Справочник Пользователя для Intel E7-4870 v2 CM8063601272606
Модели
CM8063601272606
Integrated I/O (IIO) Configuration Registers
238
Intel
®
Xeon
®
Processor E7-2800/4800/8800 v2 Product Family
Datasheet Volume Two: Functional Description, February 2014
14.2.55 DEVCTRL2
PCI Express Device Control Register 2.
3:0
RO
0xe
cmpltovalsup:
Completion Timeout Values Supported
This field indicates device support for the optional Completion Timeout
This field indicates device support for the optional Completion Timeout
programmability mechanism. This mechanism allows system software to
modify the Completion Timeout range. Bits are one-hot encoded and set
according to the table below to show timeout value ranges supported. A
device that supports the optional capability of Completion Timeout
Programmability must set at least two bits.Four time values ranges are
defined:
Range A: 50 us to 10 ms
Range B: 10 ms to 250 ms
Range C: 250 ms to 4 s
Range D: 4 s to 64 s
Bits are set according to table below to show timeout value ranges
Range A: 50 us to 10 ms
Range B: 10 ms to 250 ms
Range C: 250 ms to 4 s
Range D: 4 s to 64 s
Bits are set according to table below to show timeout value ranges
supported.
0000b: Completions Timeout programming not supported – values is fixed by
0000b: Completions Timeout programming not supported – values is fixed by
implementation in the range 50 us to 50 ms.
0001b: Range A
0010b: Range B
0011b: Range A & B
0110b: Range B & C
0111b: Range A, B, & C
1110b: Range B, C D
1111b: Range A, B, C & D
All other values are reserved.
IIO supports timeout values up to 10 ms-64 s
0001b: Range A
0010b: Range B
0011b: Range A & B
0110b: Range B & C
0111b: Range A, B, & C
1110b: Range B, C D
1111b: Range A, B, C & D
All other values are reserved.
IIO supports timeout values up to 10 ms-64 s
Type:
CFG
PortID:
N/A
Bus:
0
Device:
0Function:0
Bus:
0
Device:
2Function:0-3
Bus:
0
Device:
3Function:0-3
Offset:
0xb4
Bit
Attr
Default
Description
Type:
CFG
PortID:
N/A
Bus:
0
Device:
0Function:0 (DMI2 Mode)
Offset: 0xf8
Bus:
0
Device:
0Function:0 (PCIe* Mode)
Bus:
0
Device:
2Function:0-3
Bus:
0
Device:
3Function:0-3
Offset:
0xb8
Bit
Attr
Default
Description
15:8
RV
-
Reserved.
7:7
RO
0x0
atomicegressblock:
6:6
RO
0x0
atomicreqen:
5:5
RW_L
0x0
ari:
Alternative RID InterpretationEnable
Applies only to root ports. When set to 1b, ARI is enabled
Applies only to root ports. When set to 1b, ARI is enabled
for the Root Port. For Device#0 in DMI mode, this bit is
ignored