From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932588AbdJKFJH (ORCPT ); Wed, 11 Oct 2017 01:09:07 -0400 Received: from mail-pf0-f178.google.com ([209.85.192.178]:49783 "EHLO mail-pf0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750959AbdJKFJC (ORCPT ); Wed, 11 Oct 2017 01:09:02 -0400 X-Google-Smtp-Source: AOwi7QDrJJpgrFlctTtFvHXxrubZ1Dg3+Mk2FfNs4ZP2pTtYLqbOoIG7PBVn9ZyXFpC1ZyQMOKVOBQ== From: Bjorn Andersson To: Andy Gross Cc: Anton Vorontsov , Colin Cross , David Brown , Frank Rowand , Kees Cook , Rob Herring , Tony Luck , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-soc@vger.kernel.org Subject: [PATCH v4 0/5] Qualcomm remote filesystem shared memory driver Date: Tue, 10 Oct 2017 22:08:52 -0700 Message-Id: <20171011050857.7588-1-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.12.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 | 271 +++++++++++++++++++++ include/linux/of_reserved_mem.h | 5 + 8 files changed, 379 insertions(+), 8 deletions(-) create mode 100644 Documentation/devicetree/bindings/reserved-memory/qcom,rmtfs-mem.txt create mode 100644 drivers/soc/qcom/rmtfs_mem.c -- 2.12.0