Looking at the RC algorithm this is no longer necessary.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Slow Antenna Diversity has been removed, these are remnants
of the old code.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Location: ath9k/<phy>/interrupt
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

A scan run after association would change sc_curmode which is
used to get the current rate table. This patch fixes it
by removing sc_curmode and setting the rate table in usage in cur_rate_table
on association.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

ANI can't be turned on/off dynamically yet, but the calculation
of the calibration period is wrong anyway. This patch fixes it.
Reported-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch kills ath9k's ath9k_opmode enum by replacing it with nl80211_iftype.
Signed-off-by: NColin McCabe <colin@cozybit.com>
Signed-off-by: NAndrey Yurovsky <andrey@cozybit.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Debugfs file location: ath9k/<wiphy>/dma
Contains values in DMA debug registers.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Make debugging configurable, and add a module parameter
to give the debug mask.
Add debug.c to hold all debug specific code.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Remove all the useless __func__ prefixes in debug messages,
and replace the DPRINTF macro with a function.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Hostapd now passes the HT parameters through the config()
callback, use these to set the appropriate channel in AP mode.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The TX channel width of the BSS can be obtained only after association.
In all cases, default to HT20 if HT is enabled, and set
chan width to HT40 only if the BSS supports it.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Merge core.c and base.c
Remove Antenna Diversity (unused now).
Remove unused chainmask handling code.
Comment, indentation scrub.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Also, use a helper function to setup RC status data
when processing completed TX descriptors.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace TRUE/FALSE macros with VALID/INVALID macros.
Follow a consistent variable convention.
Remove unnecessary comments.
Add all RC phy macros into a single enum.
Merge functions into reasonably sized entities.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Maintaining two sets of rate tables is redundant, remove one
and use struct ath_rate_table exclusively.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Remove the hack using vif, and use rate_driver_data within
skb->cb to hold driver specific rate information.
Setup the rate series in the skb's tx control area and remove
all references to ath9k specific rate series ( using struct ath_rc_series ).
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Move the hw rate tables to ath_softc, and access them directly.
tx_triglevel_max is global, move it to ath_rate_node.
Now that ath_rate_softc is gone, rate control attach becomes simpler.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Rate control init is now confined to itself, using the
HT capabilites of the STA from rate_init().
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Remove a lot of old, crufty code and make
RX status reporting a bit sane and clean.

Do not do anything to the RX skb before unmapping.
So in ath_rx_tasklet(), move the skb_put() after PCI unmap.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

 [ 6133.670329] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
 [ 6133.672802] IP: [<ffffffffa030fcf6>] ieee80211_stop_queues+0x26/0x40 [mac80211]
 [ 6133.672802] PGD 759dc067 PUD 74f1d067 PMD 0
 [ 6133.672802] Oops: 0002 [#1] PREEMPT SMP
 [ 6133.672802] last sysfs file: /sys/class/backlight/acpi_video0/brightness
 [ 6133.672802] CPU 0
 [ 6133.672802] Modules linked in: ath9k(-) mac80211 pciehp pci_hotplug arc4 ecb joydev pcmcia ppdev lp ppp_generic psmouse sg pcspkr s]
 [ 6133.735830] Pid: 4445, comm: rmmod Tainted: G        W  2.6.28-rc5-wl #1
 [ 6133.735830] RIP: 0010:[<ffffffffa030fcf6>]  [<ffffffffa030fcf6>] ieee80211_stop_queues+0x26/0x40 [mac80211]
 [ 6133.735830] RSP: 0018:ffff88007d1efd10  EFLAGS: 00010246
 [ 6133.735830] RAX: 0000000000000000 RBX: ffff880074f41aa0 RCX: 0000000000000000
 [ 6133.735830] RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff880074f40340
 [ 6133.735830] RBP: ffff880074990000 R08: 0000000000000000 R09: 000000000000224d
 [ 6133.735830] R10: 0000000000000000 R11: ffffffff8031dc70 R12: 0000000000000000
 [ 6133.735830] R13: 0000000000000001 R14: ffff880074f46c9c R15: 0000000000000000
 [ 6133.735830] FS:  00007f1e2e0bc6f0(0000) GS:ffffffff805e0b80(0000) knlGS:0000000000000000
 [ 6133.735830] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
 [ 6133.735830] CR2: 0000000000000010 CR3: 0000000075593000 CR4: 00000000000006e0
 [ 6133.735830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 [ 6133.735830] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
 [ 6133.735830] Process rmmod (pid: 4445, threadinfo ffff88007d1ee000, task ffff88007c0c8000)
 [ 6133.735830] Stack:
 [ 6133.735830]  ffffffffa034d583 ffff88007c7d9410 ffff88007c7d9410 ffff88007c7d9410
 [ 6133.735830]  ffffffff80481dab ffff880074f41aa0 00000000fffffff0 0000000000000000
 [ 6133.735830]  0000000000000001 0000000000000001 ffffffffa034d8a5 ffff88007c7d9400
 [ 6133.735830] Call Trace:
 [ 6133.735830]  [<ffffffffa034d583>] ? ath_radio_disable+0x33/0x150 [ath9k]
 [ 6133.735830]  [<ffffffff80481dab>] ? __mutex_lock_slowpath+0x20b/0x2a0
 [ 6133.735830]  [<ffffffffa034d8a5>] ? ath_sw_toggle_radio+0x65/0xa0 [ath9k]
 [ 6133.735830]  [<ffffffffa019d1f4>] ? rfkill_toggle_radio+0x74/0x140 [rfkill]
 [ 6133.735830]  [<ffffffffa019d597>] ? rfkill_remove_switch+0x67/0x80 [rfkill]
 [ 6133.735830]  [<ffffffffa019d955>] ? rfkill_unregister+0x25/0x50 [rfkill]
 [ 6133.735830]  [<ffffffffa034bf75>] ? ath_detach+0xf5/0x140 [ath9k]
 [ 6133.735830]  [<ffffffffa034bfe9>] ? ath_pci_remove+0x29/0x80 [ath9k]
 [ 6133.735830]  [<ffffffff8035263c>] ? pci_device_remove+0x2c/0x60
 [ 6133.735830]  [<ffffffff803c3829>] ? __device_release_driver+0x99/0x100
 [ 6133.735830]  [<ffffffff803c3950>] ? driver_detach+0xc0/0xd0
 [ 6133.735830]  [<ffffffff803c296e>] ? bus_remove_driver+0x8e/0xd0
 [ 6133.735830]  [<ffffffff80352916>] ? pci_unregister_driver+0x36/0xa0
 [ 6133.735830]  [<ffffffffa0356ad4>] ? exit_ath_pci+0x10/0x29 [ath9k]
 [ 6133.735830]  [<ffffffff8026bb1b>] ? sys_delete_module+0x1cb/0x2d0
 [ 6133.735830]  [<ffffffff802960d9>] ? do_munmap+0x349/0x390
 [ 6133.735830]  [<ffffffff80342d01>] ? __up_write+0x21/0x150
 [ 6133.735830]  [<ffffffff8020c45b>] ? system_call_fastpath+0x16/0x1b
 [ 6133.735830] Code: c3 0f 1f 40 00 0f b7 57 5e 0f b7 47 5c 01 c2 74 30 31 c9 66 90 48 8b 57 78 0f b7 c1 48 c1 e0 07 48 03 82 00 03 00
 [ 6133.735830] RIP  [<ffffffffa030fcf6>] ieee80211_stop_queues+0x26/0x40 [mac80211]
Signed-off-by: NVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Make the DMAable mameory consistent with pci_set_consistent_dma_mask().
The DMA-mapping.txt Documentation recommends this but for PCI-X
considerations and on strange architecture like SGI SN2, not sure
why it would fix an issue but lets see if it does, just in case.

Before this, this driver was tested with x86_64 with about
7 GB of RAM, not sure if this is really needed.
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use DMA_32BIT_MASK to clarify we only want 32-bit DMA
memory. What was there before is also 32-bit but this makes it
clearer
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Race condition causes RX buffers to be accessed even before it is
initialized. The RX and TX buffers are initialized immediately after
the hardware is registered with mac80211. The mac80211 start callback
is ready to be fired once the device is registered for a case when the
wpa_supplicant is also running at the same time.

The same race condition is also possible for RKFILL registration
as RFKILL init happens after the device registration with mac80211
and it is possible that rfkill_register would be called even before
it is initialized.
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

ath9k frees irq even before IRQs are disabled and existing IRQs
are flushed when rfkill_register() fails.
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Currently, ath9k builds RFKILL feature only when the RFKILL subsystem
is built part of the kernel. Build RFKILL feature regardless of whether
RFKILL subsystem is built as a MODULE or part of the kernel.
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch decodes the MAC/BB version (for instance: AR5416) and the RF
part version (for instance: AR5133). It has been tested on AR5416/AR5133
which is a 2.4/5GHz 11n device. It also makes the differences between
AR5416 (PCI) and AR5418 (PCI Express). Both are named AR5416 in
the register definitions.
Signed-off-by: NBenoit Papillault <benoit.papillault@free.fr>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Send a notification to the driver on succesful
reception of an ADDBA response, add IEEE80211_AMPDU_TX_RESUME
for this purpose.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

mac80211 has RX A-MPDU reordering support.
Use that and remove redundant RX processing within the driver.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Doing an interface down/up leaves the old HT assoc
information, clear it.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

config_interface() was the wrong place to enable interrupts
when bringing up an interface, move it to ath_open().
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The TSF is already reset properly via mac80211's callback.
Resetting it in config_interface() is not needed.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Simplify attach and detach routines by consolidating
the stop and suspend functions.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Remove the internal VAP management routines
and embed ath_vap in mac80211's driver private area
provided in ieee80211_vif.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Also, random indentation and whitespace cleanup.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use the ath_buf instance associated with each tx frame
directly and remove all redundant information in ath_tx_control.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Start removing the internal node list in ath9k, in preparation
for using mac80211's STA list.
Remove lists, locks, routines, flags, functions managing nodes in ath9k.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>