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2011-11-04dma: Avoid reentrancy in DMA transfer handlersKevin Wolf1-0/+10
With the conversion of the block layer to coroutines, bdrv_read/write have changed to run a nested event loop that calls qemu_bh_poll. Consequently a scheduled BH can be called while a DMA transfer handler runs and this means that DMA_run becomes reentrant. Devices haven't been designed to cope with that, so instead of running a nested transfer handler just wait for the next invocation of the BH from the main loop. This fixes some problems with the floppy device. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-07-06savevm: Add DeviceState paramAlex Williamson1-2/+2
When available, we'd like to be able to access the DeviceState when registering a savevm. For buses with a get_dev_path() function, this will allow us to create more unique savevm id strings. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-05-22Compile dma only onceBlue Swirl1-7/+10
Use a qemu_irq to request CPU exit. 7 compilations less for the full build. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-01-12dma/sb16: make clang analyzer not complainmalc1-1/+0
Signed-off-by: malc <av1474@comtv.ru>
2009-10-05vmstate: add version_id argument to post_loadJuan Quintela1-1/+1
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01Revert "Get rid of _t suffix"Anthony Liguori1-2/+2
In the very least, a change like this requires discussion on the list. The naming convention is goofy and it causes a massive merge problem. Something like this _must_ be presented on the list first so people can provide input and cope with it. This reverts commit 99a0949b720a0936da2052cb9a46db04ffc6db29. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01Get rid of _t suffixmalc1-2/+2
Some not so obvious bits, slirp and Xen were left alone for the time being. Signed-off-by: malc <av1474@comtv.ru>
2009-09-11vmstate: port dma deviceJuan Quintela1-51/+34
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29Revert "Introduce reset notifier order"Jan Kiszka1-1/+1
This reverts commit 8217606e6edb49591b4a6fd5a0d1229cebe470a9 (and updates later added users of qemu_register_reset), we solved the problem it originally addressed less invasively. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22Introduce reset notifier orderJan Kiszka1-1/+1
Add the parameter 'order' to qemu_register_reset and sort callbacks on registration. On system reset, callbacks with lower order will be invoked before those with higher order. Update all existing users to the standard order 0. Note: At least for x86, the existing users seem to assume that handlers are called in their registration order. Therefore, the patch preserves this property. If someone feels bored, (s)he could try to identify this dependency and express it properly on callback registration. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-03-16Delete some unused macros detected with -Wp,-Wunused-macros useblueswir11-2/+0
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6856 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-07Use a dedicated function to request exit from execution loopaurel321-1/+1
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6762 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-22Use the ARRAY_SIZE() macro where appropriate.malc1-4/+2
Change from v1: Avoid changing the existing coding style in certain files. Signed-off-by: Stuart Brady <stuart.brady@gmail.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6120 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-31Make DMA bottom-half driven (v2)aliguori1-2/+28
The current DMA routines are driven by a call in main_loop_wait() after every select. This patch converts the DMA code to be driven by a constantly rescheduled bottom half. The advantage of using a scheduled bottom half is that we can stop scheduling the bottom half when there no DMA channels are runnable. This means we can potentially detect this case and sleep longer in the main loop. The only two architectures implementing DMA_run() are cris and i386. For cris, I converted it to a simple repeating bottom half. I've only compile tested this as cris does not seem to work on a 64-bit host. It should be functionally identical to the previous implementation so I expect it to work. For x86, I've made sure to only fire the DMA bottom half if there is a DMA channel that is runnable. The effect of this is that unless you're using sb16 or a floppy disk, the DMA bottom half never fires. You probably should test this malc. My own benchmarks actually show slight improvement by it's possible the change in timing could affect your demos. Since v1, I've changed the code to use a BH instead of a timer. cris at least seems to depend on faster than 10ms polling. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5573 c046a42c-6fe2-441c-8c8c-71466251a162
2008-07-05Re-add static qualifier. Fix annother occurance of "const static".pbrook1-1/+1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4850 c046a42c-6fe2-441c-8c8c-71466251a162
2008-07-05Remove staticmalc1-1/+1
Also avoids GCC warning about old style declaration git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4849 c046a42c-6fe2-441c-8c8c-71466251a162
2008-01-14pthreads-based audio and miscellaneous audio clean-up (malc).balrog1-0/+10
ESD support (malc, Frederick Reeve). git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3917 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-16qemu_put signedness fixes, by Andre Przywara.ths1-6/+6
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3824 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-17Break up vl.h.pbrook1-1/+2
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3674 c046a42c-6fe2-441c-8c8c-71466251a162
2007-06-08 Fix incorrect target_ulong use in hw devicesblueswir11-2/+2
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2962 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-21cpu_single_env usage fixbellard1-1/+3
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1644 c046a42c-6fe2-441c-8c8c-71466251a162
2004-11-14indent fixesbellard1-17/+17
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1140 c046a42c-6fe2-441c-8c8c-71466251a162
2004-11-07audio merge (malc)bellard1-55/+160
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1125 c046a42c-6fe2-441c-8c8c-71466251a162
2004-06-21high page register support for PPC PREPbellard1-7/+42
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@951 c046a42c-6fe2-441c-8c8c-71466251a162
2004-06-20new reset APIbellard1-1/+8
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@938 c046a42c-6fe2-441c-8c8c-71466251a162
2004-06-07debugbellard1-0/+2
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@910 c046a42c-6fe2-441c-8c8c-71466251a162
2004-04-12fixed invalid command testbellard1-7/+3
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@721 c046a42c-6fe2-441c-8c8c-71466251a162
2004-04-06dma clean up - added missing read accessesbellard1-61/+88
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@711 c046a42c-6fe2-441c-8c8c-71466251a162
2004-03-31win32 port (initial patch by kazu)bellard1-5/+0
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@692 c046a42c-6fe2-441c-8c8c-71466251a162
2004-03-14io port API changebellard1-12/+12
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@661 c046a42c-6fe2-441c-8c8c-71466251a162
2004-02-25DMA API changebellard1-27/+18
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@646 c046a42c-6fe2-441c-8c8c-71466251a162
2004-01-1916 bit DMA fix (malc)bellard1-28/+10
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@572 c046a42c-6fe2-441c-8c8c-71466251a162
2004-01-05debug fixesbellard1-13/+13
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@542 c046a42c-6fe2-441c-8c8c-71466251a162
2003-11-13Soundblaster 16 support (malc)bellard1-0/+395
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@455 c046a42c-6fe2-441c-8c8c-71466251a162
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