1. 07 1月, 2015 1 次提交
  2. 24 6月, 2014 1 次提交
  3. 17 6月, 2009 1 次提交
  4. 12 6月, 2009 1 次提交
    • A
      PCI: Add support for turning PCIe ECRC on or off · 43c16408
      Andrew Patterson 提交于
      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: NAndrew Patterson <andrew.patterson@hp.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      43c16408
  5. 12 7月, 2007 1 次提交
  6. 27 9月, 2006 1 次提交
    • Z
      PCI-Express AER implemetation: AER core and aerdriver · 6c2b374d
      Zhang, Yanmin 提交于
      Patch 3 implements the core part of PCI-Express AER and aerdrv
      port service driver.
      
      When a root port service device is probed, the aerdrv will call
      request_irq to register irq handler for AER error interrupt.
      
      When a device sends an PCI-Express error message to the root port,
      the root port will trigger an interrupt, by either MSI or IO-APIC,
      then kernel would run the irq handler. The handler collects root
      error status register and schedules a work. The work will call
      the core part to process the error based on its type
      (Correctable/non-fatal/fatal).
      
      As for Correctable errors, the patch chooses to just clear the correctable
      error status register of the device.
      
      As for the non-fatal error, the patch follows generic PCI error handler
      rules to call the error callback functions of the endpoint's driver. If
      the device is a bridge, the patch chooses to broadcast the error to
      downstream devices.
      
      As for the fatal error, the patch resets the pci-express link and
      follows generic PCI error handler rules to call the error callback
      functions of the endpoint's driver. If the device is a bridge, the patch
      chooses to broadcast the error to downstream devices.
      Signed-off-by: NZhang Yanmin <yanmin.zhang@intel.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      6c2b374d