To achieve maximal throughput, it is very important to react to
interrupts as soon as possible. Currently the interrupt handler wakes up
a worker for handling interrupts in process context. A cleaner and more
efficient design would be to request a threaded interrupt handler. This
handler's priority is very high, and can do blocking operations such as
SDIO/SPI transactions.
Some work can be deferred, mostly calls to mac80211 APIs
(ieee80211_rx_ni and ieee80211_tx_status). By deferring such work to a
different worker, we can keep the irq handler thread more I/O
responsive. In addition, on multi-core systems the two threads can be
scheduled on different cores, which will improve overall performance.
The use of WL1271_FLAG_IRQ_PENDING & WL1271_FLAG_IRQ_RUNNING was
changed. For simplicity, always query the FW for more pending
interrupts. Since there are relatively long bursts of interrupts, the
extra FW status read overhead is negligible. In addition, this enables
registering the IRQ handler with the ONESHOT option.
Signed-off-by: Ido Yariv <ido@wizery.com>
Reviewed-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
On newer hardware revisions, there is no need to write the host's
counter at the end of a RX transaction. The same applies to writing the
number of packets at the end of a TX transaction.
It is generally a good idea to avoid unnecessary SDIO/SPI transfers.
Throughput and CPU usage are improved when avoiding these.
Send the host's RX counter and the TX packet count only if needed, based
on the hardware revision.
[Changed WL12XX_QUIRK_END_OF_TRANSACTION to use BIT(0) -- Luca]
Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Reviewed-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
for debugging purposes, wl12xx determines whether a rx packet
is a beacon packet.
however, it checks only the frame_control subtype without checking
the actual packet type, which leads to false identification in some
cases.
use ieee80211_is_beacon instead.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This patch adds support for the new wl12xx firmware (Rev 6.1.3.50.49)
Since this fw is not backward compatible with previous fw versions,
a new fw (with different name) is being fetched.
(the patch is big because it contains all the required fw api changes.
splitting it into multiple patches will result in corrupted intermediate
commits)
Signed-off-by: Eliad Peller <eliad@wizery.com>
Reviewed-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Set filters according to the mode of operation.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Reviewed-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Note that wl1271_write32() calls cpu_to_le32() by itself, so calling
wl1271_write32(addr, cpu_to_le32(val)) is in fact a bug on BE systems.
Fix the following sparse warnings:
drivers/net/wireless/wl12xx/cmd.c:662:16: warning: incorrect type in assignment (different base types)
drivers/net/wireless/wl12xx/cmd.c:662:16: expected unsigned short [unsigned] [addressable] [usertype] llc_type
drivers/net/wireless/wl12xx/cmd.c:662:16: got restricted __be16 [usertype] <noident>
drivers/net/wireless/wl12xx/cmd.c:674:17: warning: incorrect type in assignment (different base types)
drivers/net/wireless/wl12xx/cmd.c:674:17: expected unsigned int [unsigned] [addressable] [usertype] sender_ip
drivers/net/wireless/wl12xx/cmd.c:674:17: got restricted __be32 [usertype] ip_addr
drivers/net/wireless/wl12xx/rx.c:202:4: warning: incorrect type in argument 3 (different base types)
drivers/net/wireless/wl12xx/rx.c:202:4: expected unsigned int [unsigned] [usertype] val
drivers/net/wireless/wl12xx/rx.c:202:4: got restricted __le32 [usertype] <noident>
drivers/net/wireless/wl12xx/acx.c:1247:23: warning: incorrect type in assignment (different base types)
drivers/net/wireless/wl12xx/acx.c:1247:23: expected restricted __le32 [usertype] ht_capabilites
drivers/net/wireless/wl12xx/acx.c:1247:23: got unsigned long
drivers/net/wireless/wl12xx/acx.c:1250:24: warning: invalid assignment: |=
drivers/net/wireless/wl12xx/acx.c:1250:24: left side has type restricted __le32
drivers/net/wireless/wl12xx/acx.c:1250:24: right side has type unsigned long
drivers/net/wireless/wl12xx/acx.c:1253:24: warning: invalid assignment: |=
drivers/net/wireless/wl12xx/acx.c:1253:24: left side has type restricted __le32
drivers/net/wireless/wl12xx/acx.c:1253:24: right side has type unsigned long
drivers/net/wireless/wl12xx/acx.c:1256:24: warning: invalid assignment: |=
drivers/net/wireless/wl12xx/acx.c:1256:24: left side has type restricted __le32
drivers/net/wireless/wl12xx/acx.c:1256:24: right side has type unsigned long
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Extend channel to frequency mapping for 802.11j Japan 4.9GHz band, according to
IEEE802.11 section 17.3.8.3.2 and Annex J. Because there are now overlapping
channel numbers in the 2GHz and 5GHz band we can't map from channel to
frequency without knowing the band. This is no problem as in most contexts we
know the band. In places where we don't know the band (and WEXT compatibility)
we assume the 2GHz band for channels below 14.
This patch does not implement all channel to frequency mappings defined in
802.11, it's just an extension for 802.11j 20MHz channels. 5MHz and 10MHz
channels as well as 802.11y channels have been omitted.
The following drivers have been updated to reflect the API changes:
iwl-3945, iwl-agn, iwmc3200wifi, libertas, mwl8k, rt2x00, wl1251, wl12xx.
The drivers have been compile-tested only.
Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: Brian Prodoehl <bprodoehl@gmail.com>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
All files name prefix removed due to the fact that wl12xx driver supports
wl1271 and wl1273.
Also the definition in Kconfig and header files changed respectively.
Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Now that all 1271 files are split, we can add wl1251_ prefix to the files.
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Rx descriptor was incorrectly allocated from stack, use struct wl12xx
instead. Needed for DMA transfers.
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Rework cmd and acx interfaces, it was just too confusing earlier. Now
all commands need to contain all the needed headers, either just cmd
headers or both cmd and acx headers. This accomplish to remove the
extra copy done for each command. The interfaces are now properly
documented as well.
Also try to make all commands safe for DMA transfers. I might have missed
some, but most of them should be fixed now.
And this is not all! As a free bonus you will also get some cosmetic
cleanups and code reorganisation. Order today!
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
wl12xx is a driver for TI wl1251 802.11 chipset designed for embedded
devices, supporting both SDIO and SPI busses. Currently the driver
supports only SPI. Adding support 1253 (the 5 GHz version) should be
relatively easy. More information here:
http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?contentId=4711&navigationId=12494&templateId=6123
(Collapsed original sequence of pre-merge patches into single commit for
initial merge. -- JWL)
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Ido Yariv