1/* SPDX-License-Identifier: MIT */
 2/*
 3 * Copyright © 2020,2021 Intel Corporation
 4 */
 5
 6#ifndef __INTEL_STEP_H__
 7#define __INTEL_STEP_H__
 8
 9#include <linux/types.h>
10
11struct drm_i915_private;
12
13struct intel_step_info {
14	/*
15	 * It is expected to have 4 number steps per letter. Deviation from
16	 * the expectation breaks gmd_to_intel_step().
17	 */
18	u8 graphics_step;	/* Represents the compute tile on Xe_HPC */
19	u8 media_step;
20};
21
22#define STEP_ENUM_VAL(name)  STEP_##name,
23
24#define STEP_NAME_LIST(func)		\
25	func(A0)			\
26	func(A1)			\
27	func(A2)			\
28	func(A3)			\
29	func(B0)			\
30	func(B1)			\
31	func(B2)			\
32	func(B3)			\
33	func(C0)			\
34	func(C1)			\
35	func(C2)			\
36	func(C3)			\
37	func(D0)			\
38	func(D1)			\
39	func(D2)			\
40	func(D3)			\
41	func(E0)			\
42	func(E1)			\
43	func(E2)			\
44	func(E3)			\
45	func(F0)			\
46	func(F1)			\
47	func(F2)			\
48	func(F3)			\
49	func(G0)			\
50	func(G1)			\
51	func(G2)			\
52	func(G3)			\
53	func(H0)			\
54	func(H1)			\
55	func(H2)			\
56	func(H3)			\
57	func(I0)			\
58	func(I1)			\
59	func(I2)			\
60	func(I3)			\
61	func(J0)			\
62	func(J1)			\
63	func(J2)			\
64	func(J3)
65
66/*
67 * Symbolic steppings that do not match the hardware. These are valid both as gt
68 * and display steppings as symbolic names.
69 */
70enum intel_step {
71	STEP_NONE = 0,
72	STEP_NAME_LIST(STEP_ENUM_VAL)
73	STEP_FUTURE,
74	STEP_FOREVER,
75};
76
77void intel_step_init(struct drm_i915_private *i915);
78const char *intel_step_name(enum intel_step step);
79
80#endif /* __INTEL_STEP_H__ */