PM8621-BI PMC-Sierra, Inc., PM8621-BI Datasheet - Page 61

• Manufacturer Part Number: PM8621-BI
• Description: Driver, NSE/SBS Narrowband Chipset Driver
• Manufacturer: PMC-Sierra, Inc.

3.6
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2021248, Issue 1
The respective device ISR (interrupt service routine) functions read from the master
interrupt-status register of the SBS and NSE. If at least one valid event is found then the
corresponding ISR invokes the its DPR (deferred processing routine) directly. The event
eventually is reported via the registered callback functions to the application.
It is imperative to point out that some time critical API will not function properly when the driver
is set up in polling mode. For instance, the
since it relies on switching pages of all registered devices in a timely fashion by monitoring the
received C1 frame pulse. The same applies to API
Figure 24: NSE/SBS Chipset Driver Event Processing Model – Polling Mode
CSD API Availability
The availability of a CSD API depends largely on whether a device is registered as a local or
remote device. In general, API that requires the actual physical device to perform the task returns
an error code if the device is not present locally. The exception is all module/device/group
management APIs. The fabric management APIs are also available regardless of the device status
if the OPA is present locally.
nseISR
sbsISR
TimeCritical
Information
Information
Information
Information
Non Time
Interrupt
Interrupt
Interrupt
Interrupt
Context
Context
Context
Context
ILC Rx
Critical
SBS Device Driver
NSE Device Driver
nseTcTaskFn
sbsIlcRxTask
sbsDPR
nseDPR
Fn
nbcsPoll
nbcsStswTogglePage
TimeCritical
Callbacks
Callbacks
Callbacks
Callbacks
Indication
Indication
Indication
Indication
nbcsEventDetectC1FP
ILC Rx
Narrowband Chipset Device Driver Manual
cbackSbsPmgc
cbackNseIlcRx
cbackSbsWplc
cbackSbsIlcRx
Chipset Driver
cbackSbsTsw
cbackNseSsw
cbackNsePort
cbackNseIntf
cbackSbsIntf
will not operate correctly
.
cbackC1FP
cbackPrgm
cbackIlcRx
cbackStsw
cbackLkc
cbackIntf
cbackIlc
Software Architecture
Head
Data
Applica
tion
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