diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_64_vio.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_vio.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c index 82970042295e..18cf6d1f8174 100644 --- a/arch/powerpc/kvm/book3s_64_vio.c +++ b/arch/powerpc/kvm/book3s_64_vio.c @@ -209,6 +209,32 @@ fail: return ret; } +long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, + unsigned long ioba, unsigned long tce) +{ + struct kvmppc_spapr_tce_table *stt = kvmppc_find_table(vcpu, liobn); + long ret; + + /* udbg_printf("H_PUT_TCE(): liobn=0x%lx ioba=0x%lx, tce=0x%lx\n", */ + /* liobn, ioba, tce); */ + + if (!stt) + return H_TOO_HARD; + + ret = kvmppc_ioba_validate(stt, ioba, 1); + if (ret != H_SUCCESS) + return ret; + + ret = kvmppc_tce_validate(stt, tce); + if (ret != H_SUCCESS) + return ret; + + kvmppc_tce_put(stt, ioba >> stt->page_shift, tce); + + return H_SUCCESS; +} +EXPORT_SYMBOL_GPL(kvmppc_h_put_tce); + long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, unsigned long liobn, unsigned long ioba, unsigned long tce_list, unsigned long npages) @@ -264,3 +290,29 @@ unlock_exit: return ret; } EXPORT_SYMBOL_GPL(kvmppc_h_put_tce_indirect); + +long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, + unsigned long liobn, unsigned long ioba, + unsigned long tce_value, unsigned long npages) +{ + struct kvmppc_spapr_tce_table *stt; + long i, ret; + + stt = kvmppc_find_table(vcpu, liobn); + if (!stt) + return H_TOO_HARD; + + ret = kvmppc_ioba_validate(stt, ioba, npages); + if (ret != H_SUCCESS) + return ret; + + /* Check permission bits only to allow userspace poison TCE for debug */ + if (tce_value & (TCE_PCI_WRITE | TCE_PCI_READ)) + return H_PARAMETER; + + for (i = 0; i < npages; ++i, ioba += (1ULL << stt->page_shift)) + kvmppc_tce_put(stt, ioba >> stt->page_shift, tce_value); + + return H_SUCCESS; +} +EXPORT_SYMBOL_GPL(kvmppc_h_stuff_tce); |