/*****************************************************************************
* x86/xen/xen-os.h
*
* Random collection of macros and definition
*
* Copyright (c) 2003, 2004 Keir Fraser (on behalf of the Xen team)
* All rights reserved.
*
* 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.
*/
#ifndef _MACHINE_X86_XEN_XEN_OS_H_
#define _MACHINE_X86_XEN_XEN_OS_H_
#ifndef _XEN_XEN_OS_H_
#error "do not #include machine/xen/xen-os.h, #include xen/xen-os.h instead"
#endif
/* Shared memory needs write-back as its cache attribute for coherency. */
#define VM_MEMATTR_XEN VM_MEMATTR_WRITE_BACK
/* Everything below this point is not included by assembler (.S) files. */
#ifndef __ASSEMBLY__
#include <sys/pcpu.h>
/* If non-zero, the hypervisor has been configured to use a direct vector */
extern int xen_vector_callback_enabled;
/* tunable for disabling PV disks */
extern int xen_disable_pv_disks;
/* tunable for disabling PV nics */
extern int xen_disable_pv_nics;
extern uint32_t xen_cpuid_base;
static inline u_int
XEN_CPUID_TO_VCPUID(u_int cpuid)
{
return (pcpu_find(cpuid)->pc_vcpu_id);
}
#define XEN_VCPUID() PCPU_GET(vcpu_id)
static inline bool
xen_has_percpu_evtchn(void)
{
return (!xen_hvm_domain() || xen_vector_callback_enabled);
}
static inline bool
xen_pv_disks_disabled(void)
{
return (xen_hvm_domain() && xen_disable_pv_disks != 0);
}
static inline bool
xen_pv_nics_disabled(void)
{
return (xen_hvm_domain() && xen_disable_pv_nics != 0);
}
bool xen_has_iommu_maps(void);
#endif /* !__ASSEMBLY__ */
#endif /* _MACHINE_X86_XEN_XEN_OS_H_ */
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