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vfio/fsl: Provide a get_region_info op

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Move it out of vfio_fsl_mc_ioctl() and re-indent it.

Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Pranjal Shrivastava <praan@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/10-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
This commit is contained in:
Jason Gunthorpe
2025-11-07 13:41:26 -04:00
committed by Alex Williamson
parent d4635df279
commit 6cdae5d0c3
1 changed files with 32 additions and 24 deletions
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56
drivers/vfio/fsl-mc/vfio_fsl_mc.c
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@@ -117,6 +117,37 @@ static void vfio_fsl_mc_close_device(struct vfio_device *core_vdev)
fsl_mc_cleanup_irq_pool(mc_cont);
}
static int
vfio_fsl_mc_ioctl_get_region_info(struct vfio_device *core_vdev,
struct vfio_region_info __user *arg)
{
struct vfio_fsl_mc_device *vdev =
container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
struct fsl_mc_device *mc_dev = vdev->mc_dev;
struct vfio_region_info info;
unsigned long minsz;
minsz = offsetofend(struct vfio_region_info, offset);
if (copy_from_user(&info, arg, minsz))
return -EFAULT;
if (info.argsz < minsz)
return -EINVAL;
if (info.index >= mc_dev->obj_desc.region_count)
return -EINVAL;
/* map offset to the physical address */
info.offset = VFIO_FSL_MC_INDEX_TO_OFFSET(info.index);
info.size = vdev->regions[info.index].size;
info.flags = vdev->regions[info.index].flags;
if (copy_to_user(arg, &info, minsz))
return -EFAULT;
return 0;
}
static long vfio_fsl_mc_ioctl(struct vfio_device *core_vdev,
unsigned int cmd, unsigned long arg)
{
@@ -149,30 +180,6 @@ static long vfio_fsl_mc_ioctl(struct vfio_device *core_vdev,
return copy_to_user((void __user *)arg, &info, minsz) ?
-EFAULT : 0;
}
case VFIO_DEVICE_GET_REGION_INFO:
{
struct vfio_region_info info;
minsz = offsetofend(struct vfio_region_info, offset);
if (copy_from_user(&info, (void __user *)arg, minsz))
return -EFAULT;
if (info.argsz < minsz)
return -EINVAL;
if (info.index >= mc_dev->obj_desc.region_count)
return -EINVAL;
/* map offset to the physical address */
info.offset = VFIO_FSL_MC_INDEX_TO_OFFSET(info.index);
info.size = vdev->regions[info.index].size;
info.flags = vdev->regions[info.index].flags;
if (copy_to_user((void __user *)arg, &info, minsz))
return -EFAULT;
return 0;
}
case VFIO_DEVICE_GET_IRQ_INFO:
{
struct vfio_irq_info info;
@@ -589,6 +596,7 @@ static const struct vfio_device_ops vfio_fsl_mc_ops = {
.open_device = vfio_fsl_mc_open_device,
.close_device = vfio_fsl_mc_close_device,
.ioctl = vfio_fsl_mc_ioctl,
.get_region_info = vfio_fsl_mc_ioctl_get_region_info,
.read = vfio_fsl_mc_read,
.write = vfio_fsl_mc_write,
.mmap = vfio_fsl_mc_mmap,