81 lines
1.5 KiB
C
81 lines
1.5 KiB
C
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/export.h>
|
|
#include <asm/hypervisor.h>
|
|
#include <asm/xen/hypercall.h>
|
|
|
|
int xen_event_channel_op_compat(int cmd, void *arg)
|
|
{
|
|
struct evtchn_op op;
|
|
int rc;
|
|
|
|
op.cmd = cmd;
|
|
memcpy(&op.u, arg, sizeof(op.u));
|
|
rc = _hypercall1(int, event_channel_op_compat, &op);
|
|
|
|
switch (cmd) {
|
|
case EVTCHNOP_close:
|
|
case EVTCHNOP_send:
|
|
case EVTCHNOP_bind_vcpu:
|
|
case EVTCHNOP_unmask:
|
|
/* no output */
|
|
break;
|
|
|
|
#define COPY_BACK(eop) \
|
|
case EVTCHNOP_##eop: \
|
|
memcpy(arg, &op.u.eop, sizeof(op.u.eop)); \
|
|
break
|
|
|
|
COPY_BACK(bind_interdomain);
|
|
COPY_BACK(bind_virq);
|
|
COPY_BACK(bind_pirq);
|
|
COPY_BACK(status);
|
|
COPY_BACK(alloc_unbound);
|
|
COPY_BACK(bind_ipi);
|
|
#undef COPY_BACK
|
|
|
|
default:
|
|
WARN_ON(rc != -ENOSYS);
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(xen_event_channel_op_compat);
|
|
|
|
int xen_physdev_op_compat(int cmd, void *arg)
|
|
{
|
|
struct physdev_op op;
|
|
int rc;
|
|
|
|
op.cmd = cmd;
|
|
memcpy(&op.u, arg, sizeof(op.u));
|
|
rc = _hypercall1(int, physdev_op_compat, &op);
|
|
|
|
switch (cmd) {
|
|
case PHYSDEVOP_IRQ_UNMASK_NOTIFY:
|
|
case PHYSDEVOP_set_iopl:
|
|
case PHYSDEVOP_set_iobitmap:
|
|
case PHYSDEVOP_apic_write:
|
|
/* no output */
|
|
break;
|
|
|
|
#define COPY_BACK(pop, fld) \
|
|
case PHYSDEVOP_##pop: \
|
|
memcpy(arg, &op.u.fld, sizeof(op.u.fld)); \
|
|
break
|
|
|
|
COPY_BACK(irq_status_query, irq_status_query);
|
|
COPY_BACK(apic_read, apic_op);
|
|
COPY_BACK(ASSIGN_VECTOR, irq_op);
|
|
#undef COPY_BACK
|
|
|
|
default:
|
|
WARN_ON(rc != -ENOSYS);
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(xen_physdev_op_compat);
|