From ff497db295c8939c4badf9cbaf5f0679af8ada0a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 26 Jul 2019 09:51:30 -0300 Subject: docs: wimax: convert to ReST and add to admin-guide Manually convert wimax documentation to ReST and add theit to the Kernel doc body, inside the admin-guide. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Jonathan Corbet --- Documentation/wimax/README.i2400m | 260 -------------------------------------- Documentation/wimax/README.wimax | 81 ------------ 2 files changed, 341 deletions(-) delete mode 100644 Documentation/wimax/README.i2400m delete mode 100644 Documentation/wimax/README.wimax (limited to 'Documentation/wimax') diff --git a/Documentation/wimax/README.i2400m b/Documentation/wimax/README.i2400m deleted file mode 100644 index 7dffd8919cb0..000000000000 --- a/Documentation/wimax/README.i2400m +++ /dev/null @@ -1,260 +0,0 @@ - - Driver for the Intel Wireless Wimax Connection 2400m - - (C) 2008 Intel Corporation < linux-wimax@intel.com > - - This provides a driver for the Intel Wireless WiMAX Connection 2400m - and a basic Linux kernel WiMAX stack. - -1. Requirements - - * Linux installation with Linux kernel 2.6.22 or newer (if building - from a separate tree) - * Intel i2400m Echo Peak or Baxter Peak; this includes the Intel - Wireless WiMAX/WiFi Link 5x50 series. - * build tools: - + Linux kernel development package for the target kernel; to - build against your currently running kernel, you need to have - the kernel development package corresponding to the running - image installed (usually if your kernel is named - linux-VERSION, the development package is called - linux-dev-VERSION or linux-headers-VERSION). - + GNU C Compiler, make - -2. Compilation and installation - -2.1. Compilation of the drivers included in the kernel - - Configure the kernel; to enable the WiMAX drivers select Drivers > - Networking Drivers > WiMAX device support. Enable all of them as - modules (easier). - - If USB or SDIO are not enabled in the kernel configuration, the options - to build the i2400m USB or SDIO drivers will not show. Enable said - subsystems and go back to the WiMAX menu to enable the drivers. - - Compile and install your kernel as usual. - -2.2. Compilation of the drivers distributed as an standalone module - - To compile - -$ cd source/directory -$ make - - Once built you can load and unload using the provided load.sh script; - load.sh will load the modules, load.sh u will unload them. - - To install in the default kernel directories (and enable auto loading - when the device is plugged): - -$ make install -$ depmod -a - - If your kernel development files are located in a non standard - directory or if you want to build for a kernel that is not the - currently running one, set KDIR to the right location: - -$ make KDIR=/path/to/kernel/dev/tree - - For more information, please contact linux-wimax@intel.com. - -3. Installing the firmware - - The firmware can be obtained from http://linuxwimax.org or might have - been supplied with your hardware. - - It has to be installed in the target system: - * -$ cp FIRMWAREFILE.sbcf /lib/firmware/i2400m-fw-BUSTYPE-1.3.sbcf - - * NOTE: if your firmware came in an .rpm or .deb file, just install - it as normal, with the rpm (rpm -i FIRMWARE.rpm) or dpkg - (dpkg -i FIRMWARE.deb) commands. No further action is needed. - * BUSTYPE will be usb or sdio, depending on the hardware you have. - Each hardware type comes with its own firmware and will not work - with other types. - -4. Design - - This package contains two major parts: a WiMAX kernel stack and a - driver for the Intel i2400m. - - The WiMAX stack is designed to provide for common WiMAX control - services to current and future WiMAX devices from any vendor; please - see README.wimax for details. - - The i2400m kernel driver is broken up in two main parts: the bus - generic driver and the bus-specific drivers. The bus generic driver - forms the drivercore and contain no knowledge of the actual method we - use to connect to the device. The bus specific drivers are just the - glue to connect the bus-generic driver and the device. Currently only - USB and SDIO are supported. See drivers/net/wimax/i2400m/i2400m.h for - more information. - - The bus generic driver is logically broken up in two parts: OS-glue and - hardware-glue. The OS-glue interfaces with Linux. The hardware-glue - interfaces with the device on using an interface provided by the - bus-specific driver. The reason for this breakup is to be able to - easily reuse the hardware-glue to write drivers for other OSes; note - the hardware glue part is written as a native Linux driver; no - abstraction layers are used, so to port to another OS, the Linux kernel - API calls should be replaced with the target OS's. - -5. Usage - - To load the driver, follow the instructions in the install section; - once the driver is loaded, plug in the device (unless it is permanently - plugged in). The driver will enumerate the device, upload the firmware - and output messages in the kernel log (dmesg, /var/log/messages or - /var/log/kern.log) such as: - -... -i2400m_usb 5-4:1.0: firmware interface version 8.0.0 -i2400m_usb 5-4:1.0: WiMAX interface wmx0 (00:1d:e1:01:94:2c) ready - - At this point the device is ready to work. - - Current versions require the Intel WiMAX Network Service in userspace - to make things work. See the network service's README for instructions - on how to scan, connect and disconnect. - -5.1. Module parameters - - Module parameters can be set at kernel or module load time or by - echoing values: - -$ echo VALUE > /sys/module/MODULENAME/parameters/PARAMETERNAME - - To make changes permanent, for example, for the i2400m module, you can - also create a file named /etc/modprobe.d/i2400m containing: - -options i2400m idle_mode_disabled=1 - - To find which parameters are supported by a module, run: - -$ modinfo path/to/module.ko - - During kernel bootup (if the driver is linked in the kernel), specify - the following to the kernel command line: - -i2400m.PARAMETER=VALUE - -5.1.1. i2400m: idle_mode_disabled - - The i2400m module supports a parameter to disable idle mode. This - parameter, once set, will take effect only when the device is - reinitialized by the driver (eg: following a reset or a reconnect). - -5.2. Debug operations: debugfs entries - - The driver will register debugfs entries that allow the user to tweak - debug settings. There are three main container directories where - entries are placed, which correspond to the three blocks a i2400m WiMAX - driver has: - * /sys/kernel/debug/wimax:DEVNAME/ for the generic WiMAX stack - controls - * /sys/kernel/debug/wimax:DEVNAME/i2400m for the i2400m generic - driver controls - * /sys/kernel/debug/wimax:DEVNAME/i2400m-usb (or -sdio) for the - bus-specific i2400m-usb or i2400m-sdio controls). - - Of course, if debugfs is mounted in a directory other than - /sys/kernel/debug, those paths will change. - -5.2.1. Increasing debug output - - The files named *dl_* indicate knobs for controlling the debug output - of different submodules: - * -# find /sys/kernel/debug/wimax\:wmx0 -name \*dl_\* -/sys/kernel/debug/wimax:wmx0/i2400m-usb/dl_tx -/sys/kernel/debug/wimax:wmx0/i2400m-usb/dl_rx -/sys/kernel/debug/wimax:wmx0/i2400m-usb/dl_notif -/sys/kernel/debug/wimax:wmx0/i2400m-usb/dl_fw -/sys/kernel/debug/wimax:wmx0/i2400m-usb/dl_usb -/sys/kernel/debug/wimax:wmx0/i2400m/dl_tx -/sys/kernel/debug/wimax:wmx0/i2400m/dl_rx -/sys/kernel/debug/wimax:wmx0/i2400m/dl_rfkill -/sys/kernel/debug/wimax:wmx0/i2400m/dl_netdev -/sys/kernel/debug/wimax:wmx0/i2400m/dl_fw -/sys/kernel/debug/wimax:wmx0/i2400m/dl_debugfs -/sys/kernel/debug/wimax:wmx0/i2400m/dl_driver -/sys/kernel/debug/wimax:wmx0/i2400m/dl_control -/sys/kernel/debug/wimax:wmx0/wimax_dl_stack -/sys/kernel/debug/wimax:wmx0/wimax_dl_op_rfkill -/sys/kernel/debug/wimax:wmx0/wimax_dl_op_reset -/sys/kernel/debug/wimax:wmx0/wimax_dl_op_msg -/sys/kernel/debug/wimax:wmx0/wimax_dl_id_table -/sys/kernel/debug/wimax:wmx0/wimax_dl_debugfs - - By reading the file you can obtain the current value of said debug - level; by writing to it, you can set it. - - To increase the debug level of, for example, the i2400m's generic TX - engine, just write: - -$ echo 3 > /sys/kernel/debug/wimax:wmx0/i2400m/dl_tx - - Increasing numbers yield increasing debug information; for details of - what is printed and the available levels, check the source. The code - uses 0 for disabled and increasing values until 8. - -5.2.2. RX and TX statistics - - The i2400m/rx_stats and i2400m/tx_stats provide statistics about the - data reception/delivery from the device: - -$ cat /sys/kernel/debug/wimax:wmx0/i2400m/rx_stats -45 1 3 34 3104 48 480 - - The numbers reported are - * packets/RX-buffer: total, min, max - * RX-buffers: total RX buffers received, accumulated RX buffer size - in bytes, min size received, max size received - - Thus, to find the average buffer size received, divide accumulated - RX-buffer / total RX-buffers. - - To clear the statistics back to 0, write anything to the rx_stats file: - -$ echo 1 > /sys/kernel/debug/wimax:wmx0/i2400m_rx_stats - - Likewise for TX. - - Note the packets this debug file refers to are not network packet, but - packets in the sense of the device-specific protocol for communication - to the host. See drivers/net/wimax/i2400m/tx.c. - -5.2.3. Tracing messages received from user space - - To echo messages received from user space into the trace pipe that the - i2400m driver creates, set the debug file i2400m/trace_msg_from_user to - 1: - * -$ echo 1 > /sys/kernel/debug/wimax:wmx0/i2400m/trace_msg_from_user - -5.2.4. Performing a device reset - - By writing a 0, a 1 or a 2 to the file - /sys/kernel/debug/wimax:wmx0/reset, the driver performs a warm (without - disconnecting from the bus), cold (disconnecting from the bus) or bus - (bus specific) reset on the device. - -5.2.5. Asking the device to enter power saving mode - - By writing any value to the /sys/kernel/debug/wimax:wmx0 file, the - device will attempt to enter power saving mode. - -6. Troubleshooting - -6.1. Driver complains about 'i2400m-fw-usb-1.2.sbcf: request failed' - - If upon connecting the device, the following is output in the kernel - log: - -i2400m_usb 5-4:1.0: fw i2400m-fw-usb-1.3.sbcf: request failed: -2 - - This means that the driver cannot locate the firmware file named - /lib/firmware/i2400m-fw-usb-1.2.sbcf. Check that the file is present in - the right location. diff --git a/Documentation/wimax/README.wimax b/Documentation/wimax/README.wimax deleted file mode 100644 index b78c4378084e..000000000000 --- a/Documentation/wimax/README.wimax +++ /dev/null @@ -1,81 +0,0 @@ - - Linux kernel WiMAX stack - - (C) 2008 Intel Corporation < linux-wimax@intel.com > - - This provides a basic Linux kernel WiMAX stack to provide a common - control API for WiMAX devices, usable from kernel and user space. - -1. Design - - The WiMAX stack is designed to provide for common WiMAX control - services to current and future WiMAX devices from any vendor. - - Because currently there is only one and we don't know what would be the - common services, the APIs it currently provides are very minimal. - However, it is done in such a way that it is easily extensible to - accommodate future requirements. - - The stack works by embedding a struct wimax_dev in your device's - control structures. This provides a set of callbacks that the WiMAX - stack will call in order to implement control operations requested by - the user. As well, the stack provides API functions that the driver - calls to notify about changes of state in the device. - - The stack exports the API calls needed to control the device to user - space using generic netlink as a marshalling mechanism. You can access - them using your own code or use the wrappers provided for your - convenience in libwimax (in the wimax-tools package). - - For detailed information on the stack, please see - include/linux/wimax.h. - -2. Usage - - For usage in a driver (registration, API, etc) please refer to the - instructions in the header file include/linux/wimax.h. - - When a device is registered with the WiMAX stack, a set of debugfs - files will appear in /sys/kernel/debug/wimax:wmxX can tweak for - control. - -2.1. Obtaining debug information: debugfs entries - - The WiMAX stack is compiled, by default, with debug messages that can - be used to diagnose issues. By default, said messages are disabled. - - The drivers will register debugfs entries that allow the user to tweak - debug settings. - - Each driver, when registering with the stack, will cause a debugfs - directory named wimax:DEVICENAME to be created; optionally, it might - create more subentries below it. - -2.1.1. Increasing debug output - - The files named *dl_* indicate knobs for controlling the debug output - of different submodules of the WiMAX stack: - * -# find /sys/kernel/debug/wimax\:wmx0 -name \*dl_\* -/sys/kernel/debug/wimax:wmx0/wimax_dl_stack -/sys/kernel/debug/wimax:wmx0/wimax_dl_op_rfkill -/sys/kernel/debug/wimax:wmx0/wimax_dl_op_reset -/sys/kernel/debug/wimax:wmx0/wimax_dl_op_msg -/sys/kernel/debug/wimax:wmx0/wimax_dl_id_table -/sys/kernel/debug/wimax:wmx0/wimax_dl_debugfs -/sys/kernel/debug/wimax:wmx0/.... # other driver specific files - - NOTE: Of course, if debugfs is mounted in a directory other than - /sys/kernel/debug, those paths will change. - - By reading the file you can obtain the current value of said debug - level; by writing to it, you can set it. - - To increase the debug level of, for example, the id-table submodule, - just write: - -$ echo 3 > /sys/kernel/debug/wimax:wmx0/wimax_dl_id_table - - Increasing numbers yield increasing debug information; for details of - what is printed and the available levels, check the source. The code - uses 0 for disabled and increasing values until 8. -- cgit v1.2.3