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* target/s390x: move kvm files into kvm/Cho, Yu-Chen2021-07-071-1/+1
| | | | | | | | | | | | | | | move kvm files into kvm/ After the reshuffling, update MAINTAINERS accordingly. Make use of the new directory: target/s390x/kvm/ Signed-off-by: Claudio Fontana <cfontana@suse.de> Signed-off-by: Cho, Yu-Chen <acho@suse.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210707105324.23400-14-acho@suse.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* target/s390x: start moving TCG-only code to tcg/Cho, Yu-Chen2021-07-071-1/+1
| | | | | | | | | | | | | | | | | | | move everything related to translate, as well as HELPER code in tcg/ mmu_helper.c stays put for now, as it contains both TCG and KVM code. After the reshuffling, update MAINTAINERS accordingly. Make use of the new directory: target/s390x/tcg/ Signed-off-by: Claudio Fontana <cfontana@suse.de> Signed-off-by: Cho, Yu-Chen <acho@suse.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210707105324.23400-8-acho@suse.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* target/s390x: rename internal.h to s390x-internal.hCho, Yu-Chen2021-07-071-1/+1
| | | | | | | | | | | | | The internal.h file is renamed to s390x-internal.h, because of the risk of collision with other files with the same name. Signed-off-by: Claudio Fontana <cfontana@suse.de> Signed-off-by: Cho, Yu-Chen <acho@suse.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210707105324.23400-7-acho@suse.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* hw: Do not include qemu/log.h if it is not necessaryThomas Huth2021-05-021-1/+0Star
| | | | | | | | | | Many files include qemu/log.h without needing it. Remove the superfluous include statements. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20210328054833.2351597-1-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* target/s390x: Remove ilen argument from trigger_pgm_exceptionRichard Henderson2019-10-091-5/+2Star
| | | | | | | | | | | All but one caller passes ILEN_UNWIND, which is not stored. For the one use case in s390_cpu_tlb_fill, set int_pgm_ilen directly, simply to avoid the assert within do_program_interrupt. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-18-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
* target/s390x: Remove ilen parameter from s390_program_interruptRichard Henderson2019-10-091-2/+1Star
| | | | | | | | | | This is no longer used, and many of the existing uses -- particularly within hw/s390x -- seem questionable. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-4-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
* target/s390x: Remove ilen parameter from tcg_s390_program_interruptRichard Henderson2019-10-091-1/+1
| | | | | | | | | | Since we begin the operation with an unwind, we have the proper value of ilen immediately available. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-3-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
* target/s390x: Add ilen to unwind dataRichard Henderson2019-10-091-1/+4
| | | | | | | | | | Use ILEN_UNWIND to signal that we have in fact that cpu_restore_state will have been called by the time we arrive in do_program_interrupt. Signed-off-by: Richard Henderson <rth@twiddle.net> Message-Id: <20191001171614.8405-2-richard.henderson@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
* qemu-common: Move tcg_enabled() etc. to sysemu/tcg.hMarkus Armbruster2019-06-111-0/+1
| | | | | | | | | | | | | | | | | | | Other accelerators have their own headers: sysemu/hax.h, sysemu/hvf.h, sysemu/kvm.h, sysemu/whpx.h. Only tcg_enabled() & friends sit in qemu-common.h. This necessitates inclusion of qemu-common.h into headers, which is against the rules spelled out in qemu-common.h's file comment. Move tcg_enabled() & friends into their own header sysemu/tcg.h, and adjust #include directives. Cc: Richard Henderson <rth@twiddle.net> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-2-armbru@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> [Rebased with conflicts resolved automatically, except for accel/tcg/tcg-all.c]
* target/s390x: Use env_cpu, env_archcpuRichard Henderson2019-06-101-4/+2Star
| | | | | | | | | | | Cleanup in the boilerplate that each target must define. Replace s390_env_get_cpu with env_archcpu. The combination CPU(s390_env_get_cpu) should have used ENV_GET_CPU to begin; use env_cpu now. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* s390x: move tcg_s390_program_interrupt() into TCG code and mark it noreturnDavid Hildenbrand2018-10-041-14/+1Star
| | | | | | | | | | | | | | Move it into TCG-only code and provide a stub. Turn it into noreturn. As Richard noted, we currently don't log the psw.addr before restoring the state, fix that by moving (duplicating) the qemu_log_mask in the tcg/kvm handlers. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180927130303.12236-2-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/flic: cache the common flic class in a central functionDavid Hildenbrand2018-02-091-3/+3
| | | | | | | | This avoids tons of conversions when handling interrupts. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180129125623.21729-19-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: cache the qemu flic in a central functionDavid Hildenbrand2018-02-091-3/+3
| | | | | | | | This avoids tons of conversions when handling interrupts. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180129125623.21729-17-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/flic: make floating interrupts on TCG actually floatingDavid Hildenbrand2018-02-091-46/+6Star
| | | | | | | | | | | Move floating interrupt handling into the flic. Floating interrupts will now be considered by all CPUs, not just CPU #0. While at it, convert I/O interrupts to use a list and make sure we properly consider I/O sub-classes in s390_cpu_has_io_int(). Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180129125623.21729-9-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/flic: factor out injection of floating interruptsDavid Hildenbrand2018-02-091-25/+17Star
| | | | | | | | | | | | | Let the flic device handle it internally. This will allow us to later on store floating interrupts in the flic for the TCG case. This now also simplifies kvm.c. All that's left is the fallback interface for floating interrupts, which is now triggered directly via the flic in case anything goes wrong. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180129125623.21729-6-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: simplify machine check handlingDavid Hildenbrand2018-02-091-11/+7Star
| | | | | | | | | | | | | | | | | | | | | | We currently only support CRW machine checks. This is a preparation for real floating interrupt support. Get rid of the queue and handle it via the bit INTERRUPT_MCHK. We don't rename it for now, as it will be soon gone (when moving crw machine checks into the flic). Please note that this is the same way also KVM handles it: only one instance of a machine check can be pending at a time. So no need for a queue. While at it, make sure we try to deliver only if env->cregs[14] actually indicates that CRWs are accepted. Drop two unused defines on the way (we already have PSW_MASK_...). Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180129125623.21729-5-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: drop program_interrupt()David Hildenbrand2017-12-141-17/+5Star
| | | | | | | | | | | | All users are gone, we can finally drop it and make sure that all new program interrupt injections are reminded of the retaddr - as they have to use s390_program_interrupt() now. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20171130162744.25442-16-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: introduce and use s390_program_interrupt()David Hildenbrand2017-12-141-0/+13
| | | | | | | | | | | | | | | | | Allows to easily convert more callers of program_interrupt() and to easily introduce new exceptions without forgetting about the cpu state reset. Use s390_program_interrupt() in places where we already had the same pattern. We will later get rid of program_interrupt(). RA != 0 checks are already done behind the scenes. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20171130162744.25442-2-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: implement STOP and RESET interrupts for TCGDavid Hildenbrand2017-10-201-5/+27
| | | | | | | | | | | | | | | | | | | Implement them like KVM implements/handles them. Both can only be triggered via SIGP instructions. RESET has (almost) the lowest priority if the CPU is running, and the highest if the CPU is STOPPED. This is handled in SIGP code already. On delivery, we only have to care about the "CPU running" scenario. STOP is defined to be delivered after all other interrupts have been delivered. Therefore it has the actual lowest priority. As both can wake up a CPU if sleeping, indicate them correctly to external code (e.g. cpu_has_work()). Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170928203708.9376-25-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/kvm: generalize SIGP stop and restart interrupt injectionDavid Hildenbrand2017-10-201-0/+20
| | | | | | | | | Preparation for factoring it out into !kvm code. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170928203708.9376-13-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: take care of external interrupt subclassesDavid Hildenbrand2017-10-201-1/+31
| | | | | | | | | | | We can now let go of INTERRUPT_EXT. When cr0 changes, we have to revalidate if we now have a pending external interrupt, just like when the PSW (or SYSTEM MASK only) changes. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170928203708.9376-6-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: rework checking for deliverable interruptsDavid Hildenbrand2017-10-201-0/+46
| | | | | | | | | | | | | Currently, enabling/disabling of interrupts is not really supported. Let's improve interrupt handling code by explicitly checking for deliverable interrupts only. This is the first step. Checking for external interrupt subclasses will be done next. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170928203708.9376-5-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: injection of emergency signals and external callsDavid Hildenbrand2017-10-201-0/+26
| | | | | | | | | | | | Preparation for new TCG SIGP code. Especially also prepare for indicating that another external call is already pending. Take care of interrupt priority. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170928203708.9376-4-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: cleanup service interrupt injectionDavid Hildenbrand2017-10-201-14/+4Star
| | | | | | | | | | | | | | | There are still some leftovers from old virtio interrupts in there. Most importantly, we don't have to queue service interrupts anymore. Just like KVM, we can simply multiplex the SCLP service interrupts and avoid the queue. Also, now only valid parameters/cpu_addr will be stored on service interrupts. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170928203708.9376-3-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/tcg: turn INTERRUPT_EXT into a maskDavid Hildenbrand2017-10-201-1/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | External interrupts are currently all handled like floating external interrupts, they are queued. Let's prepare for a split of floating and local interrupts by turning INTERRUPT_EXT into a mask. While we can have various floating external interrupts of one kind, there is usually only one (or a fixed number) of the local external interrupts. So turn INTERRUPT_EXT into a mask and properly indicate the kind of external interrupt. Floating interrupts will have to moved out of one CPU instance later once we have SMP support. The only floating external interrupts used right now are SERVICE interrupts, so let's use that name. Following patches will clean up SERVICE interrupt injection. This get's rid of the ugly special handling for cpu timer and clock comparator interrupts. And we really only store the parameters as defined by the PoP. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170928203708.9376-2-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* s390x/kvm: move KVM declarations and stubs to separate filesDavid Hildenbrand2017-08-301-0/+1
| | | | | | | | | | | | | | | Let's do it just like the other architectures. Introduce kvm-stub.c for stubs and kvm_s390x.h for the declarations. Change license to GPL2+ and keep copyright notice. As we are dropping the sysemu/kvm.h include from cpu.h, fix up includes. Suggested-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170818114353.13455-18-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* target/s390x: introduce internal.hDavid Hildenbrand2017-08-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | cpu.h should only contain what really has to be accessed outside of target/s390x/. Add internal.h which can only be used inside target/s390x/. Move everything that isn't fast enough to run away and restructure it right away. We'll move all kvm_* stuff later. Minor style fixes to avoid checkpatch warning to: - struct Lowcore: "{" goes into same line as typedef - struct LowCore: add spaces around "-" in array length calculations - time2tod() and tod2time(): move "{" to separate line - get_per_atmid(): add space between ")" and "?". Move cases by one char. - get_per_atmid(): drop extra paremthesis around (1 << 6) Change license of new file to GPL2+ and keep copyright notice. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170818114353.13455-15-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* target/s390x: Rework program_interrupt() and related functionsThomas Huth2017-07-251-0/+39
| | | | | | | | | | | | | | misc_helper.c won't be compiled with --disable-tcg anymore, but we still need the program_interrupt() function in that case. Move it to interrupt.c instead, and refactor it to re-use the code from trigger_pgm_exception() (for TCG) and enter_pgmcheck() (for KVM, which now got renamed to kvm_s390_program_interrupt() for clarity). Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1500886370-14572-4-git-send-email-thuth@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
* Move target-* CPU file into a target/ folderThomas Huth2016-12-201-0/+120
We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part] Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part] Acked-by: Michael Walle <michael@walle.cc> [lm32 part] Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part] Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part] Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part] Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part] Acked-by: Richard Henderson <rth@twiddle.net> [alpha part] Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part] Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>
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