1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2023 Intel Corporation 4 */ 5 6 #ifndef _XE_PAT_H_ 7 #define _XE_PAT_H_ 8 9 #include <linux/types.h> 10 11 struct drm_printer; 12 struct xe_device; 13 struct xe_gt; 14 15 /** 16 * struct xe_pat_table_entry - The pat_index encoding and other meta information. 17 */ 18 struct xe_pat_table_entry { 19 /** 20 * @value: The platform specific value encoding the various memory 21 * attributes (this maps to some fixed pat_index). So things like 22 * caching, coherency, compression etc can be encoded here. 23 */ 24 u32 value; 25 26 /** 27 * @coh_mode: The GPU coherency mode that @value maps to. 28 */ 29 #define XE_COH_NONE 1 30 #define XE_COH_AT_LEAST_1WAY 2 31 u16 coh_mode; 32 }; 33 34 /** 35 * xe_pat_init_early - SW initialization, setting up data based on device 36 * @xe: xe device 37 */ 38 void xe_pat_init_early(struct xe_device *xe); 39 40 /** 41 * xe_pat_init - Program HW PAT table 42 * @gt: GT structure 43 */ 44 void xe_pat_init(struct xe_gt *gt); 45 46 /** 47 * xe_pat_dump - Dump PAT table 48 * @gt: GT structure 49 * @p: Printer to dump info to 50 */ 51 void xe_pat_dump(struct xe_gt *gt, struct drm_printer *p); 52 53 /** 54 * xe_pat_index_get_coh_mode - Extract the coherency mode for the given 55 * pat_index. 56 * @xe: xe device 57 * @pat_index: The pat_index to query 58 */ 59 u16 xe_pat_index_get_coh_mode(struct xe_device *xe, u16 pat_index); 60 61 #endif 62