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While the usbatm core has had some support for using isoc urbs
for some time, there was no way for users to turn it on. While
use of isoc transfer should still be considered experimental, it
now works well enough to let users turn it on. Minidrivers signal
to the core that they want to use isoc transfer by setting the new
UDSL_USE_ISOC flag. The speedtch minidriver gets a new module
parameter enable_isoc (defaults to false), plus some logic that
checks for the existence of an isoc receive endpoint (not all
speedtouch modems have one).
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Have minidrivers and the core signal special requirements
using a flags field in struct usbatm_data. For the moment
this is only used to replace the need_heavy_init bind
parameter, but there'll be new flags in later patches.
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
More care on loading firmware, take into account fw->size can't be zero.
Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
A driver for USB ADSL modems based on the ADI eagle chipset using the
usb_atm infrastructure.
The managing part was taken from bsd ueagle driver, other parts were
written from scratch.
The driver uses the in-kernel firmware loader :
- to load a first usb firmware when the modem is in pre-firmware state
- to load the dsp firmware that are swapped in host memory.
- to load CMV (configuration and management variables) when the modem
boot. (We can't use options or sysfs for this as there many possible
values. See
https://mail.gna.org/public/eagleusb-dev/2005-04/msg00031.html for a
description of some)
- to load fpga code for 930 chipset.
The device had 4 endpoints :
* 2 for data (use by usbatm). The incoming
endpoint could be iso or bulk. The modem seems buggy and produce lot's
of atm errors when using it in bulk mode for speed > 3Mbps, so iso
endpoint is need for speed > 3Mbps. At the moment iso endpoint need a
patched usbatm library and for this reason is not included in this patch.
* One bulk endpoint for uploading dsp firmware
* One irq endpoint that notices the driver
- if we need to upload a page of the dsp firmware
- an ack for read or write CMV and the value (for the read case).
If order to make the driver cleaner, we design synchronous
(read|write)_cmv :
-send a synchronous control message to the modem
-wait for an ack or a timeout
-return the value if needed.
In order to run these synchronous usb messages we need a kernel thread.
The driver has been tested with sagem fast 800 modems with different
eagle chipset revision and with ADI 930 since April 2005.
Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
