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| author | Yishai Hadas <yishaih@nvidia.com> | 2023-12-19 11:32:46 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-12-19 11:51:33 -0700 |
| commit | 8486ae162b3b6cc1055366f044495cf1966231f1 (patch) | |
| tree | 24dc68872d20582b1c88d0f00df5dfac4d2d8eae /include/linux/vfio_pci_core.h | |
| parent | 8bccc5b80678c69f7729ce4cd232c0aa98fa6277 (diff) | |
| download | linux-stable-8486ae162b3b6cc1055366f044495cf1966231f1.tar.gz linux-stable-8486ae162b3b6cc1055366f044495cf1966231f1.tar.bz2 linux-stable-8486ae162b3b6cc1055366f044495cf1966231f1.zip | |
vfio/pci: Expose vfio_pci_core_iowrite/read##size()
Expose vfio_pci_core_iowrite/read##size() to let it be used by drivers.
This functionality is needed to enable direct access to some physical
BAR of the device with the proper locks/checks in place.
The next patches from this series will use this functionality on a data
path flow when a direct access to the BAR is needed.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20231219093247.170936-9-yishaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/linux/vfio_pci_core.h')
| -rw-r--r-- | include/linux/vfio_pci_core.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h index 67ac58e20e1d..85e84b92751b 100644 --- a/include/linux/vfio_pci_core.h +++ b/include/linux/vfio_pci_core.h @@ -131,4 +131,23 @@ int vfio_pci_core_setup_barmap(struct vfio_pci_core_device *vdev, int bar); pci_ers_result_t vfio_pci_core_aer_err_detected(struct pci_dev *pdev, pci_channel_state_t state); +#define VFIO_IOWRITE_DECLATION(size) \ +int vfio_pci_core_iowrite##size(struct vfio_pci_core_device *vdev, \ + bool test_mem, u##size val, void __iomem *io); + +VFIO_IOWRITE_DECLATION(8) +VFIO_IOWRITE_DECLATION(16) +VFIO_IOWRITE_DECLATION(32) +#ifdef iowrite64 +VFIO_IOWRITE_DECLATION(64) +#endif + +#define VFIO_IOREAD_DECLATION(size) \ +int vfio_pci_core_ioread##size(struct vfio_pci_core_device *vdev, \ + bool test_mem, u##size *val, void __iomem *io); + +VFIO_IOREAD_DECLATION(8) +VFIO_IOREAD_DECLATION(16) +VFIO_IOREAD_DECLATION(32) + #endif /* VFIO_PCI_CORE_H */ |