void kvm__arch_read_term(struct kvm *kvm)
{
if (term_readable(0)) {
serial8250__update_consoles(kvm);
virtio_console__inject_interrupt(kvm);
}
}
static unsigned long h_get_term_char(struct kvm_cpu *vcpu, unsigned long opcode, unsigned long *args)
{
/* To do: Read register from args[0], and check it. */
unsigned long *len = args + 0;
unsigned long *char0_7 = args + 1;
unsigned long *char8_15 = args + 2;
union hv_chario data;
struct iovec iov;
if (vcpu->kvm->cfg.active_console != CONSOLE_HV)
return H_SUCCESS;
if (term_readable(0)) {
iov.iov_base = data.buf;
iov.iov_len = 16;
*len = term_getc_iov(vcpu->kvm, &iov, 1, 0);
*char0_7 = be64_to_cpu(data.a.char0_7);
*char8_15 = be64_to_cpu(data.a.char8_15);
} else {
*len = 0;
}
return H_SUCCESS;
}
void spapr_hvcons_poll(struct kvm *kvm)
{
if (term_readable(0)) {
/*
* We can inject an IRQ to guest here if we want. The guest
* will happily poll, though, so not required.
*/
}
}
static void rtas_get_term_char(struct kvm_cpu *vcpu,
uint32_t token, uint32_t nargs,
target_ulong args,
uint32_t nret, target_ulong rets)
{
int c;
if (term_readable(CONSOLE_HV, 0) &&
(c = term_getc(CONSOLE_HV, 0)) >= 0) {
rtas_st(vcpu->kvm, rets, 0, 0);
rtas_st(vcpu->kvm, rets, 1, c);
} else {
rtas_st(vcpu->kvm, rets, 0, -2);
}
}
