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/*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $FreeBSD$
*/
#ifndef __XEN_HVM_H__
#define __XEN_HVM_H__
#include <xen/xen-os.h>
#include <xen/hypervisor.h>
#include <xen/interface/hvm/params.h>
/**
* \brief Wrapper function to obtain a HVM parameter value.
*
* \param index HVM parameter index; see <xen/interface/hvm/params.h>.
*
* \returns 0 on failure; the value of the parameter otherwise.
*/
static inline unsigned long
hvm_get_parameter(int index)
{
struct xen_hvm_param xhv;
int error;
xhv.domid = DOMID_SELF;
xhv.index = index;
error = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
if (error) {
printf("%s: error %d trying to get %d\n", __func__,
error, index);
return (0);
}
return (xhv.value);
}
/** The callback method types for Hypervisor event delivery to our domain. */
enum {
HVM_CB_TYPE_GSI,
HVM_CB_TYPE_PCI_INTX,
HVM_CB_TYPE_VECTOR,
HVM_CB_TYPE_MASK = 0xFF,
HVM_CB_TYPE_SHIFT = 56
};
/** Format for specifying a GSI type callback. */
enum {
HVM_CB_GSI_GSI_MASK = 0xFFFFFFFF,
HVM_CB_GSI_GSI_SHIFT = 0
};
#define HVM_CALLBACK_GSI(gsi) \
(((uint64_t)HVM_CB_TYPE_GSI << HVM_CB_TYPE_SHIFT) \
| ((gsi) & HVM_CB_GSI_GSI_MASK) << HVM_CB_GSI_GSI_SHIFT)
/** Format for specifying a virtual PCI interrupt line GSI style callback. */
enum {
HVM_CB_PCI_INTX_INTPIN_MASK = 0x3,
HVM_CB_PCI_INTX_INTPIN_SHIFT = 0,
HVM_CB_PCI_INTX_SLOT_MASK = 0x1F,
HVM_CB_PCI_INTX_SLOT_SHIFT = 11,
};
#define HVM_CALLBACK_PCI_INTX(slot, pin) \
(((uint64_t)HVM_CB_TYPE_PCI_INTX << HVM_CB_TYPE_SHIFT) \
| (((slot) & HVM_CB_PCI_INTX_SLOT_MASK) << HVM_CB_PCI_INTX_SLOT_SHIFT) \
| (((pin) & HVM_CB_PCI_INTX_INTPIN_MASK) << HVM_CB_PCI_INTX_INTPIN_SHIFT))
/** Format for specifying a direct IDT vector injection style callback. */
enum {
HVM_CB_VECTOR_VECTOR_MASK = 0xFFFFFFFF,
HVM_CB_VECTOR_VECTOR_SHIFT = 0
};
#define HVM_CALLBACK_VECTOR(vector) \
(((uint64_t)HVM_CB_TYPE_VECTOR << HVM_CB_TYPE_SHIFT) \
| (((vector) & HVM_CB_GSI_GSI_MASK) << HVM_CB_GSI_GSI_SHIFT))
enum xen_hvm_init_type {
XEN_HVM_INIT_EARLY,
XEN_HVM_INIT_LATE,
XEN_HVM_INIT_CANCELLED_SUSPEND,
XEN_HVM_INIT_RESUME,
};
int xen_hvm_init_hypercall_stubs(enum xen_hvm_init_type);
void xen_hvm_set_callback(device_t);
void xen_hvm_suspend(void);
void xen_hvm_resume(bool suspend_cancelled);
extern uint32_t hvm_start_flags;
extern bool xen_evtchn_needs_ack;
#endif /* __XEN_HVM_H__ */
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