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 <machine/xen/xen-os.h>
45 #include <xen/interface/xen.h>
47 /* Everything below this point is not included by assembler (.S) files. */
50 extern shared_info_t *HYPERVISOR_shared_info;
51 extern start_info_t *HYPERVISOR_start_info;
53 /* XXX: we need to get rid of this and use HYPERVISOR_start_info directly */
54 extern char *console_page;
56 extern int xen_disable_pv_disks;
57 extern int xen_disable_pv_nics;
59 extern bool xen_suspend_cancelled;
61 enum xen_domain_type {
62 XEN_NATIVE, /* running on bare hardware */
63 XEN_PV_DOMAIN, /* running in a PV domain */
64 XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
67 extern enum xen_domain_type xen_domain_type;
72 return (xen_domain_type != XEN_NATIVE);
78 return (xen_domain_type == XEN_PV_DOMAIN);
84 return (xen_domain_type == XEN_HVM_DOMAIN);
88 xen_initial_domain(void)
90 return (xen_domain() && HYPERVISOR_start_info != NULL &&
91 (HYPERVISOR_start_info->flags & SIF_INITDOMAIN) != 0);
95 * Based on ofed/include/linux/bitops.h
97 * Those helpers are prefixed by xen_ because xen-os.h is widely included
98 * and we don't want the other drivers using them.
101 #define NBPL (NBBY * sizeof(long))
104 xen_test_bit(int bit, volatile long *addr)
106 unsigned long mask = 1UL << (bit % NBPL);
108 return !!(atomic_load_acq_long(&addr[bit / NBPL]) & mask);
112 xen_set_bit(int bit, volatile long *addr)
114 atomic_set_long(&addr[bit / NBPL], 1UL << (bit % NBPL));
118 xen_clear_bit(int bit, volatile long *addr)
120 atomic_clear_long(&addr[bit / NBPL], 1UL << (bit % NBPL));
126 * Functions to allocate/free unused memory in order
127 * to map memory from other domains.
129 struct resource *xenmem_alloc(device_t dev, int *res_id, size_t size);
130 int xenmem_free(device_t dev, int res_id, struct resource *res);
132 /* Debug/emergency function, prints directly to hypervisor console */
133 void xc_printf(const char *, ...) __printflike(1, 2);
136 #define xen_mb() mb()
139 #define xen_rmb() rmb()
142 #define xen_wmb() wmb()
145 #endif /* !__ASSEMBLY__ */
147 #endif /* _XEN_XEN_OS_H_ */