tree fdf901fe2d666805ad27a421b076cce2bfed7352
parent 32742e6158657f19ad31653705bef56d983508e7
author Inaky Perez-Gonzalez <inaky@linux.intel.com> 1252016069 -0700
committer Inaky Perez-Gonzalez <inaky@linux.intel.com> 1255935353 +0900

wimax/i2400m: rework bootrom initialization to be more flexible

This modifies the bootrom initialization code of the i2400m driver so
it can more easily support upcoming hardware.

Currently, the code detects two types of barkers (magic numbers) sent
by the device to indicate the types of firmware it would take (signed
vs non-signed).

This schema is extended so that multiple reboot barkers are
recognized; upcoming hw will expose more types barkers which will have
to match a header in the firmware image before we can load it.

For that, a barker database is introduced; the first time the device
sends a barker, it is matched in the database. That gives the driver
the information needed to decide how to upload the firmware and which
types of firmware to use. The database can be populated from module
parameters.

The execution flow is not altered; a new function
(i2400m_is_boot_barker) is introduced to determine in the RX path if
the device has sent a boot barker. This function is becoming heavier,
so it is put away from the hot reception path [this is why there is
some reorganization in sdio-rx.c:i2400ms_rx and
usb-notifc.c:i2400mu_notification_grok()].

The documentation on the process has also been updated.

All these modifications are heavily based on previous work by Dirk
Brandewie <dirk.brandewie@intel.com>.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>