Datasheet

Intel® Management Engine Subsystem Registers (D22:F[3:0])
568 Intel® Xeon® Processor D-1500 Product Family
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
17.1.2.3 ME_CB_RW—Intel
®
ME Circular Buffer Read Window Register
(Intel
®
MEI 1 MMIO Register)
Address Offset: MEI0_MBAR + 08h Attribute: RO
Default Value: FFFFFFFFh Size: 32 bits
17.1.2.4 ME_CSR_HA—Intel
®
ME Control Status Host Access Register
(Intel
®
MEI 1 MMIO Register)
Address Offset: MEI0_MBAR + 0Ch Attribute: RO
Default Value: 02000000h Size: 32 bits
1
Host Interrupt Status (H_IS) — R/WC. Hardware sets this bit to 1 when ME_IG bit is set to 1.
Host clears this bit to 0 by writing a 1 to this bit position. H_IE has no effect on this bit.
0
Host Interrupt Enable (H_IE) — R/W. Host sets this bit to 1 to enable the host interrupt (INTR#
or MSI) to be asserted when H_IS is set to 1.
Bit Description
Bit Description
31:0 Intel ME Circular Buffer Read Window Field (ME_CB_RWF). This bit field is for host to read
from the Intel ME Circular Buffer. The Intel ME's circular buffer is located at the Intel ME subsystem
address specified in the Intel ME CB Base Address register. This field is read only, writes have no
effect. Reads to this register will increment the ME_CBRP as long as ME_RDY is 1. When ME_RDY is
0, reads to this register have no effect, all 1s are returned, and ME_CBRP is not incremented.
Bit Description
31:24 Intel ME Circular Buffer Depth Host Read Access (ME_CBD_HRA).
Host read only access to ME_CBD.
23:16 Intel ME CB Write Pointer Host Read Access (ME_CBWP_HRA).
Host read only access to ME_CBWP.
15:8 Intel ME CB Read Pointer Host Read Access (ME_CBRP_HRA).
Host read only access to ME_CBRP.
7:5 Reserved
4 Intel ME Reset Host Read Access (ME_RST_HRA).
Host read access to ME_RST.
3 Intel ME Ready Host Read Access (ME_RDY_HRA):
Host read access to ME_RDY.
2 Intel ME Interrupt Generate Host Read Access (ME_IG_HRA).
Host read only access to ME_IG.
1 Intel ME Interrupt Status Host Read Access (ME_IS_HRA).
Host read only access to ME_IS.
0 Intel ME Interrupt Enable Host Read Access (ME_IE_HRA).
Host read only access to ME_IE.