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| author | Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> | 2013-06-19 17:27:15 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2013-08-30 12:48:25 +0200 |
| commit | 268846ba93de2529630d623b6ded72cee1221106 (patch) | |
| tree | e1315fefaa27f40dbc08af86577d72308d85bb50 /target-s390x | |
| parent | 39fbc5c62ce83f34e7f5b62238305d83ce8b4489 (diff) | |
| download | qemu-268846ba93de2529630d623b6ded72cee1221106.zip qemu-268846ba93de2529630d623b6ded72cee1221106.tar.gz qemu-268846ba93de2529630d623b6ded72cee1221106.tar.bz2 | |
s390/kvm: basic implementation of diagnose 308 subcode 6
Linux uses a check for subcode 6 to decide if other subcodes are
available. Provide a minimal implementation for subcode 6, as well
as for subcode 5.
Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[Move code from kvm.c into misc_helper.c]
Diffstat (limited to 'target-s390x')
| -rw-r--r-- | target-s390x/cpu.h | 3 | ||||
| -rw-r--r-- | target-s390x/kvm.c | 14 | ||||
| -rw-r--r-- | target-s390x/misc_helper.c | 40 |
3 files changed, 57 insertions, 0 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 65bef86..0878ab6 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -1047,6 +1047,9 @@ uint32_t set_cc_nz_f64(float64 v); uint32_t set_cc_nz_f128(float128 v); /* misc_helper.c */ +#ifndef CONFIG_USER_ONLY +void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3); +#endif void program_interrupt(CPUS390XState *env, uint32_t code, int ilen); void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp, uintptr_t retaddr); diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index ed80154e..c7fcdfa 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -72,6 +72,7 @@ #define PRIV_XSCH 0x76 #define PRIV_SQBS 0x8a #define PRIV_EQBS 0x9c +#define DIAG_IPL 0x308 #define DIAG_KVM_HYPERCALL 0x500 #define DIAG_KVM_BREAKPOINT 0x501 @@ -578,11 +579,24 @@ static int handle_hypercall(S390CPU *cpu, struct kvm_run *run) return 0; } +static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run) +{ + uint64_t r1, r3; + + cpu_synchronize_state(CPU(cpu)); + r1 = (run->s390_sieic.ipa & 0x00f0) >> 8; + r3 = run->s390_sieic.ipa & 0x000f; + handle_diag_308(&cpu->env, r1, r3); +} + static int handle_diag(S390CPU *cpu, struct kvm_run *run, int ipb_code) { int r = 0; switch (ipb_code) { + case DIAG_IPL: + kvm_handle_diag_308(cpu, run); + break; case DIAG_KVM_HYPERCALL: r = handle_hypercall(cpu, run); break; diff --git a/target-s390x/misc_helper.c b/target-s390x/misc_helper.c index 454960a..9b4423a 100644 --- a/target-s390x/misc_helper.c +++ b/target-s390x/misc_helper.c @@ -179,6 +179,46 @@ uint32_t HELPER(servc)(CPUS390XState *env, uint64_t r1, uint64_t r2) return r; } +#ifndef CONFIG_USER_ONLY +#define DIAG_308_RC_NO_CONF 0x0102 +#define DIAG_308_RC_INVALID 0x0402 +void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3) +{ + uint64_t addr = env->regs[r1]; + uint64_t subcode = env->regs[r3]; + + if (env->psw.mask & PSW_MASK_PSTATE) { + program_interrupt(env, PGM_PRIVILEGED, ILEN_LATER_INC); + return; + } + + if ((subcode & ~0x0ffffULL) || (subcode > 6)) { + program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + return; + } + + switch (subcode) { + case 5: + if ((r1 & 1) || (addr & 0x0fffULL)) { + program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + return; + } + env->regs[r1+1] = DIAG_308_RC_INVALID; + return; + case 6: + if ((r1 & 1) || (addr & 0x0fffULL)) { + program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + return; + } + env->regs[r1+1] = DIAG_308_RC_NO_CONF; + return; + default: + hw_error("Unhandled diag308 subcode %" PRIx64, subcode); + break; + } +} +#endif + /* DIAG */ uint64_t HELPER(diag)(CPUS390XState *env, uint32_t num, uint64_t mem, uint64_t code) |