Since packets sent to an RA / TID in AGG are sent from a
separate HW Tx queue, we may get into a race:
the regular queue isn't empty while we already begin to
send packets from the AGG queue. This would result in sending
packets out of order.

In order to cope with this, mac80211 waits until the driver
reports that the legacy queue is drained before it can send
packets to the AGG queue. During that time, mac80211 buffers
packets for the driver. These packets will be sent in order
after the driver reports it is ready.

The way this was implemented in the driver is as follows:
We held a counter that monitors the number of packets for
an RA / TID in the HW queues. When this counter reached 0,
we knew that the HW queues were drained and we reported to
mac80211 that were ready to proceed.

This patch changes the implementation described above. We
now remember what is the wifi sequence number of the first
packet that will be sent in the AGG queue (lets' call it
ssn). When we reclaim the packet before ssn, we know that
the queue is drained, and we are ready to proceed.

This will allow us to move this logic in the upper layer and
eventually remove the tid_data from the shared area.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

ba_resp->seq_ctl is __le16, need to translate to cpu endianity.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Replace the engineering names with the marketing names for the
new devices.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Move the configuration pointer from the upper level iwl_priv to the
lower level iwl_shared structure, with associated code fixes.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

My previous patch
34a5b4b6 iwlwifi: do not re-configure
HT40 after associated

Fix the case of HT40 after association on specified AP, but it break the
association for some APs and cause not able to establish connection.
We need to address HT40 before and after addociation.

CC: stable@vger.kernel.org #3.0+
Reported-by: NAndrej Gelenberg <andrej.gelenberg@udo.edu>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Tested-by: NAndrej Gelenberg <andrej.gelenberg@udo.edu>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Ted reported that he couldn't connect to some APs
and bisected it to the tx_sync implementation.
Disable it for the BSS context to fix this issue.
Reported-by: NTed Ts'o <tytso@mit.edu>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Check the IEEE80211_TX_CTL_ASSIGN_SEQ flag from mac80211, then decide how to
set the TX_CMD_FLG_SEQ_CTL_MSK bit. Setting the wrong bit in BAR frame whill
make the firmware to increment the sequence number which is incorrect and
cause unknown behavior.

CC: stable@vger.kernel.org #3.0+
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

  It looks like the regression was introduced between 20111202 and
20111205 (linux-next tree). Symptoms: connection to AP seem to be
established, but no data goes though it in any way. Tested on intel
5300.
  Peek at the changes have shown that it looks like at least part of
the code wasn't merged properly. It was originally committed into
iwl_agn.c but code in question was moved to iwl-mac80211.c.
  This patch puts code in place and my card works again.
Signed-off-by: NNikolay Martynov <mar.kolya@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

We track the load only on 8 TIDs, previously this
was TID_MAX_LOAD_COUNT. Since IWL_MAX_TID_COUNT
is now 8 as well, use that to make the code more
easily understandable.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Now that I corrected IWL_MAX_TID_COUNT to be 8
instead of 9, we can use it in WoWLAN suspend.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

The driver everywhere uses max TID count as 9,
which is wrong, it should be 8.

I think the reason it uses 9 here is off-by-one
confusion by whoever wrote this. We do use the
value IWL_MAX_TID_COUNT for "not QoS/no TID"
but that is completely correct even if it is 8
and not 9 since 0-7 are only valid.

As a side effect, this fixes the following bug:

 Open BA session requested for 00:23:cd:16:8a:7e tid 8
 ------------[ cut here ]------------
 kernel BUG at drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h:350!
 ...

when you do
echo "tx start 8" > /sys/kernel/debug/ieee80211/*/*/*/*/agg_status

Cc: stable@vger.kernel.org
Reported-by: NNikolay Martynov <mar.kolya@gmail.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Move the calib_results list from the upper layer iwl_priv structure
to the lower layer iwl_trans structure.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Move the low level ucode device_pointers structure to iwl_shared.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

The eeprom image is a device level component, move from iwl_priv
to iwl_shared, with associated code changes.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

It is needed by firmware to use the correct rate for BAR frame transmission
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

P2P still under development. it will not enabled by default, but user
always can enable it manually for testing.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Create new tm command to report devce ID information to userspace
- IWL_TM_CMD_APP2DEV_GET_DEVICE_ID
Signed-off-by: NKenny Hsu <kenny.hsu@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Change the name to match the works
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

After driver split, no need to reference to legacy devices, remove comments
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Remove the defines only used by legacy devices
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

When uCode encounter problem, it pass a lot of debug data to help debugging
the issue. We only show partial data before, why not display all of those.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Because the testmode support should be the mandatory foundation
of test functionality, it is better to set kernel option
IWLWIFI_DEVICE_SVTOOL automatically instead of user configuration.
Signed-off-by: NKenny Hsu <kenny.hsu@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Create new tm command to report uCode version to userspace
- IWL_TM_CMD_APP2DEV_GET_FW_VERSION
Signed-off-by: NKenny Hsu <kenny.hsu@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>

Move the notification structures for ucode operations from the
iwl_priv structure to the iwl_shared structure, with associated
code changes.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Move the ucode_type variable from the iwl_priv to the iwl_shared
structure with associated code changes.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace the references to the iwl_priv structure with the iwl_trans
structure as the priv structure is never referenced other than to
access the trans structure.  Rename from iwlagn to iwl.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

iwl-agn-ucode is generic ucode operations, not limited just to iwlagn.
Signed-off-by: NDon Fry <donald.h.fry@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The file dealing with all the operations through testmode, rename it.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Create new tm command for WOWLAN uCode loading to support
further debugging function in userspace.

- IWL_TM_CMD_APP2DEV_LOAD_WOWLAN_FW
Signed-off-by: NKenny Hsu <kenny.hsu@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Using the actual shifted constants here allows
one to read and or them more easily.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This is only used for TX debugging where there
already is more debugging and tracing is more
useful anyway, so remove it.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This debug level is unused, remove it.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This macro is unused right now.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

Use generic chunk size of dumpit packet for
all necessary testmode commands instead of
add declaration individually.
Signed-off-by: NKenny Hsu <kenny.hsu@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The size of sram may alter according to ucode type.
Retrieve the maximum sram size by current ucode
type for range checking to prevent wrong data access.
Signed-off-by: NKenny Hsu <kenny.hsu@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Create new testmode commands and attributes to suppot
sram data reading. Because the amount of sram data
may exceed single skb packet size. Using the nl80211
dump it funtion to deliver sram data to userspace.

- IWL_TM_CMD_APP2DEV_READ_SRAM
- IWL_TM_CMD_APP2DEV_DUMP_SRAM
- IWL_TM_ATTR_SRAM_ADDR
- IWL_TM_ATTR_SRAM_SIZE
- IWL_TM_ATTR_SRAM_DUMP
Signed-off-by: NKenny Hsu <kenny.hsu@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The current default watchdog timer is enabled, but we are seeing issues on
legacy devices. So change the default setting of watchdog timer to per
device based. But user still can use the "wd_disable" module parameter
to overwrite the system setting

Cc: stable@vger.kernel.org #3.0+
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The ht40 setting should not change after association unless channel switch

This fix a problem we are seeing which cause uCode assert because driver
sending invalid information and make uCode confuse

Here is the firmware assert message:
kernel: iwlagn 0000:03:00.0: Microcode SW error detected.  Restarting 0x82000000.
kernel: iwlagn 0000:03:00.0: Loaded firmware version: 17.168.5.3 build 42301
kernel: iwlagn 0000:03:00.0: Start IWL Error Log Dump:
kernel: iwlagn 0000:03:00.0: Status: 0x000512E4, count: 6
kernel: iwlagn 0000:03:00.0: 0x00002078 | ADVANCED_SYSASSERT
kernel: iwlagn 0000:03:00.0: 0x00009514 | uPc
kernel: iwlagn 0000:03:00.0: 0x00009496 | branchlink1
kernel: iwlagn 0000:03:00.0: 0x00009496 | branchlink2
kernel: iwlagn 0000:03:00.0: 0x0000D1F2 | interruptlink1
kernel: iwlagn 0000:03:00.0: 0x00000000 | interruptlink2
kernel: iwlagn 0000:03:00.0: 0x01008035 | data1
kernel: iwlagn 0000:03:00.0: 0x0000C90F | data2
kernel: iwlagn 0000:03:00.0: 0x000005A7 | line
kernel: iwlagn 0000:03:00.0: 0x5080B520 | beacon time
kernel: iwlagn 0000:03:00.0: 0xCC515AE0 | tsf low
kernel: iwlagn 0000:03:00.0: 0x00000003 | tsf hi
kernel: iwlagn 0000:03:00.0: 0x00000000 | time gp1
kernel: iwlagn 0000:03:00.0: 0x29703BF0 | time gp2
kernel: iwlagn 0000:03:00.0: 0x00000000 | time gp3
kernel: iwlagn 0000:03:00.0: 0x000111A8 | uCode version
kernel: iwlagn 0000:03:00.0: 0x000000B0 | hw version
kernel: iwlagn 0000:03:00.0: 0x00480303 | board version
kernel: iwlagn 0000:03:00.0: 0x09E8004E | hcmd
kernel: iwlagn 0000:03:00.0: CSR values:
kernel: iwlagn 0000:03:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
kernel: iwlagn 0000:03:00.0:        CSR_HW_IF_CONFIG_REG: 0X00480303
kernel: iwlagn 0000:03:00.0:          CSR_INT_COALESCING: 0X0000ff40
kernel: iwlagn 0000:03:00.0:                     CSR_INT: 0X00000000
kernel: iwlagn 0000:03:00.0:                CSR_INT_MASK: 0X00000000
kernel: iwlagn 0000:03:00.0:           CSR_FH_INT_STATUS: 0X00000000
kernel: iwlagn 0000:03:00.0:                 CSR_GPIO_IN: 0X00000030
kernel: iwlagn 0000:03:00.0:                   CSR_RESET: 0X00000000
kernel: iwlagn 0000:03:00.0:                CSR_GP_CNTRL: 0X080403c5
kernel: iwlagn 0000:03:00.0:                  CSR_HW_REV: 0X000000b0
kernel: iwlagn 0000:03:00.0:              CSR_EEPROM_REG: 0X07d60ffd
kernel: iwlagn 0000:03:00.0:               CSR_EEPROM_GP: 0X90000001
kernel: iwlagn 0000:03:00.0:              CSR_OTP_GP_REG: 0X00030001
kernel: iwlagn 0000:03:00.0:                 CSR_GIO_REG: 0X00080044
kernel: iwlagn 0000:03:00.0:            CSR_GP_UCODE_REG: 0X000093bb
kernel: iwlagn 0000:03:00.0:           CSR_GP_DRIVER_REG: 0X00000000
kernel: iwlagn 0000:03:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
kernel: iwlagn 0000:03:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
kernel: iwlagn 0000:03:00.0:                 CSR_LED_REG: 0X00000078
kernel: iwlagn 0000:03:00.0:        CSR_DRAM_INT_TBL_REG: 0X88214dd2
kernel: iwlagn 0000:03:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
kernel: iwlagn 0000:03:00.0:             CSR_ANA_PLL_CFG: 0X00000000
kernel: iwlagn 0000:03:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
kernel: iwlagn 0000:03:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0010
kernel: iwlagn 0000:03:00.0: FH register values:
kernel: iwlagn 0000:03:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X21316d00
kernel: iwlagn 0000:03:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X021479c0
kernel: iwlagn 0000:03:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X00000060
kernel: iwlagn 0000:03:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80819104
kernel: iwlagn 0000:03:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
kernel: iwlagn 0000:03:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
kernel: iwlagn 0000:03:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
kernel: iwlagn 0000:03:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
kernel: iwlagn 0000:03:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
kernel: iwlagn 0000:03:00.0: Start IWL Event Log Dump: display last 20 entries
kernel: ------------[ cut here ]------------
WARNING: at net/mac80211/util.c:1208 ieee80211_reconfig+0x1f1/0x407()
kernel: Hardware name: 4290W4H
kernel: Pid: 1896, comm: kworker/0:0 Not tainted 3.1.0 #2
kernel: Call Trace:
kernel:  [<ffffffff81036558>] ? warn_slowpath_common+0x73/0x87
kernel:  [<ffffffff813b8966>] ? ieee80211_reconfig+0x1f1/0x407
kernel:  [<ffffffff8139e8dc>] ? ieee80211_recalc_smps_work+0x32/0x32
kernel:  [<ffffffff8139e95a>] ? ieee80211_restart_work+0x7e/0x87
kernel:  [<ffffffff810472fa>] ? process_one_work+0x1c8/0x2e3
kernel:  [<ffffffff810480c9>] ? worker_thread+0x17a/0x23a
kernel:  [<ffffffff81047f4f>] ? manage_workers.clone.18+0x15b/0x15b
kernel:  [<ffffffff81047f4f>] ? manage_workers.clone.18+0x15b/0x15b
kernel:  [<ffffffff8104ba97>] ? kthread+0x7a/0x82
kernel:  [<ffffffff813d21b4>] ? kernel_thread_helper+0x4/0x10
kernel:  [<ffffffff8104ba1d>] ? kthread_flush_work_fn+0x11/0x11
kernel:  [<ffffffff813d21b0>] ? gs_change+0xb/0xb

Cc: <stable@kernel.org> 3.1+
Reported-by: NUdo Steinberg <udo@hypervisor.org>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Group keys in IBSS or AP mode are not programmed
into the device since we give the key to it with
every TX packet. However, we do need mac80211 to
create the MMIC & PN in all cases. Move the code
around to set the key flags all the time. We set
them even when the key is removed again but that
is obviously harmless.

Cc: stable@vger.kernel.org
Reported-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>