On Mon, Jan 12, 2015 at 11:01:33AM +0100, Thierry Reding wrote: > On Fri, Jan 09, 2015 at 08:34:39PM -0600, Rob Herring wrote: > > Many PCI controllers' configuration space accesses are memory mapped > > varying only in address calculation and access checks. There are 2 main > > access methods: a decoded address space such as ECAM or a single address > > and data register similar to x86. This implementation can support both > > cases as well as be used in cases that need additional pre or post access > > handling. > > > > A new pci_ops member map_bus is introduced which can do access checks and > > any necessary setup. It returns the address to use for the configuration > > space access. The access types supported are 32-bit only accesses or > > correct byte, word, or dword sized accesses. > > > > Signed-off-by: Rob Herring <robh@xxxxxxxxxx> > > Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> > > Cc: linux-pci@xxxxxxxxxxxxxxx > > --- > > drivers/pci/access.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++ > > include/linux/pci.h | 11 +++++++ > > 2 files changed, 98 insertions(+) > > Reviewed-by: Thierry Reding <treding@xxxxxxxxxx> > Tested-by: Thierry Reding <treding@xxxxxxxxxx> Although the subject could use the proper casing: "... common PCI ...". Thierry
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