[RFC,libdrm] add support for framebuffer processor (fbproc) objects

diff --git a/include/drm/drm.h b/include/drm/drm.h
index b4ebaa9..15691fd 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -794,6 +794,9 @@  struct drm_prime_handle {
 #define DRM_IOCTL_MODE_ATOMIC		DRM_IOWR(0xBC, struct drm_mode_atomic)
 #define DRM_IOCTL_MODE_CREATEPROPBLOB	DRM_IOWR(0xBD, struct drm_mode_create_blob)
 #define DRM_IOCTL_MODE_DESTROYPROPBLOB	DRM_IOWR(0xBE, struct drm_mode_destroy_blob)
+#define DRM_IOCTL_MODE_GETFBPROCRESOURCES DRM_IOWR(0xBF, struct drm_mode_get_fbproc_res)
+#define DRM_IOCTL_MODE_GETFBPROC	DRM_IOWR(0xC0, struct drm_mode_get_fbproc)
+#define DRM_IOCTL_MODE_FBPROC		DRM_IOWR(0xC1, struct drm_mode_fbproc)
 
 /**
  * Device specific ioctls should only be in their respective headers
@@ -825,6 +828,7 @@  struct drm_event {
 
 #define DRM_EVENT_VBLANK 0x01
 #define DRM_EVENT_FLIP_COMPLETE 0x02
+#define DRM_EVENT_FBPROC_COMPLETE 0x03
 
 struct drm_event_vblank {
 	struct drm_event base;
@@ -835,6 +839,15 @@  struct drm_event_vblank {
 	__u32 reserved;
 };
 
+struct drm_event_fbproc {
+	struct drm_event base;
+	__u64 user_data;
+	__u32 tv_sec;
+	__u32 tv_usec;
+	__u32 sequence;
+	__u32 reserved;
+};
+
 /* typedef area */
 typedef struct drm_clip_rect drm_clip_rect_t;
 typedef struct drm_drawable_info drm_drawable_info_t;
diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index 7a7856e..03dbd04 100644
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -320,6 +320,21 @@  struct drm_mode_connector_set_property {
 	__u32 connector_id;
 };
 
+struct drm_mode_get_fbproc_res {
+	__u64 fbproc_id_ptr;
+	__u32 count_fbprocs;
+};
+
+struct drm_mode_get_fbproc {
+	__u32 fbproc_id;
+	__u32 capabilities;
+
+	__u32 src_format_count;
+	__u32 dst_format_count;
+	__u64 src_format_type_ptr;
+	__u64 dst_format_type_ptr;
+};
+
 #define DRM_MODE_OBJECT_CRTC 0xcccccccc
 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
@@ -328,6 +343,7 @@  struct drm_mode_connector_set_property {
 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
+#define DRM_MODE_OBJECT_FBPROC 0x88888888
 #define DRM_MODE_OBJECT_ANY 0
 
 struct drm_mode_obj_get_properties {
@@ -621,4 +637,27 @@  struct drm_mode_destroy_blob {
 	__u32 blob_id;
 };
 
+#define DRM_FBPROC_CAP_CROP		  0x01
+#define DRM_FBPROC_CAP_ROTATE		  0x02
+#define DRM_FBPROC_CAP_SCALE		  0x04
+#define DRM_FBPROC_CAP_CONVERT		  0x08
+#define DRM_FBPROC_CAP_FB_MODIFIERS	0x1000
+
+#define DRM_MODE_FBPROC_EVENT		0x01
+#define DRM_MODE_FBPROC_TEST_ONLY	0x02
+#define DRM_MODE_FBPROC_NONBLOCK	0x04
+
+#define DRM_MODE_FBPROC_FLAGS (DRM_MODE_FBPROC_EVENT |\
+		DRM_MODE_FBPROC_TEST_ONLY | DRM_MODE_FBPROC_NONBLOCK)
+
+struct drm_mode_fbproc {
+	__u32 fbproc_id;
+	__u32 flags;
+	__u32 count_props;
+	__u64 props_ptr;
+	__u64 prop_values_ptr;
+	__u64 reserved;
+	__u64 user_data;
+};
+
 #endif
diff --git a/xf86drmMode.c b/xf86drmMode.c
index f7b5948..65db2b6 100644
--- a/xf86drmMode.c
+++ b/xf86drmMode.c
@@ -1075,6 +1075,137 @@  void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
 	drmFree(ptr);
 }
 
+drmModeFBProcResPtr drmModeGetFBProcResources(int fd)
+{
+	struct drm_mode_get_fbproc_res res, counts;
+	drmModeFBProcResPtr r = 0;
+
+retry:
+	memclear(res);
+	if (drmIoctl(fd, DRM_IOCTL_MODE_GETFBPROCRESOURCES, &res))
+		return 0;
+
+	counts = res;
+
+	if (res.count_fbprocs) {
+		res.fbproc_id_ptr = VOID2U64(drmMalloc(res.count_fbprocs *
+							sizeof(uint32_t)));
+		if (!res.fbproc_id_ptr)
+			goto err_allocs;
+	}
+
+	if (drmIoctl(fd, DRM_IOCTL_MODE_GETFBPROCRESOURCES, &res))
+		goto err_allocs;
+
+	if (counts.count_fbprocs < res.count_fbprocs) {
+		drmFree(U642VOID(res.fbproc_id_ptr));
+		goto retry;
+	}
+
+	if (!(r = drmMalloc(sizeof(*r))))
+		goto err_allocs;
+
+	r->count_fbprocs = res.count_fbprocs;
+	r->fbprocs = drmAllocCpy(U642VOID(res.fbproc_id_ptr),
+				  res.count_fbprocs, sizeof(uint32_t));
+	if (res.count_fbprocs && !r->fbprocs) {
+		drmFree(r->fbprocs);
+		drmFree(r);
+		r = 0;
+	}
+
+err_allocs:
+	drmFree(U642VOID(res.fbproc_id_ptr));
+
+	return r;
+}
+
+void drmModeFreeFBProcResources(drmModeFBProcResPtr ptr)
+{
+	if (!ptr)
+		return;
+
+	drmFree(ptr->fbprocs);
+	drmFree(ptr);
+}
+
+drmModeFBProcPtr drmModeGetFBProc(int fd, uint32_t fbproc_id)
+{
+	struct drm_mode_get_fbproc ovr, counts;
+	drmModeFBProcPtr r = 0;
+
+retry:
+	memclear(ovr);
+	ovr.fbproc_id = fbproc_id;
+	if (drmIoctl(fd, DRM_IOCTL_MODE_GETFBPROC, &ovr))
+		return 0;
+
+	counts = ovr;
+
+	if (ovr.src_format_count) {
+		ovr.src_format_type_ptr = VOID2U64(
+			drmMalloc(ovr.src_format_count * sizeof(uint32_t)));
+		if (!ovr.src_format_type_ptr)
+			goto err_allocs;
+	}
+
+	if (ovr.dst_format_count) {
+		ovr.dst_format_type_ptr = VOID2U64(
+			drmMalloc(ovr.dst_format_count * sizeof(uint32_t)));
+		if (!ovr.dst_format_type_ptr)
+			goto err_allocs;
+	}
+
+	if (drmIoctl(fd, DRM_IOCTL_MODE_GETFBPROC, &ovr))
+		goto err_allocs;
+
+	if (counts.src_format_count < ovr.src_format_count) {
+		drmFree(U642VOID(ovr.src_format_type_ptr));
+		drmFree(U642VOID(ovr.dst_format_type_ptr));
+		goto retry;
+	}
+
+	if (counts.dst_format_count < ovr.dst_format_count) {
+		drmFree(U642VOID(ovr.src_format_type_ptr));
+		drmFree(U642VOID(ovr.dst_format_type_ptr));
+		goto retry;
+	}
+
+	if (!(r = drmMalloc(sizeof(*r))))
+		goto err_allocs;
+
+	r->fbproc_id = ovr.fbproc_id;
+	r->capabilities = ovr.capabilities;
+	r->src_format_count = ovr.src_format_count;
+	r->dst_format_count = ovr.dst_format_count;
+	r->src_formats = drmAllocCpy(U642VOID(ovr.src_format_type_ptr),
+				 ovr.src_format_count, sizeof(uint32_t));
+	r->dst_formats = drmAllocCpy(U642VOID(ovr.dst_format_type_ptr),
+				 ovr.dst_format_count, sizeof(uint32_t));
+	if (!r->src_formats || !r->dst_formats) {
+		drmFree(r->src_formats);
+		drmFree(r->dst_formats);
+		drmFree(r);
+		r = 0;
+	}
+
+err_allocs:
+	drmFree(U642VOID(ovr.src_format_type_ptr));
+	drmFree(U642VOID(ovr.dst_format_type_ptr));
+
+	return r;
+}
+
+void drmModeFreeFBProc(drmModeFBProcPtr ptr)
+{
+	if (!ptr)
+		return;
+
+	drmFree(ptr->src_formats);
+	drmFree(ptr->dst_formats);
+	drmFree(ptr);
+}
+
 drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd,
 						      uint32_t object_id,
 						      uint32_t object_type)
@@ -1448,3 +1579,217 @@  drmModeDestroyPropertyBlob(int fd, uint32_t id)
 	destroy.blob_id = id;
 	return DRM_IOCTL(fd, DRM_IOCTL_MODE_DESTROYPROPBLOB, &destroy);
 }
+
+typedef struct _drmModeFBProcReqItem drmModeFBProcReqItem, *drmModeFBProcReqItemPtr;
+
+struct _drmModeFBProcReqItem {
+	uint32_t property_id;
+	uint64_t value;
+};
+
+struct _drmModeFBProcReq {
+	uint32_t cursor;
+	uint32_t size_items;
+	drmModeFBProcReqItemPtr items;
+};
+
+drmModeFBProcReqPtr drmModeFBProcReqAlloc(void)
+{
+	drmModeFBProcReqPtr req;
+
+	req = drmMalloc(sizeof *req);
+	if (!req)
+		return NULL;
+
+	req->items = NULL;
+	req->cursor = 0;
+	req->size_items = 0;
+
+	return req;
+}
+
+drmModeFBProcReqPtr drmModeFBProcReqDuplicate(drmModeFBProcReqPtr old)
+{
+	drmModeFBProcReqPtr new;
+
+	if (!old)
+		return NULL;
+
+	new = drmMalloc(sizeof *new);
+	if (!new)
+		return NULL;
+
+	new->cursor = old->cursor;
+	new->size_items = old->size_items;
+
+	if (old->size_items) {
+		new->items = drmMalloc(old->size_items * sizeof(*new->items));
+		if (!new->items) {
+			free(new);
+			return NULL;
+		}
+		memcpy(new->items, old->items,
+		       old->size_items * sizeof(*new->items));
+	} else {
+		new->items = NULL;
+	}
+
+	return new;
+}
+
+int drmModeFBProcReqMerge(drmModeFBProcReqPtr base, drmModeFBProcReqPtr augment)
+{
+	if (!base)
+		return -EINVAL;
+
+	if (!augment || augment->cursor == 0)
+		return 0;
+
+	if (base->cursor + augment->cursor >= base->size_items) {
+		drmModeFBProcReqItemPtr new;
+		int saved_size = base->size_items;
+
+		base->size_items = base->cursor + augment->cursor;
+		new = realloc(base->items,
+			      base->size_items * sizeof(*base->items));
+		if (!new) {
+			base->size_items = saved_size;
+			return -ENOMEM;
+		}
+		base->items = new;
+	}
+
+	memcpy(&base->items[base->cursor], augment->items,
+	       augment->cursor * sizeof(*augment->items));
+	base->cursor += augment->cursor;
+
+	return 0;
+}
+
+int drmModeFBProcReqGetCursor(drmModeFBProcReqPtr req)
+{
+	if (!req)
+		return -EINVAL;
+	return req->cursor;
+}
+
+void drmModeFBProcReqSetCursor(drmModeFBProcReqPtr req, int cursor)
+{
+	if (req)
+		req->cursor = cursor;
+}
+
+int drmModeFBProcReqAddProperty(drmModeFBProcReqPtr req,
+			     uint32_t property_id,
+			     uint64_t value)
+{
+	if (!req)
+		return -EINVAL;
+
+	if (req->cursor >= req->size_items) {
+		drmModeFBProcReqItemPtr new;
+
+		req->size_items += 16;
+		new = realloc(req->items, req->size_items * sizeof(*req->items));
+		if (!new) {
+			req->size_items -= 16;
+			return -ENOMEM;
+		}
+		req->items = new;
+	}
+
+	req->items[req->cursor].property_id = property_id;
+	req->items[req->cursor].value = value;
+	req->cursor++;
+
+	return req->cursor;
+}
+
+void drmModeFBProcReqFree(drmModeFBProcReqPtr req)
+{
+	if (!req)
+		return;
+
+	if (req->items)
+		drmFree(req->items);
+	drmFree(req);
+}
+
+static int sort_prop_list(const void *misc, const void *other)
+{
+	const drmModeFBProcReqItem *first = misc;
+	const drmModeFBProcReqItem *second = other;
+
+	return second->property_id - first->property_id;
+}
+
+int drmModeFBProcReqCommit(int fd, uint32_t fbproc_id, drmModeFBProcReqPtr req,
+			uint32_t flags,	void *user_data)
+{
+	drmModeFBProcReqPtr sorted;
+	struct drm_mode_fbproc fbproc;
+	uint32_t *props_ptr = NULL;
+	uint64_t *prop_values_ptr = NULL;
+	uint32_t i;
+	int ret = -1;
+
+	if (!req)
+		return -EINVAL;
+
+	if (req->cursor == 0)
+		return 0;
+
+	sorted = drmModeFBProcReqDuplicate(req);
+	if (sorted == NULL)
+		return -ENOMEM;
+
+	memclear(fbproc);
+
+	/* Sort the list by property ID. */
+	qsort(sorted->items, sorted->cursor, sizeof(*sorted->items),
+	      sort_prop_list);
+
+	/* Now the list is sorted, eliminate duplicate property sets. */
+	for (i = 0; i < sorted->cursor - 1; i++) {
+		if (sorted->items[i].property_id != sorted->items[i + 1].property_id)
+			continue;
+
+		memmove(&sorted->items[i], &sorted->items[i + 1],
+			(sorted->cursor - i - 1) * sizeof(*sorted->items));
+		sorted->cursor--;
+	}
+
+	props_ptr = drmMalloc(sorted->cursor * sizeof props_ptr[0]);
+	if (!props_ptr) {
+		errno = ENOMEM;
+		goto out;
+	}
+
+	prop_values_ptr = drmMalloc(sorted->cursor * sizeof prop_values_ptr[0]);
+	if (!prop_values_ptr) {
+		errno = ENOMEM;
+		goto out;
+	}
+
+	for (i = 0; i < sorted->cursor; i++) {
+		props_ptr[i] = sorted->items[i].property_id;
+		prop_values_ptr[i] = sorted->items[i].value;
+
+	}
+
+	fbproc.flags = flags;
+	fbproc.fbproc_id = fbproc_id;
+	fbproc.count_props = sorted->cursor;
+	fbproc.props_ptr = VOID2U64(props_ptr);
+	fbproc.prop_values_ptr = VOID2U64(prop_values_ptr);
+	fbproc.user_data = VOID2U64(user_data);
+
+	ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_FBPROC, &fbproc);
+
+out:
+	drmFree(props_ptr);
+	drmFree(prop_values_ptr);
+	drmModeFBProcReqFree(sorted);
+
+	return ret;
+}
diff --git a/xf86drmMode.h b/xf86drmMode.h
index 4de7bbb..8faaf73 100644
--- a/xf86drmMode.h
+++ b/xf86drmMode.h
@@ -335,6 +335,20 @@  typedef struct _drmModePlaneRes {
 	uint32_t *planes;
 } drmModePlaneRes, *drmModePlaneResPtr;
 
+typedef struct _drmModeFBProcRes {
+	uint32_t count_fbprocs;
+	uint32_t *fbprocs;
+} drmModeFBProcRes, *drmModeFBProcResPtr;
+
+typedef struct _drmModeFBProc {
+	uint32_t fbproc_id;
+	uint32_t capabilities;
+	uint32_t src_format_count;
+	uint32_t dst_format_count;
+	uint32_t *src_formats;
+	uint32_t *dst_formats;
+} drmModeFBProc, *drmModeFBProcPtr;
+
 extern void drmModeFreeModeInfo( drmModeModeInfoPtr ptr );
 extern void drmModeFreeResources( drmModeResPtr ptr );
 extern void drmModeFreeFB( drmModeFBPtr ptr );
@@ -343,6 +357,8 @@  extern void drmModeFreeConnector( drmModeConnectorPtr ptr );
 extern void drmModeFreeEncoder( drmModeEncoderPtr ptr );
 extern void drmModeFreePlane( drmModePlanePtr ptr );
 extern void drmModeFreePlaneResources(drmModePlaneResPtr ptr);
+extern void drmModeFreeFBProcResources(drmModeFBProcResPtr ptr);
+extern void drmModeFreeFBProc(drmModeFBProcPtr ptr);
 
 /**
  * Retrives all of the resources associated with a card.
@@ -483,6 +499,9 @@  extern void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr);
 extern int drmModeObjectSetProperty(int fd, uint32_t object_id,
 				    uint32_t object_type, uint32_t property_id,
 				    uint64_t value);
+extern drmModeFBProcPtr drmModeGetFBProc(int fd, uint32_t fbproc_id);
+extern drmModeFBProcResPtr drmModeGetFBProcResources(int fd);
+
 
 
 typedef struct _drmModeAtomicReq drmModeAtomicReq, *drmModeAtomicReqPtr;
@@ -507,6 +526,24 @@  extern int drmModeCreatePropertyBlob(int fd, const void *data, size_t size,
 				     uint32_t *id);
 extern int drmModeDestroyPropertyBlob(int fd, uint32_t id);
 
+typedef struct _drmModeFBProcReq drmModeFBProcReq, *drmModeFBProcReqPtr;
+
+extern drmModeFBProcReqPtr drmModeFBProcReqAlloc(void);
+extern drmModeFBProcReqPtr drmModeFBProcReqDuplicate(drmModeFBProcReqPtr req);
+extern int drmModeFBProcReqMerge(drmModeFBProcReqPtr base,
+			      drmModeFBProcReqPtr augment);
+extern void drmModeFBProcReqFree(drmModeFBProcReqPtr req);
+extern int drmModeFBProcReqGetCursor(drmModeFBProcReqPtr req);
+extern void drmModeFBProcReqSetCursor(drmModeFBProcReqPtr req, int cursor);
+extern int drmModeFBProcReqAddProperty(drmModeFBProcReqPtr req,
+				    uint32_t property_id,
+				    uint64_t value);
+extern int drmModeFBProcReqCommit(int fd,
+			       uint32_t fbproc_id,
+			       drmModeFBProcReqPtr req,
+			       uint32_t flags,
+			       void *user_data);
+
 
 #if defined(__cplusplus)
 }