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2014-05-13cpu: make CPU_INTERRUPT_RESET available on all targetsPaolo Bonzini
On the x86, some devices need access to the CPU reset pin (INIT#). Provide a generic service to do this, using one of the internal cpu_interrupt targets. Generalize the PPC-specific code for CPU_INTERRUPT_RESET to other targets. Since PPC does not support migration across QEMU versions (its machine types are not versioned yet), I picked the value that is used on x86, CPU_INTERRUPT_TGT_INT_1. Consequently, TGT_INT_2 and TGT_INT_3 are shifted down by one while keeping their value. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-13kvm: reset state from the CPU's reset methodPaolo Bonzini
Now that we have a CPU object with a reset method, it is better to keep the KVM reset close to the CPU reset. Using qemu_register_reset as we do now keeps them far apart. With this patch, PPC no longer calls the kvm_arch_ function, so it can get removed there. Other arches call it from their CPU reset handler, and the function gets an ARMCPU/X86CPU/S390CPU. Note that ARM- and s390-specific functions are called kvm_arm_* and kvm_s390_*, while x86-specific functions are called kvm_arch_*. That follows the convention used by the different architectures. Changing that is the topic of a separate patch. Reviewed-by: Gleb Natapov <gnatapov@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-04-30ppc: use kvm_vcpu_enable_cap()Cornelia Huck
Convert existing users of KVM_ENABLE_CAP to new helper. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-04-08PPC: Add l1 cache sizes for 970 and above systemsAlexander Graf
Book3s_64 guests expect the L1 cache size in device tree, so let's give them proper values for all CPU types we support. This fixes a "not compliant" warning with sles11 guests on -M pseries for me. Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08PPC: Only enter MSR_POW when no interrupts pendingAlexander Graf
We were entering the power saving state even when interrupts (like an external interrupt or a decrementer interrupt) were still in flight. In case we find a pending interrupt, don't enter power saving state. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Tom Musta <tmusta@gmail.com>
2014-04-08PPC: Clean up DECR implementationAlexander Graf
There are 3 different variants of the decrementor for BookE and BookS. The BookE variant sets TSR[DIS] to 1 when the DEC value becomes 1 or 0. TSR[DIS] is then the indicator whether the decrementor interrupt line is asserted or not. The old BookS variant treats DEC as an edge interrupt that gets triggered when the DEC value's top bit turns 1 from 0. The new BookS variant maintains the assertion bit inside DEC itself. Whenever the DEC value becomes negative (top bit set) the DEC interrupt line is asserted. So far we implemented mostly the old BookS variant. Let's do them all properly. This fixes booting pseries ppc64 guest images in TCG mode for me. Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08target-ppc: Correct VSX Integer to FP ConversionTom Musta
This patch corrects the VSX integer to floating point conversion instructions by using the endian correct accessors. The auxiliary "j" index used by the existing macros is now obsolete and is removed. The JOFFSET preprocessor macro is also obsolete and removed. Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08target-ppc: Correct VSX FP to Integer ConversionTom Musta
This patch corrects the VSX floating point to integer conversion instructions by using the endian correct accessors. The auxiliary "j" index used by the existing macros is now obsolete and is removed. Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08target-ppc: Correct VSX FP to FP ConversionsTom Musta
This change corrects the VSX double precision to single precision and single precision to double precisions conversion routines. The endian correct accessors are now used. The auxiliary "j" index is no longer necessary and is eliminated. Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08target-ppc: Correct VSX Scalar ComparesTom Musta
This change fixes the VSX scalar compare instructions. The existing usage of "x.f64[0]" is changed to "x.VsrD(0)". Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08target-ppc: Correct Simple VSR LE Host InversionsTom Musta
A common pattern in the VSX helper code macros is the use of "x.fld[i]" where "x" is a VSR and "fld" is an argument to a macro ("f64" or "f32" is passed). This is not always correct on LE hosts. This change addresses all instances of this pattern to be "x.fld" where "fld" is: - "VsrD(0)" for scalar instructions accessing 64-bit numbers - "VsrD(i)" for vector instructions accessing 64-bit numbers - "VsrW(i)" for vector instructions accessing 32-bit numbers Note that there are no instances of this pattern where a scalar instruction accesses a 32-bit number. Note also that it would be correct to use "VsrD(i)" for scalar instructions since the loop index is only ever "0". I have choosen to use "VsrD(0)" instead ... it seems a little clearer. Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08target-ppc: Correct LE Host Inversion of Lower VSRsTom Musta
This change properly orders the doublewords of the VSRs 0-31. Because these registers are constructed from separate doublewords, they must be inverted on Little Endian hosts. The inversion is performed both when the VSR is read and when it is written. Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08target-ppc: Define Endian-Correct Accessors for VSR Field AccessTom Musta
This change defines accessors for VSR doubleword and word fields that are correct from a host Endian perspective. This allows code to use the Power ISA indexing numbers in code. For example, the xscvdpsxws instruction has a target VSR that looks like this: 0 32 64 127 +-----------+--------+-----------+-----------+ | undefined | SW | undefined | undefined | +-----------+--------+-----------+-----------+ VSX helper code will use VsrW(1) to access this field. Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-08target-ppc: Bug: VSX Convert to Integer Should TruncateTom Musta
The various VSX Convert to Integer instructions should truncate the floating point number to an integer value, which is equivalent to a round-to-zero rounding mode. The existing VSX floating point to integer conversion helpers are erroneously using the rounding mode set int the PowerPC Floating Point Status and Control Register (FPSCR). This change corrects this defect by using the appropriate float*_to_*_round_to_zero() routines fro the softfloat library. Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-27target-ppc: MSR_POW not supported on POWER7/7+/8Anton Blanchard
Remove MSR_POW from the msr_mask for POWER7/7P/8. Signed-off-by: Anton Blanchard <anton@samba.org> Reviewed-by: Cédric Le Goater <clg@fr.ibm.com> Tested-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-27target-ppc: POWER7+ supports the MSR_VSX bitAnton Blanchard
Without MSR_VSX we die early during a Linux boot. Signed-off-by: Anton Blanchard <anton@samba.org> Reviewed-by: Cédric Le Goater <clg@fr.ibm.com> Tested-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-27target-ppc: POWER8 supports iselAnton Blanchard
Add PPC_ISEL to insns_flags. Signed-off-by: Anton Blanchard <anton@samba.org> Reviewed-by: Cédric Le Goater <clg@fr.ibm.com> Tested-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-27target-ppc: POWER8 supports the MSR_LE bitAnton Blanchard
Add MSR_LE to the msr_mask for POWER8. Signed-off-by: Anton Blanchard <anton@samba.org> Reviewed-by: Cédric Le Goater <clg@fr.ibm.com> Tested-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-20target-ppc: Introduce powerisa-207-server flagAlexey Kardashevskiy
This flag will be used to decide whether to emulate some bits of H_SET_MODE hypercall because some are POWER8-only. While we are here, add 2.05 flag to POWER8 family too. POWER7/7+ already have it. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-20target-ppc: Force CPU threads count to be a power of 2Bharata B Rao
PowerPC kernel expects the number of SMT threads in a core to be a power of 2. Since QEMU doesn't enforce this, it leads to an early guest kernel crash if invalid threads count is specified. Prevent this crash and make it a graceful exit from QEMU itself by validating the user-supplied threads count. Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stewart Smith <stewart@linux.vnet.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-20target-ppc: Fix overallocation of opcode tablesStuart Brady
create_new_table() should allocate 0x20 opc_handler_t pointers, but actually allocates 0x20 opc_handler_t structs. Fix this. Signed-off-by: Stuart Brady <sdb@zubnet.me.uk> Reviewed-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-20target-ppc: Reset SPRs on CPU resetAlexey Kardashevskiy
This resets SPR values to defaults on CPU reset. This should help with little-endian guests reboot issues. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-19target-ppc: Add missing 'static' and 'const' attributesStefan Weil
This fixes warnings from the static code analysis (smatch). Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-15misc: Fix typos in commentsStefan Weil
Codespell found and fixed these new typos: * doesnt -> doesn't * funtion -> function * perfomance -> performance * remaing -> remaining A coding style issue (line too long) was fixed manually. Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-03-13cputlb: Change tlb_set_page() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cputlb: Change tlb_flush() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cputlb: Change tlb_flush_page() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13exec: Change cpu_abort() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13target-ppc: Use PowerPCCPU in PowerPCCPUClass::handle_mmu_fault hookAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13translate-all: Change cpu_restore_state() argument to CPUStateAndreas Färber
This lets us drop some local variables in tlb_fill() functions. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu-exec: Change cpu_loop_exit() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13exec: Change tlb_fill() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move breakpoints field from CPU_COMMON to CPUStateAndreas Färber
Most targets were using offsetof(CPUFooState, breakpoints) to determine how much of CPUFooState to clear on reset. Use the next field after CPU_COMMON instead, if any, or sizeof(CPUFooState) otherwise. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move exception_index field from CPU_COMMON to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_handle_mmu_fault() into a CPUClass hookAndreas Färber
Note that while such functions may exist both for *-user and softmmu, only *-user uses the CPUState hook, while softmmu reuses the prototype for calling it directly. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Factor out cpu_generic_init()Andreas Färber
All targets using it gain the ability to set -cpu name,key=value,... options via the default TYPE_CPU CPUClass::parse_features() implementation. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_has_work() into a CPUClass hookAndreas Färber
Default to false. Tidy variable naming and inline cast uses while at it. Tested-by: Jia Liu <proljc@gmail.com> (or32) Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13target-ppc: Clean up ENV_GET_CPU() usageAndreas Färber
Commits fdfba1a298ae26dd44bcfdb0429314139a0bc55a, ab1da85791340e504d10487e1add81b9988afa98, f606604f1c10b60ef294f1b9b229426521a365e3 and 2c17449b3022ca9623c4a7e2a504a4150ac4ad30 added usages of ENV_GET_CPU() macro in target-specific code. Use ppc_env_get_cpu() instead. Cc: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-05target-ppc: spapr: e500: fix to use cpu_dt_idAlexey Kardashevskiy
This makes use of @cpu_dt_id and related API in: 1. emulated XICS hypercall handlers as they receive fixed CPU indexes; 2. XICS-KVM to enable in-kernel XICS on right CPU; 3. device-tree renderer. This removes @cpu_index fixup as @cpu_dt_id is used instead so QEMU monitor can accept command-line CPU indexes again. This changes kvm_arch_vcpu_id() to use ppc_get_vcpu_dt_id() as at the moment KVM CPU id and device tree ID are calculated using the same algorithm. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Acked-by: Mike Day <ncmike@ncultra.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: add PowerPCCPU::cpu_dt_idAlexey Kardashevskiy
Normally CPUState::cpu_index is used to pick the right CPU for various operations. However default consecutive numbering does not always work for POWERPC. These indexes are reflected in /proc/device-tree/cpus/PowerPC,POWER7@XX and used to call KVM VCPU's ioctls. In order to achieve this, kvmppc_fixup_cpu() was introduced. Roughly speaking, it multiplies cpu_index by the number of threads per core. This approach has disadvantages such as: 1. NUMA configuration stays broken after the fixup; 2. CPU-targeted commands from the QEMU Monitor do not work properly as CPU indexes have been fixed and there is no clear way for the user to know what the new CPU indexes are. This introduces a @cpu_dt_id field in the CPUPPCState struct which is initialized from @cpu_index by default and can be fixed later to meet the device tree requirements. This adds an API to handle @cpu_dt_id. This removes kvmppc_fixup_cpu() as it is not more needed, @cpu_dt_id is calculated in ppc_cpu_realize(). This will be used later in machine code. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Acked-by: Mike Day <ncmike@ncultra.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Update ppc_hash64_store_hpte to support updating in-kernel htabAneesh Kumar K.V
This support updating htab managed by the hypervisor. Currently we don't have any user for this feature. This actually bring the store_hpte interface in-line with the load_hpte one. We may want to use this when we want to emulate henter hcall in qemu for HV kvm. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> [ folded fix for the "warn_unused_result" build break in kvmppc_hash64_write_pte(), Greg Kurz <gkurz@linux.vnet.ibm.com> ] Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Change the hpte store APIAneesh Kumar K.V
For updating in kernel htab we need to provide both pte0 and pte1, hence update the interface to take pte0 and pte1 together Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> [ ldq_phys() API change, Greg Kurz <gkurz@linux.vnet.ibm.com> ] Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Fix page table lookup with kvm enabledAneesh Kumar K.V
With kvm enabled, we store the hash page table information in the hypervisor. Use ioctl to read the htab contents. Without this we get the below error when trying to read the guest address (gdb) x/10 do_fork 0xc000000000098660 <do_fork>: Cannot access memory at address 0xc000000000098660 (gdb) Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> [ fixes for 32 bit build (casts!), ldq_phys() API change, Greg Kurz <gkurz@linux.vnet.ibm.com ] Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Fix htab_mask calculationAneesh Kumar K.V
Correctly update the htab_mask using the return value of KVM_PPC_ALLOCATE_HTAB ioctl. Also we don't update sdr1 on GET_SREGS for HV. We check for external htab and if found true, we don't need to update sdr1 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> [ fixed pte group offset computation in ppc_hash64_htab_lookup() that caused TCG to fail, Greg Kurz <gkurz@linux.vnet.ibm.com> ] Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Use Additional Temporary in stqcx CaseTom Musta
Per Alex Graf's suggestion, the recently added case to gen_conditional_store for stqcx should use an additional temporary when accessing the second doubleword. This avoids the mutation of the EA argument to the function, which is counter intuitive. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Fix Compiler Warnings Due to 64-Bit Constants Declared as ULTom Musta
This patch fixes 64 bit constants that were erroneously declared as "ul" instead of "ull". The preferred form "ULL" is used. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc/translate.c: Use ULL suffix for 64 bit constantsPeter Maydell
64 bit constants need the "ULL" suffix, not just "UL", because on 32 bit platforms 'long' is not large enough and this will cause a compiler warning. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Altivec 2.07: Vector Permute and Exclusive ORTom Musta
This patch adds the Vector Permuate and Exclusive OR (vpermxor) instruction introduced in Power ISA Version 2.07. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Altivec 2.07: Vector SHA Sigma InstructionsTom Musta
This patch adds the Vector SHA Sigma instructions introduced in Power ISA Version 2.07: - Vector SHA-512 Sigma Doubleword (vshasigmad) - Vector SHA-256 Sigma Word (vshasigmaw) Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05target-ppc: Altivec 2.07: AES InstructionsTom Musta
This patch adds the Vector AES instructions introduced in Power ISA Version 2.07: - Vector AES Cipher (vcipher) - Vector AES Cipher Last (vcipherlast) - Vector AES Inverse Cipher (vncipher) - Vector AES Inverse Cipher Last (vncipherlast) - Vector AES SubBytes (vsbox) Note that the implementation of vncipher deviates from the RTL in ISA V2.07. However it does match the verbal description in the third paragraph. The RTL will be fixed in ISA V2.07B. The implementation here has been tested against actual P8 hardware. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>