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/******************************************************************************
* 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 _XEN_XEN_OS_H_
#define _XEN_XEN_OS_H_
#define __XEN_INTERFACE_VERSION__ 0x00040d00
#define GRANT_REF_INVALID 0xffffffff
#ifdef LOCORE
#define __ASSEMBLY__
#endif
#include <contrib/xen/xen.h>
#ifndef __ASSEMBLY__
#include <sys/rman.h>
#include <xen/hvm.h>
#include <contrib/xen/event_channel.h>
/*
* Setup function which needs to be called on each processor by architecture
*/
extern void xen_setup_vcpu_info(void);
static inline vm_paddr_t
xen_get_xenstore_mfn(void)
{
return (hvm_get_parameter(HVM_PARAM_STORE_PFN));
}
static inline evtchn_port_t
xen_get_xenstore_evtchn(void)
{
return (hvm_get_parameter(HVM_PARAM_STORE_EVTCHN));
}
static inline vm_paddr_t
xen_get_console_mfn(void)
{
return (hvm_get_parameter(HVM_PARAM_CONSOLE_PFN));
}
static inline evtchn_port_t
xen_get_console_evtchn(void)
{
return (hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN));
}
extern shared_info_t *HYPERVISOR_shared_info;
extern bool xen_suspend_cancelled;
static inline bool
xen_domain(void)
{
return (vm_guest == VM_GUEST_XEN);
}
static inline bool
xen_pv_domain(void)
{
return (false);
}
static inline bool
xen_hvm_domain(void)
{
return (vm_guest == VM_GUEST_XEN);
}
static inline bool
xen_initial_domain(void)
{
return (xen_domain() && (hvm_start_flags & SIF_INITDOMAIN) != 0);
}
#endif
#include <machine/xen/xen-os.h>
/* Everything below this point is not included by assembler (.S) files. */
#ifndef __ASSEMBLY__
/*
* Based on ofed/include/linux/bitops.h
*
* Those helpers are prefixed by xen_ because xen-os.h is widely included
* and we don't want the other drivers using them.
*
*/
#define NBPL (NBBY * sizeof(long))
static inline bool
xen_test_bit(int bit, volatile xen_ulong_t *addr)
{
unsigned long mask = 1UL << (bit % NBPL);
return !!(atomic_load_acq_xen_ulong(&addr[bit / NBPL]) & mask);
}
static inline void
xen_set_bit(int bit, volatile xen_ulong_t *addr)
{
atomic_set_xen_ulong(&addr[bit / NBPL], 1UL << (bit % NBPL));
}
static inline void
xen_clear_bit(int bit, volatile xen_ulong_t *addr)
{
atomic_clear_xen_ulong(&addr[bit / NBPL], 1UL << (bit % NBPL));
}
#undef NBPL
/*
* Functions to allocate/free unused memory in order
* to map memory from other domains.
*/
struct resource *xenmem_alloc(device_t dev, int *res_id, size_t size);
int xenmem_free(device_t dev, int res_id, struct resource *res);
/* Debug/emergency function, prints directly to hypervisor console */
void xc_printf(const char *, ...) __printflike(1, 2);
/*
* Emergency print function, can be defined per-arch, otherwise defaults to
* HYPERVISOR_console_write. Should not be called directly, use xc_printf
* instead.
*/
void xen_emergency_print(const char *str, size_t size);
/* Arch-specific helper to init scratch mapping space. */
int xen_arch_init_physmem(device_t dev, struct rman *mem);
#ifndef xen_mb
#define xen_mb() mb()
#endif
#ifndef xen_rmb
#define xen_rmb() rmb()
#endif
#ifndef xen_wmb
#define xen_wmb() wmb()
#endif
#endif /* !__ASSEMBLY__ */
#endif /* _XEN_XEN_OS_H_ */
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