diff options
| author | Antonios Motakis <a.motakis@virtualopensystems.com> | 2015-03-16 20:08:46 (GMT) |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2015-03-16 20:08:46 (GMT) |
| commit | e8909e67cac3ad3868dc86cc6b1445f39c71bf63 (patch) | |
| tree | 41dc63c1092d66dc8c2e4581d2783bd5f61769b1 /drivers/vfio/platform/vfio_platform_private.h | |
| parent | 2e8567bbb536cfc7336f8f105ef43adc98b9c156 (diff) | |
| download | linux-e8909e67cac3ad3868dc86cc6b1445f39c71bf63.tar.xz | |
vfio/platform: return info for device memory mapped IO regions
This patch enables the IOCTLs VFIO_DEVICE_GET_REGION_INFO ioctl call,
which allows the user to learn about the available MMIO resources of
a device.
Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Baptiste Reynal <b.reynal@virtualopensystems.com>
Reviewed-by: Eric Auger <eric.auger@linaro.org>
Tested-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/platform/vfio_platform_private.h')
| -rw-r--r-- | drivers/vfio/platform/vfio_platform_private.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h index c046988..3551f6d 100644 --- a/drivers/vfio/platform/vfio_platform_private.h +++ b/drivers/vfio/platform/vfio_platform_private.h @@ -18,7 +18,29 @@ #include <linux/types.h> #include <linux/interrupt.h> +#define VFIO_PLATFORM_OFFSET_SHIFT 40 +#define VFIO_PLATFORM_OFFSET_MASK (((u64)(1) << VFIO_PLATFORM_OFFSET_SHIFT) - 1) + +#define VFIO_PLATFORM_OFFSET_TO_INDEX(off) \ + (off >> VFIO_PLATFORM_OFFSET_SHIFT) + +#define VFIO_PLATFORM_INDEX_TO_OFFSET(index) \ + ((u64)(index) << VFIO_PLATFORM_OFFSET_SHIFT) + +struct vfio_platform_region { + u64 addr; + resource_size_t size; + u32 flags; + u32 type; +#define VFIO_PLATFORM_REGION_TYPE_MMIO 1 +#define VFIO_PLATFORM_REGION_TYPE_PIO 2 +}; + struct vfio_platform_device { + struct vfio_platform_region *regions; + u32 num_regions; + int refcnt; + /* * These fields should be filled by the bus specific binder */ |