| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Copyright (C) 2025 Arm Ltd. |
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| 4 | * Based on arch/x86/kernel/cpu/resctrl/internal.h |
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| 5 | */ |
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| 6 | |
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| 7 | #ifndef __LINUX_RESCTRL_TYPES_H |
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| 8 | #define __LINUX_RESCTRL_TYPES_H |
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| 9 | |
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| 10 | #define MAX_MBA_BW 100u |
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| 11 | #define MBM_OVERFLOW_INTERVAL 1000 |
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| 12 | |
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| 13 | /* Reads to Local DRAM Memory */ |
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| 14 | #define READS_TO_LOCAL_MEM BIT(0) |
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| 15 | |
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| 16 | /* Reads to Remote DRAM Memory */ |
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| 17 | #define READS_TO_REMOTE_MEM BIT(1) |
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| 18 | |
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| 19 | /* Non-Temporal Writes to Local Memory */ |
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| 20 | #define NON_TEMP_WRITE_TO_LOCAL_MEM BIT(2) |
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| 21 | |
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| 22 | /* Non-Temporal Writes to Remote Memory */ |
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| 23 | #define NON_TEMP_WRITE_TO_REMOTE_MEM BIT(3) |
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| 24 | |
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| 25 | /* Reads to Local Memory the system identifies as "Slow Memory" */ |
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| 26 | #define READS_TO_LOCAL_S_MEM BIT(4) |
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| 27 | |
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| 28 | /* Reads to Remote Memory the system identifies as "Slow Memory" */ |
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| 29 | #define READS_TO_REMOTE_S_MEM BIT(5) |
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| 30 | |
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| 31 | /* Dirty Victims to All Types of Memory */ |
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| 32 | #define DIRTY_VICTIMS_TO_ALL_MEM BIT(6) |
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| 33 | |
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| 34 | /* Max event bits supported */ |
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| 35 | #define MAX_EVT_CONFIG_BITS GENMASK(6, 0) |
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| 36 | |
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| 37 | /* Number of memory transactions that an MBM event can be configured with */ |
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| 38 | #define NUM_MBM_TRANSACTIONS 7 |
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| 39 | |
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| 40 | /* Event IDs */ |
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| 41 | enum resctrl_event_id { |
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| 42 | /* Must match value of first event below */ |
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| 43 | QOS_FIRST_EVENT = 0x01, |
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| 44 | |
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| 45 | /* |
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| 46 | * These values match those used to program IA32_QM_EVTSEL before |
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| 47 | * reading IA32_QM_CTR on RDT systems. |
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| 48 | */ |
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| 49 | QOS_L3_OCCUP_EVENT_ID = 0x01, |
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| 50 | QOS_L3_MBM_TOTAL_EVENT_ID = 0x02, |
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| 51 | QOS_L3_MBM_LOCAL_EVENT_ID = 0x03, |
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| 52 | |
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| 53 | /* Must be the last */ |
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| 54 | QOS_NUM_EVENTS, |
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| 55 | }; |
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| 56 | |
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| 57 | #define QOS_NUM_L3_MBM_EVENTS (QOS_L3_MBM_LOCAL_EVENT_ID - QOS_L3_MBM_TOTAL_EVENT_ID + 1) |
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| 58 | #define MBM_STATE_IDX(evt) ((evt) - QOS_L3_MBM_TOTAL_EVENT_ID) |
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| 59 | |
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| 60 | #endif /* __LINUX_RESCTRL_TYPES_H */ |
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| 61 | |
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