(struct vfio_pci_device *vdev, loff_t offset,
+                              uint64_t data, int count, int fd);
+
 extern int vfio_pci_init_perm_bits(void);
 extern void vfio_pci_uninit_perm_bits(void);