1 /* SPDX-License-Identifier: MIT */
3 * Copyright © 2019 Intel Corporation
6 #ifndef __INTEL_SSEU_H__
7 #define __INTEL_SSEU_H__
9 #include <linux/types.h>
10 #include <linux/kernel.h>
14 struct drm_i915_private;
18 #define GEN_MAX_SLICES (6) /* CNL upper bound */
19 #define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
20 #define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
21 #define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
22 #define GEN_MAX_EUS (16) /* TGL upper bound */
23 #define GEN_MAX_EU_STRIDE GEN_SSEU_STRIDE(GEN_MAX_EUS)
25 struct sseu_dev_info {
27 u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
28 u8 eu_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICES * GEN_MAX_EU_STRIDE];
32 /* For each slice, which subslice(s) has(have) 7 EUs (bitfield)? */
41 u8 max_eus_per_subslice;
48 * Powergating configuration for a particular (context,engine).
53 u8 min_eus_per_subslice;
54 u8 max_eus_per_subslice;
57 static inline struct intel_sseu
58 intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
60 struct intel_sseu value = {
61 .slice_mask = sseu->slice_mask,
62 .subslice_mask = sseu->subslice_mask[0],
63 .min_eus_per_subslice = sseu->max_eus_per_subslice,
64 .max_eus_per_subslice = sseu->max_eus_per_subslice,
71 intel_sseu_has_subslice(const struct sseu_dev_info *sseu, int slice,
75 int ss_idx = subslice / BITS_PER_BYTE;
77 GEM_BUG_ON(ss_idx >= sseu->ss_stride);
79 mask = sseu->subslice_mask[slice * sseu->ss_stride + ss_idx];
81 return mask & BIT(subslice % BITS_PER_BYTE);
84 void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
85 u8 max_subslices, u8 max_eus_per_subslice);
88 intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
91 intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
93 u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice);
95 void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
98 void intel_sseu_info_init(struct intel_gt *gt);
100 u32 intel_sseu_make_rpcs(struct intel_gt *gt,
101 const struct intel_sseu *req_sseu);
103 void intel_sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p);
104 void intel_sseu_print_topology(const struct sseu_dev_info *sseu,
105 struct drm_printer *p);
107 #endif /* __INTEL_SSEU_H__ */