This series presents the driver for the Qualcomm IP Accelerator (IPA). The IPA is a component present in some Qualcomm SoCs that allows network functions such as aggregation, filtering, routing, and NAT to be performed without active involvement of the main application processor (AP).
Initially, these advanced features are disabled; the IPA driver simply provides a network interface that makes the modem's LTE network available to the AP. In addition, only support for the IPA found in the Qualcomm SDM845 SoC is provided. This code is derived from a driver developed internally by Qualcomm. A version of the original source can be seen here: https://source.codeaurora.org/quic/la/kernel/msm-4.9/tree in the "drivers/platform/msm/ipa" directory. Many were involved in developing this, but the following individuals deserve explicit acknowledgement for their substantial contributions: Abhishek Choubey Ady Abraham Chaitanya Pratapa David Arinzon Ghanim Fodi Gidon Studinski Ravi Gummadidala Shihuan Liu Skylar Chang A version of this code was posted in November 2018 as an RFC. https://lore.kernel.org/lkml/20181107003250.5832-1-el...@linaro.org/ Fixes addressing all feedback received have been implemented. It has undergone considerable further rework since that time, and most of the "future work" described then has now been completed. This code (including its dependencies) is available in buildable form here, based on kernel v5.1: remote: ssh://g...@git.linaro.org/people/alex.elder/linux.git branch: ipa-v1_kernel-v5.1 f5d4a676a981 arm64: defconfig: enable build of IPA code -Alex Alex Elder (18): bitfield.h: add FIELD_MAX() and field_max() soc: qcom: create "include/soc/qcom/rmnet.h" dt-bindings: soc: qcom: add IPA bindings soc: qcom: ipa: main code soc: qcom: ipa: configuration data soc: qcom: ipa: clocking, interrupts, and memory soc: qcom: ipa: GSI headers soc: qcom: ipa: the generic software interface soc: qcom: ipa: GSI transactions soc: qcom: ipa: IPA interface to GSI soc: qcom: ipa: IPA endpoints soc: qcom: ipa: immediate commands soc: qcom: ipa: IPA network device and microcontroller soc: qcom: ipa: AP/modem communications soc: qcom: ipa: support build of IPA code MAINTAINERS: add entry for the Qualcomm IPA driver arm64: dts: sdm845: add IPA information arm64: defconfig: enable build of IPA code .../devicetree/bindings/net/qcom,ipa.txt | 164 ++ MAINTAINERS | 6 + arch/arm64/boot/dts/qcom/sdm845.dtsi | 51 + arch/arm64/configs/defconfig | 1 + drivers/net/Kconfig | 2 + drivers/net/Makefile | 1 + .../ethernet/qualcomm/rmnet/rmnet_handlers.c | 1 + .../net/ethernet/qualcomm/rmnet/rmnet_map.h | 24 - .../qualcomm/rmnet/rmnet_map_command.c | 1 + .../ethernet/qualcomm/rmnet/rmnet_map_data.c | 1 + .../net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 1 + drivers/net/ipa/Kconfig | 16 + drivers/net/ipa/Makefile | 7 + drivers/net/ipa/gsi.c | 1741 +++++++++++++++++ drivers/net/ipa/gsi.h | 241 +++ drivers/net/ipa/gsi_private.h | 147 ++ drivers/net/ipa/gsi_reg.h | 376 ++++ drivers/net/ipa/gsi_trans.c | 604 ++++++ drivers/net/ipa/gsi_trans.h | 106 + drivers/net/ipa/ipa.h | 131 ++ drivers/net/ipa/ipa_clock.c | 291 +++ drivers/net/ipa/ipa_clock.h | 52 + drivers/net/ipa/ipa_cmd.c | 372 ++++ drivers/net/ipa/ipa_cmd.h | 116 ++ drivers/net/ipa/ipa_data-sdm845.c | 245 +++ drivers/net/ipa/ipa_data.h | 267 +++ drivers/net/ipa/ipa_endpoint.c | 1253 ++++++++++++ drivers/net/ipa/ipa_endpoint.h | 96 + drivers/net/ipa/ipa_gsi.c | 48 + drivers/net/ipa/ipa_gsi.h | 49 + drivers/net/ipa/ipa_interrupt.c | 279 +++ drivers/net/ipa/ipa_interrupt.h | 53 + drivers/net/ipa/ipa_main.c | 920 +++++++++ drivers/net/ipa/ipa_mem.c | 237 +++ drivers/net/ipa/ipa_mem.h | 82 + drivers/net/ipa/ipa_netdev.c | 250 +++ drivers/net/ipa/ipa_netdev.h | 24 + drivers/net/ipa/ipa_qmi.c | 399 ++++ drivers/net/ipa/ipa_qmi.h | 35 + drivers/net/ipa/ipa_qmi_msg.c | 583 ++++++ drivers/net/ipa/ipa_qmi_msg.h | 238 +++ drivers/net/ipa/ipa_reg.h | 279 +++ drivers/net/ipa/ipa_smp2p.c | 304 +++ drivers/net/ipa/ipa_smp2p.h | 47 + drivers/net/ipa/ipa_uc.c | 208 ++ drivers/net/ipa/ipa_uc.h | 32 + include/linux/bitfield.h | 14 + include/soc/qcom/rmnet.h | 38 + 48 files changed, 10409 insertions(+), 24 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/qcom,ipa.txt create mode 100644 drivers/net/ipa/Kconfig create mode 100644 drivers/net/ipa/Makefile create mode 100644 drivers/net/ipa/gsi.c create mode 100644 drivers/net/ipa/gsi.h create mode 100644 drivers/net/ipa/gsi_private.h create mode 100644 drivers/net/ipa/gsi_reg.h create mode 100644 drivers/net/ipa/gsi_trans.c create mode 100644 drivers/net/ipa/gsi_trans.h create mode 100644 drivers/net/ipa/ipa.h create mode 100644 drivers/net/ipa/ipa_clock.c create mode 100644 drivers/net/ipa/ipa_clock.h create mode 100644 drivers/net/ipa/ipa_cmd.c create mode 100644 drivers/net/ipa/ipa_cmd.h create mode 100644 drivers/net/ipa/ipa_data-sdm845.c create mode 100644 drivers/net/ipa/ipa_data.h create mode 100644 drivers/net/ipa/ipa_endpoint.c create mode 100644 drivers/net/ipa/ipa_endpoint.h create mode 100644 drivers/net/ipa/ipa_gsi.c create mode 100644 drivers/net/ipa/ipa_gsi.h create mode 100644 drivers/net/ipa/ipa_interrupt.c create mode 100644 drivers/net/ipa/ipa_interrupt.h create mode 100644 drivers/net/ipa/ipa_main.c create mode 100644 drivers/net/ipa/ipa_mem.c create mode 100644 drivers/net/ipa/ipa_mem.h create mode 100644 drivers/net/ipa/ipa_netdev.c create mode 100644 drivers/net/ipa/ipa_netdev.h create mode 100644 drivers/net/ipa/ipa_qmi.c create mode 100644 drivers/net/ipa/ipa_qmi.h create mode 100644 drivers/net/ipa/ipa_qmi_msg.c create mode 100644 drivers/net/ipa/ipa_qmi_msg.h create mode 100644 drivers/net/ipa/ipa_reg.h create mode 100644 drivers/net/ipa/ipa_smp2p.c create mode 100644 drivers/net/ipa/ipa_smp2p.h create mode 100644 drivers/net/ipa/ipa_uc.c create mode 100644 drivers/net/ipa/ipa_uc.h create mode 100644 include/soc/qcom/rmnet.h -- 2.20.1
