(old) htmldiff from-(new)

MSMON_CSU_CAPTURE, MPAM Cache Storage Usage Monitor Capture Register

The MSMON_CSU_CAPTURE characteristics are:

Purpose

MSMON_CSU_CAPTURE is a 32-bit read-write register that accesses the captured MSMON_CSU monitor instance selected by MSMON_CFG_MON_SEL. MSMON_CSU_CAPTURE_s is the Secure cache storage usage monitor capture instance selected by the Secure instance of MSMON_CFG_MON_SEL. MSMON_CSU_CAPTURE_ns is the Non-secure cache storage usage monitor capture instance selected by the Non-secure instance of MSMON_CFG_MON_SEL.

If MPAMF_IDR.HAS_RIS is 1, the monitor instance capture register accessed is for the resource instance currently selected by MSMON_CFG_MON_SEL.RIS and the monitor instance of that resource instance selected by MSMON_CFG_MON_SEL.MON_SEL.

Configuration

The power domain of MSMON_CSU_CAPTURE is IMPLEMENTATION DEFINED.

This register is present only when MPAMF_IDR.HAS_MSMON == 1, MPAMF_MSMON_IDR.MSMON_CSU == 1 and MPAMF_CSUMON_IDR.HAS_CAPTURE == 1. Otherwise, direct accesses to MSMON_CSU_CAPTURE are RES0.

Attributes

MSMON_CSU_CAPTURE is a 32-bit register.

Field descriptions

The MSMON_CSU_CAPTURE bit assignments are:

313029282726252423222120191817161514131211109876543210
NRDYVALUE

NRDY, bit [31]

Not Ready. Indicates whether the captured monitor value has possibly inaccurate data.

NRDYMeaning
0b0

The captured monitor instance was not ready and the MSMON_CSU_CAPTURE.VALUEcontents of the VALUE field ismight accurate.be inaccurate or otherwise not represent the actual cache storage usage.

0b1

The captured monitor instance was not ready and the contentsVALUE offields theis MSMON_CSU_CAPTURE.VALUE field might be inaccurate or otherwise not represent the actual cache storage usage.accurate.

VALUE, bits [30:0]

Captured cache storage usage measurementvalue if MSMON_CSU_CAPTURE.NRDYNRDY is== 0. Invalid if MSMON_CSU_CAPTURE.NRDYNRDY is== 1.

VALUE is the captured cache storage usage measurement in bytes meeting the criteria set in MSMON_CFG_CSU_FLT and MSMON_CFG_CSU_CTL for the monitor instance selected by MSMON_CFG_MON_SEL. MSMON_CFG_CSU_FLT and MSMON_CFG_CSU_CTL for the monitor instance selected by MSMON_CFG_MON_SEL.

Accessing the MSMON_CSU_CAPTURE

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_CSU_CAPTURE_s must be accessible from the Secure MPAM feature page. MSMON_CSU_CAPTURE_ns must be accessible from the Non-secure MPAM feature page.

MSMON_CSU_CAPTURE_s and MSMON_CSU_CAPTURE_ns must be separate registers. The Secure instance (MSMON_CSU_CAPTURE_s) accesses the captured cache storage usage monitor used for Secure PARTIDs, and the Non-secure instance (MSMON_CSU_CAPTURE_ns) accesses the captured cache storage usage monitor used for Non-secure PARTIDs.

When RIS is implemented, reads and writes to MSMON_CSU_CAPTURE access the monitor instance for the cache resource instance selected by MSMON_CFG_MON_SEL.RIS and the cache storage usage monitor instance selected by MSMON_CFG_MON_SEL.MON_SEL.

When RIS is not implemented, reads and writes to MSMON_CSU_CAPTURE access the monitor instance for the cache storage usage monitor instance selected by MSMON_CFG_MON_SEL.MON_SEL.

MSMON_CSU_CAPTURE can be accessed through the memory-mapped interfaces:

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_s0x0848MSMON_CSU_CAPTURE_s

Accesses on this interface are RW.

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_ns0x0848MSMON_CSU_CAPTURE_ns

Accesses on this interface are RW.




0114/0704/2020 1520:5709; 80324f0b9997bede489cc15ad1565345720bcd2adff0d3e465311dd9ce541b6a1e1d6c05a0668645

Copyright © 2010-2020 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.

(old) htmldiff from-(new)