drm/msm: convert iova to 64b

For a5xx the gpu is 64b so we need to change iova to 64b everywhere.  On
the display side, iova is still 32b so it can ignore the upper bits.
(Although all the armv8 devices have an iommu that can map 64b pa to 32b
iova.)

Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c

@@ -373,7 +373,7 @@ static void update_cursor(struct drm_crtc *crtc)
 	if (mdp4_crtc->cursor.stale) {
 		struct drm_gem_object *next_bo = mdp4_crtc->cursor.next_bo;
 		struct drm_gem_object *prev_bo = mdp4_crtc->cursor.scanout_bo;
-		uint32_t iova = mdp4_crtc->cursor.next_iova;
+		uint64_t iova = mdp4_crtc->cursor.next_iova;
 
 		if (next_bo) {
 			/* take a obj ref + iova ref when we start scanning out: */
@@ -418,7 +418,7 @@ static int mdp4_crtc_cursor_set(struct drm_crtc *crtc,
 	struct drm_device *dev = crtc->dev;
 	struct drm_gem_object *cursor_bo, *old_bo;
 	unsigned long flags;
-	uint32_t iova;
+	uint64_t iova;
 	int ret;
 
 	if ((width > CURSOR_WIDTH) || (height > CURSOR_HEIGHT)) {

drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h

@@ -51,7 +51,7 @@ struct mdp4_kms {
 
 	/* empty/blank cursor bo to use when cursor is "disabled" */
 	struct drm_gem_object *blank_cursor_bo;
-	uint32_t blank_cursor_iova;
+	uint64_t blank_cursor_iova;
 };
 #define to_mdp4_kms(x) container_of(x, struct mdp4_kms, base)