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path: root/hw/mc146818rtc.c
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2012-09-10RTC: Remove the current_tm fieldPaolo Bonzini
This is not used anymore and only written to. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-10RTC: Get and set time without going through s->current_tmPaolo Bonzini
This patch makes rtc_set_time and rtc_set_cmos work without reading s->current_tm. In the case of rtc_set_time I introduce a new function that retrieves the time and stores into a given struct tm (not hard-coded to s->current_tm). In the case of rtc_set_cmos, the current time is similarly taken from a struct tm rather than s->current_tm. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-10RTC: Do not fire timer periodically to catch next alarmPaolo Bonzini
This patch limits further the usage of a periodic timer. It computes the time of the next alarm, and uses it to skip all intermediate occurrences of the timer. Cc: Yang Zhang <yang.z.zhang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-10RTC: Add divider reset supportYang Zhang
The first update cycle begins one-half seconds after divider reset is removed. This feature is useful for testing. Signed-off-by: Yang Zhang <yang.z.zhang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-10RTC: Update the RTC clock only when reading itYang Zhang
Calculate guest RTC based on the time of the last update, instead of using timers. The formula is (base_rtc + guest_time_now - guest_time_last_update + offset) Base_rtc is the RTC value when the RTC was last updated. Guest_time_now is the guest time when the access happens. Guest_time_last_update was the guest time when the RTC was last updated. Offset is used when divider reset happens or the set bit is toggled. The timer is kept in order to signal interrupts, but it only needs to run when either UF or AF is cleared. When the bits are both set, the timer does not run. UIP is now synthesized when reading register A. If the timer is not set, or if there is more than one second before it (as is the case at the end of this series), the leading edge of UIP is computed and the rising edge occurs 220us later. If the update timer occurs within one second, however, the rising edge of the AF and UF bits should coincide withe the falling edge of UIP. We do not know exactly when this will happen because there could be delays in the servicing of the timer. Hence, in this case reading register A only computes for the rising edge of UIP, and latches the bit until the timer is fired and clears it. Signed-off-by: Yang Zhang <yang.z.zhang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-10RTC: Update interrupt state when interrupts are masked/unmaskedYang Zhang
If an interrupt flag is already set when the interrupt becomes enabled, raise an interrupt immediately, and vice versa if interrupts become disabled. Signed-off-by: Yang Zhang <yang.z.zhang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-10RTC: introduce RTC_CLOCK_RATEPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-10RTC: Rename rtc_timer_updateYang Zhang
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-10RTC: Remove the logic to update time format when DM bit changedYang Zhang
Changing the DM (binary/BCD) and 24/12 control bit doesn't affect the internal registers. It only indicates what format is used for those registers. Signed-off-by: Yang Zhang <yang.z.zhang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-06-08qapi: Add Visitor interfaces for uint*_t and int*_tMichael Roth
This adds visitor interfaces for fixed-width integers types. Implementing these in visitors is optional, otherwise we fall back to visit_type_int() (int64_t) with some additional bounds checking to avoid integer overflows for cases where the value fetched exceeds the bounds of our target C type. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [LE: exclude negative values in uint*_t Visitor interfaces] Signed-off-by: Laszlo Ersek <lersek@redhat.com> [AF: Merged fix by Laszlo] Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-03-30rtc: split out macros into a header file and use in test caseAnthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-14hw/mc146818: Drop unneeded #includesAndreas Färber
pc.h and apic.h are not needed; apic.h would drag in x86 CPUState and is now included directly for TARGET_I386. isa.h is already #included from mc146818rtc.h. Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-01Merge remote-tracking branch 'qemu-kvm/uq/master' into stagingAnthony Liguori
* qemu-kvm/uq/master: pc-bios: update kvmvapic.bin kvmvapic: Use optionrom helpers optionsrom: Reserve space for checksum kvmvapic: Simplify mp/up_set_tpr kvmvapic: Introduce TPR access optimization for Windows guests kvmvapic: Add option ROM target-i386: Add infrastructure for reporting TPR MMIO accesses Allow to use pause_all_vcpus from VCPU context Process pending work while waiting for initial kick-off in TCG mode Remove useless casts from cpu iterators kvm: Set cpu_single_env only once kvm: Synchronize cpu state in kvm_arch_stop_on_emulation_error()
2012-02-24suspend: make rtc alarm wakeup the guest.Gerd Hoffmann
Make the rtc wake up the guest when the alarm fires. Add acpi windup to property support RTC_EN, so guests can enable and disable this. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24suspend: switch acpi s3 to new infrastructure.Gerd Hoffmann
This patch switches pc s3 suspend over to the new infrastructure. The cmos_s3 qemu_irq is killed, the new notifier is used instead. The xen hack goes away with that too, the hypercall can simply be done in a notifier function now. This patch also makes the guest actually stay suspended instead of leaving suspend instantly, so it is useful for more than just testing whenever the suspend/resume cycle actually works. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-18target-i386: Add infrastructure for reporting TPR MMIO accessesJan Kiszka
This will allow the APIC core to file a TPR access report. Depending on the accelerator and kernel irqchip mode, it will either be delivered right away or queued for later reporting. In TCG mode, we can restart the triggering instruction and can therefore forward the event directly. KVM does not allows us to restart, so we postpone the delivery of events recording in the user space APIC until the current instruction is completed. Note that KVM without in-kernel irqchip will report the address after the instruction that triggered the access. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-02-15qom: Unify type registrationAndreas Färber
Replace device_init() with generalized type_init(). While at it, unify naming convention: type_init([$prefix_]register_types) Also, type_init() is a function, so add preceding blank line where necessary and don't put a semicolon after the closing brace. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Anthony Liguori <anthony@codemonkey.ws> Cc: malc <av1474@comtv.ru> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qom: move properties from qdev to objectAnthony Liguori
This is mostly code movement although not entirely. This makes properties part of the Object base class which means that we can now start using Object in a meaningful way outside of qdev. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: register all types natively through QEMU Object ModelAnthony Liguori
This was done in a mostly automated fashion. I did it in three steps and then rebased it into a single step which avoids repeatedly touching every file in the tree. The first step was a sed-based addition of the parent type to the subclass registration functions. The second step was another sed-based removal of subclass registration functions while also adding virtual functions from the base class into a class_init function as appropriate. Finally, a python script was used to convert the DeviceInfo structures and qdev_register_subclass functions to TypeInfo structures, class_init functions, and type_register_static calls. We are almost fully converted to QOM after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-01mc146818rtc: Use lost_tick_policy propertyJan Kiszka
Allow to configure the MC146818 RTC via the new lost tick policy property and replace rtc_td_hack with this mechanism. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27isa: pic: convert to QEMU Object ModelAnthony Liguori
This converts two devices at once because PIC subclasses ISA and converting subclasses independently is extremely hard. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-13rtc: clear non-PF bits when reinjecting on ackPaolo Bonzini
When an rtc interrupt is reinjected immediately after being acked, other interrupts should not be reinjected, so do clear their bits. Also, if the periodic interrupts have been disabled before acking, do not reinject, as the guest might get very confused! Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-13rtc: raise PF bit when the periodic timer triggers but PIE=0Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-13rtc: raise AF bit when the alarm is encountered but AIE=0Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-13rtc: fix 12-hour modePaolo Bonzini
Hours in 12-hour mode are in the 1-12 range, not 0-11. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-20isa: give ISABus/ISADevice to isa_create(), isa_bus_irqs() and isa_get_irq() ↵Hervé Poussineau
functions NULL is a valid bus/device, so there is no change in behaviour. Signed-off-by: Hervé Poussineau <hpoussin@reactos.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15rtc: add a dynamic property for retrieving the dateAnthony Liguori
This really shows the power of dynamic object properties compared to qdev static properties. This property represents a complex structure who's format is preserved over the wire. This is enabled by visitors. It also shows an entirely synthetic property that is not tied to device state. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-11rtc: Convert to isa_register_ioportRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-23mc146818rtc: Handle host clock resetsJan Kiszka
Make use of the new clock reset notifier to update the RTC whenever rtc_clock is the host clock and that happens to jump backward. This avoids that the RTC stalls for the period the host clock was set back. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-21change all other clock references to use nanosecond resolution accessorsPaolo Bonzini
This was done with: sed -i 's/qemu_get_clock\>/qemu_get_clock_ns/' \ $(git grep -l 'qemu_get_clock\>' ) sed -i 's/qemu_new_timer\>/qemu_new_timer_ns/' \ $(git grep -l 'qemu_new_timer\>' ) after checking that get_clock and new_timer never occur twice on the same line. There were no missed occurrences; however, even if there had been, they would have been caught by the compiler. There was exactly one false positive in qemu_run_timers: - current_time = qemu_get_clock (clock); + current_time = qemu_get_clock_ns (clock); which is of course not in this patch. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-01-29mc146818rtc: update registers after a format changeAurelien Jarno
For some unknown reason, the MIPS kernel briefly changes the RTC to binary mode during boot, switch back to BCD mode and read the time. As the registers are updated only every second, they may still be in the old format when they are read. This patch forces a register update immediately after a format change (BCD/binary or 12/24H). This avoid long fsck during boot due to time wrap. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-29mc146818rtc: constantifyAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-12-11Keep track of ISA ports ISA device is using in qdev.Gleb Natapov
Store all io ports used by device in ISADevice structure. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-07-06make rtc alatm workGleb Natapov
Convert alarm time from BCD if needed before comparing with current time. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-06-13hpet/rtc: Rework RTC IRQ replacement by HPETJan Kiszka
Allow the intercept the RTC IRQ for the HPET legacy mode. Then push routing to IRQ8 completely into the HPET. This allows to turn hpet_in_legacy_mode() into a private function. Furthermore, this stops the RTC from clearing IRQ8 even if the HPET is in control. This patch comes with a side effect: The RTC timers will no longer be stoppend when there is no IRQ consumer, possibly causing a minor performance degration. But as the guest may want to redirect the RTC to the SCI in that mode, it should normally disable unused IRQ source anyway. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-05-30mc146818rtc: improve debuggingBlue Swirl
Add a separate flag for debugging coalesced interrupts. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-05-15mc146818rtc: remove #ifdef DEBUG_CMOS.Isaku Yamahata
remove #ifdef DEBUG_CMOS by using macro. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-05-15rtc: make rtc_xxx accept/return ISADevice instead of RTCState.Isaku Yamahata
To match rtc_xxx with qdev, make rtc_xxx accept and return ISADevice instead of RTCState. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-05-15mc146818rtc: Register vmstate via qdevJan Kiszka
After defining the required alias ID, we can push vmstate registration of mc146818rtc to qdev. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-03-21Move x86 specific PC declarations to a separate fileBlue Swirl
x86 definitions (especially CPUState uses) prevent many files from being compiled within libhw. Move x86 specific declarations (APIC stuff) to a separate file. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-03-08QMP: Introduce RTC_CHANGE eventLuiz Capitulino
Emitted whenever the RTC time changes. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-20reduce number of reinjects on ACKGleb Natapov
Windows 7 BSODs under load with HAL_RTC_IRQF_WILL_NOT_CLEAR error. It happens here: hal!HalpRtcUnmaskClock: 8281b93a 8bff mov edi,edi 8281b93c 56 push esi 8281b93d 33f6 xor esi,esi 8281b93f 6a0c push 0Ch 8281b941 e8b2ffffff call hal!CMOS_READ (8281b8f8) 8281b946 84c0 test al,al 8281b948 7920 jns hal!HalpRtcUnmaskClock+0x30 (8281b96a) 8281b94a 6a0a push 0Ah 8281b94c 46 inc esi 8281b94d e854c8ffff call hal!KeStallExecutionProcessor (828181a6) 8281b952 83fe64 cmp esi,64h 8281b955 72e8 jb hal!HalpRtcUnmaskClock+0x5 (8281b93f) 8281b957 6a00 push 0 8281b959 6a00 push 0 8281b95b 6a00 push 0 8281b95d 680a010000 push 10Ah 8281b962 6a5c push 5Ch 8281b964 ff1500c38082 call dword ptr [hal!_imp__KeBugCheckEx (8280c300)] 8281b96a 5e pop esi 8281b96b c3 ret So it loops for 100(64h) times reading register C before BSOD. Lets reduce number of immediate reinjection well under this limit. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12fix rtc-td-hack on host without high-res timersGleb Natapov
On hosts without high-res timers it is impossible to inject rtc interrupt faster then 1kHz. Windows sometimes configures RTC to generate 1kHz interrupts, so we can't inject missed interrupts when running on such hosts. Always injecting an interrupt on REG_C read is also not an option since Windows wait for REG_C to become zero with interrupt disabled during boot. This patch uses mixed approach: accelerate timer + inject up to 1000 interrupts on REG_C read. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-22BCD cleanupPaul Brook
Combine multiple BCD implementations. Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-10-27mc146818rtc: remove rtc_mm_init()Juan Quintela
It was used for Acer Pica 61 emulation, removed in 2008 Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27mc146818rtc: fix indentationJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27mc146818rtc: port rtc to vmstateJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27mc145818rtc: fix saving of rtc-td hack properly upgrading the version numberJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-12TARGET_I386 is always defined if TARGET_X86_64 is definedJuan Quintela
Patchworks-ID: 35378 Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-07New qdev_init_nofail()Markus Armbruster
Like qdev_init(), but terminate program via hw_error() instead of returning an error value. Use it instead of qdev_init() where terminating the program on failure is okay, either because it's during machine construction, or because we know that failure can't happen. Because relying in the latter is somewhat unclean, and the former is not always obvious, it would be nice to go back to qdev_init() in the not-so-obvious cases, only with proper error handling. I'm leaving that for another day, because it involves making sure that error values are properly checked by all callers. Patchworks-ID: 35168 Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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