On Wed, Apr 05, 2023 at 11:22:34PM +0000, Mikolaj Kucharski wrote:
> On Wed, Apr 05, 2023 at 11:16:55PM +0000, miko...@kucharski.name wrote:
> > >Synopsis: Sierra Wireless MC7750 attaches as ugen(4)
> > >Category: kernel
> > >Environment:
> > System : OpenBSD 7.3
> > Details : OpenBSD 7.3 (GENERIC.MP) #1125: Sat Mar 25 10:36:29 MDT
> > 2023
> >
> > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> > Architecture: OpenBSD.amd64
> > Machine : amd64
> > >Description:
> > Sierra Wireless MC7750 attaches as ugen(4) on PC Engines APU3,
> > running OpenBSD. Modem is mini-PCIe device.
> > >How-To-Repeat:
> > No specific steps. Plug in the device, boot up OpenBSD.
> > >Fix:
> > Unknown.
> >
>
> Forgot to also add lsusb output.
>
> # lsusb -vvv -d 1199:68a2
>
> Bus 002 Device 003: ID 1199:68a2 Sierra Wireless, Inc.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> idVendor 0x1199 Sierra Wireless, Inc.
> idProduct 0x68a2
> bcdDevice 0.06
> iManufacturer 3 Sierra Wireless, Incorporated
> iProduct 2 MC7750
> iSerial 4 001027009999999
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 115
> bNumInterfaces 4
> bConfigurationValue 1
> iConfiguration 1 Sierra Configuration
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 0mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 255 Vendor Specific Subclass
> bInterfaceProtocol 255 Vendor Specific Protocol
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x01 EP 1 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 2
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 255 Vendor Specific Subclass
> bInterfaceProtocol 255 Vendor Specific Protocol
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x82 EP 2 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x02 EP 2 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 3
> bAlternateSetting 0
> bNumEndpoints 3
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 255 Vendor Specific Subclass
> bInterfaceProtocol 255 Vendor Specific Protocol
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0040 1x 64 bytes
> bInterval 5
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x84 EP 4 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 8
> bAlternateSetting 0
> bNumEndpoints 3
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 255 Vendor Specific Subclass
> bInterfaceProtocol 255 Vendor Specific Protocol
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x85 EP 5 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0040 1x 64 bytes
> bInterval 5
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x86 EP 6 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x04 EP 4 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Device Qualifier (for other device speed):
> bLength 10
> bDescriptorType 6
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> bNumConfigurations 1
> Device Status: 0x0001
> Self Powered
this is almost certainly a qualcomm msm interface (qmi) device.
making umsm(4) attach to it is a good first start.
hopefully you'll be able to talk AT commands to one of the interfaces.
qmi devices are notoriously inconsistent and complicated, so what to do
next isnt clear. i would be trying to tell the modem to switch to mbim
mode and then figure out how to get umb(4) to attach. this is similar to
the changes i made to umsm and umb for quectel devices, but they
actually provided a decent manual.
Index: umsm.c
===================================================================
RCS file: /cvs/src/sys/dev/usb/umsm.c,v
retrieving revision 1.125
diff -u -p -r1.125 umsm.c
--- umsm.c 2 Apr 2023 23:57:57 -0000 1.125
+++ umsm.c 6 Apr 2023 08:40:30 -0000
@@ -271,6 +271,7 @@ static const struct umsm_type umsm_devs[
{{ USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AIRCARD_340U}, 0},
{{ USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_AIRCARD_770S}, 0},
{{ USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC7455}, 0},
+ {{ USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC7700}, 0},
{{ USB_VENDOR_SIMCOM, USB_PRODUCT_SIMCOM_SIM5320}, 0},
{{ USB_VENDOR_SIMCOM, USB_PRODUCT_SIMCOM_SIM7600E}, 0},
