DO NOT MERGE: drm/asahi: Add an experimental UAPI extension

This lets us play around with unknown stuff from userspace, without
having to commit to adding it to the UAPI (or knowing whether it's safe
to expose at all).

Signed-off-by: Asahi Lina <[email protected]>

Author: asahilina

include/uapi/drm/asahi_drm.h

@@ -405,6 +405,70 @@ struct drm_asahi_cmd_render {
 	__u32 isp_bgobjvals;
 };
 
+#define ASAHI_RENDER_UNK_UNK1			(1UL << 0)
+#define ASAHI_RENDER_UNK_SET_TILE_CONFIG	(1UL << 1)
+#define ASAHI_RENDER_UNK_SET_UTILE_CONFIG	(1UL << 2)
+#define ASAHI_RENDER_UNK_SET_AUX_FB_UNK		(1UL << 3)
+#define ASAHI_RENDER_UNK_SET_G14_UNK		(1UL << 4)
+
+#define ASAHI_RENDER_UNK_SET_FRG_UNK_140	(1UL << 20)
+#define ASAHI_RENDER_UNK_SET_FRG_UNK_158	(1UL << 21)
+#define ASAHI_RENDER_UNK_SET_FRG_TILECFG	(1UL << 22)
+#define ASAHI_RENDER_UNK_SET_LOAD_BGOBJVALS	(1UL << 23)
+#define ASAHI_RENDER_UNK_SET_FRG_UNK_38		(1UL << 24)
+#define ASAHI_RENDER_UNK_SET_FRG_UNK_3C		(1UL << 25)
+#define ASAHI_RENDER_UNK_SET_FRG_UNK_40		(1UL << 26)
+#define ASAHI_RENDER_UNK_SET_RELOAD_ZLSCTRL	(1UL << 27)
+#define ASAHI_RENDER_UNK_SET_UNK_BUF_10		(1UL << 28)
+#define ASAHI_RENDER_UNK_SET_FRG_UNK_MASK	(1UL << 29)
+
+#define ASAHI_RENDER_UNK_SET_IOGPU_UNK54	(1UL << 40)
+#define ASAHI_RENDER_UNK_SET_IOGPU_UNK56	(1UL << 41)
+#define ASAHI_RENDER_UNK_SET_TILING_CONTROL	(1UL << 42)
+#define ASAHI_RENDER_UNK_SET_TILING_CONTROL_2	(1UL << 43)
+#define ASAHI_RENDER_UNK_SET_VTX_UNK_F0		(1UL << 44)
+#define ASAHI_RENDER_UNK_SET_VTX_UNK_F8		(1UL << 45)
+#define ASAHI_RENDER_UNK_SET_VTX_UNK_118	(1UL << 46)
+#define ASAHI_RENDER_UNK_SET_VTX_UNK_MASK	(1UL << 47)
+
+#define ASAHI_RENDER_EXT_UNKNOWNS	0xff00
+
+/* XXX: Do not upstream this struct */
+struct drm_asahi_cmd_render_unknowns {
+	/** @type: Type ID of this extension */
+	__u32 type;
+	__u32 pad;
+	/** @next: Pointer to the next extension struct, if any */
+	__u64 next;
+
+	__u64 flags;
+
+	__u64 tile_config;
+	__u64 utile_config;
+
+	__u64 aux_fb_unk;
+	__u64 g14_unk;
+	__u64 frg_unk_140;
+	__u64 frg_unk_158;
+	__u64 frg_tilecfg;
+	__u64 load_bgobjvals;
+	__u64 frg_unk_38;
+	__u64 frg_unk_3c;
+	__u64 frg_unk_40;
+	__u64 reload_zlsctrl;
+	__u64 unk_buf_10;
+	__u64 frg_unk_mask;
+
+	__u64 iogpu_unk54;
+	__u64 iogpu_unk56;
+	__u64 tiling_control;
+	__u64 tiling_control_2;
+	__u64 vtx_unk_f0;
+	__u64 vtx_unk_f8;
+	__u64 vtx_unk_118;
+	__u64 vtx_unk_mask;
+};
+
 struct drm_asahi_cmd_compute {
 	__u64 flags;
 
@@ -415,10 +479,10 @@ struct drm_asahi_cmd_compute {
 	__u32 attachment_count;
 	__u32 pad;
 
-	__u64 buffer_descriptor;
+	__u64 helper_arg;
 
 	__u32 buffer_descriptor_size; /* ? */
-	__u32 ctx_switch_prog;
+	__u32 helper_program;
 
 	__u32 encoder_id;
 	__u32 cmd_id;