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Date: Wed, 23 Sep 2009 19:30:23 +0200
From: sjur.brandeland@...ricsson.com
To: netdev@...r.kernel.org
Cc: Kim.xx.Lilliestierna@...csson.com
Subject: [PATCH 0/8] [RFC] CAIF Protocol Stack
Hello,
First of all, apologies for the size of this patch set,
but we like to get comments and feedback from this list.
We are working on a patch set in order to introduce the CAIF protocol in Linux.
CAIF (Communication CPU to Application CPU Interface) is the primary protocol
used to communicate between to ST-Ericsson modem and the external host system.
The host processes can use CAIF to open virtual AT channels, initiate GPRS Data
connections, Video channels and Utility Channels. The Utility Channels are
general-purpose pipes between modem and host.
ST-Ericsson modems support a number of Link Layers between modem and host,
currently Uart and Shared Memory are available for Linux, SPI is soon to come.
Architecture:
------------
The Implementation of CAIF is divided into:
* CAIF Devices Drivers: Character Device, Net Device and Kernel API.
* CAIF Protocol Implementation
* CAIF Link Layer
In order to configure the devices a set of IOCTLs is used.
IOCTL
!
! +------+ +------+ +------+
! +------+! +------+! +------+!
! ! Chr !! !Kernel!! ! Net !!
! ! Dev !+ ! API !+ ! Dev !+ <- CAIF Devices Drivers
! +------+ +------! +------+
! ! ! !
! +----------!----------+
! +------+ <- CAIF Protocol Implementation
+-------> ! CAIF ! /dev/caifconfig
+------+
+--------!--------+
! !
+------+ +-----+
!ShMem ! ! TTY ! <- Link Layer
+------+ +-----+
Any comments welcome.
The patch set is compiled on arm and 386 for 2.6.31.
We have split the patches up in the following way:
--- [1/8] User Space header files used in IOCTL
include/linux/caif/caif_config.h | 203 ++++++++++++++++++++++++++++++++++++++
include/linux/caif/caif_ioctl.h | 114 +++++++++++++++++++++
--- [2/8] Generic CAIF Protocol Stack header files
include/net/caif/generic/caif_layer.h | 378 +++++++++++++++++++++++++++++++++
include/net/caif/generic/cfcnfg.h | 223 +++++++++++++++++++
include/net/caif/generic/cfctrl.h | 139 ++++++++++++
include/net/caif/generic/cffrml.h | 29 +++
include/net/caif/generic/cfglue.h | 206 ++++++++++++++++++
include/net/caif/generic/cfloopcfg.h | 28 +++
include/net/caif/generic/cflst.h | 27 +++
include/net/caif/generic/cfmsll.h | 22 ++
include/net/caif/generic/cfmuxl.h | 30 +++
include/net/caif/generic/cfpkt.h | 246 +++++++++++++++++++++
include/net/caif/generic/cfserl.h | 22 ++
include/net/caif/generic/cfshml.h | 21 ++
include/net/caif/generic/cfspil.h | 80 +++++++
include/net/caif/generic/cfsrvl.h | 48 ++++
include/net/caif/generic/fcs.h | 22 ++
--- [3/8] c
include/net/caif/caif_actions.h | 81 +++++++++
include/net/caif/caif_chr.h | 52 ++++++
include/net/caif/caif_config_util.h | 27 +++
include/net/caif/caif_kernel.h | 324 +++++++++++++++++++++++++++++++++++
include/net/caif/caif_log.h | 83 +++++++++
--- [4/8] Generic CAIF Protocol Stack code
net/caif/generic/cfcnfg.c | 546 +++++++++++++++++++++++++++++++++
net/caif/generic/cfctrl.c | 641 +++++++++++++++++++++++++++++++++++++++
net/caif/generic/cfdgml.c | 119 ++++++++
net/caif/generic/cffrml.c | 146 +++++++++
net/caif/generic/cflist.c | 99 ++++++
net/caif/generic/cfloopcfg.c | 93 ++++++
net/caif/generic/cflooplayer.c | 116 +++++++
net/caif/generic/cfmsll.c | 55 ++++
net/caif/generic/cfmuxl.c | 263 ++++++++++++++++
net/caif/generic/cfpkt_skbuff.c | 590 +++++++++++++++++++++++++++++++++++
net/caif/generic/cfrfml.c | 112 +++++++
net/caif/generic/cfserl.c | 297 ++++++++++++++++++
net/caif/generic/cfshml.c | 67 ++++
net/caif/generic/cfspil.c | 245 +++++++++++++++
net/caif/generic/cfsrvl.c | 177 +++++++++++
net/caif/generic/cfutill.c | 115 +++++++
net/caif/generic/cfveil.c | 118 +++++++
net/caif/generic/cfvidl.c | 68 ++++
net/caif/generic/fcs.c | 58 ++++
--- [5/8] Device Drivers code: CHR device, NET device, CAIF Kernel API
net/caif/Kconfig | 61 +++
net/caif/Makefile | 62 +++
net/caif/caif_chnlif.c | 219 ++++++++
net/caif/caif_chr.c | 378 ++++++++++++++
net/caif/caif_config_util.c | 167 +++++++
net/caif/chnl_chr.c | 1161 +++++++++++++++++++++++++++++++++++++++++++
net/caif/chnl_net.c | 464 +++++++++++++++++
--- [6/8] 8
drivers/net/caif/Kconfig | 64 +++
drivers/net/caif/Makefile | 29 ++
drivers/net/caif/chnl_tty.c | 220 +++++++++++
drivers/net/caif/phyif_loop.c | 309 +++++++++++++++
drivers/net/caif/phyif_ser.c | 189 +++++++++
drivers/net/caif/phyif_shm.c | 870 +++++++++++++++++++++++++++++++++++++++++
drivers/net/caif/shm.h | 95 +++++
drivers/net/caif/shm_cfgifc.c | 60 +++
drivers/net/caif/shm_mbxifc.c | 98 +++++
drivers/net/caif/shm_smbx.c | 81 ++++
--- [7/8] Documentation
Documentation/CAIF/Linux-CAIF.txt | 319 +++++++++++++++++
Documentation/CAIF/README | 60 ++++
Documentation/CAIF/chardevconfig/Makefile | 11 +
Documentation/CAIF/chardevconfig/README | 39 ++
Documentation/CAIF/chardevconfig/caif_cmd_parse.c | 365 ++++++++++++++++++++
Documentation/CAIF/chardevconfig/chardevconfig.c | 111 ++++++
.../CAIF/chardevconfig/create_devices.config | 12 +
.../CAIF/chardevconfig/delete_devices.config | 12 +
Documentation/CAIF/ldiscd/ldiscd.c | 123 +++++++
--- [8/8] Kconfig and Makefiles
drivers/net/Makefile | 1 +
net/Kconfig | 1 +
net/Makefile | 1 +
Regards
Sjur Brændeland
ST-Ericsson
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