kernel_optimize_test/drivers/pci/pcie
Andrew Patterson 43c1640884 PCI: Add support for turning PCIe ECRC on or off
Adds support for PCI Express transaction layer end-to-end CRC checking
(ECRC).  This patch will enable/disable ECRC checking by setting/clearing
the ECRC Check Enable and/or ECRC Generation Enable bits for devices that
support ECRC.

The ECRC setting is controlled by the "pci=ecrc=<policy>" command-line
option. If this option is not set or is set to 'bios", the enable and
generation bits are left in whatever state that firmware/BIOS set them to.
The "off" setting turns them off, and the "on" option turns them on (if the
device supports it).

Turning ECRC on or off can be a data integrity versus performance
tradeoff.  In theory, turning it on will catch more data errors, turning
it off means possibly better performance since CRC does not need to be
calculated by the PCIe hardware and packet sizes are reduced.

Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-11 12:04:21 -07:00
..
aer PCI: Add support for turning PCIe ECRC on or off 2009-06-11 12:04:21 -07:00
aspm.c PCI: disable ASPM on VIA root-port-under-bridge configurations 2009-06-11 12:04:18 -07:00
Kconfig PCI Express ASPM support should default to 'No' 2008-04-23 15:41:14 -07:00
Makefile PCI: add PCI Express ASPM support 2008-04-20 21:47:03 -07:00
portdrv_bus.c PCI: PCIe portdrv: Remove struct pcie_port_service_id 2009-03-19 19:29:23 -07:00
portdrv_core.c PCIE: remove driver_data direct access of struct device 2009-06-11 12:04:04 -07:00
portdrv_pci.c PCI: Fix pci-e port driver slot_reset bad default return value 2009-05-05 12:20:57 -07:00
portdrv.h PCI: PCIe portdrv: Implement pm object 2009-03-20 10:47:49 -07:00