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# MSMON_CFG_MON_SEL, MPAM Partion Configuration Selection Register

The MSMON_CFG_MON_SEL characteristics are:

## Purpose

Selects a monitor to access the configuration or counter.

Note

Different performance monitoring features within a MSC could have different numbers of monitors. See the feature's NUM_MON field in its ID register. Thus, a monitor out-of-bounds error might be signaled when an MSMON_CFG register is accessed because the value in MSMON_CFG_MON_SEL.MON_SEL is too large for the particular monitoring feature.

To configure a monitor, set MON_SEL in this register to the index of the monitor chosen, then write to the MSMON_CFG_x register to set the configuration of the monitor. At a later time, read the monitor register (for example MSMON_MBWU) to get the value of the monitor.

## Configuration

The power domain of MSMON_CFG_MON_SEL is IMPLEMENTATION DEFINED.

This register is present only when MPAMF_IDR.HAS_MSMON == 1 or MPAMF_IDR.HAS_IMPL_IDR == 1. Otherwise, direct accesses to MSMON_CFG_MON_SEL are IMPLEMENTATION DEFINED.

## Attributes

MSMON_CFG_MON_SEL is a 32-bit register.

## Field descriptions

The MSMON_CFG_MON_SEL 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
RES0 | MON_SEL

#### Bits [31:8]

Reserved, RES0.

#### MON_SEL, bits [7:0]

Selects the monitor to configure or read.

Reads and writes to other MSMON registers are indexed by MON_SEL and by the NS bit used to access MSMON_CFG_MON_SEL to access the configuration for a single monitor.

## Accessing the MSMON_CFG_MON_SEL

This register is part of the MPAMF_BASE memory frame. In a system that supports Secure and Non-secure memory maps, the MPAMF_BASE frame must be accessible in both Secure and Non-secure memory address maps.

MSMON_CFG_MON_SEL must be accessible from the Non-secure and Secure address maps.

MSMON_CFG_MON_SEL must be banked for the Secure and Non-secure address maps. The Secure instance is used with accesses to other MSMON registers to configure monitors for Secure PARTIDs, and the Non-secure instance is used with accesses to other MSMON registers to configure monitors for Non-secure PARTIDs.

#### MSMON_CFG_MON_SEL can be accessed through the memory-mapped interfaces:

Component | Frame | Offset | Instance
--- | --- | --- | ---
MPAM.any | MPAMF_BASE_s | 0x0800 | MSMON_CFG_MON_SEL_s

Access on this interface is RW.

Component | Frame | Offset | Instance
--- | --- | --- | ---
MPAM.any | MPAMF_BASE_ns | 0x0800 | MSMON_CFG_MON_SEL_ns

Access on this interface is RW.

AArch32 Registers | AArch64 Registers | AArch32 Instructions | AArch64 Instructions | Index by Encoding | External Registers | External Registers by Offset | Registers by Functional Group | Proprietary Notice

15/04/2019 16:47; 8c23526ba8a13a72aada4137daf3e3977b49036e

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