Pchb

PCHB(4) - Device Drivers Manual

Intro, Pci, Random, Pchb

PCHB(4) - Device Drivers Manual # PCHB(4) - Device Drivers Manual NAME # pchb - PCI-Host Bridge SYNOPSIS # pchb* at pci? pci* at pchb? DESCRIPTION # The pchb driver provides support for PCI-Host adapter-specific functions. Support is provided for the following devices: i450 PCIset (Orion) Supports additional PCI buses. Reliance Computer ROSB4, CNB20HE, CNB20LE Supports additional PCI buses. i82424ZX (Saturn) Disables CPU-PCI write posting. i82443BX Provides workaround for the following errata: “An incorrect address may be driven on the DRAM bus, resulting in memory data being fetched from the wrong location. ...

RANDOM(4) - Device Drivers Manual

Pchb, Glxsb, Arc4random, Amdpm, Random

RANDOM(4) - Device Drivers Manual # RANDOM(4) - Device Drivers Manual NAME # random, urandom - random data source device DESCRIPTION # The urandom device produces high quality pseudo-random output data without ever blocking. Entropy data stored previously is provided to the kernel during the boot sequence and used as inner-state of a stream cipher. High quality data is available immediately upon kernel startup. System activity (such as disk, network, and clock device interrupts), and hardware random generator output is collected, whitened with a crc and hash, then periodically folded together with stream cipher inner-state and outer-state to create a new inner state. ...