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  1. 09 9月, 2015 2 次提交
    • V
      ath10k: drop probe responses when too many are queued · 7b7da0a0
      由 Vivek Natarajan 提交于 
      In a noisy environment, when multiple interfaces are created,
the management tx descriptors are fully occupied by the probe
responses from all the interfaces. This prevents a new station
from a successful association.

Fix this by limiting the probe responses when the specified
threshold limit is reached.
Signed-off-by: NVivek Natarajan <nataraja@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      7b7da0a0
    • V
      ath10k: fix DMA alloc failure for target requested memory chunks · a925a376
      由 Vasanthakumar Thiagarajan 提交于 
      During long hours of stress testing like AP interface up/down along
with continuous ping flood from a station doing connect/disconnect,
it is observed that the system is not able to allocate DMA consistent
memory of size > 512KB chunks as requested by firmware in WMI_SERVICE_EVENTID.
With the system memory getting fragmented during the run based on the
size of the memory requested, the failure to return physically continguous
memory of high order can happen. Once the system gets to this situation,
bringing up the wifi interface will fail and a system reboot may be needed
to make it work again. This problem is obseved with QCA99X0.

To fix this issue, allocate the DMA memory requested by firmware during
device probe time and keep it during the life time of the device. WMI service
ready event handler is changed to allocate the memory chunks if it is
not already allocated or if the memory allocated for the previous ready
event is not same as the current requested ones. After this patch the
memory usage when wifi is inactive will be inceased by few 100KB to
3MB based on the target type.

Failure happens with the following stack trace

[29557.488773] kworker/u4:1: page allocation failure: order:8, mode:0xd0
[29557.494297] CPU: 0 PID: 8402 Comm: kworker/u4:1 Not tainted 3.14.43 #7
[29557.500793] Workqueue: ath10k_aux_wq ath10k_wmi_event_service_ready_work [ath10k_core]
[29557.508602] [<c021e9b0>] (unwind_backtrace) from [<c021ba90>] (show_stack+0x10/0x14)
[29557.516580] [<c021ba90>] (show_stack) from [<c03bdddc>] (dump_stack+0x88/0xcc)
[29557.523612] [<c03bdddc>] (dump_stack) from [<c0290e34>] (warn_alloc_failed+0xdc/0x108)
[29557.531515] [<c0290e34>] (warn_alloc_failed) from [<c0292d88>] (__alloc_pages_nodemask+0x4f0/0x654)
[29557.540485] [<c0292d88>] (__alloc_pages_nodemask) from [<c0222b48>] (__dma_alloc_buffer.isra.20+0x2c/0x104)
[29557.550260] [<c0222b48>] (__dma_alloc_buffer.isra.20) from [<c0222c34>] (__alloc_remap_buffer.isra.23+0x14/0xb8)
[29557.560413] [<c0222c34>] (__alloc_remap_buffer.isra.23) from [<c022305c>] (__dma_alloc+0x224/0x2b8)
[29557.569490] [<c022305c>] (__dma_alloc) from [<c0223208>] (arm_dma_alloc+0x84/0x90)
[29557.577010] [<c0223208>] (arm_dma_alloc) from [<bf5159d0>] (ath10k_wmi_event_service_ready_work+0x2f8/0x420 [ath10k_core])
[29557.588055] [<bf5159d0>] (ath10k_wmi_event_service_ready_work [ath10k_core]) from [<c024260c>] (process_one_work+0x20c/0x328)
[29557.599305] [<c024260c>] (process_one_work) from [<c02432d0>] (worker_thread+0x228/0x360)
[29557.607470] [<c02432d0>] (worker_thread) from [<c0247f88>] (kthread+0xd8/0xec)
[29557.614750] [<c0247f88>] (kthread) from [<c0208d18>] (ret_from_fork+0x14/0x3c)
[29557.712751] Normal: 696*4kB (UEMR) 512*8kB (UEMR) 367*16kB (UEMR) 404*32kB (UEMR) 455*64kB (UEMR) 424*128kB (UEMR) 379*256kB (UMR) 327*512kB (UMR) 1*1024kB (R) 0*2048kB 0*4096kB = 374544kB
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      a925a376
  3. 26 8月, 2015 1 次提交
    • M
      ath10k: add qca6164 support · 36582e5d
      由 Michal Kazior 提交于 
      This adds additional 0x0041 PCI Device ID
definition to ath10k for QCA6164 which is a 1
spatial stream sibling of the QCA6174 (which is 2
spatial stream chip).

The QCA6164 needs a dedicated board.bin file which
is different than the one used for QCA6174. If the
board.bin is wrong the device will crash early
while trying to boot firmware. The register dump
will look like this:

 ath10k_pci 0000:02:00.0: firmware register dump:
 ath10k_pci 0000:02:00.0: [00]: 0x05010000 0x000015B3 0x000A012D 0x00955B31
 ...

Note the value 0x000A012D.

Special credit goes to Alan Liu
<alanliu@qca.qualcomm.com> for providing support
help which enabled me to come up with this patch.
Signed-off-by: NMichal Kazior <michal.kazior@tieto.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      36582e5d
  5. 19 8月, 2015 1 次提交
  7. 17 8月, 2015 1 次提交
  9. 30 7月, 2015 1 次提交
    • R
      ath10k: fix memory alloc failure in qca99x0 during wmi svc rdy event · c8ecfc1c
      由 Raja Mani 提交于 
      Host memory required for firmware is allocated while handling
wmi service ready event. Right now, wmi service ready is handled
in tasklet context and it calls dma_alloc_coherent() with atomic
flag (GFP_ATOMIC) to allocate memory in host needed for firmware.
The problem is, dma_alloc_coherent() with GFP_ATOMIC fails in
the platform (at least in AP platform) where it has less atomic
pool memory (< 2mb). QCA99X0 requires around 2 MB of host memory
for one card, having additional QCA99X0 card in the same platform
will require similarly amount of memory. So, it's not guaranteed that
all the platform will have enough atomic memory pool.

Fix this issue, by handling wmi service ready event in workqueue
context and calling dma_alloc_coherent() with GFP_KERNEL. mac80211 work
queue will not be ready at the time of handling wmi service ready.
So, it can't be used to handle wmi service ready. Also, register work
gets scheduled during insmod in existing ath10k_wq and waits for
wmi service ready to completed. Both workqueue can't be used for
this purpose. New auxiliary workqueue is added to handle wmi service
ready.
Signed-off-by: NRaja Mani <rmani@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      c8ecfc1c
  11. 29 7月, 2015 1 次提交
    • D
      ath10k: enable raw encap mode and software crypto engine · ccec9038
      由 David Liu 提交于 
      This patch enables raw Rx/Tx encap mode to support software based
crypto engine. This patch introduces a new module param 'cryptmode'.

 cryptmode:

   0: Use hardware crypto engine globally with native Wi-Fi mode TX/RX
      encapsulation to the firmware. This is the default mode.
   1: Use sofware crypto engine globally with raw mode TX/RX
      encapsulation to the firmware.

Known limitation:
   A-MSDU must be disabled for RAW Tx encap mode to perform well when
   heavy traffic is applied.

Testing: (by Michal Kazior <michal.kazior@tieto.com>)

     a) Performance Testing

      cryptmode=1
       ap=qca988x sta=killer1525
        killer1525  ->  qca988x     194.496 mbps [tcp1 ip4]
        killer1525  ->  qca988x     238.309 mbps [tcp5 ip4]
        killer1525  ->  qca988x     266.958 mbps [udp1 ip4]
        killer1525  ->  qca988x     477.468 mbps [udp5 ip4]
        qca988x     ->  killer1525  301.378 mbps [tcp1 ip4]
        qca988x     ->  killer1525  297.949 mbps [tcp5 ip4]
        qca988x     ->  killer1525  331.351 mbps [udp1 ip4]
        qca988x     ->  killer1525  371.528 mbps [udp5 ip4]
       ap=killer1525 sta=qca988x
        qca988x     ->  killer1525  331.447 mbps [tcp1 ip4]
        qca988x     ->  killer1525  328.783 mbps [tcp5 ip4]
        qca988x     ->  killer1525  375.309 mbps [udp1 ip4]
        qca988x     ->  killer1525  403.379 mbps [udp5 ip4]
        killer1525  ->  qca988x     203.689 mbps [tcp1 ip4]
        killer1525  ->  qca988x     222.339 mbps [tcp5 ip4]
        killer1525  ->  qca988x     264.199 mbps [udp1 ip4]
        killer1525  ->  qca988x     479.371 mbps [udp5 ip4]

      Note:
       - only open network tested for RAW vs nwifi performance comparison
       - killer1525 (qca6174 hw2.2) is 2x2 device (hence max 866mbps)
       - used iperf
       - OTA, devices a few cm apart from each other, no shielding
       - tcpX/udpX, X - means number of threads used

      Overview:
       - relative Tx performance drop is seen but is within reasonable and
         expected threshold (A-MSDU must be disabled with RAW Tx)

     b) Connectivity Testing

      cryptmode=1
       ap=iwl6205 sta1=qca988x crypto=open     topology-1ap1sta          OK
       ap=iwl6205 sta1=qca988x crypto=wep1     topology-1ap1sta          OK
       ap=iwl6205 sta1=qca988x crypto=wpa      topology-1ap1sta          OK
       ap=iwl6205 sta1=qca988x crypto=wpa-ccmp topology-1ap1sta          OK
       ap=qca988x sta1=iwl6205 crypto=open     topology-1ap1sta          OK
       ap=qca988x sta1=iwl6205 crypto=wep1     topology-1ap1sta          OK
       ap=qca988x sta1=iwl6205 crypto=wpa      topology-1ap1sta          OK
       ap=qca988x sta1=iwl6205 crypto=wpa-ccmp topology-1ap1sta          OK
       ap=iwl6205 sta1=qca988x crypto=open     topology-1ap1sta2br       OK
       ap=iwl6205 sta1=qca988x crypto=wep1     topology-1ap1sta2br       OK
       ap=iwl6205 sta1=qca988x crypto=wpa      topology-1ap1sta2br       OK
       ap=iwl6205 sta1=qca988x crypto=wpa-ccmp topology-1ap1sta2br       OK
       ap=qca988x sta1=iwl6205 crypto=open     topology-1ap1sta2br       OK
       ap=qca988x sta1=iwl6205 crypto=wep1     topology-1ap1sta2br       OK
       ap=qca988x sta1=iwl6205 crypto=wpa      topology-1ap1sta2br       OK
       ap=qca988x sta1=iwl6205 crypto=wpa-ccmp topology-1ap1sta2br       OK
       ap=iwl6205 sta1=qca988x crypto=open     topology-1ap1sta2br1vlan  OK
       ap=iwl6205 sta1=qca988x crypto=wep1     topology-1ap1sta2br1vlan  OK
       ap=iwl6205 sta1=qca988x crypto=wpa      topology-1ap1sta2br1vlan  OK
       ap=iwl6205 sta1=qca988x crypto=wpa-ccmp topology-1ap1sta2br1vlan  OK
       ap=qca988x sta1=iwl6205 crypto=open     topology-1ap1sta2br1vlan  OK
       ap=qca988x sta1=iwl6205 crypto=wep1     topology-1ap1sta2br1vlan  OK
       ap=qca988x sta1=iwl6205 crypto=wpa      topology-1ap1sta2br1vlan  OK
       ap=qca988x sta1=iwl6205 crypto=wpa-ccmp topology-1ap1sta2br1vlan  OK

      Note:
       - each test takes all possible endpoint pairs and pings
       - each pair-ping flushes arp table
       - ip6 is used

     c) Testbed Topology:

      1ap1sta:
        [ap] ---- [sta]

        endpoints: ap, sta

      1ap1sta2br:
        [veth0] [ap] ---- [sta] [veth2]
           |     |          |     |
        [veth1]  |          \   [veth3]
            \   /            \  /
            [br0]            [br1]

        endpoints: veth0, veth2, br0, br1
        note: STA works in 4addr mode, AP has wds_sta=1

      1ap1sta2br1vlan:
        [veth0] [ap] ---- [sta] [veth2]
           |     |          |     |
        [veth1]  |          \   [veth3]
            \   /            \  /
          [br0]              [br1]
            |                  |
          [vlan0_id2]        [vlan1_id2]

        endpoints: vlan0_id2, vlan1_id2
        note: STA works in 4addr mode, AP has wds_sta=1

Credits:

    Thanks to Michal Kazior <michal.kazior@tieto.com> who helped find the
    amsdu issue, contributed a workaround (already squashed into this
    patch), and contributed the throughput and connectivity tests results.
Signed-off-by: NDavid Liu <cfliu.tw@gmail.com>
Signed-off-by: NMichal Kazior <michal.kazior@tieto.com>
Tested-by: NMichal Kazior <michal.kazior@tieto.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      ccec9038
  13. 02 7月, 2015 3 次提交
    • R
      ath10k: configure frag desc memory to target for qca99X0 · d9156b5f
      由 Raja Mani 提交于 
      Pre qca99X0 chipsets follows the model where dynamically allocate
memory for frag desc on getting new skb for TX. But, this is not
going to be the case in qca99X0. It expects frag desc memory to be
allocated at boot time and let the driver to reuse allocated memory
after every TX completion. So there won't be any dynamic frag memory
memory allocation in qca99X0 during data transmission.

qca99X0 hardware doesn't need fragment desc address to be programmed
in msdu descriptor for every data transaction. It needs to know only
starting address of fragment descriptor at the time of the boot.
During data transmission, qca99X0 hardware can retrieve corresponding
frag addr by adding programmed frag desc base addr + msdu id.

Allocate continuous fragment descriptor memory (same size as number of
descriptor) at the time of target initialization and configure allocated
dma address to the target via HTT_H2T_MSG_TYPE_FRAG_DESC_BANK_CFG.

How this is allocated continuous memory is going to be used is not
covered in this patch. It just allocates memory and hand over to firmware.
If we don't do it at init time, qca99X0 will stall when firmware tries
to do TX.
Signed-off-by: NRaja Mani <rmani@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      d9156b5f
    • R
      ath10k: set max spatial stream to 4 for 10.4 fw · 5c8726ec
      由 Raja Mani 提交于 
      10.4 fw supports upto 4 spatial stream. Limit max spatial
stream to 4 for 10.4 firmware and to 3 for non 10.4 firmware.
Signed-off-by: NRaja Mani <rmani@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      5c8726ec
    • R
      ath10k: add 10.4 fw specific htt msg definitions · 721ad3ca
      由 Raja Mani 提交于 
      New htt event table is added for 10.4 firmware. Following new htt
events are available only 10.4. adding this to generic htt event
table,
	HTT_T2H_MSG_TYPE_EN_STATS,
	HTT_T2H_MSG_TYPE_TX_FETCH_IND,
	HTT_T2H_MSG_TYPE_TX_FETCH_CONF,
	HTT_T2H_MSG_TYPE_TX_LOW_LATENCY_IND
Signed-off-by: NRaja Mani <rmani@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      721ad3ca
  15. 30 6月, 2015 6 次提交
  17. 16 6月, 2015 1 次提交
  19. 01 6月, 2015 1 次提交
  21. 29 5月, 2015 1 次提交
    • M
      ath10k: handle cycle counter wraparound · 587f7031
      由 Michal Kazior 提交于 
      When QCA988X cycle counter HW register wraps
around it resets to 0x7fffffff instead of 0. All
other cycle counter related registers are divided
by 2 so they never wraparound themselves. QCA61X4
has a uniform CC and it wraparounds in a regular
fashion though.

Worst case wraparound time is approx 24 seconds
(2**31 / 88MHz). Since scan channel visit times
are max 5 seconds (offchannel case) it is
guaranteed there's been at most 1 wraparound and
it is possible to compute survey active time
value. It is, however, impossible to determine the
point at which Rx Clear Count has been divided by
two so it is not reported upon wraparound.

This fixes some occasional incorrect survey data
on QCA988X as some channels (depending on how/when
scan/offchannel requests were requested) would
have approx 24 sec active time which wasn't
actually the case.

This should improve hostapd ACS a little bit.
Reported-by: NSrinivasa Duvvuri <sduvvuri@chromium.org>
Signed-off-by: NMichal Kazior <michal.kazior@tieto.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      587f7031
  23. 05 5月, 2015 1 次提交
    • K
      ath10k: add ATH10K_FW_FEATURE_IGNORE_OTP_RESULT · d9153546
      由 Kalle Valo 提交于 
      qca6174 otp binary seems to always return an error to the host, even if the
calibration succeeded. Add a firmware feature flag to detect if the firmware
image which have this problem and workaround the issue in ath10k by ignoring
the error code.

I was also considering making this hw specific flag but as this is strictly a
firmware issue it's best to handle this via a firmware feature flag so that it
will be easy to disable the workaround.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      d9153546
  25. 22 4月, 2015 2 次提交
    • M
      ath10k: allow loading device specific board files · de57e2c8
      由 Michal Kazior 提交于 
      Some devices differ slightly and require different
board files. If wrong board data is used they
crash or behave incorrectly.

These devices can be differentiated by looking at
PCI subsystem device id. That is the case for
qca61x4 devices at least.

The board specific filename is constructed as:

 board-<bus>-<id>.bin

For PCI in particular it is:

 board-pci-<vendor>:<dev>:<subsys_vendor>:<subsys_dev>.bin

These files are looked in device/hw specific
directories. Hence for Killer 1525 (qca6174 hw2.1)
ath10k will request:

  /lib/firmware/ath10k/QCA6174/hw2.1/board-pci-168c:003e:1a56:1525.bin

To not break any existing setups (e.g. in case
some devices in the wild already have subsys ids)
if a board specific file isn't found a generic one
is used which is the one which would be used until
now. This guarantees that after upgrading a driver
device will not suddenly stop working due to
now-missing specific board file. If this is the
case a "fallback" string is appended to the info
string when driver boots.

Keep in mind this is distinct from cal-pci-*.bin
files which contain full calibration data and MAC
address. Cal data is aimed at systems where
calibration data is stored out of band, e.g. on
nand flash instead of device EEPROM - an approach
taken by some AP/router vendors.

Board files are more of a template and needs some
bits to be filled in by the OTP program using
device EEPROM contents.

One could argue to map subsystem ids to some board
design codename strings instead of using raw ids
when building the board filename. Using a mapping
however would make it a lot more cumbersome and
time consuming (due to how patches propagate over
various kernel trees) to add support for some new
device board designs. Adding a board file is a lot
quicker and doesn't require recompilation.
Signed-off-by: NMichal Kazior <michal.kazior@tieto.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      de57e2c8
    • M
      ath10k: share board file loading code across FW APIs · d0ed74f3
      由 Michal Kazior 提交于 
      There's no need to implement the same thing twice.
Reduce code duplication.
Signed-off-by: NMichal Kazior <michal.kazior@tieto.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      d0ed74f3
  27. 09 4月, 2015 1 次提交
  29. 02 4月, 2015 2 次提交
  31. 30 3月, 2015 6 次提交
  33. 04 3月, 2015 1 次提交
  35. 04 2月, 2015 1 次提交
  37. 27 1月, 2015 2 次提交
  39. 13 1月, 2015 1 次提交
  41. 23 12月, 2014 4 次提交
    • R
      ath10k: add thermal sensor device support · ac2953fc
      由 Rajkumar Manoharan 提交于 
      Temperature sensor generates electrical analog voltage from temperature
of each chain. The analog voltage is converted to digital value through
ADC. For reading temperature values fom user space, hw monitoring device
is used.

Whenever the user requests for current temperature, the driver sends WMI
command and wait for response. For reading temperature,

cat /sys/class/ieee80211/phy*/device/hwmon/hwmon2/temp1_input
Signed-off-by: NRajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      ac2953fc
    • R
      ath10k: add thermal cooling device support · fe6f36d6
      由 Rajkumar Manoharan 提交于 
      Thermal cooling device support is added to control the temperature
by throttling the data transmission for the given duration. Throttling
is done using hw MAC quiet time setting. Period, duration and offset
from TBTT can be set up to quiet the MAC transmits for the required duty
cycle (% of quiet duration). The thermal device allows user to configure
duty cycle.

The quiet params are derived as follows.
	period = max(25TU, beacon interval / number of bss)
	duration = period * duty cycle / 100

Quiet mode can be disabled by setting the duty cycle to 0. The cooling
device can be found under /sys/class/thermal/cooling_deviceX/.
Corresponding soft link to this device can be found under phy folder.

/sys/class/ieee80211/phy*/device/cooling_device.

To set duty cycle as 40%,

echo 40 >/sys/class/ieee80211/phy*/device/cooling_device/cur_state
Signed-off-by: NRajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      fe6f36d6
    • R
      ath10k: add 10.2.4 firmware support · 4a16fbec
      由 Rajkumar Manoharan 提交于 
      10.2.4 firmware uses bitmask in wmi_resource_config to configure
10.2 firmware features like airtime fairness and rx batch mode instead
of maintaining separete bool entry. This allows new features that can be
configure during init time without breaking backward compatibility.

kvalo: use WMI op version, bump up FW API to 4 to not break older versions of
ath10k
Signed-off-by: NRajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      4a16fbec
    • K
      ath10k: set max_num_vdevs based on wmi op version · 30c78167
      由 Kalle Valo 提交于 
      To make it easier to manage firmware differences, we should not use
ATH10K_FW_FEATURE_WMI_10X outside ath10k_core_init_firmware_features(). To
achieve that create new field ar->max_num_vdevs and set it based on wmi op
version.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
      30c78167