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* b43: remove extraneous code in free_ringmemoryJohn W. Linville2010-11-151-5/+0
| | | | | | | This code seems to have been cut-n-pasted from alloc_ringmemory? Anyway, it is useless. Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: replace the ssb_dma API with the generic DMA APIFUJITA Tomonori2010-06-041-31/+34
| | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Stefano Brivio <stefano.brivio@polimi.it> Cc: John W. Linville <linville@tuxdriver.com> Acked-by: Michael Buesch <mb@bu3sch.de> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* drivers/net/wireless/b43: Use kmemdupJulia Lawall2010-06-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | Use kmemdup when some other buffer is immediately copied into the allocated region. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; statement S; @@ - to = \(kmalloc\|kzalloc\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* b43: remove get_tx_stats() mac80211 opKalle Valo2010-02-081-17/+0
| | | | | | | | | | | | get_tx_stats() will be removed from mac80211. Compile-tested only. Cc: Stefano Brivio <stefano.brivio@polimi.it> Cc: Michael Buesch <mb@bu3sch.de> Cc: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Kalle Valo <kalle.valo@iki.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6John W. Linville2009-12-301-152/+45
|\ | | | | | | | | Conflicts: drivers/net/wireless/libertas/scan.c
| * Revert "b43: Enforce DMA descriptor memory constraints"John W. Linville2009-12-291-152/+45
| | | | | | | | | | | | | | | | | | | | | | This reverts commit 9bd568a50c446433038dec2a5186c5c57c3dbd23. That commit is shown to cause allocation failures during initialization on some machines. http://bugzilla.kernel.org/show_bug.cgi?id=14844 Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | b43: Allow PIO mode to be selected at module loadLarry Finger2009-12-281-2/+0
|/ | | | | | | | | | | | | | | If userencounter the "Fatal DMA Problem" with a BCM43XX device, and still wish to use b43 as the driver, their only option is to rebuild the kernel with CONFIG_B43_FORCE_PIO. This patch removes this option and allows PIO mode to be selected with a load-time parameter for the module. Note that the configuration variable CONFIG_B43_PIO is also removed. Once the DMA problem with the BCM4312 devices is solved, this patch will likely be reverted. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Tested-by: John Daiker <daikerjohn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Rewrite DMA Tx status handling sanity checksMichael Buesch2009-11-231-13/+54
| | | | | | | | | | | | This rewrites the error handling policies in the TX status handler. It tries to be error-tolerant as in "try hard to not crash the machine". It won't recover from errors (that are bugs in the firmware or driver), because that's impossible. However, it will return a more or less useful error message and bail out. It also tries hard to use rate-limited messages to not flood the syslog in case of a failure. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Enforce DMA descriptor memory constraintsMichael Buesch2009-11-181-45/+152
| | | | | | | | | | | | | | | | | Enforce all device constraints on the descriptor memory region. There are several constraints on the descriptor memory, as documented in the specification. The current code does not enforce them and/or incorrectly enforces them. Those constraints are: - The address limitations on 30/32bit engines, that also apply to the skbs. - The 4k alignment requirement on 30/32bit engines. - The 8k alignment requirement on 64bit engines. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Rewrite TX bounce buffer handlingMichael Buesch2009-11-111-28/+20
| | | | | | | | | Do not mess with the original skb, but allocate an independent bouncebuffer. This protects against bad interference with mac80211's assumptions about the skb (which already caused bugs). Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Fix DMA TX bounce buffer copyingMichael Buesch2009-10-301-2/+13
| | | | | | | | | | | | | | | | | | | b43 allocates a bouncebuffer, if the supplied TX skb is in an invalid memory range for DMA. However, this is broken in that it fails to copy over some metadata to the new skb. This patch fixes three problems: * Failure to adjust the ieee80211_tx_info pointer to the new buffer. This results in a kmemcheck warning. * Failure to copy the skb cb, which contains ieee80211_tx_info, to the new skb. This results in breakage of various TX-status postprocessing (Rate control). * Failure to transfer the queue mapping. This results in the wrong queue being stopped on saturation and can result in queue overflow. Signed-off-by: Michael Buesch <mb@bu3sch.de> Tested-by: Christian Casteyde <casteyde.christian@free.fr> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Do not use _irqsafe callbacksMichael Buesch2009-09-231-2/+2
| | | | | | | We don't need to call the irqsafe callbacks. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Remove DMA/PIO queue locksMichael Buesch2009-09-081-25/+5
| | | | | | | | | This removes the DMA/PIO queue locks. Locking is handled by wl->mutex now. Signed-off-by: Michael Buesch <mb@bu3sch.de> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Use a threaded IRQ handlerMichael Buesch2009-09-081-3/+2
| | | | | | | | | | | | Use a threaded IRQ handler to allow locking the mutex and sleeping while executing an interrupt. This removes usage of the irq_lock spinlock, but introduces a new hardirq_lock, which is _only_ used for the PCI/SSB lowlevel hard-irq handler. Sleeping busses (SDIO) will use mutex instead. Signed-off-by: Michael Buesch <mb@bu3sch.de> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: add hardware tkipgregor kowski2009-08-201-1/+1
| | | | | | | | This add hardware tkip for b43. Signed-off-by: Gregor Kowski <gregor.kowski@gmail.com> Acked-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Work around mac80211 race conditionLarry Finger2009-08-041-6/+15
| | | | | | | | | | | | | | | | | | | As shown in http://thread.gmane.org/gmane.linux.kernel.wireless.general/36497, mac80211 has a bug that allows a call to the TX routine after the queues have been stopped. This situation will only occur under extreme stress. Although b43 does not crash when this condition occurs, it does generate a WARN_ON and also logs a queue overrun message. This patch recognizes b43 is not at fault and logs a message only when the most verbose debugging mode is enabled. In the unlikely event that the queue is not stopped when the DMA queue becomes full, then a warning is issued. During testing of this patch with one output stream running repeated tcpperf writes and a second running a flood ping, this routine was entered with the DMA ring stopped about once per hour. The condition where the DMA queue is full but the ring has not been stopped has never been seen by me. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Add fw capabilitiesMichael Buesch2009-06-101-1/+1
| | | | | | | | | | | Add automagic feature flags, so the firmware can tell the driver about supported features and the driver can switch features on/off as needed. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de> Tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Refresh RX poison on buffer recyclingMichael Buesch2009-04-161-10/+11
| | | | | | | | | | The RX buffer poison needs to be refreshed, if we recycle an RX buffer, because it might be (partially) overwritten by some DMA operations. Cc: stable@kernel.org Cc: Francesco Gringoli <francesco.gringoli@ing.unibs.it> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Poison RX buffersMichael Buesch2009-04-161-4/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds poisoning and sanity checking to the RX DMA buffers. This is used for protection against buggy hardware/firmware that raises RX interrupts without doing an actual DMA transfer. This mechanism protects against rare "bad packets" (due to uninitialized skb data) and rare kernel crashes due to uninitialized RX headers. The poison is selected to not match on valid frames and to be cheap for checking. The poison check mechanism _might_ trigger incorrectly, if we are voluntarily receiving frames with bad PLCP headers. However, this is nonfatal, because the chance of such a match is basically zero and in case it happens it just results in dropping the packet. Bad-PLCP RX defaults to off, and you should leave it off unless you want to listen to the latest news broadcasted by your microwave oven. This patch also moves the initialization of the RX-header "length" field in front of the mapping of the DMA buffer. The CPU should not touch the buffer after we mapped it. Cc: stable@kernel.org Reported-by: Francesco Gringoli <francesco.gringoli@ing.unibs.it> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* dma-mapping: replace all DMA_30BIT_MASK macro with DMA_BIT_MASK(30)Yang Hongyang2009-04-071-3/+3
| | | | | | | | Replace all DMA_30BIT_MASK macro with DMA_BIT_MASK(30) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)Yang Hongyang2009-04-071-4/+4
| | | | | | | | Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)Yang Hongyang2009-04-071-3/+3
| | | | | | | | Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* b43: Pass more RX flags to mac80211Michael Buesch2009-03-051-1/+0
| | | | | | | | | | | This changes the RX handler to pass more status flags to mac80211. It also changes part of the drop policy, if bad frames were requested. (Note that currently mac80211 will throw a WARN_ON in that case. But nothing bad will happen). This also removes some obsolete unused timestamping code. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: checkpatch.pl cleanupsJohn Daiker2009-02-271-2/+2
| | | | | | | | | | | Keeping this one simple. Changing a few "foo * bar" to "foo *bar" Removes 22 checkpatch.pl errors, with no introduced warnings. Signed-off-by: John Daiker <daikerjohn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Add slot count compiletime assertionMichael Buesch2009-02-271-0/+3
| | | | | | | | | | This adds a compiletime assertion for a recently introduced assumption on the slot counts. The tx header cache handling code assumes that the TX slot count can be divided evenly by the number of TX slots per frame. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Optimize DMA buffersMichael Buesch2009-02-271-15/+23
| | | | | | | | | | | | | | | | | | | | In the old days we used one slot per frame. But when we changed that to 2, we didn't raise the overall slot count. Which resulted in an effective division of two to the number of slots. Double the number of TX slots, so we have an effective hardware queue of 128 frames per QoS queue. Also optimize the TX header cache handling. We don't need a cached TX header for slots that will never carry an actual header. So we reduce the memory consumption of the cache by 50%. So as a net result we end up with more or less the same memory usage before and after this patch (except a few tiny meta structures), but have twice the number of TX slots available. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Fix DMA buffer size handlingMichael Buesch2009-02-271-7/+2
| | | | | | | | | | | | This fixes hidden bugs in the size handling of the DMA buffers. This sets the RX buffer size to the theoretical max packet size and fixes passing of the size values to the device (must not subtract the header offset). These bugs are hidden and don't actually trigger due to the magic +100 offset for the buffer size. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Move DMA stop sanity checkMichael Buesch2009-02-271-4/+6
| | | | | | | | Move the DMA stop sanity check up a few lines, so it's actually theoretically possible to trigger. (But it still shouldn't trigger, of course). Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211/drivers: rewrite the rate control APIJohannes Berg2008-11-011-3/+1
| | | | | | | | | | | | So after the previous changes we were still unhappy with how convoluted the API is and decided to make things simpler for everybody. This completely changes the rate control API, now taking into account 802.11n with MCS rates and more control, most drivers don't support that though. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ssb, b43, b43legacy, b44: Rewrite SSB DMA APIMichael Buesch2008-06-271-30/+35
| | | | | | | | | | | This is a rewrite of the DMA API for SSB devices. This is needed, because the old (non-existing) "API" made too many bad assumptions on the API of the host-bus (PCI). This introduces an almost complete SSB-DMA-API that maps to the lowlevel bus-API based on the bustype. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of ↵David S. Miller2008-06-171-33/+32
|\ | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/rt2x00/Kconfig drivers/net/wireless/rt2x00/rt2x00usb.c net/sctp/protocol.c
| * b43: Fix possible NULL pointer dereference in DMA codeMichael Buesch2008-06-131-33/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a possible NULL pointer dereference in an error path of the DMA allocation error checking code. This is also necessary for a future DMA API change that is on its way into the mainline kernel that adds an additional dev parameter to dma_mapping_error(). This patch moves the whole struct b43_dmaring struct initialization right before any DMA allocation operation. Reported-by: Miles Lane <miles.lane@gmail.com> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: use multi-queue master netdeviceJohannes Berg2008-05-221-3/+4
| | | | | | | | | | | | | | | | | | | | This patch updates mac80211 and drivers to be multi-queue aware and use that instead of the internal queue mapping. Also does a number of cleanups in various pieces of the code that fall out and reduces internal mac80211 state size. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: move TX info into skb->cbJohannes Berg2008-05-221-20/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts mac80211 and all drivers to have transmit information and status in skb->cb rather than allocating extra memory for it and copying all the data around. To make it fit, a union is used where only data that is necessary for all steps is kept outside of the union. A number of fixes were done by Ivo, as well as the rt2x00 part of this patch. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: clean up get_tx_stats callbackJohannes Berg2008-05-071-5/+3
|/ | | | | | | | | | The callback takes a ieee80211_tx_queue_stats with a contained array of ieee80211_tx_queue_stats_data, remove the former, rename the latter to ieee80211_tx_queue_stats and make tx_stats() take the array directly. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Workaround DMA quirksMichael Buesch2008-04-241-8/+39
| | | | | | | | | | | Some mainboards/CPUs don't allow DMA masks bigger than a certain limit. Some VIA crap^h^h^h^hdevices have an upper limit of 0xFFFFFFFF. So in this case a 64-bit b43 device would always fail to acquire the mask. Implement a workaround to fallback to lower DMA mask, as we can always also support a lower mask. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of ↵David S. Miller2008-04-181-13/+14
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
| * ssb: Fix usage of struct device used for DMAingMichael Buesch2008-04-151-13/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes DMA on architectures where DMA is nontrivial, like PPC64. We must use the host-device's (PCI) struct device for any DMA operation instead of the SSB device. For this we add a new struct device pointer to the SSB device structure that will always point to the right device for DMAing. Without this patch b43 and b44 drivers won't work on complex-DMA architectures, that for example need dev->archdata for DMA operations. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | b43: Add PIO support for PCMCIA devicesMichael Buesch2008-04-081-56/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds PIO support back (D'oh!) for PCMCIA devices. This is a complete rewrite of the old PIO code. It does actually work and we get reasonable performance out of it on a modern machine. On a PowerBook G4 I get a few MBit for TX and a few more for RX. So it doesn't work as well as DMA (of course), but it's a _lot_ faster than the old PIO code (only got a few kBit with that). The limiting factor is the host CPU speed. So it will generate 100% CPU usage when the network interface is heavily loaded. A voluntary preemption point in the RX path makes sure Desktop Latency isn't hurt. PIO is needed for 16bit PCMCIA devices, as we really don't want to poke with the braindead DMA mechanisms on PCMCIA sockets. Additionally, not all PCMCIA sockets do actually support DMA in 16bit mode (mine doesn't). Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | Merge branch 'master' of ↵David S. Miller2008-04-031-1/+6
|\| | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/s2io.c
| * b43: Add DMA mapping failure messagesMichael Buesch2008-04-011-1/+6
| | | | | | | | | | | | | | | | | | This adds messages for some DMA mapping failures. These are useful for debugging DMA address problems, as they appear on x86_64 machines with IOMMU enabled. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | Merge branch 'master' of ↵David S. Miller2008-03-281-12/+20
|\| | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/usb/rndis_host.c drivers/net/wireless/b43/dma.c net/ipv6/ndisc.c
| * b43: Remove irqs_disabled() sanity checksMichael Buesch2008-03-251-2/+3
| | | | | | | | | | | | | | | | Remove all irqs_disabled() sanity checks, as they are not safe on a RT-enabled kernel and will trigger bogus warnings. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * b43: Fix DMA mapping leakageMichael Buesch2008-03-251-10/+17
| | | | | | | | | | | | | | | | | | This fixes a DMA mapping leakage in the case where we reject a DMA buffer because of its address. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Christian Casteyde <casteyde.christian@free.fr> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | b43: Fix failed frames status report typoMichael Buesch2008-03-071-1/+1
| | | | | | | | | | | | | | This fixes a typo in the status report. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | b43: Add TX statistics debugging countersMichael Buesch2008-03-071-15/+73
| | | | | | | | | | | | | | | | | | This adds a few debugging counters, that are useful for debugging the "card does not transmit" or "connection is unstable" kind of problems. It's also useful for tuning an RC algorithm. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | b43: Rename the DMA ring pointersMichael Buesch2008-03-071-151/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | Rename the DMA ring pointers to have more descriptive and standard names. Also remove the 6th unused TX ring. We can add it back later, if we need it. The unused TX-status rx-ring is also removed, as that's only used by legacy devices not supported by this driver anyway. This is no functional change, except less memory allocation for the removed rings. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | b43: Add QOS supportMichael Buesch2008-03-071-50/+40
|/ | | | | | | | This adds QOS support to the b43 driver. QOS can be disabled on driver level with a module parameter for debugging purposes. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Fix DMA for 30/32-bit DMA enginesMichael Buesch2008-02-051-47/+90
| | | | | | | | This checks if the DMA address is bigger than what the controller can manage. It will reallocate the buffers in the GFP_DMA zone in that case. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 12:15:47 +0100