wacom: SMAP Fixes and Refactoring

Utilize user_memcpy and IS_USER_ADDRESS when necessary to prevent SMAP violations.
Also add a "wacom_device_header" struct to more easily share data between the wac

wacom: SMAP Fixes and Refactoring

Utilize user_memcpy and IS_USER_ADDRESS when necessary to prevent SMAP violations.
Also add a "wacom_device_header" struct to more easily share data between the wacom
kernel driver and input_server addon.

Should fix #14589

Change-Id: Ie2784020b21523f82fd450a2db2de60ccf9d6620
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2783
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

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* Reworked debugging feature, it's now much more simple to use, copied
from the input_server implementation to create a log file.
* DeviceReader already provided the data byte count, since this is

* Reworked debugging feature, it's now much more simple to use, copied
from the input_server implementation to create a log file.
* DeviceReader already provided the data byte count, since this is a USB
only Wacom driver, we can simply use the max_packet_size from the endpoint
descriptor. Changed TabledDevice accordingly to use the already existing
DeviceReader::MaxPacketSize().
* Reworked DeviceReader::ReadData(). Renamed variables for clarity and
removed the restriction to read exactly the requested ammount of bytes,
reading more than the "header" (which contains vendor id, product id
and max packet size) is already considered a successful read.
* Refactored TabledDevice::poll_usb_device().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24018 a95241bf-73f2-0310-859d-f6bbb57e9c96

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* added an input_server add-on for interfacing with the wacom kernel driver
* the structure of the add-on was originally designed to handle all kinds of
different input devices, but has been limite

* added an input_server add-on for interfacing with the wacom kernel driver
* the structure of the add-on was originally designed to handle all kinds of
different input devices, but has been limited to handle Wacom tablets for
now, since our mouse add-on handles the rest already.
* various Wacom Tablets are supported including Cintiq Partner, Graphire,
Graphire2/3/4, Intuos, Intous2/3, PenStation, PenPartner and Volito

TODO: Currently, the add-on does not work for some reason, though the kernel
driver publishes a devfs entry and the input_server picks it up, the Wacom
device thread is running. Need to investigate...


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23667 a95241bf-73f2-0310-859d-f6bbb57e9c96

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