A few issues wrt DMA were uncovered when using the driver with swiotlb.
- driver should not use memory after it has been mapped
- iwl3945's RX queue management cannot use all of iwlagn because
  the size of the RX buffer is different. Revert back to using
  iwl3945 specific routines that map/unmap memory.
- no need to "dma_syn_single_range_for_cpu" followed by pci_unmap_single,
  we can just call pci_unmap_single initially
- only map the memory area that will be used by device. this is especially
  relevant to the mapping of iwl_cmd. we should not map the entire
  structure because the meta data at the beginning of structure contains
  the address to be used later for unmapping. If the address to be used for
  unmapping is stored in mapped data it creates a problem.
- ensure that _if_ memory needs to be modified after it is mapped that we
  call _sync_single_for_cpu first, and then release it back to device with
  _sync_single_for_device
- we mapped the wrong length of data for host commands, with mapped length
  differing with length provided to device, fix that.

Thanks to Jason Andryuk <jandryuk@gmail.com> for significant bisecting
help to find these issues.

This fixes http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1964Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Tested-by: NJason Andryuk <jandryuk@gmail.com>
Tested-by: NBen Gamari <bgamari@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When debugging TX issues it is helpful to know the seq nr of the
frame being transmitted. The seq nr is printed as part of ucode's
log informing us which frame is being processed. Having this information
printed in driver log makes it easy to match activities between driver
and firmware.

Also make possible to print TX flags directly. These are already printed
as part of entire TX command, but having it printed directly in cpu format
makes it easier to look at.
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Users reported lockup with work still trying to run
after module has been unloaded.

http://thread.gmane.org/gmane.linux.kernel.wireless.general/30594/focus=30601Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Reported-by: NTJ <ubuntu@tjworld.net>
Reported-by: NHuaxu Wan <huaxu.wan@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

"not" is not printed without a space after %pM
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

I forgot that iwl3945 registration is separate from iwlagn.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix misspelling of firmware.
Signed-off-by: NNick Andrew <nick@nick-andrew.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

This patch removes all the virtual A-MPDU-queue bookkeeping from
mac80211. Curiously, iwlwifi already does its own bookkeeping, so
it doesn't require much changes except where it needs to handle
starting and stopping the queues in mac80211.

To handle the queue stop/wake properly, we rewrite the software
queue number for aggregation frames and internally to iwlwifi keep
track of the queues that map into the same AC queue, and only talk
to mac80211 about the AC queue. The implementation requires calling
two new functions, iwl_stop_queue and iwl_wake_queue instead of the
mac80211 counterparts.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Cc: Reinette Chattre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

A *leftover* stations is replaced with stations_39.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Patch fixes two checkpatch.pl errors.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Set IEEE80211_HW_SPECTRUM_MGMT bit in hw->flags, this tell mac80211
we support spectrum mgmt.
Signed-off-by: NMohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

allow user to set power level at all times
Signed-off-by: NMohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In function iwl3945_mac_config use changed flag to call only
the affected functions.
Signed-off-by: NMohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

iwl3945 uses iwl_tx_cmd_complete to reclaim the unused buffers of the queue.
iwl_tx_cmd_complete in turn call the iwl_hcmd_queue_reclaim which will
unmap the dma mapping to tx_cmd and frees the memory.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

3945 can now use iwl_led's structure from iwlwifi.
Patch also removes CONFIG_IWL3945_LEDS flag from Kconfig as 3945's led
support will now be enabled if user selects CONFIG_IWLWIFI_LEDS.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

error is:
iwl3945-base.c:545:5: warning: symbol 'iwl3945_set_dynamic_key' was not
declared. Should it be static?
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add check for new association to ease reading.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

3945 can use iwl_activate_qos instead of iwl3945_activate_qos.
Patch does two things
1) Patch adds iwl_activate_qos in core library.
2) 3945 makes use of iwl_activate_qos.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Patch does following,
1) mac80211's shared data is now initialized in iwl3945_setup_mac.
2) Set the rfkill to right state after initialization
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

for iwlagn:
- Have to free eeprom of version check fails - otherwise we end up with
  memory leak.
- Include removal of workqueue (created in _setup_deferred_work) in error
  handling.

for iwl3945:
- Fix a few places to jump to correct error handling.
- Reorganize error handling to match with code flow.
- Include iwl_free_channel_map as part of error handling.
- Include releasing eeprom as part of error handling.
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

unify the set key flow with iwlwifi.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In IBSS, TSF maintains local clock counters at each station. Network
Synchronization follows a completely distributed scheme where beacon frames
are generated. Each station maintain its own TSF timestamp, extracted from
beacon timestamps they recieved. Following patch synchronize this beacon timestamp
with uCode.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Both the agn and 3945 drivers has some problems with dealing with
errors in their probe functions. Ensure that a goto will undo only
things that was done before the goto was called.
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Patch unifies use of SW rfkill between 3945 and agn driver.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

iwl3945 uses iwl_isr and deletes duplicated iwl3945_isr.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Patch removes duplicate code to enable and disable interrupt.
iwl3945 now uses iwlwifi's functions.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Patch removes duplicate code from iwl3945 and uses
iwl_rx_reply_error and spectrum notifications from iwlwifi.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Patch removes duplicate rx handlers(pm_sleep and pm_debug) from 3945 and
uses handlers from iwlwifi.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

3945 can use iwl_mac_hw_scan callback instead of
iwl3945_mac_hw_scan callback.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Patch makes use of iwl_rx_scan handler for 3945.
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use one workqueue instead of one per CPU.
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch adds basic scan capability to cfg80211/nl80211 and
changes mac80211 to use it. The BSS list that cfg80211 maintains
is made driver-accessible with a private area in each BSS struct,
but mac80211 doesn't yet use it. That's another large project.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Here we do two things:

First, revert "iwlwifi: save PCI state before suspend, restore after
resume".  That misguided patch led to being unable to use iwlwifi
devices after resume.

Next, indicate to PCI driver that the saved PCI state is valid during suspend.

We restore PCI state and enable the device when network interface is created,
similarly PCI state is saved and the device is disabled when network interface
is removed. Thus, when .suspend is called the PCI state is saved and device
is disabled. This is the case even if an interface is never created as PCI
state is saved and device disabled during .probe.

PCI driver assumes PCI state is saved in .suspend. Saving the state at this
time will save state of disabled device and thus cause problems during
resume (resuming a disabled device). We thus indicate directly to PCI
driver that current PCI saved state is valid.
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Tested-by: NAlex Riesen <fork0@users.sf.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The base versions handle constant folding now.
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch unifies 3945 and iwlagn power save management
This patch also better separates system state from user setting.
System state shall be removed later as this shall be shifted to user space
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Acked-by: NMohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Call IWL_DEBUG macro with explicit priv argument.
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Acked-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

pci_enable_device is tagged with __must_check therefore
don't ignore the return value in pci_resume handlers
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch adds __maybe_unused attribute to priv variables used in
functions that used it solely for debug printouts
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Cc: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The iwl_rxon_cmd is really just a iwl3945_rxon_cmd structure extension.
So, we can use the *_rxon fields from iwl_priv instead of the 3945 specific
ones (*39_rxon). We have to then be careful when submitting REPLY_RXON host
commands, since the command length as to be set according to the HW. As
another precaution the reserved4 and reserved5 fields are cleared before being
sent to the 3945.

With the *39_rxon removal, a lot of duplicated code can be removed from the
3945 code base.
Signed-off-by: NSamuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This is the right thing to do and fixes the following warning:

[  115.012278] ------------[ cut here ]------------
[  115.012281] WARNING: at drivers/pci/pci-driver.c:370
pci_legacy_suspend+0x85/0xc2()
[  115.012285] Hardware name: Latitude D630
[  115.012301] PCI PM: Device state not saved by
iwl3945_pci_suspend+0x0/0x4c [iwl3945]
[  115.012304] Modules linked in: fuse nfsd lockd nfs_acl auth_rpcgss
exportfs sunrpc ipv6 acpi_cpufreq kvm_intel kvm snd_hda_codec_idt
snd_hda_intel snd_hda_codec snd_hwdep arc4 snd_seq_device snd_pcm_oss
snd_mixer_oss ecb snd_pcm cryptomgr aead snd_timer crypto_blkcipher
snd snd_page_alloc ohci1394 crypto_hash crypto_algapi ch341 ieee1394
usbserial thermal iwl3945 mac80211 led_class lib80211 tg3 processor
i2c_i801 i2c_core sg cfg80211 libphy usbhid battery ac button sr_mod
cdrom evdev dcdbas ata_generic ata_piix libata sd_mod scsi_mod ext3
jbd mbcache uhci_hcd ohci_hcd ehci_hcd usbcore [last unloaded:
microcode]
[  115.012374] Pid: 4163, comm: pm-suspend Not tainted
2.6.29-rc3-00227-gf1dd849-dirty #67
[  115.012377] Call Trace:
[  115.012382]  [<ffffffff8023d04d>] warn_slowpath+0xb1/0xed
[  115.012387]  [<ffffffff80450b5e>] ? _spin_unlock_irqrestore+0x5c/0x78
[  115.012390]  [<ffffffff80254f08>] ? up+0x34/0x39
[  115.012394]  [<ffffffff80362319>] ? acpi_ut_release_mutex+0x5d/0x61
[  115.012397]  [<ffffffff803584b2>] ? acpi_get_data+0x5e/0x70
[  115.012400]  [<ffffffff80363dd9>] ? acpi_bus_get_device+0x25/0x39
[  115.012403]  [<ffffffff80363e98>] ? acpi_bus_power_manageable+0x11/0x29
[  115.012406]  [<ffffffff803462f7>] ? acpi_pci_power_manageable+0x17/0x19
[  115.012410]  [<ffffffff8033ddfd>] ? pci_set_power_state+0xcc/0x101
[  115.012418]  [<ffffffffa01f28e9>] ? iwl3945_pci_suspend+0x0/0x4c [iwl3945]
[  115.012422]  [<ffffffff803401e6>] pci_legacy_suspend+0x85/0xc2
[  115.012425]  [<ffffffff80340316>] pci_pm_suspend+0x34/0x86
[  115.012429]  [<ffffffff8039d7ce>] pm_op+0x52/0xe5
[  115.012432]  [<ffffffff8039dd78>] device_suspend+0x32a/0x451
[  115.012436]  [<ffffffff80269ec2>] suspend_devices_and_enter+0x3e/0x13a
[  115.012439]  [<ffffffff8026a128>] enter_state+0x110/0x164
[  115.012442]  [<ffffffff8026a233>] state_store+0xb7/0xd7
[  115.012446]  [<ffffffff8032f95f>] kobj_attr_store+0x17/0x19
[  115.012449]  [<ffffffff80307d64>] sysfs_write_file+0xe4/0x119
[  115.012453]  [<ffffffff802baa7a>] vfs_write+0xae/0x137
[  115.012456]  [<ffffffff802babc7>] sys_write+0x47/0x70
[  115.012459]  [<ffffffff8020b73a>] system_call_fastpath+0x16/0x1b
[  115.012467] ---[ end trace 829828966f6f24dc ]---
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Tested-by: NMing Lei <tom.leiming@gmail.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>