Broadcom NetXtreme/NetLink BCM5718 Series User Manual

Send BD Initiator Control RegistersBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 355
Send BD Fetch Threshold Register (offset: 0x1850)
Send Mail Box Registers
15 more Host Send Producer Index registers are added to the High Priority Mail Box region as shown in the
Table below. Similarly, 15 more NIC Send Producer Index registers are also added in the GRC space.
Name Bits Access
Default
Value
Description
Reserved 31:6 RO 0x00 Unused
Send BD Fetch Threshold 5:0 RW 0x1F The value programmed in this field sets a cap to
the number of SBDs that would be fetched by a
single DMA transaction (although there are other
factors which might further limit the DMA size).
This parameter uniformly applies to all 16 Send
Rings.
This parameter is meaningful only in the Multiple
Send Ring mode. 0x1800[5] == 1
Table 105: Multiple Send Ring Mail Boxes
Send Ring #
Host Send Ring
Producer Index
(High Priority Mail Box)
NIC Send Ring
Producer Index
NIC Diagnostic
Send Ring
Consumer Index
Usable in
Legacy /1 0x304 0x5980 0x3CC0 Legacy Mode,
RSS Mode and
IOV Mode
2 0x300 0x5984 0x3F04
RSS Mode and
IOV Mode
3 0x30C 0x5988 0x3F08
4 0x308 0x598C 0x3F0C
5 0x314 0x5990 0x3F10
IOV Mode Only
6 0x310 0x5994 0x3F14
7 0x31C 0x5998 0x3F18
8 0x318 0x599C 0x3F1C
9 0x324 0x59A0 0x3F20
10 0x320 0x59A4 0x3F24
11 0x32C 0x59A8 0x3F28
12 0x328 0x59AC 0x3F2C
13 0x334 0x59B0 0x3F30
14 0x330 0x59B4 0x3F34
15 0x33C 0x59B8 0x3F38
16 0x338 0x59BC 0x3F3C

Broadcom NetXtreme/NetLink BCM5718 Series Specifications

General

Brand	Broadcom
Model	NetXtreme/NetLink BCM5718 Series
Category	Controller
Language	English