2 * SPDX-License-Identifier: MIT
4 * Copyright © 2019 Intel Corporation
7 #ifndef __INTEL_SSEU_H__
8 #define __INTEL_SSEU_H__
10 #include <linux/types.h>
11 #include <linux/kernel.h>
13 struct drm_i915_private;
15 #define GEN_MAX_SLICES (6) /* CNL upper bound */
16 #define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
17 #define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
19 struct sseu_dev_info {
21 u8 subslice_mask[GEN_MAX_SLICES];
25 /* For each slice, which subslice(s) has(have) 7 EUs (bitfield)? */
34 u8 max_eus_per_subslice;
36 /* We don't have more than 8 eus per subslice at the moment and as we
37 * store eus enabled using bits, no need to multiply by eus per
40 u8 eu_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICES];
44 * Powergating configuration for a particular (context,engine).
49 u8 min_eus_per_subslice;
50 u8 max_eus_per_subslice;
53 static inline struct intel_sseu
54 intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
56 struct intel_sseu value = {
57 .slice_mask = sseu->slice_mask,
58 .subslice_mask = sseu->subslice_mask[0],
59 .min_eus_per_subslice = sseu->max_eus_per_subslice,
60 .max_eus_per_subslice = sseu->max_eus_per_subslice,
67 intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
70 intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
72 u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
73 const struct intel_sseu *req_sseu);
75 #endif /* __INTEL_SSEU_H__ */