Commit Graph

1658 Commits

Author SHA1 Message Date
David S. Miller
6373464288 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
Conflicts:
	drivers/net/wireless/iwlwifi/iwl-core.h
2010-01-19 11:43:42 -08:00
Reinette Chatre
bb5d2db570 iwlwifi: add license to tracing files
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-18 15:07:01 -05:00
Wey-Yi Guy
1152dcc28c iwlwifi: Fix throughput stall issue in HT mode for 5000
Similar to 6000 and 1000 series, RTS/CTS is the recommended protection
mechanism for 5000 series in HT mode based on the HW design.

Using RTS/CTS will better protect the inner exchange from interference,
especially in highly-congested environment, it also prevent uCode encounter
TX FIFO underrun and other HT mode related performance issues.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-18 15:07:00 -05:00
Linus Torvalds
4a24eef671 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (34 commits)
  net: fix build erros with CONFIG_BUG=n, CONFIG_GENERIC_BUG=n
  ipv6: skb_dst() can be NULL in ipv6_hop_jumbo().
  tg3: Update copyright and driver version
  tg3: Disable 5717 serdes and B0 support
  tg3: Add reliable serdes detection for 5717 A0
  tg3: Fix std rx prod ring handling
  tg3: Fix std prod ring nicaddr for 5787 and 57765
  sfc: Fix conditions for MDIO self-test
  sfc: Fix polling for slow MCDI operations
  e1000e: workaround link issues on busy hub in half duplex on 82577/82578
  e1000e: MDIO slow mode should always be done for 82577
  ixgbe: update copyright dates
  ixgbe: Do not attempt to perform interrupts in netpoll when down
  cfg80211: fix refcount imbalance when wext is disabled
  mac80211: fix queue selection for data frames on monitor interfaces
  iwlwifi: silence buffer overflow warning
  iwlwifi: disable tx on beacon update notification
  iwlwifi: fix iwl_queue_used bug when read_ptr == write_ptr
  mac80211: fix endian error
  mac80211: add missing sanity checks for action frames
  ...
2010-01-14 08:36:15 -08:00
H Hartley Sweeten
28f63a4bb7 iwl-debugfs.c: remove unnecessary casts of void *
void pointers do not need to be cast to other pointer types.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Zhu Yi <yi.zhu@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-12 14:20:45 -05:00
Wey-Yi Guy
8ce1ef4a91 iwlwifi: fix bug in tx byte count table
When setting invalid byte count in txq byte count table, read pointer
should be used instead of write pointer.

Reported-by: Guo, Chaohong <chaohong.guo@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-12 14:02:12 -05:00
Wey-Yi Guy
c15867f15f iwlwifi: remove obsoleted host command
"RADAR_NOTIFICATION" host command is not used and not supported by uCode,
remove it from driver code.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-12 14:02:11 -05:00
Wey-Yi Guy
f0118a4575 iwlwifi: ucode statistics data structure update
Update data structure to match latest statistics report from uCode.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-12 14:02:11 -05:00
Wey-Yi Guy
f05279711b iwlwifi: add IEEE80211_AMPDU_TX_OPERATIONAL
mac80211 do not check the return code now, what if mac80211 does start
using the return code? IEEE80211_AMPDU_TX_OPERATIONAL is a valid action,
just iwlwifi driver do not need to take any action for it; so instead of
return "-EINVAL", it is a good program practice to return "-EOPNOTSUPP"
to make sure mac80211 will not get wrong impression.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-12 14:02:11 -05:00
Dan Carpenter
39825f4dc9 iwlwifi: silence buffer overflow warning
Smatch (and presumably other static checkers) complain that MAX_TID_COUNT is
past the end of the array.  In the resulting discussion, Zhu Yi pointed out
that this value is not used in real life and the assignment was only there to
silence a gcc warning.

If there were a bug in the surrounding code and the value were used, the
WARN_ON(!qc) would print a warning before the crash.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-11 17:26:46 -05:00
Abhijeet Kolekar
c91c3efca5 iwlwifi: disable tx on beacon update notification
On beacon change update notification from mac we are not disabling
the tx in adhoc mode. Mac sends BSS_CHANGED_BEACON_ENABLED when
station leaves IBSS. Driver should indicate uCode to not to send
anything on receiving this notification.

Functionality to indicate uCode is duplicated across
two notifications so created a common function called iwl_set_no_assoc.

Fix the issue at
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2133.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Tested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-08 15:49:31 -05:00
Zhu Yi
c8106d7625 iwlwifi: fix iwl_queue_used bug when read_ptr == write_ptr
When txq read_ptr equals to write_ptr, iwl_queue_used should
always return false. Because there is no used TFD in this case.

This is a complementary fix to the fix already included in commit "iwl3945:
fix panic in iwl3945 driver". Both fixes are needed to address the panic
below.

This problem was discussed on linux-wireless in
http://thread.gmane.org/gmane.linux.kernel.wireless.general/43568

<1>[ 7290.414172] IP: [<ffffffffa0dd53a1>] iwl3945_rx_reply_tx+0xc1/0x450 [iwl3945]
<4>[ 7290.414205] PGD 0
<1>[ 7290.414214] Thread overran stack, or stack corrupted
<0>[ 7290.414229] Oops: 0002 [#1] PREEMPT SMP
<0>[ 7290.414246] last sysfs file: /sys/devices/platform/coretemp.1/temp1_input
<4>[ 7290.414265] CPU 0
<4>[ 7290.414274] Modules linked in: af_packet nfsd usb_storage usb_libusual cpufreq_powersave exportfs cpufreq_conservative iwl3945 nfs cpufreq_userspace snd_hda_codec_realtek acpi_cpufreq uvcvideo lockd iwlcore snd_hda_intel joydev coretemp nfs_acl videodev snd_hda_codec mac80211 v4l1_compat snd_hwdep sbp2 v4l2_compat_ioctl32 uhci_hcd psmouse auth_rpcgss ohci1394 cfg80211 ehci_hcd video ieee1394 snd_pcm serio_raw battery ac nvidia(P) usbcore output sunrpc evdev lirc_ene0100 snd_page_alloc rfkill tg3 libphy fuse lzo lzo_decompress lzo_compress
<6>[ 7290.414486] Pid: 0, comm: swapper Tainted: P           2.6.32-rc8-wl #213 Aspire 5720
<6>[ 7290.414507] RIP: 0010:[<ffffffffa0dd53a1>]  [<ffffffffa0dd53a1>] iwl3945_rx_reply_tx+0xc1/0x450 [iwl3945]
<6>[ 7290.414541] RSP: 0018:ffff880002203d60  EFLAGS: 00010246
<6>[ 7290.414557] RAX: 000000000000004f RBX: ffff880064c11600 RCX: 0000000000000013
<6>[ 7290.414576] RDX: ffffffffa0ddcf20 RSI: ffff8800512b7008 RDI: 0000000000000038
<6>[ 7290.414596] RBP: ffff880002203dd0 R08: 0000000000000000 R09: 0000000000000100
<6>[ 7290.414616] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000000a0
<6>[ 7290.414635] R13: 0000000000000002 R14: 0000000000000013 R15: 0000000000020201
<6>[ 7290.414655] FS:  0000000000000000(0000) GS:ffff880002200000(0000) knlGS:0000000000000000
<6>[ 7290.414677] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
<6>[ 7290.414693] CR2: 0000000000000041 CR3: 0000000001001000 CR4: 00000000000006f0
<6>[ 7290.414712] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<6>[ 7290.414732] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>[ 7290.414752] Process swapper (pid: 0, threadinfo ffffffff81524000, task ffffffff81528b60)
<0>[ 7290.414772] Stack:
<4>[ 7290.414780]  ffff880002203da0 0000000000000046 0000000000000000 0000000000000046
<4>[ 7290.414804] <0> 0000000000000282 0000000000000282 0000000000000282 ffff880064c12010
<4>[ 7290.414830] <0> ffff880002203db0 ffff880064c11600 ffff880064c12e50 ffff8800512b7000
<0>[ 7290.414858] Call Trace:
<0>[ 7290.414867]  <IRQ>
<4>[ 7290.414884]  [<ffffffffa0dc8c47>] iwl3945_irq_tasklet+0x657/0x1740 [iwl3945]
<4>[ 7290.414910]  [<ffffffff8138fc60>] ? _spin_unlock+0x30/0x60
<4>[ 7290.414931]  [<ffffffff81049a21>] tasklet_action+0x101/0x110
<4>[ 7290.414950]  [<ffffffff8104a3d0>] __do_softirq+0xc0/0x160
<4>[ 7290.414968]  [<ffffffff8100d01c>] call_softirq+0x1c/0x30
<4>[ 7290.414986]  [<ffffffff8100eff5>] do_softirq+0x75/0xb0
<4>[ 7290.415003]  [<ffffffff81049ee5>] irq_exit+0x95/0xa0
<4>[ 7290.415020]  [<ffffffff8100e547>] do_IRQ+0x77/0xf0
<4>[ 7290.415038]  [<ffffffff8100c7d3>] ret_from_intr+0x0/0xf
<0>[ 7290.415052]  <EOI>
<4>[ 7290.415067]  [<ffffffff81234efa>] ? acpi_idle_enter_bm+0x270/0x2a5
<4>[ 7290.415087]  [<ffffffff81234f04>] ? acpi_idle_enter_bm+0x27a/0x2a5
<4>[ 7290.415107]  [<ffffffff81234efa>] ? acpi_idle_enter_bm+0x270/0x2a5
<4>[ 7290.415130]  [<ffffffff812c11f3>] ? cpuidle_idle_call+0x93/0xf0
<4>[ 7290.415149]  [<ffffffff8100b0d7>] ? cpu_idle+0xa7/0x110
<4>[ 7290.415168]  [<ffffffff8137b3d5>] ? rest_init+0x75/0x80
<4>[ 7290.415187]  [<ffffffff8158cd0a>] ? start_kernel+0x3a7/0x3b3
<4>[ 7290.415206]  [<ffffffff8158c315>] ? x86_64_start_reservations+0x125/0x129
<4>[ 7290.415227]  [<ffffffff8158c3fd>] ? x86_64_start_kernel+0xe4/0xeb
<0>[ 7290.415243] Code: 00 41 39 ce 0f 8d e8 01 00 00 48 8b 47 40 48 63 d2 48 69 d2 98 00 00 00 4c 8b 04 02 48 c7 c2 20 cf dd a0 49 8d 78 38 49 8d 40 4f <c6> 47 09 00 c6 47 0c 00 c6 47 0f 00 c6 47 12 00 c6 47 15 00 49
<1>[ 7290.415382] RIP  [<ffffffffa0dd53a1>] iwl3945_rx_reply_tx+0xc1/0x450 [iwl3945]
<4>[ 7290.415410]  RSP <ffff880002203d60>
<0>[ 7290.415421] CR2: 0000000000000041
<4>[ 7290.415436] ---[ end trace ec46807277caa515 ]---
<0>[ 7290.415450] Kernel panic - not syncing: Fatal exception in interrupt
<4>[ 7290.415468] Pid: 0, comm: swapper Tainted: P      D    2.6.32-rc8-wl #213
<4>[ 7290.415486] Call Trace:
<4>[ 7290.415495]  <IRQ>  [<ffffffff8138c040>] panic+0x7d/0x13a
<4>[ 7290.415519]  [<ffffffff8101071a>] oops_end+0xda/0xe0
<4>[ 7290.415538]  [<ffffffff8102e1ea>] no_context+0xea/0x250
<4>[ 7290.415557]  [<ffffffff81038991>] ? select_task_rq_fair+0x511/0x780
<4>[ 7290.415578]  [<ffffffff8102e475>] __bad_area_nosemaphore+0x125/0x1e0
<4>[ 7290.415597]  [<ffffffff81038d0c>] ? __enqueue_entity+0x7c/0x80
<4>[ 7290.415616]  [<ffffffff81039201>] ? enqueue_task_fair+0x111/0x150
<4>[ 7290.415636]  [<ffffffff8102e53e>] bad_area_nosemaphore+0xe/0x10
<4>[ 7290.415656]  [<ffffffff8102e8fa>] do_page_fault+0x26a/0x320
<4>[ 7290.415674]  [<ffffffff813905df>] page_fault+0x1f/0x30
<4>[ 7290.415697]  [<ffffffffa0dd53a1>] ? iwl3945_rx_reply_tx+0xc1/0x450 [iwl3945]
<4>[ 7290.415723]  [<ffffffffa0dc8c47>] iwl3945_irq_tasklet+0x657/0x1740 [iwl3945]
<4>[ 7290.415746]  [<ffffffff8138fc60>] ? _spin_unlock+0x30/0x60
<4>[ 7290.415764]  [<ffffffff81049a21>] tasklet_action+0x101/0x110
<4>[ 7290.415783]  [<ffffffff8104a3d0>] __do_softirq+0xc0/0x160
<4>[ 7290.415801]  [<ffffffff8100d01c>] call_softirq+0x1c/0x30
<4>[ 7290.415818]  [<ffffffff8100eff5>] do_softirq+0x75/0xb0
<4>[ 7290.415835]  [<ffffffff81049ee5>] irq_exit+0x95/0xa0
<4>[ 7290.415852]  [<ffffffff8100e547>] do_IRQ+0x77/0xf0
<4>[ 7290.415869]  [<ffffffff8100c7d3>] ret_from_intr+0x0/0xf
<4>[ 7290.415883]  <EOI>  [<ffffffff81234efa>] ? acpi_idle_enter_bm+0x270/0x2a5
<4>[ 7290.415911]  [<ffffffff81234f04>] ? acpi_idle_enter_bm+0x27a/0x2a5
<4>[ 7290.415931]  [<ffffffff81234efa>] ? acpi_idle_enter_bm+0x270/0x2a5
<4>[ 7290.415952]  [<ffffffff812c11f3>] ? cpuidle_idle_call+0x93/0xf0
<4>[ 7290.415971]  [<ffffffff8100b0d7>] ? cpu_idle+0xa7/0x110
<4>[ 7290.415989]  [<ffffffff8137b3d5>] ? rest_init+0x75/0x80
<4>[ 7290.416007]  [<ffffffff8158cd0a>] ? start_kernel+0x3a7/0x3b3
<4>[ 7290.416026]  [<ffffffff8158c315>] ? x86_64_start_reservations+0x125/0x129
<4>[ 7290.416047]  [<ffffffff8158c3fd>] ? x86_64_start_kernel+0xe4/0xeb

Reported-by: Maxim Levitsky <maximlevitsky@gmail.com>
Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-08 15:49:30 -05:00
Alexey Dobriyan
a3aa18842a drivers/net/: use DEFINE_PCI_DEVICE_TABLE()
Use DEFINE_PCI_DEVICE_TABLE() so we get place PCI ids table into correct section
in every case.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-07 23:54:26 -08:00
John W. Linville
4f9b2a7dea Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
Conflicts:
	net/mac80211/iface.c
2010-01-05 17:18:59 -05:00
Zhu Yi
61b91c1ea3 iwlwifi: remove linux/utsrelease.h dependency
Commit 250cce26d5 uses UTS_RELEASE
as the the in-tree iwlwifi driver version. However the inclusion
of generated/utsrelease.h makes it a unpleasant behaviour to
recompile the driver everytime when utsrelease.h is updated. In
fact, the driver module is already built with the UTS_RELEASE
information via vermagic of modinfo. Mark the in-tree driver
with the version string "in-tree" to distinguish with those old
out-of-tree drivers.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-05 17:12:35 -05:00
Dan Carpenter
8a9ac160e8 iwl: off by one bug
tid is used as an array offset.
	agg = &priv->stations[sta_id].tid[tid].agg;
	iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);

It should be limitted to MAX_TID_COUNT - 1;
        struct iwl_tid_data tid[MAX_TID_COUNT];

regards,
dan carpenter

Signed-off-by: Dan Carpenter <error27@gmail.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-04 16:09:48 -05:00
David S. Miller
3a999e6eb5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-12-30 13:51:29 -08:00
Linus Torvalds
c3bf4906fb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (74 commits)
  Revert "b43: Enforce DMA descriptor memory constraints"
  iwmc3200wifi: fix array out-of-boundary access
  wl1251: timeout one too soon in wl1251_boot_run_firmware()
  mac80211: fix propagation of failed hardware reconfigurations
  mac80211: fix race with suspend and dynamic_ps_disable_work
  ath9k: fix missed error codes in the tx status check
  ath9k: wake hardware during AMPDU TX actions
  ath9k: wake hardware for interface IBSS/AP/Mesh removal
  ath9k: fix suspend by waking device prior to stop
  cfg80211: fix error path in cfg80211_wext_siwscan
  wl1271_cmd.c: cleanup char => u8
  iwlwifi: Storage class should be before const qualifier
  ath9k: Storage class should be before const qualifier
  cfg80211: fix race between deauth and assoc response
  wireless: remove remaining qual code
  rt2x00: Add USB ID for Linksys WUSB 600N rev 2.
  ath5k: fix SWI calibration interrupt storm
  mac80211: fix ibss join with fixed-bssid
  libertas: Remove carrier signaling from the scan code
  orinoco: fix GFP_KERNEL in orinoco_set_key with interrupts disabled
  ...
2009-12-30 12:37:35 -08:00
John W. Linville
891dc5e737 Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
Conflicts:
	drivers/net/wireless/libertas/scan.c
2009-12-30 15:25:08 -05:00
Johannes Berg
1ed32e4fc8 mac80211: remove struct ieee80211_if_init_conf
All its members (vif, mac_addr, type) are now available
in the vif struct directly, so we can pass that instead
of the conf struct. I generated this patch (except the
mac80211 and header file changes) with this semantic
patch:

@@
identifier conf, fn, hw;
type tp;
@@
tp fn(struct ieee80211_hw *hw,
-struct ieee80211_if_init_conf *conf)
+struct ieee80211_vif *vif)
{
<...
(
-conf->type
+vif->type
|
-conf->mac_addr
+vif->addr
|
-conf->vif
+vif
)
...>
}

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-28 16:55:07 -05:00
Tobias Klauser
79496738eb iwlwifi: Storage class should be before const qualifier
The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the beginning
of the declaration specifiers in a declaration is an obsolescent
feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-28 16:19:56 -05:00
Johannes Berg
671adc93b6 wireless: remove remaining qual code
This removes the remaining users of the rx status
'qual' field and the field itself.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-28 16:19:45 -05:00
John W. Linville
ea1e4b8420 Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2009-12-28 15:09:11 -05:00
David S. Miller
d346f49d0b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-12-25 16:34:56 -08:00
David S. Miller
b4de921ae6 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-12-23 14:09:17 -08:00
Emese Revfy
45d5d80598 iwlwifi: Constify struct iwl_ops
Signed-off-by: Emese Revfy <re.emese@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-22 13:56:09 -05:00
Johannes Berg
ba37a3d039 iwlwifi: use new mac80211 SMPS
Instead of hard-coding the SM PS mode per hardware,
this makes iwlwifi support the new mac80211 API for
controlling the SM PS mode.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-22 13:56:07 -05:00
Wey-Yi Guy
4309af2735 iwlwifi: remove extra error msg on sensitivity calibration
Do not need to log error when fail the sensitivity command, driver will send
sensitivity write command to uCode after each sensitivity calibration if
station is associated with AP. It is a normal case when user unload the module
or shutdown the system while still associated with the AP, since uCode already
on the way down, it will not reply the sensitivity write request; report
error in this case will give misleading information, remove the error checking
here to provide a clean shutdown if no other error detected.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 18:56:20 -05:00
Wey-Yi Guy
b03d7d0fd3 iwlwifi: on-screen event log dump
This feature enables the on-screen uCode event log dump. The original
method will append the event log to syslog; with this capability,
we also enable the user to write script to capture the
events which provide additional flexibility to help uCode debugging

Method
1) change to debugfs directory (sys/kernel/debug/phyX/iwlagn/data)
2) #cat log_event

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 18:56:18 -05:00
Wey-Yi Guy
a9e1cb6a78 iwlwifi: add continuous uCode event log capability
In order to help uCode debugging, adding the capability to provide
continuous uCode event logging function.

uCode events is located in round-robin event queue and filled by uCode,
by enable continuous event logging, driver check the write pointer
and log the newly added events in iwl_bg_ucode_trace() timer function.

There is still possibility of missing events if event queue being
wrapped before next event dump; but with this capability, we can have
much better understanding of the uCode behavior during runtime; it can
help to debug the uCode related issues.

Methods to enable/disable the continuous event log:
step 1: enable ucode trace timer
     "echo 1 >
/sys/kernel/debug/ieee80211/phyX/iwlagn/debug/ucode_tracing"
step 2: start ftrace
     sudo ./trace-cmd record -e iwlwifi_ucode:* sleep 1d
step 3: stop ftrace
     sudo ./trace-cmd report trace.dat
step 4: disable ucode trace timer
     "echo 0 >
/sys/kernel/debug/ieee80211/phyX/iwlagn/debug/ucode_tracing"

use "ucode_tracing" debugfs file to display number of event
queue wrapped when driver attempt the continuous event logging. If event
queue being wrapped more than once when driver has opportunity to log
the event; it indicated there are events missing in the event log trace.

This continuous event log function only available for 4965 and newer
NICs.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 18:56:16 -05:00
Wey-Yi Guy
696bdee3ba iwlwifi: dump "Control and Status Register" when detect uCode HW/SW error
When uCode HW/SW error detected, dumping important CSR (Control and Status
Registers) values.
Also add "csr" debugfs file to dump the current values of CSR defined in
CSR table to syslog.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 18:56:14 -05:00
Wey-Yi Guy
3a41bbd515 iwlwifi: log CT_CARD_DISABLED flag
Change name from RF_CARD_DISABLED to CT_CARD_DISABLED to match the
indication from uCode, also log the debug message when the condition
detected in iwl_rx_card_state_notif()

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 18:56:13 -05:00
akpm@linux-foundation.org
77ca7d9e2c drivers/net/wireless/iwlwifi/iwl-tx.c: fix gcc-3.4.5 warning
drivers/net/wireless/iwlwifi/iwl-tx.c: In function `iwl_hw_txq_ctx_free':
drivers/net/wireless/iwlwifi/iwl-tx.c:410: warning: suggest explicit braces to avoid ambiguous `else'

Cc: Zhu Yi <yi.zhu@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:32:22 -05:00
Reinette Chatre
6c3069b1e7 iwlwifi: fix 40MHz operation setting on cards that do not allow it
Some devices have 40MHz operation disabled entirely. Ensure that driver do
not enable 40MHz operation if a channel does not allow this.

This fixes http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2135

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:32:14 -05:00
Zhu Yi
dc57a303fa iwl3945: fix panic in iwl3945 driver
3945 updated write_ptr without regard to read_ptr on the Tx path.
This messes up our TFD on high load and result in the following:

<1>[ 7290.414172] IP: [<ffffffffa0dd53a1>] iwl3945_rx_reply_tx+0xc1/0x450 [iwl3945]
<4>[ 7290.414205] PGD 0
<1>[ 7290.414214] Thread overran stack, or stack corrupted
<0>[ 7290.414229] Oops: 0002 [#1] PREEMPT SMP
<0>[ 7290.414246] last sysfs file: /sys/devices/platform/coretemp.1/temp1_input
<4>[ 7290.414265] CPU 0
<4>[ 7290.414274] Modules linked in: af_packet nfsd usb_storage usb_libusual cpufreq_powersave exportfs cpufreq_conservative iwl3945 nfs cpufreq_userspace snd_hda_codec_realtek acpi_cpufreq uvcvideo lockd iwlcore snd_hda_intel joydev coretemp nfs_acl videodev snd_hda_codec mac80211 v4l1_compat snd_hwdep sbp2 v4l2_compat_ioctl32 uhci_hcd psmouse auth_rpcgss ohci1394 cfg80211 ehci_hcd video ieee1394 snd_pcm serio_raw battery ac nvidia(P) usbcore output sunrpc evdev lirc_ene0100 snd_page_alloc rfkill tg3 libphy fuse lzo lzo_decompress lzo_compress
<6>[ 7290.414486] Pid: 0, comm: swapper Tainted: P           2.6.32-rc8-wl #213 Aspire 5720
<6>[ 7290.414507] RIP: 0010:[<ffffffffa0dd53a1>]  [<ffffffffa0dd53a1>] iwl3945_rx_reply_tx+0xc1/0x450 [iwl3945]
<6>[ 7290.414541] RSP: 0018:ffff880002203d60  EFLAGS: 00010246
<6>[ 7290.414557] RAX: 000000000000004f RBX: ffff880064c11600 RCX: 0000000000000013
<6>[ 7290.414576] RDX: ffffffffa0ddcf20 RSI: ffff8800512b7008 RDI: 0000000000000038
<6>[ 7290.414596] RBP: ffff880002203dd0 R08: 0000000000000000 R09: 0000000000000100
<6>[ 7290.414616] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000000a0
<6>[ 7290.414635] R13: 0000000000000002 R14: 0000000000000013 R15: 0000000000020201
<6>[ 7290.414655] FS:  0000000000000000(0000) GS:ffff880002200000(0000) knlGS:0000000000000000
<6>[ 7290.414677] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
<6>[ 7290.414693] CR2: 0000000000000041 CR3: 0000000001001000 CR4: 00000000000006f0
<6>[ 7290.414712] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<6>[ 7290.414732] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>[ 7290.414752] Process swapper (pid: 0, threadinfo ffffffff81524000, task ffffffff81528b60)
<0>[ 7290.414772] Stack:
<4>[ 7290.414780]  ffff880002203da0 0000000000000046 0000000000000000 0000000000000046
<4>[ 7290.414804] <0> 0000000000000282 0000000000000282 0000000000000282 ffff880064c12010
<4>[ 7290.414830] <0> ffff880002203db0 ffff880064c11600 ffff880064c12e50 ffff8800512b7000
<0>[ 7290.414858] Call Trace:
<0>[ 7290.414867]  <IRQ>
<4>[ 7290.414884]  [<ffffffffa0dc8c47>] iwl3945_irq_tasklet+0x657/0x1740 [iwl3945]
<4>[ 7290.414910]  [<ffffffff8138fc60>] ? _spin_unlock+0x30/0x60
<4>[ 7290.414931]  [<ffffffff81049a21>] tasklet_action+0x101/0x110
<4>[ 7290.414950]  [<ffffffff8104a3d0>] __do_softirq+0xc0/0x160
<4>[ 7290.414968]  [<ffffffff8100d01c>] call_softirq+0x1c/0x30
<4>[ 7290.414986]  [<ffffffff8100eff5>] do_softirq+0x75/0xb0
<4>[ 7290.415003]  [<ffffffff81049ee5>] irq_exit+0x95/0xa0
<4>[ 7290.415020]  [<ffffffff8100e547>] do_IRQ+0x77/0xf0
<4>[ 7290.415038]  [<ffffffff8100c7d3>] ret_from_intr+0x0/0xf
<0>[ 7290.415052]  <EOI>
<4>[ 7290.415067]  [<ffffffff81234efa>] ? acpi_idle_enter_bm+0x270/0x2a5
<4>[ 7290.415087]  [<ffffffff81234f04>] ? acpi_idle_enter_bm+0x27a/0x2a5
<4>[ 7290.415107]  [<ffffffff81234efa>] ? acpi_idle_enter_bm+0x270/0x2a5
<4>[ 7290.415130]  [<ffffffff812c11f3>] ? cpuidle_idle_call+0x93/0xf0
<4>[ 7290.415149]  [<ffffffff8100b0d7>] ? cpu_idle+0xa7/0x110
<4>[ 7290.415168]  [<ffffffff8137b3d5>] ? rest_init+0x75/0x80
<4>[ 7290.415187]  [<ffffffff8158cd0a>] ? start_kernel+0x3a7/0x3b3
<4>[ 7290.415206]  [<ffffffff8158c315>] ? x86_64_start_reservations+0x125/0x129
<4>[ 7290.415227]  [<ffffffff8158c3fd>] ? x86_64_start_kernel+0xe4/0xeb
<0>[ 7290.415243] Code: 00 41 39 ce 0f 8d e8 01 00 00 48 8b 47 40 48 63 d2 48 69 d2 98 00 00 00 4c 8b 04 02 48 c7 c2 20 cf dd a0 49 8d 78 38 49 8d 40 4f <c6> 47 09 00 c6 47 0c 00 c6 47 0f 00 c6 47 12 00 c6 47 15 00 49
<1>[ 7290.415382] RIP  [<ffffffffa0dd53a1>] iwl3945_rx_reply_tx+0xc1/0x450 [iwl3945]
<4>[ 7290.415410]  RSP <ffff880002203d60>
<0>[ 7290.415421] CR2: 0000000000000041
<4>[ 7290.415436] ---[ end trace ec46807277caa515 ]---
<0>[ 7290.415450] Kernel panic - not syncing: Fatal exception in interrupt
<4>[ 7290.415468] Pid: 0, comm: swapper Tainted: P      D    2.6.32-rc8-wl #213
<4>[ 7290.415486] Call Trace:
<4>[ 7290.415495]  <IRQ>  [<ffffffff8138c040>] panic+0x7d/0x13a
<4>[ 7290.415519]  [<ffffffff8101071a>] oops_end+0xda/0xe0
<4>[ 7290.415538]  [<ffffffff8102e1ea>] no_context+0xea/0x250
<4>[ 7290.415557]  [<ffffffff81038991>] ? select_task_rq_fair+0x511/0x780
<4>[ 7290.415578]  [<ffffffff8102e475>] __bad_area_nosemaphore+0x125/0x1e0
<4>[ 7290.415597]  [<ffffffff81038d0c>] ? __enqueue_entity+0x7c/0x80
<4>[ 7290.415616]  [<ffffffff81039201>] ? enqueue_task_fair+0x111/0x150
<4>[ 7290.415636]  [<ffffffff8102e53e>] bad_area_nosemaphore+0xe/0x10
<4>[ 7290.415656]  [<ffffffff8102e8fa>] do_page_fault+0x26a/0x320
<4>[ 7290.415674]  [<ffffffff813905df>] page_fault+0x1f/0x30
<4>[ 7290.415697]  [<ffffffffa0dd53a1>] ? iwl3945_rx_reply_tx+0xc1/0x450 [iwl3945]
<4>[ 7290.415723]  [<ffffffffa0dc8c47>] iwl3945_irq_tasklet+0x657/0x1740 [iwl3945]
<4>[ 7290.415746]  [<ffffffff8138fc60>] ? _spin_unlock+0x30/0x60
<4>[ 7290.415764]  [<ffffffff81049a21>] tasklet_action+0x101/0x110
<4>[ 7290.415783]  [<ffffffff8104a3d0>] __do_softirq+0xc0/0x160
<4>[ 7290.415801]  [<ffffffff8100d01c>] call_softirq+0x1c/0x30
<4>[ 7290.415818]  [<ffffffff8100eff5>] do_softirq+0x75/0xb0
<4>[ 7290.415835]  [<ffffffff81049ee5>] irq_exit+0x95/0xa0
<4>[ 7290.415852]  [<ffffffff8100e547>] do_IRQ+0x77/0xf0
<4>[ 7290.415869]  [<ffffffff8100c7d3>] ret_from_intr+0x0/0xf
<4>[ 7290.415883]  <EOI>  [<ffffffff81234efa>] ? acpi_idle_enter_bm+0x270/0x2a5
<4>[ 7290.415911]  [<ffffffff81234f04>] ? acpi_idle_enter_bm+0x27a/0x2a5
<4>[ 7290.415931]  [<ffffffff81234efa>] ? acpi_idle_enter_bm+0x270/0x2a5
<4>[ 7290.415952]  [<ffffffff812c11f3>] ? cpuidle_idle_call+0x93/0xf0
<4>[ 7290.415971]  [<ffffffff8100b0d7>] ? cpu_idle+0xa7/0x110
<4>[ 7290.415989]  [<ffffffff8137b3d5>] ? rest_init+0x75/0x80
<4>[ 7290.416007]  [<ffffffff8158cd0a>] ? start_kernel+0x3a7/0x3b3
<4>[ 7290.416026]  [<ffffffff8158c315>] ? x86_64_start_reservations+0x125/0x129
<4>[ 7290.416047]  [<ffffffff8158c3fd>] ? x86_64_start_kernel+0xe4/0xeb

Reported-by: Maxim Levitsky <maximlevitsky@gmail.com>
Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:32:12 -05:00
Reinette Chatre
731a29b74a iwlwifi: initialize spinlock before use
Recent powersaving work resulted in power management ops being called
during EEPROM initialization. The lock used by these functions is not
initialized at this time. Ensure lock is initialized before it is used.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:32:10 -05:00
Reinette Chatre
bc45a67079 iwl3945: disable power save
we see from http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2125
that power saving does not work well on 3945. Since then power saving has
also been connected with association problems where an AP deathenticates a
3945 after it is unable to transmit data to it - this happens when 3945
enters power savings mode.

Disable power save support until issues are resolved.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:32:09 -05:00
Johannes Berg
b7bb1756cb iwlwifi: fix more eeprom endian bugs
I've also for a long time had a problem with the
temperature calculation code, which I had fixed
by byte-swapping the values, and now it turns out
that was the correct fix after all.

Also, any use of iwl_eeprom_query_addr() that is
for more than a u8 must be cast to little endian,
and some structs as well.

Fix all this. Again, no real impact on platforms
that already are little endian.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: stable@kernel.org
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:32:07 -05:00
Johannes Berg
af6b8ee388 iwlwifi: fix EEPROM/OTP reading endian annotations and a bug
The construct "le16_to_cpu((__force __le16)(r >> 16))" has
always bothered me when looking through the iwlwifi code,
it shouldn't be necessary to __force anything, and before
this code, "r" was obtained with an ioread32, which swaps
each of the two u16 values in it properly when swapping the
entire u32 value. I've had arguments about this code with
people before, but always conceded they were right because
removing it only made things not work at all on big endian
platforms.

However, analysing a failure of the OTP reading code, I now
finally figured out what is going on, and why my intuition
about that code being wrong was right all along.

It turns out that the 'priv->eeprom' u8 array really wants
to have the data in it in little endian. So the force code
above and all really converts *to* little endian, not from
it. Cf., for instance, the function iwl_eeprom_query16() --
it reads two u8 values and combines them into a u16, in a
little-endian way. And considering it more, it makes sense
to have the eeprom array as on the device, after all not
all values really are 16-bit values, the MAC address for
instance is not.

Now, what this really means is that all the annotations are
completely wrong. The eeprom reading code should fill the
priv->eeprom array as a __le16 array, with __le16 values.

This also means that iwl_read_otp_word() should really have
a __le16 pointer as the data argument, since it should be
filling that in a format suitable for priv->eeprom.

Propagating these changes throughout, iwl_find_otp_image()
is found to be, now obviously visible, defective -- it uses
the data returned by iwl_read_otp_word() directly as if it
was CPU endianness. Fixing that, which is this hunk of the
patch:

-               next_link_addr = link_value * sizeof(u16);
+               next_link_addr = le16_to_cpu(link_value) * sizeof(u16);

is the only real change of this patch. Everything else is
just fixing the sparse annotations.

Also, the bug only shows up on big endian platforms with a
1000 series card. 5000 and previous series do not use OTP,
and 6000 series has shadow RAM support which means we don't
ever use the defective code on any cards but 1000.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: stable@kernel.org
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:32:05 -05:00
Wey-Yi Guy
521d9bce86 iwlwifi: fix syslog message for event log dump size
When trigger event log dumping from debugfs, the entire event log
should be dumped and the size should match the number of events being
dump.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:31:59 -05:00
Reinette Chatre
f8701fe3ae iwlwifi: power up all devices for EEPROM read
Recent commits "iwlwifi: remove power-wasting calls to apm_ops.init()" and
"iwlagn: power up device before initializing EEPROM" had the goal of
reducing device power consumption from the time the module is loaded until
the interface is brought up and the device's power saving mechanisms kick
in. The idea is that once the module is loaded there is no need for the
device to consume power until the interface is brought up.

With the current solution the device is only powered up during EEPROM read,
and then so also only if the EEPROM type is OTP. We have found that on
certain platforms even non-OTP devices require power to be up during EEPROM
read. On these platforms the driver never loads and the system log contains
the following:

iwlagn 0000:03:00.0: MAC is in deep sleep!.  CSR_GP_CNTRL = 0x080403D8

We thus now power up all devices during EEPROM read.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:31:57 -05:00
Zhu Yi
64a76b504b iwlwifi: allocated rx page accounting cleanup
In iwlwifi, priv->alloc_rxb_page is used to keep track of the Rx
pages allocated by the driver. This cleans up the page free routines
by introducing __iwl_free_pages/iwl_free_pages so that the accounting
is more accurate and less error prone. This also fixes two instances where
the counter was not updated.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-21 11:31:55 -05:00
Stephen Rothwell
46e75f6667 net: fix for utsrelease.h moving to generated
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2009-12-12 13:12:04 +01:00
John W. Linville
9b1cb21c36 iwlwifi: fix warning from ieee80211_stop_tx_ba_cb_irqsafe argument change
CC [M]  drivers/net/wireless/iwlwifi/iwl-tx.o
drivers/net/wireless/iwlwifi/iwl-tx.c: In function ‘iwl_tx_agg_stop’:
drivers/net/wireless/iwlwifi/iwl-tx.c:1356: warning: passing argument 1 of ‘ieee80211_stop_tx_ba_cb_irqsafe’ from incompatible pointer type
include/net/mac80211.h:2128: note: expected ‘struct ieee80211_vif *’ but argument is of type ‘struct ieee80211_hw *’

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-07 16:40:05 -05:00
David S. Miller
8f56874bd7 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-12-04 13:25:15 -08:00
Reinette Chatre
250cce26d5 iwlwifi: driver version track kernel version
The driver version number is a remnant from when there was an out-of-tree
iwlwifi driver. Now that the driver forms part of kernel source we do not
need a separate driver version. Instead, we now use the kernel version as
driver version. We maintain the previous tags used to indicate which
components the driver has been compiled with.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:26 -05:00
Wey-Yi Guy
212fb57519 iwlwifi: indicate uCode type when fail dump error/event log
error_event_table_ptr is only set upon receipt of REPLY_ALIVE. Until
then both event log and error log will fail. Add information to indicate
which uCode encounter the failure case.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:26 -05:00
Wey-Yi Guy
bd3709b546 iwl3945: remove duplicated event logging code
In the process of improving uCode event logging capability, the new
implementation was introduced without removing the existing
implementation. The event log will be dumped to dmesg twice.
Remove the old implementation to only log the event once upon sys
assert or request by user.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-04 14:16:25 -05:00
David S. Miller
ff9c38bba3 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/mac80211/ht.c
2009-12-01 22:13:38 -08:00
Johannes Berg
827d42c9ac mac80211: fix spurious delBA handling
Lennert Buytenhek noticed that delBA handling in mac80211
was broken and has remotely triggerable problems, some of
which are due to some code shuffling I did that ended up
changing the order in which things were done -- this was

  commit d75636ef9c
  Author: Johannes Berg <johannes@sipsolutions.net>
  Date:   Tue Feb 10 21:25:53 2009 +0100

    mac80211: RX aggregation: clean up stop session

and other parts were already present in the original

  commit d92684e660
  Author: Ron Rindjunsky <ron.rindjunsky@intel.com>
  Date:   Mon Jan 28 14:07:22 2008 +0200

      mac80211: A-MPDU Tx add delBA from recipient support

The first problem is that I moved a BUG_ON before various
checks -- thereby making it possible to hit. As the comment
indicates, the BUG_ON can be removed since the ampdu_action
callback must already exist when the state is != IDLE.

The second problem isn't easily exploitable but there's a
race condition due to unconditionally setting the state to
OPERATIONAL when a delBA frame is received, even when no
aggregation session was ever initiated. All the drivers
accept stopping the session even then, but that opens a
race window where crashes could happen before the driver
accepts it. Right now, a WARN_ON may happen with non-HT
drivers, while the race opens only for HT drivers.

For this case, there are two things necessary to fix it:
 1) don't process spurious delBA frames, and be more careful
    about the session state; don't drop the lock

 2) HT drivers need to be prepared to handle a session stop
    even before the session was really started -- this is
    true for all drivers (that support aggregation) but
    iwlwifi which can be fixed easily. The other HT drivers
    (ath9k and ar9170) are behaving properly already.

Reported-by: Lennert Buytenhek <buytenh@marvell.com>
Cc: stable@kernel.org
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-30 13:55:51 -05:00
David S. Miller
4ba3eb034f Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-11-24 15:01:29 -08:00
Wey-Yi Guy
3681165235 iwlwifi: remove reset led_tpt from iwl_leds_init()
Current blinking rate is calculated based on the difference between
current tx/rx byte counts and priv->led_tpt.

priv->led_tpt should not get reset in iwl_leds_init(), this function can be
called by bring interface "up" or "down", or when uCode sysassert occurred.
resetting the led_tpt parameter will introduce incorrect led blinking behavior.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:38 -05:00
Wey-Yi Guy
2d237f71b0 iwlwifi: change message for cmd queue full error
Change error message for command queue full

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Acked-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:37 -05:00
Wey-Yi Guy
c341ddb283 iwlwifi: print limited number of event log when uCode error
To help iwlagn uCode debugging, event log will dump to syslog when driver
detect uCode error occurred, but this only happen when compile with
CONFIG_IWLWIFI_DEBUG and debug flag is enabled; which is not always
the case. Also, there is another problem, if the flag is set, the entire
event log buffer will be dump to syslog, it can flood the syslog and
make it very difficult to debug the problem.

Change the default to only dump last 20 entries of event log to syslog
unless the following condition meets:
1. both compile with CONFIG_IWLWIFI_DEBUG and debug flag
is enabled, and then dump the entire event buffer to syslog.
2. dump event log request from debugfs

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Acked-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:37 -05:00
Jay Sternberg
644c77f0cf iwlwifi: Tell the ucode immediately when association state changes
When we get a state change of associated or not, we need to tell the
ucode via the RX_ON command using the filter flags.  This will prevent
the ucode from sending any packets when not associated, specifically not
sending NULL QOS packets after a deauthentication which causes the AP to
repeatedly send deauth's in some situations.

Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:37 -05:00
Wey-Yi Guy
3a3ff72c18 iwlwifi: dump error log when uCode error occurred
uCode error log contain information as to what the error was and where
it occurred necessary to debug any uCode issues.

Always log the information without special debug flag, this can help to
capture the important information when error happened.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Acked-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:36 -05:00
Wey-Yi Guy
5ade1e4dd1 iwlwifi: by default, dump entire sram data portion
For "sram" debugfs file, if user did not specify the offset and length,
dump the entire data portion of sram by default.
Data portion is 0x800000 - 0x80ffff, but the actual data size is known
to the driver from the ucode file.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:35 -05:00
Wey-Yi Guy
ac592574a5 iwlwifi: update supported PCI_ID list for 5xx0 series
Update the PCI_ID list for 5xx0 series.
Remove all the PCI_IDs which never made into production or not longer in
production.

Also make sure the supported bands(a/b/g/n) match specified PCI_IDs

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:35 -05:00
Johannes Berg
0fd95afc7b iwlwifi: separate IO tracing
Since IO tracing is usually not needed and
generates a lot of data, separate it into
its own trace system so that we can always
enable iwlwifi:* and not have to worry about
getting too much data. If IO tracing is then
really needed we can enable iwlwifi_io:* in
addition and get that data.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:35 -05:00
Wey-Yi Guy
6262408392 iwlwifi: fix reserved2 field in iwl4965_addsta
reserved2 field in "struct iwl4965_addsta_cmd" is __le16.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:34 -05:00
Wey-Yi Guy
2943f136ff iwlwifi: dynamically allocate buffer for sram debugfs file
Dynamically allocate memory for dumping SRAM based on the length of memory
to be displayed.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:34 -05:00
Wey-Yi Guy
d23db55681 iwlwifi: increase tx_queue debugfs buffer size
For tx_queue, need to increase the buffer size allocated for it,
so all the queues information can be displayed

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:34 -05:00
Wey-Yi Guy
43e851157a iwlwifi: set read/write permission for debugfs files
Set the correct Read/Write file permission for iwlwifi debugfs files
based on the functionality of the files

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:33 -05:00
Reinette Chatre
bc6c94f609 iwl3945: removed unused struct and definitions
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:33 -05:00
Wey-Yi Guy
7163b8a4ec iwlwifi: reset led_tpt when clear tx/rx traffic byte counts
LED blink rate is based on the traffic load, when tx/rx traffic counts
got reset, we also need to reset the led_tpt to prevent incorrect
blink rate being calculated.

Merge both clear_tx_statistics() and clear_rx_statistics() into
single clear_traffic_statistics() function, when reset the traffic byte
counts, both tx and rx need to be reset at the same time, to make
sure calculated the correct led blink rate.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:32 -05:00
Wey-Yi Guy
c15d20c1d1 iwlwifi: set sm_ps_mode as part of cfg parameters
Setting "Spatial multiplexing Power Save" as part of
per device configuration parameter.

Report to uCode based on priv->conf setting, so driver can
have more control of how different devices should operate
in power save mode.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:32 -05:00
Wey-Yi Guy
d5f4cf71f7 iwlwifi: control led while update tx/rx bytes counts
LED blinking rate is based on tx/rx traffic, the most reasonable place
to do it is after update the traffic byte counts

This fixes the recent LED blinking breakage on 3945 introduced by "iwlwifi:
separate led function from statistic notification"

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:30 -05:00
Ben Cahill
74ba67edfc iwlagn: Use iwl_write8() for CSR_INT_COALESCING register
CSR_INT_COALESCING previously had only one, but now has two single-byte fields.
With only one single-byte field (lowest order byte) it was okay to write via
iwl_write32(), but now with two, an iwl_write32() to the lower order field
clobbers the other field (odd-address CSR_INT_PERIODIC_REG, offset 0x5), and an
iwl_write32() to CSR_INT_PERIODIC_REG could clobber the lowest byte of the
next-higher register (CSR_INT, offset 0x8).

Fortunately, no bad side effects have been produced by the iwl_write32()
usage, due to order of execution (low order byte was always written before
higher order byte), and the fact that writing "0" to the low byte of the
next higher register has no effect (only action is when writing "1"s).

Nonetheless, this cleans up the accesses so no bad side effects might occur
in the future, if execution order changes, or more bit fields get added to
CSR_INT_COALESCING.

Add some comments regarding periodic interrupt usage.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:30 -05:00
Ben Cahill
4e03185fb8 iwlwifi: Add iwl_write8()
To support byte writes to CSR_INT_COALESCING and CSR_INT_PERIODIC registers,
add iwl_write8(), including debug/trace support.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-23 17:05:30 -05:00
Johannes Berg
5be83de54c cfg80211: convert bools into flags
We've accumulated a number of options for wiphys
which make more sense as flags as we keep adding
more. Convert the existing ones.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-19 11:08:50 -05:00
David S. Miller
3505d1a9fd Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/sfc/sfe4001.c
	drivers/net/wireless/libertas/cmd.c
	drivers/staging/Kconfig
	drivers/staging/Makefile
	drivers/staging/rtl8187se/Kconfig
	drivers/staging/rtl8192e/Kconfig
2009-11-18 22:19:03 -08:00
Linus Torvalds
486bfe5c7c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits)
  cxgb3: fix premature page unmap
  ibm_newemac: Fix EMACx_TRTR[TRT] bit shifts
  vlan: Fix register_vlan_dev() error path
  gro: Fix illegal merging of trailer trash
  sungem: Fix Serdes detection.
  net: fix mdio section mismatch warning
  ppp: fix BUG on non-linear SKB (multilink receive)
  ixgbe: Fixing EEH handler to handle more than one error
  net: Fix the rollback test in dev_change_name()
  Revert "isdn: isdn_ppp: Use SKB list facilities instead of home-grown implementation."
  TI Davinci EMAC : Fix Console Hang when bringing the interface down
  smsc911x: Fix Console Hang when bringing the interface down.
  mISDN: fix error return in HFCmulti_init()
  forcedeth: mac address fix
  r6040: fix version printing
  Bluetooth: Fix regression with L2CAP configuration in Basic Mode
  Bluetooth: Select Basic Mode as default for SOCK_SEQPACKET
  Bluetooth: Set general bonding security for ACL by default
  r8169: Fix receive buffer length when MTU is between 1515 and 1536
  can: add the missing netlink get_xstats_size callback
  ...
2009-11-18 14:54:45 -08:00
Johannes Berg
c951ad3550 mac80211: convert aggregation to operate on vifs/stas
The entire aggregation code currently operates on the
hw pointer and station addresses, but that needs to
change to make stations purely per-vif; As one step
preparing for that make the aggregation code callable
with the station, or by the combination of virtual
interface and station address.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:15 -05:00
Ben Cahill
9e595d24b1 iwlwifi: Add comments about CSR registers
Also regroup CSR_EEPROM and CSR_OTP bit field definitions.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:08 -05:00
Johannes Berg
6ab10ff873 iwlwifi: handle unicast PS buffering
Using the new mac80211 functionality, this makes
iwlwifi handle unicast PS buffering correctly.
The device works like this:

 * when a station goes to sleep, the microcode notices
   this and marks the station as asleep
 * when the station is marked asleep, the microcode
   refuses to transmit to the station and rejects all
   frames queued to it with the failure status code
   TX_STATUS_FAIL_DEST_PS (a previous patch handled
   this correctly)
 * when we need to send frames to the station _although_
   it is asleep, we need to tell the ucode how many,
   and this is asynchronous with sending so we cannot
   just send the frames, we need to wait for all other
   frames to be flushed, and then update the counter
   before sending out the poll response frames. This
   is handled partially in the driver and partially in
   mac80211.

In order to do all this correctly, we need to
 * keep track of how many frames are pending for each
   associated client station (avoid doing it for other
   stations to avoid the atomic ops)
 * tell mac80211 that we driver-block the PS status
   while there are still frames pending on the queues,
   and once they are all rejected (due to the dest sta
   being in PS) unblock mac80211

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:08 -05:00
Johannes Berg
9bb487b406 iwlwifi: add sleep_tx_count ucode station API
This field was marked as reserved before since we didn't
use it, but is present in all released firmwares afaict.
We're going to need it soon, so add it now.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:07 -05:00
Johannes Berg
c397bf15a6 iwlwifi: report PS filtered status
When a frame is sent to a sleeping station, the
microcode reports TX_STATUS_FAIL_DEST_PS as its
status -- we need to translate that to the flag
that mac80211 expects.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:07 -05:00
Daniel C Halperin
f513dfff96 iwlwifi: make iwlwifi send beacons
Handle BSS_CHANGED_BEACON_ENABLED to enable the sending
of beacons. Also set the correct HT RXON and QoS config.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:06 -05:00
Daniel C Halperin
47ff65c487 iwlwifi: fix bugs in beacon configuration
When sending beacon commands to the uCode, we must
inform it of the offset in the beacon frame of the
TIM Element so it can transmit packets from the
correct queue. This functionality is implemented
in iwl_set_beacon_tim().

Fix a bug setting the rate_n_flags for the beacon
packet. First, it should not use the station table's
rate (it's a management frame), and second it needs
to properly configure the TX antennas.

Finally, also, clean up and comment relevant functions.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:06 -05:00
Reinette Chatre
e43ab94d2e iwlagn: power up device before initializing EEPROM
A recent change optimized the power usage by the device by only powering it
up during EEPROM load if it is required (for OTP devices). This change causes
an error on the 1000 series devices during module load.

The error looks as follows:
[ 1624.024524] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27kds
[ 1624.024527] iwlagn: Copyright(c) 2003-2009 Intel Corporation
[ 1624.024711] iwlagn 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 1624.024749] iwlagn 0000:01:00.0: setting latency timer to 64
[ 1624.024909] iwlagn 0000:01:00.0: Detected Intel Wireless WiFi Link 1000 Series BGN REV=0x6C
[ 1624.081263] iwlagn 0000:01:00.0: MAC is in deep sleep!.  CSR_GP_CNTRL = 0x080003D8
[ 1624.092967] iwlagn 0000:01:00.0: OTP is empty
[ 1624.092988] iwlagn 0000:01:00.0: Unable to init EEPROM
[ 1624.093033] iwlagn 0000:01:00.0: PCI INT A disabled
[ 1624.093065] iwlagn: probe of 0000:01:00.0 failed with error -2

Adding a dump_stack() to where that error is printed shows the following:

[ 1624.024524] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27kds
[ 1624.024527] iwlagn: Copyright(c) 2003-2009 Intel Corporation
[ 1624.024711] iwlagn 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 1624.024749] iwlagn 0000:01:00.0: setting latency timer to 64
[ 1624.024909] iwlagn 0000:01:00.0: Detected Intel Wireless WiFi Link 1000 Series BGN REV=0x6C
[ 1624.081263] iwlagn 0000:01:00.0: MAC is in deep sleep!.  CSR_GP_CNTRL = 0x080003D8
[ 1624.081263] Pid: 3073, comm: work_for_cpu Tainted: G        W 2.6.31.5 #4
[ 1624.081263] Call Trace:
[ 1624.081263]  [<ffffffffa02395db>] T.726+0x22b/0x420 [iwlcore]
[ 1624.081263]  [<ffffffffa023985a>] iwlcore_eeprom_acquire_semaphore+0x8a/0x190 [iwlcore]
[ 1624.081263]  [<ffffffff81110c94>] ? __kmalloc+0x194/0x1c0
[ 1624.081263]  [<ffffffffa02391f5>] ?  iwlcore_eeprom_verify_signature+0x25/0xf0 [iwlcore]
[ 1624.081263]  [<ffffffffa0239c67>] iwl_eeprom_init+0x107/0xf40 [iwlcore]
[ 1624.081263]  [<ffffffffa026ab9c>] ?  iwl_prepare_card_hw+0x11c/0x470 [iwlagn]
[ 1624.081263]  [<ffffffff8127e2a4>] ?  pci_bus_write_config_byte+0x64/0x80
[ 1624.081263]  [<ffffffffa026b1f8>] iwl_pci_probe+0x308/0xac0 [iwlagn]
[ 1624.081263]  [<ffffffff810710a0>] ? do_work_for_cpu+0x0/0x30
[ 1624.081263]  [<ffffffff81284912>] local_pci_probe+0x12/0x20
[ 1624.081263]  [<ffffffff810710b3>] do_work_for_cpu+0x13/0x30
[ 1624.081263]  [<ffffffff81075826>] kthread+0xa6/0xb0
[ 1624.081263]  [<ffffffff81012fea>] child_rip+0xa/0x20
[ 1624.081263]  [<ffffffff81075780>] ? kthread+0x0/0xb0
[ 1624.081263]  [<ffffffff81012fe0>] ? child_rip+0x0/0x20
[ 1624.092967] iwlagn 0000:01:00.0: OTP is empty
[ 1624.092988] iwlagn 0000:01:00.0: Unable to init EEPROM
[ 1624.093033] iwlagn 0000:01:00.0: PCI INT A disabled
[ 1624.093065] iwlagn: probe of 0000:01:00.0 failed with error -2

We know that the routines in this trace, iwlcore_eeprom_acquire_semaphore
and iwlcore_eeprom_verify_signature, only access CSR registers and thus do
not need the device to be awake if it is EEPROM. But for OTP it is required
for the device to be awake to read these registers. Ensure device is awake
before accessing these registers.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Acked-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:06 -05:00
Wey-Yi Guy
98a7b43be1 iwlwifi: align tx/rx statistics debugfs format
Align the format for tx_statistics and rx_statistics debugfs output for
better readability

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:05 -05:00
Wey-Yi Guy
ae16fc3c31 iwlwifi: eliminate the possible 1/2 dBm tx power loss in 6x00 & 6x50 series
In both 6x00 and 6x50 series, the enhanced/extended tx power table in
EEPROM is used to set the max. tx power limit.
This new tx power table is in 1/2 dBm format, which creates an issue of
possibility of 1/2 dBm loss when driver set the tx power limit; because
of driver keep track and report the tx power in dBm format.

In order to prevent the 1/2 dBm loss, keep track of the true max tx
power in 1/2 dBm format in driver; do the comparison and adjust the tx
power if needed when send tx power command to uCode.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:05 -05:00
Ben Cahill
4d6ccbf57f iwl3945: Reset saved POWER_TABLE_CMD in "up"
Power-saving logic will not re-issue a POWER_TABLE_CMD if a new command
matches the prior one.  This can be bad if we re-start the device due to
e.g. uCode error; the new POWER_TABLE_CMD (required to invoke power-saving)
may match the prior POWER_TABLE_CMD issued before the uCode error.

Ensure the POWER_TABLE_CMD is sent to device when uCode is up.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:05 -05:00
Wey-Yi Guy
ef8d5529b0 iwlwifi: update reply_statistics_cmd with 'clear' parameter
When issue REPLY_STATISTICS_CMD to uCode, two possible flag
can be set in the configuration flags

bit 0: Clear statistics
       0: Do not clear Statistics counters
       1: Clear to zero Statistics counters

Allow "clear" parameter to be set from the caller.

Add debugfs file to clear the statistics counters to help monitor and
debug the uCode behavior.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:04 -05:00
Wey-Yi Guy
7d2ed110a8 iwlwifi: remove external reference for non-exist data structure
Number of data structure for 6000 series no longer in production, the
data structure already being removed; also need to remove the external
reference define in iwl-dev.h

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:04 -05:00
Wey-Yi Guy
a8a9a159bf iwlwifi: drop non-production PCI-IDs for 6x50 series
drop the non-production PCI-IDs for 6x50 series

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:03 -05:00
Wey-Yi Guy
d7d144012a iwlwifi: remove unused parameter from iwl_channel_info
Number of HT40 power parameters are not used; remove those from
iwl_channel_info data structure

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:03 -05:00
Wey-Yi Guy
85bb174a38 iwlwifi: disable coex until implementation ready for 6x50
Temporary disable the coex function for wifi/wimax for 6x50
series until the full implementation ready.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:02 -05:00
Wey-Yi Guy
85f0d9e877 iwlwifi: validate enhanced tx power entry
Validate enhanced tx power entry read from EEPROM before applying the
tx power value. Different versions of EEPROM might contain different size
of table; always a good idea to make sure the entry is valid before
applying to the targeted channel.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18 17:09:02 -05:00
David S. Miller
dfef948ed2 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-11-18 10:55:32 -08:00
Julia Lawall
d20a80f0e6 drivers/net/wireless/iwlwifi: remove exceptional & on function name
In this file, function names are otherwise used as pointers without &.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier f;
@@

f(...) { ... }

@@
identifier r.f;
@@

- &f
+ f
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18 10:48:54 -08:00
John W. Linville
ddd21046e7 iwlwifi: fix iwl1000 "RTS/CTS for HT" merge damage
I may have botched my merge conflict resolution instructions for Dave...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-11 13:04:42 -08:00
Ben Cahill
309e731a61 iwlwifi: MAC_ACCESS_REQ cleanup
Add txq_id info to "Tx queue requesting wakeup" debug message

Add "Rx queue requesting wakeup" debug message

Move clear of CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ to be after nearby
iwl_write_prph(), since iwl_write_prph() sets it and clears it.  Almost
removed it entirely, but just making sure in case someone removes the
iwl_write_prph()!  Also remove unneeded priv->lock usage; this is now
handled by priv->reg_lock within iwl_clear_bit().

Join a couple of lines that had unneeded line returns.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:48 -05:00
Wey-Yi Guy
f060face81 iwlwifi: Fix issue on file transfer stalled in HT mode
Turn on RTS/CTS for HT to prevent uCode TX fifo underrun

This is fix for
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2103

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Tested-by: Jiajia Zheng <jiajia.zheng@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:48 -05:00
Ben Cahill
8756990f99 iwlagn: update write pointers in iwl_irq_tasklet()
Follow-up to "update write pointers for all tx queues after wakeup"; that
patch changed iwl_irq_tasklet_legacy(), but not iwl_irq_tasklet(), so
newer devices were not covered.

Comments from original patch:

Wakeup interrupt has been updating write pointers (indexes, actually) only
for tx queues 0-5.  This is adequate just for 3945, but inadequate for other
devices, all of which have more tx queues.  Now updating all tx/command queues,
so device can be aware of all new tx and host commands enqueued while
device was asleep.

This can potentially improve data traffic bandwidth and/or latency.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:47 -05:00
Ben Cahill
a7e6611034 iwlwifi: Add comments about MAC_ACCESS_REQ
Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:47 -05:00
Ben Cahill
2a3b793d6a iwlwifi: Update comments for struct iwl_ssid_ie
Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:47 -05:00
Ben Cahill
e585447189 iwlwifi: speed up event log dumps
Take advantage of device's auto-increment for SRAM reads to eliminate extra
write address accesses.

Grab/release NIC access before/after entire read sequence, rather than for
each read individually.

After a quick check of dmesg logs, this seems to double Event Log dump speed,
reducing from about 20 milliseconds to about 10 milliseconds for 512 entries
using 3945.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:46 -05:00
Ben Cahill
84c4069232 iwlwifi: Limit size of Event Log dump
If device provides bad values for Event Log parameters (due to being asleep
or SRAM corruption, etc.), the size can be very, very large (e.g. 0xa5a5a5a5),
which can flood system log.

Sanity-check capacity and next_entry values and limit to reasonable size dump.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:45 -05:00
Wey-Yi Guy
6762f07fd5 iwlwifi: do not base station's sm_ps setting on AP
Do not use AP's SM_PS setting for our own SM_PS setting.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:45 -05:00
Wey-Yi Guy
740e7f51c2 iwlwifi: drop non-production PCI-IDs
Remove the support for all the PCI_IDs never make into production

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:45 -05:00
Wey-Yi Guy
0924e519a3 iwlwifi: fix for channel switch
Different channel has different configuration, need to pass correct
configuration to uCode when send "channel switch" command to uCode.
Invalid configuration will cause sysassert in uCode and produce
un-expected result.

Even it is a very small windows, but we also need to consider and handle
the case if commit_rxon occurred before the "channel switch
announcement" notification received from uCode.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:44 -05:00
Johannes Berg
681988653e iwlwifi: add FIFO usage for 5000
This is part of the code, but the comment doesn't have it,
add pointers to the code and the FIFO usage for 5000 and
up.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:43 -05:00
Wey-Yi Guy
bed0a68f98 iwlwifi: remove un-used parameter
Remove un-used parameter "recovery_rxon" from "priv" data structure

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:43 -05:00
Johannes Berg
1a716557a5 iwlwifi: fix FIFO vs. queue confusion
When I added that code setting the swq_id, I evidently
did not understand the distinction between FIFO and TX
queue yet and added code to compare a queue ID and a
FIFO number, which is bogus.

However, the code there need not be this specific, it
can just set all queues to the identity mapping which
will be overwritten by the aggregation queue code. As
a bit of defensive coding, don't assign an swq_id to
the command queue so that if we ever use it for frames
we notice quickly.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:43 -05:00
Johannes Berg
a221e6f7b4 iwlwifi: don't double-activate queue 4
The fourth queue (command queue) is already activated in
the loop above that also maps it to the command FIFO and
therefore doesn't need to be marked as activated again.
Also change the TODO comment to be accurate -- we need
to initialise the _queues_, not FIFOs, and map them to
device FIFOs.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:42 -05:00
Wey-Yi Guy
0748dc1fcd iwlwifi: no periodic Tx/IQ calibration for 6x00/6x50 series
For both 6x00 and 6x50 series devices, periodic Tx IQ calibration is
disabled in uCode, driver do not need to set the periodic Tx/IQ calibration
bit in calibration command.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:42 -05:00
Shanyu Zhao
b23aa88367 iwlwifi: use configured valid rx chain for scan
Use configured valid rx chains in scan command instead of ANT_ABC, correcting
valid rx chain configuration of 4965, should be ANT_ABC instead of ANT_AB.

Signed-off-by: Shanyu Zhao <shanyu.zhao@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:42 -05:00
Shanyu Zhao
f1e3d7d428 iwlwifi: use only one chain for scan in PS
When doing scan in power saving mode, choose only 1 valid RX chain instead of
turning all chains on.

Signed-off-by: Shanyu Zhao <shanyu.zhao@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:41 -05:00
Wey-Yi Guy
a643565efc iwlwifi: print rx_on config to help debug
To help debug rx related issues, if IWL_DEBUG_RADIO flag is set, print
the rxon configuration when rxon host command send to uCode.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:41 -05:00
Zhu Yi
a3b6bd5bf2 iwlwifi: allocate 128 bytes linear buffer for rx skb
Allocate 128 bytes linear buffer for rx skb. The first 64 bytes is
reserved for mac80211 usage (for radiotap header expansion, etc).
The frame header starts from the second 64 bytes.

Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:41 -05:00
Reinette Chatre
cf7ff8dfe6 iwlwifi: change debug message to error in failure case
Since these messages indicate failure we would be interested in seeing them
always.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11 15:23:40 -05:00
Wey-Yi Guy
d01032e4fd iwlwifi: Fix issue on file transfer stalled in HT mode
Turn on RTS/CTS for HT to prevent uCode TX fifo underrun

This is fix for
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2103

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Tested-by: Jiajia Zheng <jiajia.zheng@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-10 16:24:16 -05:00
Wey-Yi Guy
73871f7181 iwlwifi: Use RTS/CTS as the preferred protection mechanism for 6000 series
When 802.11g was introduced, we had RTS/CTS and CTS-to-Self protection
mechanisms. In an HT Beacon, HT stations use the "Operating Mode" field
in the HT Information Element to determine whether or not to use
protection.

The Operating Mode field has 4 possible settings: 0-3:
Mode 0: If all stations in the BSS are 20/40 MHz HT capable, or if the
BSS is 20/40 MHz capable, or if all stations in the BSS are 20 MHz HT
stations in a 20 MHz BSS
Mode 1: used if there are non-HT stations or APs using the primary or
secondary channels
Mode 2: if only HT stations are associated in the BSS and at least one
20 MHz HT station is associated.
Mode 3: used if one or more non-HT stations are associated in the BSS.

When in operating modes 1 or 3, and the Use_Protection field is 1 in the
Beacon's ERP IE, all HT transmissions must be protected using RTS/CTS or
CTS-to-Self.

By default, CTS-to-self is the preferred protection mechanism for less
overhead and higher throughput; but using the full RTS/CTS will better
protect the inner exchange from interference, especially in
highly-congested environment.

For 6000 series WIFI NIC, RTS/CTS protection mechanism is the
recommended choice for HT traffic based on the HW design.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-10 16:23:58 -05:00
Johannes Berg
5ed176e1c4 mac80211: make ieee80211_find_sta per virtual interface
Since we have a TODO item to make all station
management dependent on virtual interfaces, I
figured I'd start with pushing such a change
to drivers before more drivers start using the
ieee80211_find_sta() API with a hw pointer and
cause us grief later on.

For now continue exporting the old API in form
of ieee80211_find_sta_by_hw(), but discourage
its use strongly.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-04 18:44:48 -05:00
Wey-Yi Guy
1933ac4d93 iwlwifi: add wimax/wifi coexist support for 6x50 series
For 6x50 series, it is wimax/wifi combo device, so driver need to enable
the wimax/wifi co-exist function and send the coexist event priority
table to uCode for operation.

The priority table will be used by uCode to determine what is the proper
action it should take when co-exist with WiMAX.
For example, when WiFi runs a scan, it must own radio exclusively, therefore
will disconnect WiMAX if WiMAX is connected.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:48 -05:00
Wey-Yi Guy
3f3e0376bb iwlwifi: add SM PS support for 6x50 series
Spatial Multiplexing Power Save was disabled to achieve better
throughput while in power save mode by activating all the rx chains all the time.
By doing so, the device power consumption is high.

Enable static/dynamic spatial multiplexing power save if device support
it, which can lower the power consumption without impact throughput.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:48 -05:00
Wey-Yi Guy
fe1bcbfda7 iwlwifi: coex API data structure
Add data structure define for COEX_MEDIUM_NOTIFICATION and
COEX_EVENT_CMD host commands.

COEX_MEDIUM_NOTIFICATION is notification from uCode to host to indicate
medium changes. COEX_EVENT_CMD is from host to uCode for coex event
request.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:48 -05:00
Reinette Chatre
f2f21b4928 iwlwifi: print warning when sending host command fails
More information than the "-EIO" return code will be useful here.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:47 -05:00
Reinette Chatre
5ad13f8ce7 iwlagn: move rate scale initialization to init function
This fits better in how the callbacks operate (alloc does allocation and
init does initialization). This also helps if we later want to do our own
initialization without relying on the mac80211 allocation.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:47 -05:00
Reinette Chatre
62a9492618 iwl3945: store station rate scale information in mac80211 station structure
Currently the rate scale information is pointed to from the mac80211
station structure but since that is the only member we might as well make
it part of the structure. Also move the rate scaling initialization to the
init function, no need to do it when we allocate the structure. This fits
with how mac80211 deals with rate scaling information (it always calls init
after allocation) and makes it easier for us to later call initialization
directly.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:47 -05:00
Reinette Chatre
9a9ca65fbf iwlwifi: split adding broadcast station from others
In preparation for some station management changes we split the addition of
a broadcast station from the other stations. Later we will rely on mac80211
to direct all management (addition/removal) of all stations except the
broadcast station.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:46 -05:00
Reinette Chatre
89f186a8b6 iwlwifi: move iwl_[un]init_drv to iwlagn
Since iwlagn is the only user of these functions, move it to this module.
This results in a bit more code moving than just these functions since the
functions only used by them are also moved and we need to export the
symbols previously available to them directly.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:46 -05:00
Reinette Chatre
c33de6256a iwlwifi: unmap memory before use
Handling responses to driver originated commands include passing the
original command buffer to the caller. At this time it is possible for a
callback to be invoked that is passed this command buffer and thus likely
to access it.

We need to make sure that the memory associated with that buffer is not DMA
mapped at the time.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:46 -05:00
Ben Cahill
c2e61da29d iwlagn: update write pointers for all tx queues after wakeup
Wakeup interrupt has been updating write pointers (indexes, actually) only
for tx queues 0-5.  This is adequate just for 3945, but inadequate for other
devices, all of which have more tx queues.  Now updating all tx/command queues,
so device can be aware of all new tx and host commands enqueued while
device was asleep.

This can potentially improve data traffic bandwidth and/or latency.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:45 -05:00
Ben Cahill
c72cd19fab iwlagn: Clarify FH_TX interrupt
Add/clarify comments and debug messages for interrupt used only for uCode load

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:45 -05:00
Ben Cahill
a6c5c731c3 iwlagn: invoke L0S workaround for 6000/1000 series
Invoke workaround to avoid instability in L0->L0S->L1 transition on PCIe bus.
Workaround disables L0S state so device moves directly from L0->L1.
Workaround needed on all devices since and including 4965; add to 6000/1000.

Describe bug and workaround better in comments.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:45 -05:00
Ben Cahill
88521364cc iwlwifi: remove power-wasting calls to apm_ops.init()
To save power, don't run apm_ops.init() until needed at "up" time.

EEPROM (5000 and earlier devices) may be read without running apm_ops.init(),
but OTP reads (6000 and newer devices) require a powered-up chip.
Therefore, remove apm_ops.init() from the general path in XXXX_pci_probe(),
and call it only if device uses OTP.  Once done with OTP read, call
apm_ops.stop() to reset chip and save power until "up" time comes around.

NOTE:  This patch depends on removal of priv->lock from iwl_apm_stop();
lock does not get initialized until later in flow.  See patch
"remove unneeded locks from apm_stop()".

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:44 -05:00
Ben Cahill
5220af0c3b iwlwifi: remove unneeded locks from apm_stop() and stop_master()
Since priv->reg_lock was added to keep multi-access register manipulation
atomic, priv->lock protection is no longer needed.  Remove this from
iwl_apm_stop_master() and iwl_apm_stop().

Add warning of timeout when polling for busmaster disablement confirmation,
and some comments.

NOTE:  This is needed to enable use of apm_ops.stop() within iwl_eeprom_init();
priv->lock does not get initialized until after this flow.  See patch
"remove power-wasting calls to apm_ops.init()"

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:44 -05:00
Reinette Chatre
5ebeb5a676 iwlwifi: provide firmware version
By setting the firmware version in wiphy it is possible to obtain this
information via ethtool. Some examples,

	    # ethtool -i wlan1
	    driver: iwlagn
	    version: 2.6.32-rc5-wl-56840-g26d8540
	    firmware-version: 228.57.2.23
	    bus-info: 0000:03:00.0
	    # ethtool -i wlan0
	    driver: iwl3945
	    version: 2.6.32-rc5-wl-56840-g26d8540
	    firmware-version: 15.28.2.8
	    bus-info: 0000:02:00.0

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-02 15:39:43 -05:00
John W. Linville
133d7c6a50 wireless: remove WLAN_80211 and WLAN_PRE80211 from Kconfig
With the WLAN_PRE80211 drivers moved to drivers/staging, this
distinction becomes unnecessary.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-30 16:50:35 -04:00
Wey-Yi Guy
d23000cd89 iwlwifi: minor comments changes for wimax co-exist command
'COEX_PRIORITY_TABLE_CMD' host command will be supported for 5000 series
and up.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:04 -04:00
Ben Cahill
c166b25a5c iwlwifi: make sure device is reset when unloading driver
Add unconditional call to apm_ops.stop() to reset device to low power state
when unloading driver.  Some paths have existed to unload driver *without*
resetting device, therefore some errors have persisted through multiple
load/unload cycles, until the whole platform gets rebooted; this is an
attempt to remedy some of those situations.  Sorry, I can't seem to find
a bughost.org bug that specifically has these symptoms, but I had it happen
recently here.

Note that this will *not* fix situations in which the PCI express bus has
crashed (evidenced by register reads showing "0xffffffff"), e.g. bughost.org
1855 and 2096; device is unreachable from driver in those cases.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:03 -04:00
Wey-Yi Guy
442464218d iwlwifi: update lowest API version support for 6x00 & 6x50 series
For 6x00 and 6x50 series devices, APIv4 is the lowest firmware version
driver can support. This is also the lowest API version available to the
public so there is no need for backward compatibility support for the
earlier API versions.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:03 -04:00
Wey-Yi Guy
570af86e0a iwlwifi: remove duplicated define
Duplicated define for listen interval (IWL_CONN_MAX_LISTEN_INTERVAL and
IWL_CONN_LISTEN_INTERVAL), remove IWL_CONN_LISTEN_INTERVAL

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Reported-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:03 -04:00
Zhu Yi
7300515d10 iwlwifi: reuse page for notification packets
For notification packets and SKBs that fail to rx correctly, add
them back into the rx_free list so that the pages can be reused
later. This avoids allocating new rx pages unnecessarily.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:03 -04:00
Wey-Yi Guy
71c55d90f9 iwlwifi: remove unused parameters
parameters "len" is not used in both iwl_tx_queue_free() and
iwl_cmd_queue_free() functions

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:02 -04:00
Reinette Chatre
6c5cd9d524 iwlwifi: remove duplicate defines
RX_FREE_BUFFERS and RX_LOW_WATERMARK are currently defined in four places.
Based on how files are included we only need the definition in iwl-fh.h

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reported-by: Frans Pop <elendil@planet.nl>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:02 -04:00
Wey-Yi Guy
4a56e9652e iwlwifi: add channel switch support to 5000 series and up
Support "channel switch" request by issue "channel switch" host command
to uCode.

There is no separated "channel switch" indication from mac80211,
when detected "IEEE80211_CONF_CHANGE_CHANNEL" flag in iwl_mac_config(),
if the station is in "associated" state, then assume "channel switch
announcement" IE was received by mac80211.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:02 -04:00
Wey-Yi Guy
480e8407dc iwlwifi: issue ct_kill host command based on device config
Using device configuration structure to decide how to configure
ct_kill host command.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:01 -04:00
Wey-Yi Guy
6047b4f939 iwlwifi: choose thermal throttle method based on device config
Using device configuration structure to decide the type of thermal
throttle method for the device.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:01 -04:00
Wey-Yi Guy
c8c24872c6 iwlwifi: increase max tfd payload size
Increase the size of TFD_MAX_PAYLOAD_SIZE (the size of iwl_device_cmd)
to accommodate iwl6000_channel_switch_cmd data structure.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Acked-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:01 -04:00
Zhu Yi
29b1b2688f iwlwifi: fix use after free bug for paged rx
In the paged rx patch (4854fde2), I introduced a bug that could possibly
touch an already freed page. It is fixed by avoiding the access in this
patch. I've also added some comments so that other people touching the
code won't make the same mistake. In the future, if we cannot avoid
access the page after being handled to the upper layer, we can use
get_page/put_page to handle it. For now, it's just not necessary.

It also fixed a debug message print bug reported by Stanislaw Gruszka
<sgruszka@redhat.com>.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:01 -04:00
Wey-Yi Guy
52aa081c40 iwlwifi: specify the valid tx/rx chain in device config structure
Specify both Tx and Rx chain in device configuration structure instead
of hard code in set_hw_params() for 4965

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:50:00 -04:00
Wey-Yi Guy
456d0f7672 iwlwifi: update bt co-exit configuration parameter
Adding parameter ranges for bt co-exist configuration command.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:49:59 -04:00
Wey-Yi Guy
1ed2a3d29a iwlwifi: separate led function from statistic notification
Detach led background task from statistic notification routine. if led
blinking is required; the blink rate is based on the traffic condition.
It do not relate to statistics notification. In addition to that, there is
not a requirement for statistics notification has to occur all the time.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:49:59 -04:00
Ben Cahill
fadb3582a3 iwlwifi: consolidate apm_init() functions
Consolidate most iwlXXXX_apm_init() functions into single iwl_apm_init().
Keep iwl3945_apm_init(), but leverage iwl_apm_init() for most functionality.
Update 4965 init sequence to follow most recent factory recommendations.

Add following members to struct iwl_cfg to guide the init sequence:
pll_cfg_val (replaces needs_pll_cfg), set_l0s, use_bsm

Move L0S enable/disable from nic_config() functions to iwl_apm_init().
This satisifies the "FIXME: put here L1A -L0S w/a" notice, and complies
with factory-recommended sequence.

Add debug info message in iwl_apm_init(), and symmetrical message
in iwl_apm_stop().

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:49:59 -04:00
Wey-Yi Guy
065e63b00c iwlwifi: fix gain computation for 5000 series and up
In Rx gain balancing (chain noise) computation for 5000 series and up,
the delta gain calculation should use the average noise of default
chain, not "chain 0" which do not exist for all the devices.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:49:58 -04:00
Jay Sternberg
1a5c3d6199 iwlwifi: add missing commands to syslog messages
Two commands missing from list of commands such that when debug is
enabled, these commands are shown as UNKNOWN.

Missing commands are TX_ANT_CONFIGURATION_CMD and
TEMPERATURE_NOTIFICATION.

Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:49:58 -04:00
Wey-Yi Guy
4ad177b5c8 iwlwifi: rework for static power save
For static power save, the actual intervals are calculated by driver based on
the default table and DTIM flag, then sent to uCode when the scheme
is changed.

Three tables are defined based on DTIM period.
	1. DTIM 0 - 2
	2. DTIM 3 - 10
	3. DTIM > 11

The actual number of DTIM a station may miss may not exceed the
following:
	. Only 1 DTIM may be skipped at PI=4 when allowed
	. Only 2 DTIMs may be skipped at PI=5 when allowed
	. DTIM may be skipped only 5 sec after last activity
	. DTIM may be skipped only 30 sec after connection establishment

Only allow user to override the power_level when rf is ready to make sure
power level gets changed upon request.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:34 -04:00
Wey-Yi Guy
9444b18802 iwlwifi: no chain noise support for 6x50 series
For initial bring up of 6x50 series NICs, no chain noise support in
uCode, this feature will be added in the later stage of development.

Two chain noise related functions are removed from 6x50 series:
1. gain computation
2. chain noise reset

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:33 -04:00
Wey-Yi Guy
32004ee42f iwlwifi: set auto clock gate disable bit for 6x00/6x50 series
For 6x00 and 6x50 series NIC with OTP shadow RAM, set auto clock gate
disable bit when initializing OTP access.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:33 -04:00
Reinette Chatre
8d9698b3e6 iwlagn: store station rate scale information in mac80211 station structure
Currently mac80211 initializes the rate scaling before notifying the driver
of the station's existence. The driver dealt with this by not relying on
mac80211's station notifications and instead mixing this functionality with
the rate scaling code and other places. To clean this up the driver needs
to do rate scaling initialization after being notified of the station, this
can be done if the rate scaling information forms part of the station
information passed from mac80211 to driver.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:33 -04:00
Reinette Chatre
cc1282f63b iwlwifi: move rate scaling structures to header file
Move to header file so they can be included and used in other parts of the
driver.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:32 -04:00
Reinette Chatre
f0b6e2e8cb iwlwifi: move iwl_setup_mac to iwlagn
This function is only used in iwlagn so there is no need to have it in
iwlcore.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:32 -04:00
Wey-Yi Guy
3ab312a893 iwlwifi: fix incorrect otp blocks number for 6x50 series
For 6x50 series, number of OTP blocks is different from 6x00 series

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:31 -04:00
Wey-Yi Guy
32b7e244f2 iwlwifi: identify eeprom version for 6x50 series NIC
Adding support for 6x50 series EEPROM version check, 6x50 is wifi/wimax
combo device which has different EEPROM map

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:31 -04:00
Wey-Yi Guy
c09430abed iwlwifi: show current power save status reported by uCode
Power save request is sent from driver to uCode, but there is no
indication from uCode about the current device power save state.

Reading GP_CNTRL register bit 25:24 to show the current power save
status

00: no power save
01: MAC power down
10: PHY power down
11: Error

The uCode could switch in and out of power save mode in the order of
once per 100-300 ms in many cases. The reading here should just be used for
reference on the current uCode power save status. Do not confuse this
reading with the PowerSave set by driver and mac80211.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:31 -04:00
Abhijeet Kolekar
1f80989e8b iwl3945: disable all tx fifos
Disable the all the tx fifos while stopping the tx queues.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:30 -04:00
Zhu Yi
2f301227a1 iwlwifi: use paged Rx
This switches the iwlwifi driver to use paged skb from linear skb for Rx
buffer. So that it relieves some Rx buffer allocation pressure for the
memory subsystem. Currently iwlwifi (4K for 3945) requests 8K bytes for
Rx buffer. Due to the trailing skb_shared_info in the skb->data,
alloc_skb() will do the next order allocation, which is 16K bytes. This
is suboptimal and more likely to fail when the system is under memory
usage pressure. Switching to paged Rx skb lets us allocate the RXB
directly by alloc_pages(), so that only order 1 allocation is required.

It also adjusts the area spin_lock (with IRQ disabled) protected in the
tasklet because tasklet guarentees to run only on one CPU and the new
unprotected code can be preempted by the IRQ handler. This saves us from
spawning another workqueue to make skb_linearize/__pskb_pull_tail happy
(which cannot be called in hard irq context).

Finally, mac80211 doesn't support paged Rx yet. So we linearize the skb
for all the management frames and software decryption or defragmentation
required data frames before handed to mac80211. For all the other frames,
we __pskb_pull_tail 64 bytes in the linear area of the skb for mac80211
to handle them properly.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:06 -04:00
Wey-Yi Guy
e57f14895b iwlwifi: update channel switch command API
Channel switch host command has different data structure for
different devices. Adding additional structures to support 5000 and 6000
NICs. unlike 4965, starting with 5000 series, the tx power is managed by
uCode, there is no tx power db information need to be passing from driver to
uCode; but the space needs to be reserved to match uCode expection.

1000 NIC do not support channel switch operation since it is 'bgn'
device, there is no need to have data structure defined for it.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:01 -04:00
Abhijeet Kolekar
768db9829d iwl3945: rearrange the code.
Rearrange the code and groups setting of
retry_limit and data_retry_limits code together.
Make 'data_retry_limit' setting similar to iwlwifi
for better readability.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:01 -04:00
Abhijeet Kolekar
1f0436f470 iwlwifi/iwl3945: remove data_retry_limit
Remove the ununsed variable data_retry_limit
from priv.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:00 -04:00
Abhijeet Kolekar
9744c91f91 iwl3945: rename tx to tx_cmd
Rename iwl3945_tx_cmd variable tx to tx_cmd for better
readability.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:00 -04:00
Abhijeet Kolekar
37dc70fea8 iwlwifi/iwl3945: unify rts_tx_cmd_flag
3945 and 4965 share the functionality for setting RTS and CTS to
the tx_cmd. Unify these functions and move the common
functionality to core.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:00 -04:00
Wey-Yi Guy
92a35bda79 iwlwifi: showing accumulative ucode statistics counters
Adding accumulative statistics counters in iwlwifi driver.
Statistics counters are reported by uCode every beacon interval; but can
be reset by uCode when needed. The accumulative statistics counters is
maintained by driver to keep track of the history of all the counters.

Update the ucode stats files in debugfs to display both latest and
accumulative counters.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:48:00 -04:00
Wey-Yi Guy
88804e2b33 iwlwifi: dynamic allocate tx queue structure
Instead of always allocate the max number of tx queue structure,
use dynamic allocation based on the number of queues in device
configuration. With these changes, device does not have to allocate more
memory than the h/w can support.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:59 -04:00
Ben Cahill
008a9e3e3c iwl3945: move iwl_power_initialize()
iwl_power_initialize() initializes driver data (not device hardware), and does
not need to execute more than once (when the driver initializes).  Therefore, it
does not belong in iwl3945_apm_init(), which initializes hardware, and may run
more than once.

Move it to iwl3945_pci_probe(), where it will run only once.  This agrees
with similar placement in iwl-agn.c's iwl_pci_probe(), although placement
under "services" seemed more appropriate than under "mac80211".

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:59 -04:00
Ben Cahill
743cdf1b65 iwl3945: streamline iwl3945_rfkill_poll()
iwl3945_rfkill_poll() has been silently calling wiphy_rfkill_set_hw_state()
every 2 seconds, regardless of whether hardware RF KILL switch changed state.

Call wiphy_rfkill_set_hw_state() only when RFKILL switch changes.
Add IWL_DEBUG_RF_KILL log message and documentation.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:59 -04:00
Reinette Chatre
1a34c04380 iwlwifi: fix userspace setting of sleep_level_override
The sleep_level_override debugfs file is used by the user to request a
static power index instead of the dynamic sleep values. Users are expected
to provide value from 1 to 5 as an index or -1 to disable it.

The problem at the moment is that users can also provide 0 to this file
which, together with the value 1, is translated to index 1. This is
confusing and even more so when users write 0 to sleep_level_override and
then read 1 from it afterwards.

Modify checking to treat 0 as invalid.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:58 -04:00
Wey-Yi Guy
55036d6602 iwlwifi: additional items in sensitivity range table
Add more items to sensitivity range table to avoid using hardcoded values.
Initialize the table per device since unique per device information is
required to perform sensitivity calibration.

additional items in sensitivity range table:
   .barker_corr_th_min: Barker correlation threshold minimum
   .barker_corr_th_min_mrc: Barker correlation threshold minimum for MRC
   .nrg_th_cca: Energy threshold for Clear Channel Assessment

Barker codes are a technique used in WLAN encoding for transmission.
MRC is "Maximal Ratio Combining", a technique for optimally combining the
signals from 2 or more receivers to achieve a better signal.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:58 -04:00
Wey-Yi Guy
bd35f15082 iwlwifi: remove duplicated/unused definition
"IWL_CMD_QUEUE_NUM" is being defined in multiple places and used by all
the devices. move it to iwl-dev.h file and shared by all the devices.

Remove "IWL_CMD_FIFO_NUM", replaced by "IWL49_CMD_FIFO_NUM" and IWL50_CMD_FIFO_NUM"

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:58 -04:00
Ben Cahill
b660d3adb8 iwlagn, iwl3945: remove apm_reset() functions
Clean up device-specific apm_reset() functions and library infrastructure,
now that these reset() functions are no longer being used.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:58 -04:00
Ben Cahill
278d84051d iwl3945: remove unnecessary call to apm_ops.reset()
Now that we're unconditionally using apm_ops.stop() to reset and power-down
the device in __iwl3945_down(), the apm_ops.reset() is redundant.  Removing
this call will also allow us to remove iwl3945_apm_reset().

Remove unneeded iwl_clear_bit(CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ) because
this bit will be set again very soon in iwl3945_hw_txq_ctx_stop() and other
following calls.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:57 -04:00
Ben Cahill
4d2ccdb948 iwlwifi: turn off device when not used.
In some cases (e.g. when mac80211 calls iwl_mac_stop() for suspend or user
no longer wants device active), device has not been going into low power state
via __iwl_down().  apm_ops.reset() does not put device into low power state;
instead it resets the device, then puts it into a powered-up state ready to be
re-loaded with uCode and re-started.  This has needlessly warmed up user's
laptops and drained batteries.

With current architecture in which mac80211 controls device up/down (including
resetting device after firmware errors), there is no need for apm_ops.reset()
any more; apm_ops.reset() is basically a combination of apm_ops.stop() and
apm_ops.init().

Instead, __iwl_down() now unconditionally places the device into a low-power
state via apm_ops.stop(). Device may be re-started via __iwl_up() calling
apm_ops.init() as soon as it may be needed (e.g. quickly for firmware errors),
but in the meantime, device will stop wasting energy.

Note that, even in this low power state, if driver re-enables interrupts,
the device retains the ability to sense the hardware RF-KILL switch, and
(except for 3945) interrupt the host when it changes.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:57 -04:00
Ben Cahill
f33269b896 iwl3945: update iwl3945_apm_init()
Update iwl3945_apm_init() to set up device registers in sequence most recently
recommended by factory.

Add resets for APMG interrupts and radio chip, formerly done only in
iwl3945_apm_reset(); moving them here assures that apm_init() will do
a complete job of preparing hardware not only after platform boot,
but also after apm_stop() has executed (due to rfkill, ifconfig down,
driver unload, etc.).  This is in preparation to completely remove apm_reset().

Add some comments.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-27 16:47:56 -04:00
Linus Torvalds
c3da31485f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (53 commits)
  vmxnet: fix 2 build problems
  net: add support for STMicroelectronics Ethernet controllers.
  net: ks8851_mll uses mii interfaces
  net/fec_mpc52xx: Fix kernel panic on FEC error
  net: Fix OF platform drivers coldplug/hotplug when compiled as modules
  TI DaVinci EMAC: Clear statistics register properly.
  r8169: partial support and phy init for the 8168d
  irda/sa1100_ir: check return value of startup hook
  udp: Fix udp_poll() and ioctl()
  WAN: fix Cisco HDLC handshaking.
  tcp: fix tcp_defer_accept to consider the timeout
  3c574_cs: spin_lock the set_multicast_list function
  net: Teach pegasus driver to ignore bluetoother adapters with clashing Vendor:Product IDs
  netxen: fix pci bar mapping
  ethoc: fix warning from 32bit build
  libertas: fix build
  net: VMware virtual Ethernet NIC driver: vmxnet3
  net: Fix IXP 2000 network driver building.
  libertas: fix build
  mac80211: document ieee80211_rx() context requirement
  ...
2009-10-15 15:03:17 -07:00
David S. Miller
421355de87 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-13 12:55:20 -07:00
Wey-Yi Guy
d7c76f4c50 iwlwifi: change the order of freeing memory
Need to free the dynamic allocated memory before ieee80211_free_hw();
once call ieee80211_free_hw(), should not reference to "priv" data
structure.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-12 15:55:52 -04:00
David S. Miller
7fe13c5733 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-11 23:15:47 -07:00
Alexey Dobriyan
d43c36dc6b headers: remove sched.h from interrupt.h
After m68k's task_thread_info() doesn't refer to current,
it's possible to remove sched.h from interrupt.h and not break m68k!
Many thanks to Heiko Carstens for allowing this.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-10-11 11:20:58 -07:00
Wey-Yi Guy
f41bb897f2 iwlwifi: validate the signature for EEPROM and OTP
Both 1000 & 6000 series NICs contain on-chip OTP memory that
replaces the off-chip EEPROM memory. The nature of OTP means
there is a limited number of times a particular board can go through the
factory flow and be (re)calibrated. As a consequence there will be some boards
that contain EEPROM memory because OTP blocks were full.

In the signature validation routine, iwlwifi needs to make sure
"select bit" and "EEPROM/OTP signature" agree on the type of
NVM to be used to configure the system.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:45 -04:00
Abhijeet Kolekar
1739d33220 iwlwifi: replace iwl_poll_direct_bit with iwl_poll_bit for CSR access
Replace iwl_poll_direct_bit with iwl_poll_bit when accessing CSR registers.
There is no need to power up the mac to access CSR registers.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Acked-by: Ben M Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:45 -04:00
Abhijeet Kolekar
d68b603cf0 iwlwifi/iwl3945 : unify apm stop operation
Unify the usage of apm_stop_master and apm_stop
across all hardwares.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:45 -04:00
Johannes Berg
e932a609e9 iwlwifi: LED cleanup
The iwlwifi drivers have LED blinking requirements that
mac80211 cannot fulfill due to the use of just a single
LED instead of different ones for TX, RX, radio etc.
Instead, the single LED blinks according to transfers
and is solid on the rest of the time. As such, having
LED class devices registered that mac80211 triggers are
connected to is pointless as we don't use the triggers
anyway.

Remove all the useless code and add hooks into the
driver itself. At the same time, make the LED code
abstracted so the core code that determines blink rate
etc. can be shared between 3945 and agn in iwlcore.

At the same time, the fact that we removed the use of
the mac80211 LED triggers means we can also remove the
IWLWIFI_LEDS Kconfig symbol since the LED support is
now self-contained.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:45 -04:00
Johannes Berg
be1a71a128 iwlwifi: device tracing
In order to have an easier way to debug issues, create
trace events (using the ftrace framework) that will
allow us to follow exactly what the driver is doing
with the device.

The text format isn't all that useful, but the binary
format can also be obtained easily via debugfs and
then analysed on the fly or offline with debugging
tools.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:44 -04:00
Wey-Yi Guy
4d80d7210b iwlwifi: set default aggregation frame count limit to 31
Multiple MPDUs can be aggregated, transmitted, and finally acknowledged
together using a single BA frame. Block ACK (BA) contains
bitmap size of 64*16 bits so the maximum frame count is 64.
The default value of aggregation frame count suggested by uCode is 31 to
achieve best performance.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:44 -04:00
Huaxu Wan
39d5e0ce0f iwlwifi: clear the translate table area
Driver should clear the translate table area after receiving "Alive"
response from uCode. This patch corrects a mistake when doing this.

Signed-off-by: Huaxu Wan <huaxu.wan@linux.intel.com>
Signed-off-by: Guo Chaohong <chaohong.guo@linux.intel.com>
Acked-by: Ben M Cahill  <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:44 -04:00
Wey-Yi Guy
72f0ebd9e0 iwlwifi: change valid EEPROM version for 1000 series
In order to support different type of 1000 series NICs we release to
customers before the production release, iwlwifi driver need to support
all the NICs has EEPROM version greater than 0x15c.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:44 -04:00
Wey-Yi Guy
7812b16730 iwlwifi: reliable entering of critical temperature state
When uCode detects critical temperature it should send "card state
notification" interrupt to driver and then shut itself down to prevent
overheating. There is a race condition where uCode shuts down before it
can deliver the interrupt to driver.
Additional method provided here for driver to enter CT_KILL state based
on temperature reading.

How it works:
Method 1:
If driver receive "card state notification" interrupt from uCode; it
enters "CT_KILL" state immediately

Method 2:
If the last temperature report by Card reach Critical temperature,
driver will send "statistic notification" request to uCode to verify the
temperature reading, if driver can not get reply from uCode within
300ms, driver will enter CT_KILL state automatically.

Method 3:
If the last temperature report by Card did not reach Critical
temperature, but uCode already shut down due to critical temperature.
All the host commands send to uCode will not get process by uCode;
when command queue reach the limit, driver will check the last reported
temperature reading, if it is within pre-defined margin, enter "CT_KILL"
state immediately. In this case, when uCode ready to exit from "CT_KILL" state,
driver need to restart the adapter in order to reset all the queues and
resume normal operation.

One additional issue being address here, when system is in CT_KILL
state, both tx and rx already stopped, but driver still can send host
command to uCode, it will flood the command queue since card was not
responding; adding STATUS_CT_KILL flag to reject enqueue host commands
to uCode if it is in CT_KILL state, when uCode is ready to come out of
CT_KILL, driver will clear  the STATUS_CT_KILL bit and allow enqueue the host
commands to uCode to recover from CT_KILL state.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:44 -04:00
Christian Lamparter
c099752ae0 iwlwifi: drop lib80211 dependency
Ever since Johannes' "iwlwifi: improve scan support" iwlwifi
no longer needs any of lib80211's functions or definitions.

This patch updates iwlwifi's Kconfig _selections_ and
removes all left lib80211.h inclusions from the source files.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:40 -04:00
Huaxu Wan
9554b34ad5 iwlwifi: add module firmware info for 1000 series
The module firmware information of 1000 series is missing from iwlagn.

Signed-off-by: Huaxu Wan <huaxu.wan@linux.intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:37 -04:00
Johannes Berg
78f5fb7fc6 iwlwifi: support idle for 6000 series hw
Using powersave while idle saves a lot of power, but
we've had problems with this on some cards (5150 has
been reported to be problematic). However, on the new
6000 series we're seeing no problems, so for now let
that hardware benefit from idle mode, we can look at
the problems with other hardware one by one and then
enable those once we figure out the problems.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:36 -04:00
Wey-Yi Guy
d8c07e7a84 iwlwifi: Chain Noise Calibration for 6000 series
Adding support of Chain Noise Calibration for 6000 series NICs.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:36 -04:00
Johannes Berg
2b396a1209 iwlwifi: default to using all chains
When instructing the microcode to use just a single
chain when we have power saving enabled, we should
also tell the AP that we are doing SM powersave.
However, using a single chain doesn't actually have
any power saving advantage while idle -- measurements
show that the power consumption is no different when
using one vs. two or three chains.

Therefore, always instruct the microcode to use all
chains.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:36 -04:00
Johannes Berg
9bddbab36d iwlwifi: fix a typo
We never have four chains, but let's fix the typo
while we noticed it. You count 0, 1, 2, 3, not
0, 1, 2, 4 :)

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:35 -04:00
Wey-Yi Guy
02f5dac083 iwlwifi: add LED mode to support different LED behavior
Today's implementation allow LED to blink based on the traffic
condition. We introduce an additional LED mode that reflects the RF
state.

The supported LED modes after this are:
  IWL_LED_BLINK (current/default) - blink rate based on current Tx/Rx
                                    traffic
  IWL_LED_RF_STATE (new) -
    LED OFF: No power/RF disabled, the LED is emitting no light
    LED ON:  Powered/RF enabled, the LED is emitting light
             in a stable non-flashing state.

In order to provide the flexibility to support different LED
behavior per user/system preference we add "led_mode" iwlcore module
parameter.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:35 -04:00
Wey-Yi Guy
5953a62e7d iwlwifi: update PCI Subsystem ID for 6000 series
Update PCI Subsystem ID for 60x0 series based on HW SKU. Adding new SKU
for "ABG" and "BG" only devices.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:35 -04:00
Wey-Yi Guy
4bd0914fa2 iwlwifi: update PCI Subsystem ID for 1000 series
Update PCI Subsystem ID for 1000 series based on HW SKU. Adding new SKU
for "BG" only devices.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:35 -04:00
Wey-Yi Guy
2f748decee iwlwifi: send cmd to uCode to configure valid tx antenna
In order for uCode to select the valid antennas for transmit, driver
need to configure the allowed tx antennas through host command.

The TX_ANT_CONFIGURATION_CMD should be used for 5000 series and up

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:35 -04:00
Daniel C Halperin
e3949d6286 iwlwifi: add aggregation tables to the rate scaling algorithm
Current rate scale algorithm fluctuates between different MIMO modes fairly
rapidly, causing widely varying performance. These fluctuations occur because in
the rate_scale tables for expected throughput the values are not very different
for different modes.

However, when aggregation is turned on and MAC overhead is reduced, the
expected throughput for different MIMO modes grows and different modes have
vastly different performance. Add expected throughput tables for this case.

We also need to keep track of aggregation status per-station, so we add the
"is_agg" field to struct lq_sta.

Also includes cleanup of comments and variable names in/around the affected
code.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:34 -04:00
Daniel C Halperin
91a55ae601 iwlwifi: do not clear TX info flags when receiving BlockAckResponse
OR-in AMPDU flags rather than assigning them.  This lets the TX status for
aggregated packets be processed by rs_tx_status.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:34 -04:00
Daniel C Halperin
95407aa4d4 iwlwifi: clean up rs_tx_status
Cut down on redundant code, reorganize structure, and add/improve comments.
Should contain no functional changes.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:34 -04:00
Wey-Yi Guy
4e30cb691b iwlwifi: use S_IRUGO and S_IWUSR in module parameters
Instead of hardcode module parameter's permissions, use pre-defined.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:34 -04:00
Wey-Yi Guy
1f4b966503 iwlwifi: EEPROM version for 1000 and 6000 series
Update EEPROM version requirement for 1000 and 6000 series of NIC
for EEPROM version verification.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:33 -04:00
Wey-Yi Guy
01abfbb282 iwlwifi: allow user change protection mechanism for HT
Allow user to change protection mechanism for HT between RTS/CTS and
CTS-to-self through sysfs:

Show current protection mechanism for HT
   cat /sys/class/net/wlan0/device/rts_ht_protection

Change protection mechanism for HT (only allowed while not-associated)
CTS-to-self:
   echo 0 > /sys/class/net/wlan0/device/rts_ht_protection
RTS/CTS:
   echo 1 > /sys/class/net/wlan0/device/rts_ht_protection

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:33 -04:00
Wey-Yi Guy
47eef9bd10 iwlwifi: Use RTS/CTS as the preferred protection mechanism for 6000 series
When 802.11g was introduced, we had RTS/CTS and CTS-to-Self protection
mechanisms. In an HT Beacon, HT stations use the "Operating Mode" field
in the HT Information Element to determine whether or not to use
protection.

The Operating Mode field has 4 possible settings: 0-3:
Mode 0: If all stations in the BSS are 20/40 MHz HT capable, or if the
BSS is 20/40 MHz capable, or if all stations in the BSS are 20 MHz HT
stations in a 20 MHz BSS
Mode 1: used if there are non-HT stations or APs using the primary or
secondary channels
Mode 2: if only HT stations are associated in the BSS and at least one
20 MHz HT station is associated.
Mode 3: used if one or more non-HT stations are associated in the BSS.

When in operating modes 1 or 3, and the Use_Protection field is 1 in the
Beacon's ERP IE, all HT transmissions must be protected using RTS/CTS or
CTS-to-Self.

By default, CTS-to-self is the preferred protection mechanism for less
overhead and higher throughput; but using the full RTS/CTS will better
protect the inner exchange from interference, especially in
highly-congested environment.

For 6000 series WIFI NIC, RTS/CTS protection mechanism is the
recommended choice for HT traffic based on the HW design.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:33 -04:00
Johannes Berg
02bb1bea85 iwlwifi: clarify and clean up chain settings
The chain settings we currently use in iwlwifi are
rather confusing -- and we also go by the wrong
settings entirely under certain circumstances. To
clean it up, create a new variable in the current
HT config -- single_chain_sufficient -- that tells
us whether we need more than one chain. Calculate
that based on the AP and operating mode (no IBSS
HT implemented -- so no need for multiple chains,
for station mode we use the AP's capabilities).

Additionally, since APs always send disabled SM PS
mode, keeping track of their sm_ps mode isn't very
useful -- doubly not so for our _own_ RX config
since that should depend on our, not the AP's, SM
PS mode.

Finally, document that our configuration of the
number of RX chains used is currently wrong when
in powersave (by adding a comment).

All together this removes the two remaining items
in struct iwl_ht_config that were done wrong there.

For the future, the number of RX chains and some
SM PS handshaking needs to be added to mac80211,
which then needs to tell us, and the new variable
current_ht_config.single_chain_sufficient should
also be calculated by mac80211.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:33 -04:00
Wey-Yi Guy
e307ddce39 iwlwifi: show NVM version in debugfs
Show version number along with dumping NVM data, the version information
being removed from sysfs, add it back to debugfs to help debugging.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:33 -04:00
Johannes Berg
fad95bf59b iwlwifi: clean up ht config naming
Daniel Halperin pointed out that the naming
here is rather inconsistent with at least 3
different names being used for one thing in
different contexts. Rename the struct to
iwl_ht_config (rather than iwl_ht_info) and
use ht_conf as a variable for it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:32 -04:00
Wey-Yi Guy
f2d0d0e2ba iwlwifi: Adjust blink rate to compensate Clock difference
Adjust led blink rate to compensate on a MAC Clock difference on every
HW. Led blink rate analysis showed an average deviation of 0% on 3945,
5% on 4965 HW and 20% on 5000 series and up.
Need to compensate on the led on/off time per HW according to the
deviation to achieve the desired led frequency
The calculation is: (100-averageDeviation)/100 * blinkTime
For code efficiency the calculation will be:
    compensation = (100 - averageDeviation) * 64 / 100
    NewBlinkTime = (compensation * BlinkTime) / 64

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:32 -04:00
Johannes Berg
c812ee2485 iwlwifi: clean up ht config a little
is_ht can be bool instead of u8, and there's
no need to use IWL_CHANNEL_WIDTH_* constants
in supported_chan_width when that could just
be named is_40mhz instead.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:32 -04:00
Wey-Yi Guy
f3a2a42470 iwlwifi: separate set_hw_params function for 6000 series
Separate set_hw_params() function for 6000
series from 5000/1000 series because:
    1) 6000 series use different set of sensitivity range table
    2) 6000 series has different uCode image size

Also include the new sensitivity parameters needed by sensitivity
algorithm.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:32 -04:00
Wey-Yi Guy
9371d4ed79 iwlwifi: separate nic_config for different NIC
Different NIC has different requirements for configuration. Currently all
5000 series hardware and later share the same configuration function even
though they do not need the same configurations. Fix this by separating the
needed configuration actions for each hardware model.

.5000 series: L1-ASPM H/W bug work-around
              configure radio
              write CSR_HW_IF_CONFIG_REG for uCode use
              work-around for NIC get stuck after early PCIe power off

.1000 series: write CSR_HW_IF_CONFIG_REG for uCode use
              setting digital SVR for 1000 card to 1.32V

.6000 series: configure radio
              write CSR_HW_IF_CONFIG_REG for uCode use
              write CSR_GP_DRIVER_REG to indicate radio sku

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:31 -04:00
Wey-Yi Guy
1b07a13072 iwlwifi: remove un-supported eeprom parameters
Remove few of the parameters not used and no longer valid in EEPROM.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:31 -04:00
Wey-Yi Guy
85fecff155 iwlwifi: modify LED blink index table
Modify LED blink index table to include 1Mbps.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:39:31 -04:00
Bjorn Helgaas
0358bc293e iwlwifi: use %pM for formatted MAC addresses
User-visible messages should use formatted MAC addresses ("00:01:...")
rather than raw ("0001...") so they match other parts of the system.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
CC: ilw@linux.intel.com
CC: linux-wireless@vger.kernel.org
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:33:51 -04:00
Reinette Chatre
886e71de1f iwlagn: fix compile warning in iwl5000_gain_computation
The return type of abs() was recently changed from int to long. With
min()'s type checking we thus need to make sure that values of the same
type are compared.

This fixes:

    CC [M]  drivers/net/wireless/iwlwifi/iwl-5000.o
drivers/net/wireless/iwlwifi/iwl-5000.c: In function ‘iwl5000_gain_computation’:
drivers/net/wireless/iwlwifi/iwl-5000.c:320: warning: comparison of distinct pointer types lacks a cast

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reported-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:33:50 -04:00
Reinette Chatre
9024adf5c8 iwlwifi: fix compile warning
Fixes following on big endian systems:
  CC [M]  drivers/net/wireless/iwlwifi/iwl-rx.o
  drivers/net/wireless/iwlwifi/iwl-rx.c: In function ‘iwl_rx_reply_rx’:
  drivers/net/wireless/iwlwifi/iwl-rx.c:1029: warning: integer overflow in
  expression

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reported-by: Marcel Holtmann <marcel@holtmann.org>
Tested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:33:50 -04:00
Wey-Yi Guy
722d9b1e1e iwlwifi: fix EEPROM enhance tx power offset
Set the correct EEPROM offset for enhance tx power for 6000 series

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:33:50 -04:00
Jay Sternberg
2facba769d iwlwifi: incorrect method used for finding valid OTP blocks
The address stored in the next link address is a word address but when
reading the OTP blocks, a byte address is used. Also if the blocks are
full and the last link pointer is not zero, then none of the blocks are
valid so return an error.

The algorithm is simply valid blocks have a next address and that
address's contents is zero.

Using the wrong address for the next link address gets arbitrary data,
obviously. In cases seen, the first block is considered valid when it is not.

If the block has in fact been invalidated there may be old data or
there may be no data, bad data, or partial data, there is no way of
telling. Without this patch it is possible that a device with valid OTP data
is unable to work.

Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-10-07 16:33:49 -04:00
Reinette Chatre
b7a794048f iwlwifi: fix 3945 ucode info retrieval after failure
When hardware or uCode problem occurs driver captures significant
information from device to enable debugging. The format of this information
is different between 3945 and 4965 and later devices, yet currently the
3945 uses the 4965 and later format. Fix this by adding a new library call
that is initialized to the correct formatting routine based on device.

This moves the iwlagn event and error log handling back to iwl-agn.c to
make it part of iwlagn module.

Also remove the 3945 sysfs file that triggers dump of event log - there is
already a debugfs file that can do it for all drivers.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-28 16:55:05 -04:00
Reinette Chatre
2814298639 iwlwifi: fix memory leak in command queue handling
Also free the array of command pointers and meta data of each
command buffer when command queue is freed.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-28 16:55:04 -04:00
Reinette Chatre
2fac9717a0 iwlwifi: fix debugfs buffer handling
We keep track of where to write into a buffer by keeping a count of how
much has been written so far. When writing to the buffer we thus take the
buffer pointer and adding the count of what has been written so far.
Keeping track of what has been written so far is done by incrementing
this number every time something is written to the buffer with how much has
been written at that time.

Currently this number is incremented incorrectly when using the
"hex_dump_to_buffer" call to add data to the buffer. Fix this by only
adding what has been added to the buffer in that call instead of what has
been added since beginning of buffer.

Issue was discovered and discussed during testing of
https://bugzilla.redhat.com/show_bug.cgi?id=464598 .

When a user views any of these files they will see something like:

[  179.355202] ------------[ cut here ]------------
[  179.355209] WARNING: at ../lib/vsprintf.c:989 vsnprintf+0x5ec/0x5f0()
[  179.355212] Hardware name: VGN-Z540N
[  179.355213] Modules linked in: i915 drm i2c_algo_bit i2c_core ipv6 acpi_cpufreq cpufreq_userspace cpufreq_powersave cpufreq_ondemand cpufreq_conservative cpufreq_stats freq_table container sbs sbshc arc4 ecb iwlagn iwlcore joydev led_class mac80211 af_packet pcmcia psmouse sony_laptop cfg80211 iTCO_wdt iTCO_vendor_support pcspkr serio_raw rfkill intel_agp video output tpm_infineon tpm tpm_bios button battery yenta_socket rsrc_nonstatic pcmcia_core processor ac evdev ext3 jbd mbcache sr_mod sg cdrom sd_mod ahci libata scsi_mod ehci_hcd uhci_hcd usbcore thermal fan thermal_sys
[  179.355262] Pid: 5449, comm: cat Not tainted 2.6.31-wl-54419-ge881071 #62
[  179.355264] Call Trace:
[  179.355267]  [<ffffffff811ad14c>] ? vsnprintf+0x5ec/0x5f0
[  179.355271]  [<ffffffff81041348>] warn_slowpath_common+0x78/0xd0
[  179.355275]  [<ffffffff810413af>] warn_slowpath_null+0xf/0x20
[  179.355277]  [<ffffffff811ad14c>] vsnprintf+0x5ec/0x5f0
[  179.355280]  [<ffffffff811ad23d>] ? scnprintf+0x5d/0x80
[  179.355283]  [<ffffffff811ad23d>] scnprintf+0x5d/0x80
[  179.355286]  [<ffffffff811aed29>] ? hex_dump_to_buffer+0x189/0x340
[  179.355290]  [<ffffffff810e91d7>] ? __kmalloc+0x207/0x260
[  179.355303]  [<ffffffffa02a02f8>] iwl_dbgfs_nvm_read+0xe8/0x220 [iwlcore]
[  179.355306]  [<ffffffff811a9b62>] ? __up_read+0x92/0xb0
[  179.355310]  [<ffffffff810f0988>] vfs_read+0xc8/0x1a0
[  179.355313]  [<ffffffff810f0b50>] sys_read+0x50/0x90
[  179.355316]  [<ffffffff8100bd6b>] system_call_fastpath+0x16/0x1b
[  179.355319] ---[ end trace 2383d0d5e0752ca0 ]---

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-28 16:55:04 -04:00
Stanislaw Gruszka
6c6a22e268 iwlagn: fix panic in iwl{5000,4965}_rx_reply_tx
In some cases firmware can give us bad value of index in transmit
buffers array. This patch add sanity check for such values and return
from processing function instantly when it happens.

https://bugzilla.redhat.com/show_bug.cgi?id=521931

Patch was tested by reporter on iwl5000. I think check can be also
helpful for 4965.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-23 11:35:54 -04:00
Reinette Chatre
f82a924cc8 iwlwifi: reduce noise when skb allocation fails
Replenishment of receive buffers is done in the tasklet handling
received frames as well as in a workqueue. When we are in the tasklet
we cannot sleep and thus attempt atomic skb allocations. It is generally
not a big problem if this fails since iwl_rx_allocate is always followed
by a call to iwl_rx_queue_restock which will queue the work to replenish
the buffers at a time when sleeping is allowed.

We thus add the __GFP_NOWARN to the skb allocation in iwl_rx_allocate to
reduce the noise if such an allocation fails while we still have enough
buffers. We do maintain the warning and the error message when we are low
on buffers to communicate to the user that there is a potential problem with
memory availability on system

This addresses issue reported upstream in thread "iwlagn: order 2 page
allocation failures" in
http://thread.gmane.org/gmane.linux.kernel.wireless.general/39187

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-23 11:35:53 -04:00
Reinette Chatre
bba98871c6 iwlwifi: do not send sync command while holding spinlock
commit 10c994ca70e8e94bbc85a5bf13de5911ee8de4d2 "iwlwifi: fix remove key
error" fixed an error reported by mac80211 during interface down. The fix
involved changing an async command to synchronous. Unfortunately this was
inside a spinlock section in which we cannot sleep.

Modify the sending of the command back to async. This causes the mac80211
error "mac80211-phy0: failed to remove key (0, ff:ff:ff:ff:ff:ff) from
hardware (-16)." to return. This error is not serious since this occurs
during interface down and the keys will be cleared anyway when ucode is
unloaded. Having this error message is thus less serious than a potential
deadlock introduced when sleeping while holding a spinlock. We will have to
find another fix for that error.

This is a revert of the abovementioned commit.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-23 11:35:53 -04:00
Johannes Berg
96d8c6af24 iwlwifi: disable powersave for 4965
There's a bug in 4965 powersave that appears to
be related to the way it keeps track of its data
during sleep, but we haven't found it yet. Due to
that, using powersave may spontaneously cause the
device to SYSASSERT when transitioning from sleep
to wake. Therefore, disable powersave for 4965,
until (if ever, unfortunately) we can identify
and fix the problem.

Cf. http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=1982
which was closed, but now has re-appeared with
IDLE mode, which probably means we never really
fixed it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-23 11:35:40 -04:00
Wey-Yi Guy
4a86eaa46d iwlwifi: find the correct first antenna
We can not assume antenna "A" is the first valid anttena for
all the NIC. Need to make sure choice the correct antenna based on
h/w configuration for transmit to avoid sending frame on invalid
antenna

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-23 11:35:40 -04:00
Reinette Chatre
de0bd50845 iwlwifi: fix potential rx buffer loss
RX handling maintains a few lists that keep track of the RX buffers.
Buffers move from one list to the other as they are used, replenished, and
again made available for usage. In one such instance, when a buffer is used
it enters the "rx_used" list. When buffers are replenished an skb is
attached to the buffer and it is moved to the "rx_free" list. The problem
here is that the buffer is first removed from the "rx_used" list _before_ the
skb is allocated. Thus, if the skb allocation fails this buffer remains
removed from the "rx_used" list and is thus lost for future usage.

Fix this by first allocating the skb before trying to attach it to a list.
We add an additional check to not do this unnecessarily.

Reported-by: Rick Farrington <rickdic@hotmail.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-23 11:35:40 -04:00
Daniel C Halperin
c929c5a128 iwlwifi: fix HT operation in 2.4 GHz band
When we cleaned up the driver to properly tell mac80211 about HT rates
("iwlwifi: use iwl_hwrate_get_mac80211_idx where appropriate"), we broke
internal rate indexing in 2.4 GHz band.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Tested-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-23 11:35:40 -04:00
Reinette Chatre
af472a953e iwl3945: reduce debug noise when default debug flags used
Significant literature suggests users use debug flags 0x43fff - this causes
the debug flags to be set that causes information to be printed for every
received frame - including beacons. In the best case it fills up the logs,
at worst it slows driver down and causes failures due to timeouts.

In the RX handler, print debugging only if user requested RX debugging.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-31 14:42:11 -04:00
Reinette Chatre
b57d46aa0d iwlwifi: fix situation in which debug message is printed
3945 does not have update_chain_flags defined and because if this we always
see the debug message that does not apply to it. Add a check to be specific
about what is actually happening.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-31 14:42:10 -04:00
Johannes Berg
4c561a0229 iwlwifi: use sleep interval succession
Some concerns were raised about the automatic adjustment
of sleep intervals to all the same, potentially high,
value, and I can imagine the hardware behaving better
when we don't ask too much of it.

So let's convert to use a succession of sleep levels
when requesting to go to deeper sleeps (which can only
happen with large DTIM intervals), using the succession
values from power level three, which have the benefit of
also having been tested extensively already.

As a result, the automatic sleep level adjustment will
now be mostly equivalent to power level three, except
for the RX/TX timeouts and possibly using smaller sleep
vectors to account for networking latency.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-31 14:42:10 -04:00
Daniel C Halperin
31513be8a0 iwlwifi: use iwl_hwrate_get_mac80211_idx where appropriate
For HT packets, mac80211 expects the rate_idx to be an MCS number, which is the
lower byte of rate_n_flags.  However, iwl_hwrate_to_plcp_idx takes the MCS
number and reduces it down to the range 0-8 (6 to 60 Mbps), removing the bits
that signify multiply streams, HT40 Duplicate mode, or unequal modulation.
This version is used for various internal purposes through the driver.

Add the function iwl_hwrate_get_mac80211_idx, an alternate version which takes
the rate and the band and returns the mac80211 index (MCS, for HT packets, and
PLCP rate, for legacy packets).

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-31 14:42:10 -04:00
Daniel C Halperin
b58ef214b7 iwlwifi: remove incorrect uses of ieee80211_get_tx_rate to prevent TX stall
Refactor and correct rate selection for outgoing transmitted
packets.

First, note that HT rates in the mac80211 rate table do not provide valid
indices when ieee80211_get_tx_rate is called; the check to see if we could to
abort a transmission early in iwl_tx_skb() would thus occasionally read invalid
memory and occasionally stall transmission (if the erroneous byte was 0xff).
We remove that code; the check wasn't valid anyway.

Second, iwl_tx_cmd_build_rate() also called ieee80211_get_tx_rate to be used
for sending management packets, which do not use the uCode station table.  This
patch refactors that function and adds comments to enhance legibility, replaces
the call to ieee80211_get_tx_rate() with a direct lookup, and adds error
handling in case the table entry is invalid.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-31 14:42:09 -04:00
Daniel C Halperin
5027309b55 iwlwifi: remove 60 Mbps from sband bitrates table
ieee80211_supported_band is supposed to only contain legacy rates in the
bitrates table (HT rates go in the ieee80211_sta_ht_cap substruct).  Make
iwlwifi driver obey this restriction by removing the 60 Mbps rate. Also, clean
up a few pieces of other code that formerly relied on 60 Mbps being in
sband->bitrates.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-31 14:42:09 -04:00
Johannes Berg
1303dcfd05 iwlwifi: fix ICT irq table endianness
The ICT IRQ table is a set of __le32 values, not u32 values,
so when reading it we need to take into account that it has
to be converted to CPU endianness. This was causing a lot of
trouble on my powerpc box where various things would simply
not work for no apparent reason with 5xxx cards, but worked
with 4965 -- which doesn't use the ICT table.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:53 -04:00
Wey-Yi Guy
5bddf54962 iwlwifi: fix unloading driver while scanning
If NetworkManager is busy scanning when user
tries to unload the module, the driver can not be unloaded
because HW still scanning.

Make sure driver sends abort scan host command to uCode if it
is in the middle of scanning during driver unload.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:39 -04:00
Abhijeet Kolekar
b2ccb4dbe7 iwlwifi: fix remove key error
Fix following error by sending synchronous command and waiting for the command
to complete.

mac80211-phy0: failed to remove key (0, ff:ff:ff:ff:ff:ff) from hardware (-16).

-16 is EBUSY error. The asynchronous command tests for STATUS_EXIT_PENDING
while interface is getting down and it returns -EBUSY error if set.
Changing the host command from asynchronous call to synchronous call
enables command to be run while interface is going down.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:39 -04:00
Wey-Yi Guy
ab9fd1bf76 iwlwifi: read enhanced tx power info from EEPROM image
For 6000 series and up, additional enhanced regulatory tx power
limitation information is added to EEPROM image.

In order to setup the tx power limitation per channel correctly. Read
the enhanced tx power information from EEPROM image and update
accordingly.

The information is provided per SISO (a,b,c) chain based, it also has
information for both MIMO2 and MIMO3. For tx power regulatory
limitation, take the highest number from all the chains and update.
Also update tx_power_user_lmt to the highest power supported by any
channels and chains

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:39 -04:00
Wey-Yi Guy
c4d9b50986 iwlwifi: remove duplicated define
Remove duplicated define "STA_FLG_PWR_SAVE_MSK"

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:38 -04:00
Daniel C Halperin
c5f8cdb72e iwlwifi: set HT flags in ieee80211_rx_status for received packets
Add code to set the HT flags (HT, 40 MHz, Short guard interval) in
the ieee80211_rx_status field passed to mac80211.  This ensures that mac80211
processes these HT packets correctly.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:38 -04:00
Daniel C Halperin
7ebaeff8ae iwlwifi: clear rate control flags on non-HT packet
Clear the flags (most importantly, the IEEE80211_TX_RC_MCS flag)
when sending a non-HT packet so that the rate index can be properly treated.
This fixes the reporting of legacy rates in wireless-extensions for packets
sent after an HT packet.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:38 -04:00
Wey-Yi Guy
f204b2487e iwlwifi: show current tx power
debugFs file show current tx power for all the transmit chains

Adding "tx_power" file in /sys/kernal/debug/ieee80211/phy0/iwlagn/debug
to display current tx power for all the active chains in 1/2 dB step.

Show tx power information "Not available" if uCode can not provide the
information or interface is down.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:37 -04:00
Wey-Yi Guy
fcbaf8b06d iwlwifi: change IWL6000_UCODE_API_MAX to v4
uCode version changed to v4 for 6000 series

The additional parameter added to v4 is providing current tx power for
each chain in tx statistics portion of "statistics notification"
command.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:37 -04:00
Wey-Yi Guy
5eadd94bd4 iwlwifi: error checking for setting tx_power in sysfs
Perform error checking and report failure when setting tx power from
sysfs.
If fail to set the tx power, do not update the local copy, so user will
not see the incorrect tx power in sysfs

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:37 -04:00
Wey-Yi Guy
dc1b097332 iwlwifi: name changes from "tx_power_channel_lmt" to "tx_power_device_lmt"
Changing the name from "tx_power_channel_lmt" to "tx_power_device_lmt";
to give idea that scope of limit is for overall device, not any
individual channels

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:37 -04:00
Wey-Yi Guy
08f2d58d0e iwlwifi: do not allow set tx power over channel power limit
When setting tx power in sysfs, check against max channel tx power
limit instead of IWL_TX_POWER_TARGET_POWER_MAX.

Different devices have different max tx power limit; using
IWL_TX_POWER_TARGET_POWER_MAX can excess the limitaion and give wrong
information.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:36 -04:00
Wey-Yi Guy
02eec9c5a1 iwlwifi: set default tx power user limit to minimal
Set the tx_power_user_lmt to the lowest power level
this value will get overwritten by channel's max power avg
from eeprom

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-28 14:40:36 -04:00