The return value of snprintf() is the number of bytes which would
have been copied if there was enough space, but we want the number of
bytes actually copied.  The scnprintf() function does this.

Also in theory, a %u can take take 10 digits so we may as well make
the buffer larger as well.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Firmware crashes while starting Soft AP in 32 bit x86 platform.
The reason is that the single dma buffer (ar_sdio->dma_buffer)
is used in ath6kl_sdio_read_write_sync() for unaligned buffer
handling and this function is called in the multiple context
at the same time. So, finally hits dma buffer corruption and
firmware crash.

Mutex is used to protect dma buffer to avoid data corruption.
Spin lock can not used to fix this issue since mmc stack
read/write calls may for sleep.

Observed this issue with recently commited patch
"ath6kl: Claim sdio function only at appropriate places"
861dd058

kvalo: change name of mutex to more descriptive and add a comment
about what it protects
Signed-off-by: NRaja Mani <rmani@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

There is an unlock missing on this error path.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

The maximum number of supported virtual interfaces are 3.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Currently the max number of vifs which can be used for non-p2p
mode is determined in ath6kl_core_alloc(). But the maximum
supported vifs are parsed from firmware IE in ath6kl_fetch_fw_api2()
which would happen after ath6kl_core_alloc().
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

This modparam was introduced to enable non-p2p mode operation
on two virtual interfaces. It does not seem to be necessary to
have a separate module parameter to do that. Instead, this option
can be enabled when any one of the interfaces is not going to be
used for p2p (ath6kl_p2p).
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

The ath6kl responds to probe-requests in HW while operating as an AP. It
supports offloading exclusions to support the WPS, WPS2, P2P and
802.11u protocols.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

This patch supports Marvell chipset 88W8797 (Avastar) with
SDIO interface.

The corresponding firmware image file is located at:
"mrvl/sd8797_uapsta.bin"
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NTristan Xu <xurf@marvell.com>
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NKiran Divekar <dkiran@marvell.com>
Signed-off-by: NFrank Huang <frankh@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Don't use the interruptible variant of mutex_lock(). It doesn't really
need to be interruptible. This avoids nasty error handling.
Signed-off-by: NMichael Buesch <m@bues.ch>
Acked-by: NChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Convert various seemingly still compiled wireless drivers' .get_drvinfo
routines to use the preferred strlcpy() routine.
Signed-off-by: NRick Jones <rick.jones2@hp.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add and use pr_fmt and pr_<level>
Remove useless double parentheses from macros.
Remove function names from format strings, add to pr_debug use.
Coalesce formats.
Remove uncompileable undeclared variable in a DMA_NONE use.
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

Remove all wlan weight macros and group it together for better
understanding & readability. It makes the code reusable for
AR9462 wlan weights.
Signed-off-by: NRajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch removes btcoex_enable from stomp type change and let
it be called from callee functions that makes the code can be
reusable for MCI changes.
Signed-off-by: NRajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When operating AP interface is brough down the mode is reset to
STA. This STA will be reconfigured into AP mode when the interface
is brought up again. This sequence will be successful only when
change_virtual_intf() returns with no error, but there is a
check in this callback which does the type change only when
that interface is active. This callback does nothing more
than saving the new interface type to vif and wdev, so the
sanity check for interface state and wmi state is not necessary.
This makes the AP interface functional again after interface down/up.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Connect control flag CONNECT_WPS_FLAG has to be cleared
by default even if the driver receives zero length IE
from cfg80211.

Otherwise this flag would be always set after WPS exchange
which would lead wpa_supplicant to fail to connect with
the received WPS credentials. This issue is observed only
in OPEN security.

kvalo: use cfg80211 instead of CFG in the commit log
Signed-off-by: NRaja Mani <rmani@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Not all firmwares support multiple vifs and we need to read the limit from
the firmware image.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Needed when detecting how many vifs firmware supports.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

When adding ar6004 SDIO support I forgot to add corresponding
MODULE_FIRMWARE() definitions to sdio.c.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Part of ath6kl uses "REV3" style of naming hardware versions and elsewhere
"hw 2.1.1" is used instead for the same version. This is confusing, use
the latter term everywhere.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

To make it easier to print name for each hardware type. Also move the hw
info print to ath6kl_init_hw_start() which is more logical place for it.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Board data address can change between firmwares so we need to read that
from the firmware image.

Also fix debug log for the patch address to print the address in hex.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

This is to make it configurable by firmware IEs. Also determine if we need
to write or read the board address to the chip by checking if board address
is set or not.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

It's easier to handle the values when they are defined in a struct.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Having separate defines, in a different file, makes it difficult to read
the actual values. As we are just setting named fields in a struct
the defines don't make any sense anymore.

There are no functional changes, only moving of constants.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

OPEN_AUTH is passed as dot11_auth_mode by default, this would
affect the AP mode when configured with shared authentication
type. Assign appropriate auth type to fix this from driver.
A patch in wpa_supplicant (wpa_supplicant: Set configured auth_algs)
is also needed to fix this.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

vif->def_txkey_index is set to key_index in ath6kl_cfg80211_add_key().
If the interface is configured with multiple static wep keys,
vif->def_txkey_index would be holding the index of the last key configured,
not the default tx key index. Remove this unnecessary default key index setting
in ath6kl_cfg80211_add_key() to configure the right key index in WEP thereby
make it work when multiple wep keys are configured.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Now two modules are built, ath6kl_sdio.ko and ath6kl_usb.ko. But the USB
module isn't fully functional yet as HTC layer is missing support and
that's why it's marked as experimental for now.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

As HTC layer doesn't support USB devices return an error if that happens.
USB support will be added to HTC in the future, this is just a temporary
solution.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Add USB support for ar6004. Currently only firmware can be booted,
no commands can be sent to firmware yet as HTC layer doesn't work
with USB yet.

Based on patches by Kevin Fang.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

In some rare cases core code needs to know what hif type is used. Add
a field to struct ath6kl to denote that. Hopefully this is just a
temporary solution.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Add support for AR6004 SDIO. Tested scan, association (open mode) and
ping.

kvalo: change commit log a bit, drop board address changes
Signed-off-by: NNaveen Gangadharan <ngangadh@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

These have changed a bit since last time ar6004 code was commited.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Add also hw 1.1.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

This is preparation for USB support which will have different diag
commands.

Based on code by Kevin Fang.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

SDIO and USB have different maximum sizes for BMI commands so make that
configurable.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

In preparation for USB support which has it's own method for bmi.

Based on code by Kevin Fang.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

The firmware expects the minimum length of
WMI_SEND_PROBE_RESPONSE_CMDID to be 13. However, when the device is a
P2P GO and it needs to send a probe response to a non-P2P client,
there are no P2P IEs to be added, and therefore the length of the WMI
command is 12. This command gets rejected by the firmware. To fix
this, add an extra byte to satisfy the minimum length requirement.
Signed-off-by: NAarthi Thiruvengadam <athiruve@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

When the connect event is received from the target in IBSS mode,
cfg80211_ibss_joined() is called without informing BSS info to
cfg80211 layer which internally hits the below WARN_ON message.

WARNING: at net/wireless/ibss.c:33 __cfg80211_ibss_joined+0x153/0x180 [cfg80211]()
[..]
[ 4916.845878] Call Trace:
[ 4916.845889]  [<c10427d2>] warn_slowpath_common+0x72/0xa0
[ 4916.845905]  [<f8bccc63>] ? __cfg80211_ibss_joined+0x153/0x180 [cfg80211]
[ 4916.845918]  [<f8bccc63>] ? __cfg80211_ibss_joined+0x153/0x180 [cfg80211]
[ 4916.845923]  [<c1042822>] warn_slowpath_null+0x22/0x30
[ 4916.845934]  [<f8bccc63>] __cfg80211_ibss_joined+0x153/0x180 [cfg80211]
[ 4916.845941]  [<c1025108>] ? default_spin_lock_flags+0x8/0x10
[ 4916.845952]  [<f8bb7fcd>] cfg80211_process_rdev_events+0x19d/0x220 [cfg80211]
[ 4916.845962]  [<f8bb669b>] cfg80211_event_work+0x2b/0x50 [cfg80211]
[ 4916.845968]  [<c105aae6>] process_one_work+0x116/0x3c0
[ 4916.845977]  [<f8bb6670>] ? cfg80211_get_dev_from_info+0x40/0x40 [cfg80211]
[ 4916.845982]  [<c105cdf0>] worker_thread+0x140/0x3b0
[ 4916.845986]  [<c105ccb0>] ? manage_workers+0x1f0/0x1f0
[ 4916.845991]  [<c1060c64>] kthread+0x74/0x80
[ 4916.845995]  [<c1060bf0>] ? kthread_worker_fn+0x160/0x160
[ 4916.846001]  [<c14e7bbe>] kernel_thread_helper+0x6/0x10
[ 4916.846005] ---[ end trace 769254924e409367 ]---

This patch make sures that BSS info is delivered via cfg80211_inform_bss()
to cfg80211 in advance before intimating IBSS status to cfg80211.

In addition to this, one debug message is also added to know
ad-hoc mode status (creator/joiner).

kvalo: change subject
Signed-off-by: NRaja Mani <rmani@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>