The firmware uses the SCR_PAD2 register to read the board type passed
from the driver.  The values don't match the ones used in the mac and
phy configuration, so we need to map them before writing.  This commit
adds a translation table that is used when writing the board type to
SCR_PAD2.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Different board types (ie. FPGA, HDK and DVP/EVB) require slightly
different init configuration options.  Since we cannot probe the type
of board from the actual hardware, we need to pass it as an option
during module load.

This patch adds a module parameters that accepts the 3 different board
types, with DVP/EVB as the default, and uses this value where needed.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Set an alternate HT cap allowing MIMO rates (but only 20mhz) channels,
when the module is loaded with ht_mode=mimo.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Define the default HT capabilities of the 18xx chip family - these include
support for wide-channel.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Add a HW op to add extra enabled rates for AP-mode data-rates. Since
the rates might depend on channel properties, reconfigure AP-mode rates
when these change.

Implement the HW op for the 18xx family, where MIMO or wide-chan rates
can be added.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Parse the peer ht_cap element containing MCS8-MCS15 rates and pass it
to the FW. Rates unsupported by the HW will be sanitized by mac80211
before reaching us.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Enable wide-chan or MIMO rates when appropriate.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Translate the NL80211 channel type to a FW-specific channel type and send
it to the FW as part of the role-start command. For wl12xx this has no
effect - this element is treated as padding.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Track the current 802.11 channel type, defaulting to a NO_HT channel.
Update the channel type element when changed by mac80211.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Now wlcore requires the lower drivers to set the correct
configuration.  Move the existing private configuration to the proper
place and add all generic configuration parameters.

The important changes are in Tx interrupt pacing and Rx BA window size.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Some chip families can checksum certain classes of Rx packets in FW.
Implement the Rx-checksum feature as a HW-op. For the 18xx chip-family,
set Rx-checsum according to indication from FW.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Some chip families are capable of checksumming certain classes of Tx
packets in HW. Indicate this fact in the netdev features and perform the
HW checksum by protocol type for the 18xx family.

Fix the location of the skb network header when we move it so we can
rely on it when setting the checksum.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Add wl18xx-specific HW initialization operation and create acx.[ch]
files to support that.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Implement immediate Tx completion for the 18xx family. Move 18xx
specific Tx code to new tx.c/h files and create helper header files
for definitions.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Implement the 18xx-specific way for getting the length of a Rx packet.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Implement the HW op for getting alignment state in wl18xx. The FW aligns
the Rx Ethernet payload data.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

The 18xx FW sends Rx blocks with aligned length.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

The wl18xx chip passes extra information in the firmware status to the
driver.  Add a private data section to handle that.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Define HW-rate conversion tables for the 18xx chip. Initialize
the appropriate wlcore elements with these tables and values to allow
conversion of HW-rates.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Set the frame length during Tx in a way compatible with the 18xx FW.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Add the 18xx variant to the HW Tx descriptor union and set the 18xx
specific values during Tx.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Implement the calc_tx_blocks op for the 18xx family.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Initialize the Tx spare block counts for all operating modes in the 18xx
card.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Initialize the number of Tx-descriptors for the 18xx family.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Make use of the wlcore provided private storage in the 18xx low-level
driver.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Add the operations that allow wlcore to trigger commands to the
firmware and acknowledge when an event has been fully received.

Allocate a private buffer to hold the maximum sized cmd. Send the
entire length of the buffer each time a command is sent to signal
EOT. Remove the previous EOT mechanism.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Implement the boot operation.  Add a wl18xx-specific configuration
structure (namely to configure the mac and phy parameters).

The default hw configuration matches the DVP board.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Add identify_chip operation to detect the chip ID for wl185x and set
the correct firmware name.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Add the register table with the appropriate values for wl18xx.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Define and add the partition table in the wlcore struct.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

We don't have any chip-specific operations yet, but now wlcore has
defined an operations structure and requires the pointer to be set.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

At least in PG1, the wl18xx chips use the same SDIO vendor/device ID,
so it's not possible to figure out which driver is to be used.  As a
workaround, we can check the SDIO revision number, because wl18xx uses
3.00 and wl12xx does not.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

Add the wl18xx module and the probe functions.  Use wlcore for the
main parts (not functional at this point due to differences in the
wl18xx initialization).
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

commit c21eebb5
"wl12xx: add RX filters ACX commands" breaks the build
when CONFIG_PM isn't defined:

ERROR: "wl1271_rx_filter_get_fields_size"
[drivers/net/wireless/ti/wlcore/wlcore.ko] undefined!
ERROR: "wl1271_rx_filter_flatten_fields"
[drivers/net/wireless/ti/wlcore/wlcore.ko] undefined!

code in drivers/net/wireless/ti/wlcore/acx.c is using these
functions unconditionally while they are #ifdefed CONFIG_PM.
Fix it by ifdefing all relevant RX filters code with CONFIG_PM.
Reported-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NEyal Shapira <eyal@wizery.com>
Acked-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

On AR933x, the internal regulator settings need to be applied before the
PLL init to avoid stability issues.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

"> Can you provide more information about the issues with high power devices?
Tx being flakey and Rx not working at all."
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

ath_tx_setup_buffer() can fail if there is no ath_buf left, or if mapping DMA
failed. In this case it frees the skb passed to it.
If ath_tx_setup_buffer is called from ath_tx_form_aggr, the skb is still
linked into the tid buffer list and must be dequeued before being released.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Cc: stable@vger.kernel.org
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

It has been found that active Rx can interfere with stopping tx DMA, which
could result in at least parts of those "Failed to stop Tx DMA!" messages.
Stopping rx before tx should prevent that.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NFelix Fietkau <nbd@openwrt.org>

The firmware is more than 300KB big and you should not use kmalloc for
such big allocations. This allocation with kmalloc failed on my mips
based device (BCM47186).
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Acked-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>