iwlagn: move the check_empty logic to the transport layer

This logic is responsible to tell mac80211 when the HW queues are
empty and the BA session can be started / torn down.

Fix a bug on the way:
When the the Tx BA session is stopped and the HW queues aren't empty,
we stop the SW queue to drain the HW queue and then switch to the
legacy HW queue. This is the IWL_EMPTYING_HW_QUEUE_DELBA state.

While in this state, we never wake the SW queue, even when the HW
queue is almost empty, since we need to drain it completely. Look
at iwl_trans_pcie_reclaim regarding this.

Once the HW queue is really empty, we must wake the SW queue in order
to get traffic to the legacy queue.
This step was missing leading to an odd situation were the traffic
would just stall after we tore down a Tx BA session while the HW
queue was not empty.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: allocate resources for TX BA session in transport

The queues and all the related logic suits to the transport layer.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move the mapping ac to queue / fifo to transport

This mapping is transport related.
This allows us to remove the notion of tx queue from the tx path in
the upper layer.
iwl_wake_any_queue moved to transport layer since it needs to access
these mappings.
The TX API is nicer now:

int (*tx)(struct iwl_trans *trans, struct sk_buff *skb,
struct iwl_device_cmd *dev_cmd, u8 ctx, u8 sta_id);

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: upper layer uses slabs to allocate tx cmds

In a near future, the upper layer won't be aware of the tx queues.
This allows to remove one place where the upper layer needed to
provide the tx queue index to the transport layer.
This also saves around 1.5MB.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: set tx_fifo for ampdu in transport layer

the mapping tx_queue -> fifo is really transport related. The upper
layer should be involved in such things.

Note that upon agg_disable, the queue is always mapped to fifo 0, but
this doesn't matter since when the queue will be setup again for a
new BA session, it will be configured to the good fifo anyway.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: upper layer stores iwl_rxon_context in skb's CB

This removes the need for iwl_tx_info.
Each tx queue holds an array of skbs, the transport layer doesn't
need to know anything about the context in which a specific skb is
sent.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: stop the device before freeing it

When we remove the module, we free all the tx and rx resources.
Before doing that, we'd better stop the tx / rx activity. Calling
iwl_trans_stop_device in iwl_remove helps also to remove a few API
functions:
 * rx_free: happens in iwl_trans_free
 * tx_free: happens in iwl_trans_free
 * disable_sync_irq: happens in iwl_trans_stop_device

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove dereferences of priv from transport

There are still quite a few, but much less.
A few fields have been moved /copied to hw_params which sits in the
shared area:
 * priv->cfg->base_params->num_of_ampdu_queues
 * priv->cfg->base_params->shadow_reg_enable
 * priv->cfg->sku
 * priv->ucode_owner

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: iwl_tid_data moves to iwl-shared

The rate scaling and the transport need to access the data in
iwl_tid_data, hence the move.

Note that the only component in the upper layer that needs this data
is the rate scaling. Refactoring the rate scaling may help to move
iwl_tid_data from the shared area to the transport area.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: adding special "D" SKU for 2000 series

One more sku for 2000 series with different Subsystem ID

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: iwl-pci doesn't include iwl-dev any more

Move all the iwlXXX_abgn_cfg forward declaration to a separate file
so that iwl-pci.c doesn't need to include iwl-agn.h that includes
all iwl-dev.h
This allows to provide real encapsulation. Dereferencing iwl_priv
in the bus layer will now lead to a compilation error.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: fix compile warnings when CONFIG_PM_SLEEP is not set

  CC [M]  drivers/net/wireless/iwlwifi/iwl-pci.o
  drivers/net/wireless/iwlwifi/iwl-pci.c:506: warning: \91iwl_pci_suspend\92 defined but not used
  drivers/net/wireless/iwlwifi/iwl-pci.c:519: warning: \91iwl_pci_resume\92 defined but not used

These are only used if CONFIG_PM_SLEEP is enabled. CONFIG_PM depends
(CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME), so it can be set without
CONFIG_PM_SLEEP selected.

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: all function iwl-io.c receive iwl_bus

Which means that iwl-io.c doesn't need to include iwl-dev.h any more.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: add missing includes

a few h files weren't self contained. Fix that.
Move iwl_dma_ptr to transport layer since it is not used by the upper layer
any more.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move Keep Warm to transport layer

It is relevant for PCIe only.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: iwl-dev.h doesn't include iwl-fh.h any more

Since iwl-fh.h contains transport related data, it shouldn't be included by the
upper layer.
Only the transport layer and iwl-agn-ucode.c includes it.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove unused parameters from hw_params

Some of them weren't used at all, the others always had the same value since
the driver split.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove references to priv from the transport layer

Continue to the clean up of the priv dereferencing from the transport layer.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move dump_csr and dump_fh to transport layer

These are transport layer related. Move also the corresponding debugfs handlers.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move hcmd_lock to transport layer

Since it is needed for host commands only, it is needed in transport layer only

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: transport layer should receive iwl_trans

Change a lot of functions to have them receive iwl_trans and not iwl_priv.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move iwl_free_pages to iwl-shared.h

This helper is used by the transport and the upper layer.
Kill __iwl_free_pages which was used in the transport only.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move all iwl_is_XXX helpers to iwl-shared.h

Logic move after all priv->status moved to struct iwl_shared

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: fix the check of IWLAGN_FIRST_AMPDU_QUEUE

BUILD_BUG_ON(ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo) !=
IWLAGN_FIRST_AMPDU_QUEUE);

This check can be buggy. IWLAGN_FIRST_AMPDU_QUEUE has to be greater than the
ARRAY_SIZE of iwlagn_ipan_queue_to_tx_fifo.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move scd_bc_tbls and scd_base_addr to iwl_trans_pcie

Needed for PCIe only

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move reclaim related functions

Now that the reclaim flow has been moved to the transport layer, a lot of
functions can be made static or don't need to be exported outside the transport
layer.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: reclaim the packets in transport layer

The reclaim flow is really transport related. Define a simple API to allow the
upper layer to request from the transport layer to reclaim packets until an
index written in the Tx response / BA notification.
The transport layer prepares a list of the packets that are being freed and
passes this list to the upper layer.
Between the two layers, the CB of the skb is used to pass a pointer to the
context (BSS / PAN) in which the skb was sent.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move isr_statistics to transport layer

It is accessed by the transport layer only, hence the move.
The debugfs handlers that accessed it moved to the transport layer too.
The rx_handlers part of it stayed in the upper layer and a special debugfs
has been added for it

Also add missing includes to iwl-commands.h.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: add comments to module parameters

Add more comments to iwl_mod_params

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: more comments for bt channel inhibition

Add comments for better description

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: support small form factor SKU of 6205

Different subsystem ID

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: enable 11n aggregation without checking traffic load

Enable HT aggregation when it reach reasonable traffic without
checking traffic load which delay enabling the aggregation and lower
the throughput

but this behavior can be overwrite by module parameter

this address
https://bugzilla.kernel.org/show_bug.cgi?id=40042

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move the NIC error flow to the transport layer

It is transport dependent, move to the PCIe transport layer.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move ISR related data to transport layer

Since the ISR is entirely in the transport layer, its data should be in the pcie
specific region.
Change sync_irq to first disable and then synchronize the IRQ.
iwl_isr and iwl_isr_ict now receive iwl_trans.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: move iwl_suspend / iwl_resume to the transport layer

These flows needs to access the APM and a few other registers that can differ
between different transports.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: iwl_rx_queue moves to the iwl_trans_pcie

Since this struct is specific to pcie transport, move it the the pcie
specific transport layer.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: transport handler can register debugfs entries

Add a handler in iwl_trans_ops to allow it to add entries under debugfs dir
given by the upper level.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: add comments to iwl_bus / iwl_trans

Rename the recursive inclusion protection in iwl-bus.h while we are at it.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: bus layer chooses its transport layer

Remove iwl_transport_register which was a W/A. The bus layer knows what
transport to use. So now, the bus layer gives the upper layer a pointer to the
iwl_trans_ops struct that it wants to use. The upper layer then, allocates the
desired transport layer using iwl_trans_ops->alloc function.

As a result of this, priv->trans, no longer exists, priv holds a pointer to
iwl_shared, which holds a pointer to iwl_trans. This required to change all the
calls to the transport layer from upper layer. While we were at it, trans_X
inlines have been renamed to iwl_trans_X to avoid confusions, which of course
required to rename the functions inside the transport layer because of
conflicts in names. So the static API functions inside the transport layer
implementation have been renamed to iwl_trans_pcie_X.

Until now, the IRQ / Tasklet were initialized in iwl_transport_layer. This is
confusing since the registration doesn't mean to request IRQ, so I added a
handler for that.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: priv->sta_lock moves to iwl_shared

Since it is used by all the layers, it needs to move to iwl_shared.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: add IWL_DEBUG_FW_ERRORS

instead of IWL_DEBUG(priv, IWL_DL_FW_ERRORS

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: modify the debug macro to be usable by all the layers

Since all the layers need to print debug message, the debug macro cannot suppose
that they will be given iwl_priv as a parameter and then dereference it.
Use iwl_shared instead.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: priv->mutex moves to iwl_shared

Since it is used by all the layers, it needs to move to iwl_shared.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: priv->lock moves to iwl_shared

Since it is used by all the layers, it needs to move to iwl_shared.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: priv->status moves to iwl_shared

Since it is used by all the layers, it needs to move to iwl_shared.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: workqueue moves to iwl_shared

Since it is used by all the layers, it needs to move to iwl_shared.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: cmd_queue moves to iwl_shared

Since it is used by all the layers, it needs to move to iwl_shared.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: hw_params moves to iwl_shared

Since it is used by all the layers, it needs to move to iwl_shared.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: debug_level moves to struct iwl_shared

This will allow all the modules to look at it.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: introduce struct iwl-shared - known by all layers

This struct will hold pointers to all the layers, so that every layer will find
the pointers it needs when calling another layer.

Note that the drv_data set to struct device is now a pointer to
struct iwl_shared.
This solves of bug that I introduced in

iwlagn: simplify the bus architecture

Bug description:

sysfs gets the the driver data from struct device. Till the aforementioned
patch, dev_get_drvdata would return iwl_priv. After the patch, dev_get_drvdata
return iwl_bus which is buggy since the sysfs handlers rely on this value, and
sysfs handlers need iwl_priv.

Now, dev_get_drvdata return iwl-shared. Since we have pointers to all the
layers in iwl_shared, every layer will be able to get the pointer it needs:
bus layer will gets iwl_bus from the PCI suspend callbacks, and the sysfs
handlers will get the iwl_priv they need.

In order to keep good encapsulation, we need to avoid to dereference iwl_priv
from a different layer. This is why instead of including iwl-dev.h from
iwl-shared.h, I added a forward declaration to iwl_priv. Moreover we keep type
safety while providing encapsulation.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: introduce iwl-shared.h

It will hold declaration of functions and forward declaration of struct that
are used by several layers.
This will allow modules not to include iwl_priv. iwl_bus and iwl_trans are
still visible to all.

All the layers share the module parameters, move the struct to iwl-shared.h.
Also add all module parameters to iwl_mod_params instead of having them as
global static. This includes

* debug_level
* ant_coupling
* bt_ch_announce
* wanted_ucode_alternative

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: use iwl_get_debug_level instead of iwl_debug_level

The latter may return incomplete information.
For example, if one switched IWL_DL_TX on through sysfs, IWL_DL_TX bit would
have been set in priv->debug_level, but since iwl_alloc_traffic_mem looked at
iwl_debug_level only, it wouldn't have allocated the tx_traffic buffer.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: remove out-dated comments

Portion of iwl_cfg comments is not correct anymore, remove it.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlagn: Rename iwlcore prefix

There are number of functions with "iwlcore_" prefix which not feels right,
rename those to "iwl_".

No functional changes by making the renames.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: minor cleanup in ani

removed a function declaration, removed a variable, renamed a variable

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: use appropriate debug mask

in the Rx path of the driver it would be better to use ATH_DBG_ANY
rather than ATH_DBG_XMIT for printing debug messages

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

p54: Use do_div for 64-bit division to fix 32-bit kernels

Use the do_div macro for 64-bit division. Otherwise, the module will
reference __udivdi3 under 32-bit kernels, which is not allowed in
kernel space.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: add missing AR9340 in ath_mac_bb_names

AR9340 is not listed in ath_mac_bb_names, which leads to such a message:
ieee80211 phy0: Atheros AR???? Rev:0 mem=0xb8100000, irq=2

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: document wiphy->registered

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: refactor skb copy to failq in mesh_path_move_to_queue

This seems a bit less awkward...

Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/debugfs: Convert to kstrou8_from_user

This patch replaces the code for getting an number from a
userspace buffer by a simple call to kstrou8_from_user.
This makes it easier to read and less error prone.

Since the old buffer was only 10 bytes long and the value is masked by a
nibble-mask anyway, we don't need to use kstrtoul but rather kstrtou8.

Kernel Version: v3.0-rc2

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'for-linville' of git://git./linux/kernel/git/luca/wl12xx

ath9k: add AR9580 support

This has been tested in STA and AP mode by Florian.

Cc: David Quan <dquan@qca.qualcomm.com>
Cc: Kathy Giori <kgiori@qca.qualcomm.com>
Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

carl9170: Use do_div for 64-bit division to fix 32-bit kernels

Use the do_div macro for 64-bit division. Otherwise, the module will
reference __udivdi3 under 32-bit kernels, which is not allowed in
kernel space.

drivers/built-in.o: In function `carl9170_collect_tally':
cmd.c:191: undefined reference to `__udivdi3'
cmd.c:192: undefined reference to `__udivdi3'
cmd.c:193: undefined reference to `__udivdi3'

Reported-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Tested-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: add AR9580 support

Here are the AR9580 1.0 initvals checksums using the
Atheros initvals-tools [1]. This is useful for when
we udate the initvals again with other values. It ensures
that we match the same initvals used internally. The
tool is documented on the wiki [2].

$ ./initvals -f ar9580-1p0
0x00000000e912711f        ar9580_1p0_modes_fast_clock
0x000000004a488fc7        ar9580_1p0_radio_postamble
0x00000000f3888b02        ar9580_1p0_baseband_core
0x0000000003f783bb        ar9580_1p0_mac_postamble
0x0000000094be244a        ar9580_1p0_low_ob_db_tx_gain_table
0x0000000094be244a        ar9580_1p0_high_power_tx_gain_table
0x0000000090be244a        ar9580_1p0_lowest_ob_db_tx_gain_table
0x00000000ed9eaac6        ar9580_1p0_baseband_core_txfir_coeff_japan_2484
0x00000000c4d66d1b        ar9580_1p0_mac_core
0x00000000e8e9043a        ar9580_1p0_mixed_ob_db_tx_gain_table
0x000000003521a300        ar9580_1p0_wo_xlna_rx_gain_table
0x00000000301fc841        ar9580_1p0_soc_postamble
0x00000000a9a06b3a        ar9580_1p0_high_ob_db_tx_gain_table
0x00000000a15ccf1b        ar9580_1p0_soc_preamble
0x0000000029495000        ar9580_1p0_rx_gain_table
0x0000000037ac0ee8        ar9580_1p0_radio_core
0x00000000603a1b80        ar9580_1p0_baseband_postamble
0x000000003d8b4396        ar9580_1p0_pcie_phy_clkreq_enable_L1
0x00000000398b4396        ar9580_1p0_pcie_phy_clkreq_disable_L1
0x00000000397b4396        ar9580_1p0_pcie_phy_pll_on_clkreq

[1] git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/initvals-tool.git
[2] http://wireless.kernel.org/en/users/Drivers/ath9k_hw/initvals-tool

Cc: David Quan <dquan@qca.qualcomm.com>
Cc: Kathy Giori <kgiori@qca.qualcomm.com>
Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_htc: Add get_stats call back

currently this call back is used only in debugfs of mac80211

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: correct warning for uninitialized variable 'macstat'

  CC [M]  drivers/net/wireless/b43/pio.o
drivers/net/wireless/b43/pio.c: In function ‘pio_rx_frame’:
drivers/net/wireless/b43/pio.c:614:6: warning: ‘macstat’ may be used uninitialized in this function

Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove replicated null check in ath_pci_aspm_init

Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: HT-PHY: read clip state

We don't know yet when to restore it, implement just reading. We found
out what for are that PHY ops by comparing HT with N code.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: HT-PHY: use separated function for forcing RF sequence

Comparison of the HT and N code has shown similarities in the ops
performed after b43_mac_phy_clock_set. That way we understood what is
happening in the HT-PHY code.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

MAINTANERS: update Qualcomm Atheros addresses

Qualcomm ate up Atheros, all of the old e-mail addresses
no longer work and e-mails sent to it will bounce. Update
the addresses to the new shiny Qualcomm Atheros (QCA) ones.

Cc: stable@kernel.org
Cc: netdev@vger.kernel.org
Cc: jouni@qca.qualcomm.com
Cc: yangjie@qca.qualcomm.com
Cc: vthiagar@qca.qualcomm.com
Cc: senthilb@qca.qualcomm.com
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: relicense regulatory header to ISC

I will suck out stuff to userspace to start the regulatory
revampamp, this work will be permissively licensed.

Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: add uapsd_queues and max_sp params fields

Add uapsd_queues and max_sp fields to ieee80211_sta.
These fields might be needed by low-level drivers in
order to configure the AP.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

nl80211/cfg80211: add STA WME parameters

Add new NL80211_ATTR_STA_WME nested attribute that contains
wme params needed by the low-level driver (uapsd_queues and
max_sp).

Add these params to the station_parameters struct as well.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: allow action frames with unknown BSSID in GO mode

When operating as a P2P GO, we receive some P2P action frames where the
BSSID is set to the peer MAC address. Specifically, this occurs for
invitation responses. These are valid action frames and they should be
passed up.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Send legacy rated frames as unaggregated

Currently the aggregation is formed till the aggregation limit
is reached and the rate lookup is done for the first frame alone.
But there can be a legacy rated frames in tid queue. This patch
limits the subframe addition based on presence of legacy rate and
sends the legacy rated frames as unaggregated one.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: fix race condition between assoc_done and first EAP packet

When associating to an AP, the station might miss the first EAP
packet that the AP sends due to a race condition between the association
success procedure and the rx flow in mac80211.
In such cases, the packet might fall in ieee80211_rx_h_check due to
the fact that the relevant rx->sta wasn't allocated yet.
Allocation of the relevant station info struct before actually
sending the association request and setting it with a new
dummy_sta flag solve this problem.
The station will accept only EAP packets from the AP while it
is in the pre-association/dummy state.
This dummy station entry is not seen by normal sta_info_get()
calls, only by sta_info_get_bss_rx().
The driver is not notified for the first insertion of the
dummy station. The driver is notified only after the association
is complete and the dummy flag is removed from the station entry.
That way, all the rest of the code flow should be untouched by
this change.

Signed-off-by: Guy Eilam <guy@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: refactor sta_info_insert_rcu to 3 main stages

Divided the sta_info_insert_rcu function to 3 mini-functions:
sta_info_insert_check - the initial checks done when inserting
a new station
sta_info_insert_ibss - the function that handles the station
addition for IBSS interfaces
sta_info_insert_non_ibss - the function that handles the station
addition in other cases

The outer API was not changed.
The refactoring was done for better usage of the different
stages in the station addition in new scenarios added
in the next commit.

Signed-off-by: Guy Eilam <guy@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: drop Kconfig option of forcing PIO mode

We have module param called use_pio which is much easier to use.

Cc: Larry Finger <larry.finger@lwfinger.net>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: mesh gate fixes

Since a v1 of the mesh gate series was accidentally applied, this patch
contains the changes in v2.

These are:
- automatically make mesh gate a root node.
- use TU_TO_EXP_TIME macro.
- initialize timer instead of checking for NULL timer function.
- cleanups.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

libertas: update readme file

Since all wext specific code is removed, currently there is no
way to configure deep sleep mode. This patch removes deep sleep
configuration information in readme file.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192de: Convert to use the new rate-mapping routine in rtlwifi

This patch also deletes the now unused parts of rtl8192de/def.h.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192se: Convert to use the new rate-mapping routine in rtlwifi

This patch also deletes the now unused parts of rtl8192se/def.h.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192cu: Convert to use the new rate-mapping routine in rtlwifi

This patch also removes the now unused code from rtl8192ce/def.h.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192ce: Convert to use the new rate-mapping routine in rtlwifi

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: Install updated rate-mapping routine

In preparation for fixing the rate-mapping situation, place a driver-agnostic
version in rtlwifi. This one contains the updated rate incormation.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwifiex/scan.c: test the just-initialized value

Test the just-initialized value rather than some other one.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier x,y,f!={PTR_ERR,ERR_PTR,ERR_CAST};
statement S;
@@

x = f(...);
(
if (\(x == NULL\|IS_ERR(x)\)) S
|
*if (\(y == NULL\|IS_ERR(y)\))
 { ... when != x
   return ...; }
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43/legacy: Remove firmware IDs

This removes the "FWxx" ID strings from the b43 and b43legacy
drivers. They were once used to match a specific driver revision
to a set of firmware files. However, this is hardly useful today.
Additionally, the IDs are not updated and maintained properly, so
they might mislead users.

Signed-off-by: Michael Buesch <m@bues.ch>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: Disable Walsh spatial spreading for 2 chains

The Walsh bit is disabled for regulatory consideration.

FCC limit for walsh enable is lower than that for walsh disable. So
disabling walsh bit will not limit tx power/affect tx power even in
cases where we are not FCC limited (most client cards). If the tx
power is not FCC limited, then enabling/disabling walsh bit will
not affect Avg. EVM/overall performance in any visible manner.

Cc: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Change rate control to use legacy rate as last MRR

In congested network, having all rate reties at MCS rates
is failing to transmit the frame offenly. By the time reaching
the success rate set, the application gets timed out. One such
scenario is that authentication time out during 4-Way handshake.
This patch uses a legacy rate as last retry sequnce for
unaggregated frames or if the first selected rate's PER is ~80%
of max limit. And also observed from the tx status that the frame
was trasmitted successfully by using legacy rates.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: Fix descriptor status of TxOpExceeded

Cc: stable@kernel.org
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add support for get_stats callback

this useful for debugging and to keep track of success/failure of
frames such as ACK, RTS and FCS error count in a noisy environment

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

p54: improve site survey

The firmware keeps track of channel usage. This data can
be used by the automatic channel selection to find the best
channel.

Survey data from wlan4
frequency: 5200 MHz [in use]
noise: -91 dBm
channel active time: 811909 ms
channel busy time: 63395 ms
channel transmit time: 59636 ms
Survey data from wlan4
frequency: 5210 MHz
noise: -91 dBm
channel active time: 121 ms
channel busy time: 119 ms
channel transmit time: 0 ms

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

MAINTAINERS: Add NFC subsystem entry

Update MAINTAINERS with NFC subsystem and drivers entry.

Signed-off-by: Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

NFC: Reserve tx head and tail room

We can have the NFC core layer allocating the tx head and tail
room for the drivers and avoid 1 or more SKBs copy on write on
the Tx path.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

bcma: signedness bug in bcma_get_next_core()

The u32 would never be less than zero so the error handling would
break.  I changed it to s32 to match how bcma_erom_get_mst_port() is
declared.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: fix MGMT packets when using TKIP

Prevent 8 bytes from being truncated from MGMT packets
when using TKIP.

Signed-off-by: Bill Jordan <bjordan@rajant.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: warn when forcing PIO mode

We have resolved all the known issues with DMA mode, however some users
(or distros) are still forcing PIO mode by config files. Without
debugging enabled it's not noticable at all. Add the warning for them.

Cc: Gregory Bellier <gregory.bellier@gmail.com>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: fix EIFS value to microseconds

The EIFS value read from AR_D_GBL_IFS_EIFS register in core clocks and then
written back as microsecond value.

Signed-off-by: Alex Hacker <hacker@epn.ru>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

b43: LCN-PHY: init 0x2064 radio

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>