MSMON_OFLOW_MSI_DATA, MPAM Monitor Overflow MSI Write Data Register

The MSMON_OFLOW_MSI_DATA characteristics are:

Purpose

MSMON_OFLOW_MSI_DATA is a 32-bit read/write register for the MPAM monitor overflow MSI data.

MSMON_OFLOW_MSI_DATA_s is the data for the MSI write for monitor overflow from Secure monitor instances. MSMON_OFLOW_MSI_DATA_ns is the data for the MSI writes for monitor overflow interrupts from Non-secure monitor instances. MSMON_OFLOW_MSI_DATA_rt is the data for the MSI write for monitor overflow from Root monitor instances. MSMON_OFLOW_MSI_DATA_rl is the data for the MSI writes for monitor overflow interrupts from Realm monitor instances.

Configuration

The power domain of MSMON_OFLOW_MSI_DATA is IMPLEMENTATION DEFINED.

This register is present only when FEAT_MPAMv1p1 is implemented and MPAMF_MSMON_IDR.HAS_OFLW_MSI == 1. Otherwise, direct accesses to MSMON_OFLOW_MSI_DATA are RES0.

MSMON_OFLOW_MSI_ADDR_L, MSMON_OFLOW_MSI_ADDR_H, MSMON_OFLOW_MSI_ATTR, MSMON_OFLOW_MSI_DATA, and MSMON_OFLOW_MSI_MPAM must all be implemented to support MSI writes for monitor overflow interrupts.

The power and reset domain of each MSC component is specific to that component.

Attributes

MSMON_OFLOW_MSI_DATA is a 32-bit register.

Field descriptions

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
MSI_DATA

MSI_DATA, bits [31:0]

MSI write data word.

Accessing MSMON_OFLOW_MSI_DATA

This register is within the MPAM feature page memory frames.

In a system that supports Secure, Non-secure, Root, and Realm memory maps, there must be MPAM feature pages in all four address maps:

MSMON_OFLOW_MSI_DATA_s must only be accessible from the Secure MPAM feature page.
MSMON_OFLOW_MSI_DATA_ns must only be accessible from the Non-secure MPAM feature page.
MSMON_OFLOW_MSI_DATA_rt must only be accessible from the Root MPAM feature page.
MSMON_OFLOW_MSI_DATA_rl must only be accessible from the Realm MPAM feature page.

MSMON_OFLOW_MSI_DATA_s, MSMON_OFLOW_MSI_DATA_ns, MSMON_OFLOW_MSI_DATA_rt, and MSMON_OFLOW_MSI_DATA_rl must be separate registers:

The Secure instance (MSMON_OFLOW_MSI_DATA_s) accesses the monitor overflow MSI write data of Secure monitors.
The Non-secure instance (MSMON_OFLOW_MSI_DATA_ns) accesses the monitor overflow MSI write data of Non-secure monitors.
The Root instance (MSMON_OFLOW_MSI_DATA_rt) accesses the monitor overflow MSI write data of Root monitors.
The Realm instance (MSMON_OFLOW_MSI_DATA_rl) accesses the monitor overflow MSI write data of Realm monitors.

MSMON_OFLOW_MSI_DATA can be accessed through the memory-mapped interfaces:

Component	Frame	Offset	Instance
MPAM	MPAMF_BASE_s	0x08E8	MSMON_OFLOW_MSI_DATA_s

Accesses on this interface are RW.

Component	Frame	Offset	Instance
MPAM	MPAMF_BASE_ns	0x08E8	MSMON_OFLOW_MSI_DATA_ns

Accesses on this interface are RW.

Component	Frame	Offset	Instance
MPAM	MPAMF_BASE_rt	0x08E8	MSMON_OFLOW_MSI_DATA_rt

When FEAT_RME is implemented, accesses on this interface are RW.

Component	Frame	Offset	Instance
MPAM	MPAMF_BASE_rl	0x08E8	MSMON_OFLOW_MSI_DATA_rl

When FEAT_RME is implemented, accesses on this interface are RW.

26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6