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| author | Ingo Molnar <mingo@kernel.org> | 2015-02-26 14:24:50 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-02-26 14:24:50 +0300 |
| commit | e9e4e44309f866b115d08ab4a54834008c50a8a4 (patch) | |
| tree | ae9f91e682a4d6592ef263f30a4a0b1a862b7987 /drivers/vfio/pci/vfio_pci.c | |
| parent | 8a26ce4e544659256349551283414df504889a59 (diff) | |
| parent | c517d838eb7d07bbe9507871fab3931deccff539 (diff) | |
| download | linux-e9e4e44309f866b115d08ab4a54834008c50a8a4.tar.xz | |
Merge tag 'v4.0-rc1' into perf/core, to refresh the tree
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/vfio/pci/vfio_pci.c')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index 7cc0122a18ce..f8a186381ae8 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -239,9 +239,12 @@ static int vfio_pci_get_irq_count(struct vfio_pci_device *vdev, int irq_type) return (flags & PCI_MSIX_FLAGS_QSIZE) + 1; } - } else if (irq_type == VFIO_PCI_ERR_IRQ_INDEX) + } else if (irq_type == VFIO_PCI_ERR_IRQ_INDEX) { if (pci_is_pcie(vdev->pdev)) return 1; + } else if (irq_type == VFIO_PCI_REQ_IRQ_INDEX) { + return 1; + } return 0; } @@ -464,6 +467,7 @@ static long vfio_pci_ioctl(void *device_data, switch (info.index) { case VFIO_PCI_INTX_IRQ_INDEX ... VFIO_PCI_MSIX_IRQ_INDEX: + case VFIO_PCI_REQ_IRQ_INDEX: break; case VFIO_PCI_ERR_IRQ_INDEX: if (pci_is_pcie(vdev->pdev)) @@ -828,6 +832,20 @@ static int vfio_pci_mmap(void *device_data, struct vm_area_struct *vma) req_len, vma->vm_page_prot); } +static void vfio_pci_request(void *device_data, unsigned int count) +{ + struct vfio_pci_device *vdev = device_data; + + mutex_lock(&vdev->igate); + + if (vdev->req_trigger) { + dev_dbg(&vdev->pdev->dev, "Requesting device from user\n"); + eventfd_signal(vdev->req_trigger, 1); + } + + mutex_unlock(&vdev->igate); +} + static const struct vfio_device_ops vfio_pci_ops = { .name = "vfio-pci", .open = vfio_pci_open, @@ -836,6 +854,7 @@ static const struct vfio_device_ops vfio_pci_ops = { .read = vfio_pci_read, .write = vfio_pci_write, .mmap = vfio_pci_mmap, + .request = vfio_pci_request, }; static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |