1e8c98e501
Fix two issues with the current event channel code, first ENABLED_SETSIZE is
not correctly defined and then using a BITSET to store the per-cpu masks is
not portable to other arches, since on arm32 the event channel arrays shared
with the hypervisor are of type uint64_t and not long. Partially restore the
previous code but switch the bit operations to use the recently introduced
xen_{set/clear/test}_bit versions.
Reviewed by: Julien Grall <julien.grall@citrix.com>
Sponsored by: Citrix Systems R&D
Differential Revision: https://reviews.freebsd.org/D4080
146 lines
3.8 KiB
C
146 lines
3.8 KiB
C
/******************************************************************************
|
|
* 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 <machine/xen/xen-os.h>
|
|
|
|
#include <xen/interface/xen.h>
|
|
|
|
/* Everything below this point is not included by assembler (.S) files. */
|
|
#ifndef __ASSEMBLY__
|
|
|
|
extern shared_info_t *HYPERVISOR_shared_info;
|
|
extern start_info_t *HYPERVISOR_start_info;
|
|
|
|
/* XXX: we need to get rid of this and use HYPERVISOR_start_info directly */
|
|
extern char *console_page;
|
|
|
|
extern int xen_disable_pv_disks;
|
|
extern int xen_disable_pv_nics;
|
|
|
|
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() && HYPERVISOR_start_info != NULL &&
|
|
(HYPERVISOR_start_info->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 NPBL
|
|
|
|
/*
|
|
* 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_ */
|