genode/repos/dde_linux
Sebastian Sumpf 6d2c697da1 lxip: Fix timeout handling for 'schedule_timeout'
Up until now 'schedule_timeout' did only wait for the next signal to occur.
However, we might run into situations where there won't occur signals for longer
periods of time. Therefore, we took care of the respective timeout handling.

This commit also adds Genode's tracing support

Issue #1310
2015-02-16 13:40:34 +01:00
..
include wifi_drv: Port of the Linux wireless stack 2014-11-28 12:02:36 +01:00
lib usb_drv: Remote USB driver interface 2015-02-16 13:40:33 +01:00
patches usb: wacom touchscreen support 2014-12-19 13:58:48 +01:00
ports usb: wacom touchscreen support 2014-12-19 13:58:48 +01:00
run usb_drv: USB terminal driver 2015-02-16 13:40:34 +01:00
src lxip: Fix timeout handling for 'schedule_timeout' 2015-02-16 13:40:34 +01:00
lxip.list lxip: Add loopback device 2014-11-12 14:44:17 +01:00
Makefile Enable hash checks for ports mechanism 2014-05-27 13:45:03 +02:00
README usb: wacom touchscreen support 2014-12-19 13:58:48 +01:00
usb.list usb: wacom touchscreen support 2014-12-19 13:58:48 +01:00
wifi.list wifi_drv: Port of the Linux wireless stack 2014-11-28 12:02:36 +01:00

Device drivers ported from the Linux kernel

USB
###

Controller configuration
~~~~~~~~~~~~~~~~~~~~~~~~

The driver can be started using different or all USB controller types a platform
offers (USB 1.0/2.0/3.0). Note that not all controllers are supported by all
platforms.  Controllers can be enabled as attribute in the config node of the
driver.  Supported attributes are: 'uhci', 'ehci', and 'xhci'.


Configuration snippet to enable UHCI and EHCI

! <config uhci="yes" ehci="yes">

HID
~~~

Supports keyboard and mouse. A run script can be found under 'run/usb_hid.run'.

Configuration snippet:

!<start name="usb_drv">
!  <resource name="RAM" quantum="3M"/>
!  <provides><service name="Input"/></provides>
!  <config uhci="yes" ehci="yes" xhci="yes">
!    <hid/>
!  </config>
!</start>

Note: It has been observed that certain 1.0 versions of Qemu do not generate
mouse interrupts. The mouse driver should work correctly on Qemu 1.0.93 and
above.

HID - Touchscreen support
~~~~~~~~~~~~~~~~~~~~~~~~~

Touchscreen absolute coordinates must be calibrated (e.g. re-calculated) to
screen absolute coordinates. The screen resolution is not determined
automatically by the USB driver, but can be configured as sub node of the
hid xml tag:

!...
!<hid>
!  <screen x="1024" y="768"/>
!<hid/>
!...

Storage
~~~~~~~

Currently supports one USB storage device. Hot plugging has not been tested. A
run script can be found under 'run/usb_storage.run'.

Configuration snippet:

!<start name="usb_drv">
!  <resource name="RAM" quantum="2M"/>
!  <provides> <service name="Block"/> </provides>
!  <config><storage /></config>
!</start uhci="yes">


Network (Nic)
~~~~~~~~~~~~~

Configuration snippet:

!<start name="usb_drv">
!  <resource name="RAM" quantum="3M"/>
!  <provides>
!    <service name="Nic"/>
!    <service name="Input"/>
!  </provides>
!  <config ehci="yes" xhci="yes">
!    <nic mac="2e:60:90:0c:4e:01" />
!    <hid/>
!  </config>
!</start>

Please observe that this setup starts the HID and Nic service at the same time.
Also there is the 'mac' attribute where one can specify the hardware address of
the network interface. This is necessary in case the EEPROM of the network card
cannot be accessed via the host controller making it impossible to retrieve the
devices hardware address. If this is the case and no 'mac' attribute is given a
fallback address will be assigned to the network device. Note that the fallback
address will always be the same.

LXIP
####

LXIP is a port of the Linux TCP/IP stack to Genode. It is build as a shared
library named 'lxip.lib.so'. The IP stack can be interfaced using Genode's
version of 'libc' by linking your application to 'lxip_libc' plugin in your
'target.mk' file.

WIFI
####

The wifi_drv component is a port of the Linux mac802.11 stack, including the
iwlwifi driver as well as libnl and wpa_supplicant, to Genode.

Configuration snippet:

!<start name="wifi_drv">
!  <resource name="RAM" quantum="32M"/>
!  <provides><service name="Nic"/></provides>
!  <config>
!    <libc stdout="/dev/log" stderr="/dev/log" rtc="/dev/rtc">
!      <vfs>
!        <dir name="dev"> <log/> <rtc/>
!           <jitterentropy name="random"/>
!           <jitterentropy name="urandom"/>
!        </dir>
!        <inline name="wpa_supplicant.conf">
!network={
!  id_str="foobar"
!  ssid="foobar"
!  key_mgmt=WPA-PSK
!  psk="foobarfoobar"
!}
!        </inline>
!      </vfs>
!    </libc>
!  </config>
!  <route>
!    <service name="Rtc"> <any-child /> </service>
!    <any-service> <parent/> <any-child /> </any-service>
!  </route>
!</start