drm/{i915,xe}/panic: pass struct intel_panic to intel_panic_setup()

Reduce the struct intel_framebuffer usage within the panic
implementation.

Cc: Jocelyn Falempe <[e-mail]>
Cc: Maarten Lankhorst <[e-mail]>
Signed-off-by: Jani Nikula <[e-mail]>
Reviewed-by: Jocelyn Falempe <[e-mail]>
Link: https://lore.kernel.org/r/2a0[e-mail]

drivers/gpu/drm/i915/display/intel_panic.c

···
 // SPDX-License-Identifier: MIT
 /* Copyright © 2025 Intel Corporation */
 
+#include <drm/drm_panic.h>
+
 #include "gem/i915_gem_object.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
 #include "intel_panic.h"
 
 struct intel_panic *intel_panic_alloc(void)
···
 	return i915_gem_object_alloc_panic();
 }
 
-int intel_panic_setup(struct drm_scanout_buffer *sb)
+int intel_panic_setup(struct intel_panic *panic, struct drm_scanout_buffer *sb)
 {
-	return i915_gem_object_panic_setup(sb);
+	struct intel_framebuffer *fb = sb->private;
+	struct drm_gem_object *obj = intel_fb_bo(&fb->base);
+
+	return i915_gem_object_panic_setup(panic, sb, obj, fb->panic_tiling);
 }
 
 void intel_panic_finish(struct intel_panic *panic)

drivers/gpu/drm/i915/display/intel_panic.h

···
 struct intel_panic;
 
 struct intel_panic *intel_panic_alloc(void);
-int intel_panic_setup(struct drm_scanout_buffer *sb);
+int intel_panic_setup(struct intel_panic *panic, struct drm_scanout_buffer *sb);
 void intel_panic_finish(struct intel_panic *panic);
 
 #endif /* __INTEL_PANIC_H__ */

drivers/gpu/drm/i915/display/intel_plane.c

···
 				return -EOPNOTSUPP;
 		}
 		sb->private = intel_fb;
-		ret = intel_panic_setup(sb);
+		ret = intel_panic_setup(intel_fb->panic, sb);
 		if (ret)
 			return ret;
 	}

drivers/gpu/drm/i915/gem/i915_gem_object.h

···
 int i915_gem_object_truncate(struct drm_i915_gem_object *obj);
 
 struct intel_panic *i915_gem_object_alloc_panic(void);
-int i915_gem_object_panic_setup(struct drm_scanout_buffer *sb);
+int i915_gem_object_panic_setup(struct intel_panic *panic, struct drm_scanout_buffer *sb,
+				struct drm_gem_object *_obj, bool panic_tiling);
 void i915_gem_object_panic_finish(struct intel_panic *panic);
 
 /**

drivers/gpu/drm/i915/gem/i915_gem_pages.c

···
  * Use current vaddr if it exists, or setup a list of pages.
  * pfn is not supported yet.
  */
-int i915_gem_object_panic_setup(struct drm_scanout_buffer *sb)
+int i915_gem_object_panic_setup(struct intel_panic *panic, struct drm_scanout_buffer *sb,
+				struct drm_gem_object *_obj, bool panic_tiling)
 {
 	enum i915_map_type has_type;
-	struct intel_framebuffer *fb = (struct intel_framebuffer *)sb->private;
-	struct intel_panic *panic = fb->panic;
-	struct drm_i915_gem_object *obj = to_intel_bo(intel_fb_bo(&fb->base));
+	struct drm_i915_gem_object *obj = to_intel_bo(_obj);
 	void *ptr;
 
 	ptr = page_unpack_bits(obj->mm.mapping, &has_type);
···
 		else
 			iosys_map_set_vaddr(&sb->map[0], ptr);
 
-		if (fb->panic_tiling)
+		if (panic_tiling)
 			sb->set_pixel = i915_gem_object_panic_map_set_pixel;
 		return 0;
 	}

drivers/gpu/drm/xe/display/xe_panic.c

···
 	return panic;
 }
 
-int intel_panic_setup(struct drm_scanout_buffer *sb)
+int intel_panic_setup(struct intel_panic *panic, struct drm_scanout_buffer *sb)
 {
-	struct intel_framebuffer *fb = (struct intel_framebuffer *)sb->private;
-	struct intel_panic *panic = fb->panic;
-
 	panic->page = -1;
 	sb->set_pixel = xe_panic_page_set_pixel;
 	return 0;