From df747bcd5b216dae7be26945fab2558ed2f7f363 Mon Sep 17 00:00:00 2001 From: Diana Craciun Date: Mon, 5 Oct 2020 20:36:48 +0300 Subject: vfio/fsl-mc: Implement VFIO_DEVICE_GET_REGION_INFO ioctl call Expose to userspace information about the memory regions. Signed-off-by: Bharat Bhushan Signed-off-by: Diana Craciun Reviewed-by: Eric Auger Signed-off-by: Alex Williamson --- drivers/vfio/fsl-mc/vfio_fsl_mc_private.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'drivers/vfio/fsl-mc/vfio_fsl_mc_private.h') diff --git a/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h b/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h index 37d61eaa58c8..be60f41af30f 100644 --- a/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h +++ b/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h @@ -7,9 +7,27 @@ #ifndef VFIO_FSL_MC_PRIVATE_H #define VFIO_FSL_MC_PRIVATE_H +#define VFIO_FSL_MC_OFFSET_SHIFT 40 +#define VFIO_FSL_MC_OFFSET_MASK (((u64)(1) << VFIO_FSL_MC_OFFSET_SHIFT) - 1) + +#define VFIO_FSL_MC_OFFSET_TO_INDEX(off) ((off) >> VFIO_FSL_MC_OFFSET_SHIFT) + +#define VFIO_FSL_MC_INDEX_TO_OFFSET(index) \ + ((u64)(index) << VFIO_FSL_MC_OFFSET_SHIFT) + +struct vfio_fsl_mc_region { + u32 flags; + u32 type; + u64 addr; + resource_size_t size; +}; + struct vfio_fsl_mc_device { struct fsl_mc_device *mc_dev; struct notifier_block nb; + int refcnt; + struct vfio_fsl_mc_region *regions; + struct mutex driver_lock; }; #endif /* VFIO_FSL_MC_PRIVATE_H */ -- cgit v1.2.3