driver: apdu: add MBIM backend (#166)

Add an APDU backend for MBIM devices. The MBIM device path can be passed via the MBIM_DEVICE environment variable. We'll default to /dev/cdc-wdm0. By default we will not operate through the mbim-proxy. Set MBIM_USE_PROXY to 1 to enable this. Like QMI devices, use UIM_PORT to select the active SIM slot. Tested on Semtech EM9191 and EM7590, and Quectel RM520N-GL. resolve #94 Signed-off-by: Frans Klaver <[email protected]> Co-authored-by: Frans Klaver <[email protected]>
estkme-group · Nov 16, 2024 · 5987dfa · 5987dfa
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diff --git a/docs/ENVVARS.md b/docs/ENVVARS.md
@@ -8,15 +8,18 @@
   - `stdio`: use standard input/output
   - `qmi`: use QMI
   - `qmi_qrtr`: use QMI over QRTR
+  - `mbim`: use MBIM
   - GBinder-based backends for `libhybris` (Halium) distributions:
 	- `gbinder_hidl`: use HIDL IRadio (SoC launched before Android 13)
 * `LPAC_HTTP`: specify which HTTP backend will be used.
   - `curl`: use libcurl
   - `stdio`: use standard input/ouput
 * `AT_DEVICE`: specify which serial port device will be used by AT APDU backend.
 * `QMI_DEVICE`: specify which QMI device will be used by QMI APDU backend.
-* `UIM_SLOT`: specify which UIM slot will be used by QMI APDU backends. (default: 1)
+* `UIM_SLOT`: specify which UIM slot will be used by QMI and MBIM APDU backends. (default: 1, slot number starts from 1)
 * `DRIVER_IFID`: specify which PC/SC interface will be used by PC/SC APDU backend.
+* `MBIM_DEVICE`: specify which MBIM device will be used by MBIM APDU backend. (default: "/dev/cdc-wdm0")
+* `MBIM_USE_PROXY`: tell the MBIM APDU backend to use the mbim-proxy. (default: 0, anything other than 0 means true)
 
 ## Debug
 

diff --git a/driver/CMakeLists.txt b/driver/CMakeLists.txt
@@ -10,6 +10,7 @@ endif()
 option(LPAC_WITH_APDU_GBINDER "Build APDU Gbinder backend for libhybris devices (requires gbinder headers)" OFF)
 option(LPAC_WITH_APDU_QMI "Build QMI backend for Qualcomm devices (requires libqmi)" OFF)
 option(LPAC_WITH_APDU_QMI_QRTR "Build QMI-over-QRTR backend for Qualcomm devices (requires libqrtr and libqmi headers)" OFF)
+option(LPAC_WITH_APDU_MBIM "Build MBIM backend for MBIM devices (requires libmbim)" OFF)
 
 option(LPAC_WITH_HTTP_CURL "Build HTTP Curl interface" ON)
 
@@ -94,6 +95,19 @@ if(LPAC_WITH_APDU_QMI_QRTR)
     endif()
 endif()
 
+if(LPAC_WITH_APDU_MBIM)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DLPAC_WITH_APDU_MBIM")
+    target_sources(euicc-drivers PRIVATE
+    ${CMAKE_CURRENT_SOURCE_DIR}/apdu/mbim.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/apdu/mbim_helpers.c)
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(MBIM_GLIB REQUIRED IMPORTED_TARGET mbim-glib)
+    target_link_libraries(euicc-drivers PkgConfig::MBIM_GLIB PkgConfig::MBIM_GLIB)
+    if(LPAC_DYNAMIC_DRIVERS)
+        list(APPEND LIBEUICC_DRIVERS_REQUIRES "mbim-glib")
+    endif()
+endif()
+
 if(LPAC_WITH_HTTP_CURL)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DLPAC_WITH_HTTP_CURL")
     target_sources(euicc-drivers PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/http/curl.c)