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