Expose vfio_pci_core_setup_barmap() to be used by drivers.
This will let drivers to mmap a BAR and re-use it from both vfio and the
driver when it's applicable.
This API will be used in the next patches by the vfio/virtio coming
driver.
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxx>
---
drivers/vfio/pci/vfio_pci_rdwr.c | 7 ++++---
include/linux/vfio_pci_core.h | 1 +
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c
index e27de61ac9fe..a9887fd6de46 100644
--- a/drivers/vfio/pci/vfio_pci_rdwr.c
+++ b/drivers/vfio/pci/vfio_pci_rdwr.c
@@ -200,7 +200,7 @@ static ssize_t do_io_rw(struct vfio_pci_core_device *vdev, bool test_mem,
return done;
}
-static int vfio_pci_setup_barmap(struct vfio_pci_core_device *vdev, int bar)
+int vfio_pci_core_setup_barmap(struct vfio_pci_core_device *vdev, int bar)
{
struct pci_dev *pdev = vdev->pdev;
int ret;
@@ -223,6 +223,7 @@ static int vfio_pci_setup_barmap(struct vfio_pci_core_device *vdev, int bar)
return 0;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_setup_barmap);
ssize_t vfio_pci_bar_rw(struct vfio_pci_core_device *vdev, char __user *buf,
size_t count, loff_t *ppos, bool iswrite)
@@ -262,7 +263,7 @@ ssize_t vfio_pci_bar_rw(struct vfio_pci_core_device *vdev, char __user *buf,
}
x_end = end;
} else {
- int ret = vfio_pci_setup_barmap(vdev, bar);
+ int ret = vfio_pci_core_setup_barmap(vdev, bar);
if (ret) {
done = ret;
goto out;
@@ -438,7 +439,7 @@ int vfio_pci_ioeventfd(struct vfio_pci_core_device *vdev, loff_t offset,
return -EINVAL;
#endif
- ret = vfio_pci_setup_barmap(vdev, bar);
+ ret = vfio_pci_core_setup_barmap(vdev, bar);
if (ret)
return ret;
diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h
index 562e8754869d..67ac58e20e1d 100644
--- a/include/linux/vfio_pci_core.h
+++ b/include/linux/vfio_pci_core.h
@@ -127,6 +127,7 @@ int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf);
int vfio_pci_core_enable(struct vfio_pci_core_device *vdev);
void vfio_pci_core_disable(struct vfio_pci_core_device *vdev);
void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev);
+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);
--
2.27.0
