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broadband-modem-mbim: add qdu firmware update check

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The manufacturers can offer a firmware update file 'ota.bin' with which
the firmware can be updated in the modem via a manufacturer tool using
windows. The tool is only available for Windows and can therefore not be used
for embedded devices.

A investigation has shown that this tool updates the firmware via 'mbim-qdu'.
The update service 'fwupd' which has a 'modemmanager' plugin can install the
firmware via 'mbim-qdu'. For this to work, the ModemManager must export this
update method via the firmware interface.

As the 'mbim-qdu' is a generic update method, the check is integrated into the
'mm-broadband-modem-mbim' class. If 'mbim-qdu' update method is supported by
the mbim interface and the udev env variable 'ID_MM_MBIM_QDU' is set for this
modem, then the 'mbim-qdu' update is exported via dbus.

The following line must be added to the '77-mm-cinterion-port-types.rules'
udev rules file, for example, so that the mbim-qdu update for the 'MV31' can
be used.

ATTRS{vendor}=="0x1e2d", ATTRS{device}=="0x00b3", ENV{ID_MM_MBIM_QDU}="1"

This is the corresponding output of the 'mmcli' command to show the supported
update method for the 'MV31'.

root@G3-10940 ~ # mmcli -m Modem1 --firmware-status
  Firmware |     method: mbim-qdu
           | device ids: USB\VID_1E2D&PID_00B3&REV_0414&CARRIER_GCF
           |             USB\VID_1E2D&PID_00B3&REV_0414
           |             USB\VID_1E2D&PID_00B3
           |             USB\VID_1E2D
           |    version: T99W175.F0.1.0.0.9.GC.004.063 - 0A000804

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
This commit is contained in:
Florian Eckert
2025-05-22 09:04:40 -05:00
committed by Dan Williams
parent 680aed6acf
commit d058dd0775
1 changed files with 39 additions and 0 deletions
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src/mm-broadband-modem-mbim.c
+39
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@@ -153,6 +153,7 @@ struct _MMBroadbandModemMbimPrivate {
gboolean is_ms_sar_supported;
gboolean is_google_carrier_lock_supported;
gboolean is_ms_device_reset_supported;
gboolean is_qdu_supported;
/* Process unsolicited notifications */
gulong notification_id;
@@ -3537,6 +3538,12 @@ query_device_services_ready (MbimDevice *device,
continue;
}
if (service == MBIM_SERVICE_QDU) {
mm_obj_dbg (self, "Qualcomm Device Upgrade method mbim-qdu supported");
self->priv->is_qdu_supported = TRUE;
continue;
}
/* no optional features to check in remaining services */
}
mbim_device_service_element_array_free (device_services);
@@ -10380,11 +10387,43 @@ modem_firmware_load_update_settings_finish (MMIfaceModemFirmware *self,
return mm_iface_modem_firmware_load_update_settings_in_port_finish (self, res, error);
}
static gboolean
modem_is_qdu_supported (MMBaseModem *modem,
MMKernelDevice *kernel_device)
{
return mm_kernel_device_get_global_property_as_boolean (kernel_device, "ID_MM_MBIM_QDU");
}
static void
modem_firmware_load_update_settings (MMIfaceModemFirmware *self,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
MMPortMbim *mbim_port;
MMKernelDevice *kernel_device;
MMModemFirmwareUpdateMethod update_methods;
g_autoptr(MMFirmwareUpdateSettings) update_settings = NULL;
/* Check first if 'mbim-qdu' is supported and selected via udev. If the
* update method 'mbim-qdu' is not supported and not selected via udev,
* then the generic update method 'firehose/sahara' are checked.
*/
update_methods = MM_MODEM_FIRMWARE_UPDATE_METHOD_NONE;
mbim_port = mm_broadband_modem_mbim_peek_port_mbim (MM_BROADBAND_MODEM_MBIM (self));
if (mbim_port) {
kernel_device = mm_port_peek_kernel_device (MM_PORT (mbim_port));
if ((MM_BROADBAND_MODEM_MBIM (self)->priv->is_qdu_supported) &&
modem_is_qdu_supported (MM_BASE_MODEM (self), kernel_device)) {
task = g_task_new (self, NULL, callback, user_data);
update_settings = mm_firmware_update_settings_new (update_methods);
mm_firmware_update_settings_set_method (update_settings, MM_MODEM_FIRMWARE_UPDATE_METHOD_MBIM_QDU);
g_task_return_pointer (task, g_object_ref (update_settings), (GDestroyNotify) g_object_unref);
g_object_unref (task);
return;
}
}
mm_iface_modem_firmware_load_update_settings_in_port (
self,
MM_PORT (mm_broadband_modem_mbim_peek_port_mbim (MM_BROADBAND_MODEM_MBIM (self))),