Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 8/28/2023
Public
Document Table of Contents

8.3.4.5. QoS Generator Registers

There is a register set for each QoS generator.

Each QoS generator's register set includes the register types shown in the following table.

Table 63.  QoS Generator Register Types
Name Purpose
I_main_QosGenerator_Priority Specifies master urgencies. Register usage depends on the QoS generator mode.
I_main_QosGenerator_Mode Specifies the QoS generator mode (limiter, regulator, fixed, or bypass).
I_main_QosGenerator_Bandwidth Specifies the bandwidth threshold for limiter and regulator modes.
I_main_QosGenerator_Saturation Specifies the bandwidth measurement time window for limiter and regulator modes. 17

The actual register names consist of the register type plus a prefix specific to the QoS generator. For example, the registers for MPU subsystem L2 cache master 0 are:

  • mpu_m0_I_main_QosGenerator_Priority
  • mpu_m0_I_main_QosGenerator_Mode
  • mpu_m0_I_main_QosGenerator_Bandwidth
  • mpu_m0_I_main_QosGenerator_Saturation
  • mpu_m0_I_main_QosGenerator_ExtControl

The following table lists the prefixes for all QoS generators.

Table 64.  QoS Register Name Prefixes
Initiator Register Name Prefix
MPU Subsystem L2 Cache Master 0 mpu_m0_
MPU Subsystem L2 Cache Master 1 mpu_m1_
FPGA-to-HPS Bridge fpga2soc_axi32_
FPGA-to-HPS Bridge fpga2soc_axi64_
FPGA-to-HPS Bridge fpga2soc_axi128_
DMA Controller dma_m0_
Ethernet MAC 0 emac0_m_
Ethernet MAC 1 emac1_m_
Ethernet MAC 2 emac2_m_
USB-2 OTG 0 usb0_m_
USB-2 OTG 1 usb1_m_
NAND Flash Controller nand_m_
SD/MMC Controller sdmmc_m_
FPGA-to-SDRAM Port 0 fpga2sdram0_axi32_
FPGA-to-SDRAM Port 0 fpga2sdram0_axi64_
FPGA-to-SDRAM Port 0 fpga2sdram0_axi128_
FPGA-to-SDRAM Port 1 fpga2sdram1_axi32_
FPGA-to-SDRAM Port 1 fpga2sdram1_axi64_
FPGA-to-SDRAM Port 2 fpga2sdram2_axi32_
FPGA-to-SDRAM Port 2 fpga2sdram2_axi64_
FPGA-to-SDRAM Port 2 fpga2sdram2_axi128_
17 For detailed information about setting bandwidth and saturation, refer to "Bandwidth and Saturation".