gcc produces a harmless warning about a recently introduced
signed integer overflow:

drivers/net/wireless/rsi/rsi_91x_hal.c: In function 'rsi_prepare_mgmt_desc':
include/uapi/linux/swab.h:13:15: error: integer overflow in expression [-Werror=overflow]
  (((__u16)(x) & (__u16)0x00ffU) << 8) |   \
   ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
include/uapi/linux/swab.h:104:2: note: in expansion of macro '___constant_swab16'
  ___constant_swab16(x) :   \
  ^~~~~~~~~~~~~~~~~~
include/uapi/linux/byteorder/big_endian.h:34:43: note: in expansion of macro '__swab16'
 #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
                                           ^~~~~~~~
include/linux/byteorder/generic.h:89:21: note: in expansion of macro '__cpu_to_le16'
 #define cpu_to_le16 __cpu_to_le16
                     ^~~~~~~~~~~~~
drivers/net/wireless/rsi/rsi_91x_hal.c:136:3: note: in expansion of macro 'cpu_to_le16'
   cpu_to_le16((tx_params->vap_id << RSI_DESC_VAP_ID_OFST) &
   ^~~~~~~~~~~

The problem is that the 'mask' value is a signed integer that gets
turned into a negative number when truncated to 16 bits. Making it
an unsigned constant avoids this.

Fixes: eac4eed3 ("rsi: tx and rx path enhancements for p2p mode")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

When AP or P2P GO VAP is running, power save configuration should
be disallowed. To check interface type in power save configuration
'vif' parameters is passed.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Data descriptor is updated to include vap_id. TX command frame
key config also updated to include vap_id.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Parameter 'vif' is passed to inform_bss_status function to
check the type of vif and to get vap_id.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Remain-on-channel and cancel-remain-on-channel are implemented
to support p2p listen phase.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

STA_OPMODE and AP_OPMODE macros are renamed to RSI_OPMODE_STA
and RSI_OPMODE_AP. New opmodes are added to this list for P2P
support. Mapping of mac80211 interface types to rsi interface
types are added.
Add and remove interface callbacks are handled for P2P mode.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Station id should be set in load key frame configured to device.
For WEP mode, key is configured once from mac80211. This key is
saved and configured to device every time a station is connected.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

TX command frame ampdu aggregation parameters is updated to
include sta_id for AP mode.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

TX command frame auto rate request is modified to use common
descriptor struture.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Station id needs to be get for data and management frames
to fill in the descruptor for AP mode. Few other changes
related to AP mode are covered here.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Station structures are maintained in driver with required
fields. When mac80211 callback sta_add is called, driver
iterates through list of connected stations to check available
index and assigns station id which is important for further
communication to that station. Then peer notify frame is send
to firmware to inform the firmware about new station connection.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Mac80211 config parameter BEACON_ENABLE is handled. When VAP
capabilities frame with AP mode is configured to firmware, beacon
events start coming to host at each PreTBTT. At this time, beacon
is taken from mac80211, descriptor is prepared and send to firmware.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

AP mode is handled in add_interface callback of mac80211.
Also for AP mode, sending rx filter frame to disallow beacons
to host is added. Station structures are initialized to NULL.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Provision is added for configuring RTS threshold by sending
vap dynamic update frame to firmware.
Signed-off-by: NKarun Eagalapati <karun256@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

This patch adds support for U-APSD power save. Configuration
frame is downloaded to firmware with default settings and
support is advertised to mac80211
Signed-off-by: NKarun Eagalapati <karun256@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

This patch adds support for legacy power save. Necessary
configuration frames are downloaded to firmware when power save
is enabled/disabled
Signed-off-by: NKarun Eagalapati <karun256@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

TX command frame set_antenna is modified to use common
descriptor structure. Also it's subframe type is set.
Signed-off-by: NPavani Muthyala <pavani.muthyala@redpinesignals.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

TX command frame block/unblock data is modified to
use common descriptor structure.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

TX command frame set_key is modified to use common descriptor
structure.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

VAP capablities frame configured to device is modified to use
common descriptor structure.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

TX command frame set_channel is modified to use common
descriptor structure. Also DFS channel indication to firmware
is added in the descriptor for dfs channels configuration.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Baseband RF programming frame configured to device is modified
to use common descriptor structure.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

AMPDU aggregation parameters frame configured to device is
modified to use common descriptor structure.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

TX command frame peer notify is updated to use common descriptor
structure. MPDU density value added to the frame.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Radio capabilities frame is updated to use common descriptor
structure. Also, few changes to this frame is done like hardware
queues are increase to 12 from 8, default channel number is included.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

For all TX command packets immediate wakeup bit needs to be
set in descriptor. This will make sure device will wakeup if it
is in any sleep state. Priority of the packet is also set.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

All internal management packets (command packets) use some common
fields and some packet specific fields for packet descriptors.
This patch adds some common structures which are needed for all
command packets.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

This patch covers some enhancements in data packet descriptor
preparation especially for EAPOL, multicast/broadcast packets.
Signed-off-by: NPavani Muthyala <pavani.muthyala@redpinesignals.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Currently this descriptor is prepared with the help of __le16
pointer. This patch makes use of a structure to prepare the
descriptor in a cleaner way.
Signed-off-by: NPavani Muthyala <pavani.muthyala@redpinesignals.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Management descriptor preparation is move to a separate function
as it will be called from a different context in upcoming patches.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

EEPROM read frame is sent during device initialization to read mac address.
The format of the frame is modified in firmware to include eeprom length
and offset. This frame does not return firmware version now. Also same
frame is sent again to read rf type and band information.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

After successful loading of firmware, a CARD READY indication is
received by host. Common device configuration parameters are sent
to the device after this. It includes information like device
operating mode (Wi-Fi alone or BT coex), power save related
parameters, GPIO information etc. As device supports BT coex,
this frame is send in COEX queue initially. Based on the operating
mode, CARD READY indication is received from each protocol module
in firmware i.e. WLAN, BT.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NAmitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Transmit power level in a channel is determined based on the dfs region.
To support regulatory rules dfs region should be configured to device during
set channel request. Also antenna gain values are taken from the mac80211
channel parameters instead of fixed values.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

RSI 9113 device supports single antenna for tx and rx. Support for using
external is added. This can be configured from user space using iw.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

TX power can be configured from iwconfig, iw or from mac80211 when
regulatory changes are done. Hence support for configuring tx power
to device is added using the RADIO_PARAMS_UPDATE command frame.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Filtering rx frames after connection in station mode avoids the
overhead of processing un-necessary frames. Hence rx filter frame
is added which can be configured to device at suitable times.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

* Command frame vap_capabilites is modified to use for vap add, vap delete
  and vap update in firmware, hence new filed vap status is added.
* When interface is down this frame needs to be send with vap status delete.
  Otherwise it is considered as wrong frame for the same interface in firmware.
* vap_update status is reserved for future.
Signed-off-by: NPrameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

Added support for host based bgscan. The h/w queues are blocked
while bgscan is being performed and after coming to the connected
channel, the queues are unblocked.
Signed-off-by: NJahnavi Meher <jahnavi.meher@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Adding support for 5GHz.
Signed-off-by: NJahnavi Meher <jahnavi.meher@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use SGI if configured while sending data packets at a fixed rate.
Signed-off-by: NJahnavi Meher <jahnavi.meher@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>