diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h
index a9bf9c784b7c578cd747c1d84151477fb3201cea..b64f810189ff366fc2d6d3051722c35f42eaf8d9 100644
--- a/drivers/gpu/drm/xe/xe_device_types.h
+++ b/drivers/gpu/drm/xe/xe_device_types.h
@@ -200,6 +200,8 @@ struct xe_device {
 		const char *graphics_name;
 		/** @media_name: media IP name */
 		const char *media_name;
+		/** @tile_mmio_ext_size: size of MMIO extension space, per-tile */
+		u32 tile_mmio_ext_size;
 		/** @graphics_verx100: graphics IP version */
 		u32 graphics_verx100;
 		/** @media_verx100: media IP version */
@@ -245,6 +247,8 @@ struct xe_device {
 		u8 has_range_tlb_invalidation:1;
 		/** @bypass_mtcfg: Bypass Multi-Tile configuration from MTCFG register */
 		u8 bypass_mtcfg:1;
+		/** @supports_mmio_ext: supports MMIO extension/s */
+		u8 supports_mmio_ext:1;
 	} info;
 
 	/** @irq: device interrupt state */
diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c
index f8e813e174580f7f3fd12e76a24e94f8ad1993a4..8161982796dd2ef6ae9d934d158b6e031c5ef9ba 100644
--- a/drivers/gpu/drm/xe/xe_pci.c
+++ b/drivers/gpu/drm/xe/xe_pci.c
@@ -57,6 +57,7 @@ struct xe_device_desc {
 	u8 is_dgfx:1;
 	u8 has_llc:1;
 	u8 bypass_mtcfg:1;
+	u8 supports_mmio_ext:1;
 };
 
 #define PLATFORM(x)		\
@@ -555,6 +556,8 @@ static int xe_info_init(struct xe_device *xe,
 	xe->info.media_name = media_desc ? media_desc->name : "none";
 	xe->info.has_llc = desc->has_llc;
 	xe->info.bypass_mtcfg = desc->bypass_mtcfg;
+	xe->info.supports_mmio_ext = desc->supports_mmio_ext;
+	xe->info.tile_mmio_ext_size = graphics_desc->tile_mmio_ext_size;
 
 	xe->info.dma_mask_size = graphics_desc->dma_mask_size;
 	xe->info.vram_flags = graphics_desc->vram_flags;
diff --git a/drivers/gpu/drm/xe/xe_pci_types.h b/drivers/gpu/drm/xe/xe_pci_types.h
index bd0b0d87413e600891e69beb77f593b673a324f1..dd3546ba6f9053f8560362ba8804e5a0efdedc53 100644
--- a/drivers/gpu/drm/xe/xe_pci_types.h
+++ b/drivers/gpu/drm/xe/xe_pci_types.h
@@ -20,6 +20,8 @@ struct xe_graphics_desc {
 
 	u64 hw_engine_mask;	/* hardware engines provided by graphics IP */
 
+	u32 tile_mmio_ext_size; /* size of MMIO extension space, per-tile */
+
 	u8 max_remote_tiles:2;
 
 	u8 has_asid:1;