[PATCH v3 0/5] Qualcomm remote filesystem shared memory driver
From: Bjorn Andersson
Date: Wed Oct 04 2017 - 23:33:12 EST
Some remote processors (in particular the modem) found in Qualcomm platforms
stores configuration parameters and other data in a file system. As the remotes
does not have direct storage access it needs to relay block accesses through a
service running on the application CPU.
The memory is described in DeviceTree by a new reserved-memory compatible and
the implementation provides the user space service a read/write interface to
this chunk of memory.
Bjorn Andersson (5):
of/platform: Generalize /reserved-memory handling
of: reserved_mem: Accessor for acquiring reserved_mem
dt-binding: soc: qcom: Add binding for rmtfs memory
soc: qcom: Remote filesystem memory driver
arm64: dts: msm8916: Mark rmtfs node as qcom,rmtfs-mem compatible
.../bindings/reserved-memory/qcom,rmtfs-mem.txt | 51 ++++
arch/arm64/boot/dts/qcom/msm8916.dtsi | 3 +
drivers/of/of_reserved_mem.c | 26 ++
drivers/of/platform.c | 19 +-
drivers/soc/qcom/Kconfig | 11 +
drivers/soc/qcom/Makefile | 1 +
drivers/soc/qcom/rmtfs_mem.c | 272 +++++++++++++++++++++
include/linux/of_reserved_mem.h | 5 +
8 files changed, 380 insertions(+), 8 deletions(-)
create mode 100644 Documentation/devicetree/bindings/reserved-memory/qcom,rmtfs-mem.txt
create mode 100644 drivers/soc/qcom/rmtfs_mem.c
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2.12.0