1. 08 Mar, 2016 2 commits
  2. 25 Feb, 2016 1 commit
    • Bjorn Helgaas's avatar
      PCI: Disable IO/MEM decoding for devices with non-compliant BARs · b84106b4
      Bjorn Helgaas authored
      The PCI config header (first 64 bytes of each device's config space) is
      defined by the PCI spec so generic software can identify the device and
      manage its usage of I/O, memory, and IRQ resources.
      
      Some non-spec-compliant devices put registers other than BARs where the
      BARs should be.  When the PCI core sizes these "BARs", the reads and writes
      it does may have unwanted side effects, and the "BAR" may appear to
      describe non-sensical address space.
      
      Add a flag bit to mark non-compliant devices so we don't touch their BARs.
      Turn off IO/MEM decoding to prevent the devices from consuming address
      space, since we can't read the BARs to find out what that address space
      would be.
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Tested-by: default avatarAndi Kleen <ak@linux.intel.com>
      CC: stable@vger.kernel.org
      b84106b4
  3. 24 Jan, 2016 37 commits