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