linux/Documentation/ABI/testing/sysfs-bus-pci

What:		/sys/bus/pci/devices/.../vpd
Date:		February 2008
Contact:	Ben Hutchings <bhutchings@solarflare.com>
Description:
		A file named vpd in a device directory will be a
		binary file containing the Vital Product Data for the
		device.  It should follow the VPD format defined in
		PCI Specification 2.1 or 2.2, but users should consider
		that some devices may have malformatted data.  If the
		underlying VPD has a writable section then the
		corresponding section of this file will be writable.
PCI: Expose PCI VPD through sysfs Vital Product Data (VPD) may be exposed by PCI devices in several ways. It is generally unsafe to read this information through the existing interfaces to user-land because of stateful interfaces. This adds: - abstract operations for VPD access (struct pci_vpd_ops) - VPD state information in struct pci_dev (struct pci_vpd) - an implementation of the VPD access method specified in PCI 2.2 (in access.c) - a 'vpd' binary file in sysfs directories for PCI devices with VPD operations defined It adds a probe for PCI 2.2 VPD in pci_scan_device() and release of VPD state in pci_release_dev(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 2008-03-05 16:52:39 +00:00			`What: /sys/bus/pci/devices/.../vpd`
			`Date: February 2008`
			`Contact: Ben Hutchings <bhutchings@solarflare.com>`
			`Description:`
			`A file named vpd in a device directory will be a`
			`binary file containing the Vital Product Data for the`
			`device. It should follow the VPD format defined in`
			`PCI Specification 2.1 or 2.2, but users should consider`
			`that some devices may have malformatted data. If the`
			`underlying VPD has a writable section then the`
			`corresponding section of this file will be writable.`