The MPAMCFG_MBW_WINWD characteristics are:
MPAMCFG_MBW_WINWD is a 32-bit register that shows and sets the value of the window width for the PARTID in MPAMCFG_PART_SEL. MPAMCFG_MBW_WINWD_s reads and controls the bandwidth control window width for the Secure PARTID selected by the Secure instance of MPAMCFG_PART_SEL. MPAMCFG_MBW_WINWD_ns reads and controls the bandwidth control window for the Non-secure PARTID selected by the Non-secure instance of MPAMCFG_PART_SEL.
MPAMCFG_MBW_WINWD is read-only if MPAMF_MBW_IDR.WINDWR == 0, and the window width is set by the hardware, even if variable.
MPAMCFG_MBW_WINWD is read-write if MPAMF_MBW_IDR.WINDWR == 1, permitting configuration of the window width for each PARTID independently on hardware that supports this functionality.
If MPAMF_IDR.HAS_RIS is 1, the control settings accessed are those of the resource instance currently selected by MPAMCFG_PART_SEL.RIS and the PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL.
The power domain of MPAMCFG_MBW_WINWD is IMPLEMENTATION DEFINED.
This register is present only when FEAT_MPAM is implemented and MPAMF_IDR.HAS_MBW_PART == 1. Otherwise, direct accesses to MPAMCFG_MBW_WINWD are RES0.
MPAMCFG_MBW_WINWD is a 32-bit register.
The MPAMCFG_MBW_WINWD 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 | US_INT | US_FRAC |
Reserved, RES0.
Window width, integer microseconds.
This field reads (and sets) the integer part of the window width in microseconds for the PARTID selected by MPAMCFG_PART_SEL.
Window width, fractional microseconds.
This field reads (and sets) the fractional part of the window width in microseconds for the PARTID selected by MPAMCFG_PART_SEL.
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.
MPAMCFG_MBW_WINWD_s must be accessible from the Secure MPAM feature page. MPAMCFG_MBW_WINWD_ns must be accessible from the Non-secure MPAM feature page.
MPAMCFG_MBW_WINWD_s and MPAMCFG_MBW_WINWD_ns must be separate registers. The Secure instance (MPAMCFG_MBW_WINWD_s) accesses the window width used for Secure PARTIDs, and the Non-secure instance (MPAMCFG_MBW_WINWD_ns) accesses the window width used for Non-secure PARTIDs.
When RIS is implemented, loads and stores to MPAMCFG_MBW_WINWD access the window width configuration settings for the bandwidth resource instance selected by MPAMCFG_PART_SEL.RIS and the PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL.
When RIS is not implemented, loads and stores to MPAMCFG_MBW_WINWD access the window width configuration settings for the PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL.
When PARTID narrowing is implemented, loads and stores to MPAMCFG_MBW_WINWD access the window width configuration settings for the internal PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL, and MPAMCFG_PART_SEL.INTERNAL must be 1.
When PARTID narrowing is not implemented, loads and stores to MPAMCFG_MBW_WINWD access the window width configuration settings for the request PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL, and MPAMCFG_PART_SEL.INTERNAL must be 0.
Component | Frame | Offset | Instance |
---|---|---|---|
MPAM | MPAMF_BASE_s | 0x0220 | MPAMCFG_MBW_WINWD_s |
This interface is accessible as follows:
Component | Frame | Offset | Instance |
---|---|---|---|
MPAM | MPAMF_BASE_ns | 0x0220 | MPAMCFG_MBW_WINWD_ns |
This interface is accessible as follows:
30/09/2020 15:07; ccead0cb9f089f9ceec50268e82aec9e71047211
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