From 44f1a3d8765b19ee88ca493e8e13cefb6ee50cbe Mon Sep 17 00:00:00 2001 From: Cam Macdonell Date: Mon, 26 Jul 2010 18:10:59 -0600 Subject: [PATCH] Add function to assign ioeventfd to MMIO. Signed-off-by: Cam Macdonell Signed-off-by: Anthony Liguori --- kvm-all.c | 32 ++++++++++++++++++++++++++++++++ kvm.h | 1 + 2 files changed, 33 insertions(+) diff --git a/kvm-all.c b/kvm-all.c index 7635f2f..d9a5dd0 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -1241,6 +1241,38 @@ int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset) return r; } +int kvm_set_ioeventfd_mmio_long(int fd, uint32_t addr, uint32_t val, bool assign) +{ +#ifdef KVM_IOEVENTFD + int ret; + struct kvm_ioeventfd iofd; + + iofd.datamatch = val; + iofd.addr = addr; + iofd.len = 4; + iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH; + iofd.fd = fd; + + if (!kvm_enabled()) { + return -ENOSYS; + } + + if (!assign) { + iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; + } + + ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); + + if (ret < 0) { + return -errno; + } + + return 0; +#else + return -ENOSYS; +#endif +} + int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign) { #ifdef KVM_IOEVENTFD diff --git a/kvm.h b/kvm.h index 93f8187..50b6c01 100644 --- a/kvm.h +++ b/kvm.h @@ -175,6 +175,7 @@ static inline void cpu_synchronize_post_init(CPUState *env) } #endif +int kvm_set_ioeventfd_mmio_long(int fd, uint32_t adr, uint32_t val, bool assign); int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign); #endif -- 2.7.4