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Message-id: <1253727026-10233-1-git-send-email-sjur.brandeland@stericsson.com>
Date: Wed, 23 Sep 2009 19:30:26 +0200
From: sjur.brandeland@...ricsson.com
To: netdev@...r.kernel.org
Cc: Kim.xx.Lilliestierna@...csson.com, sjur.brandeland@...ricsson.com
Subject: [PATCH 1/8] [RFC] CAIF Protocol Stack
From: Kim Lilliestierna <Kim.xx.Lilliestierna@...csson.com>
Signed-off-by: sjur.brandeland@...ricsson.com
---
include/linux/caif/caif_config.h | 203 ++++++++++++++++++++++++++++++++++++++
include/linux/caif/caif_ioctl.h | 114 +++++++++++++++++++++
2 files changed, 317 insertions(+), 0 deletions(-)
create mode 100644 include/linux/caif/caif_config.h
create mode 100644 include/linux/caif/caif_ioctl.h
diff --git a/include/linux/caif/caif_config.h b/include/linux/caif/caif_config.h
new file mode 100644
index 0000000..6ea934b
--- /dev/null
+++ b/include/linux/caif/caif_config.h
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) ST-Ericsson AB 2009
+ *
+ * CAIF Channel Configuration definitions.
+ *
+ * Author: Sjur Brendeland/ sjur.brandeland@...ricsson.com
+ *
+ * License terms: GNU General Public License (GPL), version 2.
+ *
+ */
+
+#ifndef CAIF_CONFIG_H_
+#define CAIF_CONFIG_H_
+
+/**
+ * enum caif_phy_preference - Types of Physical HW Interfaces
+ * towards modem defined in CAIF Stack,
+ * @CAIF_PHYPREF_UNSPECIFIED: Default Physical Interface
+ * @CAIF_PHYPREF_LOW_LAT: Default Physical Interface for Low Latency
+ * Traffic
+ * @CAIF_PHYPREF_HIGH_BW: Default Physical Interface for High Bandwidth
+ * Traffic
+ * @_CAIF_PHYPREF_LOOP: TEST Loop-back Interface Simulating Acc side
+ * responses
+ * @_CAIF_PHYPREF_RAW_LOOP: TEST ONLY Raw loopback interface
+ *
+ * For Client convenience to special types are defined:
+ * CAIF_PHYPREF_LOW_LAT is the preferred low latency physical link.
+ * Typically used for "control" purposes.
+ * CAIF_PHYPREF_HIGH_BW is the preferred high bandwidth physical link.
+ * Typically used for "payload" purposes.
+ *
+ */
+enum caif_phy_preference {
+ CAIF_PHYPREF_UNSPECIFIED = 0x00,
+ CAIF_PHYPREF_LOW_LAT = 0xd0,
+ CAIF_PHYPREF_HIGH_BW = 0xe0,
+ _CAIF_PHYPREF_LOOP = 0x70,
+ _CAIF_PHYPREF_RAW_LOOP = 0x80
+};
+
+
+/*!
+ * define CAIF Channel Priority.
+ * Used when setting up a Channel to specify the
+ * priority level of the channel.
+ */
+
+#define CAIF_PRIO_UNSPCEIFIED 0x0
+#define CAIF_PRIO_MIN 0x01 /*! Minimum Priority Level */
+#define CAIF_PRIO_LOW 0x04 /*!< Suggested Priority Level for
+ * Low Priority Channel */
+#define CAIF_PRIO_NORMAL 0x0f /*!< Suggested Normal/Default
+ * priority Level */
+#define CAIF_PRIO_HIGH 0x14 /*!< Suggested High Priority Level */
+#define CAIF_PRIO_MAX 0x1F /*!< Max Priority for Channel
+ (do not use)
+ */
+
+/**
+ * enum caif_channel_type Types of CAIF Channel type defined in CAIF Stack.
+ * @CAIF_CHTY_AT: Classical AT
+ * @CAIF_CHTY_AT_CTRL: AT Control only
+ * @CAIF_CHTY_AT_PAIRED: Paired control and data
+ * @CAIF_CHTY_DATAGRAM: Datagram, Requires: connection_id
+ * @CAIF_CHTY_DATAGRAM_LOOP: Datagram Loopback (testing purposes only)
+ * @CAIF_CHTY_VIDEO: Video Channel
+ * @CAIF_CHTY_DEBUG: Debug Service (Debug Server and
+ * Interactive Debug)
+ * @CAIF_CHTY_DEBUG_TRACE: Debug Server only
+ * @CAIF_CHTY_DEBUG_INTERACT: Debug Interactive
+ * @CAIF_CHTY_RFM: RFM Service. Params: connection_id, volume
+ * @CAIF_CHTY_UTILITY: Utility (Psock) Service.
+ * Params: fifo_kb,fifo_pkt, name, psock_param
+ * @CAIF_CHTY_RAW: DO NOT USE. This is for testing only
+ *
+ * This is used for Channel Configuration specifying the type of channel.
+ */
+
+enum caif_channel_type {
+ CAIF_CHTY_AT,
+ CAIF_CHTY_AT_CTRL,
+ CAIF_CHTY_AT_PAIRED,
+ CAIF_CHTY_DATAGRAM,
+ CAIF_CHTY_DATAGRAM_LOOP,
+ CAIF_CHTY_VIDEO,
+ CAIF_CHTY_DEBUG,
+ CAIF_CHTY_DEBUG_TRACE,
+ CAIF_CHTY_DEBUG_INTERACT,
+ CAIF_CHTY_RFM,
+ CAIF_CHTY_UTILITY,
+ CAIF_CHTY_RAW
+};
+
+/**
+ *struct caif_channel_config This structures is used for configuring
+ * CAIF Channels.
+ * @name: Mandatory: Nickname for this device
+ * @type: Mandatory Define the type of caif service
+ * @priority: Mandatory Value between CAIF_PRIO_MIN and
+ * CAIF_PRIO_MAX,
+ * CAIF_PRIO_LOW, CAIF_PRIO_NORMAL, CAIF_PRIO_HIGH
+ * are suggested values.
+ * @phy_pref: Either: Specify type of physical interface to use.
+ * @phy_name: Or: Specify identity of the physical interface.
+ *
+ * @u: Union of Channel Type Specific configuration
+ * parameters
+ *
+ * @u.dgm: CAIF_CHTYPE_DATAGRAM
+ * @u.dgm.connection_id: Mandatory Connection ID must be specified.
+ *
+ * @u.video: CAIF_CHTYPE_VIDEO
+ * @u.video.connection_id: Mandatory Connection ID must be specified.
+ *
+ * @u.rfm CAIF_CHTYPE_RFM
+ * @u.rfm.connection_id: Mandatory Connection ID must be specified.
+ * @u.rfm.volume: Mandatory Volume to mount.
+ *
+ * @u.utility: CAIF_CHTYPE_UTILITY
+ * @u.utility.fifosize_kb: Psock: FIFO size in KB
+ * @u.utility.fifosize_bufs: Psock: # signal buffers
+ * @u.utility.name: Psock: Name of service
+ * @u.utility.params: Psock: Channel Config Parameters
+ * @u.utility.paramlen: Psock: Length of Channel Config Parameters
+ *
+ *
+ * It holds configuration parameters for setting up all devined CAIF
+ * Channel types.
+ * The four first fields are mandatory, then Physical Device can be specified
+ * either by name
+ * or by prefered characteristics.
+ * The rest of the configuration fields are hold in a union for each
+ * channel type and are channel type specific.
+ * \b Documentation see STE Doc No: 155 19-CRH 109 913.
+ */
+
+struct caif_channel_config {
+ /* Mandatory: Nickname for this device */
+ char name[16];
+ /* Mandatory: Define the type of caif service */
+ enum caif_channel_type type;
+ /** Mandatory: Mandatory - Value between
+ * CAIF_PRIO_MIN and CAIF_PRIO_MAX, CAIF_PRIO_LOW, CAIF_PRIO_NORMAL,
+ * CAIF_PRIO_HIGH are suggested values. */
+ unsigned priority;
+
+ /** Either: Specify type of physical interface to use. */
+ enum caif_phy_preference phy_pref;
+ /** Or: Specify identity of the physical interface. */
+ char phy_name[16];
+
+ /** Union of Channel Type Specific configuration parameters
+ * 'switched' by attribute type */
+ union {
+ /* CAIF_CHTYPE_DATAGRAM */
+ struct {
+ /** Mandatory Connection ID must be specified. */
+ unsigned connection_id;
+ } dgm;
+ /* CAIF_CHTYPE_VIDEO */
+ struct {
+ /** Datagram: Mandatory Connection ID Must be
+ * specified. */
+ unsigned connection_id;
+ } video;
+ /* CAIF_CHTYPE_RFM */
+ struct {
+ /** RFM: Mandatory Connection ID. */
+ unsigned connection_id;
+ /** RFM: Mandatory Volume to mount. */
+ char volume[20];
+ } rfm;
+ /* CAIF_CHTYPE_UTILITY */
+ struct {
+/** Psock: FIFO size in KB */
+ unsigned fifosize_kb;
+/** Psock: # signal buffers */
+ unsigned fifosize_bufs;
+/** Psock: Name of service */
+ char name[16];
+/** Psock: Channel Config Parameters> */
+ unsigned char params[256];
+/** Psock: Length of Channel Config Parameters */
+ int paramlen;
+ } utility;
+
+
+ /* Raw Data configuration: DO NOT USE,
+ * applies for testing only */
+
+ struct raw {
+ unsigned channeltype;
+ unsigned char endpoint:2;
+ unsigned char subtype:2;
+ unsigned char serviceconfig[512];
+ unsigned int service_length;
+ } _raw;
+ } u;
+
+};
+
+#endif /* CAIF_CONFIG_H_ */
diff --git a/include/linux/caif/caif_ioctl.h b/include/linux/caif/caif_ioctl.h
new file mode 100644
index 0000000..4fdd648
--- /dev/null
+++ b/include/linux/caif/caif_ioctl.h
@@ -0,0 +1,114 @@
+/*
+* Copyright (C) ST-Ericsson AB 2009
+*
+* Author: Daniel Martensson / Daniel.Martensson@...ricsson.com
+*
+* License terms: GNU General Public License (GPL), version 2.
+*
+*/
+
+
+
+
+
+
+#ifndef CAIF_IOCTL_H_
+#define CAIF_IOCTL_H_
+#include "caif_config.h"
+
+
+
+/*!\page caif_ioctl.h
+ * This file defines the management interface to CAIF.
+ * It defines how CAIF Channels are configured and become visible in Linux
+ * file system under "/dev/caifconfig".
+ *
+ *\b Example - creating a new AT character device:
+ * \code
+ fd = open("/dev/caifconfig",..);
+ struct caif_channel_create_action at_config = {
+ .name = "cnhl2",
+ .config = {
+ .channel = CAIF_CHTY_AT,
+ .phy_ref = CAIF_PHY_LOW_LAT,
+ .priority = CAIF_PRIO_HIGH
+ }};
+ ioctl(fd, CAIF_IOC_CONFIG_DEVICE,&at_config);
+ close(fd);
+ * \endcode
+ * This will cause a new AT channel to be available in at "/dev/chnl2".
+ * This CAIF channel can then be connected by using \ref open.
+ *
+*/
+
+/*! \addtogroup caif_ioctl
+ * Additional documentation for group `caif_config.h'
+ * @{
+ */
+
+
+
+/* Use 'g' as magic number. 'g' is the first free letter in
+ * Documentation/ioctl-number.txt*/
+#define CAIF_IOC_MAGIC 'g'
+#define DEVICE_NAME_LEN 16
+
+/* Specifies the type of device to create NET device or CHAR device*/
+enum caif_dev_type {
+ CAIF_DEV_CHR = 1,
+ CAIF_DEV_NET = 2
+};
+
+
+/** Used for identifying devices, PHY interfaces etc*/
+struct caif_device_name {
+ char name[DEVICE_NAME_LEN]; /*!< Device name */
+ enum caif_dev_type devtype; /*!< Device type */
+};
+
+
+/**
+ * CAIF ACTION for \ref CAIF_ACT_CHANNEL_CONFIG.
+ * This structure is used to configure a new CAIF Channel and
+ * create the corresponding character device.
+ */
+struct caif_channel_create_action {
+ /** \b in CAIF Configuration Request */
+ struct caif_channel_config config;
+ /** \b in/out Device name returned from ACTION */
+ struct caif_device_name name;
+ /** \b out Major device id */
+ int major;
+ /** \b out Minor device id */
+ int minor;
+};
+
+/**
+ * union caif_action
+ * This union is used to configure a new CAIF Channel and
+ */
+
+union caif_action {
+ struct caif_device_name delete_channel;
+ struct caif_channel_create_action create_channel;
+};
+
+
+/**
+ * CAIF IOCTL for \ref CAIF_IOC_CHANNEL_CONFIG.
+ * This structure is used to configure a new CAIF Channel and
+ * create the corresponding character device.
+ */
+
+/** Create and Configure a new CAIF device.
+ * Note that the device is not implicitly connected. */
+#define CAIF_IOC_CONFIG_DEVICE _IOWR(CAIF_IOC_MAGIC, 1,\
+struct caif_channel_create_action)
+
+/** Remove a CAIF device. Requires the device to be previously disconnected. */
+#define CAIF_IOC_REMOVE_DEVICE _IOWR(CAIF_IOC_MAGIC, 2,\
+ struct caif_device_name)
+#define CAIF__IOC_MAXNR 9
+/*! @} */
+
+#endif /* CAIF_IOCTL_H_ */
--
1.6.0.4
--
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