diff options
| author | Rob Herring <robh@kernel.org> | 2015-01-09 20:34:39 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-01-22 13:59:45 -0600 |
| commit | 1f94a94f67e1083e19fb7b436dd7ca7a4ba03f2b (patch) | |
| tree | ab2370828b760ed28ca7500c37318c78fcfc6fef /init/do_mounts.h | |
| parent | 453c02c28405978b7ef5d673023e5fec19bccf3f (diff) | |
PCI: Add generic config accessors
Many PCI controllers' configuration space accesses are memory-mapped and
vary 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.
Add a new pci_ops member, map_bus, 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.
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'init/do_mounts.h')
0 files changed, 0 insertions, 0 deletions