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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.
- *
- * $FreeBSD$
- */
- #ifndef _XEN_XEN_OS_H_
- #define _XEN_XEN_OS_H_
- #if !defined(__XEN_INTERFACE_VERSION__)
- #define __XEN_INTERFACE_VERSION__ 0x00030208
- #endif
- #define GRANT_REF_INVALID 0xffffffff
- #ifdef LOCORE
- #define __ASSEMBLY__
- #endif
- #include <xen/interface/xen.h>
- #ifndef __ASSEMBLY__
- #include <xen/interface/event_channel.h>
- struct hypervisor_info {
- vm_paddr_t (*get_xenstore_mfn)(void);
- evtchn_port_t (*get_xenstore_evtchn)(void);
- vm_paddr_t (*get_console_mfn)(void);
- evtchn_port_t (*get_console_evtchn)(void);
- uint32_t (*get_start_flags)(void);
- };
- extern struct hypervisor_info hypervisor_info;
- static inline vm_paddr_t
- xen_get_xenstore_mfn(void)
- {
- return (hypervisor_info.get_xenstore_mfn());
- }
- static inline evtchn_port_t
- xen_get_xenstore_evtchn(void)
- {
- return (hypervisor_info.get_xenstore_evtchn());
- }
- static inline vm_paddr_t
- xen_get_console_mfn(void)
- {
- return (hypervisor_info.get_console_mfn());
- }
- static inline evtchn_port_t
- xen_get_console_evtchn(void)
- {
- return (hypervisor_info.get_console_evtchn());
- }
- static inline uint32_t
- xen_get_start_flags(void)
- {
- return (hypervisor_info.get_start_flags());
- }
- #endif
- #include <machine/xen/xen-os.h>
- /* Everything below this point is not included by assembler (.S) files. */
- #ifndef __ASSEMBLY__
- extern shared_info_t *HYPERVISOR_shared_info;
- extern int xen_disable_pv_disks;
- extern int xen_disable_pv_nics;
- extern bool xen_suspend_cancelled;
- enum xen_domain_type {
- XEN_NATIVE, /* running on bare hardware */
- XEN_PV_DOMAIN, /* running in a PV domain */
- XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
- };
- extern enum xen_domain_type xen_domain_type;
- static inline int
- xen_domain(void)
- {
- return (xen_domain_type != XEN_NATIVE);
- }
- static inline int
- xen_pv_domain(void)
- {
- return (xen_domain_type == XEN_PV_DOMAIN);
- }
- static inline int
- xen_hvm_domain(void)
- {
- return (xen_domain_type == XEN_HVM_DOMAIN);
- }
- static inline bool
- xen_initial_domain(void)
- {
- return (xen_domain() && (xen_get_start_flags() & SIF_INITDOMAIN) != 0);
- }
- /*
- * 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 long *addr)
- {
- unsigned long mask = 1UL << (bit % NBPL);
- return !!(atomic_load_acq_long(&addr[bit / NBPL]) & mask);
- }
- static inline void
- xen_set_bit(int bit, volatile long *addr)
- {
- atomic_set_long(&addr[bit / NBPL], 1UL << (bit % NBPL));
- }
- static inline void
- xen_clear_bit(int bit, volatile long *addr)
- {
- atomic_clear_long(&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);
- #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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