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2012-03-12maintainers: Add docs/tracing.txt to TracingAndreas Färber1-0/+1
The topic of whether and by whom docs/tracing.txt is maintained was brought up. It currently does not have an official maintainer. Add it to the tracing section so that Stefan gets cc'ed on patches. Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-12docs: correct ./configure line in tracing.txtJun Koi1-1/+1
This patch corrects the configure's trace option in docs/tracing.txt. Signed-off-by: Jun Koi <junkoi2004@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-12trace: make trace_thread_create() use its function argJun Koi1-1/+1
This patch makes trace_thread_create() to use its function arg to initialize thread. The other choice is to make this a function to use void arg, but i prefer this way. Signed-off-by: Jun Koi <junkoi2004@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-12tracetool: Omit useless QEMU_*_ENABLED() checkStefan Hajnoczi1-3/+1
SystemTap provides a "semaphore" that can optionally be tested before executing a trace event. The purpose of this mechanism is to skip expensive tracing code when the trace event is disabled. For example, some applications may have trace events that format or convert strings for trace events. This expensive processing should only be done in the case where the trace event is enabled. Since QEMU's generated trace events never have such special-purpose code, there is no reason to add the semaphore check. Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-12trace: Provide a per-event status define for conditional compilationLluís Vilanova2-7/+48
Adds a 'TRACE_${NAME}_ENABLED' preprocessor define for each tracing event in "trace.h". This lets the user conditionally compile code with a relatively high execution cost that is only necessary when producing the tracing information for an event that is enabled. Note that events using this define will probably have the "disable" property by default, in order to avoid such costs on regular builds. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-11Add missing const attributes for MemoryRegionOpsStefan Weil9-13/+13
Most MemoryRegionOps already had the const attribute. This patch adds it to the remaining ones. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-11tcg: Improve tcg_out_label and fix its usage for w64Stefan Weil4-14/+14
tcg_out_label is always called with a third argument of pointer type which was casted to tcg_target_long. These casts can be avoided by changing the prototype of tcg_out_label. There was also a cast to long. For most hosts with sizeof(long) == sizeof(tcg_target_long) == sizeof(void *) this did not matter, but for w64 it was wrong. This is fixed now. Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-11configure: Test for libiberty.a (mingw32)Stefan Weil1-1/+7
MinGW-w64 and some versions of MinGW32 don't provide libiberty.a, so add this library only if it was found. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-11w64: Don't redefine lseek, ftruncateStefan Weil1-2/+6
MinGW-w64 already defines lseek and ftruncate (and uses the 64 bit variants). The conditional compilation avoids redefinitions (which would be wrong) and compiler warnings. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-11cache-utils: Add missing include file for uintptr_tStefan Weil1-0/+3
Commit 021ecd8b9db37927059f5d3234b51ed766706437 breaks the build for PPC hosts because it uses uintptr_t without the necessary include file. uintptr_t is defined in stdint.h, so add this include. Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-11build: Include config-host.mak as soon as possibleLluís Vilanova1-7/+8
Current code depends on variables defined in config-host.mak before it is actually included. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Cc: Anthony Liguori <aliguori@us.ibm.com> Cc: Paul Brook <paul@codesourcery.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-11gdbstub: Do not kill target in system emulation modeJan Kiszka1-0/+2
Too many VM kittens were killed since 7d03f82f81. Another one just died under my fat fingers. When you quit a kgdb session, does the Linux kernel power off? Or when you terminate gdb attached to a hardware debugger, does your board vanish in space? No. So let's stop terminating QEMU when the gdbstub receives a kill commando in system emulation mode. Real termination can still be achieved via "monitor quit". We keep the behavior for user mode emulation which is arguably more like a gdbserver scenario. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-11target-i386: Mask NX bit from cpu_get_phys_page_debug resultJan Kiszka2-6/+8
This was a long pending bug, now revealed by the assert in phys_page_find that stumbled over the large page index returned by cpu_get_phys_page_debug for NX-marked pages: We need to mask out NX and all user-definable bits 52..62 from PDEs and the final PTE to avoid corrupting physical addresses. Reviewed-by: Avi Kivity <avi@redhat.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-09Merge remote-tracking branch 'stefanha/trivial-patches' into stagingAnthony Liguori17-58/+45
* stefanha/trivial-patches: configure: Quote the configure args printed in config.log osdep: Remove local definition of macro offsetof libcacard: Spelling and grammar fixes in documentation Spelling fixes in comments (it's -> its) vnc: Add break statement libcacard: Use format specifier %u instead of %d for unsigned values Fix sign of sscanf format specifiers block/vmdk: Fix warning from splint (comparision of unsigned value) qmp: Fix spelling fourty -> forty qom: Fix spelling in documentation sh7750: Remove redundant 'struct' from MemoryRegionOps
2012-03-09Merge remote-tracking branch 'qemu-kvm/uq/master' into stagingAnthony Liguori12-242/+742
* qemu-kvm/uq/master: kvm: fill in padding to help valgrind kvm: x86: Add user space part for in-kernel i8254 kvm: Add kvm_has_pit_state2 helper i8254: Open-code timer restore i8254: Factor out base class for KVM reuse
2012-03-09Merge remote-tracking branch 'kraxel/usb.42' into stagingAnthony Liguori8-143/+203
* kraxel/usb.42: xhci: fix port status xhci: fix control xfers usb: add shortcut for control transfers usb-host: enable pipelineing for bulk endpoints. usb: add pipelining option to usb endpoints usb: queue can have async packets uhci_fill_queue: zap debug printf usb: add USB_RET_IOERROR usb: return BABBLE rather then NAK when we receive too much data usb-ehci: Cleanup itd error handling usb-ehci: Fix and simplify nakcnt handling usb-ehci: Remove dead nakcnt code usb-ehci: Fix cerr tracking usb-ehci: Any packet completion except for NAK should set the interrupt usb-ehci: Rip the queues when the async or period schedule is halted usb-ehci: Drop cached qhs when the doorbell gets rung usb-ehci: always call ehci_queues_rip_unused for period queues usb-ehci: split our qh queue into async and periodic queues usb-ehci: Never follow table entries with the T-bit set usb-redir: Set ep type and interface
2012-03-09libcacard: Fix compilation with gcc-4.7Hans de Goede1-2/+2
VCARD_ATR_PREFIX is used as part of an array initializer so it should not have () around it, so far this happened to work, but gcc-4.7 does not like it. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-09xilinx_zynq: fix the buildAnthony Liguori1-2/+2
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-08configure: Quote the configure args printed in config.logPeter Maydell1-1/+3
Use the same mechanism we use for printing the configure command line to config-host.mak to print it to config.log. This fixes a bug where the config.log version didn't quote arguments with spaces. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-08osdep: Remove local definition of macro offsetofStefan Weil2-17/+0
The macro offsetof is defined in stddef.h. It is conforming to the standards C89, C99 and POSIX.1-2001 (see man page), so it is a sufficiently old standard. Therefore chances are very high that QEMU never needs a local definition of this macro. osdep.h already includes stddef.h, so this patch simply removes the unneeded code from the files configure and osdep.h. If we ever need the local definition again, it should be added to compiler.h (the macro is usually provided with the compiler, it is not OS specific). Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-08libcacard: Spelling and grammar fixes in documentationStefan Weil1-13/+13
* it's -> its * it's -> it is (that's no fix, but makes future checks easier) * this functions -> this function * replacable -> replaceable * reader's -> readers * logins into -> logs into v2: Also replace 'aid' by 'AID' (thanks to Peter Maydell for this hint). v3: Fix sentence (contributed by Alon Levy / Robert Relyea). Cc: Alon Levy <alevy@redhat.com> Cc: Robert Relyea <rrelyea@redhat.com> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-08Spelling fixes in comments (it's -> its)Stefan Weil9-10/+10
* it's -> its (fixed for all files) * dont -> don't (only fixed in a line which was touched by the previous fix) * distrub -> disturb (fixed in the same line) Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-08vnc: Add break statementStefan Weil1-0/+1
This was not a bug, but it is not common practice to omit the break statement from the last case statement before an empty default case. Any change of the default case would introduce a bug. This was reported as a warning by splint. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-08libcacard: Use format specifier %u instead of %d for unsigned valuesStefan Weil1-10/+10
splint reported warnings for those code statements. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-07Fix sign of sscanf format specifiersStefan Weil1-1/+2
All values read by sscanf are unsigned, so replace %d by %u. This signed / unsigned mismatch was detected by splint. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-07block/vmdk: Fix warning from splint (comparision of unsigned value)Stefan Weil1-1/+1
l1_entry_sectors will never be less than 0. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-07qmp: Fix spelling fourty -> fortyStefan Weil1-2/+2
This was found by codespell. Signed-off-by: Stefan Weil <sw@weilnetz.de> Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-07qom: Fix spelling in documentationStefan Weil1-1/+1
This fixes a new spelling issue which was detected by codespell. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-07sh7750: Remove redundant 'struct' from MemoryRegionOpsStefan Weil2-2/+2
The 'struct' is not needed, and all other MemoryRegionOps don't use it. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-07xhci: fix port statusGerd Hoffmann1-1/+1
Don't signal port status change if the usb device isn't in attached state. Happens with usb-host devices with the pass-through device being plugged out at the host. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07xhci: fix control xfersGerd Hoffmann1-8/+5
Use the new, direct control transfer submission method instead of bypassing the usb core by calling usb_device_handle_control directly. The later fails for async control transfers. This patch gets xhci + usb-host combo going.
2012-03-07usb: add shortcut for control transfersGerd Hoffmann2-0/+60
Add a more direct code path to submit control transfers. Instead of feeding three usb packets (setup, data, ack) to usb_handle_packet and have the do_token_* functions in usb.c poke the control transfer parameters out of it just submit a single packet carrying the actual data with the control xfer parameters filled into USBPacket->parameters. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-host: enable pipelineing for bulk endpoints.Gerd Hoffmann1-0/+3
We really don't want to wait for packets finish before submitting the next, we want keep the data flow running. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb: add pipelining option to usb endpointsGerd Hoffmann2-1/+12
With this patch applied USB drivers can enable pipelining per endpoint. With pipelining enabled the usb core will continue submitting packets even when there are still async transfers in flight instead of passing them on one by one. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb: queue can have async packetsGerd Hoffmann1-0/+3
This can happen today in case the ->complete() callback queues up the next packet. Also we'll support pipelining soon, which allows to have multiple packets per queue in flight (aka ASYNC) state. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07uhci_fill_queue: zap debug printfGerd Hoffmann1-1/+0
2012-03-07usb: add USB_RET_IOERRORHans de Goede6-10/+19
We already have USB_RET_NAK, but that means that a device does not want to send/receive right now. But with host / network redirection we can actually have a transaction fail due to some io error, rather then ie the device just not having any data atm. This patch adds a new error code named USB_RET_IOERROR for this, and uses it were appropriate. Notes: -Currently all usb-controllers handle this the same as NODEV, but that may change in the future, OHCI could indicate a CRC error instead for example. -This patch does not touch hw/usb-musb.c, that is because the code in there handles STALL and NAK specially and has a if status < 0 generic catch all for all other errors Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb: return BABBLE rather then NAK when we receive too much dataHans de Goede2-3/+9
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: Cleanup itd error handlingHans de Goede1-14/+14
All error statuses except for NAK are handled in a switch case, move the handling of NAK into the same switch case. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: Fix and simplify nakcnt handlingHans de Goede1-28/+4
The nakcnt code in ehci_execute_complete() marked transactions as finished when a packet completed with a result of USB_RET_NAK, but USB_RET_NAK means that the device cannot receive / send data at that time and that the transaction should be retried later, which is also what the usb-uhci and usb-ohci code does. Note that there already was some special code in place to handle this for interrupt endpoints in the form of doing a return from ehci_execute_complete() when reload == 0, but that for bulk transactions this was not handled correctly (where as for example the usb-ccid device does return USB_RET_NAK for bulk packets). Besides that the code in ehci_execute_complete() decrement nakcnt by 1 on a packet result of USB_RET_NAK, but -since the transaction got marked as finished, nakcnt would never be decremented again -there is no code checking for nakcnt becoming 0 -there is no use in re-trying the transaction within the same usb frame / usb-ehci frame-timer call, since the status of emulated devices won't change as long as the usb-ehci frame-timer is running So we should simply set the nakcnt to 0 when we get a USB_RET_NAK, thus claiming that we've tried reload times (or as many times as possible if reload is 0). Besides the code in ehci_execute_complete() handling USB_RET_NAK there was also code handling it in ehci_state_executing(), which calls ehci_execute_complete(), and then does its own handling on top of the handling in ehci_execute_complete(), this code would decrement nakcnt *again* (if not already 0), or restore the reload value (which was never changed) on success. Since the double decrement was wrong to begin with, and is no longer needed now that we set nakcnt directly to 0 on USB_RET_NAK, and the restore of reload is not needed either, this patch simply removes all nakcnt handling from ehci_state_executing(). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: Remove dead nakcnt codeHans de Goede1-20/+0
This patch removes 2 bits of dead nakcnt code: 1) usb_ehci_execute calls ehci_qh_do_overlay which does: nakcnt = reload; and then has a block of code which is conditional on: if (reload && !nakcnt) { which ofcourse is never true now as nakcnt == reload. 2) ehci_state_fetchqh does: nakcnt = reload; but before nakcnt is ever used ehci_state_fetchqh is always followed by a ehci_qh_do_overlay call which also does: nakcnt = reload; So doing this from ehci_state_fetchqh is redundant. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: Fix cerr trackingHans de Goede1-13/+6
cerr should only be decremented on errors which cause XactErr to be set, and when that happens the failing transaction should be retried until cerr reaches 0 and only then should USBSTS_ERRINT be set (and inactive cleared and USBSTS_INT set if requested). Since we don't have any hardware level errors (and in case of redirection the real hardware has already retried), re-trying makes no sense, so immediately set cerr to 0 on errors which set XactErr. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: Any packet completion except for NAK should set the interruptHans de Goede1-1/+1
As clearly stated in the 2.3.2 of the EHCI spec, any time USBERRINT get sets then if the td has its IOC bit set USBINT should be set as well. This means that for any status except for USB_RET_NAK we should set USBINT if the IOC bit is set. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: Rip the queues when the async or period schedule is haltedHans de Goede1-1/+4
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: Drop cached qhs when the doorbell gets rungHans de Goede1-16/+17
The purpose of the IAAD bit / the doorbell is to make the ehci controller forget about cached qhs, this is mainly used when cancelling transactions, the qh is unlinked from the async schedule and then the doorbell gets rung, once the doorbell is acked by the controller the hcd knows that the qh is no longer in use and that it can do something else with the memory, such as re-use it for a new qh! But we keep our struct representing this qh around for circa 250 ms. This allows for a (mightily large) race window where the following could happen: -hcd submits a qh at address 0xdeadbeef -our ehci code sees the qh, sends a request to a usb-device, gets a result of USB_RET_ASYNC, sets the async_state of the qh to EHCI_ASYNC_INFLIGHT -hcd unlinks the qh at address 0xdeadbeef -hcd rings the doorbell, wait for us to ack it -hcd re-uses the qh at address 0xdeadbeef -our ehci code sees the qh, looks in the async_queue, sees there already is a qh at address 0xdeadbeef there with async_state of EHCI_ASYNC_INFLIGHT, does nothing -the *original* (which the hcd thinks it has cancelled) transaction finishes -our ehci code sees the qh on yet another pass through the async list, looks in the async_queue, sees there already is a qh at address 0xdeadbeef there with async_state of EHCI_ASYNC_COMPLETED, and finished the transaction with the results of the *original* transaction. Not good (tm), this patch fixes this race by removing all qhs which have not been seen during the last cycle through the async list immidiately when the doorbell is rung. Note this patch does not fix any actually observed problem, but upon reading of the EHCI spec it became apparent to me that the above race could happen and the usb-ehci behavior from before this patch is not good. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: always call ehci_queues_rip_unused for period queuesHans de Goede1-0/+1
Before this patch USB 2 devices with interrupt endpoints were not working properly. The problem is that to avoid loops we stop processing as soon as we encounter a queue-head (qh) we've already seen since qhs can be linked in a circular fashion, this is tracked by the seen flag in our qh struct. The resetting of the seen flag is done from ehci_queues_rip_unused which before this patch was only called when executing the statemachine for the async schedule. But packets for interrupt endpoints are part of the periodic schedule! So what would happen is that when there were no ctrl or bulk packets for a USB 2 device with an interrupt endpoint, the async schedule would become non active, then ehci_queues_rip_unused would no longer get called and when processing the qhs for the interrupt endpoints from the periodic schedule their seen bit would still be 1 and they would be skipped. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: split our qh queue into async and periodic queuesHans de Goede1-25/+37
qhs can be part of both the async and the periodic schedule, as is shown in later patches in this series it is useful to keep track of the qhs on a per schedule basis. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-ehci: Never follow table entries with the T-bit setHans de Goede1-6/+4
Before this patch the T-bit was not checked in 2 places, while it should be. Once we properly check the T-bit everywhere we no longer need the weird entry < 0x1000 and entry > 0x1000 checks, so this patch removes them. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07usb-redir: Set ep type and interfaceHans de Goede1-0/+8
Since we don't use usb_desc.c we need to do this ourselves. This fixes iso transfers no longer working for USB 2 devices due to the ep->type check in ehci.c Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-07kvm: fill in padding to help valgrindMichael S. Tsirkin2-0/+8
valgrind warns about padding fields which are passed to vcpu ioctls uninitialized. This is not an error in practice because kvm ignored padding. Since the ioctls in question are off data path and the cost is zero anyway, initialize padding to 0 to suppress these errors. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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