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The MSMON_MBWU_CAPTURE characteristics are:
AccessesMSMON_MBWU_CAPTURE is a 32-bit read-write register that accesses the captured MSMON_MBWU monitor instance selected by MSMON_CFG_MON_SEL. MSMON_MBWU_CAPTURE_s is the Secure memory bandwidth usage monitor capture instance selected by the Secure instance of MSMON_CFG_MON_SEL. MSMON_MBWU_CAPTURE_ns is the Non-secure memory bandwidth usage monitor capture instance selected by the Non-secure instance of MSMON_CFG_MON_SEL.
The power domain of MSMON_MBWU_CAPTURE is IMPLEMENTATION DEFINED.
This register is present only when MPAMF_IDR.HAS_MSMON == 1, MPAMF_MSMON_IDR.MSMON_MBWU == 1 and MPAMF_MBWUMON_IDR.HAS_CAPTURE == 1. Otherwise, direct accesses to MSMON_MBWU_CAPTURE are RES0.
MSMON_MBWU_CAPTURE is a 32-bit register.
The MSMON_MBWU_CAPTURE bit assignments are:
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
NRDY | VALUE |
Not Ready. The captured NRDY bit from the corresponding instance of MSMON_MBWU. This bit indicates whether the captured monitor value has possibly inaccurate data.
NRDY | Meaning |
---|---|
0b0 | The captured monitor was not ready and the contents of the VALUE field might be inaccurate or otherwise not represent the actual memory bandwidth usage. |
0b1 | The captured monitor was ready and the VALUE fields is accurate. |
Captured memory bandwidth usage counter value if NRDY == 0. Invalid if NRDY == 1.
VALUE is the captured VALUE field from the corresponding instance of MSMON_MBWU, the count of bytes transferred since the monitor was last reset that meet the criteria set in MSMON_CFG_MBWU_FLT and MSMON_CFG_MBWU_CTL for the monitor instance selected by MSMON_CFG_MON_SEL.
VALUE captures the MSMON_MBWU.VALUE and preserves any scaling that had been performed on the VALUE field in that register.
This register is within the MPAM feature page memory frames. In a system that supports Secure and Non-secure memory maps, there must be both Secure and Non-secure MPAM feature pages.
MSMON_MBWU_CAPTURE_s must be accessible from the Secure MPAM feature page. MSMON_MBWU_CAPTURE_ns must be accessible from the Non-secure MPAM feature page.
MSMON_MBWU_CAPTURE_s and MSMON_MBWU_CAPTURE_ns must be separate registers. The Secure instance (MSMON_MBWU_CAPTURE_s) accesses the captured memory bandwidth usage monitor used for Secure PARTIDs, and the Non-secure instance (MSMON_MBWU_CAPTURE_ns) accesses the captured memory bandwidth usage monitor used for Non-secure PARTIDs.
Component | Frame | Offset | Instance |
---|---|---|---|
MPAM | MPAMF_BASE_s | 0x0868 | MSMON_MBWU_CAPTURE_s |
Accesses on this interface are RW.
Component | Frame | Offset | Instance |
---|---|---|---|
MPAM | MPAMF_BASE_ns | 0x0868 | MSMON_MBWU_CAPTURE_ns |
Accesses on this interface are RW.
1327/1209/2019 1518:1348; 391b5248b29fb2f001ef74792eaacbd6fc72f2116134483bd14dc8c12a99c984cbfe3431cc1c9707
Copyright © 2010-2019 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.
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