1 /******************************************************************************
4 * Random collection of macros and definition
6 * Copyright (c) 2003, 2004 Keir Fraser (on behalf of the Xen team)
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to
11 * deal in the Software without restriction, including without limitation the
12 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
13 * sell copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
30 #ifndef _XEN_XEN_OS_H_
31 #define _XEN_XEN_OS_H_
33 #if !defined(__XEN_INTERFACE_VERSION__)
34 #define __XEN_INTERFACE_VERSION__ 0x00030208
37 #define GRANT_REF_INVALID 0xffffffff
43 #include <xen/interface/xen.h>
47 #include <xen/interface/event_channel.h>
49 static inline vm_paddr_t
50 xen_get_xenstore_mfn(void)
53 return (hvm_get_parameter(HVM_PARAM_STORE_PFN));
56 static inline evtchn_port_t
57 xen_get_xenstore_evtchn(void)
60 return (hvm_get_parameter(HVM_PARAM_STORE_EVTCHN));
63 static inline vm_paddr_t
64 xen_get_console_mfn(void)
67 return (hvm_get_parameter(HVM_PARAM_CONSOLE_PFN));
70 static inline evtchn_port_t
71 xen_get_console_evtchn(void)
74 return (hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN));
78 #include <machine/xen/xen-os.h>
80 /* Everything below this point is not included by assembler (.S) files. */
83 extern shared_info_t *HYPERVISOR_shared_info;
85 extern int xen_disable_pv_disks;
86 extern int xen_disable_pv_nics;
88 extern bool xen_suspend_cancelled;
90 enum xen_domain_type {
91 XEN_NATIVE, /* running on bare hardware */
92 XEN_PV_DOMAIN, /* running in a PV domain */
93 XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
96 extern enum xen_domain_type xen_domain_type;
101 return (xen_domain_type != XEN_NATIVE);
107 return (xen_domain_type == XEN_PV_DOMAIN);
113 return (xen_domain_type == XEN_HVM_DOMAIN);
117 xen_initial_domain(void)
120 return (xen_domain() && (hvm_start_flags & SIF_INITDOMAIN) != 0);
124 * Based on ofed/include/linux/bitops.h
126 * Those helpers are prefixed by xen_ because xen-os.h is widely included
127 * and we don't want the other drivers using them.
130 #define NBPL (NBBY * sizeof(long))
133 xen_test_bit(int bit, volatile long *addr)
135 unsigned long mask = 1UL << (bit % NBPL);
137 return !!(atomic_load_acq_long(&addr[bit / NBPL]) & mask);
141 xen_set_bit(int bit, volatile long *addr)
143 atomic_set_long(&addr[bit / NBPL], 1UL << (bit % NBPL));
147 xen_clear_bit(int bit, volatile long *addr)
149 atomic_clear_long(&addr[bit / NBPL], 1UL << (bit % NBPL));
155 * Functions to allocate/free unused memory in order
156 * to map memory from other domains.
158 struct resource *xenmem_alloc(device_t dev, int *res_id, size_t size);
159 int xenmem_free(device_t dev, int res_id, struct resource *res);
161 /* Debug/emergency function, prints directly to hypervisor console */
162 void xc_printf(const char *, ...) __printflike(1, 2);
165 #define xen_mb() mb()
168 #define xen_rmb() rmb()
171 #define xen_wmb() wmb()
174 #endif /* !__ASSEMBLY__ */
176 #endif /* _XEN_XEN_OS_H_ */