Understanding PCI Express Maximum Payload Size on OpenSolaris


 
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Old 12-18-2008
Understanding PCI Express Maximum Payload Size on OpenSolaris

When PCI Express fabrics are configured properly, PCIe protocol efficiency and performance can be improved in OpenSolaris. Consider a device's payload capabilities as one of the performance parameters when configuring each fabric.

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npe(7D) 							      Devices								   npe(7D)

NAME
npe - PCI Express bus nexus driver DESCRIPTION
The npe nexus driver is used on X64 servers for PCI Express Root Complex devices that provide PCI Express interconnect. This driver is com- pliant to PCI Express base specification, Revision 1.0a. This nexus driver provides support for the following features: Access to extended configuration space, IEEE 1275 extensions for PCI Express, Base line PCI Express error handling and PCI Express MSI interrupts. FILES
/platform/i86pc/kernel/drv/npe 32-bit ELF kernel module. /platform/i86pc/kernel/drv/amd64/npe 64-bit ELF kernel module. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+------------------------------+ |Architecture |x64 PCI Express-based systems | +-----------------------------+------------------------------+ |Availability |SUNWcakr.i | +-----------------------------+------------------------------+ SEE ALSO
attributes(5), pcie(4), pcie_pci(7D) PCI Express Base Specification v1.0a -- 2003 Writing Device Drivers IEEE 1275 PCI Bus Binding -- 1998 http://playground.sun.com/1275/bindings/pci/pci-express.txt SunOS 5.11 12 Oct 2005 npe(7D)