提交 9f35421e 编写于 作者: B Ben Skeggs 提交者: Dave Airlie

drm/core: add ioctl to query device/driver capabilities

We're coming to see a need to have a set of generic capability checks in
the core DRM, in addition to the driver-specific ioctls that already
exist.

This patch defines an ioctl to do as such, but does not yet define any
capabilities.

[airlied: drop the driver callback for now.]
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
上级 e1e84017
......@@ -67,6 +67,7 @@ static struct drm_ioctl_desc drm_ioctls[] = {
DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, 0),
DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER),
DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
......
......@@ -267,6 +267,17 @@ int drm_getstats(struct drm_device *dev, void *data,
return 0;
}
/**
* Get device/driver capabilities
*/
int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
struct drm_get_cap *req = data;
req->value = 0;
return 0;
}
/**
* Setversion ioctl.
*
......
......@@ -608,6 +608,12 @@ struct drm_gem_open {
__u64 size;
};
/** DRM_IOCTL_GET_CAP ioctl argument type */
struct drm_get_cap {
__u64 capability;
__u64 value;
};
#include "drm_mode.h"
#define DRM_IOCTL_BASE 'd'
......@@ -628,6 +634,7 @@ struct drm_gem_open {
#define DRM_IOCTL_GEM_CLOSE DRM_IOW (0x09, struct drm_gem_close)
#define DRM_IOCTL_GEM_FLINK DRM_IOWR(0x0a, struct drm_gem_flink)
#define DRM_IOCTL_GEM_OPEN DRM_IOWR(0x0b, struct drm_gem_open)
#define DRM_IOCTL_GET_CAP DRM_IOWR(0x0c, struct drm_get_cap)
#define DRM_IOCTL_SET_UNIQUE DRM_IOW( 0x10, struct drm_unique)
#define DRM_IOCTL_AUTH_MAGIC DRM_IOW( 0x11, struct drm_auth)
......
......@@ -1276,6 +1276,8 @@ extern int drm_getclient(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int drm_getstats(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int drm_getcap(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int drm_setversion(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int drm_noop(struct drm_device *dev, void *data,
......
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