b5525a0f91
Add support to GSM 07.10 muxing protocol which is used to share the same UART for PPP and AT commands among other things. This allows e.g., the modem to send SMS and have PPP connection active at the same time. Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
116 lines
3.2 KiB
Plaintext
116 lines
3.2 KiB
Plaintext
# Copyright (c) 2020 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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config GSM_MUX
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bool "Enable GSM 07.10 muxing protocol"
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help
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Enable GSM 07.10 muxing protocol defined in
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https://www.etsi.org/deliver/etsi_ts/101300_101399/101369/07.01.00_60/ts_101369v070100p.pdf
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The muxing protocol allows GSM modem to share the same UART for both
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the PPP data and AT commands.
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config GSM_MUX_MAX
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int "Max number of GSM mux instances"
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default 1
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depends on GSM_MUX
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help
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Usually we only need one GSM mux instance. You need to increase
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this if you have more than one GSM modems.
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config GSM_MUX_DLCI_MAX
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int "Max number of GSM data link connection (DLC) instances"
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default 3
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range 1 64
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depends on GSM_MUX
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help
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For our purposes we will manage with 3 DLCI (control, ppp, and AT
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commands) so making it the default value. If GSM modem also provides
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GNSS (location) services and you want to create a DLCI for it, then
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you need to increase this to 4.
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config GSM_MUX_DLCI_AT
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int "DLCI id of the AT commands channel"
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default 2 if MODEM_GSM_SIMCOM
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default 1
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range 1 63
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depends on GSM_MUX
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help
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Channel number for the AT commands to the modem.
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config GSM_MUX_DLCI_PPP
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int "DLCI id of the PPP connection channel"
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default 1 if MODEM_GSM_SIMCOM
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default 2
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range 1 63
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depends on GSM_MUX
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help
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Channel number for the PPP connection to the modem.
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SIMCOM modem has 16kb buffer for DLCI 1 so the manual recommends
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it for PPP traffic. For other DLCIs in that modem, the buffer size
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is only 1kb.
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config GSM_MUX_PENDING_CMD_MAX
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int "Max number of pending GSM mux commands"
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default 2
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range 1 8
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depends on GSM_MUX
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help
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How many pending GSM mux commands can exists.
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config GSM_MUX_MRU_DEFAULT_LEN
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int "Default size of received user data (MRU)"
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default 127 if MODEM_GSM_SIMCOM
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default 31
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range 1 1509
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depends on GSM_MUX
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help
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Default MRU (Maximum Receive Unit) data size. The default
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value for Basic mode is 31 bytes. The 1509 limit comes from
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ublox-sara modem and it means we can transfer full Ethernet sized
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frame and muxing headers.
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config GSM_MUX_MRU_MAX_LEN
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int "Max size of received user data (MRU)"
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default 255 if MODEM_GSM_SIMCOM
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default 128
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range 1 1509
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depends on GSM_MUX
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help
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Max MRU (Maximum Receive Unit) data size. The default max
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value for Basic mode is 128 bytes.
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config GSM_MUX_INITIATOR
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bool "Are we the initiator of the connection"
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default y
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depends on GSM_MUX
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help
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Default value when deciding whether we are the initiator of the
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connection attempt. Normally this should be enabled.
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config GSM_MUX_T1_TIMEOUT
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int "T1 timeout in ms"
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default 0
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range 0 5000
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depends on GSM_MUX
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help
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T1 timeout is initial command timeout when establishing
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the connection. The value is in milliseconds. Zero value
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means that default (100 ms) specified in the code is used.
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if GSM_MUX
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module = GSM_MUX
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module-dep = LOG
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module-str = Log level for GSM 07.10 Mux driver
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module-help = Sets log level for GSM 07.10 Mux Device Driver.
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source "subsys/net/Kconfig.template.log_config.net"
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config GSM_MUX_VERBOSE_DEBUG
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bool "Print hexdump of sent and received packets"
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depends on GSM_MUX_LOG_LEVEL_DBG
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help
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As there might be lot of debug output printed, only enable
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this if really needed.
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endif
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