wil6210: use NAPI_POLL_WEIGHT for napi budget

The comment next to WIL6210_NAPI_BUDGET says "arbitrary".
If we're picking arbitrary values let's pick the recommended
default which is NAPI_POLL_WEIGHT.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220429174643.196994-4-kuba@kernel.org

wil6210: use eth_hw_addr_set()

Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

Do the special encoding on the stack, then copy the address.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211018235021.1279697-6-kuba@kernel.org

wil6210: Add Support for Extended DMG MCS 12.1

FW reports Tx/Rx extended MCS 12.1 to driver as "26". Driver will
convert this into base MCS 7 + EXTENDED_SC_DMG flag so kernel can do
the correct phy rate conversion. Also add log prints to print "12.1"
instead of "26" for extended MCS.

Signed-off-by: Max Chen <mxchen@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1609977050-7089-3-git-send-email-mxchen@codeaurora.org

wil6210: add support for set_cqm_rssi_config

set_cqm_rssi_config() is used by the kernel to configure connection
quality monitor RSSI threshold.
wil6210 uses WMI_SET_LINK_MONITOR_CMDID to set the RSSI threshold to
FW which in turn reports RSSI threshold changes with
WMI_LINK_MONITOR_EVENTID.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support set_multicast_to_unicast cfg80211 operation

Wil6210 AP has a separate ring for transmitting multicast packets,
multicast packets are transmitted without an ack from the receiver side.
Therefore, 802.11 spec defines some low MCS rates for multicat packets.
However, there is no guarantee that these packets were really received
and handled on the client side.

Some applications that rely on multicast packets, may prefer to
transmit these packets as a unicast to ensure reliability, and also
to ensure better performance with high MCS rates.
multicast to unicast is done by duplicating multicast packets to all
clients and changing the DA (multicast) to the MAC address of the
client.
see NL80211_CMD_SET_MULTICAST_TO_UNICAST for more info.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add verification for cid upper bound

max_assoc_sta can receive values (from the user or from the FW)
that are higher than WIL6210_MAX_CID.
Verify that cid doesn't exceed the upper bound of WIL6210_MAX_CID.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add SPDX license identifiers

Change all files to add SPDX license identifiers and
remove license text.
This is only an administrative change, there is no change
in actual license or copyright for any file.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix PTK re-key race

Fix a race between cfg80211 add_key call and transmitting of 4/4 EAP
packet. In case the transmit is delayed until after the add key takes
place, message 4/4 will be encrypted with the new key, and the
receiver side (AP) will drop it due to MIC error.

Wil6210 will monitor and look for the transmitted packet 4/4 eap key.
In case add_key takes place before the transmission completed, then
wil6210 will let the FW store the key and wil6210 will notify the FW
to use the PTK key only after 4/4 eap packet transmission was
completed.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: Add EDMG channel support

Add support for Enhanced Directional Multi-Gigabit (EDMG) channels 9-11.
wil6210 reports it's EDMG capabilities (that are also based on FW
capability) to cfg80211 by filling
wiphy->bands[NL80211_BAND_60GHZ]->edmg_cap.
wil6210 handles edmg.channels and edmg.bw_config requested in connect
and start_ap operations.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix wil_cid_valid with negative cid values

There are several occasions where a negative cid value is passed
into wil_cid_valid and this is converted into a u8 causing the
range check of cid >= 0 to always succeed. Fix this by making
the cid argument an int to handle any -ve error value of cid.

An example of this behaviour is in wil_cfg80211_dump_station,
where cid is assigned -ENOENT if the call to wil_find_cid_by_idx
fails, and this -ve value is passed to wil_cid_valid. I believe
that the conversion of -ENOENT to the u8 value 254 which is
greater than wil->max_assoc_sta causes wil_find_cid_by_idx to
currently work fine, but I think is by luck and not the
intended behaviour.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: set WIL_WMI_CALL_GENERAL_TO_MS as wmi_call timeout

Replace all wmi_call timeouts that are less than 100 msec to use
WIL_WMI_CALL_GENERAL_TO_MS (100 msec) as a default. Some of the
current wmi_call timeouts are too short and fails to receive its
waiting events.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for reading multiple RFs temperature via debugfs

Base-band chips support multi RFs chips. Add support for reading
multiple RFs temperature via debugfs.

Signed-off-by: Tzahi Sabo <stzahi@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: clear FW and ucode log address

Clear the FW and ucode log address on device initialization to allow
user space app identify when the address was set by FW/ucode and it can
start read.

Signed-off-by: Tzahi Sabo <stzahi@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: Add support for setting RBUFCAP configuration

RBUFCAP support added in FW.
The RBUFCAP feature is amendment to the block ack mechanism to
prevent overloading of the recipient’s memory space, which may
happen in case the link speed is higher than STA’s capability
to process or consume incoming data.
The block ack policy (ba_policy) is now controlled by FW so driver
should ignore this field.
Add new debugfs "rbufcap" to configure RBUFCAP.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix overwriting max_assoc_sta module param

Save the parameter of max_assoc_sta per device.
On fw_ready event calculate the max_assoc_sta and save it per device,
do not overwrite the max_assoc_sta module param.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: enhancements for descriptor and status ring debugfs

Add printing of hwhead as part of desc ring and status ring debugfs.
Validate wil->rx_buff_mgmt and ring->ctx arrays before accessing them.
Dump Tx descriptor content even when it indicates invalid buff_id.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for multiple sections in brd file

Current board file loading procedure assumes that the board file
includes only one section.
New board files can include multiple sections.
Add the ability to read multiple addresses and max size from FW
file and load multiple sections from the board file into those
addresses.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: reset buff id in status message after completion

Since DR bit and buffer id are written in different dwords of
the status message, the DR bit can already be set to 1 while the
buffer id is not updated yet.
Resetting the buffer id in the status message will allow the driver
to identify such cases and re-read the status message until the buffer
id is written by HW.
In case DR bit is set but buffer id is zero, need to read the status
message again, until a valid id is identified.

In addition to that, move the completed buffer id to the tail of the
free list to prevent its immediate reuse in the upcoming refill.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for ucode tracing

The driver needs to expose RGF_USER_USAGE_2 register that contains
the offset of the ucode logging table.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: use OEM MAC address from OTP

In addition to existing MAC address field in OTP, new field added for
OEM MAC address.
wil6210 gives precedence to the new OEM MAC address and will use it if
its valid.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: check mid is valid

Check that the mid is valid and that it does not exceed the memory
size allocated to vifs array.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: update WIL_MCS_MAX to 15

Update max MCS to 15, which is supported by Talyn-MB.
This will allow collecting statistics on number of RX packets
in higher MCS.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: prevent device memory access while in reset or suspend

Accessing some of the memory of the device while the device is
resetting or suspending may cause unexpected error as the HW is still
not in a stable state. Prevent this access to guarantee successful
read/write memory operations.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: ignore HALP ICR if already handled

HALP ICR is set as long as the FW should stay awake.
To prevent its multiple handling the driver masks this IRQ bit.
However, if there is a different MISC ICR before the driver clears
this bit, there is a risk of race condition between HALP mask and
unmask. This race leads to HALP timeout, in case it is mistakenly
masked.
Add an atomic flag to indicate if HALP ICR should be handled.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support up to 20 stations in AP mode

New FW added support for upto 20 clients in AP mode. Change the driver
to support this as well. FW reports it's max supported associations in
WMI_READY_EVENT. Some WMI commands/events use cidxtid field which is
limited to 16 cids. Use new cid/tid fields instead.

For Rx packets cid from rx descriptor is limited to 3 bits (0..7),
to find the real cid, compare transmitter address with the stored
stations mac address in the driver sta array.

EDMA FW still supports 8 stations. Extending the support to 20
stations will come later.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add option to drop Tx packets when Tx ring is full

In AP mode with multiple clients, driver stops net queue
(netif_tx_stop_queue) upon first ring (serving specific client)
becoming full. This can have negative effect on transmission to
other clients which may still have room in their corresponding rings.

Implement new policy in which stop/wake net queue are not used. In
case there is no room in the ring for a transmitted packet, drop the
packet.

New policy can be helpful to debug performance issues, to guarantee
maximum utilization of net queues.
New policy is disabled by default and can be enabled by debugfs:
echo 1 > drop_if_ring_full

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix RGF_CAF_ICR address for Talyn-MB

RGF_CAF_ICR register location has changed in Talyn-MB.
Add RGF_CAF_ICR_TALYN_MB to support the new address.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: refactor disconnect flow

Separate sending command to the fw from the event handling function to
simplify the disconnect flow and track the from_event flag correctly.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add recovery for FW error while in AP mode

AP configuration is stored by the driver. Upon FW error, disconnect
notification is sent to user space for any associated stations. AP is
then internally restarted with the stored configuration.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: make sure Rx ring sizes are correlated

When enlarging rx_ring_order module param, wil6210 fails to load
because there are not enough Rx buffers.
Fix this by enlarging number of Rx buffers at startup, if needed based
on rx_ring_order.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: increase RX rings and RX buff array size

In Talyn-MB, the 11ad throughput is higher and performance drops
may occur in the current RX configuration due to unavailability
of Rx buffers.
Increase the RX descriptor ring, RX status ring and number of RX
buffers to stabilize the performance in high throughput.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix unsigned cid comparison with >= 0

The comparison of cid >= 0 is always true because cid is of type u8
(8 bits, unsigned).

Fix this by removing such comparison and updating the type of
variable cid to u8 in the caller function.

Addresses-Coverity-ID: 1473079 ("Unsigned compared against 0")
Fixes: b9010f105f21 ("wil6210: add FT roam support for AP and station")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add FT roam support for AP and station

This feature is needed for enterprise APs and clients to enable
fast roaming as defined in 802.11r between APs in the same ESS.

On AP side, this feature is supported only when disable_ap_sme
is enabled.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for channel 4

wil6210 supports channels 1-3 of the 60GHz band.
New FW added support for channel 4. Add support for channel 4 also in
wil6210 driver.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix eDMA RX chaining

HW requires Rx buffers to be 4 bytes aligned. Modify the driver to
meet this requirement.
Enable OFU rdy valid bug fix, to prevent hang in oful34_rx while
there is back-pressure from host during RX.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: off channel transmit management frames in AP mode

Currently wil6210 ignores the channel field in the
cfg80211_mgmt_tx_params struct for wil_cfg80211_ops mgmt_tx operation
and sends all management frames on the serving channel.

Add support for off-channel transmission of management frames
(WIPHY_FLAG_OFFCHAN_TX) in AP mode. This is useful in enterprise APs
for sending custom probe request frames.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support Talyn specific board file

FW file name for Talyn device can be different from the default name.
In such a case use a corresponding board file name.
If such a board file is not present FW download procedure will fail.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support max aggregation window size 64

FW can support BACK window size 64 for performance improvements.
A new FW capability is added for notifying the host on the increased
max BACK win size support.
Defining WIL_MAX_AGG_WSIZE_64 and WIL_MAX_AMPDU_SIZE_128 to be used
in this case.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for link statistics

Driver can request FW to report link statistics using
WMI_LINK_STATS_CMDID.
FW will report statistics with WMI_LINK_STATS_EVENTID.
Two categories of statistics defined: basic and global.

New "link_stats" debugfs is used for requesting basic statistics
report (write) and for reading the basic statistics (read).
"link_stats_global" debugfs is used for requesting and reading the
global statistics.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add 3-MSI support

Extend MSI support to 3-MSI in order to load balance the tx\rx
interrupts between different cores.
use_msi module parameter has changed to n_msi. Usage:
- Set n_msi to 0 for using INTx
- Set n_msi to 1 for using single MSI
- Set n_msi to 3 for using 3-MSI

In 3-MSI configuration MSI 0 is used for TX interrupts, MSI 1
is used for RX interrupts and MSI 2 is used for MISC interrupts.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support Talyn specific FW file

FW file name for Talyn device is different from the default name.
This patch searches for Talyn specific FW file name and fallback
to the default FW file in case it is not present.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix RX checksum report to network stack

Currently the driver sets CHECKSUM_UNNECESSARY only in case the HW
doesn't report checksum error.
As ip_summed value is not initialized it is not clear what
the driver will report to the network stack in case of HW checksum
error or in case HW doesn't calculate checksum.
Initialize ip_summed to CHECKSUM_NONE to guarantee checksum
calculation by the network stack in the above cases.

Signed-off-by: Gidon Studinski <gidons@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add TX latency statistics

Collect statistics of TX latency. The latency is measured from the time
the HW gets aware of new SKB to transmit until the HW indicates tx
complete for this SKB.
The statistics are shown via new "tx_latency" debugfs.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: drop Rx packets with L2 error indication from HW

Due to recent change in FW, driver will be notified of corrupted Rx
packets (e.g. MIC error).
Drop such packets before they are delivered to network stack.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: Rx multicast packets duplicate detection

Store the last received multicast sequence number (SN) part of the TID
info. Drop Rx multicast packets with retry bit set which their SN
is equal to the last received.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: remove crash dump collection from OTP section

In some cases where the device is stuck, reading from OTP
can timeout. As OTP section is known there is no need to read
it during device crash dump collection.
Adding a new field to struct fw_map to indicate if to include
this section in crash dump collection.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for Talyn-MB boot flow

Talyn-MB introduces various of FW download options:
FW download via PCIe, SPI or PBL for secured access.
The boot and FW download path is determined based on the
OTP HW register. Driver reads this register as part of the
SW reset flow and performs the appropriate initialization
sequence.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for enhanced DMA RX data flows

Enhanced DMA RX data path is handled using a single
RX descriptor ring for all VIFs.
Multiple RX status rings are supported, to allow RSS
and multi MSI support.
The driver gets the RX completions via the RX status rings.
The RX status message includes the completed RX buffer ID,
which points to the allocated SKB.

The enhanced DMA RX data flow supports RX chaining, where
multiple SKBs are merged into a single packet.

Enhanced DMA HW supports RX HW reorder offload, enabled by
default for Talyn-MB.

amsdu_en debugfs entry was added to allow control MSDU aggregation.
Use the following command to disable AMSDU (enabled by default):
echo 0 > amsdu_en

Signed-off-by: Gidon Studinski <gidons@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for enhanced DMA TX data flows

The enhanced DMA TX data path is handled using a descriptor
ring per connection and a single status ring.

The driver gets TX completions via the TX status ring. Each
status message points to the completed descriptor ring and
includes the number of completed descriptors in this ring.

Non TSO enhanced DMA TX descriptors are similar to legacy DMA
TX descriptors, hence the same transmit function can be used.

However, enhanced DMA TSO frames division is performed by the
HW, hence a new function is added to handle enhanced DMA TSO.

Signed-off-by: Gidon Studinski <gidons@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: initialize TX and RX enhanced DMA rings

Enhanced DMA design includes the following rings:
- Single RX descriptor ring is used for all VIFs
- Multiple RX status rings are supported, to allow RSS
- TX descriptor ring is allocated per connection
- A single TX status ring is used for all TX descriptor rings

This patch initializes and frees the above descriptor and
status rings.

The RX SKBs are handled by a new entity of RX buffers manager,
which handles RX buffers, each one points to an allocated SKB.
During Rx completion processing, the driver extracts a buffer
ID which is used as an index to the buffers array.
After the SKB is freed the buffer is moved from the 'active'
list to the 'free' list, indicating it can be used for another
descriptor. During Rx refill, SKBs are allocated and attached
to 'free' buffers. Those buffers are attached to new descriptors
and moved to the 'active' list.

New debugfs entries were added to allow edma configuration:

Run the following command to configure the number of status rings:
echo NUM_OF_STATUS_RINGS > num_rx_status_rings

Run the following command to use extended RX status message for
additional debug fields from HW:
echo 0 > compressed_rx_status

Run the following command to control the size of the TX status ring:
echo TX_STATUS_RING_ORDER > tx_status_ring_order
The status ring size will be 1 << tx_status_ring_order

Run the following command to control the size of the RX status ring:
echo RX_STATUS_RING_ORDER > rx_status_ring_order
Due to HW constrains RX sring order should be bigger than RX ring order
The status ring size will be 1 << rx_status_ring_order

Run the following command to change the number of RX buffer IDs:
echo RX_BUFF_ID_COUNT > rx_buff_id_count

Signed-off-by: Gidon Studinski <gidons@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for enhanced DMA structures

In enhanced DMA the vrings are handled internally by the FW
and are not exposed to the driver.
Instead, the driver handles descriptor rings, which are mapped
by the FW to vrings.
The completions of the TX and RX descriptors are notified to
the driver using status rings. Each status ring descriptor
includes information of the completed descriptors and the ring id
of their descriptor ring.

This patch changes struct vring to generic wil_ring to allow
its reuse for enhanced DMA descriptor rings and adds the descriptor
and status rings specific descriptors.

The vring debugfs entries have changed as follows:
- dbg_vring_index has changed to dbg_ring_index
- vrings has changed to rings
- vring_idle_trsh has changed to ring_idle_trsh
- vring_index has changed to ring_index

Signed-off-by: Gidon Studinski <gidons@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for Talyn-MB (Talyn ver 2.0) device

Add changes to support initialization of Talyn-MB wil6210
device:
- Add definition for Talyn-MB new JTAG id
- Define talyn_mb_fw_mapping array
- Add Talyn-MB reset sequence

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: remove unused rx_reorder members

Remove unused members from struct wil_tid_ampdu_rx

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: move WMI functionality out of wil_cfg80211_mgmt_tx

Rearrange the code by having new function wmi_mgmt_tx() to take care
of the WMI part of wil_cfg80211_mgmt_tx().

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: change reply_size arg to u16 in wmi_call

Change the type of the argument reply_size from u8 to
u16 in order to support reply sizes > 255 bytes.
The driver already supports u16 reply size in all
other places, this was the only missing change.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: multiple VIFs support for connections and data path

Track the connection status per-VIF.
The data path code is also updated to support multiple VIFs.
This includes RX and TX VRING management, NAPI poll loops,
RX reordering and related code.
Power management code used to check if the main interface
is up or based on connection state of the main interface,
adapt this code to take all VIFs into account.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: rename p2p_wdev_mutex to vif_mutex

As more support is added for multiple VIFs, there is a need
to protect the wil6210_vif structure from access while it is
deleted (mainly from del_virtual_intf operation).
Instead of adding another mutex, use p2p_wdev_mutex and rename
it to vif_mutex to reflect the added role. Its existing roles
are similar so it extends nicely (for example it protects the
scan_request member which is also a member of wil6210_vif).

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: multiple VIFs support for start/stop AP

Add support for multiple VIFs in the cfg80211 operations start_ap,
stop_ap and change_beacon. This change allows starting multiple APs
using virtual interfaces.
The data path and most other operations are still working only
on the main interface.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for adding and removing virtual interfaces

Add generic support in cfg80211 operations add_virtual_intf
and del_virtual_intf for adding/removing VIFs of any
interface type, and fix change_virtual_intf to allow changing
the interface type of a VIF. Previously these operations
only worked for the P2P_DEVICE interface which is not a real
VIF(it is management-only and shares radio with the main
interface).
Currently the interface combination is validated, the VIF is
added/removed in the firmware and the appropriate net/wireless
device is also added/removed.
Added minimal support for proper interface up/down and module
unload but most operations still work only on the main interface.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: infrastructure for multiple virtual interfaces

Simple infrastructure changes for supporting multiple
virtual interfaces (multiple VIFs).
It is still not possible to add new VIFs so the only VIF
belongs to the main interface.
Main changes:
1. Add MAC ID(mid) argument to wmi_send and wmi_call to
allow invoking WMI commands on different VIFs.
2. Similarly, in WMI event handler look at the mid reported
by FW and extract VIF structure (currently only for main
interface). All WMI event handlers operate on wil6210_vif
structure so they know on which VIF they were called.
3. Trivial changes to use wil6210_vif structure and MID
throughout the code.
4. Various changes to logging to report MID.

More complete multiple VIFs support will be added gradually
in next patches.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support concurrency record in FW file

New FW which supports multiple virtual interfaces, reports
its allowed interface combinations using a special comment
record in the FW file. The format of the interface combinations
is similar to the kernel wiphy->iface_combinations.
When parsing FW file during module initialization, also parse
and validate the concurrency record, and initialize
wiphy->n_iface_combinations and wiphy->iface_combinations
accordingly.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add wil6210_vif structure for per-VIF data

For supporting multiple virtual interfaces in the future,
introduce a wil6210_vif structure which will hold per-VIF
data. Change the module initialization so wil6210_vif will
be part of net_device structure, and wireless_dev will be
embedded inside the wil6210_vif structure. This will allow
us to find the appropriate wil6210_vif structure when we
only have access to wireless_dev or net_device.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support parsing brd file address from fw file

In order to allow using the same brd file across different
11ad chips, the address for loading the brd file should be
part of the FW file, instead of the brd file. The brd file is
expected to include only one section.
To allow backward compatibility the driver reads the
address from the brd file in case it is not included in the
FW file.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: enlarge FW mac_rgf_ext section for Sparrow D0

Sparrow D0 chips have slightly larger mac_rgf_ext section
in order to support extra features such as multiple virtual
interfaces.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix random failure to bring network interface up

Currently when we want to bring the interface up, we first
reset the device which causes the boot loader to run. Then
we halt the device CPU, load FW image and resume the device
CPU.
There are some boot loader versions which perform redundant
memory accesses even when idle. Halting the device CPU
while boot loader access memory can cause the device memory
controller to get stuck, the FW will fail to load and the
network interface will not come up.
For such boot loaders implement a workaround where we freeze
the boot loader before halting the device CPU, so it will not
perform any memory accesses.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: configure OTP HW vectors in SW reset flow

OTP HW vectors values are different for 40MHz and 330MHz AHB
clocks.
In SW reset flow, the host driver sets the clock frequency
to 40MHz. In order to allow reading from the OTP, the host
driver should configure the OTP HW vectors with the values
that fits this clock frequency.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support flashless device

Talyn device supports boot without flash.
Driver detects flashless device and in this case waits for ready indication
from HW machine (instead of bootloader ready indication). Also in this
case, MAC address is retrieved from OTP.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add support for Talyn AHB address map

Talyn memory has changed, areas were increased and shifted
to new locations.
Use the appropriate address map according to the device JTAG ID.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: recognize Talyn JTAG ID

Add Talyn JTAG ID to the list of valid IDs
and identify this device as Talyn.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: remove reference to preset_chandef

The field preset_chandef of wireless_dev must not be accessed
by the driver because it is private to cfg80211. Store the
monitor channel locally in wil6210_priv instead.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: remove leftover "FIXME"s

"FIXME: IRQ mask debug" and "FIXME: interrupts enabled - for debug"
can be removed because wil6210_debug_irq_mask() is now considered
production feature.

"FIXME FW can transmit only ucast frames to peer" and "FIXME real
ring_id instead of hard coded 0" can be removed because FW/HW already
support multicast transmission.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: prevent parallel suspend and dump collection

Suspend and crash dump operations can happen simultaneously
in case there is a FW assert during the suspend procedure
or when SSR calls all the devices crashdump callbacks.

To prevent that, a new flag is added, indicating that the
dumps collection is in progress, in order to allow the
suspend/reset decline if the dumps collection already started.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add platform capabilities bitmap

Add get_capa callback to platform ops to allow reading the platform
capabilities.
Supported capabilities:
- Keeping 11ad connection during suspend
- T_POWER_ON 0 support
- Usage of external clock

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support 40bit DMA addresses

Add the option to support 40bit addresses since some platforms
may not support 48bits but support 40bits

Signed-off-by: Lazar Alexei <qca_ailizaro@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support Scheduled scan

Add support for sched_scan_start/stop by sending PNO commands to FW.
Driver reports max_sched_scan_reqs and invokes
cfg80211_sched_scan_results upon receiving WMI_SCHED_SCAN_RESULT_EVENTID
from FW.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix build warnings without CONFIG_PM

The #ifdef checks are hard to get right, in this case some functions
should have been left inside a CONFIG_PM_SLEEP check as seen by this
message:

drivers/net/wireless/ath/wil6210/pcie_bus.c:489:12: error: 'wil6210_pm_resume' defined but not used [-Werror=unused-function]
drivers/net/wireless/ath/wil6210/pcie_bus.c:484:12: error: 'wil6210_pm_suspend' defined but not used [-Werror=unused-function]

Using an __maybe_unused is easier here, so I'm replacing all the
other #ifdef in this file as well for consistency.

Fixes: 94162666cd51 ("wil6210: run-time PM when interface down")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: update statistics for suspend

Currently the statistics show how many successful/failed
suspend/resume operations the system had.
Update the statistics by splitting each successful/failed
suspend/resume operations to radio on/off.

Signed-off-by: Lazar Alexei <qca_ailizaro@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: remove suspend time statistics

Currently suspend time statistics are showed through debugfs.
Remove time statistics in suspend state since the timing may
not be accurate in that state.

Signed-off-by: Lazar Alexei <qca_ailizaro@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fix PCIe bus mastering in case of interface down

In case of interface down, radio is turned off but PCIe mastering is
not cleared.
This can cause unexpected PCIe access to the shutdown device.
Fix this by clearing PCIe mastering also in case interface is down

Signed-off-by: Lazar Alexei <qca_ailizaro@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add block size checks during FW load

When loading FW from file add block size checks to ensure a
corrupted FW file will not cause the driver to write outside
the device memory.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: refresh FW capabilities during interface up

FW capabilities are currently retrieved only during module
initialization, but userspace can replace the firmware while
interface is down, so refresh the FW capabilities when
interface is up (after FW is loaded) to ensure driver
functionality matches the loaded FW.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: run-time PM when interface down

Allow run-time suspend when interface is down, keep card alive when
interface is up.
If driver is in wmi only or debug_fw mode run-time PM won't suspend.

Signed-off-by: Lazar Alexei <qca_ailizaro@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: clear PAL_UNIT_ICR part of device reset

When FW starts running it can get D0 to D3 interrupt that is a leftover
from previous system suspend while FW was not running.
As this interrupt is not relevant anymore, clear it part of device reset
procedure.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: make debugfs compilation optional

Since debugfs is a kernel configuration option, enable the driver to
compile without debugfs.

Signed-off-by: Gidon Studinski <qca_gidons@qca.qualcomm.com>
Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: move vring_idle_trsh definition to wil6210_priv

vring_idle_trsh is used in the operational driver, hence
should not be defined as a debugfs variable.

Signed-off-by: Gidon Studinski <qca_gidons@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: store FW RF calibration result

Store initial FW RF calibration result in driver. Set this calibration
result back to FW after each FW reset in order to avoid future calibration
procedures.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add statistics for suspend time

Add statistics for total, min and max suspend time, that
calculates the time the 11ad device was in suspend.
Those statistics will help to estimate the power impact
of d3hot feature.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: remove ioctl interface

Wireless drivers should not be using ioctl interface,
hence remove this interface for wil6210 driver.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add support for PCIe D3hot in system suspend

In order to preserve the connection in suspend/resume flow,
wil6210 host allows going to PCIe D3hot state in suspend,
instead of performing a full wil6210 device reset. This
requires the platform ability to initiate wakeup in case of
RX data. To check that, a new platform API is added.
In addition, add cfg80211 suspend/resume callbacks
implementation.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: support devices with different PCIe bar size

wil6210 devices can have different PCIe bar size, hence get the
bar size from PCIe device instead of using a constant bar size.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add option to load FTM FW

Module parameter allows to load specific FW used
for FTM testing.

Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: prevent access to 11AD device if resume fails

In case wil6210 resume fails, wil6210 suspend function will try
to access the suspended device in the next kernel suspend.
To prevent that, add wil_status_suspended flag to indicate if the
device is already suspended and clear it only if the resume succeeds.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: remove HALP voting in debugfs ioblob

debugfs ioblob function is called by the FW logs scripts
to copy the FW logs via PCIe.
As the FW logs collection is done in parallel to the operational
11AD actions, the HALP voting can take place during 11AD reset flow
and other sensitive scenarios.
To prevent that, remove HALP voting from the ioblob function.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: support 8KB RX buffers

The 11ad spec requires 11ad devices to be able to receive 8KB
packets over the air. Currently this is only possible by
loading the driver with mtu_max=7912 but this also forces
a smaller block ACK window size which reduces performance
for stations which transmit normal sized packets (<2KB).
Fix this problem as follows:
1. Add a module parameter rx_large_buf that when set,
will allocate 8KB RX buffers regardless of mtu_max
setting.
2. When receiving block ACK request agree to any window
size not above our maximum, regardless of the mtu_max setting.
This means if the other side transmits small packets (2KB)
it can still set up block ACK with a large window size,
and get better performance.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: restore power save state after internal FW reset

The power save profile is set to default state in case of FW reset,
regardless of the state before the reset took place.
Fix this by saving the current power save profile and restore it
in case of FW reset.

Signed-off-by: Lazar Alexei <qca_ailizaro@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add oob_mode for AP certification

Add a new value to the oob_mode module parameter for
supporting AP certification.
All enabled values of oob_mode (>0) are intended only
for debugging and diagnostics.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: correctly report locally generated disconnect in STA mode

Driver always invoke cfg80211_disconnected() with locally_generated as
false.
Fix this by reporting true whenever the disconnect is triggered from
upper layers (cfg80211) or from within the driver itself (reset,
deinit).

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: store bss object and use cfg80211_connect_bss()

In a fast disconnect/connect sequence, cfg80211_connect_result() can
fail to find the bss object which the driver is connecting to. Detailed
sequence of events:
* Driver is connected in STA mode
* Disconnect request arrives from user space. Driver disconnects and
calls cfg80211_disconnected() which adds new event to the
cfg80211_wq worker thread
* Connect request arrives from user space. cfg80211_connect() stores
ssid/ssid_len and calls rdev_connect()
* __cfg80211_disconnected() runs in worker thread and zero
wdev->ssid_len
* Connect succeeds. Driver calls cfg80211_connect_result() which fails
to find the bss because wdev->ssid_len is zero

To overcome this, upon connect request, store the bss object in the
driver and upon connect completion pass it to kernel using
cfg80211_connect_bss().

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: use print_hex_dump_debug instead of print_hex_dump_bytes

Some dynamic debug printouts in driver are using print_hex_dump_bytes.
However, with dynamic debug disabled, print_hex_dump_bytes outputs to
log unconditionally.
Use print_hex_dump_debug instead to prevent log pollution when dynamic
debug disabled.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: bus_request platform operation refinement

The driver uses the bus_request platform operation to
request resources from the platform for a specific bandwidth.
Currently the driver requests resources for the maximum
theoretical bandwidth, when interface is brought up.
Refine this process a bit: now the driver will request a
small amount of resources when interface is up, and will only
issue the maximum request when connected.
This mechanism will be improved further in the future to make
more refined requests based on actual bandwidth.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: set dma mask to reflect device capability

device supports 48bit addresses, reflect that by
setting the dma mask accordingly.

Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: option to override A-BFT length in start AP/PCP

Add an option to specify and override the A-BFT length when
starting an AP/PCP. See IEEE P802.11-2016, 10.38.5.
The abft_len must be set before starting AP/PCP. It is only
needed for diagnostics and certification.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: report association ID (AID) per station in debugfs

Add reporting of the association ID (AID) for each station
as part of the stations file in the debugfs.
Valid AID values are 1-254. 0 is reported if the AID
is unknown or not reported by firmware.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: support loading dedicated image for sparrow-plus devices

Driver may be used in platforms where some use sparrow cards while
other use sparrow-plus cards, where different FW image is needed.
Add the capability to load dedicated FW image in case sparrow-plus
card is detected and fallback to default image if such does not exist.

Signed-off-by: Lazar Alexei <qca_ailizaro@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add disable_ap_sme module parameter

By default, AP SME is handled by driver/FW.
In case disable_ap_sme is true, driver doesn't turn-on
WIPHY_FLAG_HAVE_AP_SME and the responsibility for
AP SME is passed to user space.

With AP SME disabled, driver reports assoc request frame
to user space which is then responsible for sending assoc
response frame and for sending NL80211_CMD_NEW_STATION.
Driver also reports disassoc frame to user space
which should then send NL80211_CMD_DEL_STATION.

NL80211_CMD_SET_STATION with NL80211_STA_FLAG_AUTHORIZED
is used by user space to allow/disallow data transmit.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add debugfs blobs for UCODE code and data

Added new areas to fw_mappings area for UCODE code
and data areas.
The new areas are only exposed through debugfs blobs,
and mainly needed to access UCODE logs.
The change does not affect crash dumps because the
newly added areas overlap with the "upper" area which
is already dumped.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: delay remain on channel when scan is active

Currently it was possible to call remain_on_channel(ROC)
while scan was active and this caused a crash in the FW.
In order to fix this problem and make the behavior
consistent with other drivers, queue the ROC in case
a scan is active and try it again when scan is done.
As part of the fix, clean up some locking issues and
return error if scan is called while ROC is active.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: support NL80211_ATTR_WIPHY_RETRY_SHORT

Add support for setting retry limit for short frames,
using NL80211_CMD_SET_WIPHY with the attribute
NL80211_ATTR_WIPHY_RETRY_SHORT.
Update wiphy->retry_short from the FW default when interface
is brought up.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add support for abort scan

Implement cfg80211 abort_scan op to allow the upper layer to
abort an ongoing scan request.
In addition, notify wil6210 device on scan abort request instead
of just ignoring the scan response.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add support for power save enable / disable

New power management wmi commands provide the ability to change
the device power save profile (enable / disable power save).

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fix net queue stop/wake

Driver calls to netif_tx_stop_all_queues/netif_tx_wake_all_queues are
inconsistent. In several cases, driver can get to a situation where net
queues are stopped forever and data cannot be sent.

The fix is to stop net queues if there is at least one vring which is
"full" and to wake net queues if all vrings are not "full".

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: extract firmware version from file header

Currently the FW version is taken from the sw_version field
of the FW ready event. This version is based on internal
version control revision and it is difficult to map to actual
FW version.
Fix this by using the actual FW version stored in the FW file
header record.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: extract firmware capabilities from FW file

When driver is loaded, extract a capabilities record
from the FW file. This record contains bits indicating
which optional features are supported by this FW.
The driver can use this information to determine
which functionality to support and/or expose to user
space.
The extraction is done before wiphy structure is
registered, because the capabilities can affect
information published by the this structure.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fix protection of wil->scan_request

Currently the places that check wil->scan_request and
call cfg80211_scan_done are not consistently protected,
so there is a risk that cfg80211_scan_done will be called
with NULL scan_request, causing a kernel crash.
Fix this by using p2p_wdev_mutex in few other places
that access scan_request. This makes sense since
scan_request may point to p2p_wdev, and it is not worth
the extra complexity of adding a new mutex.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fix stop p2p device handling

fix stop p2p device handling to identify between search
and listen and update the upper layers with the appropriate
notification.
The stop of p2p radio operations also needs to be performed
in __wil_down.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fix HALP handling in case of HALP vote time-out

In case HALP vote times out, we need to mask the HALP IRQ, as done
in case the interrupt is received, as this interrupt should be
set until completion of the low latency operation.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: abort P2P search when stopping P2P device

The nl80211 layer expects P2P search operation to be aborted
if needed when stopping P2P device. If the P2P search operation
is still running after returning from stop_p2p_device
it causes a WARN_ON and possibly a kernel crash.
Fix this by aborting the P2P search in wil_cfg80211_stop_p2p_device
and preventing P2P search from being started on a stopped P2P
device.
Note, the fix does not cover the case where a regular scan
is started on the P2P device. It will be completed in the
future when support is added for aborting a scan operation.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add pm_notify handling

Adding pm_notify to allow the following:
1. Check if suspend is allowed in an earlier stage to prevent
starting the suspend procedure in case it is not allowed
2. Notify the platform driver on the suspend request

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add support for device led configuration

Add the ability to configure the device led to be used for notifying
the AP activity (60G device supports leds 0-2).
The host can also configure the blinking frequency of the led in
three states.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: prevent deep sleep of 60G device in critical paths

In idle times 60G device can enter deep sleep and turn off
its XTAL clock.
Host access triggers the device power-up flow which will hold
the AHB during XTAL stabilization until device switches from
slow-clock to XTAL clock.
This behavior can stall the PCIe bus for some arbitrary period
of time.
In order to prevent this stall, host can vote for High Latency
Access Policy (HALP) before reading from PCIe bus.
This vote will wakeup the device from deep sleep and prevent
deep sleep until unvote is done.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: print debug message when transmitting while disconnected

Network stack can try to transmit data while AP / STA is
disconnected.
Change this print-out to debug level as this should not be
handled as error.
This patch also adds wil_dbg_ratelimited, used to limit the
above print-out.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: support regular scan on P2P_DEVICE interface

P2P search can only run on the social channel (channel 2).
When issuing a scan request on the P2P_DEVICE interface,
driver ignored the channels argument and always performed a P2P
search.
Fix this by checking the channels argument, if it is
not specified (meaning full scan) or if a non-social channel
was specified, perform a regular scan and not a P2P search.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add function name to wil log macros

Add __func__ to wil_err and wil_info for easier
debugging.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add oob_mode module parameter

Add module parameter oob_mode. Takes effect the next time
the interface is brought up and FW is loaded. Puts the FW
in special "out of the box" (OOB) mode which is used for
diagnostics and certification.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: pass is_go flag to firmware

When starting a PCP, pass the is_go flag to firmware in
wmi_pcp_start. This flag indicates whether we started
a PCP which is also a GO(P2P group owner) or just a regular
PCP.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fix no_fw_recovery mode with change_virtual_intf

When FW crashed with no_fw_recovery mode enabled, user space
could still call wil_cfg80211_change_iface quickly to change
interface type, and this would cause recovery to proceed and
FW crash logs may be lost.
Fix this problem by not resetting the FW in case no_fw_recovery
is enabled.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fix race conditions in p2p listen and search

Fix 2 race conditions found during test runs of P2P discovery:
1. Because wil_p2p_cancel_listen was not protected, user space
could start a new P2P listen/search before wmi_stop_discovery
completed. This caused a crash in the firmware.
2. In P2P listen, when listen timer expires and user space calls
cancel_remain_on_channel at the same time, code could send the
cfg80211_remain_on_channel_expired notification twice.

Added protections with wil->mutex to several places that call
wmi_stop_discovery.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: P2P_DEVICE virtual interface support

Added support for the P2P_DEVICE virtual interface. This interface
is intended for P2P management operations such as discovery and
GO negotiation. Normally it is implemented by drivers to allow
a separate interface for P2P management with its own MAC address,
but for 11ad drivers it is needed to support P2P search, since it
cannot otherwise be separated from normal scan.

Since we only support a single interface/MAC address, we can't
easily separate between primary and P2P_DEVICE interfaces.
For example when a management packet arrives we can't tell for
which interface it is intended. To work around this, we store
a pointer to the interface where the last "radio operation" was
triggered such as scan or remain on channel, and we forward
management packets and scan results to this interface.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: p2p initial support

supporting p2p_find, p2p_listen and p2p_connect
Use updated cfg80211_get_bss API (additional argument)

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: basic PBSS/PCP support

PBSS (Personal Basic Service Set) is a new BSS type for DMG
networks. It is similar to infrastructure BSS, having an AP-like
entity called PCP (PBSS Control Point), but it has few differences.
For example, stations inside a PBSS can communicate directly, and
the PCP role can be transferred between stations.

This change adds PBSS support, and has 2 main parts:
1. When starting an AP, add an option to start as a PCP instead.
This is implemented by a new PBSS flag which is passed as part of
the cfg80211_ap_settings structure.
2. When connecting to a BSS, add an option to connect to a PCP
instead of an AP. This is again implemented by a new PBSS flag,
added to the cfg80211_connect_params structure.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: switch to generated wmi.h

Switch to auto-generated version of wmi.h which is maintained
by FW team. This will allow better sync between teams in the
future and avoid bugs because of unexpected API changes.
The wmi.h will have many differences but most are cosmetic.
It also includes these real differences:
1. is_go parameter added to BCON_CTRL and START_PCP commands.
2. max_rx_pl_per_desc added to CFG_RX_CHAIN command.
3. various small API updates that are not currently used by
driver.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add support for discovery mode during scan

Add support for discovery mode during scan. When discovery mode
is active, station transmits special beacons while scanning.
This can optimize the scan mainly when there is only one AP/PCP
around.
Discovery mode is implicitly used by firmware during P2P search.
Since there is currently no use case where user space has a
reason to directly control discovery mode, we expose it only
through a debugfs flag.
Also fix name confusion in the wmi_scan_type enumeration.
The type previously called WMI_LONG_SCAN is actually
WMI_ACTIVE_SCAN.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: replay attack detection

Check PN for encrypted frames.
Maintain PN data for Rx keys, pairwise per TID and group.
Print PN's in the debugfs "stations" entry, like:

[0] 04:ce:14:0a:3c:3d connected
[ 0] ([32] 0 TU) 0x0fe [____________________________|___] total 252 drop 0 (dup 0 + old 0) last 0x000
[ 0] PN [0+]000000000000 [1-]000000000000 [2-]000000000000 [3-]000000000000
[GR] PN [0-]000000000000 [1+]000000000000 [2+]000000000000 [3-]000000000000
Rx invalid frame: non-data 0, short 0, large 0, replay 0
Rx/MCS: 0 110 65 65 65 0 12 0 0 0 0 0 0
[1] 00:00:00:00:00:00 unused
[2] 00:00:00:00:00:00 unused
[3] 00:00:00:00:00:00 unused
[4] 00:00:00:00:00:00 unused
[5] 00:00:00:00:00:00 unused
[6] 00:00:00:00:00:00 unused
[7] 00:00:00:00:00:00 unused

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: remove BACK RX and TX workers

WMI synchronous handling has changed and WMI calls that provide
a buffer for the reply are completed in the WMI interrupt context.
This allows sending the RX and TX BACK commands from the WMI event
handler without the need for the worker thread.
This is a better approach as it can decrease the handshake time
in the connect flow and prevent race conditions in case of fast
disconnects. An example for such a race is handling of wil_back_rx_handle
during a disconnect event, as wil_back_rx_handle is not protected by
the wil mutex and a disconnect can be handled after sta->status is
verified as connected.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: TX vring optimization

Tx vring needs to be enlarged to get better
performance for traffic over 2Gbps.

Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: wait for disconnect completion

cfg80211_ops.disconnect() should wait for disconnect flow to
complete. If it does not, internal state becomes out of sync with
one in cfg80211. If one does stress test connect/disconnect
sequence, cfg80211 will issue next connect before disconnect
completed internally.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: handle multiple connect/disconnect events

In the current solution wil6210 configures the vring in a worker
and holds only one pending CID. This implementation may lead to
race conditions between connect and disconnect events of multiple
stations or fast connect/disconnect events of the same station.

In order to allow the removal of the connect worker and handling of
WMI_VRING_CFG_DONE_EVENTID in the connect event, the WMI replies
that provide the reply in a given buffer needs to be handled
immediately in the WMI event interrupt thread.
To prevent deadlocks, WMI replies that requires additional
handling are still handled via the events list.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: support for platform specific crash recovery

Added a simple interface for platform to perform crash
recovery.
When firmware crashes, wil driver can notify the platform
which can trigger a crash recovery process. During
the process the platform can request a ram dump
from the wil driver as well as control when firmware
recovery will start. This interface allows the platform
to implement a more advanced crash recovery, for
example to reset dependent subsystems in proper order, or
to provide its own notifications during the recovery process.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fix device ready detection

Adjust driver behavior during FW boot. Proper sequence of
events after reset and FW download, is as following:

- FW prepares mailbox structure and reports IRQ "FW_READY"
- driver caches mailbox registers, marks mailbox readiness
- FW sends WMI_FW_READY event, ignore it
- FW sends WMI_READY event with some data
- driver stores relevant data marks FW is operational

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: Do no schedule firmware recovery during reset flow

During reset flow, ignore firmware errors detected prior
to the actual hardware reset as the recovery flow would
make additional unnecessary reset.

Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: dump firmware memory when firmware crashes

When firmware crashes, just before firmware recovery,
dump the firmware memory to a devcoredump device.
The resulting dump can be read from user space to be used
in offline crash analysis.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: log firmware crash information

Print firmware and ucode assert codes when firmware crashed.

Signed-off-by: Lior David <liord@qti.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: Add proper handling for invalid frames on Rx

On Rx, when invalid frame is received and dropped,
reaping of next frames from Rx ring is stopped.

This stops NAPI polling and re-enables the Rx interrupt.

However, in cases where no more frames received,
interrupt will not be triggered and rest of Rx frames
will not be processed.

Skip bad frames and continue to reap Rx packets when
such frames are encountered, and add statistics for
such frames for debug.

Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: system power management

Support for the system suspend/resume.
In preparation for the run-time PM, implementation made
run-time PM friendly: common for system and run-time PM
code factored out as generic functions, albeit is_runtime
parameter value is always false currently.

For debug purposes, "PM" debug category introduced.

Policy: AP-like interface can't be suspended; otherwise
suspend is allowed. Hardware brought down if interface
was up. Connection, if existed, get lost.
Interface will be brought up upon resume if it was up
before suspend.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: use inline functions for register access

Replace macros like "R", "W", "S", "C", defined multiple times,
with inline functions "wil_[rwsc]".

Use "readl" and "writel" instead of "ioread32" and "iowrite32"
since it is granted that memory transactions are used,
not port ones like IN/OUT

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: remove 3-MSI support

In the recent kernel versions, multiple MSI is not well supported.
In particular, it is not supported on x86 and ARM architectures.
Also, internal interrupt handling logic is simpler and
more effective when using single interrupt.

Remove support for 3 MSI, convert module parameter
"use_msi" from int with range [0,1,3] to boolean.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: detailed statistics for Rx reorder drop

Rx drops may be for 2 reasons: frame is old,
or it is duplicate. On the debugfs "stations" entry,
provide counters per reorder buffer for total
frames processed, drops for these 2 reasons.
Also add debug print for dropped frames.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: count drops in Rx block ack reorder

When performing Rx reordering, count skb's dropped
per reorder buffer; and print dropped packets count
on the "stations" debugfs entry

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: support boot loader struct v0 & v1

There are 2 versions of boot loader struct: v0 and v1.
In the v1, boot loader build version added; as well as
RF status.

Support both versions.

Boot loader structure v1 has RF status; ignore RF error if firmware
not going to be loaded; driver can still be used to interact with the HW

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: restart AP upon change in privacy settings

privacy settings might change while AP is running.
Inside wil_cfg80211_change_beacon(), detect change
in privacy settings and handle it by stopping and
re-starting the AP.
Firmware cannot handle on-the-fly privacy settings
change and so AP restart is required.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: reorder init sequence

Need to reorder init sequence to run wil_platform_init
before pci_enable_device. Assumption is platform init
may be required before device may be enabled.
Another issue, platform uninit should be called after
pci_disable_device because platform uninit may render
pci device non-accessible.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: Support hidden SSID

Pass hidden SSID information to FW for proper operation.
In order to be able to scan/connect to the hidden SSID, SSID
setting is added when scan is requested from FW. SSID
scanning currently supports single SSID due to FW limitation.

Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add per-MCS Rx stats

Provide detailed statistics for the Rx frames per MCS
Statistics printed in "stations" debugfs entry

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: add NIC memory region mac_rgf_ext

Firmware defines new memory region, mac_rgf_ext
that need to be accessed from the host for debug purposes.

Add corresponded mapping

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: broadcast for secure link

Introduce 2 types of GTK, Tx (for this STA) and Rx (for each peer).
Now, AP has only Tx GTK, STA - only Rx one. PBSS not supported yet;
for it, continue using pseudo-DMS.
Handle per-vring .1x state, update it from WMI_VRING_EN_EVENTID
event. This allows unification for unicast and broadcast vrings.
This mechanism replaces former per-CID "data_port_open"

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: Add pmc debug mechanism memory management

Pmc is a hardware debug mechanism which allows capturing phy data,
packets, and internally generated events and messages synchronized
and time stamped by the hardware. It requires memory buffers
allocated by the driver in order to be used by hardware dma to
upstream real time debug data to host memory.
Driver will handle memory allocation and release, and fetching
the data from the memory to application layer via debug file
system. The configuration of pmc is handled entirely by the
application layer.

Signed-off-by: Vladimir Shulman <qca_shulmanv@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: update FW file name

Firmware "board" file name has changed from wil6210.board
to wil6210.brd by the FW generation tools.

Reflect this in the driver.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: fw debug mode

refactor module parameter debug_fw to act as "fw debug mode",
where driver do nothing but allow card memory access.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: implement broadcast/multicast data

Use dedicated vring for multicast frames; this vring allocated for
AP and PBSS (both P2P GO and client) configurations

For short frames, use MCS0; for long - MCS1

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: Align Rx frames on 4*n+2 by having SNAP

For the networking code and for hardware network accelerators,
it is better to have IP header 4*n aligned. On the other side,
DMA on Rx path require buffer to be aligned on 4*n as well.
Having 14 bytes of Ethernet header, these 2 alignment
requests are in contradiction.

To solve this, order hardware offload block to not remove
SNAP header. This adds extra 6 bytes between addresses and
ethertype, making it 20 bytes total. This way, both buffer and
IP header are 4*n aligned. Remaining is only to remove SNAP
by shifting addresses 6 bytes. This involves data copying, so
this feature should be disabled unless required by the platform.

Module parameter "rx_align_2" (bool, default - false)
introduced to control this feature. Feature is completely disabled
when parameter is false.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: support AP isolation

For the AP, configuration may say not to bridge traffic between
wireless clients. This is conveyed from user space (ex: hostapd has
ap_isolate parameter) with NL80211_CMD_SET_BSS, to the driver's
cfg80211 ops method change_bss

Add support for this setting.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: rename 'secure_pcp' to 'privacy'

Make this field to track privacy attribute for all interface types

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: Change of threshold for tx vring idleness measurement

Change threshold to be variable debugfs entry from hard-coded 0.
Default threshold value is 16 descriptors because HW is capable
of fetching up to 16 descriptors at once.

Signed-off-by: Vladimir Shulman <qca_shulmanv@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: enable fix for HW bug in 802.11->803.3 transform

In the old hardware, bug existed that caused DA and SA for every
Rx packet to be swapped in the AP mode.
New hardware has fix for this bug. Enable this fix in the
hardware.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: remove support for old hardware

Hardware older than Sparrow B0 obsolete.
There is no WiFi product that uses this hardware.
Recent firmware does not support it either.

Remove driver support.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: boot loader

Introduce boot loader. Instead of the operational firmware,
very small boot loader is burned to the on-board flash. Boot loader
initializes hardware upon reset, and prepares for low power mode.
Boot loader reports MAC address and detects radio chip connected.

Driver loads firmware only when bringing up interface. All information
required to set up network interface, most important is MAC address,
reported by the boot loader

The firmware composed of 2 files:
- wil6210.fw - firmware itself (compiled code + data)
- wil6210.board - board file (various board and radio dependent
calibrations and parameters)

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix race between xmit and Tx vring de-allocation

Use spinlock, this should not impact Tx as lock is always free
except for de-allocation.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: implement cfg80211 probe_client() op

Access point require this API to check peer alive status.
Assume peer is alive when it is connected, because
firmware implements keep alive checks and will disconnect
peer if it is not alive.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: interrupt moderation configuration update

Due to HW limitation, inter-packet gap timeout max value is 13 usec.
Update of current thresholds from 15 to 13 usec.

Signed-off-by: Vladimir Shulman <qca_shulmanv@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: tuning rings size

Tuning rings size for performance optimization.
Increasing Tx ring size, allows buffering more packets for HW, thus
eliminating idle periods which were observed with smaller ring at
high throughput, because HW was fetching packets faster than driver was
filling them into the TX ring. Rx ring was similarly increased to
avoid same problems in Rx.

Signed-off-by: Vladimir Shulman <qca_shulmanv@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: Add Tx queue len configuration

Tx queue was hard-coded to 1000 in ether_setup. Add wil_dev_setup
function which configures tx queue len to chosen default value
after calling ether_setup.

Signed-off-by: Vladimir Shulman <qca_shulmanv@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix timing of netif_carrier_on indication

netif_carrier_on indication was too late. In case Rx packet received
before netif_carrier_on indication, upper layers could not send
Tx packet back.

The fix is to indicate netif_carrier_on earlier:
for STA, indicate netif_carrier_on when association starts.
for AP/PCP, indicate netif_carrier_on upon starting AP/PCP.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: RX high threshold interrupt configuration

Rx high threshold interrupt is reported by the hardware in case
when number of not utilized by the HW descriptors in the Rx ring
becomes low.
Introduce module parameter for RX high threshold.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: add advanced interrupt moderation

Add advanced interrupt moderation support available since "Sparrow B0".
Legacy interrupt moderation used only one counter to moderate tx, rx,
and misc interrupts.
Advanced interrupt moderation bypasses misc, and handles separately tx
and rx interrupts. In addition it has two timers for each interrupt type.
Max burst duration timer which defines how long to postpone interrupt after
first event (receive event for rx and tx complete event for tx), and
interframe timeout which defines how to determine the end of the burst and
issue interrupt even if the first timer still pending.
Capabilities flags in wil_priv is set on initialization according to
HW. The rest of the code checks for advanced interrupt capability bit
in capabilities flags field.
Debugfs is split accordingly: "legacy" interrupt moderation remains
unchanged, new debugs files added for advanced interrupt moderation
support.
Module params are aligned to support advanced interrupt moderation
(tx & rx). When not available (for legacy interrupt moderation) will
use only rx configuration; Tx configuration will be ignored in this
case.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: use HW capabilities mask in reset

Use the proper reset follow based on HW capabilities
detection instead of chip ID.
Remove old hw ID mechanism which was used only for reset flow.
Remove support for Marlon A0.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: detect HW capabilities

Read relevant information (HW ID for now) once on init
and set capabilities accordingly.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: use bitmap API for "status"

wil->status used as bitmap; use DECLARE_BITMAP for it.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: consider SNAP header in MTU calculations

When encapsulating 802.3 frames into the 802.11 ones,
8-byte SNAP header added to save ethtype. SNAP is part of
the frame body, thus should be counted in MSDU. So,
MTU = MSDU - SNAP

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: fix max. MPDU size

When configuring Tx/Rx VRING's, driver need to specify max. MPDU size
It should take into account all overhead introduced by 802.3->208.11
transformation.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: delba for responder

Implement delba flow for the responder (Rx) side

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: control AMSDU on Tx side of Block Ack

When establishing Block Ack as originator (Tx), control
AMSDU flag when sending ADDBA and update status upon
establishment flow completion. To be used in AMSDU flows

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: allow to configure ADDBA request

For manual ADDBA configuration, allow to set desired window size or
disable automatic mechanism.

Introduce module parameter (int) agg_wsize. It can be changed on run time,
will be taken into account on the next connect. Interpretation:
- <0 - disable automatic ADDBA; intended for manual testing through debugfs
- 0 - use automatically calculated window size
- >0 - use this for window size. Clipped by maximum supported by the hardware
with current environment.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: simple ADDBA on originator (Tx) side

Upon Tx vring creation, initiate BACK establishment
with maximum possible window size.

When establishing secure connection, there is EAPOL data exchange
between connection itself and "data port open", where security
is done and non-EAPOL data may be transferred. It is better to
send EAPOL frames using normal ACK because of firmware considerations.

send ADDBA only is 2 conditions met:
- data port open for the corresponded STA
- vring created

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: ADDBA/DELBA flows

Introduce BACK establishment procedures; decision logic is not implemented
yet; debugfs entry 'addba' used to manually trigger addba/delba for ringid 0.

debugfs usage:
to establish BACK with agg_wsize 16:
echo 16 > /sys/kernel/debug/ieee80211/phy0/wil6210/addba
to delete BACK:
echo 0 > /sys/kernel/debug/ieee80211/phy0/wil6210/addba
to change agg_wsize, one need to delete BACK and establish it anew

ADDBA flow for:

- originator

Tx side (initiator) sends WMI_VRING_BA_EN_CMDID providing
agg_wsize and timeout parameters.
Eventually, it gets event confirming BACK agreement - WMI_BA_STATUS_EVENTID
with negotiated parameters. On this event, update Tx vring data
(struct vring_tx_data) and display BACK parameters on debugfs

- recipient

Rx side (recipient) firmware informs driver about ADDBA with
WMI_RCP_ADDBA_REQ_EVENTID, driver process it in service work
queue wq_service. It adjusts parameters and sends response
with WMI_RCP_ADDBA_RESP_CMDID, and final confirmation provided
by firmware with WMI_ADDBA_RESP_SENT_EVENTID. In case of success,
driver updates Rx BACK reorder buffer.

policy for BACK parameters:
- aggregation size (agg_wsize * MPDUsize)) to not exceed 64Kbytes

DELBA flow for:

- originator

driver decides to terminate BACK, it sends WMI_VRING_BA_DIS_CMDID
and updates struct vring_tx_data associated with vring; ignore
WMI_DELBA_EVENTID.

- recipient

firmware informs driver with WMI_DELBA_EVENTID,
driver deletes correspondent reorder buffer

ADDBA request processing requires sending WMI command, therefore
it is processed in work queue context. Same work queue used as for
connect, it get renamed to wq_service

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

wil6210: configurable vring sizes

Allow to configure VRING size for both Rx and Tx via module parameters:
rx_ring_order and tx_ring_order. Parameters are ring size orders, i.e.
ring size calculated as 1 << order.
Defaults for both Tx and Rx are order 9, i.e. size 512

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: remove wil_to_pcie_dev()

There is no need to obtain physical device through
wil->pdev->dev path, as it is done by this macro.
The same device already stored as wiphy's device, thus
wil_to_dev() returns the same device as wil_to_pcie_dev()

Remove unnecessary macros, this allows to drop dependency
by pci.h in the firmware download code.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: add handling of RX HTRSH interrupt

RX_HTRSH interrupt is handled in exactly the same manner
as RX_DONE interrupt - fetching accumulated packets from RX
ring. In addition there's a rate limitted warning message.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: propagate disconnect reason

Propagate reason for the disconnect through the relevant call chains:
- report to cfg80211 reason as reported by the firmware
- provide to the firmware reason as requested by cfg80211

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Add support for large packets

It is possible to configure driver using mtu_max module parameter
by setting it to value in range of 68..7920 inclusive.
This is sub-optimal performance-wise in case packet is larger than 1 page.
mtu_max default value is 2228.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: prevent double disconnect command issuing

Disconnect flow may be invoked either from upper layer request,
or from event reported by the firmware.

In case of firmware event, driver need to release resources for the station but
not send another disconnect WMI command.

In case of upper layer request, WMI_DISCONNECT_STA_CMDID command need to
be issued for the firmware to perform disconnect on the MAC layer. Eventually,
event is expected to confirm MAC disconnect, but it is better to not wait for
firmware event and release station resources immediately. FW may fail to
report disconnect for various reasons, so one could not rely on event always reported.

Introduce parameter to distinguish 2 cases above to prevent double WMI command
issuing.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: reset flow updates

As communicated with the firmware & hardware teams

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: atomic I/O for the card memory

Introduce netdev IOCTLs, to be used by the debug tools.

Allows to read/write single dword value or
memory block, aligned to dword
Different address modes supported:
- BAR offset
- Firmware "linker" address
- target's AHB bus

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: manual FW error recovery mode

Introduce manual FW recovery mode. It is activated if module parameter
@no_fw_recovery set to true. May be changed at runtime.

Recovery information provided by new "recovery" debugfs file. It prints:

mode = [auto|manual]
state = [idle|pending|running]

In manual mode, after FW error, recovery won't start automatically. Instead,
after notification to user space, recovery waits in "pending" state, as indicated by the
"recovery" debugfs file. User space tools may perform data collection and allow to
continue recovery by writing "run" to the "recovery" debugfs file.
Alternatively, recovery pending may be canceled by stopping network interface
i.e. 'ifconfig wlan0 down'

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath: change logging functions to return void

The return values are not used by callers of these functions
so change the functions to return void.

Other miscellanea:

o add __printf verification to wil6210 logging functions
No format/argument mismatches found

Acked-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

wil6210: ethtool ops

Provide ethtool support; with support for interrupt coalescing through
get_coalesce/set_coalesce.
Placeholders for begin/complete will be used by runtime PM
to make sure target is powered up while performing ethtool operations

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

fixup! wil6210: fix usage of print_hex_dump_debug

Use empty inline functions instead of empty #define. Fix for "unused variable"
as reported below:

tree: git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next.git master
head: 167bf96dd87d2a8360cb9e9783006876dac4f579
commit: 871d8c4bbb0f23c29a21b63b1801071766f69b51 [45/62] wil6210: fix usage of print_hex_dump_debug
config: i386-allyesconfig
reproduce:
git checkout 871d8c4bbb0f23c29a21b63b1801071766f69b51
make ARCH=i386 allyesconfig
make ARCH=i386

All warnings:

drivers/net/wireless/ath/wil6210/wmi.c: In function 'wmi_evt_rx_mgmt':

>> drivers/net/wireless/ath/wil6210/wmi.c:341:10: warning: unused variable 'ie_len' [-Wunused-variable]
size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
^

>> drivers/net/wireless/ath/wil6210/wmi.c:340:13: warning: unused variable 'ie_buf' [-Wunused-variable]
const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
^

vim +/ie_len +341 drivers/net/wireless/ath/wil6210/wmi.c

2be7d22f Vladimir Kondratiev 2012-12-20 334
2be7d22f Vladimir Kondratiev 2012-12-20 335 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
2be7d22f Vladimir Kondratiev 2012-12-20 336 struct cfg80211_bss *bss;
8eea944a Vladimir Kondratiev 2014-06-16 337 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
8eea944a Vladimir Kondratiev 2014-06-16 338 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
8eea944a Vladimir Kondratiev 2014-06-16 339 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
8eea944a Vladimir Kondratiev 2014-06-16 340 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
8eea944a Vladimir Kondratiev 2014-06-16 341 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
8eea944a Vladimir Kondratiev 2014-06-16 342 u.beacon.variable);
8eea944a Vladimir Kondratiev 2014-06-16 343 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
8eea944a Vladimir Kondratiev 2014-06-16 344 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);

:::::: The code at line 341 was first introduced by commit
:::::: 8eea944af0efcdba09dac1ad220c9bfa68293279 wil6210: print more info about BSS found

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix for oops while stopping interface

When interface stopped while running intensive Rx traffic, the following oops
observed:

[89846.734683] Call trace:
[89846.737117] [<ffffffc00083aa64>] dev_gro_receive+0xac/0x358
[89846.742674] [<ffffffc00083ae94>] napi_gro_receive+0x24/0xa4
[89846.748251] [<ffffffbffc1c2f88>] $x+0xec/0x1f8 [wil6210] wil_netif_rx_any
[89846.753547] [<ffffffbffc1c4830>] $x+0x34/0x54 [wil6210] wil_release_reorder_frame
[89846.758755] [<ffffffbffc1c48ac>] wil_release_reorder_frames+0x5c/0x78 [wil6210]
[89846.766044] [<ffffffbffc1c4bf8>] wil_tid_ampdu_rx_free+0x20/0x48 [wil6210]
[89846.772901] [<ffffffbffc1bedc8>] $x+0x190/0x1e8 [wil6210]
[89846.778285] [<ffffffbffc1c0ed4>] wmi_event_worker+0x230/0x2f8 [wil6210]
[89846.784865] [<ffffffc0000b0bc8>] process_one_work+0x278/0x3fc
[89846.790591] [<ffffffc0000b1218>] worker_thread+0x200/0x330
[89846.796060] [<ffffffc0000b6664>] kthread+0xac/0xb8
[89846.800836] Code: b940c661 f9406a62 8b010041 f9400026 (f8636882)
[89846.807008] ---[ end trace d6fdc17cd27d18f6 ]---

Reason is the following: when removing Rx vring
(wil_netdev_ops.ndo_stop -> wil_stop -> wil_down -> __wil_down -> wil_rx_fini),
Rx interrupt occurs. It trigger Rx NAPI, calling wil_rx_handle() that reaps
(already cleaned) buffer, causing skb referring to garbage memory being set into reorder buffer.
Then, network stack trying to access this buffer and fails.

Prevent Rx NAPI from being scheduled if device going to stop. Bit wil_status_napi_en reflects
NAPI enablement state, check it when triggering Rx NAPI.

Testing shows that check for wil_status_napi_en sometimes gets negative, and new error message
get printed - in this case kernel oops would be observed. Original oops is no more reproducible.

This change requires also changes in the AP flows.
Properly enable/disable NAPI for the AP. Make sure Rx VRING is disabled
when resetting target.

For this, promote __wil_up() and __wil_down() to the module scope, and use it
in the relevant flows.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: rename [en|dis]able irq to [un]mask

To better reflect real action performed, rename:
s/wil6210_disable_irq/wil_mask_irq/
s/wil6210_enable_irq/wil_unmask_irq/

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: introduce separate completion for WMI

re-use of wmi_ready for both FW ready event and for wmi_call was causing
false "FW not ready" indication in case wmi_call() was invoked while reset
took place.
add wmi_call completion variable instead of re-using wmi_ready.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix race condition between BACK event and Rx data

While handling Rx packet, BACK event arrives and frees tid_ampdu_rx array.
This causes kernel panic while accessing already freed spinlock

The fix is to remove tid_ampdu_rx[]'s spinlock and instead use single
sta's spinlock to guard the whole tid_ampdu_rx array.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix usage of print_hex_dump_debug

When CONFIG_DYNAMIC_DEBUG is not defined, print_hex_dump_debug
is mapped directly to print_hex_dump which might cause
printout to exist all the time

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: platform specific module

New module (wil_platform) for handling platform specific tasks

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: coding style fixes

- parentheses, indentation, typos
- seq_puts() instead of seq_printf() with single argument
- sizeof(var) vs. sizeof(type)

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: firmware download

Firmware download implemented but is still experimental feature;
flag controlling it added, no_fw_load. It is true by default,
use no_fw_load=N to activate feature.

Reset flows also got some adjustment for the fw download to work

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix beamforming data reporting

When reading 'bf' file on debugfs, query beam forming status from firmware.
Ignore CID's that return error or return all zeros.

Remove obsolete code that used to maintain statistics on per-device basis,
as now it is reported be per-CID and current.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: update copyright year 2014

Fix Copyright headers in all files changed in 2014, to mention 2014

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: map MAC timer for packet lifetime into debugfs

expose reading RGF_MAC_MTRL_COUNTER_0 in debugfs

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: add new register region for AGC table

New register area defined in the firmware

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: map RGF_USER_USAGE_1 on the debugfs

Firmware sets this register with the offset of the firmware trace area
within the peripheral memory region. Critical for the firmware trace
to work

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: use same mapping table for FW addr translation and debugfs

Use single data source for all information regarding the firmware
memory map. With this change "ucode_xxx" regions disappears since
they are in fact part of larger "upper area" region

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: support for "sparrow" hardware

New hardware release appears; it require some changes to properly support it.
Introduce struct wil_board and "board" attribute in wil6210_priv;
keep hardware variant information in this structure.
fill it on probe(). Used in the reset flow.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: interrupt statistics

Track number of interrupts and Tx/Rx packets;
expose through debugfs 'info'. Reset upon read.
Used to analyse effectivness of interrupt coalescing and NAPI.
Read twice with some interval like
cat info > /dev/null; sleep 1; cat info

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: add 'freq' and 'link' debugfs entries

Expose operational frequency and link info

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: BACK: track last dropped SSN

Track and print on debugfs

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Tx performance monitoring

For performance monitoring, trace time intervals when Tx vring
is idle/not idle. Use CPU cycle counter for this, because jiffies is
too rough, and other precise time measurement methods involve
overhead while get_cycles() should be fast.
This used to provide some estimation for percentage when Tx vring
was idle, i.e. when hardware is under-utilized.
Estimation is not precise because of many reasons - CPU frequency scaling,
grt_cycles() may be per core etc. But still, it is good estimation

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Tx mgmt frame from debugfs

Provide 2 files on the debugfs:
- "rxon": write channel (1..4) to open Rx on it, 0 to rxoff
- "tx_mgmt": write binary frame, starting from MAC header

one need to care about turning receiver on/off before/after tx_mgmt

Correct sequence is:
echo $channel > rxon
cat mfmt_frame > tx_mgmt
echo 0 > rxon

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: detect scan timeouts

If scan has not finished in some reasonable time (10sec), interpret it as
if firmware error occurs but was not reported. Firmware should report
scan completion for every scan request, so it is error condition indeed.
Perform firmware recovery procedure.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: limit fw error recovery attempts

In case there is something fundamentally wrong with the firmware
(example: RF cable disconnected), FW will always crash immediately
after reset. This leads to infinite fw error recovery loop.

Count consecutive unsuccessful error recovery attempts in a short period
of time, and stop doing recovery after some reasonable count.
It is still possible to manually reset fw doing
interface down/up sequence.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: constify MAC addresses in cfg80211 ops

This propagates through all the drivers and mac80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

wil6210: Use larger Tx rings

When using scatter-gather, more descriptor entries get used.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: relaxed check for BACK start sequence

Sometimes, due to the race between Rx path and WMI_BA_STATUS_EVENTID WMI event,
few frames may be passed to the stack before reorder buffer allocated.
Then, after BACK establishment, it start getting frames with sequence number ahead of
SSN, and it get interpreted as missing frames. Then, BACK mechanism will wait
for missing frames; data traffic will be stopped. In case of interface configured
for DHCP, this data delay causes DHCP failure.

Relax checking for sequence number; use sequence of 1-st frame handled by the buffer
as SSN for this buffer.

This is work-around, real fix should be done when proper BACK mechanism implemented.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix race between disconnect and Tx NAPI

When disconnecting some CID, corresponded Tx vring get released. During vring
release, all descriptors get freed. It is possible that Tx NAPI working on the same
vring simultaneously. If it happens, descriptor may be double freed.

To protect from the race above, make sure NAPI won't process the same vring.
Introduce 'enabled' flag in the struct vring_tx_data. Proceed with Tx NAPI only if
'enabled' flag set. Prior to Tx vring release, clear this flag and make sure NAPI
get synchronized.

NAPI enablement status protected by wil->mutex, add protection where it was
missing and check for it.

During reset, disconnect all peers first, then proceed with the Rx vring. It allows for
the disconnect flow to observe proper 'wil->status' and correctly notify cfg80211 about
connection status change

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: target reset flow update

Use 'real' indication for hardware state.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fw error recovery

upon fw error interrupt - in STA mode, disconnect/cancel scan and
then reset FW/HW
added module param - no_fw_recovery which is false by default

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Fix kernel oops in reset flow

wil_reset() removes vring's
At the same time NAPI may be active performing Rx/Tx completion.
If this happens, Rx/Tx polling functions going to access already removed vrings

Make sure NAPI is idle and won't be started prior to vring removal.
For this, track NAPI enabled state

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: reset on power good

Configure hardware to perform full reset on "power good". This mean,
reset HW on system boot. This improves card stability.
By default this is off.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: sort HW registers definitions

Put all registers in order for easier navigation;
fix naming to reflect hardware cluster

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix for HW bug in interrupt setup logic

Hardware bug triggered by the MSI init while INTx asserted for some reason.
De-assert INTx prior to MSI set-up

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: update target reset to support new HW

Support for new chip revision. Revision read from the
internal register, PCIE config's "revision id" register
do not indicate HW version properly

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: generalize tx desc mapping

Introduce enum to describe mapping type; allow 'none' in addition to
'single' and 'page'; this is preparation for GSO

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: add scatter-gather support

When setting fragmented skb for Tx, assign skb to the last descriptor
and set number of fragments in the 1-st one
On Tx complete, HW sets "DU" bit in Tx descriptor only for the last
descriptor; so search for it using number of fragments field.
Middle descriptors may have "DU" bit not set by the hardware.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Block data till "data port open" reported

When connection established, as reported by WMI_CONNECT_EVENTID,
4-way handshaking required for the secure connection is not done
yet. It is indicated by another WMI event. Wait for it and only then
allow data traffic. In case of non-secure connection, FW reports
"data port open" immediately after connection.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Helpers to deal with 'cidxtid' fields

Encode/decode helpers

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: single station disconnect

implement del_station() method in the struct cfg80211_ops
It allows to disconnect single peer from the AP

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: per-connection statistics

Calculate statistics per connection, report with "iw station dump"

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Block ACK

When running multiple connections, hardware can't do BACK reordering
and it should be done on the host.

Model after mac80211's implementation. Drop RCU for now;
to be re-added when BACK will be stabilized

BACK handshaking is not implemented yet in the hardware,
pretend it was done to support the way FW operating

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: multiple connect - initial support

Enable multiple (up to 8 - HW/FW limitation) simultaneous connections.
Each connection has its own CID (connection ID) that describes chip's
beam-forming entity. Tx Vring should refer to correct CID for frame to reach
its destination.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Tx management frame

Implement management frame passing. In order to receive frame on the other
side, remain_on_channel() should be implemented as well

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: interrupt moderation

Use hardware capabilities to limit IRQ generation to about 15 per msec
It corresponds to about 7 packets/IRQ when running iperf with default
parameters at 1.3Gbps

Do not enable this feature in the sniffer (monitor) mode, because
interrupt moderation cause timestamp accuracy deterioration.
For the sniffer flow, it is important to get precise timestamp.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Introduce struct for sw context

Enable adding more data to the SW context.
For now, add flag "mapped_as_page", to separate decisions on free-ing skb
and type of DMA mapping.
This allows linking skb itself to any descriptor of fragmented skb.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Align WMI header with latest FW

FW guys changed header structure; align driver code

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Send EAPOL frames using normal Tx queue

No more need for special processing of EAPOL, FW can now send EAPOL frames
using normal Tx queue for TID 0

This fixes "schedule while atomic" bug - start_xmit called in softirq context;
while WMI mechanism that was used may sleep.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Don't use wdev->sme_state

sme_state is private wdev's variable.
Track connection state internally

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: use NAPI

Introduce NAPI for Rx and Tx completion.

This fixes packet reordering that happens when Rx handled right in
the IRQ: netif_rx puts packet in 'percpu' queue, then network stack
fetches packets from 'percpu' queues for processing, with different
pattern of queue switching. As result, network stack see packets
in different order. This causes hard to understand TCP throughput
degradation in about 30min

Complete polling if only one packet was processed - this eliminates
empty polls that would be otherwise done at the end of each burst

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: trace support

Trace the following:
- WMI cmd/event
- log events
- interrupts
- Tx/Rx

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: temperature measurement

Firmware got support for temperature measurement.
There are 2 temperature sensors: MAC and radio

"not available" temperature - reported by FW as 0 or ~0

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: sync with new firmware

Adjust driver for changes in the FW API.
Noticeable changes in the FW are:
- temperature sensing
- infrastructure for multiple connections
- infrastructure for P2P
- signal strength indication

This commit introduces only changes that are required to support same functionality
as previous firmware, no new features.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: new SW reset

New firmware allows for shorter SW reset procedure.
After SW reset, FW raises "fw done" IRQ, at this
moment mailbox control structures are initialized, driver caches it.

New status bit wil_status_reset_done introduced to track completion
of the reset. It is set by "fw ready" irq, and required for WMI rx flow
to access control structures.

WMI Tx flow protected by other status bit, wil_status_fwready. It can't
be set before wil_status_reset_done is set by design.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: refactor connect_worker

Move wmi_connect_worker() to the main.c and change names for consistency.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Remove local implementation of dynamic hexdump

This functionality now integrated in kernel, local hack not needed any more

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Never delete Rx chain with firmware

Firmware crash on attempt to delete Rx chain.
Driver part of Rx chain removed only in preparation for the target reset;
as reset is the only flow that removes Rx chain in the firmware.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix checkpatch CamelCase warnings

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Fix: Tx stall

Due to multi-tx-queue design, wil_start_xmit() used to be executed
concurrently for different queues. Then, these transmits delivered
to the same queue, creating race.

As result, Tx descriptor may be skipped, causing stall in hardware.

Convert to single Tx queue fixes it.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Refactor rx init/fini

Move WMI related operations to wmi.c as helper functions

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: remove raw wil_dbg() calls

Introduce debug category "MISC", convert all raw wil_dbg() to this category.
This improves dynamic debug manageability

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Detect FW error

In the firmware, added is ability to report internal errors using IRQ.

Catch this IRQ and notify user space via netlink

User space get notified like (udevadm monitor --kernel --property):

KERNEL[12660.320520] change /devices/pci0000:00/0000:00:1c.1/0000:02:00.0/0000:03:01.0/0000:05:00.0/net/wlan12 (net)
ACTION=change
DEVPATH=/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/0000:03:01.0/0000:05:00.0/net/wlan12
DEVTYPE=wlan
EVENT=FW_ERROR
IFINDEX=6
INTERFACE=wlan12
SEQNUM=2489
SOURCE=wil6210
SUBSYSTEM=net

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: add new wil6210 802.11ad 60GHz driver

This adds support for the 60 GHz 802.11ad Wilocity card
through a new driver, wil6210. Wilocity implemented the
firmware, QCA maintains the device driver.

Currently supported:

- STA: with security
- AP: limited to 1 connected STA, security disabled
- Monitor: due to a hardware/firmware limitation
either control or non-control frames are monitored

Using a STA and AP with this drive, one can assemble
a fully functional BSS. Throughput of 1.2Gbps is achieved
with iperf.

The wil6210 cards have on-board flash memory for the
firmware, the cards comes pre-flashed and no firmware
download is required.

For more details see:

http://wireless.kernel.org/en/users/Drivers/wil6210

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>