drm/i915/intel_fb: Pull FB plane functions from intel_display.c

Move the FB plane specific functions from intel_display.c to intel_fb.c.
There's more functions like this, but I leave moving those as well for a
follow up, and for now moving only the ones needed by the end of this
patchset (adding support for padding tile-rows in an FB GGTT view).

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210325214808.2071517-11-imre.deak@intel.com

6 files changed, 840 insertions, 831 deletions

diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.c b/drivers/gpu/drm/i915/display/i9xx_plane.c
index 6919ede20b19..40266b78247b 100644
--- a/drivers/gpu/drm/i915/display/i9xx_plane.c
+++ b/drivers/gpu/drm/i915/display/i9xx_plane.c
@@ -11,6 +11,7 @@
 #include "intel_atomic.h"
 #include "intel_atomic_plane.h"
 #include "intel_display_types.h"
+#include "intel_fb.h"
 #include "intel_sprite.h"
 #include "i9xx_plane.h"
 
diff --git a/drivers/gpu/drm/i915/display/intel_cursor.c b/drivers/gpu/drm/i915/display/intel_cursor.c
index 0132ed3cb09d..84099b7f5c35 100644
--- a/drivers/gpu/drm/i915/display/intel_cursor.c
+++ b/drivers/gpu/drm/i915/display/intel_cursor.c
@@ -15,6 +15,7 @@
 #include "intel_cursor.h"
 #include "intel_display_types.h"
 #include "intel_display.h"
+#include "intel_fb.h"
 
 #include "intel_frontbuffer.h"
 #include "intel_pm.h"
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 203ff299072d..b4607e6593f5 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -856,19 +856,6 @@ void intel_disable_pipe(const struct intel_crtc_state *old_crtc_state)
 		intel_wait_for_pipe_off(old_crtc_state);
 }
 
-static unsigned int intel_tile_size(const struct drm_i915_private *dev_priv)
-{
-	return IS_DISPLAY_VER(dev_priv, 2) ? 2048 : 4096;
-}
-
-static bool is_aux_plane(const struct drm_framebuffer *fb, int plane)
-{
-	if (is_ccs_modifier(fb->modifier))
-		return is_ccs_plane(fb, plane);
-
-	return plane == 1;
-}
-
 bool
 intel_format_info_is_yuv_semiplanar(const struct drm_format_info *info,
 				    u64 modifier)
@@ -877,13 +864,6 @@ intel_format_info_is_yuv_semiplanar(const struct drm_format_info *info,
 	       info->num_planes == (is_ccs_modifier(modifier) ? 4 : 2);
 }
 
-static bool is_semiplanar_uv_plane(const struct drm_framebuffer *fb,
-				   int color_plane)
-{
-	return intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier) &&
-	       color_plane == 1;
-}
-
 unsigned int
 intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
 {
@@ -939,38 +919,6 @@ intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
 }
 
 unsigned int
-intel_tile_height(const struct drm_framebuffer *fb, int color_plane)
-{
-	if (is_gen12_ccs_plane(fb, color_plane))
-		return 1;
-
-	return intel_tile_size(to_i915(fb->dev)) /
-		intel_tile_width_bytes(fb, color_plane);
-}
-
-/* Return the tile dimensions in pixel units */
-static void intel_tile_dims(const struct drm_framebuffer *fb, int color_plane,
-			    unsigned int *tile_width,
-			    unsigned int *tile_height)
-{
-	unsigned int tile_width_bytes = intel_tile_width_bytes(fb, color_plane);
-	unsigned int cpp = fb->format->cpp[color_plane];
-
-	*tile_width = tile_width_bytes / cpp;
-	*tile_height = intel_tile_height(fb, color_plane);
-}
-
-static unsigned int intel_tile_row_size(const struct drm_framebuffer *fb,
-					int color_plane)
-{
-	unsigned int tile_width, tile_height;
-
-	intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
-
-	return fb->pitches[color_plane] * tile_height;
-}
-
-unsigned int
 intel_fb_align_height(const struct drm_framebuffer *fb,
 		      int color_plane, unsigned int height)
 {
@@ -1001,32 +949,6 @@ unsigned int intel_remapped_info_size(const struct intel_remapped_info *rem_info
 	return size;
 }
 
-static void
-intel_fill_fb_ggtt_view(struct i915_ggtt_view *view,
-			const struct drm_framebuffer *fb,
-			unsigned int rotation)
-{
-	memset(view, 0, sizeof(*view));
-
-	view->type = I915_GGTT_VIEW_NORMAL;
-	if (drm_rotation_90_or_270(rotation)) {
-		view->type = I915_GGTT_VIEW_ROTATED;
-		view->rotated = to_intel_framebuffer(fb)->rot_info;
-	}
-}
-
-static unsigned int intel_cursor_alignment(const struct drm_i915_private *dev_priv)
-{
-	if (IS_I830(dev_priv))
-		return 16 * 1024;
-	else if (IS_I85X(dev_priv))
-		return 256;
-	else if (IS_I845G(dev_priv) || IS_I865G(dev_priv))
-		return 32;
-	else
-		return 4 * 1024;
-}
-
 static unsigned int intel_linear_alignment(const struct drm_i915_private *dev_priv)
 {
 	if (DISPLAY_VER(dev_priv) >= 9)
@@ -1197,15 +1119,6 @@ void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags)
 	i915_vma_put(vma);
 }
 
-static int intel_fb_pitch(const struct drm_framebuffer *fb, int color_plane,
-			  unsigned int rotation)
-{
-	if (drm_rotation_90_or_270(rotation))
-		return to_intel_framebuffer(fb)->rotated[color_plane].pitch;
-	else
-		return fb->pitches[color_plane];
-}
-
 /*
  * Convert the x/y offsets into a linear offset.
  * Only valid with 0/180 degree rotation, which is fine since linear
@@ -1237,224 +1150,6 @@ void intel_add_fb_offsets(int *x, int *y,
 	*y += state->color_plane[color_plane].y;
 }
 
-static u32 intel_adjust_tile_offset(int *x, int *y,
-				    unsigned int tile_width,
-				    unsigned int tile_height,
-				    unsigned int tile_size,
-				    unsigned int pitch_tiles,
-				    u32 old_offset,
-				    u32 new_offset)
-{
-	unsigned int pitch_pixels = pitch_tiles * tile_width;
-	unsigned int tiles;
-
-	WARN_ON(old_offset & (tile_size - 1));
-	WARN_ON(new_offset & (tile_size - 1));
-	WARN_ON(new_offset > old_offset);
-
-	tiles = (old_offset - new_offset) / tile_size;
-
-	*y += tiles / pitch_tiles * tile_height;
-	*x += tiles % pitch_tiles * tile_width;
-
-	/* minimize x in case it got needlessly big */
-	*y += *x / pitch_pixels * tile_height;
-	*x %= pitch_pixels;
-
-	return new_offset;
-}
-
-static u32 intel_adjust_aligned_offset(int *x, int *y,
-				       const struct drm_framebuffer *fb,
-				       int color_plane,
-				       unsigned int rotation,
-				       unsigned int pitch,
-				       u32 old_offset, u32 new_offset)
-{
-	struct drm_i915_private *dev_priv = to_i915(fb->dev);
-	unsigned int cpp = fb->format->cpp[color_plane];
-
-	drm_WARN_ON(&dev_priv->drm, new_offset > old_offset);
-
-	if (!is_surface_linear(fb, color_plane)) {
-		unsigned int tile_size, tile_width, tile_height;
-		unsigned int pitch_tiles;
-
-		tile_size = intel_tile_size(dev_priv);
-		intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
-
-		if (drm_rotation_90_or_270(rotation)) {
-			pitch_tiles = pitch / tile_height;
-			swap(tile_width, tile_height);
-		} else {
-			pitch_tiles = pitch / (tile_width * cpp);
-		}
-
-		intel_adjust_tile_offset(x, y, tile_width, tile_height,
-					 tile_size, pitch_tiles,
-					 old_offset, new_offset);
-	} else {
-		old_offset += *y * pitch + *x * cpp;
-
-		*y = (old_offset - new_offset) / pitch;
-		*x = ((old_offset - new_offset) - *y * pitch) / cpp;
-	}
-
-	return new_offset;
-}
-
-/*
- * Adjust the tile offset by moving the difference into
- * the x/y offsets.
- */
-u32 intel_plane_adjust_aligned_offset(int *x, int *y,
-				      const struct intel_plane_state *state,
-				      int color_plane,
-				      u32 old_offset, u32 new_offset)
-{
-	return intel_adjust_aligned_offset(x, y, state->hw.fb, color_plane,
-					   state->hw.rotation,
-					   state->color_plane[color_plane].stride,
-					   old_offset, new_offset);
-}
-
-/*
- * Computes the aligned offset to the base tile and adjusts
- * x, y. bytes per pixel is assumed to be a power-of-two.
- *
- * In the 90/270 rotated case, x and y are assumed
- * to be already rotated to match the rotated GTT view, and
- * pitch is the tile_height aligned framebuffer height.
- *
- * This function is used when computing the derived information
- * under intel_framebuffer, so using any of that information
- * here is not allowed. Anything under drm_framebuffer can be
- * used. This is why the user has to pass in the pitch since it
- * is specified in the rotated orientation.
- */
-static u32 intel_compute_aligned_offset(struct drm_i915_private *dev_priv,
-					int *x, int *y,
-					const struct drm_framebuffer *fb,
-					int color_plane,
-					unsigned int pitch,
-					unsigned int rotation,
-					u32 alignment)
-{
-	unsigned int cpp = fb->format->cpp[color_plane];
-	u32 offset, offset_aligned;
-
-	if (!is_surface_linear(fb, color_plane)) {
-		unsigned int tile_size, tile_width, tile_height;
-		unsigned int tile_rows, tiles, pitch_tiles;
-
-		tile_size = intel_tile_size(dev_priv);
-		intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
-
-		if (drm_rotation_90_or_270(rotation)) {
-			pitch_tiles = pitch / tile_height;
-			swap(tile_width, tile_height);
-		} else {
-			pitch_tiles = pitch / (tile_width * cpp);
-		}
-
-		tile_rows = *y / tile_height;
-		*y %= tile_height;
-
-		tiles = *x / tile_width;
-		*x %= tile_width;
-
-		offset = (tile_rows * pitch_tiles + tiles) * tile_size;
-
-		offset_aligned = offset;
-		if (alignment)
-			offset_aligned = rounddown(offset_aligned, alignment);
-
-		intel_adjust_tile_offset(x, y, tile_width, tile_height,
-					 tile_size, pitch_tiles,
-					 offset, offset_aligned);
-	} else {
-		offset = *y * pitch + *x * cpp;
-		offset_aligned = offset;
-		if (alignment) {
-			offset_aligned = rounddown(offset_aligned, alignment);
-			*y = (offset % alignment) / pitch;
-			*x = ((offset % alignment) - *y * pitch) / cpp;
-		} else {
-			*y = *x = 0;
-		}
-	}
-
-	return offset_aligned;
-}
-
-u32 intel_plane_compute_aligned_offset(int *x, int *y,
-				       const struct intel_plane_state *state,
-				       int color_plane)
-{
-	struct intel_plane *intel_plane = to_intel_plane(state->uapi.plane);
-	struct drm_i915_private *dev_priv = to_i915(intel_plane->base.dev);
-	const struct drm_framebuffer *fb = state->hw.fb;
-	unsigned int rotation = state->hw.rotation;
-	int pitch = state->color_plane[color_plane].stride;
-	u32 alignment;
-
-	if (intel_plane->id == PLANE_CURSOR)
-		alignment = intel_cursor_alignment(dev_priv);
-	else
-		alignment = intel_surf_alignment(fb, color_plane);
-
-	return intel_compute_aligned_offset(dev_priv, x, y, fb, color_plane,
-					    pitch, rotation, alignment);
-}
-
-/* Convert the fb->offset[] into x/y offsets */
-static int intel_fb_offset_to_xy(int *x, int *y,
-				 const struct drm_framebuffer *fb,
-				 int color_plane)
-{
-	struct drm_i915_private *dev_priv = to_i915(fb->dev);
-	unsigned int height;
-	u32 alignment;
-
-	if (DISPLAY_VER(dev_priv) >= 12 &&
-	    is_semiplanar_uv_plane(fb, color_plane))
-		alignment = intel_tile_row_size(fb, color_plane);
-	else if (fb->modifier != DRM_FORMAT_MOD_LINEAR)
-		alignment = intel_tile_size(dev_priv);
-	else
-		alignment = 0;
-
-	if (alignment != 0 && fb->offsets[color_plane] % alignment) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "Misaligned offset 0x%08x for color plane %d\n",
-			    fb->offsets[color_plane], color_plane);
-		return -EINVAL;
-	}
-
-	height = drm_framebuffer_plane_height(fb->height, fb, color_plane);
-	height = ALIGN(height, intel_tile_height(fb, color_plane));
-
-	/* Catch potential overflows early */
-	if (add_overflows_t(u32, mul_u32_u32(height, fb->pitches[color_plane]),
-			    fb->offsets[color_plane])) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "Bad offset 0x%08x or pitch %d for color plane %d\n",
-			    fb->offsets[color_plane], fb->pitches[color_plane],
-			    color_plane);
-		return -ERANGE;
-	}
-
-	*x = 0;
-	*y = 0;
-
-	intel_adjust_aligned_offset(x, y,
-				    fb, color_plane, DRM_MODE_ROTATE_0,
-				    fb->pitches[color_plane],
-				    fb->offsets[color_plane], 0);
-
-	return 0;
-}
-
 static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier)
 {
 	switch (fb_modifier) {
@@ -1690,519 +1385,6 @@ intel_fb_stride_alignment(const struct drm_framebuffer *fb, int color_plane)
 	return tile_width;
 }
 
-bool intel_plane_can_remap(const struct intel_plane_state *plane_state)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
-	const struct drm_framebuffer *fb = plane_state->hw.fb;
-	int i;
-
-	/* We don't want to deal with remapping with cursors */
-	if (plane->id == PLANE_CURSOR)
-		return false;
-
-	/*
-	 * The display engine limits already match/exceed the
-	 * render engine limits, so not much point in remapping.
-	 * Would also need to deal with the fence POT alignment
-	 * and gen2 2KiB GTT tile size.
-	 */
-	if (DISPLAY_VER(dev_priv) < 4)
-		return false;
-
-	/*
-	 * The new CCS hash mode isn't compatible with remapping as
-	 * the virtual address of the pages affects the compressed data.
-	 */
-	if (is_ccs_modifier(fb->modifier))
-		return false;
-
-	/* Linear needs a page aligned stride for remapping */
-	if (fb->modifier == DRM_FORMAT_MOD_LINEAR) {
-		unsigned int alignment = intel_tile_size(dev_priv) - 1;
-
-		for (i = 0; i < fb->format->num_planes; i++) {
-			if (fb->pitches[i] & alignment)
-				return false;
-		}
-	}
-
-	return true;
-}
-
-static bool intel_plane_needs_remap(const struct intel_plane_state *plane_state)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-	const struct drm_framebuffer *fb = plane_state->hw.fb;
-	unsigned int rotation = plane_state->hw.rotation;
-	u32 stride, max_stride;
-
-	/*
-	 * No remapping for invisible planes since we don't have
-	 * an actual source viewport to remap.
-	 */
-	if (!plane_state->uapi.visible)
-		return false;
-
-	if (!intel_plane_can_remap(plane_state))
-		return false;
-
-	/*
-	 * FIXME: aux plane limits on gen9+ are
-	 * unclear in Bspec, for now no checking.
-	 */
-	stride = intel_fb_pitch(fb, 0, rotation);
-	max_stride = plane->max_stride(plane, fb->format->format,
-				       fb->modifier, rotation);
-
-	return stride > max_stride;
-}
-
-void
-intel_fb_plane_get_subsampling(int *hsub, int *vsub,
-			       const struct drm_framebuffer *fb,
-			       int color_plane)
-{
-	int main_plane;
-
-	if (color_plane == 0) {
-		*hsub = 1;
-		*vsub = 1;
-
-		return;
-	}
-
-	/*
-	 * TODO: Deduct the subsampling from the char block for all CCS
-	 * formats and planes.
-	 */
-	if (!is_gen12_ccs_plane(fb, color_plane)) {
-		*hsub = fb->format->hsub;
-		*vsub = fb->format->vsub;
-
-		return;
-	}
-
-	main_plane = skl_ccs_to_main_plane(fb, color_plane);
-	*hsub = drm_format_info_block_width(fb->format, color_plane) /
-		drm_format_info_block_width(fb->format, main_plane);
-
-	/*
-	 * The min stride check in the core framebuffer_check() function
-	 * assumes that format->hsub applies to every plane except for the
-	 * first plane. That's incorrect for the CCS AUX plane of the first
-	 * plane, but for the above check to pass we must define the block
-	 * width with that subsampling applied to it. Adjust the width here
-	 * accordingly, so we can calculate the actual subsampling factor.
-	 */
-	if (main_plane == 0)
-		*hsub *= fb->format->hsub;
-
-	*vsub = 32;
-}
-static int
-intel_fb_check_ccs_xy(struct drm_framebuffer *fb, int ccs_plane, int x, int y)
-{
-	struct drm_i915_private *i915 = to_i915(fb->dev);
-	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
-	int main_plane;
-	int hsub, vsub;
-	int tile_width, tile_height;
-	int ccs_x, ccs_y;
-	int main_x, main_y;
-
-	if (!is_ccs_plane(fb, ccs_plane) || is_gen12_ccs_cc_plane(fb, ccs_plane))
-		return 0;
-
-	intel_tile_dims(fb, ccs_plane, &tile_width, &tile_height);
-	intel_fb_plane_get_subsampling(&hsub, &vsub, fb, ccs_plane);
-
-	tile_width *= hsub;
-	tile_height *= vsub;
-
-	ccs_x = (x * hsub) % tile_width;
-	ccs_y = (y * vsub) % tile_height;
-
-	main_plane = skl_ccs_to_main_plane(fb, ccs_plane);
-	main_x = intel_fb->normal[main_plane].x % tile_width;
-	main_y = intel_fb->normal[main_plane].y % tile_height;
-
-	/*
-	 * CCS doesn't have its own x/y offset register, so the intra CCS tile
-	 * x/y offsets must match between CCS and the main surface.
-	 */
-	if (main_x != ccs_x || main_y != ccs_y) {
-		drm_dbg_kms(&i915->drm,
-			      "Bad CCS x/y (main %d,%d ccs %d,%d) full (main %d,%d ccs %d,%d)\n",
-			      main_x, main_y,
-			      ccs_x, ccs_y,
-			      intel_fb->normal[main_plane].x,
-			      intel_fb->normal[main_plane].y,
-			      x, y);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static void
-intel_fb_plane_dims(int *w, int *h, struct drm_framebuffer *fb, int color_plane)
-{
-	int main_plane = is_ccs_plane(fb, color_plane) ?
-			 skl_ccs_to_main_plane(fb, color_plane) : 0;
-	int main_hsub, main_vsub;
-	int hsub, vsub;
-
-	intel_fb_plane_get_subsampling(&main_hsub, &main_vsub, fb, main_plane);
-	intel_fb_plane_get_subsampling(&hsub, &vsub, fb, color_plane);
-	*w = fb->width / main_hsub / hsub;
-	*h = fb->height / main_vsub / vsub;
-}
-
-/*
- * Setup the rotated view for an FB plane and return the size the GTT mapping
- * requires for this view.
- */
-static u32
-setup_fb_rotation(int plane, const struct intel_remapped_plane_info *plane_info,
-		  u32 gtt_offset_rotated, int x, int y,
-		  unsigned int width, unsigned int height,
-		  unsigned int tile_size,
-		  unsigned int tile_width, unsigned int tile_height,
-		  struct drm_framebuffer *fb)
-{
-	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
-	struct intel_rotation_info *rot_info = &intel_fb->rot_info;
-	unsigned int pitch_tiles;
-	struct drm_rect r;
-
-	/* Y or Yf modifiers required for 90/270 rotation */
-	if (fb->modifier != I915_FORMAT_MOD_Y_TILED &&
-	    fb->modifier != I915_FORMAT_MOD_Yf_TILED)
-		return 0;
-
-	if (drm_WARN_ON(fb->dev, plane >= ARRAY_SIZE(rot_info->plane)))
-		return 0;
-
-	rot_info->plane[plane] = *plane_info;
-
-	intel_fb->rotated[plane].pitch = plane_info->height * tile_height;
-
-	/* rotate the x/y offsets to match the GTT view */
-	drm_rect_init(&r, x, y, width, height);
-	drm_rect_rotate(&r,
-			plane_info->width * tile_width,
-			plane_info->height * tile_height,
-			DRM_MODE_ROTATE_270);
-	x = r.x1;
-	y = r.y1;
-
-	/* rotate the tile dimensions to match the GTT view */
-	pitch_tiles = intel_fb->rotated[plane].pitch / tile_height;
-	swap(tile_width, tile_height);
-
-	/*
-	 * We only keep the x/y offsets, so push all of the
-	 * gtt offset into the x/y offsets.
-	 */
-	intel_adjust_tile_offset(&x, &y,
-				 tile_width, tile_height,
-				 tile_size, pitch_tiles,
-				 gtt_offset_rotated * tile_size, 0);
-
-	/*
-	 * First pixel of the framebuffer from
-	 * the start of the rotated gtt mapping.
-	 */
-	intel_fb->rotated[plane].x = x;
-	intel_fb->rotated[plane].y = y;
-
-	return plane_info->width * plane_info->height;
-}
-
-static int
-intel_fill_fb_info(struct drm_i915_private *dev_priv,
-		   struct drm_framebuffer *fb)
-{
-	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
-	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
-	u32 gtt_offset_rotated = 0;
-	unsigned int max_size = 0;
-	int i, num_planes = fb->format->num_planes;
-	unsigned int tile_size = intel_tile_size(dev_priv);
-
-	for (i = 0; i < num_planes; i++) {
-		unsigned int width, height;
-		unsigned int cpp, size;
-		u32 offset;
-		int x, y;
-		int ret;
-
-		/*
-		 * Plane 2 of Render Compression with Clear Color fb modifier
-		 * is consumed by the driver and not passed to DE. Skip the
-		 * arithmetic related to alignment and offset calculation.
-		 */
-		if (is_gen12_ccs_cc_plane(fb, i)) {
-			if (IS_ALIGNED(fb->offsets[i], PAGE_SIZE))
-				continue;
-			else
-				return -EINVAL;
-		}
-
-		cpp = fb->format->cpp[i];
-		intel_fb_plane_dims(&width, &height, fb, i);
-
-		ret = intel_fb_offset_to_xy(&x, &y, fb, i);
-		if (ret) {
-			drm_dbg_kms(&dev_priv->drm,
-				    "bad fb plane %d offset: 0x%x\n",
-				    i, fb->offsets[i]);
-			return ret;
-		}
-
-		ret = intel_fb_check_ccs_xy(fb, i, x, y);
-		if (ret)
-			return ret;
-
-		/*
-		 * The fence (if used) is aligned to the start of the object
-		 * so having the framebuffer wrap around across the edge of the
-		 * fenced region doesn't really work. We have no API to configure
-		 * the fence start offset within the object (nor could we probably
-		 * on gen2/3). So it's just easier if we just require that the
-		 * fb layout agrees with the fence layout. We already check that the
-		 * fb stride matches the fence stride elsewhere.
-		 */
-		if (i == 0 && i915_gem_object_is_tiled(obj) &&
-		    (x + width) * cpp > fb->pitches[i]) {
-			drm_dbg_kms(&dev_priv->drm,
-				    "bad fb plane %d offset: 0x%x\n",
-				     i, fb->offsets[i]);
-			return -EINVAL;
-		}
-
-		/*
-		 * First pixel of the framebuffer from
-		 * the start of the normal gtt mapping.
-		 */
-		intel_fb->normal[i].x = x;
-		intel_fb->normal[i].y = y;
-
-		offset = intel_compute_aligned_offset(dev_priv, &x, &y, fb, i,
-						      fb->pitches[i],
-						      DRM_MODE_ROTATE_0,
-						      tile_size);
-		offset /= tile_size;
-
-		if (!is_surface_linear(fb, i)) {
-			struct intel_remapped_plane_info plane_info;
-			unsigned int tile_width, tile_height;
-
-			intel_tile_dims(fb, i, &tile_width, &tile_height);
-
-			plane_info.offset = offset;
-			plane_info.stride = DIV_ROUND_UP(fb->pitches[i],
-							 tile_width * cpp);
-			plane_info.width = DIV_ROUND_UP(x + width, tile_width);
-			plane_info.height = DIV_ROUND_UP(y + height,
-							 tile_height);
-
-			/* how many tiles does this plane need */
-			size = plane_info.stride * plane_info.height;
-			/*
-			 * If the plane isn't horizontally tile aligned,
-			 * we need one more tile.
-			 */
-			if (x != 0)
-				size++;
-
-			gtt_offset_rotated +=
-				setup_fb_rotation(i, &plane_info,
-						  gtt_offset_rotated,
-						  x, y, width, height,
-						  tile_size,
-						  tile_width, tile_height,
-						  fb);
-		} else {
-			size = DIV_ROUND_UP((y + height) * fb->pitches[i] +
-					    x * cpp, tile_size);
-		}
-
-		/* how many tiles in total needed in the bo */
-		max_size = max(max_size, offset + size);
-	}
-
-	if (mul_u32_u32(max_size, tile_size) > obj->base.size) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "fb too big for bo (need %llu bytes, have %zu bytes)\n",
-			    mul_u32_u32(max_size, tile_size), obj->base.size);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static void
-intel_plane_remap_gtt(struct intel_plane_state *plane_state)
-{
-	struct drm_i915_private *dev_priv =
-		to_i915(plane_state->uapi.plane->dev);
-	struct drm_framebuffer *fb = plane_state->hw.fb;
-	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
-	struct intel_rotation_info *info = &plane_state->view.rotated;
-	unsigned int rotation = plane_state->hw.rotation;
-	int i, num_planes = fb->format->num_planes;
-	unsigned int tile_size = intel_tile_size(dev_priv);
-	unsigned int src_x, src_y;
-	unsigned int src_w, src_h;
-	u32 gtt_offset = 0;
-
-	memset(&plane_state->view, 0, sizeof(plane_state->view));
-	plane_state->view.type = drm_rotation_90_or_270(rotation) ?
-		I915_GGTT_VIEW_ROTATED : I915_GGTT_VIEW_REMAPPED;
-
-	src_x = plane_state->uapi.src.x1 >> 16;
-	src_y = plane_state->uapi.src.y1 >> 16;
-	src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
-	src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
-
-	drm_WARN_ON(&dev_priv->drm, is_ccs_modifier(fb->modifier));
-
-	/* Make src coordinates relative to the viewport */
-	drm_rect_translate(&plane_state->uapi.src,
-			   -(src_x << 16), -(src_y << 16));
-
-	/* Rotate src coordinates to match rotated GTT view */
-	if (drm_rotation_90_or_270(rotation))
-		drm_rect_rotate(&plane_state->uapi.src,
-				src_w << 16, src_h << 16,
-				DRM_MODE_ROTATE_270);
-
-	for (i = 0; i < num_planes; i++) {
-		unsigned int hsub = i ? fb->format->hsub : 1;
-		unsigned int vsub = i ? fb->format->vsub : 1;
-		unsigned int cpp = fb->format->cpp[i];
-		unsigned int tile_width, tile_height;
-		unsigned int width, height;
-		unsigned int pitch_tiles;
-		unsigned int x, y;
-		u32 offset;
-
-		intel_tile_dims(fb, i, &tile_width, &tile_height);
-
-		x = src_x / hsub;
-		y = src_y / vsub;
-		width = src_w / hsub;
-		height = src_h / vsub;
-
-		/*
-		 * First pixel of the src viewport from the
-		 * start of the normal gtt mapping.
-		 */
-		x += intel_fb->normal[i].x;
-		y += intel_fb->normal[i].y;
-
-		offset = intel_compute_aligned_offset(dev_priv, &x, &y,
-						      fb, i, fb->pitches[i],
-						      DRM_MODE_ROTATE_0, tile_size);
-		offset /= tile_size;
-
-		drm_WARN_ON(&dev_priv->drm, i >= ARRAY_SIZE(info->plane));
-		info->plane[i].offset = offset;
-		info->plane[i].stride = DIV_ROUND_UP(fb->pitches[i],
-						     tile_width * cpp);
-		info->plane[i].width = DIV_ROUND_UP(x + width, tile_width);
-		info->plane[i].height = DIV_ROUND_UP(y + height, tile_height);
-
-		if (drm_rotation_90_or_270(rotation)) {
-			struct drm_rect r;
-
-			/* rotate the x/y offsets to match the GTT view */
-			drm_rect_init(&r, x, y, width, height);
-			drm_rect_rotate(&r,
-					info->plane[i].width * tile_width,
-					info->plane[i].height * tile_height,
-					DRM_MODE_ROTATE_270);
-			x = r.x1;
-			y = r.y1;
-
-			pitch_tiles = info->plane[i].height;
-			plane_state->color_plane[i].stride = pitch_tiles * tile_height;
-
-			/* rotate the tile dimensions to match the GTT view */
-			swap(tile_width, tile_height);
-		} else {
-			pitch_tiles = info->plane[i].width;
-			plane_state->color_plane[i].stride = pitch_tiles * tile_width * cpp;
-		}
-
-		/*
-		 * We only keep the x/y offsets, so push all of the
-		 * gtt offset into the x/y offsets.
-		 */
-		intel_adjust_tile_offset(&x, &y,
-					 tile_width, tile_height,
-					 tile_size, pitch_tiles,
-					 gtt_offset * tile_size, 0);
-
-		gtt_offset += info->plane[i].width * info->plane[i].height;
-
-		plane_state->color_plane[i].offset = 0;
-		plane_state->color_plane[i].x = x;
-		plane_state->color_plane[i].y = y;
-	}
-}
-
-int
-intel_plane_compute_gtt(struct intel_plane_state *plane_state)
-{
-	const struct intel_framebuffer *fb =
-		to_intel_framebuffer(plane_state->hw.fb);
-	unsigned int rotation = plane_state->hw.rotation;
-	int i, num_planes;
-
-	if (!fb)
-		return 0;
-
-	num_planes = fb->base.format->num_planes;
-
-	if (intel_plane_needs_remap(plane_state)) {
-		intel_plane_remap_gtt(plane_state);
-
-		/*
-		 * Sometimes even remapping can't overcome
-		 * the stride limitations :( Can happen with
-		 * big plane sizes and suitably misaligned
-		 * offsets.
-		 */
-		return intel_plane_check_stride(plane_state);
-	}
-
-	intel_fill_fb_ggtt_view(&plane_state->view, &fb->base, rotation);
-
-	for (i = 0; i < num_planes; i++) {
-		plane_state->color_plane[i].stride = intel_fb_pitch(&fb->base, i, rotation);
-		plane_state->color_plane[i].offset = 0;
-
-		if (drm_rotation_90_or_270(rotation)) {
-			plane_state->color_plane[i].x = fb->rotated[i].x;
-			plane_state->color_plane[i].y = fb->rotated[i].y;
-		} else {
-			plane_state->color_plane[i].x = fb->normal[i].x;
-			plane_state->color_plane[i].y = fb->normal[i].y;
-		}
-	}
-
-	/* Rotate src coordinates to match rotated GTT view */
-	if (drm_rotation_90_or_270(rotation))
-		drm_rect_rotate(&plane_state->uapi.src,
-				fb->base.width << 16, fb->base.height << 16,
-				DRM_MODE_ROTATE_270);
-
-	return intel_plane_check_stride(plane_state);
-}
-
 static struct i915_vma *
 initial_plane_vma(struct drm_i915_private *i915,
 		  struct intel_initial_plane_config *plane_config)
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index 96112e3e5bd1..45660f2c587f 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -514,7 +514,6 @@ void intel_link_compute_m_n(u16 bpp, int nlanes,
 void lpt_disable_clkout_dp(struct drm_i915_private *dev_priv);
 u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
 			      u32 pixel_format, u64 modifier);
-bool intel_plane_can_remap(const struct intel_plane_state *plane_state);
 enum drm_mode_status
 intel_mode_valid_max_plane_size(struct drm_i915_private *dev_priv,
 				const struct drm_display_mode *mode,
@@ -626,10 +625,6 @@ bool
 intel_format_info_is_yuv_semiplanar(const struct drm_format_info *info,
 				    u64 modifier);
 
-int intel_plane_compute_gtt(struct intel_plane_state *plane_state);
-u32 intel_plane_compute_aligned_offset(int *x, int *y,
-				       const struct intel_plane_state *state,
-				       int color_plane);
 int intel_plane_pin_fb(struct intel_plane_state *plane_state);
 void intel_plane_unpin_fb(struct intel_plane_state *old_plane_state);
 struct intel_encoder *
@@ -638,15 +633,7 @@ intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
 
 unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
 				  int color_plane);
-void intel_fb_plane_get_subsampling(int *hsub, int *vsub,
-				    const struct drm_framebuffer *fb,
-				    int color_plane);
-u32 intel_plane_adjust_aligned_offset(int *x, int *y,
-				      const struct intel_plane_state *state,
-				      int color_plane,
-				      u32 old_offset, u32 new_offset);
 unsigned int intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane);
-unsigned int intel_tile_height(const struct drm_framebuffer *fb, int color_plane);
 
 void intel_display_driver_register(struct drm_i915_private *i915);
 void intel_display_driver_unregister(struct drm_i915_private *i915);
diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index 8b14e069fc71..b872eb29fd0d 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -5,6 +5,7 @@
 
 #include <drm/drm_framebuffer.h>
 
+#include "intel_display.h"
 #include "intel_display_types.h"
 #include "intel_fb.h"
 
@@ -27,6 +28,20 @@ bool is_gen12_ccs_cc_plane(const struct drm_framebuffer *fb, int plane)
 	       plane == 2;
 }
 
+bool is_aux_plane(const struct drm_framebuffer *fb, int plane)
+{
+	if (is_ccs_modifier(fb->modifier))
+		return is_ccs_plane(fb, plane);
+
+	return plane == 1;
+}
+
+bool is_semiplanar_uv_plane(const struct drm_framebuffer *fb, int color_plane)
+{
+	return intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier) &&
+		color_plane == 1;
+}
+
 bool is_surface_linear(const struct drm_framebuffer *fb, int color_plane)
 {
 	return fb->modifier == DRM_FORMAT_MOD_LINEAR ||
@@ -65,6 +80,750 @@ int skl_main_to_aux_plane(const struct drm_framebuffer *fb, int main_plane)
 		return 0;
 }
 
+unsigned int intel_tile_size(const struct drm_i915_private *dev_priv)
+{
+	return IS_DISPLAY_VER(dev_priv, 2) ? 2048 : 4096;
+}
+
+unsigned int intel_tile_height(const struct drm_framebuffer *fb, int color_plane)
+{
+	if (is_gen12_ccs_plane(fb, color_plane))
+		return 1;
+
+	return intel_tile_size(to_i915(fb->dev)) /
+		intel_tile_width_bytes(fb, color_plane);
+}
+
+/* Return the tile dimensions in pixel units */
+static void intel_tile_dims(const struct drm_framebuffer *fb, int color_plane,
+			    unsigned int *tile_width,
+			    unsigned int *tile_height)
+{
+	unsigned int tile_width_bytes = intel_tile_width_bytes(fb, color_plane);
+	unsigned int cpp = fb->format->cpp[color_plane];
+
+	*tile_width = tile_width_bytes / cpp;
+	*tile_height = intel_tile_height(fb, color_plane);
+}
+
+unsigned int intel_tile_row_size(const struct drm_framebuffer *fb, int color_plane)
+{
+	unsigned int tile_width, tile_height;
+
+	intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
+
+	return fb->pitches[color_plane] * tile_height;
+}
+
+unsigned int intel_cursor_alignment(const struct drm_i915_private *dev_priv)
+{
+	if (IS_I830(dev_priv))
+		return 16 * 1024;
+	else if (IS_I85X(dev_priv))
+		return 256;
+	else if (IS_I845G(dev_priv) || IS_I865G(dev_priv))
+		return 32;
+	else
+		return 4 * 1024;
+}
+
+void intel_fb_plane_get_subsampling(int *hsub, int *vsub,
+				    const struct drm_framebuffer *fb,
+				    int color_plane)
+{
+	int main_plane;
+
+	if (color_plane == 0) {
+		*hsub = 1;
+		*vsub = 1;
+
+		return;
+	}
+
+	/*
+	 * TODO: Deduct the subsampling from the char block for all CCS
+	 * formats and planes.
+	 */
+	if (!is_gen12_ccs_plane(fb, color_plane)) {
+		*hsub = fb->format->hsub;
+		*vsub = fb->format->vsub;
+
+		return;
+	}
+
+	main_plane = skl_ccs_to_main_plane(fb, color_plane);
+	*hsub = drm_format_info_block_width(fb->format, color_plane) /
+		drm_format_info_block_width(fb->format, main_plane);
+
+	/*
+	 * The min stride check in the core framebuffer_check() function
+	 * assumes that format->hsub applies to every plane except for the
+	 * first plane. That's incorrect for the CCS AUX plane of the first
+	 * plane, but for the above check to pass we must define the block
+	 * width with that subsampling applied to it. Adjust the width here
+	 * accordingly, so we can calculate the actual subsampling factor.
+	 */
+	if (main_plane == 0)
+		*hsub *= fb->format->hsub;
+
+	*vsub = 32;
+}
+
+static void intel_fb_plane_dims(int *w, int *h, struct drm_framebuffer *fb, int color_plane)
+{
+	int main_plane = is_ccs_plane(fb, color_plane) ?
+			 skl_ccs_to_main_plane(fb, color_plane) : 0;
+	int main_hsub, main_vsub;
+	int hsub, vsub;
+
+	intel_fb_plane_get_subsampling(&main_hsub, &main_vsub, fb, main_plane);
+	intel_fb_plane_get_subsampling(&hsub, &vsub, fb, color_plane);
+	*w = fb->width / main_hsub / hsub;
+	*h = fb->height / main_vsub / vsub;
+}
+
+static u32 intel_adjust_tile_offset(int *x, int *y,
+				    unsigned int tile_width,
+				    unsigned int tile_height,
+				    unsigned int tile_size,
+				    unsigned int pitch_tiles,
+				    u32 old_offset,
+				    u32 new_offset)
+{
+	unsigned int pitch_pixels = pitch_tiles * tile_width;
+	unsigned int tiles;
+
+	WARN_ON(old_offset & (tile_size - 1));
+	WARN_ON(new_offset & (tile_size - 1));
+	WARN_ON(new_offset > old_offset);
+
+	tiles = (old_offset - new_offset) / tile_size;
+
+	*y += tiles / pitch_tiles * tile_height;
+	*x += tiles % pitch_tiles * tile_width;
+
+	/* minimize x in case it got needlessly big */
+	*y += *x / pitch_pixels * tile_height;
+	*x %= pitch_pixels;
+
+	return new_offset;
+}
+
+static u32 intel_adjust_aligned_offset(int *x, int *y,
+				       const struct drm_framebuffer *fb,
+				       int color_plane,
+				       unsigned int rotation,
+				       unsigned int pitch,
+				       u32 old_offset, u32 new_offset)
+{
+	struct drm_i915_private *dev_priv = to_i915(fb->dev);
+	unsigned int cpp = fb->format->cpp[color_plane];
+
+	drm_WARN_ON(&dev_priv->drm, new_offset > old_offset);
+
+	if (!is_surface_linear(fb, color_plane)) {
+		unsigned int tile_size, tile_width, tile_height;
+		unsigned int pitch_tiles;
+
+		tile_size = intel_tile_size(dev_priv);
+		intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
+
+		if (drm_rotation_90_or_270(rotation)) {
+			pitch_tiles = pitch / tile_height;
+			swap(tile_width, tile_height);
+		} else {
+			pitch_tiles = pitch / (tile_width * cpp);
+		}
+
+		intel_adjust_tile_offset(x, y, tile_width, tile_height,
+					 tile_size, pitch_tiles,
+					 old_offset, new_offset);
+	} else {
+		old_offset += *y * pitch + *x * cpp;
+
+		*y = (old_offset - new_offset) / pitch;
+		*x = ((old_offset - new_offset) - *y * pitch) / cpp;
+	}
+
+	return new_offset;
+}
+
+/*
+ * Adjust the tile offset by moving the difference into
+ * the x/y offsets.
+ */
+u32 intel_plane_adjust_aligned_offset(int *x, int *y,
+				      const struct intel_plane_state *state,
+				      int color_plane,
+				      u32 old_offset, u32 new_offset)
+{
+	return intel_adjust_aligned_offset(x, y, state->hw.fb, color_plane,
+					   state->hw.rotation,
+					   state->color_plane[color_plane].stride,
+					   old_offset, new_offset);
+}
+
+/*
+ * Computes the aligned offset to the base tile and adjusts
+ * x, y. bytes per pixel is assumed to be a power-of-two.
+ *
+ * In the 90/270 rotated case, x and y are assumed
+ * to be already rotated to match the rotated GTT view, and
+ * pitch is the tile_height aligned framebuffer height.
+ *
+ * This function is used when computing the derived information
+ * under intel_framebuffer, so using any of that information
+ * here is not allowed. Anything under drm_framebuffer can be
+ * used. This is why the user has to pass in the pitch since it
+ * is specified in the rotated orientation.
+ */
+static u32 intel_compute_aligned_offset(struct drm_i915_private *dev_priv,
+					int *x, int *y,
+					const struct drm_framebuffer *fb,
+					int color_plane,
+					unsigned int pitch,
+					unsigned int rotation,
+					u32 alignment)
+{
+	unsigned int cpp = fb->format->cpp[color_plane];
+	u32 offset, offset_aligned;
+
+	if (!is_surface_linear(fb, color_plane)) {
+		unsigned int tile_size, tile_width, tile_height;
+		unsigned int tile_rows, tiles, pitch_tiles;
+
+		tile_size = intel_tile_size(dev_priv);
+		intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
+
+		if (drm_rotation_90_or_270(rotation)) {
+			pitch_tiles = pitch / tile_height;
+			swap(tile_width, tile_height);
+		} else {
+			pitch_tiles = pitch / (tile_width * cpp);
+		}
+
+		tile_rows = *y / tile_height;
+		*y %= tile_height;
+
+		tiles = *x / tile_width;
+		*x %= tile_width;
+
+		offset = (tile_rows * pitch_tiles + tiles) * tile_size;
+
+		offset_aligned = offset;
+		if (alignment)
+			offset_aligned = rounddown(offset_aligned, alignment);
+
+		intel_adjust_tile_offset(x, y, tile_width, tile_height,
+					 tile_size, pitch_tiles,
+					 offset, offset_aligned);
+	} else {
+		offset = *y * pitch + *x * cpp;
+		offset_aligned = offset;
+		if (alignment) {
+			offset_aligned = rounddown(offset_aligned, alignment);
+			*y = (offset % alignment) / pitch;
+			*x = ((offset % alignment) - *y * pitch) / cpp;
+		} else {
+			*y = *x = 0;
+		}
+	}
+
+	return offset_aligned;
+}
+
+u32 intel_plane_compute_aligned_offset(int *x, int *y,
+				       const struct intel_plane_state *state,
+				       int color_plane)
+{
+	struct intel_plane *intel_plane = to_intel_plane(state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(intel_plane->base.dev);
+	const struct drm_framebuffer *fb = state->hw.fb;
+	unsigned int rotation = state->hw.rotation;
+	int pitch = state->color_plane[color_plane].stride;
+	u32 alignment;
+
+	if (intel_plane->id == PLANE_CURSOR)
+		alignment = intel_cursor_alignment(dev_priv);
+	else
+		alignment = intel_surf_alignment(fb, color_plane);
+
+	return intel_compute_aligned_offset(dev_priv, x, y, fb, color_plane,
+					    pitch, rotation, alignment);
+}
+
+/* Convert the fb->offset[] into x/y offsets */
+static int intel_fb_offset_to_xy(int *x, int *y,
+				 const struct drm_framebuffer *fb,
+				 int color_plane)
+{
+	struct drm_i915_private *dev_priv = to_i915(fb->dev);
+	unsigned int height;
+	u32 alignment;
+
+	if (DISPLAY_VER(dev_priv) >= 12 &&
+	    is_semiplanar_uv_plane(fb, color_plane))
+		alignment = intel_tile_row_size(fb, color_plane);
+	else if (fb->modifier != DRM_FORMAT_MOD_LINEAR)
+		alignment = intel_tile_size(dev_priv);
+	else
+		alignment = 0;
+
+	if (alignment != 0 && fb->offsets[color_plane] % alignment) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Misaligned offset 0x%08x for color plane %d\n",
+			    fb->offsets[color_plane], color_plane);
+		return -EINVAL;
+	}
+
+	height = drm_framebuffer_plane_height(fb->height, fb, color_plane);
+	height = ALIGN(height, intel_tile_height(fb, color_plane));
+
+	/* Catch potential overflows early */
+	if (add_overflows_t(u32, mul_u32_u32(height, fb->pitches[color_plane]),
+			    fb->offsets[color_plane])) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Bad offset 0x%08x or pitch %d for color plane %d\n",
+			    fb->offsets[color_plane], fb->pitches[color_plane],
+			    color_plane);
+		return -ERANGE;
+	}
+
+	*x = 0;
+	*y = 0;
+
+	intel_adjust_aligned_offset(x, y,
+				    fb, color_plane, DRM_MODE_ROTATE_0,
+				    fb->pitches[color_plane],
+				    fb->offsets[color_plane], 0);
+
+	return 0;
+}
+
+static int intel_fb_check_ccs_xy(struct drm_framebuffer *fb, int ccs_plane, int x, int y)
+{
+	struct drm_i915_private *i915 = to_i915(fb->dev);
+	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+	int main_plane;
+	int hsub, vsub;
+	int tile_width, tile_height;
+	int ccs_x, ccs_y;
+	int main_x, main_y;
+
+	if (!is_ccs_plane(fb, ccs_plane) || is_gen12_ccs_cc_plane(fb, ccs_plane))
+		return 0;
+
+	intel_tile_dims(fb, ccs_plane, &tile_width, &tile_height);
+	intel_fb_plane_get_subsampling(&hsub, &vsub, fb, ccs_plane);
+
+	tile_width *= hsub;
+	tile_height *= vsub;
+
+	ccs_x = (x * hsub) % tile_width;
+	ccs_y = (y * vsub) % tile_height;
+
+	main_plane = skl_ccs_to_main_plane(fb, ccs_plane);
+	main_x = intel_fb->normal[main_plane].x % tile_width;
+	main_y = intel_fb->normal[main_plane].y % tile_height;
+
+	/*
+	 * CCS doesn't have its own x/y offset register, so the intra CCS tile
+	 * x/y offsets must match between CCS and the main surface.
+	 */
+	if (main_x != ccs_x || main_y != ccs_y) {
+		drm_dbg_kms(&i915->drm,
+			      "Bad CCS x/y (main %d,%d ccs %d,%d) full (main %d,%d ccs %d,%d)\n",
+			      main_x, main_y,
+			      ccs_x, ccs_y,
+			      intel_fb->normal[main_plane].x,
+			      intel_fb->normal[main_plane].y,
+			      x, y);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static bool intel_plane_can_remap(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int i;
+
+	/* We don't want to deal with remapping with cursors */
+	if (plane->id == PLANE_CURSOR)
+		return false;
+
+	/*
+	 * The display engine limits already match/exceed the
+	 * render engine limits, so not much point in remapping.
+	 * Would also need to deal with the fence POT alignment
+	 * and gen2 2KiB GTT tile size.
+	 */
+	if (DISPLAY_VER(dev_priv) < 4)
+		return false;
+
+	/*
+	 * The new CCS hash mode isn't compatible with remapping as
+	 * the virtual address of the pages affects the compressed data.
+	 */
+	if (is_ccs_modifier(fb->modifier))
+		return false;
+
+	/* Linear needs a page aligned stride for remapping */
+	if (fb->modifier == DRM_FORMAT_MOD_LINEAR) {
+		unsigned int alignment = intel_tile_size(dev_priv) - 1;
+
+		for (i = 0; i < fb->format->num_planes; i++) {
+			if (fb->pitches[i] & alignment)
+				return false;
+		}
+	}
+
+	return true;
+}
+
+int intel_fb_pitch(const struct drm_framebuffer *fb, int color_plane, unsigned int rotation)
+{
+	if (drm_rotation_90_or_270(rotation))
+		return to_intel_framebuffer(fb)->rotated[color_plane].pitch;
+	else
+		return fb->pitches[color_plane];
+}
+
+static bool intel_plane_needs_remap(const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	unsigned int rotation = plane_state->hw.rotation;
+	u32 stride, max_stride;
+
+	/*
+	 * No remapping for invisible planes since we don't have
+	 * an actual source viewport to remap.
+	 */
+	if (!plane_state->uapi.visible)
+		return false;
+
+	if (!intel_plane_can_remap(plane_state))
+		return false;
+
+	/*
+	 * FIXME: aux plane limits on gen9+ are
+	 * unclear in Bspec, for now no checking.
+	 */
+	stride = intel_fb_pitch(fb, 0, rotation);
+	max_stride = plane->max_stride(plane, fb->format->format,
+				       fb->modifier, rotation);
+
+	return stride > max_stride;
+}
+
+/*
+ * Setup the rotated view for an FB plane and return the size the GTT mapping
+ * requires for this view.
+ */
+static u32 setup_fb_rotation(int plane, const struct intel_remapped_plane_info *plane_info,
+			     u32 gtt_offset_rotated, int x, int y,
+			     unsigned int width, unsigned int height,
+			     unsigned int tile_size,
+			     unsigned int tile_width, unsigned int tile_height,
+			     struct drm_framebuffer *fb)
+{
+	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+	struct intel_rotation_info *rot_info = &intel_fb->rot_info;
+	unsigned int pitch_tiles;
+	struct drm_rect r;
+
+	/* Y or Yf modifiers required for 90/270 rotation */
+	if (fb->modifier != I915_FORMAT_MOD_Y_TILED &&
+	    fb->modifier != I915_FORMAT_MOD_Yf_TILED)
+		return 0;
+
+	if (drm_WARN_ON(fb->dev, plane >= ARRAY_SIZE(rot_info->plane)))
+		return 0;
+
+	rot_info->plane[plane] = *plane_info;
+
+	intel_fb->rotated[plane].pitch = plane_info->height * tile_height;
+
+	/* rotate the x/y offsets to match the GTT view */
+	drm_rect_init(&r, x, y, width, height);
+	drm_rect_rotate(&r,
+			plane_info->width * tile_width,
+			plane_info->height * tile_height,
+			DRM_MODE_ROTATE_270);
+	x = r.x1;
+	y = r.y1;
+
+	/* rotate the tile dimensions to match the GTT view */
+	pitch_tiles = intel_fb->rotated[plane].pitch / tile_height;
+	swap(tile_width, tile_height);
+
+	/*
+	 * We only keep the x/y offsets, so push all of the
+	 * gtt offset into the x/y offsets.
+	 */
+	intel_adjust_tile_offset(&x, &y,
+				 tile_width, tile_height,
+				 tile_size, pitch_tiles,
+				 gtt_offset_rotated * tile_size, 0);
+
+	/*
+	 * First pixel of the framebuffer from
+	 * the start of the rotated gtt mapping.
+	 */
+	intel_fb->rotated[plane].x = x;
+	intel_fb->rotated[plane].y = y;
+
+	return plane_info->width * plane_info->height;
+}
+
+int intel_fill_fb_info(struct drm_i915_private *dev_priv, struct drm_framebuffer *fb)
+{
+	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	u32 gtt_offset_rotated = 0;
+	unsigned int max_size = 0;
+	int i, num_planes = fb->format->num_planes;
+	unsigned int tile_size = intel_tile_size(dev_priv);
+
+	for (i = 0; i < num_planes; i++) {
+		unsigned int width, height;
+		unsigned int cpp, size;
+		u32 offset;
+		int x, y;
+		int ret;
+
+		/*
+		 * Plane 2 of Render Compression with Clear Color fb modifier
+		 * is consumed by the driver and not passed to DE. Skip the
+		 * arithmetic related to alignment and offset calculation.
+		 */
+		if (is_gen12_ccs_cc_plane(fb, i)) {
+			if (IS_ALIGNED(fb->offsets[i], PAGE_SIZE))
+				continue;
+			else
+				return -EINVAL;
+		}
+
+		cpp = fb->format->cpp[i];
+		intel_fb_plane_dims(&width, &height, fb, i);
+
+		ret = intel_fb_offset_to_xy(&x, &y, fb, i);
+		if (ret) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "bad fb plane %d offset: 0x%x\n",
+				    i, fb->offsets[i]);
+			return ret;
+		}
+
+		ret = intel_fb_check_ccs_xy(fb, i, x, y);
+		if (ret)
+			return ret;
+
+		/*
+		 * The fence (if used) is aligned to the start of the object
+		 * so having the framebuffer wrap around across the edge of the
+		 * fenced region doesn't really work. We have no API to configure
+		 * the fence start offset within the object (nor could we probably
+		 * on gen2/3). So it's just easier if we just require that the
+		 * fb layout agrees with the fence layout. We already check that the
+		 * fb stride matches the fence stride elsewhere.
+		 */
+		if (i == 0 && i915_gem_object_is_tiled(obj) &&
+		    (x + width) * cpp > fb->pitches[i]) {
+			drm_dbg_kms(&dev_priv->drm,
+				    "bad fb plane %d offset: 0x%x\n",
+				     i, fb->offsets[i]);
+			return -EINVAL;
+		}
+
+		/*
+		 * First pixel of the framebuffer from
+		 * the start of the normal gtt mapping.
+		 */
+		intel_fb->normal[i].x = x;
+		intel_fb->normal[i].y = y;
+
+		offset = intel_compute_aligned_offset(dev_priv, &x, &y, fb, i,
+						      fb->pitches[i],
+						      DRM_MODE_ROTATE_0,
+						      tile_size);
+		offset /= tile_size;
+
+		if (!is_surface_linear(fb, i)) {
+			struct intel_remapped_plane_info plane_info;
+			unsigned int tile_width, tile_height;
+
+			intel_tile_dims(fb, i, &tile_width, &tile_height);
+
+			plane_info.offset = offset;
+			plane_info.stride = DIV_ROUND_UP(fb->pitches[i],
+							 tile_width * cpp);
+			plane_info.width = DIV_ROUND_UP(x + width, tile_width);
+			plane_info.height = DIV_ROUND_UP(y + height,
+							 tile_height);
+
+			/* how many tiles does this plane need */
+			size = plane_info.stride * plane_info.height;
+			/*
+			 * If the plane isn't horizontally tile aligned,
+			 * we need one more tile.
+			 */
+			if (x != 0)
+				size++;
+
+			gtt_offset_rotated +=
+				setup_fb_rotation(i, &plane_info,
+						  gtt_offset_rotated,
+						  x, y, width, height,
+						  tile_size,
+						  tile_width, tile_height,
+						  fb);
+		} else {
+			size = DIV_ROUND_UP((y + height) * fb->pitches[i] +
+					    x * cpp, tile_size);
+		}
+
+		/* how many tiles in total needed in the bo */
+		max_size = max(max_size, offset + size);
+	}
+
+	if (mul_u32_u32(max_size, tile_size) > obj->base.size) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "fb too big for bo (need %llu bytes, have %zu bytes)\n",
+			    mul_u32_u32(max_size, tile_size), obj->base.size);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void intel_plane_remap_gtt(struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->uapi.plane->dev);
+	struct drm_framebuffer *fb = plane_state->hw.fb;
+	struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+	struct intel_rotation_info *info = &plane_state->view.rotated;
+	unsigned int rotation = plane_state->hw.rotation;
+	int i, num_planes = fb->format->num_planes;
+	unsigned int tile_size = intel_tile_size(dev_priv);
+	unsigned int src_x, src_y;
+	unsigned int src_w, src_h;
+	u32 gtt_offset = 0;
+
+	memset(&plane_state->view, 0, sizeof(plane_state->view));
+	plane_state->view.type = drm_rotation_90_or_270(rotation) ?
+		I915_GGTT_VIEW_ROTATED : I915_GGTT_VIEW_REMAPPED;
+
+	src_x = plane_state->uapi.src.x1 >> 16;
+	src_y = plane_state->uapi.src.y1 >> 16;
+	src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
+	src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
+
+	drm_WARN_ON(&dev_priv->drm, is_ccs_modifier(fb->modifier));
+
+	/* Make src coordinates relative to the viewport */
+	drm_rect_translate(&plane_state->uapi.src,
+			   -(src_x << 16), -(src_y << 16));
+
+	/* Rotate src coordinates to match rotated GTT view */
+	if (drm_rotation_90_or_270(rotation))
+		drm_rect_rotate(&plane_state->uapi.src,
+				src_w << 16, src_h << 16,
+				DRM_MODE_ROTATE_270);
+
+	for (i = 0; i < num_planes; i++) {
+		unsigned int hsub = i ? fb->format->hsub : 1;
+		unsigned int vsub = i ? fb->format->vsub : 1;
+		unsigned int cpp = fb->format->cpp[i];
+		unsigned int tile_width, tile_height;
+		unsigned int width, height;
+		unsigned int pitch_tiles;
+		unsigned int x, y;
+		u32 offset;
+
+		intel_tile_dims(fb, i, &tile_width, &tile_height);
+
+		x = src_x / hsub;
+		y = src_y / vsub;
+		width = src_w / hsub;
+		height = src_h / vsub;
+
+		/*
+		 * First pixel of the src viewport from the
+		 * start of the normal gtt mapping.
+		 */
+		x += intel_fb->normal[i].x;
+		y += intel_fb->normal[i].y;
+
+		offset = intel_compute_aligned_offset(dev_priv, &x, &y,
+						      fb, i, fb->pitches[i],
+						      DRM_MODE_ROTATE_0, tile_size);
+		offset /= tile_size;
+
+		drm_WARN_ON(&dev_priv->drm, i >= ARRAY_SIZE(info->plane));
+		info->plane[i].offset = offset;
+		info->plane[i].stride = DIV_ROUND_UP(fb->pitches[i],
+						     tile_width * cpp);
+		info->plane[i].width = DIV_ROUND_UP(x + width, tile_width);
+		info->plane[i].height = DIV_ROUND_UP(y + height, tile_height);
+
+		if (drm_rotation_90_or_270(rotation)) {
+			struct drm_rect r;
+
+			/* rotate the x/y offsets to match the GTT view */
+			drm_rect_init(&r, x, y, width, height);
+			drm_rect_rotate(&r,
+					info->plane[i].width * tile_width,
+					info->plane[i].height * tile_height,
+					DRM_MODE_ROTATE_270);
+			x = r.x1;
+			y = r.y1;
+
+			pitch_tiles = info->plane[i].height;
+			plane_state->color_plane[i].stride = pitch_tiles * tile_height;
+
+			/* rotate the tile dimensions to match the GTT view */
+			swap(tile_width, tile_height);
+		} else {
+			pitch_tiles = info->plane[i].width;
+			plane_state->color_plane[i].stride = pitch_tiles * tile_width * cpp;
+		}
+
+		/*
+		 * We only keep the x/y offsets, so push all of the
+		 * gtt offset into the x/y offsets.
+		 */
+		intel_adjust_tile_offset(&x, &y,
+					 tile_width, tile_height,
+					 tile_size, pitch_tiles,
+					 gtt_offset * tile_size, 0);
+
+		gtt_offset += info->plane[i].width * info->plane[i].height;
+
+		plane_state->color_plane[i].offset = 0;
+		plane_state->color_plane[i].x = x;
+		plane_state->color_plane[i].y = y;
+	}
+}
+
+void intel_fill_fb_ggtt_view(struct i915_ggtt_view *view,
+			     const struct drm_framebuffer *fb,
+			     unsigned int rotation)
+{
+	memset(view, 0, sizeof(*view));
+
+	view->type = I915_GGTT_VIEW_NORMAL;
+	if (drm_rotation_90_or_270(rotation)) {
+		view->type = I915_GGTT_VIEW_ROTATED;
+		view->rotated = to_intel_framebuffer(fb)->rot_info;
+	}
+}
+
 int intel_plane_check_stride(const struct intel_plane_state *plane_state)
 {
 	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
@@ -96,3 +855,51 @@ int intel_plane_check_stride(const struct intel_plane_state *plane_state)
 
 	return 0;
 }
+
+int intel_plane_compute_gtt(struct intel_plane_state *plane_state)
+{
+	const struct intel_framebuffer *fb =
+		to_intel_framebuffer(plane_state->hw.fb);
+	unsigned int rotation = plane_state->hw.rotation;
+	int i, num_planes;
+
+	if (!fb)
+		return 0;
+
+	num_planes = fb->base.format->num_planes;
+
+	if (intel_plane_needs_remap(plane_state)) {
+		intel_plane_remap_gtt(plane_state);
+
+		/*
+		 * Sometimes even remapping can't overcome
+		 * the stride limitations :( Can happen with
+		 * big plane sizes and suitably misaligned
+		 * offsets.
+		 */
+		return intel_plane_check_stride(plane_state);
+	}
+
+	intel_fill_fb_ggtt_view(&plane_state->view, &fb->base, rotation);
+
+	for (i = 0; i < num_planes; i++) {
+		plane_state->color_plane[i].stride = intel_fb_pitch(&fb->base, i, rotation);
+		plane_state->color_plane[i].offset = 0;
+
+		if (drm_rotation_90_or_270(rotation)) {
+			plane_state->color_plane[i].x = fb->rotated[i].x;
+			plane_state->color_plane[i].y = fb->rotated[i].y;
+		} else {
+			plane_state->color_plane[i].x = fb->normal[i].x;
+			plane_state->color_plane[i].y = fb->normal[i].y;
+		}
+	}
+
+	/* Rotate src coordinates to match rotated GTT view */
+	if (drm_rotation_90_or_270(rotation))
+		drm_rect_rotate(&plane_state->uapi.src,
+				fb->base.width << 16, fb->base.height << 16,
+				DRM_MODE_ROTATE_270);
+
+	return intel_plane_check_stride(plane_state);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_fb.h b/drivers/gpu/drm/i915/display/intel_fb.h
index 8c15f4c9561b..59f8715e0bda 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.h
+++ b/drivers/gpu/drm/i915/display/intel_fb.h
@@ -10,11 +10,17 @@
 
 struct drm_framebuffer;
 
+struct drm_i915_private;
+
+struct i915_ggtt_view;
+
 struct intel_plane_state;
 
 bool is_ccs_plane(const struct drm_framebuffer *fb, int plane);
 bool is_gen12_ccs_plane(const struct drm_framebuffer *fb, int plane);
 bool is_gen12_ccs_cc_plane(const struct drm_framebuffer *fb, int plane);
+bool is_aux_plane(const struct drm_framebuffer *fb, int plane);
+bool is_semiplanar_uv_plane(const struct drm_framebuffer *fb, int color_plane);
 
 bool is_surface_linear(const struct drm_framebuffer *fb, int color_plane);
 
@@ -24,4 +30,29 @@ int skl_main_to_aux_plane(const struct drm_framebuffer *fb, int main_plane);
 
 int intel_plane_check_stride(const struct intel_plane_state *plane_state);
 
+unsigned int intel_tile_size(const struct drm_i915_private *dev_priv);
+unsigned int intel_tile_height(const struct drm_framebuffer *fb, int color_plane);
+unsigned int intel_tile_row_size(const struct drm_framebuffer *fb, int color_plane);
+
+unsigned int intel_cursor_alignment(const struct drm_i915_private *dev_priv);
+
+void intel_fb_plane_get_subsampling(int *hsub, int *vsub,
+				    const struct drm_framebuffer *fb,
+				    int color_plane);
+
+u32 intel_plane_adjust_aligned_offset(int *x, int *y,
+				      const struct intel_plane_state *state,
+				      int color_plane,
+				      u32 old_offset, u32 new_offset);
+u32 intel_plane_compute_aligned_offset(int *x, int *y,
+				       const struct intel_plane_state *state,
+				       int color_plane);
+
+int intel_fb_pitch(const struct drm_framebuffer *fb, int color_plane, unsigned int rotation);
+
+int intel_fill_fb_info(struct drm_i915_private *dev_priv, struct drm_framebuffer *fb);
+void intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, const struct drm_framebuffer *fb,
+			     unsigned int rotation);
+int intel_plane_compute_gtt(struct intel_plane_state *plane_state);
+
 #endif /* __INTEL_FB_H__ */