ACS Capability Register (ACSCAPR) – Offset 144 - 1.2 - ID:615146 | Intel® 400 Series Chipset On-Package Platform Controller Hub

Introduction
8254 Timer
Advanced Programmable Interrupt Controller (APIC)
APIC Indirect
CNVi PCI Configuration
DCI PCR
- DCI Control (ECTRL)
EMMC Additional
EMMC Memory Mapped
EMMC PCI Configuration
eMMC PCR
- Dynamic Clock Gating Control (GPPRVRW1)
Enhanced SPI (eSPI) PCI Configuration
eSPI PCR
FIA Configuration PCR
GbE Configuration
GbE Memory Mapped I/O
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Generic SPI (GSPI) DMA Controller
Generic SPI (GSPI) Memory Mapped
GPIO Community 0
GPIO Community 1
GPIO Community 2
GPIO Community 3
GPIO Community 4
GSPI PCI Configuration
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High Definition Audio (D31:F3) PCI Configuration
HPET Memory Mapped
I2C Additional
I2C DMA Controller
I2C Memory Mapped
I2C PCI Congifuration
IDE Redirect PCI Configuration (D22:F2)
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Intel RST for PCIe Storage (Remapping) PCI Configuration (D24:F0)
Intel RST for PCIe Storage MMIO
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Interrupt
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IO Trap
ISH
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ISH PCR
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Keyboard and Text (KT) PCI Configuration (D22:F3)
LPC Configuration
LPC PCR
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OPI PCR
P2SB PCI Configuration
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PMC Memory Mapped
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PSF1
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PSF4
PSF5
RTC Indexed
RTC PCR
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SATA MXTBA
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SDXC Additional Memory Mapped
SDXC Memory Mapped
SDXC PCI Configuration
SMBus Configuration
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SPI Memory Mapped
Thermal Reporting Configuration
Thermal Reporting Memory Mapped
UART Additional Memory Mapped
UART DMA Controller
UART Memory Mapped
UART PCI Configuration
xDCI MMIO Device
xDCI MMIO Global
xDCI PCI Configuration
xHCI Configuration
xHCI Memory Mapped

ACS Capability Register (ACSCAPR) – Offset 144

Bit Range	Default	Access	Field Name and Description
30:7	-	-	Reserved
6	0b	RO	ACS Direct Translated P2P (T) ACS Direct Translated P2P (T): ACS Direct Translated P2P is not supported.
5	0b	RO	ACS P2P Egress Control (E) ACS P2P Egress Control (E): ACS P2P Egress Control is not supported.
4	0b	RO	ACS Upstream Forwarding (U) ACS Upstream Forwarding (U): ACS Upstream Forwarding is not supported.
3	1b	RW/O	ACS P2P Completion Redirect (C) ACS P2P Completion Redirect (C): Required for all Functions that support ACS P2P Request Redirect; must be hardwired to 0b otherwise. If 1b, indicates that the component implements ACS P2P Completion Redirect.
2	1b	RW/O	ACS P2P Request Redirect (R) ACS P2P Request Redirect (R): Required for Root Ports that support peer-to-peer traffic with other Root Ports; required for Switch Downstream Ports; required for multi-function device Functions that support peer-to-peer traffic with other Functions; must be hardwired to 0b otherwise. If 1b, indicates that the component implements ACS P2P Request Redirect.
1	1b	RW/O	ACS Translation Blocking (B) ACS Translation Blocking (B): Required for Root Ports and Switch Downstream Ports; must be hardwired to 0b otherwise. If 1b, indicates that the component implements ACS Translation Blocking.
0	1b	RW/O	ACS Source Validation (V) ACS Source Validation (V): Required for Root Ports and Switch Downstream Ports; must be hardwired to 0b otherwise. If 1b, indicates that the component implements ACS Source Validation.

ACS Control Register (ACSCTLR)

Error Source Identification (ESID) ACS Control Register (ACSCTLR)