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path: root/drivers/net/wireless/zd1211rw/zd_usb.h
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2015-11-18zd1211rw: move under zydas vendor directoryKalle Valo
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2013-12-11zd1211rw: Fix FSF address in file headersJeff Kirsher
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: linux-wireless@vger.kernel.org CC: Daniel Drake <dsd@gentoo.org> CC: Ulrich Kunitz <kune@deine-taler.de> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-06wireless: Remove casts to same typeJoe Perches
Adding casts of objects to the same type is unnecessary and confusing for a human reader. For example, this cast: int y; int *p = (int *)&y; I used the coccinelle script below to find and remove these unnecessary casts. I manually removed the conversions this script produces of casts with __force, __iomem and __user. @@ type T; T *p; @@ - (T *)p + p Neatened the mwifiex_deauthenticate_infra function which was doing odd things with array pointers and not using is_zero_ether_addr. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-22zd1211rw: handle lost read-reg interruptsJussi Kivilinna
Device losses read-reg interrupts. By looking at usbmon it appears that USB_INT_ID_RETRY_FAILED can override USB_INT_ID_REGS. This causes read command to timeout, usually under heavy TX. Fix by retrying read registers again if USB_INT_ID_RETRY_FAILED is received while waiting for USB_INT_ID_REGS. However USB_INT_ID_REGS is not always lost but is received after USB_INT_ID_RETRY_FAILED and is usually received by the retried read command. USB_INT_ID_REGS of the retry is then left unhandled and might be received by next read command. Handle this by ignoring previous USB_INT_ID_REGS that doesn't match current read command request. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-07Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 Conflicts: drivers/net/wireless/rtlwifi/efuse.c drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c net/bluetooth/mgmt.c
2011-04-07zd1211rw: rename CR* macros to ZD_CR*Jussi Kivilinna
With compat-wireless CR* macros in zd_usb.h conflict with CR macros in include/asm-generic/termbits.h. So rename CR* macros to ZD_CR*. Conversion was done with using sed and then 'over 80 character line' checkpatch.pl warnings and comment indents were fixed. Reported-by: Walter Goldens <goldenstranger@yahoo.com> Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-04zd1211rw: reset rx idle timer from taskletJussi Kivilinna
2.6.38 added WARN_ON(in_irq) in del_timer_sync that triggers on zd1211rw when reseting rx idle timer in urb completion handler. Move timer reseting to tasklet. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-14zd1211rw: move async iowrite16v up to callersJussi Kivilinna
Writing beacon to device happen through multiple write command calls. zd_usb_iowrite16v uses synchronous urb call and with multiple write commands in row causes high CPU usage. Make asynchronous zd_usb_iowrite16v_async available outside zd_usb.c and use where possible. This lower CPU usage from ~10% to ~2% on Intel Atom when running AP-mode with 100 TU beacon interval. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-14zd1211rw: use async urb for write commandJussi Kivilinna
Writing beacon to device happen through multiple write command calls. zd_usb_iowrite16v uses synchronous urb call and with multiple write commands in row causes high CPU usage. This patch makes zd_usb_iowrite16v use asynchronous urb submit within zd_usb.c. zd_usb_iowrite16v_async_start is used to initiate writing multiple commands to device using zd_usb_iowrite16v_async. Each URB is delayed and submitted to device by next zd_usb_iowrite16v_async call or by call to zd_usb_iowrite16v_async_end. URBs submitted by zd_usb_iowrite16v_async have URB_NO_INTERRUPT set and last URB send by zd_usb_iowrite16v_async_end does not. This lower CPU usage when doing writes that require multiple URBs. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-04zd1211rw: reset rx urbs after idle period of 30 secondsJussi Kivilinna
RX appears to freeze while idle. Resetting rx-urbs appears to be enough to fix this. Do reset 30 seconds after last rx. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-04zd1211rw: add TX watchdog and device resettingJussi Kivilinna
When doing transfers at high speed for long time, tx queue can freeze. So add tx watchdog. TX-watchdog checks for locked tx-urbs and reset hardware when such is detected. Merely unlinking urb was not enough, device have to be reseted. Hw settings are restored so that any open link will stay on after reset. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-04zd1211rw: change interrupt URB buffer to DMA bufferJussi Kivilinna
As might lower beacon update CPU usage. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-04zd1211rw: use stack and preallocated memory for small cmd-buffersJussi Kivilinna
Use stack for allocing small < 64 byte arrays in zd_chip.c and preallocated buffer in zd_usb.c. This might lower CPU usage for beacon setup. v2: - Do not use stack buffers in zd_usb.c as they would be used for urb transfer_buffer. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-04zd1211rw: use urb anchors for tx and fix tx-queue disablingJussi Kivilinna
When stress testing AP-mode I hit OOPS when unpluging or rmmodding driver. It appears that when tx-queue is disabled, tx-urbs might be left pending. These can cause ehci to call non-existing tx_urb_complete() (after rmmod) or uninitialized/reseted private structure (after disconnect()). Add skb queue for submitted packets and unlink pending urbs on zd_usb_disable_tx(). Part of the problem seems to be usb->free_urb_list that isn't always working as it should, causing machine freeze when trying to free the list in zd_usb_disable_tx(). Caching free urbs isn't what other drivers seem to be doing (usbnet for example) so strip free_usb_list. Patch makes tx-urb handling saner with use of urb anchors. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-03drivers/net: use __packed annotationEric Dumazet
cleanup patch. Use new __packed annotation in drivers/net/ Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28zd1211rw: add copyright noticesDaniel Drake
Requested by Michael Wu. Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-01-28zd1211rw: port to mac80211Daniel Drake
This seems to be working smoothly now. Let's not hold back the mac80211 transition any further. This patch ports the existing driver from softmac to mac80211. Many thanks to everyone who helped out with the porting efforts. Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-07-10[PATCH] zd1211rw: Defer firmware load until first ifupDaniel Drake
While playing with the firmware a while back, I discovered a way to access the device's entire address space before the firmware has been loaded. Previously we were loading the firmware early on (during probe) so that we could read the MAC address from the EEPROM and register a netdevice. Now that we can read the EEPROM without having firmware, we can defer firmware loading until later while still reading the MAC address early on. This has the advantage that zd1211rw can now be built into the kernel -- previously if this was the case, zd1211rw would be loaded before the filesystem is available and firmware loading would fail. Firmware load and other device initialization operations now happen the first time the interface is brought up. Some architectural changes were needed: handling of the is_zd1211b flag was moved into the zd_usb structure, MAC address handling was obviously changed, and a preinit_hw stage was added (the order is now: init, preinit_hw, init_hw). Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-02-05[PATCH] zd1211rw: Remove addressing abstractionDaniel Drake
Instead of passing our own custom 32-bit addresses around and translating them, this patch makes all our register address constants absolute and removes the translation. There are two ugly parts: - fw_reg_addr() is needed to compute addresses of firmware registers, as this is dynamic based upon firmware - inc_addr() needs a small hack to handle byte vs word addressing However, both of those are only small, and we don't use fw_regs a whole lot anyway. The bonuses here include simplicity and improved driver readability. Also, the fact that registers are now referenced by 16-bit absolute addresses (as opposed to 32-bit pseudo addresses) means that over 2kb compiled code size has been shaved off. Includes some touchups and sparse fixes from Ulrich Kunitz. Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-11-28Revert "[PATCH] zd1211rw: Removed unneeded packed attributes"John W. Linville
This reverts commit 4e1bbd846d00a245dcf78b6b331d8a9afed8e6d7. Quoth Daniel Drake <dsd@gentoo.org>: "A user reported that commit 4e1bbd846d00a245dcf78b6b331d8a9afed8e6d7 (Remove unneeded packed attributes) breaks the zd1211rw driver on ARM." Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-09-25[PATCH] zd1211rw: Added workqueueUlrich Kunitz
For housekeeping and watchdog tasks a workqueue is created. The central workqueue is not used to prevent crashes creates by bugs. It might be changed, when the housekeeping is stabilized. Signed-off-by: Ulrich Kunitz <kune@deine-taler.de> Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-09-11[PATCH] zd1211rw: Removed unneeded packed attributesUlrich Kunitz
Inspired by an e-mail by Stephen Hemminger I decided to remove all unneeded packed attributes from the code where the member variables are already aligned. This avoids horrible code being generated on some architectures. Signed-off-by: Ulrich Kunitz <kune@deine-taler.de> Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-08-14[PATCH] zd1211rw: Convert installer CDROM device into WLAN deviceDaniel Drake
Some devices identify themselves as a virtual USB CDROM drive. The virtual CD includes the windows driver. We aren't interested in this, so we eject the virtual CDROM and then the real wireless device appears. Patch fixed over the earlier version to not leak cmd, thanks to Michael Buesch for spotting that. Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-07-05[PATCH] ZyDAS ZD1211 USB-WLAN driverDaniel Drake
There are 60+ USB wifi adapters available on the market based on the ZyDAS ZD1211 chip. Unlike the predecessor (ZD1201), ZD1211 does not have a hardware MAC, so most data operations are coordinated by the device driver. The ZD1211 chip sits alongside an RF transceiver which is also controlled by the driver. Our driver currently supports 2 RF types, we know of one other available in a few marketed products which we will be supporting soon. Our driver also supports the newer revision of ZD1211, called ZD1211B. The initialization and RF operations are slightly different for the new revision, but the main difference is 802.11e support. Our driver does not support the QoS features yet, but we think we know how to use them. This driver is based on ZyDAS's own GPL driver available from www.zydas.com.tw. ZyDAS engineers have been responsive and supportive of our efforts, so thumbs up to them. Additionally, the firmware is redistributable and they have provided device specs. This driver has been written primarily by Ulrich Kunitz and myself. Graham Gower, Greg KH, Remco and Bryan Rittmeyer have also contributed. The developers of ieee80211 and softmac have made our lives so much easier- thanks! We maintain a small info-page: http://zd1211.ath.cx/wiki/DriverRewrite If there is enough time for review, we would like to aim for inclusion in 2.6.18. The driver works nicely as a STA, and can connect to both open and encrypted networks (we are using software-based encryption for now). We will work towards supporting more advanced features in the future (ad-hoc, master mode, 802.11a, ...). Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>