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| author | Chunyan Zhang <zhang.chunyan@linaro.org> | 2016-08-25 21:18:52 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-31 11:05:42 (GMT) |
| commit | f3864d85624a80222c8e01caa112554c998d922b (patch) | |
| tree | bfcaa7d4ac45bb4cabb4c616b11ef3e353669a43 /arch | |
| parent | b8392153721c83de4e5d47ee455bbfefd0c8259e (diff) | |
| download | linux-f3864d85624a80222c8e01caa112554c998d922b.tar.xz | |
coresight-stm: support mmapping channel regions with mmio_addr
CoreSight STM device allows direct mapping of the channel regions to
userspace for zero-copy writing. To support this ability, the STM
framework has provided a hook 'mmio_addr', this patch just implemented
this hook for CoreSight STM.
This patch also added an item into 'channel_space' to save the physical
base address of channel region which mmap operation needs to know.
Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions